A seat belt height adjustment device, system, and vehicle

Abstract

The application provides a seat belt height adjusting device, system and vehicle, and relates to the technical field of automobile safety, wherein the seat belt height adjusting device comprises a vehicle body trim plate, an opening area is formed in the vehicle body trim plate, a sliding plate assembly is in sliding connection with the vehicle body trim plate and is provided with a seat belt guide opening which is arranged opposite to the opening area and is used for passing a seat belt, and a driving mechanism is connected with the sliding plate assembly and can drive the sliding plate assembly to move and position in a first direction relative to the vehicle body trim plate so as to change the height of the seat belt guide opening, wherein the first direction is the height direction of the seat belt. Through the close cooperation of the vehicle body trim plate, the sliding plate assembly and the driving mechanism, the passenger can quickly and conveniently complete the secondary height adjustment after fastening the seat belt, without manually repeating the operation, so as to improve the convenience and comfort of the passenger in using the seat belt. Meanwhile, the overall structure is compact, and the beauty and space utilization rate in the vehicle are improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive safety technology, and in particular to a seat belt height adjustment device, system and vehicle. Background Technology

[0002] With the continuous growth of car ownership and increasingly stringent safety regulations, seat belts have become one of the most basic and important passive safety devices in vehicles. To ensure that seat belts can effectively restrain occupants and disperse impact forces during a collision, the height of the seat belt shoulder guide point must match the occupant's shoulder position. Therefore, drivers or passengers of different heights and body types need to adjust the seat belt height.

[0003] Currently, mass-produced vehicles generally adopt a mechanical manual seat belt height adjustment structure. For example, a groove and locking mechanism are set in the B-pillar trim panel. The occupant needs to press the unlock button and manually move the guide ring up and down to the appropriate position before locking it again. Furthermore, although some solutions have added spring assistance or motor drive on this basis, there are still problems such as cumbersome operation, limited adjustment accuracy, slow response and low utilization rate. In addition, there are also limitations such as large structural volume and low integration with the interior trim panels.

[0004] In view of this, how to design a seat belt adjustment device that allows for quick and convenient secondary adjustment after the occupant has fastened the seat belt, while also having a compact structure for integration with the vehicle's interior panels, has become an urgent problem to be solved. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a seat belt height adjustment device, system and vehicle to solve or partially solve the above problems.

[0006] To achieve the above objectives, this utility model provides a seat belt height adjustment device, comprising: A vehicle body trim panel, wherein an opening area is provided on the vehicle body trim panel; The skateboard assembly is slidably connected to the vehicle body trim panel and has a seat belt guide opening opposite to the opening area for threading the seat belt. A drive mechanism is connected to the skateboard assembly and can drive the skateboard assembly to move and position relative to the vehicle body trim panel in a first direction to change the height of the seat belt guide opening; Wherein, the first direction is the height direction of the seat belt.

[0007] Optionally, the vehicle body trim panel includes an outer side and an inner side that are disposed opposite to each other, and the slide plate assembly includes a trim panel slide plate; the trim panel slide plate is slidably connected to the inner side and has the seat belt guide opening thereon, at least a portion of the trim panel slide plate is used to cover the opening area and is exposed relative to the vehicle body trim panel.

[0008] Optionally, the drive mechanism further includes a bracket and a sliding plate, one side of the bracket being connected to the vehicle body, the opposite side of which is slidably connected to the sliding plate, and the side of the sliding plate away from the bracket being fixedly connected to the trim panel slide plate.

[0009] Optionally, the sliding plate has a mounting seat protruding towards the decorative panel slide plate on the side away from the bracket, and the decorative panel slide plate is fixedly connected to the sliding plate through the mounting seat.

[0010] Optionally, the driving mechanism includes a reel driven to rotate by a driving member, and a first cable and a second cable; one end of the first cable is connected to the reel, and the other end is connected to the first end of the sliding plate; one end of the second cable is connected to the reel, and the other end is connected to the second end of the sliding plate. During the process of the drive unit driving the reel to rotate, one of the first cable and the second cable is in a winding state and the other is in an unwinding state; the first end and the second end are the two ends of the sliding plate that are sequentially opposite each other in the first direction.

[0011] Optionally, the bracket is provided with a limiting member with a through hole at the second end near the sliding plate, and the second end of the sliding plate is provided with a mounting post protruding away from the decorative panel slide plate. After the second cable passes through the through hole of the limiting member, it is fixedly connected to the second end of the sliding plate through the mounting post.

[0012] Optionally, a guide plate is provided at the safety belt guide opening of the decorative panel skateboard. The guide plate includes a board body and a main guide opening located on the board body. The board body is installed on the side of the decorative panel skateboard near the bracket. The main guide opening is connected to the safety belt guide opening for the safety belt to be threaded through.

[0013] Optionally, the skateboard assembly is provided with an electrically adjustable switch for adjusting the drive mechanism; or, The vehicle body trim panel is equipped with an electric adjustment switch for adjusting the drive mechanism.

[0014] Based on the same concept, this application also provides a seat belt height adjustment system, including: the seat belt height adjustment device as described above, an image acquisition device located in the driver's cab, and a control unit; The control unit is connected to the drive component of the seat belt height adjustment device and is used to control the drive component to operate after the image acquisition device acquires and confirms the relative position of the occupant's shoulder and the seat belt.

[0015] Based on the same concept, this application also provides a vehicle, including: the seat belt height adjustment system as described above.

[0016] As can be seen from the above description, the seat belt height adjustment device, system, and vehicle provided by this utility model include: a vehicle body trim panel with an opening area; a sliding plate assembly slidably connected to the vehicle body trim panel and having a seat belt guide opening opposite to the opening area for threading the seat belt; and a drive mechanism connected to the sliding plate assembly and capable of driving the sliding plate assembly to move and position relative to the vehicle body trim panel in a first direction to change the height of the seat belt guide opening; wherein, the first direction is the height direction of the seat belt. This invention, through the close cooperation of the vehicle body trim panel, the sliding plate assembly, and the drive mechanism, maintains the original seat belt height adjustment function while changing the large size of the adjuster in related technologies. The compact connection and arrangement of the sliding plate assembly and the drive mechanism make the overall structure more compact and the components highly integrated, effectively reducing the space occupied in the vehicle. Moreover, the compact connection and arrangement of the sliding plate assembly and the drive mechanism also avoids the risk of bumps and collisions that may be caused by traditional exposed adjustment mechanisms, improving the overall vehicle safety. In addition, thanks to the above-mentioned compact design and precise drive control, after the occupants fasten their seat belts, they can directly complete the secondary height adjustment automatically or semi-automatically without repeated manual operation. The adjustment process is smooth and free of jamming. By accurately adjusting the shoulder guide position of the seat belt according to different occupant heights and body types, the convenience of adjustment is improved while further enhancing the restraint effect and occupant protection, achieving overall optimization of small size, high reliability, and easy operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the seat belt height adjustment system according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the seat belt height adjustment device according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the seat belt height adjustment device from another angle according to an embodiment of the present utility model; Figure 4 This is an exploded view of the structure of the seat belt height adjustment device according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the drive mechanism structure according to an embodiment of the present utility model; Figure 6 This is an exploded view of the drive mechanism structure according to an embodiment of the present utility model; Figure 7 This is a schematic diagram of the cross-sectional structure of the drive mechanism according to an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 100. Seatbelt height adjustment device; 110. Vehicle body trim panel; 111. Opening area; 112. Outer side; 113. Inner side; 120. Slide board assembly; 121. Seatbelt guide opening; 122. Trim panel slide board; 130. Drive mechanism; 131. Bracket; 132. Sliding plate; 133. Mounting base; 134. Drive component; 135. Reel; 136a. First cable; 136b. Second cable; 137. Limiting component; 138. Cable sleeve; 139. Mounting post; 140. Electrical adjustment switch; 150. Guide plate; 151. Plate body; 152. Body guide opening; 200. Image acquisition device; 300. Control unit. 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 and accompanying drawings.

[0021] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application 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 term encompasses the elements or objects listed following the term 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] As described in the background section, with the continuous growth of car ownership and increasingly stringent road safety regulations, seat belts have become one of the most basic and important passive safety devices in vehicles. In the event of a collision or emergency braking, seat belts can effectively restrain the occupant's body movement, disperse impact force, and reduce injury. The appropriate height of the seat belt's shoulder guide point directly affects the restraint effect and comfort: if the guide point is too high, the seat belt will slip towards the occupant's neck, potentially causing discomfort or even secondary injury; if it is too low, the force will be concentrated on the shoulder, and the chest will experience excessive pressure, reducing safety. Therefore, drivers and passengers of different heights and body types need to adjust the seat belt height appropriately to ensure that the seat belt is always in the optimal restraint position.

[0023] Currently, mass-produced vehicles generally use a mechanical manual adjustment structure, such as an exposed height adjustment mechanism on the B-pillar trim panel. This mechanism works by using a sliding groove and a locking mechanism. Occupants need to press an unlock button and manually adjust the height adjustment mechanism up or down to the desired position before locking it again. While this solution is structurally mature, it suffers from cumbersome operation: occupants must use both hands, especially the driver, who may find it difficult to adjust the height after fastening their seatbelt; the adjustment precision is limited, with most offering only a few fixed positions, making it difficult to accurately match the shoulder height of different occupants; furthermore, due to the complexity of the operation, many users often neglect to adjust, preventing the seatbelt from maintaining its optimal position and reducing its restraint effect. Specifically, the sliding groove and locking mechanism rely on mechanical friction to achieve a fixed height, lacking continuous adjustment and automatic response capabilities, making it difficult to adapt to the rapid adjustment needs of different body types.

[0024] To address the aforementioned issues, related technologies have also attempted to add spring assistance or motor drive to the above solutions. By rotating the motor, the sliding plate of the height adjustment mechanism can be moved, thereby reducing the operational burden or achieving a certain degree of automatic adjustment.

[0025] However, the inventors of this application have found that the above-mentioned solutions still have some limitations. Spring-assisted solutions can only provide auxiliary force and cannot completely replace manual operation. Simple motor drive solutions usually add a drive source (such as a servo motor) directly to the outside, resulting in a large structural volume, occupying space in the vehicle, and making it difficult to integrate the appearance with the interior panels, which poses a safety hazard (the motor and adjustment structure will swing with the seat belt). In addition, the adjustment response speed is limited, and the accuracy is still limited by the slide gear, resulting in limited improvement in user experience and actual safety.

[0026] To address the aforementioned issues, the inventors of this application propose a compact and conveniently height-adjustable seatbelt height adjustment device 100. By providing an opening area 111 on the vehicle body trim panel 110, a sliding plate assembly 120 slidably connected to the vehicle body trim panel 110, and a drive mechanism 130 connected to the sliding plate assembly 120, the seatbelt guide port 121 can move smoothly along the seatbelt height direction, enabling quick and convenient secondary adjustment after the occupant has fastened their seatbelt. Simultaneously, this design fully considers the sliding plate assembly 120 covering the opening area 111, the cooperation between the drive component 134 and the sliding plate assembly 120, and the overall integrated layout. This not only improves adjustment accuracy and response speed but also reduces the device's size, balancing aesthetics and reliability. Therefore, it effectively solves the problems of cumbersome operation, limited accuracy, slow response, and low integration with the vehicle interior trim panel in existing technologies.

[0027] The following is in conjunction with the appendix Figure 1-7 The embodiments of this application will be described in detail below.

[0028] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a seatbelt height adjustment device 100 includes: The vehicle body trim panel 110 has an opening area 111; The skateboard assembly 120 is slidably connected to the vehicle body trim panel 110 and is provided with a seat belt guide opening 121 opposite to the opening area 111 for threading a seat belt. The drive mechanism 130 is connected to the skateboard assembly 120 and can drive the skateboard assembly 120 to move and position relative to the vehicle body trim panel 110 in a first direction to change the height of the seat belt guide opening 121. Wherein, the first direction is the height direction of the seat belt.

[0029] For example, the body trim panel 110 serves as the basic mounting component of the seat belt height adjustment device 100. Optionally, it can be fixed to the B-pillar of the vehicle or the inner side of the seat, serving both a decorative and supportive function. The body trim panel 110 has an opening area 111, which provides space and basic conditions for the compact structure of the sliding plate assembly 120 and the body trim panel 110. At the same time, the seat belt guide port 121 can be located on the sliding plate assembly 120 to ensure smooth seat belt insertion.

[0030] Optionally, the body trim panel 110 can be made of high-strength engineering plastics or composite materials to balance durability and aesthetics; the edges of the opening area 111 can be chamfered or covered with soft material to prevent friction damage to the seat belt or occupants; the body trim panel 110 and the sliding plate assembly 120 can be slidably connected via guide rails or slides, etc., so that the sliding plate assembly 120 can slide along the first direction X (the height direction of the seat belt, for reference)... Figure 1 The smooth movement of the X-shaped panel maintains the overall aesthetic appeal and seamless integration of the trim.

[0031] For example, the skateboard assembly 120 is provided with a seat belt guide opening 121, which is opposite to the opening area 111 of the vehicle body trim panel 110 to facilitate the smooth insertion of the seat belt. Optionally, the sliding connection between the skateboard assembly 120 and the vehicle body trim panel 110 can be achieved by a guide groove, roller, or low-friction slider. The two slide relative to each other to achieve sliding adjustment of the seat belt height. Furthermore, the sliding gap between the two can be controlled within the range of 0.1–0.5 mm to ensure smooth movement without shaking.

[0032] Furthermore, the surface of the skateboard assembly 120 may be coated with a wear-resistant coating or reinforced plastic, and a flexible bushing may be added to the edge of the seat belt guide opening 121 to reduce friction. Consequently, when connected to the drive mechanism 130, the skateboard assembly 120 can better convert driving force into movement along the height direction, enabling rapid secondary adjustments by the occupant after fastening the seat belt.

[0033] For example, the drive mechanism 130 may consist of a drive component 134 (e.g., a micro servo motor), a belt or gear transmission system, a reel 135, etc. One end of the drive mechanism 130 is fixed to the frame of the vehicle body as a fixed end, and the other end is used as an output end to drive the slide plate assembly 120 to move through a cable, rack, or roller, etc. Optionally, each fixed connection point adopts an anti-loosening thread or snap-fit ​​design to ensure durability and repeatability accuracy.

[0034] Furthermore, the drive mechanism 130 can be automatically adjusted or user-triggered adjusted in conjunction with the control unit 300 to achieve continuous or multi-level seat belt height adjustment. In addition, the precise cooperation between the drive mechanism 130 and the sliding plate assembly 120 ensures smooth sliding and low noise, while the overall system is compact and highly integrated with the vehicle interior panels, without affecting aesthetics or spatial layout.

[0035] By way of example, the embodiments of this application will be further described in conjunction with the process of using a controller to adjust the height of the seat belt. The seat belt height adjustment device 100 of this embodiment realizes the quick and convenient secondary adjustment of the occupant after fastening the seat belt through the close cooperation of the vehicle body trim panel 110, the skateboard assembly 120 and the drive mechanism 130.

[0036] Specifically, the body trim panel 110 is fixed to the B-pillar or the inner side of the seat as a basic mounting component. Its opening area 111 not only provides space for the seatbelt to pass through but also allows the sliding plate assembly 120 to move freely in a first direction. The sliding plate assembly 120 is slidably connected to the body trim panel 110 via guide grooves, rollers, and other structures, and moves along the opening area 111 of the body trim panel 110. The seatbelt guide opening 121 on the sliding plate body corresponds to the opening area 111 of the trim panel, ensuring that the seatbelt always maintains the correct path. During adjustment, the sliding plate assembly 120 first receives driving force from the drive mechanism 130 and moves smoothly along the height direction of the seatbelt via guide rails or grooves. Optionally, the drive mechanism 130 transmits power to the sliding plate assembly 120 through a drive component 134 and a transmission system such as a belt, gear, or cable. One end of the drive mechanism 130 is fixed to the vehicle body, and the other end is fixedly connected to the sliding plate assembly 120. This allows the skateboard assembly 120, drive mechanism 130, and body trim panel 110 to form a complete force transmission chain and sliding channel during the adjustment process, enabling continuous or multi-position adjustment of the seat belt shoulder position.

[0037] In the specific adjustment process, after the occupant fastens their seatbelt, the system's control unit 300 (controller) acquires the current seatbelt position and occupant height information based on the image acquisition device 200, and issues a command to control the drive mechanism 130 to move the sliding plate assembly 120 along the guide rail. The seatbelt guide opening 121 on the sliding plate assembly 120 then slides up and down along the opening area 111, and the seatbelt adjusts the shoulder position accordingly. Throughout the process, the vehicle body trim panel 110 and the sliding plate assembly 120 slide together to ensure relative movement, while the drive mechanism 130 provides power and position control.

[0038] Through the aforementioned structural cooperation, the device in this embodiment can automatically or semi-automatically adjust the shoulder position of the seat belt according to occupants of different heights and body types, improving restraint effectiveness and occupant protection. Furthermore, the height adjustment device has a compact structure, with all components essentially hidden inside the trim panel, saving interior space while maintaining aesthetics.

[0039] This application provides a seat belt height adjustment device 100, including: a vehicle body trim panel 110, the vehicle body trim panel 110 having an opening area 111; a sliding plate assembly 120, slidably connected to the vehicle body trim panel 110, and having a seat belt guide opening 121 disposed opposite to the opening area 111 for threading a seat belt; and a drive mechanism 130, connected to the sliding plate assembly 120, and capable of driving the sliding plate assembly 120 to move and position relative to the vehicle body trim panel 110 in a first direction to change the height of the seat belt guide opening 121; wherein, the first direction is the height direction of the seat belt. This embodiment, through the close cooperation of the vehicle body trim panel 110, the sliding plate assembly 120, and the drive mechanism 130, maintains the original seat belt height adjustment function while changing the large size of the adjuster in related technologies. The sliding plate assembly 120 and the drive mechanism 130 are compactly connected, making the overall structure more compact and the components highly integrated, effectively reducing the space occupied in the vehicle. Moreover, the compact connection between the sliding plate assembly 120 and the drive mechanism 130 avoids the risk of collision that may be caused by the traditional exposed adjustment mechanism, improving the overall vehicle safety. In addition, thanks to the above compact design and precise drive control, after the occupant fastens the seat belt, they can directly complete the secondary height adjustment automatically or semi-automatically without repeated manual operation. The adjustment process is smooth and free from jamming. By accurately adjusting the shoulder guide position of the seat belt according to different occupant heights and body types, the convenience of adjustment is improved, and the restraint effect and occupant protection are further enhanced, achieving overall optimization of small size, high reliability, and easy operation.

[0040] In some embodiments, such as Figure 2 , Figure 3 and Figure 4 As shown, the vehicle body trim panel 110 includes an outer side 112 and an inner side 113 disposed opposite to each other, and the slide plate assembly 120 includes a trim panel slide plate 122; the trim panel slide plate 122 is slidably connected to the inner side 113, and is provided with the seat belt guide opening 121 thereon, at least a portion of the trim panel slide plate 122 is used to cover the opening area 111, and is exposed relative to the vehicle body trim panel 110.

[0041] The skateboard assembly 120 includes a trim skateboard 122, which is slidably connected to the inner side 113 of the vehicle body trim panel 110 and has the seat belt guide opening 121 thereon. At least part of the trim skateboard 122 is used to cover the opening area 111.

[0042] For example, the trim panel slide plate 122 is a movable panel in the seat belt height adjustment device 100. Its main function is to smoothly and controllably move the opening area 111 on the side away from the outer side 112 of the vehicle body trim panel 110 (i.e., the inner side 113) along a first direction, thereby changing the shoulder guide height of the seat belt. The trim panel slide plate 122 carries and positions the seat belt guide opening 121, and undertakes the dual functions of guiding and bearing force during the seat belt adjustment process.

[0043] Optionally, the trim panel 122 may consist of an external exterior finish (facing the vehicle interior user in the same direction as the outer side 112), internal reinforcing ribs or a load-bearing frame, a guide bushing, and a force transmission interface connected to the drive mechanism 130. The exterior finish matches the interior color and texture to ensure visual integration; the internal load-bearing frame may employ a high-rigidity structure to withstand driving forces and prevent deformation under long-term use. The seatbelt guide 121 must conform to seatbelt angle specifications, with chamfered edges and embedded flexible bushings to protect the seatbelt and reduce friction noise.

[0044] For example, the trim panel slide plate 122 can achieve a precise sliding fit with the vehicle body trim panel 110 through various guiding schemes. Optionally, a longitudinal metal or plastic guide rail can be provided on the inner side 113 of the vehicle body trim panel 110 (i.e., the side away from the outer side 112). The trim panel slide plate 122 is equipped with a low-friction POM / PA slider or a ball bearing slider to cooperate with the guide rail for movement along the track. Alternatively, a shaped groove and a sliding piece can be interlocked, or two rollers can roll along the metal rail. Furthermore, the sliding gap needs to be strictly controlled between 0.1 and 0.5 mm to ensure smooth movement without shaking, while avoiding jamming due to thermal expansion and contraction. In addition, the exposed gap between the vehicle body trim panel 110 and the trim panel slide plate 122 can be fitted with a flexible lip strip or a thin soft edge to ensure visual integration after assembly and prevent light penetration.

[0045] For example, the drive mechanism 130 is fixedly connected to the vehicle body frame and the trim panel slide plate 122 respectively. When the drive signal of the drive mechanism 130 is issued, the linear thrust or pull force output by the drive mechanism 130 is directly applied to the trim panel slide plate 122 through the transmission component, causing it to move smoothly up and down along the guide rail. Furthermore, a position sensor, limit switch, or magnetic encoder can be arranged in the inner cavity of the slide rail or slide plate to realize closed-loop control and process monitoring. Optionally, the drive mechanism 130 can have self-locking or braking characteristics, so as to maintain the position of the slide plate even in the event of power failure or abnormal conditions, ensuring safe and reliable adjustment.

[0046] In this embodiment, the vehicle body trim panel 110 provides the installation base and appearance cover. The trim panel slide plate 122 is tightly spliced ​​with the vehicle body trim panel 110 to achieve visual integration inside the vehicle. At the same time, the entire device has a compact structure and high degree of concealment, which saves interior space and maintains aesthetics.

[0047] In some embodiments, such as Figure 3 , Figure 4 and Figure 5 As shown, the drive mechanism 130 also includes a bracket 131 and a sliding plate 132. One side of the bracket 131 is used to connect to the vehicle body, and the opposite side is slidably connected to the sliding plate 132. The side of the sliding plate 132 away from the bracket 131 is fixedly connected to the trim panel slide plate 122.

[0048] For example, the bracket 131 is fixed as a rigid base to the vehicle body reinforcement structure (such as the B-pillar longitudinal beam or transverse stiffening plate). Cold-rolled steel plate or aluminum alloy can be used as the material of the bracket 131 to bear the force from the sliding plate 132 and the seat belt and reliably transmit it to the vehicle body. The sliding plate 132 is slidably connected to the bracket 131. Optionally, the sliding plate 132 is placed on the guide rail / slide groove of the bracket 131 to undertake the functions of force transmission, guidance and anti-rotation. The trim panel slide plate 122 is an exposed movable trim surface, which has a seat belt guide port 121 and is rigidly connected to the sliding plate 132 through the connector / mounting seat 133 to ensure the appearance is integrated while bearing the driving force.

[0049] Optionally, a double-rail + slider guide structure can be used between the bracket 131 and the sliding plate 132 to improve lateral rigidity and eliminate tilting. The sliding clearance is strictly controlled within the range of 0.1–0.5 mm (considering material and processing tolerances and thermal expansion and contraction allowance). The slider material uses self-lubricating POM / PTFE-containing engineering plastic or ball bearing mechanism to reduce friction and noise. In addition, the bracket 131 can be fixed to the vehicle body with M6 / M8 structural bolts (or spot welding / riveting depending on the disassembly requirements). Key holes are equipped with metal embedded parts or threaded sleeves and anti-loosening measures such as spring washers / thread adhesive are used to ensure stable and firm installation.

[0050] Furthermore, the drive element 134 of the drive mechanism 130 and its components (e.g., rack-pinion, cable-retractor, linear screw or motor push rod, etc.) can be mounted on the bracket 131.

[0051] This embodiment, through the structural system of bracket 131—sliding plate 132—trimmed plate slide plate 122 designed with the above structure and connection method, can achieve low friction, high precision, low noise and fast response of seat belt secondary height adjustment while ensuring strength and reliability. At the same time, the main mechanism is hidden in the trim panel to maintain the aesthetics of the vehicle interior and space utilization.

[0052] In some embodiments, such as Figure 3 , Figure 4 and Figure 5As shown, the sliding plate 132 has a mounting seat 133 protruding towards the decorative panel slide plate 122 on the side away from the bracket 131, and the decorative panel slide plate 122 is fixedly connected to the sliding plate 132 through the mounting seat 133.

[0053] For example, the sliding plate 132, the mounting base 133, and the trim panel slide plate 122 together constitute the key force-bearing and appearance system of the seat belt height adjustment device 100. The sliding plate 132 moves linearly on the bracket 131, receives the driving force, and transmits the force to the trim panel slide plate 122; the mounting base 133 is a rigid interface protruding from the sliding plate 132 to the trim panel side, used to firmly connect the trim panel slide plate 122 to the sliding plate 132 and concentrate the load transmission; the trim panel slide plate 122, as an exposed part, directly supports the seat belt guide port 121 and faces the occupant, and is the main part of the appearance that comes into contact with the user.

[0054] For example, the structural design of the mounting base 133 can be flexibly selected according to the manufacturing process and stress requirements. For instance, for scenarios with high loads or frequent disassembly and assembly, metal inserts (threaded sleeves, press-fit studs, etc.) can be embedded in the mounting base 133, and the decorative panel slide plate 122 can be fixed by screwing the inserts into it with bolts, balancing strength and maintainability; if cost and lightweight are the priority, the sliding plate 132 and the mounting base 133 can be integrally injection molded or integrally formed with metal, and the decorative panel slide plate 122 can be directly connected with self-tapping screws or bolts; in cases where assembly speed and appearance requirements are higher and the stress is lower, quick-connect clips can be used with positioning / limiting screws to achieve a semi-rigid connection. It should be noted that in the above solutions, bolts and screws should be equipped with elastic washers and locking adhesive or self-locking nuts, and cylindrical pins can be added to key positioning holes to ensure concentricity and shear strength.

[0055] For example, the contact surfaces of the mounting base 133 and the decorative panel slide plate 122 can be supplemented with rubber pads or foam pads to reduce resonance and abnormal noise and improve the tactile feel. At the same time, the connection between the mounting base 133 and the sliding plate 132 needs to be reinforced with ribs or locally thickened to avoid cracking of the plastic part due to concentrated load from the bolts; if the sliding plate 132 is a plastic part, the position of the mounting base 133 should be considered to embed a metal sleeve or reinforcing plate to improve the overall stability of the sliding plate 132.

[0056] For example, during the seat belt height adjustment process, the force generated by the drive mechanism 130 is transmitted to the mounting base 133 via the sliding plate 132, and then transmitted to the trim panel slide plate 122 by the mounting base 133; the reaction force of the seat belt is also transmitted in the opposite direction along the same path.

[0057] In this embodiment, the sliding plate 132 and the decorative plate slide 122 are fixedly connected by the mounting base 133, thereby establishing a clear and reliable load path and greatly improving the strength and durability of the connection between the sliding plate 132 and the decorative plate slide 122. This provides a solid engineering foundation for the precise and smooth adjustment of the seat belt while ensuring the integrated appearance of the seat belt height adjustment device 100.

[0058] In some embodiments, such as Figure 5 , Figure 6 and Figure 7 As shown, the driving mechanism 130 includes a reel 135 driven to rotate by a driving member 134, and a first cable 136a and a second cable 136b; one end of the first cable 136a is connected to the reel 135, and the other end is connected to the first end of the sliding plate 132; one end of the second cable 136b is connected to the reel 135, and the other end is connected to the second end of the sliding plate 132. During the process of the drive member 134 driving the reel 135 to rotate, one of the first cable 136a and the second cable 136b is in a winding state and the other is in an unwinding state; the first end and the second end are the two ends of the sliding plate 132 that are sequentially opposite each other in the first direction.

[0059] Exemplarily, the operating principle of the seat belt height adjustment device 100 in this embodiment is as follows: the drive member 134 drives the reel 135 to rotate, and the reel 135 simultaneously winds the first cable 136a and the second cable 136b. The other ends of the two cables are respectively fixed to the upper and lower ends of the sliding plate 132. When the reel 135 rotates in the forward direction, one cable is tightened and the other cable is loosened, thereby forming an upward traction force at the sliding plate 132; when it rotates in the reverse direction, a downward traction force is generated. Through this "single reel 135 - double cable" reverse winding and unwinding structure, the sliding plate 132 can achieve smooth lifting and lowering on the guide rail, and the drive member 134 only needs one motor to complete bidirectional control.

[0060] Specifically, in practical applications, different cable routing schemes can be selected according to the vehicle body space and assembly requirements. Optionally, a top fixed pulley reverse winding method can be adopted: the reel 135 is located at the lower end, the cable goes upward through the top fixed pulley and then falls back to the sliding plate 132, so that when the reel 135 winds up the cable, an upward force is generated directly at the sliding plate 132; in addition, another possible method is a single-loop reverse winding, where a continuous cable goes from the reel 135 through two top pulleys, around the upper and lower ends of the sliding plate 132 and back to the reel 135, achieving the same opposite pulling force; if the top space is limited, a coaxial double-groove drum can be used, with two cables wound in opposite directions on both sides of the drum, and then the direction is changed by guide pulleys.

[0061] It should be noted that in the above solutions, it can be ensured that one cable tightens and the other loosens with each rotation of the scroll 135, thereby driving the sliding plate 132 to rise and fall accurately. The fixed pulley is actually a force fulcrum far away from the drive end. It does not necessarily have to be a fixed pulley. For example, a fixed sleeve or a limiting member 137 with a through hole can also achieve the same effect and complete the accurate raising and lowering of the sliding plate 132.

[0062] For example, the entire sliding structure operates as follows: when the sliding plate 132 needs to be lifted, the reel 135 rotates forward to tighten the upper cable and loosen the lower cable, generating an upward pulling force at the sliding plate 132 via the top pulley or guide member; during descent, the reel 135 rotates in reverse, tightening the other cable or allowing gravity to control the downward movement, and the sliding plate 132 moves smoothly down along the guide rail. The two cables act on both ends of the sliding plate 132 respectively, ensuring symmetrical force distribution. Optionally, multi-point guide rails can effectively prevent tilting and jamming.

[0063] This embodiment uses a drive combination of a roller 135 and a cable to achieve precise up-and-down driving of the sliding plate 132 with a single motor. The structure is compact and easy to hide inside the vehicle body trim panel 110, saving installation space and cost. Secondly, the symmetrical constraint of the two cables ensures that the sliding plate 132 is balanced in force and moves smoothly, greatly reducing tilting and vibration noise, improving overall safety, and meeting the stringent requirements of automotive seat belt height adjustment for reliability and durability.

[0064] In some embodiments, such as Figure 5 , Figure 6 and Figure 7 As shown, the bracket 131 is provided with a limiting member 137 with a through hole at the second end near the sliding plate 132. The second end of the sliding plate 132 is provided with a mounting post 139 protruding away from the decorative panel slide plate 122. After the second cable 136b passes through the through hole of the limiting member 137, it is fixedly connected to the second end of the sliding plate 132 through the mounting post 139.

[0065] For example, the limiting member 137 is located on the bracket 131 near the second end of the sliding plate 132. Its main body forms a channel for the cable to pass through, which is used to accurately guide the second cable 136b and limit its lateral displacement. At the same time, it also serves as a mechanical limiting or anti-derailment structure when necessary. More importantly, it serves as a force-bearing point instead of a fixed pulley structure, so as to realize the accurate lifting and lowering of the sliding plate 132 in the cable and roller 135 combination structure.

[0066] Furthermore, the limiting member 137 can be a separate part (such as a metal or high-strength engineering plastic bushing) fixed to the bracket 131 by riveting, bolting, or snap-fitting, or it can be integrally stamped or cast with the bracket 131. To reduce friction and protect the outer periphery of the cable, it can be used in conjunction with the cable sleeve 138. Specifically, the cable sleeve 138 passes through the through hole of the limiting member 137 and is fixed with an interference fit; or, the cable sleeve 138 and the limiting member 137 are integrally formed and fixedly installed on the bracket 131 for the cable to pass through. Optionally, PTFE, POM, or nylon bushings are installed inside the through holes of the cable sleeve 138 and / or the limiting member 137, with the hole diameter slightly larger than the outer diameter of the cable, to ensure that there is neither jamming nor excessive swaying when the cable is retracted or extended at high speed. At the same time, retaining rings or stop plates can be added to both sides of the limiting member 137 to further control lateral displacement and improve guiding stability.

[0067] For example, one end of the second cable 136b passes through the through hole of the limiting member 137 to the second end of the sliding plate 132, where it is rigidly fixed to the mounting post 139. The mounting post 139 is a hanging point protruding outward from the second end of the sliding plate 132, used to reliably anchor the metal end or connector of the cable end and transmit the traction force to the frame of the sliding plate 132. To ensure strength, the mounting post 139 should preferably be integrally connected with the metal insert or reinforcing rib inside the sliding plate 132, and can adopt a structure such as a perforated cylinder, annular lug, or grooved pin, and be detachably connected to the cable end by bolts, pins, or rivets. It should also be noted that a metal insert or reinforcing plate should be added to the joint between the mounting post 139 and the sliding plate 132 to avoid plastic fatigue cracking, and sufficient height (about 8–15 mm) should be reserved at the exposed end to facilitate end assembly and later maintenance.

[0068] For example, during seat belt height adjustment, the reel 135 drives the second cable 136b to pull the sliding plate 132 along a set path. The tension is guided through the through hole of the limiting member 137 and transmitted to the mounting post 139, and then transmitted from the mounting post 139 to the frame of the sliding plate 132, realizing the smooth up and down movement of the sliding plate 132. The limiting member 137 not only serves as a guide but also as a mechanical reference at the end of the stroke. It works in conjunction with a position sensor or micro switch to form an electrically controlled closed-loop stroke protection. When the sliding plate 132 approaches its limit position, changes in cable tension or the end touching / approaching the limiting member 137 can trigger a limit signal to prevent overtravel and improve system safety.

[0069] This embodiment provides a high-strength, low-deformation force-bearing interface by setting the mounting column 139, which significantly improves the connection reliability and impact resistance. At the same time, the limiting member 137 serves as both a guide and a force-bearing point to replace the fixed pulley structure, so as to realize the accurate lifting and lowering of the sliding plate 132 in the cable and roller 135 combination structure, which meets the strength, fatigue and durability requirements in the automotive environment and ensures long-term stable operation and driving safety.

[0070] In some embodiments, such as Figure 5 , Figure 6 and Figure 7 As shown, the bracket 131 extends from one end to the other along the first direction and is provided with a cable sleeve 138. The second end of the sliding plate 132 is provided with a mounting post 139 protruding away from the decorative plate slide 122. The second cable 136b passes through the cable sleeve 138 and is fixedly connected to the second end of the sliding plate 132 through the mounting post 139.

[0071] For example, in this embodiment, the cable sleeve 138 arranged along the first direction of the bracket 131 mainly functions to provide a controlled and smooth path for the second cable 136b, while preventing the cable from being damaged by friction with the bracket 131 or the metal edge of the vehicle body, reducing noise and the risk of entanglement. More importantly, it serves as a force-bearing point instead of a fixed pulley structure, so as to realize the accurate lifting and lowering of the sliding plate 132 in the cable and reel 135 combined structure.

[0072] The cable sleeve 138 typically extends along the height of the safety belt. Optionally, it can be constructed from a single-layer flexible hose, rigid plastic tube, U-shaped tube, or flexible tube segments spliced ​​together, and fixed at both ends by flanges, fixing clips, or rubber sealing sleeves. If necessary, a protective ring or sleeve can be added at the connection hole of the bracket 131 to ensure stable guidance and prevent sharp edges from damaging the cable. Furthermore, the inner cavity of the cable sleeve 138 can be equipped with a low-friction liner, and the minimum bending radius can be controlled to ensure smooth cable passage. At the same time, a tensioner is provided at the reel 135 or the sleeve end to maintain constant tension and prevent slack or noise.

[0073] For example, the outwardly protruding mounting post 139 on the sliding plate 132 serves as a rigid anchor point for the cable end. It can be fixed to the reinforcing frame of the sliding plate 132 by means of a metal threaded post, a perforated pin, or a welded lug, reliably transmitting the traction force of the cable to the sliding plate 132. Optionally, the mounting post 139 can be designed to be detachable or non-detachable, depending on maintenance requirements. The end connection can employ a metal clamp, a press-fit end, or a ball-head pin with a self-locking pin to ensure the cable end is securely fixed and prevents loosening. A decorative cover or protective cover can be designed at the exposed part of the mounting post 139, which is both aesthetically pleasing and dustproof, while also facilitating assembly and maintenance.

[0074] For example, in terms of structural fit, the traction force generated by the drive component 134 is transmitted through the second cable 136b. The cable is guided along the sleeve to the mounting post 139 of the sliding plate 132, and then acts on the sliding plate 132 through a rigid connection, so that the sliding plate 132 moves smoothly along the guide rail. In addition, the protruding design of the mounting post 139 is conducive to the reliable fixing of the end connection and the provision of reserved length. At the same time, the double cable split-end arrangement combined with the guide rail can effectively prevent the sliding plate 132 from tilting, so as to achieve force balance and synchronous movement.

[0075] This embodiment protects the cable routing and significantly extends its lifespan by setting up a cable sleeve 138. At the same time, the protruding design of the mounting post 139 makes assembly and maintenance more convenient. This design not only ensures the durability and safety of the cable, but also provides an anchor point for driving the sliding plate 132 to move up and down, realizing a reliable and efficient driving transmission scheme for the sliding plate 132.

[0076] In some embodiments, such as Figure 5 , Figure 6 and Figure 7 As shown, a guide plate 150 is provided at the seat belt guide opening 121 of the decorative panel slide plate 122. The guide plate 150 includes a plate body 151 and a main body guide opening 152 located on the plate body 151. The plate body 151 is installed on the side of the decorative panel slide plate 122 near the bracket 131. The main body guide opening 152 is connected to the seat belt guide opening 121 for the seat belt to be threaded through.

[0077] For example, the main function of the guide plate 150 is to provide stable guidance for the seat belt during the movement of the sliding plate 132 and the trim panel slide plate 122, preventing the seat belt from rubbing against the trim panel, sliding plate 132, or other interior structures, causing it to deviate or break. The guide plate 150 consists of a plate body 151 and a main guide opening 152. The plate body 151 is fixed to the trim panel slide plate 122 as a base and supports the guide opening, while also distributing the force on the seat belt. The main guide opening 152 is aligned with the seat belt guide opening 121, allowing the seat belt to pass smoothly through the guide plate 150 and maintain the correct direction.

[0078] For example, the main body 151 can be fixed to the decorative panel slide plate 122 by bolts, riveting, or clips. The contact surface can be designed with reinforcing ribs or a flat base to improve load-bearing capacity and prevent deformation. The main body guide opening 152 is fully connected to the seat belt guide opening 121. The edges of the guide opening should be rounded or softly covered to reduce seat belt wear and extend service life. Optionally, a positioning pin or embedded groove can be provided on the side of the guide plate 150 near the bracket 131 to ensure precise alignment during assembly, while maintaining a safe clearance for the slide plate's movement trajectory to avoid interference or collision.

[0079] For example, the guide plate 150 can be made of high-strength plastics (such as PA6+GF) or lightweight metals (aluminum alloy, stainless steel) to balance wear resistance, aging resistance, and lightweight requirements. Furthermore, a low-friction liner (PTFE or fluoroplastic) can be added inside the main guide opening 152 to further reduce the sliding resistance of the seatbelt. In terms of appearance, the guide plate 150 can be styled to match the interior trim panels, and the edges can be covered with soft material to prevent cuts or reduce noise, while ensuring durability and reliability over long-term use.

[0080] For example, during the seat belt height adjustment process, the guide plate 150 moves along the first direction with the sliding plate 132 and the decorative panel slide plate 122, so that the height of the seat belt guide opening 121 and the main body guide opening 152 automatically adjusts with the change of the decorative panel slide plate 122, thereby ensuring that the seat belt is threaded in the correct direction throughout the entire stroke. When the seat belt passes through the guide plate 150, its force is distributed along the main body 151 to the decorative panel slide plate 122, avoiding the plastic deformation caused by concentrated tension. At the same time, the guide plate 150 maintains a gap with the decorative panel slide plate 122 and the bracket 131 to ensure that the slide plate moves smoothly up and down without jamming.

[0081] In this embodiment, the guide plate 150 is set to ensure that the seat belt remains stably guided during the movement of the skateboard, preventing friction and wear and improving ease of use. At the same time, the guide plate 150 is close to the trim panel skateboard 122, with a compact structure and integrated layout with the vehicle body trim panel 110, further reducing the space occupied.

[0082] In some embodiments, such as Figure 2 As shown, the skateboard assembly 120 is provided with an electrical adjustment switch 140 for adjusting the drive mechanism 130; or, The vehicle body trim panel 110 is equipped with an electric adjustment switch 140 for adjusting the drive mechanism 130.

[0083] For example, an electrically adjustable switch 140 is provided on the skateboard assembly 120 or the vehicle body trim panel 110 to control the drive mechanism 130 to drive the skateboard to move along the height direction (first direction), thereby achieving precise adjustment of the seat belt height. Optionally, the switch type can be a button, lever, touch, or microswitch with indicator light, supporting short / long press or up / down direction control functions. If the switch is integrated on the skateboard assembly 120, occupants can operate it directly, which is especially convenient for rear or side occupants; if the switch is arranged on the vehicle body trim panel 110, the driver or passenger can control the movement of the skateboard from a fixed position, balancing safety and ease of operation.

[0084] For example, the electrically adjustable switch 140 is connected to the control unit 300 (controller) via a flexible wire harness or ribbon cable. The control unit 300 drives the servo motor or other driving component 134 to move the reel 135 and the cable, thereby achieving smooth movement of the skateboard in the first direction. Specifically, the wire harness is arranged along a pre-reserved wiring groove inside the trim panel to ensure reliable electrical connection and no interference with movement throughout the skateboard's entire stroke. The switch base can be fixed to the skateboard assembly 120 or the trim panel by screws, clips, or embedded slots. Externally, it can be fitted with a decorative cover flush with the interior panel, while meeting the requirements for dustproof, waterproof, and durable properties.

[0085] During operation, after the occupant presses the switch, the control unit 300 receives the signal and controls the drive mechanism 130 to move the slide along the height direction. The guide opening adjusts with the rise and fall of the slide to achieve smooth guidance of the seat belt. Furthermore, if the switch moves with the trim panel slide 122, the comfortable grip range and travel coverage need to be considered; if the switch is fixed to the trim panel, the wiring harness must adapt to the entire movement of the slide to ensure reliable electrical connection. Simultaneously, the control unit 300 can add limit and anti-pinch logic, automatically stopping the slide when it reaches the end of its travel to avoid accidental collisions or occupant hand injuries.

[0086] This embodiment, by setting an electric adjustment switch 140, allows occupants to quickly complete a secondary height adjustment after fastening their seat belts, resulting in precise and smooth skateboard movement. In addition, the electric adjustment switch 140 has a reasonable layout, short operating stroke, light force feedback, and comfortable operation. Furthermore, it is embedded in the skateboard or trim panel without increasing the exposed volume, further achieving a compact structure and integration with the interior.

[0087] Based on the same concept, such as Figure 1 As shown, this application also provides a seat belt height adjustment system, including: the seat belt height adjustment device 100 as described above, the image acquisition device 200 located in the driver's cab, and the control unit 300; The control unit 300 is connected to the drive unit 134 of the seat belt height adjustment device 100, and is used to control the drive unit 134 to operate after the image acquisition device 200 acquires and confirms the relative position of the occupant's shoulder and the seat belt.

[0088] For example, the seat belt height adjustment system of this embodiment mainly includes a seat belt height adjustment device 100, an image acquisition device 200, and a control unit 300. The seat belt height adjustment device 100 adjusts the height of the shoulder guide point of the seat belt through a sliding plate assembly 120, a sliding plate 132, a guide plate 150, and a drive mechanism 130 (servo motor, roller 135, and cable), thereby ensuring a precise match between the seat belt and the occupant's shoulder. Furthermore, the occupant can make automatic or manual secondary adjustments through the system. The sliding plate assembly 120 moves along the height direction, the guide plate 150 moves accordingly, and the height of the seat belt guide opening 121 is adjusted with the sliding plate to ensure smooth installation.

[0089] For example, the image acquisition device 200 is responsible for acquiring the relative spatial position of the occupant and the seat belt in real time. Optionally, a TOF camera can be used to generate a high-precision 3D point cloud image for identifying the occupant's shoulder and seat belt position. An RGB camera can also be used, but it may be affected by lighting conditions. The camera is typically installed at the location of the roof reading light or other unobstructed location, and is fixed by the in-vehicle bracket 131. The wiring harness is hidden inside the interior panel to ensure the overall aesthetics of the vehicle and the free movement of the skateboard assembly 120. The acquired image data is rapidly processed and analyzed by the integrated MPU processor to generate the position information of the seat belt relative to the shoulder.

[0090] For example, the control unit 300 receives data from the image acquisition device 200 and buckle status information, calculates the seat belt adjustment direction and range, and sends adjustment commands to the drive mechanism 130. The drive mechanism 130 drives the reel 135 to rotate via a servo motor, and the cable retraction and extension enable the sliding plate 132 and the slide assembly 120 to move along the height direction, with the guide plate 150 moving synchronously to ensure that the seat belt guide opening 121 is accurately aligned to the ideal height. The system can be equipped with limit and anti-pinch logic to prevent the slide from overtraveling or pinching the occupant. At the same time, the materials of the cable and reel 135 are wear-resistant and fatigue-resistant, ensuring long-term reliability.

[0091] For example, the skateboard assembly 120, guide plate 150, and electric adjustment switch 140 work together to achieve a combination of manual and automatic adjustment. When automatic image adjustment fails or the occupant prefers manual operation, a secondary height adjustment can be performed via the electric adjustment switch 140. The skateboard assembly 120 moves with the drive unit 134, and the guide plate 150 and seat belt guide opening 121 move synchronously to ensure that the seat belt is always correctly guided to the shoulder. The wiring harness is arranged in a wiring groove within the trim panel to avoid interfering with the skateboard movement while ensuring stable and reliable electrical connections.

[0092] The seatbelt height adjustment system in this embodiment has a compact layout, allowing occupants to quickly optimize their shoulder height after fastening their seatbelts, eliminating the need for cumbersome manual operation. A TOF camera and MPU analysis enable rapid response, while a servo motor drives the sliding plate assembly for precise 120° adjustment, automatically adapting to occupants of different body types and improving both comfort and safety. Furthermore, the system utilizes wear-resistant and fatigue-resistant materials and can adapt to changes in vehicle temperature, humidity, and vibration, ensuring long-term stable operation.

[0093] Based on the same concept, this application also provides a vehicle, including: the seat belt height adjustment system as described above.

[0094] The beneficial effects of this vehicle are the same as those of the seat belt height adjustment system in the above embodiments, and will not be repeated here.

[0095] 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 application (including the claims) is limited to these examples; within the scope of this invention, 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 the different aspects of this invention as described above, which are not provided in the details for the sake of brevity.

[0096] The embodiments of this utility model are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, 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 height adjustment device, characterized in that, include: A vehicle body trim panel, wherein an opening area is provided on the vehicle body trim panel; The skateboard assembly is slidably connected to the vehicle body trim panel and has a seat belt guide opening opposite to the opening area for threading the seat belt. A drive mechanism is connected to the skateboard assembly and can drive the skateboard assembly to move and position relative to the vehicle body trim panel in a first direction to change the height of the seat belt guide opening; Wherein, the first direction is the height direction of the seat belt.

2. The seat belt height adjustment device according to claim 1, characterized in that, The vehicle body trim panel includes an outer side and an inner side that are arranged opposite to each other. The slide plate assembly includes a trim panel slide plate. The trim panel slide plate is slidably connected to the inner side and has the seat belt guide opening thereon. At least a portion of the trim panel slide plate is used to cover the opening area and is exposed relative to the vehicle body trim panel.

3. The seat belt height adjustment device according to claim 2, characterized in that, The drive mechanism also includes a bracket and a sliding plate. One side of the bracket is used to connect to the vehicle body, and the opposite side is slidably connected to the sliding plate. The side of the sliding plate away from the bracket is fixedly connected to the trim panel slide plate.

4. The seat belt height adjustment device according to claim 3, characterized in that, The sliding plate has a mounting seat protruding towards the decorative panel slide plate on the side away from the bracket, and the decorative panel slide plate is fixedly connected to the sliding plate through the mounting seat.

5. The seat belt height adjustment device according to claim 3, characterized in that, The driving mechanism includes a reel that is driven to rotate by a driving component, as well as a first cable and a second cable; one end of the first cable is connected to the reel, and the other end is connected to the first end of the sliding plate; one end of the second cable is connected to the reel, and the other end is connected to the second end of the sliding plate. During the process of the drive unit driving the reel to rotate, one of the first cable and the second cable is in a winding state and the other is in an unwinding state; the first end and the second end are the two ends of the sliding plate that are sequentially opposite each other in the first direction.

6. The seat belt height adjustment device according to claim 5, characterized in that, The bracket is provided with a limiting member with a through hole at the second end near the sliding plate. The second end of the sliding plate is provided with a mounting post protruding away from the decorative panel slide plate. After the second cable passes through the through hole of the limiting member, it is fixedly connected to the second end of the sliding plate through the mounting post.

7. The seat belt height adjustment device according to claim 3, characterized in that, The decorative panel skateboard is provided with a guide plate at the safety belt guide opening. The guide plate includes a plate body and a main guide opening located on the plate body. The plate body is installed on the side of the decorative panel skateboard near the bracket. The main guide opening is connected to the safety belt guide opening for the safety belt to be threaded through.

8. The seat belt height adjustment device according to claim 1, characterized in that, The skateboard assembly is equipped with an electrically adjustable switch for adjusting the drive mechanism; or, The vehicle body trim panel is equipped with an electric adjustment switch for adjusting the drive mechanism.

9. A seatbelt height adjustment system, characterized in that, include: The seat belt height adjustment device, the image acquisition device located in the driver's cab, and the control unit as described in any one of claims 1-8; The control unit is connected to the drive component of the seat belt height adjustment device and is used to control the drive component to operate after the image acquisition device acquires and confirms the relative position of the occupant's shoulder and the seat belt.

10. A vehicle, characterized in that, include: The seat belt height adjustment system as described in claim 9.

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