CN220966860U - Chair and tray thereof - Google Patents

Abstract

The utility model discloses a chair and a tray thereof, comprising a base, a tailstock, a footstock, a first connecting piece, a second connecting piece, a toothed plate and a spring; the upper part of the first connecting piece is hinged with the rear part of the footstock through a first connecting shaft, the lower part of the first connecting piece is hinged with the tailstock through a second connecting shaft, the tailstock is hinged with the base through a third connecting shaft, the lower part of the second connecting piece is hinged with the front part of the base through a fourth connecting shaft, and the upper part of the second connecting piece is hinged with the front part of the footstock through a fifth connecting shaft; the third connecting shaft is positioned between the second connecting shaft and the fourth connecting shaft; the tooth-shaped plate is fixedly connected with the base or integrally formed, the tooth-shaped plate is connected with the first connecting piece through tooth engagement, and when the tailstock drives the first connecting piece to move, the first connecting piece can rotate around the tooth-shaped plate; the front part of the tailstock is provided with a sixth connecting shaft, and two ends of the spring are respectively connected with the first connecting piece and the tailstock. So set up, make the adjustable inclination of footstock bigger, the commonality of tray is better.

Description

Chair and tray thereof

Technical Field

The utility model relates to the field of seats, in particular to a chair and a tray thereof.

Background

As one of the indispensable living appliances, along with the increasing of the living standard of people, the demand of people for the comfort level of the seat is also higher and higher, so that the functional seat with the synchronous linkage of the seat back appears, and the seat base and the seat back synchronously operate when the seat is tilted, thereby improving the use comfort level.

Patent document with publication number CN212938946U discloses a chassis mechanism of a seat and a seat, including a base, a bracket, and a rocker; a first pin shaft is penetrated between the front end of the bracket and the front end of the base so that the bracket rotates around the base by taking the first pin shaft as a fulcrum; a second pin shaft is penetrated between the front end of the seesaw and the rear end of the base so that the seesaw rotates around the base by taking the second pin shaft as a rotating shaft; a linkage structure is arranged between the rear end of the bracket and the rear end of the rocker, and comprises a third pin shaft penetrating through the bracket and the rocker and a track groove for guiding the movement track of the rocker; the track groove is arranged on two sides of one of the rocker or the bracket, and the third pin shaft is arranged in the track groove in a penetrating way; the bracket is in a forward tilting state and a backward tilting state, and when the bracket is forward tilting, the third pin shaft slides along the track groove and acts on the rocker, so that the rear end of the rocker is synchronously tilted upwards; when the bracket leans backwards, the third pin shaft slides along the track groove and acts on the rocker, so that the rear end of the rocker is synchronously tilted downwards.

In the prior art, a base for installing a seat and a bracket for installing the seat are directly hinged through a pin shaft, so that the bracket only rotates around the pin shaft in the process of communicating the bracket with a rocker, the change of the inclination angle of the bracket is small, and the chair cannot obtain better sitting depth.

Disclosure of utility model

In order to solve the problem that in the prior art, in the process of realizing the linkage of a chair seat and a chair back, the chair seat can only rotate by a connecting shaft of the chair seat and a base, so that the change degree of the inclination angle of the chair seat is small, the utility model aims to provide the chair and the tray thereof, which can enable the change range of the inclination angle of the chair seat to be larger and the change degree of the inclination angle to be higher in the process of linking the chair back and the chair seat.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the tray comprises a base for mounting chair legs, a tailstock for mounting a chair back, a top seat for mounting the chair seat, a first connecting piece, a second connecting piece, a tooth-shaped plate and a spring; the upper part of the first connecting piece is hinged with the rear part of the footstock through a first connecting shaft, the lower part of the first connecting piece is hinged with the tailstock through a second connecting shaft, the tailstock is hinged with the base through a third connecting shaft, the lower part of the second connecting piece is hinged with the front part of the base through a fourth connecting shaft, and the upper part of the second connecting piece is hinged with the front part of the footstock through a fifth connecting shaft; the third connecting shaft is positioned between the second connecting shaft and the fourth connecting shaft; the tooth-shaped plate is fixedly connected with the base or integrally formed, the tooth-shaped plate is connected with the first connecting piece through tooth engagement, and when the tailstock drives the first connecting piece to move, the first connecting piece can rotate around the tooth-shaped plate; the front part of the tailstock is provided with a sixth connecting shaft, and two ends of the spring are respectively connected with the first connecting piece and the tailstock.

Preferably, the side surface of the tooth-shaped plate is provided with external teeth in a protruding mode, and the external teeth on the tooth-shaped plate are distributed in a sector shape; external teeth are arranged on the side face of the first connecting piece, and the external teeth of the first connecting piece are distributed in a sector shape; the toothed plate and the first connecting piece are connected through external tooth meshing.

Preferably, the central axis of the sector external teeth of the tooth-shaped plate coincides with the axis of the third connecting shaft; and the third connecting shaft is welded on the base.

Preferably, the bottom of the top seat is downwards protruded with two first connecting parts, the left and right sides of the base are upwards bent to form a third connecting part, and the left and right ends of the second connecting piece are backwards bent to form a fourth connecting part; the upper portion of fourth connecting portion inserts from front to back between two first connecting portions, and fourth connecting portion articulates with first connecting portion through the fifth connecting axle, and the lower part of fourth connecting portion inserts from front to back between two third connecting portions, and fourth connecting portion articulates with third connecting portion through the fourth connecting axle.

Preferably, the tailstock comprises two first connecting plates which are arranged left and right, the two first connecting plates are fixedly connected through a second connecting plate, the first connecting plates are inserted between two third connecting parts of the base from back to front, and the first connecting plates are hinged with the third connecting parts of the base through third connecting shafts.

Preferably, the two third connecting portions and the two first connecting portions are located between the two first connecting members; the two tooth-shaped plates and the first connecting piece are arranged in a one-to-one correspondence.

Preferably, a limiting shaft is fixed on the base and is positioned below the front part of the tailstock.

Preferably, a sixth connecting shaft is mounted at the front part of the tailstock, and two ends of the spring are respectively connected with the first connecting shaft and the sixth connecting shaft.

Preferably, the first mounting seat and the second mounting seat are respectively mounted at two ends of the spring, the first mounting seat is sleeved on the sixth connecting shaft, and the second mounting seat is sleeved on the first connecting shaft.

A chair comprises the tray.

The technical scheme of the utility model has the beneficial effects that: in the scheme, the second connecting piece is connected with the front end of the footstock and the front end of the base respectively through the fourth connecting shaft and the fifth connecting shaft, so, when the tailstock pulls the rear end of the footstock through the first connecting piece, the footstock rotates by taking the fourth connecting shaft as a rotation center, the degree of tilting of the front end of the footstock can be effectively amplified through the second connecting piece, and then the change degree of the inclination angle of the chair is increased in the linkage process of the chair and the chair back, and the adjustable range of the sitting depth of the chair is also larger.

And moreover, according to the design requirements of different chairs, the initial state of the tray can be easily adjusted by adjusting the meshing position of the first connecting piece on the toothed plate, and the linkage path of the tailstock and the footstock in the use function process of the chair is adjusted, so that the tray has stronger universality, and further, the manufacturing precision and the manufacturing cost of the tray are lower.

Drawings

FIG. 1 is a schematic view of a tray;

fig. 2 is a schematic structural view of the tray with the top base removed.

Reference numerals: 1. a base; 11. a third connecting portion; 2. a tailstock; 21. a first connection plate; 22. a second connecting plate; 3. a top base; 31. a first connection portion; 4. A first connector; 5. a second connector; 51. a fourth connecting portion; 6. a tooth-shaped plate; 7. an elastic member; 71. a spring; 72. a first mount; 73. a second mounting base; 81. a first connecting shaft; 82. a second connecting shaft; 83. a third connecting shaft; 84. a fourth connecting shaft; 85. a fifth connecting shaft; 86. a sixth connecting shaft; 87. and a limiting shaft.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The azimuth of the following embodiment is shown in fig. 1, in which the azimuth is shown in fig. 1, the azimuth is shown in the upper part of the top seat, the azimuth is shown in the lower part of the bottom seat, and the azimuth is shown in the rear part of the tail seat.

Examples

The tray as shown in fig. 1 and 2 comprises a base 1, a tailstock 2, a top seat 3, a first connecting piece 4, a second connecting piece 5, a toothed plate 6 and an elastic piece 7; the upper part of the first connecting piece 4 is hinged with the rear part of the top seat 3 through a first connecting shaft 81, the lower part of the first connecting piece 4 is hinged with the tail seat 2 through a second connecting shaft 82, the tail seat 2 is hinged with the base 1 through a third connecting shaft 83, the lower part of the second connecting piece 5 is hinged with the front part of the base 1 through a fourth connecting shaft 84, and the upper part of the second connecting piece 5 is hinged with the front part of the top seat 3 through a fifth connecting shaft 85; the third connecting shaft 83 is located between the second connecting shaft 82 and the fourth connecting shaft 84;

The tooth-shaped plate 6 is fixedly connected with the base 1 or integrally formed, the tooth-shaped plate 6 is connected with the first connecting piece 4 through tooth engagement, and when the tailstock 2 drives the first connecting piece 4 to move, the first connecting piece 4 can rotate around the tooth-shaped plate 6;

the two ends of the elastic piece 7 are respectively connected with the first connecting piece 4 and the tailstock 2.

So arranged, when the rear end of the tailstock 2 swings downwards, the rear end of the top stock 3 can be pulled to swing downwards and backwards by the first connecting piece 4, and the front end of the top stock 3 pulls the second connecting piece 5 to swing around the fourth hinge shaft; when the first connecting piece 4 swings, the toothed plate 6 drives the first connecting piece 4 to rotate around the second connecting shaft 82 through external teeth due to the fact that the first connecting piece 4 and the toothed plate 6 are abutted tightly, and when the first connecting piece 4 rotates around the second connecting shaft 82, the speed of sinking of the rear end of the top seat 3 can be accelerated, and further the top seat 3 can obtain larger education, so that a user can obtain better use experience.

In the assembly process of the tray, the first connecting piece is meshed with external teeth at different positions on the toothed plate, so that the initial state of the tray is adjusted, the linkage path of the top seat and the tail seat is adjusted, and the manufacturing precision and the manufacturing cost of the tray are further reduced; meanwhile, the initial positions of the top seat and the tail seat can be adjusted, so that the tray can be suitable for chairs of different styles, and the tray is higher in universality.

In this embodiment, the sixth connecting shaft 86 is mounted at the front of the tailstock, the elastic member 7 includes a spring 71, a first mount 72 and a second mount 73, the first mount 72 and the second mount 73 are separately disposed at two ends of the spring 71, the first mount 72 is disposed on the sixth connecting shaft 86 at the front end of the base 1, and the second mount 73 is sleeved on the first connecting shaft 81 at the front end of the tailstock 2; further preferably, two springs 71 are provided, and a first mounting seat 72 and a second mounting seat 73 are mounted on both springs 71, wherein the two first mounting seats 72 are integrally formed. So set up for the position of two springs is relatively fixed, makes the motion process of tailstock 2 more stable through two sets of springs 71, and can provide more tension in order to guarantee tray reciprocating motion's uniformity.

In order to make the movement and support of the top seat 3 more stable, in this embodiment, external teeth are protruded on the side surface of the tooth-shaped plate 6, and the external teeth on the tooth-shaped plate 6 are arranged in a sector shape; the side surface of the first connecting piece 4 is provided with external teeth, and the external teeth of the first connecting piece 4 are distributed in a sector shape; the first connecting piece 4 of the toothed plate 6 is connected through external tooth meshing; so set up for the linkage process of tailstock 2 and footstock 3 is more stable. Further preferably, the central axis of the sector-shaped external teeth on the toothed plate 6 coincides with the axis of the third connecting shaft 83; the said fixing is carried out on the base 1 by means of a third connecting shaft 83. The arrangement makes the structure of the tray simpler and more compact.

In order to make the structure of the tray more compact, in this embodiment, two first connecting portions 31 are protruded downwards from the bottom of the top base 3, the left and right sides of the base 1 are bent upwards to form a third connecting portion 11, and the left and right ends of the second connecting member 5 are bent backwards to form a fourth connecting portion 51; the upper part of the fourth connection part 51 is inserted between the two first connection parts 31 from front to rear, the fourth connection part 51 is hinged with the first connection parts 31 through the fifth connection shaft 85, the lower part of the fourth connection part 51 is inserted between the two third connection parts 11 from front to rear, and the fourth connection part 51 is hinged with the third connection parts 11 through the fourth connection shaft 84. Further, the tailstock 2 includes two first connecting plates 21 disposed left and right, the two first connecting plates 21 are fixedly connected through the second connecting plate 22, the first connecting plates 21 are inserted between the two third connecting portions 11 of the base 1 from the rear to the front, and the first connecting plates 21 are hinged to the third connecting portions 11 of the base 1 through the third connecting shafts 83.

Further preferably, the pitch of the two first connection portions 31 is the same as the pitch of the two third connection portions 11, and the pitch of the two first connection plates 21 is the same as the pitch of the two fourth connection portions 51.

In order to provide balance of the top base 3, in this embodiment, there are two first connecting members 4, and the third connecting portion 11 and the first connecting portion 31 are located between the two first connecting members 4; the number of the tooth-shaped plates 6 is two, and the tooth-shaped plates 6 and the first connecting pieces 4 are arranged in a one-to-one correspondence.

In order to facilitate the installation of the toothed plate 6, in this embodiment, the third connecting shaft 83 is fixed on the base 1, the tailstock 2 is sleeved on the third connecting shaft 83, and two toothed plates are fixedly connected with or integrally formed with two third connecting portions. Further preferably, the tooth plate is welded to the third connection.

In order to improve the consistency of the movements of the two first connecting pieces 4, in this embodiment, the first connecting shaft 81 transversely penetrates through the two first connecting portions 31 of the top base 3, and the two first connecting pieces 4 are respectively and fixedly installed on two ends of the first connecting shaft 81; the third connecting shaft 83 transversely penetrates through two third connecting parts 11 on the base 1, and two toothed plates 6 are respectively arranged at two ends of the third connecting shaft 83. In this way, the two first links 4 can be moved synchronously and installed to increase the degree of flow of the tray movement. Further preferably, the fourth connecting shaft 84 and the fifth connecting shaft 85 each extend transversely through the first connecting portion 31 and the fourth connecting portion 51.

In order to ensure that the elastic member 7 has sufficient elastic force, in this embodiment, a limiting shaft 87 is fixed on the base 1, the limiting shaft 87 is located between the third connecting shaft 83 and the fourth connecting shaft 84, and the limiting shaft 87 is located below the front end of the tailstock 2. So arranged, the lowermost position of the front end of the tailstock 2 is restrained by the restraining shaft 87, and sufficient tension of the elastic member 7 is ensured to restore the tailstock 2.

The chair comprises the tray, a chair seat, a chair back and feet, wherein the feet are arranged on the base 1, the chair back is arranged on the tailstock 2, and the chair seat is arranged on the top seat 3.

The linkage process of the tailstock 2 and the footstock 3 is as follows: the top of the chair back swings backwards, the chair back drives the tailstock 2 to rotate around the third connecting shaft 83, the rear end of the tailstock 2 sinks and the front end of the tailstock 2 rises, the tailstock 2 pulls the rear end of the top seat 3 to sink through the first connecting piece 4 and the first connecting shaft, and the front end of the top seat 3 pulls the top of the second connecting piece 5 to enable the second connecting piece 5 to rotate around the fourth connecting shaft 84; in the process of sinking the first connecting piece 4, since the tailstock 2 uses the third connecting shaft 83 as a rotation center, the tailstock 2 drives the second connecting shaft 82 to rotate around the third connecting shaft 83, and since the first connecting piece 4 and the toothed plate 6 are engaged and connected through external teeth, the toothed plate 6 can toggle the first connecting piece 4 to rotate by using the second connecting shaft 82 as a rotation center through the external teeth, so as to accelerate the sinking speed of the rear end of the top seat 3, and thus the spring 71 is stretched by the tensile force from the first connecting shaft 81.

The tailstock resetting process is that; the spring 71 pulls the first connecting shaft 81 to swing upwards, the first connecting shaft 81 pulls the top seat 3 and the first connecting piece 4 to swing upwards synchronously, the first connecting piece 4 pulls the tail seat 2 through the second connecting shaft 82, the tail seat 2 rotates by taking the third connecting shaft 83 as a rotation center, the tooth-shaped plate 6 pulls the first connecting piece 4 through the external teeth, the first connecting piece 4 rotates by taking the second connecting shaft 82 as the rotation center, and the speed of resetting the top seat 3 is accelerated until the tray is reset.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the utility model.

Claims (10)

1. The utility model provides a tray, includes base (1) that are used for installing the chair foot, tailstock (2) that are used for installing the back of the chair and footstock (3) that are used for installing the seat, its characterized in that: the novel tooth-shaped plate also comprises a first connecting piece (4), a second connecting piece (5), a tooth-shaped plate (6) and a spring (71);

The upper part of the first connecting piece (4) is hinged with the rear part of the footstock (3) through a first connecting shaft (81), the lower part of the first connecting piece (4) is hinged with the tailstock (2) through a second connecting shaft (82), the tailstock (2) is hinged with the base (1) through a third connecting shaft (83), the lower part of the second connecting piece (5) is hinged with the front part of the base (1) through a fourth connecting shaft (84), and the upper part of the second connecting piece (5) is hinged with the front part of the footstock (3) through a fifth connecting shaft (85); the third connecting shaft (83) is positioned between the second connecting shaft (82) and the fourth connecting shaft (84);

the tooth-shaped plate (6) is fixedly connected with the base (1) or integrally formed, the tooth-shaped plate (6) is connected with the first connecting piece (4) through tooth engagement, and when the tailstock (2) drives the first connecting piece (4) to move, the first connecting piece (4) can rotate around the tooth-shaped plate (6);

the two ends of the spring (71) are respectively connected with the first connecting piece (4) and the tailstock (2).

2. A pallet as defined in claim 1, wherein: external teeth are protruded on the side surface of the tooth-shaped plate (6), and the external teeth on the tooth-shaped plate (6) are distributed in a sector shape; the side surface of the first connecting piece (4) is provided with external teeth, and the external teeth of the first connecting piece (4) are distributed in a sector shape; the toothed plate (6) and the first connecting piece (4) are connected through external tooth meshing.

3. A pallet as defined in claim 1, wherein: the central axis of the sector external teeth of the tooth-shaped plate (6) coincides with the axis of the third connecting shaft (83); the third connecting shaft (83) is welded on the base (1).

4. A pallet as defined in claim 1, wherein: the bottom of the top seat (3) is downwards protruded with two first connecting parts (31), the left and right sides of the base (1) are upwards bent to form a third connecting part (11), and the left and right ends of the second connecting piece (5) are backwards bent to form a fourth connecting part (51); the upper part of the fourth connecting part (51) is inserted between the two first connecting parts (31) from front to back, the fourth connecting part (51) is hinged with the first connecting parts (31) through a fifth connecting shaft (85), the lower part of the fourth connecting part (51) is inserted between the two third connecting parts (11) from front to back, and the fourth connecting part (51) is hinged with the third connecting parts (11) through a fourth connecting shaft (84).

5. A pallet as defined in claim 4, wherein: the tailstock (2) is including controlling two first connecting plates (21) that set up, and two first connecting plates (21) pass through second connecting plate (22) fixed connection, and first connecting plate (21) are from the back forward between two third connecting portions (11) of base (1), and first connecting plate (21) are articulated with third connecting portion (11) of base (1) through third connecting axle (83).

6. A pallet as defined in claim 4, wherein: the two third connecting parts (11) and the two first connecting parts (31) are positioned between the two first connecting pieces (4); the two toothed plates (6) are arranged in one-to-one correspondence with the first connecting pieces (4).

7. A pallet as defined in claim 1, wherein: a limiting shaft (87) is fixed on the base (1), and the limiting shaft (87) is positioned below the front part of the tailstock (2).

8. A pallet as defined in claim 1, wherein: a sixth connecting shaft (86) is arranged at the front part of the tailstock (2), and two ends of the spring (71) are respectively connected with the first connecting shaft (81) and the sixth connecting shaft (86).

9. A pallet as defined in claim 8, wherein: the first mount pad (72) and second mount pad (73) are installed respectively at both ends of spring (71), and first mount pad (72) cover is established on sixth connecting axle (86), and second mount pad (73) cover is established on first connecting axle (81).

10. A chair, characterized in that: a pallet comprising any of the above claims 1-9.