KR20170053053A

KR20170053053A - Circuit protection contactor and mobile electronic device with the same

Info

Publication number: KR20170053053A
Application number: KR1020150155327A
Authority: KR
Inventors: 임병국; 최윤석; 황윤호; 최재우; 박규환
Original assignee: 주식회사 아모텍
Priority date: 2015-11-05
Filing date: 2015-11-05
Publication date: 2017-05-15

Abstract

There is provided an electric shock protection contactor and a portable electronic device having the contactor. A contactor for protection against electric shock according to an exemplary embodiment of the present invention includes: a clip-shaped conductor having an elastic force for electrically contacting a conductor of the electronic device; And an electric shock protection device which is connected in series to the clip-shaped electric conductor and which cuts off a leakage current of an external electric power source flowing from the ground of the circuit board of the electronic device. Here, the electric shock protection housing may include: a body having a plurality of sheet layers stacked; An electric shock protection unit including at least a pair of inner electrodes spaced apart from each other at a predetermined interval in the inside of the body and a gap formed between the pair of inner electrodes; And at least one capacitor layer electrically connected in parallel to the electric shock protection unit and passing a communication signal flowing from the electric conductor, wherein the electric shock protection housing has a housing part on the upper side, At least a part of the conductor of the clip-like conductor is inserted, and the receiving portion is formed into a shape having a stopper function for the clip-shaped conductor.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric shock protection contactor and a portable electronic device having the contactor,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric shock protection contactor and a portable electronic device having the same, and more particularly, to an electric shock protection contactor capable of protecting a user from a leakage current by a power source 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. Accordingly, a conductive gasket is used between the external housing and the internal circuit board of the portable electronic device to reduce the impact from the outside while simultaneously penetrating into the portable electronic device or reducing electromagnetic waves leaking from the portable electronic device.

In addition, the portable electronic device may have a plurality of antennas for each function in accordance with multifunctionality, and at least a part of them may be an internal antenna and disposed in an external housing of the portable electronic device. Therefore, a conductive contactor is used for electrical contact between the antenna disposed in the external housing and the internal circuit board of the portable electronic device.

In addition, portable electronic devices have recently been increasing in adoption of housings made of metal to improve esthetics and robustness.

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, It causes 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.

In addition, when the metal housing is used as an antenna, the conductive gasket or the conductive contactor is required to realize a high capacitance because the signal is attenuated when the capacitance is low, and the RF signal is not transmitted smoothly.

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.

On the other hand, in the case of integrating the element for protection against electric shock and the conductive gasket or the conductive contactor, in particular, in the case of integrating the clip-shaped conductor, the stopper function of the clip-shaped conductor must be additionally provided. It is inevitable to develop a contactor having a clip-shaped conductor as a stopper function and an element for protection against electric shock.

In addition, since the clip-shaped conductor has a curved outer shape, stable fixing is required, and measures for easily placing the conductor in a precise position at the time of manufacturing are required.

KR 2007-0109332A

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to provide an electric shock protection contactor capable of protecting a user or an internal circuit from a leakage current by an external power source, It is an object of the present invention to provide a portable electronic device.

Another object of the present invention is to provide an electric shock protection contactor and a portable electronic device having the electric shock protection contact which can improve manufacturing efficiency by easily coupling a clip-shaped conductor to an electric shock protection element.

It is still another object of the present invention to provide an electric shock protection contactor and a portable electronic device having the same that can improve the coupling property of a clip-shaped electric conductor to an electric shock protection device.

In order to solve the above-mentioned problems, the present invention provides a connector comprising: a clip-shaped conductor electrically contacting a conductor of an electronic device; And an electric shock protection device which is connected in series to the clip-shaped electric conductor and which cuts off a leakage current of an external electric power source that flows from the ground of the circuit board of the electronic device. Here, the electric shock protection housing may include: a body having a plurality of sheet layers stacked; An electric shock protection unit including at least a pair of inner electrodes spaced apart from each other at a predetermined interval in the inside of the body and a gap formed between the pair of inner electrodes; And at least one capacitor layer electrically connected in parallel to the electric shock protection unit and passing a communication signal flowing from the electric conductor, wherein the electric shock protection housing has a housing part on the upper side, At least a part of the conductor of the clip-like conductor is inserted, and the receiving portion is formed into a shape having a stopper function for the clip-shaped conductor.

According to a preferred embodiment of the present invention, the electric shock protection device can pass the static electricity without being insulated and broken during the introduction of the static electricity from the electric conductor.

Further, the electric shock protection device may have a breakdown voltage (Vbr) satisfying the following formula:

Vbr> Vin, Vcp> Vbr

Where Vin is the rated voltage of the external power supply of the electronic device,

Vcp is the total breakdown voltage of the capacitor layer.

Further, the receiving portion may be formed in any one of polygonal, circular, and elliptical shapes .

Further, the receiving portion may be formed so that the upper side thereof is wider than the bottom side thereof, and the inclined side surface may be formed on the side surface.

Further, the accommodating portion may be provided on one side of the bottom surface An insertion groove can be formed.

Also, the uppermost capacitor electrode of the capacitor layer may be exposed to the outside from the accommodating portion, and the clip-shaped conductor may be laminated on the uppermost capacitor electrode through the conductive adhesive layer.

The electric shock protection unit may further include a pair of intermediate electrodes electrically connected to both ends of each of the electric shock protection unit and the at least one capacitor layer.

Further, the pair of inner electrodes may be disposed on the same sheet layer.

The gap may be equal to or greater than the gap between the pair of inner electrodes, and the height may be equal to or greater than the thickness of 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.

Also, the discharge material layer may be formed of a non-conductive material or a semiconductor material including metal particles.

The clip-shaped conductor may have a curved shape and may be in contact with the conductor or the circuit board. 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.

On the other hand, the present invention relates to a human body contactable conductor; A circuit board; And an electric shock protection contactor whose one end is electrically connected to the circuit board and the other end is electrically connected in series with the electric conductor.

According to a preferred embodiment of the present invention, the conductor may include at least one of an antenna, a metal case, and a conductive ornamental for communication between the electronic device and an external device.

The contactor for protection against electric shock and the portable electronic device having the contactor according to the embodiment of the present invention may be provided with an electric shock protection element in a contactor connecting a conductor and a circuit board in a portable electronic device in which a conductor such as a metal case is exposed to the outside , Damage to the user such as electric shock through the conductor, or breakage of the internal circuit can be prevented.

In addition, since the present invention includes an electric shock protection device and a contactor integrally, it is not necessary to provide a separate device for implementing the function and an additional space of the device, thereby making it possible to miniaturize the portable electronic device.

Further, according to the present invention, since the shape of the accommodating portion provided on the upper side of the electric shock protection element is modified in accordance with the clip-shaped conductor, a separate stopper for the clip-shaped conductor can be omitted, At the same time, the manufacturing cost can be reduced.

In addition, the present invention has an insertion groove for fixing a clip-shaped conductor to a receiving portion of the electric shock protection element, so that the clip-shaped conductor is stably coupled to the receiving portion of the electric shock protection element, .

Further, according to the present invention, by changing the accommodating portion of the electric shock protection element according to the shape of the clip-shaped electric conductor, the clip-shaped electric conductor can be easily coupled to the electric shock protection element, thereby improving the manufacturing efficiency.

1 is a sectional view of an example in which an electric shock protection contactor according to an embodiment of the present invention is applied to a portable electronic device,
FIG. 2 is a schematic equivalent circuit diagram for explaining an operation for leakage current when a contactor for protection against electric shock according to an embodiment of the present invention is installed in a portable electronic device;
3 is a schematic equivalent circuit diagram for explaining an operation for electrostatic discharge (ESD) when the contactor for protection against electric shock according to the embodiment of the present invention is installed in a portable electronic device,
FIG. 4 is a schematic equivalent circuit diagram for explaining an operation for a communication signal when the contactor for protection against electric shock according to the embodiment of the present invention is installed in a portable electronic device,
5 is a graph showing the simulation result of the pass frequency band according to the capacitance,
Fig. 6 is an enlarged view of the pass frequency band in Fig. 5,
FIG. 7 is an external perspective view of an electric shock protection contactor according to an embodiment of the present invention, FIG.
FIG. 8 is an overall perspective view of the electric shock protection device of FIG. 7;
Fig. 9 is an exploded perspective view showing the lamination relationship of the plurality of sheet layers in Fig. 8,
10 is a longitudinal sectional view showing the contactor for protection against electric shock shown in Fig. 7,
11 is a longitudinal sectional view showing another example of the accommodating portion in the contactor for protection against electric shock according to the embodiment of the present invention,
Fig. 12 is a plan view showing various forms of the accommodating portion in the electric shock protection element of Fig. 7,
FIG. 13 is a view showing the shape of internal electrodes in the electric shock protection device of FIG. 8,
14 is a longitudinal sectional view showing another example of the electric shock protection element in the electric shock protection contactor according to the embodiment of the present invention,
FIG. 15 is a view showing the shape of internal electrodes in the electric shock protection device of FIG. 14, and
16 to 21 are longitudinal sectional views showing various forms of the electric shock protection element in the contactor for protection against electric shock according to the embodiment of the present invention,

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.

The contactor 100 for protecting an electric shock according to an embodiment of the present invention includes a conductive connector 110 and an electric shock protection element 120.

Such an electric shock protection contactor 100 is for electrically connecting between a conductor 12 such as an external metal case and a circuit board 14 in a portable electronic device, as shown in Fig.

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 shock protection contactor 100 is urged in response to a pressing force to engage the conductor 12 with the portable electronic device so that when the conductor 12 is released from the portable electronic device, Lt; / RTI >

Here, the conductor 12 may be provided to partially surround or partially surround the side portion of the portable electronic device, and may be an antenna for communication between the portable electronic device and the external device.

The conductive connection 110 may be in electrical contact with the conductor 12 of the portable electronic device and may have an elastic force. The conductive connection portion 110 may be a clip-shaped conductor having an elastic force as shown in FIG.

When the clip 210 is brought into contact with the conductor 12 like the clip-shaped conductor 210, the clip-shaped conductor 210 is bent so that the contact portion 211 is pressed by the circuit board 14, 212 are pressed toward the circuit board 14 and the conductors 12 are separated from the portable electronic device by the elastic force of the bent portions 212 in the original state, Can be restored to the upper side.

The electric shock protection device 120 may be electrically connected to the conductive connection part 110 in series and may be disposed under the conductive connection part 110, for example, but is not limited thereto. The electric shock protection element 120 may be a suppressor having a capacitor layer.

Here, the electric shock protection device 120 interrupts the leakage current of the external power source flowing from the ground of the circuit board 14, passes the static electricity without being destroyed by insulation when the static electricity flows from the electric conductor 12, Can have a breakdown voltage (Vbr) that meets the following equation to allow a communication signal coming from the conductor 12 to pass:

Vbr> Vin, Vcp> Vbr

Vcp is the total dielectric breakdown voltage of the capacitor layer. Here, the total breakdown voltage of the capacitor layer is set such that the capacitor layers 224a and 224b are made up of a plurality of layers and are electrically connected in parallel, so that each of the capacitors 226a and 226b formed by the capacitor electrodes 226a and 226b May be the same as the dielectric breakdown voltage of the capacitor.

At this time, the rated voltage may be a standard rated voltage for each country, for example, 240V, 110V, 220V, 120V and 100V.

As shown in FIGS. 2 to 4, the electric shock protection device 120 may have different functions depending on a leakage current due to an external power source, a static electricity flowing from the electric conductor 12, and a communication signal.

2, when the leakage current of the external power source flows into the conductor 12 through the circuit portion 14 'of the circuit board 14, for example, the ground, The generator 100 can be kept open since its breakdown voltage (or trigger voltage) Vbr is larger than the overvoltage due to the leakage current. That is, since the breakdown voltage (Vbr) of the electric shock protection element 120 is larger than the rated voltage of the external power source of the portable electronic device, the electric conductor 12, which can be bonded to the body, It is possible to prevent the leakage current from being transmitted.

At this time, the capacitor layer can block the DC component included in the leakage current, and since the leakage current has a relatively low frequency as compared with the wireless communication band, the capacitor layer can act as a large impedance to the frequency to block the leakage current.

As a result, the contactor 100 for protecting against electric shock can protect the user from electric shock by blocking the leakage current from external power supplied from the ground of the circuit part 14 '.

3, when the static electricity flows from the outside through the conductor 12, the electric shock protection contactor 100 functions as an electrostatic protection element such as a suppressor. That is, since the operation voltage of the suppressor for electrostatic discharge is smaller than the instantaneous voltage of the static electricity, the contactor 100 for electric shock protection can pass the static electricity by the instantaneous discharge. As a result, the electric contact protection contactor 100 can lower the electrical resistance when the static electricity flows from the conductor 12, so that the contactor 100 can pass the static electricity without being electrically broken down.

At this time, since the total breakdown voltage Vcp of the capacitor layer is larger than the breakdown voltage Vbr of the electric shock protection part, the static electricity can pass through the electric shock protection part without flowing into the capacitor layer.

Here, the circuit portion 14 'may have a separate protection element for bypassing the static electricity to the ground. As a result, the contactor 100 for protecting the electric shock protection can protect the internal circuit of the following stage by passing static electricity without being broken by insulation caused by the static electricity flowing from the conductor 12.

Further, as shown in FIG. 4, when a communication signal is input through the conductor 12, the protection contactor 100 functions as a capacitor. That is, the electric shock protection element 120 keeps the electric shock protection part in the open state to shut off the conductor 12 and the circuit part 14 ', but can pass the communication signal in which the capacitor layer inside is passed. In this way, the capacitor layer of the electric shock protection element 120 can provide the inflow path of the communication signal.

Here, the capacitance of the capacitor layer is preferably set so as to pass the communication signal of the main wireless communication band without attenuation. As shown in FIG. 5 and FIG. 6, according to the simulation result of the pass frequency band according to the capacitance, substantially no loss is transmitted in the mobile radio communication frequency band (700 MHz to 2.6 GHz) And exhibits a short-circuit phenomenon electrically.

However, as shown in FIG. 6, it can be seen that the capacitance of the capacitor layer is not influenced by the reception sensitivity at the time of the communication at a capacitance of about 30 pF or more. It is preferable to use a high capacitance of 30. Or more.

As a result, the shielding contactor 100 can pass a communication signal flowing from the conductor 12 through the capacitance of the capacitor layer without attenuation.

Hereinafter, an electric shock protection contactor according to an embodiment of the present invention will be described in detail with reference to FIGS. 7 to 13. FIG.

As shown in FIGS. 7 and 10, the contactor 200 for protecting an electric shock may include a clip-shaped conductor 210 and an electric shock protection element 220 as a conductive connection.

The clip-shaped conductor 210 may be integrally formed of an elastic conductive material. The clip-shaped conductor 210 includes a contact portion 211, a bent portion 212, and a terminal portion 213.

The contact portion 211 has a curved shape and can be in electrical contact with the conductor 12. The bent portion 212 extends from the contact portion 211 and may have an elastic force. The terminal portion 213 may include a terminal electrically connected to the electric shock protection element 220.

The contact portion 211, the bent portion 212, and the terminal portion 213 may be integrally formed of a conductive material having an elastic force.

The clip-shaped conductor 210 may be partly inserted into the receiving portion 220b provided on the upper side of the electric shock protection element 220 and may be inserted into the uppermost portion of the electric shock protection element 220 through the conductive adhesive layer 111 And may be stacked on the capacitor electrode 222.

8 and 9, the electric shock protection element 220 includes a body 220a, an electric shock protection portion 225, and a plurality of capacitor layers 224a and 224b. The electric shock protection unit 225 includes a pair of internal electrodes 225a and 225b and a gap 228. The capacitor layers 224a and 224b may include a plurality of capacitor electrodes 226a and 226b and 222, .

At this time, the body 220a includes a plurality of electrodes 225a, 225b, 226a, 226b, 222 provided on at least a part of one surface so as to constitute the electric shock protection device 220 and the capacitor layers 224a, The sheet layers 220a-1,220a-3 to 220b-11 are sequentially stacked, and a plurality of electrodes provided on one surface of the sheet layers 220a-1,220a-3 to 220b-11 are arranged so as to face each other, and then integrally formed through a pressing, firing or curing process.

Such a body 220a may be made of an insulator having a dielectric constant. For example, the insulator may be made of a ceramic material, a low temperature sintered ceramics (LTCC), a high temperature sintered ceramics (HTCC), and a magnetic material. At this time, the ceramic material of the metal-based and oxidative compounds, metal-based oxide compounds _{Er 2 O 3, Dy 2 O} 3, Ho 2 O 3, V 2 O 5, CoO, MoO 3, SnO 2, BaTiO 3, Nd 2 O 3 And may include at least one selected.

Here, the body 220a may have an external electrode 221 formed on its bottom surface, and a top capacitor electrode 222 may be formed on the top surface thereof. At this time, the external electrode 221 is electrically connected to the circuit board 14, and the uppermost capacitor electrode 222 is connected to the clip-shaped conductor 210 disposed on the upper side of the electric shock protection element 220 And can be electrically connected.

Each of the plurality of sheet layers 220a-1 to 220a-11 constituting the body 220a is electrically connected to the internal electrodes 225a and 225b and the capacitor layers 224a and 224b constituting the electric shock protection part 225 The capacitor electrodes 226a, 226b, and 222 may be formed. For example, the upper sheet layers 220a-1,220a-4 to 220a-7 are formed on the lower surface of the corresponding sheet layer of the internal electrode 225b and the capacitor electrodes 226a, 226b, and 222, The internal electrodes 225a and the capacitor electrodes 226a and 226b may be formed on the upper surface of the sheet layer 220a-3 and 220a-8 to 220a-11.

Here, the plurality of sheet layers 220a-1 to 220a-11 may be formed with through holes 223a 'and 223b' for forming the intermediate electrodes 223a and 223b. That is, the sheet layers 220a-1 to 220a-3 and 220a-5 to 220a-10 have through holes 223a 'and 223b' at positions corresponding to both of the internal electrodes 225a and 225b A through hole 223a 'is formed in the sheet layer 220a-4 at a position corresponding to the internal electrode 225a (left side in the drawing), and the sheet layer 220a- Hole 223b 'may be formed only at a position (right side in the drawing) corresponding to the recess 225b.

At this time, the sheet layer 220a-12 has a rectangular shape, and the accommodating portion 220b formed through the central portion of the sheet layer 220a-12 may be provided. At least a part of the clip-shaped conductor 210 may be inserted into the accommodating portion 220b.

The uppermost capacitor electrode 222 is formed on the upper surface of the sheet layer 220a-4 disposed on the uppermost side of the elementary body 220a and the external electrode 221 is disposed on the lowermost sheet 220a-11 As shown in Fig.

The uppermost capacitor electrode 222 of the capacitor layer 224a is formed to be exposed to the outside from the bottom of the accommodating portion 220b and the clip shaped conductor 210 is electrically connected to the uppermost And may be stacked on the capacitor electrode 222.

The receiving portion 220b may serve as a side stopper and may not have a separate side stopper in the clip-shaped conductor 210. The shape of the clip-shaped conductor 210 may be simplified The manufacturing cost can be reduced. In addition, since at least a part of the clip-shaped conductor 210 is inserted into the accommodating portion 220b, warping and bending can be prevented after coupling. Particularly, in the reflow process after SMD, .

Here, the upper portion of the receiving portion 220b may be wider than the bottom surface 220d, and the inclined surface 220c may be formed on the side surface. In other words, both sides or slopes of the receiving portion 220a may be inclined surfaces 220c, and the inclined surfaces 220c may be formed so that the width of the receiving portion 220b decreases toward the bottom surface 220d . At this time, the uppermost capacitor electrode 222 exposed to the outside may be disposed on the bottom surface 220d.

By providing the inclined surface 220c in the accommodating portion 220b as described above, when the clip-shaped conductor 210 is inserted into the accommodating portion 220b at the time of manufacturing the electric shock protection contactor 200, The clip-shaped conductor 210 and the shielding protection element 220 can be easily coupled with each other, thereby improving the assembling performance. Therefore, The efficiency can be improved.

11, an insertion groove 220c 'may be formed on one side of the bottom surface 220d' of the receiving portion 220b '. That is, the receiving portion 220b 'may have an insertion groove 220c' extending from at least one side of the bottom surface 220d 'to the inside of the body 220a. Therefore, the width of the bottom surface 220d 'formed with the insertion groove 220c' may be greater than the width of the receiving portion 220b '.

Here, the receiving portion 220b 'has a rectangular shape and the insertion groove 220c' is shown on the bottom surface 220d 'of the receiving portion 220b'. However, the present invention is not limited thereto , The receiving portion may have an inclined surface 220c as shown in FIG. 10, or the insertion groove 220c 'may be formed to be spaced apart from the middle portion of the receiving portion 220b', the bottom surface 220d ' have.

By forming the insertion groove 220c 'on the bottom surface 220d' of the receiving portion 220b 'as described above, the clip-shaped conductor 210 can be inserted into the receiving portion 220c' The terminal portion 213 of the clip-shaped conductor 210 can be inserted into and fixed to the insertion groove 220c 'when the clip 210 is inserted into the clip-shaped conductor 220b' It is possible to improve the quality of the product.

The contactor 200 may be provided with various receiving portions 220a of the electric shock protection element 220 in which the clip-shaped conductor 210 is inserted and laminated.

12, the electric shock protection device 320 may include receiving portions 320a-1 to 320a-4 in the form of a polygon, a circle, or an ellipse on the upper side of the body 320a-1 to 320a-4, Can be formed.

The receptacles 320a-1 to 320a-4 serve as stoppers for the clip-shaped conductor 210 and may be formed in a suitable shape according to the shape of the clip-shaped conductor 210. [

Here, the receiving portion is not limited to the shape shown and described in FIG. 12, and may be formed in any form as long as it accommodates the clip-shaped conductor 210 and provides a stopper function.

The shielding protection element 220 may be formed on the shielding protection part 225 and the capacitor layers 224a and 224b so that the shielding part 225 and the capacitor layers 224a and 224b are electrically connected in parallel. And may further include a pair of intermediate electrodes 223a and 223b to which both ends are electrically connected. The pair of intermediate electrodes 223a and 223b may be formed through the internal electrodes 225a and 225b and the capacitor electrodes 226a and 226b. The intermediate electrode 223a may be connected to the uppermost capacitor electrode 222 and the intermediate electrode 223b may be connected to the external electrode 221. [

The internal electrodes 225a and 225b are spaced apart from each other within the body 220a. Here, one internal electrode 225a is connected to the intermediate electrode 223a, and the other internal electrode 225b is connected to the intermediate electrode 223b.

The internal electrodes 225a and 225b and the intermediate electrodes 223a and 223b may include any one or more of Ag, Au, Pt, Pd, Ni and Cu. Sn component, and the like.

The inner electrode 225a and the inner electrode 225b may be formed in the same pattern or may have different shapes and patterns. But may be provided to have different patterns. That is, the internal electrodes 225a and 225b are not limited to a specific pattern when the internal electrodes 225a and 225b are disposed such that a part of the internal electrodes are overlapped with each other when the body 220a is constructed.

The intervals between the internal electrodes 225a and 225b and the areas facing each other or overlapping with each other may be configured to satisfy the breakdown voltage Vbr of the electric shock protection element 220, , And 225b may be 10 to 100 mu m.

The air gap 228 may be formed by, for example, a gap forming member 227. That is, as shown in FIG. 13, the gap forming member 227 may be inserted between the pair of internal electrodes 225a and 225b in the body 220a. That is, the gap forming member 227 is provided in the sheet layer 220a-2 in the electric shock protection portion 225, and the gap between the internal electrode 225a and the sheet electrode 220a-2 And can be exposed upward and downward.

At this time, the gap forming member 227 may include discharge material layers 227a, 227b, and 227c applied to the inner wall of the gap forming member 227 at a predetermined thickness along the height direction. Here, the discharge material constituting the discharge material layers 227a, 227b, and 227c has a low dielectric constant, no conductivity, and no short circuit when an overvoltage is applied.

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 internal electrodes 225a and 225b include an Ag component, the discharge material may include SiC-ZnO-based components. The SiC (Silicon Carbide) component has excellent thermal stability, excellent stability in an oxidizing atmosphere, constant conductivity and heat conductivity, and low dielectric constant. The ZnO component has excellent nonlinear resistance and discharge characteristics.

In addition, 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 a 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 insulating layer blocks the Ag path to provide a further higher insulating property to the discharge material and improves the resistance to static electricity, thereby solving the DC shorting phenomenon when the contact protection contactor 100 is mounted on the electronic part .

Although the present invention has been described with reference to the SiC-ZnO-based material as an example of the discharge material, the present invention is not limited thereto. The discharge material may include a semiconductor material or metal particles corresponding to the components of the internal electrodes 225a and 225b Nonconductive materials may be used

At this time, the discharge material layer applied to the inner wall of the gap forming member 227 includes a first portion 227a applied along the inner wall of the gap forming member 227 and a second portion 227b formed from the upper end of the first portion 227a A second portion 227b extending in contact with the electrode 225a in opposition and a third portion 227c extending from the lower end of the first portion 227a to be in contact with the internal electrode 225b .

As a result, the discharge material layers 227a, 227b and 227c are formed not only on the inner wall of the gap forming member 227 but also on the upper and lower ends of the gap forming member 227, The inner electrode 225a and the inner electrode 225b are formed to extend so as to extend the contact area with the inner electrode 225a and the inner electrode 225b, respectively.

This is because some of the components of the discharge material layers 227a, 227b, and 227c are vaporized by the electrostatic spark due to the overvoltage, thereby enhancing the resistance to static electricity even if some of the discharge material layers 227a, 227b, and 227c are damaged. So that the discharge material layers 227a, 227b, and 227c can perform their functions.

A gap 228 may be formed between the pair of inner electrodes 225a and 225b by the gap forming member 227. [ The static electricity introduced from the outside by the gap 228 can be discharged between the pair of internal electrodes 225a and 225b. At this time, the electrical resistance between the pair of inner electrodes 225a and 225b is lowered, and the voltage difference between both ends of the protection connector 200 can be reduced to a certain value or less. Therefore, the contactor 200 for an electric shock protection can pass static electricity without causing internal breakdown.

On the other hand, a plurality of void forming members 227 may be provided between the pair of inner electrodes 225a and 225b. As described above, when the number of the gap forming members 227 disposed between the pair of inner electrodes is increased, the discharge path of the static electricity is increased, so that resistance to static electricity can be increased.

The capacitor layers 224a and 224b may be at least one stacked capacitor layer for passing communication signals incoming from the conductors 12. The capacitor layers 224a and 224b may be electrically connected in parallel with the electric shock protection unit 225 through the intermediate electrodes 223a and 223b. For example, the upper and lower portions of the electric shock protection unit 225 Or both of the upper and lower sides of the capacitor electrodes 226a and 226b, and may have a plurality of capacitor electrodes 226a and 226b. Here, the capacitor electrode 226a may be connected to the intermediate electrode 223a, and the capacitor electrode 226b may be electrically connected to the intermediate electrode 223b.

These capacitor layers 224a and 224b are intended to provide additional capacitance of the electric shock protection element 220 to improve RF reception sensitivity.

The capacitor layers 224a and 224b are used to protect the internal circuit against static electricity. Unlike the prior art in which a separate component for increasing the RF reception sensitivity is used together with a suppressor, a varistor or a zener diode , An electric shock protection device can be used to protect against static electricity as well as to increase the RF reception sensitivity.

The gap between the capacitor protection layer 225 and the capacitor layers 224a and 224b may be greater than the gap between the internal electrodes 225a and 225b or between the capacitor electrodes 226a and 226b . That is, the capacitor layers 224a and 224b may be formed so that static electricity or leakage current flowing along the internal electrodes 225a and 225b does not leak to the adjacent capacitor electrodes 226a and 226b, It is desirable to secure a sufficient distance between the capacitor electrodes 226a and 226b and the internal electrodes 225a and 225b.

Here, the sheet layer on which the electric shock protection part 225 and the upper and lower capacitor layers 224a and 224b are formed may be made of the same material, but may be made of different materials.

Further, at least one sheet layer of the plurality of sheet layers 220a-4 to 220a-11 constituting the capacitor layers 224a and 224b uses the first ceramic material, and the remaining sheet layers use the second ceramic material Can be used.

At this time, the first ceramic material and the second ceramic material may be heterogeneous ceramic materials. Here, the meaning of 'heterogeneous' means that the physical properties are mutually consulted even if the chemical formulas are different from each other or the chemical formulas are the same.

Hereinafter, with reference to FIG. 14 to FIG. 21, an example in which an electric shock protection device is variously implemented in an electric shock protection contactor according to an embodiment of the present invention will be described in detail.

As shown in FIGS. 14 to 17, a gap 228 may be formed between the internal electrodes 225a and 225b without using an additional gap forming member for the electric shock protection element 320. FIG.

At this time, the gap 228 may be disposed between the pair of inner electrodes 225a and 225b as shown in FIG. For this purpose, the sheet layer 220a-2 may be provided with a through hole at a position corresponding to the gap 228. [

As shown in FIG. 16, a filler layer 227 'may be disposed in the through-holes formed in the sheet layer 220a-2. That is, a filler 227 'made of a discharge material filled inside can be formed between the pair of internal electrodes 225a and 225b.

17, the gap 228 may have a discharge material layer 227 "on its sidewall. The discharge material layer 227" may be formed of a through-hole formed in the sheet layer 220a-2 And can be applied to the inner wall with a predetermined thickness along the height direction.

As another example, as shown in FIGS. 18 to 21, the electric shock protection device 320 may include internal electrodes 225a 'and 225b' horizontally spaced apart from each other by a predetermined distance. That is, the electric shock protection element 220 may have a horizontal electrode formed on the same sheet layer.

At this time, a gap 229 may be formed between the pair of internal electrodes 225a 'and 225b'. The cavity 229 may be formed to have a height greater than the height of the internal electrodes 225a 'and 225b' and may be formed to have a width larger than the interval between the internal electrodes 225a 'and 225b'. As the volume of the gap 229 is enlarged in this manner, even if fine particles are generated from the internal electrodes 225a 'and 225b' during the discharge by the static electricity, the space between the internal electrodes 225a 'and 225b' It is possible to reduce the incidence of defects that may occur.

Here, the gap 229 is a space in which discharge is started by the pair of internal electrodes 225a 'and 225b' when static electricity flows, and the volume of the gap 229 is set so as to satisfy the immunity against static electricity desirable. For example, the volume of the gap 229 may be 1-15% of the total volume of the electric shock protection element 200.

19, internal electrodes 225a 'and 225b' are spaced apart from each other on the same sheet layer, and a gap 229 'formed between the internal electrodes 229' And may be configured in the form of a through hole.

That is, the through holes may be disposed between the pair of internal electrodes 225a 'and 225b' arranged in parallel to each other on the same sheet layer, and may be hollow so as to fill the air.

20, the electric shock protection element 220 may have a discharge material layer 229 "on the sidewall of the gap. Such a discharge material layer 229 " may be formed on the sheet layer 220a-2 And may be applied to the inner wall of the formed through hole with a predetermined thickness along the height direction.

21, a filling material 229 "'may be disposed in the through hole formed in the sheet layer 220a-2 of the electric shock protection device 220. That is, A filling material 229 "'made of a discharge material filled in the space between the electrodes 225a' and 225b 'may be formed.

14 to 21, the receiving portion 220b 'is shown and described as having the insertion groove 220c' in the same manner as in FIG. 11. However, the receiving portion 220b 'may be provided in various forms. For example, As shown in FIG. 10, the inclined surface 220c may be provided.

The contactor for protection against electric shock as described above can be disposed between the body-contactable conductor 12 and the circuit board 14 in a portable electronic device.

With such an arrangement, the portable electronic device can prevent damage to the user or breakage of the internal circuit through the conductor, improve the electrical characteristics, and suppress the occurrence of sparks.

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.

12: conductor 14: circuit board
14 ': Circuit part
100,200: Contactor for protection against electric shock
110: conductive connection part 210: clip-shaped conductor
220, 320: an electric shock protection element 220a, 320a:
221: outer electrode 222: uppermost capacitor electrode
223a, 223b: intermediate electrode 225: electric shock protection part
225a, 225b: internal electrodes 224a, 224b: capacitor layers
226a, 226b: capacitor electrode 228:

Claims

A clip-shaped conductor having an elastic force in electrical contact with a conductor of the electronic device; And
And an electric shock protection element which is connected in series to the clip-shaped conductor and which cuts off a leakage current of an external power source flowing from the ground of the circuit board of the electronic apparatus,
The electric shock protection housing,
A body formed by stacking a plurality of sheet layers;
An electric shock protection unit including at least a pair of inner electrodes spaced apart from each other at a predetermined interval in the inside of the body and a gap formed between the pair of inner electrodes; And
And at least one capacitor layer electrically connected in parallel with the electric shock protection unit, the at least one capacitor layer passing a communication signal input from the electric conductor,
Wherein the electric shock protection housing is provided with a housing portion on an upper side thereof, at least a part of the clip-shaped electric conductor is inserted into the housing portion, and the housing portion has a shape having a stopper function with respect to the clip-shaped electric conductor.

The method according to claim 1,
Wherein the electric shock protection device allows the static electricity to pass without being destroyed by insulation when the static electricity flows from the electric conductor.

The method according to claim 1,
Wherein the electric shock protection element has a breakdown voltage (Vbr) satisfying the following equation.
Vbr> Vin, Vcp> Vbr
Where Vin is the rated voltage of the external power supply of the electronic device,
Vcp is the total breakdown voltage of the capacitor layer

The method according to claim 1,
Wherein the accommodating portion is formed in one of a polygonal shape, a circular shape, and an elliptical shape.

The method according to claim 1,
Wherein the accommodating portion is formed so that an upper side thereof is wider than a bottom surface thereof and an inclined surface is formed on a side surface thereof.

The method according to claim 1,
Wherein the accommodating portion has an insertion groove formed on one side of a bottom surface thereof.

The method according to claim 1,
The uppermost capacitor electrode of the capacitor layer is exposed to the outside from the accommodating portion,
Wherein the clip-shaped conductor is laminated on the uppermost capacitor electrode through a conductive adhesive layer.

The method according to claim 1,
Wherein the electric shock protection unit further comprises a pair of intermediate electrodes to which the both ends of each of the electric shock protection unit and the at least one capacitor layer are electrically connected.

The method according to claim 1,
And the pair of inner electrodes are disposed on the same sheet layer.

10. The method of claim 9,
Wherein the gap is greater than or equal to the width of the pair of inner electrodes and the height of the gap is greater than or equal to the thickness of the pair of inner electrodes.

The method according to claim 1,
Wherein the gap comprises a layer of a discharge material applied on the inner wall at a predetermined thickness along a height direction.

12. The method of claim 11,
Wherein the discharge material layer is made of a nonconductive material or a semiconductor material including metal particles.

The method according to claim 1,
The clip-
A contact portion having a curved shape and contacting the conductor or the circuit board;
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.

Human contactable conductors;
A circuit board; And
And the electric contact protection contactor according to any one of claims 1 to 13, wherein one end is electrically connected to the circuit board and the other end is electrically connected to the electric conductor in series.

15. The method of claim 14,
Wherein the conductor comprises at least one of an antenna, a metal case, and a conductive ornament for communication between the electronic device and an external device.