CN220756978U - Tray and chair - Google Patents

Abstract

The utility model discloses a tray and a chair, which comprises a base, a tailstock and a footstock, and is characterized in that: the device also comprises a first connecting piece, a second connecting piece, a tooth-shaped plate and an elastic piece; the first connecting piece is hinged with the footstock through a first connecting shaft, the first connecting piece is hinged with the tailstock through a second connecting shaft, and the tailstock is hinged with the base through a third connecting shaft; the third connecting shaft is positioned in front of the second connecting shaft; the upper end of the second connecting piece is hinged with the front part of the top seat, and the lower end of the second connecting piece is hinged with the front part of the base; the tooth-shaped plate is fixedly connected with the base or integrally formed, and the tooth-shaped plate is connected with the first connecting piece through tooth meshing; when the tailstock rotates around the third connecting shaft, the first connecting piece rotates around the toothed plate; the two ends of the elastic piece are respectively connected with the tailstock and the base. Thus, the adjustment range of the sitting depth of the chair is enlarged, and the universality of the tray is improved.

Description

Tray and chair

Technical Field

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

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 publication No. 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, the wane for installing the chair back is directly articulated with the base and the bracket for installing the chair seat respectively through two round pins, and when so setting up, the variation of bracket inclination is only relevant with the interval of two round pins to because the restriction of seat structure, the volume of seat chassis is not big, and the interval of two round pins is less, the in-process that this just leads to chair seat and the linkage of back of the chair, and the chair seat angle change rate is less, and then makes the chair unable to obtain better sitting deeply.

Disclosure of Invention

In order to solve the problem of low change rate of the inclination angle of the chair caused by the fact that the chair back is directly pulled by the small size of the tray in the prior art, the utility model aims to provide the tray and the chair, and the change rate of the inclination angle of the chair can be improved in the linkage process of the chair back and the chair seat, so that the change rate of the sitting depth of the chair is higher.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the tray comprises a base, a tailstock, a top seat, a first connecting piece, a second connecting piece, a tooth-shaped plate and an elastic piece; the first connecting piece is hinged with the footstock through a first connecting shaft, the first connecting piece is hinged with the tailstock through a second connecting shaft, and the tailstock is hinged with the base through a third connecting shaft; the third connecting shaft is positioned in front of the second connecting shaft; the upper end of the second connecting piece is hinged with the front part of the top seat, and the lower end of the second connecting piece is hinged with the front part of the base; the tooth-shaped plate is fixedly connected with the base or integrally formed, and the tooth-shaped plate is connected with the first connecting piece through tooth meshing; when the tailstock rotates around the third connecting shaft, the first connecting piece rotates around the toothed plate; the two ends of the elastic piece are respectively connected with the tailstock and the base.

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 outer teeth of the toothed 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 provided with two first connecting parts in a downward protruding mode, and the left side and the right side of the base are bent upwards to form third connecting parts; the front part of the tailstock is inserted between the two third connecting parts, and the tailstock is hinged with the two third connecting parts through a third connecting shaft; the first connecting parts and the third connecting parts are positioned between the two first connecting parts; the two tooth-shaped plates are respectively arranged on the two third connecting parts; the elastic piece is positioned between the two third connecting parts.

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 the two third connecting parts of the base from back to front, and the two first connecting plates are hinged with the third connecting parts of the base through third connecting shafts.

Preferably, the second connecting member is hinged to the front portion of the top base through a fifth connecting shaft, and the second connecting member is hinged to the base through a fourth connecting shaft.

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

Preferably, the elastic piece is a spring, and two ends of the spring are respectively connected with the tailstock and the base.

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

A chair comprises the tray.

The technical scheme of the utility model has the beneficial effects that: in the scheme, the tailstock can drive the second connecting shaft to rotate around the third connecting shaft when rotating, and the second connecting shaft can pull the rear end of the top seat downwards to sink through the first connecting piece; meanwhile, the toothed plate limits the first connecting piece, so that the first connecting piece rotates by taking the second connecting shaft as a rotation center, the height of the rear end of the top seat is further reduced, the change rate of the angle of the top seat is further improved, and the adjustment range of the sitting depth of the chair is larger. In the assembly process of the tray, the inclination of the top seat in the initial state can be adjusted by adjusting the meshing position of the first connecting piece and the toothed plate, so that the tray can be matched with chairs of different styles.

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 illustrated in fig. 1 and 2 comprises a base 1, a tailstock 2 and a top seat 3, and is characterized in that: the tooth-shaped plate comprises a first connecting piece 4, a second connecting piece 5, a tooth-shaped plate 6 and an elastic piece 7; the upper end of the second connecting piece 5 is hinged with the front part of the top seat 3, and the lower end of the second connecting piece 5 is hinged with the front part of the base 1;

the first connecting piece 4 is hinged with the top seat 3 through a first connecting shaft 81, the first connecting piece 4 is hinged with the tailstock 2 through a second connecting shaft 82, and the tailstock 2 is hinged with the base 1 through a third connecting shaft 83; the third connecting shaft 83 is located in front of the second connecting shaft 82; the tooth-shaped plate 6 is fixedly connected or integrally formed on the base 1, and the tooth-shaped plate 6 is connected with the first connecting piece 4 through tooth meshing; when the tailstock 2 rotates around the third connecting shaft 83, the first connecting piece 4 rotates around the tooth-shaped plate 6; the two ends of the elastic piece 7 are respectively connected with the tailstock 2 and the base 1.

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 limiting means such as friction and the like, the first connecting piece 4 can accelerate the sinking speed of the rear end of the top seat 3 when rotating around the second connecting shaft 82, and further the top seat 3 can obtain larger invitation teaching, so that a user can obtain better use experience.

In the assembly process of the tray, the first connecting piece is meshed with the 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, as the initial positions of the top seat and the tail seat can be adjusted, the tray can be suitable for chairs of different styles, and the tray has stronger universality

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. It is further preferred that the central axis of the sector-shaped outer teeth on the toothed plate 6 coincides with the axis of the 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 end 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 end 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, the two tooth-shaped plates are respectively arranged on two sides of the base, and the tooth-shaped plates 6 and the first connecting pieces 4 are arranged in 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 the toothed plate 6 is fixed on the third connecting shaft 83.

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.

In this embodiment, the elastic member 7 includes a spring 71, a first mounting seat 72 and a second mounting seat 73, where the first mounting seat 72 and the second mounting seat 73 are separately disposed at two ends of the spring 71, the first mounting seat 72 is disposed on a fourth connecting shaft 84 at the front end of the base 1, and the second mounting seat 73 is sleeved on a sixth connecting shaft 86 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 arranged, the motion process of the tailstock 2 is more stable by the two sets of springs 71 and more tension can be provided to ensure consistency of the reciprocating motion of the pallet.

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 is tilted upwards, the tailstock stretches the spring 71 through the sixth connecting shaft 86 to open the spring 71, the tailstock 2 pulls the rear end of the top seat 3 to sink through the first connecting piece 4, 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 sinking process of the first connecting piece 4, the tailstock 2 takes the third connecting shaft 83 as a rotation center, so that the tailstock 2 drives the second connecting shaft 82 to rotate around the third connecting shaft 83, and the toothed plate 6 can stir the first connecting piece 4 to rotate by taking the second connecting shaft 82 as a rotation center through external teeth due to the fact that the first connecting piece 4 is meshed with the toothed plate 6 through external teeth, so that the sinking speed of the rear end of the top seat 3 is accelerated.

The tailstock resetting process is that; the spring 71 pulls the sixth connecting shaft 86 to enable the sixth connecting shaft 86 to pull the front end of the tailstock 2 to swing downwards, the tailstock 2 rotates by taking the third connecting shaft 83 as a rotation center, the rear part of the tailstock 2 drives the second connecting shaft 82 and the first connecting piece 4 to swing upwards, and the first connecting piece 4 is meshed with the toothed plate 6 through external teeth, so that in the process of rotating the second connecting shaft 82 around the third connecting shaft 83, the first connecting piece 4 rotates by taking the second connecting shaft 82 as the rotation center and speeds up the rising speed of the rear part of the top seat 3; the rear part of the top seat 3 is pushed to tilt upwards by the first connecting shaft 81, and the second connecting piece 5 is pushed by the top seat 3 through the fifth connecting shaft 82, so that the second connecting piece 5 rotates by taking the fourth connecting shaft 84 as a rotation center 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), tailstock (2) and footstock (3), 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 an elastic piece (7);

the first connecting piece (4) is hinged with the footstock (3) through a first connecting shaft (81), the first connecting piece (4) is hinged with the tailstock (2) through a second connecting shaft (82), and the tailstock (2) is hinged with the base (1) through a third connecting shaft (83); the third connecting shaft (83) is positioned in front of the second connecting shaft (82); the upper end of the second connecting piece (5) is hinged with the front part of the top seat (3), and the lower end of the second connecting piece (5) is hinged with the front part of the base (1);

the tooth-shaped plate (6) is fixedly connected with the base (1) or integrally formed, and the tooth-shaped plate (6) is connected with the first connecting piece (4) through tooth meshing; when the tailstock (2) rotates around the third connecting shaft (83), the first connecting piece (4) rotates around the toothed plate (6);

the two ends of the elastic piece (7) are respectively connected with the tailstock (2) and the base (1).

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 claimed in claim 2, characterised in that: 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), and the left side and the right side of the base (1) are upwards bent to form a third connecting part (11); the front part of the tailstock (2) is inserted between the two third connecting parts (11), and the tailstock (2) is hinged with the two third connecting parts (11) through a third connecting shaft (83); the number of the first connecting pieces (4) is two, and the first connecting part (31) and the third connecting part (11) are positioned between the two first connecting pieces (4); the two tooth-shaped plates (6) are respectively arranged on the two third connecting parts (11); the elastic piece (7) is positioned between the two third connecting parts (11).

5. A pallet as defined in claim 4, wherein: the tailstock (2) comprises two first connecting plates (21) which are arranged left and right, the two first connecting plates (21) are fixedly connected through a second connecting plate (22), the first connecting plates (21) are inserted between two third connecting parts (11) of the base (1) from the back to the front, and the two first connecting plates (21) are hinged with the third connecting parts (11) of the base (1) through third connecting shafts (83).

6. A pallet as defined in claim 1, wherein: the second connecting piece (5) is hinged with the front part of the top seat (3) through a fifth connecting shaft (85), and the second connecting piece (5) is hinged with the base (1) through a fourth connecting shaft (84).

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: the elastic piece (7) is a spring (71), and two ends of the spring (71) are respectively connected with the tailstock (2) and the base (1).

9. A pallet as defined in claim 8, 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 fourth connecting shaft (84) and the sixth connecting shaft (86).

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