JP2001038259A - Trigger type liquid jetting container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a liquid allowed to flow into a liquid flowing part excessively by the swing of a trigger after the blockage of a liquid jetting hole and an injection cylinder hole, from being jetted when an operating cylinder is rotated reversely, and prevent a finger from being inserted into a trigger swing space as much as possible, by rotating the operating cylinder to a blockage position. SOLUTION: A fitting groove 16, which is formed by punching a trigger front wall 14 so as to leave only its lower end, in the upper end of a plate spring 15 is fitted to a fitting projection streak 17 on the lower surface of a cylinder. An arm 19 is protruded backward from an operating cylinder 18 fitted to the outer surface of a nozzle cap 12, and a lock plate 20 is installed at the rear end of the arm. When the operating cylinder 18 is rotated to a blockage position of an injection cylinder hole 6 and of a liquid jetting part 11, the lock plate 20 is fitted to a trigger swing space A between the rear surfaces of the right and left sidewalls of the upper part of the trigger and the front surface of the upper end of the plate spring 15 so that a trigger 7 cannot be pulled backward.

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 Utility Model Application Laid-Open No. 6-31854, a main cylinder is erected from a mounting cylinder fitted to the mouth and neck of a container body, a cylinder is mounted from the front of the main cylinder, and an upper end of the main cylinder. , The front end of the plunger fitted into the cylinder is connected to the upper rear of the vertically mounted trigger which is pivotally attached to the front of the injection cylinder, and the trigger is urged forward. A trigger-type liquid ejection container is known in which a liquid in a container is sucked into a cylinder by swinging a trigger back and forth, and the liquid in the cylinder is ejected from a front end of an injection cylinder.

As shown in Japanese Utility Model Application Laid-Open No. 62-187665, nozzle caps having liquid ejection holes are rotatably fitted to the front end of the injection cylinder, and the fitting portions of the nozzle cap with respect to the injection cylinder are fitted to these fitting portions. It is also known to provide a liquid passage opening / closing mechanism that can rotate and allow the injection cylinder hole and the liquid ejection hole of the injection cylinder to communicate with each other and to shut off.

[0004]

In the former known example, even if the trigger is inadvertently pulled, the liquid is ejected from the front end of the injection cylinder, so that such an unexpected liquid ejection is prevented. It is desired to provide a safety device, and the latter known example is provided as such a safety device, but even in the latter known example, if the trigger is forcibly pulled with the safety device applied, When the trigger and the plunger are slightly retracted and advanced, the liquid in the container is sucked, and as a result, excessive liquid flows into the liquid inflow portion from the suction valve to the liquid passage opening / closing mechanism formed by the front part of the injection cylinder and the nozzle cap. When the opening / closing mechanism is opened by turning the nozzle cap in this state, there is a risk that the liquid that has been excessively filled will be ejected from the liquid ejection hole. In both known examples, a trigger swing space is provided between the trigger and the upper portion of the container body. However, the front-rear width of this space is relatively large, so that when the trigger is pulled, the space inside this space is increased. There was a risk that a finger would be inserted into the trigger and pinched between the trigger and the container. The present invention provides a safety device for disabling the trigger operation and, by arranging a leaf spring in the trigger swing space, prevents unexpected liquid ejection as described above, and allows a finger to enter the trigger swing space. This is provided to prevent this as much as possible.

[0005]

As a first means, a main cylinder 4 is erected from inside a mounting cylinder 3 fitted to a container body neck portion 2, and a cylinder 5 and a main cylinder are mounted from the front of the main cylinder. The front end of the plunger 8 fitted into the cylinder is connected to the rear upper part of the front wall 14 of the trigger, which is formed by projecting the injection cylinder 6 forward from the upper end and pivotally attached to the front of the injection cylinder. In addition, the trigger 7 is urged forward, and a nozzle cap 12 having a liquid jetting portion 11 is rotatably fitted to the front end of the injection cylinder.
The injection cylinder hole 6a of the injection cylinder and the liquid ejection part 1
A liquid passage opening / closing mechanism that can communicate with and shut off the liquid in the container 1 is provided so that the liquid in the container can be sucked into the cylinder by the forward and backward swinging of the trigger, and the liquid in the cylinder can be ejected from the liquid ejection unit 11. In the provided trigger-type liquid ejection container, a leaf spring 15 that punches out a left-right middle part of the trigger front wall 14 below the plunger connection portion, leaving only the lower end, and inclines and deforms the punched portion backward.
An operation in which the engaging means 16 attached to the upper end of the leaf spring is fitted to the fitting projection 17 or the fitting groove on the lower surface of the cylinder, and fitted to the lower outer surface of the nozzle cap 12 or the outer surface of the nozzle cap. From the lower outer surface of the tube 18 to the arm 19
At the rear end of the arm.
When the operating cylinder 18 is rotated to a position where the injection cylinder hole 6a and the liquid ejection part 11 are shut off, the lock plate 20
The trigger cylinder 7 is fitted into the trigger swing space A between the front end of the cylinder and the rear end of the trigger cylinder 7 so that the rearward movement of the trigger 7 is disabled.
By rotating the lock plate 20, the lock plate 20 is separated from the trigger swing space A, and the rearward movement of the trigger is enabled.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a trigger type liquid ejection container according to the present invention will be described below with reference to the drawings.
First, the known portion of the trigger type liquid ejection container will be briefly described. The main cylinder 4 is erected from the inside of the mounting cylinder 3 fitted to the outer surface of the mouth and neck portion 2 of the container body 1, and the cylinder 5 is positioned from the front of the main cylinder. The injection cylinder 6 is fitted into the cylinder 5 at the upper rear part of a horizontal cross-shaped U-shaped trigger 7 which projects forward from the upper end of the main cylinder, and is pivotally attached to the front part of the injection cylinder. The front end of the combined plunger 8 and the trigger 7
Is urged forward through a plunger 8 by a spring 9 provided inside the cylinder 5.

Further, the nozzle fitting tube 1 is inserted into the front end of the injection tube 6.
The nozzle cap 12 having the liquid ejecting portion 11 is rotatably fitted through the nozzle fitting tube 10 and the nozzle cap 12 and the nozzle cap 12 are respectively fitted to the nozzle fitting tube 10 and the nozzle cap 12 by rotating the nozzle cap 12 with respect to the nozzle fitting tube 10. A liquid passage opening / closing mechanism comprising a groove 13 which allows the injection cylinder hole 6a of the injection cylinder to communicate with the liquid ejection section 11 and which can be shut off;
The liquid in the container is transferred to the cylinder 5 by swinging the trigger 7 back and forth.
The liquid inside the cylinder is provided so as to be able to be sucked into the inside and to be ejected from the liquid ejection section 11.

According to the present invention, the leaf spring 15 is formed as a leaf spring 15 for punching while leaving only a lower end in the left-right direction of the trigger front wall 14 below the connecting portion of the plunger 8 and inclining and deforming the punched portion rearward. The fitting groove 16 formed on the rear surface of the upper end portion of the
Fit to the outer surface. Of course, it is also possible to form a fitting projection instead of the fitting groove 16 and a fitting groove instead of the fitting ridge 17, and to fit these together.

An arm 19 projects rearward from the lower surface of the operating cylinder 18 fitted to the outer surface of the nozzle cap 12,
A lock plate 20 is provided at the rear end of the arm, and the lock plate is fitted into the trigger swing space A between the rear surfaces of the right and left side walls above the trigger 7 and the front surface of the upper end of the leaf spring 15. At this time, an upward engaging step 21 is formed on the front surface of the upper end of the leaf spring 15, and the lower surface of the rear portion of the lock plate 20 is engaged with the upper surface of the engaging step 21, so that the lock plate 20 is triggered. Do not easily leave the swinging space A. As described above, in the illustrated example, the operation cylinder 18
The arm 19 is protruded from the operating cylinder. However, the present invention is not limited to this, and the arm 19 can be protruded rearward from the lower outer surface of the nozzle cap 12 by omitting the operating cylinder 18.

Next, the operation of the present embodiment will be described. FIG. 1 shows a state in which the trigger 7 can be pulled backward, and the lock plate 20 is provided in the trigger swing space A.
And the operation cylinder 18 is located at the communication position,
The injection cylinder hole 6a communicates with the liquid ejection section 11. When the leaf spring 15 is elastically deformed and the trigger 7 is pulled rearward, the liquid in the cylinder 5 is ejected from the liquid ejection section 11 through the discharge valve 22 and the ejection cylinder hole 6a. on the other hand,
When the trigger 7 is released and the plunger 8 moves forward by the urging force of both the spring 9 and the leaf spring 15, the liquid in the container is sucked into the cylinder 5 through the suction valve 23.

In order to disable the ejection of the liquid from the liquid ejection section 11, the operation cylinder 18 may be rotated from the above-mentioned communication position to a blocking position for blocking the injection cylinder hole 6a and the liquid ejection section 11. At the same time, the arm 19 rotates in the same direction, and the lock plate 20 fits into the trigger swing space A. This state is shown in FIGS.
Cannot be pulled backwards.

[0012]

In the trigger type liquid ejection container according to the first aspect of the present invention, since the arm provided with the lock plate protrudes from the operating cylinder, the trigger cannot be pulled backward at the shut-off position of the operating cylinder. Therefore, it is possible to prevent the liquid from excessively flowing into the liquid inflow portion due to the trigger swing after the liquid ejection hole and the injection cylinder hole are shut off as in the related art.

Further, since the upper end of the leaf spring formed by punching the trigger is fitted to the lower surface of the cylinder to cross the trigger swing space in the front-rear direction, it becomes difficult to insert a finger into the space. In addition, it is possible to prevent the finger from being pinched when the trigger is pulled backward, and the trigger is urged forward by the leaf spring in addition to the spring in the cylinder.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a trigger type liquid ejection container according to the present invention, showing a state in which the rear of the trigger can be pulled.

FIG. 2 is a cross-sectional view showing a state when the rear of the trigger cannot be pulled.

FIG. 3 is a sectional view taken along the line XX of FIG. 2;

FIG. 4 is a perspective view showing a state when the rear of the trigger cannot be pulled.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container body 2 neck and neck 3 Mounting cylinder 4 Main cylinder 5 Cylinder 6 Injection cylinder 6a Injection cylinder hole 7 Trigger 8 Plunger 11 Liquid ejection part 12 Nozzle cap 14 Trigger front wall 15 Leaf spring 16 Fitting groove 17 Fitting ridge 18 Operation cylinder 19 Arm 20 Lock plate A Trigger swing space

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E084 AA04 AA12 AB01 BA02 DB12 FA09 GA01 GB01 GB12 GB14 KB06 LB02 LC01 LC06 LD22 LD25 LD26

Claims (1)

[Claims] 1. A main cylinder 4 is erected from inside a mounting cylinder 3 fitted to a container body neck portion 2, and a cylinder 5 is projected from the front of the main cylinder and an injection cylinder 6 is projected from an upper end of the main cylinder. The front end of the plunger 8 fitted into the cylinder is connected to the rear upper part of the front wall 14 of the trigger that is pivotally attached to the front of the injection cylinder, and the trigger 7 is urged forward. A nozzle cap 12 having a liquid ejecting portion 11 is rotatably fitted to the front end of the injection cylinder, and an injection cylinder hole 6a of the injection cylinder and a liquid ejecting hole are formed in these fitting portions by rotating the nozzle cap 12 with respect to the injection cylinder. A liquid passage opening / closing mechanism that can communicate with and shut off the part 11 is provided, and the liquid in the container can be sucked into the cylinder by the forward and backward swing of the trigger, and the liquid in the cylinder can be ejected from the liquid ejection part 11 The trigger type liquid ejection container provided in Then, the middle part in the left-right direction of the trigger front wall 14 below the plunger connection part is punched while leaving only the lower end, and the punched part is attached to the upper end of the leaf spring as a leaf spring 15 which is inclined and deformed rearward. The engagement means 16 is fitted to the fitting projection 17 or the fitting groove on the lower surface of the cylinder, and the arm 19 is moved from the lower outer surface of the nozzle cap 12 or the lower outer surface of the operating cylinder 18 fitted to the nozzle cap outer surface. A lock plate 20 is provided at the rear end of the arm so as to protrude rearward, and when the operation cylinder 18 is rotated to a position where the injection cylinder hole 6a and the liquid ejection unit 11 are shut off, the lock plate 20 is positioned above the trigger. Into the trigger swinging space A between the rear surfaces of the left and right side walls and the front surface of the upper end of the leaf spring 15 to prevent the trigger 7 from being pulled rearward, and the injection cylinder hole 6a and the liquid ejection portion. 11 Operation cylinder 1 up to communication position with
A trigger type liquid ejection container characterized in that the lock plate 20 is separated from the trigger swing space A by rotating the trigger 8, and the trigger can be pulled rearward.