Patent ID: 8690587

Claim:
A connection terminal comprising: a first contact member that has a conducive property and that has an approximately plate shape, the first contact member including: a first tip portion, a tip of which is sharply pointed; a first base end portion, a width of which is less than a width of the first tip portion and which extends from a base end of the first tip portion; and a protrusion protruding in a direction perpendicular to one plane of the base end portion; a second contact member that has a conducive property and that has an approximately plate shape, the second contact member including: a second tip portion, a tip of which is sharply pointed; and a second base end portion, a width of which is less than a width of the second tip portion and which extends from a base end of the second tip portion, wherein the second contact member slides against the protrusion in a direction in which the second base end portion extends; and a coil spring that surrounds the first base end portion and the second base end portion and biases the first contact member and the second contact member toward the first tip portion and the second tip portion, respectively, wherein one of the protrusion and the second base end portion surrounds at least a part of an outer circumference of the other one of the protrusion and the second base end portion.