Overvoltage and undervoltage circuit board and overvoltage and undervoltage protector

Abstract

An overvoltage and undervoltage circuit board and an overvoltage and undervoltage protector relate to the technical field of protectors, the overvoltage and undervoltage circuit board comprises a power supply circuit board and a digital display circuit board, the power supply circuit board is provided with a main power supply board used for welding electronic devices and two limiting clamping strips used for being matched with a protector shell; the two limiting clamping strips are arranged on the two sides of the main power panel respectively, the limiting clamping strips and the main power panel form a middle notch area, the shape of the middle notch area is matched with that of the digital display circuit board, the digital display circuit board is arranged in the middle notch area and connected with the power circuit board through the connecting piece, and the power circuit board, the connecting piece and the digital display circuit board are integrally machined and formed. When the power supply circuit board and the digital display circuit board are assembled, the power supply circuit board and the digital display circuit board are disconnected at the connecting piece to form an independent component, and the power supply circuit board and the digital display circuit board are spliced together in a crossed manner through a mortise and tenon joint structure, so that the assembly of the overvoltage and undervoltage circuit board of the overvoltage and undervoltage protector is realized; therefore, combination and assembly are facilitated, the assembly efficiency is improved, and the design is more reasonable.

Description

Technical Field

[0001] This application relates to the field of protection technology, and in particular to over / under voltage circuit boards and over / under voltage protectors. Background Technology

[0002] An over / under voltage protector is an electrical device that monitors the voltage status of a circuit and performs automatic protection. When the input voltage exceeds a preset threshold range, it prevents damage to electrical equipment due to abnormal voltage by cutting off the circuit or issuing an alarm signal. An over / under voltage protector typically consists of a protector housing and an over / under voltage circuit board housed within the housing. This circuit board includes a power supply circuit board, a digital display circuit board, and electronic components soldered onto the power supply / digital display circuit board. The power supply circuit board and the digital display circuit board are usually manufactured separately, requiring two circuit board manufacturing production lines, which increases production costs. Furthermore, existing over / under voltage circuit board designs are not sufficiently efficient, resulting in low assembly efficiency. Summary of the Invention

[0003] The purpose of this application is to provide an over / under voltage circuit board and an over / under voltage protector, which are reasonably designed, easy to assemble, and help reduce costs.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] In the first aspect, this application provides an over / under voltage circuit board, which includes a power supply circuit board and a digital display circuit board. The power supply circuit board is provided with a main power board for soldering electronic devices and two limiting strips for fitting with the protector housing. The two limiting strips are respectively located on both sides of the main power board and form a central recessed area with the main power board. The shape of the central recessed area is adapted to the shape of the digital display circuit board. The digital display circuit board is located in the central recessed area and is connected to the power supply circuit board through a connector. The power supply circuit board, the connector, and the digital display circuit board are integrally formed. When assembling the power supply circuit board and the digital display circuit board, the power supply circuit board and the digital display circuit board are separated at the connector to form independent components, and the power supply circuit board and the digital display circuit board are combined and spliced ​​together to realize the assembly of the over / under voltage circuit board of the over / under voltage protector.

[0006] Preferably, the power circuit board has a tenon protrusion on its edge, and the digital display circuit board has a mortise notch inside, with the tenon protrusion inserted into the mortise notch to achieve splicing and fixing.

[0007] Preferably, the connection between the connector and the power circuit board and / or the digital display circuit board is provided with a strip groove, and multiple through holes are arranged along the strip groove. When the connector is subjected to force, it breaks at the strip groove.

[0008] Preferably, the digital display circuit board has an identification notch on its edge to identify the assembly direction of the digital display circuit board and the power circuit board.

[0009] Preferably, the power circuit board has multiple soldering holes, into which the pins of electronic components are inserted to reduce wire connections.

[0010] Secondly, embodiments of this application provide an over / under voltage protector, including a protector housing, an over / under voltage circuit board, and electronic components soldered onto the over / under voltage circuit board. The over / under voltage circuit board includes a power circuit board and a digital display circuit board. The power circuit board has a main power board for soldering electronic components and two limiting strips for adapting to the protector housing. The two limiting strips are respectively located on both sides of the main power board and form a central recessed area with the main power board. The shape of the central recessed area is adapted to the shape of the digital display circuit board. The digital display circuit board is located in the central recessed area and is connected to the power circuit board through a connector. The power circuit board, the connector, and the digital display circuit board are integrally formed. When assembling the power circuit board and the digital display circuit board, the power circuit board and the digital display circuit board are disconnected at the connector to form independent components, and then the power circuit board and the digital display circuit board are combined and spliced ​​together. The limiting strips of the power circuit board are inserted into the protector housing to realize the assembly of the over / under voltage protector.

[0011] Preferably, the power circuit board has a tenon protrusion on its edge, and the digital display circuit board has a mortise notch inside, with the tenon protrusion inserted into the mortise notch to achieve splicing and fixing.

[0012] Preferably, the connection between the connector and the power circuit board and / or the digital display circuit board is provided with a strip groove, and multiple through holes are arranged along the strip groove. When the connector is subjected to force, it breaks at the strip groove.

[0013] Preferably, the digital display circuit board has an identification notch on its edge to identify the assembly direction of the digital display circuit board and the power circuit board.

[0014] Preferably, the power circuit board has multiple soldering holes, into which the pins of electronic components are inserted to reduce wire connections.

[0015] Compared to existing technologies, the beneficial effects of this application are as follows:

[0016] In the over / under voltage circuit board and over / under voltage protector provided in this application embodiment, the power supply circuit board and the digital display circuit board are an integral structure before assembly, which can be processed on a single circuit board processing production line without the need for additional production lines. Moreover, the digital display circuit board is designed inside the power supply circuit board, which can effectively reduce material costs. During the assembly of the over / under voltage circuit board, the power supply circuit board and the digital display circuit board, which are connected together, can be separated to make them independent components. Then, the separated power supply circuit board and the digital display circuit board are combined and spliced ​​together to fix the power supply circuit board and the digital display circuit board, thus completing the assembly of the over / under voltage circuit board. In this way, it is convenient to combine and assemble, which helps to improve assembly efficiency and the design is more reasonable. Attached Figure Description

[0017] Figure 1 The diagram shown is a structural schematic of the power circuit board and digital display circuit board before assembly according to Embodiment 1 of this application;

[0018] Figure 2 What is shown is Figure 1 Enlarged schematic diagram of the structure at point A;

[0019] Figure 3 The diagram shown is a structural schematic of the power circuit board and digital display circuit board after assembly according to Embodiment 1 of this application;

[0020] Figure 4 The diagram shown is a schematic planar structure diagram of the power supply circuit board and digital display circuit board according to Embodiment 1 of this application, with component markings.

[0021] Figure 5 The diagram shown is a schematic diagram of the internal structure of the over / under voltage protector according to Embodiment 2 of this application.

[0022] Figure labeling: 1. Power circuit board, 11. Main power board, 12. Limiting strip, 13. Middle recessed area, 14. Welding hole, 2. Digital display circuit board, 21. Identification recess, 3. Connector, 31. Strip groove, 32. Through hole, 4. Mortise and tenon structure, 41. Tenon protrusion, 42. Mortise recess, 5. Protector housing. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Example 1:

[0025] like Figures 1-3 As shown, this application embodiment provides an over / under voltage circuit board, which includes a power circuit board 1 and a digital display circuit board 2. Before assembly, the power circuit board 1 and the digital display circuit board 2 are the same circuit board. The power circuit board 1 is provided with a main power board 11 for soldering electronic devices and two limiting strips 12 for fitting with the protector housing. The two limiting strips 12 are respectively provided on both sides of the main power board 11 and form a middle recessed area 13 with the main power board 11. The shape of the middle recessed area 13 is adapted to the shape of the digital display circuit board 2, such as... Figure 1 As shown, the digital display circuit board 2 is located in the middle recessed area 13 and is connected to the power circuit board 1 through the connector 3. The power circuit board 1, the connector 3 and the digital display circuit board 2 are integrally formed. Figure 1The diagram shown is a simplified structural diagram of the power supply circuit board 1 and the digital display circuit board 2. Figure 4 The diagram shown is a planar structural schematic of power supply circuit board 1 and digital display circuit board 2 with component markings. It can be understood that after processes such as pattern transfer, etching, drilling, electroplating, solder mask treatment, and surface treatment, power supply circuit board 1 and digital display circuit board 2 are obtained as shown. Figure 4 The circuit board shown. When assembling the power supply circuit board 1 and the digital display circuit board 2, the power supply circuit board 1 and the digital display circuit board 2 are separated at the connector 3 to form independent components, and then combined and spliced ​​together, as shown. Figure 3 As shown, the power circuit board 1 and the digital display circuit board 2 can be separated into two independent components and then assembled together to realize the assembly of the over- and under-voltage circuit board of the over- and under-voltage protector.

[0026] Compared with the prior art, the power circuit board 1 and digital display circuit board 2 in the over / under voltage circuit board provided in this application embodiment are an integral structure before assembly, which can be processed on a single circuit board processing production line without the need for additional production lines. Moreover, the digital display circuit board 2 is designed inside the power circuit board 1, which can effectively reduce material costs. During the assembly of the over / under voltage circuit board, the power circuit board 1 and digital display circuit board 2, which are connected together, can be separated to make them independent components. Then, the separated power circuit board 1 and digital display circuit board 2 can be combined and spliced ​​together to fix the power circuit board 1 and digital display circuit board 2, thus completing the assembly of the over / under voltage circuit board. In this way, it is convenient to combine and assemble, which helps to improve assembly efficiency and the design is more reasonable.

[0027] like Figure 1 and Figure 3 As shown, the power circuit board 1 of this embodiment has a tenon protrusion 41 on its edge, and the digital display circuit board 2 has a mortise recess 42. That is, the tenon protrusion 41 and the mortise recess 42 constitute the mortise and tenon structure 4. The tenon protrusion 41 is inserted into the mortise recess 42 to achieve splicing and fixing. The power circuit board 1 and the digital display circuit board 2 are perpendicular to each other. In this way, there is no need to add other complicated connection structures, which facilitates assembly. It should be emphasized that in other preferred embodiments, the fixing is not limited to the use of mortise and tenon structure. The fixing can also be achieved by means of buckle structure, threaded locking structure, etc., so that the power circuit board 1 and the digital display circuit board 2 can be combined and fixed. These will not be described in detail here.

[0028] like Figure 1 and Figure 2As shown, the connector 3 in this embodiment of the application has a strip groove 31 at the connection between it and the power circuit board 1. The connector 3 also has a strip groove 31 at the connection between it and the digital display circuit board 2. Multiple through holes 32 are arranged along the strip groove 31. When the connector 3 is subjected to force, it breaks at the strip groove 31. The strip groove 31 has a certain depth, that is, it is thinnest at the strip groove 31. At the same time, multiple through holes 32 are evenly arranged in the direction of the strip groove 31. Therefore, the strip groove 31 is easier to break when subjected to external stress than other positions on the circuit board, thereby separating the power circuit board 1 and the digital display circuit board 2. Moreover, the break is straighter.

[0029] like Figure 1 and Figure 3 As shown, the digital display circuit board 2 in this embodiment of the application is provided with an identification notch 21 on its edge to identify the assembly direction of the digital display circuit board 2 and the power circuit board 1, so as to facilitate assembly.

[0030] like Figure 1 and Figure 3 As shown, the power circuit board 1 has multiple soldering holes 14. The pins of electronic components are inserted into the soldering holes 14 to reduce the number of wire connections. For example, the pins of relay components are inserted into the soldering holes 14 and fixed with solder, which can save the connecting wires and reduce material costs.

[0031] Example 2:

[0032] like Figure 5 As shown, this application embodiment provides an over / under voltage protector, including a protector housing 5, an over / under voltage circuit board, and electronic components (not shown) soldered to the over / under voltage circuit board. Figures 1-3 The over / under voltage protection circuit board includes a power circuit board 1 and a digital display circuit board 2. The power circuit board 1 is provided with a main power board 11 for soldering electronic components and two limiting strips 12 for fitting with the protector housing 5. The two limiting strips 12 are respectively provided on both sides of the main power board 11 and form a middle recessed area 13 with the main power board 11. The shape of the middle recessed area 13 is adapted to the shape of the digital display circuit board 2. The digital display circuit board 2 is located in the middle recessed area 13 and is connected to the power circuit board 1 through a connector 3. The power circuit board 1, the connector 3 and the digital display circuit board 2 are integrally formed. When assembling the power circuit board 1 and the digital display circuit board 2, the power circuit board 1 and the digital display circuit board 2 are separated at the connector 3 to form independent components, and the power circuit board 1 and the digital display circuit board 2 are combined and spliced ​​together. The limiting strips 12 of the power circuit board 1 are inserted into the protector housing 5 to realize the assembly of the over / under voltage protector.

[0033] Compared with the prior art, the power circuit board 1 and digital display circuit board 2 in the over / under voltage protector provided in this application are an integral structure before assembly, which can be processed on a single circuit board processing production line without the need for additional production lines. Moreover, the digital display circuit board 2 is designed inside the power circuit board 1, which can effectively reduce material costs. During the assembly of the over / under voltage circuit board, the power circuit board 1 and digital display circuit board 2, which are connected together, can be separated to make them independent components. Then, the separated power circuit board 1 and digital display circuit board 2 can be combined and spliced ​​together to fix the power circuit board 1 and digital display circuit board 2, thus completing the assembly of the over / under voltage circuit board. In this way, it is convenient to combine and assemble, which helps to improve assembly efficiency and the design is more reasonable.

[0034] Similar to Embodiment 1, the power circuit board 1 in this embodiment of the application has a tenon protrusion 41 on its edge, and a mortise recess 42 is provided in the digital display circuit board 2. The tenon protrusion 41 and the mortise recess 42 form a mortise and tenon structure 4. The tenon protrusion 41 is inserted into the mortise recess 42 to achieve splicing and fixing, without the need for additional complicated connection structures, which facilitates assembly. The connection between the connector 3 and the power circuit board 1 and / or the digital display circuit board 2 is provided with a strip groove 31, and multiple through holes 32 are arranged along the strip groove 31. When the connector 3 is subjected to force, it breaks at the strip groove 31. The strip groove 31 has a certain depth and multiple through holes 32. The through holes 32 are evenly arranged in the direction of the strip groove 31. Therefore, the strip groove 31 is more likely to break when subjected to external stress than other parts of the circuit board, thereby separating the power circuit board 1 and the digital display circuit board 2, and the break is straighter. The edge of the digital display circuit board 2 is provided with an identification notch 21 to identify the assembly direction of the digital display circuit board 2 and the power circuit board 1, which facilitates assembly. The power circuit board 1 is provided with multiple soldering holes 14. The pins of electronic components are inserted into the soldering holes 14 to reduce the number of wires. For example, the pins of relay components are inserted into the soldering holes 14 and fixed with solder, which can save the connecting wires and reduce material costs.

[0035] It needs to be emphasized that, Figure 5 The example shown is merely a simple illustration of an over / under voltage protector and does not constitute a limitation on the shape and structure of the protector housing. In fact, the shape, size, and internal structure of the protector housing of over / under voltage protectors vary. The design is based on the shape and size of the over / under voltage circuit board to better confine the circuit board within the protector housing, which will not be elaborated further here.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions created by the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions created by the present invention without departing from the essence and scope of the technical solutions created by the present invention.

Claims

1. An over / under voltage circuit board, characterized in that, The over / under voltage circuit board includes a power supply circuit board and a digital display circuit board. The power supply circuit board has a main power board for soldering electronic components and two limiting strips for fitting with the protector housing. The two limiting strips are respectively located on both sides of the main power board and form a central recessed area with the main power board. The shape of the central recessed area is adapted to the shape of the digital display circuit board. The digital display circuit board is located in the central recessed area and is connected to the power supply circuit board through a connector. The power supply circuit board, connector, and digital display circuit board are integrally formed. When assembling the power supply circuit board and the digital display circuit board, the power supply circuit board and the digital display circuit board are separated at the connector to form independent components, and then the power supply circuit board and the digital display circuit board are combined and spliced ​​together to realize the assembly of the over / under voltage circuit board of the over / under voltage protector.

2. The over / under voltage circuit board according to claim 1, characterized in that, The power circuit board has tenon protrusions on its edge, and the digital display circuit board has mortise recesses. The tenon protrusions are inserted into the mortise recesses to achieve splicing and fixing.

3. The over / under voltage circuit board according to claim 1, characterized in that, The connector is provided with a strip groove at the connection between the connector and the power circuit board and / or the digital display circuit board. Multiple through holes are arranged along the strip groove. The connector breaks at the strip groove when it is under force.

4. The over / under voltage circuit board according to claim 1, characterized in that, The digital display circuit board has an identification notch on its edge to identify the assembly direction of the digital display circuit board and the power circuit board.

5. The over / under voltage circuit board according to claim 1, characterized in that, The power circuit board has multiple solder holes into which the pins of electronic components are inserted to reduce the number of wire connections.

6. An over / under voltage protector, characterized in that, The device includes a protector housing, an over / under voltage circuit board, and electronic components soldered onto the over / under voltage circuit board. The over / under voltage circuit board includes a power circuit board and a digital display circuit board. The power circuit board has a main power board for soldering electronic components and two limiting strips for fitting with the protector housing. The two limiting strips are respectively located on both sides of the main power board and form a central recessed area with the main power board. The shape of the central recessed area is adapted to the shape of the digital display circuit board. The digital display circuit board is located in the central recessed area and is connected to the power circuit board through a connector. The power circuit board, connector, and digital display circuit board are integrally formed. When assembling the power circuit board and the digital display circuit board, the power circuit board and the digital display circuit board are separated at the connector to form independent components, and then combined and spliced ​​together. The limiting strips of the power circuit board are inserted into the protector housing to realize the assembly of the over / under voltage protector.

7. The over / under voltage protector according to claim 6, characterized in that, The power circuit board has tenon protrusions on its edge, and the digital display circuit board has mortise recesses. The tenon protrusions are inserted into the mortise recesses to achieve splicing and fixing.

8. The over / under voltage protector according to claim 6, characterized in that, The connector is provided with a strip groove at the connection between the connector and the power circuit board and / or the digital display circuit board. Multiple through holes are arranged along the strip groove. The connector breaks at the strip groove when it is under force.

9. The over / under voltage protector according to claim 6, characterized in that, The digital display circuit board has an identification notch on its edge to identify the assembly direction of the digital display circuit board and the power circuit board.

10. The over / under voltage protector according to claim 6, characterized in that, The power circuit board has multiple solder holes into which the pins of electronic components are inserted to reduce the number of wire connections.

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