Trigger type liquid ejector

A trigger type liquid ejector comprising:

• an ejector body which is mounted on a container body in which a liquid is accommodated;
• and
• a nozzle which is disposed in front of the ejector body, and in which an ejection hole configured to eject the liquid is formed,
• wherein the ejector body includes:
• a vertical supply pipe which extends in an upward/downward direction, and is configured to suction the liquid in the container body;
• an ejection barrel which is disposed in front of the vertical supply pipe, and is configured to guide the liquid in the vertical supply pipe to the ejection hole;
• a trigger which is disposed in front of the vertical supply pipe to be movable rearward in a state where the trigger is biased forward;
• a piston which has a tubular piston body to which the trigger is linked and a sliding portion connected to the piston body, and is configured to move forward and rearward according to forward and rearward movement of the trigger;
• and
• a cylinder which has a piston guide inserted into the piston body, and inside of which is pressurized and depressurized by the sliding portion sliding on the cylinder according to forward and rearward movement of the piston,
• wherein a recovery passage is formed in the ejector body, the recovery passage being configured to bring an inside of the cylinder in communication with an inside of the vertical supply pipe via a space between the piston body and the piston guide,
• wherein the vertical supply pipe has a mounting tube into which the recovery passage opens,
• wherein the trigger type liquid ejector further comprises an upright and inverted posture adaptor which is attached into the mounting tube in a state where communication between the recovery passage and an inside of the container body is blocked,
• wherein the upright and inverted posture adaptor includes:
• an adaptor body which defines a first space and a second space, the first space being configured to bring the inside of the container body in communication with the inside of the vertical supply pipe via an upright posture introduction port, the second space being configured to bring the inside of the container body in communication with the first space via an inverted posture introduction port;
• and
• a first switching valve which is configured to block communication between the first space and the second space when the container body, on which the ejector body is mounted, is upright, and is configured to allow communication between the first space and the second space when the container body, on which the ejector body is mounted, is inverted,
• wherein a communication passage is formed between an outer circumferential surface of the upright and inverted posture adaptor and an inner circumferential surface of the mounting tube, the communication passage being configured to bring the recovery passage in communication with the inside of the container body, and
• wherein a minimum value of a flow passage cross-sectional area of the communication passage is larger than a minimum value of a flow passage cross-sectional area of the recovery passage.