JPS6221198A - Bell - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention is inspired by bells used for disaster prevention and crime prevention.

2. Description of the Related Art Conventionally, two types of bells have been used, although they are not shown in the drawings because they are well known.

One is a motor bell, and the other is a contact opening/closing electromagnetic bell.

Motorpel uses a motor to rotate an eccentric shaft using a gear, and causes the arm attached to the eccentric shaft to reciprocate, changing the rotational motion to reciprocating motion, and this reciprocating motion causes the batting rod to reciprocate and strike the bell. It's meant to hit.

The electromagnetic bell excites an electromagnet with a direct current, attracts an iron piece provided on the main body through a spring, opens a current circuit due to this attraction, stops excitation of the electromagnet, and releases the iron piece. By repeating this action, the piece of iron strikes the gong.

Problems to be Solved by the Invention Since the motor pel uses gears, the gears wear out with use, which poses a problem in terms of durability. Furthermore, since the eccentric shaft is used as described above, depending on where the arm of the eccentric shaft is located, there is an undesirable difference in the magnitude of the starting current at the time of starting. In addition, the electromagnetic bell has contacts that open and close many times, generating sparks and causing significant wear and tear on the contacts.

This invention was devised to solve these problems.The purpose of this invention is to eliminate the risk of wear on gears, etc., to prevent significant differences in starting current during startup, and to prevent contact points from becoming too large. To provide a bell that is free from damage caused by sparks.

Means for Solving the Problems This invention will be described with reference to the drawings showing the embodiments.
In the figure, a constant magnetic field member 2 that forms a constant magnetic field is provided in a fixed or movable state directly or indirectly on the base 1;
A variable magnetic field member 3 that forms a variable magnetic field, which is arranged to move relative to the constant magnetic field member 2, indirectly or directly: Of both magnetic field members 2.3, a variable magnetic field member 3 that is movable relative to the constant magnetic field member 2. iJ An elastic member 4 provided directly or indirectly between the magnetic field member formed in a state of movement and the base 10; A striker 5 provided on the magnetic field member in a movable state of the base IK; This bell is characterized in that it consists of a gong 6 thrown within the iJ movement range of the child 5 and onto the base 1.

Effect of the Invention First, a pulsed current is passed through the variable magnetic field member 3. As mentioned above, this pulse current can be obtained from a DC power source such as a battery and used. Although not shown, an alternating current may be passed using an alternating current power source, in other words, a fluctuating current is passed.

When a fluctuating current is passed through the fluctuating magnetic field member 3, the fluctuating magnetic field member 3
generates a fluctuating magnetic field, and since this fluctuating magnetic field is within the range of the constant magnetic field, the two magnetic fields interact with each other, causing the magnetic field member that is formed to be movable with respect to the base l to reciprocate in the direction of the arrow. , that is, it vibrates. This vibration is performed smoothly and correctly by the action of the elastic member 40. Further, since a striking member 5 is provided on the magnetic field member movable with respect to the base 1, and a gong 6 is provided within the range of its reciprocating motion, the go/g 6 is struck and struck. In the example shown in FIG. 1, the variable magnetic field member 3 is movable with respect to the base body 1. However, although not shown, the reverse may be possible.

Further, the variable magnetic field member 3 shown in FIG. 1 is a coil.

However, this may also be an electromagnet.

A piece of magnet was used as the constant magnetic field member 2. This magnet piece may also be an electromagnet.

For the elastic member 4 shown in FIG. 1, silicone rubber was used as an example. Any elastic member other than silicone rubber may be used for this purpose.

Also, in Figure JP1 - [8 is a guide, 9 is a joint made of aluminum as an example, IO is its top, 11 is a recess, 12 is a sliding part, 13 is a synthetic resin guide part, and 14 is a regulation part. Department. 15 is a non-magnetic metal frame;
16 is the claw part, 17 is the iron piece, 18 is the groove, 19 is the hole, □
□□ is a conducting wire, and 21 is a fixing member.

Next 1. ? The circuit shown in Figure 3 is a power supply circuit invented to obtain pulse current from a DC power source such as a battery.
This is an oscillation circuit formed by Sae shows the transformer that extracts the pulsed current.

Note that Figure 174 is 1. ? A case is shown in which the transformer shown in FIG. 3 is not used, and an operational amplifier 6 is used instead. This is the pulse power supply circuit shown in Figure 3.

In Figure 3, the transmitting circuit is configured to emit a square wave pulse of a power cycle, for example, by an IC circuit for a gate digital circuit, etc., a resistor 4, and an encoder group, and 4 indicates a damage to the IC circuit. A prevention diode is shown, and the additional one is a voltage stabilizing phase Zener diode.

Also, the MC14011B was used as an example of the transmitting circuit.

This makes it possible to obtain, for example, a group cycle pulse current in the terminal field.

Effects of the Invention By having the above-described structure, the present invention can provide a bell that is free from wear of gears, no significant difference in starting voltage, and no wear and tear of contacts.

[Brief explanation of the drawing]

Figure 1 shows an embodiment of the present invention; Figures 1 and 2 are a detailed view of the bell shown in Figure 1, and Figure 3 is a cross-sectional view of the bell.
The figure shows still another embodiment of the invention, and is a circuit diagram of a pulse device used in a bell, and Figure 4 shows a circuit for further amplifying the output of the circuit shown in Figure 3. 1... Base body 2... Constant magnetic field member 3... Variable magnetic field member 4... Elastic member 5... Striker 6... Gong

Claims (1)

[Claims] A constant magnetic field member (2) that forms a constant magnetic field, which is fixed or movable directly or indirectly on the base (1);
In the magnetic field formed by the constant magnetic field member (2), the base (
1), a variable magnetic field member (3) for forming a variable magnetic field, which is provided to move relative to the constant magnetic field member (2), either indirectly or directly; both magnetic field members (2); ,(
Among 3), a magnetic field member formed in a movable state on the base (1) and an elastic member (4) provided directly or indirectly between the base (1); a movable state on the base (1); a striker (5) provided on a magnetic field member formed in;
A bell comprising a gong (6) within a movable range and provided on the base (1).