Bidirectional adjustable mechanical torque wrench

Abstract

The utility model discloses a bidirectional adjustable mechanical torque wrench which comprises an outer sleeve and an inner sleeve, one side of the outer sleeve is fixedly connected with a handle butt joint arm, a rotary connecting piece is rotatably installed in an annular groove, and an upper clamping groove structure and a lower clamping groove structure are arranged on the outer circumferential face of the inner sleeve. A mounting chamber is arranged at the joint of the outer sleeve and the handle butt joint arm, a forward clamping plate and a reverse clamping plate are arranged in the mounting chamber, one end of the forward clamping plate is controlled by a sliding switch to extend out of the telescopic opening, one end of the forward clamping plate is clamped into the lower clamping groove after extending out of the telescopic opening, and one end of the reverse clamping plate is controlled by the sliding switch to extend out of the telescopic opening. One end of the reverse clamping plate extends out of the telescopic opening and then is clamped into the upper clamping groove. According to the bidirectional adjustable mechanical torque wrench, the relative rotation direction of the outer sleeve and the inner sleeve can be adjusted and switched, bidirectional adjustment of the torque wrench is achieved, and a user can conveniently and rapidly switch the rotation direction of the nut when using the wrench.

Description

Technical Field

[0001] This utility model belongs to the technical field of torque wrenches, specifically relating to a bidirectional adjustable mechanical torque wrench. Background Technology

[0002] Torque wrenches are used to tighten or loosen nuts. Existing torque wrenches typically have a one-way self-locking socket, meaning they can only rotate in one direction relative to the wrench body. Turning the wrench in the opposite direction causes the socket to rotate, tightening the nut. To loosen the nut, the wrench's vertical direction is adjusted; the socket is then placed on the nut, and the wrench is operated to loosen it. This wrench structure is simple and sufficient for daily operation. However, when a screw has multiple nuts that require repeated forward and reverse rotation, this conventional self-locking structure obviously increases the difficulty of operation, making the wrench's use complex and cumbersome, and unsuitable for such special situations. Utility Model Content

[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a bidirectional adjustable mechanical torque wrench, including an outer sleeve and an inner sleeve. A handle connecting arm is fixedly connected to one side of the outer sleeve. An inner annular groove is provided on the inner circumferential surface of the outer sleeve. The inner sleeve is located inside the outer sleeve and is coaxially arranged with the outer sleeve. The interior of the inner sleeve has a nut groove with a cross-section of a regular hexagon. An outer annular groove is provided on the outer circumferential surface of the inner sleeve. The outer annular groove and the inner annular groove are spliced ​​to form an annular groove. A rotating connecting piece is rotatably installed in the annular groove. An upper groove structure and a lower groove structure are provided on the outer circumferential surface of the inner sleeve. The upper groove structure is composed of several upper grooves arranged in a row around the circumference of the inner sleeve. The lower groove structure is composed of several lower grooves arranged in a row around the circumference of the inner sleeve. The upper groove and the lower groove each include an inclined groove bottom surface. One end of the inclined groove bottom surface of the upper groove is connected to the outer circumference of the inner sleeve. The outer sleeve has a smooth transition on one side and a locking surface on the other. The bottom surface of the inclined groove of the lower slot smoothly transitions with the outer circumference of the inner sleeve at one end and is connected to a locking surface at the other end. The inclined direction of the bottom surface of the inclined groove of the upper slot is opposite to that of the bottom surface of the inclined groove of the lower slot. An installation chamber is provided at the connection between the outer sleeve and the handle docking arm. An extension port communicating with the installation chamber is provided on the inner wall of the outer sleeve. A positive locking plate and a negative locking plate are provided in the installation chamber. One end of the positive locking plate is rotatably installed in the installation chamber, and the other end extends out of the extension port controlled by a sliding switch. After one end of the positive locking plate extends out of the extension port, it is locked into the lower slot. One end of the negative locking plate is rotatably installed in the installation chamber, and the other end extends out of the extension port controlled by a sliding switch. After one end of the negative locking plate extends out of the extension port, it is locked into the upper slot. The sliding switch is installed at the connection between the outer sleeve and the handle docking arm.

[0004] As a preferred embodiment of the above technical solution, the sliding switch includes an outer slide and an inner slide, which are fixedly connected by a fixing rod. The connection between the outer sleeve and the handle arm is provided with an elongated hole that connects to the installation chamber. The fixing rod moves through the elongated hole. The inner slide has a left inclined surface and a right inclined surface. The forward locking plate has a left arc-shaped protrusion for contacting the left inclined surface, and the reverse locking plate has a right arc-shaped protrusion for contacting the right inclined surface.

[0005] As a preferred embodiment of the above technical solution, the forward locking plate is kept in a state of being attached to the left inclined surface by a torsion spring, and the reverse locking plate is kept in a state of being attached to the right inclined surface by a torsion spring.

[0006] As a preferred embodiment of the above technical solution, the left arc-shaped protrusion and the left inclined surface have a magnetic attraction force, and the right arc-shaped protrusion and the right inclined surface have a magnetic attraction force.

[0007] As a preferred embodiment of the above technical solution, the rotating connector is a slip ring, with part of the slip ring located in the outer ring groove and the other part located in the inner ring groove.

[0008] The beneficial effects of this utility model are: the bidirectional adjustable mechanical torque wrench of this utility model can adjust and switch the relative rotation direction of the outer sleeve and the inner sleeve, realizing the bidirectional adjustability of the torque wrench, which makes it convenient for users to quickly switch the rotation direction of the nut when using the wrench. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model;

[0011] Figure 3 This is a schematic diagram of the inner sleeve structure;

[0012] Figure 4 This is a schematic diagram of the cross-sectional structure of the inner sleeve. Detailed Implementation

[0013] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0014] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] like Figure 1-4As shown, a bidirectional adjustable mechanical torque wrench includes an outer sleeve 1 and an inner sleeve 2. A handle connecting arm 3 is fixedly connected to one side of the outer sleeve 1. An inner annular groove 4 is provided on the inner circumferential surface of the outer sleeve 1. The inner sleeve 2 is located inside the outer sleeve 1 and is coaxially arranged with the outer sleeve 1. The interior of the inner sleeve 2 has a nut groove 5 with a cross-section of regular hexagon. An outer annular groove 6 is provided on the outer circumferential surface of the inner sleeve 2. The outer annular groove 6 and the inner annular groove 4 are joined to form an annular groove, which is rotatable. The inner sleeve 2 is equipped with a rotating connector. The outer circumferential surface of the inner sleeve 2 has an upper slot structure and a lower slot structure. The upper slot structure consists of several upper slots 7 arranged in a row around the circumference of the inner sleeve 2, and the lower slot structure consists of several lower slots 8 arranged in a row around the circumference of the inner sleeve 2. Both the upper slot 7 and the lower slot 8 include an inclined groove bottom surface 9. One end of the inclined groove bottom surface 9 of the upper slot 7 smoothly transitions to the outer circumferential surface of the inner sleeve 2, and the other end is connected to a locking surface 10. The lower slot 8… One end of the inclined groove bottom surface 9 smoothly transitions to the outer circumferential surface of the inner sleeve 2, and the other end is connected to the locking surface 10. The inclined direction of the inclined groove bottom surface 9 of the upper locking groove 7 is opposite to that of the inclined groove bottom surface 9 of the lower locking groove 8. An installation chamber 11 is provided at the connection between the outer sleeve 1 and the handle docking arm 3. An extension port 12 communicating with the installation chamber 11 is provided on the inner wall of the outer sleeve 1. A forward locking plate 13 and a reverse locking plate 14 are provided in the installation chamber 11. One end of the forward locking plate 13 is rotatably installed in the installation chamber 11, and the other end extends out of the extension port 12 controlled by a sliding switch. After one end of the forward locking plate 13 extends out of the extension port 12, it is locked into the lower locking groove 8. One end of the reverse locking plate 14 is rotatably installed in the installation chamber 11, and the other end extends out of the extension port 12 controlled by a sliding switch. After one end of the reverse locking plate 14 extends out of the extension port 12, it is locked into the upper locking groove 7. The sliding switch is installed at the connection between the outer sleeve 1 and the handle docking arm 3.

[0017] Furthermore, the sliding switch includes an outer slide 15 and an inner slide 16, which are fixedly connected by a fixing rod 17. The connection between the outer sleeve 1 and the handle docking arm 3 has an elongated hole communicating with the mounting chamber 11. The fixing rod 17 moves through the elongated hole. The inner slide 16 has a left-inclined surface 18 and a right-inclined surface 19. The forward locking plate 13 has a left arc-shaped protrusion 20 for contacting the left-inclined surface 18, and the reverse locking plate 14 has a right arc-shaped protrusion 21 for contacting the right-inclined surface 19. Both the forward locking plate 13 and the reverse locking plate 14 have a certain degree of elasticity and can undergo a certain elastic deformation. The outer slide 15 controls the entire sliding switch to move to the left or right. When the slide switch is to the left, the left inclined surface 18 presses against the left arc-shaped protrusion 20, thereby pushing one end of the forward locking plate 13 out of the telescopic opening 12. When the outer sleeve 1 is rotated, one end of the forward locking plate 13 can be inserted into the lower locking groove 8. At this time, the outer sleeve 1 can rotate in both directions, while the inner sleeve 2 can only rotate in the forward direction. When the slide switch is to the right, the right inclined surface 19 presses against the right arc-shaped protrusion 21, thereby pushing one end of the reverse locking plate 14 out of the telescopic opening 12. When the outer sleeve 1 is rotated, one end of the reverse locking plate 14 can be inserted into the upper locking groove 7. At this time, the outer sleeve 1 can rotate in both directions, while the inner sleeve 2 can only rotate in the reverse direction.

[0018] Furthermore, the forward locking plate 13 is held against the left-facing inclined surface 18 by a torsion spring 22, and the reverse locking plate 14 is held against the right-facing inclined surface 19 by a torsion spring 22. The forward locking plate 13 and the reverse locking plate 14 are respectively mounted in the mounting chamber 11 via a rotating shaft. A torsion spring 22 is fitted onto the rotating shaft, ensuring that the forward locking plate 13 and the reverse locking plate 14 remain retracted within the mounting chamber 11 without being obstructed by the inner slide 16. To limit the rotation angle of the forward locking plate 13 and the reverse locking plate 14, limiting surfaces are provided on both sides of the telescopic opening 12.

[0019] Furthermore, the left arc-shaped protrusion 20 and the left inclined surface 18 have a magnetic attraction, and the right arc-shaped protrusion 21 and the right inclined surface 19 have a magnetic attraction. The magnetic attraction further enhances the control of the sliding switch over the forward locking plate 13 and the reverse locking plate 14. The inner slide 16 itself can be made of a permanent magnet, so that the inner slide 16 can still effectively control the forward locking plate 13 and the reverse locking plate 14 even when the torsion spring 22 is loose or fails.

[0020] Furthermore, the rotating connector is a slip ring 23, with part of the slip ring 23 located in the outer ring groove 6 and another part located in the inner ring groove 4. Lubricating oil is applied to the slip ring 23 to allow the outer sleeve 1 and the inner sleeve 2 to rotate relatively smoothly.

[0021] It is worth mentioning that the torsion spring and other technical features involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control methods and spatial arrangement of these technical features can be adopted by conventional choices in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not elaborate further.

[0022] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experimentation on the basis of the prior art should be within the scope of protection defined by the claims.

Claims

1. A bidirectional adjustable mechanical torque wrench, characterized in that, The utility model relates to a handle docking arm, the utility model discloses a handle docking arm, which comprises an outer sleeve, an inner sleeve, a handle docking arm is fixedly connected to one side of the outer sleeve, an inner circumferential surface of the outer sleeve is provided with an inner ring groove, the inner sleeve is located in the outer sleeve and is coaxially arranged with the outer sleeve, the inner sleeve has a screw cap slot with a regular hexagon cross section in the inside, an outer circumferential surface of the inner sleeve is provided with an outer ring groove, the outer ring groove and the inner ring groove are spliced to form an annular groove, a rotating connecting piece is rotatably installed in the annular groove, the outer circumferential surface of the inner sleeve is provided with upper and lower clamping groove structures, the upper clamping groove structure is composed of a plurality of upper clamping grooves arranged in a whole line around the circumferential surface of the inner sleeve, the lower clamping groove structure is composed of a plurality of lower clamping grooves arranged in a whole line around the circumferential surface of the inner sleeve, the upper and lower clamping grooves each comprise an inclined groove bottom surface, one end of the inclined groove bottom surface of the upper clamping groove is smoothly connected to the outer circumferential surface of the inner sleeve, and the other end is connected to a clamping surface; one end of the inclined groove bottom surface of the lower clamping groove is smoothly connected to the outer circumferential surface of the inner sleeve, and the other end is connected to a clamping surface; the inclined direction of the inclined groove bottom surface of the upper clamping groove is opposite to the inclined direction of the inclined groove bottom surface of the lower clamping groove, the connecting position of the outer sleeve and the handle docking arm is provided with a mounting chamber, the inner wall of the outer sleeve is provided with an expansion opening communicating with the mounting chamber, the mounting chamber is provided with a forward clamping plate and a reverse clamping plate, one end of the forward clamping plate is rotatably installed in the mounting chamber, the other end is controlled to extend out of the expansion opening through a sliding switch, the forward clamping plate is clamped into the lower clamping groove after extending out of the expansion opening, one end of the reverse clamping plate is rotatably installed in the mounting chamber, the other end is controlled to extend out of the expansion opening through the sliding switch, and the reverse clamping plate is clamped into the upper clamping groove after extending out of the expansion opening; the sliding switch is installed at the connecting position of the outer sleeve and the handle docking arm.

2. The bidirectional adjustable mechanical torque wrench of claim 1, wherein, The sliding switch comprises an outer sliding seat and an inner sliding seat, the outer sliding seat and the inner sliding seat are fixedly connected through a fixing rod, the connecting position of the outer sleeve and the handle docking arm is provided with a long hole communicating with the mounting chamber, the fixing rod is movably arranged through the long hole, the inner sliding seat is provided with a left inclined surface and a right inclined surface, the forward clamping plate is provided with a left arc-shaped protrusion for contacting the left inclined surface, and the reverse clamping plate is provided with a right arc-shaped protrusion for contacting the right inclined surface.

3. The bidirectional adjustable mechanical torque wrench of claim 2, wherein, The forward clamping plate is kept close to the left inclined surface through a torsional spring, and the reverse clamping plate is kept close to the right inclined surface through a torsional spring.

4. The bidirectional adjustable mechanical torque wrench of claim 3, wherein, The left arc-shaped protrusion and the left inclined surface have magnetic attraction, and the right arc-shaped protrusion and the right inclined surface have magnetic attraction.

5. The bidirectional adjustable mechanical torque wrench of claim 1, wherein, The rotating connecting piece is a slip ring, and the slip ring is partially arranged in the outer ring groove and partially arranged in the inner ring groove.

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