A structure and assembly method for preventing seat belts from being crushed by the backrest

Abstract

This invention discloses a structure and assembly method for preventing seat belts from being squeezed by the backrest. The structure includes a guide and limiting component for the rear seat seat belt to pass through. The backrest of the rear seat is provided with a backrest unlocking cover for backrest flip-up unlocking. The guide and limiting component is integrated into the backrest unlocking cover. The backrest unlocking cover includes a backrest unlocking cover cover and a backrest unlocking cover base assembled together. The backrest unlocking cover base is fixed to a supporting back plate by fasteners, and the guide and limiting component is engaged with the backrest unlocking cover base. The integrated design of the guide and limiting component for preventing seat belt compression by the backrest, with the guide and limiting component engaged with the backrest unlocking cover base and fixed to the supporting back plate by fasteners, results in a compact, stable, and reliable structure.

Description

Technical Field

[0001] This invention relates to the field of automotive seat technology, and in particular to a structure and assembly method for preventing seat belts from being squeezed by the backrest. Background Technology

[0002] As people's awareness of comfort increases, cars are not only a means of transportation but also an essential way to enjoy life. As one of the most important components of car interiors, car seats are seeing increasingly higher demands for personalized functionality and overall comfort, particularly for rear-seat comfort and operation. Currently, during the rear seatback folding process, the outer seatbelt webbing gets stuck between the backrest and the C-pillar trim. If the webbing isn't pulled out during the backrest locking process, the seatbelt cannot be used properly, leading to significant complaints and inconvenience.

[0003] For example, Chinese patent CN214565182U discloses a seat belt webbing guide structure, which includes a guide body, a first mounting base, and a second mounting base. The first mounting base is fixed to the seat back, and the second mounting base is fixed to the interior trim. When the seat belt webbing is worn, the guide body is detachably connected to the first mounting base, and when the seat belt webbing is not worn, the guide body is detachably connected to the second mounting base. When the seat back flips over, the seat belt force is relatively large, and the stability and reliability are relatively poor. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a structure and assembly method for preventing seat belts from being squeezed by the backrest, thereby achieving integrated design and ensuring stability and reliability.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] A structure for preventing seat belts from being squeezed by a backrest includes a guide limiter for the rear seat seat belt to pass through, and a backrest unlock cover for backrest flipping and unlocking is provided on the backrest of the rear seat, the guide limiter being integrated into the backrest unlock cover.

[0007] The guide limiting member is provided with a protrusion, and the protrusion is provided with a guide opening for the seat belt to pass through. The guide limiting member is provided with an operation through hole corresponding to the unlocking groove of the backrest unlocking cover.

[0008] The lower part of the guide limiting component is fixed to the backrest unlocking cover by a snap-fit ​​structure.

[0009] It also includes a support back plate, which is welded to the backrest of the backrest. The backrest unlocking cover and guide limiter are both connected to the support back plate by fasteners.

[0010] The backrest unlock cover includes a backrest unlock cover and a backrest unlock cover base assembled together. The backrest unlock cover base is fixed to the support back plate by fasteners, and the guide limiter is locked on the backrest unlock cover base.

[0011] The support back plate is provided with ribs, a welding bonding surface is formed on the support back plate at the lower part of the ribs, and a positioning bracket is provided at the edge of the welding bonding surface.

[0012] One side of the support back plate is provided with a bent side plate, and the top of the side plate is provided with a support top plate. The guide limiting component is fixed to the support top plate by fastening bolts.

[0013] The backrest unlock cover base is equipped with a positioning card, and the upper edge of the support back plate is equipped with a card slot that matches the positioning card.

[0014] The guide limiting component has a plug corresponding to the fastening bolt, and the edge of the plug has a groove.

[0015] An assembly method for the structure that prevents the backrest from compressing the seat belt includes the following steps:

[0016] S1. Weld the backrest support to the backrest panel of the rear seat and fasten the backrest unlock cover base to the backrest support.

[0017] S2. Assemble the backrest unlock cover with the backrest unlock cover base, assemble the backrest foam with the backrest panel, and then assemble the backrest cover, ensuring that the backrest foam and the backrest cover do not obstruct the mounting bolts.

[0018] S3. Connect the guide limiter to the backrest unlock cover base, and fasten the guide limiter to the support back plate with the fastening bolts. Install the plug on the guide limiter at the position corresponding to the fastening bolt.

[0019] S4. Pass the rear seat belt through the guide opening of the guide limiter.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] The structure and assembly method for preventing the backrest from squeezing the seat belt are reasonably designed. The guide limiter and the backrest unlock cover are integrated to prevent the backrest from squeezing the seat belt. The guide limiter is snapped on the base of the backrest unlock cover and fixed to the support back plate by fasteners. The structure is compact, stable and reliable. Attached Figure Description

[0022] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0023] Figure 1 This is a partial axial view of the backrest assembly of the present invention.

[0024] Figure 2 This is a partial schematic diagram of the assembly of the guide and limiting component of the present invention.

[0025] Figure 3 This is a schematic diagram of the guide and limiting component assembly of the present invention.

[0026] Figure 4 This is a rear view of the guide and limiting component assembly of the present invention.

[0027] Figure 5 This is a left view of the guide and limiting component assembly of the present invention.

[0028] Figure 6 This is a right view of the guide and limiting component assembly of the present invention.

[0029] Figure 7 This is a top view of the guide and limiting component assembly of the present invention.

[0030] Figure 8 This is a schematic diagram of the installation of the plug according to the present invention.

[0031] Figure 9 This is a schematic diagram of the back of the plug installed according to the present invention.

[0032] Figure 10 This is the main view of the unlocked cover of the present invention.

[0033] Figure 11 Left view of the unlocked cover of this invention.

[0034] Figure 12 This is a top view of the unlocked cover base of the present invention.

[0035] Figure 13 This is the main view of the unlocked cover base of the present invention.

[0036] Figure 14 Left view of the unlocked cover base of the present invention.

[0037] Figure 15 This is the main view of the supporting backplate of the present invention.

[0038] Figure 16 This is a schematic diagram of the fastening bolt of the present invention.

[0039] In the picture:

[0040] 10- Rear seat backrest, 11- Seat belt,

[0041] 100-Guide limiting component, 200-Plug, 300-Backrest unlocking cover, 400-Backrest unlocking cover base, 401-Inner locking structure, 402-Outer locking structure, 403-Base fixing lug, 500-Supporting back plate, 501-Side plate, 502-Rib, 503-Base fixing hole, 504-Guide limiting component fixing hole, 505-Slot, 600-Fasting bolt. Detailed Implementation

[0042] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0043] like Figures 1 to 16 As shown, the structure for preventing the seat belt from being squeezed by the backrest includes a guide and limiting member 100 for the rear seat seat belt 11 to pass through. The rear seat backrest 10 is provided with a backrest unlocking cover for the rear seat backrest to flip and unlock. The guide and limiting member 100 is integrated into the backrest unlocking cover, which is integrated and has a compact structure. When the rear seat backrest flips, the guide and limiting member guides and limits the rear seat belt, so that the seat belt flips synchronously with the seat backrest, avoiding the seat belt being trapped between the backrest and the C-pillar guard plate of the car, and ensuring the normal use of the seat belt.

[0044] The guide limiter 100 is a one-piece injection molded plastic part, which is easy to mold, has high structural strength, and relatively low cost. The overall structure of the guide limiter is square. A protrusion is provided on the rear part of the guide limiter. The protrusion has a guide opening in the front and back direction for the seat belt to pass through. The top of the guide opening has an opening to facilitate the operation of the seat belt through the guide opening. The inner edge of the guide opening has an arc structure, which can effectively ensure the smooth passage of the seat belt.

[0045] The guide limiter 100 is provided with an operation through hole corresponding to the unlocking groove of the backrest unlocking cover, so that the operator can operate the unlocking button in the unlocking groove through the operation through hole; the operation through hole is a square through hole that is open from top to bottom, and the edge of the operation through hole is arc transition to improve the operating comfort; and the operation through hole and the guide opening on the guide limiter are staggered front and back to ensure the structural strength of the overall guide limiter.

[0046] The lower part of the guide limiter is fixed to the backrest unlock cover via a snap-fit ​​structure, making installation and positioning simple. The backrest panel of the seat back is made of metal, and a support backplate 500 is welded onto the backrest panel. The support backplate 500 is a sheet metal part. Both the backrest unlock cover and the guide limiter are connected to the support backplate via fasteners; the integrated design and connection to the support backplate via fasteners ensure a stable and reliable structure.

[0047] The backrest unlock cover includes a backrest unlock cover 300 and a backrest unlock cover base 400 assembled together. The backrest unlock cover base is a hollow box structure with an opening at the top. The backrest unlock cover is located inside the hollow box. The rotating shaft on the side of the backrest unlock cover is engaged with the shaft hole of the backrest unlock cover base. A snap-lock positioning is provided corresponding to the shaft hole. The backrest unlock cover rotates normally inside the backrest unlock cover base.

[0048] The bottom of the backrest unlock cover base 400 is provided with a protruding base fixing lug 403. The backrest unlock cover base and the base fixing lug are integrally injection molded plastic structures. The base fixing lug is provided with a fixing hole, and the support back plate is provided with a base mounting hole corresponding to the fixing hole. The backrest unlock cover base is fixed by fastening bolts 600 passing through the fixing hole and cooperating with the base mounting hole. Furthermore, the bottom of the backrest unlock cover base is provided with a pair of reinforcing ribs corresponding to the base fixing lug. The base fixing lug is located between the pair of reinforcing ribs, making the structure stable and reliable.

[0049] Furthermore, the backrest unlock cover base 400 is equipped with a positioning card, and the upper edge of the support back plate is equipped with a card slot 505 that matches the positioning card. The card slot is an open U-shaped groove. The backrest unlock cover base is initially positioned by the matching positioning card and card slot, and then positioned by fastening bolts. The backrest unlock cover base is hung on the support back plate by the positioning card, making the structure more stable and reliable.

[0050] The guide limiter 100 is secured to the backrest unlock cover base 400. Preferably, the backrest unlock cover base 400 has a set of external locking structures 402 on the outer walls of the two sides opposite the open end. The back of the guide limiter has a clip structure that cooperates with the external locking structure on both sides corresponding to the operation through hole. The structure is compact and the fixation is reliable. Furthermore, the back of the guide limiter has reinforcing ribs evenly distributed around the operation through hole, which effectively improves the structural strength of the guide limiter.

[0051] The inner wall of the backrest unlock cover base has a shaft hole corresponding to the rotation shaft of the backrest unlock cover. The inner wall of the backrest unlock cover base has an inner locking structure 401 located above the shaft hole, which facilitates the insertion of the rotation shaft. Furthermore, the backrest unlock cover base body has a reinforcing rib between the inner locking structure and the outer locking structure to improve structural reliability.

[0052] One side of the support back panel 500 has a bent side panel 501, and the top of the side panel has a support top plate. The support top plate has a guide limiting component fixing hole 504, and the guide limiting component is fixed to the support top plate by fastening bolts. The guide limiting component has a recessed mounting hole, and the recessed structure rests on the support top plate, which provides reliable support for the guide limiting component. The guide limiting component is fixed to the backrest unlock cover base by a snap-fit ​​structure and also fixed to the top plate of the support back panel by a fastening structure. The structure is stable and reliable and not easy to loosen. Furthermore, the guide limiting component has a plug 200 corresponding to the fastening bolt. The edge of the plug has a groove, which is used to remove the plug.

[0053] The support back plate is provided with ribs 502, and a welding contact surface is formed on the support back plate at the lower part of the ribs. The base fixing holes 503 and positioning holes on the support back plate are both set at the upper part of the support back plate. The ribs are located between the lower contact surface and the upper part to avoid welding deformation from affecting the accuracy of the upper fixing structure. A positioning bracket is provided at the edge of the welding contact surface for reliable fixing.

[0054] The present invention has a reasonable structural design to prevent the backrest from squeezing the seat belt. The guide limiter and the backrest unlock cover are integrated to prevent the backrest from squeezing the seat belt. The guide limiter is stuck on the base of the backrest unlock cover and fixed to the support back plate by fasteners. The structure is compact, stable and reliable.

[0055] The assembly method of the structure for preventing the seat belt from being crushed by the backrest of the present invention includes the following steps:

[0056] S1. Weld the backrest support to the backrest panel of the rear seat and fasten the backrest unlock cover base to the backrest support.

[0057] S2. Assemble the backrest unlock cover with the backrest unlock cover base, assemble the backrest foam with the backrest panel, and then assemble the backrest cover, ensuring that the backrest foam and the backrest cover do not obstruct the mounting bolts.

[0058] S3. Connect the guide limiter to the backrest unlock cover base, and fasten the guide limiter to the support back plate with the fastening bolts. Install the plug on the guide limiter at the position corresponding to the fastening bolt.

[0059] S4. Pass the rear seat belt through the guide opening of the guide limiter.

[0060] The preferred assembly method of this invention is as follows:

[0061] During assembly, the support back panel and the backrest panel are first welded together; then the backrest unlock cover base is fastened to the support back panel; the two clamps at the rear end of the backrest unlock cover base are aligned with the two holes at the upper end of the support back panel and snapped together to ensure that the backrest unlock cover base and the support back panel are completely fitted together; the unlock cover base and the support back panel are then fixed together by the unlock cover base mounting bolts.

[0062] Then assemble the backrest unlock cover with the backrest unlock cover base. Align the rotating shaft of the backrest unlock cover with the corresponding buckle on the backrest unlock cover base, press the backrest unlock cover down to ensure that the rotating shaft of the backrest unlock cover and the backrest unlock cover base are properly in place, and move the backrest unlock cover back and forth to ensure that the backrest unlock cover can rotate normally.

[0063] Next, assemble the backrest foam to the backrest panel, and then assemble the backrest cover, ensuring that the backrest foam and cover do not obstruct the mounting bolts. Finally, assemble the guide limit plastic parts of the backrest, and snap them into the backrest unlock cover base. First, snap the two clips on the right side of the plastic parts into the corresponding clamps on the backrest unlock cover base. Then, snap the two open clips on the left side of the guide limit plastic parts into the two corresponding clamps on the backrest unlock cover base. Next, align the corresponding bolt mounting holes on the guide limit plastic parts with the holes on the support backrest panel, and tighten the plastic parts to the support backrest panel using the fastening bolts. Finally, install the end caps at the corresponding bolt positions on the guide limit plastic parts.

[0064] Finally, insert the seatbelt webbing through the webbing guide hole opening at the top of the guide limit plastic piece, and pull the webbing to keep it smooth.

[0065] This invention solves the problem of webbing being squeezed by the backrest. A guide and limiting plastic component is added to the upper part of the rear seat backrest to guide the webbing. When the backrest is flipped, the webbing and the backrest move simultaneously, completely eliminating the risk of squeezing from a structural perspective. The lower part of the guide and limiting component is snapped into the base of the backrest unlocking cover, and at the same time, the lower part of the guide and limiting component is connected to the sheet metal part of the supporting back panel, making the structure stable and reliable. Furthermore, the guide and limiting component and the backrest unlocking cover are integrated into the structure, making the structure compact and easy to arrange and install.

[0066] The above description is merely an illustration of preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0067] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A structure for preventing seat belt compression by a backrest, comprising a guide and limiting member for the passage of the rear seat seat belt, wherein the backrest of the rear seat is provided with a backrest unlocking cover for backrest flip-up unlocking, characterized in that: The guide limiting component is integrated into the backrest unlocking cover; The guide limiting component has a protrusion with a guide opening for the seat belt to pass through, and an operation through hole corresponding to the unlocking groove of the backrest unlocking cover. The lower part of the guide limiting component is fixed to the backrest unlocking cover by a snap-fit ​​structure. It also includes a support back plate, which is welded to the backrest of the backrest. Both the backrest unlocking cover and the guide limiting component are connected to the support back plate by fasteners. The backrest unlock cover includes a backrest unlock cover and a backrest unlock cover base assembled together. The backrest unlock cover base is fixed to the support back plate by fasteners, and the guide limiter is stuck on the backrest unlock cover base. The backrest unlock cover base is a hollow box structure with an opening at the top. The backrest unlock cover is located inside the hollow box. The rotating shaft on the side of the backrest unlock cover is matched with the shaft hole of the backrest unlock cover base. The corresponding shaft hole is set with a buckle for positioning. The backrest unlock cover rotates normally inside the backrest unlock cover base.

2. The structure for preventing the seatbelt from being crushed by the backrest as described in claim 1, characterized in that: The support back plate is provided with ribs, a welding bonding surface is formed on the support back plate at the lower part of the ribs, and a positioning bracket is provided at the edge of the welding bonding surface.

3. The structure for preventing the seatbelt from being crushed by the backrest as described in claim 1, characterized in that: One side of the support back plate is provided with a bent side plate, and the top of the side plate is provided with a support top plate. The guide limiting component is fixed to the support top plate by fastening bolts.

4. The structure for preventing the seatbelt from being crushed by the backrest as described in claim 3, characterized in that: The backrest unlock cover base is equipped with a positioning card, and the upper edge of the support back plate is equipped with a card slot that matches the positioning card.

5. The structure for preventing the seatbelt from being crushed by the backrest as described in claim 3, characterized in that: The guide limiting component has a plug corresponding to the fastening bolt, and the edge of the plug has a groove.

6. A method for assembling the structure for preventing the backrest from compressing the seat belt as described in any one of claims 1 to 5, characterized in that: The assembly method includes the following steps: S1. Weld the backrest support to the backrest panel of the rear seat and fasten the backrest unlock cover base to the backrest support. S2. Assemble the backrest unlock cover with the backrest unlock cover base, assemble the backrest foam with the backrest panel, and then assemble the backrest cover, ensuring that the backrest foam and the backrest cover do not obstruct the mounting bolts. S3. Connect the guide limiter to the backrest unlock cover base, and fasten the guide limiter to the support back plate with the fastening bolts. Install the plug on the guide limiter at the position corresponding to the fastening bolt. S4. Pass the rear seat belt through the guide opening of the guide limiter.

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