CN209136371U - Power-assisted chair - Google Patents

Abstract

The utility model discloses a power-assisted seat, comprising: a seat plate (12), a support frame and a power-assisting mechanism; connected to the support frame; the power assist mechanism comprises: a gear (5), a rack (6) and an elastic member (8); the gear (5) is coaxially fixed to the rotating shaft (11), and the rack (6) meshing with the gear (5), the elastic member (8) acts on the end of the rack (6) to exert a downward moving force on the rack (6), the rack (6) passes through The gear (5) and the rotating shaft (11) apply upward turning power to the seat plate (12). The power-assisting seat of the utility model can provide boosting and buffering functions when a person sits down or gets up, which is convenient for the elderly or people with inconvenient legs and feet.

Description

booster seat

technical field

The utility model relates to a seat device. In particular, it relates to a seat device that can provide power assistance when sitting down or getting up, which is suitable for the elderly or people with inflexible joints of legs and feet.

Background technique

With the acceleration of population aging process, it is accompanied by increasing health risks and increasing medical burden. How to improve the quality of life and quality of life of the elderly group has gradually attracted the attention of the whole society. The elderly or those with inflexible legs and feet will feel very inconvenient when sitting down or getting up because of their lack of leg strength. Provide them with a comfortable and safe seat device that can provide assistance, especially when taking a shower. Seats are an urgent need for every elderly person and their children. In the previous patents, there are also simple foldable shower chairs, or height-adjustable seats and some assisting devices for walking and climbing stairs, but these devices cannot meet the above-mentioned needs of people well, and many assistive devices The devices are all devices that need to be worn on the body, and it is inconvenient to put on and take off, which is very troublesome for the elderly to use.

Utility model content

The problem to be solved by the present invention is to provide a power-assisted seat which can provide a certain power-assisted buffering effect when sitting down and stand up, and can be automatically folded to save space.

The technical scheme adopted by the present utility model to solve the technical problem is as follows: a power-assisted seat is designed, which includes: a seat plate, its supporting frame, and a power-assisting mechanism; The power-assisting mechanism includes: a gear, a rack and an elastic member; the gear is coaxially fixed to the rotating shaft, the rack is meshed with the gear, and the elastic member acts on the end of the rack. The rack exerts a downward moving force, and the rack exerts upward turning power on the seat plate through the gear and the rotating shaft.

A slider is fixed on the upper end of the rack, and the elastic member is a compression spring and exerts a downward force on the slider.

The rack passes through a through hole of a limit block fixed to the support frame, and a limit plate with a size larger than the through hole is fixed at the lower end of the rack.

The support frame comprises: a seat back, two support rods respectively connected to the left and right sides of the seat back; the power assisting mechanism is installed in the inner cavity of the seat back.

The support rod is fixed on the wall.

The power-assisted seat of the present invention also includes a height adjustment mechanism, which includes: a sliding sleeve, a spring button installed on one side of the sliding sleeve, and a plurality of positioning holes opened on the side wall of the support rod; the sliding sleeve The sleeve is fixed on the seat back and is slidably sleeved on the support rod, a plurality of positioning holes are arranged vertically, and the spring buttons correspond to the circumferential positions of the positioning holes.

The sliding sleeve is a circular ring sleeve composed of two half-rings, and the two half-rings are locked and sleeved on the support rod through bolts.

The side of the seat plate is provided with a hook hole, and the support frame is provided with a hook; when the seat plate is turned to a horizontal position, the hook can just be snapped into the hook hole and the seat The plate is locked in a horizontal position.

The power-assisted seat of the utility model does not need to use conventional energy sources such as electricity, oil, coal, etc., and provides a seat device that can be used by the elderly or people with insufficient leg strength, and can provide support, boosting and buffering when the person sits down. , it can give a boosting and buffering effect when getting up, especially suitable for use in the bathroom, providing a safe and comfortable seat device for the elderly or those with handicapped legs and feet, which is very convenient to use; the seat plate of the seat can be automatically folded, no take up space. In addition, it can be adjusted to a comfortable height according to the height of the elderly.

Description of drawings

Fig. 1 is the structural schematic diagram of the front side of the power-assisted seat of the present invention;

Fig. 2 is A-A sectional view in Fig. 1, showing the structure of the power assist mechanism;

Fig. 3 is the structural representation of the side of the height adjustment mechanism;

Fig. 4 is the structural representation of described sliding sleeve 3;

FIG. 5 is a partial enlarged view of B in FIG. 1 .

Description of drawing numbers: 1 support rod, 2 positioning holes, 3 sliding sleeves, 4 spring buttons, 5 gears, 6 racks, 7 sliders, 8 elastic parts, 9 limit blocks, 10 limit plates, 11 shafts, 12 seats Board, 13 back, 14 hook, 15 hook hole

Detailed ways

In order to make the purpose, technical solutions and beneficial effects of the present utility model clearer, the present utility model will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

As shown in FIG. 1 , the power-assisted seat of the present invention includes: a seat plate 12 and its supporting frame for people to sit on, a power-assisted mechanism that can provide power-assisting and buffering functions when a person sits down or gets up, and is used to adjust the seat. Height adjustment mechanism for the height of the board 12. In this embodiment, the support frame further includes: a seat back 13 , and two support rods 1 respectively connected to the left and right sides of the seat back 13 . Horizontal rotating shafts 11 are fixed on the left and right sides of the rear of the seat plate 12 and are rotatably connected to the seat back 13 through the rotating shafts 11 . The upper and lower ends of the left and right support rods 1 are fixed on the wall to avoid occupying floor space.

As shown in FIG. 2 , the power assist mechanism is installed in the inner cavity of the seat back 13 , and includes a gear 5 , a rack 6 and an elastic member 8 . There are two gears 5 , which are respectively coaxially fixed to the left and right rotating shafts 11 , so that the gears 5 and the rotating shafts 11 will rotate synchronously and in the same direction. The rack 6 is arranged vertically, and the rack 6 is also provided with two gears 5 which are meshed with the gears 5 on the left and right sides respectively; when the rack 6 moves downward, it will drive the meshed gears 5 and the rotating shaft 11 to rotate clockwise (In terms of the view in FIG. 2 ), the seat plate 12 is turned upward; and when the rack 6 moves upward, the gear 5 and the shaft 11 rotate counterclockwise, thereby driving the seat plate 12 to turn downward. The elastic member 8 acts on the end of the rack 6 to exert a downward moving force on the rack 6, and the elastic member 8 can act on the upper end of the rack 6 to exert a downward thrust on the rack 6 , can also act on the lower end of the rack 6 to exert a downward pulling force on the rack 6 . In this embodiment, the upper end of the rack 6 is welded and fixed to the slider 7 , the elastic member 8 adopts a compression spring, and the lower end of the compression spring is welded to the slider 7 to exert a downward force on the slider 7 . In order to limit the moving position of the rack 6 , two left and right limit blocks 9 are fixedly arranged in the inner cavity of the seat back 13 , and a vertical through hole is formed in the middle of the limit block 9 , and the rack 6 can just pass from the limit block. 9 passes through the vertical through hole, and the lower end of the rack 6 is welded and fixed with a limiting plate 10 with a size larger than the through hole.

When a person sits down on the seat plate 12 and turns it downward, the rotation of the seat plate 12 is transformed into an upward linear motion of the rack 6 by using the gear 5 and the rack 6, and the slider 7 on the top of the rack 6 is used to push upward. Compression spring 8, the compression spring 8 will transmit the reaction force to the seat plate 12, so that the person's buttocks are supported and buffered upwards. When the seat plate 12 is turned to the horizontal position, the rack 6 moves up to its bottom limit plate 10. The bottom of the limit block 9 prevents the rack 6 from moving upward, the gear 5 is stuck, and the seat plate 12 does not rotate downward. The rotating shaft 11 continuously exerts a moment that makes the seat plate 12 turn upwards. In order to prevent the seat plate 12 from being turned upward due to the lifting of the buttocks, a hook hole 15 can be provided on the side of the seat plate 12, and the seat back 13 is provided with a hook 14. When the seat plate 12 is turned to a horizontal position, the The hook 14 can just be hooked into the hook hole 15 so that the seat plate 12 can be locked in a horizontal position.

When the person gets up, first loosen the hook 14, with the reduction of the force of the buttocks on the seat plate 12, the compression spring 8 should restore the original length, push the slider 7 and the rack 6 to move down, and pass the gear 5 and the rotating shaft. 11 drives the seat plate 12 to turn upwards, and the restoring elastic force of the compression spring 8 is transmitted to the seat plate 12, which plays a role in pushing and assisting the buttocks. pressure, so that the compression spring 8 does not rebound quickly, and plays a buffering role until the buttocks completely leave the seat plate 12. At this time, the compression spring 8 returns to the original length position, and the seat plate 12 is turned to the vertical position to achieve the purpose of folding. Effectively reduce the space occupation.

As shown in Figure 3, Figure 4 and Figure 5, the height adjustment mechanism includes: a sliding sleeve 3, a spring button 4 installed on one side of the sliding sleeve 3, and a spring button 4 provided on the side wall of the support rod 1 Multiple positioning holes 2 for snapping into. The sliding sleeve 3 is fixed on the left and right sides of the seat back 13 and is slidably connected to the support rod 1. As shown in FIG. 4 , the sliding sleeve 3 is a circular ring sleeve composed of two half rings. 32. The two half-rings are locked and sleeved on the support rod 1, which is convenient for installation and safe and reliable. As shown in FIG. 3 , there are five positioning holes 2 and are evenly arranged in the vertical direction, and the interval between the upper and lower adjacent positioning holes 2 is 50 mm. The spring buttons 4 correspond to the circumferential positions of the positioning holes 2 .

Before use, first use the sliding sleeves 3 on the left and right sides to move up and down along the support rod 1, adjust the height to a suitable height according to the user's height, and then press the spring button 4 to make it snap into the positioning hole 2 of the corresponding height, so that the The height of the seat pan 12 and seat back 13 is locked here (see Figure 4). If the height is not suitable, you can press the spring button 4 again to release the lock, move the sliding sleeve 3 to determine the suitable height and then lock it. The structure in which the above-mentioned spring button 4 can be switched between the locked state and the released state by pressing is in the prior art, and details are not described herein again.

Claims (8)

1. a kind of power-assisted chair, comprising: seat board (12) and its bearing support, servomechanism；It is characterized by:

Seat board (12) rear portion is fixed with shaft (11) and is rotatably connected at bearing support by the shaft (11)；It is described to help Force mechanisms include: gear (5), rack gear (6) and elastic component (8)；The gear (5) is coaxially fixed on the shaft (11), described Rack gear (6) is engaged with gear (5), and the elastic component (8) acts on the end of the rack gear (6) and applies the rack gear (6) to moving down Dynamic active force, the rack gear (6) are flipped up the seat board (12) application by the gear (5) and shaft (11) dynamic Power.

2. power-assisted chair according to claim 1, it is characterised in that: rack gear (6) upper end is fixed with sliding block (7), institute Elastic component (8) are stated to be compressed spring and apply the sliding block (7) downward active force.

3. power-assisted chair according to claim 2, it is characterised in that: the rack gear (6) is fixed on the bearing from one It is passed through in the through-hole of the limited block (9) of frame, which is fixed with the limit plate (10) that size is greater than the through-hole.

4. power-assisted chair according to claim 1,2 or 3, which is characterized in that the bearing support includes: the chair back (13), divides Two support rods (1) not being connected at left and right sides of the chair back (13)；The servomechanism is mounted on the interior of the chair back (13) In chamber.

5. power-assisted chair according to claim 4, it is characterised in that: the support rod (1) is fixed on the wall.

6. power-assisted chair according to claim 4, it is characterised in that: it further include height adjustment mechanism, the height adjustment machine Structure includes: sliding sleeve (3), the spring button (4) for being mounted on sliding sleeve (3) side, is opened in the multiple of the support rod (1) side wall Location hole (2)；The sliding sleeve (3) is fixed on the chair back (13) and is slidably socketed in the support rod (1), multiple location holes (2) It vertically arranges, the spring button (4) is corresponding with the circumferential position of those location holes (2).

7. power-assisted chair according to claim 6, it is characterised in that: the circle that the sliding sleeve (3) is made of two semi-rings Two semi-ring lockings are socketed on the support rod (1) by bolt by ring set.

8. power-assisted chair according to claim 1,2 or 3, which is characterized in that the side of the seat board (12) is equipped with hook Hole (15), the bearing support are equipped with hook (14)；At the seat board (12) overturning to horizontal position, the hook (14) is just It can be caught in well in the hook hole (15) and the seat board (12) is locked in horizontal position.