Patent Grant
7892037
1. Field of the Invention
This invention relates to a connector unit, and more particularly to a connector unit which is compatible with high-speed transmission of electrical signals.
2. Description of the Related Art
Conventionally, there has been proposed a socket comprised of an insulator, upper signal terminals, lower signal terminals, earth terminals, and a metallic shell (see Japanese Laid-Open Patent Publication (Kokai) No. 2005-19075).
The upper signal terminals and the lower signal terminals are held by the insulator.
The insulator is covered by the metallic shell.
Each of the upper signal terminals and the lower signal terminals includes a contact portion, a fixing portion, and a connection portion. The fixing portion is fixed to the insulator, the contact portion which continues to one end of the fixing portion extends forward, and the connection portion which continues to the other end of the fixing portion extends backward. The connection portion is connected to a printed-wiring board.
The contact portion and the fixing portion of the upper signal terminal are located above (upward in a vertical direction of the insulator) with respect to the contact portion and the fixing portion of the lower signal terminal.
This socket is connected to a plug.
The plug is comprised of an insulator, upper signal terminals, lower signal terminals, earth terminals, and a metallic shell.
The insulator is covered by the metallic shell, and each of the upper signal terminals and the lower signal terminals includes a contact portion, a fixing portion, and a connection portion. The fixing portion is fixed to the insulator, the contact portion which continues to one end of the fixing portion extends forward, and the connection portion which continues to the other end of the fixing portion extends backward. The connection portion is connected to a cable.
When this plug is connected to the above-mentioned socket, each contact portion of the upper signal terminals, the lower signal terminals and the like of the plug is brought into contact with each contact portion of the upper signal terminals, the lower signal terminals and the like of the socket, respectively, whereby the cable and the printed-wiring board are electrically connected to each other.
In the above-described conventional connector unit, the length of an intermediate portion which connects the connection portion and the fixing portion of each upper signal terminal is formed to be equal to that of an intermediate portion which connects the connection portion and the fixing portion of each lower signal terminal so as to make a passage length (length of a passage for an electrical signal) between the connection portion of the upper signal terminal of the plug and the connection portion of the upper signal terminal of the socket equal to a passage length (length of a passage for an electrical signal) between the connection portion of the lower signal terminal of the plug and the connection portion of the lower signal terminal of the socket when the plug is connected to the socket.
However, the length in a front-rear direction of the upper signal terminal and the lower signal terminal (the front-rear direction of the insulator) have to be formed to be equal, and hence the connection portion of the lower signal terminal is partially bent.
Therefore, the processing of the lower signal terminals is troublesome, which makes it difficult to produce the socket, and causes an increase in manufacturing costs.
The present invention has been made in view of these circumstances, and an object thereof is to provide a connector unit which is less liable to skew, and is easy to be manufactured.
To attain the above object, the present invention provides a connector unit comprising a connector including a plurality of contacts and a housing that holds the contacts, the plurality of contacts being formed by first contacts, and second contacts different from the first contacts, each of the first contacts and the second contacts including a contact portion, a terminal portion which is connected to one object to be connected, and an intermediate portion which connects between the contact portion and the terminal portion; and a mating connector including a plurality of mating contacts, and a mating housing that holds the plurality of mating contacts and is fitted in the housing, the plurality of mating contacts being formed by first mating contacts, and second mating contacts different from the first mating contact, each of the first mating contacts and the second mating contacts including a mating contact portion which is brought into contact with an associated one of the contact portions of the first and second contacts, a mating terminal portion which is connected to another object to be connected, and a mating intermediate portion which connects between the mating contact portion and the mating terminal portion, the mating intermediate portion of each first mating contact having a shape and length which are approximately the same as the shape and length of the intermediate portion of each second contact, the mating intermediate portion of the each second mating contact having a shape and length which are approximately the same as the shape and length of the intermediate portion of each first contact.
With the arrangement of the connector unit according to the present invention, the intermediate portion of each first contact and the mating intermediate portion of each second mating contact are configured to have approximately the same shape and length, and the intermediate portion of each second contact and the mating intermediate portion of each first mating contact are configured to have approximately the same shape and length. Therefore, when the connector is connected to the mating connector, the passage length between the terminal portion of each first contact of the connector and the terminal portion of each first mating contact of the mating connector becomes equal to that between the terminal portion of each second contact of the connector and the terminal portion of each second mating contact of the mating connector. This makes the connector less liable to skew. Further, it is easy to manufacture the first and second contacts and the first and second mating contacts.
Preferably the respective intermediate portions of each first contact, each second contact, each first mating contact, and each second mating contact are each formed to have a crank shape.
Preferably, the connector includes a shell which covers the housing, and the mating connector includes a mating shell which covers the mating housing, and the shell includes shell-side contact portions which are brought into contact with the mating shell, and shell-side terminal portions which are connected to the other object to be connected.
According to this invention, it is possible to provide a connector unit which is less liable to skew, and is easy to be manufactured.
The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.
The present invention will now be described in detail with reference to the drawings showing preferred embodiments thereof.
Referring to
The PC-side connector 10 is mounted on a printed board in a so-called notebook PC, not shown, and a front end of the PC-side connector 10 protrudes from a casing of the notebook PC. The PC-side connector 10 is comprised of PC-side contacts (contacts) 13, PC-side ground contacts 14, and a PC-side housing (housing) 15.
The dock-side connector 20 is mounted on a printed board in a docking station, not shown, which is placed on a desk, not shown, and a front end of the dock-side connector 20 protrudes from a casing of the docking station. When the notebook PC is used on the desk, the dock-side connector 20 is connected to the PC-side connector 10 provided in the notebook PC. The dock-side connector 20 is comprised of dock-side contacts (mating contacts) 23, dock-side ground contacts 24, and a dock-side housing (mating housing) 25.
Referring to
The contact portion 14a is at one end of each PC-side ground contact 14, and is pin-shaped.
The terminal portion 14b is at the other end of the PC-side ground contact 14, and is pin-shaped. The terminal portion 14b is inserted in an associated one of through holes of the printed board of the notebook PC and is soldered thereto.
The intermediate portion 14c is crank-shaped, and connects between the contact portion 14a and the terminal portion 14b.
Each of the dock-side ground contacts 24 is formed by blanking and bending a metal plate. Each dock-side ground contact 24 includes a contact portion 24a, a terminal portion 24b, and an intermediate portion 24c.
The contact portion 24a is at one end of each dock-side ground contact 24, bent into a substantial S-shape, and is brought into contact with the associated contact portion 14a of each PC-side ground contact 14.
The terminal portion 24b is at the other end of each dock-side ground contact 24 and is pin-shaped. The terminal portion 24b is inserted in an associated one of through holes of the printed board of the dock station and is soldered thereto.
The intermediate portion 24c connects between the contact portion 24a and the terminal portion 24b.
Referring to
Each of the first PC-side contacts 131 is formed by blanking and bending a metal plate. Each first PC-side contact 131 includes a contact portion 131a, a terminal portion 131b, and an intermediate portion 131c.
The contact portion 131a is at one end of each first PC-side contact 131, and is pin-shaped.
The terminal portion 131b is at the other end of each first PC-side contact 131, and is pin-shaped. The terminal portion 131b is inserted in an associated one of the through holes of the printed board of the notebook PC and is soldered thereto.
The intermediate portion 131c is bent into a substantial crank shape, and connects between the contact portion 131a and the terminal portion 131b.
Each of the second PC-side contacts 132 is formed by blanking and bending a metal plate. Each second PC-side contact 132 includes a contact portion 132a, a terminal portion 132b, and an intermediate portion 132c.
The contact portion 132a is at one end of each second PC-side contact 132, and is pin-shaped.
The terminal portion 132b is at the other end of each second PC-side contact 132, and is pin-shaped. The terminal portion 132b is inserted in an associated one of the through holes of the printed board of the notebook PC to be soldered.
The intermediate portion 132c is bent into a substantial crank shape, and connects between the contact portion 132a and the terminal portion 132b. The length of the intermediate portion 131c of each first PC-side contact 131 is different from that of the intermediate portion 132c of each second PC-side contact 132.
As shown in
Each of the first dock-side contacts 231 is formed by blanking and bending a metal plate. Each first dock-side contact 231 includes a contact portion 231a, a terminal portion 231b, and an intermediate portion 231c.
The contact portion 231a is at one end of each first dock-side contact 231, and is bent into a substantial S-shape. The contact portion 231a is brought into contact with the associated contact portion 131a of each first PC-side contact 131.
The terminal portion 231b is at the other end of each first dock-side contact 231. The terminal portion 231b is inserted in an associated one of the through holes of the printed board of the dock station and is soldered thereto.
The intermediate portion 231c is bent into a substantial crank shape, and connects the contact portion 231a and the terminal portion 231b.
Each of the second dock-side contacts 232 is formed by blanking and bending a metal plate. Each second dock-side contact 232 includes a contact portion 232a, a terminal portion 232b, and an intermediate portion 232c.
The contact portion 232a is at one end of each second dock-side contact 232, and is bent into a substantial S-shape. The contact portion 232a is brought into contact with the associated contact portion 132a of each second PC-side contact 132.
The terminal portion 232b is at the other end of each second dock-side contact 232. The terminal portion 232b is inserted in an associated one of the through holes of the printed board of the dock station to be soldered.
The intermediate portion 232c is bent into a substantial crank shape, and connects between the contact portion 232a and the terminal portion 232b. The length of the intermediate portion 231c of each first dock-side contact 231 is different from that of the intermediate portion 232c of each second dock-side contact 232.
As shown in
The shape and length of the intermediate portion 131c of each first PC-side contact 131 are approximately the same as those of the intermediate portion 232c of each second dock-side contact 232. Further, the shape and length of the intermediate portion 132c of each second PC-side contact 132 are approximately the same as those of the intermediate portion 231c of each first dock-side contact 231. Therefore, when the PC-side connector 10 and the dock-side connector 20 are fitted, the passage length from the terminal portion 131b of each first PC-side contact 131 to the terminal portion 231b of each first dock-side contact 231 and the passage length from the terminal portion 132b of each second PC-side contact 132 to the terminal portion 232b of each second dock-side contact 232, as shown in
As shown in
The housing body 151 is substantially box-shaped, and includes a receiving space 1510.
The first disposition portion 152 is substantially plate-shaped, and is connected to a bottom 1511 (see
The PC-side contacts 13 and the PC-side ground contacts 14 are integrally formed on the PC-side housing 15 by a so-called mold-in method. It should be noted that the contacts 13 and 14 may be configured to be held by the PC-side housing 15 by press-fitting.
A shell 17 is formed by blanking and bending a metal plate, and covers the housing body 151 of the PC-side housing 15. The shell 17 includes shell-side contact portions 171 which are connected to a mating shell 27, and shell-side terminal portions 172 which are connected to the through holes of the printed board by soldering.
Referring to
The terminal portions 131b of the plurality of first PC-side contacts 131 which are arranged on one surface of the first disposition portion 152, and the terminal portions 131b of the plurality of first PC-side contacts 131 which are arranged on the other surface of the first disposition portion 152 are held by the locator 18, and are arranged in two rows along the longitudinal direction of the housing 15. Each row of the terminal portions 131b is located on the outer side of the corresponding row of the terminal portions 14b, and is located on the inner side of the corresponding row of the terminal portions 132b. Each row of the terminal portions 132b is displaced from the corresponding row of the terminal portions 131b by approximately half the length of spacing between each row of the terminal portions 131b and the corresponding row of the terminal portions 14b in the direction of the width W15 of the PC-side housing 15.
The terminal portions 132b of the plurality of second PC-side contacts 132 which are arranged on one surface of the first disposition portion 152 and the terminal portions 132b of the plurality of second PC-side contacts 132 which are arranged on the other surface of the first disposition portion 152 are held by the locator 18, and are arranged in two rows along the longitudinal direction of the PC-side housing 15. Each row of the terminal portions 132b is located on the outer side of the corresponding row of the terminal portions 131b, and is parallel to the row of the terminal portions 131b. The row of the terminal portions 132b, the row of the terminal portions 131b, and the row of the terminal portions 14b are displaced from one another in the longitudinal direction of the PC-side housing 15. Therefore, the terminal portions 131b, the terminal portions 132b, and the terminal portions 14b form so-called staggered arrangement (zigzag arrangement).
As shown in
The base portion 251 is substantially box-shaped (see
The housing body 252 is continuous to an upper part of the base portion 251, and is substantially box-shaped (see
The fitting portion 253 is continuous to an upper part of the housing body 252, and is inserted into the receiving space 1510 of the PC-side housing 15. The fitting portion 253 includes a first receiving space 2531, and a second receiving space 2532. The first receiving space 2531 receives the first disposition portion 152 of the PC-side housing 15. The second receiving space 2532 receives the second disposition portion 153 of the PC-side housing 15.
The first receiving space 2531 of the fitting portion 253 is formed with a plurality of contact accommodating grooves 2533 at equally-spaced intervals in two opposed inner surfaces thereof. The dock-side ground contacts 24, the first dock-side contacts 231, and the second dock-side contacts 232 are accommodated in the contact accommodating grooves 2533.
The dock-side contacts 23 and the dock-side ground contacts 24 are integrally formed on the dock-side housing 25 by the so-called mold-in method. It should be noted that the contacts 23 and 24 may be configured to be held by the dock-side housing 25 by press-fitting.
The shell 27 is formed by blanking and bending a metal plate, and covers the dock-side housing 25. The shell 27 includes mating shell contact portions 271 which are connected to the shell-side contact portions 171 of the shell 17, and mating shell terminal portions 272 which are connected to the through holes of the printed board by soldering.
Referring to
The terminal portions 231b of the plurality of first dock-side contacts 231 which are arranged on one inner surface of the first receiving space 2531 of the fitting portion 253, and the terminal portions 231b of the plurality of first dock-side contacts 231 which are arranged on the other inner surface of the first receiving space 2531 are held by the locator 28, and are arranged in two rows along the longitudinal direction of the dock-side housing 25. Each row of the terminal portions 231b is located on the outer side of the corresponding row of the terminal portions 24b, and is parallel to the row of the terminal portions 24b. The row of the terminal portions 232b is displaced by approximately half the length of spacing between the row of the terminal portions 231b and the row of the terminal portions 24b, from the terminal portions 231b toward the terminal portions 24b in the direction W25 of the width of the dock-side housing.
The terminal portions 232b of the plurality of the second dock-side contacts 232 which are arranged on one inner surface of the first receiving space 2531 of the fitting portion 253, and the terminal portions 232b of the plurality of the second dock-side contacts 232 which are arranged on the other inner surface of the first receiving space 2531 are held by the locator 28, and are arranged in two rows along the longitudinal direction of the dock-side housing 25. Each row of the terminal portions 232b is located on the inner side of the corresponding row of the terminal portions 231b, located on the outer side of the corresponding row of the terminal portions 24b, and is parallel to the row of the terminal portions 231b. The row of the terminal portions 232b, the row of the terminal portions 231b, and the row of the terminal portions 24b are displaced in the longitudinal direction of the dock-side housing. Therefore, the rows of the terminal portions 231b, 232b, and 24b form so-called staggered arrangement (zigzag arrangement).
As shown in
As described above, when the PC-side connector 10 and the dock-side connector 20 are fitted, since the passage length from the terminal portion 131b of each first PC-side contact 131 to the terminal portion 231b of each first dock-side contact 231 becomes approximately equal to the passage length from the terminal portion 132b of each second PC-side contact 132 to the terminal portion 232b of each second dock-side contact 232, it is possible to easily carry out impedance matching, and the connectors are less liable to skew.
Further, since all of the intermediate portions 131c and 132c of the respective first and second PC-side contacts 131 and 132, and the intermediate portions 231c and 232c of the respective first and second dock-side contacts 231 and 232 are crank-shaped, but not curved differently from the prior art, it is possible to easily form contacts, thereby making it possible to reduce the manufacturing costs of the connector.
It should be noted that although in the above-described embodiment, the PC-side connector 10 and the dock-side connector 20 include the respective shells 17, and 27, the shells 17 and 27 may not be used.
It is further understood by those skilled in the art that the foregoing are the preferred embodiments of the present invention, and that various changes and modification may be made thereto without departing from the spirit and scope thereof.
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| Number | Date | Country | |
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