TWM556638U - Bushing structure of torque wrench - Google Patents

Abstract

The present invention provides a bushing structure of a torque wrench. The torque wrench has an outer tube, a driving member and a supporting member. The outer tube is axially provided with an accommodating space; one end of the driving member has a connecting end, and the driving member is pivoted. At one end of the outer tube, the connecting end extends into the accommodating space; the holding member is slidably disposed in the accommodating space and is connected to the connecting end; the bushing structure of the torque wrench comprises: a substantially cylindrical body, which is disposed in the accommodating The space is sleeved on the top member along the axial direction of the outer tube, the body has an outer edge and an inner edge, the outer edge and the inner wall surface of the outer tube are in a non-continuous contact relationship, and the inner edge and the top member are discontinuous Contact relationship. Thereby, the oil storage space can be effectively increased, and the friction between the outer tube and the top member can be reduced.

Description

Bushing structure of torque wrench

The present invention relates to a field of torque wrenches, and more particularly to a bushing structure of a torque wrench.

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 to reduce the friction between the stud and the hollow tube and increase the lubrication effect.

However, as the use time of the torque wrench and the number of operations increase, the lubricating oil will gradually decrease, resulting in a gradual decrease in the lubrication effect between the stud and the hollow tube; when the torque wrench is operated, the torque transmission performance of the torque wrench will also be affected. .

In order to solve the above problems, the present invention provides a bushing structure of a torque wrench, which is disposed between the outer tube and the top holding member by the body. When the lubricating oil is added to the inner edge of the body, the inner edge of the body provides an oil storage space. When the torque wrench is operated, the loss of the lubricating oil can be reduced, the sliding effect of the top holding member can be made smoother, and the torque transmission performance of the torque wrench structure of the present invention is increased.

An embodiment of the present invention provides a bushing structure of a torque wrench, the torque wrench has an outer tube, a driving member and a receiving member, wherein the outer tube is axially provided with an accommodating space; one end of the driving member has a The driving head has a connecting end, the driving member is pivotally disposed at one end of the outer tube, and the connecting end extends into the receiving space; the holding member is slidably disposed in the receiving space and is connected to the connecting end; the bushing structure of the torque wrench The utility model comprises: a body, which is substantially cylindrical, and the body is arranged in the accommodating space and is sleeved on the top holding member along the axial direction of the outer tube, the body has an outer edge and an inner edge, and the outer edge and the inner wall surface of the outer tube In a non-continuous contact relationship, the inner edge and the top member are in a discontinuous contact relationship.

By the above, the present invention is disposed between the outer tube and the holding member by the main body, and through the discontinuous contact between the main body and the outer tube and the holding member, the contact area between the holding member and the sleeve is reduced, and the torque wrench is operated. It is smoother.

Furthermore, when the lubricating oil is added to the inner edge of the body, the inner edge of the body can provide an oil storage space, which reduces the need to frequently add lubricating oil, and often needs to disassemble the torque wrench; when the torque wrench is operated, a small amount of lubricating oil can be used. 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.

In an embodiment of the present invention, the outer edge ring is provided with a plurality of first peaks and a plurality of first troughs, each first peak is connected to each first trough, and the inner edge has a plurality of second peaks and a plurality of second troughs, each The second peak is coupled to each of the second troughs, each first peak has a first distance from each of the first troughs, and each second peak has a second distance from each second trough, the first distance is not Equal to the second distance, wherein the first distance is less than the second distance. Thereby, the clamping force between the outer edge and the outer tube is effectively increased, and the body is arbitrarily slid when the holding member is actuated, thereby improving the positioning effect of the body.

In an embodiment of the present invention, an opening is formed in the axial direction of the body, so that the body has the elasticity of being stretched, so that the body can be quickly set on the top holding member, thereby achieving the effect of simple and quick assembly.

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 FIG. 1 to FIG. 5 , the present invention provides a bushing structure of a torque wrench. The torque wrench 1 has an outer tube 2 , a driving member 3 , a receiving member 4 and a torque adjusting device 5 .

The outer tube 2 has a front end 2a and an opposite end end 2b, and the inner portion of the outer tube 2 is axially disposed with an accommodating space 2c; the two ends of the driving member 3 respectively have a driving head 3a and a connecting end 3b for driving The driving member 3 is pivotally connected to the accommodating space 2c, and the driving head 3a can be an open-ended wrench or a ratchet wrench. The driving head 3a is used for rotating the screwing member (bolt or nut). Or the sleeve, in the present embodiment, the driving head 3a is a ratchet wrench; the holding member 4 is slidably disposed along the axial direction of the outer tube 2 in the accommodating space 2c, and is connected to the connecting end 3b; the torque adjusting device 5 is provided At the end 2b of the outer tube 2, the torque value of the torque wrench 1 is adjusted by operating the torque adjustment device 5.

The bushing structure of the torque wrench of the present invention comprises:

a body 10 having a cylindrical shape, the body 10 is disposed in the accommodating space 2c, and is sleeved on the ejector member 4 along the axial direction of the outer tube 2, wherein the body 10 has an outer edge 11 and an inner edge 12, the outer edge 11 and the inner wall surface of the outer tube 2 are in a non-continuous contact relationship, the inner edge 12 and the top member 4 are in a non-continuous contact relationship, in the present embodiment, the outer edge 11 and the outer tube 2 The walls are in point contact, and the inner edge 12 is in point contact with the top member 4.

Furthermore, the outer edge 11 continuously circulates a plurality of first peaks 111 and a plurality of first troughs 112 along the axial direction of the body 10, each first peak 111 is coupled to each of the first troughs 112; and the inner edge 12 is along the axial direction of the body 10. Continuously having a plurality of second peaks 121 and a plurality of second valleys 122, each second peak 121 is coupled to each of the second valleys 122, wherein the first peak 111 is originated from one end of the body 10, and the second peak 121 is composed of the body In the present embodiment, each of the first peaks 111 and each of the first troughs 112 has an arc shape, so that the outer edge 11 is wavy; each second peak 121 and each The second trough 122 has an arc shape and the inner edge 12 is wavy.

In addition, each of the first peaks 111 and each of the first troughs 112 has a first distance L1, and the first distance L1 is an axial distance corresponding to the body 10, and each of the second peaks 121 and each of the second troughs 122 There is a second distance L2, which is an axial distance corresponding to the body 10, wherein the first distance L1 is not equal to the second distance L2. In the present embodiment, the first distance L1 is smaller than the second distance. One-half of L2, as shown in FIG. 3, whereby the number of the first peak 111 and the first trough 112 of the outer edge 11 is compared with the second peak 121 of the inner edge 12 and the first The number of the two troughs 122 is large, so that the outer edge 11 is connected to a high degree, and the clamping force between the outer edge 11 and the outer tube 2 can be effectively increased, and the body 10 is slid with the holding member 4 when the holding member 4 is actuated. In turn, the positioning effect of the body 10 is achieved.

In addition, an opening 13 is defined in the axial direction of the body 10, and the width of the opening 13 is one-twentieth of the circumference of the body 10. Thereby, when the body 10 provides a supporting elastic force through the opening 13, the sleeve 10 is quickly sleeved. And by the clamping force of the outer edge 11, the effect of rapid positioning and assembly is achieved.

Referring to FIG. 2, FIG. 4 and FIG. 5, the present invention can effectively reduce the contact area between the holding member 4 and the body 10 by the discontinuous contact relationship between the body 10 and the outer tube 2 and the holding member 4. When the torque wrench 1 is operated, the body 10 provides a lubricating effect, so that the sliding effect of the top holding member 4 is smoother, and the torque transmission performance of the torque wrench 1 is increased.

Furthermore, referring to FIG. 3 and FIG. 5, when the lubricating oil 6 is added between the inner edges 12 of the body 10, the second troughs 122 of the inner edge 12 can provide an oil storage space, thereby reducing the addition of lubricating oil 6. frequency.

Moreover, when the torque wrench 1 is operated, a small amount of the lubricating oil 6 can be used, so that the sliding effect of the holding member 4 is smoother, and the torque transmitting performance of the torque wrench 1 is increased.

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‧‧‧torque wrench
2‧‧‧External management
2a‧‧‧ front end
2b‧‧‧End
2c‧‧‧ accommodating space
3‧‧‧ Drives
3a‧‧‧Drive head
3b‧‧‧link
4‧‧‧Top holding parts
5‧‧‧Torque adjustment device
6‧‧‧Lubricating oil
10‧‧‧ Ontology
11‧‧‧ outer edge
111‧‧‧The first peak
112‧‧‧First trough
12‧‧‧ inner edge
121‧‧‧second peak
122‧‧‧Second trough
13‧‧‧ openings
L1‧‧‧ first distance
L2‧‧‧Second distance

Figure 1 is a perspective view of the inventive body. Figure 2 is a schematic cross-sectional view of the inventive body. Figure 3 is a partially enlarged schematic view of Figure 2. Figure 4 is a schematic view of the body of the present invention provided on a torque wrench. Figure 5 is a partially enlarged schematic view of Figure 4.

Claims (9)

A bushing structure of a torque wrench, the torque wrench has an outer tube, a driving member and a receiving member, wherein the outer tube is axially provided with an accommodating space; the driving member has a driving head at one end and the other end a connecting end, the driving member is pivotally disposed at one end of the outer tube, the connecting end extends into the receiving space; the holding member is slidably disposed in the receiving space, and is connected to the connecting end; the lining of the torque wrench The sleeve structure comprises: a body having a cylindrical shape, the body is disposed in the accommodating space and is sleeved on the urging member along an axial direction of the outer tube, the body having an outer edge and an inner edge, the outer body The edge has a discontinuous contact relationship with the inner wall surface of the outer tube, and the inner edge has a discontinuous contact relationship with the top member. The bushing structure of the torque wrench of claim 1, wherein the outer edge is in point contact with the inner wall of the outer tube, and the inner edge is in point contact with the top member. The bushing structure of the torque wrench of claim 1 or 2, wherein the outer edge ring is provided with a plurality of first peaks and a plurality of first troughs, each first peak connecting each first trough, the inner edge having a plurality of The second peak and the second second trough, each second peak is connected to each second trough. The bushing structure of the torque wrench of claim 3, wherein each first peak has a first distance from each first trough, and each second peak has a second between each second trough and each second trough The distance is not equal to the second distance. The bushing structure of the torque wrench of claim 4, wherein the first distance is less than the second distance. The bushing structure of the torque wrench of claim 5, wherein the first distance is less than one-half of the second distance. The bushing structure of the torque wrench of claim 3, wherein each of the first peaks and each of the first troughs has an arc shape, and the outer edge is wavy. The bushing structure of the torque wrench of claim 3, wherein each of the second peaks and each of the second troughs has an arc shape, and the inner edge is wavy. The bushing structure of the torque wrench of claim 1, wherein an opening is formed in the axial direction of the body.