Nozzle component

Abstract

To provide an injection port member which enables reduction of pressure loss compared to conventional injection port members.SOLUTION: An injection port member 1 of the invention includes: a lid member 10 having a bottom plate 12 on which an injection port 11 is open, and a cylindrical part 13 extending from a peripheral edge of the bottom plate 12 in a plate thickness direction; a housing 6 having an insertion port 7 where the lid member 10 is inserted and fixed; an insertion part 9 which is inserted into the lid member 10; and a passage 5 which is disposed in the housing 6 and communicates with the insertion port 7. A fluid flowing into the passage 5 can be injected from the injection port 11 through a space between the lid member 10 and the insertion part 9. An inner peripheral surface of the cylindrical part 13 or an outer peripheral surface of the insertion part 9 is formed in an inclined shape in which a cross sectional area of a space between the cylindrical part 13 and the insertion part 9 gradually increases or decreases toward the injection port 11 side.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to an injection port member that is attached to the mouth portion of a container body and is used to spray an internal solution within the container body.

Background Art

[0002] Conventionally, when spraying an internal solution from an aerosol container or a pump container, an injection port member attached to the mouth portion of those container bodies is known (for example, see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide an injection port member that can reduce pressure loss more than conventionally and can apply a high pressure to the injection port.

Means for Solving the Problems

[0005] To achieve the above object, the injection port member of the present invention includes a lid member having a bottom plate with an injection port opened and a cylindrical portion extending in the plate thickness direction from the periphery of the bottom plate, a housing having an insertion port into which the lid member is inserted and fixed, an insertion portion inserted into the lid member, a flow path disposed in the housing and communicating with the insertion port, and is an injection port member capable of injecting the fluid flowing into the flow path from between the lid member and the insertion portion through the injection port, The inner circumferential surface of the cylindrical portion, or the outer circumferential surface of the insertion portion, is formed in an inclined shape such that the cross-sectional area of ​​the space between the cylindrical portion and the insertion portion gradually increases or decreases toward the nozzle side. And so, At least one of the inner circumferential surface of the cylindrical portion and the outer circumferential surface of the insertion portion has a polygonal shape in which the cross-section parallel to the bottom plate has sharp corners or rounded corners. The configuration is such that there is a difference in the distance between the cylindrical portion and the insertion portion between the corner portion and the side portion of the polygon. It is characterized by the following:

[0006] According to the present invention, since the inner circumferential surface of the cylindrical part or the outer circumferential surface of the insertion part is formed in an inclined shape, a relatively wide fluid flow path can be secured between the cylindrical part and the insertion part, thereby reducing pressure loss compared to conventional designs. Furthermore, because the inner circumferential surface of the cylindrical part or the outer circumferential surface of the insertion part is inclined, a relatively wide fluid flow path can be secured between the cylindrical part and the insertion part, allowing fluid to accumulate in this flow path. As a result, the fluid accumulated in this flow path is guided to the injection port without passing through relatively narrow passages such as the discharge passage of the pump, thus enabling high pressure to be applied to the injection port.

[0007] Furthermore, in the present invention, At least one of the inner circumferential surface of the cylindrical portion and the outer circumferential surface of the insertion portion has a polygonal shape in which the cross-section parallel to the bottom plate has sharp corners or rounded corners. The configuration is such that there is a difference in the cross-sectional area of ​​the space between the cylindrical portion and the insertion portion between the corner portion and the side portion of the polygon. It is being done.

[0008] With this configuration, at least one of the inner circumferential surface of the cylindrical part and the outer circumferential surface of the insertion part is configured such that the cross-section parallel to the bottom plate is polygonal or has rounded corners. The difference in cross-sectional area of ​​the space between the cylindrical part and the insertion part between the corners and edges of the polygon defines multiple flow paths. As a result, fluid can flow between the cylindrical part and the insertion part without providing grooves for fluid flow on the inner circumferential surface of the cylindrical part and the outer circumferential surface of the insertion part. Therefore, the shape of the molds forming the cylindrical part and the insertion part can be simplified, and manufacturing costs can be reduced.

[0009] Furthermore, in the present invention, the inclined shape can also be formed by inclining the outer circumferential surface of the insertion portion such that the cross-sectional area of ​​the space between the cylindrical portion and the insertion portion gradually increases toward the nozzle side.

[0010] According to the present invention, since the outer surface of the insertion portion is formed in an inclined shape, a relatively wide fluid flow path can be secured between the cylindrical portion and the insertion portion, thereby reducing pressure loss compared to conventional designs. Furthermore, because the outer surface of the insertion portion is inclined, a relatively wide fluid flow path can be secured between the cylindrical portion and the insertion portion, fluid can be accumulated in this flow path. As a result, the fluid accumulated in this flow path is guided to the injection port without passing through relatively narrow passages such as the discharge passage of the pump, thus enabling high pressure to be applied to the injection port. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a perspective view showing a spray container having a nozzle member according to a first embodiment of the invention. [Figure 2] Figure 2 is an explanatory diagram showing a magnified view of the nozzle member of Figure 1, with a partial cross-section. [Figure 3] Figure 3 is a cross-sectional view showing an enlarged view of the lid member in Figure 1. [Figure 4] Figure 4 is a perspective view showing an enlarged view of the lid member in Figure 1. [Figure 5] Figure 5 is a cross-sectional view showing the distance between the lid member and the insertion part in Figure 1. [Figure 6] Figure 6 is an enlarged cross-sectional view showing the lid member of the nozzle member according to the second embodiment of the invention. [Figure 7] Figure 7 is a perspective view showing an enlarged view of the lid member in Figure 6. [Figure 8] Figure 8 is a cross-sectional view showing the distance between the lid member and the insertion part in Figure 6. [Modes for carrying out the invention]

[0012] [First Embodiment] Referring to FIGS. 1 to 5, a first embodiment of the injection port member of the invention will be described. Referring to FIG. 1, the injection port member 1 of the first embodiment is attached to the mouth portion 3a of the bottomed cylindrical container body 3 of the spray container 2, and sprays the internal solution as the fluid filled in the container body 3.

[0013] Referring to FIG. 2, the mouth portion 3a includes a pump 4 with a cylindrical piston 4a that can move forward and backward protruding. The injection port member 1 is fixed to the piston 4a. When the piston 4a is pushed in, the pump 4 discharges the internal solution (fluid) stored in the pump 4 from the tip of the piston 4a. Also, when the piston 4a is pushed out from the state where it is pushed into the pump 4 so as to protrude by a spring (not shown) in the pump 4, the internal solution in the container body 3 is sucked into the pump 4.

[0014] The injection port member 1 includes a housing 6 having a cylindrical flow path 5 into which the tip of the piston 4a is inserted and fixed. The housing 6 includes an inner peripheral surface 7a and a closing surface 7b that define an insertion port 7 opened in a direction orthogonal to the flow path 5. The closing surface 7b is configured to close the flow path 5 side of the inner peripheral surface 7a. A communication hole 8 communicating with the flow path 5 is formed in the upper end portion of the closing surface 7b. Through this communication hole 8, the internal solution (fluid) in the flow path 5 is supplied into the insertion port 7.

[0015] A cylindrical insertion portion 9 protruding from the closing surface 7b in the opening direction is provided in the insertion port 7. A bottomed cylindrical lid member 10 is press-fitted and fixed to the insertion port 7. The insertion portion 9 is inserted into the lid member 10. The lid member 10 includes a disk-shaped bottom plate 12 with a conical frustum-shaped injection port 11 that gradually decreases in diameter toward the outside and an opening, and a cylindrical portion 13 extending in the plate thickness direction from the periphery of the bottom plate 12.

[0016] Referring to Figure 3, the tip of the insertion portion 9 is provided with a disc-shaped protrusion 9a that projects toward the front. The inner circumferential surface of the cylindrical portion 13 of the lid member 10 is formed in a tapered shape that slopes downwards so that the thickness gradually increases toward the bottom plate 12. In this way, the inner circumferential surface of the cylindrical portion 13 is formed in a tapered shape relative to the outer circumferential surface of the cylindrical insertion portion 9, so that the cross-sectional area of ​​the space between the cylindrical portion 13 and the insertion portion 9 gradually decreases toward the nozzle 11.

[0017] Referring to Figure 4, the inner circumferential surface of the cylindrical portion 13 is configured to have a cross-section of a square shape with rounded corners. As a result, as shown in Figure 5, a relatively large space X can be formed between the cylindrical insertion portion 9 and the cylindrical portion 13. Since the internal solution (fluid) can be properly flowed using this space X, there is no need to form grooves on the inner circumferential surface of the cylindrical portion 13 or the outer circumferential surface of the insertion portion 9 to serve as pathways for the internal solution. Therefore, the shape of the mold (not shown) for manufacturing the lid member 10 and the housing 6 can be simplified, and manufacturing costs can be reduced. The flow path 5 and the insertion portion 9 are integrally formed from the same material as the housing 6.

[0018] Referring to Figure 4, the inner surface of the bottom plate 12 (the surface on the flow path 5 side) is provided with four swirling grooves 14 extending radially from the injection port 11. The swirling grooves 14 are connected to the injection port 11 eccentrically on one side in the circumferential direction, and the internal solution (fluid) that passes through the swirling grooves 14 and reaches the injection port 11 is injected in a swirling motion. The disc-shaped protrusions 9a are configured such that their outer edges are positioned radially inward from the radially outer ends of the swirling grooves 14, so as not to obstruct the flow of the internal solution into the swirling grooves 14.

[0019] Referring to Figure 3, the outer circumferential surface of the cylindrical portion 13 is provided with an annular projection 15 that extends radially outward. The outer circumferential surface of the cylindrical portion 13 is composed of a large-diameter portion 16 on the bottom plate 12 side and a small-diameter portion 17 on the flow path 5 side, with the projection 15 as the boundary. The annular side surface of the projection 15 on the small-diameter portion 17 side is inclined to gradually decrease in diameter toward the small-diameter portion 17.

[0020] According to the nozzle member 1 of the first embodiment, since the inner circumferential surface of the cylindrical portion 13 is formed in a tapered shape, a relatively wide passage for the internal solution (fluid) can be secured between the cylindrical portion 13 and the insertion portion 9, thereby reducing pressure loss compared to conventional designs and enabling finer atomization. Furthermore, by making the inner circumferential surface of the cylindrical portion 13 tapered, a relatively wide flow path for the internal solution (fluid) can be secured between the cylindrical portion 13 and the insertion portion 9, allowing the internal solution (fluid) to accumulate in this flow path. As a result, the internal solution (fluid) accumulated in this flow path is guided to the nozzle 11 without passing through relatively narrow passages such as the discharge passage provided in the piston 4a of the pump 4, thus enabling high pressure to be applied to the nozzle 11.

[0021] Furthermore, the inner circumferential surface of the cylindrical portion 13 is configured as a polygonal shape with rounded corners on a cross-section parallel to the bottom plate 12, defining multiple spaces X. This results in a difference in the distance between the cylindrical portion 13 and the insertion portion 9 between the corners and edges of the polygonal shape. This allows the internal solution (fluid) to flow appropriately between the cylindrical portion 13 and the insertion portion 9 without the need to provide grooves for the internal solution (fluid) on the inner circumferential surface of the cylindrical portion 13 and the outer circumferential surface of the insertion portion 9. This simplifies the shape of the molds that form the cylindrical portion 13 and the insertion portion 9, thereby reducing manufacturing costs.

[0022] [Second Embodiment] Referring to Figures 6 to 8, the nozzle member 1 of the second embodiment of the invention will be described. Referring to Figure 6, in the nozzle member 1 of the second embodiment, the insertion portion 9 is formed in a frustoconical shape that gradually tapers toward the tip. As a result, the cross-sectional area of ​​the space between the cylindrical portion 13 and the insertion portion 9 is configured to gradually decrease toward the nozzle 11 side. In addition, the inner circumferential surface of the cylindrical portion 13 of the second embodiment is provided with two inner circumferential grooves 18 that extend in the axial direction.

[0023] Referring to Figure 7, the swivel groove 14 in the second embodiment is composed of two swivel grooves 14 connected to the inner circumferential groove 18. The swivel groove 14 in the second embodiment is configured to gradually narrow in width toward the nozzle 11. The nozzle 11 in the second embodiment is formed in a frustoconical shape that gradually decreases in diameter toward the outside. The inclination angle of the nozzle 11 in the second embodiment is set steeper than the inclination angle of the nozzle 11 in the first embodiment. The other components of the nozzle member 1 and spray container 2 in the second embodiment are configured the same as those of the first embodiment.

[0024] In the second embodiment of the nozzle member 1, since the outer circumferential surface of the insertion portion 9 is formed in a tapered shape, as shown in Figure 8, not only the inner circumferential groove 18 but also an annular passage is defined between the cylindrical portion 13 and the insertion portion 9, allowing for a relatively wide passage for the internal solution between the cylindrical portion 13 and the insertion portion 9, thereby reducing pressure loss compared to conventional designs and enabling finer atomization. Furthermore, by tapering the outer circumferential surface of the insertion portion 9, a relatively wide flow path for the internal solution (fluid) is secured between the cylindrical portion 13 and the insertion portion 9, allowing the internal solution (fluid) to accumulate in this flow path. As a result, the internal solution (fluid) accumulated in this flow path is guided to the nozzle 11 without passing through relatively narrow passages such as the discharge passage provided in the piston 4a of the pump 4, thus allowing high pressure to be applied to the nozzle.

[0025] [Other embodiments] In both embodiments, a nozzle member 1 equipped with multiple swivel grooves 14 was described, but the nozzle member of the invention is not limited to this, and there may be one, multiple, or none of the swivel grooves. Furthermore, in the first embodiment, the inner circumferential surface of the cylindrical portion 13 was described as tapered, and in the second embodiment, the outer circumferential surface of the insertion portion 9 was described as tapered, but the nozzle member of the invention is not limited to this, and at least one of the inner circumferential surface of the cylindrical portion and the outer circumferential surface of the insertion portion may be inclined so that the space between the cylindrical portion and the insertion portion gradually increases or decreases. Furthermore, in both embodiments, a case in which the entire inner circumferential surface of the cylindrical portion 13 or the entire outer circumferential surface of the insertion portion 9 is tapered was described, but the inclined shape of the invention is not limited to this, and for example, a part of the inner circumferential surface of the cylindrical portion or a part of the outer circumferential surface of the insertion portion may be inclined, and similar effects can be obtained by this as well.

[0026] Furthermore, although the first embodiment described a cylindrical portion 13 with a square shape with rounded corners on its inner surface, the nozzle member of the invention is not limited to this, and the inner surface of the cylindrical portion may be a polygon other than a square, such as a triangle, pentagon, or hexagon. It may also be a polygon with sharp corners instead of rounded corners. In addition, the outer surface of the insertion portion may be configured as a polygon or a polygon with rounded corners.

[0027] Furthermore, although both embodiments describe a configuration in which the flow path 5 and the insertion portion 9 are integrally formed from the same material as the housing 6, the nozzle member of the invention is not limited to this configuration, and the flow path, insertion portion, and housing 6 may be molded separately. Also, although both embodiments describe a configuration in which the nozzle member 1 is connected to the piston 4a, the nozzle member of the invention does not have to be connected to the piston, and as long as it is configured so that the internal solution (fluid) such as lotion or medicine discharged from the pump is guided into the flow path 5, a separate operating unit for discharging from the pump may be provided. [Explanation of symbols]

[0028] 1. Nozzle Member 2 Spray container 3. Container body 3a Mouth 4 pumps 4a Piston 5 channels 6 cabinets 7 Insertion slot 7a Inner surface 7b Occlusion surface 8 Communication hole 9 Insertion part 9a Convex part 10 Lid member 11 Nozzle 12 Bottom plate 13. Cylindrical part 14 Swivel groove 15 Overhang 16 Large diameter section 17 Small diameter section 18. Inner circumferential groove (second embodiment) X space

Claims

1. A lid member having a bottom plate with an opening for spraying and a cylindrical portion extending in the thickness direction from the periphery of the bottom plate, A housing having an insertion opening into which the aforementioned lid member is inserted and fixed, The insertion portion is inserted into the lid member, A flow path is located inside the housing and communicates with the insertion opening, A nozzle member comprising, which is capable of injecting fluid that has flowed into the flow path through the gap between the lid member and the insertion portion from the nozzle, At least a portion of the inner circumferential surface of the cylindrical portion or the outer circumferential surface of the insertion portion is formed in an inclined shape such that the cross-sectional area of ​​the space between the cylindrical portion and the insertion portion gradually increases or decreases toward the nozzle side. At least one of the inner circumferential surface of the cylindrical portion and the outer circumferential surface of the insertion portion has a polygonal shape in which the cross-section parallel to the bottom plate has sharp corners or rounded corners. The nozzle member is characterized in that it is configured such that there is a difference in the distance between the cylindrical portion and the insertion portion between the corner portion and the edge portion of the polygon.

2. The nozzle member according to claim 1, The nozzle member is characterized in that the inclined shape is formed by inclining the outer circumferential surface of the insertion portion such that the cross-sectional area of ​​the space between the cylindrical portion and the insertion portion gradually increases toward the nozzle side.

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