Anti-unscrewing set screw

Abstract

The utility model provides an anti-unscrewing set screw, and relates to the field of anti-unscrewing set screws, the anti-unscrewing set screw comprises a fastening bolt, the fastening bolt comprises a fixing block, a screw rod, a first gasket, a second gasket, a connecting block and a spring, one end of the fastening bolt is provided with a locking assembly, the locking assembly is used for locking the fastening bolt, and the locking assembly is used for locking the fastening bolt. The first gasket and the second gasket are used for preventing thread retreating, the connecting block and the spring are used for relieving vibration, and one end of the screw rod is fixedly connected with the fixing block; through the cooperation of the fixing block, the screw rod, the first gasket, the second gasket, the connecting block and the spring, the effect of preventing unscrewing after the screw is fastened can be achieved, through the cooperation of the first gasket and the second gasket, unscrewing can be prevented, and through the cooperation of the connecting block and the spring, vibration can be relieved through the reset elastic force of the spring; and therefore, the situation that the screw shakes during long-time vibration and the screw is unscrewed can be prevented, and the use stability of the unscrewed screw is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of anti-thread-backflow set screws, in particular to an anti-thread-backflow set screw. Background Art

[0002] Anti-screw screws are specially designed to prevent the screws from loosening or falling off due to vibration or other factors during use. This type of screw usually has an additional locking mechanism to ensure its stability in specific applications. It is often used on special equipment to improve the stability of equipment operation.

[0003] According to Chinese patent application number: 202022528307.2, a set screw with anti-thread backlash that does not loosen is disclosed, comprising a screw head and a screw rod, wherein the screw rod is fixedly connected to the lower side of the screw head, the lower side of the screw head is fixedly connected with an anti-slip protrusion, and the upper side of the screw head is provided with an impact groove; by stamping the surface of the screw head to form an anti-slip protrusion, when the screw is tightened to the assembly component, the anti-slip protrusion replaces the elastic gasket to generate a pre-tightening force between the screw head and the assembly component, while increasing the contact area between the screw head and the surface of the assembly component, thereby improving the anti-loosening effect of the screw;

[0004] The existing technology effectively solves the problems that the traditional screw anti-loosening method requires additional accessories, and since the accessories and the screws do not belong to the same body, the anti-loosening effect is limited, the anti-loosening effect is greatly affected by the accessories, and the use process is relatively cumbersome. It has the advantage of improving the anti-loosening effect of the screws, but this type of anti-threading screw is affected by vibration during use, so that the contact surface between the screw and the fastener will produce friction. Long-term vibration will cause the screw to shake, thereby affecting the anti-threading effect of the screw.

[0005] In summary, the present invention provides a set screw with anti-thread back-out function to solve the above problems. Utility Model Content

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A set screw for preventing thread back-out, comprising a fastening bolt, the fastening bolt comprising a fixing block, a screw, a first gasket, a second gasket, a connecting block and a spring, one end of the fastening bolt is provided with a locking assembly, the locking assembly is used to lock the fastening bolt, the first gasket and the second gasket are used to prevent thread back-out, the connecting block and the spring are used to reduce vibration, one end of the screw is fixedly connected to the fixing block, the first gasket, the second gasket, the connecting block and the spring are all sleeved on the surface of the screw, and the screw is threadedly connected to the locking assembly.

[0008] Furthermore, in the present invention, one end of the connecting block is fixedly connected to the first gasket, the second gasket is engaged with the first gasket, and one end of the second gasket away from the first gasket contacts the surface of the fastener.

[0009] Furthermore, in the present invention, one end of the spring is fixedly connected to the connecting block, the other end of the spring extends to the inner cavity of the fixing block and is movably connected to the inner cavity of the fixing block, and a cross groove is provided at the end of the fastening bolt away from the screw rod.

[0010] Furthermore, in the present invention, the locking assembly includes a self-locking nut, a third gasket and a fourth gasket, the third gasket and the fourth gasket are used to prevent falling off, and the self-locking nut is used to fix the screw.

[0011] Furthermore, in the present invention, one end of the third gasket is fixedly connected to the self-locking nut, the third gasket is engaged with the surface of the fourth gasket, and one end of the fourth gasket away from the third gasket is in contact with the surface of the fastener.

[0012] Furthermore, in the present invention, the other end of the screw extends to the inner cavity of the self-locking nut and is threadedly connected to the inner cavity of the self-locking nut.

[0013] Beneficial effects: The utility model has the following beneficial effects:

[0014] The utility model can prevent the thread from being withdrawn after the screw is tightened by cooperating with the fixing block, the screw rod, the first gasket, the second gasket, the connecting block and the spring. The thread is prevented from being withdrawn by cooperating with the first gasket and the second gasket. The connection block and the spring can reduce vibration by the restoring elastic force of the spring, thereby preventing the screw from shaking during long-term vibration and causing thread withdrawal, thereby effectively improving the stability of the anti-thread-withdrawal screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 This is a schematic structural diagram of the first gasket and the second gasket of the utility model in a separated state;

[0017] Figure 3 This is a schematic diagram of the explosion state structure of the fastening bolt of the utility model;

[0018] Figure 4 This is a schematic structural diagram of the connection state of the fixing block and the cross slot of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the locking assembly of the utility model in a separated state.

[0020] In the picture:

[0021] 1. Fastening bolt; 101. Fixing block; 102. Screw; 103. First gasket; 104. Second gasket; 105. Connecting block; 106. Spring; 107. Cross slot; 2. Locking assembly; 201. Self-locking nut; 202. Third gasket; 203. Fourth gasket. DETAILED DESCRIPTION

[0022] In order to better understand the technical content of the present invention, specific embodiments are given and described as follows in conjunction with the accompanying drawings. Various aspects of the present invention are described in this disclosure with reference to the accompanying drawings, in which many illustrative embodiments are shown. The embodiments of the present disclosure are not necessarily defined to include all aspects of the present invention. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the present invention are not limited to any implementation method. In addition, some aspects disclosed in the present invention can be used alone or in any appropriate combination with other aspects disclosed in the present invention.

[0023] Example 1

[0024] like Figure 1-5 As shown, it is the first embodiment of the utility model, which provides an anti-thread back-out fastening screw, including a fastening bolt 1, the fastening bolt 1 including a fixing block 101, a screw 102, a first gasket 103, a second gasket 104, a connecting block 105 and a spring 106, one end of the fastening bolt 1 is provided with a locking assembly 2, the locking assembly 2 is used to lock the fastening bolt 1, the first gasket 103 and the second gasket 104 are used to prevent thread back-out, the connecting block 105 and the spring 106 are used to reduce vibration, one end of the screw 102 is fixedly connected to the fixing block 101, the first gasket 103, the second gasket 104, the connecting block 105 and the spring 106 are all sleeved on the surface of the screw 102, and the screw 102 is threadedly connected to the locking assembly 2.

[0025] like Figure 1-5 As shown, the first gasket 103 is sleeved on the surface of the screw 102, so that one end of the spring 106 and the connecting block 105 extends to the inner cavity of the fixing block 101, and then the second gasket 104 is installed on the surface of the fastener, and the screw 102 passes through the fastener and is fixed in conjunction with the locking assembly 2. The cooperation of the first gasket 103 and the second gasket 104 can prevent the thread from being withdrawn, and the cooperation of the connecting block 105 and the spring 106 can reduce the vibration through the reset elastic force of the spring 106, thereby preventing the screw from shaking during long-term vibration, causing the thread to be withdrawn, and effectively improving the stability of the anti-thread-withdrawal screw.

[0026] Example 2

[0027] Reference Figure 1-5 , which is the second embodiment of the present utility model, and this embodiment is based on the previous embodiment.

[0028] In this embodiment, one end of the connecting block 105 is fixedly connected to the first gasket 103 , the second gasket 104 is engaged with the first gasket 103 , and one end of the second gasket 104 away from the first gasket 103 contacts the surface of the fastener.

[0029] One end of the spring 106 is fixedly connected to the connecting block 105 , and the other end of the spring 106 extends to the inner cavity of the fixing block 101 and is movably connected to the inner cavity of the fixing block 101 . A cross slot 107 is provided at the end of the fastening bolt 1 away from the screw rod 102 .

[0030] The locking assembly 2 includes a self-locking nut 201 , a third washer 202 and a fourth washer 203 . The third washer 202 and the fourth washer 203 are used to prevent falling off, and the self-locking nut 201 is used to fix the screw 102 .

[0031] One end of the third washer 202 is fixedly connected to the self-locking nut 201 , the third washer 202 is engaged with the surface of the fourth washer 203 , and one end of the fourth washer 203 away from the third washer 202 is in contact with the surface of the fastener.

[0032] One end of the third washer 202 is fixedly connected to the self-locking nut 201 , the third washer 202 is engaged with the surface of the fourth washer 203 , and one end of the fourth washer 203 away from the third washer 202 is in contact with the surface of the fastener.

[0033] like Figure 1-5 As shown, the cross groove 107 can be used to facilitate the disassembly of the fastening bolt 1. The surface of the fixing block 101 is also provided with anti-slip grooves and can also be disassembled with a wrench. The reset elastic force of the spring 106 can slow down the vibration energy. The cooperation of the first gasket 103 and the second gasket 104 can increase the friction area, thereby achieving an anti-slip effect. The self-locking nut 201, the third gasket 202 and the fourth gasket 203 are located on the other side of the fastener. The screw 102 is sequentially passed through the fourth gasket 203 and the third gasket 202 and extended to the inner cavity of the self-locking nut 201, and then fixed with a wrench, so that it can be used to fix the fastener.

[0034] When in use, the first gasket 103 is sleeved on the surface of the screw 102, so that one end of the spring 106 and the connecting block 105 extends to the inner cavity of the fixing block 101, and then the second gasket 104 is installed on the surface of the fastener, the screw 102 passes through the fastener and cooperates with the locking assembly 2 to fix it. The locking assembly 2 is located on the other side of the fastener, and the screw 102 passes through the inner cavity of the self-locking nut 201 and is threadedly connected to the inner cavity of the self-locking nut 201, so that it can be fixed. The cooperation of the first gasket 103 and the second gasket 104 can prevent the thread from being withdrawn. The cooperation of the connecting block 105 and the spring 106 can slow down the vibration through the reset elastic force of the spring 106, thereby preventing the screw from shaking during long-term vibration, causing the thread to be withdrawn, and effectively improving the stability of the anti-thread-withdrawal screw.

[0035] The standard parts used in this application document can all be purchased from the market, and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field, which is common knowledge in this field. In addition, this application is mainly used to protect mechanical devices, so this application no longer explains the control method and circuit connection in detail.

[0036] While the present invention has been described above with reference to preferred embodiments, this is not intended to limit the present invention. Persons skilled in the art will readily appreciate that various modifications and variations may be made without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A set screw for preventing thread withdrawal, comprising a fastening bolt (1), characterized in that: The fastening bolt (1) comprises a fixing block (101), a screw rod (102), a first gasket (103), a second gasket (104), a connecting block (105) and a spring (106); one end of the fastening bolt (1) is provided with a locking assembly (2); the locking assembly (2) is used to lock the fastening bolt (1); the first gasket (103) and the second gasket (104) are used to prevent the thread from being withdrawn; the connecting block (105) and the spring (106) are used to reduce vibration; one end of the screw rod (102) is fixedly connected to the fixing block (101); the first gasket (103), the second gasket (104), the connecting block (105) and the spring (106) are all sleeved on the surface of the screw rod (102); and the screw rod (102) is threadedly connected to the locking assembly (2).

2. The anti-thread backlash set screw according to claim 1, characterized in that: One end of the connecting block (105) is fixedly connected to the first gasket (103), the second gasket (104) is engaged with the first gasket (103), and one end of the second gasket (104) away from the first gasket (103) contacts the surface of the fastener.

3. The anti-thread backlash set screw according to claim 1, characterized in that: One end of the spring (106) is fixedly connected to the connecting block (105), and the other end of the spring (106) extends to the inner cavity of the fixing block (101) and is movably connected to the inner cavity of the fixing block (101). A cross slot (107) is provided at one end of the fastening bolt (1) away from the screw rod (102).

4. The anti-thread backlash set screw according to claim 1, characterized in that: The locking assembly (2) comprises a self-locking nut (201), a third washer (202) and a fourth washer (203), wherein the third washer (202) and the fourth washer (203) are used to prevent falling off, and the self-locking nut (201) is used to fix the screw rod (102).

5. The anti-thread backlash set screw according to claim 4, characterized in that: One end of the third gasket (202) is fixedly connected to the self-locking nut (201), the third gasket (202) is engaged with the surface of the fourth gasket (203), and one end of the fourth gasket (203) away from the third gasket (202) is in contact with the surface of the fastener.

6. The anti-thread backlash set screw according to claim 1, characterized in that: The other end of the screw rod (102) extends to the inner cavity of the self-locking nut (201) and is threadedly connected to the inner cavity of the self-locking nut (201).

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