TWM541927U - Torque wrench structure - Google Patents

Description

Torque wrench structure

This creation is about a tool, especially a torque wrench structure.

For example, in U.S. Patent No. 8,245,606, a torque wrench includes a hollow tube, a driving rod pivoted on the hollow tube, and a driving rod with a driving head; a roller carrier is slidably disposed on the hollow tube and utilized a connecting member is pivotally connected to the driving rod opposite to one end of the driving head; a stud is mounted to the roller carrier; a compression spring is sleeved to the protruding portion of the stud; and an adjusting device is disposed on the hollow tube to drive The other end of the rod is used to abut the compression spring, and the compression degree of the compression spring can be adjusted by threading to adjust the torque value of the torque wrench.

However, during the operation of the torque wrench, the stud is slipped in the hollow tube due to the reaction force of the screw member being fed back to the torque wrench, in order to avoid excessive friction between the stud and the inner wall of the hollow tube. Lubricating oil is often added between the stud and the hollow tube, but the lubricating oil will gradually decrease with time, and the lubricating effect is gradually reduced, which affects the torque transmitting effect of the torque wrench.

Moreover, the protruding portion of the stud provides a compression spring sleeve, and in order to make the compression spring easy to be sleeved on the stud, the protruding portion has an outer diameter slightly smaller than the inner diameter of the compression spring, but the stud A gap is created between the compression spring and the compression spring, so that the compression spring cannot be mounted on the axis of the stud, and the sway may occur. When the torque wrench is operated, the torque transmission performance of the torque wrench is also affected.

In addition, the hollow tube must be heat treated to increase its rigidity and hardness during processing. However, during the heat treatment, thermal deformation may occur, resulting in bending deformation of the hollow tube, so that the inner diameter of the hollow tube cannot be consistent. When the compression spring is disposed in the hollow tube, when the torque wrench is operated, the center of the compression spring may deviate from the axis of the hollow tube, which easily affects the torque transmission performance of the torque wrench. Therefore, how to improve the friction between the stud and the hollow tube and the processing of the hollow tube has to be solved by relevant industry players.

In order to solve the above problems, an embodiment of the present invention provides a torque wrench structure, which is disposed between an outer tube and a top member by a kit, thereby reducing the contact area between the top holding member and the sleeve, and reducing the friction between each other. When the torque wrench is operated, the sliding effect of the top holding member is smoother, and the torque transmission performance of the torque wrench structure of the present invention is increased. Furthermore, by replacing the hardness and rigidity of the outer tube by the heat-treated kit, the disadvantages of the conventional outer tube being thermally deformed during the manufacturing process are improved.

An embodiment of the present invention provides a torque wrench structure, comprising: an outer tube having an accommodating space in the axial direction; a driving member having a driving head at one end and a connecting end at the other end, the driving member pivoting The utility model is disposed at one end of the outer tube, the connecting end extends into the accommodating space; a top holding member is slidably disposed in the accommodating space and connected to the connecting end; and a kit is disposed between the outer tube and the top holding member; A torque adjusting device is disposed on the outer tube and different from one end of the driving member, and operates the torque adjusting device to adjust the torque value.

Preferably, the inner edge of the sleeve has a contact portion in a discontinuous contact relationship with the contact member.

Preferably, the contact portion is in point contact with the top member.

Preferably, the kit is a spring.

Preferably, the holding member has a pushing portion and a correcting portion protruding from the pushing portion. The outer diameter of the correcting portion is gradually changed with respect to the axial direction of the outer tube, and the sleeve is sleeved on the pushing portion.

Preferably, there are two fixing members which are disposed at two ends of the pushing portion, and the two fixing members position the kit between the two ends of the pushing portion.

Preferably, the torsion adjusting device comprises an elastic member and a sliding member. The elastic member is elastically disposed between the holding member and the sliding member, and the sliding member is slidably disposed in the receiving space, and one end of the elastic member is connected to the correcting portion.

Preferably, the cut surface of the correction portion has a trapezoidal shape.

Preferably, the cut surface of the correction portion has an arc shape.

By the above, the creation can achieve the effect, and the kit is disposed between the outer tube and the top holding member, and the contact between the holding member and the sleeve is reduced by the discontinuous contact relationship between the contact portion of the kit and the holding member. The area reduces the friction between each other. When the torque wrench is operated, the kit can increase the lubrication effect, make the sliding effect of the top holding member smoother, and increase the torque transmission performance of the torque wrench.

Furthermore, when the lubricating oil is added between the top holding members, the contact portion of the kit has a spiral structure to provide an oil storage space, which reduces the need to add lubricating oil from time to time, and often requires the disassembly of the torque wrench, and can be achieved with a small amount of lubricating oil. Actuation effect.

In addition, in the manufacturing process, the heat treatment step can be omitted, and the hardness and rigidity of the outer tube are replaced by the kit which has been heat treated, thereby improving the shortcomings of the conventional outer tube to be thermally deformed during the manufacturing process.

In addition, the outer diameter of the correction portion of the holding member is gradually changed with respect to the axial direction of the outer tube, and the center position of the elastic member can be corrected to avoid the deviation of the elastic member during the operation of the torque wrench, thereby increasing the torque transmission performance of the torque wrench.

For the convenience of the description, the central idea expressed in the column of the above novel content is expressed by a specific embodiment. The various items in the examples are drawn to scale in the description and not to the actual elements, and are described in the foregoing.

Referring to Figures 1 to 6, the present invention provides a torque wrench structure comprising:

An outer tube 10 has a front end 11 and a tail end 12 disposed oppositely, and an accommodating space 13 is axially disposed in the outer tube 10.

A driving member 20 has a driving head 21 at one end and a connecting end 22 at the other end. The driving member 20 is pivotally disposed at the front end 11 of the outer tube 10. The connecting end 22 extends into the accommodating space 13, and the driving head 21 can be an opening. In the structural form of a wrench or a ratchet wrench, the driving head 21 is used to rotate a screwing member (bolt or nut) or a sleeve. In the present embodiment, the driving head 21 is a ratchet wrench.

A holding member 30 is slidably disposed in the accommodating space 13 with respect to the axial direction of the outer tube 10 and is connected to the connecting end 22 . The holding member 30 has a pushing portion 31 and a correcting portion 32 protruding from one end of the pushing portion 31. The other end of the pushing portion 31 is axially coupled to the connecting end 22, and the correcting portion 32 is protruded with respect to the axial direction of the outer tube 10. In the urging portion 31, the outer diameter of the correcting portion 32 is gradually tapered with respect to the front end 11 of the outer tube 10 toward the trailing end 12, and the cut surface of the correcting portion 32 is one of a trapezoidal shape or an arc shape, as shown in FIG. As shown in FIG. 5, the cut surface of the correction portion 32 has a trapezoidal shape; as shown in FIG. 6, the cut surface of the correction portion 32 has an arc shape.

In addition, two fixing members 33 are disposed at two ends of the pushing portion 31, and the two fixing members 33 are integrally formed with the pushing portion 31, and the two fixing members 33 are protruded from the two ends of the pushing portion 31, or are fixed by two. The members 33 are disposed at the two ends of the pushing portion 31. In the present embodiment, the two fixing members 33 are respectively assembled and fixed at the two ends of the pushing portion 31, wherein, as shown in FIG. 2, FIG. 3 and FIG. The two fixing members 33 are C-shaped buckles; as shown in FIG. 4 and FIG. 5, the two fixing members 33 are limiting covers.

A kit 40 is disposed between the outer tube 10 and the top member 30, and the sleeve 40 is positioned between the two ends of the pusher portion 31 by the two fixing members 33. Furthermore, the inner edge of the sleeve 40 has a contact portion 41, and the contact portion 41 is in a discontinuous contact relationship with the outer edge of the holding member 30. The sleeve 40 is sleeved on the pushing portion 31, and the contact portion 41 and the pushing portion 31 are The outer edge is in point contact. In the present embodiment, the sleeve 40 is a spring, and the contact portion 41 has a spiral structure. When a lubricating oil 1 is added to the kit 40, the lubricating oil 1 can be covered on the spiral structure of the contact portion 41 by the spiral structure of the contact portion 41 to increase the oil storage space, thereby reducing the addition of lubricating oil. In addition, when the holding member 30 slides relative to the sleeve 40, the sleeve 40 is positioned between the two ends of the pushing portion 31 by the two fixing members 33, preventing the sleeve 40 from coming off the pushing portion 31, and the contact portion 41 and the pushing portion 31 is in point contact, which can reduce the contact area between the sleeve 40 and the top holding member 30 to increase the sliding effect of the holding member 30 in the accommodating space 13.

A torque adjusting device 50 is disposed on the outer tube 10 and different from one end of the driving member 20. In the present embodiment, the torque adjusting device 50 is disposed at the trailing end 12 of the outer tube 10. The torsion adjusting device 50 includes a handle sleeve 51, an elastic member 52 and a sliding member 53. The handle sleeve 51 is coupled to the tail end 12 of the outer tube 10. The handle sleeve 51 is used for the user to hold or rotate. Adjust the torque value. The elastic member 52 and the sliding member 53 are disposed in the handle sleeve 51 and the accommodating space 13. The two ends of the elastic member 52 are elastically disposed between the holding member 30 and the sliding member 53, and one end of the elastic member 52 and the correcting portion 32, the sliding member 53 is slidably disposed in the accommodating space 13. In the present embodiment, the elastic member 52 is a compression spring. When the user rotates the bolt provided by the grip sleeve 51, the sliding member 53 is biased toward the elastic member 52 by the bolt, and the degree of compression of the compression elastic member 52 is adjusted to adjust the torque value.

Further, as shown in FIGS. 1 to 3, one end of the elastic member 52 is in contact with a portion of the correcting portion 32. When the user rotates the grip sleeve 51 and adjusts the required torque value, the bolt passing through the grip sleeve 51 causes the slide member 53 to move relative to the front end 11 of the outer tube 10 toward the front end 11 to move on the slide member 53. At the same time, a pre-force is applied to compress the elastic member 52, wherein the correcting portion 32 is incompletely contacted with the elastic member 52 by the outer diameter of the correcting portion 32 with respect to the axial direction of the outer tube 10, so that the elastic member 52 is compressed. When the correcting portion 32 can position the center of the elastic member 52 on the axial center of the outer tube 10, the center of the elastic member 52 does not cause eccentricity. Therefore, the correcting portion 32 provides the effect of automatically correcting the center of the elastic member 52. .

Thereby, the sleeve 40 is disposed between the outer tube 10 and the holding member 30, so that the sleeve 40 is in point contact with the holding member 30, the contact area between the sleeve 40 and the holding member 30 is reduced, and the sleeve 40 and the top are lowered. When the torque of the holding member 30 is actuated, the kit 40 can increase the lubricating effect, so that the sliding effect of the holding member 30 is smoother, and the torque transmission performance of the torque wrench structure of the present invention is increased.

Further, when the lubricating oil 1 is added between the kits 40, the spiral structure of the contact portion 41 can provide an oil storage space, reduce the number of times the lubricating oil 1 is added, and can achieve a smooth running effect with a small amount of the lubricating oil 1.

In addition, in the present embodiment, the kit 40 has been subjected to heat treatment. Therefore, in the process of manufacturing the tube 10, the heat treatment step may be omitted, and the hardness of the outer tube 10 is replaced by the kit 40 which has been heat treated. Rigidity avoids the problem of thermal deformation of the outer tube 10 during the manufacturing process.

In addition, the outer diameter of the correcting portion 32 is gradually changed with respect to the axial direction of the outer tube 10, so that the correcting portion 32 is not completely in contact with the elastic member 52, and when the elastic member 52 is compressed, the correcting portion 32 can center the elastic member 52. Positioned on the axis of the outer tube 10, the effect of the automatic correction center is generated, thereby increasing the torque transmission performance of the torque wrench structure of the present invention.

The above embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. All kinds of modifications or changes that are not in violation of the spirit of this creation are all in the scope of this creative intention.

1‧‧‧Lubricating oil
31‧‧‧Move
10‧‧‧External management
32‧‧‧Correction Department
11‧‧‧ front end
33‧‧‧Fixed parts
12‧‧‧End
40‧‧‧ kit
13‧‧‧ accommodating space
41‧‧‧Contacts
20‧‧‧ Drives
50‧‧‧Torque adjusting device
21‧‧‧Drive head
51‧‧‧Handle cover
22‧‧‧Connecting end
52‧‧‧Flexible parts
30‧‧‧Top holding parts
53‧‧‧Slipper

Figure 1 is a perspective view of the creation. 2 is a cross-sectional view (1) taken along line 2-2 of FIG. 1, showing that the cut surface of the correction portion has a trapezoidal shape, and the fixing member is a C-shaped buckle. Figure 3 is a partial enlarged view of Figure 2. Fig. 4 is a cross-sectional view (2) taken along the line 2-2 of Fig. 1 of the present invention, showing that the cut surface of the correction portion has a trapezoidal shape, and the fixing member is a limit cover. Figure 5 is a partial enlarged view of Figure 4. Fig. 6 is a cross-sectional view (3) taken along the line 2-2 of Fig. 1 of the present invention, showing that the cut surface of the correction portion has an arc shape.

10‧‧‧External management

11‧‧‧ front end

13‧‧‧ accommodating space

20‧‧‧ Drives

21‧‧‧Drive head

22‧‧‧Connecting end

30‧‧‧Top holding parts

31‧‧‧Move

32‧‧‧Correction Department

33‧‧‧Fixed parts

40‧‧‧ kit

52‧‧‧Flexible parts

53‧‧‧Slipper

Claims (9)

A torque wrench structure comprising: an outer tube having an accommodating space in the axial direction; a driving member having a driving head at one end and a connecting end at the other end, the driving member being pivoted at one end of the outer tube The connecting end extends into the accommodating space; a receiving member is slidably disposed in the accommodating space and connected to the connecting end; a kit disposed between the outer tube and the top member; A torque adjusting device is disposed on the outer tube and different from one end of the driving member, and the torque adjusting device is operated to adjust the torque value. The torque wrench structure of claim 1, wherein the inner edge of the sleeve has a contact portion, and the contact portion has a discontinuous contact relationship with the top member. The torque wrench structure of claim 2, wherein the contact portion is in point contact with the top member. The torque wrench structure of any one of claims 1 to 3, wherein the kit is a spring. The torque wrench structure of claim 4, wherein the holding member has a pushing portion and a correcting portion protruding from the pushing portion, and an outer diameter of the correcting portion is gradually tapered with respect to the outer tube. The kit is sleeved on the pusher. The torque wrench structure of claim 5 further includes two fixing members disposed at two ends of the pushing portion, the two fixing members positioning the sleeve between the two ends of the pushing portion. The torque wrench structure of claim 5, wherein the torsion adjusting device comprises an elastic member and a sliding member, the elastic member is elastically disposed between the holding member and the sliding member, and the sliding member is slidably disposed. One end of the elastic member is connected to the correction portion in the accommodating space. The torque wrench structure of claim 7, wherein the cut surface of the correction portion has a trapezoidal shape. The torque wrench structure of claim 7, wherein the cut surface of the correction portion has an arc shape.