Portable folding chair
By incorporating adjustment holes and crossbars on the seat frame, the design solves the problem of existing folding chairs lacking height adjustment, enabling multi-level height adjustment and portable storage. This portable height-adjustable folding chair enhances both user comfort and practicality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIXIANG BLOW MOLDING FURNITURE (NINGBO) CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-23
AI Technical Summary
Existing folding chairs lack height adjustment functions, which cannot meet the height needs of different users, affecting their comfort and practicality and limiting their application range.
A portable height-adjustable folding chair was designed. Adjustment holes were set on the support rod of the seat frame, and the height of the seat was adjusted by inserting an adjustment crossbar into the adjustment holes at different heights. Combined with the flip and limiting structure of the backrest frame, the overall storage space is kept small after folding.
The seat features multi-level height adjustment, enhancing comfort and practicality while reducing storage space and making it easy to carry and transport.
Smart Images
Figure CN224387061U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of furniture technology, and in particular to a portable height-adjustable folding chair. Background Technology
[0002] In today's fast-paced life, folding chairs, with their ease of storage and portability, are widely used in various scenarios such as camping, picnics, and family gatherings, and are highly favored by consumers. Current folding chair technology primarily focuses on the folding function. Through a foldable structure, the chair can be reduced in size when not in use, facilitating storage and transportation, effectively saving space, and meeting users' basic needs for portable furniture.
[0003] However, current folding chairs on the market have limited functionality, offering only folding capabilities and lacking height adjustment. This deficiency causes numerous inconveniences in practical use. For example, in outdoor camping scenarios, the ground is often uneven, and different users have varying height requirements. A fixed-height folding chair cannot guarantee a comfortable seating posture for every user, impacting the user experience. In indoor impromptu meetings or events, attendees vary significantly in height; a folding chair with a uniform height cannot accommodate people of different heights, easily leading to fatigue during prolonged use and reducing comfort and practicality. Furthermore, in specific scenarios such as painting or handicrafts, users may need to flexibly adjust the seat height according to their activity level. Existing folding chairs, lacking height adjustment, cannot meet these diverse needs, significantly limiting their application. Therefore, developing a folding chair that combines folding functionality with height adjustment is crucial to solving these existing technological problems. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a portable height-adjustable folding chair that is simple in structure and convenient for folding and height adjustment, in light of the above-mentioned existing technology.
[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a portable height-adjustable folding chair, including a seat frame and a backrest frame installed on the seat frame. The seat frame includes a first support frame and a second support frame connected to each other in an X-shaped structure when in use. The first support frame is located inside the second support frame. The first support frame includes a first left support rod, a first right support rod, and a first top crossbar. The second support frame includes a second left support rod, a second right support rod, and a second top crossbar. The first left support rod and the second left support rod are rotatably connected, and the first right support rod and the second right support rod are rotatably connected. The chair is characterized in that: at least two adjustment holes are opened on the inner sidewalls of the first left support rod and the first right support rod along the length of the rod. The adjustment holes are located above the rotatable connection point between the first support frame and the second support frame. The chair also includes an adjustment crossbar and a seat cloth. The two ends of the adjustment crossbar are respectively inserted into the adjustment holes on the corresponding sides. The first side of the seat cloth is fixed to the adjustment crossbar, and the second side extends backward and is fixed to the second top crossbar after passing around the first top crossbar.
[0006] Preferably, the first support frame is arranged diagonally downward from front to back, and the second support frame is arranged diagonally downward from back to front.
[0007] To prevent the backrest frame and seat frame from interfering with each other when folded, the backrest frame is located on the outside of the second support frame, and the lower part of the backrest frame is rotatably connected to the upper part of the second support frame.
[0008] In order to limit the opening angle of the chair back frame, a limiting member is provided on the outer side of the second support frame to limit the seat frame. The limiting member is located above the rotation connection point between the chair back frame and the second support frame.
[0009] In order for the chair to be adjustable to multiple different heights, there are 3 to 6 adjustment holes that are spaced apart.
[0010] In order to make the folded chairs all on the same folding surface, reducing packaging volume and storage space, in the folded state, the second support frame flips to the outside of the first support frame, the chair back frame flips to the outside of the second support frame, and the first support frame, the second support frame, and the chair back frame are all on the same folding surface.
[0011] To prevent the seat frame from unfolding when folded, a backrest fabric is installed on the backrest frame. In the folded state, the bottom support legs of the first and second support frames flip over to the area where the backrest fabric is located and rest on the backrest fabric. In this configuration, the backrest fabric acts as a support and limiter, confining the seat frame to the same folding surface of the backrest frame.
[0012] The adjusting crossbar can have various structures. Preferably, the adjusting crossbar includes an outer sleeve and an inner telescopic rod that can move axially relative to the outer sleeve. The inner end of the inner telescopic rod is located inside the outer sleeve, and the outer end of the inner telescopic rod extends axially out of the outer sleeve. The outer end of the outer sleeve is inserted into an adjustment hole on the corresponding side, and the outer end of the inner telescopic rod is also inserted into an adjustment hole on the corresponding side. With this configuration, the adjusting crossbar can be easily disassembled and installed from the first support frame by adjusting the extension and retraction of the inner telescopic rod.
[0013] As a preferred embodiment, an elastic element is provided between the inner end of the inner telescopic rod and the outer sleeve. The elastic element can be of various types, such as a spring or a limiting spring plate.
[0014] As another preferred embodiment, the outer sleeve has an axial slotted hole on its wall, with an opening at the end of the outer sleeve. An L-shaped limiting hole is formed in the center of the axial slotted hole along the circumference of the outer sleeve, with the bending direction of the L-shaped limiting hole facing the end of the outer sleeve. A limiting block protrudes from the wall of the inner telescopic rod, capable of moving within the axial slotted hole and the L-shaped limiting hole. With this configuration, the movement of the limiting block within the limiting slot allows for axial movement of the inner telescopic rod relative to the outer sleeve, thereby enabling the installation and removal of the adjusting crossbar.
[0015] Compared with the prior art, the advantages of this utility model are as follows: the inner sidewalls of the first left support rod and the first right support rod of the seat frame of the portable height-adjustable folding chair have at least two adjustment holes along the length of the rod. The two ends of the adjustment crossbar are respectively inserted into the adjustment holes on the corresponding sides. The first side of the seat cloth is fixed to the adjustment crossbar, and the second side extends backward and is fixed to the second top crossbar after passing around the first top crossbar. By installing the adjustment crossbar in the adjustment holes at different heights, the rotation angle between the first support frame and the second support frame of the seat frame can be changed. With the synchronous adjustment of the seat cloth, the height adjustment of the chair can be realized, so that the seat is in different height positions. The adjustment is very convenient. When folding, the first support frame and the second support frame can be flipped to the same folding surface. It is easy to carry, has a small storage space, and is easy to package and transport. Attached Figure Description
[0016] Figure 1 This is a structural schematic diagram (first gear) of the portable height-adjustable folding chair according to Embodiment 1 of this utility model;
[0017] Figure 2 This is a structural schematic diagram (two-position) of the portable height-adjustable folding chair according to Embodiment 1 of this utility model;
[0018] Figure 3 This is a structural schematic diagram (three positions) of the portable height-adjustable folding chair according to Embodiment 1 of this utility model;
[0019] Figure 4 This is a structural schematic diagram (four positions) of the portable height-adjustable folding chair according to Embodiment 1 of this utility model;
[0020] Figure 5 This is a structural schematic diagram (five positions) of the portable height-adjustable folding chair according to Embodiment 1 of this utility model;
[0021] Figure 6 for Figure 5 The diagram shows the structure of the height-adjustable folding chair after removing the seat fabric and backrest fabric.
[0022] Figure 7 This is a structural schematic diagram (folded state) of the portable height-adjustable folding chair according to Embodiment 1 of this utility model;
[0023] Figure 8 This is a schematic diagram of the installation structure of the adjusting crossbar according to Embodiment 1 of this utility model;
[0024] Figure 9 This is a schematic diagram of another adjusting crossbar according to Embodiment 1 of this utility model;
[0025] Figure 10 This is a schematic diagram of another adjusting crossbar according to Embodiment 1 of this utility model;
[0026] Figure 11 This is a schematic diagram of the structure of the portable height-adjustable folding chair (four positions) according to Embodiment 2 of this utility model. Detailed Implementation
[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0028] like Figure 1 As shown, the portable height-adjustable folding chair of this embodiment includes a seat frame 1 and a backrest frame 2 mounted on the seat frame 1. The seat frame 1 includes a first support frame 11 and a second support frame 12 that are interconnected in an X-shaped structure when in use, so as to... Figure 1 The direction indicated by the middle arrow A is to the right. The first support frame 11 is arranged diagonally downward from front to back, and the second support frame 12 is arranged diagonally downward from back to front.
[0029] The first support frame 11 is located inside the second support frame 12. The first support frame 11 includes a first left support rod 111, a first right support rod 112, a first top crossbar 113, and a bottom crossbar 115, i.e., the first support frame 11 is square-shaped. The second support frame 12 includes a second left support rod 121, a second right support rod 122, and a second top crossbar 123, i.e., the second support frame is U-shaped. Foot covers 125 are installed at the bottom of the second left support rod 121 and the second right support rod 122. The first left support rod 111 is rotatably connected to the second left support rod 121, and the first right support rod 112 is rotatably connected to the second right support rod 122.
[0030] The chair back frame 2 is U-shaped and located on the outside of the second support frame 12. The lower part of the chair back frame 2 is rotatably connected to the upper part of the second support frame 12, and the chair back fabric 5 is installed on the chair back frame 2. A limiting member 124 for limiting the seat frame 1 is protruding on the outside of the second support frame 12. The limiting member 124 is located above the rotatable connection point B between the chair back frame 2 and the second support frame 12.
[0031] At least two adjustment holes 114 are opened on the inner sidewalls of the first left support rod 111 and the first right support rod 112 along the length of the rod. In this embodiment, the first left support rod 111 and the first right support rod 112 are each provided with five adjustment holes 114, which are evenly distributed at intervals. The adjustment holes 114 are located above the rotation connection point C between the first support frame 11 and the second support frame 12, and each adjustment hole 114 corresponds to an adjustment position.
[0032] The two ends of the adjusting crossbar 3 are respectively inserted into the adjusting holes 114 on the corresponding sides. The first side of the seat cloth 4 is fixed to the adjusting crossbar 3, and the second side extends backward after passing over the first top crossbar 113 and is fixed to the second top crossbar 123. Figure 1 As shown, the adjusting bar 3 is inserted into the adjusting hole 114 at the highest position. At this time, the distance between the first top bar 113 and the second top bar 123 is the largest, and the chair is in the first position, which is the lowest position, that is, the seat height is at the lowest position.
[0033] like Figure 2 As shown, the adjusting bar 3 is inserted into the adjusting hole 114 at the second highest position. At this time, the distance between the first top bar 113 and the second top bar 123 becomes smaller, the chair is in the second position, and the seat height increases.
[0034] like Figure 3 As shown, adjusting bar 3 is in Figure 2 Adjust the chair down one level from the previous setting; the chair is now in level three, and the seat height continues to rise. Figure 4 As shown, adjusting bar 3 is in Figure 3 Adjusting the chair down one level from its base position, placing it in position four, further increases the seat height. For example... Figure 5 and Figure 6 As shown, adjusting bar 3 is in Figure 4 Adjust the chair down one level from the previous level, and the chair will be in the fifth level. At this time, the distance between the first top crossbar 113 and the second top crossbar 123 is the smallest, and the seat height is raised to the highest position.
[0035] The chair can be in different positions before folding. In this embodiment, for example... Figure 7As shown, before folding, the chair is in position one. During folding, the second support frame 12 flips forward. After folding, the second support frame 12 flips to the outside of the first support frame 11, the second top crossbar 123 is located outside of the first top crossbar 113, and the backrest frame 2 flips to the outside of the second support frame 12. The first support frame 11, the second support frame 12, and the backrest frame 2 are on the same folding surface. Furthermore, the bottom support feet of the first support frame 11 and the second support frame 12 flip to the area where the backrest fabric 5 is located and rest on the backrest fabric 5. At this time, the backrest fabric 5 acts as a support and limiter, limiting the seat frame 1 to the same folding surface as the backrest frame 2. The folded chair is flat overall, requiring less storage and packaging space, making it easy to carry.
[0036] like Figures 8 to 10 As shown, the adjusting crossbar 3 in this embodiment includes an outer sleeve 31 and an inner telescopic rod 32 that can move axially relative to the outer sleeve. The inner end of the inner telescopic rod 32 is located inside the outer sleeve 31, and the outer end of the inner telescopic rod 32 extends axially out of the outer sleeve 31. The outer end of the outer sleeve 31 is inserted into the adjusting hole 114 on the corresponding side, and the outer end of the inner telescopic rod 32 is inserted into the adjusting hole 114 on the corresponding side.
[0037] like Figure 8 As shown, a spring 33 is provided between the inner end of the inner telescopic rod 32 and the outer sleeve 31. When the spring 33 is compressed, the inner telescopic rod 32 moves axially inward relative to the outer sleeve 31. When the spring 33 returns to its original position, the inner telescopic rod 32 moves axially outward relative to the outer sleeve 31. When the adjusting crossbar 3 is inserted into the adjusting hole 114, the spring 33 is in the reset position but still in a compressed state. Under the action of the spring 33, the adjusting crossbar 3 is inserted into the adjusting hole 114.
[0038] like Figure 9 As shown, a limiting spring plate 34 is provided between the inner end of the inner telescopic rod 32 and the outer sleeve 31. When the adjusting crossbar 3 needs to disengage from the adjusting hole 114, sufficient external force is applied to the inner telescopic rod 32, and the limiting spring plate 34 disengages from the outer sleeve 31, allowing the inner telescopic rod 32 to move axially relative to the outer sleeve 31. When the adjusting crossbar 3 is inserted into the adjusting hole 114, the limiting spring plate is limited on the outer sleeve 31, preventing the inner telescopic rod 32 from moving axially relative to the outer sleeve 31. The specific structure of the limiting spring plate 34 is a conventional structure and will not be described in detail here.
[0039] like Figure 10As shown, in this embodiment, the outer sleeve 31 has an axial strip hole 311 on its wall. The axial strip hole 311 has an opening at the end of the outer sleeve 31. An L-shaped limiting hole 312 is formed in the middle of the axial strip hole 311 along the circumference of the outer sleeve 31, and the bending direction of the L-shaped limiting hole 312 faces the end of the outer sleeve 31. A limiting block 321 that can move within the axial strip hole 311 and the L-shaped limiting hole 312 is provided on the wall of the inner telescopic rod 32. When the adjusting crossbar 3 is inserted into the adjusting hole 114, the limiting block 321 is engaged in the L-shaped limiting hole 312. When it is necessary to disengage the adjusting crossbar 3 from the adjusting hole 114, the limiting block 321 first disengages from the L-shaped limiting hole 312 and then slides into the axial strip hole 311, thereby realizing the axial telescopic movement of the inner telescopic rod 32.
[0040] Example 2:
[0041] like Figure 11 As shown, in this embodiment, wide foot covers 126 are installed at the bottom of the second left support rod 121 and the second right support rod 122. The contact surface between the wide foot covers 126 and the ground is flat and large, making the chair more stable. The rest of the structure in this embodiment is the same as in Embodiment 1, and will not be described further here.
[0042] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.
Claims
1. A portable height-adjustable folding chair, comprising a seat frame (1) and a backrest frame (2) mounted on the seat frame (1), wherein the seat frame (1) includes a first support frame (11) and a second support frame (12) connected to each other in an X-shaped structure in use, the first support frame (11) being disposed inside the second support frame (12), the first support frame (11) including a first left support rod (111), a first right support rod (112) and a first top crossbar (113), the second support frame (12) including a second left support rod (121), a second right support rod (122) and a second top crossbar (123), the first left support rod (111) being rotatably connected to the second left support rod (121), and the first right support rod (112) being rotatably connected to the second right support rod (122), characterized in that: At least two adjustment holes (114) are provided on the inner sidewalls of the first left support rod (111) and the first right support rod (112) along the length of the rod. The adjustment holes (114) are located above the rotation connection point of the first support frame (11) and the second support frame (12). The adjustment crossbar (3) and seat cloth (4) are also provided. The two ends of the adjustment crossbar (3) are respectively inserted into the adjustment holes (114) on the corresponding sides. The first side of the seat cloth (4) is fixed on the adjustment crossbar (3), and the second side extends backward after passing around the first top crossbar (113) and is fixed on the second top crossbar (123).
2. The portable height-adjustable folding chair according to claim 1, characterized in that: The first support frame (11) is arranged diagonally downward from front to back, and the second support frame (12) is arranged diagonally downward from back to front.
3. The portable height-adjustable folding chair according to claim 1, characterized in that: The chair back frame (2) is located on the outside of the second support frame (12), and the lower part of the chair back frame (2) is rotatably connected to the upper part of the second support frame (12).
4. The portable height-adjustable folding chair according to claim 3, characterized in that: A limiting member (124) for limiting the seat frame (1) is provided on the outer side of the second support frame (12). The limiting member (124) is located above the rotational connection point between the backrest frame (2) and the second support frame (12).
5. The portable height-adjustable folding chair according to claim 1, characterized in that: There are 3 to 6 adjustment holes (114) that are spaced apart.
6. The portable height-adjustable folding chair according to claim 1, characterized in that: In the folded state, the second support frame (12) flips to the outside of the first support frame (11), the chair back frame (2) flips to the outside of the second support frame (12), and the first support frame (11), the second support frame (12) and the chair back frame (2) are on the same folding surface.
7. The portable height-adjustable folding chair according to claim 6, characterized in that: The chair back frame (2) is equipped with a chair back cloth (5). In the folded state, the bottom support feet of the first support frame (11) and the second support frame (12) are flipped to the area where the chair back cloth (5) is located and placed on the chair back cloth (5).
8. The portable height-adjustable folding chair according to any one of claims 1 to 7, characterized in that: The adjusting crossbar (3) includes an outer tube (31) and an inner telescopic rod (32) that can move axially relative to the outer tube. The inner end of the inner telescopic rod (32) is located inside the outer tube (31), and the outer end of the inner telescopic rod (32) extends axially out of the outer tube (31). The outer end of the outer tube (31) is inserted into the adjusting hole (114) on the corresponding side, and the outer end of the inner telescopic rod (32) is inserted into the adjusting hole (114) on the corresponding side.
9. The portable height-adjustable folding chair according to claim 8, characterized in that: An elastic element is provided between the inner end of the inner telescopic rod (32) and the outer tube (31).
10. The portable height-adjustable folding chair according to claim 8, characterized in that: The outer sleeve (31) has an axial strip hole (311) on its wall. The axial strip hole (311) has an opening at the end of the outer sleeve (31). An L-shaped limiting hole (312) is formed in the middle of the axial strip hole (311) along the circumference of the outer sleeve (31). The bending direction of the L-shaped limiting hole (312) is towards the end of the outer sleeve (31). The inner telescopic rod (32) has a limiting block (321) protruding from its wall that can move within the axial strip hole (311) and the L-shaped limiting hole (312).