Folding joint

Abstract

The utility model discloses a folding joint which is provided with a folding position and an unfolding position and comprises a first rotating part, a second rotating part and a third rotating part, the first rotating part and the third rotating part are rotationally connected with the second rotating part, and the folding joint further comprises a linkage part and a locking mechanism. The two ends of the linkage piece are rotationally connected with the first rotating piece and the third rotating piece respectively, and the locking mechanism is arranged between the first rotating piece and the second rotating piece; when the folding joint is located at the unfolding position, the locking mechanism enables the first rotating piece and the second rotating piece to be locked at the unfolding position, and the third rotating piece is kept at the unfolding position under the linkage effect of the linkage piece. When the folding joint is located at the folding position, the first rotating piece and the third rotating piece are folded on the two sides of the second rotating piece. The overall size of the folding joint is reduced while it is guaranteed that the three components can be opened or folded in a linkage mode, and the structure is novel and simple.

Description

Technical Field

[0001] The present application relates to the technical field of children's appliances, and in particular to a folding joint. Background Art

[0002] In the prior art, products that can be both unfolded and folded, such as strollers and child seats, all involve folding joints that can be unfolded or folded. Existing folding joints are relatively complex in structure, with many components, many of which are stacked, resulting in a large overall size and inconvenient assembly. Summary of the Invention

[0003] The purpose of this application is to provide a folding joint with a novel and simple structure.

[0004] The technical solution of the present application is: a folding joint having a folding position and an unfolding position, which includes a first rotating member, a second rotating member and a third rotating member, the first rotating member and the third rotating member are respectively rotatably connected to the second rotating member, the folding joint also includes a linkage member and a locking mechanism, the two ends of the linkage member are respectively rotatably connected to the first rotating member and the third rotating member, and the locking mechanism is arranged between the first rotating member and the second rotating member; when the folding joint is in the unfolding position, the locking mechanism locks the first rotating member and the second rotating member in the unfolding position, and the third rotating member is maintained in the unfolding position under the linkage action of the linkage member; when the folding joint is in the folding position, the first rotating member and the third rotating member are retracted on both sides of the second rotating member.

[0005] As a preferred technical solution, the first rotating member includes a first rotating portion extending into the second rotating member and rotatably connected thereto, the third rotating member includes a third rotating portion extending into the second rotating member and rotatably connected thereto, and the linkage member is arranged in the second rotating member and can move relative to it.

[0006] As a preferred technical solution, the second rotating member is assembled by splicing the first rotating seat and the second rotating seat, and the first rotating part, the third rotating part and the linkage member are all installed between the first rotating seat and the second rotating seat.

[0007] As a preferred technical solution, there are two symmetrical linkage members, which are rotatably connected to both sides of the first rotating part and the third rotating part respectively.

[0008] As a preferred technical solution, the first rotating member further includes an auxiliary outer seat located outside the second rotating member and relatively fixed to and rotating synchronously with the first rotating part.

[0009] As a preferred technical solution, the locking mechanism includes a lock tongue mounted on the auxiliary outer seat and capable of sliding and retracting relative to the auxiliary outer seat, a reset member is provided between the lock tongue and the auxiliary outer seat, and a first lock groove and a second lock groove for the lock tongue to be locked are respectively formed on the first rotating part and the second rotating member; an unlocking component that can drive the lock tongue to slide and retract is directly or indirectly provided on the auxiliary outer seat.

[0010] As a preferred technical solution, the second rotating member includes a main body and a first branch and a second branch extending obliquely to both sides from the end of the main body, the first rotating member is rotatably connected to the first branch, and the third rotating member is rotatably connected to the second branch; when the folding joint is folded, the first rotating member rotates around the rotation point between it and the first branch, and the third rotating member rotates around the rotation point between it and the second branch, so as to be folded on both sides of the second rotating member.

[0011] Compared with the prior art, the present application has the following advantages: in the present application, the first rotating member and the third rotating member are respectively rotatably connected to the second rotating member, and a linkage member is provided between the first rotating member and the third rotating member. While ensuring that the three components can be linked to open or fold, the overall volume of the folding joint caused by the coaxial rotation of the three components is avoided, and the structure is novel and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. The drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0013] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not intended to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size, without affecting the efficacy and objectives that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the present application in an expanded state;

[0015] Figure 2 This is a schematic diagram of the connection structure of the first rotating member, the second rotating member and the linkage member when the present application is in the unfolded state;

[0016] Figure 3 This is a schematic diagram of the assembly structure of the present application at a certain angle;

[0017] Figure 4 This is a schematic diagram of the assembly structure of this application from another angle;

[0018] Figure 5 This is a schematic diagram of the structure of the present application when it is in an expanded state and the locking mechanism is in a locked state;

[0019] Figure 6 This is a schematic diagram of the structure of the present application when it is in an unfolded state and the locking mechanism is in an unlocked state;

[0020] Figure 7 This is a side structural diagram of the application in the unfolded state (when the second rotating seat is removed)

[0021] Figure 8 This is a schematic diagram of the side structure of the present application during the folding process (when the second rotating seat is removed)

[0022] Figure 9 This is a side structural diagram of the present application in a folded state (when the second rotating seat is removed)

[0023] Wherein: 1 first rotating member; 101 first rotating portion; 102 auxiliary outer seat; 1021 connecting pipe portion;

[0024] 2 second rotating member; 201 first rotating seat; 202 second rotating seat; 203 main body; 204 first branch; 205 second branch;

[0025] 3 third rotating member; 301 third rotating portion;

[0026] 4 linkage parts;

[0027] 5 Locking mechanism; 501 Lock tongue; 502 First lock slot; 503 Second lock slot. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. It is understood that, in the absence of conflict, some technical means of the various embodiments described herein can be replaced or combined with each other.

[0029] In the description and claims of this application, the terms "first," "second," etc., if used, are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. Thus, a term defined as "first," "second," etc. may explicitly or implicitly include one or more of such objects. Furthermore, "a," "an," and similar terms do not indicate a limitation on quantity, but rather indicate the presence of at least one, and "plurality" means at least two.

[0030] In the description of the specification and claims of this application, if there are terms such as "connect", "install", "fix", "accommodate", etc., unless otherwise specified, they should be understood in a broad sense. For example, "connection" can be a separate connection or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a non-detachable connection or a detachable connection. For another example, "accommodate" does not necessarily mean complete accommodation of the entire body. This concept also includes the accommodation of a part that protrudes from the outside. For those skilled in the art, the specific meanings of the aforementioned terms in this application can be understood according to the specific circumstances.

[0031] In the description and claims of this application, if there are terms such as "upper," "lower," and "horizontal" indicating orientations or positional relationships, these are based on the orientations or positional relationships shown in the accompanying drawings. They are used only to facilitate a clear and simplified description of this application and are not intended to indicate or imply that the elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. These directional terms are relative concepts and are used for relative description and clarification. They may change accordingly depending on the orientation of the components in the drawings. For example, if the device in the figure is turned over, elements described as "below" other elements would be positioned "above" the other elements.

[0032] In the description of the specification and claims of this application, if the term "if" is present, it can generally be interchanged with "when" or "at" or "in response to determining" or "in response to detecting", depending on the context.

[0033] In the description of the specification and claims of this application, if there is a "direction" of movement, including movement with a directional component, the term "in the direction" is not necessarily understood as movement only in that one direction. For those skilled in the art, the specific meaning of the aforementioned terms in this application can be understood according to the specific circumstances.

[0034] like Figures 1 to 9As shown, a folding joint has a folding position and an unfolding position, which includes a first rotating member 1, a second rotating member 2 and a third rotating member 3. The first rotating member 1 and the third rotating member 3 are respectively rotatably connected to the second rotating member 2. The folding joint also includes a linkage member 4 and a locking mechanism 5. The two ends of the linkage member 4 are respectively rotatably connected to the first rotating member 1 and the third rotating member 3. The locking mechanism 5 is arranged between the first rotating member 1 and the second rotating member 2.

[0035] In this embodiment, the first rotating member 1 includes a first rotating portion 101 that extends into and is rotatably connected to the second rotating member 2. The third rotating member 3 includes a third rotating portion 301 that extends into and is rotatably connected to the second rotating member 2. The linkage member 4 is disposed within the second rotating member 2 and is movable relative thereto. The first rotating portion 101 and the third rotating portion 301 are preferably located in the same plane, thereby further reducing the thickness of the folding joint.

[0036] For ease of assembly, the second rotating member 2 is assembled by splicing the first rotating seat 201 and the second rotating seat 202 , and the first rotating part 101 , the third rotating part 301 and the linkage member 4 are all installed between the first rotating seat 201 and the second rotating seat 202 .

[0037] In order to improve the linkage stability between the first rotating member 101 and the third rotating member 301 , the linkage members 4 are preferably two symmetrical ones, and are rotatably connected to both sides of the first rotating part 101 and the third rotating part 301 respectively.

[0038] In this embodiment, the first rotating member 1 further includes an auxiliary outer seat 102 located outside the second rotating member 2 and fixed relative to the first rotating portion 101 and rotating synchronously.

[0039] In this embodiment, the locking mechanism 5 includes a lock tongue 501 mounted on the auxiliary outer seat 102 and capable of sliding and retracting relative thereto. A reset member is provided between the lock tongue 501 and the auxiliary outer seat 102. A first lock slot 502 and a second lock slot 503 are respectively formed on the first rotating portion 101 and the second rotating member 2, into which the lock tongue 501 is locked. In the diagram of this embodiment, the second rotating member 2 has a second lock slot 503 on both the first rotating seat 201 and the second rotating seat 202. An unlocking assembly capable of sliding and retracting the lock tongue 501 is directly or indirectly provided on the auxiliary outer seat 102. Because unlocking assemblies are conventional in the art and have various structures, such as rotating unlocking assemblies, sliding unlocking assemblies, etc., they are not specifically limited or described herein. Any unlocking mechanism capable of sliding the lock tongue 501 out of the first lock slot 502 and the second lock slot 503 is acceptable.

[0040] Among them, the auxiliary outer seat 102 is preferably located on the inner side of the folding joint of the children's appliance, and it has a connecting pipe portion 1021 connected to the cross bar structure on the children's appliance that is relatively fixed to the first rotating part 1. The locking tongue 501 is installed in the connecting pipe portion 1021 and can be laterally extended and retracted relative to it. This design makes better use of the lateral space of the children's appliance without increasing the overall size of the children's appliance, and can avoid the locking mechanism from increasing the thickness of the folding joint due to the requirement of the sliding stroke of the locking tongue; and the unlocking component can also be installed on the corresponding cross bar structure, thereby improving space utilization and making operation more convenient.

[0041] In this embodiment, the second rotating member 2 includes a main body 203 and a first branch 204 and a second branch 205 extending obliquely to both sides from the end of the main body 203. The first rotating member 1 is rotatably connected to the first branch 204, and the third rotating member 3 is rotatably connected to the second branch 205. When the folding joint is folded, the first rotating member 1 rotates around the rotation point between it and the first branch 204, and the third rotating member 3 rotates around the rotation point between it and the second branch 205, so as to be folded to both sides of the second rotating member 2.

[0042] The working principle of this application is:

[0043] When the folding joint is in the expanded position, the locking tongue 501 of the locking mechanism 5 is opposite to the first locking groove 502 and the second locking groove 503 and is locked into the first locking groove 502 and the second locking groove 503 under the action of the reset member, so that the first rotating member 1 and the second rotating member 2 are locked in the expanded position. At this time, the third rotating member 3 is maintained in the expanded position under the linkage action of the linkage member 4.

[0044] When the folding joint needs to be folded, the locking mechanism 5 is unlocked, and then the first rotating member 1 or the third rotating member 3 is rotated to be retracted relative to the second rotating member 2. At this time, the third rotating member 3 or the first rotating member 1 is retracted relative to the second rotating member 2 under the linkage action of the linkage member 4, and finally the first rotating member 1 and the third rotating member 3 are retracted on both sides of the second rotating member 2.

[0045] like Figures 7 to 9 As shown, this application cites a specific implementation of the connection position relationship between the first rotating member 1, the second rotating member 2, the third rotating member 3 and the linkage member 4, and the point motion description during rotation:

[0046] like Figure 7As shown, when the folding joint is in the unfolded position, the second rotating member 2 is tilted with the front higher and the back lower, the first rotating member 1 is rotationally connected to the rear part of the upper end of the second connecting member 2 and is tilted to extend rearward and upward, and the third rotating member 3 is rotationally connected to the front part of the second connecting member 2 and is tilted to extend forward and downward; at this time, the rotation point of the first rotating member 1 and the second rotating member 2 is located above and behind the rotation point of the third rotating member 3 and the second rotating member 2; the rotation point of the linkage member 4 and the first rotating member 1 is located below the rotation point of the first rotating member 1 and the second rotating member 2 and located above and behind the rotation point of the third rotating member 3 and the second rotating member 2; the rotation point of the linkage member 4 and the third rotating member 3 is located below and behind the rotation point of the third rotating member 3 and the second rotating member 2.

[0047] like Figure 8 As shown, the folding joint is in the folding process. When the first rotating member 1 and the third rotating member 3 are retracted relative to the second rotating member 2, the rotation point of the linkage member 4 and the first rotating member 1 rotates from below the rotation point of the first rotating member 1 and the second rotating member 2 to the front thereof, and in the figure, it moves clockwise around the rotation point of the first rotating member 1 and the second rotating member 2; the rotation point of the linkage member 4 and the third rotating member 3 rotates from below and behind the rotation point of the third rotating member 3 and the second rotating member 2 to the rear thereof, and in the figure, it moves counterclockwise around the rotation point of the third rotating member 3 and the second rotating member 2.

[0048] like Figure 9 As shown, when the folding joint is in the folded position, the rotation point of the linkage member 4 and the first rotating member 1 moves to the front and above the rotation point of the first rotating member 1 and the second rotating member 2; the rotation point of the linkage member 4 and the third rotating member 3 moves to the rear and above the rotation point of the third rotating member 3 and the second rotating member 2 and is located in the front and below the rotation point of the first rotating member 1 and the second rotating member 2.

[0049] In the present application, the first rotating member 1 and the third rotating member 3 are respectively rotatably connected to the second rotating member 2, and a linkage member 4 is provided between the first rotating member 1 and the third rotating member 3. While ensuring that the three components can be opened or folded in a linked manner, the overall volume of the folding joint caused by the coaxial rotation of the three components is avoided, and the structure is novel and simple.

[0050] As preferred embodiments of the present application, the reference terms "preferred," "optional," etc., in this specification, mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0051] The above embodiments are merely illustrative of the detailed scheme of the present application. The present application is not limited to the above detailed scheme, which does not mean that the present application must rely on the above detailed scheme to be implemented. Those skilled in the art should understand that any improvements to the present application, equivalent replacement of raw materials of the present application product, addition of auxiliary ingredients, and selection of specific methods, etc., all fall within the scope of protection and disclosure of the present application.

Claims

1. A folding joint having a folded position and an unfolded position, comprising a first rotating member, a second rotating member, and a third rotating member, characterized in that: The first rotating member and the third rotating member are respectively rotatably connected to the second rotating member, and the folding joint further includes a linkage member and a locking mechanism, the two ends of the linkage member are respectively rotatably connected to the first rotating member and the third rotating member, and the locking mechanism is arranged between the first rotating member and the second rotating member; when the folding joint is in the unfolded position, the locking mechanism locks the first rotating member and the second rotating member in the unfolded position, and the third rotating member is maintained in the unfolded position under the linkage action of the linkage member; when the folding joint is in the folded position, the first rotating member and the third rotating member are retracted on both sides of the second rotating member.

2. A folding joint according to claim 1, characterized in that: The first rotating member includes a first rotating portion extending into the second rotating member and rotatably connected thereto, the third rotating member includes a third rotating portion extending into the second rotating member and rotatably connected thereto, and the linkage member is disposed in the second rotating member and movable relative thereto.

3. A folding joint according to claim 2, characterized in that: The second rotating member is assembled by splicing a first rotating seat and a second rotating seat, and the first rotating part, the third rotating part and the linkage member are all installed between the first rotating seat and the second rotating seat.

4. The folding joint according to claim 2, characterized in that: There are two symmetrical linkage members, which are rotatably connected to both sides of the first rotating part and the third rotating part respectively.

5. The folding joint according to claim 2, characterized in that: The first rotating member further includes an auxiliary outer seat located outside the second rotating member and fixed relative to the first rotating portion and rotating synchronously with the first rotating portion.

6. The folding joint according to claim 5, characterized in that: The locking mechanism includes a lock tongue mounted on the auxiliary outer seat and capable of sliding and retracting relative thereto, a reset member is provided between the lock tongue and the auxiliary outer seat, and a first lock groove and a second lock groove for the lock tongue to be locked are respectively formed on the first rotating part and the second rotating member; an unlocking component that can drive the lock tongue to slide and retract is directly or indirectly provided on the auxiliary outer seat.

7. The folding joint according to claim 1, characterized in that: The second rotating member includes a main body and a first branch and a second branch extending obliquely to both sides from the end of the main body. The first rotating member is rotatably connected to the first branch, and the third rotating member is rotatably connected to the second branch. When the folding joint is folded, the first rotating member rotates around the rotation point between it and the first branch, and the third rotating member rotates around the rotation point between it and the second branch, so as to be folded on both sides of the second rotating member.

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