CN218333798U

CN218333798U - Bidirectional low-voltage TVS diode capable of realizing unidirectional voltage loss and self disconnection

Info

Publication number: CN218333798U
Application number: CN202222067800.8U
Authority: CN
Inventors: 曹德祥; 范诗斌; 翁月明
Original assignee: Suzhou Beiteli Electronic Technology Co ltd
Current assignee: Suzhou Beiteli Electronic Technology Co ltd
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2023-01-17
Anticipated expiration: 2032-08-08

Abstract

The utility model relates to a diode technical field, a two-way low pressure TVS diode of one-way decompression self-disconnection, which comprises a fixing pedestal, unable adjustment base's last fixed surface is connected with the diode main part, the both ends of diode main part are provided with the self-breaking device who is used for automatic disconnection when the decompression, the inside of self-breaking device is provided with and is used for its canceling release mechanical system who resets and connect, interlock board sliding connection is in the inside of self-breaking device, release link fixed connection is in one side of interlock board. This two-way low pressure TVS diode of one-way decompression self-disconnection, the installation awl post joint that sets up through the lower surface of diode main part runs through in the mounting hole of seting up on the unable adjustment base surface to in fixing the diode main part, the electrical connection is realized with bimetallic strip, connecting wire and wire joint to the connecting contact of diode main part both sides simultaneously, in order to guarantee the normal work of diode main part.

Description

Bidirectional low-voltage TVS diode capable of realizing unidirectional voltage loss and self-disconnection

Technical Field

The utility model relates to a diode technical field specifically is a two-way low pressure TVS diode of one-way decompression self-disconnection.

Background

The TVS diode is also called a transient voltage suppressor diode, and is an electronic component for protection, which can protect electrical equipment from voltage spikes induced by a wire.

Present two-way low pressure TVS diode is when using, if silicon chip resistivity axial or radial inhomogeneous impurity concentration is inhomogeneous, the breakdown voltage is different everywhere for the silicon chip, and core current divides when making the device breakdown is inhomogeneous, very easily causes unidirectional decompression then to the back diode part burns out after many times surge strikes, and is not enough based on current technique, the utility model discloses a two-way low pressure TVS diode of one-way decompression self-disconnection.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a two-way low pressure TVS diode of one-way decompression self-disconnection possesses the advantage that can be fast with TVS diode decompression one side disconnect-connection, has solved the problem that one-way decompression back many times surge impact diode part burns out.

The utility model provides a following technical scheme: a bidirectional low-voltage TVS diode capable of realizing unidirectional voltage loss and self disconnection comprises a fixed base, wherein a diode main body is fixedly connected to the upper surface of the fixed base, self-disconnection devices for automatic disconnection in voltage loss are arranged at two ends of the diode main body, and a reset mechanism for resetting and connecting the self-disconnection devices is arranged in the self-disconnection devices;

the reset mechanism comprises a linkage plate and a reset rod, the linkage plate is connected inside the self-breaking device in a sliding mode, and the reset rod is fixedly connected to one side of the linkage plate.

As an optimal technical scheme of the utility model, canceling release mechanical system still includes the spout and promotes the piece, the spout is seted up at the upper surface of autotomy device, promote a sliding connection in the inside of spout.

As an optimized technical scheme of the utility model, unable adjustment base's upper surface runs through and has seted up the mounting hole.

As a preferred technical scheme of the utility model, the both sides fixedly connected with connection contact of diode main part, the lower fixed surface of diode main part is connected with the installation awl post, installation awl post fixed clamping connects in the inside of mounting hole.

As a preferred technical scheme of the utility model, the device of autotomying includes equipment box, connecting wire, wire joint and bimetallic strip, the fixed surface of pegging graft at the connection contact of equipment box, connecting wire fixed connection is in one side of equipment box, wire joint fixed connection is at the upper surface of connecting wire outer end, the bimetallic strip sets up the inside at the equipment box.

As an optimal technical scheme of the utility model, connecting wire, wire joint, bimetallic strip and connecting contact are the electrical property and link to each other, the bimetallic strip contacts with connecting contact.

As a preferred technical scheme of the utility model, the lower fixed surface that promotes the piece is connected with the trace, two upper and lower difference sliding connection of release link are at the top surface and the bottom surface of bimetallic strip.

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

1. this one-way decompression is from two-way low pressure TVS diode of disconnection, be connected with the user equipment through the wire joint with the diode main part through both sides, if when the connecting contact of certain one side of diode main part takes place the decompression, silicon chip resistivity axial or radial inhomogeneous impurity concentration is inhomogeneous, the silicon chip breakdown voltage is different everywhere, core current divides to distribute inhomogeneous when making the device puncture, thereby the connecting contact that can make decompression one side produces a large amount of heat, heat transfer to the inside of bimetallic strip makes bimetallic strip turn into outside the deformation from inside sunken automatic to, remove the connection between bimetallic strip and the connecting contact, thereby realize the automatic disconnection, the device is convenient for make the diode main part automatic disconnection when one-way decompression.

2. This two-way low pressure TVS diode of one-way decompression self-disconnection if unable automatic deformation reconversion after normal temperature through bimetallic strip, press the promotion piece with the finger and promote it to the opposite side from one side of spout for promote the piece and pass through the interlock board and drive the release link and cross on the surface of bimetallic strip, make the release link dial the convex bimetallic strip back to reset, be connected with the connection contact again can, the device is convenient for with diode recovery route.

Drawings

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

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

fig. 3 is a schematic view of the diode main body explosion bottom view structure of the present invention;

FIG. 4 is a schematic cross-sectional view of the self-breaking device of the present invention;

fig. 5 is a schematic view of the sectional structure of the resetting mechanism of the present invention.

In the figure: 1. a fixed base; 101. mounting holes; 2. a diode body; 201. connecting the contacts; 202. installing a conical column; 3. a self-breaking device; 301. an equipment box; 302. connecting a lead; 303. a wire connection; 304. a bimetal; 4. a reset mechanism; 401. a chute; 402. a pushing block; 403. a linkage plate; 404. a reset rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 efforts all belong to the protection scope of the present invention.

Referring to fig. 1-5, a bidirectional low-voltage TVS diode with unidirectional voltage loss and self-disconnection comprises a fixed base 1, a diode main body 2 is fixedly connected to the upper surface of the fixed base 1, self-disconnection devices 3 for automatically disconnecting when voltage loss occurs are arranged at two ends of the diode main body 2, a reset mechanism 4 for resetting and connecting the self-disconnection devices 3 is arranged inside the self-disconnection devices 3, a mounting hole 101 is formed in the upper surface of the fixed base 1 in a penetrating manner, and the diode main body 2 is conveniently fixed to the upper surface of the fixed base by arranging the mounting hole 101.

Referring to fig. 5, the reset mechanism 4 includes a linkage plate 403 and a reset rod 404, the linkage plate 403 is slidably connected inside the self-breaking device 3, the reset rod 404 is fixedly connected to one side of the linkage plate 403, the reset mechanism 4 further includes a sliding slot 401 and a push block 402, the sliding slot 401 is opened on the upper surface of the self-breaking device 3, the push block 402 is slidably connected inside the sliding slot 401, the linkage plate 403 is fixedly connected to the lower surface of the push block 402, the upper and lower two of the reset rod 404 are respectively slidably connected to the top surface and the bottom surface of the bimetal 304, and the reset rod 404 is arranged to facilitate the protruding bimetal 304 to be reset and be connected to the connection contact 201 again.

Referring to fig. 3, the two sides of the diode body 2 are fixedly connected with the connecting contacts 201, the lower surface of the diode body 2 is fixedly connected with the mounting tapered column 202, the mounting tapered column 202 is fixedly clamped inside the mounting hole 101, and the diode body 2 is conveniently fixed by arranging the mounting tapered column 202.

Referring to fig. 4, the self-disconnection apparatus 3 includes an equipment box 301, a connecting wire 302, a wire connector 303 and a bimetal 304, the equipment box 301 is fixedly inserted on the surface of the connecting contact 201, the connecting wire 302 is fixedly connected to one side of the equipment box 301, the wire connector 303 is fixedly connected to the upper surface of the outer end of the connecting wire 302, the bimetal 304 is disposed inside the equipment box 301, the connecting wire 302, the wire connector 303, the bimetal 304 and the connecting contact 201 are electrically connected, the bimetal 304 is in contact with the connecting contact 201, and the ventilation bimetal 304 is configured to change its shape despite temperature changes when the temperature changes relatively high, so that the bimetal 304 can be quickly disconnected when the connecting contact 201 is heated due to pressure loss on one side of the diode body 2.

The working principle is that when the bidirectional low-voltage TVS diode with unidirectional voltage loss and self-disconnection is used, in an initial state, the mounting conical column 202 arranged on the lower surface of the diode main body 2 is clamped in the mounting hole 101 formed in the surface of the fixing base 1 in a penetrating manner so as to fix the diode main body 2, meanwhile, the connecting contacts 201 on the two sides of the diode main body 2 are electrically connected with the bimetallic strip 304, the connecting lead 302 and the lead connector 303 so as to ensure the normal operation of the diode main body 2, and meanwhile, the upper surface and the lower surface of the bimetallic strip 304 are both provided with the reset rods 404 which are connected with the pushing block 402 through the linkage plates 403 so as to restore the connection of the disconnected bimetallic strip 304;

when the diode main body 2 needs to be automatically disconnected during unidirectional voltage loss, the diode main body 2 is firstly connected with a user device through the wire connectors 303 on both sides, if the connection contact 201 on one side of the diode main body 2 is subjected to voltage loss, the resistivity of a silicon wafer is not uniform in the axial direction or the radial direction, the breakdown voltage of the silicon wafer is different at each position, the core current distribution during device breakdown is not uniform, so that the connection contact 201 on the voltage loss side generates a large amount of heat, the heat is transferred to the inside of the bimetal 304, the bimetal 304 is automatically deformed from the inward recess to the outward projection, the connection between the bimetal 304 and the connection contact 201 is released, and the automatic disconnection is realized.

When the diode needs to be restored to the channel, if the bimetallic strip 304 cannot be automatically deformed and restored to the original state after being restored to the normal temperature, at this time, the pushing block 402 is pressed by a finger to push the bimetallic strip from one side of the chute 401 to the other side, so that the pushing block 402 drives the reset rod 404 to pass through the surface of the bimetallic strip 304 through the linkage plate 403, the reset rod 404 is enabled to reset the protruding bimetallic strip 304, and the bimetallic strip is connected with the connecting contact 201 again.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various 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. The utility model provides a two-way low pressure TVS diode of one-way decompression self-disconnection, includes unable adjustment base (1), its characterized in that: the upper surface of the fixed base (1) is fixedly connected with a diode main body (2), two ends of the diode main body (2) are provided with self-breaking devices (3) used for automatically breaking when the voltage is lost, and a reset mechanism (4) used for resetting and connecting the self-breaking devices (3) is arranged in the self-breaking devices (3);

reset mechanism (4), reset mechanism (4) include interlock board (403) and release link (404), interlock board (403) sliding connection is in the inside of autotomying device (3), release link (404) fixed connection is in one side of interlock board (403).

2. The unidirectional voltage-loss self-disconnecting bidirectional low-voltage TVS diode as claimed in claim 1, wherein: the resetting mechanism (4) further comprises a sliding groove (401) and a pushing block (402), the sliding groove (401) is formed in the upper surface of the automatic breaking device (3), and the pushing block (402) is connected to the inside of the sliding groove (401) in a sliding mode.

3. The unidirectional voltage-loss self-disconnecting bidirectional low-voltage TVS diode as claimed in claim 1, wherein: the upper surface of the fixed base (1) is provided with a mounting hole (101) in a penetrating way.

4. The unidirectional voltage-loss self-disconnecting bidirectional low-voltage TVS diode as claimed in claim 1, wherein: the diode is characterized in that connecting contacts (201) are fixedly connected to two sides of the diode main body (2), an installation conical column (202) is fixedly connected to the lower surface of the diode main body (2), and the installation conical column (202) is fixedly clamped inside the installation hole (101).

5. The unidirectional voltage-loss self-disconnection bidirectional low-voltage TVS diode as claimed in claim 1, wherein: the automatic breaking device (3) comprises an equipment box (301), a connecting lead (302), a lead joint (303) and a bimetallic strip (304), wherein the equipment box (301) is fixedly inserted on the surface of the connecting contact (201), the connecting lead (302) is fixedly connected to one side of the equipment box (301), the lead joint (303) is fixedly connected to the upper surface of the outer end of the connecting lead (302), and the bimetallic strip (304) is arranged inside the equipment box (301).

6. The unidirectional voltage-loss self-disconnection bidirectional low-voltage TVS diode as claimed in claim 5, wherein: the connecting wire (302), the wire joint (303), the bimetallic strip (304) and the connecting contact (201) are electrically connected, and the bimetallic strip (304) is in contact with the connecting contact (201).

7. The unidirectional voltage-loss self-disconnection bidirectional low-voltage TVS diode as claimed in claim 2, wherein: the lower surface of the pushing block (402) is fixedly connected with a linkage plate (403), and the upper and lower two of the reset rod (404) are respectively connected with the top surface and the bottom surface of the bimetallic strip (304) in a sliding manner.