Auxiliary jig for tightening nut

Abstract

The utility model provides a nut tightening auxiliary jig. The nut tightening auxiliary jig comprises a supporting structure; one end of the rotation stopping piece is connected to the supporting structure in a relative rotation preventing mode, and the other end of the rotation stopping piece extends to the outer side of the supporting structure and is used for being connected with the end of the part in an inserted mode so as to limit rotation of the part; the rotating piece is arranged on the outer side of the rotation stopping piece in a sleeving mode, the rotating piece and the rotation stopping piece can rotate relatively, and the rotating piece is used for being connected with the nut in a clamped mode so that the nut can be screwed to the part; and the transmission part is connected with the rotating part and used for transmitting external force to the rotating part, so that the rotating part rotates relative to the rotation stopping part. When the nut is tightened through the jig, the problem that welding spots of parts fall off can be avoided, and therefore the assembly quality is improved; and by adopting the nut tightening auxiliary jig, the operation difficulty of an operator is also reduced, so that the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of nut assembly, and in particular to an auxiliary fixture for tightening nuts. Background Technology

[0002] Tightening nuts is a crucial step in detector assembly. Operators typically need to tighten the nuts onto corresponding parts, which are usually assembled and secured using welding. Traditionally, operators directly tighten the nuts using tooling, which easily leads to weld points detaching or loose nuts. Furthermore, traditional assembly methods require a high level of skill from employees, making them difficult to learn and impacting production efficiency. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a nut tightening auxiliary fixture to reduce the difficulty of operation, improve work efficiency and improve assembly quality.

[0004] To achieve the above and other related objectives, this utility model provides a nut tightening auxiliary fixture comprising: a support structure; an anti-rotation member, one end of which is connected to the support structure in a non-rotatable manner, and the other end of which extends to the outside of the support structure for inserting into the end of the part to restrict the rotation of the part; a rotating member, sleeved on the outside of the anti-rotation member, which is rotatable relative to the anti-rotation member and is used to engage with the nut to tighten the nut onto the part; and a transmission member, which is connected to the rotating member and is used to transmit external force to the rotating member, causing the rotating member to rotate relative to the anti-rotation member.

[0005] Preferably, the cross-sectional shape of one end of the anti-rotation member is non-circular.

[0006] Preferably, the other end of the anti-rotation member is provided with an anti-rotation part, which is used to engage with the part when the anti-rotation member is inserted into the part.

[0007] Preferably, the anti-rotation part is a protruding structure or a groove structure.

[0008] Preferably, the end of the rotating member away from the transmission member is provided with a locking part that is adapted to engage with the nut, and the locking part is used to drive the nut to rotate.

[0009] Preferably, the support structure includes a positioning plate and a fixing cover. The fixing cover has a cavity for accommodating the transmission component, the anti-rotation component, and the rotating component. The positioning plate is located at the opening of the cavity of the fixing cover. The positioning plate is used to align the anti-rotation component and the rotating component with the part and the nut, respectively.

[0010] Preferably, the transmission component includes a drive rod, a drive wheel, and a driven wheel. The drive wheel and the driven wheel are rotatably disposed within the fixed cover. One end of the drive rod is connected to the drive wheel to drive the drive wheel to rotate, and the other end of the drive rod protrudes out of the fixed cover. The drive wheel is used to drive the driven wheel to rotate. A rotating component is connected to the end face of the driven wheel, and the end of the rotating component away from the driven wheel protrudes out of the positioning plate.

[0011] Preferably, the driving wheel and the driven wheel are gears or sprockets. When the driving wheel and the driven wheel are gears, they mesh with each other. When the driving wheel and the driven wheel are sprockets, they are driven by a chain.

[0012] As described above, the nut tightening auxiliary fixture of this utility model has the following beneficial effects: During the tightening process, the anti-rotation component is inserted and engaged with the part, and the rotating component is engaged with the nut. When the transmission component drives the rotating component to rotate, the rotating component drives the nut to rotate, thereby achieving the purpose of tightening the nut. The anti-rotation component can restrict the rotation of the part, thus avoiding the problem of the part's weld points falling off during nut tightening, thereby improving the assembly quality. By using the nut tightening auxiliary fixture, the operational difficulty for the operator is reduced, thereby improving work efficiency. Attached Figure Description

[0013] Figure 1 The diagram shown is a schematic of the nut tightening auxiliary fixture of this utility model.

[0014] Figure 2 The diagram shown is an exploded view of the nut tightening auxiliary fixture of this utility model.

[0015] Figure 3 The diagram shown is a schematic of the anti-rotation component of this utility model.

[0016] Figure 4 The diagram shown is a schematic of the driven wheel and rotating component of this utility model.

[0017] Component designation explanation

[0018] 1. Anti-rotation component; 11. Beveled groove; 12. Anti-rotation part; 2. Rotating component; 21. Snap-fit ​​part; 3. Positioning plate; 31. Third through hole; 4. Fixing cover; 41. First through hole; 42. Second through hole; 5. Drive rod; 6. Driving wheel; 7. Driven wheel. Detailed Implementation

[0019] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0020] Please see Figures 1-4 It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0021] Please see Figure 1 and Figure 2 This embodiment provides a nut tightening auxiliary fixture for tightening nuts onto corresponding parts. The nut tightening auxiliary fixture includes a support structure, a transmission component, an anti-rotation component 1, and a rotating component 2. One end of the anti-rotation component 1 is connected to the support structure in a non-rotatable manner, and the other end of the anti-rotation component 1 extends to the outside of the support structure for inserting the end of the part to restrict the rotation of the part. The rotating component 2 is sleeved on the outside of the anti-rotation component 1, and the rotating component 2 and the anti-rotation component 1 can rotate relative to each other. The rotating component 2 is used to engage with the nut to tighten the nut onto the part. The transmission component is connected to the rotating component 2 and is used to transmit external force to the rotating component 2, so that the rotating component 2 rotates relative to the anti-rotation component 1.

[0022] When using this nut tightening auxiliary fixture, the operator manually screws the nut onto the corresponding part, then inserts the anti-rotation component 1 into the part, and simultaneously engages the rotating component 2 with the nut. Next, the drive transmission component rotates, causing the rotating component 2 to rotate, which in turn rotates the nut, thus tightening it. During the tightening process, the anti-rotation component 1 prevents the part from rotating, limiting its rotation during tightening and thus avoiding damage to the weld points, improving assembly quality. Furthermore, using this fixture reduces the operator's workload, thereby increasing production efficiency.

[0023] The support structure includes a positioning plate 3 and a fixing cover 4. The fixing cover 4 has a cavity for accommodating the transmission component, the anti-rotation component 1, and the rotating component 2. The positioning plate 3 is located at the opening of the cavity of the fixing cover 4. The positioning plate 3 is used to align the anti-rotation component 1 and the rotating component 2 with the parts and the nut, respectively.

[0024] Specifically, the bottom of the cavity of the fixed cover 4 is provided with a first through hole 41 and a second through hole 42, and the positioning plate 3 is provided with a third through hole 31. When the positioning plate 3 is placed over the cavity opening of the fixed cover 4, the transmission component, the anti-rotation component 1 and the rotating component 2 are covered in the area enclosed by the fixed cover 4 and the positioning plate 3, and the fixed cover 4 and the positioning plate 3 protect the transmission component, the anti-rotation component 1 and the rotating component 2.

[0025] In this embodiment, the part is spot-welded to a product and is located in the groove structure of the product. When tightening the nut, the positioning plate 3 is placed in the groove structure of the product. At this time, the side of the positioning plate 3 abuts against the groove wall of the groove structure, and the positioning plate 3 positions the anti-rotation part 1 and the rotating part 2.

[0026] Please see Figure 2 and Figure 3 One end of the anti-rotation member 1 is inserted into the first through hole 41, and the other end of the anti-rotation member 1 protrudes from the third through hole 31 to the positioning plate 3 for insertion and engagement with the part. Part of the transmission component protrudes from the second through hole 42 to the fixing cover 4, so that the transmission component can be driven by external force.

[0027] The cross-sectional shape of one end of the anti-rotation member 1 is non-circular. For example, the end of the anti-rotation member 1 can be polygonal. In this embodiment, the anti-rotation member 1 is columnar, and two opposing chamfered grooves 11 are provided on the side of the end of the anti-rotation member 1. At this time, the end dimension of the anti-rotation member 1 is smaller than the rod dimension. In order to allow the anti-rotation member 1 to be inserted into the first through hole 41, the shape of the first through hole 41 is adapted to the end of the anti-rotation member 1. When the end of the anti-rotation member 1 is inserted into the first through hole 41 by interference fit, the anti-rotation member 1 can avoid rotation under the action of the chamfered grooves 11. In addition, when the end of the anti-rotation member 1 is inserted into the first through hole 41, the rod of the anti-rotation member 1 abuts against the bottom surface of the cavity of the fixed cover 4, thereby achieving the purpose of restricting the movement of the anti-rotation member 1 in the direction perpendicular to the bottom surface of the cavity of the fixed cover 4.

[0028] The other end of the anti-rotation member 1 has an anti-rotation portion 12. The anti-rotation portion 12 is used to engage with the part when the anti-rotation member 1 is inserted into the part. The anti-rotation portion 12 is a protruding structure or a groove structure. In this embodiment, the anti-rotation portion 12 is a protruding structure. It can be understood that the part has a groove structure adapted to the anti-rotation portion 12. When the anti-rotation member 1 is inserted into the part, the anti-rotation portion 12 is inserted into the groove structure, so that the anti-rotation member 1 and the part form a snap-fit, thereby enabling the anti-rotation member 1 to restrict the rotation of the part. In this embodiment, the number of anti-rotation portions 12 is not limited.

[0029] Please see Figure 2 and Figure 4The transmission components include a drive rod 5, a drive wheel 6, and a driven wheel 7. The drive wheel 6 and the driven wheel 7 are rotatably mounted inside the fixed cover 4. One end of the drive rod 5 is connected to the drive wheel 6 to drive the drive wheel 6 to rotate, and the other end of the drive rod 5 protrudes out of the fixed cover 4. The drive wheel 6 is used to drive the driven wheel 7 to rotate. The rotating component 2 is connected to the end face of the driven wheel 7, and the end of the rotating component 2 away from the driven wheel 7 protrudes out of the positioning plate 3.

[0030] Specifically, the drive rod 5 is vertically arranged, and the top end of the drive rod 5 protrudes from the second through hole 42 out of the fixed cover 4. The bottom end of the drive rod 5 is connected to the drive wheel 6. The drive wheel 6 and the driven wheel 7 are both horizontally arranged inside the fixed cover 4, that is, the rotation axis of the drive wheel 6 and the driven wheel 7 is vertically arranged. The lower end face of the driven wheel 7 is connected to the rotating member 2. The driven wheel 7 and the rotating member 2 are both sleeved on the outside of the anti-rotation member 1. In this embodiment, a ball bushing is sleeved on the outside of the anti-rotation member 1, and the driven wheel 7 and the rotating member 2 are both sleeved on the ball bushing.

[0031] The rotating component 2 has a locking part 21 at its end away from the transmission component, which is adapted to engage with the nut. The locking part 21 protrudes from the positioning plate 3 through the third through hole 31 for tightening the nut. In this embodiment, the locking part 21 is a protruding structure. It can be understood that the nut has a groove structure adapted to engage with the locking part 21. The number of locking parts 21 is not limited in this embodiment.

[0032] When the external force drives the drive rod 5 to rotate, the drive rod 5 drives the drive wheel 6 to rotate. The driven wheel 7 rotates relative to the anti-rotation part 1 under the drive of the drive wheel 6 and at the same time drives the rotating part 2 to rotate. When the rotating part 2 rotates to tighten the nut, the ball bushing can make the rotating part 2 rotate more smoothly relative to the anti-rotation part 1.

[0033] The driving wheel 6 and the driven wheel 7 are either gears or sprockets. When the driving wheel 6 and the driven wheel 7 are gears, they mesh with each other. When the driving wheel 6 and the driven wheel 7 are sprockets, they are driven by a chain. In this embodiment, the driving wheel 6 and the driven wheel 7 are gears.

[0034] In summary, the implementation process of the nut tightening auxiliary fixture in this embodiment is as follows: Positioning is performed using the positioning plate 3 to align and insert the anti-rotation component 1 into the part to restrict its rotation. Simultaneously, the locking part 21 on the rotating component 2 engages with the nut. Then, the drive rod 5 is rotated, causing the driving wheel 6 to rotate, which in turn drives the driven wheel 7 to rotate. The driven wheel 7 then drives the rotating component 2 to rotate, thereby causing the nut to rotate relative to the part, achieving the purpose of tightening the nut. Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0035] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A nut tightening auxiliary jig for tightening a nut to a corresponding part, characterized by, include: Support structure; An anti-rotation component, one end of which is connected to the support structure in a manner that prevents relative rotation, and the other end of which extends to the outside of the support structure for inserting into the end of the part to restrict the rotation of the part; A rotating component is sleeved on the outside of the anti-rotation component. The rotating component and the anti-rotation component can rotate relative to each other. The rotating component is used to engage with the nut to tighten the nut onto the part. A transmission component, which is connected to the rotating component, is used to transmit external force to the rotating component, causing the rotating component to rotate relative to the anti-rotation component.

2. The nut tightening aid jig according to claim 1, characterized by: The cross-sectional shape of one end of the anti-rotation component is non-circular.

3. The nut tightening aid jig according to claim 1, characterized by: The other end of the anti-rotation member is provided with an anti-rotation part, which is used to engage with the part when the anti-rotation member is inserted into the part.

4. The nut tightening aid jig according to claim 3, characterized by: The anti-rotation part is a raised structure or a groove structure.

5. The nut tightening aid jig according to claim 1, characterized by: The rotating component has a locking part at one end away from the transmission component, which is adapted to engage with the nut. The locking part is used to drive the nut to rotate.

6. The nut tightening aid jig according to claim 1, characterized by: The support structure includes a positioning plate and a fixing cover. The fixing cover has a cavity for accommodating the transmission component, the anti-rotation component, and the rotating component. The positioning plate is located at the opening of the cavity of the fixing cover. The positioning plate is used to align the anti-rotation component and the rotating component with the part and the nut, respectively.

7. The nut tightening aid jig according to claim 6, characterized by: The transmission component includes a drive rod, a drive wheel, and a driven wheel. The drive wheel and the driven wheel are rotatably disposed within the fixed cover. One end of the drive rod is connected to the drive wheel to drive the drive wheel to rotate, and the other end of the drive rod protrudes out of the fixed cover. The drive wheel is used to drive the driven wheel to rotate. A rotating component is connected to the end face of the driven wheel, and the end of the rotating component away from the driven wheel protrudes out of the positioning plate.

8. The nut tightening aid jig according to claim 7, characterized by: The driving wheel and the driven wheel are gears or sprockets. When the driving wheel and the driven wheel are gears, they mesh with each other. When the driving wheel and the driven wheel are sprockets, they are driven by a chain.

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