Method of assembling electric equipment having connectors, and inspection device and inspection method for inspecting fitted state of connectors

An inspection device for inspecting a fitting state of a product made by fitting one of a first connector and a second connector to the other of the first connector and the second connector, comprising:

• an illumination unit to illuminate a portion including an engagement detent of the second connector which is elastically deformable and can engage with an engagement portion of the first connector, the engagement detent being capable of going over the engagement portion and being engaged with the engagement portion through fitting;
• a camera to image the portion including the engagement detent of the product;
• a measurement unit to measure a piece of data which changes with deformation of the engagement detent from a picture image obtained by the imaging;
• and
• a determination unit which compares the measured piece of data measured by the measurement unit and a piece of predetermined reference data and determines whether or not the first connector and the second connector are properly fitted.

An inspection method of inspecting a fitting state of a product made by fitting one of a first connector and a second connector to the other of the first connector and the second connector, comprising:

• imaging by a camera a portion of the product including an engagement detent of the second connector which is elastically deformable and can engage with an engagement portion of the first connector, the engagement detent being capable of going over the engagement portion and being engaged with the engagement portion through fitting;
• measuring a piece of data which changes with deformation of the engagement detent from a picture image obtained by the imaging;
• and
• comparing the measured piece of data and a piece of predetermined reference data and determining whether or not the first connector and the second connector are properly fitted.