Ergonomic chair back structure for electric wheelchair

Abstract

The ergonomic chair back structure comprises a backrest frame, the middle of the backrest frame is hollowed out, a backrest cloth cover is arranged on the front side of the backrest frame, and the periphery of the backrest cloth cover is fixedly connected with the periphery of the backrest frame. The backrest of the electric wheelchair adopts the hollow structure, the backrest cloth cover is arranged in the hollow area, contact with the back of a user is formed, the back of the user is prevented from being in contact with the hard framework, deformation of the backrest cloth cover is matched with the waist rest, the backrest fits the curve of the back of the user better, and riding comfort is effectively improved. And the fixing of the lower pressing strip enables the connection of the backrest cloth cover to be more stable, and is convenient to disassemble and replace.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric wheelchair field relates to a kind of ergonomic chair back structure for electric wheelchair. BACKGROUND

[0002] Electric wheelchair is more and more popular in action obstacle group and old group, for this group, the comfort of riding experience is the key factor, the existing electric wheelchair design is mainly with the internal iron or aluminum skeleton, and the overall structure is hard, the back of the back is too flat, for action obstacle group and old group, the back pressure is too large in long sitting, and the comfort is not good. SUMMARY

[0003] The utility model discloses a kind of ergonomic chair back structure for electric wheelchair to overcome the deficiency of prior art.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A kind of ergonomic chair back structure for electric wheelchair, including backrest frame, the middle part of the backrest frame is hollow, the front side of the backrest frame is provided with backrest cloth surface, and the outer periphery of the backrest cloth surface is fixedly connected with the outer periphery of the backrest frame.

[0006] Further, the middle part of the backrest frame is provided with waist rest in hollow, and the two ends of the waist rest are respectively fixedly connected with the two sides of the backrest frame, and the middle part of the waist rest is concave to form a given radian.

[0007] Further, it further includes lower pressing strip, and the lower pressing strip is arranged at the bottom of the backrest frame, and the lower pressing strip is detachably connected with the backrest frame, and the lower pressing strip and the outer periphery of the backrest frame are surrounded to form a mouth-shaped structure, and the outer periphery of the lower pressing strip is used to connect the backrest cloth surface.

[0008] Further, it further includes headrest frame, and the headrest frame includes headrest frame and lifting column, and the backrest frame is provided with clamping groove for inserting the lifting column.

[0009] Further, the rear side of the backrest frame is fixedly connected with push handrail, and the push handrail is formed with gripping portion for user gripping.

[0010] Summarized above, the utility model has the advantages that:

[0011] The backrest of the electric wheelchair adopts a hollow structure, a backrest cloth surface is arranged in the hollow area to form contact with the back of the user, the user's back is prevented from contacting the hard framework, the deformation of the backrest cloth surface is matched with the setting of the waist rest, the back curve of the user is more fitted, the riding comfort is effectively improved, the connection of the backrest cloth surface is more stable due to the fixation of the lower pressing strip, and the lower pressing strip can be conveniently disassembled and replaced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is an explosion structure schematic view of the utility model.

[0013] Figure 2 It is Figure 1 It is a structure schematic view of the backrest frame part.

[0014] Identified in the figure: 1, backrest cloth surface; 2, lower pressing strip; 3, backrest frame; 31, connecting part; 4, pushing handrail; 5, clamping groove; 6, headrest frame; 7, headrest cloth surface; 8, waist rest. DETAILED DESCRIPTION

[0015] The implementation mode of the utility model will be explained below through specific examples, and other advantages and effects of the utility model can be easily understood by those skilled in the art according to the content disclosed in the specification. The utility model can also be implemented or applied through different specific implementation modes, and various modifications or changes can be made based on different viewpoints and applications without departing from the spirit of the utility model. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0016] It should be noted that the diagrams provided in the following examples only illustrate the basic concept of the utility model in a schematic manner, and only the components related to the utility model are shown in the diagrams, not the number, shape and size of the components during actual implementation. The shape, number and proportion of each component during actual implementation can be changed arbitrarily, and the component layout pattern can also be more complex.

[0017] All directional indications (such as up, down, left, right, front, back, horizontal, vertical,...) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0018] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the utility model may actually be an approximate parallel relationship, and the vertical relationship may actually be an approximate vertical relationship.

[0019] The embodiment provides a kind of ergonomic chair back structure for electric wheelchair, setting in electric wheelchair frame, for the back of user leans, including backrest frame 3 and headrest frame 6.

[0020] The middle part of the backrest frame 3 is hollow, and the front side of the backrest frame 3 is a backrest surface for a user to lean against.

[0021] The backrest frame 3 further comprises a pressing strip 2 arranged at the bottom of the backrest frame 3, and the pressing strip 2 is fixedly connected with the backrest frame 3 and combined with the outer periphery of the backrest frame 3 to form a mouth-shaped structure, and the outer periphery of the backrest cloth surface 1 is fixedly connected with the outer periphery of the mouth-shaped structure, so that the backrest cloth surface 1 can be quickly disassembled and replaced by disassembling and assembling the pressing strip 2.

[0022] Further, the middle part of the backrest frame 3 is hollow, and the middle part of the backrest frame 3 is hollow, and the front side of the backrest frame 3 is a backrest surface for a user to lean against.

[0023] The left and right sides of the backrest frame 3 are provided with a connecting part 31 for connecting with a frame, and the connecting part 31 is rotatably connected with the frame, so that the user can adjust the angle of the backrest frame 3 relative to the frame.

[0024] The rear side of the backrest frame 3 is further provided with a pushing handrail 4, and the pushing handrail 4 is fixedly connected with the backrest frame 3 and is provided with a gripping part for a user to grip to push the electric wheelchair.

[0025] The headrest frame 6 is arranged at the top of the backrest frame 3 and comprises a headrest frame and a lifting column, and the front part of the headrest frame is provided with a headrest cloth surface 7 for a user to lean against, and the rear top of the backrest frame 3 is provided with a clamping groove 5, and the clamping groove 5 is arranged in a vertical direction to enable the lifting column to be inserted into the clamping groove 5 in a vertical direction, and the clamping groove 5 is provided with a clamping buckle capable of elastically moving, and the lifting column is provided with a clamping tooth in a vertical direction for clamping cooperation with the clamping buckle, so that the lifting column can be locked up and down relative to the clamping groove 5 to adjust the appropriate height of the headrest frame 6.

[0026] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

Claims

1. An ergonomic chair back structure for a power wheelchair, characterized by The backrest frame (3) is hollowed in the middle part, and the front side of the backrest frame (3) is provided with a backrest cloth surface (1), and the outer periphery of the backrest cloth surface (1) is fixedly connected with the outer periphery of the backrest frame (3).

2. An ergonomic chair back structure for use with an electrically powered wheelchair according to claim 1, wherein The hollowed part in the middle part of the backrest frame (3) is provided with a waist rest (8), and the two ends of the waist rest (8) are fixedly connected with the two sides of the backrest frame (3), and the middle part of the waist rest (8) is concave to form a certain radian.

3. An ergonomic chair back structure for use with an electrically powered wheelchair according to claim 2, wherein Further comprising a pressing strip (2) arranged at the bottom of the backrest frame (3), and the pressing strip (2) is detachably connected with the backrest frame (3), and the pressing strip (2) and the outer periphery of the backrest frame (3) form a mouth-shaped structure, and the outer periphery of the pressing strip (2) is used for connecting the backrest cloth surface (1).

4. The ergonomic chair back structure for power wheelchair of claim 1, wherein, Further comprising a headrest frame (6) comprising a headrest frame and a lifting column, and the backrest frame (3) is provided with a clamping groove (5) for inserting the lifting column.

5. The ergonomic chair back structure for power wheelchair of claim 1, wherein, The backrest frame (3) is fixedly connected with a pushing handrail (4) on the rear side, and the pushing handrail (4) forms a gripping part for the user to grip.

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