Abstract: The retainability and electric connection reliability of a plate-shaped signal transmission medium can be increased by a simple configuration while the operability of an actuator is improved. Pre-pressing protruding portions which create a clicking sensation of a turning operation of the actuator are provided in part of a region in a longitudinal direction of the actuator so that the pressing force of the pre-pressing protruding portions with respect to the plate-shaped signal transmission medium is applied to the part in the longitudinal direction of the actuator, and the pressing force of the pre-pressing protruding portions with respect to the plate-shaped signal transmission medium is prevented from being largely increased even when the actuator is enlarged in the multipolar arrangement direction.

Abstract: An actuator includes a tabular partition that partitions, for each beam located at a position that allows the beam to abut the actuator, a through-hole into which one of a pair of beams located at the other-end side and at the position that allows the beam to abut the actuator is inserted to prevent the beam from abutting the actuator, and a wider-width part including a wider-width surface which is disposed at one end of the partition corresponding to an upstream side of a flow of resin flowed to mold the partition when the actuator is molded by the resin containing a filler, and which has a wider width than a width of the one end of the partition.

Abstract: The retainability and electric connection reliability of a plate-shaped signal transmission medium can be increased by a simple configuration while the operability of an actuator is improved. Pre-pressing protruding portions which create a clicking sensation of a turning operation of the actuator are provided in part of a region in a longitudinal direction of the actuator so that the pressing force of the pre-pressing protruding portions with respect to the plate-shaped signal transmission medium is applied to the part in the longitudinal direction of the actuator, and the pressing force of the pre-pressing protruding portions with respect to the plate-shaped signal transmission medium is prevented from being largely increased even when the actuator is enlarged in the multipolar arrangement direction.

Abstract: A circuit-terminal connecting device comprising an electrical connector having an insulated housing mounted on a main circuit board and a plurality of resilient contacts arranged on the insulated housing, and a flat circuit member having a reinforced portion attached to a reinforcing board member operative to engage with the insulated housing of the electrical connector, wherein each of the resilient contacts has a board connecting portion provided to be connected to a first circuit-terminal provided on the main circuit board, a fixable portion provided to be fixed to the insulated housing, and a resilient arm portion extending from the fixable portion and provided with a contact point for coming into press-contact with a second circuit-terminal provided on the reinforced portion of the flat circuit member and a locking portion for engaging with the reinforcing board member to lock the same.

Abstract: An actuator includes a tabular partition that partitions, for each beam located at a position that allows the beam to abut the actuator, a through-hole into which one of a pair of beams located at the other-end side and at the position that allows the beam to abut the actuator is inserted to prevent the beam from abutting the actuator, and a wider-width part including a wider-width surface which is disposed at one end of the partition corresponding to an upstream side of a flow of resin flowed to mold the partition when the actuator is molded by the resin containing a filler, and which has a wider width than a width of the one end of the partition.

Abstract: An engagement amount of a latch lock part with respect to a signal transmission medium is sufficiently and constantly ensured by a simple configuration. A reference abutting surface having a stepped shape projecting toward an upper surface of the signal transmission medium compared with other part of an inner wall surface of a medium insertion path is formed at part of the inner wall surface of the medium insertion path facing the upper surface of the signal transmission medium, the upper surface of the signal transmission medium is caused to abut at least the reference abutting surface of the medium insertion path, and the position of the upper surface of the signal transmission medium is determined in the thickness direction while using the reference abutting surface as a reference.

Abstract: A circuit-terminal connecting device comprising an electrical connector having an insulated housing mounted on a main circuit board and a plurality of resilient contacts arranged on the insulated housing, and a flat circuit member having a reinforced portion attached to a reinforcing board member operative to engage with the insulated housing of the electrical connector, wherein each of the resilient contacts has a board connecting portion provided to be connected to a first circuit-terminal provided on the main circuit board, a fixable portion provided to be fixed to the insulated housing, and a resilient arm portion extending from the fixable portion and provided with a contact point for coming into press-contact with a second circuit-terminal provided on the reinforced portion of the flat circuit member and a locking portion for engaging with the reinforcing board member to lock the same.

Abstract: A simple structure capable of preventing a cam part of an actuator from coming out of position when the actuator is in an open position. The cam part 12a of the actuator 12 for rotating contacts 13 mounted inside an insulating housing 11 is provided with an engaging surface 12a2 which is a flat surface that faces cam lock protrusions 13a2 of second contact beams 13a when the actuator 12 is in the open position. Upon an external force or the like acting on the cam part 12a to come out of cam rotation recesses 13b3 when the actuator 12 is in the open position, the engaging surface 12a2 of the cam part 12a abuts on and makes locking engagement with the cam lock protrusions 13a2, so that the actuator 12 is prevented from coming out of position.

Abstract: A simple structure capable of preventing a cam part of an actuator from coming out of position when the actuator is in an open position. The cam part 12a of the actuator 12 for rotating contacts 13 mounted inside an insulating housing 11 is provided with an engaging surface 12a2 which is a flat surface that faces cam lock protrusions 13a2 of second contact beams 13a when the actuator 12 is in the open position. Upon an external force or the like acting on the cam part 12a to come out of cam rotation recesses 13b3 when the actuator 12 is in the open position, the engaging surface 12a2 of the cam part 12a abuts on and makes locking engagement with the cam lock protrusions 13a2, so that the actuator 12 is prevented from coming out of position.

Abstract: An electrical connector including a housing, conductive contacts arranged in the housing, each of which has a fixed beam fixed to the housing, a movable beam having a contacting projection and an engaging portion and a connecting strut for connecting the movable beam with the fixed beam, and an actuator rotatable for taking up first and second stations selectively and for engaging with the engaging portion of the conductive contact to cause the contacting projection of the conductive contact to come into press-contact with one of connecting terminals arranged on a circuit board having been inserted into the housing when rotated to shift from the first station to the second station, wherein a first side edge portion of the connecting strut on the side of the contacting projection of the movable beam is substantially perpendicular to the fixed beam and a second side edge portion of the connecting strut on the side of the engaging portion of the movable beam slants from the movable beam to the fixed beam so that

Abstract: An electrical connector including a housing, conductive contacts arranged in the housing, each of which has a fixed beam fixed to the housing, a movable beam having a contacting projection and an engaging portion and a connecting strut for connecting the movable beam with the fixed beam, and an actuator rotatable for taking up first and second stations selectively and for engaging with the engaging portion of the conductive contact to cause the contacting projection of the conductive contact to come into press-contact with one of connecting terminals arranged on a circuit board having been inserted into the housing when rotated to shift from the first station to the second station, wherein a first side edge portion of the connecting strut on the side of the contacting projection of the movable beam is substantially perpendicular to the fixed beam and a second side edge portion of the connecting strut on the side of the engaging portion of the movable beam slants from the movable beam to the fixed beam so that

Abstract: A coupling spring portion 15 connecting a movable beam 13 and a fixed beam 14 is formed in a shape of extending toward a connector rear end in a curved manner, so that, even if a joined portion of the coupling spring portion 15 is disposed at an approximately central portion of the fixed beam 14, an insertion space for a connection object is secured sufficiently. Simultaneously, a distance X from a swinging center W of the movable beam 13 to a front side contact point 13a of the movable beam 13 and a distance Y there from to an actuator operating point Q are set to be approximately equal to each other, so that a contact pressure of the movable beam 13 to the connection object is kept approximately constant by causing an operation amount of the actuator 16 to the movable beam 13 and a working amount of the movable beam 13 at the front side contact point 13a to approximately coincide with each other.

Abstract: An electrical connector including a housing, first and second contacts arranged in the housing, each of which has a fixed part engaging with a board-shaped portion of the housing and an operating part movable to the fixed part, and an actuator movable to the housing for taking up first and second stations selectively, wherein each of the first and second contacts is shaped to have substantially the same space between the fixed and operating parts thereof or between the operating part thereof and the board-shaped portion of the housing when the actuator is postured to take the first station and a circuit board is not inserted into the housing. The actuator includes a plurality of cams each engaging with one of the first and second contacts, wherein each of the cams corresponding to the first contacts and each of the cams corresponding to the second contacts are different in shape from each other.

Abstract: An electrical connector comprising a housing, first and second contacts arranged in the housing, each of which has a fixed part engaging with a board-shaped portion of the housing and an operating part movable to the fixed part, and an actuator movable to the housing for taking up first and second stations selectively, wherein each of the first and second contacts is shaped to have substantially the same space between the fixed and operating parts thereof or between the operating part thereof and the board-shaped portion of the housing when the actuator is postured to take the first station and a circuit board is not inserted into the housing, and the operating part of each of the first contacts exerts on the circuit board inserted into the housing a first temporary holding force different from a second temporary holding force exerted on the circuit board inserted into the housing by the operating part of each of the second contacts when the actuator is postured to take the first station and the circuit board

Abstract: An electrical connector comprising a housing made of insulator, conductive contacts arranged in the housing and an actuator attached rotatably to the housing, wherein the conductive contacts are divided into at least first and second groups, and the actuator brings each of the conductive contacts belonging to the first group into press-contact with one of connecting terminals on a circuit board partially inserted into the housing in a first predetermined manner and each of the conductive contacts belonging to the second group into press-contact with another of the connecting terminals in a second predetermined manner different from the first predetermined manner so that a time difference is brought about between a first time point at which the conductive contacts belonging to the first group exert the maximum retroactive force to the actuator and a second time point at which the conductive contacts belonging to the second group exert the maximum retroactive force to the actuator.

Abstract: A coupling spring portion 15 connecting a movable beam 13 and a fixed beam 14 is formed in a shape of extending toward a connector rear end in a curved manner, so that, even if a joined portion of the coupling spring portion 15 is disposed at an approximately central portion of the fixed beam 14, an insertion space for a connection object is secured sufficiently. Simultaneously, a distance X from a swinging center W of the movable beam 13 to a front side contact point 13a of the movable beam 13 and a distance Y therefrom to an actuator operating point Q are set to be approximately equal to each other, so that a contact pressure of the movable beam 13 to the connection object is kept approximately constant by causing an operation amount of the actuator 16 to the movable beam 13 and a working amount of the movable beam 13 at the front side contact point 13a to approximately coincide with each other.

Abstract: An electrical connector comprising a housing made of insulator, conductive contacts arranged in the housing and an actuator attached rotatably to the housing, wherein the conductive contacts are divided into at least first and second groups, and the actuator brings each of the conductive contacts belonging to the first group into press-contact with one of connecting terminals on a circuit board partially inserted into the housing in a first predetermined manner and each of the conductive contacts belonging to the second group into press-contact with another of the connecting terminals in a second predetermined manner different from the first predetermined manner so that a time difference is brought about between a first time point at which the conductive contacts belonging to the first group exert the maximum retroactive force to the actuator and a second time point at which the conductive contacts belonging to the second group exert the maximum retroactive force to the actuator.