CN217885554U - Dining chair - Google Patents

Abstract

The utility model relates to a dining chair, including the bottom bracket, preceding bracing piece, the back bracing piece, seat subassembly and locking device, the seat subassembly includes back board and seat pole at least, the bottom of back board is connected with the rear portion of seat pole, the bottom of preceding bracing piece, both in the top of bottom bracket and the bottom three of back bracing piece rotationally connect and another person in the three rotationally with aforementioned one in the two rotationally be connected, perhaps rotationally link together each other between the three, the top of preceding bracing piece rotationally is connected with the seat subassembly, but back board and back bracing piece relative slip ground are connected, locking device slides back board and back bracing piece and locks, when the bracing piece slides behind the back board relatively, can make the relative bottom bracket of seat pole adjust in the direction of height. The utility model discloses a high regulatory function of dining chair, and simple structure, it is easy and simple to handle with the locking process to adjust, has greatly promoted the convenience of using, and overall structure stability is good.

Description

Dining chair

Technical Field

The utility model belongs to the technical field of the dining chair, concretely relates to children's dining chair.

Background

Child dinning chairs are special seats for eating and seating of children of low age, and are widely used at present. The height of the common child dining chair can not be adjusted generally, the structure of the child dining chair which can not be adjusted is stable, but the child dining chair is inconvenient to use and poor in applicability. In order to adapt to the height change of children in the growth process and adapt to the difference of the dining table height in different dining environments, the conventional child dining chair usually has the height-adjustable function.

Height-adjustable's children dining chair's structure is various, corresponding altitude mixture control principle also diverse, at present, its structure of common height-adjustable's children dining chair is mainly by dining chair frame, the seat subassembly etc. is constituteed, the seat subassembly is through its both sides integral erection on dining chair frame, mutual sliding fit realizes altitude mixture control between seat subassembly and the dining chair frame, but the process of adjusting is comparatively loaded down with trivial details, the both sides that need both hands to operate the seat subassembly are adjusted and operations such as locking, and overall structure is comparatively complicated, there is very big limitation in the use. It is always the objective of those skilled in the art to make the adjustment of the child dining chair convenient enough and the whole structure stable and simple enough.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

Disclosure of Invention

The utility model aims at providing a dining chair specifically is a height-adjustable's children dining chair for solve current children dining chair altitude mixture control complex operation and the complicated scheduling problem of structure.

In order to achieve the purpose, the utility model adopts the technical proposal that:

a dining chair having an unfolded state, said dining chair comprising a base frame, a front support bar, a rear support bar, a seat assembly and a locking device, said seat assembly comprising at least a back panel extending in an up-down direction and a seat bar extending in a front-to-back direction in the unfolded state, the bottom of said back panel being connected to the rear of said seat bar; two of the bottom of the front support rod, the top of the bottom bracket and the bottom of the rear support rod are rotatably connected, and the other of the bottom of the front support rod, the top of the bottom bracket and the bottom of the rear support rod is rotatably connected with one of the bottom bracket and the bottom of the rear support rod, or the three are rotatably connected with each other, and the top of the front support rod is rotatably connected with the seat component; the back board and the back support rod are connected in a relatively sliding mode, the locking device enables the back board and the back support rod to be locked in a sliding mode, and when the back board slides relative to the back support rod, the seat rod can be adjusted in the height direction relative to the bottom support frame.

Preferably, the back board has a bottom rotatably connected to a rear portion of the seat board.

Preferably, the seat assembly further comprises armrest assemblies disposed at both sides of the seat bar, the armrest assemblies are connected between the backrest plate and the seat bar, and the top of the front support bar is rotatably connected with the seat bar or the armrest assemblies.

Further preferably, the handle assembly comprises a first handle bar and a second handle bar, one end of the first handle bar is rotatably connected with one end of the second handle bar, the other end of the first handle bar is rotatably connected with the seat bar, and the other end of the second handle bar is rotatably connected with the back plate.

Further preferably, the top of the front support rod is rotatably connected to one of the seat bar, the first grab bar and the second grab bar.

Preferably, the bottom bracket comprises a first bottom bracket and a second bottom bracket, the top of the first bottom bracket is rotatably connected with the top of the second bottom bracket, the bottom of the front supporting rod is rotatably connected with at least one of the first bottom bracket, the second bottom bracket and the rear supporting rod, and the bottom of the rear supporting rod is rotatably connected with at least one of the first bottom bracket, the second bottom bracket and the front supporting rod.

Further preferably, the top of the first bottom bracket, the top of the second bottom bracket, the bottom of the front support rod, and the bottom of the rear support rod are rotatably connected through the same rotation point, and the top of the front support rod is rotatably connected with the seat rod.

Preferably, the rear supporting rod comprises vertical rods positioned on two sides and a cross rod connected between the vertical rods on the two sides, and the bottom of each vertical rod is rotatably connected with the bottom bracket; the back board has sliding guide part in the back part, and the cross bar is set inside the sliding guide part and capable of sliding relatively to the sliding guide part.

Further preferably, the sliding guide portion is provided in plural, and the plural sliding guide portions are distributed along the width direction of the back plate, and the plural sliding guide portions can improve the stability of the back plate in the sliding adjustment process.

Further preferably, the locking device comprises a locking member and a locking hole formed in the rear portion of the back plate, wherein when the back plate is slidably locked with respect to the rear supporting rod, the locking member passes through the cross bar and is inserted into the locking hole, or the locking member is inserted into the locking hole and is supported below the cross bar; the back board is provided with a plurality of lock holes, the lock holes are distributed along the vertical direction of the back board, and the lock holes enable the back board to be locked at different heights.

Preferably, the dining chair still has folded condition, works as the dining chair be in folded condition, back bracing piece, preceding bracing piece, seat subassembly and the end support between draw in each other, works as the dining chair be in unfolded condition, back bracing piece, preceding bracing piece, seat subassembly and the end support between expand each other, just the back board can be relative back bracing piece slide adjusting.

Preferably, when the dining chair is in the folded state, the seat post, backrest panel and armrest assembly of the seat assembly are folded.

Because of the application of the technical scheme, compared with the prior art, the utility model has the advantages of it is following:

the utility model discloses a mutually supporting between bottom bracket, preceding bracing piece, back bracing piece and the seat subassembly, realized the altitude mixture control function of dining chair, and dining chair simple structure, solved the problem that seat subassembly and bottom bracket cooperation slip process are complicated among the traditional dining chair, adjust and the locking process is easy and simple to handle, has greatly promoted the convenience of use, and overall structure stability is good.

Drawings

Figure 1 is a schematic perspective view of the chair of the first embodiment in an unfolded position with the seat assembly adjusted to an uppermost position;

figure 2 is a schematic side view of the chair of the first embodiment in an unfolded position with the seat assembly adjusted to an uppermost position;

figure 3 is a schematic perspective view of the chair in accordance with the first embodiment in an unfolded position with the seat assembly adjusted to an intermediate position;

figure 4 is a schematic side elevation view of the chair in accordance with the first embodiment in its unfolded state with the seat assembly adjusted to an intermediate position;

figure 5 is a perspective view of the chair in the first embodiment in an unfolded position with the seat assembly adjusted to the lowermost position;

figure 6 is a side elevational view of the chair in the unfolded position with the seat assembly adjusted to its lowermost position in accordance with the first embodiment;

figure 7 is a perspective view of the dining chair in a folded state according to the first embodiment;

figure 8 is a side elevational view of the dining chair in its folded condition in accordance with the first embodiment;

figure 9 is a schematic diagram of the dining chair of the first embodiment;

figure 10 is a schematic diagram of the dining chair of the second embodiment;

figure 11 is a schematic structural diagram of a dining chair in accordance with the third embodiment;

FIG. 12 is a schematic illustration of a dining chair in accordance with the fourth embodiment;

figure 13 is a diagrammatic illustration of the dining chair in accordance with the fifth embodiment;

figure 14 is a schematic diagram of a sixth embodiment of the dining chair.

In the drawings above: 1. a bottom bracket; 11. a first bottom bracket; 12. a second bottom bracket; 2. a seat assembly; 21. a slide guide portion; 22. a back board; 23. a sitting bar; 24. an armrest assembly; 241. a first grab rail; 242. a second grab rail; 3. a front support bar; 4. a rear support bar; 41. a vertical rod; 42. a cross bar; 5. a locking device; 51. a locking member; 52. and (6) locking the hole.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

a dining chair, as shown in fig. 1-9, comprising a bottom bracket 1, a seat assembly 2, a front support bar 3, a rear support bar 4 and a locking device 5, the front support bar 3 being connected between the seat assembly 2 and the bottom bracket 1, and the front support bar 3 being used to support the seat assembly 2, one end of the rear support bar 4 being connected to the bottom bracket 1, and the rear support bar 4 being slidably connected to the seat assembly 2, the locking device 5 being used to slidably lock the seat assembly 2 to the rear support bar 4, in particular:

the top of the bottom bracket 1, the bottom of the front support rod 3 and the bottom of the rear support rod 4 are rotatably connected through the same rotating point, the top of the front support rod 3 is rotatably connected with the seat assembly 2, the rear support rod 4 is slidably connected with the seat assembly 2, and the locking device 5 is used for slidably locking the seat assembly 2 and the rear support rod 4.

The bottom bracket 1 comprises a first bottom bracket 11 and a second bottom bracket 12, wherein the top of the first bottom bracket 11 is rotatably connected with the top of the second bottom bracket 12, specifically: first bottom bracket 11, second bottom bracket 12 all adopt the U-shaped pole, and the one end of first bottom bracket 11, the one end interconnect of second bottom bracket 12, and the other end of first bottom bracket 11, the other end interconnect of second bottom bracket 12 make the stable support that forms of the bottom of dining chair.

The seat assembly 2 includes a slide guide 21, a back plate 22, a seat rod 23, and an armrest assembly 24, the slide guide 21 is disposed at the rear of the back plate 22, the bottom of the back plate 22 is rotatably connected with the rear of the seat rod 23, and the armrest assembly 24 is connected between the back plate 22 and the seat rod 23, specifically:

the slide guide 21 is used to form a sliding fit with the rear support 4, and in this embodiment: the slide guide 21 is provided with a slide guide 21 in the vertical direction at the rear of a back plate 22, and a slide guide groove is formed between the slide guide 21 and the back plate 22. The slide guide portion 21 may be provided in plural, the plural slide guide portions 41 are distributed along the width direction of the back board 22, and the provision of the plural slide guide portions 21 may improve the stability of the seat assembly 2 during the slide adjustment, in the present embodiment: the slide guide portions 21 are provided in two, and the two slide guide portions 21 are symmetrically distributed in the width direction of the backboard 22.

The armrest assembly 24 is disposed at both sides of the seat assembly 2, that is, the armrest assembly 24 is disposed at opposite sides of the seat post 23, the armrest assembly 24 includes a first armrest rod 241 and a second armrest rod 242, one end of the first armrest rod 241 is rotatably connected with one end of the second armrest rod 242, the other end of the first armrest rod 241 is rotatably connected with the seat post 23, and the other end of the second armrest rod 242 is rotatably connected with the back plate 22. Of course, in some embodiments, the armrest assembly 24 may not be provided.

The bottom of the front support rod 3 is rotatably connected with the top of the bottom bracket 1, and the top of the front support rod 3 is rotatably connected with the seat assembly 2, in the embodiment: both sides of end support 1 all are provided with preceding bracing piece 3, the bottom of preceding bracing piece 3, the top of first end support 11, the top of second end support 12 is through same turning point rotationally connecting, the top of preceding bracing piece 3 is rotationally connected with the front portion of sitting pole 23, specifically, the front portion of sitting pole 23 is provided with the connecting rod along its width direction, the connecting rod is rotationally connected with the top of preceding bracing piece 3, preceding bracing piece 3 can support sitting pole 23 throughout at the slide adjusting in-process, the stability of dining chair has been improved.

The bottom of the rear support bar 4 is rotatably connected with the top of the bottom bracket 1, in this embodiment: the bottom of the rear support rod 4 is rotatably connected with the top of the first bottom bracket 11, the top of the second bottom bracket 12 and the bottom of the front support rod 3 through the same rotating point. The seat assembly 2 and the rear support bar 4 are connected in a relatively slidable manner, specifically, the backrest plate 22 and the rear support bar 4 are connected in a relatively slidable manner, in the embodiment: the rear supporting rod 4 comprises a vertical rod 41 and a cross rod 42 which are positioned at two sides, the vertical rods 41 are connected with two sides of the bottom bracket 1, and the bottom of each vertical rod 41 is rotatably connected with the top of the first bottom bracket 11, the top of the second bottom bracket 12 and the bottom of the front supporting rod 3 through the same rotating point; the cross bar 42 is connected between the vertical bars 41 at two sides, specifically, the cross bar 42 is connected between the tops of the vertical bars 41 at two sides, and the cross bar 42 is located in a sliding guide groove formed between the sliding guide portion 21 of the seat assembly 2 and the backrest plate 22, so that the cross bar 42 can slide relative to the backrest plate 22, and when the backrest plate 22 slides relative to the cross bar 42 of the rear supporting rod 4, the seat bar 23 can be driven to adjust in the height direction relative to the bottom bracket 1, thereby realizing the height adjusting function of the dining chair.

The locking device 5 is used to slidingly lock the back plate 22 with the rear support bar 4, in particular: the locking device 5 comprises a locking piece 51 and a plurality of locking holes 52, wherein the locking holes 52 are formed at the rear part of the seat assembly 2, in particular, at the rear part of the backrest plate 22, the plurality of locking holes 52 can be formed, the plurality of locking holes 52 are distributed along the up-down direction of the backrest plate 22, and the plurality of locking holes 52 can enable the backrest plate 22 to be locked at different heights, namely, the seat rod 23 is locked at different heights; when the back board 22 is slide-locked with respect to the rear support bar 4, the locking piece 51 passes through the cross bar 42 and is inserted into the lock hole 52, or the locking piece 51 is inserted into the lock hole 52 and is supported below the cross bar 42, in the present embodiment: the cross bar 42 is provided with a through hole, and the locking member 51 passes through the through hole of the cross bar 42 and is inserted into the locking hole 52 for locking.

Of course, in some embodiments, other locking means for locking the rotation between the bottom of the front support bar 3, the bottom of the rear support bar 4 and the top of the bottom bracket 1 may be provided, or other locking means for locking the rotation between the top of the front support bar 3 and the seat assembly 2 may be provided, to improve the stability and safety of the adjustment process of the dining chair.

The chair of this embodiment has an unfolded position and a folded position, when the chair is in the unfolded position, as shown in figures 1-8, the rear support rod 4, the front support rod 3, the seat assembly 2 and the bottom bracket 1 are unfolded, and the backrest plate 22 can be slidably adjusted relative to the rear support rod 4 to drive the seat rod 23 to be adjusted in height relative to the bottom bracket 1; when the dining chair is in a folded state, the rear support rod 4, the front support rod 3, the seat assembly 2 and the bottom bracket 1 are folded, and the seat rod 23, the backrest plate 22 and the armrest assembly 24 of the seat assembly 2 are also folded, so that the dining chair is convenient to carry.

In the working process of the embodiment:

when the dining chair is in the unfolded state, the seat assembly 2 can be adjusted in a sliding manner relative to the rear support rod 4, and the sliding adjustment process specifically comprises the following steps: when the seat assembly 2 is at the highest position in the height direction, as shown in fig. 1 and 2, the locking device 5 locks the rear support bar 4 at the top of the slide guide 41, when the seat assembly 2 is slidably adjusted from the highest position to the lowest position in the height direction, as shown in fig. 3 and 4, the locking device 5 is unlocked, the back board 22 is slid with respect to the rear support bar 4, the seat bar 23 is caused to be adjusted in the height direction with respect to the bottom bracket 1, and the bottom of the front support bar 3 is rotated around the top of the bottom bracket 1, and when the seat assembly 2 is at the lowest position in the height direction, as shown in fig. 5 and 6, the locking device 5 locks the rear support bar 4 at the bottom of the slide guide 41, completing the height adjustment of the seat assembly 2 by sliding, the process is simple, and the operation is convenient;

when the dining chair is converted from the unfolded state to the folded state, the seat assembly 2 is adjusted to the lowest position in a sliding manner, the rear supporting rod 4 and the backrest plate 22 are rotated anticlockwise, the rear supporting rod 4 and the backrest plate 22 are close to the seat rod 23, the first handrail rod 241 and the second handrail rod 242 are driven to close to each other, and the front supporting rod 3 is driven to rotate to close to the bottom bracket 1;

when the dining chair is in the folded state, as shown in figures 7 and 8, the rear support rod 4, the front support rod 3, the seat assembly 2 and the bottom bracket 1 are folded together, so that the dining chair is convenient to carry.

The second embodiment:

the difference between the second embodiment and the first embodiment is: the connecting position of the top of the front support bar 3 in the second embodiment is different from the connecting position of the top of the front support bar 3 in the first embodiment. As shown in fig. 10, the top of the front support rod 3 is rotatably connected to the first grab bar 241, and the rest of the structure is the same as that of the first embodiment, and will not be described again.

In this embodiment, the top of the front support rod 3 is rotatably connected to the first handle bar 241, so that the switching between the unfolded state and the folded state of the dining chair can be realized, and the height adjustment function in the unfolded state can be realized.

Example three:

the difference between the third embodiment and the first embodiment is that: the connecting position of the top of the front support bar 3 in the third embodiment is different from the connecting position of the top of the front support bar 3 in the first embodiment. As shown in fig. 11, the top of the front support bar 3 is rotatably connected to the second grab bar 241, and the rest of the structure is the same as that of the first embodiment, which is not described herein again.

In this embodiment, the top of the front support rod 3 is rotatably connected to the second grab rail 242, that is, an extension rod is provided at one end of the second grab rail 242, and the top of the front support rod 3 is rotatably connected to the front end of the extension rod of the second grab rail 242, so that the switching between the unfolded state and the folded state of the dining chair can be realized, and the height adjustment function in the unfolded state can be realized.

Example four:

the difference between the fourth embodiment and the first embodiment is that: in the fourth embodiment, the connecting positions of the bottom of the front support rod 3 and the bottom of the rear support rod 4 are different from the connecting positions of the bottom of the front support rod 3 and the bottom of the rear support rod 4 in the first embodiment. As shown in fig. 12, the bottom of the front supporting rod 3 is rotatably connected to the first bottom bracket 11, the bottom of the rear supporting rod 4 is rotatably connected to the second bottom bracket 12, and the rest of the structure is the same as that of the first embodiment, and will not be described again.

In this embodiment, the bottom of the front supporting rod 3 is rotatably connected to the first bottom bracket 11, and the bottom of the rear supporting rod 4 is rotatably connected to the second bottom bracket 12, so that the dining chair can be switched between the unfolded state and the folded state, and the height adjustment function in the unfolded state can be realized.

Example five:

the difference between the fifth embodiment and the first embodiment is that: in the fifth embodiment, the connecting positions of the bottom of the front support rod 3 and the bottom of the rear support rod 4 are different from the connecting positions of the bottom of the front support rod 3 and the bottom of the rear support rod 4 in the first embodiment. As shown in fig. 13, the bottom of the front support rod 3 is rotatably connected to the bottom bracket 1, and the bottom of the rear support rod 4 is rotatably connected to the front support rod 3, and the rest of the structure is the same as that of the first embodiment, and will not be described again. Specifically, the method comprises the following steps: the top of the second bottom bracket 12 is provided with an extension rod, the bottom of the front support rod 3 is rotatably connected with the top of the extension rod of the second bottom bracket 12, and the bottom of the rear support rod 4 is rotatably connected with the front support rod 3.

In this embodiment, the bottom of the front support rod 3 is rotatably connected to the bottom bracket 1, and the bottom of the rear support rod 4 is rotatably connected to the front support rod 3, so that the switching between the unfolded state and the folded state of the dining chair can be realized, and the height adjustment function in the unfolded state can be realized.

Example six:

the difference between the sixth embodiment and the first embodiment is that: in the sixth embodiment, the connecting positions of the bottom of the front support rod 3 and the bottom of the rear support rod 4 are different from the connecting positions of the bottom of the front support rod 3 and the bottom of the rear support rod 4 in the first embodiment. As shown in fig. 14, the bottom of the rear support rod 4 is rotatably connected to the bottom bracket 1, the bottom of the front support rod 3 is rotatably connected to the rear support rod 4, and the rest of the structure is the same as that of the first embodiment and will not be described again. Specifically, the method comprises the following steps: the top of first end support 11 has the extension rod, and the bottom of back bracing piece 4 is rotationally connected with the top of the extension rod of first end support 11, and the bottom of preceding bracing piece 3 is rotationally connected with back bracing piece 4.

In this embodiment, the bottom of the rear support rod 4 is rotatably connected to the bottom bracket 1, and the bottom of the front support rod 3 is rotatably connected to the rear support rod 4, so that the switching between the unfolded state and the folded state of the dining chair can be realized, and the height adjustment function in the unfolded state can be realized.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. A dining chair, said dining chair having an unfolded configuration, said dining chair comprising: the dining chair comprises a bottom bracket, a front supporting rod, a rear supporting rod, a seat assembly and a locking device, wherein the seat assembly at least comprises a backrest plate extending along the up-down direction and a seat rod extending along the front-back direction in an unfolded state, and the bottom of the backrest plate is connected with the rear part of the seat rod; two of the bottom of the front support rod, the top of the bottom bracket and the bottom of the rear support rod are rotatably connected, and the other of the three is rotatably connected with one of the two, or the three are rotatably connected with each other, and the top of the front support rod is rotatably connected with the seat assembly; the back board and the back support rod can be connected in a relatively sliding mode, the locking device locks the back board and the back support rod in a sliding mode, and when the back board slides relative to the back support rod, the seat rod can be adjusted in the height direction relative to the bottom support.

2. A dining chair according to claim 1, wherein: the bottom of the back rest plate is rotatably connected with the rear part of the seat rod.

3. A dining chair according to claim 1, wherein: the seat component also comprises armrest components positioned at two sides of the sitting rod, the armrest components are connected between the backrest plate and the sitting rod, and the top of the front supporting rod is rotatably connected with the sitting rod or the armrest components.

4. A dining chair according to claim 3, wherein: the handrail component comprises a first handrail rod and a second handrail rod, one end of the first handrail rod is rotatably connected with one end of the second handrail rod, the other end of the first handrail rod is rotatably connected with the seat rod, and the other end of the second handrail rod is rotatably connected with the back board.

5. A dining chair according to claim 4, wherein: the top of the front supporting rod is rotatably connected with one of the seat rod, the first handrail rod and the second handrail rod.

6. A dining chair according to claim 1, wherein: the bottom bracket comprises a first bottom bracket and a second bottom bracket, the top of the first bottom bracket is rotatably connected with the top of the second bottom bracket, the bottom of the front supporting rod is rotatably connected with at least one of the first bottom bracket, the second bottom bracket and the rear supporting rod, and the bottom of the rear supporting rod is rotatably connected with at least one of the first bottom bracket, the second bottom bracket and the front supporting rod.

7. A dining chair according to claim 6, wherein: the top of the first bottom bracket, the top of the second bottom bracket, the bottom of the front supporting rod and the bottom of the rear supporting rod are rotatably connected through the same rotating point, and the top of the front supporting rod is rotatably connected with the seat rod.

8. A dining chair according to claim 1, wherein: the rear supporting rod comprises vertical rods positioned on two sides and a cross rod connected between the vertical rods on the two sides, and the bottom of each vertical rod is rotatably connected with the bottom bracket; the back board has sliding guide part in the back part, and the cross bar is set inside the sliding guide part and capable of sliding relatively to the sliding guide part.

9. A dining chair according to claim 8, wherein: the locking device comprises a locking piece and a locking hole formed in the rear part of the back board, and when the back board is locked in a sliding mode relative to the rear supporting rod, the locking piece penetrates through the cross rod and is inserted into the locking hole, or the locking piece is inserted into the locking hole and is supported below the cross rod; the back board is characterized in that the lock holes are formed in multiple numbers, and the lock holes are distributed along the up-down direction of the back board.

10. A dining chair according to claim 1, wherein: the dining chair still have fold condition, work as the dining chair be in fold condition time, back bracing piece, preceding bracing piece, seat subassembly and the end support between draw in each other, work as the dining chair be in when the expansion state, back bracing piece, preceding bracing piece, seat subassembly and the end support between expand each other, just the back board can be relative back bracing piece slide adjusting.

Images