JP2506045Y2 - control panel - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control panel in which control parts such as an electromagnetic contactor, a reactor and a smoothing capacitor are incorporated and which can be easily assembled automatically.

[0002]

2. Description of the Related Art Conventionally, for controlling an AC electric motor using an inverter, an electromagnetic contactor, a reactor, a control transformer, a diode module forming a diode bridge, a smoothing capacitor, a discharging transistor, a transistor forming an inverter transistor are used. A control panel composed of various parts such as modules is provided. The control panel is gradually required to be simple and compact, and the incorporation of various parts, particularly the electrical connection of various parts tends to be automated.

[0003]

However, since the sizes of various parts incorporated in the control panel vary and the positions of the terminals in the parts are not uniform, the electrical connection of the various parts is made by, for example, a lead wire. It was the actual situation that the wiring had to be done one by one, etc. Particularly, in an electromagnetic contactor that controls a large current, it is necessary to prevent creeping discharge between the power supply terminals of the exciting coil provided on the upper surface of the electromagnetic contactor.
Since the protrusions are provided on the upper surface of the housing to increase the creepage distance between the terminals, wiring due to a short bar or the like having a conductive path formed on the insulating substrate is obstructed,
Therefore, there is a problem that the wiring work requires a long time, is troublesome, and the connection reliability is low. It is an object of the present invention to provide a control panel that can arrange the terminal surfaces of a plurality of types of electric components on the same plane and can reduce the number of external components as much as possible.

[0004]

According to the present invention, each control component of an electromagnetic contactor, a reactor and a smoothing capacitor is built in a resin mold casing and provided on the terminal of each control component and above the control component. In a control panel that is connected to a printed circuit board, the terminals of the electromagnetic contactor, reactor, and smoothing capacitor are formed so as to have the same height and the same surface, and are connected to the terminals of each control component by a short circuit. bar was placed on top of the control part of the insulating substrate with an integral was juxtaposed to said resin mold casing, said insulation and said control part
There is provided a control panel characterized by being connected to a substrate by screwing.

FIG. 1 is a plan view of the control panel of the present invention, FIG. 2 is a side sectional view of the control panel of the present invention, and FIGS.
FIG. 3 is a structural view for explaining the structure of an electromagnetic contactor arranged in the control panel of the present invention, FIG. 3 is a plan view, and FIG. 4 is a cross-sectional view of the central portion.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view of a control panel in which a plurality of types of control parts such as a reactor 2, a smoothing capacitor 5 and an electromagnetic contactor 1 are incorporated in a control panel 15 of the present invention. FIG.
It is the side view seen from the -A 'line side. Resin mold case 9
Is formed by injection molding, and in this case, an electromagnetic contactor 1, a reactor 2, a control transformer 3, a diode module 4'constituting a diode bridge, a smoothing capacitor 5, a discharging transistor 6, and a transistor constituting a transistor inverter are formed. The control parts of the module 7'are arranged. Here, in the control panel, the terminal portions of the control parts are formed so as to have the same height and the same plane. The short bar 1 made of a conductive material and having a predetermined conductive path is formed on one surface of the insulating substrate 10 made of resin or the like.
3 is provided, to correspond to the terminal portions 14 of the various control components, which
To so that to contact connected al.

As is apparent from FIG. 2, the resin-molded casing 9 is provided with an insulating substrate 10 provided with a short bar 13.
To place. That is, in the resin-molded housing 9, the power of each control component, for example, the electromagnetic contactor 1, the reactor 2, and the terminal portion 14 of the smoothing capacitor 5 are the same height and fixed so as to be on the same plane. Insulating substrate 10 provided with short bar 13 so that the terminal surface of the control component and the contact surface of the short bar are in contact with each other by tightening screws 16.
To place. In this way, the control parts have the same height of the terminal portions 14 so as to facilitate automatic assembly. In FIG. 2, 11 is a printed board and 12 is a cover.
Is

The upper surface of the electromagnetic contactor 1 which is a control component used in the present invention is formed into a substantially flat surface, on which the input side terminals 21, 22, 23 and the output side terminal 31, from a three-phase power supply, are provided. 32 and 33 are respectively arranged, and power supply terminals 41 and 42 for supplying power to the exciting coil of the electromagnetic contactor are arranged at the center of the upper surface of the electromagnetic contactor. And, these terminals 21, 22, 23, 31, 32, 3
3, 41, 42 are arranged such that their respective terminal surfaces are arranged in the same plane and their heights are the same. Similarly, the terminals of the reactor 2, which is a control component used in the present invention, and the smoothing capacitor 5 also have the same shape as the terminals of the electromagnetic contactor 1 (see FIGS. 1 and 2).

In the internal structure of the electromagnetic contactor 1 used in the present invention, as is apparent from FIG. 4, an electromagnetic device is provided below the electromagnetic contactor. That is, the fixed magnetic pole 61 and the exciting coil 6
3. The movable magnetic pole 62 is provided, and the movable contact 6 is provided on the movable magnetic pole 62.
Plunger 64 having 5 is coupled. Moving contact 65
Is provided with a fixed contact 32 ′ corresponding to the fixed contact 32 ′, which is connected to the terminal 32. By the way, the electromagnetic contactor has an exciting coil, and a spark is generated when the coil is energized and deenergized. A spark killer including a capacitor C and a resistor R is provided in order to generate noise due to the generation of the spark and prevent the external distribution line from being adversely affected. That is, the CR circuit absorbs the excessive current when the exciting coil L is turned on and off, thereby preventing noise from being generated outside. In providing the spark killer, in the present invention, the capacitor C and the resistor R are made into parts as shown in FIG. 5 to derive the terminals T1 and T2, and the spark killer 66 is provided as shown in FIG. Is mounted on the side of the electromagnetic device of the electromagnetic contactor, and the terminals T1 and T2 of the spark killer 66 are built in so that they are brought into contact with and connected to the lead-out terminals of the exciting coil 63 at the time of mounting.

FIG. 6 is an electric circuit diagram of the electromagnetic contactor and the spark killer. A spark killer consisting of a capacitor C and a resistor R is connected in parallel to the exciting coil 63, and the exciting coil 63 excites the three-phase power source R. , S, T are turned on, and the three-phase power supplies R, S, T are deenergized by the excitation coil 63 being deenergized.
Is cut off.

[0011]

According to the present invention, the control parts of the electromagnetic contactor, the reactor and the smoothing capacitor are built in the resin mold casing, and the terminals of the control parts and the printed board provided above the control parts are provided. In the control panel, the terminals of the electromagnetic contactor, the reactor, and the smoothing capacitor are formed to have the same height and the same surface, and an insulating substrate integrated with a short bar is provided in the resin mold housing. Since it is arranged on the upper part of the control parts juxtaposed to each other and the control parts and the insulating substrate are connected with each other by screw tightening, a lead wire is conventionally connected to the terminals between the control parts. Since it is no longer necessary to use it, the automatic assembly of the control panel with the control parts incorporated becomes easy and the productivity is improved.

[Brief description of drawings]

FIG. 1 is a plan view of a control panel of the present invention.

FIG. 2 is a side view of the control panel of the present invention.

FIG. 3 is a plan view of an electromagnetic contactor used in the present invention.

FIG. 4 is a sectional view of a central portion of an electromagnetic contactor used in the present invention.

FIG. 5 is an explanatory diagram of a spark killer.

FIG. 6 is an electric circuit diagram of an electromagnetic contactor used in the present invention.

[Explanation of symbols]

1 Electromagnetic Contactor 2 Reactor 5 Smoothing Capacitor 9 Resin Molded Housing 10 Insulating Board 11 Printed Board 13 Short Bar 16 Screws 21, 22, 23 Input Side Terminals 31, 32, 33 Output Side Terminals

Claims (1)

(57) [Scope of utility model registration request] 1. A control in which control parts such as an electromagnetic contactor, a reactor and a smoothing capacitor are built in a resin mold casing, and terminals of the control parts are connected to a printed board provided above the control parts. In the panel, the terminals of the electromagnetic contactor, reactor, and smoothing capacitor are formed so as to have the same height and the same surface, and contact-connect with the terminals of each control component.
The insulating board integrated with the short bar is arranged on the upper part of the control part arranged in parallel in the resin mold casing, and the control part and the insulating board are connected by screwing. control panel.