Tip-over detection sensor
By designing a overturn detection sensor with a curved surface, built-in magnet and magnetic fluid, the problem of inability to detect tilt or overturn in all directions in the prior art is solved, and a small and efficient overturn detection effect is achieved.
CN114175202BActive Publication Date: 2025-03-21NIPPON ALEPH CORP
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Patent Information
- Application Number
- CN202080053208.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2019-07-27
- Filing Date
- 2020-07-17
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2040-07-17
AI Technical Summary
Technical Problem
The existing overturn detection sensor cannot detect tilt or overturn in the all-round tilt direction, and there are blind spots.
Method used
A small overturn detection sensor is designed, whose housing has a concave curved surface and is liquid-tightly closed, with a built-in magnet and magnetic fluid, and a reed switch is arranged near the bottom center or center of the housing, and the magnet slides along the curved surface to detect tilt.
Benefits of technology
It is realized that the tilt or overturning is detected in the all-round tilt direction. The overall height of the sensor is low and is small in size, and can be stably maintained on or off to resist the influence of external magnetic fields or vibrations.
✦ Generated by Eureka AI based on patent content.
Abstract
A small-sized tip-over detection sensor (10) for detecting tipping and tipping in all-directional tilting directions comprises: a hollow non-magnetic shell (12) having a concave curved surface (12a) open upward and a cover member (12b) sealing the upper end thereof in a liquid-tight manner; a cubic magnet magnetized in the longitudinal direction or a disk-shaped flat magnet magnetized in the radial direction (13), which is accommodated in a hollow portion (12c) defined by the curved surface of the shell and the cover member; a magnetic fluid (14), which is magnetically attracted to the magnetic pole portions (13a, 13b) at both radial ends of the magnet in the hollow portion; and a reed switch (15) which is disposed in the shell. A pair of reeds (15a, 15b) are integrally arranged near the central axis of the shell below; when upright, the central axis extends in the vertical direction, and the magnet is near the central axis of the curved surface of the shell due to gravity, and the magnetization direction extends in the length direction of the reed switch. Each magnetic pole portion of the magnet magnetizes the corresponding reed of the reed switch located directly below it, one reed (15a) is magnetized to the N pole and the other is magnetized to the S pole to be turned on, and when tilted from the upright state, the magnet slides along the curved surface of the shell and deviates from the central axis, and only one magnetic pole portion of the magnet is located near the central axis. The magnetic pole portion magnetizes each reed to the same pole to disconnect the reed switch.
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