CN108185692B

CN108185692B - Tilting mechanism and furniture

Info

Publication number: CN108185692B
Application number: CN201810159702.2A
Authority: CN
Inventors: 陈德昌
Original assignee: Hangzhou Dechang Hardware & Furniture Co ltd
Current assignee: Hangzhou Dechang Hardware & Furniture Co ltd
Priority date: 2018-02-26
Filing date: 2018-02-26
Publication date: 2023-08-15
Anticipated expiration: 2038-02-26
Also published as: CN108185692A

Abstract

The application discloses a turnover mechanism and furniture, wherein the turnover mechanism comprises: the fixing seat is provided with a first limiting structure and a second limiting structure; the rotating frame is rotatably arranged on the fixed seat; the unfolding positioning piece comprises a first positioning part; the folding positioning piece comprises a second positioning part; the control assembly is used for driving the unfolding positioning piece and the folding positioning piece to move; the elastic resetting piece is used for resetting the control assembly when the control assembly is not subjected to external force. According to the application, after the turnover, the limit positioning function is realized through the cooperation of the second limit structure and the second positioning part, so that after the rotating frame rotates to a fixed angle, the damage to a panel or other parts caused by excessive turnover or the turnover of furniture caused by the change of the gravity center after the turnover is avoided, the stability of the product is improved, and the service life of the product is prolonged; the turnover mechanism can automatically enter a locking state after being turned over, so that the rotating frame can not be turned down and unfolded suddenly under the action of external force, and the safety of a user is ensured.

Description

Tilting mechanism and furniture

Technical Field

The application relates to the field of furniture, in particular to a turnover mechanism and furniture.

Background

At present, most of turning plate tables on the market use a locating pin structure, a locating pin is used for locking when the table top is in the horizontal direction, a fixed pull rod or a spanner is used for unlocking, then the function of turning the table top is realized, and the position of the table top is 90 degrees when the table top is turned over and locked.

The tilting mechanism is the key of realizing the tilting function, and current tilting mechanism's main defect lies in:

(1) The fixed pull rod or the wrench is very inconvenient to use, and a user can only change the use habit of the user according to the product, so that the good sensitivity of the user to the product is reduced;

(2) After overturning, the table top is not provided with a fixed limiting structure, so that great hidden danger exists, the table top connected with the overturning mechanism is stressed and easily overturns to a horizontal position, and the conditions of table top damage, table frame damage or clamping injury to users and the like are easy to occur.

Disclosure of Invention

The application aims at the problems and overcomes at least one defect, and provides a turnover mechanism capable of automatically locking after turnover and furniture.

The technical scheme adopted by the application is as follows:

a turnover mechanism comprising:

the fixing seat is provided with a first limiting structure and a second limiting structure;

the rotating frame is rotatably arranged on the fixed seat;

the unfolding positioning piece is movably arranged in the rotating frame and comprises a first positioning part which is used for being matched with the first limiting structure to position the rotating frame in an unfolding working position;

the folding positioning piece is an elastic piece and is movably arranged in the rotating frame, and the folding positioning piece comprises a second positioning part which is used for being matched with the second limiting structure to position the rotating frame in a folding working position;

the control assembly is movably arranged in the rotating frame and used for driving the unfolding positioning piece and the folding positioning piece to move, so that the first positioning part is separated from the first limiting structure when in the unfolding working position, and the second positioning part is separated from the second limiting structure when in the folding working position;

and the elastic resetting piece is arranged in the rotating frame and used for resetting the control assembly when the control assembly is not subjected to external force.

When the rotating frame is in an unfolding working position, the rotating frame can be positioned in the unfolding working position through the cooperation of the first positioning part and the first limiting structure, the rotating frame cannot rotate under the action of external force, when the rotating frame is required to be switched from the unfolding working position to the folding working position, the control assembly is only required to be pulled, the control assembly can drive the unfolding positioning part and the folding positioning part to move, at the moment, the first positioning part is separated from the first limiting structure, the rotating frame can rotate and fold, when the rotating frame rotates to the set position, the control assembly cannot be influenced by the external force any more, and under the action of the elastic resetting part, the control assembly, the unfolding positioning part and the folding positioning part move and reset, and at the moment, the second limiting structure is matched with the second positioning part, so that the rotating frame is positioned in the folding working position, and the rotating frame cannot rotate under the action of external force; when the expansion work position needs to be adjusted, only the control component needs to be pulled, the expansion locating piece and the folding locating piece can be driven to move through the control component, at the moment, the second locating part is separated from the second limiting structure, the rotating frame can be rotated and expanded, when the rotating frame is expanded to be horizontal or basically horizontal (namely in the expansion work position), the control component is not influenced by external force any more, under the action of the elastic resetting piece, the control component, the expansion locating piece and the folding locating piece move and reset, and the first locating part is matched with the first limiting structure, so that the rotating frame can be positioned in the expansion work position.

In practical application, the turnover mechanism can be used on structures, such as furniture, which need to be turned over, such as a turnover table, a turnover chair or a turnover bed. When the turnover mechanism is used, at least 2 groups of turnover mechanisms are usually needed, and the turnover panel is relatively fixed with the rotating frames of the turnover mechanisms, so that when the rotating frames rotate, the panel can also rotate together, and when the rotating frames are fixed in position, the panel is also fixed in position.

According to the turnover mechanism, after turnover, the limit positioning function is realized through the cooperation of the second limit structure and the second positioning part, so that after the rotating frame is rotated to a fixed angle, the damage to a panel or other parts caused by excessive turnover or the turnover of furniture caused by the change of the gravity center after the turnover is avoided, the stability of a product is improved, and the service life of the product is prolonged; the turnover mechanism can automatically enter a locking state after being turned over, so that the rotating frame can not be turned down and unfolded suddenly under the action of external force, and the safety of a user is ensured.

In an embodiment of the application, the fixing seat comprises a straight plate and vertical plates arranged at two sides of the straight surface at intervals, the two vertical plates are positioned at one end of the straight plate, the end, away from the vertical plates, of the straight plate is provided with the first limiting structure, and when the rotating frame is in an unfolding working position, the rotating frame abuts against the straight plate, and the first positioning part is matched with the first limiting structure; the rotating frame is rotatably arranged between the two vertical plates through the rotating shaft, and the two second limiting structures are symmetrically arranged on the two vertical plates.

By arranging the straight plate, the contact area between the rotating frame and the fixed seat can be increased when the working position is unfolded, and the structural stress is better; the vertical plates that two intervals set up make can set up two second limit structure, and when upset working position, the locating that the rotating turret can be better.

When the folding work position is carried out, the included angle between the rotating frame and the straight plate can be 60-90 degrees, preferably 60-75 degrees, and the panel fixed with the rotating frame is not easy to collide with other parts.

In an embodiment of the application, the first limiting structure is a first groove, the rotating frame is provided with a first through hole, the first positioning part is a lock hook, and the lock hook penetrates out of the first through hole.

In an embodiment of the application, the second limiting structure is a second groove, the rotating frame is provided with a second through hole, the second positioning part is a convex structure, and when the folding working position is reached, the second positioning part penetrates out of the rotating frame through the second through hole and stretches into the corresponding second groove.

In an embodiment of the application, the folding positioning piece is a U-shaped spring, the U-shaped spring includes two elastic rods and a connecting rod connecting the two elastic rods, and the elastic rods are bent to form the second positioning portion.

When the control assembly is pulled by external force, the unfolding positioning piece and the folding positioning piece are driven to move, at the moment, the second positioning part is positioned in the rotating frame, and the second positioning part cannot interfere with the vertical plate when the rotating frame rotates; when switching to the folding work position, when the rotating frame does not rotate in place, even if the control assembly resets, because the effect of vertical board, elastic second location portion can not wear out yet, only when rotating to the settlement position, because the relation of second recess at this moment, vertical board no longer prescribes a limit to second location portion, and second location portion can wear out the second through-hole and stretch into in the second recess, realizes the location.

In an embodiment of the application, the unfolding positioning piece includes a first mounting groove, and the connecting rod is embedded in the first mounting groove; the elastic resetting piece is a tension spring, one end of the tension spring is connected with the rotating frame, and the other end of the tension spring is connected with the unfolding positioning piece; the control assembly is connected with the unfolding positioning piece.

Through the cooperation of first mounting groove and connecting rod for can drive when the control assembly removes and expand setting element and folding setting element synchronous motion.

In an embodiment of the application, the rotating frame comprises a square tube, an upper latch hook box and a lower latch hook box which are fixed in the square tube, wherein the unfolding positioning piece, the folding positioning piece, the control component and the elastic resetting piece are all arranged in the lower latch hook box, and the upper latch hook box cover is arranged on the lower latch hook box.

The square tube according to the present application is not limited to a square cross section.

In an embodiment of the present application, the control assembly is disposed in the rotating frame, and the control assembly includes:

the adjustable piece is arranged in the rotating frame in a sliding manner and comprises first positioning teeth;

the connecting piece is arranged in the adjustable piece and is connected with the unfolding positioning piece, the connecting piece is provided with a second positioning tooth matched with the first positioning tooth, the connecting piece also comprises a pressing part penetrating out of the adjustable piece and the rotating frame, and the pressing part is used for being pressed by external force to separate the second positioning tooth from the first positioning tooth;

and the reset spring is used for pushing the connecting piece to press the adjustable piece when the pressing part is not subjected to external force, so that the second positioning teeth are matched with the first positioning teeth, and the adjustable piece and the connecting piece are relatively fixed.

The control assembly can adjust holistic length, when needs are adjusted, through pressing the pressing part, the connecting piece overcomes reset spring's elastic force and removes or warp, and second positioning tooth breaks away from with first positioning tooth mutually this moment, and the adjustable piece can outwards or inwards remove relative connecting piece this moment, and after adjusting to the back, no longer pressing the pressing part, connecting piece resets under reset spring's effect, and first positioning tooth and second positioning tooth are to the cooperation, adjustable piece and connecting piece relatively fixed this moment. Compared with the prior art, the structure form of the control component provides a new use mode, and a user can freely adjust the overall length of the control component within a certain limit according to the use habit of the user, so that the product is more suitable for the use habit of the user.

In an embodiment of the application, the return spring is mounted on the connecting piece, and one end of the return spring is propped against the adjustable piece or the rotating frame; one side of the connecting piece, which is close to the first positioning teeth, is provided with the second positioning teeth, one side of the connecting piece, which is far away from the first positioning teeth, is provided with a mounting column, and the reset spring is mounted on the mounting column.

The application also discloses furniture, comprising:

the support frame is provided with at least two groups of turnover mechanisms, and the turnover mechanisms are fixed with the support frame through fixing seats;

the overturning panel is fixed with each rotating frame and used for realizing unfolding and folding actions under the action of each overturning mechanism;

and the control rod is connected with the control components of each turnover mechanism and used for driving each control component to synchronously move.

The furniture can be a table, a chair, a bed and the like, and when the furniture is used, the control rod can drive each control component to synchronously move, so that the turnover mechanism corresponding to the control component can be separated from a locking state, and the unfolding or folding operation can be performed.

The beneficial effects of the application are as follows: according to the turnover mechanism, after turnover, the limit positioning function is realized through the cooperation of the second limit structure and the second positioning part, so that after the rotating frame is rotated to a fixed angle, the damage to a panel or other parts caused by excessive turnover or the turnover of furniture caused by the change of the gravity center after the turnover is avoided, the stability of a product is improved, and the service life of the product is prolonged; the turnover mechanism can automatically enter a locking state after being turned over, so that the rotating frame can not be turned down and unfolded suddenly under the action of external force, and the safety of a user is ensured.

Description of the drawings:

FIG. 1 is a schematic view of the structure of the tilting mechanism of the present application in a deployed working position;

FIG. 2 is a schematic view of the structure of the tilting mechanism in the folding work position;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a schematic view of the control assembly being pulled and the first positioning portion being disengaged from the first limiting structure in the deployed position;

FIG. 6 is a top view of FIG. 2;

FIG. 7 is a B-B cross-sectional view of FIG. 6;

FIG. 8 is an exploded view of the flip mechanism;

FIG. 9 is a schematic view of the first positioning tooth and the second positioning tooth mated;

fig. 10 is a schematic view of the pressing portion being pressed to disengage the first positioning teeth and the second positioning teeth;

FIG. 11 is a schematic view of the furniture of the present application with the turret in the extended operative position;

fig. 12 is a schematic view of the furniture of the present application with the turret in a folded operative position.

The reference numerals in the drawings are as follows:

1. a fixing seat; 2. a rotating frame; 3. a control assembly; 4. a first limit structure; 5. a second limit structure; 6. a first positioning portion; 7. a second positioning portion; 8. an elastic reset piece; 9. unfolding the positioning piece; 10. folding the positioning piece; 11. a flat plate; 12. a vertical plate; 13. a rotating shaft; 14. a first through hole; 15. a second through hole; 16. an elastic rod; 17. a connecting rod; 18. a first mounting groove; 19. an upper latch hook box; 20. a lower latch hook box; 21. square tubes; 22. an adjustable member; 23. a first positioning tooth; 24. a connecting piece; 25. a second positioning tooth; 26. a pressing part; 27. a return spring; 28. a mounting column; 29. a support frame; 31. a control lever.

The specific embodiment is as follows:

the present application will be described in detail with reference to the accompanying drawings.

Example 1

As shown in fig. 1, 2, 3, 4, 5, 6, 7 and 8, a tilting mechanism comprises:

the fixing seat 1 is provided with a first limit structure 4 and a second limit structure 5;

the rotating frame 2 is rotatably arranged on the fixed seat 1;

the unfolding positioning piece 9 is movably arranged in the rotating frame 2, and the unfolding positioning piece 9 comprises a first positioning part 6 which is used for being matched with the first limiting structure 4 to position the rotating frame 2 in an unfolding working position;

the folding positioning piece 10 is an elastic piece and is movably arranged in the rotating frame 2, and the folding positioning piece 10 comprises a second positioning part 7 which is used for being matched with the second limiting structure 5 to position the rotating frame 2 in a folding working position;

the control assembly 3 is movably arranged in the rotating frame 2 and is used for driving the unfolding positioning piece 9 and the folding positioning piece 10 to move, so that the first positioning part 6 is separated from the first limiting structure 4 when in the unfolding working position, and the second positioning part 7 is separated from the second limiting structure 5 when in the folding working position;

and the elastic reset piece 8 is arranged in the rotating frame 2 and is used for resetting the control assembly 3 when the control assembly 3 is not subjected to external force.

When the rotating frame 2 is in an unfolding working position, the rotating frame 2 can be positioned in the unfolding working position through the cooperation of the first positioning part 6 and the first limiting structure 4, the rotating frame 2 cannot rotate under the action of external force, when the rotating frame 2 is required to be switched from the unfolding working position to the folding working position, the control component 3 is only required to be pulled, the control component 3 can drive the unfolding positioning part 9 and the folding positioning part 10 to move, at the moment, the first positioning part 6 is separated from the first limiting structure 4 (see figure 5), the rotating frame 2 can be rotated and folded, when the rotating frame 2 is rotated to a set position, the control component 3 cannot be subjected to the action of external force any more, the control component 3, the unfolding positioning part 9 and the folding positioning part 10 move and reset under the action of the elastic reset part 8, and at the moment, the second limiting structure 5 is matched with the second positioning part 7, so that the rotating frame 2 is positioned in the folding working position, and the rotating frame 2 cannot rotate under the action of external force; when needing to adjust to expansion position, only need pulling control assembly 3, can drive expansion setting element 9 and folding setting element 10 through control assembly 3 and remove, second location portion 7 breaks away from second limit structure 5 this moment, rotating turret 2 can rotate and expand, when rotating turret 2 expansion is level or basic level (be in expansion position promptly), control assembly 3 no longer receives the exogenic action, under the effect of elasticity setting element 8, control assembly 3, expansion setting element 9 and folding setting element 10 remove and reset, the cooperation of first location portion 6 and first limit structure 4 can make rotating turret 2 position in expansion position.

In practical application, the turnover mechanism can be used on structures, such as furniture, which need to be turned over, such as a turnover table, a turnover chair or a turnover bed. In use, at least 2 sets of turnover mechanisms are generally required, and the panel which can be turned over is relatively fixed with the rotating frame 2 of each turnover mechanism, so that when the rotating frame 2 rotates, the panel can also rotate together, and when the rotating frame 2 is fixedly positioned, the panel is fixedly positioned.

According to the turnover mechanism, after turnover, the second limiting structure 5 and the second positioning part 7 are matched, so that the limiting and positioning functions are realized, the rotating frame 2 can not damage a panel or other parts due to excessive turnover after rotating to a fixed angle, or the furniture can be turned over due to the change of the gravity center after turnover, the product stability is improved, and the service life of the product is prolonged; the turnover mechanism can automatically enter a locking state after being turned over, so that the rotating frame 2 cannot be turned down and unfolded suddenly under the action of external force, and the safety of a user is ensured.

As shown in fig. 1, 2 and 8, in this embodiment, the fixing base 1 includes a flat plate 11 and vertical plates 12 disposed on two sides of the flat surface and spaced apart from each other, the two vertical plates 12 are located at one end of the flat plate 11, the first limiting structure 4 is disposed at one end of the flat plate 11 away from the vertical plates 12, and when the rotating frame 2 abuts against the flat plate 11 in the unfolded working position, the first positioning portion 6 is matched with the first limiting structure 4; the rotating frame 2 is rotatably arranged between the two vertical plates 12 through a rotating shaft 13, and the two second limiting structures 5 are symmetrically arranged on the two vertical plates 12.

By arranging the straight plate 11, the contact area between the rotating frame 2 and the fixed seat 1 can be increased when the working position is unfolded, and the structural stress is better; the two vertical plates 12 arranged at intervals enable two second limit structures 5 to be arranged, and the rotating frame 2 can be better positioned when the rotating frame is in the overturning working position.

In the folded working position, the included angle between the rotating frame 2 and the flat plate 11 can be 60-90 degrees, preferably 60-75 degrees, and the panel fixed with the rotating frame 2 is not easy to collide with other components.

As shown in fig. 1, 2, 4 and 8, in this embodiment, the first limiting structure 4 is a first groove, the rotating frame 2 is provided with a first through hole 14, the first positioning portion 6 is a latch hook, and the latch hook penetrates through the first through hole 14.

As shown in fig. 1, 2, 4 and 8, in this embodiment, the second limiting structure 5 is a second groove, the rotating frame 2 is provided with a second through hole 15, the second positioning portion 7 is a convex structure, and when the folding working position is performed, the second positioning portion 7 penetrates out of the rotating frame 2 through the second through hole 15 and stretches into the corresponding second groove.

As shown in fig. 4 and 8, in this embodiment, the folding positioning member 10 is a U-shaped spring, and the U-shaped spring includes two elastic rods 16 and a connecting rod 17 connecting the two elastic rods 16, and the elastic rods 16 are bent to form the second positioning portion 7.

When the control assembly 3 is pulled by external force, the unfolding positioning piece 9 and the folding positioning piece 10 are driven to move, at the moment, the second positioning part 7 is positioned in the rotating frame 2, and the second positioning part 7 cannot interfere with the vertical plate 12 when the rotating frame 2 rotates; when the folding work position is switched, when the rotating frame 2 is not rotated in place, even if the control assembly 3 is reset, the elastic second positioning part 7 cannot penetrate out due to the action of the vertical plate 12, and only when the folding work position is rotated to the set position, the vertical plate 12 does not limit the second positioning part 7 any more at this time due to the relation of the second grooves, and the second positioning part 7 can penetrate out of the second through hole 15 to extend into the second grooves, so that positioning is realized.

As shown in fig. 4 and 8, in the present embodiment, the deployment positioning member 9 includes a first mounting groove 18, and the connecting rod 17 is embedded in the first mounting groove 18; the elastic resetting piece 8 is a tension spring, one end of the tension spring is connected with the rotating frame 2, and the other end of the tension spring is connected with the unfolding positioning piece 9; the control assembly 3 is connected with a deployment positioning member 9.

The first mounting groove 18 is matched with the connecting rod 17, so that the control assembly 3 can drive the unfolding positioning piece 9 and the folding positioning piece 10 to synchronously move when moving.

As shown in fig. 4 and 8, in this embodiment, the rotating frame 2 includes a square tube 21, and an upper latch hook box 19 and a lower latch hook box 20 fixed in the square tube 21, the unfolding positioning member 9, the folding positioning member 10, the control assembly 3, and the elastic restoring member 8 are all disposed in the lower latch hook box 20, and the upper latch hook box 19 is covered on the lower latch hook box 20. The square tube 21 according to the present application is not limited to a square cross section.

As shown in fig. 8, 9 and 10, in the present embodiment, the control unit 3 is disposed in the turret 2, and the control unit 3 includes:

an adjustable member 22 slidably disposed within the turret 2, the adjustable member including a first positioning tooth 23;

the connecting piece 24 is arranged in the adjustable piece 22, the connecting piece 24 is connected with the unfolding positioning piece 9, the connecting piece 24 is provided with a second positioning tooth 25 matched with the first positioning tooth 23, the connecting piece 24 also comprises a pressing part 26 penetrating out of the adjustable piece and the rotating frame 2, and the pressing part 26 is used for being pressed by external force so as to separate the second positioning tooth 25 from the first positioning tooth 23;

and a return spring 27 for pushing the connecting member 24 to press the adjustable member when the pressing portion 26 is not subjected to external force, so that the second positioning teeth 25 are matched with the first positioning teeth 23, and the adjustable member and the connecting member 24 are relatively fixed.

The control assembly 3 can adjust the whole length, when needs are adjusted, through pressing the pressing part 26, the connecting piece 24 overcomes the elastic force of reset spring 27 and removes or warp, and second positioning tooth 25 breaks away from with first positioning tooth 23 this moment, and adjustable piece 22 can outwards or inwards move relative to connecting piece 24 this moment, and after adjusting to the position, no longer pressing the pressing part 26, connecting piece 24 resets under reset spring 27's effect, and first positioning tooth 23 and second positioning tooth 25 are to the cooperation, and adjustable piece and connecting piece 24 are fixed relatively this moment. The structural form of the control assembly 3 provides a new use mode compared with the prior product, and a user can freely adjust the overall length of the control assembly 3 within a certain limit according to own use habit, so that the product is more suitable for the use habit of the user.

As shown in fig. 8, 9 and 10, in this embodiment, the return spring 27 is mounted on the connecting member 24, and one end of the return spring 27 abuts against the adjustable member 22 or the rotating frame 2; the second positioning teeth 25 are arranged on the side, close to the first positioning teeth 23, of the connecting piece 24, the mounting post 28 is arranged on the side, far away from the first positioning teeth 23, of the connecting piece 24, and the return spring 27 is mounted on the mounting post 28.

As shown in fig. 8, in the present embodiment, the first mounting groove 18 is provided on the connection member 24.

Example 2

As shown in fig. 11 and 12, the present embodiment discloses a furniture including:

the support 29, at least two sets of turnover mechanisms described in embodiment 1 are arranged on the support 29, and the turnover mechanisms are fixed with the support 29 through the fixing seat 1;

a turnover panel (not shown in the figure) fixed to each turret 2 for realizing the unfolding and folding actions under the action of each turnover mechanism;

the control rod 31 is connected with the control components 3 of each turnover mechanism and is used for driving each control component 3 to synchronously move.

The furniture in this embodiment may be a table, a chair, a bed, etc., and when in use, the control rod 31 can drive the control components 3 to move synchronously, so that the turnover mechanism corresponding to the control components 3 can be separated from the locking state, and the unfolding or folding operation can be performed.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the application, but rather is intended to cover all equivalent structures as modifications within the scope of the application, either directly or indirectly, as may be contemplated by the present application.

Claims

1. A turnover mechanism, comprising:

the rotating frame is rotatably arranged on the fixed seat;

the elastic resetting piece is arranged in the rotating frame and used for resetting the control assembly when the control assembly is not subjected to external force;

the fixing seat comprises straight plates and vertical plates which are arranged on two sides of the straight surface at intervals, the two vertical plates are positioned at one end of the straight plates, one end, away from the vertical plates, of the straight plates is provided with a first limiting structure, when the working position is unfolded, the rotating frame abuts against the straight plates, and the first positioning part is matched with the first limiting structure; the rotating frame is rotatably arranged between the two vertical plates through a rotating shaft, and two second limiting structures are symmetrically arranged on the two vertical plates;

the first limiting structure is a first groove, the rotating frame is provided with a first through hole, the first positioning part is a lock hook, and the lock hook penetrates out of the first through hole;

the second limiting structure is a second groove, the rotating frame is provided with a second through hole, the second positioning part is of a convex structure, and when the folding working position is reached, the second positioning part penetrates out of the rotating frame through the second through hole and stretches into the corresponding second groove;

the folding positioning piece is a U-shaped spring, the U-shaped spring comprises two elastic rods and a connecting rod for connecting the two elastic rods, and the elastic rods are bent to form the second positioning part;

the unfolding positioning piece comprises a first mounting groove, and the connecting rod is embedded in the first mounting groove; the elastic resetting piece is a tension spring, one end of the tension spring is connected with the rotating frame, and the other end of the tension spring is connected with the unfolding positioning piece; the control assembly is connected with the unfolding positioning piece;

the control assembly is arranged in the rotating frame, and the control assembly comprises:

2. The turnover mechanism of claim 1, wherein the rotating frame comprises a square tube, an upper latch hook box and a lower latch hook box which are fixed in the square tube, the unfolding positioning piece, the folding positioning piece, the control component and the elastic reset piece are all arranged in the lower latch hook box, and the upper latch hook box cover is arranged on the lower latch hook box.

3. The tilting mechanism of claim 1, wherein said return spring is mounted on a connecting member, one end of the return spring being in abutment with the adjustable member or turret; one side of the connecting piece, which is close to the first positioning teeth, is provided with the second positioning teeth, one side of the connecting piece, which is far away from the first positioning teeth, is provided with a mounting column, and the reset spring is mounted on the mounting column.

4. A piece of furniture, comprising:

the support frame is provided with at least two groups of turnover mechanisms according to any one of claims 1-3, and the turnover mechanisms are fixed with the support frame through fixing seats;