JP6569595B2 - Vehicle side connector - Google Patents

Description

  The technique disclosed by this specification is related with a vehicle side connector.

  Conventionally, as a vehicle-side connector for draining water that has entered the terminal accommodating portion from the outside of the vehicle to the outside of the vehicle, one described in Japanese Patent Application Laid-Open No. 2012-243467 (Patent Document 1 below) is known. A retainer for preventing the terminal fitting from coming off is provided behind the terminal accommodating portion, and a rubber plug for sealing the inside of the housing is attached to the rear of the retainer. The rubber stopper is provided with an inclined surface that forms a downward slope toward the outside of the vehicle. The water that has entered the housing flows downward along the inclined surface of the rubber plug and is discharged outside the vehicle.

JP 2012-243467 A

  However, depending on the type of vehicle, it may not be possible to drain toward the outside of the vehicle. In such a case, the water that has entered the housing is discharged toward the inside of the vehicle and then drained outside the vehicle using a drain hose or the like. Must. Further, when high-pressure water directly hits the inclined surface from the outside of the vehicle, the water rebounds toward the terminal fittings, and the terminal fittings may leak.

  A vehicle-side connector disclosed in the present specification has a connector fitting portion that has a hood shape that opens forward, and a drain hole is provided through a lower end portion of a back wall of the connector fitting portion. A housing, and a rear housing that has a drain portion capable of discharging water that has entered the connector fitting portion to the outside of the vehicle, and is mounted on the rear side of the front housing, the rear housing including the drain hole An inclined wall that is located between the drain portions and goes downward as it goes toward the vehicle interior side is provided, and a lower surface of the inclined wall is positioned so as to face the drain hole.

  According to such a configuration, when the water that has entered the connector fitting portion directly hits the lower surface of the inclined wall through the drainage hole, the water does not rebound upward, and rebounds downward, which may cause the terminals to leak. There is no. The water that has passed through the drainage hole travels along the lower surface of the inclined wall to the drain portion, and is discharged from the drain portion to the outside of the vehicle. In addition, by connecting a hose or the like to the drain portion, the water in the drain portion can be discharged to the outside of the vehicle via the inside of the vehicle.

The technology disclosed in the present specification may have the following configuration.
The inclined wall may have a configuration in which an opening area increases as the drainage hole is approached.
According to such a structure, when the water which infiltrated into the connector fitting part goes to a sloping wall from a drain hole, it becomes easy to permeate into the inside of a sloping wall. Since the water that has entered the inside of the inclined wall is concentrated in one place along the lower surface of the inclined wall toward the drain part, the drainage can be improved.

The lower surface wall which comprises the lower surface of the said drain hole is good also as a structure located ahead of the lower end part of the said inclined wall.
According to such a configuration, since the lower surface wall is located in front of the lower end portion of the inclined wall, when water enters through the lower surface wall of the drainage hole and reaches the rear end portion, it faces the lower surface of the inclined wall. It becomes a state and can prevent reliably that water splashes upwards.

  According to the technology disclosed by this specification, it is possible to prevent water from splashing upward.

Front view of vehicle side connector AA line sectional view in FIG. The principal part expanded sectional view in FIG. Side view of vehicle side connector A perspective sectional view showing the internal structure of the vehicle-side connector Rear view of inlet housing Cross section of inlet housing Perspective view showing the front side of the retainer

<Embodiment>
The embodiment will be described with reference to the drawings of FIGS. The vehicle-side connector 10 of this embodiment is connected to a battery (not shown) mounted on an electric vehicle, a hybrid vehicle, or the like, and a charging connector (not shown) is fitted and connected when charging the battery. . In the following description, the fitting side (the left side in FIG. 2) with the charging connector will be described as the front side.

  As shown in FIG. 2, the vehicle-side connector 10 includes an inlet housing 20 that is attached to the body of the vehicle, two types of terminals 30 and 40 that are attached to the inlet housing 20 from the rear, and terminals 30 and 40 that are connected to the rear side. The retainer 90 is configured to be prevented from coming off. Both the large-diameter terminal 30 and the small-diameter terminal 40 are cylindrical female terminals, of which the large-diameter terminal 30 is a power terminal and the small-diameter terminal 40 is a signal terminal.

  The inlet housing 20 is a female housing formed of a synthetic resin material, and includes a mounting plate 21 that forms a front square shape that is attached to the body (panel) of the vehicle, and a connector fitting portion 22 that is provided on the mounting plate 21. It has. The connector fitting portion 22 has a hood shape that opens forward, and includes a circular back wall 23 that isolates the inside and outside of the vehicle, and an annular hood portion 24 provided on the outer periphery of the back wall 23. Yes. A male housing (not shown) of the charging connector is fitted into the connector fitting portion 22. At four corners of the mounting plate 21, mounting holes 21A are opened.

  As shown in FIG. 1, four terminal accommodating portions 60 and 70 are formed in the connector fitting portion 22 so as to penetrate the back wall 23 in the front-rear direction. Of the terminal accommodating portions 60, 70, the first terminal accommodating portion 60 is for accommodating the large-diameter terminal 30, and the second terminal accommodating portion 70 is for accommodating the small-diameter terminal 40. . The first terminal accommodating portion 60 is arranged in the horizontal direction, and the second terminal accommodating portion 70 is arranged in the vertical direction so as to form a cross.

  The second terminal accommodating portion 70 has a structure in which four cylindrical portions 72 are arranged on the inner peripheral side of a cylindrical peripheral wall 71. Each cylindrical portion 72 is connected to the inner peripheral surface of the peripheral wall 71 in a cross-shaped arrangement. The cylindrical portion 72 is configured to penetrate the back wall 23 in the front-rear direction, whereas the peripheral wall 71 is disposed only on the front side of the back wall 23. As shown in FIG. 2, a terminal accommodating chamber 73 that accommodates the small-diameter terminal 40 is formed inside each cylindrical portion 72.

  As shown in FIG. 6, a mounting cylinder portion 80 having a rear opening is formed on the rear surface of the back wall 23 in the inlet housing 20. The shaft center of the mounting cylinder portion 80 is disposed at a position that is offset downward from the shaft center of the connector fitting portion 22. A retainer 90 is attached to the mounting cylinder portion 80 to collectively prevent the terminals 30 and 40 from being detached. The terminal accommodating portions 60 and 70 are arranged on the inner peripheral side of the mounting cylinder portion 80.

  As shown in FIG. 8, the retainer 90 includes a circular base 91, an annular seal mounting wall 92 provided on the outer peripheral edge of the base 91, and two types of large and small holding cylinders erected forward from the base 91. 93, and a plurality of mounting pieces 94 are provided on the outer peripheral side of the seal mounting wall 92. As shown in FIG. 4, each of the attachment pieces 94 can hold the retainer 90 on the attachment cylinder portion 80 by engaging with a plurality of attachment projections 81 provided on the outer periphery of the attachment cylinder portion 80.

  As shown in FIG. 2, a seal ring 50 is mounted on the seal mounting wall 92. When the retainer 90 is mounted on the mounting cylinder part 80, the seal ring 50 is sandwiched between the seal mounting wall 92 and the mounting cylinder part 80. Further, since the terminals 30 and 40 cannot be moved rearward by the holding cylinder portion 93, the terminals 30 and 40 are prevented from coming out rearward. On the other hand, each terminal 30, 40 is brought to a front stop by contacting the inner wall 23 of the connector fitting portion 22. Thereby, each terminal 30 and 40 is hold | maintained in each terminal accommodating part 60 and 70. FIG.

  Now, as shown in FIG. 7, a drain hole 25 is provided in the lower end portion of the back wall 23 of the connector fitting portion 22 so as to penetrate in the front-rear direction. The lower surface of the drainage hole 25 is connected to the inner peripheral lower surface 24A of the hood portion 24 through a step 24B, and a lower surface wall 25A positioned below the inner peripheral lower surface 24A and an upper surface wall positioned above the inner peripheral lower surface 24A. A space surrounded by 25B in the vertical direction. In other words, the lower surface wall 25 </ b> A is a wall constituting the lower surface of the drainage hole 25, and the upper surface wall 25 </ b> B is a wall constituting the upper surface of the drainage hole 25. In addition, the rear end of the drainage hole 25 and the lower end of the mounting cylinder part 80 are set to a position aligned in the front-rear direction. Therefore, the water that has entered the connector fitting portion 22 is discharged rearward from the drain hole 25 along the lower wall 25A.

  On the other hand, as shown in FIG. 8, the retainer 90 includes an inclined wall 95 having a semiconical shape and extending rearward. The inclined wall 95 is located at the lower end of the base 91 and is formed so as to bulge the base 91 backward. For this reason, the opening area of the inclined wall 95 becomes smaller as it goes from the opening side to the back side. That is, as shown in FIG. 5, in the state where the retainer 90 is mounted on the mounting cylinder portion 80, the opening area of the inclined wall 95 increases as the distance from the drain hole 25 increases.

  As shown in FIG. 3, a communication hole 96 is provided below the inclined wall 95 and behind the seal mounting wall 92, and a drain portion 97 is provided on the back side (rear side) from the communication hole 96. It has been. The communication hole 96 is configured to open downward, and allows the inside of the inclined wall 95 and the inside of the drain portion 97 to communicate with each other. As shown in FIG. 4, the drain portion 97 is formed in a cylindrical shape and is opened rearward, and a drainage hose (not shown) is attached thereto. On the lower side of the rear end of the drain portion 97, a step portion 98 is provided for hooking so that a fixing band (not shown) wound around the hose does not come off. The water discharged from the drain portion 97 into the hose passes through the inside of the hose, passes through the inside of the vehicle, and then is discharged to the outside of the vehicle. Moreover, since the drain part 97 is substantially contained in the range of the maximum dimension of the up-down direction and the front-back direction of the vehicle side connector 10, it contributes to size reduction of the vehicle side connector 10. FIG.

  In a state where the retainer 90 is mounted on the mounting cylinder portion 80, the rear end portion 25 </ b> C of the lower surface wall 25 </ b> A of the drain hole 25 is positioned in front of the lower end portion of the inclined wall 95, as shown in FIG. 5. As a result, the rear end portion 25C is positioned facing the lower surface 95A of the inclined wall 95, and the water that has entered the drain holes 25 is formed on the lower surface of the inclined wall 95 as indicated by the dashed line in FIG. In the case of a direct hit on 95A, water does not rebound upward, but is guided to the drain portion 97 via the communication hole 96 by rebounding downward. The rear end portion of the seal mounting wall 92 is located behind the front end portion of the inclined wall 95. Thereby, the water that has entered the inside of the inclined wall 95 through the lower wall 25A of the drain hole 25 falls to the seal mounting wall 92 at the rear end portion 25C, but the rear end portion of the seal mounting wall 92 is Since it is located behind the opening of the inclined wall 95, the dropped water enters the drain part 97 as it is through the communication hole 96.

  As described above, in the present embodiment, when the water that has entered the connector fitting portion 22 directly hits the lower surface 95A of the inclined wall 95 through the drain hole 25, the water does not rebound upward, but rebounds downward. There is no risk of leakage between the terminals 30 and 40. The water that has passed through the drain hole 25 reaches the drain portion 97 through the lower surface 95A of the inclined wall 95, and is discharged from the drain portion 97 to the outside of the vehicle. In addition, by connecting a hose etc. to the drain part 97, the water of the drain part 97 can also be discharged | emitted to the vehicle exterior via a vehicle inside.

The inclined wall 95 may have a configuration in which the opening area increases as it approaches the drain hole 25.
According to such a configuration, when the water that has entered the connector fitting portion 22 goes from the drain hole 25 to the inclined wall 95, the water can easily enter the inclined wall 95. Since the water that has entered the inside of the inclined wall 95 is concentrated in one place along the lower surface 95A of the inclined wall 95 and toward the drain portion 97, drainage can be improved.

The lower surface wall 25 </ b> A constituting the lower surface of the drain hole 25 may be configured in front of the lower end portion of the inclined wall 95.
According to such a configuration, since the lower surface wall 25A is located in front of the lower end portion of the inclined wall 95, when water enters the lower surface wall 25A of the drain hole 25 and reaches the rear end portion 25C, the inclined wall 95 is brought into a state facing the lower surface 95A, and water can be reliably prevented from splashing upward.

<Other embodiments>
The technology disclosed in the present specification is not limited to the embodiments described with reference to the above description and drawings, and includes, for example, the following various aspects.
(1) Although the retainer 90 is illustrated as the rear housing in the above-described embodiment, a cover that restricts the drawing direction of the electric wire may be used as the rear housing.

  (2) In the above-described embodiment, the semiconical inclined wall 95 whose vertical dimension and width dimension decrease toward the rear is illustrated. However, the inclined wall whose vertical dimension decreases toward the rear but has a constant width dimension. May be provided.

  (3) In the above embodiment, the rear end portion 25C of the lower wall 25A is not accommodated in the inclined wall 95 and is located outside (front) of the inclined wall 95, but the lower wall 25A is exemplified. The rear end portion 25 </ b> C may be configured to protrude rearward so as to be positioned below the inclined wall 95.

DESCRIPTION OF SYMBOLS 10 ... Vehicle side connector 20 ... Inlet housing (front housing)
DESCRIPTION OF SYMBOLS 22 ... Connector fitting part 23 ... Back wall 25 ... Drain hole 25A ... Bottom wall 25B ... Top wall 25C ... Projection part 90 ... Retainer (rear housing)
95 ... Inclined wall 95A ... Lower surface 97 ... Drain portion

Claims (3)

A front housing having a hood-like connector fitting portion that opens forward, and a drainage hole penetrating through a lower end of the back wall of the connector fitting portion;
A rear housing mounted on the rear side of the front housing, having a drain part capable of draining water that has entered the connector fitting part into the vehicle interior ;
A hose connected to the drain part and capable of discharging water drained from the drain part to the vehicle interior to the vehicle exterior ;
The rear housing is positioned between the drainage hole and the drain part, and includes an inclined wall that goes downward as it goes toward the vehicle interior, and a lower surface of the inclined wall is positioned to face the drainage hole. Side connector.   The vehicle-side connector according to claim 1, wherein an opening area of the inclined wall increases as it approaches the drain hole.   3. The vehicle-side connector according to claim 1, wherein a lower wall constituting the lower surface of the drain hole is located in front of a lower end portion of the inclined wall.

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