CN220775630U

CN220775630U - Wiring-saving terminal block

Info

Publication number: CN220775630U
Application number: CN202322210596.5U
Authority: CN
Inventors: 谢坤松
Original assignee: O Dear International Corp ltd
Current assignee: O Dear International Corp ltd
Priority date: 2023-04-07
Filing date: 2023-08-17
Publication date: 2024-04-12
Anticipated expiration: 2033-08-17
Also published as: TWM644180U

Abstract

The utility model provides a wiring-saving terminal block, which belongs to the field of terminal blocks and comprises: the device comprises a selection unit, a rectifying unit, a voltage stabilizing unit, a matching unit, a switch unit, a terminal connecting seat and an indicating unit. The selection unit provides at least two power modes to receive corresponding input power. The rectifying unit converts an input power supply into a working power supply. The voltage stabilizing unit converts the working power supply into a stable working power supply, and then the stable working power supply is converted into a matched power supply through the matching unit. When the switch unit receives the matching power supply, the input/output port of the terminal connecting seat is enabled to transmit signals to the common contact of the programmable logic controller. The power-saving wiring terminal block has the functions of receiving full-voltage input signals (for example, 5V-240 VAC/DC) and having power isolation protection.

Description

Wiring-saving terminal block

Technical Field

The present utility model relates to a terminal block as a connector of a programmable logic controller (programmable logic controller, PLC), and more particularly to a wiring-saving terminal block having ac/dc input isolation.

Background

The existing PLC can only receive a power signal with fixed voltage. Therefore, for the power signals with different voltages, other circuits are often required to be connected, for example: a differential amplifier (differential amplifier). However, defects generated in the communication of other circuits may include: increasing the complexity of wiring, being prone to electromagnetic interference, etc.

Further, the conventional terminal block does not have a circuit protection configuration such as: prevent non-return burn or power isolation protection. And cannot be applied elastically, such as: cannot be applied to a decentralized architecture, and may have limitations in the application of PNP or NPN. The above-mentioned drawbacks make it necessary for the operator to confirm the compatibility of the terminal block and then to perform the operation, which is time-consuming and labor-consuming and also increases the burden of many operations.

In view of this, it is an object of the present utility model to provide a power-saving terminal block capable of receiving a full-voltage input signal (e.g., 5V-240 VAC/DC) and having power isolation protection.

Disclosure of Invention

According to an object of the present utility model, an embodiment of the present utility model provides a power-saving wiring terminal block including: the device comprises a selection unit, a rectifying unit, a voltage stabilizing unit, a matching unit, a switch unit and a terminal connecting seat.

Specifically, the selection unit receives a first selection signal and switches to a first power mode according to the first selection signal, or receives a second selection signal and switches to a second power mode according to the second selection signal. The rectifying unit is connected with the selecting unit, and receives a first input power source according to a first power source mode to be converted into a working power source, or receives a second input power source according to a second power source mode to be converted into the working power source. The voltage stabilizing unit is connected with the rectifying unit to convert the working power supply into a stable working power supply. The matching unit is connected with the voltage stabilizing unit to convert the stable working power supply into a matching power supply. The switch unit is connected with the matching unit, and is in an on state when the switch unit receives the matching power supply, and is in an off state when the switch unit does not receive the matching power supply. The terminal connecting seat is connected with the switch unit and the programmable logic controller, and transmits signals to the programmable logic controller when the switch unit is in an on state, and interrupts transmitting signals to the programmable logic controller when the switch unit is in an off state.

In summary, the beneficial effects of the utility model are as follows: (1) The power-saving wiring terminal block provided by the utility model can convert an input power signal and then transmit the converted power signal to a programmable logic controller (such as an input signal of an input/output port), and a differential amplifier is not required to be additionally arranged; (2) A bearing (1) for providing an input for receiving an alternating current/direct current signal (AC/DC) by means of a rectifying unit; (3) The bearing (1) provides an input for receiving a full voltage signal (5V-240V) through the rectifying unit; (4) The bearing (1) realizes a mechanism of signal isolation protection through the voltage stabilizing unit and the matching unit; (5) The utility model is applicable to a distributed architecture, and can be applied to a PNP or NPN programmable logic controller.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a power-saving terminal block according to an embodiment of the utility model;

FIG. 2 is an external view schematically showing a power-saving terminal block according to an embodiment of the present utility model;

FIG. 3 is a circuit diagram of a power-saving terminal block according to an embodiment of the present utility model;

fig. 4 is a partial enlarged circuit diagram of a rectifying unit in a power saving wiring terminal according to an embodiment of the present utility model;

FIG. 5 is a partial enlarged circuit diagram of a voltage stabilizing unit in a power saving wiring terminal according to an embodiment of the present utility model;

fig. 6 is a partial enlarged circuit diagram of a matching unit in a power saving wiring terminal according to an embodiment of the present utility model;

fig. 7 is a flowchart of an implementation of the power saving terminal block according to an embodiment of the present utility model.

Symbol description:

100: provincial wiring terminal block, 102: selection units 1022, 1024: jumper connector, 104: rectifying unit, 104a: first power input, 104b: second power input, 106: voltage stabilizing unit, 1062: first resistor, 1064: a zener diode, 108: matching unit, 1082: second resistance, 1084: first capacitance, 110: switching unit, 112: terminal connection base, 114: indication unit, 120: slot, 200: programmable logic controller, 700-810: and (3) step (c).

Detailed Description

For understanding of the features, aspects and advantages of the present utility model, as well as the capabilities and features of the present utility model, reference should be made to the following detailed description of the embodiments of the present utility model with reference to the accompanying drawings, in which the main matters of the drawings are only schematic and auxiliary to the descriptions, and not necessarily the actual proportion or exact arrangement of the present utility model after implementation, so that the proportion or arrangement of the drawings should not be interpreted or limited to the actual scope of the claims.

Referring to fig. 1, fig. 1 is a schematic diagram of an architecture of a power-saving terminal block according to an embodiment of the utility model.

As shown in fig. 1, according to an embodiment, there is provided a power-saving terminal block 100 including: a selection unit 102, a rectification unit 104, a voltage stabilizing unit 106, a matching unit 108, a switching unit 110, and a terminal connection base 112. The power-saving terminal block 100 may be, for example, an electronic device and/or a logic circuit including a Microprocessor (Microprocessor).

The selection unit 102 receives a first selection signal to switch to a first power mode or receives a second selection signal to switch to a second power mode. Wherein the first power mode may be, for example, a small voltage (5V-48V) mode; the second power mode may be, for example, a large voltage (48V to 220V) mode.

The rectifying unit 104 is connected to the selecting unit 102, and the rectifying unit 104 receives a first input power according to a first power mode to convert to an operating power, or the rectifying unit 104 receives a second input power according to a second power mode to convert to an operating power. The first input power source can be, for example, a voltage power source between 5V and 48V; the second input power is, for example, a voltage power between 48V and 220V.

The voltage stabilizing unit 106 is connected to the rectifying unit 104 to convert the operating power into a stable operating power.

The matching unit 108 is connected to the voltage stabilizing unit 106 to convert the stable operating power into a matching power.

The switch unit 110 is connected with the matching unit 108, and the switch unit 110 is in an on state when receiving a matching power supply; and the switch unit 110 is turned off when it does not receive the matching power.

The terminal connection base 112 is connected to the switch unit 110 and the programmable logic controller 200, and when the switch unit 110 is in an on state, the terminal connection base 112 transmits a signal to the programmable logic controller 200; while in the off state of the switch unit 110, the terminal connection block 112 interrupts the transmission of the signal to the programmable logic controller.

In accordance with another embodiment, as shown in fig. 2, the common contact connection terminal of the programmable logic controller 200 is connected to one of the input/output ports 112. The connection portions of the programmable logic controller 200 can be expanded as needed to connect with other terminal connection bases. In contrast, when the programmable logic controller 200 is connected to other terminal connection bases, the corresponding rectifying unit, voltage stabilizing unit, matching unit and switching unit are also required to be configured.

According to yet another embodiment, the power-saving terminal block 100 further includes an indication unit 114, where the indication unit 114 is connected to the switch unit 110, and the indication unit 114 outputs an indication signal indicating that the first input power or the second input power has been received in a state where the terminal connection base 112 is signal-connected to the programmable logic controller 200. The indication unit 114 may be, for example, a light-emitting diode (LED) or any medium capable of converting electric energy into light energy.

Please refer to fig. 1-2. Fig. 2 is an external view schematically showing a power-saving terminal block according to an embodiment of the present utility model.

Referring to fig. 1 to 2, according to another embodiment, the selecting unit 102 is two jumper connectors (1022, 1024), wherein the two jumper connectors (1022, 1024) are in a first power mode when they are inserted into jumper terminals, and the two jumper connectors (1022, 1024) are in a second power mode when they are not inserted into jumper terminals. Taking fig. 2 as an example, two jumper connectors (1022, 1024) are inserted into jumper terminals, for example, a small voltage mode (5V to 48V), that is, a Jumper (JUMP) is installed; conversely, when two jumper connectors (1022, 1024) are not inserted into jumper terminals, the state may be, for example, a large voltage mode (48V to 220V), that is, a state in which the Jumper (JUMP) is removed.

According to another embodiment, the two jumper connectors (1022, 1024) may be in the second power mode when they are inserted into the jumper terminals, and the two jumper connectors (1022, 1024) may be in the first power mode when they are not inserted into the jumper terminals, as required by the configuration.

As shown in fig. 1-2, according to another embodiment, the power-saving terminal block 100 further includes a slot 120, and the slot 120 is in signal connection with the selecting unit 102, and provides an IDC (insulation displacement connector) connector connection to receive the first input power or the second input power.

Please refer to fig. 3-4. Fig. 3 is a circuit diagram of a power-saving terminal block according to an embodiment of the present utility model. Fig. 4 is a partial enlarged circuit diagram of a rectifying unit in a power saving wiring terminal according to an embodiment of the present utility model.

According to another embodiment, the rectifying unit 104 is a bridge rectifier, the first power input end 104a and the second power input end 104b of the bridge rectifier are connected to the first input power or the second input power, the bridge rectifier is full-wave rectification when receiving the first power mode, the bridge rectifier is half-wave rectification when receiving the second power mode, and the first power output end and the second power output end of the bridge rectifier output the working power.

Please refer to fig. 3-5. Fig. 5 is a partial enlarged circuit diagram of a voltage stabilizing unit in a power saving wiring terminal according to an embodiment of the present utility model.

According to a further embodiment, the voltage stabilizing unit 106 further includes a first resistor 1062 and a zener diode 1064. One end of the first resistor 1062 is connected to the first power output terminal. One end of the zener diode 1064 is connected to the other end of the first resistor 1062, and the other end of the zener diode 1064 is connected to the second power output end.

Please refer to fig. 3-6. Fig. 6 is a partial enlarged circuit diagram of a matching unit in a power saving wiring terminal according to an embodiment of the present utility model.

According to a further embodiment, wherein the matching unit 108 further comprises: a second resistor 1082 and a first capacitor 1084. One end of the second resistor 1082 is connected to the switch unit 110; one end of the first capacitor 1084 is connected to the other end of the second resistor 1082, and the other end of the first capacitor 1084 is connected to the other end of the zener diode 1064. As shown in fig. 3, the line between the second resistor 1082 and the first capacitor 1084 is connected to the line between the first resistor 1062 and the zener diode 1064.

According to another embodiment, as shown in fig. 3-6, the switch unit 110 is an optical relay (also called an optical coupler), a first input end of the optical relay is connected to one end of the second resistor 1082, a second input end of the optical relay is connected to the other end of the first capacitor 1084, a first output end and a second output end of the optical relay are connected between the terminal connection base 112 and the bridge rectifier, and the switch unit is in an on state when the first input end and the second input end of the optical relay receive the matching power, and at this time, the common connection point of the output port of the terminal connection base 112 and the programmable logic controller 200 is turned on. The above-mentioned conduction mode can be applied to transmit digital signals or analog signals.

According to still another embodiment, as shown in fig. 3, when the indication unit 114 is a light emitting diode, two ends of the light emitting diode are respectively connected to the first output terminal and the second output terminal of the optical relay 114.

Please refer to fig. 7. Fig. 7 is a flowchart of an implementation of the power-saving terminal block according to an embodiment of the present utility model, including steps 700 to 810, which are described in detail below.

The IDC terminals are connected to the slots as in step 700.

If step 710, selecting a power mode, if a first power mode is selected, continuing steps 720-750; if the second power mode is selected, the process goes to steps 760 to 790. As shown in fig. 2 in particular, the insertion of two jumper connectors (1022, 1024) into the jumper terminals is in a first power mode, i.e., a state in which Jumpers (JUMPs) are installed; conversely, pulling out the jumper terminals from both jumper connectors (1022, 1024) is the second power mode, i.e., the state of removing the Jumpers (JUMPs).

Steps 720 to 750 of selecting the first power mode are described in detail below.

In step 720, a first power mode is applied, and the input power is between 5V and 48V in the first power mode.

At step 730, the power supply is awaited.

If step 740 is performed, if yes, then step 750 is continued; if not, return to step 730.

In step 750, the optical relay is driven in the first power mode, and the process jumps to step 800.

Steps 760 to 790 of selecting the second power mode are described in detail below.

In step 760, a second power mode is applied, in which the input power is between 48V and 220V).

As in step 770, the power supply is awaited.

If step 780, if the input current is input, then step 790 is continued; if not, return to step 770.

In step 790, the optical relay is driven in the second power mode, and step 800 is continued.

In step 800, the input/output ports of the terminal connection base and the common contact of the programmable logic controller are turned on.

In step 810, the programmable logic controller receives the signals from the input/output ports of the terminal connection block to convert the 5V-240V power signals into signals of the programmable logic controller.

Specifically, the power-saving wiring terminal block provided by the utility model can realize: (1) Receiving an alternating current-direct current full-voltage signal (such as a 5V-240 VAC/DC full-voltage input signal) through a bridge rectifier; (2) The voltage of the sodium diode is stabilized to reach the voltage stabilization, and the optical relay is driven by the matching resistor; (3) The power isolation protection is realized by connecting the optical relay (for example, the voltage influence generated by lightning, electrostatic discharge, electromagnetic interference, switching pulse or power disturbance is prevented); (4) And triggering the I/O point of the terminal connecting seat through the optical relay, and sending the trigger signal to the programmable logic controller.

Accordingly, the I/O point trigger of the optical relay configured in the present utility model can prevent the non-return burn and at the same time provide the elasticity for the PNP type transistor or the NPN type transistor. And by applying the I/O control point of the optical relay, various modules can be connected in series for use, so that the input voltage is distributed in various areas by small points, and the effect of saving wires is achieved.

The advantages, features and technical effects achieved will be more readily understood from the following more detailed description of the exemplary embodiments and the accompanying drawings, and the utility model may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed to provide those skilled in the art with a more thorough and complete scope of the utility model, and the utility model will be defined only by the appended claims.

Claims

1. A power-saving wiring terminal block, characterized in that the power-saving wiring terminal block comprises:

the selection unit receives a first selection signal and is switched to a first power supply mode according to the first selection signal, or receives a second selection signal and is switched to a second power supply mode according to the second selection signal;

the rectifying unit is connected with the selection unit, receives a first input power supply according to the first power supply mode to be converted into a working power supply, or receives a second input power supply according to the second power supply mode to be converted into the working power supply;

the voltage stabilizing unit is connected with the rectifying unit to convert the working power supply into a stable working power supply;

the matching unit is connected with the voltage stabilizing unit to convert the stable working power supply into a matching power supply;

the switch unit is connected with the matching unit, is in an on state when the switch unit receives the matching power supply, and is in an off state when the switch unit does not receive the matching power supply; and

the terminal connecting seat is connected with the switch unit and a programmable logic controller, and transmits signals to the programmable logic controller when the switch unit is in an on state, and interrupts transmitting signals to the programmable logic controller when the switch unit is in an off state.

2. The power saving terminal block according to claim 1, further comprising an indication unit connected to the switch unit, wherein the indication unit outputs an indication signal indicating that the first input power or the second input power has been received in a state that the terminal connection base signal is connected to the programmable logic controller.

3. The power saving terminal block according to claim 1, wherein the selecting unit is two jumper connectors, the two jumper connectors being in a first power mode in a state of being inserted into one jumper terminal, and the two jumper connectors being in a second power mode in a state of not being inserted into the jumper terminal.

4. The power saving terminal block according to claim 1, wherein the selecting unit is two jumper connectors, the two jumper connectors being in the second power mode in a state of being inserted into one jumper terminal, and the two jumper connectors being in the first power mode in a state of not being inserted into the jumper terminal.

5. The power-saving terminal block according to claim 2, wherein the rectifying unit is a bridge rectifier, a first power input end and a second power input end of the bridge rectifier are connected to the first input power source or the second input power source, the bridge rectifier is full-wave rectification when receiving the first power mode, the bridge rectifier is half-wave rectification when receiving the second power mode, and the first power output end and the second power output end of the bridge rectifier output working power sources.

6. The power saving terminal block according to claim 5, wherein the voltage stabilizing unit includes:

one end of the first resistor is connected with the first power supply output end of the bridge rectifier; and

and one end of the base nano diode is connected with the other end of the first resistor, and the other end of the base nano diode is connected with the second power output end of the bridge rectifier.

7. The power saving terminal block according to claim 6, wherein the matching unit comprises:

one end of the second resistor is connected with the switch unit; and

a first capacitor, one end of the first capacitor is connected with the other end of the second resistor, the other end of the first capacitor is connected with the other end of the base nano diode,

wherein a line between the second resistor and the first capacitor is connected to a line between the first resistor and the zener diode.

8. The power-saving terminal block according to claim 7, wherein the switching unit is an optical relay, a first input terminal of the optical relay is connected to one end of the second resistor, and a second input terminal of the optical relay is connected to the other end of the first capacitor.

9. The power saving terminal block of claim 8, wherein the indication unit is a light emitting diode, and both ends of the light emitting diode are respectively connected to the first output end and the second output end of the optical relay.

10. The power-saving terminal block of claim 1, further comprising a socket, the socket being signally connected to the selection unit and providing an IDC terminal connection for receiving either the first input power or the second input power.