Title:
VEHICLE ALARM DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/176195
Kind Code:
A1
Abstract:
This vehicle alarm device (1) has: a coil (20) in a housing (11) having an opening (112a), the coil (20) generating magnetic force by energization; a fixed iron core (22); and a movable iron core (4) that is displaced in the axial direction toward the fixed iron core (22) by the magnetic attractive force generated by energization of the coil (20). The vehicle alarm device (1) has a vibration plate (3) that is fixed to the housing (11) and the movable iron core so as to cover the opening (112a), the vibration plate (3) vibrating along with the displacement in the axial direction of the movable iron core (4) and causing the air to vibrate. Ventilation holes (30) that are through holes are provided in the vibration plate (3). A filter (6) that covers the ventilation holes (30) from the outside is provided to the vibration plate (3). The formation of a water film in the ventilation holes communicating between the inside and the outside of the housing can be suppressed.
Inventors:
DOI SOUSHI (JP)
MAEBASHI YUUYA (JP)
MAEBASHI YUUYA (JP)
Application Number:
PCT/JP2018/045338
Publication Date:
September 19, 2019
Filing Date:
December 10, 2018
Export Citation:
Assignee:
HAMANAKODENSO CO LTD (JP)
International Classes:
G10K9/15; G10K9/12
Foreign References:
| JPH03110953U | 1991-11-13 |
Attorney, Agent or Firm:
JIN Shunji (JP)
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