A retractable stool with a sturdy structure

Abstract

The present invention discloses a retractable stool with a firm structure, comprising a plurality of connecting members connected end to end, wherein two adjacent connecting members can move relatively to each other, and the connecting members are provided with a fixing mechanism for keeping the plurality of connecting members in an expanded state; when the plurality of connecting members are expanded, the fixed mechanism is used to fix the expanded connecting members so that the connecting members are in the expanded state, thereby providing a good supporting effect for the expanded connecting members and ensuring the reliability of the use of the retractable mechanism.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a telescopic stool with a firm structure. Background Art

[0002] Stools are leisure furniture that people often use in their daily lives and are widely used in many occasions, such as bedrooms, offices, laboratories, and outdoor places. Currently, the known stools have fixed dimensions and are large in size. They are not convenient to carry for outdoor sports and lack flexibility, so telescopic stools have emerged. The telescopic mechanism in a telescopic stool is crucial for a telescopic stool. After the telescopic stool is stretched, it needs a reliable support force to support it. Although the existing telescopic mechanism can achieve the telescopic function, its support effect needs to be improved, which reduces the load-bearing capacity of the telescopic stool. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a telescopic stool with a firm structure.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a retractable stool with a sturdy structure, comprising a stool surface, a base and a retractable mechanism for connecting the stool surface and the base; the retractable mechanism can switch between an expanded state and a contracted state, and the retractable mechanism comprises a plurality of relatively movable connecting parts and a fixing mechanism arranged on the connecting parts, and the fixing mechanism is used to keep the retractable mechanism in the expanded state; when the plurality of connecting parts are expanded, the expanded connecting parts are fixed by the fixing mechanism, so that the connecting parts are in the expanded state, providing a good support effect for the expanded connecting parts, and ensuring the reliability of the use of the retractable mechanism.

[0005] Furthermore, the fixing mechanism includes a first limiting structure for providing axial limiting for the connecting member; when the multiple connecting members are unfolded, the first limiting structure is used to provide axial limiting effect on the connecting member, provide supporting force for the unfolded connecting member, effectively fix the connecting member in a specified position, and enable the multiple connecting members to cooperate with each other to provide stable supporting force, thereby ensuring the reliability of the use of the telescopic mechanism.

[0006] Furthermore, the first limiting structure includes a third protrusion arranged on the connecting member and a second protrusion matching the third protrusion on the adjacent connecting member; after the telescopic mechanism is unfolded, the second protrusion on the connecting member is on the third protrusion on the adjacent connecting member, and the third protrusion is used to provide supporting force for the connecting member, so that the telescopic mechanism is kept in the unfolded state, thereby increasing the reliability of the use of the telescopic mechanism; the adjacent connecting member is used to provide supporting force for the previous connecting member, so that the entire telescopic mechanism is more compact, the structural strength of the telescopic mechanism is increased, and the telescopic mechanism is more stable when in use.

[0007] Furthermore, the fixing mechanism also includes a second limiting structure for providing circumferential limiting for the connecting member; when the multiple connecting members are unfolded, the second limiting structure is used to provide circumferential limiting for the connecting member, so that the connecting member cannot rotate, thereby ensuring that the Durr protrusion is on the third convex edge, effectively fixing the connecting member at a specified position, and making the multiple connecting members cooperate with each other to provide stable supporting force, thereby ensuring the reliability of the telescopic mechanism.

[0008] Furthermore, the second limiting structure includes a first inclined surface provided on the third convex edge and a second inclined surface provided on the second protrusion, and the first inclined surface matches with the second inclined surface on the adjacent connecting member; after the connecting structure is unfolded, the second protrusion is at the top of the third convex edge, and the second inclined surface is placed on the first inclined surface, and with the mutual cooperation of the first inclined surface and the second inclined surface, the center of gravity of the second protrusion is placed at the bottom end of the first inclined surface to prevent the second protrusion from falling out of the third convex edge, thereby improving the connection effect between the second protrusion and the third convex edge.

[0009] Furthermore, the second limiting structure also includes a third connecting portion provided on the second protrusion and a first protrusion cooperating with the third connecting portion on the adjacent connecting member; the first protrusion cooperates with the third flange to provide a limiting effect for the second protrusion, further improving the matching effect between the second protrusion and the third flange, preventing the second protrusion from falling out of the third flange, and improving the limiting effect of the third flange on the second protrusion.

[0010] Furthermore, the fixing mechanism also includes a third limiting structure for providing radial limiting for the connecting member; the third limiting structure cooperates with the first limiting structure and the second limiting structure to provide limiting effect for the connecting member from multiple directions, thereby ensuring the stability of the connecting member cooperation, avoiding dislocation and collapse of the connecting member during use, and improving the stability of the telescopic mechanism.

[0011] Furthermore, the third limiting structure includes a third protrusion arranged on the connecting member and a surrounding plate that cooperates with the third protrusion on the adjacent connecting member; after the connecting member is unfolded, the third protrusion is at the top of the third flange, and the surrounding plate is used to increase the depth of the third flange, so that the protrusion is not easy to fall out of the third flange, so as to fix the second protrusion; under the action of the surrounding plate, the second protrusion is limited from multiple angles, and the second protrusion can only be on the third flange, which greatly improves the cooperation effect between the second protrusion and the point flange, and improves the stability of the unfolding of the telescopic mechanism.

[0012] Furthermore, the telescopic mechanism also includes a limiting member for preventing two adjacent connecting members from separating from each other.

[0013] Furthermore, the connecting member is provided with a first movable area for movement of the adjacent connecting member; the first movable area provides reserved space for movement of the connecting member, so that the connecting member has sufficient range of movement to realize the telescopic operation of the telescopic mechanism.

[0014] The present invention has the following advantages: when multiple connecting members are unfolded, the unfolded connecting members are fixed by a fixing mechanism, so that the connecting members are in an unfolded state, a good supporting effect is provided for the unfolded connecting members, and the reliability of the telescopic mechanism is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 The structure of the connecting member in the present invention is shown in FIG. Figure 1 ;

[0017] Figure 3 for Figure 2 The enlarged view of F in the figure;

[0018] Figure 4 for Figure 2 The enlarged view of G in the figure;

[0019] Figure 5 The diagram is a schematic diagram of the cooperation of the two connecting parts when they are folded up in the present invention. Figure 1 ;

[0020] Figure 6 for Figure 5 The enlarged view of H in the figure;

[0021] Figure 7 Schematic diagram of the cooperation of two connecting parts when they are unfolded in the present invention Figure 1 ;

[0022] Figure 8 for Figure 7 The enlarged view at position I in FIG.

[0023] Fig. 9 The structure of the connecting member in the present invention is shown in FIG. Figure 2 ;

[0024] Fig.10 for Fig. 9 A in the enlarged view;

[0025] Fig.11 is a cross-sectional view of the connecting member in the present invention;

[0026] Fig.12 for Fig.11 The enlarged view of point B in the figure;

[0027] Fig.13 for Fig.11The enlarged view of point C in the figure;

[0028] Fig.14 The diagram is a schematic diagram of the cooperation of the two connecting parts when they are folded up in the present invention. Figure 2 ;

[0029] Fig.15 for Fig.14 The enlarged view of point D in the figure;

[0030] Fig.16 Schematic diagram of the cooperation of two connecting parts when they are unfolded in the present invention Figure 2 ;

[0031] Fig.17 for Fig.16 Enlarged view of point E in FIG. DETAILED DESCRIPTION

[0032] like Figure 1-17 As shown, a retractable stool with a firm structure comprises a stool surface 1, a base 2 and a retractable mechanism for connecting the stool surface 1 and the base 2; the retractable mechanism can switch between an expanded state and a retracted state, the retractable mechanism comprises a plurality of relatively movable connecting members 3 and a fixing mechanism arranged on the connecting members 3, the fixing mechanism being used to keep the retractable mechanism in an expanded state; a plurality of connecting members 3 are connected end to end, the connecting members are arranged in a circular ring structure, the diameters of the plurality of connecting members increase successively from top to bottom, and two adjacent connecting members 3 can move relatively, a first movable area 370 for allowing adjacent connecting members to move is provided on the connecting member, and a fixing mechanism for keeping a plurality of connecting members 3 in an expanded state is provided on the connecting member 3; the first movable area is the area between the first flange 320 and the second flange 330 formed on the inner wall of the connecting ring, the fixing mechanism comprises a fixing mechanism for providing an axis for the connecting member 3 A first limiting structure for limiting the position in the axial direction and a second limiting structure for providing circumferential limiting for the connecting member 3, the first limiting mechanism includes a third flange 35 arranged on the side wall of the second flange and a second protrusion 39 matching the third flange on the adjacent connecting member 3, when the second protrusion 39 is located above the third flange 35 on the adjacent connecting member and the two are in conflict with each other, the third flange will provide an upward supporting force for the second protrusion to prevent the upper connecting member from shrinking into the next connecting member, so that the two adjacent connecting members maintain a relatively expanded state, and a second active area 32 is provided above the third flange, the first active area and the second active area are vertically arranged and connected to each other, and the second protrusion can move in the first active area and the second active area to facilitate the switching of the telescopic mechanism between the expanded state and the contracted state.

[0033] Furthermore, the second limiting structure includes a first inclined surface 352 provided on the third convex edge 35 and a second inclined surface 392 provided on the second protrusion 29, the first inclined surface is inclined from top to bottom, the side close to the first active area is higher, and the side away from the first active area is lower; the first inclined surface is matched with the second inclined surface on the adjacent connecting member 3, so that when the first inclined surface and the second inclined surface collide due to external force, the downward external force will give the connecting member a circumferential force under the maximum action of the two inclined surfaces, and this force makes the second protrusion on the connecting member have a tendency to move away from the first active area, thereby enabling the two adjacent connecting members to remain in the expanded state and not accidentally shrink due to twisting, and the second The limiting structure also includes a third connecting portion 393 provided on the second protrusion and a first protrusion 353 that cooperates with the third connecting portion on the adjacent connecting member 3. Through the cooperation between the first protrusion and the third connecting portion on the adjacent connecting member, even if the connecting member rotates due to the action of the circumferential force, causing the second protrusion to approach the first active area, the third connecting portion 393 on the second protrusion will be blocked by the first protrusion 353, further ensuring that the two adjacent connecting members can stably maintain the expanded state, making it safer and more stable to use; in other embodiments, the third connecting portion 393 may not be provided, and the purpose of circumferential limitation can be achieved only by the cooperation between the end of the second protrusion 39 and the first protrusion 353.

[0034] The second protrusion on the upper connecting member is embedded in the first active area of ​​the next connecting member, so that multiple connecting members are connected end to end to form a match; when the telescopic stool is contracted, the second protrusion of the upper connecting member is in the first active area of ​​the next connecting member, and the stool surface is directly pulled upward. After the second protrusion moves to the top of the first active area, the stool surface is rotated, and the stool surface drives the connecting member to rotate. The second protrusion rotates with the connecting member and enters one end of the second active area, pressing the stool surface downward. The bottom of the second protrusion is on the third convex edge. With the mutual cooperation of the third inclined surface and the third convex edge, the center of gravity of the second protrusion is placed at the bottom end of the third inclined surface to prevent the second protrusion from falling off from the third convex edge. The first protrusion blocks the second protrusion, preventing the user from twisting the stool surface while sitting on it and driving the stool surface to rotate and push the second protrusion out from the third protrusion, effectively ensuring the reliability of the telescopic stool and preventing the telescopic stool from being retracted during use; when the telescopic stool needs to be folded up, the stool surface is pulled upward, and the stool surface drives the connecting piece to move upward, so that the connecting piece at the top is disengaged from the third protrusion on the bottom connecting piece, and the stool surface is rotated to conveniently transfer the second protrusion into the first active area, and the stool surface is pushed downward, and the stool surface pushes the connecting piece to move downward, pressing the stool surface directly on the base so that the telescopic stool can be folded up.

[0035] A limiting member is provided on the side wall of the connector, and the limiting member is a long strip structure 350. The connector is also provided with a fourth flange 3100 that cooperates with the limiting member, and the fourth flange is provided on the inner wall of the connector. The limiting member is laterally arranged to increase the contact area between the limiting member and the fourth flange. When the second protrusion is opposite to the first active area, the second groove is opposite to the limiting member. After the second protrusion moves to the bottom of the first active area, the limiting member moves to the bottom of the second groove. Under the action of the limiting member, the connector is prevented from detaching from the connected connector when moving downward, thereby ensuring the reliability of the connection between the connectors.

[0036] The connector is provided with a second connector 340 and a third active area 390 for guiding the second connector. The second connector is an "M"-shaped structure. The width of the third active area is greater than that of the second connector. The second connector can move circumferentially in the third active area to avoid the second connector from hindering the rotation of the connector. The width of the second connector is greater than that of the first active area, so that the second connector cannot be inserted into the first active area. Therefore, during assembly, the connection between the connectors can only be completed after the second connector is rotated to the position of the third active area and the second protrusion is aligned with the position of the first active area, thereby realizing blind connection between the connectors, reducing the difficulty of connection between the connectors, improving assembly efficiency, and further improving production efficiency.

[0037] The fixing mechanism also includes a third limiting structure for providing radial limiting for the connecting member 3, the third limiting structure includes a third protrusion 391 provided on the connecting member and a surrounding plate 351 cooperating with the third protrusion on the adjacent connecting member, the third protrusion is provided at the bottom of the second protrusion 39, and is formed by extending downward from at least part of the surface of the outer edge of the second protrusion, the surrounding plate is provided on the third flange 35, and is formed by extending upward from at least part of the surface of the third flange on the side close to the center of the connecting ring, the surrounding plate, the inner wall of the connecting member and the first protrusion 353 cooperate with each other to form a groove structure on the third flange, and the third protrusion can be just embedded in the groove structure, so that when the telescopic mechanism is in the expanded state, the third protrusion is just embedded in the groove structure on the adjacent connecting member, so that the connecting member cannot undergo radial deformation, and then the two adjacent connecting members are stably maintained in the expanded state, and the structure is more stable and safe.

[0038] The third protrusion on the upper connecting member is embedded in the first active area of ​​the next connecting member, so that multiple connecting members are connected end to end to form a match; when the telescopic stool is retracted, the second protrusion of the upper connecting member is in the first active area of ​​the next connecting member, and the stool surface is directly pulled upward. After the second protrusion moves to the top of the first active area, the stool surface is rotated, and the stool surface drives the connecting member to rotate. The second protrusion enters one end of the second active area with the rotation of the connecting member, presses the stool surface downward, and the bottom of the third protrusion is embedded in the third convex edge, connecting the second protrusion to the second active area; the enclosure plate blocks the third protrusion to prevent the user from twisting the stool surface when sitting on it and driving the stool surface to rotate. The third protrusion is pushed out from the third convex edge, and at the same time, under the setting of the enclosure, the third protrusion is blocked from multiple surfaces to prevent the third protrusion from moving out from the side wall of the third convex edge after the connecting piece is deformed, effectively ensuring the reliability of the telescopic stool and preventing the telescopic stool from shrinking during use; when the telescopic stool needs to be folded up, the stool surface is pulled upwards, and the stool surface drives the connecting piece to move upwards, so that the connecting piece at the top is disengaged from the third convex edge on the bottom connecting piece, and the stool surface is rotated to conveniently transfer the second protrusion into the first active area, and the stool surface is pushed downwards, and the stool surface pushes the connecting piece to move downwards, and the stool surface is directly pressed on the base, so that the telescopic stool can be folded up.

[0039] A limit piece 360 ​​is provided on the side wall of the connecting piece. The limit piece is a trapezoidal structure. The connecting piece is also provided with a second groove 380 that cooperates with the limit piece. The second groove is provided on the inner wall of the connecting piece. The limit piece is longitudinally arranged to increase the thickness of the limit piece in the force direction, thereby improving the supporting effect of the limit piece on the connecting piece, thereby increasing the connection effect between the two connecting pieces, and preventing the top connecting piece from detaching from the bottom connecting piece when the telescopic stool is folded; when the second protrusion is opposite to the first active area, the second groove is opposite to the limit piece. After the second protrusion moves to the bottom of the first active area, the limit piece moves to the bottom of the second groove. Under the action of the limit piece, the connecting piece is prevented from detaching from the connected connecting piece when moving downward, thereby ensuring the reliability of the connection between the connecting pieces.

[0040] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

Claims

1. A retractable stool with a firm structure, comprising a stool surface (1), a base (2) and a retractable mechanism for connecting the stool surface (1) and the base (2); characterized in that: The telescopic mechanism can be switched between an expanded state and a contracted state, and comprises a plurality of relatively movable connecting members (3) and a fixing mechanism arranged on the connecting members (3), the fixing mechanism being used to keep the telescopic mechanism in the expanded state; The fixing mechanism comprises a first limiting structure for providing axial limiting for the connecting member (3); The first limiting structure comprises a third convex edge (35) provided on the connecting member (3) and a second convex block (39) matched with the third convex edge (35) on the adjacent connecting member (3); The fixing mechanism further comprises a second limiting structure for providing circumferential limiting for the connecting member (3); The second limiting structure comprises a first inclined surface (352) provided on the third convex edge (35) and a second inclined surface provided on the second protrusion, wherein the first inclined surface (352) matches with a second inclined surface (392) on an adjacent connecting member (3); The second limiting structure further comprises a third connecting portion (393) provided on the second protrusion (39) and a first protrusion (353) matched with the third connecting portion (393) on the adjacent connecting member (3); The fixing mechanism further comprises a third limiting structure for providing radial limiting for the connecting member (3); The third limiting structure comprises a third protrusion (391) provided on the connecting member (3) and a surrounding plate (351) matched with the third protrusion (391) on the adjacent connecting member (3); A plurality of connecting members (3) are connected end to end, the connecting members are arranged in a circular ring structure, and the diameters of the plurality of connecting members increase from top to bottom; a first movable area (370) for allowing adjacent connecting members to move is provided on the connecting members, the first movable area is an area between a first convex edge (320) and a second convex edge (330) formed on the inner wall of the connecting ring; a second movable area (32) is provided above the third convex edge, the first movable area and the second movable area are arranged perpendicular to each other and are connected, and the second convex block can move in the first movable area and the second movable area, so that the telescopic mechanism can be switched between an expanded state and a retracted state; Through the cooperation between the first protrusion and the third connection part on the adjacent connection member, even if the connection member rotates due to the circumferential force, causing the second protrusion to approach the first active area, the third connection part (393) on the second protrusion will be blocked by the first protrusion (353), and the two adjacent connection members can stably maintain the expanded state; The third protrusion is arranged at the bottom of the second protrusion (39), and is formed by extending downward from at least part of the surface of the outer edge of the second protrusion. The enclosure is arranged on the third flange (35), and is formed by extending upward from at least part of the surface of the third flange on the side close to the center of the connecting ring. The enclosure, the inner wall of the connecting piece and the first protrusion (353) cooperate with each other to form a groove structure on the third flange, and the third protrusion can be embedded in the groove structure, so that when the telescopic mechanism is in the expanded state, the third protrusion is embedded in the groove structure on the adjacent connecting piece, so that the connecting piece cannot undergo radial deformation, and then the two adjacent connecting pieces are stably maintained in the expanded state.

2. A structurally strong telescopic stool according to claim 1, characterized in that: The telescopic mechanism also includes a limiting member for preventing two adjacent connecting members (3) from being separated from each other.

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