CN215502096U - Tray and chair - Google Patents

Abstract

The utility model discloses a chair and a tray; the chair comprises a base used for mounting chair legs, a top seat used for mounting a chair seat and a tailstock used for mounting a chair back, wherein the base is movably connected with the top seat through a first connecting shaft, the base is hinged with the tailstock through a fourth connecting shaft, the tailstock is hinged with the top seat through a fifth connecting shaft, the chair also comprises a locking plate arranged in the base in a swinging mode, the fourth connecting shaft penetrates through the locking plate, a third connecting shaft penetrates through the locking plate, two ends of the third connecting shaft are connected with two second connecting parts of the tailstock, synchronous action of the locking plate and the tailstock is realized, the third connecting shaft penetrates through the base and is in sliding connection with the base, and the third connecting shaft and the fourth connecting shaft are positioned on the lower sides of the first connecting shaft and the fifth connecting shaft; this scheme is through arranging the subassembly that is used for the locking and the piece that resets, and the time tray is compacter, and the locking effect is more stable.

Description

Tray and chair

Technical Field

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

Background

The chair is a necessary household in daily life, and at present, no matter a common household chair, a competitive chair or other chairs with other purposes have the functions of lifting and adjusting a backrest, some external accessories such as a back cushion, a cushion, an air rod and the like are removed, a tray of the chair is particularly important as an important connecting and controlling component, and the safety, the stability and the like of the chair directly influence the integral use of the chair.

Chinese patent 202010885721.0 describes a chair and a self-carrying tray thereof, wherein: comprises a fixed seat fixedly connected with a seat support supporting rod, a first base fixedly connected with the seat and a second base fixedly connected with a seat back, wherein the fixed seat is also provided with two first spring assemblies, a locking plate, a first connecting shaft and a second connecting shaft, the first connecting shaft is positioned in front of the second connecting shaft, one end of the second base is hinged with the first base, the other end of the second base is hinged with the fixed seat, the first base is movably connected with the fixed seat through the first connecting shaft, the second connecting shaft is fixedly arranged on the fixed seat, the front end of the locking plate is rotatably arranged on the first connecting shaft, the rear end of the locking plate is movably connected with the second connecting shaft, the two first spring assemblies are respectively positioned at two sides of the connecting shaft locking plate, the front end of the first spring assembly is movably connected with the first connecting shaft, the rear end of the first spring assembly is movably connected with the second connecting shaft, the locking plate is provided with a plurality of locking parts, the second spring assembly can move left and right on the first mounting seat by tensioning and loosening the inclining and inclining pull wire, and the locking part assembly is driven to move left and right on the locking bolt mounting seat so as to be matched with the locking parts to limit the rotation of the locking plate; the locking parts at least comprise a first locking long hole and a second locking long hole which are distributed at intervals, the first locking long hole is positioned behind the second locking long hole, and two ends of the first locking long hole and two ends of the second locking long hole point to the up-and-down direction. In the scheme, the locking plate structure and the reset structure of the tray are connected with each other, so that the structure for locking occupies more tray space; meanwhile, the locking part is in a long hole form, and the arrangement between the two long holes ensures that the locking effect of the tray is unstable when the tray is locked by the bolt piece.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a tray and a chair having a more compact structure and more stable locking.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a tray, is including the base that is used for installing the chair foot, the tailstock that is used for installing the seat support and the tailstock that is used for installing the back of the chair, be equipped with downwardly extending's first connecting portion on the footstock, the tailstock is including the second connecting portion that extend forward, the base through first connecting axle with the first connecting portion swing joint of footstock, the base through the fourth connecting axle with the second connecting portion of tailstock are articulated, the tailstock through the fifth connecting axle with the first connecting portion of footstock are articulated, first connecting axle is located fifth connecting axle rear, fourth connecting axle are located first connecting axle with between the fifth connecting axle, the fourth connecting axle is located first connecting axle with fifth connecting axle below.

Preferably, there are two first connecting portions and two second connecting portions, the base is located between the two second connecting portions, and the two second connecting portions are located between the two first connecting portions.

Preferably, the tailstock locking device further comprises a locking plate arranged in the base in a swinging mode, the fourth connecting shaft penetrates through the locking plate, a third connecting shaft penetrates through the locking plate, two ends of the third connecting shaft are connected with the two second connecting parts of the tailstock to achieve synchronous action of the locking plate and the tailstock, and the third connecting shaft penetrates through the base and is in sliding connection with the base.

Preferably, the fourth connecting shaft and the third connecting shaft are located between the first connecting shaft and the fifth connecting shaft, the third connecting shaft is located below the first connecting shaft and the fifth connecting shaft, and the third connecting shaft is located in front of the fourth connecting shaft.

Preferably, the tail stock is further provided with an inclination and elevation locking assembly located below the third connecting shaft, the inclination and elevation locking assembly comprises an inclination and elevation pull wire, a first mounting seat and a spring bolt mounting seat, the first mounting seat is provided with a spring assembly capable of moving left and right, the spring bolt mounting seat is provided with a spring bolt assembly capable of moving left and right, the spring bolt assembly is provided with a plurality of locking portions, the spring assembly can move left and right on the first mounting seat through tensioning or loosening the inclination and elevation pull wire, then the spring bolt assembly is driven to move left and right on the spring bolt mounting seat, the spring bolt assembly is matched with the locking portions to limit the swing of the locking plate, and then an inclination and elevation angle of the tail stock is controlled through the third connecting shaft, the locking portions are locking holes, the spring bolt assembly is a locking pin, and the locking holes are connected with the locking pin in a plugging mode.

Preferably, the lifting locking assembly comprises a lifting stay wire and a pressing plate hinged in the base, and the pressing plate is movably connected with the lifting stay wire; the fourth connecting shaft is sleeved with a stay wire steering sleeve, and the lifting stay wire extends forwards from the pressing plate to the lower part of the stay wire steering sleeve.

Preferably, the top base is fixedly connected with a top simple cover at the front end, the base is hinged with a bottom simple cover at the front end, the top simple cover covers and is movably connected with the bottom simple cover, and the top simple cover movably connects the bottom simple cover.

Preferably, the top simple cover is provided with a second connecting shaft in a protruding mode, the bottom simple cover is provided with a second sliding hole, and the second connecting shaft is located in the second sliding hole.

Preferably, an elastic reset piece is arranged between the first connecting shaft and the fifth connecting shaft and comprises a pressure spring and a telescopic guide piece, two ends of the guide piece are respectively rotatably installed on the first connecting shaft and the fifth connecting shaft, and the pressure spring is located between the first connecting shaft and the fifth connecting shaft and sleeved on the guide piece.

A chair comprising a tray as described above.

According to the technical scheme, the sliding connection position of the tailstock and the base is located at the rear, so that the distance between the first connecting shaft and the fifth connecting shaft can be flexibly changed according to an actual use scene, and the tray is more compact; the locking plate is arranged in the base in a swinging mode, and the locking plate and the tailstock synchronously act through the third connecting shaft and the fourth connecting shaft, so that the tray is more stable and effective when in a locking state; the locking plate and the tilting assembly for locking are all positioned below the first connecting shaft and the fifth connecting shaft, so that the locking plate can swing in a small range to complete locking action, the structure of the tray is further compact, and the locking effect is more accurate and stable; the locking plate is in a fan shape, and the locking hole for locking is close to the arc-shaped edge of the locking plate, so that the volume of the part of the locking plate matched with the locking pin can be reduced; the locking plate is positioned below the third connecting shaft, so that the tilting locking assembly matched with the locking plate is reduced, and the structure of the tray is more compact.

Drawings

FIG. 1 is a schematic view of a chair according to the present invention;

FIG. 2 is an exploded view of the chair construction of the present invention;

FIG. 3 is a first schematic view of the connection structure of the base, the tailstock and the footstock according to the present invention;

FIG. 4 is a schematic view of a connection structure of the base, the tailstock and the footstock according to the present invention;

FIG. 5 is a first schematic view of the tilt lock assembly and lift lock assembly of the present invention;

FIG. 6 is a second schematic structural view of the tilt lock assembly and lift lock assembly of the present invention;

fig. 7 is a third schematic structural view of the tilt lock assembly and the lift lock assembly of the present invention.

Reference numerals: 1. a base; 11. a first sliding hole; 12. a bottom simple cover; 13. a second sliding hole; 2. a top seat; 21. a first connection portion; 22. a third sliding hole; 23. a simple top cover; 3. a tailstock; 31. a second connecting portion; 32. a tail plate; 4. an elastic reset component; 41. a pressure spring; 42. a guide member; 5. a tilt lock assembly; 51. a first mounting seat; 52. a locking plate; 53. a latch member; 54. a second blocking portion; 55. a connecting member; 56. a bolt mounting seat; 57. a second mounting seat; 58. pressing a plate; 59. a switch torsion spring; 61. a first connecting shaft; 62. a second connecting shaft; 63. a third connecting shaft; 64. a fourth connecting shaft; 65. a fifth connecting shaft; 71. inclining and facing up the stay wire; 72. lifting a stay wire; 73. a locking portion; 74. a locking spring; 75. a wire-pulling steering sleeve; 76. A first blocking portion.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

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

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the reference position of each component in the embodiment, when the chair is normally installed and used, the front part of the chair is the front end and the front part, and the rear part of the office chair including the position of the chair back is the rear end and the rear part.

A pallet as shown in fig. 1-4, comprising a base 1 for connecting chair legs, a top seat 2 for mounting a chair seat and a tail seat 3 for mounting a chair back; the base 1 with footstock 2 swing joint, the base 1 with tailstock 3 is articulated, the footstock 2 with tailstock 3 is articulated, still including the swing setting the jam plate 52 on the base 1, through the swing angle of control jam plate 52, realize the locking of tailboard 3 swing angle.

In this embodiment, the top seat 2 is integrally formed with two first connecting portions 21 extending downward, the tail block 3 includes two second connecting portions 31, a tail plate 32 is fixedly disposed between the two second connecting portions 31, the base 1 is disposed in front of the tail plate 32, the two second connecting portions 31 are disposed between the two first connecting portions 21, the base 1 is movably connected to the two first connecting portions 21 of the top seat 2 through a first connecting shaft 61, the base 1 is hinged to the two second connecting portions 31 of the tail block 3 through a fourth connecting shaft 64, the tail block 3 is hinged to the first connecting portion 21 of the top seat 2 through a fifth connecting shaft 65, the fourth connecting shaft 64 penetrates through the locking plate 52, the locking plate 52 is hinged to the two second connecting portions 31 through a third connecting shaft 63, and the fourth connecting shaft 64 and the third connecting shaft 63 are disposed between the first connecting shaft 61 and the fifth connecting shaft 65, an elastic reset piece 4 is arranged between the first connecting shaft 61 and the fifth connecting shaft 65, and the third connecting shaft 63 and the fourth connecting shaft 64 are positioned below the first connecting shaft 61 and the fifth connecting shaft 65.

So set up, topple over backward when the human body and exert oneself to the back of the chair for the back of the chair drives tailstock 3 and rotates around fourth connecting axle 64, and the front end of two second connecting portions 31 of tailstock 3 is raised and backward movement, and fourth connecting axle 64 drives footstock 2 upwards and the rearward movement, relative slip takes place for two first connecting portions 21 and the first connecting axle 61 of footstock 2, and elasticity reset assembly 4 pressurized produces the power of reaction and fifth connecting axle 65, and the produced reaction force of elasticity reset assembly 4 can make the human body more level and more smooth in the process of toppling over, avoids appearing the back of the chair rapidly and direct motion to the degree of inclining.

In this embodiment, the two first connecting portions 21 of the top seat 2 are both provided with third sliding holes 22, two ends of the first connecting shaft 61 pass through the two third sliding holes 22, and the first connecting shaft 61 is in sliding fit with the two third sliding holes 22; two sliding shaft sleeves are sleeved on the first connecting shaft 61, the base 1 is located between the two sliding shaft sleeves, and the sliding shaft sleeves are located in the third sliding holes 22 and are in sliding fit.

In this embodiment, the fifth connecting shaft 65 is located in front of the base 1, the first connecting shaft 61 is located at a rear section of the base 1 and above the two second connecting portions 31 of the tailstock 3, and the fourth connecting shaft 64 and the third connecting shaft 63 are located between the first connecting shaft 61 and the fifth connecting shaft 65.

Further preferably, the third connecting shaft 63 is located in front of the fourth connecting shaft 64. The left side and the right side of the base 1 are both provided with inclined first sliding holes 11, the first sliding holes 11 are positioned in front of the fourth connecting shaft 64, the third connecting shaft 63 passes through the two first sliding holes 11 on the base 1, and the first sliding holes 11 are in sliding fit with the third connecting shaft 63; so set up, after tailstock 3 rotated to certain angle, third connecting axle 63 took place to contradict with a continuous first hole 11 that slides, and tailstock 3 will no longer move, so can avoid inclining the risk of turning on one's side that the too big angle that leads to of angle of facing upward, and the while is avoided should incline to face upward the too big angle that leads to all the other subassemblies in the tray and extrude each other to produce the actual effect.

Further preferably, the lowest point of the sliding stroke of the third connecting shaft 63 is higher than the lowest point of the fourth connecting shaft 64.

In this arrangement, the tailstock 3 rotates about the fourth connecting shaft 64, and therefore the start of the tailstock 3 when it tilts is: the tailstock 3 drives the third connecting spindle 63 to move upwards and backwards, so that a complex movement path is avoided, and the stability of the tray is improved.

In this embodiment, the portable electronic device further comprises a top simple cover 23 and a bottom simple cover 12, wherein the top simple cover 23 is fixed on a front side section of the bottom of the top base 2, the bottom simple cover 12 is hinged at the front end of the base 1, and the top simple cover 23 is in sliding fit with the bottom simple cover 12; the fifth connecting shaft 65 is located inside the top simple cover 23.

Preferably, the top simple cover 23 is arc-shaped, the left side and the right side of the top simple cover are bent backwards to cover the top section of the bottom simple cover 12, the left side and the right side of the top simple cover 23 are both protruded inwards to form second connecting shafts 62, the left side and the right side of the bottom simple cover 12 are both provided with inclined second sliding holes 13, and the second connecting shafts 62 extend into the second sliding holes 13 and are movably matched with the second sliding holes 13; in this arrangement, the front ends of the two second connecting portions 31 of the tailstock 3 are shielded by the top simple cover 23; when the top base 1 moves upwards to drive the top simple cover 23 to move, the top simple cover 23 drives the second connecting shaft 62 to slide in the second sliding hole 13, so that the unfolding visual effect is realized.

In this embodiment, as shown in fig. 1 and fig. 2, the elastic restoring assembly 4 includes a compression spring 41 and a telescopic guide 42, two ends of the guide 42 are movably connected to the first connecting shaft 61 and the fifth connecting shaft 65, respectively, and the compression spring 41 is sleeved on the guide 42.

Preferably, a reset sleeve is fixed at one end of the guide member 42, the reset sleeve is sleeved on the fifth connecting shaft 65, a limiting block is fixed at the other end of the guide member 42, an arc-shaped groove is formed in the limiting block, the limiting block is pressed against the first connecting shaft 61 through the arc-shaped groove, the reset sleeve and the limiting block are respectively pressed at two ends of the pressure spring 41, and the guide member 4 is a guide pillar and a guide sleeve which are connected in a plugging manner.

In this embodiment, the pallet further comprises a tilt lock assembly 5 for controlling the tilt angle of the tailstock 3 as shown in figures 5-7, the titling locking assembly 5 is positioned below the lock plate 52 and the third connecting shaft 63, the titling locking assembly 5 comprises a titling pull wire 71, a first mounting seat 51 and a bolt mounting seat 56 which are arranged in the base 1, the bolt mounting seat 56 is provided with a bolt assembly capable of moving left and right, the first mounting seat 51 is provided with a spring assembly capable of moving left and right, the lock plate 52 is provided with a plurality of locking parts 73, the spring assembly can be moved side to side on the first mount 51 by tightening or loosening the tilt cable 71, and then the latch bolt assembly is driven to move left and right on the latch bolt mounting seat 56, and further the latch bolt assembly is matched with the plurality of locking parts 73 to limit the swing of the latch plate 52, and further the tilting angle of the tailstock 3 is controlled through the third connecting shaft 63. With such an arrangement, when the tilting locking assembly 5 is in a locked state, the locking plate 52, the base 1, the top seat 2 and the tail seat 3 form a stable four-bar mechanism, which is different from a three-bar mechanism of a conventional pallet, and the four-bar mechanism runs more smoothly.

Further preferably, the first mounting seat 51 is located below the third connecting shaft 63, and the bolt mounting seat 56 is located in front of the first mounting seat 51; the space in the base 1 is reasonably utilized, so that the heights of all parts in the supporting plate are centralized, and the occupied volume of the tray is effectively reduced.

In this embodiment, the spring assembly includes a sliding rod slidably disposed on the first mounting seat 51, the sliding rod penetrates through the first mounting seat 51, a first blocking portion 76 and a second blocking portion 54 are respectively disposed at two ends of the sliding rod, the first mounting seat is located between the first blocking portion 76 and the second blocking portion 54, the spring assembly further includes a locking spring 74, the locking spring 74 is sleeved on the sliding rod, and the locking spring 74 is located between the second blocking portion 54 and the first mounting seat 51; the bolt assembly comprises a bolt piece 53 and a connecting piece 55, wherein the bolt piece 53 penetrates through the bolt fixing seat 56 and is in sliding fit with the bolt fixing seat, one end of the connecting piece 55 is fixed on one side of the bolt piece 53, the other end of the connecting piece 55 is fixed on a first blocking part 76, and the first blocking part 76 is in movable fit with the inclining pull wire 71.

Further preferably, the connecting member 55 is an elastic member, the second blocking portion 54 is a screw in threaded fit with the other end of the sliding rod, and the locking pin is connected with the locking hole in a plugging manner. The arrangement is that the movement of the connecting member 55 can drive the latch member 53 to move, but when the latch member 53 is not aligned with the locking portion 73, the movement synchronism between the latch member 53 and the locking portion 73 is relatively poor, specifically, when the first blocking portion 76 returns to the initial position, the latch member 53 is in a state of abutting against the locking plate 4, so that the latch member 53 and the locking portion 73 need to be connected by the connecting member 55 to compensate for the position difference in the movement process, and simultaneously, in the rotation process of the locking plate 4, the latch member 53 is aligned with the locking portion 73, and further, under the action of the connecting member 55, the latch member 53 and the locking portion 73 cooperate to complete the locking of the locking plate 4, as described above, the connecting member 55 should be an elastic member; in the present embodiment, the attachment member 55 is a torsion spring. In this embodiment, the locking tongue piece 53 is a locking pin, the locking plate 52 is fan-shaped, the locking portion 73 is a locking hole, a plurality of locking holes are close to one end of the arc-shaped edge of the locking plate 52, and the locking pin is connected with the locking hole in a plugging and pulling manner.

Preferably, the first blocking portion 76 is provided with a first channel through which only the tilting pull wire 71 passes, and a third blocking portion is fixed at one end of the tilting pull wire 71; when the tipping pull wire 71 passes through the first channel, the third blocking part is abutted against the first blocking part 76, so that the tipping pull wire 71 is prevented from passing through the first blocking part 76; further preferably, the third blocking portion is a sphere, a cylinder or other shapes.

In this embodiment, the lifting locking assembly is further provided, the lifting locking assembly is located behind the tilting locking assembly 5, and includes a lifting pull wire 72 and a second mounting seat 57 installed in the base 1, a gas rod fixing hole for installing a lifting gas rod is recessed downwards on the second mounting seat 57, the gas rod fixing hole extends downwards to penetrate through the base 1, two supports are protruded from the top of the second mounting seat 57, a switch shaft is hinged between the supports, a pressing plate 58 is installed on the switch shaft, a switch torsion spring 59 for resetting the pressing plate 58 is arranged between the supports and the pressing plate 58, one end of the pressing plate 58 is installed on the switch shaft, and the other end of the pressing plate 58 is movably connected with the lifting pull wire 72; in such a configuration, the lifting pull wire 72 is pulled to drive one end of the pressing plate 58 to move downwards, the pressing plate 58 presses down the switch of the air rod and presses down the switch torsion spring 59 to store the force, the lifting pull wire 72 is loosened, the switch torsion spring 59 is released to drive the pressing plate 58 and the lifting pull wire 72 to reset, and the air rod switch automatically resets.

Preferably, the pressing plate 58 is provided with a second channel through which the lifting wire 72 can pass, a fourth blocking portion is fixed at one end of the lifting wire 72, and when the lifting wire 72 passes through the second channel, the fourth blocking portion abuts against the pressing plate 58, so that the lifting wire 72 is prevented from passing through the pressing plate 58 continuously. Further preferably, the third blocking portion is a sphere, a cylinder or other shapes.

Further preferably, a pull wire steering sleeve 75 is sleeved on the fourth connecting shaft 64, the lifting pull wire 72 extends forwards from the pressing plate 58 through the lower part of the pull wire steering sleeve 75, and the lifting pull wire 72 extends forwards through the base 1 and the bottom simple cover 12; in the scheme, the lowest end of the movement stroke of the pressing plate 58 is higher than the lowest end of the pull wire steering sleeve 75. So set up, convenience of customers turns to cover 75 through acting as go-between to tray lifting control for the lift is acted as go-between 72 level and smooth, avoids the lift to act as go-between 72 and is changeed the low angle bending of department and influence the life of tray at the turning.

A chair comprising a tray as described above. The multifunctional chair also comprises supporting legs arranged on the base 1, a chair back arranged on the tailstock 3 and a chair seat arranged on the top seat 3.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims (10)

1. A pallet, characterized by: including base (1) that is used for installing the chair foot, footstock (2) that are used for installing the seat support and tailstock (3) that are used for installing the back of the chair, be equipped with downwardly extending's first connecting portion (21) on footstock (2), tailstock (3) is including second connecting portion (31) that extend forward, base (1) through first connecting axle (61) with first connecting portion (21) swing joint of footstock (2), base (1) through fourth connecting axle (64) with second connecting portion (31) of tailstock (3) are articulated, tailstock (3) through fifth connecting axle (65) with first connecting portion (21) of footstock (2) are articulated, first connecting axle (61) is located fifth connecting axle (65) rear, fourth connecting axle (64) are located first connecting axle (61) with between fifth connecting axle (65), the fourth connecting shaft (64) is located below the first connecting shaft (61) and the fifth connecting shaft (65).

2. A pallet as claimed in claim 1, wherein: the number of the first connecting portions (21) is two, the number of the second connecting portions (31) is two, the base (1) is located between the two second connecting portions (31), and the two second connecting portions (31) are located between the two first connecting portions (21).

3. A pallet as claimed in claim 2, wherein: still including the swing setting be in jam plate (52) in base (1), fourth connecting axle (64) run through jam plate (52), it has third connecting axle (63) to run through on jam plate (52), the both ends of third connecting axle (63) are connected with two second connecting portion (31) of tailstock (3), realize jam plate (52) and tailstock (3) simultaneous movement, third connecting axle (63) run through base (1) and rather than sliding connection.

4. A pallet as claimed in claim 3, wherein: the fourth connecting shaft (64) and the third connecting shaft (63) are located between the first connecting shaft (61) and the fifth connecting shaft (65), the third connecting shaft (63) is located below the first connecting shaft (61) and the fifth connecting shaft (65), and the third connecting shaft (63) is located in front of the fourth connecting shaft (64).

5. A pallet as claimed in claim 3, wherein: still including inclining and facing upward locking Assembly (5) that is located the below of third connecting axle (63), including inclining and facing upward first mount pad (51) and spring bolt mount pad (56) on acting as go-between (71) and the installation base, install the spring unit that can move about on first mount pad (51), install the spring bolt subassembly that can move about on spring bolt mount pad (56), a plurality of sticking department (73) have been seted up on the jam plate, can make through taut or loosening the inclining and facing upward act as go-between spring unit moves about on first mount pad, and then drives the spring bolt spare and move about on spring bolt mount pad (56), and then with a plurality of sticking department cooperation restriction jam plate (52) swings, and then through the angle of inclining and facing upward of third connecting axle (63) control tailstock (3).

6. A pallet as claimed in claim 3, wherein: the lifting locking assembly comprises a lifting pull wire (72) and a pressing plate hinged in the base (1), and the pressing plate (58) is movably connected with the lifting pull wire (72); the fourth connecting shaft (64) is sleeved with a stay wire steering sleeve (75), and the lifting stay wire (72) extends forwards from the lower part of the pressing plate (58) through the stay wire steering sleeve (75).

7. A pallet as claimed in claim 1, wherein: the simple and easy cover in footstock (2) front end fixedly connected with top (23), base (1) front end is articulated to have end simple and easy cover (12), the simple and easy cover in top (23) covers end simple and easy cover (12) and swing joint, the simple and easy cover in top (23) covers end simple and easy cover (12) swing joint.

8. A pallet as claimed in claim 7, wherein: the top simple cover (23) is provided with a second connecting shaft (62) in a protruding mode, the bottom simple cover (12) is provided with a second sliding hole (13), and the second connecting shaft (62) is located in the second sliding hole (13).

9. A pallet as claimed in claim 1, wherein: first connecting axle (61) with be equipped with elasticity between fifth connecting axle (65) and reset piece (4), elasticity resets piece (4) and includes pressure spring (41) and telescopic guide (42), and the both ends of guide rotate respectively and install on first connecting axle (61) and fifth connecting axle (65), pressure spring (41) are located between first connecting axle (61) and fifth connecting axle (65) and the cover is established on guide (42).

10. A chair, characterized in that: comprising a tray as claimed in any one of the preceding claims 1 to 9.

Images