Shock sensor

A shock sensor comprising:

• a hermetically sealed case extending along a direction substantially perpendicular to a direction in which a shock is to be detected;
• a fixed reed and a movable reed sealed inside said hermetically sealed case so as to extend in a lengthwise direction of said hermetically sealed case, wherein said movable reed includes a weight member and a supporting member which elastically supports said weight member, so that when said weight member moves in said detected direction due to said shock, a contact of a tip of said weight member presses against or estranges from a contact of a tip of said fixed reed, thereby opening or closing a space between said fixed reed and said movable reed;
• and
• a coil placed around a lengthwise axis of said hermetically sealed case so as to encircle said hermetically sealed case, wherein testing is performed by making said contact of said movable reed estrange from or press against said contact of said fixed reed pursuant to a magnetic force generated to the coil by providing current to said coil.

A shock sensor comprising:

• a hermetically sealed case extending along a direction substantially perpendicular to a direction in which a shock is to be detected;
• a fixed reed and a movable reed sealed inside said hermetically sealed case so as to extend in a lengthwise direction of said hermetically sealed case, wherein said movable reed includes a weight member and a supporting member which elastically supports said weight member, so that when said weight member moves in said detected direction due to said shock, a contact of a tip of said weight member presses against a contact made of non-magnetic material of a tip of said fixed reed, thereby closing a space between said fixed reed and said movable reed;
• and
• an excitation coil placed at the outside of said hermetically sealed case adjacent to the contact of said movable reed, thereby enabling testing by providing an electric current to said excitation coil and magnetically exciting said movable reed.

A shock sensor comprising:

• a hermetically sealed case extending along a direction substantially perpendicular to a direction in which a shock is to be detected, said hermetically sealed case being installed in a reed frame and covered with resin mold so as to be formed into a package;
• and
• a fixed reed and a movable reed sealed inside said hermetically sealed case so as to extend in a lengthwise direction of said hermetically sealed case;
• wherein said movable reed includes a weight member and a supporting member which elastically supports said weight member, so that when said weight member moves in said detected direction due to said shock, a contact of a tip of said weight member presses against or estranges from a contact of a tip of said fixed reed, thereby opening or closing a space between said fixed reed and said movable reed.