CN222995305U

CN222995305U - A solid state relay

Info

Publication number: CN222995305U
Application number: CN202421534936.8U
Authority: CN
Inventors: 郭家仕
Original assignee: Xiamen Hongfa Electroacoustic Co Ltd
Current assignee: Xiamen Hongfa Electroacoustic Co Ltd
Priority date: 2024-07-01
Filing date: 2024-07-01
Publication date: 2025-06-17
Anticipated expiration: 2034-07-01

Abstract

The utility model discloses a solid-state relay which comprises a shell, a cover body and a PCB (printed circuit board), wherein an opening is formed in one end of the shell in a first direction, guide limit grooves are respectively formed in two opposite inner side surfaces of the shell, the PCB is installed in the shell from the opening, two opposite ends of the PCB are respectively inserted into the guide limit grooves on corresponding sides, and the cover body is connected to the opening of the shell and limits the PCB from exiting from the opening. The utility model utilizes the guide limit groove to limit the PCB, so that the PCB is not required to be fixed by pouring sealant, the assembly process is simpler, the automatic assembly can be realized, and the assembly efficiency is greatly improved.

Description

Solid-state relay

Technical Field

The utility model relates to the technical field of relays, in particular to a solid-state relay.

Background

A solid state relay is a contactless switch consisting of a microelectronic circuit, discrete electronic devices, power electronic power devices, etc. Thus, solid state relays typically include a PCB board that, upon assembly of the device, forms a PCBA assembly. At present, the PCBA component is directly arranged in a shell of the solid state relay and then is encapsulated and fixed by using pouring sealant. The solid state relay is not convenient to assemble and is difficult to realize automatic assembly because the potting process of the potting adhesive is troublesome.

Disclosure of utility model

Aiming at the technical problems in the prior art, the utility model provides a solid-state relay, which can realize automatic assembly by changing the fixing mode of a PCB (printed circuit board) without fixing the PCB by pouring sealant.

The solid-state relay comprises a shell, a cover body and a PCB board, wherein an opening is formed in one end of the shell in the first direction, guide limit grooves are formed in two opposite inner side surfaces of the shell, the PCB board is installed in the shell from the opening, two opposite ends of the PCB board are respectively inserted into the guide limit grooves on the corresponding sides, and the cover body is connected to the opening of the shell and limits the PCB board to withdraw from the opening.

Further, the guiding limit grooves extend along the first direction and are distributed along the second direction, the second direction is perpendicular to the first direction, and the PCB is parallel to the first direction and the second direction.

Further, the shell and/or the cover body is provided with a supporting and limiting structure for supporting and limiting the PCB.

Further, the first supporting and limiting structure is located on the inner wall surface of the other end of the shell in the first direction and comprises a plurality of first supporting ribs distributed along the second direction, each first supporting rib extends along a third direction, each first supporting rib is provided with a first segmentation opening correspondingly clamped with one end of the PCB in the first direction, and the third direction is perpendicular to the first direction and the second direction.

Further, the second supporting and limiting structure comprises a plurality of second supporting ribs which are distributed along the second direction, each second supporting rib extends along a third direction, each second supporting rib is provided with a second section opening which is correspondingly clamped with the other end of the PCB in the first direction, and the third direction is perpendicular to the first direction and the second direction.

The PCB comprises a shell, a PIN PIN, a radiator, a controllable silicon chip, a radiator and the controllable silicon chip, wherein the radiator and the controllable silicon chip are fixed together, the PIN PIN of the controllable silicon chip is inserted into the PCB and welded on the PCB, the radiator and the controllable silicon chip are positioned in the shell, and the radiator is fixedly connected with the shell.

Furthermore, the radiator is provided with a positioning column which is inserted into a positioning hole correspondingly arranged on the PCB and is welded and fixed with the PCB, and the radiator is locked on the shell by adopting a screw.

Further, the PCB board is connected with an LED lamp, and the shell or the cover body is provided with a positioning structure for providing positioning for the LED lamp, or the shell is matched with the cover body to provide a positioning structure for providing positioning for the LED lamp.

Further, the positioning structure comprises a first positioning notch arranged on the shell and a second positioning notch arranged on the cover body, and the first positioning notch and the second positioning notch are arranged oppositely and surround to form a positioning hole sleeved outside the LED lamp.

Further, the shell is in buckling connection with the cover body.

Further, a plurality of connecting pieces extending towards the shell are arranged on the peripheral edge of the cover body, clamping holes are formed in each connecting piece respectively, wedge-shaped clamping blocks are arranged in the clamping holes of the inner side face of the shell corresponding to the connecting pieces respectively, each connecting piece of the cover body extends into the shell respectively, and the clamping holes on the connecting pieces are buckled with the corresponding wedge-shaped clamping blocks one by one.

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

1. Because the two opposite inner side surfaces of the shell are respectively provided with the guide limit grooves which are arranged oppositely, the PCB is arranged in the shell, the two opposite ends of the PCB are respectively inserted into the guide limit grooves on the corresponding sides, and the cover body is used for limiting the PCB to withdraw from the opening of the shell, the PCB can be limited by the guide limit grooves, and the PCB is not required to be fixed by pouring sealant, so that the assembly process is simpler, the automatic assembly can be realized, and the assembly efficiency is greatly improved.

2. The shell and/or the cover body is provided with a supporting and limiting structure, and can further support and limit the PCB, so that the PCBA assembly is more stable, and the influence caused by bad working conditions such as vibration is reduced.

3. The utility model ensures that the radiator which is relatively fixed with the PCB is fixedly connected with the shell, thereby further improving the stability of the PCBA component and reducing the influence caused by bad working conditions such as vibration and the like.

The present utility model will be described in further detail with reference to the drawings and examples, but the solid state relay of the present utility model is not limited to the examples.

Drawings

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

FIG. 2 is a schematic perspective view of the housing of the present utility model;

FIG. 3 is a schematic perspective view of the cover of the present utility model;

FIG. 4 is an assembled schematic view of a PCBA assembly of the present utility model;

FIG. 5 is a schematic perspective view of a PCBA assembly of the present utility model;

FIG. 6 is a schematic view of an assembly of a housing and a PCBA assembly of the present utility model;

FIG. 7 is a schematic perspective view of the PCBA assembly of the present utility model after being installed into a housing;

FIG. 8 is a schematic view of the assembly of the cover and the housing of the present utility model;

FIG. 9 is a schematic perspective view of the present utility model;

FIG. 10 is a front view of the present utility model;

FIG. 11 is a section view H-H of FIG. 10;

in the figure, 1, the casing, 11, the direction spacing groove, 12, first support rib, 121, first segmentation mouth, 13, first location breach, 14, wedge fixture block, 2, the lid, 21, the second supports rib, 211, the second segmentation mouth, 22, the second location breach, 23, the connection piece, 231, the card hole, 3, the PCB board, 31, the locating hole, 32, the PIN hole, 4, the radiator, 41, the reference column, 5, the silicon controlled rectifier chip, 51, the PIN needle, 6/7, the screw, 8, the LED lamp.

Detailed Description

In the present utility model, the terms "first," "second," "third," and the like are used merely to distinguish between similar objects and not to describe a particular sequence or order, nor are they to be construed as indicating or implying relative importance. In the description, directions or positional relationships indicated by "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc. are used for convenience of description of the present utility model based on the directions or positional relationships shown in the drawings, and are not intended to indicate or imply that the apparatus must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the scope of protection of the present utility model. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, in the description of the present utility model, unless otherwise indicated, "a plurality" means two or more. "and/or" describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate that there are three cases of a alone, a and B together, and B alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. In the description of the present utility model, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and the like are to be construed broadly, and for example, "connected," may be either fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or may be in communication with each other between two elements, as would be understood by one of ordinary skill in the art, and the terms are specifically defined in the present utility model.

Referring to fig. 1-11, the solid-state relay of the present utility model includes a housing 1, a cover 2 and a PCB 3, wherein an opening is provided at one end of the housing 1 in a first direction, two opposite inner side surfaces of the housing 1 are respectively provided with opposite guide limiting grooves 11, the guide limiting grooves 11 extend along a first direction and are arranged along a second direction, and the second direction is perpendicular to the first direction. The PCB 3 is installed in the shell 1 from the opening of the shell 1, two opposite ends of the PCB 3 are respectively inserted into the guide limit grooves 11 on the corresponding sides one by one, and the PCB 3 is parallel to the first direction and the second direction. The cover 2 is connected to the opening of the housing 1 and restricts the PCB 3 from exiting from the opening of the housing 1.

Further, the housing 1 and/or the cover 2 are provided with supporting and limiting structures for supporting and limiting the PCB 3. In the present embodiment, the housing 1 and the cover 2 are provided with supporting and limiting structures, respectively, but are not limited thereto.

As shown in fig. 2, the supporting and limiting structure on the housing 1 is located on an inner wall surface where the other end of the housing 1 in the first direction is located, and includes a plurality of first supporting ribs 12 arranged along the second direction, each first supporting rib 12 extends along the third direction, and each first supporting rib 12 is provided with a first segment opening 121 correspondingly engaged with one end of the PCB 3 in the first direction. The third direction is perpendicular to the first direction and the second direction. Specifically, in the present embodiment, the first direction is the front-rear direction, the second direction is the left-right direction, and the third direction is the up-down direction.

As shown in fig. 3, the supporting and limiting structure on the cover body 2 includes a plurality of second supporting ribs 21 arranged along the second direction, each second supporting rib 21 extends along the third direction, and each second supporting rib 21 is provided with a second segment opening 211 correspondingly engaged with the other end of the PCB 3 in the first direction.

The utility model also comprises a radiator 4 and a silicon controlled chip 5, wherein the silicon controlled chip 5 and the radiator 4 are fixed together, and a PIN needle 51 of the silicon controlled chip 5 is inserted and welded on the PCB 3. The radiator 4 is provided with a plurality of positioning columns 41, and each positioning column 41 is inserted into a positioning hole 31 correspondingly arranged on the PCB 3 and is welded and fixed with the PCB 3. Specifically, the thyristor chip 5 is locked on the radiator 4 by the screw 6, when in assembly, the PIN 51 of the thyristor chip 5 is inserted into the PIN hole 32 correspondingly arranged on the PCB 3, the positioning column 41 of the radiator 4 is inserted into the positioning hole 31 of the PCB 3, and then the whole is subjected to wave soldering to form the PCBA component, as shown in fig. 4 and 5. The entire PCBA assembly is then installed into the housing 1 from the opening of the housing 1 and the heat sink 4 is fixedly connected to the housing 1, and in particular, in this embodiment, the heat sink 4 is locked to the housing 1 by the screws 7, but the manner of fixing the two is not limited thereto.

In this embodiment, the PCB board 3 is connected with the LED lamp 8, the housing 1 or the cover 2 is provided with a positioning structure for positioning the LED lamp 8, or the housing 1 and the cover 2 are matched with a positioning structure for positioning the LED lamp 8, and the LED lamp 8 is at least partially exposed out of the housing 1. Specifically, as shown in fig. 2 and 3, the positioning structure includes a first positioning notch 13 provided in the housing 1 and a second positioning notch 22 provided in the cover 2, where the first positioning notch 13 and the second positioning notch 22 are disposed opposite to each other and surround a positioning hole provided outside the LED lamp 8.

In this embodiment, the housing 1 is snap-connected to the cover 2. Specifically, the peripheral edge of the cover 2 is provided with a plurality of connecting pieces 23 extending toward the housing 1, each connecting piece 23 is provided with a clamping hole 231, the clamping holes 231 corresponding to each connecting piece 23 in the inner side of the housing 1 are respectively provided with wedge-shaped clamping blocks 14, each connecting piece 23 of the cover 2 extends into the housing 1, and the clamping holes 231 on the connecting pieces are respectively buckled with the corresponding wedge-shaped clamping blocks 14 one by one, but the clamping connection mode of the housing 1 and the cover 2 is not limited to this.

In the solid-state relay of the utility model, when in assembly, the PCB 3, the radiator 4 and the silicon controlled rectifier chip 5 are assembled together in the mode to form a PCBA assembly, the PCBA assembly is then arranged in the shell 1, two opposite ends of the PCB 3 in the second direction are respectively inserted into the two guide limit grooves 11 of the shell 1, one end of the PCB 3 in the first direction is respectively clamped into the first section openings 121 of the first support ribs 12, the LED lamps 8 on the PCB 3 are clamped into the first positioning notches 13 of the shell 1, and then the radiator 4 is locked in the shell 1 by the screws 7, as shown in fig. 6 and 7. Then, the cover 2 is snap-coupled to the housing 1 in the above manner, as shown in fig. 8 and 9. After the assembly is completed, the other ends of the PCB 3 in the first direction are respectively clamped into the second section openings 211 of the second support ribs 21 on the cover 2, and the second positioning notch 22 on the cover 2 and the first positioning notch 13 of the housing 1 are surrounded to form a circular positioning hole to position the LED lamp 8 (the LED lamp 8 is not shown in fig. 9) as shown in fig. 9-11.

According to the solid-state relay, the PCB 3 is limited by the two guide limiting grooves 11, so that the PCB 3 is not required to be fixed by pouring sealant, the assembly process of the PCB 3 is simple, automatic assembly can be realized, and the assembly efficiency is greatly improved. In addition, the utility model further utilizes the supporting and limiting structure on the shell 1 and/or the cover body 2 to support and limit the PCB 3, and the radiator 4 is fixedly connected with the shell 1, so that the stable fixing of the PCBA assembly can be realized, and the influence caused by bad working conditions such as vibration and the like is reduced.

The solid state relay of the present utility model is not related in part to the same or can be implemented using existing technology.

The above embodiment is only used for further illustrating a solid state relay of the present utility model, but the present utility model is not limited to the embodiment, and any simple modification, equivalent variation and modification made to the above embodiment according to the technical substance of the present utility model falls within the protection scope of the technical solution of the present utility model.

Claims

1. A solid-state relay, comprising a housing, a cover and a PCB board, wherein one end of the housing in a first direction is provided with an opening; characterized in that: two opposite inner side surfaces of the housing are respectively provided with guide limit grooves arranged oppositely, the PCB board is loaded into the housing through the opening, and the opposite ends of the PCB board are respectively inserted into the guide limit grooves on the corresponding sides; the cover body is connected to the opening of the housing and limits the PCB board from exiting from the opening.

2. The solid-state relay according to claim 1 is characterized in that: the guide limit groove extends along the first direction and is arranged along the second direction, the second direction is perpendicular to the first direction, and the PCB board is parallel to the first direction and the second direction.

3. The solid-state relay according to claim 2, characterized in that: the housing and/or the cover is provided with a support and limiting structure to support and limit the PCB board.

4. The solid-state relay according to claim 3 is characterized in that: the support and limiting structure on the shell is located on the inner wall surface where the other end of the shell in the first direction is located, and includes a plurality of first support ribs arranged along the second direction, each first support rib extends along a third direction respectively, and each first support rib is respectively provided with a first segmented opening corresponding to one end of the PCB board in the first direction; the third direction is perpendicular to the first direction and the second direction.

5. The solid-state relay according to claim 3 is characterized in that: the support and limiting structure on the cover body includes a plurality of second support ribs arranged along the second direction, each second support rib extends along a third direction respectively, and each second support rib is respectively provided with a second segmented opening corresponding to the other end of the PCB board in the first direction; the third direction is perpendicular to the first direction and the second direction.

6. The solid-state relay according to claim 1 is characterized in that it also includes a heat sink and a thyristor chip, the thyristor chip and the heat sink are fixed together, and the PIN pins of the thyristor chip are inserted and welded to the PCB board; the heat sink and the thyristor chip are located in the housing, and the heat sink is fixedly connected to the housing.

7. The solid-state relay according to claim 6, characterized in that: the heat sink is provided with a positioning column, the positioning column is inserted into the corresponding positioning hole of the PCB board, and is welded and fixed to the PCB board; the heat sink is screwed to the housing.

8. The solid-state relay according to claim 1, characterized in that: an LED lamp is connected to the PCB board, and the housing or the cover is provided with a positioning structure for providing positioning for the LED lamp, or the housing and the cover are matched with a positioning structure for providing positioning for the LED lamp.

9. The solid-state relay according to claim 8, characterized in that: the positioning structure comprises a first positioning notch provided on the housing and a second positioning notch provided on the cover, the first positioning notch and the second positioning notch are arranged opposite to each other and enclose a positioning hole outside the LED lamp.

10. The solid-state relay according to claim 1 is characterized in that: the shell is snap-connected to the cover body, and the edges of the cover body are provided with a plurality of connecting pieces extending toward the shell, each connecting piece is provided with a clamping hole, and the inner side surface of the shell is provided with a wedge-shaped clamping block corresponding to the clamping hole of each connecting piece, each connecting piece of the cover body extends into the shell, and the clamping holes thereon are snap-fitted with the corresponding wedge-shaped clamping blocks one by one.