Anti-slip electric wheelchair

Abstract

The utility model discloses an anti-slip electric wheelchair which comprises a brake assembly, and the brake assembly comprises a bottom frame, a mounting seat, a bearing, a wheel axle, wheels, bolts, a supporting plate and a brake disc. According to the utility model, through the uniquely designed brake assembly, the synchronous hydraulic cylinder is utilized to push the clamping block, so that the brake pad is tightly attached to the brake disc, the gliding component force of the wheelchair on the slope surface can be effectively resisted, the reliable anti-slip and stable braking functions are realized, the safety of a user on the slope surface is greatly improved, the slip risk is reduced, and the safety of the user on the slope surface is improved. The travel safety of the user is improved; through the controller installed on the armrest frame, a user can conveniently control the rotating speed and the rotating direction of the driving motor and the working state of the synchronous hydraulic cylinder, accurate operation such as starting, stopping, accelerating, decelerating and steering of the wheelchair is achieved, meanwhile, the brake function can be started in time when needed, various driving conditions can be effectively coped with, and the wheelchair is convenient to use. And the operation experience of the user and the control capability of the wheelchair are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric wheelchair technical field, concretely is a kind of anti-slope electric wheelchair. BACKGROUND

[0002] Electric wheelchair is the key auxiliary tool of the person who is inconvenient to move, and use scene is miscellaneous and various. In city, community road, parking lot, park path, even old urban road has various slopes, and it is often accompanied by narrow, pothole, turning and so on;Rural path is influenced by terrain, slope is changeable, road condition is poor, muddy in rainy day, dust in sunny day;Although public place is equipped with wheelchair ramp, but the flow is big, in these complex scenes, electric wheelchair frequently faces slope challenge, brake is unstable once, and it is easy to slide on slope.

[0003] The brake device of existing electric wheelchair is not perfect, when parking on slope, only rely on conventional hand brake to resist the sliding component force of wheelchair self gravity along slope, and it is easy to appear sliding on slope phenomenon, which seriously threatens the personal safety of user, greatly limits the use range and scene of electric wheelchair, reduces the safety feeling of user when going out, therefore, an anti-slope electric wheelchair is proposed. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an anti-slope electric wheelchair to solve one of the problems in the above background.

[0005] The utility model is implemented by the following technical scheme: an anti-slope electric wheelchair, comprising brake assembly, the brake assembly includes bottom frame, mounting seat, bearing, axle, wheel, bolt, support plate, connecting block, brake caliper, limit slot, clamping block, fixing frame, synchronous hydraulic cylinder, mounting groove, brake pad and brake disc;

[0006] The upper surface both sides of the front of the bottom frame are fixedly connected with mounting seat, the inner side wall of two mounting seats is rotatably connected with axle through bearing, the outer side wall both sides of the axle are fixedly connected with wheel, the front surface middle part of the bottom frame is fixedly connected with support plate through multiple bolts, the rear surface upper part center of the support plate is welded with connecting block, the rear surface of the connecting block is welded with brake caliper, the inner side wall both sides of the brake caliper is provided with limit slot, the inner side wall of two limit slots is slidably connected with clamping block, the rear surface upper part both sides of the support plate are welded with fixing frame, the inner side wall of two fixing frames is fixedly connected with synchronous hydraulic cylinder, the output end of two synchronous hydraulic cylinders is fixedly connected with the center of the side far away from each other of two clamping blocks respectively, the side close to each other of two clamping blocks is provided with mounting groove, the inner side wall of two mounting grooves is fixedly connected with brake pad, the outer side wall middle part of the axle is fixedly connected with brake disc, the side close to each other of two brake pads is connected to the both sides of the outer side of brake disc.

[0007] As a further preferred of the technical solution: the upper and lower sides of the two clamping blocks are fixedly connected with limiting columns, the upper and lower sides of the brake caliper are provided with limiting holes, and the outer side wall of the limiting column is slidably connected to the inner side wall of the limiting hole.

[0008] As a further preferred of the technical solution: one end of the limiting column away from the clamping block is fixedly connected with a limiting disc, the outer side wall of the limiting column away from the clamping block is sleeved with a spring, one end of the spring is connected to the outer side of the limiting disc, and the other end of the spring is connected to the outer side of the limiting hole of the brake caliper.

[0009] As a further preferred of the technical solution: the front surface of the brake caliper is provided with a plurality of ventilation grooves.

[0010] As a further preferred of the technical solution: the upper surface of the bottom frame is welded with seat frames at four corners, the inner side wall of the seat frame is fixedly connected with a driving motor at one side of the rear part through a connecting frame, the output end of the driving motor is fixedly connected with a driving wheel, the outer side wall of the wheel shaft is fixedly connected with a driven wheel at one side close to the driving wheel, and the outer side wall of the driving wheel is rotatably connected to the outer side wall of the driven wheel through a toothed belt.

[0011] As a further preferred of the technical solution: the upper surface of the seat frame is hingedly connected with a cushion frame at the front part, the two sides of the cushion frame are welded with armrest frames, the upper surface of one of the armrest frames is provided with a controller at the front part, and the input end of the driving motor is electrically connected to the output end of the controller.

[0012] As a further preferred of the technical solution: the lower surface of the bottom frame is provided with universal wheels at the front part of both sides.

[0013] As a further preferred of the technical solution: the upper surface of the seat frame is hingedly connected with a cushion frame at the front part, the two sides of the cushion frame are welded with armrest frames, the upper surface of one of the armrest frames is provided with a controller at the front part, and the input end of the driving motor is electrically connected to the output end of the controller.

[0014] The advantages of the present application are:

[0015] 1. The brake assembly is designed in a unique way, the clamping block is pushed by the synchronous hydraulic cylinder, the brake pad is tightly attached to the brake disc, the sliding force of the wheelchair on the slope can be effectively resisted, the reliable anti-slip and stable braking functions are realized, the safety of the user on the slope is greatly improved, the risk of sliding on the slope is reduced, and the safety of the user during travel is improved.

[0016] 2, the utility model discloses a controller is installed on the handrail frame, and the user can conveniently control the rotating speed, rotating direction and the working state of synchronous hydraulic cylinder of drive motor, realizes the accurate operation of wheelchair, such as starting, stopping, accelerating, decelerating and steering etc., can start brake function in time when needing, effectively deals with various travel conditions, improves the operation experience of user and the control ability of wheelchair. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and all other embodiments obtained by those skilled in the art without creative labor under the premise of the utility model protection scope.

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the bottom frame and wheel axle structure schematic diagram of the utility model;

[0020] Figure 3 It is the brake caliper and brake disc structure schematic diagram of the utility model;

[0021] Figure 4 It is the Figure 3 Another view structure schematic diagram of the utility model.

[0022] In the drawing: 1, brake assembly;11, bottom frame;12, mounting seat;13, bearing;14, wheel axle;15, wheel;16, bolt;17, support plate;18, connecting block;19, brake caliper;20, limit groove;21, clamping block;22, fixed frame;23, synchronous hydraulic cylinder;24, installation recess;25, brake pad;26, brake disc;27, limit column;28, limit hole;29, limit disc;30, spring;31, ventilation groove;32, seat frame;33, connecting frame;34, drive motor;35, driving wheel;36, driven wheel;37, toothed belt;38, cushion frame;39, handrail frame;40, controller;41, universal wheel;42, backrest frame;43, leg support frame. DETAILED DESCRIPTION

[0023] 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, and obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor under the premise of the utility model protection scope.

[0024] Embodiment

[0025] Please refer to Figures 1-4 The utility model provides a technical scheme: a kind of anti-slope electric wheelchair, including brake assembly 1, brake assembly 1 includes bottom frame 11, mounting seat 12, bearing 13, axle 14, wheel 15, bolt 16, support plate 17, connecting block 18, brake caliper 19, limiting groove 20, clamping block 21, fixed frame 22, synchronous hydraulic cylinder 23, mounting groove 24, brake pad 25 and brake disc 26;

[0026] The upper surface both sides front of bottom frame 11 are fixedly connected with mounting seat 12, the inner side wall of two mounting seats 12 is rotatably connected with axle 14 by bearing 13, the outer side wall both sides of axle 14 are fixedly connected with wheel 15, the front surface middle part of bottom frame 11 is fixedly connected with support plate 17 by multiple bolt 16, the rear surface upper part center of support plate 17 is welded with connecting block 18, the rear surface of connecting block 18 is welded with brake caliper 19, the inner side wall both sides of brake caliper 19 are equipped with limiting groove 20, the inner side wall of two limiting grooves 20 is slidably connected with clamping block 21, the rear surface upper part both sides of support plate 17 are welded with fixed frame 22, the inner side wall of two fixed frames 22 is fixedly connected with synchronous hydraulic cylinder 23, the output end of two synchronous hydraulic cylinders 23 is fixedly connected at the center of the side of two clamping blocks 21 far away from each other respectively, the side of two clamping blocks 21 close to each other is equipped with mounting groove 24, the inner side wall of two mounting grooves 24 is fixedly connected with brake pad 25, the outer side wall middle part of axle 14 is fixedly connected with brake disc 26, the side of two brake pads 25 close to each other is connected to the outer side both sides of brake disc 26, by the sliding of clamping block 21 in the inside of limiting groove 20, so as to limit clamping block 21, and then increase the stability of clamping block 21 movement.

[0027] In the embodiment, specifically: the upper part and the lower part of the side of two clamping blocks 21 far away from each other are fixedly connected with limiting column 27, the upper part and the lower part of both sides of brake caliper 19 are equipped with limiting hole 28, the outer side wall of limiting column 27 is slidably connected to the inner side wall of limiting hole 28, by the sliding of limiting column 27 on clamping block 21 in the inside of limiting hole 28, so as to limit limiting column 27, and then increase the stability of clamping block 21 movement.

[0028] In this embodiment, specifically: the end of the limiting column 27 away from the clamping block 21 is fixedly connected with a limiting disc 29, the outer side wall of the limiting column 27 away from the clamping block 21 is sleeved with a spring 30, one end of the spring 30 is connected to the outer side of the limiting disc 29, the other end of the spring 30 is connected to the outer side of the brake caliper 19 near the limiting hole 28, the limiting disc 29 is moved by the pushing force of the spring 30, so as to drive the limiting column 27, the clamping block 21 and the brake pad 25 to reset and move, and then the brake pad 25 and the brake disc 26 are quickly separated.

[0029] In this embodiment, specifically: the front surface of the brake caliper 19 is provided with a plurality of ventilation grooves 31, the ventilation grooves 31 on the front surface of the brake caliper 19 help heat dissipation, so as to prevent the brake pad 25 and the brake disc 26 from affecting the braking effect due to overheating.

[0030] In this embodiment, specifically: the upper surface of the bottom frame 11 is welded with seat frames 32 at four corners, the inner side wall of the seat frame 32 is fixedly connected with a driving motor 34 at one side of the rear part through a connecting frame 33, the output end of the driving motor 34 is fixedly connected with a driving wheel 35, the outer side wall of the wheel shaft 14 is fixedly connected with a driven wheel 36 near one side of the driving wheel 35, the outer side wall of the driving wheel 35 is rotatably connected to the outer side wall of the driven wheel 36 through a toothed belt 37, the driving wheel 35 is driven to rotate by the driving motor 34, so as to drive the driven wheel 36 connected through the toothed belt 37 to rotate, and then the wheel shaft 14 is rotated, the wheel 15 is driven to rotate by the wheel shaft 14, so as to realize the normal movement of the wheelchair.

[0031] In this embodiment, specifically: the upper surface of the seat frame 32 is hingedly connected with a seat cushion frame 38 at the front part, the seat cushion frame 38 is welded with armrest frames 39 at both sides, the upper surface of one of the armrest frames 39 is installed with a controller 40, the input end of the driving motor 34 is electrically connected to the output end of the controller 40, the seat cushion frame 38 facilitates the user to sit on the wheelchair; the controller 40 facilitates the control of the rotating speed and direction of the driving motor 34; at the same time, the control facilitates the control of the working state of the synchronous hydraulic cylinder 23.

[0032] In this embodiment, specifically: the lower surface of the bottom frame 11 is installed with universal wheels 41 at the front part of both sides, the universal wheels 41 facilitate the auxiliary movement of the wheelchair.

[0033] In this embodiment, specifically: the upper surface of the seat cushion frame 38 is hingedly connected with a backrest frame 42 at the rear part, the rear surface of the seat frame 32 is hingedly connected with a leg support frame 43 at the top, the backrest frame 42 facilitates the user to lean, and the leg support frame 43 facilitates the support of the user's legs.

[0034] The working principle or structural principle is that, in use, when normally driving, the driving motor 34 is started under the control of the controller 40, the output end of the driving motor 34 drives the driving wheel 35 to rotate, the driving wheel 35 drives the driven wheel 36 to rotate through the toothed belt 37, and then the wheel shaft 14 is rotated, the wheel shaft 14 drives the wheel 15 to rotate, and the normal driving of the wheelchair is realized, at this time, the synchronous hydraulic cylinder 23 is in the initial state, the clamping block 21 is in the loosening state under the action of the spring 30, the brake pad 25 does not contact the brake disc 26, and the normal rotation of the wheel 15 is not affected; when encountering the situation of sliding down the slope or needing to brake, the synchronous hydraulic cylinder 23 is started through the controller 40, the output end of the synchronous hydraulic cylinder 23 drives the clamping block 21 to move, the clamping block 21 slides along the limiting groove 20 to the direction close to the brake disc 26 under the action of the synchronous hydraulic cylinder 23, at this time, the limiting column 27 slides in the limiting hole 28, and the functions of guiding and limiting are realized, and the spring 30 is compressed; with the movement of the clamping block 21, the brake pad 25 installed on the clamping block 21 gradually approaches and adheres to the brake disc 26, the wheel 15 is stopped or the rotation speed of the wheel 15 is limited through the friction force, so that the wheelchair is prevented from sliding down the slope or the brake function is realized; after the brake is finished, the synchronous hydraulic cylinder 23 is retracted under the control of the controller 40, the output end of the synchronous hydraulic cylinder 23 pulls the clamping block 21 to move away from the brake disc 26, and at the same time, under the action of the restoring force of the spring 30, the clamping block 21 accelerates to return to the initial position, so that the brake pad 25 is separated from the brake disc 26, the wheel 15 can restore the free rotation state, and the wheelchair can continue to normally drive or perform other operations.

[0035] The above merely describes the preferred embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A hill descent electric wheelchair, characterized in that, The utility model provides a brake assembly (1), the brake assembly (1) includes bottom frame (11), mounting seat (12), bearing (13), wheel shaft (14), wheel (15), bolt (16), support plate (17), connecting block (18), brake caliper (19), limiting groove (20), clamping block (21), fixed frame (22), synchronous hydraulic cylinder (23), installation recess (24), brake pad (25) and brake disc (26); The upper surface of the bottom frame (11) is fixedly connected with mounting seats (12) on both sides of the front part, the inner side walls of the two mounting seats (12) are rotatably connected with wheel shafts (14) through bearings (13), the outer side walls of the wheel shafts (14) are fixedly connected with wheels (15) on both sides, the front surface of the bottom frame (11) is fixedly connected with a support plate (17) through a plurality of bolts (16), the rear surface of the support plate (17) is welded with a connecting block (18) at the upper center, the rear surface of the connecting block (18) is welded with a brake caliper (19), the inner side walls of the brake caliper (19) are provided with limiting grooves (20) on both sides, the inner side walls of the two limiting grooves (20) are slidably connected with clamping blocks (21), the rear surface of the support plate (17) is welded with fixed frames (22) on both sides of the upper part, the inner side walls of the two fixed frames (22) are fixedly connected with synchronous hydraulic cylinders (23), the output ends of the two synchronous hydraulic cylinders (23) are fixedly connected with the centers of the sides of the two clamping blocks (21) that are away from each other, the sides of the two clamping blocks (21) that are close to each other are provided with installation recesses (24), the inner side walls of the two installation recesses (24) are fixedly connected with brake pads (25), the outer side walls of the wheel shafts (14) are fixedly connected with brake discs (26) in the middle, and the sides of the two brake pads (25) that are close to each other are connected to the outer sides of the two sides of the brake disc (26).

2. The electric wheelchair according to claim 1, wherein The upper part and the lower part of the side of the two clamping blocks (21) that are away from each other are fixedly connected with limiting columns (27), the upper part and the lower part of the two sides of the brake caliper (19) are provided with limiting holes (28), and the outer side walls of the limiting columns (27) are slidably connected to the inner side walls of the limiting holes (28).

3. The electrically powered wheelchair according to claim 2, wherein The end of the limiting column (27) that is away from the clamping block (21) is fixedly connected with a limiting disc (29), the outer side of the limiting column (27) that is away from the clamping block (21) is sleeved with a spring (30), one end of the spring (30) is connected to the outer side of the limiting disc (29), and the other end of the spring (30) is connected to the outer side of the brake caliper (19) close to the limiting hole (28).

4. The electrically powered wheelchair of claim 1, wherein, The front surface of the brake caliper (19) is provided with a plurality of ventilation grooves (31).

5. The electrically powered wheelchair of claim 1, wherein, The upper surface of the bottom frame (11) is welded with seat frames (32) at four corners, the inner side wall of the seat frame (32) is fixedly connected with a driving motor (34) through a connecting frame (33) at the rear part, the output end of the driving motor (34) is fixedly connected with a driving wheel (35), the outer side wall of the wheel shaft (14) is fixedly connected with a driven wheel (36) on the side close to the driving wheel (35), and the outer side wall of the driving wheel (35) is rotatably connected to the outer side wall of the driven wheel (36) through a toothed belt (37).

6. The electrically powered wheelchair of claim 5, wherein, The upper surface of the seat frame (32) is hingedly connected with a cushion frame (38) at the front part, the two sides of the cushion frame (38) are welded with armrest frames (39), the upper surface of one of the armrest frames (39) is provided with a controller (40) at the front part, and the input end of the driving motor (34) is electrically connected to the output end of the controller (40).

7. The electrically powered wheelchair of claim 1, wherein, The lower surface of the bottom frame (11) is provided with universal wheels (41) at the front parts of the two sides.

8. The electrically powered wheelchair of claim 6, wherein, The upper surface of the cushion frame (38) is hingedly connected with a backrest frame (42) at the rear part, and the rear surface of the seat frame (32) is hingedly connected with a leg support frame (43) at the top.

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