WO2013137155A1 - Outil de travail - Google Patents

Outil de travail 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
English (en)
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/ja
Priority claimed from JP2012095072A external-priority patent/JP2013220515A/ja
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/fr

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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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Portable Power Tools In General (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Abstract

[Problème] Fournir une technique améliorée se rapportant à un outil de travail dans laquelle un outil d'extrémité distale est entraîné. [Solution] Un outil de vibration alimenté électriquement (100) comprend une broche (120) comprenant une bride (122) et un arbre de serrage (123) comprenant une tête de serrage (124), et est configuré pour entraîner une lame (200) qui est serrée entre la bride (122) et la tête de serrage (124). L'outil de vibration alimenté électriquement (100) comprend un élément de vissage (131) qui se visse avec la broche (120), et un élément de serrage (132) qui est en prise avec l'organe de vissage (131). La configuration est telle que le déplacement de l'organe de vissage (131) dans le sens de l'axe longitudinal de la broche (120) lorsque l'élément de vissage (131) a tourné par rapport à la broche (120) provoque le déplacement de l'élément de serrage (132) dans la direction radiale de l'arbre de serrage (123) et retient l'arbre de serrage (123).
PCT/JP2013/056533 2012-03-12 2013-03-08 Outil de travail WO2013137155A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2012-054248 2012-03-12
JP2012054248A JP5750073B2 (ja) 2012-03-12 2012-03-12 作業工具
JP2012095072A JP2013220515A (ja) 2012-04-18 2012-04-18 作業工具
JP2012-095072 2012-04-18

Publications (1)

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WO2013137155A1 true WO2013137155A1 (fr) 2013-09-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111645036A (zh) * 2019-03-04 2020-09-11 株式会社牧田 作业工具

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01193164A (ja) * 1987-12-08 1989-08-03 Fein Verwaltung Gmbh 自動ロック作用をもつ作動スピンドルを具備する可搬形工作機械
JPH04781B2 (fr) * 1984-02-18 1992-01-08 Tsuee Unto Ee Fuain Gmbh Unto Co
JPH04112766U (ja) * 1991-03-20 1992-09-30 リヨービ株式会社 工具の着脱装置
JPH07299743A (ja) * 1994-05-10 1995-11-14 Ryobi Ltd 工具の締付装置
JPH08510187A (ja) * 1993-05-19 1996-10-29 アトラス・コプコ・ツールス・アクチボラグ 研削砥石の取付装置
US5601483A (en) * 1993-10-27 1997-02-11 C. & E. Fein Gmbh & Co. Power tool

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04781B2 (fr) * 1984-02-18 1992-01-08 Tsuee Unto Ee Fuain Gmbh Unto Co
JPH01193164A (ja) * 1987-12-08 1989-08-03 Fein Verwaltung Gmbh 自動ロック作用をもつ作動スピンドルを具備する可搬形工作機械
JPH04112766U (ja) * 1991-03-20 1992-09-30 リヨービ株式会社 工具の着脱装置
JPH08510187A (ja) * 1993-05-19 1996-10-29 アトラス・コプコ・ツールス・アクチボラグ 研削砥石の取付装置
US5601483A (en) * 1993-10-27 1997-02-11 C. & E. Fein Gmbh & Co. Power tool
JPH07299743A (ja) * 1994-05-10 1995-11-14 Ryobi Ltd 工具の締付装置

Cited By (2)

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

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