JPH0565323U - Adjustable chair for wheelchair - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a chair for a wheelchair that can adjust the tilt angle of the chair, the width of the left and right, and the depth of the seat without using power. [Structure] 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. The seat depth adjustment mechanism was equipped with a manual seat width adjustment mechanism, and the front edge of the seat frame can be slid back and forth by hand. [Effect] A passenger can adjust the chair by hand and sit and use it comfortably. Because it does not use power, it can be cheap.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wheelchair, and more particularly to an adjustable chair used for a wheelchair.

[0002]

[Prior Art]

 Conventionally, all of the things that can adjust the inclination angle of the backrest of a wheelchair are equipped with an electric motor, so 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, a patient with a cleft injury will need the help of another person. It cannot be used without it. Also, the width of the seat is moved by a pipe type mainly by fitting due to the change of the handrail and the span of the side frame, and then it is further tightened with bolts to fix it. It cannot be adjusted individually, which affects riding comfort and cannot be adjusted because the handrail and side frame are integrated.

[0003]

[Problems to be solved by the device]

 An object of the present invention is to provide a wheelchair in which the tilt angle of the chair can be freely controlled without using power and the left and right widths of the chair and the seat depth 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]

[Operation] When the passenger pushes the rocking lever 601 to the outside, the stop pin 603 disengages the disk 610, the rocking lever 601 can move back and forth, and the connecting rod 615 is driven to move the slide frame 616 to the side surface. The frame base 7 is interlocked to move back and forth, and the backrest 3 moves about the rotation axis 5 as a fulcrum to change the angle of the seat. 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 an intermediate portion of the backrest frame 3, and the handrail pieces 11 are attached to both ends thereof. A tilt angle adjusting mechanism 6 is provided on the left side of the main frame 1. As shown in FIGS. 2 and 3, the tilt angle adjusting mechanism 6 fits the pin portion 603 at the tip of the L-shaped swing lever 601 into the circular groove 602 ′ of the pedestal 602, the pedestal 602 is hollow, and the coil spring 604 is attached. A pin 605 is inserted into the pedestal 602 from the raised portion 606 'of the rotary plate 606 covered with the insertion pedestal 602 to allow the spring 604 to penetrate therethrough, and a screw 609 is projected on the back surface of the rotary plate 606. Reference numeral 610 is a disk fixed to the left side surface of the main frame 1, and the screw 609 is inserted into the central hole 612 and fixed to the main frame with a nut. The disk 610 is a semicircular arc and has a plurality of small holes 611. When opened, the pin portion 603 of the swing lever 601 which is acted by the spring 604 enters one place of the small hole 611. Further, a circular hole 608 (see FIG. 2) is opened at the lower end of the rotary table 606, and a connecting rod 615 is connected to this with a split pin 613, and the other end of the connecting rod 615 is attached to a slide frame 616 slidably fitted to the main frame 1. Connecting. The upper end of the slide frame 616 is pivotally attached to the bearing piece 701 protruding from the bottom pedestal 7 fixed below the side frame 4 by a pin 617, and the right side is also provided with the slide frame 616 and its pivoting mechanism.

FIG. 4 shows a seat width and seat depth adjusting mechanism. A side frame bottom pedestal 7 is fixed below a side frame 4, and a circular pipe end 702 of the side frame bottom pedestal 7 is provided in a circular pipe of a seat frame 2. After that, the bolt 801 is inserted into the circular pipe of the seat frame 2 via the ring 802. The circular tube 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 against the inner wall of the outer wall of the seat frame 2 which is in contact with the circular pipe, and the block 803 slides on the inclined surface of the circular pipe end 702 of the bottom pedestal 7. If 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 by the action of, the span between the side frames 4 can be adjusted and 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 9 to the appropriate seat depth. Similarly, the relevant position is fixed by the bolt 1001 and the block 1002. That is, when the bolt 1001 penetrates the circular pipe 901 of the seat front edge 9, the inclined surface of the block 1002 screwed onto the bolt 1001 matches the inclined surface of the front end of the circular pipe 901, and the adjusting mechanism 10 (FIG. 1) is formed. To do. The block 1002 is moved by rotating the bolt 1001 and the block 1002 and the circular pipe 901 are fixed to the inner wall of the circular pipe 201 of the seat frame 2.

FIG. 5 shows a handrail mechanism. A handrail plate 1101 is composed of a flat plate 1102 and a circular sleeve 1103, and a protruding block 1104 is provided on one side of the sleeve 1103. The handrail plate 1101 is a circular hole of the sleeve 1103. It fits into the front end head 1 106 of the sliding frame 1105. 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 a single projecting block 1109, in which the handrail plate 1101 is attached to the handrail frame 1105. When fitted to the front end head 1106, the protruding 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. The projecting block 1109 of the handrail frame 1105 is set at an angle outside the ring 1108, and the handrail plate 1101 turns backward approximately 120 degrees. After combining the bolt 1110 with the ring 1114, the sleeve 1103 of the handrail plate 110 1 and the handrail frame 1105 are further penetrated and screwed again with the block 111 1, and when the entire set is inserted into the back frame rotary shaft 5, the rotary shaft 5 is rotated. Both ends of are fitted into the sleeve 101 of the main frame 1. Further, 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 to adjust the bolt to a suitable width and tighten the bolt.

In FIGS. 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 into the circular pipe 1201. A spring 1211 is provided on the side frame, and the adjustment lever 1212 of the side frame is pushed backward. When the connecting action of the tube pin 1213 is adjusted, the side frame 4 connected to the adjustment lever 1212 is also pushed backward, and the circular pin 1201 is fixed by the fixing pin 1214. Is stopped in a hole 1215 at one end of the. First, when the side frame 4 is moved slightly forward and the fixing pin 1214 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.

[0012]

【effect】

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

[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 and 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 Back Frame 4 Side Frame 5 Rotation Shaft 6 Tilt Angle Adjusting Mechanism 7 Side Frame Bottom Pedestal 8 Seat Width Adjusting Mechanism 9 Chair Front Edge 10 Seat Depth Adjusting Mechanism 11 Handrail Mechanism 12 Side Frame Rotating Mechanism

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Bian Shun Ye Taiwan, Chun Tung Shin Ju Shen, Chun Shin Road, Section 4, No. 195, (72) Inventor Wu Yu Wei Taiwan, Chu Tsun Shin Chu She N, Chun Sing Road, Section 4, Number 195, (72) Inventor Bees Taiwan, Chun Sing Sing Chu Sheng, Chun Sing Road, Section 4, Number 195, (72) Inventor Ling Yun Wu Taiwan, Chun Tong Shin Chu Shen, Chun Shin Lord, 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 chairs for wheelchairs 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.