JP2009136977A - Rotary tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To rotate a rotating shaft body without re-gripping a holding body by a simple configuration. <P>SOLUTION: This rotary tool comprises a driver shaft 2 which is vertically movably and rotatably engaged with a grip body 1 to receive the biasing force of a coiled spring 3 and which has a spiral groove part 5 brought into contact with the projection parts 10a-10d of the engagement member 7 of a driver shaft installed in the grip body 1. The driver shaft 2 is rotated while being vertically moved by the biasing force of the coiled spring 3 and an external force applied to the grip body 1. Also, the rotary tool comprises a fixed button 4 for stopping the rotation of the driver shaft 2 at the position apart a length of 1/3 of the overall length of the grip from an opening part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rotary tool suitable for application to a drill or a driver. Specifically, the rotary shaft is engaged with the gripping body so as to be able to move up and down and rotate so as to receive the biasing force of the biasing member, and has a spiral groove that comes into contact with the protrusion of the gripping body. The rotating shaft body is rotated with vertical movement by the urging force of the urging member and the external force applied to the gripping body, so that the rotating shaft body can be rotated without re-gripping the gripping body with a simple configuration. In addition, the work load during work can be reduced.

  Conventionally, drills and drivers have been used for drilling and screwing processed materials. In particular, in the case of a large amount of drilling or screwing work, the operator's hand gets tired, so ratchet type or electric type has been used.

  The ratchet type driver includes a grip body, a rotation shaft, and a ratchet mechanism, and a rotation shaft that is rotatably attached to the grip body via the ratchet mechanism is configured to attach and detach screws by repetitive operations of the grip body. For example, a screw is applied to a member to be mounted via a mounting member, a ratchet screwdriver tip is brought into contact with the positive groove of this screw, and the grip body is manually rotated in the screw tightening direction to rotate the rotating shaft. By rotating the grip body in reverse without gripping the body, only the grip body rotates without rotating the rotating shaft. This repetitive motion enables the screws to be tightened without re-gripping the grip body.

  The electric driver includes a grip body, a rotation shaft, and a drive unit, and the rotation shaft is rotatably attached to the grip body through the drive unit. For example, a screw is applied to a member to be mounted via a mounting member, the tip of an electric plus driver is brought into contact with the positive groove of the screw, and the screw is tightened by rotating the rotating shaft in the screw tightening direction by the drive unit. It is done.

  In relation to such a driver, Patent Document 1 discloses a manual driver. According to this manual driver, a colored bar for rotating operation is provided at the proximal end of the handle so as to protrude in a direction crossing the axial direction of the handle. As a result, the drivers can be color-coded according to their types and applications via the bar, so that the necessary drivers can be identified at a glance from the appearance.

  Further, Utility Model Document 1 discloses a driver. According to this driver, the ratchet mechanism 2 is accommodated in the rear stage of the handle 1, and the connecting rod 22 of the ratchet mechanism 2 accommodated in the handle 1 is extended so as to hold a considerable length. The long tool head can obtain a deeper bond length. As a result, since the overall length does not become longer after the coupling, stable coupling and convenience for carrying can be improved.

  Furthermore, Utility Model Document 2 discloses a manual drill driver. According to the manual type drill driver, the forward and reverse pinion gears 6 are engaged with both sides of the rack gear 5 reciprocated in a limited space by the action of the cantilevers 3 and 4 provided in a cross shape. Each is provided with a second gear 7 that is coaxial and directly connected, and a third (one-way clutch) gear 8 is engaged therewith, and a pushing piece 36 is provided at the lower part of both third gears. The four gears 9 are freely provided in the axial direction with the opposite one-way clutch teeth facing each other. The fourth gears mesh with the fifth gear and the sixth gear 11 coaxial with the fifth gear 10. The drive shaft 13 is driven by the meshed seventh gear 12, a one-way mechanism is provided in the middle of the drive shaft, and the one-way clutch gear is selected by the select mechanism. Controls are made to switch the direction of rotation. This structure is compact and has excellent portability.

JP 2001-105336 A (2nd page, FIG. 1) No. 3078309 (2nd page, Fig. 1) No. 3075680 (5th page, Fig. 1)

By the way, according to the drill and the driver according to the conventional example, as seen in Patent Document 1 and Utility Model Documents 1 and 2, there are the following problems.
i) Since the ratchet type driver is provided with a complicated ratchet structure, the driver body becomes heavy, so that a burden is imposed when carrying it, and the degree of fatigue increases during work.
ii) A power source type electric driver requires a power source nearby, and the cord length is about 10 m, so the place of use is limited. In addition, since the cordless electric driver is equipped with a battery, the main body has a weight of about 1.5 kg, which is inconvenient for carrying. Moreover, if it is electric, there is a risk that the cord may interfere with work, or an accident may occur due to someone else's foot getting caught in the cord. If it is a battery type, the battery will run out during the work, and the work may be interrupted.

  Therefore, the present invention solves such a problem related to the conventional example, and the driver's structure is devised so that the driver's shaft can be rotated without re-gripping the driver's grip. An object of the present invention is to provide a rotating tool having a configuration.

  In order to solve the above-described problem, the rotary tool according to claim 1 is a rotary tool having a rotary shaft body having one end serving as an action portion, having an opening at one end and a predetermined shape at the other end. And a holding body having a protrusion inside the hollow, and a biasing member that is inserted from the opening and attached to the inside of the holding body, and applies a biasing force to the rotating shaft body, A rotary shaft body that is engaged with the gripping main body so as to receive a biasing force of the biasing member so as to be movable up and down and rotatable, and that has a spiral groove that comes into contact with the protrusion. The rotating shaft body is rotated with vertical movement by an urging force by the urging member and an external force applied to the gripping main body.

  According to the rotary tool of the present invention, the rotary shaft body is engaged with the gripping body so as to be movable up and down and rotatable so as to receive the biasing force of the biasing member, and contacts the protrusion of the gripping body. It has a spiral groove portion in contact with it, and rotates with vertical movement by an urging force by the urging member and an external force applied to the gripping body.

  Thereby, it is possible to rotate the rotary shaft body without re-gripping the grip body with a simple configuration.

  According to the rotary tool of the present invention, the spiral tool is engaged with the gripping body so as to be movable up and down and rotatable so as to receive the biasing force of the biasing member, and is in contact with the protrusion of the gripping body. The rotary shaft body is provided with a vertical movement due to an urging force by the urging member and an external force applied to the gripping body.

  With this configuration, it is possible to rotate the rotating shaft body without re-gripping the grip body with a simple configuration. Therefore, since it is reduced in weight, it is excellent in portability, and the work load at the time of work can be reduced.

  Subsequently, a rotary tool according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a configuration example of a driver 100 as a first embodiment according to the present invention. A driver 100 shown in FIG. 1 is an example of a rotary tool, and has a rotary shaft body with one end serving as a working portion, and includes a grip body 1, a driver shaft 2, a coil spring 3 (shown in FIG. 2), and a fixed button. 4 is provided.

  The grip body 1 is an example of a grip body, and has a first opening 18 at one end, a closed end at the other end, and a protrusion in a hollow interior. The grip body 1 is an injection mold product of an insulating material such as plastic.

  The driver shaft 2 is an example of a rotating shaft body, and is engaged with the grip body 1 so as to be movable up and down and rotatable so as to receive an urging force of the coil spring 3.

  The fixed button 4 is an example of a rotation stop member, and is provided at a position one-third of the entire grip length from the opening 18 when the entire length from the opening 18 of the grip body 1 to the other end that is closed is defined as the grip total length. The rotation of the driver shaft 2 is stopped. For example, when unscrewing a screw that has been screwed, the rotational force in the first releasing direction requires a large force, so the fixing button 4 is pressed to fix the driver shaft 2 and the wrist is rotated. Loosen the screws slightly. Thereafter, the screw is completely unscrewed using the biasing force of the compressed coil spring 3.

  FIG. 2 is a cross-sectional view showing a configuration example of the driver 100 when the coil spring 3 is extended. A grip body 1 shown in FIG. 2 includes a cylindrical driver shaft engaging member 7.

  The cylindrical engaging member 7 includes a driver shaft retaining portion 9, projections 10a to 10d, a bottom lid 11, a first opening 19a, and a second opening 19b. The bottom surface of the engaging member 7 is closed with a bottom lid 11.

  The driver shaft retaining portion 9 is located on the rear end retaining portion 8 of the driver shaft 2 at a position about one third from the opening 19a when the length from the opening 19a to the bottom of the engaging member 7 is the entire length of the engaging member. It is formed on the inner surface so as to be caught, and the driver shaft 2 is prevented from coming out of the engaging member 7.

  The protrusions 10a to 10d are formed on the inner surface so that the driver shaft 2 rotates with the vertical movement of the driver shaft 2 in contact with the groove portion 5 formed on the driver shaft 2. For example, the four projecting portions 10a to 10d are provided on the front surface of the projecting portion 10b and the projecting portion 10a in the vicinity of the opening 19a, the projecting portion 10b positioned about one-sixth of the entire length of the engaging member from the projecting portion 10a. The protruding portion 10c is positioned and the protruding portion 10d is located about one-sixth below the protruding portion 10c.

  The opening 19a is formed by opening the top surface of the cylindrical engagement member 7. The opening 19b is opened to be provided with the fixing button 4 at a position below the opening 19a by about one-sixth of the entire length of the engaging member, and is a cylinder protruding in a direction perpendicular to the axial direction. It has a shape part.

  The coil spring 3 is an example of an urging member, is inserted with the bottom lid 11 open, is attached to the inside of the engaging member 7 of the grip body 1, and applies an urging force to the driver shaft 2. In order to reduce friction between the driver shaft 2 and the coil spring 3, a spherical intermediate member 6 is provided between the driver shaft 2 and the coil spring 3.

  The driver shaft 2 has a spiral groove portion 5 that is in contact with the protrusions 10 a to 10 d inside the engaging member 7, and moves up and down by an urging force of the coil spring 3 and an external force applied to the grip body 1. Rotate with it. Thereby, the driver shaft 2 can be rotated without re-gripping the grip body 1 with a simple configuration. Furthermore, since a power source is not required by a manual method, the degree of freedom of work is improved. Furthermore, since a battery is not necessary, it is lightweight and can be used for a long time.

  FIG. 3 is a partially enlarged cross-sectional view of a configuration example of the driver 100 when the coil spring 3 is extended. The fixed button 4 shown in FIG. 3 is movably attached to the opening 19b. When the rotation of the driver shaft 2 is stopped, the fixed button 4 is pressed. As a result, the rotation stopping rubber 17 attached to the tip of the fixed button 4 is brought into contact with the driver shaft 2 and the rotation of the driver shaft 2 is stopped by the pressure of the rubber.

  FIG. 4 is a cross-sectional view illustrating a configuration example of the driver 100 when the coil spring 3 is compressed. The driver shaft 2 shown in FIG. 4 tightens the screw while the driver shaft 2 rotates clockwise, for example, when an operator applies the tip of the driver shaft 2 to the screw head and presses the grip body 1 in the screw tightening direction. At the same time, the driver shaft 2 is wound inside the grip body 1 and the coil spring 3 is compressed. In a compressed state, the rotation of the driver shaft 2 is stopped by the fixed button 4.

  FIG. 5 is a partially enlarged cross-sectional view of a configuration example of the driver 100 when the coil spring 3 is compressed. The fixed button 4 shown in FIG. 5 is in a state in which the urging force of the compressed coil spring 3 is stopped by the operator pressing the fixed button 4 to stop the rotation of the driver shaft 2.

  When the pressed fixed button 4 is released, the driver shaft 2 receives the urging force of the coil spring 3 through the intermediate member 6 and reaches a position where the rear end retaining portion 8 of the driver shaft 2 contacts the driver shaft retaining portion 9. Rotate counterclockwise and move to the outside of the grip body 1.

  6A and 6B are explanatory diagrams illustrating a configuration example of the driver shaft 2. The driver shaft 2 shown in FIG. 6A is a front view. The driver shaft 2 is a metal molded product, and a groove portion 5 is formed in a spiral shape around the entire length of the driver shaft 2, a plus-shaped action portion 20 is formed at the tip, and a rear end stopper is provided at the rear end. Part 8 is formed.

  For example, the shape of the action portion 20 of the driver shaft 2 is a plus shape, and a minus shape, a drill shape, or the like can be attached. In addition, for example, if a driver shaft that is not shown is replaceable, the bit of the driver shaft can be replaced by mounting the bit having the above-described shape on the bit mounting portion of the driver shaft.

  The depth of the groove 5 is about 1 to 3 mm, and the angle of the groove 5 is about 45 to 65 degrees with respect to a plane perpendicular to the axial direction of the driver shaft 2. This angle is set so that the driver shaft 2 rotates smoothly with the vertical movement using the pressing force in the axial direction of the driver shaft 2 and the biasing force of the coil spring 3. The driver shaft 2 may be formed by twisting a flat bar. The driver shaft 2 shown in FIG. 6B is a top view. The shape of the action part 20 is a plus shape.

  FIG. 7 is an explanatory view showing an example in which the driver shaft 2 is attached to the engaging member 7. In the driver shaft 2 shown in FIG. 7, the rear end retaining portion 8 of the driver shaft 2 is caught by the driver shaft retaining portion 9 of the engaging member 7 from the side where the bottom lid 11 of the engaging member 7 is attached toward the opening 19 a. Up to this point, the protrusions 10a to 10d are brought into contact with the groove portion 5 and are inserted while rotating counterclockwise. Subsequently, the spherical intermediate member 6 and the coil spring 3 are movably attached from the same direction, and finally, the bottom lid 11 is welded to the bottom of the engaging member 7 by spot welding (resistance welding).

  FIG. 8 is an explanatory view showing an example in which the fixing button 4 is attached to the engaging member 7. The fixed button 4 shown in FIG. 8 includes a stopper 12, a spring 13, a button portion 14 with a stopper, a lid 15 with an opening, a button lid 16, and a rotation stopping rubber 17. The stopper 12 is attached to the stopper retaining portion 21 formed in the opening 19b, and then the stopper 13 with the spring 13 and the rotation stopping rubber 17 is attached, and the lid 15 with the opening is attached to the opening 19b by spot welding. Finally, the button lid 16 is attached to the button portion 14 with a stopper.

  Subsequently, an operation example of the driver 100 will be described with reference to FIGS. 9A to 9C are process diagrams illustrating an operation example (part 1) of screw tightening of the driver 100. For example, a series of operations when the screw 30 is tightened on wood or the like is shown. In the driver 100 shown in FIG. 9A, the action portion 20 of the driver shaft 2 is in contact with the screw head of the screw 30 in a state where the coil spring 3 is extended (see FIG. 2). The tip of the screw 30 is in contact with the wood. In this state, the operator holds the grip body 1 of the driver 100 and presses it in the axial direction P of the driver shaft 2 without rotating the grip body 1.

  After the grip body 1 is pressed in the axial direction P, the driver shaft 2 shown in FIG. 9B is rotated clockwise by a predetermined number by the protrusions 10a to 10d inside the grip body 1 in contact with the groove portion 5 formed in a spiral shape. The coil spring 3 is compressed while being wound inside. At this time, the screw 30 in contact with the action portion 20 of the driver shaft 2 is screwed into the wood by about half of the entire length of the screw 30 by the driver shaft 2 rotated to the right by a predetermined number.

  From this state, the grip body 1 is further pressed in the axial direction P. As a result of further pressing, the driver 100 shown in FIG. 9C is wound inside while the driver shaft 2 is rotated clockwise by a predetermined number, and the coil spring 3 is completely compressed as shown in FIG. At this time, the screw 30 is completely screwed into the wood by the driver shaft 2 rotated to the right. In this way, the driver shaft 2 can be rotated without twisting the grip body 1 and the screw 30 can be twisted and fixed to wood or the like.

  10A to 10E are process diagrams illustrating an operation example (part 2) of screw tightening of the driver 100. For example, a series of operations when the screw 31 is fastened to wood or the like is shown. The total length of the screw 31 is slightly longer than the total length of the screw 30. In the driver 100 shown in FIG. 10A, the action portion 20 of the driver shaft 2 is in contact with the screw head of the screw 31 with the coil spring 3 extended. The tip of the screw 31 is in contact with the wood. In this state, the operator holds the grip body 1 of the driver 100 and presses the grip body 1 in the axial direction P of the driver shaft 2 without rotating the grip body 1.

  After the grip body 1 is pressed in the axial direction P, the driver shaft 2 shown in FIG. 10B is rotated to the right by a predetermined number by the protrusions 10a to 10d inside the grip body 1 that is in contact with the groove portion 5 formed in a spiral shape. The coil spring 3 is completely compressed while being wound inside. When the coil spring 3 is completely compressed, the screw 31 in contact with the action portion 20 of the driver shaft 2 is twisted into wood by about two-thirds of the total length of the screw 31 by the driver shaft 2 rotated to the right by a predetermined number. Is included. At this time, about one third of the screw 31 remains, but since the coil spring 3 is completely compressed, the grip body 1 cannot be pressed further in the axial direction P. In this case, the operator presses the fixed button 4 while the coil spring 3 is compressed. When the fixed button 4 is pressed, the rotation stopping rubber 17 attached to the tip of the fixed button 4 is brought into contact with the driver shaft 2 and the rotation of the driver shaft 2 is stopped by the pressure of the rubber. After the rotation of the driver shaft 2 stops, as shown in FIG. 10C, the operator once pulls the action portion 20 of the driver shaft 2 away from the screw head of the screw 31 in a state where the rotation of the driver shaft 2 is stopped.

  After the action part 20 is pulled away from the screw 31, the operator releases the pressing of the fixed button 4. When the pressing of the fixed button 4 is released, as shown in FIG. 10D, the driver shaft 2 moves to the outside while rotating counterclockwise by the urging force of the compressed coil spring 3, and returns to the initial state of FIG. 10A. .

  After the driver shaft 2 is extended, the operator again contacts the operating portion 20 of the driver shaft 2 with the screw head of the screw 31 that is twisted halfway to rotate the grip body 1 in the axial direction P without rotating the grip body 1. Press. After pressing the grip body 1 in the axial direction P, the driver shaft 2 shown in FIG. 10E is wound inside while being rotated clockwise, and the coil spring 3 is compressed by about half. At this time, the screw 31 in contact with the action portion 20 of the driver shaft 2 is completely screwed into the wood by the driver shaft 2 rotated to the right by a predetermined number. In this way, the fixing button 4 can be used for the screw 31 having a long overall length, and the screw 31 can be twisted and fixed to wood or the like by rotating the driver shaft 2 without re-gripping the grip body 1.

  FIGS. 11A to 11E are process diagrams showing an example of screw loosening operation of the driver 100. The driver 100 shown in FIG. 11A is in an initial state where no external force is applied. The driver 100 illustrated in FIG. 11B is stopped in a state where the driver shaft 2 of the driver 100 illustrated in FIG. 11A is contracted. For example, as shown in FIG. 9C, the grip body 1 is pressed in the axial direction P of the driver shaft 2 in a state where the action portion 20 of the driver shaft 2 is in contact with the screw 30, and the driver shaft 2 is rotated clockwise. However, it is wound inside and shrunk. After the driver shaft 2 is contracted, the fixing button 4 is pressed and the rotation of the driver shaft 2 is stopped.

  In the driver 100 shown in FIG. 11C, the action portion 20 of the driver shaft 2 of the driver 100 in FIG. 11B is in contact with a screw 30 twisted on wood or the like. At this time, the fixed button 4 is pushed and the rotation of the driver shaft 2 is stopped.

  The driver 100 shown in FIGS. 11D and 11E is one in which the pressing of the fixed button 4 of the driver 100 of FIG. 11C is released. The driver shaft 2 of the driver 100 is pushed out in the axial direction P by the urging force of the compressed coil spring 3 and left by the projecting portions 10a to 10d inside the grip body 1 in contact with the groove portion 5 formed in a spiral shape. Move to the outside while being rotated. At this time, the screw 30 in contact with the action portion 20 of the driver shaft 2 is loosened from the wood by the driver shaft 2 rotated counterclockwise. As a result, the driver shaft 2 can be rotated and the screw 30 can be loosened and extracted from the wood or the like without re-gripping the grip body 1.

  As described above, according to the driver 100 as the first embodiment of the present invention, the grip body 1 is engaged with the grip body 1 so as to receive the urging force of the coil spring 3 so as to be movable up and down and rotatable. A driver shaft 2 having a spiral groove 5 abutting against the protrusions 10 a to 10 d of the engaging member 7 provided in the main body 1 is provided. The driver shaft 2 is applied to the urging force of the coil spring 3 and the grip main body 1. Rotates with vertical movement by external force applied.

  Thereby, the driver shaft 2 can be rotated without re-gripping the grip body 1 with a simple configuration. Therefore, since it is reduced in weight, it is excellent in portability, and the work load at the time of work can be reduced.

  FIG. 12 is a cross-sectional view showing a configuration example of a driver 200 as a second embodiment according to the present invention. A driver 200 shown in FIG. 12 includes a driver shaft 32, a rotating member 33, a cover 34, a pressing member 35, a driver shaft engaging member 36, a grip body 37, and a coil spring 38. An engagement member 36 is provided inside the grip body 37, and a coil spring 38 is installed on the bottom inside the engagement member 36. A rotating member 33 is installed so as to move up and down and rotate so as to receive the biasing force of the coil spring 38. The rotating member 33 has a spiral groove 41. The depth of the groove part 41 is about 1 to 3 mm, and the angle of the groove part 41 is about 45 to 65 degrees with respect to a plane perpendicular to the rotation axis direction of the rotating member 33. The engaging member 36 has protrusions 40 a to 40 f that are in contact with the groove 41.

  The external force applied to the grip body 37 and the urging force by the coil spring 38 are applied in a state where the protrusions 40a to 40f are in contact with the groove portion 41 of the spirally formed rotary member 33, whereby the rotary member 33 moves up and down. Rotate with movement. Thus, the driver shaft 32 engaged with the rotating member 33 can be rotated without re-gripping the grip body 37 with a simple configuration.

  The engaging member 36 is made of a material such as resin and has a concave portion 39 for bending. The grip body 37 has an opening 48 where the recess 39 is located. A pressing member 35 is installed in the opening 48. The pressing member 35 is fixed by a cover 34. The pressing member 35 is preferably made of a flexible material such as rubber. When the pressing member 35 is pressed from above the cover 34, the recess 39 is pressed by the pressing member 35 and the recess 39 is slightly bent. As a result, a pressing force is transmitted to the protrusions 40e and 40f of the engaging member 36, and friction is generated in the groove 41 of the rotating member 33 abutted against the protrusions 40e and 40f, so that the rotation of the rotating member 33 occurs. Can be stopped.

  13A and 13B are explanatory diagrams illustrating a configuration example of the driver shaft 32. FIG. FIG. 13A is a front view of the driver shaft 32. The driver shaft 32 shown in FIG. 13A is a molded product made of a metal material. A plus-shaped action portion 42 is formed at one end, and a minus-shape action portion 43 is formed at the other end. The driver shaft 32 has a shaft fixing portion 44 formed in the vicinity of each of the action portions 42 and 43. The shaft fixing portion 44 is used for fixing the driver shaft 32 to the rotating member 33 shown in FIG.

  13B is a cross-sectional view of the driver shaft 32 shown in FIG. The cross-sectional shape of the driver shaft 32 shown in FIG. 13B is a hexagon. The driver shaft 32 is fixed to the rotating member 33 using this shape.

  14A and 14B are explanatory views showing a configuration example of the rotating member 33. FIG. A rotating member 33 shown in FIG. 14A has an insertion hole 45 and a fixing portion 46 of the driver shaft 32. The insertion hole 45 is provided so that the inside of the rotating member 33 is penetrated in the longitudinal direction. The shape of the insertion hole 45 is hexagonal, and the size of the insertion hole 45 is designed to be slightly larger than the outer periphery of the driver shaft 32 shown in FIG. 13A. The driver shaft 32 is inserted into the insertion hole 45. A fixing portion 46 is provided in the vicinity of the tip of the insertion hole 45. FIG. 14B is a front view of arrow Y showing a configuration example of the rotating member 33, and a small ball 47 is attached to the fixing portion 46 shown in FIG. 14B. For example, a spherical through hole is provided in the fixed portion 46, and a small ball 47 is attached to the through hole. The mounted small balls 47 are engaged with the shaft fixing portion 44 of the driver shaft 32.

  For example, when the driver shaft 32 is inserted into the insertion hole 45 of the rotating member 33, the small balls 47 are once lifted by the outer peripheral surface of the driver shaft 32. When the driver shaft 32 is further inserted into the insertion hole 45, the raised small balls 47 fall into the concave shaft fixing portion 44 of the driver shaft 32. In this way, the driver shaft 32 is fixed to the rotating member 33.

  Further, when the driver shaft 32 is removed from the rotating member 33, the driver shaft 32 inserted into the insertion hole 45 is pulled out from the rotating member 33. When the driver shaft 32 is pulled out, the small balls 47 that have fallen into the concave shaft fixing portion 44 of the driver shaft 32 are once lifted by the outer peripheral surface of the driver shaft 32. When the driver shaft 32 is pulled out from the rotating member 33 to the end while the small balls 47 are lifted, the small balls 47 return to the original positions of the spherical through holes. In this way, the driver shaft 32 is removed from the rotating member 33.

  15A and 15B are process diagrams illustrating an operation example of the driver 200. The driver 200 shown in FIG. 15A is in an initial state where no external force is applied. That is, the rotating member 33 is positioned at the uppermost part of the engaging member 36 in a state where the coil spring 38 is extended. The driver 200 shown in FIG. 15B is in a state where the external force is applied to the driver 200 of FIG. 15A and the rotating member 33 moves to the lowermost part of the engaging member 36 and the coil spring 38 is completely compressed.

  For example, the grip body 37 is pressed in the axial direction P of the driver shaft 32 in a state where the action portion 42 of the driver shaft 32 is in contact with the screw 30 shown in FIG. At the same time, the driver shaft 32 engaged with the rotating member 33 is retracted. When the pressing member 35 is pressed after the driver shaft 32 is contracted, the concave portion 39 is pressed by the pressing member 35 and the concave portion 39 is slightly bent. As a result, a pressing force is transmitted to the protrusions 40e and 40f of the rotating member 33, and friction is generated in the groove 41 of the rotating member 33 in contact with the protrusions 40e and 40f, thereby rotating the rotating member 33. Can be stopped.

  Thus, according to the driver 200 as the second embodiment of the present invention, the grip body 37 is engaged with the grip body 37 so as to receive the urging force of the coil spring 38 so as to be movable up and down and rotatable. A driver shaft 32 that includes a rotating member 33 having a spiral groove 41 that abuts against the protrusions 40 a to 40 f of the engaging member 36 provided in the main body 37, and the driver shaft 32 engaged with the rotating member 33 includes a coil spring 38. Rotating with vertical movement by the urging force by and the external force applied to the grip body 37. In this example, the pressing member 35 is provided, and when the pressing member 35 is pressed, the concave portion 39 of the engaging member 36 is bent and friction is generated in the groove portion 41 of the rotating member 33.

  Accordingly, the driver shaft 32 engaged with the rotating member 33 can be rotated without re-gripping the grip body 37 with a simple configuration, and the rotation of the driver shaft 32 can be temporarily stopped by the pressing member 35.

  FIG. 16 is a cross-sectional view showing a configuration example of a driver 300 as a third embodiment according to the present invention. The driver 300 shown in FIG. 16 includes a driver shaft 32, a coil spring 38, a rotating member 53, a hexagonal member 54, a spring 55, a driver shaft engaging member 56, a grip body 57, a first stopper 59a, and a second stopper 59b. Is provided. The same members as those of the driver 200 shown in the second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  An engagement member 56 is provided inside the grip body 57, and a coil spring 38 is installed on the bottom inside the engagement member 56. A rotating member 53 is installed so as to move up and down and rotate so as to receive the biasing force of the coil spring 38. The rotating member 53 has a spiral groove 41. The engaging member 56 has protrusions 40 a to 40 f that are in contact with the groove 41.

  The external force applied to the grip body 57 and the urging force by the coil spring 38 are applied in a state where the protrusions 40a to 40f are in contact with the groove portion 41 of the spirally formed rotary member 53, whereby the rotary member 53 is moved up and down. Rotate with movement. Accordingly, the driver shaft 32 engaged with the rotating member 53 can be rotated without re-gripping the grip body 57 with a simple configuration.

  The engaging member 56 has an opening 61 at the bottom. A hexagonal member 54 is inserted into the opening 61. The hexagonal member 54 is inserted from the bottom of the grip body 57, and the first stopper 59a is fixed at a predetermined position of the hexagonal member 54. The hexagonal member 54 is retained by the stopper 59a so as not to come out of the grip body 57. One end of a spring 55 is engaged with the stopper 59a, and the second stopper 59b is engaged with the other end of the spring 55. The stopper 59 b prevents the spring 55 from entering the opening 61 of the engaging member 56.

  When the hexagonal member 54 is pushed in the arrow direction Q, the spring 55 is pushed by the stopper 59a and contracts, and the hexagonal member 54 further enters the engagement member 56. When the tip of the hexagonal member 54 is inserted into the hexagonal hole at the bottom of the rotating member 53 after entering, the rotation of the rotating member 53 stops. As described above, the driver 300 is configured to have a function of stopping the rotation of the rotating member 53.

  17A and 17B are explanatory diagrams showing a configuration example of the hexagonal member 54. FIG. 17A is a front view of the hexagonal member 54. A push button 54a is provided at one end of the hexagonal member 54 shown in FIG. 17A. The push button 54 a is pushed when the hexagonal member 54 is inserted into the engagement member 56.

  17B is a cross-sectional view of the hexagonal member 54 as viewed in the direction of arrows WW shown in FIG. 17A. The shape of the stopper 59a fixed to the hexagonal member 54 shown in FIG. 17B is a square, and this stopper 59a is fixed to the grip body 57 so as not to rotate. The cross-sectional shape of the hexagonal member 54 is a hexagon and is the same shape as the cross-sectional shape of the driver shaft 32. Similar to the driver shaft 32, the hexagonal member 54 is inserted into the hexagonal hole of the rotating member 53.

  18A and 18B are explanatory views showing a configuration example of the rotating member 53. FIG. The rotating member 53 illustrated in FIG. 18A includes an insertion hole 62 and a fixing portion 46. The insertion hole 62 is provided through the inside of the rotating member 53 in the longitudinal direction. The shape of the insertion hole 62 is hexagonal, and the size of the insertion hole 62 is designed to be slightly larger than the outer periphery of the hexagonal member 54 shown in FIG. 17A. The driver shaft 32 is inserted into the distal end side of the insertion hole 62, and the hexagonal member 54 is inserted into the rear end side of the insertion hole 62. A fixing portion 46 is provided on the distal end side of the insertion hole 62, and a small ball 47 is attached to the fixing portion 46.

  FIG. 18B is a rear view of arrow Z showing a configuration example of the rotating member 53. As shown in FIG. 18B, the hexagonal insertion hole 62 of the rotating member 53 passes therethrough. The hexagonal member 54 is inserted into the hexagonal insertion hole 62. Thereby, since the hexagonal member 54 fixed to the grip body 57 so as not to rotate and the rotation member 53 are connected, the rotation of the rotation member 53 can be stopped by the hexagonal member 54.

  FIGS. 19A and 19B are process diagrams illustrating an operation example of the driver 300. The driver 300 shown in FIG. 19A is in an initial state where no external force is applied. That is, the rotating member 53 is positioned on the uppermost part of the engaging member 56 in a state where the coil spring 38 is extended. The driver 300 shown in FIG. 19B is in a state where the external force is applied to the driver 300 of FIG. 19A and the rotating member 53 moves to the lowermost part of the engaging member 56 and the coil spring 38 is completely compressed.

  For example, the grip main body 57 is pressed in the axial direction of the driver shaft 32 in a state where the action portion 42 of the driver shaft 32 is in contact with the screw 30 shown in FIG. 9A, and the rotating member 53 is wound inside while being rotated clockwise. Thus, the coil spring 38 is compressed, and the driver shaft 32 engaged with the rotating member 53 is contracted. After the driver shaft 32 is contracted, when the push button 54a of the hexagonal member 54 shown in FIG. 19B is pressed in the arrow direction Q, the spring 55 is pressed by the stopper 59a and contracts, and the hexagonal member 54 is engaged. The inside of 56 is further advanced, and the tip of the hexagonal member 54 is inserted into the insertion hole 62 at the bottom of the rotating member 53.

  After the insertion, the action portion 42 of the driver shaft 32 that is in contact with the screw 30 is pulled away from the screw 30. After the separation, the rotating member 53 tries to rotate by the biasing force of the coil spring 38, but the rotation of the rotating member 53 is stopped by the hexagonal member 54 inserted into the insertion hole 62 of the rotating member 53. Thereafter, when it is desired to extend the driver shaft 32, the push button 54 a is pulled in the direction opposite to the arrow direction Q, and the hexagonal member 54 inserted into the insertion hole 62 of the rotating member 53 is pulled out. As a result, the rotating member 53 is rotated by the urging force of the coil spring 38, and the driver shaft 32 engaged with the rotating member 53 extends to return to the initial state.

  Thus, according to the driver 300 as the third embodiment of the present invention, the tip of the hexagonal member 54 that is provided with the hexagonal member 54 and is fixed to the grip body 57 so as not to rotate is the bottom of the rotary member 53. Is inserted into the hexagonal insertion hole 62. Thereby, the rotation of the driver shaft 32 engaged with the rotating member 53 can be temporarily stopped by the hexagonal member 54.

  For example, in the driver 100, when the screw 30 does not rotate in the direction of loosening the screw 30, the fixing button 4 is pressed to fix the driver shaft 2, the wrist is rotated, and the screw 30 is loosened halfway. It is also conceivable that the fixed button 4 is released in the loosened state, and the screw 30 is loosened using the biasing force of the coil spring 3 for the rest.

  Compared with the driver 100, the driver 200 has a configuration in which the driver shaft is detachable. Thereby, the plus and minus of the driver shaft can be easily changed in the field according to the work. Of course, the driver shaft is not limited to plus and minus of the driver shaft, and driver shafts having other shapes can be used.

  Compared with the driver 200, the driver 300 has a function of stopping the rotation of the driver shaft because the rotation-stopping hexagonal member is engaged with the rotating member. The rotation can be stopped.

  Further, the drivers 100 to 300 can also be used as a fire-burning tool in preparation for an earthquake or the like by changing the driver shaft to a rotary rod for fire-burning. For example, the tip of the rotating rod is brought into contact with the rootstock, and the vertical movement is repeated for about 3 minutes to create a fire type.

  The present invention is suitable for application to drills, drivers, and the like.

1 is a perspective view illustrating a configuration example of a driver 100 as an embodiment according to the present invention. It is sectional drawing which shows the structural example of the driver 100 at the time of coil spring 3 expansion | extension. 3 is a partially enlarged cross-sectional view of a configuration example of a driver 100 when a coil spring 3 is extended. FIG. It is sectional drawing which shows the structural example of the driver 100 at the time of coil spring 3 compression. 3 is a partially enlarged cross-sectional view of a configuration example of a driver 100 when a coil spring 3 is compressed. FIG. A and B are explanatory views showing a configuration example of the driver shaft 2. It is explanatory drawing which shows the example which attaches the driver shaft 2 to the engaging member 7. FIG. It is explanatory drawing which shows the example which attaches the fixing button 4 to the engaging member 7. FIG. FIGS. 8A to 8C are process diagrams illustrating an operation example (part 1) of screw tightening of the driver 100. FIGS. A to E are process diagrams illustrating an operation example (part 2) of screw tightening of the driver 100. A to E are process diagrams showing an example of the screw loosening operation of the driver 100. It is sectional drawing which shows the structural example of the driver 200 as 2nd Example based on this invention. A and B are explanatory views showing a configuration example of the driver shaft 32. A and B are explanatory views showing a configuration example of the rotating member 33. A and B are process diagrams illustrating an operation example of the driver 200. It is sectional drawing which shows the structural example of the driver 300 as 3rd Example based on this invention. A and B are explanatory views showing a configuration example of the hexagonal member 54. A and B are explanatory views showing a configuration example of the rotating member 53. A and B are process diagrams illustrating an operation example of the driver 300.

Explanation of symbols

1, 37, 57 Grip body (gripping member)
2, 32 Driver shaft (rotating shaft)
3, 38 Coil spring (biasing member)
4 Fixed button 5, 41 Groove 7, 36, 56 Driver shaft engagement member 8 Rear end retaining portion 9 Driver shaft retaining portions 10a to 10d, 40a to 40f Protruding portion 33, 53 Rotating member 35 Pressing member 54 Hexagonal member 100 , 200, 300 drivers

Claims (4)

A rotary tool having a rotary shaft body, one end of which forms an action part,
A gripping body having an opening at one end, a predetermined shape at the other end, and a protrusion inside the hollow;
An urging member that is inserted from the opening and attached to the inside of the gripping main body, and applies an urging force to the rotating shaft body;
A rotary shaft body that is engaged with the gripping main body so as to receive a biasing force of the biasing member so as to be movable up and down and rotatable, and that has a spiral groove that comes into contact with the protrusion. Prepared,
The rotating shaft is
A rotating tool that rotates with vertical movement by an urging force of the urging member and an external force applied to the gripping body.   The rotary tool according to claim 1, further comprising a rotation stop member that is provided at a predetermined position of the gripping main body and stops the rotation of the rotary shaft body.   The rotary tool according to claim 1, wherein the shape of the action portion is a plus shape, a minus shape, or a drill shape.   The rotary tool according to claim 1, wherein the action portion has a replaceable structure.

Images