WO2013137155A1 - Work tool - Google Patents

Work tool Download PDF

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Publication number
WO2013137155A1
WO2013137155A1 PCT/JP2013/056533 JP2013056533W WO2013137155A1 WO 2013137155 A1 WO2013137155 A1 WO 2013137155A1 JP 2013056533 W JP2013056533 W JP 2013056533W WO 2013137155 A1 WO2013137155 A1 WO 2013137155A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
clamp
work tool
spindle
holding
Prior art date
Application number
PCT/JP2013/056533
Other languages
French (fr)
Japanese (ja)
Inventor
洋規 生田
雅俊 中浜
Original Assignee
株式会社マキタ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2012054248A external-priority patent/JP5750073B2/en
Priority claimed from JP2012095072A external-priority patent/JP2013220515A/en
Application filed by 株式会社マキタ filed Critical 株式会社マキタ
Publication of WO2013137155A1 publication Critical patent/WO2013137155A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/06—Grinders for cutting-off
    • B24B27/08—Grinders for cutting-off being portable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/29—Details; Component parts; Accessories
    • B27B5/30—Details; Component parts; Accessories for mounting or securing saw blades or saw spindles
    • B27B5/32—Devices for securing circular saw blades to the saw spindle

Definitions

  • the present invention relates to a work tool for driving a tip tool.
  • WO 2005/102605 describes a work tool for driving a tool sandwiched between a work spindle and a fastening element.
  • the work tool is configured such that the fastening element is slidable with respect to the work spindle between a clamp position for holding the tool and an open position where it is removed from the work spindle.
  • a stop assembly provided inside the working spindle clamps the clamping shaft of the fastening element. That is, the clamp shaft is clamped by the clamp member of the stop assembly moving in the radial direction of the clamp shaft by the biasing force provided by the spring element provided inside the work spindle. This clamps the tool between the working spindle and the fastening element.
  • This stop assembly releases the clamping element clamping via axial displacement of the thrust member by manipulating the cock lever.
  • the work tool described in WO2005 / 102605 clamps a tool as a tip tool by holding a clamp shaft by operating a cock lever.
  • WO2005 / 102605 clamps a tool as a tip tool by holding a clamp shaft by operating a cock lever.
  • the present invention has an object to provide a further improvement technique in a technique related to a work tool in which a clamped tip tool is driven.
  • the work tool which drives the tip tool with which the attachment or detachment is mounted is comprised.
  • the work tool has a first shaft having a first clamp part and a second shaft having a second clamp part, and is configured to sandwich the tip tool between the first clamp part and the second clamp part.
  • the work tool includes a collar that can be screwed to the first shaft, and a holding member that can be engaged with the collar. The holding member moves in the radial direction of the second shaft and holds the second shaft by the movement of the collar in the long axis direction of the first shaft when the collar rotates with respect to the first shaft. Has been.
  • the clamping of the tip tool by the first clamp portion and the second clamp portion is performed by the holding member holding the second shaft in a state where the tip tool is disposed between the first clamp portion and the second clamp portion. Achieved.
  • the second shaft is preferably held by the movement of the holding member, and may be held by the cooperation of the holding member and another member.
  • the second shaft is preferably held by a holding member, a collar, the first shaft, and the like.
  • the holding member is moved in the radial direction of the second shaft by screwing the collar and the first shaft. That is, the movement of the collar in the major axis direction of the first shaft is converted into the movement of the holding member in the radial direction of the second shaft by screwing the collar and the first shaft. Therefore, a large holding force is generated with respect to the holding force for the holding member to hold the second shaft.
  • the collar has a recess and the holding member is disposed in the recess of the collar.
  • the holding member is held by the recess, so that the holding member is held by the collar without providing a special member for holding the holding member.
  • the collar is arranged inside the first shaft.
  • the collar is disposed inside the first shaft, it is possible to prevent the work tool from becoming large in the direction toward the outside of the first shaft.
  • the work tool has a rotating member that rotates the collar relative to the first shaft. Further, the holding member is held between the collar and the rotating member in the major axis direction of the first shaft in a state where the second shaft is held.
  • the collar can be rotated by the operation of the rotating member.
  • the holding member can be moved by a simple operation.
  • the holding member since the holding member is sandwiched between the collar and the rotating member, it is possible to prevent the holding member from being unexpectedly released while the holding member holds the second shaft.
  • the rotation member has a rotation transmission member that can be engaged with the collar and an operation member that is detachably engaged with the rotation transmission member.
  • the collar and the rotation transmission member are rotated by the operation of the operation member.
  • the holding member can be moved by a simple operation.
  • the operation member since the operation member can be attached to and detached from the rotation transmission member, the operation member is engaged with the rotation transmission member only when the rotation transmission member is rotated. Therefore, the movement of the operation member is suppressed during the operation of the work tool.
  • a working tool when the collar rotates with respect to the first shaft and moves in the major axis direction of the first shaft, the working tool moves in the major axis direction of the first shaft of the holding member.
  • a movement restricting member for restricting the movement of.
  • the holding member is restricted from moving in the major axis direction of the first shaft by the movement restricting member. That is, the engagement between the collar and the holding member can be released simply by rotating the collar.
  • the collar has a hole into which the second shaft is inserted.
  • the 2nd shaft is comprised so that it may be hold
  • the collar has a restricting portion that restricts the holding member from moving to the hole when the second shaft is not inserted into the hole.
  • the second shaft is inserted and held in the hole, the second shaft is firmly held by surrounding the second shaft with the collar. Moreover, since the control part which controls that a holding member moves to a hole part is formed, when inserting a 2nd shaft into a hole part, it can suppress that a holding member prevents insertion of a 2nd shaft. As a result, the second shaft is reliably inserted into the hole.
  • the holding member is a single member.
  • the work tool for driving the tip tool that is detachably mounted is configured.
  • the work tool includes a first shaft having a first clamp portion, a second clamp portion, and a second shaft that is movable relative to the first shaft.
  • the first clamp portion and the second clamp portion It is comprised so that a tip tool may be clamped by.
  • the work tool includes a holding member that engages with the second shaft and holds the second shaft, and an operation member that moves the holding member relative to the second shaft.
  • the operation member is configured to engage with the work tool main body at the operation member storage position.
  • the operating member since the operating member is engaged with the work tool main body, the operating member is securely held at the storage position when the workpiece is processed.
  • the operation member has an elastic member and an engagement member biased by the elastic member.
  • the engaging member is configured to engage with the work tool main body at the operation member storage position.
  • the operation member is reliably held at the storage position when the workpiece is processed.
  • the operating member is held at the storage position by pressing the engaging member against the work tool main body by the biasing force of the biasing member.
  • the work tool main body may be provided with a recess, a projection, or the like that engages with the engagement member, and the operation member may be held in the storage position by the engagement of the engagement member with the recess or the projection. .
  • the operation member is formed with a housing portion capable of housing the elastic member.
  • the elastic member is accommodated in the accommodating portion of the operation member, it is possible to suppress the elastic member from obstructing the operation of the operation member when the operation member is operated.
  • the operation member is configured to extend in a predetermined direction from a fulcrum on which the operation member is supported.
  • the elastic member is configured to urge the engaging member along the predetermined direction.
  • the engaging member is urged by the elastic member in the direction extending from the fulcrum of the operating member, the engaging member is reliably engaged with the work tool main body.
  • the operation member is configured to be movable in a plurality of directions, and is disposed at a storage position where the operation member is stored by movement in at least one of the plurality of directions. It is configured to be possible.
  • the operation member is configured to engage with the work tool main body at the operation member storage position.
  • the operation member in the work tool in which the operation member can move in a plurality of directions, the operation member is engaged with the work tool main body at the storage position.
  • the operation member may be configured to be engageable with the work tool main body corresponding to each movement in a plurality of directions.
  • the holding member has a screwing member that can be screwed with at least one of the first shaft and the second shaft.
  • the operation member is configured to rotate the screwing member.
  • the operation member is configured to rotate the screwing member, movement for the operation member to engage with the screwing member and movement for the operation member to rotate the screwing member are performed. Necessary. That is, in the configuration in which the operation member moves in a plurality of directions, the operation member is held by the work direction main body at the storage position.
  • the screwing member is configured to be screwed with the second shaft to hold the second shaft.
  • the screwing member and the second shaft are directly screwed together, the second shaft is securely held by the screwing member.
  • the screwing member is configured as a collar screwed with the first shaft.
  • the work tool includes a movable member that is engaged with the collar and can hold the second shaft.
  • the movable member moves in the radial direction of the second shaft by the movement of the collar in the long axis direction of the first shaft when the collar rotates with respect to the first shaft, and holds the second shaft. Has been.
  • the movable member is moved in the radial direction of the second shaft by screwing the collar and the first shaft. That is, the movement of the collar in the major axis direction of the first shaft is converted into the movement of the movable member in the radial direction of the second shaft by screwing the collar and the first shaft. As a result, a large holding force is generated with respect to the holding force for holding the second shaft by the movable member.
  • FIG. 3 is a partially enlarged view of FIG. 2.
  • FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3.
  • FIG. 4 is a partially enlarged view of FIG. 3.
  • FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5.
  • FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 5. It is sectional drawing which shows the state which turned the cam lever of FIG. It is a figure which shows the state which cancelled
  • FIG. 10 is a cross-sectional view taken along line XX in FIG. 9.
  • FIG. 10 it is a figure which shows the state by which the movement of the clamp member was controlled.
  • It is a perspective view which shows the whole structure of the electrically driven vibration tool which concerns on 2nd Embodiment.
  • It is sectional drawing which shows the whole structure of the electrically driven vibration tool which concerns on 2nd Embodiment. It is the elements on larger scale of FIG.
  • FIG. is sectional drawing of the clamp shaft holding member in the VI-VI line of FIG.
  • FIG. 14 is a cross-sectional view showing a state where the lever portion of FIG. 13 is turned around a turning axis.
  • FIG. 21 is a top view showing a state where the lever portion of FIG. 20 is turned around the spindle.
  • FIG. 21 is a top view showing a state where the lever portion of FIG. 20 is turned around the spindle.
  • FIG. 21 is a top view showing a state where the lever portion of FIG. 20 is turned around the spindle.
  • FIG. 21 is a top view showing a state where the lever portion of FIG. 20 is turned around the spindle.
  • FIG. 21 is a top view showing a state where the lever portion of FIG. 20 is turned around the spindle.
  • FIG. 21 is a top view showing a state where the lever portion of FIG. 20 is turned around the spindle.
  • FIG. 24 is a perspective view which shows a clamp member.
  • FIG. 24 is a fragmentary sectional view in the XVI-XVI line of FIG.
  • FIG. 24 is a cross-
  • the present embodiment is an example in which the present invention is applied to an electric vibration tool as a work tool.
  • the electric vibration tool 100 selectively attaches a plurality of types of tools such as a blade and a polishing pad, and vibrates the attached tool so that the tool is applied to a workpiece. It is a work tool that performs processing such as cutting and polishing according to the type.
  • a blade 200 as an example of a tool.
  • the tool such as the blade 200 is an implementation configuration example corresponding to the “tip tool” in the present invention.
  • the electric vibration tool 100 is mainly configured by a main body housing 101 in which a drive mechanism 102 and a rotation control mechanism 104 are housed, and a tool holding mechanism 103 for holding a blade 200. Yes.
  • the driving mechanism 102 is mainly composed of a motor 110, an eccentric shaft 112, a bearing 113, a driven arm 114, a spindle connecting portion 115, and the like.
  • the eccentric shaft 112 is disposed at the tip of the output shaft 111 of the motor 110 and at a position eccentric to the rotation shaft of the output shaft 111 so as to extend in a direction parallel to the rotation shaft.
  • the bearing 113 is attached to the outside of the eccentric shaft 112.
  • the driven arm 114 is composed of two arm portions 114 a extending from the spindle connection portion 115 toward the motor 110.
  • the driven arm 114 is disposed so that the two arm portions 114 a come into contact with the bearing 113 at two opposite positions outside the bearing 113.
  • the tool holding mechanism 103 is a mechanism that holds the blade 200 and transmits the output of the motor 110 to the blade 200 to vibrate the blade 200.
  • the tool holding mechanism 103 is mainly composed of a spindle 120, a clamp shaft 123, and a clamp shaft holding mechanism 130.
  • the spindle 120 is a hollow cylindrical member and is arranged so that the major axis direction extends in a direction intersecting the output shaft 111 of the motor 110.
  • the hollow portion is formed in a stepped shape, and a first stepped surface 120 a and a second stepped surface 120 b are formed inside the spindle 120.
  • the spindle 120 is supported by the main body housing 101 via bearings 125 and 126 so as to be rotatable around the long axis direction at two locations in the long axis direction.
  • a guide member 121 is attached to the tip of the spindle 120 outside the main body housing 101. Further, a screw thread 120 c that is screwed with the screwing member 131 is formed inside the spindle 120.
  • the guide member 121 is a substantially cylindrical member that is engaged and fixed to the outside of the spindle 120.
  • the guide member 121 has a guide hole 121a, an inner protrusion 121b and an outer protrusion 121c formed along the guide hole 121a.
  • the inner protrusion 121 b is disposed inside the spindle 120
  • the outer protrusion 121 c is disposed outside the spindle 120.
  • a disc-shaped flange 122 is attached to the outer protruding portion 121c.
  • the clamp shaft 123 has a clamp head 124 integrally formed at one end of a substantially cylindrical shaft.
  • the clamp shaft 123 can be inserted into the spindle 120 through the guide hole 121a of the guide member 121 and is detachable from the spindle 120.
  • the other end of the clamp shaft 123 is formed in a spherical shape.
  • the tool holding mechanism 103 is configured to be able to hold the blade 200 between the flange 122 and the clamp head 124.
  • the spindle 120 and the clamp shaft 123 are implementation configuration examples corresponding to the “first shaft” and the “second shaft” in the present invention, respectively.
  • the flange 122 and the clamp head 124 are implementation configuration examples corresponding to the “first clamp portion” and the “second clamp portion” in the present invention, respectively.
  • the clamp shaft holding mechanism 130 is a mechanism that holds the clamp shaft 123.
  • the clamp shaft holding mechanism 130 is mainly composed of a screw member 131, a clamp member 132, and a rotational force transmission member 133.
  • the screwing member 131 is a substantially cylindrical member, and is disposed inside the spindle 120. On the outer peripheral surface of the screw member 131, a screw thread 131a that is screwed with the screw thread 120c of the spindle 120 is formed. Accordingly, the screwing member 131 is configured to be movable in the long axis direction of the spindle 120 by being screwed with the spindle 120 and rotating.
  • This screwing member 131 is an implementation configuration example corresponding to the “color” in the present invention.
  • a clamp shaft insertion hole 134 into which the clamp shaft 123 is inserted is formed in the central region of the screwing member 131. Furthermore, the screwing member 131 has a clamp member holding portion 135 connected to the clamp shaft insertion hole 134.
  • the clamp member holding portion 135 is formed in a concave shape with respect to the clamp shaft insertion hole 134.
  • the clamp member holding portion 135 is provided with two engagement concave portions 135a that can be engaged with the convex portions 132b of the clamp member 132. Further, as shown in FIG. 5, the clamp member holding portion 135 is formed with an inclined surface 135 b inclined with respect to the major axis direction of the spindle 120. As shown in FIG.
  • an engagement recess 136 that can engage with the engagement protrusion 133 c of the rotational force transmission member 133 is formed on the outer peripheral surface of the screwing member 131.
  • This clamp shaft insertion hole 134 is an implementation configuration example corresponding to the “hole” in the present invention.
  • the clamp member 132 is a substantially wedge-shaped member.
  • the clamp member 132 is disposed in the clamp member holding portion 135 and configured to hold the clamp shaft 123 in cooperation with the screwing member 131.
  • the clamp member 132 is formed with an inclined surface 132 a that can be engaged with the inclined surface 135 b of the screwing member 131.
  • two convex portions 132 b that can be engaged with the engaging concave portions 135 a of the screwing member 131 are provided.
  • the rotational force transmission member 133 is a member that rotates the screwing member 131 relative to the spindle 120 by transmitting the rotation of the thrust pin 140 to the screwing member 131.
  • the rotational force transmission member 133 has a main body portion 133a formed in a substantially disc shape. As shown in FIG. 7, the main body 133a is formed with a substantially rectangular engagement hole 133b with which the engagement portion 141 of the thrust pin 140 is engaged. As shown in FIG. 6, the rotational force transmitting member 133 is formed with two convex portions 133c that can be engaged with the engaging concave portion 136 of the screwing member 131 protruding from the main body portion 133a.
  • the screw member 131 is rotated when the rotational force transmission member 133 is rotated by the thrust pin 140. Thereby, the screwing member 131 is relatively moved in the long axis direction of the spindle 120. With the movement of the screwing member 131, the inclined surface 135a of the clamp member holding portion 135 and the inclined surface 132a of the clamp member 132 are engaged, whereby the screwing member 131 moves in the major axis direction of the spindle 120. The clamp member 132 is converted into the movement of the spindle 120 in the radial direction. That is, the clamp member 132 moves in the radial direction of the spindle 120 and the clamp shaft 123 inserted into the spindle 120 is held.
  • This clamp member 132 is an implementation structural example corresponding to the "holding member” in this invention.
  • the rotational force transmission member 133 is an implementation structural example corresponding to the "rotation transmission member” in this invention.
  • maintenance part 135 is the implementation structural example corresponding to the "recessed part” in this invention.
  • the rotation control mechanism 104 that operates the clamp shaft holding mechanism 130 will be described.
  • the rotation control mechanism 104 is mainly composed of a thrust pin 140, a coil spring 143, and a cam lever mechanism 150.
  • the members constituting the rotation control mechanism 104 are an implementation configuration example corresponding to the “operation member” in the present invention.
  • the thrust pin 140 is a substantially cylindrical member, and is disposed inside the spindle 120 so as to be slidable in the long axis direction of the spindle 120.
  • An engagement portion 141 that engages with the engagement hole 133 b of the rotational force transmission member 133 is formed at the tip of the thrust pin 140.
  • the engaging portion 141 is formed with a spring receiving portion 142 protruding in the radial direction of the thrust pin 140. That is, the outer diameter of the spring receiving portion 142 is formed to be approximately the same as the inner diameter of the spindle 120. Thereby, the thrust pin 140 slides in the spindle 120 smoothly.
  • the coil spring 143 is disposed in contact with the spring receiving portion 142 and the first stepped surface 120a of the spindle 120.
  • the coil spring 143 can extend and contract in the major axis direction of the spindle 120 and is held in a contracted state so as to urge the thrust pin 140 toward the rotational force transmitting member 133.
  • the cam lever mechanism 150 is connected to the thrust pin 140 at the end opposite to the end where the engagement portion 141 is formed.
  • the cam lever mechanism 150 is a member that slides the thrust pin 140 in the major axis direction and rotates the thrust pin 140 with respect to the spindle 120.
  • the cam lever mechanism 150 is mainly composed of a lever portion 151, an eccentric portion 152, a turning shaft 153, and a turning member 154.
  • a lever portion 151 is provided so as to be capable of turning around a turning shaft 153. Further, the cam lever mechanism 150 is configured to be rotatable around the long axis of the spindle 120.
  • the lever portion 151 is connected to the eccentric portion 152.
  • a hole through which the turning shaft 153 passes is formed in the eccentric portion 152.
  • the pivot shaft 153 is inserted through the eccentric portion 152 and is held so as to be relatively movable in the major axis direction of the spindle 120 with respect to the pivot member 154.
  • the eccentric part 152 and the lever part 151 are hold
  • the lever part 151 has the flat holding
  • the center position of the eccentric part 152 is arranged eccentrically with respect to the axis center of the turning shaft 153. Accordingly, the distance from the center of the turning shaft 153 is different at each position on the outer periphery of the eccentric portion 152.
  • the turning member 154 is attached to the main body housing 101 through the O-ring 155 so as to be turnable around the long axis of the spindle 120.
  • the pivot member 154 pivots around the major axis of the spindle 120, so that the lever portion 151 pivots around the major axis of the spindle 120.
  • the eccentric portion 152 is formed eccentrically with respect to the turning shaft 153
  • the turning shaft 153 is turned into the spindle 120.
  • the thrust pin 140 is moved in the major axis direction.
  • the thrust pin 140 can be rotated around the major axis by pivoting the lever portion 151 around the major axis of the spindle 120 together with the pivoting member 154.
  • the direction of the engagement part 141 of the thrust pin 140 and the engagement hole 133b of the rotational force transmission member 133 can be made to correspond.
  • the urging force of the coil spring 143 causes the engaging portion 141 to engage with the engaging hole 133b as shown in FIG.
  • the lever 151 is rotated around the long axis of the spindle 120 in a state where the engaging portion 141 and the engaging hole 133b are engaged, whereby the rotational force transmitting member 133 is moved to the long axis of the spindle 120. Can be rotated around. Due to the rotation of the rotational force transmitting member 133, the convex portion 133 c of the rotational force transmitting member 133 rotates the screwing member 131 around the long axis of the spindle 120. As a result, the screwing member 131 rotates relative to the spindle 120 and moves in the long axis direction of the spindle 120.
  • the clamp shaft 123 inserted into the clamp shaft insertion hole 134 is held by the clamp member 132 by the screw member 131 moving in the longitudinal direction of the spindle 120 toward the side where the cam lever mechanism 150 is disposed (upward). To do. That is, when the screwing member 131 moves upward, the clamp member 132 held by the clamp member holding portion 135 also moves upward. When the rotational force transmission member 133 comes into contact with the second stepped surface 120 b and the clamp member 132 comes into contact with the rotational force transmission member 133, the clamp member 132 is sandwiched between the rotational force transmission member 133 and the screwing member 131. The upward movement of the clamp member 132 is restricted.
  • the clamp member 132 is allowed to move in the radial direction toward the outside of the spindle 120. Thereby, holding
  • This inner protrusion 121b is an implementation configuration example corresponding to the “movement restricting member” in the present invention.
  • the engaging recess 135a is an implementation configuration example corresponding to the “regulating portion” in the present invention.
  • the rotational movement of the output shaft 111 is indicated by the arrow A by the eccentric shaft 112 and the bearing 113 as shown in FIG. It is converted into a reciprocating motion in a direction (hereinafter referred to as A direction).
  • the reciprocating motion in the A direction is transmitted to the driven arm 114 and forms a predetermined angle in the circumferential direction around the spindle 120 (hereinafter referred to as the B direction) indicated by the arrow B around the spindle connecting portion 115. Converted to rotational motion.
  • the spindle 120 connected to the spindle connecting portion 115 is driven to reciprocate in the B direction.
  • the blade 200 sandwiched between the flange 122 and the clamp head 124 is vibrated to perform processing such as cutting on the workpiece.
  • the screw member 131 and the spindle 120 are screwed together, and the screw member 131 moves in the longitudinal direction of the spindle 120, so that the clamp member 132 moves in the radial direction of the spindle 120. Moved.
  • the clamp shaft 123 arranged in the spindle 120 is held by the clamp member 132 and the screwing member 131. Therefore, the movement of the screw member 131 in the major axis direction of the spindle 120 can be converted into the movement of the clamp member 132 in the radial direction of the clamp shaft 123.
  • the clamp shaft 123 can be held with a large holding force as compared with a configuration in which a clamping force is directly applied to the clamping member 132 by a spring or the like.
  • the clamp shaft 123 into which the guide hole 121a of the guide member 121 is inserted is guided. Furthermore, the inner protrusion 121b regulates the movement of the clamp member 132 when releasing the holding of the clamp member 132. Further, the outer protrusion 121 c holds the flange 122. Accordingly, since the guide member 121 has a plurality of functions, the number of parts of the electric vibration tool 100 can be reduced.
  • the rotational force transmission member 133 transmits the rotation of the thrust pin 140 to the screwing member 131. Furthermore, when the clamp shaft 123 is held, the rotational force transmission member 133 restricts the movement of the clamp member 132 in the major axis direction of the spindle 120. Thereby, the clamp member 132 is moved in the direction toward the clamp shaft 123. That is, since the rotational force transmission member 133 has a plurality of functions, the number of parts of the electric vibration tool 100 can be reduced.
  • the cam lever mechanism 150 can move the thrust pin 140 in the long axis direction by turning the lever portion 151 with respect to the turning shaft 153. Further, the cam lever mechanism 150 can be turned around the long axis of the spindle 120. Thereby, the thrust pin 140 can be easily engaged with the rotational force transmission member 132.
  • the convex portion 132b of the clamp member 132 engages with the engagement concave portion 135a of the clamp member holding portion 135, dropping of the clamp member 132 into the clamp shaft insertion hole 134 is restricted.
  • the tip end portion of the clamp shaft 123 is formed in a spherical shape, the clamp shaft 123 is inserted into the clamp shaft insertion hole 134 even when the clamp member 132 protrudes into the clamp shaft insertion hole 134. be able to.
  • the screw shaft 131 is formed with the clamp shaft insertion hole 134 in the screwing member 131, but is not limited thereto. If the screw member 131 is configured to move the clamp member 132 in the radial direction of the spindle 120 by moving in the long axis direction of the spindle 120, the clamp shaft 123 is connected to the clamp member 132 and the screw member. Even if the clamp shaft 123 is not held between the clamp member 132 and the spindle 120, the clamp shaft 123 can be held.
  • the screwing member 131 is configured such that the screwing member 131 is screwed to the outside of the spindle 120 if the engaging recess 135a and the inclined surface 135b that engage with the clamp member 132 are disposed inside the spindle 120. It may be.
  • the electric vibration tool 100 is mainly configured by a main body housing 101 in which a drive mechanism 102 and a rotation control mechanism 104 are housed, and a tool holding mechanism 103 for holding the blade 200. Yes.
  • the tool holding mechanism 103 in the second embodiment is mainly configured by a spindle 120, a clamp shaft 1123, and a clamp shaft holding mechanism 1130.
  • the spindle 120 and the guide member 121 in the second embodiment are substantially the same as those in the first embodiment, but unlike the first embodiment, a screw thread 120 c is formed inside the spindle 120. Further, the inner protrusion 121b of the guide member 121 is not formed.
  • the spindle 120 is an implementation configuration example corresponding to the “first shaft” in the present invention.
  • the clamp shaft 1123 is a substantially columnar member, has a clamp head 1124 formed integrally at one end, and has a threaded portion 1125 at the other end.
  • the screw portion 1125 is formed with a male screw.
  • This clamp shaft 1123 is an implementation structural example corresponding to the "second shaft" in the present invention.
  • the spindle 120, the guide member 121, the flange 122, and the clamp shaft 1123 configured as described above are configured such that the blade 200 can be sandwiched between the clamp head 1124 and the flange 122 facing the clamp head 1124.
  • the clamp shaft holding mechanism 1130 is a mechanism that holds the clamp shaft 1123 by screwing with the clamp shaft 1123.
  • the clamp shaft holding mechanism 1130 is mainly composed of a clamp shaft holding member 1131 and an O-ring 1132.
  • the clamp shaft holding member 1131 is a hollow substantially cylindrical member.
  • the hollow portion of the clamp shaft holding member 1131 is provided with a screw portion 1133 that is screwed with the screw portion 1125 of the clamp shaft 1123.
  • the threaded portion 1133 is formed with a female thread.
  • the clamp shaft holding member 1131 is formed with a groove portion 1134 that can engage with the engaging member 141.
  • the clamp shaft holding member 1131 is formed with a protruding portion 1135 protruding in the radial direction.
  • the clamp shaft holding member 1131 is disposed inside the spindle 120, and the protruding portion 1135 is disposed between the spindle 120 and the guide member 121.
  • the clamp shaft holding member 1131 can rotate relative to the spindle 120 and the guide member 121 in the circumferential direction.
  • An O-ring 1132 is disposed on the outer periphery of the clamp shaft holding member 1131, and when the clamp shaft holding member 1131 rotates in the circumferential direction, a frictional resistance is generated between the inner wall of the spindle 120. Yes.
  • This clamp shaft holding member 1131 is an implementation structural example corresponding to the “screwing member” in the present invention.
  • the rotation control mechanism 104 is a mechanism that controls the relative rotation of the clamp shaft holding member 1131 with respect to the spindle 120.
  • the rotation control mechanism 104 is mainly composed of a thrust pin 140, an engaging portion 141, a spring receiving portion 142, a coil spring 143, a cam lever mechanism 150, and the like.
  • the thrust pin 140 is disposed inside the spindle 120, is slidable in the long axis direction, and is rotatable in the circumferential direction of the spindle 120.
  • the engaging portion 141 can be engaged with the groove portion 134 of the clamp shaft holding member 131 and is disposed at the distal end portion of the thrust pin 140.
  • the spring receiving portion 142 is a disk-like member that protrudes from the thrust pin 140 in the intersecting direction, and is disposed between the thrust pin 140 and the engaging portion 141.
  • the thrust pin 140 and the engaging portion 141 are coupled via a spring receiving portion 142, and can integrally slide inside the spindle 120 in the major axis direction and can rotate in the circumferential direction of the spindle 120. It is configured.
  • the end of the thrust pin 140 opposite to the engaging portion 141 is formed in a curved surface shape. Further, an O-ring 144 is disposed on the thrust pin 140. The O-ring 144 is disposed so as to contact the inner wall of the spindle 120, and blocks dust that passes between the thrust pin 140 and the spindle 120 from the outside and enters the inside of the spindle 120.
  • the coil spring 143 is disposed inside the spindle 120, and one end is in contact with the spring receiving portion 142 and the other end is in contact with the spindle 120. Accordingly, the coil spring 143 biases the thrust pin 140, the engaging portion 141, and the spring receiving portion 142 in the spindle 120 in the direction in which the clamp shaft holding member 1131 is disposed.
  • the cam lever mechanism 150 is a member that slides the thrust pin 140 in the long axis direction.
  • the cam lever mechanism 150 is mainly composed of a lever portion 151, a turning shaft 153, and a turning member 154.
  • This lever part 151 is the implementation structural example corresponding to the "operation member" in this invention.
  • the lever portion 151 is formed with a through hole 151 a along the long axis direction of the lever portion 151.
  • a stepped portion 151b is formed in the through hole 151a.
  • the coil spring 156 and the movable pin 157 are accommodated in the through hole 151 a, whereby the coil spring 156 and the movable pin 157 are arranged along the long axis direction of the lever portion 151.
  • the movable pin 157 is formed with a protruding portion 157 a that protrudes in a direction intersecting the long axis direction of the movable pin 157.
  • the projecting portion 157a is configured to be able to contact the stepped portion 151b of the lever portion 151.
  • the coil spring 156 has one end in contact with the thrust pin 140 and the other end in contact with the protruding portion 157 a of the movable pin 157. As a result, the coil spring 156 biases the movable pin 157. In other words, the coil spring 156 biases the movable pin 157 along the long axis direction of the lever portion 151 extending from the turning shaft 153 that is a fulcrum of the lever portion 151.
  • the tip of the movable pin 157 opposite to the side where the coil spring 156 is disposed is formed in a curved surface. Further, the movable pin 157 is biased by the coil spring 156, and the tip portion protrudes from the lever portion 151. The distal end portion is configured to enter the lever portion 151 by being pressed against the urging force of the coil spring 156. Further, the movable pin 157 is configured so that the movable pin 157 does not fall out of the lever portion 151 when the projecting portion 157 a contacts the stepped portion 151 b of the lever portion 151.
  • the main body housing 101 is formed with an engaging recess 101a that can engage with the movable pin 157, as shown in FIG. Then, as shown in FIG. 14, the movable pin 157 engages with the engaging recess 101 a, and the lever portion 151 is fixed to the main body housing 101.
  • the position of the lever portion 151 shown in FIG. 14 is an implementation configuration example corresponding to the “operating member storage position” in the present invention.
  • the main body housing 101 in which the engagement recessed part 101a was formed is the implementation structural example corresponding to the "work tool main body" in this invention.
  • the turning member 154 is attached to the main body housing 101 via an O-ring 155 so as to be turnable in the circumferential direction of the spindle 120.
  • the turning member 154 includes a turning portion 154a having a substantially circular cross section and two support portions 154b extending from the turning portion 154a in the long axis direction of the spindle 120.
  • a pivot shaft 153 is held between the two support portions 154b.
  • the lever member 151 is configured to be able to turn in the circumferential direction of the spindle 120 by turning the turning member 154 in the circumferential direction of the spindle 120.
  • the lever portion 151 is configured to be turnable in the circumferential direction of the spindle 120, and is turnable in the circumferential direction of the turning shaft 153 as shown in FIGS. 14 and 18. It is configured.
  • the tip end portion of the thrust pin 140 is formed in a curved surface shape, the coil spring 156 smoothly slides on the surface of the thrust pin 140 when the lever portion 151 is turned. That is, the tip portion of the thrust pin 140 is configured so that the coil spring 156 smoothly slides on the surface of the thrust pin 140 regardless of whether the lever portion 151 is swung in the circumferential direction of the spindle 120 or the swiveling shaft 153. It is formed in a curved shape with respect to the direction. Thereby, the lever part 151 is comprised so that turning in a some direction is possible.
  • the movable pin 157 since the distal end portion of the movable pin 157 is formed in a curved surface shape, the movable pin 157 enters the lever portion 151 when the distal end portion comes into contact with the main body housing 101 when the lever portion 151 is turned.
  • the distal end portion of the movable pin 157 is formed in a curved shape with respect to the respective directions of the circumferential direction of the spindle 120 and the circumferential direction of the turning shaft 153 that are turning directions of the lever portion 151.
  • the rotation control mechanism 104 configured as described above turns the thrust pin 140 to the long axis by turning the lever portion 151 in the circumferential direction of the turning shaft 153 between the position shown in FIG. 14 and the position shown in FIG. Can be moved in the direction.
  • the engaging portion 141 can be engaged with the groove portion 1134 of the clamp shaft holding member 1131. Since the clamp shaft holding member 1131 is rotatable with respect to the spindle 120, depending on the position of the groove portion 1134, if the lever portion 151 is simply turned in the circumferential direction of the turning shaft 153, The groove 1134 may not engage.
  • the engaging portion 141 and the groove portion 1134 are not engaged, the engaging portion 141 and the groove portion 1134 can be engaged by turning the lever portion 151 in the circumferential direction of the spindle 120 as shown in FIG. it can.
  • the lever portion 151 When attaching or detaching the blade 200, the lever portion 151 is turned in the circumferential direction of the spindle 120 in a state where the engaging member 141 and the groove portion 1132 are engaged, so that the clamp shaft holding member 1131 is moved in the circumferential direction of the spindle 120. Control the rotation.
  • clamp shaft 1123 and the clamp shaft holding member 1131 are screwed together by rotating the lever portion 151 in the circumferential direction of the spindle 120 in a state where the clamp shaft 1123 is held unrotatable, or the screw thereof. Can be canceled.
  • the blade 200 can be attached and detached by removing the clamp shaft 1123 from the clamp shaft holding member 1131.
  • the clamp shaft 1123 is screwed and held on the clamp shaft holding member 1131, whereby the blade 200 is sandwiched between the flange 122 and the clamp head 1124.
  • This clamp shaft holding member 1131 is an implementation structural example corresponding to the “holding member” in the present invention.
  • the clamp shaft holding member 1131 is directly screwed with the clamp shaft 1123, the clamp shaft 1123 can be reliably held by the clamp shaft holding member 1131.
  • the third embodiment is different from the second embodiment in the tool holding mechanism 203.
  • the tool holding mechanism 203 is configured such that the screwing member 231 of the clamp shaft holding mechanism 230 is screwed with the spindle 220 as in the first embodiment.
  • symbol is attached
  • a first stepped portion 220a and a second stepped portion 220b are formed inside the spindle 220. Further, a screw thread 220 c that is screwed with the screwing member 231 is formed inside the spindle 220.
  • a guide member 221 is attached to the tip of the spindle 220. As shown in FIG. 24, the guide member 221 is a substantially cylindrical member that is engaged with and fixed to the outside of the spindle 220. In addition, a disk-shaped flange 222 is attached to the guide member 221.
  • the spindle 220, the guide member 221 and the flange 222 are an implementation configuration example corresponding to the “first shaft” in the present invention.
  • the clamp shaft 223 has a clamp head 224 formed integrally with the end of the substantially cylindrical shaft.
  • the clamp shaft 223 can be inserted into the spindle 220 via the guide member 221 and can be attached to and detached from the spindle 220.
  • the other end of the clamp shaft 223 is formed in a spherical shape.
  • the clamp shaft 223 is an implementation configuration example corresponding to the “second shaft” in the present invention.
  • the tool holding mechanism 203 is configured to be able to hold the blade 200 between the flange 222 and the clamp head 224.
  • the flange 222 and the clamp head 224 are implementation configuration examples corresponding to the “first clamp portion” and the “second clamp portion” in the present invention, respectively.
  • the clamp shaft holding mechanism 230 is a mechanism that holds the clamp shaft 223.
  • the clamp shaft holding mechanism 230 is mainly composed of a screwing member 231, a clamp member 232, and a rotational force transmission member 233.
  • the screwing member 231 is a substantially cylindrical member, and is disposed inside the spindle 220. On the outer peripheral surface of the screw member 231, a screw thread 231 a that is screwed with the screw thread 220 c of the spindle 220 is formed.
  • the screwing member 231 is configured to be movable in the long axis direction of the spindle 220 by being screwed with the spindle 220 and rotating.
  • a clamp shaft insertion hole 234 into which the clamp shaft 223 is inserted is formed in the central region of the screwing member 231.
  • the screwing member 231 has a clamp member holding portion 235 connected to the clamp shaft insertion hole 234.
  • the clamp member holding portion 235 is formed in a concave shape with respect to the clamp shaft insertion hole 234.
  • the clamp member holding portion 235 is provided with two engagement concave portions 235a that can be engaged with the convex portions 232b of the clamp member 232.
  • the clamp member holding portion 235 is formed with an inclined surface 235 b inclined with respect to the major axis direction of the spindle 220.
  • an engagement recess 236 that can be engaged with the engagement projection 233 c of the rotational force transmission member 233 is formed on the outer peripheral surface of the screw member 231.
  • the clamp member 232 is a substantially wedge-shaped member and is disposed in the clamp member holding portion 235.
  • the clamp member 232 is configured to hold the clamp shaft 223 in cooperation with the screwing member 231. That is, the clamp member 232 is formed with an inclined surface 232 a that can be engaged with the inclined surface 235 b of the screwing member 231. Further, two convex portions 232 b that can be engaged with the engaging concave portions 235 a of the screwing member 231 are provided on the side surface of the clamp member 232. Furthermore, the clamp member 232 is formed with two movement restricting portions 232c that protrude downward. That is, in the third embodiment, the guide member 221 is not formed with the inner protrusion, and the clamp member 232 is formed with the protrusion.
  • the rotational force transmission member 233 is a member that rotates the screwing member 231 relative to the spindle 220 by transmitting the rotation of the thrust pin 140 to the screwing member 231.
  • the rotational force transmission member 233 has a main body portion 233a formed in a substantially disc shape. As shown in FIG. 27, the main body 233a is formed with a substantially rectangular engagement hole 233b with which the engagement portion 141 of the thrust pin 140 is engaged. As shown in FIG. 26, the rotational force transmitting member 233 is formed with two convex portions 233c that can be engaged with the engaging concave portion 236 of the screwing member 231, protruding from the main body portion 233a.
  • the screw member 231 is rotated by the rotational force transmitting member 233 being rotated by the thrust pin 140. Thereby, the screwing member 231 is relatively moved in the long axis direction of the spindle 220. As the screwing member 231 moves, the inclined surface 235a of the clamp member holding portion 235 and the inclined surface 232a of the clamp member 232 engage with each other, whereby the screwing member 231 moves in the major axis direction of the spindle 220. The clamp member 232 is converted into the movement of the spindle 220 in the radial direction. That is, the clamp member 232 moves in the radial direction of the spindle 220 and the clamp shaft 223 inserted into the spindle 220 is held.
  • This clamp member 232 is an implementation structural example corresponding to the "holding member" in this invention.
  • the thrust pin 140 is moved in the longitudinal direction by turning the lever portion 151 in the circumferential direction of the turning shaft 153 between the position shown in FIG. 23 and the position shown in FIG. Can do.
  • the engaging portion 141 can be engaged with the engaging hole 233b of the rotation transmitting member 233. Since the rotation transmitting member 233 is rotatable with respect to the spindle 220, depending on the position of the engagement hole 233b, the rotation of the lever 151 around the rotation shaft 153 is not related to the engagement 141.
  • the joint hole 233b may not engage.
  • the lever portion 151 is turned around the long axis of the spindle 220, so that the engaging portion 141 and the engaging hole 233b are moved. Can be engaged.
  • the lever portion 151 is turned in the circumferential direction of the spindle 220, so that the rotational force transmitting member 233 is moved in the circumferential direction of the spindle 220. Can be rotated.
  • the convex portion 233c of the rotational force transmission member 233 rotates the screwing member 231 in the circumferential direction of the spindle 220.
  • the screwing member 231 rotates relative to the spindle 220 and moves in the major axis direction of the spindle 220.
  • the clamp shaft 223 inserted in the clamp shaft insertion hole 234 is held by the clamp member 232 by the screw member 231 moving to the side (upward direction) where the cam lever mechanism 150 is arranged in the longitudinal direction of the spindle 220.
  • the clamp member 232 held by the clamp member holding portion 235 also moves upward.
  • the rotational force transmission member 233 comes into contact with the second stepped portion 220b and the clamp member 232 comes into contact with the rotational force transmission member 233, the clamp member 232 is sandwiched between the rotational force transmission member 233 and the screwing member 231. The upward movement of the clamp member 232 is restricted.
  • the clamp member 232 is moved in the radial direction of the clamp shaft 223 by the screwing of the screwing member 231 and the spindle 220. That is, since the movement caused by the screwing of the screwing member 231 and the spindle 220 is converted into the movement of the clamp member 232 in the radial direction of the clamp shaft 223, the holding force for holding the clamp shaft 223 is large. Is generated.
  • the movable pin 157 engages with the engaging recess 101a, and the lever portion 151 is fixed to the main body housing 101. Further, since the tip of the movable pin 157 is formed in a curved shape with respect to the circumferential direction of the spindle 120 and the circumferential direction of the turning shaft 153, the lever portion 151 can be turned in any of a plurality of directions. In addition, the movable pin 157 enters the lever portion 151 by the tip portion coming into contact with the main body housing 101. As a result, the movable pin 157 can be engaged with or disengaged from the engaging recess 101a even if the lever portion 151 is turned in any of a plurality of directions.
  • the lever portion 151 can turn in the circumferential direction of the turning shaft 153 and in the circumferential direction of the spindles 120 and 220.
  • the lever part 151 can turn in a plurality of directions. Since the lever 151 is provided with a movable pin 157 having a curved tip, the movable pin 157 is engaged with the engagement recess 101a of the main body housing 101 regardless of the direction of rotation. The Accordingly, the lever portion 151 is held by the main body housing 101 regardless of which direction the lever portion 151 is turned. In particular, it is useful in the electric vibration tool 100 that needs to turn the lever portion 151 in a plurality of directions in order to turn the screwing member with the thrust pin 140 engaged with the screwing member.
  • the clamp shaft holding mechanism 330 in the tool holding mechanism 303 is configured such that the clamp member 331 holds the clamp shaft 323 by the urging force of the O-ring 332 and the coil spring 334.
  • symbol is attached
  • the spindle 320 in the fourth embodiment is a hollow cylindrical member, and is arranged so that the major axis direction extends in a direction intersecting the output shaft 111 of the motor 110. .
  • the spindle 320 is supported by the main body housing 101 via bearings 325 and 326 so as to be rotatable around the long axis direction at two locations in the long axis direction.
  • the spindle 320 has a clamp member insertion hole 320a penetrating in the radial direction of the spindle 320 in an intermediate region between the bearings 325 and 326 in the long axis direction.
  • FIG. 30 the spindle 320 in the fourth embodiment is a hollow cylindrical member, and is arranged so that the major axis direction extends in a direction intersecting the output shaft 111 of the motor 110. .
  • the spindle 320 is supported by the main body housing 101 via bearings 325 and 326 so as to be rotatable around the long axis direction at two locations in the
  • an engagement pin that penetrates the spindle 320 in a direction intersecting the clamp member insertion hole 320a.
  • An insertion hole 320b is formed.
  • a flange 322 is attached to the tip of the spindle 320.
  • the spindle 320 corresponds to the “first shaft” according to the present invention
  • the flange 322 corresponds to the “first clamp portion” according to the present invention.
  • the clamp shaft holding mechanism 330 is a mechanism that holds the end of the clamp shaft 323 opposite to the clamp head 324. As shown in FIGS. 30 to 32, the clamp shaft holding mechanism 330 is mainly configured by a clamp member 331, an O-ring 332, an annular member 333, and a coil spring 334.
  • the clamp members 331 are disposed at two opposing positions in the circumferential direction of the spindle 320, and are inserted through the clamp member insertion holes 320a of the spindle 320.
  • the clamp member 331 is configured to be movable in the radial direction of the spindle 320 through the clamp member insertion hole 320a.
  • the clamp member 331 has a plurality of convex portions that can be engaged with the engagement grooves of the clamp shaft 323 at positions facing the clamp shaft 323.
  • the clamp member 331 has an inclined surface 331 a that is inclined with respect to the major axis direction of the spindle 320.
  • the inclined surface 331a is configured to be engageable with the inclined surface of the annular member 333.
  • an O-ring 332 is disposed outside the clamp member 331.
  • the O-ring 332 biases the clamp member 331 in the radial direction toward the center of the spindle 320. Thereby, the convex part formed in the clamp member 331 engages with the engagement groove of the clamp shaft 323 arranged inside the spindle 320, thereby holding the clamp shaft 323. Further, the O-ring 332 applies an urging force for holding the posture of the clamp member 331 to the clamp member 331 when the clamp member 331 does not hold the clamp shaft 323.
  • the annular member 333 is an annular member disposed so as to surround the outside of the clamp member 331 in the radial direction of the spindle 320.
  • the annular member 333 is disposed so as to be movable in the long axis direction of the spindle 320.
  • the annular member 333 has an inclined surface that engages with the inclined surface 331 a of the clamp member 331.
  • the coil spring 334 is disposed around the spindle 320 along the long axis direction of the spindle 320.
  • the annular member 333 is urged in the long axis direction of the spindle 320 by the urging force of the coil spring 334, and by this engagement with the inclined surface 331 a of the clamp member 331, the clamp member 331 is made to have a diameter of the spindle 320. Energized in the direction. That is, the clamp member 331 is moved in the radial direction of the spindle 320 by the engagement of the inclined surfaces of the clamp member 331 and the annular member 333.
  • the clamp member 331 is biased in the radial direction of the spindle 320 by the O-ring 332 and holds the clamp shaft 323. Further, the annular member 333 biased by the coil spring 334 engages with the inclined surface 331 a of the clamp member 331, thereby converting the biasing force of the coil spring 334 into the radial biasing force of the spindle 320. Accordingly, the coil spring 334 biases the clamp member 331 in the radial direction of the spindle 320 and holds the clamp shaft 323. That is, the clamp shaft 323 is held by the urging force of the O-ring 332 and / or the urging force of the coil spring 334.
  • the coil spring 334 biases the annular member 333, thereby holding the clamp shaft 323 and urging the clamp shaft 323 upward. Accordingly, the clamp head 324 is urged in the direction approaching the flange 322, and the blade 200 is sandwiched between the flange 322 and the clamp head 324.
  • the tool holding release mechanism 304 is a mechanism for making the blade 200 held between the flange 322 and the clamp shaft 323 detachable by releasing the holding of the clamp shaft 323 held by the clamp shaft holding mechanism 330.
  • the tool holding / release mechanism 304 is mainly composed of a thrust pin 340, an engaging pin 341, a clamp shaft holding / release member 342, a cam lever 350 mechanism, and the like.
  • the thrust pin 340 is disposed inside the spindle 320 so as to be slidable in the major axis direction of the spindle 320.
  • the engagement pin 341 is inserted through the engagement pin insertion hole 320 b of the spindle 320 and is engaged with the clamp shaft holding release member 342.
  • the engaging pin 341 is configured to move in contact with the lower end of the thrust pin 340 as the thrust pin 340 moves.
  • the clamp shaft holding / releasing member 342 is a cylindrical member surrounding the outer periphery of the spindle 320. As shown in FIG. The clamp shaft holding / releasing member 342 is configured to be movable in the major axis direction of the spindle 320 together with the engagement pin 341. Further, the clamp shaft holding / releasing member 342 is configured to be movable in the longitudinal direction of the spindle 320 together with the annular member 333 by engaging with the annular member 333.
  • the cam lever mechanism 350 is a member that contacts the thrust pin 340 and slides the thrust pin 340 in the major axis direction of the spindle 320.
  • the cam lever mechanism 350 is mainly composed of a lever portion 351, an eccentric portion 352, and a turning shaft 353.
  • the lever portion 351 is configured to turn only around the turning shaft 353.
  • a coil spring 356 and a movable pin 357 are accommodated in the lever portion 351.
  • the coil spring 356 and the movable pin 357 are disposed along the long axis direction of the lever portion 351.
  • the coil spring 356 has one end in contact with the eccentric portion 352 and the other end in contact with the movable pin 357.
  • the coil spring 356 biases the movable pin 357.
  • the coil spring 356 biases the movable pin 357 along the long axis direction of the lever portion 351 extending from the turning shaft 353 that is a fulcrum of the lever portion 351.
  • the tip of the movable pin 357 opposite to the side in contact with the coil spring 356 has a curved surface. That is, it is formed in a curved shape with respect to the circumferential direction of the turning shaft 353 that is the turning direction of the lever portion 351. Further, the movable pin 357 is configured to be urged by the coil spring 356 so that the distal end portion protrudes from the lever portion 351 and enters the lever portion 351 by pressing the distal end portion against the urging force of the coil spring 356. Has been.
  • the tool holding release mechanism 304 configured as described above turns the lever portion 351 from the clamp position to the release position and slides the thrust pin 340, whereby the engagement pin 341 and the clamp shaft holding release member 342 are moved to the spindle. 320 moves downward in the major axis direction. At this time, the clamp shaft holding / releasing member 342 moves together with the annular member 333 downward in the major axis direction of the spindle 320, and moves the clamp member 331 in the major axis direction of the spindle 320.
  • the clamp shaft holding / releasing member 342 moves downward together with the annular member 333 in the longitudinal direction of the spindle 320, so that the inclined surface 331a of the annular member 333 and the clamp member 331 is moved.
  • the engagement is released.
  • the urging force of the coil spring 334 is not transmitted to the clamp member 331, and the urging force of the coil spring 334 acting on the clamp shaft 323 is released.
  • the holding of the clamp shaft 323 can be released, and the clamp shaft 323 can be detached from the spindle 320. Thereby, the blade 200 can be removed.
  • the lever portion 351 is swung from the release position to the clamp position with the blade 200 disposed between the flange 322 and the clamp head 324 and the clamp shaft 323 inserted into the spindle 320.
  • the thrust pin 340 and the annular member 333 are moved upward in the longitudinal direction of the spindle 320 by the biasing force of the coil spring 334.
  • the inclined surface of the annular member 333 and the inclined surface 331a of the clamp member 331 are engaged, and the urging force of the coil spring 334 is converted into the urging force in the radial direction of the spindle 320.
  • the clamp member 331 is moved toward the radial center of the spindle 320.
  • the clamp shaft 323 is hold
  • the urging force of the coil spring 334 moves the clamp head 324 in the direction close to the flange 322 by holding the clamp shaft 323 via the clamp member 331 and moving the held clamp shaft 323 upward.
  • the blade 200 is sandwiched between the flange 322 and the clamp head 324.
  • the lever portion 351 when the lever portion 351 is located at the clamp position, the movable pin 357 engages with the engagement recess 101 a of the main body housing 101, and the lever portion 351 is relative to the main body housing 101. Fixed.
  • the position of the lever portion 351 shown in FIG. 30 is an implementation configuration example corresponding to the “operating member storage position” in the present invention.
  • the movable pin 357 comes into contact with the main body housing 101, so that the tip end portion resists the biasing force of the coil spring 356. It is pressed and enters the lever portion 351. That is, since the distal end portion of the movable pin 357 is formed in a curved shape, when the lever portion 351 is turned, the distal end portion comes into contact with the main body housing 101, so that the movable pin 357 enters the lever portion 351. . Thereby, by turning the lever portion 351, the movable pin 357 can be engaged with the engagement concave portion 101a, or the engagement can be released.
  • the clamp shaft 323 arranged inside the spindle 320 can be held by the urging force of the O-ring 332 or the coil spring 334 arranged outside the spindle 320. Can be made thinner. Therefore, the spindle 320 is reduced in weight, and the electric vibration tool 100 can be reduced in weight.
  • the rotational movement of the output shaft 111 causes the eccentric shaft 112 and the bearing to rotate. 113 is converted into a reciprocating motion in the direction indicated by arrow A (hereinafter referred to as A direction).
  • a direction The reciprocating motion in the A direction is transmitted to the driven arm 114, and is predetermined in the circumferential direction (hereinafter referred to as the B direction) around the spindles 120, 220, and 320 indicated by the arrow B around the spindle connecting portion 115. It is converted into a rotational motion that makes an angle of.
  • the spindle 120 connected to the spindle connecting portion 115 is driven to reciprocate in the B direction.
  • the blade 200 sandwiched between the flanges 122, 222, 322 and the clamp heads 1124, 224, 324 is vibrated to perform processing such as cutting on the workpiece.
  • the movable pins 157 and 357 are engaged with the engagement recesses of the main body housing 101, whereby the lever portions 151 and 351 are engaged. Is retained. That is, since the lever portions 151 and 351 are held in a state where the blade 200 is held, the lever portions 151 and 351 are securely held when the electric vibration tool 100 performs a machining operation on the workpiece. The Thereby, the movement of the lever parts 151 and 351 during the processing operation is suppressed.
  • the coil springs 156 and 356 and the movable pins 157 and 357 are accommodated inside the lever portions 157 and 357, so that the lever portions 151 and 351 are held from the outside.
  • the lever portions 151 and 351 are held from the outside.
  • the holding member is provided on the main body housing 101 side, there is a possibility that the user's operation may be hindered when the lever portions 151 and 351 are operated.
  • the coil springs 156 and 356 and the movable pins 157 and 357 are accommodated in the lever portions 151 and 351, the user's operation is not hindered.
  • the coil springs 156, 356 extend from the pivot shafts 153, 353, which are fulcrums of the lever portions 151, 351, in the major axis direction of the lever portions 151, 351. Is arranged. Therefore, the movable pins 157 and 357 are biased in the major axis direction of the lever portions 151 and 351 by the coil springs 156 and 356. Therefore, the lever portions 151 and 351 are held by the main body housing 101 at portions spaced from the fulcrums of the lever portions 151 and 351. This is particularly effective in a configuration that holds the lever portions 151 and 351 that perform the turning operation.
  • the coil springs 156 and 356 and the movable pins 157 and 357 are accommodated in the lever portions 157 and 357.
  • the present invention is not limited to this.
  • the coil springs 156, 356 and the movable pins 157, 357 may be disposed so as to be exposed on the surfaces of the lever portions 157, 357.
  • the coil springs 156 and 356 and the movable pins 157 and 357 may be provided on the main body housing 101 side.
  • clamp member 132, 232 only one clamp member 132, 232 is provided, but a configuration having a plurality of clamp members may be used.
  • the blade 200 is used as the tip tool.
  • the present invention is not limited to this.
  • another type of tip tool such as a polishing pad may be attached as the tip tool.
  • the electric vibration tool 100 is used as the work tool, but the present invention is not limited to this.
  • the present invention can be applied to a work tool in which the tip tool rotates, such as a grinder or a circular saw, as long as the work tool holds the tip tool.
  • the electric vibration tool 100 is an example of a configuration corresponding to the “work tool” of the present invention.
  • the blade 200 is an example of a configuration corresponding to the “tip tool” of the present invention.
  • the spindles 120, 220, and 320 are an example of a configuration corresponding to the “first shaft” of the present invention.
  • the flanges 122, 222, and 322 are an example of a configuration corresponding to the “first clamp portion” of the present invention.
  • the clamp shafts 123, 223, 323, and 1123 are an example of a configuration corresponding to the “second shaft” of the present invention.
  • the clamp heads 124, 224, 324, and 1124 are an example of a configuration corresponding to the “second clamp portion” of the present invention.
  • the screwing member 131 is an example of a configuration corresponding to the “color” of the present invention.
  • the clamp member 132 is an example of a configuration corresponding to the “holding member” of the present invention.
  • the rotation transmission member 133 is an example of a configuration corresponding to the “rotation transmission member” of the present invention.
  • the clamp member holding portion 135 is an example of a configuration corresponding to the “concave portion” of the present invention.
  • the engaging recess 135a is an example of a configuration corresponding to the “regulator” of the present invention.
  • the inner protrusion 121b is an example of a configuration corresponding to the “movement restriction member” of the present invention.
  • the clamp shaft holding member 1131 is an example of a configuration corresponding to the “holding member” of the present invention.
  • the clamp member 232 is an example of a configuration corresponding to the “holding member” of the present invention.
  • the clamp member 331 is an example of a configuration corresponding to the “holding member” of the present invention.
  • the lever portions 151 and 351 are an example of a configuration corresponding to the “operation member” of the present invention.
  • the coil springs 156 and 357 are an example of a configuration corresponding to the “elastic member” of the present invention.
  • the movable pins 157 and 357 are an example of a configuration corresponding to the “engagement member” of the present invention.
  • the main body housing 101 is an example of a configuration corresponding to the “work tool main body” of the present invention.
  • the clamp shaft holding member 1131 is an example of a configuration corresponding to the “screwing member” of the present invention.
  • the screwing member 231 is an example of a configuration corresponding to the “screwing member” of the present invention.
  • the screwing member 231 is an example of a configuration corresponding to the “color” of the present invention.
  • the clamp member 232 is an example of a configuration corresponding to the “movable member” of the present invention.
  • the working tool according to the present invention can be configured in the following manner.
  • (Aspect 1) “A work tool according to claim 1, The first shaft and the second shaft are arranged in parallel to each other in the axial direction, and the second shaft is arranged inside the first shaft, The work tool, wherein the second shaft has a chamfered portion having a chamfered tip on the side opposite to the second clamp portion. "
  • a work tool according to claim 13 The operation member includes an elastic member and an engagement member biased by the elastic member, The work tool is configured so that the engagement member engages with the work tool main body at the storage position of the operation member.
  • a work tool according to aspect 4 or 5 The operation member is configured to extend in a predetermined direction from a fulcrum supporting the operation member, The work tool, wherein the elastic member is configured to bias the engaging member along the predetermined direction.

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Abstract

[Problem] To provide an improved technique pertaining to a work tool in which a clamped distal end tool is driven. [Solution] An electrically powered vibration tool (100) includes a spindle (120) including a flange (122) and a clamp shaft (123) including a clamp head (124), and is configured to drive a blade (200) that is clamped between the flange (122) and the clamp head (124). The electrically powered vibration tool (100) includes a screwing member (131) that screws with the spindle (120), and a clamp member (132) that is engaged with the screwing member (131). The configuration is such that movement of the screwing member (131) in the long axis direction of the spindle (120) when the screwing member (131) has rotated in relation to the spindle (120) causes the clamp member (132) to move in the radial direction of the clamp shaft (123) and retain the clamp shaft (123).

Description

作業工具Work tools
　本発明は、先端工具を駆動させる作業工具に関する。 The present invention relates to a work tool for driving a tip tool.
　ＷＯ２００５／１０２６０５公報には、作業スピンドルと締結要素に挟持された工具を駆動させる作業工具が記載されている。この作業工具は、締結要素が作業スピンドルに対して、工具を保持するクランプ位置と、作業スピンドルから取り外される開放位置の間で摺動可能に構成されている。クランプ位置においては、作業スピンドルの内側に設けられた止めアセンブリが、締結要素のクランプシャフトをクランプする。すなわち、作業スピンドルの内側に設けられたバネ要素により与えられる付勢力によって、止めアセンブリのクランプ部材がクランプシャフトの径方向に移動することにより、クランプシャフトをクランプしている。これにより、作業スピンドルと締結要素の間に工具をクランプしている。この止めアセンブリは、コックレバーを操作することによるスラスト部材の軸方向変移を介して、締結要素のクランプを解除する。 WO 2005/102605 describes a work tool for driving a tool sandwiched between a work spindle and a fastening element. The work tool is configured such that the fastening element is slidable with respect to the work spindle between a clamp position for holding the tool and an open position where it is removed from the work spindle. In the clamping position, a stop assembly provided inside the working spindle clamps the clamping shaft of the fastening element. That is, the clamp shaft is clamped by the clamp member of the stop assembly moving in the radial direction of the clamp shaft by the biasing force provided by the spring element provided inside the work spindle. This clamps the tool between the working spindle and the fastening element. This stop assembly releases the clamping element clamping via axial displacement of the thrust member by manipulating the cock lever.
　ＷＯ２００５／１０２６０５公報に記載された作業工具は、コックレバーを操作することでクランプシャフトを保持することで、先端工具としての工具をクランプしている。しかしながら、クランプされた先端工具が駆動される作業工具に関連する技術に関しては、さらなる改良の余地がある。 The work tool described in WO2005 / 102605 clamps a tool as a tip tool by holding a clamp shaft by operating a cock lever. However, there is room for further improvement with regard to techniques related to work tools in which the clamped tip tool is driven.
　そこで、本発明は、上記に鑑み、作業工具において、クランプされた先端工具が駆動される作業工具に関連する技術において更なる改良技術を提供することを目的とする。 Therefore, in view of the above, the present invention has an object to provide a further improvement technique in a technique related to a work tool in which a clamped tip tool is driven.
　上記課題は請求項１または９の作業工具によって解決される。作業工具の好ましい形態によれば、着脱可能に装着される先端工具を駆動させる作業工具が構成される。作業工具は、第１クランプ部を有する第１シャフトと、第２クランプ部を有する第２シャフトとを有し、第１クランプ部と第２クランプ部で先端工具を挟持するように構成されている。当該作業工具は、第１シャフトと螺合可能なカラーと、カラーと係合可能な保持部材とを有している。そして、第１シャフトに対してカラーが回転したときの第１シャフトの長軸方向へのカラーの移動によって、保持部材が第２シャフトの径方向に移動して第２シャフトを保持するように構成されている。なお、第１クランプ部と第２クランプ部による先端工具の挟持は、第１クランプ部と第２クランプ部の間に先端工具が配置された状態で、保持部材が第２シャフトを保持することによって達成される。なお、第２シャフトは、保持部材の移動によって保持される構成が好ましく、また、保持部材と他の部材との協働によって保持されてもよい。典型的には、第２シャフトは、保持部材とカラー、第１シャフト等によって保持されることが好ましい。 The above problem is solved by the work tool according to claim 1 or 9. According to the preferable form of a work tool, the work tool which drives the tip tool with which the attachment or detachment is mounted is comprised. The work tool has a first shaft having a first clamp part and a second shaft having a second clamp part, and is configured to sandwich the tip tool between the first clamp part and the second clamp part. . The work tool includes a collar that can be screwed to the first shaft, and a holding member that can be engaged with the collar. The holding member moves in the radial direction of the second shaft and holds the second shaft by the movement of the collar in the long axis direction of the first shaft when the collar rotates with respect to the first shaft. Has been. In addition, the clamping of the tip tool by the first clamp portion and the second clamp portion is performed by the holding member holding the second shaft in a state where the tip tool is disposed between the first clamp portion and the second clamp portion. Achieved. The second shaft is preferably held by the movement of the holding member, and may be held by the cooperation of the holding member and another member. Typically, the second shaft is preferably held by a holding member, a collar, the first shaft, and the like.
　本形態によれば、カラーと第１シャフトの螺合によって、保持部材を第２シャフトの径方向に移動させる。すなわち、カラーと第１シャフトの螺合によって、カラーの第１シャフトの長軸方向への移動を保持部材の第２シャフトの径方向への移動に変換している。そのため、保持部材が第２シャフトを保持するための保持力に関して、大きな保持力が発生される。 According to this embodiment, the holding member is moved in the radial direction of the second shaft by screwing the collar and the first shaft. That is, the movement of the collar in the major axis direction of the first shaft is converted into the movement of the holding member in the radial direction of the second shaft by screwing the collar and the first shaft. Therefore, a large holding force is generated with respect to the holding force for the holding member to hold the second shaft.
　作業工具の更なる形態によれば、カラーは凹部を有しており、保持部材はカラーの凹部に配置されている。 According to a further form of the work tool, the collar has a recess and the holding member is disposed in the recess of the collar.
　本形態によれば、保持部材が凹部によって保持されることで、保持部材を保持するための特別な部材を設けることなく、カラーによって保持部材が保持される。 According to this embodiment, the holding member is held by the recess, so that the holding member is held by the collar without providing a special member for holding the holding member.
　作業工具の更なる形態によれば、カラーは、第１シャフトの内側に配置されている。 According to a further form of the work tool, the collar is arranged inside the first shaft.
　本形態によれば、カラーが第１シャフトの内側に配置されているため、作業工具が第１シャフトの外側に向かう方向に大型化することを抑制することができる。 According to this embodiment, since the collar is disposed inside the first shaft, it is possible to prevent the work tool from becoming large in the direction toward the outside of the first shaft.
　作業工具の更なる形態によれば、当該作業工具は、第１シャフトに対してカラーを回転させる回転部材を有している。また、保持部材は、第２シャフトを保持している状態において、第１シャフトの長軸方向に関して、カラーと回転部材に挟持されている。 According to a further form of the work tool, the work tool has a rotating member that rotates the collar relative to the first shaft. Further, the holding member is held between the collar and the rotating member in the major axis direction of the first shaft in a state where the second shaft is held.
　本形態によれば、回転部材の動作によって、カラーを回転させることができる。これにより保持部材を簡単な操作によって移動させることができる。また、保持部材は、カラーと回転部材に挟持されているため、保持部材が第２シャフトを保持している状態において、保持部材の保持が予期せず解除されてしまうことを抑制できる。 According to this embodiment, the collar can be rotated by the operation of the rotating member. Thereby, the holding member can be moved by a simple operation. In addition, since the holding member is sandwiched between the collar and the rotating member, it is possible to prevent the holding member from being unexpectedly released while the holding member holds the second shaft.
　作業工具の更なる形態によれば、回転部材は、カラーに係合可能な回転伝達部材と、回転伝達部材に対して着脱可能に係合する操作部材とを有している。 According to a further form of the work tool, the rotation member has a rotation transmission member that can be engaged with the collar and an operation member that is detachably engaged with the rotation transmission member.
　本形態によれば、操作部材の操作によって、カラーと回転伝達部材が回転される。これにより保持部材を簡単な操作によって移動させることができる。また、操作部材は、回転伝達部材に対して着脱可能であるため、回転伝達部材を回転させる場合のみ、操作部材を回転伝達部材に係合させる。したがって、作業工具の動作中に操作部材の移動が抑制される。 According to this embodiment, the collar and the rotation transmission member are rotated by the operation of the operation member. Thereby, the holding member can be moved by a simple operation. In addition, since the operation member can be attached to and detached from the rotation transmission member, the operation member is engaged with the rotation transmission member only when the rotation transmission member is rotated. Therefore, the movement of the operation member is suppressed during the operation of the work tool.
　作業工具の更なる形態によれば、当該作業工具は、第１シャフトに対してカラーが回転して第１シャフトの長軸方向へ移動したときに、保持部材の第１シャフトの長軸方向への移動を規制する移動規制部材を有する。 According to the further form of a working tool, when the collar rotates with respect to the first shaft and moves in the major axis direction of the first shaft, the working tool moves in the major axis direction of the first shaft of the holding member. A movement restricting member for restricting the movement of.
　本形態によれば、保持部材が移動規制部材によって第１シャフトの長軸方向への移動が規制される。すなわち、カラーを回転させるだけで、カラーと保持部材の係合を解除することができる。 According to this embodiment, the holding member is restricted from moving in the major axis direction of the first shaft by the movement restricting member. That is, the engagement between the collar and the holding member can be released simply by rotating the collar.
　作業工具の更なる形態によれば、カラーは、第２シャフトが挿入される穴部を有している。そして、第２シャフトは、穴部に挿入された状態で保持部材に保持されるように構成されている。さらに、カラーは、第２シャフトが穴部に挿入されていない状態において、保持部材が穴部に移動することを規制する規制部を有する。 According to a further form of the work tool, the collar has a hole into which the second shaft is inserted. And the 2nd shaft is comprised so that it may be hold | maintained at a holding member in the state inserted in the hole. Furthermore, the collar has a restricting portion that restricts the holding member from moving to the hole when the second shaft is not inserted into the hole.
　本形態によれば、第２シャフトは、穴部に挿入されて保持されるため、第２シャフトの周囲をカラーが囲むことによって、第２シャフトが強固に保持される。また、保持部材が穴部に移動することを規制する規制部が形成されているため、第２シャフトを穴部に挿入する際に、保持部材が第２シャフトの挿入を妨げることを抑制できる。これにより、第２シャフトが確実に穴部に挿入される。 According to this embodiment, since the second shaft is inserted and held in the hole, the second shaft is firmly held by surrounding the second shaft with the collar. Moreover, since the control part which controls that a holding member moves to a hole part is formed, when inserting a 2nd shaft into a hole part, it can suppress that a holding member prevents insertion of a 2nd shaft. As a result, the second shaft is reliably inserted into the hole.
　作業工具の更なる形態によれば、保持部材は単一の部材である。 According to a further form of the work tool, the holding member is a single member.
　本形態によれば、保持部材を複数設ける必要がないため、作業工具の部品点数を少なくすることができる。 According to this embodiment, since it is not necessary to provide a plurality of holding members, the number of parts of the work tool can be reduced.
　また、作業工具の別の好ましい形態によれば、着脱可能に装着される先端工具を駆動させる作業工具が構成される。作業工具は、第１クランプ部を有する第１シャフトと、第２クランプ部を有するとともに、第１シャフトに対して相対移動可能な第２シャフトとを有し、第１クランプ部と第２クランプ部で先端工具を挟持するように構成される。当該作業工具は、第２シャフトに係合して当該第２シャフトを保持する保持部材と、保持部材を第２シャフトに対して移動させる操作部材を有している。そして、操作部材の収納位置において、操作部材が作業工具本体に係合するように構成されている。 Further, according to another preferable mode of the work tool, the work tool for driving the tip tool that is detachably mounted is configured. The work tool includes a first shaft having a first clamp portion, a second clamp portion, and a second shaft that is movable relative to the first shaft. The first clamp portion and the second clamp portion It is comprised so that a tip tool may be clamped by. The work tool includes a holding member that engages with the second shaft and holds the second shaft, and an operation member that moves the holding member relative to the second shaft. The operation member is configured to engage with the work tool main body at the operation member storage position.
　本形態によれば、操作部材が作業工具本体に係合するため、被加工材を加工する際に、操作部材が収納位置で確実に保持される。 According to this embodiment, since the operating member is engaged with the work tool main body, the operating member is securely held at the storage position when the workpiece is processed.
　作業工具の更なる形態によれば、操作部材は、弾性部材と、弾性部材に付勢された係合部材とを有している。そして、操作部材の収納位置において、係合部材が作業工具本体に係合するように構成されている。 According to a further form of the work tool, the operation member has an elastic member and an engagement member biased by the elastic member. The engaging member is configured to engage with the work tool main body at the operation member storage position.
　本形態によれば、係合部材が作業工具本体に係合するため、被加工材を加工する際に、操作部材が収納位置で確実に保持される。典型的には、付勢部材の付勢力によって係合部材が作業工具本体に押し付けられることで、操作部材が収納位置で保持されていることが好ましい。一方で、係合部材と係合する凹部や凸部等が作業工具本体に設けられており、係合部材と凹部や凸部の係合により、操作部材が収納位置で保持されていてもよい。 According to this embodiment, since the engaging member is engaged with the work tool main body, the operation member is reliably held at the storage position when the workpiece is processed. Typically, it is preferable that the operating member is held at the storage position by pressing the engaging member against the work tool main body by the biasing force of the biasing member. On the other hand, the work tool main body may be provided with a recess, a projection, or the like that engages with the engagement member, and the operation member may be held in the storage position by the engagement of the engagement member with the recess or the projection. .
　作業工具の更なる形態によれば、操作部材には、弾性部材を収容可能な収容部が形成されている。 According to a further form of the work tool, the operation member is formed with a housing portion capable of housing the elastic member.
　本形態によれば、弾性部材が操作部材の収容部に収容されているため、操作部材を操作する際に、弾性部材が操作部材の操作を阻害することを抑制できる。 According to this embodiment, since the elastic member is accommodated in the accommodating portion of the operation member, it is possible to suppress the elastic member from obstructing the operation of the operation member when the operation member is operated.
　作業工具の更なる形態によれば、操作部材は、当該操作部材が支持される支点から所定方向に延在する構成である。また、弾性部材は、当該所定方向に沿って係合部材を付勢するように構成されている。 According to a further aspect of the work tool, the operation member is configured to extend in a predetermined direction from a fulcrum on which the operation member is supported. The elastic member is configured to urge the engaging member along the predetermined direction.
　本形態によれば、弾性部材によって操作部材の支点から延在する方向に係合部材が付勢されるため、係合部材が作業工具本体と確実に係合する。 According to this embodiment, since the engaging member is urged by the elastic member in the direction extending from the fulcrum of the operating member, the engaging member is reliably engaged with the work tool main body.
　作業工具の更なる形態によれば、操作部材は、複数の方向に移動可能に構成されており、複数の方向のうちの少なくとも１つの方向への移動によって操作部材が収納される収納位置に配置可能に構成されている。そして、操作部材の収納位置において、操作部材が作業工具本体に係合するように構成されている。 According to a further aspect of the work tool, the operation member is configured to be movable in a plurality of directions, and is disposed at a storage position where the operation member is stored by movement in at least one of the plurality of directions. It is configured to be possible. The operation member is configured to engage with the work tool main body at the operation member storage position.
　本形態によれば、操作部材が複数の方向に移動可能な作業工具において、操作部材が収納位置において作業工具本体に係合される。この場合、操作部材は、複数の方向のそれぞれの移動に対応して、作業工具本体と係合可能に構成されていてもよい。 According to this embodiment, in the work tool in which the operation member can move in a plurality of directions, the operation member is engaged with the work tool main body at the storage position. In this case, the operation member may be configured to be engageable with the work tool main body corresponding to each movement in a plurality of directions.
　作業工具の更なる形態によれば、保持部材は、第１シャフトと第２シャフトのうちの少なくとも一方のシャフトと螺合可能な螺合部材を有する。そして、操作部材は、螺合部材を回動させるように構成されている。 According to a further form of the work tool, the holding member has a screwing member that can be screwed with at least one of the first shaft and the second shaft. The operation member is configured to rotate the screwing member.
　本形態によれば、操作部材は螺合部材を回動させる構成であるため、操作部材が螺合部材と係合するための移動と、操作部材が螺合部材を回動させるための移動が必要となる。すなわち、操作部材が複数の方向に移動する構成において、収納位置において操作部材が作業方向本体に保持される。 According to this embodiment, since the operation member is configured to rotate the screwing member, movement for the operation member to engage with the screwing member and movement for the operation member to rotate the screwing member are performed. Necessary. That is, in the configuration in which the operation member moves in a plurality of directions, the operation member is held by the work direction main body at the storage position.
　作業工具の更なる形態によれば、螺合部材は、第２シャフトと螺合して、第２シャフトを保持するように構成されている。 According to a further form of the work tool, the screwing member is configured to be screwed with the second shaft to hold the second shaft.
　本形態によれば、螺合部材と第２シャフトが直接螺合するため、螺合部材によって第２シャフトが確実に保持される。 According to this embodiment, since the screwing member and the second shaft are directly screwed together, the second shaft is securely held by the screwing member.
　作業工具の更なる形態によれば、螺合部材は、第１シャフトと螺合するカラーとして構成されている。また、当該作業工具は、カラーに係合され第２シャフトを保持可能な可動部材を有している。そして、第１シャフトに対してカラーが回転したときの第１シャフトの長軸方向へのカラーの移動によって、可動部材が第２シャフトの径方向に移動して第２シャフトを保持するように構成されている。 According to a further form of the work tool, the screwing member is configured as a collar screwed with the first shaft. The work tool includes a movable member that is engaged with the collar and can hold the second shaft. The movable member moves in the radial direction of the second shaft by the movement of the collar in the long axis direction of the first shaft when the collar rotates with respect to the first shaft, and holds the second shaft. Has been.
　本形態によれば、カラーと第１シャフトの螺合によって、可動部材が第２シャフトの径方向に移動される。すなわち、カラーと第１シャフトの螺合によって、カラーの第１シャフトの長軸方向への移動を可動部材の第２シャフトの径方向への移動に変換する。これにより、可動部材によって第２シャフトを保持するための保持力に関して、大きな保持力が発生される。 According to this embodiment, the movable member is moved in the radial direction of the second shaft by screwing the collar and the first shaft. That is, the movement of the collar in the major axis direction of the first shaft is converted into the movement of the movable member in the radial direction of the second shaft by screwing the collar and the first shaft. As a result, a large holding force is generated with respect to the holding force for holding the second shaft by the movable member.
　本発明によれば、クランプされた先端工具が駆動される作業工具に関連する改良技術が提供される。
　本発明の他の特質、作用および効果については、本明細書、特許請求の範囲、添付図面を参照することで直ちに理解可能である。 According to the present invention, an improved technique associated with a work tool in which a clamped tip tool is driven is provided.
Other features, actions, and advantages of the present invention can be readily understood with reference to the specification, claims, and accompanying drawings.
第１実施形態に係る電動式振動工具の全体構成を示す斜視図である。It is a perspective view showing the whole electric vibration tool composition concerning a 1st embodiment. 第１実施形態に係る電動式振動工具の全体構成を示す斜視図である。It is a perspective view showing the whole electric vibration tool composition concerning a 1st embodiment. 図２の部分拡大図である。FIG. 3 is a partially enlarged view of FIG. 2. 図３のIV－IV線における断面図である。FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3. 図３の部分拡大図である。FIG. 4 is a partially enlarged view of FIG. 3. 図５のVI－VI線における断面図である。FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5. 図５のVII－VII線における断面図である。FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 5. 図３のカムレバーを旋回させた状態を示す断面図である。It is sectional drawing which shows the state which turned the cam lever of FIG. クランプシャフトの保持を解除した状態を示す図である。It is a figure which shows the state which cancelled | released holding | maintenance of a clamp shaft. 図９のX－X線における断面図である。FIG. 10 is a cross-sectional view taken along line XX in FIG. 9. 図１０において、クランプ部材の移動が規制された状態を示す図である。In FIG. 10, it is a figure which shows the state by which the movement of the clamp member was controlled. 第２実施形態に係る電動式振動工具の全体構成を示す斜視図である。It is a perspective view which shows the whole structure of the electrically driven vibration tool which concerns on 2nd Embodiment. 第２実施形態に係る電動式振動工具の全体構成を示す断面図である。It is sectional drawing which shows the whole structure of the electrically driven vibration tool which concerns on 2nd Embodiment. 図１３の部分拡大図である。It is the elements on larger scale of FIG. 図１３のIV－IV線における断面図である。It is sectional drawing in the IV-IV line of FIG. 図１３のV－V線における断面図である。It is sectional drawing in the VV line | wire of FIG. 図１６のVI－VI線におけるクランプシャフト保持部材の断面図である。It is sectional drawing of the clamp shaft holding member in the VI-VI line of FIG. 図１３のレバー部を旋回軸周りに旋回させた状態を示す断面図である。FIG. 14 is a cross-sectional view showing a state where the lever portion of FIG. 13 is turned around a turning axis. 図１８のレバー部をスピンドル周りに旋回させた状態を示す断面図である。It is sectional drawing which shows the state which turned the lever part of FIG. 18 around the spindle. 電動式振動工具の上面図である。It is a top view of an electric vibration tool. 図２０のレバー部をスピンドル周りに旋回させた状態を示す上面図である。FIG. 21 is a top view showing a state where the lever portion of FIG. 20 is turned around the spindle. 第３実施形態に係る電動式振動工具の全体構成を示す断面図である。It is sectional drawing which shows the whole structure of the electrically driven vibration tool which concerns on 3rd Embodiment. 図２２の部分拡大図である。It is the elements on larger scale of FIG. 図２３の部分拡大図である。It is the elements on larger scale of FIG. クランプ部材を示す斜視図である。It is a perspective view which shows a clamp member. 図２４のXV-XV線における部分断面図である。It is a fragmentary sectional view in the XV-XV line | wire of FIG. 図２４のXVI-XVI線における部分断面図である。It is a fragmentary sectional view in the XVI-XVI line of FIG. 図２３のレバー部を旋回軸周りに旋回させた状態を示す断面図である。FIG. 24 is a cross-sectional view showing a state where the lever portion of FIG. 23 is turned around a turning axis. 図２８のレバー部をスピンドル周りに旋回させた状態を示す断面図である。It is sectional drawing which shows the state which turned the lever part of FIG. 28 around the spindle. 第４実施形態に係る電動式振動工具の部分断面図である。It is a fragmentary sectional view of the electric vibration tool concerning a 4th embodiment. 図３０のXX-XX線における断面図である。It is sectional drawing in the XX-XX line of FIG. クランプシャフト保持機構の分解斜視図である。It is a disassembled perspective view of a clamp shaft holding mechanism. 図３０においてカムレバー機構を旋回させた状態を示す断面図である。It is sectional drawing which shows the state which turned the cam lever mechanism in FIG.
　以上および以下の記載に係る構成ないし方法は、本発明にかかる作業工具の製造および使用、当該作業工具の構成要素の使用を実現せしめるべく、他の構成ないし方法と別に、あるいはこれらと組み合わせて用いることができる。本発明の代表的実施形態は、これらの組み合わせも包含し、添付図面を参照しつつ詳細に説明される。以下の詳細な説明は、本発明の好ましい適用例を実施するための詳細情報を当業者に教示するに留まり、本発明の技術的範囲は、当該詳細な説明によって制限されず、特許請求の範囲の記載に基づいて定められる。このため、以下の詳細な説明における構成や方法ステップの組み合わせは、広義の意味において、本発明を実施するのに全て必須であるというものではなく、添付図面の参照番号とともに記載された詳細な説明において、本発明の代表的形態を開示するに留まるものである。 The configurations and methods according to the above and the following description are used separately from, or in combination with, other configurations and methods in order to realize the manufacture and use of the work tool according to the present invention and the use of the components of the work tool. be able to. Exemplary embodiments of the present invention include these combinations and will be described in detail with reference to the accompanying drawings. The following detailed description is only to teach those skilled in the art with detailed information to implement preferred embodiments of the invention, and the scope of the invention is not limited by the detailed description, but is limited by the scope of the claims. It is determined based on the description. For this reason, combinations of configurations and method steps in the following detailed description are not all essential to implement the present invention in a broad sense, but are described in detail with reference numerals in the accompanying drawings. However, only representative embodiments of the present invention are disclosed.
（第１実施形態）
　以下、第１実施形態について、図１～図１１を参照して詳細に説明する。本実施形態は、作業工具として、電動式振動工具に本発明を適用した例である。 (First embodiment)
Hereinafter, the first embodiment will be described in detail with reference to FIGS. The present embodiment is an example in which the present invention is applied to an electric vibration tool as a work tool.
　図１に示すように、電動式振動工具１００は、例えば、ブレードや研磨パッド等の複数種類の工具を選択的に装着し、装着された工具を振動させて、被加工材に対して工具の種類に応じた切断や研磨などの加工を行う作業工具である。本実施形態では、工具の一例としてブレード２００を用いて説明する。なお、ブレード２００等の工具が、本発明における「先端工具」に対応する実施構成例である。 As shown in FIG. 1, the electric vibration tool 100 selectively attaches a plurality of types of tools such as a blade and a polishing pad, and vibrates the attached tool so that the tool is applied to a workpiece. It is a work tool that performs processing such as cutting and polishing according to the type. In the present embodiment, description will be made using a blade 200 as an example of a tool. The tool such as the blade 200 is an implementation configuration example corresponding to the “tip tool” in the present invention.
　図１、図２に示すように、電動式振動工具１００は、駆動機構１０２と回転制御機構１０４が収容された本体ハウジング１０１とブレード２００を保持するための工具保持機構１０３を主体として構成されている。 As shown in FIGS. 1 and 2, the electric vibration tool 100 is mainly configured by a main body housing 101 in which a drive mechanism 102 and a rotation control mechanism 104 are housed, and a tool holding mechanism 103 for holding a blade 200. Yes.
　図３、図４に示すように、駆動機構１０２は、モータ１１０、偏心軸１１２、ベアリング１１３、被駆動アーム１１４、スピンドル接続部１１５等を主体として構成されている。偏心軸１１２は、モータ１１０の出力軸１１１の先端であって、出力軸１１１の回転軸に対して偏心した位置に、回転軸と平行な方向に延在して配置されている。ベアリング１１３は、偏心軸１１２の外側に取り付けられている。被駆動アーム１１４は、図４に示すように、スピンドル接続部１１５からモータ１１０に向けて延在する２本のアーム部１１４ａで構成されている。そして、被駆動アーム１１４は、２本のアーム部１１４ａがベアリング１１３の外側の対向する２箇所において、ベアリング１１３に当接するように配置されている。 As shown in FIGS. 3 and 4, the driving mechanism 102 is mainly composed of a motor 110, an eccentric shaft 112, a bearing 113, a driven arm 114, a spindle connecting portion 115, and the like. The eccentric shaft 112 is disposed at the tip of the output shaft 111 of the motor 110 and at a position eccentric to the rotation shaft of the output shaft 111 so as to extend in a direction parallel to the rotation shaft. The bearing 113 is attached to the outside of the eccentric shaft 112. As shown in FIG. 4, the driven arm 114 is composed of two arm portions 114 a extending from the spindle connection portion 115 toward the motor 110. The driven arm 114 is disposed so that the two arm portions 114 a come into contact with the bearing 113 at two opposite positions outside the bearing 113.
　図３に示すように、工具保持機構１０３は、ブレード２００を保持するとともに、モータ１１０の出力をブレード２００に伝達させてブレード２００を振動させる機構である。この工具保持機構１０３は、スピンドル１２０、クランプシャフト１２３、クランプシャフト保持機構１３０を主体として構成されている。 As shown in FIG. 3, the tool holding mechanism 103 is a mechanism that holds the blade 200 and transmits the output of the motor 110 to the blade 200 to vibrate the blade 200. The tool holding mechanism 103 is mainly composed of a spindle 120, a clamp shaft 123, and a clamp shaft holding mechanism 130.
　スピンドル１２０は、中空の円筒状部材であり、モータ１１０の出力軸１１１に対して交差する方向に長軸方向が延在するように配置されている。中空部分は、段付き状に形成されており、スピンドル１２０の内側には、第１段付面１２０ａ、第２段付面１２０ｂが形成されている。スピンドル１２０は、長軸方向の２箇所において、長軸方向周りに回転可能にベアリング１２５，１２６を介して、本体ハウジング１０１に支持されている。本体ハウジング１０１の外側におけるスピンドル１２０の先端部には、ガイド部材１２１が取り付けられている。また、スピンドル１２０の内側には、螺合部材１３１と螺合するネジ山１２０ｃが形成されている。 The spindle 120 is a hollow cylindrical member and is arranged so that the major axis direction extends in a direction intersecting the output shaft 111 of the motor 110. The hollow portion is formed in a stepped shape, and a first stepped surface 120 a and a second stepped surface 120 b are formed inside the spindle 120. The spindle 120 is supported by the main body housing 101 via bearings 125 and 126 so as to be rotatable around the long axis direction at two locations in the long axis direction. A guide member 121 is attached to the tip of the spindle 120 outside the main body housing 101. Further, a screw thread 120 c that is screwed with the screwing member 131 is formed inside the spindle 120.
　図５に示すように、ガイド部材１２１は、スピンドル１２０の外側に係合して固定される略円筒状の部材である。ガイド部材１２１は、ガイド穴１２１ａとガイド穴１２１ａに沿って形成された内側突出部１２１ｂと外側突出部１２１ｃを有している。内側突出部１２１ｂは、スピンドル１２０の内側に配置され、外側突出部１２１ｃは、スピンドル１２０の外側に配置されている。また、外側突出部１２１ｃには、円盤状のフランジ１２２が取り付けられている。 As shown in FIG. 5, the guide member 121 is a substantially cylindrical member that is engaged and fixed to the outside of the spindle 120. The guide member 121 has a guide hole 121a, an inner protrusion 121b and an outer protrusion 121c formed along the guide hole 121a. The inner protrusion 121 b is disposed inside the spindle 120, and the outer protrusion 121 c is disposed outside the spindle 120. In addition, a disc-shaped flange 122 is attached to the outer protruding portion 121c.
　クランプシャフト１２３は、略円柱状のシャフトの一方の端部に一体に形成されたクランプヘッド１２４を有している。クランプシャフト１２３は、ガイド部材１２１のガイド穴１２１ａを通過して、スピンドル１２０の内側に挿入可能であり、スピンドル１２０に対して着脱可能に構成されている。なお、クランプシャフト１２３の他方の端部は、球面状に形成されている。 The clamp shaft 123 has a clamp head 124 integrally formed at one end of a substantially cylindrical shaft. The clamp shaft 123 can be inserted into the spindle 120 through the guide hole 121a of the guide member 121 and is detachable from the spindle 120. The other end of the clamp shaft 123 is formed in a spherical shape.
　そして、工具保持機構１０３は、フランジ１２２とクランプヘッド１２４の間にブレード２００を挟持可能に構成されている。このスピンドル１２０、クランプシャフト１２３がそれぞれ、本発明における「第１シャフト」、「第２シャフト」に対応する実施構成例である。また、フランジ１２２、クランプヘッド１２４がそれぞれ、本発明における「第１クランプ部」、「第２クランプ部」に対応する実施構成例である。 The tool holding mechanism 103 is configured to be able to hold the blade 200 between the flange 122 and the clamp head 124. The spindle 120 and the clamp shaft 123 are implementation configuration examples corresponding to the “first shaft” and the “second shaft” in the present invention, respectively. Further, the flange 122 and the clamp head 124 are implementation configuration examples corresponding to the “first clamp portion” and the “second clamp portion” in the present invention, respectively.
　図５に示すように、クランプシャフト保持機構１３０は、クランプシャフト１２３を保持する機構である。このクランプシャフト保持機構１３０は、螺合部材１３１、クランプ部材１３２、回転力伝達部材１３３を主体として構成されている。 As shown in FIG. 5, the clamp shaft holding mechanism 130 is a mechanism that holds the clamp shaft 123. The clamp shaft holding mechanism 130 is mainly composed of a screw member 131, a clamp member 132, and a rotational force transmission member 133.
　図５、図６に示すように、螺合部材１３１は、略円筒状の部材であり、スピンドル１２０の内側に配置されている。螺合部材１３１の外周面には、スピンドル１２０のネジ山１２０ｃと螺合するネジ山１３１ａが形成されている。これにより、螺合部材１３１がスピンドル１２０と螺合して回転することで、螺合部材１３１がスピンドル１２０の長軸方向に移動可能に構成されている。この螺合部材１３１が、本発明における「カラー」に対応する実施構成例である。 As shown in FIGS. 5 and 6, the screwing member 131 is a substantially cylindrical member, and is disposed inside the spindle 120. On the outer peripheral surface of the screw member 131, a screw thread 131a that is screwed with the screw thread 120c of the spindle 120 is formed. Accordingly, the screwing member 131 is configured to be movable in the long axis direction of the spindle 120 by being screwed with the spindle 120 and rotating. This screwing member 131 is an implementation configuration example corresponding to the “color” in the present invention.
　図６に示すように、螺合部材１３１の中心領域には、クランプシャフト１２３が挿入されるクランプシャフト挿入穴１３４が形成されている。さらに、螺合部材１３１は、クランプシャフト挿入穴１３４に連接するクランプ部材保持部１３５を有している。当該クランプ部材保持部１３５は、クランプシャフト挿入穴１３４に対して凹状に形成されている。このクランプ部材保持部１３５には、クランプ部材１３２の凸部１３２ｂと係合可能な２つの係合凹部１３５ａが設けられている。さらに、図５に示すように、クランプ部材保持部１３５には、スピンドル１２０の長軸方向に対して傾斜した傾斜面１３５ｂが形成されている。また、図６に示すように、螺合部材１３１の外周面には、回転力伝達部材１３３の係合凸部１３３ｃと係合可能な係合凹部１３６が形成されている。このクランプシャフト挿入穴１３４が、本発明における「穴部」に対応する実施構成例である。 As shown in FIG. 6, a clamp shaft insertion hole 134 into which the clamp shaft 123 is inserted is formed in the central region of the screwing member 131. Furthermore, the screwing member 131 has a clamp member holding portion 135 connected to the clamp shaft insertion hole 134. The clamp member holding portion 135 is formed in a concave shape with respect to the clamp shaft insertion hole 134. The clamp member holding portion 135 is provided with two engagement concave portions 135a that can be engaged with the convex portions 132b of the clamp member 132. Further, as shown in FIG. 5, the clamp member holding portion 135 is formed with an inclined surface 135 b inclined with respect to the major axis direction of the spindle 120. As shown in FIG. 6, an engagement recess 136 that can engage with the engagement protrusion 133 c of the rotational force transmission member 133 is formed on the outer peripheral surface of the screwing member 131. This clamp shaft insertion hole 134 is an implementation configuration example corresponding to the “hole” in the present invention.
　図５に示すように、クランプ部材１３２は、略楔形状の部材である。このクランプ部材１３２は、クランプ部材保持部１３５に配置され、螺合部材１３１と協働してクランプシャフト１２３を保持するように構成されている。クランプ部材１３２には、螺合部材１３１の傾斜面１３５ｂと係合可能な傾斜面１３２ａが形成されている。また、図６に示すように、螺合部材１３１の係合凹部１３５ａと係合可能な２つの凸部１３２ｂが設けられている。 As shown in FIG. 5, the clamp member 132 is a substantially wedge-shaped member. The clamp member 132 is disposed in the clamp member holding portion 135 and configured to hold the clamp shaft 123 in cooperation with the screwing member 131. The clamp member 132 is formed with an inclined surface 132 a that can be engaged with the inclined surface 135 b of the screwing member 131. Further, as shown in FIG. 6, two convex portions 132 b that can be engaged with the engaging concave portions 135 a of the screwing member 131 are provided.
　図５に示すように、回転力伝達部材１３３は、スラストピン１４０の回転を螺合部材１３１に伝達することで、螺合部材１３１をスピンドル１２０に対して回転させる部材である。回転力伝達部材１３３は、略円盤状に形成された本体部１３３ａを有している。図７に示すように、本体部１３３ａには、スラストピン１４０の係合部１４１が係合する略長方形状の係合穴１３３ｂが形成されている。また、図６に示すように、回転力伝達部材１３３は、螺合部材１３１の係合凹部１３６に係合可能な２つの凸部１３３ｃが、本体部１３３ａから突出して形成されている。 As shown in FIG. 5, the rotational force transmission member 133 is a member that rotates the screwing member 131 relative to the spindle 120 by transmitting the rotation of the thrust pin 140 to the screwing member 131. The rotational force transmission member 133 has a main body portion 133a formed in a substantially disc shape. As shown in FIG. 7, the main body 133a is formed with a substantially rectangular engagement hole 133b with which the engagement portion 141 of the thrust pin 140 is engaged. As shown in FIG. 6, the rotational force transmitting member 133 is formed with two convex portions 133c that can be engaged with the engaging concave portion 136 of the screwing member 131 protruding from the main body portion 133a.
　以上の通り構成されたクランプシャフト保持機構１３０においては、スラストピン１４０によって回転力伝達部材１３３が回転されることで、螺合部材１３１が回転される。これにより、螺合部材１３１は、スピンドル１２０の長軸方向へ相対移動される。螺合部材１３１の移動に伴って、クランプ部材保持部１３５の傾斜面１３５ａとクランプ部材１３２の傾斜面１３２ａが係合し、これにより、螺合部材１３１のスピンドル１２０の長軸方向への移動が、クランプ部材１３２のスピンドル１２０の径方向への移動に変換される。すなわち、クランプ部材１３２がスピンドル１２０の径方向に移動し、スピンドル１２０に挿入されたクランプシャフト１２３が保持される。このクランプ部材１３２が、本発明における「保持部材」に対応する実施構成例である。また、回転力伝達部材１３３が、本発明における「回転伝達部材」に対応する実施構成例である。また、クランプ部材保持部１３５が、本発明における「凹部」に対応する実施構成例である。 In the clamp shaft holding mechanism 130 configured as described above, the screw member 131 is rotated when the rotational force transmission member 133 is rotated by the thrust pin 140. Thereby, the screwing member 131 is relatively moved in the long axis direction of the spindle 120. With the movement of the screwing member 131, the inclined surface 135a of the clamp member holding portion 135 and the inclined surface 132a of the clamp member 132 are engaged, whereby the screwing member 131 moves in the major axis direction of the spindle 120. The clamp member 132 is converted into the movement of the spindle 120 in the radial direction. That is, the clamp member 132 moves in the radial direction of the spindle 120 and the clamp shaft 123 inserted into the spindle 120 is held. This clamp member 132 is an implementation structural example corresponding to the "holding member" in this invention. Moreover, the rotational force transmission member 133 is an implementation structural example corresponding to the "rotation transmission member" in this invention. Moreover, the clamp member holding | maintenance part 135 is the implementation structural example corresponding to the "recessed part" in this invention.
　次に、クランプシャフト保持機構１３０を動作させる、回転制御機構１０４について説明する。図３に示すように、回転制御機構１０４は、スラストピン１４０、コイルバネ１４３、カムレバー機構１５０を主体として構成されている。この回転制御機構１０４を構成する部材が、本発明における「操作部材」に対応する実施構成例である。 Next, the rotation control mechanism 104 that operates the clamp shaft holding mechanism 130 will be described. As shown in FIG. 3, the rotation control mechanism 104 is mainly composed of a thrust pin 140, a coil spring 143, and a cam lever mechanism 150. The members constituting the rotation control mechanism 104 are an implementation configuration example corresponding to the “operation member” in the present invention.
　スラストピン１４０は、略円柱状の部材で、スピンドル１２０の内側に、スピンドル１２０の長軸方向に摺動可能に配置されている。スラストピン１４０の先端部には、回転力伝達部材１３３の係合穴１３３ｂと係合する係合部１４１が形成されている。また、係合部１４１には、バネ受け部１４２がスラストピン１４０の径方向に突出して形成されている。すなわち、バネ受け部１４２の外径がスピンドル１２０の内径とほぼ同じ大きさに形成されている。これにより、スラストピン１４０がスムーズにスピンドル１２０内を摺動する。 The thrust pin 140 is a substantially cylindrical member, and is disposed inside the spindle 120 so as to be slidable in the long axis direction of the spindle 120. An engagement portion 141 that engages with the engagement hole 133 b of the rotational force transmission member 133 is formed at the tip of the thrust pin 140. The engaging portion 141 is formed with a spring receiving portion 142 protruding in the radial direction of the thrust pin 140. That is, the outer diameter of the spring receiving portion 142 is formed to be approximately the same as the inner diameter of the spindle 120. Thereby, the thrust pin 140 slides in the spindle 120 smoothly.
　コイルバネ１４３は、バネ受け部１４２とスピンドル１２０の第１段付面１２０ａに当接して配置されている。このコイルバネ１４３は、スピンドル１２０の長軸方向に伸縮可能であり、スラストピン１４０を回転力伝達部材１３３に向けて付勢するように収縮した状態で保持されている。 The coil spring 143 is disposed in contact with the spring receiving portion 142 and the first stepped surface 120a of the spindle 120. The coil spring 143 can extend and contract in the major axis direction of the spindle 120 and is held in a contracted state so as to urge the thrust pin 140 toward the rotational force transmitting member 133.
　スラストピン１４０には、係合部１４１が形成された端部と反対側の端部に、カムレバー機構１５０が連接されている。カムレバー機構１５０は、スラストピン１４０を長軸方向に摺動させるとともに、スラストピン１４０をスピンドル１２０に対して回転させる部材である。図３に示すように、カムレバー機構１５０は、レバー部１５１、偏心部１５２、旋回軸１５３、旋回部材１５４を主体として構成されている。 The cam lever mechanism 150 is connected to the thrust pin 140 at the end opposite to the end where the engagement portion 141 is formed. The cam lever mechanism 150 is a member that slides the thrust pin 140 in the major axis direction and rotates the thrust pin 140 with respect to the spindle 120. As shown in FIG. 3, the cam lever mechanism 150 is mainly composed of a lever portion 151, an eccentric portion 152, a turning shaft 153, and a turning member 154.
　このカムレバー機構１５０においては、レバー部１５１が旋回軸１５３回りに旋回可能に設けられている。さらに、カムレバー機構１５０は、スピンドル１２０の長軸周りに旋回可能に構成されている。 In this cam lever mechanism 150, a lever portion 151 is provided so as to be capable of turning around a turning shaft 153. Further, the cam lever mechanism 150 is configured to be rotatable around the long axis of the spindle 120.
　図３に示すように、レバー部１５１は、偏心部１５２に連接されている。偏心部１５２には、旋回軸１５３が貫通する穴が形成されている。旋回軸１５３は、偏心部１５２に挿通され、旋回部材１５４に対してスピンドル１２０の長軸方向に相対移動可能に保持されている。これにより、偏心部１５２およびレバー部１５１が、旋回軸１５３回りに旋回可能に保持される。なお、図８に示すように、レバー部１５１は、ユーザに保持される偏平状の把持部１５１ａを有している。 As shown in FIG. 3, the lever portion 151 is connected to the eccentric portion 152. A hole through which the turning shaft 153 passes is formed in the eccentric portion 152. The pivot shaft 153 is inserted through the eccentric portion 152 and is held so as to be relatively movable in the major axis direction of the spindle 120 with respect to the pivot member 154. Thereby, the eccentric part 152 and the lever part 151 are hold | maintained so that turning around the turning shaft 153 is possible. In addition, as shown in FIG. 8, the lever part 151 has the flat holding | grip part 151a hold | maintained by a user.
　偏心部１５２の中心位置は、旋回軸１５３の軸中心に対して偏心して配置されている。これにより、偏心部１５２の外周の各箇所において、旋回軸１５３の軸中心からの距離が異なるように構成されている。 The center position of the eccentric part 152 is arranged eccentrically with respect to the axis center of the turning shaft 153. Accordingly, the distance from the center of the turning shaft 153 is different at each position on the outer periphery of the eccentric portion 152.
　旋回部材１５４は、Ｏリング１５５を介してスピンドル１２０の長軸周りに旋回可能に本体ハウジング１０１に取り付けられている。旋回部材１５４が、スピンドル１２０の長軸周りに旋回することで、レバー部１５１がスピンドル１２０の長軸周りに旋回される。 The turning member 154 is attached to the main body housing 101 through the O-ring 155 so as to be turnable around the long axis of the spindle 120. The pivot member 154 pivots around the major axis of the spindle 120, so that the lever portion 151 pivots around the major axis of the spindle 120.
　以上の通り構成された回転制御機構１０４は、偏心部１５２が旋回軸１５３に対して偏心して形成されているため、レバー部１５１を旋回軸１５３に対して旋回させると、旋回軸１５３がスピンドル１２０の長軸方向に移動する。これにより、スラストピン１４０を長軸方向に移動される。さらに、レバー部１５１を旋回部材１５４と一体にスピンドル１２０の長軸周りに旋回させることで、スラストピン１４０を長軸周りに回転させることができる。これにより、スラストピン１４０の係合部１４１と回転力伝達部材１３３の係合穴１３３ｂの向きを一致させることができる。係合部１４１と係合穴１３３ｂの位置が一致すると、コイルバネ１４３の付勢力によって、図８に示すように、係合部１４１が係合穴１３３ｂに係合する。 In the rotation control mechanism 104 configured as described above, since the eccentric portion 152 is formed eccentrically with respect to the turning shaft 153, when the lever portion 151 is turned with respect to the turning shaft 153, the turning shaft 153 is turned into the spindle 120. Move in the long axis direction. Thereby, the thrust pin 140 is moved in the major axis direction. Furthermore, the thrust pin 140 can be rotated around the major axis by pivoting the lever portion 151 around the major axis of the spindle 120 together with the pivoting member 154. Thereby, the direction of the engagement part 141 of the thrust pin 140 and the engagement hole 133b of the rotational force transmission member 133 can be made to correspond. When the positions of the engaging portion 141 and the engaging hole 133b coincide with each other, the urging force of the coil spring 143 causes the engaging portion 141 to engage with the engaging hole 133b as shown in FIG.
　図８に示すように、係合部１４１と係合穴１３３ｂが係合した状態で、レバー部１５１をスピンドル１２０の長軸周りに回転させることで、回転力伝達部材１３３をスピンドル１２０の長軸周りに回転させることができる。回転力伝達部材１３３の回転により、回転力伝達部材１３３の凸部１３３ｃが、螺合部材１３１をスピンドル１２０の長軸周りに回転させる。これにより、螺合部材１３１がスピンドル１２０に対して相対回転して、スピンドル１２０の長軸方向に移動する。 As shown in FIG. 8, the lever 151 is rotated around the long axis of the spindle 120 in a state where the engaging portion 141 and the engaging hole 133b are engaged, whereby the rotational force transmitting member 133 is moved to the long axis of the spindle 120. Can be rotated around. Due to the rotation of the rotational force transmitting member 133, the convex portion 133 c of the rotational force transmitting member 133 rotates the screwing member 131 around the long axis of the spindle 120. As a result, the screwing member 131 rotates relative to the spindle 120 and moves in the long axis direction of the spindle 120.
　螺合部材１３１が、スピンドル１２０の長軸方向における、カムレバー機構１５０が配置された側（上方向）に移動することで、クランプシャフト挿入穴１３４に挿入されたクランプシャフト１２３をクランプ部材１３２で保持する。すなわち、螺合部材１３１が上方向に移動すると、クランプ部材保持部１３５に保持されたクランプ部材１３２も上方向に移動する。回転力伝達部材１３３が第２段付面１２０ｂに当接し、さらにクランプ部材１３２が回転力伝達部材１３３に当接すると、クランプ部材１３２は、回転力伝達部材１３３と螺合部材１３１に挟持されて、クランプ部材１３２の上方向への移動が規制される。そして、螺合部材１３１をさらに上方向に移動させると、傾斜面１３２ａと傾斜面１３５ｂによってクランプ部材１３２の移動方向が変換されて、クランプ部材１３２がスピンドル１２０の中心に向かう径方向に移動される。これにより、クランプシャフト１２３が、クランプ部材１３２と螺合部材１３１との間に保持される。その結果、フランジ１２２とクランプヘッド１２４の間に配置されたブレード２００が、フランジ１２２とクランプヘッド１２４の間に挟持される。 The clamp shaft 123 inserted into the clamp shaft insertion hole 134 is held by the clamp member 132 by the screw member 131 moving in the longitudinal direction of the spindle 120 toward the side where the cam lever mechanism 150 is disposed (upward). To do. That is, when the screwing member 131 moves upward, the clamp member 132 held by the clamp member holding portion 135 also moves upward. When the rotational force transmission member 133 comes into contact with the second stepped surface 120 b and the clamp member 132 comes into contact with the rotational force transmission member 133, the clamp member 132 is sandwiched between the rotational force transmission member 133 and the screwing member 131. The upward movement of the clamp member 132 is restricted. When the screwing member 131 is further moved upward, the moving direction of the clamp member 132 is converted by the inclined surface 132a and the inclined surface 135b, and the clamp member 132 is moved in the radial direction toward the center of the spindle 120. . As a result, the clamp shaft 123 is held between the clamp member 132 and the screwing member 131. As a result, the blade 200 disposed between the flange 122 and the clamp head 124 is sandwiched between the flange 122 and the clamp head 124.
　一方で、レバー部１５１を回転させて、螺合部材１３１がスピンドル１２０の長軸方向におけるフランジ１２２が配置された側（下方向）に移動されると、クランプ部材１３２によるクランプシャフト１２３のクランプが解除される。すなわち、図９に示すように、スラストピン１４０に回転されて螺合部材１３１が下方向に移動すると、クランプ部材１３２はガイド部材１２１の内側突出部１２１ｂに当接して、下方向へのクランプ部材１３２の移動が規制される。そして、螺合部材１３１をさらに下方向に移動させると、傾斜面１３２ａと傾斜面１３５ｂの係合が解除される。すなわち、図１０に示すように、クランプ部材１３２がスピンドル１２０の外側へ向かう径方向への移動が許容される。これにより、クランプ部材１３２によるクランプシャフト１２３の保持が解除され、図９に示すように、クランプシャフト１２３を取り外すことができる。クランプシャフト１２３を取り外すことで、フランジ１２２とクランプヘッド１２４に挟持されたブレード２００を交換することができる。この内側突出部１２１ｂが、本発明における「移動規制部材」に対応する実施構成例である。 On the other hand, when the lever portion 151 is rotated and the screwing member 131 is moved to the side (downward) where the flange 122 is arranged in the longitudinal direction of the spindle 120, the clamp shaft 123 is clamped by the clamp member 132. Canceled. That is, as shown in FIG. 9, when the screw member 131 moves downward by being rotated by the thrust pin 140, the clamp member 132 comes into contact with the inner protrusion 121 b of the guide member 121, and the downward clamp member The movement of 132 is restricted. When the screwing member 131 is further moved downward, the engagement between the inclined surface 132a and the inclined surface 135b is released. That is, as shown in FIG. 10, the clamp member 132 is allowed to move in the radial direction toward the outside of the spindle 120. Thereby, holding | maintenance of the clamp shaft 123 by the clamp member 132 is cancelled | released, and as shown in FIG. 9, the clamp shaft 123 can be removed. By removing the clamp shaft 123, the blade 200 sandwiched between the flange 122 and the clamp head 124 can be replaced. This inner protrusion 121b is an implementation configuration example corresponding to the “movement restricting member” in the present invention.
　なお、クランプシャフト１２３を取り外した場合においては、図１１に示すように、クランプ部材１３２の凸部１３２ｂが、クランプ部材保持部１３５の係合凹部１３５ａに係合して、螺合部材１３１のクランプシャフト挿入穴１３４からクランプ部材１３２が脱落することを防止している。この係合凹部１３５ａが、本発明における「規制部」に対応する実施構成例である。 When the clamp shaft 123 is removed, the projection 132b of the clamp member 132 is engaged with the engagement recess 135a of the clamp member holding portion 135 as shown in FIG. The clamp member 132 is prevented from falling off from the shaft insertion hole 134. The engaging recess 135a is an implementation configuration example corresponding to the “regulating portion” in the present invention.
　以上の通り構成された電動式振動工具１００は、モータ１１０が通電駆動されると、図４に示すように、出力軸１１１の回転運動は、偏心軸１１２およびベアリング１１３によって、矢印Ａで示される方向（以下、Ａ方向）への往復運動に変換される。Ａ方向への往復運動は、被駆動アーム１１４に伝達されて、スピンドル接続部１１５を中心とした矢印Ｂで示されるスピンドル１２０周りの円周方向（以下、Ｂ方向）への所定の角度をなす回転運動に変換される。これにより、スピンドル接続部１１５に接続されたスピンドル１２０がＢ方向に往復駆動される。その結果、フランジ１２２とクランプヘッド１２４で挟持されたブレード２００を振動させて、被加工材に対して切断等の加工を遂行する。 In the electric vibrating tool 100 configured as described above, when the motor 110 is energized and driven, the rotational movement of the output shaft 111 is indicated by the arrow A by the eccentric shaft 112 and the bearing 113 as shown in FIG. It is converted into a reciprocating motion in a direction (hereinafter referred to as A direction). The reciprocating motion in the A direction is transmitted to the driven arm 114 and forms a predetermined angle in the circumferential direction around the spindle 120 (hereinafter referred to as the B direction) indicated by the arrow B around the spindle connecting portion 115. Converted to rotational motion. As a result, the spindle 120 connected to the spindle connecting portion 115 is driven to reciprocate in the B direction. As a result, the blade 200 sandwiched between the flange 122 and the clamp head 124 is vibrated to perform processing such as cutting on the workpiece.
　以上の第１実施形態によれば、螺合部材１３１とスピンドル１２０が螺合して、螺合部材１３１がスピンドル１２０の長軸方向に移動することによって、クランプ部材１３２がスピンドル１２０の径方向に移動される。これにより、スピンドル１２０内に配置されたクランプシャフト１２３をクランプ部材１３２と螺合部材１３１が保持する。したがって、螺合部材１３１のスピンドル１２０の長軸方向への移動をクランプ部材１３２のクランプシャフト１２３の径方向への移動に変換することができる。すなわち、螺合部材１３１が螺合して移動することによって、クランプ部材１３２がクランプシャフト１２３を保持するための保持力がクランプ部材１３２と螺合部材１３１の間に発生する。これにより、クランプ部材１３２にバネ等によって直接クランプ力を与えるような構成に比べて、クランプシャフト１２３を大きな保持力で保持することができる。 According to the first embodiment described above, the screw member 131 and the spindle 120 are screwed together, and the screw member 131 moves in the longitudinal direction of the spindle 120, so that the clamp member 132 moves in the radial direction of the spindle 120. Moved. As a result, the clamp shaft 123 arranged in the spindle 120 is held by the clamp member 132 and the screwing member 131. Therefore, the movement of the screw member 131 in the major axis direction of the spindle 120 can be converted into the movement of the clamp member 132 in the radial direction of the clamp shaft 123. That is, when the screwing member 131 is screwed and moved, a holding force for the clamp member 132 to hold the clamp shaft 123 is generated between the clamp member 132 and the screwing member 131. Thereby, the clamp shaft 123 can be held with a large holding force as compared with a configuration in which a clamping force is directly applied to the clamping member 132 by a spring or the like.
　また、第１実施形態によれば、ガイド部材１２１のガイド穴１２１ａが挿入されるクランプシャフト１２３をガイドしている。さらに、内側突出部１２１ｂが、クランプ部材１３２の保持を解除する際のクランプ部材１３２の移動を規制する。さらに、外側突出部１２１ｃが、フランジ１２２を保持する。したがって、ガイド部材１２１が複数の機能を有する構成であるため、電動式振動工具１００の部品点数を減らすことができる。 Further, according to the first embodiment, the clamp shaft 123 into which the guide hole 121a of the guide member 121 is inserted is guided. Furthermore, the inner protrusion 121b regulates the movement of the clamp member 132 when releasing the holding of the clamp member 132. Further, the outer protrusion 121 c holds the flange 122. Accordingly, since the guide member 121 has a plurality of functions, the number of parts of the electric vibration tool 100 can be reduced.
　また、第１実施形態によれば、回転力伝達部材１３３は、スラストピン１４０の回転を螺合部材１３１に伝達している。さらに、クランプシャフト１２３を保持する際に、回転力伝達部材１３３がスピンドル１２０の長軸方向におけるクランプ部材１３２の移動を規制する。これにより、クランプ部材１３２をクランプシャフト１２３に向かう方向に移動させている。すなわち、回転力伝達部材１３３が複数の機能を有する構成であるため、電動式振動工具１００の部品点数を減らすことができる。 Further, according to the first embodiment, the rotational force transmission member 133 transmits the rotation of the thrust pin 140 to the screwing member 131. Furthermore, when the clamp shaft 123 is held, the rotational force transmission member 133 restricts the movement of the clamp member 132 in the major axis direction of the spindle 120. Thereby, the clamp member 132 is moved in the direction toward the clamp shaft 123. That is, since the rotational force transmission member 133 has a plurality of functions, the number of parts of the electric vibration tool 100 can be reduced.
　また、第１実施形態によれば、カムレバー機構１５０は、レバー部１５１を旋回軸１５３に対して旋回させることで、スラストピン１４０を長軸方向に移動させることができる。また、カムレバー機構１５０は、スピンドル１２０の長軸周りに旋回させることができる。これにより、スラストピン１４０を回転力伝達部材１３２に容易に係合させることができる。 Further, according to the first embodiment, the cam lever mechanism 150 can move the thrust pin 140 in the long axis direction by turning the lever portion 151 with respect to the turning shaft 153. Further, the cam lever mechanism 150 can be turned around the long axis of the spindle 120. Thereby, the thrust pin 140 can be easily engaged with the rotational force transmission member 132.
　また、第１実施形態によれば、クランプ部材１３２の凸部１３２ｂが、クランプ部材保持部１３５の係合凹部１３５ａに係合するため、クランプシャフト挿入穴１３４へのクランプ部材１３２の脱落が規制される。また、クランプシャフト１２３の先端部は、球面状に形成されているため、クランプ部材１３２がクランプシャフト挿入穴１３４に張り出している場合であっても、クランプシャフト１２３をクランプシャフト挿入穴１３４に挿入することができる。 Further, according to the first embodiment, since the convex portion 132b of the clamp member 132 engages with the engagement concave portion 135a of the clamp member holding portion 135, dropping of the clamp member 132 into the clamp shaft insertion hole 134 is restricted. The Further, since the tip end portion of the clamp shaft 123 is formed in a spherical shape, the clamp shaft 123 is inserted into the clamp shaft insertion hole 134 even when the clamp member 132 protrudes into the clamp shaft insertion hole 134. be able to.
　以上の第１実施形態においては、螺合部材１３１には、クランプシャフト挿入穴１３４が形成されていたが、これには限られない。螺合部材１３１は、スピンドル１２０の長軸方向に移動することで、クランプ部材１３２をスピンドル１２０の径方向に移動させるように構成していれば、クランプシャフト１２３は、クランプ部材１３２と螺合部材１３１の間に保持されていなくても、クランプ部材１３２とスピンドル１２０の間にクランプシャフト１２３を保持することも可能である。 In the first embodiment described above, the screw shaft 131 is formed with the clamp shaft insertion hole 134 in the screwing member 131, but is not limited thereto. If the screw member 131 is configured to move the clamp member 132 in the radial direction of the spindle 120 by moving in the long axis direction of the spindle 120, the clamp shaft 123 is connected to the clamp member 132 and the screw member. Even if the clamp shaft 123 is not held between the clamp member 132 and the spindle 120, the clamp shaft 123 can be held.
　さらに、螺合部材１３１は、クランプ部材１３２と係合する係合凹部１３５ａ、傾斜面１３５ｂがスピンドル１２０内部に配置されていれば、螺合部材１３１は、スピンドル１２０の外側に螺合される構成であってもよい。 Furthermore, the screwing member 131 is configured such that the screwing member 131 is screwed to the outside of the spindle 120 if the engaging recess 135a and the inclined surface 135b that engage with the clamp member 132 are disposed inside the spindle 120. It may be.
（第２実施形態）
　次に第２実施形態について、図１２～図２１を参照して詳細に説明する。なお、第１実施形態と同様の構成については、同じ符号を付して説明を省略する。 (Second Embodiment)
Next, a second embodiment will be described in detail with reference to FIGS. In addition, about the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.
　図１２、図１３に示すように、電動式振動工具１００は、駆動機構１０２と回転制御機構１０４が収容された本体ハウジング１０１とブレード２００を保持するための工具保持機構１０３を主体として構成されている。図１５，図１６に示すように、第２実施形態における工具保持機構１０３は、スピンドル１２０、クランプシャフト１１２３、クランプシャフト保持機構１１３０を主体として構成されている。 As shown in FIGS. 12 and 13, the electric vibration tool 100 is mainly configured by a main body housing 101 in which a drive mechanism 102 and a rotation control mechanism 104 are housed, and a tool holding mechanism 103 for holding the blade 200. Yes. As shown in FIGS. 15 and 16, the tool holding mechanism 103 in the second embodiment is mainly configured by a spindle 120, a clamp shaft 1123, and a clamp shaft holding mechanism 1130.
　図１４に示すように、第２実施形態におけるスピンドル１２０およびガイド部材１２１は、第１実施形態と概ね同様であるが、第１実施形態と異なりスピンドル１２０の内側にはネジ山１２０ｃが形成されておらず、またガイド部材１２１の内側突出部１２１ｂが形成されていない。このスピンドル１２０が、本発明における「第１シャフト」に対応する実施構成例である。 As shown in FIG. 14, the spindle 120 and the guide member 121 in the second embodiment are substantially the same as those in the first embodiment, but unlike the first embodiment, a screw thread 120 c is formed inside the spindle 120. Further, the inner protrusion 121b of the guide member 121 is not formed. The spindle 120 is an implementation configuration example corresponding to the “first shaft” in the present invention.
　クランプシャフト１１２３は、略円柱状の部材であり、一方の端部に一体に形成されたクランプヘッド１１２４を有しており、他方の端部側にねじ部１１２５を有している。ねじ部１１２５には、雄ねじが形成されている。このクランプシャフト１１２３が、本発明における「第２シャフト」に対応する実施構成例である。 The clamp shaft 1123 is a substantially columnar member, has a clamp head 1124 formed integrally at one end, and has a threaded portion 1125 at the other end. The screw portion 1125 is formed with a male screw. This clamp shaft 1123 is an implementation structural example corresponding to the "second shaft" in the present invention.
　以上の通り構成されたスピンドル１２０、ガイド部材１２１、フランジ１２２およびクランプシャフト１１２３は、クランプヘッド１１２４と、クランプヘッド１１２４に対向するフランジ１２２との間にブレード２００を挟持可能に構成されている。 The spindle 120, the guide member 121, the flange 122, and the clamp shaft 1123 configured as described above are configured such that the blade 200 can be sandwiched between the clamp head 1124 and the flange 122 facing the clamp head 1124.
　図１４に示すように、クランプシャフト保持機構１１３０は、クランプシャフト１１２３と螺合してクランプシャフト１１２３を保持する機構である。クランプシャフト保持機構１１３０は、クランプシャフト保持部材１１３１とＯリング１１３２を主体として構成されている。クランプシャフト保持部材１１３１は、中空の略円筒状の部材である。 As shown in FIG. 14, the clamp shaft holding mechanism 1130 is a mechanism that holds the clamp shaft 1123 by screwing with the clamp shaft 1123. The clamp shaft holding mechanism 1130 is mainly composed of a clamp shaft holding member 1131 and an O-ring 1132. The clamp shaft holding member 1131 is a hollow substantially cylindrical member.
　図１７に示すように、クランプシャフト保持部材１１３１の中空部分は、クランプシャフト１１２３のねじ部１１２５と螺合するねじ部１１３３が設けられている。このねじ部１１３３には、雌ねじが形成されている。また、図１４、図１６に示すように、クランプシャフト保持部材１１３１には、係合部材１４１と係合可能な溝部１１３４が形成されている。さらに、クランプシャフト保持部材１１３１には、径方向に突出する突出部１１３５が形成されている。このクランプシャフト保持部材１１３１は、スピンドル１２０の内部に配置されており、突出部１１３５がスピンドル１２０とガイド部材１２１の間に配置されている。これにより、クランプシャフト保持部材１１３１は、スピンドル１２０およびガイド部材１２１に対して、周方向に相対回転可能とされている。クランプシャフト保持部材１１３１の外周には、Ｏリング１１３２が配置されており、クランプシャフト保持部材１１３１が周方向に回動したときに、スピンドル１２０の内側の壁との間に摩擦抵抗を生じさせている。このクランプシャフト保持部材１１３１が、本発明における「螺合部材」に対応する実施構成例である。 17, the hollow portion of the clamp shaft holding member 1131 is provided with a screw portion 1133 that is screwed with the screw portion 1125 of the clamp shaft 1123. The threaded portion 1133 is formed with a female thread. As shown in FIGS. 14 and 16, the clamp shaft holding member 1131 is formed with a groove portion 1134 that can engage with the engaging member 141. Further, the clamp shaft holding member 1131 is formed with a protruding portion 1135 protruding in the radial direction. The clamp shaft holding member 1131 is disposed inside the spindle 120, and the protruding portion 1135 is disposed between the spindle 120 and the guide member 121. As a result, the clamp shaft holding member 1131 can rotate relative to the spindle 120 and the guide member 121 in the circumferential direction. An O-ring 1132 is disposed on the outer periphery of the clamp shaft holding member 1131, and when the clamp shaft holding member 1131 rotates in the circumferential direction, a frictional resistance is generated between the inner wall of the spindle 120. Yes. This clamp shaft holding member 1131 is an implementation structural example corresponding to the “screwing member” in the present invention.
　図１４、図１６に示すように、回転制御機構１０４は、クランプシャフト保持部材１１３１のスピンドル１２０に対する相対回転を制御する機構である。この回転制御機構１０４は、スラストピン１４０、係合部１４１、バネ受け部１４２、コイルバネ１４３、カムレバー機構１５０等を主体として構成されている。 14 and 16, the rotation control mechanism 104 is a mechanism that controls the relative rotation of the clamp shaft holding member 1131 with respect to the spindle 120. The rotation control mechanism 104 is mainly composed of a thrust pin 140, an engaging portion 141, a spring receiving portion 142, a coil spring 143, a cam lever mechanism 150, and the like.
　スラストピン１４０は、スピンドル１２０の内側に配置され、長軸方向に摺動可能であり、スピンドル１２０の周方向に回動可能とされている。係合部１４１は、クランプシャフト保持部材１３１の溝部１３４と係合可能であり、スラストピン１４０の先端部に配置されている。バネ受け部１４２は、交差方向にスラストピン１４０から突出した円盤状の部材であり、スラストピン１４０と係合部１４１の間に配置されている。スラストピン１４０と係合部１４１は、バネ受け部１４２を介して結合されており、一体となってスピンドル１２０の内部を長軸方向に摺動可能であるとともに、スピンドル１２０の周方向に旋回可能に構成されている。スラストピン１４０の係合部１４１とは反対側の端部は、曲面状に構成されている。また、スラストピン１４０には、Ｏリング１４４が配置されている。このＯリング１４４は、スピンドル１２０の内壁と当接するように配置されており、外部からスラストピン１４０とスピンドル１２０の間を通過してスピンドル１２０内部に混入する粉塵を遮断している。コイルバネ１４３は、スピンドル１２０の内部に配置され、一端がバネ受け部１４２に当接し、他端がスピンドル１２０に当接している。これにより、コイルバネ１４３は、スラストピン１４０、係合部１４１およびバネ受け部１４２をスピンドル１２０の内部において、クランプシャフト保持部材１１３１が配置された方向に付勢している。 The thrust pin 140 is disposed inside the spindle 120, is slidable in the long axis direction, and is rotatable in the circumferential direction of the spindle 120. The engaging portion 141 can be engaged with the groove portion 134 of the clamp shaft holding member 131 and is disposed at the distal end portion of the thrust pin 140. The spring receiving portion 142 is a disk-like member that protrudes from the thrust pin 140 in the intersecting direction, and is disposed between the thrust pin 140 and the engaging portion 141. The thrust pin 140 and the engaging portion 141 are coupled via a spring receiving portion 142, and can integrally slide inside the spindle 120 in the major axis direction and can rotate in the circumferential direction of the spindle 120. It is configured. The end of the thrust pin 140 opposite to the engaging portion 141 is formed in a curved surface shape. Further, an O-ring 144 is disposed on the thrust pin 140. The O-ring 144 is disposed so as to contact the inner wall of the spindle 120, and blocks dust that passes between the thrust pin 140 and the spindle 120 from the outside and enters the inside of the spindle 120. The coil spring 143 is disposed inside the spindle 120, and one end is in contact with the spring receiving portion 142 and the other end is in contact with the spindle 120. Accordingly, the coil spring 143 biases the thrust pin 140, the engaging portion 141, and the spring receiving portion 142 in the spindle 120 in the direction in which the clamp shaft holding member 1131 is disposed.
　図１４、図１６に示すように、カムレバー機構１５０は、スラストピン１４０を長軸方向に摺動させる部材である。カムレバー機構１５０は、レバー部１５１、旋回軸１５３、旋回部材１５４を主体として構成されている。このレバー部１５１が、本発明における「操作部材」に対応する実施構成例である。 14 and 16, the cam lever mechanism 150 is a member that slides the thrust pin 140 in the long axis direction. The cam lever mechanism 150 is mainly composed of a lever portion 151, a turning shaft 153, and a turning member 154. This lever part 151 is the implementation structural example corresponding to the "operation member" in this invention.
　レバー部１５１には、図１４に示すように、当該レバー部１５１の長軸方向に沿う貫通穴１５１ａが形成されている。貫通穴１５１ａには、段付き部１５１ｂが形成されている。コイルバネ１５６と可動ピン１５７が、貫通穴１５１ａに収容されており、これによりコイルバネ１５６と可動ピン１５７は、レバー部１５１の長軸方向に沿うように配置される。可動ピン１５７には、当該可動ピン１５７の長軸方向に交差する方向に突出する突出部１５７ａが形成されている。この突出部１５７ａは、レバー部１５１の段付き部１５１ｂに当接可能に構成されている。コイルバネ１５６は、一端がスラストピン１４０に当接し、他端が可動ピン１５７の突出部１５７ａに当接している。これにより、コイルバネ１５６が可動ピン１５７を付勢している。言い換えると、コイルバネ１５６は、レバー部１５１の支点である旋回軸１５３から延在するレバー部１５１の長軸方向に沿って可動ピン１５７を付勢している。 As shown in FIG. 14, the lever portion 151 is formed with a through hole 151 a along the long axis direction of the lever portion 151. A stepped portion 151b is formed in the through hole 151a. The coil spring 156 and the movable pin 157 are accommodated in the through hole 151 a, whereby the coil spring 156 and the movable pin 157 are arranged along the long axis direction of the lever portion 151. The movable pin 157 is formed with a protruding portion 157 a that protrudes in a direction intersecting the long axis direction of the movable pin 157. The projecting portion 157a is configured to be able to contact the stepped portion 151b of the lever portion 151. The coil spring 156 has one end in contact with the thrust pin 140 and the other end in contact with the protruding portion 157 a of the movable pin 157. As a result, the coil spring 156 biases the movable pin 157. In other words, the coil spring 156 biases the movable pin 157 along the long axis direction of the lever portion 151 extending from the turning shaft 153 that is a fulcrum of the lever portion 151.
　可動ピン１５７は、コイルバネ１５６が配置された側と反対側の先端部が曲面状に構成されている。また、可動ピン１５７は、コイルバネ１５６に付勢されて先端部がレバー部１５１から突出している。この先端部は、コイルバネ１５６の付勢力に抗して押圧されることで、レバー部１５１内に入り込むように構成されている。また、可動ピン１５７は、突出部１５７ａがレバー部１５１の段付き部１５１ｂに当接することで、可動ピン１５７がレバー部１５１の外部に抜け落ちないように構成されている。 The tip of the movable pin 157 opposite to the side where the coil spring 156 is disposed is formed in a curved surface. Further, the movable pin 157 is biased by the coil spring 156, and the tip portion protrudes from the lever portion 151. The distal end portion is configured to enter the lever portion 151 by being pressed against the urging force of the coil spring 156. Further, the movable pin 157 is configured so that the movable pin 157 does not fall out of the lever portion 151 when the projecting portion 157 a contacts the stepped portion 151 b of the lever portion 151.
　なお、本体ハウジング１０１には、図１８に示すように、可動ピン１５７と係合可能な係合凹部１０１ａが形成されている。そして、図１４に示すように、可動ピン１５７は、係合凹部１０１ａと係合して、レバー部１５１が本体ハウジング１０１に対して固定される。この図１４に示されたレバー部１５１の位置が、本発明における「操作部材の収納位置」に対応する実施構成例である。また、係合凹部１０１ａが形成された本体ハウジング１０１が、本発明における「作業工具本体」に対応する実施構成例である。 The main body housing 101 is formed with an engaging recess 101a that can engage with the movable pin 157, as shown in FIG. Then, as shown in FIG. 14, the movable pin 157 engages with the engaging recess 101 a, and the lever portion 151 is fixed to the main body housing 101. The position of the lever portion 151 shown in FIG. 14 is an implementation configuration example corresponding to the “operating member storage position” in the present invention. Moreover, the main body housing 101 in which the engagement recessed part 101a was formed is the implementation structural example corresponding to the "work tool main body" in this invention.
　図１６に示すように、旋回部材１５４は、Ｏリング１５５を介してスピンドル１２０の周方向に旋回可能に本体ハウジング１０１に取り付けられている。旋回部材１５４は、断面が略円形である旋回部１５４ａと、旋回部１５４ａからスピンドル１２０の長軸方向に延在した２つの支持部１５４ｂから構成されている。この２つの支持部１５４ｂの間に旋回軸１５３を保持している。また、旋回部材１５４がスピンドル１２０の周方向に旋回することで、レバー部１５１がスピンドル１２０の周方向に旋回可能に構成されている。 As shown in FIG. 16, the turning member 154 is attached to the main body housing 101 via an O-ring 155 so as to be turnable in the circumferential direction of the spindle 120. The turning member 154 includes a turning portion 154a having a substantially circular cross section and two support portions 154b extending from the turning portion 154a in the long axis direction of the spindle 120. A pivot shaft 153 is held between the two support portions 154b. Further, the lever member 151 is configured to be able to turn in the circumferential direction of the spindle 120 by turning the turning member 154 in the circumferential direction of the spindle 120.
　図２０および図２１に示すように、レバー部１５１は、スピンドル１２０の周方向に旋回可能に構成されているとともに、図１４および図１８に示すように、旋回軸１５３の周方向に旋回可能に構成されている。このとき、スラストピン１４０の先端部は曲面状に形成されているため、レバー部１５１を旋回させる際に、コイルバネ１５６は滑らかにスラストピン１４０の表面を滑る。すなわち、スラストピン１４０の先端部は、レバー部１５１をスピンドル１２０の周方向と旋回軸１５３の周方向のいずれに旋回させても、コイルバネ１５６が滑らかにスラストピン１４０の表面を滑るように、それぞれの方向に関して曲面状に形成されている。これにより、レバー部１５１は、複数の方向に旋回可能に構成されている。 As shown in FIGS. 20 and 21, the lever portion 151 is configured to be turnable in the circumferential direction of the spindle 120, and is turnable in the circumferential direction of the turning shaft 153 as shown in FIGS. 14 and 18. It is configured. At this time, since the tip end portion of the thrust pin 140 is formed in a curved surface shape, the coil spring 156 smoothly slides on the surface of the thrust pin 140 when the lever portion 151 is turned. That is, the tip portion of the thrust pin 140 is configured so that the coil spring 156 smoothly slides on the surface of the thrust pin 140 regardless of whether the lever portion 151 is swung in the circumferential direction of the spindle 120 or the swiveling shaft 153. It is formed in a curved shape with respect to the direction. Thereby, the lever part 151 is comprised so that turning in a some direction is possible.
　また、可動ピン１５７の先端部は曲面状に形成されているため、レバー部１５１を旋回させる際に、先端部が本体ハウジング１０１に当接することで、可動ピン１５７がレバー部１５１内に入り込む。この可動ピン１５７の先端部は、レバー部１５１の旋回方向であるスピンドル１２０の周方向と旋回軸１５３の周方向のそれぞれの方向に関して曲面状に形成されている。これにより、レバー部１５１を旋回させることで、可動ピン１５７を係合凹部１０１ａに係合させたり、その係合を解除させたりすることができる。すなわち、レバー部１５１を複数の方向のいずれの方向に旋回させても、可動ピン１５７を係合凹部１０１ａに係合させたり、その係合を解除させたりすることができる。 Further, since the distal end portion of the movable pin 157 is formed in a curved surface shape, the movable pin 157 enters the lever portion 151 when the distal end portion comes into contact with the main body housing 101 when the lever portion 151 is turned. The distal end portion of the movable pin 157 is formed in a curved shape with respect to the respective directions of the circumferential direction of the spindle 120 and the circumferential direction of the turning shaft 153 that are turning directions of the lever portion 151. Thereby, by turning the lever part 151, the movable pin 157 can be engaged with the engagement recess 101a, or the engagement can be released. In other words, the movable pin 157 can be engaged with or released from the engaging recess 101a even if the lever 151 is turned in any of a plurality of directions.
　以上の通り構成された回転制御機構１０４は、レバー部１５１を、図１４に示す位置と、図１８に示す位置の間を旋回軸１５３の周方向に旋回させることで、スラストピン１４０を長軸方向に移動させることができる。スラストピン１４０が移動されることで、係合部１４１が、クランプシャフト保持部材１１３１の溝部１１３４に係合可能となる。なお、クランプシャフト保持部材１１３１は、スピンドル１２０に対して回動可能であるため、溝部１１３４の位置によっては、レバー部１５１を旋回軸１５３の周方向に旋回させただけでは、係合部１４１と溝部１１３４が係合しない場合がある。係合部１４１と溝部１１３４が係合しない場合には、図１９に示すように、レバー部１５１をスピンドル１２０の周方向に旋回させることで、係合部１４１と溝部１１３４を係合させることができる。 The rotation control mechanism 104 configured as described above turns the thrust pin 140 to the long axis by turning the lever portion 151 in the circumferential direction of the turning shaft 153 between the position shown in FIG. 14 and the position shown in FIG. Can be moved in the direction. By moving the thrust pin 140, the engaging portion 141 can be engaged with the groove portion 1134 of the clamp shaft holding member 1131. Since the clamp shaft holding member 1131 is rotatable with respect to the spindle 120, depending on the position of the groove portion 1134, if the lever portion 151 is simply turned in the circumferential direction of the turning shaft 153, The groove 1134 may not engage. When the engaging portion 141 and the groove portion 1134 are not engaged, the engaging portion 141 and the groove portion 1134 can be engaged by turning the lever portion 151 in the circumferential direction of the spindle 120 as shown in FIG. it can.
　ブレード２００を着脱する際は、係合部材１４１と溝部１１３２を係合させた状態で、レバー部１５１をスピンドル１２０の周方向に旋回させることで、クランプシャフト保持部材１１３１のスピンドル１２０の周方向の回動を制御する。 When attaching or detaching the blade 200, the lever portion 151 is turned in the circumferential direction of the spindle 120 in a state where the engaging member 141 and the groove portion 1132 are engaged, so that the clamp shaft holding member 1131 is moved in the circumferential direction of the spindle 120. Control the rotation.
　具体的には、クランプシャフト１１２３を回動不能に保持した状態で、レバー部１５１をスピンドル１２０の周方向に旋回させることで、クランプシャフト１１２３とクランプシャフト保持部材１１３１を螺合させ、あるいはその螺合を解除することができる。クランプシャフト１１２３がクランプシャフト保持部材１１３１から取り外されることで、ブレード２００を着脱することができる。また、クランプシャフト１１２３がクランプシャフト保持部材１１３１に螺合して保持されることで、ブレード２００がフランジ１２２とクランプヘッド１１２４の間に挟持される。このクランプシャフト保持部材１１３１が、本発明における「保持部材」に対応する実施構成例である。 Specifically, the clamp shaft 1123 and the clamp shaft holding member 1131 are screwed together by rotating the lever portion 151 in the circumferential direction of the spindle 120 in a state where the clamp shaft 1123 is held unrotatable, or the screw thereof. Can be canceled. The blade 200 can be attached and detached by removing the clamp shaft 1123 from the clamp shaft holding member 1131. Further, the clamp shaft 1123 is screwed and held on the clamp shaft holding member 1131, whereby the blade 200 is sandwiched between the flange 122 and the clamp head 1124. This clamp shaft holding member 1131 is an implementation structural example corresponding to the “holding member” in the present invention.
　以上の第２実施形態によれば、クランプシャフト保持部材１１３１がクランプシャフト１１２３と直接螺合する構成であるため、クランプシャフト保持部材１１３１によってクランプシャフト１１２３を確実に保持することができる。 According to the second embodiment described above, since the clamp shaft holding member 1131 is directly screwed with the clamp shaft 1123, the clamp shaft 1123 can be reliably held by the clamp shaft holding member 1131.
（第３実施形態）
　次に、第３実施形態につき、図２２～図２９を参照しつつ詳細に説明する。図２２に示すように、第３実施形態は、工具保持機構２０３が第２実施形態と異なる。図２３に示すように、工具保持機構２０３は、第１実施形態と同様にクランプシャフト保持機構２３０の螺合部材２３１がスピンドル２２０と螺合するように構成されている。なお、第２実施形態と同様の構成については、同じ符号を付して説明を省略する。 (Third embodiment)
Next, the third embodiment will be described in detail with reference to FIGS. As shown in FIG. 22, the third embodiment is different from the second embodiment in the tool holding mechanism 203. As shown in FIG. 23, the tool holding mechanism 203 is configured such that the screwing member 231 of the clamp shaft holding mechanism 230 is screwed with the spindle 220 as in the first embodiment. In addition, about the structure similar to 2nd Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.
　図２３に示すように、スピンドル２２０の内側には、第１段付部２２０ａ、第２段付部２２０ｂが形成されている。また、スピンドル２２０の内側には、螺合部材２３１と螺合するネジ山２２０ｃが形成されている。スピンドル２２０の先端部には、ガイド部材２２１が取り付けられている。図２４に示すように、ガイド部材２２１は、スピンドル２２０の外側に係合して固定される略円筒状の部材である。また、ガイド部材２２１には、円盤状のフランジ２２２が取り付けられている。このスピンドル２２０およびガイド部材２２１およびフランジ２２２が、本発明における「第１シャフト」に対応する実施構成例である。 23, a first stepped portion 220a and a second stepped portion 220b are formed inside the spindle 220. Further, a screw thread 220 c that is screwed with the screwing member 231 is formed inside the spindle 220. A guide member 221 is attached to the tip of the spindle 220. As shown in FIG. 24, the guide member 221 is a substantially cylindrical member that is engaged with and fixed to the outside of the spindle 220. In addition, a disk-shaped flange 222 is attached to the guide member 221. The spindle 220, the guide member 221 and the flange 222 are an implementation configuration example corresponding to the “first shaft” in the present invention.
　図２４に示すように、クランプシャフト２２３は、略円柱状のシャフトの端部に一体に形成されたクランプヘッド２２４を有している。クランプシャフト２２３は、ガイド部材２２１を介してスピンドル２２０の内側に挿入可能で、スピンドル２２０に対して着脱可能に構成されている。なお、クランプシャフト２２３の他端部は、球面状に形成されている。このクランプシャフト２２３が、本発明における「第２シャフト」に対応する実施構成例である。 As shown in FIG. 24, the clamp shaft 223 has a clamp head 224 formed integrally with the end of the substantially cylindrical shaft. The clamp shaft 223 can be inserted into the spindle 220 via the guide member 221 and can be attached to and detached from the spindle 220. The other end of the clamp shaft 223 is formed in a spherical shape. The clamp shaft 223 is an implementation configuration example corresponding to the “second shaft” in the present invention.
　そして、工具保持機構２０３は、フランジ２２２とクランプヘッド２２４の間にブレード２００を挟持可能に構成されている。このフランジ２２２、クランプヘッド２２４がそれぞれ、本発明における「第１クランプ部」、「第２クランプ部」に対応する実施構成例である。 The tool holding mechanism 203 is configured to be able to hold the blade 200 between the flange 222 and the clamp head 224. The flange 222 and the clamp head 224 are implementation configuration examples corresponding to the “first clamp portion” and the “second clamp portion” in the present invention, respectively.
　図２４に示すように、クランプシャフト保持機構２３０は、クランプシャフト２２３を保持する機構である。このクランプシャフト保持機構２３０は、螺合部材２３１、クランプ部材２３２、回転力伝達部材２３３を主体として構成されている。 As shown in FIG. 24, the clamp shaft holding mechanism 230 is a mechanism that holds the clamp shaft 223. The clamp shaft holding mechanism 230 is mainly composed of a screwing member 231, a clamp member 232, and a rotational force transmission member 233.
　図２４に示すように、螺合部材２３１は、略円筒状の部材であり、スピンドル２２０の内側に配置されている。螺合部材２３１の外周面には、スピンドル２２０のネジ山２２０ｃと螺合するネジ山２３１ａが形成されている。これにより、螺合部材２３１がスピンドル２２０と螺合して回転することで、螺合部材２３１がスピンドル２２０の長軸方向に移動可能に構成されている。 As shown in FIG. 24, the screwing member 231 is a substantially cylindrical member, and is disposed inside the spindle 220. On the outer peripheral surface of the screw member 231, a screw thread 231 a that is screwed with the screw thread 220 c of the spindle 220 is formed. Thus, the screwing member 231 is configured to be movable in the long axis direction of the spindle 220 by being screwed with the spindle 220 and rotating.
　図２６に示すように、螺合部材２３１の中心領域には、クランプシャフト２２３が挿入されるクランプシャフト挿入穴２３４が形成されている。さらに、螺合部材２３１は、クランプシャフト挿入穴２３４に連接するクランプ部材保持部２３５を有している。当該クランプ部材保持部２３５は、クランプシャフト挿入穴２３４に対して凹状に形成されている。このクランプ部材保持部２３５には、クランプ部材２３２の凸部２３２ｂと係合可能な２つの係合凹部２３５ａが設けられている。さらに、図２４に示すように、クランプ部材保持部２３５には、スピンドル２２０の長軸方向に対して傾斜した傾斜面２３５ｂが形成されている。また、図２６に示すように、螺合部材２３１の外周面には、回転力伝達部材２３３の係合凸部２３３ｃと係合可能な係合凹部２３６が形成されている。 26, a clamp shaft insertion hole 234 into which the clamp shaft 223 is inserted is formed in the central region of the screwing member 231. As shown in FIG. Further, the screwing member 231 has a clamp member holding portion 235 connected to the clamp shaft insertion hole 234. The clamp member holding portion 235 is formed in a concave shape with respect to the clamp shaft insertion hole 234. The clamp member holding portion 235 is provided with two engagement concave portions 235a that can be engaged with the convex portions 232b of the clamp member 232. Further, as shown in FIG. 24, the clamp member holding portion 235 is formed with an inclined surface 235 b inclined with respect to the major axis direction of the spindle 220. Further, as shown in FIG. 26, an engagement recess 236 that can be engaged with the engagement projection 233 c of the rotational force transmission member 233 is formed on the outer peripheral surface of the screw member 231.
　図２４～図２６に示すように、クランプ部材２３２は、略楔形状の部材であり、クランプ部材保持部２３５に配置されている。クランプ部材２３２は、螺合部材２３１と協働してクランプシャフト２２３を保持するように構成されている。すなわち、クランプ部材２３２には、螺合部材２３１の傾斜面２３５ｂと係合可能な傾斜面２３２ａが形成されている。また、クランプ部材２３２の側面には、螺合部材２３１の係合凹部２３５ａと係合可能な２つの凸部２３２ｂが設けられている。さらに、クランプ部材２３２には、下方に向かって突出して形成された２つの移動規制部２３２ｃが形成されている。すなわち、第３実施形態においては、ガイド部材２２１には内側突出部が形成されておらず、クランプ部材２３２に突出部が形成されている。 24 to 26, the clamp member 232 is a substantially wedge-shaped member and is disposed in the clamp member holding portion 235. The clamp member 232 is configured to hold the clamp shaft 223 in cooperation with the screwing member 231. That is, the clamp member 232 is formed with an inclined surface 232 a that can be engaged with the inclined surface 235 b of the screwing member 231. Further, two convex portions 232 b that can be engaged with the engaging concave portions 235 a of the screwing member 231 are provided on the side surface of the clamp member 232. Furthermore, the clamp member 232 is formed with two movement restricting portions 232c that protrude downward. That is, in the third embodiment, the guide member 221 is not formed with the inner protrusion, and the clamp member 232 is formed with the protrusion.
　図２４に示すように、回転力伝達部材２３３は、スラストピン１４０の回転を螺合部材２３１に伝達することで、螺合部材２３１をスピンドル２２０に対して回転させる部材である。回転力伝達部材２３３は、略円盤状に形成された本体部２３３ａを有している。図２７に示すように、本体部２３３ａには、スラストピン１４０の係合部１４１が係合する略長方形状の係合穴２３３ｂが形成されている。また、図２６に示すように、回転力伝達部材２３３は、螺合部材２３１の係合凹部２３６に係合可能な２つの凸部２３３ｃが、本体部２３３ａから突出して形成されている。 24, the rotational force transmission member 233 is a member that rotates the screwing member 231 relative to the spindle 220 by transmitting the rotation of the thrust pin 140 to the screwing member 231. The rotational force transmission member 233 has a main body portion 233a formed in a substantially disc shape. As shown in FIG. 27, the main body 233a is formed with a substantially rectangular engagement hole 233b with which the engagement portion 141 of the thrust pin 140 is engaged. As shown in FIG. 26, the rotational force transmitting member 233 is formed with two convex portions 233c that can be engaged with the engaging concave portion 236 of the screwing member 231, protruding from the main body portion 233a.
　以上の通り構成されたクランプシャフト保持機構２３０においては、スラストピン１４０によって回転力伝達部材２３３が回転されることで、螺合部材２３１が回転される。これにより、螺合部材２３１は、スピンドル２２０の長軸方向へ相対移動される。螺合部材２３１の移動に伴って、クランプ部材保持部２３５の傾斜面２３５ａとクランプ部材２３２の傾斜面２３２ａが係合し、これにより、螺合部材２３１のスピンドル２２０の長軸方向への移動が、クランプ部材２３２のスピンドル２２０の径方向への移動に変換される。すなわち、クランプ部材２３２がスピンドル２２０の径方向に移動し、スピンドル２２０に挿入されたクランプシャフト２２３が保持される。このクランプ部材２３２が、本発明における「保持部材」に対応する実施構成例である。 In the clamp shaft holding mechanism 230 configured as described above, the screw member 231 is rotated by the rotational force transmitting member 233 being rotated by the thrust pin 140. Thereby, the screwing member 231 is relatively moved in the long axis direction of the spindle 220. As the screwing member 231 moves, the inclined surface 235a of the clamp member holding portion 235 and the inclined surface 232a of the clamp member 232 engage with each other, whereby the screwing member 231 moves in the major axis direction of the spindle 220. The clamp member 232 is converted into the movement of the spindle 220 in the radial direction. That is, the clamp member 232 moves in the radial direction of the spindle 220 and the clamp shaft 223 inserted into the spindle 220 is held. This clamp member 232 is an implementation structural example corresponding to the "holding member" in this invention.
　第３実施形態においては、レバー部１５１を、図２３に示す位置と、図２８に示す位置の間で旋回軸１５３の周方向に旋回させることで、スラストピン１４０を長軸方向に移動させることができる。スラストピン１４０が移動されることで、係合部１４１が、回転伝達部材２３３の係合穴２３３ｂに係合可能となる。なお、回転伝達部材２３３は、スピンドル２２０に対して回動可能であるため、係合穴２３３ｂの位置によっては、レバー部１５１を旋回軸１５３周りに旋回させただけでは、係合部１４１と係合穴２３３ｂが係合しない場合がある。係合部１４１と係合穴２３３ｂが係合しない場合には、図２９に示すように、レバー部１５１をスピンドル２２０の長軸周りに旋回させることで、係合部１４１と係合穴２３３ｂを係合させることができる。 In the third embodiment, the thrust pin 140 is moved in the longitudinal direction by turning the lever portion 151 in the circumferential direction of the turning shaft 153 between the position shown in FIG. 23 and the position shown in FIG. Can do. By moving the thrust pin 140, the engaging portion 141 can be engaged with the engaging hole 233b of the rotation transmitting member 233. Since the rotation transmitting member 233 is rotatable with respect to the spindle 220, depending on the position of the engagement hole 233b, the rotation of the lever 151 around the rotation shaft 153 is not related to the engagement 141. The joint hole 233b may not engage. When the engaging portion 141 and the engaging hole 233b do not engage with each other, as shown in FIG. 29, the lever portion 151 is turned around the long axis of the spindle 220, so that the engaging portion 141 and the engaging hole 233b are moved. Can be engaged.
　図２９に示すように、係合部１４１と係合穴２３３ｂが係合した状態で、レバー部１５１をスピンドル２２０の周方向に旋回させることで、回転力伝達部材２３３をスピンドル２２０の周方向に回転させることができる。回転力伝達部材２３３の回転により、回転力伝達部材２３３の凸部２３３ｃが、螺合部材２３１をスピンドル２２０の周方向に回転させる。これにより、螺合部材２３１がスピンドル２２０に対して相対回転し、スピンドル２２０の長軸方向に移動する。 As shown in FIG. 29, in a state where the engaging portion 141 and the engaging hole 233b are engaged, the lever portion 151 is turned in the circumferential direction of the spindle 220, so that the rotational force transmitting member 233 is moved in the circumferential direction of the spindle 220. Can be rotated. By the rotation of the rotational force transmission member 233, the convex portion 233c of the rotational force transmission member 233 rotates the screwing member 231 in the circumferential direction of the spindle 220. As a result, the screwing member 231 rotates relative to the spindle 220 and moves in the major axis direction of the spindle 220.
　螺合部材２３１が、スピンドル２２０の長軸方向における、カムレバー機構１５０が配置された側（上方向）に移動することで、クランプシャフト挿入穴２３４に挿入されたクランプシャフト２２３をクランプ部材２３２で保持する。すなわち、螺合部材２３１が上方向に移動すると、クランプ部材保持部２３５に保持されたクランプ部材２３２も上方向に移動する。回転力伝達部材２３３が第２段付部２２０ｂに当接し、さらにクランプ部材２３２が回転力伝達部材２３３に当接すると、クランプ部材２３２は、回転力伝達部材２３３と螺合部材２３１に挟持されて、クランプ部材２３２の上方向への移動が規制される。そして、螺合部材２３１をさらに上方向に移動させると、傾斜面２３２ａと傾斜面２３５ｂによってクランプ部材２３２の移動方向が変換されて、クランプ部材２３２がスピンドル２２０の中心に向かう径方向に移動される。これにより、クランプシャフト２２３が、クランプ部材２３２と螺合部材２３１との間に保持される。その結果、ブレード２００が、フランジ２２２とクランプヘッド２２４の間に挟持される。 The clamp shaft 223 inserted in the clamp shaft insertion hole 234 is held by the clamp member 232 by the screw member 231 moving to the side (upward direction) where the cam lever mechanism 150 is arranged in the longitudinal direction of the spindle 220. To do. That is, when the screwing member 231 moves upward, the clamp member 232 held by the clamp member holding portion 235 also moves upward. When the rotational force transmission member 233 comes into contact with the second stepped portion 220b and the clamp member 232 comes into contact with the rotational force transmission member 233, the clamp member 232 is sandwiched between the rotational force transmission member 233 and the screwing member 231. The upward movement of the clamp member 232 is restricted. When the screwing member 231 is further moved upward, the moving direction of the clamp member 232 is converted by the inclined surface 232a and the inclined surface 235b, and the clamp member 232 is moved in the radial direction toward the center of the spindle 220. . As a result, the clamp shaft 223 is held between the clamp member 232 and the screwing member 231. As a result, the blade 200 is sandwiched between the flange 222 and the clamp head 224.
　一方で、レバー部１５１をスピンドル２２０の長軸周りに回転させて、螺合部材２３１がスピンドル２２０の長軸方向におけるフランジ２２２が配置された側（下方向）に移動されると、クランプ部材２３２によるクランプシャフト２２３のクランプが解除される。すなわち、スラストピン１４０に回転されて螺合部材２３１が下方向に移動すると、クランプ部材２３２の移動規制部２３２ｃが、ガイド部材２２１に当接して、クランプ部材２３２の下方向への移動が規制される。そして、螺合部材２３１をさらに下方向に移動させると、傾斜面２３２ａと傾斜面２３５ｂの係合が解除される。これにより、クランプ部材２３２によるクランプシャフト２２３の保持が解除され、クランプシャフト２２３を取り外すことができる。クランプシャフト２２３を取り外すことで、フランジ２２２とクランプヘッド２２４に挟持されたブレード２００を交換することができる。 On the other hand, when the lever portion 151 is rotated around the major axis of the spindle 220 and the screwing member 231 is moved to the side (downward) where the flange 222 is arranged in the major axis direction of the spindle 220, the clamp member 232 is moved. The clamp shaft 223 is released from the clamp. That is, when the screw member 231 is moved downward by being rotated by the thrust pin 140, the movement restricting portion 232c of the clamp member 232 is in contact with the guide member 221, and the downward movement of the clamp member 232 is restricted. The When the screwing member 231 is further moved downward, the engagement between the inclined surface 232a and the inclined surface 235b is released. Thereby, holding | maintenance of the clamp shaft 223 by the clamp member 232 is cancelled | released, and the clamp shaft 223 can be removed. By removing the clamp shaft 223, the blade 200 sandwiched between the flange 222 and the clamp head 224 can be replaced.
　以上の第３実施形態によれば、螺合部材２３１とスピンドル２２０の螺合によって、クランプ部材２３２がクランプシャフト２２３の径方向に移動される。すなわち、螺合部材２３１とスピンドル２２０の螺合による移動をクランプ部材２３２のクランプシャフト２２３の径方向への移動に変換しているため、クランプシャフト２２３を保持するための保持力に関し、大きな保持力が発生される。 According to the third embodiment described above, the clamp member 232 is moved in the radial direction of the clamp shaft 223 by the screwing of the screwing member 231 and the spindle 220. That is, since the movement caused by the screwing of the screwing member 231 and the spindle 220 is converted into the movement of the clamp member 232 in the radial direction of the clamp shaft 223, the holding force for holding the clamp shaft 223 is large. Is generated.
　また、図２３に示すように、可動ピン１５７が係合凹部１０１ａと係合して、レバー部１５１が本体ハウジング１０１に対して固定される。また、可動ピン１５７の先端部がスピンドル１２０の周方向と旋回軸１５３の周方向のそれぞれの方向に関して曲面状に形成されているため、レバー部１５１を複数の方向のいずれの方向に旋回させても、先端部が本体ハウジング１０１に当接することで、可動ピン１５７がレバー部１５１内に入り込む。これにより、レバー部１５１を複数の方向のいずれの方向に旋回させても、可動ピン１５７を係合凹部１０１ａに係合させたり、その係合を解除させたりすることができる。 Further, as shown in FIG. 23, the movable pin 157 engages with the engaging recess 101a, and the lever portion 151 is fixed to the main body housing 101. Further, since the tip of the movable pin 157 is formed in a curved shape with respect to the circumferential direction of the spindle 120 and the circumferential direction of the turning shaft 153, the lever portion 151 can be turned in any of a plurality of directions. In addition, the movable pin 157 enters the lever portion 151 by the tip portion coming into contact with the main body housing 101. As a result, the movable pin 157 can be engaged with or disengaged from the engaging recess 101a even if the lever portion 151 is turned in any of a plurality of directions.
　以上の第２実施形態および第３実施形態によれば、レバー部１５１が旋回軸１５３の周方向およびスピンドル１２０，２２０の周方向に旋回可能である。言い換えると、レバー部１５１は、複数の方向に旋回可能である。そして、レバー部１５１に先端部が曲面状の可動ピン１５７が設けられているため、いずれの方向に旋回した場合であっても、可動ピン１５７が本体ハウジング１０１の係合凹部１０１ａと係合される。これにより、レバー部１５１は、いずれの方向に旋回されても、本体ハウジング１０１に保持される。特に、スラストピン１４０が螺合部材と係合した状態で螺合部材を回動させるために、レバー部１５１を複数の方向に旋回する必要がある電動式振動工具１００において有用である。 According to the second and third embodiments described above, the lever portion 151 can turn in the circumferential direction of the turning shaft 153 and in the circumferential direction of the spindles 120 and 220. In other words, the lever part 151 can turn in a plurality of directions. Since the lever 151 is provided with a movable pin 157 having a curved tip, the movable pin 157 is engaged with the engagement recess 101a of the main body housing 101 regardless of the direction of rotation. The Accordingly, the lever portion 151 is held by the main body housing 101 regardless of which direction the lever portion 151 is turned. In particular, it is useful in the electric vibration tool 100 that needs to turn the lever portion 151 in a plurality of directions in order to turn the screwing member with the thrust pin 140 engaged with the screwing member.
（第４実施形態）
　次に、第４実施形態につき、図３０～図３３を参照しつつ詳細に説明する。第４実施形態は、工具保持機構３０３のうち、クランプシャフト保持機構３３０が、Ｏリング３３２とコイルバネ３３４の付勢力によって、クランプ部材３３１がクランプシャフト３２３を保持するように構成されている。なお、第１実施形態と同様の構成については、同じ符号を付して説明を省略する。 (Fourth embodiment)
Next, the fourth embodiment will be described in detail with reference to FIGS. 30 to 33. FIG. In the fourth embodiment, the clamp shaft holding mechanism 330 in the tool holding mechanism 303 is configured such that the clamp member 331 holds the clamp shaft 323 by the urging force of the O-ring 332 and the coil spring 334. In addition, about the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.
　図３０に示すように、第４実施形態におけるスピンドル３２０は、中空の円筒状部材であり、モータ１１０の出力軸１１１に対して交差する方向に長軸方向が延在するように配置されている。スピンドル３２０は、長軸方向の２箇所において、長軸方向周りに回転可能にベアリング３２５，３２６を介して、本体ハウジング１０１に支持されている。スピンドル３２０は、長軸方向におけるベアリング３２５，３２６の間の中間領域に、スピンドル３２０の径方向に貫通するクランプ部材挿通孔３２０ａが形成されている。また、図３１に示すように、スピンドル３２０の長軸方向におけるクランプ部材挿通孔３２０ａとベアリング３２６の間の中間領域には、クランプ部材挿通孔３２０ａと交差する方向にスピンドル３２０を貫通する係合ピン挿通孔３２０ｂが形成されている。スピンドル３２０の先端部には、フランジ３２２が取り付けられている。このスピンドル３２０が、本発明における「第１シャフト」に対応し、フランジ３２２が、本発明における「第１クランプ部」に対応する実施構成例である。 As shown in FIG. 30, the spindle 320 in the fourth embodiment is a hollow cylindrical member, and is arranged so that the major axis direction extends in a direction intersecting the output shaft 111 of the motor 110. . The spindle 320 is supported by the main body housing 101 via bearings 325 and 326 so as to be rotatable around the long axis direction at two locations in the long axis direction. The spindle 320 has a clamp member insertion hole 320a penetrating in the radial direction of the spindle 320 in an intermediate region between the bearings 325 and 326 in the long axis direction. In addition, as shown in FIG. 31, in the middle region between the clamp member insertion hole 320a and the bearing 326 in the major axis direction of the spindle 320, an engagement pin that penetrates the spindle 320 in a direction intersecting the clamp member insertion hole 320a. An insertion hole 320b is formed. A flange 322 is attached to the tip of the spindle 320. The spindle 320 corresponds to the “first shaft” according to the present invention, and the flange 322 corresponds to the “first clamp portion” according to the present invention.
　クランプシャフト保持機構３３０は、クランプシャフト３２３のクランプヘッド３２４と反対側の端部を保持する機構である。図３０～図３２に示すように、クランプシャフト保持機構３３０は、クランプ部材３３１、Ｏリング３３２、環状部材３３３、コイルバネ３３４を主体として構成されている。 The clamp shaft holding mechanism 330 is a mechanism that holds the end of the clamp shaft 323 opposite to the clamp head 324. As shown in FIGS. 30 to 32, the clamp shaft holding mechanism 330 is mainly configured by a clamp member 331, an O-ring 332, an annular member 333, and a coil spring 334.
　図３０に示すように、クランプ部材３３１は、スピンドル３２０の周方向における対向する２箇所に配置され、スピンドル３２０のクランプ部材挿通孔３２０ａに挿通されている。このクランプ部材３３１は、クランプ部材挿通孔３２０ａを通して、スピンドル３２０の径方向に移動可能に構成されている。クランプ部材３３１は、クランプシャフト３２３と対向する位置に、クランプシャフト３２３の係合溝と係合可能な複数の凸部が形成されている。また、図３２に示すように、クランプ部材３３１は、スピンドル３２０の長軸方向に対して傾斜する傾斜面３３１ａを有している。この傾斜面３３１ａが環状部材３３３の傾斜面と係合可能に構成されている。 30, the clamp members 331 are disposed at two opposing positions in the circumferential direction of the spindle 320, and are inserted through the clamp member insertion holes 320a of the spindle 320. The clamp member 331 is configured to be movable in the radial direction of the spindle 320 through the clamp member insertion hole 320a. The clamp member 331 has a plurality of convex portions that can be engaged with the engagement grooves of the clamp shaft 323 at positions facing the clamp shaft 323. As shown in FIG. 32, the clamp member 331 has an inclined surface 331 a that is inclined with respect to the major axis direction of the spindle 320. The inclined surface 331a is configured to be engageable with the inclined surface of the annular member 333.
　図３０に示すように、クランプ部材３３１の外側には、Ｏリング３３２が配置されている。Ｏリング３３２は、スピンドル３２０の中心に向かって径方向にクランプ部材３３１を付勢している。これにより、クランプ部材３３１に形成された凸部が、スピンドル３２０の内側に配置されたクランプシャフト３２３の係合溝に係合することで、クランプシャフト３２３を保持する。また、Ｏリング３３２は、クランプ部材３３１がクランプシャフト３２３を保持していない場合において、クランプ部材３３１の姿勢を保持するための付勢力をクランプ部材３３１に作用させる。 30, an O-ring 332 is disposed outside the clamp member 331. The O-ring 332 biases the clamp member 331 in the radial direction toward the center of the spindle 320. Thereby, the convex part formed in the clamp member 331 engages with the engagement groove of the clamp shaft 323 arranged inside the spindle 320, thereby holding the clamp shaft 323. Further, the O-ring 332 applies an urging force for holding the posture of the clamp member 331 to the clamp member 331 when the clamp member 331 does not hold the clamp shaft 323.
　環状部材３３３は、スピンドル３２０の径方向におけるクランプ部材３３１の外側を囲むように配置された環状の部材である。この環状部材３３３は、スピンドル３２０の長軸方向に移動可能に配置されている。また、環状部材３３３は、クランプ部材３３１の傾斜面３３１ａと係合する傾斜面を有している。コイルバネ３３４は、スピンドル３２０の長軸方向に沿って、スピンドル３２０周りに配置されている。そして、環状部材３３３は、コイルバネ３３４の付勢力によってスピンドル３２０の長軸方向に付勢されており、これによりクランプ部材３３１の傾斜面３３１ａと係合することで、クランプ部材３３１をスピンドル３２０の径方向に付勢している。すなわち、クランプ部材３３１と環状部材３３３の傾斜面の係合によって、クランプ部材３３１をスピンドル３２０の径方向に移動させている。 The annular member 333 is an annular member disposed so as to surround the outside of the clamp member 331 in the radial direction of the spindle 320. The annular member 333 is disposed so as to be movable in the long axis direction of the spindle 320. The annular member 333 has an inclined surface that engages with the inclined surface 331 a of the clamp member 331. The coil spring 334 is disposed around the spindle 320 along the long axis direction of the spindle 320. The annular member 333 is urged in the long axis direction of the spindle 320 by the urging force of the coil spring 334, and by this engagement with the inclined surface 331 a of the clamp member 331, the clamp member 331 is made to have a diameter of the spindle 320. Energized in the direction. That is, the clamp member 331 is moved in the radial direction of the spindle 320 by the engagement of the inclined surfaces of the clamp member 331 and the annular member 333.
　以上の通り構成されたクランプシャフト保持機構３３０は、Ｏリング３３２によってクランプ部材３３１がスピンドル３２０の径方向に付勢されて、クランプシャフト３２３を保持している。また、コイルバネ３３４によって付勢された環状部材３３３がクランプ部材３３１の傾斜面３３１ａに係合することにより、コイルバネ３３４の付勢力をスピンドル３２０の径方向の付勢力に変換している。これにより、コイルバネ３３４がクランプ部材３３１をスピンドル３２０の径方向に付勢して、クランプシャフト３２３を保持している。すなわち、Ｏリング３３２の付勢力あるいは／およびコイルバネ３３４の付勢力でクランプシャフト３２３を保持している。 In the clamp shaft holding mechanism 330 configured as described above, the clamp member 331 is biased in the radial direction of the spindle 320 by the O-ring 332 and holds the clamp shaft 323. Further, the annular member 333 biased by the coil spring 334 engages with the inclined surface 331 a of the clamp member 331, thereby converting the biasing force of the coil spring 334 into the radial biasing force of the spindle 320. Accordingly, the coil spring 334 biases the clamp member 331 in the radial direction of the spindle 320 and holds the clamp shaft 323. That is, the clamp shaft 323 is held by the urging force of the O-ring 332 and / or the urging force of the coil spring 334.
　また、コイルバネ３３４が環状部材３３３を付勢することで、クランプシャフト３２３を保持するとともに、クランプシャフト３２３を上方に向かって付勢している。これにより、クランプヘッド３２４をフランジ３２２に近接する方向に付勢して、ブレード２００をフランジ３２２とクランプヘッド３２４の間で挟持している。 The coil spring 334 biases the annular member 333, thereby holding the clamp shaft 323 and urging the clamp shaft 323 upward. Accordingly, the clamp head 324 is urged in the direction approaching the flange 322, and the blade 200 is sandwiched between the flange 322 and the clamp head 324.
　工具保持解除機構３０４は、クランプシャフト保持機構３３０によって保持されたクランプシャフト３２３の保持を解除することで、フランジ３２２とクランプシャフト３２３に挟持されたブレード２００を着脱可能にするための機構である。図３０に示すように、工具保持解除機構３０４は、スラストピン３４０、係合ピン３４１、クランプシャフト保持解除部材３４２、カムレバー３５０機構等を主体として構成されている。 The tool holding release mechanism 304 is a mechanism for making the blade 200 held between the flange 322 and the clamp shaft 323 detachable by releasing the holding of the clamp shaft 323 held by the clamp shaft holding mechanism 330. As shown in FIG. 30, the tool holding / release mechanism 304 is mainly composed of a thrust pin 340, an engaging pin 341, a clamp shaft holding / release member 342, a cam lever 350 mechanism, and the like.
　図３０に示すように、スラストピン３４０は、スピンドル３２０の内側にスピンドル３２０の長軸方向に摺動可能に配置されている。係合ピン３４１は、図３１に示すように、スピンドル３２０の係合ピン挿通孔３２０ｂに挿通されており、クランプシャフト保持解除部材３４２と係合している。この係合ピン３４１は、スラストピン３４０の移動に伴って、スラストピン３４０の下端に当接して移動するように構成されている。 30, the thrust pin 340 is disposed inside the spindle 320 so as to be slidable in the major axis direction of the spindle 320. As shown in FIG. 31, the engagement pin 341 is inserted through the engagement pin insertion hole 320 b of the spindle 320 and is engaged with the clamp shaft holding release member 342. The engaging pin 341 is configured to move in contact with the lower end of the thrust pin 340 as the thrust pin 340 moves.
　図３２に示すように、クランプシャフト保持解除部材３４２は、スピンドル３２０の外周を囲む円筒状の部材である。このクランプシャフト保持解除部材３４２は、係合ピン３４１と共にスピンドル３２０の長軸方向に移動可能に構成されている。さらに、クランプシャフト保持解除部材３４２は、環状部材３３３と係合することで、環状部材３３３と共にスピンドル３２０の長軸方向に移動可能に構成されている。 32, the clamp shaft holding / releasing member 342 is a cylindrical member surrounding the outer periphery of the spindle 320. As shown in FIG. The clamp shaft holding / releasing member 342 is configured to be movable in the major axis direction of the spindle 320 together with the engagement pin 341. Further, the clamp shaft holding / releasing member 342 is configured to be movable in the longitudinal direction of the spindle 320 together with the annular member 333 by engaging with the annular member 333.
　図３０、図３１に示すように、カムレバー機構３５０は、スラストピン３４０に当接して、スラストピン３４０をスピンドル３２０の長軸方向に摺動させる部材である。カムレバー機構３５０は、レバー部３５１、偏心部３５２、旋回軸３５３を主体として構成されている。第４実施形態においては、レバー部３５１は、旋回軸３５３周りにのみ旋回するように構成されている。 30 and 31, the cam lever mechanism 350 is a member that contacts the thrust pin 340 and slides the thrust pin 340 in the major axis direction of the spindle 320. The cam lever mechanism 350 is mainly composed of a lever portion 351, an eccentric portion 352, and a turning shaft 353. In the fourth embodiment, the lever portion 351 is configured to turn only around the turning shaft 353.
　図３０に示すように、レバー部３５１には、コイルバネ３５６と可動ピン３５７が収容されている。コイルバネ３５６および可動ピン３５７は、レバー部３５１の長軸方向に沿って配置されている。コイルバネ３５６は、一端が偏心部３５２に当接し、他端が可動ピン３５７に当接している。これにより、コイルバネ３５６が可動ピン３５７を付勢している。言い換えると、コイルバネ３５６は、レバー部３５１の支点である旋回軸３５３から延在するレバー部３５１の長軸方向に沿って可動ピン３５７を付勢している。 As shown in FIG. 30, a coil spring 356 and a movable pin 357 are accommodated in the lever portion 351. The coil spring 356 and the movable pin 357 are disposed along the long axis direction of the lever portion 351. The coil spring 356 has one end in contact with the eccentric portion 352 and the other end in contact with the movable pin 357. As a result, the coil spring 356 biases the movable pin 357. In other words, the coil spring 356 biases the movable pin 357 along the long axis direction of the lever portion 351 extending from the turning shaft 353 that is a fulcrum of the lever portion 351.
　可動ピン３５７は、コイルバネ３５６と当接する側と反対側の先端部が曲面状に構成されている。すなわち、レバー部３５１の旋回方向である旋回軸３５３の周方向に関して曲面状に形成されている。また、可動ピン３５７は、コイルバネ３５６に付勢されて先端部がレバー部３５１から突出し、コイルバネ３５６の付勢力に抗して先端部が押圧されることで、レバー部３５１内に入り込むように構成されている。 The tip of the movable pin 357 opposite to the side in contact with the coil spring 356 has a curved surface. That is, it is formed in a curved shape with respect to the circumferential direction of the turning shaft 353 that is the turning direction of the lever portion 351. Further, the movable pin 357 is configured to be urged by the coil spring 356 so that the distal end portion protrudes from the lever portion 351 and enters the lever portion 351 by pressing the distal end portion against the urging force of the coil spring 356. Has been.
　図３０に示すように、レバー部３５１が旋回軸３５３からモータ１１０に向かう方向に位置（以下、クランプ位置と称する）する場合には、偏心部３５２はスラストピン３４０と当接していない。一方、図３３に示すように、レバー部３５１を旋回させて、レバー部３５１が旋回軸３５３からクランプ位置と反対に向かう方向に位置（以下、リリース位置と称する）する場合には、偏心部３５２はスラストピン３４０と当接している。すなわち、レバー部３５１をクランプ位置からリリース位置に向けて旋回させることで、リリース位置に向かう途中で偏心部３５２がスラストピン３４０に当接する。その位置からさらに、レバー部３５１をリリース位置に向けて旋回させることで、偏心部３５２がスラストピン３４０をスピンドル３２０の長軸方向における下方に向かって移動させる。 30, when the lever portion 351 is positioned in the direction from the turning shaft 353 toward the motor 110 (hereinafter referred to as a clamp position), the eccentric portion 352 is not in contact with the thrust pin 340. On the other hand, as shown in FIG. 33, when the lever portion 351 is turned and the lever portion 351 is positioned in the direction opposite to the clamp position from the turning shaft 353 (hereinafter referred to as a release position), the eccentric portion 352 is provided. Is in contact with the thrust pin 340. That is, by turning the lever portion 351 from the clamp position toward the release position, the eccentric portion 352 contacts the thrust pin 340 on the way to the release position. By further turning the lever portion 351 toward the release position from that position, the eccentric portion 352 moves the thrust pin 340 downward in the longitudinal direction of the spindle 320.
　以上の通り構成された工具保持解除機構３０４は、レバー部３５１をクランプ位置からリリース位置に旋回させて、スラストピン３４０を摺動させることにより、係合ピン３４１およびクランプシャフト保持解除部材３４２がスピンドル３２０の長軸方向における下方に向かって移動する。このとき、クランプシャフト保持解除部材３４２は、環状部材３３３と共にスピンドル３２０の長軸方向における下方に移動し、クランプ部材３３１をスピンドル３２０の長軸方向に移動させる。クランプ部材３３１がスピンドル３２０に当接した後は、クランプシャフト保持解除部材３４２が環状部材３３３と共にスピンドル３２０の長軸方向における下方に移動することで、環状部材３３３とクランプ部材３３１の傾斜面３３１ａの係合が解除される。これにより、コイルバネ３３４の付勢力は、クランプ部材３３１に伝達されず、クランプシャフト３２３に作用しているコイルバネ３３４の付勢力が解除される。クランプシャフト３２３を保持するための付勢力が低減されることで、クランプシャフト３２３の保持を解除することが可能となり、クランプシャフト３２３をスピンドル３２０から取り外し可能となる。これにより、ブレード２００を取り外すことができる。 The tool holding release mechanism 304 configured as described above turns the lever portion 351 from the clamp position to the release position and slides the thrust pin 340, whereby the engagement pin 341 and the clamp shaft holding release member 342 are moved to the spindle. 320 moves downward in the major axis direction. At this time, the clamp shaft holding / releasing member 342 moves together with the annular member 333 downward in the major axis direction of the spindle 320, and moves the clamp member 331 in the major axis direction of the spindle 320. After the clamp member 331 comes into contact with the spindle 320, the clamp shaft holding / releasing member 342 moves downward together with the annular member 333 in the longitudinal direction of the spindle 320, so that the inclined surface 331a of the annular member 333 and the clamp member 331 is moved. The engagement is released. Thereby, the urging force of the coil spring 334 is not transmitted to the clamp member 331, and the urging force of the coil spring 334 acting on the clamp shaft 323 is released. By reducing the urging force for holding the clamp shaft 323, the holding of the clamp shaft 323 can be released, and the clamp shaft 323 can be detached from the spindle 320. Thereby, the blade 200 can be removed.
　一方、ブレード２００を装着する場合には、ブレード２００をフランジ３２２とクランプヘッド３２４の間に配置させて、クランプシャフト３２３をスピンドル３２０に挿入した状態で、レバー部３５１をリリース位置からクランプ位置に旋回させる。レバー部３５１の旋回に伴い、コイルバネ３３４の付勢力によってスラストピン３４０と環状部材３３３がスピンドル３２０の長軸方向における上方に移動される。そして、環状部材３３３の傾斜面とクランプ部材３３１の傾斜面３３１ａが係合し、コイルバネ３３４の付勢力がスピンドル３２０の径方向への付勢力に変換される。これにより、クランプ部材３３１をスピンドル３２０の径方向の中心に向かって移動される。そして、クランプ部材３３１の凸部とクランプシャフト３２３の係合溝が係合することで、クランプシャフト３２３が保持される。このとき、コイルバネ３３４の付勢力は、クランプ部材３３１を介してクランプシャフト３２３を保持するとともに、保持されたクランプシャフト３２３を上方に移動させることで、クランプヘッド３２４をフランジ３２２に近接する方向に移動させる。これにより、フランジ３２２とクランプヘッド３２４の間にブレード２００が挟持される。 On the other hand, when the blade 200 is mounted, the lever portion 351 is swung from the release position to the clamp position with the blade 200 disposed between the flange 322 and the clamp head 324 and the clamp shaft 323 inserted into the spindle 320. Let As the lever portion 351 turns, the thrust pin 340 and the annular member 333 are moved upward in the longitudinal direction of the spindle 320 by the biasing force of the coil spring 334. Then, the inclined surface of the annular member 333 and the inclined surface 331a of the clamp member 331 are engaged, and the urging force of the coil spring 334 is converted into the urging force in the radial direction of the spindle 320. As a result, the clamp member 331 is moved toward the radial center of the spindle 320. And the clamp shaft 323 is hold | maintained because the convex part of the clamp member 331 and the engagement groove | channel of the clamp shaft 323 engage. At this time, the urging force of the coil spring 334 moves the clamp head 324 in the direction close to the flange 322 by holding the clamp shaft 323 via the clamp member 331 and moving the held clamp shaft 323 upward. Let As a result, the blade 200 is sandwiched between the flange 322 and the clamp head 324.
　また、図３０に示すように、レバー部３５１がクランプ位置に位置する場合には、可動ピン３５７は、本体ハウジング１０１の係合凹部１０１ａと係合して、レバー部３５１が本体ハウジング１０１に対して固定される。この図３０に示されたレバー部３５１の位置が、本発明における「操作部材の収納位置」に対応する実施構成例である。 In addition, as shown in FIG. 30, when the lever portion 351 is located at the clamp position, the movable pin 357 engages with the engagement recess 101 a of the main body housing 101, and the lever portion 351 is relative to the main body housing 101. Fixed. The position of the lever portion 351 shown in FIG. 30 is an implementation configuration example corresponding to the “operating member storage position” in the present invention.
　また、レバー部３５１を図３０に示す位置と図３３に示す位置とを旋回させる際に、可動ピン３５７は、本体ハウジング１０１に当接することによって、コイルバネ３５６の付勢力に抗して先端部が押圧されて、レバー部３５１内に入り込む。すなわち、可動ピン３５７の先端部が曲面状に構成されているため、レバー部３５１を旋回させる際に、当該先端部が本体ハウジング１０１に当接することで、可動ピン３５７がレバー部３５１内に入り込む。これにより、レバー部３５１を旋回させることで、可動ピン３５７を係合凹部１０１ａに係合させたり、その係合を解除させたりすることができる。 Further, when the lever portion 351 is turned between the position shown in FIG. 30 and the position shown in FIG. 33, the movable pin 357 comes into contact with the main body housing 101, so that the tip end portion resists the biasing force of the coil spring 356. It is pressed and enters the lever portion 351. That is, since the distal end portion of the movable pin 357 is formed in a curved shape, when the lever portion 351 is turned, the distal end portion comes into contact with the main body housing 101, so that the movable pin 357 enters the lever portion 351. . Thereby, by turning the lever portion 351, the movable pin 357 can be engaged with the engagement concave portion 101a, or the engagement can be released.
　以上の第４実施形態によれば、スピンドル３２０の内側に配置されたクランプシャフト３２３を、スピンドル３２０の外側に配置されたＯリング３３２もしくはコイルバネ３３４の付勢力で保持することができるため、スピンドル３２０を細くすることができる。そのため、スピンドル３２０が軽量化されて、電動式振動工具１００を軽量化することができる。 According to the fourth embodiment described above, the clamp shaft 323 arranged inside the spindle 320 can be held by the urging force of the O-ring 332 or the coil spring 334 arranged outside the spindle 320. Can be made thinner. Therefore, the spindle 320 is reduced in weight, and the electric vibration tool 100 can be reduced in weight.
　以上の第２実施形態～第４実施形態は、第１実施形態と同様に、モータ１１０が通電駆動されると、図１５に示すように、出力軸１１１の回転運動は、偏心軸１１２およびベアリング１１３によって、矢印Ａで示される方向（以下、Ａ方向）への往復運動に変換される。Ａ方向への往復運動は、被駆動アーム１１４に伝達されて、スピンドル接続部１１５を中心とした矢印Ｂで示されるスピンドル１２０，２２０，３２０周りの円周方向（以下、Ｂ方向）への所定の角度をなす回転運動に変換される。これにより、スピンドル接続部１１５に接続されたスピンドル１２０がＢ方向に往復駆動される。その結果、フランジ１２２，２２２，３２２とクランプヘッド１１２４，２２４，３２４で挟持されたブレード２００を振動させて、被加工材に対して切断等の加工を遂行する。 In the second to fourth embodiments, as in the first embodiment, when the motor 110 is driven to energize, as shown in FIG. 15, the rotational movement of the output shaft 111 causes the eccentric shaft 112 and the bearing to rotate. 113 is converted into a reciprocating motion in the direction indicated by arrow A (hereinafter referred to as A direction). The reciprocating motion in the A direction is transmitted to the driven arm 114, and is predetermined in the circumferential direction (hereinafter referred to as the B direction) around the spindles 120, 220, and 320 indicated by the arrow B around the spindle connecting portion 115. It is converted into a rotational motion that makes an angle of. As a result, the spindle 120 connected to the spindle connecting portion 115 is driven to reciprocate in the B direction. As a result, the blade 200 sandwiched between the flanges 122, 222, 322 and the clamp heads 1124, 224, 324 is vibrated to perform processing such as cutting on the workpiece.
　第１実施形態の効果の他に、以上の第２実施形態～第４実施形態によれば、可動ピン１５７，３５７が本体ハウジング１０１の係合凹部と係合することで、レバー部１５１，３５１が保持される。すなわち、ブレード２００を挟持した状態で、レバー部１５１，３５１が保持されるため、電動式振動工具１００が被加工材に対して加工作業を行う際に、レバー部１５１，３５１が確実に保持される。これにより、加工作業時における、レバー部１５１，３５１の動きが抑制される。 In addition to the effects of the first embodiment, according to the second to fourth embodiments described above, the movable pins 157 and 357 are engaged with the engagement recesses of the main body housing 101, whereby the lever portions 151 and 351 are engaged. Is retained. That is, since the lever portions 151 and 351 are held in a state where the blade 200 is held, the lever portions 151 and 351 are securely held when the electric vibration tool 100 performs a machining operation on the workpiece. The Thereby, the movement of the lever parts 151 and 351 during the processing operation is suppressed.
　また、第２実施形態～第４実施形態によれば、コイルバネ１５６，３５６および可動ピン１５７，３５７がレバー部１５７，３５７の内部に収容されているため、外部からレバー部１５１，３５１を保持する構成に比べて、レバー部１５１，３５１を操作する際に、操作を阻害する部材が存在しない。すなわち、外部からレバー部１５１，３５１を保持する場合には、例えば本体ハウジング１０１側にレバー部１５１，３５１と保持するための保持部材を設ける必要がある。しかしながら、本体ハウジング１０１側に保持部材を設けると、レバー部１５１、３５１を操作する際に、ユーザの操作を阻害する可能性がある。この点、本発明においては、コイルバネ１５６，３５６および可動ピン１５７，３５７がレバー部１５１，３５１に収容されているため、ユーザの操作が阻害されない。 In addition, according to the second to fourth embodiments, the coil springs 156 and 356 and the movable pins 157 and 357 are accommodated inside the lever portions 157 and 357, so that the lever portions 151 and 351 are held from the outside. Compared to the configuration, when operating the lever portions 151 and 351, there is no member that obstructs the operation. That is, when holding the lever portions 151 and 351 from the outside, it is necessary to provide holding members for holding the lever portions 151 and 351 on the main body housing 101 side, for example. However, when the holding member is provided on the main body housing 101 side, there is a possibility that the user's operation may be hindered when the lever portions 151 and 351 are operated. In this regard, in the present invention, since the coil springs 156 and 356 and the movable pins 157 and 357 are accommodated in the lever portions 151 and 351, the user's operation is not hindered.
　また、第２実施形態～第４実施形態によれば、コイルバネ１５６，３５６は、レバー部１５１，３５１の支点である旋回軸１５３，３５３からレバー部１５１，３５１の長軸方向に延在する方向に配置されている。そのため、可動ピン１５７，３５７は、コイルバネ１５６，３５６によって、レバー部１５１，３５１の長軸方向に付勢される。したがって、レバー部１５１，３５１の支点から離間した部分で、レバー部１５１，３５１が本体ハウジング１０１に保持される。特に、旋回動作するレバー部１５１，３５１を保持する構成において特に有効である。 Further, according to the second to fourth embodiments, the coil springs 156, 356 extend from the pivot shafts 153, 353, which are fulcrums of the lever portions 151, 351, in the major axis direction of the lever portions 151, 351. Is arranged. Therefore, the movable pins 157 and 357 are biased in the major axis direction of the lever portions 151 and 351 by the coil springs 156 and 356. Therefore, the lever portions 151 and 351 are held by the main body housing 101 at portions spaced from the fulcrums of the lever portions 151 and 351. This is particularly effective in a configuration that holds the lever portions 151 and 351 that perform the turning operation.
　以上の第２実施形態～第４実施形態においては、コイルバネ１５６，３５６および可動ピン１５７，３５７がレバー部１５７，３５７に収容されていたが、これには限られない。例えば、コイルバネ１５６，３５６および可動ピン１５７，３５７がレバー部１５７，３５７の表面に露出するように配置されていてもよい。また、コイルバネ１５６，３５６および可動ピン１５７，３５７は、本体ハウジング１０１側に設けられていてもよい。 In the second to fourth embodiments described above, the coil springs 156 and 356 and the movable pins 157 and 357 are accommodated in the lever portions 157 and 357. However, the present invention is not limited to this. For example, the coil springs 156, 356 and the movable pins 157, 357 may be disposed so as to be exposed on the surfaces of the lever portions 157, 357. The coil springs 156 and 356 and the movable pins 157 and 357 may be provided on the main body housing 101 side.
　以上の第１実施形態および第３実施形態においては、クランプ部材１３２，２３２が一つのみ設けられていたが、複数のクランプ部材を有する構成であってもよい。 In the first and third embodiments described above, only one clamp member 132, 232 is provided, but a configuration having a plurality of clamp members may be used.
　また、第１実施形態～第４実施形態においては、先端工具としてブレード２００を用いて説明したが、これには限られない。例えば、先端工具として研磨パッド等の他の種類の先端工具を取り付けてもよい。 In the first to fourth embodiments, the blade 200 is used as the tip tool. However, the present invention is not limited to this. For example, another type of tip tool such as a polishing pad may be attached as the tip tool.
　また、第１実施形態～第４実施形態においては、作業工具として、電動式振動工具１００を用いて説明したが、これには限られない。例えば、先端工具を挟持する作業工具であれば、例えばグラインダや丸鋸のように先端工具が回転する作業工具にも本発明を適用することが可能である。 In the first to fourth embodiments, the electric vibration tool 100 is used as the work tool, but the present invention is not limited to this. For example, the present invention can be applied to a work tool in which the tip tool rotates, such as a grinder or a circular saw, as long as the work tool holds the tip tool.
（実施形態の各構成要素と本発明の各構成要素の対応関係）
　本実施形態は、本発明を実施するための形態の一例を示すものである。したがって、本発明は、本実施形態の構成に限定されるものではない。なお、本実施形態の各構成要素と本発明の各構成要素の対応関係を以下に示す。
　電動式振動工具１００は、本発明の「作業工具」に対応する構成の一例である。
　ブレード２００は、本発明の「先端工具」に対応する構成の一例である。
　スピンドル１２０，２２０，３２０は、本発明の「第１シャフト」に対応する構成の一例である。
　フランジ１２２，２２２，３２２は、本発明の「第１クランプ部」に対応する構成の一例である。
　クランプシャフト１２３，２２３，３２３，１１２３は、本発明の「第２シャフト」に対応する構成の一例である。
　クランプヘッド１２４，２２４，３２４，１１２４は、本発明の「第２クランプ部」に対応する構成の一例である。
　螺合部材１３１は、本発明の「カラー」に対応する構成の一例である。
　クランプ部材１３２は、本発明の「保持部材」に対応する構成の一例である。
　回転伝達部材１３３は、本発明の「回転伝達部材」に対応する構成の一例である。
　クランプ部材保持部１３５は、本発明の「凹部」に対応する構成の一例である。
　係合凹部１３５ａは、本発明の「規制部」に対応する構成の一例である。
　内側突出部１２１ｂは、本発明の「移動規制部材」に対応する構成の一例である。
　クランプシャフト保持部材１１３１は、本発明の「保持部材」に対応する構成の一例である。
　クランプ部材２３２は、本発明の「保持部材」に対応する構成の一例である。
　クランプ部材３３１は、本発明の「保持部材」に対応する構成の一例である。
　レバー部１５１、３５１は、本発明の「操作部材」に対応する構成の一例である。
　コイルバネ１５６，３５７は、本発明の「弾性部材」に対応する構成の一例である。
　可動ピン１５７，３５７は、本発明の「係合部材」に対応する構成の一例である。
　本体ハウジング１０１は、本発明の「作業工具本体」に対応する構成の一例である。
　クランプシャフト保持部材１１３１は、本発明の「螺合部材」に対応する構成の一例である。
　螺合部材２３１は、本発明の「螺合部材」に対応する構成の一例である。
　螺合部材２３１は、本発明の「カラー」に対応する構成の一例である。
　クランプ部材２３２は、本発明の「可動部材」に対応する構成の一例である。 (Correspondence between each component of the embodiment and each component of the present invention)
This embodiment shows an example for carrying out the present invention. Therefore, the present invention is not limited to the configuration of the present embodiment. The correspondence between each component of the present embodiment and each component of the present invention is shown below.
The electric vibration tool 100 is an example of a configuration corresponding to the “work tool” of the present invention.
The blade 200 is an example of a configuration corresponding to the “tip tool” of the present invention.
The spindles 120, 220, and 320 are an example of a configuration corresponding to the “first shaft” of the present invention.
The flanges 122, 222, and 322 are an example of a configuration corresponding to the “first clamp portion” of the present invention.
The clamp shafts 123, 223, 323, and 1123 are an example of a configuration corresponding to the “second shaft” of the present invention.
The clamp heads 124, 224, 324, and 1124 are an example of a configuration corresponding to the “second clamp portion” of the present invention.
The screwing member 131 is an example of a configuration corresponding to the “color” of the present invention.
The clamp member 132 is an example of a configuration corresponding to the “holding member” of the present invention.
The rotation transmission member 133 is an example of a configuration corresponding to the “rotation transmission member” of the present invention.
The clamp member holding portion 135 is an example of a configuration corresponding to the “concave portion” of the present invention.
The engaging recess 135a is an example of a configuration corresponding to the “regulator” of the present invention.
The inner protrusion 121b is an example of a configuration corresponding to the “movement restriction member” of the present invention.
The clamp shaft holding member 1131 is an example of a configuration corresponding to the “holding member” of the present invention.
The clamp member 232 is an example of a configuration corresponding to the “holding member” of the present invention.
The clamp member 331 is an example of a configuration corresponding to the “holding member” of the present invention.
The lever portions 151 and 351 are an example of a configuration corresponding to the “operation member” of the present invention.
The coil springs 156 and 357 are an example of a configuration corresponding to the “elastic member” of the present invention.
The movable pins 157 and 357 are an example of a configuration corresponding to the “engagement member” of the present invention.
The main body housing 101 is an example of a configuration corresponding to the “work tool main body” of the present invention.
The clamp shaft holding member 1131 is an example of a configuration corresponding to the “screwing member” of the present invention.
The screwing member 231 is an example of a configuration corresponding to the “screwing member” of the present invention.
The screwing member 231 is an example of a configuration corresponding to the “color” of the present invention.
The clamp member 232 is an example of a configuration corresponding to the “movable member” of the present invention.
　以上の発明の趣旨に鑑み、本発明に係る作業工具は、下記の態様が構成可能である。
（態様１）
「請求項１に記載の作業工具であって、
　前記第１シャフトと前記第２シャフトは、軸方向が互いに平行に配置されているとともに、前記第２シャフトは、前記第１シャフトの内側に配置されており、
　前記第２シャフトは、前記第２クランプ部とは反対側の先端が面取りされた面取り部を有することを特徴とする作業工具。」 In view of the gist of the above invention, the working tool according to the present invention can be configured in the following manner.
(Aspect 1)
“A work tool according to claim 1,
The first shaft and the second shaft are arranged in parallel to each other in the axial direction, and the second shaft is arranged inside the first shaft,
The work tool, wherein the second shaft has a chamfered portion having a chamfered tip on the side opposite to the second clamp portion. "
（態様２）
「請求項５に記載の作業工具であって、
　前記操作部材は、前記回転伝達部材に係合させた状態でユーザが回転させることにより、前記カラーを前記第１シャフトに対して回転させるように構成されていることを特徴とする作業工具。」 (Aspect 2)
“A work tool according to claim 5,
The operation tool is configured to rotate the collar with respect to the first shaft by being rotated by a user while being engaged with the rotation transmission member. "
（態様３）
「請求項６に記載の作業工具であって、
　前記移動規制部材が前記保持部材の前記第１シャフトの長軸方向への移動を規制することで、前記第２シャフトが前記保持部材に保持されるか、または、前記保持部材に保持された前記第２シャフトの保持が解除されるように構成されていることを特徴とする作業工具。」 (Aspect 3)
“A work tool according to claim 6,
The movement restricting member restricts the movement of the holding member in the longitudinal direction of the first shaft, so that the second shaft is held by the holding member or the holding member holds the holding shaft. A work tool configured to release the holding of the second shaft. "
（態様４）
「請求項１３に記載の作業工具であって、
　前記操作部材は、弾性部材と、前記弾性部材に付勢された係合部材とを有し、
　前記操作部材の収納位置において、前記係合部材が作業工具本体に係合するように構成されていることを特徴とする作業工具。」 (Aspect 4)
“A work tool according to claim 13,
The operation member includes an elastic member and an engagement member biased by the elastic member,
The work tool is configured so that the engagement member engages with the work tool main body at the storage position of the operation member. "
（態様５）
「態様４に記載の作業工具であって、
　前記操作部材には、前記弾性部材を収容する収容部が形成されていることを特徴とすることを特徴とする作業工具。」 (Aspect 5)
“A work tool according to aspect 4,
The operation tool is characterized in that a storage portion for storing the elastic member is formed. "
（態様６）
「態様４または５に記載の作業工具であって、
　前記操作部材は、当該操作部材を支持する支点から所定方向に延在する構成であり、
　前記弾性部材は、前記所定方向に沿って前記係合部材を付勢するように構成されていることを特徴とする作業工具。」 (Aspect 6)
"A work tool according to aspect 4 or 5,
The operation member is configured to extend in a predetermined direction from a fulcrum supporting the operation member,
The work tool, wherein the elastic member is configured to bias the engaging member along the predetermined direction. "
（態様７）
「請求項９～１６、態様４～６のいずれか１項に記載の作業工具であって、
　前記作業工具本体には、前記係合部材と係合可能な凹部が形成されていることを特徴とする作業工具。」 (Aspect 7)
“A work tool according to any one of claims 9 to 16 and embodiments 4 to 6,
The work tool main body is formed with a recess that can be engaged with the engagement member. "
１００　電動式振動工具
１０１　本体ハウジング
１０１ａ　係合凹部
１０２　駆動機構
１０３　工具保持機構
１０４　回転制御機構
１１０　モータ
１１１　出力軸
１１２　駆動軸
１１３　ベアリング
１１４　被駆動アーム
１１５　スピンドル接続部
１２０　スピンドル
１２０ａ　第１段付面
１２０ｂ　第２段付面
１２０ｃ　ネジ山
１２１　ガイド部材
１２１ａ　ガイド穴
１２１ｂ　内側突出部
１２１ｃ　外側突出部
１２２　フランジ
１２３　クランプシャフト
１２４　クランプヘッド
１３０　クランプシャフト保持機構
１３１　螺合部材
１３１ａ　ネジ山
１３２　クランプ部材
１３２ａ　傾斜面
１３２ｂ　凸部
１３３　回転力伝達部材
１３３ａ　本体部
１３３ｂ　係合穴
１３３ｃ　凸部
１３４　クランプシャフト挿入穴
１３５　クランプ部材保持部
１３５ａ　係合凹部
１３５ｂ　傾斜面
１３６　係合凹部
１４０　スラストピン
１４１　係合部
１４２　バネ受け部
１４３　コイルバネ
１４４　Ｏリング
１５０　カムレバー
１５１　レバー部
１５２　偏心部
１５３　旋回軸
１５４　旋回部材
１５５　Ｏリング
２００　ブレード
２０３　工具保持機構
２２０　スピンドル
２２０ａ　第１段付部
２２０ｂ　第２段付部
２２０ｃ　ネジ山
２２１　ガイド部材
２２２　フランジ
２２３　クランプシャフト
２２４　クランプヘッド
２３０　クランプシャフト保持機構
２３１　螺合部材
２３１ａ　ネジ山
２３２　クランプ部材
２３２ａ　傾斜面
２３２ｂ　凸部
２３２ｃ　移動規制部
２３３　回転伝達部材
２３３ａ　本体部
２３３ｂ　係合穴
２３４　クランプシャフト挿入穴
２３５　クランプ部材保持部
２３５ａ　係合凹部
２３５ｂ　傾斜面
２３６　係合凹部
３０３　工具保持機構
３０４　工具保持解除機構
３２０　スピンドル
３２０ａ　クランプ部材挿通孔
３２０ｂ　係合ピン挿通孔
３２２　フランジ
３２３　クランプシャフト
３３０　クランプシャフト保持機構
３３１　クランプ部材
３３１ａ　傾斜面
３３２　Ｏリング
３３３　環状部材
３３４　コイルバネ
３５０　カムレバー機構
３５１　レバー部
３５２　偏心部
３５３　旋回軸
３５６　コイルバネ
３５７　可動ピン
１１２３　クランプシャフト
１１２４　クランプヘッド
１１２５　ねじ部
１１３０　クランプシャフト保持機構
１１３１　クランプシャフト保持部材
１１３２　Ｏリング
１１３３　ねじ部
１１３４　溝部
１１３５　突出部 DESCRIPTION OF SYMBOLS 100 Electric vibration tool 101 Main body housing 101a Engaging recessed part 102 Drive mechanism 103 Tool holding mechanism 104 Rotation control mechanism 110 Motor 111 Output shaft 112 Drive shaft 113 Bearing 114 Driven arm 115 Spindle connection part 120 Spindle 120a First step surface 120b Second stepped surface 120c Thread 121 Guide member 121a Guide hole 121b Inner protrusion 121c Outer protrusion 122 Flange 123 Clamp shaft 124 Clamp head 130 Clamp shaft holding mechanism 131 Screwing member 131a Thread 132 Clamp member 132a Inclined surface 132b Convex Part 133 rotational force transmission member 133a body part 133b engagement hole 133c convex part 134 clamp shaft insertion hole 135 clamp member holding part 135a engagement concave part 135b inclined surface 136 Recess 140 Thrust pin 141 Engagement part 142 Spring receiving part 143 Coil spring 144 O-ring 150 Cam lever 151 Lever part 152 Eccentric part 153 Rotating shaft 154 Rotating member 155 O-ring 200 Blade 203 Tool holding mechanism 220 Spindle 220a First stepped part 220b First Two-stepped portion 220c Thread 221 Guide member 222 Flange 223 Clamp shaft 224 Clamp head 230 Clamp shaft holding mechanism 231 Screw member 231a Thread 232 Clamp member 232a Inclined surface 232b Protruding portion 232c Movement restricting portion 233 Rotation transmitting member 233a Main body portion 233b engagement hole 234 clamp shaft insertion hole 235 clamp member holding portion 235a engagement recess 235b inclined surface 236 engagement recess 303 tool holding mechanism 304 tool holding release mechanism 320 Spindle 320a Clamp member insertion hole 320b Engagement pin insertion hole 322 Flange 323 Clamp shaft 330 Clamp shaft holding mechanism 331 Clamp member 331a Inclined surface 332 O-ring 333 Coil spring 350 Cam lever mechanism 351 Lever portion 352 Eccentric portion 353 Swivel shaft 356 Coil spring 357 Movable pin 1123 Clamp shaft 1124 Clamp head 1125 Screw part 1130 Clamp shaft holding mechanism 1131 Clamp shaft holding member 1132 O-ring 1133 Screw part 1134 Groove part 1135 Projection part

Claims (16)

  1. 　着脱可能に装着される先端工具を駆動させる作業工具であって、
    　第１クランプ部を有する第１シャフトと、
    　第２クランプ部を有する第２シャフトとを有し、
    　前記第１クランプ部と前記第２クランプ部で先端工具を挟持するように構成されており、
    　前記第１シャフトと螺合可能なカラーと、
    　前記カラーと係合可能な保持部材とを有し、
    　前記第１シャフトに対して前記カラーが回転したときの前記第１シャフトの長軸方向への前記カラーの移動によって、前記保持部材が前記第２シャフトの径方向に移動して前記第２シャフトを保持するように構成されていることを特徴とする作業工具。     A work tool for driving a tip tool that is detachably mounted,
    A first shaft having a first clamp portion;
    A second shaft having a second clamp portion;
    It is comprised so that a tip tool may be pinched by the 1st clamp part and the 2nd clamp part,
    A collar screwable with the first shaft;
    A holding member engageable with the collar;
    When the collar rotates with respect to the first shaft, the holding member moves in the radial direction of the second shaft by the movement of the collar in the long axis direction of the first shaft. A work tool characterized by being configured to hold.
  2. 　請求項１に記載の作業工具であって、
    　前記カラーは、凹部を有しており、
    　前記保持部材は、前記凹部に配置されていることを特徴とする作業工具。     The work tool according to claim 1,
    The collar has a recess,
    The work tool, wherein the holding member is disposed in the recess.
  3. 　請求項１または２に記載の作業工具であって、
    　前記カラーは、前記第１シャフトの内側に配置されていることを特徴とする作業工具。     The work tool according to claim 1 or 2,
    The work tool according to claim 1, wherein the collar is disposed inside the first shaft.
  4. 　請求項１～３のいずれか１項に記載の作業工具であって、
    　前記第１シャフトに対して前記カラーを回転させる回転部材を有し、
    　前記保持部材は、前記第２シャフトを保持している状態において、前記第１シャフトの長軸方向に関して、前記カラーと前記回転部材に挟持されていることを特徴とする作業工具。     The work tool according to any one of claims 1 to 3,
    A rotating member that rotates the collar with respect to the first shaft;
    The work tool, wherein the holding member is sandwiched between the collar and the rotating member with respect to the longitudinal direction of the first shaft in a state where the second shaft is held.
  5. 　請求項４に記載の作業工具であって、
    　前記回転部材は、前記カラーに係合可能な回転伝達部材と、前記回転伝達部材に対して着脱可能に係合する操作部材とを有していることを特徴とする作業工具。     The work tool according to claim 4,
    The rotation tool includes a rotation transmission member that can be engaged with the collar, and an operation member that is detachably engaged with the rotation transmission member.
  6. 　請求項１～５のいずれか１項に記載の作業工具であって、
    　前記第１シャフトに対して前記カラーが回転して前記第１シャフトの長軸方向へ移動したときに、前記保持部材の前記第１シャフトの長軸方向への移動を規制する移動規制部材を有することを特徴とする作業工具。     The work tool according to any one of claims 1 to 5,
    A movement restricting member for restricting movement of the holding member in the long axis direction of the first shaft when the collar rotates relative to the first shaft and moves in the long axis direction of the first shaft; A work tool characterized by that.
  7. 　請求項１～６のいずれか１項に記載の作業工具であって、
    　前記カラーは、前記第２シャフトが挿入される穴部を有し、
    　前記第２シャフトは、前記穴部に挿入された状態で前記保持部材に保持されるように構成されており、
    　前記カラーは、前記第２シャフトが前記穴部に挿入されていない状態において、前記保持部材が前記穴部に移動することを規制する規制部を有することを特徴とする作業工具。     The work tool according to any one of claims 1 to 6,
    The collar has a hole into which the second shaft is inserted;
    The second shaft is configured to be held by the holding member in a state of being inserted into the hole portion,
    The collar has a restricting portion that restricts the holding member from moving to the hole when the second shaft is not inserted into the hole.
  8. 　請求項１～７のいずれか１項に記載の作業工具であって、
    　前記保持部材は単一の部材であることを特徴とする作業工具。     The work tool according to any one of claims 1 to 7,
    The work tool, wherein the holding member is a single member.
  9. 　着脱可能に装着される先端工具を駆動させる作業工具であって、
    　第１クランプ部を有する第１シャフトと、
    　第２クランプ部を有するとともに、前記第１シャフトに対して相対移動可能な第２シャフトとを有し、
    　前記第１クランプ部と前記第２クランプ部で先端工具を挟持するように構成されており、
    　前記第２シャフトに係合して前記第２シャフトを保持する保持部材と、
    　前記保持部材を前記第２シャフトに対して移動させる操作部材を有し、
    　前記操作部材の収納位置において、前記操作部材が作業工具本体に係合するように構成されていることを特徴とする作業工具。     A work tool for driving a tip tool that is detachably mounted,
    A first shaft having a first clamp portion;
    Having a second clamp part and having a second shaft movable relative to the first shaft;
    It is comprised so that a tip tool may be pinched by the 1st clamp part and the 2nd clamp part,
    A holding member that engages with the second shaft and holds the second shaft;
    An operation member for moving the holding member relative to the second shaft;
    A work tool, wherein the operation member is configured to engage with a work tool main body at the storage position of the operation member.
  10. 　請求項９に記載の作業工具であって、
    　前記操作部材は、弾性部材と、前記弾性部材に付勢された係合部材とを有し、
    　前記操作部材の収納位置において、前記係合部材が作業工具本体に係合するように構成されていることを特徴とする作業工具。     The work tool according to claim 9,
    The operation member includes an elastic member and an engagement member biased by the elastic member,
    The work tool is configured so that the engagement member engages with the work tool main body at the storage position of the operation member.
  11. 　請求項１０に記載の作業工具であって、
    　前記操作部材には、前記弾性部材を収容可能な収容部が形成されていることを特徴とする作業工具。     The work tool according to claim 10,
    The operation tool is formed with a storage portion capable of storing the elastic member.
  12. 　請求項１０または１１に記載の作業工具であって、
    　前記操作部材は、当該操作部材が支持される支点から所定方向に延在する構成であり、
    　前記弾性部材は、前記所定方向に沿って前記係合部材を付勢するように構成されていることを特徴とする作業工具。     The work tool according to claim 10 or 11,
    The operation member is configured to extend in a predetermined direction from a fulcrum on which the operation member is supported,
    The work tool, wherein the elastic member is configured to bias the engaging member along the predetermined direction.
  13. 　請求項９に記載の作業工具であって、
    　前記操作部材は、複数の方向に移動可能に構成されており、前記複数の方向のうちの少なくとも１つの方向への移動によって当該操作部材が収納される収納位置に配置可能に構成されており、
    　前記操作部材の収納位置において、前記操作部材が作業工具本体に係合するように構成されていることを特徴とする作業工具。     The work tool according to claim 9,
    The operation member is configured to be movable in a plurality of directions, and is configured to be disposed at a storage position in which the operation member is stored by movement in at least one of the plurality of directions.
    A work tool, wherein the operation member is configured to engage with a work tool main body at the storage position of the operation member.
  14. 　請求項９～１３のいずれか１項に記載の作業工具であって、
    　前記保持部材は、前記第１シャフトと前記第２シャフトのうちの少なくとも一方のシャフトと螺合可能な螺合部材を有し、
    　前記操作部材は、前記螺合部材を回動させるように構成されていることを特徴とする作業工具。     The work tool according to any one of claims 9 to 13,
    The holding member has a screwing member that can be screwed with at least one of the first shaft and the second shaft;
    The operating tool is configured to rotate the screwing member.
  15. 　請求項１４に記載の作業工具であって、
    　前記螺合部材は、前記第２シャフトと螺合して、当該第２シャフトを保持するように構成されていることを特徴とする作業工具。     The work tool according to claim 14,
    The work tool, wherein the screwing member is configured to be screwed with the second shaft to hold the second shaft.
  16. 　請求項１４に記載の作業工具であって、
    　前記螺合部材は、前記第１シャフトと螺合するカラーとして構成されており、
    　前記カラーに係合されて前記第２シャフトを保持可能な可動部材を有し、
    　前記第１シャフトに対して前記カラーが回転したときの前記第１シャフトの長軸方向への前記カラーの移動によって、前記可動部材が前記第２シャフトの径方向に移動して前記第２シャフトを保持するように構成されていることを特徴とする作業工具。     The work tool according to claim 14,
    The screwing member is configured as a collar screwed with the first shaft,
    A movable member engaged with the collar and capable of holding the second shaft;
    When the collar rotates with respect to the first shaft, the movable member moves in the radial direction of the second shaft due to the movement of the collar in the long axis direction of the first shaft. A work tool characterized by being configured to hold.
PCT/JP2013/056533 2012-03-12 2013-03-08 Work tool WO2013137155A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2012054248A JP5750073B2 (en) 2012-03-12 2012-03-12 Work tools
JP2012-054248 2012-03-12
JP2012095072A JP2013220515A (en) 2012-04-18 2012-04-18 Work tool
JP2012-095072 2012-04-18

Publications (1)

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JPH04781B2 (en) * 1984-02-18 1992-01-08 Tsuee Unto Ee Fuain Gmbh Unto Co
JPH04112766U (en) * 1991-03-20 1992-09-30 リヨービ株式会社 Tool attachment/detachment device
JPH07299743A (en) * 1994-05-10 1995-11-14 Ryobi Ltd Tool fastening device
JPH08510187A (en) * 1993-05-19 1996-10-29 アトラス・コプコ・ツールス・アクチボラグ Grinding wheel mounting device
US5601483A (en) * 1993-10-27 1997-02-11 C. & E. Fein Gmbh & Co. Power tool

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JPH04781B2 (en) * 1984-02-18 1992-01-08 Tsuee Unto Ee Fuain Gmbh Unto Co
JPH01193164A (en) * 1987-12-08 1989-08-03 Fein Verwaltung Gmbh Portable type machine tool with operating spindle having automatic locking action
JPH04112766U (en) * 1991-03-20 1992-09-30 リヨービ株式会社 Tool attachment/detachment device
JPH08510187A (en) * 1993-05-19 1996-10-29 アトラス・コプコ・ツールス・アクチボラグ Grinding wheel mounting device
US5601483A (en) * 1993-10-27 1997-02-11 C. & E. Fein Gmbh & Co. Power tool
JPH07299743A (en) * 1994-05-10 1995-11-14 Ryobi Ltd Tool fastening device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111645036A (en) * 2019-03-04 2020-09-11 株式会社牧田 Working tool
CN111645036B (en) * 2019-03-04 2023-09-29 株式会社牧田 Work tool

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