阅读说明：本技术 一种助老座便自动伸缩装置及其伸缩方法 (Automatic telescopic device and telescopic method for old-people-assisting toilet ) 是由 陈雪辉 李�昊 郝帅 徐晨 黄子宜 鲍双龙 黄磊 刘伟 于 2020-05-28 设计创作，主要内容包括：本发明公开了一种助老座便自动伸缩装置及其伸缩方法。该装置包括座椅、升降机构、摇杆机构、感应机构以及控制器。座椅包括支架、坐垫以及靠背。每个升降机构包括杆电机、驱动杆、圆锥齿轮一、圆锥齿轮二、滚珠丝杆以及丝杆套,每个摇杆机构包括遥杆电机、曲柄一以及曲柄二,感应机构压力传感器一以及压力传感器二。控制器先驱使坐垫上升,再绘制腿部下压力的变化曲线,最后判断腿部下压力是否保持在恒定范围内,是则先停止靠近的杆电机转动,再在坐垫的倾斜角度达到预设角度后停止远离的杆电机转动,最后驱使遥杆电机转动,使坐垫向朝向行动不便者的方向运动。本发明更加安全可靠,而且不需要携带其他设备,使用更加便捷。(The invention discloses an automatic telescopic device and a telescopic method for a pedestal pan for the old. The device comprises a seat, a lifting mechanism, a rocker mechanism, a sensing mechanism and a controller. The seat comprises a bracket, a cushion and a backrest. Each lifting mechanism comprises a rod motor, a driving rod, a first conical gear, a second conical gear, a ball screw and a screw sleeve, each rocker mechanism comprises a remote rod motor, a first crank, a second crank, a first sensing mechanism pressure sensor and a second sensing mechanism pressure sensor. The controller firstly enables the cushion to rise, then draws a change curve of the leg downward pressure, and finally judges whether the leg downward pressure is kept in a constant range, if so, the rod motor close to the cushion stops rotating, then the rod motor far away from the cushion stops rotating after the inclination angle of the cushion reaches a preset angle, and finally the remote rod motor is driven to rotate, so that the cushion moves towards the direction of the mobility-handicapped person. The invention is safer and more reliable, does not need to carry other equipment and is more convenient to use.)

1. An automatic telescopic device of an old-helping closestool is characterized by comprising:

a seat (1) comprising a support (2), a seat cushion (3) and a backrest (4); the cushion (3) is positioned in the bracket (2); the backrest (4) is arranged on the bracket (2) and is positioned at one side of the cushion (3);

each lifting mechanism comprises a rod motor (5), a driving rod (6), at least one first conical gear (7), at least one second conical gear (8) corresponding to the at least one first conical gear (7), at least one ball screw (9) corresponding to the at least one second conical gear (8) and at least one screw sleeve (10) corresponding to the at least one ball screw (9); the rod motor (5) is fixed on the bracket (2), and an output shaft is connected with the driving rod (6); the first conical gear (7) is sleeved on the driving rod (6) and is meshed with the second conical gear (8); a conical gear II (8) is sleeved on one end of the corresponding ball screw (9); the other end of the ball screw (9) is in threaded connection with one end of the corresponding screw sleeve (10);

at least one rocker mechanism, each rocker mechanism comprising a telerod motor (11), a crank one (12) and a crank two (13); the remote rod motor (11) is fixed at the other end of one part of the screw rod sleeve (10), the axial direction of the output shaft is vertical to the axial direction of the screw rod sleeve (10), and the other end of the other part of the screw rod sleeve (10) is rotatably connected to the seat cushion (3); one end of a first crank (12) is sleeved on an output shaft of the remote rod motor (11), and the other end of the first crank (12) is rotatably connected with one end of a second crank (13); the other end of the crank II (13) is rotationally connected to the cushion (3);

the sensing mechanism comprises at least one first pressure sensor and at least one second pressure sensor; the first pressure sensor is arranged in the seat cushion (3) and used for detecting the leg downward pressure of a mobility-handicapped person on the seat cushion (3); the second pressure sensor is arranged on the backrest (4) and is used for detecting the back pressure of the mobility-handicapped person; and

a controller for determining whether the back pressure reaches a preset pressure one; when the back pressure reaches the preset pressure, the controller drives all rod motors (5) to rotate to enable the cushion (3) to rise, then a change curve of the leg downward pressure along with the rising time is drawn, and finally whether the leg downward pressure at the tail part of the change curve is kept within a preset constant range for a preset time is judged; if the downward pressure of the tail leg part is kept in the constant range for the preset time, the controller stops rotating the rod motor (5) close to the leg part of the mobility-handicapped person, stops rotating the rod motor (5) far away from the leg part of the mobility-handicapped person after the inclination angle of the seat cushion (3) reaches a preset angle, and finally drives the remote rod motor (11) to rotate, so that the seat cushion (3) moves towards the direction of the mobility-handicapped person.

2. The automatic retracting device of a senior-assisting toilet according to claim 1, wherein the controller is further configured to determine whether the back rear pressure and the leg downward pressure are both zero; when the back pressure and the leg downward pressure are zero, the controller drives all the rod motors (5) to rotate, so that the cushion (3) descends to a preset initial position.

3. The automatic retracting device of a senior-assisting toilet bowl according to claim 1, further comprising:

a lifting knob installed on the seat (1) and used for the handicapped person to rotate to generate a lifting height electric signal; the rotation angle of the lifting knob is in direct proportion to the strength of the lifting height electric signal; the controller is also used for acquiring corresponding lifting height according to the lifting height electric signal, and then driving all the rod motors (5) to rotate so as to enable the cushion (3) to ascend or descend the lifting height.

4. The automatic expansion device of the old-helping closestool of claim 1 is characterized in that the middle part of the cushion (3) is provided with a through groove structure (18); the outline of the through groove structure (18) is matched with the direction of the hip of the mobility-impaired person, and an oval through groove for the toilet seat of the mobility-impaired person is formed.

5. The automatic retracting device of a senior-assisting toilet bowl according to claim 1, further comprising:

an emergency button mounted on the seat (1) and used for being pressed by the handicapped to generate an emergency trigger signal; and

an emergency alarm mounted on the seat (1) and adapted to generate an emergency alarm signal; and the controller drives the emergency alarm to send the emergency alarm signal when the emergency button generates the emergency trigger signal.

6. The automatic retracting device of a senior toilet according to claim 1, wherein the sensing mechanism further comprises at least one pressure sensor III; the third pressure sensor is arranged in the seat cushion (3) and is used for detecting the pressure below the buttocks of the mobility-handicapped person positioned on the seat cushion (3); the controller is also used for judging whether the pressure under the buttocks is less than or equal to a second preset pressure; when the pressure below the buttocks is less than or equal to the second preset pressure, the controller drives all the rod motors (5) to rotate, so that the seat cushion (3) descends to a preset height.

7. The automatic telescopic device of the old-helping closestool of claim 1 is characterized in that the bracket (2), the cushion (3) and the backrest (4) are all made of stainless steel structures; the seat (1) also comprises two armrests (17) and a plurality of soft cushions; the two armrests (17) are arranged on the bracket (2) and are positioned at two opposite sides of the cushion (3); the soft cushions are respectively arranged on the cushion (3), the backrest (4) and the two armrests (17).

8. The automatic expansion device of an old-helping closestool according to claim 1, wherein the bracket (2) is provided with a plurality of limiting columns (19) which respectively correspond to a plurality of ball screws (9); each limiting column (19) is provided with a limiting hole, and each ball screw (9) is inserted into the corresponding limiting hole.

9. The automatic telescopic device for a senior toilet according to claim 1, wherein the seat (1) further comprises a plurality of driving wheels (14); a plurality of driving wheels (14) are rotatably arranged on the bracket (2); the automatic telescopic device further comprises:

a drive mechanism comprising a drive motor (15)/hand drive assembly (16); the driving motor (15) is arranged on the bracket (2) and is used for driving the driving wheel (14) to rotate; a hand drive assembly (16) is mounted on the stand (2) and provides at least one hand cranking end for driving the drive wheel (14) to rotate.

10. A method for extending and retracting an automatic extension and retraction device of a defecation-assistant toilet as claimed in any one of claims 1 to 9, comprising the steps of:

detecting the leg downward pressure and the back rear pressure of the mobility-handicapped person on the seat cushion (3);

judging whether the back pressure reaches a preset pressure I or not;

when the back pressure reaches the preset pressure, the precursor rotates all the rod motors (5) to enable the cushion (3) to rise, then a change curve of the leg downward pressure along with the rising time is drawn, and finally whether the leg downward pressure at the tail part of the change curve is kept within a preset constant range for a preset time is judged;

if the downward pressure of the tail leg part is kept in the constant range for the preset time, the rod motor (5) close to the leg part of the mobility-handicapped person is stopped to rotate, then the rod motor (5) far away from the leg part of the mobility-handicapped person is stopped to rotate after the inclination angle of the seat cushion (3) reaches a preset angle, and finally the remote rod motor (11) is driven to rotate, so that the seat cushion (3) moves towards the direction of the mobility-handicapped person.

Technical Field

The invention relates to an automatic telescopic device in the technical field of nursing instruments, in particular to an automatic telescopic device for an old-person-assisting toilet and a telescopic method of the device.

Background

For the mobility-impaired people with paralysis of lower limbs and severe leg diseases, especially the elderly, the life cannot be self-managed due to the problems of defecation and urination, and the inconvenience is caused to young children. The specific steps of using a conventional toilet bowl include: 1 preparing an article; the toilet is provided with armrest facilities and toilet paper in the toilet, and a toilet seat is arranged beside the bed; 2 the old enters the toilet by pushing the wheelchair and sits on the toilet; 3 the old people can wipe the skin clean by themselves or with the assistance of a caregiver; 4, returning to the room for rest after the user sits back to the wheelchair by using the hand-assisted rising device; the inconvenience of the device is that the requirement of assisting the rising action is not completely met, and the action of driving the lower body part by the hand supporting force has poor safety and reliability, higher cost, inconvenience of carrying the single body independently and other adverse factors are considered.

Moreover, current old person uses toilet bowl auxiliary device structural support stability poor, and the old man is after long-time just sitting in the stool, because the inconvenient and unable circumstances of standing up of sour numb of legs and feet, need order about the health with the help of the strength of self hand and accomplish the action of standing up, and this device can't assist old person completely and support health lower part, and the old person is easy when standing up after the use foot is smooth and lead to falling down, and the security is relatively poor.

Disclosure of Invention

The invention provides an automatic telescopic device and a telescopic method for an old-people-assisting closestool, aiming at solving the technical problem that the existing closestool auxiliary device structure is poor in action safety and reliability.

The invention is realized by adopting the following technical scheme: an automatic extension device for a pedestal pan for old people, comprising:

a seat comprising a frame, a cushion and a backrest; the cushion is positioned in the bracket; the backrest is arranged on the bracket and is positioned at one side of the cushion;

each lifting mechanism comprises a rod motor, a driving rod, at least one first conical gear, at least one second conical gear corresponding to the at least one first conical gear, at least one ball screw corresponding to the at least one second conical gear and at least one screw rod sleeve corresponding to the at least one ball screw; the rod motor is fixed on the bracket, and an output shaft is connected with the driving rod; the conical gear is sleeved on the driving rod and is meshed with the corresponding conical gear II; the conical gear is sleeved on one end of the corresponding ball screw; the other end of the ball screw is in threaded connection with one end of the corresponding screw sleeve;

each rocker mechanism comprises a remote rod motor, a first crank and a second crank; the remote rod motor is fixed on the other end of one part of the screw rod sleeve, the axial direction of the output shaft is vertical to the axial direction of the screw rod sleeve, and the other end of the other part of the screw rod sleeve is rotatably connected to the cushion; one end of the first crank is sleeved on an output shaft of the remote rod motor, and the other end of the first crank is rotatably connected with one end of the second crank; the other end of the crank II is rotatably connected to the cushion;

the sensing mechanism comprises at least one first pressure sensor and at least one second pressure sensor; the first pressure sensor is arranged in the seat cushion and used for detecting the leg downward pressure of the mobility-handicapped person on the seat cushion; the second pressure sensor is arranged on the backrest and used for detecting the back pressure of the handicapped; and

a controller for determining whether the back pressure reaches a preset pressure one; when the back pressure reaches the preset pressure, the controller drives all rod motors to rotate to enable the cushion to rise, then a change curve of the leg downward pressure along with the rising time is drawn, and finally whether the leg downward pressure at the tail part of the change curve is kept within a preset constant range for a preset time is judged; if the downward pressure of the tail leg part is kept within the constant range for the preset time, the controller stops the rotation of the rod motor close to the leg part of the mobility-impaired person, stops the rotation of the rod motor far away from the leg part of the mobility-impaired person after the inclination angle of the seat cushion reaches a preset angle, and drives the remote rod motor to rotate to enable the seat cushion to move towards the direction of the mobility-impaired person.

The invention detects the back pressure of the handicapped through the pressure sensor II of the sensing mechanism, judges whether the back pressure reaches the preset pressure I through the controller, if so, the controller rotates all the rod motors to further drive the driving rod, the conical gear I and the conical gear II to rotate, so that the transverse rotation is converted into the longitudinal rotation, simultaneously adjusts the rotating speed, increases the torque, further rotates the ball screw to drive the screw rod sleeve to jack up the cushion and realize the rising process, and the controller judges whether the lower pressure of the leg is constant in the preset time in the rising process, if so, the leg of the handicapped is lifted off, so that the rod motor at the front side stops rotating, and if the rod motor at the rear side continues rotating, the rear part of the cushion continues to rotate until the inclination angle of the cushion reaches the preset angle and then stops, so that the handicapped can be slowly pushed forward, the walking on the ground of the mobility-handicapped person is realized, and finally the cushion moves towards the mobility-handicapped person through the rocker mechanism so as to slightly push the mobility-handicapped person to completely leave the seat, thereby solving the technical problem of poor safety and reliability of the movement of the existing toilet bowl auxiliary device structure, and obtaining the technical effects of high safety and reliability and convenient use.

As a further improvement of the above solution, the controller is further configured to determine whether the back rear pressure and the leg lower pressure are both zero; when the back pressure and the leg downward pressure are zero, the controller drives all the rod motors to rotate, so that the cushion is lowered to a preset initial position.

As a further improvement of the above solution, the automatic retracting device further includes:

a lifting knob installed on the seat and used for the handicapped person to rotate so as to generate a lifting height electric signal; the rotation angle of the lifting knob is in direct proportion to the strength of the lifting height electric signal; the controller is also used for acquiring corresponding lifting height according to the lifting height electric signal, and then driving all the rod motors to rotate so as to enable the cushion to ascend or descend the lifting height.

As a further improvement of the above scheme, the middle part of the cushion is provided with a through groove structure; the outline of the through groove structure is matched with the direction of the hip of the mobility-handicapped person, and an oval through groove for the toilet seat of the mobility-handicapped person is arranged.

As a further improvement of the above solution, the automatic retracting device further includes:

an emergency button installed on the seat and used for being pressed by the handicapped to generate an emergency trigger signal; and

an emergency alarm mounted on the seat and generating an emergency alarm signal; and the controller drives the emergency alarm to send the emergency alarm signal when the emergency button generates the emergency trigger signal.

As a further improvement of the above scheme, the sensing mechanism further comprises at least one pressure sensor III; the third pressure sensor is arranged in the seat cushion and is used for detecting the pressure below the buttocks of the person who is inconvenient to move on the seat cushion; the controller is also used for judging whether the pressure under the buttocks is less than or equal to a second preset pressure; when the pressure below the buttocks is less than or equal to the second preset pressure, the controller drives all the rod motors to rotate, so that the cushion is lowered to a preset height.

As a further improvement of the scheme, the bracket, the cushion and the backrest are all made of stainless steel structures; the seat also comprises two armrests and a plurality of soft cushions; the two armrests are both arranged on the bracket and are positioned at two opposite sides of the cushion; the soft pads are respectively arranged on the cushion, the backrest and the two armrests.

As a further improvement of the above scheme, the bracket is provided with a plurality of limiting columns respectively corresponding to the plurality of ball screws; each limiting column is provided with a limiting hole, and each ball screw is inserted into the corresponding limiting hole.

As a further improvement of the above aspect, the seat further comprises a plurality of drive wheels; a plurality of driving wheels are rotatably arranged on the bracket; the automatic telescopic device further comprises:

a drive mechanism including a drive motor/hand drive assembly; the driving motor is arranged on the bracket and is used for driving the driving wheel to rotate; the hand drive assembly is mounted on the support and provides at least one hand cranking end for driving the drive wheel to rotate.

The invention also provides a method for extending and retracting the automatic extension and retraction device of the old-assisted toilet, which comprises the following steps:

detecting leg downward pressure and back backward pressure of a mobility-handicapped person on the seat cushion;

judging whether the back pressure reaches a preset pressure I or not;

when the back pressure reaches the preset pressure, the precursor rotates all the rod motors to enable the cushion to rise, then a change curve of the leg downward pressure along with the rising time is drawn, and finally whether the leg downward pressure at the tail part of the change curve is kept within a preset constant range for a preset time is judged;

if the downward pressure of the tail leg part is kept in the constant range for the preset time, the rod motor close to the leg part of the mobility-handicapped person is stopped to rotate, then the rod motor far away from the leg part of the mobility-handicapped person is stopped to rotate after the inclination angle of the cushion reaches a preset angle, and finally the remote rod motor is driven to rotate, so that the cushion moves towards the direction far away from the mobility-handicapped person.

Compared with the structure of the prior auxiliary device of the toilet bowl, the automatic telescopic device and the telescopic method of the invention have the following beneficial effects:

1. the automatic extension device of the old-assistant toilet seat detects the back pressure of the handicapped person through the pressure sensor II of the sensing mechanism, and the pressure sensor I detects the back pressure of the handicapped person to generate various pressure data of the handicapped person. The controller judges whether the back pressure is greater than the first preset pressure, if so, the person who is inconvenient to move extrudes the backrest and needs to get off the seat, at the moment, the controller rotates all the rod motors in advance, and then drives the driving rod, the first conical gear and the second conical gear to rotate in a combined manner, so that transverse rotation is converted into longitudinal rotation, the rotating speed is adjusted, the torque is increased, further, the shaft rotation is further converted into linear motion under the matching action of the ball screw and the screw rod sleeve, and then the cushion is jacked up and the ascending process is realized. During this rising, the pressing force of the legs of the handicapped person to the seat cushion becomes smaller and smaller until it disappears. Thus, the controller judges whether the leg pressing force is kept constant within a preset time (the pressure is normally zero) in the rising process, if so, the leg of the mobility-handicapped person is lifted off the ground, the rod motor on the front side stops rotating, and if the rod motor on the rear side continues rotating, the rear portion of the cushion continues to rotate upwards until the inclination angle of the cushion reaches a preset angle and then stops, so that the mobility-handicapped person can be slowly pushed forwards, and the walking on the ground of the mobility-handicapped person is realized. At the in-process that whole supplementary handicapped person got up, handicapped person only need deliberately lean on the back of pressing and can start the function that rises, and then the cushion rises earlier, and the slope again, the handicapped person just can get up under the condition with the help of outsider or self hand strength like this, and the process of getting up is safe and reliable more, need not carry other equipment moreover, and it is more convenient to use.

2. According to the automatic telescopic device for the old-people-assisting closestool, the first crank can be driven to rotate by rotating the remote rod motor, and the cushion can move in the horizontal direction under the rotating connection effect between the first crank and the second crank, so that the horizontal position of the cushion can be adjusted. Particularly, in the process of rising up, the controller enables the cushion to move towards the mobility-handicapped person through the rocker mechanism, so that the mobility-handicapped person is slightly pushed to get a weak pushing inertia effect to leave the seat, and the safety of the mobility-handicapped person is ensured. In addition, the rocker mechanism can also enable the seat cushion to move towards the direction far away from the mobility-impaired person, so that the mobility-impaired person can be thoroughly separated from the seat, and the mobility-impaired person can determine that the rising process is finished at the first time.

3. According to the automatic telescopic device for the old-person-assisting toilet, the controller can also judge whether the back pressure and the leg downward pressure are zero or not, if yes, the situation that a person with mobility inconvenience completely breaks away from the seat is indicated, and at the moment, all rod motors are driven to rotate to enable the seat cushion to descend back to the original initial position, so that the seat can be stored conveniently, and the occupied space is reduced.

4. The automatic telescopic device of the old-assisting closestool can also be provided with a lifting knob. The mobility-handicapped person can generate a lifting height electric signal by rotating the lifting knob, and the controller determines the lifting height according to the electric signal and enables the cushion to lift the height because the strength of the electric signal is in direct proportion to the rotating angle, so that the mobility-handicapped person can rotate the corresponding angle to select the height which needs to be lifted, and the mobility-handicapped person can conveniently control the lifting height of the cushion.

5. The automatic telescopic device of the old-helping closestool can also be provided with an emergency button and an emergency alarm. When the mobility-handicapped person encounters an emergency, the emergency button can be pressed to generate an emergency trigger signal, the controller monitors the signal at the moment and drives the emergency alarm to give an alarm, so that other nursing staff and the like can find and process the signal at the first time, and the safety of the mobility-handicapped person is ensured.

6. The sensing device of the automatic extension device of the old-helping closestool can be also provided with a third pressure sensor. The third pressure sensor is arranged in the seat cushion and can detect the buttock downward pressure of the mobility-handicapped person, the controller can judge whether the buttock downward pressure is less than or equal to the second preset pressure, and if so, all the rod motors are driven to rotate to enable the seat cushion to descend, so that more standing-up spaces can be provided for the mobility-handicapped person, and the mobility-handicapped person can conveniently stand up to move.

7. This help automatic telescoping device of old person's toilet, it can also set up drive wheel and actuating mechanism, actuating mechanism can drive these drive wheels and rotate, the drive wheel rotates and drives the inconvenient person of action and move, the inconvenient person of action just can control the seat by oneself and advance or retreat like this, the device can act as the role of wheelchair, therefore can enough satisfy the needs of the inconvenient person of action toilet seat, can also satisfy the demand of supplementary action, and provide the function of assisting getting up, satisfy its diversified life demand.

8. The beneficial effects of the method for extending and retracting the automatic extension and retraction device of the old-person-assisting closestool are the same as those of the automatic extension and retraction device of the old-person-assisting closestool, and the detailed description is omitted here.

Drawings

Fig. 1 is a perspective view of an automatic expansion device of a toilet stool for old people according to embodiment 1 of the present invention.

Fig. 2 is a front view of the automatic extension and retraction device of the assisted toilet in fig. 1.

Fig. 3 is a side view of the automatic extension and retraction device of the assisted toilet in fig. 1.

Fig. 4 is a rear view of the automatic extension and contraction device of the old-assisted toilet in fig. 1.

FIG. 5 is a front view of an automatic expansion device of a pedestal pan according to embodiment 5 of the present invention.

Fig. 6 is a front view of an automatic expansion device for a senior citizen's toilet in embodiment 6 of the present invention.

FIG. 7 is a front view of an automatic expansion device for a senior toilet in embodiment 6 of the present invention.

Description of the symbols:

1 seat 11 remote lever motor

2 bracket 12 crank one

3 cushion 13 crank two

4 backrest 14 driving wheel

5-rod motor 15 driving motor

6 drive rod 16 hand drive assembly

7 bevel gear-17 armrest

8-conical gear two-18 through groove structure

9 ball screw 19 spacing post

10 lead screw sleeve

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.