JPH0645037A - Connector for printed board with terminal aligning plate - Google Patents

Abstract

PURPOSE:To eliminate the possibility of cracking a solder part for connecting the connecting hole of a printed board to the leg part of a terminal in the case of a thermal cycle test. CONSTITUTION:A connector with terminal aligning plate for printed board has a connector housing 11; a plurality of terminals 12 in which respective leg parts 12a protruding from the connector housing 11 are inserted and connected to the connecting holes Pa of a printed board P; and an aligning plate 14 having a plurality of regulating holes 13 corresponding to the leg parts 12a of the terminals 12 so that the leg parts 12a of the terminals are inserted to the regulating holes 13 to align the terminals 12 in proper positions. In such a connector with terminal aligning plate for printed board, slender diameter parts 12b slender than the leg parts 12a are provided on the upper side of the leg parts 12a of the terminals 12, and passed through the regulating holes 13 of the aligning plate 14 in freely fitted state to situate the aligning plate 14 in a second position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed wiring board connector with a terminal alignment plate.

[0002]

2. Description of the Related Art A connector for a printed circuit board is one in which a leg of a terminal is inserted into a connection hole of a printed circuit board for connection, and the position of the connection hole of the printed circuit board and the leg of the terminal do not match. , It becomes difficult to insert the legs.

Therefore, in order to prevent the legs from being bent by mistake during handling, the terminals are previously aligned and held by the aligning plate.

Conventionally, as this type of connector, Japanese Patent Laid-Open No.
The one described in Japanese Patent Laid-Open No. 3-231891 is known.

As shown in FIGS. 7 to 9, this connector includes a connector housing 1 and a plurality of terminals 2 protruding from the rear portion thereof, each leg 2a of which is inserted and connected to a connection hole Pa of a printed circuit board P. An aligning plate 4 which has a plurality of restriction holes 3 corresponding to the legs 2a of the terminal 2 and presses the legs 2a of each terminal 2 into the restriction holes 3 to align the terminals 2 at proper positions. is doing.

To connect the terminal 2 of such a connector to the printed circuit board P, the leg portion 2 of the terminal 2 is arranged by the aligning plate 4.
The leg portion 2a is positioned on the connection hole Pa of the printed circuit board P while holding a in the aligned state, and is inserted as it is. Then, the leg portion 2a of the terminal 2 is correctly inserted into the connection hole Pa of the printed board P, and the state shown in FIG. 8 is obtained. In this state, the legs 2a of the terminals 2 are connected to the connection holes Pa of the printed circuit board P by soldering, whereby the connection between the connector and the printed circuit board P is completed.

[0007]

By the way, as shown in FIG. 10, the aligning plate 4 is provided with the restriction hole 3 so that the leg portion 2 of the terminal 2 can be prevented.
Since the position of “a” is strictly regulated, cracks C may occur in the solder part H when the thermal cycle test is performed. It is considered that this is because the difference in thermal expansion between the printed circuit board P and the alignment plate 4 causes a difference in the amount of expansion and contraction, and the resulting stress is applied to the solder portion H via the terminal 2.

[0008] Therefore, an object of the present invention is to provide a connector for a printed circuit board with a terminal aligning plate which is free from the possibility of cracks in the solder portion even if such a thermal cycle test is performed.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and includes a connector housing and a plurality of terminals projecting from the connector housing and having leg portions inserted and connected to the connection holes of the printed circuit board. A terminal having a plurality of restriction holes corresponding to the legs of these terminals and aligning the terminals at appropriate positions by inserting the legs of the terminals into the restriction holes at the first position. In a connector for a printed circuit board with an alignment plate, a small-diameter portion thinner than the leg portion is provided above the leg portion of each terminal, and the alignment plate is penetrated through a restriction hole of the alignment plate in a loosely fitted state. It is characterized in that it is located at the second position.

[0010]

[Function] Since there is a thin portion which is thinner than the leg portion above the leg portion, the aligning plate is lifted up and positioned at the thin portion as the leg portion of the terminal is inserted into the connection hole of the printed circuit board. At the second position, a play (clearance) occurs between the restriction hole of the alignment plate and the outer periphery of the terminal. Therefore, this play
The difference in the amount of thermal expansion and contraction between the printed circuit board and the alignment plate is absorbed, and the stress generated in the solder portion is reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

The printed circuit board connector 10 of this embodiment
As shown in FIG. 1, a connector housing 11, a plurality of terminals 12 projecting from the rear surface of the connector housing 12 and bent into an L-shape, each of which has a leg 12a inserted into and connected to a connection hole of a printed circuit board, and these terminals 12 are formed. Has a plurality of regulation holes 13 corresponding to the leg portions 12a of the terminal 12 and the leg portions 12a of the terminals 12 are inserted into the regulation holes 13 at the first position.
And an alignment plate 14 for aligning the.

A pair of parallel guide walls 15 are formed on both sides of the rear portion of the connector housing 11, and T-shaped guide rails 16 are provided on the inner surfaces of the guide walls 15 so as to project therefrom. These guide rails 16 are aligned plates 14
The movement of the alignment plate 14 and the movement range of the alignment plate 14 are regulated.
6a is formed.

The alignment plate 14 is a rectangular plate and has engaging grooves 17 slidably engaged with the guide rails 16 at both ends in the longitudinal direction. Further, the alignment plate 14 has feet 18 of appropriate height on the lower surfaces of both ends. This foot 18
Is for contacting the upper surface of the printed circuit board when the terminals are inserted, and thereby determining the lifting height of the alignment plate 14 at an appropriate position.

The regulation hole 13 of the aligning plate 14 is formed to have substantially the same outer dimensions as the leg portion 12a of the terminal 12 (here, the lower side from the portion where the aligning plate 14 is located at the time of terminal alignment is referred to as "leg portion") 12a. As shown in FIG. 2, the position of the leg 12a can be accurately positioned with the leg 12a inserted (first position). The restriction hole 13 is formed in a shape corresponding to the cross-sectional shape of the leg portion 12a of the terminal 12, and is formed in a rectangular shape in this embodiment (see FIG. 1).

In this connector 10, the terminal 12
At a position above the leg portion 12a, a small diameter portion (a diameter is reduced in the case of a terminal having a circular cross section and a width is reduced in the case of a terminal having a rectangular cross section) 12b is formed. ing. As shown in FIGS. 4 and 5, this 12b has a height (first position) at which the alignment plate 14 is positioned when the alignment plate 14 is lifted as the leg portions 12a of the terminals 12 are inserted into the printed circuit board P. 2) and the length of the small diameter portion 12b is set to an appropriate value according to the thickness of the alignment plate 14.

In the alignment plate 14 thus constructed, the leg portion 12a of the terminal 12 is inserted into the regulation hole 13 in the state before the connector 10 is used, as shown in FIGS. It is located at the height (first position) of 12a, and in this state, the position of the leg portion 12a of the terminal 12 is held at an appropriate position by the restriction hole 13.

The terminal 12 of the connector 10 is connected to the printed circuit board P.
In this state, the leg portion 12a is positioned on the connection hole Pa of the printed circuit board P as shown in FIG.

Then, since the leg portions 12a of the terminals 12 are correctly aligned by the aligning plate 14, the leg portions 12a of the terminals 12 are correctly inserted into the connection holes Pa of the printed circuit board P, and at the same time, the legs 18 of the aligning plate 14 are aligned. By hitting the upper surface of the printed circuit board P, the alignment plate 14 is lifted up by the force at the time of insertion to reach the height (second position) shown in FIG. In this state, the legs 12a of the terminals 12 are connected to the connection holes Pa of the printed circuit board P by soldering, thereby completing the connection between the connector 10 and the printed circuit board P.

Here, the terminal 12 has a smaller diameter portion 12b than the leg portion 12a above the leg portion 12a, and the aligning plate 14 is provided.
5 rises as the terminal 12 is inserted, so that it is located in the small diameter portion 12b as shown in FIG. 5, and as a result, there is play between the restriction hole 13 of the alignment plate 14 and the outer periphery of the terminal 12. (Clearance) V occurs.

Next, another embodiment will be described. In the above-described embodiment, the movement of the alignment plate 14 is guided by the guide rails 16 and the movement range of the alignment plate is regulated, but in the present embodiment, the alignment plate 14 is guided and the movement range is regulated. This is an example without a guide rail.

As shown in FIG. 6, the alignment plate 22 is composed of two L-shaped parts 22a and 22b.
A regulation hole 23 is formed on one side where a and 22b are joined. In addition, the leg portion 1 of the terminal 19 inserted into the regulation hole 23
9a has stopper pieces 21, 21 protruding from both sides in the width direction.
Are provided integrally.

When the terminal 19 is inserted into the restriction hole 23, the component 22 is inserted from both sides above the stopper pieces 21, 21.
The terminal 19 is inserted into the restriction hole 23 while joining a and 22b. In this state, the stopper pieces 21, 21 prevent the aligning plate 22 from falling down and regulate the moving range thereof.

[0024]

As described above, according to the present invention,
Since it is possible to insert the terminal into the printed board in a state where the leg portion of the terminal is held at the proper position at the first position by the alignment plate, the insertion is easy. In addition, at the second position where the alignment plate is lifted up as it is inserted, there is play between the restriction hole of the alignment plate and the outer circumference of the terminal. Therefore, even when performing a thermal cycle test, this play absorbs the difference in the amount of thermal expansion and contraction between the printed circuit board and the alignment plate, and as a result, the stress generated in the solder part is reduced and cracks in the solder part are effectively generated. To be prevented.

[Brief description of drawings]

FIG. 1 is an external view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of an embodiment of the present invention before use.

FIG. 3 is an enlarged view of a main part of FIG.

FIG. 4 is a cross-sectional view showing a usage state of an embodiment of the present invention.

FIG. 5 is an enlarged view of a main part of FIG.

FIG. 6 is an enlarged perspective view of a main part of another embodiment.

FIG. 7 is an external view of a conventional connector.

FIG. 8 is a sectional view of the conventional connector.

FIG. 9 is a sectional view of the conventional connector in use.

FIG. 10 is a sectional view of an essential part for explaining the problem of the conventional connector.

[Explanation of symbols]

 10 Connector 11 Connector Housing 12 Terminal 12a Leg 12b Small Diameter 13 Restriction Hole 14 Alignment Plate 15 Guide Wall 16 Guide Rail 17 Engagement Groove 18 Feet P Printed Circuit Board Pa Connection Hole

Claims (1)

[Claims] 1. A connector housing, a plurality of terminals projecting from the connector housing, each leg portion of which is inserted and connected to a connection hole of a printed circuit board, and a plurality of regulation holes corresponding to the leg portions of these terminals. The first leg of each terminal
A printed wiring board connector with a terminal aligning plate, which is inserted into the position of the terminal for aligning the terminals in proper positions, and a narrower portion thinner than the leg portion above the leg portion of each terminal. A connector for a printed wiring board with a terminal aligning plate, wherein the aligning plate is located at a second position by penetrating through the restriction hole of the aligning plate in a loosely fitted state.