JP2005103369A - Trigger type liquid jet unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a trigger type liquid jet unit capable of preventing damage of first and second engagement projections caused by erroneously, strongly and rearwardly pulling a trigger in the engagement state in the trigger type liquid jet unit which makes the trigger impossible to be rearwardly pulled by the closure of a liquid delivery passage caused by turning of a nozzle cap in a reverse direction and by the descent of a stopper member by which a first engagement part of the stopper member is engaged with a second engagement part of the trigger. <P>SOLUTION: The first engagement projection 13 is auxiliarily provided on a rear part lower surface of a first projection plate 22 rearwardly projected from the stopper member 12 to make it engageable with a rear surface of the second engagement projection 14. The first projection plate 22 is elastically deformed by forced operation of the trigger 9 for rearward pulling to release the engagement. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a trigger type liquid ejector.

The trigger type liquid ejector usually rotates the nozzle cap fitted to the front end of the injection cylinder in the forward direction to open the liquid discharge path to the nozzle hole of the nozzle cap, and the discharge by rotating in the reverse direction. The stopper is provided on the outer surface of the front part of the injection cylinder behind the nozzle cap so that various troubles may occur if the trigger is accidentally operated in the closed state of the discharge path. In the closed state, the stopper member is lowered so that the first engagement protrusion of the stopper member and the second engagement protrusion of the trigger are engaged, and the trigger rearward pulling operation is disabled. There is a trigger type liquid ejector (Patent Document 1).
Japanese Patent Application No. 2002-286823.

  In the trigger type liquid ejector as described above, it is not necessary to perform the pulling operation because it is impossible to perform the pulling operation of the trigger in the closed state of the liquid discharge path. Some consumers do not realize that the attraction is impossible and try to force the attraction. Even if such operation is performed, if the liquid is in the ejector, the cylindrical piston in the cylinder does not move backward due to the blockage of the discharge path, so the trigger cannot be pulled backward. In the case where liquid is not contained in the ejector, such as when performing, the trigger is retracted by pushing the cylindrical piston backward, and the first or second engaging projection may be damaged. .

  According to the present invention, when the trigger is forcibly pulled as described above, the engagement protrusions are disengaged and can be prevented from being damaged.

As a first means, by rotating the nozzle cap 11 in the reverse direction, the liquid discharge path is closed and the stopper member 12 is lowered, so that the first engaging protrusion 13 of the stopper member and the second engaging protrusion of the trigger 9 In the trigger type liquid ejector that is unable to pull the trigger backward by engaging with 14,
The first engaging protrusion 13 is attached to the rear part of the first overhanging plate 22 protruding backward from the stopper member so that it can be engaged with the second engaging protrusion 14, and the trigger 9 is forcibly pulled backward. Thus, the rear portion of the first overhanging plate 22 is elastically bent upward so that the engagement can be released.

As a second means, the liquid discharge path is closed and the stopper member 12 is lowered by rotating the nozzle cap in the reverse direction, and the first engaging protrusion 13 of the stopper member and the second engaging protrusion of the trigger are moved downward. In the trigger type liquid ejector that engages 14 and disables the rear pulling operation of the trigger,
The first and second engaging protrusions 13 and 14 are attached to the lower and upper surfaces of the rear portions of the first and second projecting plates 22 and 23 protruding rearward from the stopper member and the trigger. At least one or both of the two overhanging plates were elastically deformed by the forced pulling of the trigger so that both the engaging protrusions could be detached.

  As a third means, the first or second means is provided, and a release sound is generated when the first and second engaging protrusions 13 and 14 are disengaged by the forcible operation of pulling the trigger rearward.

  By performing the rearward pulling operation of the trigger forcibly in the liquid discharge path closed state, the first and second engagement protrusions 13 and 14 are disengaged. It is possible to avoid breakage of the engaging protrusions.

  According to the third aspect of the present invention, when the first and second engaging protrusions are released due to the forced pulling of the trigger backward, the disengagement sound is generated. , You can know the operation error by the sound.

  The drawings will be described below. First, a conventionally known matter will be briefly described. 1 is a container body, 2 is a trigger-type liquid ejector, and the ejector body 3 has an upper end of a suction main cylinder 4 projecting forward from an injection cylinder 5 and absorbing them. The cylinder 6 protrudes downward and forward from the inner corner where the upper part of the raised main cylinder and the rear part of the injection cylinder are continuous, and the base cylinder part 7 is suspended from the lower part of the suction main cylinder and the lower surface of the base of the cylinder. The mounting cylinder 8 is suspended so as to be pivotable from the section, and the mounting cylinder is screwed into the container body neck.

  A bifurcated upper portion is pivotally attached to the front portion of the injection cylinder 5 so that the trigger 9 can freely swing in the front-rear direction, and is urged forward and downward into the cylinder. The rear end of the engagement rod projected from the rear surface of the trigger is engaged with the front surface of the cylindrical piston 10.

  A nozzle cap 11 is fitted to the outer surface of the front end portion of the injection cylinder 5, and a stopper member 12 is fitted to the outer surface of the front part of the injection cylinder at the rear of the cap, and the nozzle cap is rotated when the nozzle cap is rotated in the forward direction. 2 pushes up the stopper member as shown in FIG. 2, and at this time, the above-described discharge passage is opened, and when it is turned in the opposite direction, the stopper member 12 is lowered as shown in FIG. The first engaging ridge 13 is engaged with the rear surface of the second engaging ridge 14 of the trigger to make the trigger backward pulling operation impossible, and the discharge passage is closed.

  In the illustrated example, the nozzle cap 11 is rotated by rotating the cover member 17 that hangs the baffle plate 16 from the side surface of the cover 15 fitted to the outer surface of the cap. The baffle plate 16 hangs down along the front surface of the trigger 9, and the baffle plate is pivoted upward to rotate the cover 14 and the nozzle cap 11 in the forward direction so that the discharge path is opened. However, the cover member is not necessarily required, and may be provided if necessary.

  In the above configuration, when the trigger 9 is pulled several times from the state where the discharge passage is opened for the first time, the air in the suction main cylinder 4, the cylinder 6 and the injection cylinder 15 is discharged and the liquid in the container is replaced. When the trigger 9 is pulled from the state, the suction valve in the proximal end of the injection cylinder is closed by increasing the pressure in the cylinder 6, the discharge valve in the middle of the injection cylinder is opened, and the mist from the nozzle hole 18 passes through the injection cylinder 5. The mist is mixed with the room air by the collision with the inner wall surface of the foaming chamber 19 formed between the top plate of the cover and the cover, and the foam is blown from the foam ejection holes 21 formed in the top plate 20 by foaming. Released.

  When the trigger 9 is released, the cylindrical piston 10 is restored, so that the trigger is pushed back. At this time, the suction valve is also closed.

  In the present invention, the first overhanging plate 22 that protrudes backward from the lower end of the stopper member 12 and has the first engaging protrusion 13 attached to the lower surface of the rear end, and protrudes backward from the rear surface of the trigger to the upper surface of the rear end. Either one or both of the second engagement plates 23 to which the two engagement protrusions 14 are attached can be elastically deformed, and the first engagement is performed when the above-described discharge passage is closed and the stopper member 12 is lowered. When the trigger 9 is further forcibly pulled from the state in which the rear surface of the second engagement protrusion 14 is engaged with the front surface of the protrusion 13 and the trigger cannot be pulled, the first and second overhangs as shown in FIG. One or both of the plates 22 and 23 are elastically deformed upward or downward to disengage the engagement.

  Since the disengagement of the engagement is caused by strongly pulling the trigger 9 backward, a considerable disengagement sound is generated at the disengagement. The disengagement sound includes a sudden elastic restoring sound when the first and second overhanging plates 22 and 23 are disengaged at the time of disengagement and a driving sound when colliding with another object. .

It is sectional drawing which shows this invention liquid ejector in a discharge channel obstruction | occlusion state. 1 is a cross-sectional view showing the liquid ejector in a discharge channel open state. It is sectional drawing shown in the state which forcedly pulled the trigger from the state of FIG.

Explanation of symbols

3 Jet body 5 Injection cylinder 6 Cylinder 9 Trigger
11 Nozzle cap 13 First engagement protrusion
14 Second engagement protrusion 18 Nozzle hole
22 First overhang plate 23 Second overhang plate

Claims (3)

By rotating the nozzle cap 11 in the reverse direction, the liquid discharge path is closed and the stopper member 12 is lowered, and the first engagement protrusion 13 of the stopper member and the second engagement protrusion 14 of the trigger 9 are engaged. , In the trigger type liquid ejector that the trigger pulling operation of the trigger is impossible,
The first engaging protrusion 13 is attached to the rear part of the first overhanging plate 22 protruding backward from the stopper member so that it can be engaged with the second engaging protrusion 14, and the trigger 9 is forcibly pulled backward. The trigger liquid ejector is characterized in that the rear portion of the first overhanging plate 22 is elastically bent upward so that the engagement can be disengaged. By rotating the nozzle cap in the reverse direction, the liquid discharge path is closed and the stopper member 12 is lowered, and the first engagement protrusion 13 of the stopper member and the second engagement protrusion 14 of the trigger are engaged by the downward movement. In the trigger type liquid ejector that makes it impossible to pull the trigger backward,
The first and second engaging protrusions 13 and 14 are attached to the lower and upper surfaces of the rear portions of the first and second projecting plates 22 and 23 protruding rearward from the stopper member and the trigger. A trigger type liquid ejector characterized in that at least one or both of the two overhanging plates are elastically deformed by forced pulling of the trigger so that the both engaging projections can be detached. 3. The trigger type liquid ejector according to claim 1, wherein a release sound is generated when the first and second engaging protrusions 13 and 14 are disengaged by a forcible operation of trigger rearward pulling.

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