CN112089558B

CN112089558B - A fall-aided sit-up assist device for the elderly

Info

Publication number: CN112089558B
Application number: CN202010815743.XA
Authority: CN
Inventors: 袁明新; 汤雨辉; 马杰; 胥羽涛; 江亚峰; 苏政权; 宋联; 王琰; 申燚
Original assignee: Jiangsu University of Science and Technology
Current assignee: Jiangsu University of Science and Technology
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2021-09-07
Anticipated expiration: 2040-08-14
Also published as: CN112089558A

Abstract

The invention provides an assisting device for assisting the elderly to fall and sit up. Two symmetrical lifting mechanisms can help the elderly who fall and lie on the ground to raise the upper body, thereby helping the seat to be delivered to the buttocks and the back of the elderly; two A symmetrical seat back transfer mechanism realizes the support of the hips and back of the elderly, helping the elderly to change their posture from "lying on the ground" to "sitting on the ground"; the seat adopts a soft and hard combination of "chair surface + net pocket" It avoids the secondary injury that may be caused by the elderly in the process of assisted sitting on the ground; two symmetrical seat lifting mechanisms realize the lifting of the seat, helping the elderly to change their posture from "sitting on the ground" to "sitting off the ground".

Description

Old man falls supplementary booster unit of sitting up

Technical Field

The invention relates to the technical field of old people assisting instruments, in particular to an old people falling assisting sitting assisting power assisting device.

Background

Falling is the number one killer of accidental injury of old people all over the world. There is data showing that over 30 million people die of falls each year worldwide, with over half of them over 60 years of age. The fall mortality rate of the elderly rises sharply with increasing age. As is well known, China and even the world have already stepped into the aging society.

If a person falls down and fails to rise for a long time, the muscle is compressed by a fixed posture, and the muscle is dissolved. When muscles are destroyed, myoglobin in the muscles flows into blood, and after being discharged through kidneys, the myoglobin can block renal tubules to influence the functions of the kidneys, and severe people can cause acute renal failure and endanger life, which is fatal to the elderly who are at home alone. Along with the development of economy, more and more young people go out to work, and a plurality of families show the old and the young people. According to investigation, the prior market has more devices for old people to prevent falling and alarm after falling, and few automatic auxiliary sitting-up devices are available after falling. With the increasing aging of the global population, the old people falling auxiliary sitting-up device becomes an urgent need in the market in consideration of the damage of falling to the old people and the current market situation.

Disclosure of Invention

The invention aims to provide a fall-assisting sitting-up assisting device for old people, which helps the old people to quickly and effectively change the posture from lying on the ground to sitting up off the ground, and improves the self-protection effect of the old people living alone after falling down.

In order to achieve the above object, the present invention provides an old people fall-assisting sitting-up assisting device, comprising:

the movable rack comprises a vertically arranged rectangular frame and four cross rods which are respectively positioned at four corners of the rectangular frame and are perpendicular to the rectangular frame, the rectangular frame is composed of two vertical columns and two horizontal cross beams, the four cross rods are respectively a first upper cross rod, a first lower cross rod, a second upper cross rod and a second lower cross rod, the first upper cross rod and the first lower cross rod are positioned on the same vertical plane, the second upper cross rod and the second lower cross rod are positioned on the same vertical plane, the bottoms of the two columns are respectively provided with an omnidirectional wheel, the bottoms of the first lower cross rod and the second lower cross rod are respectively provided with wheels, and the tops and the bottoms of the first lower cross rod and the second lower cross rod are respectively provided with a rack and a second gear meshed with the rack;

the lifting mechanisms respectively comprise a double-shaft speed reduction direct current motor, an electromagnetic clutch, an electric push rod and an L-shaped handle, two rotating shafts of the double-shaft speed reduction direct current motor are respectively connected with the electromagnetic clutch and corresponding wheels, a first gear is sleeved on a fixed shaft of the electromagnetic clutch and meshed with the corresponding second gear, the electric push rod is arranged on the corresponding rack, and the L-shaped handle is arranged on the electric push rod;

the chair comprises a chair, wherein two sides of the chair are respectively provided with an L-shaped bracket;

the two symmetrical chair back transmission mechanisms are respectively arranged between the first upper cross rod and the first lower cross rod and between the second upper cross rod and the second lower cross rod and comprise a supporting plate, a first motor and two vertically arranged first lead screws, two ends of the supporting plate are respectively in threaded connection with one first lead screw, a second lead screw is arranged at the bottom of the supporting plate and is in threaded connection with the corresponding L-shaped support, and the second lead screw is connected with the first motor;

the seat lifting mechanisms are symmetrically arranged on the first upper cross rod and the second upper cross rod respectively, each seat lifting mechanism comprises a second motor, a third gear, a first gear set and a second gear set, each first gear set and the second gear set respectively comprise an upper gear and a lower gear which are coaxially arranged, the third gear, the upper gear of the first gear set and the upper gear of the second gear set are located on the same horizontal plane and are meshed through chains, the second motor is connected with the third gears, each fourth gear is sleeved at the top of the first screw rod, and the lower gears of the first gear sets and the lower gears of the second gear sets are meshed with the corresponding two fourth gears on the first screw rods respectively.

Optionally, a square box is arranged at the top of the first lower cross bar and the top of the second lower cross bar, and the rack is arranged in the square box.

Optionally, a handle is further arranged on the rectangular frame, and the handle deviates from the four cross rods.

Optionally, the second lead screw is in threaded connection with the corresponding L-shaped support through a nut, and limit switches are arranged on two sides of the nut.

Optionally, the seat includes seat and back, the seat with the back rotates to be connected, L shape support set up in on the seat, the back includes string bag and two baffles, the both ends of string bag are fixed respectively two on the baffle.

Optionally, the top of the baffle is provided with a roller, two the upright posts are all provided with a sliding groove, the roller is clamped into the corresponding sliding groove and can move along the sliding groove.

Optionally, the third gear, the upper gear of the first gear set and the upper gear of the second gear set are located on the same horizontal plane and arranged in a triangle.

Optionally, the method further includes:

the communication module is connected with a mobile terminal;

and the control module responds to the signal sent by the mobile terminal and controls the actions of the double-shaft deceleration direct-current motor, the first motor and the second motor.

The old man falling auxiliary sitting up power assisting device provided by the invention has the following beneficial effects:

(1) the two symmetrical lifting mechanisms can help a fallen old person lying on the ground to raise the upper half body, thereby facilitating the delivery of the seat to the buttocks and under the back of the old person; the two symmetrical chair back transmission mechanisms realize the support of the buttocks and the back of the old, and help the old to change from the posture of lying on the ground to sitting on the ground;

(2) the chair adopts a soft and hard combined bag piece of a chair surface and a net bag, so that secondary damage possibly caused in the process of assisting the old to sit on the ground is avoided;

(3) the two symmetrical seat lifting mechanisms realize the lifting of the seat, and help the old to change from sitting on the ground to sitting off the ground.

Drawings

Fig. 1 is a schematic overall structure diagram of an old people fall-assisted sitting-up assisting device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of two symmetrical lifting mechanisms provided in an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of the lifting mechanism provided in accordance with an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a seat provided in accordance with an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a chair back transmission mechanism according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a seat lifting mechanism according to an embodiment of the present invention;

wherein the reference numerals are:

11-upright post; 111-omni wheel; 12-a cross beam; 21-a first upper cross bar; 22-a first lower cross bar; 23-a second upper cross bar; 24-a second bottom rail; 25-a wheel; 31-square box; 32-a rack; 33-a second gear; 34-a dual-shaft speed-reducing direct current motor; 35-an electromagnetic clutch; 36-an electric push rod; a 37-L shaped handle; 38-a first gear; 41-a support plate; 42-a first motor; 43-a first screw rod; 44-a second lead screw; 45-a nut; 46-limit switch; 51-a seat surface; 52-backrest; a 53-L shaped bracket; 54-a net bag; 55-a baffle plate; 56-a roller; 57-chute; 61-a second motor; 62-a third gear; 63-a first gear set; 64-a second gear set; 65-a fourth gear; 66-chain.

Detailed Description

The following describes in more detail embodiments of the present invention with reference to the schematic drawings. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

As shown in fig. 1 to 6, the present embodiment provides an old people fall-down assisting sitting-up assisting device, which includes a moving frame, two symmetrical lifting mechanisms, a seat, two symmetrical seat back transmission mechanisms, and two symmetrical seat lifting mechanisms.

Specifically, the movable rack comprises a vertically arranged rectangular frame and four cross rods which are respectively positioned at four corners of the rectangular frame and are perpendicular to the rectangular frame, and the rectangular frame is composed of two vertical upright posts 11 and two horizontal cross beams 12. The four cross rods are perpendicular to the rectangular frame and are respectively positioned at four corners of the rectangular frame, and the four cross rods are arranged in parallel. The four cross bars are respectively a first upper cross bar 21, a first lower cross bar 22, a second upper cross bar 23 and a second lower cross bar 24, wherein the first upper cross bar 21 and the first lower cross bar 22 are located on the same vertical plane, the second upper cross bar 23 and the second lower cross bar 24 are located on the same vertical plane, the heights of the first upper cross bar 21 and the second upper cross bar 23 are the same, and the heights of the first lower cross bar 22 and the second lower cross bar 24 are the same. The bottom of each of the two columns 11 is provided with an omni wheel 111, the bottom of each of the first lower cross bar 22 and the second lower cross bar 24 is provided with a wheel 25, and the omni wheels 111 and the wheels 25 enable the moving frame to move.

Still be provided with the handle on the rectangular frame, the handle deviates from four the horizontal pole sets up, the accessible the handle promotes old man falls to assist and sits up booster unit and remove.

Further, the top of the first lower cross bar 22 and the top of the second lower cross bar 24 are both provided with a square box 31, a rack 32 is transversely arranged in the square box 31, and the bottom of the first lower cross bar 22 and the bottom of the second lower cross bar 24 are both provided with a second gear 33 engaged with the rack 32.

The lifting mechanism of two symmetries set up respectively in first sheer pole 22 reaches on the second sheer pole 24, every the lifting mechanism all includes biax speed reduction direct current motor 34, electromagnetic clutch 35, electric putter 36 and L shape handle 37, the pivot is respectively with corresponding wheel 25 (stretch into in the shaft hole of wheel 25) and electromagnetic clutch 35 (stretch into in a shaft hole of electromagnetic clutch 35) is connected about biax speed reduction direct current motor 34, the cover is equipped with first gear 38 on the fixed axle of electromagnetic clutch 35, first gear 38 with correspond the meshing of second gear 33, electric putter 36 set up in corresponding on the rack 32, L shape handle 37 set up in on the electric putter 36. When the old man falls down and lies on the ground, controlling the old man falling auxiliary sitting and rising power assisting device to move to the head; then the old man holds two L shape handles 37 with both hands, then electric putter 36 rises and drives old man's both arms to rise, and then can make old man's upper part of the body slightly lift up, is convenient for the follow-up delivery of back of the chair transmission mechanism. The double-shaft speed reduction direct current motor 34 can adjust the position of the L-shaped handle 37 to prevent the head of the old from being injured by collision.

Further, the seat comprises a seat surface 51 and a backrest 52, the seat surface 51 is rotatably connected with the backrest 52, two sides of the seat surface 51 are respectively provided with an L-shaped support 53, the backrest 52 is similar to the two armrests of the seat, the backrest 54 comprises a net bag 54 and two baffles 55, and two ends of the net bag 54 are respectively fixed on the two baffles 55. The top of baffle 55 is provided with gyro wheel 56, two all be provided with spout 57 on the stand 11, gyro wheel 56 blocks in the corresponding spout 57 and can follow spout 57 removes.

Two symmetrical chair back transfer mechanisms are respectively arranged between the first upper cross rod 21 and the first lower cross rod 22 and between the second upper cross rod 23 and the second lower cross rod 24, and each chair back transfer mechanism comprises a supporting plate 41, a first motor 42 and two vertically arranged first screw rods 43. Two ends of the two first lead screws 43 between the first upper cross bar 21 and the first lower cross bar 22 are connected with the first upper cross bar 21 and the first lower cross bar 22; two ends of the two first lead screws 43 between the second upper cross bar 23 and the second lower cross bar 24 are connected with the second upper cross bar 23 and the second lower cross bar 24. The two ends of each supporting plate 41 are respectively in threaded connection with the corresponding first screw rods 43, so that when the first screw rods 43 rotate, the supporting plates 41 can move up and down along the first screw rods 43, the second screw rods 44 are arranged at the bottoms of the supporting plates 41, the second screw rods 44 are in threaded connection with the corresponding L-shaped supports 53 through nuts 45, so that when the second screw rods 44 rotate, the L-shaped supports 53 can move left and right along the second screw rods 44, the seat is further driven to move left and right, the second screw rods 44 are connected with the first motor 42, and the second screw rods 44 are driven to rotate by the first motor 42.

Further, the second lead screw 44 is further provided with two limit switches 46, the two limit switches 46 are respectively located at two sides of the nut 45, and the limit switches 46 can prevent the movement of the L-shaped bracket 53 from exceeding a predetermined range.

The chair back transmission mechanism acts synchronously, and the action is divided into delivery and retraction, wherein the delivery is divided into two steps. After the old people slightly lift the upper body through the two lifting mechanisms, the chair back transmission mechanism drives the chair to horizontally move to the back of the old people through the first motor 42; then the electromagnetic clutch 35 is changed from initial disconnection to an attraction state, the double-shaft speed reduction direct current motor 34 drives the whole device to move forward, and meanwhile, under the transmission of the first gear 38, the second gear 33 and the rack 32, the two lifting mechanisms are driven to retreat relative to the seat, so that the seat surface 51 is moved to the position below the hip of the old, and meanwhile, the net bag 54 is moved to the position below the back of the old, so that the complete bag-up of the hip and the back of the old is realized. Finally, the first motor 42 drives the seat 51 to horizontally move again, and the seat 51 and the net bag 54 are rotatably connected, and the roller 56 can roll in the sliding groove 57, so that the net bag 54 is erected when the seat 51 retreats, and the back of the elderly is assisted to erect. The chair back transmission mechanism realizes the posture change from 'lying on the ground' to 'sitting on the ground'. The chair surface 51 and the net bag 54 are combined in a soft and hard mode, so that secondary injury possibly caused by the old during sitting in the ground in an auxiliary mode is avoided.

Two symmetrical seat lifting mechanisms are respectively arranged on the first upper cross rod 21 and the second upper cross rod 23, each seat lifting mechanism comprises a second motor 61, a third gear 62, a first gear set 63 and a second gear set 64, each first gear set 63 and each second gear set 64 respectively comprise an upper gear and a lower gear which are coaxially arranged, and the upper gears and the lower gears are vertically arranged. The third gear 62, the upper gear of the first gear set 63 and the upper gear of the second gear set 64 are located on the same horizontal plane and are meshed through a chain 66, and the third gear 62, the upper gear of the first gear set 63 and the upper gear of the second gear set 64 are located on the same horizontal plane and are arranged in a triangle shape. The second motor 61 is connected to the third gear 62 to drive the third gear 62 to rotate, a fourth gear 65 is sleeved on the top of each first lead screw 43, and the lower gears of the first gear set 63 and the second gear set 64 are respectively engaged with the fourth gears 65 of the two corresponding first lead screws 43. In this way, the second motor 61 can drive the first screw rod 43 to rotate, so as to control the lifting of the seat, and realize the posture change from "sitting on the ground" to "sitting off the ground" for the elderly.

Optionally, the old people falling-down assisting sitting-up assisting device further comprises a communication module and a control module, wherein the communication module can be connected with a mobile terminal; the control module responds to the signal sent by the mobile terminal and controls the actions of the double-shaft deceleration direct current motor 34, the first motor 42 and the second motor 61. In this embodiment, the mobile terminal is a mobile phone.

In summary, the invention provides an old man falling-down auxiliary sitting-up assisting device, wherein two symmetrical lifting mechanisms can help a falling-down old man lying on the ground to raise the upper half of the body, so that the seat is facilitated to be delivered to the hip and the lower back of the old man; the two symmetrical chair back transmission mechanisms realize the support of the buttocks and the back of the old, and help the old to change from the posture of lying on the ground to sitting on the ground; the chair adopts a soft and hard combined bag piece of a chair surface and a net bag, so that secondary damage possibly caused in the process of assisting the old to sit on the ground is avoided; the two symmetrical seat lifting mechanisms realize the lifting of the seat, and help the old to change from sitting on the ground to sitting off the ground.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A sit-up assist device for assisting the elderly to fall, is characterized in that, comprising:

The mobile rack includes a vertically arranged rectangular frame and four horizontal bars located at the four corners of the rectangular frame and perpendicular to the rectangular frame. The rectangular frame consists of two vertical columns and two horizontal The four cross bars are a first upper cross bar, a first lower cross bar, a second upper cross bar and a second lower cross bar, wherein the first upper cross bar and the first lower cross bar are located on the same vertical plane. The bottoms of the second lower rails are all provided with wheels, and the tops and bottoms of the first lower rails and the second lower rails are respectively provided with racks and second gears meshing with the racks;

Two symmetrical lifting mechanisms are respectively arranged on the first lower crossbar and the second lower crossbar, and the lifting mechanisms include a dual-axis deceleration DC motor, an electromagnetic clutch, an electric push rod and an L-shaped handle, The two rotating shafts of the dual-shaft deceleration DC motor are respectively connected with the electromagnetic clutch and the corresponding wheels. A first gear is sleeved on the fixed shaft of the electromagnetic clutch, and the first gear is connected with the corresponding second gear. The gears are meshed, the electric push rod is arranged on the corresponding rack, and the L-shaped handle is arranged on the electric push rod;

a seat, the two sides of the seat are respectively provided with L-shaped brackets;

Two symmetrical seatback transmission mechanisms are respectively arranged between the first upper crossbar and the first lower crossbar and between the second upper crossbar and the second lower crossbar. The seatback transmission mechanism includes a support plate, a first motor and two vertically arranged first screw rods. Both ends of the support plate are respectively connected with one of the first screw rods. Two screw rods, the second screw rods are threadedly connected with the corresponding L-shaped brackets, and the second screw rods are connected with the first motor;

Two symmetrical seat lift mechanisms are respectively arranged on the first upper cross bar and the second upper cross bar, and the seat lift mechanism includes a second motor, a third gear, a first gear set and a first Two gear sets, the first gear set and the second gear set all include coaxially arranged upper gear and lower gear, the third gear, the upper gear of the first gear set and the second gear set The upper gears are located on the same horizontal plane and meshed with the chain, the second motor is connected with the third gear, the top of each first screw rod is sleeved with a fourth gear, and the lower gear of the first gear group and the lower gears of the second gear set are respectively meshed with the corresponding fourth gears on the two first screw rods;

The seat includes a seat surface and a backrest, the seat surface and the backrest are rotatably connected, the L-shaped bracket is arranged on the seat surface, the backrest includes a net pocket and two baffles, and the two The ends are respectively fixed on the two baffles; the top of the baffles is provided with rollers, and the two uprights are provided with chute, the rollers are snapped into the corresponding chute and can move along the slide slot moves.

2 . The device for assisting the elderly to fall and sit up according to claim 1 , wherein a square box is provided on the tops of the first lower cross bar and the second lower cross bar, and the rack is arranged on the inside the square box.

3 . The device for assisting the elderly to fall and sit up according to claim 1 , wherein the rectangular frame is further provided with a handle, and the handle is disposed away from the four cross bars. 4 .

4 . The device for assisting the elderly to fall and sit up according to claim 1 , wherein the second screw rod is threadedly connected to the corresponding L-shaped bracket through a nut, and both sides of the nut are provided with limit stops. 5 . switch.

5 . The device for assisting the elderly to fall and sit up according to claim 1 , wherein the third gear, the upper gear of the first gear set, and the upper gear of the second gear set are located on the same horizontal plane and are in the same horizontal plane. 6 . Triangular arrangement.

6. The fall-assist sit-up assist device for the elderly as claimed in claim 1, further comprising:

a communication module, connected with a mobile terminal;

A control module, in response to a signal sent by the mobile terminal, and controls the actions of the dual-axis decelerated DC motor, the first motor and the second motor.