A folding chair

Abstract

The application provides a folding chair, which comprises an upper hinged seat, a plurality of supporting legs, a lower hinged seat and a plurality of upper supporting rods. In the unfolded state, the lower ends of the supporting legs are unfolded relative to each other, and the upper ends of the upper supporting rods are unfolded relative to each other; in the folded state, the lower ends of the supporting legs are close to each other, the upper ends of the upper supporting rods are close to each other, and the upper hinged seat and the lower hinged seat are far away from each other. The lower hinged seat has a first lower hinged part and a second lower hinged seat part, and the first lower hinged part is higher than the second lower hinged part; the plurality of upper supporting rods comprises a front supporting rod and a backrest rod, the lower end of the front supporting rod is rotationally connected with the first lower hinged part, and the lower end of the backrest rod is rotationally connected with the second lower hinged part. The folding chair of the application is more ergonomic and has better comfort.

Description

Technical Field

[0001] This invention belongs to the field of outdoor products and relates to a folding chair. Background Technology

[0002] Folding chairs are popular for outdoor activities such as camping and picnics because they can be folded down and are easy to carry. A typical folding chair consists of a foldable frame and a fabric cover that extends from the frame to support the body. The frame usually includes multiple pivoting rods that allow it to unfold and fold. To improve comfort, the frame may also include a backrest. However, in traditional folding chairs, the angle of the backrest is often not ideal due to the limited folding size of the frame, resulting in poor comfort. Summary of the Invention

[0003] To address the aforementioned technical problems, the purpose of this invention is to provide an improved folding chair that, while maintaining a small folded volume, has ergonomically designed angles for the front support rod and backrest rod, resulting in better comfort.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A folding chair having an unfolded state and a folded state, the folding chair comprising:

[0006] Upper hinge seat;

[0007] Multiple support legs, each having an upper end rotatably connected to the upper hinge seat and a lower end for supporting on the ground;

[0008] The lower hinge seat is located below the upper hinge seat;

[0009] Multiple upper support rods, the lower end of each upper support rod being rotatably connected to the lower hinge seat;

[0010] Each of the supporting legs is rotatably connected to a corresponding upper support rod at its middle section; when the folding chair is in the unfolded state, the lower ends of the multiple supporting legs are unfolded relative to each other, and the upper ends of the multiple upper support rods are unfolded relative to each other; when the folding chair is in the folded state, the lower ends of the multiple supporting legs are brought together, the upper ends of the multiple upper support rods are brought together, and the upper hinge seat and the lower hinge seat are moved away from each other.

[0011] The lower hinge seat has a first lower hinge portion and a second lower hinge portion, the first lower hinge portion being higher than the second lower hinge portion; the plurality of upper support rods include a front support rod and a backrest rod, the lower end of the front support rod being rotatably connected to the first lower hinge portion, and the lower end of the backrest rod being rotatably connected to the second lower hinge portion.

[0012] Preferably, the angle between the front support rod and the horizontal plane is smaller than the angle between the backrest rod and the horizontal plane.

[0013] In a preferred embodiment, the plurality of support legs and the plurality of upper support rods are arranged alternately.

[0014] In a preferred embodiment, only one first lower hinge or one second lower hinge is provided between two adjacent support legs.

[0015] In a preferred embodiment, the front support rod, the backrest rod, or the support leg is a telescopic rod.

[0016] More preferably, the front support rod includes two interlocking and retractable rods; the backrest rod includes three interlocking and retractable rods; and the support leg includes two interlocking and retractable rods.

[0017] More preferably, the upper hinge seat includes a plurality of radially outwardly extending upper hinge portions, which are spaced apart along the circumferential direction.

[0018] Furthermore, from a top-down perspective, the first lower hinge portion or the second lower hinge portion is located between two adjacent upper hinge portions.

[0019] Furthermore, the shape formed by the orthographic projections of the plurality of said upper hinge seats onto the horizontal plane is axially symmetrical. For example, it is cross-shaped.

[0020] Furthermore, the figure formed by the orthographic projections of the first lower hinge portion and the second lower hinge portion onto the horizontal plane is centrally symmetrical but not axially symmetrical.

[0021] Preferably, when the folding chair is in the folded state, the upper hinge seat and the lower hinge seat are separated from each other.

[0022] In a specific and preferred embodiment, a connecting rod is provided on one of the upper hinge seat and the lower hinge seat, and the other is detachably connected to the connecting rod; when the folding chair is in the unfolded state, the connecting rod is connected between the upper hinge seat and the lower hinge seat; when the folding chair is in the folded state, the connecting rod is separated from the upper hinge seat or the lower hinge seat.

[0023] More preferably, the upper hinge seat or the lower hinge seat is provided with a insertion slot for inserting the connecting rod; when the folding chair is in the unfolded state, one end of the connecting rod is inserted into the insertion slot; when the folding chair is in the folded state, the connecting rod is disengaged from the insertion slot.

[0024] In another specific and preferred embodiment, when the folding chair is in the unfolded state, the upper hinge seat and the lower hinge seat abut against each other; when the folding chair is in the folded state, the upper hinge seat and the lower hinge seat are separated.

[0025] More preferably, one of the upper hinge seat and the lower hinge seat is provided with a insertion groove, and the other component is provided with a insertion part; when the folding chair is in the unfolded state, the insertion part is inserted into the insertion groove; when the folding chair is in the folded state, the insertion part is disengaged from the insertion groove.

[0026] Furthermore, each of the supporting legs is provided with a foot pad at its lower end, the foot pad having a supporting surface, and when the folding chair is in the unfolded state, the supporting surfaces of each of the foot pads are located in the same plane.

[0027] In a preferred embodiment, the upper support rod has a connecting sleeve, which is rotatably connected to the support leg.

[0028] The present invention adopts the above solution, which has the following advantages compared with the prior art:

[0029] The folding chair of the present invention has a first lower hinge and a second lower hinge arranged at different heights (the first lower hinge is higher than the second lower hinge), and the backrest rod has a smaller tilt angle (i.e., closer to the vertical plane), which provides better support for the user's back; the front support rod has a larger tilt angle (i.e., closer to the horizontal plane), and the distance between the front support rod and the backrest rod is increased; while ensuring convenient folding and a small folded size, it conforms to ergonomics and improves user comfort. Attached Figure Description

[0030] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A perspective view of a folding chair in its unfolded state according to Embodiment 1 of the present invention is shown, wherein the front support rod, backrest rod and support legs are not retracted;

[0032] Figure 2 A perspective view of a folding chair in its unfolded state according to Embodiment 1 of the present invention is shown, wherein the front support rod and backrest rod are not retracted, and the support legs are retracted.

[0033] Figure 3 A cross-sectional view of a folding chair in its unfolded state according to Embodiment 1 of the present invention is shown;

[0034] Figure 4 A cross-sectional view of a folding chair in a folded state according to Embodiment 1 of the present invention is shown, wherein the support legs are not retracted;

[0035] Figure 5 A perspective view of a folding chair in a folded state according to Embodiment 1 of the present invention is shown;

[0036] Figure 6 A perspective view of a folding chair in its unfolded state according to Embodiment 2 of the present invention is shown, wherein the front support rod, backrest rod and support legs are not retracted;

[0037] Figure 7 A perspective view of a folding chair in its unfolded state according to Embodiment 2 of the present invention is shown, wherein the front support rod and backrest rod are not retracted, and the support legs are retracted.

[0038] Figure 8 A cross-sectional view of a folding chair in its unfolded state according to Embodiment 2 of the present invention is shown;

[0039] Figure 9 A cross-sectional view of a folding chair in a folded state according to Embodiment 2 of the present invention is shown, wherein the support legs are not retracted.

[0040] in,

[0041] 11. Upper hinge seat; 111. Upper hinge part; 12. Support leg; 121. Upper end; 13. Lower hinge seat; 131. First lower hinge part; 132. Second lower hinge part; 14. Upper support rod; 141. Front support rod; 142. Backrest rod; 143. Connecting sleeve; 15. Rod;

[0042] 2. Connecting rod;

[0043] 3. Foot pads; 31. Supporting surface. Detailed Implementation

[0044] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0045] Example 1

[0046] Reference Figures 1 to 5 As shown, this embodiment provides an outdoor folding chair, which has the following features: Figure 1 The unfolded state shown and as Figure 5The chair is shown in its folded state. It includes an upper hinge seat 11, multiple support legs 12, a lower hinge seat 13, and multiple upper support rods 14. The chair also includes a fabric cover attached to the upper support rods 14. When the chair is unfolded, the fabric cover is held open by the upper support rods 14 to support the user.

[0047] Furthermore, the upper hinge seat 11 includes a plurality of radially outwardly extending upper hinge portions 111, which are spaced apart along the circumferential direction of the upper hinge seat 11. Each support leg 12 has an upper end portion 121 rotatably connected to the upper hinge seat 11 and a lower end portion for supporting on the ground. The lower hinge seat 13 is located below the upper hinge seat 11. The lower end portion of each upper support rod 14 is rotatably connected to the lower hinge seat 13. The middle portion of each support leg 12 is also rotatably connected to a corresponding upper support rod 14, and the plurality of support legs 12 and the plurality of upper support rods 14 are staggered. Specifically, the upper support rod 14 has a connecting sleeve 143, which is rotatably connected to the support leg 12.

[0048] Furthermore, referring to Figure 1 and Figure 2 As shown, the lower hinge seat 13 has a first lower hinge portion 131 and a second lower hinge portion 132. The first lower hinge portion 131 is higher than the second lower hinge portion 132. Only one first lower hinge portion 131 or one second lower hinge portion 132 is provided between two adjacent support legs 12. In a top view, the first lower hinge portion 131 or the second lower hinge portion 132 is located between two adjacent upper hinge portions 111.

[0049] The multiple upper support rods 14 include two front support rods 141 and two backrest rods 142. The lower end of each front support rod 141 is rotatably connected to the first lower hinge 131, and the lower end of each backrest rod 142 is rotatably connected to the second lower hinge 132. This makes the inclination of the front support rods 141 less than that of the backrest rods 142, which is more ergonomic and more comfortable when using the folding chair.

[0050] It should also be noted that an upper receiving groove is formed between any two adjacent upper hinge portions 111. When the folding chair is in the folded state, the upper support rod 14 moves closer to the upper hinge seat 11 and is received in the upper receiving groove. Similarly, lower receiving grooves are formed between adjacent first lower hinge portions 131, between adjacent second lower hinge portions 132, and between the first lower hinge portion 131 and the second lower hinge portion 132. When the folding chair is in the folded state, the support leg 12 moves closer to the upper hinge seat 11 and is received in the lower receiving groove. Furthermore, the "rotational connection" mentioned above specifically refers to a pivot connection.

[0051] Each support leg 12 has a foot pad 3 at its lower end. The foot pad 3 has a supporting surface 31, which is preferably a plane. When the folding chair is in the unfolded state, the supporting surfaces 31 of each foot pad 3 are located in the same plane (preferably a horizontal plane).

[0052] Each front support rod 141, backrest rod 142, or support leg 12 is a telescopic rod. Specifically, refer to... Figure 1 As shown, the front support rod 141 includes two interlocking and retractable rods 15, the backrest rod 142 includes three interlocking and retractable rods 15, and the support leg 12 includes two interlocking and retractable rods 15. Thus, the folding chair can adaptively adjust its height and has a small volume after being folded and stored.

[0053] Reference Figure 3 and Figure 4 As shown, a connecting rod 2 is provided on one of the upper hinge seat 11 and the lower hinge seat 13, and the other is detachably connected to the connecting rod 2. Specifically, in this embodiment, the connecting rod 2 is provided on the upper hinge seat 11, and the connecting rod 2 is detachably connected to the lower hinge seat 13. For example, the lower hinge seat 13 is provided with a insertion groove, and the lower end of the connecting rod 2 can be detachably inserted into the insertion groove. When the folding chair is in the unfolded state, the lower end of the connecting rod 2 is inserted into the insertion groove; when the folding chair is in the folded state, the lower end of the connecting rod 2 is disengaged from the insertion groove.

[0054] When the folding chair is in the unfolded state, the lower ends of the multiple support legs 12 unfold relative to each other, the upper ends of the multiple upper support rods 14 unfold relative to each other, and the connecting rod 2 connects the upper hinge seat 11 and the lower hinge seat 13; specifically, the lower end of the connecting rod 2 is inserted into the slot of the lower hinge seat 13. When the folding chair is in the folded state, the lower ends of the multiple support legs 12 are close together, the upper ends of the multiple upper support rods 14 are close together, the connecting rod 2 and the lower hinge seat 13 are separated, and the upper hinge seat 11 and the lower hinge seat 13 are relatively far apart; specifically, the lower end of the connecting rod 2 is disengaged from the slot of the lower hinge seat 13.

[0055] In this embodiment, there are four support legs 12 and four upper support rods 14. Both the upper support rods 14 and the support legs 12 have rods 15 that can be nested together and are relatively telescopic. This results in a smaller volume when the folding chair is extended and folded, reducing packaging size. By setting an upper hinge seat 11 and a lower hinge seat 13 at the center of the folding chair, the support legs 12 and upper support rods 14 are connected respectively. Multiple support legs 12 and multiple upper support rods 14 are staggered, meaning that one upper support rod 14 is accommodated between every two support legs 12, making efficient use of space and resulting in a smaller volume when folded. The upper hinge seat 11 is equipped with a connecting rod 2, and the lower hinge seat 13... It is detachably connected to the connecting rod 2. In the unfolded state, the connecting rod 2 is connected between the upper hinge seat 11 and the lower hinge seat 13, which has good structural stability. The first lower hinge part and the second lower hinge part are set in a staggered manner. The tilt angle of the backrest rod is small (i.e., it is closer to the vertical plane), which can provide better support for the user's back. The tilt angle of the front support rod is large (i.e., it is closer to the horizontal plane). The distance between the front support rod and the backrest rod is increased, which improves the comfort of use.

[0056] In this embodiment, when the folding chair is in the unfolded state, the lower ends of the multiple support legs 12 are unfolded relative to each other, and the upper ends of the multiple upper support rods 14 are unfolded relative to each other. The connecting rod 2 connects the upper hinge seat 11 and the lower hinge seat 13. When the folding chair changes from the unfolded state to the folded state, pulling the hinge seat 11 upward will cause the support legs 12 and the upper support rods 14 to flip accordingly (e.g., Figure 4 (As shown), then retract the rods 15 of each support leg 12 and each upper support rod 14 to... Figure 5 As shown, the volume is relatively small when folded and stored.

[0057] Example 2

[0058] The difference between this embodiment and Embodiment 1 is that the upper hinge seat 11 and the lower hinge seat 13 are not directly connected by any rods; otherwise, they are basically the same as in Embodiment 1. (Refer to...) Figures 6 to 9 As shown, the middle of the upper hinge seat 11 extends downward, and the middle of the lower hinge seat 13 extends upward. Apart from multiple upper support rods 14 and multiple support legs 12, there are no other connecting parts between the upper hinge seat 11 and the lower hinge seat 13. When the folding chair is in such a state... Figure 8 In the unfolded state shown, the upper hinge seat 11 and the lower hinge seat 13 abut against each other; more specifically, the middle portions of the upper hinge seat 11 and the middle portions of the lower hinge seat 13 abut against each other; the folding chair, as shown... Figure 9 As shown, in the folded state, the upper hinge seat 11 and the lower hinge seat 13 are separated.

[0059] In some other embodiments, the middle portion of the upper hinge seat 11 extends downward and is provided with an insertion groove, while the middle portion of the lower hinge seat 13 extends upward to form an insertion part. When the folding chair is in the unfolded state, the insertion part is inserted into the upper insertion groove; when the folding chair is in the folded state, the insertion part is disengaged from the insertion groove.

[0060] As indicated in this specification and claims, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements. The term "and / or" as used herein includes any combination of one or more of the associated listed items.

[0061] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. Furthermore, the descriptions of "up," "down," "left," and "right" used in this invention are only relative to the relative positional relationships of the various components of the invention in the accompanying drawings.

[0062] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0063] The above embodiments are merely illustrative of the technical concept and features of the present invention, and are preferred embodiments. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and they should not be construed as limiting the scope of protection of the present invention. All equivalent transformations or modifications made according to the principles of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A folding chair having an unfolded state and a folded state, the folding chair comprising: Upper hinge seat; Multiple support legs, each having an upper end rotatably connected to the upper hinge seat and a lower end for supporting on the ground; The lower hinge seat is located below the upper hinge seat; Multiple upper support rods, the lower end of each upper support rod being rotatably connected to the lower hinge seat; Each of the supporting legs is rotatably connected to a corresponding upper support rod at its middle section; when the folding chair is in the unfolded state, the lower ends of the multiple supporting legs are unfolded relative to each other, and the upper ends of the multiple upper support rods are unfolded relative to each other; when the folding chair is in the folded state, the lower ends of the multiple supporting legs are brought together, the upper ends of the multiple upper support rods are brought together, and the upper hinge seat and the lower hinge seat are moved away from each other. The lower hinge seat is characterized in that it has a first lower hinge portion and a second lower hinge portion, both of which are located below the upper hinge seat, with the first lower hinge portion being higher than the second lower hinge portion; the plurality of upper support rods include a front support rod and a backrest rod, the lower end of the front support rod is rotatably connected to the first lower hinge portion, and the lower end of the backrest rod is rotatably connected to the second lower hinge portion; when the folding chair is in use, the angle between the front support rod and the horizontal plane is smaller than the angle between the backrest rod and the horizontal plane, and the backrest rod is configured to support the user's back.

2. The folding chair according to claim 1, characterized in that, The plurality of support legs and the plurality of upper support rods are arranged in an alternating manner, with only one first lower hinge or one second lower hinge between two adjacent support legs.

3. The folding chair according to claim 1, characterized in that, The upper hinge seat includes a plurality of radially outwardly extending upper hinge portions, which are spaced apart along the circumferential direction; in a top view, the first lower hinge portion or the second lower hinge portion is located between two adjacent upper hinge portions; the orthographic projection of the plurality of upper hinge seats on the horizontal plane forms an axisymmetric shape, and the orthographic projection of the first lower hinge portion and the second lower hinge portion on the horizontal plane forms a centrally symmetrical shape that is not axisymmetric.

4. The folding chair according to claim 1, characterized in that, A connecting rod is provided on one of the upper hinge seat and the lower hinge seat, and the other is detachably connected to the connecting rod; when the folding chair is in the unfolded state, the connecting rod is connected between the upper hinge seat and the lower hinge seat; when the folding chair is in the folded state, the connecting rod is separated from the upper hinge seat or the lower hinge seat.

5. The folding chair according to claim 4, characterized in that, The upper hinge seat or the lower hinge seat is provided with a insertion slot for the connecting rod to be inserted; when the folding chair is in the unfolded state, one end of the connecting rod is inserted into the insertion slot; when the folding chair is in the folded state, the connecting rod is disengaged from the insertion slot.

6. The folding chair according to claim 1, characterized in that, When the folding chair is in the unfolded state, the upper hinge seat and the lower hinge seat abut against each other; when the folding chair is in the folded state, the upper hinge seat and the lower hinge seat separate.

7. The folding chair according to claim 6, characterized in that, One of the upper hinge seat and the lower hinge seat is provided with a insertion groove, and the other component is provided with an insertion part; when the folding chair is in the unfolded state, the insertion part is inserted into the insertion groove; when the folding chair is in the folded state, the insertion part is disengaged from the insertion groove.

8. The folding chair according to claim 1, characterized in that, Each of the supporting legs is provided with a foot pad at its lower end. The foot pad has a supporting surface. When the folding chair is in the unfolded state, the supporting surfaces of each of the foot pads are located in the same plane.

9. The folding chair according to claim 1, characterized in that, The backrest rod, the front support rod, or the support leg are telescopic rods.

10. The folding chair according to claim 1, characterized in that, The upper support rod has a connecting sleeve, and the connecting sleeve is rotatably connected to the support leg.

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