CN112741740A

CN112741740A - Novel old man's auxiliary seat

Info

Publication number: CN112741740A
Application number: CN202110057420.3A
Authority: CN
Inventors: 霍建华; 何卫锋; 钟紫鹏; 丁嘉豪
Original assignee: Guangdong University of Technology
Current assignee: Guangdong University of Technology
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-05-04

Abstract

The invention discloses a novel old man auxiliary seat which comprises a backrest, a supporting seat board and armrests, wherein the backrest is pivoted with the rear end of the supporting seat board, an upright rack is arranged behind the backrest, a tooth block meshed with the rack is arranged on the backrest, and the heights of the backrest and the supporting seat board can be adjusted by changing the meshing position of the tooth block relative to the rack; the supporting seat plate is provided with an auxiliary seat plate, the auxiliary seat plate and the supporting seat plate are connected in a pivot mode at the front end of the supporting seat plate, a turnover portion toothed plate is fixedly mounted on the auxiliary seat plate in a direction parallel to a pivot shaft, a turnover portion motor is arranged below the supporting seat plate, and the turnover portion motor drives the turnover portion toothed plate to rotate in a gear transmission mode, so that the auxiliary seat plate is driven to turn upwards relative to the supporting seat plate. The simple and firm movable connecting mechanism is arranged at the joint positions of the backrest and the seat board, so that the seat has the functions of flexible lifting, auxiliary rising and automatic storage.

Description

Novel old man's auxiliary seat

Technical Field

The invention relates to the field of seats, in particular to a novel auxiliary seat for the old.

Background

With the increasing increase of the aging in China, the proportion of the old in China is getting larger and larger, and the demand of the old care bed in the domestic old care market is also increasing, so that the blowout development of the old care product is caused, the old chair also gets attention of people, and the old people also hope to sit on the chair more suitable for themselves.

The old people chairs in the current market cannot adjust the height of the old people chairs, so that the old people with too high or too low height are not suitable, and the practicability is relatively deficient; in addition, the chair is lack of a structure for assisting sitting up, so that the old people are difficult to get up after sitting down and are often troublesome.

Disclosure of Invention

The invention aims to provide a novel old man auxiliary seat which is convenient to operate, safe and practical, aiming at solving the problems that the seat in the prior art is single in height and cannot assist in getting up.

The above purpose of the invention is realized by the following technical scheme:

a novel old man auxiliary seat comprises a backrest, a supporting seat board and armrests, wherein the backrest is pivoted with the rear end of the supporting seat board, an upright rack is arranged behind the backrest, a tooth block meshed with the rack is arranged on the backrest, and the heights of the backrest and the rear end of the supporting seat board can be adjusted by changing the meshing position of the tooth block relative to the rack;

the supporting seat plate is provided with an auxiliary seat plate, the auxiliary seat plate and the supporting seat plate are in pivot connection at the front end of the supporting seat plate, a turnover part toothed plate is fixedly installed on the auxiliary seat plate in a direction parallel to a pivot shaft, a turnover part motor is arranged below the supporting seat plate, and the turnover part motor drives the turnover part toothed plate to rotate in a gear transmission mode, so that the auxiliary seat plate is driven to turn upwards relative to the supporting seat plate.

As a further optimized scheme of the invention, the backrest is height-adjusted by a latch tension spring mechanism, the latch tension spring mechanism comprises the tooth block and tension springs, two sides of the tooth block are connected with the backrest by the tension springs, and the end part of the tooth block is provided with a tooth surface, penetrates through a preset hole of the backrest and is meshed with the rear rack.

As a further optimization scheme of the invention, a hand-pulling ring is arranged on the end part of the tooth block positioned in front of the backrest.

In a further preferred embodiment of the present invention, the backrest has a slide groove in a wall surface facing the rack, and the backrest engages with both side edges of the rack by the slide groove and can slide up and down along the rack when the tooth blocks are disengaged from each other.

As a further optimized scheme of the invention, the turnover mechanism comprises the turnover part motor, wherein a motor shaft of the turnover part motor is coaxially connected with a turnover part gear shaft, and the turnover part gear shaft is meshed with the turnover part toothed plate and drives the turnover part toothed plate to rotate.

As a further optimized scheme of the invention, the turning part toothed plate and the turning part gear shaft are provided with angle limiting mechanisms for limiting the maximum turning angle of the auxiliary seat plate.

As a further optimized scheme of the invention, the angle limiting mechanism comprises a spring stop block mechanism arranged on the gear shaft of the turning part and a clamping groove arranged on the toothed plate of the turning part; the end face of the gear shaft of the turning part is coaxially and movably provided with a first convex shaft, the end face of the toothed plate of the turning part is coaxially and fixedly provided with a second convex shaft, the peripheral surface of the second convex shaft is always in circumscribed contact with the first convex shaft, and the second convex shaft rotates around the first convex shaft in the gear transmission process; the spring stop block mechanism is embedded in the circumference of the first convex shaft and comprises a spring and a stop block from inside to outside, and the clamping groove is formed in the circumferential surface of the second convex shaft; in most cases, the stopper abuts against the circumferential surface of the second protruding shaft, and the spring is compressed and contracted; when the gear shaft of the turning part drives the toothed plate of the turning part to rotate to a specified angle, the spring stop block mechanism is aligned with the clamping groove, and the stop block pops out and is clamped in the clamping groove, so that the toothed plate of the turning part is limited.

As a further optimized scheme of the invention, the backrest is pivotally connected with the rear end of the supporting seat plate, a folding toothed plate is fixedly mounted on the backrest in a direction parallel to the pivoting shaft, a folding motor is arranged below the supporting seat plate, and the folding motor drives a folding gear shaft connected with the folding motor to rotate around the folding toothed plate in a meshing manner, so as to drive the supporting seat plate to turn towards the backrest, thereby playing a role of folding the seat.

As a further optimized scheme of the invention, the angle limiting mechanism is also arranged on the folding toothed plate and the folding gear shaft and is used for limiting the maximum folding angle of the supporting seat plate; the spring stop block mechanism is arranged on the end face of the folding part gear shaft, the clamping groove is arranged on the end face of the folding part toothed plate, when the folding part gear shaft rotates to a specified angle around the folding part toothed plate, the spring stop block mechanism is aligned with the clamping groove, and the stop block pops out and is clamped in the clamping groove, so that the maximum folding angle of the seat is limited.

As a further optimization scheme of the invention, supports are arranged below the front part and the rear part of the supporting seat plate, and two ends of a motor shaft of the turnover part motor and the motor shaft of the folding part motor are respectively installed on the supports through bearings.

Compared with the prior art, the invention has the beneficial effects that:

the invention applies the tooth-shaped meshing structure at a plurality of positions, and has superior performances of assembling stability, durability and the like, thereby carrying out lifting adjustment and angle adjustment on the seat plate;

firstly, the front end and the rear end of the backrest are respectively provided with the tooth block and the rack, a user only needs to pull outwards to loosen the tooth block and redetermine the meshing position to adjust the height of the backrest in real time, ingeniously, the lower end of the backrest is in pivot connection with the rear end of the seat plate, so that the lifting of the backrest can directly change the height of the rear end of the seat plate, the arrangement structure is simple and easy, the operation is convenient, the stable clamping performance can be provided, and the high-efficiency lifting adjustment capability can be particularly highlighted when the backrest faces special groups such as the old with poor physical strength and the like;

secondly, the double-layer seat plate is arranged, the bottom seat plate plays a supporting role, the top seat plate plays a pushing role, and the two seat plates are arranged in a stacked mode in normal use without influencing the experience of a user; when a user is difficult to get up, the auxiliary seat board positioned on the upper layer can be turned upwards and forwards under the action of gear transmission, so that certain auxiliary thrust is provided for the user from behind; on the basis, a spring stop block is additionally arranged on the turning mechanism of the auxiliary seat plate to realize the limiting function, so that overlarge pushing collision to a user is avoided, and the personal safety of the user is guaranteed;

furthermore, the invention also utilizes the gear transmission and the stop block limiting principle, a folding mechanism is arranged at the installation position of the double-layer seat plate, and the seat plate is automatically accommodated under the driving of a motor;

the invention starts from the physical characteristics of main audience groups, and the simple and firm movable connecting mechanisms are arranged on the backrest, the auxiliary seat board joint and the supporting seat board joint, so that the seat has the functions of flexible lifting, body-rising assistance and automatic storage.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is a schematic view of the latch tension spring mechanism of the present embodiment;

FIG. 3 is an exploded view of the latch tension spring mechanism of the present embodiment;

FIG. 4 is a partial sectional view of the present embodiment;

FIG. 5 is a schematic view showing the auxiliary seat board of the present embodiment turned up;

FIG. 6 is a schematic diagram illustrating the engagement between the first protruding shaft and the second protruding shaft of the present embodiment;

FIG. 7 is a schematic view illustrating the engagement between the first protruding shaft and the second protruding shaft of the present embodiment;

FIG. 8 is a schematic view of the present embodiment in a folded state;

in the drawings, 1-a backrest fixing bracket; 2-backrest; 3-a support base plate; 4-a handrail; 5-a rack; 6-latch tension spring mechanism; 6 a-a tooth block; 6 b-tooth flank; 6 c-a tension spring; 6 d-hand ring; 7-a chute; 8-auxiliary seat board; 9-overturning part toothed plates; 10-a front support; 11-a turning part motor; 12 a-a first bearing; 12 b-a second bearing; 13-a turnover gear shaft; 14-a first protruding shaft; 15-a second protruding shaft; 16-a card slot; 17-a spring stop mechanism; 17 a-a spring; 17 b-a stop; 18-angle stop mechanism; 19-folding toothed plate; 20-rear support; 21-a fold motor; 22-fold gear shaft; 23-a third protruding shaft; 24-a fourth protruding shaft; 25-connecting rod.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, the present embodiment provides a novel seat for the elderly, the seat includes a backrest fixing bracket 1, a backrest 2, a supporting seat plate 3 and armrests 4;

the backrest fixing support 1 is vertically placed and is fixedly installed on a wall body through conventional connecting pieces such as bolts, in a daily use state, the back surface of the backrest fixing support 1 faces the wall body, the front surface of the backrest fixing support faces the backrest 2, the front surface of the backrest fixing support is fixedly provided with an upright rack 5, the backrest 2 is provided with a latch tension spring mechanism 6 at a position facing the rack 5, and the latch tension spring mechanism 6 is in meshed connection with the rack 5;

specifically, referring to fig. 2 and 3, the latch tension spring mechanism 6 includes a tooth block 6a, two sides of the tooth block 6a are connected to the front wall of the backrest 2 by a tension spring 6c, one end of the tooth block 6a is provided with a tooth surface 6b, the end passes through a preset hole of the backrest 2 and is engaged with a rear rack 5, and a hand-pulling ring 6d is arranged at the end of the tooth block 5 located in front of the backrest 2; according to the structure, the tooth block 6a is movably mounted on the front wall of the backrest 2 through a tension spring 6c and extends to the rear part after penetrating through the backrest 2, the end face of the tooth block 6a located in the rear area of the backrest 2 can be meshed with the rack 5, a user only needs to lift the hand-pulling ring 6d to pull out the tooth block forward to enable the tooth block 6a and the rack 5 to be loosened, then the meshing position relative to the rack 5 is determined again, the height of the backrest 2 can be changed, the lower part of the backrest 2 is hinged to the rear end of the supporting seat plate 3, and therefore the rear end of the supporting seat plate 3 can be driven to lift, and the height of the seat can be adjusted within a certain range;

in actual conditions, an auxiliary device such as an electric or pneumatic push rod can be added to the tooth block 6a, so that the height adjustment of the seat can be realized more automatically.

In this embodiment, in order to prevent the backrest 2 from being detached from the wall body during lifting adjustment to cause the seat to topple, a plurality of sliding grooves 7 are fixedly arranged on the rear wall of the backrest 2, the sliding grooves 7 are groove-shaped with openings facing the rack 5, and the sliding grooves 7 are engaged with the two side edges of the rack 5 to play a role of sliding guide and limit the moving range of the backrest 2.

In addition to the flexible lifting, the auxiliary seat further has a function of assisting a user to get up smoothly, and in order to achieve the function, the auxiliary seat comprises an auxiliary seat plate 8, the shape and size of the auxiliary seat plate 8 are similar to the support seat plate 3, the two auxiliary seat plates are pivotally connected at the front end of the support seat plate 3, please refer to fig. 4, the auxiliary seat plate 8 is fixedly provided with an overturning portion toothed plate 9 along the axial direction of a connecting shaft, two front support seats 10 with the same height are arranged below the front end of the support seat plate 3, an overturning portion motor 11 is arranged between the two front support seats 10, a motor shaft of the overturning portion motor 11 is movably inserted into one of the front support seats 10 through a first bearing 12a and is connected with an overturning portion gear shaft 13, the overturning portion gear shaft 13 is meshed with the overturning portion toothed plate 9, the overturning portion motor 11 drives the overturning portion toothed plate 9 to rotate through a gear transmission manner, thereby driving the auxiliary seat plate 8 to turn upwards relative to the supporting seat plate 3. That is, in the sitting mode, the auxiliary seat plate 8 is stacked on the supporting seat plate 3; when the user needs to assist in sitting up, the motor 11 of the turning part can be started, and the auxiliary seat plate 8 can be turned forwards at a preset rotating speed to provide a certain pushing force from the back of the user.

Additionally, please refer to fig. 5, a first protruding shaft 14 is fixedly disposed on one side surface of the front support 10, an axis of the first protruding shaft 14 is collinear with a motor shaft of the turning part motor 11, a second protruding shaft 15 is coaxially and fixedly disposed on an end surface of the turning part toothed plate 9, the first protruding shaft 14 and the second protruding shaft 15 are in contact with each other in an externally tangent manner all the time, and the second protruding shaft 15 rotates around the first protruding shaft 14 in the gear transmission process;

referring to fig. 6, a spring stopper mechanism 17 is embedded in the circumference of the first protruding shaft 14, the spring stopper mechanism 17 includes a spring 17a and a stopper 17b from inside to outside along the radial line of the first protruding shaft 14, and a slot 16 sufficient for accommodating the stopper 17b is formed on the circumferential surface of the second protruding shaft 15; in most cases, the stopper 17b abuts against the circumferential surface of the second protruding shaft 15, and the spring 17a is compressed and contracted; when the gear shaft 13 of the turning part drives the toothed plate 9 of the turning part to rotate to a specified angle, the spring stopper mechanism 17 is aligned with the slot 16, and the stopper 17b is subsequently popped up and clamped into the slot 16, so that the toothed plate 9 of the turning part is limited, that is, the maximum turning angle of the auxiliary seat plate 8 is limited.

Of course, the relative position of the spring stop mechanism 17 and the locking slot 16 needs to be designed in advance to ensure that the spring stop mechanism 17 can be aligned with and effectively locked with the locking slot 16 when the auxiliary seat plate 8 is turned up to a certain angle, which is recommended to be 10-45 degrees relative to the horizontal plane, and the angle range is enough to jack up the buttocks of the user to assist the sitting up without pushing down; in order to avoid the idling of the turning part motor 11 in the clamping mode, the turning part motor 11 should be configured and connected with a limit switch to automatically break a circuit when collision occurs; the spring stop block mechanism 17 and the clamping groove 16 form an angle limiting mechanism, and the angle limiting mechanism 18 is used as a supplementary device for the turnover movement of the auxiliary seat board 8, so that the personal safety of a user can be guaranteed in the auxiliary sitting-up mode of the seat.

The gear transmission mechanism and the angle limiting mechanism 8 not only can act on the installation position of the auxiliary seat plate 8, but also can act on the installation position of the supporting seat plate 3 so as to drive the supporting seat plate 3 to turn up relative to the backrest 2, thereby achieving the effect of folding and containing the seat.

Specifically, the backrest 2 is pivotally connected to the rear end of the supporting seat plate 3, similarly to the arrangement of the auxiliary seat plate 8 and the front end of the supporting seat plate 3, a folding toothed plate 19 is fixedly installed on the backrest 2 along the axial direction of the pivot shaft, two rear supports 20 with the same height are arranged below the rear end of the supporting seat plate 3, a folding motor 21 is arranged between the two rear supports 20, a motor shaft of the folder motor 21 is movably inserted into one of the rear brackets 20 through a second bearing 12b and coupled with a folder gear shaft 22, the folding gear shaft 22 is engaged with the folding toothed plate 19, the folding motor 21 drives the folding toothed plate 19 to rotate in a gear transmission manner, thereby driving the supporting seat plate 3 to turn toward the backrest 2, and playing the role of folding the seat (see fig. 8).

Similarly, referring to fig. 7, a third protruding shaft 23 is fixedly arranged on one side surface of the rear support 20, an axis of the third protruding shaft 23 is collinear with a motor shaft of the folding portion motor 21, a fourth protruding shaft 24 is coaxially and fixedly arranged on an end surface of the folding portion toothed plate 19, the third protruding shaft 23 and the fourth protruding shaft 24 are in circumscribed contact all the time, and the third protruding shaft 23 rotates around the fourth protruding shaft 24 to climb in the gear transmission process;

a spring stop block mechanism 17 is also embedded in the circumference of the third protruding shaft 23, and a clamping groove 16 which is enough to accommodate the stop block 17b is also arranged on the circumferential surface of the fourth protruding shaft 24; in most cases, the stopper 17b abuts against the circumferential surface of the fourth protruding shaft 24, and the spring 17a is compressed and contracted; when the folding gear shaft 22 drives the folding toothed plate 19 to rotate to a designated angle, the spring stopper mechanism 17 is aligned with the slot 16, and the stopper 17b is ejected and clamped into the slot 16, so as to limit the folding toothed plate 19; likewise, in order to avoid the idle rotation of the folder motor 21 in the engagement mode, the folder motor 21 should be configured with a limit switch connected to automatically open the circuit in the event of a collision; the angle limiting mechanism 18 is used for limiting the maximum turning-up angle of the supporting seat plate 3 in the process of folding the seat, so as to ensure that the supporting seat plate 3 is close to the backrest 2 as much as possible and is not excessively abutted against the backrest 2, thereby protecting the service quality of two plate surfaces and the folding part motor 21 and bringing more intelligent experience for users.

Because the device mainly faces special groups such as the old, the arrangement of the handrail 4 is indispensable, therefore the device is provided with the handrail 4 in a hinged mode on the basis of folding and storage. In this embodiment, the armrest 4 is hinged to the backrest 2 at the rear end and hinged to the supporting seat plate 3 at the front end through the connecting rod 25, so that a quadrilateral structure can be formed among the backrest 2, the armrest 4, the connecting rod 25 and the supporting seat plate 3, so that the armrest 4 can be stably arranged in the seat unfolding stage; when the folding motor 21 drives the supporting seat plate 3 to rise, the armrest 4 and the connecting rod 25 can be folded up.

Finally, it is added that although the flip tooth plate 9 and the folding tooth plate 19 of the present device are coaxial with the mounting shaft of the auxiliary seat plate 8 and the mounting shaft of the supporting seat plate 3, the flip tooth plate 9 and the folding tooth plate 19 do not protrude above the corresponding seat plate, nor do they indicate that the tooth plates must be disposed in the corresponding seat plate sidelines. Preferably, when the diameter of the turning part toothed plate 9/folding part toothed plate 19 is larger due to factors such as transmission ratio, the outside of the turning part toothed plate 9/folding part toothed plate 19 should be provided with a protective shell to prevent direct scraping to the skin of the human body; when the meshing strength of the turning portion toothed plate 9/the folding portion toothed plate 19 is sufficient, it can be disposed at both sides of the corresponding auxiliary seat plate 8/the supporting seat plate 3, even only at one side of the auxiliary seat plate 8/the supporting seat plate 3, so as to reduce the contact of the transmission device with the user as much as possible, reduce the accidental risk, and improve the economic performance.

The working process of the present embodiment is briefly described here:

referring to fig. 8, in a normal state, the seat can be folded and contracted as shown in the figure and is vertically fixed on a wall body through the backrest 2; in the working mode, a user switches on the power supply of the folding part motor 21 through a control device (not shown in the figure) matched with the seat, the folding part motor 21 rotates clockwise and drives the folding part gear shaft 21 to rotate around the folding part toothed plate 19 in the same direction, so as to drive the supporting seat plate 3 to turn downwards and unfold until the front seat 10 and the rear seat 20 at the bottom of the supporting seat plate 3 abut against the ground, a limit switch configured on the folding part motor 21 immediately switches off the circuit, the folding part motor 21 stops operating, and the supporting seat plate 3 unfolds to the horizontal position; when the user finishes using and needs to store the seat again, the user starts the folding part motor 21 again through the control device, the folding part motor 21 rotates anticlockwise according to preset parameters and drives the folding part gear shaft 21 to rotate in the same direction around the folding part toothed plate 19 so as to drive the supporting seat plate 3 to turn upwards, when the folding part motor 21 turns to the stop block 17b of the third convex shaft 23 and is clamped into the clamping groove 16 of the fourth convex shaft 24, the folding part motor 21 is clamped, the limit switch arranged on the folding part motor is further disconnected with a circuit, and the seat is folded completely;

in supplementary mode of sitting up, the user switches on through controlling means the power of upset portion motor 11, upset portion motor 11 takes place counter-clockwise turning and passes through upset portion gear shaft 13 drives upset portion pinion rack 9 clockwise turning, thereby drives supplementary bedplate 8 is upwards turned, when dog 17b card of first protruding axle 14 advances the draw-in groove 16 of second protruding axle 15, upset portion motor 11 card dies, and the limit switch of its configuration breaks off the circuit immediately, and the user restarts after getting up upset portion motor 11 makes its reversal in order to order about supplementary bedplate 8 resets, perhaps adopts time relay to order about after appointed duration again and resets.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

Claims

1. The utility model provides a novel old man's auxiliary seat chair, includes back, supporting seat board and handrail, its characterized in that: the backrest is pivoted with the rear end of the supporting seat plate, an upright rack is arranged behind the backrest, a tooth block meshed with the rack is arranged on the backrest, and the heights of the backrest and the rear end of the supporting seat plate can be adjusted by changing the meshing position of the tooth block relative to the rack;

2. The new booster seat for the elderly according to claim 1, characterized in that: the back realizes altitude mixture control through latch extension spring mechanism, latch extension spring mechanism is including tooth piece and extension spring, the tooth piece both sides adopt the extension spring with the back is connected, the tip of tooth piece is equipped with the flank of tooth, and this tip passes the preset hole site of back and with the rear the rack meshes.

3. The new booster seat for the elderly according to claim 2, characterized in that: the tooth block is positioned on the end part in front of the backrest and is provided with a hand-pulling ring.

4. The new booster seat for the elderly according to claim 3, characterized in that: the backrest is provided with a sliding groove on the wall surface facing the rack, the backrest is clamped on two side edges of the rack through the sliding groove, and the backrest can slide up and down along the rack under the condition that the tooth blocks are disengaged.

5. The new booster seat for the elderly according to claim 1, characterized in that: the turnover mechanism comprises a turnover part motor, wherein a turnover part gear shaft is coaxially connected with a motor shaft of the turnover part motor, and the turnover part gear shaft is meshed with the turnover part toothed plate and drives the turnover part toothed plate to rotate.

6. The new booster seat for the elderly according to claim 5, wherein: the overturning part toothed plate and the overturning part gear shaft are provided with angle limiting mechanisms.

7. The new booster seat for the elderly according to claim 6, wherein: the angle limiting mechanism comprises a spring stop block mechanism arranged on the gear shaft of the turning part and a clamping groove arranged on the toothed plate of the turning part; the end face of the gear shaft of the turning part is coaxially and movably provided with a first convex shaft, the end face of the toothed plate of the turning part is coaxially and fixedly provided with a second convex shaft, the peripheral surface of the second convex shaft is always in circumscribed contact with the first convex shaft, and the second convex shaft rotates around the first convex shaft in the gear transmission process;

the spring stop block mechanism is embedded in the circumference of the first convex shaft and comprises a spring and a stop block from inside to outside, and the clamping groove is formed in the circumferential surface of the second convex shaft; in most cases, the stopper abuts against the circumferential surface of the second protruding shaft, and the spring is compressed and contracted; when the gear shaft of the turning part drives the toothed plate of the turning part to rotate to a specified angle, the spring stop block mechanism is aligned with the clamping groove, and the stop block is popped out and clamped in the clamping groove.

8. The new booster seat for the elderly according to claim 7, wherein: the backrest is connected with the rear end of the supporting seat plate through a pivot, a folding toothed plate is fixedly mounted on the backrest in a direction parallel to the pivot shaft, a folding motor is arranged below the supporting seat plate, and the folding motor drives a folding gear shaft connected with the folding gear shaft to rotate around the folding toothed plate in a meshed mode so as to drive the supporting seat plate to turn in the direction of the backrest.

9. The new booster seat for the elderly according to claim 8, wherein: the folding toothed plate and the folding gear shaft are also provided with the angle limiting mechanism for limiting the maximum folding angle of the supporting seat plate; the spring stop block mechanism is arranged on the end face of the folding part gear shaft, the clamping groove is arranged on the end face of the folding part toothed plate, when the folding part gear shaft rotates to a specified angle around the folding part toothed plate, the spring stop block mechanism is aligned with the clamping groove, and the stop block pops out and is clamped in the clamping groove.

10. The new booster seat for the elderly according to claim 9, wherein: and supports are arranged below the front part and the rear part of the supporting seat plate, and two ends of a motor shaft of the turnover part motor and two ends of a motor shaft of the folding part motor are respectively installed on the supports through bearings.