| CPC H01R 12/52 (2013.01) [H01R 4/48 (2013.01)] | 11 Claims | 

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               1. A connection device comprising: 
            a first substrate; 
                a second substrate located above the first substrate and disposed opposite to the first substrate; 
                a protrusion provided on an upper surface of the first substrate and protruding from the first substrate toward the second substrate; 
                a first terminal provided on the protrusion; and 
                a second terminal provided on a lower surface of the second substrate and disposed opposite to the first terminal, wherein 
                the first terminal includes a first connector and a second connector, and the first connector and the second connector are electrically joined together, 
                the second terminal includes a third connector and a fourth connector, and the third connector and the fourth connector are electrically joined together, the third connector being configured to contact the first connector, the fourth connector being configured to contact the second connector, 
                the third connector is located above the first connector, 
                the second connector is located between a first side surface of the protrusion and the fourth connector, 
                the third connector has elasticity and is configured to press against the first connector, and 
                the fourth connector has elasticity and is configured to press against the second connector. 
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