Anti-rotation misuse device and seat

Abstract

A rotation prevention misuse device is connected between a first part and a second part which are relatively rotatable. The rotation prevention misuse device comprises a blocking part fixed on the first part, a mounting part fixed on the second part, the mounting part having a bottom wall and first and second side walls extending from the bottom wall and opposite to each other, the bottom wall and the side walls forming a receiving space, a blocking member pivotably arranged between the side walls through a pivot shaft and at least partially received in the receiving space, the blocking member being pivotable between a locking position in which the blocking member prevents the first part from rotating and a releasing position in which the blocking member allows the first part to rotate, and a pushing assembly arranged on the bottom wall of the mounting part and at least partially received in the receiving space, the pushing assembly being slidable on the bottom wall under an external force to drive the blocking member to pivot from the locking position to the releasing position.

Claims

1. A device for preventing rotational misuse, connected between a first component and a second component that rotate relative to each other, the device comprising: The blocking part is fixed to the first component; The mounting component is fixed to the second component. The mounting component has a bottom wall and a first side wall and a second side wall extending from the bottom wall and opposing each other. The bottom wall, the first side wall and the second side wall are used to form an accommodating space. A blocking member is pivotally disposed between the first sidewall and the second sidewall via a pivot axis and is at least partially received in the receiving space to pivot between a locked position and a released position. In the locked position, the blocking member is engaged with the blocking portion to prevent the first component from rotating relative to the second component in a rotational direction. In the released position, the blocking member is disengaged from the blocking portion, allowing the first component to rotate relative to the second component in the rotational direction. A pushing component is disposed on the bottom wall of the mounting member and at least partially received in the receiving space. The pushing component is slidable on the bottom wall under the action of an external force to drive the blocking member to pivot from the locked position to the released position. The pushing component includes: A drive block is slidably disposed in the accommodating space and located on the bottom wall of the mounting component; A push button is located outside the receiving space of the mounting component; and A connector securely connects the drive block and the push button together.

2. The anti-rotation misuse device according to claim 1 further includes: A torsion spring is sleeved on the pivot shaft, with one end fixed to the blocking member and the other end fixed to the mounting member, for biasing the blocking member toward the locking position.

3. The anti-rotation misuse device according to claim 1, wherein, At least one of the first and second sidewalls of the mounting component has an elongated slot arranged along the sliding direction of the drive block. The connector passes through the elongated slot to securely connect the drive block and the push button together, and can slide along the elongated slot.

4. The anti-rotation misuse device according to claim 3, wherein, The drive block has a first end and a second end along its sliding direction, and has a protrusion between the first end and the second end; In the height direction perpendicular to the sliding direction, the first end has a gradually increasing height that slopes towards the protrusion, and the second end has a substantially uniform height below the protrusion; and The connector is shaped like a folded rod, with one end inserted into the protrusion along a direction perpendicular to the sliding direction and the height direction, and the other end fixed to the push button.

5. The anti-rotation misuse device according to claim 4, wherein, The blocking element includes: The top surface is opposite to the bottom wall of the mounting component and approximately parallel to the bottom wall; The bottom surface faces the bottom wall of the mounting member and is approximately parallel to the bottom wall. An outwardly protruding foot is provided at one end of the bottom surface of the blocking member; and The two sides are located between the top and bottom surfaces; In the release position, the drive block is located at one end of the elongated slot, the foot is located at the second end of the drive block, and the top surface of the drive block is disposed opposite to the blocking part. In the locked position, the drive block is located at the other end of the elongated slot, the foot is located at the first end of the drive block, and one of the two sides of the blocking member is engaged with the blocking portion.

6. A device for preventing rotational misuse, connected between a first component and a second component that are rotating relative to each other, the device comprising: The blocking part is fixed to the first component; The mounting component is fixed to the second component. The mounting component has a bottom wall and a first side wall and a second side wall extending from the bottom wall and opposing each other. The bottom wall, the first side wall and the second side wall are used to form an accommodating space. A blocking member is pivotally disposed between the first sidewall and the second sidewall via a pivot axis and is at least partially received in the receiving space to pivot between a locked position and a released position. In the locked position, the blocking member is engaged with the blocking portion to prevent the first component from rotating relative to the second component in a rotational direction. In the released position, the blocking member is disengaged from the blocking portion, allowing the first component to rotate relative to the second component in the rotational direction. A pushing component is disposed on the bottom wall of the mounting member and at least partially received in the receiving space. The pushing component is slidable on the bottom wall under the action of an external force to drive the blocking member to pivot from the locked position to the released position. The blocking element includes: The top surface is opposite to the bottom wall of the mounting component and approximately parallel to the bottom wall; and The bottom surface faces the bottom wall of the mounting component and is approximately parallel to the bottom wall; The blocking member has an outwardly protruding foot on its bottom surface, and the pushing component drives the blocking member to pivot from the locked position to the released position by pushing the foot.

7. A seat, comprising: A base, comprising an annular track defining a sliding direction; A pusher, connected to the base and slidably inserted into the annular track; The seat body is fixedly connected to the push member, and can rotate relative to the base together with the push member; as well as The anti-rotation misuse device according to any one of claims 1-6 is installed between the base and the pusher, wherein the first component is the pusher and the second component is the base.

8. The seat according to claim 7, wherein, The jacking member includes a jacking member body that can slide on the annular track, and the blocking part is disposed on the jacking member body and extends outward in the radial direction toward the annular track.

9. The seat according to claim 7, wherein, Two anti-rotation misuse devices are provided, located on both sides of the base respectively. A toggle link is provided between the two anti-rotation misuse devices, so that when the pushing component of one of the two anti-rotation misuse devices is operated, it will drive the pushing component of the other two anti-rotation misuse devices to operate synchronously.

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