TWI805390B - Torsion tool - Google Patents

Abstract

A torsion tool is provided, including: a barrel; a first member disposed at one end of the barrel, including at least one first engaging portion; a second member, disposed in the barrel, including at least one second engaging portion, on a motion path of the second member, the at least one second engaging portion and the at least one first engaging portion being releasably engaged with each other; an elastic mechanism, including a first fixation portion disposed in the barrel and a plurality of elastic arms, the plurality of elastic arms being independently fixed to the first fixation portion and corresponding to each other, the second member being located between and configured to radially expand the plurality of elastic arms; wherein when there is a torsion force greater than a preset torque value between the at least one second engaging portion and the at least one first engaging portion, the second member urges and radially expands the plurality of elastic arms so that the at least one second engaging portion and the at least one first engaging portion are relatively slipable and disengageable.

Description

torque tool

The invention relates to a torque tool.

In general operations, sleeves are often used to disassemble and assemble mechanical workpieces (such as screws, nuts, etc.). However, the torque value of the sleeve in the prior art is fixed and cannot be adjusted according to the requirement, which makes it difficult for the user to control the force, which causes inconvenience in disassembly and assembly, and easily damages the workpiece.

Therefore, torque tools were born accordingly. One end of the body of the conventional torque tool is provided with a driving head, and a torque component is provided in the body of the torque tool to control the torque within a set value and avoid damage to the workpiece. However, the torsion components of the conventional torsion tools can only provide a relatively limited range of torque control, and the application range of disassembly and assembly is relatively limited, and the elastic parts of the torsion components are more likely to be broken.

Therefore, it is necessary to provide a novel and progressive torque tool to solve the above problems.

The main purpose of the present invention is to provide a torque tool that can avoid damage to the driven part or the workpiece.

In order to achieve the above object, the present invention provides a torque tool, comprising: a barrel; a first part, which is arranged at one end of the barrel, including at least one first engaging part; a second part, which is arranged at the end of the barrel The interior includes at least one second engaging portion, and the at least one second engaging portion is releasably engaged with the at least one first engaging portion on one of the moving paths of the second component; an elastic force mechanism includes an The first fixing part and the plurality of elastic arms inside the cylinder, the plurality of elastic arms are fixed to the first fixing part and are independently diametrically opposed to each other, and the second part can radially press the plurality of elastic arms against between the plurality of elastic arms; wherein, when the torsion force received between the at least one second engaging portion and the at least one first engaging portion is greater than a torque setting value, the second component pushes the plurality of elastic arms And the at least one second engaging portion is disengaged from the at least one first engaging portion.

1,1a: Torque tool

10,10a: Barrel

20,20a: first part

21,21a: the first engaging part

22a: Shaft

23a: Working head

30,30a: Second part

31, 31a: Second engaging part

32:Engagement

33,33a: Arrival

331: curved surface

332: body

333:Elastomer

334: storage tank

40: elastic mechanism

41: The first fixed part

411: the first fixing part

412: Embedded seat

413: Pressed piece

414: Embedding

415: through hole

42: spring arm

421: horizontal section

422: Longitudinal section

423: chamfer

43: screw

44: board

441: perforation

442: Bevel

50: Fasteners

60: Nut

Fig. 1 is a perspective view of the first preferred embodiment of the present invention.

Fig. 2 is an exploded view of the first preferred embodiment of the present invention.

Fig. 3 is a sectional view of the engagement state of the first preferred embodiment of the present invention.

Fig. 4 is a cross-sectional view of the state about to be engaged and disengaged according to the first preferred embodiment of the present invention.

Fig. 5 is an exploded view of another aspect of the first preferred embodiment of the present invention.

Fig. 6 is an exploded view of another aspect of the first preferred embodiment of the present invention.

Fig. 7 is a perspective view of the second preferred embodiment of the present invention.

Fig. 8 is an exploded view of the second preferred embodiment of the present invention.

Fig. 9 is a partial sectional view of the second preferred embodiment of the present invention.

FIG. 10 is a partially enlarged view of FIG. 9 .

The following examples illustrate possible implementations of the present invention, but are not intended to limit the scope of protection of the present invention.

Please refer to FIGS. 1 to 4 , which show a first preferred embodiment of the present invention. The torque tool 1 of the present invention includes a barrel 10 , a first component 20 , a second component 30 and an elastic force mechanism 40 .

The first part 20 is located at one end of the barrel 10, and the first part 20 includes at least one first engaging portion 21; the second part 30 is arranged inside the barrel 10, and the second part 30 includes at least one The second engaging portion 31, on a moving path of the second member 30, the at least one second engaging portion 31 is releasably engaged with the at least one first engaging portion 21; the elastic mechanism 40 includes a The first fixing portion 41 and the plurality of elastic arms 42 inside the barrel 10 are fixed to the first fixing portion 41 and are independently diametrically opposed to each other, and the second member 30 can radially force the plurality of elastic arms 42 to The elastic arms 42 lean against between the plurality of elastic arms 42; wherein, when the torsion force between the at least one second engaging portion 31 and the at least one first engaging portion 21 is greater than a torque setting value, the The second component 30 forces the plurality of elastic arms 42 and makes the at least one second engaging portion 31 jump out of engagement with the at least one first engaging portion 21 (as shown in FIG. 4 ), thereby avoiding damage to the driven part or the workpiece . The at least one first engaging portion 21 and the at least one second engaging portion 31 can be a matching inclined surface, an arc surface or any geometric shape that can be relatively jumpily engaged.

In this embodiment, the first component 20 is replaceably assembled on the cylinder 10, and disassembly or driving tools of different sizes, shapes, or functions can be replaced according to the requirements of different workpieces. Preferably, one end of the first part 20 is set as a square rod or other non-circular rod, which can be used for assembly such as a socket tool; the other end of the torque tool 1 can be used for assembly such as a driving tool (manual or power tool). ) of the drive shaft.

The second component 30 includes an engaging piece 32 provided with the at least one second engaging portion 31 and an abutting piece 33 abutted between the engaging piece 32 and the plurality of elastic arms 42, and the abutting piece 33 can radially multiple bullets The arms 42 lean against between the plurality of elastic arms 42 . Preferably, the supporting member 33 includes an arc surface 331 extending between the plurality of elastic arms 42 in a continuous arc shape. For example, the arc surface 331 is a circular arc surface, which has low friction, smooth movement, and evenly tensions the plurality of elastic arms. 42. The resisting piece 33 and the engaging piece 32 are, for example, simply in contact with each other without being fixed, screwed, clamped or engaged in other ways. In another form shown in Figures 5 and 6, the resisting piece 33a includes a resisting body 332 and an elastic body 333 embedded with the resisting body 332, for example, the resisting body 332 includes a receiving groove 334 , the elastic body 333 is partially received in the receiving groove 334 . The elastic body 333 can be made of rubber or other suitable materials to provide a buffer between the engagement member 32 and the contact body 332 (there may be a state of contact or non-contact) and avoid loosening and unnecessary impact.

In this embodiment, the first fixing part 41 includes a first fixing part 411 connected to the barrel 10, a seat 412 abutting on one side of the first fixing part 411 and a seat 412 fixed to the seat. The pressing piece 413 of the seat 412, each elastic arm 42 includes a transverse section 421 embedded in the nest 412 and pressed and clamped on the nest 412 by the pressing piece 413, thereby, manufacturing, assembly and disassembly are easy, and the structure Strong and stable. Wherein, each elastic arm 42 further includes a longitudinal section 422 extending toward the second component 30 and abutting against the second component 30, the transverse section 421 protrudes laterally from the longitudinal section 422, and is T-shaped, L-shaped, cross-shaped or other configurations. Preferably, the horizontal section 421 protrudes laterally from both sides of the vertical section 422 , which can strengthen the combination of the plurality of elastic arms 42 and the stability of the overall structure, and the plurality of elastic arms 42 are not easy to break.

In detail, the seat 412 includes a plurality of slots 414 extending in parallel, and each of the transverse sections 421 is flushly embedded in one of the slots 414, which is conducive to uniform tensioning of the plurality of elastic arms 42 and the accuracy of the torque setting value. ; At least one or a plurality of fasteners 50 screw the pressure piece 413 to the socket 412, which is stable and easy to assemble and disassemble; the pressure piece 413 includes a through hole 415, and the plurality of elastic arms 42 and the screw pass through the through hole 415 .

The elastic mechanism 40 further includes a screw 43 and a plate 44, the screw 43 passes through the first fixing part 411, the seat 412 and the pressing part 413, and the plurality of elastic arms 42 face the second part 30 protruding through the board piece 44. The screw 43 is screwed to the plate 44 , and the degree to which the plurality of elastic arms 42 are allowed to protrude from the plate 44 can be adjusted. The plate 44 includes a plurality of perforations 441 pierced by the plurality of elastic arms 42 , and each of the perforations 441 includes a slope 442 between the elastic arms 42 and the cylinder 10 and is gradually expanding. The slope 442 A margin space is provided for the elastic arm 42 to swing due to radial tension. Preferably, the elastic mechanism 40 further includes a nut 60 screwed on the screw 43 , the nut 60 is located between the plate 44 and the seat 412 , between the screw 43 and the plate 44 When separated, it remains on the first fixing portion 41 and will not fall off; the nut 60 is thinner than the pressing piece 413 and is located in the through hole 415, which does not affect the moving stroke of the plate 44 on the screw 43 ; Each elastic arm 42 includes a chamfer 423 against the second component 30 , with low friction, smooth movement, and balanced tensioning of the plurality of elastic arms 42 .

Please refer to Fig. 7 to 10, it shows the second preferred embodiment of the present invention, and above-mentioned first embodiment is different in that, the torque tool 1a of this second preferred embodiment is a torque wrench, and the first part 20a includes a shaft 22a rotatably connected to the barrel 10a and a working head 23a exposed to the barrel 10a, wherein rotatable includes rotating around an axis or swinging. The shaft 22a includes the first engagement portion 21a, and the barrel 10a is used as a wrench body and can be a single-piece or multi-piece structure. The first engaging portion 21a is releasably engaged with the second engaging portion 31a of the second component 30a, and the first engaging portion 21a and the second engaging portion 31a are preferably rollers. Wherein, the first component 20a includes a ratchet working part, and the working head 23a is a ratchet head, or other assembly tool head for disassembly or driving.

1: Torque tool

10: Barrel

20: First Part

Claims (9)

A torque tool, comprising: a barrel; a first part, arranged at one end of the barrel, including at least one first engaging part; a second part, arranged inside the barrel, including at least one second engaging part part, on a moving path of the second part, the at least one second engaging part is releasably engaged with the at least one first engaging part; an elastic mechanism includes a first a fixing part and a plurality of elastic arms, the plurality of elastic arms are fixed to the first fixing part and are independently diametrically opposed to each other, and the second part can radially press the plurality of elastic arms and abut against between the plurality of elastic arms; Wherein, when the torsion force between the at least one second engaging portion and the at least one first engaging portion is greater than a set torque value, the second component will force the plurality of elastic arms and make the at least one second engaging portion part and the at least one first engaging part jump out of engagement; wherein the first fixing part includes a first fixing part connected to the cylinder part, a seat abutting on one side of the first fixing part and a fixed To the pressing piece of the socket, each of the elastic arms includes a transverse section embedded in the socket and pressed and clamped on the socket by the pressing piece. The torque tool according to claim 1, wherein the second component includes an engaging piece provided with the at least one second engaging portion and an abutting piece between the engaging piece and the plurality of elastic arms, the abutting piece A member can radially press the plurality of elastic arms against between the plurality of elastic arms. The torque tool as claimed in claim 2, wherein the resisting member includes an arc surface extending between the plurality of elastic arms in a continuous arc shape. The torque tool according to claim 1, wherein each of the elastic arms further includes a longitudinal section extending toward the second component and abutting against the second component, and the transverse section protrudes laterally from the longitudinal section. The torque tool according to claim 1, wherein the elastic mechanism further includes a screw and a plate, the screw passes through the first fixing piece, the nest and the pressure piece, the screw and the plate Screwed, the plurality of elastic arms protrude from the plate towards the second component. The torque tool as claimed in claim 5, wherein the plate includes a plurality of perforations pierced by the plurality of elastic arms, and each of the perforations includes a slope between the elastic arm and the cylinder and is gradually expanding . The torque tool according to claim 5, wherein the elastic mechanism further includes a nut screwed on the screw member, and the nut is located between the plate member and the socket. The torque tool according to claim 6, wherein the second component includes an engaging piece provided with the at least one second engaging portion and an abutting piece between the engaging piece and the plurality of elastic arms, the abutting piece A piece can radially press the plurality of elastic arms against between the plurality of elastic arms; the abutting member includes an arc surface extending in a continuous arc between the plurality of elastic arms; the arc surface is an arc surface; the The socket includes a plurality of sockets extending in parallel, and each of the transverse sections is flushly embedded in one of the sockets; at least one fastener is used to screw the pressure piece to the socket; the pressure piece includes a through hole, and the multiple The elastic arm and the screw pass through the through hole; each elastic arm further includes a longitudinal section extending toward the second part and abutting against the second part, and the transverse section extends laterally from two sides of the longitudinal section. The elastic mechanism further includes a nut screwed on the screw, the nut is located between the plate and the seat; the nut is thinner than the pressure piece and is located in the through hole. The torque tool as claimed in any one of claims 1 to 8, wherein each of the elastic arms includes a chamfered portion abutting against the second component.

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