Lock device for opening and closing body

A lock device for an opening and closing body that is attached to an opening portion of a fixed body so as to be operable and closable, the lock device comprising:

• lock portions provided on one of the opening portion of the fixed body and the opening and closing body;
• a pair of rods which are provided on the other of the fixed body and the opening and closing body and are to engage with or disengage from the respective lock portions;
• a base member installed on the fixed body or the opening and closing body;
• a rotary member which is attached to the base member rotatably;
• and
• a manipulation member to manipulate the rods to engage or disengage the rods with or from the respective lock portions,
• wherein the base member has a bottom portion which faces an installation surface of the fixed body or the opening and closing body and has a bottom surface and a pair of erection walls which are erected from the side of the bottom surface,
• wherein the rotary member has a rod link portion which is coupled with the rods and transmit rotational power of the rotary member to the rods and a guide wall which is located inside the rod link portion in the rotary member and guides the rods as they slide, and the guide wall comprises arc walls or a cylindrical wall having arc-shaped surfaces or a circular surface whose axis coincides with the rotation center of the rotary member,
• wherein when viewed from a direction perpendicular to the bottom surface of the base member, each erection wall of the base member and the guide wall of the rotary member are opposed to each other with a gap capable of receiving the associated rod formed in between,
• wherein coming-off-preventive structures each of which prevents the associated rod from coming off in the direction perpendicular to the bottom surface of the base member when the rod is inserted in the gap and coupled with the rod link portion is provided between the rod and the associated erection wall of the base member,
• wherein each coming-off-preventive structure comprises a bendable, elastic nail which is provided in the erection wall and an engagement target portion which is provided in the rod and engages with the elastic nail, and
• wherein the erection wall is formed with a pair of slits, and the elastic nail is formed in the erection wall in a bendable manner through the pair of slits.

A lock device for an opening and closing body that is attached to an opening portion of a fixed body so as to be openable and closable, the lock device comprising:

• lock portions provided on one of the opening portion of the fixed body and the opening and closing body;
• a pair of rods which are provided on the other of the fixed body and the opening and closing body and are to engage with or disengage from the respective lock portions;
• a base member installed on the fixed body or the opening and closing body;
• a rotary member which is attached to the base member rotatably;
• and
• a manipulation member to manipulate the rods to engage or disengage the rods with or from the respective lock portions,
• wherein the base member has a bottom portion which faces an installation surface of the fixed body or the opening and closing body and has a bottom surface and a pair of erection walls which are erected from the side of the bottom surface,
• wherein the rotary member has a rod link portion which is coupled with the rods and transmit rotational power of the rotary member to the rods and a guide wall which is located inside the rod link portion in the rotary member and guides the rods as they slide, and the guide wall comprises arc walls or a cylindrical wall having arc-shaped surfaces or a circular surface whose axis coincides with the rotation center of the rotary member,
• wherein when viewed from a direction perpendicular to the bottom surface of the base member, each erection wall of the base member and the guide wall of the rotary member are opposed to each other with a gap capable of receiving the associated rod formed in between,
• wherein coming-off-preventive structures each of which prevents the associated rod from coming off in the direction perpendicular to the bottom surface of the base member when the rod is inserted in the gap and coupled with the rod link portion is provided between the rod and the associated erection wall of the base member,
• wherein each coming-off-preventive structure comprises a bendable, elastic nail which is provided in the erection wall and an engagement target portion which is provided in the rod and engages with the elastic nail, and the elastic nail is thrilled into a shape having a base portion disposed at a side of a tip portion of the erection wall in an erection direction thereof and a free end extending from the base portion toward the bottom surface of the base member,
• wherein a side surface, opposite to a side surface located on the side of the guide wall of the base member, of the rod is formed with the engagement target portion,
• wherein the engagement target portion is a projection strip which extends in the axial direction of the rod and is formed in the side surface, opposite to the side surface located on the side of the guide wall of the base member, of the rod at a position close to the bottom surface of the base member, and
• wherein the elastic nail has an engagement surface which engages with an upper surface of the projection strip to prevent the rod from corning-off, and the elastic nail engages with the engagement target portion in such a state that a tip of the free end of the elastic nail urges a side surface of the projection strip so that the rod comes into contact with the guide wall.