JPH0356271Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a rain device that makes rain artificially, and in particular relates to the improvement of a rain device used for testing automobile roof drips, wipers, etc. .

[Conventional technology]

In the conventional rainfall device, as shown in FIG. 3, a branch pipe 56 was attached to a main pipe 54 connected to a water supply pump (not shown) along a test path 52.

The branch pipe 56 was attached to the main pipe 54 at right angles, and a large number of small holes 58 were formed in the branch pipe 56. Further, the small hole 58 was formed above the branch pipe 56, and the supplied water was ejected obliquely upward from the branch pipe 56. In addition, 59 is a piping support body.

[The problem that the idea attempts to solve]

However, in the conventional rain device 50, the small hole 5
8 is fixed in diameter, and in order to prevent the water ejected from the small hole 58 from becoming rod-shaped, the water supply pressure must be set low, which poses a problem in that the rain droplet size is significantly restricted. .

In addition, water droplets fall on the main pipe 54, the branch pipes 56, and the pipe support 59, and there is a problem in that the water droplets fall in the form of large droplets, making it impossible to reproduce natural rainfall conditions.

Therefore, the purpose of the present invention is to arbitrarily change the size of raindrops to reproduce various rainfall conditions, and to
To satisfactorily reproduce natural rainfall conditions by causing water droplets falling on a branch pipe or the like to flow outside along the branch pipe itself.

[Means to solve the problem]

For this reason, the rainfall device according to the present invention connects a water supply pipe to the base end of a branch pipe attached to a support, and uses a spray nozzle attached to the tip of this branch pipe to spray water supplied through the water supply pipe. In a rainfall device that makes rain fall, the base end of the branch pipe is provided so as to be movable up and down with respect to the support,
The tip is extended diagonally upward, and further,
Spout ports are formed above and below the spray nozzle, and the spray is selectively sprayed upward or downward from either of the spray ports.

[Effect]

By the above means, the height of the spray nozzle attached to the tip of the branch pipe is changed in the vertical direction by raising and lowering the branch pipe, and the falling speed of water droplets is changed. The water will flow out of the rain area along the installed branch pipes.

Furthermore, by selectively spraying upward or downward from either one of the spray nozzles, the particle size and amount of rain can be changed.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

(First Embodiment) FIG. 1 is a front view showing a first embodiment of a rainfall device according to the present invention.

The rainfall device 1 includes a support 2, an arm 4, a slider 6, a branch pipe 8, and a spray nozzle 9.

A column 2 is erected on the ground, and an arm 4 is attached to the column 2. The arm 4 is rotatably attached to the support column 2 by a pivot shaft 22.

Thereby, the replacement of the spray nozzle 9 attached to the tip of the branch pipe 8 attached to the arm 4 and the positioning of the slider 6 can be performed safely on the ground.

The rotation of the arm 4 is controlled by the worm gear box 23.
, universal joint 24 and connecting rod 26
, bevel gear box 28 and handle 29
This is done by a well-known rotation transmission mechanism consisting of.

Further, a balance weight 48 is attached to the lower end of the arm 4 to facilitate rotation of the arm 4 using the handle 29. Furthermore, 49 is a fixing bolt for preventing the balance weight 48 from falling down.

A slider 6 is fitted on the outside of the arm 4. The height of the slider 6 can be changed by sliding the outside of the arm 4.
It can be fixed in a predetermined position by fitting a fixing bolt 44 into a small hole 42 formed on the outer periphery of the holder. 45 is a lock bolt for preventing the slider 6 from swinging.

The base end of the branch pipe 8 is attached to the slider 6, and the tip thereof extends obliquely upward from the slider 6. Further, a spray nozzle 9 is attached to the tip of the branch pipe 8. Further, a water supply pipe 11 is connected to the base end of the branch pipe 8.

The spray nozzle 9 includes a cheese (T-shaped joint) 92 with spout ports formed above and below, and a nozzle 91 that is selectively attached to either one of the spout ports.
and a blind plug 9 attached to the other side of the spout.
4, and furthermore, the cheese 92 and the branch pipe 8 are detachable.

A pressure-resistant hose is used as the water supply pipe 11 to accommodate the movement of the slider 6, and the water supply pipe 1
A swing stop ring 13 is attached to prevent the swing of the motor. Reference numeral 41 denotes a rocking ring fixing device attached to the arm 4.

To explain the operation of the first embodiment with the above configuration, first, the handle 29 is turned to rotate the arm 4 around the pivot shaft 22, and the branch pipe 8 is placed in the 8A state.

Then, the spray nozzle 9 attached to the tip of the branch pipe 8 is replaced and adjusted, and the height of the slider 6 is adjusted.

In the case of small rainfall, the spray nozzle 9 can be adjusted by attaching the nozzle 91 to the upper spout of the cheese 92 and attaching a blind plug 94 to the lower spout to spray the water upward. to make it slower. In addition, in the case of large raindrops, the nozzle 91 is attached to the lower spout of the cheese 92, and the blind plug 94 is attached to the upper spout (as shown in Figure 1) to spray water downward. Try to increase the speed.

Furthermore, by replacing the spray nozzle 9, it is also possible to change the particle size and amount of rain.

Further, the height of the slider 6 is adjusted by moving the slider 6 vertically on the outside of the arm 4 to a height that easily reproduces natural rain conditions, and fixing the slider 6 at a predetermined position with a fixing bolt 44. Thereby, the height of the branch pipe 8 is adjusted (that is, the height of the spray nozzle 9 is adjusted). Furthermore, by changing this height, the falling speed of the rain can be changed arbitrarily.

After raising the arm 4 and fixing it to the support column 2 with a fixing bolt 49, water is supplied to the branch pipe 8 through the water supply pipe 11 and water is jetted from the spray nozzle 9 to reproduce a natural rainfall state.

As described above, adjusting the height (elevating) of the branch pipe 8
The vertical height of the spray nozzle 9 attached to its tip can be changed by
The falling speed of the rain can be changed arbitrarily, and the water droplets that have fallen on the branch pipe 8 can be flowed out of the rain area along the branch pipe 8 arranged in an inclined state. It is possible to prevent large particles from falling, and it is possible to satisfactorily reproduce natural rainfall conditions.

In addition, a nozzle 91 is attached to either one of the spray nozzles 9 to selectively spray upward or downward from this nozzle 91, so that the particle size and amount of rain can be changed arbitrarily. Therefore, various rainfall conditions can be reproduced satisfactorily.

In addition, replacing the spray nozzle 9 and replacing the spray nozzle 9
height adjustment can be carried out on the ground,
Work safety can be improved.

Furthermore, by attaching the small-diameter nozzle 91 upward, the falling speed can be reduced, and by attaching the large-diameter nozzle 91 downward, the falling speed can be increased, and even if the nozzles 91 have the same diameter, The amount of rainfall can be changed by changing the mounting direction up or down.

(Second Embodiment) FIG. 2 is a front view showing a second embodiment of the rainfall device according to the present invention.

The same parts as in the first embodiment will be described with the same numbers, and only the parts different from the first embodiment will be described.

In the second embodiment, unlike the first embodiment, a chain and sprocket meshing mechanism is employed for the elevating mechanism of the spray nozzle 9.

That is, the elevating mechanism includes the support column 2 and the rail 10.
4, a slider 106, and a pair of sprockets 1
08 and chain 109.

The rail 104 is erected on the support 2. A sprocket 108 is rotatably attached to the upper and lower ends of the rail 104. The chain 109 is wound around the upper and lower sprockets 108.

The slider 106 is composed of a guide roller 107 and a chain fixing bolt 110. Guide roller 107 is rotatably attached to the inside of slider 106. The slider 106 is connected to the chain 109 by a chain fixing bolt 110.

Then, by turning a handle 114 attached to a worm gear box 112 that is engaged with the sprocket 108, the slider 106 is rotated.
is guided by the guide roller 107 on the rail 1
04 Go up and down.

As a result, the spray nozzle 9 attached to the tip of the branch pipe 8 fixed to the slider 106 is moved up and down.

Similarly to the first embodiment, in the second embodiment, the particle size, amount of rain, and falling speed of water droplets ejected from the spray nozzle 9 can be changed.

Although the invention has been described above based on a specific embodiment, it is not limited thereto, and various other embodiments that can be implemented by those skilled in the art within the scope of the claims for utility model registration are conceivable. .

For example, a plurality of branch pipes may be provided instead of one. In this way, the rain area can be expanded and a large number of cars etc. can be tested at the same time.

[Effect of idea]

As explained above, in the rainwater device according to the present invention, the branch piping is provided so that it can be raised and lowered relative to the support, and also extends diagonally upward, so that it can be attached to the tip of the branch piping by raising and lowering it. Since the vertical height of the spray nozzle can be changed, the falling speed of the rain can be changed arbitrarily, and the water droplets that have fallen on the branch pipe can be directed along the branch pipe arranged at an angle. Since the water droplets can be flowed outside the rain area, large water droplets can be prevented from falling into the rain area, and natural rainfall conditions can be reproduced satisfactorily.

In addition, since the spray can be selectively sprayed upward or downward from either one of the spray nozzles, the particle size and amount of rain can be changed arbitrarily, making it possible to adjust to various rainfall conditions. It can be reproduced well.

[Brief explanation of drawings]

FIG. 1 is a front view showing a first embodiment of a rain device according to the present invention, FIG. 2 is a front view showing the second embodiment, and FIG. 3 is a perspective view showing a schematic configuration of a conventional rain device. be. 1... Rainfall device, 2... Support, 8... Branch piping,
9...Spray nozzle.

Claims (1)

[Scope of utility model registration request] A rainfall device in which a water supply pipe is connected to the base end of a branch pipe attached to a support, and a spray nozzle attached to the tip of the branch pipe sprays water supplied through the water supply pipe to make rain. The proximal end of the support is provided so as to be movable up and down with respect to the support, and the distal end thereof is extended obliquely upward,
Furthermore, a rainfall device is characterized in that spray ports are formed above and below the spray nozzle, and the spray is selectively sprayed upward or downward from either one of the spray ports.