CN117817604A - Torque wrench with stable tripping mechanism - Google Patents

Abstract

The present invention relates to a torque wrench with a stable tripping mechanism, comprising a handle rod and a driving rod, wherein only one tripping seat is arranged 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 can be pivotally inserted into the handle rod between a preparation position and a tripping position, one end of the driving rod is provided with an abutting top portion, the surface of the abutting top portion is spherical, when the driving rod is in the preparation position, the abutting top portion abuts against the positioning groove, and when the driving rod is in the tripping position, the abutting top portion is separated from the positioning groove and abuts against the reset surface, and the torque wrench can provide a stable tripping effect through the above structure.

Description

Torque wrench with stable tripping mechanism

Technical Field

The invention relates to a torque wrench, in particular to a torque wrench with a stable tripping mechanism.

Background technique

Please refer to the "Torsion Structure" patent case of Taiwan Patent No. I701110, which is a torsion structure, which includes: a first body with a first receiving groove; a second body with a second receiving groove, a first wall, a second wall, a first pivot and a first connecting portion; a push-up member with a receiving groove; a first elastic member; a jump block; an adjustment group; a third body with a driving portion, a pivot seat, a second pivot, a first screw-fitting portion and a push-up portion; a first screw-fitting member with a first abutting portion, the first abutting portion is slightly protruding from the first screw-fitting portion, the first abutting portion is aligned with the first wall, when it is rotated clockwise and the rotation torque reaches a set value, the third body deflects in the second receiving groove, so that the first abutting portion abuts and knocks against the first wall to emit a prompt sound.

However, the trip block of the torque structure is in the shape of a square. When the rotational torque reaches a set value, the third body must be turned over in conjunction with the trip block to cause it to swing and hit the first wall. After the torque is released, the trip block cannot return to the same position due to the friction force, resulting in an error in the torque value each time the trip block turns over, and it is impossible to accurately trip and turn over at the torque set value.

Summary of the invention

The main purpose of the present invention is to provide a torque wrench with a stable tripping mechanism.

The invention provides a torque wrench with a stable tripping mechanism, comprising a handle rod and a driving rod, wherein only one tripping seat is arranged 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 reset surface is adjacent to the inner peripheral edge of the positioning groove to form an inner edge, and the reset surface is away from the outer peripheral edge of the positioning groove to form an outer edge, the handle rod is provided with a virtual reference surface passing through the positioning groove along its radial direction, the inner edge forms a first height along the axial direction of the handle rod to the reference surface, the outer edge forms a second height along the axial direction of the handle rod to the reference surface, the second height is greater than the first height, the driving rod can be pivotally inserted in the handle rod between a preparation position and a tripping position, one end of the driving rod is provided with a butt top portion, the surface of the butt top portion is spherical, when the driving rod is in the preparation position, the butt top portion abuts against the positioning groove, and when the driving rod is in the tripping position, the butt top portion is separated from the positioning groove and abuts against the reset surface, and the torque wrench can provide a stable tripping effect through the above structure.

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

The reset surface is in the shape of a conical surface.

The driving rod is provided with a receiving groove and a jump piece at one end of the abutting top. The jump piece is a sphere. One side of the jump piece is arranged in the receiving groove and the other side protrudes from the receiving groove. The abutting top is arranged on the side of the jump piece protruding from the receiving groove.

The diameter of the jump-out member forms a ball diameter, the inner edge is circular, and the inner edge forms an aperture along the radial diameter of the handle rod, and the aperture of the inner edge is smaller than the ball diameter of the jump-out member.

The torque wrench of the present invention can provide a stable tripping effect through the above structure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a three-dimensional appearance diagram of a torque wrench with a stable tripping mechanism according to the present invention.

FIG. 2 is a perspective exploded view of a torque wrench with a stable tripping mechanism according to the present invention.

FIG. 3 is a three-dimensional exploded view of the torque wrench with a stable tripping mechanism of the present invention from another perspective.

FIG. 4 is a cross-sectional structural diagram of the torque wrench drive rod with a stable tripping mechanism in the preparation position according to the present invention.

FIG5 is a cross-sectional structural diagram of the torque wrench drive rod with a stable tripping mechanism in the tripping position of the present invention.

Explanation of reference numerals: 10 torque wrench; 20 handle; 21 trip seat; 211 positioning groove; 212 reset surface; 213 inner edge; 214 outer edge; 30 driving rod; 31 abutment top; 32 accommodating groove; 33 trip member; 90 spring; D1 ball diameter; D2 aperture; H1 first height; H2 second height; P reference plane.

Detailed ways

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

There is only one escape seat 21 in the handle rod 20, and 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 periphery of the positioning groove 211 to form an inner edge 213, and the reset surface 212 is away from the outer periphery of the positioning groove 211 to form an outer edge 214, the handle rod 20 is provided with a virtual reference plane P along its radial direction and passing through the positioning groove 211, the inner edge 213 along the axial direction of the handle rod 20 to the reference plane P forms a first height H1, the outer edge 214 along the axial direction of the handle rod 20 to the reference plane P forms a second height H2, and the second height H2 is greater than the first height H1.

The driving rod 30 can be pivotally connected to the handle rod 20 between a preparation position and a tripping position. A butt-jointing portion 31 is provided at one end of the driving rod 30. The surface of the butt-jointing portion 31 is spherical. When the driving rod 30 is in the preparation position, the butt-jointing portion 31 abuts against the positioning groove 211. When the driving rod 30 is in the tripping position, the butt-jointing portion 31 is disengaged from the positioning groove 211 and abuts against the reset surface 212.

The distance from the reset surface 212 to the reference plane P along the axial direction of the handle rod 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 conical surface or a spherical concave arc surface. In the present embodiment, the reset surface 212 is in the shape of a conical surface.

The driving rod 30 is provided with a receiving groove 32 and a jump member 33 at one end of the abutting top portion 31. The jump member 33 is a sphere. One side of the jump member 33 is provided in the receiving groove 32 and the other side protrudes from the receiving groove 32. The abutting top portion 31 is provided on the side of the jump member 33 protruding from the receiving groove 32.

The diameter of the tripping member 33 forms a ball diameter D1 , the inner edge 213 is circular, and the inner edge 213 forms an aperture D2 along the radial diameter of the handle 20 . The aperture D2 of the inner edge 213 is smaller than the ball diameter D1 of the tripping member 33 .

The torque wrench 10 can provide a stable tripping effect through the above structure. The tripping seat 21 is pushed by the spring 90 and pushes the abutting top 31 with a preset thrust. When the driving rod 30 turns the workpiece, if the torque borne by the driving rod 30 is less than the preset tripping torque, the driving rod 30 remains in the preparatory position. When the torque borne 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, and at the same time, the abutting top 31 is separated from the positioning groove 211, thereby achieving a tripping effect. By utilizing the spherical surface design of the abutting top portion 31, the cooperation between the abutting top portion 31 and the positioning groove 211 will not cause positional errors, so that the torque wrench 10 can complete the tripping action every time the driving rod 30 is subjected to the default tripping torque, and the reset surface 212 can provide a reset effect. The abutting top portion 31 can roll or slide on the reset surface 212, and cooperate with the thrust of the spring 90 to return the driving rod 30 to the ready position.

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

The invention provides a torque wrench with a stable tripping mechanism, wherein the torque wrench comprises a handle rod and a driving rod, wherein only one tripping seat is arranged 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 reset surface is adjacent to the inner peripheral edge of the positioning groove to form an inner edge, and the reset surface is away from the outer peripheral edge of the positioning groove to form an outer edge, the handle rod is provided with a virtual reference surface passing through the positioning groove along its radial direction, the inner edge forms a first height along the axial direction of the handle rod to the reference surface, the outer edge forms a second height along the axial direction of the handle rod to the reference surface, and the second height is greater than the first height, the driving rod can be pivotally inserted in the handle rod between a preparation position and a tripping position, one end of the driving rod is provided with a butt top portion, the surface of the butt top portion is spherical, when the driving rod is in the preparation position, the butt top portion abuts against the positioning groove, and when the driving rod is in the tripping position, the butt top portion is separated from the positioning groove and abuts against the reset surface, and the torque wrench can provide a stable tripping effect through the above structure.

Claims (5)

1. The utility model provides a torque wrench with stable tripping device which characterized in that, it includes:

the handle is internally provided with only one trip seat, one end of the trip seat is provided with a positioning groove and a reset surface surrounding the positioning groove, the reset surface is adjacent to the inner periphery of the positioning groove to form an inner edge, the reset surface is far away from the outer periphery of the positioning groove to form an outer edge, the handle is radially provided with a virtual datum surface passing through the positioning groove, the distance from the inner edge of the handle to the datum surface forms a first height, the distance from the outer edge of the handle to the datum surface forms a second height, and the second height is larger than the first height;

the driving rod can be pivotally inserted into the handle rod between a preparation position and a tripping position, one end of the driving rod is provided with a propping part, the surface of the propping part is spherical, the propping part is propped against the positioning groove when the driving rod is in the preparation position, and the propping part is separated from the positioning groove and propped against the reset surface when the driving rod is in the tripping position.

2. The torque wrench with stable trip mechanism of claim 1, wherein: the distance from the reset surface to the reference surface along the axial direction of the handle rod gradually increases from the position adjacent to the inner edge to the position adjacent to the outer edge.

3. The torque wrench with stable trip mechanism of claim 2, wherein: the reset surface is conical.

4. The torque wrench with stable trip mechanism of claim 1, wherein: one end of the driving rod, which is provided with the propping part, is provided with a containing groove and a tripping part, the tripping part is a sphere, one side of the tripping part is arranged in the containing groove, the other side of the tripping part protrudes out of the containing groove, and the propping part is arranged on one side of the tripping part protruding out of the containing groove.

5. The torque wrench with stable trip mechanism of claim 4, wherein: the diameter of the trip member forms a sphere diameter, the inner edge is circular, the diameter of the inner edge along the radial direction of the handle rod forms an aperture, and the aperture of the inner edge is smaller than the sphere diameter of the trip member.