Electronic circuit holder

An electronic circuit holder comprising:

• a fixing plate having:
• a fixing portion for fixing an electronic circuit on a surface of the fixing plate;
• and
• lock protrusions on opposed sides of the fixing plate;
• a pair of side wall plates between which the fixing plate is configured to be interposed, a first of the pair of side wall plates having first lock penetrating holes, and a second of the pair of side wall plates having second lock penetrating holes, the lock protrusions of the fixing plate being configured to be engaged with the first and second lock penetrating holes to hold the fixing plate at a predetermined height;
• and
• a seat having a plurality of seat-side lock penetrating holes arranged at a predetermined interval, and having plate-shaped protrusions,
• wherein:
• the first of the pair of side wall plates has, on a side thereof, a first wall-side lock protrusion, and the second of the pair of side wall plates has, on a side thereof, a second wall-side lock protrusion, the first and second wall-side lock protrusions being defined as a pair of wall-side lock protrusions configured to be engaged with a pair of seat-side lock penetrating holes of the plurality of seat-side lock penetrating holes;
• the seat allows a user to select the pair of seat-side lock penetrating holes from among the plurality of seat-side lock penetrating holes to engage the pair of wall-side lock protrusions with the pair of seat-side lock penetrating holes, thereby changing a position of the fixing plate on the seat in accordance with a position of another part to be installed on the seat;
• each of the first wall-side lock protrusion and the second wall-side lock protrusion has a shape allowing engagement with each of the plate-shaped protrusions;
• and
• when the first wall-side lock protrusion and the second wall-side lock protrusion are engaged with the plate-shaped protrusions instead of the pair of seat-side lock penetrating holes, the surface of the fixing plate is vertical to a surface of the seat.

An electronic circuit holder comprising:

• a fixing plate having:
• a fixing portion for fixing an electronic circuit on a surface of the fixing plate;
• and
• lock protrusions on opposed sides of the fixing plate;
• a pair of side wall plates between which the fixing plate is configured to be interposed, a first of the pair of side wall plates having first lock penetrating holes, and a second of the pair of side wall plates having second lock penetrating holes, the lock protrusions of the fixing plate being configured to be engaged with the first and second lock penetrating holes to hold the fixing plate at a predetermined height;
• and
• a seat having a plurality of seat-side lock penetrating holes arranged at a predetermined interval,
• wherein:
• the first of the pair of side wall plates has, on a side thereof, a first wall-side lock protrusion, and the second of the pair of side wall plates has, on a side thereof, a second wall-side lock protrusion, the first and second wall-side lock protrusions being defined as a pair of wall-side lock protrusions configured to be engaged with a pair of seat-side lock penetrating holes of the plurality of seat-side lock penetrating holes;
• the seat allows a user to select the pair of seat-side lock penetrating holes from among the plurality of seat-side lock penetrating holes to engage the pair of wall-side lock protrusions with the pair of seat-side lock penetrating holes, thereby changing a position of the fixing plate on the seat in accordance with a position of another part to be installed on the seat;
• and
• each of the lock protrusions of the fixing plate has a shape allowing engagement with each of the plurality of seat-side lock penetrating holes of the seat.