TWM568188U - Support type torque wrench - Google Patents

Abstract

The present invention provides a support type torque wrench, which comprises: a main rod body, an adjusting tube, a torque adjusting component, a connecting rod, a force transmitting device and a supporting member, wherein one end of the main rod body is provided with a driving portion and An accommodating space is disposed therein; one end of the adjusting tube is sleeved on the main rod body; the torsion adjusting component is disposed between the accommodating space and the inside of the adjusting tube, and the torsion adjusting component has an elastic member and a pushing member, and one end of the elastic member Abutting the pushing member; one end of the connecting rod is coupled to the driving portion; wherein the force transmitting device is disposed in the receiving space and connected between the connecting rod and the pushing member, and the supporting member is disposed on the outer periphery of the force transmitting device, and supports The piece is in contact with the inner circumference of the main rod body; thereby, the force transmitting device is prevented from being affected by the flexural stress through the support member to ensure the torque performance of the torque wrench.

Description

Support type torque wrench

This creation is about a torque wrench, especially a torque wrench that can prevent flexural stress and affect the performance of the torque.

At present, in the field of large-scale precision machines such as airplanes, ships and automated machinery, it is necessary to use a torque wrench for maintenance or assembly production; and the screw size and torque required for the above-mentioned large-scale machine are so large that it is commercially available for a long time. A large torque wrench from 1 meter to 2 meters can be used accordingly.

Referring to FIG. 1 and FIG. 2 , a partial cross-sectional view of a large torque wrench includes: a main rod body 1 having a driving head 2 at one end and a grip 3 at the other end of the main rod body 1; The main rod body 1 is internally provided with a connecting rod 4 and a supporting member 5, the connecting rod 4 is coupled between the driving head 2 and the holding member 5, and a torque adjusting mechanism 6 is disposed on the main rod body 1 And the grip 3, the torque adjustment mechanism 6 has a spring 7 and a push rod 8, and the push rod 8 is connected between the top holding member 5 and the spring 7; wherein the adjusting spring 7 is abutted against the push rod 8 through the rotating grip 3 The elastic force causes the push rod 8 to move relative to the axial direction of the main rod body 1, and the push rod 8 moves against the push rod holder 5 and the connecting rod 4 to adjust the torque value setting of the torque wrench, and then, The user can hold the grip 3 and pull the main body 1 to perform the locking operation through the driving head 2.

Furthermore, the length of the main rod body 1 accounts for more than one-half of the overall length of the large-distance torque wrench, and the long distance between the gripping head 3 and the driving head 2 of the fulcrum is transmitted through the biasing point, and the torque is generated by the torque principle; However, during the process of locking the main rod body 1 during the locking operation, the main rod body 1 is deflected by the external force of the pulling force, and the flexing position of the main rod body 1 mostly corresponds to the holding member 5, the main The flexural stress received by the rod body 1 directly acts on the holding member 5, so the holding member 5 is also affected by the stress, thereby affecting the torsion performance of the large torque wrench; therefore, the large torque wrench is used for a long time. Causes inaccurate torque.

In addition, when the main rod body 1 is subjected to the flexural stress, the inner circumference of the main rod body 1 will directly contact the holding member 5, and the inner circumference of the main rod body 1 will continue with the pulling operation of the locking operation. The friction of the top holding member 5 causes the inner peripheral edge of the main rod body 1 and the wearing member 5 to be worn and damaged, and also affects the torque performance of the large torque wrench.

In order to solve the above problems, the present invention provides a support type torque wrench, which prevents the force transmitting device from being affected by the flexural stress through the support member, and is beneficial for maintaining the torque performance.

An embodiment of the present invention provides a support type torque wrench, comprising: a main rod body having a driving end and a mounting end, the driving end is provided with a driving portion, and the driving portion is used for receiving the working piece, the main rod The body has an accommodating space; an adjusting tube has one end sleeved at the mounting end; a torque adjusting component is disposed between the accommodating space of the main rod body and the inside of the adjusting tube, and the torque adjusting component has an elastic part And a pushing member, one end of the elastic member abuts the pushing member; a connecting rod, one end of which is coupled to the driving portion; and a force transmitting device disposed in the receiving space and connected to the connecting rod and the pushing member a support member disposed on a periphery of the force transmitting device, the support member being in contact with the inner periphery of the main rod body.

By the above, the present invention is provided with a support member on the force transmitting device, and the support member is in contact with the inner circumference of the main rod body to prevent the force transmitting device from being directly affected by the stress of the main rod body; thereby, the conventional master can be improved The internal components of the rod are subjected to stress, which causes damage to the internal components, which causes problems in the performance of the torsion.

In one embodiment, the force transmitting device has a connecting member and a connecting rod, the connecting member is connected between the pushing member and the connecting rod, and the connecting rod is connected between the connecting rod and the driving portion, and the supporting member is divided into a first a support member and a second support member, the outer support edge of the connecting member is provided with a first support member, and the outer periphery of the connecting rod is provided with a second support member; thereby, when the main rod body is subjected to the flexural stress during the locking operation, The first support member and the second support member abut against the inner circumference of the main rod body, so that the stress of the main rod body can be dispersed to both sides to reduce the stress concentration, thereby improving the torque performance and the service life of the torque wrench.

In one embodiment, the outer edge of the first support member is recessed with a receiving groove, the receiving groove provides a resistance element, and the resistance element is in contact with the inner circumference of the main rod body; thereby, the first support is added The friction between the piece and the main rod body can effectively prevent the joint member from being affected by the external force to slide, thereby improving the stability of the joint member.

For the convenience of the description, the central idea expressed in the column of the above novel content is expressed by a specific embodiment. Various items in the embodiments are depicted in terms of ratios, dimensions, amounts of deformation, or displacements that are suitable for illustration, and are not drawn to the proportions of actual elements, as set forth above.

Referring to FIG. 3 to FIG. 7 , the present invention provides a support type torque wrench 100 , wherein FIG. 3 to FIG. 6 are schematic views of the first embodiment of the creation, and FIG. 7 is a schematic view of the second embodiment of the creation.

The support type torque wrench 100 includes:

A main body 10 has an accommodating space 11 extending in the axial direction; a driving end 12 and a mounting end 13 are respectively disposed at two ends of the main rod body 10, and the driving end 12 is provided with a driving portion 14 and a driving portion 14 is used to receive a work piece for performing a locking operation; in the present embodiment, the driving portion 14 is a ratchet sleeve joint type.

An adjusting tube 20 has one end sleeved on the mounting end 13 , wherein an adjusting device 30 is disposed between the adjusting tube 20 and the main rod body 10 , and the adjusting device 30 can be rotated at the locking position and the releasing position to control the adjusting tube Whether the rotation of the adjustment mechanism 30 can be relative to the main shaft 10 when the adjustment device 30 is in the locked position; when the adjustment device 30 is in the release position, the adjustment tube 20 can be rotated relative to the main shaft 10.

A torque adjustment component 40 is disposed between the accommodating space 11 of the main body 10 and the interior of the adjusting tube 20, and the torque adjusting component 40 has an elastic member 41, a pushing member 42 and an adjusting structure 43, and an elastic member The two ends of the 41 are abutted between the pushing member 42 and the adjusting structure 43 , and the adjusting structure 43 is coupled with the adjusting tube 20; when the adjusting device 30 is in the releasing position, the adjusting tube 20 is rotatable relative to the main rod 10 in the adjusting tube 20 At the same time of rotation, the adjusting structure 43 pushes against the elastic member 41 to move the pushing member 42 along the axial direction of the main rod body 10, and adjusts the elastic force of the elastic member 41 acting on the pushing member 42 to adjust the torque adjusting assembly 40. The pre-force acting on the driving portion 14 is used to adjust the torque value of the torque wrench 100.

A transmission rod 50 has one end connected to the driving portion 14, and the other end of the transmission rod 50 is recessed in the axial direction with an action groove 51.

A force transmitting device 60 is disposed in the accommodating space 11 and connected between the transfer rod 50 and the pushing member 42. The force transmitting device 60 has a connecting member 61 and a connecting rod 62. The connecting member 61 is connected between the pushing member 42 and the connecting rod 62. The connecting rod 50 is connected between the connecting rod 62 and the driving portion 14. The connecting rod 62 has a first end portion 621 and a second end portion 622 disposed oppositely, and a middle portion 623 connected between the first end portion 621 and the second end portion 622, and the first end portion 621 is connected The rods 50 are connected, and the second end portion 622 is connected to the engaging member 61. The outer diameter of the first end portion 621 is smaller than the outer diameter of the middle portion 623, and the outer diameter of the middle portion 623 is smaller than the outer diameter of the second end portion 622.

Furthermore, the first end portion 621 and the action groove 51 of the transfer rod 50 are fixedly coupled to each other by a first positioning member 63, and the first positioning member 63 is disposed perpendicular to the axial direction of the main rod body 10 by The first positioning member 63 increases the joint strength between the first end portion 621 and the transfer rod 50. In the first and second embodiments of the present invention, the first positioning member 63 is a positioning pin.

A support member 70 is disposed on the outer circumference of the force transmitting device 60 along the axial direction of the main rod body 10, and the support member 70 is in contact with the inner circumference of the main rod body 10. The support member 70 can be provided with a support member 70 on the outer periphery of the connecting member 61 and the connecting rod 62, or a supporting member 70 is disposed on the outer periphery of the connecting member 61 and the connecting rod 62. In the first embodiment of the present invention, The supporting member 70 is divided into a first supporting member 70a and a second supporting member 70b, the outer peripheral edge of the connecting member 61 is sleeved with a first supporting member 70a, and the outer peripheral portion of the connecting portion 62 of the connecting rod 62 is sleeved with a second supporting member 70b; In the second embodiment of the present invention, the outer edge of the connecting member 61 and the connecting rod 62 is provided with a supporting member 70. In other embodiments of the present invention, the supporting member 70 can also be disposed only on the engaging member 61 or the connecting rod 62. The outer periphery.

Furthermore, the support member 70 can be a closed or non-closed structure. In the first and second embodiments of the present invention, the support member 70 is a closed cylindrical structure, and the support member 70 is sleeved on the force transmitting device 60. The outer periphery.

In the first embodiment of the present invention, the second support member 70b is sleeved on the outer periphery of the middle portion 623, and the second support member 70b and the middle portion 623 are fixedly coupled to each other by a second positioning member 80. The member 80 is disposed perpendicular to the axial direction of the main rod body 10, and the connection strength between the middle portion 623 and the second support member 70b is increased by the second positioning member 80. In the first and second embodiments of the present invention, the second The positioning member 80 is a positioning pin.

In the first embodiment of the present invention, the outer edge of the first support member 70a is recessed with a receiving groove 71. The receiving groove 71 provides a resistance member 90, and the resistance member 90 is in contact with the inner periphery of the main body 10. The resistance element 90 can be an O-ring or a C-shaped buckle, and the resistance element 90 is used to increase the frictional resistance between the first support member 70a and the main body 10; in this embodiment, the number of the receiving slots 71 is two. The two receiving slots 71 are spaced apart, and each of the receiving slots 71 is provided with two resistance elements 90.

Furthermore, the inner circumference of the second support member 70b is stepped, and the second support member 70b has a first inner diameter 72 and a second inner diameter 73. The first inner diameter 72 is smaller than the second inner diameter 73. The diameter 72 is adjacent to the first end 621 and the second inner diameter 73 is adjacent to the second end 622.

Referring to FIG. 4 to FIG. 6 , when the torque wrench 100 is locked, the main body 10 is pulled according to the locking direction, and the main body 10 is deflected by the external force. The first support member 70a and the second support member 70b support the main rod body 10, and the stress received by the main rod body 10 is dispersed by the first support member 70a and the second support member 70b, thereby reducing stress concentration and avoiding direct stress. It is transmitted to the force transmitting device 60; thereby, the force transmitting device 60 can be effectively prevented from being affected by the flexural stress of the main rod 10, which is advantageous for maintaining the torque performance.

Moreover, in the process of the locking operation of the main rod body 10, when the torque of the torque wrench 100 is greater than the set torque value (that is, greater than the elastic force of the elastic member 41), the engaging member 61 will trip to issue Vibration and sound, to provide a warning to the user, to remind the user to stop the work.

Moreover, in the process of the locking operation of the main rod body 10, the connecting rod 62 is bent with the main rod body 10, and at this time, the second inner diameter 73 of the second supporting member 70b is matched with the middle portion 623. The outer diameter of the rod can provide a suitable bending movement space for the connecting rod 62; thereby, the pre-stress of the torque adjusting assembly 40 can be stably transmitted to the driving portion 14 to maintain the torque performance.

In addition, in the process of the locking operation of the main rod body 10, it is necessary to prevent the engagement member 61 from being affected by the external force, so that the pre-force provided by the torque adjustment assembly 40 can be accurately and stably transmitted through the connecting rod 62 and the transmission rod 50. To the driving portion 14; therefore, the resistance member 90 can effectively increase the frictional resistance between the first supporting member 70a and the main rod body 10, thereby improving the stability of the engaging member 61.

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.

<知知>

1‧‧‧ main body

5‧‧‧Top holding parts

2‧‧‧Drive head

6‧‧‧Torque adjustment mechanism

3‧‧‧ grip

7‧‧‧ Spring

4‧‧‧ Connecting rod

8‧‧‧Put

<this creation>

100‧‧‧torque wrench

61‧‧‧Connecting pieces

10‧‧‧ main body

62‧‧‧ Connecting rod

11‧‧‧ accommodating space

621‧‧‧First end

12‧‧‧Driver

622‧‧‧ second end

13‧‧‧Installation end

623‧‧ mid-section

14‧‧‧ Drive Department

63‧‧‧First positioning piece

20‧‧‧Adjustment tube

70‧‧‧Support

30‧‧‧Adjustment device

70a‧‧‧First support

40‧‧‧Torque adjustment components

70b‧‧‧second support

41‧‧‧Flexible parts

71‧‧‧ accommodating slots

42‧‧‧Pushing pieces

72‧‧‧First inner diameter

43‧‧‧Adjustment structure

73‧‧‧second inner diameter

50‧‧‧Transfer rod

80‧‧‧Second positioning parts

51‧‧‧ action slot

90‧‧‧Resistance element

60‧‧‧Power transmission device

Figure 1 is a partial cross-sectional view of a conventional large torque wrench. FIG. 2 is a schematic view showing the influence of a conventional large torque wrench on flexural stress. Figure 3 is a schematic view of the stereoscopic appearance of the present creation. Figure 4 is a partial cross-sectional view showing the first embodiment of the present creation. FIG. 5 is a schematic diagram of an embodiment of the present invention for operating a torque wrench. Fig. 6 is a schematic view showing the influence of the flexural stress of the torque wrench of the first embodiment of the present invention. Figure 7 is a partial cross-sectional view showing the second embodiment of the present creation.

Claims (10)

A supporting type torque wrench includes: a main rod body having an accommodating space therein, the main rod body having a driving end and a mounting end, wherein the driving end is provided with a driving portion for receiving a working piece; an adjusting tube having one end sleeved at the mounting end; a torque adjusting component disposed between the receiving space of the main rod body and the inside of the adjusting tube, the torsion adjusting component having an elastic member and a pushing member, one end of the elastic member abutting the pushing member; a connecting rod having one end coupled to the driving portion; a force transmitting device disposed in the receiving space and connected to the connecting rod And a support member disposed on a periphery of the force transmitting device, the support member being in contact with an inner circumference of the main rod body. The support type torque wrench of claim 1, wherein the force transmitting device has a connecting member and a connecting rod, the connecting member is connected between the pushing member and the connecting rod, and the connecting rod is connected to the connecting rod Between the rod and the driving portion, the supporting member is disposed on the outer periphery of the connecting member and the connecting rod. The support type torque wrench of claim 1, wherein the force transmitting device has a connecting member and a connecting rod, the connecting member is connected between the pushing member and the connecting rod, and the connecting rod is connected to the connecting rod The support member is divided into a first support member and a second support member. The first support member is disposed on the outer periphery of the connecting member, and the second support is disposed on the outer periphery of the connecting rod. Pieces. The support type torque wrench of claim 3, wherein the outer edge of the first support member is recessed with a receiving groove, the receiving groove provides a resistance element disposed inside the main body Peripheral contact. The support type torque wrench of claim 4, wherein the inner circumference of the second support member is stepped, and the second support member has a first inner diameter and a second inner diameter, the first inner diameter being smaller than The second inner diameter. The support type torque wrench of claim 5, wherein the connecting rod has a first end portion and a second end portion oppositely disposed, and a middle portion is coupled between the first end portion and the second end portion, The first end portion is coupled to the transfer rod, the second end portion is coupled to the engaging member, and the second support member is disposed at the middle portion. The support type torque wrench of claim 6, wherein a first positioning member is fixed between the connecting rod and the first end portion, and the first positioning member is disposed in an axial direction perpendicular to the main rod body. The support type torque wrench of claim 7, wherein one end of the transfer rod is recessed with an action groove, and the first end portion is fixed in the action groove by the first positioning member. The support type torque wrench of claim 6, wherein a second positioning member is disposed between the second support member and the middle portion, and the second positioning member is disposed perpendicular to the axial direction of the main rod body. The support type torque wrench of claim 6, wherein the outer diameter of the first end portion is smaller than the outer diameter of the middle portion, and the outer diameter of the middle portion is smaller than the outer diameter of the second end portion.