A seat belt buckle assembly mechanism with a PCB harness switch

Abstract

The utility model relates to the technical field of safety belt, provide a kind of safety belt lock catch assembly mechanism with PCB harness switch, by safety belt lock tongue insertion lock catch, drive bow elastic component to descend, bow elastic component again drive lock catch mechanism to lock safety belt lock tongue, the process of bow elastic component descending drives PCB slide block to descend, PCB slide block slides on PCB, PCB slide block descends and contacts with the switch module of PCB, switch module is transmitted signal to vehicle body controller by prompting harness, vehicle body controller receives signal, will not remind, if safety belt lock catch is not inserted, then vehicle body controller does not receive signal, then will remind, such structure is simple, low in cost, function satisfies the full life cycle of car safety belt unfastening reminding.

Description

Technical Field

[0001] This utility model relates to the field of seat belt technology, and in particular to a seat belt buckle assembly mechanism with a PCB board wiring harness switch. Background Technology

[0002] With the increasing prevalence of automobiles, the incidence of safety accidents is also rising. Seat belts, as a crucial component of a vehicle's passive safety system, significantly reduce injuries to occupants in accidents. Seat belts feature buckles. Existing patent CN208429052U discloses a seat belt buckle that adds a boss structure to the latch to limit the movement of the locking tongue, and adds a clearance at a corresponding position on the slider to limit the insertion displacement of the locking tongue. This prevents damage to the buckle caused by accidental force on the locking tongue after the passenger has put on the seat belt, and also reduces damage to the buckle's internal components from repeated use, thus improving the overall lifespan of the seat belt. Regarding current seat belt buckles, national standards require passenger cars and related vehicles to be equipped with seat belt unfastened reminder devices. However, current seat belt unfastened reminder wiring harness switch buckle mechanisms are either complex in structure, expensive, and prone to locking failure or jamming; or the wiring harness switch is easily deformed, causing the seat belt unfastened reminder to malfunction. Therefore, solving these problems is essential. Utility Model Content

[0003] In view of this, the purpose of this utility model is to propose a seat belt buckle assembly mechanism with a PCB board wiring harness switch, which solves the problems in the background art.

[0004] To achieve the above objectives, this utility model provides a seat belt buckle assembly mechanism with a PCB board wiring harness switch, including a first cover and a second cover that can be assembled together. A slotted seat is engaged between the first cover and the second cover. A spring assembly is longitudinally slidably arranged inside the slotted seat near the first cover. A PCB board slider is connected to the side of the spring assembly. A vertical PCB board is arranged inside the first cover. The PCB board slider slides and fits onto the PCB board. A switch module is on the PCB board. The contact between the PCB board slider and the switch module realizes the signal switching. A latch mechanism is provided inside the slotted seat. The seat belt latch is inserted and presses down on the spring assembly. The spring assembly drives the latch mechanism to lock the seat belt latch.

[0005] Preferably, a wire harness fixing bracket is provided on the bottom side of the slotted seat, one side of the wire harness fixing bracket is connected to the PCB board, and a reminder wire harness is connected to the bottom of the PCB board. The reminder wire harness is connected to the body controller through the wire harness fixing bracket.

[0006] Preferably, the bottom of the projectile assembly has a protrusion on the side away from the cover. The latch mechanism includes a spring connected to the bottom of the protrusion of the projectile assembly. A latch is provided inside the slotted seat. The bottom ends of the latch are engaged in the rotating holes on the side walls of the slotted seat and can rotate. The bottom protrusion of the projectile assembly passes through the through hole of the latch and moves within the through hole. The bottom end of the spring is fixedly connected to the bottom end of the latch within the through hole. The top end of the latch is lifted by the movement of the projectile assembly and returned to its original position by the spring.

[0007] Preferably, the slotted seat has L-shaped slots on both sides, and a transverse locking pin slides in both L-shaped slots. When the locking pin moves to the transverse part of the L-shaped slot, it is located above the bottom protrusion of the projectile assembly, thereby pressing down on the bottom protrusion of the projectile assembly. The projectile assembly then springs up against the latch to release the seat belt latch.

[0008] Preferably, a button is also longitudinally slidably arranged inside the first and second housings. The button is slidably sleeved outside the slotted seat. The bottom ends of the button are located outside the ends of the locking pin and limit the ends of the locking pin. The button is provided with two limiting strips inside to abut against the locking pin.

[0009] Preferably, the bottom of the slotted seat is fitted with a locking bracket by rivets.

[0010] Preferably, a counterweight is provided in the upper part of the groove-shaped seat.

[0011] The beneficial effects of this utility model are as follows: This utility model uses the seat belt latch to insert into the buckle, which drives the spring assembly to move downward. The spring assembly then drives the latch mechanism to lock the seat belt latch. During the downward movement of the spring assembly, the PCB board slider moves downward. The PCB board slider slides on the PCB board and contacts the switch module on the PCB board. The switch module transmits a signal to the vehicle body controller through the reminder wiring harness. If the vehicle body controller receives the signal, it will not issue a reminder. If the seat belt buckle is not inserted, the vehicle body controller will not receive the signal and will issue a reminder. This structure is simple, low-cost, and the function meets the full life cycle requirements of the car seat belt unfastened reminder.

[0012] The present invention relates to a spring-loaded assembly that moves downward, causing the top of the latch to rotate slightly around its bottom and spring up. After springing up, the spring-loaded assembly disengages from the latch, and the seatbelt latch inserts into the latch. The latch returns to its original position under the action of the spring, locking the latch. At this time, the spring-loaded assembly presses down on the latch. By pressing the button, the button moves the locking pin downward, pressing down on the protruding part at the bottom of the spring-loaded assembly. This causes the spring-loaded assembly to rotate slightly and spring up, disengaging from the seatbelt latch and thus unlocking the seatbelt. The entire seatbelt unlocking structure is simple and can be well adapted to the use of seatbelt reminder functions. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is an exploded view of the present invention;

[0015] Figure 2 This is a schematic diagram of the overall design of this utility model;

[0016] Figure 3 yes Figure 2 A schematic diagram of concealed casing one and casing two;

[0017] Figure 4 yes Figure 3 A diagram showing the hidden button and counterweight.

[0018] The diagram is marked as follows:

[0019] 1. Cover 1; 2. PCB board; 3. Wire harness fixing bracket; 4. Reminder wire harness; 5. PCB board slider; 6. Slotted seat; 7. Bullet assembly; 8. Locking bracket; 9. Rivet; 10. Latch; 11. Spring; 12. Locking pin; 13. Button; 14. Counterweight; 15. Cover 2; 16. Limiting strip. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0021] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figures 1 to 4As shown, a seatbelt buckle assembly mechanism with a PCB board wiring harness switch includes two combinable housings, a first housing 1 and a second housing 15. A slotted seat 6 is engaged between the first housing 1 and the second housing 15. A spring assembly 7 is longitudinally slidably arranged inside the slotted seat 6 near the first housing 1. A PCB board slider 5 is connected to the side of the spring assembly 7. A vertical PCB board 2 is arranged inside the first housing 1. The PCB board slider 5 slides and fits onto the PCB board 2. A switch module is located on the PCB board 2. The contact between the PCB board slider 5 and the switch module enables signal switching. A latch mechanism is provided inside the slotted seat 6. When the seatbelt latch is inserted, it presses down on the spring assembly, and the spring assembly drives the latch mechanism to lock the seatbelt latch. A wiring harness fixing bracket 3 is provided at the bottom side of the slotted seat 6. One side of the wiring harness fixing bracket 3 is connected to the PCB board 2. A reminder wiring harness 4 is connected to the bottom of the PCB board 2. The reminder wiring harness 4 is connected to the vehicle body controller through the wiring harness fixing bracket 3. The vehicle sound controller controls the reminder module to remind the user that the seatbelt is not fastened. The seatbelt latch is inserted into the buckle, causing the spring assembly 7 to move downwards. The spring assembly 7 then drives the latch mechanism to lock the seatbelt latch. During the downward movement of the spring assembly 7, the PCB board slider 5 also moves downwards. The PCB board slider 5 slides on the PCB board 2 and contacts the switch module on the PCB board 2. The switch module transmits a signal to the body controller through the reminder wiring harness. When the body controller receives the signal, it indicates that the seatbelt is fastened and will not issue a reminder. If the seatbelt buckle is not inserted, the body controller does not receive a signal and controls the reminder module to issue a reminder. This structure is simple, low-cost, and fulfills the full lifecycle requirements of the seatbelt reminder function.

[0023] The bottom of the projectile assembly 7 has a protrusion away from the housing 1. The latch mechanism includes a spring 11 connected to the bottom of the protrusion of the projectile assembly 7. A latch 10 is provided inside the slotted seat 6. The bottom ends of the latch 10 are engaged in the rotating holes on the side walls of the slotted seat 6 and can rotate. The bottom protrusion of the projectile assembly 7 passes through the through hole of the latch 10 and moves within the through hole. The bottom end of the spring 11 is fixedly connected to the bottom end of the latch 10 within the through hole. The top end of the latch 10 is lifted by the movement of the projectile assembly 7 and returned to its original position by the spring 11. L-shaped grooves are provided on the side walls of the slotted seat 6. A transverse locking pin 12 slides in both L-shaped grooves. When the locking pin 12 moves to the transverse part of the L-shaped groove, it is located above the bottom protrusion of the projectile assembly 7, thereby pressing down on the bottom protrusion of the projectile assembly 7. The projectile assembly 7 then lifts the latch 10 to release the seat belt latch. Inside the housing 1 and housing 2 15, a button 13 is also longitudinally slidably arranged. The button 13 is slidably sleeved on the outside of the slotted seat 6. The bottom ends of the button 13 are located outside the ends of the locking pin 12, limiting the ends of the locking pin 12. Inside the button 13, there are two limiting strips 16 that abut against the locking pin 12. The spring assembly 7 moves down, causing the top of the latch 10 to rotate slightly around the bottom end and spring up. After springing up, the spring assembly 7 disengages from the latch 10, and the seat belt latch tongue is inserted into the latch 10. The latch 10 returns to its original position under the action of the spring, thus locking the latch tongue. At this time, the spring assembly 7 presses down on the latch. By pressing the button 13, the button 13 causes the locking pin 12 to move down and press down on the protruding part at the bottom of the spring assembly 7, so that the spring assembly 7 causes the spring to drive the latch 10 to rotate slightly and spring up, disengaging from the seat belt latch tongue, thus unlocking. The entire seat belt unlocking structure is simple and can be well adapted to the use of the seat belt unfastened reminder function.

[0024] The bottom of the slotted seat 6 is fitted with a locking bracket 8 via rivets 9, and is then installed on the vehicle seat via the locking bracket 8. A counterweight 14 is provided in the upper part of the slotted seat 6 for counterweighting and maintaining balance.

[0025] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this utility model is limited to these examples; within the framework of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above, which are not provided in the details for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A seatbelt buckle assembly mechanism with a PCB board wiring harness switch, comprising a first housing (1) and a second housing (15) that can be assembled together, characterized in that, A slotted seat (6) is snapped between the first cover (1) and the second cover (15). A projectile assembly (7) is longitudinally slidably arranged inside the slotted seat (6) near the first cover (1). A PCB board slider (5) is connected to the side of the projectile assembly (7). A vertical PCB board (2) is arranged inside the first cover (1). The PCB board slider (5) slides and is fitted onto the PCB board (2). A switch module is on the PCB board (2). The contact between the PCB board slider (5) and the switch module realizes the signal switching. A latch mechanism is arranged inside the slotted seat (6). The seat belt latch is inserted and pressed down on the projectile assembly. The projectile assembly drives the latch mechanism to lock the seat belt latch.

2. The seat belt buckle assembly mechanism with PCB board wiring harness switch according to claim 1, characterized in that, The bottom side of the slotted seat (6) is provided with a wire harness fixing bracket (3). One side of the wire harness fixing bracket (3) is connected to the PCB board (2). The bottom of the PCB board (2) is connected to a reminder wire harness (4). The reminder wire harness (4) is connected to the body controller through the wire harness fixing bracket (3).

3. The seat belt buckle assembly mechanism with PCB board wiring harness switch according to claim 1, characterized in that, The bottom of the projectile assembly (7) has a protrusion on the side away from the cover (1). The latch mechanism includes a spring (11) connected to the bottom of the protrusion of the projectile assembly (7). A latch (10) is provided inside the slotted seat (6). The bottom ends of the latch (10) are locked in the rotating holes on both sides of the slotted seat (6) and can rotate. The bottom protrusion of the projectile assembly (7) passes through the through hole of the latch (10) and moves in the through hole. The bottom end of the spring (11) is fixedly connected to the bottom end of the latch (10) in the through hole. The top end of the latch (10) is driven to spring up by the movement of the projectile assembly (7) and is driven back to its original position by the spring (11).

4. The seat belt buckle assembly mechanism with PCB board wiring harness switch according to claim 3, characterized in that, The slotted seat (6) has L-shaped slots on both sides. A transverse locking pin (12) slides in both L-shaped slots. When the locking pin (12) moves to the transverse part of the L-shaped slot, it is located above the bottom protrusion of the projectile assembly (7), thereby pressing down on the bottom protrusion of the projectile assembly (7). The projectile assembly (7) then springs up the latch (10) to release the seat belt latch.

5. The seat belt buckle assembly mechanism with PCB board wiring harness switch according to claim 4, characterized in that, A button (13) is also longitudinally slidably installed inside the first cover (1) and the second cover (15). The button (13) is slidably sleeved outside the slotted seat (6). The bottom of both ends of the button (13) is located outside the two ends of the locking pin (12) and limits the two ends of the locking pin (12). There are two limiting strips (16) inside the button (13) to abut against the locking pin (12).

6. The seat belt buckle assembly mechanism with PCB board wiring harness switch according to claim 1, characterized in that, The bottom of the slotted seat (6) is fitted with a locking bracket (8) by rivets (9).

7. The seat belt buckle assembly mechanism with PCB board wiring harness switch according to claim 1, characterized in that, A counterweight (14) is provided in the upper part of the groove seat (6).

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