CN202366041U

CN202366041U - Foot supporting plate stretching and retreating wheelchair

Info

Publication number: CN202366041U
Application number: CN2011204351121U
Authority: CN
Inventors: 陈戈平
Original assignee: GUILIN IRIC ELECTRIC CONTROL INTELLIGENT VEHICLE INDUSTRY MANUFACTURING CO LTD
Current assignee: GUILIN IRIC ELECTRIC CONTROL INTELLIGENT VEHICLE INDUSTRY MANUFACTURING CO LTD
Priority date: 2011-11-05
Filing date: 2011-11-05
Publication date: 2012-08-08
Anticipated expiration: 2021-11-05

Abstract

The utility model discloses a foot supporting plate stretching and retreating wheelchair, which comprises a foot supporting plate, a pedal support and a wheelchair frame. The upper end of the pedal support is hinged with the wheelchair frame, the foot supporting plate is hinged with the lower end of the pedal support through a horizontal rotating shaft, a foot supporting stretching and retreating mechanism formed by a swing arm and a connection rod is arranged between the foot supporting plate and the wheelchair frame, one end of the swing arm is fixedly connected with a foot supporting plate, the other end of the swing arm is hinged with the lower end of the connection rod between the pedal support and the wheelchair frame, the upper end of the connection rod is hinged with the wheelchair frame, and the hinge point of the connection rod and the wheelchair frame is lower than the hinge point of the pedal support and the wheelchair frame. The foot supporting plate stretching and retreating wheelchair enables the foot supporting plate to be vary with position of the pedal support so as to change the angle between the foot supporting plate and the pedal support through the foot support stretching retreating mechanism, is capable of enabling the pedal supporting plate and the seat cushion to keep in parallel all the time, is more humanized in design, enables users to feel more comfortable in riding, and is capable of meeting requirements of the disabled for trip to the largest extent.

Description

Foot hold stretches inflection wheel Wheel-chair

(1) technical field:

This utility model relates to the wheel Wheel-chair, and particularly a kind of foot hold stretches inflection wheel Wheel-chair.

(2) background technology:

The foot hold of wheel Wheel-chair is the critical component in the wheel Wheel-chair overall structure.The unsound personage of lower limb function adjusts foot hold to the righttest easy angle of human body shank as required in the process of using the wheel Wheel-chair, the wheel Wheel-chair that particularly has the function of lying low seems even more important.

The conventionally multi-functional Wheel-chair of taking turns, under normal sitting posture condition, foot holder support and seat cushion are 90 ° of angles, and foot hold then is in level basically and promptly is parastate with seat cushion, and seat cushion and foot hold plumb line parallel distance are about 450mm.

The multi-functional Wheel-chair function that lies low of taking turns promptly is that backrest and foot hold can carry out angle adjustment.Because the rotation of foot hold carriage is regulated fulcrum right seat cushion bottom is set; From the angle of ergonomics, the motion of large and small lower limb ulnar joint has certain footpath poor, and human body needs the certain space of maintenance between Calf muscle and the seat cushion front side when being in the flat seat attitude simultaneously; If when being transferred to the lying status parallel to foot hold support angle like this with seat cushion; Because foot holder support pivot point and seat cushion plane originally just exist the discrepancy in elevation of about a 30～50mm, make progress turn and seat cushion level when lying the body position at foot holder support so, to be that the axle center just has the footpath of 30～50mm poor owing to foot hold support radius of turn and front side, seat cushion plane theory turning point; It is not enough with regard to length originally when therefore its foot holder support keeps flat; Add that foot hold is the L shape, and limited the stretching, extension of shank that human body can only be bent foot and lain, or moves to the backrest direction and to keep normal lying posture; The thing that this attains no degree of difficulty concerning the normal person, but just difficult concerning the user of those healths inconveniences.

(3) utility model content:

This utility model provides a kind of foot hold to stretch the wheel Wheel-chair with inflection with the adjusting of foot holder support.

Said foot hold stretches inflection wheel Wheel-chair; Comprise foot hold, pedal support and vehicle frame; Upper end of (during the sitting posture position) said pedal support and vehicle frame hinge dress; Different is, and said foot hold is hinged through the lower end of horizontal rotating shaft with pedal support, is provided with between said foot hold and the vehicle frame to make foot hold stretch the foot holder stretching, extension inflection mechanism with inflection with the pedal support position change.

Said pedal support position is between sitting posture with between lying low; To bed flat position, foot hold transforms to extended position from the inflection position pedal support from the sitting posture position adjustments, otherwise; Pedal support is adjusted back the sitting posture position from bed flat position, and foot hold then is repositioned to the inflection position from extended position.

A kind of structure that inflection mechanism is stretched in said foot holder comprises swing arm and connecting rod; One end and the foot hold of said swing arm are connected; The other end of swing arm is hinged with the lower end of connecting rod between pedal support (pedal support in the sitting posture position time) and vehicle frame; The upper end of connecting rod and vehicle frame are hinged, and the hinge point of said connecting rod and vehicle frame is lower than the hinge point of pedal support and vehicle frame.

Said pedal support, swing arm and connecting rod constitute a linkage; Said foot hold and swing arm constitute a lever construction; The fulcrum of lever is the hinge point of foot hold and pedal support, and the drive end of lever is the hinge point of swing arm and connecting rod, and foot hold then is the driven end of lever.

A kind of connected mode of said swing arm and foot hold: the nose of swing arm and horizontal rotating shaft is connected, and horizontal rotating shaft and foot hold are connected.

Sitting posture position and bed flat position to pedal support localized position-limit mechanism be located between foot hold and the pedal support.

A kind of simple structure of said position-limit mechanism comprises spacing arc groove and with spacing arc groove two ends the block of barrier effect takes place.

Said spacing arc groove is opened in the swing arm, and said block is located on the pedal support.

The advantage of this utility model:

This utility model foot hold stretches inflection wheel Wheel-chair and stretches inflection mechanism through the foot holder; Make foot hold can follow the trail of the change in location of pedal support and change and pedal support between angle; All the time can let foot hold and seat cushion keeping parallelism, keep reasonably taking placement of foot between foot hold and the pedal support.This utility model design has more hommization than traditional design, makes that to take the wheel Wheel-chair more comfortable, at utmost satisfies individuals with disabilities's travel requirement.

(4) description of drawings:

Fig. 1 is the perspective view of a kind of embodiment of this utility model.

Fig. 2 is that A in Fig. 1 embodiment is to view.

Fig. 3 is that B in Fig. 1 embodiment is to view.

Fig. 4 be among Fig. 2 foot hold from the sketch map of inflection evolution to extended position.

Fig. 5 be among Fig. 3 foot hold from the sketch map of inflection evolution to extended position.

Figure number sign: 1, foot hold; 2, pedal support; 3, vehicle frame; 4, swing arm; 5, connecting rod; 6, horizontal rotating shaft; 7, block; 8, oil cylinder.

(5) specific embodiment:

Be described further below in conjunction with the technical scheme of accompanying drawing this utility model:

This utility model foot hold stretches inflection wheelchair car owner and will be made up of vehicle frame 3, pedal support 2 and foot hold 1; The upper end of pedal support 2 (being in vertical sitting posture position to foot hold 1) hinge is in vehicle frame 3 front end face tops; Be mounted with oil cylinder 8 in the vehicle frame 3; The support body hinge dress of oblique top, the piston rod end of oil cylinder 8 and pedal support 2; The outstanding buttocks of foot hold 1 rear end and the lower end of pedal support 2 are through horizontal rotating shaft 6 hinges, and wherein foot hold 1 is fixedly connected with horizontal rotating shaft 6, as previously mentioned in the sitting posture position of pedal support 2; Foot hold 1 is horizontal to be that seat cushion is parallel and form the angle of about 90 degree with pedal support 2 with vehicle frame 3 end faces, like Fig. 1, Fig. 2, shown in Figure 3.

Be provided with the foot holder that constitutes by swing arm 4 and connecting rod 5 between said foot hold 1 and the vehicle frame 3 and stretch inflection mechanism; When pedal support 2 is in the sitting posture position; Said connecting rod 5 is arranged between pedal support 2 and the vehicle frame 3, and said swing arm 4 is downward bending shape backward, upper end pin-and-hole and coaxial being connected of nose of stretching the horizontal rotating shaft 6 outside foot hold 1 before the swing arm 4; Swing arm 4 posterior ends are the lower end hinge with connecting rod 5 in pedal support 2 backs; The upper end of connecting rod 5 and vehicle frame 3 end face hinges, the hinge point of connecting rod 5 and vehicle frame 3 are in a straight line with the hinge point of pedal support 2 and vehicle frame 3 and are lower than the hinge point of pedal support 2 and vehicle frame 3, and are as shown in Figure 3.

As stated, pedal support 2, swing arm 4 and connecting rod 5 constitute a linkage, and swing arm 4 is that a lever is whole with foot hold 1.Pedal support 2 from sitting posture position (upright position) when bed flat position (horizontal level) is regulated, the piston rod of oil cylinder 8 is released forward, pedal support 2 upwards rotates; Connecting rod 5 is followed rotation; Connecting rod 5 is held swing arm 4 to the back upper place swing, and foot hold 1 then stretches swing to the front lower place, and this moment, foot hold 1 also rotated to the front upper place with pedal support 2; Design the relative dimensions of linkage and leverage; Can be so that two rotation directions be cancelled out each other, promptly to keep with vehicle frame 3 end faces basically be the parallel position of seat cushion to foot hold 1, like Fig. 4, shown in Figure 5.

Adjust back the sitting posture position when (vertically) at pedal support 2 from bed flat position (horizontal level), the piston rod of oil cylinder 8 bounces back backward, and pedal support 2 rotates; Connecting rod 5 is followed rotation; Connecting rod 5 promotes swing arm 4 to the front lower place swing, and foot hold 1 is then to back upper place inflection swing, and this moment, foot hold 1 also rotated to the back lower place with pedal support 2; As previously mentioned under the situation of the relative dimensions that designs linkage and leverage; Two rotation directions are cancelled out each other, and promptly to keep with vehicle frame 3 end faces basically be the parallel position of seat cushion to foot hold 1, like Fig. 2, shown in Figure 3.

Said pedal support 2 is controlled by position-limit mechanism in the location of bed flat position (horizontal level) and sitting posture position (upright position); Said position-limit mechanism is spacing arc groove and the block 7 that cooperatively interacts; Be opened in the swing arm 4 with horizontal rotating shaft 6 concentric spacing arc grooves; Block 7 fixedly is located on the pedal support 2, and the effect of keeping out that spacing side, arc groove two ends and block 7 are mutual can be carried out spacing to bed flat position (horizontal level) and sitting posture position (upright position); Avoid causing damage, like Fig. 3, Fig. 4, shown in Figure 5 to leverage and linkage because of the position motion of crossing of oil cylinder 8 piston rods.

Claims

1. foot hold stretches inflection wheel Wheel-chair; Comprise foot hold (1), pedal support (2) and vehicle frame (3); The upper end of said pedal support (2) and vehicle frame (3) hinge dress; It is characterized in that: said foot hold (1) is hinged through the lower end of horizontal rotating shaft (6) and pedal support (2), is provided with between said foot hold (1) and the vehicle frame (3) to make foot hold (1) stretch the foot holder stretching, extension inflection mechanism with inflection with pedal support (2) position change.

2. foot hold according to claim 1 stretches inflection wheel Wheel-chair; It is characterized in that: said foot holder is stretched inflection mechanism and is comprised swing arm (4) and connecting rod (5); One end of said swing arm (4) and foot hold (1) are connected; The other end of swing arm (4) between pedal support (2) and vehicle frame (3) and the lower end of connecting rod (5) be hinged; The upper end of connecting rod (5) and vehicle frame (3) are hinged, and the hinge point of said connecting rod (5) and vehicle frame (3) is lower than the hinge point of pedal support (2) and vehicle frame.

3. foot hold according to claim 2 is with stretching inflection wheel Wheel-chair, and it is characterized in that: said swing arm (4) is connected with the nose of horizontal rotating shaft (6), and horizontal rotating shaft (6) is connected with foot hold (1).

4. stretch inflection wheel Wheel-chair according to any described foot hold in the claim 1～3, it is characterized in that: be provided with between said foot hold (1) and the pedal support (2) in sitting posture position and bed flat position the localized position-limit mechanism of pedal support (2).

5. foot hold according to claim 4 stretches inflection wheel Wheel-chair, it is characterized in that: said position-limit mechanism comprises spacing arc groove and with spacing arc groove two ends the block (7) of barrier effect takes place.

6. foot hold according to claim 5 stretches inflection wheel Wheel-chair, and it is characterized in that: said spacing arc groove is opened in the swing arm (4), and said block (7) is located on the pedal support (2).