CN2744330Y - Chair frame structure of folding wheelchair - Google Patents

Abstract

The utility model relates to a chair frame structure of folding wheelchair, including two side bearer and folding frame, wherein, two side bearer are established chair back pole and seat support pole, and be equipped with the folding frame that can prop two side bearer between two side bearers, and establish the seatpad pole on folding frame, and lean on the seat pole of side bearer with the seatpad pole when folding frame props one, and the seatpad pole of this folding frame is the concave shaping arc concave section of arc near back of the chair pole department, and continue this arc concave section and extend forward and form the convex section of arc, constitute respectively by this arc concave section and convex section of arc and take district and support district, in order to support buttock and the thigh of person of taking completely, and for a wheelchair chair frame designer who accords with human engineering.

Description

Chair frame structure of folding wheelchair

technical field

The utility model relates to a chair frame structure of a foldable wheelchair, in particular to a designer of a wheelchair frame conforming to ergonomics for comfortable riding.

Background technique

Press, among the common collapsible wheelchair structures at present, there is one as shown in Fig. 4, and its structure mainly includes two chair frames A, folding frames B, and two seat cushion rods C, wherein, the two side chair frames A of the wheelchair Between them is a set of folding frames B formed by cross pivoting of two connecting rods B1, so as to pivotally connect and stretch the chair frames A on both sides, and pivotally connect the seat rod C at the upper end of the connecting rods B, and On the chair frame A, several pieces of fixing pieces A1 are extended relative to the seat cushion rod C, so that when the folding frame B is stretched and the two sides of the chair frame A are placed in parallel, the seat cushion rod C on it is suitable for the folding frame B Stretch and lean against the anchor piece A1 extended by the chair frame A, so that the seat cushion bar C can be stably supported by the anchor piece A1 on the chair frame A, so that the ride is more stable and comfortable.

Although the above-mentioned known structure has the advantage of being foldable, it is not difficult to find that it still has some shortcomings in actual use, mainly because the seat post is set as a straight rod body. When the upholstery is worn, the upholstery it is worn on will also form a straight seat surface.

When the occupants ride on it for a long time, they often feel uncomfortable and cannot sit for a long time, mainly because the human body's buttocks need to support the weight of the entire upper body, so the weight distribution of the buttocks and thighs is also different; however, the structure The seat cushion is set as a flat panel. When the buttocks and thighs are placed on the flat seat cushion at the same time, the weight of the upper body is often only concentrated on the curved buttocks. It is easy to be paralyzed and feel uncomfortable, so this structure does not conform to ergonomics.

Utility model content

The utility model provides an ergonomic chair frame design for a folding wheelchair to make riding more comfortable.

In order to achieve the above object, the solution of the utility model is: the chair frame structure of the foldable wheelchair includes two side frames and a foldable frame, and the two side frames are provided with a chair back bar and a seat bar, and are connected to the two side frames. There is a folding frame formed by cross-pivoting two connecting rods in between, so as to pivotally stretch the two side frames, and a seat cushion bar is arranged on the upper end of the connecting rod of the folding frame, which is stretched by the folding frame And against the seat rod of the side frame, wherein the seat cushion rod of the folding frame near the seat back rod is an arc concave forming arc concave section, and continues the arc concave section and extends forward to form an arc convex section.

There is a pivot block with accommodating opening between the back bar and the seat bar, and the seat bar is provided opposite to the pivot block so that the seat cushion bar rests on it when the folding frame is stretched. Notched holding block.

After adopting the above-mentioned scheme, when the seat cushion cloth is placed on the arc concave section and the arc convex section in the future, a seating area and a supporting area can be formed respectively, so as to fully support the buttocks and thighs of the occupant. The seat rod is shaped according to the curve of the lower body of the human body, so when riding, the concave section of the seat rod will form a seating area that can support the buttocks, and the convex section will form a support area that can support the thighs, so As a result, the seating area and the support area can completely lean against the buttocks and thighs of the occupant, so that the occupant can ride on it more comfortably and stably.

Description of drawings

Fig. 1 is a three-dimensional exploded view of the utility model;

Fig. 2 is the three-dimensional combination schematic diagram of the present utility model;

Fig. 3 is the use state reference figure of the utility model;

Fig. 4 is a schematic perspective view of a conventional structure.

Symbol Description

1 side frame 11 chair back bar

12 Handrail bar 13 Pivot block

131 Accommodating port 14 Seat post

141 notch 142 holding block

15 bottom rods 16 rods

2 folding racks 21 connecting rods

211 Collar 22 Seat post

221 Arc Concave Section 222 Arc Convex Section

23 Support piece 231 Locating ring

3 seat upholstery cloth 31 seating area

32 support area

A chair frame A1 fixed plate

B folding frame B1 connecting rod

C seat post

Detailed ways

As shown in Figure 1, the utility model comprises two side frames 1 and a folding frame 2, wherein:

The two side frames 1 are provided with a chair back bar 11, an armrest bar 12, a pivot block 13, a seat bar 14, a bottom bar 15 and a support bar 16, and the armrest bar 12 is pivotally arranged on the seat back bar 11, The seat back bar 11 is connected to the seat bar 14 and the bottom bar 15 through the pivot block 13, and a support bar 16 is provided at the ends of the seat bar 14 and the bottom bar 15 as reinforcement; The top end of the connecting block 13 is recessed to form an accommodating opening 131, and a holding block 142 with a notch 141 is fixedly provided on the seat rod 14 opposite to the accommodating opening 131 of the pivot block 13;

A foldable frame 2 is formed by intersecting and pivotally connecting two connecting rods 21. The bottom ends of the two connecting rods 21 form a set of rings 211, and the top ends of the two connecting rods 21 are fixedly provided with a pad rod 22. The seat post 22 is an arc concave section 221, and extends forward to form an arc convex section 222 following the arc concave section 221, and two supporting pieces 23 are pivotally arranged on the surface of the two connecting rods 21. The supporting pieces 23 One end is pivotally arranged on the second connecting rod 21, and the other end forms a positioning ring 231;

By this, when assembling, be to make folding frame 2 with the collar 211 of its connecting rod 21 bottom end and the locating ring 231 of support plate 23 respectively cover on the bottom bar 15 of two side frames 1 and seat bar 14, In order to control the expansion or contraction of the two side frames 1, finally, the bottom bar 15 and the seat bar 14 are respectively connected with the pivot block 13 to form.

When the two connecting rods 21 of the foldable frame 2 are stretched, the two side frames 1 will be stretched, and the two ends of the seat rod 22 on the foldable frame 2 are abutted against the pivot joints 13 of the two side frames 1. The accommodating opening 131 and the notch 141 of the holding block 142 are positioned so that the two side frames 1 can be stably extended.

Since the seat post 22 on the folding frame 2 itself is provided with an arc concave section 221 and an arc convex section 222, as shown in Figure 2, after the seat cloth 3 is worn, the arc on the seat post 22 will A concave seat area 31 is formed at the concave section 221, and a slightly convex support area 32 is formed at the arc convex section 222, so that when the occupant rides on it, as shown in Figure 3, the seat cloth 3 is planned The seating area 31 and the support area 32 will be completely fitted along the occupant's buttocks and thighs, and can fully support the occupant's buttocks and thighs, so as to disperse the weight of the human body, so that the design of the wheelchair conforms to ergonomic design .

In addition, since the seat area 31 of the seat cloth 3 is formed in a slightly concave shape following the arc concave section 221 of the seat post 22, the buttocks of the occupant can be stably accommodated therein without slipping when the wheelchair is pushed. , so that today's passengers feel more safe and comfortable.

To sum up, the chair frame structure of the foldable wheelchair provided by the utility model conforms to ergonomics and can make the occupant sit comfortably on it. Apply according to law.

Claims (2)

1. A chair frame structure of a foldable wheelchair, which includes two side frames and a folding frame, wherein the two side frames are provided with a back bar and a seat bar, and two connecting rods are arranged between the two side frames The folding frame formed by cross-pivoting is used to pivotally stretch the two side frames, and the seat cushion rod is arranged at the upper end of the connecting rod of the folding frame. The seat rod is stretched by the folding frame and leans against the side frame On the seat post, it is characterized in that: The seat cushion rod of the folding frame is formed by an arc concave segment near the seat back rod, and the arc concave segment is extended forward to form an arc convex segment following the arc concave segment. 2. The chair frame structure of a foldable wheelchair according to claim 1, wherein a pivot block with accommodating openings is provided between the back bar and the seat bar, and the seat bar is opposite to each other. The pivot block is provided with a holding block with a notch so that the seat cushion rod rests on it when the folding frame is stretched.

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