TW202333907A - Torque wrench with trip mechanism - Google Patents

Abstract

A torque wrench with a trip mechanism includes a handle rod and a driving rod. There is only one tripping seat in the handle rod. One end of the tripping seat is provided with a positioning groove and a reset surface surrounding the positioning groove. The driving rod is pivotally inserted into the handle rod, one end of the driving rod is provided with an abutting portion, and a surface of the abutting portion is spherical. When the driving rod is in a ready position, the abutting portion abuts the positioning groove. When the driving rod is in a tripping position, the abutting portion is separated from the positioning groove and abuts against the reset surface. Thus, the torque wrench can provide a stable tripping effect.

Description

Torque wrench with stable trip mechanism

The present invention mainly discloses a torque wrench, especially a torque wrench with a stable tripping mechanism.

Please refer to the "Torsion Structure" patent case of China Patent No. I701110, which is a torsion structure that includes: a first system provided with a first receiving tank; a second system provided with a second receiving tank; A first wall surface, a second wall surface, a first pivot part and a first joint part; a resisting member is provided with a receiving groove; a first elastic member; a jumping block; an adjusting group; a third This system is provided with a driving part, a pivot seat, a second pivot part, a first screw part and a pushing part; a first screw part is provided with a first abutting part, and the first abutting part is The first abutment portion is slightly exposed outside the first screw portion, and the first abutment portion is aligned with the first wall. When the rotation torque reaches the set value when the rotation is clockwise, the third body is in the second position. The inside of the groove is deflected, causing the first abutment portion to abut and knock on the first wall surface to emit a prompt sound.

However, the escape block of the above-mentioned torsion structure is in the shape of a square. When the rotational torque reaches the set value, the escape block must be rotated to cause the third body to deflect and hit the first wall. After the torque is released, , under the action of friction, it is impossible to ensure that the jump block returns to the same position, resulting in an error in the torque value every time the jump block flips, and it is impossible to accurately jump out and flip at the torque set value.

In view of the shortcomings of the above-mentioned conventional structures, the inventor has designed a torque wrench with a stable tripping mechanism, which can overcome all the shortcomings of the above-mentioned conventional structures.

The main purpose of the present invention is to provide a torque wrench with a stable tripping mechanism, which includes a handle and a driving rod. The handle is provided with only one escape seat, and one end of the escape seat is provided with a The positioning groove and a reset surface surrounding the positioning groove, the reset surface forms an inner edge adjacent to the inner periphery of the positioning groove, the reset surface forms an outer edge away from the outer periphery of the positioning groove, the handle is provided with a radial Virtually and passing through a datum plane of the positioning groove, the distance between the inner edge and the datum plane along the axial direction of the handle forms a first height, and the distance between the outer edge and the datum plane along the axial direction of the handle forms a second height. , the second height is greater than the first height, the driving rod can be pivotally inserted into the handle rod between the ready position and the escape position, one end of the driving rod is provided with a top, and the surface of the top It is in the shape of a spherical surface. When the driving rod is in the ready position, the top of the abutment is against the positioning groove. When the driving rod is in the tripping position, the top of the abutment is separated from the positioning groove and abuts against the reset surface. The torque wrench can provide a stable tripping effect through the above structure.

The distance between the reset surface and the reference plane along the axial direction of the handle gradually increases from a position adjacent to the inner edge to a position adjacent to the outer edge.

The reset surface is conical in shape.

The drive rod is provided with an accommodating groove and an escape piece at one end of the top. The escape piece is a spherical body. One side of the escape piece is arranged in the accommodating groove and the other side protrudes from the accommodating groove. The top of the accommodating groove is provided on the side of the escape piece protruding from the accommodating groove.

The diameter of the jumper forms a spherical diameter, the inner edge is circular, and the diameter of the inner edge along the radial direction of the handle forms an aperture, and the aperture of the inner edge is smaller than the spherical diameter of the jumper.

Other objects, advantages and novelty of the present invention will become more apparent from the following detailed description and the accompanying drawings.

Regarding the technology, means and effects used in the present invention, a preferred embodiment is described in detail below along with the drawings. This is for illustrative purposes only, and the patent application is not limited by this structure.

Referring to Figures 1 to 5, there are three-dimensional appearance views, three-dimensional exploded views and cross-sectional structural views of the torque wrench with a stable trip mechanism according to the present invention. The torque wrench 10 of the present invention includes a handle 20 and a driving rod 30; wherein:

The handle 20 is provided with only one escape seat 21. One end of the escape seat 21 is provided with a positioning groove 211 and a reset surface 212 surrounding the positioning groove 211. The reset surface 212 is adjacent to the inner peripheral edge of the positioning groove 211. An inner edge 213 is formed, and the reset surface 212 forms an outer edge 214 away from the outer peripheral edge of the positioning groove 211. The handle 20 is provided with a virtual reference plane P along its radial direction and passes through the positioning groove 211. The inner edge 213 The distance from the axial direction of the handle 20 to the reference plane P forms a first height H1, and the distance from the outer edge 214 to the reference plane P along the axial direction of the handle 20 forms a second height H2. The second height H2 is greater than the first height H1.

The driving rod 30 can be pivotally inserted into the handle 20 between the ready position and the escape position. One end of the driving rod 30 is provided with a top 31, and the surface of the top 31 is spherical. When the driving rod 30 is in the ready position, the abutment portion 31 abuts against the positioning groove 211 . When the driving rod 30 is in the tripping position, the abutment portion 31 breaks away from the positioning groove 211 and abuts against the reset surface 212 .

The distance between the reset surface 212 and the reference plane P along the axial direction of the handle 20 gradually increases from a position adjacent to the inner edge 213 to a position adjacent to the outer edge 214. The reset surface 212 can be in the shape of a cone or a sphere. The reset surface 212 is in the shape of a concave arc. In this embodiment, the reset surface 212 is in the shape of a cone.

The driving rod 30 has an accommodating groove 32 and a tripping piece 33 at one end of the top 31. The tripping piece 33 is a spherical body, and one side of the tripping piece 33 is disposed in the accommodating slot 32. The other side protrudes from the accommodating groove 32 , and the butt portion 31 is provided on the side of the jumper 33 that protrudes from the accommodating groove 32 .

The diameter of the jumper 33 forms a spherical diameter D1. The inner edge 213 is circular. The diameter of the inner edge 213 along the radial direction of the handle 20 forms an aperture D2. The aperture D2 of the inner edge 213 is smaller than the diameter of the jumper 33 . The ball diameter D1 of the release piece 33 is determined.

The torque wrench 10 can provide a stable tripping effect through the above structure. The trip seat 21 is pushed by the spring 90 to push the top 31 with a preset thrust. When the driving rod 30 rotates the workpiece, if the torque endured by the driving rod 30 is less than the preset tripping torque, the driving rod 30 will The rod 30 remains in the ready position. When the torque endured by the driving rod 30 is greater than the preset tripping torque, the driving rod 30 can push the tripping seat 21 to move and compress the spring 90 during the pivoting process. The top part 31 is separated from the positioning groove 211 to achieve a jumping effect. Utilizing the spherical design of the surface of the abutment top 31 , the cooperation between the abutment top 31 and the positioning groove 211 will not cause positional errors, so that the torque wrench 10 can be preset on the drive rod 30 every time. The tripping action is completed when the torque is tripped, and the reset surface 212 can be used to provide a reset effect. The top 31 can roll or slide on the reset surface 212, and cooperate with the thrust of the spring 90 to make the driving rod 30 return. to the ready position.

From the above, it can be concluded that the present invention has the following advantages:

1. It is a torque wrench with a stable tripping mechanism according to the present invention. The torque wrench includes a handle and a driving rod. The handle is provided with only one escape seat. One end of the escape seat is provided with a positioning groove and A reset surface surrounds the positioning groove, the reset surface forms an inner edge adjacent to the inner periphery of the positioning groove, and the reset surface forms an outer edge away from the outer periphery of the positioning groove. The handle is provided with virtual and passing holes along its radial direction. The positioning groove has a datum plane, the inner edge forms a first height along the axial direction of the handle to the datum plane, and the outer edge forms a second height along the distance from the shank axial direction to the datum plane. The second height is greater than the first height. The driving rod can be pivotally inserted into the handle between the ready position and the escape position. One end of the driving rod is provided with a top, and the surface of the top is spherical. shape, when the driving rod is in the ready position, the top of the abutment is against the positioning groove, when the driving rod is in the trip position, the top of the abutment is separated from the positioning groove and abuts against the reset surface, and the torque wrench passes through The above structure can provide a stable escape effect.

However, the above are only preferred embodiments of the present invention, and should not be used to limit the scope of the present invention. Therefore, any changes in numerical values or replacement of equivalent elements, or equivalence according to the patent scope of the present invention, are mentioned. Changes and modifications should still fall within the scope of the patent of the present invention.

10:Torque wrench 20: handle 21: Escape seat 211: Positioning slot 212:Reset surface 213:Inside 214:Outside 30:Driving rod 31: reach the top 32: Accommodation tank 33: Escape piece 90:Spring D1: ball diameter D2:Aperture H1: first height H2: second height P: base plane

Figure 1 is a three-dimensional appearance view of the torque wrench with a stable trip mechanism according to the present invention. Figure 2 is a three-dimensional exploded view of the torque wrench with a stable trip mechanism according to the present invention. Figure 3 is an exploded perspective view of the torque wrench with a stable trip mechanism of the present invention from another perspective. Figure 4 is a cross-sectional structural view of the torque wrench driving rod with a stable trip mechanism in the ready position according to the present invention. Figure 5 is a cross-sectional structural view of the driving rod of the torque wrench with a stable tripping mechanism in the tripping position according to the present invention.

21: Escape seat

211: Positioning slot

212:Reset surface

213:Inside

214:Outside

31: reach the top

32: Accommodation tank

33: Escape piece

90:Spring

D1: ball diameter

D2:Aperture

H1: first height

H2: second height

P: base plane

Claims (5)

A torque wrench with a stable trip mechanism, which includes: A handle with only one escape seat inside. One end of the escape seat is provided with a positioning groove and a reset surface surrounding the positioning groove. The reset surface forms an inner edge adjacent to the inner periphery of the positioning groove. , the reset surface forms an outer edge away from the outer peripheral edge of the positioning groove, the handle is provided with a virtual reference plane along its radial direction and passes through the positioning groove, and the inner edge is formed along the distance from the axial direction of the handle to the reference plane A first height, the distance from the outer edge to the reference plane along the axial direction of the handle forms a second height, the second height being greater than the first height; A driving rod that can be pivotally inserted into the handle between the ready position and the escape position. One end of the driving rod is provided with a top, and the surface of the top is spherical. The driving When the lever is in the ready position, the top of the abutment abuts against the positioning groove. When the driving rod is in the tripping position, the top of the abutment breaks away from the positioning groove and abuts against the reset surface. The torque wrench with a stable trip mechanism as claimed in claim 1, wherein the distance from the reset surface to the reference plane along the axial direction of the handle gradually increases from a position adjacent to the inner edge to a position adjacent to the outer edge. The torque wrench with a stable trip mechanism as described in claim 2, wherein the reset surface is in the shape of a cone. The torque wrench with a stable tripping mechanism as described in claim 1, wherein the end of the driving rod where the top is set is provided with a receiving groove and a tripping piece, the tripping piece is a spherical body, and the tripping piece One side is disposed in the accommodating groove and the other side protrudes from the accommodating groove, and the butt top is disposed on the side of the jumper protruding from the accommodating groove. The torque wrench with a stable tripping mechanism as described in claim 4, wherein the diameter of the tripping piece forms a spherical diameter, the inner edge is circular, and the inner edge forms an aperture along the radial diameter of the handle, and the The hole diameter of the inner edge is smaller than the spherical diameter of the escape piece.