Inspection jig and contact

A contact for use in an assembly of an inspection jig for inspection of an electronic component, the contact comprising:

• a conductive contact needle;
• a coil spring;
• and
• a conductive intermediate member,
• the contact needle having:
• a distal end adapted to contact an inspection portion of an electronic component to be inspected;
• a projection being a shaft-shaped portion continuously provided from the distal end;
• a coupling portion being a shaft-shaped portion continuously provided from the projection;
• and
• an intermediate portion being a shaft-shaped portion continuously provided from the coupling portion, wherein
• the coil spring is disposed on the outer periphery of the intermediate portion and has a first end coupled to the coupling portion, and
• the intermediate member is a cylindrical member disposed on the outer periphery of the intermediate portion to be slidably guided by the intermediate portion, the intermediate member having a first end and a second end, the first end of the intermediate member abutting on a second end of the coil spring, the second end of the intermediate member having a portion cut at an oblique angle and bent to have an endmost portion in the vicinity of a central portion.

An inspection jig for inspection of an electronic component, the inspection jig comprising:

• a plurality of contacts, each thereof being a contact comprising:
• a conductive contact needle;
• a coil spring;
• and
• a conductive intermediate member,
• the contact needle having:
• a distal end adapted to contact an inspection portion of an electronic component to be inspected;
• a projection being a shaft-shaped portion continuously provided from the distal end;
• a larger diameter portion being a shaft-shaped portion continuously provided from the projection, the larger diameter portion having a larger diameter than the projection;
• and
• an intermediate portion being a shaft-shaped portion continuously provided from the larger diameter portion, the intermediate portion having a smaller diameter than the larger diameter portion, wherein
• the coil spring is disposed on the outer periphery of the intermediate portion and has a first end abutting on a surface at the side of the intermediate portion of the larger diameter portion, and
• the intermediate member is a cylindrical member disposed on the outer periphery of the intermediate portion to be slidably guided by the intermediate portion, the intermediate member having a first end and a second end, the first end of the intermediate member abutting on a second end of the coil spring, the second end of the intermediate member having a portion cut at an oblique angle and bent to have an endmost portion in the vicinity of a central portion, and
• the inspection jig further comprising:
• a contact holder holding the plurality of contacts;
• and
• an electrode section coupled to the contact holder,
• the contact holder including:
• a plurality of guide portions, each thereof being for axially and slidably supporting the contact needle of a corresponding one of the plurality of contacts in such a manner that the distal end of the contact needle of the corresponding one of the plurality of contacts is exposed;
• a plurality of stopping portions, each thereof being configured to abut on a surface at the side of the projection of the larger diameter portion of the contact needle of a corresponding one of the plurality of contacts so as to stop the distal end from projecting further from a predetermined position;
• and
• a plurality of tubularly caved portions, each thereof containing the coil spring of the contact needle of a corresponding one of the plurality of contacts and the intermediate member of the corresponding one of the plurality of contacts,
• the electrode section including:
• an electrically insulative electrode plate coupled to the contact holder;
• and
• a plurality of shaft-shaped conductive electrodes secured to the electrode plate to pass through the electrode plate, each of the electrodes having a first endface adapted to abut on the endmost portion of the intermediate member of a corresponding one of the plurality of contacts to be electrically connected to the intermediate member and to bias the coil spring of the corresponding one of the plurality of contacts.

An inspection jig for inspection of an electronic component, the inspection jig comprising:

• a plurality of contacts, each thereof being a contact comprising:
• a conductive contact needle;
• a coil spring;
• and
• a conductive intermediate member,
• the contact needle having:
• a distal end adapted to contact an inspection portion of an electronic component to be inspected;
• a projection being a shaft-shaped portion continuously provided from the distal end;
• a coupling portion being a shaft-shaped portion continuously provided from the projection;
• and
• an intermediate portion being a shaft-shaped portion continuously provided from the coupling portion, wherein
• the coil spring is disposed on the outer periphery of the intermediate portion and has a first end coupled to the coupling portion, and
• the intermediate member is a cylindrical member disposed on the outer periphery of the intermediate portion to be slidably guided by the intermediate portion, the intermediate member having a first end and a second end, the first end of the intermediate member abutting on a second end of the coil spring, the second end of the intermediate member having a portion cut at an oblique angle and bent to have an endmost portion in the vicinity of a central portion, and
• the inspection jig further comprising:
• a contact holder holding the plurality of contacts;
• and
• an electrode section coupled to the contact holder,
• the contact holder including:
• a plurality of guide portions, each thereof being for axially and slidably supporting the contact needle of a corresponding one of the plurality of contacts in such a manner that the distal end of the contact needle of the corresponding one of the plurality of contacts is exposed;
• a plurality of stopping portions, each thereof being configured to abut on the first end of the coil spring of a corresponding one of the plurality of contacts coupled to the coupling portion of the contact needle of the corresponding one of the plurality of contacts, so as to stop the distal end of the contact needle of the corresponding one of the plurality of contacts from projecting further from a predetermined position;
• and
• a plurality of tubularly caved portions, each thereof containing the coil spring of the contact needle of a corresponding one of the plurality of contacts and the intermediate member of the corresponding one of the plurality of contacts,
• the electrode section including:
• an electrically insulative electrode plate coupled to the contact holder;
• and
• a plurality of shaft-shaped conductive electrodes secured to the electrode plate to pass through the electrode plate, each of the electrodes having a first endface adapted to abut on the endmost portion of the intermediate member of a corresponding one of the plurality of contacts to be electrically connected to the intermediate member and to bias the coil spring of the corresponding one of the plurality of contacts.