CN210958930U - Circuit electrostatic protection device and electronic equipment using same - Google Patents

Abstract

The utility model provides a circuit electrostatic protection device and use this circuit electrostatic protection device's electronic equipment, the device includes casing and electrostatic protection subassembly, the circuit board is located between casing and the electrostatic protection subassembly, the electrostatic protection subassembly includes assembly plate and electrostatic protection board, the electrostatic protection board includes discrete distribution's protection piece and locates the connecting plate between the adjacent protection piece, the protection piece includes the fixed plate, first contact shell fragment and second contact shell fragment, be equipped with the electrostatic protection contact point on the circuit board, first contact shell fragment contacts with the electrostatic protection contact point, the casing is equipped with the constant head tank towards one side inner wall of electrostatic protection subassembly, the top of second contact shell fragment contacts with the bottom of constant head tank. The utility model discloses a first contact shell fragment and second contact shell fragment correspond the design of being connected with electrostatic protection contact point, constant head tank respectively, can be effectual with the static conduction on the circuit board to the casing, owing to through the conduction to static, improved the antistatic ability of circuit board.

Description

Circuit electrostatic protection device and electronic equipment using same

Technical Field

The utility model relates to an electronic equipment technical field, in particular to circuit electrostatic protection device and use this circuit electrostatic protection device's electronic equipment.

Background

With the development of electronic science and technology, the variety of electronic devices is increasing, and the application field of electronic devices is also wider and wider. In the use process of electronic equipment, static electricity is generated in the operation process of electronic components on a circuit board, and therefore, in order to improve the performance stability of the electronic equipment, the anti-static capability of the electronic equipment is more and more emphasized by electronic manufacturers.

In the use process of the existing electronic equipment, the mode of adding the anti-static circuit is adopted to realize the anti-static function of the circuit board, but the anti-static capability of the anti-static circuit is lower, so that the overall anti-static capability of the circuit board is poorer, and the quality of the electronic equipment and the use experience of a user are reduced.

SUMMERY OF THE UTILITY MODEL

Accordingly, an object of the embodiments of the present invention is to provide a circuit electrostatic protection device with high antistatic performance and an electronic device using the same.

A circuit electrostatic protection device is used for reducing the static generated by a circuit board and comprises a shell and an electrostatic protection component arranged in the shell, the circuit board is arranged between the shell and the electrostatic protection assembly, the electrostatic protection assembly comprises an assembly plate and an electrostatic protection plate embedded in the assembly plate, the static protection plate comprises protection parts which are distributed discretely and connecting plates which are arranged between the adjacent protection parts, the protection part comprises a fixing plate and a first contact elastic sheet and a second contact elastic sheet which are respectively arranged at two sides of the fixing plate, the circuit board is provided with an electrostatic protection contact point, the first contact spring sheet is contacted with the electrostatic protection contact point, the inner wall of one side of the shell, which faces the electrostatic protection component, is provided with a positioning groove, and the top end of the second contact elastic sheet is in contact with the bottom of the positioning groove.

According to the circuit electrostatic protection device, the first contact elastic sheet and the second contact elastic sheet respectively correspond to the electrostatic protection contact point and the positioning groove, static electricity on the circuit board can be effectively conducted to the shell, and the anti-static capacity of the circuit board is improved due to the conduction of the static electricity, so that the stability of the circuit is improved.

Furthermore, the number of the protection pieces is 3, an input circuit, an output circuit and a power supply circuit are arranged on the circuit board, and the input circuit, the output circuit and the power supply circuit are all provided with one electrostatic protection contact point.

Further, the shell comprises an outer shell and an inner shell arranged in the outer shell, the circuit board is assembled in the inner shell, and the assembly board covers the inner shell.

Furthermore, both ends of inner shell are equipped with spacing knot, spacing knot is used for the circuit board with the removal of assembly plate is spacing.

Furthermore, the middle part of the fixed plate is provided with an avoiding hole, and the avoiding hole is used for avoiding the extension of the first contact elastic sheet and the second contact elastic sheet.

Furthermore, the assembly plate adopts a semi-elliptical structure, and a plurality of assembly grooves are formed in the side wall of the assembly plate.

Furthermore, a plurality of radiating holes are formed in the assembling plate and used for radiating the circuit board.

Further, the casing adopts the metal material to make, the assembly panel adopts the plastics material to make, just the connecting plate with the fixed plate all imbeds in the assembly panel.

An electronic device comprises a circuit board, a data line electrically connected with the circuit board and the circuit electrostatic protection device, wherein the circuit board is arranged in the circuit electrostatic protection device.

Drawings

Fig. 1 is a schematic front exploded view of a circuit electrostatic protection device according to a first embodiment of the present invention;

FIG. 2 is a schematic diagram of an exploded backside structure of the electrostatic discharge protection device of the circuit of FIG. 1;

fig. 3 is a schematic structural view of an electrostatic protection plate according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a circuit electrostatic protection device according to a second embodiment of the present invention;

description of the symbols of the main elements

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "up," "down," and the like are for illustrative purposes only and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, a first embodiment of the present invention provides a circuit electrostatic discharge protection device 100, the static electricity reducing device is used for reducing static electricity generated by a circuit board 20 and comprises a shell 10 and a static electricity protecting assembly 30 arranged in the shell 10, the circuit board 20 is disposed between the housing 10 and the electrostatic discharge protection assembly 30, the housing 10 is made of metal material, the static electricity protection assembly 30 is used for conducting static electricity on the circuit board 20 to the housing 10, so as to improve the static electricity prevention capability of the circuit board 20, wherein the housing 10 includes an outer case and an inner case 11 provided in the outer case, the circuit board 20 is fitted in the inner case 11, the electrostatic protection component 30 is covered on the inner shell 11, specifically, the outer shell includes an upper shell 12 and a lower shell 13 connected to the upper shell 12, and the lower shell 13 is connected to the electrostatic protection component 30.

In this embodiment, the esd protection assembly 30 includes a mounting plate 31 and an esd protection plate 32 embedded in the mounting plate 31, the mounting plate 31 is covered on the inner housing 11, the esd protection plate 32 includes protection parts 322 discretely distributed and a connection plate 321 disposed between adjacent protection parts 322, each protection part 322 includes a fixing plate 323 and a first contact spring 324 and a second contact spring 325 respectively disposed at two sides of the fixing plate 323, the circuit board 20 is provided with an esd protection contact point 21, the first contact spring 324 is in contact with the esd protection contact point 21, a positioning groove 14 is disposed on an inner wall of the housing 10 facing the esd protection assembly 30, a top end of the second contact spring 325 is in contact with a bottom of the positioning groove 14, wherein the first contact spring 324 is used for conducting static electricity on the esd protection contact point 21, so that static electricity is conducted to the housing 10 contacting the second contact dome 325.

Preferably, the number of the protection components 322 may be multiple, in this embodiment, the number of the protection components 322 is 3, the circuit board 20 is provided with multiple circuits, such as an input circuit, an output circuit, and a power supply circuit, and the input circuit, the output circuit, and the power supply circuit are all provided with one electrostatic protection contact point 21, so that the circuit electrostatic protection device 100 in this embodiment contacts the ground at multiple positions, and multiple contact points at multiple positions contact the housing 10, thereby meeting the requirement of electromagnetic compatibility on the circuit board 20, and improving the ESD (electro-magnetic compatibility) resistance of the circuit.

Further, in this embodiment, the middle part of fixed plate 323 is equipped with dodges the hole, it is used for to dodge the hole first contact shell fragment 324 with the extension of second contact shell fragment 325 is dodged, assembly plate 31 adopts half oval structure, just be equipped with a plurality of assembly slots 33 on assembly plate 31's the lateral wall, through assembly slot 33's design, the effectual convenience assembly plate 31 with assembly between the inner shell 11 has improved assembly plate 31 with the stability of structure between the casing 10.

In addition, in this embodiment, a plurality of heat dissipation holes are formed in the assembly plate 31, the heat dissipation holes are used for dissipating heat of the circuit board 20, the assembly plate 31 is made of a plastic material, the connection plate 321 and the fixing plate 323 are embedded in the assembly plate 31, in this embodiment, the static protection plate 32 of the three-body connection spring structure is embedded into plastic through injection molding, and contacts the housing 10 and the circuit board 20 through the front surface and the back surface, so as to achieve the front-back surface contact positioning effect, preferably, the surfaces of the first contact elastic sheet 324 and the second contact elastic sheet 325 are plated with gold, so that the sweat is prevented from immersing into the oxidation generated on the elastic sheets, and the conductivity of the first contact elastic sheet 324 and the second contact elastic sheet 325 is good.

In this embodiment, the first contact elastic sheet 324 and the second contact elastic sheet 325 are respectively connected to the esd protection contact 21 and the positioning groove 14, so that static electricity on the circuit board 20 can be effectively conducted to the housing 10, and the static electricity prevention capability of the circuit board 20 is improved by conducting the static electricity, thereby improving the stability of the circuit.

Please refer to fig. 4, which is a schematic structural diagram of a circuit electrostatic protection device 100a according to a second embodiment of the present invention, the second embodiment is substantially the same as the first embodiment, and the difference is that in this embodiment, two ends of the inner housing 11 are provided with limit fasteners 40, and the limit fasteners 40 respectively fasten two ends of the circuit board 20 and the assembly plate 31, so as to achieve a movement limiting effect on the circuit board 20 and the assembly plate 31 in the inner housing 11, thereby improving the structural stability between the circuit board 20, the electrostatic protection assembly 30, and the inner housing 11.

The embodiment further provides an electronic device, which includes a circuit board 20, a data line electrically connected to the circuit board 20, and the circuit electrostatic protection device 100 or the circuit electrostatic protection device 100a, where the circuit board 20 is disposed in the circuit electrostatic protection device 100 or the circuit electrostatic protection device 100a, and the data line is used for data transmission of the circuit board 20, and the electronic device can effectively improve the electrostatic protection effect of the circuit board 20, and improve the quality of the electronic device. The electronic device can be an earphone, a mobile phone, a tablet or a wearable device and the like.

The above-described embodiments describe the technical principles of the present invention, and these descriptions are only for the purpose of explaining the principles of the present invention, and should not be interpreted as limiting the scope of the present invention in any way. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims (9)

1. The utility model provides a circuit electrostatic protection device for reduce the static that the circuit board produced, its characterized in that: including the casing with locate electrostatic protection subassembly in the casing, the circuit board is located the casing with between the electrostatic protection subassembly, the electrostatic protection subassembly includes the assembly plate and the embedding is located electrostatic protection board in the assembly plate, the electrostatic protection board includes discrete distribution's protection piece and locates adjacently connecting plate between the protection piece, the protection piece includes the fixed plate and locates respectively the first contact shell fragment and the second contact shell fragment of fixed plate both sides, be equipped with the electrostatic protection contact point on the circuit board, first contact shell fragment with the electrostatic protection contact point contacts, the casing orientation one side inner wall of electrostatic protection subassembly is equipped with the constant head tank, the top of second contact shell fragment with the bottom of constant head tank contacts.

2. The electrostatic discharge protection device for circuit as claimed in claim 1, wherein: the quantity of guard piece is 3, be equipped with input circuit, output circuit and power supply circuit on the circuit board, all be equipped with one on input circuit, output circuit and the power supply circuit the electrostatic protection contact point.

3. The electrostatic discharge protection device for circuit as claimed in claim 1, wherein: the shell comprises an outer shell and an inner shell arranged in the outer shell, the circuit board is assembled in the inner shell, and the assembly board is covered on the inner shell.

4. The electrostatic discharge protection device for circuit as claimed in claim 3, wherein: the both ends of inner shell are equipped with limit buckle, limit buckle is used for the circuit board with the removal of assembly plate is spacing.

5. The electrostatic discharge protection device for circuit as claimed in claim 1, wherein: the middle part of fixed plate is equipped with dodges the hole, dodge the hole and be used for the extension of first contact shell fragment with the second contact shell fragment dodges.

6. The electrostatic discharge protection device for circuit as claimed in claim 1, wherein: the assembly plate adopts a semi-elliptical structure, and a plurality of assembly grooves are formed in the side wall of the assembly plate.

7. The electrostatic discharge protection device for circuit as claimed in claim 1, wherein: the assembly plate is provided with a plurality of radiating holes, and the radiating holes are used for radiating the circuit board.

8. The electrostatic discharge protection device for circuit as claimed in claim 1, wherein: the casing adopts the metal material to make, the assembly panel adopts the plastics material to make, just the connecting plate with the fixed plate all imbeds in the assembly panel.

9. An electronic device, characterized in that: the circuit electrostatic protection device comprises a circuit board, a data line and the circuit electrostatic protection device, wherein the data line is electrically connected with the circuit board, and the circuit electrostatic protection device is as claimed in any one of claims 1 to 8.

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