Electrical connector

1. An electrical connector comprising;

a housing provided to be mounted on a solid circuit board with a first end surface facing the solid circuit board, a second end surface opposite to the first end surface to be open to a space on the solid circuit board and an opening through which a flat circuit device is inserted in the housing,

a plurality of conductive contacts arranged on the housing to be electrically connected respectively with circuit terminals provided on the solid circuit board and positioned to correspond respectively to connecting terminals provided on the flat circuit device inserted in the housing through the opening provided thereon, and

reinforcing mount members provided respectively on end portions of the housing in a direction along which the conductive contacts are arranged to be used for mounting the housing on the solid circuit board,

wherein a holding member is formed in the reinforcing mount member to extend into the housing for engaging with the flat circuit device inserted in the housing to hold the same, a releasing member is formed in the housing to be movable with a first end portion thereof operative to project out of the housing on the side of the second end surface of the housing and a second end portion thereof operative to engage with the holding member, and the releasing member is moved toward the first end surface of the housing so that the second end portion of the releasing member causes the holding member to be released from engagement with the flat circuit device inserted in the housing when the first end portion of the releasing member is pushed toward the inside of the housing under a condition wherein the holding member is put in the engagement with the flat circuit device inserted in the housing.

2. An electrical connector according to claim 1 , wherein the holding member comprises an engaging portion for engaging with an engaging edged portion provided on the flat circuit device inserted in the housing through the opening provided thereon to hold the flat circuit device and a resilient arm portion for supporting the engaging portion to be shiftable in position in the housing, and the second end portion of the releasing member is operative to engage with the resilient arm portion of the holding member.

3. An electrical connector according to claim 2 , wherein the second end portion of the releasing member is operative to deform resiliently the resilient arm portion of the holding member to shift the engaging portion of the holding member in its position so that the engaging portion of the holding member is released from engagement with the engaging edged portion provided on the flat circuit device inserted in the housing when the first end portion of the releasing member is pushed toward the inside of the housing under a condition wherein the engaging portion of the holding member is put in the engagement with the engaging edged portion provided on the flat circuit device inserted in the housing.

4. An electrical connector according to claim 2 , wherein the resilient arm portion of the holding member is operative to hit with resilient force against a portion of the housing when the engaging portion of the holding member comes to the engagement with the engaging edged portion provided on the flat circuit device inserted in the housing.

5. An electrical connector according to claim 2 , wherein the engaging portion of the holding member has an upper end thereof on which a slanted end plane is formed to ascend gradually in a direction along which the flat circuit device is inserted into the housing through the opening provided thereon and the upper end of the engaging portion of the holding member is operative to engage with the engaging edged portion provided on the flat circuit device inserted in the housing.

6. An electrical connector according to claim 2 , wherein an end portion of the engaging portion of the holding member on the side of the opening provided on the housing is positioned in close vicinity to a portion of the housing in which the opening is formed.

7. An electrical connector according to claim 1 , wherein a first stopping portion is provided on the housing for engaging with a portion of the releasing member to limit a movement of the same so as to cause the releasing member to come to a standstill when the first end portion of the releasing member is excessively pushed toward the inside of the housing and thereby the releasing member is excessively moved toward the first end surface of the housing.

8. An electrical connector according to claim 1 , wherein a second stopping portion is provided on the housing for engaging with a portion of the releasing member to limit a movement of the same so as to cause the releasing member to come to a standstill when the first end portion of the releasing member is excessively pulled out of the housing and thereby the releasing member is excessively moved toward the outside of the housing.

9. An electrical connector according to claim 1 , wherein a third stopping portion is provided on the housing for engaging with a portion of the releasing member to limit a movement of the same so as to cause the releasing member to come to a standstill when the first end portion of the releasing member is excessively pushed in a direction along which the conductive contacts are arranged and thereby the releasing member is excessively moved in the direction along which the conductive contacts are arranged.