Backrest structure and wheelchair

Abstract

The utility model discloses a backrest structure and wheelchair, backrest structure includes vertical interval arrangement's handrail pole one and handrail pole two, and the horizontal fixed in two handrail pole's cross bar and mounting panel, the middle backrest plate vertical connection cross bar, left and right backrest plate is divided and is arranged at its both sides and is left and right adjustable, and backrest structure still integrates the battery case of adhering middle backrest plate rear side and the tail light of being fixed in mounting panel rear side, and the top of handrail pole articulates foldable handle. The structure can adapt to different body size user, safely stores the battery, improves the night warning effect, and is convenient for folding and storing, is applicable to manual or electric wheelchair, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to wheelchair accessories technology, and in particular to a backrest structure and a wheelchair. Background Technology

[0002] As an important means of transportation for people with mobility impairments (such as the elderly and disabled), the backrest structure of wheelchairs directly affects the user's comfort, stability, and safety, making it one of the core components of wheelchair design. With the diversification of user needs for wheelchairs, the existing wheelchair backrest structures have gradually revealed the following technical shortcomings:

[0003] Insufficient adaptability and support: Most existing wheelchair backrests are one-piece fixed structures, which cannot be adjusted left and right according to the user's body shape (such as shoulder width and back width). For users with narrow shoulders, the lack of effective lateral support on both sides of the back makes it easy for the body to shift; for users with wide shoulders, the fixed backrest will compress the shoulders, which can easily lead to back muscle soreness after long-term use, resulting in poor comfort and stability.

[0004] In view of the shortcomings of the existing technologies, there is an urgent need to design a wheelchair backrest structure that combines adjustability, functional integration and safety, in order to solve problems such as poor adaptability, inconvenient battery storage and safety hazards at night. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the prior art and provide a backrest structure and wheelchair. By optimizing the backrest adjustment mechanism and functional integration design, the problem of poor adaptability of the existing backrest is solved.

[0006] To achieve the above and other related objectives, the technical solution provided by this utility model is: a backrest structure, comprising: a first armrest, a second armrest, a crossbar, a mounting plate, a middle backrest panel, a left backrest panel, and a right backrest panel; the first armrest and the second armrest are vertically spaced apart, and the crossbar and the mounting plate are both horizontally arranged and fixedly connected between the first armrest and the second armrest; the middle backrest panel is vertically arranged and fixedly connected to the crossbar, the left backrest panel is vertically arranged on the left side of the middle backrest panel and is adjustable left and right and simultaneously connected to the mounting plate and the middle backrest panel, and the right backrest panel is vertically arranged on the right side of the middle backrest panel and is adjustable left and right and simultaneously connected to the mounting plate and the middle backrest panel.

[0007] The preferred technical solution is as follows: the left backrest panel and the right backrest panel have the same structure, both including a mounting part, a wing part arranged at an angle to the mounting part, and a connecting part connecting the mounting part and the wing part. The back side of the mounting part is provided with a stud, and the back side of the connecting part is provided with a connecting block. The connecting block has a mounting inclined surface that matches the connecting part and a mounting plane that matches the mounting plate. The connecting part and the mounting inclined surface are fixedly installed by screws, and the mounting plane is provided with screw holes.

[0008] The preferred technical solution is as follows: the middle backrest plate is provided with a horizontally arranged strip-shaped adjustment hole, and the stud is inserted into the strip-shaped adjustment hole and assembled and fixed with a nut.

[0009] The preferred technical solution is as follows: the mounting plate is provided with a horizontally arranged strip-shaped adjustment hole two, and also includes a bolt one, which is inserted into the strip-shaped adjustment hole two and assembled and fixed with the bolt hole.

[0010] The preferred technical solution is as follows: the crossbar is fixedly installed to both the first handrail and the second handrail by a clamp, and the mounting plate is fixedly installed to both the first handrail and the second handrail by a clamp.

[0011] The preferred technical solution is that the middle backrest plate and the crossbar are fixedly connected by two bolts and two nuts.

[0012] A preferred technical solution is as follows: it further includes a battery housing, which is attached to the rear side of the middle backrest panel. The top of the battery housing is fixedly connected to the mounting plate by screws, and the bottom of the battery housing is fixedly connected to the middle backrest panel by screws.

[0013] A preferred technical solution is as follows: it further includes a taillight, which is fixed to the rear side of the mounting plate, and a battery is provided in the battery case, which is used to power the taillight.

[0014] The preferred technical solution is that the first handrail and the second handrail have the same structure, and both are hinged at the top with handles that can be folded and stored.

[0015] A wheelchair, including the aforementioned backrest structure.

[0016] Due to the application of the above technical solution, the beneficial effects of this utility model are as follows:

[0017] This utility model provides a backrest structure and wheelchair that significantly improves backrest adaptability and comfort: through the "dual adjustment structure" of the left and right backrest panels, the distance between the two backrest panels can be flexibly adjusted according to the user's shoulder width and back width, providing reliable side support for users with narrow shoulders and freeing up shoulder space for users with wide shoulders, adapting to users of different body types, and greatly improving the comfort and body stability of long-term sitting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the backrest structure of Embodiment 1 of this utility model from one perspective.

[0019] Figure 2 This is a schematic diagram of the backrest structure of Embodiment 1 of this utility model from another perspective.

[0020] Figure 3 This is a schematic diagram of the backrest structure in Embodiment 2 of this utility model.

[0021] Figure 4 This is a schematic diagram of the backrest structure in Embodiment 3 of this utility model. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0023] Please see Figures 1-4 It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example:

[0026] like Figures 1 to 2 As shown, according to an overall technical concept of this utility model, a backrest structure is provided, including: armrest 1, armrest 2, crossbar 3, mounting plate 4, middle backrest panel 5, left backrest panel 6, and right backrest panel 7; armrest 1 and armrest 2 are vertically spaced apart, and crossbar 3 and mounting plate 4 are both horizontally arranged and fixedly connected between armrest 1 and armrest 2; the middle backrest panel 5 is vertically arranged and fixedly connected to crossbar 3, the left backrest panel 6 is vertically arranged on the left side of the middle backrest panel 5 and is adjustable left and right and simultaneously connected to mounting plate 4 and middle backrest panel 5, and the right backrest panel 7 is vertically arranged on the right side of the middle backrest panel 5 and is adjustable left and right and simultaneously connected to mounting plate 4 and middle backrest panel 5.

[0027] like Figures 1 to 2 As shown, in an exemplary embodiment of this utility model, the left backrest panel 6 and the right backrest panel 7 have the same structure, both including a mounting part 100, a wing part 200 arranged at an angle to the mounting part 100, and a connecting part 300 connecting the mounting part 100 and the wing part 200. The back side of the mounting part 100 is provided with a stud, and the back side of the connecting part 300 is provided with a connecting block 8. The connecting block 8 has a mounting inclined surface that matches the connecting part 300 and a mounting plane that matches the mounting plate 4. The connecting part 300 and the mounting inclined surface are fixedly installed by screws, and the mounting plane is provided with screw holes.

[0028] like Figures 1 to 2 As shown, in an exemplary embodiment of this utility model, the middle backrest plate 5 is provided with a horizontally arranged strip-shaped adjustment hole 51, and a stud is inserted into the strip-shaped adjustment hole 51 and assembled and fixed with a nut.

[0029] like Figures 1 to 2 As shown, in an exemplary embodiment of this utility model, the mounting plate 4 is provided with a horizontally arranged strip-shaped adjustment hole 41, and also includes a bolt, which is inserted into the strip-shaped adjustment hole 41 and assembled and fixed with the screw hole.

[0030] like Figures 1 to 2As shown, in an exemplary embodiment of this utility model, the crossbar 3 is fixedly installed with both the handrail 1 and the handrail 2 by a clamp, and the mounting plate 4 is fixedly installed with both the handrail 1 and the handrail 2 by a clamp.

[0031] like Figures 1 to 2 As shown, in an exemplary embodiment of this utility model, the middle backrest plate 5 and the crossbar 3 are fixedly connected by two bolts and two nuts.

[0032] like Figures 1 to 2 As shown, in an exemplary embodiment of this utility model, a battery housing 9 is also included. The battery housing 9 is attached to the rear side of the middle backrest plate 5. The top of the battery housing 9 is fixedly connected to the mounting plate 4 by screws, and the bottom of the battery housing 9 is fixedly connected to the middle backrest plate 5 by screws.

[0033] like Figures 1 to 2 As shown, in an exemplary embodiment of this utility model, a taillight 10 is also included. The taillight 10 is fixed to the rear side of the mounting plate 4, and a battery is provided in the battery case 9. The battery is used to power the taillight 10.

[0034] like Figures 1 to 2 As shown, in an exemplary embodiment of this utility model, handrail 1 and handrail 2 have the same structure, and both are hinged at the top with handles that can be folded and stored.

[0035] In addition, such as Figures 3-4 As shown, in two other embodiments of this utility model, users can choose left and right back panels with longer wing extensions as needed to meet different wrapping requirements. They can also assemble detachable auxiliary wing panels 11 on the wings to achieve a deep wrapping structure.

[0036] A wheelchair, including the aforementioned backrest structure.

[0037] Therefore, this utility model has the following advantages:

[0038] This utility model provides a backrest structure and wheelchair that significantly improves backrest adaptability and comfort: through the "dual adjustment structure" of the left and right backrest panels, the distance between the two backrest panels can be flexibly adjusted according to the user's shoulder width and back width, providing reliable side support for users with narrow shoulders and freeing up shoulder space for users with wide shoulders, adapting to users of different body types, and greatly improving the comfort and body stability of long-term sitting.

[0039] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A backrest structure, characterized in that, include: The package includes a first handrail, a second handrail, a crossbar, a mounting plate, a middle backrest, a left backrest, and a right backrest. The first and second handrails are vertically spaced apart. The crossbar and the mounting plate are horizontally positioned and fixedly connected between the first and second handrails. The middle backrest is vertically positioned and fixedly connected to the crossbar. The left backrest is vertically positioned to the left of the middle backrest and is adjustable left and right, simultaneously connected to both the mounting plate and the middle backrest. The right backrest is vertically positioned to the right of the middle backrest and is adjustable left and right, simultaneously connected to both the mounting plate and the middle backrest. The left backrest panel and the right backrest panel have the same structure, both including a mounting part, a wing part set at an angle to the mounting part, and a connecting part connecting the mounting part and the wing part. The back side of the mounting part is provided with a stud, and the back side of the connecting part is provided with a connecting block. The connecting block has a mounting inclined surface that matches the connecting part and a mounting plane that matches the mounting plate. The connecting part and the mounting inclined surface are fixedly installed by screws, and the mounting plane is provided with screw holes. The middle backrest plate is provided with a horizontally arranged strip-shaped adjustment hole 1, and the stud is inserted into the strip-shaped adjustment hole 1 and assembled and fixed with a nut 1; The mounting plate is provided with a horizontally arranged strip-shaped adjustment hole two, and also includes a bolt one, which is inserted into the strip-shaped adjustment hole two and assembled and fixed with the bolt hole.

2. The backrest structure according to claim 1, characterized in that: The crossbar is fixedly installed to both the first and second handrails via a clamp, and the mounting plate is fixedly installed to both the first and second handrails via a clamp.

3. The backrest structure according to claim 1, characterized in that: The middle backrest plate and the crossbar are fixedly connected by two bolts and two nuts.

4. A backrest structure according to claim 1, characterized in that: It also includes a battery case, which is attached to the rear side of the middle backrest panel. The top of the battery case is fixedly connected to the mounting plate by screws, and the bottom of the battery case is fixedly connected to the middle backrest panel by screws.

5. A backrest structure according to claim 4, characterized in that: It also includes a taillight, which is fixed to the rear side of the mounting plate, and a battery is provided in the battery case, which is used to power the taillight.

6. A backrest structure according to claim 1, characterized in that: The first and second handrails have the same structure, and both are hinged at the top with handles that can be folded and stored.

7. A wheelchair, characterized in that, Includes the backrest structure as described in any one of claims 1-6.

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