JP3583344B2 - Liquid discharge device for liquid container - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a liquid discharging device for a liquid container such as an electric water heater.
[0002]
[Prior art]
A conventional liquid discharge device in an electric water heater or the like generally includes a normally-closed open / close valve in the middle of a liquid discharge passage, and a user presses down a discharge button engaged with the open / close valve with a fingertip. Is released, and the liquid pressurized by the pump driven at the same time as the depression is discharged to the outside (for example, see Japanese Utility Model Registration No. 2593732).
[0003]
The above-mentioned on-off valve opens the valve hole away from the valve seat according to the magnitude of the stroke of pushing down the discharge button. Therefore, the discharge amount of the liquid is adjusted by the pressing amount when the user presses down the discharge button with the fingertip.
[0004]
[Problems to be solved by the invention]
However, it is often difficult for the user to adjust the stroke of pushing down the ejection button with the fingertip. In particular, when a small amount is desired to be ejected, a delicate force adjustment is required. Sometimes.
[0005]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid discharge apparatus that can easily and accurately adjust a discharge flow rate.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a normally closed on-off valve in the middle of a liquid discharge passage, opens the on-off valve by pressing a discharge button engaged with the on-off valve, and opens the container. A liquid discharging device for a liquid container in which a pressurized liquid is discharged to the outside inside a main body, wherein the discharging button is provided with an adjusting device for variably restricting the size of a press-down stroke. It is.
[0007]
According to the above configuration, the user sets a stroke size according to a desired discharge amount by the adjusting device before pressing down the discharge button, and then presses down the discharge button. Then, the pressing stroke becomes a fixed size regulated by the adjusting device, and a desired discharge amount can be obtained.
[0008]
The above-mentioned discharge button is swingably supported in a vertical direction by a hinge portion provided at one end thereof, and the above-mentioned adjusting device is constituted by a guide member and a stroke limiting member. A guide surface along the direction including the hinge portion is provided, and the stroke restricting member is guided by the guide surface, and a regulating protrusion provided on the stroke restricting member is provided with a required gap between the regulating protrusion and the lower surface of the discharge button. In this case, a protruding configuration can be adopted.
[0009]
According to the above configuration, the stroke of the ejection button can be changed by changing the position of the restricting projection with respect to the hinge portion.
[0010]
The clearance between the lower surface of the discharge button and the restricting protruding piece may be configured to be relatively larger on the hinge portion side than on the free end side of the discharge button. With such a configuration, the amount of change in the stroke of the discharge button increases as the position of the regulating projection moves toward the hinge.
[0011]
In addition, as a more specific configuration, a beak portion protruding forward is provided at the upper portion of the container main body, and a hinge portion of the discharge button is attached to a lower surface of the beak portion, and a pressing portion of the discharge button is attached to the upper portion. It is fitted into the hole provided in the plate from below, an adjustment hole is provided along one side of the hole, and guide plates are provided on both sides of the adjustment hole. An inclined guide side having an angle θ is formed, a guide member of the adjusting device is attached at a fixed gap from the inclined guide side, and the stroke limiting member is slid into a gap between the inclined guide side and the guide member. It is possible to adopt a configuration of freely fitting.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to an electric water heater shown in the accompanying drawings. As shown in FIG. 1A, the electric water heater has a liquid discharge passage 2 connected to a liquid container inside a container body 1 via a discharge pump. The upper end of the liquid discharge passage 2 reaches a discharge port 4 through a beak portion 3 provided to protrude forward from an upper portion of the container body 1, and the discharge port 4 is provided in an opening provided in a lower plate of the beak portion 3. 5 is on. A liquid ejection device 7 is provided inside the above-mentioned beak portion 3 and on an upper plate 6 which is slightly inclined below the beak portion 3.
[0013]
The liquid discharge device 7 includes a valve device 8 provided in the middle of the discharge passage 2, a discharge button 9 attached to the upper plate 6, and an adjusting device 11.
[0014]
The valve device 8 has an on-off valve 14 inserted from below into a valve hole 13 of a valve seat 12 provided inside the discharge passage 2, and a spring receiving protrusion 15 provided inside the liquid discharge passage 2, The on-off valve 14 is urged to a normally closed state by a coil spring 16 interposed between the on-off valves 14. The valve stem 17 of the on-off valve 14 projects outside through the guide portion 18 of the liquid discharge passage 2. The protruding portion is covered with a rubber seal cap 19, and the lower end of the seal cap 19 is fitted around the guide portion 18 to seal the liquid discharge passage 2.
[0015]
The discharge button 9 is provided with a hinge portion 21 protruding left and right at a front end portion thereof (see FIG. 4). The hinge portion 21 can swing vertically in a hinge receiver 23 provided on the lower surface of the upper plate 6. Attached to. The pressing portion 24 of the discharge button 9 has an oval shape, and is fitted into the oval hole 22 provided behind the hinge receiver 23 from below with a margin. A projection 25 protruding downward is provided on the lower surface of the tip (ie, free end) of the pressing portion 24 of the discharge button 9, and the lower end of the projection 25 is in contact with the top of the seal cap 19. With the projection 25 in contact with the top of the seal cap 19, the ejection button 9 is stopped at a fixed inclination angle, and the pressing portion 24 exposed from the oblong hole 22 is flush with the upper surface of the upper plate 6 (FIG. 1 (a)).
[0016]
The adjusting device 11 includes a guide member 26 and a stroke regulating member 27, as shown in FIGS. The guide member 26 is a plate-shaped member provided with a locking piece 28 at one end and a screw hole piece 29 at the other end, and a large number of fine uneven strips 31 are provided on the upper guide surface in a direction perpendicular to the length direction. Provided. Further, the stroke regulating member 27 is a plate-shaped member having a concave / convex ridge 31 ′ lightly engaged with the concave / convex ridge 31 on the lower surface, a knob projection 32 provided on the upper surface thereof, and a discharge button 9 on one side. A regulating protrusion 33 for regulating the stroke is provided.
[0017]
The guide member 26 and the stroke regulating member 27 are attached as follows. That is, a rectangular adjustment hole 34 parallel to the long axis is provided on one side of the oval hole 22, and guide plates 35, 35 ′ are provided on both sides of the adjustment hole 34. Each guide plate 35, 35 'has a lower end side (the hinge receiver 23 side) higher than an upper end side, thereby forming inclined sides 36, 36' inclined at the same angle with respect to the upper plate 6. You. Since the inclination angle of each inclined side 36, 36 'is set to be larger than the inclination angle of the discharge button 9, there is a certain opening angle θ between each inclined side 36, 36' and the discharge button 9. (See FIG. 1B).
[0018]
The guide member 26 has its length direction directed toward the hinge portion 21 and the free end of the discharge button 9 (that is, the vertical direction along the surface of the upper plate 6), and is positioned below the adjustment hole 34 described above. They are arranged facing each other and below the inclined sides 36 and 36 'with a certain gap a. The guide member 26 is locked by inserting a locking piece 28 into a locking hole 37 provided on the side of the hinge receiver 23 and locking the screw hole piece 29 into a screw hole 39 with a screw 38. It is attached to the lower surface of the plate 6 (see FIG. 4).
[0019]
The stroke restricting member 27 is incorporated when the guide member 26 is attached to the lower surface of the upper plate 6, and the knob protrusion 32 is inserted through the adjustment hole 34 from below, and the protrusions 31, 31 ′ are provided. Then, both side edges of the stroke regulating member 27 are inserted into the gap a between the guide member 26 and one of the inclined sides 36, and the projection 33 protrudes from the lower surface of one side of the discharge button 9 (FIG. 3 ( a) (b)). Since the engagement of the above-mentioned concave and convex ridges 31 and 31 ′ is shallow, the knob 32 can be guided while grasping with the fingertip and sliding freely, but when the finger is released, friction that does not fall by its own weight is obtained. .
[0020]
Between the above-mentioned regulation protrusion 33 and the inclined edges 36, when the stroke regulating member 27 is in the upper end of the adjustment hole 34, there is minimal depression stroke s ₁ (see FIG. 2). According stroke regulating member 27 is moved downward, the distance due to the presence of the opening angle θ gradually increases, the maximum stroke s ₂ at the lower end. That is, the adjusting device 11 can variably regulate the stroke of the ejection button 9.
[0021]
The liquid ejection device according to the embodiment is configured as described above, and the operation is as follows. Before the liquid is discharged, the on-off valve 14 is urged by the coil spring 16 to close the valve hole 13 (see FIG. 1A). The ejection button 9 is pushed up at the top of the cap 19, and the holding portion 24 is exposed at the same level as the upper plate 6. The position of the stroke regulating member 27 is arbitrary, but if it is necessary to reduce the flow rate to the minimum, it is located at the uppermost end.
[0022]
In this state, when a finger is pressed against the holding portion 24 of the discharge button 9 and pushed in, the projection 25 pushes down the opening / closing valve 14 via the cap 19 to open the valve hole 13. The electric centrifugal pump (not shown) is driven in conjunction with the operation of the discharge button 9, and the liquid is discharged from the discharge port 4 through the liquid discharge passage 2. The depression stroke of the discharge button 9 is restricted to the minimum stroke s ₁ (see FIG. 2) by the interference of the pressing portion 24 with the restriction protrusion 33, and the flow rate discharged from the discharge port 4 is kept to a minimum.
[0023]
When the stroke restricting member 27 is moved downward as needed, the ejection button 9 can be pushed down with a stroke restricted according to the moving position, and when it is moved to the lowest end, as shown in FIG. It is pushed down, and the stroke at that time becomes the maximum stroke s ₂ (see FIG. 2), and the discharge flow rate also becomes maximum accordingly.
[0024]
The relationship between the amount of movement of the stroke restricting member 27 and the amount of change in the stroke of pressing down the ejection button 9 becomes smaller and larger when the opening angle θ between the ejection button 9 and the inclined side 36 (see FIG. 1B) is set smaller. If set, it will increase.
[0025]
【The invention's effect】
As described above, the present invention provides the adjusting device that variably regulates the depression stroke of the ejection button, so that the stroke can be adjusted to a size according to the user's preference, and the ejection button can be adjusted with a fingertip. A desired discharge amount can be obtained without fine adjustment of the depression stroke. Therefore, it is convenient especially when a small amount of ejection is desired.
[Brief description of the drawings]
1A is a cross-sectional view of an embodiment; FIG. 2B is a cross-sectional view of an adjusting device according to the embodiment;
(A) Partial cross-sectional view of the same operating state [FIG. 3] (a) Partial plan view of the same [FIG. 3] (b) (a) Cross-sectional view taken along line bb of FIG. FIG. 5 is an exploded perspective view of the same.
DESCRIPTION OF SYMBOLS 1 Container main body 2 Liquid discharge passage 3 Beak part 4 Discharge port 5 Opening 6 Upper plate 7 Liquid discharge device 8 Valve device 9 Discharge button 11 Adjustment device 12 Valve seat 13 Valve hole 14 Opening / closing valve 15 Spring receiving projection 16 Coil spring 17 Valve rod 18 Guide part 19 Seal cap 21 Hinge part 22 Oval hole 23 Hinge receiver 24 Pressing part 25 Projection 26 Guide member 27 Stroke regulating member 28 Locking piece 29 Screw hole piece 31, 31 'Uneven projection 32 Picking projection 33 Controlling projection Piece 34 adjusting hole 35, 35 'guide plate 36, 36' inclined side 37 locking hole 38 screw 39 screw hole

Claims (1)

A normally-closed on-off valve is provided in the middle of the liquid discharge passage, a hinge portion of the discharge button is attached to the lower surface of the upper plate of the container body so as to be vertically swingable, and a pressing portion of the discharge button is provided on the upper plate. The opening / closing valve is opened by fitting down into the hole and depressing the holding portion engaged with the opening / closing valve so that the liquid pressurized inside the container body is discharged to the outside, and the discharge button is In the liquid discharging device for a liquid container provided with an adjusting device that variably limits the size of the press-down stroke , the adjusting device includes a guide member and a stroke limiting member, and the pressing portion of the discharging button is fitted. An adjustment hole is provided along one side of the hole, and guide plates are provided on both sides of the adjustment hole. The guide plate has a fixed angle θ that becomes larger from the free end to the hinge portion with respect to the lower surface of the discharge button. Have The inclined guide side is formed, the guide member of the adjusting device is attached with a fixed gap to the inclined guide side, and the stroke limiting member is slidably inserted into the gap between the inclined guide side and the guide member. Fitting, the knob projection of the stroke limiting member is inserted into the adjustment hole , and the regulating projection provided on the stroke limiting member is projected from the lower surface of the discharge button with a required gap. Liquid discharge device for liquid containers.

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