Connector assembly for a chair backrest and a chair seat portion, and chair having the same

Abstract

This invention relates to a connection assembly for a chair back and a seat, and a chair having the same. The connection assembly includes a first connector, a second connector, a movable fastener, an elastic element, and a shoulder. The two connectors are interlocked relative to each other in the assembly direction. The movable fastener is pivotable about a pivot and biased by the elastic element to hold the shoulder in place after interlocking. Preferably, the connection assembly further includes a push-twist and a crossbar to move the movable fastener to the holding position before it fully springs back, and to help limit displacement in the disassembly direction.

Claims

1. A connecting assembly for releasably connecting a chair back and a chair seat, comprising: A first connector is configured to be attached to one of the chair back and the chair seat; A second connector configured to attach to the other of the chair back and the chair seat, the first and second connectors being configured to connect to each other by relative movement along an assembly direction; a movable fastener movably mounted on one of the first and second connectors and movable about a pivot between a released position and a fastened position, the movable fastener including a fastening portion for fastening the shoulder; an elastic member configured to bias the movable fastener toward the fastened position; a shoulder formed on the other of the first and second connectors; a push-button operable from outside the connecting assembly and movable by manual pressing; and a crossbar mounted on one of the first and second connectors in a laterally movable manner. During the relative movement of the first connector and the second connector along the assembly direction, the other of the first connector and the second connector contacts a guide surface of the movable fastener, causing the movable fastener to move away from the fastening position; after the first connector and the second connector reach an assembly position, the elastic member causes the movable fastener to move toward the fastening position, causing the movable fastener to fasten the shoulder, thereby preventing the first connector and the second connector from separating in a direction opposite to the assembly direction; the push-twist and the crossbar include mutually cooperating inclined surfaces, causing the movement of the push-twist along a pressing direction to cause lateral movement of the crossbar; and the crossbar directly contacts the bottom of the fastening portion, causing the lateral movement of the crossbar to force the movable fastener to move toward the fastening position before the movable fastener has fully moved to the fastening position.

2. The connection component as described in claim 1, wherein, The movable fastener includes a guide surface and a pushing part. The guide surface can be operated from the outside of either the first connector or the second connector, and manually applying force to the guide surface will cause the movable fastener to move away from the shoulder. When the fastening relationship between the movable fastener and the shoulder is released, manually pushing the pushing part in a disassembly direction will cause the first connector and the second connector to separate relative to each other.

3. The connection component as described in claim 1, wherein, The elastic element includes a compression spring disposed in a recess and configured to bias the movable fastener toward the fastening position.

4. The connection component as described in claim 1, wherein, The guide surface is an inclined surface.

5. The connection component as described in claim 1, wherein, The push knob is configured to hold the crossbar in a restricted state when moved to an actuated position to prevent the crossbar from moving in a direction that would allow the movable fastener to move toward the release position.

6. The connection component as described in claim 5, wherein, One of the first connector and the second connector includes an opening configured to allow the push knob to be manually moved in a release direction to release the crossbar and allow the first connector to separate from the second connector.

7. A chair, comprising: A chair back; A seat portion; and a connecting component as described in any one of claims 1 to 6, which connects the backrest to the seat portion.

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