CN215222576U

CN215222576U - Circuit structure for power supply ESD protection

Info

Publication number: CN215222576U
Application number: CN202120356784.7U
Authority: CN
Inventors: 郭虎; 徐婷婷; 王照新; 李建伟
Original assignee: Suzhou Hangxin Times Microelectronics Co ltd
Current assignee: Suzhou Hangxin Times Microelectronics Co ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-12-17
Anticipated expiration: 2031-02-07

Abstract

The utility model relates to the technical field of circuits, a circuit structure for power ESD protection is provided, including casing and base, the casing embedding is on the top of base, and the inside of casing is fixed and has been seted up and has been sealed the chamber, and sealed chamber is located inside one side position of casing, and the inside embedding in sealed chamber is provided with the earth connection, and the earth connection outer end passes the casing simultaneously and extends to the outside, and the circuit part electric connection of installation is treated to the other end and outside, and the inside of earth connection is fixed insulating layer, antistatic backing and the rubber layer of being provided with in proper order outside from the inside. Through the antistatic layer that double-deck stack set up, at the in-process of using, the iron fiber layer wherein can derive static, and the antistatic properties on antistatic nylon layer is good to make the earth connection effectively reduce the production of static.

Description

Circuit structure for power supply ESD protection

Technical Field

The utility model relates to a circuit technology field, more specifically the utility model relates to a circuit structure for power ESD protection that says so.

Background

An ESD (electrostatic discharge) phenomenon, which is an instantaneous high-voltage pulse, and a large amount of electric charges released instantaneously may damage functional devices inside the integrated circuit;

a power source is a device that converts other forms of energy into electrical energy. The power source is based on the self-magnetism electricity generation principle, and the power source is generated by renewable energy sources such as water power, wind power, sea tide, dam water pressure difference, solar energy and the like, coal burning, oil residue and the like;

in the use process of the existing power supply, a common power supply shell cannot effectively prevent static electricity, the power supply shell cannot be used after being wetted by water, meanwhile, in order to achieve the effect of preventing static electricity, a grounding wire is usually arranged between circuit components of the existing power supply, the existing grounding wire solves the problem that a part of static electricity is generated, a large amount of static electricity can be accumulated on the surface of the existing grounding wire when the existing grounding wire is used, and certain safety risk still exists.

Therefore, it is necessary to design a new circuit structure for power supply ESD protection to solve the above drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model is used for circuit structure's of power ESD protection purpose is reached by following specific technological means:

the utility model provides a circuit structure for protection of power ESD, which comprises a housin and a pedestal, the casing embedding is on the top of base, the inside of casing is fixed and is seted up closed chamber, closed chamber is located inside one side position of casing, closed chamber's inside embedding is provided with the earth connection, the earth connection outer end passes the casing simultaneously and extends to the outside, the circuit part electric connection that the other end waited to install with the outside, the inside of earth connection is fixed from inside to outside and is provided with the insulating layer, antistatic backing and rubber layer in proper order, the fixed surface of casing is provided with the heat dissipation layer, the fixed baffle that is provided with between heat dissipation layer and the closed chamber, fixed second enclosed layer and the first enclosed layer of being provided with between casing and the base, the surface embedding of base is provided with the cardboard, fix the joint through the cardboard between casing and the base, the lateral surface of casing and base is fixed and is provided with the waterproof layer, shielding layer and insulating layer, the waterproof layer, the base, The shielding layer and the heat insulation layer are arranged from outside to inside in sequence.

Further preferred embodiments: the rubber layer is arranged on the outermost layer of the grounding wire and is a sponge rubber layer, and the thickness of the rubber layer is controlled to be 0.20-0.35 mm.

Further preferred embodiments: the anti-static layer and the rubber layer are fixed through resin adhesive adhesion, and the anti-static layer is respectively an iron fiber layer and an anti-static nylon layer which are arranged in a superposed mode.

Further preferred embodiments: the insulating layer is set to be a resin paint layer and a double-layer asbestos layer.

Further preferred embodiments: the heat dissipation layer is located on one side of the outer side of the shell, the heat dissipation layer is located on one side of the closed cavity, and through holes are uniformly distributed on the surface of the heat dissipation layer.

Further preferred embodiments: the partition board is a plastic board, and through holes are arranged on the surface of the partition board.

Further preferred embodiments: the second seal layer is attached to a connecting gap between the shell and the base and is arranged to be a rubber seal layer, and the first seal layer is located at a clamping position in front of the shell and the base and is arranged to be a rubber seal layer.

Further preferred embodiments: the shielding layer is set as an electrostatic shielding layer and formed by weaving double-layer alloy wires in a staggered mode, and the heat insulation layer is set as a centrifugal glass fiber layer.

Has the advantages that:

this kind of a circuit structure for power ESD protection, through the antistatic backing that the bilayer stack set up, at the in-process that uses, the iron fiber layer wherein can derive static, and the antistatic performance on antistatic nylon layer is good to make the earth connection effectively reduce the production of static.

According to the circuit structure for protecting the power ESD, the insulating layer is arranged at the position, closest to the lead, of the grounding wire, so that the insulating property of the power line is effectively improved.

This kind of a circuit structure for protection of power ESD through the heat dissipation layer, is convenient for outwards discharge the heat in closed chamber and the casing, strengthens insulating effect through the baffle simultaneously.

This kind of a circuit structure for power ESD protection, through set up first closed layer and second closed layer between casing and base, strengthens the connection closure between the two, is favorable to electrostatic protection.

This kind of a circuit structure for protection of power ESD, through shielding layer and insulating layer, the effectual antistatic effect of reinforcing casing and base, and heat-resisting life.

Drawings

Fig. 1 is a cross-sectional view of the overall structure of the present invention.

FIG. 2 is an enlarged view of the structure at A in FIG. 1 of the present invention

Fig. 3 is a sectional view of the housing structure of the present invention.

Fig. 4 is a cross-sectional view of the internal structure of the ground wire of the present invention.

In FIGS. 1-4: the heat dissipation device comprises a shell 1, a base 2, a closed cavity 3, a ground wire 4, a heat dissipation layer 5, a partition plate 6, a clamping plate 7, a first closed layer 8, a second closed layer 9, a waterproof layer 10, a shielding layer 11, a heat insulation layer 12, an insulating layer 13, an anti-static layer 14 and a rubber layer 15.

Detailed Description

As shown in figures 1 to 4:

the utility model provides a circuit structure for power ESD protection, which comprises a shell 1 and a base 2, wherein the shell 1 is embedded at the top end of the base 2, a closed cavity 3 is fixedly arranged inside the shell 1, the closed cavity 3 is positioned at one side inside the shell 1, an earth wire 4 is embedded inside the closed cavity 3, the outer end of the earth wire 4 passes through the shell 1 and extends to the outside, the other end is electrically connected with a circuit component to be installed outside, an insulating layer 13, an antistatic layer 14 and a rubber layer 15 are fixedly arranged inside the earth wire 4 from the inside to the outside in sequence, a heat dissipation layer 5 is fixedly arranged on the surface of the shell 1, a partition plate 6 is fixedly arranged between the heat dissipation layer 5 and the closed cavity 3, a second closed layer 9 and a first closed layer 8 are fixedly arranged between the shell 1 and the base 2, a clamping plate 7 is embedded on the surface of the base 2, and the shell 1 and the base 2 are fixedly clamped through the clamping plate 7, the outer side surfaces of the shell 1 and the base 2 are fixedly provided with a waterproof layer 10, a shielding layer 11 and a heat insulation layer 12, and the waterproof layer 10, the shielding layer 11 and the heat insulation layer 12 are sequentially arranged from outside to inside.

The rubber layer 15 is arranged on the outermost layer of the grounding wire 4 and is a sponge rubber layer, the thickness of the rubber layer is controlled to be 0.20-0.35 mm, and the rubber layer 15 is arranged on the outermost layer of the grounding wire 4, so that the grounding wire 4 has a good waterproof sealing effect.

Wherein, it is fixed through the resin glue adhesion between antistatic backing 14 and the rubber layer 15, and antistatic backing 14 is iron fiber layer and antistatic nylon layer stack setting respectively, and through the antistatic backing 14 that the bilayer stack set up, at the in-process of using, the iron fiber layer wherein can derive static, and the antistatic properties on antistatic nylon layer is good to make earth connection 4 effectively reduce the production of static.

Wherein, insulating layer 13 sets up to resin lacquer layer and double-deck asbestos layer, sets up insulating layer 13 through the position that is closest to the wire at earth connection 4, effectively improves the insulating nature of this power cord.

Wherein, the heat dissipation layer 5 is positioned on one side of the outer side of the shell 1, the heat dissipation layer 5 is positioned on one side of the closed cavity 3 at the same time, and through holes are uniformly distributed on the surface.

Wherein, the baffle 6 sets up to the plastic board, and the surface sets up the thru hole, through heat dissipation layer 5, is convenient for outwards discharge the heat in closed chamber 3 and the casing 1, strengthens insulating effect through baffle 6 simultaneously.

Wherein, the second seal coat 9 laminating casing 1 and the base 2 between the connection gap setting, and set up to the rubber seal coat, first seal coat 8 is located the joint position before casing 1 and base 2, sets up to the rubber seal coat, through set up first seal coat 8 and second seal coat 9 between casing 1 and base 2, strengthens the connection closure between the two, is favorable to electrostatic protection.

Wherein, shielding layer 11 sets up to the electrostatic shield, forms for the crisscross weaving of double-deck alloy silk, and insulating layer 12 sets up to centrifugal glass fiber layer, through shielding layer 11 and insulating layer 12, effectual reinforcing casing 1 and base 2 prevent the static effect, and heat-resisting life.

The concrete using mode and the effect of this embodiment, treat the circuit part of installation and carry out electric connection with earth connection 4 to the outside inside base 2, with carrying out butt joint through cardboard 7 between casing 1 and the base 2 and fix, in the in-process of using, the heat is outwards discharged through heat dissipation layer 5 in casing 1 and the closed chamber 3, and earth connection 4 is when connecting circuit part work, under antistatic backing 14's effect, effectual derivation static, good antistatic effect has simultaneously, reduce the production of device static, and the inside shielding layer 11 that sets up of casing 1 and base 2 wall, can effectual reinforcing means holistic antistatic effect, avoid a large amount of static charges of surface gathering.

Claims

1. A circuit structure for power ESD protection comprises a shell (1) and a base (2), wherein the shell (1) is embedded in the top end of the base (2), and is characterized in that: the inner part of the shell (1) is fixedly provided with a closed cavity (3), the closed cavity (3) is positioned at one side position in the shell (1), a grounding wire (4) is embedded in the closed cavity (3), the outer end of the grounding wire (4) penetrates through the shell (1) and extends to the outside, the other end of the grounding wire is electrically connected with a circuit component to be installed outside, an insulating layer (13), an antistatic layer (14) and a rubber layer (15) are fixedly arranged in the grounding wire (4) from inside to outside in sequence, a heat dissipation layer (5) is fixedly arranged on the surface of the shell (1), a partition plate (6) is fixedly arranged between the heat dissipation layer (5) and the closed cavity (3), a second closed layer (9) and a first closed layer (8) are fixedly arranged between the shell (1) and the base (2), a clamping plate (7) is embedded in the surface of the base (2), and the shell (1) and the base (2) are fixedly clamped through the clamping plate (7), the waterproof layer (10), the shielding layer (11) and the heat insulation layer (12) are fixedly arranged on the outer side surfaces of the shell (1) and the base (2), and the waterproof layer (10), the shielding layer (11) and the heat insulation layer (12) are sequentially arranged from outside to inside.

2. The circuit structure for power supply ESD protection according to claim 1, wherein: the rubber layer (15) is located on the outermost layer of the grounding wire (4), is a sponge rubber layer, and is controlled to be 0.20-0.35 mm in thickness.

3. The circuit structure for power supply ESD protection according to claim 1, wherein: the anti-static layer (14) and the rubber layer (15) are fixed through resin adhesive adhesion, and the anti-static layer (14) is formed by superposing an iron fiber layer and an anti-static nylon layer.

4. The circuit structure for power supply ESD protection according to claim 1, wherein: the insulating layer (13) is set to be a resin paint layer and a double-layer asbestos layer.

5. The circuit structure for power supply ESD protection according to claim 1, wherein: the heat dissipation layer (5) is positioned on one side of the outer side of the shell (1), the heat dissipation layer (5) is positioned on one side of the closed cavity (3) at the same time, and the surface of the heat dissipation layer is distributed with uniform through holes.

6. The circuit structure for power supply ESD protection according to claim 1, wherein: the partition plate (6) is a plastic plate, and through holes are formed in the surface of the partition plate.

7. The circuit structure for power supply ESD protection according to claim 1, wherein: the connection gap setting between second sealing layer (9) laminating casing (1) and base (2) just sets up to the rubber sealing layer, and first sealing layer (8) are located the joint position before casing (1) and base (2), set up to the rubber sealing layer.

8. The circuit structure for power supply ESD protection according to claim 1, wherein: the shielding layer (11) is an electrostatic shielding layer and formed by weaving double-layer alloy wires in a staggered mode, and the heat insulation layer (12) is a centrifugal glass fiber layer.