Folding chair

Abstract

A folding chair having a deployed state and a folded state is disclosed. The folding chair includes an upper hinge base (11), a plurality of support legs (12), a lower hinge base (13) located below the upper hinge base (11), and a plurality of upper support rods (14) whose lower ends are rotatably connected to the lower hinge base (13). The middle part of each support leg (12) is further connected to a corresponding upper support rod (14) so as to rotate respectively. When the folding chair is in the deployed state, the lower ends of the plurality of support legs (12) are relatively deployed, the upper ends of the plurality of upper support rods (14) are relatively deployed, and the upper hinge base (11) and the lower hinge base (13) are directly or indirectly connected. When the folding chair is in the folded state, the lower ends of the plurality of support legs (12) are close to each other, the upper ends of the plurality of upper support rods (14) are close to each other, and the upper hinge base (11) and the lower hinge base (13) are separated from each other.

Description

Cross-reference to Related Patent Applications

[0001] This application claims priority to Chinese Patent Application No. CN2022228370387, filed on October 27, 2022.

Technical Field

[0002] The present invention belongs to the field of outdoor products and relates to a folding chair.

Background Art

[0003] Folding chairs are used in outdoor activities such as camping and picnics because they are foldable and easy to carry. Generally, a folding chair includes a foldable chair frame and a cloth cover that is disposed on the chair frame and spread on the chair frame to support the human body. Generally, the chair frame includes a plurality of rod members that are pivotally connected to enable relative deployment and folding. However, the current structure of folding chairs is complex and costly.

Summary of the Invention

Problems to be Solved by the Invention

[0004] In order to solve the above technical problems, an object of the present invention is to provide an improved folding chair that can simplify its structure and reduce costs on the premise of ensuring excellent structural stability.

Means for Solving the Problems

[0005] The first aspect of the present invention provides a folding chair having a deployed state and a folded state, the folding chair comprising: a plurality of support legs each having an upper hinge base, an upper end rotatably connected to the upper hinge base, and a lower end for supporting on the ground; a lower hinge base located below the upper hinge base; and a plurality of upper support rods whose lower ends are rotatably connected to the lower hinge base. The middle part of each of the support legs is further connected to one corresponding upper support rod so as to be rotatable. When the folding chair is in the deployed state, the lower ends of the plurality of support legs are relatively deployed, the upper ends of the plurality of upper support rods are relatively deployed, and the upper hinge base and the lower hinge base are directly or indirectly connected. When the folding chair is in the folded state, the lower ends of the plurality of support legs are close to each other, the upper ends of the plurality of upper support rods are close to each other, and the upper hinge base and the lower hinge base are separated from each other.

[0006] In one preferred embodiment, when the folding chair is in the deployed state, the upper hinge base and the lower hinge base are in contact with each other. However, no other intermediate connecting member is provided between the upper hinge base and the lower hinge base, and the upper hinge base and the lower hinge base are directly in contact with or connected to each other, for example, inserted.

[0007] In some embodiments, one of the upper hinge base and the lower hinge base is provided with an insertion groove, and the other is provided with an insertion portion. When the folding chair is in the deployed state, the insertion portion is inserted into the insertion groove, and when the folding chair is in the folded state, the insertion portion is disengaged from the insertion groove.

[0008] In some embodiments, an intermediate portion of the upper hinge base includes a lower extending segment extending downward, the insertion groove is provided in the lower extending segment, an intermediate portion of the lower hinge base has an upper extending segment extending upward, and the insertion portion is formed at an upper end of the upper extending segment. When the folding chair is deployed, the upper hinge base and the lower hinge base are close to each other, and the upper end of the upper extending segment is gradually inserted into the insertion groove of the lower extending segment. When the folding chair is folded, the upper hinge base and the lower hinge base are relatively separated, and the upper end of the upper extending segment gradually disengages from the insertion groove of the lower extending segment.

[0009] In one preferred embodiment, a connecting rod is provided on one of the upper hinge base and the lower hinge base, and the other is removably connected to the connecting rod. When the folding chair is in a deployed state, the connecting rod is connected between the upper hinge base and the lower hinge base. When the folding chair is in a folded state, the connecting rod is separated from the upper hinge base or the lower hinge base.

[0010] More preferably, an insertion groove into which the connecting rod is inserted is provided in the upper hinge base or the lower hinge base. When the folding chair is in a deployed state, one end of the connecting rod is inserted into the insertion groove. When the folding chair is in a folded state, the connecting rod disengages from the insertion groove.

[0011] In one preferred embodiment, the lower hinge base includes a first lower hinge portion and a second lower hinge portion, the first lower hinge portion is 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. However, the first lower hinge portion and the second lower hinge portion are arranged in a stagger pattern (the first lower hinge portion is higher than the second lower hinge portion), and the inclination angle of the backrest rod is small (i.e., close to the vertical plane), so that the user's back can be well supported. The inclination angle of the front support rod is large (i.e., close to the horizontal plane), the distance between the front support rod and the backrest rod is increased, making it convenient to fold and reducing the volume after folding. At the same time, it conforms to ergonomics and improves the comfortable use feeling. Due to the limitation of the requirement for the folding volume of the chair frame, it solves the defect existing in the conventional folding chair that the angle setting of the backrest rod is not sufficiently reasonable and the comfort is poor.

[0012] In one embodiment, the included angle between the front support rod and the horizontal plane is smaller than the included angle between the backrest rod and the horizontal plane.

[0013] In one preferred embodiment, the plurality of support legs and the plurality of upper support rods are arranged in a stagger pattern, and only one of the first lower hinge portion or the second lower hinge portion is provided between two adjacent support legs.

[0014] In one preferred embodiment, the upper hinge base includes a plurality of upper hinge portions extending outward in the radial direction, and the plurality of upper hinge portions are arranged at intervals along the circumferential direction.

[0015] In one embodiment, the upper hinge portion is a hinge groove, and the hinge groove has a lower side and an outer side that are open.

[0016] In one preferred embodiment, in a plan view, the first lower hinge portion or the second lower hinge portion is located between two adjacent upper hinge portions.

[0017] In one preferred embodiment, the pattern formed by the orthographic projection of the plurality of upper hinge bases on a horizontal plane is axially symmetric, and the pattern formed by the orthographic projection of the first lower hinge portion and the second lower hinge portion on a horizontal plane is centrosymmetric and non-axially symmetric.

[0018] In one preferred embodiment, foot pads are provided at the lower ends of the support legs, the foot pads have a support surface, and when the folding chair is in the unfolded state, the support surfaces of the foot pads are located in the same plane.

[0019] In one preferred embodiment, the upper support rod is provided with a connecting sleeve, and the connecting sleeve is connected to the support leg so as to rotate.

[0020] In one preferred embodiment, the front support rod, the backrest rod or the support leg is a telescopic rod.

[0021] In one embodiment, the first lower hinge portion and / or the second lower hinge portion is a hinge groove, and the hinge groove has an upper side and an outer side that are arranged to be open.

Advantages of the Invention

[0022] According to the folding chair of the present invention, after being unfolded, the upper hinge base and the lower hinge base are directly or indirectly connected, and after being folded, the upper hinge base and the lower hinge base are separated from each other, so as to ensure excellent structural stability after the folding chair is unfolded. On this premise, the structure can be further simplified and the cost can be reduced.

[0023] To more clearly illustrate the technical solution of the present invention, the attached drawings that need to be used in the description of the embodiments are briefly introduced below. However, the drawings described below are only a part of the embodiments of the present invention, and it is obvious that those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

Brief Description of the Drawings

[0024]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0025] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings, so that those skilled in the art can more easily understand the advantages and features of the present invention. It should be noted that the description of these embodiments is used to understand the present invention, but does not limit the present invention. Also, regarding the technical features related to each embodiment of the present invention described below, if they do not conflict with each other, they can be combined with each other.

[0026] (Embodiment 1) Referring to FIGS. 1 to 5, this embodiment provides a folding chair for outdoor use, which has a deployed state shown in FIG. 1 and a folded state shown in FIG. 5. The folding chair includes an upper hinge base 11, a plurality of support legs 12, a lower hinge base 13, and a plurality of upper support rods 14. The folding chair further includes a supporting cloth cover, and the supporting cloth cover is connected to the plurality of upper support rods 14 to form a seat portion for supporting the buttocks and a backrest portion for further supporting the back. When the folding chair is in the deployed state, the cloth cover is spread on the plurality of upper support rods 14 to support the human body.

[0027] Furthermore, the upper hinge base 11 includes a plurality of upper hinge portions 111 extending outward in the radial direction, and the plurality of upper hinge portions 111 are arranged at intervals along the circumferential direction of the upper hinge base 11. Each support leg 12 has an upper end portion 121 rotatably connected to the upper hinge base 11 and a lower end portion for supporting on the ground, respectively. Specifically, the upper hinge portion 111 is a hinge groove, and the hinge groove has a lower side and an outer side arranged in an open manner, so that it is hinge-connected to the support leg 12. Among them, the upper end portion 121 of the support leg 12 is inserted into the hinge groove and hinge-connected to each other. Here, the term "outer side" as an orientation term is defined with reference to the geometric center of the upper hinge base 11, and the side far from the geometric center of the upper hinge base 11 is taken as the outer side.

[0028] The lower hinge base 13 is located below the upper hinge base 11, and the upper hinge base 11 and the lower hinge base 13 are directly or indirectly connected. In this embodiment, the upper hinge base 11 and the lower hinge base 13 are indirectly connected through the following connecting rod 16. The lower end portion of each upper support rod 14 is rotatably connected to the lower hinge base 13. Specifically, the lower hinge base 13 is a hinge groove, and the hinge base has an upper side and an outer side arranged in an open manner, so that it is hinge-connected to the upper support rod 14. Among them, the lower end portion of the upper support rod 12 is inserted into the hinge groove and hinge-connected to each other. Here, the term "outer side" as an orientation term is defined with reference to the geometric center of the lower hinge base 13, and the side far from the geometric center of the lower hinge base 13 is taken as the outer side.

[0029] The middle part of each support leg 12 is further connected to a corresponding upper support rod 14 so as to rotate, and the plurality of support legs 12 and the plurality of upper support rods 14 are provided in a staggered pattern. Specifically, the upper support rod 14 is provided with a connection sleeve 143, and the connection sleeve 143 is connected to the support leg 12 so as to rotate.

[0030] Furthermore, referring to FIGS. 1 and 2, the lower hinge base 13 includes 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 second lower hinge portion 132 is provided between two adjacent support legs 12, and in a plan view, the first lower hinge portion 131 or the second lower hinge portion 132 is located between two adjacent upper hinge portions 111.

[0031] The plurality of upper support rods 14 are composed of two front support rods 141 and two backrest rods 142. The lower end of each front support rod 141 is connected to the first lower hinge portion 131 so as to rotate, and the lower end of each backrest rod 142 is connected to the second lower hinge portion 132 so as to rotate. Thereby, the inclination degree of the front support rod 141 is smaller than that of the backrest rod 142, which is more in line with ergonomics and makes it more comfortable when using the folding chair.

[0032] In addition, an upper storage groove is formed between any two adjacent upper hinge portions 111. After the folding chair is in a folded state, the upper support rod 14 is close to the upper hinge base 11 and is accommodated in the upper storage groove. Similarly, lower storage grooves are respectively 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. After the folding chair is in a folded state, the support legs 12 are close to the upper hinge base 11 and are accommodated in the lower storage grooves. Also, the above-mentioned "connected so as to rotate" specifically refers to a pivot connection.

[0033] Foot pads 17 are provided at the lower ends of the respective support legs 12. The foot pads 17 have a support surface 171. When the folding chair is in the deployed state, the support surfaces 171 of the respective foot pads 17 are located in the same plane.

[0034] Each front support rod 141, backrest rod 142 or support leg 12 is a telescopic rod. Specifically, referring to FIG. 1, the front support rod 141 includes two rod members 15 that are fitted to each other and relatively telescopically movable. The backrest rod 142 includes three rod members 15 that are fitted to each other and relatively telescopically movable. The support leg 12 includes two rod members 15 that are fitted to each other and relatively telescopically movable. Thereby, the height of the folding chair can be adaptively adjusted, and after being folded and stored, the volume becomes smaller.

[0035] As shown in FIGS. 3 and 4, a connecting rod 16 is provided on one of the upper hinge base 11 and the lower hinge base 13, and the other is removably connected to the connecting rod 16. Specifically, in this embodiment, the connecting rod 16 is provided on the upper hinge base 11, and the lower hinge base 13 is removably connected to the connecting rod 16. An insertion groove 133 into which the connecting rod 16 is inserted is provided on the upper hinge base 11 or the lower hinge base 13. Specifically, in this embodiment, the insertion groove 133 is provided on the lower hinge base 13, and the lower end of the connecting rod 16 is removably inserted into the insertion groove 133.

[0036] When the folding chair is in the deployed state, the lower ends of the plurality of support legs 12 are relatively deployed, the upper ends of the plurality of upper support rods 14 are relatively deployed, and the connecting rod 16 is connected between the upper hinge base 11 and the lower hinge base 13. Specifically, the lower end of the connecting rod 16 is inserted into the insertion groove 133 of the lower hinge base 13. When the folding chair is in the folded state, the lower ends of the plurality of support legs 12 are close to each other, the upper ends of the plurality of upper support rods 14 are close to each other, the connecting rod 16 and the lower hinge base 13 are separated from each other, and the upper hinge base 11 and the lower hinge base 13 are separated from each other. Specifically, the lower end of the connecting rod 16 is detached from the insertion groove 133 of the lower hinge base 13.

[0037] In this embodiment, both the number of the support legs 12 and the upper support rods 14 is four. The upper support rods 14 and the support legs 12 are both provided with rod members 15 that are fitted to each other and can be relatively telescoped. The volume of the folding chair after telescoping and folding is small, the package size is reduced. At the center of the folding chair, an upper hinge base 11 and a lower hinge base 13 for connecting the support legs 12 and the upper support rods 14 respectively are provided. The plurality of support legs 12 and the plurality of upper support rods 14 are provided so as to intersect, that is, one upper support rod 14 is accommodated between every two support legs 12, rationally utilizing the space, and the volume after folding is small. A connecting rod 16 is provided on the upper hinge base 11, and the lower hinge base 13 is removably connected to the connecting rod 16. When in the unfolded state, the connecting rod 16 is connected between the upper hinge base 11 and the lower hinge base 13, having excellent structural stability. The first lower hinge portion and the second lower hinge portion are set in a staggered pattern. Since the inclination angle of the backrest rod is small (i.e., close to the vertical plane), the user's back can be well supported. The inclination angle of the front support rod is large (i.e., close to the horizontal plane), and the distance between the front support rod and the backrest rod becomes large, improving the comfortable sense of use.

[0038] The structure of the folding chair of this embodiment is simple and its cost is low. When in the unfolded state, the lower ends of the plurality of support legs 12 are relatively unfolded, the upper ends of the plurality of upper support rods 14 are relatively unfolded, and the connecting rod 16 is connected between the upper hinge base 11 and the lower hinge base 13. When the folding chair is shifted from the unfolded state to the folded state, as the upper hinge base 11 is pulled upward, the support legs 12 and the upper support rods 14 are turned over (as shown in FIG. 4), and the rod members 15 of each support leg 12 and each upper support rod 14 are contracted to the state shown in FIG. 5, and the volume after folding and storage becomes small.

[0039] (Embodiment 2) Referring to FIGS. 6 to 9, the difference between this embodiment and Embodiment 1 is that no rod member is used between the upper hinge base 11 and the lower hinge base 13, and they are directly connected. Other parts are basically the same as those in Embodiment 1. Referring to FIGS. 6 to 9, the middle part of the upper hinge base 11 extends downward, and the middle part of the lower hinge base 13 extends upward. There are no other connecting members between the upper hinge base 11 and the lower hinge base 13 other than the plurality of upper support rods 14 and the plurality of support legs 12. When the folding chair is in the unfolded state shown in FIG. 8, the upper hinge base 11 and the lower hinge base 13 are in contact with each other. More specifically, when the folding chair is in the folded state shown in FIG. 9, the upper hinge base 11 and the lower hinge base 13 are separated from each other.

[0040] The middle part of the upper hinge base 11 is provided with a lower extending segment that extends downward, and an insertion groove is provided in the lower extending segment. The middle part of the lower hinge base 13 is provided with an upper extending segment that extends upward, and an insertion part is formed at the upper end of the upper extending segment. When the folding chair is unfolded, the upper hinge base 11 and the lower hinge base 13 approach each other, and the upper end of the upper extending segment is gradually inserted into the insertion groove of the lower extending segment. When the folding chair is folded, the upper hinge base 11 and the lower hinge base 13 move relatively apart, and the upper end of the upper extending segment gradually disengages from the insertion groove of the lower extending segment. The height of the upper extending segment, the height of the lower extending segment, or the sum of the heights of both is smaller than the length of the upper support rod 14 or the support leg 12 after being retracted.

[0041] As shown in this specification and the claims, the terms "including" and "consisting of" merely indicate including the clearly described steps and elements, and these steps and elements do not form an exclusive list, and the method or device may include other steps or elements. The term "and / or" used in this specification includes any combination of one or more related items.

[0042] Unless otherwise clearly described in this specification, the indefinite articles "a", "one", and "a kind of" before an element or component in this specification are intended to non - restrictively describe the number (i.e., the number of occurrences) of examples of the said element or component. Therefore, "a", "one", and "a kind of" should be understood to include one or at least one, and the singular form of the said element or component also includes the plural form.

[0043] Here, unless otherwise specified, when a certain feature is described as being "fixed" or "connected" to another feature, it may be directly fixed and connected to the other feature, or may be indirectly fixed and connected to the other feature. Also, descriptions such as up, down, left, and right used in the present invention are merely for explaining the mutual positional relationship of each component of the present invention in the drawings.

[0044] Furthermore, as can be understood, terms such as "first" and "second" are used to describe each piece of information, but this information is not limited to these terms. These terms do not indicate a specific order or importance, and are merely used to distinguish information belonging to the same type from each other. In fact, expressions such as "first" and "second" can be completely rewritten. For example, without departing from the scope of the present disclosure, the first information may be called the second information, and similarly, the second information may be called the first information.

[0045] The above - mentioned embodiments are merely used to explain the technical concept and features of the present invention, and are preferred embodiments, with the purpose of enabling those skilled in the art to understand the content of the present invention and implement it based thereon, and do not limit the protection scope of the present invention.

Description of Reference Numerals

[0046] 11 Upper hinge base, 111 Upper hinge part, 12 Support leg, 121 Upper end part, 13 Lower hinge base, 131 First lower hinge part, 132 Second lower hinge part, 133 Insertion groove, 14 Upper support rod, 141 Front support rod, 142 Back - abutting rod, 143 Connection sleeve, 15 Rod member, 16 Connecting rod, 17 Foot pad, 171 Support surface

Claims

1. A folding chair having a deployed state and a folded state, the folding chair comprising an upper hinge base, a plurality of support legs each having an upper end rotatably connected to the upper hinge base and a lower end for supporting on the ground, a lower hinge base located below the upper hinge base, and a plurality of upper support rods having lower ends rotatably connected to the lower hinge base, wherein an intermediate portion of each of the support legs is further connected to a corresponding one of the upper support rods so as to rotate, when the folding chair is in the deployed state, lower ends of the plurality of support legs are relatively deployed, upper ends of the plurality of upper support rods are relatively deployed, the upper hinge base and the lower hinge base are directly or indirectly connected, when the folding chair is in the folded state, the lower ends of the plurality of support legs are close to each other, the upper ends of the plurality of upper support rods are close to each other, and the upper hinge base and the lower hinge base are separated from each other. A folding chair characterized by this.

2. The folding chair according to claim 1, wherein when the folding chair is in the deployed state, the upper hinge base and the lower hinge base are in contact with each other.

3. One of the upper hinge base and the lower hinge base is provided with an insertion groove, and the other is provided with an insertion portion. When the folding chair is in the deployed state, the insertion portion is inserted into the insertion groove. When the folding chair is in the folded state, the insertion portion is disengaged from the insertion groove. The folding chair according to claim 2, characterized by this.

4. The intermediate portion of the upper hinge base is provided with a lower extending segment extending downward, the insertion groove is provided in the lower extending segment, the intermediate portion of the lower hinge base is provided with an upper extending segment extending upward, and the insertion portion is formed at the upper end of the upper extending segment. The folding chair according to claim 3, characterized by this.

5. One of the upper hinge base and the lower hinge base is provided with a connecting rod, and the other is removably connected to the connecting rod. The connecting rod is connected between the upper hinge base and the lower hinge base when the folding chair is in the deployed state, and is separated from the upper hinge base or the lower hinge base when the folding chair is in the folded state. The folding chair according to claim 1, characterized by this.

6. The upper hinge base or the lower hinge base is provided with an insertion groove into which the connecting rod is inserted. When the folding chair is in the unfolded state, one end of the connecting rod is inserted into the insertion groove. When the folding chair is in the folded state, the connecting rod is detached from the insertion groove. The folding chair according to claim 5, characterized in that.

7. The lower hinge base includes a first lower hinge portion and a second lower hinge portion. The first lower hinge portion is 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 connected to the first lower hinge portion so as to be rotatable. The lower end of the backrest rod is connected to the second lower hinge portion so as to be rotatable. The folding chair according to claim 1, characterized in that.

8. The angle between the front support rod and the horizontal plane is smaller than the angle between the backrest rod and the horizontal plane. The folding chair according to claim 7, characterized in that.

9. The plurality of support legs and the plurality of front support rods are provided in a staggered manner. Only one of the first lower hinge portions or the second lower hinge portions is provided between two adjacent support legs. The folding chair according to claim 7, characterized in that.

10. The upper hinge base includes a plurality of upper hinge portions extending outward in the radial direction. The plurality of upper hinge portions are arranged at intervals along the circumferential direction. In plan view, the first lower hinge portion or the second lower hinge portion is located between two adjacent upper hinge portions. The folding chair according to claim 9, characterized in that.

11. The pattern formed by the orthographic projection of the plurality of upper hinge bases on the horizontal plane is axisymmetric. The pattern formed by the orthographic projection of the first lower hinge portion and the second lower hinge portion on the horizontal plane is centrosymmetric and non-axisymmetric. The folding chair according to claim 10, characterized in that.

12. The upper hinge portion is a hinge groove. The hinge groove has a lower side and an outer side that are open. The folding chair according to claim 10, characterized in that.

13. A foot pad is provided at the lower end of each support leg. The foot pad has a support surface. When the folding chair is in the unfolded state, the support surfaces of the foot pads are located in the same plane. The folding chair according to claim 7, characterized in that.

14. The folding chair according to claim 7, wherein the upper support rod is provided with a connection sleeve, and the connection sleeve is connected to the support leg so as to be rotatable.

15. The folding chair according to claim 7, wherein the front support rod, the backrest rod or the support leg is a telescopic rod.

16. The folding chair according to claim 7, wherein the first lower hinge portion and / or the second lower hinge portion is a hinge groove, and the hinge groove has an upper side and an outer side which are arranged in an open manner.

Images