JPH0769683B2 - Multi-stage whistle - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-stage whistle, in which a plurality of whistles having different pitches are attached to a single bellows to produce a sound.

[0002]

2. Description of the Related Art A conventional toy whistle using the sound of a whistle whistle will be described with reference to FIG. 5, in which a cylindrical body 52 provided with an air outlet (not shown) is fixed to the upper opening of an expandable bellows 53, and The bellows 53 is attached to the air outlet to compress the bellows 53, whereby the air in the bellows 53 vibrates the air in the bellows 51 through the air blowing port to blow a whistle.

Since this kind of whistle can generate only a single pitch sound, when a sound with a different pitch is to be generated, it has a length different from the length of the above-mentioned whistle 51. A tube is attached to another bellows, and both bellows are combined and compressed while giving a time difference to generate sounds with different pitches, for example, "pee-poo".

[0004]

SUMMARY OF THE INVENTION In the above, the bellows, which are provided with whistles of different lengths, are arranged side by side.
When it is installed inside a doll or installed as a door phone, it occupies a large area and it is necessary to provide a mechanism for compressing the bellows with a time difference, which complicates the configuration. There is.

The present invention has been made in view of the above problems, and an object of the present invention is to attach a plurality of whistles having different pitches to a single bellows, and to apply a compressing operation to the bellows to adjust the pitch. Another object of the present invention is to provide a multi-stage whistle that can emit different sounds one after another, has a small occupied area, and that does not require a time difference compression mechanism.

Further, according to the present invention, by constructing the piston in the screw-rotating system, the time from the first stage whistle to the next whistle is extended and the whistle height is increased. It is to provide a multi-stage whistle that can be lowered.

[0007]

According to the present invention, a plurality of outlets are provided at intervals in the axial direction of the circumferential surface of a cylindrical body having a flange provided with an air supply hole with a check valve, and the respective outlets are provided. With a whistle configured to have different pitches, the flange is fixed to the opening of the expandable bellows, on the peripheral surface of the piston slidably engaged with the inner peripheral surface of the cylindrical body, An air supply port that sequentially faces the blowout port when the cylindrical body descends is provided, the end of the piston rod fixed to the piston is fixed to the bottom of the bellows, and the whistle is blown in multiple stages by expansion and contraction of the bellows. And

Further, according to the present invention, a piston is screwed to the inner peripheral surface of the cylindrical body, and a shaft support mechanism for rotatably supporting the piston rod is provided at the bottom of the bellows. Is.

[0009]

When the bellows is compressed, the cylindrical body descends with respect to the air supply port provided in the piston, so that the blowout port provided in the cylindrical body faces the air supply port of the piston one after another, and the air in the bellows is removed. The sound can be blown out from the air outlet through the air supply port, the whistle can be blown, and sounds with different pitches can be blown in sequence.

Further, the whistle having different pitches can be blown by rotating the piston by screwing the piston to lower the cylindrical body and contracting the bellows so that the air supply holes of the piston are sequentially opposed to the outlet of the whistle. In this case, the whistle of the second stage can be blown after the whistle of the first stage is separated from the whistle of the first stage.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings showing the embodiments.

FIG. 1 is a perspective view of a multi-stage whistle of the present invention, and FIG. 2 is a cross-sectional view of the multi-stage whistle. An air intake hole 9 is provided in a flange 8 connected to the lower end of the cylindrical body 1. A check valve 10 is provided on the back surface side to introduce air into the bellows 11 when the bellows 11 returns to its original shape, which will be described later, and to prevent the air sucked during compression from leaking to the outside.
In addition, the air blowout port 2, in the axial direction of the peripheral surface of the cylindrical body 1,
5 are installed vertically at intervals, and in each of the outlets 2 and 5,
A whistle whistle including, for example, a long tube 4 and a short tube 7 having edges 3 and 6 and closed at one end is attached.

On the other hand, an air supply hole 13 is bored in the peripheral surface of the piston 12 slidably engaged with the inner peripheral surface of the cylindrical body 1, and the end portion of the piston rod 14 fixed to the piston 12 is , Is fixed to the bottom surface of the cylindrical bellows 11 having resilience by, for example, a screw 15. And the cylindrical body 1
The cylindrical body 1 is positioned so that the air outlets 2 and 5 provided on the piston 12 face the air supply hole 13 provided on the piston 12, and the cylindrical body 1 is engaged with the piston 12, and the peripheral surface of the flange 8 is bellows 11 Stick to the upper opening of the.

Since the multistage whistle of the present invention is constructed as described above, the bellows 1 filled with air through the air suction hole 9 is provided.
When 1 is compressed, the cylindrical body 1 descends, and first, the outlet 5
Faces the air supply hole 13 of the piston 12, whereby the air in the bellows 11 passes through the air supply hole 13 and blows out 5
To the edge 6 from the outlet 5 and the cylinder 7
When the air inside is vibrated, for example, a beeping sound is generated, and when the air supply hole 13 faces the next outlet 2, the air inside the cylinder 4 is vibrated in the same manner to cause a “poo”.
A low-pitched sound is generated.

Next, as shown in FIG. 3, the air supply hole 13 provided in the piston 12 is formed into an elliptical shape so that the air supply hole 13 has a cylindrical outlet 2, 5.
You can extend the duration of the whistle blowing time by facing the

FIG. 4 shows a cross section of a modified example of the present invention, in which a female screw 20 is provided on the inner peripheral surface of the cylindrical body 1 and a male screw 21 is provided on the outer peripheral surface of the piston 12 so that they are screwed together. At that time, a screw pitch is formed so that the air supply hole 18 of the piston 12 faces the blowout port 5, and the piston 12 then faces the next blowout port 2 after, for example, one rotation.
And a piston rod 14 that connects with the piston 12
A bearing 22 provided on the bottom surface of the bellows 11 maintains the airtight state of the end portion of the shaft and rotatably supports the shaft.

Reference numeral 25 in the drawing denotes a forward / reversible motor 25 in which a gear 24 fixed to the shaft end of the piston rod 14 and a gear 24 meshing with the gear are axially mounted.

According to this structure, when the motor 25 is driven to rotate, the piston 12 is screwed and rotated by the gears 24 and 23, the cylindrical body 1 descends, and the bellows 11 starts compression. As a result, the air supply hole 13 of the piston 12 is opposed to the air outlet 5, air is supplied to the edge 6 to make a sound, and the piston 12 further rotates once to make the air supply hole 13
Supplies air to the edge 3 in opposition to the next outlet 2 and blows.

When the piston is screw-rotated as described above, the time from when the air supply hole 13 faces the air outlet 5 to the next air outlet 2 can be increased, and the air outlets 5 and 2 can be provided.
Even if the axial distance between the first stage and the second stage is shortened, the second stage whistle can be produced after an appropriate time has elapsed after the first stage whistle is finished.

A protrusion is provided on the cylindrical body 1, and limit switches are provided at both ends of the movement path of the cylindrical body 1. Whenever the protrusion contacts the limit switch, a control signal for switching the rotation direction of the motor 25 is transmitted. As a result, the multi-stage whistle can be repeated.

Further, although the whistle whistle is used as the whistle shown in the above embodiment, a lead whistle can be used.

Further, it is a matter of course that the number of blow-out ports of the cylindrical body 1 may be increased to three or more and whistles may be attached to each of the blow-out ports so that a large number of different tones can be produced.

Needless to say, the multistage whistle of the present invention can be provided in a doll or used as a sounding tool in a door phone or a cuckoo clock.

[0024]

As described above, according to the present invention, it is possible to provide a single bellows with a compressing action so that the descending outlet of the cylindrical body faces the air supply hole of the piston one after another, and the pitch is different. In addition to being able to generate a sound, it is possible to reduce the occupied area, and it is possible to blow a multistage whistle with a single motion.

Further, according to the present invention, the piston is screwed and coupled to the inner peripheral surface of the cylindrical body, so that even if the intervals between the outlets are shortened, an appropriate time is required after the end of the first whistle sounding. You can make the next whistle blow at an interval. Therefore, even if many whistles are attached, the axial length of the cylindrical body can be relatively shortened, and the height of the multistage whistle can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a multistage whistle of the present invention.

FIG. 2 is a sectional view of the multistage whistle shown in FIG.

FIG. 3 is a view showing a modified example of the piston of the present invention provided with an oblong air supply hole.

FIG. 4 is a sectional view of a modified example in which the piston of the multistage whistle of the present invention is rotatably formed.

FIG. 5 is a front view of a conventional whistle. 1 Cylindrical body, 2 and 5 Blow-out port, 3 and 6 Edge, 4 and 7 Cylinder with one end closed, 8 Flange, 9
Air suction hole, 10 check valve, 11 bellows, 12 piston, 13 air supply hole, 14 piston rod

Claims (2)

[Claims] 1. A plurality of outlets are provided at intervals in the circumferential axial direction of a cylindrical body having a flange provided with an air supply hole with a check valve, and the pitches of the respective outlets are different from each other. And the flange is fixed to the opening of the expandable bellows, and the blow-out port is attached to the peripheral surface of the piston slidably engaged with the inner peripheral surface of the cylindrical body when the cylindrical body descends. A multi-stage whistle characterized in that an air supply port which is sequentially opposed to is provided, an end portion of a piston rod fixed to the piston is fixed to a bottom portion of the bellows, and the bellows expand and contract to make the whistle blow in multiple stages. 2. A piston is screwed to the inner peripheral surface of the cylindrical body, and a pivotal support mechanism is provided at the bottom of the bellows to rotatably pivot the piston rod. The described multi-stage whistle.