CN104398033B - Interlinking lifting chair - Google Patents

Abstract

A linkage lift chair, comprising a left-right symmetrical footrest mechanism, a T-shaped seat plate, a seat plate lifting mechanism, a backrest mechanism, a seat frame and a telescopic push rod, the footrest mechanism is connected to the left end of the transverse section of the T-shaped seat plate, The lower end of the vertical section of the T-shaped seat plate is connected with the seat plate lifting mechanism, and the right end of the transverse section of the T-shaped seat plate is connected with the backrest mechanism. On the horizontal axis of the frame, the front end of the telescopic push rod is hinged with the middle beam, and the left and right ends of the middle beam are respectively fixedly connected with the middle part of the driving member. A spring connection is provided between the middle part of the first connecting rod and the T-shaped seat plate. The middle part of the seat board support is hinged with the first lifting link, the upper part of the first seat board support is hinged with the right end of the driving member, and the lifting mechanism is connected with the second seat board support. The invention has simplified structure, rich functions, convenient operation and low cost.

Description

Linkage chair lift

technical field

The invention relates to a chair structure, in particular to a lifting chair.

Background technique

With the development of social economy, people's living standards are improving day by day, and the phenomenon of aging of the elderly is increasing day by day. The quality of life of the elderly is not only a matter of children but also a problem that the society attaches great importance to. A comfortable and comprehensive function that can assist the elderly to stand The chair has brought a lot of help to the life of the elderly. Existing chairs for the elderly have complex structures, simple functions, difficult operation, bulky overall, cumbersome processing, and high prices, and there are certain problems while the elderly can live comfortably. Existing chair for the elderly belongs to a kind of lift chair.

Contents of the invention

In order to overcome the deficiencies of existing lift chairs such as complex structure, simple function, difficult operation, and high cost, the present invention provides a linked lift chair with simplified structure, rich functions, convenient operation, and low cost.

The technical solution adopted by the present invention to solve its technical problems is:

A linkage type lift chair, the lift chair includes a left-right symmetrical foot rest mechanism, a T-shaped seat plate, a seat plate lifting mechanism, a backrest mechanism, a seat frame and a telescopic push rod, and the upper space of the seat frame is sequentially arranged from left to right. It is a footrest mechanism, a T-shaped seat plate and a backrest mechanism, the T-shaped seat plate includes a transverse section and a vertical section, the footrest mechanism is connected with the left end of the transverse section of the T-shaped seat plate, and the T-shaped seat plate The lower end of the vertical section of the seat plate is connected to the seat plate lifting mechanism, the right end of the transverse section of the T-shaped seat plate is connected to the backrest mechanism, and the backrest mechanism is connected to the footrest mechanism through a linkage straight rod. The telescopic push rod The bottom is hinged on the horizontal axis of the seat frame, the front end of the telescopic push rod is hinged to the middle beam, the left and right ends of the middle beam are respectively fixedly connected to the middle part of the driving member, and the upper part of the front end of the driving member is provided with a groove , the groove is in contact with the upper pin of the first connecting rod on the footrest mechanism, and the lower part of the front end of the driving member is provided with a contact surface, and the contact surface is on the first lifting link on the seat plate lifting mechanism. Cooperate with the lower pin shaft of the footrest mechanism, a spring connection is provided between the middle part of the first connecting rod of the footrest mechanism and the T-shaped seat plate, the middle part of the seat frame is fixedly connected to the first seat plate support, and the rear end of the seat frame Fix the second seat board support, the middle part of the first seat board support is hinged with the first lifting link, the upper part of the first seat board support is hinged with the right end of the driving member, the lifting mechanism is connected with the The second seat board support connection; the hinge between the first link of the footrest mechanism and the T-shaped seat board and the hinge between the upper part of the first seat board support and the rear end of the driving member located at the same axis.

Further, the footrest mechanism is composed of the first connecting rod, the second connecting rod, the third connecting rod, the fourth connecting rod, the fifth connecting rod, the sixth connecting rod and the footrest plate, and the middle part of the first connecting rod is provided with The upper pin, the right end of the first connecting rod, the right end of the second connecting rod are hinged with the left end of the transverse section of the T-shaped seat plate, the left end of the first connecting rod is connected with the third connecting rod The right end is hinged, the middle part of the second connecting rod is hinged with the middle part of the third connecting rod, the left end of the second connecting rod is hinged with the right end of the fourth connecting rod, and the left end of the third connecting rod is connected with the right end of the fourth connecting rod. The right end of the fifth connecting rod is hinged, the middle part of the fourth connecting rod is hinged with the middle part of the fifth connecting rod, the left end of the fifth connecting rod is hinged with the left end of the footrest, and the fourth connecting rod is hinged with the left end of the footrest. The left end of connecting rod is hinged with the right end of described footrest.

Still further, the lifting structure includes a first lifting link, a second lifting link, a third lifting link and a fourth lifting link, one end of the first lifting link is connected to the first seat plate supported The middle part is hinged, the other end of the first lifting link is hinged with one end of the third lifting link, one end of the second lifting link is hinged with the lower end of the vertical section of the T-shaped seat plate, The other end of the second lifting link is hinged to the middle part of the second seat plate support, the other end of the third lifting link is hinged to the middle part of the fourth lifting link, and the fourth lifting link One end of the rod is hinged to the upper part of the second seat plate support, and the other end of the fourth lifting link is hinged to the middle part of the vertical section of the T-shaped seat plate.

Furthermore, the backrest mechanism includes a backrest and an L-shaped member, the backrest is fixed in the middle of the L-shaped member, one end of the L-shaped member is hinged to the right end of the transverse section of the T-shaped seat plate, and the L The other end of the shaped member is hinged with one end of the linkage straight rod, and the other end of the linkage straight rod is hinged with the middle part of the first connecting rod of the footrest mechanism.

Preferably, the telescopic push rod is an electric push rod. Of course, other driving methods may also be used.

The technical concept of the present invention is as follows: firstly, in the stage of extending the footrest mechanism and reclining the backrest, pressing the electric switch, the electric push rod stretches forward, thereby driving the driving member to move and simultaneously pushing the first connecting rod of the footrest mechanism, driving the member When the initial state of the pin on the first connecting rod coincides with each other, when the footrest mechanism stretches out, the backrest is driven by the linkage straight rod to realize the reclining action. Press the electric switch, the electric push rod retracts and drives the driving member to move, the footrest mechanism returns to the initial position under the action of its own gravity, the gravity of the human leg and the tension of the spring, and the pin on the first connecting rod of the footrest mechanism is here. During the process, it is close to the front end of the driving member, and the backrest rises back to the initial position. The electric push rod continues to shrink to drive the driving member, and the rear section of the driving member touches the pin on the lifting link 1, thereby driving the lifting link 4, lifting link 2, and lifting link 3 to move, and at the same time drives the seat plate to break away from the seat plate support 1 And seat board support two, upward movement realizes assisted standing.

The beneficial effects of the present invention are reflected in: it can realize functions such as footrest lifting, backrest reclining and seat plate lifting, simple and stable structure, convenient operation, low cost, high practicability, and provides great help for solving the problems of the elderly.

Description of drawings

Fig. 1 is the initial state diagram of the present invention.

Fig. 2 is a state diagram of the present invention in which the footrest mechanism and the backrest are linked to the highest position.

Fig. 3 is a side view of the present invention rising to the highest point.

Fig. 4 is a state diagram of seat plate lifting in the present invention

Fig. 5 is a schematic diagram of the lifting mechanism of the present invention.

Fig. 6 is a partial schematic view of the footrest mechanism of the present invention.

Among them, 1. Foot rest mechanism 2, spring 3, T-shaped seat plate 4, telescopic push rod 5, backrest 6, second seat plate support 7, first seat plate support 8, driving member 9, middle beam 10, seat frame 11. The first lifting link 12, the second lifting link 13, the third lifting link 14, the fourth lifting link 15, the linkage straight bar 16, the first link 17 of the footrest mechanism, and the lower end extension part 18 of the seat plate Footrest 19 L-shaped member.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings.

Referring to Figures 1 to 6, a linkage lift chair includes a left-right symmetrical footrest mechanism 1, a T-shaped seat plate 3, a seat plate lifting mechanism, a backrest mechanism, a seat frame 10, and a telescopic push rod 4, the seat frame 10 The upper space is followed by a footrest mechanism 1, a T-shaped seat plate 3 and a backrest mechanism from left to right. The T-shaped seat plate 3 includes a horizontal section and a vertical section. The footrest mechanism 1 and the T-shaped seat plate 3 The left end of the transverse section of the T-shaped seat plate 3 is connected to the lower end of the vertical section of the seat plate lifting mechanism, and the right end of the transverse section of the T-shaped seat plate 3 is connected to the backrest mechanism. A linkage straight rod 15 is connected with the footrest mechanism, the bottom of the telescopic push rod 4 is hinged on the horizontal axis on the seat frame 10, the front end of the telescopic push rod 4 is hinged with the middle crossbeam 9, and the left and right sides of the middle crossbeam 9 The two ends are fixedly connected to the middle part of the driving member 8 respectively, and the upper part of the front end of the driving member 8 is provided with a groove, and the groove is in contact with the upper pin of the first connecting rod on the footrest mechanism 1, and the driving member 8 The lower part of the front end is provided with a conflicting surface, which is matched with the lower pin on the first lifting link 11 on the seat plate lifting mechanism, and the middle part of the first link of the footrest mechanism 1 is in contact with the T-shaped seat plate 3 A spring 2 is provided between them, the middle part of the seat frame 10 is fixedly connected to the first seat support 7, the rear end of the seat frame 10 is fixed to the second seat support 6, and the middle part of the first seat support 7 It is hinged with the first lifting link 11, the upper part of the first seat plate support 7 is hinged with the rear end of the driving member 8, and the lifting mechanism is connected with the second seat plate support 6;

The hinge between the first connecting rod of the footrest mechanism 1 and the T-shaped seat plate 3 and the hinge between the upper part of the first seat plate support 7 and the rear end of the driving member 8 are located on the same axis Location.

Further, the footrest mechanism is composed of the first connecting rod 16, the second connecting rod 16.1, the third connecting rod 16.2, the fourth connecting rod 16.3, the fifth connecting rod 16.4, the sixth connecting rod 16.5 and the footrest plate 18. The middle part of the first connecting rod 16 is provided with the upper pin, the right end of the first connecting rod and the right end of the second connecting rod are hinged with the left end of the transverse section of the T-shaped seat plate, and the left end of the first connecting rod It is hinged with the right end of the third connecting rod, the middle part of the second connecting rod is hinged with the middle part of the third connecting rod, and the left end of the second connecting rod is hinged with the right end of the fourth connecting rod. The left end of the third connecting rod is hinged to the right end of the fifth connecting rod, the middle part of the fourth connecting rod is hinged to the middle part of the fifth connecting rod, and the left end of the fifth connecting rod is connected to the footrest The left end of the fourth link is hinged, and the left end of the fourth connecting rod is hinged with the right end of the footrest.

Still further, the lifting structure includes a first lifting link 11, a second lifting link 12, a third lifting link 13 and a fourth lifting link 14, one end of the first lifting link is connected to the first lifting link. The middle part of the seat plate support is hinged, the other end of the first lifting link is hinged with one end of the third lifting link, and one end of the second lifting link is connected with the vertical section of the T-shaped seat plate 3 The lower end of the second lifting link is hinged, the other end of the second lifting link is hinged to the middle of the second seat plate support 6, the other end of the third lifting link is hinged to the middle of the fourth lifting link, One end of the fourth lifting link is hinged to the upper part of the second seat plate support 6 , and the other end of the fourth lifting link is hinged to the middle of the vertical section of the T-shaped seat plate 3 .

Furthermore, the backrest mechanism includes a backrest 5 and an L-shaped member 19, the backrest 5 is fixed in the middle of the L-shaped member 19, and one end of the L-shaped member 19 is connected to the transverse section of the T-shaped seat plate 3. The right end is hinged, the other end of the L-shaped member 19 is hinged with one end of the linkage straight rod 15, and the other end of the linkage straight rod 15 is hinged with the middle part of the first connecting rod of the footrest mechanism 1 .

Preferably, the telescopic push rod 4 is an electric push rod. Of course, other driving methods may also be used.

The movement principle of the linkage lift chair of the present invention is as follows: First, the foot rest mechanism 1 stretches out and the backrest 5 reclines, and the electric switch is pressed, and the electric push rod stretches forward, thereby driving the driving member 8 to move and pushing the foot rest at the same time The first connecting rod 16 of the mechanism, the driving member 8 and the pins on the first connecting rod 16 coincide with each other in the initial state, and when the footrest mechanism 1 stretches out, the backrest 5 is driven by the linkage straight rod 15 to realize the reclining action. Press the electric switch, the electric push rod retracts and drives the driving member 8 to move, the footrest mechanism 1 returns to the initial position under the action of its own gravity, the gravity of the human leg and the pulling force of the spring 2, and the first connecting rod 16 of the footrest mechanism The pin is close to the front end surface of the driving member 8 in this process, and the backrest 5 is returned to the initial position. The electric push rod continues to shrink to drive the driving member 8, and the rear section of the driving member 8 touches the pin on the first lifting link 11, thereby driving the second lifting link 12, the third lifting link 13, and the fourth lifting link 14 to move At the same time, the seat plate 3 is driven to break away from the first seat plate support 7 and the second seat plate support 6, and moves upward to realize auxiliary standing.

The lift chair of this embodiment can be applied to chairs for the elderly, or other occasions.

The content described in the embodiments of this specification is only an enumeration of the implementation forms of the inventive concept. The protection scope of the present invention should not be regarded as limited to the specific forms stated in the embodiments. Equivalent technical means that a person can think of based on the concept of the present invention.

Claims (5)

1. an interlinking lifting chair, it is characterised in that: described chair lift includes symmetrical leg rest Mechanism, T-shaped seat board, seat board lifting mechanism, backrest, seat frame and flexible push rod, institute Stating seat frame upper space is leg rest mechanism, T-shaped seat board and backrest the most successively, institute State T-shaped seat board and include the traversing section of traversing section and vertical section, described leg rest mechanism and T-shaped seat board Left end connect, the bottom of the vertical section of described T-shaped seat board is connected with seat board lifting mechanism, The right-hand member of the traversing section of described T-shaped seat board and backrest connect, and described backrest is by connection Dynamic straight-bar and leg rest mechanism connect, and are hinged on the transverse axis in described seat frame bottom described flexible push rod On, described flexible push rod front end is hinged with intermediate transverse girder, and two ends, described intermediate transverse girder left and right are respectively Fixing with the middle part of drive member and be connected, described drive member upper front end is provided with groove, described Groove is conflicted on the upper pin of the first connecting rod of leg rest mechanism, described drive member front lower portion It is provided with resistance surface, described resistance surface and the downside pin on the first lifting connecting rod on seat board lifting mechanism Axle coordinates, and is provided with spring even between middle part and the T-shaped seat board of the first connecting rod of described leg rest mechanism Connecing, affixed first seat board in middle part of described seat frame supports, and the rear end of described seat frame fixes second Plate supports, middle part and the described first lifting rod hinge connection that described first seat board supports, and described the The top that one seat board supports is hinged with the rear end of described drive member, and described lifting mechanism is with described Second seat board supports and connects；Hinged place between described leg rest mechanism first connecting rod and T-shaped seat board And described first seat board support top and the rear end of described drive member between hinged place be positioned at Same shaft core position.

2. interlinking lifting chair as claimed in claim 1, it is characterised in that: described leg rest mechanism By first connecting rod, second connecting rod, third connecting rod, fourth link, the 5th connecting rod, six-bar linkage And footrest, in the middle part of first connecting rod, it is provided with described upper pin, the right-hand member of described first connecting rod, The right-hand member of second connecting rod is all hinged with the left end of the traversing section of T-shaped seat board, described first connecting rod Left end is hinged with the right-hand member of described third connecting rod, and the middle part of described second connecting rod is with the described 3rd even The middle part of bar is hinged, and the left end of described second connecting rod is hinged with the right-hand member of described fourth link, institute The left end stating third connecting rod is hinged with the right-hand member of described 5th connecting rod, the middle part of described fourth link Hinged with the middle part of described 5th connecting rod, the left end of described 5th connecting rod and a left side for described footrest Holding hinged, the left end of described fourth link is hinged with the right-hand member of described footrest.

3. interlinking lifting chair as claimed in claim 1 or 2, it is characterised in that: described lifting is tied Structure includes the first lifting connecting rod, the second lifting connecting rod, the 3rd lifting connecting rod and the 4th lifting connecting rod, The middle part that one end of described first lifting connecting rod supports with described first seat board is hinged, and described first The other end of lifting connecting rod is hinged with one end of described 3rd lifting connecting rod, and described second lifting is even One end of bar is hinged with the bottom of the vertical section of described T-shaped seat board, described second lifting connecting rod The other end hinged with the middle part that described second seat board supports, another of described 3rd lifting connecting rod Holding hinged with the middle part of described 4th lifting connecting rod, one end of described 4th lifting connecting rod is with described The upper articulation that second seat board supports, the other end of described 4th lifting connecting rod and described T-shaped seat The middle part of the vertical section of plate is hinged.

4. interlinking lifting chair as claimed in claim 1 or 2, it is characterised in that: described backrest Mechanism includes that backrest and l-shaped member, described backrest are fixed on the middle part of described l-shaped member, institute The one end stating l-shaped member is hinged with the right-hand member of the traversing section of T-shaped seat board, described l-shaped member The other end is hinged with one end of described linkage straight-bar, and the other end of described linkage straight-bar is put with described The middle part of foot mechanism first connecting rod is hinged.

5. interlinking lifting chair as claimed in claim 1 or 2, it is characterised in that: described stretching pushes away Bar is electric pushrod.