Force limiting assembly for automobile back row lock catch

Abstract

The utility model provides a force limiting assembly for an automobile back row lock catch, and belongs to the technical field of automobile accessories. The problem that an existing force limiting assembly for the automobile back row lock catch is still not ideal in use safety is solved. The force limiting assembly for the automobile back row lock catch comprises a steel wire rope and a connecting seat, a roller is hinged to the connecting seat, the end of the steel wire rope is fixedly connected with the roller, the steel wire rope is wound on the roller and further provided with a connecting end extending out of the connecting seat, and the roller is provided with a crushing part which abuts against and is limited to the connecting seat to provide crushing buffering torque. The device has the advantages of being good in working stability, good in use safety and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle accessories and relates to a force limiting assembly, in particular to a force limiting assembly for a rear-row lock buckle of an automobile. Background Art

[0002] The force limiting assembly for the rear seat buckle of the car is used to connect the rear seat belt buckle of the car. It plays the role of providing a buffer torque. That is, when the car is in a traffic accident with emergency braking, the rear passengers will rush forward due to inertia. The force limiting assembly for the rear seat buckle of the car provides a buffer torque for the seat belt that is tightly clamped around the abdomen of the rear passengers, preventing the seat belt from causing damage to the abdomen of the rear passengers.

[0003] For example, Chinese patent literature discloses a force limiting device for a rear seat belt buckle of a car [application number: 202222857567.3; authorization announcement number: CN218112572U], which includes a fixing seat for being fixedly connected to the bottom plate of the car, and the opposite sides of the fixing seat have two connecting parts folded toward the same side, a latch is passed through the two connecting parts, a steel wire rope is passed through the fixing seat, one end of the steel wire rope is fixedly connected to the fixing seat, and the other end of the steel wire rope is used to connect the buckle, the steel wire rope also has a winding part with several turns wound around the latch, and a deformation member is provided between the winding part and the latch, which is supported by the winding part and can provide a buffering torque when the winding part is tightened.

[0004] The force limiting device of the rear seat belt buckle of the above-mentioned car can, to a certain extent, prevent the seat belt from being clamped around the abdomen of the rear occupants and causing injuries. However, the deformable parts are prone to displacement or separation from the force-bearing area during the force-bearing process, which will result in poor buffering torque provided and the possibility of causing abdominal injuries to the rear occupants. The safety of use is still not ideal. Summary of the invention

[0005] The utility model aims to solve the above problems existing in the prior art and provides a force limiting assembly for rear-seat locking buckles of automobiles with good working stability and good use safety.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a force limiting assembly for a rear seat lock of an automobile, comprising a wire rope and a connecting seat, characterized in that the connecting seat is hinged with a roller, the end of the wire rope is fixedly connected to the roller and the wire rope is wound around the roller, the wire rope also has a connecting end extending out of the connecting seat, and the roller has a crushing portion that abuts and is limited at the connecting seat to provide a crushing buffer torque.

[0007] In the above-mentioned force limiting assembly for rear-seat locking of a vehicle, the outer wall of the roller has a plane that contacts the inner wall of the connecting seat, and the outer wall of the roller in the area where the plane is located and the outer wall connected to the plane and away from the connecting end jointly form a crushing portion.

[0008] As another case, in the above-mentioned force-limiting assembly for the rear-row lock of an automobile, the crushing part is a crushing block that protrudes outward on the outer walls on both sides of the roller, and the inner wall of the connecting seat has a shoulder for the corresponding crushing block to abut against. When the crushing block abuts against the shoulder and the roller does not receive a torque force exceeding the set torque, the roller cannot rotate. When an emergency braking traffic accident occurs, the acting force of the steel wire rope drives the roller to rotate, and the crushing block deforms and crushes to provide a crushing buffer torque until the crushing block deforms and crushes and locks to the connecting seat, and the roller cannot rotate.

[0009] In the above-mentioned force-limiting assembly for the rear-row lock of an automobile, the roller is located between the two side parts of the connecting seat, and a pin shaft passes through the roller and the two side parts of the connecting seat.

[0010] In the above-mentioned force-limiting assembly for the rear-row lock of an automobile, the connecting seat is fixedly connected with a housing that covers the roller, and the connecting end extends out of the housing.

[0011] In the above-mentioned force-limiting assembly for the rear-row lock of an automobile, both ends of the steel wire rope are inserted into the roller and are fixedly connected with locking blocks at both ends. The roller has a receiving cavity for accommodating the locking blocks and for the locking blocks to abut against. The rope body of the steel wire rope passes through the roller, winds around the roller once and then extends out of the connecting seat to form a connecting end.

[0012] In the above-mentioned force-limiting assembly for the rear-row lock of an automobile, the connecting seat is fixedly connected with a limit seat. The limit seat has two first grooves. The housing abuts against the limit seat and the housing has two second grooves. The first groove and the corresponding second groove are butted to form a passing hole for the rope body of the steel wire rope to pass through.

[0013] In the above-mentioned force-limiting assembly for the rear-row lock of an automobile, both side parts of the connecting seat have flanges that extend to the end of the connecting seat and are integrally formed with the bottom of the connecting seat. The bottom of the connecting seat has a connecting hole.

[0014] Compared with the prior art, in this force-limiting assembly for the rear-row lock of an automobile, the roller does not have the problem of falling off. The crushing part completely bears the torque force generated during emergency braking and provides a crushing buffer torque. Therefore, there is no problem of buffer failure. This force-limiting assembly for the rear-row lock of an automobile has good working stability and good use safety. Description of the Drawings

[0015] Figure 1 is a three-dimensional structural diagram of this force-limiting assembly for the rear-row lock of an automobile.

[0016] Figure 2 is a three-dimensional structural diagram of this force-limiting assembly for the rear-row lock of an automobile with the housing and the steel wire rope removed.

[0017] Figure 3 is a structural sectional view of this force-limiting assembly for the rear-row lock of an automobile.

[0018] Figure 4 It is a structural sectional view of the force-limiting assembly for the rear-row lock of the vehicle, removing the housing and wire rope.

[0019] Figure 5 It is a three-dimensional structure diagram of the roller in the force-limiting assembly for the rear-row lock of the vehicle.

[0020] In the figure, 1 is the wire rope; 11 is the connection end; 2 is the connection seat; 21 is the flanging; 22 is the connection hole; 3 is the roller; 31 is the crushing part; 32 is the plane; 33 is the accommodation cavity; 4 is the pin shaft; 5 is the housing; 6 is the locking block; 7 is the limit seat; 71 is the first groove. Specific implementation mode

[0021] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0022] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, the force-limiting assembly for the rear-row lock of the vehicle includes a wire rope 1 and a connection seat 2. The connection seat 2 is hinged with a roller 3. The end of the wire rope 1 is fixedly connected to the roller 3 and the wire rope 1 is wound around the roller 3. The wire rope 1 also has a connection end 11 extending out of the connection seat 2. The roller 3 has a crushing part 31 that abuts against and is limited to the connection seat 2 to provide a crushing buffer moment.

[0023] When the force-limiting assembly for the rear-row lock of the vehicle is in use, the crushing part 31 abuts against and is limited to the connection seat 2. Therefore, when the roller 3 does not receive a torque exceeding the set torque, the roller 3 cannot rotate and the wire rope 1 will not extend outwards. This is the normal working state. When an emergency braking traffic accident occurs and the torque transmitted from the safety belt of the rear-row occupant to the lock exceeds the set torque, at this time, the crushing part 31 is crushed and deformed under force to provide a crushing buffer moment, the roller 3 rotates, and the wire rope 1 extends outwards, thereby avoiding the safety belt around the abdomen of the rear-row occupant from causing harm to the occupant until the crushing part 31 is deformed and crushed and locked to the connection seat 2, the roller 3 cannot rotate, the wire rope 1 cannot extend outwards, and the safety belt around the abdomen of the rear-row occupant plays a restraining role to protect the rear-row occupant; because the roller 3 does not have the problem of falling off, the crushing part 31 completely bears the torque generated during emergency braking and provides a crushing buffer moment, so there is no problem of buffer failure. The working stability of the force-limiting assembly for the rear-row lock of the vehicle is good and the use safety is good.

[0024] To elaborate further, in this embodiment, the outer wall of the roller 3 has a plane 32 that abuts against the inner wall of the connecting seat 2. The outer wall of the roller 3 in the area where the plane 32 is located and the outer wall that is connected to the plane 32 and away from the connecting end 11 together form a crushing portion 31. The plane 32 functions to abut against and be limited by the connecting seat 2. When the roller 3 is not subjected to a torque force exceeding the set torque, the roller 3 cannot rotate. When an emergency braking traffic accident occurs, the acting force of the steel wire rope 1 drives the roller 3 to rotate, and the crushing portion 31 deforms and crushes to provide a crushing buffer torque until the crushing portion 31 deforms and crushes and locks to the connecting seat 2, and the roller 3 cannot rotate. In this way, the structure is simple and convenient to manufacture.

[0025] The roller 3 is located between the two side portions of the connecting seat 2, and a pin shaft 4 passes through the roller 3 and the two side portions of the connecting seat 2. The roller 3 is hinged to the connecting seat 2 through the pin shaft 4, with a simple structure and convenient assembly.

[0026] The connecting seat 2 is fixedly connected with a housing 5 that covers the roller 3, and the connecting end 11 extends out of the housing 5. The housing 5 plays a protective role for the roller 3 and the steel wire rope 1, preventing impurities from causing corrosion of the roller 3 and the steel wire rope 1 and extending the service life. In this embodiment, both side portions of the connecting seat 2 have two grooves, and the two side walls of the housing 5 have insertion ends that are inserted into the corresponding grooves and have notches, thus realizing the fixed connection between the housing 5 and the connecting seat 2. Of course, in actual manufacturing, the housing 5 and the connecting seat 2 can be fixedly connected by screws.

[0027] Both ends of the steel wire rope 1 are inserted into the roller 3 and fixedly connected with locking blocks 6 at both ends. The roller 3 has a receiving cavity 33 for receiving the locking blocks 6 and for the locking blocks 6 to abut against. The rope body of the steel wire rope 1 passes through the roller 3, winds around the roller 3 once, and then extends out of the connecting seat 2 to form the connecting end 11. In this way, the connection between the steel wire rope 1 and the roller 3 is stable, and the working stability is good.

[0028] The connecting seat 2 is fixedly connected with a limit seat 7. The limit seat 7 has two grooves 71. The housing 5 abuts against the limit seat 7 and the housing 5 has two grooves. The groove 71 and the corresponding groove are butted to form a through hole for the rope body of the steel wire rope 1 to pass through. In this way, the rope body of the steel wire rope 1 is limited, and the steel wire rope 1 will not deflect during the working process. When an emergency braking traffic accident occurs, the steel wire rope 1 extends out smoothly, and the working stability is good. In this embodiment, the limit seat 7 is a plastic part and is press-fitted and clamped at the end of the connecting seat 2. The limit seat 7 is light in weight, reducing the overall weight of the force-limiting assembly for the rear-row lock of the vehicle.

[0029] Both side portions of the connecting seat 2 have flanges 21 that extend to the end of the connecting seat 2 and are integrally formed with the bottom of the connecting seat 2. The bottom of the connecting seat 2 has a connecting hole. In this way, the connecting seat 2 has high structural strength, and the connecting hole makes the connection convenient.

[0030] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A force limiting assembly for a rear-seat lock of an automobile, comprising a steel wire rope (1) and a connecting seat (2), characterized in that: The connecting seat (2) is hingedly connected to a roller (3), an end of the steel wire rope (1) is fixedly connected to the roller (3) and the steel wire rope (1) is wound around the roller (3), the steel wire rope (1) also has a connecting end (11) extending out of the connecting seat (2), and the roller (3) has a crushing portion (31) that contacts and is limited to the connecting seat (2) to provide a crushing buffer torque.

2. The force limiting assembly for rear-seat locking buckle of a vehicle according to claim 1, characterized in that: The outer wall of the roller (3) has a plane (32) that contacts the inner wall of the connecting seat (2), and the outer wall of the roller (3) in the area where the plane (32) is located and the outer wall connected to the plane (32) and away from the connecting end (11) jointly form a crushing portion (31).

3. The force limiting assembly for rear-seat locking buckle of a vehicle according to claim 1, characterized in that: The crushing portion (31) is a crushing block protruding outwards and provided on the outer walls of both sides of the roller (3), and the inner wall of the connecting seat (2) has a shoulder for the corresponding crushing block to abut against.

4. The force limiting assembly for rear-seat locking buckle of an automobile according to claim 1, characterized in that: The roller (3) is located between two side portions of the connecting seat (2), and a pin shaft (4) is arranged through the roller (3) and two side portions of the connecting seat (2).

5. The force limiting assembly for rear-seat locking buckle of an automobile according to claim 1, 2, 3 or 4, characterized in that: The connecting seat (2) is fixedly connected to a housing (5) that covers the roller (3), and the connecting end (11) extends out of the housing (5).

6. The force limiting assembly for rear-seat locking buckles of a vehicle according to claim 5, characterized in that: Both ends of the steel wire rope (1) are inserted into the roller (3) and are fixedly connected to locking blocks (6). The roller (3) has a receiving cavity (33) for receiving the locking block (6) and for the locking block (6) to abut against. The rope body of the steel wire rope (1) passes through the roller (3), is wound around the roller (3) once, and then extends out of the connecting seat (2) to form a connecting end (11).

7. The force limiting assembly for rear-seat locking buckles of a vehicle according to claim 6, characterized in that: The connecting seat (2) is fixedly connected to the limiting seat (7), the limiting seat (7) has two grooves 1 (71), the shell (5) abuts against the limiting seat (7) and the shell (5) has two grooves 2, the groove 1 (71) and the corresponding groove 2 are connected to form an outlet hole for the wire rope (1) to pass through.

8. The force limiting assembly for rear-seat locking buckles of a vehicle according to claim 7, characterized in that: Both sides of the connecting seat (2) have flanges (21) extending to the ends of the connecting seat (2) and integrally connected to the bottom of the connecting seat (2), and the bottom of the connecting seat (2) has a connecting hole (22).

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