CN207928446U - It is a kind of that there is the auxiliary lift chair for pulling lifting device - Google Patents

Abstract

The utility model discloses a kind of auxiliary lift chair for having and pulling lifting device comprising chair frame and synchronizing bar；The chair frame is equipped with chair frame back and left handrail frame and right handrail frame, and the left handrail frame has front support leg and second cross beam；The upper end at the second cross beam connection chair frame back and front support leg；The left handrail frame and right handrail frame are symmetrical；It is respectively and fixedly provided on the left handrail frame and right handrail frame and pulls lifting device；Wherein, first connecting shaft and the second connecting shaft pass through second cross beam, the gear set and ratchet mechanism on the outside of the second cross beam, and described and two hinged connecting rods of crossbeam are close to the inside of crossbeam.The utility model pulls lifting device by pulling and inconvenience person is driven to stand up, it prevents from pulling lifting device by ratchet mechanism and overturn down, the lifting frame for pulling lifting device can adjust height in a certain range, to match the people of different heights, the people of different shoulder breadths can be matched by adjusting the distance of the upper end of two lifting frame.

Description

It is a kind of that there is the auxiliary lift chair for pulling lifting device

Technical field

The utility model is related to live house technical field more particularly to it is a kind of have pull the auxiliary of lifting device and stand up Chair.

Background technology

Chair has become people’s lives necessity in daily life.People are sitting on common seat and to stand up or sit When lower, needing leg flesh firmly to support could execution.But This move is completed more for the people of the elderly or leg myasthenia It is difficult.The elderly or the people of leg myasthenia, which stand up and sit down, to be required for by external force ability execution.

The patent of invention of existing Publication No. CN104274283B is a kind of to have assisted the chair sat comprising seat, connecting rod, The parallelogram mechanism and chair body of connecting rod and rocking bar composition, the slider-rocker mechanism of sliding block, connecting rod and rocking bar composition.Institute Two kinds of Mechanism Combinations are stated into six-bar mechanism.One end of push rod is hinged with rocking bar, and the other end is hinged with rocking bar, one end of rocking bar with push away Bar is hinged, and the other end is hinged with worm gear shaft, rocking bar rotation six bar combined mechanisms of driving.When standing up, worm gear, worm-drive drive Rocking bar rotates clockwise, and so that push rod is driven rocking bar rotation, sliding block is made to be moved up along internal chute, while seat turns around axis pin Dynamic, auxiliary user stands.When sitting down, user's buttocks is close to seat, and rocking bar rotates counterclockwise so that rocking bar band movable slider It moves down, while seat support user and sits down；It is described to have assisted the chair sat when helping people to stand up, seat overturning, The body of people is easy to happen accident with seat rotating, for example people grab the handrail of unstable chair and fall down, while using It is also inconvenient to come, and the angle that seat turns over is too big, is easy that people is allowed to slip from seat, and the angle that seat turns over is too small, Ren Menyou Chair can not be leaned on to stand up.

Invention content

The technical problem to be solved by the utility model is to for the above-mentioned deficiency of the prior art, propose that one kind has Pull the auxiliary lift chair of lifting device.

The utility model solves its technical problem the technical solution adopted is that a kind of there is the auxiliary for pulling lifting device to rise Body chair.

One kind pulling lifting device comprising：

Gear set is connected with hand lever, and the hand lever is for driving the gear set；

Lifting frame is connected with the gear set, and lifting frame rises or falls described in the gear set drive of rotation；

Automatic division ratchet mechanism, the automatic ratchet mechanism are connected with the gear set, the automatic division ratchet machine Structure is equipped with ratchet, pawl and automatic division component；

When ratchet rotates clockwise and the ratchet is more than the first preset slewing area, the automatic division component makes Ratchet and pawl detaches；When ratchet rotates counterclockwise and the ratchet is more than the second preset slewing area, described automatic point Seaming element makes ratchet and pawl engage.

Further, the gear set is equipped with the first connecting shaft, the second connecting shaft, the first tooth being sleeved in the first connecting shaft Second gear, the first unilateral bearing and the second unilateral bearing take turns, being sleeved in the second connecting shaft, first unilateral bearing are sleeved on It is fixedly connected in first connecting shaft and with the hand lever, second unilateral bearing is set to the first connecting shaft and first gear Between, the first gear and second gear engagement.

Further, the automatic division component is equipped with the ratchet sleeve being sleeved on ratchet, the end face for being set to the ratchet On the first spacer pin and the second spacer pin, the ratchet sleeve in sector, when the ratchet rotated clockwise is more than first preset When slewing area, first spacer pin pushes the ratchet sleeve, the ratchet sleeve that pawl is pushed to make pawl and the ratchet point From；When the ratchet rotated counterclockwise is more than the second preset slewing area, second spacer pin pushes ratchet sleeve, pawl multiple It is engaged with the ratchet position.

Further, the lifting frame is equipped with knob；It is described to shake hands to be fixed on the upper end of lifting frame, under the lifting frame There is first crossbeam, the rear end of the first crossbeam to be hinged with first connecting rod at end, and the front end of the first crossbeam is hinged with second Connecting rod, the first connecting rod are fixed in the second connecting shaft；

The lifting frame also has there are two the lap bars and two fixed cylinders of two supporting rod, connection supporting rods, and two solid Safety barrel is fixed on the leaning to one side of the first crossbeam, and the lower end of the supporting rod is stretched into the fixed cylinder, the lap bars position In the top of the fixed cylinder, there are the fixed cylinder multiple limit holes, the multiple limit hole to be arranged in a row up and down.

Further, in the lifting frame have lifting adjuster, the lifting adjuster with regulation button, iron wire and Bayonet lock；The iron wire is stretched into from a supporting rod, by lap bars, is pierced by from another supporting rod, the both ends of the iron wire It is fixedly connected with the bayonet lock, the bayonet lock passes through limit hole；There is the regulation button mandril, the mandril to be scheduled on described On iron wire.

It is a kind of have pull the auxiliary lift chair of lifting device, including：

Chair frame, is equipped with chair frame back and left handrail frame and right handrail frame, and the left handrail frame has front support leg and second Crossbeam；The upper end at the second cross beam connection chair frame back and front support leg；The left handrail frame and right handrail frame are symmetrical；

It is respectively and fixedly provided on the left handrail frame and right handrail frame and pulls lifting device；Wherein, first connecting shaft and Two connecting shafts pass through second cross beam, the gear set and automatic division ratchet mechanism on the outside of the second cross beam, and described the For one connecting rod close to the inside of second cross beam, the second connecting rod is hinged with the second cross beam.

Further, further include the first spring, one end of first spring is fixed on the outside of the second cross beam, The other end is connected with pawl.

Further, the chair frame back is set there are two second spring, and the chair frame back passes through described two second Spring is connected with two hand levers respectively.

Further, further include telescopic synchronizing bar, the fixation of the synchronizing bar respectively with two lifting frame Upper end is fixedly connected.

Further, the front end of the second cross beam is equipped with limited block, and the limited block is used to turn as second connecting rod Arena limits；

The inside of the second cross beam is equipped with partition board, and the partition board is rotated counterclockwise as first connecting rod and second connecting rod Boundary.

The utility model pulls lifting device by pulling and the inconvenient person that stands up is driven to stand up, and hand is prevented by ratchet mechanism Lifting device is drawn to overturn down, the lifting frame for pulling lifting device can adjust height in a certain range, to match not With the people of height, the people of different shoulder breadths can be matched by adjusting the distance of the upper end of two lifting frame.

Description of the drawings

Fig. 1 is the dimensional structure diagram of the utility model；

Fig. 2 is the connection diagram for pulling lifting device of the utility model；

Fig. 3 is the automatic division ratchet mechanism of the utility model；

Fig. 4 is the half-section diagram of the lifting frame of the utility model.

Specific implementation mode

It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.

Fig. 1-Fig. 4 is please referred to, the utility model is a kind of to have the auxiliary lift chair for pulling lifting device comprising pulls and carries Rise device 100 and chair frame 200.

Lifting device 100 will be pulled to be arranged on the handrail of 200 left and right side of chair frame, dress is promoted by pulling to start to draw 100 auxiliary people are set to stand up on chair.

The lifting device 100 that pulls includes gear set 120, automatic division ratchet mechanism 130 and lifting frame 110, gear Group 120 in have hand lever 140, by pull 140 drive gear set 120 of hand lever, gear set 120 drive lifting frame 110 with It rotates clockwise, when the lifting frame 110 is to rotate clockwise, the lifting frame 110 is in raised state.

Embodiment 1：

Gear set 120 is connected with hand lever 140, and the hand lever is for driving the gear set 120；

Lifting frame 110 is connected with the gear set 120, and the gear set 120 of rotation drives the lifting frame 110 to rise Or decline；

Automatic division ratchet mechanism, the automatic ratchet mechanism are connected with the gear set 120, the automatic division ratchet Mechanism is equipped with ratchet 131, pawl 132 and automatic division component；

When ratchet 131 rotates clockwise and the ratchet 131 is more than the first preset slewing area, the automatic division Component makes ratchet 131 and pawl 132 detach；When ratchet 131 rotates counterclockwise and the ratchet 131 is more than the second preset rotation When range, the automatic division component makes ratchet 131 and pawl 132 engage.

First preset slewing area is that ratchet 131 and pawl 132 engage, and ratchet 131 can only rotate clockwise, ratchet 131 rotate more than the range, and ratchet 131 can rotate counterclockwise.

Second preset slewing area is that ratchet 131 and pawl 132 are in discrete state, within the scope of this, ratchet 131 Can rotate clockwise can also rotate counterclockwise, rotate clockwise the limit by control first connecting rod 119a rotational limitation come Control, the limit rotated counterclockwise are that the second spacer pin 135 pushes ratchet sleeve 133, allow ratchet sleeve 133 from pawl 132 and ratchet It is detached between 131, the reset of pawl 132 is engaged with the ratchet 131.

The gear set 120 be equipped with the first connecting shaft 121, the second connecting shaft 122, be sleeved in the first connecting shaft 121 the One gear 123, the second gear 124 being sleeved in the second connecting shaft 122, the first unilateral bearing 125 and the second unidirectional shaft 126, The first gear 123 and second gear 124 engage；Hand lever 140 is fixed on first unilateral bearing 125；With counterclockwise Direction pulls hand lever 140, the hand lever 140 that first connecting shaft 121 is driven to rotate counterclockwise, the first gear 123 rotate counterclockwise, and the second gear 124 engaged with the first gear 123 rotates clockwise, first unilateral bearing 125 do not relatively rotate with the hand lever 140, when to pull hand lever 140 clockwise, the hand lever 140 with First connecting shaft 121 rotates clockwise for fulcrum, and first connecting shaft 121 is stationary.

The automatic division ratchet mechanism 130 is equipped with second gear 124 with dog end 131, pawl 132 and automatic Division component, the automatic division component include the ratchet sleeve 133 being sleeved on ratchet 131, are set on the end face of ratchet 131 First spacer pin 134 and the second spacer pin 135, the ratchet sleeve 133 is in sector, when the ratchet 131 rotated clockwise is more than the When one preset slewing area, first spacer pin 134 pushes the ratchet sleeve, the ratchet sleeve that the pawl is pushed to make spine Pawl is detached with ratchet 131；At this point, pawl is exited from the tooth socket of ratchet 131；Wherein, ratchet 131 is in the first preset rotation model When being rotated within enclosing, ratchet 131 can only rotate clockwise, and pawl, which blocks ratchet 131, prevents ratchet 131 from rotating counterclockwise.

When the ratchet 131 rotated counterclockwise is more than the second preset slewing area, second spacer pin 135 pushes spine Wheel case, ratchet pawl reset (pawl stretches into the tooth socket of ratchet 131) are engaged with ratchet 131, and wherein ratchet 131 is at second preset turn When being rotated within the scope of dynamic, pawl does not limit the rotation direction of ratchet 131.

When ratchet 131 rotates, the first spacer pin 134 or the second spacer pin 135 on the ratchet 131 push ratchet sleeve 133 rotations, the pawl 132 are stretched into the tooth socket of ratchet 131 and are rotated counterclockwise with limiting ratchet 131.

When second gear 124 rotates clockwise, also to rotate clockwise, described second connects second connecting shaft 122 Spindle 122 drives lifting frame 110 also to be rotated with smoothly hour hands；The pawl 132 stretches into the tooth socket of the ratchet 131, described For ratchet 131 to rotate clockwise in default range, the pawl 132 can prevent the ratchet 131 to rotate counterclockwise.

If when rotating more than the first preset slewing area of ratchet 131, the first spacer pin 134 contact on ratchet 131 To ratchet sleeve 133, the first spacer pin 134 pushes the ratchet sleeve 133 to rotate, and the rotation of ratchet sleeve 133 is by pawl 132 from ratchet It is exited in 131 tooth socket, the ratchet sleeve 133 is stuck between pawl 132 and the tooth socket of ratchet 131, at this point, pawl 132 cannot Ratchet 131 is limited to rotate counterclockwise, if ratchet 131 is to rotate counterclockwise to the second preset slewing area, described the Two spacer pins 135 touch the ratchet sleeve 133, push ratchet sleeve 133 to rotate counterclockwise, and the ratchet sleeve 133 is from pawl It is exited between 132 and ratchet 131, pawl 132 stretches into the tooth socket of ratchet 131 again.

The lifting frame 110 is equipped with knob 111；The knob 111 is fixed on the upper end of lifting frame 110, the lifting frame 110 lower end has first crossbeam 112, and the rear end of the first crossbeam 112 is hinged with first connecting rod 119a, the first crossbeam 112 front end is hinged with second connecting rod 119b, and the first connecting rod 119a is fixed in the second connecting shaft 122.

When second connecting shaft 122 is to rotate clockwise, the first connecting rod 119a is also to rotate clockwise, the lifting frame 110 from initial position to be rotated clockwise to final position during, the lifting frame 110 first increases to be declined again, it is described just Position when beginning position is first connecting rod 119a and second connecting rod 119b parallel with first crossbeam 112.The final position is The position for the maximum angle that first connecting rod 119a can be rotated, the initial position that the first connecting rod 119a is rotated to terminal The slewing area of position is corresponding with the preset slewing area of the ratchet 131.

There are two supporting rod 113, the lap bars 114 of two supporting rods 113 of connection and two fixations for the tool of the lifting frame 110 Cylinder 115, two fixed cylinders 115 are fixed on the leaning to one side of the first crossbeam 112, and the lower end of the supporting rod 113 is stretched into described In fixed cylinder 115, the lap bars 114 are located at the top of the fixed cylinder 115, and the fixed cylinder 115 has multiple limit holes, The multiple limit hole is arranged in a row up and down.

There is lifting adjuster, the lifting adjuster to have regulation button 116,117 and of iron wire in the lifting frame 110 Bayonet lock 118；The iron wire 117 is penetrated from a supporting rod 113, by lap bars 114, is pierced by from another supporting rod 113, The both ends of the iron wire 117 are fixedly connected with the bayonet lock 118 respectively, and the bayonet lock passes through limit hole；The regulation button 116 With mandril, the mandril is scheduled on the iron wire 117.The both ends of the iron wire 117 are cased with bayonet lock spring, the bayonet lock spring One end resists bayonet lock 118, and the other end resists supporting rod 113, and the bayonet lock spring is cased with anti-torsion set, prevents bayonet lock spring bending.

The height of the lifting frame 110 is adjustable, wherein the intensity of two fixed cylinders 115 is sufficiently large, two supporting rods 113 positions stretched out from two fixed cylinders 115 are more, and the lifting frame 110 is higher.

The height of the lifting frame 110 can also have by the lifting adjuster come what is adjusted in regulation button 116 The lap bars 114 are withstood in one end of two little springs, the little spring, and the other end resists the regulation button 116, presses Regulation button 116, mandril withstand the iron wire 117, and 117 both ends of iron wire are in compressed state, institute to middle shrinkage, bayonet lock spring Bayonet lock is stated from the limit hole pinch in, then adjusts the relative position of supporting rod 113 and the fixed cylinder 115 and then adjusts lifting The height of frame 110 unclamps the regulation button 116, and two little springs extend naturally, and the bayonet lock spring extends naturally, described Limit hole is stretched out in 118 fixed cylinder 115 of bayonet lock, so that supporting rod 113 is fixed in fixed cylinder 115.It is adjusted by being lifted Device adjusts the height of lifting frame 110, and the height of lifting frame 110 can be matched from the people of different heights.

The lifting frame 110 is in lifting process：Hand lever 140 is pulled repeatedly, realizes 110 intermittent uplifts of lifting frame, hand When pull rod 140 rotates counterclockwise, first connecting shaft 121 rotates counterclockwise, and the first gear 123 rotates counterclockwise, band It moves the second gear 124 to rotate clockwise, the second gear 124 rotates clockwise, and the second connecting shaft 122 is also with the second tooth Wheel 124 rotates clockwise, and the second connecting shaft 122 drives first connecting rod 119a to rotate clockwise, and first connecting rod 119a is by traverse shape State is to upright state, and lifting frame 110 rises, and when hand lever 140 only rotates counterclockwise, lifting frame 110 can be just lifted, when pulling When bar 140 rotates clockwise, because of the first unilateral bearing 125, first rotation axis cannot be driven to rotate, therefore pulled When rotating clockwise of bar 140, lifting frame 110 are stationary (do not rise and do not drop).

To make lifting frame 110 decline, hand lever 140 is pulled counterclockwise, ratchet is made to rotate clockwise, until the first limit Pin 134 pushes ratchet sleeve 133, allows ratchet sleeve 133 to push pawl 132 from the tooth socket in ratchet 131 open, ratchet sleeve 133 is stuck in Between the pawl 132 and ratchet 131, at this point, the ratchet 131 can rotate counterclockwise, first connecting rod is rotated counterclockwise 119a, the lifting frame 110 decline, at this point, the second connecting shaft 122 rotates counterclockwise, ratchet 131 rotates counterclockwise, and described the Two gears 124 rotate counterclockwise, and second gear 124 drives the first gear 123 to rotate clockwise.Because of 123 He of first gear The second unilateral bearing 126 is equipped between first connecting shaft 121, therefore first connecting shaft 121 is not rotated with first gear 123, Therefore, for lifting frame 110 during decline, the hand lever 140 is stationary.

Embodiment 2：

It will pull in the setting to the arm-rest frame on the left side of chair frame 200 and right side of lifting device 100, the chair frame 200 is set There are chair frame back 210 and left handrail frame 220 and right handrail frame 230；The left handrail frame 220 has front support leg 221 and second Crossbeam 222；The second cross beam 222 connects chair frame back 210 and the upper end of front support leg 221；The left handrail frame 220 is helped with the right side Hand cradle 230 is symmetrical.

It is respectively and fixedly provided on the left handrail frame 220 and right handrail frame 230 and pulls lifting device 100；Wherein, described first connects Spindle 121 and the second connecting shaft 122 pass through second cross beam 222, and the gear set 120 and automatic division ratchet mechanism 130 are close The outside of the second cross beam 222, the first connecting rod 119a close to the inside of second cross beam 222, the second connecting rod 119b with The second cross beam 222 is hinged.

When using having the auxiliary lift chair for pulling lifting device 100, the lifting frame 110 is supported on the armpit of people Under, left hand pulls the pull rod, pull rod counterclockwise that gear set 120, gear set 120 is driven to drive the lifting frame simultaneously with the right hand 110 rotations, wherein the first connecting rod 119a in lifting frame 110 and second connecting rod 119b are rotated clockwise.

The outside of the second cross beam 222 is fixed with the first spring, and the lower end of first spring is fixed on second cross beam 222 outside, the other end connect the head of the pawl 132, and the pawl 132 and the outside of the second cross beam 222 are cut with scissors It connects, when ratchet 131 is to rotate clockwise, the tooth socket for stretching into ratchet 131 repeatedly of pawl 132 and the tooth for exiting ratchet 131 The two actions of slot, the tooth socket that first spring stretches into ratchet 131 for pawl 132 provide power.

The chair frame back 210 is set there are two second spring 211, and the chair frame back 210 passes through described two second Spring 211 is connected with two hand levers 140 respectively, and the second spring 211 can limit the model that hand lever 140 rotates clockwise It encloses, when people accidentally pull hand lever 140 excessive, hand lever 140 can provide certain support force for people, avoid people Fall down.

The front end of the second cross beam 222 is equipped with limited block 223, and the limited block 223 is used to be used as second connecting rod 119b Rotation boundary, it is that second connecting rod 119b is suitable to have damping spring, 223 position of the limited block on the limited block 223 The extreme position of hour hands rotation, the damping spring on the limited block 223 work as a buffer, avoid making second connecting rod 119b direct Limited block 223 is struck, the sense of discomfort of hard landing is avoided.

The fixation of telescopic synchronizing bar 300, the synchronizing bar 300 is solid with the upper end of two lifting frame 110 respectively Fixed connection, the distance of the upper end of two lifting frame 110 can be adjusted by synchronizing bar 300, allow left side and right side as possible Lifting frame 110 can be supported on the oxter of people.

The inside of the second cross beam 222 is equipped with partition board, and the partition board is as first connecting rod 119a and second connecting rod 119b The boundary rotated counterclockwise.

In this embodiment, after human body is stood firm, pull lifting frame 140 to second connecting rod 119b into contact with limited block When 223, ratchet sleeve 133 is turned under the action of the first spacer pin 134 and is just contacted with pawl 132 at this time, and pawl 132 is small Ratchet sleeve 133 is pushed down under the pulling of spring, ratchet 131, pawl 132 detach at this time, then first connecting rod 119a can be counterclockwise Rotation.It (will be contacted with shelf) when rotation is close to initial position, the second spacer pin 135 is just set aside ratchet sleeve 133 is past When first connecting rod 119a, second connecting rod 119b and shelf completely attach to, ratchet 131, pawl 132 just contact again.

The downside with the auxiliary lift chair for pulling lifting device can be provided with closestool 400, and the closestool 400 wraps Include backrest 410 and toilet seat 420；The closestool 400 is set to 200 lower section of chair frame, and closestool 400 is arranged below chair frame 200, can To facilitate handicapped person to go to toilet, handicapped person can utilize and stand up with the auxiliary lift chair for pulling lifting device 100.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims (10)

1. one kind pulling lifting device, which is characterized in that including：

Gear set is connected with hand lever, and the hand lever is for driving the gear set；

Lifting frame is connected with the gear set, and lifting frame rises or falls described in the gear set drive of rotation；

Automatic division ratchet mechanism, the automatic ratchet mechanism are connected with the gear set, and the automatic division ratchet mechanism is set There are ratchet, pawl and automatic division component；

When ratchet rotates clockwise and the ratchet is more than the first preset slewing area, the automatic division component makes ratchet It is detached with pawl；When ratchet rotates counterclockwise and the ratchet is more than the second preset slewing area, the automatic division group Part makes ratchet and pawl engage.

2. one kind pulling lifting device according to claim 1, it is characterised in that：The gear set be equipped with the first connecting shaft, Second connecting shaft, the first gear being sleeved in the first connecting shaft, the second gear being sleeved in the second connecting shaft, the first unilateral bearing With the second unilateral bearing, first unilateral bearing is sleeved in the first connecting shaft and is fixedly connected with the hand lever, and described Two unilateral bearings are set between the first connecting shaft and first gear, the first gear and second gear engagement.

3. one kind pulling lifting device according to claim 2, it is characterised in that：The automatic division component is equipped with and is sleeved on spine Ratchet sleeve on wheel, the first spacer pin and the second spacer pin being set on the end face of the ratchet, the ratchet sleeve in sector, When the ratchet rotated clockwise is more than the first preset slewing area, first spacer pin pushes the ratchet sleeve, described Ratchet sleeve pushes pawl that pawl is made to be detached with the ratchet；When the ratchet rotated counterclockwise is more than the second preset slewing area When, second spacer pin pushes ratchet sleeve, ratchet pawl reset to be engaged with the ratchet.

4. one kind pulling lifting device according to claim 3, it is characterised in that：The lifting frame is equipped with knob；The drawing Hand is fixed on the upper end of lifting frame, and the lower end of the lifting frame has a first crossbeam, and the rear end of the first crossbeam is hinged with the The front end of one connecting rod, the first crossbeam is hinged with second connecting rod, and the first connecting rod is fixed in the second connecting shaft；

The lifting frame also have there are two supporting rod, connect two supporting rods lap bars and two fixed cylinders, two fixed cylinders It is fixed on the leaning to one side of the first crossbeam, the lower end of the supporting rod is stretched into the fixed cylinder, and the lap bars are located at institute The top of fixed cylinder is stated, there are the fixed cylinder multiple limit holes, the multiple limit hole to be arranged in a row up and down.

5. one kind according to claim 4 pulls lifting device, it is characterised in that：In the lifting frame there is lifting to adjust Device, the lifting adjuster have regulation button, iron wire and bayonet lock；The iron wire is stretched into from a supporting rod, by overlap joint Bar is pierced by from another supporting rod, and the both ends of the iron wire are fixedly connected with the bayonet lock, and the bayonet lock passes through limit hole； There is the regulation button mandril, the mandril to be scheduled on the iron wire.

6. a kind of having the auxiliary lift chair for pulling lifting device, which is characterized in that including：

Chair frame, is equipped with chair frame back and left handrail frame and right handrail frame, and the left handrail frame has front support leg and second cross beam； The upper end at the second cross beam connection chair frame back and front support leg；The left handrail frame and right handrail frame are symmetrical；

It is respectively and fixedly provided on the left handrail frame and right handrail frame and lifting device is pulled according to claim 4 to 5 any one of them； Wherein, first connecting shaft and the second connecting shaft pass through second cross beam, and the gear set and automatic division ratchet mechanism are close On the outside of the second cross beam, the first connecting rod is cut with scissors close to the inside of second cross beam, the second connecting rod with the second cross beam It connects.

7. according to claim 6 a kind of with the auxiliary lift chair for pulling lifting device, it is characterised in that：Further include One end of one spring, first spring is fixed on the outside of the second cross beam, and the other end is connected with pawl.

8. according to claim 6 a kind of with the auxiliary lift chair for pulling lifting device, it is characterised in that：The chair frame Back is set there are two second spring, and the chair frame back is connected with two hand levers respectively by two second springs.

9. according to claim 6 a kind of with the auxiliary lift chair for pulling lifting device, it is characterised in that：Further including can The fixation of flexible synchronizing bar, the synchronizing bar is fixedly connected with the upper end of two lifting frame respectively.

10. according to claim 6 a kind of with the auxiliary lift chair for pulling lifting device, it is characterised in that：Described The front end of two crossbeams is equipped with limited block, and the limited block is for the rotation boundary as second connecting rod；

The inside of the second cross beam is equipped with partition board, the boundary that the partition board is rotated counterclockwise as first connecting rod and second connecting rod Limit.