JP2564711Y2 - Electrical connector with attached circuit board - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector for connecting a motherboard and a daughter board arranged at right angles to each other.

[0002]

2. Description of the Related Art As such an electrical connector, one shown in FIG. 4 of the accompanying drawings is known. In this known connector, a housing 50 has a substantially L-shaped cross section and includes a contact 53 having a first connection portion 52 for receiving a terminal 51 of a motherboard from the front side thereof. The first connection portion 52 is inserted into and held by a first insertion hole 54 opened in the front of the housing. The contact 53 is bent in an inverted L-shape outside the housing 50, and its lower end is inserted into an insertion hole formed in the daughter board 55 and connected to a circuit section (not shown). The second connecting portion 56 is formed. The second contact part 5
6 is inserted and held in a second insertion hole 57 formed in a portion where the housing 50 extends rearward at the lower part.

Thus, the circuit of the motherboard and the circuit of the daughter board are connected. Although a standard circuit is formed on the daughter board 55, there may be a case where it is desired to partially change the circuit. In such a case, an electronic component 58 is additionally arranged at the rear portion of the daughter board using the space on the daughter board 55, and this is dealt with by soldering the circuit of the daughter board.

[0004]

[Problems to be solved by the invention]
In a situation where miniaturization of a product is required, the daughter board must be made as small as possible, and its mounting area is not large. Therefore, the number of the electronic components that can be added increases, and there is a case where it cannot be dealt with.

When the change is made again, the soldered electronic component must be replaced with another electronic component, and the operation is extremely complicated.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problem and to provide an electrical connector having an attached circuit board that can be easily changed in circuit and does not need to expand a mounting area.

[0007]

SUMMARY OF THE INVENTION According to the present invention, the above object is achieved by a motherboard and a daughter board arranged substantially at right angles to each other.
A first connection portion for connection to the motherboard and a second connection portion corresponding to the first connection portion for connection to the daughter board , wherein the front surface and the lower surface of the housing are attached to the data board in such a manner as to face each other. In the electrical connector is provided a plurality of sets forward and downward respectively, each first connection portion and the corresponding second connection portion is formed as a separate first contact and second contact, respectively,
The first contact and the second contact are respectively inserted into a first insertion hole formed penetrating the housing from the front to the rear and a second insertion hole formed penetrating upward from the lower surface. A conductive layer is formed on the inner surfaces of the first insertion hole and the second insertion hole from at least a portion where the first contactor and the second contactor are in contact with the respective inner surfaces to an outer edge of the rear opening and an outer edge of the upper opening. A first relay terminal and a second relay terminal are respectively attached to the outer surface of the housing corresponding to the rear opening and the upper opening, and the outer surface of the housing has a contact portion with the first relay terminal and a second relay terminal. From the contact portion to the rear opening and the upper opening, the conductive pattern is formed so as to be electrically connected to the corresponding conductive layer of the first insertion hole and the conductive layer of the second insertion hole. By having a holding portion for holding an attached circuit board having a corresponding circuit portion to be connected to each of the second relay terminal and the front and back surfaces in a detachable manner above the daughter board in parallel with the daughter board. Achieved.

[0008]

The electrical connector of the present invention having such a configuration is used in the following manner.

[0009] An attached circuit board having a predetermined change circuit is selected and is held by the holding portion while being inserted between the first relay terminal and the second relay terminal.

The first contact having the first connection portion to be connected to the motherboard is connected to the corresponding circuit portion of the attached circuit board via the conductive layer in the first insertion hole, the conductive pattern, and the first relay terminal. Further, it is connected to a second relay terminal that contacts the corresponding circuit portion, a conductive pattern, a conductive layer in the second insertion hole, and a second contact having a second connection portion.

[0011] Thus, by connecting the motherboard and the daughter board by the electric connector of the present invention having the accessory circuit board, an apparatus having a predetermined change circuit can be obtained.

Further, when the circuit needs to be changed, the attached circuit board having the changed circuit may be replaced with the existing attached circuit board.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view of a cross section of the electric connector of the present embodiment, and FIG. 2 is a vertical cross section of the connector of FIG. In the drawing, three-dimensional space coordinates XYZ are set to clarify the directionality.

The insulating housing 1 of the electric connector according to the present embodiment has a stepped portion 2A for accommodating a daughter board D at a lower portion.
The main body 2 has a substantially rectangular parallelepiped shape and an extension 3 extending rearward (in the negative X direction) at a lower portion in such a manner as to be integrally engaged with each other.

The housing body 2 is formed to extend in the X direction and receive a plurality of terminals M arranged on a motherboard (not shown) at a constant pitch p in the Y direction and a constant pitch q in the Z direction. One insertion hole 4 is formed penetrating in the X direction. In the example shown in the figure, four terminals M are provided in the Z direction. In each of the first insertion holes 4, a first contact 5 for connecting to the terminal M is inserted and held. The form of the first contact 5 and the first insertion hole 4 therefor is not limited, and a well-known one is sufficient. In this embodiment, the rear portion of the first contact 5 has a thin insertion portion 5A.
The insertion portion 5A is press-fitted into a thin holding hole 4A at the rear of the first insertion hole 4. The conductive layer 6 is formed with a predetermined thickness on the inner surface of the holding hole 4A up to the outer edge of the rear opening. Therefore, when the rear portion of the first contactor 5 is press-fitted into the holding hole 4A, it bites into the conductive layer 6 to make a reliable electrical connection.

A groove 7 extending in the Y direction is formed in the upper rear portion of the housing body 1 (see FIG. 2), thereby forming a flange-like mounting edge 8 extending in the negative X direction and extending in the Y direction. I have. The holding hole 4A is attached to the mounting edge 8.
It is open to the rear. On the upper and lower surfaces of the flange-shaped mounting edge 8, mounting grooves 9 are formed on the XZ plane at a pitch of p / 4 in the Y direction including the opening position of the holding hole 4A (FIG. 3). reference). Each mounting groove 9 has a first relay terminal 10
Is fitted. The first relay terminal 10 is attached to the mounting groove 9.
U-shaped fitting portion 10A to be fitted to
(In the negative direction). The rear end of the contact portion 10B forms a tip contact portion 10C projecting downward in a semicircular shape. On the bottom surface of the mounting groove 9 and the rear end surface of the mounting edge 8, a conductive pattern 11 is formed in a strip shape at a portion that contacts the inner surface of the U-shaped fitting portion 10 </ b> A of the first relay terminal 10. . As shown in FIGS. 1 and 2, the conductive pattern 11 formed in one mounting groove 9 extends downward and is connected to the conductive layer 6 of the first insertion hole 4 of the first stage. . The conductive pattern 11 in the next mounting groove 9 adjacent to the one mounting groove extends downward and is bent laterally to be connected to the conductive layer 6 of the second insertion hole 4. Hereinafter, the conductive patterns 11 in the mounting grooves on the third and fourth surfaces are connected to the conductive layers 6 of the first insertion holes 4 on the third and fourth stages, respectively. Thus,
The conductive patterns in the four mounting grooves 11 within one pitch p in the horizontal direction are respectively connected to the conductive layers 6 of the four first insertion holes 4 arranged in the vertical direction within the pitch. These four conductive patterns are formed in a similar manner with respect to the next pitch p, and are repeatedly formed in the same manner.

Next, a second insertion hole 12 is formed in the extension portion 3 extending to the lower rear portion of the housing so as to penetrate in the Z direction and have a constant pitch p in the Y direction and a constant pitch r in the X direction. ing. A conductive layer 13 is also formed on the inner surface of the second insertion hole 12, and a second contactor 14 that is pressed into the second insertion hole 12 and extends downward is in contact with the conductive layer 13.

At the rear edge (the end in the negative X direction) of the extending portion 3 extending in the Y direction, mounting is performed at a pitch of p / 4 in the Y direction, similarly to the mounting groove 9 formed in the upper rear portion of the housing. Groove 15
(See FIG. 3), and the second relay terminal 1
6 is fitted. The second relay terminal 16 is configured such that the fitting portion 16A into the mounting groove 15 has a U-shape, and its upper portion extends in the X-positive direction, and then turns in a "-" shape in the X-negative direction and the Z-positive direction. To form a contact finger portion 16B having a contact portion 16C with a tip protruding round.
The tip contact portion 16C is the tip contact portion 10 of the first relay terminal.
It is located behind C. Similarly to the case of the mounting groove 9 at the upper rear part of the housing, a conductive pattern 17 is formed in a strip shape at the portion where the U-shaped fitting portion 16A of the second relay terminal 16 is in contact with the extending portion 3 as well. I have.

The conductive pattern 17 extends forward (in the positive X direction) from one mounting groove 15 on the upper surface of the extension 3 and is connected to the conductive layer 13 of the rearmost second insertion hole 12. The second conductive pattern 17 adjacent to the one mounting groove 15 extends forward and then bends in the horizontal direction (Y direction), and is connected to the conductive layer 13 of the second insertion hole 12 in the front. Hereinafter, the conductive patterns of the third and fourth mounting grooves 15 are sequentially connected to the conductive layers 13 of the two front insertion holes 12, respectively.

The housing body 2 has a support arm 18 extending rearward at both ends in the Y direction, and a stopper 19 having a substantially wedge-shaped cross section is formed inside the support arm 18. The support arm 1 is positioned slightly below the stopper 19 and slightly inside the support arm 18.
A safety arm 20 extending substantially parallel to 8 is provided. An attached circuit board 21 is sandwiched between the contact portions 10C and 16C of the first relay terminal 10 and the second relay terminal 16 described above, and is held together with the stopper 19 described above. On the front and back surfaces of the edge portion of the tip of the attached circuit board 21, the tip contact portions 10 of the first relay terminal 10 and the second relay terminal 16 are provided.
A conductive pattern that is in contact with C and 16C is formed as a part of the circuit unit 22, and has a predetermined change circuit (not shown).

The electrical connector of this embodiment is used and functions in the following manner.

An auxiliary circuit board 21 having a predetermined change circuit is prepared, and as shown by a two-dot chain line in FIG.
From the front end (front end) in the direction between the front end contact portions 10C and 16C of the first and second relay terminals 10 and 16 in the upper and lower rows, so that the rear end is rotated downward about the Y axis. Then, the attached circuit board 21 is held by being pushed over the stopper 19 so as to resist the reaction force moment of the tip contact portions 10C and 16C.

On the front and back surfaces of the front end portion of the attached circuit board 21, a circuit portion 22 that contacts the front end contact portions 10C and 16C of the first and second relay terminals 10 and 16 is formed as a conductive pattern. The contact 5 is a conductive pattern 1
1, the first relay terminal 10, the circuit portion of the attached circuit board 21, the second relay terminal 16, the conductive pattern 17, and the second contact 1
4 and a predetermined change circuit.

Thus, the electrical connector including the change circuit connects the motherboard and the daughter board .

When it is desired to change the above-mentioned changed circuit to another circuit, an attached circuit board including such a new changed circuit is prepared, and is replaced with the existing attached circuit board in the above-described manner.

The present invention is not limited to the above-described embodiment, but can be modified. For example, the arrangement of the first and second contacts and the opening position of their rear ends are arbitrary, and the connection therebetween can be made in any manner by the conductive pattern. Also, for example, the number of rows and columns in the arrangement of both contacts is arbitrary, and accordingly, the number of first and second relay terminals per pitch of the contacts may be changed.

[0027]

[Effect of the Invention] As described above, the present invention makes it easy to change the circuit by easily replacing the attached circuit board, and expands the mounting area of the daughter board by positioning the attached circuit board in parallel with the daughter board. This eliminates the need to do so, contributing to downsizing of the device. In addition, in the present invention, since the connection between the first and second relay terminals is made by the conductive pattern, the form is not limited, the degree of design freedom is increased, and the connection is simplified. And
Since the first and second relay terminals make elastic contact with the attached circuit board, the contact is also highly reliable.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the connector of FIG. 1 in the XZ plane.

FIG. 3 is a partially broken enlarged perspective view showing a rear part of a housing of the connector of FIG. 1;

FIG. 4 is a sectional view of a conventional connector.

[Explanation of symbols]

 Reference Signs List 1 housing 4 first insertion hole 5 first contact 6 conductive layer 10 first relay terminal 11 conductive pattern 12 second insertion hole 13 conductive layer 14 second contact 16 second relay terminal 21 attached circuit board

Claims (3)

(57) [Scope of request for utility model registration] 1. A front and lower surface of the housing substantially arranged at right angles to the motherboard and daughterboard each other within said housing mounted to face each of the connection between the first connection portion and the daughter board for connection to the motherboard In the electrical connector provided with a plurality of sets of second connection portions corresponding to the first connection portion for forward and downward, respectively, each first connection portion and the second connection portion corresponding thereto are separate first contact portions. The first contact and the second contact are respectively formed as a contact and a second contact, and the first contact and the second contact are formed so as to penetrate upward from the first insertion hole and the lower surface penetrating the housing from the front to the rear. The first insertion hole is inserted into the second insertion hole, and at least the first contact and the second contact are in contact with the inner surface of the inner surface of the first insertion hole and the second insertion hole. A conductive layer is formed from the outer edge of the rear opening to the outer edge of the upper opening, a first relay terminal and a second relay terminal are respectively attached to the housing outer surface corresponding to the rear opening and the upper opening, and the housing outer surface is From the contact portion with the first relay terminal and the contact portion with the second relay terminal to the rear opening and the upper opening, the conductive patterns correspond to the conductive layer of the first insertion hole and the conductive layer of the second insertion hole, respectively. The housing is detachably mounted on the daughter board at a position above the daughter board so that an attached circuit board having a corresponding circuit portion to be connected to the first relay terminal and the second relay terminal on each of the front and back surfaces can be detached. An electrical connector having an attached circuit board, characterized in that the electrical connector has a holding portion for holding the connector in parallel with the connector. 2. The electrical connector having an attached circuit board according to claim 1, wherein the first relay terminal and the second relay terminal support the attached circuit board on the front and back surfaces and form a part of a holding portion. . 3. The auxiliary circuit board according to claim 1, wherein the first relay terminal and the second relay terminal have a spring property and are capable of elastic contact with the auxiliary circuit board. Electrical connector.