JP6808537B2 - Hand-held tool hook - Google Patents

Description

The present invention relates to a hook for suspending a hand-held tool such as a compressed air driven nail gun.

The hanging hook provided on this type of hand-held tool is provided with a movable hook whose hook width can be changed according to the hanging portion. Conventional movable hooks are provided with a rotary or translational movable mechanism. According to the rotary hook, when the hand-held tool is hung on the hook target, the position of the center of gravity of the hand-held tool varies and the hanging posture is not stable, and as a result, the hand-held tool tilts when the hook is hooked. In some cases, it could not be hung in a well-balanced manner.

On the other hand, even when a translation type hook is adopted, it is necessary to consider that there are various hooking targets. Examples of hooks for hanging hand-held tools include waist belts, stepladders, and scaffolding. For example, the optimum hooking width for hooking differs between the case of hooking on a waist belt and the case of hooking on a stepladder or scaffolding. That is, a structure that can be appropriately changed to the optimum hooking width for the hooking target is required. The following Patent Documents 1 and 2 disclose a parallel moving hook structure in which the hook width can be changed.

Jikkenhei 5-63783 Japanese Patent No. 3348605

As disclosed in Patent Documents 1 and 2, the conventional translational hook structure has a configuration in which the hook width is maintained by an urging force such as a plunger or the like. For this reason, in the conventional parallel movement type hook structure, the hook width changes in the direction of widening due to the influence of the weight and vibration of the hand-held tool at the time of hanging, and as a result, the hook is always hung in a stable posture. It was difficult to keep.

An object of the present invention is to ensure that the hooking width once set is maintained so that the hand-held tool can be stably suspended from the hooking target.

The above problems are solved by the following inventions.

The first invention is a hook provided on a hand-held tool and capable of engaging with a hooking target to suspend the hand-held tool. The first invention locks a hook body that can change the hook width with respect to the hooking target, a hook base that supports the hook body so as to be movable in a direction that changes the hook width, and a hook body that can move with respect to the hook base. It has a lock mechanism. In the first invention, the unlocking operation direction of the lock mechanism is a direction that intersects both the moving direction of the hook body and the width direction of the body.

According to the first invention, since the hooking width can be fixed at a position suitable for each hooking target, the hand-held tool can be hung stably regardless of the hooking target. Further, according to the first invention, since the unlocking operation direction of the lock mechanism and the moving direction of the hook body intersect, it is possible to prevent unintentional unlocking by an external force other than the unlocking operation.

A second invention is a hook having a configuration in which the unlocking operation direction of the lock mechanism coincides with the plate thickness direction of the hook body in the first invention.

According to the second invention, the unlocking operation direction coincides with the plate thickness direction intersecting both the moving direction of the hook body and the width direction of the main body, so that the locking mechanism associated with the hook moving operation is unintentionally unlocked. The lock operation can be prevented even more reliably.

A third invention is a hook in which the hook body is provided with a lock hole and a slide hole penetrating in the plate thickness direction intersecting both the moving direction and the body width direction in the first or second invention. is there. In the second invention, the slide hole extends in the moving direction of the hook body. In the second invention, the lock hole is provided so as to be connected to the slide hole with a width dimension larger than that of the slide hole. In the second invention, the lock mechanism includes a stopper that enters the lock hole and locks the movement of the hook body.

According to the third invention, the lock mechanism and the moving mechanism of the hook body can be configured with a small number of parts.

A fourth invention, in the third invention, is a hook having two columnar portions having different width dimensions from each other. In the fourth invention, one columnar portion has a width dimension that cannot pass through the slide hole and can pass through the lock hole, and the other columnar portion has a width dimension larger than that of the one columnar portion. Therefore, it has a width dimension that cannot be passed through both the slide hole and the lock hole. In the fourth invention, the stopper is moved in the plate thickness direction of the hook body to allow one columnar portion to enter the lock hole to function as a lock portion for locking the movement of the hook body, and lock the other columnar portion. It is a hook configured to function as a stopper for the hole and the slide hole.

According to the fourth invention, the lock mechanism and the moving mechanism of the hook body can be configured with a small number of parts and without using complicated parts.

A fifth invention is, in the third or fourth invention, a hook having a stopper for an unlock operation. In a fifth invention, the button has a flat surface on at least a portion of its side surface. The fifth invention has a configuration in which the flat surface of the button is positioned to face the flat surface provided on the hook base to regulate the rotation of the stopper around the axis.

According to the fifth invention, a flat surface is provided on at least a part of the side surface of the button. By arranging the flat surface of the button so as to face the flat surface on the hook base side, it is possible to prevent the button and thus the stopper from rotating about the axis.

A sixth invention is a hook in which the hook body is spring-loaded with respect to the hook base in a direction in which the hook width is widened in any one of the first to fifth inventions.

According to the sixth invention, the hooking width can be widened only by performing the unlocking operation with one hand.

A seventh aspect of the present invention is the sixth invention, wherein the lock mechanism does not function with respect to the movement of the hook body in the direction of reducing the hooking width.

According to the seventh invention, the operation of reducing the hooking width does not require an unlocking operation and can be operated with one hand.

The eighth invention is a hand-held tool provided with the hook according to any one of the first to seventh inventions.

According to the eighth invention, the hook can be applied to a wide variety of hand-held tools.

A ninth aspect of the present invention is a method for assembling a hook provided on a hand-held tool for engaging with a hooking object to suspend the hand-held tool. The hook according to the ninth invention includes a hook body that can change the hook width with respect to the hook target, a hook base that movably supports the hook body in a direction that changes the hook width, and movement of the hook body with respect to the hook base. It is equipped with a lock mechanism that locks. The hook main body according to the ninth invention includes a lock hole and a slide hole penetrating in a direction orthogonal to both the moving direction of the hook main body and the width direction of the main body. This slide hole extends in the moving direction of the hook body. Further, the lock hole is provided so as to be connected to the slide hole with a width dimension larger than that of the slide hole. The lock mechanism according to the ninth invention includes a stopper that enters the lock hole and locks the movement of the hook body. The hook base according to the ninth aspect of the invention includes a stopper support hole for supporting the stopper and a hook support hole through which the hook body can be inserted along the moving direction thereof. The stopper according to the ninth invention has first to third columnar portions having different width dimensions from each other. The first to third columnar portions are arranged side by side in the order of the first, second, and third toward the end of the stopper. The first columnar portion according to the ninth invention has a width dimension that allows it to enter the slide hole of the hook body. The second columnar portion according to the ninth invention has a width dimension larger than that of the first columnar portion, and has a width dimension that cannot enter the slide hole and can enter the lock hole. The third columnar portion according to the ninth invention has a width dimension larger than that of the second columnar portion and has a width dimension that cannot enter both the slide hole and the lock hole. At least a part of the side surface of the second and third columnar portions is provided with a flat surface for allowing entry into the slide hole. In the ninth invention, first, the stopper is inserted into the stopper support hole of the hook base in a state where the hook body is inserted into the hook support hole of the hook base. The ninth invention then causes the flat surfaces of the second and third columnar portions to enter the slide hole so that the second and third columnar portions are located on opposite sides of the slide hole in the penetrating direction. Next, in the ninth invention, the stopper is rotated about its axis in this state, and the third columnar portion functions as a slide hole and a retaining portion from the lock hole of the stopper. In the ninth aspect of the present invention, an operation button having a flat surface on at least a part of the side surface is attached to the head of the stopper, and the flat surface of the operation button is positioned to face the flat surface provided on the hook base. According to these procedures, the ninth invention can be assembled so that the stopper can be moved and operated between the lock position and the unlock position in the axial direction in a state where the rotation around the axis is restricted.

According to the ninth invention, the stopper can be easily attached to the hook body. Further, according to the ninth invention, the stopper can be maintained in the assembled state without coming out of the lock hole or the slide hole of the hook body.

It is a front view which attached the hook which concerns on 1st Embodiment of this invention to a hand-held tool. It is an overall perspective view of the hook which concerns on 1st Embodiment of this invention. It is an exploded perspective view of the hook which concerns on 1st Embodiment of this invention. It is a front view of the hook which concerns on 1st Embodiment of this invention. FIG. 5 is a bottom view of the hook according to the first embodiment of the present invention as viewed from the direction of the arrow (V) in FIG. It is a perspective view of the hook which concerns on 1st Embodiment of this invention. This figure shows a state in which the stopper and the hook body are not engaged. It is a perspective view of the hook which concerns on 1st Embodiment of this invention. In this figure, the stopper is engaged with the slide hole of the hook body. It is a perspective view of the hook which concerns on 1st Embodiment of this invention. In this figure, the stopper is slid along the slide hole of the hook body from the state of FIG. 7, and the second columnar portion of the stopper is engaged with the lock hole of the hook body. It is a perspective view of the hook which concerns on 1st Embodiment of this invention. In this figure, the stopper is rotated about an axis in the vertical direction from the state of FIG. 8, and the second columnar portion of the stopper is engaged with the lock hole of the hook body. It is a perspective view of the hook which concerns on 1st Embodiment of this invention, and shows the case where the hook body is locked. It is sectional drawing which shows the cross-sectional view of AA of FIG. 4, and is the left sectional view of the hook which concerns on 1st Embodiment of this invention. This figure shows a state in which the hook body is in the position shown in FIG. It is sectional drawing which shows the cross-sectional view of BB of FIG. 5, and is the front sectional view of the hook which concerns on 1st Embodiment of this invention. This figure shows a state in which the hook body is in the position shown in FIG. It is an overall perspective view of the hook which concerns on 1st Embodiment of this invention, and shows the case where the hook body is in an unlocked state. It is sectional drawing which shows the cross-sectional view of AA of FIG. 4, and is the left sectional view of the hook which concerns on 1st Embodiment of this invention. This figure shows a state in which the hook body is in the position shown in FIG. It is sectional drawing which shows the cross-sectional view of BB of FIG. 5, and is the front sectional view of the hook which concerns on 1st Embodiment of this invention. This figure shows a state in which the hook body is in the position shown in FIG. It is an exploded perspective view of the hook which concerns on 2nd Embodiment of this invention. It is a front view of the hook which concerns on 2nd Embodiment of this invention. FIG. 6 is a bottom view of the hook according to the second embodiment of the present invention as viewed from the direction of the arrow (XVIII) in FIG. It is a perspective view of the hook which concerns on 2nd Embodiment of this invention, and shows the state which the hook main body is in a locked position. FIG. 17 is a cross-sectional view showing a cross-sectional view taken along the line CC of FIG. 17, and is a left cross-sectional view of the hook according to the second embodiment of the present invention. This figure shows a state in which the hook body is in the position shown in FIG. It is sectional drawing which shows the cross-sectional view of DD of FIG. 18, and is the front sectional view of the hook which concerns on 2nd Embodiment of this invention. This figure shows a state in which the hook body is in the position shown in FIG. It is sectional drawing which shows the cross-sectional view of EE of FIG. 17, and is the left sectional view of the hook which concerns on 2nd Embodiment of this invention. This figure shows a state in which the hook body is in the position shown in FIG. It is an overall perspective view of the hook which concerns on 2nd Embodiment of this invention, and shows the state which the hook main body is in an unlocked position. FIG. 17 is a cross-sectional view showing a cross-sectional view taken along the line CC of FIG. 17, and is a left cross-sectional view of the hook according to the second embodiment of the present invention. This figure shows a state in which the hook body is in the position shown in FIG. 23. It is sectional drawing which shows the cross-sectional view of DD of FIG. 18, and is the front sectional view of the hook which concerns on 2nd Embodiment of this invention. This figure shows a state in which the hook body is in the position shown in FIG. 23.

Next, the first embodiment of the present invention will be described with reference to FIGS. 1 to 15. As shown in FIG. 1, in the first embodiment, as an example of attaching a hook to a hand-held tool, a configuration in which a hook 2 is attached to a nail gun 1 is illustrated.

Details of the hook 2 according to the first embodiment are shown in FIGS. 2 and later. First, as shown in FIGS. 2 and 3, the hook 2 is attached to the hook body 10, the hook base 20 that supports the hook body 10, the stopper 30, the lock spring 35 that gives urging force to the stopper 30, and the stopper 30. It is configured by assembling the attached operation button 36.

The hook main body 10 is manufactured by bending a strip-shaped steel plate into an L shape, extends from the moving portion 11 and the longitudinal end of the moving portion 11, and runs along the longitudinal direction in the plate thickness direction of the moving portion 11. It is provided with a wrist portion 15. As shown in the figure, in the following description, the direction in which the moving portion 11 extends is the front-rear direction, the direction in which the arm portion 15 extends is the vertical direction, and these width directions are the left-right directions, and each direction such as a member and a configuration is specified. ..

Two lock holes 12 and one slide hole 13 penetrating in the plate thickness direction are provided at the center of the moving portion 11 in the left-right width direction. The slide hole 13 is provided so as to extend in the longitudinal direction of the moving portion 11. The lock hole 12 is a substantially circular hole whose center is located at the center in the left-right width direction, and the hole diameter of the lock hole 12 is larger than the width of the slide hole 13. One lock hole 12 is provided at each end of the slide hole 13 extending in the longitudinal direction in connection with the slide hole 13. As shown in FIG. 3, the two connected lock holes 12 and one slide hole 13 have a so-called Daruma hole shape when viewed from the front of the outer surface 11a of the moving portion 11.

As shown in FIG. 3, the hook base 20 includes a box-shaped mounting portion 20a and a flat plate-shaped supporting portion 20b extending forward from the mounting portion 20a. The surface (rear surface) of the attachment portion 20a on the side opposite to the direction in which the support portion 20b extends is the attachment surface 20c with respect to the nail gun 1. The mounting portion 20a is provided with a bolt hole 20d that is orthogonal to the mounting surface 20c and penetrates the mounting surface 20c. As shown in FIGS. 1 and 3, when attaching the hook 2, the attachment surface 20c provided on the hook base 20 is the lower part of the grip portion 1a of the nail gun 1, which impairs the workability of the user. Make contact with no surface. With the mounting surface 20c in contact with the surface of the nail gun 1, the hook base 20 is screwed by bolts inserted into the bolt holes 20d that penetrate the mounting surface 20c at right angles to the mounting surface 20c. It is fixed to the nail gun 1. The arm portion 15 of the hook 2 to be engaged with the hooking target extends upward along the longitudinal direction of the grip portion 1a toward the tool body of the nail gun 1. As a result, when the hook 2 is engaged with the hooking target, the center of gravity of the nail gun 1 is located below the hook 2, so that the nail gun 1 can be suspended in a stable state.

The support portion 20b of the hook base 20 corresponds to a portion where the hook body 10 and the stopper 30 are assembled. As shown in FIGS. 11 and 12, the support portion 20b is inserted with a deep groove-shaped hook support hole 23 through which the moving portion 11 of the hook main body 10 is inserted in the longitudinal direction from the front to the rear, and a stopper 30. It is provided with a circular stopper support hole 21. The stopper support hole 21 and the hook support hole 23 are connected at right angles to each other. The stopper support hole 21 does not penetrate the support portion 20b and has a bottom portion 21a. The bottom portion 21a is on the back side of the lower surface of the hook support hole 23 that crosses the stopper support hole 21 when viewed from the entrance of the stopper support hole 21. As a result, when the moving portion 11 is inserted into the hook support hole 23, there is a space in which a part of the stopper 30 can be located on the back side of the inner side surface 11b of the moving portion 11. The inlet side (opening side) of the stopper support hole 21 is a button arrangement recess 22. The button arrangement recess 22 is provided in a substantially rectangular shape when viewed from the open side (entrance side). When the operation button 36 is attached to the stopper 30, the button arrangement recess 22 is arranged so that the operation button 36 can be accommodated.

As shown in FIG. 3, the stopper 30 is made of resin, and has three columnar portions having a substantially cylindrical shape having different maximum diameters of the first columnar portion 31, the second columnar portion 32, and the third columnar portion 33. It is composed of. The first to third columnar portions 31 to 33 are coaxially provided integrally, and the first columnar portion 31, the second columnar portion 32, and the third columnar portion 33 are arranged in this order from the lower side. It is arranged in. The lower part of the first columnar portion 31 is a button fitting portion 31a for attaching an operation button 36 for performing an unlock operation. The button fitting portion 31a is provided with a fitting flat portion 31b formed by chamfering a part of a cylindrical side portion. The second columnar portion 32 and the third columnar portion 33 are provided with two-sided width portions 32a and 33a that are flush with each other. The two-sided width portions 32a and 33a are portions in which a part of the side surface is formed on a flat surface, and the width dimension thereof is set so as to enter the slide hole 13 of the hook main body 10. On the other hand, the side portions of the second columnar portion 32 and the third columnar portion 33 that do not have a width across flats are a bulging portion 32b and a bulging portion 33b that bulge in a cylindrical shape in the radial direction.

Since the diameter of the first columnar portion 31 is smaller than the width of the slide hole 13, the first columnar portion 31 can enter the slide hole 13. Further, as described above, the width across flats 32a and 33a of the second columnar portion 32 and the third columnar portion 33 are set to have width dimensions that allow them to enter the slide hole 13. As a result, when the surface directions of the two-sided width portion 32a and the two-sided width portion 33a are oriented along the extending direction of the slide hole 13, the second columnar portion 32 and the third columnar portion 33 are the slide holes. You can enter 13. On the other hand, the diameter of the bulging portion 32b of the second columnar portion 32 is larger than the width of the slide hole 13 and smaller than the hole diameter of the lock hole 12. As a result, the second columnar portion 32 can enter the lock hole 12 regardless of the conditions, but when the plane direction of the width across flat portion 32a and the extending direction of the slide hole 13 intersect with the slide hole 13. , Can't enter. Further, the diameter of the bulging portion 33b of the third columnar portion 33 is larger than the diameter of the lock hole 12. As a result, the third columnar portion 33 cannot enter the lock hole 12 or the slide hole 13 in the assembled state where the surface direction of the width across flat portion 33a and the extending direction of the slide hole 13 intersect. As shown in FIG. 12, in the assembled state, the bulging portion 33b of the third columnar portion 33 is brought into contact with the inner side surface 11b of the hook main body 10, and the stopper 30 is displaced downward (falls off) with respect to the moving portion 11. ) Is regulated. Further, in the assembled state, the bulging portion 32b of the second columnar portion 32 can enter the lock hole 12. Since the diameter of the bulging portion 32b of the second columnar portion 32 is set to be larger than the width dimension of the slide hole 13, the bulging portion 32b of the second columnar portion 32 is the slide hole 13 in this assembled state. It is impossible to enter the inside, so that the front and rear positions of the hook body 10 are locked. The width across flats 32a and 33a are provided for the convenience of assembling the stopper 30 to the hook main body 10, and the assembling procedure will be described later.

A lock spring 35 is interposed between the stopper 30 and the bottom portion 21a of the stopper support hole 21. A lock spring hole 34 extending in the axial direction is provided on the upper end surface of the stopper 30 (upper surface of the third columnar portion 33). The lock spring hole 34 is a hole for arranging the lock spring 35, and the depth of the hole is shorter than the natural length of the lock spring 35. The stopper 30 is urged in the downward moving direction (lock position side) by the urging force of the lock spring 35.

The operation button 36 coupled to the lower part of the stopper 30 is a rectangular button in a plan view made of a resin such as urethane. A stopper fitting hole 36a for attaching the stopper 30 is provided on the upper surface of the operation button 36. The stopper fitting hole 36a has a shape that fits with the button fitting portion 31a of the stopper 30. That is, the stopper fitting hole 36a has a substantially circular hole shape, and a part of the stopper fitting hole 36a is a fitting flat portion 36b of the side wall of the flat surface corresponding to the fitting flat portion 31b. As a result, it is possible to prevent the stopper 30 fitted in the operation button 36 from rotating about the axis with respect to the operation button 36.

Next, the procedure for assembling the hook body 10 and the stopper 30 to the hook base 20 is shown in FIGS. 3 and 6 to 9. In assembling, first, as shown in FIG. 6, the moving portion 11 of the hook body 10 is inserted into the hook support hole 23 of the hook base 20. At this time, the moving portion 11 is inserted until the slide hole 13 can be seen on the back side when viewed from the entrance of the stopper support hole 21. Next, the lock spring 35 (not shown in FIGS. 6 to 9) is inserted into the lock spring hole 34 provided in the stopper 30. After that, the stopper 30 is oriented so that the surface directions of the two-sided width portion 32a and the two-sided width portion 33a are along the extending direction of the slide hole 13, and the end portion on the third columnar portion 33 side is outside the moving portion 11. The slide hole 13 is made to enter the slide hole 13 in the hole-penetrating direction so as to face the side surface 11a. Next, as shown in FIG. 7, the third columnar portion 33 is moved along the slide hole 13 to the lock hole 12 as shown in FIG. 8 in a state where the third columnar portion 33 is projected from the inner side surface 11b of the moving portion 11. .. After that, from the state of FIG. 8, as shown in FIG. 9, the stopper 30 is rotated about 90 ° around the axis, and the surface direction of the width across flats 32a and the width across flats 33a is the direction in which the slide hole 13 extends. Make it intersect. In the state of FIG. 9, since the bulging portion 33b of the third columnar portion 33 cannot enter the lock hole 12, the stopper 30 has the lock hole 12 in the direction from the inner side surface 11b to the outer surface 11a (downward in FIG. 9). You will not be able to get out of. In the state of FIG. 9, the bulging portion 32b of the second columnar portion 32 can enter the lock hole 12, but cannot enter the slide hole 13. Therefore, when the second columnar portion 32 is engaged with the lock hole 12 in the state of FIG. 9, the stopper 30 cannot enter the slide hole 13 from the lock hole 12. That is, the state in which the second columnar portion 32 is engaged with the lock hole 12 in the state of FIG. 9 corresponds to the state in which the moving portion 11 is in the locked position. The first columnar portion 31 can enter both the lock hole 12 and the slide hole 13. Therefore, when the first columnar portion 31 has entered the slide hole 13, the stopper 30 can relatively freely translate in the slide hole 13 along the extending direction of the slide hole 13. .. That is, the state in which the first columnar portion 31 has entered the slide hole 13 corresponds to the state in which the moving portion 11 is in the unlocked position. Finally, in the state of FIG. 9, the stopper fitting hole 36a of the operation button 36 is fitted with the button fitting portion 31a, and the operation button 36 is fitted into the button arrangement recess 22. In the state of FIG. 9, the fitting flat surface portion 31b and the fitting flat surface portion 36b are arranged in advance so that the operation button 36 can be fitted into the button arrangement recess 22. The hook 2 in a state where the assembly is completed through the above procedure is shown in FIGS. 10 to 15.

10 to 15 show a mode in which the movement of the hook body 10 is locked and unlocked. As shown in FIGS. 10 to 12, when the moving portion 11 is in the locked state, the second columnar portion 32 of the stopper 30 is engaged in a state of penetrating the lock hole 12 provided in the moving portion 11. An urging force acts on the stopper 30 in the direction in which the operation button 36 is located in the penetrating direction of the lock hole 12 by the lock spring 35. The second columnar portion 32 can enter the lock hole 12, but cannot enter the slide hole 13. As a result, the moving portion 11 does not move unless the second columnar portion 32 is removed from the lock hole 12 against the urging force of the lock spring 35. That is, the locked state of the moving portion 11 is maintained unless the unlocking operation is performed against the urging force of the lock spring 35.

When the operation button 36 is pushed against the urging force of the lock spring 35 to disengage the second columnar portion 32 from the lock hole 12, the moving portion 11 is unlocked. As shown in FIGS. 13 to 15, when the moving portion 11 is in the unlocked state, the first columnar portion 31 of the stopper 30 is engaged in a state of penetrating the lock hole 12 or the slide hole 13 provided in the moving portion 11. It fits. Since the first columnar portion 31 can enter both the lock hole 12 and the slide hole 13, the moving portion 11 can be moved in the front-rear direction while the operation button 36 is pressed and operated. When the moving portion 11 is in the unlock position (the position where the first columnar portion 31 is positioned in the slide hole 13), the second columnar portion pushed into the back side (upper side in FIG. 15) of the stopper support hole 21. The portion 32 cannot enter the slide hole 13. Therefore, when the moving unit 11 is in the unlocked position, the operation button 36 is kept in the pressed state, and the unlocked state of the moving unit 11 is maintained. When the moving portion 11 comes to the lock position again (the position where the first columnar portion 31 is positioned in the lock hole 12), the second columnar portion 32 automatically moves into the lock hole 12 by the urging force of the lock spring 35. Upon entering, the moving unit 11 is locked.

As shown in FIGS. 11, 12, 14, and 15, the moving portion 11 is not in direct contact with any parts other than the hook base 20 and the stopper 30. For example, the lock spring 35 does not come into direct contact with the moving portion 11 regardless of whether the moving portion 11 is in the locked state or the unlocked state. As a result, in the unlocked state, the moving portion 11 can be easily moved with a small force without generating a frictional force or the like between the lock spring 35 and the moving portion 11.

According to the first embodiment of the present invention described above, the hooking width W is set to a position of two stages by engaging the second columnar portion 32 of the stopper 30 with the two lock holes 12 provided in the moving portion 11. Can be fixed with. Thereby, for example, when the hand-held tool is hooked on the waist belt and when it is hooked on the stepladder or the scaffolding, the optimum hooking width W can be appropriately changed and fixed. Further, according to the first embodiment, the operation direction of the operation button 36 is set to intersect with both the moving direction and the left-right width direction of the hook main body 10. Therefore, it is possible to prevent the lock mechanism from being inadvertently unlocked due to the force applied to the hook body in the moving direction. In particular, unlike the case of the conventional lock mechanism using a detent or a plunger, the stopper 30 does not move even if an external force in the front-rear direction is applied to the hook body 10, whereby the hook body 10 is concerned. The operability of the hook 2 can be improved in this respect because the lock and unlock operations are not inadvertently performed during the movement operation of the hook 2. Further, the locked state of the moving portion 11 is continued unless the operation button 36 is pressed to disengage the engagement between the second columnar portion 32 and the lock hole 12. Therefore, it is possible to prevent the locked state of the moving portion 11 from being released and the hooking width W from changing due to the influence of the weight or vibration of the hand-held tool.

Further, according to the first embodiment, the movement of the hook body 10 is limited to the movement along the hook support hole 23. Further, according to the first embodiment, the operation button 36 rotates in the button arrangement recess 22 by engaging the operation button 36 having a substantially distance shape in the top view with the similarly rectangular recess 22 of the button arrangement recess 22. There is nothing to do. Therefore, the stopper 30 in which the operation button 36 is fitted does not rotate around its axis. That is, according to the first embodiment, since the hook body 10 and the stopper 30 are engaged with each other without changing their orientations, it is possible to prevent the stopper 30 from coming out of the lock hole 12 or the slide hole 13. This makes it possible to obtain a reliable locking / unlocking operation of the hook 2.

Further, according to the first embodiment, a mechanism for locking the moving portion 11 and a mechanism for moving the moving portion 11 are provided by assembling a small number of parts such as the hook body 10, the hook base 20, the stopper 30, the lock spring 35, and the operation button 36. It can be realized. In addition, this assembly can be performed without using any special tools.

Next, a second embodiment of the present invention will be described with reference to FIGS. 1 to 2, 6 to 9, and 16 to 25. The hook 42 according to the second embodiment of the present invention has the same appearance, a hook attachment target, a lock mechanism assembling procedure, and the like as the hook 2 according to the first embodiment. Therefore, only the parts and parts having a configuration different from that of the first embodiment will be described in detail by changing the reference numerals from those of the first embodiment. Further, for the parts and parts having the same configuration as that of the first embodiment, the same reference numerals as those of the first embodiment will be used.

In the second embodiment, as an example of attaching the hook to the hand-held tool, the hook 42 is attached to the nail gun 1 as shown in FIG. The hook 42 is attached in the same manner as in the first embodiment. As shown in FIG. 16, the hook 42 includes a hook body 10, a hook base 20 that supports the hook body 10, two hook width expansion springs 57 that give urging force to the hook body 10, a stopper 30, and a stopper 30. It is configured by assembling a lock spring 55 that gives an urging force to the stopper 30 and an operation button 36 that is attached to the stopper 30. The details of the hook width expansion spring 57 will be described later.

As shown in FIG. 16, the hook main body 10 of the second embodiment has a different form from the hook main body 10 of the first embodiment only in the strip-shaped moving portion 11. The moving portion 11 is provided with one lock hole 12 and one slide hole 13 penetrating in the plate thickness direction at substantially the center of the hook main body 10 in the main body width direction. The moving portion 11 is provided with only one lock hole 12 on the side closer to the arm portion 15 as compared with the moving portion 11 of the first embodiment. That is, one lock hole 12 is provided so that the moving portion 11 is locked only when the hooking width W is the minimum. The moving portion 11 is provided with two spring grooves 14. The two spring grooves 14 are provided on both the left and right sides of the slide hole 13. The spring groove 14 is cut at a constant depth from the rear end portion of the moving portion 11 and extends in a direction along the slide hole 13. The spring groove 14 is provided with a groove width larger than the outer diameter of the hook width expansion spring 57, and a groove depth to the groove bottom 14a is shorter than the natural length of the hook width expansion spring 57. Specifically, when the moving portion 11 is pushed into the hook support hole 23 to the position where the hooking width W is minimized, the hook width expanding spring 57 housed in the spring groove 14 shrinks from the natural length, and the moving portion The groove depth of the spring groove 14 is provided so that an urging force can be applied to the eleven. The spring groove 14 is provided so as to penetrate the moving portion 11 in the plate thickness direction.

As shown in FIG. 16, the hook base 20 of the second embodiment has a mounting portion 20a and a support portion 20b, similarly to the hook base 20 of the first embodiment. Further, in the hook base 20 of the second embodiment, similarly to the hook base 20 of the first embodiment, the mounting portion 20a is provided with a mounting surface 20c and a bolt hole 20d, and the support portion 20b is provided with a hook support. A hole 23 and a stopper support hole 21 are provided. The hook base 20 is provided with two spring insertion holes 24 for inserting and arranging the hook width expansion spring 57, which will be described later. The spring insertion hole 24 is provided along the hook support hole 23 so as to overlap the hook support hole 23. The spring insertion hole 24 is provided so as to be at the same position as the spring groove 14 when the moving portion 11 is inserted into the hook support hole 23.

As shown in FIG. 16, the stopper 30 of the second embodiment has three of the first columnar portion 31, the second columnar portion 32, and the third columnar portion 33, similarly to the stopper 30 of the first embodiment. It is composed of two columnar parts. The stopper 30 of the second embodiment is not provided with the lock spring hole 34 as compared with the stopper 30 of the first embodiment. In the second embodiment, instead of the lock spring 35 arranged inside the stopper 30, a lock spring 55 having a shape that covers the outside around the axis of the stopper 30 is used. As shown in FIGS. 20, 21, 24, and 25, the operation button 36 has a lock spring support for inserting and supporting one end of the lock spring 55 outward in the axial direction of the stopper fitting hole 36a. The groove 36c has an annular shape and is provided.

Next, a procedure for assembling the hook body 10 and the stopper 30 of the second embodiment to the hook base 20 will be described. The assembly procedure is substantially the same as that of the first embodiment shown in FIGS. 6 to 9. The difference from the first embodiment in assembly is that the lock spring 35 of the first embodiment is sandwiched between the bottom of the lock spring hole 34 and the bottom 21a of the stopper support hole 21, whereas the second embodiment The lock spring 55 of the form is a point sandwiched between the lock spring support groove 36c and the bottom surface of the button arrangement recess 22. That is, first, as shown in FIG. 9, the stopper 30 is assembled into the lock hole 12. After that, as shown in FIG. 16, the lock spring 55 is arranged so as to cover the stopper 30, the lock spring 55 is fitted into the lock spring support groove 36c, and the operation button 36 is fitted to the button fitting portion 31a. Install.

19 to 25 show aspects of locking and unlocking the movement of the hook body 10. As shown in FIGS. 19 to 21, when the moving portion 11 is in the locked state with a small hook width W, the second columnar portion 32 of the stopper 30 penetrates the lock hole 12 provided in the moving portion 11. Engage in. The operation button 36 is attached to the stopper 30 in the penetrating direction of the lock hole 12 by the lock spring 55 provided between the lock spring support groove 36c and the bottom surface of the button arrangement recess 22 reducing the spring length. A force is working toward the side. The second columnar portion 32 can enter the lock hole 12, but cannot enter the slide hole 13. As a result, the moving portion 11 does not move unless the operation button 36 is operated in the pushing direction against the urging force of the lock spring 55 to remove the second columnar portion 32 in the upward direction from the lock hole 12. That is, unless the operation button 36 is unlocked against the urging force, the locked state of the moving portion 11 with a small hook width W is maintained. As shown in FIG. 22, when the moving portion 11 is locked with a small hook width W, it is also when the hook body 10 has the minimum hook width W. Therefore, when the moving portion 11 is in the locked state, the hook width expanding spring 57 sandwiched between the end of the spring groove 14 and the bottom of the spring insertion hole 24 is in a state where the spring length is shortened. An urging force acts on the moving portion 11 in the direction in which the hook width W increases.

When the operation button 36 is pushed against the urging force of the lock spring 55 to disengage the second columnar portion 32 from the lock hole 12, the moving portion 11 is unlocked. As shown in FIGS. 23 to 25, when the moving portion 11 is in the unlocked state, the first columnar portion 31 of the stopper 30 is located inside the lock hole 12 or the slide hole 13 provided in the moving portion 11. It becomes. Since the first columnar portion 31 can enter both the lock hole 12 and the slide hole 13, the moving portion 11 can be moved to the unlocked position by pressing the operation button 36. On the other hand, when the moving portion 11 is in the locked state, the moving portion 11 is subjected to an urging force in the direction in which the hook width W is widened by the hook width expanding spring 57. As a result, when the moving portion 11 is in the unlocked state, the moving portion 11 automatically moves in the direction in which the hook width W is widened by the urging force of the hook width expanding spring 37. When the moving portion 11 is in the unlocked position, the second columnar portion 32 pushed into the back side (upper side in FIG. 25) of the stopper support hole 21 cannot enter the slide hole 13. Further, since the unlocked position of the moving portion 11 is held by the urging force of the hook width expansion spring 57, the hook width W is maintained in a wide state. Therefore, when the moving unit 11 is in the unlocked position, the operation button 36 is kept in the pressed state, and the unlocked state of the moving unit 11 is maintained. When the moving portion 11 is moved from the unlocked position to the locked position to reduce the hook width W, the moving portion 11 is pushed toward the hook base 20 side against the urging force of the hook width expansion spring 57. The pushing operation of the moving unit 11 can be performed with one hand because it is not necessary to perform other operations such as pressing the operation button 36. When the moving portion 11 comes to the locked position, the second columnar portion 32 automatically enters the lock hole 12 by the urging force of the lock spring 55, and the moving portion 11 is locked.

As shown in FIGS. 21, 22, 24, and 25, the moving portion 11 is not in direct contact with any parts other than the hook base 20, the stopper 30, and the hook width expansion spring 57. In particular, the lock spring 55 does not come into direct contact with the moving portion 11 regardless of whether the moving portion 11 is in the locked state or the unlocked state. As a result, when the operation button 36 is pressed to perform the unlock operation, the urging force of the lock spring 55 is not added as a resistance to the moving operation of the moving portion 11, so that the moving portion 11 (hook) The main body 10) can be smoothly moved to the side where the hook width W is increased by the urging force of the hook width expansion spring 57.

According to the second embodiment of the present invention described above, the hooking width W is minimized by engaging the second columnar portion 32 of the stopper 30 with one lock hole 12 provided in the moving portion 11. The moving portion 11 can be fixed. Thereby, for example, by providing the minimum hooking width W at the optimum hooking width when the hand-held tool is hooked on the waist belt, the hand-held tool can be stably hooked on the waist belt or the like. Further, according to the second embodiment, only by pressing the operation button 36 to unlock the moving portion 11, the moving portion 11 is automatically unlocked by the urging force of the hook width expansion spring 57. It can be moved to (a position where the hook width W is wide). Further, according to the second embodiment, the moving portion 11 is simply pushed toward the hook base 20 side against the urging force of the hook width expansion spring 57 without performing an operation such as pushing the operation button 36. , The hook width W can be reduced from the widened state.

Further, according to the second embodiment, a mechanism for locking the moving portion 11 and a mechanism for automatically moving the moving portion 11 can be assembled only by providing the configuration for adding the hook width expansion spring 57 to the first embodiment. In addition, this assembly can be performed without using any special tools.

Various changes can be made to the first and second embodiments described above. For example, the hand-held tool for attaching the hook is not limited to a nail gun, but may be a screwdriver, a drill, a round saw, a cutter, a blower, a grinder, or the like. Although the configuration in which the hook body is provided with two or one lock holes is illustrated, the number of steps in which the hook width W can be changed may be increased by providing three or more lock holes. Although the so-called L-shaped hook body has been illustrated, it may be, for example, a so-called U-shape or a U-shape as long as it is hooked on the hook target.

W ... Hook width 1 ... Nail gun, 1a ... Grip part 2 ... Hook 10 ... Hook body 11 ... Moving part, 11a ... Outer surface, 11b ... Inner surface 12 ... Lock hole 13 ... Slide hole 14 ... Spring groove, 14a ... Groove bottom 15 ... Arm 20 ... Hook base 20a ... Mounting part, 20b ... Support part, 20c ... Mounting surface, 20d ... Bolt hole 21 ... Stopper support hole, 21a ... Bottom 22 ... Button arrangement recess 23 ... Hook support hole 24 ... Spring insertion hole 30 ... Stopper 31 ... First columnar portion, 31a ... Button fitting portion, 31b ... Fitting flat portion 32 ... Second columnar portion, 32a ... Width across flats, 32b ... Swelling portion 33 ... Third columnar portion, 33a ... width across flats, 33b ... bulging portion 34 ... lock spring hole 35 ... lock spring 36 ... operation button 36a ... stopper fitting hole, 36b ... fitting flat portion, 36c ... lock spring support Groove 42 ... Hook 55 ... Lock spring 57 ... Hook width expansion spring

Claims (6)

A hook provided on a hand-held tool for hanging the hand-held tool by engaging with a hooking object.
A hook body that can change the hooking width with respect to the hooking target, a hook base that movably supports the hook body in a direction that changes the hooking width, and a lock that locks the movement of the hook body with respect to the hook base. Equipped with a mechanism
Unlocking direction of the locking mechanism up direction der crossing in both the moving direction and the body width direction of the hook body,
The hook body includes a lock hole and a slide hole penetrating in the plate thickness direction intersecting both the moving direction and the body width direction of the hook body, and the slide hole extends in the moving direction of the hook body. The lock hole is provided so as to be connected to the slide hole with a width dimension larger than that of the slide hole.
The lock mechanism includes a stopper that enters the lock hole and locks the movement of the hook body.
The stopper has two columnar portions having different width dimensions from each other.
The one columnar portion has a width dimension that cannot pass through the slide hole and can pass through the lock hole, and the other columnar portion has a width dimension larger than that of the one columnar portion. It has a width dimension that cannot be passed through both the slide hole and the lock hole.
The stopper is moved in the plate thickness direction of the hook body to allow one columnar portion to enter the lock hole to function as a lock portion for locking the movement of the hook body, and the other columnar portion is moved to the lock hole. A hook configured to function as a stopper for the lock hole and the slide hole . A hook provided on a hand-held tool for hanging the hand-held tool by engaging with a hooking object.
A hook body that can change the hooking width with respect to the hooking target, a hook base that movably supports the hook body in a direction that changes the hooking width, and a lock that locks the movement of the hook body with respect to the hook base. Equipped with a mechanism
Unlocking direction of the locking mechanism up direction der crossing in both the moving direction and the body width direction of the hook body,
The hook body is spring-loaded with respect to the hook base in a direction in which the hook width is widened.
A hook having a configuration in which the lock mechanism does not function for movement in the direction of reducing the hooking width of the hook body . The hook according to claim 1 or 2 , wherein the unlocking operation direction of the lock mechanism coincides with the plate thickness direction of the hook body. The hook according to claim 1 .
The stopper is provided with a button for unlocking operation, and the button has a flat surface at least a part of the side surface, and the flat surface of the button is positioned to face the flat surface provided on the hook base. A hook configured to regulate the rotation of the stopper around the axis. A hand-held tool provided with the hook according to any one of claims 1 to 4 . It is a method for assembling a hook provided on a hand-held tool for engaging with a hooking object and suspending the hand-held tool to the hand-held tool.
The hook includes a hook body that can change the hook width with respect to the hooking target, a hook base that movably supports the hook body in a direction that changes the hooking width, and movement of the hook body with respect to the hook base. Equipped with a lock mechanism to lock
The hook main body includes a lock hole and a slide hole penetrating in a direction orthogonal to both the moving direction of the hook main body and the width direction of the main body, and the slide hole extends in the moving direction of the hook main body. The lock hole is provided so as to be connected to the slide hole with a width dimension larger than that of the slide hole.
The lock mechanism includes a stopper that enters the lock hole and locks the movement of the hook body.
The hook base includes a stopper support hole for supporting the stopper and a hook support hole through which the hook body can be inserted along the moving direction thereof.
The stopper has first to third columnar portions having different width dimensions from each other, and the first to third columnar portions are first, second, and first toward the end of the stopper. They are arranged side by side in the order of 3.
The first columnar portion has a width dimension that allows it to enter the slide hole of the hook body.
The second columnar portion has a width dimension larger than that of the first columnar portion, and has a width dimension that cannot enter the slide hole and can enter the lock hole.
The third columnar portion has a width dimension larger than that of the second columnar portion and has a width dimension that cannot enter both the slide hole and the lock hole.
Each of the second and third columnar portions is provided with a flat surface for allowing entry into the slide hole at least a part of the side surface of the second and third columnar portions.
With the hook body inserted into the hook support hole of the hook base, the stopper is inserted into the stopper support hole of the hook base, and the flat surface of the second and third columnar portions is inside the slide hole. The second and third columnar portions are positioned on the opposite side of the slide hole in the penetrating direction, and in this state, the stopper is rotated about its axis, and the third columnar portion is of the stopper. It functions as a retaining portion from the slide hole and the lock hole, and then attaches an operation button having a flat surface to at least a part of the side surface to the head of the stopper, and attaches the flat surface of the operation button to the hook base. A method of assembling the stopper so that it can be moved and operated between the locked position and the unlocked position in the axial direction in a state where the rotation around the axis is restricted by placing the stopper at a position facing the flat surface provided in the above.

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