JP4018896B2 - Ejector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
This invention pushes down an operation button, pushes down the stem, discharges the contents of the container through the inside of the stem, and ejects it from the nozzle of the operation button to the outside. For cosmetics, disinfection, cleaning, medicinal, and painting It relates to the ejector. In particular, the present invention relates to an aerosol-type or pump-type ejector that can switch a jet flow from a jet port between a continuous linear flow and a mist-like diffusion flow.
[0002]
[Prior art]
For example, as shown in FIG. 9, for example, as shown in FIG. 9, for a conventional ejector capable of switching an ejection flow, a switching shaft 3 is attached to a stem 2 protruding from a container 1, and the switching shaft 3 is covered with an operation button 4. Some of them were attached so as to be pivotable around the center.
[0003]
The operation button 4 is formed with a jet passage 4a in a lateral direction, a spring 5 is put in the jet passage 4a, a center post 6 is put, and then a cap-like nozzle member 7 is press-fitted to insert the spring passage 4a. The opening was blocked. Further, the cam portion 3a at the tip of the switching shaft 3 is placed in the ejection passage 4a, and the tail end enlarged portion 6a of the center post 6 is pressed against the cam portion 3a by the urging force of the spring 5. (See Japanese Patent Laid-Open No. 2001-163379.)
[0004]
In the non-use state, as shown in FIG. 10A, the center post 6 is returned half a stroke against the spring 5 by the cam portion 3a, while the nozzle hole 7a of the nozzle member 7 is moved to the shutter portion of the shoulder cover 8. The projection 4b is abutted against the abutment step 8b of the shoulder cover 8 to prevent the operation button 4 from being pushed down.
[0005]
When jetting a continuous linear flow, the cap cover 9 is rotated in one direction around the stem 2 as shown in FIG. Then, the center post 6 is returned by the entire stroke against the spring 5, widening the gap between its tip and the inner surface of the top of the nozzle member 7, while the nozzle 7a is shifted from the shutter 8a and the operation button 4 is depressed. Is possible. As a result, the operation button 4 was pushed down and the contents were continuously and straightly ejected from the nozzle 7a as a continuous linear flow.
[0006]
When the mist-like diffusion flow is ejected, the cap cover 9 is rotated around the stem 2 in the other direction as shown in FIG. Then, the center post 6 is pushed out by the spring 5 for the entire stroke, and the gap between the tip of the center post 6 and the top inner surface of the nozzle member 7 is narrowed, while the nozzle 7a is shifted from the shutter portion 8a and the operation button 4 can be pushed down. To do. As a result, the operation button 4 was pushed down and the contents were diffused and sprayed as a mist-like diffusion flow from the nozzle 7 a through the spiral groove formed on the inner surface of the top of the nozzle member 7.
[0007]
[Problems to be solved by the invention]
However, since such a conventional ejector requires the center post 6 and the spring 5 and the cap cover 9 separately from the shoulder cover 8, the number of parts increases, the structure becomes complicated, and the cost increases. There was a problem.
[0008]
Accordingly, an object of the present invention is to reduce the number of parts, simplify the structure, and reduce the cost in an ejector capable of switching the ejecting flow.
[0009]
[Means for Solving the Problems]
In order to achieve this object, the invention described in claim 1
In the ejector which pushes down the stem by pushing the operation button, discharges the contents of the container through the stem and ejects it from the nozzle of the operation button to the outside,
A cap-shaped nozzle member that forms a spiral groove on the inner surface of the top portion from the outer periphery toward the central nozzle is press-fitted into the button body, and a cylindrical piece is press-fitted into the nozzle member to form the operation button. A first ejection path that directly reaches the nozzle through the inside of the coma without passing through the spiral groove, and a second ejection path that reaches the nozzle through the spiral groove from between the nozzle member and the frame ,
Further, a button mounting member is fixed to the stem, and a shaft portion is formed on the button mounting member to form a notch by cutting out a part in the circumferential direction, and the shaft portion communicates with the internal flow path of the stem. An internal flow path is provided, and an operation button is rotatably attached around the shaft portion.
A continuous linear flow ejection position that allows the internal flow path of the button mounting member and the first ejection path to communicate with each other through the notch of the button mounting member and allows a continuous linear flow to be ejected from the nozzle, and button mounting by the notch A mist-like diffusion flow jetting position that cuts off the communication between the internal flow passage of the member and the first jet passage and allows the mist-like diffusion flow to be ejected from the nozzle through the second jet passage from the internal passage of the button mounting member; In addition, the operation button is rotatable.
[0010]
According to a second aspect of the present invention, in the ejector according to the first aspect, the button mounting member is provided with a flange portion on which the operation button is placed and a shaft portion.
[0011]
Invention of Claim 3 forms the positioning protrusion which positions an operation button in a continuous linear flow ejection position or a mist-like diffused flow ejection position in the flange part in the ejector of Claim 2 . It is characterized by that.
[0012]
According to a fourth aspect of the present invention, in the ejector according to the first, second, or third aspect, a notch is formed at the tip of the shaft portion.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, the principal part longitudinal cross-section of the aerosol-type ejector by this invention is shown.
[0015]
Reference numeral 10 in the figure denotes a container. The container 10 is made into a bottle shape with, for example, a plastic material and stores the contents together with the propellant inside although not shown. The mouth 10a is covered with a mountain cup 11 and the outer periphery thereof is tightened, and the injection valve device 12 is attached.
[0016]
The injection valve device 12 is provided with a vertical cylindrical housing 13 having a step portion 13a in the middle. The upper end portion of the pipe 14 extending from the lower end portion to the bottom portion of the container 10 is press-fitted into the small diameter portion 13 b below the housing 13. A spring 15 is placed in the large-diameter portion 13 c above the housing 13 and placed on the stepped portion 13 a, and then the lower portion of the stem 16 is inserted and placed on the spring 15.
[0017]
The stem 16 has a communication hole 16c in the neck portion 16a that allows the internal flow path 16b to communicate with the outside, and the communication hole 16c is formed around the neck portion 16a by fitting the edge of the center hole of the ring-plate-shaped packing 17. Close up.
[0018]
The stem 16 is provided so as to be freely inserted into and removed from the housing 13, and is inserted into the center hole of the mountain cup 11. The mountain cup 11 is hung on the upper part of the housing 13 and holds the pipe 14, the spring 15, the stem 16, the packing 17 and the like held together with the housing 13.
[0019]
A cylindrical cover member 18 is fitted into the tightening portion 11 a of the mountain cup 11 to cover the center portion of the mountain cup 11. The stem 16 protruding upward from the center of the mountain cup 11 is press-fitted into the center of the button mounting member 19. Thereby, the button attachment member 19 is fixed and attached to the stem 16 through the internal passages 16b and 19a.
[0020]
As shown in FIG. 2, the button mounting member 19 is provided with a flange portion 19A and a shaft portion 19B. On the flange portion 19A, two arc-shaped positioning protrusions 19b are formed to face each other. On the other hand, the shaft portion 19B is provided with an internal flow path 19a inside, and a notch 19c is formed at the tip by notching part of the circumferential direction.
[0021]
Then, as shown in FIG. 1, the operation button 20 is put on the button mounting member 19 and placed on the flange portion 19A so that the shaft portion 19B is not easily removed in the axial direction, but is rotated around the shaft portion 19B. Mount freely.
[0022]
The operation button 20 has a horizontal hole 20a formed in the button body, and a cap-shaped nozzle member 21 having a nozzle hole 21a at the top is press-fitted therein. As shown in FIG. 3, a plurality of spiral grooves 21 b are provided on the top inner surface of the nozzle member 21. A cylindrical piece 22 is press-fitted into the nozzle member 21 to form a first ejection path A and a second ejection path B.
[0023]
By the way, two ribs 20b extending in the vertical direction are provided on the inner periphery of the operation button 20 so as to protrude inward and to face each other. When the operation button 20 is rotated in one direction with respect to the container 10, the button mounting member 19 fixedly attached to the stem 16 does not rotate, and the two ribs 20b are respectively shown in FIG. The operation button 20 is set to the continuous linear flow ejection position by abutting against the positioning protrusion 19b of the button mounting member 19.
[0024]
Then, as shown in FIG. 1, the notch 19 c of the button mounting member 19 faces the position of the lateral hole 20 a of the operation button 20, and connects the internal flow path 19 a of the button mounting member 19 and the first ejection path A.
[0025]
Therefore, when the operation button 20 is pushed in at this continuous linear flow ejection position, the stem 16 is pushed down as shown in FIG. 5, the packing 17 is deformed, and the contents of the container 10 are transferred from the communication hole 16c to the stem 16 by the pressure of the injection material. Is inserted into the first flow path 16b of the operation button 20 from the internal flow path 19a of the button mounting member 19 and discharged into the first ejection path A of the button mounting member 19, and the ejection port is formed through the first ejection path A. The contents can be continuously and straightly ejected from 21a as a continuous linear flow.
[0026]
Further, when the operation button 20 is rotated in the other direction with respect to the container 10, the button attachment member 19 fixedly attached to the stem 16 does not rotate, and the two ribs 20b are respectively shown in FIG. The operation button 20 is set to a mist-like diffuse flow ejection position by abutting against the positioning projection 19b of the button mounting member 19. (In FIG. 6, the operation button 20 is left as it is in FIG. 4, and the container 10 is shown in a rotated state.)
[0027]
Then, as shown in FIG. 7, the notch 19c of the button mounting member 19 faces a direction different from the position of the lateral hole 20a of the operation button 20, and the internal flow path 19a of the button mounting member 19 and the first ejection path A Block communication.
[0028]
Therefore, when the operation button 20 is pushed in at this mist-like diffuse flow ejection position, similarly, as shown in FIG. 8, the stem 16 is pushed down, the packing 17 is deformed, and the contents of the container 10 are communicated with the pressure of the injection material. The hole 16c is inserted into the internal flow path 16b of the stem 16 and discharged through the stem 16. Since the communication between the internal flow path 19a of the button mounting member 19 and the first ejection path A is blocked, It enters into the 2nd ejection path B of the operation button 20 from the internal flow path 19a of the button attachment member 19, passes through the spiral groove 21b on the top inner surface of the nozzle member 21, and diffuses in the form of a mist as a mist-like diffusion flow from the nozzle 21a. Can be erupted.
[0029]
In addition, although the case where it applied to the aerosol type ejector was demonstrated in the example mentioned above, it can apply similarly to a pump type ejector.
[0030]
【The invention's effect】
As described above, according to the present invention, the operation button is provided with the first ejection path and the second ejection path, and the operation button is attached to the button attachment member that is fixed to the stem, and the continuous linear flow ejection position. And the mist-like diffuse flow ejection position, and the communication is made by the notch provided in the button mounting member, or the communication by the notch is cut off to switch between the first ejection path and the second ejection path. Therefore, the number of parts can be reduced, the structure can be simplified, and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an essential part of an aerosol type ejector according to the present invention.
FIG. 2 is a perspective view of a button mounting member used in the ejector.
FIG. 3 is a side view showing an inner surface of a top portion of a nozzle member used in the ejector of FIG. 1;
4 is a cross-sectional view taken along line LL in FIG.
FIG. 5 is a state diagram when the operation button is pushed in at the continuous linear flow ejection position in the ejector of FIG. 1 and a continuous linear flow is ejected from the ejection port.
6 is a cross-sectional view taken along line LL in FIG.
FIG. 7 is a longitudinal sectional view when the operation button is rotated with respect to the container.
FIG. 8 is a state diagram when an operation button is pushed in at a mist-like diffusion flow ejection position and a mist-like diffusion flow is ejected from an injection port.
FIG. 9 is a partial longitudinal sectional view of a conventional ejector.
FIGS. 10A and 10B are cross-sectional views when the ejector is cut along the ejection passage, where FIG. 10A is a non-use state, FIG. 10B is a continuous linear flow ejection state, and FIG. 10C is a mist-like diffusion flow ejection state; Indicates.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Container 12 Injection valve apparatus 16 Stem 16b Internal flow path 18 Cover member 19 Button mounting member 19A Flange part 19B Shaft part 19a Internal flow path 19b Positioning protrusion 19c Notch 20 Operation button 20a Side hole 20b Rib 21 Nozzle member 21a Spout 21b Swirl Groove 22 Coma A First ejection path B Second ejection path

Claims (4)

In the ejector which pushes down the stem by pushing the operation button, discharges the contents of the container through the stem and ejects it from the nozzle of the operation button to the outside,
A cap-shaped nozzle member that forms a spiral groove on the inner surface of the top portion from the outer periphery toward the central nozzle is press-fitted into the button body, and a cylindrical piece is press-fitted into the nozzle member. A first ejection path that directly reaches the nozzle through the inside of the top without passing through the spiral groove on the operation button, and the second that reaches the nozzle through the spiral groove from between the nozzle member and the top. And a jet passage
Further, a button mounting member is fixed to the stem, and a shaft portion is formed on the button mounting member to form a notch by cutting out a part in the circumferential direction. In addition to providing an internal flow path that communicates, the operation button is rotatably attached around the shaft portion,
An internal flow path and the first ejection path and the continuous linear flow ejection position to enable ejection continuous linear flow from said nozzle hole communicating the of the button mounting member through a notch before Kibotan mounting member, the The communication between the internal flow path of the button mounting member and the first ejection path due to the notch is cut off, and a mist-like diffusion flow is ejected from the ejection port through the second ejection path from the internal flow path of the button mounting member. An ejector in which the operation button can be freely rotated to a mist-like diffuse flow ejection position. Wherein the button mounting member, and the flange portion for mounting the operation button formed by providing the front Symbol shank, ejector according to claim 1. The ejector according to claim 2 , wherein a positioning projection for positioning the operation button at the continuous linear flow ejection position or the mist-like diffuse flow ejection position is formed on the flange portion. The ejector according to claim 1, wherein the notch is formed at a tip of the shaft portion.

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