TWM572815U - Torque wrench with torque adjustment positioning structure - Google Patents

Abstract

The present invention provides a torque wrench having a torque adjustment positioning structure, wherein the grip can be displaced along the axial direction of the main rod body between an adjusted position or a locked position, and the first stop portion and the first portion are displaced to each position. The two blocking portions are positioned to block each other in the axial direction, and the first engaging portion and the second engaging portion are separated in the adjusting position, so that the grip can be rotated relative to the main rod to adjust the torque of the driving head to operate; The portion and the second engaging portion are engaged in the locking position, so that the grip and the main rod body are fixed to each other without relative rotation to achieve the effect of actually locking the main rod body and the grip when in the locking position.

Description

Torque wrench with torque adjustment positioning structure

The present invention relates to a torque wrench, and more particularly to a torque wrench having a torque adjustment positioning structure.

According to the new patent of the Republic of China Patent Publication No. M434652, a torque wrench is disclosed, which comprises a main rod body, a grip and a locking device, the grip of which can be along a main rod between a locked position and an adjusted position. The body moves relatively. When in the locked position, the locking device can limit the rotation of the grip relative to the main body; and in the adjusted position, the grip can be rotated relative to the main body to adjust the torque. However, conventional torque wrenches have the following problems:

1. The locking device is provided with a bead body between the main rod body and the grip, and the grip has a ring groove formed along the inner wall thereof, and has a spring top staying on the grip to adjust the position thereof. Pushing against the locking position, the bead is biased against the bead by the bevel on the inner wall of the ring groove, so that the bead is pressed by the radial direction of the grip and is pressed against the main body, so that the main body and the grip are The lock is in a state of being locked. However, because the material of the bead is harder than the grip, the grip is often pressed by the bead of the bead. The grip of the bead will wear or deform on the inner wall of the ring groove for a long time, and the bead is easy to be pressed when the main body is pressed. In the case of looseness, the problem of inherent failure of the lock between the main body and the grip is caused.

2. The conventional torque wrench can be locked by the locking device after adjusting the torque between the main body and the grip, but when the bead body is subjected to the inclined surface of the inner wall to the main body to the locked state, The torque wrench does not have any sound or feel. If the operator is worried about whether the main body and the grip are in the locked state, the operator will often repeat the operation of the locking device several times. It is often impossible to confirm that the main body and the grip are in the locked state after the first operation of the locking device is completed, thereby causing inconvenience in the operation of the torque wrench.

Therefore, how to solve the problem of the above-mentioned conventional torque wrench is the main focus of this creation.

In order to solve the above problems, the present invention provides a torque wrench having a torque adjustment positioning structure, which is mainly capable of displacement along the axial direction of the main rod body between an adjustment position or a locking position, and is displaced to each position. a stop portion and a second stop portion are formed in the axial direction to be mutually positioned, and the first engaging portion and the second engaging portion are separated in the adjusting position, so that the grip and the main rod body are relatively rotatable to adjust the torque; The first engaging portion and the second engaging portion are engaged in the locked position, and the grip and the main rod body are fixed to each other without relative rotation, and the main rod body and the grip are surely locked in the locked position.

An embodiment of the present invention provides a torque wrench having a torque adjustment positioning structure, comprising:

a main rod body having a first end and a second end, the main rod body is provided with a driving head at the first end, and the main rod body has a first stopping portion at the second end, the main rod And having a first engagement portion adjacent the first stop at the second end;

a grip is coupled to the second end of the main rod body, the grip has a second stop portion corresponding to the first stop portion, and has a second joint portion corresponding to the first joint portion, the grip And the main rod body can be relatively displaced between an adjusted position or a locked position, and when displaced to each position, the first stop portion and the second stop portion are mutually blocked and positioned, the first joint portion and the first joint portion The two engaging portions are separated in the adjusting position, so that the grip can be rotated relative to the main rod to adjust the torque of the driving head; and the first engaging portion and the second engaging portion are engaged in the locking position, so that the grip and the main rod are mutually Fixed and not relative to rotation.

Thereby, after the grip is displaced along the axial direction of the main rod body, the positioning in the adjusting position or the locking position is caused by the first blocking portion and the second stopping portion forming a stop in the axial direction of the main rod body. That is to say, the locking between the grip and the main rod body is not caused by radial pressing without structural wear or deformation, so that the positioning of the main rod body and the grip in the adjusting position or the locking position can be long-lasting and effective, Solve the problem of failure of the main body and the grip of the conventional torque wrench.

In a preferred embodiment, the first blocking portion has a ring groove at the second end of the main rod body, a limiting ring is disposed in the ring groove, and the second stopping portion is provided with a plurality of limits for the grip. The groove, the plurality of limit grooves are arranged along the length direction of the grip, and the positions of the plurality of limit grooves respectively correspond to the adjustment position and the locking position, and the grip has a relatively raised ring convex portion between the plurality of limit grooves, the limit The ring can be respectively trapped in each of the limiting grooves to position the second end of the main body in the adjusting position or the locking position, and the limiting ring is elastic and can be pressed by the ring convex portion to reduce the outer diameter thereof. The bit ring can be displaced between the plurality of limit grooves as the grip is axially displaced.

Therefore, when the limit ring is trapped in each of the limit grooves, a sense of passage is generated, and even if the limit ring makes a sound due to the collision in the limit groove, the effect can be prompted in the adjusted position or the locked position.

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. 8 , the present invention provides a torque wrench having a torque adjustment positioning structure, which comprises a main body 10 and a grip 20, wherein:

The main rod body 10 is an elongated rod. The main rod body 10 has a first end 11 and a second end 12. The main rod body 10 is provided with a driving head 13 at the first end 11 and the main rod 10 at the second end. 12 has a first stop, and the main body 10 has a first joint at the second end 12.

The grip 20 is coupled to the second end 12 of the main rod body 10, the grip 20 has a second stop portion and a second joint portion, and the second stop portion is located corresponding to the first stop portion of the main rod body 10. Further, the second joint portion position is provided corresponding to the first joint portion of the main rod body 10. Thereby, the grip 20 can be displaced along the axial direction of the main rod 10 between an adjustment position A (as shown in FIG. 2, 5) or a locking position B (shown in FIG. 4), and is displaced to the adjustment position A. Or when the position B is locked, the first stop portion and the second stop portion are mutually positioned in the axial direction, and the first joint portion and the second joint portion are separated when the position A is adjusted. The grip 20 is rotatable relative to the main shaft 10 to adjust the torque of the driving head 13 to actuate. Further, the first engaging portion and the second engaging portion are engaged at the locking position B, so that the grip 20 and the main rod body 10 are fixed to each other without relative rotation.

In a preferred embodiment, the first blocking portion has a ring groove 14 and a limiting ring 15 at the second end 12 of the main body 10 , and the limiting ring 15 is disposed in the ring groove 14 . In addition, the first joint portion is composed of a plurality of first stoppers 16 and a plurality of first groove chambers 17, and the plurality of first stoppers 16 and the plurality of first groove chambers 17 are adjacent to the ring groove 14 and the limit ring 15, and the first plurality The stopper 16 is arranged in the outer circumference of the main rod body 10 at the second end 12, and the plurality of first groove chambers 17 are formed at intervals between the plurality of first stoppers 16 (as shown in Fig. 6).

In a preferred embodiment, the second stopping portion is provided with two limiting grooves 21, 21A for the grip 20, and the two limiting grooves 21, 21A are spaced along the length direction of the grip 20, wherein the limit is The groove 21 provides the grip 20 corresponding to the positioning position A and the positioning ring 15 (as shown in FIGS. 2 and 5), that is, when the limiting ring 15 is trapped in the limiting groove 21, the grip 20 is placed on the main rod. The second end 12 of the body 10 is positioned at the adjustment position A; the other limit groove 21A provides the position of the grip 20 at the corresponding locking position B and the limit ring 15 (as shown in FIG. 4), that is, the limit ring 15 is trapped. In the position of the groove 21A, the grip 20 is positioned at the second end 12 of the main rod 10 at the locking position B. The grip 20 has a ring convex portion 22 between the two limiting grooves 21 and 21A. The ring convex portion 22 is relatively bulged between the two limiting grooves 21 and 21A, and the limiting ring 15 is elastic and can be ring-shaped convex portion. 22 pressing and shrinking the outer diameter (as shown in FIG. 3), the limit ring 15 can be displaced between the two limit grooves 21, 21A with the axial displacement of the grip 20.

In a preferred embodiment, the second engaging portion of the grip 20 has a plurality of second stops 23 and a plurality of second slots 24 therein, and the plurality of second stops 23 are ring-shaped in the grip 20, plural The second trough chambers 24 are spaced apart between the plurality of second stops 23 (as shown in Figure 6). In the present embodiment, the main body 10 has an extension 18 at the second end 12, and the plurality of first stops 16 and the plurality of first slots 17 are looped over the extension 18. The grip 20 has a recessed portion 25 at one end. The recessed portion 25 is accessible for the extension portion 18 to engage the grip 20 with the second end 12 of the main rod body 10. The plurality of limiting grooves 21, 21A are provided in the recess portion 25. In the grip 20, the plurality of second stops 23 and the plurality of second groove chambers 24 are in the recesses 25.

When the grip 20 is positioned at the adjustment position A with respect to the main rod body 10, the plurality of first stoppers 16 and the plurality of second stoppers 23 are dislocated and separated from each other (as shown in FIGS. 2 and 5). The main body 10 and the grip 20 are relatively rotatable. When the position B is locked, the plurality of first stops 16 are correspondingly located in the plurality of second slots 24, and the plurality of second stops 23 are correspondingly located in the plurality of first slots 17, with the plurality of first stops 16 and the plurality The two stoppers 23 are staggered to block each other (as shown in FIGS. 4 and 6), so that the main rod body 10 and the grip 20 are fixed to each other, and the main rod body 10 and the grip 20 are not allowed to rotate relative to each other, so that the main rod body 10 and the grip 20 are locked to each other after adjusting the torque.

In a preferred embodiment, the limiting ring 15 is made of a hard material, such as steel, iron or the like, and the limiting ring 15 is disconnected on one side to form an opening 151, and the opening 151 is used for the limiting ring. 15 can shrink its outer diameter when pressed. When the retaining ring 15 is displaced between the second limiting grooves 21 and 21A by the displacement of the gripping ring 15, the limiting ring 15 is pressed by the annular convex portion 22 to reduce the opening 151 (as shown in FIG. 3). The outer diameter of the bit ring 15 is retracted to allow the ring protrusion 22 to pass over, and the limit ring 15 generates a rebound force pre-stress at this time. When the limit ring 15 is displaced with the grip 20, it encounters any limit groove. 21, 21A will bounce, you can once again fall into the limit groove 21, 21A and positioned.

It is not difficult to find out from the above that the advantages of this creation are:

1. When the grip 20 is displaced along the axial direction of the main rod body 10, the grip 20 is positioned at the adjustment position A or the lock position B, respectively, by the first stop portion (such as the aforementioned limit ring 15) and the second The blocking portion (such as the aforementioned limiting groove 21, 21A) is formed in the axial direction of the main rod body 10, that is, the locking between the grip 20 and the main rod body 10 is not like the conventional torque wrench is Radial pressing, so that the structure of the grip 20 is not worn or deformed, so that the positioning of the main rod 10 and the grip 20 in the adjustment position A or the locking position B can be prevented from being invalid due to long use time. The problem is that it can be used for a long time, so as to solve the problem that the main body of the conventional torque wrench and the lock of the grip are disabled.

2. When the grip 20 is axially displaced relative to the main rod body 10, when the limit ring 15 is trapped in each of the limit grooves 21 and 21A, the limit ring 15 is rebounded and returned to generate a sense of passage, and the limit ring is formed. It is also possible that the grip 20 is hit by the rebound reset in the limit grooves 21, 21A and the sound is generated, so that the grip 20 can produce a prompt effect in the adjustment position A or the lock position B, so that the user can After the first operation is completed, it is confirmed that the main body 10 and the grip 20 are in the locked state.

As shown in FIG. 7, the main difference between the present embodiment and the foregoing embodiment is that the limiting ring 15A is made of a soft material in the embodiment, so that the limiting ring 15A is pressed by an external force. When squeezing, deformation occurs (as shown in Fig. 8), whereby the limiting ring 15A is displaced by the displacement of the grip 20 between the two limiting grooves 21, 21A, and the limiting ring 15A is soft by itself. The material, so that the limit ring 15A can also be reduced by the force of pressing by the ring convex portion 22 (the deformation of the limit ring 15A itself), the outer diameter of the limit ring 15A is also retracted to allow the ring convex portion When the 22 is crossed, the limit ring 15A generates a pre-stress of the deformation reset at this time. When the limit ring 15A is displaced with the grip 20 and encounters any limit groove 21, 21A, it will bounce back and fall into the limit groove 21 again. Positioned 21A to achieve the same effect as the previous embodiment.

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.

10‧‧‧ main body

11‧‧‧ first end

12‧‧‧ second end

13‧‧‧Drive head

14‧‧‧ Ring groove

15‧‧‧ Limit ring

151‧‧‧ openings

15A‧‧‧ Limit ring

16‧‧‧First stop

17‧‧‧First chamber

18‧‧‧Extension

20‧‧‧ grip

21, 21A‧‧‧ Limiting ditch

22‧‧‧ ring convex

23‧‧‧second stop

24‧‧‧Second trough room

25‧‧‧Depression

A‧‧‧Adjust the position

B‧‧‧Lock position

1 is an exploded perspective view of a torque wrench of a first embodiment of the present invention. Figure 2 is a perspective cross-sectional view of the first embodiment of the present invention in the grip portion, in which the grip is in the adjusted position. Figure 3 is a perspective, cross-sectional view of the first embodiment of the present invention in the grip portion, with the grip positioned between the adjusted position and the locked position. Figure 4 is a perspective cross-sectional view of the first embodiment of the present invention in the grip portion, in which the grip is in the locked position. Figure 5 is a partial cross-sectional view of the torque wrench of the first embodiment of the present invention at the grip, in which the grip is in the adjusted position. 6 is a cross-sectional view showing the torque wrench of the first embodiment of the present invention in which the first stopper and the second stopper are alternately arranged to be mutually blocked when the grip is in the locked position. Figure 7 is an exploded perspective view of the torque wrench of the second embodiment of the present invention. Figure 8 is a partial cross-sectional view of the torque wrench of the second embodiment of the present invention at the grip, wherein the grip is positioned between the adjusted position and the locked position, and the bit ring is deformed by the ring projection.

Claims (7)

A torque wrench having a torque adjustment positioning structure, comprising: a main rod body having a first end and a second end, wherein the main rod body is provided with a driving head at the first end, and the main rod The rod body has a first stopping portion at the second end, the main rod body has a first engaging portion near the first stopping portion at the second end, and a grip engaged with the main rod body a second end of the grip having a pair of second stop portions that should be provided with the first stop portion and having a pair of second engagement portions that should be provided with the first engagement portion, the handle being adjustable Displacement between the position or a locking position along the axial direction of the main rod body, and when the position is displaced to the respective positions, the first blocking portion and the second stopping portion form a stop in the axial direction and are mutually positioned, The first engaging portion and the second engaging portion are separated in the adjusting position, so that the grip can be rotated relative to the main rod to adjust the torque of the driving head; and the first engaging portion and the second engaging portion are When the locking position is engaged, the grip and the main rod body are fixed to each other without relative rotation. The torque wrench of claim 1 , wherein the first blocking portion has a ring groove at the second end, and a limiting ring is disposed in the ring groove. The second stopping portion is provided with a plurality of limiting grooves for the grip, the plurality of limiting grooves are spaced along the length direction of the grip, and the positions of the plurality of limiting grooves respectively correspond to the grips The adjusting position and the locking position, the grip has a relatively raised ring convex portion between the plurality of limiting grooves, and the limiting ring can be respectively trapped in each of the limiting grooves to allow the grip to be in the main rod body The second end is positioned at the adjusted position or the locked position, and the limiting ring is elastic and can be pressed by the annular protrusion to reduce the outer diameter thereof, so that the limiting ring can be axially displaced with the grip. The position of the complex limit groove is changed. The torque wrench of claim 2, wherein the first engaging portion is a plurality of first stops and intervals formed on the outer circumference of the second end, and the plurality of first stops are formed. a plurality of first chambers; the second joint portion has a plurality of second stops in the inner ring of the grip and a plurality of second slots formed between the plurality of second stops, the grip being adjusted In the position, the plurality of first stops and the plurality of second stops are separated from each other in front and rear, and are separated from each other; and when the grip is in the locked position, the plurality of first stops are corresponding to the second plurality of slots. And the plurality of second stoppers are located in the plurality of first slots, and the plurality of first stops and the plurality of second stops are alternately arranged to block each other, so that the main rod and the grip are fixed to each other. Do not rotate relative to each other. The torque wrench of claim 3, wherein the limiting ring is made of a hard material, and the limiting ring is disconnected at one side to form an opening, and the opening is used for the limiting The ring can shrink its outer diameter when pressed. A torque wrench having a torque adjustment positioning structure according to claim 4, wherein the limit ring is made of a metal material. A torque wrench having a torque adjustment positioning structure according to claim 3, wherein the limit ring is made of a soft material, and the limit ring is used for the soft material to reduce the outer diameter of the limit ring when pressed. The torque wrench of claim 3, wherein the main body has an extension at the second end, and the plurality of first stops and the plurality of first groove rings are arranged in the extension a grip having a recess at one end for the extension to be engaged with the second end of the main rod, the plurality of limiting grooves being disposed in the recess and in the grip, and in the recess The plurality of second stops and the plurality of second slots are provided.