JP2003192063A - Trigger-type liquid spray - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To downsize a stopper member to make its vertical movement easy in a trigger-type liquid spray for vertically moving the stopper member by rotating a nozzle cap fitted over an external surface of a fitting cylinder projecting forward from a front end of an ejection cylinder to disable an operation of a trigger hanging from a front of the ejection cylinder swingably fore and aft by a rise of the stopper member. <P>SOLUTION: The stopper member 10 comprises a first engaging plate 12 projecting backward from a lower end of a sliding longitudinal plate 11, an engaging projection 12a attached to a lower surface of a rear of the first engaging plate, and a fitting hole 13 bored to fit over an external surface of a fitting cylinder 4 projecting forward from a front end of the ejection cylinder 3 on the longitudinal plate 11. When the stopper member 10 is pushed up by a rotation of the nozzle cap 5 fitted over the external surface of the fitting cylinder, the first engaging plate 12 comes close to a lower surface of the ejection cylinder 3, and a second engaging plate 14 protruding from a rear face of the trigger does not engage with the engaging projection 12a. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trigger type liquid ejector.

[0002]

As disclosed in Japanese Unexamined Patent Publication No. 2001-10655, a nozzle cap is rotatably fitted to an outer surface of a fitting cylinder that protrudes forward from a front end surface of the injection cylinder. A stopper member, which is interposed between and fitted vertically to the outer surface of the fitting cylinder, is formed so that it can be raised by the forward rotation of the nozzle cap and lowered by the reverse rotation. The lower part of the stopper member engages in the lowered position and disengages in the raised position with respect to the trigger that is oscillated in the backward direction from the above to hang down by being biased forward. In addition, there is known a trigger type liquid ejector capable of performing a trigger rearward pulling operation only at the detached position.

[0003]

The above-mentioned trigger type liquid ejector has an engagement plate for engaging the stopper member rather than the plunger pushing engagement plate projecting rearward from the rear surface of the trigger to prevent the trigger from swinging backward. Since it is projected from the lower part of the rear surface of the trigger, and the stopper member hangs loosely fitted to the front part of the injection cylinder, the stopper member becomes large in size and requires extra material. A large amount of force is also required to rotate the nozzle cap for moving the member up and down.

The present invention is provided to eliminate such drawbacks.

[0005]

As a first means, a nozzle cap 5 is rotatably fitted to the outer surface of a fitting cylinder 4 projecting forward from the front end surface of the injection cylinder 3, and the injection cylinder 3 and The stopper member 10, which is interposed between the nozzle cap 5 and vertically fitted to the outer surface of the fitting cylinder 4, is moved up by the forward rotation of the nozzle cap 5, and lowered by the reverse rotation. Trigger 7 formed so that it can be swung backward from the front of the injection cylinder and is urged forward to hang down.
In contrast, the lower part of the stopper member 10 is engaged in the lowered position and disengaged in the raised position, and the trigger rearward pulling operation can be performed only in the disengaged position. In the ejector, the stopper member 10 is caused to project rearward from the lower end of a sliding vertical plate 11 with a fitting hole 13 loosely fitted to the outer surface of the fitting cylinder 4, and the first engaging plate 12 is also projected. Formed by hanging the engaging projection 12a from the lower surface of the rear part of the
When the stopper member descends, the engaging projection 12a engages with the rear surface of the second engaging plate 14 protruding rearward from the upper part of the trigger, and when the stopper member rises, the first engaging plate 12 moves to the lower surface of the injection cylinder 3. The engaging projection 12a and the second engaging plate 14 are formed so as not to engage with each other by ascending to a position where they abut or come close to each other.

[0006] As a second means, the first means is provided, and the projecting plate 15 is projected outward from the outer surface of the front end portion of the injection cylinder except the lower surface thereof. Forward, a guide plate 17 having vertical grooves 16, 16 on the inner surface,
17 was projected, and the left and right side portions of the sliding vertical plate 11 were vertically movably fitted into the both vertical grooves.

[0007]

DETAILED DESCRIPTION OF THE INVENTION The drawings will be described below. First of all, a conventional known structure will be briefly described. 1 is a container body, 2 is a mounting cylinder fitted into the mouth and neck of the container body, and a main cylinder is erected from the inside of the mounting cylinder and an upper end of the main cylinder. The injection cylinder 3 projects from the front. The fitting cylinder 4 projects forward from the front end surface of the injection cylinder, and the nozzle cap 5 is rotatably fitted to the outer surface of the fitting cylinder. A cylinder 6 is provided so as to incline downward and forward from the lower surface of the front part of the main cylinder and the rear part of the injection cylinder. Further, a trigger 7 is hung down from the front part of the injection cylinder 3 so as to be able to swing rearward, and a plunger 8 pushing plate 9 fitted by being biased forward into the cylinder is projected from the rear surface of the trigger.

Further, between the front end of the injection cylinder 3 and the nozzle cap 5, the sliding vertical plate 11 of the stopper member 10 for projecting the first engaging plate 12 rearward from the lower end of the sliding vertical plate 11 is provided as shown in FIG. Further, a fitting hole 13 formed in the sliding vertical plate is freely fitted in the outer surface of the base of the fitting cylinder 4 so as to be vertically movable, and hangs down. Further, from a part of the rear end surface of the nozzle cap 5, an engaging element 5a shown in FIG. 3 is projected and loosely inserted into the fitting hole 13, and by rotating the nozzle cap 5, the engaging element 5a is moved. When it moves along the outer surface of the fitting cylinder 4 and is located above the upper surface of the fitting cylinder as shown in FIG. 4, the sliding vertical plate 11 is pushed up, and as shown in FIG. The sliding vertical plate 11 is provided so as to descend by moving to the outside of the side.

In the present invention, when the sliding vertical plate 11 is pushed up as shown in FIG. 4, the first engaging plate 12 protruding rearward from the lower end of the sliding vertical plate is transferred to the lower surface of the front portion of the injection cylinder 3. The height of the sliding vertical plate 11 was set to be short so as to be in contact with or close to it.
The first engagement plate 12 hangs an engagement protrusion 12a from the lower surface of the rear portion, and as shown in FIG. 4, when the stopper member 10 is raised, the trigger 7 can swing backward. That is, as shown in FIG. 1, when the stopper member is descending, the trigger 7
Since the second engaging plate 14 projecting from the rear surface is in contact with the front surface of the engaging protrusion 12a, the rearward swing of the trigger is impossible, but as shown in FIG.
When the trigger 7 is swung, the second engaging plate 14 and the engaging protrusion 12a do not engage with each other by moving upward, so that the plunger pushing plate 9 provided below the second engaging plate 14
Presses the plunger 8 into the inner part of the cylinder against the bias, and pressurizes the cylinder to eject the liquid from the nozzle cap through the injection cylinder.

The trigger portion above the second engagement plate 14 is formed by an arm plate formed by extending both left and right side plates of the trigger. As shown in FIG. It is located on both the left and right sides of the injection cylinder 3 so that the tip of the arm plate rises to both sides of the injection cylinder when the trigger is pulled rearward.

Further, according to the present invention, the projecting plate 15 is projected in a flange shape from the outer surface portion excluding the lower surface of the front end portion of the injection barrel 3, and the left and right outer end portions of the projecting plate 15 are forwardly extended to the inner surface. The guide plates 17, 17 having the grooves 16, 16 were projected, and the left and right sides of the sliding vertical plate 11 were vertically movably fitted into both of the vertical grooves as shown in FIG.

In the above structure, when the stopper member 10 is lowered as shown in FIG.
Even if the rear end of the second engagement plate 14 protruding rearward from the upper part of the trigger 7 contacts the front surface of the engagement cylinder portion 12a, it cannot be rearwardly rocked, so that the rear part of the trigger cannot be rocked. The protruding plunger pushing plate 9 is also unable to push the plunger 8. At this time, the nozzle hole 5b of the nozzle cap is closed.

Next, the nozzle cap 5 is rotated to move the engaging element.
When 5a is moved to the upper surface of the fitting cylinder 4, the sliding vertical plate 11 is pushed up because the left and right sides of the sliding vertical plate 11 are fitted into the vertical grooves 16, 16 of the guide plates 17, 17. At this time, the first engagement plate 12 of the stopper member 10 is pulled up to the vicinity of the lower surface of the injection cylinder 3, so that the trigger 7 can be swung backward. At this time, the nozzle hole 5b is opened, so that the liquid in the injection cylinder is ejected through the nozzle hole.

[0014]

The present invention has the above-described structure, and when the stopper member 10 is lifted by the rotation of the nozzle cap 5 as described in claim 1, the first engaging plate 12 of the stopper member is moved.
Is provided so as to contact or approach the lower surface of the injection cylinder 3,
The height of the stopper member can be made shorter than that of the above-mentioned conventional example, so that the material for forming the stopper member can be reduced. Therefore, the rotation of the nozzle cap for moving the stopper member up and down can be facilitated.

According to a second aspect of the present invention, the projecting plate 15 is projected outward from the outer surface except the lower surface of the front end portion of the injection cylinder, and the left and right outer ends of the projecting plate are projected forward, and the vertical grooves 16 and 16 are formed on the inner surface. The guide plates 17 having the projections 17 and 17 are protruded, and the left and right sides of the sliding vertical plate 11 are vertically movably fitted into the vertical grooves. The vertical movement of 5a facilitates vertical movement of the stopper member 10. Incidentally, in the above-mentioned conventional example, as a mechanism corresponding to the fitting of the left and right side portions of the sliding vertical plate 11 into the both vertical grooves 11, 11 in the present invention,
Since a guide is projected from the front surface of one side of the overhanging plate, and a vertical elongated hole is formed on one side of the sliding vertical plate in the left-right direction, the guide is vertically movably fitted in the vertical elongated hole. In contrast, in the case of the present invention, the guide and the vertically elongated hole for vertically moving the guide need not be provided, and the lateral widths of the overhang plate and the sliding vertical plate can be narrowed only by the guide and vertically elongated hole portions.

[Brief description of drawings]

FIG. 1 is a side view of a liquid ejector according to the present invention with a part cut away.

FIG. 2 is a front view of the liquid ejector shown in FIG. 1 with a cover removed.

FIG. 3 is an enlarged cross-sectional view of FIG. 1A-A ′ in the direction of the arrow.

FIG. 4 is a cross-sectional view of an essential part showing a state where the stopper member is pushed up.

FIG. 5 is an enlarged plan view showing the positional relationship between the injection cylinder and the upper end of the trigger.

[Explanation of symbols]

3 ... Injection cylinder 4 ... Fitting cylinder 5 ... Nozzle cap 5a ... Engagement element 7 ... Trigger 10 ... Stopper member 11 ... Sliding vertical plate 12 ... First engaging plate 12a ... Engaging protrusion 14 ... Second engaging plate 15 ... Overhang plate 16 ... Vertical groove 17 ... Guide plate

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3E014 PB01 PC03 PD11 PE14 PE18                       PE30 PF09 PF10                 3E084 AA04 AA12 AA24 AB01 BA02                       CB02 CC03 DA01 DB12 DC03                       FA09 FB01 GA04 GB04 GB13                       GB26 KB06 LB02 LD22

Claims (2)

[Claims] 1. A nozzle cap 5 is rotatably fitted to the outer surface of a fitting cylinder 4 projecting forward from the front end surface of the injection cylinder 3 and is interposed between the injection cylinder 3 and the nozzle cap 5. A stopper member that is fitted vertically to the outer surface of the fitting cylinder 4
The nozzle cap 5 is formed so that it can be raised by the forward rotation of the nozzle cap 5 and lowered by the reverse rotation thereof, and can be rocked backward from the front portion of the injection cylinder and biased forward. The lower part of the stopper member 10 is engaged with the hung down trigger 7 in the lowered position and disengaged in the raised position, and the trigger rearward pulling operation can be performed only in the disengaged position. In the trigger-type liquid ejector, the first engaging plate 12 is projected rearward from the lower end of the sliding vertical plate 11 with the fitting hole 13 in which the stopper member 10 is loosely fitted to the outer surface of the fitting cylinder 4. , The engaging projection from the lower surface of the rear portion of the first engaging plate
When the stopper member descends, the engaging projection 12a is engaged with the rear surface of the second engaging plate 14 projecting rearward from the upper part of the trigger, and when the stopper member rises, the first engaging member 12a is engaged. A trigger-type liquid ejector characterized in that the plywood (12) rises to a position where it comes into contact with or comes close to the lower surface of the injection cylinder (3), and the engagement projection (12a) and the second engagement plate (14) are made incapable of engaging. 2. A guide having protrusions 15 protruding outward from the outer surface of the front end portion of the injection cylinder except the lower surface thereof, and having both left and right outer ends of the protrusion plate forward, and vertical grooves 16, 16 on the inner surface. Board
17 and 17 are projected into the both vertical grooves, and the sliding vertical plate 11
2. The trigger type liquid ejector according to claim 1, wherein both left and right side portions of said are fitted so as to be vertically movable.