JP2000189862A - Trigger type liquid jetting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make safely lockable a trigger as to make the trigger operation impossible, regarding a trigger type liquid jetting container in which a nozzle cylinder is engaged with an ejection front part in a rotatable manner to make it possible to pump up a liquid in a container body by pulling operation of a trigger hung down from the ejection front part and jet the liquid through the nozzle cylinder. SOLUTION: In this jetting container, a window hole 8 is vertically formed in a trigger 5, a crank 10 having axes 9 projected from both right and left sides of the curved part is installed, a first arm 11 of the crank projected from the curved part is set upward from a lower part of the window hole and a second arm 12 is projected backward to engage the rear face of the engaging projected part 13 in the second arm upper face with a lower part of the front end face of a cylinder 4, and the axes 9 are hinged to the trigger part 5 on the lower rear side of the window hole. Further, a strike plate 24 further projected from an engagement plate projected backward through a hung down part 22 from a side face of a nozzle cylinder 6 is engaged with the lower face of the second arm 12 by freely parting manner by rotation movement of the nozzle cylinder 7 relative to the ejection cylinder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a trigger type liquid ejection container.

[0002]

2. Description of the Related Art As shown in, for example, Japanese Patent Application Laid-Open No. 10-146548, a main cylinder is erected from a cap-shaped part to be fitted to the mouth and neck of a container body, and the cylinder is injected from the front of the main cylinder and from the upper end of the main cylinder. Each of the cylinders protrudes forward, and the nozzle cylinder is fitted to the front of the injection cylinder, and the plunger fitted into the cylinder slides by the operation of the trigger that is pivotally attached to the front of the injection cylinder and hangs down. The liquid in the container is sucked into the cylinder via the suction valve, and the liquid in the cylinder is ejected from the nozzle hole formed in the front wall of the nozzle cylinder via the discharge valve.
There is also known a liquid ejector provided such that a liquid discharge path portion communicates with or shuts off when a nozzle cylinder rotates with respect to an injection cylinder. It is known that the above-mentioned cylinder protrudes obliquely forward from an upper part of the main cylinder immediately below the rear part of the injection cylinder, and it is also considered that the cylinder is vertically suspended from the injection cylinder.

[0003]

The above-mentioned trigger type liquid ejection container is provided so as to be able to connect or shut off the liquid ejection path portion by turning the nozzle cylinder with respect to the injection cylinder. If the portion is shut off, even if an attempt is made to pull the trigger in this state, the liquid contained in the cylinder and the injection cylinder cannot be discharged, and therefore, the trigger cannot be swung, and the nozzle cylinder cannot be moved. It constituted a safety device for liquid ejection.

However, actually, when the trigger is pulled while the safety device is being operated, the trigger slightly swings, and each time the trigger is pulled, the plunger retreats slightly and moves forward to gradually move the cylinder. And when the pressure in the liquid discharge path section from the cylinder to the liquid discharge path opening / closing section is increased, and when the nozzle cylinder is returned from the closed position to the open position, the high-pressure liquid is not subjected to the trigger operation. In spite of this, it was sometimes ejected from the nozzle hole.

In order to eliminate the above-mentioned drawback, when a lock portion is protruded from the side surface of the nozzle cylinder and the nozzle cylinder is turned to a liquid discharge path shut-off position, that is, a closed position, an engagement portion of the lock portion serves as a trigger. Although it is conceivable to provide the nozzle cylinder so as to engage with the rear surface, if the trigger is accidentally pulled, the nozzle cylinder will be pulled downward and rearward through the lock portion, so that the nozzle cylinder with respect to the tip of the injection cylinder will be pulled. It is considered that the fitting may be incomplete and the backlash may easily occur.

According to the first aspect of the present invention, the trigger can be locked without affecting the nozzle cylinder irrespective of switching by turning the nozzle cylinder, which connects or disconnects the liquid discharge path. According to a second aspect of the present invention, as described above, in the liquid ejection container provided so as to be able to perform communication and blocking of the discharge path, that is, switching of opening and closing by rotation of the nozzle cylinder, It is provided so that the trigger can be locked without affecting.

[0007]

As a first means, a cylinder is protruded forward from an upright main cylinder having a cap-shaped cylinder screwed to the mouth and neck of a container body at a lower end thereof, and an injection cylinder from an upper end thereof. From the front of the injection cylinder to the upper part of the trigger
By engaging the plunger front end fitted into the cylinder, the operation of the trigger sucks up the liquid in the container and can be ejected from the nozzle cylinder rotatably fitted to the outer surface of the front end of the injection cylinder. In the trigger type liquid ejection container,
A window hole 8 is formed in the trigger 5 portion below the plunger engaging portion.
Is provided vertically, and a crank 10 that protrudes the shaft 9 from both the left and right surfaces of the curved portion is provided, and the first arm of the crank that protrudes from the curved portion.
11 from the lower part of the window hole to the upper side and the second arm 12 of the crank projecting from the curved part to the rear side.
The shaft 9 to the trigger part below the second arm 12 and the second arm 12
The engagement projection 13 attached to the rear upper surface of the second arm plate rear part 12a is located below the front end surface of the cylinder 4 and behind the engagement projection.
Is engaged with the lower surface of the front end portion, and a lock portion 21 is provided to project the engaging plate 23 rearward from the side surface of the nozzle cylinder 7 via the hanging portion 22, and the receiving plate 24 projecting from the engaging plate is provided. By engaging the lower surface of the second arm 12 and rotating the nozzle cylinder 7 to remove the receiving plate 24 from the lower surface of the second arm 12, the crank 10 is further rotated about the shaft 9 to rotate the nozzle plate 7. The engagement projection 13 of the two arms 12 is disengaged below the cylinder, and the trigger can be pulled in this state.

As a second means, a cylinder is protruded forward from an upright main cylinder having a cap-shaped cylinder screwed to the mouth and neck of the container body at the lower end, and an injection cylinder is protruded from the upper end, and is vertically suspended from a front part of the injection cylinder. The plunger front end fitted into the cylinder was engaged with the upper part of the provided trigger, and the liquid in the container was sucked up by the operation of the trigger, and was rotatably fitted to the outer surface of the front end of the injection cylinder. Can be ejected from the nozzle cylinder,
Further, in the trigger type liquid ejection container in which the liquid discharge path of the injection cylinder and the nozzle hole of the nozzle cylinder communicate with each other by turning the nozzle cylinder with respect to the injection cylinder and can be shut off, a trigger portion below the plunger engagement portion is provided. A window 10 is provided vertically, and a crank 10 is provided for projecting the shaft 9 from both right and left sides of the curved portion. A first arm 11 of the crank projecting from the curved portion is directed upward and outward from a lower portion of the window, and The second of the crank protruding from the curved part
Arms 12 are projected rearward, respectively, to pivot the shaft 9 below the window hole 8, and engaging projections 13 attached to the rear upper surface of the second arm 12 are positioned below the front end surface of the cylinder. In addition, the second arm plate portion behind the engaging projection is engaged with the lower surface of the front end portion, and the engaging plate 23 is moved from the side surface through the hanging portion 22 with the nozzle cylinder 7 in the nozzle hole blocking position. A locking portion 21 protruding rearward is provided, a receiving plate 24 protruding from the engaging plate is engaged with the lower surface of the second arm 12, and the receiving plate 24 is rotated when the nozzle cylinder 7 is rotated to a nozzle hole communicating position. Is disengaged from the lower surface of the second arm 12, and furthermore, by rotating the crank 10 about the shaft 9, the engaging projection 13 of the second arm 12 is disengaged below the cylinder, and the trigger is pulled in this state. Was made possible.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Is a well-known trigger-type liquid ejection container which is generally used. In brief, a cylinder 4 and an upright main cylinder from a main cylinder having a cap-shaped cylinder 3 screwed to the mouth and neck of the container body 2 at the lower end. Protrude the injection cylinder from the upper end, respectively,
Further, the front end of the plunger 6 fitted forward by being urged into the cylinder is engaged with the rear portion of the upper part of the trigger 5 which is pivotally attached to the front portion of the injection cylinder, and the liquid in the container is operated by operating the trigger. The liquid is sucked into the cylinder via a suction valve, and the liquid in the cylinder can be ejected from a nozzle hole of a nozzle cylinder 7 rotatably provided at the front end of the injection cylinder via a discharge valve. In the illustrated example, the upright main cylinder, the injection cylinder, and the outer surface of the cylinder are covered with a cover 14. The discharge path of the injection cylinder and the nozzle hole of the nozzle cylinder 7 may be provided so as to be communicated with or blocked by the rotation of the nozzle cylinder with respect to the injection cylinder. The communication may be always performed irrespective of the rotation of the cylinder.

In the illustrated example, the trigger 5 is formed by forming the side plates 5b, 5b from the right and left sides of the front wall 5a into a U-shaped cross section projecting rearward, and the front wall immediately below the plunger 6 engaging portion. A window hole 8 is provided vertically in the portion. Between the side plates 5b, 5b at the rear of the lower part of the window hole 8, a crank 10 projecting the shaft 9 from both right and left sides of the curved portion, and a first arm 11 projecting from the curved portion.
The second arm 12 projects upward and outward from the lower part of the window hole and from the curved part.
Are provided to project rearward, respectively, and the shaft 9 is attached to the side plate 5.
Connect to b and 5b. The crank 10 is rotatable about the shaft 9, and when the first arm 11 is projected upward and outward as shown in FIG. 1, the engagement projection 13 attached to the rear upper surface of the second arm 12 is provided. To the lower part of the front end face of the cylinder 4
The rear portion 12a of the second arm behind 13 is engaged with the lower surface of the front end of the cylinder, respectively, so that the rearward pulling operation of the trigger 5 cannot be performed in this state. When the engagement projection 13 is disengaged from the lower part of the front end surface of the cylinder as shown in FIG. 3, the crank rotates about the shaft 9 and the tip of the first arm 11 is moved to the upper end of the window hole 8. In this state, the trigger 5 can be pulled.

Reference numeral 21 denotes a hanging portion 22 from the side surface of the nozzle cylinder 7 described above.
The locking portion protrudes rearward through the engagement plate 23 through the second arm 12 from the engagement plate 23 with the rear surface of the engagement projection 13 of the second arm 12 engaged with the lower portion of the front end surface of the cylinder. The receiving plate 24 protrudes downward. In the illustrated example, a protruding portion 25 is protruded from the upper surface of the receiving plate, and the lower surface of the second arm 12 is supported by the upper surface of the protruding portion.
Trigger lock state is maintained.

As described above, in the case where the discharge path of the injection cylinder and the nozzle hole of the nozzle cylinder are provided so as to be able to communicate with each other by turning the nozzle cylinder with respect to the injection cylinder or to shut off the communication,
When the nozzle cylinder is in its shut-off position, the lock portion 21 hangs down to lock the trigger via the crank, and when the nozzle cylinder is turned to the communication position, the lock portion 21 moves upward as shown in FIG. Provide.

[0013]

According to the present invention, the engaging protrusion of the second arm 12 of the crank 10 pivotally attached to the trigger is provided.
13 is engaged with the lower part of the front end surface of the cylinder 4 and the engaging plate 23 of the lock portion 21 hanging down from the side surface of the nozzle cylinder 7 is engaged with the lower surface of the second arm 12 of the crank. Only 10 performs the operation, and the lock portion 21 hanging from the nozzle cylinder only prevents the second arm 12 from coming off the cylinder. Therefore, even if the trigger is pulled in the locked state, the force is reduced. It is not transmitted to the nozzle cylinder via the lock portion, but transmitted to the crank, so that the nozzle cylinder is not affected. In addition, the second engaging projection 13 is engaged with the lower part of the front end surface of the cylinder.
Since the lower surface of the arm 12 is supported by the receiving plate 24 of the lock portion, the engaging projection 13 of the second arm does not come off from the lower portion of the front end surface of the cylinder unless the receiving plate is removed.

In the case of the second aspect, the rotation of the nozzle cylinder with respect to the injection cylinder makes the discharge path openable and closable. When the receiving plate 24 of the lock portion supports the lower surface of the second arm, the nozzle cylinder 7 is connected to the discharge path. Since it is provided so as to be in the closed position, it is possible to reliably prevent liquid leakage from the nozzle hole of the nozzle cylinder, and when the lock part is removed, the nozzle cylinder also rotates to open the discharge path,
Trigger operation is convenient.

[Brief description of the drawings]

FIG. 1 is a side view of a liquid ejection container of the present invention, partially cut away.

FIG. 2 is a perspective view of the container of FIG. 1;

FIG. 3 is a side view of a partially cut-away view showing the container of FIG. 1 in an unlocked state.

FIG. 4 is a perspective view of the container of FIG. 3;

[Explanation of symbols]

 5. Trigger 8 ... Window hole 10 ... Crank 21 ... Lock part 23 ... Engagement plate 24 ... Receiving plate

Claims (2)

[Claims] 1. A trigger that protrudes forward from an upright main cylinder having a cap-shaped cylinder screwed to the mouth and neck of a container body at the lower end, and projects an injection cylinder from an upper end thereof, and also vertically extends from a front part of the injection cylinder. By engaging the plunger front end fitted into the cylinder to the upper part, the operation of the trigger sucks up the liquid in the container, and from the nozzle cylinder rotatably fitted to the front end outer surface of the injection cylinder. In a trigger-type liquid ejection container capable of being ejected, a window hole 8 is formed in a portion of the trigger 5 below the plunger engagement portion.
Is provided vertically, and a crank 10 that protrudes the shaft 9 from both the left and right surfaces of the curved portion is provided, and the first arm of the crank that protrudes from the curved portion.
11 from the lower part of the window hole to the upper side and the second arm 12 of the crank projecting from the curved part to the rear side.
The shaft 9 to the trigger part below the second arm 12 and the second arm 12
The engagement projection 13 attached to the rear upper surface of the second arm plate rear part 12a is located below the front end surface of the cylinder 4 and behind the engagement projection.
Is engaged with the lower surface of the front end portion, and a lock portion 21 is provided to project the engaging plate 23 rearward from the side surface of the nozzle cylinder 7 via the hanging portion 22, and a receiving plate 24 protruding from the engaging plate is provided. By engaging the lower surface of the second arm 12, rotating the nozzle cylinder 7 to remove the receiving plate 24 from the lower surface of the second arm 12, and further rotating the crank 10 about the shaft 9, A trigger type liquid ejection container characterized in that the engagement projection 13 of the two arms 12 is disengaged below the cylinder, and the trigger can be pulled in this state. 2. A trigger which protrudes forward from an upright main cylinder having a cap-shaped cylinder at the lower end thereof and which is screwed to the mouth and neck of the container body, and projects an injection cylinder from an upper end thereof, and also vertically extends from a front part of the injection cylinder. By engaging the plunger front end fitted into the cylinder to the upper part, the operation of the trigger sucks up the liquid in the container, and from the nozzle cylinder rotatably fitted to the front end outer surface of the injection cylinder. In the trigger-type liquid ejection container in which the ejection can be performed and the liquid ejection path of the ejection cylinder and the nozzle hole of the nozzle cylinder communicate with each other by turning the nozzle cylinder with respect to the ejection cylinder, the plunger engagement portion is provided. A window hole 8 is provided vertically in the lower trigger portion, and a crank 10 is provided for projecting the shaft 9 from both left and right sides of the curved portion, and a first arm 11 of the crank projecting from the curved portion is provided.
A second arm 12 of the crank projecting upward and outward from the lower part of the window hole and projecting rearward from the bent portion, and a shaft 9 is pivotally attached to a lower portion of the window hole 8; The engaging projection 13 provided on the rear upper surface of the cylinder 12 is engaged with the lower portion of the front end surface of the cylinder, and the second arm plate portion behind the engaging projection is engaged with the lower surface of the front end portion. In the state where the nozzle plate is in the nozzle hole blocking position, a lock portion 21 is provided that protrudes rearward from the side of the engaging plate 23 via the hanging portion 22 from the side surface.
When the nozzle cylinder 7 is rotated to the nozzle hole communication position, the receiving plate 24 is disengaged from the lower surface of the second arm 12, and the crank 10 is further rotated about the shaft 9. A trigger type liquid ejection container characterized in that the engagement protrusion 13 of the second arm 12 is disengaged below the cylinder, and the trigger can be pulled in this state.