JPH11216399A - Trigger type liquid ejector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an excellent trigger type liquid ejector certainly preventing trigger operation not in use or the like to prevent the leakage of a liquid, convenient to handle in use and having a simple structure. SOLUTION: In a trigger type liquid ejector equipped with the mounting cap B fitted in the mouth neck part 2 of a container body, the pump main body C erected from the upper end of the cap B to forwardly project an ejection cylinder 5 from the upper end thereof and the trigger D vertically provided from the front part of the ejection cylinder in a shakable manner, a ring-shaped part 6 is fitted to the outer peripheral part of the base end part of the pump main body C or the outer peripheral part of the mounting cap B in a revolvable manner and the engaging member E bringing the leading end edge of the engaging plate 7 extended forwardly from the ring-shaped part into contact and engagement with the rear surface of the trigger D is provided so as to be revolvable rearwardly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a trigger type liquid ejector.

[0002]

2. Description of the Related Art As a trigger type liquid ejector, for example,
The mounting cap fitted to the mouth and neck of the container body, and fitted and fixed above the cap, the cylinder is projected from the middle part of the vertical cylinder rising from the upper end of the mounting cap, and the injection cylinder is projected forward from the upper part. A pump body, a nozzle head fitted to the tip of the injection cylinder, and a tip end of a plunger vertically swingably suspended from the front part of the injection cylinder and fitted in the cylinder in a forward biased state. There is a known configuration that includes a trigger in which the liquid can be pushed into the container, and the operation of the trigger sucks up the liquid in the container body by the operation of the built-in pump mechanism and ejects the liquid from the outlet of the nozzle head.

[0003] In addition, in order to prevent liquid leakage due to careless operation of a trigger or mischief at the time of displaying products, a nozzle fitting tube provided at a front end of an injection tube is generally used. The head is rotatably provided, and the opening and closing mechanism is provided to shut off the communication of the liquid flow path by rotating the nozzle head between the two, and to communicate when returning to the original state.

[0004]

However, even in the apparatus provided with the opening / closing mechanism described above, the trigger is locked by the hydraulic pressure through the plunger so that the trigger cannot be pushed in. When the trigger is pulled frequently, the plunger can be slightly pushed in, and high-pressure liquid may accumulate in the front part of the injection cylinder downstream of the discharge valve through the discharge valve due to abnormally high pressure in the cylinder. When the nozzle head is turned to the liquid flow path communication position, the high-pressure liquid accumulated in the front part of the injection cylinder becomes
Even if the trigger operation is not performed, there is a problem that the nozzle head is ejected from the nozzle hole, or if the trigger is strongly pulled, the nozzle head may come off from the nozzle fitting cylinder due to a high pressure in the injection cylinder.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is possible to reliably prevent a trigger operation at the time of non-use or the like to solve the above-mentioned inconvenience. The present invention proposes an excellent trigger type liquid ejector having a simple structure.

[0006]

According to a first aspect of the present invention, there is provided an ejector according to the present invention, in which a mounting cap B fitted to a mouth and neck portion 2 of a container body A and an erecting spout from an upper end of the mounting cap. A pump body C having the injection cylinder 5 protruding forward from the upper part, and a trigger D vertically swingably provided from the front of the injection cylinder 5
In a trigger type liquid ejector configured to suck up the liquid in the container body by the operation of the built-in pump mechanism by operating the trigger and eject it from the ejection port at the tip of the injection cylinder,
The ring-shaped portion 6 is fitted to the outer peripheral portion of the base end portion of the pump body C or the outer peripheral portion of the mounting cap B so as to be rotatable and unable to come out, and the leading edge of a locking plate 7 extending forward from the ring-shaped portion 6. Is formed as a trigger-type liquid ejector characterized in that a locking member E, which is brought into contact with the rear surface of the trigger D, is provided so as to be able to rotate backward.

Further, in the ejector according to the second aspect of the present invention, the side plate 9 contacting the side of the pump body C from one side edge of the locking plate 7.
The trigger type liquid ejector according to claim 1 is provided upright.

According to a third aspect of the present invention, in the trigger type liquid ejector according to the first aspect of the present invention, a protrusion 7a is provided in which a tip edge of the locking plate 7 is raised in a mountain shape in a side view. Configured.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. The trigger type liquid ejector of the present invention includes a mounting cap fitted to the mouth and neck of the container body, a pump main body rising from the upper end of the mounting cap and projecting the injection cylinder forward from above, and swinging from the front of the injection cylinder. And a well-known pump mechanism configured to draw up the liquid in the container by the operation of the built-in pump mechanism by the operation of the trigger and eject the liquid from the ejection port at the tip of the injection cylinder. .

In the illustrated example, a mounting cap B fitted to the mouth and neck portion 2 of the container body A and a cylinder 4 are fitted and fixed above the mounting cap, and the cylinder 4 is inserted from an intermediate portion of the vertical cylinder 3 rising from the upper end of the mounting cap. A pump body C is formed by projecting the injection cylinder 5 forward from the upper part thereof, and a trigger D is provided so as to swing from a front part of the injection cylinder 5.

According to the present invention, in the above-mentioned type of ejector, the trigger D is prevented from being carelessly retracted when not in use, and is brought into contact with the upper surface of the gripped hand during use to facilitate handling. A stop member E is provided.

In the embodiment shown in FIGS. 1 to 4, the ring-shaped portion 6 is rotatably fitted to the outer peripheral portion of the base end portion of the pump body C, and a locking member extending forward from the ring-shaped portion 6 is provided. An example is shown in which the leading edge of the plate 7 is abutted against the rear surface of the trigger D so as to be rotatable rearward. The upper surface of the mounting cap B and the base of the pump body C protruding from the upper end opening of the cap are shown. The ring-shaped portion 6 is rotatably fitted between the lower surface of the locking protrusion 8 protruding from the outer periphery of the end.

Further, the tip of the locking plate 7 may be formed in an arc shape protruding forward, so that it can be easily rotated and abutted on the rear surface of the trigger D, and particularly to a trigger having a structure described later. Can be stably engaged.

When not in use, as shown in FIGS. 1 and 2, the locking member E is rotated forward so that the trigger D cannot be retracted. In use, as shown in FIGS. 3 and 4, the locking member E is rotated rearward, and the upper surface of the hand gripped from the outer periphery of the upper end of the container body to the outer periphery of the mounting cap is moved to the lower surface of the locking plate 7. , So as to prevent displacement of the grasped container.

The embodiment shown in FIGS. 5 to 8 shows an example in which a locking member E is provided in which a side plate 9 that abuts one side edge of the locking plate 7 on one side of the pump body C is provided. .

In this embodiment, as shown in FIG.
A quarter-circle side plate 9 is erected above the right front edge of the
When the front edge of the locking plate 7 contacts the rear surface of the trigger D, the locking plate 7 is configured to contact the side surface of the pump body C so that the locking plate 7 can be easily and reliably rotated to a predetermined position in front. I have.

The locking member E of the present invention is shown in FIGS.
As shown in the figure, the front edge of the locking plate 7 may be formed as a raised portion 7a which is formed in a mountain shape as viewed from the side, the front surface of which is an arcuate surface. If you increase the contact area and accidentally pull the trigger,
The configuration is such that pushing of the plunger due to bending of the trigger is prevented as much as possible.

In each of the above embodiments, an example is described in which the ring-shaped portion is rotatably fitted to the outer periphery of the base end of the pump body and the locking member E is mounted. Member E
May be configured such that the ring-shaped portion is rotatably fitted to the outer periphery of the mounting cap B and mounted.

Hereinafter, other portions in the above embodiment will be described. The mounting cap B has a configuration in which a flange 11 extends inward from an upper end edge of a peripheral wall 10 screwed to the outer periphery of the container body neck portion 2.

In the pump body C, a fitting cylinder 12 having a lower end portion of the vertical cylinder 3 protruding downward at a rear center eccentric position is provided at the lower end portion. Further, a large-diameter cylindrical portion 13 having an upper outer periphery fitted to the inner peripheral surface of the fitting cylinder 12 and a lower end protruding to the rear eccentric position in the large-diameter cylindrical portion 13 by being fitted to the inner peripheral surface of the vertical cylinder 3. And the small-diameter cylindrical part 14
The flange 16 is connected by a flange-like top plate 15 extending from the upper edge of the large-diameter tube portion 13, and the upper surface of the large-diameter tube portion 13 is brought into contact with the lower surface of the fitting tube 12 to project the flange 16 outward from the lower portion. The inner wall forming member F is provided, and the flange 11 is provided on the upper surface of the flange 16.
The mounting cap B is mounted on the pump main body C so as to be rotatable and unable to come out of the pump body C, and the flange 16 which is brought into contact with the upper surface of the neck portion 2 of the container body via a packing or the like is fitted to the flange of the mounting cap B. The structure is such that the pump main body C is fixedly mounted on the container body A by pressing and fixing by 11.

A nozzle head G is connected to the tip of the injection cylinder 5 via a connecting member. The nozzle head G has a known opening / closing mechanism that can open and close the ejection port by rotating in the left-right direction.

The outer peripheral edge of the rear portion is slidably fitted tightly on the inner surface of the cylinder 4 and urged forward by a coil spring 17, and the distal end portion is provided so as to be pushed forward by projecting forward from the cylinder 4. A plunger H is provided, and the front of the plunger is linked to the upper part of the trigger D.

The trigger D has side plate portions 19, 19 extending rearward from both sides of the front plate portion 18, respectively. The tip of a pressing rod 20 protruding from the upper rear surface of the front plate portion 18 is inserted into the tip recess of the plunger H. And the plunger H can be pushed in.

A pipe 21 is provided at the lower end opening of the small-diameter cylindrical portion 14.
And the lower end thereof is hung below the container. Further, the rear part of the plunger H is formed in a hollow cylindrical shape, and the auxiliary cylinder
A plunger H is slidably fitted tightly on the outer surface of the auxiliary cylinder 22. Further, communication holes 23 and 24 are respectively provided in the cylinder wall of the vertical cylinder 3 between the cylinder 4 and the auxiliary cylinder 22 and the cylinder wall of the vertical cylinder 3 at the base end of the injection cylinder 5. The inside of the container A and the inside of the vertical cylinder 3 are communicated via the pipe 21, the inside of the vertical cylinder 3 and the inside of the cylinder 4 are communicated via the communication hole 23, and further, the inside of the vertical cylinder 3 via the communication hole 24. And the inside of the injection cylinder 5, thus forming a liquid flow path from the inside of the container to the ejection port 25 at the tip of the injection cylinder 5. Also,
A suction valve 26 is provided in a lower part of the vertical cylinder 3 which is located upstream in the cylinder 4, and a discharge valve 27 is provided in an upper part of the vertical cylinder 3 which is located downstream in the cylinder 4. Further, an outside air introduction path a is provided at one end of the sliding portion of the plunger H of the cylinder 4 and opens above the neck of the container body at the other end.

In the case of using the pump constructed as described above, when the trigger D is pulled forward, the plunger H moves rearward, the liquid in the cylinder 4 is pressurized, the discharge valve 27 is opened and the injection is opened. It is ejected from the ejection port 25 at the tip through the cylinder 5. Next, when the trigger D is released,
The plunger H moves forward due to the elastic restoring force of the coil spring 17, and accordingly, the trigger D is pushed back to its original state and returned. At this time, the pressure in the cylinder 4 becomes negative because the plunger H moves forward, the discharge valve 27 closes, the suction valve 26 opens, and the liquid in the container A is introduced into the cylinder 4 via the pipe. Further, at this time, outside air is introduced into the container body, which becomes negative pressure as the liquid decreases, through the outside air introduction path.

Incidentally, in the figure, reference numeral 28 denotes a cover constituting the pump body. Further, each of the above members can be formed mainly using a synthetic resin, and can be formed by using an elastomer, a metal, or the like in combination as needed.

[0027]

As described above, the container of the present invention has the above-described structure, and particularly, the ring-shaped portion is rotatably fitted to the outer peripheral portion of the base end portion of the pump body or the outer peripheral portion of the mounting cap so as not to come out. In addition, a locking member formed by abuttingly locking the leading edge of the locking plate extending forward from the ring-shaped portion to the rear surface of the trigger is provided so as to be able to rotate backward, so when not in use, The locking member can reliably prevent the trigger from being pulled in and prevent inadvertent leakage of the liquid, and when used, the locking plate pivots to the rear of the pump body, so the hand holding the container holds the bottom of the locking plate. It is extremely convenient to handle without causing any inconvenience such as the container being displaced due to contact with the container.

Further, in the case where a side plate abutting on the side surface of the pump body is provided upright from one side edge of the locking plate, when the locking member rotated rearward is shifted to the front non-use state. In addition, it can be easily rotated to an appropriate position, and the handling operation is further simplified.

Further, in the case where the locking plate is provided with a raised portion in which the distal end edge is raised in a mountain shape when viewed from the side, when the trigger is erroneously pulled, the bending of the trigger affects the pump mechanism. As much as possible to prevent inadvertent liquid leakage more reliably.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.

FIG. 2 is a perspective view of the embodiment.

FIG. 3 is a vertical cross-sectional view showing a state where the locking member of the embodiment is rotated rearward.

FIG. 4 is a perspective view showing a state in which the locking member of the embodiment is rotated rearward.

FIG. 5 is a longitudinal sectional view showing another embodiment of the present invention.

FIG. 6 is a perspective view of the same embodiment.

FIG. 7 is a longitudinal sectional view showing a state where the locking member of the embodiment is rotated rearward.

FIG. 8 is a perspective view of a state where the locking member of the embodiment is rotated rearward.

[Explanation of symbols]

2 ... mouth and neck, 5 ... injection cylinder, 6 ... ring-shaped part, 7 ... locking plate, 7a ... raised part, 9 ... side plate, A ... container body, B ... mounting cap, C ... pump body, D ... trigger, E: Locking member

Claims (3)

[Claims] 1. A mounting cap B fitted to the mouth and neck portion 2 of a container body A; a pump body C rising from an upper end of the mounting cap and projecting an injection cylinder 5 forward from an upper part; The trigger type liquid ejector is provided with a trigger D which is swingably vertically suspended from the container, and is configured so that the operation of the trigger sucks up the liquid in the container body by the operation of the built-in pump mechanism and ejects the liquid from the ejection port at the tip of the injection cylinder. In the above pump body C
The ring-shaped portion 6 is rotatably and undetachably fitted to the outer peripheral portion of the base end portion or the outer peripheral portion of the mounting cap B, and the leading edge of the locking plate 7 extending forward from the ring-shaped portion 6 is attached to the rear surface of the trigger D. Locking member E, which is abutted and locked to
A trigger type liquid ejector characterized by being provided so as to be able to rotate backward. 2. A pump body C from one side edge of the locking plate 7.
The trigger type liquid ejector according to claim 1, wherein a side plate (9) contacting the side surface is provided upright. 3. The trigger type liquid ejector according to claim 1, wherein a protruding portion 7a is formed by protruding a tip end of said locking plate 7 into a mountain shape in a side view.