JPH0446625B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a horticultural sprinkler used for watering or spraying liquid in tea gardens, orchards, etc.

(Prior Art) Conventionally, the mainstream of this type of sprinkler has been one in which the spouting part is rotatable through 360° to spray water, liquid, etc. in a radial manner.

However, many gardening gardens such as tea gardens and orchards are spread out along roads or adjacent to other people's gardens, so sprinklers are installed near the road or near the border with other people's gardens. There are also cases where it is installed in

However, if a sprinkler with the structure described above is installed near a road or near the border with another person's garden, water, liquid, etc. will be scattered on the road or in another person's garden, causing harm to passersby and other gardeners. There was a problem in that it caused a lot of trouble to the owner.

Therefore, sprinklers with a spouting part that rotates only within a rotation range of 180 degrees have now been devised, and sprinklers with this mechanism are installed near roads or near the border with other people's gardens. This prevents water, liquids, etc. from being scattered on the road or in other people's gardens. In this sprinkler, the rotation direction switching mechanism is provided with two stoppers projecting horizontally at an angle of 180° from the upper part of the water pipe, and a substantially vertically downward direction provided at the lower part of the spouting part. The jetting portion is constructed by colliding the engaging body with the stopper and causing the engaging body to reciprocate between the two stoppers due to the repulsive force.
It is designed to rotate only within a rotation range of 180°.

(Problem to be Solved by the Invention) However, in the conventional sprinkler equipped with the rotational direction switching mechanism as described above, the rotational direction is switched by the repulsive force between the engaging body and the stopper. The direction of rotation cannot be switched smoothly unless a large amount of water, liquid, etc. is fed. Therefore, there is a problem that extra water, solvent, etc. are used, which is uneconomical. Further, since it takes some time to switch the rotation direction, water, solvent, etc. are sprayed only in the same direction at the time of switching, and there is a problem that the amount of water, solvent, etc. sprayed is uneven.

In view of the above problems of the prior art, it is an object of the present invention to provide a horticultural sprinkler that can uniformly sprinkle an appropriate amount of water, liquid, etc. within a 180° area.

(Means for Solving the Problems) Therefore, in the present invention, a stepped portion is provided on the circumference of the upper surface of the water conduit pipe over half the circumference thereof, and the upper part is supported on the central axis of the water conduit pipe. An ejection pipe provided to protrude from the upper surface of the water pipe, a base body rotatably attached to the upper part of the ejection pipe, and two pieces provided extending upward from two opposing sides of the base body. a support plate; a waterway switching case having two waterways branching from the center of its lower surface and curved toward both sides, the waterway switching case being swingably supported between the two support plates; Two engaging pins are provided vertically downward on the lower surface and have their tip portions bent at a substantially right angle, and two engaging pins are provided extending from both sides of the upper portion of the water channel switching case, and their tip portions are bent at a substantially right angle. 2 placed approximately on the extension line
Consisting of a book support pin and a scatterer rotatably supported by the tips of the two support pins and provided slightly obliquely to the waterway switching case, the scatterer being composed of a plurality of scattering plates. It was designed to do so.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 is a perspective view showing a horticultural sprinkler according to the present invention, FIG. 2 is a cross-sectional view along the line taken from FIG.

As shown in FIGS. 1 and 2, the water pipe 1 includes:
A thread groove 1a is threaded on the inner periphery of the upper part.
The connecting pipe 2 has a screw groove 2a threaded on its lower outer periphery, so that the connecting pipe 2 can be connected to the upper end of the water conduit 1 in a non-rotatable manner. Also,
A cylindrical ejection pipe support 3 is fitted inside the connecting pipe 2, and the ejection pipe support 3 positions the rod-shaped ejection pipe 4 on the central axis of the connecting pipe 2. is supported by Here, the upper surface of the connecting pipe 2 and the upper surface of the ejection tube support 3 are cut horizontally, and the upper end of the ejection tube 4 is made to protrude beyond the upper surface of the ejection tube support 3.

A rectangular parallelepiped-shaped base 5 is rotatably attached to a portion of the ejection pipe 4 that protrudes from the upper surface of the ejection pipe support 3. The base body 5 has two supporting plates 5 extending upward from its two opposing sides.
a, 5b are provided, and the support plates 5a, 5b
A channel switching case 6 made of rectangular parallelepiped acrylic is swingably supported between them. Here, the waterway switching case 6 is supported by a pivot pin 7 fixed to the upper center of the waterway switching case 6.
is pivotally supported between the upper ends of the support plates 5a and 5b.

A stepped portion 8 is provided on the circumference of the upper surface of the connecting pipe 2 over half the circumference thereof. Further, the waterway switching case 6 is provided with engagement pins 6a and 6b that protrude vertically downward from its lower surface. Here, the distance between the engaging pins 6a and 6b is approximately the same as the inner diameter of the connecting tube 2, and the tip thereof is bent approximately at a right angle. Therefore, when the water channel switching case 6 rotates around the jet pipe 4, the tips of the engagement pins 6a and 6b rotate at a rotation angle of 180°.
The inner wall of the stepped portion 8 is engaged with the inner wall of the stepped portion 8 alternately. In this manner, the bent end portion of the engagement pin 6a (or 6b) engages with the inner wall of the stepped portion 8, thereby pushing the lower part of the water channel switching case 6 to the side opposite to the stepped portion 8. Therefore, the water channel switching case 6 is always in a state where its lower surface is tilted upward from the stepped portion 8 side toward the opposite side.

Inside the water channel switching case 6, two water channels 10a and 10b are provided which branch from the center of the lower surface and curve toward both sides. As described above, the water channel switching case 6 is always in a state where its lower surface is tilted upward from the stepped portion 8 side toward the opposite side, so the spout 4a of the jet pipe 4a is always directed toward the stepped portion 8 side. It is continuous with the water channel 10a (or 10b) where it is located.

Further, the water channel switching case 6 is provided with support pins 11a, 11b extending from both sides of its upper part, and the tips of the support pins 11a, 11b are arranged approximately on the extension line of the water channels 10a, 10b, respectively. has been done. Scatterers 12a, 12b are rotatably supported at the tips of the support pins 11a, 11b, and the scatterers 12a, 12b are provided slightly obliquely to the channel switching case 6. For this reason, the waterway 10a (or 10b)
Water, solvent, etc. discharged from the scatterer 12a (or 12b) collide with the back side of the scatterer 12a (or 12b), thereby causing the water channel switching case 6 to rotate around the ejection pipe 4. Note that the scatterers 12a, 1
2b are four scattering plates 1 that are perpendicular to each other.
It is composed of 3. As a result, the scattering plate 1
Water, liquids, etc. that collide with the scattering plates 13 are scattered in the vicinity thereof, and water, liquids, etc. that have passed between the adjacent scattering plates 13 are scattered far away.

Next, the operation of this embodiment will be explained.

As shown in FIG. 3, the horticultural sprinkler A configured as described above is installed near the road 14 so that the step 8 on the top surface of the connecting pipe 2 is located on the opposite side of the road 14. After installing the horticultural sprinkler A in this manner, when water, solvent, etc. are distributed to the connecting pipe 2 via the water conduit 1, water, liquid, etc. are ejected from the spout 4a of the spout pipe 4. Here, first, the tip bent portion of the engagement pin 6a is connected to the stepped portion 8.
Consider the case where it engages with the inner wall of. in this case,
The lower part of the water channel switching case 6 is pushed toward the opposite side of the stepped portion 8, that is, the road 14 side, only by the bent portion at the tip of the engagement pin 6a, so that the lower surface of the water channel switching case 6 is pushed from the gardening field 15 side to the road 14 side. Tilts upward towards the side. Therefore, since the spout 4a is continuous with the water channel 10a located on the gardening field 15 side, the water, liquid, etc. spouted from the spout 4a can be discharged to the gardening field 15 side via the water channel 10a. become. A part of the water, liquid agent, etc. discharged from the water channel 10a collides with the back side of the scatterer 12a and is scattered around the scatterer 12a while rotating the scatterer 12a. Since it is integrated with the water channel switching case 6, the water channel switching case 6 rotates around the spout pipe 4 by the pressure of the water discharged from the water channel 10a. Note that the remaining part of the water, liquid agent, etc. discharged from the water channel 10a passes between the adjacent scattering plates 13 and scatters far away. As the channel switching case 6 rotates, the engaging pin 6a disengages from the inner wall of the stepped portion 8, and at the same time, the bent end portion of the engaging pin 6b, which is separated by an angle of 180°, forms the stepped portion. 8
comes to engage with the inner wall of the Even in this state, due to the above-mentioned reason, the waterway switching case 6
The lower surface of the garden slopes upward from the garden center 15 side toward the road 14 side. For this reason, the spout 4a is
Since it is continuous with the water channel 10b located on the 5th side, water, liquid, etc. spouted from the spout 4a are discharged to the gardening field 15 side via the water channel 10b. A part of the water, liquid agent, etc. discharged from the water channel 10b collides with the back side of the scatterer 12b and is scattered in the vicinity while rotating the scatterer 12b. Rotate it. Thereafter, similar operations are repeated. In this way, the waterway switching case 6 rotates at a constant rotational speed and sprinkles water, liquid, etc. only on the garden field 15, so water, liquid, etc. are not scattered on the road 14, and There is no unevenness in the amount of water.

If the garden is adjacent to another person's garden, install the sprinkler A in the garden so that the stepped portion 8 on the top surface of the connecting pipe 2 is located on the opposite side of the garden from the other person's garden. It should be installed near the border.

(Effects of the Invention) By configuring the horticultural sprinkler as described above, the present invention can sprinkle water, liquid, etc. only within the 180° rotation area. In addition, since it is not necessary to switch the rotation direction of the spout, there is no need to feed extra water, liquid, etc., and the rotation speed of the spout can be kept constant, so it is possible to It has the excellent effect of uniformly dispersing water, liquid agents, etc.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a horticultural sprinkler according to the present invention, FIG. 2 is a cross-sectional view along the line taken from FIG. 1...Water pipe, 2...Connecting pipe, 4...Ejection pipe,
5... Base body, 5a, 5b... Support plate, 6... Channel switching case, 6a, 6b... Engaging pin, 7...
...Spindle pin, 8...Stepped portion, 10a, 10b...
Water channel, 11a, 11b...Support pin, 12a, 1
2b...scatterer, 13... scattering plate.

Claims (1)

[Claims] 1. A step part provided on the circumference of the upper surface of the water conduit pipe over half the circumference thereof, and an ejection pipe supported on the central axis of the water conduit pipe, with its upper part protruding from the upper surface of the water conduit pipe; A base body rotatably attached to the upper part of the ejection pipe, two supporting plates extending upward from two opposing sides of the base body, and a support plate branching from the center of the bottom face and facing both sides. A water channel switching case that once had two curved water channels and was swingably supported between the two support plates, and a water channel switching case that was provided vertically downward on the lower surface of the water channel switching case, with its tip end at a substantially right angle. two engaging pins that are bent in a direction, and two support pins that are provided extending from both sides of the upper part of the water channel switching case, and whose tips are arranged approximately on an extension line of the two water channels;
The scattering body is rotatably supported by the tips of the two support pins and is provided slightly obliquely with respect to the waterway switching case, and the scattering body is composed of a plurality of scattering plates. gardening sprinkler.