Folding chair

Abstract

The utility model relates to a chair, and discloses a folding chair, which comprises a first support plate, a second support plate and a seat plate. The folded state of the folding chair is designed into a plate shape, and the unfolded chair state is designed on the basis. In the chair state, the first supporting plate and the second supporting plate are used as front and rear ground contact supports, and the seat plate and the first supporting plate are connected through the limiting groove and the limiting protrusion. After the seat plate is connected with the first supporting plate, a triangular structure is formed among the first supporting plate, the second supporting plate and the seat plate, so that the folding chair is stably in a folded state, the bearing capacity of the seat plate is ensured, and the normal use function of a chair is achieved. Compared with the prior art, the folding chair has the advantages that after the folding chair is converted into the folded state from the chair state, the folding chair is regular in shape, small in occupied space and convenient to store, package, move, transport and the like; 2, the state conversion operation of the folding chair is more convenient; and 3, the structure is simpler and more compact, and the cost is lower.

Description

Technical Field

[0001] This utility model relates to chairs, and more particularly to a folding chair. Background Technology

[0002] A chair is a common piece of furniture, generally consisting of legs for support, a seat for sitting, and a backrest for leaning back. A folding chair, while maintaining its normal functionality, is designed with modifications to the connections between the legs, seat, and backrest. These modifications, along with appropriate connecting and limiting components, allow the chair to function not only as a normal chair but also as a folded chair. In the folded state, the chair's height and volume are significantly reduced, allowing it to be placed upright against a wall, freeing up space. The folded state also makes storage, packaging, moving, and transportation much more convenient.

[0003] The existing problems with folding chairs include: the shape of the folding chair is not regular enough when folded, and the structure of the folding chair is relatively complex. Utility Model Content

[0004] This application provides a folding chair that solves the problems mentioned in the background art, making it easier to store, pack, move, and transport when folded.

[0005] This application provides a folding chair, comprising:

[0006] The first support plate has a first groove, and the first groove has inwardly extending extensions on both sides opposite to each other in the lateral direction, and the extensions have limiting protrusions.

[0007] The second support plate is divided longitudinally into an installation area and a connection area; the installation area has a second groove; the connection area is hinged to the first support plate around the transverse axis at a position away from the installation area, so that the second support plate can be in the first groove or extend from the first surface of the first support plate.

[0008] The seat plate has two limiting grooves on its first surface; it is hinged around the transverse axis to the mounting area near the connection area, so that the seat plate can be in the second groove or extend from the second surface of the second support plate.

[0009] Wherein: when the second support plate is in the first groove and the seat plate is in the second groove, the folding chair is in a folded state in the shape of a sheet; when the second support plate extends out of the first support plate and the seat plate extends out of the second support plate, the seat plate can be supported by the two extensions and the two limiting protrusions can enter the two limiting grooves respectively, and the folding chair is in a chair state with the second side of the seat plate facing upward.

[0010] In some embodiments, it further includes: a backrest panel hinged to the first support plate about a transverse axis; capable of being positioned within the first groove.

[0011] In some embodiments, a limiting member is provided between the backrest panel and the first support plate. The limiting member is used to limit the swing position of the backrest panel to prevent hand pinching between the backrest panel and the first support plate.

[0012] In some embodiments, the second support plate can also extend from the second side of the first support plate; the seat plate can also extend from the first side of the second support plate; the second side of the seat plate also has two limiting grooves, and the folding chair can also be in a chair state with the first side of the seat plate facing upwards.

[0013] In some embodiments, the seat plate has a first hole for a connecting strap to pass through to secure the first support plate, the second support plate, and the seat plate in their folded state.

[0014] In some embodiments, the hinges between the second support plate and the first support plate, the hinges between the seat plate and the second support plate, and the hinges between the backrest plate and the first support plate are all damped.

[0015] In some embodiments, at least one of the first support plate and the backrest plate has a second hole for wall mounting.

[0016] In some embodiments, the limiting member includes: an arcuate groove disposed on one of the first support plate and the backrest plate, and a plug-in post fixedly connected to the other of the first support plate and the backrest plate.

[0017] In some embodiments, the hinge includes: a connecting pin and an annular block fitted onto the connecting pin and made of a compressible material.

[0018] In some embodiments, the first support plate, the second support plate, the seat plate, and the backrest plate are made of wood or metal.

[0019] In summary, this application discloses a folding chair, comprising: a first support plate, a second support plate, and a seat plate. The folded state of the chair is designed as a sheet material, and the unfolded chair state is designed based on this. In the chair state, the first and second support plates serve as supports touching the ground at the front and rear, respectively, and the seat plate and the first support plate are connected by a limiting groove and a limiting protrusion. After the seat plate is connected to the first support plate, a triangular structure is formed between the first and second support plates and the seat plate, ensuring the stability of the folding chair in the folded state and the load-bearing capacity of the seat plate, thus enabling normal chair use. The beneficial effects are: 1. After converting from the chair state to the folded state, the folding chair has a regular shape and occupies less space, making it easier to store, pack, move, and transport; 2. The operation of converting the folding chair state is more convenient; 3. The structure is simpler and more compact, and the cost is lower. Attached Figure Description

[0020] To better illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0021] Figure 1 This is a schematic diagram of the folded state of an embodiment without a backrest.

[0022] Figure 2 This is a side view of the chair with the second side of the seat facing upwards.

[0023] Figure 3 A schematic diagram of the folded state of an embodiment with a backrest panel added;

[0024] Figure 4 A schematic diagram of a chair in a configuration with a backrest added;

[0025] Figure 5 This is a schematic diagram illustrating the process of a chair transitioning from a folded-up state to a chair with the second side of the seat facing upwards.

[0026] Figure 6 This is a schematic diagram illustrating the process of a chair transitioning from a folded-up state to a chair with the seat panel facing upwards.

[0027] Figure 7 This is a schematic diagram of the limiting component between the backrest panel and the first support plate;

[0028] Figure 8 for Figure 7 Sectional view along the middle AA;

[0029] Figure 9 This is a schematic diagram of a hinged component consisting of a connecting pin and a ring block.

[0030] In the picture,

[0031] 1. First support plate; 1a. First groove; 1b. Extension; 1c. Limiting protrusion;

[0032] 2. Second support plate; 21. Mounting area; 21a. Second groove; 22. Connection area;

[0033] 3. Seat plate; 3a. Limiting groove; 3b. First hole;

[0034] 4. Backrest panel; 4a. Second hole;

[0035] 5. First page;

[0036] 6. Second page;

[0037] 7. Hinge; 71. Connecting pin; 72. Annular block;

[0038] 8. Limiting component; 81. Arc-shaped groove; 82. Insertion post. Specific Implementation

[0039] The following description is provided in conjunction with the accompanying drawings, which are for illustrative purposes only and not strictly to scale. Unless otherwise defined, the technical or scientific terms used in this disclosure should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes. Unless otherwise specified, the embodiments in this application can be combined with each other.

[0040] Please see Figure 1 and Figure 2 A folding chair includes: a first support plate 1, a second support plate 2, and a seat plate 3. When the chair is folded up, the first support plate 1, the second support plate 2, and the seat plate 3 overlap, forming a sheet material. Correspondingly, the first support plate 1, the second support plate 2, and the seat plate 3 can be obtained by cutting from a single sheet material.

[0041] For ease of subsequent explanation, the first surface 5 of the first support plate 1, the first surface 5 of the second support plate 2, and the first surface 5 of the seat plate 3 are set on the same side, and the second surface 6 of the first support plate 1, the second surface 6 of the second support plate 2, and the second surface 6 of the seat plate 3 are set on the same side relative to the first surface 5.

[0042] The first support plate 1 has a first groove 1a, and the first groove 1a has an inwardly extending extension 1b on both sides opposite to each other in the lateral direction. The extension 1b has a limiting protrusion 1c.

[0043] The second support plate 2 is longitudinally divided into an installation area 21 and a connecting area 22. The connecting area 22 is hinged to the first support plate 1 around a transverse axis at a position away from the installation area 21. The hinge can be achieved by setting a connecting pin 71 as a hinge element 7 between the first support plate 1 and the second support plate 2.

[0044] The second support plate 2 is hinged so that it can be positioned within the first groove 1a. That is to say, the specific hinge position of the first support plate 1 is the inner wall of the first groove 1a; when the folding chair is folded up, the second support plate 2 is positioned within the first groove 1a, so that the first support plate 1 and the second support plate 2 overlap to form a single piece of material. Accordingly, the second support plate 2 needs to have recesses on both sides opposite each other in the lateral direction, and the two recesses correspond to the two extensions 1b respectively.

[0045] The second support plate 2 is hinged to extend from the first surface 5 of the first support plate 1. Because the specific hinge position of the second support plate 2 is such that the connecting area 22 is away from the mounting area 21, one side of the hinge position comprises a small portion of the connecting area 22, and the other side comprises the majority of the connecting area 22 and the mounting area 21. Here, "extending" means that the side containing the majority of the connecting area 22 and the mounting area 21 extends from the first surface 5 of the first support plate 1. In other words, with the second support plate 2 initially positioned within the first groove 1a, at least the swing of the mounting area 21 towards the first surface 5 of the first support plate 1 is not restricted in either of the two swing directions of the second support plate 2.

[0046] The mounting area 21 of the second support plate 2 also has a second groove 21a.

[0047] The first surface 5 of the seat plate 3 has two limiting grooves 3a, which are used to cooperate with two limiting protrusions 1c. The seat plate 3 is hinged around the transverse axis to the mounting area 21 near the connecting area 22. The hinge can be achieved by setting a connecting pin 71 as a hinge element 7 between the second support plate 2 and the seat plate 3.

[0048] The seat plate 3 is hinged so that it can be positioned within the second groove 21a. In other words, the specific hinge position on the second support plate 2 is the inner wall of the second groove 21a; when the folding chair is folded up, the seat plate 3 is positioned within the second groove 21a, so that the second support plate 2 and the seat plate 3 overlap to form a single piece of material.

[0049] The seat plate 3 is hinged so that it can extend from the second surface 6 of the second support plate 2. Here, "extend" means that the side of the seat plate 3 with the limiting groove 3a extends from the second surface 6 of the second support plate 2. In other words, with the seat plate 3 in the second groove 21a as the initial position, in both swing directions of the seat plate 3, at least the swing of the limiting groove 3a toward the second surface 6 of the second support plate 2 is not restricted.

[0050] When the second support plate 2 extends out of the first support plate 1 and the seat plate 3 extends out of the second support plate 2, the seat plate 3 can be supported by the two extensions 1b and the two limiting protrusions 1c can enter the two limiting grooves 3a respectively, and the folding chair is in the chair state with the second side 6 of the seat plate 3 facing upward.

[0051] Please see Figure 2and Figure 5 The specific process of a folding chair changing from its folded state to its chair state can be described as follows:

[0052] S1. Lift the folded chair from its folded state, so that the side of the first support plate 1 closest to the installation area 21 touches the ground.

[0053] S2. Hold the first support plate 1 with one hand and swing the seat plate 3 with the other hand so that the seat plate 3 extends out from the second side 6 of the second support plate 2.

[0054] S3. Apply a pushing force to the seat plate 3 to make the second support plate 2 swing and extend from the first surface 5 of the first support plate 1. The side of the second support plate 2 closest to the mounting area 21 in the longitudinal direction also touches the ground, while the seat plate 3 is positioned above the two extensions 1b.

[0055] S4. Lower the seat plate 3 so that the two limiting protrusions 1c enter the two limiting grooves 3a.

[0056] The folding chair is designed with a sheet-like shape in its folded state, and its unfolded chair state is designed based on this. In the chair state, a first support plate 1 and a second support plate 2 serve as the two supports touching the ground at the front and rear, respectively. A limiting groove 3a and a limiting protrusion 1c connect the seat plate 3 and the first support plate 1. After the seat plate 3 is connected to the first support plate 1, a triangular structure is formed between the first support plate 1, the second support plate 2, and the seat plate 3, ensuring the stability of the folding chair in the chair state and the load-bearing capacity of the seat plate 3, thus enabling normal chair use. After the folding chair transitions from the chair state to the folded state, the folding chair has a regular shape and occupies less space, making it easy to store, pack, move, and transport.

[0057] Please see Figure 5 and Figure 6 In some embodiments, in addition to the chair state where the second surface 6 of the seat plate 3 faces upward, the folding chair can also be in the chair state where the first surface 5 of the seat plate 3 faces upward. Correspondingly, the second support plate 2 can also extend from the second surface 6 of the first support plate 1, that is, with the second support plate 2 in the first groove 1a as its initial position, neither of the two swing directions of the second support plate 2 is restricted. The seat plate 3 can also extend from the first surface 5 of the second support plate 2, that is, with the seat plate 3 in the second groove 21a as its initial position, neither of the two swing directions of the seat plate 3 is restricted. The second surface 6 of the seat plate 3 also has two limiting grooves 3a, which can be designed as through grooves, penetrating the first surface 5 and the second surface 6 of the seat plate 3.

[0058] In this way, the first surface 5 of the first support plate 1, the second support plate 2, and the seat plate 3 can be designed with one pattern, and the second surface 6 of the first support plate 1, the second support plate 2, and the seat plate 3 can be designed with another pattern. In the two chair states, the two different patterns face the person sitting in the chair, which is equivalent to a folding chair being able to be folded into two chairs with different patterns.

[0059] Please see Figure 3 and Figure 4 In some embodiments, the folding chair further includes a backrest panel 4. The backrest panel 4 is hinged to the first support plate 1 about a transverse axis. Taking the hinge position as the boundary, the backrest panel 4 is divided longitudinally into an upper backrest area and a lower backrest area. The hinge method may be to provide a connecting pin 71 as a hinge element 7 between the first support plate 1 and the backrest panel 4.

[0060] The backrest panel 4 can be located within the first groove 1a. That is to say, the specific hinge position on the first support plate 1 is the inner wall of the first groove 1a; when the folding chair is folded up, the backrest panel 4 is located within the first groove 1a, so that the first support plate 1 and the backrest panel 4 overlap to form a single piece of material. The backrest panel 4, the first support plate 1, the second support plate 2, and the seat panel 3 can still be obtained from a single piece of material.

[0061] If the folding chair can only be in the chair state with the second side 6 of the seat plate 3 facing upwards, then with the backrest plate 4 in the first groove 1a as the initial position, at least the swing of the upper backrest area toward the second side 6 of the first support plate 1 is not restricted in either of the two swing directions of the backrest plate 4.

[0062] If the folding chair can be in a chair state with the second side 6 of the seat panel 3 facing upwards, or in a chair state with the first side 5 of the seat panel 3 facing upwards, then with the backrest panel 4 in the first groove 1a as the initial position, neither of the two swinging directions of the backrest panel 4 is restricted.

[0063] In embodiments without a backrest panel 4, the area above the first groove 1a of the first support plate 1 serves as the backrest in the chair state, and its angle cannot be adjusted. In embodiments with a backrest panel 4, the backrest panel 4, as the backrest, can be adjusted in angle to suit different people's different sitting habits, thus improving comfort.

[0064] Please see Figure 7 and Figure 8 In some embodiments, a limiting member 8 is provided between the backrest panel 4 and the first support plate 1. The function of the limiting member 8 is to limit the swing position of the backrest panel 4 and prevent the backrest panel 4 and the first support plate 1 from pinching the hand.

[0065] During the swinging process of the backrest panel 4, a gap can be formed between the top surface of the backrest panel 4 and the inner top wall of the first groove 1a. If this gap is large enough for a person's hand (especially a child) to stick in, there is a risk of hand injury. The limiting component 8 is designed to prevent the formation of a gap between the top surface of the backrest panel and the inner top wall of the first groove 1a, or to prevent the gap from being large enough for a person to stick in, thereby improving safety.

[0066] The limiting member 8 can be selected from existing limiting methods. A preferred limiting member 8 is also provided below, which includes: an arc-shaped groove 81 and a plug-in post 82. The arc-shaped groove 81 is disposed in one of the first support plate 1 and the backrest plate 4, and the plug-in post 82 is fixedly connected to the other of the first support plate 1 and the backrest plate 4.

[0067] Please see Figure 3 In some embodiments, the seat plate 3 has a first hole 3b, which is a through hole. The function of the first hole 3b is to allow a connecting strap to pass through and bind the first support plate 1, the second support plate 2, and the seat plate 3 in their folded state. The connecting strap can be a cable tie, fabric tape, nylon rope, etc.

[0068] The design of the first hole 3b allows the connecting strap to restrict the swing of the second support plate 2 relative to the first support plate 1 and the swing of the seat plate 3 relative to the second support plate 2 at one time, so that the folding chair can be stably kept in the folded state, making it more convenient to store, pack, and manually pick up and move the folding chair.

[0069] In the embodiment where "the folding chair also includes a backrest panel 4", because the backrest panel 4 is smaller in length than the first support plate 1, the second support plate 2, and the seat plate 3, the folding chair can remain relatively stable in its folded state even without restricting the swing of the backrest panel 4 relative to the first support plate 1. Alternatively, following the design concept of the first hole 3b, a hole can be provided in the backrest panel 4, and a connecting strap can be used to pass through this hole to bind the first support plate 1 and the backrest panel 4 in their folded state.

[0070] Please see Figure 3 In some embodiments, the first support plate 1 has a second hole 4a for wall mounting, i.e., for installing hooks on the wall. When the folding chair is folded up, the second hole 4a is inserted into the hooks. In the embodiment where "the folding chair also includes a backrest plate 4", the second hole 4a can also be provided on the backrest plate 4 or on both the first support plate 1 and the backrest plate 4.

[0071] Alternatively, the second hole 4a can be a blind hole, located on the first surface 5 or the second surface 6, or it can be a through hole. If the second hole 4a is a through hole and is located on the backrest plate 4, then the second hole 4a can also serve as a hole for the connecting strap to pass through and for binding the first support plate 1 and the backrest plate 4 in the folded state.

[0072] Hanging a folded chair on the wall saves space. It also allows you to press the chair against the wall, restricting its unfolding and ensuring it remains stably folded.

[0073] Please see Figure 9 In some embodiments, the hinge 7 between the second support plate 2 and the first support plate 1, and the hinge 7 between the seat plate 3 and the second support plate 2, are both damped. In the embodiment where "the folding chair also includes a backrest plate 4," the hinge 7 between the backrest plate 4 and the first support plate 1 is also damped.

[0074] The hinge can be made using a damped hinge element 7. In conjunction with the hinge method described above, which uses a connecting pin 71 as the hinge element 7, the hinge element 7 can also include: a connecting pin 71 and an annular block 72. The annular block 72 is sleeved on the connecting pin 71, and the annular block 72 is made of a material that can be deformed by compression (e.g., silicone). Taking the hinge between the second support plate 2 and the first support plate 1 as an example, the second support plate 2 and the first support plate 1 respectively compress the annular block 72 from both sides, generating friction.

[0075] Damping allows the folding chair to remain stably folded, making it easier to store, pack, and manually move.

[0076] In some embodiments, the first support plate 1, the second support plate 2, and the seat plate 3 are made of wood or metal. If we consider the embodiment where "the folding chair also includes a backrest plate 4," then the backrest plate 4 is also made of wood or metal.

[0077] The first support plate 1, the second support plate 2, the seat plate 3, and the backrest plate 4 can be made of multi-layer composite wood. This makes it easier to adjust the thickness of the first support plate 1, the second support plate 2, the seat plate 3, and the backrest plate 4.

Claims

1. A folding chair, characterized in that, include: The first support plate (1) has a first groove (1a), and the first groove (1a) has an inwardly extending extension (1b) on both sides opposite to each other in the lateral direction. The extension (1b) has a limiting protrusion (1c). The second support plate (2) is divided longitudinally into: an installation area (21) and a connecting area (22); the installation area (21) has a second groove (21a); ​​the connecting area (22) is hinged to the first support plate (1) around the transverse axis at a position away from the installation area (21), so that the second support plate (2) can be in the first groove (1a) or extend from the first surface (5) of the first support plate (1); The seat plate (3) has two limiting grooves (3a) on its first surface (5); it is hinged about the transverse axis to the mounting area (21) near the connecting area (22), so that the seat plate (3) can be in the second groove (21a) or extend from the second surface (6) of the second support plate (2); in: When the second support plate (2) is in the first groove (1a) and the seat plate (3) is in the second groove (21a), the folding chair is in a folded state in the shape of a board. When the second support plate (2) extends out of the first support plate (1) and the seat plate (3) extends out of the second support plate (2), the seat plate (3) can be supported by the two extensions (1b) and the two limiting protrusions (1c) can enter the two limiting grooves (3a) respectively. The folding chair is in the chair state with the second side (6) of the seat plate (3) facing upward.

2. A folding chair according to claim 1, wherein Also includes: The backrest (4) is hinged to the first support plate (1) around the transverse axis; it can be located in the first groove (1a).

3. A folding chair as claimed in claim 2, characterized in that A limiting member (8) is provided between the backrest (4) and the first support plate (1). The limiting member (8) is used to limit the swing position of the backrest (4) so ​​as to prevent the backrest (4) and the first support plate (1) from pinching the hand.

4. The folding chair of claim 1, wherein, The second support plate (2) can also extend from the second side (6) of the first support plate (1); the seat plate (3) can also extend from the first side (5) of the second support plate (2); the second side (6) of the seat plate (3) also has two limiting grooves (3a), and the folding chair can also be in a chair state with the first side (5) of the seat plate (3) facing upward.

5. The folding chair of claim 1, wherein, The seat plate (3) has a first hole (3b) for the connecting strap to pass through and tie the first support plate (1), the second support plate (2), and the seat plate (3) in the folded state.

6. A folding chair as defined in claim 2, wherein The hinge (7) between the second support plate (2) and the first support plate (1), the hinge (7) between the seat plate (3) and the second support plate (2), and the hinge (7) between the backrest plate (4) and the first support plate (1) are all damped.

7. A folding chair as defined in claim 2, wherein At least one of the first support plate (1) and the backrest plate (4) has a second hole (4a) for wall mounting.

8. The folding chair of claim 3, wherein, The limiting component (8) includes: an arc-shaped groove (81) disposed in one of the first support plate (1) and the backrest plate (4), and a plug-in post (82) fixedly connected to the other of the first support plate (1) and the backrest plate (4).

9. A folding chair as defined in claim 6, wherein The hinge (7) includes: a connecting pin (71) and an annular block (72) fitted onto the connecting pin (71) and made of a material that can be extruded and deformed.

10. The folding chair of claim 2, wherein, The material of the first support plate (1), the second support plate (2), the seat plate (3) and the back plate (4) is wood or metal.

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