CN215527706U

CN215527706U - Bidirectional TVS device structure

Info

Publication number: CN215527706U
Application number: CN202120505808.0U
Authority: CN
Inventors: 周伟伟; 欧阳炜霞; 高良通; 周懿冉; 邓珂; 杨许亮; 陈赵泷
Original assignee: Shanghai Weipan Microelectronic Co ltd
Current assignee: Shanghai Weipan Microelectronic Co ltd
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2022-01-14
Anticipated expiration: 2031-03-10

Abstract

The utility model discloses a bidirectional TVS device structure, which belongs to the field of TVS device structures, wherein a device structure main body comprises a protective cover, a cover plate and a TVS device, wherein springs are arranged on the inner side wall of the protective cover, two groups of springs are symmetrically arranged on the inner side wall of the protective cover, a clamping plate is arranged at the other end of each spring, and the outer side wall of the protective cover is connected with the outer side wall of a dustproof net through a screw. The protective cover, the spring, the clamping plate, the cover plate and the bolt are mutually matched, so that the protective performance can be improved, the impact damage can be avoided, the ventilation property of the structural main body of the TVS device can be improved, the service life of the TVS device can be prevented from being influenced by overhigh temperature through the mutual matching of the protective cover, the heat dissipation port, the screw and the dust screen, and the TVS device is suitable for being widely popularized and used.

Description

Bidirectional TVS device structure

Technical Field

The utility model relates to the technical field of TVS device structures, in particular to a bidirectional TVS device structure.

Background

Transient voltage suppressing diodes (TVS) are widely used for electrostatic and overvoltage protection of semiconductors, sensitive parts, secondary power supplies, signal circuits, and the like. The TVS has the advantages of small volume, high power, quick response, no noise, reliable performance, long service life and the like. The breakdown voltage of commonly used TVS tubes has a range of values from 5V to 550V.

Patent No. CN202010496991.2 discloses a TVS device and a method for manufacturing the same, which includes an soi substrate including a substrate of a first conductivity type, an insulating layer, and an epitaxial layer of the first conductivity type, wherein the surface of the epitaxial layer is divided into a TVS diode region and a plurality of low-capacitance diode regions by an isolation structure; a well region of the second conductivity type is arranged on the surface of the epitaxial layer of the TVS diode region, and a TVS injection region of the first conductivity type is arranged on the surface of the well region to form a TVS diode; and a common N + region and a common P + region are arranged on the surface of the N-type epitaxial layer in the low-capacitance diode region to form a low-capacitance diode.

At present, the technology has certain defects: 1. the device structure is easy to damage due to poor protection performance of the device structure; 2. the poor heat dissipation of this device structure leads to the life reduction of TVS device.

SUMMERY OF THE UTILITY MODEL

The utility model provides a bidirectional TVS device structure, which can increase the protection performance and avoid impact damage through the mutual matching of a protective cover, a spring, a clamping plate, a cover plate and a bolt, can increase the air permeability of a device structure main body through the mutual matching of the protective cover, a heat dissipation port, a screw and a dust screen, can avoid the influence of overhigh temperature on the service life of a TVS device, and can effectively solve the problems in the background art.

The specific technical scheme provided by the utility model is as follows:

the utility model provides a bidirectional TVS device structure, which comprises a device structure main body, wherein the device structure main body comprises a protective cover, a cover plate and a TVS device, springs are arranged on the inner side wall of the protective cover, two groups of springs are symmetrically arranged on the inner side wall of the protective cover, a clamping plate is arranged at the other end of each spring, and the outer side wall of the protective cover is connected with the outer side wall of a dustproof net through a screw.

Optionally, a through groove is formed in the left side of the outer side wall of the protective cover, and the TVS device penetrates through the through groove.

Optionally, the outer side wall of the protective cover is provided with a heat dissipation opening, and the dustproof net is located on one side of the heat dissipation opening.

Optionally, the top of the protective cover is connected with the outer side wall of the cover plate through a bolt.

Optionally, the TVS device is located between the two sets of clamping plates.

The utility model has the following beneficial effects:

1. the TVS device protection device is practical, convenient to operate and good in using effect, a set of symmetrical springs are mounted on the inner side wall of the protection cover, the clamping plates are mounted at the other ends of the springs, the TVS device is located between the two sets of clamping plates, and after the protection cover is impacted, the springs are extruded, so that a set of reaction force can be applied by the springs to offset the received impact pressure, the TVS device can be effectively protected, the top of the protection cover is connected with the outer side wall of the cover plate through the bolts, the cover plate can effectively seal the top of the protection cover, the TVS device can be effectively protected, and the TVS device is prevented from being easily damaged after being impacted externally.

2. According to the utility model, the outer side wall of the protective cover is provided with the heat radiating holes, the outer side wall of the protective cover is connected with the outer side wall of the dustproof net through the screws, the dustproof net can effectively prevent dust from entering the inner side wall of the protective cover to damage electronic elements, and the outer side wall of the protective cover is provided with the group of symmetrical heat radiating holes, so that after the temperature is too high, external air enters the protective cover through the heat radiating holes, the temperature in the protective cover can be reduced, the TVS device can be protected, and the service life of the TVS device is prolonged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of a bidirectional TVS device structure according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a protective cover of a bidirectional TVS device structure according to an embodiment of the present invention.

In the figure: 1. a device structure body; 2. a protective cover; 3. a cover plate; 4. a TVS device; 5. a bolt; 6. A spring; 7. a splint; 8. a through groove; 9. a screw; 10. a dust screen; 11. and a heat dissipation port.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A structure of a bidirectional TVS device according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 2.

As shown in fig. 1-2, a two-way TVS device structure, device structure main part 1 includes that protection casing 2, apron 3 and TVS device 4 make up and constitute, spring 6 is installed to the inside wall of protection casing 2, spring 6 has two sets of inside walls that are the symmetry and install at protection casing 2, splint 7 are installed to spring 6's the other end, the lateral wall of protection casing 2 passes through the screw 9 with the lateral wall of dust screen 10 and is connected. Wherein, mutually support through protection casing 2, spring 6, splint 7, apron 3 and bolt 5 to can increase the protectiveness and avoid the striking to damage, thereby can increase the device main structure body 1 gas permeability through mutually supporting of protection casing 2, thermovent 11, screw 9 and dust screen 10 and avoid the life of high temperature influence TVS device 4.

In this embodiment, as shown in fig. 2, a through groove 8 is formed on the left side of the outer side wall of the shield 2, and the TVS device 4 penetrates through the through groove 8. Wherein, conveniently be connected with external signal unit.

In this embodiment, as shown in fig. 1, a heat dissipation opening 11 is formed in an outer side wall of the protective cover 2, and the dust screen 10 is located on one side of the heat dissipation opening 11. Wherein, can effectually avoid the dust to enter into in the protecting crust.

In this embodiment, as shown in fig. 1, the top of the shield 2 is connected to the outer side wall of the cover plate 3 by bolts 5. Wherein the protection cover 2 can be effectively sealed.

In this embodiment, as shown in fig. 1-2, the TVS device 4 is located between two sets of clamping plates 7. Wherein the TVS device 4 can be protected.

It should be noted that, the utility model is a bidirectional TVS device structure, when in operation, a set of symmetrical springs 6 is installed on the inner side wall of the protection cover 2, a clamping plate 7 is installed at the other end of the spring 6, the TVS device 4 is located between the two sets of clamping plates 7, when the protection cover 2 is impacted, the spring 6 is squeezed, so that the spring 6 can apply a set of reaction force to offset the impact pressure, thereby effectively protecting the TVS device 4, the top of the protection cover 2 is connected with the outer side wall of the cover plate 3 through the bolt 5, thereby the cover plate 3 can effectively seal the top of the protection cover 2, effectively protect the TVS device 4, and avoid easy damage after external impact, the outer side wall of the protection cover 2 is provided with a heat dissipation port 11, the outer side wall of the protection cover 2 is connected with the outer side wall of the dust screen 10 through the bolt 9, the dust screen 10 can effectively avoid dust from entering the inner side wall of the protection cover 2 to damage electronic components, because the lateral wall of protection casing 2 has seted up the thermovent 11 of a set of symmetry to after the high temperature, outside air passes through thermovent 11 and enters into protection casing 2 in, can reduce the temperature in the protection casing 2, thereby can protect TVS device 4, increase its life.

The utility model relates to a bidirectional TVS device structure 1 and a device structure main body; 2. a protective cover; 3. a cover plate; 4. a TVS device; 5. a bolt; 6. a spring; 7. a splint; 8. a through groove; 9. a screw; 10. a dust screen; 11. the heat sink features are all standard or known to those skilled in the art, and their structure and principle are known to those skilled in the art through technical manuals or through routine experimentation.

It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the utility model. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.

Claims

1. The utility model provides a two-way TVS device structure, its characterized in that, its device structure main part (1) constitutes including protection casing (2), apron (3) and TVS device (4) combination, spring (6) are installed to the inside wall of protection casing (2), spring (6) have two sets of inside walls that are the symmetry and install in protection casing (2), splint (7) are installed to the other end of spring (6), the lateral wall of protection casing (2) passes through screw (9) with the lateral wall of dust screen (10) and is connected.

2. The structure of a bidirectional TVS device as claimed in claim 1, wherein said protection cover (2) has a through slot (8) opened on the left side of the outer sidewall and the TVS device (4) passes through the through slot (8).

3. The structure of claim 1, wherein the outer sidewall of the shield (2) is opened with a heat sink (11) and the dust screen (10) is located at one side of the heat sink (11).

4. A bidirectional TVS device structure as claimed in claim 1, wherein the top of said shield (2) is connected to the outer sidewall of the cover plate (3) by means of bolts (5).

5. A bidirectional TVS device structure as in claim 1, wherein said TVS device (4) is located between two sets of clamping plates (7).