JP2008061868A - Handheld instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a handheld instrument such as a medical knife, capable of simplifying the locking and unlocking operation and allowing the instrument to be easily retained in the locked state. <P>SOLUTION: The handheld instrument comprises a holder 1, a movable head 21 to which a blade body 24 is attached, and an operating body 14 for supporting the movable head 21. The movable head 21 moves together with the operating body 14 relative to the holder 1, and takes the storage state or the projecting state separate from each other. In the holder 1, locking recesses 11 and 12 are juxtaposed in the direction X of movement of the operating body 14 on the front and rear sides of a guide aperture 10. The operating body 14 has a leaf spring part 17 for energizing an operating part 15 in the circumferential direction relative to an axis 16a so that locking projections 19 are locked with the locking recesses 11 and 12 of the holder 1. The lock of the locking projections 19 of the operating part 15 with the locking recesses 11 and 12 of the holder 1 can be released by operating the operating part 15 against the elasticity of the leaf spring part 17. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an improvement in a locking mechanism of an operating body with respect to a holder in a hand-held tool such as a medical blade that takes a plurality of states when a functional unit such as a blade moves together with the operating body with respect to the holder.

Conventionally, in Patent Document 1 below, a slit is provided in a sheath tube, and protrusions provided on a support rod inserted through the sheath tube are inserted into the slit, and locking portions provided at both ends of the slit are provided. This protrusion is locked to prevent the support rod from moving relative to the sheath tube.
Japanese Utility Model Publication No. 61-2570

  In Patent Document 1, since the protrusions of the support rods must be pushed into the both locking portions of the slit, not only the pressing operation is troublesome, but also the protrusions of the support rod easily come off from both the locking portions of the slit. Therefore, there is a possibility that the support rod moves carelessly with respect to the sheath tube.

  An object of the present invention is to facilitate a lock operation and an unlock operation in a hand-held tool such as a medical blade, and to easily maintain a locked state.

The present invention will be described with reference to the drawings (FIGS. 1 to 12) of the embodiments described later.
The hand-held tool according to the invention of claim 1 is configured as follows.
The hand-held tool includes a holder 1, a head 21 to which a functional unit 24 is attached, and an operating body 14 that supports the head 21. The head 21 takes a plurality of states Q and P which move together with the operating body 14 with respect to the holder 1 and are separated from each other. The holder 1 is provided with a plurality of locking portions 11 and 12 arranged side by side along the moving direction X of the operating body 14. In the operating body 14, an elastic body 17 that biases the operating portion 15 is provided so that the locking portion 19 is locked to the locking portions 11 and 12 of the holder 1, and the elastic force of the elastic body 17 is applied. By operating the operating portion 15 against the locking portion 19 and the locking portion 19 of the holder 1, the locking portion 19 of the operating portion 15 can be unlocked.

  In the first aspect of the invention, when the head 21 is moved together with the operating body 14 with respect to the holder 1 in the unlocked state of the operating section 15 and the operating section 15 is released, the operating section 15 is engaged by the elastic force of the elastic body 17. The stop portion 19 is automatically locked to the locking portions 11 and 12 of the holder 1. Therefore, it is easy to lock and unlock the operating body 14 with respect to the holder 1, and it is easy to maintain the locked state by the elastic body 17.

  In the invention of claim 2 premised on the invention of claim 1, each state of the head 21 includes the accommodation state Q accommodated in the holder 1 together with the function part 24, and the function part 24 protruding from the holder 1. And a protruding state P. In the invention of claim 2, the effect of the invention of claim 1 can be exhibited in the hand-held tool that can be accommodated in the holder 1 by the functional unit 24.

  In the invention of claim 3 based on the invention of claim 1 or claim 2, the elastic body 17 has elastic force in the circumferential direction R with respect to the axis 16a of the operation portion 15 along the movement direction X of the operation body 14. The operation unit 15 is actuated in the circumferential direction R. In the invention of claim 3, it is easy to operate the operation unit 15.

  In the operating body 14 according to the invention of the fourth aspect based on the invention of the third aspect, the elastic body 17 is provided between the operating portion 15 and the head 21, and the head 21 is supported by the elastic body 17. ing. In the invention of claim 4, the elastic body 17 that biases the operation portion 15 can be compactly assembled with respect to the operation body 14.

  In the invention of claim 5 premised on the invention of any one of claims 1 to 4, the operation portion 15 is arranged around the axis 16a of the operation portion 15 along the movement direction X of the operation body 14. It is actuated by being twisted relative to the head 21 in the direction R. In the invention of claim 5, it is easy to operate the operation unit 15.

  In the invention of claim 6 based on the invention of claim 3 or claim 4 or claim 5, the locking portion of the operation portion 15 is a locking convex portion 19, and each locking portion of the holder 1 is A plurality of locking recesses 11 and 12 arranged in parallel along the moving direction X of the operating body 14 with the guide hole 10 for guiding the locking protrusion 19 as the operating body 14 moves. With this operation, the locking projection 19 is engaged and disengaged between the locking recesses 11 and 12 and the guide hole 10. In the invention of claim 6, the locking structure of the operating body 14 with respect to the holder 1 can be simplified.

Next, technical ideas other than the claims will be described with reference to the reference numerals in the drawings of the embodiments.
In a seventh invention premised on the invention of claim 4, the operating portion 15 and the elastic body 17 of the operating body 14 and the head 21 are integrally formed. In the seventh invention, the operating body 14 and the head 21 can be easily provided.

  In the eighth invention based on the invention of claim 6, the locking projection 19 is provided on the cantilever base plate 18 having elasticity in the operation portion 15. In the eighth invention, the locking projection 19 can be easily fitted into the guide hole 10 by utilizing the elasticity of the base plate 18.

  In the ninth invention based on the eighth invention, when the locking projection 19 is engaged with the locking recesses 11 and 12, it escapes into the holder 1 against the elasticity of the base plate 18. The stoppers 11a, 12a and 19a locked to the locking recesses 11 and 12 so as to be prevented from being detached from the locking recesses 11 and 12 are connected to the locking projections 19 and the locking recesses 11 and 12, respectively. Between. In the ninth invention, inadvertent release of the locking projection 19 with respect to the locking recesses 11 and 12 can be restricted.

  The following tenth, eleventh, or twelfth aspects of the invention of any one of claims 1 to 6, or the seventh, eighth, or ninth invention. The invention, the thirteenth invention, the fourteenth invention or the fifteenth invention can be combined.

The handheld tool according to the tenth invention is configured as follows.
This hand-held tool includes a holder 1 and a movable head 21 to which a functional unit 24 is attached. The movable head 21 is supported so as to be movable with respect to the holder 1 so as to take a housing state Q housed in the holder 1 together with the functional part 24 and a projecting state P in which the functional part 24 projects from the holder 1. The orientation N of the functional unit 24 differs between the accommodation state Q and the protruding state P.

  In the tenth aspect of the invention, it is particularly suitable for a hand-held tool in which the functional unit 24 bends, and the functional unit 24 can be easily accommodated by changing the orientation N of the functional unit 24 in spite of the protruding state P in which the functional unit 24 is easily used. State Q can be entered. At that time, as in the eleventh aspect, the movable head 21 tilts in the middle of moving with respect to the holder 1 between the accommodated state Q and the projected state P, or the movable head 21 moves to the accommodated state Q or the projected state P. It may be tilted as it is. Therefore, the accommodation opening 4 of the holder 1 in which the functional unit 24 is accommodated can be reduced.

  In the eleventh invention based on the tenth invention, the movable head 21 tilts in the middle of moving with respect to the holder 1 between the accommodated state Q and the protruding state P. In the eleventh aspect, the functional unit 24 can be easily projected and retracted with respect to the accommodation port 4 of the holder 1.

The handheld tool according to the twelfth invention is configured as follows.
This hand-held tool includes a holder 1 and a movable head 21 to which a functional unit 24 is attached. The movable head 21 is supported so as to be movable with respect to the holder 1 so as to take a housing state Q housed in the holder 1 together with the functional part 24 and a projecting state P in which the functional part 24 projects from the holder 1. The position of the functional part 24 in the accommodated state Q and the position of the functional part 24 in the protruding state P change in the longitudinal direction X of the holder 1 and the direction Z orthogonal to the longitudinal direction X, respectively.

  In the twelfth aspect of the invention, the position of the functional unit 24 is orthogonal to the longitudinal direction X and the longitudinal direction X in spite of the protruding state P in which the functional unit 24 is particularly bent and is easy to use the functional unit 24. It can change to the direction Z, respectively, and it can be set as the accommodation state Q which can accommodate the function part 24 easily. Therefore, the accommodation opening 4 of the holder 1 in which the functional unit 24 is accommodated can be reduced.

  In a thirteenth invention based on the tenth invention or the eleventh invention, an operating body 14 for supporting the movable head 21 is provided, and the movable head 21 protrudes from the accommodation state Q by the operating body 14. It can move between states P. In the thirteenth invention, it is easy to move the movable head 21 between the housed state Q and the protruding state P.

  In the fourteenth invention based on the thirteenth invention, the operating body 14 is provided with an elastic body 17 capable of applying an elastic force to the movable head 21 between the accommodated state Q and the protruding state P. The movable head 21 is tilted by the elastic body 17. In the fourteenth invention, it is easy to tilt the movable head 21 between the housed state Q and the protruding state P using the elastic body 17.

  In the fifteenth invention based on the tenth invention, the eleventh invention, the thirteenth invention or the fourteenth invention, the holder 1 and the movable head 21 include the accommodation state Q and the protruding state P. Guide restricting portions 6, 7, 22, 8, 9, and 23 that allow the movable head 21 to move relative to the holder 1 and allow tilting are provided. In the fifteenth aspect, the movable head 21 can be smoothly tilted by the guide restricting portions 6, 7, 22, 8, 9, and 23.

  According to the present invention, in a hand-held tool such as a medical knife, when the operating portion 15 is released after the operating body 14 is moved, the locking portion 19 of the operating portion 15 is moved to the locking portion 11 of the holder 1 by the elastic force of the elastic body 17. The lock release state is changed from the lock release state to 12, and the lock operation and the lock release operation are facilitated, and the lock state is easily maintained by the elastic force of the elastic body 17.

Hereinafter, a hand-held tool according to an embodiment of the present invention will be described with reference to the drawings.
This hand-held tool is a medical knife, and as shown in FIGS. 1, 2, 3, 4 and 5 and 6, the holder 1 of this medical knife has an elongated cylindrical shape in the front-rear direction X. Inner holes 3 formed inside the outer peripheral wall 2 are opened at the front end 4 at the front end and the bottom end 5 at the rear end. On the outer peripheral wall 2, a pressing portion 6 serving as a guide restricting portion extends rearward from the head opening 4 on the inner peripheral upper side of both sides in the vertical direction Z. On the upper side of the outer peripheral wall 2, a pressure avoiding hole 7 (press avoiding part) as a guide restricting part continuing from the pressing part 6 through a step 6 a extends rearward and is opened outward from the inner hole 3. Yes. A guide groove 8 (press avoiding portion) as a guide restricting portion extends downward from the head opening 4 to the lower side of the inner periphery of the outer peripheral wall 2 so as to face the pressing portion 6 and the press avoiding hole 7 downward. . A receiving portion 9 as a guide restricting portion that continues from the guide groove 8 through a step 8a extends downward and faces the pressing avoidance hole 7 on the lower inner periphery of the outer peripheral wall 2. Yes. On the upper side of the outer peripheral wall 2, a guide hole 10 extends rearward slightly behind the pressing avoidance hole 7, and serves as a locking portion that extends in the circumferential direction R at the front end portion and the rear end portion of the guide hole 10. Locking recesses 11 and 12 are formed. As shown in FIGS. 7 to 10, edge portions 11 a and 12 a as stopper portions are formed on both front and rear sides of the both locking recesses 11 and 12. The holder 1 is integrally formed by injection molding using polycarbonate resin and has permeability.

  In the core member 13 of this medical blade, the operating body 14 includes an operating portion 15 mainly composed of a movable rod 16, and a leaf spring portion 17 as an elastic body extending forward from the lower side of the front end of the movable rod 16. have. In the operation unit 15, a cantilever-shaped base plate 18 extends forward from the upper side of the front end of the movable bar 16, and a locking projection 19 is formed on the base plate 18. As shown in FIG. 11 (a), flange portions 19 a as stopper portions project from both front and rear sides of the locking projection 19. A finger holder 20 is formed at the rear end of the movable bar 16.

  In the core member 13 of this medical blade, the movable head 21 is supported by the front end portion of the leaf spring portion 17 in front of the locking projection 19 on the base plate 18. Guide protrusions 22 and 23 are formed on the upper and lower sides of the movable head 21. A blade 24 as a functional unit is attached to the end surface portion 21 a of the movable head 21. In the blade body 24, the blade plate portion 24b extends obliquely upward from the front end portion of the support plate portion 24a. The blade body 24 is formed of stainless steel. The core member 13 composed of the movable head 21 and the operating body 14 is integrally formed of polybutadiene terephthalate resin.

  When the core member 13 is inserted into the holder 1, the finger holding part 20 of the movable rod 16 is inserted from the head opening 4 of the holder 1 and protruded from the bottom opening 5 of the holder 1. At this time, since the base plate 18 bends against the elastic force in the vertical direction Z, the locking projection 19 on the base plate 18 is moved along the inner periphery of the outer peripheral wall 2 and is fitted into the guide hole 10. be able to. The finger holder 20 is always exposed from the butt opening 5 on the opposite side of the head 4 where the movable head 21 appears and disappears in the holder 1. Arrows attached to the outer periphery of the outer peripheral wall 2 on both the front and rear sides of the guide hole 10 indicate the moving operation direction with respect to the locking convex portion 19.

  As shown in FIGS. 2 and 3, in the protruding state P in which the front portion of the movable head 21 and the blade body 24 protrude outward from the head 4 of the holder 1, as shown in FIG. The core member 13 is locked in the protruding state P because it is engaged with the front locking recess 11 and is prevented from moving in the front-rear direction X. At that time, as shown in FIG. 11 (a), even if the base plate 18 bends toward the inner hole 3, the both flange portions 19a of the locking convex portion 19 abut against both edge portions 11a of the locking concave portion 11, The locking projection 19 does not enter the inner hole 3 side. In the movable head 21, the upper guide protrusion 22, particularly the inclined surface 22 a thereof, is pushed downward against the elastic force of the leaf spring portion 17 by the upper pressing portion 6, so that the end surface portion 21 a side tilts upward. The lower guide projection 23 is engaged with the lower guide groove 8 to prevent the movable rod 16 from rotating in the circumferential direction R with respect to the axis 16a. In addition, since the outer peripheral surface of the front part of the movable head 21 is slightly aligned with the inner peripheral surface of the outer peripheral wall 2 including the pressing portion 6, the movable head 21 is The protruding state P of the movable head 21 can be stabilized by preventing movement in the direction Z and the left-right direction Y.

  In this protruding state P, when the finger holder 20 is gripped and the movable rod 16 is twisted with respect to the holder 1 against the elastic force of the leaf spring portion 17 in the circumferential direction R with respect to the axis 16a, the movable head 21 Since the locking projection 19 is detached from the front locking recess 11 toward the guide hole 10 as shown in FIG. 8, the core member 13 is locked in the protruding state P. Canceled. Since the non-slip uneven portion is formed on the outer periphery of the finger holder 20, the movable rod 16 can be easily twisted.

  As shown in FIG. 4, when the finger rest 20 is gripped and the movable rod 16 is twisted and pulled backward, the locking projection 19 moves along the guide hole 10, as shown in FIG. 9. Adjacent to the locking recess 12 on the side. Until then, in the movable head 21, as shown in FIGS. 5 and 6, the upper guide projection 22 is engaged with the upper pressing avoidance hole 7 from the upper pressing portion 6, and the lower The guide protrusion 23 is detached from the lower guide groove 8 and supported by the lower receiving portion 9, the leaf spring portion 17 is returned upward by the elastic force, and the end surface portion 21 a side is tilted downward. When the locking projection 19 is in the guide hole 10, the guide hole 10 can receive the torsional force of the movable rod 16. Thereafter, when the movable bar 16 is released, as shown in FIG. 10, the movable bar 16 is restored by the elastic force of the leaf spring portion 17 while the movable head 21 is prevented from rotating with respect to the holder 1. As the torsional force disappears, the locking projection 19 is automatically engaged with the locking recess 12 on the rear side and the movement in the front-rear direction X is prevented, so that the core member 13 is locked in the accommodated state Q. Is done.

  As shown in FIGS. 2 (b), 4 (a) and 5 (b), the movable head 21 and the blade body 24 are tilted during the projecting state P to the accommodated state Q, and their orientations are changed. N changes by about 12 °. That is, in the protruding state P, the blade plate portion 24b of the blade body 24 protrudes outside the region S where the head opening 4 of the holder 1 extends in the longitudinal direction (front-rear direction X), and within the region S in the accommodated state Q. The movable head 21 and the blade body 24 are tilted downward until they fall within the range.

  In this accommodated state Q, when the finger holder 20 is gripped and the movable rod 16 is twisted with respect to the holder 1 against the elastic force of the leaf spring portion 17 in the circumferential direction R with respect to the axis 16a, the movable head 21 9 is retained with respect to the holder 1, and the locking projection 19 is detached from the rear locking recess 12 toward the guide hole 10 as shown in FIG. It is unlocked.

  As shown in FIG. 4, when the finger holder 20 is gripped and the movable rod 16 is twisted and pushed forward, the locking projection 19 moves along the guide hole 10 and moves forward as shown in FIG. Adjacent to the locking recess 11. Until then, in the movable head 21, as shown in FIGS. 2 and 3, the upper guide protrusion 22 is separated from the upper press avoidance hole 7, and in particular, the inclined surface 22 a is formed by the upper press portion 6. While being pushed downward, the lower guide projection 23 is engaged with the lower guide groove 8 from the lower receiving portion 9, and the leaf spring portion 17 bends downward against the elastic force to end the end surface portion 21a. The side tilts upward. Thereafter, when the movable rod 16 is released, as shown in FIG. 7, the movable rod 16 is restored by the elastic force of the leaf spring portion 17 while the movable head 21 is prevented from rotating with respect to the holder 1. As the torsional force disappears, the locking projection 19 is automatically engaged with the locking recess 11 on the front side and the movement in the front-rear direction X is prevented, so that the core member 13 is locked in the protruding state P. Is done.

  In addition, an uneven portion 2a that can be touched by a finger at the time of an operation or when the core member 13 is projected and retracted is formed on both sides in the left-right direction Y on the outer periphery of the front portion of the outer peripheral wall 2, A mounting projection 5 a that prevents the holder 1 from rolling is formed on the outer periphery of the rear end portion of the outer peripheral wall 2.

  Incidentally, in the above-mentioned medical blade, the total length in the front-rear direction X is about 142 mm in the protruding state P shown in FIGS. 2 and 3, and the total length in the front-rear direction X is about 145 mm in the accommodated state Q shown in FIGS. The height in the vertical direction Z is about 9 mm, the height in the vertical direction Z at the head opening 4, that is, the height in the vertical direction Z is about 6.4 mm in the region S, and the maximum movement distance in the front-rear direction X is about It is set to 22 mm. Further, the torsion angle of the movable bar 16 is set to 10 to 45 °, preferably 15 to 30 ° in consideration of user convenience, torsional strength of the movable bar 16, and the like. Further, for the leaf spring portion 17 in the state of FIG. 1A and FIGS. 5 and 6, the length dimension in the front-rear direction X is about 40 mm between the movable rod 16 and the movable head 21, and the movable head 21. The thickness dimension in the vertical direction Z is about 1.0 mm near, the thickness dimension in the vertical direction Z is about 1.4 mm near the movable rod 16, and the width dimension in the left-right direction Y is about 3.7 mm near the movable head 21. In the vicinity of the movable rod 16, the width dimension in the left-right direction Y is set to about 4.5 mm. That is, the vicinity of the movable head 21 of the leaf spring portion 17 is a thin portion with a small thickness dimension and a narrow portion with a small width dimension, so that it is easily twisted in the circumferential direction R and easily bent in the vertical direction Z. .

  Therefore, in the present embodiment, in the medical blade, when the operation portion 15 is released after the head 21 is moved together with the operation body 14, the locking convex portion 19 of the operation portion 15 is held by the elastic force of the leaf spring portion 17. From the unlocked state to the first locking recesses 11 and 12, the locked state is changed to facilitate the locking operation and unlocking operation of the operating body 14 with respect to the holder 1, and the locked state is maintained by the elastic force of the leaf spring portion 17. Easy to do.

In addition to the above embodiment, the following configuration may be used.
* In the above embodiment, as shown in FIG. 11 (a), the flanges 19a as stoppers are formed on both sides of the locking projections 19, but the flanges 19a are formed only on one side of the locking projections 19. May be. In another example shown in FIG. 11 (b), stopper portions 19 a, 11 a, 12 a are formed in which both sides of the locking projection 19 and both sides of the locking recesses 11, 12 are bulged. In another example shown in FIG. 11C, stepped stopper portions 11 a and 12 a are formed on both sides of the locking recesses 11 and 12. In another example shown in FIG. 11 (d), the stopper portions on both sides of the locking projection 19 and the stopper portions on both sides of the locking recesses 11 and 12 are omitted. Although not shown, three or more locking recesses 11 and 12 may be formed along the guide hole 10.

  * In another example shown in FIG. 12, the blade body 24 moves in parallel between the housed state and the projecting state without changing the direction N, and the position of the blade body 24 in the housed state and the blade body 24 in the projecting state. The position changes by a distance L in the longitudinal direction X of the holder 1 and changes by a distance W in the vertical direction Z of the holder 1 perpendicular to the longitudinal direction X. Although not shown, this distance W may be changed in the left-right direction Y of the holder 1 orthogonal to the longitudinal direction X.

  * In the blade body 24, the bending angle of the blade plate portion 24b with respect to the support plate portion 24a is about 45 °, but other bending angles may be used. About the form of the bending part, you may curve in the shape of a curve, and you may form a some bending part. The same applies to the functional units other than the blade body 24.

  * As the guide restricting portion, instead of the upper and lower guide projections 22 and 23 of the movable head 21, the pressing portion 6 and the pressing avoidance hole 7 of the holder 1, the guide groove 8 and the receiving portion 9 of the holder 1, various structures are possible. Can be changed.

* The movable head 21 and the leaf spring portion 17 may be separately provided and attached, or the leaf spring portion 17 and the movable rod 16 may be provided separately and attached.
* The moving mechanism of the movable bar 16 is variously selected according to the purpose and form, such as a knock method widely used for writing instruments such as ballpoint pens, and a screw method that moves in the longitudinal direction while rotating like a micrometer. be able to.

  * In addition to medical tools such as scalpels, hand-held tools include writing instruments such as ballpoint pens, razors and cutters, blades such as knives and carving swords, ear scrapers, forks, cosmetic brushes, and lipsticks. The functional part varies depending on the handheld tool.

(A) is the side view which shows the decomposition | disassembly state which took out the core member from the holder in the medical cutter concerning this embodiment, (b) is sectional drawing which looked at the holder from the side surface side. (A) is a side view which shows the protrusion state of a blade body in the medical cutter concerning this embodiment, (b) is sectional drawing seen similarly from the side surface side. (A) is a top view which shows the protrusion state of a blade body in the medical cutter concerning this embodiment, (b) is sectional drawing seen similarly from the plane side. (A) is sectional drawing which looked at the intermediate state between the protrusion state and accommodation state of a blade body from the side in the medical blade concerning this embodiment, (b) is a top view which shows the intermediate state similarly It is. (A) is a side view which shows the accommodation state of a blade body in the medical cutter concerning this embodiment, (b) is sectional drawing seen similarly from the side surface side. (A) is a top view which shows the accommodation state of a blade body in the medical cutter concerning this embodiment, (b) is sectional drawing seen similarly from the plane side. (A) is a partial top view which shows a locked state in Fig.3 (a), (b) is the sectional view on the AA line of (a). (A) is a partial top view which shows a lock release state in Fig.3 (a), (b) is the BB sectional drawing of (a). (A) is a partial top view which shows a lock release state in Fig.6 (a), (b) is CC sectional view taken on the line of (a). (A) is a partial top view which shows a locked state in Fig.6 (a), (b) is the DD sectional view taken on the line of (a). (A) is the EE line | wire partial sectional drawing of Fig.3 (a) and Fig.6 (a), (b) (c) (d) is the (a) equivalent view which shows another example, respectively. (A) (b) is a schematic fragmentary sectional view which shows another example of the operation state of the blade body in the accommodation state and the protrusion state, respectively.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Holder, 10 ... Guide hole, 11 ... Locking recessed part as a locking part, 12 ... Locking recessed part as a locking part, 14 ... Operation body, 15 ... Operation part, 16a ... Axis, 17 ... As elastic body Leaf spring part, 19 ... locking convex part as a locking part, 21 ... movable head, 24 ... blade body as a functional part, Q ... accommodated state, P ... protruding state, R ... circumferential direction, X ... operation The front-rear direction, which is the direction of body movement.

Claims (6)

A holder, a head to which the functional unit is attached, and an operating body that supports the head; the head moves with the operating body relative to the holder and takes a plurality of states separated from each other; A plurality of engaging portions arranged in parallel along the moving direction of the operating body are provided, and in this operating body, an elastic body that biases the operating portion so that the engaging portion is engaged with the engaging portion of the holder is provided. A hand-held tool which is provided and capable of releasing the locking of the locking portion of the operating portion with respect to the locking portion of the holder by operating the operating portion against the elastic force of the elastic body. The hand-held tool according to claim 1, wherein each state of the head includes an accommodation state in which the function unit is accommodated in the holder and a protruding state in which the function unit is protruded from the holder. The said elastic body has the elastic force of the circumferential direction with respect to the axis line of the operation part along the moving direction of an operation body, The operation part is act | operated to the circumferential direction. Hand tools. The hand-held tool according to claim 3, wherein an elastic body is provided between the operation portion and the head in the operation body, and the head is supported by the elastic body. The said operation part is act | operated by being twisted with respect to the said head in the circumferential direction with respect to the axis line of the operation part along the moving direction of an operation body. Hand-held tool as described in the section. The locking part of the operation part is a locking convex part, and each locking part of the holder is arranged along the moving direction of the operating body with a guide hole for guiding the locking convex part as the operating body moves. 4. A plurality of engaging recesses provided, wherein the engaging projections are engaged and disengaged between the engaging recesses and the guide holes in accordance with the operation of the operation unit. The hand-held tool according to claim 4 or claim 5.

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