CN201200139Y - Foot-propelled inverting standing-assist chair - Google Patents

Abstract

The utility model relates to a chair which can adjust the height and can help the person in sitting posture to stand up. The stand-assisting chair comprises a chair framework, a chair back, a chair seat, chair legs, and a position-adjusting system. A control button drives a motor and drives an air compressor and an extension cylinder to move, the extension cylinder drives a height-adjusting mechanism and a stand-assisting mechanism, thus the height adjustment of the chair and the overturn of the chair seat during stand assisting are finished. A locking mechanism can lock the needed proper position, and a pedal valve can control the restorations of the chair framework and the chair seat. The foot-operated reversing stand-assisting chair completely uses electrical and mechanical devices to implement the height adjustment and the stand assistance of the chair, the user can operate the button or the pedal valve in the control device merely with a hand or foot, the workload of the operator is greatly lightened, old folks who are inconvenient to move and handicapped persons having functional disorder in lower limbs can conveniently operate the chair and can easily stand up.

Description

The foot-propelled commutation helps upright chair

Technical field

The 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 pin, knee and waist by thirty years of age time-out of seat appearance, for the waist leg the elderly 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 foot-propelled commutation helps upright chair to comprise that chair frame, chair frame are provided with the chair back, seat support, chair leg and position regulating system, and described position regulating system comprises adjusting device, drive unit and control device; Adjusting device comprises height adjustment mechanism and has helped mechanism, described chair leg is respectively four chair legs 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 legs respectively, all is provided with locking mechanism in each chair leg 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; Drive unit 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 button and foot valve, and control button is connected with locking device with motor, telescopic cylinder respectively by lead, and foot valve is connected with telescopic cylinder.

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 leg, be arranged on two blocks of semi-circular electromagnet and the coil on the electromagnet respectively between lock sleeve and the slide bar, the two ends of each coil are connected with control button by lead respectively, and the N utmost point one end of every block of electromagnet is connected by spring with the S utmost point one end of another piece electromagnet.

Upper surface at chair leg endoporus also 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 button is fixed on the handrail.

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

Owing to be provided with adjusting device in the position regulating system on chair, drive unit 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 mechanical device in the drive unit fully, button or foot valve in user of service's only with hand maneuver control device get final product, alleviated operating personnel's the amount of labour greatly, the elderly 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 schematic diagram of the present utility model;

Fig. 2 is the internal structure schematic diagram of locking mechanism;

Fig. 3 is the schematic diagram in B among Fig. 1-B cross section;

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

The specific embodiment

This foot-propelled commutation helps upright chair to comprise chair frame 5 and is arranged on the chair back 6, seat support 10, chair leg 14, handrail and position regulating system on the chair frame 5, and described position regulating system comprises adjusting device, drive unit and control device three parts.Wherein adjusting device comprises height adjustment mechanism and has helped mechanism, regulate height for convenience, described chair leg 14 is respectively four chair legs 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 legs 14 respectively.In order after Height Adjustment is good, fixed-site all to be provided with locking mechanism at the upper end and the slide bar 12 contacted positions of each chair leg 14.The front portion of seat support 10 on chair frame 5, helps time-out seat support 10 to overturn around the hinge 11 of front portion by pin 11 or bolted splice, has helped mechanism to be arranged on the bottom surface of seat support 10.Drive unit comprises gas tank 2, motor 1, air compressor machine that is connected with motor and the telescopic cylinder 4 that is connected with air compressor machine, and what adopt in the present embodiment is the telescopic cylinder of CTA series.The first stage piston of telescopic cylinder 4 is fixedlyed connected with chair frame 5, and the second piston of telescopic cylinder 4 is connected with the mechanism that helped on the seat support 5.Control device comprises control button 9 and foot valve 3, control button 9 is fixed on the position of handled easily on the handrail, control button 9 by lead respectively with motor 1, telescopic cylinder 4 on by-pass valve control be connected with locking device, foot valve 3 also is connected with by-pass valve control on the telescopic cylinder 4.In the present embodiment, described locking mechanism comprises lock sleeve 13, electromagnet 16 and coil 18, lock sleeve 13 and chair leg 14 are connected by screw thread, electromagnet 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 electromagnet 16, the two ends of each coil 18 are connected with control button 9 by lead respectively, and the N utmost point one end of every block of electromagnet is connected by spring 19 with the S utmost point one end of another piece electromagnet.Energising back electromagnet 16 overcomes the pressure of spring 19 attracts each other, and slide bar 12 is held tightly made the height and position locking.Cut off electric current when unlocking, two blocks of electromagnet 16 are no longer attracted each other, and spring force can force two electromagnet 16 to unclamp slide bar 12.In addition, locking mechanism also can adopt locking 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 10 by the front and back lengthwise position, and slide block 8 is hinged on the upper end of telescopic 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 the roller that matches with slideway is set, 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 leg 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 the extreme position that rises.In the present embodiment, block at chair leg 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 17 and slide bar 12 be fixed together, or interstage sleeve 17 is set to sphere.In addition, for the chair conveniently moving, also be respectively arranged with roller 15 in the bottom of four chair legs 14.

Its operation principle is:

When adjusting height, press the rising key of control button, motor drives air compressor machine by by-pass valve control high pressure gas is input in the telescopic cylinder from gas tank, and the first stage piston that orders about telescopic cylinder drives the chair frame and rises to desired height.Press the locking key of control button then, electromagnet is held slide bar tightly and is made the height and position locking.When dipping, reverse operating is pressed the reverse keys of control button earlier, and the state that unlocks is stepped on foot valve again the gases at high pressure in the telescopic cylinder are emitted, and the chair frame can drop to the position of proper height with first stage piston.The time of trampling foot valve is directly proportional with the distance that the chair frame descends.

When needs help immediately, press the upset key of control button, motor drives air compressor machine by by-pass valve control high pressure gas is input in the telescopic cylinder from gas tank, the second piston that orders about telescopic 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, step on foot valve the gases at high pressure in the telescopic cylinder are emitted, seat support can fall after rise to horizontal level with second piston.

The effect of foot valve is the flow direction of the telescopic cylinder inner high voltage gas of control.

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 leg illness.

Claims (5)

1, a kind of foot-propelled commutation helps upright chair, comprises that chair frame, chair frame are provided with the chair back, seat support, chair leg and position regulating system, and it is characterized in that: described position regulating system comprises adjusting device, drive unit and control device; Adjusting device comprises height adjustment mechanism and has helped mechanism, described chair leg is respectively four chair legs 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 legs respectively, all is provided with locking mechanism in each chair leg 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; Drive unit 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 button and foot valve, and control button is connected with locking device with motor, telescopic cylinder respectively by lead, and foot valve is connected with telescopic cylinder.

2, foot-propelled commutation according to claim 1 helps upright chair, it is characterized in that: 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.

3, foot-propelled commutation according to claim 2 helps upright chair, it is characterized in that: described locking mechanism comprises the lock sleeve that is threaded with the chair leg, be arranged on two blocks of semi-circular electromagnet and the coil on the electromagnet respectively between lock sleeve and the slide bar, the two ends of each coil are connected with control button by lead respectively, and the N utmost point one end of every block of electromagnet is connected by spring with the S utmost point one end of another piece electromagnet.

4, foot-propelled commutation according to claim 3 helps upright chair, and it is characterized in that: the upper surface at chair leg endoporus also 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 button is fixed on the handrail.

5, foot-propelled commutation according to claim 4 helps upright chair, and it is characterized in that: described interstage sleeve is hinged on the lower end of slide bar by pin; Bottom at four chair legs is respectively arranged with roller.

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