High-low folding chair

Abstract

The application discloses a high-low folding chair, which comprises a first support, a second support and a cushion piece, the middle section of the first support is connected with the middle section of the second support through a hinge shaft, the lower section of the first support and the lower section of the second support are both provided with a certain bending angle, the two ends of the cushion piece are respectively connected with the upper horizontal rod of the first support and the upper horizontal rod of the second support, the cushion piece has an A surface and a B surface, and the bending section of the first support and the bending section of the second support are oppositely bent (at this time, the B surface of the cushion piece faces upwards) or reversely bent (at this time, the A surface of the cushion piece faces upwards) after the first support and the second support are unfolded in an X shape. Compared with the existing height-adjustable folding chair, the high-low adjustment and the different selection of the A surface and the B surface of the cushion piece are realized only by setting the supports with certain bending angles, the special adjusting structure is omitted, the structure is simpler, and the production cost is lower.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of furniture, in particular to a high-low folding chair. BACKGROUND

[0002] Folding chairs are indispensable furniture in modern life. There are various types of folding chairs on the market, and different products can be selected according to the height and preference of the user, the use environment, the use season, etc. In order to improve the applicability and make the folding chair meet the needs of users of different heights and realize one chair with multiple functions (at least two functions), a folding chair with height adjustment function appears. This type of folding chair is provided with a special height adjustment structure, although the structure is not complex, but the height adjustment mechanism is added, which leads to an increase in the cost of this type of folding chair. Therefore, there is an urgent need for a folding chair with a simpler structure that can adjust the height without setting a special height adjustment structure, thereby reducing production costs. SUMMARY

[0003] Therefore, the present application provides a high-low folding chair to solve the technical problem of relatively complex structure and relatively high cost of the existing height-adjustable folding chair due to the setting of a special height adjustment mechanism.

[0004] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] A high-low folding chair, comprising a first support, a second support and a cushion piece, the middle section of the first support is connected with the middle section of the second support through a hinge shaft, the lower section of the first support and the lower section of the second support are both provided with a certain bending angle, and the two ends of the cushion piece are respectively connected with the upper horizontal rod of the first support and the upper horizontal rod of the second support through a shaft connection; the cushion piece has an A surface and a B surface opposite to the A surface; when the first support and the second support are unfolded in an X shape, the bent sections of the first support and the second support are bent in opposite directions, at this time the B surface of the cushion piece faces upward; or the bent sections of the first support and the second support are bent in opposite directions, at this time the A surface of the cushion piece faces upward.

[0006] Optionally, the cushion piece is a soft cushion piece, which comprises two cylinder bodies and a soft connecting body, the two cylinder bodies are respectively connected with the upper horizontal rod of the first support and the upper horizontal rod of the second support through a shaft connection, and the two ends of the soft connecting body are respectively connected with the two cylinder bodies.

[0007] Optionally, the cushion piece is a hinge cushion piece, which comprises a front cushion piece and a rear cushion piece, the front end of the front cushion piece is connected with the upper horizontal rod of the first support through a shaft connection, the rear end of the rear cushion piece is connected with the upper horizontal rod of the second support through a shaft connection, the rear end of the front cushion piece and the front end of the rear cushion piece are in the form of intermeshing Great Wall teeth, and the intermeshing part is connected through a horizontal hinge shaft.

[0008] Optionally, the seat cushion is a sliding seat cushion, the sliding seat cushion is a hard board, a strip-shaped hole is arranged on the front side of the sliding seat cushion to slide with and be fixed with the upper horizontal rod of the first support, and a round hole is arranged on the rear end of the sliding seat cushion to be fixed with the upper horizontal rod of the second support.

[0009] Optionally, the first support comprises two parallel first support connecting rods and the upper horizontal rod of the first support, the first support connecting rods comprise a first support first connecting rod and a first support second connecting rod, the two ends of the upper horizontal rod of the first support are connected with the upper ends of the two first support first connecting rods respectively, the lower section of the first support first connecting rod is movably inserted into the upper end of the first support second connecting rod, the side of the lower end of the first support first connecting rod is provided with a pin hole, the side of the inserted section of the first support second connecting rod is provided with two pin holes, and a pin shaft is inserted into the corresponding pin holes to fix the relative positions of the first support first connecting rod and the first support second connecting rod.

[0010] Optionally, the second support comprises two parallel second support connecting rods and the upper horizontal rod of the second support, the second support connecting rods comprise a second support first connecting rod and a second support second connecting rod, the two ends of the upper horizontal rod of the second support are connected with the upper ends of the two second support first connecting rods respectively, the lower section of the second support first connecting rod is movably inserted into the upper end of the second support second connecting rod, the side of the inserted section of the second support first connecting rod is provided with a strip-shaped hole, the side of the upper end of the second support second connecting rod is provided with a pin hole, and a pin shaft is arranged in the pin hole and passes through the strip-shaped hole.

[0011] Optionally, the second support comprises two second support connecting rods, two fixing sleeves and the upper horizontal rod of the second support, the two second support connecting rods are arranged in parallel, the two fixing sleeves are fixed at the two ends of the upper horizontal rod of the second support respectively, and the two fixing sleeves are slidably sleeved on the upper ends of the two second support connecting rods, and a fixing point for preventing the fixing sleeves from sliding downward to ensure the lowest position of the fixing sleeves is arranged on the upper end of the second support connecting rod.

[0012] Optionally, the high-low folding chair further comprises a backrest support and a backrest fixing piece, the lower end of the backrest support is fixed with the upper section of the second support in a pivoted manner, a buckle point is arranged above the pivoted position of the backrest support on the second support, one end of the backrest fixing piece is fixed with the lower section of the backrest support in a pivoted manner, and the other end of the backrest fixing piece is provided with a buckle hole matched with the buckle point.

[0013] Optionally, the high-low folding chair further comprises an armrest support and a backrest support, the lower end of the armrest support is fixedly connected with the upper end of the first support in an axis manner, the upper end of the backrest support is fixedly connected with the upper end of the armrest support in an axis manner, the upper end of the second support is provided with a buckle point, and the lower end of the backrest support is provided with a buckle hole matched with the buckle point.

[0014] The present application has the following advantages:

[0015] When the two supports are unfolded in an X shape, the cushion piece is also unfolded and prevents the two supports from being unfolded excessively, the cushion piece bears the pressure of the hips as a seat, and the two supports support the seat as legs; because the lower sections of the two supports are provided with a certain bending angle, if the bending sections of the two supports are in a back-to-back bending state when unfolded, the chair legs formed by the supports are lower, and thus the height of the cushion piece is lower, forming a low folding chair (at this time, the A surface of the cushion piece faces upward); if the bending sections of the two supports are in a face-to-face bending state when unfolded, the chair legs formed by the supports are higher, and thus the height of the cushion piece is higher, forming a high folding chair (the B surface of the cushion piece faces upward). Compared with the existing height-adjustable folding chair, the height adjustment is realized only by setting the bending angle of the supports, the A surface and the B surface of the cushion piece are switched, a special adjusting structure is saved, the structure is simpler, and the production cost is lower. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0017] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not define the limiting conditions for the implementation of the present application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0018] Figure 1 Structure schematic view of the high-low folding chair provided for example 1 in a low position;

[0019] Figure 2 Structure schematic view of the high-low folding chair provided for example 1 in a high position;

[0020] Figure 3 Structure schematic view of the high-low folding chair provided for example 1 when folded;

[0021] Figure 4 Elevation view of the high-low folding chair of Example 1 in the low position with soft seat cushion pieces;

[0022] Figure 5 Elevation view of the high-low folding chair of Example 1 in the low position with hinged seat cushion pieces;

[0023] Figure 6 Elevation view of the high-low folding chair of Example 1 in the low position with hinged seat cushion pieces;

[0024] Figure 7 Elevation view of the high-low folding chair of Example 1 in the low position with sliding seat cushion pieces;

[0025] Figure 8 Elevation view of the high-low folding chair of Example 1 in the low position with sliding seat cushion pieces;

[0026] Figure 9 Elevation view of the high-low folding chair of Example 2 in the low position;

[0027] Figure 10 Elevation view of the high-low folding chair of Example 2 in the low position;

[0028] Figure 11 Elevation view of the high-low folding chair of Example 3 in the low position;

[0029] Figure 12 Elevation view of the high-low folding chair of Example 3 in the low position;

[0030] Figure 13 Elevation view of the high-low folding chair of Example 4 in the low position;

[0031] Figure 14 Elevation view of the high-low folding chair of Example 4 in the low position;

[0032] Figure 15 Elevation view of the high-low folding chair of Example 5 with backrest in the low position;

[0033] Figure 16 Elevation view of the high-low folding chair of Example 5 with backrest in the high position;

[0034] Figure 17 Elevation view of the high-low folding chair of Example 5 with backrest in the low position;

[0035] Figure 18 Elevation view of the high-low folding chair of Example 6 with backrest and armrests in the low position;

[0036] Figure 19 Fig. 6 is a schematic view of the structure of the high-low folding chair with a backrest and armrests in the high position according to Example 6;

[0037] Figure 20 Fig. 7 is an exploded view of the high-low folding chair with a backrest and armrests in the low position according to Example 6.

[0038] In the figures:

[0039] 1 - first support, 11 - upper horizontal bar of first support, 12 - connecting rod of first support, 121 - first connecting rod of first support, 122 - second connecting rod of first support;

[0040] 2 - second support, 21 - upper horizontal bar of second support, 22 - connecting rod of second support, 221 - first connecting rod of second support, 222 - second connecting rod of second support, 23 - fixing sleeve, 24 - fixing point, 25 - clamping point;

[0041] 3 - cushion piece, 31 - soft cushion piece, 311 - cylinder, 312 - soft connecting body, 32 - hinged cushion piece, 321 - front cushion piece, 322 - rear cushion piece, 33 - sliding cushion piece, 34 - A surface, 35 - B surface;

[0042] 4 - backrest support, 5 - backrest fixing piece, 6 - armrest support, 7 - slot, 8 - pin hole, 9 - pin, 10 - bayonet. DETAILED DESCRIPTION

[0043] The embodiments of the present application will be described herein below with reference to specific embodiments. Those skilled in the art will readily understand other advantages and functions of the present application after reading the description of the embodiments. It is apparent that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of the present application.

[0044] The terms such as "upper", "lower", "left", "right", "middle" and the like used in the specification are only for the convenience of clear description, and are not intended to limit the scope of the present application. Changes or adjustments of the relative relationship without substantial changes in the technical content are also considered as the scope of the present application.

[0045] Example 1

[0046] As Figures 1 to 4As shown in the figure, the embodiment 1 provides a high-low folding chair, which comprises a first support 1, a second support 2 and a cushion piece 3. The first support 1 and the second support 2 are similar to rectangles, the first support 1 is slightly smaller and is sleeved in the second support 2, and the middle sections of the two supports are connected through a hinge shaft. The reason why they are similar to rectangles is that the lower sections of the first support 1 and the second support 2 are both provided with a certain bending angle, for example, the bending angle of the first support 1 is 29° and the bending angle of the second support 2 is 35°. The two ends of the cushion piece 3 are respectively axially fixed with the upper horizontal rod 11 of the first support and the upper horizontal rod 21 of the second support. When the first support 1 and the second support 2 are unfolded in an X shape, the bent sections of the first support 1 and the second support 2 are bent towards each other (also referred to as inward bending) or away from each other (also referred to as outward bending).

[0047] As shown in the figure, Figure 4 In an optional scheme of the embodiment, the cushion piece 3 is a soft cushion piece 31, which comprises two cylinder bodies 311 and a soft connecting body 312. The two cylinder bodies 311 are respectively axially fixed with the upper horizontal rod 11 of the first support and the upper horizontal rod 21 of the second support, and the two ends of the soft connecting body 312 are respectively connected with the two cylinder bodies 311. The soft connecting body 312 can be cloth or rope net.

[0048] As shown in the figure, Figure 5 and 6 In another optional scheme of the embodiment, the cushion piece 3 is a hinged cushion piece 32, which comprises a front cushion piece 321 and a rear cushion piece 322. The front end of the front cushion piece 321 is axially fixed with the upper horizontal rod 11 of the first support, the rear end of the rear cushion piece 322 is axially fixed with the upper horizontal rod 21 of the second support, and the rear end of the front cushion piece 321 and the front end of the rear cushion piece 322 are in the form of intermeshing Great Wall teeth and are connected through a transverse hinge shaft at the meshing position.

[0049] As shown in the figure, Figure 7 and 8 In still another optional scheme of the embodiment, the cushion piece 3 is a sliding cushion piece 33, which is a hard plate. The front side of the sliding cushion piece 33 is provided with a strip-shaped hole 7 for sliding and axial fixation with the upper horizontal rod 11 of the first support, and the rear end of the sliding cushion piece 33 is provided with a circular hole (not marked in the figure) for axial fixation with the upper horizontal rod 21 of the second support.

[0050] In the embodiment, the cushion piece 3 has two opposite surfaces, i.e. surface A and surface B. When the two supports are unfolded in X shape, the cushion piece 3 is also unfolded and the two supports are not unfolded too much. The cushion piece 3 bears the pressure of the hips as a seat, and the two supports support the seat as legs. Since the lower segments of the two supports are provided with a certain bending angle, if the bending segments of the two supports are in the opposite bending state when unfolded, the chair legs formed by the supports are lower, and thus the height of the cushion piece 3 is lower, forming a low folding chair. In this state, the surface A of the cushion piece 3 faces upward. If the bending segments of the two supports are in the same bending state when unfolded, the chair legs formed by the supports are higher, and thus the height of the cushion piece 3 is higher, forming a high folding chair. In this state, the surface B of the cushion piece 3 faces upward. Compared with the existing height-adjustable folding chair, the height adjustment is realized only by providing the supports with a certain bending angle, and the surface A and surface B of the cushion piece 3 are also switched, and a special adjusting structure is saved, so that the structure is simpler and the production cost is lower.

[0051] Embodiment 2

[0052] The embodiment is a further improvement based on the embodiment 1. As shown in Figure 9 and 10 In the embodiment, the first support 1 includes two parallel first support connecting rods 12 and a first support upper cross rod 11. The first support connecting rod 12 includes a first support first connecting rod 121 and a first support second connecting rod 122. The two ends of the first support upper cross rod 11 are connected with the upper ends of the two first support first connecting rods 121 respectively. The lower segment of the first support first connecting rod 121 is movably inserted into the upper end of the first support second connecting rod 122. The lower end side of the first support first connecting rod 121 is provided with a pin hole 8, and the inserted segment side of the first support second connecting rod 122 is provided with a pin hole 8. A pin shaft 9 is inserted into the pin hole 8 to fix the relative positions of the first support first connecting rod 121 and the first support second connecting rod 122.

[0053] By adopting the above design, the pin shaft 9 is pulled out, the first support first connecting rod 121 is inserted into the first support second connecting rod 122 by a distance, so that the height of the first support connecting rod 12 is reduced, the first support upper cross rod 11 can pass below the second support upper cross rod 21, the positions of the two supports are exchanged, the height of the support and the height of the cushion piece 3 are adjusted, and the high-low conversion adjustment of the folding chair is completed. After the exchange, the position of the first support first connecting rod 121 is restored, and the pin shaft 9 is inserted.

[0054] Embodiment 3

[0055] The embodiment is a further improvement based on the embodiment 1. As shown in Figure 11 and 12As shown in the embodiment, the second support 2 comprises two parallel second support connecting rods 22 and a second support upper crossbar 21, the second support connecting rods 22 comprise a second support first connecting rod 221 and a second support second connecting rod 222, the two ends of the second support upper crossbar 21 are connected with the upper ends of the two second support first connecting rods 221 respectively, the lower section of the second support first connecting rod 221 is movably inserted into the upper end of the second support second connecting rod 222, the side of the inserted section of the second support first connecting rod 221 is provided with a strip-shaped hole 7, the side of the upper end of the second support second connecting rod 222 is provided with a pin hole 8, and a pin shaft 9 passing through the strip-shaped hole 7 is arranged in the pin hole 8.

[0056] By adopting the above design, the second support first connecting rod 221 can be pulled up, so that the second support upper crossbar 21 can pass over the first support upper crossbar 11 from above, the positions of the two supports are exchanged, the height of the support and the height of the cushion piece 3 are adjusted, and the height conversion adjustment of the folding chair is completed.

[0057] Embodiment 4

[0058] The embodiment is a further improvement based on the embodiment 1. As shown in the embodiment, Figure 13 and 14 As shown in the embodiment, the second support 2 comprises two second support connecting rods 22, two fixing sleeves 23 and a second support upper crossbar 21, the two second support connecting rods 22 are arranged in parallel, the two fixing sleeves 23 are fixed at the two ends of the second support upper crossbar 21 respectively, and the two fixing sleeves 23 are slidably sleeved on the upper ends of the two second support connecting rods 22, and the fixing points 24 for preventing the fixing sleeves 23 from sliding downward to ensure the lowest position of the fixing sleeves 23 are arranged at the upper ends of the second support connecting rods 22.

[0059] By adopting the above design, the second support upper crossbar 21 can be lifted to a certain height, so that the second support upper crossbar 21 is higher than the first support upper crossbar 11, the first support upper crossbar 11 can pass through below the second support upper crossbar 21, the positions of the two supports are exchanged, the height of the support and the height of the cushion piece 3 are adjusted, and the height conversion adjustment of the folding chair is completed.

[0060] Embodiment 5

[0061] The embodiment is a further improvement based on the embodiment 1. As shown in the embodiment, Figures 15 to 17 As shown in the embodiment, the folding chair with adjustable height and adjustable backrest further comprises a backrest support 4 and a backrest fixing piece 5, the lower end of the backrest support 4 is hingedly fixed with the upper section of the second support 2, the buckle points 25 are arranged above the hinge connection between the backrest support 4 and the second support 2, one end of the backrest fixing piece 5 is hingedly fixed with the lower section of the backrest support 4, and the other end of the backrest fixing piece 5 is provided with the buckle hole 10 used in cooperation with the buckle points 25.

[0062] Through the above design, the foldable backrest support 4 can be added to the folding chair of embodiment 1 as a chair back, so that the user is more comfortable.

[0063] Embodiment 6

[0064] This embodiment is a further improvement based on embodiment 1. As shown in the figure, in this embodiment, the height-adjustable folding chair further comprises an armrest support 6 and a backrest support 4, the lower end of the armrest support 6 is fixedly connected with the upper end of the first support 1 by a shaft, the upper end of the backrest support 4 is fixedly connected with the upper end of the armrest support 6 by a shaft, the upper end of the second support 2 is provided with a buckle point 25, and the lower end of the backrest support 4 is provided with a buckle opening 10 for cooperating with the buckle point 25. Figures 18 to 20

[0065] Through the above design, the foldable backrest support 4 can be added to the folding chair of embodiment 1 as a chair back, so that the user is more comfortable.

[0066] In the above embodiments, the first support is smaller than the second support, and those skilled in the art can design the second support to be larger than the first support, which is also based on the inventive concept of the present application and still falls within the protection scope of the present application.

[0067] Although the present application has been described in detail with general description and specific embodiments above, some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the present application all fall within the scope of the present application.​

Claims

1. A high-low folding chair, characterized in that, The device includes a first support, a second support, and a seat cushion. The middle sections of the first and second supports are connected by a hinge shaft. The lower sections of both the first and second supports have a certain bending angle. The two ends of the seat cushion are respectively fixed to the upper crossbars of the first and second supports. The seat cushion has an A-side and a B-side opposite to the A-side. When the first and second supports are unfolded in an X-shape, the bent sections of the first and second supports bend towards each other, at which point the B-side of the seat cushion faces upward; or the bent sections of the first and second supports bend away from each other, at which point the A-side of the seat cushion faces upward.

2. The high-low folding chair according to claim 1, characterized in that, The seat cushion is a soft seat cushion, which includes two cylindrical bodies and a flexible connector. The two cylindrical bodies are respectively fixed to the crossbar of the first support and the crossbar of the second support. The two ends of the flexible connector are respectively connected to the two cylindrical bodies.

3. The high-low folding chair according to claim 1, characterized in that, The seat cushion is a hinged seat cushion, which includes a front cushion and a rear cushion. The front end of the front cushion is fixedly connected to the crossbar on the first bracket, and the rear end of the rear cushion is fixedly connected to the crossbar on the second bracket. The rear end of the front cushion and the front end of the rear cushion are in a toothed shape that meshes with each other, and the meshing part is connected by a transverse hinge shaft.

4. The high-low folding chair according to claim 1, characterized in that, The seat cushion is a sliding seat cushion, which is a rigid board. The front side of the sliding seat cushion is provided with a strip-shaped hole to slide and be fixed with the crossbar on the first bracket. The rear end of the sliding seat cushion is provided with a round hole to be fixed with the crossbar on the second bracket.

5. The high-low folding chair according to claim 1, characterized in that, The first bracket includes two parallel first bracket connecting rods and a first bracket upper crossbar. The first bracket connecting rod includes a first bracket first connecting rod and a first bracket second connecting rod. The two ends of the first bracket upper crossbar are respectively connected to the upper ends of the two first bracket first connecting rods. The lower section of the first bracket first connecting rod is movably inserted into the upper end of the first bracket second connecting rod. A pin hole is provided on the lower end side of the first bracket first connecting rod, and two pin holes are provided on the inserted section side of the first bracket second connecting rod. The relative positions of the first bracket first connecting rod and the first bracket second connecting rod are fixed by inserting pins into the corresponding pin holes.

6. The high-low folding chair according to claim 1, characterized in that, The second bracket includes two parallel second bracket connecting rods and a second bracket upper crossbar. The second bracket connecting rod includes a second bracket first connecting rod and a second bracket second connecting rod. The two ends of the second bracket upper crossbar are respectively connected to the upper ends of the two second bracket first connecting rods. The lower section of the second bracket first connecting rod is movably inserted into the upper end of the second bracket second connecting rod. The side of the inserted section of the second bracket first connecting rod is provided with a strip-shaped hole, and the side of the upper end of the second bracket second connecting rod is provided with a pin hole. A pin is provided in the pin hole, passing through the strip-shaped hole.

7. The height-low folding chair according to claim 1, characterized in that, The second bracket includes two second bracket connecting rods, two fixing sleeves, and a second bracket upper crossbar. The two second bracket connecting rods are arranged in parallel. The two fixing sleeves are respectively fixed to both ends of the second bracket upper crossbar, and the two fixing sleeves are slidably sleeved on the upper ends of the two second bracket connecting rods. A fixing point is provided at the upper end of the second bracket connecting rod to prevent the fixing sleeve from sliding down so as to ensure the lowest point position of the fixing sleeve.

8. The high-low folding chair according to claim 1, characterized in that, The high-low folding chair also includes a backrest support and a backrest fixing plate. The lower end of the backrest support is axially fixed to the upper section of the second support. A buckle point is provided above the hinge point between the second support and the backrest support. One end of the backrest fixing plate is axially fixed to the lower section of the backrest support, and the other end of the backrest fixing plate is provided with a latch that cooperates with the buckle point.

9. The high-low folding chair according to claim 1, characterized in that, The high-low folding chair also includes an armrest support and a backrest support. The lower end of the armrest support is axially fixed to the upper end of the first support, and the upper end of the backrest support is axially fixed to the upper end of the armrest support. The upper end of the second support is provided with a buckle point, and the lower end of the backrest support is provided with a latch that cooperates with the buckle point.

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