JPS58172837A - Electromagnetic relay - 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] The present invention relates to a warning relay.

Conventionally, the excitation voltage of the excitation coil of an electromagnetic relay is specified as a rated voltage, and the user can select it depending on the circuit used, or the manufacturer can provide several rated voltages that meet the user's needs.
For example, electromagnetic relays with ratings of 8V, 5V, 6V, 12V, and 24V had to be prepared in the 1-sho-oh. Therefore, when incorporating it into a product, users
When using multiple electromagnetic relays, it is difficult to manage the parts, and there is a risk of incorrect mounting, so the manufacturer has to keep a large amount of inventory. I! 1′
f! The drawback was that manufacturing and manufacturing management were difficult.

The present invention has been made in view of the above-mentioned drawbacks, and its objective is to provide an electromagnetic relay that can cover a wide range of rated voltages.

The invention will be explained below by way of examples. FIG. 1 schematically shows the origins of an embodiment of the invention, in which (1) is a constant voltage source, (2) is an excitation coil, the constant voltage source is the constant voltage source, the dynamic excitation input terminal is 3) and excitation coil (2) in 1 ml
It has a size that can be inserted into the electromagnetic relay case S, has low power consumption, and is set so that voltage fluctuations due to human power pressure transformation 1IJJ are within the allowable voltage transformation of the excitation coil (2). . +41 excitation coil (2) in the diagram
This is an opening/closing contact mechanism that is driven by an armature and a card when energized.

FIG. 2 shows a specific circuit of the constant voltage source (1).

The transistors Ql and Qg are commonly connected to the base and the base, respectively, and the base and emitter of the transistors Ql and Qg are connected in common.

The collectors are connected to the collector transistor Ql of the transistor Q1, the base of the transistor Q2, and the negative line: /, respectively. ;Connect a resistor R1 between the collector of star q1 and the negative line. On the other hand, the transistor Q4 has its collector and base commonly connected to the bases of all the transistors Qs, and also connects the base to the negative line. The emitter of transistor Q5 is connected to the minus line via resistor 4. Further, the connection point between the collector and base of transistor q4 is connected to the collector of transistor Q2 through a resistor Rxt, and the collector of transistor Q5 is connected to the collector of transistor Q2 through a resistor. Transistor Q6 has collector, base, and emitter, respectively.
The collector of the transistor Qz, the collector of the transistor Q11, and the negative line are connected, and the excitation coil (2) t- is connected between the top of the transistor Q- and the negative line. In this way, a constant voltage control circuit is constructed in which the transistor Qs performs series control and the transistor 59- performs parallel control, and the transistors Q1. Q3F'i
)Lasisistaq! The transistors Qa and Qs control the base bias of the transistor Q6.

Therefore, in the example, the resistor R1 is 8.6 Ω resistor RI K 600 fl, the resistors p and s are 12 and 4 m,
Using 10 to 41 for resistor R4, transistors Q1 to Q3
PNP type small signal transistor, transistor, I transistor Q
IC using NPN type small signal transistors for 4 to Q6.
The electromagnetic relay has a rating of 1.
．． 5V, and the guaranteed operation range was 1.2V - 18V.

As a result, when the input voltage vin f OV is varied in the range of 28.5 V to 28.5 V, the voltage across the excitation coil L (2) is set to the value shown in Figure 8.In the previous work guaranteed voltage range, the input It can be seen that the excitation coil (2) can operate stably when the voltage Vin is in the range of 5V to 2B, 5V.

In the above embodiment, the power consumption is 56 mW toner when the input voltage Vin is 10V.

By the way, in the above embodiment, the coil excitation input terminal (3) K has a polarity, and only the DC power supply is J5VcL, which can be used as the drive #11, but it is a constant voltage! If a full-wave rectifier circuit (6) is installed between the coil excitation input terminal 3) and the coil excitation input terminal 3) as shown by the broken line, an AC power supply can be used and non-polarized, and a diode pre-amplifier 5 can be used. It can also be integrated into an IC.

Since a constant voltage source is inserted and connected between the coil excitation input terminal and the excitation coil, the excitation coil can be excited with a constant voltage even if the voltage is changed. Since ratings can be set over a wide range, one product can support many ratings.As a result, it becomes easier for manufacturers to manage inventory and manufacturing, and for users, it becomes easier to manage parts and prevents incorrect mounting. It has the effect of being fearless.

[Brief explanation of the drawing]

Fig. 1 is a schematic 4I diagram of an embodiment of the present invention, Fig. 2 is a specific circuit diagram of the same, and Fig. 8 is an operational characteristic diagram of the same.
tl+ is a constant voltage source, +21 Fi excitation coil, (3) is a coil excitation input terminal, (6) is a full wave rectifier circuit, Vini
j is the input voltage and pressure. Agent Patent Attorney Ishi 1) Choshichi

Claims (1)

[Claims] +1+ An electromagnetic relay characterized in that a constant voltage source is inserted and connected between a coil excitation input terminal and an excitation coil. (2) The constant voltage mentioned above? 1. An electromagnetic relay according to claim 1, wherein the output voltage fluctuation with respect to the input voltage #J is based on a constant voltage set within the guaranteed voltage of the excitation coil. (3) A full-wave rectifier circuit is provided in the input portion as the constant voltage source, and the input voltage is configured to generate positive or negative direct current or alternating current. F. An electromagnetic relay according to claim 1 or 2.