JPS6143557Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a spray nozzle device for an atomizer.

When spraying insecticides for the purpose of exterminating pests such as cockroaches, in addition to the normal spraying operation of spraying from the spray nozzle provided on the push button, When spraying an insecticide into a narrow space such as a gap between a wall and a wall, it is advantageous to be able to perform a spraying operation using a long nozzle, such as inserting a long nozzle into the narrow space and spraying. .

Conventionally, for this purpose, it has been proposed to have a push button with a long nozzle as a spare and use it to replace the existing push button as appropriate, but such a method requires a complicated replacement operation. Not only that, but there is also a risk of losing the spare push button.

The present invention has been made with the aim of eliminating all of these conventional drawbacks. Specifically, the present invention has a long nozzle at the tip of a short injection tube that protrudes laterally from the push button of the sprayer. The long nozzle is pivotally connected so as to be able to rotate between a substantially horizontally extended state and a substantially drooping bent state, and to maintain the horizontally extended state, and the base end pivot portion of this long nozzle constitutes a switching valve. When the long nozzle is in a horizontally extended state, the switching valve connects the first communication passage that connects the injection passage of the short injection cylinder to the injection port at the tip of the long nozzle via the injection passage of the long nozzle; When in the drooping and bent state, there is a second communication passage that switches the injection passage of the short injection cylinder to the nozzle opening opened on the front side of the switching valve, and a second communication passage is provided on the sliding surface between the switching valve and the tip of the short injection cylinder. This invention relates to an injection nozzle device for an atomizer, characterized in that an elastic O-ring is interposed so as to surround the injection passage of a short injection cylinder.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes a short injection tube projecting laterally from the push button b of the sprayer a, and the short injection tube 1 may be provided integrally with the push button b or can be freely removed. Alternatively, an existing push button b may be used as shown in FIGS. 4 and 5. The figures show an embodiment in the latter case, and FIGS. 1 and 5 show the case where the base end 1a of the short injection cylinder 1 is inserted into the injection cylinder b ₁ of the push button b.
Further, FIG. 4 shows the case where the cap portion 1b at the base end of the short injection tube 1 is fitted into the push button b, and by this insertion or fitting, the injection passage 1c of the short injection tube 1 is opened. , connected to the injection passage _b2 of pushbutton b. In order to obtain a proper connection state between the injection passages 1c and _b2 , appropriate attachment position regulating means can be provided at the insertion or fitting portion.

Reference numeral 2 denotes a long nozzle pivotally connected to the tip of the short injection tube 1, and the long nozzle 2 has a base 2a whose side surface is approximately circular, and is formed on the front surface of the short injection tube 1 to receive the base 2a. A pivot is provided at the tip of the short injection cylinder 1 so that it can be rotated about the shaft parts 2b, 2b (see Fig. 3) at the center of both sides of the base part 2a while being fitted with the socket part 1d. connected. The socket part 1d at the tip of this short injection cylinder 1
As shown in detail in FIG. 2, a cut groove 1e is formed in the lower part of the long nozzle 2 to receive the part near the base 2a of the long nozzle 2 during its rotational operation. Using 2a as a rotational fulcrum, it can be rotated from the drooping bent state shown in FIG. 1 to the horizontal extended state shown in FIG. 2. As shown in the figure, the long nozzle 2 has a nozzle main body 2.
₁ and a holder portion ₂₂ for inserting and holding the same. Further, as shown in FIG. 5, the nozzle main body ₂₁ may be configured to have a double structure so that it can expand and contract.

FIG. 3 is a front view of the pivot joint based on FIG. 1, and as is clear from this FIG. Fitted into the bearing grooves 1f, 1f,
It is prevented from coming out.

In order to maintain the airtightness of the pivot joint of the base 2a of the long nozzle 2 and to restrain the long nozzle 2 at any rotational displacement position, the outer circumferential surface of the base 2a,
An O-ring 3 is interposed between this and the facing bottom 1d' of the socket 1d. This O-ring 3 is made of, for example, rubber and has elasticity, and when the long nozzle 2 is rotated, it provides a large frictional resistance to the outer circumferential surface of the base 2a, thereby allowing the long nozzle 2 to be rotated freely. At the same time, the injection passage 1c', which has an enlarged diameter and which is opened at the bottom surface 1d' of the socket part 1d, is held by friction, and is surrounded by the injection passage 1c', thereby maintaining the airtightness of the pivot joint part. Bottom surface 1 of socket part 1d
d' can be a curved surface corresponding to the outer peripheral surface of the base 2a facing this.

The base 2a of the long nozzle 2 has a switching valve 4.
The valve 4 has a long nozzle 2 with a first
As shown in the figure, when in the drooping and bent state, the first communication passage 4a connecting the injection passages 1c, 1c' of the short injection cylinder 1 to the injection port 2g formed on the front surface of the base 2a, and the long nozzle 2 is in a horizontally extending state as shown in FIG.
For example, as shown in the figure, a and 4b are individually formed in a cross shape. The injection passage 2h of the long nozzle 2 may be narrowed only at the injection port 2h' as shown in the figure, or the entire passage 2h may be narrowed.

FIG. 1 shows a normal spraying operation using the short injection tube 1. During this spraying operation, the long nozzle 2 is bent vertically downward about its base 2a as a fulcrum. In this state, the valve 4 communicating with the nozzle 2g (constituting the nozzle of the short injection cylinder 1)
The first communication passage 4a is opened, and the second communication passage 4b communicating with the long nozzle 2 is closed, and the short spray cylinder 1 is ready to perform normal spraying operations.

Fig. 2 shows the situation during the spray operation using the long nozzle 2. During this spray operation, the long nozzle 2
is rotated from the drooping and bent state shown in FIG. 1 to the horizontally extended state shown in FIG. On the other hand, long nozzle 2
The second communication passage 4b leading to the side opens, and the nozzle 2g
The first communication passage 4a leading to the first communication passage 4a is closed, and the long nozzle 2 is ready to perform a spraying operation.

In this way, in the device of the present invention, by bending the long nozzle 2 in a drooping manner, the short injection tube 1 can perform a normal spray operation, and the long nozzle 2 can be rotated from this drooping state to a horizontally extending state. This makes it possible to perform a spraying operation using the long nozzle 2, and switching between these two operations is as follows.
This can be achieved by an extremely simple operation of simply rotating the long nozzle 2 to a predetermined position.
Although it is a switchable type, it is very easy to use. Furthermore, when the long nozzle 2 is not used, it can be bent into a hanging state, so it is not only convenient and does not take up much space for packaging, transportation, or storage.
It also has the advantage that it does not get in the way or get lost during normal spraying operations without using it.

Furthermore, the O-ring 3 can be used not only to maintain the airtightness of the base end pivot portion of the long nozzle 2 but also as a restraining means when the long nozzle 2 is extended horizontally, and the overall structure can be extremely simplified and can be provided at low cost. Benefits can be obtained. Furthermore, the base end pivot portion of the long nozzle 2,
In particular, the sliding part may swell due to contact with the undiluted solution, but in the present invention, this swelling can be absorbed by the cushioning properties of the elastic O-ring 3 made of rubber or the like, so the adverse effect of swelling on rotational performance is avoided. This allows smooth and light rotation to be maintained at all times.

In this invention, in order to improve the spray condition when using a long nozzle, the following relationship is established: opening area of the valve stem hole in the sprayer ≧ opening area of the communication passage of the switching valve ≧ opening area of the long nozzle nozzle. It is advantageous to set the aperture area such that.

In addition, in order to improve the injection condition when using the long nozzle, especially during inverted injection, the hole diameter of the long nozzle nozzle is 0.3 to 0.6 mm, and the hole diameter of the communication passage of the switching valve is 0.3 to 0.6 mm. The hole diameter of the valve stem in the atomizer can be set in the range of 0.3 to 0.6 mm, the housing hole diameter of the injection valve in the atomizer to be 0.3 to 0.5 mm, and the vapor tap hole diameter in the range of 0.3 to 0.5 mm.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the present invention, in which Figure 1 is a vertical cross-sectional view showing the long nozzle in a drooping and bent state, Figure 2 is a vertical cross-sectional view showing the long nozzle in a horizontally extended state, and Figure 3 is a vertical cross-sectional view showing the long nozzle in a horizontally extended state. The figure is a front view of the long nozzle proximal pivot in FIG. 1, and FIGS. 4 and 5 are longitudinal cross-sectional views showing other embodiments of the present invention, respectively. In the figure, 1 is the short injection cylinder, 1a is its base, 1
b is the cap part, 1c is the injection passage, 1d
is its socket, 1e is its kerf, 2 is a long nozzle, 2a is its base, 2b is its shaft, 3 is an O-ring, 4 is a valve, 4a is its first communication passage, 4b is its second It is a communication passage.

Claims (1)

[Scope of utility model claims] A long nozzle is provided at the tip of the short injection tube that protrudes laterally from the push button of the sprayer, and is capable of rotating between a substantially horizontally extended state and a substantially drooping bent state, and maintains the horizontally extended state. The base end pivot portion of the long nozzle constitutes a switching valve, and when the long nozzle is in a horizontally extended state, the switching valve connects the injection passage of the short injection pipe to the long nozzle. When the long nozzle is in a drooping and bent state, the injection passage of the short injection cylinder is switched to the nozzle side opened on the front side of the switching valve. It has a second communication passage, and further includes an elastic O-ring interposed on the sliding surface between the switching valve and the tip of the short injection cylinder so as to surround the periphery of the injection passage of the short injection cylinder. The spray nozzle device of the sprayer.