TWI729619B - Torque screwdriver device - Google Patents

Abstract

A torque screwdriver device is provided, including: a hosing, including a barrel and a cover coveringly connected with the barrel; an input shaft portion, rotatably assembled with the barrel and protrusive beyond the cover, configured to be detachably assembled with a rotation tool; an output shaft portion, rotatably assembled with the barrel and including a socket mechanism configured for insertion of an object; a torque clutch mechanism, including a first engaging portion and a second engaging portion which are clutchably engagable with each other, an elastic preload member and a first bearing mechanism, the first engaging portion being disposed on the input shaft portion, the second engaging portion being disposed on the output shaft portion, the elastic preload member biasing the one of the first and second engaging portions, the first bearing mechanism including a stop member abutted against the hosing, a support member located between the elastic preload member and the stop member and at least one low friction member disposed between the stop member and the support member, the support member being movable relative to the at least one low friction member.

Description

Torque screwdriver device

The invention relates to a torsion screwdriver device.

Sleeve tools can be used to tighten or loosen fasteners, such as screws, nuts or similar structures. However, the commonly used conventional sleeve tool is a one-piece cylindrical part without any torque control mechanism, which is likely to cause excessive torque after tightening and damage the fastener.

In addition, conventional socket tools are equipped with a recessed hole. If you want to use it with a power tool, you must first connect it to the power tool through an extension rod, and then the socket tool is sleeved on the extension rod. It is simple and quick to apply to various power tools, which is extremely inconvenient to use.

Therefore, it is necessary to provide a novel and progressive torque driver device to solve the above-mentioned problems.

The main purpose of the present invention is to provide a torque screwdriver device, which can be adapted to various driving tools and is easy to replace.

To achieve the above object, the present invention provides a torsion screwdriver device, which includes: a shell portion, including a barrel and a cover that covers the barrel; an input shaft portion is rotatably provided on the cover and protrudes The cover is detachably assembled with a rotating tool; an output shaft is rotatably arranged on the barrel and is provided with a socket structure for inserting an object; a torsion clutch mechanism, including a clutch A first engaging portion and a second engaging portion that are ground-engaged, an elastic pre-compression member, and a first bearing member, the first engaging portion is provided on the input shaft portion, and the second engaging portion is provided on the output A shaft portion, the elastic pre-compression member presses one of the first engagement portion and the second engagement portion, the first bearing member includes a thrust member abutting against the shell portion, and a thrust member located on the elastic pre-compression member. The pushing member between the pressing member and the pushing member, and at least one low friction member abutting between the pushing member and the pushing member, the pushing member can move relative to the at least one low friction member.

1: Torque screwdriver device

10: Shell

11: Barrel

111: The first limit protrusion

40: Torque clutch mechanism

41: The first meshing part

42: The second meshing part

43: Elastic preload

12: cover

121: second limit convex part

122: screw hole

13: Stop screw

20: Input shaft

30: Output shaft

31: Sleeve structure

32: The first shaft

321: First key tooth structure

33: Kit

331: Second key tooth structure

332: disc

333: Piercing

335: Card

34: oblique shoulder

44: The first bearing member

441: Thrust

442: push piece

443: Low friction parts

444: groove

50: The first limit ring

60: Bush

70: The second bearing member

80: second limit ring

81: Slope

90: Surface non-slip structure

91: Marking Department

100: Rotating tool

101: Object

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

Figure 2 is an exploded view of a preferred embodiment of the present invention.

Figure 3 is a cross-sectional view of a preferred embodiment of the present invention.

4 to 5 are schematic diagrams of the operation of a preferred embodiment of the present invention.

The following examples are only used to illustrate the possible implementation aspects of the present invention, but they are not intended to limit the scope of protection of the present invention.

Please refer to FIGS. 1 to 5, which show a preferred embodiment of the present invention. The torque driver device 1 of the present invention includes a shell portion 10, an input shaft portion 20, an output shaft portion 30 and a torque clutch mechanism 40.

The shell portion 10 includes a cylinder body 11 and a cover member 12 that covers the cylinder body; the input shaft portion 20 is rotatably disposed on the cover member and protrudes from the cover member for supplying a rotating tool 100 (manual , Pneumatic or electric Tool) is detachably assembled; the output shaft portion 30 is rotatably arranged on the barrel and is provided with a socket structure 31 for inserting an object 101 (tool head, extension rod, sleeve, etc.); the torsion clutch The mechanism 40 includes a first engaging portion 41 and a second engaging portion 42 that can be disengageably engaged, an elastic pre-compression member 43, and a first bearing member 44. The first engaging portion is provided on the input shaft portion, The second engaging portion is disposed on the output shaft portion, the elastic pre-compression member is pressed against one of the first engaging portion and the second engaging portion, and the first bearing member includes one abutting against the shell portion A thrust piece 441, a thrust piece 442 located between the elastic pre-compression piece and the thrust piece 441, and at least one low friction piece 443 abutting between the thrust piece and the thrust piece 443, the The pushing member can move relative to the at least one low-friction member. Therefore, it can be adapted to various driving tools and is easy to replace.

The cover 12 is screwed to the barrel 11 or connected in any adjustable manner. The outer surface of the barrel is provided with a first limiting protrusion 111, and the inner surface of the cover is provided with a connection between the barrel and the cover. The second limiting protrusion 121 blocked in the away direction can limit the limit torque value and prevent the cover from unintended separation from the barrel. The first limiting protrusion is a ring or protrusion embedded (also integrally formed) on the barrel body, and the second limiting protrusion is an integrally formed flange of the cover. The cover has a screw hole 122 through it, and a stop screw 13 is screwed in the screw hole and resists the barrel, so that the torque does not change randomly. The cover and the barrel are each provided with a surface non-slip structure 90 for easy rotation adjustment; the cover and the barrel are respectively provided with a corresponding indicator 91 (such as a scale), which can clearly know the magnitude of the torque.

At least one of the thrust member 441 and the thrust member 442 (preferably both) is provided with a groove 444 for accommodating the at least one low-friction member 443. The groove is preferably a ring groove to reduce friction. .

The output shaft 30 further includes a first shaft 32 and a sleeve 33 set on the first shaft. The sleeve rotates with the first shaft and sleeves on the second engaging portion 42. The first shaft is rotatably inserted into the input shaft portion 20, the first shaft is provided with a first key tooth structure 321, and the inner surface of the sleeve is provided with a second key engaged with the first key tooth structure牙结构331。 Tooth structure 331. The kit has a first limit The positioning ring 50, the first limiting ring abuts against the elastic pre-compression member 43 and the sleeve axially, so as to maintain the stability of the elastic pre-compression member. The kit includes a disc 332 provided with at least one perforation 333, and the second engaging portion 42 includes at least one movably received in the at least one perforation and abutting between the input shaft portion and the first limiting ring Between the card 335. In this embodiment, the kit includes a plurality of the perforations, and the second engaging portion 42 includes a plurality of the clamping members 335.

The barrel 11 is further provided with a bushing 60 which is sleeved on the output shaft portion 30 and located between the barrel and the first bearing member 44. The bushing can be regarded as a part of the shell. The bushing is preferably a copper bushing, and the friction is small. Preferably, the input shaft portion 20 is sleeved with a second bearing member 70 which is located between the cover 12 and the first engaging portion 41 to reduce frictional resistance. The output shaft portion further includes an oblique shoulder 34 that tapers toward the input shaft portion 20, and the oblique shoulder is sleeved with a second limiting ring 80, and the second limiting ring abuts against the elastic pre-compression member 43 axially , The inner surface of the second limit ring is provided with an inclined surface 81 with a shape corresponding to the inclined shoulder, which reduces the contact and frictional resistance with the first bearing member, and can stabilize the output shaft portion.

In operation, when a workpiece (such as a screw) is tightened and the torsion force is greater than the elastic force of the elastic pre-compression member 43, the plurality of clamping members 335 rotates away from the plurality of perforations, thereby achieving a constant torque output without damage The artifact.

20: Input shaft

30: Output shaft

332: disc

335: Card

100: Rotating tool

101: Object

Claims (3)

A torsion screwdriver device includes: a shell, including a barrel and a cover for connecting the barrel; an input shaft, rotatably provided on the cover and protruding from the cover for supplying a The rotating tool is detachably assembled; an output shaft part is rotatably arranged on the barrel and is provided with a socket structure for inserting an object; a torsion clutch mechanism including a first engaging part that can be engaged and disengaged And a second engaging portion, an elastic pre-compression member, and a first bearing member, the first engaging portion is provided on the input shaft portion, the second engaging portion is provided on the output shaft portion, the elastic pre-compression member To press against one of the first engaging portion and the second engaging portion, the first bearing member includes a thrust member abutting against the shell portion, and a thrust member located between the elastic pre-compression member and the thrust member And at least one low-friction piece abutting between the thrust piece and the thrust piece, the thrust piece can move relative to the at least one low friction piece; wherein the barrel is additionally provided with a lining The bushing is a copper bushing, the bushing is sleeved on the output shaft portion and located between the cylinder body and the first bearing member; the cover is screwed to the cylinder body, and the cylinder body is provided with an outer surface There is a first limiting protrusion, the inner surface of the cover is provided with a second limiting protrusion that can be blocked in the direction away from the barrel and the cover; the first limiting protrusion is embedded in The ring member of the barrel, the second limiting protrusion is integrally formed on the flange of the cover member; at least one of the thrust member and the thrust member is provided with a recess for accommodating the at least one low friction member Groove; the output shaft includes a first shaft and a sleeve set on the first shaft, the sleeve rotates with the first shaft and sleeves on the second engaging portion; the first shaft The input shaft portion can be relatively rotatably inserted, a first key tooth structure is provided around the first shaft member, and a second key tooth structure meshing with the first key tooth structure is provided on the inner surface of the sleeve; the sleeve is another sleeve A first limiting ring is provided, and the first limiting ring abuts against the elastic pre-compression member and the sleeve axially; the sleeve includes a hole provided with at least one perforation The second engaging portion includes at least one clamping member movably accommodated in the at least one through hole and abutting between the input shaft portion and the first stop ring; the input shaft portion is sleeved with a Two bearing members, the second bearing member is located between the cover and the first engaging part; the cover is penetrated with a screw hole, and a set screw is screwed in the screw hole and abuts the barrel. The torque driver device according to claim 1, wherein the barrel is further provided with a bushing, the bushing is sleeved on the output shaft portion and located between the barrel and the first bearing member. The torque driver device according to any one of claims 1 to 2, wherein the output shaft portion further includes an oblique shoulder that tapers toward the input shaft portion, the oblique shoulder sleeve is provided with a second limiting ring, and the second The limiting ring abuts against the elastic pre-compression member axially, and the inner surface of the second limiting ring is provided with an inclined surface whose shape corresponds to the inclined shoulder.

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