Rust-proof bolt for vehicle

Abstract

The rust-proof bolt for the vehicle comprises a screw rod and a screw cap, a first annular groove is formed in the side wall of the screw cap in the axis direction of the screw rod, a first oil inlet is formed in the side wall of the first annular groove, a second oil inlet communicated with the first oil inlet is formed in the screw rod, and a second oil inlet communicated with the second oil inlet is formed in the screw cap. A plurality of oil outlet channels communicated with the second oil inlet are formed in the outer wall of the screw rod, a tubular part is connected into the first annular groove in a sliding mode, and when the screw rod is connected with a component of the vehicle, the tubular part abuts against the component of the vehicle through a nut so that the tubular part can shield the second oil inlet. The bolt has the characteristics of convenience in oiling and rust prevention.

Description

Technical Field

[0001] This utility model relates to the field of fasteners, and in particular to a rust-proof bolt for automobiles. Background Technology

[0002] Bolts are common fasteners, frequently used in automobile manufacturing. After a period of use, cars require maintenance and repair. This process often involves removing bolts between components. For large vehicles like trucks, bolts mounted on the undercarriage are more susceptible to corrosion from environmental factors, making them difficult to remove.

[0003] Chinese patent CN221942929U discloses a bolt designed for easy lubrication. It achieves rust prevention by adding lubricating oil into an oil injection hole, allowing the oil to enter between the bolt and the connected components. However, the oil injection hole is only covered by a rotating baffle. During vehicle operation, the baffle can easily deflect, exposing the oil injection hole. This allows lubricating oil to flow back out of the bolt and moisture to more easily penetrate the oil injection hole and corrode the bolt's threads, leading to rust. Utility Model Content

[0004] This application provides a rust-proof bolt for automobiles, which is convenient for oiling and prevents rusting.

[0005] This application provides a rust-proof bolt for automobiles, which adopts the following technical solution:

[0006] A type of automotive anti-rust bolt includes a screw and a nut. A first annular groove is formed on the side wall of the nut along the axial direction of the screw. An oil inlet is formed on the side wall of the first annular groove. An oil inlet is formed on the screw and communicates with the first oil inlet. Multiple oil outlet channels are formed on the outer wall of the screw, all of which communicate with the second oil inlet. A tubular component is slidably connected in the first annular groove. When the screw is connected to a vehicle component, the nut presses the tubular component against the vehicle component, causing the tubular component to block the second oil inlet.

[0007] By adopting the above technical solution, the tubular component can stably block the oil inlet when the bolt is mated with the vehicle parts, thereby preventing the backflow of lubricating oil into the bolt and the entry of external moisture into the bolt, thus giving the bolt excellent rust prevention performance.

[0008] Preferably, a sealing plate is provided on one end of the tubular component near the screw. The sealing plate is sleeved on the screw. When the screw is connected to a vehicle component, the nut presses the sealing ring against the vehicle component, causing the sealing ring to deform under pressure.

[0009] By adopting the above technical solution, the sealing plate can prevent moisture corrosion of the bolt. At the same time, the sealing plate can reduce the probability of bolt loosening and improve the stability of the bolt connection.

[0010] Preferably, the nut has a second annular groove on its end face facing the screw, and a spring is provided in the second annular groove. One end of the spring is connected to the nut, and the other end of the spring is connected to the sealing plate. When the nut presses the sealing ring against the vehicle component, the spring is completely located in the second annular groove and is under compression.

[0011] By adopting the above technical solution, when the bolt needs to be lubricated, tightening the bolt causes it to move away from the vehicle's components. During this process, the spring will rebound and push the sealing plate and tubular component to slide away from the nut, so that the tubular component no longer blocks the oil inlet, and there is no need to manually push the tubular component.

[0012] Preferably, a third annular groove is formed on the side wall of the first annular groove away from the screw, and an annular insert is provided on the tubular component. The annular insert is inserted into the third annular groove, and the insert is located in the slot when the nut presses the tubular component against the vehicle component.

[0013] By adopting the above technical solution, the sealing performance of the oil inlet is improved.

[0014] Preferably, a sealing ring is provided in the third annular groove. When the nut presses the tubular part against the vehicle component, the insert block presses against the sealing ring and causes the sealing ring to deform under force.

[0015] By adopting the above technical solutions, the sealing performance can be further improved.

[0016] Preferably, the end face of the nut away from the screw is provided with a slot, and a warning groove is provided on the side wall of the nut. The warning groove is directly opposite the oil inlet and is connected to one side opening of the slot.

[0017] By adopting the above technical solution, it is convenient to rotate the bolt, and also to locate the oil inlet of the trapezoidal technician.

[0018] Preferably, the warning groove has an installation groove on its groove wall, a paddle is slidably connected in the installation groove, and an L-shaped locking block is provided at the end of the paddle, which is engaged in the slot and the warning groove.

[0019] By adopting the above technical solution, when a flathead screwdriver is not available, the clip can be pulled out to remove the lever from the mounting slot, and then the lever can be rotated to rotate the bolt.

[0020] Preferably, the lever has a limiting groove, and the nut is threaded with a screw, the axis of which is perpendicular to the axis of the screw rod, and the screw extends into the limiting groove.

[0021] By adopting the above technical solution, the paddle can be prevented from falling off the bolt.

[0022] The main technical effects of this utility model are reflected in the following aspects:

[0023] 1. This utility model uses a tubular component to effectively seal the oil inlet, which facilitates oiling the bolts while ensuring their rust prevention performance.

[0024] 2. The sealing sheet in this utility model can prevent moisture from corroding the screw;

[0025] 3. This utility model is equipped with a lever so that technicians can turn the bolts even without a flathead screwdriver. Attached Figure Description

[0026] Figure 1 This is a structural diagram showing the fit between the bolts of this application and vehicle components.

[0027] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0028] Attached reference numerals: 1. Screw; 11. Oil inlet 2; 12. Oil outlet channel; 2. Nut; 21. First annular groove; 22. Oil inlet 1; 23. Second annular groove; 24. Third annular groove; 25. Sealing ring; 26. Slotted groove; 27. Warning groove; 28. Mounting groove; 3. Tubular component; 31. Sealing plate; 32. Insert block; 4. Spring; 5. Paddle; 51. Limiting groove; 6. Locking block; 7. Screw. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 and appendix Figure 2 This application will be described in further detail to make the technical solution of this application easier to understand and master.

[0030] This embodiment of an anti-rust bolt for vehicles includes a screw 1 and a nut 2. A first annular groove 21 is formed on the side wall of the nut 2 along the axial direction of the screw 1, and an oil inlet 22 is formed on the side wall of the first annular groove 21. An oil inlet 11 connected to the first oil inlet 22 is formed on the screw 1, and a plurality of oil outlet channels 12 connected to the second oil inlet 11 are formed on the outer wall of the screw 1.

[0031] A tubular component 3 is slidably connected within the first annular groove 21 along the length of the screw 1. A sealing plate 31 is provided on the end of the tubular component 3 near the screw 1, and the sealing plate 31 is fitted onto the screw 1. A second annular groove 23 is formed on the end face of the nut 2 facing the screw 1, and a spring 4 is provided within the second annular groove 23. One end of the spring 4 is connected to the nut 2, and the other end of the spring 4 is connected to the sealing plate 31. A third annular groove 24 is formed on the side wall of the first annular groove 21 away from the screw 1. An annular insert 32 is provided on the tubular component 3, and the annular insert 32 is inserted into the third annular groove 24. A sealing ring 25 is placed within the third annular groove 24.

[0032] When screw 1 is connected to a vehicle component, nut 2 presses the tubular component 3 against the vehicle component, causing the tubular component 3 to block the oil inlet 11; at this time, nut 2 presses the sealing ring 25 against the vehicle component, causing the sealing ring 25 to deform under pressure. Spring 4 is completely located within the second annular groove 23 and is in a compressed state; insert block 32 is inserted into the slot and presses against the sealing ring 25, causing the sealing ring 25 to deform under pressure.

[0033] When the bolt needs lubrication, tightening the bolt causes it to move away from the vehicle's components. During this process, the spring 4 will rebound and push the sealing plate 31 and the tubular component 3 to slide away from the nut 2, so that the tubular component 3 no longer blocks the oil inlet 22, and there is no need to manually push the tubular component 3.

[0034] A slot 26 is provided on the end face of the nut 2 away from the screw 1. A warning groove 27 is provided on the side wall of the nut 2, which is directly opposite the oil inlet 22. The warning groove 27 is connected to one side opening of the slot 26. An installation groove 28 is provided on the groove wall of the warning groove 27. A lever 5 is slidably connected in the installation groove 28 in a direction perpendicular to the screw 1. An L-shaped locking block 6 is fixed to the end of the lever 5. The locking block 6 is engaged in the slot 26 and the warning groove 27.

[0035] The lever 5 has a limiting groove 51, and the nut 2 is threaded with a screw 7. The axis of the screw 7 is perpendicular to the axis of the screw 1, and the screw 7 extends into the limiting groove 51. When it is necessary to unscrew the bolt but there is no flathead screwdriver, the clip 6 can be pulled out to pull the lever 5 out of the mounting slot 28, and then the lever 5 can be rotated to rotate the bolt.

[0036] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.

Claims

1. A rust-proof bolt for automobiles, comprising a bolt (1) and a nut (2), characterized in that: The nut (2) has a first annular groove (21) on its side wall along the axis of the screw (1). The first annular groove (21) has an oil inlet (22) on its side wall. The screw (1) has an oil inlet (11) connected to the oil inlet (22). The screw (1) has multiple oil outlet channels (12) on its outer wall that are all connected to the oil inlet (11). A tubular component (3) is slidably connected in the first annular groove (21). When the screw (1) is connected to a vehicle component, the nut (2) presses the tubular component (3) against the vehicle component, so that the tubular component (3) blocks the oil inlet (11).

2. The automotive anti-rust bolt according to claim 1, characterized in that: The tubular component (3) has a sealing plate (31) at one end near the screw (1). The sealing plate (31) is sleeved on the screw (1). When the screw (1) is connected to the vehicle component, the nut (2) presses the sealing ring (25) against the vehicle component, causing the sealing ring (25) to be deformed by pressure.

3. The automotive anti-rust bolt according to claim 2, characterized in that: The nut (2) has a second annular groove (23) on its end face facing the screw (1). A spring (4) is provided in the second annular groove (23). One end of the spring (4) is connected to the nut (2), and the other end of the spring (4) is connected to the sealing plate (31). When the nut (2) presses the sealing ring (25) against the vehicle component, the spring (4) is completely located in the second annular groove (23) and is under compression.

4. The automotive anti-rust bolt according to claim 3, characterized in that: A third annular groove (24) is provided on the side wall of the first annular groove (21) away from the screw (1). An annular insert (32) is provided on the tubular component (3). The annular insert (32) is inserted into the third annular groove (24). When the nut (2) presses the tubular component (3) against the vehicle component, the insert (32) is located in the slot.

5. The automotive anti-rust bolt according to claim 4, characterized in that: The third annular groove (24) is provided with a sealing ring (25). When the nut (2) presses the tubular part (3) against the vehicle component, the insert (32) presses against the sealing ring (25) and causes the sealing ring (25) to deform under force.

6. The automotive anti-rust bolt according to claim 1, characterized in that: The end face of the nut (2) away from the screw (1) is provided with a slot (26), and a warning groove (27) is provided on the side wall of the nut (2). The warning groove (27) is directly opposite the oil inlet (22), and the warning groove (27) is connected to one side of the slot (26).

7. A rust-proof bolt for automobiles according to claim 6, characterized in that: The warning groove (27) has an installation groove (28) on its groove wall. A paddle (5) is slidably connected in the installation groove (28). An L-shaped locking block (6) is provided at the end of the paddle (5). The locking block (6) is engaged in the slot (26) and the warning groove (27).

8. A rust-proof bolt for automobiles according to claim 7, characterized in that: The lever (5) has a limiting groove (51), and the nut (2) is threaded with a screw (7). The axis of the screw (7) is perpendicular to the axis of the screw rod (1), and the screw (7) extends into the limiting groove (51).

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