A new adjustable backrest structure

Abstract

The utility model belongs to two -wheeled vehicle accessory technical field, concretely relates to a novel adjustable backrest structure, including support, the inside fixed mounting of support has base assembly through backrest assembly, wherein, backrest assembly includes fixed mounting in the inside of support backrest framework, the top sliding installation of backrest framework has backrest shell, the inside rotation installation of backrest shell has adjusting lever through axle piece, the inside of adjusting lever is provided with torsional spring, and torsional spring is used for pushing the clamping block and the clamping groove joint. The utility model can realize the height adjustment of base assembly through the cooperation of the one end clamping block and the clamping groove of adjusting lever of backrest assembly, thereby being applicable to different height crowd, and the elastic shock attenuation grid in base assembly is increased and can further improve the use experience.

Description

Technical Field

[0001] This utility model belongs to the technical field of two-wheeled vehicle accessories, specifically relating to a novel adjustable backrest structure. Background Technology

[0002] As a convenient mode of transportation, the comfort of two-wheeled vehicles is increasingly valued by users. When two-wheeled vehicles are in motion and carrying passengers in the back, most cruiser vehicles on the market are equipped with or have a backrest installed. The backrest not only supports the waist and improves comfort, but also provides a certain degree of safety.

[0003] Problems with existing technology: Currently, most backrests on the market are fixed. The disadvantages of fixed backrests are obvious: they cannot be adjusted and are difficult to adapt to people of different heights, resulting in a poor user experience. At the same time, existing backrests do not absorb the dynamic impact and vibration generated on bumpy roads well, and the vibration is directly transmitted to the rider's back, which can easily cause fatigue and discomfort. Utility Model Content

[0004] The purpose of this utility model is to provide a novel adjustable backrest structure, which can adjust the height of the base assembly by the cooperation of the locking block and the locking slot at one end of the adjusting rod of the backrest assembly, thus making it suitable for people of different heights. Furthermore, the addition of an elastic shock-absorbing mesh in the base assembly can further improve the user experience.

[0005] The specific technical solution adopted by this utility model is as follows: A novel adjustable backrest structure, including a support frame; The base assembly is fixedly installed inside the bracket via the backrest assembly; The backrest assembly includes a backrest frame fixedly installed inside the bracket. A backrest shell is slidably installed on the top of the backrest frame. An adjustment rod is rotatably installed inside the backrest shell via a shaft. A torsion spring is installed inside the adjustment rod. The torsion spring is used to push the locking block to engage with the locking slot.

[0006] One side of the backrest shell is fixedly installed to the connecting seat via a guide plate. The connecting seat and the base assembly are an integral structure, which allows the backrest shell to drive the base assembly to move vertically outside the backrest frame.

[0007] Three sets of recessed slots are arranged vertically on one side surface of the base assembly. Two sets of slots are provided for the connecting seat and the guide plate respectively, and the slots are located between the two sets of connecting seats.

[0008] The backrest frame has a sliding groove inside, the guide plate is slidably installed with the backrest frame through the sliding groove, and the backrest shell is fixedly installed with the base assembly.

[0009] The backrest frame has a rectangular through groove inside, and the other end of the adjustment rod passes through the backrest frame through the through groove.

[0010] An elastic shock-absorbing mesh is fixedly installed inside the base assembly. A highly breathable pad is abutted against the surface of the elastic shock-absorbing mesh, and a highly resilient breathable sponge is provided on one side of the highly breathable pad.

[0011] The elastic damping mesh is composed of a multi-mesh structure consisting of multiple horizontal and vertical ribs.

[0012] The technical effects achieved by this utility model are as follows: This invention utilizes a shaft installed inside the backrest frame, with an adjusting rod rotatably mounted on its surface. The adjusting rod contains a torsion spring. Under the action of the torsion spring, a locking block at one end of the adjusting rod engages with a slot on the surface of the base assembly, thus fixing the base assembly. Pressing down on the other end of the adjusting rod separates the locking block from the slot, and the adjustment rod, in conjunction with the shaft, compresses the torsion spring. Since the slot houses the base assembly, after vertically adjusting the backrest by pushing the backrest shell, the locking slot can be replaced by releasing the adjusting rod, thereby adjusting the backrest height to suit users of different heights.

[0013] This invention utilizes an elastic damping mesh installed inside the base assembly. This mesh consists of multiple horizontally and vertically intersecting ribs made of thermoplastic polyurethane elastomer rubber. A highly breathable liner is placed on one side of the mesh, while a highly resilient breathable sponge is placed on the other side. All three are externally wrapped with a skin. Therefore, the elastic damping mesh, as an independent elastic structural layer, not only deforms to absorb energy when impacted, but also efficiently disperses and buffers vibrations through the twisting and recovery of the ribs. Compared to traditional sponge structures, it provides better filtering of road bumps. Attached Figure Description

[0014] Figure 1 This is a three-dimensional view of the overall installation structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the backrest assembly in this utility model; Figure 3 This is a schematic diagram of the backrest assembly structure in this utility model; Figure 4 This is a schematic diagram of the base assembly structure in this utility model; Figure 5 This is a schematic diagram of the installation structure of the elastic damping mesh in this utility model.

[0015] The attached diagram lists the components represented by each number as follows: 1. Bracket; 2. Backrest assembly; 21. Backrest shell; 22. Shaft; 23. Torsion spring; 24. Adjusting rod; 25. Locking block; 26. Locking slot; 27. Backrest frame; 3. Base assembly; 31. High breathability padding; 32. Elastic shock-absorbing mesh; 4. Guide plate; 5. Connecting seat. Detailed Implementation

[0016] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0017] like Figure 1-5 As shown, a novel adjustable backrest structure includes a support 1; The base assembly 3 is fixedly installed inside the bracket 1 via the backrest assembly 2; The backrest assembly 2 includes a backrest frame 27 fixedly installed inside the bracket 1. A backrest shell 21 is slidably installed on the top of the backrest frame 27. An adjustment rod 24 is rotatably installed inside the backrest shell 21 via a shaft 22. A torsion spring 23 is provided inside the adjustment rod 24. The torsion spring 23 is used to push the locking block 25 to engage with the locking slot 26.

[0018] See attached document Figures 1 to 4 In this embodiment, one side of the backrest shell 21 is fixedly installed with the connecting seat 5 via the guide plate 4. The connecting seat 5 and the base assembly 3 are an integral structure, so that the backrest shell 21 drives the base assembly 3 to move vertically outside the backrest frame 27.

[0019] In the above embodiment, the guide plate 4 and the connecting seat 5 are fixedly installed. Therefore, the backrest shell 21 and the base assembly 3 can be connected into a whole through the guide plate 4 and the connecting seat 5. Thus, the base assembly 3 can be adjusted synchronously during the adjustment of the backrest shell 21.

[0020] Furthermore, three sets of recessed slots 26 are arranged vertically on one side surface of the base assembly 3, and a locking block 25 at one end of the adjusting rod 24 can abut against the slot 26. A rectangular through slot is opened inside the backrest frame 27, and the other end of the adjusting rod 24 passes through the backrest frame 27 through the through slot. Therefore, when the other end of the adjusting rod 24 is pressed, the locking block 25 can be separated from the slot 26.

[0021] Furthermore, a torsion spring 23 is provided inside the adjusting rod 24. Therefore, when the other end of the adjusting rod 24 is pressed, the torsion spring 23 can be compressed. When the locking block 25 separates from the locking slot 26, the backrest shell 21 can be pushed to drive the base assembly 3 to adjust its vertical height.

[0022] It should be noted that the guide plate 4 is fixedly installed with the backrest shell 21, and the backrest frame 27 has a sliding groove inside. The guide plate 4 is slidably installed with the backrest frame 27 through the sliding groove. Therefore, the movement of the backrest shell 21 and the base assembly 3 can be guided by the cooperation of the sliding groove and the guide plate 4, and the adjustment process is more stable and smooth.

[0023] As can be further explained, the backrest assembly 2 and the bracket 1 can be fixedly installed with bolts, and the bracket 1 can be replaced with the corresponding bracket according to different vehicle models, which has high compatibility. At the same time, since the bracket 1, the backrest assembly 2 and the base assembly 3 are all modularly designed, they are easy to disassemble, store and transport.

[0024] See attached document Figure 1 and Figure 5 It is worth noting that an elastic shock-absorbing mesh 32 is fixedly installed inside the base assembly 3, and a high-breathability pad 31 is abutted on the surface of the elastic shock-absorbing mesh 32. A high-resilience breathable sponge is provided on one side of the high-breathability pad 31, and the three are wrapped with a skin to form the base assembly 3.

[0025] Specifically, the elastic damping mesh 32 is composed of multiple transverse and vertical ribs forming a multi-grid structure. As an independent elastic structural layer, the elastic damping mesh 32 can not only deform to absorb energy when subjected to impact, but also efficiently disperse and buffer vibrations through the twisting and recovery of the ribs.

[0026] The working principle of this utility model is as follows: After the bracket 1 corresponding to the vehicle model is installed with the backrest assembly 2, the whole assembly can be installed on the vehicle through the bracket 1. When the adjustment rod 24 is pressed down to drive the locking block 25 to leave the inside of one of the slots 26, the torsion spring 23 can be compressed synchronously through the adjustment rod 24. After the backrest shell 21 is pushed vertically to drive the base assembly 3 to adjust the height vertically, the adjustment rod 24 can be released. Under the reset of the torsion spring 23, the locking block 25 is engaged with the other two slots 26 respectively, thereby realizing adjustment and locking. During the use of the backrest, since the base assembly 3 is provided with an elastic shock-absorbing mesh 32, the twisting and recovery of the multiple ribs of the elastic shock-absorbing mesh 32 can effectively disperse and buffer the vibration brought by the vehicle on bumpy road sections, thereby improving comfort.

[0027] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A novel adjustable backrest structure, characterized by, include: Support (1); The base assembly (3) is fixedly installed inside the bracket (1) via the backrest assembly (2); The backrest assembly (2) includes a backrest frame (27) fixedly installed inside the bracket (1). A backrest shell (21) is slidably installed on the top of the backrest frame (27). An adjusting rod (24) is rotatably installed inside the backrest shell (21) via a shaft (22). A torsion spring (23) is provided inside the adjusting rod (24). The torsion spring (23) is used to push the locking block (25) to engage with the locking groove (26).

2. A novel adjustable backrest structure according to claim 1, characterized in that: One side of the backrest shell (21) is fixedly installed with the connecting seat (5) via the guide plate (4). The connecting seat (5) and the base assembly (3) are an integral structure, so that the backrest shell (21) drives the base assembly (3) to move vertically outside the backrest frame (27).

3. A novel adjustable backrest structure according to claim 2, characterized in that: Three sets of recessed slots (26) are arranged vertically on one side surface of the base assembly (3). The connecting seat (5) and the guide plate (4) are respectively provided with two sets, and the slots (26) are located between the two sets of connecting seats (5).

4. The novel adjustable backrest structure according to claim 2, characterized in that: The backrest frame (27) has a sliding groove inside, the guide plate (4) is slidably installed with the backrest frame (27) through the sliding groove, and the backrest shell (21) is fixedly installed with the base assembly (3).

5. A novel adjustable backrest structure according to claim 2, characterized in that: The backrest frame (27) has a rectangular through groove inside, and the other end of the adjusting rod (24) passes through the backrest frame (27) through the through groove.

6. A novel adjustable backrest structure according to claim 1, characterized in that: An elastic shock-absorbing mesh (32) is fixedly installed inside the base assembly (3). A highly breathable pad (31) is abutted on the surface of the elastic shock-absorbing mesh (32). A highly resilient breathable sponge is provided on one side of the highly breathable pad (31).

7. A novel adjustable backrest structure according to claim 6, characterized in that: The elastic damping mesh (32) is composed of multiple horizontal and vertical ribs forming a multi-mesh structure.

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