JPH04128168A - Spray actuator - Google Patents

Abstract

PURPOSE:To seal fluid to prevent its quality change and deterioration and the clogging of a spray orifice by a method wherein, behind a stopper part, a spring part is formed which is returnably deformable in a direction intersecting the extending direction of a stopper member to move back the stopper part from a spray orifice. CONSTITUTION:When a depressing face 4 is pressed, a stopper member 6 is moved downward in conjunction therewith to press down an operating rod 5 in engagement with the plate spring part 10 of the stopper member 6, while the plate spring part 10 is being deformed into an arcuate form at its place of engaging with the operating rod 5. By this deformation of the plate spring part 10, a free end thereof provided with a stopper 9 is moved back to shift the stopper 9 from its position of sealing a spray orifice 7 to the opening position so as to spray the contents to outside. At the end of the spray when the depressing face 4 is released, since a spray actuator 1 is moved upwards to release the force on the stopper member 6 therefrom, the plate spring 10 is returned to its horizontal position by its own resilient force, whereby the stopper part 9 seals the spray orifice 7 to prevent the contents from exposure to outside air.

Description

[Detailed description of the invention]

[0001]

[Industrial application field]

The present invention relates to an injection actuator attached to a container filled with fluid under a predetermined pressure, and when the actuator is pushed down, the fluid is injected from the injection port, and the remaining fluid inside the injection port is removed by a stopper. This invention relates to an actuator for injection that can be sealed. [0002]

[Conventional technology]

Conventionally, for example, a container for cosmetics, etc., a container is filled with liquid under a predetermined pressure, and an outlet pipe is provided that communicates with the spout part of the container and extends upward, and the jet port is provided on an extension of the pipe. An injection actuator is known. In this injection actuator, a fine hole is bored in the horizontal direction at the upper part of the pipe, and the fine hole is tightly covered with an annular elastic belt made of rubber or the like so as to tighten it without any gaps. Therefore, the liquid that is injected from inside the container and introduced into the pipe line is
The pressure in the pores expands the elastic belt, forming gaps between the pores, and the liquid flows out through the gaps and is injected to the outside through the injection port. In the above configuration, the pore area is sealed again by the elastic belt after injection, but the injection port is not sealed in any way, so the liquid that flows out from the pore and remains inside the injection port is exposed to the air flowing in from the injection port. It ends up. In particular, when the contents have post-foaming properties, there is a risk of foaming within the injection port, and there is also a risk of quality deterioration due to oxidation. Furthermore, there is a possibility that the liquid leaking from the pores may seep out from the gap between the spout portion and the jetting actuator and leak to the outside of the container. Further, when the injection port is set to be small, such as when the injection actuator is used for spraying, there is a drawback that the injection port is clogged with the resin of the liquid to be sprayed. [0003]

[Problem to be solved by the invention]

This invention was created in view of the above circumstances, and
The main challenges are to seal the fluid remaining in the injection actuator after injection to prevent quality changes and deterioration, and to prevent clogging of the injection port to ensure efficient injection and atomization. The objective is to provide actuators for [0004]

[Means to solve the problem]

In order to solve the above problems, the present invention provides (a) forming an introduction path for introducing a fluid filled into a container; (b)
), is arranged so as to intersect with the tip of the introduction passage and communicates with it, and forms a discharge passage with an injection port at the tip; (C) is built in the direction of the discharge passage, with the tip being a free end and the rear end being a (d) providing a fixed plug member; forming a plug portion at the tip of the plug member to seal the injection port provided at the tip of the discharge path; (e) forming a plug member behind the plug portion; a barb (a barb) forming a spring part which is reversibly bent in a direction intersecting the extending direction to retract the plug part from the injection port, passes through the introduction path, and has a proximal end held in the container; A technical measure is taken in which an operating rod whose tip protrudes toward the discharge path is provided, and during an injection operation, the operating rod presses the spring portion in a direction that does not bend, thereby retracting the plug portion and communicating the injection port with the discharge path. There is. [0005]

[Effect]

When an injection operation is performed, the spring portion of the plug member collides with the operating rod and is pushed, thereby being elastically bent. Due to the deflection of the plug member, the plug portion provided at the tip moves out of the sealed position with the injection port and communicates with the discharge path. Therefore, the contents discharged from inside the container are injected to the outside from the injection port via the introduction path and the discharge path. When the injection operation is completed, the pressing force between the operating rod and the spring section is removed, the elastic return force of the spring section causes the plug member to return to its original position, and the plug section seals the injection port. As a result, the contents discharged from the spout inside the container are sealed inside the actuator at the stopper, so they are not exposed to the outside air, and there is no change in quality or deterioration, and there is no leakage to the outside of the container. There is no. [0006]

【Example】

A preferred embodiment in which the injection actuator of the present invention is attached to a container filled with liquid under a predetermined pressure will be described below. The injection actuator 1 of the first embodiment shown in FIGS. 1 and 2 is for injecting a post-foaming liquid, etc., and is composed of a nozzle body made of synthetic resin. It is removably attached to. [0007] That is, in the case of this embodiment, the container 20 is an inner container 22 filled with the contents (post-foaming liquid in this embodiment) 30 under a predetermined pressure, as shown in FIGS. 4 and 5. It has an internal opening 26 through which a spout 21 provided at its upper end communicates with the internal container 22, a mounting base 27 surrounding the outside of the internal opening 26, and a mounting base 27 that opens and closes the internal opening 26 from the inside. an inner lid 23 that holds the inner lid 23 in the closed position; a spring 24 that stores the inner lid 23 and the spring 24; It has a known structure consisting of a holder 25 that is locked to the holder 25. In addition, 28 in the figure is a gasket made of a rubber material. [0008] Next, the injection actuator 1 is integrally molded from a synthetic resin material such as polypropylene or polyethylene, and is shown in FIG.
As shown in the figure, the body 1' has a substantially cylindrical shape, and a locking step portion 1A that locks with the upper end step portion 27A of the mounting base portion 27 is formed on the circumferential surface of the body 1'. An operation surface 4 for pressing is formed. Further, as clearly shown in Fig. 1, a discharge pipe section 3 is integrally formed in the middle of the body 1', extending horizontally in the diametrical direction and having a slightly larger injection lower at the tip. At this position, an introductory pipe section 2 that hangs down perpendicularly thereto is connected. [0009] In the introduction passage 2A, in which the introduction passage 2A of the introduction pipe part 2 and the discharge passage 3A of the discharge pipe part 3 are in communication, an operating rod 5 having a smaller diameter than the inner diameter of the introduction passage 2A is provided to create a gap. It is inserted through the top and bottom. The operating rod 5 is preferably made of a material having a strength that does not deteriorate in quality due to the contents 30 and does not deform even when repeatedly pressurized, and in this embodiment, it is made of a hard acetal synthetic resin. Materials (Sheracon, etc.) are used. Both ends of the operating rod 5 protrude upward and downward from the introduction path 2A. As a result, the lower end of the operating rod 5 is connected to the inner lid 2 when the injection actuator 1 is engaged with the container 20, as shown in FIG.
3, and by pushing the operating rod 5 downward, the inner cover 23 can be lowered to open the inner opening 26. [00101] Next, a portion of the inner circumferential surface of the discharge pipe 3 that communicates with the injection lower has a tapered surface 7A that gradually becomes narrower toward the injection lower at the front center. Further, the rear end of the discharge pipe section 3 facing the injection lower is opened to form an opening 8 for attaching a plug member, and the attachment opening 8 has an engaging member having a diameter larger than the inner diameter of the discharge passage 3A. A stop portion 8A is formed. A plug member 6 is built into the discharge passage 3A along its extending direction. In the case of this embodiment, the plug member 6 is made of nylon or acetal-based synthetic resin material, and has a plug portion 9 at its tip that fits tightly into the injection lower, as shown more clearly in FIG. A mounting base portion 11 is provided at the base end opposite to each other via the spring portion 10.
are connected together. Here, the plug part 9 has a base 9A set in the shape of a disk with a smaller diameter than the inner diameter of the discharge passage 3A, and a truncated conical tip having a tapered surface 9B having substantially the same inclination angle as the tapered surface 7A of the injection lower. It is formed in a shape to enable the injection lower to be sealed. [0011] In the above embodiment, the seal of the injection lower is formed on the tapered surface 7A.
Although this was done by abutting the tapered surface 9B, an appropriate sealing means such as an O-ring may be provided on the tapered surface 9B. Further, 90 in the figure is a reinforcing rib connected to the base portion 9A. A plurality of hemispherical guide protrusions 12 (in the illustrated example, four equally spaced in the circumferential direction) are provided on the outer periphery of the base 9A of the plug portion 9, which abut against the inner circumferential wall of the discharge passage 3A. is the discharge path 3
It is formed so that it can move forward and backward along the center line of A. [0012] Next, the mounting base portion 11 has a fitting base portion 11A set equal to the inner diameter of the discharge pipe 3A and a large diameter outside thereof to engage with the locking step portion 8A of the mounting opening 8. Collapsible flange 11B
It has Then, the fitting base part 11A is fitted into the mounting opening 8 at the rear end of the discharge passage 3A formed in the body 1' without a gap, and the collar part 11B is engaged with the locking step part 8A to fix the plug member. 6 is installed in the discharge passage 3A. As a result, the plug member 6 extends horizontally, and the plug portion 9 is set in a position to close the ejection lower (see FIGS. 1 and 3). The upper end of the actuating rod 5 is disposed at a midway position of the plate spring portion 10 of the plug member 6 mounted in this manner so as to be pressable. [0013] Next, the operation of the injection actuator having the above configuration will be explained with reference to FIGS. 4 and 1. When the pressing operation surface 4 is pushed down, the plug member 6 is lowered, and the leaf spring part 10 is activated at the same time while pressing down the operating rod 5 that abuts with the leaf spring part 10 of the plug member 6. It bends in an arc shape at the position where it collides with the rod 5 (see the imaginary line in Fig. 1). The operating rod 5 pushes down the inner lid 23 of the inner container 20 to create a gap between it and the gasket 28, and the pressurized contents 30 are transferred through the gap from the inner opening 26 to the introduction path 2.
Discharge into A. On the other hand, due to the deflection of the plate spring part 10 of the plug member 6, the free end side of the plate spring part 10 where the plug part 9 is provided retreats, and the plug part 9
is guided by the guide protrusion 12 from the sealed position with the injection lower shown by the solid line in FIG. is displaced to the opening position shown by the imaginary line. Therefore, the pressurized and discharged contents 30 are transferred to the introduction path 2A.
The fuel is injected to the outside from the injection lower via the discharge passage 3A. When the injection is finished and the pressing operation surface 4 is no longer pressed, the inner cover 23 moves up by the return force of the spring 24 urging in the closing direction and closes the internal opening 26, and in conjunction with this, the injection actuator 1 is activated. move up Further, since no force is applied to the plug member 6, the plate spring portion 1
Contrary to the above, the elastic restoring force of 0 itself returns to the horizontal position shown by the solid line, and the plug part 9 seals the injection lower. As a result, the contents 30 discharged from the container 20 are transferred to the stopper 9.
Since the discharge passage 3A and the introduction passage 2A are sealed, they are not exposed to the outside air. [0014] FIG. 6 shows the injection actuator 1 of the second embodiment, which is attached to a container 20 having the same configuration as the first embodiment. This injection actuator 1 has a structure for ejecting liquid in the form of a spray, and has a body 1 similar to the first embodiment.
A discharge pipe section 3 is integrally formed at a midway point of the discharge pipe section 3 which extends horizontally and has an injection lower with a diameter of tJ) at the tip, and at a midway point of the discharge pipe section 3, it communicates with this and is perpendicular to the discharge pipe section 3. A hanging introduction pipe section 2 is provided in series. An operating rod 5 is inserted vertically into the introduction path 2A of the introduction pipe section 2, and a plug member 6 is built into the discharge path 3A of the discharge pipe 3. The first half of the discharge pipe 3 is formed by a substantially cylindrical nozzle tube 18 fitted to the tip of the body 1'. [0015] As shown in FIGS. 6 and 10, the plug member 6 has a plug portion 9 at its tip that closes the injection lower, and has a guide portion 12 having an elliptical or oval cross section at the rear thereof. There is. Here, the guide portion 12 has a circumferential wall in the longitudinal direction that is slidably in contact with the inner circumferential surface of the discharge pipe line 3, and an opposing circumferential wall in the transverse direction that is flat and faces the inner circumferential surface of the discharge pipe line 3. There are substantially equal gaps S and S between the two (see FIG. 7). At the rear of this guide part 12 is a plate spring part 1 having spring properties.
0 are connected in series, and a mounting base portion 11 is formed at the rear end. In the case of this embodiment, the leaf spring section 10 has the maximum wall thickness at the central portion, and has three thicknesses set in stages to enhance strength and springiness. Further, the mounting base portion 11 is fitted into the mounting opening 8 at the rear end of the discharge passage 3A of the body 1' without a gap and is fixed, so that the plug member 6 is installed in the discharge passage 3A. At this time, the plug member 6 extends horizontally as shown in FIG.
The plug part 9 is set in a position to close the ejection lower. [0016] The plug portion 9 of the plug member 6 is fitted into a fitting body 13, and the fitting body 13 is fitted into the nozzle cylinder 18 without a gap. As shown in FIGS. 6 and 8, this fitting body 13 has a substantially cylindrical shape that contacts the inner circumferential surface of the discharge pipe portion 2 without a gap, and has a small diameter tip. have. A plurality of (three in the illustrated example) guide grooves 14 are formed on the outer periphery of the fitting body 13 and extend toward the injection lower.
A stepped portion 15 is formed in the circumferential direction at the tip. Here, the guide grooves 14 are arranged at equal intervals in the circumferential direction of the fitting body 13 and communicate with the stepped portion 15, and have a small diameter introduction path 14A between the inner circumferential surface of the discharge pipe portion 2 and the distal end thereof. An annular path 15A is formed. [0017] On the other hand, the inner peripheral surface of the nozzle cylinder 18 in which the injection lower is formed,
It has a first tapered surface 16A communicating with the injection lower and a second tapered surface 16B connected thereto. The second tapered surface 16B has a spiral guide groove 1.
As shown in FIG. 9, three grooves 7 are formed at equal intervals so as to extend in the tangential direction of the circle, and form a spiral flow path 17A with the outer peripheral surface of the fitting body 13. The first tapered surface 16A is connected to the tip of the second tapered surface 16B and extends horizontally, and is then formed of a guide surface that is inclined toward the injection lower at a predetermined spray angle, and forms an annular gap between the first tapered surface 16A and the plug body 9. is formed so that it can communicate with the annular path 15A. [0018] With the above configuration, when the pressing operation surface 4 is pushed down, the leaf spring portion 10 of the plug member 6 presses the operating rod 5 downward, and at the same time, the leaf spring portion 10 collides with the operating rod 5. It bends in an arc shape at the matching position (see Figure 11). The operating rod 5 has a content 3 made of pressurized liquid.
0 is discharged from the jet port 21 into the introduction path 2A in the same manner as in the first embodiment. On the other hand, due to the deflection of the leaf spring portion 10 of the plug member 6, the plug body 9 is guided by the guide portion 12 and retreats along the center line of the discharge path 3A, thereby opening the injection lower. Therefore, the pressurized and discharged liquid 30 passes from the introduction path 2A to the discharge path 3A and is divided into two by the gap S of the guide part 12.
Further, the flow is branched into three through an introduction path 14A formed by the fitting body 13, and the flow is merged into three through an annular path 15A, where the pressure is adjusted to be uniform. [0019] Next, the annular path 15A is branched into three swirl channels 17A, and the liquid that has passed through each swirl channel within the first tapered surface 16A collides to form a swirl flow, and is sprayed at a predetermined spray angle. The liquid can be ejected from the ejection lower in the form of a spray. When the injection is finished and the pressing operation surface 4 is no longer pressed, the injection actuator 1 is activated by the return force of the blade ring 24 inside the container.
rises. Further, since no force is applied to the plug member 6, a gap is created between the plug member 6 and the operating rod 5, and the elastic restoring force of the leaf spring portion 10 itself returns to the horizontal position, and the plug member 9 moves toward the injection lower as shown in FIG. Seal. As a result, the liquid 30 discharged from the container 20 is sealed within the discharge path 3A and the introduction path 2A by the stopper 9, and is not exposed to the outside air. [0020] The shape of the leaf spring portion is not limited to the above embodiments as long as it can be bent to return to its original shape by elastic force when it collides with the operating rod, and may be rod-like or any other shape. ). Further, in the present invention, the contents to be filled into the container may be any liquid or other fluid, and the type thereof is not limited. Furthermore, regarding the structure that uses pressurized force to inject the fluid that is the contents filled in the container, there is a non-gas structure that fills the inner container that is biased in the contraction direction, or a compressed gas such as fluorocarbon gas. It may also be possible to use an appropriate means such as one using a pressing force of . Further, the actuating rod may be fixed or simply held within the container, and the injection operation may be performed in a different configuration. In this case, the operating rod may be configured to press the spring portion of the stopper member in the bending direction in conjunction with the injection operating means during injection, and is not limited to the configuration that pushes down the injection actuator as in this embodiment. . In addition, the material of each component of the injection actuator is made of synthetic resin in this example, but in short, any material that has properties that will not deteriorate in quality due to the contents filled in the container and strength that is appropriate for the function will be used. good. [0021]

【Effect of the invention】

By using a plug member with a simple structure, the present invention can seal the contents remaining in the actuator after injection, so that the quality of the remaining contents does not change or deteriorate. Further, since the contents discharged from the inner container are sealed in the direction of the introduction path and the discharge path communicating therewith, there is no leakage to the outside, which is extremely beneficial. In particular, since the stopper is fitted all the way to the tip of the nozzle and is sealed, the nozzle can be prevented from being clogged with the resin content, and jetting and spraying can be carried out efficiently at any time.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a first embodiment of an injection actuator of the present invention.

[Figure 2] It is a rear view of the same.

[Figure 3] It is a perspective view showing a stopper member.

FIG. 4 is a sectional view of main parts when the injection actuator is attached to the container.

[Figure 5] It is a front view of the same.

FIG. 6 is a partial sectional view of the injection actuator of the second embodiment.

[Figure 7] FIG. 7 is a sectional view taken along line XX in FIG. 6;

[Figure 8] FIG. 7 is a sectional view taken along line Y-Y in FIG. 6;

[Figure 9] 7 is a sectional view taken along the Z-X line in FIG. 6. FIG.

[Figure 10] It is a perspective view showing a stopper member and an operation rod.

FIG. 11 is a sectional view of the spray actuator showing the state during spraying.

[Explanation of symbols]

1 Injection actuator 1′ Body 2 Introductory pipe section 2A Introductory path 3 Discharge pipe section 3A Discharge path 5 Operating rod 6 Plug member 7 Injection port 4A 5A 6A 6B 7A stopper Leaf spring part guide abutment mating body guide groove introduction route Stepped section ring road 1st tapered surface 2nd tapered surface Guide groove for spiral vortex flow path

【Document name】

[Figure 1]

[Figure 2] drawing

[Figure 3]

[Figure 4]

[Figure 5]

[Figure 6]

[Figure 71 [Figure 8]

[Figure 9]

[Figure 10’l [Figure 11]

Claims (4)

[Claims] Claim 1: An introduction path for introducing a fluid filled into a container, a discharge path arranged to intersect with and communicate with the tip of the introduction path, and having an injection port provided at the tip, in the direction of the discharge path. a built-in plug member with a free end and a fixed rear end; a plug part formed at the front end of the plug member to seal an injection port provided at the tip of the discharge path; and a plug part formed at the rear of the plug part. a spring portion that is reversibly bent in a direction intersecting the extending direction of the plug member to retract the plug portion from the injection port; An actuator for injection comprising an operating rod whose tip protrudes in the direction of the discharge path, and which presses the spring portion in the direction of bending during the injection operation to retract the plug portion and communicate the injection port with the discharge path. 2. The injection actuator intersects with an introduction path that communicates with an injection port formed in a container filled with a fluid as a content under a predetermined pressure, and a tip of the introduction path. The actuating rod is inserted into the introduction passage so that the base end can press the spout part in the container, and the dispensing rod has a discharge passage having a jet nozzle at its tip. protrudes in the direction of the discharge path, a plug member extends from its tip in the direction of the discharge path beyond a communicating portion with the introduction path and is fixed at the rear of the discharge path, and a plug portion formed at the tip of the plug member The injection port provided at the tip of the discharge path is sealed, and when the plug member is bent due to the collision between the operating rod and the spring portion of the plug member, the plug portion is removed and the injection port and the discharge path are sealed. The injection actuator according to claim 1, wherein the injection actuator communicates with the injection actuator. 3. A guide portion on the plug member, which is set to a size that does not block the cross section of the discharge path behind the plug portion, and is slidable with a part of the outer periphery abutting the inner peripheral surface of the discharge path. 2. The injection actuator according to claim 1, further comprising: an injector. 4. A groove for forming a vortex is formed on the inner circumferential surface of the discharge passage connected to the injection port, and a fitting body is fitted into the tip of the plug member, and the fitting body has an outer periphery extending toward the injection port. Claim 1 characterized in that a plurality of guide grooves are formed.
, 2 or 3.