Carbon fiber integrated forming electric wheelchair frame

Abstract

The utility model provides a carbon fiber integrated forming electric wheelchair frame, including frame body, the frame body includes the backrest frame, seat frame, handrail frame, foot support and side support of mirror image setting, is equipped with the balance beam between two seat frames, and seat frame, handrail frame and foot support upper end are equipped with installation surface one, installation surface two and installation surface three respectively. The utility model has the advantages that carbon fiber integrated forming is adopted, the frame is effectively lightened, the strength is high, fatigue resistance is good, the endurance and the life are improved, load is dispersed through the structural design of the intersection of V-shaped balance beam and multiple component connecting points, the overall stability of the frame is ensured, the standardization mounting hole improves the assembly convenience and the universality, the ergonomics and the anti-rollover design enhance the riding comfort and the driving safety.

Description

Technical Field

[0001] This utility model mainly relates to the field of electric wheelchair technology, specifically to a carbon fiber integrated molded electric wheelchair frame. Background Technology

[0002] Existing electric wheelchair frames mostly use welded steel pipes or assembled aluminum alloy structures, which have the disadvantage of being heavy. This not only limits the wheelchair's range, but also makes the welded joints prone to fatigue and breakage, affecting the safety of use.

[0003] Some improved designs use carbon fiber to make the frame, but most of them are split structures, spliced ​​together by bolts or adhesives. Although this structure reduces some weight, it has problems such as insufficient connection strength and easy loosening after long-term use. In addition, the assembly process is cumbersome and the production efficiency is low, making it difficult to meet the market demand for lightweight, high-strength and easy-to-assemble electric wheelchair frames.

[0004] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0005] 1. The technical problem to be solved by the utility model: This utility model provides a one-piece carbon fiber molded electric wheelchair frame to solve the technical problems existing in the background art.

[0006] 2. Technical Solution: To achieve the above objectives, the technical solution provided by this utility model is as follows: a carbon fiber integrated molded electric wheelchair frame, including a frame body, the frame body including a backrest frame, a seat frame, an armrest frame, a footrest and a side support arranged in a mirror arrangement, a balance beam is provided between the two seat frames, and the upper ends of the seat frame, the armrest frame and the footrest are respectively provided with mounting surface one, mounting surface two and mounting surface three.

[0007] Furthermore, the balance beam is V-shaped, and the upper surface of the balance beam is flush with the mounting surface.

[0008] Furthermore, the connection point between the handrail and the seat frame, and the connection point between the balance beam (6) and the seat frame intersect.

[0009] Furthermore, a mounting hole is provided on the rod connecting the foot bracket to the seat frame.

[0010] Furthermore, the side support is semi-circular, and a second mounting hole is provided at the lower end of the side support.

[0011] Furthermore, mounting holes 3 are provided on mounting surface 1, mounting surface 2, and mounting surface 3.

[0012] Furthermore, the diameters of the backrest frame, the armrest frame, the footrest, the side support, and the balance beam are all smaller than the diameter of the seat frame.

[0013] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following advantages: The frame is made of carbon fiber in one piece, which effectively reduces weight, has high strength and fatigue resistance, and improves range and lifespan. The structural design of V-shaped balance beam and multiple component connection points disperses the load and ensures the overall stability of the frame. Standardized mounting holes improve assembly convenience and versatility. Ergonomic and anti-rollover design enhances riding comfort and driving safety.

[0014] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle.

[0016] Figure label: 1. Backrest frame; 2. Seat frame; 3. Armrest frame; 4. Footrest; 5. Side support; 6. Balance beam; 7. Mounting surface one; 8. Mounting surface two; 9. Mounting surface three; 10. Mounting hole one; 11. Mounting hole two; 12. Mounting hole three. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" 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 according to the specific circumstances.

[0021] See attached document Figure 1-2 A carbon fiber integrated molded electric wheelchair frame includes a frame body, which includes a backrest frame 1, a seat frame 2, an armrest frame 3, a footrest 4, and a side support 5 arranged in a mirror arrangement. A balance beam 6 is provided between the two seat frames 2. The upper ends of the seat frame 2, armrest frame 3, and footrest 4 are respectively provided with mounting surface 1 7, mounting surface 2 8, and mounting surface 3 9. The frame body is made of carbon fiber material and is manufactured using an integrated molding process.

[0022] The two backrest frames 1 are symmetrical curved rod-shaped structures that provide installation support for the wheelchair backrest. Their lower ends are integrally connected to the seat frame 2 to form a stable back support node, which can effectively distribute the user's back load. The rod curves are adapted to the physiological curvature of the human back, improving riding comfort. The integral connection method ensures that the back load can be continuously transferred to the seat frame, avoiding local stress concentration.

[0023] Two seat frames 2 are distributed in parallel mirror image. The diameter of the rod is larger than that of other components to provide sufficient load-bearing strength for mounting wheelchair cushions. The upper end of the seat frame 2 is provided with a mounting surface 7, which is a planar structure with mounting holes 12 evenly distributed on it. These holes are used to cooperate with the bottom connector of the cushion to achieve quick and stable installation of the cushion. At the same time, the mounting hole positions can be flexibly adjusted according to the cushion specifications to improve the versatility of accessories.

[0024] The handrail frame 3 is diagonally connected to the upper part of the seat frame 2, corresponding to the natural placement position of the human arm. The upper end of the handrail frame 3 is provided with a mounting surface 8, and the mounting holes 12 on the mounting surface 8 are used to fix the handrail assembly, ensuring that the handrail remains stable when the user applies force. The connection point between the handrail frame 3 and the seat frame 2 and the connection point between the balance beam 6 and the seat frame 2 intersect, forming a three-dimensional stress dispersion node, which greatly enhances the structural strength of this area and avoids frame deformation due to the force of the handrail.

[0025] The footrest 4 is connected to the front end of the seat frame 2 and is a forward-extending rod-like structure used to install the foot pedal. The footrest 4 has a mounting hole 10, which is a set of equal diameter through holes. The installation position of the foot pedal can be adjusted according to the user's leg length to meet ergonomic requirements. The upper end is provided with a mounting surface 9, which, together with the mounting hole 12, enables the precise positioning and firm fixation of the foot pedal, ensuring the stability of the user's feet when placed.

[0026] The side support 5 has a semi-circular curved structure and is connected to the lower side of the seat frame 2. The lower end has a mounting hole 11 for mounting the drive wheel or auxiliary wheel assembly of the electric wheelchair. The semi-circular structure provides ample installation space for the wheels, while the arc-shaped rod can evenly distribute the lateral load, effectively preventing the frame from tipping over and improving the driving stability of the electric wheelchair.

[0027] The balance beam 6 has a V-shaped structure and is integrally formed and connected between the two seat frames 2. Its end intersects with the connection node of the seat frame 2 and the connection node of the armrest frame 3. The upper surface of the balance beam 6 is flush with the mounting surface 7. This not only enhances the lateral connection strength of the two seat frames 2, but also helps to distribute the vertical load in the seat area, preventing the seat frame 2 from bending and deforming due to bearing the weight of the human body. The V-shaped configuration optimizes the space layout at the bottom of the frame while ensuring structural strength, making it easier to install electric components such as battery compartment and controller.

[0028] The diameters of the backrest frame 1, armrest frame 3, footrest 4, side support 5, and balance beam 6 are all smaller than the diameter of the seat frame 2. The seat frame 2, as the main load-bearing component, requires a larger cross-sectional modulus. The remaining components, while meeting their own functional strength requirements, further reduce the overall weight by reducing their diameter, thus achieving the goal of lightweight design.

[0029] In summary, all components are integrally formed by carbon fiber molding to create a seamless whole, ensuring continuous and uniform stress transmission, which significantly improves fatigue resistance and service life. The layout of each mounting hole is compatible with standardized parts, ensuring that components such as seats, armrests, footrests, and wheels can be quickly assembled, which not only improves production efficiency but also facilitates later maintenance.

[0030] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A one-piece carbon fiber molded electric wheelchair frame, comprising a frame body, characterized in that: The frame body includes a backrest frame (1), a seat frame (2), an armrest frame (3), a footrest (4) and a side support (5) arranged in a mirror image. A balance beam (6) is provided between the two seat frames (2). The upper ends of the seat frame (2), the armrest frame (3) and the footrest (4) are respectively provided with mounting surface one (7), mounting surface two (8) and mounting surface three (9).

2. The carbon fiber integrated molded electric wheelchair frame according to claim 1, characterized in that: The balance beam (6) is V-shaped, and the upper end face of the balance beam (6) is flush with the mounting surface (7).

3. The carbon fiber integrated molded electric wheelchair frame according to claim 1, characterized in that: The connection point between the handrail (3) and the seat frame (2) and the connection point between the balance beam (6) and the seat frame (2) intersect.

4. The carbon fiber integrated molded electric wheelchair frame according to claim 1, characterized in that: The foot bracket (4) is connected to the seat frame (2) by a mounting hole (10).

5. The carbon fiber integrated molded electric wheelchair frame according to claim 1, characterized in that: The side support (5) is semi-circular, and the lower end of the side support (5) is provided with a second mounting hole (11).

6. The carbon fiber integrated molded electric wheelchair frame according to claim 1, characterized in that: Mounting holes 3 (12) are provided on mounting surface 1 (7), mounting surface 2 (8) and mounting surface 3 (9).

7. The carbon fiber integrated molded electric wheelchair frame according to claim 1, characterized in that: The diameters of the backrest frame (1), the armrest frame (3), the footrest (4), the side support (5), and the balance beam (6) are all smaller than the diameter of the seat frame (2).

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