Patent Application
20250143465
The present application relates to the field of furniture, and particularly to a height-adjustable folding chair.
A folding chair is an indispensable kind of furniture in modern life. Currently, there are many kinds of folding chairs in the market, and different products may be selected according to the height and preference of a user, a use environment, a use season, etc. In order to improve the applicability of the folding chair, and enable the folding chair to satisfy different heights of users to achieve multiple (at least two) functions, a folding chair with a height adjustable function comes into being. Such folding chair is provided with a special height adjustment structure. Although the structure of such folding chair is not complex, the cost thereof is increased due to the addition of a height adjustment mechanism. Thus, there is an urgent need for a folding chair that is simpler in structure, and has its height adjustable without a special height adjustment structure, resulting in reduced production costs.
To this end, the present application provides a height-adjustable folding chair, for solving the technical problems of relatively complex structure and relatively high cost of the existing height-adjustable folding chair due to the provision of a special height adjustment mechanism.
In order to achieve the described object, the present application provides the following technical solution:
A height-adjustable folding chair comprises a first support, a second support, and a seat plate, wherein a middle section of the first support is connected to a middle section of the second support through a hinge shaft, a lower section of the first support and a lower section of the second support each have a bending angle, and two ends of the seat plate are pivotally secured with a first support upper cross rod and a second support upper cross rod respectively. The seat plate has a side A and a side B facing away from the side A. When the first support and the second support are unfolded in an X shape, a bent section of the first support and a bent section of the second support are bent facing each other, in which case the side B of the seat plate faces upwards; or the bent section of the first support and the bent section of the second support are bent facing away from each other, in which case the side A of the seat plate faces upwards.
Optionally, the seat plate is a soft-body seat plate comprising two tubes and a soft connecting body, wherein the two tubes are pivotally secured with the first support upper cross rod and the second support upper cross rod respectively, and two ends of the soft connecting body are connected to the two tubes respectively.
Optionally, the seat plate is a hinge seat plate comprising a front plate and a rear plate, wherein a front end of the front plate is pivotally secured with the first support upper cross rod, a rear end of the rear plate is pivotally secured to the second support upper cross rod, a rear end of the front plate and a front end of the rear plate have square wave shapes engaging each other, and engaging portions are connected to each other through a transverse hinge shaft.
Optionally, the seat plate is a sliding seat plate which is a rigid plate. The sliding seat plate is provided with a slotted hole at a front side portion for pivotal secure with the first support upper cross rod, allowing the first support upper cross rod to slide within the sliding seat plate, and the sliding seat plate is provided with a round hole at a rear side portion for pivotal secure with the second support upper cross rod.
Optionally, the first support comprises two parallel first support connecting rods and the first support upper cross rod, wherein the first support connecting rods each comprise a first support first connecting rod and a first support second connecting rod, two ends of the first support upper cross rod are connected to upper ends of the two first support first connecting rods respectively, a lower section of the first support first connecting rod is movably inserted into an upper end of the first support second connecting rod, a pin hole is provided at a side portion of a lower end of the first support first connecting rod, two pin holes are provided at a side portion of an insertion-receiving section of the first support second connecting rod, and relative positions of the first support first connecting rod and the first support second connecting rod are secured by inserting a pin into the corresponding pin holes.
Optionally, the second support comprises two parallel second support connecting rods and the second support upper cross rod, wherein the second support connecting rods each comprise a second support first connecting rod and a second support second connecting rod, two ends of the second support upper cross rod are connected to upper ends of the two second support first connecting rods respectively, a lower section of the second support first connecting rod is movably inserted into an upper end of the second support second connecting rod, a slotted hole is provided at a side portion of an inserted section of the second support first connecting rod, a pin hole is provided at a side portion of an upper end of the second support second connecting rod, and a pin passing through the slotted hole is provided in the pin hole.
Optionally, the second support comprises two second support connecting rods, two fixing sleeves, and one second support upper cross rod, wherein the two second support connecting rods are disposed in parallel, the two fixing sleeves are fixed to two ends of the second support upper cross rod respectively, the two fixing sleeves are slidably sleeved on upper ends of the two second support connecting rods respectively, and a fixing point is provided at the upper end of each of the second support connecting rods to prevent the corresponding fixing sleeve from slipping, thereby ensuring the lowest position of the corresponding fixing sleeve.
Optionally, the height-adjustable folding chair further comprises a backrest support and a backrest fixing plate, wherein a lower end of the backrest support is pivotally secured with an upper section of the second support, a snap point is provided above a portion of the second support hinged to the backrest support, one end of the backrest fixing plate is pivotally secured to a lower section of the backrest support, and a snap opening fitting with the snap point is provided at the other end of the backrest fixing plate.
Optionally, the height-adjustable folding chair further comprises an armrest support and a backrest support, wherein a lower end of the armrest support is pivotally secured with an upper end of the first support, an upper end of the backrest support is pivotally secured to an upper end of the armrest support, a snap point is provided at an upper end of the second support, and a snap opening fitting with the snap point is provided at a lower end of the backrest support.
The present application has the following advantages:
When the two supports are unfolded in an X shape, the seat plate is also unfolded and prevents the two supports from being excessively unfolded, the seat plate serves as a seat to bear pressure from the hip, and the two supports serve as chair legs to support the seat. Since the lower sections of the two supports each have a bending angle, if the bent sections of the two supports in the unfolded state are bent facing away from each other, the chair legs formed by the supports are lower, and accordingly, the seat plate is at a lower position, forming a low-position folding chair (in this case, the side A of the seat plate faces upwards); and if the bent sections of the two supports in the unfolded state are bent facing each other, the chair legs formed by the supports are higher, and accordingly, the seat plate is at a higher position, forming a high-position folding chair (in this case, the side B of the seat plate faces upwards). Compared with the existing height-adjustable folding chair, the height-adjustable folding chair achieves height adjustment and switch between the side A and the side B of the seat plate just by arranging the supports at a bending angle, omitting a special adjustment structure, resulting in a simpler structure and reduced production costs.
In order to illustrate the implementations of the present application or technical solutions in the prior art more clearly, the drawings required for describing the implementations or the prior art will be briefly introduced below. Apparently, the drawings described below are merely exemplary, and those of ordinary skill in the art may further derive other implementing drawings from the provided drawings without creative effort.
The structure, proportion, size, etc. illustrated in the description are used only for cooperating with the content disclosed in the description to facilitate understanding and reading by those skilled in the art, rather than limiting implementable specific conditions of the present application, and therefore do not have technically substantive meanings. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effect and purpose achievable by the present application, shall fall within the scope encompassed by the technical content disclosed in the present application.
In the drawings:
The implementations of the present application are described below using specific embodiments, and those skilled in the art may readily understand other advantages and effects of the present application based on the content disclosed in the description. Apparently, the described embodiments are some rather than all of the embodiments of the present application. All the other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative effort fall within the scope of protection of the present application.
The terms such as “upper”, “lower”, “left”, “right”, and “middle”, etc. set forth in the description are merely for the convenience of clear description, and are not intended to limit the implementable scope of the present application. The change or adjustment of their relative relationship shall also fall within the implementable scope of the present application in the absence of substantial changes of the technical content.
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In this embodiment, the seat plate 3 has a front side and a back side, which are a side A and a side B, respectively. When the two supports are unfolded in an X shape, the seat plate 3 is also unfolded and prevents the two supports from being excessively unfolded, the seat plate 3 serves as a seat to bear pressure from the hip, and the two supports serve as chair legs to support the seat. Since the lower sections of the two supports each have a bending angle, if the bent sections of the two supports in the unfolded state are bent facing away from each other, the chair legs formed by the supports are lower, and accordingly, the seat plate 3 is at a lower position, forming a low-position folding chair, in which case the side A of the seat plate 3 faces upwards; and if the bent sections of the two supports in the unfolded state are bent facing each other, the chair legs formed by the supports are higher, and accordingly, the seat plate 3 is at a higher position, forming a high-position folding chair, in which case the side B of the seat plate 3 faces upwards. Compared with existing height-adjustable folding chair, the height-adjustable folding chair achieves height adjustment and switch between the side A and the side B of the seat plate 3 just by arranging the supports at a bending angle, omitting a special adjustment structure, resulting in a simpler structure and reduced production costs.
This embodiment is a further improvement based on embodiment 1. As shown in
By pulling out the pin 9 and inserting the first support first connecting rod 121 into the first support second connecting rod 122 for a further distance, the height of the first support connecting rod 12 is reduced, so that the first support upper cross rod 11 can pass underneath the second support upper cross rod 21, to exchange positions of the two supports, thereby adjusting the heights of the supports and the seat plate 3, and completing the height adjustment of the folding chair. After the exchange, the position of the first support first connecting rod 121 is restored, and the pin 9 is inserted into the pin holes.
This embodiment is a further improvement based on embodiment 1. As shown in
By pulling the second support first connecting rod 221 upwards, the second support upper cross rod 21 can cross over the first support upper cross rod 11, to exchange positions of the two supports, thereby adjusting the heights of the supports and the seat plate 3, and completing the height adjustment of the folding chair.
This embodiment is a further improvement based on embodiment 1. As shown in
Through the described design, the second support upper cross rod 21 may be lifted to a height to cause the second support upper cross rod 21 to be higher than the first support upper cross rod 11, ensuring that the first support upper cross rod 11 can pass underneath the second support upper cross rod 21, to exchange positions of the two supports, thereby adjusting the heights of the supports and the seat plate 3, and completing the height adjustment of the folding chair.
This embodiment is a further improvement based on embodiment 1. As shown in
The foldable backrest support 4 may be added to the folding chair of Embodiment 1 as a backrest of the chair, to improve comfortableness for a user.
This embodiment is a further improvement based on embodiment 1. As shown in
The foldable backrest support 4 may be added to the folding chair of Embodiment 1 as a backrest of the chair and the foldable armrest support 6 may be added as armrests, to improve comfortableness for a user.
In the described embodiments, the illustration is provided in a situation where the first support is smaller than the second support, and on the basis of the inventive concept of the present application, those skilled in the art may design the first support to be larger than the second support, which still falls into the scope of protection of the present application.
Although the present application has been described in details hereinabove using general description and specific embodiments, some modifications or improvements can be made based on the present application, which is apparent to those skilled in the art. Therefore, such modifications or improvements made without departing from the spirit of the present application fall within the scope of protection of the present application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202211373752.3 | Nov 2022 | CN | national |
This application is a continuation of International Patent Application No. PCT/CN2023/126979 with a filing date of Oct. 27, 2023, designating the United States, now pending, and further claims priority to Chinese Patent Application No. 202211373752.3 with a filing date of Nov. 3, 2022. The content of the aforementioned applications, including any intervening amendments thereto, is incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2023/126979 | Oct 2023 | WO |
| Child | 19017225 | US |
