Safety belt height switching and adjusting equipment

Abstract

The invention discloses safety belt height switching and adjusting equipment, and relates to the technical field of automobile safety belts, the safety belt height switching and adjusting equipment comprises a fixed support, a movable seat is arranged on the fixed support, an auxiliary buckle is arranged on the movable seat, an auxiliary buckle for sleeving a safety belt is arranged on the outer side of the auxiliary buckle, and positioning holes are formed in the fixed support at equal intervals. According to the safety belt height switching adjusting equipment, when the rack is separated from the gear, the gear and the connecting shaft can recover to the initial position under the elastic acting force of the torsion spring, the linkage plate and the extrusion plate can also return to the original position, meanwhile, the reset spring can push the connecting block and the movable magnetic block to return to the initial position, adsorption of the movable magnetic block and the fixed magnetic block is relieved, and the safety belt height switching adjusting equipment is started. Due to the fact that the connecting shafts are vertically arranged along the outer surface of the fixed support at equal intervals, accurate positioning and stable fixing of the movable base can be achieved at different height positions, and the diversified requirements of passengers of different heights for the height of the safety belt are met.

Description

Technical Field

[0001] This invention relates to the field of automotive seat belt technology, specifically to a seat belt height adjustment device. Background Technology

[0002] Seatbelt height adjustment devices are important car safety devices that ensure passenger safety. They are used to adjust the height of the anchor points on the seatbelt to accommodate occupants of different sizes.

[0003] Prior art 1 (Chinese patent with publication number CN114148282A and publication date of 2022-03-08) discloses a height adjuster for a seat belt, comprising: a guide rail, wherein a rack is provided along the length of the guide rail; a slider, wherein the slider is slidably connected to the guide rail, and a gear meshing with the rack is provided on the slider; and an adjusting assembly, comprising: a fixed wheel; an abutment member, wherein the abutment member has a first position and a second position; and a trigger member, which is fixedly connected to the abutment member and rotatably connected to the slider. Rotating the trigger member allows the abutment member to switch arbitrarily between the first position and the second position. The adjusting assembly includes a fixed wheel and an abutment member. Locking is achieved by the fixed wheel and the gear pressing against the abutment member. The greater the pressure of the gear on the abutment member, the greater the locking force, thereby avoiding the danger caused by insufficient locking force of the height adjuster in the event of a sudden accident.

[0004] There is also prior art 2 (Chinese patent with announcement number CN108275112B and announcement date of 2025-01-28) which describes a seat belt height adjustment mechanism, including an adjustment cover, a mounting bracket, a sliding assembly, a height-limiting plastic component, and a seat belt guide ring. The sliding assembly is slidably mounted on the front of the mounting bracket from top to bottom and can slide up and down along the mounting bracket. The seat belt guide ring is fixed to the sliding assembly by bolts. The adjustment cover is fastened to the sliding assembly, and a part of the adjustment cover covers the seat belt guide ring. The adjustment cover and the sliding assembly slide up and down synchronously. The adjustment cover is used by the driver or passenger. The height-limiting plastic component engages with the mounting bracket from the back of the mounting bracket to limit the sliding assembly. While meeting regulatory requirements, this reduces design redundancy caused by regulatory requirements due to height increases, and makes the seat belt height adjustment mechanism develop towards lightweight and cost reduction.

[0005] Although existing technology can adjust seat belt height, it still has some shortcomings. The adjustment components are relatively complex, which may be difficult for ordinary users to operate. In addition, after the height is adjusted, it relies on a single mechanism for restriction. When the equipment wears out, its restriction effect will be greatly reduced, and it is easy to loosen, affecting the stability of the seat belt height and thus adversely affecting the safety of passengers.

[0006] Therefore, we propose a seatbelt height switching and adjustment device to solve the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a seat belt height switching and adjustment device to solve the problems mentioned in the background art. The adjustment components currently on the market have relatively complex structures, which may be difficult for ordinary users to operate. At the same time, after the height adjustment is completed, it relies on only a single mechanism to restrict it. When the device is worn, its restrictive effect will be greatly reduced, and it is easy to loosen, affecting the stability of the seat belt height, and thus adversely affecting the safety of passengers.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a seat belt height switching and adjusting device, comprising a fixed bracket, a movable seat on the fixed bracket, an auxiliary buckle on the movable seat, and an auxiliary buckle for seat belt mounting on the outer side of the auxiliary buckle; positioning holes are evenly spaced on the fixed bracket; positioning pins are slidably connected on the movable seat, and the positioning pins cooperate with the positioning holes to achieve initial switching of seat belt height; an auxiliary mechanism is provided between the inner side of the movable seat and the fixed bracket, and the auxiliary mechanism drives the movable magnetic block to attract the fixed magnetic block through the moving force of the movable seat, thereby further defining the position of the movable seat.

[0009] Preferably, the rear surface of the fixed bracket is provided with sliding grooves on both the left and right sides, and a slider is slidably connected inside the sliding groove. The slider is fixedly connected to the movable seat, and the stability of the movable seat is improved by the cooperation between the sliding groove and the slider.

[0010] Preferably, racks are slidably provided on both the left and right sides of the movable seat, and a connecting plate is fixedly connected to the outer side of the racks. An adjusting screw is rotatably connected to the outer side of the movable seat, and the adjusting screw is threadedly connected to the connecting plate. The racks slide along the movable seat through the threaded connection between the adjusting screw and the connecting plate.

[0011] Preferably, a connecting shaft is rotatably connected to the fixed bracket, and a gear is fixedly connected to the outside of the connecting shaft, and the connecting shafts are arranged vertically at equal intervals along the outer surface of the fixed bracket.

[0012] Preferably, a torsion spring is fixedly connected between the gear and the fixed bracket. When the gear and the rack are in the same position, they are in a meshing state. When performing height switching operations, only one set of the left and right racks can mesh with the gear.

[0013] Preferably, the auxiliary mechanism includes a linkage plate, which is fixedly connected to the connecting shaft. When the left connecting shaft is only subjected to the elastic force of the torsion spring, the linkage plate is set vertically downward, and when the right connecting shaft is only subjected to the elastic force of the torsion spring, the linkage plate is set vertically upward.

[0014] Preferably, the fixed bracket has a movable groove, and the movable groove and the positioning hole are spaced apart. A movable magnetic block is slidably connected inside the movable groove, and the outer side of the movable magnetic block is arranged in an arc shape.

[0015] Preferably, the movable magnetic block and the connecting shaft are positioned at the same horizontal level, and a connecting block is fixedly connected to the side of the movable magnetic block, and a return spring is fixedly connected between the connecting block and the movable groove.

[0016] Preferably, a positioning plate is fixedly connected to the rear side of the movable seat, and a fixed magnetic block is fixedly connected to the inner side of the positioning plate. The fixed magnetic block and the movable magnetic block have opposite magnetic properties. A pressing plate is fixedly connected to the inner side of the linkage plate, and the edge of the pressing plate is arranged in an arc shape. At the same time, the movable magnetic block slides along the movable groove through the abutment of the pressing plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are: (1) A positioning pin is provided. When the user needs to adjust the length of the seat belt, the positioning pin can be pulled outward to separate the positioning pin from the positioning hole. At this time, the moving seat can slide up and down along the fixed bracket. During the movement of the moving seat, the slider slides in the groove to ensure the stability of the movement. When the moving seat moves to the appropriate height, the positioning pin is released and the manual positioning pin will be inserted into the corresponding positioning hole under the action to achieve the initial fixation of the height of the seat belt.

[0018] (2) If further precise height adjustment or enhanced fixation is required, the user can select the safety belt height according to their own needs. To raise the height, turn the right adjustment screw; to lower the height, turn the right adjustment screw. Since the adjustment screw is threadedly connected to the connecting plate, turning the adjustment screw will cause the connecting plate to drive the rack to slide along the moving seat. When the rack and gear are in the same position, they will mesh with each other. When performing height switching operations, only one set of racks on the left and right sides can mesh with the gear. Therefore, the appropriate side can be selected for operation according to actual needs, while avoiding interference from the other set.

[0019] (3) When the rack and gear mesh, the linkage plate fixed on the connecting shaft will also rotate. The squeezing plate on the inner side of the linkage plate will abut against the moving magnetic block. The arc structure makes the abutting process smoother. Under the abutting action of the squeezing plate, the moving magnetic block will slide along the moving groove. When the moving magnetic block moves to the position opposite to the fixed magnetic block, the two will generate an attraction force due to their opposite magnetism, thereby further limiting the position of the moving seat, improving the stability after the seat belt height is adjusted, and avoiding the instability of seat belt height adjustment caused by a single limiting structure.

[0020] (4) When the rack and gear separate, the gear and connecting shaft will return to their initial positions under the elastic force of the torsion spring. The linkage plate and the pressing plate will also return to their original positions. At the same time, the reset spring will push the connecting block and the moving magnetic block back to their initial positions, releasing the attraction between the moving magnetic block and the fixed magnetic block, thus avoiding unnecessary attraction interference. Since the connecting shaft is arranged vertically at equal intervals along the outer surface of the fixed bracket, it can achieve accurate positioning and stable fixation of the moving seat at different heights, meeting the diverse needs of passengers of different heights for seat belt height. Attached Figure Description

[0021] Figure 1 This is a three-dimensional front view schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional rear view structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the fixing bracket of the present invention; Figure 4 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 5 This is a three-dimensional structural diagram of the movable seat of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the rack of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the linkage plate of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the fixed magnetic block of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the reset spring of the present invention.

[0022] In the diagram: 1. Fixed bracket; 2. Auxiliary buckle; 3. Movable seat; 4. Positioning pin; 5. Positioning hole; 6. Slide groove; 7. Slider; 8. Movable magnet; 9. Connecting plate; 10. Fixed magnet; 11. Rack; 12. Gear; 13. Positioning plate; 14. Adjusting screw; 15. Linkage plate; 16. Pressing plate; 17. Torsion spring; 18. Return spring; 19. Connecting block; 20. Movable groove; 21. Connecting shaft. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1: To allow the seat belt height to be adapted to the needs of different users, a positioning pin 4 and a positioning hole 5 are provided. The positioning pin 4 and the positioning hole 5 cooperate to achieve the initial switching of the seat belt height, such as... Figure 1 , Figure 2 , Figure 5 and Figure 9 The present invention provides the following technical solution: a seat belt height switching and adjusting device, wherein a movable seat 3 is provided on a fixed bracket 1, and an auxiliary buckle 2 is provided on the movable seat 3, and an auxiliary buckle 2 for seat belt mounting is provided on the outer side of the auxiliary buckle 2; a sliding groove 6 is provided on both the left and right sides of the rear surface of the fixed bracket 1, and a slider 7 is slidably connected inside the sliding groove 6; the slider 7 is fixedly connected to the movable seat 3; the stability of the movement of the movable seat 3 is improved by the cooperation between the sliding groove 6 and the slider 7; positioning holes 5 are provided at equal intervals on the fixed bracket 1, and positioning pins 4 are slidably connected on the movable seat 3; and the positioning pins 4 cooperate with the positioning holes 5 to realize the initial switching of seat belt height.

[0025] The seatbelt height adjustment device includes a positioning pin 4. When users need to flexibly adjust the seatbelt length to suit their height or seating posture, the adjustment operation is simple and orderly. Users simply need to gently pull the positioning pin 4 outwards. Under the applied external force, the positioning pin 4 gradually separates from the positioning hole 5 fixed at a specific position on the fixed bracket 1. This separation releases the locking restriction on the movable seat 3, allowing the originally fixed movable seat 3 to move freely and slide smoothly up and down along the fixed bracket 1. During the up-and-down movement of the movable seat 3, to ensure the accuracy and stability of the movement and avoid swaying or deviation... In cases of movement, the device incorporates a sliding block 7 and a sliding groove 6. The sliding block 7 is tightly fitted into the sliding groove 6. As the moving seat 3 moves, the sliding block 7 slides orderly within the track defined by the sliding groove 6, providing a reliable guarantee for the smooth movement of the moving seat 3. When the user moves the moving seat 3 to a height that meets their needs and feels comfortable and suitable, they can release the previously withdrawn positioning pin 4 and manually drive the positioning pin 4 to insert into the corresponding positioning hole 5 that is now aligned with it. The re-engagement of the positioning pin 4 and the positioning hole 5 achieves a firm lock on the moving seat 3, thereby completing the initial fixation of the seat belt height and providing stable and reliable support for the user's safe riding.

[0026] Example 2: After initially fixing the seatbelt height, the height can be further precisely adjusted, or for safety reasons, it may be necessary to strengthen the seatbelt's securing effect to cope with complex and changing driving conditions, such as... Figures 3-5 and Figure 7 The present invention provides the following technical solution: a seat belt height switching and adjustment device, wherein racks 11 are slidably arranged on both the left and right sides of the movable seat 3, and a connecting plate 9 is fixedly connected to the outer side of the racks 11. An adjusting screw 14 is rotatably connected to the outer side of the movable seat 3, and the adjusting screw 14 is threadedly connected to the connecting plate 9. The racks 11 slide along the movable seat 3 through the threaded connection between the adjusting screw 14 and the connecting plate 9. A connecting shaft 21 is rotatably connected to the fixed bracket 1, and a gear 12 is fixedly connected to the outer side of the connecting shaft 21. The connecting shaft 21 is arranged vertically at equal intervals along the outer surface of the fixed bracket 1. A torsion spring 17 is fixedly connected between the gear 12 and the fixed bracket 1. When the gear 12 and the rack 11 are in a meshing state, only one set of the left and right racks 11 can mesh with the gear 12 during the height switching operation.

[0027] When the seatbelt height needs to be adjusted upwards, the user simply rotates the adjusting screw 14 on the right clockwise. Since the adjusting screw 14 is tightly connected to the connecting plate 9 via threads, during rotation, its threads interact with the threads on the connecting plate 9, generating a helical thrust that causes the connecting plate 9 to move in a specific direction. This, in turn, causes the rack 11 connected to the connecting plate 9 to slide smoothly along the movable seat 3. Conversely, when the user needs to adjust the seatbelt height downwards, they rotate the adjusting screw 14 on the right counterclockwise. Again, based on the threaded connection between the adjusting screw 14 and the connecting plate 9, counterclockwise rotation of the adjusting screw 14 generates a helical thrust in the opposite direction to the height adjustment, causing the connecting plate 9 to move the rack 11 along the movable seat. 3. Slide in the opposite direction. During the sliding process of rack 11, when it moves to the position corresponding to gear 12, rack 11 will perfectly engage with the tooth groove on gear 12. The two mesh together, thereby achieving fine adjustment of seat belt height. When performing height switching operations, the device is designed with two sets of racks 11 on the left and right. In order to avoid motion interference, ensure smooth adjustment and improve operation accuracy, only one set of racks 11 on the left and right can mesh with gear 12. In actual operation, the user can flexibly choose the appropriate side of rack 11 to mesh with gear 12 according to their specific needs. At the same time, there is no need to worry that the other set of racks 11 will interfere with the current adjustment operation. Thus, the seat belt height can be easily and accurately adjusted and fixed.

[0028] Example 3: Figures 6-9 The present invention provides the following technical solution: a seat belt height switching and adjusting device, wherein an auxiliary mechanism is provided between the inner side of the movable seat 3 and the fixed bracket 1. The auxiliary mechanism drives the movable magnetic block 8 to attract the fixed magnetic block 10 through the moving force of the movable seat 3, thereby further defining the position of the movable seat 3. The auxiliary mechanism includes a linkage plate 15, which is fixedly connected to the connecting shaft 21. When the left connecting shaft 21 is only subjected to the elastic force of the torsion spring 17, the linkage plate 15 is vertically downward, and when the right connecting shaft 21 is only subjected to the elastic force of the torsion spring 17, the linkage plate 15 is vertically upward. The fixed bracket 1 has a moving groove 20, and the moving groove 20 and the positioning hole are connected... The components are spaced apart and arranged in a slidable manner. A movable magnetic block 8 is slidably connected inside the movable groove 20. The outer side of the movable magnetic block 8 is arranged in an arc shape. The movable magnetic block 8 and the connecting shaft 21 are arranged at the same horizontal position. A connecting block 19 is fixedly connected to the side of the movable magnetic block 8. A return spring 18 is fixedly connected between the connecting block 19 and the movable groove 20. A positioning plate 13 is fixedly connected to the rear side of the movable seat 3. A fixed magnetic block 10 is fixedly connected to the inner side of the positioning plate 13. The fixed magnetic block 10 has the opposite magnetic properties to the movable magnetic block 8. A pressing plate 16 is fixedly connected to the inner side of the linkage plate 15. The side of the pressing plate 16 is arranged in an arc shape. The movable magnetic block 8 slides along the movable groove 20 by the abutment of the pressing plate 16.

[0029] Once rack 11 and gear 12 successfully mesh, gear 12 begins to rotate under the drive of rack 11. Its rotational force is quickly transmitted to the connecting shaft 21. The linkage plate 15, fixed to the connecting shaft 21, also begins to rotate under the drive of the connecting shaft 21. The pressing plate 16 mounted inside the linkage plate 15 swings accordingly. Because the outer side of the moving magnet 8 has an arc-shaped structure, the side of the pressing plate 16 also has a corresponding arc-shaped structure. This arc-shaped structure makes the contact action smoother, reducing friction and jamming, and ensuring the smoothness of the mechanical movement. Under the continuous contact action of the pressing plate 16… The movable magnetic block 8 begins to slide along the movable groove 20, which provides guidance for the movement of the movable magnetic block 8. When the movable magnetic block 8 moves to a position opposite to the fixed magnetic block 10, due to their opposite magnetism, according to the principle of interaction between magnetic poles, the magnetic attraction force holds the movable magnetic block 8 and the fixed magnetic block 10 together, thus further limiting the position of the movable seat 3. The dual limiting structure greatly improves the stability after the seat belt height is adjusted, effectively avoiding the loosening and displacement problems that may occur with a single limiting structure, and providing a more reliable guarantee for the user's safety.

[0030] As the movable magnetic block 8 slides along the movable groove 20, when it moves due to the resistance of the pressing plate 16, the return spring 18 is compressed and stores elastic potential energy. When the rack 11 and gear 12 separate, the transmission effect caused by the meshing disappears. Under the elastic force of the torsion spring 17, the gear 12 and connecting shaft 21 begin to return to their initial positions. The torsion spring 17 pushes the gear 12 and connecting shaft 21 back to their initial state. As the connecting shaft 21 returns to its original position, the linkage plate 15 and the pressing plate 16 also return to their original positions. The compressed return spring 18 pushes the connecting block 19 and the movable magnetic block. 8. Returning to the initial position releases the attraction between the movable magnetic block 8 and the fixed magnetic block 10, ensuring that the fixed magnetic block 10 on the movable seat 3 is precisely attracted and limited only to the movable magnetic block 8 at the corresponding position, while the movable magnetic blocks 8 at other positions are stored inside the movable slot 20, avoiding unnecessary attraction interference. This makes the entire height adjustment and fixing system more precise. Since the connecting shaft 21 is arranged vertically at equal intervals along the outer surface of the fixed bracket 1, the device can accurately position and stably fix the movable seat 3 at different heights, meeting the diverse needs of passengers of different heights for seat belt height.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A seat belt height switching and adjusting device, comprising a fixed bracket (1), a movable seat (3) being provided on the fixed bracket (1), and an auxiliary buckle (2) being provided on the movable seat (3), and an auxiliary buckle (2) for mounting the seat belt being provided on the outer side of the auxiliary buckle (2), characterized in that, The fixed bracket (1) has positioning holes (5) at equal intervals. The movable seat (3) is slidably connected with a positioning pin (4). The positioning pin (4) cooperates with the positioning hole (5) to achieve the initial switching of the seat belt height. An auxiliary mechanism is provided between the inner side of the movable seat (3) and the fixed bracket (1). The auxiliary mechanism drives the movable magnet (8) to adhere to the fixed magnet (10) through the moving force of the movable seat (3), thereby further defining the position of the movable seat (3).

2. The seat belt height switching and adjusting device according to claim 1, characterized in that: The rear surface of the fixed bracket (1) is provided with sliding grooves (6) on both the left and right sides. A slider (7) is slidably connected inside the sliding groove (6). The slider (7) is fixedly connected to the moving seat (3). The stability of the moving seat (3) is improved by the cooperation between the sliding groove (6) and the slider (7).

3. The seat belt height switching and adjusting device according to claim 2, characterized in that: The movable seat (3) is slidably provided with racks (11) on both the left and right sides, and a connecting plate (9) is fixedly connected to the outer side of the racks (11). An adjusting screw (14) is rotatably connected to the outer side of the movable seat (3), and the adjusting screw (14) is threadedly connected to the connecting plate (9). The rack (11) slides along the movable seat (3) through the threaded connection between the adjusting screw (14) and the connecting plate (9).

4. The seat belt height switching and adjusting device according to claim 3, characterized in that: The fixed bracket (1) is rotatably connected to a connecting shaft (21), and a gear (12) is fixedly connected to the outside of the connecting shaft (21). The connecting shaft (21) is arranged vertically at equal intervals along the outer surface of the fixed bracket (1).

5. A seatbelt height switching and adjusting device according to claim 4, characterized in that: A torsion spring (17) is fixedly connected between the gear (12) and the fixed bracket (1). When the gear (12) and the rack (11) are in a meshing state, only one set of the left and right racks (11) can mesh with the gear (12) during the height switching operation.

6. A seatbelt height switching and adjusting device according to claim 5, characterized in that: The auxiliary mechanism includes a linkage plate (15), which is fixedly connected to the connecting shaft (21). When the left connecting shaft (21) is only subjected to the elastic force of the torsion spring (17), the linkage plate (15) is set vertically downward, and when the right connecting shaft (21) is only subjected to the elastic force of the torsion spring (17), the linkage plate (15) is set vertically upward.

7. A seatbelt height switching and adjusting device according to claim 6, characterized in that: The fixed bracket (1) is provided with a movable groove (20), and the movable groove (20) and the positioning hole (5) are spaced apart. A movable magnetic block (8) is slidably connected inside the movable groove (20), and the outer side of the movable magnetic block (8) is arranged in an arc shape.

8. A seatbelt height switching and adjusting device according to claim 7, characterized in that: The movable magnetic block (8) and the connecting shaft (21) are set at the same horizontal position, and a connecting block (19) is fixedly connected to the side of the movable magnetic block (8), and a return spring (18) is fixedly connected between the connecting block (19) and the movable groove (20).

9. A seatbelt height switching and adjusting device according to claim 8, characterized in that: The rear side of the movable seat (3) is fixedly connected to a positioning plate (13), and the inner side of the positioning plate (13) is fixedly connected to a fixed magnetic block (10). The fixed magnetic block (10) and the movable magnetic block (8) have opposite magnetic properties. The inner side of the linkage plate (15) is fixedly connected to a pressing plate (16), and the side of the pressing plate (16) is set in an arc-shaped structure. At the same time, the movable magnetic block (8) slides along the moving groove (20) through the abutment action of the pressing plate (16).

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