JP6966349B2 - Joint connector structure - Google Patents

Description

The present invention relates to a joint connector structure.

A joint connector is used as a processing method for connecting a plurality of circuits in an automobile or the like (see, for example, Patent Documents 1 and 2). In the joint connector of Patent Document 1, a plurality of electric wires from each electric system installed on the driver's seat side of an automobile or the like are collectively combined with a grounding electric wire (body earth grounding electric wire) drawn from the engine room side. It is electrically connected. Further, in the vehicle-mounted multiplex communication device of Patent Document 2, in order to prevent reflection at the terminal portion of the main line circuit, a terminating resistor circuit is provided at the terminal portion and further grounded to the body. In this case, the terminating resistance circuit unit of the joint connector is detachable. In the terminating resistor circuit unit, one end is connected between the first resistor, the second resistor connected in series with the first resistor, and the first and second resistors, and the other end is grounded. Has a capacitor to be. The other end of the capacitor is grounded by separately connecting a body ground grounding wire to the joint connector.

Japanese Unexamined Patent Publication No. 7-161419 Japanese Patent Application Laid-Open No. 2003-204340

However, since the conventional joint connector is indispensably provided with a dedicated fitting structure (earth terminal holding portion, etc.) for connecting the body ground grounding wire, it is difficult to standardize the parts and the versatility is low. Further, in the conventional joint connector, a plurality of electric wires are collectively electrically connected to the grounding electric wire (body earth grounding electric wire) pulled out from the engine room side, or the body earth grounding electric wire is separately connected. As the number of parts increased, the number of steps required to connect the grounding wire was increased.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a joint connector structure capable of reducing the number of body ground grounding wires and sharing parts.

The above object according to the present invention is achieved by the following configuration.
(1) One end is connected between the first resistor, the second resistor connected in series with the first resistor, and the first resistor and the second resistor, and the other end is grounded. A ground connector having a capacitor, a connector connected to an electronic control device, a dummy connector having no terminal, and at least one branch in which an electric contact portion is arranged in common with a plurality of shared cavities and the shared cavities. A joint connector comprising a ground connector, a connector, and a joint connector body that allows connection of different circuits by optionally fitting the dummy connector into the common cavity. structure.

According to the joint connector structure having the configuration of (1) above, by fitting any of the ground connector, the connector, and the dummy connector into the common cavity of the joint connector main body, the function can be changed according to the place of use (application). Can be made to. That is, the ground connector having a built-in terminating resistor circuit composed of a first resistor, a second resistor, and a capacitor can be fitted to the joint connector main body. This makes it possible to use a joint connector body that is common to both the joint connector that requires a terminating resistance circuit and the intermediate joint connector that does not require a terminating resistance circuit. As a result, the same joint connector main body can be used even when the joint connector main body is made to function in different places, and the joint connector main body can be shared and versatility can be enhanced. Further, when the number of electronic control devices is small due to vehicle type specifications and the number of poles of branch terminals is excessive, a dummy connector having no connector function can be fitted into the common cavity of the joint connector main body. In this case, the dummy connector also functions as a terminal protection member of the joint connector main body.

(2) The joint connector structure according to (1) above, characterized in that the ground connector, the connector, and the dummy connector fitted in the common cavity are provided with fixing means for a fixed portion. Joint connector structure.

According to the joint connector structure having the configuration of (2) above, the ground connector, the connector, and the dummy connector are provided with fixing means for a fixed portion such as a vehicle body or a wire harness, so that one of these connectors provided with fixing means is provided. When one is fitted into the common cavity of the joint connector main body, the joint connector main body can be fixed to the fixed portion via the fixing means. Further, the joint connector having this configuration can be insulated and fixed to the fixed portion by fitting a dummy connector having no terminal into the joint connector main body.

(3) In the joint connector structure according to (2) above, the fixing means of the ground connector has a capacitor connection portion connected to the capacitor formed at one end and the fixing means at the other end. A joint connector structure characterized in that it is provided on a sheet metal member having a conduction fixing plate portion in contact with a metal surface of the fixed portion.

According to the joint connector structure having the configuration of (3) above, the joint connector can be conductively fixed to the fixed portion via the conduction fixing plate portion of the ground connector without separately providing the body ground grounding wire.
That is, in the ground connector of this configuration, the terminating resistor circuit is connected to the conduction fixing plate portion (LA terminal portion) of the sheet metal member via a capacitor. The earth connector fitted in the common cavity of the joint connector body fixes the branch terminal of the joint connector by fastening and fixing the conduction fixing plate part of the earth connector locked to the joint connector body to the fixed part. It is possible to fix the continuity to the part. As a result, the number of body ground grounding wires for the terminating resistor circuit can be reduced.

According to the joint connector structure according to the present invention, it is possible to reduce the number of wires for grounding the body ground and standardize the parts.

The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments described below (hereinafter referred to as "embodiments") with reference to the accompanying drawings. ..

It is a conceptual diagram which shows an example of the multiplex communication circuit which used the joint connector which has the joint connector structure which concerns on embodiment of this invention. It is an overall block diagram which showed an example of the multiplex communication circuit shown in FIG. 1 more concretely. It is an exploded perspective view of the end joint connector shown in FIG. FIG. 3 is an exploded perspective view of a main part of the ground connector shown in FIG. It is an exploded perspective view of the intermediate part joint connector shown in FIG. (A) is a perspective view of an intermediate joint connector according to a modified example in which the fixing means is a bolt fixing hole, and (b) is an exploded perspective view of (a). (A) is a perspective view of an intermediate joint connector according to a modified example in which the fixing means is a band clamp, and (b) is an exploded perspective view of (a). (A) is a perspective view of an intermediate joint connector provided with a dummy connector, and (b) is an exploded perspective view of (a). (A) is a perspective view of an intermediate joint connector provided with a dummy connector according to a modified example in which the fixing means is a bolt fixing hole, and (b) is an exploded perspective view of (a).

Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
FIG. 1 is a conceptual diagram showing an example of a multiplex communication circuit 13 in which a joint connector 11 having a joint connector structure according to an embodiment of the present invention is used.
The joint connector 11 according to the present embodiment can be suitably used for the multiplex communication circuit 13. As shown in FIG. 1, for example, the multiplex communication circuit 13 is arranged over the engine room 15, the occupant room 17, the trunk room, and the like in the vehicle body 1 which is a fixed portion. In the multiplex communication circuit 13, a plurality of intermediate portion joint connectors 23 and intermediate portion joint connectors 25 are interposed between the terminal portion joint connector 19 and the terminal portion joint connector 21. A plurality of electronic control units 27 (ECUs) for controlling various auxiliary machines are connected to each of the terminal joint connector 19, the intermediate joint connector 23, the intermediate joint connector 25, and the terminal joint connector 21.

FIG. 2 is an overall configuration diagram showing an example of the multiplex communication circuit 13 shown in FIG. 1 more concretely.
The joint connector 11 according to the present embodiment can be used as the terminal joint connector 19, the intermediate joint connector 23, the intermediate joint connector 25, and the terminal joint connector 21.

The joint connector 11 having a joint connector structure according to the present embodiment includes any one of a ground connector 29, a female connector (connector) 67, and a dummy connector 33 (see FIG. 8), a connector 31, and a joint connector main body. It has 35 as a basic configuration. That is, as shown in FIG. 2, the terminal joint connector 19 and the terminal joint connector 21 include a ground connector 29 and a plurality of connectors 31 together with the joint connector main body 35, and the intermediate joint connector 23 and the intermediate joint. The connector 25 includes a female connector 67 and a plurality of connectors 31 together with the joint connector main body 35.

FIG. 3 is an exploded perspective view of the end joint connector 19 shown in FIG.
As shown in FIG. 3, the terminal joint connector 19 and the terminal joint connector 21 according to the present embodiment have a ground connector 29, a plurality of connectors 31, and a joint connector main body 35. Since the terminal joint connector 19 and the terminal joint connector 21 have the same configuration, the terminal joint connector 19 will be described as a representative example. In the terminal joint connector 19, one ground connector 29 and a plurality (four) connectors 31 are fitted to the joint connector main body 35.

The joint connector main body 35 according to the present embodiment is formed of, for example, a rectangular parallelepiped with an electrically insulating synthetic resin. A plurality of (five in this embodiment) shared cavities 37 having the same fitting structure are formed side by side in the joint connector main body 35. Any of the ground connector 29, the connector 31, the dummy connector 33, and the female connector 67 can be fitted into one common cavity 37. The joint connector body 35 includes at least one branching terminal 41 (see FIG. 4) having a plurality of (five in this embodiment) electrical contact portions 39. In this embodiment, two branch terminals 41 are provided. In the branch terminal 41, each electrical contact portion 39 is arranged in common in each common cavity 37. The joint connector main body 35 allows connection of different circuits by optionally fitting the ground connector 29, the connector 31, the dummy connector 33, and the female connector 67 into the common cavity 37.

A lock claw 43 is formed on each of the ground connector 29, the connector 31, the dummy connector 33, and the female connector 67 according to the present embodiment. The lock claw 43 is locked and locked to a locked portion (not shown) formed in each common cavity 37 of the joint connector main body 35.

The connector 31 and the female connector 67 of the present embodiment are connected to an electric contact portion 39 arranged in each of the common cavities 37, and are electrically connected to the electronic control device 27 or electrically between a plurality of joint connector main bodies 35. It is also used as a connector for a relay circuit to be connected.

Further, the ground connector 29, the female connector 67, and the dummy connector 33 fitted in the common cavity 37 are provided with fixing means for the vehicle body 1 or the wire harness 45 (see FIG. 7) to be fixed.

FIG. 4 is an exploded perspective view of a main part of the ground connector 29 shown in FIG.
The ground connector 29 according to the present embodiment has a first resistor 47 and a second resistor 49 connected in series with the first resistor 47. Both ends of the first resistor 47 and the second resistor 49 connected in series form terminal portions 51, respectively. The terminal portion 51 is electrically connected to the electrical contact portion 39 of the branching terminal 41. In the ground connector 29, one end of the capacitor 53 is connected between the first resistor 47 and the second resistor 49. The other end of the capacitor 53 is grounded to the vehicle body 1 from the conduction fixing plate portion 57 described later.

As shown in FIG. 3, in the ground connector 29 of the present embodiment, fixing means to the vehicle body 1 is provided on the conduction fixing plate portion 57 of the sheet metal member 55. A capacitor connecting portion 59 connected to the capacitor 53 is formed at one end of the conduction fixing plate portion 57. At the other end of the sheet metal member 55, a conduction fixing plate portion 57 in contact with the metal surface of the vehicle body 1 is formed. The capacitor connection portion 59 and the conduction fixing plate portion 57 are formed by being bent into an L shape by pressing a conductive metal plate. A bolt fixing hole 63 is formed in the conduction fixing plate portion 57 as a fixing means through which the bolt 61 is inserted. A positioning protrusion 65 for the positioning hole 4 of the vehicle body 1 is bent and formed on the opposite side of the capacitor connection portion 59 with the bolt fixing hole 63 interposed therebetween.

FIG. 5 is an exploded perspective view of the intermediate joint connector 23 shown in FIG.
As shown in FIG. 5, the intermediate portion joint connector 23 and the intermediate portion joint connector 25 according to the present embodiment have a female connector 67, a plurality of connectors 31, and a joint connector main body 35. Since the intermediate portion joint connector 23 and the intermediate portion joint connector 25 have the same configuration, the intermediate portion joint connector 23 will be described as a representative example. In the intermediate portion joint connector 23, one female connector 67 and a plurality (four) connectors 31 are fitted to the joint connector main body 35.

As shown in FIG. 5, in the female connector 67 of the present embodiment, a rectangular plate-shaped vehicle body fixing portion 69 provided with fixing means to the vehicle body 1 is integrally resin-molded in a female connector housing having the same structure as the connector 31. .. The same terminals as the connector 31 are mounted on the female connector housing. That is, the female connector 67 has a configuration in which the vehicle body fixing portion 69 is integrally provided with the connector 31. A resin clamp 71 as a fixing means to be locked to the vehicle body side fixing hole 6 drilled in the vehicle body 1 is projected from the vehicle body fixing portion 69. The joint connector main body 35 fitted with the plurality of connectors 31 is insulated and fixed to the vehicle body 1 via the resin clamp 71 of the vehicle body fixing portion 69 in the female connector 67 fitted to the common cavity 37.

6 (a) is a perspective view of an intermediate joint connector 73 according to a modified example in which the fixing means is a bolt fixing hole 63, and FIG. 6 (b) is an exploded perspective view of (a).
The intermediate portion joint connector 73 according to the modified example shown in FIG. 6 is provided with a bolt fixing hole 63 in the vehicle body fixing portion 69A instead of the resin clamp 71. In the intermediate portion joint connector 73, the vehicle body fixing portion 69A of the female connector 67A fitted to the joint connector main body 35 is fixed to the vehicle body side screw hole 2 of the vehicle body 1 by a bolt 61, and is insulated and fixed to the vehicle body 1. ..

7 (a) is a perspective view of an intermediate joint connector 77 according to a modified example in which the fixing means is a band clamp 75, and FIG. 7 (b) is an exploded perspective view of (a).
The female connector 79 of the intermediate portion joint connector 77 according to the modification shown in FIG. 7 is provided with a band clamp 75 as a fixing means in the vehicle body fixing portion 69B instead of the resin clamp 71. In the female connector 79, a rectangular plate-shaped vehicle body fixing portion 69B provided with fixing means for the vehicle body 1 is integrally resin-molded in a female connector housing having the same structure as the connector 31.

The base end of the band 81 whose tip is a free end is fixed to the vehicle body fixing portion 69B. A locking hole 82 through which the tip of the band 81 is inserted is formed in the vehicle body fixing portion 69B. The locking hole 82 regulates the insertion of the inserted band 81 with a locking claw or the like. The locking claw regulates the back slip of the band 81 by locking the minute locking uneven portion 83 formed on the surface of the band 81. In the intermediate portion joint connector 77, the vehicle body fixing portion 69B of the female connector 79 fitted to the joint connector main body 35 is wound around the wire harness 45 by the band clamp 75 and is insulated and fixed.

In the wire harness 45, a plurality of electric wires 85 are bundled by tape winding. A plurality of electric wires 85 are pulled out from between the tapes 87. A connector 31 and a female connector 79 are connected to the electric wire 85 drawn from the wire harness 45. The connector 31 and the female connector 79 are fitted into the common cavity 37 of the joint connector main body 35, respectively.

8 (a) is a perspective view of an intermediate joint connector 89 provided with a dummy connector 33, and FIG. 8 (b) is an exploded perspective view of (a).
As shown in FIG. 8, a dummy connector 33 having no terminal can be fitted to the joint connector main body 35. In the dummy connector 33, a rectangular plate-shaped vehicle body fixing portion 69 provided with fixing means to the vehicle body 1 is integrally resin-molded. A resin clamp 71 as a fixing means to be locked to the vehicle body side fixing hole 6 drilled in the vehicle body 1 is projected from the vehicle body fixing portion 69. Therefore, the intermediate portion joint connector 89 is attached to the vehicle body 1 by fixing the vehicle body fixing portion 69 of the dummy connector 33 fitted in the common cavity 37 of the joint connector main body 35 to the vehicle body side fixing hole 6 by the resin clamp 71. On the other hand, it is insulated and fixed.

9 (a) is a perspective view of an intermediate joint connector 91 provided with a dummy connector 33A according to a modified example in which the fixing means is a bolt fixing hole 63, and FIG. 9 (b) is an exploded perspective view of (a).
The dummy connector 33A is provided with a bolt fixing hole 63 as a fixing means in the vehicle body fixing portion 69A instead of the resin clamp 71. Therefore, in the intermediate portion joint connector 91, the vehicle body fixing portion 69A of the dummy connector 33A fitted in the common cavity 37 of the joint connector main body 35 is fixed to the vehicle body side screw hole 2 of the vehicle body 1 by the bolt 61, whereby the vehicle body is fixed. Insulated and fixed with respect to 1.

Next, the operation of the above configuration will be described.
In the joint connector 11 having the joint connector structure according to the present embodiment, any one of the ground connector 29, the female connector 67 (67A), and the dummy connector 33 (33A) is fitted into the common cavity 37 of the joint connector main body 35. As a result, it can be made to function according to the place of use (use).

That is, the ground connector 29 having a built-in terminating resistor circuit composed of the first resistor 47, the second resistor 49, and the capacitor 53 can be fitted to the joint connector main body 35. As a result, as shown in FIG. 2, the terminal joint connectors 19 and 21 which are joint connectors 11 which require a terminating resistance circuit and the intermediate joint connectors 23 and 25 which are joint connectors 11 which do not require a terminating resistance circuit. A common joint connector body 35 can be used for both.

As a result, even if the joint connector 11 functions in different places, the same joint connector main body 35 can be used, and the joint connector main body 35 can be shared to enhance versatility. can.

If the number of electronic control devices 27 is small due to vehicle type specifications and the number of poles of the branch terminal 41 is excessive, a dummy connector 33 (33A) having no connector function is fitted into the common cavity 37 of the joint connector main body 35. You can also do it. In this case, the dummy connector 33 (33A) also functions as a terminal protection member of the joint connector main body 35.

Further, in the joint connector 11 according to the present embodiment, the ground connector 29, the female connector 67 (67A, 79), and the dummy connector 33 (33A) are fixing means to the vehicle body 1 or the wire harness 45 which is the fixed portion. By providing the bolt fixing hole 63, the resin clamp 71 and the band clamp 75, when one of these is fitted into the common cavity 37 of the joint connector main body 35, it is attached to the vehicle body 1 or the wire harness 45 via the fixing means thereof. The joint connector main body 35 can be fixed. For example, in the joint connector 11 of the present embodiment, as shown in FIGS. 8 and 9, a dummy connector 33 (33A) having no terminal is fitted to the joint connector main body 35 to fit the intermediate joint connector 89 (91). If the above is configured, it can be insulated and fixed to the vehicle body 1 by the bolt fixing hole 63 or the resin clamp 71 provided in the dummy connector 33 (33A).

Further, in the terminal joint connector 19 (21) as the joint connector 11 according to the present embodiment, the terminal portion is connected to the vehicle body 1 via the conduction fixing plate portion 57 of the ground connector 29 without separately providing the body ground grounding wire. The joint connector 19 (21) can be conductively fixed.

That is, in the ground connector 29 according to the present embodiment, the terminating resistor circuit is connected to the conduction fixing plate portion 57 (LA terminal portion) of the sheet metal member 55 via the capacitor 53. The earth connector 29 fitted in the common cavity 37 of the joint connector main body 35 is a terminal joint connector by fastening and fixing the conduction fixing plate portion 57 of the earth connector 29 locked to the joint connector main body 35 to the vehicle body 1 hebolt. The branching terminal 41 of 19 (21) can be electrically and fixed to the vehicle body 1. As a result, the number of body ground grounding wires for the terminating resistor circuit can be reduced.

Therefore, according to the joint connector 11 having the joint connector structure according to the present embodiment, the number of body ground grounding wires can be reduced and the parts can be shared.

The present invention is not limited to the above-described embodiment, and can be modified or applied by those skilled in the art based on the mutual combination of the configurations of the embodiments, the description of the specification, and the well-known technique. The invention is planned and is included in the scope for which protection is sought.

For example, in the above configuration example, an example in which the ground connector 29, the female connector 67 (67A, 79), and the dummy connector 33 (33A) are fitted into the common cavity 37 at the end of the joint connector main body 35 has been illustrated. The ground connector 29 or the like may be fitted into the common cavity 37 in the center of the joint connector main body 35. Further, although the joint connector main body 35 exemplifies a plurality of shared cavities 37 arranged in the same direction, the joint connector main body may have the shared cavities arranged in different directions.

Here, the features of the above-described embodiments of the joint connector structure according to the present invention are briefly summarized and listed below in [1] to [3], respectively.
[1] A first resistor (47), a second resistor (49) connected in series with the first resistor (47), and these first resistors (47) and second resistors (49). A ground connector (29) having a capacitor (53) with one end connected and the other end grounded between).
A connector (female connector 67) connected to the electronic control device (27) and
A dummy connector (33, 33A) having no terminal (terminal portion 51) and
It has at least one branch terminal (41) in which an electric contact portion (39) is arranged in common with a plurality of common cavities (37) and the common cavity (37), and the ground connector (29) and the connector. (Female connector 67) and a joint connector main body (35) that allows connection of different circuits by arbitrarily fitting the dummy connectors (33, 33A) into the common cavity (37).
A joint connector structure characterized by being equipped with.
[2] The joint connector structure according to the above [1].
The ground connector (29), the connector (female connector 67), and the dummy connectors (33, 33A) fitted in the common cavity (37) are fixed to the fixed portion (vehicle body 1, wire harness 45). A joint connector structure comprising means (bolt fixing hole 63, resin clamp 71, band clamp 75).
[3] The joint connector structure according to the above [2].
The fixing means (bolt fixing hole 63) of the ground connector (29) has a capacitor connection portion (59) connected to the capacitor (53) formed at one end thereof, and is fixed at the other end. A joint connector structure characterized in that it is provided on a sheet metal member (55) having a conduction fixing plate portion (57) in contact with a metal surface of the portion (vehicle body 1).

1 ... Body (fixed part)
11 ... Joint connector 19 ... Termination joint connector 21 ... Termination joint connector 27 ... Electronic control device 29 ... Earth connector 33 ... Dummy connector 35 ... Joint connector body 37 ... Shared cavity 39 ... Electrical contact section 41 ... Branching terminal 45 ... Wire harness 47 ... First resistance 49 ... Second resistance 53 ... Condenser 55 ... Sheet metal member 57 ... Conduction fixing plate portion 59 ... Condenser connection portion 63 ... Bolt fixing hole (fixing means)
67 ... Female connector (connector)
71 ... Resin clamp (fixing means)
75 ... Band clamp (fixing means)

Claims (3)

A first resistor, a second resistor connected in series with this first resistor, and a capacitor with one end connected between these first and second resistors and the other end grounded. With a ground connector,
The connector connected to the electronic control device and
With a dummy connector that does not have a terminal,
It has a plurality of common cavities and at least one branch terminal in which an electric contact portion is arranged in common with the common cavity, and the ground connector, the connector, and the dummy connector are optionally fitted into the common cavity. The joint connector body, which allows the connection of different circuits, and
A joint connector structure characterized by being equipped with. The joint connector structure according to claim 1.
The ground connector, the connector, and the dummy connector fitted in the common cavity have a joint connector structure including a fixing means for a fixed portion. The joint connector structure according to claim 2.
The fixing means included in the ground connector is a sheet metal member having a capacitor connecting portion connected to the capacitor formed at one end and a conduction fixing plate portion having a conduction fixing plate portion in contact with the metal surface of the fixed portion at the other end. A joint connector structure characterized by being provided in.

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