US-12622528-B2 - Self-locking mechanism and folding sofa

US12622528B2US 12622528 B2US12622528 B2US 12622528B2US-12622528-B2

Abstract

A self-locking mechanism and a folding sofa are provided. The self-locking mechanism includes a support member, a locking member, a drive member and a switch member. The support member has a first end and a second end opposite to each other. The locking member has a first connection portion and a locking portion, and the first connection portion of the locking member is pivotally connected to the first end of the support member. One end of the drive member is pivotally connected to the first connection portion of the locking member. The switch member has a second connection portion and a switch portion, where the second connection portion of the switch member is pivotally connected to the second end of the support member and the other end of the drive member.

Inventors

JIGUAN CHEN
Bin Chen
QIANGQIANG WU
BAOLI ZHANG
Chong Ma

Assignees

JIAXING REST FURNITURE & APPLIANCE CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20240513
Priority Date: 20230906

Claims (16)

1 . A self-locking mechanism, configured to automatically lock a folding bedstead of a folding sofa, comprising: a support member, wherein the support member has a first end and a second end opposite to each other; a locking member, wherein the locking member has a first connection portion and a locking portion, the first connection portion of the locking member is pivotally connected to the first end of the support member; a drive member, wherein a first end of the drive member is pivotally connected to the first connection portion of the locking member; a switch member, wherein the switch member has a second connection portion and a switch portion, the second connection portion of the switch member is pivotally connected to the second end of the support member and a second end of the drive member, and the switch portion is configured to drive the locking portion to rotate downwards and be pressed against the folding bedstead to lock the folding bedstead; and an elastic member, wherein a first end of the elastic member is connected to the second end of the support member, a second end of the elastic member is connected to the second connection portion of the switch member, and when the locking portion is in a locking state, the elastic member is in a stretching state.
2 . The self-locking mechanism according to claim 1 , wherein the elastic member uses a tension spring.
3 . The folding sofa, comprising: a sofa body frame, the folding bedstead and the self-locking mechanism according to claim 2 , wherein the self-locking mechanism and the folding bedstead are arranged on the sofa body frame, the folding bedstead is allowed to be folded or unfolded on the sofa body frame, when the folding bedstead is folded on the sofa body frame, the folding bedstead pushes the switch portion to rotate downwards, and the switch portion is configured to drive the locking portion to rotate downwards, wherein the locking portion is pressed against the folding bedstead to lock the folding bedstead.
4 . The self-locking mechanism according to claim 1 , further comprising: fasteners, configured to connect the support member and a sofa body frame of the folding sofa, to fix the self-locking mechanism to the folding sofa.
5 . The folding sofa, comprising: a sofa body frame, the folding bedstead and the self-locking mechanism according to claim 4 , wherein the self-locking mechanism and the folding bedstead are arranged on the sofa body frame, the folding bedstead is allowed to be folded or unfolded on the sofa body frame, when the folding bedstead is folded on the sofa body frame, the folding bedstead pushes the switch portion to rotate downwards, and the switch portion is configured to drive the locking portion to rotate downwards, wherein the locking portion is pressed against the folding bedstead to lock the folding bedstead.
6 . The self-locking mechanism according to claim 4 , wherein the fasteners use rivets.
7 . The folding sofa, comprising: a sofa body frame, the folding bedstead and the self-locking mechanism according to claim 6 , wherein the self-locking mechanism and the folding bedstead are arranged on the sofa body frame, the folding bedstead is allowed to be folded or unfolded on the sofa body frame, when the folding bedstead is folded on the sofa body frame, the folding bedstead pushes the switch portion to rotate downwards, and the switch portion is configured to drive the locking portion to rotate downwards, wherein the locking portion is pressed against the folding bedstead to lock the folding bedstead.
8 . The self-locking mechanism according to claim 1 , wherein the locking portion is a rectangular plate.
9 . The folding sofa, comprising: a sofa body frame, the folding bedstead and the self-locking mechanism according to claim 8 , wherein the self-locking mechanism and the folding bedstead are arranged on the sofa body frame, the folding bedstead is allowed to be folded or unfolded on the sofa body frame, when the folding bedstead is folded on the sofa body frame, the folding bedstead pushes the switch portion to rotate downwards, and the switch portion is configured to drive the locking portion to rotate downwards, wherein the locking portion is pressed against the folding bedstead to lock the folding bedstead.
10 . The self-locking mechanism according to claim 1 , wherein the drive member uses a connecting rod.
11 . The folding sofa, comprising: a sofa body frame, the folding bedstead and the self-locking mechanism according to claim 10 , wherein the self-locking mechanism and the folding bedstead are arranged on the sofa body frame, the folding bedstead is allowed to be folded or unfolded on the sofa body frame, when the folding bedstead is folded on the sofa body frame, the folding bedstead pushes the switch portion to rotate downwards, and the switch portion is configured to drive the locking portion to rotate downwards, wherein the locking portion is pressed against the folding bedstead to lock the folding bedstead.
12 . The self-locking mechanism according to claim 1 , wherein the switch member uses an L-shaped rod.
13 . The folding sofa, comprising: a sofa body frame, the folding bedstead and the self-locking mechanism according to claim 12 , wherein the self-locking mechanism and the folding bedstead are arranged on the sofa body frame, the folding bedstead is allowed to be folded or unfolded on the sofa body frame, when the folding bedstead is folded on the sofa body frame, the folding bedstead pushes the switch portion to rotate downwards, and the switch portion is configured to drive the locking portion to rotate downwards, wherein the locking portion is pressed against the folding bedstead to lock the folding bedstead.
14 . The folding sofa, comprising: a sofa body frame, the folding bedstead and the self-locking mechanism according to claim 1 , wherein the self-locking mechanism and the folding bedstead are arranged on the sofa body frame, the folding bedstead is allowed to be folded or unfolded on the sofa body frame, when the folding bedstead is folded on the sofa body frame, the folding bedstead pushes the switch portion to rotate downwards, and the switch portion drives the locking portion to rotate downwards, wherein the locking portion is pressed against the folding bedstead to lock the folding bedstead.
15 . A self-locking mechanism, configured to automatically lock a folding bedstead of a folding sofa, comprising: a support member, wherein the support member has a first end and a second end opposite to each other a locking member, wherein the locking member has a first connection portion and a locking portion, the first connection portion of the locking member is pivotally connected to the first end of the support member a drive member, wherein a first end of the drive member is pivotally connected to the first connection portion of the locking member a switch member, wherein the switch member has a second connection portion and a switch portion, the second connection portion of the switch member is pivotally connected to the second end of the support member and a second end of the drive member, and the switch portion is configured to drive the locking portion to rotate downwards and be pressed against the folding bedstead to lock the folding bedstead; wherein the support member has a horizontal plate and a vertical plate at the second end, a first end of the horizontal plate is perpendicularly connected to a middle section between the first end and the second end of the support member, a second end of the horizontal plate is perpendicularly connected to the vertical plate and extends downward, and the horizontal plate is installed on a sofa body frame of the folding sofa.
16 . The folding sofa, comprising: a sofa body frame, the folding bedstead and the self-locking mechanism according to claim 15 , wherein the self-locking mechanism and the folding bedstead are arranged on the sofa body frame, the folding bedstead is allowed to be folded or unfolded on the sofa body frame, when the folding bedstead is folded on the sofa body frame, the folding bedstead pushes the switch portion to rotate downwards, and the switch portion is configured to drive the locking portion to rotate downwards, wherein the locking portion is pressed against the folding bedstead to lock the folding bedstead.

Description

CROSS-REFERENCE TO THE RELATED APPLICATIONS This application is based upon and claims priority to Chinese Patent Application No. 202322418702.9, filed on Sep. 6, 2023, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD This application relates to a sofa, and particularly relates to a self-locking mechanism and a folding sofa. BACKGROUND Bed is one of the essential household items in people's home life. However, the bed usually occupies a large area and often occupy a considerable living space. To improve the reasonable use area, people improve the use mode of the bed to obtain more space to move around. Therefore, the folding sofa bed industry came into being. In the process of implementing this application, the applicant found that some folding sofa beds at present may cause customers to make misoperation due to the soft package design problems of a sofa when unfolding the folding sofa, which may lead to the damage of bedstead parts. SUMMARY An embodiment of this application provides a self-locking mechanism and a folding sofa, which solve the problem that the folding sofa is opened by misoperation. To solve the above technical problem, this application is implemented as follows: In a first aspect, a self-locking mechanism is provided, which is configured to automatically lock a folding bedstead of a folding sofa, and includes a support member, a locking member, a drive member and a switch member. The support member has a first end and a second end opposite to each other. The locking member has a first connection portion and a locking portion, and the first connection portion of the locking member is pivotally connected to the first end of the support member. One end of the drive member is pivotally connected to the first connection portion of the locking member. The switch member has a second connection portion and a switch portion, the second connection portion of the switch member is pivotally connected to the second end of the support member and the other end of the drive member, and the switch portion drives the locking portion to rotate downwards and be pressed against the folding bedstead to lock the folding bedstead. In a second aspect, a folding sofa is provided, which includes a sofa body frame, a folding bedstead and the self-locking mechanism according to any of the above first aspect. The self-locking mechanism and the folding bedstead are arranged on the sofa body frame. The folding bedstead can be folded or unfolded on the sofa body frame. When the folding bedstead is folded on the sofa body frame, the folding bedstead pushes the switch portion to rotate downwards, and the switch portion drives the locking portion to rotate downwards, so that the locking portion is pressed against the folding bedstead to lock the folding bedstead. In the embodiment of this application, the switch portion is driven to rotate downwards by a folding action of the folding bedstead, so that the locking portion is driven to rotate downwards and pressed against the folding bedstead to lock the folding bedstead, and thus the folding bedstead can be prevented from being opened by misoperation. In addition, after the folding bedstead is unfolded, the self-locking mechanism can also be used as a support to support the folding bedstead to a fixed position. Meanwhile, the self-locking mechanisms can be separately sent to customers for use, and can be used as additional options for the folding sofas according to customer needs, and the customers only need to install them in corresponding positions as required. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings described herein are used to provide a further understanding of this application, and form part of this application. Exemplary embodiments of this application and descriptions thereof are used to explain this application, and do not constitute any inappropriate limitation to this application. In the accompanying drawings: FIG. 1 is a schematic diagram of a self-locking mechanism in a locking state of an embodiment of this application; FIG. 2 is a schematic diagram of a self-locking mechanism in an opening state of an embodiment of this application; FIG. 3 is a stereogram of a folding sofa in a folded state of an embodiment of this application; FIG. 4 is a partial schematic diagram of FIG. 3 of this application; and FIG. 5 is a stereogram of a folding sofa in an unfolded state of an embodiment of this application. With the accompanying drawings, it is explained as follows: 100: self-locking mechanism; 1: support member; 11: first end; 111: pivoting portion; 12: second end; 121: horizontal plate; 122: vertical plate; 13: middle section; 2: locking member; 21: first connection portion; 22: locking portion; 23: first connection shaft; 3: drive member; 31: third connection shaft; 4: switch member; 41: second connection portion; 42: switch portion; 43: second connection shaft; 5: elastic member; 6: fastener; 200: folding sofa; 201: