CN201008453Y

CN201008453Y - Simple rotatable lift chair

Info

Publication number: CN201008453Y
Application number: CNU2007200724403U
Authority: CN
Inventors: 宋娜
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-07-13
Filing date: 2007-07-13
Publication date: 2008-01-23
Anticipated expiration: 2017-07-13

Abstract

The utility model relates to a simple rotating chair lift and consists of armrests, a backrest supporting steel tube and a cushion on the upper end of the backrest, a chair face and a cushion on the chair face, as well as a chair leg and an idler wheel at the lower end of the chair leg. A turnplate is arranged under the chair face; the turnplate is provided with a rotating shaft which extends downwards and inserts rotatablely and matches with an upright post fixed on the chair leg; the turnplate buckles with the upright post through a detent mechanism arranged in the upright post, which enables the rotating shaft of the turnplate to position and support in the upright post; a button at the front end of the armrest connects with the detent mechanism through a strip of iron wire, which controls the buckle and the disengaging between the detent mechanism and the leading post. When the button is pressed down, the iron wire is affected to tighten, which enables the contraction of the spring on the detent mechanism and drives the detent mechanism to disengage from a neck; and under the influence of gravity of the human body, the counter balance spring is compressed, thereby realizing the adjustment of the height of the chair face. The structure and the craft of the chair lift are simple, the utility model is easy to manufacture and convenient for operation, thus being widely used in various mechanisms of the chair lifts.

Description

The rotatable chair lift of convenient type

Technical field

The utility model relates to the adjustable for height seat of a kind of seat, especially can in use can reach the rotatable chair lift of regulating purpose by simple motion.

Background technology

Because the development of all our undertakings such as health care, office operation, family expenses leisure, and people's raising that seat comfort is required, the liftable seat is widely studied and uses.At present, obtained some achievements in this respect, many people bring into play intelligence and wisdom and have designed some chair lift schemes.But present known chair lift mechanism exists structure, complex process, and parts are more, more assorted, gives to process, transport, assemble each link and brought inconvenience.And some parts cost is higher, makes the overall cost costliness, and this all is unsuitable for enterprise and realizes.Manual multifunctional chair lift structure, technology as the chair lift of the pre-dynamic balance screw drive of the load-carrying of Chinese patent 89200349.9,93224907.8 automatic lifting chair and 97222190.5 are all comparatively complicated.Wherein the design that discloses in 89200349.9 adopts lifting and the location that motor-driven screw realizes seat, and adopts cylinder to come the gravity of balance human body and mechanism; Used pinion and rack in the patent 93224907.8, and brake is housed, this makes that all cost obviously increases.Though also some scheme is simple in structure, need before using, regulate, and adjust to get up to waste time and energy, be not easy to use.Need by pedal the seat position to be adjusted before use as patent 88204321.8; Patent 99255842.1 and patent 99215151.1 all can not in use random at any time regulating the seat height, and can't regulate continuously; Patent 00257527.2 need change the corner that is produced by rotation between the upper and lower swivel plate and reach studdle under the booster action of pin leg, makes it rotate corresponding angle with respect to nut sleeve, thus execution.Though these schemes can realize the function of seat lifting substantially, complicated operation is wasted time and energy.

Summary of the invention

In order to overcome existing chair lift structural manufacturing process complexity, cost height, and the deficiency that can not in use optionally regulate continuously at any time to the seat height, the utility model provides a kind of convenient type rotatable chair lift, simple in structure, easy to operate, can not only in use regulate easily height of seat, and being suitable for processing and assembling, the parts that adopt mostly are lower-cost general part greatly, thereby have reduced production cost.

For achieving the above object, the utility model adopts following technical proposals:

The rotatable chair lift of a kind of convenient type, comprise handrail, back rest supports steel pipe and upper end back cushion thereof, seat and go up the roller of cushion, chair leg and lower end thereof, it is characterized in that below the described seat rotating disk being arranged, fixing on rotating shaft of stretching under described rotating disk has and a described chair leg column rotates inserting, and link by a detent mechanism and a column that is placed in the column, the rotating shaft positioning support that makes rotating disk is in column; Described handrail front end has a button to lead the described detent mechanism of connection through an iron wire, linking and threading off between control detent mechanism and column.

Above-mentioned button is enclosed within the sleeve, this sleeve is connected with the diapire of the blind hole of handrail front end with screw, one through hole is arranged on the sleeve lateral wall, the upper end of described iron wire is passed through hole and is fixedlyed connected with button, the lower end of button by spring-loaded on handrail blind hole diapire, the upper end of sleeve has the end cap capping, and stretch out from the centre bore of end cap the upper end of button.

Above-mentioned detent mechanism is made of a spheroid and two ratchets, ball centre has a through hole, flexibly connect with pivot pin between this spheroid and two ratchets, connect with a spring between two ratchets, described iron wire is stretched rotating shaft from button under handrail centre bore, back rest supports perforating steel pipe, seat lower recess and rotating disk centre bore arrives detent mechanism, and the spring middle part that ball centre through hole and detent mechanism are passed in the lower end of iron wire involves; The endoporus of described column has cannelure, and two ratchet lower ends when opening are supported in the cannelure.

A slide block is arranged below the above-mentioned detent mechanism, be supported on the diapire of column through a balancing spring.

Stud with a circle projection on the above-mentioned seat bottom surface, with the cannelure formation sliding friction pair of rotating disk upper bottom surface.

Above-mentioned rotating disk is with a safety screen outward, with bolt safety screen is linked to each other with seat.

Above-mentioned iron wire is through in the flexible pipe.

The beneficial effects of the utility model are, can in use regulate arbitrarily height of seat, use very conveniently, can satisfy the needs in various places such as work, life, medical treatment, are widely used.It is simple in structure, is easy to produce and processing, therefore more has the enterprise of being suitable for to realize.

Description of drawings

Fig. 1 is the stereogram of an embodiment of the utility model.

Fig. 2 is the longitudinal section of Fig. 1 example.

Fig. 3 is button installation structure figure in Fig. 1 example.

Fig. 4 is detent mechanism mounting structure figure in Fig. 1 example.

Fig. 5 is an elevating mechanism schematic diagram in Fig. 1 example.

Fig. 6 is a seat reverse side structure chart in Fig. 1 example.

Fig. 7 is Fig. 1 example turntable stereogram.

The specific embodiment

Details are as follows in conjunction with the accompanying drawings for a preferred embodiment of the present utility model:

Referring to Fig. 1 and Fig. 2, the structure of the rotatable chair lift of this convenient type is as follows: handrail 2 and back rest supports steel pipe 4 form by the bending of the rectangular steel tube of hollow, and by the welding connection that is fixed.Back rest supports steel pipe 4 has a through hole at the position that is connected with handrail 2, and both are communicated with.Back cushion 3 is fixed in back rest supports steel pipe 4 upper ends; Armrest pad 1 is fixed on the handrail 2; Cushion 5 is fixed on the seat 6.Roller 8 is equipped with in chair leg 7 lower ends, convenient moving.

Referring to Fig. 2, an any side handrail 2 front ends have blind hole, and this blind hole position is determined according to the human dimension in the human engineering, for little brachium adds hand sizes.Button 10 places this blind hole, and by spring 12 supportings, spring 12 is fixed on the blind hole place handrail diapire.Button 10 is enclosed within the sleeve 11, and sleeve 11 is connected with the handrail diapire by screw, has a through hole 24 on its sidewall.End cap 9 external diameters become interference fits to be connected with handrail 2 front end blind holes, and sleeve 11 is sealed in the blind hole.Back rest supports steel pipe 4 has through hole to be communicated with handrail 2.Iron wire 23 passes sleeve 11, handrail 2, back rest supports steel pipe 4, seat 6 bottom surface straight-line grooves and rotating disk 19 centre bores, and an end links to each other with button 10 by the through hole 24 on sleeve 11 sidewalls, and the other end and spring 16 involve.For reducing friction, iron wire 23 is placed flexible pipe 22.Spring 16 is connected on the detent mechanism 17.Before use, button 10 lower end springs 12, iron wire 23, spring 16 all are in the natural relaxation state, and detent mechanism 17 is stuck in the spiral draw-in groove at column 18 centers, and is supported on the slide block 15.Slide block 15 lower ends are supported on the balancing spring 14, and are fixed in column 18 bottoms, and balancing spring 14 is used for the balanced controls deadweight, and play the effect of buffering, and before not applying external force, its position is in the equilbrium position.Inlay a circle projection 13 on seat 6 bottom surfaces, have a cannelure in the middle of rotating disk 19 upper bottom surfaces, projection 13 embeds in these grooves, and both constitute a secondary sliding friction pair jointly, behind the location, by bolt 21 safety screen 20 is linked to each other with seat 6, with fixing rotating disk 19.

In button shown in Figure 3 10 mounting structure figure, button 10 cross sections are T-Type structure, and its lower end is supported on the spring 12.Button 10 is enclosed within the sleeve 11, has a through hole 24 on its sidewall, and iron wire 23 penetrates from this through hole, and links to each other with button 10.End cap 9 cappings of sleeve 11 tops.

In detent mechanism shown in Figure 4 17 mounting structure figure, detent mechanism 17 is made up of a spheroid and two ratchets, flexibly connects with pivot pin between spheroid and two ratchets.The ball centre face has a fan groove, and ratchet can be movable therein, and the upper side wall of groove is the extreme position that two ratchets separate, and two ratchets can draw in to the inside.Connect with spring 16 between ratchet, when not being subjected to external force, make it be separated to extreme position, be stuck in the center convolution draw-in groove of column 18.Ball centre has a through hole, and iron wire 23 involves by this hole and detent mechanism 17 upper springs 16 middle parts.Detent mechanism 17 is supported on the slide block 15 of balancing spring 14 supportings.

In the elevating mechanism schematic diagram, when pressing the button 10, spring 12 shrinks as shown in Figure 5, and button 10 to lower slider, affects iron wire 23 upwards to tighten up along sleeve 11 sidewalls, and 16 contractions of pulling spring, affects detent mechanism 17 to break away from from the spiral draw-in groove at column 18 centers.Under the effect of manpower, compression balancing spring 14 shrinks, thereby regulates the seat height to correct position.After regulating height of seat, release button 10 resets spring 12, and iron wire 23 recovers relaxed state, and detent mechanism 17 upper springs 16 reset, and detent mechanism 17 snaps in the center convolution draw-in groove of column 18, thereby realizes the location of seat height.

In the seat reverse side structure as shown in Figure 6, seat 6 bottom surface centers have a straight-line groove, so that iron wire 23 cablings.Seat 6 bottom surfaces stud with a circle projection 13, one, play the effect of location, and the cannelure with rotating disk 19 upper bottom surfaces constitutes a secondary sliding friction pair simultaneously.

In turntable structure shown in Figure 7, rotating disk 19 upper bottom surfaces middle part has a cannelure, and a circle projection 13 of inlaying on seat 6 bottom surfaces embeds in this groove.There is a through hole at rotating disk 19 centers, are used to walk iron wire 23.

Claims

1. rotatable chair lift of convenient type, comprise handrail (2), back rest supports steel pipe (4) and upper end back cushion (3) thereof, seat (6) and go up the roller (8) of cushion (5), chair leg (7) and lower end thereof, it is characterized in that below the described seat (6) rotating disk (19) being arranged, described rotating disk (19) has rotating shaft and the described chair leg (7) stretched down to go up a fixing column (18) rotation inserting, and link with column (18) by a detent mechanism (17) that is placed in the column (18), the rotating shaft positioning support that makes rotating disk (19) is in column (18); Described handrail (2) front end has a button (10) to lead connection described detent mechanism (17) through an iron wire (23), linking and threading off between control detent mechanism (17) and column (18).

2. the rotatable chair lift of convenient type according to claim 1, it is characterized in that described button (10) is enclosed within the sleeve (11), this sleeve (11) is connected with the diapire of the blind hole of handrail (2) front end with screw, on sleeve (11) sidewall through hole (24) is arranged, the upper end of described iron wire (23) is passed through hole (24) and is fixedlyed connected with button (10), the lower end of button (10) is supported on handrail (2) the blind hole diapire by spring (12), the upper end of sleeve (11) has end cap (9) capping, and stretch out from the centre bore of end cap (9) upper end of button (10).

3. the rotatable chair lift of convenient type according to claim 1, it is characterized in that described detent mechanism (17) is made of a spheroid and two ratchets, ball centre has a through hole, flexibly connect with pivot pin between this spheroid and two ratchets, connect with a spring (16) between two ratchets, described iron wire (10) button (10) is through handrail (2) centre bore, back rest supports steel pipe (4) perforation, the centre bore of stretching rotating shaft under seat (6) lower recess and the rotating disk (19) arrives detent mechanism (17), and spring (16) middle part that ball centre through hole and detent mechanism (17) are passed in the lower end of iron wire (10) involves; The endoporus of described column (18) has cannelure, and the lower end is supported in the cannelure when no opening for two ratchets.

4. the rotatable chair lift of convenient type according to claim 3 is characterized in that having a slide block (15) to be supported on the diapire of column (18) through a balancing spring (14) below the described detent mechanism (17).

5. the rotatable chair lift of convenient type according to claim 1 is characterized in that being studding with on described seat (6) bottom surface circle projection (13), with the cannelure formation sliding friction pair of rotating disk (19) upper bottom surface.

6. the rotatable chair lift of convenient type according to claim 3 is characterized in that being with a safety screen (20) outside the described rotating disk (19), by bolt (21) safety screen (20) is linked to each other with seat (6).

7. the rotatable chair lift of convenient type according to claim 1 is characterized in that described iron wire (10) is through in the flexible pipe (22).