JP5859194B2 - Trigger type liquid ejector - Google Patents

Description

  The present invention relates to a trigger type liquid ejector that ejects liquid by performing an operation of pulling (checking) an operation lever serving as a trigger.

The trigger type liquid ejector is widely used in many fields because the liquid in the container can be ejected uniformly only by being attached to the mouth of the container in which the contents (liquid) are stored. Conventionally, various types of trigger type liquid ejectors have been proposed.
For example, in the trigger-type liquid ejector disclosed in Patent Document 1, the operation is performed by hooking a finger on an L-shaped operation lever (hereinafter simply referred to as an operation lever) serving as a trigger and pulling it toward the front from the nozzle. Liquid can be ejected.
More specifically, this trigger type liquid ejector has an injection cylinder having a nozzle provided at the tip, and the lower side of the injection cylinder is fixed in a form in which a straight pipe-shaped stem is suspended. . The lower end of the stem is connected to a piston that forms a pump mechanism, and the liquid in the container can be sucked into the cylinder and pressurized, and the pressurized liquid passes through the stem. Then, it is supplied to the nozzle at the tip of the injection cylinder.
Therefore, when the member with the trigger is pulled toward the front, the operation lever swings downward about the pin (the pivot shaft) set on the support plate. Based on this swinging motion, the stem below the operating lever is lowered. The cylinder is pressurized by the lowering of the stem, whereby the liquid in the cylinder is ejected from the nozzle through the stem.

JP 2002-11392 A

By the way, in the conventional trigger type liquid ejector described above, an injection cylinder is integrally formed on the stem. For this reason, when the stem is lowered by pulling the operating lever toward the front in order to eject the liquid, the upper injection cylinder is lowered accordingly. Since the nozzle is provided at the tip of the injection cylinder, the position of the nozzle moves up and down according to the injection cylinder. In this way, even if the position of the nozzle moves up and down, there is no problem as long as the drug is intended to spray the liquid to be ejected over a wide range.
However, depending on the liquid to be ejected, that is, the contents stored in the container, there is a demand to eject the liquid toward an accurate position. For example, there is a case where the liquid is a cosmetic essence and it is desired to spray precisely on a narrow area such as a fingertip. In such a case, if the position of the nozzle fluctuates in accordance with the ejection operation, there is a disadvantage that the liquid adheres to a place deviated from the place intended by the operator.

Therefore, an object of the present invention is to propose a trigger type liquid ejector that can reliably eject liquid to an intended position without changing the position of the nozzle when the operation lever is operated for ejection. .
In addition, the nozzle in this invention should just be equipped with the discharge port which ejects the liquid (contents) in a container to the external world with ejection operation | movement, The state of the liquid to eject does not need to be specifically limited. That is, the nozzle of the present invention may be ejected in any form, such as a liquid sprayed in a mist form, a liquid sprayed in a liquid drop form, or a liquid columnar linear spray. It is.

An object of the present invention is an ejector that is attached to the mouth of a container and ejects the liquid in the container, and has a lower end for a nozzle that ejects the liquid and a pump mechanism that supplies the suctioned and pressurized liquid A stem member which is connected to the nozzle and has an upper end connected to the nozzle so that the liquid can flow therethrough and which can be moved up and down with respect to a base attached to the mouth of the container; A trigger-type liquid ejector having an operation lever that is pivotable about a pivot shaft provided on a support column that is erected on the part and moves the stem member by a pulling operation;
The stem member is arranged so as to cover the stem member from above, the lower end side opening side is connected to the stem member and is engaged with the operation lever, and the stem member is based on the pulling operation of the operation lever. Further provided with a cylindrical connecting member that imparts a pressing force to the stem member and can be raised together with the stem member,
The nozzle is positioned and fixed to a support frame fixed to the base portion,
And the nozzle and the connecting member, Ri Thea connected by pipe with the elastic to circulate the liquid,
The operation lever is formed in a hollow with an opening upward, and is mounted so as to cover the support frame so that a portion including the nozzle protrudes from the opening,
The connection member is disposed inside the support frame, and the engagement protrusions provided on both side portions of the connection member are disposed so as to be vertically movable in a pair of cutout portions formed on both side walls of the support frame,
Receiving portion of the operating lever, the notch that has engaged with the engaging projection of the connecting member which projects toward the outside of the support frame via a, by a trigger-type liquid ejector, characterized in that Achieved.

  Further, it is preferable that an engagement means for engaging each other is provided in the region of the support frame where the nozzle is fixed and the nozzle.

  In addition, a space for allowing movement of the pipe whose position and posture change with the operation of the operation lever is set inside the support frame, and the initial position of the operation lever before the pulling operation is set. It is preferable to set a length play on the pipe.

  The pipe may be a tube having elasticity selected from a rubber material and a synthetic resin material.

  ADVANTAGE OF THE INVENTION According to this invention, the trigger type liquid ejector which can eject a liquid reliably to the intended position can be provided. When the trigger type liquid ejector according to the present invention is used, liquids such as cosmetics and medicines can be ejected at accurate positions, so that a certain effect can be expected.

It is the perspective view which showed the external appearance after assembling about the trigger type liquid ejector which concerns on this invention. It is the perspective view which disassembled and showed the main structure of the trigger type liquid ejector of FIG. It is the figure which showed typically a mode that the operation lever of a trigger type liquid ejector exists in an initial position. It is the figure which showed typically a mode that it exists in the position after pulling-in operation of the operation lever of a trigger type liquid ejector. It is the figure which showed the other example of engagement which can be employ | adopted when fixing a nozzle to a support frame.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an external appearance after assembly of a trigger type liquid ejector according to the present invention, and FIG. 2 is a perspective view showing the main configuration of the trigger type liquid ejector in an exploded manner so as to be confirmed.
The trigger type liquid ejector 1 is attached to the mouth portion of the container BT and is used when the liquid stored in the container BT is ejected. A base portion 2 serving as a base portion of the ejector is provided below the trigger type liquid ejector 1. The base portion 2 has a space that opens to the lower side, and a screw portion that is threadedly engaged with, for example, a screw portion provided in a mouth portion on the container BT side is formed on the inner peripheral wall surface thereof. It can be installed.

  A support frame 4 on which a nozzle 5 described later is positioned is fixed on the base portion 2. A pump mechanism 3 for sucking up the liquid in the container BT and supplying it to the nozzle 5 is provided inside the base portion 2. Here, illustration of a detailed structure in the pump mechanism 3 is omitted, but the pump mechanism 3 is, for example, a cylinder chamber, a piston that moves inside the cylinder chamber, and a reverse operation that operates so that the liquid flows toward the nozzle 5 side. It is set as the structure equipped with the stop valve. What is necessary is just to select and employ | adopt suitably what has been proposed conventionally as such a pump mechanism. 1 and 2 show the suction pipe 6 that is suspended from the lower end of the pump mechanism 3 and inserted into the liquid in the container BT.

As shown in FIG. 2, an opening 2a is formed on the upper surface of the base portion 2, and a space SP extending downward from the opening 2a extends to the above-described pump mechanism 3 located on the lower side. Yes. A member that rises at the center of the opening 2a is a stem member 3pl extending from the pump mechanism 3 side. Then, the connection member 10 is inserted into the space SP of the opening 2a. Therefore, the lower end side opening 10a side of the connection member 10 is connected to the stem member 3pl. The connecting member 10 is connected to the stem member 3pl so as to be slidable up and down, and engages with an operation lever described later, and applies a pressing force to the stem member 3pl based on a pulling operation of the operation lever. Further, the connecting member 10 is a cylindrical member capable of flowing liquid that can rise together with the stem member 3pl. In the example shown here, the connecting member 10 is disposed so as to cover the stem member 3pl from above, and is connected to be slidable up and down. And the other upper end side opening 10b of the connection member 10 is connected to the nozzle 5 side.
The stem member 3pl is substantially the same as the hard pipe member employed in the conventional trigger type liquid ejector, and is arranged to be movable up and down with respect to the base portion 2. The point connected with the connection member 10 is different from the conventional one.

Incidentally, the upper end side opening 10 b of the connecting member 10 shown in FIG. 2 is not directly fixedly connected to the nozzle 5. That is, the nozzle 5 and the upper end side opening 10b of the connection member 10 are connected via the pipe 20 having elasticity (flexibility) for circulating the liquid.
Such a pipe 20 is not particularly limited as long as it is a tube that can smoothly circulate liquid and has flexibility. For example, a tube that is appropriately stretched and deformed when a pulling force is applied, and is bent flexibly when a pushing force is applied, is preferably selected from a rubber material and a synthetic resin material. What is necessary is just to choose from the tube provided with the made elasticity.

Furthermore, another structure is demonstrated based on FIG.
The support frame 4 fixed on the base portion 2 is a support body for positioning and fixing the nozzle 5. The support frame 4 includes a base portion 4a disposed so as to cover the upper portion of the base portion 2, a nozzle fixing structure portion 4b provided on the base portion 4a with a space therein, and an opening on the nozzle fixing structure portion 4b. An upper lid member 4rf for closing the portion 4hl is provided.

  And in the area | region (predetermined position) to which the nozzle 5 is fixed in the front end side of the nozzle fixing | fixed structure part 4b, the convex part 4pr mutually engaged with the recessed part 5a provided in the nozzle 5 side is provided, These are these. Engaging means for reliable positioning are configured. When the nozzle 5 is fixed to the nozzle fixing structure portion 4b, the nozzle 5 is reliably positioned on the nozzle fixing structure portion 4b by inserting the concave portion 5a of the nozzle 5 and the convex portion 4pr on the receiving side from above while aligning them. it can. In addition, the engagement method for positioning and fixing the nozzle 5 described here to the nozzle fixing structure portion 4b is an example, and is not limited thereto, and various conventionally known engagement methods can be appropriately employed. .

  In the structure exemplified here, as a more preferable structure, a long groove (rail) structure 4ra-2 is also provided on the upper lid member 4rf side in accordance with the long groove (rail) structure 4ra-1 provided in the opening 4hl. Thereby, the upper cover member 4rf can be slid to close the opening 4hl. It is preferable that the upper lid member 4rf in the closed position is designed so as to abut on the nozzle 5 on its lower surface or to slightly press it. Thereby, the nozzle 5 can be simply and more reliably positioned and fixed.

Further, a pair of opposed notches 4gr, 4gr are formed on both side walls 4wr, 4wr of the nozzle fixing structure 4b. The notch 4gr is provided to obtain a space that allows the engaging protrusions 10pr and 10pr provided on both sides of the connecting member 10 to move up and down.
The lower side of the connection member 10 in which the nozzle 5 is connected to the upper end side opening 10 b via the pipe 20 is set in the space SP of the base portion 2. Next, the support frame 4 is set on the base portion 2 so as to cover it. At this time, as described above, the nozzle 5 is positioned and fixed at a fixed position of the nozzle fixing structure 4b. At the same time, the connecting member 10 is set so that the engaging protrusions 10pr and 10pr are accommodated in the notches 4gr and 4gr, respectively.

Further, the operation lever 30 is set so as to be rotatable around a projection 7pr provided on the support column 7 standing on the base 2 as a pivot. More specifically, a recess 31 for receiving the protrusion 7pr is formed on the operation lever 30 side.
The operation lever 30 is hollow, and an opening 32 is formed above it. While covering the support frame 4 fixed on the base portion 2, the portion including the nozzle 5 on the tip side from the opening 32 is mounted so as to make a face (see FIG. 1).
The operating lever 30 is engaged with the engaging protrusion 10pr of the connecting member 10 protruding outward through the notch 4gr and the receiving portion 33 to be engaged. Therefore, when the operation lever 30 is pulled, the connection member 10 can be moved accordingly, so that the stem member 3pl can be moved via the connection member 10. Note that the operation lever 30 can be repeatedly ejected by presetting an urging force that resists the operation of pulling the operation lever 30 (acts so as to push back the operation lever 30). Such an urging force can be obtained by providing a spring member or the like that pushes the stem member 3pl upward in the pump mechanism 3 described above.

A state when the trigger type liquid ejector 1 having the above configuration is operated will be further described with reference to FIGS.
FIG. 3 schematically shows a state where the operation lever 30 of the trigger type liquid ejector 1 is in the initial position before the ejection operation, and FIG. 4 shows the operation lever 30 of the trigger type liquid ejector 1 after the ejection operation. It is the figure which showed typically a mode that it exists in the position after drawing operation.
As apparent from FIGS. 3 and 4, in the trigger type liquid ejector 1, the nozzle 5 for ejecting the liquid is positioned and fixed to the support frame 4 which is a fixed structure on the base portion 2. Therefore, when the operation lever 30 is operated, even if a distance change (position shift) occurs between the positions of the nozzle 5 and the connection member 10, the position of the nozzle 5 does not change. Thereby, according to the trigger type liquid ejector 1, the liquid can be reliably ejected to the intended narrow position.

  Even if the connecting member 10 moves up and down in the trigger type liquid ejector 1 similarly to the conventional trigger type liquid ejector, the position of the nozzle 5 can be fixed between the nozzle 5 and the connecting member 10. This is because the pipes 20 are connected. That is, a change in the distance between the nozzle 5 and the connecting member 10 that occurs when the operation lever 30 is operated is handled (absorbed) by a change in the position and posture of the pipe 20. Therefore, it is preferable to design the space EM so as to allow the movement of the pipe 20 whose posture and position change in this way. By securing the space EM that allows the movement of the pipe 20, it is possible to prevent an excessive force from acting on the pipe 20 even if the posture or position changes. Thereby, durability can also be improved.

Then, at the position after the pulling operation (FIG. 4), the length of the pipe 20 is set to the so-called “play” when the operation lever is at the initial position (FIG. 3) so as not to generate a pulling force on the pipe 20. "Is preferable.
FIG. 3 illustrates a portion EP that bulges outward due to this “play” at the bent portion of the pipe 20. This play (extra length) can be set on the basis that the pipe 20 is not distorted by the pulling force at the position after the pulling operation shown in FIG. Further, if a change occurs such that the inner diameter (D) of the pipe 20 becomes narrow at the position after the pulling operation, stable liquid ejection will be affected. Therefore, the play may be set on the basis of, for example, that the inner diameter (D) of the pipe 20 is not changed and narrowed at the position after the drawing operation shown in FIG.

Further, FIG. 5 is a view showing another example of engagement that can be adopted when the nozzle 5 is fixed to the nozzle fixing structure 4b of the support frame 4. FIG. In FIG. 2, the concave portion 5a provided on the nozzle 5 side and the convex portion 4pr on the nozzle fixing structure portion 4b side are provided, and the upper lid member 4rf is preferably closed.
In the example shown in FIG. 5, the nozzle 5 protrudes outward on both side surfaces. And the notch hole 4an which receives the engagement protrusion 5pr and fits is provided in the nozzle fixing structure part 4b side. With such a structure, the nozzle 5 can be reliably fixed at a predetermined position on the support frame 4 by a simple operation of fitting the engagement protrusion 5pr into the notch hole 4an.
The engagement relationship between the engagement protrusion 5pr and the notch hole 4an is not limited to this example. The engagement is provided with a recess on the nozzle 5 side and a protrusion corresponding to the nozzle fixing structure 4b side. It is also good.

  ADVANTAGE OF THE INVENTION According to this invention, the trigger type liquid ejector which can eject a liquid reliably to the intended position can be provided. Thereby, liquids, such as cosmetics and a medicine, can be accurately ejected to the expected position, and a reliable effect can be obtained.

DESCRIPTION OF SYMBOLS 1 Trigger type liquid ejector 2 Base part 3 Pump mechanism 3pl Stem member 4 Support frame 4rf Upper lid member 4pr Convex part (engagement means)
4hl opening 5 nozzle 5a recess (engagement means)
10 connecting member 10b upper end side opening 20 pipe 30 operation lever BT container

Claims (4)

An ejector that is attached to the mouth of the container to eject the liquid in the container;
The lower end side is connected to the nozzle that ejects the liquid and the pump mechanism that supplies the suctioned and pressurized liquid, and the upper end side is connected to the nozzle so that the liquid can flow and is attached to the mouth of the container A stem member disposed so as to be movable up and down with respect to the base portion, and a pivot member provided on a support column erected on the base portion. A trigger type liquid ejector having an operating lever to be moved;
The stem member is arranged so as to cover the stem member from above, the lower end side opening side is connected to the stem member and is engaged with the operation lever, and the stem member is based on the pulling operation of the operation lever. Further provided with a cylindrical connecting member that imparts a pressing force to the stem member and can be raised together with the stem member,
The nozzle is positioned and fixed to a support frame fixed to the base portion,
And the nozzle and the connecting member, Ri Thea connected by pipe with the elastic to circulate the liquid,
The operation lever is formed in a hollow with an opening upward, and is mounted so as to cover the support frame so that a portion including the nozzle protrudes from the opening,
The connection member is disposed inside the support frame, and the engagement protrusions provided on both side portions of the connection member are disposed so as to be vertically movable in a pair of cutout portions formed on both side walls of the support frame,
The receiving portion of the operating lever, the notch that has engaged with the engaging projection of the connecting member which projects toward the outside of the support frame via a trigger type liquid sprayer, characterized in that.   The trigger type liquid ejector according to claim 1, wherein an engagement means that engages with each other is provided in a region where the nozzle of the support frame is fixed and the nozzle.   A space allowing movement of the pipe whose position and posture change with the operation of the operation lever is set inside the support frame, and the pipe is set at the initial position of the operation lever before the pulling operation. 3. The trigger type liquid ejector according to claim 1, wherein play of length is set.   The trigger type liquid ejector according to any one of claims 1 to 3, wherein the pipe is a tube having elasticity selected from a rubber material and a synthetic resin material.

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