CN218571804U

CN218571804U - Triple-connection group of folding chair and folding chair

Info

Publication number: CN218571804U
Application number: CN202223096517.4U
Authority: CN
Inventors: 朱晓辉; 张帆
Original assignee: Zhejiang Sunshine Leisure Products Co ltd
Current assignee: Zhejiang Sunshine Leisure Products Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-03-07
Anticipated expiration: 2032-11-18

Abstract

The utility model discloses a triple group of a folding chair and a folding chair, wherein the triple group comprises a sitting tube, a back tube and a rear foot tube group which are connected through an intermediate connecting piece, the intermediate connecting piece comprises a first connecting piece and a second connecting piece which are hinged with each other, one end of the sitting tube and one end of the back tube are both connected on the first connecting piece, the included angle formed by the sitting tube and the back tube is changeable, and the rear foot tube group is connected on the second connecting piece and can rotate along with the second connecting piece relative to the first connecting piece; the utility model discloses simple structure, stability is good, only needs an intermediate junction spare will sit pipe, back of the body pipe and back foot pipe group link, has alleviateed folding chair's whole weight when reduce cost.

Description

Triple-connected group of folding chair and folding chair

Technical Field

The utility model belongs to the technical field of folding chair and specifically relates to a triple-unit and folding chair of folding chair.

Background

In order to meet the leisure requirements of people in places such as life, work and the like, various folding chairs appear on the market. For example, chinese patent document CN 213820607U discloses a multi-angle adjustable chair frame, which comprises a bearing frame and a supporting frame, wherein a first adjusting member is disposed at a joint of the bearing frame and the supporting frame, and because there is no supporting point below the first adjusting member, the stability of the chair back is insufficient when the chair is in use; chinese patent document CN 214963929U discloses a folding chair frame and a folding chair having the folding chair frame, wherein the folding chair frame has a backrest tube, a seat tube and a rear leg tube, so as to ensure the stability of the chair back, but the structure has more hinge points of the backrest tube, the seat tube and the rear leg tube, which requires more parts, thus resulting in a heavier folding chair frame as a whole; chinese patent document CN215126314U discloses a folding chair frame, in which a front leg backrest tube, a seat tube and a rear leg tube are connected by a connecting member, thereby reducing the overall weight, but when the folding chair frame is unfolded, the front leg backrest tube is at a fixed angle, and the angle of the chair back cannot be adjusted.

SUMMERY OF THE UTILITY MODEL

The utility model provides a triple-link group of folding chair and folding chair for solving the above problems.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a triple gang of folding chair, includes the seat pipe, back of the body pipe and the back foot pipe group of connecting through intermediate junction spare, intermediate junction spare includes two first connecting pieces of mutual articulated and second connecting piece, sit pipe one end and back of the body pipe one end and all connect on first connecting piece to the contained angle of sitting pipe and back of the body pipe formation is variable, back foot pipe group connects on the second connecting piece, can rotate along with the relative first connecting piece of second connecting piece.

The first connecting piece is provided with a bottom plate and two side walls connected to the bottom plate, the bottom plate and the two side walls are enclosed to form a U-shaped groove, one side of each side wall is used as a fixed connection part and is fixedly connected with the seat tube, and the other side of each side wall extends outwards to form a hinge part which is hinged with the back tube. Sit the pipe and link firmly and the back pipe is articulated with first connecting piece to realize sitting the pipe and forming changeable contained angle with the back pipe, can make the two form the state of being close to parallel through rotating sitting pipe andor back pipe when folding up on the one hand, on the other hand can realize folding back of the chair angle's adjustment through rotating the back pipe.

Furthermore, the included angle between the central line of the fixed connection part and the central line of the hinge part is an obtuse angle, and the seat tube and the back tube are positioned on the same plane.

And furthermore, the second connecting piece is hinged below the bottom plate of the first connecting piece, the second connecting piece is a U-shaped piece with a downward opening, and the rear foot tube group is hinged in the second connecting piece.

And furthermore, the axis of the hinged part of the first connecting piece and the second connecting piece is vertical to the bottom plate of the first connecting piece.

The improved structure of the telescopic tube is characterized in that the rear foot tube group comprises an outer tube, a telescopic tube and a limiting sleeve, the telescopic tube is arranged in the outer tube, the limiting sleeve is arranged at the upper end of the outer tube to prevent the telescopic tube from being separated from the outer tube, and the upper end of the telescopic tube is hinged to the second connecting piece.

The utility model also provides a folding chair, which comprises the three-connection group.

The folding chair is further improved in that when the folding chair is completely unfolded, the second connecting piece drives the rear foot tube to twist, so that the plane where the rear foot tube is located is intersected with the plane where the seat tube and the back tube are located. The plane of the rear foot tube refers to a plane where the center line of the rear foot tube along the length direction is parallel to the side wall of the rear foot tube, and the side wall of the rear foot tube refers to the side wall abutted to the second connecting piece; the plane of the seat pipe and the back pipe refers to a plane where the central line of the seat pipe/the back pipe along the length direction is parallel to the side wall of the seat pipe/the back pipe, and the side wall of the seat pipe/the back pipe refers to the side wall which is abutted against the first connecting piece.

The utility model provides a technical scheme has following beneficial effect:

1. the seat tube, the back tube and the rear foot tube group are connected through the middle connecting piece, so that the stability of the chair back when the folding chair is unfolded is ensured;

2. the back pipe is hinged on the first connecting piece, so that the back pipe can rotate in a certain range, the angle of the chair back is adjusted, and different use requirements are met;

3. the folding chair is simple in structure, the seat tube, the back tube and the rear foot tube group are connected through only one middle connecting piece, and the whole weight of the folding chair is reduced while the cost is reduced.

Drawings

FIG. 1 is a perspective view of a folding chair according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a triple-unit expanded state according to an embodiment of the present invention;

FIG. 3 is a schematic view of an intermediate connection member according to an embodiment of the present invention;

fig. 4 is a structural schematic diagram of a triple-unit semi-folded state according to an embodiment of the present invention;

fig. 5 is a structural schematic diagram of a triple-unit fully folded state according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the drawings and specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "side", "center", "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 the 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.

As shown in fig. 1 and fig. 2, a folding chair comprises a set of parallel triple-link group 10, the triple-link group 10 comprises a sitting tube 12, a back tube 13 and a rear leg tube group 14 which are connected through an intermediate connecting member 11, the intermediate connecting member 11 comprises two mutually hinged first connecting members 111 and second connecting members 112, one end of the sitting tube 12 and one end of the back tube 13 are both connected onto the first connecting member 111, and the included angle formed by the sitting tube 12 and the back tube 13 is variable, the rear leg tube group 14 is connected onto the second connecting member 112 and can rotate along with the second connecting member 112 relative to the first connecting member 111.

As shown in fig. 3, in this embodiment, the first connecting member 111 has a bottom plate 1111 and two side walls 1112 connected to the bottom plate 1111, the bottom plate 1111 and the two side walls 1112 form a U-shaped groove, one side of the two side walls 1112 is used as a fixed connecting portion 111a for being fixedly connected to the seat pipe 12, and specifically, the fixed connecting portion 111a is provided with two hole sites for being fixedly connected to the seat pipe 12; the other side of the two sidewalls 1112 extends outward to form a hinge 111b hinged to the back tube 13. Specifically, the hinge portion 111b is provided with a single hole for being hinged to the back tube 13. The central line of the fixed connecting part 111a and the central line of the hinge part 111b form an obtuse angle. The seat tube 12 and the back tube 13 are in the same plane when connected to the first connecting member. The bottom plate 1111 is provided with a back hole for being hinged with the second connecting member 112.

In this embodiment, the second connecting member 112 is hinged below the bottom plate 1111 of the first connecting member 111, the second connecting member 112 is a downwardly opening U-shaped member, and the rear leg pipe set 14 is hinged in the second connecting member 112. Specifically, the side of the second connecting member 112 is provided with a hinge hole for being hinged to the rear leg, a back hole is arranged above the second connecting member 112 for being hinged to the first connecting member 111, and the axial line of the hinge point of the first connecting member 111 and the second connecting member 112 is perpendicular to the bottom plate 1111 of the first connecting member 111.

With continued reference to fig. 2, in the present embodiment, the rear leg tube set 14 includes an outer tube 141, a telescopic tube 142 and a stop sleeve 143, the telescopic tube 142 is disposed in the outer tube 141, the stop sleeve 143 is disposed at the upper end of the outer tube 141 to prevent the telescopic tube 142 from coming out of the outer tube 141, and the upper end of the telescopic tube 142 is hinged to the second connecting member 112.

Fig. 4 is a schematic structural view of the triple set in a half-folded state, that is, the back tube 13 rotates toward the seat tube 12 along the first connecting member 111, and an included angle formed by the seat tube 12 and the back tube 13 is smaller than an angle formed when the folding chair frame is unfolded. Fig. 5 is a schematic structural view of the triple unit in a fully folded state, i.e., the back tube 13 is rotated to be approximately parallel to the seat tube 12 along the first connecting member 111.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A triple-connected group of folding chairs is characterized in that: including sitting pipe, back pipe and back foot tube group through the connection of intermediate junction spare, intermediate junction spare includes two first connecting pieces of mutual articulated and second connecting piece, sit pipe one end and back pipe one end and all connect on first connecting piece to it is variable to sit the contained angle that pipe and back pipe formed, back foot tube group link is on the second connecting piece, can rotate along with the relative first connecting piece of second connecting piece.

2. A triple-gang of folding chairs according to claim 1, wherein: the first connecting piece is provided with a bottom plate and two side walls connected to the bottom plate, the bottom plate and the two side walls are enclosed to form a U-shaped groove, one side of each side wall is used as a fixed connection part and is fixedly connected with the seat tube, and the other side of each side wall extends outwards to form a hinge part which is hinged with the back tube.

3. Triple-gang folding chair as claimed in claim 2, characterized in that: the included angle between the central line of the fixed connection part and the central line of the hinge part is an obtuse angle, and the sitting tube and the back tube are positioned on the same plane.

4. Triple-gang folding chair as claimed in claim 2, characterized in that: the second connecting piece is hinged below the first connecting piece bottom plate and is a U-shaped piece with a downward opening, and the rear foot tube group is hinged in the second connecting piece.

5. The triple-gang of folding chairs of claim 4, wherein: the axis of the hinged part of the first connecting piece and the second connecting piece is perpendicular to the bottom plate of the first connecting piece.

6. Triple-gang folding chair as claimed in claim 1, characterized in that: the rear foot tube group comprises an outer tube, a telescopic tube and a limiting sleeve, the telescopic tube is arranged in the outer tube, the limiting sleeve is arranged at the upper end of the outer tube to prevent the telescopic tube from being separated from the outer tube, and the upper end of the telescopic tube is hinged to the second connecting piece.

7. A folding chair is characterized in that: triple stack comprising folding chairs according to any one of claims 1 to 6.

8. A folding chair as claimed in claim 7, wherein: when the folding chair is completely unfolded, the second connecting piece drives the rear foot tube to twist, so that the plane of the rear foot tube is intersected with the planes of the seat tube and the back tube.