KR102091944B1 - Electrical connection system for shielded wire cable - Google Patents

Abstract

Electrical connection system configured to terminate electrical conductors (102, 104) and transmit digital electrical signals having a data rate of at least 5 gigabits per second (Gb / s). The system includes first parallel mirror-symmetric terminal pairs 160, 162 having planar connections 164, 166, and contact points 138 configured to contact the cantilevered portions 136, 140 and the first terminals 160, 162. , 142) a second parallel mirror-symmetric terminal pair (132, 134). The cantilevered portions 136 and 140 are generally perpendicular to the planar connecting portions 164 and 166. Terminals 132, 134, 160, and 162 cooperate to provide a constant characteristic impedance. The connection system further comprises electromagnetic shields 172, 174 surrounding the terminals 132, 134, 160, 162 in the longitudinal direction. The connection system is suitable for termination wire cables 100 that transmit digital signals using data transmission protocols such as Universal Serial Bus (USB) 3.0 and High-Definition Multimedia Interface (HDMI) 1.4.

Description

ELECTRICAL CONNECTION SYSTEM FOR SHIELDED WIRE CABLE}

This application claims the benefit of patent application number 15 / 804,444 filed on November 3, 2017, the entire contents of which are incorporated herein by reference.

The present invention relates generally to electrical connection systems, and more specifically to differential digital electrical signals having a data rate of at least 5 gigabit per second (Gb / s) requiring additional frequency components up to 7.5 gigahertz (GHz). It relates to an electrical connection system designed to connect a shielded wire cable that can be transmitted by an enemy.

The increase in digital data processor speed has resulted in an increase in data transfer speed. Transmission media used to connect electronic components to digital data processors should be configured to efficiently transmit high-speed digital signals between various components. Wired media such as fiber optic cables, coaxial cables or twisted pair cables may be suitable for applications where the connected components are in a fixed position and are relatively close together, eg separated by less than 100 meters. It might be. Fiber optic cables provide a transmission medium capable of supporting data rates up to nearly 100 Gb / s and are virtually immune to electromagnetic interference. Coaxial cables typically support data rates up to 100 megabits per second (Mb / s) and have good immunity to electromagnetic interference. A twisted pair cable can support data rates up to about 5 Gb / s, but this cable typically requires multiple twisted pair lines in a cable dedicated to the transmit or receive line. The conductor of the twisted pair cable provides good resistance to electromagnetic interference which can be improved by including a shield for the twisted pair in the cable.

Data transfer protocols such as Universal Serial Bus (USB) 3.0 and High-Definition Multimedia Interface (HDMI) 1.4 require data rates of 5 Gb / s or higher. Conventional coaxial cables cannot be implemented economically or reliably to support data rates close to this speed. Both fiber optic and twisted pair cables are capable of transmitting data at these rates, but fiber optic cables are significantly more expensive than twisted pair, making them less attractive for cost-sensitive applications that do not require high data rates and electromagnetic interference immunity do.

Automotive and truck infotainment systems and other electronic systems have begun to require cables capable of carrying high data rate signals. Automotive grade cables must not only meet environmental requirements (e.g., heat and moisture resistance), but also be flexible enough to be routed within the vehicle wiring harness and meet vehicle fuel economy requirements. It should have a low mass to help. Accordingly, there is a need for a wire cable that has a low mass and is flexible enough to be packaged in a vehicle wiring harness, yet has a high data rate that meets the cost targets that cannot be met by fiber optic cables. The specific application given for such a wire cable is automotive, but such a wire cable may also be found in other applications such as aerospace, marine, industrial control or other data communications.

The subject matter described in the background section should not be regarded as a prior art only as a result of its mention in the background section. Similarly, the problems mentioned in the background section or associated with the subject matter of the background section should not be regarded as previously recognized in the prior art. The claimed subject matter in the background section represents only different approaches, within themselves and by themselves, which can also be invented.

According to one embodiment of the invention, an electrical connection system is provided. The electrical connection system includes a first shielded cable having a first electrical conductor and a second electrical conductor surrounded by a first shield conductor surrounded by a first insulation jacket, a third insulation shield surrounded by a second shield conductor, and a third A second shielded cable having an electrical conductor and a fourth electrical conductor, a plug connector having a first plug terminal and a second plug terminal, and a first receptacle terminal and a second receptacle configured to receive the first and second plug terminals, respectively And a receptacle connector having a terminal and configured to mate with the plug connector. The electrical connection system further includes a plug shield that surrounds the plug connector in the longitudinal direction and is electrically isolated from the plug terminal, which has an upper plug shield and a lower plug shield. The lower plug shield is attached to the first shield conductor by a first pair of shield crimp wings. The ends of the first pair of shield crimp wings are positioned with the ends of the first shield conductor. The electrical connection system further includes a receptacle shield that longitudinally surrounds the receptacle connector and is electrically isolated from the receptacle terminal, which has an upper receptacle shield and a lower receptacle shield. The lower receptacle shield is attached to the second shield conductor by a second pair of shield crimp wings. The ends of the second pair of shield crimp wings are located together with the ends of the second shield conductor.

The ends of the first pair of shield crimp wings can range from 1.0 to 1.5 mm (mm) from the first and second attachment points, and the ends of the second pair of shield crimp wings are third and fourth From 1.0 to 1.5 mm from the point of attachment.

The lower plug shield can be attached to the first insulating jacket by a first pair of jacket crimp wings, and the lower plug shield is a first located in the middle of the first pair of shield crimp wings and the first pair of jacket crimp wings. It can be attached to the upper plug shield by the shield attachment component. The lower receptacle shield may be attached to the second insulating jacket by a second pair of jacket crimp wings, and the lower receptacle shield may be placed in the middle of the second pair of shield crimp wings and the second pair of shield crimp wings. 2 It can be attached to the upper receptacle shield by the shield attachment component.

The upper plug shield can form a first tab in direct compressive contact with the first pair of shield crimp wings of the lower plug shield, and the upper receptacle shield is integrated with the second pair of shield crimp wings of the lower receptacle shield It is possible to form a second tab in compression contact. Alternatively or additionally, the upper plug shield can form a first pair of opposing tabs in direct compressive contact with the first pair of shield crimp wings of the lower plug shield, the upper receptacle shield is the shield of the lower receptacle shield A second pair of opposing tabs that can be in compressive contact with the second pair of crimp wings can be formed.

The receptacle shield can be configured to slidably engage the interior of the plug shield. The ends of the first pair of shield crimp wings may be in substantially the same plane as the ends of the first shield conductor, and the ends of the second pair of shield crimp wings are substantially the same as the ends of the second shield conductor. It can be in a plane.

The first plug terminal may include a first attachment portion attached to the first electrical conductor and a planar first connection portion characterized by a generally rectangular cross section. The second plug terminal may also include a second attachment portion attached to the second electrical conductor and a planar second connection, characterized by a generally rectangular cross section. The first and second plug terminals may form a first pair of mirror-symmetrical terminals having bilateral symmetry about the longitudinal axis. The first receptacle terminal includes a third attachment portion and a first cantilever portion attached to the third electrical conductor and features a generally rectangular cross-section and forms a convex first contact point suspended from the first cantilever portion. The first contact point is configured to contact the first connection portion of the first plug terminal. The second receptacle terminal also includes a fourth attachment portion attached to the fourth electrical conductor, includes a second cantilevered portion, features a generally rectangular cross-section, and forms a convex second contact point suspended from the second cantilevered portion. The second contact point is configured to contact the second connection portion of the second plug terminal. The first and second receptacle terminals may form a second pair of mirror-symmetrical terminals having bilateral symmetry about the longitudinal axis. When the plug connector is connected to the receptacle connector, the main width of the first connection can be substantially perpendicular to the main width of the first cantilever, and the main width of the second connection can be substantially perpendicular to the main width of the second cantilever. .

Further configurations and advantages of the present invention will become more apparent upon reading the detailed description of the preferred embodiment of the present invention, which is given as a non-limiting example with reference to the accompanying drawings.

The invention will now be described by way of example with reference to the accompanying drawings.
1 is a cut-away perspective view of a shielded wire cable according to an embodiment.
2 is a cross-sectional view of the wire cable of FIG. 1 according to an embodiment.
3 is a chart showing the signal rise time and required cable impedance of various high speed digital transmission standards measured from 10 to 90% of the signal rise.
4 is a chart showing various performance characteristics of the wire cables of FIGS. 1 and 2 according to an embodiment.
5 is a graph of differential insertion loss versus signal frequency of the wire cables of FIGS. 1 and 2 according to an embodiment.
6 is an exploded perspective view of a wire cable assembly according to an embodiment.
7 is a perspective view of the electrical connector system of the wire cable assembly of FIG. 6 according to one embodiment.
8 is an exploded perspective view of the electrical connector system of FIG. 7 according to one embodiment.
9 is a plan view of the electrical connector system of FIG. 7 according to one embodiment.
10A is a cross-sectional end view of the plug connector of the electrical connector system of FIG. 7 according to one embodiment.
10B is a cross-sectional end view of the receptacle connector of the electrical connector system of FIG. 7 according to one embodiment.
11 is a side cross-sectional view of the electrical connector system of FIG. 7 according to one embodiment.

Electrical connector assemblies for shielded wire cable assemblies capable of carrying digital signals at transfer rates up to 5 Gigabits per second (Gb / s) (5 billion bits per second) to support both USB 3.0 and HDMI 1.4 performance specifications are provided herein. Is presented. The wire cable assembly includes a pair of conductors (wire pair) and a wire cable having a conductive sheet, and a braided conductor for isolating the wire pair from electromagnetic interference and determining the characteristic impedance of the cable. The wire pair is housed in a dielectric belting that helps provide a constant radial distance between the wire pair and the shield. The belt portion may also help maintain a constant twist angle between the wire pairs if the wire pairs are twisted. The constant radial distance between the wire pair and the shield and the constant twist angle gives the wire cable more constant impedance. The wire cable assembly also includes an electrical receptacle connector having a mirror-symmetric pair of plug terminals connected to the wire pair and / or an electrical plug connector having a mirror-symmetric pair of receptacle terminals connected to the wire pair configured to mate with the plug terminals of the electrical plug connector. can do. The receptacle and plug terminals each have a generally rectangular cross section, and when the first and second electrical connectors are mated, the main width of the receptacle terminals is substantially perpendicular to the main width of the plug terminals, and the contact point between the receptacle terminals and the plug terminals is the receptacle. And external to the plug terminal. Both the receptacle and plug connector include a shield that longitudinally surrounds the receptacle or plug terminal and is connected to the braided conductor of the wire cable. The wire cable assembly may include a receptacle or plug terminal and an insulating connector body that houses the shield.

1 and 2 show non-limiting examples of wire cables 100 used in wire cable assemblies. The wire cable 100 includes a central pair of conductors including a first inner conductor, referred to hereinafter as the first conductor 102 and a second inner conductor, referred to hereinafter as the second conductor 104. The first and second conductors 102 and 104 are formed of a conductive material having excellent conductivity, such as unplated copper or silver plated copper. As used herein, copper refers to a copper element or copper-based alloy. Also, as used herein, silver refers to a silver element or silver-based alloy. The design, construction and source of copper and silver plated copper conductors are known to those skilled in the art. The first and second conductors 102, 104 each include solid wire conductors, such as exposed (unplated) copper wire or silver plated copper wire having a diameter of about 0.321 millimeters (mm), which is generally 28. It is equivalent to AWG solid wire. Alternatively, the first and second conductors 102, 104 can be formed of solid wires with smaller dimensions, such as 30 AWG or 32 AWG, respectively. An alternative embodiment of the wire cable may use stranded wire for the first and second conductors 102, 104.

The central pair of first and second conductors 102, 104 can be twisted longitudinally over the excretion length L, for example once every 15.24 mm. Twisting the first and second conductors 102, 104 provides the benefit of reducing low-frequency electromagnetic interference of the signal carried by the central pair. However, the inventor has found that satisfactory signal transmission performance can be provided even by wire cables in which the first and second conductors 102 and 104 are not twisted together. Not twisting the first and second conductors 102, 104 can provide the benefit of reducing the manufacturing cost of the wire cable by eliminating the twisting process. Not twisting the first and second conductors 102, 104 reduces the differential insertion loss, but has the disadvantage of requiring certain restrictions on vehicle routing, particularly non-uniform bending along extended cable lengths.

Each of the first and second conductors 102, 104 is enclosed in respective first dielectric insulators and second dielectric insulators, hereinafter referred to as first and second insulators 108, 110. The first and second insulators 108, 110 are joined together. The first and second insulators 108 and 110 extend over the entire length of the wire cable 100 except for the portion removed at the end of the cable to terminate the wire cable 100. The first and second insulators 108, 110 are formed from a flexible dielectric material such as polypropylene. The first and second insulators 108 and 110 may be characterized as having a thickness of about 0.85 mm.

Bonding the first insulator 108 to the second insulator 110 helps maintain a constant distance S between the first conductor 102 and the second conductor 104. The methods required to make a pair of conductors with bonded insulators are well known to those skilled in the art.

The first and second conductors 102 and 104 and the first and second insulators 108 and 110 are belt portions 112 below, except for portions that are removed from the ends of the cables to terminate the wire cables 100. ) Completely enclosed in a third dielectric insulator, referred to as. The first and second insulators 108 and 110 and the belt portion 112 form a dielectric structure 113 together.

The belt portion 112 is formed of a flexible dielectric material such as polyethylene. As shown in Figure 2, the belt portion may be characterized by having a diameter (D) of 2.22mm. The first and second insulators 108, when the ends of the first and second insulators 108, 110 are peeled from the first and second conductors 102, 104 to form a termination of the wire cable 100, To facilitate removal of the belt portion 112 from 110, a release agent 114, such as talc-based powder, can be applied to the outer surfaces of the bonded first and second insulators 108, 110.

The belt portion 112 is completely enclosed in a conductive sheet, hereinafter referred to as inner shield 116, except for portions that may be removed at the end of the cable to terminate the wire cable 100. The inner shield 116 is longitudinally wrapped in a single layer around the belt 112 to provide a single seam 118 extending substantially parallel to the central pair of first and second conductors 102, 104. To form. The inner shield 116 is spirally wrapped around the belt 112 or is not wrapped in a vortex. The seam edge of the inner shield 116 can be overlapped such that the inner shield 116 covers at least 100 percent of the outer surface of the belt portion 112. The inner shield 116 is formed of a flexible conductive material, such as an aluminized biaxially oriented PET film. The biaxially oriented polyethylene terephthalate film is commonly known under the trade name MYLAR, and the aluminized biaxially oriented PET film will hereinafter be referred to as aluminized MYLAR film. The aluminized MYLAR film has a conductive aluminum coating applied to only one of the major surfaces, the other major surface is non-aluminized, and thus non-conductive. The design, construction and source for single-sided aluminized MYLAR films are well known to those skilled in the art. The non-aluminized surface of the inner shield 116 contacts the outer surface of the belt portion 112. The inner shield 116 may be characterized as having a thickness of 0.04 mm or less.

The belt portion 112 provides the advantage of maintaining the transmission line characteristics and providing a constant radial distance between the first and second conductors 102, 104 and the inner shield 116. The belt portion 112 further provides the advantage of keeping the length of twist excretion between the first and second conductors 102 and 104 constant. Shielded twisted pair cables found in the prior art typically have only air as a dielectric between the twisted pair and the shield. Both the distance between the first and second conductors 102, 104 and the inner shield 116, and the effective twist excretion lengths of the first and second conductors 102, 104 affect the wire cable impedance. Thus, a wire cable having a more constant radial distance between the first and second conductors 102, 104 and the inner shield 116 provides a more constant impedance. The constant twist excretion lengths of the first and second conductors 102, 104 also provide controlled impedance.

Alternatively, a single dielectric property that accommodates the first and second insulators to maintain a constant lateral distance between the first and second insulators and a constant radial distance between the first and second insulators and the inner shield. Wire cables that incorporate structures can be considered. The dielectric structure can also keep the length of twist excretion of the first and second conductors constant.

1 and 2, the wire cable 100 additionally includes a ground conductor, which is hereinafter referred to as a drain wire 120, disposed outside the inner shield 116. The drain wire 120 extends substantially parallel to the first and second conductors 102, 104, and in intimate contact or at least in electrical communication with the aluminized outer surface of the inner shield 116. The drain wire 120 generally includes a solid wire conductor such as a non-plated copper conductor, a tin plated copper conductor, or a silver plated copper conductor having a cross section of about 0.321 mm ² equivalent to a 28 AWG solid wire. Alternatively, the drain wire 120 may be formed of a solid wire having a smaller size, such as 30 AWG or 32 AWG. An alternative embodiment of the wire cable may use stranded wire for the drain wire 120. The design, construction and source of copper and tinned copper conductors are well known to those skilled in the art.

1 and 2, the wire cable 100 is the inner shield 116 and the drain wire 120, except for a portion that can be removed from the end of the cable to terminate the wire cable 100 ), Further comprising a braided wire conductor, hereinafter referred to as outer shield 124. The outer shield 124 is formed of a plurality of woven conductors, for example copper or tinned copper. As used herein, tin refers to a tin element or tin-based alloy. The design, construction and source of braided conductors used to provide such external shields are well known to those skilled in the art. The outer shield 124 makes intimate contact with both the inner shield 116 and the drain wire 120 or at least makes electrical communication. The wire forming the outer shield 124 may contact at least 65 percent of the outer surface of the inner shield 116. The outer shield 124 may be characterized as having a thickness of 0.30 mm or more.

The wire cable 100 shown in FIGS. 1 and 2 further includes an external dielectric insulator, hereinafter referred to as jacket 126. The jacket 126 surrounds the outer shield 124 except for a portion that can be removed at the end of the cable to terminate the wire cable 100. The jacket 126 forms an outer insulating layer that provides both electrical insulation and environmental protection for the wire cable 100. Jacket 126 is formed of a flexible dielectric material, such as polyvinyl chloride (PVC). Jacket 126 may be characterized as having a thickness of about 0.2 mm.

In the wire cable 100, the inner shield 116 is close to the belt portion 112, the outer shield 124 is close to the drain wire 120 and the inner shield 116, and the jacket 126 is provided. The formation of air gaps between these elements in close proximity to the outer shield 124 is configured to minimize or compact. This provides a wire cable 100 with controlled magnetic transmittance.

The wire cable 100 may be characterized by having a differential impedance of 95 Ohm.

3 shows the requirements for signal rise time (in picoseconds (ps)) and differential impedance (in ohms (Ω)) for USB 3.0 and HDMI 1.4 performance specifications. Figure 3 also shows the combined requirements for a wire cable that can simultaneously meet both USB 3.0 and HDMI 1.4 standards. The wire cable is expected to meet the combined USB 3.0 and HDMI 1.4 signal rise time and differential impedance requirements, shown in FIG. 7.

4 shows the differential impedance expected for wire cable 100 over a signal frequency range of 0 to 7500 MHz (7.5 GHz).

5 shows the expected insertion loss for a wire cable 100 with a length of 7 m over a signal frequency range of 0 to 7500 MHz (7.5 GHz).

Thus, as shown in Figures 4 and 5, the wire cable 100 having a length of up to 7 meters can transmit non-zero return (NRZ) digital data at a rate of up to 5 gigabit per second with an insertion loss of less than 20 dB. It is expected that it is possible to transmit.

As shown in the non-limiting example of FIG. 6, the wire cable assembly includes an electrical connector assembly. The connector assembly can include a receptacle connector 128 and a plug connector 130 configured to receive the receptacle connector 128, as shown in FIG. 7.

As shown in FIG. 8, the receptacle connector 128 has two terminals, a first receptacle terminal 132 and a second inner conductor (in the drawing) connected to the first inner conductor 102 of the wire cable 100. It includes a second receptacle terminal 134 connected to (not shown due to perspective). The first receptacle terminal 132 includes a first cantilevered portion 136 and the first cantilevered portion has a substantially rectangular cross section and is suspended from the first cantilevered portion 136 near the free end of the first cantilevered portion 136. A convex first contact point 138 is formed. The second receptacle terminal 134 also includes a similar second cantilever portion 140 and the second cantilever portion has a generally rectangular cross-section from the second cantilever portion 140 near the free end of the second cantilever portion 140. Suspended second contact points 142 are formed. 9, each of the first and second receptacle terminals 132, 134 includes an attachment 144 configured to receive the end of the inner conductor of the wire cable 100, and the first and first 2 Provides a surface for attaching the inner conductors 102, 104 to the first and second receptacle terminals 132,134. The attachment portion 144 is configured to maintain a predetermined distance S between the first inner conductor 102 and the second inner conductor 104. To provide improved electromagnetic shielding, the outer shield 124 of the shielded cable 100 extends close to the attachment 144. The receptacle terminal holder 148 partially accommodates the first and second receptacle terminals 132,134. The receptacle terminal holder 148 is provided between the first receptacle terminal 132 and the second receptacle terminal 134 to maintain a predetermined distance S between the first inner conductor 102 and the second inner conductor 104. Maintain spatial relationships. The first and second receptacle terminals 132 and 134 have bilateral symmetry about the longitudinal axis X and form a mirror-symmetric terminal pair that is substantially parallel to the longitudinal axis X and each other. do. In the illustrated embodiment, the distance between the first cantilever portion 136 and the second cantilever portion 140 is 2.85 mm between the centers. The first and second inner conductors 102, 104 of the wire cable 100 are attached to the attachments 144 of the first and second receptacle terminals 132, 134 using an ultrasonic welding process.

Referring to FIG. 8 once again, the plug connector 130 is connected to two terminals, a first plug terminal 160 connected to the first inner conductor 102 and a second inner conductor 104 of the wire cable 100. It includes a second plug terminal 162 connected. As shown in FIG. 9, the first plug terminal 160 includes a first elongated planar portion 164 having a generally rectangular cross section. The second plug terminal 162 also includes a similar second elongated planar portion 166. The planar portions of the plug terminals 160, 162 are configured to receive and contact the first and second contact points 138, 142 of the first and second receptacle terminals 132,134. The free end of the flat portion, when the plug connector 130 and the receptacle connector 128 are mated, the mating first and second receptacle terminals 132, 134 of the first and second flat portions 164, 166 It has an inclined shape so that it rides over the free end and is on top. Each of the first and second plug terminals 160 and 162 includes an attachment portion 144 similar to the attachment portion 144 of the first and second receptacle terminals 132 and 134, which are first and second interior. It is configured to receive the ends of the conductors 102, 104 and provide surfaces for attaching the first and second inner conductors 102, 104 to the first and second plug terminals 160, 162. The attachment portion 144 is configured to maintain a constant distance between the first inner conductor 102 and the second inner conductor 104. To provide improved electromagnetic shielding, the outer shield 124 of the shielded cable 100 extends close to the attachment 144. The plug terminal holder 170 partially accommodates the first and second plug terminals 160 and 162. The plug terminal holder 170 establishes a spatial relationship between the first plug terminal 160 and the second plug terminal 162 to maintain a predetermined distance S between the first and second internal conductors 102 and 104. To maintain. The first and second plug terminals 160, 162 have bilateral symmetry about the longitudinal axis X and form a mirror-symmetric terminal pair that is substantially parallel to the longitudinal axis X and each other. In the illustrated embodiment, the distance between the first flat portion and the second flat portion is 2.85 mm between the centers. The inventors have obtained data obtained from computer simulations that mirror-symmetric parallel receptacle terminals 132 and 134 and plug terminals 160 and 162 have strong effects on high-speed electrical properties such as impedance and insertion loss of the wire cable assembly. It was observed through. The first and second inner conductors 102, 104 of the wire cable 100 are attached to the attachments 144 of the first and second plug terminals 160, 162 using an ultrasonic welding process.

8, the first and second plug terminals 160 and 162 and the first and second receptacle terminals 132 and 134 are the first when the plug and receptacle connectors 128 and 130 are mated. And the main widths of the second receptacle terminals 132 and 134 are substantially perpendicular to the main widths of the first and second plug terminals 160 and 162, within the plug and receptacle connectors 128 and 130. As used herein, substantially vertical means that the main width is ± 15 ° of absolute right angle. The inventors observed that this orientation between the first and second plug terminals 160, 162 and the first and second receptacle terminals 132, 134 has a strong effect on insertion loss. Further, when the plug and receptacle connectors 128 and 130 are mated, the first and second receptacle terminals 132 and 134 overlap with the first and second plug terminals 160 and 162. Only the first and second contact points 138, 142 of the first and second receptacle terminals 132, 134 contact the planar blade portions of the first and second plug terminals 160, 162, and the first and second The contact areas formed between the receptacle terminals 132 and 134 and the first and second plug terminals 160 and 162 are the first and second receptacle terminals 132 and 134 and the first and second plug terminals 160 and 162 ), The plug and receptacle connectors 128 and 130 are configured to be smaller than the overlapping area between. Thus, the contact area, sometimes referred to as the wipe distance, is determined by the area of the first and second contact points 138, 142, not by the overlap between the terminals. Accordingly, the receptacle terminals 132 and 134 and the plug terminals 160 and 162 have first and second plug terminals of the first and second contact points 138 and 142 of the first and second receptacle terminals 132 and 134. As long as it is fully engaged with (160, 162), it provides the benefit of providing a constant contact area. Since both the plug and receptacle terminals are mirror-symmetrical pairs, the first contact area between the first receptacle terminal 132 and the first plug terminal 160 and between the second receptacle terminal 134 and the second plug terminal 162 The second contact area of is substantially the same. When used herein, substantially the same means that the difference in contact area between the first and second contact areas is less than 0.1 mm ² . The inventor has observed through data obtained from computer simulations that the difference between the contact area between the plug terminal and the receptacle terminal and the first contact area and the second contact area has a strong influence on the insertion loss of the wire cable assembly.

The first and second plug terminals 160, 162 are not accommodated in the first and second receptacle terminals 132, 134, so the first contact area when the plug connector 130 mates with the receptacle connector 128 Is outside the first plug terminal 160, and the second contact area is outside the second plug terminal 162.

The first and second receptacle terminals 132 and 134 and the first and second plug terminals 160 and 162 may be formed from a sheet of copper-based material. The first and second cantilever portions 136 and 140 and the first and second planar portions 164 and 166 may be selectively plated using copper / nickel / silver-based plating. The terminal can be plated with a 5 skin thickness. The first and second receptacle terminals 132 and 134 and the first and second plug terminals 160 and 162 have a receptacle connector 128 and a plug connector 130 having a low insertion vertical force of about 0.4 Newtons (45 grams). It is configured to represent. The low vertical force provides the benefit of reducing the wear of the plating during the connection / disconnection cycle.

As illustrated in FIG. 8, the plug connector 130 includes a plug shield 172 attached to the outer shield 124 of the wire cable 100. The plug shield 172 is separated from the first and second plug terminals 160 and 162 and the plug terminal holder 170 and surrounds them in the longitudinal direction. The receptacle connector 128 is also externally shielded from the wire cables 100 which are separated from the first and second receptacle terminals 132 and 134, the receptacle terminal holder 148 and the receptacle terminal cover 152 and surround them longitudinally. It includes a receptacle shield 174 attached to the portion (124). The receptacle shield 174 and the plug shield 172 are configured to slidably contact each other, and, when mating, provide electrical continuity between the outer shields 124 of the attached wire cable 100, and It provides electromagnetic shielding for the receptacle connectors 128, 130.

As shown in FIG. 8, the plug shield 172 is composed of two parts, that is, the lower plug shield 172A and the upper plug shield 172B. The lower plug shield 172A is a pair of crimp wings, ie a shield crimp adjacent to the attachment of the lower plug shield 172A configured to receive the exposed ends of the outer shield 124 of the wire cable 100. Wing 176 and jacket crimp wing 178. The shield crimp wing 176 is offset and configured to surround the exposed end of the outer shield 124 of the wire cable 100 when the shield crimp wing 176 is crimped to the wire cable 110. It is a bypass type crimp wing. To reduce the effective electrical length of the plug shield 172, the distal end, ie, distal end of the shield crimp wing 176 is disposed on the distal end, ie distal end, of the outer shield 124. The ends of the shield crimp wings 176 are within 1.0-1.5 mm of the attachment of the first and second conductors 102, 104 to the attachment portions 144 of the plug terminals 160, 162. Since the drain wire 120 of the wire cable 100 is interposed between the inner shield 116 and the outer shield 124 of the wire cable 110, the lower plug shield 172A is the outer shield 124 ), The drain wire 120 is electrically coupled to the lower plug shield 172A when crimped.

The jacket crimp wing 178 is also a bypass-type wing that is offset and configured to surround the jacket 126 of the wire cable 100 when the lower plug shield 172A is crimped to the wire cable 110.

As shown in FIG. 10A, the upper plug shield 172B is in direct contact with the shield crimp wing 176 and is positioned to face the mutually positioned and positioned to apply compressive force to the shield crimp wing 176 Includes a flexible tab 146. These flexible tabs 146 provide higher plug shields 172B and outer shields than those provided when the upper plug shield 172B is connected to the outer shield 124 only through the lower plug shield 172A. 124).

Referring again to FIG. 8, the receptacle shield 174 similarly consists of two parts, a lower receptacle shield 174A and an upper receptacle shield 174B. The lower receptacle shield 174A is a pair of crimp wings, that is, a shield crimp adjacent to the attachment of the lower receptacle shield 174A configured to receive the exposed ends of the outer shield 124 of the wire cable 100. Wing 176 and jacket crimp wing 178. The shield crimp wing 176 is offset and configured to surround the exposed end of the outer shield 124 of the wire cable 100 when the shield crimp wing 176 is crimped to the wire cable 110. It is a bypass type crimp wing. To reduce the effective electrical length of the receptacle shield 174, the distal end of the shield crimp wing 176, ie, the distal end, is disposed on the distal end, ie, distal end of the outer shield 124. The ends of the shield crimp wing 176 are within 1.0 to 1.5 mm of the attachment of the first and second conductors 102 and 104 to the attachments 144 of the receptacle terminals 132 and 134. Since the drain wire 120 of the wire cable 100 is interposed between the inner shield 116 and the outer shield 124 of the wire cable 110, the lower receptacle shield 174A is the outer shield 124 ), The drain wire 120 is electrically coupled to the lower receptacle shield 174A when crimped.

In addition, the insulating crimp wing is a bypass-type wing that is offset and configured to surround the jacket 126 of the wire cable 100 when the lower receptacle shield 174A is crimped to the wire cable 100.

As shown in FIG. 10B, the upper receptacle shield 174B is similarly positioned to be in direct contact with the shield crimp wing 176 and positioned to face each other to apply compressive force to the shield crimp wing 176. It includes a pair of flexible tabs 146. These flexible tabs 146 have a higher receptacle shield 174B and an outer shield than those provided when the upper receptacle shield 174B is connected to the outer shield 124 only through the lower receptacle shield 174A. 124).

The exterior of the plug shield 172 of the illustrated example is configured to slidably engage the interior of the receptacle shield 174, but the exterior of the receptacle shield 174 is slidably with the interior of the plug shield 172 Alternative embodiments of interlocking may be considered.

The receptacle shield 174 and plug shield 172 may be formed from a sheet of copper-based material. Receptacle shield 174 and plug shield 172 may be plated using copper / nickel / silver or tin-based plating. The first and upper receptacle shields 174A, 174B and the first and upper plug shields 172A, 172B can be formed by a stamping process well known to those skilled in the art.

The examples of plug connector 130 and receptacle connector 128 shown herein are connected to a wire cable, but other embodiments of plug connectors and receptacle connectors that are connected to conductive traces on a circuit board are contemplated.

To meet the requirements of applications in automotive environments, such as vibration and separation resistance, the wire cable assembly may further include a receptacle connector body 190 and a plug connector body 192, as shown in FIG. 6. . The receptacle connector body 190 and the plug connector body 192 are formed of a dielectric material, such as a polyester material.

Thus, a connector assembly is provided. The connector assembly is suitable for terminating the wire cable 100 and can transmit digital data signals at a data rate of 3.5 Gb / s or higher without modulation or encoding. The connector assembly is a plug terminal 160 due to a reduction in the effective length of the plug shield 172 and the receptacle shield 174 provided by the position of the shield crimp wing 176 close to the attachment 144 of the terminal. , 162) and the electromagnetic shielding of the receptacle terminals 132, 134 is improved. The connector assembly also provides the benefit of an improved electrical connection between the upper plug and receptacle shields 172B, 174B and the outer shield 124 of the wire cable 100.

Although the invention has been described in connection with its preferred embodiments, it is intended that the invention be not limited thereto, but rather limited only to the scope set forth in the claims below. For example, the above-described embodiments (and / or aspects thereof) may be used in combination with each other. In addition, various modifications may be made to the specific situation or material within the limits of the teachings of the present invention without departing from its scope. The dimensions, types of materials, orientations of the various components, and the number and location of the various components described herein are for defining parameters of certain embodiments, and are not limiting, but merely circular embodiments.

Numerous other embodiments and modifications within the spirit and scope of the claims will be apparent to those skilled in the art upon review of the above description. Therefore, the scope of the present invention should be determined with reference to the following claims along with the equivalent overall scope to which such claims are granted.

In the following claims, the terms “including” and “in which” are used as concise English equivalents of the terms “comprising” and “wherein”, respectively. Also, the use of terms such as first, second, etc. does not indicate any order of importance, rather, the terms first, second, etc. are used to distinguish one element from another. Also, the use of the singular expression does not indicate a limitation of the quantity, but rather the presence of at least one of the items mentioned. Additionally, directional terms such as parent, child, etc. do not indicate any specific orientation, rather, the terms parent, child, etc. are used to distinguish one element from another, and are used to positionally establish relationships between various elements. do.

In addition, the following limitations on the claims are not written in the functional-plus-function format, and these limitations are preceded by the declaration of the function void of the additional structure. It is not intended to be interpreted on the basis of section 35 USC § 112 (f), unless expressly used.

Claims (8)

Electrical connection system,
A first shielded cable 100 having a first electrical conductor and a second electrical conductor surrounded by a first shield conductor surrounded by a first insulating jacket 126;
A second shielded cable 100 having a third electrical conductor and a fourth electrical conductor surrounded by a second shield conductor surrounded by a second insulating jacket 126;
A plug connector 130 having a first plug terminal 160 and a second plug terminal 162;
A receptacle connector configured to match the plug connector 130 and having a first receptacle terminal 132 and a second receptacle terminal 134 configured to receive the first and second plug terminals 160, 162, respectively. 128);
A plug shield 172 that surrounds the plug connector 130 in a longitudinal direction and is electrically isolated from the plug terminal 160, has a top plug shield 172B and a bottom plug shield 172A, and a bottom plug shield 172A is attached to the first shield conductor by a first pair of shield crimp wings 176, and the ends of the first pair of shield crimp wings 176 are positioned with the ends of the first shield conductors Being, plug shield 172; And
A receptacle shield 174 that surrounds the receptacle connector 128 in a longitudinal direction and is electrically isolated from the receptacle terminal 132, has an upper receptacle shield 174B and a lower receptacle shield 174A, and a lower receptacle shield 174A is attached to the second shield conductor by a second pair of shield crimp wings 176, and the ends of the second pair of shield crimp wings 176 are positioned with the ends of the second shield conductors Being, including the receptacle shield 174,
The plug shield 172 is configured to slidably engage the interior of the receptacle shield 174, an electrical connection system. The end of the first pair of shield crimp wings (176) is in the range of 1.0 to 1.5 mm from the first and second attachment points, the end of the second pair of shield crimp wings (176). Is an electrical connection system in the range of 1.0 to 1.5 mm from the third and fourth attachment points. The method of claim 1, wherein the lower plug shield 172A is attached to the first insulating jacket 126 by a first pair of jacket crimp wings 178, and the lower plug shield 172A is a shield crimp wing ( 176) is attached to the upper plug shield 172B by a first shield attachment component located in the middle of the first pair of jacket crimp wings 178, and the lower receptacle shield 174A is Attached to the second insulating jacket 126 by a second pair of jacket crimp wings 178, the lower receptacle shield 174A has a second pair of shield crimp wings 176 and a jacket crimp wing 178. An electrical connection system, attached to the upper receptacle shield 174B by a second shield attachment component located in the middle of the second pair. The upper plug shield 172B forms a first tab in direct compressive contact with the first pair of shield crimp wings 176 of the lower plug shield 172A, and the upper receptacle shield 174B is an electrical connection system, forming a second tab in integral compressive contact with the second pair of shield crimp wings 176 of lower receptacle shield 174A. The upper plug shield (172B) of claim 1, wherein the upper plug shield (172B) forms a first pair of opposing tabs in direct compressive contact with the first pair of shield crimp wings (176) of the lower plug shield (172A), An electrical connection system, wherein the receptacle shield 174B forms a second pair of opposing tabs that are in compressive contact with the second pair of shield crimp wings 176 of the lower receptacle shield 174A. delete The terminal of the first pair of shield crimp wings 176 is in the same plane as the end of the first shield conductor, and the ends of the second pair of shield crimp wings 176 are the second shield. An electrical connection system, in the same plane as the end of the secondary conductor. The method of claim 1, wherein the first plug terminal 160 includes a first attachment portion 144 attached to the first electrical conductor and a first planar connection having a rectangular cross section, and the second plug terminal 162 ) Includes a second attachment 144 attached to the second electrical conductor and a planar second connection characterized by a rectangular cross-section, wherein the first and second plug terminals 160, 162 are relative to the longitudinal axis. A first mirror-symmetrical terminal pair having bilateral symmetry is formed, and the first receptacle terminal 132 includes a third attachment portion 144 and a first cantilever portion 136 attached to a third electrical conductor. 1 cantilevered portion is characterized by a rectangular cross-section and forms a convex first contact point 138 suspended from the first cantilevered portion 136 and the first contact point is configured to contact the first connection portion of the first plug terminal 160 The second receptacle terminal 134 is a fourth attachment portion attached to the fourth electrical conductor ( 144), has a second cantilever 140, the second cantilever is characterized by a rectangular cross section and forms a second convex second contact point 142 suspended from the second cantilever 140 and the second The contact point is configured to contact the second connection portion of the second plug terminal 162, and the first and second receptacle terminals 132 and 134 form a second pair of mirror-symmetrical terminals having bilateral symmetry about the longitudinal axis, , When the plug connector 130 is connected to the receptacle connector 128, the main width of the first connection portion is perpendicular to the main width of the first cantilever portion 136 and the main width of the second connection portion of the second cantilever portion 140 Electrical connection system, perpendicular to the main width.

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