JPH08315931A - Structure for mounting electrical connector on circuit board - Google Patents

Abstract

PURPOSE: To provide an electrical connector mounting structure both firmly fixed to a circuit board, and easy to manufacture by extending an insertion leg section and a contact surface leg section orthogonal therewith from an outer plate member fixed to a housing having an implanted contactor. CONSTITUTION: A connector 10 fitted with a shield plate 11 having a receptacle slot 12 with an implanted contactor 14, and another connector 20 with a recess 23 having a terminal board 24 with a contactor 25 implanted are coupled and connected to each other. Also, the electrical connector so formed is externally provided with an outer member 22 as a shield case. The member 22 is formed out of a blanked and bent metal plate, and secured to a housing 21 with screws via holes 27 and 31. Also, an insertion leg section 34 extended from the side and lower section thereof is inserted in the mounting hole of a circuit board (not shown herein), thereby mounting the connector 20 on the board. Furthermore, a contact surface leg section 35 is extended orthogonally from the section 34 for contact with the upper surface of the board. In this case, a slit 34A is preferably formed on one of the sections 34 and 35, and the other is made to pass through the slit 34A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting an electric connector on a circuit board.

[0002]

2. Description of the Related Art As a mounting structure for this type of electrical connector, there is one disclosed in Japanese Utility Model Laid-Open No. 3-131074. As shown in FIG. 5 of the accompanying drawings, this known electrical connector is referred to as a modular jack, and an insertion hole 52 for inserting a mating plug is formed in a central portion of a housing 51 made of an insulating material. And the insertion hole 52
A plurality of contact elements 53 are planted so as to face the upper parts thereof, and the lower end portions of the contact elements 53 project downward from the lower surface of the housing 51. A shield case 54 is fitted in the housing 51, and a mounting leg 55 extends downward from the lower end of the shield case 54. A bent portion 55A that is bent in a V shape is formed at an intermediate portion of the mounting leg 55.

When using such an electrical connector,
The lower end of the contactor 53 is inserted into an insertion hole (not shown) formed in the corresponding circuit portion of the circuit board P, and the mounting leg 55 is inserted into the mounting hole P1. The contactor 53 is connected to the lower surface of the circuit board by soldering or the like, and the mounting leg 55 is fixed to the circuit board in the mounting hole P1 by the elastic force when the bent portion 55A is press-fitted.
Further, the mounting leg 55 may be further fixed to the lower surface of the circuit board by soldering or the like.

Thus, the electric connector having such a mounting leg plays a role of grounding the mounting leg and fixing the electric connector to the circuit board.

The mounting leg of this type is not limited to the above-mentioned modular jack, but may be applied to other electric connectors.

[0006]

However, in the mounting leg 55 of the above-mentioned known electric connector, the bent portion 55 is used.
Although it has A, there is a problem that the mounting leg 55 is made of a relatively thin metal plate and is weak against the force in the plate thickness direction.

In FIG. 5, when an external force is applied to the connector in the lateral direction, a moment acts on the mounting leg 55 in the plate thickness direction, damaging the solder portion of the mounting leg, and as a result, the external force is applied to the contact 53. It may cause a connection failure with the circuit board.

The present invention solves the above problem, and even if the mounting legs formed of a metal plate are firmly fixed to the circuit board, the electric connector to the circuit board can be easily manufactured. The purpose is to provide a mounting structure.

[0009]

According to the present invention, the above object is to provide at least a part of the outer surface of the housing of an electric connector in which contacts are embedded in a housing made of an insulating material and mounted on a circuit board. An outer plate member formed by punching and bending a metal plate is fixed, and a leg portion for fixing or grounding the connector to the circuit board is provided extending from the outer plate member. And an insertion leg portion that is inserted into a mounting hole formed in the circuit board, and a contact surface leg portion that extends in a direction perpendicular to the extending direction of the insertion leg portion and is in contact with the upper surface of the circuit board. It is achieved by

[0010]

In the present invention having such a structure, the insertion leg portion is inserted into the mounting hole formed in the circuit board and fixed on the lower surface of the circuit board by soldering or the like. On the other hand, the contact surface leg is in contact with the upper surface of the circuit board and is fixed to the circuit board by soldering or the like. Thus, according to the present invention, since the two legs are fixed to the circuit board in two directions at right angles, it is possible to sufficiently deal with the force applied to the connector from any direction.

In the present invention, when the insertion leg portion and the contact surface leg portion are intersected by the slit, the solder flows into the contact portion to be bonded to each other and the strength thereof is further enhanced.

[0012]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4 of the accompanying drawings.

In FIG. 1, reference numerals 10 and 20 are a pair of electrical connectors connected to each other. A fitting projection is formed on the front part of the housing made of the insulating material of one of the connectors 10, and the fitting projection is provided with a shield plate 11 bent up and down in a U-shape. A receiving slot 12 is bored in the front surface of the shield plate 11, and a receiving groove 13 having substantially the same shape as the receiving slot 12 is formed in the housing inside thereof, and a contactor 14 is formed on the upper and lower inner surfaces of the receiving groove 13. Are arranged.

Both sides of the shield plate 11 are open, and locking arms 15 and 15 made of a metal plate are arranged therein. One end of the locking arm 15 is supported inside the housing and extends in the shape of a cantilever to the vicinity of the front surface of the shield plate 11. Therefore, the free end, which is shown in FIG. 1, can elastically bend in the plate thickness direction of the locking arm 15.

A locking projection 16 is formed on the outer surface (one surface) of the plate-shaped locking arm 15 to form a locking mechanism for locking with a mating connector 20 described later.

A window portion 18 is formed on a side portion of a case made of an insulating material of the connector 10, and a button member 19 is housed therein so as to partially project. The button member 1
By pushing 9 inward of the case, the locking arm 1
5 is elastically deformed in the same direction.

The other connector 20 has a housing 21 made of an insulating material, and a molded case 22 as an outer plate member fitted to the front portion of the housing 21.

On the front surface of the housing 21, there is formed a recess 23 for receiving the fitting projection to which the shield plate 11 of the one connector 10 is fitted, and in the recess 23, the fitting projection is formed. A terminal plate 24 made of an insulating material is provided so as to fit in the receiving groove 13 formed in. The terminal board 24
On the upper and lower surfaces, the plurality of contacts 14 of the one connector
A contact 25 as a counterpart connected to is provided at the corresponding position. Further, on the front surface of the housing 21,
Slots 26, 26 for receiving a part of the shield case 22 are formed on both sides of the recess 23.
The holes 27, 27 formed vertically through the side portion of the housing 21 are for inserting screws (not shown) for attaching the other connector 20 to a circuit board or the like (not shown). is there.

The shield case 22 is formed by punching and bending a metal plate, and has a substantially cylindrical shape with front and rear openings. On the front surface of the shield case 22, there is formed an opening 28 through which the fitting protrusion of the shield plate 11 of the one connector 10 is inserted. A part of the bottom plate portion 29 of the shield case 22 extends rearward, and a tongue piece 30 that is partly cut and bent to be bent inward is provided in the bottom plate portion 29 of the shield plate 22 of the one connector 10. When the fitting protrusion to which is fitted penetrates, it comes into contact with the tongue piece 30. In addition, a hole 3 is formed on the upper surface of the shield case 22.
1 and 31 are provided so that when the shield case 22 is fitted in the housing 21, screws penetrate the holes 27 and 27 of the housing through the holes 31 and 31. .

At the lower end of the side wall portion 32 of the shield case 22, leg portions 33, 34 for insertion into a circuit board (not shown) are provided.
Is provided so as to extend downward. The rear insertion leg portion 33 simply extends in a pin shape, but the front insertion leg portion 34 has a slit 34A extending in the vertical direction, and the contact surface extending from the bottom plate portion 29 in the horizontal direction. The leg portion 35 projects outward from the slit 34A, and the insertion leg portion 34 and the contact surface leg portion 35 cross each other in a cross shape when viewed from the front.

The insertion leg portion 34 and the contact surface leg portion 35 will be described in more detail with reference to FIG. In FIG. 2, the insertion leg portion 34 extends downward from the side wall portion 32 of the shield case, and the corner portion of the tip (lower end) is rounded so that it can be easily inserted into the mounting hole of the circuit board. Insertion leg 3
4 has a slit 34A extending vertically,
The slit 34A extends to a position above the bottom plate portion 29, and the lower end divides the insert leg portion 34 with a narrow slit 34B at the lower end. Further, the slit 34A has a step portion 34C at the position of the bottom plate portion 29, and a portion above the bottom plate portion 29 is slightly narrower than a portion below. Further, the side wall portion 32 is provided on both sides of the insertion leg portion 34.
The slit portion 34D is formed in the slit 3
Together with the portion above the bottom plate portion 29 of 4A, the elasticity of the insertion leg portion 34 is made sufficient.

The contact surface leg portion 35 extends laterally from the bottom plate portion 29, and the groove 35 is formed in the engaging portion with the insertion leg portion 34.
A is formed. The width of the groove 35A is the same as the insertion leg 3
It corresponds to a plate thickness of 4.

As shown in FIG. 1, the shield case 22 is bent inwardly in a U shape between the side wall portion 32 and the side end of the opening 28, and the insertion portion 36 and the receiving portion 37 are formed. And form. The receiving portion is formed with a locking recess 39 for locking the locking projection 16 provided on the locking arm 15 of the one connector 10 described above. Thus, when the connectors 10 and 20 are fitted to each other, the locking projection 16 of the locking arm 15 that enters while causing the elastic bending is recessed into the locking recess 39, and the elastic bending is released, so that both connectors are connected. They are locked together and are prevented from coming off. Both connectors 10,
When separating the connector 20, the button member 19 is pushed to cause the elastic engagement of the locking arm 15 again, and the locking projection 16 is pulled out from the locking recess 39, so that the connectors 10 and 20 are separated from each other. It

Next, with respect to the electrical connector of this embodiment having such a structure, a method of making the mounting leg portion and the contact surface leg portion and a mounting procedure on the circuit board will be described below.

As shown in FIGS. 3A to 3D, the side wall portion 32 of the shield case 22 is formed by bending the upper plate portion.

First, as shown in FIG. 3A, the insertion leg portion 34 having the above-mentioned slit 34A formed at the end portion of the upper plate portion.
And the contact surface leg portion 35 is formed on the bottom plate portion 29 in advance.

Next, the upper plate portion is bent downward at a predetermined position as shown in FIG. 3B to form a side wall portion 32.

When the bending for forming the side wall portion 32 progresses, the slit 3 of the insertion leg portion 34 is formed as shown in FIG. 3 (C).
The contact surface leg portion 35 enters the lower portion of 4A and starts to protrude from the slit 34A.

Further, the above-mentioned bending molding proceeds, and the side wall portion 32 is formed.
Is at a right angle to the top plate and the bottom plate 29, as shown in FIG.
As shown in (D), the groove 35A formed in the base portion of the contact surface leg portion 35 fits into the step portion 34C of the insertion leg portion 34. At that time, since the insertion leg portion 34 is opened in a groove shape to the lower end by the slit 34A and the narrow slit 34B, the insertion leg portion 34 is momentarily opened slightly to the groove 35A of the contact surface leg portion 35. The step portion 34C of the insertion leg portion 34 can be fitted. Thus, the mounting leg portion 34 and the contact surface leg portion 35 reinforce each other by the elastic force when they are fitted. It goes without saying that, conversely, a slit may be formed in the contact surface leg portion 35, and the insertion leg portion may enter and fit into the slit.

The shield case 22 having the insertion leg portion 34 and the contact surface leg portion 35 thus formed is fitted to the housing 21 in which the contacts are already implanted as shown in FIG. After being formed, it is attached to a circuit board.

As shown in FIG. 4, mounting holes P1 and P2 for the insertion leg portions 33 and 34 are formed in the circuit board P, and the insertion leg portions 33 and 34 are respectively formed in the mounting holes P1 and P2. Is inserted. When the insertion leg portions 33 and 34 are inserted to the predetermined positions, the lower surface of the contact surface leg portion 35 comes into contact with the upper surface of the circuit board P. In this state, the mounting legs 33, 34 are fixed to the circuit board P on the lower surface side of the circuit board P by solder W or the like, and the contact surface legs 35 are fixed on the upper surface side of the circuit board P by solder W or the like. To be done. Thus, according to the present invention, the legs are fixed to the circuit board on both the upper and lower sides of the circuit board, and as the legs extending in two directions perpendicular to each other, the mounting is strong. Especially the contact surface leg 35
Has a large effect since it is in contact with the circuit board over a relatively large area.

In this embodiment, the insertion leg portion and the contact surface leg portion are integrally provided in the shield case, but the present invention is not limited to this, and any other outer plate member can be attached to the connector housing. It can be easily provided even in the form. Also, the type of connector is not limited.

[0033]

As described above, according to the present invention, the outer plate member is attached to the housing of the connector, and the outer plate member is provided with the insertion leg portion and the contact surface leg portion extending in the direction perpendicular to each other. Since the connector is attached to the circuit board in two directions by the above-mentioned two legs and on the upper and lower surfaces of the circuit board, the attachment strength is greatly improved, and even if an external force is applied to the connector, the attachment state is hardly affected. It is possible to obtain an effect that the connection of the contactor to the circuit board does not cause any trouble.

[Brief description of drawings]

FIG. 1 is a perspective view of a connector having a mounting structure according to an embodiment of the present invention.

2 is an enlarged perspective view showing a leg portion of the connector of FIG. 1. FIG.

3 is a perspective view showing a manufacturing process of the leg portion of FIG. 2. FIG.

FIG. 4 is a partially cutaway perspective view showing how the legs of FIG. 2 are attached to a circuit board.

FIG. 5 is a front view of an electric connector having a conventional mounting structure.

[Explanation of symbols]

 21 Housing 22 Shield Case (Outer Plate Member) 25 Contact 34 Insertion Leg (Leg) 34A Slit 35 Contact Face Leg (Leg)

Claims (4)

[Claims] 1. An outer plate member formed by punching and bending a metal plate on at least a part of an outer surface of the housing of an electric connector, in which a contact is planted in a housing made of an insulating material and mounted on a circuit board. Is fixed, and the leg portion for fixing or grounding the connector to the circuit board is provided extending from the outer plate member, the leg portion is
An insertion leg portion to be inserted into a mounting hole formed on the circuit board,
And a contact surface leg portion that extends in a direction perpendicular to the extending direction of the insertion leg portion and contacts the upper surface of the circuit board. 2. The structure for mounting an electrical connector on a circuit board according to claim 1, wherein a slit is formed in one of the insertion leg and the contact surface leg and the other penetrates the slit. 3. The mounting structure for an electric connector to a circuit board according to claim 2, wherein the insertion leg portion and the contact surface leg portion are in contact with each other at an inner edge of the slit. 4. The structure for mounting an electric connector on a circuit board according to claim 1, wherein the outer plate member is a shield case.