CN201216701Y - Pneumatic standing chair - Google Patents

Abstract

The utility model relates to a chair which has an adjustable height and can aid a sitting person with standing up. The stand-aiding chair comprises a chair frame, a chair back, a chair seat, chair legs, armrests and a position adjusting system. A control button drives a motor and drives an air compressor and an extension cylinder to move, and drives a height adjusting mechanism and a stand-aiding mechanism through an extension-type cylinder to realize the height adjustment of the chair and the overturn and the reduction movements of the chair seat while aiding the sitting person with standing up; and a locking device can lock the required proper position. The height adjustment and the stand-aiding movement can be realized by the air pressure stand-aiding chair completely through electrical and mechanical devices, and the only requirement for the user is to manually control the button in the device, thereby greatly reducing the workload of the operation staff; and ensuring that the elderly who are inconvenient to move and the handicapped who have low limb dysfunction can operate conveniently and stand up easily.

Description

Air pressure helps upright chair

Technical field

This utility model relates to a kind of chair, relates generally to a kind ofly can adjust height and can help to be in the upright chair that helps that the people of an appearance erects.

Background technology

The people needs the concerted effort in joints, many places such as foot, knee joint and waist by thirty years of age time-out of seat appearance, for the waist lower limb old people of illness is arranged, and is a relatively thing of difficulty.And the disability personnel of obstacle, the action that can't oneself finish are especially arranged for lower limb function.Patent 200620023176 discloses a kind of upright chair that helps, and the handrail that helps upright chair is hinged on the seat support by the crank of bilateral, has needed immediately, forwards promotes the bilateral handrail, and handrail is promptly raised the rear portion of seat support by crank, thus help the people stand up.Though this helps upright chair to reach and helps upright effect, but shortcoming be by strength rely on people's arm to provide fully, equal with the hands to lift an adult, this work all is the thing of requiring great effort very much no matter be to finish by the seat person or by the people who helps him.In addition, be provided with the protection baffle plate, make the structure more complicated in the front part sides of chair; And the height of chair can not be adjusted.

Summary of the invention

The purpose of this utility model provides a kind ofly can adjust height, and can help to be in and that the people of an appearance easily erects, laborsaving, simple in structurely fast help upright chair.

For reaching above-mentioned purpose, the technical solution adopted in the utility model is: this air pressure helps upright chair, comprise that chair frame, chair frame are provided with the chair back, seat support, chair lower limb and position regulating system, described position regulating system comprises adjusting device, driving device and control device; Adjusting device comprises height adjustment mechanism and has helped mechanism, described chair lower limb is respectively four chair lower limbs of axial hollow, height adjustment mechanism comprises four slide bars, the upper end of slide bar is separately fixed at four jiaos of chair frame, the slide bar body is slidingly matched with the endoporus of four chair lower limbs respectively, all is provided with locking mechanism in each chair lower limb upper end with the contacted position of slide bar; The front portion of seat support is hinged on the chair frame, has helped mechanism to be arranged on the bottom surface of seat support; Driving device comprises motor, air compressor machine that is connected with motor and the telescopic cylinder that is connected with air compressor machine, and the first stage piston of telescopic cylinder is connected with the chair frame, and the second piston of telescopic cylinder is connected with the mechanism that helped on the seat support; Control device comprises control knob, and control knob is connected with locking device with motor, telescopic cylinder respectively by lead.

The described mechanism that helped comprises guide rail and slide block, guide rail is fixed on the back side of seat support by the front and back lengthwise position by the support that is arranged on its two ends, the rear end of guide rail is higher than front end, whole guide rail with respect to the horizontal plane is provided with angle of inclination beta, slide block is hinged on the upper end of telescopic cylinder second piston, and the endoporus and the guide rail of slide block are slidingly matched.

Described locking mechanism comprises the lock sleeve that is threaded with the chair lower limb, be arranged on two blocks of semi-circular electric magnet and the coil on the electric magnet respectively between lock sleeve and the slide bar, the two ends of each coil are connected with control knob by lead respectively, and the N utmost point one end of every block of electric magnet is connected by spring with the S utmost point one end of another piece electric magnet.

Upper surface at chair lower limb endoporus is provided with inner convex platform, is provided with interstage sleeve in the lower end of slide bar; Guide rail angle of inclination beta 〉=7 with respect to the horizontal plane °; Also be provided with handrail on the chair frame, control knob is fixed on the handrail.

Described interstage sleeve is hinged on the lower end of slide bar by pin; Bottom at four chair lower limbs is respectively arranged with roller.

Owing to be provided with adjusting device in the position regulating system on chair, driving device and control device, in adjusting device, be provided with height adjustment mechanism and helped mechanism, make the adjustment and the seat support of chair height help rotary movement immediately to finish by the electric and machinery in the driving device fully, button in user of service's only with hand maneuver control device gets final product, alleviated operator's the amount of labour greatly, the old people of inconvenient activity and disability personnel that lower limb function has obstacle can be operated easily, erect like a cork, and main device all is arranged on seat support bottom, makes the outward appearance of whole chair simpler pleasing.

Description of drawings

Fig. 1 is an external structure sketch map of the present utility model;

Fig. 2 is the internal structure sketch map of locking mechanism;

Fig. 3 is the sketch map in B-B cross section among Fig. 1;

Fig. 4 is the structural representation that has helped mechanism.

The specific embodiment

This air pressure helps upright chair to comprise chair frame 5 and is arranged on the chair back 6, seat support 10, chair lower limb 14, handrail and position regulating system on the chair frame 5, and described position regulating system comprises adjusting device, driving device and control device three parts.Wherein adjusting device comprises height adjustment mechanism and has helped mechanism, regulate height for convenience, described chair lower limb 14 is respectively four chair lower limbs of axial hollow, height adjustment mechanism comprises four slide bars 12, the upper end of slide bar 12 is separately fixed at four jiaos of chair frame 5, and the slide bar body is slidingly matched with the endoporus of four chair lower limbs respectively.In order after height adjustment is good, fixed-site all to be provided with locking mechanism in each chair lower limb 14 upper end and slide bar 12 contacted positions.The front portion of seat support 10 on chair frame 5, helps time-out seat support 10 to overturn around forward hinge 11 by pin 11 or bolted splice, has helped mechanism to be arranged on the bottom surface of seat support 10.Driving device comprises gas tank 15, motor 2, air compressor machine that is connected with motor and the telescopic air pressure cylinder 4 that is connected with air compressor machine, and what adopt in the present embodiment is CTA series telescopic air pressure cylinder.The first stage piston of telescopic air pressure cylinder 4 is fixedlyed connected with chair frame 5, and the second piston of telescopic air pressure cylinder 4 is connected with the mechanism that helped on the seat support 10.Control device comprises control knob 9, and control knob 9 is fixed on the position of handled easily on the handrail, control knob 9 by lead respectively with motor 2, telescopic air pressure cylinder 4 on by-pass valve control 3 be connected with locking device.In the present embodiment, described locking mechanism comprises lock sleeve 13, electric magnet 16 and coil 18, lock sleeve 13 and chair lower limb 14 are connected by screw thread, electric magnet 16 is two blocks of semiorbicular Magnet, be arranged in the cavity between lock sleeve 13 endoporus and slide bar 12 cylindricals, be wound with coil 18 respectively on two blocks of electric magnet, the two ends of each coil are connected with control knob 9 by lead respectively, and the N utmost point one end of every block of electric magnet is connected by spring 19 with the S utmost point one end of another piece electric magnet.Energising back electric magnet 16 overcomes spring pressure attracts each other, and slide bar 12 is held tightly made required height and position locking.Cut off electric current when unlocking, two blocks of electric magnet are no longer attracted each other, and spring force promptly forces two electric magnet 16 that slide bar 12 is unclamped.In addition, locking mechanism also can adopt lock modes such as voussoir, latch or screw.In the present embodiment, the described mechanism that helped comprises guide rail 7 and slide block 8, the support of guide rail 7 by being arranged on its two ends is fixed on the back side of seat support 19 by the front and back lengthwise position, and slide block 8 is hinged on the upper end of telescopic air pressure cylinder 4 second pistons, and the endoporus of slide block 8 and guide rail 7 are slidingly matched.For stuck between anti-limited slip block 8 and the guide rail 7, the installation site of guide rail 7 is set to the rear end and is higher than front end, makes guide rail 7 that an angle of inclination beta with respect to the horizontal plane be arranged, and in the present embodiment, β 〉=7 ° get final product.In addition, also can not adopt guide rail and be set to T shape slideway, not establish slide block and adopt the roller that matches with slideway, adopt this scheme angle of inclination beta need be set.For the height that slide bar 12 is risen carries out spacingly, be provided with inner convex platform in the upper surface of chair lower limb 14 endoporus, be provided with interstage sleeve 17 in the lower end of slide bar 12; Interstage sleeve 17 breaks away from mutually with the boss contact preventing when rising to extreme position.In the present embodiment, block at chair lower limb 14 endoporus during for fear of interstage sleeve 17 liftings, interstage sleeve 17 is hinged on the lower end of slide bar 12 by pin, can certain rotation be arranged around pin.In addition, also can under the condition that guarantees certain interval, interstage sleeve and slide bar be fixed together, or the cylindrical of interstage sleeve is set to sphere.In addition, for the chair conveniently moving, also be respectively arranged with roller 1 in the bottom of four chair lower limbs 14.

Its operation principle is:

When adjusting height, press the rising key of control knob, motor drives air compressor machine by by-pass valve control gases at high pressure is input in the telescopic air pressure cylinder from gas tank, and the first stage piston that orders about the telescopic air pressure cylinder drives the chair frame and rises to desired height.Press the locking key of control knob then, electric magnet is held slide bar tightly and is made the height and position locking.When dipping, reverse operating is pressed the reverse keys of control knob earlier, state unlocks, press the decline key again, by the two-position four way change valve in the baric systerm gases at high pressure in the telescopic air pressure cylinder are emitted, the chair frame can drop to suitable position height with first stage piston.The time of pressing rising key or decline key is directly proportional with the distance of chair frame lifting, can adopt crawl when needing fine setting.

When needs help immediately, press the upset key of control knob, motor drives air compressor machine by by-pass valve control gases at high pressure is input in the telescopic air pressure cylinder from gas tank, the second piston that orders about the telescopic air pressure cylinder rises and carries out counterclockwise inclination flip by having helped mechanism to drive seat support, promotes human body to the front upper place and stands up to assist human body.On selected telescopic air pressure cylinder, the lift of its second piston is 150 millimeters, and the maximum angle that seat support is reached when inclination flip is 60 °, the best angle of this angle for helping others and standing up smoothly.When needing seat support to reset, press the decline key again, the gases at high pressure in the telescopic air pressure cylinder are emitted, seat support can fall after rise to horizontal level with second piston.

This helps upright chair to be applicable to people because of the body weight moderate (below 75 kilograms) of dysstasia after the sitting of waist lower limb illness.

Compare with using hydraulic means, air pressure stand assisting chair is littler to the pollution of air.

Claims (5)

1. An air pressure standing aid chair, comprising a chair frame, a chair back, a chair seat, chair legs and a position adjustment system are arranged on the chair frame, it is characterized in that: the position adjustment system includes an adjustment device, a driving device and a control device The adjustment device includes a height adjustment mechanism and a lift-up mechanism. The chair legs are four axially hollow chair legs. The height adjustment mechanism includes four slide bars. The upper ends of the slide bars are respectively fixed on the four corners of the chair frame. Slidingly fit with the inner holes of the four chair legs respectively, and a locking mechanism is provided at the part where the upper end of each chair leg is in contact with the slide bar; the front part of the seat is hinged on the chair frame, and the lifting mechanism is set On the bottom surface; the driving device includes a motor, an air compressor connected to the motor, and a telescopic cylinder connected to the air compressor. The primary piston of the telescopic cylinder is connected to the chair frame, and the secondary piston of the telescopic cylinder is connected to the chair frame. The lifting aid mechanism on the seat is connected; the control device includes a control button, and the control button is respectively connected with the motor, the telescopic cylinder and the locking device through wires. 2. The air pressure standing aid chair according to claim 1, characterized in that: the lifting aid mechanism includes guide rails and sliders, the guide rails are fixed on the back of the seat according to the front and rear longitudinal positions through the brackets arranged at both ends of the guide rails, and the guide rails The rear end is higher than the front end, and the entire guide rail is provided with an inclination angle β relative to the horizontal plane. The slider is hinged on the upper end of the secondary piston of the telescopic cylinder, and the inner hole of the slider is slidably matched with the guide rail. 3. The pneumatic standing aid chair according to claim 2, characterized in that: the locking mechanism comprises a locking sleeve screwed to the chair leg, and two half-ring electromagnets arranged between the locking sleeve and the sliding rod and the coils respectively wound on the electromagnets, the two ends of each coil are respectively connected with the control buttons through wires, and the N pole end of each electromagnet is connected with the S pole end of another electromagnet through a spring. 4. The pneumatic standing aid chair according to claim 3, characterized in that: an inner boss is arranged on the upper end surface of the inner hole of the chair leg, and a retaining sleeve is arranged on the lower end of the slide rod; the inclination angle β of the guide rail relative to the horizontal plane ≥7°; armrests are also provided on the chair frame, and the control buttons are fixed on the armrests. 5. The pneumatic standing aid chair according to claim 4, characterized in that: the retaining sleeve is hinged to the lower end of the slide bar through a pin; and rollers are respectively arranged at the bottom ends of the four chair legs.

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