WO2023051024A1

WO2023051024A1 - Seat with electric lifting function

Info

Publication number: WO2023051024A1
Application number: PCT/CN2022/110277
Authority: WO
Inventors: 肖建国
Original assignee: 广东佳居家具有限公司
Priority date: 2021-09-29
Filing date: 2022-08-04
Publication date: 2023-04-06
Also published as: CN216364375U

Abstract

A seat with an electric lifting function, the seat comprising a seat body (1), a base (2), and an electric lifting mechanism (3). The electric lifting mechanism (3) is connected between the seat body (1) and the base (2), and the electric lifting mechanism (3) comprises: a mounting seat (31), which is arranged on the base (2); two four-bar linkage mechanisms (32), which are arranged opposite each other and are connected between the mounting seat (31) and the seat body (1); a power rod (33), which is connected between the two four-bar linkage mechanisms (32); and a driving device (34), wherein two ends of the driving device (34) are respectively hinged to the mounting seat (31) and the power rod (33), such that the driving device (34) drives the two four-bar linkage mechanisms (32) to swing by means of the power rod (33) so as to drive the seat body (1) to lift between a low position and a high position, and the driving device (34) is located in an accommodating space, which is defined by the mounting seat (31), the two four-bar linkage mechanisms (32) and the power rod (33). In the seat, the electric lifting mechanism (3) is used to lift the seat body (1), so as to facilitate sitting height adjustment by a user and improve the user experience; and the electric lifting mechanism (3) has a simple and compact structure, such that the amount of space occupied is small.

Description

Seat with electric lifting function

technical field

The present application relates to the technical field of seats, in particular to a seat with an electric lifting function.

Background technique

With the continuous development of social economy, people have higher and higher requirements for the quality of life, and more and more pursuits for the comfort of seats. However, ordinary functional seats do not have a seat cushion lifting function, and for users of different heights, they cannot be well matched to a suitable sitting height. Users with relatively long legs, if there is no seat with height adjustment, will bend their legs when sitting on the seat, and at the same time oppress the stomach, so that the user cannot achieve the effect of relaxing and comfortable sitting.

Although there are some seats with lifting function on the market, they all use gas springs to adjust the sitting height. Since the strength of the gas spring is not strong enough, the user's weight cannot be jacked up. When the user needs to adjust the sitting height, the user needs to stand up a little and reduce the weight of the entire seat to open the gas spring to adjust the seat height. Moreover, it is difficult to get a suitable sitting height during the adjustment process, which makes The user cannot get a comfortable leisure experience.

Contents of the invention

In order to overcome at least one of the defects described in the above-mentioned prior art, the present application provides a seat with an electric lifting function, which uses an electric lifting mechanism to realize the lifting of the seat body, which is convenient for the user to adjust the sitting height and improves the user experience, and The electric lifting mechanism has a simple and compact structure and takes up little space.

The technical scheme that the application adopts for solving its problem is:

A seat with electric lifting function, comprising a seat main body, a base and an electric lifting mechanism, the electric lifting mechanism is connected between the seat main body and the base, wherein,

The electric lifting mechanism includes a mounting seat arranged on the base, two sets of four-bar linkages arranged oppositely and connected between the mounting base and the seat body, and two sets of four-bar linkages connected between the two sets of four-bar linkages. The two ends of the driving device are respectively hinged to the mounting base and the power rod, so that the driving device drives two sets of four-bar linkages to swing through the power rod to drive the seat body to move between the low position and the power rod. The high positions are raised and lowered, and the driving device is located in the accommodation space formed by the mounting base, two sets of four-bar linkages and the power rod.

Further, the power rod is provided with a first connecting ear extending upward, and the upper end of the first connecting ear is bent toward the side of the accommodation space to form a bending portion, and the driving device is hinged to the The bending part.

Furthermore, a second connecting ear is provided on the side of the installation seat facing the power rod, and the driving device is hinged to the second connecting ear, so as to further rationally utilize the accommodation space.

Further, the angle between the seat surface when the seat body is in the low position and the seat surface when the seat body is in the high position is less than 3 degrees.

Further, the four-bar linkage mechanism includes a fixed rod, a first swing rod, a second swing rod and a seat cushion connecting seat, the fixed rod is fixed on the mounting seat, and the seat cushion connecting seat is fixed on the The seat main body, the two ends of the first swing link and the second swing link are respectively hinged to the fixing bar and the seat cushion connecting seat.

Further, the second swing link is located above the first swing link, and the distance between the two hinge points of the second swing link is greater than the distance between the two hinge points of the first swing link.

Further, the second swing link is located above the first swing link, and the two ends of the power link are respectively connected to the two first swing links.

Further, the four-bar linkage mechanism also includes a limit post, and the limit post is fixed on any one of the fixed bar, the first swing bar, the second swing bar, and the seat cushion connecting seat and is connected with the corresponding The other adjacent link members abut to define the lower position of the seat body.

Further, the seat cushion connecting seat includes a first connecting plate, a second connecting plate, a third connecting plate and a fourth connecting plate which are sequentially integrally bent and formed, wherein the first connecting plate is used to hinge the first swing rod and the second swing rod, the fourth connecting plate is used to connect the seat main body, the first connecting plate, the second connecting plate and the third connecting plate are arranged vertically, the fourth connecting plate is arranged horizontally, The inner side of the bend between the second connecting plate and the third connecting plate is connected with the first reinforcing plate, and the inner side of the bending between the third connecting plate and the fourth connecting plate is connected with the second reinforcing plate.

Further, the middle part of the mounting base is rotatably connected to the base.

In summary, the seat provided by the present application has the following technical effects:

1) Use the electric lifting mechanism to realize the lifting of the main body of the seat, which is convenient for the user to adjust the sitting height, improves the user experience, and has a comfortable sitting feeling;

2) The electric lifting mechanism occupies a small space. When it is assembled to the seat, it occupies less area at the bottom of the seat body, so that there is a large free space on both sides of the bottom of the seat body, which further improves the user experience and the overall quality of the seat. beauty;

3) The overall structure of the electric lifting mechanism is simple and compact, has a strong bearing capacity, and its lifting action is stable.

Description of drawings

Fig. 1 is the structural representation of the seat shown in the embodiment of the present application;

Fig. 2 is the explosion schematic diagram of the seat shown in the embodiment of the present application;

Fig. 3 is the schematic diagram of the three-dimensional structure of the electric lifting mechanism shown in the embodiment of the present application;

Fig. 4 is a side view structural schematic diagram of the electric lifting mechanism shown in the embodiment of the present application;

Fig. 5 is a cross-sectional view of the electric lifting mechanism when the seat body is in a low position shown in the embodiment of the present application;

Fig. 6 is a cross-sectional view of the electric lifting mechanism when the seat body is in a high position shown in the embodiment of the present application;

Fig. 7 is a schematic structural view of the cushion connecting seat shown in the embodiment of the present application;

Fig. 8 is a schematic diagram of the connection between the power rod and the first connecting ear shown in the embodiment of the present application.

Among them, the reference signs have the following meanings:

1. Seat body; 11. Seat frame assembly; 12. Backrest assembly; 13. Backrest motor; 14. Foot pedal assembly; 15. Foot motor; 2. Base; Lifting mechanism; 31, mounting seat; 311, rotating shaft sleeve; 32, four-bar linkage mechanism; 321, fixed rod; 322, the first swing rod; 323, the second swing rod; 324, seat cushion connecting seat; 3241, the first Connecting plate; 3242, second connecting plate; 3243, third connecting plate; 3244, fourth connecting plate; 3245, first reinforcing plate; 3246, second reinforcing plate; 325, limit column; 33, power rod; 34 . Driving device; 35. First connecting ear; 351. Bending part; 352. Pin hole; 36. Second connecting ear.

Detailed ways

For better understanding and implementation, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

In the description of this application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying the device or positional relationship indicated. Elements must have certain orientations, be constructed and operate in certain orientations, and thus should not be construed as limiting the application.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the description of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.

Referring to Fig. 1 to Fig. 8, the present application discloses a seat with electric lifting function, the seat includes a seat main body 1, a base 2 and an electric lifting mechanism 3, and the electric lifting mechanism 3 is connected to the seat main body 1 and the base 2, the electric lifting mechanism 3 is used to realize the lifting of the seat main body 1, which is convenient for the user to adjust the sitting height and improves the user experience.

In this embodiment, the electric lifting mechanism 3 includes a mounting seat 31 provided on the base 2, two sets of four-bar linkage mechanisms 32 arranged oppositely and connected between the mounting seat 31 and the seat main body 1, and two sets of four-link mechanisms 32 connected to each other. The power rod 33 and the driving device 34 between the rod mechanism 32, the two ends of the driving device 34 are respectively hinged on the mounting base 31 and the power rod 33, so that the driving device 34 drives two groups of four-bar linkage mechanisms 32 to swing through the power rod 33 to Drive the seat main body 1 to lift between the low position and the high position. Wherein, the driving device 34 can be a power source such as an electric push rod, a linear motor, etc. The lifting action of the seat is specifically shown as: when the driving device 34 is extended, the driving device 34 pushes the power rod 33 to move, and the power rod 33 drives the four-link The mechanism 32 swings upwards, and the four-bar linkage mechanism 32 drives the seat main body 1 to lift upwards.

Preferably, the driving device 34 is located in the accommodation space formed by the mounting base 31 , two sets of four-bar linkage mechanisms 32 and the power rod 33 . Through the above scheme, the internal space of the electric lifting mechanism 3 can be rationally used to accommodate the drive device 3, the overall volume of the electric lifting mechanism 3 can be reduced, and the bottom area of the seat body 1 occupied by the electric lifting mechanism 3 can be reduced, so that the seat body 1, there are large free spaces on both sides of the bottom, which further improves the user experience and the overall aesthetics of the seat.

In this embodiment, the middle part of the mounting seat 31 is rotatably connected to the base 2, so that the entire seat can be freely rotated by 360°. Specifically, the base 2 includes a five-star base 21 and a rotating shaft 22, a rotating shaft sleeve 311 is fixedly connected to the middle of the mounting seat 31, and the two ends of the rotating shaft 22 are respectively inserted on the five-star base 21 and the rotating shaft sleeve 311, thus, using the rotating shaft 22 to Realize 360° free rotation of the seat.

In addition, in order to facilitate the understanding of the overall technical solution and technical effect of the present application, this embodiment will specifically provide a structure of a seat body 1 for illustration. The seat body 1 specifically includes a seat frame assembly 11, a backrest assembly 12 and a foot Step assembly 14; Wherein, backrest assembly 12 is hinged on the rear end of seat frame assembly 11, and drives backrest assembly 12 to tilt back and forth relative to seat frame assembly 11 through backrest motor 13; Footrest assembly 14 is hinged on the front end of seat frame assembly 11, And through the pedal motor 15, the pedal assembly 14 is turned over and expanded or contracted relative to the frame assembly 11;

Referring to Fig. 3, Fig. 4 and Fig. 8, in order to make further reasonable use of the internal space of the electric lifting mechanism 3, preferably, the power rod 33 is provided with a first connecting ear 35 extending upward, and the mounting seat 31 faces toward the side of the power rod 33. One side is provided with a second connecting ear 36; wherein, the upper end of the first connecting ear 35 is bent toward one side of the receiving space to form a bending portion 351, and one end of the driving device 34 is hinged to the bending portion 351, and the driving device 34 The other end is hinged to the second connecting ear 36. Specifically, there are two first connecting ears 35, and the two first connecting ears 35 are arranged at intervals. The end of the bending portion 351 of each first connecting ear 35 is provided with a pin hole 352, and the pin shaft passes through the two pins. The hole 352 is used to hinge the output end of the driving device 34 between the two bending parts 351 ; the fixed end of the driving device 34 is also hinged to the second connecting ear 36 through the pin hole.

Through the first connecting ear 35 provided on the power rod 33, the relative distance between the hinge points at both ends of the driving device 34 can be increased by using the first connecting ear 35 without enlarging the overall size of the electric lifting mechanism 3 , and can avoid interference between the driving device 34 and the power rod 33 during the movement; The pedal motor 15 is conducive to the compact assembly of the overall structure of the seat.

In this embodiment, preferably, the angle between the seat surface when the seat body 1 is in the low position and the seat surface when the seat body 1 is in the high position is less than 3 degrees; it can be understood that the seat frame assembly in the low position The included angle between 11 and the horizontal plane is θ`, and the included angle between the seat frame assembly 11 and the horizontal plane is θ`` in high position, and the relationship between the two included angles is: -3°<θ`-θ``<3°. As a result, when the user adjusts the seat up and down in the sitting state, because the inclination angle of the seat surface of the seat body 1 changes little or remains basically unchanged, the user does not feel the inclination angle, which ensures the comfort of the user's sitting feeling.

It can be understood that the degree of variation of the inclination angle of the seat surface of the seat main body 1 is determined by the characteristics of the four-bar linkage mechanism 32, therefore, preferably, the four-bar linkage mechanism 32 is a parallel four-bar linkage mechanism to ensure that The inclination angle of the seat surface of the seat main body 1 remains unchanged, that is, θ` and θ`` remain equal during the entire lifting process.

It is true that based on the consideration of the space utilization rate among the various parts of the seat, the interference between the parts, the lifting height, the force and other parameters, the four-bar linkage mechanism 32 can also be fine-tuned to form the structural style of the non-parallel four-bar linkage mechanism, It is sufficient to satisfy the above-mentioned angle relationship of -3°<θ`-θ``<3°.

Referring to FIGS. 1 , 3 and 4 , in this embodiment, the four-bar linkage mechanism 32 specifically includes a fixed rod 321 , a first swing rod 322 , a second swing rod 323 , a seat cushion connection seat 324 and a limit post 325 . Wherein, the fixed rod 321 is affixed to the mounting base 31, specifically, the fixing rods 321 of the two sets of four-bar linkage mechanisms 32 are respectively welded on both sides of the mounting base 31; the seat cushion connection base 324 is affixed to the seat main body 1, Specifically, the seat cushion connecting bases 324 of the two groups of four-bar linkage mechanisms 32 are respectively screwed under the two sides of the seat frame assembly 11; The pad connection seat 324 , specifically, the second swing link 323 is located above the first swing link 322 .

When the four-bar linkage mechanism 32 is a parallel four-bar linkage mechanism, the distance between the two hinge points of the second swing link 323 is equal to the distance between the two hinge points of the first swing link 322, and the two hinge points of the fixed rod 321 The distance between them is equal to the distance between the two hinge points of the seat cushion connecting seat 324.

When the four-bar linkage mechanism 32 is a non-parallel four-bar linkage mechanism, preferably, the distance between the two hinge points of the second swing link 323 is greater than the distance between the two hinge points of the first swing link 322, so It is provided that, under load-bearing conditions, the second swing link 323 can better provide tension to disperse the stress suffered by the first swing link 322 and enhance the overall bearing capacity of the four-link mechanism 32 .

In addition, the limit post 325 is fixed on any one of the fixed rod 321, the first swing rod 322, the second swing rod 323 and the seat cushion connecting seat 324 and abuts against other adjacent connecting rods to define a seat. The low position of the chair main body 1 prevents the seat main body 1 from falling and collapsing when the driving device 3 breaks down. Specifically, taking the orientation of FIG. 4 as a reference, there are two limiting posts 325, one of which is fixed on the first swing rod 322 and is located at the hinge between the seat cushion connecting seat 324 and the first swing rod 322. the right side of the point, and is used to abut against or disengage from the seat cushion connecting seat 324; the other limit post 325 is fixed on the fixed rod 321 and is located on the left side of the hinge point between the first swing rod 322 and the fixed rod 321, and is used for Abut against or disengage from the first swing rod 322 . When the electric lifting mechanism 3 drives the seat main body 1 to drop to a low position, the two limit posts 325 abut against the seat cushion connection seat 324 and the first swing bar 322 respectively. Due to the relationship between the two limit posts 325, the effect on the The moment of force on the first swing rod 322 is reduced, and the first swing rod 322 is not easily deformed and bent.

Admittedly, the above-mentioned implementation of the two limiting columns 325 is the preferred solution of the present application, and other implementations of the limiting columns 325 are not intended to be excluded, as long as they can realize the function of limiting the lower position of the seat body 1 .

In this embodiment, the power rod 33 is connected between the two first swing rods 322 by welding or screwing, so that when the driving device 34 pushes the power rod 33 to drive the four-bar linkage mechanism 32 to swing upwards, the driving device A small stroke of 34 can cause a large swing of the four-bar linkage mechanism 32, so that the lifting stroke of the seat main body 1 is larger.

In addition, in other preferred embodiments, the power rod 33 can also be connected between two second swing rods 323 or between two seat cushion connecting seats 324 .

Referring to FIG. 7 , in this embodiment, the cushion connecting seat 324 includes a first connecting plate 3241 , a second connecting plate 3242 , a third connecting plate 3243 and a fourth connecting plate 3244 which are sequentially integrally bent and formed, wherein the first The connecting plate 3241 is used to hinge the first swing bar 322 and the second swing bar 323, the fourth connecting plate 3244 is used to connect the seat main body 1, and the first connecting plate 3241, the second connecting plate 3242 and the third connecting plate 3243 are all in the form of Arranged vertically, the fourth connecting plate 3244 is arranged horizontally, the inner side of the bend between the second connecting plate 3242 and the third connecting plate 3243 is connected with the first reinforcing plate 3245, between the third connecting plate 3243 and the fourth connecting plate 3244 A second reinforcing plate 3246 is connected to the inner side of the bend. Therefore, the overall strength of the seat cushion connection seat 324 can be greatly enhanced by multiple times of bending and combining the reinforcing plate, and its bearing capacity and structural stability can be improved, and the material is less and the weight is light.

In summary, the seat with lifting function provided by this application uses the electric lifting mechanism 3 to realize the lifting of the seat main body 1, which is convenient for the user to adjust the sitting height, improves the user experience, and has a comfortable sitting feeling; the electric lifting mechanism 3 The mechanism 3 occupies a small space. When it is assembled to the seat, it occupies less area at the bottom of the seat body 1, so that there is a large free space on both sides of the bottom of the seat body 1, further improving the user experience and the overall aesthetic feeling of the seat. ; The overall structure of the electric lifting mechanism 3 is simple, compact, and has a strong carrying capacity, and its lifting action stability is good.

The technical means disclosed in the solutions of this application are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principles of the present application, and these improvements and modifications are also regarded as the protection scope of the present application.

Claims

A seat with an electric lift function, characterized in that the seat comprises:

Seat main body, base and electric lifting mechanism, the electric lifting mechanism is connected between the seat main body and the base, wherein,

The electric lifting mechanism includes a mounting seat arranged on the base, two sets of four-bar linkages arranged oppositely and connected between the mounting base and the seat body, and two sets of four-bar linkages connected between the two sets of four-bar linkages. The two ends of the driving device are respectively hinged to the mounting base and the power rod, so that the driving device drives two sets of four-bar linkages to swing through the power rod to drive the seat body to move between the low position and the power rod. The high positions are raised and lowered, and the driving device is located in the accommodation space formed by the mounting base, two sets of four-bar linkages and the power rod.
The seat with electric lifting function according to claim 1, wherein the power rod is provided with a first connecting ear extending upward, and the upper end of the first connecting ear faces toward the receiving space. The side is bent to form a bent portion, and the driving device is hinged to the bent portion.
The seat with electric lifting function according to claim 2, wherein a second connecting ear is provided on the side of the mounting base facing the power rod, and the driving device is hinged to the second connecting ear .
The seat with electric lifting function according to claim 1, wherein the angle between the seat surface when the seat body is in the low position and the seat surface when the seat body is in the high position is less than 3 degrees.
The seat with electric lifting function according to claim 4, wherein the four-bar linkage mechanism includes a fixed rod, a first swing rod, a second swing rod and a seat cushion connecting seat, and the fixed rod is fixedly connected to On the mounting seat, the seat cushion connecting seat is fixedly connected to the seat main body, and the two ends of the first swing rod and the second swing rod are respectively hinged to the fixing rod and the seat cushion connecting seat.
The seat with electric lifting function according to claim 5, wherein the second swing link is located above the first swing link, and the distance between the two hinge points of the second swing link is greater than the specified Describe the distance between the two hinge points of the first fork.
The seat with electric lifting function according to claim 5, wherein the second swing link is located above the first swing link, and the two ends of the power link are respectively connected to the two first swing links superior.
The seat with electric lifting function according to claim 5, characterized in that, the four-bar linkage mechanism further comprises a limit column, and the limit column is fixed to the fixed rod, the first swing rod, the second Any one of the swing rod and the seat cushion is connected to the seat and abuts against other adjacent link members to define the low position of the seat body.
The seat with electric lifting function according to claim 5, characterized in that, the seat cushion connecting seat comprises a first connecting plate, a second connecting plate, a third connecting plate and a fourth connecting plate which are sequentially integrally bent and formed. plate, wherein the first connecting plate is used to hinge the first swing link and the second swing link, the fourth connecting plate is used to connect the seat main body, the first connecting plate, the second connecting plate and the third connecting plate The connecting plates are arranged vertically, the fourth connecting plate is arranged horizontally, the inner side of the bend between the second connecting plate and the third connecting plate is connected with the first reinforcing plate, and the bending inner side between the third connecting plate and the fourth connecting plate The inner side of the bend is connected with a second reinforcing plate.
The seat with electric lifting function according to claim 1, characterized in that, the middle part of the mounting seat is rotatably connected to the base.