CN116236361A

CN116236361A - Multifunctional lifting chair

Info

Publication number: CN116236361A
Application number: CN202310456025.1A
Authority: CN
Inventors: 刘智浩; 杨卫; 袁张彬; 王佳佳; 范志祥
Original assignee: Zhejiang Maideste Medical Device Technology Co ltd
Current assignee: Zhejiang Maideste Medical Device Technology Co ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-06-09

Abstract

The invention relates to a multifunctional lifting chair, which comprises a fixed frame, wherein the fixed frame is connected with a backrest frame in a sliding way, the bottom of the backrest frame is rotationally connected with a stool component, a lifting mechanism is arranged between the fixed frame and the backrest frame, and the lifting mechanism drives the backrest frame to move up and down on the fixed frame so as to drive the stool component to lift; the fixed frame is assembled on the base mechanism; according to the multifunctional lifting chair, the lifting mechanism can efficiently realize different initial heights of the sitting stool of the lifting chair, and meanwhile, the backrest frame is rotationally connected with the sitting stool assembly and is switched between a storage state and a seat supply state; that is, giving the old people in the condition of inconvenient actions more autonomy; helping the elderly to stand up with minimal effort when falling down at home.

Description

Multifunctional lifting chair

Technical Field

The invention belongs to the technical field of lifting chairs, and particularly relates to a multifunctional lifting chair.

Background

With the development and progress of science and technology, the living and medical level of people is continuously improved, and the health problem of the body is also concerned, especially the health problem of the old, and the heart of the thousands of children is pulled at any time.

Many devices are known that can assist people with impaired mobility, or allow them to maintain their autonomy, or facilitate daily efforts by third parties to assist them. Especially the elderly in the solitary are easily injured once they fall. Young people with temporary or permanent disabilities may also need assistance to get up if they find themselves falling to the ground. If a third person is present, he can help the patient get up, sometimes at a great physical effort, which can be detrimental to the third person's health, especially for overweight patients. The risk of losing balance or mishandling when lifting the patient is also not zero. Patients who prefer self-management may also be intolerant of direct assistance from third parties.

Patent document FR3086168 discloses a small elevator for disabled persons; it comprises a seat movable in height along the mat on which the patient sits by placing his legs on either side of the mat. If such a device can easily transfer a disabled person from a wheelchair to another place, it is not suitable for lifting a person on the ground; patent document GB2344579 proposes an alternative device which allows the patient to be mounted on a wheelchair, but which is not suitable for lifting it when dropped to the ground.

In view of the above-described problems, improvements are needed.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides the multifunctional lifting chair which is simple and reasonable in structure, can help the fallen old people to stand, and can be used as a common conventional chair.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a multifunctional lifting chair comprises a fixed frame, a backrest frame is slidably connected with the fixed frame, a stool component is rotatably connected to the bottom of the backrest frame, a lifting mechanism is arranged between the fixed frame and the backrest frame, and the lifting mechanism drives the backrest frame to move up and down on the fixed frame so as to drive the stool component to lift; the fixed frame is assembled on the base mechanism.

As a preferable mode of the invention, the lifting mechanism comprises a lifting motor fixedly arranged on a fixed frame, the backrest frame is connected with the lifting shaft output end of the lifting motor, and the backrest frame can move up and down along the lifting shaft.

As a preferred mode of the present invention, the elevating chair has an unfolded state and a folded storage state, and when the elevating chair is converted from the unfolded state to the folded storage state, the bench assembly is pivoted about the second pivot with respect to the back frame such that the upper surface of the bench assembly is brought close to the front surface of the back frame.

In a preferred mode of the invention, the inner side of the upper part of the backrest frame is symmetrically provided with backrest reinforcing ribs, and the front end of the backrest frame is provided with a backrest.

As a preferable mode of the invention, the two sides of the backrest frame are fixedly provided with the connecting seats, and the connecting seats are rotatably connected with handrails.

As a preferred mode of the invention, the stool assembly is connected with the backrest frame through a stool connector.

As a preferable mode of the invention, the stool connecting piece comprises a top plate and side plates fixedly arranged on two sides of the top plate, and the front ends of the bottoms of the side plates are downwards provided with mounting plates; roof, curb plate and mounting panel fixed connection, integrated into one piece.

As a preferable mode of the invention, an assembling cavity is formed between the top plate and the two side plates, and the bottom of the backrest frame is fixedly arranged in the assembling cavity; wherein, curb plate and mounting panel level are laid, and the curb plate is all circular arc transition structure with the mounting panel junction upper and lower extreme, forms S type structure between curb plate and the mounting panel.

As a preferable mode of the invention, the front side of the bottom of the mounting plates is in an arc structure, a pivot is assembled between the two mounting plates, the pivot is connected with the upper end of the stool reinforcing rib in a rotating way, and the lower end of the stool reinforcing rib is fixedly arranged at the end part of the stool component.

As a preferred mode of the invention, the bench assembly includes a bench main frame on which a bench is mounted.

As a preferable mode of the invention, the stool reinforcing rib comprises a positioning plate, reinforcing plates assembled on two sides of the positioning plate, and the positioning plate is fixedly connected with the reinforcing plates on two sides and integrally formed.

As a preferable mode of the invention, the bottom of the positioning plate is abutted against the main frame of the stool, the upper end of the reinforcing plate penetrates through the pivot, and the bottom of the reinforcing plate and the bottom of the main frame of the stool are on the same horizontal plane.

As a preferred mode of the invention, when the lifting mechanism is in the initial state and the bench assembly is in the unfolded state, the bench main frame bottom level is lower than the mounting plate bottom level.

As a preferable mode of the invention, the base mechanism comprises connecting plates fixedly arranged at two sides of the fixed frame, and the rear end of each connecting plate is connected with the base through a first pivot; the baffle plate for positioning the base is fixedly arranged on the outer side of the connecting plate.

As a preferable mode of the invention, plugs are inserted at two sides of the base.

As a preferable mode of the invention, a plurality of feet are arranged at the bottom of the base.

In a preferred mode of the present invention, a wheel is mounted at the rear end of the base, wherein the distance between the wheel and the first pivot is L, and the distance between the first pivot and the baffle is H, and H > L.

In a preferred mode of the invention, a lock nut is mounted on the first pivot, and the lock nut is mounted on the connecting plate in a fitting manner.

Compared with the prior art, the lifting chair provided by the invention has the following advantages:

1. according to the multifunctional lifting chair, the lifting mechanism can efficiently realize different initial heights of the sitting stool of the lifting chair, and meanwhile, the backrest frame is rotationally connected with the sitting stool assembly and is switched between a storage state and a seat supply state; that is, giving the old people in the condition of inconvenient actions more autonomy; helping the elderly to stand up with minimal effort when falling down at home.

2. The present invention provides a device that is both convenient and robust and is suitable for independent use by a patient. It is an object of the present invention to provide an auxiliary device for persons with impaired mobility, which allows them to use it completely independently, the device being easy to use without the aid of a third party; the convenience and the safety of the use are improved.

3. The invention has simple structure, can store and place the whole base mechanism through the rotary connection of the connecting plate and the base, is convenient for transportation, and meanwhile, the outer side of the connecting plate is fixedly provided with the baffle plate for positioning the base, and the arranged baffle plate is matched with the first pivot and is used for positioning the base on the connecting plate, thereby providing safety guarantee for the use of the subsequent lifting chair.

Drawings

FIG. 1 is a side view of a lift chair according to an embodiment of the present invention;

FIG. 2 is a view showing a use state of the elevating chair according to the embodiment of the present invention;

FIG. 3 is a schematic view of a lifting chair according to an embodiment of the present invention;

FIG. 4 is a schematic view of a stool connector in accordance with an embodiment of the present invention;

FIG. 5 is a schematic view of the structure of a stool reinforcement according to an embodiment of the present invention;

FIG. 6 is a schematic view (one) of a base unit according to an embodiment of the present invention;

FIG. 7 is a schematic view of a base unit according to an embodiment of the present invention;

reference numerals in the drawings: the seat comprises a fixed frame 1, a backrest frame 2, a seat assembly 3, a lifting mechanism 4, a seat connecting piece 5, a seat reinforcing rib 6, a connecting plate 7, a base 8, a baffle 9, a first pivot 10, a plug 15, a foot 17, wheels 18, a connecting seat 20, an armrest 22, a backrest reinforcing rib 23, a backrest 24, a seat main frame 30, a seat 31, a lifting motor 40, a lifting shaft 41, a top plate 50, a side plate 51, a mounting plate 52, a circular arc transition structure 53, a mounting cavity 54, a second pivot 55, a circular arc structure 56, a positioning plate 60, a reinforcing plate 61 and a base mechanism 100.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Examples:

1-3, a lifting chair according to an embodiment of the invention is shown in schematic structure; specifically, the lifting chair comprises a fixed frame 1, a backrest frame 2 is slidably connected with the fixed frame 1, a stool component 3 is rotatably connected to the bottom of the backrest frame 2, a lifting mechanism 4 is arranged between the fixed frame 1 and the backrest frame 2, and the lifting mechanism 4 drives the backrest frame 2 to move up and down on the fixed frame 1 so as to drive the stool component 3 to lift; the fixed frame 1 is assembled to the base unit 100.

It will be understood by those skilled in the art that in the description of the embodiments of the present invention, the front-back, left-right, up-down directions are all the directions in which the lift chair is normally used, for example, the front direction of the back frame 2, that is, the front direction, the rear direction of the back frame 2, that is, the left direction, that is, the right direction, of the back frame 2.

The fixed frame 1, the back frame 2 and the bench assembly 3 are made of a rigid material rated to withstand the applied forces without bending or incurring other damage; an important aspect of the back frame 2 and the fixed frame 1 is its robustness. In particular, when the elderly sits down on the stool assembly 3, the stool assembly 3 receives a large force with the fixed frame 1. For the comfort and safety of the elderly, it is important that the fixed frame 1 and the back frame 2 maintain a relative positional relationship, including in the case of placing a weight on the bench assembly 3. For this purpose, the backrest frame 2 and the fixed frame 1 may be sufficiently strong steel pipes so that their deformations remain minimal or zero; the fixed frame 1 plays a role in stabilizing at the bottom, steel pipes at two sides of the backrest frame 2 are sleeved in the steel pipes of the fixed frame 1, the backrest frame 2 is driven to move up and down by the lifting mechanism 4, the movement track and the travel are consistent,

the bench assembly 3 can thus be lowered to the ground. The fixing frame 1 and the backrest frame 2 are designed in such a way that the necessary robustness is maintained, while at the same time the ergonomics and the applicability of the device in many different situations are improved; giving the old more autonomy in the case of mobility impairment.

The bench assembly 3 can be raised to a desired height while remaining level to expand the range of applications, specifically, in this embodiment, the bench 31 has a range of travel of 0-500 mm.

According to the lifting chair, the lifting mechanism 4 can efficiently realize different initial heights of the sitting stool of the lifting chair, and meanwhile, the backrest frame 2 is rotatably connected with the sitting stool assembly 3, so that the chair can be switched between a storage state and a seat supply state.

In addition, the stool assembly 3 and the base mechanism 100 are matched, and the stool assembly 3 can always bear the supporting force from the base mechanism 100, so that the old can be assisted to change from the inverted posture to the sitting or standing posture in the lifting process of the lifting chair.

The invention ensures that the up-and-down adjusting process of the backrest frame 2 and the stool component 3 is more slow and stable by arranging the lifting mechanism 4, is easy to control, has simple structure and is convenient to install and maintain.

In addition, the lifting mechanism 4 is positioned in the middle of the backrest frame 2 and the stool assembly 3, so that the width between the front and the rear of the lifting chair is not occupied, the space utilization rate is high, and the using attractiveness and the storage attractiveness are greatly improved when the lifting chair is folded into a flat shape.

Specifically, the lifting mechanism 4 includes a lifting motor 40 fixed on the fixed frame 1, the backrest frame 2 is connected to an output end of a lifting shaft 41 of the lifting motor 40, and the backrest frame 2 can move up and down along the lifting shaft 41. The lift motor 40 may be electrically connected to a control mechanism, which may be a handle-type structure, through wires for controlling the lift and speed of the lift motor 40.

In particular use, the lift motor 40 drives the back frame 2 and the bench assembly 3 to move upwardly along the lift shaft 41. In the initial position, the bench assembly 3 is generally horizontal and is close to or attached to the ground, and the bench assembly 3 is in a sitting position to assist the elderly, if they fall to the ground, to be unable to get up without assistance. The present lift chair provides support and comfort for the movement of the elderly, as well as assistance that may prove critical in the case of isolated patients.

When the old people struggle to sit on the stool assembly 3 by himself, the stool assembly 3 moves further upwards along with the backrest frame 2 by pressing a control mechanism (not shown), until the old people on the stool assembly 3 are at a reasonable position, the control mechanism is pressed, so that the lifting motor 40 stops working; when the use is finished, the lifting motor 40 drives the backrest frame 2 and the stool assembly 3 to move downwards, and when the stool assembly 3 approaches or is attached to the ground, the lifting motor 40 stops working, and the stool assembly 3 is approximately in a horizontal state, and at this time, the stool assembly 3 is folded and stored.

In the above movement process, the working state of the lifting motor 40 is controlled by a control mechanism (not shown in the figure), and the control mechanism presets information such as the working state and the working time of the lifting motor 40, so that the telescopic amount of the lifting motor 40 just enables the stool assembly 3 to be in the storage state and the seating state. The control mechanism controls the expansion and contraction amount of the lifting motor 40, which belongs to the prior art and will not be described in detail herein. In addition, since the telescopic movement of the lifting motor 40 has more efficient reciprocating movement than the screw rod mechanism, the storage state can be changed into the seat supplying state more quickly, so that a user has better use experience. Of course, the seat-supplying state is changed into the storage state, and the expansion and contraction rate of the lifting motor 40 can be set according to the actual requirement of assisting the user in standing, so as to achieve better experience, and the description is omitted herein.

The lift chair has an extended state and a folded storage state, and when the lift chair is converted from the extended state to the folded storage state, the bench assembly 3 rotates relative to the back frame 2 about the pivot 55 so that the upper surface of the bench assembly 3 approaches the front surface of the back frame 2; when the lifting chair is not used, the lifting chair can be folded into a flat shape, the volume of the whole lifting chair is reduced, and the shape of the lifting chair is changed into a flat shape convenient to store, so that the lifting chair is easy to store.

The upper inner side of the backrest frame 2 is symmetrically provided with backrest reinforcing ribs 23, so that the structural strength and the overall firmness of the whole backrest frame 2 are improved, the use safety is further ensured, and the backrest 24 is arranged at the front end of the backrest frame 2.

The two sides of the backrest frame 2 are fixedly provided with connecting seats 20, and armrests 22 are rotatably connected to the connecting seats 20. The patient can rest on the armrest 22 to position himself on the seat 31 of the seat assembly 3. The armrest 22 itself must be strong and support the weight of the elderly. In particular, they should not sag under the weight of the elderly person, and they should not move toward the inside or toward the outside of the bench 31 when the elderly person strives to lift themselves onto the bench assembly 3. The armrests 22 are advantageously fixed to the back frame 2 of the connecting seat 20, with rigidity and solidity that enable them to support the efforts of the elderly.

The armrest 22 is advantageously retractable to facilitate access to the bench 31 by elderly people; the armrest 22 may be pivoted upwardly, for example, from a position where support is available toward a retracted position. Such a retracted position corresponds, for example, to an orientation of the armrests parallel to the longitudinal axis of the side frame in the plane formed by the back frame 2. The position in which support is allowed generally corresponds to the orientation of the armrest 22 parallel to the axis of the bench 31. Is arranged to allow the armrest 22 to rotate from one of a supported and a position. Retracting toward each other. They may, for example, comprise a rotation axis about which the respective armrest 22 may pivot and a slot allowing the armrest 22 to pass between two support positions and a retracted position.

The stool assembly 3 is connected with the backrest frame 2 through a stool connecting piece 5; the whole lifting chair can be folded for storage, the folding mode is that the backrest frame 2 is a fixed point, the folding stool assembly 3 and the base 8 can be simultaneously realized, and the stool assembly 3 can be close to or attached to the ground under the initial state by arranging the stool connecting piece 5.

In this embodiment, the bench assembly 3 is connected to the lower part of the back frame 2 through the bench connector 5 and the bench stiffener 6, and when the lift chair is converted from the unfolded state to the folded state, the connector 3 rotates around the first pivot 11 toward the side of the back frame 2 until the bench assembly 3 is fully abutted against the side of the back frame 2, and the pivot 55 is directly used to enable rotation among the back frame 2, the bench assembly 3 and the bench stiffener 6.

It should be noted that the upper surface of the bench assembly 3 is preferably abutted against the front surface of the backrest frame 2, wherein the "abutment" is to highlight that the lifting chair is compact in the folded and stored state, for example, a gap between two objects abutted against each other may be defined to be less than 8mm, and the gap is preferably less than 5mm or 2mm.

As shown in fig. 4, a schematic structural diagram of the bench connector 5 in this embodiment is shown, specifically, the bench connector 5 includes a top plate 50, side plates 51 fixed on two sides of the top plate 50, and a mounting plate 52 is disposed at the front end of the bottom of the side plate 51 downward; the top plate 50, the side plate 51 and the mounting plate 52 are fixedly connected and integrally formed; the structural strength and the overall firmness of the whole stool connecting piece 5 are improved, and the use safety is further ensured.

An assembling cavity 54 is formed between the top plate 50 and the two side plates 51, and the bottom of the backrest frame 2 is fixedly arranged in the assembling cavity 54; wherein, curb plate 51 and mounting panel 52 level are laid, and curb plate 51 and mounting panel 52 junction upper and lower extreme all are circular arc transition structure 53, set up to be circular arc transition structure 53 and avoided in the use and accomodate the in-process, increase and old man's area of contact when bumping by mistake, and then guarantee the security of use.

The S-shaped structure is formed between the side plate 51 and the mounting plate 52, and the structure is adopted, so that the connection between the stool assembly 3 and the backrest frame 2 is more ingenious, the stool assembly 3 is positioned at the bottom of the backrest frame 2, the stool assembly 3 can be maximally limited to be close to the ground, meanwhile, excessive collision between the stool assembly 3 and the fixed frame 1 is avoided, and meanwhile, the stool assembly 3 can be turned by 0-90 degrees, so that the stool assembly is convenient to store.

The front side of the bottom of the mounting plates 52 is provided with an arc structure 56, a pivot 55 is assembled between the two mounting plates 52, the pivot 55 is rotatably connected with the upper end of the stool reinforcing rib 6, and the lower end of the stool reinforcing rib 6 is fixedly arranged at the end part of the stool assembly 3.

The stool assembly 3 includes a stool main frame 30, and a stool 31 is mounted on the stool main frame 30; the bench 31 may be a fabric or leather or rubber flexible seat or made of synthetic polymer.

As shown in fig. 5, the structure of the seat reinforcing rib 6 in this embodiment is schematically shown, specifically, the seat reinforcing rib 6 includes a positioning plate 60, reinforcing plates 61 assembled on two sides of the positioning plate 60, and the positioning plate 60 is fixedly connected with the reinforcing plates 61 on two sides, and is integrally formed. The structural strength and the integral firmness of the whole stool reinforcing rib 6 are improved, and the use safety is further ensured.

Moreover, the locating plate 60 that sets up is located the junction of stool main frame 30 and stool connecting piece 5 for the design of whole structure is ingenious more, and locating plate 60 is 45 and is connected with stool main frame 30, makes stool main frame 30 more nimble in folding process, and locating plate 60 just supports on leaning on back frame 2.

The bottom of the positioning plate 60 is abutted against the main stool frame 30, the upper end of the reinforcing plate 61 passes through the pivot 55, and the bottom of the reinforcing plate 61 and the bottom of the main stool frame 30 are on the same horizontal plane; by the arrangement, the main stool frame 30 can be close to or attached to the ground, so that the old can conveniently move to the stool.

When the lifting mechanism 4 is in the initial state and the bench assembly 3 is in the unfolded state, the bottom horizontal surface of the bench main frame 30 is lower than the bottom horizontal surface of the mounting plate 52; in particular, the bottom of the bench main frame 30 is lowered to a distance near the horizontal plane of the base 8, for example, about 10-30mm. In this way, the bench main frame 30 can be easily brought into contact with the ground. The thickness of the bench 31 is also thin enough to limit or avoid any obstruction of the patient on the ground. In particular, once the patient on the ground is in a low position, the patient can easily slide onto the stool 31. For this purpose, the thickness of the bench 31 is preferably less than 1cm, preferably less than 5mm. The bench assembly 3 may have a thickness on the order of 1 to 2cm to improve overall structural strength and firmness.

As shown in figures 6-7 of the drawings,

wheels 18 for pushing the lift chair are installed at the rear end of the base 8 of the base mechanism 100, so that the lift chair can be moved by the wheels 18 when the base 8 is turned over from the connection plate 7; furthermore, the wheels 18 are positioned at the rear end of the base 8, which does not occupy space.

The bench assembly 3 is free to switch between a horizontal use condition and an upright storage condition. And, armrests 22 are provided on both sides above the back frame 2 to switch from the horizontal use state to the upright storage state.

Therefore, when the seat assembly 3 and the armrest 22 are folded upward, the base 8 is rotated from the connection plate 7 of the base mechanism to the back frame 2, and the base 8 is bound with the back frame 2 and the seat assembly 3 by the binding belt, the entire elevating chair becomes compact without protrusions, and thus is stored in a small space, facilitating the transportation. And, preferably, the wheels 18 can freely change their rolling direction.

Of course, for the safety of the elderly, a safety belt (not shown) may be provided on the backrest 24 to maintain safety when the stool 31, where the elderly sits, is lifted and lifted, since the elderly cannot accidentally fall off the chair, thereby ensuring safety of use.

FIGS. 6-7 are schematic views of the base unit of an embodiment of the present invention; specifically, the base mechanism comprises connecting plates 7 fixedly arranged at two sides of the fixed frame 1, and the rear end of the connecting plate 7 is connected with a base 8 through a first pivot 10; a baffle 9 for positioning the base 8 is fixedly arranged on the outer side of the connecting plate 7; the invention has simple structure, the whole base mechanism can be stored and placed through the rotary connection of the connecting plate 7 and the base 8, the transportation is convenient, meanwhile, the baffle plate 9 for positioning the base 8 is fixedly arranged on the outer side of the connecting plate 7, and the arranged baffle plate 9 is matched with the first pivot 10 and used for positioning the base 8 on the connecting plate 7, so that the safety guarantee is provided for the use of the subsequent lifting chair.

Plugs 15 are inserted at two sides of the base 8; the plug 15 is made of insulating or plastic materials, and the plug 15 can be used for enabling the whole base 8 to be in a sealed state, so that an attractive effect is achieved.

The bottom of the base 8 is provided with a plurality of feet 17; in this embodiment, 3 feet 17 are provided at the bottom of the base 8 on each side, and the feet 17 in the middle are located at the lower part of the baffle 9.

According to the invention, six feet 17 are arranged, the base 8 can be inclined within a preset height range, so that the whole base mechanism is slightly inclined forwards, the old man can be conveniently assisted to move to the lifting chair, the height of the base mechanism can be adjusted by the six feet 17, the stress of the base mechanism is more uniform, and in addition, as the feet are assembled at the lower part of the base 8, a certain vibration energy can be consumed, so that the effect of relieving vibration is achieved.

The rear end of the base 8 is provided with a wheel 18, wherein the distance between the wheel 18 and the first pivot 10 is L, and the distance between the first pivot 10 and the baffle 9 is H, and H is more than L; by adopting the technical scheme, the wheels 18 can not touch the baffle plate 9 in the whole overturning process of the base plate 8, wherein the overturning angle of the base plate 8 can almost reach 360 degrees, and the base plate 9 is overturned from the bottom of the baffle plate 9 to the top of the baffle plate 9; when the base 8 is turned from horizontal to vertical, the wheels 18 contact the ground, which can push the lift chair.

The first pivot 10 is provided with a lock nut 11, and the lock nut 11 is mounted on the connecting plate 7 in a fitting way; the first pivot 10 is fastened by the lock nut 11, so that the base 8 is fastened on the connecting plate 7, and the use safety is further ensured.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the reference numerals in the figures are used more herein: the seat comprises a fixed frame 1, a backrest frame 2, a seat assembly 3, a lifting mechanism 4, a seat connecting piece 5, a seat reinforcing rib 6, a connecting plate 7, a base 8, a baffle 9, a first pivot 10, a plug 15, a foot 17, wheels 18, a connecting seat 20, an armrest 22, a backrest reinforcing rib 23, a backrest 24, a seat main frame 30, a seat 31, a lifting motor 40, a lifting shaft 41, a top plate 50, a side plate 51, a mounting plate 52, a circular arc transition structure 53, a mounting cavity 54, a second pivot 55, a circular arc structure 56, a positioning plate 60, a reinforcing plate 61, a base mechanism 100 and other terms are not excluded; these terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.

Claims

1. A multifunctional lifting chair which is characterized in that: comprises a base mechanism (100) and a fixed frame (1); the fixed frame (1) is assembled on the base mechanism (100), the fixed frame (1) is connected with the backrest frame (2) in a sliding way, the bottom of the backrest frame (2) is rotationally connected with the stool component (3), a lifting mechanism (4) is assembled between the fixed frame (1) and the backrest frame (2), and the lifting mechanism (4) drives the backrest frame (2) to move up and down on the fixed frame (1) so as to drive the stool component (3) to lift; the lifting chair has an unfolding state and a folding and containing state, and when the lifting chair is converted from the unfolding state to the folding and containing state, the stool assembly (3) rotates around a second pivot (55) relative to the backrest frame (2) so that the upper surface of the stool assembly (3) is close to the front surface of the backrest frame (2); the base mechanism (100) comprises connecting plates (7) fixedly arranged on two sides of the fixed frame (1), and the rear end of each connecting plate (7) is connected with a base (8) through a first pivot (10); a baffle (9) for positioning the base (8) is fixedly arranged on the outer side of the connecting plate (7).

2. A multi-functional lift chair as claimed in claim 1 wherein: the lifting mechanism (4) comprises a lifting motor (40) fixedly arranged on the fixed frame (1), the backrest frame (2) is connected with the output end of a lifting shaft (41) of the lifting motor (40), and the backrest frame (2) can move up and down along the lifting shaft (41).

3. A multifunctional lifting chair according to claim 1 or 2, characterized in that: backrest reinforcing ribs (23) are symmetrically arranged on the inner side of the upper part of the backrest frame (2), and a backrest (24) is arranged at the front end of the backrest frame (2); connecting seats (20) are fixedly arranged on two sides of the backrest frame (2), and armrests (22) are rotatably connected to the connecting seats (20).

4. A multi-functional lift chair as claimed in claim 1 wherein: the stool assembly (3) is connected with the backrest frame (2) through a stool connecting piece (5); the stool connecting piece (5) comprises a top plate (50) and side plates (51) fixedly arranged on two sides of the top plate (50), and mounting plates (52) are downwards distributed at the front ends of the bottoms of the side plates (51); the top plate (50), the side plate (51) and the mounting plate (52) are fixedly connected and integrally formed.

5. The multi-functional lift chair of claim 4 wherein: an assembling cavity (54) is formed between the top plate (50) and the two side plates (51), and the bottom of the backrest frame (2) is fixedly arranged in the assembling cavity (54); the side plates (51) and the mounting plates (52) are horizontally arranged, the upper ends and the lower ends of the joints of the side plates (51) and the mounting plates (52) are all in arc transition structures (53), and an S-shaped structure is formed between the side plates (51) and the mounting plates (52).

6. A multi-functional lift chair in accordance with claim 5 wherein: the front sides of the bottoms of the mounting plates (52) are in arc structures (56), a pivot (55) is assembled between the two mounting plates (52), the pivot (55) is rotationally connected with the upper end of the stool reinforcing rib (6), and the lower end of the stool reinforcing rib (6) is fixedly arranged at the end part of the stool component (3).

7. The multi-functional lift chair of claim 4 wherein: the stool assembly (3) comprises a stool main frame (30), and a stool (31) is arranged on the stool main frame (30); when the lifting mechanism (4) is in an initial state and the stool assembly (3) is in a unfolded state, the bottom level of the main stool frame (30) is lower than the bottom level of the mounting plate (52).

8. The multi-functional lift chair of claim 6 wherein: the stool reinforcing rib (6) comprises a positioning plate (60), reinforcing plates (61) assembled on two sides of the positioning plate (60), and the positioning plate (60) is fixedly connected with the reinforcing plates (61) on two sides and integrally formed.

9. A multi-functional lift chair in accordance with claim 7 wherein: the bottom of the positioning plate (60) is abutted against the stool main frame (30), the upper end of the reinforcing plate (61) penetrates through the pivot (55), and the bottom of the reinforcing plate (61) and the bottom of the stool main frame (30) are on the same horizontal plane.

10. A multi-functional lift chair as claimed in claim 1 wherein: the rear end part of the base (8) is provided with a wheel (18), wherein the distance between the wheel (18) and the first pivot (10) is L, and the distance between the first pivot (10) and the baffle (9) is H, so that H is more than L; and a lock nut (11) is arranged on the first pivot (10), and the lock nut (11) is mounted on the connecting plate (7) in a fitting way.