Folding joint structure

Abstract

The utility model discloses a folding joint structure which comprises a first connecting piece, a second connecting piece and a third connecting piece which are rotationally connected, a locking mechanism is arranged between the first connecting piece and the second connecting piece, and a locking piece capable of controlling whether the third connecting piece and the first connecting piece are locked or not through movement is arranged between the third connecting piece and the first connecting piece. A movable piece capable of axially moving is arranged between the locking piece and the first connecting piece, the movable piece partially penetrates through the first connecting piece and is matched with the inclined surface of the second connecting piece, and the second connecting piece is provided with an unlocking piece capable of pressing and pushing the movable piece to move; when the folding joint is unfolded for use, the third connecting piece can be unlocked independently through the unlocking piece, so that whether the third connecting piece is opened or not and the opening angle can be adjusted; when the folding joint is folded, locking of the third connecting piece can be synchronously relieved through rotating and folding of the first connecting piece and the second connecting piece when the locking mechanism is unlocked, so that folding operation is more convenient, and single-hand unlocking can be achieved.

Description

Technical Field

[0001] The utility model relates to a children's appliance, in particular to a folding joint for the children's appliance. Background Art

[0002] In the prior art, folding joints used in child products (such as child sleepers and strollers) typically include a first, second, and third connecting member that are rotatably connected. When the child product is unfolded and locked, the first, second, and third connecting members are generally kept in the unfolded state, and none of them can rotate. If one of the connecting members needs to be rotated while the other two are unfolded and locked, two locking mechanisms are often required, and there is no linkage between the two locking mechanisms. This makes folding operation relatively inconvenient, as different locking mechanisms need to be unlocked one by one, making single-handed unlocking and folding impossible. Summary of the Invention

[0003] The purpose of the utility model is to provide a folding joint structure which is novel in structure and convenient in operation.

[0004] The technical solution of the utility model is: a folding joint structure, comprising a first connecting member, a second connecting member and a third connecting member that are rotatably connected, a locking mechanism is provided between the first connecting member and the second connecting member, a locking member that can be controlled by movement to lock the third connecting member and the first connecting member, an axially movable movable member is provided between the locking member and the first connecting member, the movable member partially passes through the first connecting member and cooperates with the inclined surface of the second connecting member, and the second connecting member has an unlocking member that can be pressed and can push the movable member to move;

[0005] When the folding joint is in an unfolded state, the first connecting member and the second connecting member are locked by the locking mechanism, and the third connecting member and the first connecting member are locked by the locking member;

[0006] When the third connecting member needs to be rotated, the unlocking member can drive the movable member and the locking member to move to release the lock between the third connecting member and the first connecting member, or after the locking mechanism is unlocked, when the second connecting member is rotated and retracted relative to the first connecting member, the movable member moves in cooperation with the inclined surface of the second connecting member and drives the locking member to move to release the lock between the third connecting member and the first connecting member.

[0007] As a preferred technical solution, the locking mechanism includes a locking block slidably installed in the installation groove of the first connecting member and can extend relative to it, a first reset member arranged between the locking block and the first connecting member, a locking groove arranged on the second connecting member and for the locking block to be locked into when in the unfolded state, and an unlocking mechanism that can drive the locking block to slide. The unlocking mechanism releases the lock of the first connecting member and the second connecting member by driving the locking block to slide out of the locking groove.

[0008] As a preferred technical solution, the locking member is a locking gear, and the third connecting member and the first connecting member have a first tooth groove and a second tooth groove for the locking member to be locked into, and a second reset member is provided between the locking member and the first tooth groove; when the locking member is simultaneously stuck in the first tooth groove and the second tooth groove, the third connecting member and the first connecting member are locked; when the locking member is driven by the movable member to move out of the second tooth groove and completely enter the first tooth groove, the third connecting member and the first connecting member are unlocked.

[0009] As a preferred technical solution, the unlocking member is an unlocking button, the rotating connection of the second connecting member has a button groove for installing the unlocking member, the outer end of the unlocking member is exposed to form a pressing portion, and the inner side of the unlocking member has an extended barb that extends axially and passes through the second connecting member and contacts the extended portion of the movable member; when the unlocking member is pressed, the extended barb is squeezed inward and pushes the movable member to move axially inward.

[0010] As a preferred technical solution, the extension portion of the movable part is an axially extending extension strip, one side of the extension strip is a sloped guide portion that cooperates with the slope of the second connecting part, and the other side is a conflicting portion that conflicts with the extended barb of the unlocking part.

[0011] As a preferred technical solution, the unlocking mechanism includes an unlocking operating component arranged on the first connecting member, and the unlocking operating component is connected to the locking block through a traction rope and can drive the locking block to slide. When the locking block slides along the unlocking direction, it exits the locking slot and releases the lock of the first connecting member and the second connecting member.

[0012] As a preferred technical solution, the rotational connections of the second connecting member, the first connecting member and the third connecting member are coaxially connected from the inside to the outside; the second connecting member has an axially extending connecting shaft, which passes through the first connecting member, the movable member, the locking member, and the second reset member from the inside to the outside and is rotationally connected to the third connecting member.

[0013] As a preferred technical solution, the locking member includes a disc-shaped portion and a plurality of limiting protrusions evenly arranged on the outer circumference of the disc-shaped portion; the outer circumferences of the first tooth groove and the second tooth groove are respectively a plurality of tooth groove portions corresponding to the limiting protrusions of the locking member; the locking member can realize the gear adjustment of the third connecting member by engaging the limiting protrusions with the tooth groove portions at different positions of the first connecting member.

[0014] Compared with the prior art, the present application has the following advantages: the structural design of the utility model is novel. When the folding joint is unfolded for use, the limit lock on the third connecting member can be released by the unlocking member alone, so as to adjust whether the third connecting member is opened or not and the opening angle; when the folding joint is folded, the limit lock on the third connecting member can be released synchronously by rotating and retracting the first connecting member relative to the second connecting member when the locking mechanism is unlocked. The entire folding joint can be unlocked without the need to operate the unlocking member separately. This design makes the folding operation simpler and faster, and can be unlocked with one hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in this specification so as to facilitate understanding and reading by those familiar with this technology. They are not intended to limit the conditions under which the present invention 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 the present invention, should still fall within the scope of the technical contents disclosed in the present invention.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the joint of the upper frame of the sleeping basket of the utility model;

[0018] Figure 2 for Figure 1 A schematic side cross-sectional structural diagram;

[0019] Figure 3 for Figure 1 Schematic diagram of the assembly structure at a certain angle;

[0020] Figure 4 for Figure 1 Schematic diagram of the assembly structure at another angle;

[0021] Figure 5 for Figure 1Schematic diagram of the assembly structure when the right joint of the middle upper frame is at a certain angle;

[0022] Figure 6 for Figure 1 Schematic diagram of the assembly structure when the left joint of the middle upper frame is at a certain angle;

[0023] Figure 7 for Figure 1 Schematic diagram of the assembly structure when the left joint of the middle upper frame is at another angle;

[0024] Figure 8 for Figure 1 Schematic diagram of the cross-section structure at the joint of the middle and upper frame;

[0025] Figure 9 This is a schematic diagram of the structure of the utility model during the folding process;

[0026] Figure 10 It is a schematic diagram of the structure of the utility model after folding.

[0027] Wherein: 1 first connecting member; 101 second tooth groove;

[0028] 2 second connecting member; 201 button slot; 202 connecting shaft; 203 guide slope;

[0029] 3 third connecting member; 301 first tooth groove;

[0030] 4 locking mechanism; 401 locking block; 402 locking slot; 403 mounting slot; 404 unlocking operation component;

[0031] 5 locking member; 501 disc-shaped portion; 502 limiting protruding teeth;

[0032] 6 movable part; 601 inclined guide portion; 602 contact portion;

[0033] 7 unlocking member; 701 extension barb;

[0034] 8. Second reset member. DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] like Figures 1 to 10As shown, a folding joint structure includes a first connecting member 1, a second connecting member 2 and a third connecting member 3 that are rotatably connected. A locking mechanism 4 is provided between the first connecting member 1 and the second connecting member 2. A locking member 5 that can be moved to control whether the two are locked is provided between the third connecting member 3 and the first connecting member 1. An axially movable movable member 6 is provided between the locking member 5 and the first connecting member 1. The movable member 6 partially passes through the first connecting member 1 and cooperates with the inclined surface of the second connecting member 2. The second connecting member 2 has an unlocking member 7 that can be pressed and can push the movable member 6 to move.

[0042] In this embodiment, the locking mechanism 4 includes a locking block 401 that is slidably installed in the installation groove 403 of the first connecting member 1 and can extend relative to it, a first reset member arranged between the locking block 401 and the first connecting member 1, a locking groove 402 that is arranged on the second connecting member 2 and can be locked into by the locking block 401 when in the unfolded state, and an unlocking mechanism that can drive the locking block 401 to slide.

[0043] In this embodiment, the unlocking mechanism includes an unlocking operating component 404 arranged on the first connecting member 1. The unlocking operating component 404 is connected to the locking block 401 through a traction rope and can drive the locking block 401 to slide. When the locking block 401 slides along the unlocking direction, it exits the locking slot 402 and releases the lock of the first connecting member 1 and the second connecting member 2.

[0044] The unlocking operation component 404 is preferably a rotating unlocking handle component or a pressing unlocking component. Since the unlocking operation component is diverse in the art, it can also be other unlocking components that can drive the lock block 401 to slide, so no specific details or limitations are given here.

[0045] In this embodiment, the locking member 5 is a locking gear, and the third connecting member 3 and the first connecting member 1 have a first tooth groove 301 and a second tooth groove 101 for the locking member 5 to be locked into, and a second reset member 8 is provided between the locking member 5 and the first tooth groove 301; when the locking member 5 is simultaneously stuck in the first tooth groove 301 and the second tooth groove 101, the third connecting member 3 and the first connecting member 1 are locked; when the locking member 5 is driven by the movable member 6 to move out of the second tooth groove 101 and completely enter the first tooth groove 301, the third connecting member 3 and the first connecting member 1 are unlocked.

[0046] In which, the locking member 5 includes a disc-shaped portion 501 and a plurality of limiting protrusions 502 evenly arranged on the outer periphery of the disc-shaped portion; the outer peripheries of the first tooth groove 301 and the second tooth groove 101 are respectively a plurality of tooth groove portions corresponding to the limiting protrusions 502 of the locking member 5; the locking member 5 can realize the gear adjustment of the third connecting member 3 by snapping together each limiting protrusion 502 with the tooth groove portions at different positions of the first connecting member 1.

[0047] In this embodiment, the unlocking member 7 is preferably an unlocking button, and the rotating connection of the second connecting member 2 has a button groove 201 for installing the unlocking member 7. The outer end of the unlocking member 7 is exposed to form a pressing portion, and the inner side of the unlocking member 7 has an extended hook 701 that extends axially and passes through the second connecting member 2 and contacts the extended portion of the movable member 6; when the unlocking member 7 is pressed, the extended hook 701 is squeezed inward and pushes the movable member 6 to move axially inward.

[0048] In this embodiment, the extension portion of the movable member 6 is an axially extending extension strip. One side of the extension strip comprises an inclined guide portion 601 that engages with the inclined guide surface 203 of the second connecting member 2, and the other side comprises an interfering portion 602 that interferes with the extended barb 701 of the unlocking member 7. The inclined guide surface 203 is preferably formed inwardly on the side end surface of the second connecting member 2 adjacent to the movable member 6 in a concave shape.

[0049] In this embodiment, the rotational connections of the second connecting member 2, the first connecting member 1 and the third connecting member 3 are coaxially connected from the inside to the outside; the second connecting member 2 has an axially extending connecting shaft 202, which passes through the first connecting member 1, the movable member 6, the locking member 5, the second reset member 8 from the inside to the outside and is then rotationally connected to the third connecting member 3.

[0050] The working principle of this utility model is:

[0051] When the folding joint is in the unfolded use state, the first connecting member 1 and the second connecting member 2 are unfolded and locked by the locking mechanism 4, and the third connecting member 3 and the first connecting member 1 are locked by the locking member while being clamped in the first slot 301 and the second slot 101. At this time, the third connecting member 3 remains in the unfolded position and cannot rotate relative to the unfolded first connecting member 1 and the second connecting member 2; when the third connecting member 3 needs to be rotated, the unlocking member 7 can drive the movable member 6 to move axially inward, and push the locking member to move axially inward, so that it exits the second slot 101 and releases the lock between the third connecting member 3 and the first connecting member 1. At this time, the third connecting member 3 can be rotated at will to adjust whether the third connecting member 3 is opened or not and the opening angle of the third connecting member 3.

[0052] When the folding joint needs to be folded, the following folding and retracting operation method is preferred:

[0053] First, the unlocking operation component 404 is unlocked. The unlocking operation component 404 drives the locking block 401 to move out of the locking slot 402 of the second connecting member 2 through the traction rope, thereby releasing the lock between the first connecting member 1 and the second connecting member 2.

[0054] Then, the second connecting member 2 is rotated so that it is retracted relative to the first connecting member 1. At this time, the movable member 6 moves axially inward in cooperation with the inclined surface of the second connecting member 2, and pushes the locking member 5 to move axially out of the second slot 101 and completely enter the first slot 301 to release the lock between the third connecting member 3 and the first connecting member 1.

[0055] Finally, the third connecting member 3 is rotated and folded relative to the first connecting member 1 and the second connecting member 2 to complete the folding and folding of the entire joint.

[0056] The utility model has a novel structural design. When the folding joint is unfolded for use, the limit lock of the third connecting member 3 can be released by the unlocking member 7 alone, so as to adjust whether the third connecting member 3 is opened or not and the opening angle of the third connecting member 3; when the folding joint is folded, the lock of the third connecting member 3 can be synchronously released by rotating and retracting the second connecting member 2 relative to the first connecting member 1 when the locking mechanism 4 is unlocked, and the entire folding joint can be unlocked without additional operation of the unlocking member 7. This design makes the folding operation simpler and faster, and can be unlocked with one hand.

[0057] When the folding joint needs to be folded, the following folding and collapsing operations can also be performed:

[0058] First, press the unlocking member 7 to push the movable member 6 axially inward, thereby driving the locking member 5 to axially displace, so that it exits the second engaging groove 101 and releases the lock between the third connecting member 3 and the first connecting member 1. At this time, the third connecting member 3 is rotated to the position of the first connecting member 1 or the second connecting member 2.

[0059] Then, the unlocking operation component 404 is unlocked. The unlocking operation component 404 drives the locking block 401 to move out of the locking groove 402 of the second connecting member 2 through the traction rope, thereby releasing the lock of the first connecting member 1 and the second connecting member 2.

[0060] Finally, the first connecting member 1 and the second connecting member 2 are rotated and folded together to complete the folding and folding of the entire joint.

[0061] Compared with the preferred folding and folding operation mode of the above-mentioned utility model, it is necessary to press the unlocking member 7 first, and then the overall folding and folding can be achieved by changing the rotation order of the components.

[0062] This folding joint structure can be used on a child sleeping basket that can be folded forward and backward. The first connecting member 1 is the front rod of the upper frame, the second connecting member 2 is the rear rod of the upper frame, and the third connecting member 3 is the canopy rod.

[0063] This folding joint structure can also be used for the push rod joint of a child stroller, wherein the first connecting member 1 is an upper push rod, the second connecting member 2 is a lower push rod, and the third connecting member 3 is a canopy rod.

[0064] In addition, this folding joint structure can also be used for the front armrest joint of a stroller, or different folding parts of other children's toys. Since the use of this folding joint is conceivable by staff in this technical field, it will not be specifically described or limited here.

[0065] In the description of this specification, the use of terms such as "preferred" or "optional" as preferred embodiments of the present invention indicates 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0066] The above embodiments are merely illustrative of the detailed embodiments of the present invention. The present invention is not limited to the detailed embodiments described above, nor does it necessarily rely on the detailed embodiments to be implemented. Those skilled in the art will appreciate that any improvements to the present invention, equivalent replacements of raw materials for the products of the present invention, addition of auxiliary ingredients, and selection of specific methods, etc., fall within the scope of protection and disclosure of the present invention.

Claims

1. A folding joint structure, comprising a first connecting member, a second connecting member, and a third connecting member that are rotatably connected, characterized in that: A locking mechanism is provided between the first connecting member and the second connecting member, a locking member is provided between the third connecting member and the first connecting member, and the locking member can be controlled by movement to lock the two. A movable member that can move axially is provided between the locking member and the first connecting member, and the movable member partially passes through the first connecting member and cooperates with the inclined surface of the second connecting member. The second connecting member has an unlocking member that can be pressed to push the movable member to move. When the folding joint is in an unfolded state, the first connecting member and the second connecting member are locked by the locking mechanism, and the third connecting member and the first connecting member are locked by the locking member; When the third connecting member needs to be rotated, the unlocking member can drive the movable member and the locking member to move to release the lock between the third connecting member and the first connecting member, or after the locking mechanism is unlocked, when the second connecting member is rotated and retracted relative to the first connecting member, the movable member moves in cooperation with the inclined surface of the second connecting member and drives the locking member to move to release the lock between the third connecting member and the first connecting member.

2. A folding joint structure according to claim 1, characterized in that: The locking mechanism includes a locking block slidably mounted in a mounting groove of the first connecting member and capable of extending relative thereto, a first restoring member arranged between the locking block and the first connecting member, a locking groove provided on the second connecting member and capable of being locked into by the locking block in the unfolded state, and an unlocking mechanism capable of driving the locking block to slide, wherein the unlocking mechanism releases the locks of the first connecting member and the second connecting member by driving the locking block to slide out of the locking groove.

3. The folding joint structure according to claim 2, characterized in that: The locking member is a locking gear, and the third connecting member and the first connecting member have a first tooth groove and a second tooth groove for the locking member to be locked into, and a second reset member is provided between the locking member and the first tooth groove; when the locking member is simultaneously stuck in the first tooth groove and the second tooth groove, the third connecting member and the first connecting member are locked; when the locking member is driven by the movable member to move out of the second tooth groove and completely enter the first tooth groove, the third connecting member and the first connecting member are unlocked.

4. The folding joint structure according to claim 3, characterized in that: The unlocking member is an unlocking button, and the rotating connection of the second connecting member has a button groove for installing the unlocking member. The outer end of the unlocking member is exposed to form a pressing portion, and the inner side of the unlocking member has an extended hook that extends axially and passes through the second connecting member and contacts the extended portion of the movable member; when the unlocking member is pressed, the extended hook squeezes inward and pushes the movable member to move axially inward.

5. The folding joint structure according to claim 4, characterized in that: The extension portion of the movable member is an axially extending extension strip, one side of the extension strip is an inclined guide portion that cooperates with the inclined surface of the second connecting member, and the other side is an interference portion that interferes with the extended barb of the unlocking member.

6. The folding joint structure according to claim 2, characterized in that: The unlocking mechanism includes an unlocking operating component arranged on the first connecting member. The unlocking operating component is connected to the locking block through a traction rope and can drive the locking block to slide. When the locking block slides along the unlocking direction, it exits the locking slot and releases the lock of the first connecting member and the second connecting member.

7. The folding joint structure according to claim 2, characterized in that: The rotational connections of the second connecting member, the first connecting member and the third connecting member are coaxially connected from the inside to the outside; the second connecting member has an axially extending connecting shaft, which passes through the first connecting member, the movable member, the locking member, the second reset member from the inside to the outside and is then rotationally connected to the third connecting member.

8. The folding joint structure according to claim 3, characterized in that: The locking member includes a disc-shaped portion and a plurality of limiting protrusions evenly arranged on the outer circumference of the disc-shaped portion; the outer circumferences of the first tooth groove and the second tooth groove are respectively a plurality of tooth groove portions corresponding to the limiting protrusions of the locking member; the locking member can realize the gear adjustment of the third connecting member by engaging the limiting protrusions with the tooth groove portions at different positions of the first connecting member.

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