JPH067699Y2 - Adjustable chair for wheelchair - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair, and more particularly to an adjustable chair used for a wheelchair.

[0002]

2. Description of the Related Art Conventionally, since all of the wheelchairs capable of adjusting the backrest inclination angle and the like are equipped with an electric motor, the structure is complicated and expensive. In order to eliminate the drawbacks, some cylinders use a pneumatic cylinder or are equipped with a spring operation mechanism, but the cost will be lower, but since there is no mechanism to assist power, the patient with a cleft wound must get the help of another person. If not available. Also, the width of the seat is moved by a fitting pipe type mainly due to the change of the handrail and the span of the side frame, and then further tightened with bolts to fix it.The seat depth is fixed type and adjusted for each user The handrail and the side frame are integral and cannot be adjusted.

[0003]

The problem to be solved by the present invention is that the inclination angle of the chair can be freely manipulated without using power.
The purpose of the present invention is to provide a wheelchair in which the width of the left and right chairs and the depth of the seat can be adjusted.

[0004]

[Means for Solving the Problems] The problems of the present invention are as follows.

A main frame, a seat frame, a backrest frame, and a side frame. A tilt angle adjusting mechanism operated by a swing lever is provided on one side of the main frame, and the seat frame and side frames standing upright on both sides of the seat frame. An adjustable chair for wheelchairs equipped with a manual seat width adjustment mechanism and a seat depth adjustment mechanism that slides the front edge of the seat frame back and forth by hand.

[0006]

When the passenger pushes the swing lever 601 to the outside, the stop pin 603 disengages the disc 610, the swing lever 601 can move back and forth, and the connecting rod 615 is driven to slide the slide frame 616 into the side frame bottom pedestal. The backrest 3 can be moved forward and backward by interlocking with 7, and the backrest 3 can be moved around the rotary shaft 5 as a fulcrum to change the seat angle. When the hand is released when adjusted to an appropriate angle, the swing lever 601 is positioned in the hole 611 of the disk 610 by the action of the spring 604, and the seat is fixed.

[0007]

【Example】

In the assembly perspective view of FIG. 1, 1 is a main frame, 2 is a seat frame, 3 is a backrest frame, 4 is a side frame, and the above four frames form a main part. The seat frame 2 is connected to the backrest frame 3,
The horizontal rotation shaft 5 is inserted through the middle portion of the backrest frame 3 and the handrail pieces 11 are attached to both ends thereof. Mainframe 1
An inclination angle adjusting mechanism 6 is provided on the left side of the. Tilt angle adjustment mechanism 6
As shown in FIGS. 2 and 3, the pin portion 603 at the tip of the L-shaped swing lever 601 is fitted into the circular groove 602 ′ of the pedestal 602, the pedestal 602 is hollow, and the coil spring 604 is put on the pedestal 602. The pin 605 is inserted into the pedestal 602 from the raised portion 606 'of the rotating plate 606 to allow the spring 604 to penetrate therethrough, and the screw 609 is provided on the back surface of the rotating plate 606 so as to project therefrom. 6
Reference numeral 10 denotes a disk fixed to the left side surface of the main frame 1, and the screw 609 is inserted through the central hole 612 and fixed to the main frame with a nut. The disk 610 is semicircular and has a plurality of small holes 611 formed in an arc shape. As a result, the pin portion 603 of the swing lever 601 which receives the action of the spring 604 enters one place of the small hole 611. A circular hole 608 (see FIG. 2) is provided at the lower end of the turntable 606.
Then, the connecting rod 615 is connected to this with a split pin 613, and the other end of the connecting rod 615 is connected to the slide frame 616 slidably fitted to the main frame 1. Slide frame 6
A bearing piece 701 protruding from a bottom pedestal 7 fixed below the side frame 4 is pivotally attached to the upper end of 16 by a pin 617,
Similarly, the right side is also provided with the slide frame 616 and its pivotal support mechanism.

FIG. 4 shows a seat width and seat depth adjusting mechanism. A side frame bottom pedestal 7 is provided under the side frame 4.
Is fixed, and the circular pipe end 702 thereof is inserted into the circular pipe of the seat frame 2, and is inserted into the circular pipe of the seat frame 2 via the ring 802 by the bolt 801. The circular pipe end 702 has one inclined surface, and can be mixed with a block 803 having another inclined surface. The block 803 is screwed into the bolt 801, and the block 803 is rotated by the rotation of the bolt 801 on the inner wall contacting the circular pipe of the seat frame 2 on the outer wall to slide on the inclined surface of the circular pipe end 702 of the bottom pedestal 7 and the wedge pin. By the action of, the circular pipe of the bottom pedestal 7 and the block 803 are tightened to the inner wall of the circular pipe of the seat frame 2 to adjust the span between the side frames 4,
It can be adjusted by the seat adjusting mechanism 8.

The seat depth is such that both the seat frame 2 and the seat front edge 9 are fitted to each other, that is, two circular pipes 901 are connected to the seat front edge 9 and inserted into the circular pipe 201. Pull out and adjust to the appropriate seat depth. Similarly, the related positions are fixed by the bolt 1001 and the block 1002. That is, with the bolt 1001, the circular pipe 90 of the seat front edge 9
Once penetrated through 1, the block 1002 screwed onto the bolt 1001 has its sloping surface aligned with the sloping surface at the front end of the circular tube 901 to compose the adjusting mechanism 10 (FIG. 1). Bolt 100
Rotate 1 to move block 1002 to block 10
02, the circular pipe 901 is fixed to the inner wall of the circular pipe 201 of the seat frame 2.

FIG. 5 shows a handrail mechanism, which is a handrail plate 110.
Reference numeral 1 denotes a flat plate 1102 and a circular sleeve 1103. A protrusion block 1104 is provided on one side of the sleeve 1103. A handrail plate 1101 is fitted into a front end head 1106 of a handrail frame 1105 through a circular hole of the sleeve 1103. The inside of the handrail frame 1105 is a through hole, the other end 1107 is an inclined surface, and the outer diameter of the ring 1108 is large, and one side also has one projecting block 1109.
101 a handrail frame 1105 front end head 1106
And the projection block 1104 of the handrail plate 1101.
Is pushed up by the protruding block 1109 of the handrail frame 1105, and the flat plate 1102 of the handrail plate 1101 is held horizontally. Projection block 110 of handrail frame 1105
9 is set to the outside angle of the ring 1108, and the handrail plate 1
101 turns about 120 degrees more backwards. Bolt 11
After combining the ring 1114 with 10
When the entire set is inserted into the back frame rotary shaft 5, the both ends of the rotary shaft 5 are fitted into the sleeve 101 of the main frame 1. In addition, the bolt 1112 is passed through the screw hole 102 of the sleeve 101, the circular hole 501 of the rotary shaft 5 and the long hole 1113 of the handrail frame 1105, and the bolt is tightened by adjusting to an appropriate width.

6 and 7, reference numeral 7 denotes a bottom pedestal, the side frame 4 is provided with a rotating mechanism on one side, and the bottom pedestal 7 is provided under the side frame 4 and is fitted in the circular pipe 1201 to form the circular pipe 12.
01 is provided with a spring 1211 and pushes the adjusting lever 1212 of the side frame backward. When the connecting action of the tube pin 1213 is adjusted, the side frame 4 connected to the adjusting lever 1212 is also pushed backward, and the fixing pin 1214 is used to Tube 1
It is locked in a hole 1215 at one end of 201. First, move the side frame 4 slightly forward to fix the fixing pin 121.
When 4 is separated from the hole 1215, the side frame 4 can be rotated 90 degrees toward the outside to be in the horizontal position as shown in FIG. 7.

[0012]

[Effect] According to the present invention, a passenger can adjust the chair by hand and sit and use it comfortably. In particular, the device of the present invention does not have a prime mover, so it is inexpensive and easy to operate.

[Brief description of drawings]

FIG. 1 is a perspective view.

FIG. 2 is an exploded perspective view of a tilt angle adjusting mechanism.

FIG. 3 is a side view showing a tilt angle adjusting mechanism section.

FIG. 4 is a plan view of a seat width / depth adjusting mechanism.

FIG. 5 is an exploded perspective view of a handrail mechanism.

FIG. 6 is a side view of a side frame portion.

FIG. 7 is a perspective view showing a state in which the side frame is horizontally tilted.

[Explanation of symbols]

 1 Main Frame 2 Seat Frame 3 Backrest Frame 4 Side Frame 5 Rotation Shaft 6 Tilt Angle Adjustment Mechanism 7 Side Frame Bottom Pedestal 8 Seat Width Adjustment Mechanism 9 Chair Front Edge 10 Seat Depth Adjustment Mechanism 11 Handrail Mechanism 12 Side Frame Rotation Mechanism

 ─────────────────────────────────────────────────── ───Continued from the front page (72) Inventor Wu Yi Wei Taiwan, Chun Tung Shin Ju Shen, Chun Shin Road, Section 4, No. 195, (72) Inventor Bees Taiwan, Chu Tsun Shin Ju Sheng , Chun Sing Road, Section 4, Number 195, (72) Inventor Lin Yun-Wu Taiwan, Chung Sing Chu Sheng, Chun Sing Road, Section 4, Number 195,

Claims (1)

[Scope of utility model registration request] 1. A main frame, a seat frame, a backrest frame, and a side frame. A tilt angle adjusting mechanism operated by a swing lever is provided on one side of the main frame, and the seat frame and the left and right sides thereof are erected. Adjustable chair for wheelchair equipped with a manual seat width adjustment mechanism on the side frame and a seat depth adjustment mechanism that slides the front edge of the seat frame back and forth by hand.