Flip chair

Abstract

This invention discloses a flip-up chair, comprising a chair body, a seat cushion, and a flipping assembly. The seat cushion is flip-up and mounted on the chair body, and has a rotation axis. The flipping assembly includes a first connecting part, a second connecting part, and an elastic restoring member. One of the first connecting part and the second connecting part is connected to the chair body, and the other is connected to the seat cushion. The second connecting part has multiple connecting structures arranged circumferentially around the rotation axis. The elastic restoring member is fitted onto the rotation axis, with one end connected to the first connecting part and the other end connected to one of the connecting structures. This invention allows adjustment of the elastic restoring force provided by the elastic restoring member, ensuring a suitable elastic restoring force. This not only makes it easy to flip the seat cushion down but also keeps the seat cushion in a near-vertical state when not in use, making it more convenient for the user.

Description

Technical Field

[0001] This invention relates to the field of furniture technology, and in particular to a flip chair. Background Technology

[0002] Some chairs feature upturnable seat cushions to reduce space occupation when not in use. In related technologies, a torsion spring or other elastic restoring element is installed between the seat cushion and the chair body. The elastic restoring force provided by this element gives the seat cushion a tendency to flip up, making it easier to flip and improving the user experience. Furthermore, it helps maintain the seat cushion in a near-vertical position when flipped up. However, during use, it has been found that the elastic restoring force provided by the element can be too large or too small, leading to difficulty in flipping the seat cushion down or preventing it from maintaining a near-vertical position, causing inconvenience for the user. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a flip chair that can adjust the elastic restoring force provided by the elastic reset member, making it more convenient for users.

[0004] According to a first aspect of the present invention, a folding chair includes a chair body, a seat cushion, and a folding assembly. The seat cushion is foldably disposed on the chair body and has a rotation axis. The folding assembly includes a first connecting portion, a second connecting portion, and an elastic reset member. One of the first connecting portion and the second connecting portion is connected to the chair body, and the other is connected to the seat cushion. The second connecting portion has a plurality of connecting structures arranged circumferentially around the rotation axis. The elastic reset member is sleeved on the rotation axis. One end of the elastic reset member is connected to the first connecting portion, and the other end of the elastic reset member is connected to one of the connecting structures.

[0005] The folding chair according to embodiments of the present invention has at least the following beneficial effects:

[0006] The folding chair of this invention features an elastic restoring force provided by an elastic reset member, which causes the seat cushion to tend to flip upwards. This not only makes flipping the seat cushion easier but also allows it to maintain its position when it is flipped to a near-vertical state, preventing sudden descent. The second connecting part has multiple connecting structures around the rotation axis of the seat cushion. By connecting the elastic reset member to different connecting structures, the elastic restoring force provided by the elastic reset member can be adjusted to a suitable magnitude. This not only makes it easy to flip the seat cushion downwards but also allows it to remain in a near-vertical state when not in use, making it more convenient for the user.

[0007] According to some embodiments of the present invention, the flipping assembly further includes a mounting shaft disposed on the chair body, the axis of the mounting shaft coincides with the rotation axis, the elastic reset member is sleeved on the mounting shaft, the first connecting portion is connected to the seat cushion and rotatably sleeved on the mounting shaft, and the second connecting portion is connected to the mounting shaft and fixed relative to the mounting shaft in the circumferential direction.

[0008] According to some embodiments of the present invention, the seat cushion can be flipped upward to a first set position. The first connecting portion is provided with a first protrusion. The flipping assembly further includes a fixing portion provided on the chair body. The fixing portion is provided with a second protrusion. When the seat cushion is flipped upward to the first set position, the first protrusion abuts against the second protrusion to restrict the seat cushion from continuing to flip.

[0009] According to some embodiments of the present invention, the fixing part is rotatably mounted on the chair body, and a fastener for limiting the rotation of the fixing part is provided between the fixing part and the chair body. The mounting shaft is connected to the fixing part. The first protrusion is provided on the side of the first connecting part away from the elastic reset member. The first protrusion is used to abut against the side of the second protrusion to define a stop surface. The side of the first protrusion away from the stop surface is set as an inclined surface so that when the fixing part is rotated, the second protrusion can pass through the first protrusion from the side of the first protrusion away from the stop surface.

[0010] According to some embodiments of the present invention, the connection structure includes a socket provided on the second connection portion, and the end of the elastic reset member away from the first connection portion is inserted into the socket.

[0011] According to some embodiments of the present invention, the first connecting part, the second connecting part, and the elastic reset member are each provided in twos, the two second connecting parts are respectively located on the side of the two elastic reset members facing each other, the mounting shaft is sleeved with at least one friction piece between the two second connecting parts, and at least one of the friction pieces is connected to the seat cushion.

[0012] According to some embodiments of the present invention, at least one side of the mounting shaft is provided with a first limiting surface along the axial direction of the mounting shaft, the second connecting part is sleeved on the mounting shaft, the inner sidewall of the second connecting part is provided with a corresponding second limiting surface, the second limiting surface cooperates with the first limiting surface to prevent the second connecting part from rotating relative to the mounting shaft, the seat cushion is provided with a receiving hole for sleeved on the mounting shaft, the first connecting part, the second connecting part, the elastic reset member and the friction plate are all located in the receiving hole, the hole wall of the receiving hole is provided with a slot extending along the axial direction of the receiving hole and penetrating at least one end, the first connecting part and at least one of the friction plates are provided with a locking block, the locking block is engaged in the slot.

[0013] According to some embodiments of the present invention, the mounting shaft threaded connection has two adjusting nuts, and the two adjusting nuts respectively abut against the opposite sides of the two second connecting portions.

[0014] According to some embodiments of the present invention, the folding chair further includes a backrest slidably disposed on the chair body, the backrest being slidable upward relative to the chair body to allow the backrest to be detached from the chair body.

[0015] According to some embodiments of the present invention, the seat cushion can be flipped downwards to a second predetermined position, and the seat cushion is provided with an abutting portion, which abuts against the chair body when the seat cushion is flipped downwards to the second predetermined position; or, the chair body is provided with a supporting portion, which supports the seat cushion when the seat cushion is flipped downwards to the second predetermined position, thereby restricting the seat cushion from continuing to rotate.

[0016] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the overall structure of the flip chair according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure after the backrest is separated from the chair body;

[0020] Figure 3 for Figure 1 An explosion diagram;

[0021] Figure 4 for Figure 3 A schematic diagram of the structure of the inverting component;

[0022] Figure 5 for Figure 3 Exploded view of the inverting component;

[0023] Figure 6 for Figure 5 Schematic diagram of the structure of the first connecting part and the fixing part;

[0024] Figure 7 This is a schematic diagram showing the location of the contact part.

[0025] Icon labels:

[0026] Chair body 100; backrest 110; backrest fastener 111; backrest body 112; second mounting groove 113; mounting plate 120; fixing bracket 130; fixing plate 131; mounting hole 132; mounting ring 133; decorative end cap 134; first mounting groove 135;

[0027] Seat cushion 200; storage hole 210; card slot 211; abutment part 220; seat cushion fixing part 230; seat cushion body 240; mounting sleeve 250;

[0028] Flip assembly 300; first connecting part 310; first protrusion 311; stop surface 312; inclined surface 313; second connecting part 320; connecting structure 321; second limiting surface 322; elastic reset member 330; mounting shaft 340; first limiting surface 341; fixing part 350; second protrusion 351; third limiting surface 352; hexagonal hole 353; friction plate 360; adjusting nut 370. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, inside, outside, top, bottom, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0031] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0032] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0033] With the advancement of technology, home furnishing products have developed rapidly, and the types of chairs have also increased. Shower chairs are one such type. However, most existing shower chairs do not have a seat cushion that can be flipped up, which takes up a lot of space when not in use and is not very practical.

[0034] In related technologies, some shower chairs feature a flip-up seat cushion to reduce space occupation when not in use. Specifically, a torsion spring or other elastic restoring element is installed between the seat cushion and the chair body. The elastic restoring force provided by this element gives the seat cushion a tendency to flip up, making it easier to flip up and improving the user experience. Furthermore, when the seat cushion is flipped up to a near-vertical position, it can be held in that position. However, during use, it has been found that the elastic restoring force provided by the element can be either too large or too small. Excessive force makes it difficult to flip the seat down, while insufficient force prevents the seat cushion from remaining in a near-vertical position, causing inconvenience for the user.

[0035] The following is for reference. Figures 1 to 7 A flip chair according to an embodiment of the present invention is described.

[0036] like Figures 1 to 5 As shown, a flip chair according to a first aspect embodiment of the present invention includes a chair body 100, a seat cushion 200, and a flip assembly 300.

[0037] The seat cushion 200 is flip-mounted on the chair body 100. The seat cushion 200 has a rotation axis. The flip-mounting assembly 300 includes a first connecting part 310, a second connecting part 320, and an elastic reset member 330. One of the first connecting part 310 and the second connecting part 320 is connected to the chair body 100, and the other is connected to the seat cushion 200. The second connecting part 320 is provided with a plurality of connecting structures 321 arranged circumferentially around the rotation axis of the seat cushion 200. The elastic reset member 330 is sleeved on the rotation axis of the seat cushion 200. One end of the elastic reset member 330 is connected to the first connecting part 310, and the other end of the elastic reset member 330 is connected to one of the connecting structures 321.

[0038] For example, such as Figures 1 to 5As shown, the chair body 100 may include a backrest 110, a mounting plate 120, and a fixing frame 130. The mounting plate 120 can be installed on the wall using fasteners such as expansion screws. The fixing frame 130 has a vertically mounted fixing plate 131. The end face of the fixing plate 131 near the mounting plate 120 has a first mounting groove 135 that extends through both sides. The mounting plate 120 is snapped into the first mounting groove 135 and can be pulled out from both sides of the first mounting groove 135. The bottom of the fixing plate 131 has a vertically mounted fastening screw and is connected to the mounting plate 120 through the fastening screw. This makes it easier to assemble and disassemble the chair body 100, and the fastening screw is not easily exposed, making the overall folding chair more aesthetically pleasing. The backrest 110 may include a backrest fixing member 111 disposed on the fixing frame 130 and a backrest body 112 disposed on the backrest fixing member 111. The seat cushion 200 may include a seat cushion fixing member 230 disposed on the fixing frame 130 and a seat cushion body 240 disposed on the seat cushion fixing member 230. The first connecting part 310 may connect to the seat cushion fixing member 230 of the seat cushion 200, and the second connecting part 320 may connect to the fixing frame 130 of the chair body 100. When the seat cushion 200 is in a near-horizontal state or in a state of tilting upward away from its own axis of rotation, the elastic reset member 330 can be twisted to generate an elastic restoring force. The elastic restoring force can make the seat cushion 200 tend to flip upward. When the seat cushion 200 is not subjected to other external forces, the seat cushion 200 can flip upward to a near-vertical state under the action of the elastic restoring force of the elastic reset member 330.

[0039] In the flip chair of this invention, the elastic restoring force provided by the elastic reset member 330 makes the seat cushion 200 tend to flip up. This not only makes it easier for the seat cushion 200 to flip up, but also keeps the seat cushion 200 in a near-vertical state when it flips up, preventing it from suddenly falling down. In addition, it can also prevent the seat cushion 200 from falling down when it flips down. According to an embodiment of the present invention, the second connecting part 320 is provided with a plurality of connecting structures 321 around the rotation axis of the seat cushion 200. The end of the elastic reset member 330 away from the first connecting part 310 is connected to one of the connecting structures 321. When the end of the elastic reset member 330 away from the first connecting part 310 is connected to other connecting structures 321, the degree of torsion of the elastic reset member 330 can be adjusted, thereby adjusting the elastic restoring force provided by the elastic reset member 330, so that the elastic restoring force provided by the elastic reset member 330 is appropriate. This not only makes it easy for the seat cushion 200 to fold down, but also keeps the seat cushion 200 in a near-vertical state when not in use, making it more convenient for the user.

[0040] It should be noted that, firstly, the chair body 100 can also be of other structures. For example, it can be equipped with support legs that support it on the ground. The fixing frame 130 and the mounting plate 120 can be welded or integrally formed. Alternatively, the backrest 110 can be omitted, and the mounting plate 120 can be installed on a wall, allowing the user's back to rest against the wall. Secondly, the first connecting part 310 can connect to the chair body 100, and the second connecting part 320 can connect to the seat cushion 200. Furthermore, the backrest 110 can also be of other structures, such as an integrally formed structure, and the seat cushion 200 can also be of other structures, such as an integrally formed structure. Additionally, multiple connecting structures 321 can be evenly arranged circumferentially around the rotation axis of the seat cushion 200. The number can be determined according to the actual situation. Evenly arranged connecting structures 321 result in more uniform adjustment of the elastic restoring force. Of course, the multiple connecting structures 321 do not have to be evenly arranged. The elastic restoring element 330 can be of various types, such as a torsion spring, a regular spring, or a clockwork mechanism, as long as it can generate different elastic restoring forces when connected to different connecting structures 321. There are several types of connecting structures 321. For example, the connecting structure 321 can be an insertion hole provided on the second connecting part 320, with one end of the elastic reset member 330 directly inserted into the insertion hole, making installation more convenient. The connecting structure 321 can also be a threaded hole provided on the second connecting part 320, with one end of the elastic reset member 330 having a mounting head, which is connected to the threaded hole by a bolt. The connecting structure 321 can also be a screw provided on the second connecting part 320, with one end of the elastic reset member 330 having a mounting head, which has a through hole through which the screw is fitted, and then locked in place by a nut.

[0041] In a further embodiment of the present invention, such as Figure 5As shown, the flipping assembly 300 also includes a mounting shaft 340 disposed on the chair body 100. The axis of the mounting shaft 340 coincides with the rotation axis of the seat cushion 200. An elastic restoring member 330 is sleeved on the mounting shaft 340. A first connecting part 310 is connected to the seat cushion 200 and has a through hole, through which it is rotatably sleeved on the mounting shaft 340. A second connecting part 320 is connected to the mounting shaft 340 and is fixed relative to the mounting shaft 340 in the circumferential direction. When the seat cushion 200 flips downward, it can drive the first connecting part 310 to rotate relative to the mounting shaft 340, while the second connecting part 320 is connected to the mounting shaft 340, thereby enabling the first connecting part 310 and the second connecting part 320 to rotate relative to each other, thereby causing the elastic restoring member 330 to twist and generate an elastic restoring force. The mounting shaft 340 is provided to prevent large deformation of the elastic reset member 330 when it is twisted. Furthermore, the first connecting part 310 is sleeved on the mounting shaft 340 and the second connecting part 320 is connected to the mounting shaft 340, thereby enabling the first connecting part 310, the elastic reset member 330 and the second connecting part 320 to cooperate more precisely, thus improving the effect of adjusting the elastic restoring force of the elastic reset member 330.

[0042] It is understandable that the first connecting part 310 can be connected to the mounting shaft 340 and fixed relative to the mounting shaft 340 in the circumferential direction, and the second connecting part 320 can be connected to the seat cushion 200 and rotatably sleeved on the mounting shaft 340.

[0043] Furthermore, such as Figures 4 to 6 As shown, the seat cushion 200 can be flipped upwards to a first set position. The first connecting part 310 is provided with a first protrusion 311. The flipping assembly 300 also includes a fixing part 350 provided on the chair body 100. The fixing part 350 is provided with a second protrusion 351. When the seat cushion 200 is flipped upwards to the first set position, the first protrusion 311 abuts against the second protrusion 351 to limit the seat cushion 200 from continuing to flip. The first set position is the position where the seat cushion 200 is flipped upwards to a vertical or near-vertical state. When the seat cushion 200 is flipped upwards, the first protrusion 311 moves accordingly. When the seat cushion 200 is flipped upwards to the first set position, the front side of the first protrusion 311 abuts against the second protrusion 351 in the direction of movement. The cooperation between the first protrusion 311 and the second protrusion 351 can limit the seat cushion 200 from continuing to flip, thereby preventing the seat cushion 200 from colliding with the backrest 110 or the wall. It should be noted that the first protrusion 311 can be located on the side of the fixing part 350 away from the elastic reset member 330, on the side close to the elastic reset member 330, or in other positions.

[0044] Furthermore, such as Figures 4 to 6As shown, the fixing part 350 is rotatably mounted on the chair body 100. A fastener is provided between the fixing part 350 and the chair body 100. The fastener is used to restrict the rotation of the fixing part 350. The mounting shaft 340 and the fixing part 350 can be coaxially connected. The first protrusion 311 is provided on the side of the first connecting part 310 away from the elastic reset member 330. The first protrusion 311 is used to abut against the side of the second protrusion 351 to define a stop surface 312. The side of the first protrusion 311 away from the stop surface 312 is set as an inclined surface 313 so that when the fixing part 350 is rotated, the second protrusion 351 can pass through the first protrusion 311 from the side of the first protrusion 311 away from the stop surface 312.

[0045] Specifically, the outer wall of the fixing part 350 is generally cylindrical, and the chair body 100 is provided with a mounting hole 132. The axis of the mounting hole 132 can coincide with the rotation axis of the seat cushion 200. When installing the flip assembly 300, the fixing part 350 is fitted into the mounting hole 132, the seat cushion 200 is rotated upwards to the first set position and kept stationary, and then the fixing part 350 is rotated. The fixing part 350 drives the second connecting part 320 to rotate through the mounting shaft 340. When the fixing part 350 continues to rotate, causing the second protrusion 351 to abut against the inclined surface 313 of the first protrusion 311, since the inclined surface 313 is inclined and the elastic reset member 330 on the other side of the first connecting part 310 can extend and retract, the first connecting part 310 can be subjected to the second The protrusion 351 applies a squeezing force and slides along the axial direction of the mounting shaft 340, thereby facilitating the second protrusion 351 to pass through the first protrusion 311 and make the stop surface 312 of the first protrusion 311 abut against the second protrusion 351. During this process, since the first connecting part 310 is connected to the seat cushion 200, it also remains stationary, thereby allowing the elastic reset member 330 to twist and generate an initial elastic restoring force. This initial elastic restoring force can keep the seat cushion 200 in a near-vertical state. Then, the fixing part 350 is fixed to the chair body 100 by fasteners. The structure is simple and the operation is convenient.

[0046] Furthermore, such as Figure 6 As shown, the first connecting part 310 has two or three first protrusions 311 evenly arranged circumferentially on the side opposite to the elastic restoring member 330, and the fixing part 350 has two or three corresponding second protrusions 351. This allows the fixing part 350 to rotate at different angles, thereby generating different initial elastic restoring forces according to actual conditions. Furthermore, after prolonged use, when the elastic effect of the elastic restoring member 330 decreases, resulting in a decrease in the initial elastic restoring force, the fasteners can be removed, and the fixing part 350 can be rotated again to adjust the initial elastic restoring force, ensuring that the seat cushion 200 remains in a nearly vertical position. It should be noted that only two or three first protrusions 311 and second protrusions 351 are provided to facilitate the seat cushion 200's ability to rotate 90 degrees.

[0047] In some embodiments of the present invention, such as Figure 4 and Figure 5 As shown, each of the first connecting portion 310, the second connecting portion 320, and the elastic restoring member 330 is provided in twos. The two second connecting portions 320 are respectively located on the side where the two elastic restoring members 330 face each other, and the two first connecting portions 310 are respectively located on the side where the two elastic restoring members 330 face away from each other. At least one friction piece 360 ​​is sleeved between the two second connecting portions 320 on the mounting shaft 340, and at least one friction piece 360 ​​is connected to the seat cushion 200. The provision of two elastic restoring members 330 makes the elastic restoring force applied to the seat cushion 200 more uniform, resulting in a better upward tilting effect for the seat cushion 200. In addition, friction plates 360 are provided. Taking multiple friction plates 360 as an example, the friction plates 360 are squeezed by two second connecting parts 320, and the two adjacent friction plates 360 are in contact. At least one friction plate 360 ​​is connected to the seat cushion 200. When the seat cushion 200 is flipped, at least one friction plate 360 ​​rotates with it, thereby creating frictional damping between the two adjacent friction plates 360 and between the second connecting part 320 and the adjacent friction plate 360. This can further improve the experience when the seat cushion 200 is flipped, in conjunction with the elastic reset member 330. Moreover, when the seat cushion 200 is flipped to a near-vertical state, it can further keep the seat cushion 200 in that state.

[0048] It should be noted that there can be only one friction plate 360. The friction plate 360 ​​is provided with a through hole and the mounting shaft 340 is rotatably sleeved through the through hole. In addition, there can also be two fixing parts 350. The two fixing parts 350 can connect the two ends of the mounting shaft 340 to make the mounting shaft 340 more securely installed, and at the same time prevent the first connecting part 310 from sliding out from both ends of the mounting shaft 340.

[0049] In a further embodiment of the present invention, such as Figure 5As shown, at least one side of the mounting shaft 340 is provided with a first limiting surface 341 along the axial direction of the mounting shaft 340. The second connecting part 320 is sleeved on the mounting shaft 340. The inner sidewall of the second connecting part 320 is provided with a second limiting surface 322. The second limiting surface 322 cooperates with the first limiting surface 341 to prevent the second connecting part 320 from rotating relative to the mounting shaft 340. The seat cushion 200 is provided with a receiving hole 210 for sleeved mounting shaft 340. The first connecting part 310, the second connecting part 320, the elastic reset member 330 and the friction plate 360 ​​are all located in the receiving hole 210. The hole wall of the receiving hole 210 is provided with a groove 211 extending along the axial direction of the receiving hole 210 and penetrating at least one end. The first connecting part 310 and at least one friction plate 360 ​​are provided with a locking block, which is engaged in the groove 211. Specifically, the outer side wall of the first connecting part 310, the outer side wall of the second connecting part 320, and the outer side wall of the friction plate 360 ​​connecting the cushion 200 can all be cylindrical. Thus, the flipping assembly 300 can form a cylindrical structure. The cushion 200 rotates and fits the flipping assembly 300 through the storage hole 210, thereby indirectly rotating and connecting to the chair body 100. The locking block can be pulled out from one end of the slot 211. When it is necessary to disassemble the cushion 200 and the flipping assembly 300, the fasteners between the fixing part 350 and the chair body 100 are removed, and then the flipping assembly 300 is pulled out from one end of the storage hole 210. After that, the cushion 200 can be removed. The operation is convenient, time-saving and labor-saving.

[0050] It should be noted that one or more first limiting surfaces 341 can be provided. For example, a first limiting surface 341 can be provided on both opposite sides of the mounting shaft 340. The second connecting part 320 has a through hole and the mounting shaft 340 is fitted through the through hole. The second limiting surface 322 is provided on the inner sidewall of the through hole. The first connecting part 310 and at least one friction piece 360 ​​can also be connected to the seat cushion 200 in other ways, for example, they can be connected to the seat cushion 200 by bolts. The second connecting part 320 can also be fixed to the mounting shaft 340 in the circumferential direction in other ways, for example, a locking bolt is provided between the second connecting part 320 and the mounting shaft 340. The seat cushion 200 can also be directly rotatably connected to the chair body 100 instead of being fitted with the flip assembly 300, as long as it can connect the first connecting part 310 and at least one friction piece 360.

[0051] When two fixing parts 350 are provided, the fixing frame 130 of the chair body 100 can be provided with two mounting rings 133 side by side. The mounting holes 132 for mounting the fixing parts 350 are provided on the mounting rings 133. The first connecting part 310, the second connecting part 320, the elastic reset member 330 and the friction plate 360 ​​are located between the two mounting rings 133 to facilitate the seat cushion 200 to be fitted. A decorative end cap 134 can be provided on the side of the two mounting rings 133 that are opposite to each other. The fixing part 350 can be provided with a mating hole for the mounting shaft 340 to be inserted on the side near the mounting shaft 340. The hole wall of the mating hole is provided with a third limiting surface 352 that mates with the first limiting surface 341. The third limiting surface 352 mates with the first limiting surface 341 to prevent the fixing part 350 from rotating relative to the mounting shaft 340. In addition, the fixing part 350 and the mounting shaft 340 are also provided with screws, so that the fixing part 350 and the mounting shaft 340 are connected and can rotate together. Of course, the fixing part 350 and the mounting shaft 340 can also be directly connected by screws. The fixing part 350 can be provided with a hexagonal hole 353 on the side away from the mounting shaft 340, so that the operator can rotate the fixing part 350 with an Allen wrench.

[0052] Furthermore, such as Figure 5 As shown, the outer wall of the mounting shaft 340, beyond the first limiting surface 341, is provided with connecting threads. Two adjusting nuts 370 are threadedly connected to the mounting shaft 340 via these threads. The two adjusting nuts 370 abut against opposite sides of the two second connecting parts 320. Rotating the adjusting nuts 370 adjusts the pressure of the two second connecting parts 320 on the friction plates 360, thereby allowing adjustment of the frictional damping between adjacent friction plates 360 and between the second connecting parts 320 and adjacent friction plates 360 as needed, improving practicality. Furthermore, the mounting shaft 340's first limiting surface 341 and connecting threads not only ensure circumferential fixation between the second connecting parts 320 and the mounting shaft 340 but also allow for the installation of the adjusting nuts 370, demonstrating ingenious design.

[0053] In some embodiments of the present invention, such as Figures 1 to 3As shown, the folding chair also includes a backrest 110, which is slidably mounted on the chair body 100. The backrest 110 can slide upward relative to the chair body 100, and can be detached from the chair body 100 during the upward sliding process. For example, the back of the backrest 110 can have a second mounting groove 113 extending through its bottom end. The overall structure formed by the mounting plate 120 and the fixing plate 131 interlocking can be fitted into the second mounting groove 113. Through the gravity of the backrest 110 itself, it can prevent the backrest 110 from moving upward at will, thus realizing the installation of the backrest 110. When it is necessary to remove the backrest 110, it can be slid upward and pulled out. The operation is simple and convenient. It should be noted that the backrest 110 can also be slidably mounted on the chair body 100 in other ways. For example, a guide rail can be vertically set on the chair body 100, and the backrest 110 can be correspondingly provided with a slider and slidably mounted on the guide rail through the slider.

[0054] In some embodiments of the present invention, such as Figure 5 and Figure 7 As shown, the seat cushion 200 can slide downwards to a second set position. The seat cushion 200 has an abutment portion 220, which abuts against the chair body 100 when the seat cushion 200 is flipped downwards to the second set position. For example, the seat cushion 200 also includes a mounting cylinder 250, and a seat cushion fixing member 230 is provided on the outer side wall of the mounting cylinder 250. The mounting cylinder 250 has a storage hole 210, through which the flipping component 300 is rotatably mounted. The abutment portion 220 can be an arc-shaped protrusion provided on the side of the outer side wall of the mounting cylinder 250 away from the seat cushion fixing member 230. The fixing frame 130 of the chair body 100 is provided with a corresponding arc-shaped concave surface. When the seat cushion 200 is flipped downwards to the second set position, that is, a position close to a horizontal state, the arc-shaped protrusion abuts against the arc-shaped concave surface. The cooperation between the arc-shaped protrusion and the arc-shaped concave surface can prevent the seat cushion 200 from continuing to rotate. Alternatively, the chair body 100 can be equipped with a support portion. When the seat cushion 200 is flipped downwards to the second predetermined position, which is a near-horizontal position, the support portion supports the seat cushion 200, thus limiting the seat cushion 200 from continuing to rotate. It is understood that the abutment portion 220 can also be other structures. For example, it can be a block-shaped structure provided on the outer wall of the mounting cylinder 250 away from the seat cushion fixing member 230. When the seat cushion 200 is flipped downwards to the second predetermined position, the top surface of the abutment portion 220 abuts against the bottom surface of the fixing frame 130 of the chair body 100, thus limiting the seat cushion 200 from continuing to rotate.

[0055] The following is for reference. Figures 1 to 7 A reversible chair according to an embodiment of the present invention is described in detail with reference to a specific example. It is to be understood that the following description is merely illustrative and not intended to limit the specific scope of the invention.

[0056] The flip chair includes a chair body 100, a seat cushion 200, and a flipping assembly 300.

[0057] The chair body 100 includes a backrest 110, a mounting plate 120, and a fixing frame 130. The mounting plate 120 is mounted to the wall using expansion screws. The fixing frame 130 has a vertically mounted fixing plate 131. The end face of the fixing plate 131 near the mounting plate 120 has a first mounting groove 135 that extends through both sides. The mounting plate 120 is snapped into the first mounting groove 135 and can be pulled out from both sides of the first mounting groove 135. The bottom of the fixing plate 131 has a vertically mounted fastening screw and is connected to the mounting plate 120 through the fastening screw. The fixing frame 130 has two mounting rings 133 arranged side by side. The mounting rings 133 have mounting holes 132. The opposite sides of the two mounting rings 133 have decorative end caps 134. The backrest 110 includes a backrest fixing member 111 and a backrest body 112 disposed on the backrest fixing member 111. The back of the backrest fixing member 111 is provided with a second mounting groove 113 through the bottom end. The overall structure formed by the mounting plate 120 and the fixing plate 131 after being snapped together is fitted into the second mounting groove 113. When the backrest 110 needs to be disassembled, it can be slid upward and pulled out.

[0058] The seat cushion 200 includes a seat cushion fixing member 230 and a seat cushion body 240 disposed on the seat cushion fixing member 230. One end of the seat cushion fixing member 230 is provided with a mounting cylinder 250. The mounting cylinder 250 is provided with a storage hole 210 through both ends, and the flipping component 300 is rotatably sleeved through the storage hole 210. The hole wall of the storage hole 210 is provided with a slot 211 extending along the axial direction of the storage hole 210 and passing through at least one end. The outer side wall of the mounting cylinder 250 is provided with an abutment portion 220 on the side opposite to the seat cushion fixing member 230. The abutment portion 220 is configured as an arc-shaped protrusion. When the seat cushion 200 is flipped downward to a near-horizontal state, the abutment portion 220 abuts against the fixing frame 130 to limit the seat cushion 200 from continuing to rotate.

[0059] The flipping assembly 300 includes a mounting shaft 340, two first connecting parts 310, two second connecting parts 320, two elastic reset members 330, three friction plates 360, two adjusting nuts 370, and two fixing parts 350. The fixing parts 350 are fitted into mounting holes 132. Fasteners are provided between the fixing parts 350 and the fixing bracket 130. A mating hole is provided on the side of the two fixing parts 350 that is close to each other, and both ends of the mounting shaft 340 are inserted into the mating hole. A hexagonal hole 353 is provided on the side of the two fixing parts 350 that is opposite to each other. A screw is provided between the fixing parts 350 and the mounting shaft 340. First limiting surfaces 341 are provided axially on opposite sides of the mounting shaft 340. A third limiting surface 352 is provided on the wall of the mating hole of the fixing part 350. The third limiting surface 352 cooperates with the first limiting surface 341 to prevent the fixing part 350 from rotating relative to the mounting shaft 340. The first connecting part 310, the second connecting part 320, the elastic reset member 330, the friction plate 360, and the adjusting nut 370 are all fitted with the mounting shaft 340 and can be pulled out from both ends of the mounting shaft 340. The two second connecting parts 320 are located on the side where the two elastic reset members 330 are close to each other, and the two first connecting parts 310 are located on the side where the two elastic reset members 330 are opposite to each other. The three friction plates 360 are located between the two second connecting parts 320. The outer walls of the middle friction plate 360 ​​and the two first connecting parts 310 are provided with locking blocks, which are engaged in the slots 211 of the receiving hole 210. The second connecting part 320 has multiple connecting structures 321 along the circumference. The connecting structures 321 are set as insertion holes. One end of the elastic reset member 330 is connected to the first connecting part 310, and the other end of the elastic reset member 330 can be inserted into different insertion holes. The inner sidewall of the second connecting part 320 is provided with a second limiting surface 322, which cooperates with the first limiting surface 341 to prevent the second connecting part 320 from rotating relative to the mounting shaft 340. The outer sidewall of the mounting shaft 340 is provided with a connecting thread outside the first limiting surface 341. The mounting shaft 340 is threadedly connected to two adjusting nuts 370 through the connecting thread, and the two adjusting nuts 370 abut against the opposite sides of the two second connecting parts 320. Two first protrusions 311 are evenly provided circumferentially on the side of the first connecting part 310 away from the elastic reset member 330. Two second protrusions 351 are provided on the side of the fixing part 350 near the first connecting part 310. When the seat cushion 200 is flipped upward to a near vertical state, the first protrusion 311 abuts against the second protrusion 351. The side of the first protrusion 311 that abuts against the second protrusion 351 is defined as a stop surface 312. The side of the first protrusion 311 away from the stop surface 312 is set as an inclined surface 313. When the fixing part 350 is rotated, the second protrusion 351 can pass through the first protrusion 311 from the side of the first protrusion 311 away from the stop surface 312.

[0060] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A flipper chair, characterized in that include: Chair body; A seat cushion is rotatably disposed on the chair body, and the seat cushion has a rotation axis; The flipping assembly includes a first connecting part, a second connecting part, and an elastic reset member. One of the first connecting part and the second connecting part is connected to the chair body, and the other is connected to the seat cushion. The second connecting part is provided with a plurality of connecting structures arranged circumferentially around the rotation axis. The elastic reset member is sleeved on the rotation axis. One end of the elastic reset member is connected to the first connecting part, and the other end of the elastic reset member is connected to one of the connecting structures. The flipping assembly also includes a mounting shaft disposed on the chair body, the axis of the mounting shaft coincides with the rotation axis, the elastic reset member is sleeved on the mounting shaft, the first connecting part is connected to the seat cushion and rotatably sleeved on the mounting shaft, and the second connecting part is connected to the mounting shaft and is fixed relative to the mounting shaft in the circumferential direction. The seat cushion can be flipped upwards to a first set position. The first connecting part is provided with a first protrusion. The flipping component also includes a fixing part provided on the chair body. The fixing part is provided with a second protrusion. When the seat cushion is flipped to the first set position, the first protrusion abuts against the second protrusion to restrict the seat cushion from continuing to flip.

2. The flipper chair of claim 1, wherein, The fixing part is rotatably mounted on the chair body. A fastener for limiting the rotation of the fixing part is provided between the fixing part and the chair body. The mounting shaft is connected to the fixing part. The first protrusion is located on the side of the first connecting part away from the elastic reset member. The first protrusion is used to abut against the side of the second protrusion to define a stop surface. The side of the first protrusion away from the stop surface is set as an inclined surface so that when the fixing part is rotated, the second protrusion can pass through the first protrusion from the side of the first protrusion away from the stop surface.

3. The tip-up chair according to claim 1 or 2, characterized in that The connection structure includes a socket provided on the second connection portion, and the end of the elastic reset member away from the first connection portion is inserted into the socket.

4. The tip-up chair according to claim 1 or 2, characterized in that The first connecting part, the second connecting part, and the elastic reset member are each provided in twos. The two second connecting parts are respectively located on the side where the two elastic reset members are arranged facing each other. The mounting shaft is fitted with at least one friction piece between the two second connecting parts, and at least one of the friction pieces is connected to the seat cushion.

5. The flipper chair of claim 4, wherein, At least one side of the mounting shaft is provided with a first limiting surface along the axial direction of the mounting shaft. The second connecting part is sleeved on the mounting shaft. The inner sidewall of the second connecting part is provided with a corresponding second limiting surface. The second limiting surface cooperates with the first limiting surface to prevent the second connecting part from rotating relative to the mounting shaft. The seat cushion is provided with a receiving hole for sleeved on the mounting shaft. The first connecting part, the second connecting part, the elastic reset member, and the friction plate are all located in the receiving hole. The hole wall of the receiving hole is provided with a slot extending along the axial direction of the receiving hole and penetrating at least one end. The first connecting part and at least one of the friction plates are provided with a locking block. The locking block is engaged in the locking slot.

6. The flipper chair of claim 5, wherein, Two adjusting nuts are threadedly connected to the mounting shaft, and the two adjusting nuts respectively abut against the sides of the second connecting portions which are away from each other.

7. The flipper chair of claim 1 or 2, wherein The turnover chair further comprises: A backrest is slidably arranged on the chair body, and the backrest is capable of sliding upward relative to the chair body so as to be detached from the chair body.

8. The flipper chair of claim 1 or 2, wherein, The cushion is capable of being turned downward to a second set position, and the cushion is provided with an abutting portion which abuts against the chair body when the cushion is turned to the second set position; or, The chair body is provided with a supporting portion which supports the cushion when the cushion is turned to the second set position so as to limit the cushion from continuing to rotate.

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