Folding wheelchair chair back angle adjusting device

Abstract

The utility model relates to the technical field of wheelchairs, in particular to a folding wheelchair chair back angle adjusting device which comprises a wheelchair body, and a chair back angle adjusting assembly is arranged on the upper side of the wheelchair body. The chair back angle adjusting assembly comprises a wheelchair seat arranged on the upper side of the wheelchair body, reinforcing rods are arranged on the two sides of one end of the wheelchair seat respectively, a first connecting block is arranged on the tops of the reinforcing rods, a second connecting block is arranged on one side of the first connecting block, and a reinforcing frame is arranged at one end of the second connecting block. According to the chair back angle adjusting device for the foldable wheelchair, the telescopic cylinder is controlled by the external controller to stretch out and draw back, the angle between the chair back and the wheelchair seat is convenient to adjust, the first connecting block and the second connecting block can be fixed through the bolts, and therefore the chair back angle adjusting device for the foldable wheelchair is convenient to use. Therefore, the supporting force of the chair back and the wheelchair seat is reinforced, and a user can conveniently adjust the angle of the chair back.

Description

TECHNICAL FIELD

[0001] The utility model relates to wheelchair technical field, especially relates to folding wheelchair chair back angle adjusting device. BACKGROUND

[0002] Wheelchair is the auxiliary walking equipment that the disabled person daily life must, wheelchair is in normal use, personnel sit on the chair, carry out wheelchair control or walk.

[0003] In the patent with the publication number CN201312865Y proposes a folding wheelchair chair back folding mechanism, in the patent including folding rod is left and right symmetrical structure, folding rod from two ends to the middle is in proper order end folding piece, connecting rod, connecting cylinder, swing arm, end folding piece one end is fixedly connected with handle, end folding piece other end is hinged with the one end of connecting rod, removes the attachment piece on the chair back, such as headrest leans etc. Component, then manually touches folding button and makes it slide to one side, folding button slides to one side will drive sliding sleeve to slide to one side, at this time, push folding rod to wheelchair inner side, then folding rod folds inwards along the middle part hinged axis, namely can complete the folding of chair back. When needing to stretch, pull up folding rod to the opposite direction, simultaneously touch folding button, when folding rod straightens, release folding button, then sliding sleeve rebounds into connecting arm due to the action of spring, like this, folding rod will not fold under the condition that folding button is not touched, but there are still the following problems in the patent:

[0004] The above-mentioned wheelchair can be folded as a whole during use, but the angle of the chair back cannot be adjusted, so that the user cannot adjust the reclining angle according to the comfortable posture, and the wheelchair is inconvenient to operate and use.

[0005] In view of the above problems, it is necessary to design a folding wheelchair chair back angle adjusting device to overcome the above problems. SUMMARY

[0006] The main purpose of the utility model is to provide folding wheelchair chair back angle adjusting device, can effectively solve the problem in the background art.

[0007] In order to achieve the above object, the technical scheme adopted by the utility model is:

[0008] Folding wheelchair chair back angle adjusting device, including wheelchair main body, the upper side of wheelchair main body is provided with chair back angle adjusting assembly;

[0009] The chair back angle adjusting assembly comprises a wheelchair seat arranged on the upper side of the wheelchair body, reinforcing rods arranged on both sides of one end of the wheelchair seat, a first connecting block arranged on the top of the reinforcing rod, a second connecting block arranged on one side of the first connecting block, a reinforcing frame arranged on one side of the second connecting block, a chair back arranged on one side of the reinforcing frame, armrests respectively arranged on both sides of the front end of the reinforcing frame, a bolt arranged on the middle part of the first connecting block and the second connecting block, a connecting plate arranged on the bottom end of the rear side of the wheelchair body, a first recessed connecting block arranged on the top of the connecting plate, a rotating block clamped on the inner wall of the first recessed connecting block, an extension cylinder arranged on one end of the rotating block, a second recessed connecting block clamped on the outer wall of the top of the extension cylinder, and the second recessed connecting block is arranged on one side of the outer wall of the chair back.

[0010] As a preferred scheme of the utility model, a push hand is arranged on the rear side of the wheelchair body.

[0011] As a preferred scheme of the utility model, the wheelchair seat and the wheelchair body are detachably arranged, and the reinforcing rod and the wheelchair body are fixedly connected.

[0012] As a preferred scheme of the utility model, the first connecting block and the reinforcing rod are fixedly connected, the first connecting block and the second connecting block are detachably arranged through the bolt, and the second connecting block and the reinforcing frame are fixedly connected.

[0013] As a preferred scheme of the utility model, the reinforcing frame and the chair back are detachably arranged, the armrests and the reinforcing frame are fixedly connected, the connecting plate and the wheelchair body are fixedly connected, the first recessed connecting block and the connecting plate are fixedly connected, and the rotating block and the first recessed connecting block are rotatably connected.

[0014] As a preferred scheme of the utility model, the rotating block and the extension cylinder are fixedly connected, the extension cylinder and the second recessed connecting block are rotatably connected, and the second recessed connecting block and the chair back are fixedly connected. Advantageous effects

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1、in the utility model, through design folding wheelchair chair back angle adjusting device, utilize external controller control extension cylinder telescopic, convenient for adjusting the angle between chair back and wheelchair seat, and through bolt can first connecting block and second connecting block are fixed, thereby reinforcing the supporting force of chair back and wheelchair seat, convenient for user to adjust the angle of chair back. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the structure schematic diagram of the utility model wheelchair body.

[0018] Figure 2 is the structural schematic view of wheelchair seat and chair back of the utility model;

[0019] Figure 3 is the structural schematic view of telescopic cylinder and rotating block of the utility model;

[0020] Figure 4 is the structural schematic view of A place of the utility model.

[0021] In the drawing: 1, wheelchair main body; 2, push hand; 3, chair back angle adjusting assembly; 301, wheelchair seat; 302, chair back; 303, armrest; 304, reinforcing rod; 305, reinforcing frame; 306, first connecting block; 307, second connecting block; 308, bolt; 309, connecting plate; 310, telescopic cylinder; 311, first concave connecting block; 312, rotating block; 313, second concave connecting block. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0023] As shown in Figures 1-4 , the folding wheelchair chair back angle adjusting device, including wheelchair main body 1, the upper side of wheelchair main body 1 is provided with chair back angle adjusting assembly 3;

[0024] Chair back angle adjusting assembly 3 includes wheelchair seat 301 arranged on the upper side of wheelchair main body 1, the both sides of one end of wheelchair seat 301 are provided with reinforcing rod 304, the top of reinforcing rod 304 is provided with first connecting block 306, one side of first connecting block 306 is provided with second connecting block 307, one end of second connecting block 307 is provided with reinforcing frame 305, one side of reinforcing frame 305 is provided with chair back 302, the both sides of the front end of reinforcing frame 305 are respectively installed with armrest 303, the middle part of first connecting block 306 and second connecting block 307 is installed with bolt 308, the bottom end of rear side of wheelchair main body 1 is installed with connecting plate 309, the top of connecting plate 309 is provided with first concave connecting block 311, the inner wall of first concave connecting block 311 is clamped with rotating block 312, one end of rotating block 312 is provided with telescopic cylinder 310, the top outer wall of telescopic cylinder 310 is clamped with second concave connecting block 313, one end of second concave connecting block 313 is arranged on one side outer wall of chair back 302.

[0025] Please refer to attached Figure 1 , attached Figure 2 and attached Figure 3As shown, the rear side of the wheelchair body 1 is provided with a push handle 2, the wheelchair seat 301 is detachably installed between the wheelchair body 1, the reinforcing rod 304 is fixedly connected with the wheelchair body 1, the first connecting block 306 is fixedly connected with the reinforcing rod 304, the first connecting block 306 and the second connecting block 307 are detachably installed through the bolt 308, the second connecting block 307 is fixedly connected with the reinforcing frame 305, the reinforcing frame 305 is detachably installed with the chair back 302, the armrest 303 is fixedly connected with the reinforcing frame 305, the connecting plate 309 is fixedly connected with the wheelchair body 1, the first concave connecting block 311 is fixedly connected with the connecting plate 309, the rotating block 312 is rotatably connected with the first concave connecting block 311, the rotating block 312 is fixedly connected with the telescopic cylinder 310, the telescopic cylinder 310 is rotatably connected with the second concave connecting block 313, and the second concave connecting block 313 is fixedly connected with the chair back 302.

[0026] The second connecting block 307 is connected with the first connecting block 306 through the bolt 308, the operation is simpler, and the angle of the chair back 302 is adjusted through the telescopic cylinder 310, so that the structure is simple and convenient for people to use better.

[0027] The utility model discloses a folding wheelchair chair back angle adjusting device, in working, need to adjust the chair back 302, make it more fit the back of the user, through the external controller control telescopic cylinder 310 telescopic, telescopic process passes through telescopic cylinder 310 one end and the second concave connecting block 313 inner wall rotation, the other end of telescopic cylinder 310 rotating block 312 and the first concave connecting block 311 inner wall rotation, cooperate chair back 302 angle adjustment, through manual screwing two groups of bolts 308, make first connecting block 306 and second connecting block 307 fastening, be convenient for the fixed chair back 302, thereby make chair back 302 angle adjustment more simple, armrest 303 play the purpose of user's grip, and push handle 2 play the purpose of people's convenient pushing wheelchair body 1.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A folding wheelchair backrest angle adjustment device comprising a wheelchair body (1), characterized in that: The upper side of the wheelchair body (1) is provided with a backrest angle adjusting assembly (3); The backrest angle adjusting assembly (3) comprises a wheelchair seat (301) provided on the upper side of the wheelchair body (1), the two sides of one end of the wheelchair seat (301) are respectively provided with reinforcing rods (304), the top of the reinforcing rod (304) is provided with a first connecting block (306), one side of the first connecting block (306) is provided with a second connecting block (307), one end of the second connecting block (307) is provided with a reinforcing frame (305), one side of the reinforcing frame (305) is provided with a backrest (302), the front ends of the two sides of the reinforcing frame (305) are respectively provided with armrests (303), the middle parts of the first connecting block (306) and the second connecting block (307) are provided with bolts (308), the bottom end of the rear side of the wheelchair body (1) is provided with a connecting plate (309), the top of the connecting plate (309) is provided with a first recessed connecting block (311), the inner wall of the first recessed connecting block (311) is clamped with a rotating block (312), one end of the rotating block (312) is provided with an extension cylinder (310), the top outer wall of the extension cylinder (310) is clamped with a second recessed connecting block (313), one end of the second recessed connecting block (313) is provided on the outer wall of one side of the backrest (302).

2. The folding wheelchair backrest angle adjustment device according to claim 1, characterized in that: The rear side of the wheelchair body (1) is provided with a push hand (2).

3. The folding wheelchair backrest angle adjustment device of claim 1, wherein: The wheelchair seat (301) and the wheelchair body (1) are detachably installed, and the reinforcing rod (304) and the wheelchair body (1) are fixedly connected.

4. The folding wheelchair backrest angle adjustment device of claim 1, wherein: The first connecting block (306) and the reinforcing rod (304) are fixedly connected, the first connecting block (306) and the second connecting block (307) are detachably installed through the bolt (308), and the second connecting block (307) and the reinforcing frame (305) are fixedly connected.

5. The folding wheelchair backrest angle adjustment device of claim 1, wherein: The reinforcing frame (305) and the backrest (302) are detachably installed, the armrest (303) and the reinforcing frame (305) are fixedly connected, the connecting plate (309) and the wheelchair body (1) are fixedly connected, the first recessed connecting block (311) and the connecting plate (309) are fixedly connected, and the rotating block (312) and the first recessed connecting block (311) are rotatably connected.

6. The folding wheelchair backrest angle adjustment device of claim 1, wherein: The rotating block (312) and the extension cylinder (310) are fixedly connected, the extension cylinder (310) and the second recessed connecting block (313) are rotatably connected, and the second recessed connecting block (313) and the backrest (302) are fixedly connected.

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