TWI730568B - Tool with replaceable working end - Google Patents

Abstract

A tool with replaceable working end includes a pair of handles, a pair of working members, a pivoting member, and a positioning device. The pair of handles are each provided with a first pivoting portion and a slot. One of the pair of handles is provided with a through-hole communicating with the slot. The pair of working members are each provided with a working end, a connecting end detachably connected to the slot, and a second pivoting portion. The connecting end of one of the pair of working members is provided with an engaging recess. The pivoting member passes through the first pivoting portion and the second pivoting portion. The positioning device includes a latch member movably disposed in the through-hole in a first direction, and a pusher member movably in a second direction different from the first direction. The pusher member can move and push against the latch member in the second direction so that the latch member moves relative to the through-hole in the first direction and is detached from the engaging recess.

Description

Replaceable working end tools

The invention relates to a hand tool, especially a tool with a replaceable working end.

At present, generally replaceable working end tools, such as the tool disclosed in US Patent No. 6,023,805, include a pair of handles (11, 12), each of which has a hole (111, 121) formed at one end of the handle (11, 12) ) Is used to accommodate a fastener (20, 21) to allow the handle (11, 12) to pivot around the fastener (20, 21). The fasteners (20, 21) preferably include a male screw or bolt 20 and a female screw or nut 21 screwed therewith. One or more tool parts (10, 30, 31) each include a hole (101, 33, 35) formed in the middle part of the hole (101, 33, 35) for accommodating fasteners (20, 21) to allow the tool parts (10, 30) , 31) rotatably connected to the handle (11, 12). However, the above-mentioned tool parts (10, 30, 31) are screwed together with fasteners (20, 21) to be locked and assembled on the handles (11, 12). When another tool part is to be replaced (10, 30, 31), it takes time to unscrew and separate the fasteners (20, 21) before changing the tool heads (10, 30, 31), so it is time-consuming and inconvenient to assemble or disassemble.

In view of this, how to overcome or improve the above-mentioned existing problems with replaceable work-end tools has become the goal of the relevant industry.

The tool with a replaceable working end provided by the present invention includes a pair of handles, a pair of working parts, a shaft and a positioning device. The pair of handles are each provided with a first pivot portion and an insertion groove, and one of the pair of handles is provided with a through hole communicating with the insertion groove. The pair of working pieces are each provided with a working end, a plug-in end detachably connected to the plug-in slot, and a second pivot part located between the working end and the plug-in end, and one of the pair of working pieces is plugged in A card slot is provided at the end. The shaft member passes through the first pivot part and the second pivot part. The positioning device includes a detent member movably disposed in the perforation in a first direction, and an ejector member movably disposed in the perforation in a second direction different from the first direction. The locking member can be detachably locked in the slot, and the pushing member can move in the second direction to push against the locking member, causing the locking member to move relative to the perforation along the first direction and get out of the slot.

In an embodiment of the present invention, the perforation is provided along the axis, the axis extends in the second direction, and the first direction is a radial direction perpendicular to the axis. The latch is provided with a latch extending toward the insertion slot, and the latch The part protrudes into the inserting slot along with the pushing part pushing against the catching part and can be detachably clamped to the card slot.

In an embodiment of the present invention, the locking member is provided with a first inclined surface, the pushing member is provided with a second inclined surface corresponding to the first inclined surface, the second inclined surface contacts the first inclined surface, and the axis passes through the first inclined surface and the second inclined surface. Incline.

In an embodiment of the present invention, the inclination angle of the first inclined surface and the second inclined surface is 45 degrees.

In an embodiment of the present invention, the latch is provided with a bottom surface adjacent to the first inclined surface, and the included angle between the bottom surface and the first inclined surface is 45 degrees.

In an embodiment of the present invention, the positioning device includes an elastic member elastically abutting between the bottom surface and the inner wall surface of the through hole, and the elastic member constantly pushes against the locking member in the radial direction.

In an embodiment of the present invention, the elastic member is a conical compression spring.

In an embodiment of the present invention, the pushing member is provided with a pressing portion opposite to the second inclined surface and an extension portion connected to the pressing portion, the extension portion extends along the axis by the pressing portion, and the second inclined surface is formed at the end of the extension portion .

In an embodiment of the present invention, the pushing member is provided with a limiting protrusion located on the inner side surface of the pressing portion, the extending direction of the limiting protrusion is parallel to the extending portion, and the limiting protrusion is moved as the pushing member moves relative to the perforation Selectively abuts against the outer surface of one of the pair of handles. The positioning device includes a limiting member that can pivot with respect to one of the pair of handles with the axis as the pivot center. The limiting member is provided with a receiving slot, a first through hole and a limiting slot. The accommodating slot is located at one end of the limiting member and accommodates the pressing part. The first through hole penetrates the bottom of the pocket along the axis, and the extension part is movably penetrated through the first through hole along the axis. The limiting groove extends in the radial direction from the first through hole and penetrates the bottom of the receiving groove, and the limiting groove is selectively aligned with the limiting convex portion along with the limiting member pivoting, so that the limiting convex portion is relatively perforated along with the pushing member It moves and selectively abuts against the outer surface of one of the pair of handles or the bottom of the container.

In an embodiment of the present invention, the through hole forms a shoulder adjacent to the outer surface of one of the pair of handles. The pushing member extends in the radial direction from the extension portion to form a limiting portion. The positioning device includes a cover sheet covering the shoulder, the cover sheet is provided with a second through hole penetrating the cover sheet, the extension part is movably pierced through the first through hole and the second through hole along the axis, and the limiting part follows the The extension portion moves relative to the first through hole and the second through hole and selectively abuts against the side surface of the cover sheet.

Based on the above, the tool with the replaceable working end provided by the above-mentioned embodiment of the present invention can be detachably clamped in the clamping slot by the clamping part of the clamping member, and the pair of working members can be detached by a simple pressing action The pair of handles can be used to quickly replace work pieces.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

FIG. 1 is a schematic diagram of the appearance of a tool with a replaceable working end according to an embodiment of the present invention. Figure 2 is an exploded schematic diagram of the replaceable working end tool shown in Figure 1. 3A and 3B are cross-sectional schematic diagrams of the tool of the replaceable working end shown in FIG. 1, each showing that the limiting member is in the locked position and the actuated position. Figures 4 to 7 are schematic diagrams of the use of the tool of the replaceable working end shown in Figure 1. Please refer to Figures 1 to 7, the replaceable working end tool of this embodiment includes a pair of handles 10 pivotally connected to each other, a pair of working pieces 20 detachably connected to the pair of handles 10, and a pair of The pair of handles 10 and the shaft 30 of the pair of work pieces 20 and a positioning device 40.

Each of the pair of handles 10 is provided with a first pivot portion 11 and an insertion slot 12, and the first pivot portion 11 and the insertion slot 12 are located at one end of each handle 10. One of the pair of handles 10 is provided with a through hole 13 communicating with the insertion groove 12, and the hole 13 is arranged along an axis A13 and penetrates the outer surface of one of the pair of handles 10. The through hole 13 forms a shoulder 131 adjacent to the outer surface of one of the pair of handles 10. Each of the pair of working pieces 20 is provided with a working end 21, a plug-in end 22 detachably connected to the plug-in slot 12, and a second pivot portion 23 between the working end 21 and the plug-in end 22. The insertion end 22 of one of the pair of working parts 20 is provided with a card slot 221. The type of the working end 21 can be the working end of a hand tool such as a pliers head that utilizes the principle of leverage, such as needle-nose pliers, vise, or scissors.

The shaft member 30 penetrates through the first pivot portion and the second pivot portion, so that the pair of handles 10 and the pair of working members 20 can pivot to each other.

The positioning device 40 includes a latch 41 movably arranged in the through hole 13 in a first direction, an ejector 42 movably arranged in the through hole 13 in a second direction different from the first direction, An elastic member 43 elastically abutting against the inner wall surface of the locking member 41 and the through hole 13, a limiting member 44 that can pivot with respect to one of the pair of handles 10 with the axis A13 as the pivot center, and a cover于孔13的盖片45。 In the perforation 13 cover sheet 45. In this embodiment, the axis A13 can extend in the second direction, so the first direction can be a radial direction perpendicular to the axis A13, but it is not limited to this. The locking member 41 is detachably locked in the slot 221, and the pushing member 42 is movably pushed against the locking member 41 in the second direction (along axis A13 in this embodiment), causing the locking member 41 to move along the first direction (In this embodiment, it moves along the radial direction of the axial direction A13) relative to the through hole 13 to escape from the slot 221. Therefore, the pair of working parts 20 can be separated from the pair of handles 10 to replace a working part with another type of working end (not shown in the figure).

The detent member 41 is provided with a detent portion 411 extending toward the insertion slot 12, and the detent portion 411 extends into the insertion slot 12 as the pushing member 42 pushes against the detent member 41 and can be detachably clamped in the slot 221 . As a result, the pair of work pieces 20 can be separated from the pair of handles 10. In order to allow the locking member 41 to move relative to the through hole 13 in the radial direction, the locking member 41 is provided with a first inclined surface 412, and the inclination angle of the first inclined surface 412 can be 45 degrees. In this embodiment, the latch 41 is provided with a bottom surface 413 adjacent to the first inclined surface 412, and the included angle between the bottom surface 413 and the first inclined surface 412 is 45 degrees.

The pushing member 42 is provided with a second inclined surface 421 corresponding to the first inclined surface 412, and the inclination angle of the second inclined surface 421 can be 45 degrees. The second inclined surface 421 is in surface contact with the first inclined surface 412, and the axis A13 passes through the first inclined surface 412 and the second inclined surface 421. The pushing member 42 is provided with a pressing portion 422 opposite to the second inclined surface 421 and an extension portion 423 connected to the pressing portion 422. The extension portion 423 is extended by the pressing portion 422 along the axis A13, and the second inclined surface 421 is formed on the extension portion 423 One end. The pushing member 42 is provided with a limiting protrusion 424 located on the inner surface of the pressing portion 422. The extending direction of the limiting protrusion 424 is parallel to the extending portion 423, and the extending portion 423 and the limiting protrusion 424 can be integrated by the pressing portion 422 Extension formation. The limiting protrusion 424 selectively abuts against the outer surface of one of the pair of handles 10 as the pushing member 42 moves relative to the through hole 13. The pushing member 42 further extends radially from the extending portion 423 to form a limiting portion 425.

The elastic member 43 elastically abuts between the bottom surface 413 and the inner wall surface of the through hole 13, and the elastic member 43 constantly pushes against the locking member 41 in the radial direction, so that the locking portion 411 of the locking member 41 is in a normal state (unsupported The pushing member 42 pushes against) is a constant card connected to the card slot 221. In this embodiment, the elastic member 43 can be a conical compression spring, but it is not limited to this.

The limiting member 44 is provided with a receiving slot 441, a first through hole 442 and a limiting slot 443. The receiving groove 441 is located at one end of the limiting member 44 and receives the pressing portion 422 of the pushing member 42. The first through hole 442 penetrates the bottom of the pocket 441 along the axis A13, so that the extension 423 of the pushing member 42 is movably penetrated through the first through hole 442 along the axis A13. The limiting slot 443 extends radially from the first through hole 442 and penetrates the bottom of the receiving slot 441, and the limiting slot 443 is pivoted along with the limiting member 44 to selectively align with the limiting protrusion 424 of the pushing member 42. As a result, the limiting protrusion 424 selectively abuts against the outer surface of one of the pair of handles 10 or the bottom of the receiving groove 441 as the pushing member 42 moves relative to the through hole 13.

The cover 45 is disposed on the shoulder 131 of the through hole 13 and is provided with a second through hole 451 penetrating the cover 45, so the extension 423 of the pushing member 42 is movable along the axis A13 and penetrates through the first through hole 442 and the second through hole 451, and the limiting portion 425 selectively abuts against the side surface of the cover sheet 45 as the extension portion 423 moves relative to the first through hole 442 and the second through hole 451.

As shown in Figures 3A and 3B, the limiting member 44 can be forced by the user (for example, pushed by the thumb) to pivot relative to one of the pair of handles 10 with the axis A13 as the pivot center to be in the locked position (Figure 3A) and the actuation position (Figure 3B). When the limiting member 44 is in the locked position, the limiting groove 443 is not aligned with the limiting protrusion 424 of the pushing member 42, so that the limiting protrusion 424 can only abut against the receiving groove 441 as the pushing member 42 moves relative to the through hole 13 As a result, the latching portion 411 of the latching member 41 cannot be separated from the latching slot 221. Therefore, when the limiting member 44 is in the locked position, even if the pressing portion 422 of the pushing member 42 is pressed, the pair of working members 20 cannot be separated from the pair of handles 10 to achieve the limiting function.

Please refer to FIG. 3B to FIG. 7, when the limiting member 44 is in the active position, that is, the limiting groove 443 is aligned with the limiting protrusion 424 of the pushing member 42. The user can press the pressing portion 422 located in the receiving groove 441 of the limiting member 44, so that the extension portion 423 of the pushing member 42 moves relative to the through hole 13 along the axis A13, and the limiting portion 425 is away from the side surface of the cover sheet 45 (as shown in FIG. 6 Shown). At this time, the first inclined surface 412 of the locking member 41 is pushed by the second inclined surface 421 of the pushing member 42, so that the locking member 41 moves radially relative to the through hole 13, and the bottom surface 413 of the locking member 41 compresses the elastic member 43. (As shown in FIG. 7), causing the detent portion 411 to exit the insertion slot 12 and escape from the card slot 221. Thereby, the plug-in ends 22 of the pair of working parts 20 can be separated from the plug-in slots 12 of the pair of handles 10 to quickly replace a working part with another type of working end (not shown in the figure).

In summary, the tool of the replaceable working end of this embodiment is detachably clamped to the clamping slot 221 by the clamping part 411 of the clamping member 41, and the pair of working members 20 can be detached by a simple pressing action. The pair of handles 10 can be used to quickly replace work pieces.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be subject to those defined by the attached patent application scope.

10: Grip 11: The first pivot 12: Socket 13: Piercing 131: Shoulder A13: Axis 20: work piece 21: working end 22: Socket end 221: card slot 23: second pivot 30: Shaft 40: positioning device 41: Card switch 411: Card Control Department 412: first slope 413: Bottom 42: pusher 421: second slope 422: pressing part 423: Extension 424: Limit convex 425: Limit 43: Elastic part 44: limit piece 441: Conveyor 442: first through hole 443: limit slot 45: cover sheet 451: second through hole

FIG. 1 is a schematic diagram of the appearance of a tool with a replaceable working end according to an embodiment of the present invention. Figure 2 is an exploded schematic diagram of the replaceable working end tool shown in Figure 1. 3A and 3B are cross-sectional schematic diagrams of the tool of the replaceable working end shown in FIG. 1, each showing that the limiting member is in the locked position and the actuated position. Figures 4 to 7 are schematic diagrams of the use of the tool of the replaceable working end shown in Figure 1.

10: Grip

11: The first pivot

12: Socket

13: Piercing

131: Shoulder

A13: Axis

20: work piece

21: working end

22: Socket end

221: card slot

23: second pivot

30: Shaft

40: positioning device

41: Card switch

411: Card Control Department

412: first slope

42: pusher

421: second slope

422: pressing part

423: Extension

424: Limit convex

43: Elastic part

44: limit piece

442: first through hole

443: limit slot

45: cover sheet

451: second through hole

Claims (10)

A tool that can replace the working end, including: A pair of handles, each of the pair of handles is provided with a first pivot portion and an insertion groove, one of the pair of handles is provided with a through hole communicating with the insertion groove; A pair of working pieces, each of which is provided with a working end, a plug-in end detachably connected to the plug-in slot, and a second pivotal portion located between the working end and the plug-in end, and A card slot is provided on the plug-in end of one of the pair of work pieces; A shaft, passing through the first pivot portion and the second pivot portion; and A positioning device, comprising a detent member movably disposed in the perforation in a first direction and a pushing member movably disposed in the perforation in a second direction different from the first direction, The locking member can be detachably locked in the slot, and the pushing member can move in the second direction to push against the locking member, so that the locking member moves along the first direction relative to the perforation and disengages The card slot. As described in item 1 of the scope of patent application, the perforation is provided along an axis, the axis extends along the second direction, and the first direction is a radial direction perpendicular to the axis. The detent part is provided with a detent part extending toward the insertion groove, and the detent part extends into the insertion groove as the pushing part pushes against the detent part and can be detachably clamped in the card groove. For the replaceable working end tool described in item 2 of the scope of patent application, wherein the locking member is provided with a first inclined surface, the pushing member is provided with a second inclined surface corresponding to the first inclined surface, and the second inclined surface is in contact with The first inclined surface, and the axis passes through the first inclined surface and the second inclined surface. As described in item 3 of the scope of patent application, the inclination angle of the first inclined surface and the second inclined surface is 45 degrees. As described in item 4 of the scope of patent application, the tool with a replaceable working end, wherein the latch is provided with a bottom surface adjacent to the first inclined surface, and the included angle between the bottom surface and the first inclined surface is 45 degrees. The tool with a replaceable working end as described in item 5 of the scope of patent application, wherein the positioning device includes an elastic member elastically abutting between the bottom surface and the inner wall surface of the perforation, and the elastic member is always along the radial direction Push to the catch. In the replaceable working end tool described in item 6 of the scope of patent application, the elastic member is a conical compression spring. For the replaceable working end tool described in any one of claims 3 to 7, wherein the pushing member is provided with a pressing portion opposite to the second inclined surface and an extension portion connected to the pressing portion, the The extension portion is extended along the axis by the pressing portion, and the second inclined surface is formed at an end of the extension portion. As described in item 8 of the scope of patent application, the tool with a replaceable working end, wherein the pushing member is provided with a limiting protrusion located on the inner side of the pressing portion, and the extending direction of the limiting protrusion is parallel to the extension portion , The limiting protrusion selectively abuts against the outer surface of one of the pair of handles as the pushing member moves relative to the through hole, and the positioning device includes a pivoting center relative to the pair of handles. One of the pivoting limiting members, the limiting member is provided with a receiving slot, a first through hole and a limiting slot, the receiving slot is located at one end of the limiting member and accommodating the pressing portion, the first The through hole penetrates the bottom of the accommodating groove along the axis, the extension part is movably pierced through the first through hole along the axis, and the limiting groove extends from the first through hole in the radial direction and penetrates the accommodating groove The limiting groove selectively aligns with the limiting protrusion along with the limiting member pivoting, so that the limiting protrusion selectively abuts against the pair as the pushing member moves relative to the perforation The outer surface of one of the handles or the bottom of the container. The tool with a replaceable working end described in item 9 of the scope of patent application, wherein the through hole forms a shoulder adjacent to the outer surface of one of the pair of handles, and the pushing member is positioned along the radial direction at the extension Extending to form a limiting portion, the positioning device includes a cover sheet covering the shoulder, the cover sheet is provided with a second through hole penetrating the cover sheet, and the extension portion is movably penetrated through the cover sheet along the axis. The first through hole and the second through hole, and the limiting portion selectively abuts against the side surface of the cover sheet as the extension portion moves relative to the first through hole and the second through hole.

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