CN111870168A

CN111870168A - Seat type washing aid device

Info

Publication number: CN111870168A
Application number: CN202010874812.4A
Authority: CN
Inventors: 杨金林; 张谦; 王丙旭; 沈渠铭; 顾***
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT; Zhejiang Sci Tech University ZSTU; Zhejiang University of Science and Technology ZUST
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2020-11-03

Abstract

A chair type rubbing and washing integrated bath chair assisting old people in rubbing and washing shoulders and backs comprises a chair type outer frame, a shoulder rubbing and washing device, a back rubbing and washing device, a rising assisting device and an electric control system, wherein the chair type outer frame comprises a backrest frame and a chair frame, the shoulder rubbing and washing device and the back rubbing and washing device are sequentially installed on the backrest frame from top to bottom, a cushion outer frame of the chair frame and a movable inner chair surface form the cushion outer frame, spraying is installed on a support on the left side of the chair frame, and the electric control system is connected with the shoulder rubbing and washing device and the back rubbing and washing device through a shoulder adjusting device respectively. The invention provides a chair type rubbing and washing integrated bath chair for assisting the rubbing and washing of the shoulders and the back of the old, which not only solves the problem of daily bath safety of the old, but also meets the daily bath requirements of the old, has a better rubbing and washing effect, can promote the body health of the old, meets the lifting requirements of the weak old and has better man-machine relationship.

Description

Seat type washing aid device

Technical Field

The invention relates to the technical field of old people care products, in particular to a chair type rubbing and rising-assisting bathing chair for assisting the rubbing and rising of shoulders and backs of old people.

Background

Bathing is a behavior activity which is not common in daily life, but becomes very difficult for old people, especially for old people with high ages or physical inconvenience, due to inflexible action, physical function degradation and the like, and meanwhile, according to reliable investigation, the old people mostly cause difficulty in standing due to osteoporosis, quadriceps muscle weakness and other diseases along with the increase of age. In consideration of assisting the elderly to bathe, people also have designed a variety of different kinds of elderly bathing assisting devices with different functions. Traditional mechanical type old person auxiliary assembly function singleness, if old person's special bath chair of antiskid, it is the chair that has anti-skidding function really. Although the occurrence of accidents during bathing is reduced, the product does not have any auxiliary bathing function, and the difficulty of bathing is increased while sitting; in addition, for the old, the special bathing brush for the old can help the old to scrub the back and the shoulders, but for the old, the four limbs are not flexible enough, so that the old is very strenuous to use, the comfort is poor and the scrubbing effect is not obvious. In recent years, fully automatic devices for assisting bathing are increasing, but the devices are difficult to popularize in mass families due to the large volume and high price. Meanwhile, these full-automatic bathing devices are not built for specific people and have universality, so that some functions and structures are not suitable for the elderly and have defects on specific functions, and the safety and comfort of the elderly during bathing cannot be guaranteed.

Disclosure of Invention

In order to overcome the defects of the existing bathing device, the invention provides the chair type rubbing and rising-assisting bathing chair for assisting the rubbing and rising of the shoulders and the back of the old, which not only solves the daily bathing safety of the old, but also meets the daily bathing requirement of the old, has better rubbing and washing effect and can promote the health of the old.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a chair type rubbing and washing integrated bathing chair assisting old people in rubbing and washing shoulders and backs comprises a chair type outer frame, a shoulder rubbing and washing device, a back rubbing and washing device, a rising assisting device and an electric control system, wherein the chair type outer frame comprises a backrest frame and a chair type outer frame, the shoulder rubbing and washing device and the back rubbing and washing device are sequentially installed on the backrest frame from top to bottom, the chair type outer frame comprises the chair outer frame and an inner chair plate, spraying is arranged on a left side armrest of the chair type outer frame, and the electric control system is respectively connected with the shoulder rubbing and washing device and the back rubbing and washing device through a shoulder adjusting device;

the shoulder rubbing device comprises a shoulder rubbing device bottom plate, a lifting adjusting mechanism and a shoulder rubbing mechanism, the shoulder rubbing device bottom plate is fixed on a backrest frame, the lifting adjusting mechanism comprises a T-shaped lead screw sleeve group, a motor, a synchronous belt group, a front side plate and a middle layer plate, the T-shaped lead screw sleeve group is installed on the shoulder rubbing device bottom plate and comprises two optical axis slider assemblies and a lead screw nut mechanism, the two optical axis slider assemblies are respectively arranged on the left side and the right side of the lead screw nut mechanism, each optical axis slider assembly comprises a shoulder vertical optical axis and a shoulder optical axis slider, the shoulder vertical optical axis is fixedly installed on the shoulder rubbing device bottom plate, the shoulder optical axis slider can be vertically slidably installed on the shoulder vertical optical axis, a ball lead screw of the lead screw nut mechanism is vertically arranged, the upper end of the ball lead screw is connected with the synchronous belt group, the middle layer plate is fixed on a nut connector of, the front side plate is positioned on the front side of the middle layer plate and is connected with the middle layer plate through a lifting platform supporting section bar; the shoulder scrubbing mechanism comprises two shoulder scrubbing units which move reversely at a constant speed; each shoulder scrubbing unit comprises a shoulder speed reducing motor, two shoulder scrubbing contacts and two synchronous belt transmission mechanisms, the two synchronous belt mechanisms are connected through a coupler, the synchronous belt transmission mechanisms are fixed on a bottom plate of the shoulder scrubbing device and comprise a direct current speed reducing motor, a duplex synchronous belt pulley and two synchronous belt pulleys, the duplex synchronous belt pulleys are respectively connected with the synchronous belt pulleys on two sides of the duplex synchronous belt pulley through synchronous belts, the shoulder speed reducing motor is installed on a middle layer plate through a motor support, an output shaft of the shoulder speed reducing motor is connected with one end of the synchronous belt transmission mechanism, the two shoulder scrubbing contacts are located on the front side of a front side plate and installed on corresponding shoulder supporting rotating shafts, and the two shoulder scrubbing contacts are connected with the other end of the; the back cushion is positioned above the shoulder scrubbing contact and is arranged on the front side plate; the shoulder speed reducing motor drives one end of the synchronous belt transmission mechanism to rotate, so as to drive synchronous belt wheels at two ends of the synchronous belt transmission mechanism to rotate, and the synchronous belt wheels at two ends drive the shoulder scrubbing contact to rotate, so that the rotating kneading and scrubbing of the shoulder are realized;

the back rubbing device comprises a back rubbing mechanism, a horizontal moving mechanism, a vertical moving mechanism and a back rubbing device bottom plate, the back rubbing mechanism is installed on the back rubbing device bottom plate through the horizontal moving mechanism, the back rubbing device bottom plate is installed on the vertical moving mechanism, the back rubbing mechanism comprises a plurality of back rubbing units and a rubbing ball supporting plate, through holes with the same number as the back rubbing units are formed in the rubbing ball supporting plate, each back rubbing unit is installed on the corresponding through hole in a manner that the back rubbing unit can stretch forwards and backwards through a shaft sleeve, each back rubbing unit comprises a back rubbing ball, a spring and a back rubbing ball supporting rod, the back rubbing balls are fixed at the front ends of the rubbing ball supporting rods, the rear ends of the rubbing ball supporting rods penetrate through the shaft sleeves on the corresponding through holes and form a front-back sliding pair with the shaft sleeves, and the rear ends of the rubbing ball supporting rods are connected and screwed with hexagon bolts, the spring is sleeved on the rubbing ball supporting rod, the front end of the spring is connected with the back rubbing ball, and the rear end of the spring is connected with the rubbing ball supporting plate; when bathing, the back scrubbing unit can adjust the compression degree of the spring according to the extrusion of the back of the human body, so that the back of the human body is wrapped, and a better scrubbing effect is achieved through extrusion scrubbing.

The lifting assisting device comprises a chair seat lifting mechanism and a handrail linkage lifting mechanism, the chair seat lifting mechanism is fixed on a bracket of a chair back foot and comprises two triangular brackets, an electric push rod and a movable inner chair seat, the movable inner chair seat is connected with an outer frame through a hinge mechanism, a linkage rod group is positioned at the upper end of the outer frame and is connected with the outer frame through a movable hinge to form a parallelogram, and the electric push rod pushes the movable chair seat to rotate so as to realize the lifting of the inner chair seat; the armrest linkage lifting mechanism is located at the upper end of the seat and comprises a connecting rod mechanism and an armrest main body, the connecting rod is connected with the movable inner seat and a linkage rod group, the armrest main body is fixed on the linkage rod, the lifting displacement of the inner seat drives the linkage rod group to rotate through the connecting rod, so that the armrest is driven to be lifted, and a user can lift the armrest through the support of the armrest.

Further, electrical system includes core control panel and motor drive module, adjusting device includes potentiometre and adjustment button, and adjustment button passes through the potentiometre and is connected with the core control panel, the core control panel is connected with motor drive module and power module respectively, motor drive module is connected with shoulder gear motor.

Still further, the vertical moving mechanism comprises two back vertical optical axes, back vertical optical axis sliders, two electric push rods and a first travel switch, the two back vertical optical axes are mounted on the backrest frame, the two electric push rods are respectively arranged below two ends of the rubbing ball supporting plate, each electric push rod is fixed at the bottom of the seat type outer frame through a push rod supporting bottom plate, the upper end of each electric push rod is connected with the back rubbing device bottom plate through a section bar, the left end and the right end of the back rubbing device bottom plate are respectively fixed on the back vertical optical axis sliders through back slider fixing plates, each back vertical optical axis slider is respectively sleeved on the back vertical optical axis on one corresponding side, the upper end and the lower end of one back vertical optical axis are respectively provided with the first travel switch, the first travel switches are mounted on the backrest frame, and the electric push rods push the back rubbing device bottom plate to move along the back vertical optical, thereby realizing the extrusion scrubbing of the back scrubbing mechanism in the vertical direction; the first travel switch is connected with the core control panel.

Still further, the horizontal moving mechanism comprises a back speed reduction motor, a back gear, a rack, a back horizontal optical axis slider and a second travel switch, the back horizontal optical axis is installed on a back scrubbing device bottom plate, the scrubbing ball support plate is installed on the back horizontal optical axis through the back horizontal optical axis slider, the back speed reduction motor is installed on the back scrubbing device bottom plate, an output shaft of the back speed reduction motor is connected with the back gear, the back gear is meshed with the rack, the rack is fixedly installed on the upper edge of the scrubbing ball support plate, the second travel switches are respectively arranged on the left side and the right side of the back horizontal optical axis, and the second travel switches are installed on the backrest frame to enable the scrubbing ball support plate to translate within a set travel range;

the second travel switch is connected with the core control panel, and the back speed reduction motor is connected with the motor driving module.

The invention has the following beneficial effects: the chair type design is adopted, so that the old can finish bathing in a sitting posture; the shoulders adopt the massage teeth contact head, and the rotating kneading type rubbing is used for rubbing the shoulders, so that a certain massage and relaxation effect is achieved; the back adopts a wrapped elastic contact, the wrapped scrubbing of the back is realized by translational extrusion in the vertical and horizontal directions, and a good scrubbing effect is achieved while the back is matched with a back curve; the invention helps the old to realize effective scrubbing of the part which is difficult to scrub. Through the constant-speed radial propulsion of the two electric push rods positioned on the rear chair legs, the soft force and the mechanism motion stability during the lifting assistance are ensured. The chair surface drives the lifting of people's buttock, and the chair surface drives the handrail through the gangbar, and people's accessible armpit supports the mode and helps standing, makes to help to rise more convenient feasible.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the back scrubbing apparatus.

Fig. 3 is a schematic structural view of the back scrubbing unit.

Fig. 4 is a schematic view of the overall structure of the shoulder scrubbing device.

Fig. 5 is a schematic view of the internal transmission structure of the shoulder scrubbing device.

Fig. 6 is a schematic view of a lift adjusting mechanism of the shoulder scrubbing apparatus.

Fig. 7 is a schematic view of the overall structure of the lifting aid.

Fig. 8 is a power transmission schematic diagram of the assist apparatus.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

Referring to fig. 1 to 8, a chair type rubbing and rising-assisting bathing chair for assisting in rubbing and rising shoulders and backs of old people comprises a chair type outer frame 7, a shoulder rubbing device, a back rubbing device, a rising-assisting device and an electric control system, wherein the shoulder rubbing device, the back rubbing device and the electric control system are sequentially installed on the chair type outer frame 7 from top to bottom, and the shoulder rubbing device realizes rotary rubbing and washing of shoulders through constant-speed reverse movement of two shoulder rubbing units on two sides; the back scrubbing device realizes the translational extrusion scrubbing of the back by translating in the vertical and horizontal directions and being assisted by a wrapping type elastic contact which can adapt to the back. The lifting-assisting device provides power through two electric push rods arranged on the rear feet to drive the movable inner chair surface to rotate, and drives the armrests through the linkage rod group, so that two points of lifting from the hip and the armpit are realized. The electric control system controls the motor, so that the function of controlling the shoulder and back rubbing device to assist the old in back rubbing is achieved.

The chair type outer frame is built by 2020 sectional materials and comprises a backrest frame 1 and a chair type outer frame 7, wherein the shoulder rubbing device, the back rubbing device and the electric control system are sequentially installed on the bathing chair backrest frame 1 from top to bottom, and the back rubbing device bottom plate 2 and the electric push rod 10 are fixed at the bottom of the backrest frame 1. The end part of the seat type outer frame 7 is connected with the partial section bar of the backrest outer frame at the bottom of the back scrubbing device, and is used for supporting the whole scrubbing and washing-assisted bathing chair. The seat type outer frame 7 is partially fixed with an inner seat 50, sectional materials on two sides serve as the armrests 6, a support on the left side of the seat comprises a base 34, a connecting transverse seat 32 and a connecting seat 31, a spraying device 33 is mounted on the support, the position of the spraying device 33 can be freely adjusted according to requirements, and the whole body can be conveniently washed.

The electric control system comprises a core control board and a motor driving module, wherein the core control board is an STM32103 single chip microcomputer, and the motor driving module controls the shoulder speed reducing motor and the back speed reducing motor to realize functions. Wherein, the left and right ends of the shoulder are respectively provided with a 300r/min shoulder speed reducing motor 27 for controlling the rotating kneading and scrubbing of the shoulder scrubbing contact, the back is provided with a 70r/min back speed reducing motor 41 for controlling the horizontal direction translational motion of the back scrubbing device, and the two sides are respectively provided with an electric push rod 12 for controlling the vertical direction motion of the back scrubbing device, thereby realizing the translational extrusion scrubbing. In addition, the first travel switch and the second travel switch can control the travel of vertical and horizontal translation motion and are respectively connected with the core control board, and the potentiometer can control the rotating speed of the shoulder scrubbing contact and the moving speed of the back scrubbing device in the vertical and horizontal directions, so that the scrubbing requirements of different old people are met.

As shown in fig. 2, the back scrubbing device includes a back scrubbing mechanism, a horizontal moving mechanism, a vertical moving mechanism, and a back scrubbing device bottom plate 8. The back scrubbing mechanism comprises a plurality of back scrubbing units 13, shaft sleeves and a scrubbing ball supporting plate 19, through holes with the same number as the back scrubbing units are formed in the scrubbing ball supporting plate 19, and each back scrubbing unit is arranged on the corresponding through hole in a front-back telescopic mode through the shaft sleeves; the vertical moving mechanism comprises a back vertical optical axis, a back vertical optical axis sliding block fixing plate 38, an electric push rod 42, a push rod supporting base plate 39 and a first travel switch 9; the horizontal moving mechanism comprises a back gear 11 and a rack 16, a back horizontal optical axis 14 and a back horizontal optical axis slider, a back speed reduction motor 41 and a second travel switch.

The 54 shaft sleeves are sleeved in the 54 through holes with the diameter of 10mm on the rubbing ball supporting plate 19 through tolerance fit. As shown in fig. 3, each of the back scrubbing units is composed of a back scrubbing ball 17, a spring 35, and a back scrubbing ball support bar 36. The back rubbing ball 17 is fixed on the rubbing ball support rod, the back rubbing ball support rod 36 is sleeved on the rubbing ball support plate 19 fixed with the shaft sleeve 37, a spring 35 is sleeved on the rubbing ball support rod part between the rubbing ball and the rubbing ball support plate 19, and the end part of the back rubbing ball support rod 36 is screwed by a hexagon bolt; the spring 35 is sleeved on the rubbing ball support rod 19, the front end of the spring 35 is connected with the back rubbing ball 17, and the rear end of the spring is connected with the rubbing ball support plate 19. When bathing, the back scrubbing unit can adjust the compression degree of the spring 35 according to the extrusion of the back of the human body, so that the back of the human body is wrapped, and a better scrubbing effect is achieved through extrusion scrubbing.

The electric push rod 12 is fixed at the bottom of the seat type outer frame and is connected with the back scrubbing device bottom plate 8 through a section bar. The left end and the right end of the back scrubbing device bottom plate 8 are fixed on back vertical optical axis sliders through back slider fixing plates 38 respectively, each back vertical optical axis slider is sleeved on a back vertical optical axis on one corresponding side respectively, a first travel switch is arranged at each of the upper end and the lower end of one back vertical optical axis and mounted on a back frame, and the electric push rod 12 pushes the back scrubbing device bottom plate 8 to move along the back vertical optical axis, so that the back scrubbing device is extruded and scrubbed in the vertical direction.

The horizontal moving mechanism comprises a back speed reducing motor 41, a back gear 11, a rack 16, a back horizontal optical axis 18, a back horizontal optical axis slider and a second travel switch. The back horizontal optical axis slider 40 is fixed on the rubbing ball support plate 19, and the rubbing ball support plate 19 can translate in the horizontal direction through a moving pair formed by the back horizontal optical axis fixed on the back rubbing device bottom plate 8. An output shaft of the back speed reducing motor 41 penetrates through the back scrubbing device bottom plate 8 and is connected with the back gear 11 through a coupler, the rack is fixedly installed on the upper edge of the scrubbing ball support plate 19, the back gear is meshed with the rack, and the back gear 11 can move along the horizontal direction of the rack 16, so that the scrubbing ball support plate 19 can move horizontally along the horizontal optical axis 14. Meanwhile, a second travel switch is respectively arranged on the left side and the right side of the back horizontal optical axis 18, and the second travel switches are installed on the backrest frame, so that the rubbing ball support plate 19 can move horizontally within a set travel range.

As shown in fig. 4, 5 and 6, the shoulder scrubbing device comprises a bottom plate 2 of the shoulder scrubbing device, a lifting adjusting mechanism, a shoulder scrubbing mechanism and a back cushion 3. The bottom plate 2 of the shoulder scrubbing device is fixed on the backrest frame 1.

The lifting adjusting mechanism comprises a T-shaped lead screw sleeve group, a synchronous belt mechanism 4, a lifting platform supporting section bar 22, a front side plate 20 and a middle layer plate 21. Four holes with the diameter of 40mm are horizontally arranged on the front side plate 20 every 50mm for passing through the shoulder rubbing mechanism. The front side plate 20 is connected with the upper surface of the middle layer plate 21 through four lifting platform supporting section bars 22, and the three are fixed through L-shaped supports. The T-shaped lead screw set comprises two shoulder optical axes 23, two shoulder optical axis sliders 24, a nut holder connector 25 and a ball screw 26. The shoulder optical axis 23 and the ball screw 26 are fixed at the center of the bottom plate 2 of the shoulder scrubbing device through a base, and a hole on the bottom plate 2 of the shoulder scrubbing device is a waist hole, so that when the mechanism is lifted at the back, a synchronous belt mechanism on the bottom plate cannot move due to interference of the optical axis; two shoulder optical axis sliders 24 and a nut base connector 25 of the T-shaped lead screw sleeve set are fixed on the middle layer plate 21. The synchronous belt mechanism 4 is connected with the ball screw 26 of the T-shaped screw rod sleeve group through an optical axis. The shoulder optical axis slide block 24 and the nut seat move relatively on the shoulder optical axis 23 and the ball screw 26 by rotating the synchronous belt mechanism 4, so that the lifting adjustment of the back scrubbing device is realized.

The shoulder scrubbing mechanism comprises two shoulder scrubbing units, each shoulder scrubbing unit comprises two shoulder scrubbing contacts, two shoulder supporting rotating shafts, a coupler, a shoulder speed reducing motor, a motor support and a synchronous belt mechanism, and the synchronous belt mechanism comprises an optical axis, four synchronous belt wheels and two synchronous belts. The shoulder rubbing contact consists of a disc-shaped support head printed in a 3D mode and a TEP massage head with dense massage teeth, through holes in a circular array are formed in the support head, rubbing balls 15 are arranged on the through holes, and a massage function is provided after rubbing. Four shoulder rubbing contacts 4 are fixed respectively the front end of shoulder supporting shaft, and four shoulder supporting shafts are placed in the hole of 40mm on the preceding curb plate and have run through middle lamella and back rubbing device bottom plate 8, gear motor 27 passes through shaft coupling 28 and connects optical axis 29, and optical axis connects pair synchronous pulley 30, and pair synchronous pulley is connected with the synchronous pulley of both sides through the hold-in range, and the rotation through gear motor drives the rotation of optical axis, and the rotation of optical axis has driven the synchronous pulley of its both sides and has rotated to drive the rotation of shoulder rubbing contact, realize the kneading and rubbing of shoulder, back cushion 3 is fixed on preceding curb plate 20, is located the top of shoulder rubbing unit.

The chair seat lifting mechanism comprises a rear foot support, an electric push rod group, a chair seat outer frame, a movable inner chair seat and a handrail linkage lifting mechanism. The rear foot support is in corner joint with the corner joint through three aluminum profiles 2020 in a matching way, the electric push rod group comprises an electric push rod support 42 and an electric push rod 43, the electric push rod support and the electric push rod support 42 are in coaxial matching through a pin shaft by the bottom of the electric push rod 43 and a hole in the electric push rod support 42, the electric push rod group has single-shaft rotation freedom degree, the top of the electric push rod is matched with a top support 51 connected to the inner chair surface, so that the electric push rod and the inner chair surface can be in free linkage, the outer chair surface frame is connected with the rear foot support through three aluminum profiles 2020 in a matching way of corner joint and 108 degrees, the inner chair surface comprises a chair surface 44 and a movable long hinge 48, the inner chair surface is connected with the outer chair surface frame through the movable long hinge 48, the double-linkage rod group is respectively connected with the armrest 45 and the inner chair surface through the movable hinges 46 and 47, the connection result is, the connecting rod 50 drives the double-link group 49 to rotate by lifting the inner chair seat, thereby driving the armrests to lift; the inner seat surface hinge 48 is driven to rotate by the radial pushing of the electric push rod group, and the bracket 42 is connected with the electric push rod group and the inner seat surface to prevent the mechanism from being locked; after bathing is finished, the chair surface lifting mechanism can support the buttocks of a person through lifting of the inner chair surface, the armrest linkage lifting mechanism drives the armrests by utilizing the power of the inner chair surface, two points which take the buttocks and the armpits as main supporting points are lifted, and therefore the lifting action of the chair surface lifting mechanism is achieved.

The invention fully considers the inconvenience of bathing for the old. The old can sit on the bath chair to take a bath, thereby reducing the walking frequency during the bath and greatly reducing the possibility of accidents such as slipping and the like during the bath. Meanwhile, the shoulder and back rubbing device of the bathing chair can help the old people to realize mechanical rubbing of the shoulders and the back. The data shows that the mechanical rubbing is beneficial to the smooth of human body. Modern medicine proves that: the kneading of the shoulder and the back can stimulate the immune cells with strong subcutaneous functions, improve the immunity and disease resistance of the organism and further harmonize the internal organs and tissues of the whole body. Meanwhile, the design of the massage teeth of the shoulder rubbing contact can realize rotary kneading massage and rubbing of the shoulders, the elastic rubbing contact on the back can realize wrapping type extrusion rubbing of the back of a human body, and the shoulder rubbing contact has better comfort and rubbing effect.

The above description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention, and the structures described in the present specification and the accompanying drawings can be directly or indirectly applied to other related technical fields, and shall be included in the scope of the present invention.

Claims

1. A seat type washing-assistant device is characterized in that: the chair type outer frame comprises a backrest frame and a chair frame, the shoulder scrubbing device and the back scrubbing device are sequentially arranged on the backrest frame from top to bottom, the chair frame comprises an outer seat frame and an inner chair plate, a left side armrest of the chair frame is provided with spraying, and the electric control system is respectively connected with the shoulder scrubbing device and the back scrubbing device through a shoulder adjusting device;

the back rubbing device comprises a back rubbing mechanism, a horizontal moving mechanism, a vertical moving mechanism and a back rubbing device bottom plate, the back rubbing mechanism is installed on the back rubbing device bottom plate through the horizontal moving mechanism, the back rubbing device bottom plate is installed on the vertical moving mechanism, the back rubbing mechanism comprises a plurality of back rubbing units and a rubbing ball supporting plate, through holes with the same number as the back rubbing units are formed in the rubbing ball supporting plate, each back rubbing unit is installed on the corresponding through hole in a manner that the back rubbing unit can stretch forwards and backwards through a shaft sleeve, each back rubbing unit comprises a back rubbing ball, a spring and a back rubbing ball supporting rod, the back rubbing balls are fixed at the front ends of the rubbing ball supporting rods, the rear ends of the rubbing ball supporting rods penetrate through the shaft sleeves on the corresponding through holes and form a front-back sliding pair with the shaft sleeves, and the rear ends of the rubbing ball supporting rods are connected and screwed with hexagon bolts, the spring is sleeved on the rubbing ball supporting rod, the front end of the spring is connected with the back rubbing ball, and the rear end of the spring is connected with the rubbing ball supporting plate; when bathing, the back scrubbing unit can adjust the compression degree of the spring according to the extrusion of the back of the human body, so that the back of the human body is wrapped, and a better scrubbing effect is achieved through extrusion scrubbing;

2. A seat type washing-assistant device is characterized in that: the electric control system comprises a core control panel and a motor driving module, the adjusting device comprises a potentiometer and an adjusting button, the adjusting button is connected with the core control panel through the potentiometer, the core control panel is respectively connected with the motor driving module and a power supply module, and the motor driving module is connected with a shoulder speed reducing motor.

3. A chair-type washing aid as claimed in claim 2, wherein: the vertical moving mechanism comprises two back vertical optical axes, back vertical optical axis sliding blocks, two electric push rods and a first travel switch, the two back vertical optical axes are installed on the backrest frame, the two electric push rods are respectively arranged below two ends of the rubbing ball supporting plate, each electric push rod is fixed at the bottom of the seat frame through a push rod supporting bottom plate, the upper end of each electric push rod is connected with the back rubbing device bottom plate through a section bar, the left end and the right end of the back rubbing device bottom plate are respectively fixed on the back vertical optical axis sliding blocks through back sliding block fixing plates, each back vertical optical axis sliding block is respectively sleeved on the back vertical optical axis on one corresponding side, the upper end and the lower end of one back vertical optical axis are respectively provided with the first travel switch, the first travel switches are installed on the backrest frame, and the electric push rods push the back rubbing device bottom plate to move, thereby realizing the extrusion scrubbing of the back scrubbing mechanism in the vertical direction; the first travel switch is connected with the core control panel.

4. A chair-type washing aid as claimed in claim 2, wherein: the horizontal moving mechanism comprises a back speed reduction motor, a back gear, a rack, a back horizontal optical axis slider and a second travel switch, the back horizontal optical axis is installed on a back scrubbing device bottom plate, a scrubbing ball supporting plate is installed on the back horizontal optical axis through the back horizontal optical axis slider, the back speed reduction motor is installed on the back scrubbing device bottom plate, an output shaft of the back speed reduction motor is connected with the back gear, the back gear is meshed with the rack, the rack is fixedly installed on the upper edge of the scrubbing ball supporting plate, the left side and the right side of the back horizontal optical axis are respectively provided with the second travel switch, and the second travel switches are installed on a backrest frame to enable the scrubbing ball supporting plate to translate within a set travel range;