JPH10172644A - Waterproof connector for electronic control unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof connector of an electronic control unit with which the height of a male connector can be lowered and at the same time the number of parts can be lessened. SOLUTION: This waterproof connector is one which connects an electronic control unit and a wire harness. The electronic control unit comprises a box-like case 12 having an aperture 12a and a cover 13 to close the aperture 12a of the case is installed and a printed circuit 3d is stuck to the inner face 13a of the cover 13 and at the same time an insertion hole 13c into which the rear part 14a of a male connector 14 can be inserted in the direction from the outer face 13b is formed in the cover 13 to directly connect the male terminal 15 of the male connector 14 projected in the case 12 out of the insertion hole 13c with the printed circuit 3d and on the other hand, a seal ring 6b to be closely attached to the outer face 13b of the cover 13 when inserted into the insertion hole 13c is installed in the rear part 14a of the male connector 14. A pushing regulating part 14c to regulate and prevent the seal ring 6b from being excessively pushed to the outer face 13b of the cover 13 is installed in the rear part 14a of the male connector 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic control unit most suitable for integrating with an ABS (Anti-Lock Brake System), an EFI (Electronic Fuel Injection) or the like mounted in an engine room of an automobile. Related to waterproof connectors.

[0002]

2. Description of the Related Art In recent years, the types of electronic control units in automobiles have been increasing along with their high performance, and it is desired to secure a wide space in the vehicle compartment in which these electronic control units are arranged. There is a request.

Conventionally, each electronic control unit in the vehicle compartment is connected to an ABS or the like in the engine room by a wire harness. However, the number of wires in the wire harness has been significantly increased, and wiring work has become difficult. ing.

In view of the above-mentioned circumstances, each electronic control unit is arranged not in the vehicle compartment but in an ABS or the like in an engine room so as to secure a large space in the vehicle compartment and at the same time to carry out wiring harness work. Suggestions have been made to simplify. (See Japanese Patent Application Laid-Open No. 6-239217) When the electronic control unit is arranged in an engine room, measures such as waterproofness, heat resistance, and vibration resistance are more important than when the electronic control unit is arranged in a vehicle interior. Become.

[0005] As one of the countermeasures, as for waterproofness, as shown in FIG.
A box-shaped case 2 having an insertion hole 2b is provided on the upper surface, and seal rings 6a and 6b are attached to the opening 2a and the insertion hole 2b, respectively.

A cover 7 for closing the opening 2a of the case 2 via a seal ring 6a is provided, a printed wiring 3d is adhered to the inner surface of the cover 7, and a flexible extension extending from the printed wiring 3d. The printed wiring 3e is fixed to the rear end 4a of the male terminal 4 of the male connector 1 together with the auxiliary plate 8.

Then, as shown in FIG. 2 (B), the hood 1a of the male connector 1 is inserted into the insertion hole 2b from the opening 2a and stopped by the flange 1b. 1a, and an opening 2a is closed by a cover 7 via a seal ring 6a.

[0008]

However, in the above prior art, after the extension printed wiring 3e of the printed wiring 3d of the cover 7 is fixed to the rear end 4a of the male terminal 4 of the male connector 1 together with the auxiliary plate 8, Since the hood portion 1a of the male connector 1 was inserted into the insertion hole 2b from the inside of the case 2 by bending at 180 degrees, the height H of the male connector 1 was increased by the thickness of the auxiliary plate 8 and the auxiliary Since the plate 8 is required, there is a problem that the number of parts increases.

An object of the present invention is to provide a waterproof connector for an electronic control unit in which the height of a male connector can be reduced and the number of parts can be reduced. is there.

[0010]

According to the present invention, there is provided a waterproof connector for connecting an electronic control unit and a wire harness, wherein the electronic control unit has a box-like case having an opening. A cover for closing the opening of the case is provided, a printed wiring is adhered to the inner surface of the cover, and an insertion hole is formed in the cover so that a rear portion of the male connector can be inserted from the outer surface direction.
The male terminal of the male connector protruding into the case from the insertion hole is directly connected to the printed wiring, while a seal ring is attached to the rear of the male connector so as to be in close contact with the outer surface of the cover when inserted into the insertion hole. And a waterproof connector for an electronic control unit.

According to the present invention, the printed wiring is adhered to the inner surface of the cover that closes the opening of the case, and the rear part of the male connector is inserted into the insertion hole formed in the cover from the outer surface through the seal ring. Connect the male terminal of the male connector directly to the printed wiring.

Thus, the male terminal of the male connector can be directly connected to the printed wiring of the cover, so that a conventional auxiliary plate is not required.

According to a second aspect of the present invention, when a pressing restricting portion is provided at a rear portion of the male connector so as to prevent the seal ring from being excessively pressed against the outer surface of the cover, the seal ring is appropriately deformed and the seal is deformed. Good performance can be maintained.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings.

As shown in FIG. 1B, the electronic control unit includes a box-shaped case 12 having an opening 12a on an upper surface, and a seal ring 6a is fitted into an upper edge concave groove 12b of the opening 12a. ing.

The opening 12a is closed by a cover 13 via a seal ring 6a. Although not specifically shown, the cover 13 is fixed to the case 12 with screws or the like.

A printed wiring 3d is adhered to the inner surface 13a of the cover 13, and an insertion hole for inserting a rear portion 14a of the male connector 14 described below from the outer surface 13b is provided at an appropriate position on the cover 13. 13c is formed.

On the other hand, a male terminal 15 is insert-molded in the male connector 14, and a paragraph-shaped rear portion 14 a of the male connector 14 is set to have an outer diameter capable of being inserted into the insertion hole 13 c of the cover 13 without play. I have.

A seal ring 6b is fitted into a concave groove 14b formed on the paragraph surface of the rear portion 14a of the male connector 14, and the rear end of the concave groove 14b is inserted into the insertion hole 13c. Is provided with a pressing restricting portion 14c which comes into contact with the outer surface 13b of the cover 13 and restricts the rear portion 14a from being inserted any more. In addition,
Although not specifically shown, the male connector 14 is fixed to the cover 13 with screws or the like.

The waterproof connector 11 configured as described above
After the seal ring 6b is fitted into the concave groove 14b of the rear portion 14a of the male connector 13, the insertion hole 13 of the cover 13 is
When the rear portion 14b is inserted into the outer surface 13b of the cover 13 from the direction of the outer surface 13b, the seal ring 6b is pressed against the outer surface 13b of the cover 13 so as to be in close contact therewith.
To seal the gap with the insertion hole 13c.

At this time, the pressing restricting portion 14c of the concave groove 14b of the male connector 14 comes into contact with the outer surface 13b of the cover 13 to restrict the rear portion 14a from being inserted any more. Without being deformed, it is appropriately deformed, and the sealing property is favorably maintained.

Then, the rear end 15a of the male terminal 15 of the male connector 14 is connected to the printed wiring 3 on the inner surface 13a of the cover 13.
Connect directly to d.

The concave groove 12b of the opening 12a of the case 12
After the seal ring 6a is fitted in the opening 12a,
Is closed by the cover 13, the seal ring 6 a comes into close contact with the inner surface 13 a of the cover 13, and the opening 12 a of the case 12 is closed.
And the inner surface 13a of the cover 13 is sealed.

In the waterproof connector 11, since the rear end 15a of the male terminal 15 of the male connector 14 can be directly connected to the printed wiring 3d of the cover 13, the conventional auxiliary plate is not required. The height H 'of the male connector is reduced by the thickness (H>H'). In addition, since an auxiliary plate is not required, the number of parts is reduced.

Further, since it is not necessary to provide the extended printed wiring 3e on the printed wiring 3d, the printed wiring 3d is simplified, and the work of bending the male connector 14 at 180 degrees together with the extended printed wiring 3e is not required. Workability is also improved. Further, since the auxiliary plate does not protrude into the case 12 or a space for bending the extended printed wiring 3e is not required, the printed wiring 3d is not required.
The degree of freedom in layout of electronic components and the like connected to the device is improved.

[0026]

As is apparent from the above description, in the waterproof connector of the present invention, the rear part of the male connector is inserted into the insertion hole formed in the cover for closing the opening of the case from the outer surface through the seal ring. Since the male terminal of the male connector is directly connected to the printed wiring on the inner surface of the cover, the male terminal of the male connector can be directly connected to the printed wiring on the inner surface of the cover, eliminating the need for a conventional auxiliary plate. Thus, the height of the male connector can be reduced by the thickness of the auxiliary plate, and the number of parts can be reduced because the auxiliary plate is not required.

Further, if a pressing restricting portion for restricting the seal ring from being excessively pressed against the outer surface of the cover is provided at the rear portion of the male connector, the seal ring is appropriately deformed and the seal is deformed. Satisfactorily can be maintained, and the durability of the seal ring can be improved.

[Brief description of the drawings]

FIG. 1 is a waterproof connector according to the present invention, in which (A) is a side sectional view and (B) is a side sectional view before assembling.

FIG. 2 is a prior art waterproof connector, in which (A) is a side sectional view and (B) is a side sectional view before assembling.

[Explanation of symbols]

 3d Printed wiring 6b Seal ring 11 Waterproof connector 12 Case 12a Opening 13 Cover 13a Inner surface 13b Outer surface 13c Insertion hole 14 Male connector 14a Rear portion 14c Pressing restricting portion 15 Male terminal

Claims (2)

[Claims] 1. A waterproof connector for connecting an electronic control unit and a wire harness, wherein the electronic control unit includes a box-shaped case having an opening, and a cover for closing the opening of the case. The printed wiring is adhered to the inner surface of the cover, and an insertion hole is formed in the cover so that the rear part of the male connector can be inserted from the outer surface direction. The male terminal of the male connector projecting into the case from the insertion hole is printed as described above. A waterproof connector for an electronic control unit, wherein a seal ring is attached to a rear portion of the male connector while being directly connected to a wiring, the seal ring being attached to an outer surface of a cover when inserted into an insertion hole. 2. The waterproof connector for an electronic control unit according to claim 1, further comprising a pressing restricting portion provided at a rear portion of the male connector so as to restrict the seal ring from being excessively pressed against the outer surface of the cover.