Chair seat assembly convenient to disassemble and chair

Abstract

The utility model discloses a seat component and seat convenient to dismantle, including the upper shell and be equipped with the lower shell of upper shell bottom, the upper shell is configured to support the soft cushion layer, the seat component realizes the detachable connection of upper shell and lower shell through the magnetic attraction subassembly between upper shell and lower shell, the magnetic attraction assembly comprises a magnet and a positioning piece matched with the magnet in an attraction mode, the magnet is arranged on one of the upper shell body and the lower shell body, the positioning piece is arranged on the other one of the upper shell body and the lower shell body, and rapid connection between the upper shell body and the lower shell body is achieved through magnetic attraction force between the positioning piece and the magnet. And therefore, the upper shell and the lower shell are simple and convenient to mount and dismount.

Description

Technical Field

[0001] The utility model relates to the field of office chairs, in particular to a chair seat assembly and a chair that are easy to disassemble. Background Art

[0002] The seat of an office chair provides comfortable seating in an office environment, helping employees sit at their desks for extended periods without fatigue or discomfort. The seat assembly of a common office chair consists of a lower shell and an upper shell connected to the lower shell by screws. To ensure the chair's aesthetics and comfort, the seat assembly also includes a seat cover and a cushioning layer. The seat cover is wrapped around the cushioning layer and glued to the upper surface of the upper shell together with the cushioning layer, making it non-removable.

[0003] Since people frequently come into contact with the seat surface when using an office chair, frequent contact can easily lead to contamination. Therefore, a removable seat cover is desirable. The bottom surface of the lower shell is connected to the seat base and may also be connected to functional structures such as a footrest. Therefore, the seat cover does not cover the lower shell. Instead, the seat cover wraps around the cushioning layer, with the edge pulled to the bottom surface of the upper shell, where it is compressed between the upper and lower shells.

[0004] Then, when the user contaminates the seat cover and wants to clean it, the user needs to unscrew the screws connecting the upper shell and the lower shell, remove the lower shell, and then replace the seat cover; the screws are generally distributed around the upper shell and the lower shell, and tightening the screws is rather cumbersome, and sometimes the screws at the bottom of the seat may be in a narrow position or at a poor angle, resulting in inconvenience in tightening the screws. Therefore, how to simplify the installation and disassembly of the upper shell and the lower shell is a problem to be solved by the present invention. Summary of the Invention

[0005] In order to solve the above-mentioned technical problems, the purpose of the present utility model is to provide a chair seat assembly that is easy to disassemble. The chair seat assembly realizes a detachable connection between the upper shell and the lower shell through a magnetic attraction assembly between the upper shell and the lower shell. The magnetic attraction assembly includes a magnet and a positioning member that is attracted and cooperates with the magnet. The magnet is arranged on one of the upper shell or the lower shell, and the positioning member is arranged on the other one of the upper shell and the lower shell. Through the magnetic attraction between the positioning member and the magnet, a quick connection between the upper shell and the lower shell is realized, making the installation and disassembly of the upper shell and the lower shell simple and convenient.

[0006] The technical solution of the present utility model is achieved as follows:

[0007] A chair seat assembly that is easy to disassemble includes an upper shell and a lower shell arranged at the bottom of the upper shell. The upper shell is configured to support a soft cushion layer. The upper shell and the lower shell are detachably connected via a magnetic attraction assembly. The magnetic attraction assembly includes a magnet and a positioning member that is attracted to and cooperates with the magnet. The magnet is arranged on one of the upper shell or the lower shell, and the positioning member is arranged on the other of the upper shell or the lower shell.

[0008] Preferably, a plurality of positioning grooves are provided on the bottom surface of the upper shell, the magnets are fixed in the positioning grooves, and an insertion space is left between the magnets and the notches of the positioning grooves; the positioning piece is fixedly arranged on the upper surface of the lower shell, and when the upper shell is connected to the lower shell, the positioning piece is inserted into the insertion space and magnetically connected to the magnet; the positioning groove can not only accommodate the magnet, but also provide an insertion space to cooperate with a part of the positioning piece, which can realize horizontal positioning, so that the upper shell and the lower shell are positioned more accurately during installation, and the seat assembly is more stable, preventing the user from experiencing unstable connection between the upper shell and the lower shell during use.

[0009] Preferably, the positioning grooves are spaced and circumferentially arranged on the bottom surface of the upper shell. By arranging positioning grooves in all directions around the upper shell and the lower shell for burying magnets, the magnetic attraction force is evenly distributed around the seat, thereby increasing the overall structural stability of the chair and ensuring a firm connection between the upper and lower shells.

[0010] Preferably, the upper shell and the lower shell are made of hard plastic injection molding, and the magnet is embedded in the positioning groove during the injection molding process of the upper shell; the upper shell and the lower shell made of plastic are not only light, easy to clean, and have low production costs, but can also be made into various shapes and colors through the injection molding process; the magnet is embedded in the positioning groove as a pre-embedded part during the injection molding process and is not easy to fall off.

[0011] Preferably, a threaded hole is provided on the upper surface of the lower shell, and the positioning piece is a screw that cooperates with the threaded hole. When the upper shell is connected to the lower shell, the nut of the screw is inserted into the plug-in space of the positioning groove and is magnetically connected to the magnet; the screw is used as a positioning piece to be magnetically connected to the magnet. On the one hand, the screw is threadedly connected to the lower shell, and the connection is stable and simple. On the other hand, the screw can also be attracted by the magnet to realize the connection between the upper shell and the lower shell.

[0012] Preferably, the upper surface of the lower shell is provided with a countersunk hole, and the positioning member is a pin shaft that cooperates with the countersunk hole, and one end of the pin shaft cooperates with the countersunk hole; when the upper shell is connected to the lower shell, the other end of the pin shaft is inserted into the plug-in space of the positioning groove and is magnetically connected to the magnet; the pin shaft is used as a positioning member to be magnetically connected to the magnet. On the one hand, one end of the pin shaft has an interference fit with the countersunk hole of the lower shell, and the connection is stable and simple. On the other hand, the pin shaft can also be attracted by the magnet to realize the connection between the upper shell and the lower shell.

[0013] Preferably, a convex edge extends downward along the bottom edge of the upper shell, and the convex edge surrounds the edge of the upper shell to form a first convex ring, and a flange extends upward along the upper surface edge of the lower shell, and the flange surrounds the edge of the lower shell to form a second convex ring; when the upper shell is connected to the lower shell, the second convex ring is staggered with the first convex ring, and the second convex ring is located in the area enclosed by the first convex ring; through the design of the first convex ring and the second convex ring, and the staggered structure formed by the two when the upper shell is connected to the lower shell, a more secure and stable connection effect is achieved, and at the same time, it is easier to align and avoid dislocation when combining the upper shell and the lower shell.

[0014] Preferably, a soft cushion layer is glued to the top of the upper shell, and an outer cover is covered on the outside of the soft cushion layer, the outer cover covers the surface of the soft cushion layer, and the closing position of the outer cover forms a fixing part; the fixing part is squeezed against the bottom surface of the upper shell by the second convex ring after passing through the first convex ring, so that the fixing part is pressed between the upper shell and the lower shell; the soft cushion layer can improve the user's feeling of use, and the outer cover is used to prevent the soft cushion layer from being contaminated. The design of the fixing part being pressed between the upper shell and the lower shell can increase the stability of the connection and prevent the outer cover from sliding or moving during movement or use.

[0015] Preferably, a plurality of raised portions are provided on the bottom surface of the upper shell at intervals around the periphery, and the positioning grooves are formed on the raised portions. When the upper shell is connected to the lower shell, the second raised ring is located between the first raised ring and the raised portion, and the inner side of the fixing portion is clamped between the first raised ring and the raised portion, making the outer cover connection more secure.

[0016] Preferably, an elastic band is provided on the inner edge of the fixing portion of the outer cover to prevent the outer cover from sliding. The elastic band can effectively prevent the outer cover from sliding or shifting during use, and keep the position of the outer cover stable.

[0017] Preferably, a convex cap is provided on the upper surface of the upper shell at a position corresponding to the raised portion, the positioning groove passes through the convex cap, and the magnet is positioned in the convex cap; an avoidance groove is provided at a corresponding position on the bottom surface of the cushion layer, and after the cushion layer is combined with the upper shell, the convex cap is in the avoidance groove; since a magnet is fixed in the positioning groove, a plug-in space must be reserved for the positioning part to cooperate, and in order to make the seat assembly compact and to reduce production costs, the thickness of the shell should not be too thick, so a convex cap is provided to fix the magnet; in order to avoid the convex cap, an avoidance groove is provided at a corresponding position on the bottom surface of the cushion layer.

[0018] Preferably, a drawstring is provided inside the inner edge of the fixing portion of the outer cover to prevent the outer cover from sliding. The drawstring is simple in design and the user can easily adjust the length of the drawstring to achieve a quick and accurate fixing effect.

[0019] The utility model also provides a chair, comprising the easily detachable chair seat assembly as described in any one of the above items.

[0020] The principle and beneficial effects of the present invention using the above technical solution are:

[0021] 1. The utility model realizes the detachable connection between the upper shell and the lower shell by arranging a magnetic attraction component between the upper shell and the lower shell. The magnetic attraction component includes a magnet and a positioning member that is attracted and cooperates with the magnet. The magnet is arranged on one of the upper shell or the lower shell, and the positioning member is arranged on the other of the upper shell and the lower shell. The magnetic connection between the upper shell and the lower shell is realized by the magnetic attraction between the positioning member and the magnet. The magnetic connection allows the upper shell and the lower shell to be installed together quickly and easily. Just bring the two parts close together and they will automatically adsorb together, eliminating the tedious installation steps. Similar to installation, disassembly also becomes very simple. The user only needs to separate the two parts and the magnetic force will be released. No additional tools are needed, which greatly reduces the difficulty of disassembly.

[0022] 2. Compared with the conventional method of connecting the upper and lower shells with bolts, the magnetic connection is not only simple and easy to operate, but also, when replacing the outer cover later, it only needs to apply upward force to the upper shell to eliminate the magnetic force between the positioning piece and the magnet to separate the upper and lower shells. Conventional bolt connections require unscrewing the bolts to separate the upper and lower shells, which is not only cumbersome and time-consuming, but the screws at the bottom of the seat may be narrow or at an unfavorable angle, making it inconvenient to tighten the screws.

[0023] 3. The present invention can also ensure more precise positioning of the upper shell and the lower shell during installation through the cooperation of the positioning groove and the positioning piece, and at the same time, the seat assembly is more stable when the user is in use; in addition, the design of the fixing portion of the outer cover being pressed between the upper shell and the lower shell, and the design of the inner side of the fixing portion being clamped between the first convex ring and the protruding portion, increases the stability of the connection between the outer cover and the other parts of the seat assembly, and prevents the outer cover from moving or sliding during movement or use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The exploded view of the seat assembly without the cover;

[0025] Figure 2 Schematic diagram of the three-dimensional structure of the upper shell and the magnet;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the lower shell and the positioning member;

[0027] Figure 4a The exploded view of the upper and lower shells. Figure 4b for Figure 4a AA section view;

[0028] Figure 5 is a bottom view of the seat assembly;

[0029] Figure 6 for Figure 5 BB cross-sectional view;

[0030] Figure 7 A schematic diagram of the three-dimensional structure of the seat assembly excluding the outer cover and the cushion layer;

[0031] Figure 8 for Figure 7 CC cross-sectional view;

[0032] Figure 9a A top view of the seat assembly excluding the cover and upholstery. Figure 9b for Figure 9a DD cross-sectional view;

[0033] The figures are marked as 1-upper shell, 11-first convex ring, 12-convex portion, 13-convex cap, 2-lower shell, 21-second convex ring, 22-threaded hole, 3-magnet, 4-positioning member, 5-cushion layer, 51-avoidance groove, 6-outer cover, 61-fixing portion, 7-positioning groove, 71-plug-in space. DETAILED DESCRIPTION

[0034] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0036] The specific implementation of the utility model is as follows:

[0037] Please refer to Figure 1-9a 、 Figure 9b The embodiment of the present application provides a chair seat assembly that is easy to disassemble, including an upper shell 1 and a lower shell 2 provided at the bottom of the upper shell 1. The innovation of the present invention is that, unlike the traditional method of connecting the upper shell 1 and the lower shell 2 with bolts, Figure 8 As shown, the upper shell 1 and the lower shell 2 of the utility model are detachably connected through a magnetic attraction component. The magnetic attraction component includes a magnet 3 and a positioning member 4 that is attracted and cooperates with the magnet 3. The magnet 3 is arranged on any one of the upper shell 1 or the lower shell 2, and the positioning member 4 is arranged on the other one of the upper shell 1 or the lower shell 2; through the design of the magnetic attraction component, the installation and disassembly of the upper shell 1 and the lower shell 2 become simple and convenient.

[0038] Further, if Figure 2 As shown, as an embodiment, the bottom surface of the upper shell 1 can be provided with a plurality of positioning grooves 7, the magnet 3 is fixed in the positioning groove 7, and an insertion space 71 is left between the magnet 3 and the notch of the positioning groove 7; the positioning member 4 is fixedly arranged on the upper surface of the lower shell 2, and when the upper shell 1 is connected to the lower shell 2, the positioning member 4 is inserted into the insertion space 71 and magnetically connected to the magnet 3; the positioning groove 7 can not only accommodate the magnet 3, but also provide a plug-in space 71 to cooperate with a part of the positioning member 4, limiting the horizontal freedom of the magnet 3 and the positioning member 4, thereby limiting the horizontal freedom of the upper shell 1 and the lower shell 2, so that the upper shell 1 and the lower shell 2 will not be misaligned, and the seat assembly is more stable.

[0039] like Figure 2 As shown, the positioning grooves 7 are arranged at intervals and circumferentially on the bottom surface of the upper shell 1; by arranging the positioning grooves 7 around the upper shell 1 and the lower shell 2 for magnetic connection, the magnetic force is evenly distributed around the seat, thereby increasing the overall structural stability of the chair and ensuring a firm connection between the upper and lower shells.

[0040] Specifically, the upper shell 1 and the lower shell 2 are injection molded from hard plastic. The upper shell 1 and the lower shell 2 made of plastic are not only light, easy to clean, and have low production costs, but can also be made into various shapes and colors through the injection molding process. The magnet 3 is pre-embedded in the positioning groove 7 during the injection molding process of the upper shell 1 and the lower shell 2. The magnet 3 is embedded in the positioning groove 7 as an embedded part and is not easy to fall off. It is fixed on one of the upper shell 1 or the lower shell 2.

[0041] As an implementation method, refer to Figure 3 and Figure 8 The upper surface of the lower shell 2 is provided with a threaded hole 22, and the positioning member 4 is a screw that cooperates with the threaded hole 22. When the upper shell 1 is connected to the lower shell 2, the nut of the screw is inserted into the insertion space 71 of the positioning groove 7 and is magnetically connected to the magnet 3; the screw is used as the positioning member 4 to be magnetically connected to the magnet 3. On the one hand, the screw is threadedly connected to the lower shell 2, and the connection is stable and simple. On the other hand, the screw can also be attracted by the magnet 3 to realize the connection between the upper shell 1 and the lower shell 2.

[0042] As another embodiment, the upper surface of the lower shell 2 is provided with a countersunk hole, and the positioning member 4 is a pin shaft that cooperates with the countersunk hole, and one end of the pin shaft cooperates with the countersunk hole; when the upper shell 1 is connected to the lower shell 2, the other end of the pin shaft is inserted into the plug-in space 71 of the positioning groove 7 and is magnetically connected to the magnet 3; the pin shaft is used as the positioning member 4 to be magnetically connected to the magnet 3. On the one hand, one end of the pin shaft is interference fit with the countersunk hole of the lower shell 2, and the connection is stable and simple. On the other hand, the pin shaft can also be attracted by the magnet 3 to realize the connection between the upper shell 1 and the lower shell 2.

[0043] Furthermore, if Figure 9a and Figure 9b As shown, a convex edge extends downward along the bottom edge of the upper shell 1, and the convex edge surrounds the edge of the upper shell 1 to form a first convex ring 11. A flange extends upward along the upper surface edge of the lower shell 2, and the flange surrounds the edge of the lower shell 2 to form a second convex ring 21. When the upper shell 1 is connected to the lower shell 2, the second convex ring 21 is staggered with the first convex ring 11, and the second convex ring 21 is located in the area enclosed by the first convex ring 11. Some embodiments achieve a more secure and stable connection effect by providing the first convex ring 11 and the second convex ring 21, as well as the staggered structure formed by the two when the upper shell 1 and the lower shell 2 are connected. At the same time, when the upper shell 1 and the lower shell 2 are combined, it is easier to align and avoid misalignment.

[0044] Furthermore, if Figure 5 and Figure 6 A cushion layer 5 is glued to the top of the upper shell 1, and an outer cover 6 is covered on the outside of the cushion layer 5, and the outer cover 6 covers the surface of the cushion layer 5, and the closing position of the outer cover 6 forms a fixing portion 61; the fixing portion 61 passes through the first convex ring 11 and is squeezed tightly on the bottom surface of the upper shell 1 by the second convex ring 21, so that the fixing portion 61 is pressed between the upper shell 1 and the lower shell 2; the cushion layer 5 can improve the user's feeling of use, and the outer cover 6 is used to prevent the cushion layer 5 from being contaminated. The design of the fixing portion 61 being pressed between the upper shell 1 and the lower shell 2 can increase the stability of the connection and prevent the outer cover 6 from moving or sliding during use.

[0045] More specifically, the bottom surface of the upper shell 1 is provided with a plurality of raised portions 12 at intervals around the circumference, and the positioning grooves 7 are formed on the raised portions 12. When the upper shell 1 is connected to the lower shell 2, the second raised ring 21 is located between the first raised ring 11 and the raised portion 12, and the inner side of the fixing portion 61 is clamped between the first raised ring 11 and the raised portion 12, making the connection of the outer cover 6 more secure.

[0046] like Figure 1 and Figure 2 As shown, a convex cap 13 is provided at a position on the upper surface of the upper shell 1 corresponding to the raised portion 12, the positioning groove 7 passes through the convex cap 13, and the magnet 3 is positioned in the convex cap 13; an avoidance groove 51 is provided at a corresponding position on the bottom surface of the cushion layer 5, and after the cushion layer 5 is combined with the upper shell 1, the convex cap 13 is in the avoidance groove 51; since the magnet 3 is fixed in the positioning groove 7, an insertion space 71 is required for the positioning member 4 to cooperate, and in order to make the seat assembly compact and to reduce production costs, the thickness of the shell should not be too thick, so a convex cap 13 is provided for fixing the magnet 3; in order to avoid the convex cap 13, an avoidance groove 51 is provided at a corresponding position on the bottom surface of the cushion layer 5.

[0047] In some embodiments of the present application, an elastic band or a drawstring is provided on the fixing portion 61 of the outer cover 6 to prevent the outer cover 6 from sliding. The elastic band can effectively prevent the outer cover 6 from sliding or shifting during use, and keep the position of the outer cover 6 stable.

[0048] As another embodiment, the magnet 3 can be pre-embedded in the lower shell 2 during the injection molding process of the lower shell 2, and the positioning member 4 is fixedly arranged on the bottom surface of the upper shell 1. Furthermore, a plurality of positioning grooves 7 can be provided on the upper surface of the lower shell 2, and the magnet 3 is fixed in the positioning groove 7, and an insertion space 71 is left between the magnet 3 and the notch of the positioning groove 7; as an optional scheme, this embodiment can select a bolt as the positioning member 4, and the bolt is fixedly connected to the upper shell 1, and when the upper shell 1 is connected to the lower shell 2, the positioning member 4, that is, the nut of the bolt, is inserted into the insertion space 71 of the positioning groove 7 and is magnetically connected to the magnet 3; different from the above embodiment, the magnet of this embodiment is arranged on the lower shell, and the positioning member is arranged on the upper shell.

[0049] by Figure 1 -9 is an example of an embodiment in which the positioning member 4 is configured as a bolt;

[0050] The seat assembly is installed specifically as follows: first, the magnet 3 is embedded in the positioning groove 7 of the upper shell 1 as an embedded part during the injection molding process of the upper shell 1, and a cushion layer 5 is fixed to the upper surface of the upper shell 1 by gluing, and the convex cap 13 of the upper shell 1 is in the avoidance groove 51 of the cushion layer 5; then the bolt is screwed into the threaded hole 22 of the lower shell 2, and the nut of the bolt protrudes from the upper surface of the lower shell 2; before installing the upper shell 1 and the lower shell 2, the outer cover 6 must be covered on the outer surface of the cushion layer 5 and the upper shell 1; then the nut of the bolt is aligned one by one with the insertion space 71 of the positioning groove 7, and the magnet 3 will automatically attract the nut into the insertion space 71. At this time, the fixing part 61 of the outer cover 6 is pressed between the upper shell 1 and the lower shell 2, and the inner side of the fixing part 61 is clamped between the first convex ring 11 and the protrusion 12.

[0051] When the outer cover 6 needs to be replaced, the upper shell 1 and the lower shell 2 can be separated by simply pulling the upper shell 1 to eliminate the magnetic force between the magnet 3 and the positioning member 4. After removing the upper shell 1, the outer cover 6 can be directly peeled off from the upper shell 1 and the cushion layer 5.

[0052] Specifically, the present invention also provides a chair, comprising the aforementioned easily detachable seat assembly.

[0053] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A chair seat assembly that is easy to disassemble, comprising an upper shell (1) and a lower shell (2) arranged at the bottom of the upper shell (1), wherein the upper shell (1) is configured to support a cushion layer, and is characterized by: The upper shell (1) and the lower shell (2) are detachably connected via a magnetic attraction assembly, wherein the magnetic attraction assembly comprises a magnet (3) and a positioning member (4) that is attracted to and cooperates with the magnet (3), wherein the magnet (3) is arranged on one of the upper shell (1) and the lower shell (2), and the positioning member (4) is arranged on the other of the upper shell (1) and the lower shell (2).

2. The easily disassembled chair seat assembly according to claim 1, wherein: The bottom surface of the upper shell (1) is provided with a plurality of positioning grooves (7), the magnet (3) is fixed in the positioning groove (7), and an insertion space (71) is left between the magnet (3) and the notch of the positioning groove (7); the positioning member (4) is fixedly arranged on the upper surface of the lower shell (2), and when the upper shell (1) is connected to the lower shell (2), the positioning member (4) is inserted into the insertion space and magnetically connected to the magnet (3).

3. The easily disassembled chair seat assembly according to claim 2, wherein: The positioning grooves (7) are arranged at intervals and circumferentially on the bottom surface of the upper shell (1).

4. The easily disassembled chair seat assembly according to claim 3, wherein: The upper shell (1) and the lower shell (2) are injection-molded from hard plastic, and the magnet (3) is pre-embedded in the positioning groove (7) during the injection-molding process of the upper shell (1).

5. The easily disassembled chair seat assembly according to claim 2, characterized in that: The upper surface of the lower shell (2) is provided with a threaded hole, and the positioning member (4) is a screw that matches the threaded hole; when the upper shell (1) is connected to the lower shell (2), the nut of the screw is inserted into the insertion space (71) of the positioning groove (7) and is magnetically connected to the magnet (3).

6. The easily disassembled chair seat assembly according to claim 2, characterized in that: The upper surface of the lower shell (2) is provided with a countersunk hole, and the positioning member (4) is a pin shaft that cooperates with the countersunk hole, with one end of the pin shaft cooperating with the countersunk hole; when the upper shell (1) and the lower shell (2) are connected, the other end of the pin shaft is inserted into the insertion space (71) of the positioning groove (7) and is magnetically connected to the magnet (3).

7. The easily disassembled chair seat assembly according to claim 1, characterized in that: A convex edge extends downwardly along the bottom edge of the upper shell (1), and the convex edge surrounds the edge of the upper shell to form a first convex ring (11). A flange extends upwardly along the upper surface edge of the lower shell (2), and the flange surrounds the edge of the lower shell to form a second convex ring (21). When the upper shell (1) and the lower shell (2) are connected, the second convex ring (21) and the first convex ring (11) are staggered, and the second convex ring (21) is located in the area enclosed by the first convex ring (11).

8. The easily disassembled chair seat assembly according to claim 7, characterized in that: A cushion layer (5) is glued to the top of the upper shell (1), and an outer cover (6) is covered on the outer surface of the cushion layer (5). The outer cover (6) covers the surface of the cushion layer (5), and the closing position of the outer cover forms a fixing portion (61); the fixing portion (61) is squeezed onto the bottom surface of the upper shell (1) by the second convex ring (21) after passing through the first convex ring (11), so that the fixing portion (61) is pressed between the upper shell (1) and the lower shell (2).

9. The easily disassembled chair seat assembly according to claim 8, characterized in that: The bottom surface of the upper shell (1) is provided with a plurality of raised portions (12) at intervals around the periphery, and a positioning groove (7) is formed on the raised portion (12), and the magnet (3) is fixed in the positioning groove (7); when the upper shell (1) and the lower shell (2) are connected, the second raised ring (21) is located between the first raised ring (11) and the raised portion (12), and the inner side of the fixing portion (61) is clamped between the first raised ring (11) and the raised portion (12).

10. The easily disassembled chair seat assembly according to claim 8, characterized in that: An elastic band is provided inside the inner edge of the fixing portion (61) of the outer cover (6) for preventing the outer cover (6) from sliding.

11. The easily disassembled chair seat assembly according to claim 9, characterized in that: A convex cap (13) is provided at a position on the upper surface of the upper shell (1) corresponding to the raised portion (12), the positioning groove (7) passes through the convex cap (13), and the magnet (3) is positioned in the convex cap (13); an avoidance groove (51) is provided at a corresponding position on the bottom surface of the soft cushion layer (5), and after the soft cushion layer (5) is combined with the upper shell (1), the convex cap (13) is located in the avoidance groove (51).

12. The easily disassembled chair seat assembly according to claim 8, characterized in that: A drawstring for preventing the outer cover (6) from sliding is provided inside the inner edge of the fixing portion (61) of the outer cover (6).

13. A seat, characterized in that: The invention comprises the easily disassembled chair seat assembly according to any one of claims 1 to 12.

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