CN217336198U

CN217336198U - Small-size solid-state relay

Info

Publication number: CN217336198U
Application number: CN202123322031.3U
Authority: CN
Inventors: 陈海滨; 江帆; 郭蟾芳
Original assignee: Delphi Electrical Centers Shanghai Co Ltd
Current assignee: Delphi Electrical Centers Shanghai Co Ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-08-30
Anticipated expiration: 2031-12-27

Abstract

The utility model relates to a little volume solid state relay, including shell (1), lay PCB board (2) of fixed relay circuit and metal terminal (5) be connected with PCB board (2), still including arranging PCB mounting (3) in shell (1) and arranging shell (1) bottom inboard packaging part (4) in, shell (1) is arranged in through PCB mounting (3) in PCB board (2), stretch out from the bottom of shell (1) after metal terminal (5) pass PCB mounting (3), packaging part (4) in proper order, PCB board (2) with the vertical parallel arrangement of metal terminal (5). Compared with the prior art, the utility model has the advantages of reduce volume, improve overall stability.

Description

Small-size solid-state relay

Technical Field

The utility model relates to an electronic components especially relates to a little volume solid state relay.

Background

In contrast to electromagnetic relays, a Solid State Relay (SSR) is a Relay that has no mechanical movement and no moving parts, but it has essentially the same function as an electromagnetic Relay. The SSR is a contactless switch element composed of solid electronic elements, which uses the electric, magnetic and optical characteristics of electronic elements to complete the isolation of input and output, and uses the switching characteristics of high-power triode, power field effect transistor, unidirectional silicon controlled rectifier or bidirectional silicon controlled rectifier to switch on and off the controlled circuit in a contactless and sparkless way. Under the condition of the same volume, the working capacity of the solid-state relay is far better than that of an electromagnetic relay, so that the solid-state relay is widely applied to various automatic devices and plays the roles of automatic adjustment, safety protection, circuit switching and the like in a circuit.

Along with to fixed relay if the heat dissipation, high-power, the continuous improvement of quality requirements such as current-carrying ability, solid state relay's that most commonly used at present volume is great and weight is big along with it also, it is very inconvenient to use, for satisfying its functional circuit's demand like patent CN213402962U, two PCB boards are horizontal and be upper and lower relation setting on structural design in the shell, the relay pin is connected on the lower surface of PCB board, and relay pin and PCB surface vertical, this kind of design leads to whole solid state relay's bulky, can't satisfy the user demand in less size space. In addition, this structure is not the design of PCB full parcel formula, and after the relay pin was connected to the PCB board promptly, did not possess the encapsulation protection architecture of inside PCB board, caused the influence to solid state relay's temperature, connection stability etc. easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a small volume solid state relay that small and simple structure, easily realization just for overcoming the defect that above-mentioned prior art exists.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a small-size solid state relay, includes the shell, lays the PCB board of fixed relay circuit and the metal terminal of being connected with the PCB board, still including arranging the PCB mounting in the shell in and arranging the inboard packaging part in shell bottom in, the PCB board passes through the PCB mounting and arranges in the shell in, the metal terminal stretches out from the bottom of shell after passing PCB mounting, packaging part in proper order, the PCB board with the vertical parallel arrangement of metal terminal.

Preferably, the housing is a semi-closed structure with an opening at the bottom, the PCB board and the PCB fixing member are embedded in the housing of the semi-closed structure, and the package member is embedded in the bottom of the housing.

Preferably, the PCB fixing member and the outer wall of the package member are both provided with a plug-in part for being embedded in the housing.

Preferably, the inner wall of the shell is provided with a connecting structure matched with the inserting part.

Preferably, be equipped with the recess that holds PCB board one end on the PCB mounting, the shape, the cross-sectional shape, the size phase-match of the size of recess and the tip of PCB board, be equipped with the first perforation that is used for the metal terminal to wear out on the recess.

Preferably, a second through hole corresponding to the first through hole in position is formed in the package, and the shape and size of the second through hole are the same as those of the first through hole.

Preferably, the housing is internally provided with a plug-in groove which is vertically plugged with the other end and two sides of the PCB.

Preferably, the surface of the PCB fixing member corresponding to the PCB board is provided with a fixing post for inserting the PCB fixing member into the housing.

Preferably, the inner wall of the shell is provided with a mounting structure matched with the fixing column.

Preferably, the set number and position of the first through hole and the second through hole are matched with the number and position of the metal terminals.

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

1) compared with the prior art, the utility model discloses small solid state relay's PCB board is vertical setting in the shell, and all is vertical setting with relay pin and PCB board, and structural layout is more reasonable, can reduce required accommodation space, and then effectively reduces whole solid state relay's volume, reduction in production cost.

2) The utility model discloses solid state relay's shell is equipped with PCB board mounting and packaging part, and the two all sets up the perforation, when can directly wearing out the metal terminal of being connected with the PCB board, can also realize the firm good encapsulation of connecting and shell of PCB board, and then improves solid state relay's overall stability.

Drawings

Fig. 1 is an external structural schematic diagram of a small-volume solid-state relay according to the embodiment of the present invention;

fig. 2 is a schematic diagram of an internal structure of a small-sized solid-state relay according to the embodiment of the present invention;

fig. 3 is an exploded view of a small-volume solid-state relay with the housing removed in an embodiment;

the reference numbers in the figures indicate:

1. the PCB comprises a shell, 2, a PCB board, 3, a PCB fixing piece, 301, a groove, 302, a fixing column, 4, a packaging piece, 401, a second through hole, 5 and a metal terminal.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

Examples

The utility model relates to a little volume solid state relay, figure 1 shows this little volume solid state relay's outside structure chart, and figure 2 shows this little volume solid state relay's content structure chart, as shown in figure 1, figure 2, little volume solid state relay includes shell 1, PCB board 2, PCB mounting 3, packaging part 4 and metal terminal 5 (being the relay pin).

The PCB 2 and the PCB fixing piece 3 are embedded in the shell 1, and the packaging piece 4 is tightly embedded in the bottom of the shell 1. The PCB board 2 is placed in the housing 1 by means of the PCB fixture 3. The PCB board 2 is connected to the metal terminals 5, and the metal terminals 5 are exposed from the housing 1 after passing through the PCB fixing member 3 and the package member 4. And a solid-state relay circuit is arranged on the PCB 2.

Further, the housing 1 is a semi-closed case, and the bottom thereof is open. The PCB board 2 is vertically embedded in the shell 1. Correspondingly, the housing 1 is internally provided with inserting grooves which are vertically inserted with the top and two sides of the PCB 2, and the shapes and the sizes of the inserting grooves are matched with the shapes and the sizes of the sections of the top and the two sides of the PCB 2.

Referring to fig. 3, in the small-sized solid-state relay of the present invention, the surface of the PCB 2 is connected to the metal terminal 5. Set up the pad that is used for with 5 looks adaptations of metal terminal on PCB board 2's surface promptly, and metal terminal 5 welds behind PCB board 2, and PCB board 2 is vertical setting with metal terminal 5, and the two is parallel promptly. Compared with a transverse arrangement mode and a vertical arrangement mode of the PCB and the metal terminals, the required space can be effectively reduced, and further the required volume of the shell 1 can be obviously reduced.

The PCB fixing member 3 is provided with a groove 301 for accommodating one end of the PCB 2, and the shape and size of the groove 301 are matched with the cross-sectional shape and size of the bottom end of the PCB 2. The bottom of the groove 301 is provided with a first through hole for the metal terminal 5 to pass through.

Further, a fixing post 302 is provided at the top center of the PCB holder 3 for inserting the PCB holder 3 into the housing 1. Correspondingly, the inner wall of the housing 1 is provided with a mounting structure matched with the fixing column 302, such as a groove, a sliding chute and the like.

The package 4 is disposed at the bottom of the PCB fixing member 3, and the package 4 is provided with a second through hole 401 corresponding to the first through hole in position, and the shape and size of the second through hole 401 are the same as those of the first through hole. The two through holes are designed to be used for the metal terminals 5 connected with the PCB 2 to pass through, and the set number, position, shape and size of the two through holes are matched with the number, position, shape and size of the metal terminals 5 actually connected.

Furthermore, both sides of the PCB fixing member 3 and the packaging member 4 are provided with an inserting part for being embedded into the housing 1 to realize connection, the inserting part can be a convex part, and correspondingly, a matched inserting groove is arranged in the housing 1; the insertion part may also be a groove structure, and correspondingly, the inner wall of the housing 1 is provided with a matched protrusion structure, so that the PCB fixing part 3 and the package part 4 are stably arranged in the housing 1. Correspondingly, the peripheral structures, shapes and sizes of the PCB fixing part 3 and the packaging part 4 are matched with the inner wall structures, shapes and sizes of the shell 1. By mounting the package 4 at the bottom of the housing 1, an effective sealing of the housing 1 is achieved, which improves stability. And the arrangement of the metal terminals 5 is not affected at all by the arrangement of the through holes.

Further, it should be noted that the present embodiment does not limit the specific structure of the solid state relay circuit, and the solid state relay circuit in chinese patent CN107623511B, or the solid state relay circuit in CN213402962U, or other solid state relay circuits in the prior art may be used to implement the basic function.

Compared with the prior art, the utility model discloses small solid state relay's PCB board is vertical setting in the shell, and all is vertical setting with relay pin and PCB board, can reduce required accommodation space, and then has reduced whole solid state relay's volume size to manufacturing cost has been reduced simultaneously. In addition, through setting up PCB board mounting and packaging part, the two all sets up the perforation, can directly wear out the metal terminal of being connected with the PCB board, can realize the PCB board and stabilize the good encapsulation of connecting and shell, improves solid state relay's overall stability.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a solid-state relay of little volume, includes shell (1), lays PCB board (2) of fixed relay circuit and metal terminal (5) be connected with PCB board (2), its characterized in that, still including arranging PCB mounting (3) in shell (1) and arranging shell (1) bottom inboard packaging part (4) in, shell (1) is arranged in through PCB mounting (3) in PCB board (2), stretch out from the bottom of shell (1) after metal terminal (5) pass PCB mounting (3), packaging part (4) in proper order, PCB board (2) with the vertical parallel arrangement of metal terminal (5).

2. The small-volume solid-state relay according to claim 1, wherein the housing (1) is a semi-closed structure with an open bottom, the PCB board (2) and the PCB holder (3) are embedded in the housing (1) of the semi-closed structure, and the package (4) is embedded in the bottom of the housing (1).

3. The small-volume solid-state relay according to claim 2, wherein the outer walls of the PCB holder (3) and the package (4) are provided with insertion parts for being embedded in the housing (1).

4. A small volume solid state relay according to claim 3, wherein the inner wall of the housing (1) is provided with a connection structure matching with the insertion part.

5. The small-volume solid-state relay according to claim 1, wherein the PCB holder (3) is provided with a groove (301) for accommodating one end of the PCB (2), the shape and size of the groove (301) are matched with the cross-sectional shape and size of the end of the PCB (2), and the groove (301) is provided with a first through hole for the metal terminal (5) to penetrate through.

6. The small-volume solid-state relay according to claim 5, wherein the package (4) is provided with a second through hole (401) corresponding to the first through hole in position, and the shape and size of the second through hole (401) are the same as those of the first through hole.

7. The small-volume solid-state relay according to claim 5, wherein the housing (1) is provided with a slot for vertically inserting the other end and two sides of the PCB (2).

8. The small-volume solid-state relay according to claim 5, wherein the surface of the PCB holder (3) corresponding to the PCB (2) is provided with fixing posts (302) for inserting the PCB holder (3) into the housing (1).

9. The small-volume solid-state relay according to claim 8, wherein the inner wall of the housing (1) is provided with a mounting structure matched with the fixing post (302).

10. The small-volume solid-state relay according to claim 6, wherein the set number and positions of the first through hole and the second through hole (401) are matched with the number and positions of the metal terminals (5).