JPH07282921A - Board edge connector - Google Patents

Abstract

(57) [Abstract] [Purpose] To enable wiring work for a conductive pattern of a small printed circuit board to be performed easily and at low cost. When the board edge connector 1 is mounted on the peripheral edge of the printed circuit board 5, first, the partition wall 24 is slid into the guide groove 52 of the circuit board so that the peripheral edge is positioned in the circumferential direction while the opening space S is positioned. The peripheral part is received inside. The partition wall 24 is the printed circuit board 5 of the connector 1.
To the inner side of the guide groove 52 while playing the role of a guide to. If the locking projection 25 is provided on the front side of the partition wall 24 in the insertion direction into the guide groove 52, the locking projection 25 is guided to the guide groove 52 before the partition wall 24, so that the partition wall 24 is smooth. Is inserted into the guide groove 52.
Then, the contact portion 32 of the contact 3 has the conductive pattern 55.
When the lock projection 25 contacts the lock hole 53,
And is fixed to the printed circuit board 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector mounted on the peripheral portion (edge) of a small printed circuit board (board).

[0002]

2. Description of the Related Art A small printed circuit board is often used, for example, when mounting a decorative lamp for a pachinko machine or a lamp for interior lighting of an automobile. In particular, a printed circuit board of a type in which a lamp is directly inserted and held in a hole formed in the board is preferably used because it can be easily attached as a board unit to a pachinko machine or a ceiling material of an automobile. Conductive patterns on the positive electrode side and the negative electrode side are formed on the surface of such a printed circuit board. When assembling a board unit, an electric cable for connecting to a power source or the like has been soldered to the end portions of these conductive patterns.

[0003]

However, there is a problem in that such a soldering work takes time and labor, which causes a decrease in the efficiency of the whole assembly work of the board unit. There is also a problem that the manufacturing cost of the board unit is increased because a bonding material such as solder is used.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a board edge connector which enables wiring work for a conductive pattern of a small printed circuit board to be performed easily and at low cost. .

[0005]

In order to achieve the above object, the board edge connector of the present invention has an opening space capable of receiving the peripheral portion of the printed circuit board and extends in the receiving direction of the peripheral portion. The housing includes a housing having a partition wall for partitioning the opening space into a plurality of contact spaces, and a plurality of contacts held in the housing by projecting a contact portion contacting the conductive pattern of the printed circuit board in each contact space. In this connector, the partition wall is inserted into the guide groove formed in the peripheral edge portion so that the opening space receives the peripheral edge portion, and the contact portions of the contacts are formed on both sides of the guide groove. It comes in contact with the pattern.

[0006] Incidentally, when a locking projection protruding into the opening space is formed on the housing and the peripheral edge is received in the opening space, the locking projection engages with the locking hole formed in the peripheral edge. You may do it. Further, the locking projection may be located in front of the front end of the partition wall in the insertion direction into the guide groove.

[0007]

When such a board edge connector is mounted on the peripheral portion of the printed circuit board, first, the partition wall is slid into the guide groove of the circuit board and positioned in the circumferential direction of the peripheral portion so as to be positioned in the opening space. Accept the periphery. The partition wall advances to the back of the guide groove while playing the role of a guide for the printed circuit board of the connector. If a locking projection is provided on the front side of the partition wall in the direction of insertion into the guide groove, the locking projection is guided to the guide groove before the partition wall, so that the partition wall can be smoothly inserted into the guide groove. .
Then, when the contact part of the contact comes into contact with the conductive pattern of the printed circuit board, the connector is fitted to the peripheral part by strongly fitting the partition wall into the guide groove or engaging the locking projection with the locking hole. Fixed. In this way, wiring to the conductive pattern can be easily performed without requiring a bonding material.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a board edge connector according to the present invention. The board edge connector 1 includes a housing 2 formed of an electrically insulating resin and two contacts 3 and 3 formed of a conductive material and held in the housing 2. The housing 2 has a rectangular upper wall 21 and a lower wall 22 that have a required width (left-right dimension) and extend in the front-rear direction.
And side surfaces 23, 23 connecting the left and right end portions of the upper wall 21 and the lower wall 22 in the substantially rear half thereof. An opening space S is formed in the front portion between the upper wall 21 and the lower wall 22 so as to open to the front and both sides.
A notch 21a, which is a U-shaped notch toward the rear, is formed at the center of the front end of the upper wall 21 in the left-right direction. Further, a partition wall 24 that partitions the opening space S into two left and right spaces is formed rearward from the position of the rear end abutting surface of the cutout portion 21a between the upper wall 21 and the lower wall 22. The front part of each space partitioned by the partition wall 24 is referred to as contact space s1, s2, and the rear part is referred to as contact press-fit space s1 ', s2'. The contact press-fit spaces s1 'and s2' are open at the rear end surface of the housing 2. Further, the left and right end portions of the front end surface of the partition wall 24 are chamfered.

Further, the contact spaces s1 and s2 are formed on both the left and right sides of the upper wall 21 with the partition wall 24 interposed therebetween, penetrating therethrough.
Rectangular lance receiving holes 21b, 21b connected to the. On the other hand, the upper surface 22 a of the lower wall 22 has a side surface 23.
The front side portion is one step higher than the rear side portion at the front end position of the contact point 22c.
Called. ). Further, in front of the partition wall 24 on the upper surface 22a of the lower wall 22 (a position visible through the notch 21a in a plan view from above the upper wall 21), a hemisphere having a diameter substantially the same as the thickness of the partition wall 24. Shaped locking projection 25
Is formed and projects into the opening space S.

As shown in FIG. 3, the contact 3 includes a base portion 31 extending in a strip shape, a contact portion 32 formed by folding back from a front end of the base portion 31 to a rearward and obliquely lower side, and a base portion 31.
The press-fitting portion 33 that is formed by slightly expanding to the both sides from the center in the front-rear direction and then bent downward, the first sandwiching portion 34 that is bent laterally downward from the rear portion of the base 31, and the press-fitting of the base 31. It is composed of a second sandwiching portion 35 that is bent laterally downward from between the contact portion 33 and the first sandwiching portion 34. At the center of the base 31 in the front-rear direction, a lance 3 is bent obliquely upward so as to open rearward.
6 is formed.

The first of the contacts 3 thus constructed
The holding portion 34 is crimped with the vinyl covered portion of the electric cable 7 being held therebetween. The second holding portion 35 is crimped with the electric wire portion of the electric cable 7 held therebetween.
In this way, the contact 3 to which the electric cable 7 is attached
4, is inserted into the contact press-fit spaces s1 ', s2' of the housing 2 from the rear, with the contact portion 32 facing forward. The contact portion 32 of the contact 3 passes through the contact press-fitting spaces s1 ', s2' and the contact spaces s1, s2.
Project inside. The press-fitting portion 33 is the contact press-fitting space s.
It is pressed into 1'and s2 '. When the lower front end of the press-fitting portion 33 contacts the contact surface 22c of the housing 2, the lance 36, which has been elastically deformed by contacting the upper wall 21 of the housing 2 until then, projects into the lance receiving hole 21b. As a result, the contact 3 is held in the housing 2 while being positioned in the front-rear direction, and the assembly of the connector 1 is completed. The contact 3 held in the housing 2
The position of the front end of is substantially the same as the position of the front end face of the partition wall 24.

The connector 1 assembled in this way
As shown in FIG. 1, the front portion is connected to the connector connecting portion 51 formed on the peripheral portion of the printed circuit board 5. Here, the printed circuit board 5 is formed to have a bifurcated shape as shown in FIG. 5, and one arm (left arm) of the bifurcation extends longer than the other arm (right arm). The tip of the left arm is cut linearly, and the tip of the right arm is cut semicircular. Then, a lamp holding hole 56 is formed in the middle part of the left arm and the tip part of the right arm, and a decorative lamp (not shown) for a pachinko machine is fitted therein. Wiring patterns (not shown) on the positive electrode side and the negative electrode side for these decorative lamps are formed on the surface of the printed circuit board 5. Further, an IC or the like for controlling the blinking of the lamp is attached to the surface of the printed circuit board 5. In addition,
Mounting holes 57 for mounting to the pachinko machine are formed on the left and right of the base end portion of the printed circuit board 5.

The above-mentioned connector connecting portion 51 is formed on the tip portion (peripheral portion) of the left arm. The connector connecting portion 51 has a width approximately the same as the thickness of the partition wall 24, and has a notch groove 52 that is cut out in a vertically long U-shape in the direction of the base of the left arm, and the base of the notch groove 52 from the end. A hole (through hole) 53 for locking formed at a position slightly separated in the direction having an inner diameter substantially the same as the width of the notch groove 52, and the notch groove 52 as a part of the wiring pattern of each pole. It is composed of external contact portions 55, 55 formed on the left and right.

When the connector 1 is connected to the connector connecting portion 51, first, as shown in FIG. 6A, the locking protrusion 25 is slid into the cutout groove 52 while being inserted into the opening space S. Receive the tip of 51. As a result, the connector 1 can be roughly positioned in the lateral direction (circumferential direction) with respect to the connector connecting portion 51, and the partition wall 24 can be smoothly inserted into the notch groove 52. When the connector connection portion 51 is deeply received, as shown in FIG.
As shown in (B), the partition wall 24 is guided by the inner side surface of the cutout groove 52 to ensure the lateral positioning of the connector 1, and the contact portion 32 of each contact 3 is placed on the upper surface of the outer contact portion 55. Slip on this while elastically deforming in contact with. When the front end of the partition wall 24 reaches near the end of the cutout groove 52, as shown in FIG.
5 plungely engages with the locking hole 53. As a result, the connector connecting portion 51 of the connector 1 is reliably positioned in the front-rear direction, and the connector 1 cannot easily come off from here. Whether or not the locking projection 25 is engaged with the locking hole 53 can be confirmed from above the connector 1 (upper wall 21) through the cutout portion 21a as indicated by an arrow P.

In the above embodiment, the printed circuit board to which the connector according to the present invention is connected is the board for the decorative lamp of the pachinko machine. However, it goes without saying that this connector can be connected to other printed circuit boards. Is.

[0016]

As described above, the board edge connector of the present invention receives the peripheral portion of the printed circuit board in the opening space and directly contacts the conductive pattern formed on the peripheral portion. Therefore, if this board edge connector is used, wiring to the conductive pattern can be easily performed without using a bonding material such as solder. In the process of connecting to the peripheral portion of the printed circuit board, since the partition wall formed in the housing is guided by the guide groove formed in the peripheral portion, it is easy to position the peripheral portion of the connector in the circumferential direction. You can do it.
If a locking projection is provided on the front side of the partition wall in the direction of insertion into the guide groove, this locking projection will be guided to the guide groove before the partition wall, so insertion into the guide groove of the partition wall will be smoother. You can do it. When the locking projection is engaged with the locking hole formed in the peripheral portion at the time of completion of the connection, the peripheral portion of the connector is positioned in the depth direction, and at the same time the printed board of the connector is removed. It can be surely prevented from falling off.

[Brief description of drawings]

FIG. 1 is a perspective view of a board edge connector according to the present invention.

2A is a side sectional view of a housing of the board edge connector, and FIG. 2B is a front view of the housing.

FIG. 3 is a perspective view of a contact of the connector.

FIG. 4 is a side sectional view of the connector in an assembled state.

FIG. 5 is a plan view of a printed circuit board.

FIG. 6 is an explanatory view of the connection between the connector and the printed circuit board.

FIG. 7 is a side sectional view of the connection state between the connector and the printed circuit board.

[Explanation of symbols]

 1 Board Edge Connector 2 Housing 24 Partition Wall 25 Lock Protrusion 3 Contact 5 Printed Circuit Board 52 Guide Groove 53 Lock Hole 55 External Connection Part (of Conductive Pattern) S Open Space s1, s2 Contact Space

Claims (3)

[Claims] 1. A housing having an opening space capable of receiving a peripheral portion of a printed circuit board and having a partition wall extending in a receiving direction of the peripheral portion to partition the opening space into a plurality of contact spaces, and the peripheral portion. A plurality of contacts that are held in the housing by projecting a contact portion capable of contacting the conductive pattern formed in the contact space, and the partition wall in the guide groove formed by cutting out in the peripheral portion. A board edge connector, wherein the board edge connector is inserted to receive the peripheral edge portion in the opening space, and the contact portions contact the conductive patterns formed on both sides of the guide groove. 2. A locking projection formed on the peripheral portion when the housing is formed with a locking projection protruding into the opening space, and the peripheral edge portion is received in the opening space. The board edge connector according to claim 1, wherein the board edge connector is adapted to be inserted into and engaged with the hole. 3. The board edge connector according to claim 2, wherein the locking projection is located in front of a front end of the partition wall in the insertion direction into the guide groove.