Clamping groove type fastening bolt set

Abstract

The utility model relates to the technical field of bolts, and discloses a clamping groove type fastening bolt set which comprises a screw with one end provided with a screw end cap and a nut matched with the screw in a threaded mode, a gasket is arranged between the nut and the screw end cap in a cushioned mode, and a clamping strip is arranged on the end face, close to the gasket, of the screw end cap or the nut. Compared with a bolt structure in the prior art, the bolt set adopting the scheme has the beneficial effects that the bolt set is easy to process and low in cost, the nut can be prevented from being loosened due to the influence of vibration; according to the scheme, when bolt sleeving is affected by external vibration, the clamping block is not prone to being disengaged from the clamping groove due to the fact that the thickness of the clamping block penetrating into the clamping groove is large, the limiting effect of the screw end cap or the nut relative to the gasket can be effectively kept, the screw end cap or the nut cannot rotate relative to the gasket, then the loosening phenomenon cannot be generated, and the stability of fixing an external fixed part is good.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to a grooved card type fastening bolt set. Background Art

[0002] Bolts are common fasteners and are crucial in daily life and industrial production and manufacturing. The application scope of bolts includes: electronic products, mechanical products, digital products, power equipment, electromechanical machinery products, ships, vehicles, water conservancy projects, and even chemical experiments also use bolts.

[0003] For example, the Chinese invention patent with the authorization announcement number CN118257775A: an insulating bolt for photovoltaic use, discloses the following technical solution, including a bolt body and a combined nut matched with it. The bolt body is composed of a bolt head and a bolt column. An internal anti-loosening locking mechanism is inserted inside the bolt head and the bolt column. A first insulating gasket, a second insulating gasket, and a combined insulating bushing are sleeved on the bolt column. The combined nut is composed of a nut body and an external anti-loosening locking mechanism. The external anti-loosening locking mechanism is fixedly connected to one end of the nut body and is matched with the internal anti-loosening locking mechanism. The nut body and the external anti-loosening locking mechanism are both sleeved on the bolt column. Insulating casting sleeves are fixedly arranged on the outer surfaces of the bolt head and the nut body. Through this bolt, the overall insulation performance can be improved, the connection stability with the nut can be improved, and loosening can be avoided.

[0004] The above-mentioned invention patent uses an anti-loosening locking mechanism to avoid the loosening phenomenon caused by the nut being affected by vibration. However, the structure is complex, the production and processing process is complex, and the cost is high. Therefore, the field urgently needs a grooved card type fastening bolt set to solve the problems existing in the prior art. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a grooved card type fastening bolt set to solve the technical problem of the complex structure of the bolt that can avoid the loosening of the nut caused by vibration in the prior art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a grooved card type fastening bolt set, including a screw with a screw end cap at one end, a nut threadedly matched with the screw, and a gasket is padded between the nut and the screw end cap. Using the clamping force between the screw end cap and the nut, the external fixed part is fastened.

[0007] The screw end cap or nut is provided with a clamping strip on the end face close to the direction where the gasket is located, and a clamping groove is opened on the end face of the gasket close to the direction where the clamping strip is located, and the clamping strip is inserted into the clamping groove. A waist-shaped hole is opened on the external fixed part, and a waist-shaped hole matching piece is bent and extended from the end face of the gasket close to the external fixed part, and the waist-shaped hole matching piece is inserted into the waist-shaped hole, which can prevent the gasket from rotating after installation.

[0008] As a preferred embodiment, the screw end cap or nut is provided with at least one movable groove on the edge of the end face close to the direction where the gasket is located, and the screw end cap or nut is provided with a connecting groove in the center of the end face close to the direction where the gasket is located, the connecting groove is connected to the movable groove, and a secondary gasket is installed in the connecting groove; a clamping strip is installed on the outer wall of the secondary gasket, and the clamping strip is located inside the movable groove; the clamping strip includes an elastic connecting piece that is connected and fixed to the outer wall of the secondary gasket, and a clamping block is connected and fixed to one end of the elastic connecting piece away from the secondary gasket; a partial area of ​​the clamping block protrudes from the surface of the screw end cap or nut close to one end of the connecting groove; the end of the clamping block close to the direction of the clamping slot has a rounded corner or chamfered corner on one side edge of the end Angle, during the tightening process of the bolt set, the gasket can press the block toward the inside of the movable groove. When the block is rotating due to the bolt tightening process, the block will be supported by the elastic force of the elastic connecting piece and stuck in the inside of the slot to continue to lock the bolt set. The rounded corners or chamfers are difficult to effectively limit the block in the slot, and the block will be out of the slot. The bolt set is continued to be locked until a suitable tightening degree is reached, and finally the block is stuck in the adjacent slot to complete the locking operation of the bolt set. After the bolt set is locked, the block is not easy to be out of the slot due to the large thickness of the block stuck in the slot and the large matching area between the slot and the slot for limiting. The stability is high.

[0009] As a preferred solution, the thickness of the auxiliary gasket is smaller than the depth of the connecting groove, ensuring that there is sufficient contact area between the nut or screw end cap and the slot to generate sufficient friction and reduce the probability of the bolt loosening.

[0010] As a preferred solution, the elastic connecting piece is curved, which supports and lifts the card block upward so that the card block does not contact the bottom surface of the movable groove when there is no external force. During the tightening process of the bolt set, the card block can move up and down in the movable groove with the help of the elasticity of the elastic connecting piece, which is beneficial to improving the locking effect of the bolt set.

[0011] As a preferred solution, a filling strip is inserted and installed in the gap between the card block and the movable groove. The filling strip provides a pushing force for the card block toward the inside of the card slot, so that the card block can go deep into the card slot. When the bolt set is affected by external vibration, the card block is not easy to fall out of the card slot due to its large thickness when it goes deep into the card slot. The limiting effect of the screw end cap or nut relative to the gasket can be effectively maintained, and it will not rotate relative to the gasket, thereby preventing it from loosening.

[0012] As a preferred solution, a limit tooth groove is formed on the surface of the clamping block away from the clamping slot, and a rack meshing with the limit tooth groove is fixed on the surface of the filling strip close to the limit tooth groove. The limit tooth groove and the rack are meshed with each other, and the filling strip is embedded in the movable slot in an interference fit manner. After the filling strip is installed, it is difficult to loosen and disengage from the movable slot, further improving the stability after the bolt set is fastened.

[0013] Beneficial effects:

[0014] 1. Compared with the prior art, the bolt set of this solution can avoid the loosening of the nut caused by vibration, and has the beneficial effects of being easy to process and low in cost;

[0015] 2. When the bolt set of this solution is affected by external vibration, due to the large thickness of the clamping block inserted into the clamping slot, the clamping block is not easy to disengage from the clamping slot, which can effectively maintain the limiting effect of the screw end cap or nut relative to the gasket, will not rotate relative to the gasket, and thus will not loosen, and has good stability in fixing the external fixed part. Description of the drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0017] Figure 1 Structural schematic diagram of the bolt set for fastening the external fixed part according to Embodiment 1 of the present invention;

[0018] Figure 2 Structural schematic diagram of the bolt set according to Embodiment 1 of the present invention;

[0019] Figure 3 Structural schematic diagram of the bolt set according to Embodiment 2 of the present invention;

[0020] Figure 4 Structural schematic diagram of the bolt set according to Embodiment 3 of the present invention;

[0021] Figure 5 Detailed structural schematic diagram of the nut according to Embodiment 3 of the present invention;

[0022] Figure 6 Detailed structural disassembly diagram of the nut according to Embodiment 3 of the present invention;

[0023] Figure 7 Side view structural schematic diagram of the card strip according to Embodiment 3 of the present invention;

[0024] Figure 8 Schematic diagram of the filling strip structure provided by Embodiment 3 of the present utility model.

[0025] Explanation of reference numerals:

[0026] 101, screw; 102, screw end cap; 103, gasket; 104, nut; 105, externally fixed part; 201, clamping strip; 301, card slot; 302, waist-shaped hole fitting piece; 401, connection slot; 402, movable slot; 403, auxiliary gasket; 404, elastic connection piece; 405, clamping block; 406, limit tooth groove; 501, filling strip. Specific implementation manners

[0027] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further introduced in detail below in conjunction with the accompanying drawings.

[0028] Embodiment 1, as Figure 1 - Figure 2 shown, the card slot type fastening bolt set includes a screw 101 with a screw end cap 102 provided at one end, a nut 104 threadedly engaged with the screw 101, and a gasket 103 is provided between the nut 104 and the screw end cap 102. The externally fixed part 105 is fastened by using the clamping force between the screw end cap 102 and the nut 104;

[0029] A clamping strip 201 is provided on the end face of the screw end cap 102 close to the direction where the gasket 103 is located. A card slot 301 is opened on the end face of the gasket 103 close to the direction where the clamping strip 201 is located. The clamping strip 201 is snapped into the card slot 301. A waist-shaped hole is opened on the externally fixed part 105. A waist-shaped hole fitting piece 302 is bent and extended from one end face of the gasket 103 close to the externally fixed part 105. The waist-shaped hole fitting piece 302 is snapped into the waist-shaped hole, which can prevent the gasket 103 from rotating after installation.

[0030] Embodiment 2, as Figure 3 shown, the card slot type fastening bolt set includes a screw 101 with a screw end cap 102 provided at one end, a nut 104 threadedly engaged with the screw 101, and a gasket 103 is provided between the nut 104 and the screw end cap 102. The externally fixed part 105 is fastened by using the clamping force between the screw end cap 102 and the nut 104;

[0031] A clamping strip 201 is provided on the end face of the nut 104 close to the direction where the gasket 103 is located, and a clamping groove 301 is opened on the end face of the gasket 103 close to the direction where the clamping strip 201 is located. The clamping strip 201 is inserted into the clamping groove 301. A waist-shaped hole is opened on the external fixing member 105. A waist-shaped hole matching piece 302 is bent and extended from one end face of the gasket 103 close to the external fixing member 105. The waist-shaped hole matching piece 302 is inserted into the waist-shaped hole, which can prevent the gasket 103 from rotating after installation.

[0032] Embodiment 3, as Figure 4 - Figure 8 As shown, on the basis of the technical solution of Example 2, at least one movable groove 402 is provided on the edge of the end face of the nut 104 near the direction where the gasket 103 is located, and a connecting groove 401 is provided in the center of the end face of the nut 104 near the direction where the gasket 103 is located, the connecting groove 401 is connected with the movable groove 402, and a secondary gasket 403 is installed in the connecting groove 401; a clamping strip 201 is installed on the outer wall of the secondary gasket 403, and the clamping strip 201 is located inside the movable groove 402; the clamping strip 201 includes an elastic connecting piece 404 connected and fixed to the outer wall of the secondary gasket 403, and a clamping block 405 is connected and fixed at one end of the elastic connecting piece 404 away from the secondary gasket 403; a partial area of ​​the clamping block 405 protrudes from the surface of the nut 104 near one end of the connecting groove 401; the end of the clamping block 405 near the clamping groove 301 has a rounded corner on one side edge of the end Or chamfer, during the tightening process of the bolt set, the gasket 103 can press the block 405 toward the inside of the movable groove 402. When the block 405 is rotating due to the bolt tightening process, the block 405 will be supported by the elastic force of the elastic connecting piece 404 and will be stuck in the inside of the slot 301 to continue to lock the bolt set. The rounded corners or chamfers are difficult to effectively limit the block 405 in the slot 301, and the block 405 will be separated from the slot 301. The bolt set is continued to be locked until a suitable tightening degree is reached, and finally the block 405 is stuck in the adjacent slot 301 to complete the locking operation of the bolt set; after the bolt set is locked, due to the large thickness of the block 405 stuck in the slot 301 and the large matching area between the slot 301 and the slot 301 for limiting, the block 405 is not easy to be separated from the slot 301, and the stability is high.

[0033] The thickness of the auxiliary gasket 403 is less than the depth of the connecting groove 401, which ensures that there is enough contact area between the nut 104 or the screw end cap 102 and the slot 301 to generate enough friction and reduce the probability of the bolt loosening.

[0034] The elastic connecting piece 404 is curved, supporting and lifting the clamping block 405 upward, so that the clamping block 405 does not contact the bottom surface of the movable groove 402 when there is no external force. During the tightening process of the bolt set, the clamping block 405 can move up and down in the movable groove 402 with the help of the elasticity of the elastic connecting piece 404, which is beneficial to improve the locking effect of the bolt set.

[0035] In another embodiment, a filling strip 501 is installed in the gap between the clamping block 405 and the movable slot 402. The filling strip 501 provides a driving force for the clamping block 405 in the direction towards the inside of the clamping slot 301, enabling the clamping block 405 to penetrate deeply into the clamping slot 301. When the bolt assembly is affected by external vibrations, due to the large thickness of the clamping block 405 penetrating into the clamping slot 301, the clamping block 405 is not easily separated from the clamping slot 301, which can effectively maintain the limiting effect of the screw end cap 102 or the nut 104 relative to the gasket 103, and will not rotate relative to the gasket 103, thus preventing loosening. A limiting tooth groove 406 is formed on the surface of the clamping block 405 away from the clamping slot 301. A rack matching the limiting tooth groove 406 is fixed on one side of the filling strip 501 close to the limiting tooth groove 406. The limiting tooth groove 406 and the rack are meshed with each other. The filling strip 501 is embedded in the movable slot 402 in an interference fit manner. After the filling strip 501 is installed, it is difficult to loosen and separate from the movable slot 402, further improving the stability of the bolt assembly after being tightened.

[0036] Only some exemplary embodiments of the present invention are described above by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A slot-type fastening bolt set, comprising a screw (101) having a screw end cap (102) at one end, and a nut (104) threadably matched with the screw (101), characterized in that: A gasket (103) is provided between the nut (104) and the screw end cap (102); The screw end cap (102) or the nut (104) is provided with a clamping strip (201) on the end surface close to the direction where the gasket (103) is located, and a clamping groove (301) is provided on the end surface of the gasket (103) close to the direction where the clamping strip (201) is located, and the clamping strip (201) is clamped into the clamping groove (301), and a waist-shaped hole is provided on the external fixing member (105), and a waist-shaped hole matching piece (302) is bent and extended from one end surface of the gasket (103) close to the external fixing member (105), and the waist-shaped hole matching piece (302) is clamped into the waist-shaped hole.

2. The slot-type fastening bolt set according to claim 1, characterized in that: The screw end cap (102) or the nut (104) is provided with at least one movable groove (402) at the edge of the end face close to the direction where the gasket (103) is located; the screw end cap (102) or the nut (104) is provided with a connecting groove (401) at the center of the end face close to the direction where the gasket (103) is located; the connecting groove (401) is communicated with the movable groove (402); a secondary gasket (403) is installed in the connecting groove (401); a clamping strip (201) is installed on the outer side wall of the secondary gasket (403); the clamping strip (201) is located inside the movable groove (402); The clamping strip (201) comprises an elastic connecting piece (404) connected and fixed to the outer side wall of the auxiliary gasket (403); a clamping block (405) is connected and fixed to one end of the elastic connecting piece (404) away from the auxiliary gasket (403); a part of the clamping block (405) protrudes from the surface of the screw end cap (102) or the nut (104) close to one end of the connecting groove (401); and a rounded corner or chamfer is provided on one side edge of the end of the clamping block (405) close to the direction of the clamping groove (301).

3. The slot-type fastening bolt set according to claim 2, characterized in that: The thickness of the auxiliary gasket (403) is smaller than the depth of the connecting groove (401).

4. The slot-type fastening bolt set according to claim 2, characterized in that: The elastic connecting piece (404) is curved.

5. The slot-type fastening bolt set according to claim 4, characterized in that: A filling strip (501) is installed in the gap between the clamping block (405) and the movable groove (402).

6. The slot-type fastening bolt set according to claim 5, characterized in that: A limiting tooth groove (406) is provided on the surface of the clamping block (405) on one side away from the clamping groove (301); a rack matching the limiting tooth groove (406) is fixed on one side of the filling strip (501) close to the limiting tooth groove (406); the limiting tooth groove (406) and the rack are meshed with each other, and the filling strip (501) is embedded in the movable groove (402) in an interference fit manner.

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