Wheelchair backrest

Abstract

The utility model provides a wheelchair backrest. The wheelchair backrest comprises a main body frame, fixing strips and screen cloth, a backrest area is defined by the main body frame, a mounting groove is formed in the backrest area, a groove opening of the mounting groove faces the outer side of the backrest area, the fixing strip is connected with the outer edge of the screen cloth and is turned over so that the screen cloth can be wound on the fixing strip, the fixing strip is installed in the mounting groove to fix the screen cloth, and the fixing strip is connected with the outer edge of the screen cloth. And the mesh cloth covers the backrest area along the winding direction. The screen cloth of the wheelchair backrest is simple to assemble and firm to fix.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchairs, in particular to a wheelchair backrest. Background Art

[0002] Wheelchairs are an important tool for rehabilitation. They are not only a means of transportation for people with physical disabilities and limited mobility, but more importantly, they can use wheelchairs to exercise and participate in social activities. The wheelchair frame usually consists of a backrest, armrests, a base cushion and footrests.

[0003] The fabric on the backrest is usually mesh. When installing the mesh, it is usually necessary to connect the outer edge of the mesh with a fixing strip, then install the fixing strip on the mounting groove of the frame, and finally use a pressure plate to press on the mounting groove to prevent the mesh from falling off. The installation process is complicated. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, the purpose of the present invention is to provide a wheelchair backrest that is easy to assemble and has a secure mesh.

[0005] To achieve the above-mentioned purpose, the utility model proposes a wheelchair backrest, which includes: a main frame, a fixing strip and a mesh;

[0006] The main frame defines a backrest area, and the backrest area is provided with a mounting groove, the notch of the mounting groove is arranged toward the outside of the backrest area, the fixing strip is connected to the outer edge of the mesh and folded so that the mesh is wound on the fixing strip, and the fixing strip is installed in the mounting groove to fix the mesh, and the mesh covers the backrest area along the winding direction.

[0007] According to an embodiment of the present invention, a wheelchair backrest is provided with a mounting groove on the backrest area of ​​the main frame. The notch of the mounting groove is arranged toward the outside of the backrest area, so that the fixing strip can be used to install the mesh cloth connected to and wound around the fixing strip into the mounting groove together. As a result, the mesh cloth is fixed and covers the backrest area. The mesh cloth covers the backrest area along the winding direction, so that when the backrest area supports the human back, the mesh cloth can drive the fixing strip to press against the inner wall of the mounting groove. The mesh cloth can be securely installed in the mounting groove without the need for an additional pressure plate. The mesh cloth of the wheelchair backrest is easy to assemble and securely fixed.

[0008] In addition, the wheelchair backrest according to the above embodiment of the present invention may also have the following additional technical features:

[0009] Optionally, the main frame defines a hollow area, and the hollow area is located above the backrest area.

[0010] Furthermore, the main frame has a first frame and a second frame, the first frame and the second frame are both provided with the mounting groove, and the second frame is horizontally connected to the first frame to separate the first frame into the hollow area and the backrest area.

[0011] Furthermore, the first frame defines a protrusion, the installation slot of the second frame runs through the length direction of the second frame, and the protrusion connects two ends of the installation slot.

[0012] Furthermore, the protruding portion has a first mounting hole, and both ends of the second frame are provided with second mounting holes that penetrate the mounting groove, and the second mounting holes are connected to the first mounting holes.

[0013] Furthermore, the first frame extends a first connecting portion from the side to connect to the armrest of the wheelchair, and the first frame extends a second connecting portion, a third connecting portion and a fourth connecting portion from the bottom, the second connecting portion and the third connecting portion are suitable for connecting to the seat plate of the wheelchair, and the fourth connecting portion is suitable for connecting to the frame of the wheelchair.

[0014] Furthermore, the cross section of the mounting groove is U-shaped, and the cross section of the fixing bar is square.

[0015] Optionally, the mesh is PVC mesh.

[0016] Furthermore, the mesh holes of the PVC mesh cloth are in an inclined hourglass shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a wheelchair backrest according to an embodiment of the present invention;

[0018] Figure 2 It is a structural diagram of the main frame according to an embodiment of the utility model;

[0019] Figure 3 Schematic diagram of the structure of the first frame according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of the mesh, mounting groove and fixing strip according to an embodiment of the present utility model;

[0021] Figure 5 Schematic diagram of the structure of the second frame according to an embodiment of the present utility model;

[0022] Description of reference numerals:

[0023] Main frame 1, backrest area 11, mounting groove 111, hollow area 12, first frame 13, protrusion 131, first mounting hole 132, second frame 14, second mounting hole 141, first connecting part 15, second connecting part 16, third connecting part 17, fourth connecting part 18, fixing strip 2, mesh 3. DETAILED DESCRIPTION

[0024] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] To better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0026] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] Reference below Figure 1-5 , the implementation of the wheelchair backrest proposed in accordance with the embodiment of the present utility model is described in detail.

[0028] The wheelchair backrest according to the embodiment of the present invention comprises: a main frame 1 , a fixing strip 2 and a mesh 3 .

[0029] Specifically, the main frame 1 defines a backrest area 11, and the backrest area 11 is provided with a mounting groove 111. The notch of the mounting groove 111 is set toward the outside of the backrest area 11. The fixing strip 2 is connected to the outer edge of the mesh 3 and folded so that the mesh 3 is wound on the fixing strip 2. The fixing strip 2 is installed in the mounting groove 111 to fix the mesh 3, and the mesh 3 covers the backrest area 11 along the winding direction.

[0030] That is to say, the outer edge of the mesh 3 is connected to the fixing strip 2 and wound on the fixing strip 2, and the fixing strip 2 and the mesh 3 wound on the fixing strip 2 are installed in the installation groove 111 together, so that the entire mesh 3 covers the backrest area 11. Since the notch of the installation groove 111 is set toward the outside of the backrest area 11, and the mesh 3 extends out of the installation groove 111 along the winding direction and covers the backrest area 11, when the mesh 3 supports the back of the human body, the mesh 3 outside the installation groove 111 will cause the fixing strip 2 to squeeze the mesh 3 in the installation groove 111 against the inner wall of the installation groove 111, that is, the mesh 3 is squeezed between the internal fixing strip 2 and the external installation groove 111. At the same time, when the mesh 3 is pressed by the user's back, the protruding side of the mesh 3 will exert lateral force on the wound part to squeeze the mesh 3 in the installation groove 111 against the inner wall of the installation groove 111, thereby ensuring the reliability of the installation of the mesh 3.

[0031] Thus, the backrest area 11 of the main frame 1 is provided with a mounting groove 111, with the notch of the mounting groove 111 facing the outside of the backrest area 11, so that the fixing strip 2 can easily install the mesh 3 connected to and wound on the fixing strip 2 in the mounting groove 111, so that the mesh 3 is fixed and covered on the backrest area 11, and the mesh 3 covers the backrest area 11 along the winding direction, so that when the backrest area 11 supports the back of the human body, the mesh 3 can drive the fixing strip 2 to press against the inner wall of the mounting groove 111, making it difficult for the mesh 3 and the fixing strip 2 to fall out of the mounting groove 111. The mesh 3 of the wheelchair backrest is easy to assemble and firmly fixed.

[0032] The main frame 1 defines a hollow area 12, which is located above the backrest area 11. As can be understood, the hollow area 12 facilitates hand gripping and pushing the wheelchair without the need for additional handles, making the entire wheelchair more concise and beautiful.

[0033] Regarding the main frame 1, the main frame has a first frame 13 and a second frame 14. The first frame 13 and the second frame 14 are both provided with mounting grooves 111. The second frame 14 connects the first frame 13 in the horizontal direction to separate the first frame 13 into a hollow area 12 and a backrest area 11. It can be understood that by setting the first frame 13 and the second frame 14, it is convenient to separate the area surrounded by the first frame 13 into the backrest area 11 and the hollow area 12, thereby facilitating the installation of the mesh 3 and the hand grip. Among them, the backrest area 11 can be a closed square shape, the hollow area 12 can be a closed leaf shape, the cross section of the first frame 13 can be a circular tube shape, and the cross section of the second frame 14 can be U-shaped.

[0034] To connect the first frame 13 and the second frame 14, the first frame 13 defines a protrusion 131. The mounting slot 111 of the second frame 14 extends along its length, with the protrusion 131 connecting the two ends of the mounting slot 111. As can be appreciated, the protrusion 131 extending into the two ends of the mounting slot 111 provides a smoother connection and a more aesthetically pleasing overall appearance. Furthermore, the mounting slot 111 can also accommodate the fixing bar 2, achieving dual purposes and facilitating cost control. The mounting slots 111 of the first frame 13 and the second frame 14 can be integrally formed.

[0035] To connect the first frame 13 and the second frame 14, the protrusion 131 has a first mounting hole 132. Second mounting holes 141 are provided at both ends of the second frame 14, radially communicating with the mounting slot 111. The second mounting holes 141 connect to the first mounting holes 132. It can be understood that the provision of the first mounting holes 132 and the second mounting holes 141 facilitates insertion of the protrusion 131 of the first frame 13 into the mounting slot 111 of the second frame 14. The first mounting holes 132 and the second mounting holes 141 then connect radially, thereby improving the reliability of the connection between the second frame 14 and the first frame 13. The first mounting holes 132 and the second mounting holes 141 can be connected by a bolt and nut, and the second mounting holes 141 can be countersunk holes to ensure smoothness after the bolts and nuts are installed.

[0036] Regarding the main frame 1, a first connecting portion 15 extends from the side of the first frame 13 for connecting to the wheelchair's armrests. A second connecting portion 16, a third connecting portion 17, and a fourth connecting portion 18 extend from the bottom of the first frame 13. The second connecting portion 16 and the third connecting portion 17 are suitable for connecting to the wheelchair's seat, and the fourth connecting portion 18 is suitable for connecting to the wheelchair's frame. It can be understood that the first connecting portion 15 facilitates the installation of the wheelchair's armrests, the second connecting portion 16 and the third connecting portion 17 facilitate the connection of the main frame 1 to the wheelchair's seat, and the fourth connecting portion 18 facilitates the connection of the main frame 1 to the wheelchair's frame. Among them, the first connecting part 15 is located in the middle position of the side of the backrest area 11. The first connecting part 15 can be an integrally formed shaft-like protrusion. The position where the first connecting part 15 is formed can be without setting the installation groove 111, that is, the side of the backrest area 11 can be provided with two sections of installation grooves 111, and the first connecting part 15 is provided between the two installation grooves 111; the second connecting part 16 is located at the side end of the lower extension section of the main frame 1, and the third connecting part 17 is located below the second connecting part 16 and faces the front of the backrest area 11; the fourth connecting part 18 is located below the third connecting part 17 and faces the bottom of the backrest area 11.

[0037] Regarding the mounting groove 111 and the fixing strip 2, the mounting groove 111 has a U-shaped cross-section, while the fixing strip 2 has a square cross-section. As can be understood, the U-shape of the mounting groove 111 and the square shape of the fixing strip 2 facilitate quick installation of the fixing strip 2 within the U-shaped mounting groove 111, thereby securing the outer edge of the mesh 3 to the mounting groove 111. Furthermore, the outer edge of the mesh 3 can be folded twice after being connected to the fixing strip 2, forming a U-shape and wrapping around the fixing strip 2.

[0038] As for the mesh, the mesh is PVC mesh. As you can understand, PVC mesh has the advantages of acid resistance, alkali resistance, wear resistance, high temperature resistance, long service life, smooth mesh surface, high tensile strength, good air permeability, etc. At the same time, it is easy to clean and makes the entire backrest more beautiful and simple after installation.

[0039] The mesh of the PVC mesh 3 is in an inclined hourglass shape. It is understood that the inclined hourglass-shaped mesh facilitates ventilation. The inclined hourglass-shaped mesh can be formed by a plurality of vertical bars and a plurality of curved horizontal bars intersecting each other, so that the PVC mesh 3 has a certain degree of elasticity in the transverse direction, thereby improving user comfort.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0042] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0043] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0045] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A wheelchair backrest, characterized in that: include: Main frame, fixing bars and mesh; The main frame defines a backrest area, and the backrest area is provided with a mounting groove, the notch of the mounting groove is arranged toward the outside of the backrest area, the fixing strip is connected to the outer edge of the mesh and folded so that the mesh is wound on the fixing strip, and the fixing strip is installed in the mounting groove to fix the mesh, and the mesh covers the backrest area along the winding direction.

2. The wheelchair backrest according to claim 1, wherein: The main frame defines a hollow area, and the hollow area is located above the backrest area.

3. The wheelchair backrest according to claim 2, wherein: The main frame includes a first frame and a second frame. Both the first frame and the second frame are provided with the mounting groove. The second frame is connected to the first frame in a horizontal direction to separate the first frame into the hollow area and the backrest area.

4. The wheelchair backrest according to claim 3, wherein: The first frame defines a protrusion, the installation slot of the second frame runs through the length direction of the second frame, and the protrusion connects two ends of the installation slot.

5. The wheelchair backrest according to claim 4, wherein: The protruding portion has a first mounting hole, and both ends of the second frame are provided with second mounting holes radially communicating with the mounting groove, and the second mounting holes are connected to the first mounting holes.

6. The wheelchair backrest according to claim 3, wherein: The first frame extends a first connection portion from the side to connect to the armrest of the wheelchair, and the first frame extends a second connection portion, a third connection portion and a fourth connection portion from the bottom, the second connection portion and the third connection portion are suitable for connecting to the seat plate of the wheelchair, and the fourth connection portion is suitable for connecting to the frame of the wheelchair.

7. The wheelchair backrest according to claim 1, wherein: The cross section of the mounting groove is U-shaped, and the cross section of the fixing bar is square.

8. The wheelchair backrest according to claim 1, wherein: The mesh is PVC mesh.

9. The wheelchair backrest according to claim 8, wherein: The meshes of the PVC mesh cloth are in an inclined hourglass shape.

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