An adjustable lumbar support backrest cushion structure

Abstract

The utility model relates to backrest cushion technical field, and disclose a kind of adjustable waist support backrest cushion structure, including backrest mechanism, the backrest mechanism includes the bottom plate for the waist support of rider;And, located bottom plate both sides, curved towards rider wing, in the side edge of the waist of rider formation limiting;Still include fixing mechanism, located bottom plate, connected with tail bracket, the bottom plate is connected with wing using damping pivot, the bending angle of wing on bottom plate is limited at 15-25 °, using wing is located bottom plate both sides, cooperate wing towards the side edge of the waist of rider close, to let wing form side support to the waist of rider, compared with prior art, the device is more comprehensive to the waist support effect of rider, reduce the muscle fatigue caused by its waist deviation, also increase the protection effect to the waist of rider to some extent, improve the safety of riding.

Description

Technical Field

[0001] This utility model relates to the field of backrest cushion technology, specifically an adjustable lumbar support backrest cushion structure. Background Technology

[0002] In the field of two-wheeled vehicles such as motorcycles and electric bicycles, backrest cushions are key components for improving riding comfort and safety. Traditional backrest cushions generally adopt a single curved plate structure, that is, a support body with a fixed curvature made of rigid plastic, covered with flexible materials (such as leather or sponge), and fixed to the rear seat bracket of the vehicle by bolts or buckles.

[0003] However, such traditional structures have significant technical drawbacks, specifically: The backrest is a single flat or curved surface, which can only provide vertical lumbar support and cannot limit the lateral displacement of the driver's and passenger's waist (such as body shift during sharp bends or bumpy roads). The flexible outer layer of the backrest cushion (such as a leather cover) is often glued or sewn together. Disassembly requires damaging the original structure, making maintenance operations such as leather cover replacement and internal sponge cleaning cumbersome and increasing user costs.

[0004] Therefore, an adjustable lumbar support backrest structure is needed to solve the above problems. Utility Model Content

[0005] In order to overcome the above-mentioned technical problems, the purpose of this utility model is to provide an adjustable lumbar support backrest cushion structure to solve the problems mentioned in the background art, which are that traditional backrest cushions generally adopt a single arc-shaped plate structure, which has a weak lateral support effect on the waist, and the outer cover of the backrest cushion is inconvenient to replace.

[0006] This utility model provides the following technical solution: an adjustable lumbar support backrest structure, including a backrest mechanism, wherein the backrest mechanism includes a base plate for supporting the lumbar region of the cyclist; Additionally, the side wings located on both sides of the base plate, curving towards the rider, form a limit on the side of the rider's waist; It also includes a fixing mechanism located on the base plate and connected to the rear support.

[0007] To achieve the above technical solution, side wings are located on both sides of the base plate, and the side wings are close to the side of the rider's waist, so that the side wings can form a side support for the rider's waist. Compared with the existing technology, this device provides more comprehensive support for the rider's waist, reduces muscle fatigue caused by waist displacement, and also increases the protection of the rider's waist to a certain extent, thus improving the safety of riding.

[0008] As a further improvement to this utility model, the base plate and the side wing are connected by a damping pivot.

[0009] The above technical solution allows for manual adjustment of the bending angle of the side wing relative to the base plate.

[0010] As a further improvement to this utility model, the bending angle of the side wing on the base plate is limited to 15-25°.

[0011] To achieve the above technical solution, the rotation of the wing is limited to prevent excessive rotation and a large amount of invalid travel.

[0012] As a further improvement to this utility model, the backrest mechanism also includes a sponge layer located on the lumbar support surface of the base plate, and the sponge layer is recessed to form a covering cavity for the base plate and side wings to be integrally recessed.

[0013] The above technical solutions improve the softness of the lumbar support surface of the base plate, ensuring user comfort.

[0014] As a further improvement to this utility model, an indentation groove is provided at the alignment point between the sponge layer and the damping shaft of the base plate.

[0015] The above technical solution facilitates adaptive deformation of both sides of the sponge layer along with the lateral wings.

[0016] As a further improvement to this utility model, the inner wall of the covering cavity is raised around to form a convex ring frame, and the convex ring frame is inserted into the concave ring groove formed by the recessed edge of the bottom plate and the side wing waist support surface.

[0017] The above technical solution improves the stability of the sponge layer on the base plate.

[0018] As a further improvement to this utility model, the backrest mechanism also includes a leather cover that tightly wraps around the bottom plate and the sponge layer, and the fixing mechanism protrudes from the reserved opening of the leather cover.

[0019] The above technical solution facilitates the covering and protection of the base plate and sponge layer, thereby improving waterproof and dustproof capabilities.

[0020] As a further improvement to this utility model, the leather case is provided with an opening for disassembly, and the opening is sealed with a zipper.

[0021] The above technical solution facilitates the quick replacement of damaged leather cases.

[0022] As a further improvement to this utility model, the fixing mechanism includes a fixing frame located on the back of the base plate and being an integral component, and the fixing frame is provided with mounting holes for mounting on the rear frame of the vehicle with a gasket.

[0023] The above technical solution facilitates the fixing of this device to the bracket at the rear of the vehicle by bolts.

[0024] As a further improvement to this utility model, the fixing frame is provided with a slide rail groove for adjusting the position of the gasket, and a number of abutment strips for pressing the gasket are connected on the inner wall of the slide rail groove.

[0025] The above technical solution improves the stability of the universal gasket in the slide rail groove.

[0026] The technical effects and advantages of this utility model are as follows: This utility model uses side wings located on both sides of the base plate, which are positioned close to the rider's waist to provide lateral support for the rider's waist.

[0027] Compared with the prior art, this device provides more comprehensive lumbar support for cyclists, reduces muscle fatigue caused by lumbar misalignment, and also increases the protection of the cyclist's waist to a certain extent, thus improving cycling safety. Attached Figure Description

[0028] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a three-dimensional back view of the overall structure of this utility model, showing the installation position of the fixing mechanism.

[0030] Figure 2 This is a top-view perspective view of the overall structure of this utility model.

[0031] Figure 3 This is a schematic diagram of the overall structural deformation state of this utility model.

[0032] Figure 4 This is a top-down perspective view of the overall structure of this utility model in an exploded state, showing the installation process of each component.

[0033] Figure 5 This is a top-view perspective of the overall structure of this utility model in an exploded state.

[0034] Figure 6 This is a three-dimensional schematic diagram of the installation process of the fixing mechanism structure of this utility model.

[0035] The names represented by the part numbers in the above diagram are as follows: 100. Backrest mechanism; 111. Base plate; 1011. Side wings; 1012. Recessed annular groove; 112. Sponge layer; 1021. Covering cavity; 1022. Protruding annular frame; 113. Leather sleeve; 1031. Reserved opening; 1032. Zipper; 200. Fixing mechanism; 211. Fixing frame; 2011. Slide rail groove; 2012. Sliding plate; 2013. Abutment strip; Detailed Implementation The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0036] Example: Referring to the accompanying drawings, this utility model provides an adjustable lumbar support backrest structure, including a backrest mechanism 100. The backrest mechanism 100 includes a base plate 111 with an arc-shaped support surface conforming to the curvature of the human lumbar spine. Two side wings 1011 are symmetrically arranged on both sides of the base plate 111 via waterproof damping shafts. The damping shafts can withstand more than 100,000 vibration cycles without maintenance, with a torque attenuation rate of <15%. The base plate 111 and the side wings 1011 are connected by damping shafts, specifically with silicone oil damping. An integrally formed plate-shaped mechanical limiter is provided at the shaft connection, so that the bending angle of the side wings 1011 on the base plate 111 is limited to 15-25°. The backrest mechanism 100 also includes a sponge layer 112 located on the waist support surface of the base plate 111, with a density of 50-60D and an indentation hardness of >120N. The sponge layer 112 is recessed to form a covering cavity 1021 for the base plate 111 and the side wing 1011 to be completely embedded. The sponge layer 112 is provided with an indentation groove at the alignment of the damping pivot of the base plate 111, allowing the sponge to deform synchronously without tearing when the side wing rotates. The inner wall of the covering cavity 1021 is raised around to form a protruding ring frame 1022, and the protruding ring frame 1022 is inserted into the recessed ring groove 1012 formed by the recesses at the edges of the waist support surfaces of the base plate 111 and the side wing 1011. The backrest mechanism 100 also includes a leather cover 113 that tightly covers the bottom plate 111 and the sponge layer 112, and the fixing mechanism 200 is exposed from the reserved opening 1031 of the leather cover 113. The leather cover 113 has an opening for disassembly, and the opening is sealed with a zipper 1032. The zipper 1032 is IPX4 waterproof after being zipped up, and the edge of the reserved opening 1031 is provided with a waterproof flange. It also includes a fixing mechanism 200, located on the base plate 111 and connected to the rear support. The fixing mechanism 200 includes a fixing frame 211 located on the back of the base plate 111 and being an integral component. The fixing frame 211 is provided with mounting holes for mounting the gasket on the rear support. The fixing frame 211 is provided with a sliding rail groove 2011 for adjusting the gasket, and a number of abutment strips 2013 for pressing the gasket are connected to the inner wall of the sliding rail groove 2011.

[0037] During installation, the base plate 111 and side wings 1011 are pressed into the sponge layer 112 and the covering cavity 1021, while ensuring that the protruding ring frame 1022 is inserted into the corresponding concave ring groove 1012, thus connecting the base plate 111 and the sponge layer 112. Then, the leather sleeve 113 is put on the outside of the base plate 111 and the sponge layer 112 from the opening until the inner wall of the leather sleeve 113 is tightly attached to the outside of the base plate 111 and the sponge layer 112. Pull the zipper 1032 to seal the opening of the leather sleeve 113. At this time, the fixing mechanism 200 is exposed from the reserved opening 1031. In use, slide the sliding plate 2012 in the slide rail groove 2011, connect the sliding plate 2012 to the bracket at the rear of the vehicle body with bolts, and finally push and pull the side wing 1011 to form side supports that limit the rider's waist on both sides of the base plate 111.

[0038] In this specification, the terms "an embodiment," "example," "specific example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An adjustable lumbar support backrest cushion structure, characterized in that: Includes a backrest mechanism (100), which includes a base plate (111) for supporting the lumbar region of the rider. In addition, the side wings (1011) located on both sides of the base plate (111) and curved toward the rider form a limit on the side of the rider's waist; It also includes a fixing mechanism (200), located on the base plate (111) and connected to the rear support.

2. The adjustable lumbar support backrest cushion structure according to claim 1, characterized in that: The base plate (111) and the side wing (1011) are connected by a damping shaft.

3. The adjustable lumbar support backrest cushion structure according to claim 2, characterized in that: The bending angle of the side wing (1011) on the base plate (111) is limited to 15-25°.

4. The adjustable lumbar support backrest cushion structure according to claim 1, characterized in that: The backrest mechanism (100) also includes a sponge layer (112) on the waist support surface of the base plate (111), and the sponge layer (112) is recessed to form a covering cavity (1021) for the base plate (111) and the side wings (1011) to be completely embedded.

5. The adjustable lumbar support backrest cushion structure according to claim 4, characterized in that: The sponge layer (112) and the damping shaft of the base plate (111) are provided with an indentation groove.

6. The adjustable lumbar support backrest cushion structure according to claim 5, characterized in that: The inner wall of the enclosing cavity (1021) is raised around to form a protruding ring frame (1022), and the protruding ring frame (1022) is inserted into the recessed ring groove (1012) formed by the recessed edge of the bottom plate (111) and the side wing (1011).

7. The adjustable lumbar support backrest cushion structure according to claim 6, characterized in that: The backrest mechanism (100) also includes a leather cover (113) that tightly covers the bottom plate (111) and the sponge layer (112), and the fixing mechanism (200) is exposed from the reserved opening (1031) of the leather cover (113).

8. The adjustable lumbar support backrest cushion structure according to claim 7, characterized in that: The leather case (113) has an opening for disassembly, and the opening is sealed with a zipper (1032).

9. The adjustable lumbar support backrest cushion structure according to claim 1, characterized in that: The fixing mechanism (200) includes a fixing frame (211) located on the back of the base plate (111) and being an integral component, and the fixing frame (211) is provided with mounting holes for mounting on the rear frame of the vehicle with a gasket.

10. The adjustable lumbar support backrest cushion structure according to claim 9, characterized in that: The fixing frame (211) is provided with a slide rail groove (2011) for adjusting the position of the gasket, and a number of abutment strips (2013) for pressing the gasket are connected on the inner wall of the slide rail groove (2011).

Images