JP2001135438A - Electric connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connector for allowing a wiring between the first connector and the second connector without going through a main substrate on a user side. SOLUTION: In an electric connector comprising the first connector 23 mounted on a main substrate 21, the second connector 24 with signals to be each switched fed directly to signal terminals thereof, and two contact sections 32 and 33 aligned side by side with each other at equal intervals, the contact sections being electrically connected to each other portions, the electric connector 20 containing an auto fuse 30 for releasing an all-time closed contact section that comes into contact with the first or the third connection pin when engaged with the above second connector, a the electric connector 20 is so constructed to cause two signal terminals 23d and 23e to be signal switched for the above first connector and the first and the third connection pins 24a and 24c to be mounted on a sub-substrate 31 having connection patterns 31a and 31b to be connected to each other.

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, for example, an audio device for a vehicle, and more particularly to an ISO standard electrical connector for connecting various signal lines together.

[0002]

2. Description of the Related Art Conventionally, such an electrical connector is configured as shown in FIG. In FIG.
The electrical connector 1 is mounted on a board 2 of an automobile audio device by, for example, solder dipping, and various signal lines, that is, a power supply, an audio signal, an ACC (Acc
essary), BUP (Back Up) and a line for a speaker are connected to the vehicle body side.

[0003] The electrical connector 1 mounted on the board 2 in this way is composed of a speaker connector 3 connected to a speaker on the vehicle body and a signal line connector 4 connected to a power supply or the like on the vehicle body. Thus, the in-vehicle speaker is connected to the in-vehicle audio device configured on the substrate 2, power is supplied to the in-vehicle audio device, and an audio signal is output to a device (not shown). It has become so.

[0004] By the way, such electrical connectors of the ISO standard are widely used in automobile manufacturers in various countries, especially in Europe. Although connectors are standardized to common ones, depending on the automobile manufacturers, the wiring of the connectors is not limited. May be different. For example, in an ISO standard electrical connector, wiring of ACC (accessory) and BUP (backup) may be reversed.

Conventionally, in order to cope with such a difference in wiring, a method of inserting a circuit conversion adapter 5 between the electric connector 1 and the signal line connector 4 as shown in FIG. Have been. The circuit conversion adapter 5 includes signal lines 5a and 5b for the ACC and BUP.
In the meantime, an intermediate detachable connection terminal is provided, and if necessary, the connection terminal is rearranged so that the ACC and the BUP can be correctly connected.

However, the use of such a circuit conversion adapter 5 to cope with an automobile manufacturer having different wiring increases the number of components, increases the cost, and requires the work of changing connection terminals. However, there is a problem that the workability is deteriorated.

On the other hand, there is also known an electrical connector in which wiring can be easily replaced as shown in FIGS. 11 to 13, for example. 11 to 13, an electric connector 10 includes a main body 12 made of a mold resin or the like placed on a main board 11 (substrate 2 in FIG. 10) on the user side.
And two sets of 8-pin connectors 13 formed in the main body 12.
a and 13b, a second connector 14 comprising a set of three-pin connectors, and an auto fuse 16 mounted on the second connector 14 (see FIGS. 11, 14 and 5). And is composed of

[0008] The first connector 13 includes two sets of 8-pin connectors 13a and 13b.
The connector for the speaker (for the B part) is configured, and the connector 13b is configured for the connector for the A part. As shown in FIG. 12, each of the connectors 13a and 13b has a contact pin 13c penetrating the back surface of the main body 12 in the front-rear direction. From below, and extends laterally (downward in FIG. 11).

The second connector 14 is composed of a set of three-pin connectors. As shown in FIG. 11 and FIG. (Rearward in FIG. 11). Here, as shown in FIG. 13, the second connector 14 is configured such that the top (first) connection pin 14a in the drawing is the first connector 1
No. 4 pin (A4) 13 of No. 3 A-part connector 13b
e, and the third connection pin 14c is connected to the seventh pin (A7) 13d of the A-part connector 13b of the first connector 13. This connection is made by a conductive pattern formed on the main board 11 on the user side. Further, in the second connector 14, the second connection pin 14b is connected to, for example, a BUP output terminal of the circuit, and is output to the user's board.

The above-mentioned contact pins 14a, 14b,
14c is formed of a conductor, and the other end is inserted into a through-hole provided in the main board 11 on the user side during mounting, and is electrically connected to the lower edge of the through-hole by soldering. At the same time, one end thereof protrudes forward inside the main body 12, and the corresponding connection terminals 15a, 15b and the auto fuse 16 (FIG.
14 and 15), the contact portions thereof can be opened.

On the other hand, among the connection pins of the second connector 14, the first and third connection pins 14a, 1
4c, a connection terminal 15 as a normally closed contact portion
a and 15b are provided. These connection terminals 15
Each of a and 15b is formed of an elastic member and has a substantially inverted U-shaped cross section as shown in FIG. The connection terminals 15a and 15b have one ends extending downward through the main body 12 and extending laterally (rearward in FIG. 11), and the other ends connecting the connection terminals 15a and 15b. The pins 14a and 14c are in elastic contact with each other. Here, the other ends of the connection terminals 15a and 15b protrude into the hollow portion 14d of the second connector 14, and when the auto fuse 16 is mounted on the second connector 14 as described later, By being pressed against the elasticity of the connection terminals 15a and 15b by the main body of the auto fuse 16 which enters the hollow portion 14d, the body is separated from the connection pins 14a and 14c of the second connector 14. I have.

One end of each of the connection terminals 15a and 15b protrudes from the side surface of the main body 12, and is inserted into a through hole provided in the main board 11 on the user side during mounting, and is inserted under the through hole. By being electrically connected by soldering at the edge, for example, it is connected to, for example, an ACC connection terminal of a circuit formed on the main board 11.

FIG. 14 shows an auto fuse 16 which is mounted on the second connector 14 to selectively short-circuit a connection pin. The auto fuse 16 itself has a known configuration and is commercially available, and includes a main body 16a that can be inserted into a hollow portion 14d opened above the second connector 14, and a Two contact portions 16b and 16c projecting downward so as to be able to contact the upper end of the conversion connection pin 14a of the two connectors 14 (FIG. 1).
4).

Here, the main body 16a is made of an insulating material and has a hollow portion 1 of the second connector 14.
When inserted into 4d, one end of each of the connection terminals 15a and 15b projecting into the hollow portion 14d is pressed to separate from the connection pins 14a and 14c. Further, the contact portion 16 of the auto fuse 16 is used.
The b and 16c are electrically connected to each other in the main body 16a or are integrally formed.

Thus, the auto fuse 16 is configured such that the two contact portions 16b and 16c are engaged with the first connection pin 14a and the second connection pin 14b of the second connector 14, or The hollow portion 14d of the second connector 14 is selectively engaged with the second connection pin 14b and the third connection pin 14c of the connector 14 of FIG.
It is inserted into and installed.

According to the electric connector 10 having such a configuration, the lower ends of the contact pins 13c, 14a, 14b, 14c and the connection pins 15a, 15b are respectively connected to the main board 11 when mounted on the main board 11 on the user side. The bottom surface of the main body 12 is placed on the upper surface of the main board 11 so as to be inserted into a through hole (not shown) provided in the main board 11. The lower ends of the contact pins 13c, 14a, 14b, 14c and the connection pins 15a, 15b are respectively connected to the main board 1 by, for example, solder dipping.
One of the through holes is soldered at a lower end thereof, and can be electrically connected to a circuit formed on the lower surface of the main board 11.

Thus, the connection terminals of the connectors 13a and 13b of the first connector 13 are connected to the connection terminals of the circuit formed on the main board 11 except for the fourth and seventh pins of the connector 13b. And the fourth pin 13e and the seventh pin 13d of the connector 13b.
As shown in FIG. 15, the first connection pin 14a and the third connection pin 1 of the second connector 14 are formed by the conductive patterns 11a and 11b formed on the main board 11.
4c. Further, the second connection pins 14b of the second connector 14 are respectively connected to BUP output terminals of a circuit configured on a board (not shown) of a car audio device or the like. Further, the connection terminals 15a,
One end of 15b is connected to an ACC connection terminal of a circuit formed on the main board 11.

The auto fuse 16 is connected to the second connector 14 in accordance with the wiring specification determined by the vehicle manufacturer for the vehicle body-side connection socket connected to the first connector 13 of the electrical connector 10. Is selectively mounted as shown. As a result, BUP and ACC are selectively connected to the fourth pin 13e or the seventh pin 13d of the A-part connector 13b of the first connector 13 according to the mounting position of the auto fuse 16.

That is, the main body 16a of the auto fuse 16 is moved so that the two contact portions 16b and 16c of the auto fuse 16 are engaged with the first and second connection pins 14a and 14b of the second connector 14. When the auto-fuse 16 is inserted into the hollow portion 14d of the conversion connector 14, the main body 16a of the auto-fuse 16 presses the other end of the connection terminal 15a to separate it from the first connection pin 14a. The first connection pin 14a and the second connection pin 14b of the second connector 14 are short-circuited by the two contact portions 16b and 16c. At this time, connection terminal 1
5b is not pressed by the main body 16a of the auto fuse 16, so that it remains in contact with the third connection pin 14c. As a result, the connection terminal 15 is connected to the seventh pin 13d of the A-part connector 13b of the first connector 13.
b, the ACC is connected, and the fourth pin 13e of the A-part connector 13b of the first connector 13 is connected to the connection pin 14b via the auto fuse 16.
The BUP output is connected more.

On the other hand, the two contacts 16b and 16c of the auto fuse 16 are engaged with the second connection pin 14b and the third connection pin 14c of the second connector 20, respectively. When the main body 16a is inserted into the hollow portion 14d of the second conversion connector 14, the main body 16a of the auto fuse 16 presses the other end of the connection terminal 15b to separate it from the third connection pin 14c, The two contact portions 16a, 1 of the auto fuse 16
6b, the second connection pin 1 of the second connector 14
4b and the third connection pin 14c are short-circuited. At this time, the connection terminal 15a is connected to the main body 1 of the auto fuse 16.
6a, the first connection pin 14a
Remains in contact with Thereby, the first connector 1
The BUP output is connected to the 7th pin 13d of the third A-part connector 13b via the auto fuse 16, and the 4th pin 13e of the A-part connector 13b of the first connector 13 is connected. , ACC is connected via the connection terminal 15a.

In the electrical connector 10 mounted on the main board 11 in this manner, a desired electrical connection is achieved by inserting the connection socket on the vehicle body side into each of the connectors 13a and 13b of the first connector 13. Could be done. That is, the 4th pin or the 7th pin of the A-part connector 13b of the first connector 13 is appropriately set to BUP and ACC according to the automobile manufacturer depending on the mounting position of the auto fuse 16 to the second connector 14. Can be set to Therefore, a connection plug on the vehicle body side can be directly connected to the first connector 13 of the electrical connector 10 without using a circuit conversion adapter, corresponding to all automobile manufacturers having different wirings. Become.

[0022]

However, in the electric connector 10 having such a structure, as shown in FIG.
The 4th pin 13e and 7th pin 13d of b and the contact pins 14a and 14c of the second connector 14 are mounted on the main board 11 on the user side.
They are electrically connected to each other via the connection pattern formed above. For this reason, the backup current supplied from the vehicle is
Output from the fourth pin 13e or the seventh pin 13d of the part connector 13b to the main board 11 on the user side,
Via the connection pattern formed on the main board 11 on the user side, the contact pins 14a of the second connector 14
Alternatively, the signal is outputted to the main board 11 on the user side from the connection terminal 15a or 15b via the auto fuse 16. Therefore, the first connector 1 is provided on the main board 11 on the user side.
No. 4 pins 13e and 7 of A-part connector 13b of No. 3
Pin 13d and contact pin 1 of second connector 14
The mounting space and through-holes for 4a and 14c are required, and a connection pattern for connecting these through-holes to each other is required.
However, there is a problem that the design of the circuit pattern in the above is restricted.

In view of the above, the present invention provides a simple and low-cost configuration so that wiring between the first connector and the second connector can be performed without passing through the main board on the user side. It is an object of the present invention to provide an electrical connector.

[0024]

SUMMARY OF THE INVENTION According to the present invention, there is provided an electronic apparatus comprising: a plurality of signal terminals;
1), and three connection pins (24) arranged at equal intervals from each other.
a), (24b) and (24c), and the first and third connection pins (24a) and (24c) are respectively used to switch two of the signal terminals of the first connector (23). Signal terminals (23d) and (23e) to be connected, and the first and third connection pins (2
4a), (24c) and normally closed contact portions (25a),
Via (25b) and a second connection pin (24b)
To the second connector (24) and two connection pins on one side or the other side of the second connector (24). Two contact portions (32) and (33) are provided at regular intervals so as to engage with each other. The two contact portions are electrically connected to each other, and the second connector (24) ), The normally closed contact portion (2) that contacts the first or third connection pin (24a) or (24c).
Auto fuse (30) for opening 5a) and (25b)
In the electrical connector (20), the two signal terminals (23d) and (23e) of the first connector (23) to be switched, and the second connector (2).
4) First and third connection pins (24a), (24
c) are connection patterns (31a) to be connected to each other,
This is achieved by an electrical connector (20), characterized in that it is mounted on a sub-board (31) with (31b).

According to the above configuration, one of the signal lines (such as a power supply, an audio signal, and a control signal) to be signal-switched is connected to the first and third connection pins of the second connector (24). (24a) and (24c) are connected via normally closed contacts (25a) and (25b), and the other signal line is connected to the second connection pin of the second connector (24). (24b), the first and third connection pins (24a) and (24c) of the second connector (24) are respectively connected to the corresponding signals of the first connector (23). Connected to terminal.

Here, the two contact portions (32) and (33) of the auto fuse (30) engage with the first and second connection pins (24a) and (24c) of the second connector (24). When the auto fuse (30) is attached to the second connector (24), the first and second connection pins (24a) and (24c) of the second connector (24) are connected to the auto fuse (30). And the normally closed contact portion (25) which is short-circuited and is in contact with the first connection pin (24a).
a) is separated from the first connection pin (24a) by the main body of the auto fuse (30). This allows
Third connection pin (24c) of second connector (24)
One signal terminal (23d) of the first connector (23) is connected to one signal line to be switched over via a normally closed contact (25b), and the second signal terminal (23d) is connected to the second signal terminal (23d). The signal terminal (2) of the first connector (23) connected to the first connection pin (24a) of the connector (24).
3e) from the second connection pin (24b) of the second connector (24) via the auto fuse (30)
The other signal line to be switched is connected.

On the other hand, the two contacts (32) and (33) of the auto fuse (30) are connected to the second connector (2).
4) Second and third connection pins (24b), (24)
When the auto fuse (30) is mounted on the second connector (24) so as to engage with the second connector (2), the second connector (2) is engaged.
4) Second and third connection pins (24b), (24)
c) is short-circuited by the auto fuse (30), and the normally closed contact portion (25b) in contact with the third connection pin (24c) is moved by the main body (31) of the auto fuse (30). It is separated from the third connection pin (24c). Thereby, the normally closed contact portion (25a) is connected to one signal terminal (23e) of the first connector (23) connected to the first connection pin (24a) of the second connector (24). One of the signal lines to be switched is connected via the second connector (24), and the corresponding signal terminal (23d) of the first connector (23) connected to the third connection pin (24c) of the second connector (24). Is connected to the other signal line to be switched over from the second connection pin (24b) of the second connector (24) via the auto fuse (30).

Therefore, when the wiring on the corresponding connector side connected to the first connector (23) is switched between the two signal lines, the auto fuse (3
By shifting the mounting position of the second connector (24) to the second connector (24), it is possible to easily cope with such a difference in wiring.

In this case, the two signal terminals (23d) and (23) of the first connector (23) to be switched.
e) and a sub-board (31) having connection patterns (31a) and (31b) to be connected to the first and third connection pins (24) and (24c) of the second connector (24). Therefore, there is no need to provide a mounting space and a through hole for these signal terminals and connection pins and a connection pattern for interconnecting them on the user-side main board (21). .
Therefore, the user-side main board (21) does not need to consider these mounting spaces, through holes and connection patterns when designing the circuit pattern.
The degree of freedom in design is increased, and the width of the circuit pattern can be increased, so that the reliability is improved. Further, by mounting the signal terminals (23d) and (23e) and the connection pins (24a) and (24c) on the sub-board (31) in advance, the electric connector (20)
Can be simplified on the user side on the main board (21). The symbols in the parentheses are provided for easy understanding, are merely examples, and the present invention is not limited to these.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. 1 to 8 show the configuration of an embodiment of the electrical connector according to the present invention.

1 to 3, the electric connector 20
Is a connector for connecting an audio device for an automobile according to ISO standard (ISO 30487-1), and a main body 22 to be mounted on a main board 21 on the user side;
A first connector 23 composed of two sets of 8-pin connectors 23a and 23b, a second connector 24 composed of a set of 3-pin connectors, and an auto fuse 30 mounted on the second connector 24. (See FIG. 7) and a sub-board 31 attached to the bottom surface of the main body 22 (see FIG. 8).

The main body 22 is formed of, for example, a mold resin, and the bottom surface (the lower surface in FIG. 1) of the main body 22 is in contact with the upper surface of the main substrate 21 when the substrate is mounted.

The first connector 23 includes two sets of 8-pin connectors 23a and 23b.
The connector for the speaker (for the B part) is configured, and the connector 23b is configured for the connector for the A part. As shown in FIG. 4, each of the connectors 23a and 23b
It has a contact pin 23c penetrating the back surface of the main body 22 in the front-rear direction and connected to the sub-board 31. (In FIG. 1, the connector 23b has seven contact pins (indicated by reference numerals A1 to A8).)

The second connector 24 is composed of a set of 3-pin connectors. As shown in FIGS. 1 and 5,
Conversion connection pins 24a, 24b, and 24c are provided at equal intervals and penetrate the back surface of the main body 22 in the front-rear direction. Here, as shown in FIG.
In the drawing, the top (first) connection pin 24a in the drawing is connected to the fourth pin (A4) 23e of the A-part connector 23b of the first connector 23, and the third connection pin 2
4c is the A-part connector 23 of the first connector 23.
It is connected to the 7th pin (A7) 23d of b. Further, the second connector 24 has a second connection pin 24b.
Penetrates the rear surface of the main body 12 in the front-rear direction and
, And is connected to, for example, a BUP output terminal of a circuit formed on the main board 21 on the user side (see also FIG. 8).

The above-mentioned contact pins 23c and connection pins 24a, 24b, 24c are formed of a conductor, and the other end extending rearward is formed from the rear surface of the main body 22 to the rear except for the contact pin 24b. Protruding,
At the time of mounting, it is inserted into a through-hole provided in the sub-board 31 so that it can be electrically connected to the lower edge of the through-hole by soldering. The connection terminals 25a, 25b and the auto fuses 30 protruding forward.
When (see FIG. 5) is connected, the contact portion can be brought into contact. The other end of the connection pin 24b penetrates the back surface of the main body 22 in the front-rear direction and extends laterally (downward in FIG. 1). The connection pin 24b is inserted through a through hole provided in the main board 21. The lower edge of the hole can be electrically connected by soldering, and one end of the hole protrudes upward inside the main body 22 to contact the corresponding contact portion 3 of the auto fuse 30.
2 or 33 can be abutted (see also FIG. 8).

On the other hand, of the connection pins of the second connector 24, the first and third connection pins 24a, 24a
4c, a connection terminal 25 as a normally closed contact portion
a and 25b are provided. These connection terminals 25
a and 25b are made of an elastic member, and have a substantially inverted U-shaped cross section as shown in FIG. One end of each of the connection terminals 25a and 25b extends rearward through the main body 20 and extends laterally (downward in FIG. 1) to be connected to the main board 21 while being connected to the other side. The ends are in elastic contact with the connection pins 24a and 24c. Here, the connection terminal 25
The other ends of the a and 25b protrude into the hollow portion 24d of the second connector 24, and when the auto fuse 30 is attached to the second connector 24 as described later, the other end portion of the auto fuse 30 is inserted into the hollow portion 24d. The main body of the entering auto fuse 30 is pressed against the elasticity of the connection terminals 25a and 25b, so that the connection pins 24 of the second connector 24 are pressed.
a, 24c.

One end of each of the connection terminals 25a and 25b protrudes downward from the back surface of the main body 22, and is inserted into a through hole provided in the main board 21 at the time of mounting. Are electrically connected by soldering, for example, to the ACC connection terminal of a circuit formed on the main board 21, for example.

FIG. 7 shows an auto fuse 30 which is attached to the above-mentioned second connector 24 to selectively short-circuit a connection pin. The auto fuse 30 itself has a known configuration and is commercially available, and includes a main body 31 that can be inserted into a hollow portion 24d opened above the second connector 24, and a Two contact portions 32 and 33 protruding downward so as to be able to contact the upper end of the conversion connection pin 24a of the two connectors 24. Here, when the main body 31 is made of an insulating material and is inserted into the hollow portion 24d of the second connector 24,
The connection terminals 25a, 2 protruding into the hollow portion 24d.
5b is pressed at one end to connect pins 24a, 24c.
It is designed to be separated from. Further, the contact portions 32 and 33 of the auto fuse 30 are electrically connected to each other or integrally formed.

Thus, the auto fuse 30 is configured such that the two contact portions 32 and 33 are engaged with the first connection pin 24a and the second connection pin 24b of the second connector 24, or The connector 24 is selectively inserted into the hollow portion 24d of the second connector 24 so as to engage with the second connection pin 24b and the third connection pin 24c of the second connector 24, and is mounted.

The above configuration is substantially the same as the conventional electrical connector 10 shown in FIGS. 11 to 15, but the electrical connector 20 according to the embodiment of the present invention is different in the following points. . That is, the sub-substrate 31 is provided so as to face the back surface of the main body 22. Sub substrate 31
Is a printed circuit board, through-holes for receiving the contact pins 23c and the connection pins 24a, 24c protruding from the rear surface of the main body 22, and conductive patterns for appropriately connecting the through-holes, particularly as shown in FIG. The connection pattern 31a for connecting the first connection pin 24a to the fourth pin (A4) 23e of the A-part connector 23b of the first connector 23, and the third connection pin 24c is connected to the A of the first connector 23. A connection pattern 31b (other wiring patterns and the like are omitted) connected to the seventh pin (A7) 23d of the part connector 23b.

The electrical connector 20 according to the embodiment of the present invention
Is configured as described above, and the lower ends of the contact pins 23c and the connection pins 24a and 24c are
The back surface of the main body 22 is placed on the top surface of the main board 21 so as to be inserted into through holes (not shown) provided in the sub-board 31, respectively. Then, the lower ends of the contact pins 23c and the connection pins 24a and 24c are soldered at the lower ends of the through holes of the sub-board 31 by, for example, solder dipping.
Can be electrically connected to a circuit formed on the lower surface of the.

Thus, the connection terminals of the connectors 23a and 23b of the first connector 23 are respectively connected to the connection terminals of the circuit formed on the sub-board 31, and the fourth pins 23e and 7 of the connector 23b are connected. Pin 23d
Are the connection patterns 31a formed on the sub-substrate 31,
The first connection pin 24a and the third connection pin 24c of the second connector 24 are connected by 31b.

When the electrical connector 20 having such a configuration is mounted on the main board 21, the lower ends of the connection pins 24b and the connection terminals 25a, 25b are respectively inserted into through holes (not shown) provided in the main board 21. So that the main body 22 is placed on the main board 21. Then, for example, by solder dipping or the like, each connection pin 2
4b and the lower ends of the connection terminals 25a and 25b are soldered at the lower ends of the through holes of the main board 21, respectively, so that they can be electrically connected to a circuit formed on the lower surface of the main board 21. . As a result, the second connection pin 24b of the second connector 24 is connected to the BUP output terminal of a circuit configured on the user-side main board 21 such as a car audio device. One end of each of the connection terminals 25a and 25b is connected to, for example, an ACC connection terminal of a circuit formed on the main board 21.

The auto-fuse 30 is connected to the second connector 24 in accordance with the wiring specification of the connection socket on the vehicle body connected to the first connector 23 of the electrical connector 20 according to the vehicle manufacturer. Is selectively mounted as shown. As a result, BUP and ACC are selectively connected to the fourth pin 23e or the seventh pin 23d of the A-part connector 23b of the first connector 23 according to the mounting position of the auto fuse 30.

That is, the main body 32 of the auto-fuse 30 is moved so that the two contact portions 32, 33 of the auto-fuse 30 engage with the first and second connection pins 24a, 24b of the second connector 24. When the auto-fuse 30 is inserted into the hollow portion 24d of the conversion connector 24 and the auto-fuse 30 is mounted on the second connector 24, the main body 32 of the auto-fuse 30 presses the other end of the connection terminal 25a and the first end. Of the second connector 24 by the two contact portions 32 and 33 of the auto fuse 30.
Short-circuit b. At this time, since the connection terminal 25b is not pressed by the main body 32 of the auto fuse 30,
It remains in contact with the third connection pin 24c. Thereby, the A-part connector 23b of the first connector 23
No. 7 pin 23d via connection terminal 25b
The ACC is connected, and the BUP output is connected from the connection pin 24b to the fourth pin 23e of the A-part connector 23b of the first connector 23 via the auto fuse 30.

On the other hand, the auto-fuse 30 is connected so that the two contact portions 32 and 33 of the auto-fuse 30 are engaged with the second connection pin 24b and the third connection pin 24c of the second connector 20, respectively. When the main body 32 is inserted into the hollow portion 24d of the second conversion connector 24 and the auto fuse 30 is mounted on the second connector 24, the main body 32 of the auto fuse 30 connects the other end of the connection terminal 25b. Press and separate from the third connection pin 24c,
By the two contact portions 32 and 33 of the auto fuse 30,
The second connection pin 24b and the third connection pin 24c of the second connector 24 are short-circuited. At this time, since the connection terminal 25a is not pressed by the main body 32 of the auto fuse 30, the connection terminal 25a remains in contact with the first connection pin 24a. Thus, the BUP output is connected to the 7th pin 23d of the A-part connector 23b of the first connector 23 via the auto fuse 30, and the A-part connector 23b of the first connector 23 is connected to the 7th pin 23d. The ACC is connected to the fourth pin 23e via the connection terminal 25a. Thus, the main board 21
The electrical connector 20 mounted on the first connector 23 has the connector 23a, 23b of the first connector 23.
, The desired electrical connection can be made.

Here, the 4th pin or the 7th pin of the A-part connector 23b of the first connector 23 is respectively connected to the second connector via the connection patterns 31a and 31b formed on the sub-board 31. 24 is connected to the first connection pin 24a or the third connection pin 24c, so that connection is not performed via a connection pattern provided on a user-side substrate as in the related art. Connection pins 24a, 24c on user-side substrate
Mounting space and conductive patterns are not required. Therefore, only the connection pins 24 and the connection terminals 25a and 25b to be finally connected to the circuit formed on the user-side main board 21 are mounted on the user-side main board 21. In the case where the main board 21 is configured to be small and inexpensive, and the same size board is used, the width of the conductive pattern forming the circuit on the user's main board 21 may be increased. it can.

In the above embodiment, the connector of the ISO standard for connecting an audio device for a vehicle has been described. However, the present invention is not limited to this, and the present invention is applied to an electrical connector that needs to be replaced in various devices. It is clear that this can be done.

[0049]

As described above, according to the present invention, the two signal terminals of the first connector to be switched and the first and third connection pins of the second connector are:
By being mounted on the sub board with the connection pattern to be connected to each other, on the user's main board,
There is no need to provide mounting space and through holes for these signal terminals and connection pins and connection patterns for interconnecting them. Therefore, the user-side main board does not need to consider these mounting spaces, through holes and connection patterns when designing the circuit pattern, so that the degree of freedom of design is increased and the width of the circuit pattern is increased. Can be widened, and the reliability is improved. Furthermore, by mounting the above signal terminals and connection pins on the sub-board in advance,
The work of mounting the electrical connector on the main board on the user side can be simplified.

Thus, according to the present invention, the wiring between the first connector and the second connector can be performed without passing through the main board on the user side with a simple and low-cost configuration. A very good electrical connector can be provided.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of an electric connector according to the present invention.

FIG. 2 is a bottom view of the electrical connector of FIG.

FIG. 3 is a right side view showing the electric connector of FIG. 1;

FIG. 4 is a sectional view taken along line Y1-Y1 of the electrical connector of FIG. 1;

FIG. 5 is a rear view of a main part of the electric connector of FIG. 1;

FIG. 6 is a schematic diagram showing a connection state of a first connector and a second connector in the electrical connector of FIG. 1;

FIG. 7 is a front view of an auto fuse connected to a second connector in the electrical connector of FIG. 1;

FIG. 8 is a schematic perspective view showing a connection state of the electrical connector of FIG. 1 to a sub-board and a main board.

FIG. 9 is a schematic diagram showing a use state of an example of a conventional electric connector.

FIG. 10 is a schematic diagram showing a use state in a case where signal lines are exchanged by the electric connector of FIG. 9;

FIG. 11 is a front view showing another example of the conventional electrical connector.

FIG. 12 is a sectional view taken along line XX of the electrical connector of FIG. 11;

FIG. 13 is a schematic enlarged view showing a connection state of a first connector and a second connector in the electrical connector of FIG. 11;

FIG. 14 is a front view of an auto fuse used in the electrical connector of FIG.

15 is a schematic perspective view showing a connection state of the electric connector of FIG. 11 to a board on a user side.

[Explanation of symbols]

 Reference Signs List 20 electrical connector 21 user-side main board 22 main body 23 first connector 23a speaker connector (8-pin connector) 23b A-part connector (8-pin connector) 23c contact pin 23d 7th pin (signal terminal) 23e 4th pin (Signal Terminal) 24 Second Connector 24a, 24b, 24c Connection Pin 25a, 25c Connection Terminal (Normal Closed Contact) 30 Auto Fuse 31 Sub-Board 31a, 31b Connection Pattern 32 Main Body 33, 34 Contact

Claims (1)

[Claims] A first connector having a plurality of signal terminals, the first connector being mounted on a main board, and three connection pins arranged at equal intervals to each other; A third connection pin is connected to each of two signal terminals to be signal-switched among the signal terminals of the first connector, and a normally closed contact portion for the first and third connection pins. And a signal to be signal-switched is supplied directly to the second connection pin via the second connector, and the second connector, the two connectors on one side or the other side of the second connector And two contact portions arranged at equal intervals so as to selectively engage with each other. When the two contact portions are electrically connected to each other and engaged with the second connector, Contact the first or third connection pin An auto fuse to open the mold contact portion includes, in electrical connectors, a signal terminal to be two signals switching of the first connector, one th and third connecting pins of the second connector,
An electrical connector mounted on a sub-board provided with a connection pattern to be connected to each other.