TWI395641B - Torque wrench - Google Patents

Description

Torque wrench

The present invention relates to a torsion wrench, and more particularly to a torsion wrench that can control the value of the torque output.

In general, traditionally used torsion wrenches in various fields such as processing and medical treatment generally rely on the user's own feel and experience to determine whether the torque value at the time of lock is insufficient or exceeded, which lacks the disadvantage of controlling the torque. , which leads to many inconveniences in use.

In view of the above, in order to overcome the shortcomings caused by the above-mentioned conventional torsion wrench, please refer to FIG. 1 and the "Analog Dental Wrench" patent of US Pat. No. 6,162,053, which discloses a method for controlling the output torque value. Know the torsion wrench 9. The conventional torsion wrench 9 is mainly used to control the torque value of the implant lock in the dental implant surgery, and comprises a hollow grip 91, a hollow cylinder 92, an adjusting component 93 and an adaptor 94. The hollow grip 91 has a chamber 911, and an extension 912 is disposed in the chamber 911. One end of the hollow cylinder 92 is disposed in the chamber 911, and the hollow cylinder 92 has a chamber 921 in which the extension 912 is located. The adjusting component 93 is disposed in the chamber 921, and the adjusting component 93 includes a linear spring 931, a pushing member 932 and a ball 933. One end of the linear spring 931 is sleeved on the extending member 912, and the other end is The pushing member 932 and the ball 933 are provided in this order. The adapter 94 is pivotally disposed at the other end of the hollow cylinder 92 by a pivoting portion 941, and the adapter 94 is provided with a recessed surface 942. The recessed surface 942 and the pushing member 932 are sandwiched together. The sphere 933.

According to the above-mentioned design, the torque wrench 9 is mainly designed to compress the linear spring 931 to apply a fixed-size spring force to the pusher 932, thereby controlling the hollow grip 91 to drive the output of the adapter 94. The torque value; once the output torque value exceeds the load of the spring force, the hollow cylinder 92 will pivotally pivot with the pivoting portion 941, and the ball 933 then slides away from the The concave surface 942 causes the conventional torsion wrench 9 to assume a state in which the torque cannot be output.

However, since the linear spring 931 is in a compressed state for a long period of time, it is easy to cause elastic fatigue and it is not easy to accurately control the torque value output, thereby shortening the service life of the conventional torsion wrench 9 . Moreover, since the hollow grip 91 and the hollow cylinder 92 must be additionally processed, the appropriately sized chamber 911 and the chamber 921 can be respectively formed to accommodate related components, thereby causing a relatively expensive manufacturing cost. On the other hand, under long-term use, it is often necessary to periodically clean and replace the internal components in order to avoid contamination and bacteria in the chamber 911 and the chamber 921, but since the conventional torsion wrench has The number of components is so large that the disassembly and assembly steps are cumbersome and time consuming, causing inconvenience in use.

In summary, the above-mentioned conventional torsion wrench 9 still has many shortcomings such as short service life, high manufacturing cost, and inconvenient use, and therefore it is still necessary to be improved.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the above disadvantages to provide a torsion wrench for controlling the torque value by magnetic attraction to extend the service life of the torsion wrench.

Another object of the present invention is to provide a torsion wrench having a simple structure for easy production and reduced manufacturing cost.

It is yet another object of the present invention to provide a component-simplified torsion wrench for ease of disassembly and assembly.

Still another object of the present invention is to provide a torsion wrench that is coupled to the engaging structure by magnetic attraction to accurately control the torque value outputted.

In order to achieve the foregoing object, the technical content of the present invention includes:

A torsion wrench comprising: a connecting member having a first surface, an engaging portion and a first magnetic attracting portion, wherein the first magnetic attracting portion is disposed on the first surface; and a pivoting grip having a second surface and a second magnetic portion, the second surface is aligned toward the first surface, and the second magnetic portion is disposed on the second surface and is attracted to the first magnetic portion; And at least one pivoting member for pivotally disposing the pivoting handle on the connecting member.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

Referring to Figures 2 and 3, the torsion panel of the first embodiment of the present invention comprises a connecting member 1 and a pivoting grip 2, and may further comprise at least one pivoting member 3, the pivoting grip 2 is pivotally disposed on the connecting member 1 via the pivoting member 3.

The connector 1 has a first surface 11 , an engaging portion 12 and a first magnetic portion 13 . The first surface 11 can be any surface that can be pivoted by the pivoting handle 2; in the present embodiment, the first surface 11 is revealed to be a concave curved surface having a suitable curvature. The engaging portion 12 can form a positioning groove for the processing instrument or form an engaging groove conforming to the cap of the various screw members (for example, a cap of a hexagonal screw); in this embodiment, the connection portion 12 is selected for selection. In order to engage the groove, the embodiment can be directly sleeved on a specific screw to drive the screw to rotate. The first magnetic attraction portion 13 is disposed on the first surface 11 , and the first magnetic attraction portion 13 can be any other magnetic attraction portion 22 that can be associated with the pivoting handle 2 [described in detail] In the present embodiment, the first magnetic attraction portion 13 is selected as a magnetic material, and preferably is made of a stainless steel material, so that the first magnetic attraction portion 13 is not easily oxidized and rusted. The magnetic material of this embodiment can be magnetized by different energies, and the magnetic material can control its different magnetic properties.

The pivoting handle 2 has a second surface 21 and a second magnetic portion 22 . The second surface 21 is aligned toward the first surface 11 of the connecting member 1 and can be any surface capable of pivoting the pivoting handle 2 relative to the connecting member 1; in this embodiment, it is revealed The second surface 21 is a convex arc surface, and the curvature of the circular surface corresponds to the curvature of the concave curved surface formed by the first surface 11. The second magnetic attraction portion 22 is disposed on the second surface 21, and the second magnetic attraction portion 22 can be any material capable of attracting the first magnetic attraction portion 13, such as iron or magnet; In the example, the second magnetic attraction portion 22 is preferably selected as a magnetic material, and the pivoting grip 2 having the second magnetic attraction portion 22 is further formed by injection molding. The magnetic material of this embodiment may also selectively magnetize the stainless steel material so that the second magnetic attraction portion 22 is less susceptible to oxidative rust.

The pivoting member 3 has a pivoting portion 31 and a fixed end 32. The pivoting portion 31 is mainly used as a pivot of the pivoting handle 2, and the fixed end 32 is used to ensure the pivoting. The handle 2 is pivotally movable relative to the connecting member 1; in this embodiment, the connecting member 1 and the pivoting grip 2 are connected by two pivoting members 3 so that the pivoting grip 2 can The two pivoting portions 31 are pivots and are pivotally operated relative to the connecting member 1. Moreover, in the embodiment, the first surface 11 of the connecting member 1 is selectively attached to the second surface 21 of the pivoting handle 2, and the first magnetic portion 13 and the second magnetic portion 22 are attached to each other. Also attached to each other in order to enhance the magnetic attraction between the two, and to avoid affecting the pivoting of the pivoting grip 2; however, the invention is not limited thereby, when the pivoting grip 2 passes through the two pivots When the connector 3 is disposed on the connector 1, a suitable gap may be left between the first and second surfaces 11, 21.

In addition, the pivoting portion 31 of the present embodiment is selectively disposed on the pivoting handle 2 corresponding to the arcuate direction of the first and second surfaces 11, 21, and the fixed end 32 is selectively disposed on the connecting member 1. In other words, when the first surface 11 is selected as a convex arc surface and the second surface 21 is selected as a concave curved surface of the same curvature, the pivoting portion 31 is correspondingly disposed on the connecting member 1 and the fixed end 32 is correspondingly disposed on the pivoting handle 2 to ensure that the pivoting handle 2 can be pivoted relative to the connecting member 1, the detailed principle of which is understood by those skilled in the art.

Referring to FIGS. 2 and 3, it is disclosed that the torque wrench of the first embodiment of the present invention is pre-assembled with the connecting member 1 having the engaging portion 12 and the first magnetic portion 13 respectively. After the pivoting grip 2 of the second magnetic attraction portion 22 is provided, the pivoting grip 2 can be disposed on the connecting member 1 by the two pivoting members 3. On the contrary, when the two pivoting members 3 are removed, the connecting member 1 and the pivoting grip 2 can be conveniently cleaned and maintained.

Referring to FIGS. 4 and 5, it is disclosed that the torque wrench of the first embodiment of the present invention is used in the actual use, and the alignment portion 12 is pre-positioned on the cap of the specific screw, and the first The magnetic force attracting the magnetic attraction portion 13 and the second magnetic attraction portion 22 causes the pivoting handle 2 to interlock the rotation of the screw member to output the torque to lock the screw to a specific position. Referring to FIG. 5, once the torque value outputted is greater than the magnetic force between the first magnetic attraction portion 13 and the second magnetic attraction portion 22, the pivoting handle 2 will be the two pivoting portions. 31 is a pivoting movement of the pivot member relative to the connecting member 1, so that the torsion wrench is bent to exhibit a state in which the torque cannot be output, that is, the torque value outputted at this time has reached the upper limit.

In addition, when one of the first magnetic attraction portion 13 and the second magnetic attraction portion 22 is made of a magnetic material, the other of the first magnetic attraction portion 13 and the second magnetic attraction portion 22 is When a magnetic material is made of a material that attracts each other, a predetermined magnetic force between the first magnetic portion 13 and the second magnetic portion 22 corresponds to a predetermined torque of the pivoting handle 2 to interlock the connecting member 1. Therefore, for different gauge torsion wrenches, different magnetic forces between the first magnetic attraction portion 13 and the second magnetic attraction portion 22 correspond to the pivoting handle as the magnetic material has different magnetic properties. 2 interlocking the different torques of the connector 1.

The main technical feature of the torsion wrench of the present invention is that the torque of the first magnetic attraction portion 13 and the second magnetic attraction portion 22 are mutually controlled to relatively control the torsion wrench. The upper limit of the torque value that can be output, the invention can effectively avoid the disadvantage that the linear spring is easy to be elastically fatigued and shorten the service life; therefore, the first magnetic attraction portion 13 and the second magnetic attraction portion 22 of the present invention are still used for a long time. A good magnetic attraction can be maintained, so that the invention has the effect of achieving an extended service life.

The torsion wrench of the present invention can be utilized because it only needs to separately process the connecting member 1 having the engaging portion 12 and the first magnetic attraction portion 13 and the pivoting grip 2 having the second magnetic attraction portion 22 The pivoting member 3 connects the connecting member 1 and the pivoting grip 2, thereby forming a torsion wrench capable of accurately controlling the output torque value; therefore, the torsion wrench of the present invention can effectively simplify the structural complexity and is easy to produce. The invention has the effect of achieving a reduction in manufacturing cost.

The torsion wrench of the present invention is relatively simple and convenient in the assembly and disassembly process due to the simplification of the overall components; therefore, the torsion wrench of the present invention can be conveniently cleaned and maintained, so that the invention can save time and improve disassembly and assembly. The effect of convenience.

Referring to Figures 6 and 7, the torsion wrench of the second embodiment of the present invention is disclosed. Compared with the first embodiment, the second embodiment selects the processing tool as an embodiment. The torsion wrench includes a pivoting member 3, a connecting member 4, a pivoting grip 5 and a ratchet assembly 6. The pivoting handle 5 is also pivotally disposed on the connecting member 4 via the pivoting member 3 , and the ratchet assembly 6 is disposed on the connecting member 1 . The pivoting member 3 is the same as the structural features disclosed in the foregoing first embodiment, and details are not described herein.

The connecting member 4 is provided with a first surface 41 , an engaging portion 42 and an adsorbing member 43 . Compared with the foregoing first embodiment, the engaging portion 42 is selected as a positioning groove provided for the ratchet assembly 6, and the positioning groove is further communicated with the first surface 41 via an assembly groove 44. The absorbing member 43 is disposed in the assembly groove 44, and the absorbing member 43 is disposed opposite to one end of the pivoting handle 5 to provide a first magnetic attraction portion 431, and the absorbing member 43 faces away from the pivoting handle. One end of the fifth end is combined with an elastic member 432; wherein, in comparison with the first magnetic attraction portion 13 of the first embodiment, the first magnetic attraction portion 431 of the present embodiment is further selectively formed to have a concave surface with respect to the first surface 41. The structure of the entry is explained as an implementation.

The pivoting handle 5 has a second surface 51 and a second magnetic portion 52. The second surface 51 and the second magnetic portion 52 are combined with the second surface 21 and the second magnetic portion of the first embodiment. 22 is substantially the same; compared to the first embodiment, the second magnetic attraction portion 52 of the present embodiment is further selected to form a structure having a protrusion relative to the second surface 51 as an embodiment. Thereby, the protruding second magnetic portion 52 can be engaged into the concave first magnetic portion 431 to increase the attraction between the first and second magnetic portions 431 and 52. effect. Moreover, when the first magnetic attraction portion 431 selectively forms a structure protruding from the first surface 41, the second magnetic attraction portion 52 correspondingly selects a structure recessed relative to the second surface 51.

Furthermore, a positioning portion 411 may be further disposed between the first surface 41 and the second surface 51 for engaging and positioning the protruding first magnetic portion 431 or the protruding second magnetic portion 52; In this embodiment, the positioning portion 411 is selected to be formed on the two positioning holes of the first surface 41, and the two positioning holes are respectively located on opposite sides of the adsorption member 43. Thereby, once the pivoting handle 5 is pivoted relative to the connecting member 4, the second magnetic attraction portion 52 can extend into one of the positioning holes.

The ratchet assembly 6 includes a ratchet 61 and a latch 62. The outer wall surface of the ratchet 61 is provided with at least one tooth groove 611, and the ratchet wheel 61 is rotatably disposed at the engaging portion 42 of the connecting member 4, and can be combined with a specific type of tool according to the needs of use. The latching member 62 is disposed in the assembly groove 44 of the connecting member 4, and one end of the latching member 62 can be engaged into the slot 611 of the ratchet 61, and the other end is selectively coupled with the elastic member 432. . The design of the latching member 62 can drive the ratchet 61 to rotate the output torque in a specific direction, and the reverse direction of the specific direction can not drive the ratchet 61 to rotate the output torque. The detailed structure and the operating principle are Those who are familiar with the art can understand that this is not to be repeated.

Referring to FIGS. 6 and 7 again, in the actual assembly of the torsion wrench of the second embodiment of the present invention, the ratchet 61 can be disposed in the engaging portion 42 in advance, and then the card member is sequentially disposed. 62. The elastic member 432 and the adsorbing member 43 are inserted into the assembly groove 44 from the first surface 41, and finally the pivoting handle 5 is disposed on the connecting member 4 by the two pivoting members 3. On the contrary, when disassembling, it is only necessary to reverse the operation in the same manner as described above, thereby facilitating cleaning and replacement of related components. Moreover, the order of assembly and disassembly of the ratchet 61 is not limited by this embodiment.

Referring to FIGS. 8 to 10, it is disclosed that the torsion wrench of the second embodiment of the present invention is mainly engaged with the first magnetic attraction portion 431 by the second magnetic attraction portion 52 in actual use. In order to increase the magnetic attraction between the two, in order to ensure that the pivoting grip 5 will pivot relative to the connecting member 4 when the torque value output exceeds the magnetic force between the two. Moreover, referring to FIGS. 9 and 10, when the pivoting handle 5 is to be pivoted, the second magnetic attraction portion 52 will push against the absorbing member 43 to force the elastic member 432 to compress, so that the second The magnetic attraction portion 52 can smoothly slide away from the adsorbing member 43 and reach the positioning portion 411 and be engaged.

The difference between the torsion wrench of the second embodiment of the present invention and the torsion wrench of the first embodiment is that the magnetic force attracted to each other only by the first and second magnetic attraction portions 13 and 22 is compared with the first embodiment. In this embodiment, the first and second magnetic attraction portions 431 and 52 are further configured to be able to be engaged with each other. Therefore, in actual use, it can be further ensured that the pivoting grip 5 is pivoted relative to the connecting member 4 when the torque value output by the torsion wrench has reached the upper limit.

It is known from the above that the torsion wrench of the present invention can achieve the following effects:

The present invention provides a torsion wrench that controls the upper limit of the torque value that the torsion wrench can output by magnetic attraction, thereby having the effect of prolonging the service life.

The present invention provides a torsion wrench which has the advantages of easy production and reduced manufacturing cost due to the compact structure.

The invention provides a torsion wrench which has the effect of improving the convenience of disassembly and assembly due to the reduction of required components.

The invention provides a torsion wrench which is designed by magnetic attraction and the structure of the engaging structure, thereby having the effect of accurately controlling the torque value that can be output.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

[this invention]

1. . . Connector

11. . . First surface

12. . . Connection

13. . . First magnetic part

2. . . Pivot grip

twenty one. . . Second surface

twenty two. . . Second magnetic part

3. . . Pivot

31. . . Pivot

32. . . Fixed end

4. . . Connector

41. . . First surface

411. . . Positioning department

42. . . Connection

43. . . Adsorber

431. . . First magnetic part

432. . . Elastic component

5. . . Pivot grip

51. . . Second surface

52. . . Second magnetic part

6. . . Ratchet assembly

61. . . ratchet

611. . . Cogging

62. . . Card assembly

[知知]

9. . . Conventional torsion wrench

91. . . Hollow grip

911. . . Room

912. . . Extension

92. . . Hollow cylinder

921. . . Chamber

93. . . Adjustment component

931. . . Linear spring

932. . . Pushing piece

933. . . Sphere

94. . . Adapter

941. . . Pivot

942. . . Concave surface

Figure 1: A cross-sectional view of the combination of US Publication No. 6,162,053.

Fig. 2 is an exploded perspective view showing the first embodiment of the present invention.

Fig. 3 is a sectional view showing the combination of the first embodiment of the present invention.

Fig. 4 is a view showing the use case (1) of the first embodiment of the present invention.

Fig. 5 is a view showing the use case (2) of the first embodiment of the present invention.

Figure 6 is a perspective exploded view of a second embodiment of the present invention.

Figure 7 is a sectional view showing the combination of the second embodiment of the present invention.

Fig. 8 is a view showing the use case (1) of the second embodiment of the present invention.

Fig. 9 is a view showing the use case (2) of the second embodiment of the present invention.

Fig. 10 is a view showing the use case (3) of the second embodiment of the present invention.

1. . . Connector

11. . . First surface

12. . . Connection

13. . . First magnetic part

2. . . Pivot grip

twenty one. . . Second surface

twenty two. . . Second magnetic part

3. . . Pivot

31. . . Pivot

32. . . Fixed end

Claims (10)

A torsion wrench comprising: a connecting member having a first surface, an engaging portion and a first magnetic attracting portion, wherein the first magnetic attracting portion is disposed on the first surface; and a pivoting grip having a a second surface and a second magnetic portion, the second surface is opposite to the first surface, the second magnetic portion is disposed on the second surface, and is attracted to the first magnetic portion; and At least one pivoting member for pivotally disposing the pivoting handle on the connecting member. The torsion wrench of claim 1, wherein the first surface and the second surface are arcuate faces having the same curvature. The torsion wrench of claim 2, wherein the arcuate faces formed by the first surface and the second surface are in contact with each other. The torsion wrench of claim 1, wherein the second magnetic attraction portion and the first magnetic attraction portion are engaged with each other. The torsion wrench of claim 1, wherein one of the first magnetic portion and the second magnetic portion is made of a magnetic material, the first magnetic portion and the second magnetic portion The other of the parts is made of a material that attracts the magnetic material. The torsion wrench of claim 5, wherein a predetermined magnetic force between the first magnetic portion and the second magnetic portion corresponds to a predetermined torque of the one of the connecting members of the pivoting handle. The torsion wrench of claim 1, wherein a positioning portion is disposed between the first surface and the second surface. The torsion wrench according to claim 1, wherein the connecting member has an assembly groove, and the assembly groove is provided with an adsorption member, one end of the adsorption member is the first magnetic portion, and the other end is combined with an elastic element. The torsion wrench of the eighth aspect of the invention, wherein the connecting portion of the connecting member is a positioning groove, the positioning groove is connected to the first surface via the assembling groove, and the positioning groove is provided with a ratchet assembly. The torsion wrench of claim 9, wherein the ratchet assembly includes a ratchet and a latching member, the ratchet is rotatably disposed on the positioning slot, and the ratchet outer wall surface is provided with at least one slot. The latching member is disposed in the assembly slot, and one end of the latching member extends into the slot and the other end is coupled to the elastic member.