TWM614243U - Adjustable torque wrench - Google Patents

Abstract

The invention relates to an adjustable torque wrench, which comprises a sleeve part and a grip part. The sleeve part can be replaced as required. Wherein, the holding part includes a torsion transmission element and a spring adjustment element. The torque transmission element is used to transmit torque to the sleeve portion and has a member for stable torque transmission, including a rotating seat, a plurality of steel balls, a plurality of steel ball seats, a plurality of shaft centers, and a fixed seat. The above-mentioned spring adjusting element is used to provide torsion, including a compression spring and a small rotating cover, and has the function of adjusting the output of torsion.

Description

Adjustable torque wrench

An adjustable torque wrench applied to various connectors, in particular a torque wrench designed for locking coaxial connectors.

In the past, torque wrenches can adjust the torque depending on the type of connector to prevent the connector from being damaged due to excessive torque of the torque wrench or loosening of the connector due to the excessive torque of the torque wrench during the process of fixing the connector. However, in the current situation where the precision of electronic products continues to increase, the volume of electronic components is also constantly shrinking, resulting in more and more precise operations on the connector. In particular, communication electronic products suitable for coaxial connectors need to lock the coaxial connector many times to test its communication quality. In the process of fixing the connector with a torque wrench, it often needs to be fixed repeatedly to ensure that the connector is properly secured. Fixed. If the torque wrench is fixed each time, the torque output each time is not accurate enough, it is easy to cause the operator to be unable to judge whether the connector has been properly fixed, and it is easy to cause trouble in the operation.

Furthermore, after long-term use of the torque wrench in the past, the accuracy of the torque output will also decrease, which is caused by the mutual wear of the internal parts of the torque wrench. Therefore, how to develop a torque wrench with stable output torque and durability has become a problem to be solved in the technical field.

In order to solve the above problems, an embodiment of the present invention provides an adjustable torque wrench, which includes a sleeve portion and a grip portion. The above-mentioned sleeve part is used to lock the connector, and the types of connectors that can be combined include coaxial connectors such as SMA/1.85mm/2.4mm/2.92mm/3.5mm. The above-mentioned holding part includes a torsion transmission element and a spring adjustment element. The torque transmission element is connected with the sleeve portion and transmits torsion to the sleeve portion, and includes a rotating seat, a plurality of steel balls, a plurality of steel ball seats, a plurality of shaft centers, and a fixing seat. The rotating seat is connected to the sleeve portion and has a plurality of grooves with a specific angle for transmitting torsion force to drive the sleeve portion to move in an axial direction; the plurality of steel balls are arranged horizontally and fixed in the groove, when When the torsion force is received, the rotating seat will be driven to move in the axial direction, and when the torsion force is greater than a set value, the rotating seat will produce a relative movement with the steel ball, and the steel ball will move along the axial direction to the next groove; The plurality of shaft centers are used to support the rotating seat and prevent the rotating seat from tilting when the steel ball and the rotating seat produce the above-mentioned relative movement; the plurality of steel ball seats are used to drive the steel ball to move axially between the grooves The base is used to balance the torsion generated by the rotation of the shaft; one end of the fixed seat is connected with the steel ball seat and the shaft, and the other end is a meshing structure and is meshingly coupled with the meshing structure of the housing of the holding portion, so When the above-mentioned holding part rotates, the fixing seat can be simultaneously driven to move in the axial direction. The spring adjustment element is connected to the torque transmission element and is located at the other end opposite to the sleeve portion for adjusting the torque output and transmitting the torque to the torque transmission element.

Specifically, the embodiment of the present invention provides an adjustable torque wrench. In the design of the torque transmission element, the torque of each fixed connector can be stably output, and the torque value can be adjusted in advance by the user. When the value is exceeded, the steel ball will break away from the original groove, resulting in that the steel ball cannot continue to drive the rotating seat to move in the axial direction, and therefore the rotating seat cannot continue to drive the sleeve portion. After the steel ball leaves the original groove, the steel ball and the rotating seat begin to produce a relative movement. The steel ball moves in the axial direction and falls into the next groove. At this time, the excess torsion (relative movement) will be absorbed by the next groove. Offset, the aforementioned steel ball thus stops the aforementioned axial movement. In view of the fact that when the steel ball and the rotating seat produce a relative movement, the rotating seat may be tilted. Therefore, the torque handle provided by the present invention has the steel ball seat and the shaft support the rotating seat to prevent the rotating seat from tilting. As a result, the relative angle between the steel ball and the rotating seat during a relative movement is less than 90 degrees, which may cause the steel ball to drive the rotating disk and transmit excess torque to the sleeve portion. When the steel ball and the rotating disk produce a relative movement, if the relative angle to each other is less than 90 degrees, the steel ball may not smoothly fall into the next groove, resulting in the torsion handle being unable to continue to be used. Therefore, the above-mentioned steel ball seat and shaft center of the torsion handle provided by the present invention will overcome the above-mentioned problems.

According to an embodiment, the above-mentioned spring adjustment element includes a compression spring and a small rotating cover. One end of the compression spring is connected to the torsion transmission element; the small rotating cover is connected to the other end of the compression spring, which is connected to the other end of the torsion transmission element, by adjusting the relative relationship between the small rotating cover and the fixed seat Distance to change the compression of the compression spring to obtain a relative torsion. The above-mentioned relative torsion force can be compared with the relationship between the compression amount and the quantitative torque value according to the nature of the above-mentioned compression spring to obtain the quantitative torque force.

According to an embodiment, changing the compression amount of the compression spring includes linking the small rotating cover through the holding portion to change the relative distance between the small rotating cover and the fixing seat. It can also set the adjustment scale of the quantitative torque value by comparing the relationship between the compression amount and the quantitative torque value mentioned above to provide the corresponding torque of different types of coaxial connectors.

According to an embodiment, one side of the groove of the rotating seat is a surface with a larger slope, and the other side is a surface with a smaller slope, so as to provide the steel ball to move to the next groove along the surface with a smaller slope.

According to an embodiment, where the above-mentioned groove with a specific angle, the specific angle includes 45 degrees, 60 degrees, or 90 degrees. If it is 45 degrees, there will be 8 grooves; if it is 60 degrees, there will be 6 grooves; if it is 90 degrees, there will be 4 grooves; the other angles are similar, so I won’t repeat them.

According to an embodiment, when the steel ball seat drives the base on which the steel ball moves axially between the grooves, the angle between the steel ball seat and the rotating seat is a vertical angle or an oblique angle.

Those skilled in the art can understand the present invention by referring to the following detailed description in conjunction with the accompanying drawings. It should be noted that, in order to make the drawings easy to understand and concise, the specific elements in the accompanying drawings of the present invention are not Drawing according to actual scale. In addition, the number and size of each element in the figure are only for illustration, and not intended to limit the scope of the present invention.

According to the deficiencies of the prior art, please refer to Figure 1 and Figure 2 together. Fig. 1 is a perspective view of an adjustable torque wrench according to an embodiment of the present invention. Fig. 2 is an exploded view of an adjustable torque wrench according to an embodiment of the present invention. In FIG. 1, an adjustable torque wrench 100 includes a sleeve portion 120 and a grip portion 140. One end of the sleeve portion 120 is a structure for combining a coaxial connector, and the types of connectors that can be combined include coaxial connectors such as SMA/1.85mm/2.4mm/2.92mm/3.5mm. The sleeve portion 120 is a replaceable sleeve. For example, the screwdriver portion 120 with a male or female structure can be replaced, and it is not limited to a coaxial connector.

In FIG. 2, the torque transmission element 220 includes a large rotating cover 221, a thrust bearing 222, a spring pin 223, a rotating seat 224, a steel ball 225, a steel ball seat 226, a shaft 227 and a fixed seat 228. Among them, the other end of the sleeve portion 120 is submerged in the large rotating cover 221 of the holding portion 140. In the large rotating cover 221, the sleeve portion 120 is connected to the thrust bearing 222, the spring pin 223 and the rotating disk 224, which The thrust bearing 222 and the spring pin 223 are the structure of the prior art, and will not be repeated here.

In FIG. 2, the sleeve portion 120 and the rotating disk 224 are connected to each other through the spring pin 223. When the rotating disk 224 receives the torque transmission and moves in the axial direction, the sleeve portion 120 will be driven to move in the axial direction.

The other side of the rotating disk 224 connected to the sleeve portion 120 has a structure with a plurality of grooves, and a plurality of steel balls 225 are temporarily fixed in the grooves. When the steel ball seat 226 receives the torque transmission, it will drive the plurality of steel balls 225 along Axial movement. And within a set value, the plurality of steel balls 225 will further drive the rotating disk 224 to move in the axial direction; when the torque exceeds a set value, the plurality of steel balls 225 will break away from the original groove and move to the next groove in the axial direction middle. At this time, the plurality of steel balls 225 and the rotating disk 224 will produce a relative movement until the plurality of steel balls 225 each fall into the next groove, that is, to offset the excess torque. Wherein, the plurality of grooves can be cross grooves, that is, the steel balls 225 can be temporarily fixed in the recesses at the four end points of the cross grooves.

For the plurality of grooves, one side of the groove may be a surface with a relatively large slope, and the other side may be a surface with a relatively small slope, so as to provide the steel balls 225 to move to the next groove along the surface with a relatively small slope. In this way, the steel ball 225 can be more easily detached from the groove and generate a relative movement with the rotating disk 224, so as to avoid excessive torque damaging the connector.

When the plurality of steel balls 225 and the rotating disk 224 generate a relative movement, they have a plurality of shaft centers 227 to prevent the rotating disk 224 from tilting during the above-mentioned relative movement. As mentioned above, the tilt of the rotating disk 224 may result in the transmission of excess torque or damage to the torque wrench.

The steel ball seat 226 and the shaft core 227 are connected to one end of the fixed seat 228, and the other end of the fixed seat 228 has an engaging structure that engages and connects with the inner wall of the housing of the holding portion 140 with a corresponding engaging structure. Therefore, when the user operates, rotating the holding portion 140 will simultaneously drive the fixed seat 228 to move in the axial direction, and then drive the aforementioned steel ball seat 226, steel ball 225, rotating seat 224, and sleeve portion 120 in sequence.

According to another embodiment of the present invention, the holding portion 140 also includes a spring adjustment element 240, which is connected to the torque transmission element 220 and is located at the other end of the sleeve portion 120 to adjust the torque output and transmit the torque. To the aforementioned torque transmission element 220.

According to another embodiment of the present invention, the above-mentioned spring adjusting element 240 includes a large top seat 241, a compression spring 242, a small top seat 243, a stop screw 244, and a small rotating cover 245. Among them, one end of the large top base 241 is connected to the fixed base 228, and the other end is connected to the compression spring 242. One end of the compression spring 242 is connected to the large top seat 241, and the other end is connected to the small top seat 243 and the stop screw 244. The small top seat 243 and the stop screw 244 are used to maintain the position of the compression spring 242.

Compared with the sleeve portion 120, which is a front end point of the new adjustable torque wrench 100, the small rotating cover 245 is the rear end point of the adjustable torque wrench 100. The small rotating cover 245 can adjust the relative distance from the front end point. (Or the relative distance to the fixed seat 228), so as to change the compression amount of the compression spring 242, that is, to obtain one of the relative torsion forces described above. Therefore, the small rotating cover 245 of the adjustable torque wrench 100 of the present invention has an adjustable structure. The way to change the compression of the compression spring 242 includes adjusting the grip 140 and the small rotating cover through rotation, pressing, or electronic control. The linkage mode of 245 makes the small rotating cover 245 change the amount of compression on the compression spring 242. According to the nature of the compression spring 242, the relationship between the compression amount of the compression spring 242 and the quantitative torque value can be compared to quantitatively output the torque. The quantitative torque can be marked on the grip 140 as a basis for the user to adjust the torque. It can accurately correspond to the required torque for different types of connectors, such as brass or stainless steel coaxial connectors.

According to another embodiment of the present invention, the grooves on the rotating seat 224 have a specific angle to each other and are arranged in a concentric manner, and the specific angle includes 45 degrees, 60 degrees or 90 degrees. If it is 45 degrees, there will be 8 grooves; if it is 60 degrees, there will be 6 grooves; if it is 90 degrees, there will be 4 grooves. Therefore, depending on the specific angle, there is a corresponding number of grooves. In FIG. 2, the angle of the grooves is 90 degrees, so there are 4 grooves, the number of steel balls 225 is 2, and the number of shafts 227 is 2. In the example of this embodiment, when the steel ball 225 moves to the next groove along the axial direction, its displacement angle is 90 degrees.

The adjustable torque wrench provided by the present model achieves the effect of stabilizing the rotating seat 224 through the design of multiple steel ball seats 226 and multiple shafts 227. The steel ball seat 226 and the axis 227 can support the rotating seat 224 evenly. , To prevent the rotation seat 224 from tilting when the steel ball 225 moves in the axial direction. It can be seen that FIG. 3 is a schematic diagram of the steel ball seat 226 and the shaft 227 supporting the rotating seat 224 when the steel ball 225 moves in the axial direction according to an embodiment of the present invention. In Fig. 3, when the steel ball 225 moves in the axial direction, the steel ball seat 226 indirectly supports the support of the rotating seat 224 (there is a steel ball 225 between the rotating seat 224 and the steel ball seat 226) and the axis 227 directly supports It is supported by the rotating seat 224 (shown by the dotted line).

In summary, the present invention provides an adjustable torque wrench. Through the interaction of various components, the present invention has the following functions: (1) Improve the accuracy of torque output; (2) Increase the durability of the torque handle; (3) ) Can correspond to all kinds of connectors; (4) Can quantitatively (quantify) output torque. With regard to the above-mentioned effects, the present invention has overcome the conventional problems of torque handles in the past.

The present invention is disclosed in the preferred embodiments in this text. However, anyone familiar with the technical field should understand that the above-mentioned embodiments are only used to describe the present invention and are not intended to limit the scope of the patent rights claimed by the present invention. Any changes or substitutions that are equal or equivalent to the above-mentioned embodiments should be interpreted as being covered by the spirit or scope of the present invention. Therefore, the scope of protection of this new model shall be subject to the scope of the following patent applications.

100: Adjustable torque wrench 120: Sleeve 140: Grip 220: Torque transmission element 221: large rotating cover 222: Thrust bearing 223: Spring Tip 224: Rotating seat 225: Steel Ball 226: Steel Ball Block 227: Axis 228: fixed seat 240: Spring adjustment element 241: Big Top Block 242: Compression spring 243: small top seat 244: Stop Screw 245: small rotating cover

In order to make the above and other objectives, features, advantages and embodiments of the present invention more comprehensible, the description of the attached drawings is as follows: Fig. 1 is a perspective view of an adjustable torque wrench according to an embodiment of the present invention. Fig. 2 is an exploded view of an adjustable torque wrench according to an embodiment of the present invention. FIG. 3 is a schematic diagram of the steel ball seat and the shaft support rotating seat when the steel ball moves in the axial direction according to an embodiment of the present invention.

100: Adjustable torque wrench

120: Sleeve

220: Torque transmission element

221: large rotating cover

222: Thrust bearing

223: Spring Tip

224: Rotating seat

225: Steel Ball

226: Steel Ball Block

227: Axis

228: fixed seat

240: Spring adjustment element

241: Big Top Block

242: Compression spring

243: small top seat

244: Stop Screw

245: small rotating cover

Claims (8)

An adjustable torque wrench, including: A sleeve part for locking a connector; A holding part is arranged at one end of the sleeve part and includes a torque transmission element and a spring adjustment element, wherein the spring adjustment element is used to adjust the torque output and transmit the torque to the torque transmission element, wherein the torque transmission element ,include: A rotating seat connected to the sleeve portion and having a plurality of grooves with a specific angle for transmitting torsion force to drive the sleeve portion to move in an axial direction; A plurality of steel balls, which are arranged horizontally and fixed in the grooves, will drive the rotating seat to move in the axial direction when receiving torque, and when the torque is greater than a set value, the rotating seat and the The steel balls generate a relative movement, and the steel balls move to the next groove along the axial direction; A plurality of shaft centers are used to support the rotating seat and prevent the rotating seat from tilting when the steel balls and the rotating seat produce the relative movement; A plurality of steel ball seats is a base that drives the steel balls to move axially between the grooves, so as to balance the torsion force generated by the rotation of the shaft; and A fixing seat, one end is connected with the steel ball seats and the shaft centers, and the other end is a meshing structure and is meshed and connected with the shell meshing structure of the holding part. When the holding part rotates, the fixing seat is simultaneously driven to Axial movement. The adjustable torque wrench according to claim 1, wherein the sleeve portion is a replaceable sleeve. The adjustable torque wrench according to claim 1, wherein the spring adjustment element includes: A compression spring, one end of which is connected to the torque transmission element; and A small rotating cover connected to the other end of the compression spring is connected to the other end of the torsion force transmission element. By adjusting the relative distance between the small rotating cover and the spring adjustment element, the compression of the compression spring is changed , And get a relative torque. The adjustable torque wrench according to claim 3, wherein changing the compression amount of the compression spring includes linking the small rotating cover through the grip portion to change the relative distance between the small rotating cover and the fixing seat. The adjustable torque wrench according to claim 1, wherein one side of the grooves of the rotating seat is a surface with a larger slope, and the other side is a surface with a smaller slope, so as to provide the steel balls along the slope The smaller face moves to the next groove. The adjustable torque wrench according to claim 1, wherein the grooves having the specific angle include 45 degrees, 60 degrees or 90 degrees. The adjustable torque wrench according to claim 1, wherein the manner in which the shaft supports the rotating base includes vertical support or oblique angle support. The adjustable torque wrench according to claim 1, wherein when the steel ball seat drives the steel balls to move axially between the grooves on the base, the angle between the steel ball seat and the rotating seat is a vertical angle or a bevel.

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