Foldable stool

Abstract

This utility model provides a foldable stool, relating to the field of portable seating, and solves the technical problem of large bolt shearing forces during opening and closing of foldable stools, leading to damage. The foldable stool includes a webbing, a pivot fastener, and at least two stool leg frames that can pivot to switch between an unfolded and folded state. The two ends of the webbing are detachably fixed to the two stool leg frames. In the area where the stool leg frames pivot and contact each other, a protruding structure with a through hole is provided on the stool leg frame. The protruding structures on different stool leg frames abut against each other, and the pivot fastener passes through the through holes on the two protruding structures, thereby hinged the two stool leg frames. When the two stool leg frames pivot, only the protruding structures contact each other, while a gap is maintained between the main body parts of the stool leg frames. This reduces the contact area during pivoting, greatly reducing the friction area, improving shear resistance, and enhancing durability.

Description

Technical Field

[0001] This utility model relates to the field of portable seating technology, and in particular to a foldable stool. Background Technology

[0002] A folding stool, also known as a folding stool, is a portable small seat, usually made of wood or metal frame with a cloth or leather stretched in the middle to form the seat.

[0003] The existing folding stool includes two stool leg frames, which are hinged together by bolts and fixedly connected by webbing to provide support.

[0004] The applicant has discovered at least the following technical problems with the existing technology: During the folding and unfolding of the stool, the main bodies of the two stool leg frames rub against each other. This large-area friction easily scratches or wears down the coating (such as paint) on the stool leg surface, affecting not only the product's aesthetics but also its service life. Secondly, the pivot fasteners used to connect the two stool leg frames typically use ordinary bolts and nuts. These bolts are prone to fatigue fracture after repeatedly bearing the shear force during the opening and closing of the stool; at the same time, the pivoting motion can also easily cause the nuts to loosen or even fall off, thus posing a safety hazard of structural failure. Utility Model Content

[0005] The purpose of this utility model is to provide a foldable stool to solve the technical problem in the prior art where the bolts are subjected to large shearing forces when opened and stored, and the bolts are easy to fall off, resulting in damage to the foldable stool; the various technical effects of the preferred technical solutions provided by this utility model are described in detail below.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The foldable stool provided by this utility model includes webbing, pivot fasteners, and at least two stool leg frames that can pivot relative to each other to switch between an unfolded state and a folded state, wherein: Both ends of the webbing are detachably fixed to the two stool leg frames respectively; in the area where the stool leg frames pivotally contact each other, the stool leg frames are provided with protruding structures, and the protruding structures are provided with through holes. The protruding structures located on different stool leg frames abut against each other, and the pivot fastener passes through the through holes on the two protruding structures, thereby hinged the two stool leg frames together.

[0007] Preferably, the protruding structure includes a conical platform, with the narrow ends of the conical platforms located on different stool leg frames abutting each other.

[0008] Preferably, the pivot fastener includes a head, a smooth shank adjacent to the head, and a threaded portion away from the head, wherein: The smooth rod portion serves as a pivot axis and passes through the through hole of the stool leg frame. The threaded portion is used to connect with the nut component. The nut component and the head clamp the hinge area of ​​the stool leg frame.

[0009] Preferably, the head, the smooth rod portion, and the threaded portion are integrally formed.

[0010] Preferably, the stool leg frame includes an upper support plate, a lower support plate, and two legs, wherein: The top ends of the two support legs are fixedly connected to the left and right ends of the upper support plate, respectively, and the bottom ends of the two support legs are fixedly connected to the left and right ends of the lower support plate, respectively. The protruding structure is provided on the support legs, and the webbing is fixed to the upper support plate.

[0011] Preferably, the foldable stool further includes a tensioning rod, and the upper support plate is provided with connecting holes, wherein: The connecting hole penetrates the upper and lower surfaces of the upper support plate. The tensioning rod is located below the connecting hole. The fixed end of the webbing passes through the connecting hole and can pass through the connecting hole after wrapping around the tensioning rod at least once.

[0012] Preferably, the connecting holes are arranged at intervals along the length of the upper support plate, the number of connecting holes corresponds one-to-one with the number of webbing, the position of the connecting holes corresponds one-to-one with the end position of the webbing, and all webbing passing through the same upper support plate is wound around the same tensioning rod.

[0013] Preferably, the tightening rod includes a smooth rod, a bent end, and a threaded end, wherein: The bent end and the threaded end are located at opposite ends of the smooth rod, the bent end is an L-shaped structure formed by bending the smooth rod, and the threaded end is threaded with a nut.

[0014] Preferably, the upper support plate has an n-shaped groove, the tensioning rod is located in the n-shaped groove, and the connecting hole communicates with the n-shaped groove.

[0015] Preferably, the webbing is a nylon-like webbing.

[0016] The foldable stool provided by this utility model has the following advantages compared with the prior art: 1. Mutually abutting protrusions are set in the hinge area of ​​the stool leg frame, so that only the protrusions contact each other during pivoting, while the main body of the stool leg frame maintains a gap. The pivot fastener passes through the through holes on the two protrusions to hinge the two stool leg frames, reducing the contact area during pivoting, greatly reducing the friction area, improving shear resistance, effectively preventing the stool leg frame from scratching and paint peeling due to friction, and improving durability.

[0017] 2. By using a pivot fastener with a smooth rod and a threaded part, the pivoting function and the locking function are separated. The smooth rod serves as the pivot axis, increasing the force-bearing area and significantly improving the pivot's shear resistance. The threaded part and the locking part work together to achieve reliable axial locking, fundamentally avoiding the problem of nut loosening caused by pivoting motion, and enhancing the stability of the structure and the safety of use.

[0018] 3. The webbing is secured by a detachable tensioning rod, which is firmly installed on the stool leg frame and is not easily lost. At the same time, its detachable design makes it simple and convenient for users to replace damaged webbing, simplifying the maintenance process and reducing maintenance costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the folding stool; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a structural diagram of the support leg; Figure 4 This is a schematic diagram of the structure of the two conical truncated pyramids fitting together in the stool leg frame; Figure 5 This is a schematic diagram of the pivot fastener. Figure 6 This is a structural diagram of the tensioning rod; Figure 7 This is a schematic diagram of the structure of the upper support plate and the tensioning rod.

[0021] In the diagram: 1. Webbing; 2. Pivot fastener; 21. Head; 22. Smooth rod; 23. Threaded part; 24. Nut; 3. Stool leg frame; 31. Upper support plate; 311. Connecting hole; 32. Lower support plate; 33. Leg; 4. Protruding structure; 41. Through hole; 5. Tensioning rod; 51. Smooth rod; 52. Bent end; 53. Threaded end. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] This utility model provides a foldable stool that improves shear resistance, effectively prevents the stool leg frame from being scratched and the paint from peeling off due to friction, and enhances durability.

[0026] The following is combined with Figures 1-7 The technical solution provided by this utility model will be described in more detail.

[0027] like Figures 1-7As shown, the foldable stool provided by this utility model includes a webbing 1, a pivot fastener 2, and at least two stool leg frames 3 that can pivot to each other to switch between an unfolded state and a folded state. The two ends of the webbing 1 are detachably fixed to the two stool leg frames 3. In the area where the stool leg frames 3 pivot to each other, a protruding structure 4 is provided on the stool leg frame 3. The protruding structure 4 is provided with a through hole 41. The protruding structures 4 located on different stool leg frames 3 abut against each other. The pivot fastener 2 passes through the through hole 41 on the two protruding structures 4, thereby hinged the two stool leg frames 3.

[0028] Specifically, the stool leg frame 3 in this embodiment can be made of high-strength metal plates, such as steel pipes or aluminum alloy pipes. Through bending and welding processes, the metal pipes can be processed into a roughly U-shaped structure. Each stool leg frame 3 includes an upper support plate 31, a lower support plate 32, and two legs 33, wherein: the top ends of the two legs 33 are fixedly connected to the left and right ends of the upper support plate 31, respectively; the bottom ends of the two legs 33 are fixedly connected to the left and right ends of the lower support plate 32, respectively; a protruding structure 4 is provided on the legs 33; and a webbing 1 is fixed to the upper support plate 31.

[0029] In this embodiment of the foldable stool, protruding structures 4 that abut against each other are provided in the hinge area of ​​the stool leg frame 3, so that only the protruding structures 4 contact each other when pivoting, while the main body parts of the stool leg frame 3 maintain a gap. The pivot fastener 2 passes through the through hole 41 on the two protruding structures 4 to hinge the two stool leg frames 3, thereby reducing the contact surface when pivoting, greatly reducing the friction area, improving the shear resistance, effectively preventing the stool leg frame 3 from being scratched and having paint chipped due to friction, and improving durability.

[0030] As an optional implementation, the protrusion structure 4 includes a conical platform, with the narrow ends of the conical platforms located on different stool leg frames 3 abutting each other.

[0031] See Figure 3 and Figure 4 As shown, the protruding structure 4 is a conical platform that is integrally formed on the support leg 33 of the stool leg frame 3 by a stamping process.

[0032] See Figure 1 and Figure 4 As shown, during the unfolding or folding of the stool, the two stool leg frames 3 rotate relative to each other around the pivot fastener 2. During this process, due to the presence of the protruding structures 4, only the end faces of the two protruding structures 4 located on different stool leg frames 3 will abut and slide in contact. Because the conical platform has a certain height, the main body of the frame on the two stool leg frames 3, excluding the protruding structures 4, maintains a preset gap throughout the entire pivoting process. Figure 4 As shown, the gap is clearly visible.

[0033] In this embodiment, the large-area surface contact friction in the traditional structure is transformed into small-area local contact friction occurring at specific locations, which reduces the friction area and friction force. This effectively prevents the coating (such as paint) on the surface of the stool leg frame 3 from being scratched, worn, or peeled off due to mutual friction, thereby improving the product's appearance durability and longevity.

[0034] As an optional implementation, see Figure 1 , Figure 4 and Figure 5 The pivot fastener 2 includes a head 21, a smooth rod portion 22 adjacent to the head 21, and a threaded portion 23 away from the head 21. The smooth rod portion 22 is inserted into the through hole 41 of the stool leg frame 3 as a pivot axis. The threaded portion 23 is used to be threadedly connected to the nut 24. The nut 24 and the head 21 clamp the hinge area of ​​the stool leg frame 3.

[0035] During assembly, the smooth rod portion 22 passes sequentially through the through holes 41 of the protruding structures 4 on the two stool leg frames 3, while the threaded portion 23 protrudes from one of the protruding structures 4 on the stool leg frame 3 and is threadedly connected to a locking component (a nut 24 in this embodiment). To further improve the anti-loosening performance, the nut 24 can preferably be an anti-loosening nut with a nylon locking ring.

[0036] As an optional implementation, the head 21, the smooth rod portion 22, and the threaded portion 23 are integrally molded structures.

[0037] In this embodiment, the smooth rod portion 22 serves as the pivot axis, and its smooth cylindrical surface provides a low-friction, stable bearing surface for the relative rotation of the two stool leg frames 3. Due to the large diameter of the smooth rod portion 22, its cross-sectional area is also correspondingly large, thus possessing high shear strength. This effectively resists the shear forces generated when the stool is under load and during opening and closing, avoiding the risk of pivot breakage. The axial locking function is achieved by the threaded portion 23 and the nut 24. Tightening the nut 24 applies a constant axial clamping force to the two stool leg frames 3, tightly pressing the end faces of the two protruding structures 4 together. Since the rotation of the stool leg frames 3 occurs around the smooth rod portion 22, rotational friction occurs between the end faces of the protruding structures 4 and is not transmitted to the threaded portion 23 and the nut. The opening and closing of the stool reduces the torque that could cause the nut 24 to loosen, preventing the pivot from loosening and falling off, thus ensuring the long-term stability and safety of the structure.

[0038] As an optional implementation, see Figure 2 , Figure 6 and Figure 7As shown, the foldable stool also includes a tension rod 5, and the upper support plate 31 is provided with a connecting hole 311, wherein: the connecting hole 311 penetrates the upper surface and the lower surface of the upper support plate 31, the tension rod 5 is located below the connecting hole 311, the fixed end of the webbing 1 passes through the connecting hole 311, and can pass through the connecting hole 311 after wrapping around the tension rod 5 at least once.

[0039] See Figure 2 and Figure 7 As shown, when installing the webbing 1, one end of the webbing 1 passes through the connecting hole 311, wraps around the tensioning rod 5 at least once, and then exits through the connecting hole 311; or, the tensioning rod 5 passes through the loop portion at all ends of the webbing 1.

[0040] As an optional implementation, see Figure 1 and Figure 7 As shown, the connecting holes 311 are arranged at intervals along the length of the upper support plate 31. The number of connecting holes 311 corresponds to the number of webbing 1, and the position of the connecting holes 311 corresponds to the end position of the webbing 1. All webbing 1 passing through the same upper support plate 31 are wrapped around the same tensioning rod 5.

[0041] In the above-described structure of this embodiment, the friction between the webbing 1 and the tensioning rod 5 and the connecting hole 311 of the upper support plate 31 is used to fasten the webbing 1. When the foldable stool is opened, the webbing 1 will be fixed more tightly and will not easily come loose.

[0042] When it is necessary to adjust the tightness of the webbing 1, simply pull the webbing 1 wrapped around the tensioning rod 5 manually to adjust the tightness of the webbing 1 between the two upper support plates 31, thereby adjusting the support height of the foldable stool, which is convenient to use.

[0043] As an optional implementation, see Figure 5 As shown, the tightening rod 5 includes a smooth rod 51, a bent end 52, and a threaded end 53. The bent end 52 and the threaded end 53 are located at opposite ends of the smooth rod 51. The bent end 52 is an L-shaped structure formed by bending the smooth rod 51. A nut is threaded onto the threaded end 53.

[0044] In this embodiment, the tensioning rod 5, through the structure of the bent end 52 and the threaded end 53, can prevent the tensioning rod 5 from detaching from the webbing 1, thereby improving the stability of the structure.

[0045] As an optional implementation, the upper support plate 31 has an n-shaped groove, the clamping rod 5 is located in the n-shaped groove, and the connecting hole 311 communicates with the n-shaped groove.

[0046] The above structure facilitates the installation of the tension rod 5, prevents the tension rod 5 from interfering with external equipment, and ensures the normal and stable opening and closing of the stool leg frame 3.

[0047] In this embodiment, the webbing 1 is a nylon-like webbing 1. The nylon-like webbing 1 is not easy to break, does not age easily, has high strength, and improves the overall service life.

[0048] The specific features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more embodiments or examples.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A foldable stool, characterized by Includes webbing, pivot fasteners, and at least two stool leg frames that can pivot relative to each other to switch between an unfolded and folded state, wherein: Both ends of the webbing are detachably fixed to the two stool leg frames respectively; in the area where the stool leg frames pivotally contact each other, the stool leg frames are provided with protruding structures, and the protruding structures are provided with through holes. The protruding structures located on different stool leg frames abut against each other, and the pivot fastener passes through the through holes on the two protruding structures, thereby hinged the two stool leg frames together.

2. The foldable stool of claim 1, wherein, The protruding structure includes a conical platform, with the narrow ends of the conical platforms located on different stool leg frames abutting each other.

3. The foldable stool of claim 1, wherein, The pivot fastener includes a head, a smooth shank adjacent to the head, and a threaded portion away from the head, wherein: The smooth rod portion serves as a pivot axis and passes through the through hole of the stool leg frame. The threaded portion is used to connect with the nut component. The nut component and the head clamp the hinge area of ​​the stool leg frame.

4. The foldable stool of claim 3, wherein, The head, the smooth rod, and the threaded part are integrally molded structures.

5. The foldable table of claim 1, wherein, The stool leg frame includes an upper support plate, a lower support plate, and two legs, wherein: The top ends of the two support legs are fixedly connected to the left and right ends of the upper support plate, respectively, and the bottom ends of the two support legs are fixedly connected to the left and right ends of the lower support plate, respectively. The protruding structure is provided on the support legs, and the webbing is fixed to the upper support plate.

6. The foldable stool of claim 5, wherein, The foldable stool also includes a tensioning rod, and the upper support plate is provided with connecting holes, wherein: The connecting hole penetrates the upper and lower surfaces of the upper support plate. The tensioning rod is located below the connecting hole. The fixed end of the webbing passes through the connecting hole and can pass through the connecting hole after wrapping around the tensioning rod at least once.

7. The foldable stool of claim 6, wherein, The connecting holes are arranged at intervals along the length of the upper support plate. The number of connecting holes corresponds one-to-one with the number of webbing. The position of the connecting holes corresponds one-to-one with the end position of the webbing. All webbing passing through the same upper support plate is wrapped around the same tensioning rod.

8. The foldable table of claim 6, wherein, The tightening rod includes a smooth rod, a bent end, and a threaded end, wherein: The bent end and the threaded end are located at opposite ends of the smooth rod, the bent end is an L-shaped structure formed by bending the smooth rod, and the threaded end is threaded with a nut.

9. The foldable table of claim 6, wherein, The upper support plate has an n-shaped groove, the tensioning rod is located in the n-shaped groove, and the connecting hole communicates with the n-shaped groove.

10. The foldable table of claim 1, wherein, The webbing is made of imitation nylon.

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