Anti-loosening device of safety belt

Abstract

The utility model relates to the technical field of safety belts, in particular to a safety belt anti-loosening device which comprises a mounting base, a connecting clamp and a fastening bolt, an annular limiting groove is formed in the outer surface of the fastening bolt, first guide cylinders are symmetrically arranged on the upper surface of the mounting base and located at the two ends of the fastening bolt, and limiting rods are movably arranged on the first guide cylinders. A first driving assembly is arranged in the first guide cylinder, a second guide cylinder is vertically arranged at the end, away from the fastening bolt, of the first guide cylinder, the end, away from the fastening bolt, of the limiting rod penetrates through the first guide cylinder and the second guide cylinder and extends to the outside of the second guide cylinder, and a first locking hole is formed in the limiting rod. A locking rod is movably arranged on the second guide cylinder, a second driving assembly for driving the locking rod to enter the first locking hole is arranged in the second guide cylinder, the fastening bolt is not prone to rotating and loosening due to external force, installation is firmer, and stable and effective safety guarantee can be provided for a driver.

Description

Technical Field

[0001] This utility model belongs to the field of seat belt technology, specifically a seat belt anti-loosening device. Background Technology

[0002] Car seat belts are devices used in automobiles to restrain passengers and drivers in the event of a violent impact, preventing injury caused by impact inertia and other factors. Currently, most seat belt mounting bases are fixed to the vehicle using bolts. However, due to prolonged vehicle travel, significant bumps and vibrations occur. Bolts in conventional structures are susceptible to vibration and metal fatigue, leading to self-rotation and loosening, which reduces the stability of the connection. Therefore, it is necessary to prevent bolts from loosening due to external forces; otherwise, the seat belt will fail to provide safety for the driver. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a seat belt anti-loosening device to address the above-mentioned defects and solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a seat belt anti-loosening device includes a mounting base, a fixing component set on the mounting base, and a connecting clip set on the fixing component. A fastening bolt is provided on the upper surface of the mounting base. An annular limiting groove is opened on the outer surface of the fastening bolt. A first guide cylinder is symmetrically arranged at both ends of the fastening bolt on the upper surface of the mounting base. A limiting rod is movably arranged on the first guide cylinder. A first driving component is provided inside the first guide cylinder to drive the limiting rod into the annular limiting groove of the fastening bolt. A second guide cylinder is vertically arranged at the end of the first guide cylinder away from the fastening bolt. The end of the limiting rod away from the fastening bolt passes through the first guide cylinder and the second guide cylinder and extends to the outside of the second guide cylinder. A first locking hole is provided on the limiting rod inside the second guide cylinder. A locking rod matching the first locking hole is movably arranged on the second guide cylinder. A second driving component is provided inside the second guide cylinder to drive the locking rod into the first locking hole.

[0005] Furthermore, the first driving assembly includes a first groove formed on the inner wall of the first guide cylinder, a first slider sleeved on the limiting rod inside the first guide cylinder, and a first spring. One end of the first spring abuts against the side wall of the first slider, and the other end abuts against the inner side wall of the first groove. A first gripping part is provided on the limiting rod outside the second guide cylinder.

[0006] Furthermore, the first guide cylinder and the second guide cylinder are perpendicular to each other.

[0007] Furthermore, the second drive assembly includes a second sliding groove formed on the inner wall of the second guide cylinder, a second slider and a second spring sleeved on a locking rod inside the second guide cylinder, the top end of the locking rod passing through the second guide cylinder and extending to the top end of the second guide cylinder, and a second gripping part being provided on the locking rod at the top end of the second guide cylinder.

[0008] Furthermore, the connecting clip is equipped with a seat belt lock.

[0009] Furthermore, after the locking rod enters the first locking hole, the second slider abuts against the limiting rod.

[0010] Furthermore, a second locking hole is provided on the limiting rod inside the first guide cylinder, at the end of the limiting rod near the fastening bolt.

[0011] The beneficial effects of this utility model are:

[0012] This utility model utilizes a combination of an annular limiting groove, a first guide cylinder, a limiting rod, a first driving assembly, a second guide cylinder, a first locking hole, a locking rod, and a second driving assembly. After the fastening bolts are fixed, the first driving assembly drives the limiting rod to move horizontally, causing one end to enter the annular limiting groove, where the limiting rod abuts against the top and bottom ends of the groove. The second driving assembly drives one end of the locking rod into the first locking hole of the limiting rod, locking it and restricting its horizontal movement. Furthermore, the first and second driving assemblies consistently apply a pushing force to the limiting rod and the locking rod, causing the limiting rod to lock on the mounting base, thus restricting the axial movement of the fastening bolts. This prevents the fastening bolts from loosening due to external forces, making the installation more secure and providing stable and effective safety protection for the driver. Attached Figure Description

[0013] The foregoing and other objects, features and advantages of this invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0014] Figure 1 This is a side view of the present invention.

[0015] Figure 2 This is a cross-sectional view of the first guide cylinder and the second guide cylinder of this utility model.

[0016] Figure 3 This is a top view of the limiting rod structure of this utility model.

[0017] The components include: 1. Mounting base; 2. Fixing component; 3. Connecting clamp; 4. Fastening bolt; 401. Annular limiting groove; 5. First guide cylinder; 6. Limiting rod; 601. First locking hole; 602. Second locking hole; 7. First drive assembly; 701. First slide groove; 702. First slider; 703. First spring; 704. First grip; 8. Second guide cylinder; 9. Locking rod; 10. Second drive assembly; 1001. Second slide groove; 1002. Second slider; 1003. Second spring; 1004. Second grip; 11. Seat belt lock head. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Reference Figure 1-3 As shown, the seat belt anti-loosening device includes a mounting base 1, a fixing member 2 set on the mounting base 1, and a connecting clip 3 set on the fixing member 2. The connecting clip 3 is provided with a seat belt lock head 11. A fastening bolt 4 is provided on the upper surface of the mounting base 1. The fastening bolt 4 fixes the mounting base 1 to the vehicle. An annular limiting groove 401 is opened on the outer surface of the fastening bolt 4. On the upper surface of the mounting base 1, a first guide cylinder 5 is symmetrically arranged at both ends of the fastening bolt 4. A limiting rod 6 is movably arranged on the first guide cylinder 5. An arc-shaped clamping groove matching the annular limiting groove 401 is opened at one end of the limiting rod 6 near the annular limiting groove 401. A first driving component 7 is provided inside the first guide cylinder 5 to drive the limiting rod 6 into the annular limiting groove 401 of the fastening bolt 4. The first driving component 7 drives the limiting rod 6 to move horizontally, driving one end of the limiting rod 6 into the annular limiting groove 401, and the top and bottom ends of the limiting rod 6 abut against the top and bottom ends inside the annular limiting groove 401.

[0020] The first driving assembly 7 includes a first groove 701 formed on the inner wall of the first guide cylinder 5, a first slider 702 sleeved on the limiting rod 6 inside the first guide cylinder 7, and a first spring 703. One end of the first spring 703 abuts against the side wall of the first slider 702, and the other end abuts against the inner side wall of the first groove 701. A first gripping part 704 is provided on the limiting rod 6 outside the second guide cylinder 8. By pulling the gripping part 704, the limiting rod 6 is driven to move horizontally along the first guide cylinder 5, causing the first slider 702 to move horizontally along the first groove 701, and forming a force on the first spring 703. When compressed, the first spring 703 returns to its original position after the first grip 704 is released, causing the limiting rod 6 and the first slider 702 to move horizontally towards the annular limiting groove 401. This allows the limiting rod 6 to engage with the annular limiting groove 401, and the first spring 703 consistently applies a pushing force, ensuring that the limiting rod 6 firmly contacts the inner wall of the annular limiting groove 401. Since the limiting rod 6 can only move horizontally, it also restricts the axial movement of the fastening bolt 4, making it less prone to loosening due to external forces. This results in a more secure installation and provides stable and effective safety protection for the driver.

[0021] A second guide cylinder 8 is vertically mounted at the end of the first guide cylinder 5 furthest from the fastening bolt 4. The first guide cylinder 5 and the second guide cylinder 8 are perpendicular to each other. A limiting rod 6, at the end furthest from the fastening bolt 4, passes through the first guide cylinder 5 and the second guide cylinder 8, extending to the outside of the second guide cylinder 8. The limiting rod 6 can reciprocate horizontally along the first guide cylinder 5 and the second guide cylinder 8. A first locking hole 601 is provided on the limiting rod 6 inside the second guide cylinder 8. A locking rod 9, matching the first locking hole 601, is movably mounted on the second guide cylinder 8. The locking rod 9 reciprocates up and down along the first guide cylinder 8. A mechanism is provided inside the second guide cylinder 8 to drive the locking rod 9 into the first locking hole 601. After the limiting rod 6 and the annular limiting groove 401 are engaged, the side wall of the first gripping part 704 abuts against the side wall of the second guide cylinder 8, and the first locking hole 601 and the locking rod 9 are on the same straight line. The second driving component 10 drives the locking rod 9 to move downward and enter the first locking hole 601. The second driving component 10 always applies a pushing force so that after the locking rod 9 enters the first locking hole 601, the second slider 1002 abuts against the limiting rod 6, thereby restricting the horizontal movement of the limiting rod 6, making the limiting rod 6 more stable in limiting the fastening bolt 4, further restricting the axial movement of the fastening bolt 4, and making the installation more secure.

[0022] The second drive assembly 10 includes a second slide groove 1001 formed on the inner wall of the second guide cylinder 8, a second slider 1002 and a second spring 1003 sleeved on the locking rod 9 inside the second guide cylinder 8. The top end of the locking rod 9 passes through the second guide cylinder 8 and extends to the top end of the second guide cylinder 8. A second gripping part 1004 is provided on the locking rod 9 at the top end of the second guide cylinder 8. By pulling the second gripping part 1004, the locking rod 9 and the second slider 1002 are driven to move upward, so that the locking rod 9 is separated from the first locking hole 601, allowing the limiting rod 6 to move horizontally. When the second gripping part 1004 is released, the second spring 1003 returns to its original position, driving the locking rod 9 to move downward and enter the first locking hole 601 to lock the limiting rod 6, restricting its horizontal movement. The second spring 1004 always applies a pushing force to keep the locking rod 9 stably inside the first locking hole 601.

[0023] Inside the first guide cylinder 5, on the limiting rod 6, a second locking hole 602 is provided at the end of the limiting rod 6 near the fastening bolt 4. When it is necessary to install or remove the fastening bolt 4, the first gripping part 704 is pulled to drive one end of the limiting rod 6 into the first guide cylinder 5, so that the second locking hole 602 corresponds to the locking rod 9. The locking rod 9 enters the second locking hole 602, locking the limiting rod 6, so that one end of the limiting rod 6 is always inside the first guide cylinder 5, which facilitates the operation of the fastening bolt 4.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A safety belt anti-loosening device, comprising a mounting seat (1), a fixing member (2) arranged on the mounting seat (1), and a connecting clamp (3) arranged on the fixing member (2), a fastening bolt (4) being arranged on the upper surface of the mounting seat (1), characterized in that: The fastening bolt (4) is provided with an annular limiting groove (401) on the outer surface, the first guide cylinder (5) is symmetrically arranged on the upper surface of the mounting seat (1) and located at both ends of the fastening bolt (4), the limiting rod (6) is movably arranged on the first guide cylinder (5), the first driving assembly (7) is arranged in the first guide cylinder (5) and drives the limiting rod (6) to enter the annular limiting groove (401) of the fastening bolt (4), the second guide cylinder (8) is vertically arranged at the end of the first guide cylinder (5) away from the fastening bolt (4), the limiting rod (6) penetrates the first guide cylinder (5) and the second guide cylinder (8) and extends to the outside of the second guide cylinder (8) at the end away from the fastening bolt (4), the first locking hole (601) is arranged on the limiting rod (6) in the second guide cylinder (8), the locking rod (9) matched with the first locking hole (601) is movably arranged on the second guide cylinder (8), and the second driving assembly (10) is arranged in the second guide cylinder (8) and drives the locking rod (9) to enter the first locking hole (601).

2. The seat belt unfastening prevention device according to claim 1, characterized by: The first driving assembly (7) comprises a first sliding groove (701) formed on the inner wall of the first guide cylinder (5), a first sliding block (702) sleeved on the limiting rod (6) in the first guide cylinder (5) and a first spring (703), one end of the first spring (703) abuts against the side wall of the first sliding block (702), and the other end abuts against the inner side wall of the first sliding groove (701), and the first holding portion (704) is arranged on the limiting rod (6) outside the second guide cylinder (8).

3. The seat belt unfastening prevention device according to claim 1, characterized by: The first guide cylinder (5) and the second guide cylinder (8) are perpendicular to each other.

4. The seat belt unfastening prevention device according to claim 1, characterized by: The second driving assembly (10) comprises a second sliding groove (1001) formed on the inner wall of the second guide cylinder (8), a second sliding block (1002) sleeved on the locking rod (9) in the second guide cylinder (8) and a second spring (1003), the top end of the locking rod (9) penetrates the second guide cylinder (8) and extends to the top end of the second guide cylinder (8), and the second holding portion (1004) is arranged on the locking rod (9) at the top end of the second guide cylinder (8).

5. The seat belt unfastening prevention device according to claim 1, characterized by: The safety belt lock head (11) is arranged on the connecting clamp (3).

6. The seat belt unfastening prevention device according to claim 4, characterized by: After the locking rod (9) enters the first locking hole (601), the second sliding block (1002) abuts against the limiting rod (6).

7. The seat belt unfastening prevention device according to claim 1, characterized by: The second locking hole (602) is arranged on the limiting rod (6) in the first guide cylinder (5) and located at the end of the limiting rod (6) close to the fastening bolt (4). The second locking hole (602) is arranged on the limiting rod (6) in the first guide cylinder (5) and located at the end of the limiting rod (6) close to the fastening bolt (4).

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