CN212062443U

CN212062443U - Bidirectional overvoltage protection diode

Info

Publication number: CN212062443U
Application number: CN202020902465.7U
Authority: CN
Inventors: 李亭
Original assignee: Shenzhen Hankun Industry Co ltd
Current assignee: Shenzhen Hankun Industry Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2020-12-01
Anticipated expiration: 2030-05-26

Abstract

The utility model relates to a two-way diode technical field just discloses a two-way overvoltage protection diode, which comprises a housin, the board is placed to the interior diapire fixedly connected with of casing, it is equipped with the diode chip to place the board top, the equal movable mounting in the left and right sides at casing top has the button, two the equal swing joint in bottom portion of button has the clamp plate, two the equal fixedly connected with dead lever in bottom of clamp plate. This two-way overvoltage protection diode, through setting up heat-conducting plate and fin, press two buttons, promote two clamp plates and remove downwards, make two expanding spring contractions, make dead lever downwardly extending, the installation piece that makes the fin bottom is pegged graft fixedly with the cover shell of placing on the board, the bottom that makes the heat-conducting plate contacts with the top of diode chip, realize the heat transfer, a plurality of louvres of seting up on the fin, the heat dissipation that makes the diode is rapider, the radiating effect is obvious, thereby the heat dissipation of the diode chip of being convenient for.

Description

Bidirectional overvoltage protection diode

Technical Field

The utility model relates to a two-way diode technical field specifically is a two-way overvoltage protection diode.

Background

The bidirectional overvoltage protection diode is an overvoltage protection device with bidirectional voltage stabilization characteristic and bidirectional negative resistance characteristic, and is similar to a piezoresistor. It is used in various AC and DC power supply circuits to suppress instantaneous overvoltage. When surge pulse voltage appears in the protected circuit instantly, the two-way breakdown diode can break down Zener rapidly, and change from a high resistance state to a low resistance state to shunt and clamp the surge voltage, so that each element in the protection circuit is not damaged by the instant surge pulse voltage.

However, most of the existing diodes are hermetically packaged, and heat generated by the diodes after long-time use cannot be well discharged, so that the diodes are easily damaged, and the service life of the diodes is affected.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to prior art not enough, the utility model provides a two-way overvoltage protection diode possesses the radiating effect and good and installation advantage such as fixed, has solved that current diode is airtight encapsulation mostly, and the discharge that the heat that long-time use produced can not be fine causes the damage of diode easily, influences diode life's problem.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a bidirectional overvoltage protection diode comprises a shell, wherein a placing plate is fixedly connected to the inner bottom wall of the shell, a diode chip is arranged at the top of the placing plate, buttons are movably mounted on the left side and the right side of the top of the shell, pressing plates are movably connected to the bottom parts of the two buttons, fixing rods are fixedly connected to the bottoms of the two pressing plates, a radiating fin is fixedly connected to one end, away from the two pressing plates, of each fixing rod, a heat conducting plate is fixedly connected to the bottom of each radiating fin, the top parts of the diode chips are movably connected with the bottom parts of the heat conducting plate, U-shaped plates are movably connected to the left side and the right side of the back of the shell, openings of the two U-shaped plates face backwards, inserting blocks are movably connected to the insides of the two U-shaped plates, the bottom ends of the two inserting blocks are movably sleeved with the fixing, the surfaces of the two fixing blocks are respectively movably connected with the inside of the shell, and the bottoms of the front surfaces of the two fixing blocks are respectively propped against the left side and the right side of the top of the radiating fin.

Preferably, place the equal fixedly connected with cover shell in the left and right sides at board top, the equal fixedly connected with installation piece in the left and right sides of the bottom of fin, two the bottom of installation piece is pegged graft with the inside activity of two cover shells respectively.

Preferably, the inner wall of the left side and the inner wall of the right side of the shell are fixedly connected with connecting plates, two vertical sliding grooves are formed in the tops of the connecting plates, T-shaped sliding blocks are fixedly connected to the left side and the right side of the radiating fins, and the T-shaped sliding blocks are respectively connected with the inner portions of the two vertical sliding grooves in a sliding mode.

Preferably, the bottoms of the two pressure plates are fixedly connected with expansion springs, one side, opposite to the connecting plate, of the two pressure plates is fixedly connected with annular plates, and the bottom ends of the two expansion springs are fixedly connected with the tops of the two annular plates respectively.

Preferably, the two fixing rods are respectively positioned inside the two telescopic springs, and the surfaces of the two fixing rods are respectively movably connected with the insides of the two annular plates.

Preferably, two equal fixedly connected with traveller in the left and right sides of inserted block, two the one end that the traveller carried on the back mutually respectively with the inner wall sliding connection of U-shaped plate left and right sides, the equal fixedly connected with stopper in bottom of U-shaped plate left and right sides inner wall, two the bottom of traveller respectively with the top swing joint of two stoppers.

Compared with the prior art, the utility model provides a two-way overvoltage protection diode possesses following beneficial effect:

1. this two-way overvoltage protection diode, through setting up heat-conducting plate and fin, press two buttons, promote two clamp plates and remove downwards, make two expanding spring contractions, make dead lever downwardly extending, the installation piece that makes the fin bottom is pegged graft fixedly with the cover shell of placing on the board, the bottom that makes the heat-conducting plate contacts with the top of diode chip, realize the heat transfer, a plurality of louvres of seting up on the fin, the heat dissipation that makes the diode is rapider, the radiating effect is obvious, thereby the heat dissipation of the diode chip of being convenient for.

2. This two-way overvoltage protection diode, through setting up the U-shaped board, inserted block and fixed block, when the heat-conducting plate remove to with the diode chip contact, promote the fixed block to the inside removal of casing, make the bottom of fixed block and the top swing joint of fin, slide downwards in the inside of U-shaped board through the inserted block, make the inside of inserted block and casing outside fixed block peg graft, make the rigidity of fixed block to fix the position of fin, and then the installation of the diode of being convenient for is fixed.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of the structure of the present invention;

FIG. 3 is a schematic view of the U-shaped plate structure of the present invention;

fig. 4 is a schematic view of the top structure of the heat sink of the present invention.

Wherein: 1. a housing; 2. placing the plate; 3. a diode chip; 4. a button; 5. pressing a plate; 6. fixing the rod; 7. a heat sink; 8. a heat conducting plate; 9. a U-shaped plate; 10. inserting a block; 11. a fixed block; 12. a housing; 13. mounting blocks; 14. a connecting plate; 15. a vertical chute; 16. a T-shaped slider; 17. a tension spring; 18. an annular plate; 19. a traveler; 20. and a limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a bidirectional overvoltage protection diode comprises a housing 1, a placing plate 2 is fixedly connected to the inner bottom wall of the housing 1, a diode chip 3 is disposed on the top of the placing plate 2, a placing groove is disposed on the top of the placing plate 2, the diode chip 3 is movably connected with the inside of the placing groove, pins are fixedly connected to the left and right sides of the diode chip 3, grooves are disposed on the left and right sides of the housing 1, the two pins respectively penetrate into the grooves and extend to the outside of the housing 1, the surfaces of the two pins are movably connected with the inside of the two grooves, buttons 4 are movably mounted on the left and right sides of the top of the housing 1, circular grooves are disposed on the left and right sides of the top of the housing 1, the two buttons 4 are movably connected with the inside of the two circular grooves, pressing plates 5 are movably connected to the bottom of the two buttons 4, fixing rods 6, one end of each fixing rod 6, which is far away from the two pressing plates 5, is fixedly connected with a radiating fin 7, the inner walls of the left side and the right side of the shell 1 are fixedly connected with connecting plates 14, the top parts of the two connecting plates 14 are respectively provided with a vertical sliding groove 15, the number of the vertical sliding grooves 15 is four, each two vertical sliding grooves 15 are respectively positioned at the front side and the rear side of the top parts of the two connecting plates 14, the left side and the right side of each radiating fin 7 are respectively and fixedly connected with a T-shaped sliding block 16, the two T-shaped sliding blocks 16 are respectively and slidably connected with the inner parts of the two vertical sliding grooves 15, the four T-shaped sliding blocks 16 are respectively and slidably connected with the inner parts of the four vertical sliding grooves 15, the bottoms of the two pressing plates 5 are respectively and fixedly connected with a telescopic spring 17, the opposite sides of the two, the two fixing rods 6 are respectively positioned inside the two telescopic springs 17, the surfaces of the two fixing rods 6 are respectively movably connected with the interiors of the two annular plates 18, the bottom of the radiating fin 7 is fixedly connected with a heat-conducting plate 8, the top of the diode chip 3 is movably connected with the bottom of the heat-conducting plate 8, the heat-conducting plate 8 and the radiating fin 7 are arranged, the two press buttons 4 are pressed to push the two press plates 5 to move downwards, so that the two telescopic springs 17 are contracted, the two fixing rods 6 extend downwards, the mounting block 13 at the bottom of the radiating fin 7 is fixedly inserted into the casing 12 on the placing plate 2, the bottom of the heat-conducting plate 8 is contacted with the top of the diode chip 3 to realize heat transfer, the radiating fins 7 are provided with a plurality of radiating holes, so that the heat dissipation of the diode is quicker, the radiating effect is obvious, the heat dissipation of the diode chip 3 is facilitated, the number of the casings 12 is four, the four casings 12 are respectively positioned at four corners of the top of the placing plate 2, the left side and the right side of the bottom of the radiating fin 7 are fixedly connected with four mounting blocks 13, the number of the mounting blocks 13 is four, the four mounting blocks 13 are respectively positioned at four corners of the bottom of the radiating fin 7, the bottoms of the two mounting blocks 13 are respectively movably inserted with the interiors of the two casings 12, the four mounting blocks 13 are respectively correspondingly inserted with the interiors of the four casings 12, the left side and the right side of the back surface of the shell 1 are respectively movably connected with four U-shaped plates 9, each two U-shaped plates 9 are in one group, two groups of U-shaped plates 9 are respectively positioned at the front surface and the back surface of the shell 1, each group of U-shaped plates 9 is symmetrically arranged by taking a perpendicular bisector at the top of the shell 1 as a symmetry axis, the openings of the two U-shaped plates 9 are backwards, the interiors of the, the back ends of the two sliding columns 19 are respectively connected with the inner walls of the left side and the right side of the U-shaped plate 9 in a sliding manner, the bottoms of the inner walls of the left side and the right side of the U-shaped plate 9 are respectively fixedly connected with a limiting block 20, the bottoms of the two sliding columns 19 are respectively movably connected with the tops of the two limiting blocks 20, the bottom ends of the two insertion blocks 10 are respectively movably sleeved with four fixing blocks 11, every two fixing blocks 11 are in one group, two groups of fixing blocks 11 are respectively positioned on the front side and the back side of the shell 1, each group of fixing blocks 11 is symmetrically arranged by taking a perpendicular bisector at the top of the shell 1 as a symmetry axis, the insertion blocks 10 in the four U-shaped plates 9 are respectively inserted and connected with the insides of the four fixing blocks 11, the front sides of the two fixing blocks 11 respectively penetrate through the back side of the shell 1 and extend to the inside of the shell 1, the surfaces, set up U-shaped plate 9, inserted block 10 and fixed block 11, when heat-conducting plate 8 moves to when contacting with diode chip 3, promote fixed block 11 to the inside removal of casing 1, make the bottom of fixed block 11 and the top swing joint of fin 7, slide downwards in the inside of U-shaped plate 9 through inserted block 10, make the inside grafting of inserted block 10 and the 1 outside fixed block of casing, make the rigidity of fixed block 11, thereby fix the position of fin 7, and then the installation of the diode of being convenient for is fixed.

When in use, the two buttons 4 are pressed to respectively push the two pressing plates 5 to move downwards, so that the two expansion springs 17 are contracted, the two fixing rods 6 extend downwards to drive the radiating fins 7 to move downwards, the mounting blocks 13 at the bottoms of the radiating fins 7 are inserted into the casings 12 on the placing plate 2, then the fixed block 11 is pushed to move towards the inside of the shell 1, so that the bottom of the fixed block 11 is movably connected with the top of the radiating fin 7, the insertion block 10 slides downwards in the U-shaped plate 9, so that the insertion block 10 is inserted into the fixing block 11 on the outer side of the shell 1, the position of the fixing block 11 is fixed, thereby fix the position of fin 7, the top contact through the bottom of heat-conducting plate 8 and diode chip 3 realizes heat transfer, and a plurality of louvres of seting up on the fin 7 make the heat dissipation of diode rapider, and the radiating effect is more obvious to the heat dissipation of the diode chip 3 of being convenient for.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A bidirectional overvoltage protection diode comprising a housing (1), characterized in that: the LED lamp is characterized in that a placing plate (2) is fixedly connected to the inner bottom wall of the shell (1), diode chips (3) are arranged at the top of the placing plate (2), buttons (4) are movably mounted on the left side and the right side of the top of the shell (1), pressing plates (5) are movably connected to the bottom portions of the two buttons (4), fixing rods (6) are fixedly connected to the bottoms of the two pressing plates (5), radiating fins (7) are fixedly connected to one ends, far away from the two pressing plates (5), of the two fixing rods (6), heat conducting plates (8) are fixedly connected to the bottoms of the radiating fins (7), the top portions of the diode chips (3) are movably connected to the bottoms of the heat conducting plates (8), U-shaped plates (9) are movably connected to the left side and the right side of the back of the shell (1), openings of the two U-shaped plates (9) face backwards, inserting blocks, two fixed block (11) have all been cup jointed in the activity to the bottom of inserted block (10), two the front side of fixed block (11) runs through the back of casing (1) respectively and extends to the inside of casing (1), two the surface of fixed block (11) respectively with the inside swing joint of casing (1), two the positive bottom of fixed block (11) offsets with the left and right sides at fin (7) top respectively and holds.

2. A bidirectional overvoltage protection diode according to claim 1, wherein: place the equal fixedly connected with shell (12) of the left and right sides at board (2) top, the equal fixedly connected with installation piece (13) of the left and right sides of the bottom of fin (7), two the bottom of installation piece (13) is pegged graft with the inside activity of two shell (12) respectively.

3. A bidirectional overvoltage protection diode according to claim 1, wherein: the equal fixedly connected with connecting plate (14) of inner wall of casing (1) left and right sides, two vertical spout (15) have all been seted up at the top of connecting plate (14), the equal fixedly connected with T shape slider (16) of the left and right sides of fin (7), two T shape slider (16) respectively with the inside sliding connection of two vertical spout (15).

4. A bidirectional overvoltage protection diode according to claim 3 wherein: the bottom of the two pressing plates (5) is fixedly connected with an expansion spring (17), the opposite side of the connecting plate (14) is fixedly connected with an annular plate (18), and the bottom ends of the expansion springs (17) are fixedly connected with the tops of the two annular plates (18) respectively.

5. A bidirectional overvoltage protection diode according to claim 4, wherein: the two fixing rods (6) are respectively positioned inside the two telescopic springs (17), and the surfaces of the two fixing rods (6) are respectively movably connected with the insides of the two annular plates (18).

6. A bidirectional overvoltage protection diode according to claim 1, wherein: two equal fixedly connected with traveller (19) in the left and right sides of inserted block (10), two the one end that traveller (19) carried on the back mutually respectively with the inner wall sliding connection of the U-shaped plate (9) left and right sides, the equal fixedly connected with stopper (20) in bottom of U-shaped plate (9) left and right sides inner wall, two the bottom of traveller (19) respectively with the top swing joint of two stoppers (20).