JPH0648181U - Surface mount connector device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a surface mount type connector that has a locking mechanism with a mating connector, to obtain connection strength with a printed circuit board at the same time by the locking member. [Structure] A device in which a lock member of a surface mount type connector is made of a metal material, and the metal lock member is soldered to a dummy pad of a printed circuit board.

Description

[Detailed description of the device]

[0001]

【Technical field】

 The present invention relates to a surface mount connector, and more particularly to a surface mount connector having a lock mechanism.

[0002]

[Prior art and its problems]

 SURFACE MOUNT TYPE connector (surface mount connector, hereinafter referred to as SMT connector) tends to be widely used as a type of connector for mounting electronic components such as IC chips and connectors on a printed circuit board. . This SMT connector has its contacts soldered directly to the conductive pads on the printed circuit board, and can reduce the mounting density (terminal spacing) compared to the through-hole type that allows holes to be formed in the printed circuit board. There is an advantage. This SMT connector, however, is inferior in connection strength to the through-hole type because it has a mechanical connection strength with the printed board by soldering the contact and the conductive pad. Therefore, conventionally, a dummy pad that does not participate in electrical connection is provided on the printed circuit board in addition to an ordinary conductive pad, and a part of the contact of the SMT connector is soldered to the dummy pad.

On the other hand, the connector comprises a male connector and a female connector which are connected to each other. The female and male connectors may be provided with a locking mechanism to maintain the connection. This lock mechanism is generally configured by providing one side of the male and female connectors with an elastically deformable lock leg, and providing the other side with a lock unevenness that engages with the lock leg. The lock member, the lock leg, and the lock unevenness of the lock mechanism have conventionally been formed integrally with the connector body made of synthetic resin. Also, for example, when the lock leg is made of a metal material and is joined to the connector body, the lock leg is provided independently of the dummy pad of the printed board. That is, the lock member does not contribute to the connection strength with the print substrate.

[0004]

[The purpose of the device]

 It is an object of the present invention to provide a SMT connector having a lock mechanism, and at the same time, to obtain a connection strength with a printed circuit board by the lock member.

[0005]

[Outline of the device]

 According to the present invention, when the lock member of the SMT connector is made of a metal material and the metal lock member is soldered to the dummy pad of the printed circuit board, the lock member can simultaneously obtain the connection strength with the printed circuit board. It was completed based on the idea that

That is, according to the present invention, in a surface mount connector that has a lock member for locking with a mating connector and is fixed on a printed circuit board, the lock member of the surface mount connector is made of a metal material. Is soldered to a dummy pad formed on the printed circuit board.

[0007]

【Example】

 The present invention will be described below with reference to the illustrated embodiments. FIGS. 1, 3 and 4 show a male SMT connector 10 having a metal locking member according to the present invention and a male print substrate P1 for fixing the same, and FIGS. 2 and 5 show the male SMT connector 10. The female SMT connector 20 to be connected and the female printed board P2 for fixing the same are shown. 6 and 7 show these connection states.

The male SMT connector 10 has a connector main body (insulator) 11 made of synthetic resin and a plurality of well-known contacts 12 held by the connector main body 11. A metal lock member 13, which is a feature of the present invention, is provided on both sides of the connector body 11. The metal lock member 13 is located in a recess 14 formed in the center of the side portion of the connector body 11 and extends toward the female SMT connector 20 to be connected. 16 and a press-fitting portion 17 inserted into the connector body 11. A lock hole 18 is formed in the elastic leg portion 15.

On the printed circuit board P1, a plurality of conductive pads P C to which the contacts 12 are to be soldered and a dummy pad PD to which the connecting portion 16 of the metal lock member 13 is to be soldered are formed. The conductive pad PC is electrically connected to a desired circuit by a known conductive means, but the dummy pad PD is not connected to an electric circuit.

Similar to the male SMT connector 10, the female SMT connector 20 has a connector main body (insulator) 21 made of synthetic resin and a plurality of well-known contacts 22 held by the connector main body 21. The connector main body 21 and the contact 22 are shaped so as to fit with each other with the connector main body 11 and the contact 12, and the contact 12 and the contact 22 are brought into conduction in the fitted state. The female SMT connector 20 is provided with a metallic connection strength member 23 at a position corresponding to the metallic lock member 13 of the male SMT connector 10. The metal connection strength member 23 is joined to the connector body 21 by the same means as the metal lock member 13. Further, the connector main body 21 is provided with a lock protrusion 24 that engages with the lock hole 18 of the metal lock member 13.

The printed circuit board P2 has the same configuration as the printed circuit board P1. That is, a conductive pad PC to which the contact 22 is connected and a dummy pad PD to which the metal connection strength member 23 is connected are formed on the surface thereof.

The above male SMT connector 10 and the printed circuit board P1 are connected by soldering the metal lock member 13 and the dummy pad PD, and the contact 12 and the conductive pad PC, respectively. The female SMT connector 20 and the printed circuit board P2 are connected by soldering the metal connection strength member 23 and the dummy pad PD, and the contact 22 and the conductive pad PC, respectively.

The soldering is performed by placing the solder paste on the conductive pad PC and the dummy pad PD, then placing the male SMT connector 10 or the female SMT connector 20 on the solder paste, and heating in the subsequent heating step. . When the soldering is completed, not only the contacts 12 and 22 and the conductive pad PC but also the metal lock member 13 and the dummy pad PD, and the metal connection strength member 23 and the dummy pad PD are soldered. Therefore, high connection strength with the printed circuit boards P1 and P2 can be obtained.

The male SMT connector 10 and the female SMT connector 20, which are respectively connected to the printed circuit board P1 and the printed circuit board P2 in this manner, are coupled as shown in FIGS. 6 and 7. At the time of this connection, the elastic leg portion 15 of the metal lock member 13 once rides on the lock protrusion 24 and bends outward, and when the lock hole 18 and the lock protrusion 24 match, the elastic leg portion 15 returns to the original position by elasticity. . As a result, the male SMT connector 10 and the female SMT connector 20 are locked by the engagement of the lock hole 18 and the lock protrusion 24.

As described above, according to the present invention, since the metal locking member 13 for locking the male SMT connector 10 and the female SMT connector 20 is soldered to the printed circuit board P1, a special connection strength member is provided. It is possible to increase the connection strength between the male SMT connector 10 and the printed board P1 without providing the. That is, the metal lock member 13 as a lock member can be used as a connection strength member between the male SMT connector 10 and the printed circuit board P1.

In the above embodiment, the lock protrusion 24 as a lock member on the female SMT connector 20 side is formed integrally with the connector body 21, and the member 23 serves as a connection strength member for connection with the female SMT connector 20P. Only working. However, also on the female SMT connector 20 side, this metal member 23 can be used as a lock member at the same time.

FIG. 8 shows an example thereof, and the metal lock member 23 ′ includes a lock protrusion 24 ′ corresponding to the lock protrusion 24. If the locking projection 24 in the above-described embodiment is eliminated and this metallic locking member 23 'is used instead of the member 23, the metallic locking member 23' can be given a function as a connection strength member. Like the metal lock member 13, the metal lock member 23 ′ is press-fitted into the connector body 21 along with the side surface portion 25 along the side surface of the connector body 21, the connection portion 26 along the lower surface of the connector body 21. And a lock projection 24 ′ is formed on the side surface portion 25. The connection portion 26 is soldered to the dummy pad PD of the printed circuit board P2.

[0018]

[Effect of device]

 As described above, in the surface mount connector of the present invention, the lock member for locking the mating connector is made of a metal material, and the metal lock member is soldered to the dummy pad of the printed board. Therefore, the connection strength with the printed circuit board can be simultaneously obtained by the lock member.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a surface mount connector according to the present invention before a male connector is connected to a printed circuit board.

FIG. 2 is a perspective view showing a state before a female connector connected to the male connector of FIG. 1 is connected to a printed circuit board.

3 is a cross-sectional view taken along the line AA of FIG.

4 is a cross-sectional view taken along the line BB of FIG.

5 is a cross-sectional view taken along the line CC of FIG.

6 is a side view showing a connection state of the male connector of FIG. 1 and the female connector of FIG.

FIG. 7 is a front view of the same.

FIG. 8 is a perspective view of a lock fitting according to another embodiment of the present invention.

[Explanation of symbols]

 10 Male Surface Mount Connector 11 Connector Body 12 Contact 13 23 'Metal Lock Member 14 Recess 15 Elastic Leg 16 16 Connection Portion 17 27 Press Fit Port 18 Lock Hole 20 Female Surface Mount Connector 21 Connector Body 22 Contact 23 Metal Connection Strength Member P1 P2 Printed circuit board PC Conductive pad PD Dummy pad

Claims (1)

[Scope of utility model registration request] 1. A lock member for locking a mating connector,
In a surface mount connector fixed on a printed circuit board, the lock member of the surface mount connector is made of a metal material, and the metal lock member is soldered to a dummy contact formed on the printed circuit board. And surface mount connector device.