JP2017076533A - connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector including a circuit board on which a terminal pad is formed at the front end, and protecting the contact of a mating contact from the front edge of the circuit board and the front edge of the terminal pad.SOLUTION: At the front end of a circuit board 12, a front end protective member 14 is provided. The front end protective member 14 is made of resin, and covering the front end face 122 of the circuit board 12. Furthermore, this front end protective member 14 wraps around the upper and lower surfaces of a circuit board 13, and covers the upper and lower surfaces up to the nearest position of the terminal pad 13. This front end protective member 14 has a shape getting thicker than the terminal pad 13 in the thickness direction of the circuit board 12. Furthermore, this front end protective member 14 has a forward taper 141 in the thickness direction of the circuit board 12. This front end protective member 14 is extending perpendicularly to the page of fig.2, over the entire width of the circuit board 12.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a connector of a type provided with a circuit board.

  There is known a connector of a type that includes a circuit board on which an electronic circuit is mounted and in which a terminal pad formed on the front end portion of the circuit board is brought into contact with a contact of a mating connector (for example, see Patent Document 1).

  When this connector is mated with the mating connector, the mating connector contacts rub the front edge of the circuit board and the front edge of the terminal pad during the mating. For this reason, the contact of the mating connector may be damaged by the front edge of the circuit board or the front end of the terminal pad, and the contact may be peeled off.

JP 2013-182299 A

  In view of the above circumstances, an object of the present invention is to provide a connector having a structure for protecting a contact of a mating connector from a front end edge of a circuit board and a front end edge of a terminal pad.

The connector of the present invention that achieves the above-mentioned object is a connector comprising a circuit board in which a terminal pad that contacts a contact of a mating connector and is electrically connected to the contact is formed at the front end,
Covering the front end surface of the circuit board and covering the surface of the circuit board on which the terminal pads are formed up to a position closest to the terminal pad or a position overlapping a part of the terminal pad, and in the thickness direction of the circuit board This is a resin body that rises thicker than the thickness of the connector, contacts the contact of the mating connector when mated with the mating connector, elastically deforms the contact, the front edge of the circuit board and the front end of the terminal pad by the contact A front end protection member for avoiding contact with the edge is provided.

  The connector of the present invention includes the front end protection member having the above shape. For this reason, the contact of the contact of the mating connector on the front end edge of the circuit board and the front end edge of the terminal pad during fitting with the mating connector is avoided. Therefore, the occurrence of contact damage caused by the contact is prevented.

  Here, in the connector of the present invention, it is preferable that the front end protection member has a taper portion that is formed to taper forward in the thickness direction of the circuit board and the contact of the mating connector slides.

  When the front end protection member has the tapered portion, the elastic deformation for avoiding the contact of the mating contact with the front end edge of the circuit board or the front end edge of the terminal pad becomes smooth.

  According to the present invention described above, a connector is realized in which the contact of the mating connector is protected from the front end edge of the circuit board and the front end edge of the terminal pad.

It is the side view (A) and longitudinal cross-sectional view (B) which showed the connector as one Embodiment of this invention, and the other connector fitted with the connector in the direction of fitting. It is an expanded sectional view of the part of circle R1, R2 shown in FIG.1 (B).

  Embodiments of the present invention will be described below.

  FIG. 1 is a side view (A) and a longitudinal sectional view (B) showing a connector as an embodiment of the present invention and a mating connector fitted to the connector in a fitting direction.

  In FIG. 1, the connector shown in FIG. 1B is a connector as one embodiment of the present invention. Here, this connector is referred to as a first connector 10. Further, the connector shown in FIG. 1A is a mating connector that fits with the first connector 10 and is referred to as a second connector 20 here.

  A locking projection 111 is formed on the upper surface of the locking arm 112 of the housing 11 of the first connector 10. On the other hand, a locking hole 211 is formed in the housing 21 of the second connector 20. When the first connector 10 and the second connector 20 are fitted, the locking projection 111 enters the locking hole 211 and is prevented from coming off.

  The first connector 10 includes a circuit board 12. A plurality of terminal pads 13 (see FIG. 2) arranged in a direction perpendicular to the paper surface of FIG. 1 are formed on the front end portion 121 of the circuit board 12. The first connector 10 is connected with a cable 30 formed of a bundle of a plurality of electric wires. The core wire 32 at the tip of the electric wire 31 in the cable 30 is soldered to the circuit board 12.

  Further, the first connector 10 is provided with a front end protection member 14 at the front end of the circuit board 12. Details of the front end protection member 14 will be described later.

  On the other hand, the second contact 20 includes a metal shell 22 and a contact 23 in addition to the housing 21 described above. The metal shell 22 covers the housing 21 and serves as a shield. Further, the contact 23 is in electrical connection with the terminal pad 13 (see FIG. 2) on the circuit board 12 of the first connector 10. The second connector 20 is mounted on the circuit board 40.

  FIG. 2 is an enlarged cross-sectional view of a portion of circles R1 and R2 shown in FIG. FIG. 2 shows the state of fitting of the first connector 10 and the second connector 20 shown in FIG. 1 in order.

  FIG. 2A shows a state in which the front end 121 of the circuit board 12 has approached the contact 23 of the second connector 20 at the initial stage of fitting.

  Terminal pads 13 are formed on both sides of the front end 121 of the circuit board 12. The terminal pad 13 is in electrical connection with the contact 23 of the second connector 20.

  A front end protection member 14 is provided at the front end of the circuit board 12. The front end protection member 14 is made of resin and covers the front end surface 122 of the circuit board 12. Further, the front end protection member 14 extends to the upper and lower surfaces on which the terminal pads 13 of the circuit board 13 are formed, and covers the upper and lower surfaces to the position closest to the terminal pads 13. Alternatively, the front end protection member 14 may cover the upper and lower surfaces of the circuit board 12 up to a position where it overlaps a part of the terminal pad 13. The front end protection member 14 has a shape that rises thicker than the terminal pad 13 in the thickness direction of the circuit board 12. Further, in the present embodiment, the front end protection member 14 has a tapered portion 141 that is formed to taper forward in the thickness direction of the circuit board 12 toward the front. The front end protection member 14 extends in the direction perpendicular to the paper surface of FIG. 2 while maintaining the cross-sectional shape shown in FIG. 2A over the entire width of the circuit board 12 or the region where the terminal pads 13 are arranged. ing.

    On the other hand, the contact 23 of the second connector 20 has a shape that elastically sandwiches the circuit board 12 of the first connector 10 from above and below.

  FIG. 2 (B) shows a state immediately after the contact 23 is brought into contact with the circuit board 12 as the fitting proceeds more than in FIG. 2 (A). FIG. 2C shows a state when the fitting is completed.

  2B and 2C, the contact 23 is shown to bite into the circuit board 22 or the like. This is because the contact 23 is shown in the shape before being elastically deformed. Actually, the contact 23 is elastically deformed to a state where it is in contact with the front end protection member 14, the terminal pad 13, and the like.

  Between the state shown in FIG. 2A and the state shown in FIG. 2B when the first connector 10 and the second connector 20 are reached, the contact 23 behaves as follows. That is, the contact 23 contacts the tapered portion 141 of the front end protection member 14 and slides on the tapered portion 141. And the taper part 141 guides the contact 23 as fitting progresses. When the contact 23 gets over the tapered portion 141, the terminal pad 13 to which the contact 23 is to contact is provided. The contact 23 is in contact with the terminal pad 13 while being elastically deformed while its elastic deformation is slightly relaxed. The front end protection member 14 covers the front end 121 of the circuit board 12 up to a position closest to the terminal pad 13 or a position overlapping a part of the terminal pad 13. Therefore, the contact 23 contacts the surface of the terminal pad 13 without contacting the front end edge 123 of the circuit board 12 or the front end edge 131 of the terminal pad 13. Then, after the state of FIG. 2 (B), the contact 23 advances to the fully fitted position shown in FIG. 2 (C) while sliding with the surface of the terminal pad 13. The contact 23 at the time of fitting is elastically deformed by the amount shown in FIG. As a result, the contact 23 comes into contact with the terminal pad 13 with an intended contact pressure, and electrical conduction therebetween is realized.

  When the first connector 10 is removed from the second connector 20, the process proceeds in the reverse order from the above in the order from FIG. 2 (C) to FIG. 2 (A). Even during this extraction, the front end edge 131 of the terminal pad 13 and the front end edge 123 of the circuit board 12 are protected by the front end protection member 14 so as to avoid contact with the contact 23.

DESCRIPTION OF SYMBOLS 10 1st connector 11 Housing 111 Locking protrusion 12 Circuit board 121 Front end part 122 Front end surface 123 Front end edge 13 Terminal pad 131 Front end edge 14 Front end protection member 141 Tapered part 20 2nd connector 21 Housing 211 Locking hole 22 Metal shell 23 Contact 30 Cable 31 Electric wire 32 Core wire 40 Circuit board

Claims (2)

A connector comprising a circuit board having a terminal pad formed on a front end portion thereof, which contacts a contact of a mating connector and is electrically connected to the contact,
Covering the front end surface of the circuit board and covering the surface of the circuit board on which the terminal pads are formed up to a position immediately adjacent to the terminal pad or a position overlapping a part of the terminal pad, and the thickness of the circuit board A resin body raised in a direction thicker than the thickness of the terminal pad, which contacts the contact of the mating connector when fitted with the mating connector, elastically deforms the contact, and the front edge of the circuit board by the contact And a front end protection member for avoiding contact with the front end edge of the terminal pad.   The connector according to claim 1, wherein the front end protection member has a taper portion formed so as to taper forward in a thickness direction of the circuit board, and a contact of a mating connector slides.

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