JP4057894B2 - Electrical connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a type of electrical connector, and more particularly to a type of receptacle connector that is used for transmission of a type of high-speed data and that conforms to the transmission standard of IEEE 1394b.
[0002]
[Prior art]
The IEEE 1394 connector referred to by those skilled in the art is an electrical connector conforming to the high-speed serial bus standard established by the Institute of Electrical and Electronics Engineers (IEEE), and has a large capacity storage such as a hard disk or a compact disk. It can also be used as a device insertion port, and can also be applied to computer peripheral equipment such as printers and scanning devices, and consumer electronics such as digital televisions and video cameras. Then, connectors conforming to both standards appear in the order of IEEE 1394-1995 and IEEE 1394a, and the transmission speed and performance thereof can be improved to some extent. Recently, the IEEE 1394b standard for high speed and long distance has been exhibited, and the standard can be greatly improved with respect to the basic 1394 standard, and the conventional IEEE 1394-1995 and IEEE 1394a standards. Long distances such as UTP-5 (Unshielded Twist Paired), plastic fiber and glass fiber, which can be used as a complete transmission, has a transmission speed up to 800 Mbps, has a distance of 100 meters, and maintains a data transmission speed of at least 100 Mbps. Transmission can be supported. Due to the significant advantages of high speed or long distance transmission, IEEE 1394 tends to become a consistent interface for PC products, communication systems and home networks. For example, the anti-electromagnetic interference function is particularly important for an electrical connector for high-speed data transmission that conforms to the IEEE 1394b standard.
[0003]
For this purpose, the electrical connector is generally provided with both outer and outer shield frames for preventing electromagnetic interference, and the shield frame is grounded to enhance the electromagnetic interference prevention function and discharge static electricity. The effect to do can also be show | played. In addition, since the grounding member can be easily installed on the outer shield frame, the ground piece can be simply extended from the bottom of the outer shield frame to connect to the ground circuit on the circuit board. However, the inner shield frame is installed at the center of the electrical connector, and a part of the inner shield frame is inserted into the insulating body. It is difficult to install the grounding member. Thereafter, those skilled in the art provided a grounding piece that integrally extends from the inner shield frame, but since the inner shield frame does not have a portion that is directly exposed to the outside of the connector, the presence of the grounding piece is always It becomes difficult to punch-mold or bend the inner shield frame, and the connecting portion between the grounding piece and the inner shield frame is easily broken.
[0004]
Therefore, in order to connect and ground to the inner shield frame of the electrical connector, how to install the grounding member more conveniently and effectively is a big technical problem for those skilled in the art. it is conceivable that.
[0005]
[Problems to be solved by the invention]
It is an object of the present invention to provide an electrical connector mainly having a kind of grounding effect and an excellent anti-electromagnetic interference function. It is another object of the present invention to provide an electrical connector in which a ground member is installed on a kind of inner shield frame, and that the ground member is manufactured independently and easily formed.
[0006]
[Means for Solving the Problems]
The electrical connector according to the present invention is provided for insertion of an abutting electrical connector by being installed on a circuit board. The insulating body further includes an insulating body, a plurality of conductive terminals, an inner shield frame body, an outer shield frame body, a grounding member, and the like, and the insulating body has a base portion provided at a rear end portion of the electrical connector, and forward from the base portion. A pair of abutting plates extending in parallel to each other and formed in parallel are provided with a plurality of terminal receiving grooves on the contact plate, and the terminal receiving grooves extend rearward and penetrate the base. The plurality of conductive terminals are accommodated in the corresponding terminal receiving grooves, and each conductive terminal has a contact portion that contacts the contact electrical connector, a fixing portion that extends rearward from the corresponding contact portion, and the fixing A coupling portion connected to the corresponding electric circuit on the circuit board is provided by being connected to the portion and extending outside the insulating body. The inner shield frame is formed so as to cover the outer periphery of the contact plate of the insulating main body and surround the first housing space by the contact plate and both side walls of the inner shield frame. The outer shield frame covers the outer periphery of the base portion of the insulating main body and extends forward, and further, a second receiving space is formed between the inner and outer shield frames, and the first and second housings are provided. The space is used for incorporating a contact portion of the contact connector. The grounding member is assembled in an insulating body adjacent to the inner shield frame, and includes at least a pressure contact portion that is pressed onto the inner shield frame and a coupling portion that extends to the outside of the insulating body. It is grounded by connecting a ground circuit corresponding to the circuit board.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIGS. 1 to 3, in the present embodiment, the electrical connector of the present invention refers to a receptacle connector that is used to transmit data at a high speed and conforms to the transmission standard of IEEE 1394b. Yes. It includes an insulating body 1, a plurality of conductive terminals 5, an inner shield frame 2, an outer shield frame 3, a grounding member 6, and the like.
[0008]
The insulating main body 1 has a base portion 13 provided at the rear end portion of the electrical connector, and a pair of abutting plates 111 and 112 extending in front from the base portion 13 and arranged in parallel are formed. . A plurality of terminal receiving grooves 12 are provided on the lower surface of the first contact plate 111 positioned above and the upper surface of the second contact plate 112 positioned below, respectively, and the terminal receiving grooves 12 extend rearward. While passing through the base 13, a convex opening 134 is opened at the end thereof. A protrusion 113 projects from the center of the second contact plate 112 in the direction of the first contact plate 111. A plurality of grooves 135 are formed at a lower portion of the rear end portion of the base portion 13 in a direction standing upright with respect to the protrusion 113, and a rear end portion of the base portion 13 positioned above the groove 135 is also a corresponding groove. A plurality of grooves 139 at the rear of 135 are formed, and these grooves 135 and 139 are for accommodating corresponding portions of the conductive terminal 5. Further, slits 131 for accommodating the inner shield frame 2 are installed in the upright direction of the base 13 at positions near the outer shield frame 3 on both sides of the base 13. A lateral groove 132 that extends in the direction of the outer shield frame 3 and communicates with the slit 131 is formed at the center of the slit 131, and further penetrates downward through the communicating portion between the groove 132 and the slit 131. A slot 133 is formed, and an extended portion 1331 that is widened toward the bottom end is formed below the slot 133.
[0009]
As shown in FIG. 3, the conductive terminals 5 are formed in an upper row and a lower row, a contact portion 52 that contacts a contact electrical connector (not shown), and a first extending backward from the contact portion 52. By fixing the fixed portion 51, the second fixed portion 53 bent and extended backward from the first fixed portion 51, and extending from the lower side to the outside of the base portion 13 continuously from the second fixed portion 53, And a joint portion 54 connected to an electric circuit corresponding to the circuit board. In the present embodiment, the bonding portion 54 is welded to the circuit board by employing a surface mounting technology (SMT). The contact portion 52 is received in the terminal receiving groove 12, the first fixing portion 51 is engaged with the convex opening 134 at the end of the terminal receiving groove, and the second fixing portion 53 is located behind the base portion 13. It will be engaged, interfering with the groove | channels 135 and 139 formed in the edge part. Therefore, the conductive terminal 5 is fixed inside the insulating body 1.
[0010]
As shown in FIGS. 1 to 3, the inner shield frame 2 and the outer shield frame 3 are integrally punched from a metal plate material. The inner shield frame 2 covers the outer peripheries of the contact plates 111 and 112, both side walls 21 installed in an upright direction, and a top wall 22 and a bottom wall installed in a horizontal direction and integrally connected to both side walls. 23, a first accommodating space 4 is formed between the contact plates 111 and 112 and the side walls 21. The rear end portion of the side wall 21 is fitted into slits provided on both sides of the rear end portion of the base portion 13 of the insulating body 1, and the outer shield frame body 3 includes a shield frame body 3a and a shield rear cover 3b. The shield frame 3 a covers the outer periphery of the base portion 13 and extends forward, and forms a second accommodating space 7 between the shield frame 3 a and the inner shield frame 2. The shield frame 3a includes a top wall 33 and a bottom wall 34 that connect both side walls 32 installed in the upright direction and both side walls installed in the horizontal direction. The protruding ear-shaped grounding piece 31 is integrally extended below the rectangular hole 321 and connected to a corresponding grounding circuit on the circuit board. A recess 37 is formed in the central portion of the top wall 33. The rear shield cover 3b shields the rear end surface of the base 13, extends a rectangular frame plate 38 forward from both sides of the lower portion thereof, and engages with the intermediate portion of the plate 38 in the rectangular hole 321. A joining piece 381 is formed.
[0011]
A finger-like elastic piece 24 that is bent and extended forward from the rear and located in the second housing space 7 is provided at the center of both side walls 21 of the inner shield frame 2. Both side walls 32 are provided with both finger-like elastic pieces 35 at positions corresponding to the finger-like elastic pieces 24 of the inner shield frame 2 and are bent and extended from the front to the rear. Is positioned. When the abutting connector (not shown) is inserted, the elastic pieces 24 and 35 are pressed against the abutting portion of the abutting connector and can be positioned better. The engagement arm 36 provided above the rear portion of the side wall 32 is bent inward and engaged with both sides of the rear end portion of the base portion 13.
[0012]
As shown in FIGS. 4 and 5, each grounding member 6 is provided with a linear main body portion 63 installed in an upright direction, and an upper end portion of the main body portion 63 is bent to form a bent portion 66. The first fixing portion 62 extends in the horizontal direction from the bent portion 66, and a plurality of hooking portions 621 are formed on the side edge portion of the first fixing portion 62, thereby forming a side wall of the lateral groove 132 of the base portion 13. Engage with interference. The first fixing portion 62 can be pressed against the inner shield frame 2 by extending the finger-like pressure contact portion 61 in the opposite direction of the main body portion 63 to the front end portion on one side where the hook portion 621 is not installed. it can. A finger-like space 67 in which the pressure contact portion 61 can be elastically compressed is formed between the pressure contact portion 61, the first fixing portion 62, and the bent portion 66. The main body 63 is bent downward and extends to form a joint 65 connected to a ground circuit corresponding to the circuit board. In the present embodiment, the main body 63 is welded to the circuit board by surface mounting technology (SMT). The main body 63 is formed with second fixing portions 64 provided with protrusions on both sides at a position positioned at a fixed distance from the joint portion 65.
[0013]
After the grounding member 6 is incorporated into the corresponding positions on both sides of the base portion 13 from the rear side of the insulating main body 1, the main body portion 63 is accommodated in the longitudinal slot 133 of the base portion 13, and the first fixing portion 62 is a groove. 132, the pressure contact portion 61 is pressed onto the rear end portion of the side wall 21 of the inner shield frame 2 accommodated in the slit 131, and is pressed against the bent portion 66 by elastic pressing. The second fixing portion 64 is engaged while interfering with the extension portion 1331 of the longitudinal slot 133. Therefore, the grounding member 6 is fixedly assembled in the base 13 of the insulating main body 1 and is in close contact with the inner shield frame 2 to achieve a better grounding effect and a strong anti-electromagnetic interference function. In addition, since the grounding member 6 is formed by itself, it can be easily replaced even if it is damaged.
[0014]
The above embodiments are merely better embodiments of the present invention, and any modifications or changes in details that can be made based on the present invention by those who are familiar with the technology of the present invention are all patents of the present invention. It shall belong to the claims.
[Brief description of the drawings]
FIG. 1 is a perspective assembly view of an electrical connector of the present invention.
FIG. 2 is a front view of the electrical connector of the present invention.
FIG. 3 is a perspective view seen from the back when the electrical connector of the present invention has not been assembled with a cover after shielding.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a perspective view of a ground member of the electrical connector of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Insulation body 2 Inner shield frame 3 Outer shield frame 3a Shield frame 3b Shield rear cover 4 1st accommodation space 5 Conductive terminal 6 Grounding member 7 2nd accommodation space 12 Terminal accommodation groove 13 Base 21, 32 Side wall 22,33 Top wall 23, 34 Bottom wall 24, 35 Finger-shaped elastic piece 31 Grounding piece 36 Engaging arm 37 Recess 38 Rectangular frame-shaped plate 51 First fixing part 52 Abutting part 53 Second fixing part 54 Coupling part 61 Pressure contact part 62 first fixing part 63 main body part 64 second fixing part 65 coupling part 66 bending part 67 finger-like space 111 first contact plate 112 second contact plate 113 ridge 131 slit 132 groove 133 slot 134 openings 135, 139 Groove 321 Rectangular hole 381 Engagement piece 621 Hook part 1331 Expansion part

Claims (9)

An electrical connector installed on a circuit board for inserting a contact electrical connector,
A pair of first contact plates and second contact plates that have a base portion provided at the rear end portion of the electrical connector, extend forward from the base portion, and are installed in parallel with each other. A plurality of terminal receiving grooves are provided on the contact plate, the terminal receiving grooves extending rearward and penetrating the base, and
Correspondingly accommodated in the terminal accommodating groove, each abutting part abutting against the abutting connector, a fixing part extending rearward from the corresponding contact part, connected to the fixing part and outside the insulating body A plurality of conductive terminals including coupling portions connecting corresponding electrical circuits on the extension circuit board;
A first accommodation space is formed in the insulating body so as to cover the outer periphery of the contact plate, both side walls installed in an upright direction, and a top wall installed in a horizontal direction and integrally connected to both side walls. And an inner shield frame having a bottom wall ;
Covers the outer periphery of the base portion of the insulating main body and extends forward, and a second receiving space is formed between the inner shield frame and the first and second receiving spaces. An outer shield frame in which the contact portion of the connector is incorporated;
A grounding member assembled in an insulating body adjacent to the inner shield frame and grounded by connecting a corresponding grounding circuit of the circuit board ;
In electrical connectors including
In a position close to the outer shield frame on both sides of the base of the insulating main body, a slit is formed to accommodate both side walls of the inner shield frame in the vertical direction, and in the center of the slit toward the outer shield frame A lateral groove extending and communicating with the slit is formed, and a slot penetrating downward is formed in a communicating portion between the groove and the slit,
The grounding member extends horizontally from the bent portion formed by bending the upper end portion of the main body portion, the main body portion received in the slot of the insulating main body portion, and engages with the globe. A first fixing portion, a press-contact portion formed to extend from one side of the first fixing portion, and press-contacted to a side wall of the inner shield frame housed in the slit; A finger-like space that is elastically compressible between the bent portion, the first fixing portion, and the pressure contact portion, and a joint portion that extends to the outside and connects to a ground circuit corresponding to the circuit board. electrical connector, characterized in that it is formed.   2. The electrical connector according to claim 1, wherein the electrical connector is used for high-speed data transmission and conforms to a transmission protocol of IEEE 1394b. The lower surface of the first contact plate positioned above and the upper surface of the second contact plate positioned lower are provided with a plurality of terminal receiving grooves parallel to each other, and the end portions of the terminal receiving grooves are convex. Formed in a letter-like opening, the conductive terminal is formed in an upper row and a lower row corresponding to the plurality of terminal receiving grooves, and a fixing portion of the conductive terminal extends backward from the contact portion. 2. A second fixing portion bent and extended rearward from the first fixing portion and the first fixing portion, wherein the first fixing portion is locked to the convex opening at the end of the terminal receiving groove. Electrical connector as described.   The electrical connector according to claim 3, wherein a central portion of the second contact plate includes a protrusion protruding in the direction of the first contact plate. The base includes an upper row groove and a lower row groove formed upward in the upright direction, and the upper row groove is formed behind the lower row groove, and the grooves engage with each other while interfering with the second fixing portion of the conductive terminal. The electrical connector according to claim 3, wherein: Below the slot, an extension portion that gradually becomes wider as it approaches the bottom end direction is formed, and a main body portion of the grounding member is formed with a second fixing portion that is engaged by interference with the extension portion. The electrical connector according to claim 1, wherein: A plurality of hooking portions are formed on one side edge of the first fixing portion of the grounding member while interfering with a side wall of the groove of the base portion of the insulating main body, and the pressure contact portion is formed of the first fixing portion. Extending in the opposite direction from the front end of the side portion where the hook portion is not installed toward the main body portion , and the pressure contact portion abuts against the side wall of the inner shield frame and at the same time is elastically pressed against the bent portion. The electrical connector according to claim 1 .   The outer shield frame includes a shield frame that covers the outer periphery of the base, and a shield rear cover that covers the rear end surface of the base, and has a rectangular hole at a lower portion of the rear end of the shield frame. Item 1. The electrical connector according to Item 1. The lower portions on both sides of the rear shield cover have a rectangular frame plate extending in the direction of the shield frame, an engagement piece is provided in the middle of the plate, and the engagement piece is engaged with a rectangular hole on the shield frame. The electrical connector according to claim 8 , wherein the electrical connectors are combined.

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