Foldable chair frame and chair

Abstract

The utility model relates to the technical field of chairs, and discloses a foldable chair frame and chairs, the foldable chair frame has an unfolded state and a folded state, and comprises a first frame, a second frame and a third frame, the first frame comprises a first support rod, a second support rod, a third support rod and a fourth support rod which are sequentially and rotatably connected end to end; the second frame comprises a fifth supporting rod, a sixth supporting rod, a seventh supporting rod and an eighth supporting rod which are sequentially and rotatably connected end to end; wherein the fifth supporting rod is rotatably connected with the first supporting rod, the sixth supporting rod is rotatably connected with the second supporting rod, the seventh supporting rod is rotatably connected with the third supporting rod, and the eighth supporting rod is rotatably connected with the fourth supporting rod; when the chair frame is switched from the unfolded state to the folded state, the first supporting rod, the second supporting rod, the third supporting rod, the fourth supporting rod, the fifth supporting rod, the sixth supporting rod, the seventh supporting rod and the eighth supporting rod are gradually drawn close from outside to inside. The folding chair has the advantages that the chair frame is small in occupied space after being folded, convenient to fold and unfold and simple in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a foldable chair frame and a seat. Background Art

[0002] Many outdoor chairs are foldable for easy carrying. When unfolded, they can be used as normal chairs. When not in use, the chairs can be folded for easy storage and carrying.

[0003] The existing chairs of this type mainly include a chair frame and a cloth cover, wherein the cloth cover is covered on the chair frame, and since the cloth cover is flexible, it will be folded along with the folding of the chair frame. After the chair frame of the existing chairs of this type is folded, the space occupied by the chair frame is still large, and the structure is relatively complex. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a foldable chair frame and seat which occupies little space after being folded, is easy to fold and unfold, and has a simple structure.

[0005] The utility model solves the technical problem by adopting a technical solution of providing a foldable chair frame having an unfolded state and a folded state, including:

[0006] The first frame comprises a first support rod, a second support rod, a third support rod and a fourth support rod which are rotatably connected end to end in sequence;

[0007] The second frame comprises a fifth support rod, a sixth support rod, a seventh support rod and an eighth support rod which are rotatably connected end to end in sequence; wherein the fifth support rod is rotatably connected to the first support rod, the sixth support rod is rotatably connected to the second support rod, the seventh support rod is rotatably connected to the third support rod, and the eighth support rod is rotatably connected to the fourth support rod;

[0008] When the chair frame switches from the unfolded state to the folded state, the first support rod, the second support rod, the third support rod, the fourth support rod, the fifth support rod, the sixth support rod, the seventh support rod and the eighth support rod gradually move closer from the outside to the inside;

[0009] Among them, the third support rod, the fourth support rod, the fifth support rod and the eighth support rod all include a lower rod section and an upper rod section, and the upper rod section is detachably connected to the lower rod section; when the chair frame is switched to the folded state, the upper rod section can be removed from the lower rod section to reduce the height space occupied by the third support rod, the fourth support rod, the fifth support rod and the eighth support rod.

[0010] Further, the lengths of the third support rod and the fourth support rod are greater than the lengths of the first support rod and the second support rod, and the lengths of the fifth support rod and the eighth support rod are greater than the lengths of the sixth support rod and the seventh support rod;

[0011] When the chair frame is switched to the unfolded state, the third support rod and the fourth support rod as well as the fifth support rod and the eighth support rod form the backrest support of the chair frame.

[0012] Furthermore, when the chair frame is switched to the folded state and all the upper rod ends are removed from the lower rod ends, the height space occupied by the third support rod, the fourth support rod, the fifth support rod and the eighth support rod can be reduced by half.

[0013] Furthermore, a flexible connector is provided between the upper rod segment and the lower rod segment, and when all the upper rod segments are removed from all the lower rod segments, all the upper rod segments can be flipped downward and folded into the lower rod segment.

[0014] Furthermore, the lower end of the upper rod section is detachably plugged into the upper end of the lower rod section.

[0015] Furthermore, the lower end of the upper rod section has a step surface, and when the upper rod section is plugged into the lower rod section, the step surface abuts against the upper end of the lower rod section.

[0016] Further, the first support rod, the second support rod, the sixth support rod and the seventh support rod have the same length;

[0017] The third support rod, the fourth support rod, the fifth support rod and the eighth support rod have the same length.

[0018] The utility model solves the technical problem by adopting a technical solution, and further proposes a seat, comprising:

[0019] The above-mentioned foldable chair frame;

[0020] The cloth cover is sleeved on the chair frame, and the cloth cover can be folded along with the folding of the chair frame.

[0021] Furthermore, the cloth cover has a plurality of sleeve connecting parts, wherein one sleeve connecting part is sleeved at the connection between the first support rod and the second support rod; one sleeve connecting part is sleeved at the connection between the sixth support rod and the seventh support rod; one sleeve connecting part is sleeved at the connection between the third support rod and the fourth support rod; and one sleeve connecting part is sleeved at the connection between the eighth support rod and the fifth support rod.

[0022] Compared with the prior art, the utility model has at least the following beneficial effects:

[0023] In the utility model, the chair frame is composed of a first frame and a second frame, the first frame includes a first support rod, a second support rod, a third support rod and a fourth support rod connected end to end, and the second frame includes a fifth support rod, a sixth support rod, a seventh support rod and an eighth support rod connected end to end, and the overall structure is simple. Moreover, when not in use, the first to eighth support rods can be gradually brought together from the outside to the inside, and the entire chair frame can be folded, so that the chair frame can be folded in seconds, the folding is simple, and the volume after folding is small, and the space occupied is small. Among them, after the chair frame is folded, all the upper rod sections can be pulled out from the lower rod sections, and the upper rod sections can be flipped and folded to the lower rod sections, so as to further reduce the space occupied by the height direction after the chair frame is folded. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the chair frame of the utility model when it is in an unfolded state;

[0025] Figure 2 It is a structural schematic diagram of the chair frame in a folding stage;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure from another perspective;

[0027] Figure 4 It is a structural schematic diagram of the chair frame after the upper rod section is partially pulled out from the lower rod section after the chair frame is folded;

[0028] Figure 5 for Figure 4 A schematic diagram of the structure from another perspective;

[0029] Figure 6 It is a schematic diagram of the structure after all the upper rod sections are pulled out from the lower rod sections after the chair frame is folded.

[0030] In the figure:

[0031] 1. The first pole; 2. The second pole; 3. The third pole; 4. The fourth pole; 5. The fifth pole; 6. The sixth pole; 7. The seventh pole; 8. The eighth pole;

[0032] 11. upper rod section; 110. step surface; 12. lower rod section; 13. flexible connector;

[0033] 100, first frame; 200, second frame. DETAILED DESCRIPTION

[0034] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] Embodiment 1:

[0040] like Figure 1-Figure 6 As shown, a foldable chair frame has an unfolded state and a folded state, and mainly includes: a first frame 100 and a second frame 200.

[0041] The first frame 100 includes a first support rod 1, a second support rod 2, a third support rod 3 and a fourth support rod 4 which are rotatably connected end to end in sequence. The second frame 200 includes a fifth support rod 5, a sixth support rod 6, a seventh support rod 7 and an eighth support rod 8 which are rotatably connected end to end in sequence; wherein the fifth support rod 5 is rotatably connected to the middle of the first support rod 1, the sixth support rod 6 is rotatably connected to the middle of the second support rod 2, the seventh support rod 7 is rotatably connected to the middle of the third support rod 3, and the eighth support rod 8 is rotatably connected to the middle of the fourth support rod 4. The connection method of the ends of each support rod may be, but is not limited to, connected by a connecting joint, and the connection method of the middle of each rod may be, but is not limited to, a hinge shaft or a bolt. When the chair frame switches from the unfolded state to the folded state, the first support rod 1, the second support rod 2, the third support rod 3, the fourth support rod 4, the fifth support rod 5, the sixth support rod 6, the seventh support rod 7 and the eighth support rod 8 gradually move closer from the outside to the inside. On the contrary, when the chair frame switches from the folded state to the unfolded state, the first support rod 1, the second support rod 2, the third support rod 3, the fourth support rod 4, the fifth support rod 5, the sixth support rod 6, the seventh support rod 7 and the eighth support rod 8 gradually move away from the inside to the outside.

[0042] The chair frame of this embodiment is composed of a first frame 100 and a second frame 200. The first frame 100 includes a first support rod 1, a second support rod 2, a third support rod 3 and a fourth support rod 4 connected end to end. The second frame 200 includes a fifth support rod 5, a sixth support rod 6, a seventh support rod 7 and an eighth support rod 8 connected end to end. The overall structure is simple. Moreover, when not in use, the first to eighth support rods 8 can be gradually brought together from the outside to the inside to fold the entire chair frame, so that the chair frame can be folded in seconds, the folding is simple, and the volume after folding is small, and the space occupied is small.

[0043] Preferably, in this embodiment, the length of the third support rod 3 and the fourth support rod 4 is greater than the length of the first support rod 1 and the second support rod 2, and the length of the fifth support rod 5 and the eighth support rod 8 is greater than the length of the sixth support rod 6 and the seventh support rod 7. When the chair frame is switched to the unfolded state, the third support rod 3 and the fourth support rod 4 as well as the fifth support rod 5 and the eighth support rod 8 form a backrest support of the chair frame, and when the user sits on the seat, the backrest support can support the back of the person to improve comfort.

[0044] The first support rod 1, the second support rod 2, the sixth support rod 6 and the seventh support rod 7 have the same length, and the third support rod 3, the fourth support rod 4, the fifth support rod 5 and the eighth support rod 8 have the same length. When the chair frame is unfolded for use, the force on the seat is balanced and the support for the occupant is balanced. In addition, the third support rod 3, the fourth support rod 4, the fifth support rod 5 and the eighth support rod 8 all include a lower rod section 12 and an upper rod section 11, and the upper rod section 11 is detachably connected to the lower rod section 12. When the chair frame is switched to the folded state, the upper rod section 11 can be removed from the lower rod section 12 to reduce the height space occupied by the third support rod 3, the fourth support rod 4, the fifth support rod 5 and the eighth support rod 8. This is because when the chair frame is folded, the third support rod 3, the fourth support rod 4, the fifth support rod 5 and the eighth support rod 8 are relatively long, so the height space occupied after folding is relatively large. In this embodiment, these longer support rods are arranged into two sections, namely the lower rod section 12 and the upper rod section 11, so that the upper rod section 11 can be removed from the lower rod section 12, so that the space occupied by the chair frame after folding is further reduced.

[0045] Specifically, during use, a flexible connector 13 is provided between the upper rod section 11 and the lower rod section 12, and the flexible connector 13 is preferably, but not limited to, a connecting rope. When all the upper rod sections 11 are removed from all the lower rod sections 12, all the upper rod sections 11 can be turned downward and folded into the lower rod section 12, which is equivalent to folding the third support rod 3, the fourth support rod 4, the fifth support rod 5 and the eighth support rod 8, which are longer in length, in half, so as to reduce the volume of the chair frame after folding and reduce the storage space occupied by it. Among them, the lower end of the upper rod section 11 of this embodiment can be detachably plugged into the upper end of the lower rod section 12, which is convenient for disassembly and assembly. There is a step surface 110 at the lower end of the upper rod section 11. When the upper rod section 11 is plugged into the lower rod section 12, the step surface 110 abuts against the upper end of the lower rod section 12. The step surface 110 limits the distance of the upper rod section 11 inserted into the lower rod section 12 to ensure structural stability.

[0046] During use, in this embodiment, when the chair frame is folded, all the upper rod sections 11 can be pulled out from the lower rod sections 12, and the upper rod sections 11 can be flipped over and folded into the lower rod sections 12 to further reduce the space in the height direction occupied by the chair frame after it is folded.

[0047] Embodiment 2:

[0048] A seat, mainly comprising:

[0049] The foldable chair frame in the first embodiment;

[0050] The cloth cover (not shown in the figure) is mounted on the chair frame, and the cloth cover can be folded as the chair frame is folded. When in use, the passenger sits on the cloth cover. Specifically, the cloth cover has a plurality of sleeve joints, and sleeve joints are provided at least at the four corners of the cloth cover. Among them, one sleeve joint is sleeved at the connection between the first support rod 1 and the second support rod 2; one sleeve joint is sleeved at the connection between the sixth support rod 6 and the seventh support rod 7; one sleeve joint is sleeved at the connection between the third support rod 3 and the fourth support rod 4; one sleeve joint is sleeved at the connection between the eighth support rod 8 and the fifth support rod 5. The cloth cover is detachably connected to the chair frame through a plurality of sleeve joints. The cloth cover can be folded as the chair frame is folded, and the cloth cover can be easily removed from the chair frame, which is very convenient to use.

Claims

1. A foldable chair frame having an unfolded state and a folded state, characterized in that: include: The first frame comprises a first support rod, a second support rod, a third support rod and a fourth support rod which are rotatably connected end to end in sequence; The second frame comprises a fifth support rod, a sixth support rod, a seventh support rod and an eighth support rod which are rotatably connected end to end in sequence; wherein the fifth support rod is rotatably connected to the first support rod, the sixth support rod is rotatably connected to the second support rod, the seventh support rod is rotatably connected to the third support rod, and the eighth support rod is rotatably connected to the fourth support rod; When the chair frame switches from the unfolded state to the folded state, the first support rod, the second support rod, the third support rod, the fourth support rod, the fifth support rod, the sixth support rod, the seventh support rod and the eighth support rod gradually move closer from the outside to the inside; Among them, the third support rod, the fourth support rod, the fifth support rod and the eighth support rod all include a lower rod section and an upper rod section, and the upper rod section is detachably connected to the lower rod section; when the chair frame is switched to the folded state, the upper rod section can be removed from the lower rod section to reduce the height space occupied by the third support rod, the fourth support rod, the fifth support rod and the eighth support rod.

2. The foldable chair frame according to claim 1, characterized in that: The lengths of the third support rod and the fourth support rod are greater than the lengths of the first support rod and the second support rod, and the lengths of the fifth support rod and the eighth support rod are greater than the lengths of the sixth support rod and the seventh support rod; When the chair frame is switched to the unfolded state, the third support rod and the fourth support rod as well as the fifth support rod and the eighth support rod form the backrest support of the chair frame.

3. The foldable chair frame according to claim 1, characterized in that: When the chair frame is switched to the folded state and all the upper rod sections are removed from the lower rod sections, the height space occupied by the third support rod, the fourth support rod, the fifth support rod and the eighth support rod can be reduced by half.

4. The foldable chair frame according to claim 1 or 3, characterized in that: A flexible connecting piece is provided between the upper rod section and the lower rod section. When all the upper rod sections are removed from all the lower rod sections, all the upper rod sections can be turned downward and folded into the lower rod sections.

5. The foldable chair frame according to claim 4, characterized in that: The lower end of the upper rod section is detachably plugged into the upper end of the lower rod section.

6. The foldable chair frame according to claim 5, characterized in that: The lower end of the upper rod section has a step surface, and when the upper rod section is plugged into the lower rod section, the step surface abuts against the upper end of the lower rod section.

7. The foldable chair frame according to claim 1, characterized in that: The first support rod, the second support rod, the sixth support rod and the seventh support rod have the same length; The third support rod, the fourth support rod, the fifth support rod and the eighth support rod have the same length.

8. A seat, characterized in that: include: A foldable chair frame as described in any one of claims 1 to 7; The cloth cover is sleeved on the chair frame, and the cloth cover can be folded along with the folding of the chair frame.

9. The seat according to claim 8, characterized in that The cloth sleeve has a plurality of sleeve connecting parts, wherein one sleeve connecting part is sleeved at the connection between the first support rod and the second support rod; one sleeve connecting part is sleeved at the connection between the sixth support rod and the seventh support rod; one sleeve connecting part is sleeved at the connection between the third support rod and the fourth support rod; and one sleeve connecting part is sleeved at the connection between the eighth support rod and the fifth support rod.

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