脱扣杆与电气装置
By setting grooves and reinforcing ribs on the trip rod, and combining the protrusion with the actuation mechanism, the problems of rigidity and inertia of the trip rod are solved, realizing a lightweight, high-rigidity, and low-inertia trip rod design, thus improving the reliability of the circuit breaker.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SCHNEIDER ELECTRIC IND SAS
- Filing Date
- 2025-06-09
- Publication Date
- 2026-07-17
AI Technical Summary
Existing trip lever materials are rigid but not impact resistant, and have a large moment of inertia during rotation, which puts a heavy burden on the actuation mechanism and makes it easy to fail to actuate.
Design a trip lever, including a lever body, first and second protrusions, reinforcing ribs and a reset surface. By setting grooves and reinforcing ribs on the lever body, the weight is reduced and the strength is increased. The protrusions cooperate with the actuation mechanism to realize the tripping operation, and the reset surface prevents malfunction.
It achieves a lightweight, high-rigidity, and low-inertia trip lever, which can effectively perform the tripping function, reduce the burden on the actuation mechanism, prevent malfunctions, and improve the reliability of the circuit breaker.
Smart Images
Figure CN224519844U_ABST
Abstract
Claims
1. A trip lever (1) characterized in that, include The rod body (10) extends in the axial direction and is configured to rotate about a rotation axis in the axial direction. The rod body (10) is provided with a groove that is recessed from the outer surface transverse to the axial direction. The first protrusion (11) extends outward in the radial direction from the rod body (10). The second protrusion (12) extends outward from the rod body (10) in the radial direction. The second protrusion (12) and the first protrusion (11) are misaligned in the axial direction and their projections in a plane perpendicular to the axial direction form a non-zero angle. A reinforcing rib is provided on the rod body (10) to enhance the strength of the release rod (1).
2. The trip lever (1) according to claim 1, characterized in that, The trip lever (1) includes a plurality of first protrusions (11).
3. The trip lever (1) according to claim 2, characterized in that, The reinforcing rib includes a first axial rib (21) extending in the axial direction, and the first axial rib (21) is connected to the plurality of first protrusions (11).
4. The trip lever (1) according to claim 3, characterized in that, The reinforcing rib includes a second axial rib (22) extending in the axial direction, and the second axial rib (22) is connected to the second protrusion (12).
5. The trip lever (1) according to claim 4, characterized in that, The reinforcing ribs include in-groove reinforcing ribs disposed in the grooves.
6. The trip lever (1) according to claim 5, characterized in that, The reinforcing ribs in the groove include inclined ribs that form an acute angle with the axial direction.
7. The trip lever (1) according to claim 6, characterized in that, The rod body (10) is provided with a plurality of grooves, which are distributed along the axial direction. The first groove (41) is disposed at the first protrusion (11) in the axial direction and is opposite to the first protrusion (11) in the radial direction. The second groove (42) is disposed between the first protrusion (11) and the second protrusion (12) in the axial direction.
8. The trip lever (1) according to claim 7, characterized in that, The release lever (1) is provided with two first protrusions (11). The second protrusion (12) is provided in the axial direction between the two first protrusions (11) and closer to one of the first protrusions (11). A plurality of interconnected inclined ribs (321) are provided in the second groove (42) between the second protrusion (12) and the other first protrusion (11). The two adjacent inclined ribs (321) form a non-zero included angle. The second groove (42) is also provided with a vertical rib (322) perpendicular to the axial direction at the junction of the two adjacent inclined ribs (321).
9. The trip lever (1) according to any one of claims 1-8, characterized in that, The trip lever (1) further includes a reset surface (13), which extends axially from the second protrusion (12) and is transverse to the direction in which the second protrusion (12) extends from the lever body (10).
10. An electrical device (5) characterized by include The moving contact and the stationary contact can come into contact with each other and separate. The tripping mechanism (51) has a tripping operation that causes the moving contact and the stationary contact to separate. According to any one of claims 1-9, the trip lever (1) is configured to rotate about the rotation axis between a reset position and a trip position, and when the trip lever (1) moves to the trip position, it actuates the tripping mechanism (51) to perform a tripping operation. An actuation mechanism (52) includes an actuator (521), the actuation mechanism (52) being configured to cause the actuator to move from a first position to a second position when the current flowing through the electrical device (5) exceeds a threshold. The actuator (521) cooperates with the first protrusion (11) such that the movement of the actuator from the first position to the second position drives the trip lever (1) from the reset position to the trip position via the first protrusion (11).
11. The electrical device (5) according to claim 10, characterized in that, An offsetting element (53) is provided on the trip lever (1) to offset the trip lever (1) toward the reset position.
12. The electrical device according to claim 10, characterized in that, The trip lever (1) further includes a reset surface (13), which extends axially from the second protrusion (12) and is transverse to the direction in which the second protrusion (12) extends from the lever body (10). The electrical device further includes a handle (54) configured to switch between a closed position and an open position to drive the moving contact and the stationary contact to contact and separate. After the actuator of the actuation mechanism moves from the first position to the second position, it drives the trip lever (1) from the reset position to the trip position via the first protrusion (11). Then, the handle can abut against the reset surface (13) during the movement from the closed position to the open position, so as to drive the trip lever (1) from the trip position back to the reset position, and then drive the actuator from the second position back to the first position via the first protrusion (11).