Tilt ball switch

A tilt ball switch comprising:

• an insulation housing including
• a lower housing wall that has
• a lower inner wall surface surrounding an axis that extends in an up-down direction, and
• a lower outer wall surface surrounding said lower inner wall surface,
• an upper housing wall that is located over said lower housing wall and that has
• an upper inner wall surface surrounding the axis, and
• an upper outer wall surface surrounding said upper inner wall surface, and
• a top wall through which the axis extends, said top wall being located over said upper housing wall;
• a first terminal disposed at said lower inner wall surface of said lower housing wall and having
• a platform surface through which the axis extends, and
• a frustoconical surface that surrounds the axis, that extends upwardly from said platform surface, and that cooperates with a base line orthogonal to the axis to define an inclination angle therebetween, said inclination angle ranging from 10 to 85 degrees, said frustoconical surface tapering toward said platform surface;
• a second terminal including
• an inner terminal member that surrounds the axis and that is disposed at said upper inner surface of said upper housing wall,
• two outer terminal members that are spaced apart from each other and that are disposed at said upper outer surface of said upper housing wall, and
• two conductive members each of which extends from said upper inner wall surface to said upper outer wall surface, and conductively interconnects said inner terminal member and a respective one of said outer terminal members, said lower housing wall cooperating with said upper housing wall, said top wall, said first terminal and said inner terminal member of said second terminal to define a chamber space;
• and
• a conductive ball movably disposed in said chamber space and convertible between a conducting state, in which said conductive ball is in contact with said frustoconical surface of said first terminal and said inner terminal member of said second terminal so that said first terminal is conductively connected to said outer terminal members of said second terminal, and a non-conducting state, in which said conductive ball is prevented from being in contact with one of said frustoconical surface of said first terminal and said inner terminal member so that said first terminal is prevented from being conductively connected to said outer terminal members.