JPH0214113B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibrator device driven using direct current as a power source.

Among vibrator devices driven using direct current as a power source, a method of vibrating by opening and closing contacts, such as that used in bells, has been widely used since it can be obtained at a very low cost. However, with this method, it is difficult to change the frequency, and when using the car's battery as a power source, there is a problem in that changing the intensity of vibration causes heat generation, etc.

The present invention has been proposed to solve the above-mentioned conventional drawbacks, and is formed by a U-shaped iron plate consisting of upper and lower iron plates, and an upper iron plate of the U-shaped iron plate, and a vibrated body is fixed. a movable piece with an electromagnet disposed between it and a fixed piece formed of a lower iron plate;
a spring holding member fixed to a rising portion connected to an end of the fixed piece; a lower contact attached to an insulating plate connected to an end of the movable piece;
an upper contact that is attached to an insulating plate connected to an end of the rising portion and is opposed to the lower contact, and that opens and closes the DC power circuit of the electromagnet together with the lower contact; The upper and lower contacts are separated by energizing the electromagnet and attracting the movable piece, and when the energization to the electromagnet is stopped and the electromagnet stops operating, the attraction of the movable piece is released, and this action In a vibrator device that vibrates a vibrated body through the movable piece by repeating the above, a cam mechanism is held near the upper contact and sets the amount of movement of the upper contact, and one end is fixed to the spring holding member. The swing width can be easily changed by having a spring member that biases the upper contact in the direction of the lower contact, and an operating mechanism that operates the cam mechanism from the outside to adjust the amount of movement of the upper contact. Therefore, it is an object of the present invention to provide a vibrator device in which the strength of vibration can be easily changed.

The present invention will be described below with reference to the embodiments shown in the drawings. Reference numeral 1 is a U-shaped iron plate having spring properties, and an electromagnet 3 driven by a DC power source 2 is fixed inside the plate. A slight gap 4 is provided between the upper surface of the electromagnet 3 and the movable piece 1a of the U-shaped iron plate 1, and when the electromagnet 3 is energized, the movable piece 1a is attracted by the electromagnet 3 and tilts, and the energization is stopped. When it breaks, its springiness allows it to return to its original position.
Vibrations are generated by the movement of the movable piece 1a.

5 is a switch for opening and closing the DC power supply circuit 6; 7a;
is an upper contact, 7b is a lower contact, and the contacts 7a, 7
b is for opening and closing the circuit 6. When the movable piece 1a is not attracted to the electromagnet 3, the upper contact 7a is pulled by the spring 8 and is closed as shown in FIG. 2, but when the electromagnet 3 is energized Then move the movable piece 1a
When it is sucked in, it opens as shown in Figure 4. By the way, the upper contact 7a is fixed to an insulating plate 9 fixed to the rising part 1b of the U-shaped iron plate 1, and the lower contact 7b is fixed to an insulating plate 10 fixed to the tip of the movable piece 1a. One end is connected to an insulating plate 9, and the other end is connected to an L-shaped plate 11 fixed to the rising portion 1b.

Reference numeral 12 denotes an eccentric roller, which is a feature of the present invention, and is rotatably supported on the upper part of the L-shaped plate 11.
It can be rotated from the outside by a handle 14 via a flexible cable 15. The eccentric roller 12 regulates the range in which the insulating plate 9 can be moved downward by being pulled by the spring 8, depending on the eccentricity of rotation. Therefore, as shown in Fig. 4, the movable piece 1
When a is attracted by the electromagnet 3 and goes down, the insulating plate 10,
That is, the lower contact 7b also descends, and as it descends, the upper contact 7a also descends together with the insulating plate 9.
The timing at which the contacts 7a and 7b open is adjusted by contacting the eccentric roller 12 and being unable to descend any longer. That is, the eccentric roller 12 sets the amount of movement of the lower contact 7b fixed to the movable piece 1a via the insulating plate 10. 13 is a vibrated body fixed to the movable piece 1a.

Next, to explain the operation, FIG. 2 shows a state in which the switch 5 is open and the electromagnet 3 is not energized. Now, if you close the switch 5 as shown in Figure 3,
A circuit consisting of the DC power supply 2, electromagnet, and contacts 7a and 7b is formed, and the movable piece 1a of the U-shaped iron plate 1 is attracted to the electromagnet 3, and as shown in FIG.
The lower contact point 7b is lowered through the lower contact point 7b. Therefore, the upper contact point 7b is also lowered until it comes into contact with the eccentric roller 12 due to the tension of the insulating plate 9 by the spring 8. Since the contacts 7a and 7b are closed until this point of contact, the electromagnet 3 is in operation.

Furthermore, since the movable piece 1a is attracted by the electromagnet 3 and lowered, the lower contact 7b also lowers to the position shown in FIG.
Since the insulating plate 9 cannot be lowered from the position shown in FIG. 4 due to the eccentric roller 12, the upper contact 7a
7b opens. Therefore, the DC power supply circuit to the electromagnet 3 is opened and the electromagnet 3 is no longer energized, so that the attraction of the movable piece 1a is released and the movable piece 1a returns upward. Therefore, the lower contact 7b also rises and contacts the upper contact 7a to close the circuit, and the electromagnet 3 is energized again to attract the movable piece 1a. As the movable piece 1a moves up and down as described above, the vibrated body 13 vibrates. Also, when the eccentric roller 12 is rotated,
The opening timing of the contacts 7a and 7b is changed.

As described above in detail, the present invention includes a cam mechanism that is held close to the upper contact and sets the amount of movement of the upper contact, and one end of which is fixed to the spring holding member to urge the upper contact toward the lower contact. and an operating mechanism for adjusting the amount of movement of the upper contact by operating the cam mechanism from the outside.
Unlike conventional vibrator devices of this type in which it is difficult to change the vibration period, the vibration amplitude can be easily changed. Furthermore, by using the cam mechanism of the present invention, the amount of movement of the contact can be greatly changed in a short time, and it can be adjusted both continuously and stepwise, so the vibrator device of the present invention , the desired frequency can be quickly selected, and stepwise selection of frequencies such as strong, medium, and weak can be easily achieved. Moreover, since the present invention uses an operating mechanism to operate the cam mechanism from the outside to adjust the amount of movement of the upper contact, unlike the conventional adjusting device shown in Publication No. 40-6118, the adjustment screw is not required. This device does not require a screwdriver for adjustment, is easy to operate, and has an extremely simple structure compared to the conventional device.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of a vibrator device showing an embodiment of the present invention, and FIGS. 2, 3, and 4 are side views of the same vibrator device in different operating states. Explanation of the main parts of the diagram, 1... U-shaped iron plate, 1a
...Movable piece, 1b...Rising portion, 2...DC power supply, 3...Electromagnet, 6...DC power supply circuit, 7a...
... Upper contact, 7b ... Lower contact, 8 ... Spring (spring member), 9, 10 ... Insulating plate, 11 ... L-shaped plate (spring holding member), 12 ... Eccentric roller (cam mechanism), 13 ...Vibrated body, 14...Handle (operation mechanism), 15...Flexible cable (operation mechanism).

Claims (1)

[Claims] 1. An electromagnet is installed between a U-shaped iron plate consisting of upper and lower iron plates, and a fixed piece formed by the upper iron plate of the U-shaped iron plate, to which the vibrated body is fixed, and formed by the lower iron plate. a spring holding member fixed to a rising portion connected to an end of the fixed piece; and a lower contact attached to an insulating plate connected to an end of the movable piece. and an upper contact that is attached to an insulating plate connected to an end of the rising portion and is opposed to the lower contact, and opens and closes the DC power circuit of the electromagnet together with the lower contact, and the DC power supply The upper and lower contacts are separated by activating the electromagnet and attracting the movable piece by energizing the circuit, and when the energization to the electromagnet is stopped and the operation of the electromagnet is stopped, the attraction of the movable piece is released; In a vibrator device that vibrates a vibrated body via the movable piece by repeating this action, a cam mechanism that is held near the upper contact and sets the amount of movement of the upper contact; is fixed, a spring member biases the upper contact toward the lower contact, and an operating mechanism that operates the cam mechanism from the outside to adjust the amount of movement of the upper contact. vibrator device.