WO2011140880A1 - Foldable chair - Google Patents

Abstract

A foldable chair comprises a support part with a folding state and an extending state, in extending state, the cross section of the support part is in a sequentially connected V-shape, wherein support legs are formed by side faces of two sides of the V-shape top, and in folding state, the support part is in a substantially flat plate shape; a cover part, with at least one end is connected to one side of the support part.

Description

 Folding chair

 The present invention relates to the field of seats, and in particular to a folding chair. Background technique

 When people go out, they often need to sit down and take care of things. However, in public places, seats for pedestrians cannot be provided anywhere. Therefore, a portable seat is needed to make people need When you are, you can sit and rest anytime, anywhere. In addition, sometimes we also want to have a chair that is easy to move at home, and can be used wherever it is needed, without being limited by space. Summary of the invention

 SUMMARY OF THE INVENTION An object of the present invention is to provide a folding chair which is portable, lightweight and compact, and which solves the above technical problems.

 In view of the above, according to the present invention, there is provided a folding chair comprising: a supporting portion having a folded state and an extended state, and in the extended state, the cross section of the supporting portion exhibits a V-shaped shape which is sequentially connected, V-shaped The sides on both sides of the top end form legs, and in the folded state, the support portion is formed substantially in a flat shape; and the cover portion, at least one end of the cover portion is connected to one side of the support portion.

 Further, according to the folding chair of the present invention, the support portion has a single layer or a multilayer structure. Further, according to the folding chair of the present invention, at least a portion of the support portion has a multi-layered structure that extends beyond the corner of the V-shaped concave portion of the support portion formed between adjacent V-shaped shapes .

Further, according to the folding chair of the present invention, the side edges of the cover portion are formed in a circular arc shape. Further, according to the folding chair of the present invention, in the extended state, the width of the leg in the middle of the support portion is larger than the width of the legs on both sides, and the width of the intermediate leg is equivalent to the width of the center of the arc-shaped cover portion. Further, according to the folding chair of the present invention, the shape of the cover portion is a rectangular, square or other form of regular polygon.

 Further, according to the folding chair of the present invention, the cover portion is a polygonal shape having an even number of sides, and in the plurality of legs included in the support portion, in the extended state, the width of the leg varies from the cover portion to the polygonal shape of the cover portion Both sides gradually increase toward the center.

 Further, according to the folding chair of the present invention, the opposite ends of the cover portion are respectively connected to both sides of the support portion, and the cover portion can be folded at the intermediate portion thereof in a direction parallel to both ends.

 Further, according to the folding chair of the present invention, one end of the cover portion is connected to one side of the support portion, the other end of the cover portion has a first insertion portion, and the other side of the support portion has a function of cooperating with the first insertion portion The first insert.

 Further, the folding chair according to the present invention, wherein the first insertion portion is provided with a second insertion portion, and the first insertion portion has a second insertion portion that cooperates with the second insertion portion.

 Further, the folding chair according to the present invention, wherein the folding chair is made of cardboard, plastic plate, wood board or alloy plate.

 Further, according to the folding chair of the present invention, the surface of the folding chair is coated with a waterproof layer or is covered with a waterproof film.

 Further, according to the folding chair of the present invention, the support portion is formed by a plurality of support portions which are sequentially bonded together by the side faces opposed to each other, and the surface of the support portion other than the side surface for bonding is provided with a waterproof layer or waterproof membrane.

 Further, according to the folding chair of the present invention, the inner side of the cover portion is provided with a reinforcing plate. Further, a folding chair according to the present invention, wherein the reinforcing plate is made of cardboard, wood board, plastic board or alloy sheet.

 Further, according to the folding chair of the present invention, the support portion includes an integral outer contour and a support plate disposed at an inner middle portion of the outer contour.

 The invention has the following technical effects:

A folding chair according to the present invention has a support portion and a cover portion. The folding chair can be folded up and placed in a bag when not in use, but when needed, the folding chair is extended and the cover portion is covered on the support portion. It can be used on the score. The folding chair of the invention has the advantages of convenient carrying and simple structure, and can well meet the needs of people's daily life.

 The above general description and the following detailed description are intended to be illustrative of the invention DRAWINGS

 The drawings constitute a part of this specification for the purpose of further understanding of the invention. The drawings illustrate some embodiments of the invention and, together with The same components are denoted by the same reference numerals in the drawings. In the figure:

 Figure 1 shows a schematic view of a folding chair in accordance with one embodiment of the present invention;

 Figure 2 shows another schematic view of a folding chair in accordance with one embodiment of the present invention;

 3 is a schematic view showing an open state of a lid portion of a folding chair according to an embodiment of the present invention; FIG. 4 is another schematic view showing a state in which a lid portion of a folding chair is opened according to an embodiment of the present invention;

 Figure 5 is a schematic view showing a folded state of a folding chair according to an embodiment of the present invention; Figure 6 is another schematic view showing a folded state of a folding chair according to an embodiment of the present invention; Figure 7 is a view showing another folding state according to the present invention; A schematic view of a folding chair of an embodiment;

 Fig. 8 is a view showing a folded state of a folding chair according to another embodiment of the present invention; and Figs. 9A, 9B, and 9C are schematic cross-sectional views showing a supporting portion of a folding chair according to an embodiment of the present invention. detailed description

Embodiments of the present invention will be described below with reference to the drawings, in conjunction with the exemplary embodiments. The present invention provides a folding chair, the basic structure comprising a supporting portion and a cover portion, wherein the folding chair has a folded state (non-use state) and an extended state (usage state), and in the folded state, the support portion and the cover portion When stacked together, the support portion is substantially formed into a flat shape so that the user can conveniently carry it; in the extended state, the support portion of the folding chair is extended, and the cross section of the support portion is The V-shaped shape is connected in turn, and the sides of the top end of the V-shape are formed as legs, and the extended support portion is placed on the ground at one end, and the other end is covered by the cover so that the user can sit on the cover and rest. .

 The structure of the folding chair according to the present invention will be described with reference to the exemplary embodiments in FIGS. 1 to 4. The folding chair in FIGS. 1 and 2 specifically includes: a support portion 10 having a plurality of legs 1 1 , 12 , 13 The support portion 10 has a folded state and an extended state (for example, shown in FIGS. 5 and 1, respectively); a cover portion 20, in the embodiment of FIG. 1, one end 21 of the cover portion 20 and the support portion 10 One side 14 is connected.

 According to the folding chair of the present invention, the support portion 10 may have a single layer, a double layer or even more layers. In the case of including a multi-layer structure, the support portion 10 may be partially constructed in a multi-layer structure or may be a whole. Both are constructed in a multi-layer structure. In general, the strength of the multilayer structure is better, but in the case where the support portion 10 is a single layer, the thickness of the single layer plate can be increased in order to increase the strength. In fact, the use of a multi-layer board increases the thickness of the support portion 10.

 Further, in the folding chair of one embodiment of the present invention, the support portion 10 is constructed in a two-layer structure (as shown in Figs. 9A, 9B) in order to enhance the strength of the support portion 10, thereby improving the bearing capacity. The two-layer structure shown in Fig. 9A occupies about half of the overall structure of the support portion 10, gp, substantially extending over the two legs 11 and 13 on both sides; the double layer structure shown in Fig. 9B extends beyond the support portion 10. The corners of the V-shaped recesses (at the fold lines) substantially extend over all three legs 11, 12 and 13, so that the strength of the support portion 10 can be more significantly enhanced. When the double layer structure does not exceed the corner of the above-mentioned V-shaped concave portion (for example, as shown in Fig. 9A), the effect of the lifting strength is slightly weak at this time. As shown in the figure, the above-mentioned V-shaped concave portion is formed between two adjacent V-shaped shapes.

According to the present invention, the two-layer structure (and the structure of more layers) of the support portion 10 are closely fitted together, for example, bonded. The construction of the two-layer structure can be designed according to the specific structure of the support portion 10. In the present embodiment, the support portion 10 is formed by bonding the left and right support portions 10a, 10b, as shown in Fig. 2, each support portion 10a, 10b is passed along a pre-formed fold line, for example, cardboard (for example, After the sheets of the corrugated board are folded into a desired shape, the overlapping portions of the sheets are bonded together (as shown in Figs. 9A and 9B). Specifically, in this case, after the folding molding, each of the support portions 10a, 10b includes two connecting V-shaped shapes, and the support portions 10a and 10b are connected to each other. The V-shaped shape constitutes the leg 12 in the middle of the support portion 10. At this time, in order to obtain a two-layer structure, the overlapping portion of each of the support portions 10a, 10b may be extended such that the overlapping portion extends beyond the V-shaped concave portion (as shown in FIGS. 9A and 9B, the V-shaped concave portion is in two) At the corners formed between the V-shaped shapes, it is even more preferable that the support portions 10a, 10b overlap each other over the entire extension length, thereby obtaining a desired double-layer structure and improved load-bearing capacity. Of course, since the opposite sides of the left and right support portions 10a, 10b need to be bonded, the bonded side faces may not be formed in a two-layer structure, that is, the overlapping portions may not extend to the side for connection. In other embodiments, for example, if the support portion is integrally formed, that is, the outer body contour of the support portion is formed by using one sheet material, and then a support plate is disposed at the inner center portion of the body contour, in which case The double-layer sheet can be directly used to form the main body of the support portion, thereby obtaining a two-layer structure.

 Further, it should be noted that, in the above-described manner of forming a two-layer (or multi-layer) structure by extension, alternatively, the two-layer structure may be formed without extension, which may be made in a split form. Specifically, the two-layer structure is separated at the corners of the V-shaped shape, and a layer of the plate is added to both sides of the corner of the V-shaped shape. When the two-layer structure is formed in this way, the folding problem at the corners is relatively easy to handle, because in the integrated double-layer or multi-layer structure, the formation of the crease line is high due to the large thickness of the sheet at the corners. It is required that a suitable crease line of width and depth facilitates the smooth folding of the support structure 10. In such a separate multilayer structure, the support portions 10a, 10b of the support portion 10 may be formed by joining a plurality of sheets to each other, a specific example of which is shown in Fig. 9C, wherein the support portions 10a, 10b Each of the three free sheets is bonded to each other.

The implementation of the two-layer structure is described in detail above, and for a multi-layer structure, a similar implementation can be implemented. Further, in addition to constructing the support portion 10 into a multi-layer structure, in order to further increase the load-bearing capacity of the folding chair while improving the comfort of the seat, in the embodiment shown in Fig. 1, the side of the cover portion 20 of the folding chair The edge 22 is formed in a circular arc shape. In general, the cover portion 20 of the folding chair can be directly machined into a rectangular shape (as in the embodiment shown in Figure 7), with the side edges 22 formed in the same length as the longitudinal length of the typical rectangular cover portion. The area of the seat portion of the circular-shaped cover portion 20 is increased, the comfort can be improved, and the weight to be dispersed can be assisted, and the overall area of the cover portion 20 is also increased, thereby contributing to an increase in the load. For the cover portion 20 of the present embodiment, due to the side edges 22 is formed in a circular arc shape, the lateral width of the central portion of the cover portion 20 is increased, the widths of the two end portions 21, 23 can be kept constant (compared with the original rectangular cover portion), or two can be appropriately reduced. The width of the end portions 21, 23, it is to be noted that even if the widths of the two end portions 21, 23 are slightly reduced, the overall weight receiving area of the cover portion 20 is still increased. 5 and 6 are schematic views showing the folding chair of the present embodiment in a folded state.

 Accordingly, in the case where the side edges of the cover portion 20 are formed in a circular arc shape, the width of the leg 12 in the middle of the support portion 10 is set to be larger than the width of the legs 11 and 13 on both sides, and the intermediate leg 12 is unfolded. The width is equivalent to the width of the center of the circular arc-shaped cover portion 20, as shown in Figs. Thereby, the load-bearing capacity of the folding chair can be further improved, and the stability can be increased.

 Of course, in other embodiments, even if the cover portion 20 does not have a circular arc-shaped edge but a normal rectangular shape, the width of the leg can be increased to increase the load-bearing capacity of the support portion 10. Accordingly, the width of the rectangular cover 20 also increases. For the folding chair of the present invention, the shape of the cover portion 20 may be a square or other form of regular polygon in addition to a rectangle.

 Preferably, since the supporting portion of the folding chair has a symmetrical structure, the upper cover portion is also formed in a symmetrical structure, and the cover portion is formed into a polygon having an even side. At this time, among the plurality of legs included in the support portion, the width of the plurality of legs gradually increases from the both sides of the cover portion toward the center with the polygonal shape of the cover portion, the width of the legs on both sides is the smallest, and the width of the intermediate legs is the largest.

 Further, as shown in FIG. 3, one end 21 of the cover portion 20 of the folding chair of the present embodiment is connected to one side 14 of the support portion 10, and the other end 23 of the cover portion 20 has a first insertion portion 24, and the support portion 10 The other side 15 has a first insertion portion 16 that cooperates with the first insertion portion 24. At this time, after the support portion 10 is extended, the first insertion portion 24 of the cover portion 20 is inserted into the first insertion portion 16 of the support portion 10, thereby obtaining a formed folding chair. Specifically, the first insertion portion 16 described above may be directly the inner side surface of the leg 13, that is, the first insertion portion 24 may be directly inserted into the inner side surface of the leg 13. At the same time, an additional insertion portion may be provided on the inner side of the leg 13, for example, forming a slot into which the first insertion portion 16 is inserted when the folding chair is formed.

Preferably, on the basis of the first plug portion 24 and the first insert portion 16, in order to further increase the stability of the connection, an additional insertion portion and a plug portion may be added. For example, in the first insertion above A second insertion portion (not shown) is provided at the entrance portion 16, and correspondingly, the first insertion portion 24 has a second insertion portion (not shown) that cooperates with the second insertion portion. In a typical example, both the first plug portion 24 and the second plug portion may be formed as tabs, and the first insert portion 16 and the second insert portion may be formed as slots.

 Figures 7 and 8 show another embodiment of a folding chair according to the present invention, wherein the two ends 21, 23 of the cover portion 20 are respectively connected to both sides of the support portion 10, and the cover portion 20 can be parallel to both ends thereof The direction of 21, 23 is folded in the middle. In this case, after the folding chair is folded, the two halves 20a, 20b of the lid portion 20 are folded in half along the folding line 20c at the center thereof, as shown in Fig. 8.

 Preferably, the support portion 10 of the folding chair and the portion of the cover portion 20 to be folded are pre-formed fold lines for folding and unfolding. At the same time, the folding chair of the present invention can be made of cardboard (e.g., corrugated board) for environmental protection and weight reduction. Of course, the material to be produced is not limited to paperboard, and other sheets may be used, such as wood boards, alloy sheets (preferably light alloy sheets), plastic sheets (for example, plastic corrugated sheets), and the like. When other sheets are used, the folded portions of the support portion and the lid portion can be joined by, for example, a hinge. Further, in order to obtain good waterproof performance, in the case where the folding chair is made of cardboard, a waterproof layer may be applied to the surface of the cardboard or a waterproof film may be applied. In particular, if a plastic corrugated board is used, it can be joined by bonding, and the waterproof performance is good, and no additional waterproof film or waterproof layer can be added at this time. In addition, the above-mentioned plates can be mixed and used according to actual needs.

As described above, the support portion 10 of the folding chair includes a plurality of support portions 10a, 10b which are combined with each other to form a plurality of legs, and the sides of the support portions 10a, 10b are joined by bonding, wherein, in one embodiment In the side surface of the support portions 10a, 10b for connection, no waterproof layer or waterproof film is provided. This is because sometimes the waterproof layer or the waterproof film may make the bonding strength between the interfaces low, and the connected support portions 10a, 10b may be peeled off at any time. In order to prevent the above peeling from occurring and increase the joint strength, an embodiment of the present invention performs the above-described arrangement to increase the strength between the joint interfaces of the support portions 10a, 10b. At the same time, since most of the folding chairs are waterproofed, the overall waterproofing ability is not significantly reduced. Moreover, in other embodiments, the support structure 10 can include a plurality of support portions similar to the support portions 10a, 10b described above, whereby the length of the folding chair can be correspondingly increased. Preferably, in the folding chair of the present invention, a reinforcing plate 25 (shown in Fig. 4) may be provided on the inner side of the cover portion 20 to further increase the load bearing capacity. In particular, the reinforcing sheets may be made of cardboard, wood, plastic or alloy sheets, preferably light alloy sheets. Further, the inside of the cover portion 20 can be printed or attached with a product instruction manual.

 The folding chair of the invention has a compact structure and a thickness of only about one book, and is convenient to carry. The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim A folding chair, comprising:  The support portion (10) has a folded state and a stretched state, and in the extended state, the cross section of the support portion assumes a V-shaped shape that is sequentially connected, and the sides on both sides of the top end of the V-shape form a leg (11) , 12, 13), in the superposed state, the support portion is formed substantially in a flat shape; the cover portion (20), at least one end (21) of the cover portion and one side of the support portion ( 14) Connected.  2. The folding chair according to claim 1, wherein the support portion has a single layer or a multilayer structure.  3. The folding chair according to claim 2, wherein at least a portion of the support portion has a multi-layer structure, and the multi-layer structure extends beyond the support portion to form the adjacent V-shape The corner of the V-shaped recess between the shaped shapes.  The folding chair according to claim 1, characterized in that the side edges (21, 22) of the cover portion are formed in a circular arc shape.  The folding chair according to claim 4, characterized in that, in the extended state, the width of the leg (12) in the middle of the support portion is greater than the width of the legs (11, 13) on both sides, the middle The width of the legs is comparable to the width of the arcuate center of the cover.  6. The folding chair according to claim 1, wherein the shape of the cover portion is a rectangular, square or other form of regular polygon.  The folding chair according to claim 6, wherein the cover portion has a polygonal shape with even sides, and in the plurality of legs included in the support portion, in the extended state, the legs The width of the cover gradually increases from both sides of the cover portion toward the center as the polygonal shape of the cover portion.  8. The folding chair according to claim 1, wherein opposite ends of the cover portion are respectively connected to both sides of the support portion, and the cover portion can be in a direction parallel to the both ends The middle part is folded. 9. The folding chair according to claim 1, wherein one end (21) of the cover portion Connected to one side (14) of the support portion, the other end (23) of the cover portion has a first insertion portion (24), and the other side (15) of the support portion has the first insertion The first insertion portion (16) of the mating portion (24) is matched.  The folding chair according to claim 9, wherein the first insertion portion is provided with a second insertion portion, and the first insertion portion has a matching with the second insertion portion The second insertion portion.  The folding chair according to any one of claims 1 to 10, wherein the folding chair is made of cardboard, plastic plate, wood board or alloy plate.  The folding chair according to claim 11, wherein the surface of the folding chair is coated with a waterproof layer or a waterproof film.  The folding chair according to claim 11, wherein the support portion is formed by a plurality of support portions (10a, 10b) which are sequentially bonded together by side faces opposed to each other, and the support portion is used for A waterproof layer or a waterproof film is provided on the surface other than the bonded side.  The folding chair according to claim 1, characterized in that the inner side of the cover portion is provided with a reinforcing plate (25).  15. The folding chair according to claim 14, wherein the reinforcing plate is made of cardboard, wood board, plastic board or alloy sheet.  16. The folding chair according to claim 1, wherein the support portion includes an integral outer contour and a support plate disposed at an inner intermediate portion of the outer contour.