Foldable stand chair
By using a cross-shaped main pole and folding component design, the foldable structure of the grandstand chairs is achieved, solving the problem of poor fit between the base and the human sitting posture, and improving the audience's viewing experience and portability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SUNSHINE LEISURE PROD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-05-15
AI Technical Summary
The existing design of the grandstand chair base cannot be freely adjusted in shape, resulting in poor fit to the human sitting posture and easily causing audience fatigue.
Design a foldable grandstand chair that uses a cross-shaped main rod and folding components, combined with a retractable latch and sliding structure, to achieve simultaneous unfolding and folding of the base and backrest, forming a curve that conforms to the human sitting posture.
It improves the comfort of the grandstand chairs, reduces spectator fatigue while watching the game, and is easy to carry and install.
Smart Images
Figure CN224235013U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grandstand chair technology, and in particular to a foldable grandstand chair. Background Technology
[0002] Tiered stands are mostly located in indoor stadiums or outdoor stadiums for spectators to watch the game.
[0003] To increase comfort while sitting in the stands, many spectators bring their own chairs and place them on the stands. This allows them to sit comfortably without touching the hard, cold stands. However, most of these chairs have rectangular bases that cannot be adjusted, resulting in a poor fit between the base and the human body, which can easily cause fatigue. Utility Model Content
[0004] To address the aforementioned problems, this invention provides a foldable grandstand chair that better conforms to the human sitting posture, thereby improving comfort and preventing fatigue for users while watching the game.
[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:
[0006] This utility model provides a foldable grandstand chair, including a base and a backrest rotatably connected to the base. The backrest is foldable. The base includes two main rods that are relatively spaced apart and arranged in a cross configuration, and a folding assembly disposed between the two main rods. The folding assembly is used to cooperate with the two main rods to move closer or further apart from each other, and to enable the base and the backrest to switch synchronously between folding and unfolding.
[0007] Furthermore, the folding assembly includes two parallel cross tube units and a first telescopic rod disposed between the two cross tube units. The ends of the two cross tube units near the first telescopic rod are rotatably connected to the two ends of the first telescopic rod, and the other ends away from the first telescopic rod are rotatably connected to the corresponding main rods. The first telescopic rod is provided with a latch for locking its telescopic length so that the two main rods are stably opened when the folding assembly is unfolded. The cross tube unit includes two cross tubes that are hinged to each other, and the lengths of the two cross tubes in the same cross tube unit are different, so that the base is wider at the front and narrower at the back when unfolded.
[0008] Furthermore, each of the two main rods has a detachable slide rail frame at one end near the backrest. The slide rail frame has a slide rail, and the cross tube unit at one end near the backrest is movably assembled into the corresponding slide rail, forming a movable rotation support point on the slide rail.
[0009] Furthermore, the extension direction of the groove is parallel to the extension direction of the corresponding main rod, and the length of the groove in its extension direction is less than half the length of the main rod.
[0010] Furthermore, the chair back includes vertical bars rotatably connected to two main bars, a horizontal bar assembly disposed between the two vertical bars, and a connecting rod disposed between the two horizontal bar assemblies; the connecting rod and the two horizontal bar assemblies form an I-shaped backrest structure.
[0011] Furthermore, the crossbar assembly includes two crossbars and a rotating connecting seat disposed between the two crossbars, with hinge slots provided at both ends of the rotating connecting seat; one end of each crossbar is rotatably connected to the vertical bar, and the other end is rotatably connected to the hinge slot; the two rotating connecting seats are connected by the connecting rod.
[0012] Furthermore, an L-shaped connector is provided between the base and the backrest to allow the vertical rod to rotate relative to the main rod; the L-shaped connector has a stop portion on the side facing the main rod to limit the rotation of the vertical rod, and the outer edge of the stop portion has a flange structure to prevent it from scratching the base.
[0013] Furthermore, it also includes armrest assemblies respectively disposed on both sides of the base. The armrest assembly includes an armrest and a second telescopic rod. One end of the armrest is rotatably connected to the backrest, and the other end is rotatably connected to the second telescopic rod. The end of the second telescopic rod opposite to the armrest is rotatably connected to the base.
[0014] Furthermore, the second telescopic rod is provided with a retractable ball bearing, which is used to adjust the telescopic length of the second telescopic rod to cooperate with the handrail assembly in switching between unfolding and folding.
[0015] Furthermore, the bottom of the base is provided with an anti-slip pad for preventing slippage; and / or, the side wall of the main rod is provided with a rotatable U-shaped fastener for fixing the base to the grandstand.
[0016] In summary, the technical solution provided by this utility model has the following beneficial effects:
[0017] The two main rods of the base are arranged in a cross pattern with a relatively large distance between them to ensure that the base forms a base structure that conforms to the human sitting posture after the folding assembly is unfolded. This can better conform to the human sitting posture, improve comfort, and prevent users from getting tired while watching the game. Attached Figure Description
[0018] Figure 1The diagram shown is a structural schematic of the foldable grandstand chair in Embodiment 1 when unfolded;
[0019] Figure 2 The image shown is an exterior view of the foldable grandstand chair in the unfolded state in Embodiment 1.
[0020] Figure 3 The diagram shown is a schematic of the foldable grandstand chairs in Embodiment 1 when folded up;
[0021] Figure 4 The diagram shown is a schematic of the L-shaped connector in Embodiment 1;
[0022] Figure 5 The diagram shown is a schematic of the rotating connecting seat in Embodiment 1;
[0023] Figure 6 The diagram shown is a schematic of the latch in Embodiment 1;
[0024] Figure 7 The diagram shown is a structural schematic of the foldable grandstand chair in Embodiment 2 when unfolded;
[0025] Figure 8 The image shown is an exterior view of the foldable grandstand chair in the second embodiment when unfolded;
[0026] Figure 9 The diagram shown is a schematic of the foldable grandstand chair in Embodiment 2 when it is folded up. Detailed Implementation
[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. With reference to these descriptions, those skilled in the art should be able to understand other possible implementations and the advantages of this utility model. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components. This utility model will now be further described with reference to the accompanying drawings and specific embodiments.
[0028] Example 1
[0029] Reference Figures 1 to 6 Example 1 provides a foldable grandstand chair (hereinafter referred to as a grandstand chair), which can be installed on a tiered grandstand when in use, so that users can sit on it to watch the game or performance.
[0030] like Figure 1 and Figure 2As shown, the grandstand chair in this embodiment includes a base 1 and a backrest 2 rotatably connected to the base 1. The backrest 2 is foldable. Specifically, the base 1 includes two main rods 11 that are spaced apart on the left and right and arranged in a cross pattern, and a folding assembly 12 disposed between the two main rods 11. The folding assembly 12 is used to cooperate with the two main rods 11 to move closer or further away from each other, and to enable the base 1 and the backrest 2 to switch synchronously between folding and unfolding.
[0031] In this embodiment, as Figure 1 As shown, the folding assembly 12 includes two cross tube units arranged side by side and a first telescopic rod 122 disposed between the two cross tube units.
[0032] The first telescopic rod 122 is equipped with a latch 123 to lock its telescopic length, ensuring that the two main rods 11 are stably opened when the folding assembly 12 is unfolded, thereby ensuring that the base 1 is stably unfolded. Specifically, as shown in the figure... Figure 6 As shown, the latch 123 can lock the telescopic rod length of the first telescopic rod 122 by simply snapping it backward, without the need for screws.
[0033] The cross tube unit includes two cross tubes 121 that are hinged to each other, and the lengths of the two cross tubes 121 in the same cross tube unit are different, so as to ensure that the base 1 is a trapezoid with a wider front and a narrower back when the grandstand chair is unfolded, which fits the human sitting posture curve better and thus increases the comfort of the grandstand chair.
[0034] The extension direction of the main rod 11 is defined as the front and rear directions. The two cross tubes 121 of the two cross tube units are rotatably connected to the front and rear ends of the first telescopic rod 122 at their inward ends, respectively. The two cross tubes 121 of the two cross tube units are rotatably connected to the front and rear ends of the corresponding main rod 11 at their outward ends away from the first telescopic rod 122. With the cooperation of the first telescopic rod 122, the folding assembly 12 can be folded and unfolded, and the chair back 2 can also be folded and unfolded synchronously.
[0035] The two main rods 11 of the base 1 are arranged in a cross pattern with a relatively large distance between them, so as to ensure that the base 1 forms a shape like this after the folding assembly 12 is unfolded. Figure 1 The base structure shown conforms to the curve of the human body's sitting posture, which can better fit the human body's sitting posture to improve comfort and prevent users from getting tired while watching the game.
[0036] In another preferred embodiment, such as Figure 1 As shown, each of the two main rods 11 has a detachable slide rail frame 13 near the rear end of the chair back 2. The slide rail frame 13 has a slide rail 131, and the extension direction of each slide rail 131 is parallel to the extension direction of the corresponding main rod 11.
[0037] The two cross tubes 121 are movably assembled into the corresponding slide grooves 131 at their outward ends near the backrest 2 by means of rivets, and the rivets form movable rotation support points 132 on the slide grooves 131, thus achieving a simple and durable slide groove structure.
[0038] If the slide rail 131 is damaged after a period of use, the damaged slide rail bracket 13 can be replaced to reduce the cost of use and maintenance.
[0039] More preferably, the length of the groove 131 in its extending direction is less than half the length of the main rod 11.
[0040] In use, the support point 132 is rotated and slid forward and backward on the slide 131 to match the size of the folding component 12 in real time during the folding and unfolding process. This ensures that the folded grandstand chair occupies less space and is easier to carry.
[0041] Of course, in other embodiments, a fixed rotating support point 132 can also be used, but it is not convenient to freely adjust the folding shape of the grandstand chairs, and the space occupied after folding is also larger.
[0042] In another preferred embodiment, such as Figure 1 and Figure 2 As shown, two L-shaped connectors 3 are provided between the base 1 and the backrest 2 to enable the backrest 2 to rotate relative to the main rod 11.
[0043] Further preferred, such as Figure 2 and Figure 4 As shown, the L-shaped connector 3 has a stop 31 on the side facing the main rod 11 to limit the rotation of the vertical rod, and the outer edge of the stop 31 has a flange structure 32 to prevent it from scratching the base 1.
[0044] Further preferred, such as Figure 1 and Figure 2 As shown, the chair back 2 includes vertical bars 21 rotatably connected to two main bars 11, a horizontal bar assembly 22 disposed between the two vertical bars 21, and a connecting rod 23 disposed between the two horizontal bar assemblies 22. At this time, the connecting rod 23 and the two horizontal bar assemblies 22 form an I-shaped backrest structure 24, which can improve the structural stability and support strength of the chair back 2, and also further enhance the comfort of the grandstand chair.
[0045] In this specific embodiment, each set of crossbar assemblies 22 includes two crossbars 221 and a rotating connecting seat 222 disposed between the two crossbars 221, such as Figure 5 The rotating connecting seat 222 shown has hinge grooves 223 at its left and right ends respectively.
[0046] like Figure 1 and Figure 2 As shown, the lower ends of the two L-shaped connectors 3 are rotatably connected to the rear end of the corresponding main rod 11, and the upper ends of the two L-shaped connectors 3 are sleeved on the lower end of the corresponding vertical rod 21.
[0047] One set of upper horizontal bar assembly 22 has two horizontal bars 221 whose outward ends are rotatably connected to vertical bars 21. The other set of lower horizontal bar assembly 22 has two horizontal bars 221 whose outward ends are rotatably connected to L-shaped connectors 3 on their corresponding vertical bars 21. The two horizontal bars 221 of each set of horizontal bar assembly 22 have their inward ends facing away from vertical bars 21 rotatably connected to their corresponding hinge slots 223. The two rotating connecting seats 222 are connected by connecting rods 23.
[0048] When the base 1 is folded, the two vertical rods 21 move closer to each other simultaneously, and the backrest structure 24 also folds down. Then, the chair back 2 is rotated around the rear end of the main rod 11 via the L-shaped connector 3, so that the grandstand chair can be further folded down as follows. Figure 3 The folded state shown.
[0049] When the grandstand chairs need to be unfolded, the base 1 and backrest structure 24 are unfolded simultaneously first, and then the two vertical rods 21 are rotated in the opposite direction until the two stop parts 31 abut against the corresponding main rods 11. The avoidance space formed by the flange structure 32 is used to prevent the L-shaped connector 3 from scratching the base 1.
[0050] In another preferred embodiment, such as Figure 1 and Figure 2 As shown, the bottom of the base 1 is provided with an anti-slip pad 5, such as a rubber pad or a silicone pad, to prevent the grandstand chair from sliding accidentally after it is installed on the grandstand, thereby ensuring the personal safety of the user.
[0051] In another preferred embodiment, such as Figure 1 and Figure 2 As shown, the outer walls of the two main rods 11 are respectively provided with rotatable U-shaped fasteners 6. After the grandstand chairs are installed on the grandstand, the two U-shaped fasteners 6 are hooked onto the protruding part of the grandstand steps to fix the base 1 to the grandstand. This can fix the grandstand chairs and the grandstand together, and of course, it is also easy to disassemble.
[0052] Example 2
[0053] like Figures 7 to 9 As shown, Embodiment 2 provides a foldable grandstand chair. The structure of Embodiment 2 is generally the same as that of Embodiment 1, except that the grandstand chair in this embodiment also includes armrest assemblies 4 respectively disposed on both sides of the base 1.
[0054] More specifically, such as Figure 7 and Figure 8 As shown, the armrest assembly 4 includes an armrest 41 and a second telescopic rod 42. The rear end of the armrest 41 is rotatably connected to an L-shaped connector 3 on the chair back 2, and the front end of the armrest 41 is rotatably connected to the upper end of the second telescopic rod 42. The lower end of the second telescopic rod 42, away from the armrest 41, is rotatably connected to the main rod 11 of the base 1.
[0055] The second telescopic rod 42 is equipped with a retractable ball and is used to adjust the telescopic length of the second telescopic rod 42 to cooperate with the handrail assembly 4 in switching between unfolding and folding.
[0056] By locking the telescopic end of the second telescopic rod 42 with a pin, the telescopic state of the handrail assembly 4 can be locked. Therefore, the handrail 41 can be selectively raised or lowered to meet different usage needs.
[0057] When the entire grandstand chair is folded down, the armrest assembly 4 can also be folded down as a whole, and together with the base 1 and the backrest 2, they fold down to form a shape like... Figure 9 The folded state shown.
[0058] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A foldable grandstand chair, comprising a base and a backrest rotatably connected to the base, wherein the backrest is foldable, characterized in that: The base includes two main poles that are spaced apart and arranged in a cross configuration, and a folding assembly disposed between the two main poles. The folding assembly is used to move the two main poles closer to or further apart from each other, and to allow the base and the chair back to switch synchronously between folding and unfolding.
2. The foldable grandstand chair according to claim 1, characterized in that: The folding assembly includes two parallel cross tube units and a first telescopic rod disposed between the two cross tube units. The ends of the two cross tube units near the first telescopic rod are rotatably connected to the two ends of the first telescopic rod, and the other ends away from the first telescopic rod are rotatably connected to the corresponding main rods. The first telescopic rod is provided with a latch for locking its extension length so that the two main rods are stably opened when the folding assembly is unfolded. The cross tube unit includes two cross tubes that are hinged to each other, and the lengths of the two cross tubes in the same cross tube unit are different, so that the base is wider at the front and narrower at the back when unfolded.
3. The foldable grandstand chair according to claim 2, characterized in that: Two main rods are each provided with a detachable slide rail frame at one end near the backrest. The slide rail frame has a slide rail. The cross tube unit is movably assembled into the corresponding slide rail at one end near the backrest, and forms a movable rotation support point on the slide rail.
4. The foldable grandstand chair according to claim 3, characterized in that: The extension direction of the groove is parallel to the extension direction of the corresponding main rod, and the length of the groove in its extension direction is less than half the length of the main rod.
5. The foldable grandstand chair according to claim 1, characterized in that: The chair back includes vertical bars rotatably connected to two main bars, a horizontal bar assembly disposed between the two vertical bars, and a connecting rod disposed between the two horizontal bar assemblies; the connecting rod and the two horizontal bar assemblies form an I-shaped backrest structure.
6. The foldable grandstand chair according to claim 5, characterized in that: The crossbar assembly includes two crossbars and a rotating connecting seat disposed between the two crossbars. Each end of the rotating connecting seat is provided with a hinge groove. One end of each crossbar is rotatably connected to the vertical bar, and the other end is rotatably connected to the hinge groove. The two rotating connecting seats are connected by the connecting rod.
7. The foldable grandstand chair according to claim 5, characterized in that: An L-shaped connector is provided between the base and the backrest to allow the vertical rod to rotate relative to the main rod; the L-shaped connector has a stop portion on the side facing the main rod to limit the rotation of the vertical rod, and the outer edge of the stop portion has a flange structure to prevent it from scratching the base.
8. The foldable grandstand chair according to any one of claims 1-7, characterized in that: It also includes armrest assemblies respectively disposed on both sides of the base. The armrest assembly includes an armrest and a second telescopic rod. One end of the armrest is rotatably connected to the backrest, and the other end is rotatably connected to the second telescopic rod. The end of the second telescopic rod opposite to the armrest is rotatably connected to the base.
9. The foldable grandstand chair according to claim 8, characterized in that: The second telescopic rod is equipped with a retractable ball bearing and is used to adjust the telescopic length of the second telescopic rod to cooperate with the handrail assembly in switching between unfolding and folding.
10. The foldable grandstand chair according to any one of claims 1-7, characterized in that: The base is provided with an anti-slip pad at the bottom; and / or, the side wall of the main rod is provided with a rotatable U-shaped fastener for fixing the base to the grandstand.