JPH0679071U - Surface mount electrical connector - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a surface-mounting electrical connector that is easy to position, has a large holding force, and is easy to manufacture. A housing 2 that penetrates into an opening P1 of a circuit board P from above to a predetermined position has a flange portion 5 that is in contact with an upper surface of an edge portion of the opening P1 to define the predetermined position,
A plurality of contacts 3 that come into contact with the circuit portion P3 formed on the upper surface of the edge portion of the circuit board P at the predetermined position are planted in the housing 2, and the housing 2 is placed at the predetermined position. Fixing means 5 and 6 for fixing the housing 2 to the circuit board P.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a surface mount electrical connector.

[0002]

[Prior art]

 Surface mount electrical connectors are widely used. Such a connector has a plurality of contacts extending laterally from the lower part of the side surface of the housing, and when the connector is placed at a predetermined position on the circuit board, the above-mentioned contact is formed on the circuit portion formed on the surface of the circuit board. The contacts are brought into surface contact with each other and by soldering them, the connector is electrically connected to the circuit portion of the circuit board, and the circuit board holds the connector.

However, it is difficult to accurately arrange the connector at a predetermined position on the circuit board, and it is easy to shift the predetermined position until the solder connection. Further, after the solder connection, When an external force acts, this external force must be supported by the solder connection, and there is a problem that the connection may come off, and proposals have been made to address this.

First, in Japanese Patent Laid-Open No. 3-138876, a metal pin extending downward is provided on the bottom surface of a housing, and the metal pin is press-fitted into a positioning hole of a circuit board to maintain a predetermined position and fix the fixing strength. We are trying to improve.

Further, in JP-A-2-216767, a positioning boss similar to the metal pin of the above-mentioned JP-A-3-138876 is provided on the lower surface of the housing, or a cylindrical metal member capable of being caulked after press fitting. Metal pieces that can be provided or soldered or adhered to the upper surface of the circuit board are provided for positioning and fixing.

[0006]

[Problems to be solved by the device]

 However, the two known connectors described above still have common problems. First, in the above connector, the metal pins or bosses for positioning / fixing extend downward from the lower surface of the housing, so when mounting the connector, the metal pin etc. is the most difficult to see. It is difficult to work. Secondly, the metal pins and the like are made of a material different from that of the housing, so that the number of parts increases and it takes time to integrally manufacture the housing with the housing.

Furthermore, thirdly, the metal pins and the like are point-supported on the surface of the circuit board, and when a moment load is applied to the connector, depending on the direction of the moment, the metal pin or the like may not be able to completely oppose the moment. There is a risk that it will rattle. For example, in the case of two metal pins, it becomes weakest when subjected to a moment load around the line connecting the two contact points with the circuit board.

An object of the present invention is to solve the problems of the conventional connector, and to provide a surface-mounting electrical connector that is easy to position, has a large holding force, and is easy to manufacture.

[0009]

[Means for Solving the Problems]

 According to the present invention, the above object is to provide a housing, which penetrates into an opening of a circuit board from above to a predetermined position, with a flange portion which comes into contact with an upper surface of an edge portion of the opening to define the predetermined position. However, a plurality of contacts that come into contact with the circuit portion formed on the upper surface of the edge portion of the circuit board at the predetermined position are implanted in the housing, and the housing is in the process of penetrating the opening. At times, it elastically contracts due to contact with the edge of the opening, and when the penetration to the predetermined position is completed, it is released from the contact with the edge and elastically recovers to the original size and contacts the lower surface of the circuit board. This is achieved by having a lock portion for elastically pinching and holding the circuit board from above and below together with the flange portion.

[0010]

The electrical connector for surface mounting of the present invention having the above-mentioned structure is mounted in the following manner.

Align the housing with the opening in the circuit board. At the time of alignment, the side surface of the housing may be aligned with the edge of the opening, so that it can be seen laterally, and the work is extremely easy.

The housing is directly inserted into the opening. During the penetration, the lock part elastically contracts due to contact with the edge of the opening.

When the penetration is continued, the contactor comes into contact with a predetermined circuit portion. Further, when the housing is pushed in slightly strongly, the flange portion is brought into contact with the upper surface of the edge portion of the circuit board to be set at a predetermined position, and the lock portion is released from the contact with the edge portion of the opening. It becomes free and elastically recovers to the original size and comes into contact with the lower surface of the circuit board. Thus, the flange portion and the lock portion work together to elastically hold the circuit board from above and below.

After that, the contact and the circuit portion which are in contact with each other are soldered.

[0015]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of an electric connector for surface mounting according to this embodiment, FIG. 2 is a plan view thereof, and FIG. 3 is a sectional view taken along line III-III in FIG.

In the figure, a connector 1 is formed by arranging a plurality of contacts 3 on both sides of a housing 2 made of an insulating material. The contactor 3 projects from the upper surface of the housing 2, is bent in an inverted U shape, and has a tip portion 3A extending horizontally. In the housing 2, the contactor 3 projects in a recess 2A opened below the housing 2 so as to be coupled with a contactor (not shown) of a mating connector (see FIG. 3). .

The housing 2 has a main body portion 4, and a flange portion 5 and a lock portion 6 which form a fixing means. The main body portion 4 has a substantially rectangular parallelepiped shape, and the flange portion 5 is formed so as to project in the width direction on the upper surfaces of the longitudinal end portions of the main body portion 4, and the lock portion 6 is located below It is formed as a lock arm extending upward from the. The lock portion 6 has an arm portion 6A extending substantially parallel to the end face of the main body portion 4 and a locking portion 6B which is inclined at its tip end so as to slightly expand outward.

The housing 2 has the following relationship with the size of the rectangular opening P1 formed in the circuit board P on which the connector 1 is to be mounted.

The width of the main body portion 4 of the housing 2 is substantially equal to the width dimension A of the opening P1 of the circuit board P. Therefore, the flange portion 5 projects in the width direction on both sides by a predetermined width A1.

On the other hand, with respect to the longitudinal dimension of the housing 2, the longitudinal dimension between the arm portions 6A, 6A of the two lock portions 6, 6 at both ends is substantially equal to the longitudinal dimension B of the opening P1. ing. Therefore, the tip of the locking portion 6B which is inclined outward in the longitudinal direction from the arm portion 6A is located outward in the longitudinal direction by ΔB from the dimension B in the longitudinal direction.

A guide groove 7 is formed on one side surface of the main body portion 4 of the housing 2 so that the mounting direction is correct, and the protrusion P2 corresponding to the circuit board P is formed here. Will be guided by. Further, P3 is a circuit portion which is provided on the circuit board P and to which the tips 3A of the respective contactors 3 are to be respectively connected.

The connector of this embodiment is mounted as follows.

First, the connector 1 is brought to a position directly above the opening P 1 of the circuit board P and is inserted into the opening P 1. The penetration is performed while being guided by the side surface of the housing and the side surface of the arm portion 6A of the lock portion 6.

When the penetration progresses to the intermediate position, the edge portion of the opening P1 comes into contact with the locking portion 6B of the lock portion 6, and the lock portion 6 receives the contact force and moves inward by the dimension ΔB. Penetration is performed while elastically deforming.

When the penetration is completed up to a predetermined position, the tip portion 3A of the contactor 3 comes into contact with the circuit portion P3. When it is pushed into the housing 2 slightly more strongly, the flange portion 5 comes into contact with the edge portion of the opening P1 of the circuit board P, and the tip end of the locking portion 6B of the lock portion 6 comes off from the edge portion of the opening P1. As a result, the lock portion 6 becomes free and is restored to the original size, and the tip of the locking portion 6B comes into contact with the lower surface of the circuit board P. Thus, the tip portion 3A of the contactor 3 contacts the circuit portion P3, and the circuit board P is elastically pinched and held between the flange portion 5 and the locking portion 6B of the lock portion 6.

Thereafter, solder connection is performed between the contact 3 and the circuit portion P3.

The present invention can be modified other than the illustrated embodiment. For example, the fixing means is not limited only to the flange portion and the lock portion, and in FIG. 1, the flange portion 5 is made slightly larger and a screw hole 5A is formed in the edge portion thereof, and the screw hole 5A and the circuit board P correspond to each other. It is also possible to use a screw that penetrates through the hole P4 provided as above.

[0029]

[Effect of device]

 The surface mount electrical connector of the present invention is configured such that the housing body is inserted into the opening of the circuit board for positioning, and is retained on the circuit board by the flange portion and the lock portion provided integrally with the housing body portion. As a result, the positioning is simple and the work efficiency is improved, and the holding area is increased to improve the holding force, so that even if an external force is applied, no load is applied to the solder connection part. Moreover, the flange portion and the lock portion can be molded integrally with the housing, which is advantageous in terms of manufacturing.

[Brief description of drawings]

FIG. 1 is a perspective view of an electric connector for surface mounting according to an embodiment of the present invention.

FIG. 2 is a plan view of the connector of FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

[Explanation of symbols]

 1 Electrical Connector 2 Housing 3 Contact 5 Flange Part (Fixing Means) 6 Lock Part (Fixing Means) P Circuit Board P1 Open Hole

Claims (2)

[Scope of utility model registration request] 1. A housing, which penetrates into an opening of a circuit board from above to a predetermined position, has a flange portion which comes into contact with an upper surface of an edge portion of the opening to define the predetermined position, and the housing includes A plurality of contacts that contact the circuit portion formed on the upper surface of the edge portion of the circuit board at the predetermined position are implanted, and the housing fixes the housing to the circuit board at the predetermined position. Electrical connector for surface mounting, which has a fixing means for. 2. The fixing means elastically contracts due to contact with the edge of the opening when the housing is inserted into the opening when the housing is inserted, and when the housing is completely inserted into the opening, 7. A lock portion which is released from abutment and elastically recovers to its original size, abuts against the lower surface of the circuit board and, together with the flange portion, elastically clamps and holds the circuit board from above and below. The electrical connector for surface mounting according to 1.