Structure for controlling soap discharging quantity of soap dispensing apparatus
A structure for controlling soap discharging quantity of soap dispensing apparatus includes a connector coupling with a liquid soap container by screwing that has a bottom housed in a sleeve. The sleeve has a pump housing on one side formed by an elastic pressure bulb. The sleeve has a discharge opening on the bottom and houses axially an upper valve and a lower valve that form a valve chamber therebetween. The tubular wall of the sleeve on the pump housing on an upper end of the lower valve has a hole. The tubular wall of the sleeve on the upper end of the upper valve has an upper hole. The upper hole can disperse pressure entering the valve chamber to make outlet of the valve chamber smaller thereby to reduce output quantity of the liquid soap. An action passage of vacuum suction force can also be formed to suck the liquid soap held on the bottom of the soap container into the valve chamber.
1. Field of the Invention
The present invention relates to a structure for controlling soap discharging quantity of soap dispensing apparatus and particularly to a soap dispensing apparatus that has a valve chamber and a pump housing divided by a partition which has an extra hole to adjust discharging liquid soap quantity according to different viscosity to improve utilization of the liquid soap.
2. Description of the Prior Art
Liquid or creamy detergents such as liquid soap or alcohol generally are held in a container which has an outlet coupling with a dispensing apparatus to discharge the liquid soap at a desired quantity. Reference of the liquid soap dispensing apparatus can be found in U.S. Pat. No. 4,168,020 as shown in
The liquid soap dispensing apparatus set forth above transmits alterations of the pressure or suction force of the pump housing 15 to the valve chamber 18 to control opening or closing of the upper valve 16 and lower valve 17 to supply the liquid soap. The hole 19 has to be formed at a desired diameter to transmit the pressure or suction force between the pump housing 15 and the valve chamber 18. However, the quantity of the liquid soap being squeezed cannot be controlled and adjusted at a desired quantity. In the event that the liquid soap has different viscosity, to adjust the discharge quantity as desired in not possible.
The liquid soap dispensing apparatus previously discussed has another shortcoming, namely the liquid soap is squeezed into the valve chamber through its own weight. In the event that the liquid soap is almost depleted or only a small amount remains, its weight is not sufficient to push flowing of the liquid soap. Hence even if the inlet of the valve chamber is open, the liquid soap still cannot flow into the valve chamber. As a result, the liquid soap cannot be fully utilized.
SUMMARY OF THE INVENTIONThe primary object of the present invention is to provide a structure for controlling soap discharging quantity of soap dispensing apparatus that has a valve chamber and a pump housing divided by a partition which has an extra hole to adjust discharging liquid soap quantity according to different viscosity to overcome the disadvantages of the conventional liquid soap dispensing apparatus.
Another object of the present invention is to provide a structure for controlling soap discharging quantity of soap dispensing apparatus that has a valve chamber and a pump housing divided by a partition which has an extra hole to channel liquid soap into the valve chamber even when the liquid soap is almost depleted or only a small amount remains thereby allows the liquid soap to be fully utilized.
To achieve the aforesaid objects, the structure for controlling soap discharging quantity of soap dispensing apparatus according to the invention includes a connector screwing on a liquid soap container and a duct on the bottom of the connector inserting into the top end of a sleeve. The sleeve has a seat on one side. The seat has an opening on one side sealed by an elastic pressure bulb to form a pump housing. The sleeve has a discharge opening on the bottom and an axial strut inside to couple with an upper valve and a lower valve. The upper valve has a top end in contact with the bottom end of the duct of the connector. The upper valve and the lower valve form a valve chamber between them. The tubular wall of the sleeve has holes on the bottom of the seat. There is a lower hole located on an upper end of the lower valve.
The invention includes a feature as follow: an upper hole is formed on the tubular wall on an upper end of the upper valve above the lower hole. The upper hole can disperse the pressure in the valve chamber during operation of the soap dispensing apparatus so that the outlet of the valve chamber becomes smaller to reduce output quantity of the liquid soap. The upper hole also provides an action passage for vacuum suction force so that when the liquid soap contained on the bottom of the container cannot be squeezed out by the gravity it still can be sucked into the valve chamber to be used.
Thus the upper hole in the soap dispensing apparatus can deliver a desired liquid soap output quantity according to different viscosity of the liquid soap to overcome the shortcomings of the conventional liquid soap dispensing apparatus and fully use the liquid soap and increase use duration.
The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.
Referring to
Referring to
The invention differs from the conventional liquid soap dispensing apparatus mainly by adding the upper hole 54 on the seat 35 that is located on the upper end of the upper valve 51. The upper hole 54 aims to reduce the pressure in the valve chamber 53. When the pump housing 39 is compressed by an external force, the upper hole 54 disperses a portion of the pressure so that the pressure passing through the lower hole 55 and acting on the upper and lower valves 51 and 52 is lower. As a result, the outlet gap between the edge of the lower valve 52 and the tubular wall 57 is smaller and the amount of discharging liquid soap also is smaller. When the upper hole 54 has a greater opening size, the pressure being dispersed also is greater. Hence the pressure applying to the valve chamber 53 is smaller and the amount of the liquid soap 6 being discharged also is smaller. Thus the liquid soap being dispensed can be reduced to increase the supply duration of the liquid soap.
The upper hole may have different size to deliver different amount of liquid soap. Table 1 below shows test results of the upper hole of varying sizes for dispensing liquid soap of a given viscosity. The test results indicate that the existence of the upper hole can effectively reduce output amount of the liquid soap. Through different sizes of the upper hole the output amount of the liquid soap can be adjusted to meet different requirements.
Refer to
Refer to
Refer to
While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.
Claims
1. A structure for controlling soap discharging quantity of soap dispensing apparatus, comprising a connector coupling with a liquid soap container and a sleeve which has a top end to house the bottom of the connector; the sleeve having one side coupled with an elastic pressure bulb to form a pump housing and housing axially an upper valve and a lower valve that form a valve chamber therebetween, the tubular wall of the sleeve between the pump housing and the valve chamber having a hole on an upper end of the upper valve, the valve chamber having an outlet which is opened through the hole when the pump housing receives a pressure to allow liquid soap to be discharged through a discharge opening on the bottom of the sleeve; the valve chamber having an inlet to receive the liquid soap into the valve chamber;
- wherein the tubule wall of the sleeve has an upper hole located above the hole and the upper valve to reduce output quantity of the liquid soap.
2. The structure for controlling soap discharging quantity of claim 1, wherein the hole is a pair of slots symmetrical on a left side and a right side.
3. The structure for controlling soap discharging quantity of claim 1, wherein the hole is formed in a desired shape and arranged in a juxtaposed manner.
4. The structure for controlling soap discharging quantity of claim 1, wherein the upper hole is a round aperture.
5. The structure for controlling soap discharging quantity of claim 1, wherein the upper hole is a single aperture formed in a desired shape.
6. The structure for controlling soap discharging quantity of claim 1, wherein the upper hole includes a plurality of apertures arranged in a juxtaposed manner.
Type: Application
Filed: Dec 28, 2006
Publication Date: Jul 3, 2008
Inventor: Jan-Sun Chen (Taipei City)
Application Number: 11/646,295
International Classification: B65D 37/00 (20060101);