JP5959212B2 - connector - Google Patents

Description

  The present invention relates to a connector that is mounted on a circuit board that is formed mainly of a conductive member and whose mounting surface is insulated.

  A connector-mounted circuit board in which a connector is mounted on a circuit board is known. The connector-mounted circuit board may be required to be disposed in a thin space, and in that case, it is necessary to reduce the height of the entire connector-mounted circuit board. As a configuration to reduce the height, a configuration is known in which a circuit board is cut out in a thickness direction to form a cut-out portion, and a connector is disposed on the cut-out portion and mounted (for example, see Patent Document 1 below). .

  In addition, when mounting components that generate heat at a relatively high temperature, such as LEDs (light emitting diodes), to a circuit board, a general synthetic resin circuit board cannot be used. A manufactured circuit board is used. A metal circuit board is mainly used with its mounting surface subjected to insulation treatment. Also, in the case of forming a hollow portion for reducing the height in a metal circuit board, generally, after applying insulation treatment to the metal circuit board, the circuit board is hollowed out and the hollow portion is formed. Form. In that case, the cross section that forms the hollow portion is a conductive cross section in which no insulation treatment remains. In general, re-insulation is not performed on the conductive cross section in order to reduce the cost.

JP 2006-228446 A

  Therefore, in a connector mounted on a circuit board that is formed mainly of a conductive member such as metal and whose mounting surface is insulated, the connector mounted circuit board can be reduced in profile and the connector conductivity can be reduced. Therefore, there is a demand for a structure that can ensure insulation (creeping distance) between the contact and the conductive cross section of the cut-out portion of the circuit board.

  Accordingly, the present invention realizes a low profile in the state of the connector-mounted circuit board in a connector that is mounted on a circuit board that is mainly formed of a conductive member and whose mounting surface is insulated. It is an object of the present invention to provide a connector capable of ensuring a creepage distance between a conductive contact and a conductive cross section of a cut-out portion of a circuit board.

  The present invention relates to a circuit board formed mainly of a conductive member and having a mounting surface subjected to an insulation process, the circuit board having a hollow portion cut out in a thickness direction of the circuit substrate and forming the hollow portion. A connector that is disposed and mounted on the punched-out portion of a circuit board that is not insulated in the cross section in the thickness direction of the board, and is formed of a conductive member and electrically connected to the electrode on the mounting surface. And a housing formed mainly of an insulating member and directly or indirectly holding the contact, the housing including a cross-section covering portion that covers the cross-section of the hollowed portion, The present invention relates to a connector having an interposition portion that is continuous with a cross-section covering portion and is provided so as to be interposed between the mounting surface and the contact.

  The contact includes a contact base that is held by the housing, and a substrate-side contact pin that is connected to the contact base and contacts an electrode on the mounting surface. The surface direction of the pin is preferably bent with respect to the surface direction of the contact base.

  According to the present invention, in a connector mounted on a circuit board that is formed mainly of a conductive member and whose mounting surface is insulated, the connector mounted circuit board can be reduced in height and the connector conductive It is possible to provide a connector that can ensure a creepage distance between the conductive contact and the conductive cross section of the cut-out portion of the circuit board.

1 is a perspective view showing a connector 1 according to an embodiment of the present invention in a state where a cable connector 8 is connected to the connector 1 and the connector 1 is mounted on a circuit board 9. It is a perspective view which shows the connector 1 shown in FIG. It is the perspective view which looked at the connector 1 shown in FIG. 2 from the insertion port 5 side. (A) And (b) is the perspective view which looked at the contact 2 from the different angle. It is a perspective view which shows the cable connector 8 in the state which abbreviate | omitted the cable. FIG. 2 is a longitudinal sectional perspective view of the connector 1 shown in FIG. 1 cut in a thickness direction D12 of the circuit board 9 so as to pass through a base connecting portion 23 and a tongue piece 28; FIG. 2 is a longitudinal sectional view of the connector 1 shown in FIG. 1 cut in a thickness direction D12 of the circuit board 9 so that a contact base 24 is exposed. It is a longitudinal cross-sectional view (corresponding to FIG. 7) showing a contact 2A of a modified example.

  Hereinafter, an embodiment of the connector 1 of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a connector 1 according to an embodiment of the present invention in a state in which a cable connector 8 is connected to the connector 1 and the connector 1 is mounted on a circuit board 9. FIG. 2 is a perspective view showing the connector 1 shown in FIG. FIG. 3 is a perspective view of the connector 1 shown in FIG. 2 viewed from the insertion port 5 side. 4A and 4B are perspective views of the contact 2 viewed from different angles.

  As shown in FIG. 1, the connector 1 of this embodiment is a board-mounted connector that is mounted on a circuit board 9. The connector 1 is connected to the counterpart cable connector 8.

  In the description of the present embodiment, in the state where the connector 1 is mounted on the circuit board 9 and the cable connector 8 is connected (the state shown in FIG. 1), the circuit board 9 is out of the thickness direction D12 of the circuit board 9. A direction from the mounting surface 91 toward the back surface 95 is referred to as a “downward direction D1”, and a direction opposite to the downward direction D1 is referred to as an “upward direction D2”. A direction along the side edge of the circuit board 9 is referred to as a “lateral direction D34”, and a direction orthogonal to the thickness direction D12 and the horizontal direction D34 is referred to as a “front-rear direction D56”. Of the front-rear direction D56, the direction from the outside to the inside of the circuit board 9 is referred to as “front direction D5”, and the direction opposite to the front direction D5 is referred to as “rear direction D6”. Of the horizontal direction D34, the left direction toward the front direction D5 is referred to as “left direction D3”, and the right direction is referred to as “right direction D4”.

The circuit board 9 is a circuit board that is formed mainly of a conductive member such as a metal plate and in which the mounting surface 91 is insulated. Examples of the material of the conductive member include a metal plate mainly made of aluminum. The insulation process is performed, for example, by forming an insulation treatment film on the outer surface of the metal plate.
The circuit board 9 is further formed so that, for example, at least a mounting surface 91 of a metal plate is subjected to insulation treatment, and then a printed wiring (not shown) and an electrode 92 are formed on the mounting surface 91 to cover a part of the printed wiring. It is formed by performing an insulation treatment.

  The circuit board 9 has a hollow part 93 that is cut out in the thickness direction D12 of the circuit board 9 at an end part (an end part in the rear direction D6) in the surface direction (the direction in which the D34-D56 plane expands). In the present embodiment, the punched-out portion 93 has a substantially rectangular shape opened in the rear direction D6. The insulation treatment is not applied to the cross section (also referred to as “conductive cross section”) 94 in the thickness direction D12 of the circuit board 9 forming the punched portion 93.

  The reason is as follows. In the case of forming a hollow portion in a metal circuit board in order to reduce the height, generally, the circuit board 9 is hollowed out after the mounting surface 91 is mainly insulated from the metal circuit board. As a result, the punched-out portion 93 is formed. In that case, the cross section 94 that forms the hollowed-out portion 93 is a conductive cross section in which no insulation treatment remains. In general, the insulating section 94 is not subjected to another insulating process for cost reduction.

  The connector 1 according to the present embodiment is disposed and mounted on a hollow portion 93 in the circuit board 9. The connector 1 of this embodiment is comprised mainly by the contact 2, the housing 3, and the fixing member 7, as shown in FIGS. The connector 1 of the present embodiment is used with the counterpart cable connector 8 shown in FIGS. 1 and 5 connected thereto. FIG. 5 is a perspective view showing the cable connector 8 with the cable omitted.

  The contact 2 is formed by punching and bending a plate-shaped member made of a highly conductive conductive member. As shown in FIGS. 1 and 6, a plurality of contacts 2 are arranged at predetermined intervals in the lateral direction D34 and mechanically and electrically connected to the electrodes 92 on the mounting surface 91 of the circuit board 9. Is done. 6 is a longitudinal cross-sectional perspective view of the connector 1 shown in FIG. 1 cut in the thickness direction D12 of the circuit board 9 so as to pass through the base connecting portion 23 and the tongue piece 28. FIG. FIG. 7 is a longitudinal sectional view of the connector 1 shown in FIG. 1 cut in the thickness direction D12 of the circuit board 9 so that the contact base 24 is exposed.

As shown in FIGS. 1 to 4, 6, and 7, the contact 2 includes a contact base 24 held by the housing 3, and a substrate-side contact that is connected to the contact base 24 and contacts the electrode 92 of the mounting surface 91. Pin 21, mating contact pin 25 that is coupled to contact base 24 and contacts a female contact terminal (not shown) of mating cable connector 8, and tongue that is coupled to contact base 24 and held in housing 3 28.
In this specification, “hold” means that there is play, but the movement range of the object to be held is restricted to a certain range, or the object to be held is sandwiched (clamped) and is substantially immovable. And so on.

The contact base 24 has a substantially rectangular plate shape extending in the D12-D56 plane. The contact base 24 includes a “U” -shaped punched-out hole 29 at the center thereof.
The tongue piece 28 is provided inside the “U” -shaped punching hole 29. The tongue piece 28 is connected to the contact base 24 in the rear direction D6. The tongue piece 28 is formed by bending in a direction protruding in the left direction D3 from a state (not shown) extending in the D12-D56 plane and protruding in the front direction D5. The tongue piece 28 is provided to determine the position of the contact 2 in the front-rear direction D56.

The substrate-side contact pin 21 includes a base connecting portion 23 that forms a connecting portion with the contact base 24 on the substrate portion side, and a terminal portion 22 that contacts the electrode 92 of the circuit board 9 on the distal end portion side.
The board-side contact pins 21 (including the terminal part 22) extend along the direction (D34-D56 plane) in which the mounting surface 91 expands in the part excluding the base connecting part 23, and extend toward the front direction D5. ing. The terminal portion 22 is mechanically and electrically connected to the electrode 92 of the circuit board 9 by soldering.
The board-side contact pins 21 (including the terminal portion 22) are arranged such that the tip end side (the terminal portion 22 side) and the base end side (the base connecting portion 23 side) are downward in the portion excluding the base connecting portion 23. It has a substantially convex shape that is biased toward D1 and has a central portion in the longitudinal direction biased toward the upward direction D2.

  The base connecting portion 23 constitutes the base end portion of the substrate side contact pin 21 and is connected to the upper end portion of the contact base 24. FIG. 7 is a longitudinal sectional view of the connector 1 shown in FIG. 1 cut in the thickness direction D12 of the circuit board 9 so that the contact base 24 is exposed.

  The base connecting portion 23 is formed by being bent in a direction protruding in the left direction D3 from a state extending in the plane D12-D56 and protruding in the upward direction D2. That is, in the contact 2, the surface direction of the substrate-side contact pin 21 is bent with respect to the surface direction (D12-D56 plane) of the contact base 24.

  The mating contact pin 25 extends in the D12-D56 plane, and is connected to the foremost portion of the lower end portion of the contact base 24 at the base end portion 27 thereof. The mating contact pin 25 extends in the rear direction D6, and has a contact portion 26 at the tip on the rear direction D6 side. The contact portion 26 is formed in a hook shape with a pointed tip so that it can be inserted into a female contact terminal (not shown) of the counterpart cable connector 8. The mating contact pin 25 comes into contact with a plurality of female contact terminals (not shown) provided on the mating cable connector 8 and is mechanically and electrically connected.

  The housing 3 is formed mainly of an insulating member such as a synthetic resin, and holds the contact 2 directly or indirectly. “It is formed mainly of an insulating member” means that most of the insulating member is formed, and a conductive member may be partially used as long as the function of the housing is not hindered. “Holding the contact 2 directly” means that the housing 3 holds the contact 2 without interposing another member. “Indirectly holding the contact 2” means that the housing 3 holds the contact 2 with another member interposed therebetween.

As shown in FIGS. 1 to 3, the housing 3 holds the contact 2 and is connected to the socket housing 80 of the cable connector 8 of the other party.
The housing 3 has a substantially box shape, and includes a housing main body portion 31 that forms an upper portion of the housing 3, a contact placement groove portion 4 in which the contact 2 is disposed, and an insertion portion 81 ( And a connector insertion slot 5 into which a connector is inserted (see FIG. 5).

As shown in FIGS. 2, 3, and 6, the housing main body 31 includes a side wall portion 32, a cross-section covering portion 35, and an interposition portion 36.
The side wall portion 32 forms a wall portion in the lateral direction D34 of the housing main body portion 31.
The cross-section covering portion 35 opposes the conductive cross section 94 of the punched-out portion 93 and covers the conductive cross section 94. In the present embodiment, the cross-section covering portion 35 is separated from the conductive cross-section 94. Note that the cross-section covering portion 35 may be in contact with the conductive cross-section 94.
The interposition part 36 is continuous with the cross-section covering part 35 and is provided so as to be interposed between the mounting surface 91 and the substrate-side contact pin 21 of the contact 2. The thickness of the interposition part 36 in the thickness direction D12 is, for example, 0.1 to 0.8 mm, preferably 0.1 to 0.2 mm.

As shown in FIG. 1 to FIG. 3 and FIG. 6, a plurality of contact arrangement groove portions 4 are provided on the upper portion of the housing main body portion 31 corresponding to the plurality of contacts 2. The plurality of contact arrangement grooves 4 are provided at predetermined intervals in the lateral direction D34.
The contact placement groove portion 4 is provided in the upper portion of the housing 3 so as to open in the upward direction D2, and the upper groove portion 41 in which the substrate side contact pin 21 is disposed, the base groove portion 42 in which the contact base 24 is disposed, and the tongue piece 28. And a tongue piece groove portion 43 that is disposed and held.

  As shown in FIGS. 2 and 3, the connector insertion port 5 is located below the housing body 31, and has a rectangular bottom plate portion 51, side plate portions 52, 52 erected from the outer periphery of the bottom plate portion 51, and A front plate portion 53 and a rectangular top plate portion 54 are provided. The top plate portion 54 connects and connects the top portions of the side plate portions 52, 52 and the front plate portion 53, and faces the bottom plate portion 51 in the thickness direction D12. The connector insertion slot 5 is surrounded by the bottom plate portion 51, the side plate portions 52 and 52, the front plate portion 53, and the top plate portion 54, and is formed so that the rear direction D6 side is opened. The insertion part 81 of the socket housing 80 of the mating cable connector 8 is inserted into the connector insertion slot 5 from the rear direction D6.

  The housing 3 (housing main body portion 31) includes a fixing member holding portion 61 that holds and holds a held piece portion 72 (described later) on the base end side of the fixing member 7 at the upper portion of the side wall portion 32. Further, the housing 3 includes a connector side engaging portion 62 below the side wall portion 32 (outside in the lateral direction D34 with respect to the connector insertion port 5).

  The fixing member 7 is formed of a rectangular plate-shaped member made of a metal material, and is also called a reinforcing metal fitting, a reinforcing tab, or the like. The fixing member 7 includes a fixed piece portion 71 and a held piece portion 72 and has a substantially L shape. The fixed piece 71 is coupled by soldering when the connector 1 is fixed to the mounting surface 91 of the circuit board 9. The held piece 72 is sandwiched and held by the fixing member holding portion 61 of the housing 3. Accordingly, the fixing member 7 is coupled to the housing 3 and fixes the housing 3 to the mounting surface 91 of the circuit board 9.

  As shown in FIGS. 1 and 5, the counterpart cable connector 8 is a male connector provided with a plurality of female contact terminals (not shown). The mating member is not limited to a male connector, and may be another connector, a flexible substrate, a synthetic resin substrate, a paper base phenolic resin laminate, or the like. In that case, the shape of the insertion port 5 of the housing 3 is changed according to the member of the other party.

As a flexible substrate, a flexible printed circuit board (Flexible Printed Circuit; FPC), a flexible flat cable (Flexible Flat Cable; FFC), etc., which has flexibility and flexibility, a flat having a predetermined thickness and width. A substrate is mentioned.
Examples of the synthetic resin substrate include a glass epoxy resin substrate.

  The cable connector 8 includes a socket housing 80, a cable 89, a female contact terminal (not shown), and a lock arm 85.

  The socket housing 80 has a substantially rectangular parallelepiped shape, and includes an insertion portion 81 having a substantially rectangular parallelepiped shape on the front direction D5 side. The insertion portion 81 has a shape corresponding to the inside of the insertion port 5 of the connector 1 and can be inserted (inserted) into the insertion port 5.

  The female contact terminal (not shown) is electrically connected to the electric wire portion (not shown) of the cable 89 at its proximal end. The female contact terminal contacts the mating contact pin 25 of the contact 2 of the connector 1 and is electrically connected in a state where the cable connector 8 and the connector 1 are connected.

  The lock arm 85 includes a hook portion 86 extending in the front direction D5, a force point portion 87 extending in the rear direction D6, and a fulcrum portion 88 positioned between the hook portion 86 and the force point portion 87 and connected to the side wall of the socket housing 80. And comprising. The lock arm 85 is configured such that a hook portion 86 and a force point portion 87 are rotatable around a fulcrum portion 88. When the force point portion 87 is pressed inward in the lateral direction D34, the hook portion 86 opens outward in the lateral direction D34 with the fulcrum portion 88 as the center. The front end portion D5 of the hook portion 86 forms an engaging protrusion 86a that protrudes inward in the lateral direction D34.

  The connection between the connector 1 and the cable connector 8 is performed as follows. The insertion portion 81 of the socket housing 80 is inserted into the insertion port 5 of the connector 1 (in a state where the force point portion 87 is not pressed). In the process, the engaging protrusion 86a of the hook portion 86 hits the connector side engaging portion 62 of the housing 3 of the connector 1 and rides over the connector side engaging portion 62 in the lateral direction D34. After getting over, the hook portion 86 moves to the inside of the lateral direction D34 by the urging force directed to the inside of the lateral direction D34. The engaging protrusion 86 a of the hook portion 86 engages with the connector side engaging portion 62. Thereby, the connection between the connector 1 and the cable connector 8 is locked.

According to the present embodiment having the above configuration, for example, the following effects are produced.
In the present embodiment, as shown in FIG. 6, the housing 3 includes a cross-section covering portion 35 that covers the conductive cross section 94 of the hollow portion 93, a cross-section covering portion 35, and a mounting surface 91 and a contact 2. And an interposition part 36 provided so as to be interposed therebetween. Therefore, a sufficient creepage distance can be ensured between the conductive cross section 94 of the circuit board 9 and the contact 2.

  In the contact 2, as shown in FIGS. 6 and 7, the surface direction of the substrate-side contact pin 21 is bent with respect to the surface direction of the contact base 24. Therefore, the entire connector-mounted circuit board including the circuit board 9 and the connector 1 can be further reduced in height. Further, by bending in this way, a large contact area (solder area) between the terminal portion 22 and the electrode 92 can be secured, and the peeling strength (peel strength) between the terminal portion 22 and the electrode 92 can be increased. Can do.

  Moreover, as shown in FIG. 6, the board | substrate side contact pin 21 (terminal part 22) is spreading along the direction (D34-D56 plane) where the mounting surface 91 spreads. Therefore, a large contact area (solder area) between the terminal portion 22 and the electrode 92 can be secured, and the peeling strength (peel strength) between the terminal portion 22 and the electrode 92 can be increased.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be modified as appropriate.
For example, in the above-described embodiment, the punched-out portion 93 has an open shape, but is not limited thereto, and may have a closed shape.

  In the embodiment, the substrate-side contact pin 21 of the contact 2 has a distal end portion side and a base end portion side biased to the lower side D1 and a longitudinal center portion at the upper side in the portion excluding the base connecting portion 23. Although it has a substantially convex shape biased toward the direction D2, it is not limited thereto. FIG. 8 is a longitudinal sectional view (corresponding to FIG. 7) showing a contact 2A of a modified example. As shown in FIG. 8, the substrate-side contact pin 21A in the contact 2A of the modified example has a rectangular shape when viewed in the lateral direction D34.

DESCRIPTION OF SYMBOLS 1 Connector 2, 2A Contact 3 Housing 5 Insert 8 Cable connector 9 Circuit board 21,21A Board | substrate side contact pin 22 Terminal part 23 Base connection part 24 Contact base 28 Tongue piece 35 Cross section covering part 36 Interposition part 91 Mounting surface 92 Electrode 93 Bored part 94 Conductive cross section (cross section)

Claims (2)

Configured conductive member mainly and the conductive said counterbores vent further in comprising and the thickness direction counterbores vent portion insulated film is carefully hollowed in the thickness direction of the circuit board a circuit board provided on the outer surface of the member in the circuit board insulation treatment in cross section parts are not subjected to a connector mounted is disposed in said counterbores vent portion,
The insulating treatment film provided on the outer surface of the conductive member constituting the circuit board is provided with a printed wiring and a plurality of electrodes, and a part of the printed wiring is further covered with the insulating treatment film,
Comprising a plurality of contacts each electrically connected to and the plurality of the electrodes is composed of a conductive member, a housing for directly or indirectly holding a and a plurality of said contacts is constituted insulating member mainly, the ,
The housing includes a cross-section covering portion that is opposed to or in contact with the cross- section so as to cover the cross-section of the hollowed-out portion, and is continuous with the cross-section covering portion and includes the insulating film and the contact. An interposer provided to intervene in between. It said contact includes a contact base which is held in the housing, and a board-side contact pins to contact the linked and pre Symbol electrodes in said contact base, includes, formed from a plate-like member,
The connector according to claim 1, wherein a surface direction of the substrate-side contact pin is bent with respect to a surface direction of the contact base.

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