KR101959452B1 - Electric shock protection contactor assembly and mobile electronic apparatus with the same - Google Patents
Electric shock protection contactor assembly and mobile electronic apparatus with the same Download PDFInfo
- Publication number
- KR101959452B1 KR101959452B1 KR1020150187686A KR20150187686A KR101959452B1 KR 101959452 B1 KR101959452 B1 KR 101959452B1 KR 1020150187686 A KR1020150187686 A KR 1020150187686A KR 20150187686 A KR20150187686 A KR 20150187686A KR 101959452 B1 KR101959452 B1 KR 101959452B1
- Authority
- KR
- South Korea
- Prior art keywords
- conductive
- electric shock
- shock protection
- circuit board
- electrode
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0009—Casings with provisions to reduce EMI leakage through the joining parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/22—Contacts for co-operating by abutting
- H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
- H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
- H01R13/2428—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using meander springs
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/002—Casings with localised screening
- H05K9/0022—Casings with localised screening of components mounted on printed circuit boards [PCB]
- H05K9/0024—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0064—Earth or grounding circuit
Abstract
There is provided an electric shock protection contactor combination and a portable electronic device having the same. According to an embodiment of the present invention, an electric shock protection contactor combined body includes a conductive case which is in contact with a human body; A circuit board having a mounting pad; And a circuit board mounted on the mounting pad, wherein the conductive case and a grounding portion of the circuit board are connected to each other through the circuit board, wherein a leak current of an external power source, which flows from the grounding portion of the circuit board, To prevent transmission of electric power to the contactor. According to this, it is possible to prevent damage to the user such as electric shock through the conductor or breakage of the internal circuit, shield the electromagnetic wave, and require no additional device for implementing the function and the additional space of the device, Can be suitable.
Description
The present invention relates to a contactor assembly for protecting an electric shock and a portable electronic device having the same, and more particularly, to a contactor assembly for protecting a user from a leakage current by a power source and shielding an electromagnetic wave, And a portable electronic device having the same.
[0003] In recent portable electronic devices, various component elements are densely arranged in the interior in accordance with miniaturization and multifunctionalization. In addition, portable electronic devices have recently been increasing in adoption of housings made of metal to improve esthetics and robustness.
In such a portable electronic device, harmful electromagnetic waves radiated from the internal electronic components are generated, and electromagnetic waves from other electronic devices can be introduced through an external housing such as a metal case. Such electromagnetic waves may interfere with each other and may be detrimental to the human body, and thus EMI (Electromagnetic Interference) standards must be met to shield them. In order to achieve this, a shield can for electromagnetic wave shielding is essentially used.
Such a shield can is installed on a circuit board to block electromagnetic waves generated from electronic components of a portable electronic device. Here, in order to electrically connect the shield can with the external case, a foam gasket is used on the contact surface between the shield can and the external case. These foam gaskets are thin and rough.
As a result, an electrical path can be formed between the housing and the internal circuit board by the conductive gasket or the conductive contactor. In particular, as the metal housing and the circuit board form a loop, The static electricity may flow into the internal circuit board through the conductive gasket or the conductive contactor, and the circuit such as the IC may be damaged.
On the other hand, such a portable electronic device typically uses a charger to charge the battery. Such a charger rectifies an external AC power source to a DC power source and then through a transformer to a low DC power source suitable for a portable electronic device. Here, in order to enhance the electrical insulation of the transformer, a Y-CAP composed of a capacitor is provided at both ends of the transformer.
However, when the Y-CAP does not have the normal characteristics, such as a non-genuine charger, the DC power may not be sufficiently blocked by the Y-CAP, and furthermore, a leakage current may be generated by the AC power source. Can propagate along the ground of the circuit.
Such a leakage current can be transmitted to a conductor that can be contacted with a human body as in an external case of a portable electronic device. As a result, the user can be displeased with a feeling of crushing and, in severe cases, There is a problem of causing an electric shock accident.
Therefore, it is necessary that a protective element for protecting the user from such luminescence current is provided in the conductive gasket or the conductive contactor connecting the metal housing and the circuit board.
Thus, there is a need for a contactor having various functions for protecting a user or a circuit in a portable electronic device as well as a simple electrical contact according to the use of a conductor such as a metal case.
However, in order to implement these various functions, additional component elements are required, and thus, an additional space is required on the circuit board of the portable electronic device, which adversely affects miniaturization.
Therefore, it is inevitable to develop a contactor assembly which satisfies the shielding of leakage current flowing from an external power source and the shielding of electromagnetic waves but does not require a separate mounting space.
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide an electric shock protection contact capable of shielding a user or an internal circuit from a leakage current by an external power source, And a portable electronic device having the same.
According to an aspect of the present invention, A circuit board having a shield can for shielding electromagnetic waves and a mounting pad electrically connected to the shield can on an upper surface; And a circuit board mounted on the mounting pad, wherein the conductive case and a grounding portion of the circuit board are connected to each other through the circuit board, wherein a leak current of an external power source, which flows from the grounding portion of the circuit board, The contactor being provided with an electric shock protection contact which shields the contactor from being transmitted to the contactor.
According to a preferred embodiment of the present invention, the shielding contactor may be coupled to the mounting pad via solder.
Further, the contact protection contact contact assembly may further include a conductive bracket coupled to the conductive case by fastening means and having an insertion groove into which the fastening means is inserted and fixed, wherein the circuit board has a through- Holes.
Also, the electric shock protection contactor may allow the static electricity to pass therethrough without being destroyed by insulation when the static electricity flows from the conductive case.
The contactor for protection against electric shock includes a conductive connection part electrically contacting the conductive case; And an electric shock protection device that is connected in series to the conductive connection portion and blocks a leakage current of the external electric power source.
Also, the electric shock protection housing may have a groove portion on the upper side, and the conductive connection portion may be at least partially inserted into the groove portion.
In addition, the electric shock protection device may have an external electrode on the bottom surface of the groove portion, and the conductive connection portion may be laminated on the external electrode through a conductive adhesive layer.
Further, the electric shock protection device may have a breakdown voltage (Vbr) satisfying the following formula:
Vbr> Vin
Where Vin is the rated voltage of the external power supply.
The conductive connection portion may be a conductive gasket, a silicone rubber pad, or a clip-shaped conductor having elasticity.
In addition, the conductive gasket may include at least one of a polymer body, a natural rubber, a sponge, a synthetic rubber, a heat-resistant silicone rubber, and a tube made of a conductive paste by thermocompression bonding.
The silicone rubber pad may further include: a body made of a silicone rubber; And a conductive wire vertically formed in the body.
The silicone rubber pad may further include: a body made of a silicone rubber; A plurality of conductive layers horizontally cross-deposited within the body; And a plurality of contact portions formed in a curved shape on the upper side of the body.
Further, the silicone rubber pad may include a body made of a non-conductive silicone rubber; A conductive part filled with a conductive silicone rubber and conductive particles in a plurality of through holes formed vertically through the inside of the body; And a plurality of contact portions formed on both sides of the conductive portion in a curved shape.
Further, the clip-shaped conductor includes a contact portion having a curved shape and contacting the contacted conductor; A bending portion extending from the contact portion and having an elastic force; And a terminal portion electrically connected to the electric shock protection element.
The electric shock protection housing may include: a body having a plurality of sheet layers stacked; And at least a pair of internal electrodes spaced apart from each other by a predetermined distance.
The electric shock protection device may further include a gap formed between the pair of inner electrodes.
The gap may include a layer of a discharge material applied to the inner wall at a predetermined thickness along the height direction.
Further, the pair of internal electrodes may be arranged on the same plane.
The electric shock protection device may further include at least two varistor material layers alternately stacked with a first varistor material layer and a second varistor material layer; A plurality of first internal electrodes spaced apart by a predetermined distance L on the first varistor material layer; And a plurality of second internal electrodes spaced apart from each other by a predetermined distance L on the second varistor material layer.
The breakdown voltage Vbr may be the sum of breakdown voltages formed between the first and second inner electrodes adjacent to each other.
The first internal electrode and the second internal electrode may be arranged so that at least a part of the first internal electrode and the second internal electrode do not overlap or overlap each other.
The spacing L of the first internal electrodes or the spacing L of the second internal electrodes may be greater than the shortest distance d between the first internal electrodes and the second internal electrodes.
On the other hand, the present invention can provide a portable electronic device having the above-described contactor combined body for protection against electric shock.
The contactor protection contactor combined body and the portable electronic device having the contactor protection contactor according to an embodiment of the present invention may be used in a portable electronic device in which a conductive case such as a metal case is exposed to the outside and a shield can is provided, It is possible to prevent damage to the user such as electric shock through the conductive case or breakage of the internal circuit and to shield the electromagnetic wave and to provide a separate element for implementing the function, There is no need for an additional space, which is suitable for miniaturization of a portable electronic device.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a contactor protection contact assembly according to an embodiment of the present invention,
Fig. 2 is a cross-sectional view of the conductive case and the conductive bracket separated from each other in Fig. 1,
Figs. 3 and 4 are cross-sectional views of an example of an electric shock protection contactor in the electric shock protection contactor assembly of Fig.
FIGS. 5 to 8 are cross-sectional views showing various forms of the electric shock protection element of the contactor for protection against electric shock in the contactor for protection against electric shock shown in FIG. 3 and FIG. 4,
9 to 12 are sectional views of another example of an electric shock protection contactor in the electric shock protection contactor assembly of FIG.
13 and 14 are cross-sectional views of still another example of an electric shock protection contactor in the electric shock protection contactor assembly of FIG. 1,
15 to 17 are sectional views showing various forms of the conductive connection portion of the contactor for protecting the electric shock in the contactor contact assembly of FIG.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.
1, the electric shock protection contactor combined body 10 according to an embodiment of the present invention includes a
Such an electric shock protection contactor assembly 10 is for connecting an external metal case to a circuit board in a portable electronic device.
Here, the portable electronic device may be in the form of a portable electronic device that is portable and portable. For example, the portable electronic device may be a portable terminal such as a smart phone, a cellular phone, and the like, and may be a smart watch, a digital camera, a DMB, an electronic book, a netbook, a tablet PC, Such electronic devices may comprise any suitable electronic components including antenna structures for communication with external devices. In addition, it may be a device using local area network communication such as Wi-Fi and Bluetooth.
The
The
The mounting
The shield can 15 is disposed on the
The
That is, the
Such an electric
The
Here, when the
9, when the conductive connection part is in contact with the
The electric
Meanwhile, the electric
At this time, the electric
Such an electric
Vbr> Vin
Where Vin is the rated voltage of the external power supply of the electronic device.
At this time, the rated voltage may be a standard rated voltage for each country, for example, 240V, 110V, 220V, 120V and 100V.
Since the
The contactor protecting body 10 for electric shock protection according to the embodiment of the present invention may further include a
The
At this time, the
The
1 and 2, the
Here, the
3 and 4, the
As shown in FIGS. 3 and 4, the
The
One side of the
The
In addition, as shown in FIG. 4, the electric
The
At this time, the electric
5, when the electric
The
Such a
The lower surface of the
The
The
The first
The interval between the
The
To this end, the discharge material may be made of a nonconductive material including at least one kind of metal particles, and may be made of a semiconductor material containing SiC or a silicon-based component.
For example, when the first
The ZnO component has excellent nonlinear resistance and discharge characteristics.
Both SiC and ZnO have conductivity when used separately, but when they are mixed and fired, ZnO is bonded to the surface of SiC particles to form an insulating layer having low conductivity.
In such an insulating layer, SiC completely reacts to form a SiC-ZnO reaction layer on the surface of the SiC particles. Accordingly, the insulation layer blocks the Ag path to provide a further higher insulation property to the discharge material and improves resistance to static electricity, thereby solving the DC short phenomenon when the
Herein, the discharge material includes SiC-ZnO-based material as an example of the discharge material, but the present invention is not limited thereto. The discharge material may include a component constituting the first
At this time, the discharge material layers 217a, 217b, and 217c applied to the inner wall of the gap forming member 217 include a first portion 217a coated along the inner wall of the gap forming member 217, A second portion 217b arranged to be in contact with the first
Accordingly, the discharge material layers 217a, 217b and 217c are formed not only on the inner wall of the gap forming member 217 but also on the upper and lower ends of the gap forming member 217, And the first
This is because some of the components of the discharge material layers 217a, 217b and 217c are vaporized by the electrostatic spark due to the overvoltage, thereby enhancing the resistance to static electricity even if a part of the discharge material layers 217a, 217b and 217c is damaged. So that the discharge material layers 217a, 217b, and 217c can perform their functions.
The
On the other hand, the plurality of void forming members 217 may be provided. As described above, when the number of the gap forming members 217 is increased, the discharge path of the static electricity is increased, so that resistance to static electricity can be increased.
As shown in FIG. 6, the
7, the electric
At this time, a gap 128 'may be formed between the pair of
As shown in FIG. 8, when the electric
The lower surface of the electric
At this time,
The varistor material layer may be composed of at least two layers alternately of a first
The
Here, the breakdown voltage Vbr of the
Each of the first
The first internal electrode or the second internal electrode may have a gap so that static electricity or leakage current does not leak to the adjacent positions of the
For example, the distance L between the first
As shown in FIGS. 9 to 12, the
The
The
The
According to another embodiment, as shown in FIGS. 10 to 12, the electric
The
With this structure, the
Here, the
13 and 14, the
The
The
For example, when the
15, the contact protector for electric shock protection is a case where the conductive connection portion is another type of
The
The
For example, when the
Therefore, the
16, the contact protector for electric shock protection includes a
The
The
For example, when the
The
17, the contact protector for electric shock protection includes a
The
The
At this time, when the pressure or heat is not externally applied to the conductive particles, the conductive particles are not separated from each other and are not energized. When pressure or heat is externally applied, the conductive particles may contact each other due to shrinkage of the conductive silicone rubber, .
Such a
For example, when the
The
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
10: Contact protection contact for electric shock protection 11: Conductive case
11a: fastening
11c: Insulator 12: Circuit board
12a: mounting
12c: Through hole 13: Bracket
13a: insertion groove 14: LCD module
15: Shield cans
100, 200, 300, 300 ', 300 ": Electric contact protection contactor
110:
120a: body 121: outer electrode
122:
125a, 125b, 125a ', 125b': internal electrode 127:
127a, 127b, 127c, 129: a
220:
220b, 220c: varistor material layer 221: outer electrode
222:
225a, 225b: internal electrodes
Claims (23)
A circuit board having a shield can for shielding electromagnetic waves and a mounting pad electrically connected to the shield can on an upper surface;
Wherein the circuit board is mounted on the mounting pad and the conductive case and the grounding portion of the circuit board are connected to each other through the circuit board so that a leakage current of an external power source, An electric shock protection contactor for blocking the electric signal from being transmitted; And
And a conductive bracket coupled to the conductive case by fastening means and having an insertion groove into which the fastening means is inserted,
Wherein the circuit board has a through hole through which the fastening means passes.
Wherein the contact protector for electric shock protection is coupled to the mounting pad through solder.
Wherein the contactor for protecting against electric shock passes through the static electricity without being destroyed by insulation when the static electricity flows from the conductive case.
A conductive connection portion electrically contacting the conductive case; And
And an electric shock protection element which is connected in series to the conductive connection portion and blocks the leakage current of the external electric power source.
The electric shock protection housing has a groove portion on the upper side,
Wherein the conductive connection portion is at least partially inserted into the groove portion.
The electric shock protection device may include a connection electrode on a bottom surface of the groove,
Wherein the conductive connection portion is laminated on the connection electrode through a conductive adhesive layer.
Wherein the electric shock protection element has a breakdown voltage (Vbr) satisfying the following equation.
Vbr> Vin,
Where Vin is the rated voltage of the external power source
Wherein the conductive connection portion is a conductive gasket, a silicone rubber pad, and a clip-shaped conductor having elasticity.
Wherein the conductive gasket comprises at least one of a polymer body, a natural rubber, a sponge, a synthetic rubber, a heat-resistant silicone rubber, and a tube made of a conductive paste by thermocompression bonding.
A body made of silicone rubber; And
And a conductive wire vertically formed in the body.
A body made of silicone rubber;
A plurality of conductive layers horizontally cross-deposited within the body; And
And a plurality of contact portions formed in a curved shape on the upper side of the body.
A body made of non-conductive silicone rubber;
A conductive part filled with a conductive silicone rubber and conductive particles in a plurality of through holes formed vertically through the inside of the body; And
And a plurality of contact portions formed on both sides of the conductive portion in a curved projection.
A contact portion having a curved shape and contacting the contacted conductor;
A bending portion extending from the contact portion and having an elastic force; And
And a terminal portion electrically connected to the electric shock protection element.
A body formed by stacking a plurality of sheet layers; And
And at least one pair of internal electrodes formed at predetermined intervals in the inside of the elementary body.
And the electric shock protection housing further comprises a gap formed between the pair of inner electrodes.
Wherein the gap comprises a layer of a discharge material applied to the inner wall at a predetermined thickness along a height direction.
Wherein the pair of inner electrodes are disposed on the same plane.
At least two varistor material layers alternately laminated with a first varistor material layer and a second varistor material layer;
A plurality of first internal electrodes spaced apart by a predetermined distance L on the first varistor material layer; And
And a plurality of second internal electrodes spaced apart from each other by a predetermined distance L on the second varistor material layer.
Wherein the breakdown voltage (Vbr) is a sum of a breakdown voltage formed between the first internal electrode and the second internal electrode closest to the first internal electrode and the second internal electrode, respectively.
Wherein the first inner electrode and the second inner electrode are disposed so that at least a part thereof does not overlap or overlap each other.
Wherein the spacing L between the first inner electrodes or the spacing L between the second inner electrodes is greater than the shortest distance d between the first inner electrodes and the second inner electrodes.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150187686A KR101959452B1 (en) | 2015-12-28 | 2015-12-28 | Electric shock protection contactor assembly and mobile electronic apparatus with the same |
CN201680059515.6A CN108141995B (en) | 2015-12-16 | 2016-12-14 | The connector integrated structure of electronic equipment and portable electronic device with it |
US16/063,036 US10499520B2 (en) | 2015-12-16 | 2016-12-14 | Electronic device contactor coupling structure and portable electronic device including same |
PCT/KR2016/014633 WO2017105074A1 (en) | 2015-12-16 | 2016-12-14 | Electronic device contactor coupling structure and portable electronic device including same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150187686A KR101959452B1 (en) | 2015-12-28 | 2015-12-28 | Electric shock protection contactor assembly and mobile electronic apparatus with the same |
Publications (2)
Publication Number | Publication Date |
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KR20170077618A KR20170077618A (en) | 2017-07-06 |
KR101959452B1 true KR101959452B1 (en) | 2019-03-18 |
Family
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KR1020150187686A KR101959452B1 (en) | 2015-12-16 | 2015-12-28 | Electric shock protection contactor assembly and mobile electronic apparatus with the same |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102442279B1 (en) * | 2017-07-12 | 2022-09-15 | 주식회사 아모텍 | Functional contactor |
KR20190020971A (en) * | 2017-08-22 | 2019-03-05 | 삼성전자주식회사 | Electronic device with conductive exterior member, and leakage current detection method related thereto |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100809249B1 (en) | 2006-05-10 | 2008-02-29 | 삼성전기주식회사 | Built-in Antenna Assembly of Wireless Communication Terminals |
KR101326653B1 (en) * | 2007-01-17 | 2013-11-08 | 엘지전자 주식회사 | Portable terminal |
KR20110051086A (en) * | 2009-11-09 | 2011-05-17 | 삼성전기주식회사 | Antenna device having electrostatic discharge protection function |
KR20140132880A (en) * | 2013-05-08 | 2014-11-19 | 삼성전자주식회사 | Printed board assembly and manufacturing method thereof |
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