CN111407538B

CN111407538B - Long-endurance oxygen supply wheelchair

Info

Publication number: CN111407538B
Application number: CN202010242965.7A
Authority: CN
Inventors: 楼童格; 楼洁丽; 章益郎; 钱晶; 楼百根
Original assignee: Hangzhou Chuangwei Industrial Co ltd
Current assignee: Hangzhou Chuangwei Industrial Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2022-04-12
Anticipated expiration: 2040-03-31
Also published as: CN111407538A

Abstract

The invention discloses an oxygen supply wheelchair with long endurance, relating to the technical field of wheelchairs; comprises a seat board, a chair back, rollers, an oxygen supply device, an adjusting mechanism for changing the angle between the chair back and the seat board, and a power recovery mechanism for recovering the kinetic energy of the rollers so as to increase the endurance of the oxygen supply device. The oxygen supply device is used for supplying oxygen to enable a patient to inhale oxygen, and in addition, the adjusting mechanism can adjust the angles of the chair back and the seat board to enable the patient to lean backwards, so that the patient tends to lie on the back, is more comfortable and is beneficial to inhaling oxygen. The oxygen supply device is provided with the power recovery mechanism, so that medical staff can push the cart during oxygen inhalation, and at the moment, the power recovery mechanism can absorb kinetic energy of the roller, so that the oxygen supply device is powered, and the cruising ability is greatly improved.

Description

Long-endurance oxygen supply wheelchair

Technical Field

The invention belongs to the technical field of wheelchairs, and particularly relates to an oxygen supply wheelchair with a long endurance.

Background

Wheelchairs are often used for patient rehabilitation.

The patient can use the wheelchair alone, and when using, rotate the gyro wheel with both hands and can, however, some patient's state of an illness is not very stable yet, uses the wheelchair, and probably the state of an illness can aggravate suddenly, and this time, the urgent need oxygen uptake.

The existing wheelchair does not have an oxygen supply device and a power recovery structure, and has poor cruising ability.

Disclosure of Invention

The invention aims to overcome the defects that the prior art does not have an oxygen supply device and has poor endurance, and provides an oxygen supply wheelchair with long endurance; the oxygen supply device and the power recovery mechanism are provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

an oxygen supply wheelchair with long endurance comprises a seat plate, a chair back, rollers, an oxygen supply device, an adjusting mechanism for changing the angle between the chair back and the seat plate, and a power recovery mechanism for recovering the kinetic energy of the rollers so as to increase the endurance of the oxygen supply device. The oxygen supply device is used for supplying oxygen to enable a patient to inhale oxygen, and in addition, the adjusting mechanism can adjust the angles of the chair back and the seat board to enable the patient to lean backwards, so that the patient tends to lie on the back, is more comfortable and is beneficial to inhaling oxygen. The oxygen supply device is provided with the power recovery mechanism, so that medical staff can push the cart during oxygen inhalation, and at the moment, the power recovery mechanism can absorb kinetic energy of the roller, so that the oxygen supply device is powered, and the cruising ability is greatly improved.

Preferably, a bottom plate is arranged below the seat plate, brackets are arranged on two opposite sides of the chair back, the lower ends of the brackets are fixedly connected to the bottom plate, the brackets are hinged to the chair back, the end part of the seat plate leans against the chair back, the height of one end, leaning against the chair back, of the seat plate is lower than that of the hinged end of the brackets and the chair back, a groove is formed in the lower end of the chair back, and a guide slope is arranged in the groove, wherein the upper end of the chair back rotates towards the rear side when the seat plate slides downwards in the groove; the adjusting mechanism comprises an electric telescopic assembly, a first connecting rod and a second connecting rod, wherein the lower end of the electric telescopic assembly is hinged to the bottom plate, the upper end of the electric telescopic assembly is hinged to one end, close to the chair back, of the lower side of the seat plate, the lower end of the first connecting rod is hinged to the lower end of the electric telescopic assembly, the upper end of the first connecting rod is leaned against one end, far away from the chair back, of the lower side of the seat plate, the upper end of the second connecting rod is hinged to the upper end of the electric telescopic assembly, the lower end of the second connecting rod is hinged to the first connecting rod, and the distance from the lower end of the second connecting rod to the bottom plate is larger than the distance from the upper end of the second connecting rod to the seat plate. The structure is simple.

Preferably, the rollers comprise rear rollers which are rotatably connected to the bracket, a rotating shaft penetrates through the bracket and is rotatably connected with the bracket, the rear rollers are fixedly connected to the rotating shaft, and the brake disc and the rear rollers are positioned on two opposite sides of the bracket; the power recovery mechanism comprises a brake disc fixedly connected to the rotating shaft, a transverse sliding chute positioned on one side, close to the chair back 3, of the support, a sliding sleeve connected in the transverse sliding chute in a sliding mode, a partition plate for dividing the inner space of the sliding sleeve into a first cylinder cavity and a second cylinder cavity, a piston positioned in the first cylinder cavity, a generator positioned in the second cylinder cavity and connected with the oxygen supply device, a piston rod with the end part inserted into the first cylinder cavity and fixedly connected with the piston, a ball rotatably connected to one end, far away from the piston, of the piston rod, a piston spring positioned between the partition plate and the piston, a ball guide slope positioned at the bottom of the transverse sliding chute and an air passage positioned in the side wall of the sliding sleeve; the sliding sleeve leans against the rear side of the chair back 3, the ball is connected to a ball guide slope in a rolling mode, one end of the air passage is connected with the first air cylinder cavity, the other end of the air passage is connected with the second air cylinder cavity, and the generator is in sealing fit with the second air cylinder cavity; the generator comprises a generator roller for rolling on a brake disc; when the sliding sleeve slides towards the front end of the transverse sliding groove, the piston rod moves towards one side far away from the partition plate under the action of the ball guide slope, and the generator roller moves towards the direction of the brake disc under the action of air pressure. The structure is simple. Before the adjusting mechanism is not adjusted, the roller is manually rotated by a patient, the power recovery mechanism does not operate, so that labor is saved, after the adjusting mechanism operates, the patient inhales oxygen and is weak, the wheelchair is pushed by healthy medical personnel, and the power recovery mechanism operates to increase cruising ability.

Preferably, a vertical sliding groove 43 is arranged at the front end of the horizontal sliding groove 42, the bottom end of the vertical sliding groove 43 is intersected with the horizontal sliding groove 42, a brake slider 56 is arranged at the bottom end of the vertical sliding groove 43, an extension sliding groove 57 is arranged at the corresponding position of the horizontal sliding groove 42 on the brake slider 56, the groove bottom of the extension sliding groove 57 is flush with the ball guide slope 54, a brake slider sliding groove 58 with the middle communicated with the extension sliding groove 57 is arranged in the brake slider 56, the trend of the brake slider sliding groove 58 is consistent with that of the vertical sliding groove 43, a piston control block 59 is connected in the brake slider sliding groove 58 in a sliding manner, a control groove 60 with a V-shaped cross section for embedding the groove bottom of the ball 51 is arranged in the piston 48, a vertical transmission belt 61 is arranged in the vertical sliding groove 43, a transmission belt pulley 62 for rotating the vertical transmission belt 61 is arranged on the support 8, one end of the vertical transmission belt 61 enters the groove from the upper end of the brake slider sliding groove 58 and is connected with the piston control block 59, the other end of the vertical transmission belt 61 enters the groove from the lower end of the brake sliding block sliding groove 58 and is connected with the piston control block 59; an electric push rod 63 is arranged on the brake sliding block 56, the end of the electric push rod 63 is positioned in the extension sliding groove 57, and a slope 64 which enables the piston rod 50 to move towards the partition plate 47 under the extrusion of the electric push rod 63 is arranged on the piston rod 50. When the wheelchair is braked, the distance between the generator and the rotating shaft is increased, the generating efficiency is improved, the speed of the wheelchair is rapidly reduced, and the dual purposes of speed reduction and power generation are achieved.

Preferably, the electric telescopic assembly comprises a sleeve, a lifting rod, a sleeve spring, a pull wire, a reel and a reel motor, wherein the lower end of the sleeve is fixedly connected to the bottom plate, the lower end of the lifting rod is inserted into the upper end of the sleeve, the sleeve spring is positioned in the sleeve and used for providing upward elastic force for the lifting rod, the pull wire is positioned in the sleeve and used for pulling the lifting rod downwards, the reel is used for winding the pull wire, and the reel motor is used for rotating the reel. Simple structure, simultaneously, at ordinary times, electronic flexible subassembly possesses absorbing function, promotes patient's comfort level.

Preferably, the chair back comprises a chair back upper plate, handles fixedly connected to two ends of the lower side of the chair back upper plate, and a chair back lower plate rotatably connected between the handles, the chair back lower plate is rotatably connected to the support, the guide slope is located on the chair back lower plate, a control rod is inserted at the lower end of the chair back lower plate, the upper end of the control rod is located at the lower end of the groove, a control rod spring for pushing the control rod to the groove is arranged on the control rod, a support block is fixedly connected to the chair back lower plate, a slider is slidably connected to the chair back upper plate and located above the support block, a second spring is arranged between the slider and the support block, a hook is rotatably connected to the chair back lower plate, the upper end of the hook is hooked with the slider, a coil spring for driving the upper end of the hook to rotate towards the slider is arranged on the hook, a hook control rod is fixedly connected to the lower end of the hook, and a pull wire is connected to the hook control rod, the utility model discloses a chair back, including the back of the chair, the back of the chair lower extreme that acts as go-between, hook act as go-between lower extreme and control lever lower extreme, articulated on the handle have be used for driving back of the chair upper plate upper end towards front side pivoted push rod, the push rod lower extreme articulates on the slider, the slider downside is connected with the line of acting as go-between that resets, back of the chair lower extreme rotates and is connected with the reversing wheel, the line lower extreme that resets passes behind the supporting shoe behind the reversing wheel and connects at the bedplate downside, oxygen supply unit is located the back of the chair upper plate. The adjustable oxygen supply device has the advantages that the structure is simple, the adjusting mechanism enables the chair back upper plate to rotate after adjustment, the oxygen supply device is located on the front side of the head of a patient and is convenient to take, meanwhile, the height of the seat plate is reduced when the adjusting mechanism adjusts, so that the rotating space of the chair back upper plate is reserved, the structure is ingenious, and the adjustable oxygen supply device has the characteristic of small size.

Preferably, the lower plate of the chair back is fixedly connected with a limiting block, and when the upper plate of the chair back and the lower plate of the chair back are level, the limiting block leans against one side of the handle facing the seat plate. Used for limiting.

Preferably, the oxygen supply device comprises an oxygen generator, an air pipe and an oxygen mask, a cavity is arranged in the chair back upper plate, the oxygen generator is located at the lower end of the cavity, an outlet is formed in the upper end of the cavity facing one side of the seat plate, the upper end of the cavity is provided with a second outlet for the air pipe to pass through, and a magnet used for adsorbing the oxygen mask on the outlet is arranged at the edge of the oxygen mask. The structure is simple.

Preferably, the trachea is helical. The spiral air pipe design can automatically shorten when the oxygen mask is put on the outlet again.

The invention has the beneficial effects that: the invention provides an oxygen supply wheelchair with long endurance; oxygen can be supplied, and meanwhile, the comfort is good; the cruising ability is strong.

Drawings

FIG. 1 is a side view, partially in section, of the present invention;

FIG. 2 is a front view, partially in section, of the present invention;

FIG. 3 is a schematic view of the present invention without oxygen uptake;

FIG. 4 is a schematic view of the present invention during oxygen inhalation;

FIG. 5 is a schematic view of the bracket, brake disc, rear roller;

FIG. 6 is a schematic view of the brake disc hidden in FIG. 5;

FIG. 7 is an enlarged view of FIG. 6 at B;

FIG. 8 is a cross-sectional view A-A of FIG. 5;

FIG. 9 is a schematic diagram of the generator in operation;

fig. 10 is a cross-sectional view C-C of fig. 9.

In the figure: the device comprises a roller 1, a seat plate 2, a chair back 3, a bottom plate 7, a bracket 8, a guide slope 9, an electric telescopic assembly 10, a first connecting rod 11, a second connecting rod 12, a sleeve 13, a lifting rod 14, a sleeve spring 15, a pull wire 16, a reel 17, a chair back upper plate 18, a handle 19, a chair back lower plate 20, a control rod 21, a groove 22, a supporting block 23, a slider 24, a hook 25, a hook control rod 26, a hook pull wire 27, a push rod 28, a reset pull wire 29, a reversing wheel 30, a cavity 31, an oxygen generator 32, an air pipe 33, an oxygen mask 34, an outlet 35, a magnet 36, a second outlet 37, a limiting block 38, a rear roller 39, a rotating shaft 40, a brake disc 41, a transverse sliding chute 42, a vertical sliding chute 43, a sliding sleeve 44, a first air cylinder cavity 45, a second air cylinder cavity 46, a partition plate 47, a piston 48, a generator 49, a piston rod 50, a ball 51, a piston spring 52, a generator roller 53, a ball guide slope 54, a first connecting rod, a second connecting rod, The device comprises an air channel 55, a brake slider 56, an extension sliding groove 57, a brake slider sliding groove 58, a piston control block 59, a control groove 60, a vertical transmission belt 61, a transmission belt wheel 62, an electric push rod 63, a slope 64 and an avoiding groove 65.

Detailed Description

The invention is explained in further detail below with reference to the figures and the detailed description:

example (b):

referring to fig. 1 to 10, the oxygen supply wheelchair with long endurance comprises a seat plate 2, a chair back 3, rollers 1, an oxygen supply device and an adjusting mechanism for changing the angle between the chair back 3 and the seat plate 2; the utility model discloses a chair for the children, including bedplate 2 below, back of the chair 3 relative both sides are equipped with bottom plate 7, support 8 lower extreme rigid coupling is on bottom plate 7, support 8 is articulated with back of the

chair

3, 2 tip of bedplate lean on the back of the chair 3, the one end place height that bedplate 2 leaned on the back of the chair 3 is less than the hinged end place height of support 8 with back of the

chair

3, 3 lower extremes of the back of the chair are equipped with recess 22, be equipped with in the recess 22 when bedplate 2 glides down in recess 22 3 upper end of the back of the chair towards rear side pivoted direction slope 9.

Adjustment mechanism includes electronic flexible subassembly 10, first connecting rod 11, second connecting rod 12, electronic flexible subassembly 10 lower extreme articulates on bottom plate 7, the one end that 2 downside of bedplate are close to back of the chair 3 is articulated to electronic flexible subassembly 10 upper end, first connecting rod 11 lower extreme articulates at electronic flexible subassembly 10 lower extreme, first connecting rod 11 upper end is leaned on the one end of 2 downside of bedplate and is kept away from back of the chair 3, second connecting rod 12 upper end articulates the upper end at electronic flexible subassembly 10, second connecting rod 12 lower extreme articulates on first connecting rod 11, second connecting rod 12 lower extreme is greater than the distance of second connecting rod 12 upper end apart from bedplate 2 apart from the distance of second connecting rod 12 lower extreme distance bottom plate 7.

The electric telescopic assembly 10 includes a sleeve 13 having a lower end fixed to the base plate 7, a lift rod 14 having a lower end inserted into an upper end of the sleeve 13, a sleeve spring 15 provided in the sleeve 13 for providing an upward elastic force to the lift rod 14, a pull wire 16 provided in the sleeve 13 for pulling the lift rod 14 downward, a reel 17 for winding the pull wire 16, and a reel motor for rotating the reel 17.

The back of the chair 3 includes back of the chair upper plate 18, rigid coupling handle 19, the back of the chair hypoplastron 20 of rotation connection between handle 19 at back of the chair upper plate 18 downside both ends, back of the chair hypoplastron 20 rotates and connects on support 8, direction slope 9 is located back of the chair hypoplastron 20, back of the chair hypoplastron 20 lower extreme is inserted and is equipped with control lever 21, the lower extreme that the upper end of control lever 21 is located the recess 22, be equipped with the control lever spring that is used for pushing control lever 21 to recess 22 on the control lever 21, the rigid coupling has supporting shoe 23 on back of the chair hypoplastron 20, sliding connection has slider 24 on back of the chair upper plate 18, slider 24 is located supporting shoe 23 top, be equipped with the second spring between slider 24 and the supporting shoe 23, rotation connection hook 25 on back of the chair hypoplastron 20, hook 25 upper end and slider 24 hook, be equipped with the coil spring that is used for driving hook 25 upper end to rotate towards slider 24 on the hook 25, a hook control rod 26 is fixedly connected to the lower end of the hook 25, a hook pull wire 27 is connected to the hook control rod 26, the lower end of the hook pull wire 27 is connected to the lower end of the control rod 21, a push rod 28 for driving the upper end of the seat back upper plate 18 to rotate towards the front side is hinged to the handle 19, the lower end of the push rod 28 is hinged to the slider 24, a reset pull wire 29 is connected to the lower side of the slider 24, a reversing wheel 30 is rotatably connected to the lower end of the seat back lower plate 20, the lower end of the reset pull wire 29 passes through the supporting block 23 and then is connected to the lower side of the seat plate 2 through the reversing wheel 30, and the oxygen supply device is located on the seat back upper plate 18; the lower back plate 20 is fixedly connected with a limit block 38, and when the upper back plate 18 is flush with the lower back plate 20, the limit block 38 leans against one side of the handle 19 facing the seat plate 2.

The apparatus of oxygen supply includes oxygenerator 32, is spiral helicine trachea 33, oxygen mask 34, be equipped with cavity 31 in the backrest upper plate 18, oxygenerator 32 is located the cavity 31 lower extreme, cavity 31 upper end is equipped with export 35 towards one side of bedplate 2, cavity 31 upper end is equipped with and is used for trachea 33 to pass through second export 37, the edge of oxygen mask 34 is equipped with and is used for adsorbing magnet 36 on export 35 with oxygen mask 34.

A power recovery mechanism is added on the basis of the scheme; the method specifically comprises the following steps:

the rollers comprise a rear roller 39 which is rotatably connected to the support 8, a rotating shaft 40 penetrates through the support 8, the rotating shaft 40 is rotatably connected with the support 8, the rear roller 39 is fixedly connected to the rotating shaft 40, the brake disc 41 and the rear roller 39 are positioned on two opposite sides of the support 8, an avoiding groove 65 is formed in the lower end of the chair back, and the upper end of the brake disc is positioned in the avoiding groove;

the power recovery mechanism comprises a brake disc 41 fixedly connected to a rotating shaft 40, a transverse sliding groove 42 positioned on one side of the bracket 8 close to the chair back 3, a sliding sleeve 44 connected in the transverse sliding groove 42 in a sliding manner, a partition plate 47 dividing the inner space of the sliding sleeve 44 into a first cylinder cavity 45 and a second cylinder cavity 46, a piston 48 positioned in the first cylinder cavity 45, a generator 49 positioned in the second cylinder cavity 46 and connected with an oxygen supply device, a piston rod 50 with the end part inserted into the first cylinder cavity 45 and fixedly connected with the piston 48, a ball 51 rotatably connected to one end of the piston rod 50 far away from the piston 48, a piston spring 52 positioned between the partition plate 47 and the piston 48, a ball guide slope 54 positioned at the bottom of the transverse sliding groove 42, and an air passage 55 positioned in the side wall of the sliding sleeve 44; the sliding sleeve 44 leans against the rear side of the lower end of the chair back 3, the ball 51 is connected to the ball guide slope 54 in a rolling mode, one end of the air passage 55 is connected with the first cylinder cavity 45, the other end of the air passage 55 is connected with the second cylinder cavity 46, and the generator 49 is in sealing fit with the second cylinder cavity 46; the generator 49 comprises a generator roller 53 for rolling on the brake disc 41; when the sliding sleeve 44 slides towards the front end of the transverse sliding slot 42, the piston rod 50 moves towards the side far away from the partition 47 under the action of the ball guide slope 54, and the generator roller 53 moves towards the brake disc 41 under the action of air pressure.

The front end of the transverse sliding groove 42 is provided with a vertical sliding groove 43, the bottom end of the vertical sliding groove 43 is intersected with the transverse sliding groove 42, the bottom end of the vertical sliding groove 43 is provided with a brake slider 56, the brake slider 56 is provided with an extension sliding groove 57 at the corresponding position of the transverse sliding groove 42, the groove bottom of the extension sliding groove 57 is flush with the ball guide slope 54, a brake slider sliding groove 58 with the middle communicated with the extension sliding groove 57 is arranged in the brake slider 56, the trend of the brake slider sliding groove 58 is consistent with that of the vertical sliding groove 43, a piston control block 59 is connected in the brake slider sliding groove 58 in a sliding manner, a control groove 60 with a V-shaped cross section for embedding the groove bottom of the ball 51 is arranged in the piston 48, a vertical transmission belt 61 is arranged in the vertical sliding groove 43, a transmission belt wheel 62 for rotating the vertical transmission belt 61 is arranged on the support 8, one end of the vertical transmission belt 61 enters the groove from the upper end of the brake slider sliding groove 58 and is connected with the piston control block 59, the other end of the vertical transmission belt 61 enters the groove from the lower end of the brake sliding block sliding groove 58 and is connected with the piston control block 59; an electric push rod 63 is arranged on the brake sliding block 56, the end of the electric push rod 63 is positioned in the extension sliding groove 57, and a slope 64 which enables the piston rod 50 to move towards the partition plate 47 under the extrusion of the electric push rod 63 is arranged on the piston rod 50.

The upper end and the lower end of the vertical sliding groove are provided with photoelectric switches used for sensing the brake sliding block, the transmission belt wheel is driven by a transmission belt wheel motor, and the transmission belt wheel motor is connected with the photoelectric switches. The handle is provided with a brake button which is connected with a driving belt wheel motor.

Principle of embodiment:

in normal times, a patient directly uses two hands to drive the roller 1 to rotate; when the illness condition of a patient is aggravated, the roller wheel is not rotated by strength, at this time, the wheelchair is provided with a switch, the switch is pressed, the reel motor rotates, the reel 17 rotates, the pull wire 16 pulls the lifting rod 14, the lifting rod 14 moves downwards, the first connecting rod 11, the second connecting rod 12 and the electric telescopic component 10 can be regarded as a triangle, the triangle deforms along with the shortening of the electric telescopic component 10, and the distance from the lower end of the second connecting rod 12 to the bottom plate 7 is larger than the distance from the upper end of the second connecting rod 12 to the seat plate 2; therefore, according to the theory of similar triangle, when the upper end of the electric telescopic assembly 10 descends, the upper end of the first connecting rod 11 also descends at the same time, and the descending distance of the upper end of the electric telescopic assembly 10 is greater than the descending distance of the upper end of the first connecting rod 11, and the upper end of the first connecting rod 11 descends when descending, the upper end of the first connecting rod 11 can slide towards the direction away from the chair back 3 at the lower side of the seat plate 2, under the initial state, the seat plate 2 is horizontal, because after the electric telescopic assembly 10 shortens, the descending distance near the chair back 3 is more, and the seat plate 2 can be seen as counterclockwise rotation, and at the same time, the electric telescopic assembly 10 is vertical, therefore, the seat plate 2 moves towards the side away from the chair back 3 slightly compared with before shortening after the electric telescopic assembly 10 shortens, and this is favorable for the adjustment of the angle of the chair back 3. Meanwhile, as the seat plate 2 descends near one end of the chair back 3, the end of the seat plate 2 descends along the chair back 3 (in this embodiment, a coil spring is arranged between the lower plate 20 of the chair back and the bracket 8, so that pressure always exists between the lower plate 20 of the chair back and the seat plate 2), the end of the seat plate 2 moves from top to bottom in the groove 22, the upper end of the chair back 3 rotates towards the rear side under the action of the guide slope 9 (the advancing direction of the wheelchair is defined as the front side, and the opposite side is the rear side), when the end of the seat plate 2 reaches the lower end of the groove 22, the seat plate 2 pushes the control rod 21, the control rod 21 moves downwards, the hook pulling wire 27 pulls the hook 25, the hook is separated from the slide block 24, the slide block 24 moves upwards under the action of the second spring, at this time, the push rod 28 moves upwards, the push rod 28 rotates the handle 19 and the upper plate 18 of the chair back (initially, the chair back 3 is adapted to the patient, the top of the head of the patient is positioned at the upper plate 18 of the chair back, when the electric telescopic assembly 10 is shortened, the height of the top of the head of the patient is reduced due to the fact that the seat plate 2 is lowered, and at this time, the height of the top of the head of the patient is lower than the height of the lower end of the lower plate 20 of the chair back), after the upper plate 18 of the chair back is rotated, the oxygen mask 34 is located on the front side of the head of the patient, at this time, the patient can be easily taken down by hand, and the air pipe 33 is spiral and is similar to the shape of a telephone line, so that the air pipe 33 can be conveniently stored, and the oxygen mask 34 can be conveniently taken by the design of the magnet 36; at this time, the push rod 28 plays a role of supporting the handle 19, and at this time, because the angles of the chair back 3 and the chair plate 2 are adjusted, at this time, the patient lies more "flat" before comparing the angle adjustment (the angle adjustment range is smaller in fig. 4, technicians can easily realize larger angle adjustment by adjusting the guide slope 9, the first connecting rod 11, the second connecting rod 12 and the like, and do not unfold here), which is more beneficial to saving physical strength and oxygen inhalation; the patient is then inconveniently rotated by the rollers, and the handle 19 facilitates the caregiver to push the cart.

It should be noted that the present electric telescopic assembly 10 has a shock absorbing effect at ordinary times.

After use, the reel 17 rotates in the reverse direction, at this time, the sleeve spring 15 extends, the electric telescopic assembly 10 extends, the seat plate 2 and the seat back 3 return to the initial positions, when the seat plate 2 is reset, the seat plate 2 pulls the reset wire 29, at this time, the second spring is shortened, the slider 24 moves downward, and when the seat plate 2 is reset, the slider 24 is hooked with the slider 24 again. The push rod 28 moves downwards, the handle 19 and the upper chair back plate 18 rotate, the lower end of the upper chair back plate 18 is abutted against the limiting block 38 again, and the upper chair back plate 18 is flush with the lower chair back plate 20.

The principle of operation of the power recovery mechanism is as follows:

when the adjusting mechanism operates, the chair back 3 rotates, at the moment, the chair back 3 moves towards one side far away from the sliding sleeve, under the action of the ball guide slope, the piston spring extends, the ball moves along the ball guide slope, the sliding sleeve moves close to the chair back 3, when the adjusting mechanism operates completely, the ball moves from the transverse sliding groove to the extending section sliding groove 57 and then is embedded into the control groove 60, because the groove bottom of the control groove is V-shaped, under the elastic force action of the piston spring, the ball is positioned at the corner of the groove bottom of the control groove, in the embedding process, the piston spring further extends, the piston further moves towards the direction far away from the partition plate, the first cylinder cavity forms a closed space at one side far away from the partition plate of the piston, when the piston moves, the volume of the closed space is reduced, the volume of the second cylinder cavity is increased through the air passage, at the moment, the generator moves towards the brake disc 41, the generator roller leans against the brake disc, and when the rear roller rotates, the brake disc is driven to rotate, the generator roller is driven to rotate, so that power is generated, and power is supplied to the oxygen supply device.

When braking is needed, a brake button is pressed, the transmission belt wheel rotates at the moment, the transmission belt wheel drives the piston control block 59 to move upwards, the situation needs to be provided, the generator roller 53 leans against a brake disc, the generator roller 53 is positioned right above the rotating shaft, the rolling direction of the generator roller is in the horizontal direction, therefore, when the piston control block 59 moves upwards, the generator roller cannot move, at the moment, under the action of a control groove, the piston spring is shortened, under the action of air pressure, the generator moves towards a partition plate, at the moment, the generator roller 53 is separated from the brake disc, the generator roller moves upwards along a vertical sliding groove, the brake sliding block and the piston control block 59 also move upwards, when the brake sliding block moves to an upper photoelectric switch, at the moment, the transmission belt wheel stops rotating, under the action of the piston spring, the ball rolls to the corner of the control groove again, the generator roller leans against the brake disc again, and because the distance between the generator roller 53 and the rotating shaft is increased after the generator roller 53 moves upwards, the rotating shaft (the rear roller) rotates for the same number of turns, the number of turns of the generator roller is greatly increased, the generating capacity is greatly increased, and most of kinetic energy of the wheelchair is converted into electric energy to be stored; the speed of the wheelchair is rapidly reduced to achieve the dual effects of braking and charging.

After the brake, the wheelchair stops, at this moment, driving pulley antiport, vertical drive belt 61 stimulates piston control block 59 downwards, the ball upwards moves along control slot 60, the ball leaves the flex point of control slot, piston spring shortens, under atmospheric pressure, the generator gyro wheel leaves the brake disc, the generator, the sliding sleeve, the brake slider, piston control block 59 all moves downwards along vertical spout, when the brake slider moves the photoelectric switch of lower extreme, the brake slider stops sliding, at this moment, horizontal spout flushes with extension section spout 57 again, under piston spring's effect, the ball rolls to the flex point department of control slot again.

After the oxygen uptake is finished, the chair back needs to be adjusted back to the initial state, at the moment, the electric push rod 63 extends, the electric push rod 63 extrudes the slope 64, under the guiding action of the slope, the piston rod moves towards the partition plate, the ball leaves the control groove, then when the chair back rotates, the chair back pushes the sliding sleeve onto the transverse sliding groove, the electric push rod 63 is separated from the slope, and finally the sliding sleeve returns to the end, away from the vertical sliding groove, of the transverse sliding groove again.

Claims

1. The oxygen supply wheelchair with long endurance is characterized by comprising a seat plate, a chair back, rollers, an oxygen supply device, an adjusting mechanism for changing the angle between the chair back and the seat plate, and a power recovery mechanism for recovering the kinetic energy of the rollers so as to increase the endurance of the oxygen supply device;

a bottom plate is arranged below the seat plate, brackets are arranged on two opposite sides of the chair back, the lower ends of the brackets are fixedly connected to the bottom plate, the brackets are hinged to the chair back, the end part of the seat plate leans against the chair back, the height of one end, leaning against the chair back, of the seat plate is lower than that of the hinged end of the brackets and the chair back, a groove is formed in the lower end of the chair back, and a guide slope is arranged in the groove, wherein the upper end of the chair back rotates towards the rear side when the seat plate slides downwards in the groove;

the adjusting mechanism comprises an electric telescopic assembly, a first connecting rod and a second connecting rod, the lower end of the electric telescopic assembly is hinged to the bottom plate, the upper end of the electric telescopic assembly is hinged to one end, close to the chair back, of the lower side of the seat plate, the lower end of the first connecting rod is hinged to the lower end of the electric telescopic assembly, the upper end of the first connecting rod leans against one end, far away from the chair back, of the lower side of the seat plate, the upper end of the second connecting rod is hinged to the upper end of the electric telescopic assembly, the lower end of the second connecting rod is hinged to the first connecting rod, and the distance from the lower end of the second connecting rod to the bottom plate is larger than the distance from the upper end of the second connecting rod to the seat plate;

the roller comprises a rear roller which is rotatably connected to a bracket, a rotating shaft penetrates through the bracket and is rotatably connected with the bracket, and the rear roller is fixedly connected to the rotating shaft;

the power recovery mechanism comprises a brake disc fixedly connected to the rotating shaft, a transverse sliding chute positioned on one side, close to the chair back, of the support, a sliding sleeve connected in the transverse sliding chute in a sliding mode, a partition plate for dividing the inner space of the sliding sleeve into a first cylinder cavity and a second cylinder cavity, a piston positioned in the first cylinder cavity, a generator positioned in the second cylinder cavity and connected with the oxygen supply device, a piston rod with the end part inserted into the first cylinder cavity and fixedly connected with the piston, a ball rotatably connected to one end, far away from the piston, of the piston rod, a piston spring positioned between the partition plate and the piston, a ball guide slope positioned at the bottom of the transverse sliding chute and an air passage positioned in the side wall of the sliding sleeve;

the sliding sleeve leans against the rear side of the lower end of the chair back, the ball is connected to a ball guide slope in a rolling mode, one end of the air passage is connected with the first air cylinder cavity, the other end of the air passage is connected with the second air cylinder cavity, and the generator is in sealing fit with the second air cylinder cavity;

the brake disc and the rear idler wheel are positioned on two opposite sides of the bracket, the lower end of the chair back is provided with an avoiding groove, and the upper end of the brake disc is positioned in the avoiding groove;

the generator comprises a generator roller for rolling on a brake disc;

when the sliding sleeve slides towards the front end of the transverse sliding groove, the piston rod moves towards one side far away from the partition plate under the action of the ball guide slope, and the generator roller moves towards the direction of the brake disc under the action of air pressure;

the chair back comprises a chair back upper plate, handles fixedly connected to two ends of the lower side of the chair back upper plate, and a chair back lower plate rotatably connected between the handles, the chair back lower plate is rotatably connected to the support, the guide slope is located on the chair back lower plate, a control rod is inserted at the lower end of the chair back lower plate, the upper end of the control rod is located at the lower end of the groove, a control rod spring for pushing the control rod to the groove is arranged on the control rod, a support block is fixedly connected to the chair back lower plate, a slide block is slidably connected to the chair back upper plate and located above the support block, a second spring is arranged between the slide block and the support block, a hook is rotatably connected to the chair back lower plate, the upper end of the hook is hooked with the slide block, a hook coil spring for driving the upper end of the hook to rotate towards the slide block is arranged on the hook, a hook control rod is fixedly connected to the lower end of the hook, and a pull wire hook is connected to the hook control rod, the utility model discloses a chair back, including the back of the chair, the back of the chair lower extreme that acts as go-between, hook act as go-between lower extreme and control lever lower extreme, articulated on the handle have be used for driving back of the chair upper plate upper end towards front side pivoted push rod, the push rod lower extreme articulates on the slider, the slider downside is connected with the line of acting as go-between that resets, back of the chair lower extreme rotates and is connected with the reversing wheel, the line lower extreme that resets passes behind the supporting shoe behind the reversing wheel and connects at the bedplate downside, oxygen supply unit is located the back of the chair upper plate.

2. The oxygen supply wheelchair with long endurance as claimed in claim 1, wherein a vertical sliding groove is formed at the front end of the transverse sliding groove, the bottom end of the vertical sliding groove intersects with the transverse sliding groove, a brake slider is arranged at the bottom end of the vertical sliding groove, an extension sliding groove is formed in the corresponding position of the transverse sliding groove, the bottom of the extension sliding groove is flush with the ball guide slope, a brake slider sliding groove communicated with the extension sliding groove is formed in the brake slider, the direction of the brake slider sliding groove is consistent with that of the vertical sliding groove, a piston control block is connected in the brake slider sliding groove in a sliding manner, a control groove with a V-shaped cross section is formed in the piston and used for embedding the ball, a vertical transmission belt is arranged in the vertical sliding groove, a transmission belt wheel used for rotating the vertical transmission belt is arranged on the support, one end of the vertical transmission belt enters the groove from the upper end of the brake slider sliding groove and is connected with the piston control block, the other end of the vertical transmission belt enters the groove from the lower end of the sliding groove of the brake sliding block and is connected with the piston control block;

the brake device is characterized in that an electric push rod is arranged on the brake sliding block, the end part of the electric push rod is located in the extending section sliding groove, and a slope which enables the piston rod to move towards the partition plate under the extrusion of the electric push rod is arranged on the piston rod.

3. The long-endurance oxygen supplying wheelchair as claimed in claim 1, wherein the electric telescopic assembly includes a sleeve having a lower end fixed to the base plate, a lift rod having a lower end inserted into an upper end of the sleeve, a sleeve spring provided in the sleeve for providing an upward elastic force to the lift rod, a pull wire provided in the sleeve for pulling the lift rod downward, a reel for winding the pull wire, and a reel motor for rotating the reel.

4. The oxygen supply wheelchair as claimed in claim 1, wherein a limiting block is fixed on the lower plate of the backrest, and when the upper plate of the backrest is flush with the lower plate of the backrest, the limiting block leans against one side of the handle facing the seat plate.

5. The long-endurance oxygen supply wheelchair as claimed in claim 1, wherein the oxygen supply device comprises an oxygen generator, an air pipe and an oxygen mask, a cavity is arranged in the upper plate of the backrest, the oxygen generator is located at the lower end of the cavity, an outlet is arranged at one side of the upper end of the cavity facing the seat plate, a second outlet is arranged at the upper end of the cavity for the air pipe to pass through, and a magnet for adsorbing the oxygen mask on the outlet is arranged at the edge of the oxygen mask.