JPH0346845Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a nozzle adjustment device that is used in cleaning machines, pest control machines, etc. and is capable of changing the spray pattern.

[Prior Art] FIG. 5 shows a spray gun 10 equipped with a conventional nozzle whose spray pattern can be adjusted (Japanese Utility Model Publication No. 177558/1983). The spray gun 10 includes a gun grip 12 having a trigger 11.
, a discharge pipe 14 connected to the gun grip 12 at the proximal end and extending linearly; a grip 16 fixed to the longitudinally intermediate portion of the discharge pipe 14 and gripped by the operator; and a grip 16 attached to the distal end of the discharge pipe 14. It has a nozzle 18. The nozzle 18 has two tip members 20 with different spray patterns.
a, 20b are attached, and the discharge passage 22 in the discharge pipe 14 connects each tip member 20a, 20b via a branch passage 24 formed in the nozzle 18.
It is connected to. A ball valve 26 is disposed within the branch passage 24, and the discharge passage 22 is connected to the tip members 20a, 2.
Selectively connect to one side of 0b. That is, the tip members 20a and 20b are arranged so that one side and the other side are on the upper side and the other side, respectively, and the ball valve 26 is seated on the valve seat related to the lower tip member due to gravity, so that the discharge The passageway 22 communicates with the upper tip member from which cleaning liquid or the like is sprayed in a spray pattern of the upper tip member. When changing the spray pattern, after interrupting the spraying by operating the trigger 11 of the spray gun 10, the vertical relationship of the tip members 20a, 20b is reversed.

In another embodiment of changing the spray pattern of the spray gun 10, various nozzles 18 with different spray patterns are prepared, and the spray gun 10 is changed.
The nozzle 18 attached to the tip is replaced each time the spray pattern is changed.

[Problems to be solved by the invention] In the spray gun 10 shown in FIG. 5, the tip is heavy, which increases the burden of labor, and the work of changing the spray pattern is complicated. It is impossible to change the spray pattern while maintaining the spray pattern, and furthermore, the structure is complicated, leading to problems such as increased costs.

Further, in the case of the spray gun 10 in which the nozzle 18 is replaced each time the spray pattern is changed, the replacement work becomes more troublesome than that of the spray gun 10 shown in FIG. 5.

The purpose of this invention is to provide a nozzle adjustment device that allows for easy modification of the spray pattern while eliminating the aforementioned problems of the prior art.

[Means for Solving the Problems] According to the nozzle adjustment device according to this invention, an annular shape is formed at the distal end of the nozzle main body, in which the tip member is connected to the distal end and the discharge pipe is connected to the base end. The base end of a cylindrical adjustment member having a guide block installed therein is rotatably fitted, and the semicircular edge of the base end is fitted into the annular groove of the nozzle body. A pair of guide members whose tips are formed in a flat plate shape are sandwiched between the outer circumferential edge of the distal end and the outer circumferential edge of the central portion of the adjusting member, and the distal end of the guide member can be adjusted to widen or narrow by rotating the adjusting member. .

[Operation] The width of the gap formed by the guide member in front of the tip member can be changed by changing the amount of screwing of the adjusting member into the nozzle body. When the width of the gap is wide, the spray ejected from the tip member exits from the guide member without colliding with the guide member, so that the spray pattern from the tip member, that is, the rod-shaped spray pattern, becomes the spray pattern of the nozzle. It is formed. Further, when the width of the gap is narrow, the spray ejected from the tip member collides with the guide member and is deformed into a flat shape as a whole and exits from the guide member, so that a flat spray pattern is formed.

[Example] Hereinafter, this invention will be described with reference to an example of the drawings.

FIG. 2 shows the entire spray gun 10, and a nozzle 30 according to the embodiment is attached to the tip of the spray gun 10. The structure of the spray gun 10 other than the nozzle 30 is the same as that of the spray gun 10 shown in FIG. 5, and the explanation thereof will be omitted.

FIG. 1 is a diagram showing the structure of the range I in FIG. 2 in detail. The nozzle main body 32 is screwed into the inner periphery of the distal end of the discharge pipe 14 at its base end, and the tip member 34
has a nozzle 36, which is screwed onto the inner periphery of the tip of the nozzle main body 32. A pair of guide members 40, 40
protrudes forward of the tip member 34 , the proximal portions of these guide members 40 , 40 are each formed in a semicircular shape, and the proximal edge fits into an annular groove 42 on the outer periphery of the nozzle body 32 . However, it is sandwiched between the outer circumferential edge of the tip of the nozzle main body 32 and the outer circumferential edge of the center portion of an adjusting member 44, which will be described later. This prevents the guide members 40, 40 from moving in the axial direction of the nozzle main body 32. Further, the distal end portions of the guide members 40, 40 are formed in a plate shape, and are inclined inward toward the front of the nozzle 36 so as to cover the front of the nozzle 36 from both sides. , itself is a leaf spring, and has a biasing force that tends to spread its tip side portion outward. The cylindrical adjustment member 44 is fitted onto the outside of the guide members 40 and 40 and is rotatably fixed to the outer periphery of the central portion of the nozzle main body 32 . The annular guide block 46 is fixed to the inner periphery of the tip of the adjusting member 44 and has an inclined surface on the inside that slopes toward the front of the adjusting member 44 and inwardly.
0.40 is pressed inward. 48 is nozzle 3
It shows the spray ejected from the tip of the 0.

The operation of the embodiment will be explained with reference to FIGS. 3 and 4. In FIGS. 3 and 4, a is a view showing the front surface of the nozzle 30, b is a vertical sectional view of the nozzle 30, and c is an external view of the top surface of the nozzle 30.

FIG. 3 shows the state of the nozzle 30 when forming a bar-shaped spray pattern. The adjustment member 44 is
It is shallowly screwed into the spout body 32 and largely protrudes from the tip member 34 in the direction of arrow 50.
Therefore, the guide block 46 is in contact with the outer surface of the tip of the guide member 40, and the distance between the tips of the guide members 40, 40 is wide, so that the spray ejected from the nozzle 36 can be prevented from colliding with the guide members 40, 40. , and a spray pattern from the nozzle 36, that is, a bar-shaped spray pattern is formed as the spray pattern of the nozzle 30.

FIG. 4 shows the state of the nozzle 30 when forming a flat spray pattern. Adjustment member 4
4 is deeply screwed into the nozzle main body 32 and is located at a position largely close to the base end side of the nozzle main body 32. Therefore, the guide block 46 comes into contact with the outer surface of the guide member 40 at a location slightly away from the distal end of the guide member 40 toward the proximal end, and the distance between the distal ends of the guide members 40 is narrowed, and the jet is ejected from the nozzle 36. The spray is narrowed in the thickness direction between the guide members 40, 40 by colliding with the guide members 40, 40, and is expanded in the width direction between them, forming a flat spray pattern. guide member 40,
It comes out from the tip of 40.

[Effects of the invention] As described above, in this invention, the width of the gap between the guide member in front of the tip member is adjusted by rotating the adjustment member, and the spray ejected from the tip member is corrected by this gap. Since the spray pattern is changed, it is very easy to change the spray pattern and the spray pattern can be changed continuously. Furthermore, since opening and closing of the valve is not required when changing the spray pattern, the spray pattern can be changed while the nozzle remains in the spraying state, improving work efficiency.

Since there is no need to attach multiple nozzles or on-off valves to the tip of the spray gun, the tip of the spray gun is lighter, reducing the labor required by the operator, and the nozzle has a simple structure, reducing costs. can be lowered.

[Brief explanation of drawings]

Figures 1 to 4 relate to embodiments of this invention; Figure 1 is a detailed view of the structure in the area I in Figure 2; Figure 2 is a view showing the entire spray gun; FIG. 4 is a diagram showing the state of the nozzle when forming a predetermined spray pattern, and in FIGS. 3 and 4, a is a view showing the front side of the nozzle, b is a longitudinal sectional view of the nozzle, and c are external views of the top surface of the nozzle, and FIG. 5 is a view showing a spray gun equipped with a conventional nozzle whose spray pattern can be adjusted. 30... Nozzle, 32... Spout main body, 34... Chip member, 40... Guide member, 44... Adjustment member.

Claims (1)

[Scope of utility model registration request] A tip member 34 at the distal end and a discharge pipe 14 at the proximal end.
A base end portion of a cylindrical adjustment member 44 having an annular guide block 46 disposed therein is rotatably fitted to the outer peripheral edge of the central portion of the nozzle body 32, which is connected to the nozzle body 32. The end edge of the base end formed in a semicircular shape is fitted into the annular groove 42 of the nozzle main body 3.
A pair of guide members 40 whose tips are formed in a flat plate shape are sandwiched between the outer circumferential edge of the distal end of No. 2 and the inner circumferential edge of the central portion of the adjusting member 44, and as the adjusting member 44 rotates, the distal end of the guiding member 44 A nozzle adjustment device characterized by being able to adjust the part to be wide or narrow.