JP2012091145A - Trigger type liquid ejector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trigger type liquid ejector which can eject liquid to an exact position and can change an ejection angle in a vertical direction.SOLUTION: The trigger type liquid ejector 1 has a nozzle 5, a stem member 3pl of which the lower end is connected to a pump mechanism 3 and the upper end is connected to the nozzle 5, and in which the liquid flows, and which is vertically movable to a base 2 mounted to a container mouth, and an operating lever 30 which is rotatable around a pivot shaft of a support structure on the base 2 and moves the stem member 3pl by pulling operation, is further provided with a cylindrical connecting member 10 which imparts a push-down force to the stem member 3pl based on the pulling operation of the operating lever 30 and can move upward together with the stem member 3pl, and has a rotation means which rotatably and pivotally supports the nozzle 5 at a fixed position of a support frame 4 fixed to the base 2 and can change the ejection angle in the vertical direction. The nozzle 5 and the connecting member 10 are connected by a pipe 20.

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.

  The trigger type liquid ejector has a fixed nozzle ejection direction with respect to the container body. However, depending on the liquid to be ejected, it may be desired to spray by changing the ejection angle in the vertical direction. In this case, if the ejection direction is fixed, the operator moves the wrist or the like to cope with it, so there is a concern about the burden on the operator.

Therefore, an object of the present invention is to make it possible to reliably eject liquid to an intended position without changing the position of the nozzle when the operation lever is operated for ejection, and further, a trigger whose ejection angle is variable in the vertical direction. A liquid ejector is proposed.
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 in a support structure that is erected on the part and moves the stem member by a pulling operation;
In a fixed position of the support frame fixed to the base portion, the nozzle is pivotally supported so as to be rotatable, and the ejection angle in the vertical direction can be changed.
A cylinder that is slidably connected to the stem member and is engaged with the operation lever, and a pressing force is applied to the stem member based on a pulling operation of the operation lever, and the cylinder can be raised together with the stem member A connecting member in the shape of
The nozzle and the connecting member are achieved by a trigger type liquid ejector characterized in that the nozzle and the connecting member are connected by a pipe having elasticity that allows the liquid to flow therethrough.

  Moreover, it is preferable that the said rotation means further includes the positioning means which keeps the ejection angle of the said nozzle to predetermined.

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

  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, while being able to eject a liquid reliably to the intended position, if necessary, the easy-to-use trigger type liquid ejector which can also change an ejection angle in an up-down direction can be provided.

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 mode when a nozzle was rotated with a trigger type liquid ejector. It is the figure shown about an example of the positioning means which can be employ | adopted when rotating a nozzle.

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 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 is 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.

Further, a structure for supporting the nozzle 5 provided in the trigger type liquid ejector 1 and a structure capable of changing the ejection angle in the vertical direction will be described with reference to FIGS.
On the base portion 2, an engagement base 7 serving as a support structure is erected at a position offset from the axis CL, and the support frame 4 is fixed on the engagement base 7. The support frame 4 is a support body that supports the nozzle 5. Here, the fixed base 7tp provided on the engagement base 7 and the bottom fitting portion 4dw provided on the bottom side of the support frame 4 are undercut fitted, and the support frame 4 is positioned and fixed on the engagement base 7. The case is shown as an example.

In the support frame 4, both side walls 4wr and 4wr are arranged to face each other, and a space is formed therebetween. A pipe 20 that connects the nozzle 5 and the connecting member 10 is accommodated in this space.
More specifically, an opening 4 hl for receiving the nozzle 5 is formed on the front end side of the support frame 4. The nozzle 5 is formed in a form in which a nozzle cap 5ca is provided at the ejection side end of a cylindrical nozzle body 5bd. The rear side of the nozzle body 5bd is housed in the support frame 4. Engagement projections 5pr and 5pr projecting on both sides are provided at the rear end of the nozzle body 5bd. Corresponding to the engaging convex portions 5pr and 5pr, engaging concave portions 4gr and 4gr are formed on the inner wall surfaces of the side walls 4wr and 4wr of the support frame 4, respectively. Accordingly, the nozzle 5 is pivotally supported at a fixed position where the engagement recess 4gr is provided in the support frame 4 and can be rotated in the vertical direction. That is, the engaging convex portion 5pr and the engaging concave portion 4gr realize a rotating means that can change the ejection angle of the nozzle 5 in the vertical direction. In addition, the example demonstrated here is an example of a rotation means, and is not limited to this, A conventionally well-known various rotation method is employable suitably.

  In addition, engaging projections 10pr and 10pr that protrude on both sides on the upper end side of the connecting member 10 are also provided. The engaging convex portion engages with an operation lever described later, and is positioned below the support frame 4.

Further, the operation lever 30 is set so as to be rotatable about a projection 7pr provided in the vicinity of the fixed base 7tp of the engagement base 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. By the way, since the engagement base 7 is provided at a position offset from the axis CL as described above, the fixed base 7tp of the support frame 4 and the protrusion 7pr serving as the pivot shaft of the operation lever 30 are provided at one place. Adjacent structures can be used.
The operation lever 30 is hollow, and an opening 32 is formed above it. The operation lever 30 accommodates the entire support frame 4 positioned and fixed on the base portion 2 via the engagement base portion 7 inside, and the portion including the nozzle 5 on the tip side from the opening 32 is a face. (See FIG. 1). Therefore, the operation lever 30 has a compact structure in which the entire support frame 4 is accommodated.

  The operating lever 30 is provided with a receiving portion 33 that engages with the engaging convex portion 10pr of the connecting member 10 when rotated. 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. Further, by setting in advance an urging force that resists the operation of pulling the operation lever 30 (acts so as to push the operation lever 30 back), the operation lever 30 can repeatedly eject liquid. 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.

Next, a state when the trigger type liquid ejector 1 having the above configuration is operated will be described with reference to FIGS. 3 and 4 in the case where the ejection angle of the nozzle 5 is not changed.
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 on the support frame 4 fixed to the engagement base portion 7 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.

  The trigger liquid ejector 1 can fix the position of the nozzle 5 even when the connecting member 10 moves up and down like the conventional trigger liquid ejector. This is because the pipes 20 are connected. That is, the distance change (first distance change) between the nozzle 5 and the connecting member 10 generated when the operation lever 30 is operated is handled (absorbed) by the change in the position and posture of the pipe 20. . Therefore, it is preferable to design the space EM in the support frame 4 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.

FIG. 5 is a view showing a state in which the nozzle 5 is further rotated with respect to the support frame 4 in the trigger type liquid ejector 1. As described above, since the engaging convex portion 5pr of the nozzle 5 is engaged with the engaging concave portion 4gr of the support frame 4, the ejection angle can be changed in the vertical direction. Therefore, even when it is necessary to change the ejection angle in the vertical direction and eject the liquid, according to the present trigger-type liquid ejector 1, the ejection angle can be changed, so that an excessive burden is placed on the operator's wrist and the like. There is nothing.
In addition, even if the nozzle 5 is rotated as shown in FIG. 5, a distance change (second distance change) occurs at the position of the nozzle 5 and the connecting member 10 as in the case described above. . This change in distance can be handled in the same manner as described above by the elastic pipe 20.

FIG. 6 is a diagram showing an example of a positioning unit that can be used to keep (maintain) the nozzle ejection angle at a predetermined level when the nozzle 5 is rotated in the vertical direction by the above-described configuration.
On the inner wall surface of the support frame 4, a plurality of convex portions 4 pn are arranged in an arc shape for positioning in the vertical direction. On the other hand, on the nozzle body 5bd side of the nozzle 5, a recess 5pn that is detachably fitted to the 4pn is provided. The convex portion 4pn of the support frame 4 and the concave portion 5pn of the nozzle 5 constitute a positioning means, and when the nozzle 5 is rotated, a desired ejection angle can be stably maintained. If a positioning means is further provided in this way, a more convenient trigger type liquid ejector can be provided. In addition, the above is an example and the uneven | corrugated relationship of 4pn and 5pn is good also as a combination contrary to the above.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to eject a liquid reliably in the intended position, the easy-to-use trigger type | formula liquid ejector which can also change an ejection angle in an up-down direction as needed can be provided. As a result, it is possible to accurately eject the liquid at the expected position and obtain a certain effect.

DESCRIPTION OF SYMBOLS 1 Trigger type liquid ejector 2 Base part 3 Pump mechanism 3pl Stem member 4 Support frame 4gr Engaging recessed part 4pn Convex part (positioning means)
5 nozzle 5pr engagement convex part 5pn concave part (positioning means)
7 Engagement base (support structure)
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 arranged so as to be movable up and down with respect to the base portion to be moved, and a stem member that is pivotable about a pivot shaft provided on a support structure erected on the base portion. A trigger type liquid ejector having an operating lever for moving
In a fixed position of the support frame fixed to the base portion, the nozzle is pivotally supported so as to be rotatable, and the ejection angle in the vertical direction can be changed.
A cylinder that is slidably connected to the stem member and is engaged with the operation lever, and a pressing force is applied to the stem member based on a pulling operation of the operation lever, and the cylinder can be raised together with the stem member A connecting member in the shape of
The trigger type liquid ejector, wherein the nozzle and the connection member are connected by a pipe having elasticity for allowing the liquid to flow therethrough.   2. The trigger type liquid ejector according to claim 1, wherein the rotation unit further includes a positioning unit that keeps a predetermined ejection angle of the nozzle. 3.   A space for allowing movement of the pipe whose position and posture change with the operation of the operation lever or the rotation operation of the nozzle is set inside the support frame, and the operation before the pulling operation is performed. The trigger type liquid ejector according to claim 1, wherein a play of length is set in the pipe at an initial position of the lever.   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.