JPS62254378A - Electric connector for connecting circuit board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electrical connector for connecting a printed circuit board to an electrical circuit on a printed circuit board.

2. Description of the Related Art Electrical circuits on conventional technology-based circuit boards, ie, those using a method in which electrical connector contacts are installed and connected to a circuit pattern (hereinafter referred to as a surface mount connection method) are generally known. An example of the surface mount connection method is disclosed in Japanese Utility Model Application Laid-Open No. 60-8982. The electrical connector disclosed in this publication is a connector that connects printed circuit boards at approximately right angles, and has a board insertion hole 11, as shown in FIGS. A groove 12 is formed in the bottom surface of the house 10 in a direction perpendicular to the board insertion hole 11, and a pin mounting hole 13 is provided between the groove 12 and the board insertion hole 11. Formed contact pin 1
The connector house 10 is provided with a guide part 14 which rotatably holds the vicinity of the bent part 5 and which fits into the position adjustment hole 20 of one of the printed circuit boards 19 with an appropriate amount of play. 10 is attached to one of the printed circuit boards 19, and the other printed circuit board is inserted into the insertion hole 11, so that the contact pins 15 are pressed into contact with the patterns of both printed circuit boards. It is an electrical connector. A feature of this electrical connector for connecting circuit boards is that the contact pin is held rotatably near the bent hole, making it possible to shorten the length of the contact pin without reducing the contact pressure against the pattern on the board. Therefore, it is possible to realize a compact connector, and since soldering is not required, it has the advantage of being easy to attach to the base circuit board.

Problems to be Solved by the Invention However, the conventional electrical connector for connecting a circuit board as described above has the following problems.

(1) The pin mounting hole, which holds the contact pin so that it can rotate near the bent part, has one wall in a semicircular shape and the other wall in a vertical plane. The holding takes place between the bent portion and the protruding portion 18 of the contact pin. With such a holding method, the holding accuracy is extremely vague and rough, and the position of the fulcrum around which the contact pin rotates is also vague, inconsistent, and inaccurate.

That is, the contact pin has a large play in the vertical and horizontal directions within the mounting hole. Therefore, the pressure contact force and pressure contact position for connecting the substrates become unstable and non-uniform, resulting in a lack of reliability.

(2) The contact part on the other end 17 side of the contact pin has a structure in which the regulation of leftward inclination within the board insertion hole 11 is very vague, so the contact part of the contact pin and the board insertion It is conceivable that it comes into contact with the left side wall of the hole.

Therefore, when the other printed circuit board is inserted, the contact portion of the contact pin may be crushed and deformed by the other printed circuit board.

(3) Since the contact pin is not properly held in the mounting hole 13, the contact point between the pattern and the contact pin may move due to some external force even when the contact pin is connected to the patterns on both printed circuit boards. Otherwise, electrical noise may be generated or contact resistance may fluctuate, which may adversely affect the electrical circuit.

(4) Although the other end 17 is a free end, it is not protected above it, so an insertion rod from the outside or a human fingertip may come into contact with it, causing an electrical short circuit or This may cause problems such as contact deformation.

Problems to be Solved by the Invention According to one feature of the invention, the contact portion is mounted on the surface of the base circuit board and receives and couples the contact portion to be connected in a direction substantially perpendicular to the surface of the base circuit board. An electrical connector for connecting a circuit board of the type, comprising an insulating housing and a plurality of contacts disposed in the insulating housing, and the insulating housing has an insertion hole for receiving the connected contact part. , a plurality of first contact receiving grooves spaced apart from each other along the wall surface of the insertion hole; a plurality of spaced apart second contact-receiving grooves open to each other, and a mounting hole disposed between the first contact-receiving groove and the second contact-receiving groove, each of the contacts comprising: One leg is bent in the vicinity of the mounting hole, and one leg has a first contact portion disposed in the corresponding first contact receiving groove and in contact with the connected contact portion; Part 11 is a circuit board connecting electrical connector having a second contact part disposed in the corresponding second contact receiving groove and in contact with a circuit conductor on the surface of the base circuit board. A middle part of each contact located in the mounting hole and a fulcrum means in the mounting hole are provided for pivoting the contact about the middle part, and a fulcrum means for downward movement of each contact with respect to the insulating housing. A downward movement regulating means is provided.

According to another feature of the present invention, an upper portion of each of the first contact receiving grooves of the insulating housing is arranged to engage an upper end of the first contact portion of the one leg of each of the contacts. In addition, upward and left-right movement restricting means are provided for restricting upward and left-right movement of each contact with respect to the insulating housing.

Embodiments Next, the present invention will be described in more detail with reference to embodiments of the present invention based on FIGS. 1 to 15 of the accompanying drawings.

FIG. 1 is a partially cutaway perspective view of the first embodiment of the electrical connector for connecting a circuit board according to the present invention;
FIG. G3) is a diagram similar to the second one showing the holding state of the contact in another embodiment of the present invention.

The electrical connector 100 for connecting a circuit board shown in FIG. 1 is composed of a case housing 110, a base housing 120, and a plurality of female contacts 130. The case housing 110 is made of an insulating material such as plastic, and a connector receiving portion 111 serving as a rectangular insertion hole is provided approximately at the center of the case housing 110.
is formed. On both side walls of this connector receiving portion 1110, holding grooves 112 and 112 are provided as first contact receiving grooves for arranging contact portions 131 of female contacts 130, which will be described later.

At the top of these holding grooves 113, there are female contacts 130.
A regulating hole 114 is provided as an upward and left-right movement regulating means for regulating the movement of the upper end portion 132. That is, the upper end portion 132 of the female contact
By contacting the front wall 115 and rear wall 116 of 4,
Its movement in the left-right direction and upward movement is restricted. A flange portion 117 is provided at the outer lower part of the side wall 112.112, and elastic locking protrusions 11& are formed below both ends of the flange portion 1170.

The locking protrusion 118 is locked to a locking protrusion receiving portion 123 provided on the base housing 120, so that the case housing 110 and the base housing 120 are integrated.

The base housing 120 is also made of an insulating material such as plastic like the case housing 110, and the intermediate portion 133 of the female contact 130 is received at a position corresponding to the holding groove 113 of the case housing 110.
A mounting hole 121 is provided that allows the female contact 130 to be rotatably movable. A groove 122 serving as a second contact receiving groove for receiving the connecting portion 135 of the female contact 130 is formed below the mounting hole 121 . At a position corresponding to the locking protrusion 118 of the case housing 110, a locking protrusion receiving portion 123 for receiving the locking protrusion 118 is provided.

The female contact 130 is made of a metal material that is an elastic conductive material, and the upper part thereof is bent in the shape of a box, and is connected to the female contact 2 of the mating connector 200.
A contact portion 131 that contacts the contact portion 211 of No. 10 is formed. An upper end portion 132 that is inserted into the regulation hole 114 of the case housing 110 is provided above the contact portion 131 . Further, below the contact portion 131, an intermediate portion 133 is provided which is inserted into and held in a mounting hole 121 provided in the base housing 120. Both side walls 121A of the mounting hole 121 are provided on both sides of the intermediate portion 133.
, 121A are formed with triangular projections B134 and 134 for holding and fixing the female contact 130 (see FIG. 2(G)). In addition, as another embodiment, as shown in FIG.
Step portion 121 that abuts and engages step portions 134A, 134A of
B, 121B may be provided. Below the intermediate portion 133, connection portions 135 are provided which are bent into an L-shape and are connected to the electrical pattern 301 of the base circuit board 300, and the tips of these connection portions 135 are The lower end 136 is a free end and is bent upward to improve the connection with the electrical pattern 301.

A procedure for assembling the electrical connector 100 for connecting a circuit board having such a structure and a procedure for installing it on the base circuit board 300 will be described below.

(1) Before bending the lower end 136 and connecting portion 135 of the female contact 130, each female contact material is press-fitted into the mounting hole 121 of the base housing 120 and held.

(2) Then, connect the lower end portion 136 and the connecting portion 135 to the first
It is bent by a bending tool or device as shown in the figure. At this time, the lower end portion 136 is preferably bent so as to protrude from the lower surface of the base housing 120.

(3) Next, place the case housing 110 over the female contact 130 and place the base housing 120 on top of the female contact 130.
Combine against. As a result, the female contact 13
The contact portion 131 of 0 protrudes toward the connector receiving portion 111 side of the case housing 110 and is incorporated into the contact portion 211 of the female contact 210 of the mating connector 200 so as to be able to come into contact therewith.

(4) Furthermore, in order to install the electrical connector 100 for circuit board connection assembled in this way on the base circuit board 300, the flange 1 of the electrical connector 100 for circuit board connection
1117 into the fixing screw insertion holes (not shown) provided at both ends of the base circuit board 300.
Attach to. At this time, the lower end portion 136 of the connecting portion 135 of the female contact 130 will be connected to the electrical pattern 301 of the base circuit board 300.

With the circuit board connecting electrical connector 100 attached to the base circuit board 300 in this manner, the mating connector 200 is inserted into the connector receiving portion 111 thereof. Then, the contact portion 211 of the female contact 210 of the mating connector 200 comes into contact with the contact portion 131 of the female contact 130, and the contact portion 131 is moved outward. This movement is
This attempts to cause the female contact 130 to rotate around the protrusion 134 provided on the intermediate portion 133 of the female contact 130 as a fulcrum. That is, the upper end portion 132, which is the tip of the contact portion 131, moves from the front wall 115 direction toward the rear wall 116 within the regulation hole 114 of the case housing 110 due to this rotation. Furthermore, the connecting portion 135 of the female contact 130 is about to be rotated downward about the protrusion 134 that is the fulcrum.

Therefore, the connecting portion 135 is pressed more strongly against the electrical pattern 301 of the base circuit board 300, and a more reliable electrical contact is made.

3 and 4 are partial views showing a second embodiment of the electrical connector for connecting a circuit board according to the present invention.

This embodiment is largely similar to the previous embodiment, so that
Only the different parts will be explained below.

In this embodiment, the intermediate portion 133Δ of the female contact 130A is provided with a pair of semicircular protrusions 134B cut in opposite directions in the thickness direction of the contact. A recess 12IC is provided above the mounting hole 121A of the base housing 12OA to receive the protrusion 134B of the female contactor 130A. These protrusions 134B and recesses 12IC constitute fulcrum means and downward movement restricting means in this embodiment.

With the configuration of this embodiment, the rotation of the female contactor 130A becomes smoother.

5 and 6 are views showing in detail the fulcrum means and downward movement restricting means of the electrical connector for connecting a circuit board according to the third embodiment of the present invention. Other parts are the same as in the previous embodiment. In this example, female contacts) 130
The middle part 133B of B has notches 13 at the top and bottom of both sides.
4C and 134C are provided, and substantially triangular protrusions 134D and 134D are provided which are cut up in opposite directions in the plate thickness direction of the contact and press-fit into both side walls 121A and 121A of the mounting hole of the base housing.

In this embodiment, the protrusions 134D and 1340 are
It constitutes a fulcrum means and a downward movement regulating means.

FIG. 7 is a diagram showing still another embodiment of the present invention,
In this embodiment, semicircular protrusions 134E formed on both sides of the middle part of each contactor 130C are sandwiched between the case housing 110B and the base housing 120B, thereby controlling the fulcrum means and the downward movement regulating means. giving.

FIG. 8 is a diagram showing still another embodiment of the present invention,
In this embodiment, a ball bearing 134F press-fitted into the middle part 133C of each contact is attached to the case housing 1.
By sandwiching it between the base housing 120c and the base housing 10C, it provides a fulcrum means and a means for restricting downward movement.

FIG. 9 is a drawing similar to FIG. 1 showing yet another embodiment of the present invention, in which the width dimension of the connector is reduced compared to that of the embodiment of FIG. This is what we are trying to downsize.

That is, in the embodiment shown in FIG. 1, the connection B135 of the female contact 130 is simply bent in a straight line, so the width dimension of the connector is correspondingly large. On the other hand, in the embodiment shown in FIG.
5D is bent in a C-shape and has a connecting lower end 136D.
It is designed to have the following. Therefore, the outward dimension of the connecting portion 135D can be shortened accordingly, and the width direction dimension of the entire connector can be shortened and miniaturized.

FIG. 10 is a diagram showing still another embodiment of the present invention. In the circuit board connection electrical connector 1OOE of this embodiment, the contact portion 211Δ of the contact 21OA of the mating connector 200A is connected to two opposing insulators. The insertion holes are arranged on opposite sides of the base body and have reference numbers 111E and IIIE.
As shown in FIG.
i! Two are provided to accept the Am base,
The first contact receiving groove has reference number 113ES113E
As shown in , they are arranged on adjacent sides of the two insertion holes. And those first contact receiving grooves 11
1E and the second contact receiving grooves 122E and 122H of the base housing 120E, respectively, female contacts) 1
30E is installed. In this regard, in the embodiments shown in FIGS. 1 to 9, the contact portions of the contacts of the mating connector are arranged on both sides of the insulating base, and the first contact receiving grooves are provided on both sides of the insertion hole of the case housing. It is different from how it is arranged.

FIG. 11 is a diagram showing still another embodiment of the present invention, and this embodiment is a modification of FIG. The connecting portions 135F are bent in directions that intersect with each other. By doing this, the width of the entire connector can be reduced, or the width of the base housing can be reduced, compared to the above-described embodiment in which the connecting portions of the female contacts are bent in directions away from each other. Since the depth of the second contact receiving groove is made shallow, the height of the entire connector can also be reduced.

FIG. 12 shows yet another embodiment of the invention, which is substantially the same as the embodiment shown and described in FIG. 9 except for the following points. In the embodiment shown in Fig. 9, the insulating housing is composed of two members, the case housing and the base housing, but in the embodiment shown in Fig. 12, one integral insulating housing 110G is used. There is. An example of a method for assembling the female contactor 130G into such an insulating housing 110G will be described below.

(1) Insert the unbent female contact material of the connecting portion 135G from the top of each regulation hole 114G of the insulating housing 110G, and then insert it into the mounting hole 1.
21G, and the protrusion 134G of the intermediate portion 133G is press-fitted into the wall of the attachment hole. At that time, a notch 137G is formed in the upper contact portion 131G of the female contact 130G.
, the contact portion 131G is smoothly held in the first contact receiving groove 113G by passing through the groove provided inside the regulating hole 114G.

(2) Then, using a bending tool or device, the connecting portion 13 is
5G is bent into an almost C-shape.

13 and 14 are views showing a modification of FIG. 12. In this modification, a locking projection 121H is provided in the middle of the side surface of the mounting hole of the insulating housing 110H, and a female-shaped Concave portions 134H that engage with these convex portions 121H are provided on both sides of the intermediate portion 133H of the contactor 130H. Each female contact 130H is fixedly held in the mounting hole by press-fitting the convex portion and the concave portion.

FIG. 15 is a diagram showing still another embodiment of the present invention, in which the present invention is applied when the mating connector has a female contact 210J in the form of a single blade pin or square pin. This is an example. In this embodiment as well, the female contacts 130J are fixedly held on the case housing 110J and the base housing 120J as in the previous embodiment, but the connected contact portions of these female contacts 130J are the cylindrical contact portions. It is said to be 131J.

Effects of the Invention Since the electrical connector for connecting a circuit board of the present invention has the above-described configuration, it exhibits the following effects.

(1) The contact is perfectly retained in the mounting hole.
In addition, the fulcrum for the rotation of the contact is constant within or near the mounting hole, and there is no vertical or horizontal vibration, so the contact with the mating connector and the connection to the base circuit board are stable. That's how high reliability can be obtained.

(2) The rotation of the contact part of the contact is restricted by the restriction hole in the housing, so the movement of the upper end is restricted.
Unlike conventional connectors, there is no risk of problems such as contact deformation when inserting a mating connector, and smooth coupling can be achieved.

(3) Since the rotation fulcrum of the contact is concentrated at one point, the rotation is performed smoothly, and there is no possibility of connection failure or the like occurring.

(4) The upper end of the connection part of the contact is protected by the regulation hole in the housing, so rod-shaped objects, human fingertips, etc. will not come into direct contact with the upper end, preventing electrical short circuits. There is no risk of accidents such as damage to the tip of the contact.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of the first embodiment of the electrical connector for connecting a circuit board according to the present invention; Figures similar to FIG. 2(G), FIGS. 3 and 4 showing the holding state of the contacts of another embodiment of the present invention show the second embodiment of the electrical connector for connecting a circuit board of the present invention. A partial diagram showing,
5 and 6 are diagrams showing in detail the fulcrum means and downward movement restricting means of a circuit board connecting electrical connector according to a third embodiment of the present invention, and FIG. 7 is a diagram showing a further embodiment of the present invention. FIG. 8 is a diagram showing still another embodiment of the present invention, FIG. 9 is a diagram similar to FIG. 1 showing still another embodiment of the present invention, and FIG. 11 is a diagram showing still another embodiment of the invention, FIG. 12 is a diagram showing still another embodiment of the invention, and FIG. 13 is a diagram showing still another embodiment of the invention. FIG. 14 is a diagram showing a modification of FIG. 12, FIG. 15 is a diagram showing still another embodiment of the present invention,
Part 16 is a schematic sectional view for explaining an example of a conventional electrical connector for connecting a circuit board. 100...Electrical connector for circuit board connection, 11
0...Case housing, 111...
Insertion hole, 112...Side wall, 113...
・Retaining groove, 114...Regulation hole, 115...
...front wall, 116...rear wall, 120.
...Base housing, 121...Mounting hole, 122...Groove, 200...Mating connector, 210...Female contact, 211. ...Contact part, 130...Female contact, 131...Contact part, 132...
... Upper end part, 133 ... Middle part, 134.
...Protrusion, 135...Connection, 300...Base circuit board, 301...Electric pattern. Figure 1 Figure 2 (A) (B) Figure 5 C Figure 7 Force 81 Figure 9 Figure 10 Figure 13 Figure 16 (A) (B)

Claims (20)

[Claims] (1) An electrical connector for connecting a circuit board, which is mounted on the surface of a base circuit board and receives and couples the contacts to be connected in a direction substantially perpendicular to the surface of the base circuit board, and has an insulating housing. and a plurality of contacts disposed in the insulating housing, the insulating housing having an insertion hole for receiving the connected contact portion, and a plurality of contacts provided spaced apart along the wall surface of the insertion hole. a plurality of first contact receiving grooves; a plurality of spaced apart second contact receiving grooves that communicate with the first contact receiving grooves, extend in a direction substantially perpendicular thereto, and are open to the surface of the base circuit board; A mounting hole is provided between the first contact receiving groove and the second contact receiving groove,
Each of the contacts has a bent shape in the vicinity of the mounting hole, and one of the legs has a first leg disposed in the corresponding first contact receiving groove and in contact with the connected contact portion.
a circuit having a contact portion, the other leg having a second contact portion disposed in the corresponding second contact receiving groove and in contact with a circuit conductor on the surface of the base circuit board; In the electrical connector for board connection, the intermediate portion of each contact located in the mounting hole and the mounting hole include a fulcrum means for rotating the contact about the intermediate portion, and the insulating member of each contact. 1. An electrical connector for connecting a circuit board, comprising: downward movement regulating means for regulating downward movement relative to the housing. (2) The upper part of each of the first contact receiving grooves of the insulating housing is engaged with the upper end of the first contact part of the one leg of each of the contacts, and The electrical connector for connecting a circuit board according to claim 1, further comprising upward and left-right movement regulating means for regulating upward and left-right movement with respect to the insulating housing. (3) The fulcrum means and the downward movement restricting means are constituted by approximately triangular protrusions formed on both sides of the intermediate portion of each contact and press-fitted into the wall surface of the mounting hole of the insulating housing. An electrical connector for connecting a circuit board according to claim (1) or (2). (4) The fulcrum means is constituted by a substantially triangular protrusion formed on both sides of the intermediate portion of each contact and press-fitted into the wall surface of the mounting hole of the insulative housing, and restricts the downward movement. The means is constituted by step portions formed on both sides of the intermediate portion of each of the contacts and a step portion formed on the wall portion of the mounting hole of the insulating housing. ) or (2), the electrical connector for connecting a circuit board. (5) The fulcrum means and the downward movement restricting means include a pair of semicircular protrusions cut in opposite directions in the thickness direction of the contact at the intermediate portion of each contact, and the insulating and a recess formed in the wall of the mounting hole of the housing to receive the corresponding semicircular protrusion. . (6) The fulcrum means and the downward movement restricting means are provided with cut portions at the top and bottom of both sides of the intermediate portion of each contact, and are cut out in opposite directions in the thickness direction of the contact, and are cut into the insulating housing. The electrical connector for connecting a circuit board according to claim 1 or 2, comprising a substantially triangular protrusion that is press-fitted into the wall of the mounting hole. (7) The fulcrum means and the downward movement restricting means include recesses formed on both sides of the intermediate portion of each contact;
The electrical connector for connecting a circuit board according to claim 1 or 2, further comprising a convex portion formed on the wall of the mounting hole of the insulating housing and receiving the corresponding concave portion. . (8) The circuit according to any one of claims (1) to (7), wherein the insulating housing is integrally formed including the insertion hole and the attachment hole. Electrical connector for board connection. (9) The insulating housing includes a case housing that includes the insertion hole or a portion of the insertion hole and the attachment hole;
and a base housing including the mounting hole or a part of the mounting hole.
7) Electrical connector for connecting a circuit board as described in item 7). (10) The fulcrum means and the downward movement restricting means are constructed by sandwiching semicircular protrusions formed on both sides of the intermediate portion of each contact between the case housing and the base housing. An electrical connector for connecting a circuit board according to claim (9). (11) The fulcrum means and the downward movement restricting means are constructed by sandwiching a ball bearing press-fitted into the intermediate portion of each contact between the case housing and the base housing. The electrical connector for connecting a circuit board as described in (9). (12) The upward and lateral movement regulating means is configured by a regulating hole provided in the upper part of the first contact receiving groove and having a front wall and a rear wall.
) to (11). (13) The other leg of each contact is simply bent linearly with respect to the one leg. An electrical connector for connecting a circuit board as described in . (14) The other leg of each contact is bent in a substantially C-shape with respect to the one leg. An electrical connector for connecting a circuit board as described in . (15) Among the claims (1) to (12), the other leg of each contact is bent in a substantially inverted C shape with respect to the one leg. An electrical connector for connecting a circuit board as described in any of the above. (16) The connected contact portion is disposed on both side surfaces of the insulating base, and the first contact receiving groove is disposed on both sides of the insertion hole of the insulating housing. The electrical connector for connecting a circuit board according to any one of items (1) to (15). (17) The connected contact portions are disposed on opposing side surfaces of two opposing insulating bases, and two insertion holes are provided in the insulating housing to receive the two insulating bases. The circuit according to any one of claims (1) to (15), wherein the first contact receiving groove is disposed on adjacent side surfaces of the two insertion holes. Electrical connector for board connection. (18) The other leg portion of the contact arranged in the first contact receiving groove of one row of the first contact receiving grooves arranged in the two rows, and the first contact receiving groove of the other row.
The circuit board connecting electrical device according to claim 16 or 17, wherein the other leg portion of the contact disposed in the contact receiving groove is bent in a direction away from each other. connector. (19) The other leg portion of the contact arranged in the first contact receiving groove of one row of the first contact receiving grooves arranged in the two rows, and the first contact receiving groove of the other row.
The circuit board connection electrical circuit board according to claim 16 or 17, wherein the other leg portion of the contact disposed in the contact receiving groove is bent in a direction crossing each other. connector. (20) The connected contact portion is a single blade pin or a square pin, and the first contact portion of each contact is a cylindrical contact that receives the pin. Electrical connectors for connecting circuit boards as described in Section 1.