Portable chair

Abstract

The utility model discloses a portable chair which comprises a chair body, and the chair body comprises a main support frame, an auxiliary support frame, a seat plate and a backrest, the main supporting frame comprises two main supporting legs which are arranged oppositely, and the lower ends of the two main supporting legs are fixedly connected through a main connecting rod; the auxiliary supporting frame comprises two auxiliary supporting legs which are arranged oppositely, and the lower ends of the two auxiliary supporting legs are fixedly connected through an auxiliary connecting rod; the two sides of the seat plate are hinged to the main supporting legs through hinged shafts, and the two ends of the seat plate are connected with the auxiliary supporting legs through locking structures. A main support is fixed to the main supporting leg and hinged to the auxiliary supporting leg through a hinged shaft. Backrest frames are fixed to the two sides of the backrest and connected with the main supporting legs through rotation limiting structures. The portable chair has the advantages that the backrest can be folded, the structure is simple and stable, and the occupied space is small.

Description

Technical Field

[0001] The utility model relates to the technical field of chairs, in particular to a portable chair. Background Art

[0002] A chair is a piece of furniture used in daily life. It is a seat with a backrest. In order to make it easier to carry, a foldable chair is often used.

[0003] The structure of the foldable chair currently in use mainly includes a main rod and a secondary rod connected in a cross-rotating manner, a backrest is fixed on the main rod, and a seat is rotatably installed between the main rod and the secondary rod. During the folding process, the backrest is always fixed to the upper end of the main rod. Even after folding, it occupies a large space and cannot meet the requirements of portability. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by this patent application is how to provide a portable chair with a foldable backrest, a simple and stable structure, and a small space occupation.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A portable chair comprises a chair body, wherein the chair body comprises a main support frame, a secondary support frame, a seat plate and a backrest;

[0007] The main support frame includes two main support legs arranged opposite to each other, and the lower ends of the two main support legs are fixedly connected by a main connecting rod; the auxiliary support frame includes two auxiliary support legs arranged opposite to each other, and the lower ends of the two auxiliary support legs are fixedly connected by a auxiliary connecting rod; the two sides of the seat plate are hinged to the main support legs through hinge shafts, and the two ends of the seat plate are connected to the auxiliary support legs through a locking structure; the main support legs are fixed with main supports, and the main supports and the auxiliary support legs are hinged with hinge shafts; backrest frames are fixed on both sides of the backrest, and the backrest frames are connected to the main support legs through a rotation limiting structure.

[0008] In this way, when the portable chair is folded, the locking structure is unlocked, and the seat can rotate freely around the hinge between it and the main support leg. After the locking structure is unlocked, the seat rotates downward, and the secondary support leg rotates around the hinge between it and the main support leg until it fits with the main support leg. Then the backrest is rotated and rotated downward, which can greatly reduce the space occupied by the chair after folding and make it easier to carry.

[0009] Wherein, the rotation limiting structure includes an upper support fixedly mounted on the backrest frame, the backrest frame includes a supporting portion and an abutting portion, the backrest is fixedly connected to the supporting portion, and the abutting portion can be rotated to abut against the main support leg.

[0010] The locking structure includes two latches, and sockets for plugging with the latches are provided on both sides of the seat plate. The latches are connected to the auxiliary support legs through a connecting assembly.

[0011] Among them, the connecting component includes a secondary stepped hole opened on the auxiliary support leg and the small diameter section of the secondary stepped hole is located on the inner side. The pin is a secondary stepped shaft, and the secondary stepped shaft is plugged into the secondary stepped hole. A ball head is fixed to the outer end of the secondary stepped shaft.

[0012] Among them, the small diameter section of the secondary stepped shaft is sleeved with a tension spring, and the tension spring is located in the large diameter section of the secondary stepped hole. The outer end of the tension spring is fixedly connected to the large diameter section of the secondary stepped shaft, and the inner end of the tension spring is fixedly connected to the secondary stepped hole.

[0013] In summary, the portable chair has the advantages of being able to fold the backrest, having a simple and stable structure, and taking up little space. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of a portable chair.

[0015] Figure 2 for Figure 1 Schematic diagram of the expansion.

[0016] Figure 3 for Figure 1 's split diagram.

[0017] Figure 4 for Figure 3 Enlarged schematic diagram of point A in the middle. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below with reference to the accompanying drawings. In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional terms such as "upper, lower" and "top, bottom" are generally based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. Unless otherwise indicated, these directional terms do not indicate or imply that the devices or components referred to must have a specific direction or be constructed and operated in a specific direction, and therefore should not be understood as limiting the scope of protection of the present invention; the directional terms "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0019] like Figure 1-4 As shown, a portable chair includes a chair body, wherein the chair body includes a main support frame, a secondary support frame, a seat plate 1 and a backrest 2;

[0020] The main support frame includes two main support legs 3 arranged opposite to each other, and the lower ends of the two main support legs are fixedly connected by a main connecting rod 4; the auxiliary support frame includes two auxiliary support legs 5 arranged opposite to each other, and the lower ends of the two auxiliary support legs are fixedly connected by a auxiliary connecting rod 6; the two sides of the seat plate are hinged to the main support legs through a hinge shaft, and the two ends of the seat plate are connected to the auxiliary support legs through a locking structure; the main support legs are fixed with a main support 7, and the main support and the auxiliary support legs are hinged with a hinge shaft; backrest frames 8 are fixed on both sides of the backrest, and the backrest frames are connected to the main support legs through a rotation limiting structure.

[0021] In this way, when the portable chair is folded, the locking structure is unlocked, and the seat can rotate freely around the hinge between it and the main support leg. After the locking structure is unlocked, the seat rotates downward, and the secondary support leg rotates around the hinge between it and the main support leg until it fits with the main support leg. Then the backrest is rotated and rotated downward, which can greatly reduce the space occupied by the chair after folding and make it easier to carry.

[0022] When unfolding, the auxiliary supporting legs move away from the main supporting legs, and then the seat is rotated, and the seat and the auxiliary supporting legs are locked and connected using the locking structure. Then, the backrest is rotated outward, and the position of the backrest is limited by rotating the limiting structure, so that the chair can be opened and used.

[0023] In practice, the rotation limiting structure includes an upper support 11 fixedly mounted on the backrest frame. The backrest frame includes a support portion 12 and an abutment portion 13. The backrest is fixedly connected to the support portion, and the abutment portion can be rotated to abut against the main support leg. The upper support forms an abutment portion with the end of the backrest frame away from the backrest. When the backrest rotates outward, the abutment portion abuts against the main support leg, thereby limiting the rotation angle of the backrest.

[0024] In practice, the locking structure includes two latches 14, and sockets 15 are provided on both sides of the seat plate to engage with the latches. The latches are connected to the auxiliary support legs through a connecting assembly. By inserting the latches into the sockets, the ends of the seat plate are supported and locked in position, making it easy to use.

[0025] During implementation, the connecting assembly includes a secondary step 16 formed on the secondary support leg, with the smaller diameter section of the secondary stepped hole located on the inner side. The latch is a secondary stepped shaft that plugs into the secondary stepped hole. A ball head 17 is fixed to the outer end of the secondary stepped shaft. Holding the ball head facilitates movement of the latch, and the secondary stepped hole, in conjunction with the secondary stepped shaft, facilitates placement of the latch.

[0026] During implementation, a tension spring 18 is sleeved around the smaller diameter section of the secondary stepped shaft. This tension spring is located within the larger diameter section of the secondary stepped hole. The outer end of the tension spring is fixedly connected to the larger diameter section of the secondary stepped shaft, while the inner end of the tension spring is fixedly connected to the secondary stepped hole. The tension spring ensures that the latch remains stable within the socket when open. To retract the latch, the ball head is pulled outward, moving the latch away from the socket until it disengages, allowing the seat to rotate.

[0027] Specifically, the length of the large diameter section of the secondary stepped hole is greater than the length of the large diameter section of the secondary stepped shaft, which facilitates the placement of the tension spring.

[0028] Finally, it should be noted that those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A portable chair, comprising a chair body, characterized in that: The chair body comprises a main support frame, a secondary support frame, a seat plate and a backrest; The main support frame includes two main support legs arranged opposite to each other, and the lower ends of the two main support legs are fixedly connected by a main connecting rod; the auxiliary support frame includes two auxiliary support legs arranged opposite to each other, and the lower ends of the two auxiliary support legs are fixedly connected by a auxiliary connecting rod; the two sides of the seat plate are hinged to the main support legs through hinge shafts, and the two ends of the seat plate are connected to the auxiliary support legs through a locking structure; the main support legs are fixed with main supports, and the main supports and the auxiliary support legs are hinged with hinge shafts; backrest frames are fixed on both sides of the backrest, and the backrest frames are connected to the main support legs through a rotation limiting structure.

2. A portable chair according to claim 1, characterized in that: The rotation limiting structure includes an upper support fixedly mounted on a backrest frame. The backrest frame includes a supporting portion and an abutting portion. The backrest is fixedly connected to the supporting portion. The abutting portion can be rotated to abut against the main support leg.

3. A portable chair according to claim 2, characterized in that: The locking structure includes two latches, and sockets for plugging and cooperating with the latches are provided on both sides of the seat plate. The latches are connected to the auxiliary support legs through a connecting assembly.

4. A portable chair according to claim 3, characterized in that: The connecting assembly includes a secondary stepped hole opened on the auxiliary support leg and the small diameter section of the secondary stepped hole is located on the inner side. The pin is a secondary stepped shaft, which is plugged into the secondary stepped hole, and a ball head is fixed to the outer end of the secondary stepped shaft.

5. A portable chair according to claim 4, characterized in that: The small diameter section of the secondary stepped shaft is sleeved with a tension spring, which is located in the large diameter section of the secondary stepped hole. The outer end of the tension spring is fixedly connected to the large diameter section of the secondary stepped shaft, and the inner end of the tension spring is fixedly connected to the secondary stepped hole.

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