CN202930319U - solid state relay - Google Patents

Abstract

The utility model provides a solid-state relay, which comprises a shell and a solid-state relay, wherein the shell is provided with an accommodating space; at least one heating element arranged in the accommodating space of the shell; the first heat radiating piece is arranged in the accommodating space of the shell and connected with the heating piece; the second heat dissipation piece is arranged on the outer side of the shell; wherein, a part of the first heat sink is exposed out of the shell and connected with the second heat sink, and the solid state relay is connected to a switchboard by the matching assembly of a positioning component and the second heat sink.

Description

solid state relay

technical field

The utility model relates to a solid-state relay, in particular to a solid-state relay which is installed on a track of a switchboard through a positioning element.

Background technique

Solid state relay (solid state relay, SSR) is an electronic switching device, which can control a large load current or voltage through a small current control signal, and can play automatic adjustment, safety protection, and conversion in the circuit circuit and other important functions. The difference between solid-state relays and general traditional circuit breakers (circuit breakers) or electromagnetic relays (Electro-Magnetic Relay, EMR) is that it uses a non-mechanical switching mechanism, and its switching principle is not achieved by the movement of physical moving parts The effect of circuit switching. Most of today's solid-state relays use an optical coupling mechanism to achieve the function of switching operations. They are internally equipped with light-emitting elements such as light-emitting diodes (LEDs) and light-receiving elements such as photoelectric crystals to form an optocoupler. . The current generated by the photoelectric crystal after receiving light can trigger a thyristor switch, such as a silicon controlled rectifier (Silicon Controlled Rectifier, SCR) or a bidirectional silicon controlled rectifier (Triode for Alternating Current, TRIAC), etc., so the solid state relay can Accepts small current control signal input to drive high voltage and high current output, has the effect of isolating input and output terminals and controlling high power output.

Referring now to Figure 1, a perspective view of an existing solid state relay is shown. As shown in the figure, the traditional solid state relay 500 is mostly designed as a flat cuboid, and a pair of terminals 501 facing each other are provided at both ends of the solid state relay, which are respectively used as the control terminal and output terminal of the solid state relay. The power wiring can be transparent The electrical connection is established by locking the terminals with screws and other fasteners. The bottom of the solid state relay 500 will be provided with a metal heat sink 503 for heat dissipation of the internal electronic components, and the specification of the solid state relay will be marked on the plane 505 of its housing, such as the control terminal and output terminal and its applicable current or voltage range, etc. In general practice, the solid state relay will be installed on the switchboard (not shown) through the fixing hole 507 formed at the bottom of the solid state relay, and its control terminal will usually be installed on the switchboard through the flexible wiring. An external manual switch (such as a mains main switch button installed inside the house) is electrically connected, and the output terminals are respectively connected to the load line (such as the mains power supply line) through the copper strip or soft wire on the power bus bar. Or the lines in various areas of the house) are electrically connected. As far as one of the usage examples is concerned, users who have installed solid-state relays in their homes can switch part or all of the mains power supply in the house by pressing the master switch button designed on the wall near the gate when they go out or enter the door. , there is no need to go to the distribution box to switch the circuit breaker in person in the traditional way.

In actual production, although the above-mentioned traditional solid-state relay can provide users with good usability and convenience, its flat cuboid appearance is not designed according to the installation specifications of general standardized switchboards (multiple designs are used to install circuit breakers). , so in the actual installation, the traditional solid state relay may need to add support structures such as iron plates or brackets on the switchboard to complete the installation stably, and it may not even be installed in some special switchboards or switchboards . Furthermore, the design that does not conform to the specifications of the general switchboard will easily cause the wiring in the switchboard to be messy and disorderly, which is due to the existing defects in the design of the traditional solid state relay. In addition, in the cooperation between the existing relay and the existing switchboard, due to the incompatibility of appearance and size, it is impossible to use a standard metal cover for shielding, so that the terminals are exposed outside, thereby causing the risk of electric shock.

In view of the aforementioned defects in the exterior design of the existing solid state relays, the present invention provides a novel solid state relay.

Utility model content

The purpose of the utility model is to provide a solid state relay, especially a solid state relay installed on a track of a switchboard through a positioning element.

The solid-state relay that achieves the above purpose includes: a housing with an accommodating space; at least one heating element disposed in the accommodating space of the housing; a first heat sink disposed in the accommodating space of the housing and connect the heating element; a second heat dissipation element is arranged on the outside of the casing; wherein, a part of the first heat dissipation element is exposed outside the casing and connected to the second heat dissipation element, and the solid state relay is positioned by a The component is assembled with the second heat sink to be connected to an upper board of a switchboard.

Preferably, the positioning component includes a fixing piece, a sliding piece and an elastic piece, the elastic piece connects the fixing piece and the sliding piece, the fixing piece is connected to the second heat sink, and the sliding piece is joined to the On a track where the switchboard is located.

Preferably, the sliding part is provided with an operating part, an opening, a first hook and a top, and the fixing part is provided with a second hook, and the opening of the sliding part is inserted through the second hook , and the two ends of the elastic member are respectively connected to the first hook portion and the second hook portion.

Preferably, the second heat sink is provided with a groove for engaging a track provided on the switchboard.

Preferably, a third heat sink is further included, connected to the part of the first heat sink exposed outside the casing, the third heat sink is made of metal material or high thermal conductivity material

Preferably, the metal material is aluminum.

Preferably, the first heat dissipation member and the second heat dissipation element are made of metal materials or materials with high thermal conductivity.

Preferably, it further includes a circuit board installed in the casing and electrically connected with the heating element.

Preferably, the housing has at least one pair of slots, each pair of slots is respectively formed at both ends of the housing to be configured as an output terminal and a control terminal of the solid state relay, and the output terminal and The control terminal is electrically connected to the circuit board inside the casing.

Preferably, the output end is electrically connected to a power supply line of the switchboard.

Preferably, the control terminal is electrically connected to a control switch.

Preferably, the housing is further provided with an indicator light electrically connected to the circuit board.

Preferably, the switchboard is an IEC60175 or EN50022 switchboard.

The solid state relay proposed by the utility model is designed to be similar to conventional no-fuse circuit breakers in appearance so as to be conveniently installed on standard switchboards. The solid state relay also has a special heat sink to strengthen the heat dissipation of its internal components, and can be installed on a track of a regulated switchboard through the cooperation of the heat sink and a positioning component.

Description of drawings

Figure 1 shows a perspective view of a conventional solid state relay.

FIG. 2 shows an exploded view of the track of the solid state relay of the present invention installed on a switchboard.

FIG. 3 shows a perspective view of the solid state relay of the present invention installed on a track of a switchboard.

FIG. 4 shows a side view of assembling the second heat sink and the positioning component to the track.

FIG. 5 shows an exploded view of the second heat sink, the positioning assembly, and the track.

Fig. 6 shows a side view of the sliding part of the positioning assembly moving to the left to disengage the second cooling part from the track.

FIG. 7 shows an exploded view of the second heat sink, the positioning component and the track.

Explanation of main component labels:

1 solid state relay

2 housing

21 Left side cover

22 middle body

221 openings

222 slot

223 output

224 control terminal

225 panels

23 Right side cover

231 openings

3 circuit boards

4 heating elements

5 first radiator

51 screw holes

6 second heat sink

61 screw holes

62 screws

63 screw holes

64 grooves

7 The third radiator

10 positioning components

11 fixing parts

111 screw holes

112 screw

113 second hook

12 sliders

121 Operation Department

122 holes

123 first hook

124 to the top

13 elastic pieces

20 tracks

21 right wall

22 left side wall

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation of the present utility model is now described with reference to the accompanying drawings:

First, please refer to FIG. 2 and FIG. 3 , which respectively show an exploded view and a three-dimensional view of the solid state relay of the present invention installed on a track of a switchboard. The solid state relay 1 of the present utility model comprises a housing 2, has a left side cover 21, a middle body 22 and a right side cover 23, and the left side cover 21, the middle body 22 and the right side cover 23 are assembled into the The casing 2 then forms an accommodating space inside, the lower side of the middle body 22 is provided with an opening 221, and the right side cover 23 is also provided with an opening 231; In the space; at least one heating element 4 is arranged in the accommodation space of the casing 2 and is electrically connected to the circuit board 3, the heating element 4 can be a transistor; a first heat dissipation element 5 is arranged in the casing 2 and connected to the heating element 4 to dissipate heat from the heating element 4. The first heat dissipation element 5 is partially exposed to the shell through the opening 221 of the middle body 22 and the opening 231 of the right side cover 23 respectively. The outer side of the body 2; and a second heat sink 6, which is arranged on the lower side of the housing 2, and the second heat sink 6 is connected to the bottom of the first heat sink 5 through the cooperation of the screw hole 61 and the screw 62 The screw hole 51.

Preferably, the solid state relay 1 of the present utility model further includes a third heat sink 7, which is connected to the right side of the first heat sink 5; more carefully, the third heat sink 7 It is connected to the exposed part of the first heat sink 5 outside the housing 2 to accelerate heat dissipation. It is worth mentioning that the first heat sink 5 , the second heat sink 6 and the third heat sink 7 are made of metal materials or materials with high thermal conductivity, preferably aluminum metal. The heat generated by the heating element 4 is first transferred to the first heat dissipation element 5 , and the heat on the first heat dissipation element 5 is then transferred to the second heat dissipation element 6 and the third heat dissipation element 7 for dissipating heat.

The middle body 22 of the housing 2 has at least one pair of notches 222, and each pair of notches 222 is respectively formed at opposite ends of the housing 2 to configure an output terminal 223 of the solid state relay 1 and an The control terminal 224 , the output terminal 223 and the control terminal 224 are electrically connected to the circuit board 3 inside the casing 2 . The output end 223 is electrically connected to a power supply line (not shown) of a switchboard, and the control end 224 is electrically connected to a control switch (not shown). Preferably, the switchboard is an IEC60175 or EN50022 switchboard.

Please refer to FIG. 4 , which shows a side view of the second heat sink and the positioning assembly assembled to the track; FIG. 5 shows an exploded view of the second heat sink, the positioning assembly, and the track, and refer to FIG. 3 together. In these two figures, the housing 2 is omitted so as to clearly see the connection relationship among the second heat sink 6 , the positioning assembly 10 and the track 20 . The solid state relay 1 is connected to the rail 20 of the switchboard through a positioning assembly 10 and the second heat sink 6 . The positioning component 10 includes a fixing part 11 , a sliding part 12 and an elastic part 13 . Wherein, the fixing member 11 is connected to the screw hole 63 of the second heat sink 6 through the screw hole 111 and the screw 112 , so that the fixing member 11 is located below the second heat sink 6 .

The sliding part 12 has an operating part 121 , an opening 122 , a first hook part 123 and a contact part 124 , and the fixing part 111 has a second hook part 113 . The opening 122 of the sliding member 12 is inserted through the second hook 113, so that the sliding member 12 is located on the fixing member 11, and the two ends of the elastic member 13 are respectively connected to the first hook 123 and the first hook 123. The second hook portion 113 , so that the sliding member 12 can slide relative to the fixing member 11 . The track 20 has a right side wall 21 and a left side wall 22 , and the second heat sink 6 has a groove 64 corresponding to the right side wall 21 of the track 20 . The right side wall 21 of the rail 20 engages with the groove 64 of the second heat sink 6 , and the abutting portion of the sliding member 12 abuts against the left side wall 22 of the rail 20 .

Please refer to FIG. 6 , which shows a side view of the sliding part of the positioning assembly moving to the left to disengage the second heat sink from the track; FIG. 7 shows an exploded view of the second heat sink, the positioning assembly and the track, and refer to FIG. 3 together. In these two figures, the housing 2 is omitted so as to clearly see the connection relationship among the second heat sink 6 , the positioning assembly 10 and the track 20 . When the user pulls out the operating portion 121 to move the sliding member 12 to the left (as shown by the arrow), the elastic member 13 is compressed, and the abutting portion 124 of the sliding member 12 also moves to the left. , at this time, the distance between the abutting portion 124 of the sliding member 12 and the groove 64 of the second heat sink 6 is widened, so that the track 20 can be connected with the second heat sink 6 and the positioning assembly 10 break away. Through the movement of the sliding part 12 of the positioning component 10 , the second heat sink 6 and the positioning component 10 can be easily combined or disengaged from the track 20 on the switchboard.

In the solid state relay 1 of the present invention, a panel 225 and an indicator light (not shown) are arranged on the top surface of the casing 2 . The panel 123 can be a transparent panel made of Mylar or aluminum, and various marks about the solid state relay 1 can be printed on the front and back sides, such as product logo and model, description of each terminal, applicable control current type and Range, applicable output current type and range, etc., to provide the information of the solid state relay 1, which is convenient for users to view. Wherein, the indicator light is electrically connected to the circuit board 3 inside, and the state of the solid state relay 1 can be indicated to the user through the color and flickering frequency of the indicator light.

The advantage of the solid state relay of the present invention is that the solid state relay can be installed on the track of the regulated switchboard through the cooperation of the heat sink and the positioning component. Wherein, the user operates the sliding part to move the sliding part outward (away from the track) or inward (closer to the track), so that the solid state relay can be disengaged or installed on the track of the switchboard.

The above descriptions are only illustrative specific implementations of the present utility model, and are not intended to limit the scope of the present utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention shall fall within the protection scope of the present invention.

Claims (14)

1. A solid state relay, characterized in that the solid state relay comprises: A housing with an accommodating space; At least one heating element is arranged in the accommodation space of the housing; A first heat sink, located in the accommodation space of the housing and connected to the heating element; a second heat sink, located on the outside of the housing; Wherein, a part of the first heat sink is exposed outside the housing and connected to the second heat sink, and the solid state relay is connected to a switchboard through a positioning assembly and the second heat sink. the 2. The solid state relay as claimed in claim 1, wherein the positioning assembly comprises a fixing part, a sliding part and an elastic part, the elastic part connects the fixing part and the sliding part, and the fixing part is connected to the The second cooling element, and the sliding element is engaged on a track provided by the switchboard. the 3. The solid state relay according to claim 2, wherein the sliding member is provided with an operating portion, an opening, a first hook and a top, and the fixing member is provided with a second hook, the The opening of the sliding part is inserted through the second hook part, and the two ends of the elastic part are respectively connected to the first hook part and the second hook part. the 4 . The solid state relay as claimed in claim 1 , wherein the second heat sink is provided with a groove, and the groove engages with a track provided on the switchboard. the 5. The solid-state relay as claimed in claim 1, further comprising a third heat sink, connected to the part of the first heat sink exposed outside the housing, the third heat sink is made of metal material or Made of high thermal conductivity material. the 6. The solid state relay as claimed in claim 5, wherein the metal material is aluminum. the 7 . The solid state relay as claimed in claim 1 , wherein the first heat sink and the second heat sink are made of metal material or high thermal conductivity material. the 8. The solid state relay as claimed in claim 7, wherein the metal material is aluminum. the 9. The solid state relay as claimed in claim 1, further comprising a circuit board installed in the housing and electrically connected to the heating element. the 10. The solid-state relay as claimed in claim 9, wherein the housing has at least one pair of notches, and each pair of notches is respectively formed at both ends of the housing to be configured as the solid-state relay. An output end and a control end, the output end and the control end are electrically connected to the circuit board inside the casing. the 11. The solid state relay as claimed in claim 10, wherein the output terminal is electrically connected to a power supply line of the switchboard. the 12. The solid state relay according to claim 10, wherein the control terminal is electrically connected to a control switch. the 13. The solid state relay as claimed in claim 9, wherein the housing is further provided with an indicator light electrically connected to the circuit board. the 14. The solid state relay according to claim 1, wherein the switchboard is a switchboard of IEC60175 or EN50022 type. the

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