CN-121987014-A - Safety belt hasp adaptation spring bolt misplug prevention structure and corresponding hasp, spring bolt

CN121987014ACN 121987014 ACN121987014 ACN 121987014ACN-121987014-A

Abstract

The embodiment of the invention discloses a safety belt lock catch adaptive lock tongue misplug prevention structure and a corresponding lock catch and lock tongue, which are characterized in that: a limiting mechanism protruding into the cross section of the passage is arranged in the passage of the lock catch, and a yielding mechanism for the limiting mechanism to pass through is arranged on the surface of the lock tongue inserting part of the lock tongue. When the non-adaptive lock tongue is inserted, the limiting mechanism cannot be embedded into the yielding mechanism, or the yielding mechanism is not used for the limiting mechanism to pass through, so that the lock tongue inserting part and the limiting mechanism are in rigid conflict, and further insertion is prevented. The invention realizes mutual misplug prevention among a plurality of locks through a pure mechanical structure, ensures that the safety belt is correctly worn, has reliable protection efficiency, and has simple structure without electronic components.

Inventors

LI JIAN
WANG CHUANXU
YANG YANPING
GUO CHONG
SONG XIBIN
ZHUANG ZHE

Assignees

沈阳金杯锦恒汽车安全系统有限公司

Dates

Publication Date: 20260508
Application Date: 20260213

Claims (9)

1. The utility model provides a safety belt hasp adaptation spring bolt mistake proofing inserts structure, includes hasp and spring bolt, the spring bolt includes spring bolt grafting portion, the hasp is equipped with the passageway that supplies the spring bolt male, its characterized in that, be provided with in the passageway to protruding stop gear in the cross section of passageway, the surface of spring bolt grafting portion is equipped with the confession stop gear passes through give way the mechanism.
2. The safety belt buckle adaptive lock tongue misplug prevention structure of claim 1, wherein the buckle is further provided with a groove-shaped seat positioned in the channel, the groove-shaped seat comprises a rear side plate, a left side plate and a right side plate positioned on the left side and the right side of the rear side plate, the limiting mechanism is a rigid bump, at least one bottom bump is arranged on the front side wall of the rear side plate, one side bump is respectively arranged on the right side wall of the left side plate and the left side wall of the right side plate, the two side bumps are symmetrically distributed left and right, the bottom bump and the side bump are close to the entrance of the channel, the distance between the two side bumps is smaller than the width of the lock tongue inserting portion, the distance between the rearmost boundary of the side bump and the rear side plate is larger than the thickness of the lock tongue inserting portion, the distance between the rearmost boundary of the side bump and the rear side plate is smaller than the sum of the thickness of the lock tongue inserting portion and the height of the bottom bump, and the yield mechanism is of a groove-shaped structure, and the groove-shaped structure is formed by arranging one side bump and the bottom bump of the lock tongue to pass through the groove.
3. The seatbelt buckle-fitting tongue misplug prevention structure according to claim 2, wherein the bottom bump is single and is provided at the center of the rear side plate in the width direction.
4. The error-insertion-preventing structure for a locking tongue of a safety belt buckle according to claim 2, wherein the lateral protruding points are elliptical protruding points, and are obliquely arranged in a shape that the upper ends are forward and the lower ends are backward.
5. The safety belt buckle-fitting lock tongue misplug prevention structure according to claim 2, wherein the lock tongue further comprises a hand-held part fixed at one end of the plug-in part far away from the strip-shaped groove, and the hand-held part is provided with a flat opening through which the webbing passes.
6. A safety belt lock catch for the safety belt lock catch adapting lock tongue misplug prevention structure according to any one of claims 1-5 is characterized in that the safety belt lock catch is provided with a channel for inserting the lock tongue, and a limiting mechanism protruding into the cross section of the channel is arranged in the channel.
7. The belt buckle according to claim 6, wherein the belt buckle is further provided with a groove-shaped seat positioned in the channel, the groove-shaped seat comprises a rear side plate, a left side plate and a right side plate positioned on the left side and the right side of the rear side plate, wherein the limiting mechanism is a rigid bump, the front side wall of the rear side plate is provided with at least one bottom bump, the right side wall of the left side plate and the left side wall of the right side plate are respectively provided with a side bump, the two side bumps are distributed in bilateral symmetry, the bottom bump and the side bump are close to the entrance of the channel, the distance between the two side bumps is smaller than the width of the inserting part of the standard bolt, the distance between the rearmost side boundary of the side bumps and the rear side plate is larger than the thickness of the inserting part of the standard bolt, and the distance between the rearmost side boundary of the side bumps and the rear side plate is smaller than the sum of the thickness of the inserting part of the standard bolt and the height of the bottom bump.
8. A safety belt lock tongue for the safety belt lock catch adapting lock tongue misplug prevention structure according to any one of claims 1-5, which is characterized in that the safety belt lock tongue comprises a lock tongue inserting part, and a abdication mechanism for a limiting mechanism to pass through is arranged on the surface of the lock tongue inserting part.
9. The belt lock tongue according to claim 8, wherein the yielding mechanism is a rigid bump, wherein a strip-shaped groove is provided on a side surface of the tongue insertion portion, and the strip-shaped groove is configured in position, shape and depth such that, when the tongue insertion portion is inserted into the adapted belt lock, the strip-shaped groove can accommodate a bottom bump of the belt lock and pass the bottom bump smoothly, and pass the tongue insertion portion smoothly through restriction of a side bump of the belt lock.

Description

Safety belt hasp adaptation spring bolt misplug prevention structure and corresponding hasp, spring bolt Technical Field The embodiment of the invention relates to the technical field of passive safety of automobiles, in particular to a safety belt lock catch adaptive lock tongue misplug prevention structure, a corresponding lock catch and a corresponding lock tongue. Background Automotive belts are one of the most basic and important passive safety devices in vehicles. In passenger vehicles, in particular in motor homes, the rear row is usually provided with two or three seats, respectively equipped with two or three seat belt buckles (buckles) and corresponding locking tongues. Currently, the seat belt buckle and the lock tongue of most rear seats of automobiles in the market adopt uniform standard structures and sizes (shown in fig. 4, the buckle 10 and the lock tongue 20). This design, while reducing manufacturing costs and assembly complexity, also presents a significant safety hazard in that, due to the complete consistency of the profiles of all the bolts and catches, the rear seat occupant is very prone to misinsertion of the bolts into catches other than the seat, such as inserting the bolts of the left seat into the catches of the middle seat, while wearing the seat belt. Such "misplug" action can result in unintended changes in the webbing orientation of the seat belt, causing the restraint direction of the seat belt to the body to deviate from the ideal direction preset by the engineer. When a collision accident occurs to the vehicle, the restraint performance of the safety belt in the wrong direction on the human body is greatly attenuated, so that the safety belt cannot exert the maximum protection function according to the preset protection logic when the accident occurs, and the personal safety of passengers is difficult to effectively guarantee. Further, with the emphasis on the safety of the middle seats in the rear row, some vehicle models are beginning to equip the middle seats in the rear row with independent belt bolts (so-called "third locks"). However, the existing safety belt mutual protection logic is generally only designed to support mutual protection between two locks (such as left and right seats), and cannot effectively adapt to the situation that three locks exist simultaneously or are dynamically used (such as any two locks are enabled). The newly added third lock tongue lacks a structure identification and error prevention mechanism with the original lock catch, so that the third lock tongue can be inserted in error or can not be inserted due to incompatibility, and the flexibility and the safety of the configuration of the safety belt system are limited. Some error protection schemes also exist in the prior art, such as electronic sensor identification, RFID tag matching, etc. These solutions increase the complexity, cost and failure rate of the system and their reliability can be challenging in harsh automotive use environments. Disclosure of Invention Therefore, the embodiment of the invention provides a safety belt lock catch adaptive lock tongue misplug prevention structure and corresponding lock catches and lock tongues, so as to solve one or more of the technical problems. In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: The invention provides a safety belt lock catch adaptive lock tongue misplug prevention structure, which comprises a lock catch and a lock tongue, wherein the lock tongue comprises a lock tongue inserting part, and the lock catch is provided with a channel for inserting the lock tongue. The lock catch is characterized in that the lock catch is further provided with a groove-shaped seat positioned in the channel, the groove-shaped seat comprises a rear side plate, a left side plate and a right side plate which are positioned on the left side and the right side of the rear side plate, the limiting mechanism is a rigid bump, at least one bottom bump is arranged on the front side wall of the rear side plate, one side bump is respectively arranged on the right side wall of the left side plate and the left side wall of the right side plate, the two side bumps are distributed symmetrically left and right, the bottom bump and the side bump are both close to the entrance of the channel, the distance between the two side bumps is smaller than the width of the bolt inserting portion, the distance between the rearmost boundary of the side bump and the rear side plate is larger than the thickness of the bolt inserting portion, the distance between the rearmost boundary of the side bump and the rear side plate is smaller than the sum of the thickness of the bolt inserting portion and the height of the bottom bump, and the yielding mechanism is of a groove-shaped structure, and one side surface of the bolt inserting portion is provided with a groove for the bottom to pass through. Further, the