JP2008123793A - Connector for board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the function of a mother board for arranging a connector for a board thereon from being influenced even when an edge board is not mounted to the connector for a board. <P>SOLUTION: In this connector for the board, when an edge board 18 is not mounted to a body part 10, contact parts 16af and 16bf of contact terminals 16ai arranged oppositely to each other in a connection end housing part 10A of the body part 10 are contacted on each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a board connector for electrically connecting an edge board to a wiring board.

  An edge board mounted in an electronic device has, for example, a terminal group (electrode group) on one side or both sides at one end as shown in Patent Document 3, for example, a motherboard via a card edge connector. Etc. are electrically connected. Such a card edge connector includes, for example, as shown in Patent Document 1, a base portion having a slot to which a terminal group of the edge board is attached and detached, and a terminal group of the edge board arranged on the inner peripheral portion of the slot. And a contact terminal group for electrical connection with the main elements.

  Further, a partition wall for adjusting the gap is provided in the slot to properly maintain the gap between the contact portions between the contact terminal rows facing each other. For example, as shown in Patent Document 2, when the edge board is not inserted into the slot, the gap adjusting partition wall has a predetermined gap between a pair of contact portions between the contact terminal rows. It is provided to occur. Accordingly, such a partition wall ensures an appropriate pressure for holding one end of the edge board in a contact terminal group composed of opposing contact terminal rows, and facilitates an attaching / detaching operation of the edge board to the card edge connector. . Further, the partition wall for adjusting the gap regulates the amount of elastic displacement of all the contact terminal groups so that the pair of contact portions of the contact terminal rows facing each other in the base portion do not approach or separate from each other by a predetermined distance or more.

JP 2002-237340 A Japanese Examined Patent Publication No. 61-6511 JP 2002-34060 A

  When the edge board as described above is an edge board (referred to as a splitter base in Patent Document 3) including a communication filter in a network including a telephone line as shown in Patent Document 3 described above, for example. For example, when maintenance or replacement of the communication filter is performed, that is, when the edge board is not inserted into the slot, the pair of contact portions between the contact terminal rows are not conductive, so communication for the mother board The control circuit etc. is open and does not function at all. Accordingly, it is impossible to maintain or replace such an edge board while maintaining the communication state of the communication system on the motherboard.

  However, depending on the electronic devices in the network, it is inconvenient to completely stop the communication function, and a user of such an electronic device is affected by noise even during maintenance or replacement of the edge board. Even so, it is desired that only the communication function in the electronic device is maintained.

  In view of the above problems, the present invention provides a board connector for electrically connecting an edge board to a wiring board, and the board connector is not attached to the board connector. An object of the present invention is to provide a board connector that does not affect the function of a mother board to be arranged.

  In order to achieve the above-described object, the board connector according to the present invention includes a connection end accommodating portion that detachably accommodates the one end portion of the edge board provided with an electrode group electrically connected to the one end portion; A wiring board having a circuit which is arranged opposite to each other in the connection end accommodating portion, and which selectively holds the electrode group of the edge board by a pair of contact portions and connects the electrode group to a circuit formed on the edge board. A pair of contact terminals for electrical connection, and when one end of the edge board is not attached to the connection end accommodating portion, the pair of contact portions in the contact terminal group abut against each other so that the circuit of the wiring board functions. It is characterized by.

  As is clear from the above description, according to the board connector according to the present invention, when one end of the edge board is not attached to the connection end accommodating part, the pair of contact terminals in the contact terminal group functions so that the circuit of the wiring board functions. Since the contact portions are in contact with each other, even if the edge board is not attached to the board connector, the function of the motherboard on which the board connector is arranged is not affected.

  4 and 5 respectively show the external appearance of an example of the board connector according to the present invention, together with the motherboard to which it is electrically connected.

  4 and 5, a plurality of board connectors are fixed on, for example, a motherboard PB built in an electronic device or the like. In FIGS. 4 and 5, one board connector is shown as a representative.

  The board connector includes a main body 10 that houses one end of the edge board 18 (see FIG. 7), and contact terminals 16ai that are arranged on the main body 10 and electrically connect the contact pads of the edge board 18 to the conductive layer of the motherboard PB. (I = 1 to 8) and hook members 12 </ b> A and 12 </ b> B as latch mechanisms that selectively hold one end of the edge board 18 to the main body 10.

  The motherboard PB has, for example, a circuit network connected in series with a predetermined circuit formed inside an edge board 18 described later.

For example, as shown in FIG. 7, the plurality of edge boards 18 are edge boards (DSL splitter base) including communication filters used in the network system. The edge board 18 includes a module body 10B and a connection end 18C that connects the module body 10B to the board connector.
The connection end portions 18C of the edge board 18 have contact pad groups 18pa on opposite surfaces.

Each contact pad group 18pa has four contact pads along the width direction at the same predetermined intervals corresponding to the arrangement of contact terminals 16ai described later.

  On both side surface portions of the connecting end portion 18C, cutout portions 18k are formed in which engaging ends 12k of hook members 12A and 12B described later are selectively engaged.

  On the outer surface of the bottom portion of the main body 10, positioning pins 10 </ b> P that are respectively fitted into a plurality of holes in the motherboard PB protrude with a predetermined interval.

  As shown in FIGS. 5 and 6, a connecting end accommodating portion 10 </ b> A that accommodates a connecting end portion 18 </ b> C of the edge board 18 that is attached and detached along the direction indicated by the arrow passes through the central portion of the main body portion 10. Is formed. On both side walls forming the connection end accommodating portion 10A, a notch portion 10E for positioning a contact pad group 18pa of the connection end portion 18C of the edge board 18 with respect to a contact portion of a contact terminal 16ai to be described later is formed. As shown in FIG. 9, the notch 10 </ b> E receives a part of the tip of the connection end 18 </ b> C of the edge board 18.

  Further, as shown in FIG. 5, a plurality of grooves into which fixing portions of contact terminals 16ai described later are press-fitted are formed in the inner peripheral portion of the connection end accommodating portion 10A along the direction perpendicular to the paper surface. ing. These grooves are formed opposite to each other at a predetermined interval corresponding to the contact pad group 18pa on the long side wall portion forming the connection end accommodating portion 10A. Adjacent grooves are partitioned by a partition wall.

  In addition, a pair of through holes into which pin members 14 for rotatably supporting hook members 12A and 12B, which will be described later, are inserted are opposed to the long side wall portion forming the connection end accommodating portion 10A. Is formed. Both end portions of the pin member 14 are press-fitted into and supported by the through holes.

  Since the hook members 12A and 12B have the same structure, the hook member 12A will be described, and the description of the hook member 12B will be omitted.

  The hook member 12A includes an operation portion 12a to be operated, a base portion 12b having a through hole into which the pin member 14 is inserted, and a connecting portion that connects the operation portion 12a and the base portion 12b. A locking end 12k that is selectively engaged with the notch 18C of the edge board 18 and holds the edge board 18 with respect to the main body 10 protrudes from one end of the operation part 12a. The locking end 12k is formed so as to be substantially perpendicular to the connecting portion.

  A protrusion 12e is formed at one end of the base 12b to be engaged with the tip of the connection end 18C of the edge board 18. As a result, when the operation portion 12a of the hook member 12A and the operation portion 12a of the hook member 12B are rotated in the directions indicated by the arrows in FIG. 4, that is, in directions away from each other, the connection end portion 18C of the edge board 18 is connected. However, since it is pushed up by the protrusion 12e, the connecting end 18C of the edge board 18 is easily detached from the connecting end accommodating portion 10A.

  The contact terminals 16ai (i = 1 to 8) arranged in the connection end accommodating portion 10A are, as shown in FIGS. 1 to 3, soldered fixed terminals 16S fixed to the motherboard PB, and edge boards 18 The movable piece portion 16B includes contact portions 16af and 16bf that are electrically connected to the contact pad group 18pa, and the fixed portion 16F that couples the soldering fixed terminal 16S and the movable piece portion 16B.

  As shown in FIG. 6, the fixing portion 16F is press-fitted into a groove in a wall portion that forms the connection end accommodating portion 10A. At this time, the contact portions 16af of one contact terminal 16ai facing each other are arranged so as to contact each other with the contact portion 16bf of the other contact terminal 16ai.

  The soldering fixing terminal 16S is arranged substantially perpendicular to the surface of the motherboard PB, and is fixed to the conductive layer of the motherboard PB by soldering. As a result, the contact terminal 16ai is electrically connected to the motherboard PB.

  The elastically displaceable movable piece 16B is of a two-point contact type and is composed of branch portions 16a and 16b that extend substantially parallel to each other. As shown in FIG. 3, the ends of the branch portions 16a and 16b are bent downward. The base end portions of the branch portions 16a and 16b are connected to the fixing portion 16F so as to join the fixing portion 16F, respectively. Each of the branch portions 16a and 16b has contact portions 16af and 16bf at the bent portions. The area of the substantially arc-shaped contact part 16af is set smaller than the area of the substantially flat contact part 16bf. In addition, the contact portion 16bf has a flat surface so that the contact portion 16af facing the contact portion 16af is in a safe and reliable contact.

  In such a configuration, the connection end portion 18C of the edge board 18 is mounted on the connection end accommodating portion 10A of the main body portion 10, and the contact pad group 18pa is electrically connected to the contact portions 16af and 16bf of the contact terminal 16ai. First, after the operation portions 12a of the hook members 12A and 12B are once rotated in a direction away from each other, the connection end portion 18C of the edge board 18 is contacted along the direction indicated by the arrow in FIG. By inserting between the portions 16af and 16bf, as shown in FIGS. 8 and 9, a part of the tip of the connecting end 18C is engaged with the notch 10E and positioned. Since the number (eight) of contact terminals 16ai is relatively small, the edge board 18 can be easily inserted between the contact portions 16af and 16bf.

  Further, immediately after the locking ends 12k of the hook members 12A and 12B come close to each other and are engaged with the notch 18C, the edge board 18 is held with respect to the main body 10.

On the other hand, when the held edge board 18 is removed from the main body 10,
First, each operating portion 12a is rotated so that the locking ends 12k of the hook members 12A and 12B are separated from the notch portion 18C, whereby the protrusion 12e pushes up the connection end portion 18C of the edge board 18, The contact pad group 18pa is slidably contacted with the contact portions 16af and 16bf. Therefore, the edge board 18 is easily removed. At that time, as shown in FIG. 6, since the contact portion 16af and the contact portion 16bf are in contact with each other, the circuit formed on the motherboard PB is not opened. Therefore, even when the edge board 18 is being replaced, the circuit of the mother board PB functions. For example, the communication function does not completely stop even when the user is using the circuit. At that time, since one edge board 18 is not connected to the telephone line in the network system, depending on the communication speed, there is a possibility that the voice and data transmission / reception of the telephone may be affected by noise. Will never stop completely.

  The contact terminals are not limited to the above-described contact terminals 16ai, but, for example, the contact terminals 20ai and 30ai of the one-point contact method shown in FIGS. It may be arranged in the part 10A.

  As shown in FIGS. 10 and 11, the contact terminals 20ai (i = 1 to 8) are electrically connected to a soldering fixing terminal 20S fixed to the motherboard PB and a contact pad group 18pa of the edge board 18. The movable piece portion 20B having the contact portion 20bf, and the fixed portion 20F that couples the soldering fixed terminal 20S and the movable piece portion 20B.

  The fixing portion 20F is press-fitted into a groove in a wall portion that forms the connection end accommodating portion 10A. At that time, the contact portions 20bf of the contact terminals 20ai are arranged so as to abut against the contact portions 30bf of the contact terminals 30ai facing each other.

  The soldering fixing terminal 20S is arranged substantially perpendicular to the surface of the motherboard PB, and is fixed to the conductive layer of the motherboard PB by soldering. As a result, the contact terminal 20ai is electrically connected to the motherboard PB.

  The tip of the elastically displaceable movable piece 20B has a contact portion 20bf at a bent portion that is bent downward. Further, the contact part 20bf has a flat surface so that the contact part 30bf facing each other comes in safe and reliable contact.

  The contact terminals 30ai (i = 1 to 8) are electrically connected to a soldering fixing terminal 30S fixed to the motherboard PB and a contact pad group 18pa of the edge board 18 as shown in FIGS. The movable piece portion 30B having the contact portion 30bf and the fixed portion 30F for coupling the soldering fixed terminal 30S and the movable piece portion 30B are configured.

  The fixing portion 30F is press-fitted into a groove in a wall portion that forms the connection end accommodating portion 10A. The soldering fixing terminal 30S is arranged substantially perpendicular to the surface of the mother board PB, and is fixed to the conductive layer of the mother board PB by soldering fixing. As a result, the contact terminal 30ai is electrically connected to the motherboard PB.

  The tip of the elastically displaceable movable piece 30B has a contact portion 30bf at the bent portion that is bent downward. Further, the area of the arc-shaped contact part 30bf is set smaller than the area of the contact part 30bf facing each other.

It is a perspective view which shows an example of the contact terminal used for an example of the board | substrate connector which concerns on this invention. It is a top view in the example shown by FIG. It is a front view in the example shown by FIG. It is a front view which shows an example of the connector for substrates which concerns on this invention. It is a top view in the example shown by FIG. It is a fragmentary sectional view shown along the VI-VI line in FIG. It is a front view which shows the state with which the edge board was mounted | worn in the example shown by FIG. It is a top view in the example shown by FIG. It is a fragmentary sectional view shown along the IX-IX line in FIG. It is a perspective view which shows another example of the contact terminal used for an example of the board | substrate connector which concerns on this invention. It is a front view in the example shown by FIG. It is a perspective view which shows another example of the contact terminal used for an example of the board | substrate connector which concerns on this invention. It is a front view in the example shown by FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Main-body part 10A Connection end accommodating part 16ai, 20ai, 30ai Contact terminal 16af, 16bf Contact part 18 Edge board 18C Connection end part 18pa Contact pad group PB Motherboard

Claims (2)

A connection end accommodating portion for detachably accommodating the one end portion of the edge board provided with an electrode group electrically connected to the one end portion;
A circuit that is arranged opposite to each other in the connection end accommodating portion, selectively sandwiches the electrode group of the edge board by a pair of contact portions, and connects the electrode group to a circuit formed on the edge board. A contact terminal group electrically connected to the wiring board having,
A board connector, wherein a pair of contact parts in the contact terminal group abut each other so that a circuit of the wiring board functions when one end part of the edge board is not attached to the connection end accommodating part.   The board connector according to claim 1, wherein the pair of contact portions in the contact terminal group are formed in an arc shape and a flat shape, respectively.

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