Stair-climbing double-track wheelchair

Abstract

The utility model discloses a stair-climbing double-track wheelchair which comprises a stair-climbing assembly which is fixedly installed at the bottom of a seat of a wheelchair body and used for the stair-climbing function of the wheelchair body. The stair climbing assembly comprises two first crawlers, two second crawlers, two rotation driving mechanisms and three telescopic driving mechanisms, the two first crawlers are horizontally arranged at the bottom of the wheelchair body side by side at intervals, and the two second crawlers are obliquely arranged at the rear ends of the two first crawlers side by side at intervals; a connecting pipe is arranged between the tops of the two second crawler belts, and the telescopic driving mechanism is movably installed on the connecting pipe. According to the stair-climbing double-track wheelchair, the installation positions of the double tracks on the stair-climbing assembly are changed into bottom arrangement from original back arrangement, the stair-climbing mode of the wheelchair body is changed, original personnel assistance is replaced, the stair-climbing mode is controlled by a wheelchair user himself / herself, and the practicability of the stair-climbing double-track wheelchair is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wheelchair technical field, concretely relates to a double-track wheelchair for climbing stairs. BACKGROUND

[0002] Now, the proportion of aging population in our country accounts for the total population more and more big, they lose part action ability, but also have the demand of going out, therefore, the wheelchair market prospect is broad. Ordinary wheelchair can only be used as a walking aid on flat ground, for the resident building without elevator, going upstairs and downstairs is difficult to reach the sky, which brings many inconveniences to wheelchair users, and affects their normal independent life.

[0003] The prior art Chinese patent 201910129779.X discloses a double-track adaptive stair-climbing electric wheelchair, which is provided with a double-track stair-climbing component at the bottom of the wheelchair body. This kind of back setting needs another person to help tilt from behind, so that the stair-climbing function of the wheelchair can be used. The prior art does not provide a double-track stair-climbing component at the bottom of the wheelchair, so that the stair-climbing component can perform stair-climbing behavior without the assistance of personnel. Moreover, the existing stair-climbing component cannot adjust the angle of the stair-climbing track according to the inclination between the two steps on the stairway, so that the wheelchair can be used on stairways with different inclinations. SUMMARY

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a double-track wheelchair for climbing stairs, which solves the technical problems of the prior art. The prior art provides a double-track stair-climbing component at the back of the wheelchair, which requires another person to help tilt from behind, so that the stair-climbing function of the wheelchair can be used. The prior art does not provide a double-track stair-climbing component at the bottom of the wheelchair, so that the stair-climbing component can perform stair-climbing behavior without the assistance of personnel. Moreover, the existing stair-climbing component cannot adjust the angle of the stair-climbing track according to the inclination between the two steps on the stairway, so that the wheelchair can be used on stairways with different inclinations.

[0005] According to the technical scheme provided by the embodiment of the present application, a double-track wheelchair for climbing stairs is provided, which includes a stair-climbing component fixedly installed at the bottom of the seat of the wheelchair body, and is used for the stair-climbing function of the wheelchair body.

[0006] The stair climbing assembly comprises two first tracks, two second tracks, two rotating driving mechanisms and three telescopic driving mechanisms, the two first tracks are horizontally arranged and spaced apart at the bottom of the wheelchair body, the two second tracks are obliquely arranged and spaced apart at the rear end of the two first tracks, a connecting pipe is arranged at the top of the two second tracks, and a telescopic driving mechanism is movably arranged on the connecting pipe, so that the telescopic driving mechanism drives the second track to move and adjusts the climbing angle of the second track, and a connecting pipe is arranged at the middle of the two ends of the two first tracks, and a corresponding telescopic driving mechanism is movably arranged on the connecting pipe, so that the telescopic driving mechanism drives the two first tracks to move along the vertical direction, and the height and angle of the first track are adjusted.

[0007] Further, the stair climbing assembly further comprises a plurality of first connecting plates and a plurality of second connecting plates, the plurality of first connecting plates are uniformly arranged on both sides of each first track, and each second connecting plate is arranged on both sides of each second track, and each first connecting plate is movably connected with each second connecting plate.

[0008] Further, the rotating driving members on the two rotating driving mechanisms are respectively arranged on the side surfaces of the first connecting plates and the second connecting plates, so that the rotating driving members are movably connected with the first tracks and the second tracks through rotating shafts, and the rotating driving members drive the first tracks and the second tracks to rotate.

[0009] Further, each telescopic driving mechanism is matched in structure, and the telescopic driving mechanism comprises a telescopic driving member and a telescopic rod, the bottom of the telescopic rod is connected with each connecting pipe, and the telescopic rod is fixedly connected with the output end of the telescopic driving member, so that the telescopic driving member drives the telescopic rod to adjust the telescopic adjustment.

[0010] Further, a controller is arranged on the top handrail of the wheelchair body, and the controller is electrically connected with the stair climbing assembly, so that the controller controls the start and stop of the stair climbing assembly.

[0011] In summary, the beneficial effects of the present application are:

[0012] I. By changing the installation position of the double tracks on the stair climbing assembly from the original back type to the bottom type, the climbing mode of the wheelchair body is changed, the original personnel assistance is replaced, the climbing mode is controlled by the wheelchair user himself, and the practicability of the double track climbing wheelchair is improved.

[0013] II. By setting the adjustable height and angle of the climbing assembly at the bottom of the wheelchair body, the second track is abutted with two steps of the stair, the climbing angle measurement is carried out, so that the several telescopic driving mechanisms on the climbing assembly adjust the height and angle of the two first tracks, so that the climbing double-track wheelchair can be applied to the stair with different inclination to climb the stair, and the climbing efficiency of the climbing double-track wheelchair is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, when read in conjunction with the accompanying drawings:

[0015] Figure 1 It is a front view of the overall structure of the utility model;

[0016] Figure 2 It is a rear view of the overall structure of the utility model;

[0017] Figure 3 It is a side view of the wheelchair in the climbing state of the utility model;

[0018] Figure 4 It is a structure schematic view of the climbing assembly of the utility model.

[0019] Reference signs in the drawings: climbing assembly-100, first track-110, second track-120, rotating driving mechanism-130, telescopic driving mechanism-140, telescopic driving member-141, telescopic rod-142, connecting pipe-150, first connecting plate-160, second connecting plate-170, wheelchair body-200, handrail-210, controller-220. DETAILED DESCRIPTION

[0020] The application will be further described in detail below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for convenience of description.

[0021] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict. The application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0022] A climbing double-track wheelchair, the structure is as Figures 1-4As shown, including the climbing component 100, which is fixedly installed on the wheelchair body 200 seat bottom, instead of the original back climbing component design, which needs personnel assistance to climb stairs, improve the practicality and convenience of the wheelchair body 200 climbing function; Climbing component 100, including two first track 110, two second track 120, two rotating drive mechanism 130 and three telescopic drive mechanism 140, two first track 110 horizontal parallel and interval setting in the wheelchair body 200 bottom, while two second track 120 oblique parallel and interval setting in the two first track 110 rear end, while the top of the two second track 120 is provided with a connecting pipe 150, the connecting pipe 150 is movably installed with a telescopic drive mechanism 140, so that the telescopic drive mechanism 140 drives the second track 120 to rotate along the center of its bottom, so as to adjust the climbing angle, while the connecting pipe 150 movably installed with the corresponding telescopic drive mechanism 140 in the middle of the two ends of the two first track 110, so that the telescopic drive mechanism 140 drives the two first track 110 to move along the vertical direction, the height and angle of the first track 120 is adjusted.

[0023] When the double track climbing wheelchair climbs the step ladder, the climbing component 100 installed at the bottom of the wheelchair body 200 is started under the control of the controller 220, so that the two second track 120 arranged at the rear end of the climbing component 100 are driven by the telescopic drive 141 to adjust the inclination angle, test the inclination angle of the step ladder to be climbed, and transmit the inclination angle to the controller 220 in time, so that the controller 220 controls the height and angle of the two first track 110 arranged horizontally at the bottom of the wheelchair body 200, so that the two first track 110 are driven by the telescopic drive mechanism 140 to adjust the support height and support angle, so that the climbing track wheelchair is suitable for step ladders with different inclination.

[0024] As a preferred embodiment, please refer to Figure 2 and Figure 4 The climbing component 100 further comprises a plurality of first connecting plates 160 and a plurality of second connecting plates 170, the plurality of first connecting plates 160 are uniformly installed on both sides of each first track 110, and each second connecting plate 170 is installed on both sides of each second track 120, and each first connecting plate 160 is movably connected with each second connecting plate 170, so that each first connecting plate 160 and each second connecting plate 170 protect the outside of each first track 110 and each second track 120.

[0025] As a preferred embodiment, please refer to Figure 2 and Figure 4, the rotating driving members on the two rotating driving mechanisms 130 are respectively installed on the sides of the first connecting plate 160 and the second connecting plate 170, so that the rotating driving members are movably connected with the first track 110 and the second track 120 through rotating shafts, so that the rotating driving mechanism 130 drives the first track 110 and the second track 120 to rotate, so that the first track 110 and the second track 120 move along the inclination angle of the step ladder, and drive the wheelchair body 200 to climb the stairs.

[0026] As a preferred embodiment, refer to Figure 3 and Figure 4 , each telescopic driving mechanism 140 is matched in structure, and the telescopic driving mechanism 140 comprises a telescopic driving member 141 and a telescopic rod 142, the bottom of the telescopic rod 142 is connected with each connecting pipe 150, and the telescopic rod 142 is fixedly connected with the output end of the telescopic driving member 141, so that the telescopic driving member 141 drives the telescopic rod 142 to adjust the telescopic movement, thereby driving the first track 110 and the second track 120 connected on both sides of the connecting pipe 150 to adjust the height and angle.

[0027] As a preferred embodiment, refer to Figure 1 and Figure 2 , the controller 220 is arranged on the top handrail 210 of the wheelchair body 200, and the controller 220 is electrically connected with the stair climbing assembly 100, so that the controller 220 controls the stair climbing assembly 100 to start and stop.

[0028] The working principle of the stair climbing double-track wheelchair is as follows:

[0029] When the stair climbing double-track wheelchair climbs the stairs, the stair climbing assembly 100 arranged at the bottom of the wheelchair body 200 is started under the control of the controller 220, so that the inclined second track 120 arranged at the rear end of the stair climbing assembly 100 is driven by the telescopic driving mechanism 140, so that the telescopic rod 142 driven by the telescopic driving member 141 moves, thereby adjusting the inclination angle of the two second tracks 120, testing the inclination angle of the step ladder to be climbed, obtaining the inclination angle, and timely transmitting the inclination angle to the controller 220, so that the controller 220 controls the height and angle of the two first tracks 110 arranged horizontally at the bottom of the wheelchair body 200, so that the two first tracks 110 adjust the support height and support angle of the telescopic rod 142 under the driving of the telescopic driving member 141 on the telescopic driving mechanism 140, so that the first track 110 and the second track 120 on the stair climbing double-track wheelchair rotate under the driving of the rotating driving mechanism 130, so that the first track 110 and the second track 120 move along the inclination angle of the step ladder, and drive the wheelchair body 200 to climb the stairs, so that the stair climbing double-track wheelchair is suitable for climbing different inclination step ladders.

[0030] The utility model discloses a beneficial effect of a stair -climbing double-track wheelchair is:

[0031] I. by the double track installation position on the stair -climbing assembly 100 by the original back type setting changes the bottom setting, change the stair -climbing mode of wheelchair body 200, replace the original personnel assistance, by the stair -climbing mode of wheelchair user oneself control, improve the practicality of stair -climbing double -track wheelchair;

[0032] II. by the adjustable height and angle stair -climbing assembly 100 is set up in the bottom of wheelchair body 200, to make the second track 120 abuts the two steps of stair, carries out the stair -climbing angle measurement, thereby makes several telescopic drive mechanisms 140 on the stair -climbing assembly 100 adjust the height and angle of two first tracks 110, to make the stair -climbing double -track wheelchair can be applicable to the stair of different inclination degree and climb, improve the stair -climbing efficiency of stair -climbing double -track wheelchair.

[0033] The above description is only the preferred embodiment of the application and the explanation of the technical principle and the like scheme used.The utility model range involved in the application, does not limit the technical scheme of the specific combination of the above technical features, and also should cover other technical schemes formed by the above technical features or its equivalent features in any combination without departing from the utility model concept.For example, the technical scheme formed by the above features and the technical features disclosed in the application (but not limited to) with similar functions are replaced with each other.

Claims

1. A stair climbing double-track wheelchair, characterized by: It comprises a stair climbing assembly (100), which is fixedly mounted on the bottom of the seat of the wheelchair body (200) and is used for the stair climbing function of the wheelchair body (200); The stair climbing assembly (100) comprises two first crawlers (110), two second crawlers (120), two rotation drive mechanisms (130) and three telescopic drive mechanisms (140). The two first crawlers (110) are arranged horizontally and spaced apart at the bottom of the wheelchair body (200), and the two second crawlers (120) are arranged obliquely and spaced apart at the rear ends of the two first crawlers (110). A connecting pipe (150) is provided in the middle of the top of the two second crawlers (120). The telescopic drive mechanism (140) is movably mounted on the tube (150) so that the telescopic drive mechanism (140) drives the second crawler (120) to move and adjust its climbing angle, and the corresponding telescopic drive mechanism (140) is movably mounted on the connecting tube (150) provided between the two ends of the two first crawlers (110) so that the telescopic drive mechanism (140) drives the two first crawlers (110) to move in the vertical direction and adjust the height and angle of the first crawlers (110).

2. The stair climbing dual-track wheelchair according to claim 1, characterized in that: The stair climbing assembly (100) further includes a plurality of first connecting plates (160) and a plurality of second connecting plates (170), wherein the plurality of first connecting plates (160) are evenly installed on both sides of each first crawler (110), and each second connecting plate (170) is installed on both sides of each second crawler (120), and each first connecting plate (160) is movably connected to each second connecting plate (170).

3. The stair climbing dual-track wheelchair according to claim 1, characterized in that: The rotating drive members on the two rotating drive mechanisms (130) are respectively installed on the side surfaces of the first connecting plate (160) and the second connecting plate (170), so that the rotating drive members are movably connected to the first crawler (110) and the second crawler (120) through the rotating shaft, so that the rotating drive members drive the first crawler (110) and the second crawler (120) to rotate.

4. The stair climbing dual-track wheelchair according to claim 1, characterized in that: Each of the telescopic drive mechanisms (140) has a compatible structure, and the telescopic drive mechanism (140) includes a telescopic drive member (141) and a telescopic rod (142). The bottom of the telescopic rod (141) is connected to each of the connecting tubes (150), and the telescopic rod (142) is fixedly connected to the output end of the telescopic drive member (141), so that the telescopic drive member (141) drives the telescopic rod (142) to perform telescopic adjustment.

5. The stair climbing dual-track wheelchair according to claim 1, characterized in that: A controller (220) is provided on the top handrail (210) of the wheelchair body (200), and the controller (220) is electrically connected to the stair climbing assembly (100) so that the controller (220) controls the startup and shutdown of the stair climbing assembly (100).

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