Waterproof fastening bolt with sealing ring

Abstract

This utility model discloses a waterproof fastening bolt with a sealing ring, relating to the field of bolt technology. The waterproof fastening bolt with a sealing ring includes a bolt body, which consists of a bolt head and a threaded rod. The threaded rod is located at the center of the bottom of the bolt head. The upper part of the threaded rod is a non-threaded section. The outer wall of the non-threaded section has a first annular groove. Pre-drilled holes are provided on both sides and at both ends of the inner wall of the first annular groove. A first spring is installed inside the pre-drilled holes. A sealing block is installed at the other end of the first spring. The other end of the sealing block passes through the pre-drilled holes and is fitted with a first sealing ring. The first sealing ring is located inside the first annular groove. A second sealing ring is installed on the outer wall of the first sealing ring. This solution solves the problem that existing fastening bolts lack a waterproof structure during use, allowing moisture to seep into the vehicle along the bolt-nut connection, leading to corrosion at the seepage point.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology, specifically a waterproof fastening bolt with a sealing ring. Background Technology

[0002] Bolts are widely used fasteners, generally consisting of a head and a shank. They are used in conjunction with threaded holes. In the automobile manufacturing process, there are many bolt and nut connection and assembly structures on the vehicle body, and most bolts are exposed parts.

[0003] As described in announcement number CN203297260U, this device includes a bolt head, a screw, and threads on the outer wall of the screw. The bolt head is fixedly connected to the screw via a connector, which is an integral part of the screw. A groove is provided on the outer wall of the lower end of the screw, and symmetrical protrusions are provided at the upper end of the groove. A stop block is provided on the left side of the connector. A cross groove is provided in the middle of the bolt head, and a protective sleeve is provided on the bolt head. The purpose of this utility model is to design a fastening bolt with a simple structure. The protrusions make the bolt more secure and prevent it from loosening. The groove at the lower end of the bolt can effectively remove impurities, and the stop block prevents the bolt from rotating synchronously.

[0004] The aforementioned device lacks a waterproof structure during use, allowing moisture to seep into the vehicle through the bolt and nut connections, leading to corrosion at the seepage points. Therefore, we propose a waterproof fastening bolt with a sealing ring to address the aforementioned problems. Utility Model Content

[0005] The purpose of this utility model is to provide a waterproof fastening bolt with a sealing ring, so as to solve the problem mentioned in the background art that the existing fastening bolts do not have a waterproof structure during use, and water vapor will seep into the vehicle along the bolt and nut connection, causing corrosion at the seepage point.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a waterproof fastening bolt with a sealing ring, comprising a bolt body, the bolt body being composed of a bolt head and a threaded rod, the threaded rod being located at the center of the bottom of the bolt head, the upper part of the threaded rod being configured as a non-threaded section, the outer wall of the non-threaded section being provided with a first annular groove, the inner wall of the first annular groove being provided with reserved holes on both sides and at both ends, a first spring being installed inside the reserved holes, a sealing block being installed at the other end of the first spring, the other end of the sealing block being installed with a first sealing ring through the reserved holes, the first sealing ring being located inside the first annular groove, a second sealing ring being installed on the outer wall of the first sealing ring, a second annular groove being provided at the connection between the outer wall of the threaded rod and the bolt head, a third sealing ring being installed inside the second annular groove, the cross-sectional shape of the third sealing ring being an inverted L shape.

[0007] Preferably, the lower part of the screw is configured as a threaded section, and the outer wall of the threaded section is provided with a threaded groove.

[0008] Preferably, a fixed sleeve is installed inside the first spring. One end of the fixed sleeve is fixedly connected to the inner wall of the reserved hole, and the other end of the fixed sleeve is movably connected to a movable column. The other end of the movable column is fixedly connected to the sealing block.

[0009] Preferably, the lower part of the second sealing ring is tapered, and the diameter of the bottom ring of the second sealing ring is smaller than the diameter of the top ring of the second sealing ring.

[0010] Preferably, a flat washer is connected to the outer wall of the upper part of the third sealing ring, a third annular groove is provided at the bottom of the bolt head, the top of the flat washer is located inside the third annular groove, and is glued to the inner top of the third annular groove.

[0011] Preferably, the bolt head has an internal groove, the bottom of the internal groove has a hexagonal slot, and the top of the bolt head has a through hole that communicates with the internal groove.

[0012] Preferably, a second spring is installed on both sides and both ends inside the built-in groove, and a clamping block is installed on the other end of the second spring. The upper part of the other end of the clamping block is set as an inclined surface, and the lower part of the other end of the clamping block is set as a vertical surface. A telescopic rod is installed inside the second spring.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) The present invention uses the tapered design of the lower part of the second sealing ring so that the second sealing ring enters the hole of the connector along with the screw. The hole wall pushes the second sealing ring and the first sealing ring back. The first sealing ring and the second sealing ring can fill the gap between the screw and the hole of the connector and drive the sealing block to move into the reserved hole to seal the reserved hole. The first spring forms a dynamic compensation sealing ring, which solves the problem that the existing fastening bolts do not have a waterproof structure during use, and water vapor will seep into the vehicle along the bolt and nut connection, causing corrosion at the seepage point.

[0015] (2) The inclined surface compresses the second spring when the wrench is inserted. The wrench head passes through the built-in groove and is inserted into the hexagonal slot. The bolt body can be rotated forward or backward by rotating the wrench, so as to install or remove the bolt body. The wrench can be fixed and clamped by the cooperation of the second spring, the clamping block and the vertical surface, improving the connection effect between the wrench and the bolt body and preventing the wrench from slipping. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a front cross-sectional view of the present invention.

[0018] Figure 3 This is a schematic diagram of the top cross-sectional structure of the present invention. Figure 1 ;

[0019] Figure 4 This is a schematic diagram of the top cross-sectional structure of the present invention. Figure 2 ;

[0020] In the diagram: 1. Bolt body; 2. Bolt head; 3. Bolt rod; 4. Non-threaded section; 5. Threaded section; 6. Threaded groove; 7. First annular groove; 8. Reserved hole; 9. First spring; 10. Sealing block; 11. Fixed sleeve; 12. Movable column; 13. First sealing ring; 14. Second sealing ring; 15. Second annular groove; 16. Third sealing ring; 17. Flat washer; 18. Third annular groove; 19. Internal groove; 20. Hexagonal slot; 21. Through hole; 22. Second spring; 23. Clamping block; 24. Inclined surface; 25. Vertical surface; 26. Telescopic rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figure 1-4This utility model provides an embodiment of a waterproof fastening bolt with a sealing ring, comprising a bolt body 1, which consists of a bolt head 2 and a screw 3. The screw 3 is located at the center of the bottom of the bolt head 2. The upper part of the screw 3 is configured as a non-threaded section 4. The outer wall of the non-threaded section 4 is provided with a first annular groove 7. The inner wall of the first annular groove 7 is provided with reserved holes 8 on both sides and at both ends. A first spring 9 is installed inside the reserved holes 8. A sealing block 10 is installed at the other end of the first spring 9. The other end of the sealing block 10 passes through the reserved holes 8 and is fitted with a first sealing ring 13. The first sealing ring 13 is located inside the first annular groove 7. A second sealing ring 14 is installed on the outer wall of the first sealing ring 13. Please refer to [link to relevant documentation]. Figure 2 The lower part of the second sealing ring 14 is set to be conical, and the diameter of the bottom ring of the second sealing ring 14 is smaller than the diameter of the top ring of the second sealing ring 14. When the screw 3 is inserted into the connector hole, the tapered design at the bottom of the second sealing ring 14 allows it to enter the connector hole along with the screw 3. At this time, the second sealing ring 14 contacts the hole wall, and the hole wall pushes the second sealing ring 14 and the first sealing ring 13 back, so that the second sealing ring 14 fits against the outer wall of the screw 3, and the first sealing ring 13 fits against the inner wall of the first annular groove 7, and drives the sealing block 10 to move into the reserved hole 8 to seal the reserved hole 8. The first sealing ring 13 and the second sealing ring 14 can fill the gap between the screw 3 and the connector hole, thereby providing a waterproof effect for the bolt body 1. The inward movement of the sealing block 10 can compress the first spring 9, causing the first spring 9 to generate an outward rebound force, thereby increasing the connection between the second sealing ring 14 and the connector hole, improving the fastening effect of the bolt body 1, preventing rotation, and forming a dynamic compensation sealing ring, so that the sealing pressure remains stable even if there are machining errors or vibration deformation in the hole wall. A second annular groove 15 is provided at the connection between the outer wall of the screw 3 and the bolt head 2. A third sealing ring 16 is installed inside the second annular groove 15. The cross-sectional shape of the third sealing ring 16 is inverted L-shaped. Please refer to [link / reference]. Figure 2 A flat washer 17 is connected to the outer wall of the upper part of the third sealing ring 16. A third annular groove 18 is provided at the bottom of the bolt head 2. The top of the flat washer 17 is located inside the third annular groove 18 and is glued to the inner top of the third annular groove 18. The vertical arm of the third sealing ring 16 presses against the surface of the connector, and the horizontal arm fits against the side wall of the second annular groove 15, preventing water from climbing up the screw 3, thereby further providing a waterproof effect for the bolt body 1. The top of the flat washer 17 is glued in the third annular groove 18, and the bottom presses against the connector, which can eliminate microscopic gaps between the bolt head 2 and the connector, improve the fastening effect between the bolt body 1 and the connector, and also prevent the bolt body 1 from rotating. Please refer to [link to relevant documentation]. Figure 3 The bolt head 2 has an internal groove 19, a hexagonal retaining groove 20 at its bottom, and a through hole 21 at its top, which communicates with the internal groove 19. (See also...) Figure 3 and Figure 4 The inner groove 19 has two sides and two ends equipped with second springs 22. The other end of the second spring 22 is equipped with a clamping block 23. The upper part of the other end of the clamping block 23 is set as an inclined surface 24, and the lower part of the other end of the clamping block 23 is set as a vertical surface 25. The second spring 22 has a telescopic rod 26 installed inside. When installing or removing the bolt body 1, a hexagonal wrench needs to be inserted into the through hole 21. During the insertion process, the wrench compresses the second spring 22 through the inclined surface 24, so that the wrench head passes through the inner groove 19 and is locked into the hexagonal slot 20. By rotating the wrench, the bolt body 1 can be rotated forward or backward, thereby installing or removing the bolt body 1. The second spring 22, the clamping block 23 and the vertical surface 25 cooperate to fix and clamp the wrench, improve the connection effect between the wrench and the bolt body 1, and prevent the wrench from slipping.

[0023] Please see Figure 2 The lower part of the screw 3 is configured as a threaded section 5, and the outer wall of the threaded section 5 is provided with a threaded groove 6. The threaded groove 6 engages with the internal thread of the nut or screw hole, and the rotational motion is converted into axial tension through the mechanical principle of the helical inclined plane, so as to realize the clamping of the connecting parts.

[0024] Please see Figure 3 A fixed sleeve 11 is installed inside the first spring 9. One end of the fixed sleeve 11 is fixedly connected to the inner wall of the reserved hole 8, and the other end of the fixed sleeve 11 is movably connected to a movable column 12. The other end of the movable column 12 is fixedly connected to the sealing block 10. Through the combined action of the fixed sleeve 11 and the movable column 12, the stretching and compression directions of the first spring 9 are restricted, so that the first spring 9 always remains horizontal, and drives the sealing block 10 to move horizontally. The horizontal movement of the sealing block 10 ensures the sealing effect of the sealing block 10 on the reserved hole 8 and improves the waterproof performance of the bolt body 1.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A waterproof fastening bolt with a sealing ring, comprising a bolt body (1), characterized in that: The bolt body (1) consists of a bolt head (2) and a screw (3). The screw (3) is located at the center of the bottom of the bolt head (2). The upper part of the screw (3) is configured as a non-threaded section (4). The outer wall of the non-threaded section (4) is provided with a first annular groove (7). The inner wall of the first annular groove (7) is provided with reserved holes (8) on both sides and at both ends. A first spring (9) is installed inside the reserved hole (8). A sealing block (10) is installed at the other end of the first spring (9). The other end of the sealing block (10) is fitted with a first sealing ring (13) through the reserved hole (8). The first sealing ring (13) is located inside the first annular groove (7). A second sealing ring (14) is installed on the outer wall of the first sealing ring (13). A second annular groove (15) is provided at the connection between the outer wall of the screw (3) and the bolt head (2). A third sealing ring (16) is installed inside the second annular groove (15). The cross-sectional shape of the third sealing ring (16) is an inverted L shape.

2. The waterproof fastening bolt with a sealing ring according to claim 1, characterized in that: The lower part of the screw (3) is configured as a threaded section (5), and the outer wall of the threaded section (5) is provided with a threaded groove (6).

3. The waterproof fastening bolt with a sealing ring according to claim 1, characterized in that: A fixed sleeve (11) is installed inside the first spring (9). One end of the fixed sleeve (11) is fixedly connected to the inner wall of the reserved hole (8). The other end of the fixed sleeve (11) is movably connected to a movable column (12). The other end of the movable column (12) is fixedly connected to the sealing block (10).

4. A waterproof fastening bolt with a sealing ring according to claim 1, characterized in that: The lower part of the second sealing ring (14) is set to be conical, and the diameter of the bottom ring of the second sealing ring (14) is smaller than the diameter of the top ring of the second sealing ring (14).

5. A waterproof fastening bolt with a sealing ring according to claim 1, characterized in that: A flat washer (17) is connected to the outer wall of the upper part of the third sealing ring (16). A third annular groove (18) is provided at the bottom of the bolt head (2). The top of the flat washer (17) is located inside the third annular groove (18) and is glued to the inner top of the third annular groove (18).

6. A waterproof fastening bolt with a sealing ring according to claim 1, characterized in that: The bolt head (2) has an internal groove (19) and a hexagonal slot (20) at the bottom. The bolt head (2) has a through hole (21) at the top, and the through hole (21) is connected to the internal groove (19).

7. A waterproof fastening bolt with a sealing ring according to claim 6, characterized in that: A second spring (22) is installed on both sides and both ends inside the built-in groove (19). A clamping block (23) is installed on the other end of the second spring (22). The upper part of the other end of the clamping block (23) is set as an inclined surface (24), and the lower part of the other end of the clamping block (23) is set as a vertical surface (25). A telescopic rod (26) is installed inside the second spring (22).

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