Folding chair

Abstract

To improve the stability of folding chairs. [Solution] The folding chair is equipped with a tension frame 6 at the back of the chair and a horizontal bar 7 for fixing the frame 6 to the chair.

Description

Technical Field

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[0001] The present invention relates to a folding chair.

Background Art

[0002] Folding chairs used for fishing etc. are often small so that they can be easily carried.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Therefore, it is not easy to be stable when sitting. For example, when fishing etc., when the wind or waves are high, there is a risk of falling backward with the current folding chair. Also, when stretching the back etc. while sitting, it becomes unstable.

Means for Solving the Problems

[0004] The folding chair includes a strut frame and a cross bar for fixing the frame and the chair at the back thereof.

Effects of the Invention

[0005] Thereby, the stability is enhanced. For example, even if the center of gravity is moved to the back of the folding chair, the folding chair is not likely to fall. Therefore, especially when fishing on a boat, even if the boat is swayed by waves, the folding chair is not likely to fall.

Brief Description of the Drawings

[0006] [Figure 1] Schematic external perspective view of a conventional folding chair. [Figure 2] Schematic external perspective view of a folding chair with anti - tipping function. [Figure 3] Schematic top - view of a conventional folding chair. [Figure 4] Diagram schematically showing the folding process of a folding chair with anti - tipping function. [Figure 5] Schematic external perspective view of the strut frame, cross bar and wacker. [Figure 6] A schematic diagram showing the folded state of a folding chair with an anti-tip feature. [Figure 7] A diagram explaining why it is difficult to tip over. [Modes for carrying out the invention]

[0007] In the following description, a folding chair according to one embodiment of the present invention will be referred to as a "folding chair with anti-tipping feature."

[0008] Figure 2 is a schematic perspective view of a folding chair with an anti-tip feature, set up for a person to sit on. Figure 4 is a schematic diagram showing the folding process of the folding chair with an anti-tip feature. For reference, Figures 1 and 3 schematically show a conventional folding chair. The following description is for the folding chair with an anti-tip feature.

[0009] The backrest of the folding chair with an anti-tip feature consists of a backrest frame 1 and a fabric backrest 3. The backrest is not limited to this configuration. For example, the backrest may be made of a plate-like material, and the backrest 3, which covers the gap in the backrest frame 1 from one side to the other and forms the back, does not have to be made of fabric.

[0010] In a folding chair with an anti-tip feature, the area where you sit consists of a fabric seat 2 and a first support frame 4 and a second support frame 5 that support it. In other words, the legs are made up of the first support frame 4 and the second support frame 5. The seat 2 is not limited to being made of fabric. Also, the first support frame 4 and the second support frame 5 may each be made of materials such as aluminum or steel. Not only frames 4 and 5, but all frames in a folding chair with an anti-tip feature may be made of materials such as aluminum or steel.

[0011] The first support frame 4 and the second support frame 5 intersect and are rotatably fixed in place by a screw or the like in the middle. The first support frame 4 and the second support frame 5 can be extended to the length of the seat surface 2.

[0012] The point where the backrest frame 1 and the first support frame 4 intersect is fixed with screws or the like, but because the tip of the backrest frame 1 is curved inward, it will not tilt backward beyond a certain angle.

[0013] The folding chair with the above configuration and anti-tipping feature includes a tension frame 6, a horizontal bar 7 for fixing, and a ring 8 connecting the first support frame 4 and the tension frame 6.

[0014] A horizontal bar 7 is fixed to the rear part of the tension frame 6 for securing it. In addition, a ring 8 is attached to the front part of the tension frame 6 to connect it to the first support frame 4.

[0015] The width of the tension frame 6 may be the width that accommodates the widths of the first support frame 4 and the second support frame 5, or the same width. For example, the tension frame 6 sandwiches the first support frame 4 and the second support frame 5. Also, the depth (length in the longitudinal direction) of the tension frame 6 is longer than the standard distance, which is the distance from the front side (bottom) of the first support frame 4 to the rear side (bottom) of the second support frame 5 when a folding chair with an anti-tipping mechanism is set up for a person to sit on. The extent to which it is longer than the standard distance may be adjusted by a trade-off between stability when seated and the compactness required when folded. The tension frame 6 may have a member that allows for depth adjustment in the depth direction (front-to-back direction).

[0016] The horizontal bar 7, used for fixing, is set inside the second support frame 5. Therefore, when weight is applied to the backrest frame 1, the first support frame 4 lifts upward, and this force is absorbed by the horizontal bar 7 through the second support frame 5, and transmitted to the fixed tension frame 6. The tension frame 6 prevents the chair from tipping backward by pressing down on the ground over a wide area.

[0017] Figure 7 compares the force movement when leaning against the backrest frame 1 between a conventional folding chair and a folding chair with an anti-tip feature.

[0018] In conventional folding chairs, if a backward force is applied to the backrest frame 1, the first support frame 4 may lift up, posing a risk of tipping over.

[0019] On the other hand, in the case of a folding chair with anti-tipping function, the force applied to the first support frame 4 is received by the horizontal bar 7 through the second support frame 5 and transmitted to the strut frame 6. A downward force is applied to the strut frame 6, but since it does not move on the ground or the like, as a result, the entire chair is stabilized.

[0020] FIG. 5 is a view of the folding chair with anti-tipping function during the folding process.

[0021] Tilt the backrest frame 1 forward. Next, close the first support frame 4 and the second support frame 5 until they are parallel (horizontal). Finally, close all, including the strut frame 6. The first support frame 4 and the strut frame 6 are closed while being connected by the bracket 8.

[0022] FIG. 6 is a view after folding.

[0023] On the top, there is the backrest frame 1, below it are the first support frame 4 and the second support frame 5, and at the bottom are the strut frame 6 and the horizontal bar 7. The strut frame 6 protrudes slightly upward, but it does not interfere with carrying.

[0024] The horizontal bar 7 fixed to the strut frame 6 is fixed by an adhesive or welding. The bracket 8 fixing the strut frame 6 and the first support frame 4 can be anything such as a metal fitting, plastic, rubber, etc. Also, the means of fixing the strut frame 6 and the first support frame 4 is not limited to a bracket.

[0025] The material of the strut frame 6 and the horizontal bar 7 for fixing is not limited, such as iron or plastic. The size and length of the strut frame 6 vary depending on the size of the folding chair. An extension frame or bar may be added to the strut frame 6. Also, its length may be changed according to the situation of the user.

[0026] As described above, the tension frame 6 extends outwards from the rear of the chair (for example, extending further back than the backrest in a plan view from above the chair), making it less likely to tip over even when weight is shifted backward. To secure the tension frame 6 to the folding chair, a horizontal bar 7 is fixed to the tension frame 6 and secured so that it catches on the frame at the rear of the chair (so that when the chair is set, the horizontal bar 7 catches on the front of the bottom edge of the second support frame 5). This prevents the bottom edge of the first support frame 4 from lifting up and transmits that force to the tension frame 6, thereby maintaining the stability of the chair. A fixing means (for example, a ring) is attached to connect the front legs of the folding chair to the tension frame 6. Even with the tension frame 6 and the horizontal bar 7 for fixing, the chair can be easily folded.

[0027] The tension frame 6 can be U-shaped or square-shaped. For example, the front edge of the tension frame 6 is necessary because it is fixed to the bottom edge of the first support frame 4, but the rear edge of the tension frame 6 is not necessary. [Explanation of symbols]

[0028] 1 Backrest Frame 2 seats 3 backrests 4. First support frame 5. Second support frame 6-frame support 7 horizontal bars 8 Wakka

Claims

1. In a folding chair having legs composed of a first frame and a second frame, in a set state where the folding is released, the bottom edge of the first frame is located at the front and the bottom edge of the second frame is located at the rear, It comprises a third frame which is a U-shaped or square-shaped frame, The width of the third frame is the same as or longer than the width of the first frame and / or the width of the second frame. The longitudinal length of the third frame is longer than the distance between the bottom of the first frame and the bottom of the second frame in the set state. A folding chair in which the front edge of the third frame is fixed to the bottom edge of the first frame by a fixing means.

2. The third frame is equipped with a horizontal bar fixed to the rear portion of the third frame, extending from one side to the other side of the third frame, In the set state described above, the horizontal bar is hooked onto the bottom edge of the second frame, on the front side of the bottom edge. The folding chair according to claim 1.

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