JP3883175B2 - Trigger type liquid ejector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a trigger type liquid ejector.
[0002]
[Prior art]
For example, as disclosed in Japanese Patent Application Laid-Open No. 2000-157897, the cylinder protrudes from the front of the vertical cylinder and the injection cylinder protrudes from the upper end, respectively, and the upper and left and right side surfaces of the vertical cylinder and the injection cylinder and the cylinder base A body body that covers the left and right side surfaces with a cover and extends the rear part of the cover to the rear of the vertical cylinder;
A plunger that urges and fits the rear end portion into the cylinder and projects the front portion forward of the cylinder;
A trigger that pivotally attaches an upper end to the front of the injection cylinder and protrudes downward and forward, and engages the front end of the plunger with the upper rear surface;
From the lower surface of the body main body, the large-diameter base cylinder portion is passed through the top wall of the large-diameter base cylinder portion, and is passed through the top wall of the large-diameter base cylinder portion into the connecting cylinder that hangs around the lower end of the vertical cylinder An intake into which each liquid pipe is fitted,
The inward flange attached to the upper end of the fitting cylinder for fitting to the outer surface of the container neck of the container body is engaged with the upper surface of the outer peripheral portion of the outward flange protruding from the lower portion of the large-diameter base cylinder portion that hangs downward from the connecting cylinder. Synthetic-resin-made trigger type liquid ejectors whose main members are a mounting cylinder member are widely used.
[0003]
[Problems to be solved by the invention]
The trigger type liquid ejector increases the pressure in the cylinder and the injection cylinder by retreating and advancing the plunger by pulling backward and releasing the lower part of the trigger, and the liquid in the cylinder is fitted to the front end of the injection cylinder. The liquid in the container, which is ejected from the nozzle cylinder and has a negative pressure inside the cylinder and fitted with the mounting cylinder, can be sucked into the cylinder via a suction pipe suspended from the lower end of the intake.
[0004]
The ejector has been sold in the state of being attached to the container body, and was discarded together with the container body when the liquid in the container disappeared. Recently, when the liquid in the container disappears, the liquid is refilled into the container body. In many cases, the ejector is reused. Since the ejector is formed by assembling a plurality of synthetic resin members, when the number of trigger operations increases due to reuse as described above, the body body rises with respect to the intake, causing liquid leakage and other various problems. It turned out to come with the drawbacks.
[0005]
This is probably because the body and intake are both made of a synthetic resin that has elasticity, and the liquid feed pipe and vertical cylinder have a small diameter in their function, while the plunger is retracted by pulling the trigger. In this case, since the force that the injection cylinder pulls forward in the upper part of the vertical cylinder and the liquid supply pipe is large, the liquid supply pipe and the vertical cylinder are slightly bent forward and elastically restored when the trigger is released. This is considered to be due to the fact that the vertical cylinder is pulled up little by little to the extent that the pipe cannot be measured with respect to the liquid feeding pipe.
[0006]
The above disadvantage can be eliminated by increasing the overall thickness of the intake and increasing the overall rigidity. However, the present invention makes the protrusion used to align the body body and the intake longer and also serves as a connecting rod. It aims at removing the said fault easily.
[0007]
[Means for Solving the Problems]
As a first means, the cylinder 4 protrudes from the front of the vertical cylinder 3 and the injection cylinder 5 protrudes from the upper end, respectively, and the upper and left and right side surfaces of the vertical cylinder and the injection cylinder and the left and right side surfaces of the cylinder base And body body 2 covering each other with cover 6;
A plunger 11 for fitting the rear end portion into the cylinder and projecting the front portion forward of the cylinder;
A trigger 21 having an upper end pivotally attached to the front of the injection cylinder and projecting downward and forward, and the plunger front end engaged with the upper rear surface;
From the lower surface of the body main body, into the fitting cylinder 9 that hangs by surrounding the lower end of the vertical cylinder 3, the large-diameter base cylinder part 32 and the vertical wall 3, the top wall 33 of the large-diameter base cylinder part Intakes 31 fitted with liquid feed pipes 34 penetrating and standing up,
An inward flange 53 attached to the upper end of the fitting cylinder 52 on the outer surface of the container neck of the container body is engaged with the upper surface of the outer flange 41 protruding from the large-diameter base cylinder portion hanging downward from the fitting cylinder 9. In the trigger type liquid ejector made of synthetic resin whose main member is the combined mounting cylinder 51,
Between the left and right outer surfaces of the vertical cylinder 3 and the right and left side walls of the cover, vertical holes 61, 61 are formed with the lower surface opening and the upper surface is closed. The connecting rods 62 and 62 for positioning and positioning with respect to the body main body, which are erected from the upper surface of the top wall of the portion 32 and have a length of approximately one third or more of the distance from the upper surface of the top wall to the upper end of the liquid feeding pipe It is characterized by being fitted.
[0008]
As a second means, both the front and rear surfaces 63 and 64 of the connecting rods 62 and 62 are brought into surface contact with both the front and rear of the vertical holes 61 and 61 as well as the first means.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Referring to the drawings, reference numeral 1 denotes an entire trigger type liquid ejector. As in the prior art, the ejector includes main body 2, plunger 11, trigger 21, intake 31, and mounting cylinder 51 as main members. The feature of the present invention resides in the method of connecting the intake 31 and the body main body 2, and the other parts are the same as in the prior art.
[0010]
The body body 2 protrudes forward from the front surface of the vertical cylinder 3 and the injection cylinder 5 from the upper end, respectively, and the upper and left and right side surfaces of the vertical cylinder and the injection cylinder and the left and right side surfaces of the cylinder base. Are covered with a cover 6 and the rear part of the cover is extended rearward of the vertical cylinder 3. A connecting cylinder 7 is fitted in front of the injection cylinder 5, and a nozzle cylinder 8 is fitted in the front of the connecting cylinder.
[0011]
The plunger 11 is biased forward into the cylinder so as to fit the rear portion 12 and the front portion 13 protrudes forward of the cylinder 4.
[0012]
The trigger 21 has an upper end pivotally attached to the front part of the injection cylinder 5 and protrudes downward and forward, and a plunger front end is engaged with a rear end of a protrusion 22 attached to the rear surface of the trigger upper part.
[0013]
The intake 31 has a large-diameter base tube portion 32 in the fitting tube 9 that hangs from the lower surface of the body body so as to surround the lower end of the vertical tube 3, and a top wall 33 of the large-diameter base tube portion into the vertical tube 3. The liquid feeding pipes 34 that stand up through the pipes are respectively fitted.
[0014]
A suction valve 35 is provided in the middle and slightly below the liquid feed pipe 34, and a suction pipe 36 that hangs down into the container body is suspended in the lower part of the liquid feed pipe. In addition, a discharge valve member 37 is provided in the upper part of the liquid supply pipe, and through holes 38 and 39 are formed in the liquid supply pipe and the vertical cylinder part at the front part of the middle, slightly above the upper part. And communicate with each other. A through hole 40 communicating with the inside of the injection cylinder is also formed in the upper front surface of the liquid feeding pipe 34.
[0015]
The fitting cylinder 51 is a fitting provided so as to be fitted to the outer surface of the outer peripheral portion of the outward flange 41 attached to the outer surface of the large-diameter base cylinder part 32 hanging downward from the fitting cylinder 9. An inward flange 53 attached to the upper end of the cylinder 52 is engaged.
[0016]
Each of the above members is made of a synthetic resin material.
[0017]
The trigger type liquid ejector configured as described above is configured such that the mounting cylinder 51 is fitted to the outer surface of the neck of the container body, and the liquid in the container is drawn through the suction valve 35 by the retraction and advancement of the plunger 11 by the operation of the trigger 21. 4 and can be ejected from the nozzle cylinder 8 at the front end of the injection cylinder 5 via a discharge valve formed by a discharge valve member.
[0018]
In the present invention, as shown in FIG. 2, between the left and right outer surfaces of the above-described vertical cylinder 3 and the left and right side walls of the cover, vertical holes 61, 61 that are closed at the upper surface are formed by opening the lower surface. Elevated from the top of the top wall of the large-diameter base cylinder portion on the left and right sides of the liquid feed pipe 34 into the equal vertical holes, and has a length that is approximately one-half of the distance from the top of the top wall to the top of the liquid feed pipe. The connecting rods 62 and 62 were closely fitted. The length of the connecting rod needs to be long to some extent. Conventionally, the position having a length that is almost one tenth of the distance from the top surface of the top wall of the large-diameter base tube to the top of the liquid supply pipe. The alignment protrusion is erected from the top surface of the top wall, but such a protrusion has no effect of preventing the intake from coming out, and requires at least about one third of the above distance. Each connecting rod has a considerable strength, and at least in the front-rear direction, it cannot be bent.
[0019]
As shown in FIG. 3, the vertical holes 61, 61 may have gaps formed on the left and right sides of the connecting rods 62, 62, but the front and rear surfaces 63, 64 of the connecting rod are brought into surface contact with the front and rear surfaces of the vertical holes 61, 61.
[0020]
【The invention's effect】
The present invention is configured as described above, and when formed as in claim 1, the connecting rods 62 and 62 are reinforced to prevent bending of the liquid feeding pipe 34 and the vertical cylinder 3 when the trigger is pulled. Therefore, it is possible to prevent the body body from being lifted with respect to the intake 31. Further, the connecting rods 62 and 62 can be easily formed because it is only necessary to extend the conventional positioning protrusion long upward.
[0021]
By making it like Claim 2, the said prevention of a lift can be made still more reliable.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a trigger type liquid ejector according to the present invention.
FIG. 2 is a longitudinal sectional view in a direction orthogonal to FIG.
FIG. 3 is an enlarged cross-sectional view of the main part of FIG.
FIG. 4 is a side view of a main member.
FIG. 5 is a plan view of the member in FIG. 4;
[Explanation of symbols]
2 ... Body 11 ... Plunger
21 ... Trigger 31 ... Intake
32 ... Large diameter base tube 62 ... Connecting rod

Claims (2)

The cylinder 4 protrudes from the front of the vertical cylinder 3 and the injection cylinder 5 protrudes from the upper end, and the upper and left and right side surfaces of the vertical cylinder and the injection cylinder and the left and right side surfaces of the cylinder base are covered with the cover 6. Body body 2 to be combined,
A plunger 11 for fitting the rear end portion into the cylinder and projecting the front portion forward of the cylinder;
A trigger 21 having an upper end pivotally attached to the front of the injection cylinder and projecting downward and forward, and the plunger front end engaged with the upper rear surface;
From the lower surface of the body main body, into the fitting cylinder 9 that hangs by surrounding the lower end of the vertical cylinder 3, the large-diameter base cylinder part 32 and the vertical wall 3, the top wall 33 of the large-diameter base cylinder part Intakes 31 fitted with liquid feed pipes 34 penetrating and standing up,
An inward flange 53 attached to the upper end of the fitting cylinder 52 on the outer surface of the container neck of the container body is engaged with the upper surface of the outer flange 41 protruding from the large-diameter base cylinder portion hanging downward from the fitting cylinder 9. In the trigger type liquid ejector made of synthetic resin whose main member is the combined mounting cylinder 51,
Between the left and right outer surfaces of the vertical cylinder 3 and the right and left side walls of the cover, vertical holes 61, 61 are formed with the lower surface opening and the upper surface is closed. The connecting rods 62 and 62 for positioning and positioning with respect to the body main body, which are erected from the upper surface of the top wall of the portion 32 and have a length of approximately one third or more of the distance from the upper surface of the top wall to the upper end of the liquid feeding pipe A trigger type liquid ejector characterized by being fitted. The trigger type liquid ejector according to claim 1, wherein the front and rear surfaces 63, 64 of the connecting rod 62, 62 are brought into surface contact with both the front and rear of the vertical holes 61, 61.

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