CN202952914U

CN202952914U - Getting-on/off device for wheelchair

Info

Publication number: CN202952914U
Application number: CN 201220729526
Authority: CN
Inventors: 张顺心; 孙春福; 史学政; 杨鹏; 卞学良; 崔少杰; 张营章; 张雪辉
Original assignee: Hebei University of Technology
Current assignee: Hebei University of Technology
Priority date: 2012-12-24
Filing date: 2012-12-24
Publication date: 2013-05-29
Anticipated expiration: 2022-12-24

Abstract

The utility model discloses a getting-on/off device for a wheelchair. The device is characterized by mainly comprising a moving platform, a suspended platform rack, a slide-block guide branch chain, a first middle branch chain, a second middle branch chain, a wheelchair locating-fastening device, a slide block, a rack and an electric push rod, wherein the overall structural layout of the device is as follows: the slide block is connected with the rack by the slide-block guide branch chain; the suspended platform rack is connected with the slide block by the first middle branch chain and the second middle branch chain in a symmetry manner; the moving platform is connected with the suspended platform rack by a moving platform guide branch chain; the wheelchair locating-fastening device is installed on the moving platform, and is used for being connected with the electrically-powered wheelchair, and the electric push rod is connected between the suspended platform rack and the slide block; and the first middle branch chain and the second middle branch chain are same in structure and form a double-parallelogram mechanism. The movement of the suspended platform rack refers to a translation process and always keeps a horizontal state in case of ensuring the horizontal state of the slide block; and simultaneously, two parallelograms are used cooperatively, so that the stability of the horizontal movement of the moving platform is ensured as well.

Description

Wheelchair getting on and off device

Technical Field

The utility model relates to a disabled person's trip appurtenance specifically is a wheelchair device of getting on or off bus. The device can well solve the problem that a person with lower limb disability can independently go up and down from a wheelchair to a special vehicle for the person with lower limb disability when going out outdoors.

Technical Field

According to a main data bulletin issued by the second national disabled people sampling survey in 2006, the total number of various disabled people in China is 8296 thousands of people, and the proportion of the disabled people in the total population in China is 6.34%. The number of the people with the disabled limbs is 2412 thousands of people, and the proportion of the people with the disabled limbs accounts for 29.07 percent of the total number of the people with the disabled limbs. In addition, data published by the national committee for old age in the country show that the population of the aged 60 years and above reaches 1.85 hundred million people and accounts for 13.7 percent of the total population by the end of 2011. By the end of 2013, the population of the aged people in China is expected to exceed 2 hundred million, by 2025, the population of the aged people is expected to exceed 3 hundred million, and by 2033, the population of the aged people is expected to exceed 4 hundred million. One of the major obstacles of lower limb handicapped and elderly persons is the reduced ability to travel outdoors, and even more likely to be unable to walk.

Travel tools designed for the disabled lower limbs and the elderly, such as wheelchairs, cars for the disabled, ramp type wheelchair hand-propelled lifts, and converted disabled vehicles, have appeared on the market. However, the wheelchair is suitable for short distance and long distance, but the wheelchair still needs the assistance of normal people when the disabled people get on or off the vehicle, and the disabled people can only relieve the difficulty to a certain extent and have a long distance to meet the requirements of the disabled people. In order to solve the problem of automatic getting on and off of the vehicle by the wheelchair, a device for going out and riding the vehicle, which can fully adapt to the self condition of the disabled, must be developed and designed so as to facilitate outdoor going out of the disabled with lower limbs in the wheelchair.

In the scope of the applicant's search, no documents closely related to the wheelchair getting on and off device of the present invention have been found.

SUMMERY OF THE UTILITY MODEL

The technical problem that the prior art is not enough, the utility model aims to solve is to provide a wheelchair getting on and off device, and the device belongs to the supporting articles for use of low limbs handicapped person special-purpose vehicle, can make low limbs handicapped person under the assistance that does not have other people, both can easily accomplish by oneself getting on and off by electronic wheelchair, can guarantee again that low limbs handicapped person and electronic wheelchair do not separate to have simple structure, safe and reliable, it is convenient to maintain, low in manufacturing cost, advantages such as application range is wide.

The utility model provides a technical scheme is: the design is a wheelchair getting on or off device, and its characterized in that the device mainly includes moves the platform, hangs the rack, slider direction branch chain, first middle branch chain, second middle branch chain, wheelchair location fastener, slider, frame and electric putter, and its overall structure overall arrangement is: the wheelchair positioning and fastening device is arranged on the movable platform and used for being connected with an electric wheelchair, and an electric push rod is connected between the suspension rack and the slide block;

the slide block guiding branch chain consists of a supporting seat, a shaft shoulder, a threaded sleeve, a transverse lead screw, a suspension, a right motor, a right speed reducer, a bearing and a transverse guiding track, wherein the threaded sleeve is fixedly connected with the slide block;

the first middle branched chain and the second middle branched chain have the same structure and respectively comprise an upper connecting arm and a lower connecting arm which have the same structure, the upper connecting arm and the lower connecting arm, the suspension rack and the sliding block form a parallelogram mechanism, and the two parallelogram mechanisms have the same structure and form a double-parallelogram mechanism; the electric push rods are arranged between the two symmetrical parallelogram mechanisms in parallel;

the movable platform guiding branch chain consists of a left motor, a left speed reducer, a longitudinal screw rod, a threaded hole and a longitudinal guiding track, the threaded hole is fixedly connected with the sliding block, one end of the longitudinal screw rod is connected with the left speed reducer, the other end of the longitudinal screw rod is directly connected with the threaded hole, the longitudinal screw rod is connected with the left speed reducer in a matched mode through a bearing capable of bearing axial force, and the left motor is connected with the suspension rack and the left speed reducer is connected with the suspension rack through pins; the movable platform guide branch chain is driven by a left motor fixed on the suspension rack, and a longitudinal guide rail is arranged between the movable platform and the suspension rack;

the wheelchair positioning and fastening device consists of armrests, a positioning baffle, a wheelchair guide groove, a front side boss, a front side positioning pin, a control handle, a rear side positioning pin and a rear side boss; two wheelchair guide grooves are arranged on the movable platform, the width between the wheelchair guide grooves is equal to the width between the electric wheelchair tires, and the positioning baffle is arranged on the end surface of the guide grooves, so that a front side positioning pin on the front side boss and a rear side positioning pin on the rear side boss can just enter corresponding positioning holes on the electric wheelchair; the two front side bosses and the two rear side bosses are respectively and symmetrically arranged at two sides of the movable platform, wherein the distance between the two rear side bosses is greater than the distance between the two front side bosses; the control handle is arranged on the movable platform and is connected with the front side positioning pin and the rear side positioning pin.

Compared with the prior art, the utility model discloses the device of getting on or off the bus of wheelchair adopts two parallelogram mechanisms, and the advantage that has is, under the circumstances of guaranteeing the slider horizontally, and angular displacement, angular velocity and the angular acceleration of four linking arms are the same all the time the direction, and the size equals. The track of any point on the connecting rod is a circle, the radius of the circle is equal to the length of the connecting arms, the four connecting arms cannot interfere in the movement process, and the movement of the suspension rack is a translation process and always keeps a horizontal state. Meanwhile, the two parallelograms are used in a matched mode, the suspension rack cannot turn over in the moving process, and the stability of the horizontal movement of the movable platform is guaranteed. The utility model discloses a device of getting on or off the wheelchair can make low limbs disability person under the assistance that does not have other people, both can make low limbs disability person easily accomplish on or off the bus by oneself, can guarantee again that low limbs disability person does not separate with electronic wheelchair. All operations are independently completed by the user without the help of other people, and the user does not need to leave the electric wheelchair. The utility model discloses get on or off bus device has following advantage: 1. and (4) automatic operation. When the lower limb handicapped person parks the electric wheelchair on the movable platform, the getting-on and getting-off device can automatically send the electric wheelchair to the designated position, the difficulty of getting-on and getting-off is eliminated, and the problem of obstacles when the electric wheelchair independently goes outdoors is thoroughly solved. 2. Is safe, stable and reliable. Because the device of getting on or off the bus acts gently, stability is good, has automatic locking function, can prevent effectively that the device of getting on or off the bus from gliding after the unexpected outage, and the security is high, and the lower limbs handicapped person can not produce the sense of fear in the use. 3. No pollution. The driving of the getting-on and getting-off devices is electrically driven, so that the pollution to the external environment is avoided. 4. The device has the advantages of simple structure, safety, reliability, convenient maintenance, low manufacturing cost, wide application range and the like.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of the wheelchair getting on and off device of the present invention;

FIG. 2 is a schematic top view of a movable platform of an embodiment of the wheelchair getting on and off device of the present invention at the lowest end;

FIG. 3 is a schematic view of a partial structure of a lateral guiding branch chain of a slider according to an embodiment of the wheelchair device of the present invention;

FIG. 4 is a schematic view of a partial structure of a double parallelogram mechanism of an embodiment of the wheelchair getting on and off device of the present invention;

FIG. 5 is a schematic view of a partial structure of a movable platform of an embodiment of the wheelchair getting on and off device of the present invention;

FIG. 6 is a schematic structural view of another embodiment of the wheelchair getting on and off device of the present invention;

FIG. 7 is a schematic structural view showing three positions of a movable platform of an embodiment of the wheelchair getting on and off device of the present invention during movement; wherein,

FIG. 7a is a schematic structural view of a movable platform of an embodiment of the wheelchair getting on and off device of the present invention in a front view state at the lowest end;

FIG. 7b is a schematic structural view of a front view state when the movable platform of the wheelchair getting on and off the vehicle rises to the same height as the chassis of the vehicle according to the embodiment of the present invention;

fig. 7c is a schematic structural view of the movable platform of the wheelchair getting on and off device of the present invention moving to the position of the cockpit in a front view.

Detailed Description

The present invention will be further described with reference to the following embodiments and the accompanying drawings.

The utility model relates to a device (refer to for short the device, see fig. 1-7) of getting on or off wheelchair of wheelchair is applicable to the special-purpose vehicle use about the disabled wheelchair of low limbs, and its characterized in that the device is including moving platform 1, hanging rack 2, slider direction branch chain 3, branch chain 5 in the middle of first middle branch chain 4, the second, moving platform direction branch chain 6, wheelchair location fastener 7, slider 8, frame 9 and electric putter 10.

The overall structure layout is as follows: the wheelchair is characterized in that a sliding block 8 is connected with a rack 9 through a sliding block guide branched chain 3, a suspension rack 2 is symmetrically connected with the sliding block 8 through a first middle branched chain 4 and a second middle branched chain 5, the movable platform 1 is connected with the suspension rack 2 through a movable platform guide branched chain 6, a wheelchair positioning and fastening device 7 is installed on the movable platform 1 and used for being connected with an electric wheelchair, and an electric push rod 10 is connected between the suspension rack 2 and the sliding block 8.

The slide block guiding branched chain 3 is composed of a supporting seat 31, a shaft shoulder 32, a threaded sleeve 33, a transverse lead screw 34, a suspension 35, a right motor 36, a right speed reducer 37, a bearing 38 and a transverse guiding track 39, the threaded sleeve 33 is fixedly connected with the slide block 8, two ends of the transverse lead screw 34 are installed on the rack 9 and the supporting seat 31, the transverse lead screw 34 is matched and connected with the supporting seat 31 and the transverse lead screw 34 is connected with the rack 9 through the bearing 38 capable of bearing axial force, the suspension 35 is fixedly connected with the rack 9, the right motor 36 is connected with the suspension 35, the right speed reducer 37 is connected with the suspension 35, and the supporting seat 31 is connected with the rack 9 through pins (see fig. 3). The slide block guiding branched chain 3 is driven by a right motor 36 fixed on a suspension 35, and a transverse lead screw 34 is driven to rotate by the right motor 36 by utilizing a lead screw transmission principle, so that the slide block 8 transversely and horizontally moves on the rack 9, and meanwhile, a transverse guiding track 39 is arranged between the slide block 8 and the rack 9, and the slide block 8 is prevented from swinging in the horizontal direction when moving on the rack 9.

The first middle branched chain 4 and the second middle branched chain 5 have the same structure and respectively comprise an upper connecting arm and a lower connecting arm which have the same structure, namely the first middle branched chain 4 comprises an upper left connecting arm 41 and a lower left connecting arm 42, the second middle branched chain 5 comprises an upper right connecting arm 51 and a lower right connecting arm 52, the upper left connecting arm 41 and the lower left connecting arm 42, the suspension frame 2 and the slide block 8 form a parallelogram mechanism, similarly, the upper right connecting arm 51 and the lower right connecting arm 52, the suspension frame 2 and the slide block 8 also form a parallelogram mechanism, and the two parallelogram mechanisms have the same structure and form a double-parallelogram mechanism; the electric push rod 10 is installed in parallel between two symmetrical parallelogram mechanisms (see fig. 4). The first middle branched chain 4 and the second middle branched chain 5 are driven by an electric push rod 10 fixed between the suspension rack 2 and the sliding block 8, and the suspension rack 2 is always in a horizontal state by utilizing the motion principle of a parallelogram mechanism under the condition of ensuring the horizontal state of the sliding block 8. The electric push rod 10 drives the four connecting arms to rotate by taking hinges connecting the connecting arms and the sliding block 8 as fulcrums, so that the suspension frame 2 moves up and down.

The movable platform guide branched chain 6 is composed of a left motor 61, a left speed reducer 62, a longitudinal lead screw 63, a threaded hole 64 and a longitudinal guide rail 65, the threaded hole 64 is fixedly connected with the movable platform 1, one end of the longitudinal lead screw 63 is connected with the left speed reducer 62, the other end of the longitudinal lead screw is directly connected with the threaded hole 64, the longitudinal lead screw 63 is connected with the left speed reducer 62 in a matching mode through a bearing capable of bearing axial force, and the left motor 61 is connected with the suspension rack 2 and the left speed reducer 62 is connected with the suspension rack 2 through pins (see fig. 5). The movable platform guide branch chain 6 is driven by a left motor 61 fixed on the suspension rack 2, and a longitudinal screw 63 is driven to rotate by the left motor 61 according to a screw transmission principle, so that the movable platform 1 can longitudinally move horizontally on the suspension rack 2, namely, the front and back positions of a driver seat are adjusted, a longitudinal guide track 65 is arranged between the movable platform 1 and the suspension rack 2, and the movable platform 1 is prevented from swinging in the horizontal direction when moving on the suspension rack 2.

The wheelchair positioning and fastening device 7 consists of an armrest 71, a positioning baffle 72, a wheelchair guide groove 73, a front boss 74, a front positioning pin 75, a control handle 76, a rear positioning pin 77 and a rear boss 78. Two wheelchair guide grooves 73 are provided on the movable platform 1, and the width between the two wheelchair guide grooves is equal to the width between the tires of the electric wheelchair of the auxiliary equipment (which can be matched) of the present design, thereby defining the traveling path of the electric wheelchair on the movable platform 1. When the electric wheelchair is driven to the movable platform 1, a person with lower limb obstruction grasps the handrail 71 to assist the electric wheelchair to enter the wheelchair guide groove 73, the positioning baffle plate 72 controls the position of the electric wheelchair at the forefront moving on the movable platform 1, when the front wheel of the electric wheelchair contacts with the positioning baffle plate 72, the electric wheelchair is at the forefront, and at the moment, the front positioning pin 75 on the front side boss 74 and the rear positioning pin 77 on the rear side boss 78 just enter the corresponding positioning hole on the electric wheelchair. The two front bosses 74 and the two rear bosses 78 are respectively and symmetrically arranged on two sides of the movable platform 1, wherein the distance between the two rear bosses 74 is greater than the distance between the two front bosses 77 (see fig. 5), so that the front positioning pin 75 is prevented from entering a positioning hole on the rear side of the electric wheelchair when the electric wheelchair enters the movable platform 1. The control handle 76 is a device for controlling the connection relationship between the movable platform 1 and the electric wheelchair, is arranged on the movable platform 1, is connected with the front and rear positioning pins 75 and 77, is pulled forwards, the front positioning pin 75 enters the front boss 74, and the rear positioning pin 77 enters the rear boss 78, so that the electric wheelchair is separated from the movable platform 1; the control handle 76 is pulled backwards to clamp the front side positioning pin 75 and the rear side positioning pin 77, so that the electric wheelchair is fixed with the movable platform 1. The wheelchair positioning and fastening device 7 can ensure that the electric wheelchair and the movable platform 1 are always in a fixed connection state in the movement process.

The utility model discloses get on the bus device is three degree of freedom series connection mechanisms. The movement in three directions includes: the slide block 8 moves horizontally in the transverse direction on the frame 9; the suspension frame 2 moves up and down; the movable platform 1 moves longitudinally and horizontally on the suspension bracket 2. Wherein, the power of the transverse horizontal movement of the sliding block 8 on the frame 9 is provided by a right motor 36, the up-and-down movement of the suspension bracket 2 is provided by an electric push rod 10, and the power of the longitudinal movement of the movable platform 1 on the suspension bracket 2 is provided by a left motor 61. The mechanism is characterized in that the mechanism can finally realize the stable motion of the movable platform 1 in the transverse direction, the longitudinal direction and the up-down direction, and the mechanism is electrically driven and has no pollution to the external environment.

The utility model discloses another kind of embodiment structure of device is: the slide guide branch 3 is replaced by a right electric push rod 12 (see fig. 6) mounted between the slide 8 and the frame 9.

The utility model discloses get on or off bus device theory of operation and operation process as follows: assuming that the initial position is such that the special vehicle and the electric wheelchair are both parked on the road surface, the getting-on/off device is inside the special vehicle (see fig. 7 c). A person with lower limb disability moves the electric wheelchair to the side door position of a special vehicle, operates a remote controller, opens a vehicle door, starts a right motor 36, drives a transverse lead screw 34 to rotate, converts the rotation of the transverse lead screw 34 into the leftward horizontal movement of a slide block 8 along a transverse guide rail 39 through a slide block guide branched chain 3, stops moving when the slide block 8 moves to the position of a left side support seat 31 (see figure 7 b), then drives the suspension frame 2 to move downwards through a first middle branched chain 4, a second middle branched chain 5 and an electric push rod 10, and stops moving when the suspension frame 2 moves to the position that the lower surface of the suspension frame contacts with the ground (see figure 7 a), and the device finishes getting-off movement; a person with lower limb disability sits on the electric wheelchair, grasps the handrail 71, aligns the tire of the electric wheelchair with the wheelchair guide groove 73 on the movable platform 1 through the slope 66, and enables the electric wheelchair to realize directional movement on the movable platform 1; when the foremost end of the electric wheelchair is contacted with the positioning baffle plate 72, the electric wheelchair stops moving, and at the moment, a front side positioning pin 75 on the front side boss 74 and a rear side positioning pin 77 on the rear side boss 78 enter a positioning hole on the corresponding electric wheelchair, and the control handle 76 is clamped when being pulled backwards to the lowest position, so that the electric wheelchair is fixed with the movable platform 1; the suspension frame 2 moves upwards through the first middle branch chain 4, the second middle branch chain 5 and the electric push rod 10, and the suspension frame 2 stops moving upwards when the lower surface of the suspension frame is at the same level with the upper surface of the frame 9 (see fig. 7 b). Then, a right motor 36 is started, the rotation of the transverse lead screw 34 is converted into the rightward horizontal movement of the slide block 8 along a transverse guide track 39 through the slide block guide branched chain 3, the suspension frame 2 stops moving when moving to the position of the cab (see fig. 7 c), and the mechanism realizes the boarding movement; the vehicle door is closed, then the left motor 61 is started, and the rotation of the longitudinal screw 63 is converted into the longitudinal horizontal movement of the movable platform 1 along the longitudinal guide track 65 through the movable platform guide branched chain 6, so that the front and back position adjustment of the driver seat (namely the electric wheelchair) is realized. After the adjustment is finished, the person with lower limb disability can drive the automobile by himself to go out for a long distance outdoors. When the destination is reached, the lower limb handicapped person can repeat the process, so that the lower limb handicapped person can finish getting off the vehicle and the mechanism is reset. When the electric wheelchair is separated from the special vehicle, the person with lower limb disability can freely move in a short distance.

The utility model discloses the device of getting on or off the bus of wheelchair is installed in driver's seat and copilot seat position, and low limbs handicapped person sits on electronic wheelchair, through operation remote controller, can accomplish the up-and-down motion of hanging the rack, hang the horizontal motion of rack and move the vertical horizontal motion of platform, makes things convenient for electronic wheelchair to get into the special-purpose vehicle by the side door and carries out electronic wheelchair front and back position adjustment, realizes the independent upper and lower special-purpose vehicle of low limbs obstacle person.

It should be noted that the installation terms of the components such as "upper, lower", "front, rear", "left, right" and the like in the device of the present invention are shown in the drawings, and are only relative or only for convenience of description, and do not represent the uniqueness and the necessity of the installation position. The embodiment of the device of the utility model can be properly adjusted and changed in non-essential ways completely according to the needs.

The utility model discloses the nothing is mentioned the part and is applicable to prior art.

Claims

1. The utility model provides a wheelchair device of getting on or off bus, its characterized in that the device mainly includes moves the platform, hangs the rack, slider direction branch chain, first middle branch chain, second middle branch chain, wheelchair location fastener, slider, frame and electric putter, and its overall structure overall arrangement is: the wheelchair positioning and fastening device is arranged on the movable platform and used for being connected with an electric wheelchair, and an electric push rod is connected between the suspension rack and the slide block;