Crawler-type electric stair-climbing chair convenient to fold and store

Abstract

The utility model discloses a crawler belt type electric stair climbing chair convenient to fold and store, which comprises a crawler belt seat, a seat component and a backrest component, the seat component and the backrest component are arranged on the crawler belt seat, rear wheel carriers are symmetrically arranged on the rear side of the crawler belt seat, and front wheel carriers are symmetrically arranged on the front side of the crawler belt seat. In the using process of the crawler-type electric stair climbing chair, the rear wheel frame and the front wheel frame are turned over to the position above or below the crawling ladder crawler belt, so that wheel type walking on the flat ground and crawler-type walking on stair climbing are switched, and through the walking design that the crawling ladder crawler belt is combined with the seat assembly and the backrest assembly, the walking efficiency is improved. The gravity center of a user can adapt to the descending state of inclined stair climbing, and therefore the stability and comfort in the stair climbing process can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of caterpillar electric stair climbing chair, specifically relates to a caterpillar electric stair climbing chair convenient to fold and store. BACKGROUND

[0002] There are many disabled people and the elderly who need to ride wheelchairs due to physical defects or diseases. When they live in buildings without elevator facilities, going up and down the stairs becomes a difficult task.

[0003] In order to improve this problem, there are some different structures of electric wheelchairs with stair climbing function at home and abroad, mainly including planetary wheel type stair climbing wheelchair, caterpillar type stair climbing wheelchair, walking type stair climbing wheelchair and the above three ways. Among them, the caterpillar type stair climbing wheelchair mechanism switches its walking mode to realize wheel type walking on flat ground and caterpillar type walking when climbing stairs, which has certain advantages in considering walking power consumption and climbing safety.

[0004] In the prior art, such as the patent "foldable electric caterpillar stair climbing wheelchair" with publication number CN219332251 U, it discloses a foldable caterpillar mechanism on the rear side of the wheelchair to switch between wheel type walking on flat ground and caterpillar type walking when climbing stairs, but when switching to caterpillar type walking when climbing stairs, the caterpillar and the seat are separated front and back, and the user's center of gravity cannot adapt to the inclined state of descending stairs, affecting the stability and comfort of the user during the climbing process. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a caterpillar electric stair climbing chair convenient to fold and store, to solve the problems raised in the background art.

[0006] The utility model can achieve the purpose by the following technical scheme:

[0007] A caterpillar electric stair climbing chair convenient to fold and store, comprising a caterpillar seat, a seat assembly and a backrest assembly arranged on the caterpillar seat, a rear wheel frame symmetrically arranged on the rear side of the caterpillar seat, and a front wheel frame symmetrically arranged on the front side of the caterpillar seat;

[0008] When the caterpillar electric stair climbing chair is in a wheel type walking state on flat ground, the rear wheel frame and the front wheel frame are respectively turned over to the lower side of the caterpillar seat;

[0009] When the caterpillar electric stair climbing chair is in a caterpillar type walking state on stairs, the rear wheel frame and the front wheel frame are respectively turned over to the upper side of the caterpillar seat, and are in walking contact with the stair steps through the stair caterpillar on the caterpillar seat.

[0010] As a further scheme of the present utility model: the bottom of the track seat is packaged with a driving mechanism, the driving mechanism and the ladder track are drivingly connected.

[0011] As a further scheme of the present utility model: the driving mechanism comprises a driving motor, a driving chain and a linkage shaft, the output shaft end of the driving motor is drivingly connected with the linkage shaft through the driving chain, and the two ends of the linkage shaft are respectively connected with the driving ends of the ladder track.

[0012] As a further scheme of the present utility model: a plurality of convex tooth parts are uniformly arranged on the outer surface of the ladder track.

[0013] As a further scheme of the present utility model: the top of the track seat is packaged with a rear wheel turnover mechanism, the rear wheel turnover mechanism and the rear wheel frame are drivingly connected.

[0014] As a further scheme of the present utility model: the rear wheel turnover mechanism comprises a turnover frame, an extension piece one and an extension piece two, the front side of the turnover frame is hingedly connected with the extension piece one, the back side is hingedly connected with the extension piece two, one end of the extension piece one and the extension piece two away from the turnover frame are respectively hingedly connected with the track seat, and the two ends of the turnover frame are respectively connected with the rear wheel frame.

[0015] As a further scheme of the present utility model: the top of the track seat is further packaged with a front wheel turnover mechanism, the front wheel turnover mechanism and the front wheel frame are drivingly connected.

[0016] As a further scheme of the present utility model: the front wheel turnover mechanism comprises a turnover shaft, a turnover block and an extension piece three, one end of the extension piece three is hingedly connected with the turnover block on the turnover shaft, the other end of the extension piece three is hingedly connected with the track seat, and the two ends of the turnover shaft are respectively connected with the front wheel frame.

[0017] As a further scheme of the present utility model: the track seat, the seat assembly and the backrest assembly are connected through a folding linkage mechanism; when the track type electric ladder chair is in a folding storage state, the seat assembly and the backrest assembly jointly fold and turn towards the track seat.

[0018] As a further scheme of the present utility model: one end of the support rod of the folding linkage mechanism is hingedly connected with the track seat, the other end is respectively hingedly connected with one end of the seat frame and the linkage rod, the two sides of the seat frame are respectively buckle-connected with the seat linkage rods, one end of the seat linkage rods and one end of the linkage rod away from the support rod are jointly hingedly connected with one end of the backrest linkage rod, and the other end of the backrest linkage rod is fixedly connected with the backrest assembly.

[0019] The seat frame is provided with a sliding channel, the end of a sliding rod is slidably connected in the sliding channel, and one end of a folding connecting rod is symmetrically hingedly connected to the sliding rod, and the other end of the folding connecting rod is hingedly connected to the track seat.

[0020] The utility model discloses beneficial effects:

[0021] (1) the track type electric stair climbing chair of the application is used in the process, the rear wheel frame and the front wheel frame are turned over to the upper or lower of the stair climbing track, so that the wheel type walking on the ground and the track type walking on the stair climbing are switched, the stair climbing track is combined with the seat assembly and the backrest assembly walking design, the user's gravity center can adapt to the inclined stair climbing descending state, so that the stability and comfort in the process of stair climbing can be ensured;

[0022] (2) when the track type electric stair climbing chair of the application is switched to climb the stairs, the driving motor is convenient for driving the connecting shaft to rotate through the driving chain, so that the stair climbing track rotates on the stair step, so that the track type electric stair climbing chair can walk upstairs or downstairs;

[0023] (3) in the process of switching the wheel type walking on the ground and the track type walking on the stair climbing of the track type electric stair climbing chair of the application, the rear wheel frame is turned over through the cooperation of the telescopic piece one and the telescopic piece two to realize the pulling of the turnover frame, the front wheel frame is turned over through the telescopic piece three and the turnover block to realize the pulling of the turnover shaft, so that the rear wheel frame and the front wheel frame can be turned over to the upper or lower of the stair climbing track, and the operation is convenient;

[0024] (4) in the process of not using or transporting the track type electric stair climbing chair of the application, the track seat, the seat assembly and the backrest assembly can be linked and folded through the folding linkage mechanism, so that the space area is not occupied, so as to facilitate the folding and application;

[0025] (5) the armrest assembly is rotationally connected to the seat connecting rod and the backrest connecting rod hinge position, the use height of the armrest assembly can be adjusted, and the width gap distance of the two armrest assemblies can be adjusted, so as to facilitate the multifunctional adjustment and use of the user, and meet the actual functional adjustment demand of the armrest;

[0026] (6) the transition connecting block is additionally arranged between the backrest assembly and the backrest connecting rod in the process of connecting the backrest assembly through the backrest connecting rod, so that the inclination installation angle of the backrest assembly can be adjusted and changed, so as to meet the backrest angle adjustment demand of the user. BRIEF DESCRIPTION OF DRAWINGS

[0027] The utility model will be further described in connection with the drawings.

[0028] Figure 1 It is a lateral structure schematic view of the utility model;

[0029] Figure 2is another lateral structure schematic view of the utility model;

[0030] Figure 3 is the ladder catenary through drive mechanism connection schematic view of the utility model;

[0031] Figure 4 is the rear wheel frame and front wheel frame corresponding connection overturning mechanism schematic view of the utility model respectively;

[0032] Figure 5 is the seat component and backrest component through folding linkage mechanism connection schematic view of the utility model between the catenary seat;

[0033] Figure 6 is the backrest component bottom two sides respectively set backrest link schematic view of the utility model;

[0034] Figure 7 is the transition link between the backrest link and backrest component set schematic view of the utility model;

[0035] Figure 8 is the handrail component structure schematic view of the utility model;

[0036] Figure 9 is the ladder catenary state schematic view of the utility model application;

[0037] Figure 10 is the folding state schematic view of the utility model application.

[0038] In the drawing: 1, catenary seat; 2, rear wheel frame; 3, front wheel frame; 4, ladder catenary; 40, convex tooth part; 5, seat component; 50, seat frame; 51, seat link; 52, support rod; 53, slide; 54, sliding rod; 55, folding link; 6, backrest component; 60, backrest link; 600, lower bolt connection part; 601, upper bolt connection part; 61, transition link; 610, adjusting hole; 7, handrail component; 70, lower support rod; 71, upper lifting sleeve rod; 72, supporting plate; 8, footboard; 9, drive motor; 10, drive chain; 11, linkage shaft; 12, overturning frame; 13, telescopic part one; 14, telescopic part two; 15, overturning shaft; 16, overturning block; 17, telescopic part three; 18, linkage rod. DETAILED DESCRIPTION

[0039] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of the utility model.

[0040] In the description of the utility model, it is understood that the terms indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not indicative or suggestive of the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model; in the description of the utility model, the meaning of "a plurality of" and "several" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0041] Please refer to Figure 1 and Figure 9 The utility model discloses a kind of caterpillar electric stair climbing chairs of folding storage, including caterpillar seat 1 and be equipped on caterpillar seat 1 seat component 5 and backrest component 6, the rear side of caterpillar seat 1 is symmetrically equipped with rear wheel frame 2, and front side is symmetrically equipped with front wheel frame 3;When caterpillar electric stair climbing chair is in the wheeled walking state on flat ground, rear wheel frame 2 and front wheel frame 3 are respectively turned over to the below of caterpillar seat 1;When caterpillar electric stair climbing chair is in the caterpillar walking state on stair climbing, rear wheel frame 2 and front wheel frame 3 are respectively turned over to the above of caterpillar seat 1, and keep walking contact with stair step by caterpillar seat 1 on stair climbing caterpillar 4.

[0042] The caterpillar electric stair climbing chair of the application switches in the wheeled walking on flat ground and the caterpillar walking on stair climbing by turning over rear wheel frame 2 and front wheel frame 3 to the above or below of stair climbing caterpillar 4, and the stability and comfort in the process of climbing stair can be ensured by the walking design of combining stair climbing caterpillar 4 with seat component 5 and backrest component 6, so that the gravity center of user can adapt to inclined stair climbing descending state.

[0043] In the specific embodiment, as shown in Figure 2 and Figure 3 The bottom of caterpillar seat 1 is encapsulated with driving mechanism, and driving mechanism is drivingly connected between stair climbing caterpillar 4;Driving mechanism includes driving motor 9, driving chain 10 and linkage shaft 11, and the output shaft end of driving motor 9 is drivingly connected with linkage shaft 11 through driving chain 10, and the two ends of linkage shaft 11 are respectively connected with the driving end of stair climbing caterpillar 4;When the caterpillar electric stair climbing chair of the application is switched to climb stair, driving motor 9 is convenient to drive linkage shaft 11 to rotate through driving chain 10, so that stair climbing caterpillar 4 rotates on stair step, so that caterpillar electric stair climbing chair can walk upstairs or downstairs.

[0044] In the specific embodiment, as shown in Figure 1 The outer surface of stair climbing caterpillar 4 is evenly provided with a plurality of convex tooth parts 40, and the convex tooth parts 40 are arranged to increase the engagement force between stair step, so that stair climbing caterpillar 4 rotates and walks safely on stair step.

[0045] In the embodiment, as shown in Figure 4 The top of the track base 1 is encapsulated with a rear wheel turnover mechanism, which is drivingly connected with the rear wheel frame 2; the rear wheel turnover mechanism comprises a turnover frame 12, an extension piece one 13 and an extension piece two 14, the front side of the turnover frame 12 is hingedly connected with the extension piece one 13, the rear side is hingedly connected with the extension piece two 14, and the ends of the extension piece one 13 and the extension piece two 14 away from the turnover frame 12 are respectively hingedly connected with the track base 1, and the two ends of the turnover frame 12 are respectively connected with the rear wheel frame 2.

[0046] In the embodiment, as shown in Figure 4 The top of the track base 1 is also encapsulated with a front wheel turnover mechanism, which is drivingly connected with the front wheel frame 3; the front wheel turnover mechanism comprises a turnover shaft 15, a turnover block 16 and an extension piece three 17, one end of the extension piece three 17 is hingedly connected with the turnover shaft 15 through the turnover block 16, the other end of the extension piece three 17 is hingedly connected with the track base 1, and the two ends of the turnover shaft 15 are respectively connected with the front wheel frame 3.

[0047] During the switching process of the track type electric stair climbing chair between the wheeled walking on the flat ground and the track type walking on the stairs, the turnover of the rear wheel frame 2 is realized by pulling the turnover frame 12 through the cooperation of the extension piece one 13 and the extension piece two 14, and the turnover of the front wheel frame 3 is realized by pulling the turnover shaft 15 through the extension piece three 17 and the turnover block 16, so that the rear wheel frame 2 and the front wheel frame 3 can be turned over to the upper side or the lower side of the stair climbing track 4, which is convenient to operate.

[0048] It should be understood that the extension piece one 13, the extension piece two 14 and the extension piece three 17 can be air cylinder extension pieces, or other power pieces that can be extended or retracted, such as hydraulic cylinders or electric push rods.

[0049] In the embodiment, as shown in Figure 1 and Figure 10 The track base 1, the seat assembly 5 and the backrest assembly 6 are connected through a folding linkage mechanism; when the track type electric stair climbing chair is in a folded storage state, the seat assembly 5 and the backrest assembly 6 are folded and turned over together towards the track base 1; during non-use or transportation, the track type electric stair climbing chair can be folded through the folding linkage mechanism, so that the track base 1, the seat assembly 5 and the backrest assembly 6 are linked and folded, without occupying space, so as to facilitate the folding and storage application.

[0050] In the embodiment, as shown in Figure 5As shown, the folding linkage mechanism includes a support rod 52 hingedly connected to the crawler seat 1 at one end, and hingedly connected to the seat frame 50 and one end of the linkage rod 18 at the other end, respectively. The seat frame 50 is buckle-connected to the seat connecting rod 51 on both sides, respectively. One end of the seat connecting rod 51 and the end of the linkage rod 18 away from the support rod 52 are hingedly connected to one end of the backrest connecting rod 60, and the other end of the backrest connecting rod 60 is fixedly connected to the backrest assembly 6. A sliding channel 53 is formed in the seat frame 50, and the end of the sliding rod 54 is slidingly connected in the sliding channel 53. The sliding rod 54 is symmetrically hingedly connected to one end of the folding connecting rod 55, and the other end of the folding connecting rod 55 is hingedly connected to the crawler seat 1.

[0051] In the folding process of the crawler electric stair climbing chair, the seat assembly 5 is unlocked in advance, and the rear side of the seat frame 50 is turned towards the crawling ladder crawler 4 to be close to the folding by the support rod 52. At this time, the folding connecting rod 55 pulls the sliding rod 54 to move along the sliding channel 53, and the sliding direction of the sliding rod 54 is towards the front side of the seat frame 50, so as to make the seat assembly 5 as a whole turn towards the crawling ladder crawler 4 to be close to the folding. During the folding process of the seat assembly 5, the support rod 52 pulls the backrest connecting rod 60 through the linkage rod 18 to act, so as to make the backrest assembly 6 close to the seat assembly 5 to be folded, until the linkage folding of the crawler seat 1, the seat assembly 5 and the backrest assembly 6 is completed.

[0052] In the specific embodiment, as shown in Figure 1 and Figure 8 , the seat connecting rod 51 and the backrest connecting rod 60 are rotationally connected to the armrest assembly 7 at the hinge position, so that the armrest assembly 7 can follow the folding and folding. When the armrest assembly 7 is opened and used, the armrest assembly 7 includes a lower support rod 70, an upper lifting sleeve rod 71 and a supporting plate 72. The lower support rod 70 and the upper lifting sleeve rod 71 can be designed to be lifted and pulled, so as to adjust the use height of the armrest assembly 7. In addition, the supporting plate 72 is installed at the top end of the upper lifting sleeve rod 71, and the installation position of the supporting plate 72 can be changed to adjust the width gap distance of the two side armrest assemblies 7, so as to adjust the width for the user.

[0053] In the specific embodiment, as shown in Figure 6 and Figure 7 , a transition connecting block 61 is additionally arranged between the backrest assembly 6 and the backrest connecting rod 60 during the connection of the backrest assembly 6 through the backrest connecting rod 60. The lower bolted part 600 of the backrest connecting rod 60 can be fixedly connected to the transition connecting block 61, and the fixed position of the upper bolted part 601 can be selected from the multiple rows of adjustment holes 610 on the transition connecting block 61, so as to adjust and change the inclination installation angle of the backrest assembly 6 to meet the backrest angle adjustment needs of the user.

[0054] In the specific embodiment, as shown in Figure 1As shown, the front side hinge mounting footboard 8 of the ladder crawler 4.

[0055] The above has carried out the detailed explanation to one embodiment of the utility model, but the content described is only the preferred embodiment of the utility model, cannot be considered for limiting the implementation scope of the utility model. All equal changes and improvements etc. that are made in the utility model application scope should still belong to the patent coverage scope of the utility model.

Claims

1. A caterpillar electric stair climbing chair which is easy to fold and store, characterized in that, The track seat (1) is provided with a seat assembly (5) and a backrest assembly (6) on the track seat (1), the rear side of the track seat (1) is symmetrically provided with a rear wheel frame (2), and the front side is symmetrically provided with a front wheel frame (3); When the track type electric stair climbing chair is in the wheeled walking state on the ground, the rear wheel frame (2) and the front wheel frame (3) are respectively turned to the lower side of the track seat (1); When the track type electric stair climbing chair is in the track type walking state on the stairs, the rear wheel frame (2) and the front wheel frame (3) are respectively turned to the upper side of the track seat (1), and are in walking contact with the stair steps through the stair climbing track (4) on the track seat (1); The track seat (1), the seat assembly (5) and the backrest assembly (6) are connected through a folding linkage mechanism; when the track type electric stair climbing chair is in a folded storage state, the seat assembly (5) and the backrest assembly (6) are folded and turned together towards the track seat (1).

2. The foldable caterpillar electric stair climbing chair according to claim 1, wherein, The bottom of the track seat (1) is packaged with a driving mechanism, and the driving mechanism is drivingly connected with the stair climbing track (4).

3. The foldable caterpillar electric stair climber of claim 2, wherein, The driving mechanism includes a driving motor (9), a driving chain (10) and a linkage shaft (11), the output shaft end of the driving motor (9) is drivingly connected with the linkage shaft (11) through the driving chain (10), and the two ends of the linkage shaft (11) are respectively connected with the driving ends of the stair climbing track (4).

4. The foldable caterpillar electric stair climber of claim 3, wherein, The outer surface of the stair climbing track (4) is uniformly provided with a plurality of protruding tooth portions (40).

5. The foldable caterpillar electric stair chair according to claim 1, wherein, The top of the track seat (1) is packaged with a rear wheel turning mechanism, and the rear wheel turning mechanism is drivingly connected with the rear wheel frame (2).

6. The foldable track-type electric stair climbing chair according to claim 5, wherein, The rear wheel turning mechanism includes a turning frame (12), a first telescopic part (13) and a second telescopic part (14), the front side of the turning frame (12) is hingedly connected with the first telescopic part (13), the rear side is hingedly connected with the second telescopic part (14), one end of the first telescopic part (13) and the second telescopic part (14) away from the turning frame (12) is respectively hingedly connected with the track seat (1), and the two ends of the turning frame (12) are respectively connected with the rear wheel frame (2).

7. The foldable caterpillar electric stair chair according to claim 1, wherein, The top of the track seat (1) is also packaged with a front wheel turning mechanism, and the front wheel turning mechanism is drivingly connected with the front wheel frame (3).

8. The foldable track-type electric stair climber of claim 7, wherein, The front wheel turning mechanism includes a turning shaft (15), a turning block (16) and a third telescopic part (17), one end of the third telescopic part (17) is hingedly connected with the turning block (16) on the turning shaft (15), the other end of the third telescopic part (17) is hingedly connected with the track seat (1), and the two ends of the turning shaft (15) are respectively connected with the front wheel frame (3).

9. The foldable track-type electric stair climbing chair of claim 1, wherein, The folding linkage mechanism comprises a support rod (52) hingedly connected to the track seat (1) at one end and hingedly connected to a seat frame (50) and one end of a linkage rod (18) at the other end, the seat frame (50) is buckle-connected to seat connecting rods (51) at both sides, one end of the seat connecting rods (51) and one end of the linkage rod (18) away from the support rod (52) are hingedly connected to one end of a backrest connecting rod (60), and the other end of the backrest connecting rod (60) is fixedly connected to the backrest assembly (6). Wherein, a slide (53) is formed on the seat frame (50), an end of a sliding rod (54) is slidingly connected in the slide (53), and one end of a folding connecting rod (55) is hingedly connected to the sliding rod (54) in a symmetrical manner, and the other end of the folding connecting rod (55) is hingedly connected to the track seat (1).

Images