reclining backrest

Abstract

The utility model relates to a liftable backrest, including framework, with the sliding support of framework installation connection, the sliding support is set up backrest cover plate, and the self -lock connection through pin shaft group is realized between backrest cover plate and sliding support, the pin shaft group includes: pin shaft body, passes through backrest cover plate and sliding support, and with backrest cover plate, sliding support between movable joint, spring, connect on pin shaft body, spring both ends respectively resist and touch backrest cover plate inner wall and sliding support outer wall, and the elastic reset force of spring pushes pin shaft and passes through the limiting backrest cover plate and sliding support. The utility model has adjustable locking mechanism, satisfies the demand of various body -sized users in various use scenes, improves the user experience of product.

Description

Technical Field

[0001] This utility model relates to the technical field of two-wheeled vehicle seat accessories, and in particular to a height-adjustable backrest. Background Technology

[0002] Currently, most motorcycle backrest supports on the market, both domestically and internationally, are not height-adjustable. Common front backrest systems fall into two main categories: separate and integrated. However, both are fixed structures and cannot be height-adjusted to meet the customer's specific needs.

[0003] Split-type backrest system: The backrest body and the frame are detachable and combined structures, usually fixed by bolts, clips and other connectors. Although it has a certain degree of flexibility in installation and disassembly, the connection point between the frame and the vehicle body and the joint position between the backrest and the frame are fixed designs. Once assembled, the overall height of the backrest is completely locked and cannot be adjusted up or down according to the user's back curve or sitting habits.

[0004] Integrated backrest system: The backrest and frame are integrated using a single molding process (such as welding or injection molding), resulting in a more stable structure, but it also lacks height adjustment. This design completely binds the backrest's support height to the frame's dimensions, forcing users to passively adapt to preset height parameters. For taller or shorter cyclists, this can easily lead to backrest support misalignment (too high and hitting the neck, too low and losing lumbar support).

[0005] This highly standardized design makes it difficult to meet the personalized needs of users of different heights and riding postures for backrest support height in actual use. Utility Model Content

[0006] In response to the shortcomings of the existing production technology, the applicant provides a reasonably structured height-adjustable backrest that allows for free height adjustment, meeting the needs of users of various body types in various usage scenarios.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A height-adjustable backrest includes a frame and a sliding bracket mounted on the frame. A backrest cover is fitted onto the sliding bracket, and the backrest cover and the sliding bracket are self-lockingly connected by a pin assembly.

[0009] The pin assembly includes:

[0010] The pin body passes through the backrest cover and the sliding bracket, and is movably connected to both the backrest cover and the sliding bracket.

[0011] A spring is connected to the pin body. The two ends of the spring abut against the inner wall of the backrest cover and the outer wall of the sliding bracket, respectively. The elastic restoring force of the spring pushes the pin through the limiting backrest cover and the sliding bracket.

[0012] As a further improvement to the above technical solution:

[0013] The sliding bracket includes:

[0014] The mounting section is securely connected to external body parts.

[0015] An adjustment section extends upward from the mounting section, and the adjustment section is provided with a plurality of adjustment through holes arranged in a linear array on a vertical line.

[0016] The adjustment section avoids the installation section towards the rear of the vehicle, forming a curved backrest.

[0017] The adjustment section has a guide groove on the side facing the rider.

[0018] The guide grooves are symmetrically arranged on both sides of the adjustment through hole.

[0019] A positioning hole is provided on the side of the backrest cover facing the rear of the vehicle, and the pin body passes through the positioning hole and any one of the adjustment holes.

[0020] The size of the backrest cover facing the front of the vehicle is larger than the size of the backrest cover facing the rear of the vehicle.

[0021] On the side of the backrest cover facing the front of the vehicle, there is a raised section that falls into a guide groove.

[0022] The backrest cover and sliding bracket are both made of nylon fiberglass.

[0023] The adjustable backrest is covered with a decorative shell, and the side of the decorative shell facing the rider is filled with padding.

[0024] The beneficial effects of this utility model are as follows:

[0025] This utility model has a compact and reasonable structure and is easy to operate. It uses modified nylon and glass fiber materials to make the main structural components, so that the product is lightweight while having a certain degree of rigidity and formability.

[0026] This utility model features an adjustable locking mechanism that utilizes a pin assembly that automatically resets after being pulled, enabling the backrest to be raised and lowered freely. This meets the needs of users of various body types in various usage scenarios and enhances the user experience of the product.

[0027] In this invention, the pin assembly passes through the positioning hole and any one of the adjustment through holes when no force is applied. When a pulling force is applied, it disengages from the adjustment through hole, thus achieving sliding adjustment. After the pulling force is released, the spring connected to the pin body returns to its original position. The spring abuts against one end of the backrest cover plate and pushes one end of the pin body, causing the pin body to be pushed into the corresponding adjustment through hole by the spring, thus achieving repositioning. Attached Figure Description

[0028] Figure 1 This is a cross-sectional view of the backrest of this utility model.

[0029] Figure 2 This is a schematic diagram of the overall structure of the backrest of this utility model.

[0030] Figure 3 This is a three-dimensional view of the sliding support structure of this utility model.

[0031] Figure 4 This is a perspective view of the sliding bracket of this utility model from another angle.

[0032] Figure 5 This is a schematic diagram of the backrest cover structure of this utility model.

[0033] The components include: 1. Filler; 2. Frame; 3. Backrest cover; 4. Decorative shell; 5. Sliding bracket; 6. Pin assembly;

[0034] 301. Protrusion; 302. Positioning hole;

[0035] 501. Guide groove; 502. Adjustment through hole; 503. Mounting part; 504. Adjustment part;

[0036] 601. Pin body; 602. Spring; Detailed Implementation

[0037] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0038] like Figures 1-5 As shown, the height-adjustable backrest of this embodiment includes a frame 2 and a sliding bracket 5 connected to the frame 2. A backrest cover plate 3 is sleeved on the sliding bracket 5, and the backrest cover plate 3 and the sliding bracket 5 are self-lockingly connected by a pin assembly.

[0039] The pin assembly includes:

[0040] The pin body passes through the backrest cover 3 and the sliding bracket 5, and is movably connected to the backrest cover 3 and the sliding bracket 5.

[0041] Spring 602 is connected to the pin body. The two ends of spring 602 abut against the inner wall of backrest cover 3 and the outer wall of sliding bracket 5 respectively. The elastic restoring force of spring 602 pushes the pin through the limiting backrest cover 3 and sliding bracket 5.

[0042] The sliding bracket 5 includes:

[0043] The mounting section is securely connected to external body parts.

[0044] The adjustment section extends upward from the installation section and is provided with several linear arrays of adjustment through holes 502 on a vertical line.

[0045] The adjustment section moves away from the installation section towards the rear of the vehicle, forming a curved backrest.

[0046] The adjustment section has a guide groove 501 on the side facing the rider.

[0047] The guide grooves 501 are symmetrically arranged on both sides of the adjustment through hole 502.

[0048] A positioning hole 302 is provided on the side of the backrest cover 3 facing the rear of the vehicle, and the pin body passes through the positioning hole 302 and any one of the adjustment through holes 502.

[0049] The size of the backrest cover 3 facing the front of the vehicle is larger than the size of the backrest cover 3 facing the rear of the vehicle.

[0050] On the part of the backrest cover 3 facing the front of the vehicle, there is a protrusion 301 that falls into the guide groove 501.

[0051] The backrest cover 3 and the sliding bracket 5 are both made of nylon fiberglass.

[0052] The adjustable backrest is covered with a decorative shell 4, and the side of the decorative shell 4 facing the rider is filled with padding material 1.

[0053] The specific structure and adjustment process of this application are as follows:

[0054] like Figure 2 The diagram shown is a schematic representation of the overall structure of the backrest of this application. Figure 1 This is a sectional view of the backrest. The backrest includes the frame 2, which serves as the overall load-bearing foundation for the backrest.

[0055] A sliding bracket 5 is installed on the frame 2, and the sliding bracket 5 is connected to the frame 2 by fastening screws. The sliding bracket 5 includes a mounting part 503 and an adjusting part 504 that extends upward from the mounting part 503 and bends towards the rear of the vehicle to avoid obstruction. A guide groove 501 is provided on the side of the adjusting part 504 facing the rider. Figure 3 and Figure 4As shown, two guide grooves 501 are provided, and the two guide grooves 501 are arranged parallel to each other. Several adjustment through holes 502 are provided between the two guide grooves 501.

[0056] Reference Figure 1 and Figure 5 A backrest cover plate 3 is fitted onto the sliding bracket 5. The backrest cover plate 3 is approximately a square ring. Two protrusions 301 are formed on the side of the backrest cover plate 3 facing the guide groove 501. The protrusions 301 fall into the corresponding guide grooves 501, serving as a limiting function. A positioning hole 302 is provided on the side of the backrest cover plate 3 facing the rear of the vehicle. When the positioning hole 302 and any one of the adjustment through holes 502 are coaxial, the pin assembly 6 passes through the positioning hole 302 and the coaxial adjustment through hole 502, serving as a limiting function.

[0057] The pin assembly 6 includes a pin body 601 and a spring 602 passing through the pin. The two ends of the spring 602 abut against the backrest cover 3 and the sliding bracket 5, respectively.

[0058] The entire backrest is covered with leather and filled with flexible padding to ensure comfort.

[0059] During installation, the pin body 601 is positioned by passing through the backrest cover plate 3, and the sliding bracket 5 is passed through the guide groove 501 of the backrest cover plate 3. Then, the above components are fixed to the plastic frame 2 through the bolt positions reserved on the mounting part 503. The pin body 601 is then released, and the pin body 601 returns to its original position by the spring 602, thus achieving the effect of fixation.

[0060] In the initial state, the pin body 601 of the pin assembly 6 passes through an adjustment through hole 502 and a positioning hole 302. When the height needs to be adjusted, the pin assembly 6 is pulled outward. At this time, the spring 602 is compressed, and after the pin body 601 is disengaged from the adjustment through hole 502, it still falls into the fixing hole. At this time, the backrest cover 3 can slide relative to the sliding bracket 5 to achieve up and down sliding. At the same time, the relative position between the backrest cover 3 and the sliding bracket 5 is limited by the guide groove 501 to ensure that the operating trajectory of the backrest bracket is controllable and perpendicular to the ground.

[0061] After adjusting the backrest to the desired position, remove the external force pulling the pin body 601. Under the reset action of the spring 602, the pin body 601 is reinserted into an adjustment through hole 502, completing the height adjustment of the backrest.

[0062] In one embodiment of this application, the sliding bracket 5 and the backrest cover 3 are made of nylon material. By adding glass fiber to the raw materials, lightweighting is achieved while maintaining a certain degree of rigidity and formability.

[0063] The advantage of this application is that the backrest achieves the locking effect of the backrest assembly through the pin group 6 and the adjustment through hole 502 on the sliding bracket 5, and the backrest can be moved controllably through the guide groove 501 between the sliding bracket 5 and the backrest cover plate 3. At the same time, the component is hidden by a specially made decorative shell 4, which facilitates height adjustment and does not affect comfort.

[0064] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A height-adjustable backrest, characterized in that: It includes a frame (2) and a sliding bracket (5) installed and connected to the frame (2). A backrest cover plate (3) is fitted on the sliding bracket (5). The backrest cover plate (3) and the sliding bracket (5) are connected by a pin assembly to achieve a self-locking connection. The pin assembly includes: The pin body passes through the backrest cover (3) and the sliding bracket (5), and is movably connected to the backrest cover (3) and the sliding bracket (5). A spring (602) is connected to the pin body. The two ends of the spring (602) abut against the inner wall of the backrest cover (3) and the outer wall of the sliding bracket (5) respectively. The elastic restoring force of the spring (602) pushes the pin through the limiting backrest cover (3) and the sliding bracket (5).

2. The height-adjustable backrest as described in claim 1, characterized in that: The sliding bracket (5) includes: a mounting section, which is fastened to external vehicle body parts. An adjustment section extends upward from the mounting section, and the adjustment section is provided with a plurality of linearly arrayed adjustment through holes (502) on a vertical line.

3. The height-adjustable backrest as described in claim 2, characterized in that: The adjustment section avoids the installation section towards the rear of the vehicle, forming a curved backrest.

4. The height-adjustable backrest as described in claim 2, characterized in that: The adjustment section has a guide groove (501) on the side facing the rider.

5. The height-adjustable backrest as described in claim 4, characterized in that: The guide groove (501) is symmetrically arranged on both sides of the adjustment through hole (502).

6. The height-adjustable backrest as described in claim 2, characterized in that: The backrest cover (3) has a positioning hole (302) on the side facing the rear of the vehicle, and the pin body passes through the positioning hole (302) and any one of the adjustment through holes (502).

7. The height-adjustable backrest as described in claim 6, characterized in that: The size of the backrest cover (3) facing the front of the vehicle is larger than the size of the backrest cover (3) facing the rear of the vehicle.

8. The height-adjustable backrest as described in claim 7, characterized in that: On the part of the backrest cover (3) facing the front of the vehicle, there is a protrusion (301) that falls into the guide groove (501).

9. The height-adjustable backrest as described in claim 1, characterized in that: The backrest cover (3) and sliding bracket (5) are both made of nylon fiberglass.

10. The height-adjustable backrest as described in claim 1, characterized in that: The adjustable backrest is fitted with a decorative shell (4), and the side of the decorative shell (4) facing the rider is filled with padding (1).

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