TWI643714B - Torque wrench with cover - Google Patents

Abstract

The present invention provides a torque wrench having a cover, comprising: a tube body, a cover and a positioning member; the tube body is provided with a torque adjustment mechanism, and the torque adjustment mechanism is provided with an adjustment member, and the adjustment member is provided The head is exposed on one side wall of the tube; the cover is disposed on a side wall of the tube body and is displaceable along the longitudinal direction of the tube body, and can shield the head of the adjusting member; the positioning member is The cover can be positioned in a particular position such that the cover can positively shield the head of the adjustment member. The cover of the present invention is positioned at a specific position by the positioning member, so that the cover cannot be arbitrarily moved when the head of the adjusting member is shielded, and the adjusting member can be surely prevented from being accidentally touched, and the torque wrench is lifted. Practicality.

Description

Torque wrench with cover

The invention relates to a wrench, in particular, to a torque wrench having a cover.

Pressing, the torque wrench is a hand tool for disassembling the screwing component. The user adjusts the torque value of the torque wrench to adjust the locking degree of the screwing component, especially for special or important facilities or implements. When the screwing element is screwed, it needs more precise and proper locking degree, so that the facility or machine can meet the safety regulations and ensure safety in use. Therefore, the torque wrench is a must for the practitioners in the field. One of the hand tools.

The torque wrench of the prior art is widely used in the form of a mechanism for adjusting the torque. One of the conventional torque wrenches is provided with a knob on one side thereof, and the user can adjust the torque value set by the torque wrench by rotating the knob. Improve the convenience of the torque wrench to adjust the torque. However, since the knob is exposed on the outer surface of the torque wrench, the knob is easily rotated by the user's unintentional contact or colliding with other objects, and the torque value originally set by the torque wrench is changed, resulting in the torque wrench not being The screw is locked by the torque set by the user, thereby causing an error in the degree of locking of the screwing element, and reducing the practicability and reliability of the torque wrench.

In view of the above problems, a conventional torque wrench has been disclosed in which a torque wrench is provided with an outer cover. One end of the outer cover is pivotally connected to the outer peripheral surface of the torque wrench, and can be rotated at the center of the pivot joint, and the other end can be buckled. On the outer circumference of the wrench, the user can use the outer cover to fasten the wrench to shield the knob to avoid accidentally touching the knob. When the torque is to be adjusted, the outer cover is opened to reveal the knob.

However, the use of the above-described conventional structure to open the outer cover is inconvenient. Moreover, if the user does not securely fasten the outer cover, during the operation of the wrench, the outer cover is loosened and swings freely, which affects the operation. Moreover, the conventional structure is also difficult to manufacture and assemble.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a torque wrench having a cover that reliably prevents the adjustment knob from being accidentally touched.

Another object of the present invention is to provide a torque wrench having a cover that can positively shield the adjustment knob.

It is still another object of the present invention to provide a torque wrench having a cover that can be positioned at a particular position and that is not arbitrarily displaceable.

It is still another object of the present invention to provide a torque wrench having a cover that allows the cover to be stably displaced.

It is still another object of the present invention to provide a torque wrench having a cover that allows the cover to be easily assembled to a wrench.

The torque wrench with a cover provided by the present invention comprises: a tube body having: a through hole and a slot hole; the through hole is disposed in the tube body along a longitudinal direction of the tube body; The longitudinal direction of the pipe body is disposed on a side wall of the pipe body and communicates with the through hole; a working head is disposed at a front end of the pipe body; a tripping mechanism is located behind the working head, and the working head is a spring member is disposed in the through hole of the pipe body, and the front end thereof elastically holds the trip mechanism; a torque adjustment mechanism includes: an adjusting button having a head; the torque adjustment The mechanism is disposed in the through hole of the pipe body, the head of the adjusting button is exposed on one side wall of the pipe body; the adjusting button can drive the torque adjusting mechanism to adjust the elastic energy of the elastic member; The cover includes: a shielding portion and a locking portion; the shielding portion is disposed at a front end of the cover, and can cover the head of the adjusting button of the torque adjusting mechanism; the engaging portion is disposed on the protecting portion One side of the cover; the cover is disposed on one side wall of the tube body The snap-in portion is engaged in the slot of the tube body and is displaceable along the longitudinal direction of the tube body; a positioning member is disposed between the cover and the tube body, and the positioning member is Position the cover in a specific position. Preferably, a sidewall of the tube body is formed with a positioning hole; the positioning member further includes: an elastic member, wherein the positioning member is by the elastic member when the elastic member and the positioning hole are aligned with each other The spring force positions the cover in the particular position. Preferably, the positioning member further comprises: a positioning member elastically pushed by the elastic member, and when the elastic member and the positioning hole are aligned with each other, the positioning member is elastically pushed by the elastic member. The card is fastened in the positioning hole of the tube body. Preferably, the latching portion of the cover further comprises: a connecting portion and a latching portion; one end of the connecting portion is connected to one side of the cover; and one end of the engaging portion is connected to the connecting portion a free end; when the cover is mounted on the tube, the connecting portion is located in the slot, the engaging portion is engaged in the through hole; the longitudinal length of the engaging portion is greater than the The longitudinal length of the joint. In this way, the cover of the present invention can surely prevent the adjustment button from being accidentally touched. When the cover shields the head of the adjustment button, the positioning member positions the cover so that the cover cannot move arbitrarily. The user does not need to pay attention to whether the cover actually shields the adjusting button, and can concentrate on using the torque wrench to screw the screwing component to enhance the user's concentration. Secondly, since the longitudinal length of the engaging portion of the engaging portion of the cover is long, the cover can be stably displaced in the slot to improve the stability of the cover.

Please refer to the first, second, third and sixth figures. The torque wrench 10 with a cover provided by a preferred embodiment of the present invention can be used to facilitate the understanding of the technical contents of the present invention by the reviewing committee. The relative directions of the rear, left, right, top, and bottom are based on the direction of the first figure. The torque wrench 10 includes a tubular body 20, a working head 30, a tripping mechanism 50, an elastic member 60, a torque adjusting mechanism 70, a cover 80 and a positioning member 90, wherein:

The cross section of the tubular body 20 is rectangular in this embodiment, and has a longitudinal direction and a lateral direction. The longitudinal direction forms a direction of the two ends of the tubular body, and the transverse system is formed on both sides of the tubular body. The tube body comprises: a through hole 22, a through hole 24, a slot hole 26 and a consistent hole 28. The through hole 22 is a rectangular hole and extends through the front and rear ends of the tubular body 20 in the longitudinal direction of the tubular body 20. The through hole 24 extends through the two side walls of the tubular body 20 and communicates with the through hole 22 . The slot 26 is disposed in a longitudinal direction of the tubular body 20 on a side wall of the tubular body 20, behind the through hole 24, and communicates with the through hole 22. The through hole 28 also penetrates the two side walls of the pipe body 20 and communicates with the through hole 22; the through hole 28 is located between the through hole 24 and the slot hole 26.

The working head 30 includes a head 32 and a stem portion 36. The head 32 is where the working head 30 drives the workpiece. In this embodiment, a plug 33 is used to sleeve the sleeve to drive the screwing member (bolt or nut). The head may also be in other forms. For example, but not limited to, a polygonal sleeve hole to sleeve the threaded component. The rod portion 36 is disposed behind the head portion 32, and the front end thereof is pivotally connected to the rear end of the head portion 32 by a pivot 361 to rotate the head portion 32 at a pivotal position. The working head 30 is disposed at the front end of the tubular body 20, and the rod portion 36 penetrates into the through hole 22 of the tubular body 20, and is pivotally connected to the tubular body 20 by a shaft pin 38. It is exposed at the front end of the tube body 20.

The tripping mechanism 50 is disposed in the through hole 22 and located at the rear end of the rod portion 36 of the working head 30, and is elastically contacted to the rod portion 36 by the elastic action of the elastic member 60 described below. When the biasing force of the wrench exceeds the set torque, the tripping mechanism 50 generates a tripping action. The tripping mechanism 50 can be in different forms. This embodiment discloses a form of tripping mechanism, but is not limited thereto. The trip mechanism 50 includes a top member 52, an abutment member 54, and a roller 56. The abutting member 54 has a cylindrical shape and is disposed on one of the recesses 37 of the rod portion 36 and protrudes from the rear end of the rod portion 36. The roller 56 is pivotally connected to the front end of the top member 52 by a pivot 57 and slightly protruded from the front end of the top member 52. Therefore, in the normal state, the abutting member 54 abuts against one side of the roller 56; when the wrench reaches the set torque, the lever portion 36 of the working head 30 is laterally offset, so that the jump The detachment mechanism 50 generates a trip, and the abutment member 54 passes over the foremost end of the roller 56 and abuts against the other side of the roller 56. When the trip mechanism 50 is tripped, the user is alerted that the applied force of the wrench 10 has reached the set torque value.

The elastic member 60 is disposed in the through hole 22 of the tubular body 20 and is located behind the jumping mechanism 50, and the front end thereof is elastically supported at the rear end of the jumping mechanism 50. The elastic members applicable to the present invention may be in various forms, such as a conventional coil spring, and are not limited to the invention.

The torque adjustment mechanism 70 is disposed in the through hole 22 of the tubular body 20 and located behind the elastic member 60. The utility model comprises: an abutting member 71, an adjusting member 73, an adjusting button 75 and an outer cover. 76. The abutting member 71 has a rectangular cross section and cooperates with the shape of the tubular body 20 to have a first inclined surface 72 disposed on the rear end surface of the abutting member 71. The rear end of the elastic member 60 is flat and abuts against the front end surface of the abutting member 71. The adjusting member 73 has a rectangular cross section, and has a rectangular shape, and has a shape of the tubular body 20 and has a screw hole 731 and a second inclined surface 74. The screw hole 731 extends transversely through the adjusting member 73. The two inclined surfaces 74 are disposed on the front end surface of the adjusting member 73. The adjusting member 73 is located behind the abutting member 71, and the second inclined surface 74 is in contact with the first inclined surface 72 of the abutting member 71. The adjusting button 75 includes a head 751 and a shaft 752. One end of the shaft 752 is connected to the head 751 and is provided with a thread 7521. The adjusting button 75 is inserted through the hole of the tube body 20. In the 24, the head 751 is exposed to the side wall of the tubular body 20, and the shaft 752 is screwed to the screw hole 731 of the adjusting member 73 by the thread 7521. The outer cover 76 is disposed at the other end of the through hole 26.

Referring to the third and fourth figures, the cover 80 includes: a receiving hole 82, a shielding portion 85 and a locking portion 86. The receiving hole 82 is disposed on an inner side surface of the cover 80. The shielding portion 85 is a receiving space in the embodiment and is formed at the front end of the cover 80. The latching portion 86 is disposed on the inner side of the cover 80 and has a connecting portion 87, a latching portion 88 and a recess 89. The inner end of the connecting portion 87 is connected to the inner side surface of the cover 80. The longitudinal length of the engaging portion 88 is greater than the longitudinal length of the connecting portion 87, and the inner end of the engaging portion 88 is connected to the outer end of the connecting portion 87. The engaging portion 88 includes: a mitered surface 881 and two shoulder edges 882 . The two mitered faces 881 are respectively formed on two side faces of the engaging portion 88, and the width of the engaging portion 88 is gradually decreased toward the free end of the engaging portion. The shoulder 882 is formed on a step formed by the outer end of the connecting portion 87 and the inner end of the engaging portion 88. The groove 89 is disposed in the middle of the engaging portion 88 and is recessed inwardly and extends to the connecting portion 87.

Referring to FIG. 5 , the cover 80 is disposed on one side wall of the tubular body 20 . When the cover 80 is inserted into the tubular body 20 , the two of the engaging portions 88 of the engaging portion 86 are utilized. The mitral surface 881 extends into the slot 26 of the tubular body 20, and the two mitral surfaces 881 of the engaging portion 88 can be gradually extended into the slot 26 by the arrangement of the recess 89. The groove 89 is retracted, and the engaging portion 88 can smoothly pass through the slot 26 and penetrate into the through hole 22 of the tubular body 20. The shoulder 882 of the engaging portion 88 abuts the The inner wall surface of the tubular body 20 prevents the cover 80 from coming out of the slot 26, and the connecting portion 87 is located in the slot 26. The cover 80 is slidable along the slot 26 in the longitudinal direction of the tubular body 20 by the longitudinal direction of the latching portion 88. The structure in which the length is greater than the longitudinal length of the connecting portion 87 allows the cover 80 to be stably slid over the slot 26.

Referring to FIGS. 3 and 6 , the positioning member 90 includes a cross bar 92 , an elastic member 95 , and a positioning member 97 . One end of the crossbar 92 has a positioning hole 93 which is mounted on the through hole 28 of the tubular body 20 such that one end of the crossbar 92 and the positioning hole 93 are located on one side wall of the tubular body 20. The elastic member 95 is a spring and is disposed in the receiving hole 82 of the cover 80. In the present embodiment, the positioning member 97 is in the shape of a ball, and is received in the receiving hole 82. The elastic member 95 is elastically pushed up and elastically exposed to the receiving hole 82.

Referring to the sixth figure, when the user wants to adjust the set torque value of the torque wrench 10, the cover 80 is pushed backwards, so that the cover 80 is completely separated and the head 751 of the adjustment button 75 is not shielded. The user can rotate the adjustment button 75 to adjust the torque of the torque wrench 10. Rotating the adjusting button 75 can drive the adjusting member 73 to be displaced in the lateral direction of the tubular body 20. Through the cooperation of the first inclined surface 72 and the second 74, the adjusting member 73 interlocks the longitudinal displacement of the abutting member 71 in the tubular body 20. Thereby, the elastic member 60 is compressed or released. Thus, by changing the elastic energy of the elastic member 60, the set torque value of the wrench 10 can be adjusted.

Referring to FIG. 7 , when the user adjusts the torque wrench 10 to the torque to be set, the cover 80 is pushed forward, so that the shielding portion 85 covers the head 751 of the adjusting button 75 while The positioning member 97 is displaced to the positioning hole 93 of the crossbar 92, and is positioned in the positioning hole 93 of the crossbar 92 by the elastic thrust of the elastic member 95, so that the cover 80 has a positioning. Point, can not be arbitrarily displaced.

The cover 80 of the present invention is displaced in the longitudinal direction of the tube body in a sliding manner, thereby shielding or revealing the adjustment button, and is convenient to operate. When the cover shields the adjusting button, the positioning member is positioned to enable the user to arbitrarily displace the cover when the torque wrench screwing element is operated, and the adjusting button can be surely shielded. The effect of the accidental touch adjustment button is prevented, and since the positioning of the cover is true, the user does not need to pay attention to whether the cover actually shields the adjustment button, and the screwing component can be screwed intently to enhance the user's concentration. Secondly, the engaging portion 88 has a long longitudinal length and contacts the inner wall of the tubular body 20 with a large area, so that the protective cover 80 remains stable when the slot is slipped, and does not arbitrarily shake or even self. The slot is detached, so that the cover can be stably displaced in the slot to improve the stability of use of the cover. In addition, in the design of the present invention, the cover portion 86 can be easily attached to the slot 26, so that the cover 80 can be easily installed on the tubular body 20 of the wrench, and is not easily attached to the tubular body after installation. Separation.

The above-mentioned embodiments are merely illustrative of the invention and are not to be construed as limiting the scope of the invention.

10‧‧‧torque wrench

20‧‧‧ tube body

22‧‧‧through hole

24‧‧‧Perforation

26‧‧‧Slots

28‧‧‧through holes

30‧‧‧Work head

32‧‧‧ head

33‧‧‧ Insert

36‧‧‧ pole

361‧‧‧ pivot

37‧‧‧ recessed hole

38‧‧‧ axle pin

50‧‧‧Bounce mechanism

52‧‧‧Top fittings

53‧‧ ‧ room

54‧‧‧Resistance

56‧‧‧Roller

57‧‧‧ pivot

60‧‧‧Flexible parts

70‧‧‧Torque adjustment mechanism

71‧‧‧Receiving parts

72‧‧‧ first slope

73‧‧‧Adjustment

731‧‧‧ screw holes

74‧‧‧Second slope

75‧‧‧Adjustment button

751‧‧‧ head

752‧‧‧ shaft

7521‧‧ thread

76‧‧‧ Cover

80‧‧‧ Cover

82‧‧‧ accommodating holes

85‧‧‧Shielding site

86‧‧‧Clamping parts

87‧‧‧Connecting Department

88‧‧‧ card joint

881‧‧‧ oblique joint

882‧‧‧ shoulder

89‧‧‧ Groove

90‧‧‧ Positioning members

92‧‧‧cross bar

93‧‧‧Positioning holes

95‧‧‧Flexible components

97‧‧‧ Positioning parts

For a better understanding of the objects, features and advantages of the present invention, the present invention will be described in detail with reference to the accompanying drawings. A perspective view of a torque wrench provided by the example. The second figure is a perspective view of the other direction of the torque wrench of the first figure. The third figure is the majority of the solution of the torque wrench of the first figure. The fourth figure is a perspective view of the cover of the third figure. Figure 5 is a cross-sectional view taken along line 5-5 of the first figure. The sixth figure is a longitudinal sectional view of the torque wrench of the first figure, and shows that the cover is displaced toward one end of the pipe body and leaves the adjusting button. The seventh figure is a longitudinal sectional view of the torque wrench of the first figure, and shows that the cover is positioned at an positioning point, covering the adjustment button.

Claims (10)

A torque wrench with a cover, comprising: a tube body formed with a longitudinal direction, having: a through hole and a slot hole; the through hole is disposed in the tube body along a longitudinal direction of the tube body; the slot hole system a longitudinal direction of the tubular body is disposed on a side wall of the tubular body and communicates with the through hole; a working head is disposed at a front end of the tubular body; a tripping mechanism is located behind the working head, and the tripping mechanism is The working head can generate a tripping action; an elastic member is disposed in the through hole of the pipe body, and the front end thereof applies an elastic force to the jumping mechanism; and a torque adjusting mechanism includes: an adjusting button having a head The torque adjustment mechanism is disposed in the through hole of the pipe body, the head of the adjusting button is exposed on one side wall of the pipe body; the adjusting button can drive the torque adjusting mechanism to change the elastic member Elastic energy; a cover comprising: a shielding portion and a locking portion; the shielding portion is disposed at one end of the protective cover and shielding the head of the adjusting button of the torque adjusting mechanism; the engaging portion is Provided on one side of the cover; the cover is disposed on the side One side wall of the body is engaged with the slot of the tube body by the engaging portion and can be displaced along the longitudinal direction of the tube body; a positioning member is disposed between the cover and the tube body The positioning member positions the cover in a specific position. The torque wrench with a cover according to claim 1, wherein: one side wall of the tube body is formed with a positioning hole; the positioning member further comprises: an elastic element, when the elastic element and the positioning hole are aligned with each other The positioning member positions the cover at the positioning hole by the elastic force of the elastic member. The torque wrench with a cover according to claim 2, wherein the positioning member further comprises: a positioning member elastically pushed by the elastic member, and the positioning is when the elastic member and the positioning hole are aligned with each other; The piece is affixed to the positioning hole of the tube body by the elastic ejector of the elastic element. The torque wrench of claim 3, wherein the cover further comprises: a receiving hole disposed on one side of the cover; the elastic element and the positioning member are respectively disposed on the cover In the receiving hole, the positioning member is held by one of the sides of the cover by the elastic holding of the elastic member. A torque wrench with a cover according to any one of claims 2 to 4, wherein the positioning member further comprises: a crossbar mounted on the tubular body, one end of which is located at a side wall of the tubular body; The positioning hole is formed at one end of the cross bar. The torsion wrench with a cover according to any one of claims 1 to 4, wherein the engaging portion of the cover further comprises: a connecting portion and a latching portion; one end of the connecting portion is connected to the One side of the cover; one end of the engaging portion is connected to the free end of the connecting portion; when the cover is mounted on the tube, the connecting portion is located in the slot, and the engaging portion is fastened Connected to the through hole. A torque wrench having a cover according to claim 6, wherein the longitudinal length of the engaging portion is greater than the longitudinal length of the connecting portion. The torque wrench with a cover according to claim 6, wherein the engaging portion further has: two mitered faces formed on two sides of the engaging portion, and the width of the engaging portion is The free end of the snap portion is gradually reduced. The torque wrench with a cover according to claim 6, wherein the engaging portion further has: a shoulder edge formed at a joint of the engaging portion and the connecting portion, wherein the shoulder edges are engaged The inner wall surface of the pipe body. The torque wrench of claim 6 , wherein the engaging portion of the cover further comprises: a groove disposed at a free end of the engaging portion and recessed inwardly and extending to The connection.