CN212627836U

CN212627836U - Transistor relay replacing miniature relay

Info

Publication number: CN212627836U
Application number: CN202021133484.4U
Authority: CN
Inventors: 杨轩
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-02-26
Anticipated expiration: 2030-06-18

Abstract

The utility model discloses a replace transistor relay of miniature relay, the on-line screen storage device comprises a base, the front of base is provided with eight and participates in, the back of base installs a control mainboard in addition, be provided with a plurality of diodes, resistance, lead wire and field effect transistor, protective tube, bridge rectifier, optoelectronic coupler on the control mainboard, the back of base is connected with a transparent shell in addition. The utility model discloses a transistor relay who replaces miniature relay belongs to the relay field, through adopting transistor electronic circuit to control the circuit break-make, replaces the mechanical contact inside the miniature relay, can not produce the electric spark when putting through and breaking circuit and have no mechanical life restriction; meanwhile, the external structure of the transistor relay is designed to be the same as that of the HH52P type miniature relay, so that the transistor relay can be universally replaced with the HH52P type miniature relay, machine tool faults caused by open circuit and adhesion of relay contacts are eliminated, and the equipment fault rate is reduced.

Description

Transistor relay replacing miniature relay

Technical Field

The utility model relates to a relay field, in particular to transistor relay who replaces miniaturely relay.

Background

The conventional HH52P type miniature relay uses a coil to pull in moving and static contacts to turn on a circuit, thereby realizing the function of controlling large current by small current. However, in the small relay, a circuit is controlled by switching on and off of mechanical contacts, sparks are generated instantly when the contacts are switched on and off, the contacts are oxidized and burned out, poor contact of the contacts or adhesion and disconnection of the contacts are caused after long-term use, and the circuit cannot be effectively switched on or switched off, so that circuit faults are caused. When inductive loads such as a solenoid valve coil need to be controlled, the phenomenon of spark generation is stronger, and the phenomenon of spark generation of mechanical contacts at the moment of connection and disconnection belongs to the problem that physics cannot be eliminated, so that the phenomenon becomes a problem which troubles the electric automation industry for many years.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a transistor relay that replaces a miniature relay, which can effectively solve the problems proposed in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a replace transistor relay of miniature relay, includes the base, the front of base is provided with eight and participates in, a control mainboard is installed in addition to the back of base, be provided with a plurality of diodes, resistance, lead wire and field effect transistor, protective tube, bridge rectifier, optoelectronic coupler on the control mainboard, the back of base is connected with a transparent shell in addition to the whole sealed parcel of mainboard will be controlled to transparent shell.

Preferably, eight pins arranged on the front surface of the base are divided into a left column and a right column, wherein the left column sequentially comprises: participate in (r), participate in (c), participate in (n)

And the right column comprises the following components in sequence from top to bottom: pin four, pin eight, pin four

The distance between the two rows of pins is 13.2mm, the distance between the pin (r) and the pin (r) is 4.1mm, the distance between the pin (r) and the pin (r) is nine, and the pin (r) are nine

The distance between the two pins is 6.3mm, and the pins are ninal and pin

And pin

The spacing therebetween was 6.4 mm.

Preferably, the diode mainly comprises: the LED comprises a D2 light emitting diode, a D3 voltage stabilizing diode, a D4 light emitting diode and a D5 diode, wherein the D2 light emitting diode is green, the D4 light emitting diode is red, the model of the D3 voltage stabilizing diode is BZX55C15, and the model of the D5 diode is 1N 4007.

Preferably, the resistor mainly includes: the resistor comprises an R1 resistor, an R2 resistor, an R3 resistor and an R4 resistor, and the resistance values of the R1 resistor, the R2 resistor, the R3 resistor and the R4 resistor are all 5K.

Preferably, the lead mainly comprises: a 24V + lead, a 24V + output and a 24V-lead, wherein the 24V + lead is electrically connected with the pin (c), the 24V + output is electrically connected with the pin (c), and the 24V-lead is electrically connected with the pin (b).

Preferably, the field effect transistor is a Q1 field effect transistor, and the model number of the field effect transistor is IRF 9540; the protective tube is an FU protective tube, and the specification of the FU protective tube is 2A; the bridge rectifier is a D1 bridge rectifier, and the model number of the D1 bridge rectifier is MB 10M; the photoelectric coupler is a U1 photoelectric coupler, and the type of the photoelectric coupler is PC 817B.

Compared with the prior art, the utility model discloses following beneficial effect has:

in the utility model, the transistor electronic circuit is adopted to control the on-off of the circuit, the mechanical contact inside the miniature relay is replaced, electric sparks are not generated when the circuit is switched on and off, and the mechanical service life is not limited; meanwhile, the external structure of the transistor relay is designed to be the same as that of the HH52P type miniature relay, so that the transistor relay can be universally replaced with the HH52P type miniature relay, machine tool faults caused by open circuit and adhesion of relay contacts are eliminated, and the equipment fault rate is reduced.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a transistor relay in place of a miniature relay according to the present invention;

fig. 2 is a schematic diagram of the distribution of components of the main board structure of a transistor relay replacing a miniature relay according to the present invention;

fig. 3 is a schematic diagram showing the distribution of the base pins of the transistor relay in place of the small relay according to the present invention.

Fig. 4 is a control circuit diagram of a transistor relay in place of a small relay according to the present invention.

In the figure: 1. a base; 101. firstly, pins are inserted; 102. pins fifth; 103. ninthly; 104. pin

105. Pins IV; 106. the pins are arranged; 107. pin

108. Pin

2. A control main board; 201. a D2 light emitting diode; 202. a D3 zener diode; 203. r2 resistance; 204. q1 field effect transistor; 205. an FU protective tube; 206. a D1 bridge rectifier; 207. r1 resistance; 208. a U1 photocoupler; 209. r3 resistance; 210. a D4 light emitting diode; 211. r4 resistance; 212. a D5 diode; 213. a 24V + lead; 214. 24V + output; 215. a 24V-lead; 3. a transparent housing.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-4, a transistor relay for replacing a miniature relay comprises a base 1, eight pins are arranged on the front surface of the base 1, a control main board 2 is additionally installed on the back surface of the base 1, a plurality of diodes, resistors, lead wires, field effect tubes, protective tubes, bridge rectifiers and photoelectric couplers are arranged on the control main board 2, a transparent shell 3 is additionally connected to the back surface of the base 1, and the transparent shell 3 is used for sealing and wrapping the whole control main board 2.

Eight base pins that the front of base 1 set up divide into about two, wherein the left side is listed as by last to be down in proper order: pin 101, pin fifthly 102, pin 103 and pin

104, and the right column, from top to bottom, is: pin 105, pin 106 and pin

107. Pin

108, the distance between the two rows of pins is 13.2mm, the distance between the pins (101) and (102), the distance between the pins (105) and (106) is 4.1mm, the distance between the pins (102) and (103), the distance between the pins (106) and

107 is 6.3mm, and pins are ninal to 103 and pins

104. Pin

107 and pin

108 are 6.4mm apart; the diode mainly includes: the LED comprises a D2 LED 201, a D3 Zener diode 202, a D4 LED 210 and a D5 LED 212, wherein the D2 LED 201 is green, the D4 LED 210 is red, the model of the D3 Zener diode 202 is BZX55C15, and the model of the D5 LED 212 is 1N 4007; the resistance mainly includes: the resistor 207 of the R1, the resistor 203 of the R2, the resistor 209 of the R3 and the resistor 211 of the R4 are all 5K, and the resistors 207 of the R1, 203 of the R2, 209 of the R3 and 211 of the R4 are all 5K; the lead mainly comprises: a 24V + lead 213, a 24V + output 214 and a 24V-lead 215, wherein the 24V + lead 213 is electrically connected to the pin (102), the 24V + output 214 is electrically connected to the pin (103), and the 24V-lead 215 is electrically connected to the pin (106); the field effect transistor is a Q1 field effect transistor 204, and the model number is IRF 9540; the protective tube is an FU protective tube 205 with the specification of 2A; the bridge rectifier is a D1 bridge rectifier 206, model MB 10M; the photoelectric coupler is a U1 photoelectric coupler 208, and the type is PC 817B.

It should be noted that the utility model relates to a replace transistor relay of miniaturely relay through adopting transistor electronic circuit to come the control circuit break-make, replaces the inside mechanical contact of miniaturely relay, avoids producing the electric spark, has improved greatlyThe service life of the relay; the working principle is as follows: the transistor relay pin

104 and pins

108 is a signal voltage input terminal, the

pins

102 and 106 are load voltage input terminals, and the pin 103 is a load DC24+ output terminal. Pin

104 and pins

The DC24V control signal is input 108, which becomes a 3 positive 4 negative DC24V input signal through the D1 bridge rectifier 206. The 3 rd point DC24V indicates the signal input state through the D2 led 201, controls the input working current to be 4.8mA through the R1 current-limiting resistor, and then forms a loop through the 1 and 2 pins of the U1 photocoupler 208 to the negative electrode 4 of the D1 bridge rectifier 206, driving the 3 and 4 pins of the U1 photocoupler 208 to be conducted. The load power supply is DC24V direct current, 24V + passes through (pin (c) 102) to R2 and R3 voltage-dividing current-limiting resistor, passes through 3.4 pin of U1 photocoupler 208 to (pin (c) 106) DC24V cathode to form a loop, the working current is 2.4mA, the grid G of field effect tube IRF9540 obtains 12V voltage, the source D and the drain S of field effect tube IRF9540 are conducted, the load voltage 24V + is output to the drain S through the source D, the field effect tube IRF9540 plays the role of electronic switch, the output 24V + passes through FU12A fuse to (pin (c) 103) to be output to the loads such as electromagnetic valve, and the loads are powered. D3 is 15V zener diode, and control field effect transistor IRF9540 grid G voltage does not exceed 15V, prevents that load voltage is too high to damage field effect transistor IRF9540, and R4, D4 are the output signal pilot lamp, and field effect transistor IRF9540 maximum conduction current 23A, and operating current does not exceed 2A in this circuit, and long-term high frequency operating characteristic is stable. The FU1 fuse tube blows out to protect when the load is short-circuited. When inputting signal pin

104 and pins

When 108 is in power failure, current does not flow through

pins

1 and 2 of the U1 optocoupler, pins 3 and 4 are cut off, the voltage drop of a grid G of the field effect transistor IRF9540 is 0V, a source electrode D and a drain electrode S are cut off, the load stops working when power is lost, D5 is a freewheeling diode, induced electromotive force can be generated at the moment of power failure of the inductive load, and the induced electromotive force forms a loop through D5 to be released. The input and output of the circuit are isolated by adopting photoelectricity, so that the interference of electric signals is avoided. The field effect transistor IRF9540 is used as an electronic switch to replace a small relay contact to control the on-off of a circuit, and is an advanced electronic product which saves cost and reduces equipment faults.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the output voltage of the 24V negative electrode can be changed after adjusting the polarity of the fet and some components, without being limited by the above embodiments, the above embodiments and the description only illustrate the principles of the present invention without departing from the spirit and scope of the present invention, which can also be changed and improved, and the changes and improvements fall into the scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A transistor relay replacing a miniature relay, characterized in that: including base (1), the front of base (1) is provided with eight and participates in, a control mainboard (2) is installed in addition to the back of base (1), be provided with a plurality of diodes, resistance, lead wire and field effect transistor, protective tube, bridge rectifier, optoelectronic coupler on control mainboard (2), the back of base (1) is connected with a transparent shell (3) in addition to transparent shell (3) will control the whole sealed parcel of mainboard (2).

2. A transistor relay according to claim 1, instead of a miniaturised relay, characterized in that: the base (1) The eight base pins arranged on the front surface are divided into a left column and a right column, wherein the left column is sequentially from top to bottom: pin (101), pin (102), pin (103) and pin (r)

(104) And the right column comprises the following components in sequence from top to bottom: pin (105), pin (106) and pin

(107) Pin and socket

(108) The distance between the two rows of pins is 13.2mm, the distance between the pins (101), (102), (105), (106) is 4.1mm, the distance between the pins (102), (103), (106) and (106) is nine ten minutes

(107) The distance between the pins is 6.3mm, and the pins ninal (103) and the pins

(104) Pin and socket

(107) And pin

(108) The spacing therebetween was 6.4 mm.

3. A transistor relay according to claim 1, instead of a miniaturised relay, characterized in that: the diode mainly includes: the LED comprises a D2 light emitting diode (201), a D3 voltage stabilizing diode (202), a D4 light emitting diode (210) and a D5 diode (212), wherein the D2 light emitting diode (201) is green, the D4 light emitting diode (210) is red, the model of the D3 voltage stabilizing diode (202) is BZX55C15, and the model of the D5 diode (212) is 1N 4007.

4. A transistor relay according to claim 1, instead of a miniaturised relay, characterized in that: the resistor mainly comprises: the resistor comprises a resistor R1 (207), a resistor R2 (203), a resistor R3 (209) and a resistor R4 (211), and the resistors R1 (207), R2 (203), R3 (209) and R4 (211) are all 5K.

5. A transistor relay according to claim 2, instead of a miniaturised relay, characterized in that: the lead mainly comprises: 24V + lead (213), 24V + output (214) and 24V-lead (215), wherein 24V + lead (213) is electrically connected to pin (102), 24V + output (214) is electrically connected to pin (103), and 24V-lead (215) is electrically connected to pin (106).

6. A transistor relay according to claim 2, instead of a miniaturised relay, characterized in that: the field effect transistor is a Q1 field effect transistor (204) with the model number of IRF 9540; the safety tube is an FU safety tube (205) with the specification of 2A; the bridge rectifier is a D1 bridge rectifier (206) with model number MB 10M; the photoelectric coupler is a U1 photoelectric coupler (208), and the type of the photoelectric coupler is PC 817B.