Backrest screen cloth mounting structure

Abstract

The utility model provides a backrest screen cloth mounting structure. The backrest screen cloth mounting structure comprises a fixed frame, screen cloth and a main body frame, a first hollow area is surrounded by the fixing frame, and a positioning column is arranged on the rear side of the fixing frame; the outer edge of the screen cloth is connected with the rear side of the fixing frame, so that the screen cloth can cover the first hollow area; a second hollow area is surrounded by the main body frame, an inner concave section communicated with the second hollow area is arranged on the main body frame in the surrounding direction of the main body frame, the side wall and the bottom wall of the inner concave section jointly form a mounting groove with a mounting opening facing the front side, and a positioning hole penetrating through the rear side of the main body frame is formed in the bottom wall of the inner concave section; the positioning columns can be inserted into the positioning holes and connected with the main body frame through screws so that the fixing frame can be installed on the main body frame. The backrest screen cloth mounting structure is convenient to disassemble and assemble, and the screen cloth is firmly fixed.

Description

TECHNICAL FIELD

[0001] The utility model relates to wheelchair technical field, specifically relates to a backrest net cloth mounting structure. BACKGROUND

[0002] Wheelchair is an important tool for rehabilitation, it is not only the walking aid of the limb disabled and the person who cannot move, more importantly, it enables them to exercise the body and participate in social activities by means of wheelchair. Wheelchair frame of wheelchair is usually composed of backrest, handrail, bottom pad and footboard.

[0003] The fabric on the backrest usually adopts net cloth, which is usually wrapped on the fixed bar during installation, and then the fixed bar together with the net cloth is installed in the mounting slot of the frame. This installation method is relatively complex, and after being used for a period of time, the net cloth is prone to looseness at the matching part of the mounting slot, and subsequent replacement is difficult. Therefore, a net cloth mounting structure that is simple to disassemble and assemble and facilitates subsequent maintenance needs to be developed. UTILITY MODEL CONTENTS

[0004] The utility model aims at at least one of the technical problems in the above-mentioned technology to some extent. Therefore, the purpose of the utility model is to provide a backrest net cloth mounting structure, which is convenient to disassemble and assemble and firmly fixes the net cloth.

[0005] To achieve the above-mentioned purpose, the utility model provides a backrest net cloth mounting structure, which comprises a fixed frame, a net cloth and a main body frame.

[0006] The fixed frame surrounds a first hollow area, and the rear side of the fixed frame is provided with a positioning column.

[0007] The outer edge of the net cloth is connected to the rear side of the fixed frame, so that the net cloth can cover the first hollow area.

[0008] The main body frame surrounds a second hollow area, and the main body frame is provided with an inner recess along its surrounding direction, which communicates with the second hollow area. The side wall and bottom wall of the inner recess jointly form an installation slot with the installation port facing the front side. The bottom wall of the inner recess is provided with a positioning hole penetrating through the rear side of the main body frame. The positioning column can be inserted into the positioning hole and connected to the main body frame through a screw, so that the fixed frame is installed on the main body frame.

[0009] According to the back net cloth mounting structure of the utility model, the step type mounting groove is formed through the inner recess section of the main body frame, the positioning hole is arranged on the recess section, the net cloth is mounted on the fixed frame, the positioning column is arranged on the fixed frame, during mounting, only need to align the positioning column of the fixed frame with the net cloth mounted to the positioning hole of the main body frame, make the whole fixed frame place in the mounting groove, then can realize the connection of the fixed frame and the main body frame through screw fixing.

[0010] In addition, the back net cloth mounting structure according to the above embodiment of the utility model can also have the following additional technical features:

[0011] Optionally, the cross section of the inner recess section is L-shaped.

[0012] Optionally, the inner recess section is arranged at the bottom and the two side portions of the main body frame, so that the top portion of the fixed frame is in a free state.

[0013] Further, it also includes a crossbeam, which connects the top portion of the fixed frame to jointly clamp the outer edge of the net cloth.

[0014] Optionally, the positioning column is provided with a connecting hole, and the positioning hole is a counterbore.

[0015] Optionally, the net cloth is a PVC net cloth.

[0016] Optionally, the fixed frame is a plastic frame. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an exploded view of the back net cloth mounting structure according to the embodiment of the utility model;

[0018] Figure 2 It is a structural schematic view of the back net cloth mounting structure according to the embodiment of the utility model;

[0019] Figure 3 It is Figure 2 It is a structural schematic view from another perspective;

[0020] Figure 4 It is a structural schematic view of the main body frame according to the embodiment of the utility model;

[0021] Figure 5 It is a structural schematic view of the fixed frame, the net cloth and the crossbeam in an assembled state according to the embodiment of the utility model;

[0022] Figure 6 It is a structural schematic view of the fixed frame according to the embodiment of the utility model;

[0023] Figure 7This is a schematic diagram of the cooperative structure of the fixing frame, the mesh fabric, and the main frame according to an embodiment of the present utility model;

[0024] Explanation of reference numerals in the attached figures:

[0025] Fixed frame 1, first hollow area 11, positioning post 12, mesh fabric 2, main frame 3, second hollow area 31, concave section 32, positioning hole 33, crossbeam 4, screw 5. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0027] To better understand the above technical solutions, 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 drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth 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.

[0028] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0029] The following is for reference. Figures 1-7 The implementation of the backrest mesh installation structure proposed according to the embodiments of this utility model will be described in detail.

[0030] The backrest mesh installation structure according to an embodiment of the present utility model includes: a fixing frame 1, a mesh 2, and a main frame 3.

[0031] Specifically, the fixing frame 1 surrounds the first hollow area 11, and the rear side of the fixing frame 1 is provided with a positioning post 12; the outer edge of the mesh 2 is connected to the rear side of the fixing frame 1 so that the mesh 2 can cover the first hollow area 11; the main frame 3 surrounds the second hollow area 31, and the main frame 3 is provided with an inwardly recessed section 32 communicating with the second hollow area 31 along its surrounding direction. The side wall and bottom wall of the inwardly recessed section 32 together form an installation groove with the installation opening facing the front side. The bottom wall of the inwardly recessed section 32 is provided with a positioning hole 33 penetrating through the rear side of the main frame 3. The positioning post 12 can be inserted into the positioning hole 33 and connected to the main frame 3 by screws 5 so that the fixing frame 1 is installed on the main frame 3.

[0032] That is, when installing the mesh cloth 2, the mesh cloth 2 is first installed on the fixed frame 1, and the outer edge of the mesh cloth 2 can be fixed on the fixed frame 1 by folding and using a nail gun, so that the mesh cloth 2 covers the first hollow area 11 of the fixed frame 1; the inner recessed section 32 of the main frame 3 is arranged around the second hollow area 31 to form an installation groove with a bottom wall and a side wall, so that the fixed frame 1 can be embedded in the installation groove, and the fixed frame 1 is provided with a positioning column 12 at the rear side, and the bottom wall of the installation groove is provided with a positioning hole 33, and the positioning column 12 is aligned with the positioning hole 33 and inserted until the fixed frame 1 is completely embedded in the installation groove during the embedding process, and then the positioning column 12 is fastened with the main frame 3 from the rear side of the main frame 3 through the screw 5, so that the mesh cloth 2 is installed at the second hollow area 31 of the main frame 3, which is simple to assemble and also facilitates replacement in the later period; due to the cooperation of the positioning column 12 and the positioning hole 33, the mesh cloth 2 can be tightly pulled, and the mesh cloth 2 will not displace when the human back is in contact with the mesh cloth 2, and the fixed frame 1 and the main frame 3 can also clamp the mesh cloth 2 when the screw 5 is locked, so that the mesh cloth 2 is fixed more firmly. The main frame 3 can be made of carbon fiber material, and the inner recessed section 32 can be integrally formed with the main frame 3.

[0033] Therefore, the inner recessed section 32 of the main frame 3 is arranged to form a stepped installation groove, and the positioning hole 33 is arranged on the stepped groove, the mesh cloth 2 is installed on the fixed frame 1, the fixed frame 1 is provided with the positioning column 12, and during installation, the positioning column 12 of the fixed frame 1 on which the mesh cloth 2 is installed is aligned with the positioning hole 33 of the main frame 3, so that the whole fixed frame 1 is placed in the installation groove, and then the connection between the fixed frame 1 and the main frame 3 can be realized by fixing through the screw 5. The backrest mesh cloth mounting structure is convenient to disassemble and assemble, and the mesh cloth 2 is firmly fixed.

[0034] Alternatively, the cross section of the inner recessed section 32 is L-shaped. It can be understood that, by arranging the cross section of the inner recessed section 32 in an L shape, the structure of the inner recessed section 32 can be made more simple, thereby reducing the processing difficulty of the inner recessed section 32 and facilitating the installation of the fixed frame 1. The included angle between the side wall and the bottom wall of the inner recessed section 32 can be 90°, the cross section of the fixed frame 1 can be square, and the height of the side wall of the inner recessed section 32 can be matched with the thickness of the fixed frame 1 on which the mesh cloth 2 is installed, so that the integrity of the backrest structure is better, the cross section thickness h1 of the fixed frame 1 can be 7mm-8mm, and preferably 8mm, and the cross section width h2 of the fixed frame 1 can be 5mm-10mm, and preferably 10mm.

[0035] Optionally, the inner recessed sections 32 are arranged at the bottom and two sides of the main frame 3, so that the top of the fixed frame 1 is in a free state. It can be understood that, by arranging the inner recessed sections 32 at the bottom and two sides of the main frame 3, the fixed frame is only supported and fixed by the main frame 3 at the bottom and two sides, so that the top of the fixed frame 1 is in a free state, which can better enable the top region to elastically deform, thereby improving the comfort of use. The number of positioning holes 33 at the bottom can be three, and the number of positioning holes 33 at the two sides can be four respectively.

[0036] Further, a cross beam 4 is further included, which connects the top of the fixed frame 1 to jointly clamp the outer edge of the mesh cloth 2. It can be understood that, by arranging the cross beam 4, the connection region of the mesh cloth 2 and the top of the fixed frame 1 can be shielded, so that the whole is more beautiful. The cross beam 4 can be a plastic piece, so as to ensure the elastic deformation ability of the region, and the fixed frame 1 and the cross beam 4 can be connected by screws 5.

[0037] Optionally, the positioning column 12 is provided with a connecting hole, and the positioning hole 33 is a countersunk hole. It can be understood that, by arranging the connecting hole, the positioning column 12 and the main frame 3 can be locked by the connection of the self-tapping screw 5 and the connecting hole, and by arranging the countersunk hole, the head of the screw 5 can be hidden in the positioning hole 33, so that the whole is more beautiful. The screw 5 can be a tapered screw 5, and the countersunk portion of the positioning hole 33 can be tapered.

[0038] Optionally, the mesh cloth 2 is a PVC mesh cloth 2. It can be understood that the PVC mesh cloth 2 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., and is easy to clean, so that the whole backrest is more beautiful and simple after installation. The mesh holes on the PVC mesh cloth 2 can be in the shape of an inclined hourglass.

[0039] Optionally, the fixed frame 1 is a plastic frame. It can be understood that, by the above arrangement, the whole fixed frame 1 can be more portable and have lower manufacturing cost, and the fixed frame 1 has a certain elasticity, so that when locked by the screw 5, it can fit the curvature design of the main frame 3, thereby improving the comfort of use. The fixed frame 1 can be made of nylon and glass fiber material, and when the fixed frame 1 is installed on the mounting groove of the main frame 3, the gap h3 between the fixed frame 1 and the side of the mounting groove can be 1mm-2mm, preferably 1.5mm, and the gap h4 between the fixed frame 1 and the bottom of the mounting groove can be 2.4mm-2.6mm, preferably 2.5mm.

[0040] In the description of the utility model, it is understood that the directions or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are the directions or positional relationships shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0041] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0042] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0043] In the utility model, unless otherwise specifically defined and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0044] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description 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 integrate different embodiments or examples described in the present specification.

[0045] Although the embodiments of the present application have been shown and described above, it should be understood that the above-described embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A backrest mesh installation structure, characterized in that, The utility model relates to a PVC net cloth fixing frame, which comprises a fixed frame, a net cloth and a main body frame. The fixed frame surrounds a first hollowed-out area, and the rear side of the fixed frame is provided with a positioning column. The outer edge of the net cloth is connected to the rear side of the fixed frame, so that the net cloth can cover the first hollowed-out area. The main body frame surrounds a second hollowed-out area, and the main body frame is provided with an inner recess along the surrounding direction, which communicates with the second hollowed-out area. The side wall and the bottom wall of the inner recess jointly form a mounting groove with the mounting port facing the front side.

2. The backrest web mounting structure according to claim 1, wherein The bottom wall of the inner recess is provided with a positioning hole penetrating through the rear side of the main body frame.

3. The backrest web mounting structure according to claim 1, wherein The positioning column can be inserted into the positioning hole and connected to the main body frame through a screw, so that the fixed frame is mounted on the main body frame.

4. The backrest web mounting structure according to claim 3, wherein The cross section of the inner recess is L-shaped.

5. The backrest web mounting structure according to claim 1, wherein The inner recess is arranged at the bottom and the two side parts of the main body frame, so that the top of the fixed frame is in a free state.

6. The backrest web mounting structure according to claim 1, wherein A cross beam is further arranged to connect the top of the fixed frame and jointly clamp the outer edge of the net cloth.

7. The backrest web mounting structure according to claim 1, wherein The positioning column is provided with a connecting hole, and the positioning hole is a countersunk hole. The net cloth is a PVC net cloth. The fixed frame is a plastic frame.

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