TWI464039B - Torque release structure of a torque wrench - Google Patents

Description

Torque wrench jump structure

The present invention relates to a torque wrench, and more particularly to a multi-spring torque wrench.

Wrench, a hand tool for tightening screws, nuts, bolts, etc. However, when tightening the screw, the locking force of the wrench needs to be controlled to ensure that the screw can be fastened, but the thread on the screw is not damaged due to too large the locking force.

Therefore, the prior art provides a torque wrench that can adjust the torque value as shown in FIG. The conventional torque wrench includes an actuating member 110, a handle 120, a linkage body 130, and a torque setting device 140. The torque setting device 140 includes an elastic body 141 and a screw 142. It can be seen from the figure that after the screw 142 disposed on the handle 120 is pushed against the elastic body 141, the elastic body 141 further provides a restoring force to the linkage body 130 to urge the linkage body 130 against the actuator 110. When the screw 142 is reciprocally displaced within the handle 120, the elastic body 141 is pressed against the interlocking body 130 by a different restoring force, and the linking body 130 abuts against the actuating member 110, whereby the torque value of the torque wrench can be adjusted.

More preferably, a torque wrench includes a sleeve member 210, a sleeve 220, a linkage member 230, and an elastic member 240, as shown in FIG. The sleeve 220 is sleeved by an inner sleeve 221 and an outer sleeve 222, and the outer sleeve 222 is screwed to the end of the inner sleeve 221. The difference from the conventional torque wrench is that the relative displacement caused by the helical movement between the inner sleeve 221 and the outer sleeve 222 is used to push the elastic member 240 to adjust the torque value of the torque wrench.

However, the above-mentioned torque wrench only adjusts the torque value of the torque wrench by the restoring force of a single spring, and the accuracy of the torque value that can be adjusted is limited. Especially when the locked screw is applied to precision machinery, the screw needs to be finely adjusted to achieve a more accurate torque value.

In view of this, the inventors have relied on the experience and accumulated experience of related industries for many years, and have spent a long time actively investing in the problem and lack of the above-mentioned torque wrench, and completed a structural improvement of the torque wrench.

Therefore, one embodiment of the present invention provides a torque wrench tripping structure including a body, a triggering member, a tripping member, a first spring, a second spring, and an adjusting assembly. The body has one end. The trigger member is pivoted at one end of the body. The trip piece pushes against the trigger. The first spring pushes against the trip piece. The second spring pushes against the trip piece. The adjusting component is disposed on the body, and the adjusting component is respectively pushed against the first spring and the second spring by reciprocating displacement of the jumping component.

With the first spring and the second spring design described above, the torque wrench can be adjusted to achieve a more accurate torque value, thereby improving the problem that the conventional torque wrench cannot finely adjust the torque value.

According to an embodiment of the invention, the restoring force of the first spring may be different from the restoring force of the second spring. The adjusting component comprises a first screw member and a second screw member, wherein the first screw member is screwed to the body and is pushed against the first spring, the second screw member is screwed on the first screw member and pushed against the second spring, and the first screw The screw member has a screw hole, and the second screw member is disposed on the screw hole of the first screw member. The triggering member has a protruding portion, and the jumping member has a blocking portion, and the protruding portion of the pulling member abuts against the blocking portion of the jumping member, and The trigger member has a ratchet portion.

According to another embodiment of the present invention, the adjusting component includes a first screw member and a second screw member, wherein the first screw member is screwed to the body and is pushed against the first spring, and the second screw member is screwed corresponding to the first screw member. On the body and push against the second spring. The body further includes a spacer disposed between the first screw and the second screw to block the first spring and the second spring. The trigger member has a rolling member, the trip member has a ball, the rolling member is pressed against the ball, and the trigger member has a ratchet portion.

The structure of the first spring and the second spring has a structural design of the first spring and the second spring, so that the pitch of the first screw and the second screw are different or the elastic coefficient of the first spring and the second spring are The elastic coefficients are different, whereby the restoring force of the first spring to push the tripping member is different from the restoring force of the second spring pushing the tripping member, thereby providing the user to adjust the torque value of the torque wrench more accurately. Moreover, the invention only adds an additional spring, so that the torque value of the torque wrench can achieve finer precision, saves a lot of cost, and designs a more complicated adjustment torque value structure, and is more intuitive and simple to operate for the user.

Please refer to FIG. 3 and FIG. 4 , which are schematic and cross-sectional views of a torque wrench tripping structure according to an embodiment of the invention. The torque wrench tripping structure mainly comprises a body 310, a triggering member 320 and an adjusting component 330. The adjusting component 330 is disposed on the other end of the body 310 corresponding to the triggering member 320. The internal structure of the torque wrench tripping structure includes a tripping member 340, a first spring 350 and a second spring 360. The adjusting component 330 includes a first screw member 331 and a second screw member 332.

The triggering member 320 is pivotally disposed at one end of the body 310 and has a ratchet portion. The cap is used to sleeve the sleeve member (not shown). The adjusting component 330 can be respectively pushed against the first spring 350 and the second spring 360 corresponding to the reciprocating displacement of the triggering member 320, that is, the first screw member 331 screwed on the body 310 is pushed against the first spring 350 to make the first The spring 350 applies a restoring force to the trip member 340. The first screw member 331 defines a screw hole 333. The second screw member 332 is screwed to the screw hole 333 of the first screw member 331 and pushes against the second spring 360, so that the second spring 360 applies another restoring force to the trip. On piece 340. Therefore, the first spring 350 and the second spring 360 respectively push against the tripping member 340, wherein the first spring 350 has a restoring force different from the second spring 360 restoring force, so that the tripping member 340 is subjected to the first spring 350 and the second spring 360 The restoring force of the first spring 350 and the second spring 360 is determined by the spring wire diameter and the number of turns to determine the magnitude of the restoring force. In this embodiment, the wire diameter of the first spring 350 is larger than the wire diameter of the second spring 360, and the number of turns of the first spring 350 is greater than the number of turns of the second spring 360, so the restoring force of the first spring 350 is greater than the restoring force of the second spring 360. The triggering member 320 has a protrusion 322. The tripping member 340 has a blocking portion 341. The protruding portion 322 of the triggering member 320 abuts against the blocking portion 341 of the tripping member 340, so that the tripping member 340 pushes against the triggering member 320. . When the torque force of the torque wrench is greater than the torque value set by the first screw member 331 and the second screw member 332, the connection between the trigger member 320 and the trip member 340 is instantaneously separated from each other, and the torque release structure is known. Technology, so it will not be detailed here.

Referring to FIG. 5, a cross-sectional view of a torque wrench tripping structure in accordance with another embodiment of the present invention is shown. The component of the torque wrench tripping structure is the same as that of the previous embodiment, and includes a body 310, a triggering member 320, an adjusting component 330, a first spring 350 and a second spring 360, wherein the adjusting component 330 is first The screw member 331 and the second screw member 332 are configured. From the picture It can be seen that the first screw member 331 is screwed to the body 310, and the second screw member 332 is screwed to the body 310 corresponding to the first screw member 331. The first spring 350 with the same restoring force as the previous embodiment is greater than the second spring 360 restoring force, the first screw member 331 pushes against the first spring 350, and the second screw member 332 pushes against the second spring 360, the first spring 350 and The second spring 360 applies a different restoring force to the trip member 340, respectively. In this embodiment, the body 310 further includes a spacer 311 disposed between the first screw member 331 and the second screw member 332 to block the first spring 350 and the second spring 360, so that the first spring 350 when the torque wrench is actuated And the second spring 360 does not affect each other. The trigger member 320 has a rolling member 323. The trip member 340 has a ball 342. The roller member 323 is pressed against the ball 342. The torque release structure of the above embodiment is a conventional technique and will not be described in detail herein.

When the above two embodiments are used, when the torque value of the torque wrench is adjusted to be large, the first screw member 331 is rotated to advance toward the trip member 340, and the closer the first screw member 331 is to the trip member 340. When the first spring 350 is pressed by the first screw member 331 and the restoring force is greatly increased, it is applied to the tripping member 340; and when the torque value of the torque wrench is small, the second screw member 332 is rotated. It is advanced toward the tripping member 340. When the second screw member 332 is closer to the tripping member 340, the second spring 360 is pushed by the second screw member 332 and the restoring force is increased with a slight increase, and is applied to the trip. On piece 340. What is more, the torque value can be adjusted not only by the setting of the first spring 350 and the second spring 360 of different restoring forces, but also the first spring 350 and the second spring 360 of the same spring wire diameter and number of turns. However, changing the pitch of the first screw member 331 and the second screw member 332 causes the first spring 350 and the second spring 360 to provide different restoring forces, thereby achieving the purpose of adjusting a more accurate torque value.

It can be seen from the above embodiments of the present invention that the torque wrench jumps off the structure. Two springs with different resetting forces are provided. The spring with large restoring force can greatly adjust the torque value, and the spring with small resetting force can adjust the torque value slightly, so that the torque wrench can adjust the torque value with more precision and improve the conventional torque wrench. The shortcomings of the torque value cannot be precisely adjusted. Moreover, the present invention only provides a spring for the torque wrench structure, so that the torque wrench can be adjusted to a small amplitude torque value, and the structure is simple and does not require a large cost setting or a more complicated torque value adjusting device.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

110‧‧‧actuation

120‧‧‧Handle

130‧‧‧Continuous body

140‧‧‧Torque setting device

141‧‧‧ Elastomers

142‧‧‧ screw

210‧‧‧Sleeve parts

220‧‧‧ kit

221‧‧‧Inner casing

222‧‧‧Outer casing

230‧‧‧ linkages

240‧‧‧Flexible parts

310‧‧‧ Ontology

311‧‧‧ spacer

321‧‧‧ratchet

320‧‧‧Removable parts

323‧‧‧Rolling parts

322‧‧‧Protruding

331‧‧‧First screw

330‧‧‧Adjusting components

333‧‧‧ screw hole

332‧‧‧Second screw

341‧‧ ‧ blocking

340‧‧‧Bumping parts

350‧‧‧First spring

342‧‧‧ balls

360‧‧‧Second spring

The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood.

Figure 1 is a cross-sectional view of a conventional torque wrench with adjustable torque values.

Figure 2 is a cross-sectional view of another conventional torque wrench with adjustable torque values.

3 is a schematic view showing a structure of a torque wrench tripping structure according to an embodiment of the invention.

Fig. 4 is a cross-sectional view showing the tripping structure of the torque wrench of Fig. 3.

Figure 5 is a cross-sectional view showing a torsion wrench tripping structure in accordance with another embodiment of the present invention.

310‧‧‧ Ontology

320‧‧‧Removable parts

321‧‧‧ratchet

322‧‧‧Protruding

331‧‧‧First screw

332‧‧‧Second screw

333‧‧‧ screw hole

340‧‧‧Bumping parts

341‧‧ ‧ blocking

350‧‧‧First spring

360‧‧‧Second spring

Claims (8)

A torque wrench tripping structure comprises: a body having one end; a triggering member pivoted at the end of the body; a tripping member pushing against the triggering member; a first spring pushing Abutting the tripping member; a second spring that pushes against the tripping member, and the restoring force of the first spring is different from the restoring force of the second spring; and an adjusting component that is reciprocable relative to the tripping member Displaceably disposed on the body, the adjusting component pushes against the first spring and the second spring, and respectively adjusts a return force of the first spring and a restoring force of the second spring. The torque wrench tripping structure of claim 1, wherein the adjusting component comprises: a first screw member screwed to the body and pushed against the first spring; and a second screw member screwed to the first screw And push the second spring. The torque wrench tripping structure of claim 2, wherein the first screw member has a screw hole, and the second screw member is disposed in the screw hole. The torque wrench tripping structure of claim 1, wherein the adjusting component comprises: a first screw member screwed to the body and pushed against the first spring; and a second screw member screwed to the body and pushed against the body Second spring. The torque wrench tripping structure of claim 4, wherein the body further comprises a spacer disposed between the first screw and the second screw. The torque wrench tripping structure of claim 1, wherein the triggering member has a protrusion, the tripping member having a blocking portion, the protruding portion abutting the blocking portion. The torque wrench tripping structure of claim 1, wherein the triggering member has a rolling member having a ball that urges the ball. The torque wrench tripping structure of claim 1, wherein the triggering member has a ratchet portion.