A new type of rectifier junction box

Abstract

The invention discloses a novel rectifier junction box, comprising a junction box housing, a plastic core arranged in the junction box housing, a PCB circuit board assembled in the plastic core, a terminal connected to a power source, a first rectifier diode, a second rectifier diode and a resistor arranged on the upper surface of the PCB circuit board, a plug connected to a solenoid valve coil, a third rectifier diode and a fourth rectifier diode arranged on the lower surface of the PCB circuit board, the first rectifier diode, the second rectifier diode, the third rectifier diode, the fourth rectifier diode and the resistor are connected to form a bridge rectifier circuit, one end of the bridge rectifier circuit is connected to the terminal, and the other end is connected to the plug; a fixing plate is arranged above the PCB circuit board, a fixing screw is arranged at the center of the fixing plate, and the lower part of the fixing screw passes through a through hole on the PCB circuit board. The advantages are: reasonable and compact structure, convenient installation, and the ability to solve the AC noise phenomenon.

Description

Technical Field

[0001] The invention relates to the technical field of junction box manufacturing, in particular to a novel rectifier junction box. Background Art

[0002] The existing junction box plug and the terminal are connected by riveting, and then the plug is connected to the solenoid valve coil, and the terminal is connected to the power pole of the control power supply, so as to achieve electrical connection. When using the existing junction box, the solenoid valve will produce AC noise when using AC as the driving power source because it needs to pass the zero position twice in each cycle. Although the principle of magnetic ring division and the improvement of equipment accuracy can solve some AC noise problems, the effect is not ideal. In theory, a bridge rectifier circuit can be used to rectify the AC power to form a near-DC drive on the electromagnetic coil, thereby eliminating the AC noise. However, because the existing junction box plug and the terminal are riveted, the bridge rectifier circuit cannot be embedded and rectification cannot be achieved. Therefore, its structure needs to be further improved. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a new type of rectifier junction box with reasonable structure, compactness, convenient installation and the ability to solve the AC noise phenomenon in view of the current status of the prior art.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] A novel rectifier junction box comprises a junction box shell, a plastic core is arranged in the junction box shell, a PCB circuit board is assembled in the plastic core, a terminal connected to a power supply, a first rectifier diode, a second rectifier diode and a resistor are arranged on the upper surface of the PCB circuit board, a plug connected to a solenoid valve coil, a third rectifier diode and a fourth rectifier diode are arranged on the lower surface of the PCB circuit board, the first rectifier diode, the second rectifier diode, the third rectifier diode, the fourth rectifier diode and the resistor are connected to form a bridge rectifier circuit, one end of the bridge rectifier circuit is connected to the terminal, and the other end thereof is connected to the plug; a fixing plate is arranged above the PCB circuit board, a fixing screw is arranged at the center of the fixing plate, and the lower part of the fixing screw passes through a through hole on the PCB circuit board.

[0006] The optimized technical measures also include:

[0007] The above-mentioned PCB circuit board is also provided with an LED indicator light.

[0008] Buckle strips are arranged on both sides of the fixing plate, the lower side of the buckle strips is an inclined structure, and buckle grooves matching the buckle strips are arranged on the plastic core.

[0009] There are three above-mentioned terminals, namely the first terminal, the second terminal and the third terminal; the first terminal and the second terminal are connected to the power pole of the power supply, and the third terminal is connected to the ground pole of the power supply.

[0010] There are three plugs in total, namely the first plug, the second plug and the third plug; the first plug and the second plug are connected to the power supply pole of the solenoid valve coil, and the third plug is connected to the grounding pole of the solenoid valve coil.

[0011] The first terminal, the second terminal and the third terminal are arranged in a herringbone shape, the first terminal and the second terminal are arranged in parallel at the lower part of the herringbone shape, and the third terminal is arranged at the upper part of the herringbone shape.

[0012] The first plug-in sheet, the second plug-in sheet and the third plug-in sheet are distributed in a herringbone shape, the first plug-in sheet and the second plug-in sheet are arranged in parallel at the lower part of the herringbone shape, and the third plug-in sheet is arranged at the upper part of the herringbone shape.

[0013] The third plug is located below the gap between the first terminal and the second terminal.

[0014] A slot is provided on the fixing plate at a position corresponding to the terminal, and the terminal is engaged with the corresponding slot.

[0015] The fixing plate is provided with a boss, and after the fixing screw is screwed in and fixed, the head of the fixing screw is embedded in the boss.

[0016] The present invention discloses a novel rectifier junction box, which integrates a bridge rectifier circuit on a PCB circuit board, and through reasonable layout, fully utilizes the space on the upper and lower sides of the PCB circuit board, embeds the bridge rectifier circuit without changing the size of the existing junction box shell, realizes seamless switching with existing products, and is convenient to use; the bridge rectifier circuit is used to rectify the used alternating current to form a nearly direct current to drive the electromagnetic coil, thereby solving the problem of generating alternating current noise when using alternating current as a driving power source. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention after removing part of the shell;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the PCB circuit board and the fixing plate of the present invention;

[0020] Figure 4 yes Figure 3 The top view of the PCB circuit board;

[0021] Figure 5yes Figure 3 The top view of the PCB circuit board;

[0022] Figure 6 It is a diagram of the bridge rectifier circuit of the present invention and the output voltage after rectification. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below with reference to the accompanying drawings.

[0024] like Figures 1 to 6 Shown is a schematic diagram of the structure of the present invention,

[0025] The reference numerals are: resistance R L , a first rectifier diode D1, a second rectifier diode D2, a third rectifier diode D3, a fourth rectifier diode D4, a junction box shell 1, a plastic core 11, a buckle groove 11a, a PCB circuit board 2, a through hole 2a, an LED indicator light 21, a fixing plate 3, a buckle strip 31, a boss 32, a fixing screw 4, a first terminal 51, a second terminal 52, a third terminal 53, a first plug 61, a second plug 62, and a third plug 63.

[0026] like Figures 1 to 6 As shown,

[0027] A novel rectifier junction box includes a junction box housing 1, a plastic core 11 is arranged in the junction box housing 1, a PCB circuit board 2 is assembled in the plastic core 11, and a terminal connected to a power supply, a first rectifier diode D1, a second rectifier diode D2 and a resistor R are arranged on the upper surface of the PCB circuit board 2 L The lower surface of the PCB circuit board 2 is provided with a plug connected to the solenoid valve coil, a third rectifier diode D3 and a fourth rectifier diode D4, a first rectifier diode D1, a second rectifier diode D2, a third rectifier diode D3, a fourth rectifier diode D4 and a resistor R L The connection forms a bridge rectifier circuit, one end of the bridge rectifier circuit is connected to the terminal, and the other end is connected to the plug; a fixing plate 3 is arranged above the PCB circuit board 2, and a fixing screw 4 is arranged at the center of the fixing plate 3, and the lower part of the fixing screw 4 passes through the through hole 2a on the PCB circuit board 2.

[0028] In the embodiment, an LED indicator light 21 is also provided on the PCB circuit board 2 .

[0029] In the embodiment, buckle strips 31 are provided on both sides of the fixing plate 3 , the lower side of the buckle strips 31 is an inclined structure, and buckle grooves 11 a matching the buckle strips 31 are provided on the plastic core 11 .

[0030] In the embodiment, there are three terminals, namely a first terminal 51, a second terminal 52 and a third terminal 53; the first terminal 51 and the second terminal 52 are connected to the power pole of the power supply, and the third terminal 53 is connected to the ground pole of the power supply.

[0031] In the embodiment, there are three plugs, namely a first plug 61, a second plug 62 and a third plug 63; wherein the first plug 61 and the second plug 62 are connected to the power supply pole of the solenoid valve coil, and the third plug 63 is connected to the ground pole of the solenoid valve coil.

[0032] In the embodiment, the first terminal 51, the second terminal 52 and the third terminal 53 are arranged in a herringbone shape, the first terminal 51 and the second terminal 52 are arranged in parallel at the lower part of the herringbone shape, and the third terminal 53 is arranged at the upper part of the herringbone shape.

[0033] In the embodiment, the first plug 61, the second plug 62 and the third plug 63 are arranged in a herringbone shape, the first plug 61 and the second plug 62 are arranged in parallel at the lower part of the herringbone shape, and the third plug 63 is arranged at the upper part of the herringbone shape.

[0034] In the embodiment, the third inserting piece 63 is located below the gap between the first terminal 51 and the second terminal 52 .

[0035] In the embodiment, a slot is provided on the fixing plate 3 at a position corresponding to the terminal post, and the terminal post is engaged with the corresponding slot.

[0036] In the embodiment, a boss 32 is provided on the fixing plate 3, and after the fixing screw 4 is screwed in and fixed, the head of the fixing screw 4 is embedded in the boss 32.

[0037] The fixing plate 3 is snap-fitted with the three terminals through the slots, and has a compact structure; the fixing plate 3 is fixed with the buckle strip 31 and the buckle slot 11a on the plastic core 11, which greatly facilitates the installation and positioning of the PCB circuit board 2, and is finally fixed by the fixing screws 4.

[0038] The junction box of the present invention integrates a bridge rectifier circuit on a PCB circuit board 2, and through reasonable layout, fully utilizes the space on the upper and lower surfaces of the PCB circuit board 2. Without changing the size of the existing junction box shell, the bridge rectifier circuit is embedded, achieving seamless switching with existing products and convenient use.

[0039] The upper surface of the PCB circuit board 2 is provided with a terminal, a first rectifier diode D1, a second rectifier diode D2, a resistor R LAnd LED indicator 21 (when the junction box is turned on, LED indicator 21 lights up), the lower surface of the PCB circuit board 2 is provided with a plug-in, a third rectifier diode D3 and a fourth rectifier diode D4. The three terminals are distributed in a herringbone shape, and the three plug-ins are also distributed in a herringbone shape, and the two herringbone shapes are in opposite directions, so that the space on the PCB circuit board 2 can be fully utilized to avoid overlapping of connection points; the first rectifier diode D1 and the second rectifier diode D2 are arranged on both sides of the through hole 2a, the third rectifier diode D3 and the fourth rectifier diode D4 are also arranged on both sides of the through hole 2a, and the LED indicator 21 and the resistor R L They are arranged on both sides of the third terminal 53. By utilizing the space in this way, the overall structure is compact and the volume is small.

[0040] like Figure 6 As shown, the first rectifier diode D1, the second rectifier diode D2, the third rectifier diode D3, the fourth rectifier diode D4 and the resistor R L The bridge rectifier circuit is connected to form a bridge rectifier circuit. One end of the bridge rectifier circuit is connected to the terminal, and the other end is connected to the plug. The principle of the bridge rectifier circuit is to use four rectifier diodes to form a rectifier bridge. When the input voltage is in the positive half cycle of the AC voltage, the first rectifier diode D1 and the resistor R L (load), the third rectifier diode D3 is turned on to form a loop; when the input voltage is in the negative half cycle of the AC voltage, the second rectifier diode D2, the resistor R L (load), the fourth rectifier diode D4 is turned on to form a loop, thereby outputting a pulsating voltage with a constant direction. The alternating current used is rectified by a bridge rectifier circuit to form a nearly direct current drive on the electromagnetic coil, thereby solving the problem of AC noise when using AC as a driving power source; when using this rectifier junction box, when using AC drive, it is not even necessary to install a magnetic splitter ring on the static iron core of the pilot head, which reduces the manufacturing difficulty and cost of the pilot head, and solves the problem of AC noise at the same time, killing two birds with one stone.

[0041] The best embodiment of the present invention has been described, and various changes or modifications made by those skilled in the art will not depart from the scope of the present invention.

Claims

1. A rectifier junction box, comprising a junction box housing (1), wherein a plastic core (11) is arranged in the junction box housing (1), wherein: The plastic core (11) is equipped with a PCB circuit board (2). The upper surface of the PCB circuit board (2) is provided with a terminal connected to a power source, a first rectifier diode (D1), a second rectifier diode (D2) and a resistor (RL). The lower surface of the PCB circuit board (2) is provided with a plug-in connected to the solenoid valve coil, a third rectifier diode (D3) and a fourth rectifier diode (D4). The first rectifier diode (D1), the second rectifier diode (D2), the third rectifier diode (D3), the fourth rectifier diode (D4) and the resistor (RL) are connected to form a bridge rectifier circuit. One end of the bridge rectifier circuit is connected to the terminal, and the other end is connected to the plug-in. A fixing plate (3) is provided above the PCB circuit board (2). A fixing screw (4) is provided at the center of the fixing plate (3). The lower part of the fixing screw (4) passes through a through hole (2a) on the PCB circuit board (2). Buckle strips (31) are arranged on both sides of the fixing plate (3), the lower side of the buckle strip (31) is an inclined structure, and the plastic core (11) is provided with buckle grooves (11a) adapted to the buckle strip (31); There are three binding posts, namely a first binding post (51), a second binding post (52) and a third binding post (53); wherein the first binding post (51) and the second binding post (52) are connected to the power supply pole of the power supply, and the third binding post (53) is connected to the ground pole of the power supply; There are three plug-ins in total, namely a first plug-in (61), a second plug-in (62) and a third plug-in (63); wherein the first plug-in (61) and the second plug-in (62) are connected to the power supply pole of the solenoid valve coil, and the third plug-in (63) is connected to the grounding pole of the solenoid valve coil; The first binding post (51), the second binding post (52) and the third binding post (53) are arranged in a herringbone shape, the first binding post (51) and the second binding post (52) are arranged in parallel at the bottom of the herringbone shape, and the third binding post (53) is arranged at the top of the herringbone shape; The first plug piece (61), the second plug piece (62) and the third plug piece (63) are distributed in a herringbone shape. The first plug piece (61) and the second plug piece (62) are arranged in parallel at the bottom of the herringbone shape, and the third plug piece (63) is arranged at the top of the herringbone shape.

2. A rectifier junction box according to claim 1, characterized in that: The PCB circuit board (2) is also provided with an LED indicator light (21).

3. A rectifier junction box according to claim 2, characterized in that: The third inserting piece (63) is located below the gap between the first terminal (51) and the second terminal (52).

4. A rectifier junction box according to claim 3, characterized in that: A slot is provided on the fixing plate (3) at a position corresponding to the terminal, and the terminal is engaged with the corresponding slot.

5. A rectifier junction box according to claim 4, characterized in that The fixing plate (3) is provided with a boss (32), and after the fixing screw (4) is screwed in and fixed, the head of the fixing screw (4) is embedded in the boss (32).

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