JPH08148209A - Terminal block - Google Patents

Abstract

PURPOSE: To absorb noises in a terminal block and to reduce an area necessary for a noise absorbing circuit on a printed board so as to miniaturize the circuit forming noise preventing parts integrally with the terminal block. CONSTITUTION: Noise preventing parts 4 such as a barrister XNR, a capacitor C103 and the like are integrally formed by resins in the base board 2 of a terminal block and connected to a connection terminal 5 via a conductive plate 3. Thus, it is not necessary to provide any noise absorbing circuits on the printed board 2, incursion of noises into a circuit main body can be prevented and the electric circuit can be made small.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal block for connecting another electric device, a sensor, a remote controller or the like to a certain electric device.

[0002]

2. Description of the Related Art In recent years, the systemization of electrical equipment has advanced,
The number of cases in which multiple electric devices are connected and used is increasing. Along with this, the number of electric products provided with a terminal block for connecting other electric devices is increasing. As the shape of the terminal block, a terminal block having a certain height and a certain width is generally taken into consideration in consideration of ease of tightening screws and insulation between terminals.

[0003]

However, as the speed and functionality of electrical equipment have increased, the electromagnetic use environment of such equipment has also diversified, making it extremely sensitive to conduction noise and the like that jumps in from the outside. However, by connecting and using a plurality of electric devices, failures and malfunctions due to noise from other devices and connection lines are increasing. Therefore, in order to take sufficient noise countermeasures, many noise countermeasure components must be provided, and the area occupied by the noise absorption circuit on the printed circuit board increases, which becomes a factor that hinders the miniaturization of electrical equipment. There was a problem of being lost.

[0004]

In the terminal block according to the first means of the present invention for solving the above-mentioned problems, a noise suppression component is integrally molded with the terminal block so that the terminal block absorbs noise and prints. This is to reduce the area required for the noise absorption circuit on the substrate.

The terminal block according to the second means of the present invention is
By integrally molding the leads wound around the magnetic body with the terminal block, the terminal block absorbs noise and the area required for the noise absorption circuit on the printed circuit board is reduced.

Furthermore, in the terminal block according to the third means of the present invention, a space for the noise countermeasure component is provided in the substrate portion of the terminal block, and the noise countermeasure component is connected only to the terminal vulnerable to noise. It reduces the area required for the noise absorption circuit.

[0007]

In the terminal block according to the first means of the present invention, the noise that has entered from the outside is removed by the noise countermeasure component in the terminal block, and the noise can be prevented from entering the main body of the electric circuit. There is no need to provide a noise absorption circuit on the printed circuit board.

Further, in the terminal block according to the second means, the noise of entering the electric circuit main body is attenuated by the inductance of the signal line wound on the magnetic material inside the terminal block, so that the printed circuit board of the electric circuit is not affected. There is no need to provide a noise absorption circuit.

Furthermore, in the terminal block by the third means,
Noise resistance is improved by inserting noise suppression components into the board space and connecting to terminals that are vulnerable to noise and terminals where noise easily enters, so it is necessary to provide a noise absorption circuit on the printed circuit board of the electric circuit. There is no.

[0010]

Embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1) FIG. 1 is a block diagram showing a first embodiment of a terminal block according to the first means of the present invention. The basic configuration is the same as the description of the conventional example, and the difference between this example and the conventional example is that the noise suppression component 4 is integrally molded on the substrate 2 of the terminal block with resin. In the conventional terminal block, it is necessary to have a certain height and width in order to secure the insulation between the terminals in a shape that makes it easy to tighten the screws. Can be realized with the same size as the conventional terminal block. In addition, the noise suppression component 4
Since a varistor, a capacitor and the like are integrally molded to prevent noise from entering the circuit body, a noise absorbing circuit is not required on the printed circuit board, and the electric circuit can be downsized.

(Embodiment 2) FIG. 2 is a constitutional view showing a second embodiment of the terminal block according to the second means of the present invention. The basic configuration is the same as the description of the conventional example, and the difference between this example and the conventional example is that the magnetic body 6 is integrally molded on the substrate 2 of the terminal block, and the lead for connecting the connection terminal 5 and the conductive plate 3 thereto. It is that 7 is wrapped around. As a result, noise entering from the terminals can be attenuated before reaching the circuit body, and the electric circuit can be downsized as in the embodiment.

(Embodiment 3) FIG. 3 is a block diagram showing a third embodiment of the terminal block according to the third means of the present invention. The basic configuration is the same as the description of the conventional example, and the difference between this example and the conventional example is that a space 8 for noise suppression components is provided on the substrate of the terminal block. By installing a varistor, a capacitor, etc. in the space 8 for noise suppression parts and connecting to a terminal weak against noise, the noise resistance of the terminal can be improved, and the electric circuit is the same as in the case of (Example 1). Can be miniaturized.

[0014]

As described above, according to the terminal block of the first aspect of the present invention, it is possible to reduce the size of the noise absorbing circuit as compared with the case where the circuit is designed in a plane on the printed circuit board. Further, since noise countermeasures can be taken at the position closest to the terminal that is the entrance of noise, the noise resistance of the device can be improved as compared to the conventional case.

According to the terminal block of the second aspect of the present invention, in addition to the effect of the first aspect, it is possible to attenuate the ingress noise depending on the inductance of the coil.

Further, according to the terminal block of claim 3 of the present invention, in addition to the effect of claim 1, since the noise absorbing component can be set according to the required noise absorbing capacity of the predetermined terminal, the noise absorbing adaptive performance can be set. The range of becomes wide.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a terminal block according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing a terminal block according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram showing a terminal block in a third embodiment of the present invention.

FIG. 4 is a configuration diagram showing a conventional terminal block.

[Explanation of symbols]

 1 Connection screw 2 Board (resin) 3 Conductive plate 4 Noise suppression component 5 Connection terminal 6 Magnetic material 7 Lead 8 Space

Claims (3)

[Claims] 1. A connection terminal for electrically connecting to a plurality of other electric devices, and a conductive plate having a shape easy to solder for connecting the connection terminal and the printed circuit board,
A connection screw for screwing a signal line from the other electric device to the connection terminal, and a board having a strength for screw tightening that secures electrical insulation between the terminals and a shape and height that facilitates screw tightening. A terminal block that is equipped with a noise suppression component that is connected between signal lines on this board and is integrally molded with resin. 2. A connection terminal for electrically connecting to a plurality of other electric devices, a conductive plate in a shape easy to solder for connecting a terminal block and a printed circuit board, and other electric devices. The connection wire for screwing the signal line of the terminal to the connecting terminal with a screw, and a board that secures electrical insulation between the terminals and has strength for screw tightening and a shape and height that facilitates screw tightening are provided. A terminal block in which a lead connecting the terminal and the conductive plate is wound around a common magnetic body and integrally molded with the substrate. 3. A connection terminal for electrically connecting to a plurality of other electric devices, and a conductive plate having a shape easy to solder for connecting the connection terminal and the printed circuit board,
Secure the electrical insulation between the terminals and the connection screw for tightening the signal line from the other electric device to the connection terminal by screwing,
A terminal block comprising: a board having a strength against screw tightening, a shape and a height at which a screw can be easily tightened, and the board having a space portion for noise suppression.