CN215604374U - Stable telescopic stool - Google Patents

Abstract

The utility model discloses a stable telescopic stool, which comprises a stool surface, a telescopic mechanism and a stool bottom which are connected in sequence; the telescopic mechanism can be switched between an expansion state and a contraction state, and comprises a plurality of relatively movable connecting pieces, a fixing mechanism and a contraction supporting structure, wherein the fixing mechanism is arranged on the connecting pieces and can keep two adjacent connecting pieces in a mutually-far state; when the telescopic mechanism is in a contracted state, two adjacent connecting pieces are supported by the contracted supporting structure; according to the telescopic stool, due to the arrangement of the telescopic supporting structure, each connecting piece can be stably supported when the telescopic stool is in a fully contracted or semi-expanded state.

Description

Stable telescopic stool

Technical Field

The utility model belongs to the technical field of telescopic stools, and particularly relates to a stable telescopic stool.

Background

The stool is used as leisure furniture commonly used in life of people, and is widely applied to various occasions, such as furniture bedrooms, offices, laboratories, outdoor places and the like. The prior known stool has fixed overall dimension, large size, inconvenience in carrying for outdoor sports and lack of flexibility, so that a telescopic stool appears. The telescopic mechanism in the telescopic stool is of great importance to the telescopic stool, the telescopic stool needs to have reliable supporting force to support the telescopic stool after being stretched, and although the existing telescopic mechanism can realize the telescopic function, the supporting effect is not ideal, and the bearing capacity is poor.

Disclosure of Invention

The utility model provides a stable telescopic stool with high safety in order to overcome the defects of the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme: a stable telescopic stool comprises a stool surface, a telescopic mechanism and a stool bottom which are connected in sequence; the telescopic mechanism can be switched between an expansion state and a contraction state, and comprises a plurality of relatively movable connecting pieces, a fixing mechanism and a contraction supporting structure, wherein the fixing mechanism is arranged on the connecting pieces and can keep two adjacent connecting pieces in a mutually-far state; when the telescopic mechanism is in a contraction state, two adjacent connecting pieces are supported by the contraction supporting structure. After the plurality of connecting pieces are unfolded, the unfolded connecting pieces are fixed by using the fixing mechanism, so that the connecting pieces are in an unfolded state, a good supporting effect is provided for the unfolded connecting pieces, and the use reliability of the telescopic mechanism is ensured; and shrink bearing structure's setting, when making telescopic machanism be in complete contraction state or half contraction state (half expansion state promptly, the flexible bench of formation does not reach maximum height), can obtain shrink bearing structure's support to make can not produce relative activity between two adjacent connecting pieces, then make flexible bench overall structure more stable, the security is higher.

Furthermore, the contraction supporting structure comprises a third limiting part arranged on the connecting piece, a plane perpendicular to the axial lead of the connecting piece is used as a first reference surface, and the projection of the third limiting part on any connecting piece on the first reference surface is at least partially overlapped with the projection of another adjacent connecting piece close to one side of the stool bottom on the first reference surface. Through the arrangement of the structure, the two adjacent connecting pieces can not be separated due to self gravity, and the stability of the structure is ensured.

Furthermore, a seventh limiting part is arranged on the connecting piece, and when the telescopic mechanism is in a contraction state, at least part of the third limiting part on the connecting piece close to one side of the stool surface is positioned in the seventh limiting part on the other adjacent connecting piece close to one side of the stool bottom. Through the setting of above-mentioned structure for telescopic machanism is when the shrink state, and the upper surface of two adjacent connecting pieces can keep leveling or be close to leveling, and then when making the shrink state of telescopic stool, highly lower, overall structure's integrated level is higher, and the volume is littleer, portable.

Furthermore, the contraction supporting structure comprises a bearing convex part arranged on the connecting piece, a plane perpendicular to the axial lead of the connecting piece is used as a first reference plane, and the projection of the bearing convex part on any connecting piece on the first reference plane is at least partially overlapped with the projection of another adjacent connecting piece close to one side of the stool surface on the first reference plane. Through the arrangement, when the telescopic mechanism is in a semi-contraction state, the connecting piece above the telescopic mechanism can be supported by the bearing convex part on the connecting piece below the connecting piece, so that the stability of the structure is ensured, the telescopic stool is in any use height, the problems of deformation, side inclination and the like cannot occur, and the safety is higher.

Furthermore, the connecting piece is provided with a concave part, and when the telescopic mechanism is in a contraction state, the bearing convex part on the connecting piece close to one side of the stool bottom is at least partially positioned in the concave part on the other adjacent connecting piece close to one side of the stool surface. Through the structure, the telescopic stool is not interfered when being in a contraction state, and is smaller in overall size and more written.

Furthermore, the fixing mechanism comprises a first limiting structure for providing axial limiting for the connecting piece, and the first limiting structure comprises a first limiting part arranged on the connecting piece and a second limiting part matched with the first limiting part on the adjacent connecting piece. Utilize adjacent connecting piece to provide holding power for last connecting piece, make whole telescopic machanism more compact, increase telescopic machanism's structural strength, make telescopic machanism more firm when using.

Furthermore, the fixing mechanism further comprises a second limiting structure used for providing circumferential limiting for the connecting piece, the second limiting structure comprises a first inclined plane arranged on the first limiting part and a second inclined plane arranged on the second limiting part, and the first inclined plane is matched with the adjacent second inclined plane on the connecting piece. After the connecting structure is unfolded, the second inclined plane is arranged on the first inclined plane, the center of gravity of the first limiting portion is arranged at the bottom end of the first inclined plane under the mutual matching of the first inclined plane and the second inclined plane, the first limiting portion is prevented from being separated from the second limiting portion, and the connecting effect is improved.

Furthermore, the second limiting structure further comprises a first rotation stopping part arranged on the second limiting part and a second rotation stopping part matched with the first rotation stopping part on the adjacent connecting piece; further improve the spacing effect of circumference.

Furthermore, the fixing mechanism further comprises a third limiting structure for providing radial limiting for the connecting piece, and the third limiting structure comprises a fifth limiting part arranged on the connecting piece and a sixth limiting part matched with the fifth limiting part on the adjacent connecting piece. Prevent that the connecting piece from producing radial deformation for when the structure is more stable, can the lightweight, and realize radially spacing.

Furthermore, the anti-falling device also comprises an anti-falling mechanism used for keeping the telescopic stool in a contraction state, and the anti-falling mechanism comprises a fixing component used for locking the stool surface and the stool bottom mutually; the fixing component comprises a first anti-falling part arranged on the stool surface and a second anti-falling part matched with the first anti-falling part; and/or the anti-falling mechanism also comprises an anti-falling component for preventing the stool surface and the stool bottom from being away from each other; the anti-falling component comprises a third anti-falling part connected with the stool surface and a fourth anti-falling part matched with the third anti-falling part; and/or the anti-falling component comprises an upper connecting part arranged on the stool surface, a lower connecting part arranged on the stool bottom and a resetting part used for connecting the upper connecting part and the lower connecting part; and/or the anti-falling mechanism further comprises a sixth anti-falling part for blocking the movement of the connecting piece; the sixth anti-falling part is arranged on the stool bottom.

In conclusion, the telescopic stool disclosed by the utility model has the advantages that through the arrangement of the telescopic supporting structure, each connecting piece can be stably supported when the telescopic stool is in a completely contracted or semi-expanded state, so that the whole structure of the telescopic stool is more stable, the strength is higher, and the safety is higher.

Drawings

FIG. 1 is a schematic perspective view of the present invention in an unfolded state;

FIG. 2 is a partial perspective view of the connector of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

FIG. 4 is an enlarged view of the structure at B in FIG. 2;

FIG. 5 is a schematic view of a three-dimensional structure of two adjacent connectors of the present invention;

FIG. 6 is an enlarged view of the structure at C in FIG. 5;

FIG. 7 is a schematic perspective view of the present invention in a contracted state;

FIG. 8 is an enlarged view of the structure of FIG. 7 at D;

FIG. 9 is a perspective view of a third anti-separation portion according to the present invention;

FIG. 10 is a perspective view of a connector of the present invention having load bearing projections;

fig. 11 is an enlarged schematic view of fig. 10 at E.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The terms "first", "second", and the like, appearing in the present invention are for convenience of description only, to distinguish different constituent elements having the same name, and do not denote a sequential or primary-secondary relationship.

As shown in fig. 1, a stable telescopic stool comprises a stool surface 1, a telescopic mechanism and a stool bottom 2 which are connected in sequence; the stool surface 1 is connected with a connecting piece 3 at the top of the telescopic mechanism, and the stool bottom 2 is connected with a connecting piece 3 at the bottom of the telescopic mechanism; the telescopic mechanism comprises a plurality of relatively movable connecting pieces 3 and a fixing mechanism for keeping the telescopic mechanism in an unfolded state; 3 end to end of a plurality of connecting pieces, the connecting piece is the setting of ring form structure, a plurality of connecting pieces from last down diameter increases in proper order, make this telescopic machanism can switch between expansion state and contraction state, when per two adjacent connecting pieces all keep away from each other to when far-end, telescopic machanism is in the complete expansion state, and when per two adjacent connecting pieces all be close to each other to overlapping or most overlap, telescopic machanism is in the complete contraction state, two adjacent connecting pieces are in the state of relative shrink this moment.

As shown in fig. 2-4, in some embodiments, the securing mechanism includes a first limit formation for providing an axial limit for the connector 3 and a second limit formation for providing a circumferential limit for the connector 3; the first limiting mechanism comprises a first limiting part 31 arranged on the connecting piece 3 and a second limiting part 32 matched with the first limiting part 31 on the adjacent connecting piece 3; the first limiting part is formed by extending at least part of the inner wall of the connecting piece 3 outwards, and the second limiting part is formed by extending at least part of the outer wall of the connecting piece 3 outwards; when the telescopic mechanism is in the unfolding state, the second limiting part 32 is positioned above the first limiting part 31, and the first limiting part 31 plays an axial supporting role for the second limiting part 32, so that the previous connecting piece is prevented from shrinking into the next connecting piece, namely, the adjacent two connecting pieces are kept in a relatively unfolding state.

As shown in fig. 2 and 3, in some embodiments, a first active region 33 for allowing the second limiting portion 32 of the adjacent connecting member to move and a second active region 34 communicated with the first active region 33 are provided on the connecting member 3; at least part of the inner wall of the connecting piece extends outwards to form a first convex edge 35 and a second convex edge 36; at least part of the inner wall of the connecting piece extends outwards to form a third convex edge 37; the first convex edge, the second convex edge and the third convex edge are enclosed into an inverted U-shaped structure, and the first active area 33 is formed among the first convex edge, the second convex edge and the third convex edge; the second active region 34 is located above the first limiting portion 31 and is communicated with the first active region; the second limiting part 32 can move in the first active area and the second active area on the adjacent connecting pieces, so that the telescopic mechanism can be conveniently switched between the expansion state and the contraction state.

As shown in fig. 3 and 4, in some embodiments, the second position-limiting structure includes a first inclined surface 311 disposed on the first position-limiting portion 31 and a second inclined surface 322 disposed on the second position-limiting portion 32, wherein the first inclined surface 311 is inclined from top to bottom, and a side close to the first active area is higher and a side far away from the first active area is lower; the first inclined plane 311 is matched with the second inclined plane 322 on the adjacent connecting piece 3, so that when the first inclined plane 311 is abutted against the second inclined plane due to external force, downward external force can provide a force in the circumferential direction for the connecting piece under the most action of the two inclined planes, the force enables the second limiting part 32 on the connecting piece to have a trend of being far away from the first movable area, then the adjacent two connecting pieces can be kept in an unfolded state, the accidental contraction due to twisting can not occur, and the safety is higher.

As shown in fig. 3-6, in some embodiments, the second limiting structure further includes a first rotation-stopping portion 321 disposed on the second limiting portion 32 and a second rotation-stopping portion 312 matched with the first rotation-stopping portion 321 on the adjacent connecting member 3, and through interference between the second rotation-stopping portion 312 and the first rotation-stopping portion 321 on the adjacent connecting member, even if the connecting member rotates due to the action of the circumferential force, so that the second limiting portion 32 approaches the first active region, the first rotation-stopping portion 321 on the second limiting portion 32 is blocked by the second rotation-stopping portion 312, so that the second limiting portion 32 cannot enter the first active region 33, thereby further ensuring that the two adjacent connecting members can stably maintain the unfolded state, and the use is safer and more stable.

As shown in fig. 3-6, in some embodiments, the fixation mechanism further comprises a third stop structure for providing radial stop for said connector 3, the third position-limiting structure comprises a fifth position-limiting part 323 arranged on the connecting piece 3 and a sixth position-limiting part 313 matched with the fifth position-limiting part on the adjacent connecting piece 3, the fifth limiting part is arranged at the bottom of the second limiting part 32 and formed by downward extending of at least part of the surface of the outer edge of the second limiting part 32, the sixth limiting part is arranged on the first limiting part 31 and formed by upward extending of at least part of the surface of the first limiting part 31 on one side close to the center of the connecting ring, the sixth limiting part, the inner wall of the connecting piece and the second rotation stopping part 312 are matched with each other to form a groove structure in a surrounding mode on the first limiting part 31, and the fifth limiting part can be just embedded into the groove structure, so that the connecting piece cannot deform radially.

As shown in fig. 1, in some embodiments, an anti-falling mechanism for keeping the retractable stool in a retracted state is further provided, and the anti-falling mechanism includes a fixing component for locking the stool surface 1 and the stool bottom 2 with each other; this fixed subassembly including locate first anticreep portion 91 on bench face 1 and with first anticreep portion complex second anticreep portion 92, second anticreep portion be rotatable coupling in buckle on the bench bottom, first anticreep portion is the annular convex part, presses back on the bench bottom as the bench face, and the buckle of up overturning is detained on the annular convex part, under the cooperation of buckle and annular convex part, takes off portion mutually supporting with the third anti-escape and plays fixed action to the bench face, fixes the bench face on the bench bottom, avoids flexible bench to scatter in handling.

As shown in fig. 7-9, in some embodiments, the anti-separation mechanism further includes an anti-separation component for preventing the stool surface 1 and the stool bottom 2 from separating away from each other; the anti-falling component comprises a third anti-falling part 93 arranged on the stool surface and a fourth anti-falling part 94 matched with the third anti-falling part; the bench surface 1 is further provided with a fifth anti-disengaging part 95, the third anti-disengaging part 93 is arranged in a cylindrical structure, the top end of the third anti-disengaging part is provided with a first buckling part 931 used for being in buckling connection with the fifth anti-disengaging part, the third anti-disengaging part is further provided with a limiting ring 933 matched with the fifth anti-disengaging part, the bench bottom is provided with a fourth anti-disengaging part 94 used for fixing the third anti-disengaging part, the fourth anti-disengaging part is in a tubular structure, when the telescopic bench is folded, the bench surface covers the bench bottom, the bottom of the third anti-disengaging part 93 is inserted into the fourth anti-disengaging part, and the second buckling part 932 at the bottom of the third anti-disengaging part and the fourth anti-disengaging part form interference fit, so that the friction force between the third anti-disengaging part and the fourth anti-disengaging part is increased, and the telescopic bench is kept in a shrinking state; the bottom and the top of the third anti-stripping part are provided with grooves, so that the third anti-stripping part is convenient to deform when being matched with the fifth anti-stripping part and the fourth anti-stripping part.

In other embodiments, the third anti-separation portion and the fourth anti-separation portion may be replaced by other structures, such as the engagement between the inserted link and the plug bush, and the separation between the inserted link and the plug bush is achieved by increasing the friction force, for example, rubber is mounted on the outer wall of the inserted link and the inner wall of the plug bush; certainly, a magnet can also be adopted, and the anti-falling of the stool surface and the stool bottom is realized by utilizing the suction force of the magnet.

As shown in fig. 8, in some embodiments, the stool top 1 is provided with an upper connecting portion 12, the stool bottom 2 is provided with a lower connecting portion 22, and the upper connecting portion 12 is connected to the lower connecting portion 22 through a restoring member 90, which is a spring, and in other embodiments, the restoring member may be made of other elastic materials.

As shown in fig. 7, in some embodiments, the retaining mechanism further includes a sixth retaining portion 96 for blocking the movement of the connector 3; the sixth anti-falling part 96 is disposed on the stool bottom, and in this embodiment, the sixth anti-falling part is similar to a buckle structure and can clamp the innermost connecting member 3 when the telescopic stool is contracted; the sixth anti-falling part is provided with an inclined plane, so that at least part of the cross section of the sixth anti-falling part is triangular, and the sixth anti-falling part is convenient to be clamped and separated from the lower edge of the first transition piece.

In other embodiments, the sixth anti-slip part may be another structure capable of connecting with a connecting member, such as a telescopic rod that is extended and retracted by a spring, and a slot that is engaged with the telescopic rod.

As shown in fig. 10-11, in some embodiments, the telescopic mechanism further comprises a contracting support structure provided on the connecting members 3, and when the telescopic mechanism is in a contracted state, two adjacent connecting members 3 are supported by the contracting support structure. The contraction supporting structure comprises a third limiting part 38 arranged on the connecting piece 3, a plane perpendicular to the axial lead of the connecting piece 3 is used as a first reference plane, and the projection of the third limiting part 38 on any connecting piece 3 on the first reference plane is at least partially overlapped with the projection of another connecting piece 3 adjacent to one side of the stool bottom 2 on the first reference plane. That is, after the expansion joint is contracted, the upper edge of the lower connecting member 3 can be abutted against the third limiting portion 38 on the upper connecting member 3, thereby playing a supporting role.

As shown in fig. 10 to 11, in some embodiments, the connecting member 3 is provided with a seventh position-limiting portion 49, and a plurality of seventh position-limiting portions are uniformly arranged along the circumferential direction of the connecting member 3; when the telescopic mechanism is in a contracted state, the third limiting part 38 on the connecting piece 3 close to one side of the stool surface 1 is at least partially positioned in the seventh limiting part 49 on the other connecting piece 3 adjacent to one side of the stool bottom 2.

As shown in fig. 10, in some embodiments, the retractable support structure includes a bearing protrusion 30 disposed on the connecting members 3, and a plane perpendicular to the axial line of the connecting members 3 is used as a first reference plane, and a projection of the bearing protrusion 30 on any one connecting member 3 on the first reference plane at least partially overlaps with a projection of another connecting member 3 adjacent to one side of the stool surface 1 on the first reference plane. The bearing convex part 30 not only plays a role of supporting between two adjacent connecting pieces 3 when the utility model is completely contracted, but also plays a role of supporting between two adjacent connecting pieces 3 because the utility model can be completely expanded or incompletely expanded according to requirements (the contracted state can also be divided into the completely contracted state and the incompletely contracted state), the completely expanded state is that 32 on all the connecting pieces 3 are mutually supported by interference with 31 on the adjacent connecting pieces 3, and the incompletely expanded state is that 32 on part of the connecting pieces 3 are mutually supported by interference with 31 on the adjacent connecting pieces 3, so that the telescopic stools with different heights can be expanded according to requirements; in this embodiment, the load bearing projection 30 is located on the inner surface of the connecting member 3.

As shown in fig. 10, in some embodiments, the connecting member 3 is provided with a plurality of recessed portions 48, the recessed portions are formed by at least part of the surface of the lower edge of the connecting member being recessed inwards, the plurality of recessed portions are uniformly arranged along the circumferential direction of the connecting member, and the plurality of recessed portions and the plurality of second limiting portions 32 are sequentially arranged in a staggered manner. When the telescopic mechanism is in a contraction state, the bearing convex part 30 on the connecting piece 3 close to one side of the stool bottom 2 is at least partially positioned in the concave part 48 on the other connecting piece 3 adjacent to one side of the stool surface 1.

Any embodiment of the utility model can be taken as an independent technical scheme, and can also be combined with other embodiments. All patents and publications mentioned in the specification of the utility model are indicative of the techniques disclosed in the art to which this invention pertains and are intended to be applicable. All patents and publications cited herein are hereby incorporated by reference to the same extent as if each individual publication was specifically and individually indicated to be incorporated by reference. The utility model herein may be practiced in the absence of any element or elements, limitation or limitations, which limitation or limitations is not specifically disclosed herein. The terms and expressions which have been employed herein are used as terms of description and not of limitation, and there is no intention in the use of such terms and expressions of excluding any equivalents of the features shown and described, but it is recognized that various modifications and changes may be made within the scope of the utility model and the claims which follow. It is to be understood that the embodiments described herein are examples and features of some embodiments and that modifications and variations may be made by one of ordinary skill in the art in light of the teachings of this disclosure, and are to be considered within the purview of this disclosure and scope of the appended claims and their equivalents.

Claims (9)

1. A stable telescopic stool comprises a stool surface (1), a telescopic mechanism and a stool bottom (2) which are connected in sequence; the method is characterized in that: the telescopic mechanism can be switched between an expansion state and a contraction state, and comprises a plurality of relatively movable connecting pieces (3), a fixing mechanism and a contraction supporting structure, wherein the fixing mechanism is arranged on the connecting pieces (3), and can keep two adjacent connecting pieces (3) in a mutually-separated state; when the telescopic mechanism is in a contracted state, two adjacent connecting pieces (3) are supported by the contracted supporting structure;

the contraction supporting structure comprises a bearing convex part (30) arranged on the connecting piece (3), a plane perpendicular to the axial lead of the connecting piece (3) is used as a first reference surface, and the projection of the bearing convex part (30) on any connecting piece (3) on the first reference surface is at least partially overlapped with the projection of another adjacent connecting piece (3) close to one side of the stool surface (1) on the first reference surface.

2. A stable, telescoping stool as claimed in claim 1, wherein: the contraction supporting structure comprises a third limiting part (38) arranged on the connecting piece (3), a plane perpendicular to the axial lead of the connecting piece (3) is used as a first reference surface, and the projection of the third limiting part (38) on any connecting piece (3) on the first reference surface is at least partially overlapped with the projection of another adjacent connecting piece (3) close to one side of the stool bottom (2) on the first reference surface.

3. A stable, telescoping stool as claimed in claim 2, wherein: and a seventh limiting part (49) is arranged on the connecting piece (3), and when the telescopic mechanism is in a contraction state, at least part of the third limiting part (38) on the connecting piece (3) close to one side of the stool surface (1) is positioned in the seventh limiting part (49) on the other adjacent connecting piece (3) close to one side of the stool bottom (2).

4. A stable, telescoping stool as claimed in claim 1, wherein: the stool is characterized in that a concave part (48) is arranged on the connecting piece (3), and when the telescopic mechanism is in a contraction state, the bearing convex part (30) on the connecting piece (3) close to one side of the stool bottom (2) is at least partially positioned in the concave part (48) on the other adjacent connecting piece (3) close to one side of the stool surface (1).

5. A stable, telescoping stool as claimed in claim 1, wherein: the fixing mechanism comprises a first limiting structure used for providing axial limiting for the connecting piece (3), and the first limiting structure comprises a first limiting part (31) arranged on the connecting piece (3) and a second limiting part (32) matched with the first limiting part (31) on the adjacent connecting piece (3).

6. A stable, telescoping stool as claimed in claim 5, wherein: the fixing mechanism further comprises a second limiting structure used for providing circumferential limiting for the connecting piece (3), the second limiting structure comprises a first inclined surface (311) arranged on the first limiting portion (31) and a second inclined surface (322) arranged on the second limiting portion (32), and the first inclined surface (311) is matched with the adjacent second inclined surface (322) on the connecting piece (3).

7. A stable, telescoping stool as claimed in claim 6, wherein: the second limiting structure further comprises a first rotation stopping part (321) arranged on the second limiting part (32) and a second rotation stopping part (312) matched with the first rotation stopping part (321) on the adjacent connecting piece (3).

8. A steady telescopic stool according to any one of claims 5 to 7, characterised in that: the fixing mechanism further comprises a third limiting structure used for providing radial limiting for the connecting piece (3), and the third limiting structure comprises a fifth limiting part (323) arranged on the connecting piece (3) and a sixth limiting part (313) matched with the fifth limiting part (323) on the adjacent connecting piece (3).

9. A stable, telescoping stool as claimed in claim 1, wherein: the anti-falling mechanism is used for keeping the telescopic stool in a contraction state and comprises a fixing assembly used for locking the stool surface (1) and the stool bottom (2) mutually, and the fixing assembly comprises a first anti-falling part (91) arranged on the stool surface (1) and a second anti-falling part (92) matched with the first anti-falling part (91); and/or the anti-falling mechanism further comprises an anti-falling component for preventing the stool surface (1) and the stool bottom (2) from being away from each other, and the anti-falling component comprises a third anti-falling part (93) connected with the stool surface (1) and a fourth anti-falling part (94) matched with the third anti-falling part (93); and/or the anti-falling component comprises an upper connecting part (12) arranged on the stool surface (1), a lower connecting part (22) arranged on the stool bottom (2) and a resetting part (90) used for connecting the upper connecting part and the lower connecting part; and/or the anti-falling mechanism further comprises a sixth anti-falling part (96) for blocking the connecting piece (3) to move, and the sixth anti-falling part (96) is arranged on the stool bottom (2).

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