CN215307532U

CN215307532U - Novel anti-falling walking-aid chair

Info

Publication number: CN215307532U
Application number: CN202121880166.9U
Authority: CN
Inventors: 耿兴华; 邹彬泽; 王子路; 景连齐; 菅奕; 钱希兴
Original assignee: Dalian University of Technology
Current assignee: Dalian University of Technology
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2021-12-28
Anticipated expiration: 2031-08-12

Abstract

The utility model belongs to the field of nursing equipment, and provides a novel anti-falling walking chair which comprises an integral structure frame, a foldable chair back, armrests and front wheels with an emergency stop and anti-falling function. The wheelchair is provided with a first multifunctional component, a second multifunctional component and a third functional component respectively, the back rest plate, the seat bottom plate and the leg rest plate can be folded into an approximate plane through screw transmission so as to be convenient to store, the back rest plate, the seat plate and the leg rest plate can also be unfolded into a deck chair shape, and the wheelchair further comprises a rubber pad arranged at the integral end part and a sponge sleeve arranged at the armrest part so as to improve the use comfort of a user. The device is simple in structure and convenient to operate, protects a user more comprehensively, avoids injury to the user caused by falling of unstable gravity center, and is added with a function of facilitating real-time rest of the user by the foldable seat.

Description

Novel anti-falling walking-aid chair

Technical Field

The utility model belongs to the technical field of nursing, and particularly relates to a novel anti-falling walking chair.

Background

With the aggravation of the aging of China, the use of the walking aid appliance is more and more common. The walking aid is a safe walking device for special people with inconvenient legs and feet, and the walking aid is not only a tool for special people to ride instead of walk, but also a tool for normal life and social activities of the special people by means of the walking aid.

These people are unable to match leg movements to their own center of gravity shifts while walking because of the reduced muscle strength of the legs. Is easy to tip forward when the ground is wet and slippery and meets an emergency, and is easy to cause various problems such as fracture, cerebral hemorrhage and the like.

Most of the existing walking aids are supporting walking aids. Including crutches, ordinary mobility aids, ordinary wheelchairs, electric wheelchairs and the like, although related products are various, most products have major defects in functionality:

1. the common crutch, although occupying a small space, cannot provide effective supporting and walking assisting functions for users with weak mobility.

2. The common walking aid has single function, the seat needs to be temporarily installed, the sizes of most common walking aids are smaller, and the walking aids are easy to fall down when encountering obstacles.

3. The common wheelchair only has a riding function, and for a walking user, the wheelchair is used as an assisting tool and needs to be pushed at the rear side of the wheelchair, and the wheelchair is inconvenient to carry if being folded, so that the wheelchair is not an effective assisting and assisting tool in practice.

4. The electric wheelchair has certain danger for the old who has slow reaction because of the great operation difficulty.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel anti-falling walking-aid chair, which aims to solve the problems in the prior art.

The unfolding and the recovery of the chair for resting of the user can be realized by using a simple mechanical structure as much as possible. By designing the transmission mechanism, the product can be automatically controlled under the driving of a low-power motor; by designing the bearing structure, the product is as light as possible on the premise of ensuring the safety of the product; the anti-skid emergency stop system is designed to prevent a user from falling down due to the unstable structure of the walking aid when the user walks with the aid of the walking aid; the utility model provides a novel anti-falling walking-aid chair which is easy to process, low in cost, simple and convenient to operate and wide in application range.

A novel anti-falling walk-assisting chair realizes the functions of folding the chair for a user to lie and rest, assisting the user with both hands when the user walks and stopping suddenly when the user is unstable; the emergency stop device comprises an integral structure frame 1, a transmission connecting plate 2, a back backup plate 3, a riding plate 4, a leg backup plate 5, a supporting rear wheel 6, an emergency stop front wheel 7, a transmission screw rod 8 and a handrail 9; the back backup plate 3, the sitting plate 4 and the leg backup plate 5 are in an N shape when being contracted; the integral structure frame 1 is a main body structure of the seat and is divided into a seat back, a seat surface and an external frame; the chair back is positioned in the external frame, and a fixed long shaft 31 is arranged on the chair back; through grooves are formed in two sides of the back backup plate 3, one end of the back backup plate is fixed on the fixed long shaft 31, and the other end of the back backup plate is connected with one end of the transmission connecting plate 2 through a first transmission short shaft 41; the other end of the transmission connecting plate 2 is connected with a transmission plate 44 through a second transmission short shaft 43; the transmission plate 44 is connected with the leg rest plate 5 through a third transmission short shaft 51; the seat surface is a seat plate 4, the side surface of the seat plate 4 is provided with a sliding groove, a second transmission short shaft 43 is positioned in the sliding groove of the seat plate 4 to slide, one end of the seat plate 4 is connected with the leg backup plate 5 through a hinge, the other end of the seat plate 4 is connected with a first transmission rod 33 through a first hinge 35, and the first transmission rod 33 is fixed on an external frame through a symmetrical short shaft 34; the second support frame 12 and the third support frame 13 below the chair surface are used for mounting a guide rail slide block transmission device 10, and a transmission screw rod 8 is mounted in the guide rail slide block transmission device 10; the slide block on the transmission screw 8 is sleeved on the transmission long shaft 32, and two ends of the transmission long shaft 32 are fixedly connected with the riding plate 4 through the through groove on the back backup plate 3; the slide block on the transmission screw rod 8 drives the transmission long shaft 32 to move in a translation manner, so that the back backup plate 3 rotates around the fixed long shaft 31, the riding plate 4 rotates around the transmission long shaft 32, the first transmission rod 33 rotates around the symmetrical short shaft 34, and the riding plate 4 is further caused to rotate; under the combined action of the first transmission short shaft 41 and the second transmission short shaft 43, the transmission connecting plate 2 rotates, and further the transmission plate 44 rotates; the supporting rear wheels 6 and the emergency stop front wheels 7 are arranged at the bottom of the walking-aid chair, and the supporting rear wheels 6 are rubber wheels, so that the buffering performance is improved.

The emergency stop front wheel 7 is also provided with an emergency stop device, and the emergency stop device comprises a spring 71, a second transmission rod 72, a third transmission rod 73 and a brake rod 74; one end of the third transmission rod 73 is hinged with the first support frame 11, the other end of the third transmission rod is hinged with one end of the second transmission rod 72, and the other end of the second transmission rod 72 is hinged with the emergency stop front wheel 7; one end of the spring 71 is connected to the integral structure frame 1, and the other end is connected to the junction of the second transmission rod 72 and the third transmission rod 73; the brake lever 74 is positioned on the side of the sudden stop front wheel 7;

the spring 71 determines the installation position through mechanical calculation, when a user has a tendency of forward leaning and falling, the force of obliquely pressing the armrest downwards is large enough, the spring 71 is in a stretching state, the second transmission rod 72 and the third transmission rod 73 respectively rotate along the hinge, and the brake lever 74 vertically moves downwards until contacting with the ground; the whole stability of the walking aid is realized, the emergency stop mechanism is self-locked in a stable state, the walking aid cannot be automatically bounced to recover the walking state, when a user vertically and upwards lifts the walking aid with small force, the spring immediately contracts, the emergency stop rod is lifted, and the change between the walking state of the front wheel and the emergency stop state is realized; the brake lever 74 is mounted with a rubber pad at the ground engaging end.

The integral structure frame 1 is connected with a corresponding mechanism at the connection part of the structure frame through a connecting lifting lug; rubber pads are arranged at each end part of the integral structure frame 1; the integral structure frame 1 and the armrests 9 are sleeved with armrest sleeves, and the armrest sleeves are mainly made of sponge materials.

Back cushion is installed on back backup plate 3, takes the board 4 to go up the installation and takes the cushion, and shank backup plate 5 installation shank cushion, back cushion, take cushion and shank cushion all mainly comprise inside hard board and outside foam-rubber cushion, improve the comfort level.

Compared with the prior art, the utility model has the beneficial effects that:

this novel prevent falling helps capable chair both can very effectual realization to assist in supporting to help the function, can take the rest again, and two kinds of forms realize automatic the transform through the mechanism, and the user can promote by oneself, compares other current products, and the function is more, and it is more convenient to use.

This novel prevent falling and help preventing of chair fall functional module has designed the variable radius pulley that can bounce open, can stabilize whole structure when helping the capable ware to meet with the barrier or special topography will be out of control, guarantees user's safety.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a perspective view of a novel crash-proof walker chair according to an embodiment of the present invention.

FIG. 2 is a front view of the novel crash-proof walker chair of the present invention.

FIG. 3 is a top view of the novel anti-fall walker chair of the present invention.

In the figure: 1, an integral structure frame, 2, a transmission connecting plate, 3, a back backup plate, 4 sitting plates and 5, a leg backup plate; 6 supporting the rear wheel; 7, suddenly stopping the front wheel; the device comprises 8 transmission lead screws, 9 handrails, 10 guide rail slide block transmission devices, 11 first support frames, 12 second support frames, 13 third support frames, 31 fixed long shafts, 32 transmission long shafts, 33 first transmission rods, 34 symmetrical short shafts, 35 first hinges, 41 first transmission short shafts, 42 second hinges, 43 second transmission short shafts, 44 transmission plates, 51 third transmission short shafts, 71 springs, 72 second transmission rods, 73 third transmission rods and 74 brake rods.

Detailed Description

The technical solutions of the present invention will be further described below with reference to the accompanying drawings and specific embodiments, and it should be noted that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the embodiment of the utility model, the novel anti-falling walking-aid chair comprises an integral structure frame 1, a transmission connecting plate 2, a back backup plate 3, a sitting plate 4, a leg backup plate 5, a supporting rear wheel 6, an emergency stop front wheel 7, a transmission screw 8 and armrests 9; specifically, the first function of the embodiment of the present invention is divided into three parts, the first part is a folding seat, and the back backup plate 3 rotates around the fixed long shaft 31; when the seat is folded, the transmission long shaft 32 connected with the transmission screw rod 8 through the sliding block moves towards the right side, and the back backup plate 3 rotates anticlockwise around the fixed long shaft 31 by means of the movement of the transmission long shaft 32 until the seat is approximately vertical. The first transfer lever 33 is rotated by a first hinge 35 connected to the ride-on plate 4 about a short axis of symmetry 34 connected to the integrated structural frame 1 until it approaches a vertical position. The back backup plate 3 is provided with a through groove, so that the back backup plate can rotate around the fixed long shaft 31 and can translate with the horizontal shaft; the main function of the first transmission rod 33 is to maintain the motion stability of the integral folding mechanism, which has a strict position relation with the back backup plate 3 along the horizontal axis direction, and ensure the feasibility of motion. The flexible material is added between the back backup plates 3, so that the safety and the comfort of a user are improved, and the rigid structural rod is prevented from interfering with other parts of the device. The seat board 4 rotates clockwise about the first transmission stub 41 and the second hinge 42 until approaching the vertical state when the seat is folded up by the first transmission stub 41. The riding board 4 is provided with a through groove, so that the second transmission short shaft 43 moves along the riding board 4, and the transmission connecting plate 2 and the transmission plate 44 respectively rotate under the action of the second transmission short shaft 43. The leg rest 5 rotates counterclockwise about the third drive stub 51 until approaching a vertical state when the seat is folded under the action of the third drive stub 51 and the hinge 42 connected to the seating plate.

The second part is an emergency stop antiskid device, when the user leans forward during emergency stop, the spring 71 is stretched by tension, the second transmission rod 72 and the third transmission rod 73 respectively rotate along the hinge, and the brake rod 74 moves vertically downwards until contacting with the ground. When the spring 71 is in a stretching state, the brake lever 74 is in contact with the ground, the mechanism is in a self-locking state, and the mechanism does not automatically return due to the reduction or disappearance of the downward force action in the inclined direction. The fixed position and the elastic coefficient of the spring 71 have strict requirements, so that the self-locking performance is ensured, and a user can release the self-locking state of the mechanism by using smaller vertical or oblique upward force to recover the walking state. The rubber pad is arranged at the contact end of the brake lever 74 and the ground, so that the friction force between the brake lever 74 and the ground is increased, the shock absorption and buffering effects are achieved, the comfort of a user is improved, and the abrasion of the brake lever 74 and the whole mechanism is reduced.

The third part is the function of assisting the user to walk, and the body of the user is positioned in the middle of the integral structure frames 1 at the two sides and holds the handrail 9 with the hand in the walking process. In the integral structure frame 1, the first support frame 11 plays a role in increasing the mechanical stability of the integral structure and is connected with the emergency stop front wheel 7. The second support frame 12 and the third support frame 13 are used for mounting the guide rail sliding block transmission device 10. The other support frames of the integral structure frame 1 not only meet the necessary mechanical property requirements, but also are provided with a transmission shaft and wheels. The handrail 9 is provided with the sponge sleeve, and each end of the integral structure frame 1 is provided with the rubber pad, so that the use comfort and the safety of a user are improved.

The motor drives the transmission screw rod 8 to rotate so as to drive the sliding block to translate on the linear guide rail, and the special metal sheet is connected with the sliding block 10 and the long transmission shaft 32, so that the translation of the long transmission shaft 32 is realized, and finally the seat plate is driven to fold.

The working principle of the utility model is as follows:

the user passes through motor switch and folds the seat part to suitable position after, stands in the middle of helping capable ware overall structure frame 1, and handrail 9 is held to both hands, can normally have the walking of protectiveness, when meetting the barrier, the health slightly leans forward and triggers scram mechanism, prevents to tumble, when stopping the rest, expandes the seat board in the folding through motor switch to rest.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to or changed within the scope of the present invention.

Claims

1. A novel anti-falling walking chair is characterized by comprising an integral structure frame (1), a transmission connecting plate (2), a back rest plate (3), a sitting plate (4), a leg rest plate (5), a supporting rear wheel (6), an emergency stop front wheel (7), a transmission lead screw (8) and a handrail (9); the back rest plate (3), the sitting plate (4) and the leg rest plate (5) are in an N shape when being contracted; the integral structure frame (1) is a main body structure of the seat and is divided into a seat back, a seat surface and an external frame; the chair back is positioned in the external frame, and a fixed long shaft (31) is arranged on the chair back; through grooves are formed in two sides of the back backup plate (3), one end of the back backup plate is fixed on the fixed long shaft (31), and the other end of the back backup plate is connected with one end of the transmission connecting plate (2) through a first transmission short shaft (41); the other end of the transmission connecting plate (2) is connected with a transmission plate (44) through a second transmission short shaft (43); the transmission plate (44) is connected with the leg backup plate (5) through a third transmission short shaft (51); the seat surface is a sitting plate (4), a sliding groove is formed in the side surface of the sitting plate (4), a second transmission short shaft (43) is located in the sliding groove of the sitting plate (4) to slide, one end of the sitting plate (4) is connected with the leg backup plate (5) through a hinge, the other end of the sitting plate (4) is connected with a first transmission rod (33) through a first hinge (35), and the first transmission rod (33) is fixed on the external frame through a symmetrical short shaft (34); a second support frame (12) and a third support frame (13) below the chair surface are used for mounting a guide rail slide block transmission device (10), and a transmission screw rod (8) is mounted in the guide rail slide block transmission device (10); the slide block on the transmission screw rod (8) is sleeved on the transmission long shaft (32), and two ends of the transmission long shaft (32) are fixedly connected with the riding plate (4) through the through groove on the back backup plate (3); a sliding block on the transmission screw rod (8) drives a transmission long shaft (32) to move in a translation manner, so that the back backup plate (3) rotates around the fixed long shaft (31), the sitting plate (4) rotates around the transmission long shaft (32), and the first transmission rod (33) rotates around the symmetrical short shaft (34), thereby causing the sitting plate (4) to rotate; under the combined action of the first transmission short shaft (41) and the second transmission short shaft (43), the transmission connecting plate (2) rotates, and then the transmission plate (44) rotates; the supporting rear wheels (6) and the emergency stop front wheels (7) are arranged at the bottom of the walking-aid chair.

2. The novel crash-proof walking chair according to claim 1, characterized in that the front wheel (7) is further provided with a crash-stop device, the crash-stop device comprises a spring (71), a second transmission rod (72), a third transmission rod (73) and a brake rod (74); one end of a third transmission rod (73) is hinged with the first support frame (11), the other end of the third transmission rod is hinged with one end of a second transmission rod (72), and the other end of the second transmission rod (72) is hinged with the scram front wheel (7); one end of the spring (71) is connected to the integral structure frame (1), and the other end of the spring is connected to the junction of the second transmission rod (72) and the third transmission rod (73); the brake lever (74) is positioned at one side of the sudden stop front wheel (7); when the spring (71) is in a stretching state, the second transmission rod (72) and the third transmission rod (73) respectively rotate along the hinge, and the brake rod (74) vertically moves downwards until contacting with the ground; the brake rod (74) is provided with a rubber pad at the end contacted with the ground.

3. The novel crash-proof walker chair as claimed in claim 1 or 2, wherein the integral structural frame (1) is connected to the corresponding mechanism at the structural frame connection by connecting lugs; rubber pads are arranged at the end parts of the integral structure frame (1); the integral structure frame (1) and the armrests (9) are sleeved with armrest sleeves, and the armrest sleeves are mainly made of sponge materials.

4. A novel crash-proof walking chair as claimed in claim 1 or 2, wherein the back rest cushion is mounted on the back rest plate (3), the seat cushion is mounted on the seat plate (4), the leg rest cushion is mounted on the leg rest plate (5), and the back rest cushion, the seat cushion and the leg rest cushion are mainly composed of an inner hard plate and an outer sponge cushion.

5. A novel crash-proof walking chair as claimed in claim 3, wherein the back rest cushion is mounted on the back rest plate (3), the seat cushion is mounted on the seat plate (4), the leg rest cushion is mounted on the leg rest plate (5), and the back rest cushion, the seat cushion and the leg rest cushion are mainly composed of an inner hard plate and an outer sponge cushion.

6. A new fall arrest walker chair according to claims 1, 2 or 5, characterized in that the supporting rear wheels (6) are rubber wheels.

7. A new fall arrest walker chair according to claim 3 characterized in that the supporting rear wheels (6) are rubber wheels.

8. A new fall arrest walker chair according to claim 4, characterized in that the supporting rear wheels (6) are rubber wheels.