CN115868754A

CN115868754A - Folding chair frame and folding chair

Info

Publication number: CN115868754A
Application number: CN202211260150.7A
Authority: CN
Inventors: 杨宝庆; 容国凯; 卢小明; 王健
Original assignee: Zhejiang Hengfeng Top Leisure Co Ltd
Current assignee: Zhejiang Hengfeng Top Leisure Co Ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2023-03-31

Abstract

The application relates to a folding chair frame, wherein each front foot tube is respectively provided with a pivoting seat, a connecting rod assembly in the chair frame is connected with the front foot tube through the pivoting seat, the first end of the pivoting seat is in pivoting connection with the corresponding front foot tube, and the joint of the connecting rod assembly and the pivoting seat is positioned at the second end of the pivoting seat; in the unfolded state of the chair frame, the second end of the pivoting seat is locked above the first end of the pivoting seat; when the chair frame is switched to the folding state, the second end of the pivoting seat moves downwards relative to the first end. The application also provides a folding chair with the chair frame. By adopting the scheme, the connecting position of the connecting rod assembly and the front foot tube can be moved, and the height of the chair frame in a folded state can be favorably shortened.

Description

Folding chair frame and folding chair

Technical Field

The invention relates to the field of outdoor articles, in particular to a folding chair frame and a folding chair.

Background

A folding chair commonly available in the market is a structure that realizes switching between a folding state and an unfolding state through linkage of support tubes constituting a chair frame, the structure can realize rapid unfolding or folding of the folding chair, and for convenience of description, the folding chair of this structure is referred to as a bundle-type folding chair hereinafter. The height of the bundle type folding chair in the market after being folded is about 90CM basically, and the backrest is generally shorter based on the limitation of the height after being folded, so that the backrest is not enough to support the back and the use comfort is not high.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a folding chair frame that adopts a completely new folding structure and can reduce the height after folding. The invention also aims to provide a folding chair with the folding chair frame.

In order to achieve the purpose, the invention adopts the following technical scheme:

a folding chair frame can be switched between an unfolding state and a folding state and comprises a seat tube (5), front foot tubes (1), rear foot tubes (7) and connecting rod assemblies, wherein each front foot tube (1) is provided with a pivoting seat (2), the connecting rod assemblies in the chair frame are connected with the front foot tubes (1) through the pivoting seats (2), the first ends of the pivoting seats (2) are pivotally connected with the corresponding front foot tubes (1), and the connecting positions of the connecting rod assemblies and the pivoting seats (2) are positioned at the second ends of the pivoting seats (2); in the unfolded state of the chair frame, the second end of the pivoting seat (2) is locked above the first end thereof; when the chair frame is switched to the folding state, the second end of the pivoting seat (2) moves downwards relative to the first end.

Preferably, the second end of the pivoting seat (2) forms a locking opening towards the direction of the corresponding front foot pipe (1), the front foot pipe (1) is embedded and abutted against the locking opening in the unfolding state of the chair frame, when the chair frame is switched to the folding state, the front foot pipe (2) is separated from the locking opening, and the second end of the pivoting seat (2) rotates downwards by taking the first end as a rotation center.

Preferably, the upper ends of the front foot tube (1) and the rear foot tube (7) in the chair frame are rotatably connected to the seat tube (5) on the same side, the connecting rod assembly comprises a foot tube connecting rod (3), one end of the foot tube connecting rod (3) is hinged to the second end of the pivot seat (2), and the other end of the foot tube connecting rod (3) is hinged to the rear foot tube (7) on the same side.

Preferably, the connecting rod assembly comprises a front cross pipe (15), the front cross pipe (15) comprises a group of front inclined supporting pipes which are arranged in a crossed mode and hinged with each other, the upper end of the front cross pipe (15) is hinged to the seat pipe (5), and the lower end of the front cross pipe (15) is hinged to the second end of the pivot seat (2).

Preferably, the chair frame also comprises a rear cross pipe (16), the rear cross pipe comprises a group of rear inclined supporting pipes which are arranged in a cross mode and hinged with each other, the upper end of the rear cross pipe is hinged with the rear end of the seat pipe (5), and the lower end of the rear cross pipe is hinged with the rear foot pipe (7).

Preferably, the chair frame further comprises a backrest tube (12), the backrest tube (12) is connected with the seat tube (5) through a backrest tube connecting piece (11), the backrest tube connecting piece (11) is fixed at the rear end of the seat tube (5), the backrest tube (12) is hinged to the backrest tube connecting piece (11), and the backrest tube connecting piece (11) provides rear side limiting.

Preferably, the chair frame further comprises a handrail tube (10), the connecting rod assembly further comprises a supporting tube (4), the rear end of the handrail tube (10) is hinged to the backrest tube (12) on the same side, the upper end of the supporting tube (4) is connected to the handrail tube (10) in a sliding mode, and the lower end of the supporting tube (4) is hinged to the second end of the pivoting seat (2).

Preferably, a support tube sliding sleeve (6) is sleeved on the support tube (4), the support tube sliding sleeve (6) is hinged with the seat tube (5), and the support tube (4) can move relative to the support tube sliding sleeve (6) along the axial direction of the support tube.

Preferably, two cross brace tubes (13) which are hinged with each other and a locking piece (14) for locking the two cross brace tubes (13) in the unfolding state are arranged between the two backrest tubes (12).

The application also provides a folding chair, which comprises the folding chair frame.

By adopting the technical scheme, the pivot seat is arranged on the folding chair frame, and the connecting rod assembly connected with the front foot tube is connected to the second end of the pivot seat, so that the connecting position of the connecting rod assembly and the front foot tube can move in the unfolding state and the folding state of the folding chair frame, and particularly, the connecting position in the folding state relative to the front foot tube is positioned below the unfolding state, thereby being beneficial to shortening the height of the chair frame in the folding state.

Drawings

FIG. 1 is a schematic structural diagram of an expanded state of an embodiment of the present application;

FIG. 2 is a schematic view of an embodiment of the present application in an intermediate folded state;

fig. 3 is a schematic view of the folded state of the embodiment of the present application.

Reference numerals:

the front leg tube 1, the pivot seat 2, the leg tube connecting rod 3, the supporting tube 4, the seat tube 5, the supporting tube sliding sleeve 6, the rear leg tube 7, the seat tube connecting piece 8, the handrail tube sliding sleeve 9, the handrail tube 10, the backrest tube connecting piece 11, the backrest tube 12, the cross-brace tube 13, the locking piece 14, the front cross tube 15 and the rear cross tube 16.

Detailed Description

Embodiments of the present disclosure are described in detail below.

In the description of the present disclosure, 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 are used in the orientations and positional relationships indicated in the drawings for convenience in describing and simplifying the disclosure, 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 therefore should not be considered as limiting the disclosure.

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 to implicitly indicate 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. Unless otherwise indicated, "plurality" means two or more unless explicitly defined otherwise.

Example 1:

the embodiment discloses a folding chair frame. As shown in fig. 1-3, the folding chair frame can be switched between an unfolded state and a folded state, the chair frame comprises a seat tube 5, front foot tubes 1, rear foot tubes 7 and a connecting rod assembly, each front foot tube 1 is provided with a pivot seat 2, the connecting rod assembly in the chair frame is connected with the front foot tubes 1 through the pivot seats 2, the first ends of the pivot seats 2 are pivotally connected with the corresponding front foot tubes 1, and the connecting positions of the connecting rod assembly and the pivot seats 2 are located at the second ends of the pivot seats 2; the second end of the pivot seat 2 forms a locking opening towards the direction of the front leg tube 1 corresponding to the pivot seat, the front leg tube 1 is embedded and propped against the locking opening in the unfolding state of the chair frame, and the second end is positioned above the first end; when the chair frame is folded, the front foot tube 1 is separated from the locking port, and the second end moves downwards relative to the first end.

Above-mentioned folding chair frame sets up pivot seat 2, and the link assembly who is connected with preceding foot pipe 1 is connected at pivot seat 2's second end for under folding chair frame development condition and fold condition, link assembly and preceding foot pipe 1's hookup location can move, specifically is located the below under the development condition for the junction under preceding foot pipe 1 fold condition, thereby is favorable to shortening the height of chair frame under fold condition.

The upper ends of the front foot tube 1 and the rear foot tube 7 in the chair frame are rotatably connected on the seat tube 5 on the same side, the connecting rod assembly comprises a foot tube connecting rod 3, one end of the foot tube connecting rod 3 is hinged at the second end of the pivot seat 2, and the other end of the foot tube connecting rod 3 is hinged on the rear foot tube 7 on the same side. The relative rotating plane of the front foot tube 1 and the rear foot tube 7 on the same side is parallel to the plane of the second end of the pivoting seat 2 rotating by taking the first end as the center. In the embodiment, a seat tube connecting piece 8 is fixed on the seat tube 5, and the upper ends of the front foot tube 1 and the rear foot tube 7 are hinged on the seat tube connecting piece 8. The seat tube connecting piece 8 is arranged to facilitate the connection of the front foot tube 1, the rear foot tube 7 and the seat rod.

The folding chair frame with the structure comprises a pivot seat 2, wherein the pivot seat 2 is arranged on a front foot tube 1, a connecting rod is arranged between the front foot tube 1 and a rear foot tube 7, and when the chair frame is unfolded and used, a seat tube 5 is stressed by downward pressure and is conducted to the connecting rod to apply backward pulling force to the pivot seat 2 through the connecting rod, so that the front foot tube 1 is abutted to a locking opening, and the front foot tube 1, the rear foot tube 7 and the connecting rod form a triangular stable state. When the folding seat is folded, the pivot seat 2 is rotated to enable the front leg tube 1 to be separated from the locking opening, meanwhile, the second end of the pivot seat 2 drives the connecting rod, the connecting rod drives the rear leg tube 7 to be close to the front leg tube 1, and the front leg tube 1 and the rear leg tube 7 are folded towards the seat tube 5. Above-mentioned structure is because preceding foot pipe 1 and back foot pipe 7 upper end are connected on seat pipe 5, and it is shorter to provide the same length that uses preceding foot pipe 1 and the back foot pipe 7 that highly needs set up for other structures among the prior art, is favorable to shortening the folding height of chair frame to realize preceding foot pipe 1 and back foot pipe 7 at the fast switch-over of expansion state and fold condition through pivot seat 2 and connecting rod linkage cooperation.

The connecting rod assembly comprises a front side cross pipe 15, the front side cross pipe 15 comprises a group of front side inclined supporting pipes which are arranged in a crossed mode and hinged with each other, the upper end of the front side cross pipe 15 is hinged to the seat pipe 5, and the lower end of the front side cross pipe 15 is hinged to the second end of the pivoting seat 2. The front cross tubes 15 are arranged to provide diagonal support in the unfolded state of the frame of the foldable chair to prevent the front leg tubes 1 from being relatively close to each other and deformed during use, which may affect the normal use of the foldable chair. The lower end of the front cross pipe 15 is hinged at the second end of the pivoting seat 2, and when the front cross pipe 15 needs to be folded, the second end of the pivoting seat 2 drives the front cross pipe 15 to move downwards while being closed. The above arrangement makes the connection position of the front cross tube 15 with the head tube 1 movable in the folded state and the unfolded state, which is advantageous for reducing the height of the folded state of the chair frame.

The chair frame also comprises a rear cross pipe 16, and the front cross pipe 15 and the rear cross pipe 16 are arranged to respectively provide oblique support from the front side and the rear side of the chair frame, so that the overall strength of the chair frame is enhanced. The rear cross pipe comprises a group of rear side inclined supporting pipes which are arranged in a cross mode and hinged with each other, the upper end of the rear cross pipe is hinged with the rear end of the seat pipe 5, the lower end of the rear cross pipe is hinged with the rear foot pipe 7, and the joint of the rear cross pipe and the rear foot pipe 7 is arranged close to the lower end of the rear foot pipe 7. With the above structure, the linkage between the rear cross pipe, the seat pipe 5 and the rear leg pipe 7 can be realized.

The chair frame further comprises a backrest tube 12, the backrest tube 12 is connected with the seat tube 5 through a backrest tube connecting piece 11, the backrest tube connecting piece 11 is fixed at the rear end of the seat tube 5, the backrest tube is hinged on the backrest tube connecting piece 11, and the backrest tube connecting piece 11 provides limiting of the rear side. Thereby, it is possible to realize the backward opening or forward folding of the back pipe with respect to the seat pipe 5, and the back pipe is kept in the unfolded state by the limit from the rear side provided by the back pipe connection member 11 in the unfolded state.

The chair frame further comprises a handrail tube 10, the connecting rod assembly further comprises a supporting tube 4, the rear end of the handrail tube 10 is hinged to the backrest tube on the same side, the upper end of the supporting tube 4 is connected to the handrail tube 10 in a sliding mode, and the lower end of the supporting tube 4 is hinged to the second end of the pivoting seat 2. In this way, in the deployed state, the support tube 4 can be supported by the head tube 1, and the handrail 10 can be supported from below. In the embodiment, the support tube 4 is connected with the handrail tube 10 through a handrail tube sliding sleeve 9 capable of sliding along the axial direction of the handrail tube 10. Because the second end of the pivot seat 2 is a movable connection point, the upper end of the adaptive support tube is slidably disposed on the handrail tube 10 to adjust the connection position of the support tube on the handrail tube 10 in the folded state and the unfolded state, so that the pivot seat 2, the support tube and the handrail tube 10 can be smoothly linked to fold or unfold. The armrest tube 10 is hinged with the backrest tube, so that the linkage from the pivot seat 2 to the supporting tube to the armrest tube 10 to the backrest tube can be realized, and the operation is convenient.

Preferably, in order to limit the sliding range of the upper end of the support tube 4 along the handrail tube 10 and keep the upper end of the support tube 4 connected with the handrail tube 10, a support tube sliding sleeve 6 is sleeved on the support tube 4, and the support tube sliding sleeve 6 is hinged with the seat tube 5. When switching between the expanded state and the folded state, the support tube is moved in its axial direction relative to the support tube sliding sleeve 6.

Preferably, two cross brace tubes 13 hinged to each other and a locking member 14 for locking the two cross brace tubes 13 in the unfolded state are provided between the two backrest tubes. In the embodiment, the relatively far ends of the cross brace tubes 13 are hinged to the backrest tubes on the corresponding sides, and the relatively near ends of the cross brace tubes 13 are connected by locking members 14. The structure of the cross-brace tube 13 and the locking member 14 can adopt the structure of a backrest support tube and a lock catch in the publication No. CN216702063U, which will not be described herein.

Due to the adoption of the structure, the pipe fittings forming the chair frame are linked, and the switching between the unfolding state and the folding state can be quickly realized. And link assembly is connected with preceding leg 1 through pivot seat 2, can realize moving down at fold condition link assembly and pivot seat 2's hookup location through upset pivot seat 2 to can effectively reduce the chair frame height under fold condition, be convenient for accomodate and carry. By the structure, the folding height can be 70CM, which is the minimum height on the market at present. Compared with the folding chair in the prior art, the backrest can be made higher under the same folding height, and the use comfort can be improved.

Example 2:

this embodiment provides a folding chair that folds to include a folding chair frame as shown in embodiment 1.

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 present disclosure. 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 application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the principles and spirit of the present application.

Claims

1. A folding chair frame can be switched between an unfolding state and a folding state and comprises seat pipes (5), front foot pipes (1), rear foot pipes (7) and connecting rod assemblies, and is characterized in that each front foot pipe (1) is provided with a pivoting seat (2), the connecting rod assemblies in the chair frame are connected with the front foot pipes (1) through the pivoting seats (2), the first ends of the pivoting seats (2) are in pivoting connection with the corresponding front foot pipes (1), and the joints of the connecting rod assemblies and the pivoting seats (2) are positioned at the second ends of the pivoting seats (2); in the unfolded state of the chair frame, the second end of the pivoting seat (2) is locked above the first end; when the chair frame is switched to the folding state, the second end of the pivoting seat (2) moves downwards relative to the first end.

2. A folding chair frame according to claim 1, characterized in that the second end of the pivoting seat (2) forms a locking opening towards the corresponding front leg tube (1), the front leg tube (1) is inserted into the locking opening in the unfolding state of the chair frame, when the chair frame is switched to the folding state, the front leg tube (2) is released from the locking opening, and the second end of the pivoting seat (2) rotates downwards with the first end as the rotation center.

3. A folding chair frame according to claim 1, characterized in that the upper ends of the front leg (1) and the rear leg (7) of the frame are pivotally connected to the seat tube (5) on the same side, the connecting rod assembly comprises a leg tube connecting rod (3), one end of the leg tube connecting rod (3) is hinged to the second end of the pivot seat (2), and the other end of the leg tube connecting rod (3) is hinged to the rear leg (7) on the same side.

4. A folding chair frame as claimed in claim 1, characterized in that the connecting rod assembly comprises a front cross tube (15), the front cross tube (15) comprising a set of front cross tubes arranged crosswise and hinged to each other, the upper end of the front cross tube (15) being hinged to the seat tube (5) and the lower end of the front cross tube (15) being hinged to the second end of the pivoting seat (2).

5. A folding chair frame according to claim 1, characterised in that the frame also comprises a rear cross tube (16) comprising a set of rear cross tubes arranged crosswise and hinged to each other, the upper ends of which are hinged to the rear end of the seat tube (5) and the lower ends of which are hinged to the rear leg tube (7).

6. A folding chair frame according to claim 1, characterised in that the chair frame also comprises a backrest tube (12), the backrest tube (12) being connected to the seat tube (5) by means of a backrest tube connection (11), the backrest tube connection (11) being fixed at the rear end of the seat tube (5), the backrest tube (12) being hinged to the backrest tube connection (11) and the backrest tube connection (11) providing a rear side stop.

7. A folding chair frame according to claim 6, characterized in that the chair frame further comprises a handrail tube (10), the connecting rod assembly further comprises a supporting tube (4), the rear end of the handrail tube (10) is hinged on the backrest tube (12) on the same side, the upper end of the supporting tube (4) is slidably connected on the handrail tube (10), and the lower end of the supporting tube (4) is hinged on the second end of the pivoting seat (2).

8. A folding chair frame according to claim 7, characterized in that a support tube sliding sleeve (6) is sleeved on the support tube (4), the support tube sliding sleeve (6) is hinged with the seat tube (5), and the support tube (4) can move along the axial direction thereof relative to the support tube sliding sleeve (6).

9. A folding chair frame according to claim 6, characterised in that between the two backrest tubes (12) there are provided two cross brace tubes (13) which are hinged and a locking element (14) for locking the two cross brace tubes (13) in the unfolded state.

10. A folding chair, characterized in that it comprises a folding chair frame according to any one of claims 1 to 9.