CN215382615U

CN215382615U - Furniture lifting structure and furniture

Info

Publication number: CN215382615U
Application number: CN202121681566.7U
Authority: CN
Inventors: 王大秋; 周骏
Original assignee: Zhejiang Motostuhl Furniture Technology Co ltd
Current assignee: Zhejiang Motostuhl Furniture Technology Co ltd
Priority date: 2020-07-26
Filing date: 2021-07-22
Publication date: 2022-01-04
Anticipated expiration: 2031-07-22
Also published as: CN113729427A; CN215382614U

Abstract

The utility model discloses a furniture lifting structure and furniture, comprising a fixed component, a movable component, a first support arm and a second support arm, wherein the first support arm and the second support arm are connected between the fixed component and the movable component; one end of the first support arm is hinged with the movable component at a first hinge point, and the other end of the first support arm is hinged with the fixed component at a second hinge point; one end of the second support arm is hinged with the fixed component at the third hinge joint point, and the other end of the second support arm is hinged with the movable component at the fourth hinge joint point; a parallelogram four-bar linkage mechanism is formed among the first hinge point, the second hinge point, the third hinge point and the fourth hinge point; the movable component can be lifted relative to the fixed component through the deformation of the four-bar linkage; one of the fixed component or the movable component is provided with an adjusting mechanism, the adjusting mechanism comprises a control unit which can drive the four-bar linkage mechanism to deform, and the four-bar linkage mechanism deforms in response to the movement of the control unit so as to realize the lifting of the movable component; the lifting structure is suitable for most furniture needing lifting.

Description

Furniture lifting structure and furniture

Technical Field

The utility model relates to the field of furniture, in particular to a furniture lifting structure and furniture.

Background

In order to meet different use habits, some furniture is provided with a lifting function, such as a lifting table, and the screw rod and nut mechanism is driven by a motor to lift the table legs in advance; for example, some mechanical lifting tables or height-adjustable seats are positioned and adjusted in advance by inserting bolts into positioning holes at different positions; for example, a pneumatically-adjusted seat is adopted, namely, an air rod is arranged below the seat to realize lifting adjustment, but in any form, the lifting adjustment is uniform, and the consumer has aesthetic fatigue.

Furthermore, the electric lifting table which is used as power needs electric power as driving, so that the use limitation exists; the lifting structure of a mechanical splicing locking structure is adopted, so that the operation is inconvenient; in addition, the seat using the air rod as the lifting component needs to consider the problem of air tightness and needs great time and labor in terms of safety, such as installing an explosion-proof chassis, etc., and for children, much attention needs to be paid to safety, and higher requirements are provided for product quality.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a lifting mechanism of furniture with a novel structure, which adopts the structural principle of parallelogram deformation to realize the lifting of a movable component relative to a lifting component; the first support arm and the second support arm are respectively hinged with the fixed member and the movable member to form a parallelogram, so that the fixed member is simple in lifting mode and stable in structure, the control unit directly acts on the four-bar linkage mechanism to deform, and the operation is labor-saving; in addition, the first support arm and the second support arm are overlapped, so that the structure is simplified, and the appearance is simplified and attractive.

The furniture is provided with the lifting mechanism, and can be a lifting table, a seat and other furniture needing lifting; by adopting the mechanical lifting mode, the potential safety hazard can be eliminated; and the chair seat is lifted by adopting a parallelogram deformation mode, so that the chair seat structurally makes people have a new appearance and attracts the eyes.

The technical scheme of the utility model is realized as follows:

a furniture lifting structure comprises a fixed component, a movable component, a first support arm and a second support arm, wherein the first support arm and the second support arm are connected between the fixed component and the movable component; the first support arm and the second support arm are partially overlapped, one end of the first support arm is hinged with the movable component at a first hinge point, and the other end of the first support arm is hinged with the fixed component at a second hinge point; one end of the second support arm is hinged with the fixed component at the third hinge joint point, and the other end of the second support arm is hinged with the movable component at the fourth hinge joint point; a parallelogram four-bar linkage mechanism is formed among the first hinge point, the second hinge point, the third hinge point and the fourth hinge point; the movable component can be lifted relative to the fixed component through the deformation of the four-bar linkage; one of the fixed component or the movable component is provided with an adjusting mechanism, the adjusting mechanism comprises a control unit which can drive the four-bar linkage mechanism to deform, and the four-bar linkage mechanism deforms in response to the movement of the control unit so as to realize the lifting adjustment of the movable component.

Preferably, the first support arm is positioned obliquely above the second support arm; the first hinge point is higher than the fourth hinge point, and the second hinge point is higher than the third hinge point.

Preferably, in the vertical direction, the first hinge point is higher than the fourth hinge point by 3-16cm, and the distance that the second hinge point is higher than the third hinge point is the same as the distance that the first hinge point is higher than the fourth hinge point. The first hinge point is higher than the fourth hinge point by a short distance, so that the upper support arm and the lower support arm are closer to each other, and a part of the upper support arm and the lower support arm are overlapped together, so that the lifting of the movable component is realized by only one support arm when seen from a distance, and the lifting structure has mysterious feeling; as a structure of the children chair, the children chair can attract observation and search.

Preferably, the second hinge point is located right above the third hinge point, and the first hinge point is located right above the fourth hinge point. Thereby enabling the movable member to be lifted and lowered within a wide range through the deformation of the four-bar linkage mechanism.

Preferably, during the lifting process of the movable component, the included angle between the connecting line between the first hinge point and the second hinge point and the vertical line is between 60 and 95 degrees.

Preferably, a first pin shaft penetrates between the first support arm and the movable component, and a first hinge point is formed at the position of the axis of the first pin shaft; and a second pin shaft penetrates between the first support arm and the fixed component, a second hinge point is formed at the position of the axis of the second pin shaft, and the first pin shaft and the second pin shaft are arranged in parallel. The first pin shaft and the second pin shaft are long shafts, so that the first support arm is more stably hinged with the movable component and the fixed component, and the bearing of the chair seat is better.

Preferably, a third pin shaft penetrates between the second support arm and the fixed component, and a third hinge joint point is formed at the position of the axis of the third pin shaft; and a fourth pin shaft penetrates between the second support arm and the fixed component, a fourth hinge point is formed at the position of the axis of the fourth pin shaft, and the third pin shaft and the fourth pin shaft are arranged in parallel. The third pin shaft and the fourth pin shaft are long shafts, so that the second support arm is more stably hinged with the movable component and the fixed component, and the bearing of the chair seat is better.

Preferably, the control unit is a control pin, the adjusting mechanism is arranged in the movable component, and the adjusting mechanism further comprises a screw rod and nut mechanism, a control handle capable of driving the control pin to move, and a gear steering group arranged between the screw rod and nut mechanism and the control handle; the movable component is provided with a track groove which can guide the motion trail of the control pin, and the control pin penetrates through the track groove and is connected with one of the upper support arm or the lower support arm; the screw rod and nut mechanism comprises a nut which is relatively and fixedly connected with the control pin and a screw rod which is in threaded fit with the nut; the screw rod and nut mechanism responds to the rotation of the control handle and drives the control pin to drag the upper support arm or the lower support arm to rotate so as to deform the four-bar mechanism. And then the four-bar mechanism can be driven to deform by rotating the control handle, so that the operation is convenient.

Preferably, the gear steering set has an input end and an output end, the screw rod is connected to the output end of the gear steering set, and the screw rod is arranged in the fixing member along the front-back direction; the control handle is connected to the input end of the gear steering group from the outer side of the fixed member; the rotation of the rotation control handle can drive the screw rod to rotate along the circumferential direction. Through the gear steering group, the rotation control handle can order about the lead screw self to rotate, then makes the screw remove, and the structure is ingenious, and the handle turns to the group from the movable member outside and gear and is connected, and it is more convenient to make control and adjust.

The furniture is a lifting table and comprises a lifting structure of the furniture, a fixed component is connected with table legs, and a movable component is connected with a table board.

The furniture is a chair, the chair comprises a chair seat, chair legs and the lifting structure of the furniture, the fixed component is installed with the chair legs, and the movable component is installed with the chair seat.

Preferably, the chair leg is a fixed chair leg standing on the ground or a movable chair leg with a caster.

The design starting point, the idea and the beneficial effects of the utility model adopting the technical scheme are as follows:

1. the lifting structure of the furniture adopts the parallelogram four-bar linkage mechanism to realize the lifting of the furniture parts, and compared with the air rod lifting structure of common furniture, the lifting structure of the furniture has the advantages that the structure makes the eyes of people new and can attract the eyes of users; the mechanical lifting mode is adopted, so that the structural strength is ensured, meanwhile, potential safety hazards do not exist, the safety is better, and the children can use the lifting device more safely; the operation is also very labor-saving and easy.

2. Although the first support arm and the second support arm form a parallelogram four-bar linkage mechanism, the first support arm and the second support arm are closer to each other, and an overlapping part is arranged between the first support arm and the second support arm; so that only one arm connects the movable member and the fixed member when viewed from a distance; the whole body is tidier and more beautiful; and the structure is novel, and when the furniture is used as the structure of the children chair, the children can be attracted to observe and explore.

3. The control handle is rotated to drive the four-bar mechanism, so that the height of the chair seat is adjusted; in the traditional air rod lifting structure, when the height is adjusted, only the control handle is moved to control the air rod to lift; the long-term use process is slightly dull; the lifting structure of the chair controls the lifting and descending of the chair seat by rotating the control handle by hands, so that the chair has more interest in use; is particularly suitable for children seats and improves the practical ability of children.

4. Furthermore, when the height of the seat is adjusted by a human body, the traditional air rod lifting structure is not easy to accurately control the lifting height of the seat, and the seat is often too high or too low under the action of the air rod, so that a satisfactory height can be obtained only by continuous adjustment of a person; the lifting structure of the furniture controls the rotating angles of the first support arm and the second support arm by rotating the control handle, so that the lifting or descending of the seat or the table plate can be adjusted, the stepless adjustment can be realized, and the height of the seat can be more accurately adjusted.

Drawings

FIG. 1 is a schematic perspective view of an elevating structure according to an embodiment of the present invention;

FIG. 2 is an exploded view of the lifting structure of an embodiment of the present invention;

FIG. 3 is a perspective view of an embodiment of an adjustment mechanism of the present invention;

FIG. 4 is a perspective view of the lifting structure of the present invention with the movable member at the lowest height;

FIG. 5 is a cross-sectional view of a lower elevation of a movable member of the lift structure according to a further embodiment of the present invention;

FIG. 6 is a schematic perspective view of the lifting structure of the present invention with the movable member having the highest height;

FIG. 7 is a perspective view of an embodiment of the present invention for adjusting the height change of a movable member;

FIG. 8 is a graph illustrating the effect of the movement of the four-bar linkage mechanism in the embodiment of the present invention;

FIG. 9 is a perspective view of a movable member in an embodiment of the present invention;

FIG. 10 is a schematic perspective view of an embodiment of the present invention in which the adjustment mechanism is mounted in a movable member;

FIG. 11 is a perspective view of the lowest seat height embodiment of the present invention;

FIG. 12 is a perspective view of the present invention showing the highest height of the seat.

The figures are numbered: a movable member 1; a fixing member 2; a chair seat A; a chair leg B; a first arm 3; a second support arm 4; a first pin 5; a second pin 6; an upper support plate 7; a lower support plate 8; a third pin 9; a fourth pin shaft 10; a first hinge point a; a second hinge point b; a third hinge point c; a fourth hinge point d; a four-bar linkage 11; an adjusting mechanism 12; a gear steering group 13; a screw rod 14; a latch 14 a; a first transmission tooth 15; a card slot 15 a; a second gear 16; a third gear 17; a drive shaft 18; a control handle 19; a mounting groove 20; a control pin 21; a rail groove 22; a mounting plate 23; an input terminal 24; an output 25; a nut 26.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more than one unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific embodiment of the utility model is as follows:

as shown in fig. 1-12, the present invention provides a furniture lifting structure that is particularly suitable for use in children's chairs, but may also be used for lifting tables; when used for a child seat, the child seat comprises a movable component 1 for connecting a seat A, and a mounting plate 23 for mounting the seat A is arranged on the movable component 1; a fixing member 2 for connecting the chair leg B; and a first arm 3 and a second arm 4 connected between the movable member 1 and the fixed member 2; two ends of the first support arm 3 are respectively hinged with the movable member 1 and the fixed member 2, and two ends of the second support arm 4 are also hinged with the movable member 1 and the fixed member 2; so that a four-bar linkage 11 is formed among the movable member 1, the fixed member 2, the first support arm 3 and the second support arm 4; when the chair is in use, the fixed component 2 is connected to the chair legs B and keeps relatively fixed, and the upper and the

second support arms

3 and 4 swing upwards or downwards around the fixed component 2 so as to enable the movable component 1 to ascend or descend, thereby being capable of adjusting the height of the chair seat A.

Specifically, the method comprises the following steps: as shown in fig. 1, 2 and 4, the first arm 3 comprises two upper support plates 7 which are spaced from each other left and right, and the two upper support plates 7 are respectively connected to the outer sides of the fixed member 2 and the movable member 1; a first pin shaft 5 penetrates between the first support arm 3 and the movable component 1, and a first hinge point a is formed at the position of the axis of the first pin shaft 5; a second pin shaft 6 penetrates between the first support arm 5 and the fixed component 2, and a second hinge point b is formed at the position of the axis of the second pin shaft 6; and the first pin shaft 5 and the second pin shaft 6 are arranged in parallel at intervals.

The second support arm 4 also comprises two lower support plates 8 which are spaced left and right, the two lower support plates 8 are also respectively connected to the outer sides of the fixed member 2 and the movable member 1, the two lower support plates 8 are positioned between the two upper support plates 7, and the lower support plates 8 are partially overlapped with the upper support plates 7; the first support arm 3 and the second support arm 4 always keep inclined postures relative to a horizontal plane, the first support arm 3 is positioned above the second support arm 4 in an inclined mode, and rotation of the first support arm 3 and rotation of the second support arm 4 are not interfered with each other; a third pin shaft 9 penetrates between the second support arm 4 and the fixed component 2, and a third hinge joint point c is formed at the position of the axis of the third pin shaft 9; a fourth pin shaft 10 penetrates between the second support arm 4 and the fixed component 2, and a fourth hinge point d is formed at the position of the axis of the fourth pin shaft 10; and the third pin shaft 9 and the fourth pin shaft 10 are also arranged in parallel at intervals.

As shown in fig. 4-8, namely, a parallelogram four-bar linkage 11 is formed among the first hinge point a, the second hinge point B, the third hinge point c and the fourth hinge point d, the second hinge point B and the third hinge point c are located on the fixed member 2, and the fixed member 2 is installed on the chair leg B and is in a relatively fixed state, namely, two points of the parallelogram are in a fixed state; the parallelogram can rotate up and down around the bottom edge formed by connecting the second hinge point b and the third hinge point c; as shown in fig. 7 and 8, the second hinge point b is located right above the third hinge point c, that is, a connection line between the second hinge point b and the third hinge point c is perpendicular to the horizontal plane; the stress dispersion of the second hinge point b and the third hinge point c in the rotation process of the four-bar mechanism 11 is more uniform, so that the strength of the four-bar mechanism 11 is better, the supporting effect is better, and the lifting range of the movable member 1 is larger; and along the vertical direction, the distance that the first hinge point a is higher than the fourth hinge point d is between 3 and 16cm, and the distance that the second hinge point b is higher than the third hinge point c is the same as the distance that the first hinge point a is higher than the fourth hinge point d; in the embodiment, the distance between the first hinge point a and the fourth hinge point d is 5cm, so that the first support arm 3 and the second support arm 4 are closer to each other, and a part of the first support arm and the second support arm are overlapped together, so that the movable member 1 can be lifted through only one support arm when seen from a distance, and the lifting structure is simpler and more attractive; and has mysterious feeling, and can attract children to observe and search as the structure of the children chair.

In order to realize the adjustable control of the height of the seat A, an adjusting mechanism 12 for adjusting the lifting of the movable component 1 is arranged in the movable component 1, and the adjusting mechanism 12 can switch the four-bar linkage 11 between a movable state and a fixed state; the active state of the four-bar linkage 11 is: the first support arm 3 and the second support arm 4 can rotate around the fixed component 2, and the first hinge point a and the fourth hinge point d move in the same vertical plane at the same time, so that the height of the movable component 1 is changed; the fixed state of the four-bar linkage 11 means that the first arm 3 and the movable member 1 are relatively fixed, i.e. the fixed member 4, the first arm 3 and the movable member 1 are fixed, so that the four-bar linkage 11 is kept fixed, thereby realizing the height fixation of the seat a.

As shown in fig. 2-5 and 8-10, specifically: the adjusting mechanism 12 comprises a gear steering set 13, a screw rod 14 connected to an output end 25 of the gear steering set 13 and a control handle 19 connected to an input end 24 of the gear steering set 13, and the gear steering set 13 is fixedly installed inside the movable member 1; as shown in fig. 3, the gear turning group 13 includes a first transmission tooth 15, the screw 14 is perpendicular to the first transmission tooth 15, and the screw 14 is disposed at the center of the first transmission tooth 15; a clamping block 14a is fixedly arranged on the screw rod 14, a clamping groove 15a is correspondingly arranged at the center of the first transmission tooth 15, and the clamping block 14a is clamped with the clamping groove 15a so that the screw rod 14 and the first transmission tooth 15 are circumferentially fixed; and the screw rod 14 is arranged in the movable component 1 along the upper front-back direction, and the first transmission gear 15 rotates to drive the screw rod 14 to rotate along the circumferential direction of the screw rod. The first transmission gear 15 is connected with a second transmission gear 16, the length direction of the second transmission gear 16 is perpendicular to the length direction of the screw rod 14, one end of the second transmission gear 16 is in toothed connection fit with the first transmission gear 15, and the other end of the second transmission gear 16 is in toothed connection fit with a third transmission gear 17. The axial direction of the first transmission gear 15 is vertical to the axial direction of the third transmission gear 17, and transmission between the first transmission gear 15 and the third transmission gear 17 can be effectively realized under the action of the second transmission gear 16; a transmission shaft 18 vertically penetrating out of the movable component 1 is arranged at the central position of the third transmission gear 17, the end part of the transmission shaft 18 is an input end 24, and the control handle 19 is arranged on the transmission shaft 18; the control handle 19 is rotated to input power, the first transmission gear 15 is driven to rotate under the transmission action of the third transmission gear 17 and the second transmission gear 16, and then the screw rod 14 can be driven to rotate along the circumferential direction of the screw rod; and the movable member 1 is provided with a mounting groove 20, when in mounting, the steering gear set 13 is embedded and fixed in the mounting groove 20, and the control handle 19 is mounted at the input end 24 on the transmission shaft 18 from the outer side of the movable member 1, so that the control handle 19 can be conveniently rotated and operated by human hands.

The key points are as follows: the adjusting mechanism 12 comprises a control unit and a screw rod and nut mechanism, wherein the screw rod and nut mechanism comprises a screw rod 14 and a nut 26 which is connected to the screw rod 14 and is in threaded fit with the screw rod; the control unit is a control pin 21, namely, the control pin 21 is respectively arranged at two ends of the screw nut 26, and the control pin 21 and the screw nut 26 are integrally formed; the screw rod 14 rotates to drive the nut 26 to move back and forth along the length direction of the screw rod 14; track grooves 22 capable of guiding the motion trail of the control pin 21 are correspondingly arranged on two sides of the movable component 1, and the control pin 21 is arranged in the track grooves 22 in a penetrating way and is simultaneously connected to the upper support plate 7; the position of the control pin 21 is located above the first hinge point a, the control handle 19 is rotated to drive the screw rod 14 to rotate, so that the screw nut 26 on the screw rod 14 drives the control pin 21 to move to drive the first support arm 3 to rotate around the fixed member 4, and the purpose of adjusting the height of the movable member 1 is achieved.

As shown in fig. 7, 8, 11 and 12, further, the control pin 21 is inserted into the first arm 3; when the seat is in a use state and the control handle 19 has no external force, the screw rod 14 and the screw nut 26 are in a fixed state, namely the control pin 21 keeps the first support arm 3 and the movable component 1 relatively fixed; the first support arm 3 can not rotate relative to the movable component 1 around the first hinge point a, namely, an included angle between two adjacent edges on the first connection point a is in a fixed state, and the fixed component 4 is fixed in the height direction, so that the four-bar linkage 11 is fixed, and at the moment, the movable component 1 can be supported and fixed at any height by the first support arm 3 and the second support arm 4. When the height of the seat A needs to be adjusted, the control handle 19 is rotated to enable the control pin 21 to move back and forth along the screw rod 14, the control pin 21 moves along the track groove 22 on the movable component 1 to drive the first support arm 3 to rotate, so that the first support arm 3 rotates around the first hinge point a relative to the movable component 1, namely the four-bar linkage 11 is driven to move, and the movable component 1 rotates upwards or downwards around the fixed component 2 through the first support arm 3 and the second support arm 4 to be adjusted in a lifting mode; the height of the chair seat A can be accurately adjusted by rotating the control handle 19, and stepless adjustment can be achieved; when the seat a is adjusted to a desired height, the control handle 19 is released, so that the control pin 21 fixes the first arm 3 and the movable member 1 again to fix the four-bar linkage 11, and the seat a is fixed at the corresponding height; as shown in fig. 8 and 11, when the upper and second arms 3 and 4 rotate upward around the fixed member 2 until the angle between the vertical line and the connecting line between the first hinge point a and the second hinge point b is 60 °, at this time, the control pin 21 is located at the lower end of the track groove 22, and the seat a is adjusted to the maximum height; referring to fig. 8 and 12, when the upper and second arms 3 and 4 rotate downward around the fixed member 2 until the angle between the vertical line and the connecting line between the first hinge point a and the second hinge point b is 95 °, the control pin 21 is located at the upper end of the track groove 22, and the seat a is adjusted to the minimum height. The lifting structure of the chair is simple, ingenious and novel in structure; adopt mechanical type structure, can eliminate the potential safety hazard, and can be through the height of the accurate control regulation seat support A of rotation control handle 19, be rich in the interest.

Claims

1. A lifting structure of furniture is characterized in that: comprises a fixed component, a movable component, a first support arm and a second support arm which are connected between the fixed component and the movable component; the first support arm and the second support arm are partially overlapped, one end of the first support arm is hinged with the movable component at a first hinge point, and the other end of the first support arm is hinged with the fixed component at a second hinge point; one end of the second support arm is hinged with the fixed component at the third hinge joint point, and the other end of the second support arm is hinged with the movable component at the fourth hinge joint point; a parallelogram four-bar linkage mechanism is formed among the first hinge point, the second hinge point, the third hinge point and the fourth hinge point; the movable component can be lifted relative to the fixed component through the deformation of the four-bar linkage; one of the fixed component or the movable component is provided with an adjusting mechanism, the adjusting mechanism comprises a control unit which can drive the four-bar linkage mechanism to deform, and the four-bar linkage mechanism deforms in response to the movement of the control unit so as to realize the lifting adjustment of the movable component.

2. The elevating structure of furniture according to claim 1, wherein: the first support arm is positioned obliquely above the second support arm; the first hinge point is higher than the fourth hinge point, and the second hinge point is higher than the third hinge point.

3. The elevating structure of furniture according to claim 2, wherein: and along the vertical direction, the first hinge point is higher than the fourth hinge point by 3-16cm, and the distance that the second hinge point is higher than the third hinge point is the same as the distance that the first hinge point is higher than the fourth hinge point.

4. The elevating structure of furniture according to claim 2, wherein: the second hinge point is located directly over the third hinge point, and the first hinge point is located directly over the fourth hinge point.

5. The elevating structure of furniture according to claim 1, wherein: in the lifting process of the movable component, the included angle between the connecting line between the first hinge point and the second hinge point and the vertical line is between 60 and 95 degrees.

6. The elevating structure of furniture according to claim 1, wherein: a first pin shaft penetrates between the first support arm and the movable component, and a first hinge point is formed at the position of the axis of the first pin shaft; and a second pin shaft penetrates between the first support arm and the fixed component, a second hinge point is formed at the position of the axis of the second pin shaft, and the first pin shaft and the second pin shaft are arranged in parallel.

7. The elevating structure of furniture according to claim 1, wherein: a third pin shaft penetrates between the second support arm and the fixed component, and a third hinge joint is formed at the position of the axis of the third pin shaft; a fourth pin shaft penetrates between the second support arm and the movable component, a fourth hinge point is formed at the position of the axis of the fourth pin shaft, and the third pin shaft and the fourth pin shaft are arranged in parallel.

8. The elevating structure of furniture according to claim 1, wherein: the control unit is a control pin, the adjusting mechanism is arranged in the movable component, and the adjusting mechanism further comprises a screw rod and nut mechanism, a control handle capable of driving the control pin to move and a gear steering group arranged between the screw rod and nut mechanism and the control handle; the movable component is provided with a track groove which can guide the motion trail of the control pin, and the control pin penetrates through the track groove and is connected with one of the upper support arm or the lower support arm; the screw rod and nut mechanism comprises a nut which is relatively and fixedly connected with the control pin and a screw rod which is in threaded fit with the nut; the screw rod and nut mechanism responds to the rotation of the control handle and drives the control pin to drag the upper support arm or the lower support arm to rotate so as to deform the four-bar mechanism.

9. The elevating structure of furniture according to claim 8, wherein: the gear steering group is provided with an input end and an output end, the screw rod is connected to the output end of the gear steering group, and the screw rod is arranged in the fixing component along the front-back direction; the control handle is connected to the input end of the gear steering group from the outer side of the fixed member; the rotation of the rotation control handle can drive the screw rod to rotate along the circumferential direction.

10. A piece of furniture is characterized in that: the furniture is a lifting table and comprises a lifting structure of the furniture as claimed in any one of claims 1 to 9, the fixed member being connected to the table foot and the movable member being connected to the table plate.

11. A piece of furniture is characterized in that: the furniture is a chair, and the chair comprises a chair seat, a chair foot and a lifting structure of the furniture as claimed in any one of claims 1-9, wherein the fixed member is mounted with the chair foot, and the movable member is mounted with the chair seat.

12. The piece of furniture of claim 11, wherein: the chair legs are fixed chair legs standing on the ground or movable chair legs with casters.