JP2002015793A - Connector holding structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector holding structure which reduces assembling process and by which, circuit design of a printed circuit board is made easy. SOLUTION: A connector 1 is kept and fixed to a printed circuit board by arranging a connector main body 7 at a lower surface 2b of a printed circuit board 2 with electronic components arranged on it, and inserting fixing terminal pieces 8c of a contact 8 through a terminal insertion hole 2c from the lower surface 2b toward an upper surface 2a, and the electronic components at the upper surface 2a and the fixing terminal pieces 8c are soldered simultaneously by reflow soldering.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector holding structure for fixing a connector to a printed circuit board.

[0002]

2. Description of the Related Art Conventionally, as a connector 1 for electrically connecting two printed circuit boards 2 and 10 arranged in parallel, there has been one shown in FIGS. Each of the connectors 1 shown in FIG.
A contact 8 having a fixed terminal piece 8c fixed on one side to the printed board 2 by reflow soldering and a contact terminal piece 8b provided on the other side in direct contact with the pattern surface of the printed board 10 is provided on both sides of the connector body 7. As shown in FIG. 9, a connector holding structure for fixing the connector 1 to a printed circuit board includes a connector main body 7 on a lower surface 2b opposite to the upper surface 2a on which the electronic component 5 is mounted. Is arranged on the pattern surface of the lower surface 2b.
The fixed terminal piece 8c is reflow-soldered and the connector 1
Was fixed to the printed circuit board 2. As another conventional example, as shown in FIG. 10, an opening 14 is formed in a part of a printed circuit board 2 on which an electronic component 5 is mounted on an upper surface 2a, and a fixed terminal piece 8c is arranged on the upper surface 2a of the printed circuit board 2. The connector body 7 is fitted into the opening 14 so that the electronic component 5 and the fixed terminal piece 8c are reflow-soldered on the upper surface 2a of the printed circuit board 2 to fix the connector 1 to the printed circuit board 2.

[0003]

By the way, in the conventional example shown in FIG. 9, the reflow soldering of the electronic component 5 is performed on the upper surface 2a of the printed circuit board 2, and the fixed terminal piece 8c of the connector 1 is independently formed on the lower surface 2b. Since reflow soldering has been performed, it is necessary to perform reflow soldering twice on the upper surface 2a and the lower surface 2b at the time of assembling, so that there has been a problem that the number of assembly steps increases. In the conventional example shown in FIG. 10, the reflow soldering is performed only on the upper surface 2a of the printed circuit board 2, so that the assembly process can be reduced. However, since a portion corresponding to the size of the connector 1 is opened, the circuit of the printed circuit board 2 is opened. There was a problem that the design became difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a connector holding structure capable of reducing the number of assembling steps and facilitating circuit design of a printed circuit board.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, a fixed terminal piece is formed on one side,
In the connector holding structure in which a plurality of contacts formed integrally with the fixed terminal piece on the other side and having contact terminal pieces that directly contact the printed circuit board are arranged on both sides of the connector body, the electronic component is provided on one surface. Along with disposing the connector main body on the other surface side of another mounted printed circuit board,
Inserting each of the fixed terminal pieces from one surface to the other surface into each of the terminal insertion holes provided in the another printed circuit board corresponding to the fixed terminal pieces in parallel to project the base of the fixed terminal pieces. Since it is characterized by being fixed by soldering on the other side, the electronic component and connector can be fixed by reflow soldering only on one side, so the assembly process can be reduced,
Since a large opening is not formed in the printed board, the circuit design of the printed board is facilitated.

According to a second aspect of the present invention, in the first aspect of the present invention, a U-shape is formed so as to protrude inward at the protruding base portions of the fixed terminal pieces on both sides in parallel protruding from the other surface of the printed circuit board. The connector body can be brought into close contact with the printed circuit board by sandwiching the printed circuit board between the opposing tapered sections.

According to a third aspect of the present invention, in the second aspect of the present invention, from the base of the fixed terminal strip contacting the connector main body to the tip protruding from the other surface via the terminal insertion hole of the another printed circuit board. Since the contact is attached to the connector main body so as to be able to swing freely, the fixed terminal piece can be provided with sufficient spring characteristics and is less likely to be plastically deformed.

[0008] The invention of claim 4 is the first to third aspects of the present invention.
In any one of the inventions described above, the protrusion that resiliently contacts a part of the fixed terminal piece disposed from the base portion so as to be parallel to the side surface of the connector main body is formed on the side surface of the connector main body, and the other printed circuit board. Since it is formed on the near side, it is possible to prevent the tip of the fixed terminal piece from wobbling when the fixed terminal piece penetrates the printed circuit board.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described by way of embodiments with reference to the drawings. (Embodiment 1) The connector holding structure of this embodiment is shown in FIG.
It is configured as shown in FIG.

The connector 1 used in this embodiment is shown in FIG.
As shown in FIG. 1A, a central wall 3 having a generally U-shaped cross section and an upper opening is provided, and both side walls 4 and 4 are provided. A large number of contacts 8 are attached to a connector body 7 made of a resin molded product formed by integrally extending the intermediate wall 6 along the longitudinal direction of the central wall 3. Storage portions 12, 12 are provided on both sides of the intermediate wall 6 of the connector main body 7, and FIG.
(C) As shown in FIG.
The two spaces are partitioned by partition walls 7a, and the contacts 8 are housed and arranged in the respective housing portions 12.

The contact 8 is a conductor having a spring property. As shown in FIG. 2A, the contact 8 is bent in a substantially U-shape, and a main body piece 8a housed in the housing portion 12 and a main body piece 8a are formed. A contact terminal piece 8b is continuously provided at one end, and a fixed terminal piece 8c which is a DIP terminal is continuously provided at the other end. The contact terminal piece 8b is formed in a substantially U-shape, and a contact portion 9 elastically contacting another printed circuit board 10 is formed at an outer edge portion. The contact terminal piece 8b projects downward from the connector main body 7 in FIG. 2A in a state where the main body piece 8a of the contact 8 is stored in the storage portion 12. The fixed terminal piece 8c is formed so as to protrude above the connector main body 7 along the outer side surface of the side wall 4 of the connector main body 7.

On the other hand, as shown in FIG. 3, a terminal insertion hole 2c through which the fixed terminal piece 8c of the connector body 7 is inserted is formed in the printed circuit board 2, and the electronic component 5 is mounted on the upper surface 2a as shown in FIG. Have been placed.

The connector 1 is mounted on the printed circuit board 2 of the present embodiment.
As shown in FIG. 1, the holding structure of the connector 1 for holding
First, the connector main body 7 is arranged on the lower surface 2b of the printed circuit board 2, and a fixed terminal piece 8c protruding outward from the connector main body 7 is pressed into the terminal insertion hole 2c from the lower surface 2b toward the upper surface 2a. Here, the fixed terminal piece 8c is formed by projecting a portion projecting from the upper surface 2a of the printed circuit board 2 in FIG.
3, a V-shaped tapered portion 11 protruding inward is provided at the base of the protruding portion 13, and as shown in FIG. The part is long enough to swing freely. As a result, the tapered portion 1 of the opposed fixed terminal piece 8c
1 is engaged with the upper surface 2 a of the printed circuit board 2, and holds the printed circuit board 2. Then, the electronic component 5 arranged on the upper surface 2a
The connector 1 is fixed to the printed circuit board 2 by performing reflow soldering of the fixed terminal pieces 8c exposed on the upper surface 2a simultaneously with the reflow soldering.

Next, the connection between the printed circuit board 2 and the printed circuit board 10 by using the connector 1 as shown in FIG. 6 will be described. The wiping contact of the contact portion 9 of the contact terminal piece 8b of the connector 1 fixed and held on the printed board 2 with the pattern surface 10b of the upper surface 10a of the printed board 10 shown in FIG. And the printed circuit board 10 are electrically connected. Here, since the contact portion 9 makes wiping contact with the pattern surface 10b of the upper surface 10a of the printed circuit board 10, the pattern surface 10b is formed to have a sufficiently large contact area.

As described above, in the present embodiment, the terminal insertion holes 2c are formed in the printed circuit board 2, and the fixed terminal pieces 8b of the connector 1 are moved from the lower surface 2b of the printed circuit board 2 to the upper surface 2a through the terminal insertion holes 2c. The fixed terminal piece 8c can be reflow-soldered at the same time as the electronic component 5 disposed on the upper surface 2a by protruding, so that the reflow soldering operation is performed only once and the assembly process is reduced. The fixed terminal piece 8c of the connector 1 is attached to the printed circuit board 2 with sufficient strength by reflow soldering.
Therefore, there is an effect that a holding bracket or the like for assisting holding and fixing of the connector 1 is not required.

When the fixed terminal piece 8c of the connector 1 is pressed into the terminal insertion hole 2c from the lower surface 2b of the printed circuit board 2 and inserted into the upper surface 2a, a tapered portion 11 is provided at the base of the projecting portion 13 of the fixed terminal piece 8c. Therefore, there is an effect that the opposing tapered portions 11, 11 are locked on the upper surface 2 a of the printed circuit board 2, sandwich the printed circuit board 2, and allow the connector body 7 to be in close contact with the lower surface 2 b of the printed circuit board 2. .

Further, the fixed terminal piece 8c has a sufficient length so as to be swingable from a portion in contact with the base on the outer surface of the side wall 4 of the connector body 7 to the tip end. There is an effect that sufficient spring characteristics are obtained and plastic deformation is difficult. (Embodiment 2) This embodiment is characterized by the connector main body 7, and the main part of the connector main body 7 will be described. As shown in FIG. 8, a projection 4a is provided on an upper portion of the outer side surfaces of both side walls 4, 4 forming the connector main body 7 so as to protrude laterally, and the fixed terminal piece 8c of the contact 8 is provided on the projection 4a. The main body 8a of the contact 8 is housed in the housing 12 of the connector 1 so that a part of the body 8a is in elastic contact. Other configurations are the same as those of the first embodiment, and the same portions are denoted by the same reference numerals and description thereof will be omitted.

As described above, when a part of the fixed terminal piece 8c elastically contacts the projection 4a, when the fixed terminal piece 8c passes through the fixed terminal piece 8c from the lower surface 2b to the upper surface 2a, the fixed terminal piece 8c is Since the fixed terminal piece 8c is supported by the protruding portion 4a, it is possible to prevent the tip of the fixed terminal piece 8c from wobbling, and it is possible to easily insert the fixed terminal piece 8c into the printed circuit board 2.

[0019]

According to the first aspect of the present invention, a fixed terminal piece is formed on one side, and is integrally provided on the other side with the fixed terminal piece.
In a connector holding structure in which a plurality of contacts each having a contact terminal piece directly in contact with a printed circuit board are arranged on both sides of a connector main body, the connector is provided on another surface of another printed circuit board on which electronic components are mounted on one surface. A main body is arranged, and each fixed terminal piece is inserted from one surface to the other surface through each terminal insertion hole provided on the another printed circuit board in correspondence with the fixed terminal piece in parallel with the fixed terminal piece. Since the projecting base of the piece is fixed by soldering on the other surface,
Since the electronic components and the fixed terminal pieces of the connector can be simultaneously fixed to the printed circuit board by one-time reflow soldering on one side, the assembly process can be reduced, and since a large opening is not formed in the printed circuit board, printing can be performed. There is an effect that the circuit design of the substrate is facilitated.

According to a second aspect of the present invention, in the first aspect of the present invention, a U-shape is formed so as to protrude inward from the protruding base portions of the fixed terminal pieces on both sides in parallel protruding from the other surface of the printed circuit board. The connector body can be brought into close contact with the printed circuit board by sandwiching the printed circuit board between the opposing tapered parts. Is sufficient, and there is an effect that the auxiliary fixing by the holding bracket is not required.

According to a third aspect of the present invention, in the second aspect of the present invention, from the base of the fixed terminal strip contacting the connector main body to the tip protruding from the other surface through the terminal insertion hole of the another printed circuit board. Since the contact is attached to the connector main body so as to be able to swing freely, the fixed terminal piece has sufficient spring characteristics and is not easily plastically deformed, so that the printed circuit board can be firmly clamped. There is.

According to a fourth aspect of the present invention, there is provided the first to third aspects.
In the invention, the protrusion that elastically contacts a part of the fixed terminal piece disposed from the base portion so as to be parallel to the side surface of the connector body is provided on the side surface of the connector body and on the side near the another printed circuit board. Since it is formed, when the fixed terminal piece penetrates the printed circuit board, it is possible to prevent the tip of the fixed terminal piece from wobbling and to easily insert the fixed terminal piece into the terminal insertion hole of the printed circuit board.

[Brief description of the drawings]

FIG. 1 is a partially omitted cross-sectional view showing a first embodiment.

2A is a sectional view of the connector according to the first embodiment, FIG. 2B is a top view of the connector according to the first embodiment, and FIG. 2C is a side view of the connector according to the first embodiment.

FIG. 3 is a partially omitted top view of a printed circuit board for fixing the connector according to the first embodiment.

FIG. 4 is a partially omitted cross-sectional view before a printed circuit board is elastically contacted with a contact terminal piece of the connector according to the first embodiment.

FIG. 5 is a partially omitted cross-sectional view showing the swingability of a fixed terminal piece of the connector according to the first embodiment.

FIG. 6 is a partially omitted cross-sectional view after a printed circuit board is elastically contacted with a contact terminal piece of the connector according to the first embodiment.

FIG. 7 is a top view of the printed circuit board in contact with the contact terminal piece according to the first embodiment, with a part thereof omitted;

FIG. 8 is a sectional view of a connector according to a second embodiment.

FIG. 9 is a sectional view showing Conventional Example 1.

FIG. 10 is a sectional view showing a second conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connector 2 Printed circuit board 2a Upper surface 2b Lower surface 2c Terminal insertion hole 3 Central wall 4 Side wall 6 Intermediate wall 7 Connector main body 8 Contact 8a Main body piece 8b Contact terminal piece 8c Fixed terminal piece 9 Contact portion 11 Tapered portion 12 Storage portion 13 Projecting portion

Claims (4)

[Claims] 1. A plurality of contacts having a fixed terminal piece formed on one side and a contact terminal piece formed integrally and connected to the fixed terminal piece and directly contacting a printed circuit board on the other side. In the holding structure of the installed connector,
Along with arranging the connector body on the other surface side of another printed circuit board on which electronic components are mounted on one surface, and in each of the terminal insertion holes provided on the another printed circuit board corresponding to the fixed terminal pieces in parallel. A connector holding structure, wherein each of the fixed terminal pieces is inserted from one surface to the other surface, and a projecting base of the fixed terminal piece is fixed by soldering on the other surface. 2. The method according to claim 2, wherein the tapered portion is formed in a U-shape so as to protrude inward at a protruding base portion of the fixed terminal pieces on both sides protruding from the other surface of the printed circuit board in parallel. The connector holding structure according to claim 1, wherein: 3. The contact according to claim 1, wherein the contact is pivotally movable from a base of the fixed terminal piece, which comes into contact with the connector body, to a tip projecting from the other surface through a terminal insertion hole of the another printed circuit board. 3. The connector holding structure according to claim 2, wherein the connector holding structure is attached to the connector main body. 4. A projection which elastically contacts a part of the fixed terminal piece disposed from the base to be parallel to a side surface of the connector main body, on a side surface of the connector main body and on a side closer to the another printed circuit board. The connector holding structure according to any one of claims 1 to 3, wherein the connector holding structure is formed as follows.