JPH0248061Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is an improved injection device of a small household sprayer, which has a sideways structure that allows injection by operating the valve by tilting the valve stem at a certain angle from the axis.

In this type of injection device, as shown in FIG.
The upper surface 9a and the lower surface 2a of the gasket 2 are brought into close contact with each other to maintain a tight seal, while the valve stem 5 is tilted upward at a certain angle within the center hole 8 of the central bulging portion 4a of the mountain cap 4, so that the lower surface 2a of the gasket 2 The close contact between the collar 9 and the gasket 2 is broken, and the orifice 11 is opened in the valve housing 1a to inject the contents.
However, in the above structure, the gasket and the valve stem are orthogonal in position, so when the valve stem 5 falls sideways, the valve stem 5 pushes down the gasket 2, eliminating the close contact between the valve stem 5 and the gasket 2. In order to do so, the inclination angle of the valve stem 5 must be increased, which is inconvenient to use.

Therefore, an object of the present invention is to provide an injection device that can open a valve easily and smoothly.

Below, the drawings showing the embodiments will be explained.
FIG. 1 is a longitudinal cross-sectional view of the valve component of a small sprayer commonly used for household use. The valve stem 5 has a lower collar 9 and a valve stem neck 10, and an orifice 1
1 will be provided. The proximal end of the neck 10 of the valve stem 5, i.e.
Immediately above the intersection of the inner end of the upper surface 9a of the lower collar 9 and the lower end of the neck 10, an annular convex portion 9 having a diameter larger than the diameter of the neck is provided on the outer periphery.
b is provided at a predetermined height, and an orifice 11 is provided in the radial direction of the convex portion 9b. Orifice 11 is usually
Each is provided at the diametrical end of the annular convex portion 9b.

The annular convex portion 9b receives the hole edge of the lower surface 2a on the side of the center hole 7 of the gasket 2 placed on the upper surface 9a of the lower collar 9, forming an upwardly rising structure of the gasket 2 as described later.

4b is a rising hole edge of the mountain cap 4, and the hole edge itself of the center hole 8 opened in the top surface 4c of the central bulging portion 4a is bent upward by a certain width of the hole edge. In this case, the bent state may be a curved line such as a chevron shape other than the straight line shown in the figure, and may be arbitrarily deformed.

2b is a rising hole edge of the gasket 2, and the hole edge of the center hole 7 of the gasket 2, which is in close contact with the valve stem neck 10, is curved upward along the rising hole edge 4b of the top surface 4c. This rising hole edge 2b
In addition to being molded into the gasket 2 itself, it is also bent using the internal pressure of the valve housing and the upward force of the coil spring 6 that receives the valve stem 5.

Numeral 13 is an annular gap formed between the lower collar 9 and the upper and lower surfaces of the gasket 2, facing the outer end of the orifice 11, so that the directionality of the orifice 11 can be controlled regardless of the direction of the inclination of the valve stem 5. Enables omnidirectional operation when tilting. That is, since the user does not always check the direction of the orifice 11 and tilt the valve stem 5 sideways, if the annular gap 13 is not provided, the orifice 11 is opened into the valve housing when the valve stem is tilted. Either it cannot be achieved, or even if it is possible, the tilting operation must be increased. However, the presence of the annular gap 13 allows for smooth communication between the orifice 11 through the gap 13 during tilting.

FIG. 4 shows a modified structure for making the annular gap 13 more effective. An annular recess 14 with a tapered bottom that becomes deeper from the outer edge toward the inside is provided on the upper surface 9a of the lower flange 9 so that the annular gap 13 becomes more effective. It is easy to create a gap between the valve housing 1a and the orifice 1.
Make communication with 1 smoother.

A gasket 2 that seals the orifice 11 is attached to the upper surface 9a of the lower collar 9 on the outside of the orifice 11.
and the lower surface 2a of the gasket 2 are held in close contact with each other. When the valve stem 5 is tilted as shown by the two-dot chain line, the upper surface 9a of the lower collar 9 is tilted along the upright hole edges 2b and 4b, so the orifice 11 is tilted to the valve housing 1 at a relatively small tilt angle.
It will be opened to a. In addition, 1 is a valve cylinder, 3 is a suction pipe, and 12 is a flow path for a valve stem.

As described above, according to the present invention, the lower flange 9 of the valve stem 5
The top surface 4c of the central bulging portion 4a and the hole edges of the respective center holes 8 and 7 of the gasket 2 are arranged upward at a constant angle with respect to the upper surface 9a provided horizontally. During the tilting operation, the upper surface 9a of the lower collar 9 is easily separated from the lower surface 2a of the gasket 2, allowing easy and smooth injection. Moreover, it has a simple structure and can be used for general purposes.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the main part, FIG. 2 is a partial sectional view, and FIG. 3 is a longitudinal sectional view of the main part of the conventional motor. Fourth
The figure is a partially enlarged sectional view of another embodiment. 1...Valve cylinder, 1a...Valve housing, 2...Gasket, 4...Mountain cap, 4a...
Central bulging portion, 4c... Top surface, 2b, 4b... Upward rising annular portion, 5... Valve stem, 7... Center hole,
8... Center hole, 9... Lower flange, 10... Valve stem neck, 11... Orifice.

Claims (1)

[Scope of utility model registration request] The valve stem 5 is spring-received in the valve housing 1a of the valve cylinder 1, and the center of the gasket 2, which is held between the top surface 4c of the central bulging part 4a of the mountain cap 4 and the upper end of the valve cylinder 1, is attached to the valve stem neck 10. When the hole 7 is fitted and the valve stem 5 is tilted within the center hole 8 of the top surface 4c of the central bulge 4a, the lower flange 9 of the valve stem 5 is released from the close contact with the gasket 2, and the valve stem 5 is attached to the valve housing 1a. In an injection device having a sideways structure in which an orifice 11 is opened, an annular protrusion 9b and an orifice 11 penetrating in the radial direction of the annular protrusion 9b are provided at the base end of the valve stem neck 10, and a gasket is attached to the annular protrusion 9b in contact with the upper surface 9a of the lower collar 9. 2, and receives the inner end of the lower surface 2a of the central bulge 4.
An injection device in which upward rising annular portions 4b, 2b are provided on the peripheral edges of the center hole 8 of the gasket 2 and the center hole 7 of the gasket 2.