Knurled anti-loose bolt for automobile seat base

Abstract

The utility model relates to bolt technical field, and disclose a knurled check bolt for automobile seat base, the utility model scheme, including hexagon bolt, the first hexagonal recess is seted up in the screw head top of hexagon bolt, the screw head bottom of hexagon bolt is placed with the connecting ring, the bottom of connecting ring is provided with rubber antiskid ring, the screw head outside of connecting ring and hexagon bolt all is sleeved with the outer sleeve shell, the outside wall of outer sleeve shell and the bottom of connecting ring all are embossed with knurl, the top of connecting ring is evenly provided with positioning post and internal thread sleeve, the utility model directly sticks into the seat base bolt hole inner wall through the knurl of outer sleeve shell outside and connecting ring bottom, utilizes the bite cooperation of knurl pattern and increases radial friction, the rubber antiskid ring is pressed into the ring gap of screw rod and bolt hole, fills the gap and produces elastic pre -tightening force, and the vibration impact is buffered, through the fixing structure of outer sleeve shell and connecting ring, avoid the relative sliding of assembly.

Description

Technical Field

[0001] This utility model belongs to the field of bolt technology, specifically a knurled anti-loosening bolt for automobile seat base. Background Technology

[0002] In the installation and use of automotive seats, seat base bolts are core fasteners connecting the seat to the vehicle cabin, and their anti-loosening performance directly affects seat stability and passenger safety. Continuous vibrations and bumps during vehicle operation can easily cause gaps to appear between traditional bolts and threaded holes, leading to bolt loosening. Simultaneously, the lateral forces generated during seat adjustment further exacerbate the risk of bolt loosening. Most existing automotive seat bolts rely on spring washers, resisting loosening solely through mechanical friction. These are prone to failure under prolonged vibration, and the bolt head grooves (such as hexagonal grooves) are susceptible to slippage due to wear and corrosion over time, making disassembly impossible with conventional tools. Furthermore, anti-loosening components are often integrated with the bolt design, requiring replacement of the entire bolt after localized wear, increasing maintenance costs. Therefore, we propose a knurled anti-loosening bolt for automotive seat bases. Utility Model Content

[0003] The purpose of this utility model is to provide a knurled anti-loosening bolt for automobile seat bases to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a knurled anti-loosening bolt for an automotive seat base, comprising a hexagonal bolt, wherein the top of the hexagonal bolt head is provided with a first hexagonal groove, a connecting ring is placed at the bottom of the hexagonal bolt head, a rubber anti-slip ring is provided at the bottom of the connecting ring, an outer shell is fitted onto the outer side of both the connecting ring and the hexagonal bolt head, the outer wall of the outer shell and the bottom of the connecting ring are both embossed with knurling, a positioning post and an internal threaded sleeve are evenly provided on the top of the connecting ring, the positioning post is inserted into and magnetically attracted inside the outer shell, the internal threaded sleeve is inserted into the outer shell, and an anti-loosening cross bolt is connected between the positioning post and the outer shell.

[0005] Preferably, the top of the outer shell is provided with a second hexagonal groove, the bottom of the outer shell is provided with a groove, the hexagonal groove is connected to the groove, the head of the hexagonal bolt is located in the first hexagonal groove, and the bottom of the hexagonal bolt thread through the first hexagonal groove and the bottom of the groove.

[0006] Preferably, the connecting ring and the rubber anti-slip ring are both sleeved on the outside of the hexagonal bolt and located in the groove of the outer casing.

[0007] Preferably, the top of the outer shell is uniformly provided with internally threaded countersunk holes, and the top of the inner sidewall of the groove of the outer shell is uniformly provided with a first insertion hole and a second insertion hole, and the internally threaded countersunk holes are connected to the first insertion holes.

[0008] Preferably, the internal threaded sleeve is inserted into the first insertion hole, the anti-loosening cross bolt is screwed into the internal threaded countersunk hole and passes through the internal threaded countersunk hole, and is screwed into the internal threaded sleeve, the top of the positioning post is inlaid with a magnetic block, the positioning post is inserted into the second insertion hole, and the magnetic block is magnetically attracted into the second insertion hole.

[0009] Preferably, the bottom of the connecting ring is flush with the bottom of the outer shell, the top of the hexagonal bolt head is flush with the top of the outer shell and the anti-loosening cross bolt, and the connecting ring, the inner threaded sleeve and the positioning post are integrally formed.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the knurling on the outer side of the outer shell and the bottom of the connecting ring directly adheres to the inner wall of the bolt hole of the seat base, and the interlocking effect of the knurling pattern increases the radial friction resistance; the rubber anti-slip ring is pressed into the annular gap between the screw and the bolt hole, which not only fills the gap but also generates elastic pre-tightening force to buffer vibration and impact; the fixing structure of the outer shell and the connecting ring prevents the components from sliding relative to each other, forming an overall anti-loosening system.

[0011] Disassembly is achieved through the first hexagonal groove on the top of the hexagonal bolt; if the groove is worn, the anti-loosening cross bolt can be removed, the outer shell can be taken off, and the bolt head can be disassembled through the inner hexagonal socket, without damaging the bolt or seat base; and when easily worn parts such as knurling and rubber anti-slip rings are worn, only the corresponding components need to be replaced, without scrapping the entire bolt, reducing maintenance costs; and the assembly method of magnetic positioning post combined with bolt fixation facilitates production assembly and subsequent replacement. Attached Figure Description

[0012] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0013] In the attached diagram: Figure 1 This is a schematic diagram of the structure of a knurled anti-loosening bolt for an automobile seat base according to this utility model; Figure 2 This is a front sectional view of a knurled anti-loosening bolt for an automobile seat base according to the present invention; Figure 3 This is a right-side sectional view of a knurled anti-loosening bolt for an automotive seat base according to this utility model.

[0014] In the diagram: 1. Hex bolt; 12. Outer casing; 13. Anti-loosening Phillips bolt; 14. Internal threaded sleeve; 15. Connecting ring; 151. Rubber anti-slip ring; 16. Positioning pin; 17. Magnetic block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-3 A knurled anti-loosening bolt for a car seat base includes a hex bolt 1. The top of the hex bolt 1's head has a first hexagonal groove. A connecting ring 15 is placed at the bottom of the hex bolt 1's head. A rubber anti-slip ring 151 is fixedly installed at the bottom of the connecting ring 15. An outer sleeve 12 is fitted onto the outer side of both the connecting ring 15 and the hex bolt 1's head. Knurling is imprinted on the outer wall of the outer sleeve 12 and the bottom of the connecting ring 15. A hex screwdriver is inserted into the first hexagonal groove at the top of the hex bolt 1 and rotated, thereby allowing the hex bolt 1 to pass through the bolt hole in the car seat base and engage with the threaded hole in the car cabin, thus securing the car seat. Simultaneously, the outer side of the outer sleeve 12 and the bottom of the connecting ring 15... The knurling of the part will fit against the inner side of the bolt hole of the car seat base, and the rubber anti-slip ring 151 will be pressed into the annular gap between the screw of the hex bolt 1 and the bolt hole of the car seat base. The top of the connecting ring 15 is evenly fixed with a positioning post 16 and an internal thread sleeve 14. The positioning post 16 is inserted into and magnetically attracted in the outer shell 12. The internal thread sleeve 14 is inserted into the outer shell 12 and is connected to the outer shell 12 with an anti-loosening cross bolt 13. The top of the outer shell 12 is provided with a second hexagonal groove, and the bottom of the outer shell 12 is provided with a groove. The hexagonal grooves are connected to each other. The screw head of the hex bolt 1 is located in the first hexagonal groove, and the bottom of the screw of the hex bolt 1 passes through the first hexagonal groove and the bottom of the groove.

[0017] Both the connecting ring 15 and the rubber anti-slip ring 151 are sleeved on the outside of the screw of the hexagonal bolt 1 and located in the groove of the outer casing 12. The top of the outer casing 12 has evenly distributed internal thread countersunk holes. The top of the inner sidewall of the groove of the outer casing 12 has evenly distributed first and second insertion holes. The internal thread countersunk holes are connected to the first insertion holes. The internal thread sleeve 14 is inserted into the first insertion hole. The anti-loosening cross bolt 13 is screwed into the internal thread countersunk hole and passes through the internal thread countersunk hole. It is screwed into the internal thread sleeve 14. The top of the positioning post 16 is embedded with a magnetic block 17. The positioning post 16 is inserted into the second insertion hole. The magnetic block 17 is magnetically attracted into the second insertion hole. The connecting ring 15 is sleeved on the outside of the screw of the hexagonal bolt 1 and positioned below the screw head of the hexagonal bolt 1. Then the screw head of the hexagonal bolt 1 is positioned in the outer casing 12. In the second hexagonal groove, the connecting ring 15 is located in the groove at the bottom of the outer shell 12. Then, the internal threaded sleeve 14 and the positioning post 16 at the top of the connecting ring 15 are inserted into the first and second insertion holes in the groove of the outer shell 12, respectively. At this time, the magnetic block 17 at the top of the positioning post 16 is magnetically attracted into the second insertion hole, thereby initially fixing the connecting ring 15 in the groove at the bottom of the outer shell 12. Then, the anti-loosening cross bolt 13 is screwed into the internal thread countersunk hole and the internal threaded sleeve 14 of the outer shell 12, thereby fixing the connecting ring 15 in the groove of the outer shell 12. The bottom of the connecting ring 15 is flush with the bottom of the outer shell 12, and the top of the screw head of the hexagonal bolt 1 is flush with the top of the outer shell 12 and the anti-loosening cross bolt 13. The connecting ring 15, the internal threaded sleeve 14 and the positioning post 16 are integrally formed.

[0018] Working principle: The connecting ring 15 is sleeved on the outside of the screw of the hexagonal bolt 1, and positioned below the screw head of the hexagonal bolt 1. Then, the screw head of the hexagonal bolt 1 is positioned in the second hexagonal groove of the outer casing 12. At this time, the connecting ring 15 is positioned in the groove at the bottom of the outer casing 12. Then, the internal threaded sleeve 14 at the top of the connecting ring 15 and the positioning pin 16 are respectively inserted into the first insertion hole and the second insertion hole in the groove of the outer casing 12. At this time, the magnetic block 17 at the top of the positioning pin 16 is magnetically attracted into the second insertion hole, thereby initially fixing the connecting ring 15 in the groove at the bottom of the outer casing 12. Then, the anti-loosening cross bolt 13 is connected to the outer casing 12. The internal thread countersunk hole of the outer casing 12 and the internal thread sleeve 14 are screwed together to fix the connecting ring 15 in the groove of the outer casing 12. The hex screwdriver is inserted into the first hexagonal groove at the top of the hex bolt 1 and rotated to pass through the bolt hole of the car seat base and screw it into the internal thread hole of the car seat base, thereby fixing the car seat. At the same time, the knurling on the outer side of the outer casing 12 and the bottom of the connecting ring 15 will fit against the inner side of the bolt hole of the car seat base, and the rubber anti-slip ring 151 will be pressed into the annular gap between the screw of the hex bolt 1 and the bolt hole of the car seat base.

[0019] When it is necessary to disassemble the hex bolt 1, and the first hexagonal groove on the top of the hex bolt 1 is worn and cannot be used normally due to long-term use, simply unscrew the anti-loosening cross bolt 13 and the internal threaded sleeve 14. At this time, the anti-loosening cross bolt 13 will still be screwed into the internal threaded countersunk hole of the outer shell 12. Then, pull the anti-loosening cross bolt 13 upward to move the outer shell 12 upward and separate it from the screw head of the hex bolt 1. At this time, the internal hex socket bolt can be used to fit on the screw head of the hex bolt 1 and rotated to unscrew the hex bolt 1. Similarly, when the knurling on the outer shell 12 and the connecting ring 15, as well as the rubber anti-slip ring 151 at the bottom of the connecting ring 15, is worn due to long-term use, simply unscrew the anti-loosening cross bolt 13 to remove the outer shell 12 and the connecting ring 15 from the outside of the hex bolt 1 for replacement.

Claims

1. A knurled anti-loosening bolt for an automobile seat base, characterized in that, The device includes a hexagonal bolt (1), the top of which has a first hexagonal groove, and a connecting ring (15) is placed at the bottom of the head of the hexagonal bolt (1). A rubber anti-slip ring (151) is provided at the bottom of the connecting ring (15). An outer shell (12) is fitted on the outer side of both the connecting ring (15) and the head of the hexagonal bolt (1). Knurling is embossed on the outer wall of the outer shell (12) and the bottom of the connecting ring (15). A positioning post (16) and an internal thread sleeve (14) are evenly arranged on the top of the connecting ring (15). The positioning post (16) is inserted into and magnetically attracted in the outer shell (12). The internal thread sleeve (14) is inserted into the outer shell (12) and is connected to the outer shell (12) by an anti-loosening cross bolt (13).

2. The knurled anti-loosening bolt for an automobile seat base according to claim 1, characterized in that: The top of the outer shell (12) is provided with a second hexagonal groove, and the bottom of the outer shell (12) is provided with a groove. The hexagonal groove is connected to the groove. The head of the hexagonal bolt (1) is located in the first hexagonal groove. The bottom of the bolt of the hexagonal bolt (1) passes through the first hexagonal groove and the bottom of the groove.

3. The knurled anti-loosening bolt for an automobile seat base according to claim 2, characterized in that: The connecting ring (15) and the rubber anti-slip ring (151) are both sleeved on the outside of the hexagonal bolt (1) and located in the groove of the outer casing (12).

4. The knurled anti-loosening bolt for an automobile seat base according to claim 3, characterized in that: The top of the outer shell (12) is uniformly provided with internal thread countersunk holes, and the top of the inner sidewall of the groove of the outer shell (12) is uniformly provided with a first insertion hole and a second insertion hole, and the internal thread countersunk holes are connected to the first insertion hole.

5. The knurled anti-loosening bolt for an automobile seat base according to claim 4, characterized in that: The internal threaded sleeve (14) is inserted into the first socket. The anti-loosening cross bolt (13) is screwed into the internal thread countersunk hole and passes through the internal thread countersunk hole. It is screwed into the internal threaded sleeve (14). The top of the positioning post (16) is inlaid with a magnetic block (17). The positioning post (16) is inserted into the second socket. The magnetic block (17) is magnetically attracted into the second socket.

6. The knurled anti-loosening bolt for an automobile seat base according to claim 5, characterized in that: The bottom of the connecting ring (15) is flush with the bottom of the outer shell (12), the top of the hexagonal bolt (1) is flush with the top of the outer shell (12) and the anti-loosening cross bolt (13), and the connecting ring (15), the inner thread sleeve (14) and the positioning post (16) are integrally formed.

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