Folding rod mechanism and baby crib

Abstract

The utility model discloses a folding rod mechanism and a baby crib. The folding rod mechanism comprises a middle connecting piece, a folding rod and a locking assembly. The two folding rods are rotatably arranged on the two opposite sides of the middle connecting piece respectively and have a supporting state and a folding state. The locking assembly comprises two locking pieces, and the two locking pieces are arranged on the two folding rods correspondingly. The at least one locking piece is movably arranged on the folding rod and is provided with a locking position and an unlocking position; at the locking position, the two locking pieces are matched to stop the two folding rods from rotating; and at the unlocking position, the two locking pieces are separated, and the two folding rods can be rotationally switched from the supporting state to the folding state. According to the technical scheme, the use convenience of the folding rod mechanism can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to children's articles technical field, especially a folding rod mechanism and apply the baby crib of this folding rod mechanism. BACKGROUND

[0002] At present, in order to realize foldable storage, such as children's bed and children's pushchair and so on carrier, usually set up the folding rod mechanism that can fold. However, the folding rod mechanism in the related art is usually locked separately to two folding rods in the support state, so that the locking structure of two folding rods is more complex, and then the use of folding rod mechanism is more cumbersome. SUMMARY

[0003] The main purpose of the utility model is to provide a folding rod mechanism, which aims to improve the convenience of folding rod mechanism.

[0004] To achieve the above object, the folding rod mechanism provided by the utility model comprises:

[0005] An intermediate connecting piece;

[0006] Two folding rods, which are respectively rotatably arranged on opposite sides of the intermediate connecting piece and have a support state and a folding state; and

[0007] A locking assembly, which comprises two locking pieces, and the two locking pieces are respectively arranged on the two folding rods;

[0008] At least one locking piece is movably arranged on the folding rod and has a locking position and an unlocking position;

[0009] In the locking position, the two locking pieces cooperate to block the rotation of the two folding rods;

[0010] In the unlocking position, the two locking pieces are separated, and the two folding rods can be switched from the support state to the folding state by rotation.

[0011] Optionally, the intermediate connecting piece is provided with a connecting piece locking portion, and when the locking piece moves to the locking position, the locking piece is engaged with the connecting piece locking portion to limit the rotation of the locking piece relative to the intermediate connecting piece.

[0012] Optionally, the connecting piece locking portion is a sliding groove arranged on the intermediate connecting piece, and in the support state, the sliding groove is arranged in extension along the sliding direction of the locking piece.

[0013] The locking piece is provided with a sliding pin shaft, and the sliding pin shaft is in sliding cooperation with the sliding groove.

[0014] Optionally, the extension direction of the sliding pin shaft is perpendicular to the sliding direction of the locking member.

[0015] Optionally, the intermediate connecting member further has a guide slot in communication with the sliding slot, when the locking member moves to the unlocking position, the sliding pin shaft is located in the guide slot, and when the folding rod rotates relative to the intermediate connecting member, the sliding pin shaft slides along the guide slot.

[0016] The guide slot is arc-shaped as a whole.

[0017] Optionally, the movable locking member is defined as a movable locking member, and the other locking member is a fixed locking member.

[0018] At the locking position, the upper and lower sides of the fixed locking member abut to the intermediate connecting member and the sliding pin shaft respectively.

[0019] Optionally, the intermediate connecting member comprises a vertical support plate and a horizontal support plate, the folding rod is rotatably installed on the vertical support plate, the sliding slot and the guide slot are arranged on the vertical support plate, and the sliding pin shaft is arranged on the vertical support plate relative to the sliding direction.

[0020] At the locking position, the two sides of the fixed locking member abut to the horizontal support plate and the sliding pin shaft respectively.

[0021] Optionally, the fixed locking member comprises a body and a hook-shaped portion protruding from the body away from the folding rod, the hook-shaped portion has an abutting surface abutting to the sliding pin shaft and an inclined guide surface, and the inclined guide surface is arranged on the side of the hook-shaped portion away from the abutting surface.

[0022] When the movable locking member is located at the locking position, the fixed locking member can drive the sliding pin shaft to move under the action of the inclined guide surface, so that the fixed locking member can rotate from the unlocking position to the locking position.

[0023] Optionally, the folding rod is provided with a mounting hole, the mounting hole is arranged along the moving direction of the movable locking member and penetrates through the end of the folding rod close to the intermediate connecting member.

[0024] The movable locking member comprises a mounting column and a locking head connected to one end of the mounting column, the locking head is provided with the sliding pin shaft, the mounting column is movably inserted into the mounting hole, and the locking head is located outside the mounting hole.

[0025] The locking assembly further comprises a reset member arranged between the movable locking member and the folding rod; under the action of external force, the sliding pin shaft moves along the sliding groove to the unlocking position to deform the reset member, and after the action of external force is removed, the reset member drives the sliding pin shaft to move back to the original position;

[0026] And / or, the locking assembly further comprises a traction cable, one end of the traction cable is connected to the movable locking member;

[0027] And / or, the moving direction of the locking member is parallel to the extending direction of the folding rod.

[0028] The utility model discloses further propose a crib, including a plurality of stand and connect between two standings of surrounding pole, the surrounding pole adopts the folding rod mechanism as described above.

[0029] The folding rod mechanism of the technical scheme of the utility model is provided with the locking assembly comprising two locking members, and the two locking members are arranged on the two folding rods respectively, and at least one locking member is movably arranged to have a locking position and an unlocking position. Therefore, when the two folding rods are in the supporting state, the locking members are located at the locking position, and the two locking members can block the rotation of the two folding rods through cooperation, thereby realizing the locking of the two folding rods in the supporting state. Then, when folding is needed, the locking members only need to be moved to the unlocking position, so that the two locking members are separated to release the locking of the two folding rods, thereby realizing the rotation of the two folding rods from the supporting state to the folding state. At this time, the locking of the two folding rods adopts the same structure, that is, the locking assembly, which can realize the synchronous locking and unlocking of the two folding rods to simplify the locking and unlocking operation, thereby facilitating the convenience of use of the folding rod mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained from the structure shown in the drawings without creative labor.

[0031] Figure 1 The structure schematic diagram of an embodiment of the utility model crib;

[0032] Figure 2 It is the explosion structure schematic diagram of an embodiment of the folding rod mechanism of the utility model;

[0033] Figure 3 It is Figure 2 The local enlarged view of A in the middle

[0034] Figure 4 Structure schematic view of one embodiment of the folding rod mechanism in a folded state;

[0035] Figure 5 Structure schematic view of one embodiment of the folding rod mechanism in a supporting state;

[0036] Figure 6 Structure schematic view of one embodiment of the folding rod mechanism in a folded state; Figure 5 Structure schematic view of one embodiment of the folding rod mechanism in a folded state;

[0037] Explanation of reference numerals:

[0038] 1000, crib;

[0039] 100, folding rod mechanism; 10, intermediate connecting piece; 11, vertical support plate; 111, connecting piece locking portion; 111a, sliding groove; 112, guide groove; 13, horizontal support plate; 20, folding rod; 20a, mounting hole; 30, locking assembly; 31, locking piece; 33, movable locking piece; 331, mounting note; 333, locking head; 3331, sliding pin shaft; 35, fixed locking piece; 351, body; 353, hook-shaped portion; 353a, abutting surface; 353b, oblique guide surface; 40, stop piece; 50, reset piece; 60, traction cable.

[0040] 200, stand

[0041] 300, surrounding rod

[0042] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0045] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like shall be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be internal connection of two elements, or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In addition, the description involving "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features, or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B schemes. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope claimed by the present application.

[0047] Please refer to Figure 1 The present application proposes a folding rod mechanism 100, which can be applied to a baby bed 1000. Specifically, the baby bed 1000 can include a plurality of columns 200 and a surrounding rod 300 connected between two columns 200, and the surrounding rod 300 can adopt the folding rod mechanism 100 proposed in the present application.

[0048] Next, the structure of the folding rod mechanism 100 proposed in the present application will be explained and described:

[0049] Please refer to Figures 2 to 6 In an embodiment of the present application, the folding rod mechanism 100 includes an intermediate connecting piece 10, a folding rod 20, and a locking assembly 30; two folding rods 20 are respectively rotatably arranged on opposite sides of the intermediate connecting piece 10, and have a supporting state and a folding state; the locking assembly 30 includes two locking pieces 31, and the two locking pieces 31 are respectively arranged on the two folding rods 20; at least one locking piece 31 is movably arranged on the folding rod 20, and has a locking position and an unlocking position; at the locking position, the two locking pieces 31 cooperate to block the rotation of the two folding rods 20; at the unlocking position, the two locking pieces 31 are disengaged, and the two folding rods 20 can be switched from the supporting state to the folding state by rotation.

[0050] The intermediate connector 10 can be used to provide a connection position to facilitate the installation and connection of the two folding rods 20. The intermediate connector 10 can be a plate structure, a base structure, or a shell structure formed by multiple plates. The present application does not limit the structural type and shape of the intermediate connector 10.

[0051] The folding rods 20 can be two in number, and one end of the two folding rods 20 can be arranged opposite to each other and rotatably connected to both sides of the intermediate connector to achieve the two folding rods 20 having a supporting state and a folding state. Figure 5 As shown, the two folding rods 20 can form a straight angle or a nearly straight angle; in the folded state, as shown Figure 4 As shown, the two folding rods 20 can form an acute angle. Furthermore, the rotational connection between the folding rod 20 and the intermediate connector 10 can be achieved by providing both the folding rod 20 and the intermediate connector 10 with sockets, which are then inserted through a shaft. Alternatively, one of the folding rod 20 and the intermediate connector 10 can be provided with a socket, and the other of the folding rod 20 and the intermediate connector 10 can be provided with a protruding shaft, which is inserted into the socket. As can be seen, this application does not limit the rotational connection method between the folding rod 20 and the intermediate connector 10. Furthermore, the end of the folding rod 20 away from the intermediate connector 10 can be connected to a column in the crib. Furthermore, the folding rod 20 can extend in a linear direction to provide a regular shape, improving manufacturing convenience. This also facilitates the compactness of the folding rod mechanism 100 during subsequent folding. Furthermore, along the direction of extension of the folding rod 20, the cross-section of the folding rod 20 can be any shape, such as circular, square, or rectangular.

[0052] The locking assembly 30, through the cooperation of two locking members 31, can lock the two folding rods 20 in the supported state, preventing them from rotating, thereby ensuring that the folding rod mechanism 100 can remain stable in this state. The two locking members 31 can be engaged and locked by the connector locking portion on the intermediate connector 10 as described below. Of course, the two locking members 31 can also be directly plugged into each other, and this application does not limit the cooperation method of the two locking members 31. In addition, only one locking member 31 can be movably mounted on the corresponding folding rod 20, or both locking members 31 can be movably mounted on their respective folding rods 20, ensuring that at least one locking member 31 can be moved to a locked position and an unlocked position. In addition, the movement direction of the locking member 31 can be parallel to the extension direction of the folding rod 20 to improve the convenience of installing the locking member 31 on the folding rod.

[0053] The folding rod mechanism 100 of the technical scheme of the present application is provided with a locking assembly 30 comprising two locking members 31, and the two locking members 31 are arranged on the two folding rods 20 respectively, and at least one locking member 31 is arranged movably. In this way, when the two folding rods 20 are in the supporting state, the locking members 31 are located at the locking positions, and the two folding rods 20 can be blocked from rotating by the cooperation of the two locking members 31, thereby realizing the locking of the two folding rods 20 in the supporting state. Then, when folding is needed, only the locking members 31 need to be driven to move to the unlocking positions, so that the two locking members 31 are separated, thereby releasing the locking of the two folding rods 20, and realizing the rotation of the two folding rods 20 to switch to the folding state. At this time, the locking of the two folding rods 20 adopts the same structure, that is, the locking assembly 30, which can realize the synchronous locking and unlocking of the two folding rods 20 and simplify the locking and unlocking operation, thereby facilitating the convenience of use of the folding rod mechanism 100.

[0054] For reference Figures 2 to 6 In an embodiment of the present application, the intermediate connecting piece 10 is provided with a connecting piece locking portion 111, and when the locking member 31 moves to the locking position, the locking member 31 is engaged with the connecting piece locking portion 111 to limit the rotation of the locking member relative to the intermediate connecting piece 10.

[0055] In the embodiment, the connecting piece locking portion 111 is arranged on the intermediate connecting piece 10, so that it can be conveniently contacted and limited by the two locking members 31, and directly utilizes the structure on the intermediate connecting piece 10, thereby facilitating the convenience of limiting and locking the two folding rods 20 in the supporting state, to simplify the setting of the locking structure of the folding rod 20.

[0056] For reference Figure 2 and Figure 3 In an embodiment of the present application, the connecting piece locking portion 111 is a sliding groove 111a arranged on the intermediate connecting piece 10, and in the supporting state, the sliding groove 111a is arranged along the sliding direction of the locking member 31; the locking member is provided with a sliding pin shaft 3331, and the sliding pin shaft 3331 is in sliding cooperation with the sliding groove 111a.

[0057] In the embodiment, the cooperation of the sliding groove 111a and the sliding pin shaft 3331 can realize the better limiting effect of the rotation of the locking member 31 relative to the intermediate connecting piece 10. Meanwhile, on this basis, the structures of the sliding groove 111a and the sliding pin shaft 3331 at this time are relatively simple, thereby further simplifying the setting of the locking structure of the folding rod 20 and improving the convenience of use of the folding rod mechanism 100.

[0058] For reference Figure 3In an embodiment of the present application, the extending direction of the sliding pin shaft 3331 is perpendicular to the sliding direction of the locking member 31.

[0059] In the embodiment, the extending direction of the sliding pin shaft 3331 and the sliding direction of the locking member 31 are set to be perpendicular, so that when the two folding rods 20 are in the supporting state, the sliding pin shaft 3331 can be fully located in the sliding groove 111a, so as to improve the limiting effect of the rotation of the locking member 31 relative to the intermediate connecting member 10. At the same time, such setting also makes the extending length of the sliding groove 111a relatively short, that is, the sliding pin shaft 3331 can be better accommodated and limited, thereby facilitating the processing and forming of the sliding groove 111a.

[0060] Please refer to Figures 3 to 5 In an embodiment of the present application, the intermediate connecting member 10 further has a guide groove 112 in communication with the sliding groove 111a. When the locking member 31 moves to the unlocking position, the sliding pin shaft 3331 is located in the guide groove 112, and when the folding rod 20 rotates relative to the intermediate connecting member 10, the sliding pin shaft 3331 slides along the guide groove 112. The guide groove 112 is arc-shaped as a whole.

[0061] In the embodiment, the guide groove 112 in communication with the sliding groove 111a is further arranged at one end of the sliding groove 111a, so that during the rotation and unfolding of the folding rod 20, the sliding pin shaft 3331 can be guided by the guide groove 112, so as to facilitate the subsequent alignment and cooperation of the sliding pin shaft 3331 and the sliding groove 111a, and realize the accurate sliding into the sliding groove 111a when the folding rod 20 rotates to the supporting state.

[0062] Please refer to Figures 4 to 6 In an embodiment of the present application, the movable locking member 31 is defined as a movable locking member 33, and the other locking member 31 is a fixed locking member 35. The upper and lower sides of the fixed locking member 35 respectively abut to the intermediate connecting member 10 and the sliding pin shaft 3331 at the locking position.

[0063] In the embodiment, one of the locking members 31 is arranged as the movable locking member 33 and the other is arranged as the fixed locking member 35, so that only one of the locking members 31 needs to be driven to move when the two folding rods in the supporting state are unlocked, thereby facilitating the simplification of the unlocking operation and improving the convenience of the folding rod mechanism 100. Further, the fixed locking member 35 in the locking position is arranged to abut against the intermediate connecting member 10 and the sliding pin shaft 3331 on the upper and lower sides, respectively, so that the rotation freedom of the fixed locking member 35 in the upward and downward directions is effectively limited. Moreover, the intermediate connecting member 10 and the sliding pin shaft 3331 are directly used for limiting, so that no additional limiting structure needs to be arranged, thereby facilitating the simplification of the arrangement of the locking structure of the folding rod 100.

[0064] For reference Figures 3 to 6 In an embodiment of the present application, the intermediate connecting member 10 includes the vertical support plate 11 and the horizontal support plate 13, the folding rod 20 is rotatably installed on the vertical support plate 11, and the sliding groove 111a and the guide groove 112 are arranged on the vertical support plate 11. The sliding pin shaft 20a is arranged on the vertical support plate 11 in a sliding manner. In the locking position, the two sides of the fixed locking member 35 abut against the horizontal support plate 13 and the sliding pin shaft 3331, respectively.

[0065] In the embodiment, the intermediate connecting member 10 is arranged to include the vertical support plate 11 and the horizontal support plate 13, so that the vertical support plate 11 is conveniently arranged to provide a position for arranging the sliding groove 111a and the guide groove 112. The vertical support plate 11 can be matched with the sliding pin shaft 3331 to limit the two rotation freedoms of the fixed locking member 35 in the upward and downward directions.

[0066] For reference Figures 3 to 6 In an embodiment of the present application, the fixed locking member 35 includes the body 351 and the hook-shaped portion 353 protruding from the body 351 away from the folding rod 20, the hook-shaped portion 353 has the abutting surface 353a abutting against the sliding pin shaft 3331 and the inclined guide surface 353b arranged on the side of the hook-shaped portion 353 away from the abutting surface 353a. When the movable locking member 33 is in the locking position, the fixed locking member 35 can drive the sliding pin shaft 3331 to move under the action of the inclined guide surface 353b, so that the fixed locking member 35 can be rotated from the unlocking position to the locking position.

[0067] In this embodiment, the fixed locking member 35 is configured to include a main body 351 and a hook portion 353, and the hook portion 353 has an abutment surface 353a and an inclined guide surface 353b, so that when the folding rod is rotated and unfolded, the inclined guide surface 353b can drive and guide the sliding pin 3331, thereby facilitating the sliding pin 3331 to be automatically guided to slide to the side where the abutment surface 353a is located when the folding rod 20 is rotated and unfolded.

[0068] Please refer to Figure 2 In one embodiment of the present application, the folding rod 20 is provided with a mounting hole 20a, which extends along the moving direction of the movable locking member 33 and passes through one end of the folding rod 20 close to the intermediate connecting member 10; the movable locking member 33 includes a mounting column 331 and a locking head 333 connected to one end of the mounting column 331, the locking head 333 is provided with a sliding pin shaft 3331, the mounting column 331 is movably inserted into the mounting hole 20a, and the locking head 333 is located outside the mounting hole 20a.

[0069] In this embodiment, the movable locking member 33 is configured to include a mounting post 331 and a locking head 333. This allows the mounting post 331 and the locking head 333 to be mounted on the folding rod 20, respectively, and to engage and retain the sliding pin 3331 with the slide groove 111a. In other words, different functions can be conveniently achieved by different parts of the movable locking member 33. Furthermore, the mounting post 331 is removably inserted into the corresponding mounting hole 20a of the folding rod 20, simplifying the movable connection of the movable locking member 33 during folding, enabling a simpler structure and improving the manufacturing convenience of the folding rod mechanism 100. This also improves the compactness of the mounting of the movable locking member 33 on the folding rod 20. The mounting hole 20a also serves as a guide for the movement of the movable locking member 33, thereby enhancing the stability of the movable locking member 33's movement. The mounting hole 20a can extend through opposite ends of the folding rod 20 to enhance its manufacturing convenience.

[0070] Please refer to Figure 2 In one embodiment of the present application, the locking assembly 30 further includes a reset member 50, which is disposed between the movable locking member 33 and the folding rod 20. Under the action of an external force, the sliding pin 3331 moves along the sliding groove 111a toward the unlocked position, causing the reset member to deform. After the external force is removed, the reset member drives the sliding pin 3331 to reset.

[0071] In the embodiment, the reset member 50 can provide a reset force, so that the movable locking member 33 can be automatically reset when the two folding rods 20 are unfolded to the position. Moreover, the reset member 50 can have a pre-pressing state when the folding rod 20 is in the supporting state, so as to drive the movable locking member 33 to be stably in the locking position. The reset member 50 can be a spring, so that the reset member 50 can have better elasticity and lower cost, and is convenient to obtain in the market. Moreover, when the folding rod 20 is provided with the mounting hole 20a as described above, the reset member 50 can be conveniently mounted in the mounting hole 20a. Of course, the reset member 50 can also be a spring piece, and the type of the reset member 50 is not limited in the application. In addition, in order to conveniently abut and limit the end of the reset member 50 away from the movable locking member 33, the locking assembly 30 can further include a stop member 40, which can be arranged in the mounting hole 20a of the folding rod 20, and the reset member 50 can be arranged between the stop member 40 and the mounting column 331 of the movable locking member 33.

[0072] Please refer to Figure 2 In an embodiment of the application, the locking assembly 30 further includes a traction cable 60, one end of the traction cable 60 being connected to the movable locking member 33.

[0073] In the embodiment, the traction cable 60 can conveniently drive the movable locking member 33 to move to the unlocking position, thereby further improving the convenience of unlocking the folding rod mechanism 100. The traction cable 60 can be arranged in the mounting hole 20a and connected to the mounting column 331 of the movable locking member 33 through the stop member 40 and the reset member 50, so as to realize the hidden arrangement of the traction cable 60. In addition, the material of the traction cable 60 can be metal, and of course can also be nylon, and the material of the traction cable 60 is not limited in the application.

[0074] Please refer to Figures 2 to 4 In an embodiment of the application, the folding process of the folding rod mechanism 100 can be that when the traction cable 60 is pulled, the sliding pin shaft 3331 of the movable locking member 33 can be driven to move from the sliding groove 111a to the guide groove 112. At this time, the sliding groove 111a no longer limits the sliding pin shaft 3331 of the movable locking member 33 in the up-down direction, so that the folding rod 20 provided with the movable locking member 33 can be folded upward at the end away from the intermediate connecting member 10; at the same time, the sliding pin shaft 3331 of the movable locking member 33 no longer abuts and limits the lower side of the fixed locking member 35, so that the folding rod 20 provided with the fixed locking member 35 can also be folded upward at the end away from the intermediate connecting member 10, thereby realizing the folding and storage of the folding rod 20, as shown in FIG. 6b. Figure 4The unfolding process of the folding rod mechanism 100 can be as follows: the two folding rods 20 are driven to rotate downward away from the middle connecting piece 10, so that the sliding pin shaft 3331 in the movable locking piece 33 slides in the guide groove 112; then when the sliding pin shaft 3331 slides into the sliding groove 111a, the movable locking piece 33 can cooperate with the fixed locking piece 35 under the drive of the reset piece 50; at this time, the folding rod 20 provided with the movable locking piece 33 can be limited in the up-down direction through the sliding groove 111a, and the two sides of the fixed locking piece 35 in the up-down direction can be abutted and limited through the cooperation of the sliding pin shaft 3331 on the movable locking piece 33 and the transverse support plate 13 of the middle connecting piece 10, so as to realize the relocking of the folding rod 20 in the supporting state, as shown in Figure 5 and Figure 6 as shown.

[0075] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like within the inventive concept of the present application and the content of the specification and drawings are included in the patent protection scope of the present application.

Claims

1. A folding lever mechanism, characterized by, The utility model relates to a folding device of a folding chair, which comprises: a middle connecting piece; two folding rods, each of which is rotatably arranged on opposite sides of the middle connecting piece and has a supporting state and a folding state; and a locking assembly, which comprises two locking pieces, each of which is arranged on one of the two folding rods; at least one of the locking pieces is movably arranged on the folding rod and has a locking position and an unlocking position; at the locking position, the two locking pieces are matched to block the rotation of the two folding rods; at the unlocking position, the two locking pieces are separated, and the two folding rods can be switched from the supporting state to the folding state by rotation. The middle connecting piece is provided with a connecting piece locking portion, and when the locking piece moves to the locking position, the locking piece is engaged with the connecting piece locking portion to limit the rotation of the locking piece relative to the middle connecting piece.

2. The folding lever mechanism of claim 1, wherein, The connecting piece locking portion is a sliding groove arranged on the middle connecting piece, and in the supporting state, the sliding groove is arranged along the sliding direction of the locking piece; 3. The folding lever mechanism of claim 2, wherein, The locking piece is provided with a sliding pin shaft, and the sliding pin shaft is in sliding cooperation with the sliding groove. The extension direction of the sliding pin shaft is perpendicular to the sliding direction of the locking piece.

4. The folding lever mechanism of claim 3, wherein The middle connecting piece is also provided with a guide groove in communication with the sliding groove, and when the locking piece moves to the unlocking position, the sliding pin shaft is located in the guide groove, and when the folding rod rotates relative to the middle connecting piece, the sliding pin shaft slides along the guide groove; the guide groove is arc-shaped as a whole.

5. The folding lever mechanism of claim 3, wherein, The movable locking piece is defined as a movable locking piece, and the other locking piece is a fixed locking piece; 6. The folding lever mechanism of claim 5, wherein, At the locking position, the upper and lower sides of the fixed locking piece are respectively abutted to the middle connecting piece and the sliding pin shaft. The middle connecting piece comprises a vertical support plate and a horizontal support plate, the folding rod is rotatably arranged on the vertical support plate, and the sliding groove and the guide groove are arranged on the vertical support plate; the sliding pin shaft is arranged on the vertical support plate in a relative sliding manner; 7. The folding lever mechanism of claim 6, wherein, At the locking position, the two sides of the fixed locking piece are respectively abutted to the horizontal support plate and the sliding pin shaft. The fixed locking piece comprises a body and a hook-shaped portion protruding from the body away from the folding rod, the hook-shaped portion has an abutting surface abutting with the sliding pin shaft and an inclined guide surface, and the inclined guide surface is arranged on the side of the hook-shaped portion away from the abutting surface; 8. The folding lever mechanism of claim 6, wherein, When the movable locking piece is at the locking position, the fixed locking piece can drive the sliding pin shaft to move under the action of the inclined guide surface, so that the fixed locking piece can be rotated from the unlocking position to the locking position. The folding rod is provided with a mounting hole, the mounting hole is arranged along the movement direction of the movable locking piece and penetrates through one end of the folding rod close to the middle connecting piece; 9. The folding lever mechanism of claim 6, wherein, The movable locking piece comprises a mounting column and a locking head connected to one end of the mounting column, the locking head is provided with the sliding pin shaft, the mounting column is movably inserted into the mounting hole, and the locking head is located outside the mounting hole; ​ The locking assembly further comprises a reset member arranged between the movable locking member and the folding rod; under the action of an external force, the sliding pin shaft moves along the sliding groove towards the unlocking position to deform the reset member; after the external force is removed, the reset member drives the sliding pin shaft to move back to the original position; And / or, the locking assembly further comprises a traction cable, one end of the traction cable being connected to the movable locking member; And / or, the moving direction of the locking member is parallel to the extending direction of the folding rod.

10. A crib, characterized in that, The folding rod mechanism according to any one of claims 1 to 9 is used in a folding rod structure comprising a plurality of upright columns and a plurality of folding rods connected between two upright columns.

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