Folding joint structure

Abstract

Disclosed in the present utility model is a folding joint structure. The folding joint structure comprises a first connecting member, a second connecting member, and a third connecting member which are rotatably connected; a locking mechanism is provided between the first connecting member and the second connecting member; a locking member capable of controlling, by means of movement, whether the third connecting member and the first connecting member are locked is provided between the third connecting member and the first connecting member; a movable member capable of axially moving is provided between the locking member and the first connecting member; the movable member partially passes through the first connecting member and mates with an inclined surface of the second connecting member; and an unlocking member capable of pressing and pushing the movable member to move is provided on the second connecting member. When the folding joint is unfolded for use, the locking of the third connecting member can be released by means of the unlocking member alone, so as to adjust whether the third connecting member is opened and adjust the opening angle, and when the folding joint is folded, the first connecting member and the second connecting member can rotate and retract to synchronously release the locking of the third connecting member when the locking mechanism is unlocked, such that the folding operation is more convenient, and single-hand unlocking can be achieved.

Description

A folding joint structure Technical Field

[0001] This utility model relates to children's products, and more particularly to a folding joint for children's products. Background Technology

[0002] In existing technologies, the folding joints used in children's products (such as bassinet and stroller) typically include a first connector, a second connector, and a third connector that rotate. When the children's product is unfolded and locked, the first, second, and third connectors are generally kept in the unfolded state, and none of them can rotate. If one of them needs to be rotated while the other two are unfolded and locked, two locking mechanisms are often required, and these two locking mechanisms are not linked. This makes folding operations inconvenient, requiring the unlocking of different locking mechanisms sequentially, making one-handed unlocking and folding impossible.

[0003] Summary of the Invention

[0004] The purpose of this invention is to provide a novel and easy-to-operate folding joint structure.

[0005] The technical solution of this utility model is: a folding joint structure, including 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 is provided between the third connecting member and the first connecting member that can be moved to control whether the two are locked or not, a movable member that can move axially is provided between the locking member and the first connecting member, the movable member partially passes through the first connecting member and engages with the inclined surface of the second connecting member, and the second connecting member has an unlocking member that can be pressed and pushed to move the movable member;

[0006] When the folding joint is in the unfolded state, the first connecting member and the second connecting member are locked by a locking mechanism, and the third connecting member and the first connecting member are locked by a locking member.

[0007] When the third connector needs to rotate, the locking between the third connector and the first connector can be released by the displacement of the moving part and the locking part driven by the unlocking part. Alternatively, after the locking mechanism is unlocked, when the second connector rotates and retracts relative to the first connector, the moving part moves under the cooperation of the inclined surface of the second connector and drives the locking part to move, thereby releasing the locking between the third connector and the first connector.

[0008] As a preferred technical solution, the locking mechanism includes a locking block that is slidably installed in the mounting groove of the first connector and can extend relative to it, a first reset member disposed between the locking block and the first connector, a locking groove disposed on the second connector and into which the locking block can be locked when in the unfolded state, and an unlocking mechanism that can drive the locking block to slide. The unlocking mechanism releases the locking of the first connector and the second connector by driving the locking block to slide out of the locking groove.

[0009] 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 into which the locking member can be locked. A second reset member is provided between the locking member and the first tooth groove. When the locking member is simultaneously engaged 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 moved out of the second tooth groove and fully entered the first tooth groove by the movable member, the third connecting member and the first connecting member are unlocked.

[0010] As a preferred technical solution, the unlocking component is an unlocking button. The rotating connection of the second connector has a button groove for installing the unlocking component. The outer end of the unlocking component is exposed to form a pressing part. The inner side of the unlocking component has an extending barb that extends axially and passes through the second connector to abut against the extension of the movable component. When the unlocking component is pressed, its extending barb squeezes inward and pushes the movable component to move axially inward.

[0011] As a preferred technical solution, the extension of the movable part is an axially extending extension strip, one side of which is a sloped guide that cooperates with the slope of the second connector, and the other side is an abutting part that abuts against the extension barb of the unlocking part.

[0012] As a preferred technical solution, the unlocking mechanism includes an unlocking operation component disposed on the first connector. The unlocking operation component is connected to the lock block via a traction cable and can drive the lock block to slide. When the lock block slides along the unlocking direction, it exits the lock groove and releases the lock of the first connector and the second connector.

[0013] As a preferred technical solution, the rotational connection points of the second connector, the first connector, and the third connector are coaxially rotatably connected from the inside out; the second connector has an axially extending connecting shaft, which passes through the first connector, the movable part, the locking part, and the second reset part from the inside out and is rotatably connected to the third connector.

[0014] As a preferred technical solution, the locking member includes a disc-shaped portion and a plurality of limiting protrusions evenly arranged on the outer periphery of the disc-shaped portion; the outer periphery 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 with the tooth groove portions at different positions of the first connecting member through each limiting protrusion.

[0015] Compared with the prior art, this application has the following advantages: The present invention has a novel structural design. When the folding joint is unfolded, the limiting lock on the third connecting member can be released by the unlocking component alone, so as to adjust whether the third connecting member is open or not and the opening angle. When the folding joint is folded, the limiting lock on the third connecting member can be released simultaneously by the rotation of 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 for additional operation of the unlocking component. This design makes the folding operation simpler and faster, and can be unlocked with one hand. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 is a three-dimensional structural diagram of the joint of the upper frame of the sleeping basket according to this utility model;

[0019] Figure 2 is a schematic diagram of the side sectional view of Figure 1;

[0020] Figure 3 is a schematic diagram of the assembly structure of Figure 1 when it is at a certain angle;

[0021] Figure 4 is a schematic diagram of the assembly structure of Figure 1 when it is viewed from another angle;

[0022] Figure 5 is a schematic diagram of the assembly structure when the right joint of the upper frame in Figure 1 is at a certain angle.

[0023] Figure 6 is a schematic diagram of the assembly structure when the left joint of the upper frame in Figure 1 is at a certain angle.

[0024] Figure 7 is a schematic diagram of the assembly structure when the left joint of the upper frame in Figure 1 is at another angle.

[0025] Figure 8 is a schematic cross-sectional view of the joint of the upper frame in Figure 1.

[0026] Figure 9 is a structural schematic diagram of the present invention during the folding process;

[0027] Figure 10 is a schematic diagram of the structure of this utility model after folding.

[0028] Wherein: 1 is the first connecting member; 101 is the second toothed groove;

[0029] 2. Second connector; 201. Button slot; 202. Connecting shaft; 203. Guide slope;

[0030] 3. Third connector; 301. First toothed groove;

[0031] 4. Locking mechanism; 401. Lock block; 402. Lock slot; 403. Mounting slot; 404. Unlocking operation component;

[0032] 5. Locking component; 501. Disc-shaped part; 502. Limiting tooth;

[0033] 6. Moving parts; 601. Angled guide part; 602. Abutting part;

[0034] 7 unlocking parts; 701 extended barbs;

[0035] 8. Second reset component. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It is understood that, without conflict, some technical means of the various embodiments described herein can be substituted for or combined with each other.

[0037] In the description of this application and the claims, the terms "first," "second," etc., are used only to distinguish the described objects and have no sequential or technical meaning. Therefore, objects specified with "first," "second," etc., may explicitly or implicitly include one or more of those objects. Furthermore, the words "one" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one, while "multiple" indicates not less than two.

[0038] In the description of this application and the claims, the terms "connection," "installation," "fixation," and "reception," unless otherwise specified, should be interpreted broadly. For example, "connection" can mean a separate connection or an integral connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean a non-detachable connection or a detachable connection. As another example, "reception" does not necessarily mean complete containment; this concept also includes the containment of a portion that protrudes externally. Those skilled in the art can understand the specific meaning of the aforementioned terms in this application based on the specific circumstances.

[0039] In the description of this application and the claims, if terms such as "above," "below," or "horizontal" indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, they are only for the purpose of clearly and simply describing this application, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation. These directional terms are relative concepts used for relative description and clarification, and may change accordingly depending on the orientation of the components in the drawings. For example, if the device in the drawings is flipped, an element described as "below" other elements will be positioned "above" other elements.

[0040] In the description of this application specification and claims, the term "if" is generally interchangeable with "when," "at," "in response to determination," or "in response to detection," depending on the context.

[0041] In the description of this application and the claims, if there is a "direction" of motion, including motion with a directional component, the term "in direction" is not necessarily understood as motion only in that one direction. Those skilled in the art can understand the specific meaning of the aforementioned terms in this application according to the specific circumstances.

[0042] As shown in Figures 1 to 10, 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 is provided between the third connecting member 3 and the first connecting member 1, which can be moved to control whether the two are locked or not. An axially 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 engages 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 pushed to move the movable member 6.

[0043] In this embodiment, the locking mechanism 4 includes a locking block 401 that is slidably installed in the mounting groove 403 of the first connector 1 and can extend relative to it, a first reset member disposed between the locking block 401 and the first connector 1, a locking groove 402 disposed on the second connector 2 and which 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.

[0044] In this embodiment, the unlocking mechanism includes an unlocking operation component 404 disposed on the first connector 1. The unlocking operation component 404 is connected to the lock block 401 via a traction cable and can drive the lock block 401 to slide. When the lock block 401 slides along the unlocking direction, it exits the lock groove 402 and releases the lock of the first connector 1 and the second connector 2.

[0045] The unlocking operation component 404 is preferably a rotation unlocking handle component or a press unlocking component. Since the unlocking operation component is diverse in this technical field, it can also be other unlocking components that can drive the lock block 401 to slide; therefore, it will not be specifically described or limited here.

[0046] In this embodiment, the locking member 5 is a locking gear. The third connecting member 3 and the first connecting member 1 have a first tooth groove 301 and a second tooth groove 101 into which the locking member 5 can be locked. 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 engaged 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 moved out of the second tooth groove 101 by the moving member 6 and fully enters the first tooth groove 301, the third connecting member 3 and the first connecting member 1 are unlocked.

[0047] 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 periphery 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 engaging with the tooth groove portions at different positions of the first connecting member 1 through the locking protrusions 502.

[0048] In this embodiment, the unlocking component 7 is preferably an unlocking button. The rotatable connection of the second connecting component 2 has a button groove 201 for mounting the unlocking component 7. The outer end of the unlocking component 7 is exposed to form a pressing part. The inner side of the unlocking component 7 has an axially extending barb 701 that passes through the second connecting component 2 and abuts against the extension of the movable component 6. When the unlocking component 7 is pressed, its axially extending barb 701 presses inward and pushes the movable component 6 to move axially inward.

[0049] In this embodiment, the extension of the movable member 6 is an axially extending extension strip. One side of the extension strip is a sloped guide portion 601 that engages with the sloped guide surface 203 of the second connector 2, and the other side is an abutting portion 602 that abuts against the extension barb 701 of the unlocking member 7. Preferably, the sloped guide surface 203 is recessed and formed on the side end face of the second connector 2 near the movable member 6.

[0050] In this embodiment, the rotational connection points of the second connector 2, the first connector 1, and the third connector 3 are coaxially rotatably connected from the inside out; the second connector 2 has an axially extending connecting shaft 202, which passes through the first connector 1, the movable member 6, the locking member 5, and the second reset member 8 from the inside out and is rotatably connected to the third connector 3.

[0051] The working principle of this utility model is as follows:

[0052] When the folding joint is in the unfolded state, the first connecting member 1 and the second connecting member 2 are locked by the locking mechanism 4. The third connecting member 3 and the first connecting member 1 are locked by the locking member simultaneously engaging 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 rotate, the unlocking member 7 can drive the movable member 6 to move axially inward and push the locking member to move axially inward, causing it to exit the second slot 101 and release the lock between the third connecting member 3 and the first connecting member 1. At this time, the third connecting member 3 can rotate freely to adjust whether the third connecting member 3 is open or not and the opening angle of the third connecting member 3.

[0053] When the folding joint needs to be folded, the following folding and retraction operation method is preferred:

[0054] First, the unlocking operation component 404 is unlocked. The unlocking operation component 404 moves the locking block 401 out of the locking groove 402 of the second connector 2 by the traction cable, thereby releasing the lock between the first connector 1 and the second connector 2.

[0055] Then, rotate the second connector 2 so that it retracts relative to the first connector 1. At this time, the movable part 6 moves axially inward under the cooperation of the inclined surface of the second connector 2, and pushes the locking part 5 to move axially out of the second slot 101 and fully enter the first slot 301, thereby releasing the lock between the third connector 3 and the first connector 1.

[0056] Finally, the third connector 3 is rotated and folded relative to the first connector 1 and the second connector 2 to complete the folding and folding of the entire joint.

[0057] This utility model features a novel structural design. When the folding joint is unfolded, the locking of the third connecting member 3 can be released independently via the unlocking component 7, allowing adjustment of whether the third connecting member 3 is open and its opening angle. When the folding joint is folded, the locking of the third connecting member 3 can be released simultaneously by rotating the second connecting member 2 relative to the first connecting member 1 while the locking mechanism 4 is unlocked. The entire folding joint can be unlocked without the need for additional operation of the unlocking component 7. This design makes the folding operation simpler and faster, and allows for one-handed unlocking.

[0058] When this folding joint needs to be folded, it can also be folded and folded in the following way:

[0059] First, press the unlocking part 7, and by pushing the movable part 6 to move axially inward, the locking part 5 will be moved axially, causing it to exit the second slot 101 and release the lock between the third connecting part 3 and the first connecting part 1. At this time, rotate the third connecting part 3 to the position of the first connecting part 1 or the second connecting part 2.

[0060] Then, the unlocking operation component 404 is unlocked. The unlocking operation component 404 drives the lock block 401 to move out of the lock groove 402 of the second connector 2 through the traction cable, thereby releasing the lock of the first connector 1 and the second connector 2.

[0061] Finally, rotate the first connector 1 and the second connector 2 to close them, completing the folding and closing of the entire joint.

[0062] Compared with the preferred folding and retracting operation method of the present invention, it requires pressing the unlocking part 7 first, and then the overall folding and retracting can also be achieved by changing the order of rotation of the parts.

[0063] [Correction 21.11.2024 according to Rule 91] As shown in Figures 1 to 10, this folding joint structure can be used on a child's bassinet that can be folded up and down. The first connector 1 is the front rail of the upper frame, the second connector 2 is the rear rail of the upper frame, and the third connector 3 is the canopy rod.

[0064] This folding joint structure can also be used in the push rod joint of a stroller. The first connector 1 is the upper push rod, the second connector 2 is the lower push rod, and the third connector 3 is the canopy rod.

[0065] In addition, this folding joint structure can also be used at the front armrest joint of a stroller or at different folding points of other children's products. Since the application of this folding joint is something that those skilled in the art can conceive of, it will not be described in detail or limited here.

[0066] As a preferred embodiment of the present invention, in the description of this specification, the reference to terms such as "preferred," "optional," etc., means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions 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 one or more embodiments or examples.

[0067] The above embodiments are only used to illustrate the detailed solutions of the present invention. The present invention is not limited to the above detailed solutions, that is, it does not mean that the present invention must rely on the above detailed solutions to be implemented. Those skilled in the art should understand that any improvements to the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. A folding joint structure, comprising a first connecting member, a second connecting member, and a third connecting member for rotatable connection, characterized in that: A locking mechanism is provided between the first connector and the second connector. A locking member is provided between the third connector and the first connector, which can be moved to control whether the two are locked or not. An axially movable member is provided between the locking member and the first connector. The movable member partially passes through the first connector and engages with the inclined surface of the second connector. The second connector has an unlocking member that can be pressed and pushed to move the movable member. When the folding joint is in the unfolded state, the first connecting member and the second connecting member are locked by a locking mechanism, and the third connecting member and the first connecting member are locked by a locking member. When the third connector needs to rotate, the locking between the third connector and the first connector can be released by the displacement of the moving part and the locking part driven by the unlocking part. Alternatively, after the locking mechanism is unlocked, when the second connector rotates and retracts relative to the first connector, the moving part moves under the cooperation of the inclined surface of the second connector and drives the locking part to move, thereby releasing the locking between the third connector and the first connector.

2. The folding joint structure according to claim 1, characterized in that: The locking mechanism includes a locking block that is slidably installed in the mounting groove of the first connector and can extend relative to it, a first reset member disposed between the locking block and the first connector, a locking groove disposed on the second connector and into which the locking block can be locked when in the unfolded state, and an unlocking mechanism that can drive the locking block to slide. The unlocking mechanism releases the locking of the first connector and the second connector by driving the locking block to slide out of the locking groove.

3. A folding joint structure according to claim 2, characterized in that: The locking element is a locking gear. The third connecting member and the first connecting member have a first tooth groove and a second tooth groove into which the locking element can be locked. A second reset member is provided between the locking element and the first tooth groove. When the locking element is simultaneously engaged in the first tooth groove and the second tooth groove, the third connecting member and the first connecting member are locked. When the locking element is moved out of the second tooth groove and fully entered the first tooth groove by the movable member, the third connecting member and the first connecting member are unlocked.

4. A folding joint structure according to claim 3, characterized in that: The unlocking component is an unlocking button. The rotating connection of the second connector has a button groove for installing the unlocking component. The outer end of the unlocking component is exposed to form a pressing part. The inner side of the unlocking component has an axially extending barb that passes through the second connector and abuts against the extension of the movable component. When the unlocking component is pressed, its extended barb squeezes inward and pushes the movable component to move axially inward.

5. A folding joint structure according to claim 4, characterized in that: The extension of the movable part is an axially extending extension bar. One side of the extension bar is a sloping guide that mates with the sloping surface of the second connector, and the other side is a contacting part that abuts against the extended barb of the unlocking part.

6. A folding joint structure according to claim 2, characterized in that: The unlocking mechanism includes an unlocking operation component disposed on the first connector. The unlocking operation component is connected to the lock block via a traction cable and can drive the lock block to slide. When the lock block slides along the unlocking direction, it exits the lock groove and releases the lock of the first connector and the second connector.

7. A folding joint structure according to claim 2, characterized in that: The second connector, the first connector, and the third connector are rotatably connected from the inside out at their rotational connection points; the second connector has an axially extending connecting shaft that passes through the first connector, the movable member, the locking member, and the second reset member from the inside out and is rotatably connected to the third connector.

8. A 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 periphery of the disc-shaped portion; the outer periphery 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 with the tooth groove portions at different positions of the first connecting member through each limiting protrusion.

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