KR101745574B1 - Plug connector using ceramic and the manufacturing method thereof - Google Patents

Plug connector using ceramic and the manufacturing method thereof Download PDF

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Publication number
KR101745574B1
KR101745574B1 KR1020160004276A KR20160004276A KR101745574B1 KR 101745574 B1 KR101745574 B1 KR 101745574B1 KR 1020160004276 A KR1020160004276 A KR 1020160004276A KR 20160004276 A KR20160004276 A KR 20160004276A KR 101745574 B1 KR101745574 B1 KR 101745574B1
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KR
South Korea
Prior art keywords
ceramic
plug shell
terminal pins
lower terminal
metal
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KR1020160004276A
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Korean (ko)
Inventor
최재혁
강우정
임성규
이충석
백승석
Original Assignee
주식회사 에스알비
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Priority to KR1020160004276A priority Critical patent/KR101745574B1/en
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Publication of KR101745574B1 publication Critical patent/KR101745574B1/en

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    • 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
    • H01R13/46—Bases; Cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/714—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit with contacts abutting directly the printed circuit; Button contacts therefore provided on the printed circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/60—Contacts spaced along planar side wall transverse to longitudinal axis of engagement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2107/00—Four or more poles

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

A plug connector with improved structure is disclosed.
According to an aspect of the present invention, a plug connector includes a plurality of upper terminal pins, a plurality of lower terminal pins, a fixing portion, a metal latch portion, a ceramic plug shell, and a holder, and an inner circumferential surface of the ceramic plug shell is metal coated. The plurality of upper terminal pins are provided at one end with the contact portions protruding downward, and are electrically connected when the mating connector is inserted. The plurality of lower terminal pins are located below the plurality of upper terminal pins and have a contact portion protruded upward, and are electrically connected when the mating connector is inserted. The fixing part fixes the upper terminal pin and the lower terminal pin. The metal latch portion is disposed in front of the upper terminal pin and the lower terminal pin so that the fastening state is maintained when the mating connector is inserted. The ceramic plug shell is formed into a hollow cylindrical shape and is coupled in the form of wrapping the upper and lower terminal pins, the fixing portion, and the latch portion. The holder is coupled to the rear of the ceramic plug shell and has through holes corresponding to the upper and lower terminal pins to hold the upper and lower terminal pins.

Figure R1020160004276

Description

Technical Field [0001] The present invention relates to a plug connector using ceramic, and a manufacturing method thereof.

The present invention relates to a plug connector. And more particularly to a plug connector fastened to a socket connector mounted on a printed circuit board in a portable electronic device.

The connector device is used for electrically connecting a circuit board, a circuit board, or a circuit board with an electronic component using FPCB or the like.

2. Description of the Related Art In recent years, a connector device has been widely applied to a circuit board such as a portable terminal, and thinning has been required to meet the trend of miniaturization of electronic devices. In addition, as the density of electronic elements mounted on the circuit board increases, the number of contacts provided in the connector device increases, and the arrangement pitch between the contacts is also designed to be very narrow.

A plurality of terminal contacts in one-to-one contact with the socket contacts are connected to plugs (not shown) provided in a plug insulator, .

The socket contacts and terminal pins are connected to the socket-side and plug-side cables, respectively, or are mounted on the circuit board. When the socket contact and the terminal pin are in contact with each other by plugging the socket, the socket side cable and the plug side cable or circuits of the circuit boards are electrically connected. Thus, data communication with an external device or power supply is performed.

As an example of a conventional plug connector, a micro USB USB plug connector is shown in Figs. The micro USB USB plug connector shown in Figs. 1 and 2 has five terminal pins 30 disposed between the insulators 10 made of plastic and insulated by the insulator 10. The metal shell 20 protects the insulator 10.

However, since the conventional plug connector and the corresponding socket connector shell are made of a metal material, there is a problem that the plug connector is damaged by physical contact during the repeated insertion of the plug connector into the socket connector. In addition, there is a disadvantage in that the structure is complicated and the manufacturing cost is high.

Korean Patent Laid-Open Publication No. 10-2013-0127960 (Feb.

An object of the present invention is to provide a plug connector with improved structure.

Another object of the present invention is to provide a method of manufacturing a plug connector that is simple in process and low in manufacturing cost.

According to an aspect of the present invention, a plug connector includes a plurality of upper terminal pins, a plurality of lower terminal pins, a fixing portion, a metal latch portion, a ceramic plug shell, and a holder, and an inner circumferential surface of the ceramic plug shell is metal coated. The plurality of upper terminal pins are provided at one end with the contact portions protruding downward, and are electrically connected when the mating connector is inserted. The plurality of lower terminal pins are located below the plurality of upper terminal pins and have a contact portion protruded upward, and are electrically connected when the mating connector is inserted. The fixing part fixes the upper terminal pin and the lower terminal pin. The metal latch portion is disposed in front of the upper terminal pin and the lower terminal pin so that the fastening state is maintained when the mating connector is inserted. The ceramic plug shell is formed into a hollow cylindrical shape and is coupled in the form of wrapping the upper and lower terminal pins, the fixing portion, and the latch portion. The holder is coupled to the rear of the ceramic plug shell and has through holes corresponding to the upper and lower terminal pins to hold the upper and lower terminal pins.

According to another aspect of the present invention, the metal latch portion is formed in the shape of a cylinder, has an upper and lower spring which is protruded toward the center of the cylinder and contacts the ground portion of the mating connector when the mating connector is inserted, And a pair of left and right latches, which extend along the inserting direction of the mating connector and protrude from the center of the mating cylinder to maintain the fastened state when the mating connector is inserted.

According to another aspect, the fixture may be comprised of an inner ceramic plate in the middle and an outer ceramic plate in each of the upper and lower portions of the inner ceramic plate such that the upper terminal pin and the lower terminal pin are fixed between the inner ceramic plate and the outer ceramic plate.

According to another aspect, the surface of the outer ceramic plate may be coated with a metal coating.

According to yet another aspect, a method of manufacturing a plug connector using ceramics includes the steps of fabricating a plug shell to produce a hollow cylindrical plug shell by sintering ceramics, forming a metal film on the inner and outer surfaces of the plug shell by coating the plug shell with metal A metal film forming step, and a metal film removing step of removing the metal film on the plug shell outer surface by barreling the plug shell.

According to another aspect, a method of manufacturing a plug connector using a ceramic includes an insulating coating step of coating an insulating material on inner and outer surfaces of a plug shell between a metal film forming step and a metal film removing step, And removing an insulating material removing part of the coated insulating material.

According to the present invention, since the plug shell forming the outer shape of the plug connector is made of ceramic and the inner circumferential face of the ceramic plug shell is coated with metal, the plug connector has a simple structure and improved durability.

Further, since the plug shell is made of ceramic, the plug connector can have various colors.

Further, the lubricating property of the ceramic facilitates coupling of the plug connector to the socket connector.

Further, the plug connector according to the present invention does not cause a problem such as failure even if it is used for a long time.

1 is a perspective view for explaining a use state of the plug connector.
2 is a perspective view showing a configuration of a plug connector according to the prior art.
3 is a perspective view of a plug connector according to an embodiment of the present invention.
4 is a sectional view of the fixing portion according to AA of FIG.
Figure 5 shows the interior of the ceramic plug shell shown in Figure 3;
6 is a cross-sectional view of a ceramic plug shell according to another embodiment of the present invention.
7 is a flowchart of a method of manufacturing a plug connector using a ceramic according to an embodiment of the present invention.
8 is a flowchart of a method of manufacturing a plug connector using a ceramic according to another embodiment of the present invention.

The foregoing and further aspects will become apparent through the following examples. In the present specification, corresponding elements in each figure are referred to by the same numerals. In addition, the shape and size of the components can be exaggerated. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to various embodiments of the present invention.

FIG. 3 is a perspective view of a plug connector according to an embodiment of the present invention, FIG. 4 is a cross-sectional view of the fixing portion according to AA of FIG. 3, and FIG. 5 is an interior view of the ceramic plug shell shown in FIG.

3 to 5, a plug connector using ceramics includes a plurality of upper terminal pins 10, a plurality of lower terminal pins 20, a fixing portion 30, a metal latch portion 40, A shell 50, and a holder 60, and the inner circumferential surface of the ceramic plug shell 50 may be metal coated.

The plurality of upper terminal pins 10 have contact portions projected downward at one end thereof, and are electrically connected when the mating connector is inserted. The number of the upper terminal pins can be one half of the total number of pins of the plug connector. The contact portion may be formed in a semicircular shape. The contact portion of the upper terminal pin 10 can be brought into contact with a terminal provided on the upper surface of the substrate of the socket connector to transmit an electric signal. The upper terminal pin 10 may be manufactured by press molding.

The plurality of lower terminal pins 20 are located under the plurality of upper terminal pins 10 and have a contact portion protruded upward to be electrically connected when the mating connector is inserted. The number of the lower terminal pins 20 can be half of the total number of pins of the plug connector pins. The contact portion may be formed in a semicircular shape. The contact portions of the lower terminal pins 20 can be brought into contact with terminals provided on the bottom surface of the socket connector to transmit electrical signals. The lower terminal pin can be manufactured by press molding.

The fixing portion 30 fixes the upper terminal pin 10 and the lower terminal pin 20. The fixing unit 30 includes a central inner ceramic plate 31, an outer ceramic plate 32 disposed on each of the upper and lower portions of the inner ceramic plate 31, and a state in which the inner ceramic plate 31 and the outer ceramic plate 32 are coupled (Not shown). The upper terminal pin 10 and the lower terminal pin 20 may be fixed between the inner ceramic plate 31 and the outer ceramic plate 32.

The outer ceramic plate 32 is provided with an upper terminal pin (not shown) so that the upper terminal pin 10 and the lower terminal pin 20 fixed between the inner ceramic plate 31 and the outer ceramic plate 32 can be disposed at correct positions. 10 and the protruding portion 32a for guiding the position of the lower terminal pin 20 can be formed.

The inner ceramic plate 31 and the outer ceramic plate 32 are made of LTCC (Low Temperature Co-fired Ceramic) or HTCC (High Temperature Co-fired Ceramic) Fired ceramic). A metal film 34 may be formed on the surface of the outer ceramic plate 32. When the metal film 34 is formed on the surface of the outer ceramic plate, EMI can be shielded.

The latch 33 is made of metal and may be in the form of a C-clip.

The metal latch portion 40 is disposed in front of the upper terminal pin 10 and the lower terminal pin 20 so that the fastening state is maintained when the mating connector is inserted. The metal latch 40 is formed in a cylindrical shape and includes a vertical spring 41 protruding toward the center of the cylinder to contact the ground of the mating connector when the mating connector is inserted, And a pair of right and left latches 42 extending along the inserting direction and protruding from the center of the cylinder so as to maintain the fastened state when the mating connector is inserted.

The ceramic plug shell 50 is formed in a hollow cylindrical shape and is coupled to enclose the upper and lower terminal pins 10 and 20, the fixing portion 30, and the latch portion 40. The ceramic plug shell 50 may have an elliptical cross-section. The inner circumferential surface of the cylindrical plug shell 50 becomes a metal coating. Therefore, EMI can be shielded without a separate metal member for EMI (electromagnetic interference) shielding. Therefore, the configuration of the plug connector is simplified. A guide protrusion 54 for guiding the positions of the upper and lower terminal pins 10 and 20 may be formed on the inner circumferential surface of the cylindrical plug shell 50.

The holder 60 is coupled to the rear of the ceramic plug shell 50 and has through holes corresponding to the upper and lower terminal pins 10 and 20 to hold the upper and lower terminal pins 10 and 20. The holder 60 can be manufactured by injection molding of plastic.

In the plug connector using the ceramic formed as described above, since the plug shell forming the outer appearance is made of ceramic, it can have various colors. Further, the lubrication of the ceramics facilitates coupling to the socket connector. Since the substrate is made of ceramics that can radiate heat well, no failure occurs even if the substrate is used for a long time. In addition, since the plug shell forming the outer shape of the plug connector is made of ceramic and the inner circumferential surface of the ceramic plug shell is metal coated, EMI can be shielded without a separate metal member for EMI shielding. Therefore, the configuration of the plug connector is simplified.

6 is a cross-sectional view of a ceramic plug shell according to another embodiment of the present invention.

Referring to FIG. 6, an insulating material 53 may be coated on the inner circumferential surface of the metal-coated ceramic plug shell 50. The inner circumferential surface of the ceramic plug shell 50 is coated with a metal for EMI shielding, and the upper and lower terminal pins may come into contact with the inner circumferential surface of the ceramic plug shell 50. This problem is prevented when the inner circumferential surface of the ceramic coated plug shell with the metal coating is coated with the insulating material 53.

7 is a flowchart of a method of manufacturing a plug connector using a ceramic according to an embodiment of the present invention. Referring to Fig. 7, a method of manufacturing a plug connector using a ceramic will be described.

First, the ceramic is sintered to produce a hollow cylindrical plug shell 50 (S110). The ceramic plug shell 50 may have an elliptical cross-section. The ceramic plug shell 50 can be made of a color using a pigment.

Next, a metal film 52 is formed on the inner and outer surfaces of the plug shell 50 by coating a metal on the ceramic plug shell 50 (S120). A metal film may be formed on the inner and outer surfaces of the plug shell, or may be plated to form a metal film.

Next, the ceramic plug shell 50 is barrel-processed to remove the metal film on the outer surface of the ceramic plug shell 50 (S130).

When manufacturing the plug connector as described above, EMI can be shielded without a separate metal member for shielding the EMI. Therefore, the configuration of the plug connector is simplified.

8 is a flowchart of a method of manufacturing a plug connector using a ceramic according to another embodiment of the present invention.

Referring to FIG. 8, between the metal film forming step and the metal film removing step of the plug connector manufacturing method using ceramic, a step of coating insulating material on the inner and outer surfaces of the plug shell, A step of removing a part of the agent may be included.

For the EMI shielding, the upper and lower terminal pins may touch the inner circumferential surface of the ceramic coated plug shell, which may cause a short circuit. This problem is prevented if the inner surface of the ceramic coated plug shell is coated with an insulating material. And a part of the insulating material is removed to expose the metal coating portion to the outside, and this portion is brought into contact with the outer ceramic plate, thereby improving the electrical characteristics.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. There will be. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

10: upper terminal pin 20: lower terminal pin
30: Fixing portion 40: Metal latch portion
41: upper and lower spring 42: latch
50: ceramic plug shell 60: holder

Claims (6)

A plurality of upper terminal pins electrically connected to each other when the mating connector is inserted;
A plurality of lower terminal pins, which are located below the plurality of upper terminal pins and have a contact portion protruding upwardly at one end thereof and are electrically connected when the mating connector is inserted;
A fixing part fixing the upper terminal pin and the lower terminal pin; And the fixing portion comprises a central inner ceramic plate, an outer ceramic plate located on each of upper and lower portions of the inner ceramic plate, and a latch for holding the inner ceramic plate and the outer ceramic plate in a coupled state, And is fixed between the inner ceramic plate and the outer ceramic plate,
A metal latch portion disposed in front of the upper terminal pin and the lower terminal pin to maintain a fastened state when the mating connector is inserted;
A ceramic plug shell formed in a hollow cylindrical shape and coupled in the form of wrapping the upper and lower terminal pins, the fixing portion, and the latch portion; And
A holder coupled to a rear of the ceramic plug shell and having through holes corresponding to the upper and lower terminal pins to hold the upper and lower terminal pins;
Lt; / RTI >
Wherein an inner circumferential surface of the ceramic plug shell is made of a metal-coated ceramic.
The method according to claim 1,
The metal latch portion is formed in a cylindrical shape and has an upper and a lower spring that protrude toward the center of the cylinder and come into contact with the ground portion of the mating connector when the mating connector is inserted. And a pair of right and left latches provided on one side to have protrusions protruding toward the center of the cylinder so as to maintain the fastened state when the mating connector is inserted.
delete The method according to claim 1,
Wherein a surface of the outer ceramic plate is coated with a metal.
A plug shell forming step of sintering the ceramic to produce a hollow cylindrical plug shell;
Forming a metal film on inner and outer surfaces of the plug shell by coating a metal on the plug shell;
And a metal film removing step of removing the metal film on the outer surface of the plug shell by barreling the plug shell,
Between the metal film forming step and the metal film removing step,
A step 2 'of coating an insulating material on inner and outer surfaces of the plug shell;
A step 2 'of removing a part of the insulating material coated inside the plug shell;
The method of manufacturing a plug connector using a ceramic according to claim 1,


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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018221756A1 (en) * 2017-05-29 2018-12-06 주식회사 에스알비 Plug connector using ceramic and method for manufacturing same
KR20190101602A (en) * 2018-02-23 2019-09-02 한국단자공업 주식회사 Micro usb plug connector
KR20200099023A (en) 2019-02-13 2020-08-21 주식회사 에스알비 Receptacle connectors with improved high-speed data and high power transmission
KR20230114598A (en) 2022-01-25 2023-08-01 (주)이디에스솔루션 Metal Shellless Type Receptacle Connector

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3147998B2 (en) * 1991-06-12 2001-03-19 フィッシャー ウント ポーター ゲーエムベーハー Device for measuring the flow rate of a medium passing through a conduit
JP2009043723A (en) * 2007-08-10 2009-02-26 Hon Hai Precision Industry Co Ltd Socket connector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3147998B2 (en) * 1991-06-12 2001-03-19 フィッシャー ウント ポーター ゲーエムベーハー Device for measuring the flow rate of a medium passing through a conduit
JP2009043723A (en) * 2007-08-10 2009-02-26 Hon Hai Precision Industry Co Ltd Socket connector

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018221756A1 (en) * 2017-05-29 2018-12-06 주식회사 에스알비 Plug connector using ceramic and method for manufacturing same
KR20190101602A (en) * 2018-02-23 2019-09-02 한국단자공업 주식회사 Micro usb plug connector
KR102503752B1 (en) * 2018-02-23 2023-02-28 한국단자공업 주식회사 Micro usb plug connector
KR20200099023A (en) 2019-02-13 2020-08-21 주식회사 에스알비 Receptacle connectors with improved high-speed data and high power transmission
KR102246563B1 (en) * 2019-02-13 2021-05-03 주식회사 에스알비 Receptacle connectors with improved high-speed data and high power transmission
KR20230114598A (en) 2022-01-25 2023-08-01 (주)이디에스솔루션 Metal Shellless Type Receptacle Connector

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