CN219533651U - A new type of ultra-thin visual time relay - Google Patents

Abstract

The utility model relates to the field of relays, in particular to a novel ultra-thin visual time relay, comprising an ultra-thin casing, the front end of the ultra-thin casing is fixedly embedded with a full-color LCD screen, and the lower part of the front end of the ultra-thin casing is provided with a parameter setting panel ; Wherein, the middle parts of the left and right ends of the ultra-thin shell are fixedly connected with fixed buckles, and the middle parts of the fixed buckles are threadedly inserted with buckle fixing screws, and the rear end of the ultra-thin shell is fixedly connected with a The cover plate is provided with a product nameplate on the upper rear end of the cover plate, and a pluggable terminal is fixedly connected to the lower rear end of the cover plate. The utility model adopts the overall structure of the equipment, sets a display screen on the surface of the ultra-thin visualized time relay and cooperates with the installation parameter setting module, and installs a transparent protective cover on the surface of the ultra-thin visualized time relay, so as to facilitate the control and use of the ultra-thin visualized time relay And the protective use of the display screen is more practical.

Description

A new type of ultra-thin visual time relay

technical field

The utility model relates to the technical field of relays, in particular to a novel ultra-thin visual time relay.

Background technique

Time relay refers to a kind of relay whose output circuit needs to go through the specified accurate time to produce a jumping change (or contact action) after adding (or removing) the input action signal. It is an electrical component used in a lower voltage or lower current circuit to switch on or off a higher voltage, higher current and high-speed automatic switching circuit.

The time relay is a very important component in the electrical control system. In many automatic control systems, it is necessary to use the time relay to realize the delay control. With the development of electronic technology, digital time relays with precise timing and simple functions have always been the best choice for electronic engineers. However, due to the rapid development of digital information technology, the size of electronic products is constantly shrinking, and there are high requirements for the size of components. The existing time relays can no longer meet the needs of use. Therefore, an ultra-thin , Programmable visual time relay came into being.

Utility model content

The purpose of this utility model is to provide a new type of ultra-thin visual time relay,

It includes an ultra-thin case, the front end of which is fixedly embedded with a full-color LCD screen, and the lower part of the front end of the ultra-thin case is provided with a parameter setting panel;

Wherein, the middle parts of the left and right ends of the ultra-thin shell are fixedly connected with fixed buckles, and the middle parts of the fixed buckles are threadedly inserted with buckle fixing screws, and the rear end of the ultra-thin shell is fixedly connected with a cover. The upper part of the rear end of the cover is provided with a product nameplate, and the lower part of the rear end of the cover is fixedly connected with a pluggable terminal, and the cover is provided with the name of the terminal on the upper end of the insertion hole of the pluggable terminal. Define the identity;

The interior including the ultra-thin shell is equipped with a main control circuit, a main board power supply circuit, an LCD screen control circuit, an electronic switch output and an optocoupler isolation input control circuit, a relay output circuit and a setting button, a main control download debugging and a main board temperature monitoring circuit.

Preferably: the mainboard power supply circuit is connected to the mainboard power supply circuit, LCD screen control circuit, electronic switch output and optocoupler isolation input control circuit, relay output circuit and setting button, main control download debugging and mainboard temperature monitoring circuit through connecting wires.

Preferably: the motherboard power supply circuit uses U2 and U3 chips, and the pins 4, 5, 6, 7 and 8 of the U2 are connected in series with the pin 1 of U2 to connect the capacitor C1 and the capacitor C2, and the capacitor C1 and the capacitor C2 are connected in parallel, And the capacitor C1 and the capacitor C2 are connected in parallel to the self-recovery fuse FUI, the self-recovery fuse FUI is connected to the cathode of the diode D1 and then connected to the VCC power supply, and the pin 2 of the U2 is connected to the diode D2, the capacitor C3, the capacitor C4, the capacitor C5 and the protection diode D3, and the diode D2, the capacitor C3, the capacitor C4, the capacitor C5 and the protection diode D3 are connected in parallel and grounded, and the pin 3 of the U2 is connected to the capacitor C3;

The pins 1 and 3 of the U3 are connected in series to a 5V power supply, and the pin 3 of the U3 is grounded, the pin 4 of the U3 is connected to the capacitor C7 and grounded, and the pin 5 of the U3 is connected to the capacitor C8, the capacitor C9 and the protection diode D4, The capacitor C8, the capacitor C9 and the protection diode D4 are connected in parallel and grounded.

Preferably: the LCD screen control circuit is connected to a full-color LCD screen using a liquid crystal port, pins 1, 2, 13 and 14 of the liquid crystal port are all grounded, pin 3 of the liquid crystal port is connected to the collector of the transistor Q1, and the transistor Q1 The emitter is grounded, the base of the triode Q1 is connected to the resistors R3 and R4, and the resistor R4 is connected to the ground, and the resistor R3 is connected to the pin 13 of the control board U1 of the mainboard power supply circuit.

Preferably: the electronic switch output and the optocoupler isolation input control circuit adopt optocoupler J2 and optocoupler J3, the pin 1 of the optocoupler J2 is connected to the resistor R10, and the pin 2 of the optocoupler J2 is connected to the resistor R11, and the resistor R10 and resistor R11 are connected to a 3.3V power supply, pin 3 of the optocoupler J2 is connected to resistor R12, and resistor R12 is connected to triode Q3 and resistor R13, the emitter and collector of transistor Q3 are connected in parallel with diode D6, and resistor R13, triode The emitter of Q3 and the diode D6 are grounded, the photocoupler J2 pin 4 is connected to the diode D6 cathode and the pin 5 of the P0 port of the main control circuit, the photocoupler J3 pin 1 is connected to the 24V power supply, and the photocoupler J3 pin 2 Connect the resistor R17 and the resistor R18, and the resistor R17 and the resistor R18 are connected in parallel, the resistor R17 is connected to the 24V power supply, and the resistor R18 is connected to pin 3 of the P0 port of the main control circuit.

Preferably: the main control circuit adopts the control board U1, and the pins 1, 24, 48 and 9 of the control board U1 are connected to a 3.3V power supply, and the pins 23, 47 and 8 of the control board U1 are grounded, and the pins 5 and 8 of the control board U1 are connected to the ground. 6 is connected to the crystal oscillator circuit, the pin 7 of the control board U1 is connected to the anode of the capacitor C10, the resistor R2 and the diode D7, and the capacitor C10, the resistor R2 and the diode D7 are connected in parallel, the resistor R2 and the diode D7 are connected to a 3.3V power supply, and the capacitor C10 grounded.

Preferably: the relay output circuit uses a photocoupler J1, the photocoupler J1 pins 1 and 2 are connected to the resistor R6 and the resistor R7, and the photocoupler J1 pin 3 is connected to the resistor R8, and the resistor R8 is connected to the resistor R9 and the triode Q2, the resistor R9 and the emitter of the triode Q2 are grounded, the collector of the triode Q2 is connected to the anode of the diode D5, and the diode D5 is connected in parallel to the relay K1.

Preferably: the setting button, the main control download debugging and the main board temperature monitoring circuit are provided with a button S1, a button S2, a button S3 and a button S4, and the buttons S1, S2, S3 and S4 are respectively connected in parallel with a capacitor C13 and a capacitor C14, capacitor C15 and capacitor C16, and capacitor C13, capacitor C14, capacitor C15 and capacitor C16 are respectively connected to resistor R24, resistor R23, resistor R22 and resistor R21, and resistor R24, resistor R23, resistor R22 and resistor R21 are connected to 3.3V power supply , the key S1, key S2, key S3 and key S4 are connected to the pins 41, 42, 43, 44 and 45 of the control board U1 of the power supply circuit of the main board.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model adopts the overall structure of the equipment, sets a display screen on the surface of the ultra-thin visualized time relay and cooperates with the installation parameter setting module, and installs a transparent protective cover on the surface of the ultra-thin visualized time relay, so as to facilitate the control and use of the ultra-thin visualized time relay And the display screen is used for protection, which is more practical; and the installed Hongfa relay host has the advantages of stronger mechanical life and more stability; the use of all-solid capacitors for capacitors has the advantage of being more stable in continuous high-temperature environments; the terminals use plug-in The electronic switch uses a transistor, which has a mute effect; the main board is made of SMT technology, and the performance is more stable; Positive and negative diodes are reversely connected, which is effective enough to avoid damage due to wrong connection of positive and negative poles; the inductor uses an integrally formed inductor, and the electromagnetic interference is smaller; the coupler uses an input and output isolation radio coupler, which has a certain degree of independence and does not will cause mutual interference.

Description of drawings

Fig. 1 is a schematic diagram of the front structure of the utility model;

Fig. 2 is a schematic diagram of the back structure of the utility model;

Fig. 3 is the circuit diagram of the power supply part of the motherboard of the utility model;

Fig. 4 is the utility model LCD screen control circuit diagram;

Fig. 5 is the control circuit diagram of electronic switch output and optocoupler isolation input of the utility model;

Fig. 6 is a circuit diagram of the main control part of the utility model;

Fig. 7 is the utility model relay output part circuit diagram;

Fig. 8 is a circuit diagram of setting buttons, main control download and debugging, and main board temperature monitoring of the utility model.

In the figure: 1. Ultra-thin shell; 2. Full-color LCD screen; 3. Parameter setting panel; 4. Buckle fixing screw; 5. Fixing buckle; 6. Cover plate; 7. Product nameplate; 8. Terminal name Define the logo; 9. Pluggable terminal;

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1-Figure 8, a new type of ultra-thin visual time relay,

It includes an ultra-thin casing 1, the front end of the ultra-thin casing 1 is fixedly embedded with a full-color LCD screen 2, and the lower front end of the ultra-thin casing 1 is provided with a parameter setting panel 3;

Wherein, the middle parts of the left and right ends of the ultra-thin casing 1 are fixedly connected with fixing buckles 5, and the middle parts of the fixing buckles 5 are threadedly inserted with buckle fixing screws 4, and the rear end of the ultra-thin casing 1 is passed through The screw is fixedly connected with a cover plate 6, the upper rear end of the cover plate 6 is provided with a product nameplate 7, and the lower rear end of the cover plate 6 is fixedly connected with a pluggable terminal 9, and the cover plate 6 is connected to the pluggable wiring The upper end of the plug-in hole of the post 9 is provided with a binding post name definition mark 8;

The interior including the ultra-thin shell 1 is equipped with a main control circuit, a main board power supply circuit, an LCD screen control circuit, an electronic switch output and an optocoupler isolation input control circuit, a relay output circuit and a setting button, a main control download debugging and a main board temperature monitoring circuit .

Specifically: use a full-color LCD screen 2 with a resolution of 128X160, and display all content in Chinese, not limited to a single content display. Screw 4, which can adjust the tightness of the fixed plate with a thickness of 2-7mm, pluggable terminal 9, the spacing of the terminal is 3.5mm, and its ports are defined as the positive pole of the power supply, the negative pole of the power supply, start, pause, relay normally open and normally open Close the output.

The motherboard power supply circuit is connected to the motherboard power supply circuit, LCD screen control circuit, electronic switch output and optocoupler isolation input control circuit, relay output circuit and setting button, main control download debugging and motherboard temperature monitoring circuit through connecting wires.

The main board power supply circuit adopts U2 and U3 chips, and the pins 4, 5, 6, 7 and 8 of the U2 are connected in series with the pin 1 of U2 to connect the capacitor C1 and the capacitor C2, and the capacitor C1 and the capacitor C2 are connected in parallel, and the capacitor C1 Connect the self-recovery fuse FUI after connecting in parallel with the capacitor C2, the self-recovery fuse FUI is connected to the cathode of the diode D1 and then connected to the VCC power supply, the pin 2 of the U2 is connected to the diode D2, the capacitor C3, the capacitor C4, the capacitor C5 and the protection diode D3, and The diode D2, the capacitor C3, the capacitor C4, the capacitor C5 and the protection diode D3 are connected in parallel and grounded, and the pin 3 of the U2 is connected to the capacitor C3;

The pins 1 and 3 of the U3 are connected in series to a 5V power supply, and the pin 3 of the U3 is grounded, the pin 4 of the U3 is connected to the capacitor C7 and grounded, and the pin 5 of the U3 is connected to the capacitor C8, the capacitor C9 and the protection diode D4, The capacitor C8, the capacitor C9 and the protection diode D4 are connected in parallel and grounded.

Specifically: Please refer to Figure 3, which shows the power supply part of the motherboard, where D1 is a diode, which prevents the positive and negative poles of the power supply from being reversely connected, causing the motherboard to burn out; FU1 is a self-recovery fuse, which prevents the motherboard from short-circuiting. , the current is too large, at this time the fuse is in a high-impedance state, and the power supply is disconnected to protect other components of the motherboard; C1 and C2 are composed of input high-frequency and low-frequency filters, U2 is a DC-DC step-down chip, and L1 is a power inductor , the function is used for energy storage, using the fact that the voltage at both ends of the inductor cannot be mutated, to ensure the stability of the power output, D2 is a diode, and its function is to provide a freewheeling circuit during the shutdown period; C3/C4/C5 form an output high frequency And low-frequency filtering to ensure stable output voltage, D3 is the output voltage protection diode; LED1 is the power output indicator light, R1 is the indicator current limiting resistor

Among them, U3 is a low-dropout linear voltage regulator chip, which provides 3.3V voltage for the main control chip, C8/C9 is composed of output high-frequency and low-frequency filters, and D4 is an output voltage protection diode.

The LCD screen control circuit is connected to the full-color LCD screen 2 using a liquid crystal port, the pins 1, 2, 13 and 14 of the liquid crystal port are all grounded, and the pin 3 of the liquid crystal port is connected to the collector of the triode Q1, and the emitter of the triode Q1 The base of the triode Q1 is connected to the resistor R3 and the resistor R4, and the resistor R4 is connected to the ground, and the resistor R3 is connected to the pin 13 of the control board U1 of the mainboard power supply circuit.

Specifically: Figure 4 shows the LCD screen control circuit, in which the triode Q1 is the LCD screen backlight control switch, which controls the backlight on and off, normally shows that Q1 is on, and when it is in standby, Q1 is off, and R3 is the current limiting resistor of the triode Q1 , its function is to prevent the input triode current from being too large, and R4 is the pull-down resistor of the triode Q1, which keeps the triode at a low potential when the main control chip turns off the output of the triode.

The electronic switch output and the optocoupler isolation input control circuit adopt optocoupler J2 and optocoupler J3, the pin 1 of the optocoupler J2 is connected to the resistor R10, and the pin 2 of the optocoupler J2 is connected to the resistor R11, and the resistor R10 and the resistor R11 is connected to a 3.3V power supply, pin 3 of the optocoupler J2 is connected to resistor R12, and resistor R12 is connected to transistor Q3 and resistor R13, the emitter and collector of transistor Q3 are connected in parallel with diode D6, and resistor R13, the emitter of transistor Q3 Pole and diode D6 are grounded, the photocoupler J2 pin 4 is connected to the diode D6 negative pole and the pin 5 of the P0 port of the main control circuit, the photocoupler J3 pin 1 is connected to the 24V power supply, and the photocoupler J3 pin 2 is connected to the resistor R17 and resistor R18 are connected in parallel, the resistor R17 is connected to a 24V power supply, and the resistor R18 is connected to pin 3 of the P0 port of the main control circuit.

Specifically: Figure 5 shows the electronic switch isolation output and optocoupler isolation input, where Q3 is a Darlington transistor, used to control the load, low-level output; J2 is a photocoupler, which forms a control loop with R10/R11 , R10 is the optocoupler current-limiting resistor to prevent excessive current output, PB12 is the main control connection terminal, when the main control outputs low level, the optocoupler is turned on, and the transistor Q3 outputs low level, which is used to control the load on and off. J3 is the input signal isolation optocoupler, which forms a control loop with R17/R10. R18 is the optocoupler current-limiting resistor to prevent excessive input current. R17 is a pull-up resistor for pulling up the current point potential. PB10 is the main control connection terminal. When the optocoupler is turned on, PC10 is at low level. At this time, the main control will detect a valid signal, which is used to start the timing relay.

The main control circuit adopts the control board U1, and the pins 1, 24, 48 and 9 of the control board U1 are connected to the 3.3V power supply, and the pins 23, 47 and 8 of the control board U1 are grounded, and the pins 5 and 6 of the control board U1 are connected to the crystal oscillator Circuit, the pin 7 of the control board U1 is connected to the anode of the capacitor C10, the resistor R2 and the diode D7, and the capacitor C10, the resistor R2 and the diode D7 are connected in parallel, the resistor R2 and the diode D7 are connected to a 3.3V power supply, and the capacitor C10 is grounded

Specifically: Figure 6 shows the main control circuit of the main board, which is the core part of the entire main board, in which U1 is the main control chip, and D7/R2/C10 form the reset circuit of the main control chip. It is in a low level state for an instant, and is used for the overall reset of the main control chip. The reset time depends on the melting point of the C10 capacitor. The larger the capacity, the longer the reset time; Provides a clock signal. P2 is the input and output terminal, the positive pole of VCC power supply and the negative pole of GND power supply, IN1/IN2 respectively control the start and stop of the time relay, T-OUT is the electronic switch output, controlling the external load, NO/COM is the relay output, used to control the external load .

The relay output circuit adopts a photocoupler J1, the pins 1 and 2 of the photocoupler J1 are connected to the resistor R6 and the resistor R7, and the pin 3 of the photocoupler J1 is connected to the resistor R8, and the resistor R8 is connected to the resistor R9 and the transistor Q2, so The resistor R9 and the emitter of the triode Q2 are grounded, the collector of the triode Q2 is connected to the anode of the diode D5, and the diode D5 is connected to the relay K1 in parallel.

Specifically: Figure 7 shows the relay output control circuit, in which K1 is a relay, used to control the on-off of external AC and DC, Q2 is a relay switch to control the triode, and forms a control loop with R8/R9, which is used to control the opening and closing of the relay. Turn off, R8 is the current limiting resistor of the triode to prevent the input current of the triode from being too large, R9 is the pull-down resistor of the triode, and keeps the low level when the triode is turned off; D5 is a diode to prevent the back EMF generated when the DC relay is disconnected from affecting the circuit Or the components are damaged, the anti-parallel diode is to give a loop to the back EMF; J1 is a photocoupler, which forms a control loop with R6/R7, and R7 is the optocoupler current-limiting resistor to prevent the optocoupler input current from being too large.

The setting button, main control download debugging and main board temperature monitoring circuit are provided with button S1, button S2, button S3 and button S4, and the button S1, button S2, button S3 and button S4 are respectively connected in parallel with capacitor C13, capacitor C14, capacitor C15 and capacitor C16, and capacitor C13, capacitor C14, capacitor C15 and capacitor C16 are respectively connected to resistor R24, resistor R23, resistor R22 and resistor R21, and resistor R24, resistor R23, resistor R22 and resistor R21 are connected to a 3.3V power supply, the Button S1 , button S2 , button S3 and button S4 are connected to pins 41 , 42 , 43 , 44 and 45 of the control board U1 of the mainboard power supply circuit.

Specifically: Please refer to Figure 8. Figure 8 shows the circuit diagram of the motherboard setting button, main control download and debugging, and motherboard temperature monitoring. S1 is the setting button, C13 is the anti-shake capacitor for setting the button, and R24 is the pull-up resistor for setting the button signal ; S2 is the reset button, C14 is the reset button anti-shake capacitor, R23 is the reset button signal pull-up resistor; S3 is the left shift button, C15 is the left shift button anti-shake capacitor, R22 is the left shift button signal pull-up resistor; S4 is for adding buttons, C16 is for adding anti-shake capacitors for buttons, and R21 is for adding pull-up resistors for button signals; all the above button signals are valid at low level. P3 is the main control chip download and debugging port, U4 is the temperature control measurement chip, which is used to test the real-time temperature of the main board when it is working. If the temperature is too high, the main board will not work.

Further speaking: Hongfa relay 16 refers to all relays in the circuit, diode 12 refers to all diodes in the circuit, and inductance 10 refers to all inductances in the circuit. In order to make the main board work stably, all components are selected from practical, stable and reliable devices. The installed Hongfa relay 16 has the advantages of stronger mechanical life and more stability; the capacitor uses an all-solid capacitor 11, which has the advantage of being more stable in a continuous high-temperature environment; the terminal post 9 uses a plug-in type, which is convenient for faster and more convenient replacement; Transistor 14 is used, which has a mute effect; the main board is made of SMT chip technology as a whole, and the performance is more stable; the fuse 13 uses a sub-return fuse, and the overvoltage is automatically disconnected; the diode 12 uses an anti-reverse polarity diode, which has It is enough to effectively avoid the damage caused by the wrong connection of positive and negative poles; the inductance 10 uses an integrated inductor, and the electromagnetic interference is smaller; the coupler uses an input and output isolation radio coupler, which has a certain degree of independence and will not cause mutual interference

A new type of ultra-thin visual time relay, the thickness of the ultra-thin shell 1 is 27mm, it adopts a full-color LCD screen, provides a Chinese visual operation interface, and adds an electronic switch to realize fast signal switching. In order to improve operability, press and hold the setting button for 2 seconds Enter the parameter setting interface, click the setting button to switch the parameter function, when entering the parameter setting interface, press and hold for 2 seconds to exit the setting interface (it will automatically exit after 10 seconds without any operation, and save the current setting parameters).

Output mode: transistor/relay, can realize output mode selection, output delay, realize output delay setting, operation mode: continuous cycle/single cycle, realize operation mode selection,

Display mode: hour/minute (hour: up to 99 hours, minutes, up to 59 minutes).

Transistor type: normally open/normally closed, select the transistor type, relay type: normally open/normally closed, select the relay type.

Power-on timing: ON/OFF ON: Automatic timing after power failure and restart/OFF: After power failure and restart, a start signal is required for timing. Preferred output sequence: synchronous output/transistor priority/relay priority, synchronous output: after the timing is over, the relay and transistor output at the same time (output synchronization, function remains unchanged), relay priority: after the timing is over, the relay outputs first, and the output After the timing ends, the transistor output starts again. After the transistor output timing ends, the transistor and the relay disconnect the output at the same time. The transistor has priority: after the timing ends, the transistor outputs first. After the output timing ends, the relay output starts again. After the relay output timing ends, The transistor and relay simultaneously disconnect the output.

On-off mode: synchronous disconnection/asynchronous disconnection (this option is only displayed when the output sequence selects transistor priority and relay priority) synchronous disconnection: when the output sequence selects relay priority or transistor priority, the former remains open after the output timing ends output, and disconnect at the same time after the latter timing is over,

Asynchronous disconnection: When the output sequence selects relay priority or transistor priority, the former disconnects the output immediately after the output timing ends, and then starts the latter output.

A transparent plate is installed in the protective cover corresponding to the position of the display screen, and the installation of the transparent plate in the protective cover corresponding to the position of the display screen can facilitate direct observation of the display screen. Observation and recording can be done directly from the transparent board.

A main board is fixedly installed in the ultra-thin visual time relay, and the surface of the main board is equipped with a main control chip, a power step-down chip, terminal posts, capacitors, inductors, fuses, diodes, photocouplers, triodes, LCD screens and Relays, the installed Hongfa relay host has the advantages of stronger mechanical life and more stability; the use of all-solid capacitors for capacitors has the advantage of being more stable in continuous high-temperature environments; Transistor, has the effect of mute; the main board is made of SMT chip technology as a whole, and the performance is more stable; The positive and negative poles are damaged due to wrong connection, which will affect the use; the inductor uses an integrally formed inductor, and the electromagnetic interference is smaller; the coupler uses an input and output isolation radio and television coupler, which has a certain degree of independence and will not cause mutual interference.

The above content is a further detailed description of the utility model in conjunction with specific embodiments. It cannot be determined that the specific implementation of the utility model is only limited to these descriptions. Under the premise of the invention, some simple deduction or replacement can also be made, which should be regarded as belonging to the protection scope determined by the claims submitted by the utility model.

Claims (8)

1. The utility model provides a novel ultra-thin visual time relay which characterized in that: the full-color LCD screen comprises an ultrathin shell (1), wherein a full-color LCD screen (2) is fixedly embedded at the front end of the ultrathin shell (1), and a parameter setting panel (3) is arranged at the lower part of the front end of the ultrathin shell (1); the novel ultra-thin shell comprises a left end and a right end of an ultra-thin shell (1), wherein the middle parts of the left end and the right end of the ultra-thin shell are fixedly connected with a fixing buckle (5), the middle parts of the fixing buckles (5) are respectively connected with a buckle fixing screw (4) through threads in a plugging mode, the rear end of the ultra-thin shell (1) is fixedly connected with a cover plate (6) through screws, the upper part of the rear end of the cover plate (6) is provided with a product nameplate (7), the lower part of the rear end of the cover plate (6) is fixedly connected with a pluggable binding post (9), and the cover plate (6) is provided with a binding post name definition mark (8) at the upper end of a plugging hole of the pluggable binding post (9);

the electronic switch comprises an ultrathin shell (1), wherein a main control circuit, a main board power supply circuit, an LCD screen control circuit, an electronic switch output and optocoupler isolation input control circuit, a relay output circuit, a setting button and a main control downloading debugging and main board temperature monitoring circuit are arranged in the ultrathin shell.

2. The novel ultrathin visual time relay according to claim 1, wherein: the main board power supply circuit is connected with the main board power supply circuit, the LCD screen control circuit, the electronic switch output and optocoupler isolation input control circuit, the relay output circuit, the setting button and the main control downloading debugging and main board temperature monitoring circuit through connecting wires.

3. The novel ultrathin visual time relay according to claim 1, wherein: the main board power supply circuit adopts U2 and U3 chips, pins 4, 5, 6, 7 and 8 of the U2 are connected in series and then connected with a capacitor C1 and a capacitor C2, the capacitor C1 and the capacitor C2 are connected in parallel, a self-recovery fuse FUI is connected after the capacitor C1 and the capacitor C2 are connected in parallel, the self-recovery fuse FUI is connected with a VCC power supply after the cathode of a diode D1, the pin 2 of the U2 is connected with a diode D2, a capacitor C3, a capacitor C4, a capacitor C5 and a protection diode D3, the diode D2, the capacitor C3, the capacitor C4, the capacitor C5 and the protection diode D3 are connected in parallel and then grounded, and the pin 3 of the U2 is connected with the capacitor C3;

the U3 is characterized in that the pins 1 and 3 of the U3 are connected in series and then connected with a 5V power supply, the pin 3 of the U3 is grounded, the pin 4 of the U3 is connected with the capacitor C7 and then grounded, the pin 5 of the U3 is connected with the capacitor C8, the capacitor C9 and the protection diode D4, and the capacitor C8, the capacitor C9 and the protection diode D4 are connected in parallel and then grounded.

4. The novel ultrathin visual time relay according to claim 1, wherein: the LCD screen control circuit is connected with the full-color LCD screen (2) by adopting a liquid crystal port, pins 1, 2, 13 and 14 of the liquid crystal port are all grounded, a pin 3 of the liquid crystal port is connected with a collector of a triode Q1, an emitter of the triode Q1 is grounded, a base of the triode Q1 is connected with a resistor R3 and a resistor R4, the resistor R4 is grounded, and the resistor R3 is connected with a control board U1 pin 13 of the main board power supply circuit.

5. The novel ultrathin visual time relay according to claim 1, wherein: the electronic switch output and optocoupler isolation input control circuit adopts a photoelectric coupler J2 and a photoelectric coupler J3, a resistor R10 is connected to a pin 1 of the photoelectric coupler J2, a resistor R11 is connected to a pin 2 of the photoelectric coupler J2, a resistor R10 and a resistor R11 are connected to a 3.3V power supply, a resistor R12 is connected to a pin 3 of the photoelectric coupler J2, a triode Q3 and a resistor R13 are connected to each other, an emitter and a collector of the triode Q3 are connected in parallel with a diode D6, the resistor R13, the emitter and the diode D6 of the triode Q3 are grounded, a pin 4 of the photoelectric coupler J2 is connected to a pin 5 of a P0 port of a diode D6 and a master control circuit, a pin 1 of the photoelectric coupler J3 is connected to a 24V power supply, a pin 2 of the photoelectric coupler J3 is connected to a resistor R17 and a resistor R18, the resistor R17 and the resistor R18 are connected in parallel, the resistor R17 is connected to a 24V power supply, and the resistor R18 is connected to a pin 3 of a P0 port of the master control circuit.

6. The novel ultrathin visual time relay according to claim 1, wherein: the main control circuit adopts control panel U1, and control panel U1 foot 1, 24, 48 and 9 connect 3.3V power, and control panel U1 foot 23, 47 and 8 ground connection, control panel U1 foot 5 and 6 connect the crystal oscillator circuit, control panel U1 foot 7 connects the positive pole of electric capacity C10, resistance R2 and diode D7, and electric capacity C10, resistance R2 and diode D7 are parallelly connected, 3.3V power is connected to resistance R2 and diode D7, and electric capacity C10 ground connection.

7. The novel ultrathin visual time relay according to claim 1, wherein: the relay output circuit adopts a photoelectric coupler J1, a resistor R6 and a resistor R7 are connected to pins 1 and 2 of the photoelectric coupler J1, a resistor R8 is connected to a pin 3 of the photoelectric coupler J1, a resistor R9 and a triode Q2 are connected to the resistor R8, the emitting electrodes of the resistor R9 and the triode Q2 are grounded, the collecting electrode of the triode Q2 is connected with the positive electrode of a diode D5, and the diode D5 is connected with a relay K1 in parallel.

8. The novel ultrathin visual time relay according to claim 1, wherein: the main control downloading debugging and mainboard temperature monitoring circuit is provided with a key S1, a key S2, a key S3 and a key S4, wherein the key S1, the key S2, the key S3 and the key S4 are respectively connected with a capacitor C13, a capacitor C14, a capacitor C15 and a capacitor C16 in parallel, the capacitor C13, the capacitor C14, the capacitor C15 and the capacitor C16 are respectively connected with a resistor R24, a resistor R23, a resistor R22 and a resistor R21, the resistor R24, the resistor R23, the resistor R22 and the resistor R21 are connected with a 3.3V power supply, and the key S1, the key S2, the key S3 and the key S4 are connected with control boards U1 pins 41, 42, 43, 44 and 45 of a mainboard power supply circuit.