JP2000231954A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector capable of mounting to a printed wiring board by clipping without chipping off cream solder provided on a conductor pattern surface of the printed wiring board in advance. SOLUTION: The connector housing 11 of a connector 1 can be bent at a connecting part 11c, then, a front side contact 17a moves with a first part 11a, and backside contact 17b moves with a second part 11b, so the distance between the front side contact 17a and the backside contact 17b increases. In this condition, a printed wiring board 3 is installed between both contact parts 17a and 17b, and thereby the contact between both contacts 17a, 17b and the surface of the printed wiring board 3 is prevented, and when mounting the connector 1, cream solder of the surface of conductor pattern 21 is not chipped off by the contact part 17a or 17b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a connector mounted on a printed wiring board.

[0002]

2. Description of the Related Art Conventionally, as a connector mounted on a printed wiring board, for example, a connector described in Japanese Patent Application Laid-Open No. Hei 7-212369 is known. The connector described in the publication is mounted on a printed wiring board so as to sandwich the printed wiring board between a lead contacting the front side of the printed wiring board and a tongue piece contacting the back side of the printed wiring board. Then, the leads are soldered to the conductor pattern on the printed wiring board.

[0003]

However, the above connector has the following problems. That is, the connector described in the above publication is inserted into the printed wiring board from the end of the printed wiring board, but the lead of the connector contacts the conductor pattern surface of the printed wiring board until the proper mounting position is reached. If cream solder is applied to the surface of the conductor pattern beforehand, the cream solder on the surface of the conductor pattern will be scraped off by the leads of the connector, and there will be a gap between the lead and the conductor pattern. As a result, the amount of solder to be performed becomes insufficient, resulting in a problem of inferior soldering.

[0004] In order to solve such a problem, the above-mentioned publication proposes a method in which cream solder is placed near the tip of a lead and molten solder is sucked between the lead and the conductor pattern. In such a method, since the cream solder must be provided at each of the scattered soldering points, there is a disadvantage that it takes much time and effort as compared with the method of applying the cream solder to the surface of the conductor pattern.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to remove the cream solder without scraping it even if the cream solder is previously applied to the surface of the conductor pattern of the printed wiring board. An object of the present invention is to provide a connector that can be mounted so as to sandwich a printed wiring board.

[0006]

Means for Solving the Problems and Effects of the Invention In order to achieve the above object, a connector according to the present invention employs the structure described in claim 1 above. According to this connector, the front contact portion and the back contact portion are configured so that the distance between them can be changed. Therefore, when the printed wiring board is introduced between the two contact portions, the contact between the two contact portions is sufficiently performed. The contact between both contact portions and the surface of the printed wiring board can be prevented by increasing the distance between the contact portions. When the relative position of the printed wiring board with respect to both contact portions is adjusted to an appropriate position, one of the contact portions is brought into contact with the printed wiring board, and the other contact portion is printed by reducing the interval between the two contact portions. It can be in contact with the wiring board.

In this way, if the contact portions are brought into contact with the printed wiring board, the contact portions do not slide on the surface of the conductor pattern of the printed wiring board. Even when the soldering is performed, the cream solder on the surface of the conductor pattern is not scraped off by the contact portion on either side when mounting the connector. Therefore, when soldering is performed by reflow soldering, the absolute amount of solder existing between the conductor pattern and the front side contact part or the back side contact part which is a conductor part does not become insufficient,
It does not cause soldering defects.

Further, as described above, when mounting on the printed wiring board, since each contact portion does not slide on the surface of the conductor pattern of the printed wiring board, for example, a large number of contact portions are densely arranged. Even if they are soldered to one side of the printed circuit board, one contact will not scrape the cream solder applied for the other. Therefore, it is easier to increase the density of the soldered portion and increase the number of poles of the connector as compared with conventional products.

Furthermore, if both the front side contact part and the back side contact part are made of conductor parts, it becomes possible to electrically connect the conductor patterns on both front and back sides with one connector, so that the conductor patterns are formed on both sides of the printed wiring board. Once formed, electronic components can be mounted on both front and back sides, and the printed wiring board 1
The mounting density of electronic components per sheet can be increased.

[0010] By the way, various structures can be considered for the structure in which the distance between the front contact portion and the back contact portion can be changed. However, if the structure described in claim 2 is adopted, the connector housing becomes a movable structure. Therefore, it is sufficient that the front contact portion and the back contact portion have a structure fixed or integrally formed with the connector housing. Therefore, the overall structure of the connector is simplified as compared with a structure in which the front contact portion and the back contact portion themselves change the distance between both contact portions with relative displacement with respect to the connector housing.

[0011] Further, when the configuration described in claim 3 is adopted, when mounting the printed wiring board on the printed wiring board, first, the first and second portions are separated to widen the space between both contact portions. When the relative position with respect to the two contact portions is adjusted to an appropriate position, the shape of the connecting portion is restored and the distance between the two contact portions is reduced only by removing the external force. Therefore, by adjusting the relationship between this interval and the thickness of the printed wiring board so that the printed wiring board is sandwiched between the contact portions when the interval is reduced, final fixing such as soldering can be performed. Prior to this, the connector can be temporarily fixed to the printed wiring board.

Further, when the configuration described in claim 4 is adopted, the relative position of the connector with respect to the printed wiring board is determined by fitting the positioning projections into holes or recesses formed in the printed wiring board side. Therefore, the connector can be soldered to an appropriate position very easily. In particular, when the configuration described in claim 5 is adopted, the positioning projections fit into the through holes penetrating the printed wiring board in the thickness direction, so that the connector is positioned in the thickness direction of the printed wiring board. And no relative displacement occurs in the intersecting direction. Therefore, even if an external connector that is paired with this connector is inserted or removed, the connector is unlikely to be displaced relative to the printed wiring board, and the load is not concentrated on the soldered conductor parts, and the soldered portion Does not cause damage.

Further, when the structure described in claim 6 is adopted, when the distance between the front contact portion and the rear contact portion is reduced, the engaging member is engaged, and the distance between both contact portions is not widened. Even if an external force that increases the distance between the two contact portions acts on the connector housing, the load does not concentrate on the soldered conductor parts, and the soldered portion is not damaged.

[0014]

Next, an embodiment of the present invention will be described with reference to an example. FIG. 1 is an exploded perspective view of a vehicle-mounted electronic control device configured using the connector of the present invention. In this vehicle-mounted electronic control device, the connector 1 is
The printed wiring board 3 is attached to an end of the printed wiring board 3, and the printed wiring board 3 is sandwiched between a case 5 and a cover 6 and fixed at four corners by four screws 8.

The connector 1 includes a connector housing 11 formed of a resin material which is an insulator, and a conductor component 13 held in a predetermined arrangement in the connector housing 11. Connector housing 11
Is a substantially V-shaped slit 1 on both sides as shown in FIG.
5 and the first portion 11 above the slit 15
a, the second portion 11b below the slit 15, and the connecting portion 11c between them are integrally formed of resin. The connecting portion 11c has two slits 15 on both sides.
And is formed thinner than the other wall surfaces of the connector housing 11 so as to be elastically deformed with an appropriate spring property.

As shown in FIG. 1, in the present embodiment, the conductor parts 13 are arranged in four rows vertically and a plurality of rows horizontally. The conductor components 13 of each stage are functionally the same, although there are some differences in size and shape. Specifically, as shown in FIG. 2, when one end of each conductor component 13 is inserted into an external connector (not shown) adapted to the connector 1, the conductor portion of the external connector And a contact portion 13a that is electrically connected to the contact portion 13a. The other end of the conductor component 13 is soldered to the printed wiring board 3 side and electrically connected to the lead portion 1.
3b. Note that FIG.
Although the boundary between the contact portion 13a and the lead portion 13b is not explicitly shown,
May be configured by joining components suitable for each function as long as they are electrically connected.

Of the four stages of conductor parts 13, the upper two stages of leads 13b are connected to the printed wiring board 3
And the lead portion 13b for the lower two steps
Are soldered to the back side of the printed wiring board 3.
Hereinafter, the lead portions 13b for the upper two stages that are in contact with the front side of the printed wiring board 3 are also referred to as front side contact portions 17a. Further, the lower two-stage lead portions 13b in contact with the back side of the printed wiring board 3 are also referred to as back side contact portions 17b.

The printed wiring board 3 has a conductor pattern 21 formed on its surface as shown in FIG.
The lead 13b is soldered to the conductor pattern 21. In the connector 1 configured as described above, before the lead portion 13b is soldered, the connector housing 11 is bent at the connecting portion 11c as shown in FIG. Can be. At this time, the arrangement position of the conductor parts 13, the formation position of the connecting portion 11 c, and the shape of the slit 15 are adjusted to an appropriate relationship in advance, so that the upper two-stage contact portion 13 a and the lower two stage are provided. The contact portion 13a does not abut.

When the connector housing 11 is deformed in this manner, the front contact portion 17a is displaced together with the first portion 11a, and the back contact portion 17b is displaced together with the second portion 11b, so that the front contact portion 17a and the back contact portion 17b are displaced. The interval of expands. Therefore, in this state, when the printed wiring board 3 is introduced between the contact portions 17a and 17b, contact between the contact portions 17a and 17b and the surface of the printed wiring board 3 can be prevented.

Further, both contact portions 17 of the printed wiring board 3
After the relative positions of the contact portions 17a and 17b are adjusted to appropriate positions, for example, the back contact portion 17b is brought into contact with the printed wiring board 3 to perform soldering.
By narrowing the interval between the wires 7b, the front side contact portion 17a can be brought into contact with the printed wiring board 3 to perform soldering.

According to such a procedure, both contact portions 17a, 17b
And the printed wiring board 3 are brought into contact with each other.
Since a and 17b do not slide on the surface of the conductor pattern 21 of the printed wiring board 3, even when cream solder is applied to the surface of the conductor pattern 21 in advance, when the connector 1 is mounted, Contact portions 17a, 17
The cream solder on the surface of the conductor pattern 21 is not scraped off by any of the methods b. Therefore, the absolute amount of the solder existing between the lead portion 13b and the conductor pattern 21 does not become insufficient, and the soldering failure does not occur.

In the case of the connector 1, a large number of conductor parts 13 are soldered to one surface of the printed wiring board 3, but each lead portion 13b slides on the surface of the conductor pattern 21 of the printed wiring board 3. Since one of the lead portions 13b is disposed at the soldering position without any
The cream solder applied for 3b is not scraped off. Therefore, it is easier to increase the density of the soldered portion and increase the number of poles of the connector as compared with conventional products.

Further, the front contact portion 17a and the back contact portion 1
7b are both composed of conductor parts 13 and one connector 1 enables electrical connection to the conductor patterns 21 on both front and back sides, so that electronic parts can be mounted on both front and back sides of the printed wiring board 3 and printed. The mounting density of electronic components per one wiring board can be increased.

In addition, since the connecting portion 11c of the connector housing 11 is elastically deformed with a suitable spring property, the first portion 11a and the second portion 11 of the connector housing 11 are deformed.
When the printed wiring board 3 is introduced between the contact portions 17a and 17b and the shape of the connecting portion 11c is restored, the contact portions 17a and 17b are separated. The printed wiring board 3 is sandwiched between 17b. Therefore, prior to final fixing such as soldering, the connector 1 can be temporarily fixed to the printed wiring board 3, so that workability when mounting the connector 1 is improved. Can be.

Next, another embodiment will be described. In addition, although some of the embodiments described below are different from the above-described embodiments, the remaining portions are configured in the same manner as the above-described embodiments.
Only the reference numerals used in the above embodiment are given, and the detailed description thereof is omitted.

The connector 31 shown in FIG.
Is different from the connector 1 described above. That is, while the connector 1 has the substantially V-shaped slit 15 formed therein, the connector 31 has the substantially U-shaped slit 33 formed therein. That is, if the shape of the slit to be formed in the connector housing 11 is such that the connector housing 11 can be folded in two to separate the front contact portion 17a and the back contact portion 17b,
It can be adopted without being limited to a specific shape.

However, when the contact portions 13a are present in both the first portion 11a and the second portion 11b, which are relatively displaced like the connector 31, the first portion 11a and the second portion 11b are accompanied by the relative displacement. It is desirable to set the shape of the slit so that the contact portion 13a does not abut.

The connector 31 configured as described above also
The same operation and effect as those of the connector 1 described above are achieved. Next, the connector 41 shown in FIG. 5 includes a columnar projection 4 protruding from the first portion 11 a of the connector housing 11.
3 and a cylindrical projection 45 protruding from the second portion 11 b of the connector housing 11. The outer diameter of the columnar projection 43 is set to a size that fits exactly into the lumen of the cylindrical projection 45, and the outer diameter of the cylindrical projection 45 is set to a size that fits exactly into a through hole formed in the printed wiring board 3. Have been.
Then, when the connector housing 11 is mounted on the printed wiring board 3, as shown in FIG.
The column-shaped projection 43 fits inside the cylindrical projection 45 in the through-hole formed in the hole.

The connector 41 configured as described above also
In addition to the same operations and effects as the connectors 1 and 31 described above, the cylindrical projection 45 fitted into the through-hole formed on the printed wiring board 3 functions as a positioning projection in the present invention. The relative position of the connector 41 with respect to the printed wiring board 3 is determined only by fitting the cylindrical projection 45 into the through hole of the printed wiring board 3, so that the connector 1 can be extremely easily soldered to an appropriate position.

In addition, since the cylindrical projection 45 is fitted into the through hole penetrating the printed wiring board 3 in the thickness direction, the connector 41 extends in the direction crossing the thickness direction of the printed wiring board 3. No relative displacement. Therefore, even if the external connector paired with this connector 41 is inserted and removed,
The load does not concentrate on the soldered conductor component 13, and the soldered portion is not damaged.

Next, the connector 51 shown in FIG. 7 includes a first engagement piece 53 protruding from the first portion 11a of the connector housing 11, and a second portion 1 of the connector housing 11.
1b, and a second engagement piece 55 protruding from 1b. These engaging pieces 53 and 55 are designed to engage with each other in a through hole formed in the printed wiring board 3.

The connector 51 constructed as described above also
The first portion 1 of the connector housing 11 has the same operation and effect as the connectors 1 and 31 described above, and also reduces the distance between the front contact portion 17a and the back contact portion 17b.
When the first portion 1a and the second portion 11b are relatively displaced, the two engaging pieces 53 and 55 are engaged with each other to form the two contact portions 17a and 1b.
The interval between the electrodes 7b does not become wide. Therefore, even if an external force acting on the connector housing 11 acts to increase the distance between the contact portions 17a and 17b, the load does not concentrate on the soldered conductor component 13, and the soldered portion is not damaged. Do not invite.

Although the embodiments of the present invention have been described above, the present invention can be practiced in modes other than those described above, and is not limited to the above specific modes. For example, in each of the above embodiments, the conductor component 13 for four stages is provided,
The configuration is such that the steps are soldered to the front side of the printed wiring board 3 and the two steps are soldered to the back side of the printed wiring board 3. However, the number and arrangement method of the conductor parts to be soldered to the printed wiring board 3 Is not particularly limited. For example,
The conductor components to be soldered to one surface need not be arranged in two rows as described above, and may be arranged in one row or three or more rows.

It is not always necessary to solder the conductor parts to both surfaces. For example, a conductor component may be soldered on one surface, but only a holding piece that is not a conductor component may be provided on the other surface, and the printed wiring board may be sandwiched between the conductor component and the holding piece. Also in this case, by providing a structure in which the distance between the conductor component and the holding piece can be enlarged, the conductor component does not slide on the surface of the printed wiring board,
Since the connector can be mounted, a situation in which the cream solder is scraped off by the conductor component does not occur.

Further, in the above-described embodiment, the connector housing in which the first and second portions are connected so as to be relatively displaceable by the elastically deformable connecting portion is shown. However, if the first and second portions can be relatively displaced. The connecting portion may not be elastically deformable. Or, there is no connecting part itself,
The first and second portions may be separated.

In the above-described embodiment, only the case where the connector is used as a component of the on-vehicle electronic control device is shown. However, the connector of the present invention can be mounted on a printed wiring board of various electronic devices.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a vehicle-mounted electronic control device in which a connector shown as a first embodiment is used.

FIG. 2 is a sectional view showing a mounted state of the connector.

FIG. 3 is a sectional view showing a state in which an interval between contact portions on the front and back of the connector is widened.

FIG. 4 is a sectional view of a connector shown as a second embodiment.

FIG. 5 is a perspective view showing a state in which a space between contact portions on the front and back sides of a connector shown as a third embodiment is widened.

FIG. 6 is a sectional view of a connector shown as a third embodiment.

FIG. 7 is a sectional view of a connector shown as a fourth embodiment.

[Explanation of symbols]

1, 31, 41, 51 ... connector, 3 ... printed wiring board, 5 ... case, 6 ... cover, 8 ...
Screw, 11 ... connector housing, 11a
-1st part, 11b ... 2nd part, 11c ... connection part, 13 ... conductor parts, 13a ... contact part,
13b: lead portion, 15, 33: slit, 1
7a ... front side contact part, 17b ... back side contact part, 21
... conductor pattern, 43 ... columnar projection, 45 ...
Cylindrical projections, 53 ... first engagement piece, 55 ... second engagement piece.

Claims (6)

[Claims] A front contact portion that contacts the front side of the printed wiring board; and a back contact portion that contacts the back side of the printed wiring board. The printed contact board is sandwiched between the two contact portions. In the connector attached to the printed wiring board, one or both of the two contact portions is a conductor component that is soldered to a conductor pattern on the printed wiring board. A connector, wherein the back side contact portion is configured to be able to change an interval between the two. 2. A first portion and a second portion which can be displaced relative to each other.
A connector housing in which the front contact portion is provided in the first portion and the back contact portion is provided in the second portion, wherein the first and second portions of the connector housing are provided. The connector according to claim 1, wherein the relative displacement changes a distance between the front contact portion and the back contact portion. 3. The first and second connectors of the connector housing.
The portions are connected via an elastically deformable connecting portion, and when an external force is applied to the first and second portions to separate the two portions, the connecting portion is elastically deformed and between the two contact portions. 3. The connector according to claim 2, wherein when the external force is removed while the space is widened, the shape of the connecting portion is restored, and the space between the contact portions is reduced. 4. 4. A positioning projection that fits into a hole or a recess formed on the printed wiring board side is formed on the connector housing, and the positioning projection is fitted on the printed wiring board side. The connector according to claim 2 or 3, wherein the relative position with respect to the printed wiring board is determined. 5. The connector according to claim 4, wherein the positioning projection has a shape that fits into a through hole penetrating the printed wiring board in a thickness direction. 6. A distance between the front contact portion and the rear contact portion is reduced by providing one of the pair of engaging members engaging with each other in the first portion and the other in the second portion. 6. The structure according to claim 2, wherein said engaging member is engaged so that said interval is not widened.
The connector according to any one of the above.