JP2008152991A - Surface mounting connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surface mounting connector whereby the number of components and assembling man-hours are reduced. <P>SOLUTION: A protrusion 2a protruding toward a printed board 3 is provided on the side of the lead terminal 2 of this surface mounting connector 1 soldered to the pattern of the printed board 3, and the protrusion 2a is formed to get engaged with a depression 3a or a hole formed in the printed board 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a surface mount connector, and more particularly, to a means for increasing its fixing strength.

  Conventionally, in order to connect a circuit of a printed circuit board to another unit by a cable, a surface mount connector that is surface mounted on the printed circuit board has been used. Examples of such a conventional surface mount connector are shown in FIGS. 4 is a perspective view of a conventional surface mount connector mounted on a printed circuit board as viewed from the rear, and FIG. 5 is a perspective view of the same surface mount connector mounted on a printed circuit board as viewed from the front.

  The main body of the surface mount connector 4 shown in the figure is generally made of resin, and metal lead terminals 4b, 4b... Are fixed so as to be integrated with the main body by insert molding or the like. The surface mount connector 4 is positioned on the printed circuit board 3, and the lead terminals 4 b, 4 b... Are soldered to the conductor pattern of the printed circuit board 3.

  As shown in FIG. 5, cable connection pins 4 a, 4 a... Are arranged and fixed to the surface mount connector 4, and a cable-side connector is fitted thereto. Since force is applied to the surface mount connector 4 when the cable side connector is inserted into and removed from the surface mount connector 4, sufficient fixing force cannot be obtained simply by soldering the thin lead terminals 4 b, 4 b. Therefore, as shown in FIGS. 4 and 5, L-shaped reinforcing plates 5 and 5 fixed to the main body of the surface mount connector 4 are soldered to a wide portion of the conductor pattern of the printed circuit board 3.

In the surface mount connector disclosed in Japanese Patent Application Laid-Open No. 6-60066, an L-shaped or flat reinforcing plate fixed to the main body is soldered to a wide portion of the conductor pattern of the printed board.
Japanese Utility Model Publication No. 6-60066, paragraphs 0019 to 0024 and FIGS.

  Since the conventional surface mount connector described above is fixed to the printed circuit board using a reinforcing plate, there is a problem that the number of parts and the number of assembly steps increase.

  Further, since a wide conductor pattern for mounting is provided on the printed circuit board, there is a problem that the area on which the printed circuit board components and the conductor pattern can be arranged is narrowed and high-density mounting is impossible.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a surface mount connector in which the number of parts and the number of assembly steps are reduced. Another object of the present invention is to provide a surface mount connector that enables high-density mounting.

  The surface mount connector according to the present invention is provided with a protrusion protruding toward the printed circuit board on the surface soldered to the printed circuit board pattern of the lead terminal, and the protrusion is fitted into a recess or hole formed in the printed circuit board. .

  In the surface mount connector, the protrusion is provided on all lead terminals.

  Further, in the same surface mount connector, the lead terminals having the protrusions are arranged so that the lead terminals having no protrusions are interposed therebetween.

  In each of the surface mount connectors, the protrusion is formed by cutting and raising.

  According to the surface mount connector of the present invention, the number of parts and assembly man-hours are reduced, and high-density mounting is possible.

  Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view showing a portion of a surface mount connector according to an embodiment of the present invention, FIG. 2 is a side view for explaining a state of mounting the same surface mount connector on a printed circuit board, and FIG. 3 is a diagram of the same surface mount connector. It is a perspective view for demonstrating the mounting state to a printed circuit board.

  The main body of the surface mount connector 1 shown in the figure is made of resin, and the metal lead terminals 2, 2... Are fixed so as to be integrated with the main body by insert molding or the like. A projection 2a is formed by cutting and raising the lead terminals 2, 2..., And the projection 2a is formed so as to face the lower side of the main body of the surface mount connector 1.

  1 and 2 show only the left portion of the surface mount connector 1, the surface mount connector 1 is configured to be symmetrical. That is, a protrusion 2a is formed on the right lead terminal 2, 2.

  The protrusions 2a of the lead terminals 2, 2... Shown in FIGS. 2 and 3 are placed on the surface mount connector 1 so as to fit into the recesses 3a of the printed board 3, and the lead terminals are formed on the conductor pattern of the printed board 3 by reflow soldering. 2, 2, ... are soldered. When the surface mount connector 1 is disposed on the printed circuit board 3, there is a gap through which solder flows between the lead terminals 2, 2... And the conductor pattern of the printed circuit board 3.

  In this way, the surface mount connector 1 is fixed to the printed circuit board only by reflow soldering, but the left lead terminals 2, 2... A reaction force is applied by contact between the protrusion 2a and the tip of the recess 3a of the printed circuit board 3, and the protrusion 2a of the right lead terminals 2, 2... 3 to prevent the solder of the lead terminals 2, 2... From being broken and the conductor pattern to which the lead terminals 2, 2.

  In this embodiment, the lead terminals 2 on which the protrusions 2a are formed are arranged so as to sandwich the lead terminals 2 on which no protrusions are formed. By doing so, the width of the lead terminal 2 on which the protrusion 2a is formed can be widened to increase the holding force. When the width of all the lead terminals is sufficiently wide, the holding force may be further increased by providing protrusions on all the lead terminals. What is necessary is just to select the lead terminal which provides a protrusion suitably according to the width | variety of a lead terminal.

  The protrusions 2 a of the lead terminals 2, 2... Have a positioning effect when the surface mounting connector 1 is arranged on the printed circuit board 3 in addition to the effect of firmly fixing the surface mounting connector 1 to the printed circuit board 3. Yes.

  The embodiment is configured as described above, but the invention is not limited to this. For example, the effect of the present invention can be obtained even if the protrusions of the lead terminals are inclined outward. Further, the manufacturing cost may be reduced by replacing the recess of the printed circuit board into which the protrusion of the lead terminal is fitted with a through hole.

It is a perspective view which shows the part of the surface mount connector which is an Example of this invention. It is a side view for demonstrating the mounting state to the printed circuit board of the same surface mounting connector. It is a perspective view for demonstrating the mounting state to the printed circuit board of the same surface mounting connector. It is a perspective view which shows the mounting state to the printed circuit board of the conventional surface mount connector. It is the perspective view which looked at the mounting state to the printed circuit board of the same surface mounting connector from the other direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Surface mount connector 2 Lead terminal, 2a Protrusion 3 Printed circuit board, 3a Recess 4 Surface mount connector, 4a Cable connection pin, 4b Lead terminal 5 Reinforcement board

Claims (4)

A surface-mount connector configured such that a protrusion protruding toward a printed board is provided on a surface of a lead terminal that is soldered to a printed board pattern, and the protrusion is fitted into a recess or hole formed in the printed board. The surface mount connector according to claim 1, wherein the protrusion is provided on all lead terminals. 2. The surface mount connector according to claim 1, wherein the lead terminals having the protrusions are arranged so that lead terminals having no protrusions are interposed therebetween. The surface mount connector according to claim 1, wherein the protrusion is formed by cutting and raising.

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