CN112841967A

CN112841967A - Self-loading tray and chair

Info

Publication number: CN112841967A
Application number: CN202011636995.2A
Authority: CN
Inventors: 王江林; 王郑兴; 鲍家华
Original assignee: Henglin Home Furnishings Co Ltd
Current assignee: Henglin Home Furnishings Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-05-28

Abstract

The invention relates to a self-loading tray and a chair, which comprise a base for connecting chair legs, a top seat for mounting a chair seat and a tailstock for mounting a chair back, wherein the top seat is provided with a pair of connecting parts, the tailstock is hinged with the rear part of the base through a tailstock rotating shaft, the tailstock is hinged with the connecting part of the top seat through a hinged shaft, the top seat is movably connected with the base through a first limiting shaft and a second limiting shaft, the first limiting shaft is positioned at the front part of the connecting part of the top seat and is in inclined sliding connection with the base, the second limiting shaft is positioned at the rear part of the base and is in inclined sliding connection with the connecting part, and a reset spring is arranged between the first limiting shaft and the second limiting shaft; according to the technical scheme, the chair seat and the chair back are supported more powerfully through the tailstock rotating shaft, the first limiting shaft and the second limiting shaft compared with the traditional three-link mechanism.

Description

Self-loading tray and chair

Technical Field

The invention relates to the field of furniture, in particular to a self-loading tray and a chair.

Background

When the chair is used in daily office, the back of a human body is usually away from the backrest, most of the weight of the human body directly acts on the seat and the chair back, the three-connecting rod or the four-connecting rod is usually used for connecting all parts of the chair base in the traditional chair, the seat and the chair back only transmit force to the supporting piece of the chair through three points or four points, and the chair often fails to work when in use, so that accidents are caused.

The chair comprises a fixed seat fixedly connected with a seat support rod, a first base fixedly connected with a seat and a second base fixedly connected with a chair 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; when the tilting locking assembly is in a locking state through the technical scheme, the fixed seat, the first base and the second base form a stable three-link mechanism, all the assemblies are connected through the three-link structure, and potential safety hazards exist in use.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a self-loading base and a chair, wherein the components are not only connected by a connecting rod, but also are more stably operated by a double-sliding-groove limiting manner, and the locking mechanism and the backrest are separately connected to the seat so as to be more uniformly stressed and have a higher safety factor.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a self-carrying tray, is including the tailstock that is used for connecting the base of chair foot, is used for installing the footstock of seat support and is used for installing the back of the chair, be equipped with a pair of connecting portion on the footstock, the tailstock pass through the tailstock pivot with the rear portion of base is articulated, the tailstock pass through the articulated shaft with the footstock connecting portion are articulated, the footstock through first spacing axle and the spacing axle of second with base swing joint, first spacing location of axle in the front portion of footstock connecting portion and with base slope sliding connection, the spacing location of axle of second the rear portion of base and with connecting portion slope sliding connection is equipped with reset spring between first spacing axle and the spacing axle of second.

Preferably, the base is provided with a first inclined limiting sliding hole, the first limiting shaft slides in the first limiting sliding hole, two ends of the first limiting shaft are axially fixed with the top seat, the connecting part of the top seat is provided with a second inclined limiting sliding hole, and two ends of the second limiting shaft penetrate through the base and are in sliding fit with the second limiting sliding hole.

Preferably, two ends of the first limiting shaft are connected with the base in a sliding mode in an inclined mode through rollers or bearings, and two ends of the second limiting shaft are connected with the connecting portion in a sliding mode in an inclined mode through rollers or bearings.

Preferably, the tailstock further comprises a locking mechanism for locking the rotation angle of the tailstock relative to the base; locking mechanism includes first locking plate, second locking plate and locking round pin, first locking plate fixed connection be in on the footstock, first locking plate with second locking plate is articulated, the locking round pin with base sliding connection, be equipped with the locking groove on the second locking plate, the locking groove with the locking round pin plug is connected, the locking round pin inserts during the locking inslot, the footstock with by fixed unable removal between the base.

Preferably, a third sliding limiting hole is formed in the second locking plate, and the second limiting shaft penetrates through the third sliding limiting hole.

Preferably, the third slippage limiting hole is a kidney-shaped hole.

Preferably, the locking mechanism further comprises a locking block fixed on the base, and the locking pin penetrates through the locking block and is connected with the locking block in a sliding mode.

Preferably, the locking mechanism further comprises a locking control rod, a locking stay wire and a locking spring, the locking stay wire is connected with the locking control rod, the locking control rod is connected with the base in a sliding mode, the locking spring is sleeved on the locking control rod and used for resetting the locking control rod, and the locking control rod and the locking pin are connected and move together.

Preferably, the base is provided with a switch mechanism for controlling the air lever.

A chair comprising a self-supporting tray as claimed in any one of the preceding claims.

According to the technical scheme, the chair seat and the chair back are supported more powerfully through the tailstock rotating shaft, the first limiting shaft, the second limiting shaft and the hinged shaft, the movement direction of the chair seat is limited only through one sliding groove or two sliding grooves or two.

Drawings

FIG. 1 is a schematic view of a self-supporting pallet in its entirety;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is an exploded view of a self-supporting pallet;

fig. 4 is a schematic view of the locking mechanism in the embodiment.

Description of the drawings: a base; 1. a first limiting sliding hole; 11. a tailstock rotating shaft; 13. a first limit shaft; 14. a second limit shaft; 2. a tailstock; 21. hinging a shaft; 3. a top seat; 31. a second limiting sliding hole; 32. a connecting portion; 4. a reset mechanism; 41. a limiting block; 42. a reset sleeve; 43. a return spring; 5. a control mechanism; 51. a first lock plate; 52. a second lock plate; 53. a third slip limiting hole; 54. a locking groove; 55. a locking pin; 56. a locking block; 57. pressing a plate; 58. a locking pull wire; 59. a switch pull wire; 6. mounting a plate; 61. an installation part; 62. a locking control lever; 63. a locking limiting block; 64. a torsion spring; 65. a switch fixing plate; 66. a return torsion spring; 67. a locking spring;

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 invention and are not to be construed as limiting the invention.

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.

As shown in fig. 1-4, a self-loading tray includes a base 1 for controlling and supporting, a tailstock 2 for mounting a backrest, and a top seat 3 for mounting a cushion, wherein an opening is provided at one end of the tailstock 2, a part of the base 1 is located between the openings of the tailstock 2, a tailstock rotating shaft 12 is provided between the openings in a rotating fit manner, the tailstock rotating shaft 12 penetrates through the rear portion of the base 1 and is in rotating fit, a first inclined limiting sliding hole 11 is provided at the front portion of the base 1, the first limiting sliding hole 11 penetrates through the base, the first limiting sliding hole 11 is located outside the tailstock 2, a pair of connecting portions 32 symmetrical to each other is bent on the top seat 3, the open end of the tailstock 2 and the base 1 are located between the connecting portions 32, a second inclined limiting sliding hole 31 is provided at the rear portion of the connecting portion 32, the second limit sliding hole 31 penetrates through the connecting parts 32, a first limit shaft 13 is arranged between the connecting parts 32 in a rotating fit manner, the first limiting shaft 13 penetrates through the first limiting sliding hole 11, a first sliding shaft sleeve is sleeved on the first limiting shaft 13, the first sliding shaft sleeves are positioned in the second limiting sliding holes 11 and are in sliding fit, the first sliding shaft sleeves are symmetrically arranged, a second limit shaft 14 is arranged at the rear part of the base 1 in a penetrating way, two ends of the second limit shaft 14 are respectively positioned in the second limit sliding holes 31, two ends of the third rotating shaft 14 are respectively sleeved with a second sliding shaft sleeve, the second sliding shaft sleeves are positioned in the second limiting sliding holes 31 and are in sliding fit, the open ends of the second limit shaft 14 and the tailstock 2 are positioned at the same side of the base 1, and the open end of the tailstock 2 is hinged with the connecting part 32 through a hinge shaft 21; through the matching of the first limiting sliding hole 11 and the second limiting sliding hole 31 with each part, the top seat 3 is more stable in movement, more force points are provided, and the stress is more uniform;

a reset mechanism 4 is arranged between the first limit shaft 13 and the second limit shaft 14, and a control mechanism 5 is arranged in the base of the base 1;

the reset mechanism 4 comprises a pair of reset sleeves 42 and a limiting block 41 which are symmetrical to each other, the reset sleeves 42 are sleeved on the first limiting shaft 13, an arc-shaped groove is formed in one end of the limiting block 41 and is pressed on the fourth rotating shaft 14, and a guide body is arranged between the reset sleeves 42 and the limiting block 41; the guide body comprises a guide sleeve and a guide rod, the guide sleeve is fixed on the reset sleeve 42, the guide rod is fixed on the limiting block 41, a reset spring 43 is sleeved on the guide body, and two ends of the reset spring 43 are respectively pressed against the limiting block 41 and the reset sleeve 42;

the control mechanism 5 comprises a switch mechanism, a locking mechanism and a mounting plate 6 fixed in the base 1;

the locking mechanism comprises a first locking plate 51 fixed on the top seat 3, a second locking plate 52 is hinged on the first locking plate 51, a third sliding limiting hole 53 is formed in the second locking plate 52, a locking part is protruded on one side of the second locking plate 52, a plurality of locking grooves 54 are formed in the locking part, locking pins 55 are inserted and connected in the locking grooves 54 in a pulling mode, and the angle and the state of the backrest are controlled through the pulling mode of the locking pins 55 and the locking grooves 54;

a locking block 56 is fixed in the base, the locking pin 55 is arranged on the locking block 56 in a penetrating way, a mounting part 61 is fixed on the mounting plate 6, a locking limit part is arranged on the mounting part 61 in a protruding way, a locking control rod 62 is arranged on the locking limiting part in a penetrating way, a locking limiting block 63 is arranged on one end of the locking control rod 62 in a protruding way, a locking nut is fixed at the other end of the locking control rod 62, a locking spring 67 is arranged between the locking nut and the locking limiting part, the locking spring 67 is sleeved on the locking control rod 62, the locking mechanism further comprises a torsion spring 64 and a locking pull wire 58, one end of the torsion spring 64 is fixed on the locking pin 55, the other end of the torsion spring 64 is fixed on the locking limit block 63, one end of the locking pull wire 58 is movably connected to the locking limiting block 63, and the other end of the locking pull wire 58 penetrates through the base 1 and the tailstock 2;

the switch mechanism is including fixing switch fixed plate 65 on the mounting panel 6, it has clamp plate 57 to articulate on the switch fixed plate 65, mounting panel 6 with be equipped with reset torsion spring 66 before clamp plate 57, reset torsion spring 66's both ends respectively with clamp plate 57 with mounting panel 6 is contradicted, swing joint has the switch to act as go-between 59 on the clamp plate 57, the switch acts as go-between 59 extends and runs through base 1, the gas pole fixed orifices has been seted up on base 1, the gas pole fixed orifices runs through mounting panel 6 is close to one side of clamp plate 57.

The using method comprises the following steps:

when the backrest angle is adjusted, the locking pull wire 58 is pulled to drive the locking limiting block 63 to move, the locking limiting block 63 drives the locking control rod 62 to move, the locking control rod 62 drives the locking nut to move, the locking nut compresses the locking spring 67, the locking limiting block 63 drives the torsion spring 64 to move, the torsion spring 64 drives the locking pin 55 to move, and the locking pin 5 is separated from the locking groove 54;

adjusting the angle of the tailstock 2 to enable the tailstock 2 to rotate around the tailstock rotating shaft 12, driving the footstock 3 to move through 21 by the tailstock 2, driving the first limiting shaft 13 to slide along the first limiting sliding hole 11 by the footstock 3, limiting through the second limiting sliding hole 31 and the second limiting shaft 14 when the footstock 3 moves, driving the first locking plate 51 to move by the footstock 3, driving the second locking plate 52 to slide along the second limiting shaft 14 through the third sliding limiting hole 53 by the first locking plate 51, driving the second locking plate 52 to drive the first limiting sliding hole 11 to be matched with the first limiting shaft 13 and limiting through the second limiting sliding hole 31 and the second limiting shaft 14, thereby improving the stability of the footstock 3 during moving;

when the first limiting shaft 13 slides along the first limiting sliding hole 11, the first limiting shaft 13 drives the guide piece to move, and the guide piece compresses the return spring 43;

after the backrest is adjusted to a corresponding position, the locking pull wire 58 is loosened, the locking spring 67 pushes the locking nut to reset, the locking nut drives the locking control rod 62 to reset, the locking control rod 62 drives the locking limiting block 63 to reset, the locking limiting block 63 drives the torsion spring 64 to reset, and the torsion spring 64 drives the locking pin 55 to be inserted into the other locking groove;

when the backrest is reset, the locking stay wire 58 is pulled to separate the locking pin 55 from the locking groove 54 or the locking hole, the spring 43 is released to drive the guide member to reset, the guide member drives the first limiting shaft 13 to reset, the first limiting shaft 13 drives the top seat 3 to reset, and the top seat 3 drives the tailstock 2 to reset through the hinge shaft 21;

when the air lever is adjusted, the switch pull wire 59 is pulled to drive the pressure plate 57 to rotate around the hinged position, the reset torsion spring 66 compresses to store force, and the other end of the pressure plate 57 presses down the switch of the air lever, so that the height of the air lever is adjusted; after the height is adjusted to the suitable height, the switch pull wire 59 is loosened, and the reset torsion spring 66 drives the pressure plate 57 to reset.

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 invention. 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

1. The utility model provides a self-carrying tray, is including base (1) that is used for connecting the chair foot, footstock (3) that are used for installing the seat support and tailstock (2) that are used for installing the back of the chair, be equipped with a pair of connecting portion (32) on footstock (3), tailstock (2) through tailstock pivot (12) with the rear portion of base (1) is articulated, tailstock (2) through articulated shaft (21) with footstock (3) connecting portion (32) are articulated, its characterized in that: footstock (3) through first spacing axle (13) and second spacing axle (14) with base (1) swing joint, first spacing axle (13) be located footstock (3) connecting portion (32) the front portion and with base (1) slope sliding connection, the spacing axle of second (14) be located the rear portion of base (1) and with connecting portion (32) slope sliding connection is equipped with reset spring (43) between first spacing axle (13) and the spacing axle of second (14).

2. A self-carrying pallet as claimed in claim 1, wherein: be equipped with the first spacing hole (11) that slides of slope on base (1), first spacing axle (13) slide and its both ends and footstock (3) axial fixity in first spacing hole (11) that slides, be equipped with the spacing hole (31) that slides of second of slope on connecting portion (32) of footstock (3), the both ends of the spacing axle of second (14) are passed base (1) and with the spacing hole (31) sliding fit of sliding of second.

3. A self-carrying pallet as claimed in claim 1, wherein: the two ends of the first limiting shaft (13) are connected with the base (1) in an inclined sliding mode through rollers or bearings, and the two ends of the second limiting shaft (14) are connected with the connecting portion (32) in an inclined sliding mode through rollers or bearings.

4. A self-carrying pallet as claimed in claim 1, wherein: the tailstock (2) is arranged on the base (1) and comprises a locking mechanism used for locking the rotation angle of the tailstock (2) relative to the base; locking mechanism includes first locking plate (51), second locking plate (52) and locking round pin (55), first locking plate (51) fixed connection be in on footstock (3), first locking plate (51) with second locking plate (52) are articulated, locking round pin (55) with base (1) sliding connection, be equipped with locking groove (54) on second locking plate (52), locking groove (54) with locking round pin (55) plug is connected, locking round pin (55) insert when in locking groove (54), footstock (3) with be fixed unable removal between base (1).

5. A self-carrying pallet as claimed in claim 4, wherein: and a third sliding limiting hole (53) is formed in the second locking plate (52), and the second limiting shaft (14) penetrates through the third sliding limiting hole (53).

6. A self-carrying pallet as claimed in claim 5, wherein: the third sliding limiting hole (53) is a kidney-shaped hole.

7. A self-carrying pallet as claimed in claim 3, wherein: the locking mechanism further comprises a locking block (56), the locking block (56) is fixed on the base (1), and the locking pin (55) penetrates through the locking block (56) and is connected with the locking block in a sliding mode.

8. A self-carrying pallet as claimed in claim 3, wherein: locking mechanism still includes locking control lever (62), locking stay wire (58) and locking spring (67), locking stay wire (58) with locking control lever (62) are connected, locking control lever (62) with base (1) sliding connection, locking spring (67) cover is established be used for on locking control lever (62) the reseing of locking control lever (62), locking control lever (62) with connect between locking round pin (55) and remove together.

9. A self-carrying pallet as claimed in claim 1, wherein: and a switch mechanism for controlling the air rod is arranged on the base (1).

10. A chair, characterized in that: a self-carrying pallet comprising a pallet as claimed in any one of claims 1 to 9.