JP2000070793A - Trigger type liquid ejection pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent triggering at the time of use by providing the pump with a detaining member which is constituted by fitting a fitting plate part extended backward from the rear edge of a skirt part on the side covering the one flank of a trigger into a recessed part hollowed in the side wall part of a cover in such a manner that the turning of the trigger into a retractable state is made possible. SOLUTION: The trigger type liquid ejection pump having a mounting cap 4 to be fitted into the mouth neck of a container body 2 actuates a built-in pump mechanism by the manipulation of the trigger 12 oscillatably and pendently disposed in the front part of an injection cylinder to suck up the liquid in the container body and to eject the liquid from an ejection port 10. In such a case, the skirt part 32 covering the front surface and one flank of the trigger is extended from the outer periphery of a cylindrical part 30 fitted to the circumference of the ejection head and on the other hand, the fitting plate part 33 is extended backward from the rear edge of the skit part 32 on the side covering the one flank of the trigger. This fitting plate part 33 is fitted to the recessed part 34 hollowed in the side wall part 9a of the cover 9, by which the trigger 12 is covered with the skirt part 32 and the trigger manipulation is disabled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art As a trigger type liquid ejection pump, for example, a mounting cap fitted to a mouth and neck of a container body, and a cylinder which is fitted and fixed above the cap and which extends from an intermediate portion of a vertical cylinder rising from the upper end of the mounting cap. A pump body that projects the injection cylinder forward from the upper part,
An ejection head fitted to the tip of the injection cylinder, and a trigger vertically suspended from the front of the injection cylinder and linked to the tip of the plunger fitted in the cylinder in a forward biased state so as to be able to be pushed. There is known a configuration in which 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 of the head. In general, in order to prevent liquid leakage due to careless operation of a trigger or mischief during display of a product, the ejection head is attached to a nozzle fitting cylinder provided at the front end of the ejection cylinder. An opening / closing mechanism is provided so as to be rotatable and shut off the communication of the liquid flow path by rotating the ejection head between the two, and to communicate when returning to the original state.

[0003]

However, in the apparatus provided with the above-mentioned opening / closing mechanism, the trigger is locked so as not to be pushed by the hydraulic pressure through the plunger, so that the trigger remains in the liquid flow path closed state. When the trigger is pulled frequently, the plunger can be slightly pushed in, and the high-pressure liquid may accumulate in the front portion of the injection cylinder downstream of the discharge valve due to the abnormally high pressure in the cylinder, passing through the discharge valve. In such a case, when the ejection head is turned to the liquid flow path communication position, the high-pressure liquid accumulated in the front portion of the injection cylinder,
Even if the trigger operation is not performed, there is a problem that the ejection head is disengaged from the nozzle hole due to a problem that the ejection head is ejected from the nozzle hole, or if the trigger is strongly pulled, the pressure in the ejection cylinder becomes high and the ejection head is disengaged from the nozzle fitting cylinder. The present invention has been made in view of the above points, and can reliably prevent a trigger operation when not in use and the like, and can solve the above inconveniences. The present invention proposes an excellent trigger type liquid ejection pump.

[0004]

According to a first aspect of the present invention, there is provided a pump comprising a mounting cap for fitting to a mouth and neck portion of a container, and a vertical cylinder rising from an upper end of the mounting cap. A pump body 8 having a cylinder 6 protruding forward from an intermediate portion and an injection cylinder 7 protruding forward from an upper portion thereof; a cover 9 covering the upper surface, both side surfaces, and a rear surface of the pump body; A jet head 11 having a spout 10 connected thereto and a trigger 12 oscillatingly suspended from the front of the injection cylinder 7 are provided. By operating the trigger, the liquid in the container is sucked up by the action of a built-in pump mechanism. In the trigger type liquid ejection pump configured to eject from the trigger 10, a skirt portion 32 covering the front surface and one side of the trigger is extended from the outer periphery of the cylindrical portion 30 fitted around the ejection head 11, and the trigger Side The locking member A, which is formed by fitting the fitting plate portion 33 extending rearward from the rear edge of the skirt portion to be covered to the concave portion 34 recessed in the side wall portion 9a of the cover, to a state in which the trigger can be retracted. The trigger type liquid ejection pump is characterized by being provided so as to be able to rotate.

The pump according to the second aspect of the present invention includes an opening / closing mechanism configured to open and close the ejection port 10 by rotating the ejection head 11, and the ejection head rotates with the rotation of the locking member A. The trigger type liquid ejection pump according to claim 1, wherein the engagement plate portion 33 is fitted and locked in the concave portion 34 with the ejection port 10 closed.

The pump according to the third aspect of the present invention provides the container
A mounting cap 4 to be fitted to the mouth and neck 3 and a cylinder 6 from an intermediate portion of the vertical cylinder 5 rising from the upper end of the mounting cap,
A pump body 8 having an injection cylinder 7 protruding forward from the upper part thereof, a cover 9 covering the upper surface of the pump body, both side surfaces, and a rear surface, and a tip end of the injection cylinder 7 can be rotated left and right. An ejection head 11 having an ejection port 10 connected to the nozzle and a trigger 12 oscillatingly suspended from the front of the injection cylinder 7 are provided. By operating the trigger, the liquid in the container is sucked up by the action of a built-in pump mechanism. In the trigger-type liquid ejection pump configured to eject from the outlet 10, a skirt portion 32 that covers the front and one side of the trigger is extended from the outer peripheral wall 29 of the ejection head 11, and the side that covers one side of the trigger is provided. Fitting plate 33 extending rearward from the trailing edge of the skirt
Is configured as a trigger-type liquid ejection pump in which a locking member B fitted into a concave portion 34 formed in the side wall portion 9a of the cover is provided so that the trigger can be turned to a retractable state.

The pump according to a fourth aspect of the present invention includes an opening / closing mechanism configured to open and close the ejection port 10 by rotating the ejection head 11, and the fitting plate portion 33 has a concave portion with the ejection port 10 closed. The trigger type liquid ejection pump according to claim 3 is configured so as to be fitted and locked in the inside of the pump.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. The trigger type liquid jet pump 1 of the present invention includes a mounting cap 4 fitted to the mouth and neck 3 of the container body 2, a cylinder 6 from an intermediate portion of a vertical cylinder 5 rising from an upper end of the mounting cap, and an injection cylinder 7 from above. , A cover 9 covering the upper surface, both side surfaces, and a rear surface of the pump body, and an injection cylinder 7.
It has an ejection head 11 with an ejection port 10 connected to the tip, and a trigger 12 oscillatingly suspended from the front of the injection cylinder 7. The operation of the trigger operates the built-in pump mechanism to suck up the liquid in the container. It is provided with a known pump mechanism configured to jet from the jet port 10.

An example of the built-in pump mechanism will be described with reference to the drawings. In addition, a suction valve 15 is provided at a lower portion inside the vertical cylinder 5 and a discharge valve 16 is provided at an upper portion, so that the inside of the vertical tube 5 downstream of the suction valve 15 communicates with the inside of the cylinder 6, and the inside of the vertical cylinder 5 downstream of the discharge valve 16. And the inside of the injection cylinder 7 are communicated. In the figure, reference numeral 17 denotes a pipe. The trigger 12 in the illustrated example is a front plate 12a.
Each side plate 12b is extended rearward from both sides,
The upper end of the cover protrudes upward from the front plate 12a, and both sides of the protruding portion are pivotally attached to the inner surface of the side wall 9a of the cover. Further, the trigger 12 is locked in a state where the lower portion of the pivot portion is urged forward by a coil spring 13 via a plunger 14.

The ejection head 11 in the present embodiment has an opening / closing mechanism that can open and close the ejection port 10 by rotating in the left-right direction. In the illustrated example, the ejection head 11 is rotatably connected to the tip of the injection cylinder 7 via a connection cylinder member 18.
The connecting cylinder member 18 has a rear fitting cylinder 19 closely fitted to the outer peripheral tip of the injection cylinder 7 protruding from the rear surface, and a vertical partition plate on the front surface of the injection cylinder 7.
20 are closely attached to each other, and a large-diameter front fitting cylinder 21 having a different center downward from the front surface of the vertical partition plate 20 is projected from the front surface of the vertical partition plate 20. 22 are protruding. Also,
The inside of the injection cylinder 7 and the inside of the front fitting cylinder 21 are connected through a through hole 23 formed in the vertical partition plate 20.

The ejection head 11 has an external fitting tube 24 rotatably fitted to the outer periphery of the front fitting tube 21 protruding from the peripheral edge of the rear surface of the front plate 25, and an inner protruding portion protruding from the inner periphery thereof. The fitting tube 26 is fitted to the outer periphery of the shaft 22 in a liquid-tight and rotatable manner. And the axial pillar
A concave groove 27 extending in the front-rear direction drilled at the outer peripheral front end of 22;
By communicating with a groove 28 extending in the front-rear direction formed in the inner peripheral tip of the inner fitting cylinder 26, the inside of the injection cylinder 7 and the ejection port 10 are formed.
And a known opening / closing mechanism configured to communicate with. In addition, a triangular cylindrical outer peripheral wall 29 connecting the inner peripheral front part to the outer fitting cylinder 24 outer peripheral front part is extended, and when the upper surface is in a horizontal plane, the ejection port is shut off, and in a 120 ° rotating state. It is configured to be able to squirt. Therefore, in the state of FIG. 1, the ejection port 10 and the inside of the injection cylinder 7 are not in communication.

According to the present invention, in the above-described jet pump, the locking member A is provided for the purpose of preventing inadvertent pulling of the trigger, mischief during display, and the like.
The locking member A includes a cylindrical portion 30 fitted around the ejection head 11.
A skirt portion 32 that covers the front and one side of the trigger extends from a lower portion of the outer periphery, and a fitting plate portion 33 that extends rearward from an upper portion of a rear edge of the skirt that covers the side surface of the trigger.
Is fitted into a concave portion 34 formed in the front of the side wall portion 9a of the cover, and the trigger is provided to be rotatable to a retractable state.

The attachment mechanism of the tubular portion 30 is changed depending on whether the ejection head 11 is rotatable or not. When the ejection head is rotatable, the ejection head 11 needs to be fitted so as not to rotate relative to the ejection head 11 in order to rotate together with the ejection head 11. Can be adopted. When the ejection heads are cylindrical, engagement means that do not rotate with each other may be provided. If the ejection head is not rotatable, it may be rotatably mounted around the ejection head.

In the illustrated example, the front wall 31 is formed in a triangular cylindrical shape fitted to the outer periphery of the outer peripheral wall 29 of the ejection head, and the front wall 31 is extended inward from the front end edge. Have been combined. The skirt portion 32 is mainly for preventing finger catching of the trigger when not in use, and is configured so as not to cover at least one side surface of the trigger so that the locking member A can rotate in one of the left and right directions. ing. The coating on one side of the trigger may be any. In the illustrated example, the portion excluding the left side surface of the trigger is covered.

The fitting plate portion 33 is fitted into the concave portion 34 of the cover to reliably prevent the skirt portion 32 from being pulled rearward and hence the trigger from being pulled in. Further, the locking member A is used after the use. It can be easily rotated and locked in the original state. Further, in the present embodiment, as described above, the opening and closing mechanism configured to open and close the ejection port by the rotation of the ejection head 11 is provided, and the locking member A rotates with the rotation of the ejection head, and The fitting plate 33 is fitted and locked in the recess 34 with the ejection port closed. Therefore, a double lock structure is provided for preventing the trigger 12 from being retracted and for shutting off the ejection port.

To explain the case of using the pump constructed as described above, in the state shown in FIG. 1, the ejection port 10 is shut off, the trigger 12 cannot be pulled in, and the liquid cannot be ejected. When the locking member A is turned upward by about 120 ° from this state, the opening / closing mechanism of the head is opened to open the ejection port 10, and the trigger 12 is exposed so that the trigger 12 can be retracted. Next, by pulling the trigger 12, the liquid in the container can be ejected. After use, the locking member A may be rotated again to the original state.

FIG. 5 shows another embodiment of the present invention.
A skirt portion 32 that covers the front and one side of the trigger extends from a lower portion of the outer peripheral wall 29 of the ejection head 11 and a fitting plate portion 33 that extends rearward from the rear edge of the skirt portion that covers one side of the trigger. , A recess formed in the side wall 9a of the cover
A locking member B fitted to 34 is provided so that the trigger can be turned to a retractable state. Other structures are the same as those of the above-described embodiment, and the same reference numerals are given and the description is omitted. Each of the above members is mainly formed of a synthetic resin,
If necessary, an elastomer, a metal, or the like can be used in combination.

[0018]

As described above, the jet pump according to the present invention has the following features.
By adopting the above-described configuration, when not in use, the locking member can reliably prevent the trigger from being pulled in, prevent an abnormally high pressure in the pump, prevent inadvertent liquid leakage, and provide a jet head. There is no inconvenience, such as departure. Further, in use, the liquid can be ejected only by rotating the locking member, and the handling is extremely convenient. Moreover, the locking member can be formed as an integral molded product of a synthetic resin, and the mounting thereof can be simply performed by fitting from the front to a conventional pump of this type having a recess formed thereon, and can be formed easily and inexpensively. It has advantages.

In the jet pump according to the second aspect of the present invention, double locking can be performed to prevent the trigger from being retracted and to shut off the jet port, so that the leakage of the liquid can be more reliably prevented, and the locking members can be locked. There is also convenience that can be performed uniformly by rotating.

Further, in the ejection pump according to the third aspect, similarly to the pump according to the first aspect of the present invention, when not in use, the locking member can reliably prevent the trigger from being pulled in, and abnormally high pressure in the pump can be prevented. It can prevent inadvertent leakage of the liquid, and does not cause inconvenience such as the ejection head coming off. Further, in use, the liquid can be ejected only by rotating the locking member, and the handling is extremely convenient. In addition, there is also the convenience that the locking member can be formed as an integrally molded product of a synthetic resin including the ejection head.

Further, in the jet pump according to the fourth aspect, the pump according to the third aspect has a double lock for preventing the trigger from being pulled in and shutting off the jet port, similarly to the pump according to the second aspect. They can be performed uniformly by rotating the locking member.

[Brief description of the drawings]

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

FIG. 2 is a front view of the embodiment.

FIG. 3 is a perspective view of the embodiment.

FIG. 4 is a perspective view illustrating a trigger retractable state of the embodiment.

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

[Explanation of symbols]

2 ... container body, 3 ... mouth and neck, 4 ... mounting cap, 5 ... vertical cylinder, 6 ... cylinder, 7 ... injection cylinder, 8 ... pump body, 9 ...
Cover, 10 ... spout, 11 ... spout head, 12 ... trigger,
30 ... cylindrical part, 32 ... skirt part, 33 ... fitting plate part, 34 ... concave part, A, B ... locking member

Claims (4)

[Claims] 1. A mounting cap 4 fitted to the mouth and neck portion 3 of a container body 2, a cylinder 6 is protruded forward from an intermediate portion of a vertical cylinder 5 rising from the upper end of the mounting cap, and an injection cylinder 7 is protruded from the upper part. Pump body 8, a cover 9 covering the upper surface, both side surfaces, and the rear surface of the pump body, an ejection head 11 with an ejection port 10 connected to the tip of the injection cylinder 7, With a trigger 12 that is movably suspended,
In the trigger type liquid ejection pump configured to suck up the liquid in the container by the operation of the trigger by the operation of the built-in pump mechanism and eject the liquid from the ejection port 10, the outer periphery of the cylindrical portion 30 fitted around the ejection head 11 A skirt portion 32 that covers the front surface and one side surface of the trigger is extended, and a fitting plate portion 33 that extends rearward from a rear edge of the skirt portion that covers one side surface of the trigger is recessed in the side wall portion 9a of the cover. A trigger type liquid ejection pump characterized in that a locking member A fitted to the recessed portion 34 is provided so as to be rotatable to a retractable state of the trigger. An opening / closing mechanism configured to open and close the ejection port by rotating the ejection head, wherein the ejection head rotates with the rotation of the locking member, and
2. The trigger type liquid jet pump according to claim 1, wherein the fitting plate portion 33 is fitted and locked in the concave portion 34 in a closed state. 3. A mounting cap 4 fitted to the mouth and neck portion 3 of the container body 2, a cylinder 6 protruding from an intermediate portion of a vertical cylinder 5 rising from the upper end of the mounting cap, and an injection cylinder 7 protruding forward from the upper portion. And a cover 9 covering the upper surface, both side surfaces, and the rear surface of the pump body, and an ejection head 11 having an ejection port 10 connected to the tip of the injection cylinder 7 so as to be rotatable in the left-right direction. A trigger 12 which is provided so as to oscillate vertically from the front of the injection cylinder 7, 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 outlet 10. In the pump, a skirt portion 32 covering the front surface and one side surface of the trigger extends from the outer peripheral wall 29 of the ejection head 11 and a fitting extending rearward from a rear edge of the skirt portion covering one side surface of the trigger. Plywood part 33 A recess formed in the side wall 9a of the bar
A trigger type liquid ejection pump in which a locking member B fitted to 34 is provided so that the trigger can be turned to a retractable state. 4. An opening / closing mechanism configured to open and close the ejection port 10 by rotating the ejection head 11.
4. The trigger type liquid ejection pump according to claim 3, wherein the fitting plate portion 33 is fitted and locked in the concave portion 34 with the 10 closed.