JPH01501533A - aerosol valve - Google Patents

Abstract

An aerosol valve comprising a mounting cup (10), a gasket (14) having a central opening, a valve housing (12), a valve stem (20) and a valve body (16), wherein the valve stem and valve body move within the valve housing in response to pressure on the valve stem, the improvement comprising a valve body having at least one upstanding wall (26) defining a recess (22) in the valve body and having a slot (21) extending from the top shoulder of the upstanding wall which slot communicates with the interior of the container when the valve is actuated; a valve stem having a longitudinal opening therethrough and a member (24) that frictionally and releasably engages within the valve body recess, said valve stem further having an orifice (42) aligned with the longitudinal opening of the valve stem, which communicates at one side with the slot in the recess of the valve body and at the other side with the longitudinal opening in the valve stem; and the central opening of the gasket sealing the slot defined by the upstanding wall of the valve body when the valve is in a closed position.

Description

[Detailed description of the invention] name of invention aerosol valve 〔Technical field〕 The present invention relates to valves for pressurized packages, commonly referred to as aerosol packages. Ru.

[Background of the invention]

Aerosol packages typically have an actuator located in the neck of the container and located at one end of the valve body. It is equipped with a valve unit that is opened by finger pressure applied to the tuator. This valve unit The product flows into the hollow valve body (product conduit) when it leaves the gasket. It has a movable valve body and a cooperating hollow valve stem.

For some products, such as paint, clean the product conduit if it dries and becomes clogged. It is desirable that the valve body can be separated from the valve body so that the valve body can be separated from the valve body. The valve body mentioned above is To enable this, one end of the valve body must be molded integrally with the valve actuator. The valve body can be separated from the valve body by pulling the actuator.

The other end of the valve body is connected to a movable valve body located below the elastic gasket.

The valve stem passes through the center hole of the elastic gasket. This gasket is located in the closed position of the valve. sealing the product discharge orifice of the valve body when in position.

By pressing the valve body, the product orifice of this valve body opens and drains the product from the container. let

In particular, the aforementioned aerosol valves are commonly referred to as mounting cups that are fixed to the vessel valve. It is equipped with a container lid.

Within the upright central portion of the mounting cup, commonly referred to as the pedestal, an elastic gasket is placed at the top. The placed valve housing is fixed by caulking K. The gasket is the valve housing forming a seal between the ring and the mounting cup. The valve body and valve stem are inside the housing. A reciprocating valve opening/closing member is arranged. Press this valve body and disc with your fingers. Release pressurized product into a release orifice located within an actuator that can It has a communication path.

For the aerosol valve mentioned above, the aerosol industry prefers to mold the valve body integrally with the valve body. It is generally called a ``female'' valve, unlike a ``male'' valve. U.S. Patent No. 3, No. 033,473, No. 3,061,203, No. 3,074,601 and The specifications of No. 3,209.960 describe “female” aerosol valves. It is listed. U.S. Pat. No. 2,631,814 describes a "male" aerosol. The valve is described here.

In addition, conventional aerosol valves require the product orifice within the valve body to be Side action J-forming process is carried out on the wall of the valve body in the horizontal direction. formed by radial bins extending to . Due to the existence of this "side action" However, it is necessary to remove the dust before ejecting the molded part), thus reducing the time required for the molding operation. causing delays.

In addition, the orifice dimensions commonly used in aerosol valves include "side-action" This often causes the tube to break, resulting in a stoppage in molding operations.

Furthermore, in conventional aerosol valves, the center hole of the gasket is connected to the product orifice of the valve body. radially sealed.

This sealing of the valve body orifice when the valve is closed is made by gravity returning inside the hollow valve body. This prevents the product from moving past the valve stem orifice, thus reducing residual product within this hollow valve body. The product dries out and the passages inside the valve body become clogged.

It is an object of the present invention to provide an aerosol valve that eliminates the above-mentioned drawbacks of conventional valves. It is in.

[Summary of the invention]

Generally, the present invention provides a gasketed movable valve body positioned within a valve housing. In an aerosol valve with a rod, at least one tube forming a groove inside the valve body an upright wall extending from the upper shoulder of the upright wall to the container when said aerosol valve is actuated; A valve body with a large diameter that communicates with the inside, and a vertical through hole and a groove in the valve body. A member that is releasably fitted with friction and an oriice that is aligned with the vertical through hole. and a valve body having a valve body, one end of which is connected to the slot of the valve body cavity. The other end is connected to the valve body orifice, and the other end is connected to the center hole of the gasket. When the valve is in the closed position, the slot partitioned by the upright wall of the valve body is sealed. An aerosol valve is characterized in that it is configured to:

In particular, as a preferred embodiment, the aerosol valve of the present invention has a valve stem orifice in the valve body. A ridge is formed below the surface.

Brief description of the drawing FIG. 1 is a longitudinal sectional view of one embodiment of the valve of the present invention in the closed position.

FIG. 2 is a longitudinal sectional view of the valve of FIG. 1 in the open position.

Figure M3 is an enlarged longitudinal sectional view of the valve body of the valve in Figures 1 and 82.

FIG. 4 is a bottom view of FIG. 3.

FIG. 5 is an enlarged longitudinal sectional view of the valve body of the valve of FIGS. 1 and 82.

FIG. 6 is a plan view of FIG. 5.

FIG. 7 is an enlarged longitudinal sectional view of the valve body and the valve body of FIG. 1.

FIG. 8 is an enlarged perspective view of the valve body of FIGS. 1, 82, and 5 to 7.

By way of example, a mounting cup 10 is shown in the accompanying drawings. Mounting cup 1 0, the valve housing 12 and gasket 14 are fixed by caulking. Howe A valve body 16 having a recess 22 is disposed within the ring 12. Valve body 16 is a spring 18 is energized toward Shigasubutt 14. Housing 12 as shown A regular dip tube 46 is attached to the bottom of the tube. The valve stem 20 is recessed in the upper part of the valve body 16. Frictionally insert the depending extension 24 of the valve stem 20 into the groove 22 (detailed in FIG. 5). The device can be installed by fitting it through the device. Upright arcuate wall 26 (detailed in Figure 8) ) forms the upper part of the depression 22 and forms the groove hole 21 .

Below the groove 21, a groove 32 is formed in the side wall of the valve body groove 22, and a groove 32 is formed in the side wall of the valve body <it groove 22. 4 is formed. The groove 32 is located below the valve body 20 and within the valve body recess 22. It communicates with a space 34, that is, a reservoir. An annular recess is provided in the upper shoulder portion 40 of the valve body 16. It is a 50t-arrangement.

Valve body 20 has an orifice 42 communicating with space 34. The orifice 42 is according to the present invention. In the preferred embodiment, it acts as a product flow control orifice. Base of valve body 20 A recess 30 is formed in the shoulder portion 28f.

When the valve body 16 and the valve body 20 are in an assembled relationship, the arcuate wall 26 abuts the shoulder 28. Barrel. The outer wall 48 of the recess 30 of the valve body 20 is tapered.

An actuator button 36 is attached to the upper portion of the valve stem 20. Valve body 20 An annular projection or lip 38 is formed on the bottom. Attach the valve stem 20 to the lip 38. Fix the valve body 20 to the valve button 36 and remove it from the valve body 16. Make it easier.

In the closed position of the aerosol valve shown in FIG. The grooves exert a sealing action on the annular shoulder 40 and the upright arcuate wall 26 of the valve body 16. To prevent products from being distributed after passing 21.

In the open position of this valve shown in FIG. 2, pressing force is applied to the actuator 36 to 0 and valve body 16 to expose the slot 21t to the pressurized contents of the container. The contents of this container are then passed through slot 21, groove 32, space 34 and orifice 42. to the discharge orifice 44.

The valve body of the present invention and the product passageway formed in the valve body require a “side action” molding. Not required. Further, an orifice 42 is arranged on the discharge side of the space 34, The valve body product on the discharge side of the orifice 42 flows back into the space 34) and thus the valve stem meat product. It functions to keep passageways from drying out and becoming clogged. Note that the discharge side of the space 34 The orifice 42t should be placed in the space when the aerosol valve is closed. 34 resulting in propellant residue. This residue is removed from valve stem and actuator manufacturing. Eliminating residual product from the product aisle helps prevent or reduce clogging.

When assembling multiple valve parts, the parts consisting of the valve stem, disc, spring and gasket must be assembled. First, make the bus assembly. Such a subassembly is a gasket to the valve body. It is important to properly orient and maintain the position of the head against the mounting cup. Prior to permanent positioning of the gasket by crimping the clear valve against other parts. The aforementioned subassemblies and their Rapid assembly of other valve components can be performed.

Valve body-valve body fitting part that facilitates gasket placement and position stabilization on the valve body The structure of is clearly shown in FIG. When assembling this valve, remove the gasket 14 from the valve body. 20 and finally hits the shoulder 40 of the valve body 16. arcuate wall 26 The transition of the gasket 14 to the upper seat shoulder 40 of the valve body 20 It becomes much easier.

Furthermore, the height of the upright arcuate wall 26 is made larger than the gasket thickness, so that the propellant can be contained in the container. The upper shoulder of the arcuate wall 26 does not fall under the gasket 14 during the pressure application. It is better to do so.

Part reference numbers used in the explanation of Figures 1 and 2 are the same parts as in Figures 3 to 8. The same is true for .

FIG, 4 FIG, 6 international search report

Claims (15)

[Claims] 1. mounting cup, gasket with center hole, valve housing, valve stem, valve the valve stem and the valve body in response to a pressing force applied to the valve stem. In an aerosol valve unit configured to move within a valve housing, the inside of the valve body is at least one upright wall forming a recess in the section; a slot extending from the aerosol valve unit and communicating with the interior of the container when the aerosol valve unit is actuated; , provided in the valve body, with a vertical through hole and a recess in the valve body that can be released with friction. and an orifice that is aligned with the vertical through hole. , the valve stem is provided with a recess in the valve body, the recess in the recess at one end; communicating with the slot and at the other end communicating with the orifice of the valve stem; When the aerosol valve unit is in the closed position due to the center hole of the gasket and the groove formed by the upright wall of the valve body is sealed. Characteristic aerosol valve unit. 2. A recess in the valve body extends from an upright wall of the valve body to form an extending recess. said extending recess comprises at least one groove provided in an upright wall of said valve body; , the miso is connected to the slot at one end thereof, and at the other end thereof. The aerosol valve unit according to claim 1, wherein the aerosol valve unit communicates with the orifice of the valve stem. knit. 3. a space or reservoir between the bore of the valve body and the orifice of the valve stem; The aerosol valve unit according to claim 1, wherein the aerosol valve unit comprises: 4. a space between the elongated recess of the valve body and the orifice of the valve stem; 3. The aerosol valve unit according to claim 2, wherein the aerosol valve unit forms a reservoir. 5. frictionally releasably engaging the valve stem within the elongated recess of the valve body; 3. The aerosol valve unit according to claim 2, further comprising: 6. There is a space between the recess of the valve body and the orifice of the valve stem. The aerosol valve unit according to claim 5, further comprising a reservoir. 7. Claim wherein the slot is formed by an arcuate upright wall forming a lateral slot. 1. The aerosol valve unit according to 1. 8. The groove of the valve body is arranged radially outwardly of the groove of the valve body. 3. The aerosol valve unit according to claim 2, wherein the aerosol valve unit is arranged to be aligned with the aerosol valve unit. 9. The groove of the valve body is formed into a groove radially outward of the groove of the valve body. 7. The aerosol valve unit according to claim 6, wherein the aerosol valve unit is arranged to be aligned with the aerosol valve unit. 10. The orifice of the valve stem is connected to the product flow control orifice between the valve body and the valve stem. The aerosol valve unit according to claim 1, wherein the aerosol valve unit is a valve. 11. The orifice of the valve stem is connected to the product flow control orifice between the valve body and the valve stem. The aerosol valve unit according to claim 2, wherein the aerosol valve unit is a valve. 12. The orifice of the valve stem is connected to the product flow control orifice between the valve body and the valve stem. 4. The aerosol valve unit according to claim 3, wherein the aerosol valve unit is a valve. 13. The orifice of the valve stem is connected to the product flow control orifice between the valve body and the valve stem. The aerosol valve unit according to claim 4, wherein the aerosol valve unit is a valve. 14. a recess is formed in the valve stem to receive and mate with the upright wall of the valve body; The aerosol valve unit according to claim 1, comprising: 15. A tape is provided on the outer wall of the recess of the valve stem downward and inward toward the valve body. 14. The aerosol valve unit according to claim 13, further comprising an aperture.