JP5642580B2 - 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.

Trigger type liquid ejectors are widely used in many fields because they can evenly eject the liquid in the container simply by being attached to the mouth of the container in which the contents (liquid) are stored. . Various types of trigger type liquid ejectors have been proposed in the past.
For example, the trigger type liquid ejector disclosed in Patent Document 1 has a structure in which the nozzle is fixed to the operation lever in the trigger type liquid ejector prior to Patent Document 1, and thus an improved structure for eliminating the disadvantages. Has proposed.

In Patent Document 1, an upper end portion of a cylindrical piston slidably provided in a cylinder is protruded upward through a central portion of an operation lever of a trigger, and a nozzle can be turned to a tip portion of the cylindrical piston. Discloses a trigger type liquid ejector that can be turned by a nozzle that is fitted to a nozzle to form a liquid dispensing device. The structure of this trigger type liquid ejector will be briefly described. A cylindrical piston that slides in the cylinder is arranged. A cylindrical channel structure (hereinafter, a configuration corresponding to this structure is referred to as a “stem”) that pumps the liquid in the container upward is provided above the piston. The stem rises upward, and the tip of the stem projects through the center of the operation lever. A nozzle is fitted to the tip so as to be freely turned.
Therefore, according to the trigger type liquid ejector of Patent Document 1, the direction in which the liquid (the contents of the container) is ejected can be easily and freely selected. Even if it is used in the direction, it is easy to use because it is only necessary to change the direction of the nozzle, or it can be applied in a place where it is difficult to inject with a conventional trigger type dispensing container.

JP 2002-37301 A

  In the trigger type liquid ejector according to Patent Document 1 described above, a locking portion that protrudes outward is provided on the stem. This locking portion is a structure for locking to the through hole provided in the operation lever when the operation lever is pulled. Therefore, when a pulling operation (checking operation) for gripping the operation lever is performed, the stem is pushed down because the through hole of the operation lever is locked to the locking portion. After that, when the operating lever is released (released), the stem is pushed back (pushed up) by receiving the reaction force of the spring member provided in the cylinder. Therefore, the liquid can be pumped and ejected to the nozzle side by repeatedly drawing and separating based on the grip and release of the operation lever.

By the way, in the trigger type liquid ejector by patent document 1, the nozzle is supported by the front-end | tip part of a stem as mentioned above. For this reason, when the stem is lowered by pulling the operating lever toward the front in order to eject the liquid, the nozzle position on the stem is also lowered accordingly. As described above, even if the position of the nozzle moves up and down, it is not a problem as long as the medicine 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 are cases where the liquid is cosmetics or hair and it is a liquid medicine or the like whose contents are desired to be sprayed to a predetermined location when it is desired to spray it precisely in a narrow area. In such a case, when the position of the nozzle fluctuates with the ejection operation, there is a disadvantage that the liquid adheres to a place deviated from the place intended by the operator.

  As described above, the trigger type liquid ejector according to Patent Document 1 is an easy-to-use ejector in that it has a structure capable of ejecting the contents in an arbitrary direction, but it needs to be ejected accurately to the intended location. If it is a content, there is still room for improvement.

Therefore, an object of the present invention is not only to change the direction of ejection, but also to provide 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. It is to propose.
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 ejected in the form of a mist, a liquid ejected in the form of liquid droplets, or a liquid columnar linear ejector. It is.

An object of the present invention is an ejector that is attached to the mouth of a container to eject liquid in the container,
The lower end side is connected to the nozzle that ejects the liquid and the pump mechanism that supplies the sucked 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 arranged to be movable up and down with respect to the base portion to be moved, and an operation for moving the stem by a pulling operation that is rotatable about a pivot shaft formed on a support provided on the base portion A trigger type liquid ejector having a lever,
The nozzle is supported by a support frame fixed to the base portion, and the nozzle ejection direction of the nozzle can be changed by rotating the nozzle base about an axis set in parallel with the moving direction of the stem. A cylinder that is connected to the stem and is engaged with the operation lever, and that is provided with a pressing force to the stem based on a pulling operation of the operation lever and can be raised together with the stem. further comprising a Jo of the connecting member, wherein the nozzle and the connecting member, Ri Thea connected by a tubular member having a resilient circulating the liquid, the support frame, the nozzle side of the distal end portion of said tubular member An insertion recess, and a fitting cylinder base erected at a position where a through-hole provided in a wall portion defining a part of the insertion recess exists in the cylinder. Provided, the insertion recess Wherein the inserting the distal end of the tubular member, the nozzle is in the fitting cylindrical base portion that has been fitted rotatably, is achieved by triggering the liquid ejector, characterized in that the.

  Moreover, it is preferable to provide the notch which permits the said liquid to flow to the said through-hole side in the front-end | tip part by the side of the said insertion recessed part of the said tubular member.

Further, the connection member and the tubular member may be integrally formed.
The tubular member may be a tube having elasticity selected from a rubber material and a synthetic resin material.

  ADVANTAGE OF THE INVENTION According to this invention, not only the direction which ejects a liquid can be selected freely, but the easy-to-use trigger type | formula liquid ejector which can eject a liquid reliably in the intended position can be provided.

It is the partial cross section figure which showed the main structure of the trigger type | formula liquid ejector which concerns on this invention so that confirmation was possible, and was the figure which showed the mode when an operation lever exists in an initial position. It is the figure which showed the mode of the state with a position after operating the operation lever about the trigger type liquid ejector of FIG. It is the figure shown about the tubular member used for the trigger type liquid ejector of FIG. It is the figure which expanded and showed a part of structure shown in FIG.

Hereinafter, a preferred embodiment of a trigger type liquid ejector according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a partial cross-sectional view showing a main configuration when an operation lever of a trigger type liquid ejector according to the present invention is in an initial position, and FIG. 2 shows a state when the operation lever is in a position after being pulled. FIG. Moreover, FIG. 3 is the figure which took out and showed the tubular member used for a trigger type liquid ejector.

1 and 2, the trigger type liquid ejector 1 is attached to the mouth of the container BT and is used when ejecting the liquid stored therein. 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. 1, 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. The member that rises at the center of the opening 2a is a stem 3st that extends from the pump mechanism 3 side, and is a flow path that is arranged so as to be movable up and down and supplies the liquid pressurized by the pump mechanism 3 toward the nozzle 5. This is a cylindrical member.

The stem 3st is connected so as to cover the connecting member 10 formed in a cylindrical shape. Therefore, the connecting member 10 moves up and down together with the stem 3st, and moves downward when the operation lever 30 shown in FIG. At this time, as shown in the figure, it is desirable to design the connecting member 10 so as to be accommodated in the space SP of the base portion 2. As a result, even when the connecting member 10 is connected to the stem 3st, the stroke amount can be secured without causing an obstacle to the movement of the stem 3st. Further, the connecting member 10 is engaged with an operation lever 30 described later, and applies a pressing force to the stem 3st based on a pulling operation of the operation lever. Further, the connecting member 10 forms a flow passage for the liquid rising toward the nozzle 5 together with the stem 3st.
The stem 3st is substantially the same as the hard cylindrical 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. However, the point by which an upper end is connected with the connection member 10 differs from the past.

And as shown in FIG. 1, the upper end side opening 10a of the connection member 10 is connected with the nozzle 5 side via the tubular member 20 provided with the elasticity (flexibility) which distribute | circulates a liquid. Here, the tubular member 20 may be a tubular or elastic member provided with a passage through which liquid can be circulated, and is not limited thereto. For example, the cross-sectional shape is not limited to a circular shape, but may be an elliptical shape or a polygonal shape such as a triangle, a square, or a pentagon.
Such a tubular member 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.

FIG. 3 is a view showing the tubular member 20 shown in FIGS. 1 and 2 together with the connecting member 10.
As described above, the tubular member 20 is formed of a flexible material. A base portion 20 a on one end side of the tubular member 20 is connected to the connection member 10. The tubular member 20 and the connecting member 10 may be connected separately after that, but it is preferable to form the tubular member 20 and the connecting member 10 integrally as shown in FIG. . Thereby, the number of parts can be substantially reduced.
The other end of the tubular member 20 (referred to as the tip 20b) is processed to be inserted into an insertion recess described later. That is, the distal end portion 20b is provided with a positioning flange portion 20fl projecting annularly from the distal end position to a position of length L. A concave portion 20gr is provided on the outer periphery of the tubular member 20 on the distal end side of the flange portion 20fl. The recess 20gr may be formed in an annular groove, for example.
Furthermore, a notch 20nt is formed in a part of the tip 20b. The notch 20nt is formed as a structure for smoothly flowing liquid when the distal end portion 20b of the tubular member 20 is set (fitted) in an insertion recess described later.

  Further, the connecting member 10 is provided with engaging convex portions 10pr and 10pr projecting on both sides. The engaging projection has a structure that engages with an operation lever 30 described later.

Further, referring to the drawing, the structure for supporting the nozzle 5 provided in the trigger type liquid ejector 1 and the direction of ejection are changed around an axis set parallel to the moving direction of the stem (vertical direction in FIG. 1). The structure that can be swung is explained.
A support frame 4 is fixed on the base portion 2. The support frame 4 serves as a support body that supports the nozzle 5. Here, the illustrated support frame 4 is a structure including a head 4hd for setting the nozzle 5 on the upper end of the leg 4lg rising from a position slightly offset from the stem 3st side. The head 4hd is arranged so as to protrude toward the center side (so as to return the offset), and the head 4hd is located above the stem 3st. By adopting such an arrangement structure, it is possible to suppress a wide outer shape and to make the trigger type liquid ejector compact.

The head 4hd of the support frame 4 is formed with a structure capable of changing the direction of ejection of the nozzle 5. Further, the insertion of the tip 20b on the nozzle side of the tubular member described in FIG. A fitting recess is provided. Here, the description will be given with reference to FIGS. 1 and 2 and FIG. 4 in which the periphery of the head 4hd shown in these drawings is enlarged.
In FIG. 4, the head 4hd is provided with a top support plate 4tp. The nozzle 5 is supported on the support plate 4tp so as to be rotatable (swingable), and the nozzle-side tip portion 20b (see FIG. 3) of the tubular member is inserted below the support plate 4tp. An insertion recess 21 is provided. The support plate 4tp is a wall portion that defines a part of the insertion recess.

FIG. 4 shows a state in which the nozzle-side tip portion 20b is inserted and fitted into the insertion recess 21. However, when the tip portion 20b is inserted into the insertion recess 21, the nozzle 20 is fitted and removed. It is configured to be
When the distal end portion 20b of the tubular member is inserted into the insertion recess 21 in the insertion recess 21, the position is restricted by the flange portion 20fl. At this position, the concave portion 20gr provided on the outer periphery of the tubular member 20 and the convex portion 21pr provided on the inner wall of the insertion concave portion 21 are formed so as not to be pulled out (under fitting).

In addition, in FIG. 4, the suitable structure which provided the projection part 21mt inserted inside the front-end | tip part 20b of a tubular member in the insertion recessed part 21 is illustrated. The protrusion 21mt functions as a guide member when the distal end portion 20b of the tubular member is inserted, and also functions as a reinforcing structure so that the distal end portion 20b of the tubular member maintains a fixed shape at the final fitting position. Thus, the above-described fitting functions so as to be stably maintained for a long time.
Although not shown here, it is desirable to arrange an annular seal member such as an O-ring between 21 ed between the flange portion 20 fl and the end of the insertion recess 21.

When the nozzle-side tip 20b is fitted in the insertion recess 21 as described above, the notch 20nt (see FIG. 2) is positioned at a position facing or contacting the support plate 4tp. Thus, the distal end portion 20b of the tubular member is formed.
A through hole 4hl is formed in the support plate 4tp at a position facing the notch 20nt. Further, the fitting cylindrical base 7 is erected on the support plate 4tp so that the through hole 4hl is positioned inside the cylinder.
As is clear from the above description, the liquid rising in the tubular member 20 is supplied to the nozzle 5 side through the through-hole 4hl without any obstacle because the notch 20nt is provided at the tip 20b. The flow path is provided in the head 4 hd of the support frame 4.
By the way, in the example, it is desirable that the notch portion 20nt provided in the tip portion 20b on the nozzle side is provided as a pair so as to face each other vertically. The lower side (the side that does not face the support plate 4tp) hardly contributes to the flow of the liquid, but the structure of the tip 20b is symmetrical so that the insertion operation into the insertion recess 21 is performed smoothly. In addition, there is a structural merit that the state can be stably maintained after fitting.

Further, a structure in which the nozzle 5 can be rotated on the head 4hd will be described.
The nozzle 5 is rotatably supported with respect to the fitting cylinder base 7 described above, and the ejection direction can be changed around an axis set in parallel with the moving direction of the stem as indicated by an arrow AR in FIG. It is set.
The nozzle 5 exemplified here has an L-shaped appearance and the jet outlet 5sp is directed in a direction perpendicular to the moving direction of the stem. The cylindrical nozzle base 5a is fitted so that the opening side covers the fitting cylindrical base 7, and the axis passing through the center of the nozzle base 5a is set in parallel with the moving direction of the stem. Therefore, when the nozzle base portion 5a is rotated with respect to the fitting cylindrical base portion 7, a rotating structure is realized in which the nozzle ejection direction can be changed. As a result, the ejection direction 5sp can be freely set by rotating the ejection port 5sp facing the outside centered on the nozzle base 5a 360 degrees.
The rotating structure shown here is merely an example, and the present invention is not limited to this, and various conventionally known rotating methods can be appropriately employed. For example, in the drawing, the external fitting is performed so as to cover the outside of the fitting cylindrical base 7, but the internal fitting may be performed so as to contact the inner side surface of the fitting cylindrical base 7. Further, it is desirable to adopt a fitting form (such as undercut fitting) that can be rotated after fitting but that cannot be pulled out.
The direction of the jet outlet 5sp is not necessarily perpendicular to the moving direction of the stem, and the jet outlet 5sp only needs to be directed outward in the radial direction with the nozzle base portion 5a as the center. That is, in the illustrated case, the jet outlet 5sp is L-shaped (a shape that is connected substantially vertically) with respect to the nozzle base 5a, but the jet outlet 5sp may be fixed to the nozzle base 5a in an upward or downward inclined posture. Good.

Next, the operation lever 30 will be described.
The operation lever 30 is set to be rotatable around a pivot shaft 8pr provided on the lever support 8 provided on the base portion 2.
The operating lever 30 has a structure in which two plate-like members 30a each having a mountain shape are opposed to each other with a space therebetween, and a part of the peripheral portion thereof is connected to each other. 32 is formed. The operation lever 30 is disposed so that the entire support frame 4 fixed on the base portion 2 is accommodated in the interior, and the nozzle 5 protrudes upward from the opening 32 (see FIG. (See FIGS. 1 and 2). 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 an engaging convex portion 10pr (see FIG. 3) provided on the connecting member 10 when it is turned. On the inner side surface of the plate-like member 30a constituting the operation lever 30, a raised portion 31 that is partially built up in a rectangular shape is provided. A concave receiving portion 33 is formed on the lower end side of the raised portion 31, and the receiving portion 33 is engaged with the convex portion 10 pr of the connecting member 10.
Therefore, when the operation lever 30 is pulled, the connection member 10 can be moved accordingly, so that the stem 3st 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 a biasing force can be provided with a spring member or the like that pushes the stem 3st 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.
FIG. 1 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. 2 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 is apparent from FIGS. 1 and 2, in the trigger type liquid ejector 1, the nozzle 5 for ejecting the liquid is positioned on the support frame 4 fixed 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 this trigger type liquid ejector 1, a liquid can be reliably ejected to the intended narrow position.
Further, the trigger type liquid ejector 1 is configured such that the nozzle 5 is rotatable so that the liquid as the contents can be ejected in an arbitrary direction, so that the liquid can be accurately swung in a desired direction. Can be ejected to the 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 they are connected by the tubular member 20. That is, the change in the distance between the nozzle 5 and the connection member 10 (first change in distance) that occurs when the operation lever 30 is operated is handled (absorbed) by the change in the position and posture of the tubular member 20. is there. Therefore, it is preferable to design the space in the operation lever 30 so as to allow the movement of the tubular member 20 whose posture and position change in this way. By securing a space that allows the movement of the tubular member 20, it is possible to prevent an unreasonable force from acting on the tubular member 20 even if the posture or position changes. Thereby, durability can also be improved.

Then, at the position after the pulling operation (FIG. 2), the length of the tubular member 20 is set to the length of the tubular member 20 when the operation lever is at the initial position (FIG. 1) so as not to generate a pulling force on the tubular member 20. It preferred to leave to have a "play".
This play (excess length) can be set on the basis that the tubular member 20 is not distorted by the pulling force at the position after the pulling operation shown in FIG. In addition, if a change occurs such that the inner diameter (D) of the tubular member 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 that the inner diameter (D) of the tubular member 20 is not changed and narrowed at the position after the pulling operation shown in FIG.

Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the specific embodiments, and various modifications and changes can be made within the scope of the gist of the present invention described in the claims. It can be changed .

  ADVANTAGE OF THE INVENTION According to this invention, not only the direction which ejects a liquid can be selected freely, but the easy-to-use trigger type liquid ejector which can eject a liquid reliably in the intended position can be provided. Thereby, the liquid can be accurately ejected to the expected position in the selected direction, and a certain effect can be obtained.

DESCRIPTION OF SYMBOLS 1 Trigger type liquid ejector 2 Base part 3 Pump mechanism 3st stem 4 Support frame
4hl through-hole 5 nozzle 5a nozzle base 7 cylindrical base for fitting 8 support
8pr pivot shaft 10 connecting member 10a upper end side opening 20 tubular member 20b distal end portion of tubular member 20 20fl flange portion 20gr recessed portion 20nt notched portion 21 insertion recessed portion 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 sucked 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 arranged to be movable up and down with respect to the base portion to be moved, and an operation for moving the stem by a pulling operation that is rotatable about a pivot shaft formed on a support provided on the base portion A trigger type liquid ejector having a lever,
The nozzle is supported by a support frame fixed to the base portion, and the nozzle ejection direction of the nozzle can be changed by rotating the nozzle base about an axis set in parallel with the moving direction of the stem. With a rotating structure
A cylindrical connecting member that is connected to the stem and is engaged with the operating lever, and that applies a pressing force to the stem based on a pulling operation of the operating lever and can be lifted together with the stem. ,
Wherein the nozzle and the connecting member, Ri Thea connected by a tubular member having a resilient circulating the liquid,
The support frame has an insertion recess into which the tip of the tubular member on the nozzle side is inserted, and a through hole provided in a wall portion defining a part of the insertion recess in the cylinder. There is a cylindrical base for fitting that is erected at a position where
Wherein the inserting recess is tip inserted in the tubular member, wherein the fitting cylindrical base that has the nozzle is fitted rotatably, trigger type liquid sprayer, characterized in that. Wherein the distal end portion of the inserting concave side of the tubular member, wherein the liquid are notches for allowing the flow to the through hole side provided, trigger type liquid sprayer in claim 1, characterized in that . The trigger type liquid ejector according to claim 1 or 2 , wherein the connecting member and the tubular member are integrally formed. It said tubular member is a tube with a resilient selected from rubber and synthetic resin material, the trigger type liquid sprayer according to any one of claims 1 to 3, characterized in that.