WO-2026091121-A1 - FOLDING JOINT STRUCTURE

WO2026091121A1WO 2026091121 A1WO2026091121 A1WO 2026091121A1WO-2026091121-A1

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.

Inventors

TANG, Weihong

Assignees

昆山威凯儿童用品有限公司

Dates

Publication Date: 20260507
Application Date: 20241104
Priority Date: 20241031

Claims (8)

A folding joint structure includes a first connector, a second connector, and a third connector that are rotatably connected. The structure is characterized by: a locking mechanism between the first connector and the second connector; a locking member between the third connector and the first connector that can be moved to control whether the two are locked; an axially movable member 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; and 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.
According to claim 1, a folding joint structure is 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, wherein 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.
According to claim 2, a folding joint structure is characterized in that: the locking member is a locking gear; the third connecting member and the first connecting member have a first toothed groove and a second toothed groove into which the locking member can be locked; a second reset member is provided between the locking member and the first toothed groove; when the locking member is simultaneously engaged in the first toothed groove and the second toothed groove, the third connecting member and the first connecting member are locked; when the locking member is moved out of the second toothed groove and fully enters the first toothed groove by the movable member, the third connecting member and the first connecting member are unlocked.
According to claim 3, a folding joint structure is characterized in that: the unlocking component is an unlocking button, the rotatable connection of the second connecting component has a button groove for installing the unlocking component, the outer end of the unlocking component is exposed to form a pressing part, and the inner side of the unlocking component has an axially extending barb that passes through the second connecting component and abuts against the extension part of the movable component; when the unlocking component is pressed, its extended barb squeezes inward and pushes the movable component to move axially inward.
According to claim 4, a folding joint structure is characterized in that: the extension 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 connector, and the other side is an abutting portion that abuts against the extension barb of the unlocking member.
According to claim 2, a folding joint structure is characterized in that: the unlocking mechanism includes an unlocking operation component disposed on the first connecting member, the unlocking operation component is connected to the locking block by a traction cable and can drive the locking block to slide, and when the locking block slides along the unlocking direction, it exits the locking groove and releases the locking of the first connecting member and the second connecting member.
According to claim 2, a folding joint structure is characterized in that: 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 member, the locking member, and the second reset member from the inside out and is rotatably connected to the third connector.
According to claim 3, a folding joint structure is 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.

Description

A folding joint structure Technical Field This utility model relates to children's products, and more particularly to a folding joint for children's products. Background Technology 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. Summary of the Invention The purpose of this invention is to provide a novel and easy-to-operate folding joint structure. 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; 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. 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. 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. 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. 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. As a preferred technical solution, the unlocking mechanism includes an unlocking operation component disposed on the first connector. The unlocking operation c