TWI790923B - 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's patent No. I701110, which is a torsion structure, which comprises: a first system is provided with a first container; a second system is provided with a second container, a A first wall surface, a second wall surface, a first pivot portion, and a first joint portion; an abutment member is provided with an accommodating groove; a first elastic member; a jump-off block; an adjustment group; a third This system is provided with a driving part, a pivot seat, a second pivot part, a first screw part and a top part; a first screw part is provided with a first abutment part, and the first abutment part The part protrudes slightly outside the first threaded part, and the first abutting part is aligned with the first wall surface. The deflection in the containing groove makes the first abutting portion abut against and knock on the first wall to make a prompt sound.

However, the escape block of the above-mentioned torsion structure is in the shape of a block. When the rotational torque reaches the set value, the third body 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 jumping block returns to the same position, resulting in an error in the torque value every time the jumping block is flipped, and it is impossible to jump and flip accurately at the torque setting value.

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

The main purpose of the present invention is to provide a torque wrench with a stable trip mechanism to provide a torque wrench including a handle bar and a driving rod. There is only one trip seat inside the handle bar, and one end of the trip 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 peripheral edge of the positioning groove, the reset surface forms an outer edge away from the outer peripheral edge of the positioning groove, and the handle bar is provided with a A datum plane that is imaginary and passes through the positioning groove, the inner edge forms a first height along the axial distance of the shank to the datum plane, and the outer edge forms a second height along the axial distance of the shank 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 jumping position, one end of the driving rod is provided with a top, and the surface of the top is It is in the shape of a spherical surface. When the drive rod is in the ready position, the abutment part abuts against the positioning groove. When the drive rod is in the escape position, the abutment part breaks away 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 from the reset surface to the reference plane along the axial direction of the shank gradually increases from a position adjacent to the inner edge to a position adjacent to the outer edge.

The reset surface is conical.

The driving rod is provided with an accommodating groove and an escape piece at one end of the abutment 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 accommodating groove, the abutting top is arranged on the side of the escape piece protruding from the accommodating groove.

The diameter of the escape piece forms a spherical diameter, the inner edge is circular, and the inner edge forms an aperture along the radial diameter of the shank, and the aperture diameter of the inner edge is smaller than the spherical diameter of the escape element.

Other objects, advantages and novelties of the present invention will be more apparent from the following detailed description and associated drawings.

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

Referring to Fig. 1 to Fig. 5, it is a three-dimensional appearance view, three-dimensional exploded view and cross-sectional structure view 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 bar 20 and a driving rod 30; wherein:

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

The driving rod 30 can be pivotally inserted into the handle rod 20 between the ready position and the tripping position, and 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 abutting portion 31 abuts against the positioning groove 211 , and when the driving rod 30 is in the escape position, the abutting portion 31 breaks away 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 stem 20 gradually increases from the position adjacent to the inner edge 213 to the position adjacent to the outer edge 214. The reset surface 212 can be conical or spherical. The reset surface 212 is in the shape of a conical surface in this embodiment.

The driving rod 30 is provided with an accommodating groove 32 and a tripping part 33 at one end of the abutting top 31, the tripping part 33 is a spherical body, and one side of the tripping part 33 is arranged in the accommodating groove 32 And the other side protrudes from the accommodating groove 32 , and the abutting portion 31 is disposed on the side of the escape member 33 protruding from the accommodating groove 32 .

The diameter of the jumper 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, and the aperture D2 of the inner edge 213 is smaller than the jumper. The spherical diameter D1 of the stripping piece 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 working object, if the torque borne by the driving rod 30 is less than the preset tripping torque, the driving The rod 30 is kept at the ready position. When the torsion force that the driving rod 30 bears 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 make the The abutting portion 31 breaks away from the positioning groove 211 to achieve the effect of jumping off. Utilizing the design that the surface of the abutting portion 31 is spherical, the cooperation between the abutting portion 31 and the positioning groove 211 will not produce a positional error, so that the torque wrench 10 can be preset at the drive rod 30 every time. The jumping action is completed when the torsion is released, and the reset surface 212 can be used to provide a reset effect. The abutting portion 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 times. to the ready position.

With regard to 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, wherein the torque wrench includes a handle bar and a driving rod, and only one tripping seat is provided in the handle bar, and one end of the tripping seat is provided with a positioning groove and Surrounding a reset surface of 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. A reference plane of the positioning groove, the inner edge forms a first height along the distance from the shaft axis of the handle to the reference plane, and the outer edge forms a second height along the distance from the shaft axis of the handle to the reference plane. The second height is greater than the first height, and the driving rod can be pivotally inserted into the handle between the ready position and the jumping position, and one end of the driving rod is provided with an abutting top, and the surface of the abutting top is spherical shape, when the driving rod is in the ready position, the abutting part abuts against the positioning groove, when the driving rod is in the escape position, the abutting part breaks away from the positioning groove and abuts against the reset surface, and the torque wrench passes through The above structure can provide a stable jumping effect.

However, the above is only a preferred embodiment of the present invention, and should not be used to limit the implementation scope of the present invention, so all changes in numerical values or replacement of equivalent elements, or equivalents made according to the patent scope of the present invention Changes and modifications should still fall within the category covered by the patent of the present invention.

10: Torque wrench 20: handle bar 21: Jump seat 211: positioning slot 212: reset surface 213: inner edge 214: Outside 30: drive rod 31: reach the top 32: storage tank 33: Jumping parts 90: spring D1: ball diameter D2: Aperture H1: first height H2: second height P: reference plane

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

21: Jump seat

211: positioning slot

212: reset surface

213: inner edge

214: Outside

31: reach the top

32: storage tank

33: Jumping parts

90: spring

D1: ball diameter

D2: Aperture

H1: first height

H2: second height

P: reference plane

Claims (5)

A torque wrench with a stable tripping mechanism, which includes: A shank, the shank is provided with only one escape seat, one end of the escape seat is provided with a positioning groove and a reset surface surrounding the positioning groove, and the reset surface is adjacent to the inner periphery of the positioning groove to form an inner edge , the reset surface is away from the outer peripheral edge of the positioning groove to form an outer edge, the stem is provided with a virtual datum plane passing through the positioning groove along its radial direction, and the inner edge is formed along the distance from the shaft axis of the handle to the datum plane a first height, the distance from the outer edge to the reference plane along the axis of the shank forms a second height, the second height is greater than the first height; A driving rod, the driving rod can be pivotally inserted into the handle between the ready position and the jumping position, one end of the driving rod is provided with a top, the surface of the top is spherical, the driving When the lever is at the ready position, the abutting portion abuts against the positioning groove, and when the driving rod is at the jumping position, the abutting portion breaks away from the positioning groove and abuts against the reset surface. The torque wrench with a stable tripping mechanism according to claim 1, wherein the distance from the reset surface to the reference plane along the shaft axis 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 tripping mechanism as described in claim 2, wherein the reset surface is conical. The torque wrench with a stable tripping mechanism as described in claim 1, wherein the end of the driving rod where the abutting 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 arranged in the accommodating groove and the other side protrudes from the accommodating groove, and the abutting part is arranged on the side protruding from the accommodating groove of the escape piece. The torque wrench with a stable escape mechanism as described in claim 4, wherein the diameter of the escape member forms a spherical diameter, the inner edge is circular, and the inner edge forms an aperture along the radial diameter of the handle rod, the The diameter of the inner hole is smaller than the diameter of the ball of the jumper.

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