CN108478344B - Multifunctional wheelchair - Google Patents

Abstract

The invention discloses a multifunctional wheelchair, which comprises a seat cushion, a footrest, a backrest and a supporting assembly. 1. The first adjustment mechanism and the second adjustment mechanism for flattening the backrest. The support assembly is provided with a rotation mechanism that drives the seat cushion to rotate. The rotation mechanism is provided with a connection with the seat cushion to drive the The lifting mechanism for the up-and-down reciprocating movement of the seat cushion; also includes an auxiliary support for assisting in supporting the wheelchair. The invention provides a multifunctional wheelchair with compact structure and convenient use, which has diversified functions, integrates the functions of flattening the backrest and pedals, lifting and rotating the seat cushion, and satisfies the needs of passengers who can complete the operation alone. The convenience of use is improved.

Description

multipurpose wheelchair

technical field

The present invention relates to the technical field of wheelchairs, more specifically, it relates to multifunctional wheelchairs.

Background technique

A wheelchair is an auxiliary device for assisting a patient or a disabled person to walk and recover. Usually divided into: ordinary wheelchairs, high-back wheelchairs, sports wheelchairs, standing wheelchairs, toilet wheelchairs, etc. Most of the current wheelchairs are hand-push wheelchairs, which have a single function and a relatively complicated structure. Many disabled people need a caregiver, which increases the burden on the family and makes passengers feel like a burden to the family, which is not conducive to the rehabilitation of patients.

Contents of the invention

The technical problem to be solved by the present invention is to provide a compact and easy-to-use multi-functional wheelchair for the above-mentioned deficiencies of the prior art. , to meet the needs of passengers to complete the operation alone, greatly improving the convenience of use.

The technical solution of the present invention is as follows: a multi-functional wheelchair includes a seat cushion, a footrest, a backrest and a support assembly, the seat cushion is respectively connected with the footrest and the backrest, and the seat cushion is respectively provided with The first adjustment mechanism and the second adjustment mechanism for adjusting the pedals and backrest flattening, the support assembly is provided with a rotation mechanism that drives the seat cushion to rotate, and the rotation mechanism is provided with the The seat cushion is connected to drive the lifting mechanism of the seat cushion to reciprocate up and down; it also includes an auxiliary support for assisting in supporting the wheelchair.

As a further improvement, the support assembly includes a support frame, two support wheels, and a first motor and a second motor that respectively drive the two support wheels to rotate, and the two support wheels communicate with the support frame through a support shaft connected, the first motor and the second motor are respectively connected with the support wheel through a gear transmission mechanism.

Further, the auxiliary support includes two pairs of auxiliary rollers located at the front and rear ends of the two support wheels, and the two auxiliary rollers arranged on the same side as any of the support wheels are connected to the support frame through a connecting frame , each of the auxiliary rollers is provided with a rotating member connected with the connecting frame.

Further, the rotating mechanism includes a rotating motor, a pinion and a large gear meshed with the pinion, the pinion is connected to the output end of the rotating motor, and the lifting mechanism is installed on the On the bull gear, a positioning component is also arranged on the bull gear.

Further, the positioning assembly includes a positioning shaft inserted into the center of the large gear, a deep groove ball bearing sleeved on the positioning shaft, located on the upper and lower sides of the large gear and sleeved on the positioning shaft. A pair of thrust bearings on the shaft and a mounting seat connected to the support frame, a pair of sleeves are provided on the upper and lower sides of the deep groove ball bearing, and the positioning shaft is locked on the on the mount.

Further, the positioning shaft has a stepped structure, including a connecting portion, a locking portion, a first mounting portion, a second mounting portion, and a threaded portion arranged sequentially from top to bottom, and the upper side of the large gear is The thrust bearing is sleeved on the first installation part, the deep groove ball bearing and the sleeve are respectively sleeved on the second installation part, and the lock nut is screwed on the threaded part On the connecting part, a guide rod connected with the cushion is movably inserted.

Further, the lifting mechanism is a scissor jack, comprising four articulated rods connected sequentially and bases, support seats, screw sleeves and guide seats respectively located at the hinges of the four articulated rods, the base and The support seat is arranged oppositely, the screw sleeve and the guide seat are arranged oppositely, the support seat is connected with the seat cushion, and the base is connected with the large gear; it also includes passing through the guide seat and rotating The screw rod connected to the screw sleeve and the lifting motor that drives the screw rod to rotate.

Further, the first adjustment mechanism is an electric push rod structure, including a screw, a nut and an adjustment motor, the output end of the adjustment motor is connected to the nut through a gear reduction mechanism, and the gear The reduction mechanism and the casing wrapped by the nut, the two ends of the nut are provided with rolling bearings connected with the casing, the screw rod is inserted into the casing and connected with the nut by screwing, and One side of the housing is provided with a guide cylinder connected with the screw rod, the guide cylinder is provided with a first hinge seat hingedly connected with the seat cushion, and correspondingly, the pedal is provided with a A second hinge seat hingedly connected to the end of the screw rod.

Further, brakes are respectively provided on both sides of the support frame, and the brakes include a brake lever arranged horizontally corresponding to the position of the support wheel and a brake lever arranged obliquely above the brake lever, and the brake lever The junction with the brake lever is hingedly connected with the support frame through pins.

Further, the middle part of the backrest is provided with an armrest, and the top of the backrest is provided with a pillow. The armrests are hingedly installed on both sides of the backrest, and a limit mechanism is provided at the hinge between the armrest and the backrest. The said headrest is telescopically installed on the said backrest.

Beneficial effect

Compared with the prior art, the present invention has the following advantages:

The invention provides a compact and easy-to-use multifunctional wheelchair, which can adjust the height of passengers with tables of various heights. The height is the same, so that passengers can go to bed by themselves, reducing the workload of caregivers. Its functions are diversified, integrating the functions of flattening the backrest and pedals, lifting and rotating the seat cushion, and satisfying the needs of passengers who can complete the operation alone. demand, greatly improving the convenience of use and reducing production costs.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the present invention;

Fig. 2 is the enlarged schematic view of the structure of the support assembly and the auxiliary support in the present invention;

Fig. 3 is a schematic diagram of the right view structure in Fig. 2;

Fig. 4 is the enlarged schematic view of the structure of the lifting mechanism in the present invention;

Fig. 5 is the enlarged schematic diagram of the structure of the first adjusting mechanism in the present invention;

Fig. 6 is the enlarged schematic diagram of the structure of the rotating mechanism in the present invention;

Fig. 7 is the enlarged schematic view of the structure of the positioning shaft in the present invention;

Fig. 8 is an enlarged schematic view of the structure of the brake in the present invention.

Among them: 1-seat cushion, 2-pedal, 3-backrest, 4-support assembly, 5-first adjustment mechanism, 6-rotation mechanism, 7-lifting mechanism, 8-auxiliary support, 9-brake, 10-armrest , 11-pillow, 41-support frame, 42-support wheel, 43-first motor, 44-second motor, 45-support shaft, 46-gear transmission mechanism, 51-screw, 52-nut, 53-adjustment Motor, 54-gear reduction mechanism, 55-housing, 56-rolling bearing, 57-guiding cylinder, 58-first hinged seat, 59-second hinged seat, 61-rotary motor, 62-pinion, 63-big gear , 64-positioning shaft, 65-deep groove ball bearing, 66-thrust bearing, 67-installation seat, 68-sleeve, 69-lock nut, 71-hinge rod, 72-base, 73-support seat, 74- Screw sleeve, 75-guiding seat, 76-screw, 77-lifting motor, 81-auxiliary roller, 82-connecting frame, 83-rotating member, 91-brake lever, 92-brake lever, 93-pin, 641-connection Part, 642-lock part, 643-first installation part, 644-second installation part, 645-thread part, 646-positioning rod.

Detailed ways

The present invention will be further described below in conjunction with the specific embodiments in the accompanying drawings.

Referring to Figures 1-8, a multifunctional wheelchair of the present invention includes a seat cushion 1, a footrest 2, a backrest 3 and a support assembly 4, wherein the seat cushion 1 is hingedly connected with the footrest 2 and the backrest 3 respectively to form a seat, and Below the seat cushion 1, there are respectively a first adjustment mechanism 5 and a second adjustment mechanism for adjusting the pedal 2 and the backrest 3 to be flattened. 1 are flush with each other to form a bed, and the supporting assembly 4 is provided with a rotating mechanism 6 that drives the seat cushion 1 to rotate, so that the seat cushion 1 can rotate in situ so that passengers can adjust different angles. 1 is connected to drive the lifting mechanism 7 of the seat cushion 1 to reciprocate up and down, and adjust the height of the seat cushion 1 so as to be used with beds of various heights; the wheelchair also includes an auxiliary support 8 for auxiliary support of the wheelchair, which serves as an auxiliary support and guide role. The present invention provides a compact and easy-to-use multifunctional wheelchair, which can enable passengers to adjust their height with tables of various heights, and at the same time, the backrest 3 and footrest 2 can be flattened and cooperate with the function of the lifting mechanism 7, which can make The height of the wheelchair and the bed is the same, so that passengers can get on the bed by themselves, which reduces the workload of the caretaker. One person can complete the operation, which greatly improves the convenience of use.

Preferably, the support assembly 4 includes a support frame 41, two support wheels 42 and a first motor 43 and a second motor 44 that respectively drive the two support wheels 42 to rotate, and the two support wheels 42 are connected to the support frame 41 through a support shaft 45 , the first motor 43 and the second motor 44 are respectively connected to the support wheel 42 through the gear transmission mechanism 46, and the two motors are respectively used to drive the two support wheels 42, the power is more sufficient, and some complex terrains can be overcome. The rotation speed can control the steering of the wheelchair, and the steering is more stable and more controllable. The auxiliary support member 8 includes two pairs of auxiliary rollers 81 positioned at the front and rear ends of the two supporting wheels 42, and the two auxiliary rollers 81 arranged on the same side as any supporting wheel 42 are connected with the support frame 41 through a connecting frame 82, and each auxiliary roller 81 Rotating parts 83 are arranged on the top and connected with the connecting frame 82, so that the auxiliary roller 81 becomes a universal wheel, which plays the role of guiding while playing auxiliary support.

Preferably, its rotating mechanism 6 includes a rotating motor 61, a pinion 62 and a large gear 63 meshed with the small gear 62, wherein the pinion 62 is connected to the output end of the rotating motor 61, and the lifting mechanism 7 is installed on the large gear 63 Above, with the rotation of the large gear 63, a positioning assembly is also provided on the large gear 63. The positioning assembly includes a positioning shaft 64 inserted in the center of the large gear 63, and a deep groove ball bearing sleeved on the positioning shaft 64. 65. A pair of thrust bearings 66 located on the upper and lower sides of the large gear 63 and sleeved on the positioning shaft 64 and the mounting seat 67 connected to the support frame 41, and a pair of sleeves 68 are also arranged on the upper and lower sides of the deep groove ball bearing 65 , the positioning shaft 64 is locked on the mounting seat 67 by the locking nut 69, the outer ring of the deep groove ball bearing 65 is connected with the bull gear 63, and the bull gear 63 rotates, and the seat cushion 1 is driven by the elevating mechanism 7 to rotate. Furthermore, the positioning shaft 64 is a stepped structure, including a connecting portion 641, a locking portion 642, a first mounting portion 643, a second mounting portion 644, and a threaded portion 645 arranged in sequence from top to bottom, wherein the large gear The thrust bearing 66 on the upper side of 63 is sleeved on the first mounting part 643, the outer ring of the thrust bearing 66 on the lower side of the large gear 63 is plugged into the mounting seat 67, and the deep groove ball bearing 65 and the sleeve 68 are respectively sleeved on the The second mounting part 644, the locking nut 69 is screwed on the threaded part 645, so that the large gear 63 can rotate in the horizontal position, the positioning shaft 64 is fixed on the support frame 41, and the connecting part 641 is movably inserted with The positioning rod 646 connected to the seat cushion 1, when the elevating mechanism 7 works, the positioning rod 646 reciprocates up and down to play a guiding role.

Preferably, the lifting mechanism 7 is a scissor jack, comprising four articulated rods 71 successively articulated, and a base 72, a support seat 73, a screw sleeve 74 and a guide seat 75 respectively located at the joints of the four articulated rods 71, wherein the base 72 and support seat 73 are relatively arranged, and screw sleeve 74 and guide seat 75 are arranged oppositely, and support seat 73 links to each other with cushion 1, and base 72 links to each other with bull gear 63; The screw rod 76 on the cover 74 and the lifting motor 77 that drives the screw rod 76 to rotate, the lifting motor 77 works, drives the screw rod 76 to rotate, the screw sleeve 74 is axially displaced along the screw rod 76, and adjusts the relative distance between the base 72 and the support seat 73 to achieve The purpose of adjusting the height of the cushion 1.

Preferably, the first adjustment mechanism 5 is an electric push rod structure, including a screw rod 51, a nut 52 and an adjustment motor 53, wherein the output end of the adjustment motor 53 is connected to the nut 52 through a gear reduction mechanism 54, and the nut 52 is inserted into the On the gear, the first adjustment mechanism 5 also includes a housing 55 that wraps the gear reduction mechanism 54 and the nut 52. Rolling bearings 56 connected to the housing 55 are provided at both ends of the nut 52, and the screw rod 51 is plugged into the housing 55. It is connected with the nut 52 by screwing, and a guide cylinder 57 connected to the screw rod 51 is provided on one side of the housing 55, and a first hinged seat 58 connected to the seat cushion 1 is provided on the guide cylinder 57. Correspondingly, The pedal 2 is provided with a second hinged seat 59 that is hingedly connected to the end of the screw rod 51. The adjustment motor 53 works to drive the nut 52 to rotate, and the screw rod 51 is axially displaced to push the second hinged seat 59 to displace, thereby making the foot Step 2 is flattened, and similarly, the second adjustment mechanism and the first adjustment mechanism 5 are the structures of electric push rods, and the same principle is used to adjust the backrest 3 to be flattened.

Brakes 9 are also respectively arranged on both sides of the support frame 41, and the brakes 9 include a brake lever 91 arranged horizontally corresponding to the position of the support wheel 42 and a brake lever 92 arranged obliquely above the brake lever 91. The junction with the brake lever 92 is hingedly connected with the support frame 41 through the pin 93, and the swing brake lever 92 makes the brake lever 91 contact with the support wheel 42 to achieve the purpose of braking and ensure the safety of the wheelchair; There is an armrest 10, and a headrest 11 is also provided on the top of the backrest 3, wherein the armrest 10 is hingedly installed on both sides of the backrest 3, and a limit mechanism is provided at the hinge of the armrest 10 and the backrest 3, and the limit mechanism can be placed on the armrest 10. Backrest 3 edge of lower side is provided with limit pin, and its headrest 11 is telescopically installed on the backrest 3, so that it is suitable for different crowds to use. The invention has the characteristics of light weight and low cost.

What is described above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, under the premise of not departing from the structure of the present invention, some deformations and improvements can also be made, and these will not affect the implementation of the present invention effect and utility of patents.

Claims (4)

1. A multifunctional wheelchair, comprising a seat cushion (1), a footrest (2), a backrest (3) and a support assembly (4), characterized in that the seat cushion (1) is connected to the footrest ( 2), the backrest (3) is hingedly connected, and the first adjustment mechanism (5) and the second adjustment mechanism for adjusting the flattening of the pedal (2) and the backrest (3) are respectively provided under the seat cushion (1), The supporting assembly (4) is provided with a rotating mechanism (6) that drives the seat cushion (1) to rotate, and the rotating mechanism (6) is provided with a connecting mechanism (6) to drive the seat cushion (1) The lifting mechanism (7) for the up and down reciprocating movement of the seat cushion (1); also includes an auxiliary support (8) for assisting in supporting the wheelchair, and the support assembly (4) includes a support frame (41) and two support wheels (42 ) and the first motor (43) and the second motor (44) that respectively drive the two support wheels (42) to rotate, and the two support wheels (42) connect with the support frame ( 41), the first motor (43) and the second motor (44) are respectively connected to the support wheel (42) through the gear transmission mechanism (46), and the rotation mechanism (6) includes a rotation motor (61), a pinion (62) and a large gear (63) meshed with the pinion (62), the pinion (62) is connected to the output end of the rotating motor (61), and the The lifting mechanism (7) is installed on the big gear (63), and the big gear (63) is also provided with a positioning assembly, and the positioning assembly includes a The positioning shaft (64), the deep groove ball bearing (65) sleeved on the positioning shaft (64), the upper and lower sides of the big gear (63) and sleeved on the positioning shaft (64) A pair of thrust bearings (66) and a mounting seat (67) connected to the support frame (41), and a pair of sleeves (68) are provided on the upper and lower sides of the deep groove ball bearing (65). The positioning shaft (64) is locked on the mounting seat (67) through the lock nut (69). The positioning shaft (64) is a stepped structure, including connecting parts arranged sequentially from top to bottom ( 641), clamping portion (642), first mounting portion (643), second mounting portion (644), threaded portion (645), the thrust bearing (66) located on the upper side of the large gear (63) is sleeved On the first installation part (643), the deep groove ball bearing (65) and the sleeve (68) are respectively sleeved on the second installation part (644), and the lock nut (69) is screwed on the threaded part (645), and the positioning rod (646) connected with the cushion (1) is movably plugged into the connecting part (641); the first adjustment The mechanism (5) is a structure of an electric push rod, including a screw rod (51), a nut (52) and an adjusting motor (53), and the output end of the adjusting motor (53) communicates with the described The nut (52) is connected, and it also includes a casing (55) that wraps the gear reduction mechanism (54) and the nut (52). Both ends of the nut (52) are provided with Rolling bearings (56), the screw rod (51) is plugged into the housing (55) and screwed to the nut (52), and on one side of the housing (55) A guide cylinder (57) connected to the screw rod (51) is provided, and the guide cylinder (57) is provided with a first hinge seat (58) hingedly connected with the seat cushion (1). Correspondingly, The pedal (2) is provided with a second hinge seat (59) hingedly connected to the end of the screw rod (51), and brakes (9) are provided on both sides of the support frame (41). ), the brake (9) includes a horizontally arranged brake lever (91) corresponding to the position of the support wheel (42) and a brake lever (92) obliquely arranged above the brake lever (91), the brake The joint between the rod (91) and the brake rod (92) is hingedly connected to the support frame (41) through a pin (93). 2. The multifunctional wheelchair according to claim 1, characterized in that, the auxiliary support (8) includes two pairs of auxiliary rollers (81) located at the front and rear ends of the two support wheels (42), and any Two auxiliary rollers (81) arranged on the same side of the support wheel (42) are connected to the support frame (41) through the connecting frame (82), each of the auxiliary rollers (81) is equipped with a rotating The piece (83) is connected with the connecting frame (82). 3. The multifunctional wheelchair according to claim 1, characterized in that, the lifting mechanism (7) is a scissor jack, comprising four hinged rods (71) which are successively hinged and connected, and four hinged rods (71) The base (72), support seat (73), screw sleeve (74) and guide seat (75) at the hinge of the rod (71), the base (72) and the support seat (73) are arranged oppositely, and the screw The sleeve (74) is arranged opposite to the guide seat (75), the support seat (73) is connected with the cushion (1), the base (72) is connected with the large gear (63); It includes a screw rod (76) passing through the guide seat (75) and screwed on the screw sleeve (74), and a lifting motor (77) driving the screw rod (76) to rotate. 4. The multifunctional wheelchair according to claim 1, characterized in that, the middle part of the backrest (3) is provided with an armrest (10), the top of the backrest (3) is provided with a pillow (11), and the The armrest (10) is hingedly installed on both sides of the backrest (3), and a limit mechanism is provided at the hinge of the armrest (10) and the backrest (3), and the pillow (11) is telescopically installed on the backrest (3). above the backrest (3).