CN216719835U

CN216719835U - Relay module for increasing creepage distance

Info

Publication number: CN216719835U
Application number: CN202123439640.7U
Authority: CN
Inventors: 李坤峰; 刘金枪; 邱桂林
Original assignee: Xiamen Hongfa Electroacoustic Co Ltd
Current assignee: Xiamen Hongfa Electroacoustic Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-10
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a relay module for increasing creepage distance, which comprises a PCB (printed Circuit Board), a plurality of relays and output wiring terminals, wherein the relays and the output wiring terminals are arranged on the PCB; and the bottom end of the output wiring terminal is provided with a blocking part between every two adjacent groups of pins respectively, and the blocking part separates the two groups of pins adjacent to the blocking part. The utility model can increase the creepage distance between the pins of the adjacent groups by using the blocking part, thereby meeting the requirement of the creepage distance for 300V industry, improving the withstand voltage of the product and improving the reliability of the product.

Description

Relay module for increasing creepage distance

Technical Field

The utility model relates to the technical field of relays, in particular to a relay module for increasing creepage distance.

Background

Currently, with the improvement of the living standard of people, the application of intelligent devices and instruments and meters in the field of industrial control becomes more and more extensive, and the industrial control automation technology is developing towards intellectualization, networking and integration. With the improvement of industrial control technology, the requirements on the relay module used in the control field are more strict, and according to the IEC61812-12021ED3 related standard, the 300V industrial creepage distance is required to be 3 mm.

At present, the creepage distance between each group of pins of the output terminal of the relay module in the prior art is limited by the distance between the pins of the adjacent groups, which results in that the creepage distance on the output side of the relay module is limited and does not meet the requirement of the creepage distance for 300V industrial use.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems in the prior art, the utility model provides a relay module for increasing creepage distance.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a relay module for increasing creepage distance comprises a PCB, and a plurality of relays and output connecting terminals which are arranged on the PCB, wherein the output connecting terminals are provided with a plurality of groups of pins which are distributed along a preset direction and correspond to the relays one by one, and each group comprises a plurality of pins; and the bottom end of the output wiring terminal is provided with a blocking part between every two adjacent groups of pins respectively, and the blocking part separates the two groups of pins adjacent to the blocking part.

Furthermore, the blocking part comprises at least one vertical baffle, and the length direction of the baffle is perpendicular to the preset direction.

Further, the bottom end of the baffle is flush with the bottom end of the pin, or the bottom end of the baffle is lower than the bottom end of the pin.

Furthermore, a plurality of pins of each group are distributed along the length direction of the baffle respectively.

Further, the relays are distributed along the preset direction.

Furthermore, each pin respectively passes downwards a pin hole correspondingly arranged on the PCB, and the blocking part passes downwards a through hole correspondingly arranged on the PCB.

Furthermore, the PCB further comprises an input wiring terminal which is arranged on the PCB, and the relays are positioned between the input wiring terminal and the output wiring terminal.

Further, the input wiring terminal and the output wiring terminal are respectively spring wiring terminals.

Further, the PCB comprises a base, wherein the PCB is arranged on the base; the locking device is characterized by further comprising a locking block, wherein the locking block is arranged at the bottom of one end of the base in a sliding mode, one end of the locking block in the sliding direction is located below the base, and a clamping block used for clamping the guide rail is arranged.

The relay socket further comprises a shell with an opening at the lower end, the shell is connected with the base, and the plurality of relays are contained in a shell cavity of the shell; the PCB is provided with a plurality of light-emitting light sources which are in one-to-one correspondence with the relays, the shell is provided with a plurality of light guide columns which are in one-to-one correspondence with the light-emitting light sources, and the bottom ends of the light guide columns face the corresponding light-emitting light sources respectively.

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

1. because the bottom end of the output wiring terminal is respectively provided with the baffle part between every two adjacent groups of pins, and the baffle part separates the two adjacent groups of pins, the creepage distance between the adjacent groups of pins can be increased by utilizing the baffle part, so that the creepage distance requirement for 300V industry can be met, the withstand voltage of a product is improved, and the reliability of the product is improved.

2. The baffle part comprises at least one vertical baffle, and the length direction of the baffle is perpendicular to the preset direction, so that the baffle part is simple in structure and easy to process.

3. Each pin respectively downwards penetrates through the corresponding pin hole on the PCB, and the blocking part downwards penetrates through the corresponding through hole on the PCB, so that the blocking part can also effectively isolate the pins of adjacent groups in the PCB, and the withstand voltage of the product is effectively improved.

The utility model is further explained in detail with the accompanying drawings and the embodiments; however, the relay module for increasing the creepage distance according to the present invention is not limited to the embodiment.

Drawings

FIG. 1 is an exploded schematic view of the present invention;

fig. 2 is a schematic perspective view of an output terminal of the present invention;

fig. 3 is a perspective view of the assembled state of the PCB and the relay according to the present invention;

fig. 4 is a perspective view showing a structure of a PCB panel and input and output connection terminals, etc. in a combined state according to the present invention;

FIG. 5 is an enlarged partial schematic view of FIG. 4;

fig. 6 is a partial structure view of the PCB and the output connection terminal of the present invention in a combined state;

FIG. 7 is an enlarged schematic view of portion A of FIG. 6;

fig. 8 is a partial structural view of a prior art PCB board and output terminals in a combined state;

the PCB comprises a PCB board 1, a PCB board 11, pin holes 12, through holes 2, a relay 3, output connecting terminals 31, pins 32, a baffle plate 4, input connecting terminals 5, a base 51, mounting lugs 511, a second screw hole 6, a shell 7, a locking block 71, a clamping block 72, a first screw hole 73, an elastic deformation part 74, a clamping column 8 and a light guide column.

Detailed Description

Referring to fig. 1 to 8, the relay module for increasing a creepage distance according to the present invention includes a PCB 1, and a plurality of relays 2 and output terminals 3 disposed on the PCB 1, where the output terminals 3 have a plurality of groups of pins distributed along a predetermined direction and corresponding to the plurality of relays 2 one to one, and each group includes a plurality of pins 31. And the parts of the bottom ends of the output wiring terminals 3 between every two adjacent groups of pins are respectively provided with a blocking part, and the blocking parts separate the two groups of pins adjacent to the blocking parts. The preset direction is specifically the width direction of the PCB board 1.

In this embodiment, the blocking portion includes a vertical baffle 32, and the length direction of the baffle 32 is perpendicular to the predetermined direction. In other embodiments, the baffle portion includes at least two vertical baffles 32, and the two vertical baffles 32 are spaced apart along the predetermined direction.

In this embodiment, the bottom end of the baffle 32 is flush with the bottom end of the pin 31, or the bottom end of the baffle 32 is lower than the bottom end of the pin 31. Therefore, when the pins 31 respectively pass through the corresponding pin holes 11 of the PCB 1, the blocking portion (i.e., the baffle 32)) also passes through the corresponding through holes 12 of the PCB 1. The through hole 12 is long and matched with the baffle 32. Each pin 31 is welded and fixed with the corresponding pin control 11.

In this embodiment, the plurality of pins 31 in each group are respectively distributed along the length direction of the baffle 32, and each group of pins 31 includes two pins 31, but is not limited thereto.

In this embodiment, the present invention further includes an input terminal 4, the input terminal 4 is disposed on the PCB board 1, and the plurality of relays are located between the input terminal 4 and the output terminal 3. The input wiring terminal 4 and the output wiring terminal 3 are spring wiring terminals respectively.

In this embodiment, the present invention further includes a base 5, and the PCB board 1 is disposed on the base 5. The locking device also comprises a locking block 7, wherein the locking block 7 is arranged at the bottom of one end of the base 5 in a sliding manner, one end of the locking block 7 in the sliding direction is positioned below the base 5, and a clamping block 71 for clamping a guide rail is arranged; the other end of the locking block 7 in the sliding direction is located outside one end of the base 5 in the length direction, and is provided with a first screw hole 72 penetrating up and down. The number of the first screw holes 72 is one, but is not limited thereto, and in other embodiments, the number of the first screw holes is more than one. The locking piece 5 is provided with an elastic deformation part 73 between two ends in the sliding direction for driving the locking piece 7 to reset along the direction of enabling the locking block 71 to clamp the guide rail, the elastic deformation part 73 is approximately Z-shaped and is positioned in a hollow part on the locking piece, a clamping column 74 is arranged in the middle of the elastic deformation part 73, and the clamping column 74 is clamped at the bottom of the base 5. The base 5 has a mounting lug 51 at the other end in the longitudinal direction, and the mounting lug is provided with a second screw hole 511 penetrating vertically. The arrangement of the locking block 5 and the first screw hole 72 thereof, and the mounting lug 5 and the second screw hole 511 thereof enables the utility model to be suitable for use places with guide rails, and can also be directly fixed and mounted by screws, thereby enabling the utility model to be also suitable for use places without guide rails. Therefore, the installation universality is better, and the installation requirements of the client with the guide rail and the client without the guide rail can be met simultaneously.

The utility model also comprises a shell 6 with an opening at the lower end, wherein the shell 6 is connected with the base 5 and contains the relays 2 in the shell cavities thereof. The utility model also comprises a locking block 7 used for fixing the base 5 on the guide rail, and the locking block 7 is arranged at the bottom of one end of the base 5. The end of the locking block 7 exposed out of the base 5 is provided with the first screw hole 71, so that the utility model is suitable for use places with guide rails and also suitable for use places which do not need guide rails and are directly fixed by screws.

In this embodiment, be equipped with on the PCB board 1 with a plurality of luminescent light sources of relay 2 one-to-one, shell 6 sets up with a plurality of leaded light post 8 of luminescent light source one-to-one, corresponding luminescent light source is faced respectively to each leaded light post 8 bottom.

According to the relay module for increasing the creepage distance, the creepage distance between each two adjacent groups of pins of the output wiring terminal is L1+ L2+ L3+ L4+ L5, as shown in FIG. 7, wherein L1 and L5 are the distance between the baffle 32 and the two adjacent groups of pins, L2 and L4 are the vertical distances between the bottom end of the baffle 32 and the bottom surface of the PCB 1, and L3 is the thickness of the baffle 32. If the baffle 32 is not disposed at the bottom end of the output terminal 3, the creepage distance between each two adjacent groups of pins is L, as shown in fig. 8, where L is the distance between two adjacent groups of pins. Compared with L, the sum of L1, L2, L3, L4 and L5 has the advantages that L2 and L4 are added, so that the creepage between adjacent groups of pins on the output side of the high-voltage power supply can be obviously increased, the requirement of the creepage distance for 300V industry can be met, the withstand voltage of a product is improved, and the reliability of the product is improved.

The above embodiments are only used to further illustrate the relay module for increasing creepage distance of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention fall within the protection scope of the technical solution of the present invention.

Claims

1. A relay module for increasing creepage distance comprises a PCB, and a plurality of relays and output connecting terminals which are arranged on the PCB, wherein the output connecting terminals are provided with a plurality of groups of pins which are distributed along a preset direction and correspond to the relays one by one, and each group comprises a plurality of pins; the method is characterized in that: and the bottom end of the output wiring terminal is provided with a blocking part between every two adjacent groups of pins respectively, and the blocking part separates the two groups of pins adjacent to the blocking part.

2. The relay module for increasing creepage distance according to claim 1, wherein: the baffle part comprises at least one vertical baffle, and the length direction of the baffle is vertical to the preset direction.

3. The relay module for increasing creepage distance according to claim 2, wherein: the bottom end of the baffle is flush with the bottom ends of the pins, or the bottom end of the baffle is lower than the bottom ends of the pins.

4. The relay module for increasing creepage distance according to claim 2, wherein: the pins of each group are distributed along the length direction of the baffle plate respectively.

5. The relay module for increasing creepage distance according to claim 1, wherein: the relays are distributed along the preset direction.

6. The relay module for increasing creepage distance according to any one of claims 1 to 5, wherein: each pin respectively downwards penetrates through a pin hole correspondingly arranged on the PCB, and the blocking part downwards penetrates through a through hole correspondingly arranged on the PCB.

7. The relay module for increasing creepage distance according to claim 1, wherein: the PCB is characterized by further comprising an input wiring terminal, wherein the input wiring terminal is arranged on the PCB, and the relays are located between the input wiring terminal and the output wiring terminal.

8. The relay module for increasing creepage distance according to claim 7, wherein: the input wiring terminal and the output wiring terminal are respectively spring wiring terminals.

9. The relay module for increasing creepage distance according to claim 1, wherein: the PCB is arranged on the base; the locking device is characterized by further comprising a locking block, wherein the locking block is arranged at the bottom of one end of the base in a sliding mode, one end of the locking block in the sliding direction is located below the base, and a clamping block used for clamping the guide rail is arranged.

10. The relay module for increasing creepage distance according to claim 9, wherein: the shell is connected with the base and contains the relays in a shell cavity of the shell; the PCB is provided with a plurality of light-emitting light sources which are in one-to-one correspondence with the relays, the shell is provided with a plurality of light guide columns which are in one-to-one correspondence with the light-emitting light sources, and the bottom ends of the light guide columns face the corresponding light-emitting light sources respectively.