TWM578635U - Torque wrench with improved torque adjusting structure - Google Patents

Abstract

The present invention provides a torque wrench with a torsion adjustment structure, the main rod is provided with a driving member at one end for driving the object to rotate, and the other end is provided with an adjusting member in the chamber thereof, the adjusting member has a concave hole and a perforation pair of the main rod Forming a pocket, a plug is non-threaded to position the adjusting member on the main rod, and the grip engages the second end of the main rod and is coupled to the main rod to be relatively rotatable by the adjusting member, which can be The grip is rotated relative to the main rod to expand and contract to adjust the torque, thereby constituting the creation.

Description

Torque wrench with improved torque adjustment structure

This writing is about a torque wrench, especially a torque wrench with a torsion adjustment structure.

The torque wrench is a hand tool commonly used in the industry. Because the torque wrench can adjust the torque value, the object tightened by the torque wrench can accurately reach the set torque. A conventional torque wrench has a driving member at one end and a grip at the other end. The maximum torque of the driving member can be adjusted by the relative rotation of the grip and the main rod. In order to enable the grip and the main rod to rotate relative to each other, a fixing nut is arranged at one end of the main rod, and a rotating screw is screwed in the fixing nut, the main rod is fixed by the fixing nut, and the screw is rotated Positioned on the grip, and the grip and the main rod can be rotated relative to each other.

As described above, the fixing nut is positioned on the main rod, and the main rod and the fixed nut are both provided with radial holes, and have internal thread portions in the holes, and both the main rod and the fixed nut are assembled during assembly. After the holes are aligned with each other, the assembler can lock the main rod and the fixed nut in a locking manner by driving the stop screw into the hole with a hexagonal wrench. However, the use of the screw to fix the main rod and the fixed nut in a locking manner has the following problems:

1. The holes in the main rod and the fixed nut and the set screw are relatively small. When the screw is removed by hand and locked into the hole with the above hex wrench, the stop screw will actually occur. The problem of not getting steady and falling frequently, and the action of locking the screw by the hexagonal wrench and locking into the hole is also slow, and the overall assembly efficiency is not easy.

2. The holes of the aforementioned main rod and the fixed nut are small in size, so it is often found in practice that when the stop screw is locked into the internal thread portion of the hole of the main rod and the fixed nut, the screw is stopped. A slightly longer length or a shorter depth of the internal threaded portion will cause the stop screw not to fully lock into the hole and protrude from the surface of the main rod. If the grip is rotated relative to the main rod, the grip will be stopped as described above. The protruding portion of the screw contacts and causes friction, which causes the grip to rotate unsmoothly, and even the grip is stuck and cannot be rotated.

3. In order to make the relative rotation between the aforementioned grip and the main rod smooth, the rotary screw and the main rod must be coaxial. However, if there is a gap in the fixing nut of the fixing nut, when the aforementioned stopping screw is locked to the fixing nut, the stopping screw pushes the fixing nut during the locking process, causing the screwing screw of the screwing to deviate and The problem of different axes of the main pole will cause the relative rotation between the grip and the main rod to be unsmooth.

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 with an improved torsion adjustment structure, in which the adjusting member and the main rod have concave holes and perforations aligned to form a receiving groove, so that the plug member is non-threaded into the receiving groove and The adjusting member is positioned on the main rod, so that the main rod and the grip are coupled to each other to be relatively rotatable.

An embodiment of the present invention provides a torque wrench with a torsion adjustment structure, comprising: a main rod having a first end and a second end remote from each other, and a chamber extending along the length direction, The chamber penetrates the second end, the main rod is provided with a driving member at the first end, the main rod has a through hole at a second end and penetrates the chamber radially; an adjusting member is accommodated in the chamber and is located at the second portion of the main rod The adjusting member has a radial concave hole aligned with the through hole to form a receiving groove; a plug member having a height greater than a depth of the concave hole and a circular arc surface exposed to the through hole, the plug member being located in the receiving groove and Positioned in a non-threaded manner, the adjusting member is positioned at the second end of the main rod by the plug; and a grip engages the second end of the main rod and is relatively rotatable with the main rod by the adjusting member to grip Rotate and retract relative to the main rod to adjust the torque.

Thereby, the adjusting member and the main rod respectively have a concave hole and a perforation, and when the concave hole and the perforation are aligned, a cavity is formed, and the plug member can be quickly placed into the receiving groove due to the non-spiral setting, and the adjusting member can be quickly installed and positioned. On the main pole to improve the efficiency of the torque wrench assembly. In addition, the plug has a circular arc surface exposed to the perforation. When the plug member is connected to the second end of the main rod, the arc surface and the inner side wall of the grip are only sliding friction even if there is contact, and the grip does not occur. The problem of not turning smoothly or turning.

Preferably, the adjusting member comprises a fixing nut and a rotating screw, the fixing nut has an internal threaded portion disposed in the axial direction, and the fixing nut has a concave hole; the rotating screw has an external threaded portion screwed to the fixing a threaded portion of the nut, the rotary screw has one end in the chamber and the other end protrudes from the second end, and the screw and the grip are engaged to rotate synchronously, so that the grip drives the rotary screw to rotate relative to the fixed nut And the main rod telescopic to adjust the torque.

Thereby, the plug member is not screwed to the fixed nut, and the rotary screw does not deviate and the problem of the different axis of the main rod occurs, so that the relative rotation between the grip and the main rod can be maintained. Smoothness.

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. 4, the present invention provides a torque wrench with a torsion adjustment structure, which comprises a main rod 10, an adjusting member 20, two plug members 30 and a grip 40, wherein:

The main rod 10 has a first end 11 and a second end 12 away from each other, and the main rod 10 has a chamber 13 extending along the length of the main rod 10, and the chamber 13 is penetrated through the main rod 10 The two ends 12, the main rod 10 is provided with a driving member 14 at the first end 11, and the main rod 10 has a through hole 15 on the opposite sides of the second end 12, and the through hole 15 penetrates the chamber along the radial direction of the main rod 10. 13. In the present embodiment, the main rod 10 is a hollow tube body, and the chamber 13 also penetrates the first end 11 (not shown).

The adjustment member 20 is received in the chamber 13 and the adjustment member 20 is located at the second end 12 of the main rod 10. In the present embodiment, the adjusting member 20 includes a fixing nut 21 and a rotating screw 22, and the fixing nut 21 has an internal thread portion 211 which is disposed along the axial direction of the fixing nut 21, and In the present embodiment, the fixing nut 21 has a recessed hole 23 on each of the opposite sides. Each of the recessed holes 23 is disposed in the radial direction of the fixing nut 21, and the two recessed holes 23 are provided corresponding to the positions of the respective through holes 15.

The rotary screw 22 has an external thread portion 221, and the external thread portion 221 of the rotary screw 22 is screwed to the internal thread portion 211 of the fixed nut 21, and one end of the rotary screw 22 is located in the chamber 13, and the screw is rotated. The other end of 22 extends beyond the second end 12. In this embodiment, the end of the rotary screw 22 in the chamber 13 has a blocking portion 222. The width of the blocking portion 222 is larger than the rotating screw 22, and when the rotating screw 22 is rotated, the blocking portion 222 abuts the fixing screw. At the time of the cap 21, the rotary screw 22 can no longer be rotated (as shown in FIG. 3) because the blocking portion 222 blocks the fixing nut 21, so as to prevent the screwing of the screwing screw 22 from being disengaged and the screwing of the fixing nut 21 due to the rotation. .

Each of the recesses 23 and the corresponding through holes 15 are aligned to form a recess 50, and the two plugs 30 are respectively inserted into the recesses 50 (as shown in FIGS. 3 and 4), and the two plugs 30 are placed in the respective capacities. The slot 50 is non-threaded and placed directly, and the height of the plug 30 is greater than the depth of the recess 23, and the plug 30 has a circular arc surface 31 exposed to the through hole 15, and the adjusting member 20 is positioned by the plug 30 on the main rod 10. The second end 12 is. The term "non-spiral" refers to a structure in which the plug member 30 is not threaded and locked between the main groove 10 and the fixed nut 21 in the receiving groove 50, but the plug member 30 directly slides into the receiving groove 50.

In the present embodiment, the recessed holes 23 and the through holes 15 are all round holes, and the plug member 30 is a ball, the recessed holes 23 and the through holes 15 have equal inner diameters, and the outer diameter of the plug member 30 and the recessed holes 23 or perforations The inner diameter of 15 is approximately equal. In the present embodiment, the main rod 10 has a retaining edge 16 at the circumference of the through hole 15, the diameter of the plug 30 is slightly larger than the retaining edge 16, the plug 30 enters the receiving groove 50, and the plug 30 is in the receiving groove 50. When it is blocked by the retaining edge 16 and positioned, the plug 30 is not disengaged from the pocket 50.

The grip 40 engages the second end 12 of the main rod 10, and the grip 40 and the main rod 10 are coupled to each other by the adjustment member 20 to be relatively rotatable, and the grip 40 is rotated relative to the main rod 10 to expand and contract to adjust the torque. In the present embodiment, the rotary screw 22 and the grip 40 are engaged to rotate synchronously, and the grip 40 drives the rotary screw 22 to rotate relative to the fixed nut 21, and the grip 40 and the main rod 10 are telescoped to adjust the torque. In the present embodiment, the main rod 10 is provided with a support member 17 between the first end 11 and the second end 12. The support member 17 is a C-shaped buckle in this embodiment, so that the support member 17 corresponds to the plug member 30. The inside of the grip 40 is supported to avoid the grip 40 being shaken by the gap between the grip 40 and the main rod 10.

When the adjusting member 20 is to be assembled to the main rod 10 to join the grip 40, the rotating screw 22 is screwed to the fixing nut 21, and the fixing nut 21 is placed in the chamber 13 from the second end 12 of the main rod 10. Therefore, one end of the rotating screw 22 having the blocking portion 222 is located in the chamber 13, and can be rotated by the fixing nut 21 in the chamber 13 to the two recessed holes 23 and the perforations 15 on both sides of the main rod 10, By forming the two-cavity 50, the plug 30 is placed in the cavity 50 to position the fixing nut 21 in the chamber 13 of the main rod 10 so that the fixing nut 21 does not move along the length of the main rod 10. The axial rotation of the main rod 10 allows the grip 40 to be engaged with the rotary screw 22 at the second end 12 of the main rod 10, that is, the grip 40 can be rotated and the main rod 10 can be expanded and contracted to adjust the torque. Wherein, when the grip 40 is engaged with the rotary screw 22, the plug member 30 is also restrained by the inner side wall 41 of the grip 40, so that the plug member 30 does not escape from the receiving groove 50, that is, the aforementioned retaining edge 16 The inner side wall 41 of the grip 40 and the inner side wall 41 of the grip 40 can restrict the plug member 30 in the receiving groove 50.

From the above description, it is not difficult to find the characteristics of this creation,

1. The adjusting member 20 has a recessed hole 23 in the fixing nut 21, and the main rod 10 has a through hole 15 and can be aligned with the recessed hole 23 to form a receiving groove 50. The plug member 30 is fixed in the receiving groove 50 by the non-spiral fixing. The nut 21 or the main rod 10 can be quickly placed into the pocket 50, and the adjusting member 20 can be quickly installed and positioned on the main rod 10, thereby improving the efficiency of assembling the torque wrench.

2. The plug member 30 has a circular arc surface 31 exposed to the through hole 15. When the plug member 30 is assembled to the second end 12 of the main rod 10, even if the arc surface 31 and the inner side wall 41 of the grip 40 are in contact, Since the circular arc surface 31 has a circular arc relationship and is only sliding friction, there is no problem that the grip 40 does not rotate smoothly or cannot be rotated.

3. Since the plug 30 is placed in the cavity 50 in a non-spiral manner, the plug 30 does not push the fixed nut 21, and the rotary screw 22 does not deviate, so the screw 22 is rotated. The problem that the main rod 10 does not have a different axis occurs, and the relative rotation between the grip 40 and the main rod 10 can be maintained.

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 pole

11‧‧‧ first end

12‧‧‧ second end

13‧‧‧ chamber

14‧‧‧ Drives

15‧‧‧Perforation

16‧‧‧ 挡缘

17‧‧‧Support

20‧‧‧Adjustment

21‧‧‧Fixed nuts

211‧‧‧Threaded Department

22‧‧‧Rotating screw

221‧‧‧External thread

222‧‧ ‧ blocking

23‧‧‧ recessed hole

30‧‧‧plugs

31‧‧‧Arc face

40‧‧‧ grip

41‧‧‧ inner side wall

50‧‧‧ 容容

Figure 1 is a schematic view of the assembly of the main rod and the grip of the torque wrench of the present invention.  Fig. 2 is a schematic view showing the assembly of the adjusting wrench and the main rod of the torque wrench of the present invention.  Figure 3 is a partial cross-sectional structural view of the torque wrench of the present invention at the grip.  Figure 4 is a cross-sectional view of the plug of the torque wrench of the present invention, which is limited to the pocket.  

Claims (10)

A torque wrench with improved torque adjustment structure, comprising:  a main rod having a first end and a second end remote from each other, and a chamber extending in the longitudinal direction, the chamber extending through the second end, the main rod is provided with a driving member at the first end The main rod has a through hole at the second end and penetrates the chamber in a radial direction;  An adjusting member is disposed in the chamber and located at the second end of the main rod, the adjusting member has a radial recessed hole aligned with the through hole to form a receiving groove;  a plug member having a height greater than a depth of the recessed hole and having a circular arc surface exposed to the through hole, the plug member being located in the pocket and being positioned in a non-threaded manner, the adjusting member being positioned by the plug member The second end of the main rod;  A grip engages the second end of the main rod and is rotatable relative to the main rod by the adjusting member, and the grip is rotated relative to the main rod to expand and contract to adjust the torque.   The torque wrench with improved torque adjustment structure according to claim 1, wherein the plug is a ball. The torsion wrench with a torsion adjustment structure according to claim 2, wherein the main rod has a retaining edge on the circumference of the perforation, the diameter of the plug is larger than the retaining edge, and the plug is in the receptacle The middle is blocked by the retaining edge and positioned. The torque wrench with improved torque adjustment structure according to claim 3, wherein the recessed hole and the through hole are round holes. The torque wrench with improved torque adjustment structure according to claim 4, wherein the recessed hole and the punching hole have the same inner diameter, and the outer diameter of the plug member and the inner diameter of the recessed hole or the through hole are substantially equal. The torque wrench with improved torque adjustment structure according to claim 1, wherein the adjusting member comprises a fixing nut and a rotating screw, the fixing nut has an internal threaded portion disposed in the axial direction, and the fixing The nut has the recessed hole; the rotary screw has an external threaded portion screwed to the inner threaded portion of the fixed nut, the rotary screw has one end in the chamber and the other end protrudes from the second end, The rotary screw and the grip are engaged to rotate synchronously, and the grip rotates the rotary screw relative to the fixed nut to expand and contract with the main rod to adjust the torque. A torsion wrench with a torsion adjustment structure according to claim 6, wherein the rotary screw has a stop at one end of the chamber, the width of the stop being larger than the rotary screw. The torque wrench with improved torque adjustment structure according to claim 1, wherein the main rod is a hollow tube body, and the chamber also penetrates the first end. The torsion wrench with the improved torque adjustment structure according to claim 1, wherein the main rod is provided with a support member between the first end and the second end, and the support member and the plug member support the grip. Put it inside to avoid shaking the grip. The torque wrench with improved torque adjustment structure according to claim 9, wherein the support member is a C-shaped buckle.