Folding chair
By controlling the relative movement of the connector and the alternate arrangement of the support tube and the foot tube, the problems of difficulty in adjusting, large size and inconvenient opening procedures during use and folding are solved, and the rapid opening and storage, portability and stability are improved.
Patent Information
- Application Number
- CN202421537242.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-02
AI Technical Summary
Traditional folding chairs have problems such as difficulty in adjusting, large size and inconvenient opening procedures during use and folding.
By controlling the relative movement of the first connector and the second connector, the conversion of the foot tube between the closed state and the open state is controlled, and the design of alternately arranged in the circumferential direction of the support tube and the foot tube are realized to achieve the function of rapid opening and storage.
It improves the user experience, simplifies the adjustment process when changing positions, reduces the overall size of the folding chair, is easy to carry and collect, and ensures the stress balance and stability of the chair.
Smart Images
Figure CN222764961U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of folding seats, in particular to a folding chair. Background Art
[0002] Folding chairs are easy to fold and carry. They are not only suitable for use outdoors and in temporary places, but are also essential emergency items for homes.
[0003] At present, traditional folding chairs are usually composed of a folding bracket and a supporting cloth surface, and the folding bracket is also composed of multiple support rods. Therefore, there are the following problems in the process of use: First, the folding bracket of the traditional folding chair will shrink inward after being lifted, so the connection relationship of the folding bracket still needs to be readjusted after changing the position, which will seriously affect the user experience; second, the traditional folding chair is large in size and relatively long in length after folding, so it is not conducive to carrying and collection. Especially when you need to carry more items when playing outdoors, the larger folding chair will not only bring a poor experience to the user, but also cause more troubles to the user. Third, because the opening procedure of the traditional folding chair is complicated and not smooth enough, the opening process will be time-consuming and inconvenient.
[0004] Therefore, it is desirable to provide a folding chair in the art to solve the above-mentioned technical problems. Utility Model Content
[0005] The utility model aims to provide a folding chair, which can further control the switching of the leg tubes between the closed state and the open state by controlling the relative movement of the first connecting member and the second connecting member to improve the flexibility of the device.
[0006] According to the utility model, a folding chair is provided, comprising a frame and a chair cover arranged on the frame, wherein the frame comprises:
[0007] a first connecting mechanism, the first connecting mechanism comprising a first connecting member, a guide track arranged on the first connecting member, and a support pipe hinged on the first connecting member through a fixing cavity,
[0008] a second connecting mechanism, the second connecting mechanism comprising a second connecting member for matching with the first connecting member, a leg pipe hinged to the second connecting member through the mounting cavity, and a locking mechanism arranged in the second connecting member,
[0009] Wherein, the latch on the first connecting member, the leg tube and the guide rail are slidably connected,
[0010] The first connecting member is configured to move upward under the action of an external force to cause the leg tubes to open outwards until the first connecting member is locked with the locking mechanism through the latch.
[0011] In one embodiment, the support tubes and the leg tubes are alternately arranged along the circumference of the frame.
[0012] In one embodiment, the locking mechanism includes a pushing portion configured in a frame-like form, a locking portion fixed to a side end of the pushing portion, and a spring disposed at one end of the locking portion away from the pushing portion.
[0013] In one embodiment, a locking hole for forming a locking connection with the locking portion is provided on the outer wall of the latch.
[0014] The pushing portion is configured to move inwardly under the action of an external force to cause the locking portion to release the locking connection with the latch, and the first connecting member moves downward under the action of gravity to cause the leg tube to retract inwardly.
[0015] In one embodiment, a first inclined surface is formed at the free end of the locking portion, and a second inclined surface for forming a sliding connection with the first inclined surface is provided at the top end of the latch.
[0016] In one embodiment, a limiting inclined surface for abutting against the leg tube is formed on the inner wall of the installation cavity.
[0017] In one embodiment, the fixing cavity is provided on the first connecting member, and the fixing cavity and the guide track are alternately arranged along the circumference of the first connecting member.
[0018] In one embodiment, the support tube includes at least two adjacently arranged seat tube portions and at least two adjacently arranged back tube portions, and the length of the back tube portion is greater than the length of the seat tube portion.
[0019] In one embodiment, the seat tube portion and the back tube portion are both composed of a plurality of telescopic tubes connected to each other, and adjacent telescopic tubes are connected via lockers.
[0020] In one embodiment, four corners of the seat cover are fixedly connected to the seat tube portion and the back tube portion respectively.
[0021] Compared with the prior art, the advantages of the utility model are:
[0022] First, the utility model can further control the conversion of the leg tube between the closed state and the open state by controlling the relative movement of the first connecting member and the second connecting member. Therefore, the device can have the ability to be quickly opened and stored, further improving the user experience.
[0023] Preferably, when the first connecting member and the second connecting member are in a separated state, the leg tubes and the support tubes in the utility model can both retract inwardly to effectively reduce the overall size of the folding chair, thereby facilitating the carrying and storage of the folding chair during outdoor activities; when the first connecting member and the second connecting member are in a locked state, the leg tubes and the support tubes in the utility model can both open outwardly, thereby cooperating with the chair cover to provide the user with a sitting environment and space, further bringing a better experience to the user.
[0024] Secondly, when the device is in the open state, the lower end surface of the leg tube will abut against the guide track, and the upper end surface of the leg tube will abut against the limiting inclined surface. In this way, the leg tube can always be in the open state. Therefore, the overall structure of the folding chair will not change during the position change process, and the folding chair can continue to be used after the position change, thereby avoiding the need to readjust the connection relationship of the folding bracket due to the change of position, further improving the user experience.
[0025] Third, compared with the prior art, the present invention arranges the support tubes and the leg tubes alternately along the circumferential direction, thereby effectively ensuring the force balance and stability of the folding chair, further ensuring the safety of the user when using it, and adopting such a layout can effectively avoid the problem of the seat leaning back or tipping over when the user stands up or sits down. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The present invention will be described in detail below in conjunction with the accompanying drawings, in which:
[0027] Figure 1 is a three-dimensional diagram of a folding chair according to the present invention, which schematically shows an opened state of the folding chair;
[0028] Figure 1a for Figure 1 A partial view showing the connection between the leg tube and the guide rail;
[0029] Figure 2 is a three-dimensional diagram of a folding chair according to the present invention, which schematically shows a closed state of the folding chair;
[0030] Figure 3 is a top view of a folding chair according to the utility model;
[0031] Figure 3a for Figure 3 Sectional view at AA in the middle;
[0032] Figure 3b for Figure 3 Sectional view at BB in the middle;
[0033] Figure 3c for Figure 3aA partial enlarged view of
[0034] Figure 3d for Figure 3b A partial enlarged view of
[0035] Figure 4a The first stage of the opening process of the folding chair is schematically shown;
[0036] Figure 4b The schematic diagram shows the second stage of the folding chair during the opening process;
[0037] Figure 4c The third stage of the folding chair's opening process is schematically shown;
[0038] Figure 5a The first stage of the closing process of the folding chair is schematically shown;
[0039] Figure 5b The second stage of the closing process of the folding chair is schematically shown;
[0040] Figure 5c The third stage of the closing process of the folding chair is schematically shown;
[0041] Figure 6 for Figure 1 A partial view showing the connection relationship between the first connecting member and the second connecting member,
[0042] Figure 6a The structure of the first connecting member in the folding chair is schematically shown;
[0043] Figure 6b The structure of the second connecting member in the folding chair is schematically shown.
[0044] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION
[0045] In order to make the technical solutions and advantages of the present invention more clearly understood, the exemplary embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than an exhaustive list of all embodiments. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other if there is no conflict.
[0046] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.
[0047] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements.
[0048] For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0049] The utility model will be further described below in conjunction with the accompanying drawings.
[0050] Figure 1 is a three-dimensional diagram of a folding chair according to the present invention, which schematically shows an opened state of the folding chair;
[0051] Figure 1a for Figure 1 A partial view showing the connection between the leg tube and the guide rail;
[0052] Figure 2 is a three-dimensional diagram of a folding chair according to the present invention, which schematically shows a closed state of the folding chair;
[0053] Figure 6 for Figure 1 A partial view showing the connection relationship between the first connecting member and the second connecting member,
[0054] Figure 6a The structure of the first connecting member in the folding chair is schematically shown;
[0055] Figure 6b The structure of the second connecting member in the folding chair is schematically shown.
[0056] like Figure 1 , 2As shown in 6 to 6b, the folding chair according to the utility model mainly includes a frame. Preferably, the frame includes a first connecting mechanism. The first connecting mechanism includes a first connecting member 10, a guide track 11 and a latch 13. Preferably, the guide track 11 is configured as an inclined track and is provided in plurality, and the plurality of guide tracks 11 are arranged at intervals on the first connecting member 10; the latch 13 is configured as a columnar structure, and the latch 13 is provided at the center of the first connecting member 10, so as to facilitate its smooth penetration into the second connecting member 20 (described below) to complete the locking connection work, the content of which is described below.
[0057] According to the utility model, if Figure 1 and 2 As shown, the frame also includes a second connection mechanism. The second connection mechanism includes a second connection member 20 and a leg tube 22 for matching with the first connection member 10. Preferably, the leg tube 22 is hinged on the second connection member 20 through the mounting cavity 21, and the free end of the leg tube 22 can extend through the guide track 11 and form a sliding connection therewith. Therefore, during the folding process, the leg tube 22 can realize the conversion between the open state and the closed state under the joint action of the guide track 11 and the second connection member 20.
[0058] Explanation for the above “matching”: When the skeleton is in a fully open state (such as Figure 3a and 3c As shown), the latch 13 of the first connecting member 10 is inserted into the second connecting member 20 and forms a locking connection with the locking mechanism. At this time, the upper end surface of the first connecting member 10 and the lower end surface of the second connecting member 20 will be in abutment state to promote the first connecting member 10 to match the second connecting member 20.
[0059] In one embodiment, the second connection mechanism further includes a locking mechanism disposed in the second connection member 20. Preferably, when the latch 13 is inserted into the second connection member 20, the locking mechanism can form a locking connection with the latch 13, and the leg tube 22 is in an open state at this time. Preferably, under the locking action of the locking mechanism and the latch 13, it is possible to ensure that the leg tube 22 is always in an open state, further improving the firmness and stability of the folding chair.
[0060] Preferably, since the leg tube 22 can always be in an open state under the locking action of the locking mechanism and the pin 13, the overall structure of the folding chair (i.e., the open state of the leg tube 22) will not change during the position change process, and the folding chair can continue to be used after the position change, thereby avoiding the need to readjust the connection relationship of the folding bracket due to the change of position, further improving the user experience.
[0061] According to a specific embodiment of the utility model, the first connecting member 10 can move upward under the action of an external force (for example, an axially upward thrust applied by a user), and the leg tube 22 will also gradually change from a closed state to an open state along the movement path provided by the guide track 11 under the pushing action of the first connecting member 10, until the pin 13 penetrates into the second connecting member 20 and forms a lock with the locking mechanism, at which time the leg tube 22 will be fully opened to be in an open state.
[0062] Figure 3 is a top view of a folding chair according to the utility model; Figure 3a for Figure 3 Sectional view at AA in the middle; Figure 3b for Figure 3 Sectional view at BB in the middle; Figure 3c for Figure 3a A partial enlarged view of Figure 3d for Figure 3b A partial enlarged view of .
[0063] Preferably, if Figure 3~3d As shown, a limiting inclined surface 211 is formed on the inner wall of the installation cavity 21 for abutting against the upper surface of the leg tube 22. It is worth noting that, in the open state, the lower end surface of the leg tube 22 will abut against the guide track 11, and the upper end surface of the leg tube 22 will abut against the limiting inclined surface 211. Therefore, in this way, the leg tube 22 can have good firmness and stability during use by the user, further improving the user experience.
[0064] In one embodiment of the present invention, Figure 3~3d As shown, a transversely arranged accommodation chamber is formed in the second connecting member 20. Preferably, the locking mechanism is installed in the accommodation chamber, and the locking mechanism includes a pushing portion 31 configured in a frame-like form, a locking portion 32 arranged at a side end of the pushing portion 31, and a spring 33 arranged at one end of the locking portion 32 away from the pushing portion 31.
[0065] It is worth noting that the spring 33 is fixedly connected to the locking portion 32, and the two ends of the spring 33 are axially abutted against the inner wall of the accommodating chamber and the end of the locking portion 32. Therefore, the axial movement of the locking portion 32 can be controlled by the cooperation between the pushing portion 31 and the spring 33, so as to help adjust the connection relationship between the first connecting member 10 and the second connecting member 20.
[0066] In one embodiment, Figure 3b and 3dAs shown, a locking hole 131 is provided on the outer wall of the latch 13. Preferably, the locking portion 32 can extend into the locking hole 131 to form a locking connection relationship with the latch 13. In addition, the pushing portion 31 can also move toward the inside of the accommodating chamber under the action of an external force (for example, an axially inward thrust applied by a user), at which time the locking portion 32 will exit the locking hole 131 to cause the locking portion 32 to release the locking connection with the latch 13, and from then on, the first connecting member 10 will freely descend under the action of its own gravity and the leg tube 22, and at the same time, the leg tube 22 will shrink inward under the guidance of the guide track 11 to be in a closed state.
[0067] In one embodiment, Figure 4b As shown, a first inclined surface 321 is formed at the free end of the locking portion 32. In other words, the first inclined surface 321 is arranged at one end of the locking portion 32 away from the spring 33. A second inclined surface 132 is arranged at the top end of the latch 13, and during the upward movement of the first connecting member 10, the second inclined surface 132 forms a sliding connection with the first inclined surface 131.
[0068] In the present invention, when the latch 13 of the first connecting member 10 penetrates into the second connecting member 20, the second inclined surface 132 of the latch 13 will abut against the first inclined surface 321 of the locking portion 32. As the first connecting member 10 continues to move upward, the locking portion 32 will overcome the elastic force of the spring 33 under the pushing action of the latch 13 and move inward until the locking portion 32 enters the locking hole 131. At this time, the first connecting member 10 and the second connecting member 20 form a locked connection.
[0069] According to the utility model, if Figure 1 , 6 As shown in Figures 6a to 6a, the first connection mechanism further includes a fixing cavity 12 and a support tube (the support tube includes a seat tube portion 14 and a back tube portion 15, and both the seat tube portion 14 and the back tube portion 15 are connected to the fixing cavity 12, which will be described in detail below). Preferably, the fixing cavity 12 is provided on the first connection member 10, and the support tube can be hinged to the first connection member 10 through the fixing cavity 12. Preferably, a limit block for limiting the maximum movement path of the support tube is provided in the fixing cavity 12, so as to ensure the stability and firmness of the support tube during use.
[0070] In one embodiment, the fixed cavity 12 and the guide track 11 are alternately arranged along the circumference of the first connecting member 10. Since the support tube is hinged to the first connecting member 10 through the fixed cavity 12, and the leg tube 22 needs to pass through the guide track 11 and form a sliding connection therewith, it can be understood that the support tube and the leg tube 22 in the utility model are alternately arranged along the circumference.
[0071] In the prior art, two symmetrical arrangements are usually used, that is, two support tubes are arranged between two adjacent leg tubes. Obviously, such an arrangement makes it easy for the chair to lean back or tip over when the user stands up or sits down. However, the present application effectively ensures the force balance and stability of the folding chair by arranging the support tubes and the leg tubes 22 in an alternating manner along the circumferential direction, further ensuring the safety of the user when using the chair.
[0072] In other embodiments, three leg tubes 22 can be provided, and the adjacent leg tubes 22 are arranged at 120 degrees. In this way, the force stability of the folding chair can be ensured, and the production cost can be reduced while reducing the overall weight of the folding chair, thereby further improving the portability of the device and providing users with a better experience.
[0073] According to the utility model, if Figure 1 As shown, the support pipe includes at least two adjacent seat tubes 14 and at least two adjacent back tubes 15. In order to meet user needs, the length of the back tube 15 is usually greater than the length of the seat tube 14, so that the folding chair can provide a sitting environment for the user.
[0074] In addition, the folding chair also includes a seat cover (not shown) covered on the frame. Preferably, the four corners of the seat cover are respectively fixedly connected to the seat tube portion 14 and the back tube portion 15 (for example, fixedly connected by screws), so as to provide users with a better experience.
[0075] In the present invention, the chair cover generally includes a seat and a backrest fixedly connected to each other. Preferably, the angle formed between the seat and the backrest is generally within the range of 90° to 110°, so that after the chair cover and the frame are assembled, the user can have a comfortable sitting experience.
[0076] In one embodiment, the seat tube portion 14 and the back tube portion 15 are generally composed of a plurality of interconnected telescopic tubes, and adjacent telescopic tubes are connected by lockers. In the present invention, the user can extend the corresponding telescopic tube and more easily lock two adjacent telescopic tubes through the lockers at the corresponding positions, further improving the operability of the device.
[0077] In the present invention, the locking device adopts a marble fixing method, that is, the two adjacent telescopic tubes are locked by ejecting a marble. Preferably, the locking device can also adopt other methods, that is, it can lock the two adjacent telescopic tubes.
[0078] In one embodiment, the second connection mechanism further includes a limit seat adapted to fit the support tube. Preferably, the limit seat and the mounting cavity 21 are alternately arranged on the second connection member 20 along the circumferential direction, and when the frame is in a fully opened state, the limit seat can be completely hung on the support tube to prevent it from shaking to the left and right directions, further improving the stability of the folding chair and the user's experience.
[0079] In one embodiment, a pipe plug is provided at the free end of the seat tube portion 14 and the back tube portion 15. In the present invention, the pipe plug can play the role of preventing hands from being cut, preventing seat fabric from being cut, etc., so as to further improve the safety of the device.
[0080] In one embodiment, a foot pad is provided at the bottom end of the leg tube 22. Preferably, the foot pad is wrapped around the outside of the leg tube 22, thereby increasing its contact area with the ground and further improving the stability of the folding chair when in use. In other embodiments, the foot pad can also be installed inside the leg tube 22.
[0081] Figure 4a The first stage of the unfolding process of the folding chair is schematically shown.
[0082] Figure 4b The second stage of the unfolding process of the folding chair is schematically shown.
[0083] Figure 4c The third stage of the unfolding process of the folding chair is schematically shown.
[0084] Combine the following Figures 4a to 4c Introduce the opening principle of this device:
[0085] First, open the seat tube portion 14 and the back tube portion 15 outwards;
[0086] Then, the first connecting member 10 is pushed upward by an external force (for example, an axially upward thrust applied by the user), and at the same time, the leg tube 22 is pushed by the first connecting member 10 and gradually changes from a closed state to an open state along the movement path provided by the guide track 11, until the latch 13 penetrates into the second connecting member 20 and forms a lock with the locking portion 32. At this time, the leg tube 22 will be fully opened to make the frame in a fully open state.
[0087] Preferably, when the latch 13 of the first connector 10 penetrates into the second connector 20, the second inclined surface 132 of the latch 13 will abut against the first inclined surface 321 of the locking portion 32. As the first connector 10 continues to move upward, the locking portion 32 will overcome the elastic force of the spring 33 and move inward under the push of the latch 13 until the locking portion 32 enters the locking hole 131. At this time, the first connector 10 and the second connector 20 form a locked connection.
[0088] Figure 5a The diagram schematically shows the first stage of the closing process of the folding chair.
[0089] Figure 5b The second stage of the closing process of the folding chair is schematically shown.
[0090] Figure 5c The third stage of the closing process of the folding chair is schematically shown.
[0091] Combine the following Figure 5a to 5c Introduce the closing principle of this device:
[0092] First, the pushing portion 31 is pushed into the accommodating chamber by an external force (e.g., an axial inward thrust by a user), and the locking portion 32 is then withdrawn from the locking hole 131, and the locking portion 32 and the latch 13 are released from the locking connection under the cooperation of the first inclined surface 321 and the second inclined surface 132.
[0093] Then, the first connecting member 10 will freely move downward under the action of its own gravity and the leg tube 22 , and at the same time, the leg tube 22 will shrink inwardly under the guidance of the guide track 11 to be in a closed state.
[0094] Finally, the seat tube portion 14 and the back tube portion 15 are retracted inwardly to put the frame in a completely closed state.
[0095] It is worth noting that the skeleton in the above content is a general term for the first connecting mechanism and the second connecting mechanism.
[0096] In the present invention, in combination with 4a, 4b and 4c, it can be known that the external force applied when opening the frame is the axially upward thrust applied by the user to the bottom of the first connecting member 20; in combination with 5a, 5b and 5c, it can be known that when closing the frame, the first connecting member 10 will move axially downward under the action of its own gravity.
[0097] Compared with the prior art, the advantages of the present invention are:
[0098] First, the present invention can further control the switching of the leg tube 22 between the closed state and the open state by controlling the relative movement of the first connecting member 10 and the second connecting member 20, so that the device can have the ability to be quickly opened and stored, further improving the user experience.
[0099] Preferably, when the first connecting member 10 and the second connecting member 20 are in a separated state, the leg tubes 22 and the support tubes in the utility model can be retracted inwardly to effectively reduce the overall size of the folding chair, thereby facilitating the carrying and storage of the folding chair during outdoor activities; when the first connecting member 10 and the second connecting member 20 are in a locked state, the leg tubes 22 and the support tubes in the utility model can be opened outwardly, thereby cooperating with the chair cover to provide the user with a sitting environment and space, further bringing a better experience to the user.
[0100] Secondly, when the device is in the open state, the lower end surface of the leg tube 22 will abut against the guide track 11, and the upper end surface of the leg tube 22 will abut against the limiting inclined surface 211. In this way, the leg tube 22 can always be in the open state. Therefore, the overall structure of the folding chair will not change during the position change process, and the folding chair can continue to be used after the position change, thereby avoiding the need to readjust the connection relationship of the folding bracket due to the position change, further improving the user experience.
[0101] Third, compared with the prior art, the present invention can effectively ensure the force balance and stability of the folding chair by arranging the support tube and the leg tube 22 in an alternating manner along the circumferential direction, further ensuring the safety of the user when using it, and adopting such a layout can effectively avoid the problem of the seat leaning back or tipping over when the user stands up or sits down.
[0102] The above are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art can easily make changes or modifications within the scope of the present invention, and such changes or modifications should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.
Claims
1. A folding chair, comprising a frame and a chair cover arranged on the frame, characterized in that: The skeleton comprises: A first connecting mechanism, the first connecting mechanism comprising a first connecting member (10), a guide track (11) arranged on the first connecting member (10), and a support tube hinged to the first connecting member (10) through a fixing cavity (12), a second connecting mechanism, the second connecting mechanism comprising a second connecting member (20) for matching with the first connecting member (10), a leg tube (22) hingedly connected to the second connecting member (20) through a mounting cavity (21), and a locking mechanism arranged in the second connecting member (20), Wherein, the latch (13) on the first connecting member (10), the leg tube (22) and the guide rail (11) are slidably connected, The first connecting member (10) is configured to move upward under the action of an external force to cause the leg tube (22) to open outward until it is locked with the locking mechanism through the latch (13).
2. The folding chair according to claim 1, characterized in that: The support tubes and the leg tubes (22) are arranged alternately along the circumference of the frame.
3. The folding chair according to claim 2, characterized in that: The locking mechanism comprises a pushing portion (31) configured in a frame-like form, a locking portion (32) fixed to a side end of the pushing portion (31), and a spring (33) arranged at one end of the locking portion (32) away from the pushing portion (31).
4. The folding chair according to claim 3, characterized in that: A locking hole (131) for forming a locking connection with the locking portion (32) is provided on the outer wall of the latch (13). The pushing portion (31) is configured to move inwards under the action of an external force to cause the locking portion (32) to release the locking connection with the latch (13), and the first connecting member (10) moves downward under the action of gravity to cause the leg tube (22) to retract inwards.
5. The folding chair according to claim 4, characterized in that: A first inclined surface (321) is formed at the free end of the locking portion (32), and a second inclined surface (132) for forming a sliding connection with the first inclined surface (321) is provided at the top end of the latch (13).
6. The folding chair according to claim 1, characterized in that: A limiting inclined surface (211) for abutting against the leg tube (22) is formed on the inner wall of the installation cavity (21).
7. The folding chair according to claim 6, characterized in that: The fixing cavity (12) is provided on the first connecting member (10), and the fixing cavity (12) and the guide track (11) are alternately arranged along the circumference of the first connecting member (10).
8. The folding chair according to claim 7, characterized in that: The support tube comprises at least two adjacently arranged seat tube portions (14) and at least two adjacently arranged back tube portions (15), wherein the length of the back tube portion (15) is greater than the length of the seat tube portion (14).
9. The folding chair according to claim 8, characterized in that: The seat tube portion (14) and the back tube portion (15) are both composed of a plurality of telescopic tubes connected to each other, and adjacent telescopic tubes are connected via lockers.
10. The folding chair according to claim 8 or 9, characterized in that: The four corners of the seat cover are respectively fixedly connected to the seat tube portion (14) and the back tube portion (15).