CN211795404U - Folding chair - Google Patents

Abstract

The utility model discloses a folding chair, comprising a seat surface structure, a backrest structure installed at the rear end of the seat surface structure, and two support structures installed on both sides of the seat surface structure. The flexible seating surface is installed between the two seat rods, the backrest structure includes two backrest rods arranged side by side and a flexible backrest installed between the two backrest rods, and an armrest is movably installed above each support structure, The rear end of each seat bar is hinged to the lower end of the backrest bar on the same side, the rear end of the armrest on the same side is hinged to the middle end of the backrest bar, and the backrest bar swings back and forth to drive the armrest to slide back and forth above the support structure. Through the hinged structure, the folding chair has the functions of storage and unfolding. At the same time, in the unfolded state, the backrest structure can also swing back and forth, and the stability is improved through the connection of the armrests, thereby adjusting the angle of the backrest structure and improving the stability during use. and comfort.

Description

a folding chair

technical field

The utility model relates to the field of outdoor equipment, in particular to a folding chair.

Background technique

The folding chair can be folded, which is easy to carry and save storage space, and is widely used in various outdoor activities, such as the folding chair can be used when fishing.

However, the existing folding chair has only two forms, an unfolded state and a stowed state. After unfolding, the angle of the seat surface and the backrest is fixed, which reduces the comfort of sitting. At the same time, the legs of the existing folding chairs have the same length. When used outdoors, the outdoor ground is uneven, which causes the folding chair to be unable to support stably, or the chair surface is inclined, which reduces safety and comfort.

Therefore, how to provide a stable and comfortable folding chair is a technical problem to be solved by those skilled in the art.

Utility model content

The purpose of the utility model is to provide a folding chair, the backrest structure can swing back and forth to improve stability and comfort.

In order to solve the above technical problems, the present invention provides a folding chair, which includes a seat surface structure, a backrest structure installed at the rear end of the seat surface structure, and two support structures installed on both sides of the seat surface structure. Including two seat bars arranged side by side and a flexible seating surface installed between the two seat bars, and the backrest structure includes two back bars arranged side by side and a seat mounted between the two back bars. On the back of the flexible backrest, an armrest is movably installed above each of the support structures, the rear end of each seat surface rod is hinged to the lower end of the backrest rod on the same side, and the rear end of the armrest on the same side is hinged to the lower end of the backrest rod on the same side. The middle end of the backrest bar drives the armrest to slide back and forth above the support structure when the backrest bar swings back and forth.

Preferably, a limit structure is installed between the two backrest rods, and the two sides of the lower end of the limit structure are hinged to the rear ends of the two seat rods, respectively, and the limit structure is connected to the seat rod. The connection point of the backrest rod is located behind the connection point of the backrest rod and the seat surface rod, and two sides of the upper end of the limiting structure are respectively slidably connected to the upper ends of the two backrest rods.

Preferably, a guide rod parallel to the backrest rod is installed on the rear side of the upper end of the backrest rod, and sliding sleeves sleeved on the guide rod are installed on both sides of the upper end of the limiting structure, and the guide rod The two ends of the backrest bar are connected by a hoop.

Preferably, the limiting structure includes two cross-arranged rear connecting rods, the middle parts of the two rear connecting rods are hinged, and the lower ends of the rear connecting rods are connected to the seat rod through a universal shaft, and the rear connecting rods are The upper end of the connecting rod is connected to the sliding sleeve through a universal shaft, and two horizontal connecting rods hinged in sequence are installed between the two rear connecting rods. The outer ends of the two transverse links are restricted from turning upwards.

Preferably, it also includes a transition rod and a limit rod, the lower end of the backrest rod is hinged with the upper end of the transition rod, the lower end of the transition rod is hinged with the seat surface rod, and the upper end of the limit rod is hinged with the transition rod At the lower end of the rod, the lower end of the limit rod is hinged to the middle part behind the support structure on the same side, and a limit block is installed on the upper end of the limit rod.

Preferably, it also includes two cross-arranged front connecting rods, the middle parts of the two front connecting rods are hinged, the upper end of the front connecting rod is connected to the front end of the seat surface rod through a universal shaft, and the front connecting rod The lower end of the support structure is connected to the lower end in front of the supporting structure through a universal shaft.

Preferably, the support structure on each side includes two legs arranged in front and rear, the upper ends of the two legs are hinged, and the middle part of the front leg is hinged to the middle part of the seat bar.

Preferably, the outriggers are telescopic rods nested inside and outside, the lower ends of the outer rods of the telescopic rods are provided with locking and positioning mechanisms, and the lower ends of the inner rods of the telescopic rods are provided with support plates.

Preferably, the inner rod is connected to the support plate through a joint bearing.

Preferably, a spring is provided inside the telescopic rod.

The utility model provides a folding chair, which comprises a seat surface structure, a backrest structure installed at the rear end of the seat surface structure, and two support structures installed on both sides of the seat surface structure. The flexible seating surface is installed between the two seat rods, the backrest structure includes two backrest rods arranged side by side and a flexible backrest installed between the two backrest rods, and an armrest is movably installed above each support structure, The rear end of each seat bar is hinged to the lower end of the backrest bar on the same side, the rear end of the armrest on the same side is hinged to the middle end of the backrest bar, and the backrest bar swings back and forth to drive the armrest to slide back and forth above the support structure.

Through the hinged structure, the folding chair has the functions of storage and expansion. At the same time, in the unfolded state, the backrest structure can also swing back and forth, and the stability is improved through the connection of the armrests, thereby adjusting the angle of the backrest structure and improving the stability during use. and comfort.

Description of drawings

Fig. 1 is the front structure schematic diagram of a specific embodiment of the folding chair provided by the utility model;

FIG. 2 is a schematic view of the rear structure of a specific embodiment of the folding chair provided by the utility model;

3 is a schematic diagram of a first unfolding angle of a specific embodiment of the folding chair provided by the present invention;

4 is a schematic diagram of a second deployment angle of a specific embodiment of the folding chair provided by the present invention;

5 is a schematic diagram of a storage process of a specific embodiment of the folding chair provided by the present invention;

FIG. 6 is a schematic diagram of the completion of storage of a specific embodiment of the folding chair provided by the present invention.

Detailed ways

The core of the utility model is to provide a folding chair, the backrest structure can swing back and forth to improve stability and comfort.

In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Please refer to FIGS. 1 to 6. FIG. 1 is a schematic diagram of the front structure of a specific embodiment of the folding chair provided by the present invention; FIG. 2 is the rear structure of a specific embodiment of the folding chair provided by the present invention. Schematic diagram; FIG. 3 is a schematic diagram of a first deployment angle of a specific embodiment of the folding chair provided by the present invention; FIG. 4 is a schematic diagram of a second deployment angle of a specific embodiment of the folding chair provided by the present invention; FIG. 5 is a schematic diagram of the storage process of a specific embodiment of the folding chair provided by the present invention; FIG. 6 is a schematic view of the completion of the storage process of a specific embodiment of the folding chair provided by the present invention.

The specific embodiment of the present invention provides a folding chair, which includes a seat surface structure, a backrest structure and two supporting structures. In the unfolded state of the folding chair, the seat surface structure tends to be in a horizontal state, and the backrest structure is in a vertical state or an inclined state, wherein the backrest is in a horizontal state. The structure is installed at the rear end of the seat surface structure, and the two supporting structures are respectively installed on both sides of the seat surface structure. The seat surface structure includes two seat surface rods 1 arranged side by side and a flexible seating installed between the two seat surface rods In the unfolded state, the two seat rods 1 are horizontal and parallel to each other, and there is a gap between them, which is used to place the unfolded flexible seating surface. The extension direction of the seat rod 1 is the front-rear direction, and the horizontal The radial direction is the left-right direction. The backrest structure includes two backrest bars 2 arranged side by side and a flexible backrest surface installed between the two backrest bars 2. The two backrest bars 2 are vertical and parallel to each other, and there is a space between them. For placing the unfolded flexible backrest, in the stowed state, the two seat bar 1 are close to each other, and the two backrest bars 2 are close to each other. Accordingly, the flexible seating surface and the flexible backrest are also folded. The seat rod 1 and the back rod 2 can be provided with axially extending grooves for installing and fixing both sides of the flexible seating surface and the flexible backrest. The flexible seating surface and the flexible backrest can be integral fabrics, or It is the braided structure and arrangement structure of ropes and belts of various flexible materials.

An armrest 3 is movably installed above each support structure, and the seat bar 1, the back bar 2, the support structure and the armrest on the same side are connected to each other, and the above structures on both sides are symmetrically arranged. In each side, the seat bar 1 The rear end of the armrest 3 is hinged to the lower end of the backrest bar 2, and the rear end of the armrest 3 is hinged to the middle end of the backrest bar 2. The above-mentioned hinge axes are in the left and right directions, and the armrest 3 is located at a distance above the seat bar 1. After unfolding, the backrest bar 2 tends to In the vertical state, it is the first deployment angle. At this time, the backrest structure tends to be vertical, and the person is in a normal sitting posture on the folding chair. , is the second deployment angle, at this time, the backrest structure is inclined backward, and the person sits backward on the folding chair. You can also adjust more angles to further enhance comfort.

A chute can be set on the bottom surface of the armrest 3, the top of the support structure is placed in the chute, and a positioning protrusion and a plurality of positioning grooves are provided. When the angle of the backrest bar 2 changes, the positioning protrusion enters different positioning grooves. To achieve positioning and locking, other positioning methods, such as a damping mechanism or a positioning pin structure, can also be used, all within the protection scope of the present invention.

Through the hinged structure, the folding chair has the functions of storage and expansion. At the same time, in the unfolded state, the backrest structure can also swing back and forth, and the stability is improved through the connection of the armrests 3, and then the angle of the backrest structure is adjusted to improve the stability during use. sex and comfort.

In the folding chair provided by the specific embodiment of the present invention, in order to further improve the stability, a limiting structure is installed between the two backrest bars 2 , and the two sides of the lower end of the limiting structure are respectively hinged to the rear of the two seat surface bars 1 . The connection between the limit structure and the seat bar 1 is located behind the connection between the back bar 2 and the seat bar 1 , and the upper ends of the limit structure are slidably connected to the upper ends of the two back bars 2 respectively. The hinge shafts are arranged along the left and right directions, and the two joints are separated to form a three-link mechanism, and the upper end is connected by sliding, so that the backrest structure can swing back and forth. Of course, the limiting structure may have various structures, and may also be arranged between the two seat surface bars 1 .

Specifically, a guide rod 4 parallel to the backrest rod 2 is installed on the rear side of the upper end of the backrest rod 2, and sliding sleeves sleeved on the guide rod 4 are installed on both sides of the upper end of the limiting structure. The hoop connects the backrest bar 2 . When the backrest bar 2 swings back and forth, the sliding sleeve slides along the guide bar 4, and the position limit can also be realized by the hoop at both ends. The guide rod 4 can also not be provided, and the backrest rod 2 can be directly slid.

In order to facilitate storage, the limit structure needs to be able to reduce the width, that is, the limit structure includes two rear connecting rods 5 arranged in a cross, the middle of the two rear connecting rods 5 is hinged, the hinge shaft is arranged front and rear, and the lower end of the rear connecting rod 5 passes through the The upper end of the rear connecting rod 5 is connected to the sliding sleeve through the universal shaft, that is, a rear connecting rod 5 is connected to the seat surface rod 1 and the sliding sleeve on different sides, and the front and rear and the left and the right are realized through the universal shaft. Rotating in one direction, in the unfolded state, the two rear connecting rods 5 are in an X shape, and two transverse links 6 hinged in sequence are installed between the two rear connecting rods 5, that is, between the upper two arms of the X shape, one One end of the horizontal link 6 is hinged to the rear connecting rod 5 on one side, the other end is hinged to one end of the other horizontal link 6, and the other end of the other horizontal link 6 is hinged to the rear connecting rod 5. The hinge shaft is arranged in the front-rear direction. A limit stop piece 7 is fixedly installed above one of the transverse links 6 to restrict the upward turning of the two outer ends of the two transverse links 6 . In the storage state, the two rear connecting rods 5 are close to each other, and the two transverse connecting rods 6 are also close to each other. Movement, separates from the other horizontal link 6 and extends upward. During the unfolding process, the two horizontal links 6 are pulled away from each other and tend to be in a straight line. Move down, and gradually approach the other horizontal link 6 until it is fully deployed, the limit stop piece 7 is in contact with the other horizontal link 6 and cannot continue to move, and it reaches the limit position, which cannot be further expanded to achieve the limit. And the rear connecting rod 5 can protrude backward to form a depression, which improves the comfort when leaning on. Or adopt other limiting structures, such as locating pin structures, etc., all within the protection scope of the present invention.

Further, two crossed front connecting rods 10 can also be provided, the middle of the two front connecting rods 10 is hinged, the upper end of the front connecting rod 10 is connected to the front end of the seat surface rod 1 through a universal shaft, and the lower end of the front connecting rod 10 is connected by a universal shaft. The cardan shaft is connected to the lower end in front of the support structure. The structure is similar to the rear connecting rod 5, which is in an X shape when unfolded, and the two front connecting rods 10 are close to each other when stored.

In order to further improve the stability, it also includes a transition rod 8 and a limit rod 9. The lower end of the backrest rod 2 is hinged to the upper end of the transition rod 8, the lower end of the transition rod 8 is hinged to the seat rod 1, and the upper end of the limit rod 9 is hinged to the transition rod 8. The lower end of the limit rod 9 is hinged to the middle of the rear of the support structure on the same side, the limit block is installed on the upper end of the limit rod 9, and the hinge shaft is arranged in the left and right direction. By arranging the transition rod 8, the degree of freedom of the link mechanism is improved. In the unfolded state, the limit block is located at the upper end of the limit rod 9 and is in contact with the rear of the support structure. In the retracted state, the limit block is located at the lower end of the limit rod 9 and is in contact with the rear of the support structure. During the state transition, the limit The block rotates nearly 180 degrees under the swing of the limit lever 9 .

On the basis of the folding chairs provided by the above-mentioned specific embodiments, the support structure on each side includes two outriggers 11 arranged in the front and rear. In the middle of 1, the hinge axis is in the left-right direction. In the unfolded state, the lower ends of the two outriggers 11 are separated from each other, forming an A-shape, and in the closed state, the two outriggers 11 are close to each other.

In the process of outdoor use, the ground is uneven, the legs 11 can be telescopic rods nested inside and outside, the lower end of the outer rod of the telescopic rod is provided with a locking and positioning mechanism, and the lower end of the inner rod of the telescopic rod is installed with a support plate 12. The length of each leg 11 is adjusted to be suitable for various grounds, so that the seat surface structure can be kept in a state that tends to be horizontal, so that the folding chair can be stably supported, and the safety and comfort are improved.

Wherein, the inner rod is connected to the support plate 12 through the joint bearing, and the angle of the support plate 12 is adjusted in real time to make the support more stable. A spring can also be arranged inside the telescopic rod, and the inner rod will pop out directly after releasing the locking and positioning mechanism, which is convenient for adjusting the length.

The folding chair provided by the present utility model has been introduced in detail above. The principles and implementations of the present utility model are described herein by using specific examples, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present utility model, some improvements and modifications can also be made to the present utility model, and these improvements and modifications also fall into the protection of the claims of the present utility model. within the range.

Claims (10)

1. A folding chair, comprising a seat surface structure, a backrest structure installed at the rear end of the seat surface structure, and two support structures installed on both sides of the seat surface structure, wherein the seat surface structure includes a side-by-side Two seat surface rods (1) are provided and a flexible seating surface is installed between the two seat surface rods (1), the backrest structure includes two backrest rods (2) arranged side by side and a flexible seating surface installed in the two On the flexible backrest surface between the backrest bars (2), an armrest (3) is movably installed above each of the support structures, and the rear end of each seat surface bar (1) is hinged to the The lower end of the backrest bar (2), the rear end of the armrest (3) on the same side is hinged to the middle end of the backrest bar (2), and when the backrest bar (2) swings back and forth, it drives the armrest (3) to move forward and backward. The upper part of the support structure slides back and forth. 2 . The folding chair according to claim 1 , wherein a limiting structure is installed between the two backrest bars ( 2 ), and two sides of the lower end of the limiting structure are respectively hinged to the two seat surfaces. 3 . At the rear end of the rod (1), the connection between the limiting structure and the seat rod (1) is located behind the connection between the backrest rod (2) and the seat rod (1). Two sides of the upper end of the limiting structure are respectively slidingly connected to the upper ends of the two backrest bars (2). 3. The folding chair according to claim 2, wherein a guide rod (4) parallel to the backrest rod (2) is installed on the rear side of the upper end of the backrest rod (2), and the limit The two sides of the upper end of the structure are provided with sliding sleeves sleeved on the guide rod (4), and the two ends of the guide rod (4) are connected to the backrest rod (2) through a hoop. 4 . The folding chair according to claim 3 , wherein the limiting structure comprises two rear connecting rods ( 5 ) arranged crosswise, and the middle parts of the two rear connecting rods ( 5 ) are hinged, and the The lower end of the rear connecting rod (5) is connected to the seat surface rod (1) through a universal shaft, the upper end of the rear connecting rod (5) is connected to the sliding sleeve through a universal shaft, and the two rear connecting rods ( 5) Two transverse links (6) hinged in sequence are also installed between them, and a limit stopper (7) is fixedly installed above one of the transverse links (6) to limit the two transverse links (6). ) with the outer ends turned up. 5. The folding chair according to claim 1, further comprising a transition rod (8) and a limit rod (9), the lower end of the backrest rod (2) being hinged to the upper end of the transition rod (8) , the lower end of the transition rod (8) is hinged to the seat surface rod (1), the upper end of the limit rod (9) is hinged to the lower end of the transition rod (8), and the upper end of the limit rod (9) is hinged to the lower end of the transition rod (8). The lower end is hinged to the middle part behind the support structure on the same side, and the upper end of the limiting rod (9) is installed with a limiting block. 6 . The folding chair according to claim 1 , further comprising two front connecting rods ( 10 ) arranged in a cross, the middle parts of the two front connecting rods ( 10 ) are hinged, and the front connecting rods ( The upper end of 10) is connected to the front end of the seat surface rod (1) through a universal shaft, and the lower end of the front connecting rod (10) is connected to the lower end in front of the support structure through a universal shaft. 7. The folding chair according to any one of claims 1 to 6, wherein the support structure on each side comprises two legs (11) arranged in front and rear, and the two legs (11) The upper end of the seat is hinged, and the middle part of the front leg (11) is hinged to the middle part of the seat surface rod (1). 8 . The folding chair according to claim 7 , wherein the outriggers ( 11 ) are telescopic rods nested inside and outside, and the lower ends of the outer rods of the telescopic rods are provided with locking and positioning mechanisms, so that A support plate (12) is installed on the lower end of the inner rod of the telescopic rod. 9. The folding chair according to claim 8, wherein the inner rod is connected to the support plate (12) through a joint bearing. 10 . The folding chair according to claim 9 , wherein a spring is provided inside the telescopic rod. 11 .

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