A seat belt buckle and seat belt assembly

CN224504831UActive Publication Date: 2026-07-17CHANGZHOU JUNULTIMA ELECTRONIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU JUNULTIMA ELECTRONIC TECH CO LTD
Filing Date
2025-04-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing seat belt buckles are prone to loosening under heavy tension and are not securely locked, making seat belt use inconvenient.

Method used

A seatbelt buckle was designed, comprising housing one and housing two. A locking mechanism was set up to lock the take-up roller by meshing an internal toothed ring and a gear, preventing the take-up roller from loosening. The take-up roller was limited and fixed by a drive mechanism and a spring.

Benefits of technology

It improves the safety of the seat belt, prevents the belt from slipping when subjected to excessive force, ensures a secure lock, and avoids loosening of the take-up roller.

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    Figure CN224504831U_ABST
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Abstract

The utility model discloses a safety belt buckle and safety belt assembly, including casing one and casing two, casing one with the one side of casing two is connected through the body, the one side of casing two is equipped with the connecting plate close to casing one, the one side of casing one is equipped with the connecting groove that is matched with the connecting plate close to casing two, casing one one side is equipped with the hand screw bolt of extending to the connecting groove, the one side of connecting plate is equipped with the thread groove that is matched with the hand screw bolt, be equipped with the pivot in casing two, the outer wall fixed cover of pivot is equipped with the winding roller. Advantageous effects: through setting up locking mechanism can be positioned fixed to winding roller, and then prevent the sliding phenomenon of the body of force too big, further improve its security, and locking mechanism is locked through the meshing of inner tooth ring and gear, and its locking is firm to avoid the loosening of winding roller.
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Claims

1. A seat belt buckle, characterized by The device includes a housing 1 (1) and a housing 2 (2). The housing 1 (1) and the housing 2 (2) are connected by a belt (3) on opposite sides. The housing 2 (2) has a connecting plate (4) on the side near the housing 1 (1). The housing 1 (1) has a connecting groove (5) that matches the connecting plate (4) on the side near the housing 2 (2). The housing 1 (1) has a hand-tightening bolt (18) extending into the connecting groove (5) on one side. The connecting plate (4) has a threaded groove (7) that matches the hand-tightening bolt (18) on one side. The housing 2 (2) has a rotating shaft (6). The rotating shaft (6) has a winding roller (8) fixedly sleeved on its outer wall. One end of the belt (3) extends into the housing 2 (2) and connects to the winding roller (8). The bottom end of the rotating shaft (6) extends out of the housing 2 (2) and connects to the drive mechanism. The top end of the rotating shaft (6) extends out of the housing 2 (2) and connects to the locking mechanism.

2. A seat belt buckle according to claim 1, wherein The driving mechanism includes a protective box (9) at the bottom of the housing (2), a drive shaft (12) is provided in the protective box (9), and a spring (22) is sleeved on the outer wall of the protective box (9) and located on the drive shaft (12). One end of the spring (22) is connected to the drive shaft (12), and the end of the spring (22) away from the drive shaft (12) is connected to the protective box (9). The bottom end of the rotating shaft (6) extends into the protective box (9) and is connected to the drive shaft (12).

3. A seat belt buckle according to claim 2, wherein The locking mechanism includes a protective box (13) at the top of the housing (2), a pull plate (14) at the top of the protective box (13), and symmetrically arranged pull rods (15) at the bottom of the pull plate (14). The bottom ends of the two sets of pull rods (15) extend into the protective box (13) and are connected to the internal gear ring (16). A spring (17) is sleeved in the protective box (13) and on the outer wall of the pull rod (15). The top of the rotating shaft (6) extends into the protective box (13) and is connected to the gear (19) that meshes with the internal gear ring (16).

4. A seat belt buckle according to claim 3, wherein The top of the housing (2) is provided with a sliding hole that matches the pull rod (15).

5. A seat belt buckle according to claim 4, wherein The top of the pull plate (14) is provided with a turntable (20), and the outer wall of the turntable (20) is provided with symmetrically arranged support blocks (21). The top of the second protective box (13) and located on both sides of the pull plate (14) are provided with symmetrically arranged support columns (10). The two sets of support columns (10) are provided with support grooves (11) that match the support blocks (21) on the side closest to each other.

6. A seat belt assembly characterized by, Includes the seatbelt buckle as described in any one of claims 1 to 5.