TWM556653U - Oil seal structure of torque wrench - Google Patents

Abstract

The present invention provides an oil seal structure of a torque wrench. The torque wrench has an outer tube and a driving member. The outer tube has an accommodating space in the axial direction. One end of the driving member has a connecting end, and the driving member is pivotally disposed at one end of the outer tube. The connecting end extends into the accommodating space; the oil seal structure of the torque wrench comprises: a top holding member, a sleeve and a closing member, the top holding member is slidably disposed in the accommodating space and connected to the connecting end; the kit is disposed on the outer tube and Between the top holding members, the kit has an oil storage space, and the closing member closes the oil storage space for accommodating the lubricating oil. Thereby, the loss of lubricating oil is reduced, and a smooth operation can be achieved with a small amount of lubricating oil.

Description

Oil seal structure of torque wrench

The present invention relates to a field of torque wrenches, and more particularly to an oil seal structure of a torque wrench capable of increasing the storage amount of lubricating oil.

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.

During the operation of the torque wrench, the stud will be slipped in the hollow tube due to the reaction force of the screw member being fed back to the torque wrench. During the slipping process, the stud and the hollow tube will generate friction; therefore, Avoid excessive friction between the stud and the inner wall of the hollow tube, and add lubricating oil between the stud and the hollow tube to increase the lubrication between the two.

However, with the use time of the torque wrench, or the number of operations increases, the amount of oil of the lubricating oil will gradually decrease, resulting in a gradual decrease in the lubricating effect, which affects the torque transmission effect of the torque wrench. Therefore, in order to maintain the lubricating effect, the torque must be disassembled from time to time. Adding lubricant to the wrench causes troubles in use.

In order to solve the above problems, the present invention provides an oil seal structure of a torque wrench for storing lubricating oil in an oil storage space, which can effectively reduce the loss of lubricating oil, reduce the number of times of adding lubricating oil, and improve the convenience in use.

An embodiment of the present invention provides an oil seal structure of a torque wrench. The torque wrench has an outer tube and a driving member. The outer tube has an accommodating space in the axial direction. One end of the driving member has a connecting end, and the driving member is pivoted on the driving member. One end of the outer tube, the connecting end extends into the accommodating space; the oil seal structure of the torque wrench comprises: a top holding member slidably disposed in the accommodating space and connected to the connecting end; and a top holding member slidably disposed in the accommodating portion a space, and connected to the connection end; a kit disposed between the outer tube and the top member, the kit has an oil storage space, the top member is disposed in the oil storage space; and a closure member is disposed on the top Between the piece and the kit, the closure closes the oil storage space for receiving the lubricating oil.

By the above, the creation can store the lubricating oil in the oil storage space, so that the top holding member can be effectively lubricated, the sliding effect is smoother, and the torque transmission performance of the torque wrench is increased.

In addition, the lubricating oil is enclosed in the oil storage space, which can effectively reduce the loss of the lubricating oil, reduce the number of times of adding the lubricating oil, improve the trouble of adding the lubricating oil to the torque wrench, and improve the convenience in use.

In an embodiment of the present invention, the inner circumference of the kit is a non-continuous plane, thereby further increasing the volume of the oil storage space; and reducing the contact area between the top holding member and the kit, reducing the friction between each other, in the torque wrench During operation, 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.

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 an oil seal structure of a torque wrench. The torque wrench 1 has an outer tube 2 , a driving member 3 and a torque adjusting device 4 .

The outer tube 2 has a front end 2a and an opposite end end 2b. The inner portion of the outer tube 2 is provided with an accommodating space 2c along the axial direction thereof. The two ends of the driving member 3 respectively have a driving head 3a and a connecting end 3b. The driving member 3 is pivotally disposed on the front end 2a of the outer tube 2, and the connecting end 3b extends into the accommodating space 2c. The driving head 3a is disposed outside the outer tube 2, and may be in the form of an open-end wrench or a ratchet wrench, and the driving head 3a For the purpose of rotating the bolt, the nut or the sleeve, in the present embodiment, the driving head 3a is a ratchet wrench; the torque adjusting device 4 is disposed at the tail end 2b of the outer tube 2, and the torque wrench 1 is adjusted by operating the torque adjusting device 4 Torque value.

The oil seal structure contains:

a receiving member 10 is slidably disposed in the accommodating space 2c along the axial direction of the outer tube 2, and an engaging groove 11 is recessed at one end of the holding member 10. The other end of the holding member 10 is provided with a positioning portion 12, the engaging groove The connecting portion 3 is connected to the connecting end 3b. The receiving member 10 has a body portion 13 between the engaging groove 11 and the positioning portion 12, and the outer diameter of the positioning portion 12 is larger than the outer diameter of the body portion 13.

A kit 20 is formed in a cylindrical shape, and the kit 20 is disposed between the outer tube 2 and the top member 10. The kit 20 has an oil storage space 21, wherein the top member 10 is disposed in the oil storage space 21 and is held by the top. The body portion 13 of the member 10 is housed in the oil storage space 21.

Furthermore, the inner circumference of the sleeve 20 is a non-continuous plane, and a groove 22 is recessed around the inner circumference of the sleeve 20, wherein the inner circumference of the sleeve 20 has a plurality of recesses 23 and a plurality of flat portions 24, each of which has a plurality of recesses 23 and a plurality of flat portions 24, respectively. The recessed portion 23 and each flat portion 24 are coupled to each other along the axial direction of the sleeve 20 such that the inner circumference of the sleeve 20 is substantially undulated between the two recesses 22, thereby causing a discontinuous contact relationship between the sleeve 20 and the top holding member 10. The contact area between the top holding member 10 and the sleeve 20 is reduced to reduce the friction between each other, and the kit 20 can increase the lubricating effect and make the sliding effect of the top holding member 10 smoother.

A closure member 30 is disposed between the top member 10 and the sleeve 20, and the closure member 30 is sleeved on the top member 10. In the present embodiment, the closure member 30 is annular and the number of the closure member 30 is Two sealing members 30 are respectively sleeved on both ends of the top holding member 10, and each sealing member 30 is correspondingly disposed in each of the grooves 22, thereby causing the sealing member 30 to store the oil storage space 21 of the kit 20. It is completely closed, and the lubricating oil 5 is accommodated in the closed oil storage space 21.

Therefore, the lubricating oil 5 is enclosed in the oil storage space 21. When the torque wrench 1 is operated, the lubricating oil 5 is not easily worn by the outer tube 2, the kit 20 or the holding member 10, so as to reduce the number of times the lubricating oil 5 is added, so there is no need to Always remove the torque wrench 1 and add the lubricant 5 to improve the convenience of using the torque wrench 1.

Furthermore, the oil storage space 21 is formed between the top holding member 10 and the sleeve 20 through the sealing member 30, and the lubricating oil 5 is stored in the oil storage space 21, so that the holding member 10 can be effectively lubricated, and the sliding effect is smoother. Increase the torque transmission performance of the torque wrench 1.

In addition, the inner circumference of the sleeve 20 is wavy, which can further increase the volume of the oil storage space 21, and the discontinuous contact relationship between the top holding member 10 and the sleeve 20 is reduced, thereby reducing the contact area between the two to reduce each other. Friction, when the torque wrench 1 is operated, the kit 20 provides a lubricating effect, and with a small amount of lubricating oil 5, the sliding effect of the holding member 10 can be made 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
10‧‧‧Top holding parts
2‧‧‧External management
11‧‧‧Connecting slot
2a‧‧‧ front end
12‧‧‧ Positioning Department
2c‧‧‧ accommodating space
13‧‧‧ Body
2b‧‧‧End
20‧‧‧ kit
3‧‧‧ Drives
21‧‧‧ oil storage space
3a‧‧‧Drive head
22‧‧‧ Groove
3b‧‧‧Connector
23‧‧‧ recess
4‧‧‧Torque adjusting device
24‧‧ ‧ flat
5‧‧‧Lubricating oil
30‧‧‧Closed

Figure 1 is a perspective view of the creation. Figure 2 is a schematic diagram of the decomposition of the creation. Figure 3 is a schematic cross-sectional view of the kit. Figure 4 is a schematic diagram of the creation set of the torque wrench. Figure 5 is a partially enlarged schematic view of Figure 4.

Claims (10)

The oil seal structure of the torque wrench, the torque wrench has an outer tube and a driving member, the outer tube is axially provided with an accommodating space, and one end of the driving member has a connecting end, and the driving member is pivotally disposed at one end of the outer tube The oil seal structure of the torque wrench includes: a top member that is slidably disposed in the accommodating space and connected to the connection end; a kit disposed on the outer tube Between the holding members, the kit has an oil storage space, the top member is disposed in the oil storage space, and a closing member is disposed between the top member and the sleeve, the sealing member is to be stored The oil space is closed to accommodate the lubricating oil. The oil seal structure of the torque wrench of claim 1, wherein the closure member is sleeved on the top member. The oil seal structure of the torque wrench of claim 2, wherein the inner circumference of the sleeve has a groove, and the closure member is correspondingly disposed in the groove. The oil seal structure of the torque wrench of claim 1, wherein the inner circumference of the sleeve has two grooves, and the two grooves are respectively recessed at two ends of the inner circumference of the sleeve, and the number of the closure members is two. Each closure member is correspondingly disposed in each groove. The oil seal structure of the torque wrench of claim 4, wherein the two closure members are respectively sleeved at two ends of the top bearing member. The oil seal structure of the torque wrench of claim 1, 2 or 4, wherein the closure member is annular. The oil seal structure of the torque wrench of claim 1, 3 or 4, wherein the inner circumference of the kit is a discontinuous plane. The oil seal structure of the torque wrench of claim 7, wherein the inner circumference of the sleeve has a plurality of concave portions and a plurality of flat portions, and each of the concave portions and each flat portion are coupled to each other along the axial direction of the sleeve to make the inner circumference of the sleeve It is wavy. The oil seal structure of the torque wrench of claim 1, wherein one end of the top member is recessed with an engaging groove, and the engaging groove is coupled to the connecting end. The oil seal structure of the torque wrench of claim 9, wherein the holding member has a positioning portion different from one end of the engaging groove, and one end of the sleeve abuts the positioning portion.