TWI593518B - Torque wrench capable of coaxially adjusting the torque - Google Patents

Description

Torque wrench capable of adjusting the torque value coaxially

The invention relates to a torque wrench, in particular to a torque wrench capable of coaxially adjusting a torque value.

In the technical field of mechanical assembly, the use of bolts and nuts to lock various components is a fairly common method of attachment. However, because each person's feeling of strength is not the same, and some special combinations are not as tight as possible, so there is a torque wrench, so that each screw lock operation is even in different people's operations. Under the same, the same torque can be achieved.

Referring to FIG. 1 , a conventional torque wrench has a hand portion 50 and a working portion 60 that are perpendicular to each other. When the user wants to coarsely adjust the torque, a tool (for example, a hex wrench) must be used to insert the adjustment from the outer end of the hand 50. If the torque is to be finely adjusted, the work piece mounted on the working portion 60 is first unplugged. Then, an adjustment is inserted from the outer end of the working portion 60 using a tool (for example, a hex wrench).

Referring to FIG. 2, another conventional wrench has a hand 70 having a through hole 71 extending along the axial direction of the hand 70 and having a first end at the end of the through hole 71. The end portion 711 and the second end 712 of the first end 711 are disposed in the adjusting portion 80 of the hand portion 70. The adjusting portion 80 has an adjusting member 81 having a thread 811 and a through hole 812 at the center. a spring 82 that abuts against the adjusting member 81, that is, a first ratchet member 83 that abuts against the other end of the spring 82, and a second ratchet member 84 that engages the first ratchet member 83. The hole 812 extends through and connects the fine adjustment portion 813 of the first end 711 of the hand portion 70. When the conventional wrench is to be adjusted, the first end 711 of the hand portion 70 is rotated to drive the fine adjustment portion 813. When the fine adjustment portion 813 rotates, the adjustment member 81 is rotated to move the adjustment member toward the first end 711 or the second end 712. When moving toward the first end 711, the spring 82 is compressed. The first ratchet member 83 and the second ratchet member 84 are tightly engaged, and the torque value is increased; if the second end 712 is moved toward the second end 712 The spring 82 is relaxed to loosen the first ratchet member 83 and the second ratchet member 84, and the torque value is reduced.

However, the torque wrench of the prior art of FIG. 1 is 90°. When the operator measures the torque value of the wrench, the torque value is different from the torque value to be adjusted, and the position of the coarse adjustment position and the output torque are straight, and the adjustment is fine. The position of the torque value is the same as the position of the torque output, so when the coarse adjustment position is adjusted to be slightly closer to the position that the operator wants to adjust but there is still a slight difference from the predetermined torque, the fine adjustment position of the conventional wrench needs to be adjusted, however, because The position of the micro-adjustment of the conventional wrench is the same as the position of the output torque. Therefore, after testing the torque, the conventional torque wrench must be detached from the machine for measuring the torque, and the position of the output torque is adjusted after the micro-adjustment operation. The operation of measuring the torque with the mechanical connection of the measuring torque.

The conventional torque wrench of Fig. 1 must leave the machine for measuring the torque value. After adjusting the torque value, the position of the output torque is connected back to the machine for measuring the torque value, so that the torque value must be removed after the measurement. Adjustment, however, this reciprocating action is very inconvenient for the operator.

However, the conventional wrench of FIG. 2 only adjusts the torque value of the wrench in a rotating manner. When adjusting the torque value, it needs to be rotated for a long time to adjust to the position to be adjusted.

In view of this, the inventor has intensively explored the problems faced by the existing torque wrenches through years of experience in the development of related industries, and actively sought solutions. After long-term efforts and research, he finally succeeded in creating. A torque wrench capable of coaxially adjusting the torque value is a type capable of measuring the torque value, and can perform coarse adjustment and fine adjustment of the torque value while being assembled in the measuring torque without disassembly, so that the operator can more Adjust the wrench to the predetermined torque value for convenient and quick measurement of the torque value.

The main purpose of the present invention is to make the torque adjustment torque, the fine adjustment torque and the torque output position of the torque wrench into a coaxial state.

Another object of the present invention is to make the adjustment of the torque without disassembling the torque wrench from the torsion force measuring machine and then performing the micro adjustment operation.

The invention relates to a torque wrench capable of coaxially adjusting a torque value, comprising: a body having a hand-held portion, a working portion connecting the hand-held portion, and a through-hole extending through the hand-held portion and the working portion and extending substantially in a straight line The through hole has a first end located at the hand portion and a second end located at the working portion; a torque output unit is disposed in the through hole of the body and has an elastic member, and one end of the elastic member is a ratchet rotating member that is freely rotatable and movable, a ratchet fixing member that engages the ratchet rotating member and is non-rotatable, and a ratchet fixing member fixedly coupled to the ratchet rotating member and having one end thereof through the through hole a working piece extending from the second end; a coarse adjusting unit having a positioning portion opposite to the elastic member opposite to the ratchet rotating member and having a plurality of positioning portions at different heights and having a coarse adjustment through hole at the center and a non-rotatable coarse adjustment fixing member, and a coarse rotating hole which is freely rotatable and has a card abutting portion which can be engaged with a positioning portion and has a through hole at one end and a first end facing the first end of the through hole Twirl ; A fine adjustment means, having a resilient member disposed between said rotatable member and said ratchet while one having a central through-holes and fine adjustment of the trim fixing member non-rotatable, and screwed to a thread having a The fine adjustment screw of the fine adjustment fixing member and the one end of the first end facing the through hole has a fine adjustment rotating member for finely adjusting the rotating hole.

With the above components, since the coarse adjustment unit, the micro adjustment unit and the torsion output unit are located on the same axis, the torque adjustment value of the equivalent torque wrench is corrected, the coarse adjustment unit is adjusted, and the torque adjustment must be performed when the micro adjustment operation is adjusted. The wrench is detached from the torsion force measuring machine for adjustment and reciprocating and disassembling the action of the torque measuring machine, so that the operator can adjust the torque adjusting value and adjust the torque adjusting unit and the fine adjusting unit, and the operator is more convenient. And quickly adjust the torque value to the predetermined torque value.

Referring to FIG. 3 and FIG. 4 , the present invention is a torque wrench capable of coaxially adjusting a torque value, comprising: a body 10 having a hand-held portion 11 , a working portion 12 connecting the hand-held portion 11 , and a through-hand portion a through hole 13 extending in a straight line with the working portion 12, the through hole 13 having a first end 131 at the hand portion 11 and a second end 132 at the working portion 12; a torque output unit 20, In the through hole 13 of the body 10, there is an elastic member 21 and a ratcheting member 22, and the ratcheting member 22 is located at one end of the elastic member 21 for the elastic member 21 to be pushed and freely rotated and moved. a ratcheting member 23 that engages the ratcheting member 22 and is non-rotatable, and a working member 24 fixedly coupled to the ratcheting member 22 and having one end extending from the second end 132 of the through hole 13 And the working piece 24 has a connecting end 242 and a working end 243, and one end of the working piece 24 passes through the ratchet fixing member 23 and has a working piece perforation 241 at the connecting end 242, and then uses a pin A and a ratchet through hole 223 of the ratchet rotating member 22 and a working piece perforation 241 of the working member 24 The ratchet fixing member 23 is provided with at least one ratchet protrusion 233 fitted to the through hole recess 133 provided in the wall of the through hole 13. In the embodiment, the elastic member 21 is a coil spring, and the fine adjustment rotating member 42 is located in the elastic member 21.

The ratchet fixing member 23 has a plurality of fixing member convex teeth 232, and each of the fixing member convex teeth 232 has a fixing member vertical side 2321 and a fixing member oblique side 2322; the ratchet rotating member 22 has a plurality of rotating member convex portions. The teeth 222, and each of the rotating member teeth 222 has a rotating member vertical side 2233 and a rotating member oblique side 2222. The vertical edges 2321 of the fixing members and the vertical edges 2233 of the rotating members are respectively adhered to each other, and the oblique sides 2322 of the fixing members and the oblique sides 2222 of the rotating members are respectively adhered to each other.

A coarse adjusting unit 30 has a coarse adjusting member 31 opposite to the other end of the elastic member 21 with respect to the ratchet rotating member 22, and the coarse adjusting member 31 has a plurality of different heights The positioning portion 311, the coarse adjustment member 31 has a coarse adjustment fixed through hole 312 in the center and is non-rotatable, and a coarse adjustment member 32, and the coarse rotation member 32 is freely rotatable and has a card offset One The positioning portion 311 is abutting portion 321 , and the center of the coarse rotating member 32 has a coarse rotating hole 322 whose one end faces the first end of the through hole 13 and a coarse communication with the coarse rotating hole 322 The hole 323, and the coarse rotating member 32 further has a cap 33. The cap 33 has a hole 331, and the cap 33 is disposed at the first end 131 of the through hole 13, and the coarse rotating member 32 The outer side has a scribe 323 for the coarse rotating member 32 to pass through the cap 33. The end of the coarse adjusting member 31 facing the coarse rotating member 32 has an inclined end surface 313, and the positioning portion The 311 is disposed on the inclined end surface 313. The locking portion 321 of the coarse adjustment member 32 has a recess 3210, and the coarse adjustment member 31 is provided with at least one coarse adjustment protrusion 314. At least one through hole groove 133 on the wall of the hole 13; a fine adjustment unit 40 having a fine adjustment fixing member 41, and the fine adjustment fixing member 41 is disposed between the elastic member 21 and the ratchet rotating member 22, and the The center of the fine adjustment fixing member 41 has a through fine screw hole 411 and is non-rotatable, and a fine adjustment rotating member 42 has a thread 422. The fine adjustment screw 41 is screwed to the fine adjustment screw hole 411 of the fine adjustment fixing member 41, and the fine adjustment rotation member 42 faces the first end 131 of the through hole 13. The fine adjustment fixing member 41 is provided with at least one fine adjustment convex portion 412, and is fitted to At least one through hole groove 133 provided in the wall of the through hole 13 is provided.

The above is a component structure of a torque wrench capable of coaxially adjusting the torque value, and the actuation mode thereof is as follows: Referring to FIG. 5 to FIG. 7, when the operator measures the torque value, the workpiece 24 is connected. In the general measurement of the torque value, the torque value of the wrench is displayed when the torque is turned, and the torque wrench capable of coaxially adjusting the torque value can adjust the torque value after the rotation, and there are two kinds of adjustments of the present invention. A method of adjusting the torque value of a torque wrench with a torque value coaxially.

When it is determined that the value is significantly different from the value to be adjusted, the operator may first rotate the coarse rotating member 32 of the coarse adjusting unit 30 by using a hexagonal wrench X to make the card of the coarse rotating member 32. The abutting portion 321 is rotated, and when the positioning portion 311 of the coarse adjustment member 31 is reached, the groove of the abutting portion 321 can be resisted by the positioning portion 311 because each positioning portion 311 is located at a different height. When the groove of the abutting portion 321 is locked to the upper positioning portion 311, the distance between the coarse rotating member 32 and the coarse adjusting member 31 is relatively long, so that the coarse adjusting member 31 presses the elastic member 21, The elastic member 21 presses the ratchet fixing member 23 of the torsion output unit 20, and the force with which the ratchet fixing member 23 engages with the ratchet rotating member 22 is large.

When the operator wants to lower the torque value, the hexagonal wrench X can be rotated to the coarse rotating member 32, so that the locking portion 321 of the coarse rotating member 32 is rotated to the lower positioning portion 311 when moving to a lower position. When the positioning portion 311 is located, the coarse rotating member 32 is closer to the coarse adjusting member 31, so that the coarse adjusting member 31 is away from the elastic member 21, and the elastic member 21 is lightly pressed against the ratchet fixing member. The force of 23 causes the ratchet fixing member 23 to have a small force to mesh with the ratcheting member 22.

However, when the operator adjusts the coarse adjustment unit 30, if the torque value does not reach the predetermined value, a smaller hex wrench X' can be passed through the coarse adjustment through hole 312 of the coarse adjustment member 31 and The coarse adjustment hole 322 of the coarse adjustment rotating member 32 connects the smaller hexagonal wrench X' to the groove of the fine adjustment unit 40 located in the fine adjustment rotary member 42, and rotates the groove to start the fine adjustment rotary member 42 to start rotating. And the fine adjustment rotating member 42 drives the fine adjustment fixing member 41 to slide along the axial direction of the through hole 13; when the fine adjustment rotating member 42 moves toward the working member 24, the fine adjustment The fixing member 41 moves along the direction of the fine adjustment rotating member 42 toward the working member 24, causing the fine adjustment fixing member 41 to loosen the elastic member 21, and the ratchet fixing member 23 has less force to press the ratchet rotating member 22. .

When the fine adjustment rotating member 42 is moved upward, the fine adjustment fixing member 41 moves upwardly with the fine adjustment rotating member 42, and the fine adjustment fixing member 41 presses the elastic member 21 to rotate the ratchet of the torque output unit 20. The force of the piece 22 to press the ratcheting member 22 is greater.

Referring to FIG. 8 and FIG. 9, the present invention includes in another embodiment: a body 10 having a hand-held portion 11 , a working portion 12 connecting the hand-held portion 11 , and a through hole 13 extending through the hand-held portion 11 and the working portion 12 and extending substantially linearly The first end 131 of the hand-held portion 11 and the second end 132 of the working portion 12; a torque output unit 20 disposed in the through hole 13 of the body 10, having an elastic member 21 and an end portion of the elastic member 21 a ratcheting member 23 that is rotatably supported by the elastic member 21 and freely rotatable and movable, and a ratcheting member 23 that engages the ratcheting rotating member 22 and is non-rotatable, and is fixedly coupled to the ratcheting rotating member 22 a workpiece 24 extending from a second end 132 of the through hole 13; a coarse adjustment unit 30 having a pair of opposite ends of the elastic member 21 opposite to the ratchet rotating member 22 and having a plurality of different heights The positioning portion 311 has a coarse adjustment fixing hole 31 at the center and a non-rotatable fixed fixing member 31, and a coarse rotation member 32 which is freely rotatable and has a card corresponding to the positioning portion 311. The center of the rotating member 32 has a coarse rotation of one end facing the first end 131 of the through hole 13 hole.

When the operator adjusts the coarse adjustment unit 30, a smaller hexagonal wrench X' can be passed through the coarse adjustment through hole 312 of the coarse adjustment member 31 and the coarse rotation hole of the coarse adjustment member 32. 322, the smaller hex wrench X' is connected to the groove of the fine adjustment unit 40 located in the ratcheting rotating member 22, and the groove is rotated to start the rotation of the ratcheting rotating member 22, and the ratcheting rotating member 22 drives The fine adjustment fixing member 41 moves upward or downward along with the fine adjustment screw hole 411; when the ratchet rotating member 22 moves downward, the fine adjustment fixing member 41 moves downward with the ratchet rotating member 22, so that The fine adjustment fixing member 41 presses the elastic member 21 to press the elastic member 21 against the ratchet fixing member 23 of the torque output unit 20, so that the ratchet fixing member 23 has a smaller force for pressing the ratchet rotating member 22.

Moreover, the torque output unit 20, the coarse adjustment unit 30 and the fine adjustment unit 40 of the torque wrench capable of coaxially adjusting the torque value are all located on the same axis, so that the operator measures the torque wrench from the work piece 24 of the torque output unit 20. When the torque adjustment value must be adjusted after the torque adjustment unit 40, the workpiece 24 is not required to be detached from the torque measuring device, and the micro adjustment unit 40 is adjusted, and the torque value of the torque wrench can be measured simultaneously. Adjust the torque wrench to make it easier for the operator to quickly adjust the torque value to the predetermined torque value.

"Knowledge"

50‧‧‧Handheld Department

60‧‧‧Working Department

70‧‧‧Handheld Department

71‧‧‧through holes

711‧‧‧ first end

712‧‧‧ second end

80‧‧‧Regulatory Department

81‧‧‧Adjustment

811‧‧‧ thread

812‧‧‧through hole

83‧‧‧First ratchet

84‧‧‧Second ratchet

"This Creation"

10‧‧‧ Ontology

11‧‧‧Handheld Department

12‧‧‧Working Department

13‧‧‧Tongkong

131‧‧‧ first end

132‧‧‧ second end

133‧‧‧through hole groove

20‧‧‧Torque output unit

21‧‧‧Flexible parts

22‧‧‧ ratchet rotating parts

222‧‧‧Rotating teeth

2233‧‧‧Rotating parts vertical side

2222‧‧‧Rotating bevel

223‧‧‧ ratchet through hole

23‧‧‧ ratchet fasteners

232‧‧‧Fixed teeth

2321‧‧‧Fixed vertical sides

2322‧‧‧Fixed bevel

233‧‧‧ ratchet convex

24‧‧‧Workpieces

241‧‧‧Workpiece perforation

30‧‧‧Rough adjustment unit

31‧‧‧ coarse adjustment parts

311‧‧‧ Positioning Department

312‧‧‧ coarse adjustment fixed through hole

313‧‧‧ oblique end face

314‧‧‧ coarse adjustment convex

32‧‧‧ coarse adjustment rotating parts

321‧‧‧ Cards

3210‧‧‧ Groove

322‧‧‧ coarse adjustment hole

323‧‧‧ coarse adjustment through hole

33‧‧‧Cap

331‧‧‧ hole

40‧‧‧Micro adjustment unit

41‧‧‧ fine-tuning fixtures

411‧‧‧ fine-tuning screw holes

42‧‧‧ fine-tuning rotating parts

421‧‧‧ fine-tuning the rotating hole

422‧‧‧ thread

A‧‧ ‧ sales

X‧‧‧ hex wrench

X’‧‧‧ hex wrench

1 is a perspective view of a conventional torque wrench.

2 is a schematic cross-sectional view of another conventional torque wrench.

Figure 3 is an exploded view of the preferred embodiment of the present invention.

4 is a perspective cross-sectional view of a preferred embodiment of the present invention.

Figure 5 is a plan cross-sectional view showing a large torque value of a preferred embodiment of the present invention.

Figure 6 is a plan cross-sectional view showing a small torque value of a preferred embodiment of the present invention.

Figure 7 is a plan cross-sectional view of the micro-adjustment unit of the present invention in accordance with a preferred embodiment of the present invention.

Figure 8 is a perspective exploded view of another preferred embodiment of the present invention.

Figure 9 is a plan sectional view showing another preferred embodiment of the present invention.

10‧‧‧ Ontology

11‧‧‧Handheld Department

12‧‧‧Working Department

131‧‧‧ first end

132‧‧‧ second end

14‧‧‧ Cap

141‧‧‧ hole

20‧‧‧Torque output unit

21‧‧‧Flexible parts

22‧‧‧ ratchet rotating parts

23‧‧‧ ratchet fasteners

24‧‧‧Workpieces

30‧‧‧Rough adjustment unit

31‧‧‧ coarse adjustment parts

32‧‧‧ coarse adjustment rotating parts

40‧‧‧Micro adjustment unit

41‧‧‧ fine-tuning fixtures

42‧‧‧ fine-tuning rotating parts

Claims (13)

A torque wrench capable of coaxially adjusting a torque value, comprising: a body having a hand-held portion, a working portion connecting the hand-held portion, and a through-hole extending through the hand-held portion and the working portion and extending substantially in a straight line The hole has a first end located at the hand portion and a second end located at the working portion; a torque output unit is disposed in the through hole of the body, has an elastic member, and is adjacent to one end of the elastic member and is extendable a ratchet rotating member that axially moves the hole, a ratchet fixing member that engages the ratchet rotating member and is non-rotatable; a coarse adjusting unit having a opposite end of the elastic member against the ratchet rotating member and having a plurality of coarse adjustment fixing members which are located at different heights and have a coarse adjustment fixed through hole at the center and are non-rotatable, and a coarse rotation member which is freely rotatable and has a card capable of abutting against the positioning portion. The center of the rotating member has a coarse rotating hole with one end facing the first end of the through hole and a coarse adjusting hole communicating with the coarse rotating hole; a fine adjusting unit having a resilient member and the ratchet rotating member Between The center has a fine adjustment fixing member passing through one of the fine adjustment screw holes and being non-rotatable, and a fine adjustment rotary hole having a thread to fit the fine adjustment screw hole of the fine adjustment fixing member and facing the one end of the through hole Fine-tuning the rotating parts. The torque wrench capable of coaxially adjusting the torque value according to claim 1 further comprises a working piece fixedly coupled to the ratchet rotating member and having one end extending from the second end of the through hole. The torque wrench capable of coaxially adjusting the torque value according to claim 1 further has a cap disposed at the first end of the through hole, the outer side of the coarse rotating member having a knurl, the cap having a hole, The coarse rotating member is passed through. The torque wrench capable of coaxially adjusting the torque value according to claim 1, wherein the one end of the coarse adjustment member facing the coarse adjustment member has an inclined end surface, and the positioning portions are disposed on the inclined end surface, the coarse adjustment The engaging portion of the rotating member has a groove, and the positioning portion of the coarse adjusting member has a shape corresponding to the groove of the engaging portion. The torque wrench capable of coaxially adjusting the torque value according to claim 1, wherein the coarse adjustment fixing member, the fine adjustment fixing member and the ratchet fixing member are respectively provided with at least one convex portion, and is fitted to the through hole wall. At least one groove on the upper. A torque wrench capable of coaxially adjusting a torque value according to claim 1, wherein one end of the working member passes through the ratchet fixing member, and a pin is fixedly connected to the ratchet rotating member. A torque wrench capable of coaxially adjusting a torque value according to claim 1, wherein the fine adjustment fixing member is threadedly engaged with the fine adjustment rotating member. A torque wrench capable of coaxially adjusting a torque value, comprising: a body having a hand-held portion, a working portion connecting the hand-held portion, and a through-hole extending through the hand-held portion and the working portion and extending substantially in a straight line The hole has a first end located at the hand-held portion and a second end located at the working portion; a torque output unit is disposed in the through hole of the body, and has an elastic member, and one end of the elastic member is pushed by the elastic member a ratcheting member that is freely rotatable and movable, a ratcheting member that engages the ratcheting rotating member and is non-rotatable, a second end that is fixedly coupled to the ratcheting rotating member and has one end of the through hole An extended working unit; a coarse adjusting unit having a positioning portion opposite to the elastic member opposite to the ratchet rotating member and having a plurality of positioning portions at different heights and having a coarse fixed through hole at the center and being non-rotatable Coarse adjustment And a coarse rotating member capable of being engaged with a positioning portion, the coarse rotating member having a coarse rotating hole at one end facing the first end of the through hole. The torque wrench capable of coaxially adjusting the torque value according to claim 8 further comprises a working piece fixedly coupled to the ratchet rotating member and having one end extending from the second end of the through hole. The torque wrench capable of coaxially adjusting the torque value according to claim 8 further has a cap disposed at the first end of the through hole, the outer side of the coarse rotating member having a mark, the cap having a hole, The coarse rotating member is passed through. The torque wrench capable of coaxially adjusting the torque value according to claim 8, wherein the coarse rotating member has an inclined end surface facing the one end of the coarse adjusting member, and the positioning portions are disposed on the inclined end surface, the coarse adjustment The engaging portion of the rotating member has a groove, and the positioning portion of the coarse adjusting member has a shape corresponding to the groove of the engaging portion. The torque wrench capable of coaxially adjusting the torque value according to claim 8, wherein the coarse adjustment member and the ratchet fixing member are respectively provided with at least one convex portion, and is fitted to at least one concave portion disposed on the through hole wall. groove. A torque wrench capable of coaxially adjusting a torque value according to claim 8, wherein one end of the working member passes through the ratchet fixing member, and a pin is fixedly connected to the ratchet rotating member.