Coupler

A coupler including:

• a female coupler into which a male coupler can be inserted;
• and
• a guide housed in said female coupler in a positioned condition, and detachably supporting said male coupler,
• wherein said guide has elasticity;
• and
• said guide includes:
• a base wall formed with an opening through which said male coupler can pass;
• a first wall extending from one end of said base wall in a direction in which said male coupler is inserted into said female coupler, and being bent in the opposite direction;
• and
• a second wall extending from the other end of said base wall in a direction in which said male coupler is inserted into said female coupler, and being bent in the opposite direction,
• said first wall and said second wall having said elasticity such that they move away from each other,
• said first wall having a first auxiliary wall being bent forwardly of said base wall towards said second wall,
• said second wall having a second auxiliary wall being bent forwardly of said base wall towards said first wall,
• said first auxiliary wall and said second auxiliary wall having cut-outs at distal ends thereof, said cut-outs defining an opening through which said male coupler can pass when said first auxiliary wall and said second auxiliary wall make abutment at distal ends thereof with each other.

A guide housed in a positioned condition in a female coupler composing a coupler together with a male coupler, said female coupler being able to house said male coupler therein, said guide detachably supporting said male coupler,

• said guide including:
• a base wall;
• and
• a pair of walls extending in a common direction from said base wall such that they face each other,
• at least one of said walls having elasticity,
• said at least one of said walls being able to move towards and away from the other of said walls,
• said female coupler, while said male coupler is being inserted in said female coupler, being engaged with said male coupler by virtue of said elasticity to thereby lock said male coupler, and disengaging from said male coupler when said at least one of said walls moves through said female coupler towards or away from the other of said walls.

A guide to be housed in a coupler including a male coupler, and a female coupler into which said male coupler can be inserted, said female coupler being able to keep said male coupler locked therein, and further being able to unlock said male coupler in response to a predetermined action carried out by a user to said female coupler to thereby allow said male coupler to be taken out of said female coupler, said guide being housed in said female coupler,

• wherein said guide has elasticity;
• and
• said guide includes:
• a base wall formed with an opening through which said male coupler can pass;
• a first wall extending from one end of said base wall in a direction in which said male coupler is inserted into said female coupler, and being bent in the opposite direction;
• and
• a second wall extending from the other end of said base wall in a direction in which said male coupler is inserted into said female coupler, and being bent in the opposite direction,
• said first wall and said second wall having said elasticity such that they move away from each other,
• said first wall having a first auxiliary wall being bent forwardly of said base wall towards said second wall,
• said second wall having a second auxiliary wall being bent forwardly of said base wall towards said first wall,
• said first auxiliary wall and said second auxiliary wall being formed at distal ends thereof with cut-outs, said cut-outs defining an opening through which said male coupler can pass when said first auxiliary wall and said second auxiliary wall make abutment at distal ends thereof with each other.