CN204190063U - Power side connector - Google Patents

Abstract

The utility model provides a power receiving side connector, which does not have poor connection with the power supply side connector caused by snow and water entering from the outside, and can perform charging operations smoothly. The power receiving side connector (1) has: a housing (21), the housing (21) has a fitting portion (31) formed with a fitting recess (33), and the fitting portion (31) fits into the power supply side connector and a grommet (11), the grommet (11) is installed in such a way as to cover the wire lead-out part (32) of the casing (21), and the power receiving side connector (1) places the fitting part (31) in the It is installed on the vehicle body in a position outside the vehicle body, wherein a case draining water that communicates with the fitting recess (33) of the fitting part (31) is formed at the lower part of the casing (21) covered by the grommet (11). The hole (49), at the bottom of the grommet (11), is formed with a grommet water discharge hole (65) at a position offset in the horizontal direction relative to the casing water discharge hole (49).

Description

Receiver side connector

technical field

The utility model relates to a power-receiving-side connector assembled on the vehicle bodies of electric vehicles, plug-in hybrid electric vehicles and the like.

Background technique

Batteries are mounted on vehicles such as electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs). The battery of the vehicle is charged from the power feeding facility by joining a power feeding side connector as a mating connector to a vehicle side power receiving side connector incorporated in the vehicle body (see Patent Document 1).

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2011-175764

Utility model content

The technical problem that the utility model intends to solve

However, if snow enters the fitting portion of the receiving-side connector where the power-supplying-side connector is joined, or if accumulated rainwater freezes, the power-supplying-side connector joined to the fitting portion and the snow and ice in the fitting portion will If the frozen object interferes, it will be difficult to join, which may hinder the charging operation.

This utility model is completed in view of the above-mentioned situation, and its purpose is to provide a power receiving side connector, which will not cause poor connection with the power supply side connector due to snow and water entering from the outside. Charging works smoothly.

Technical solutions for problem solving

In order to achieve the above objects, the power receiving side connector of the present invention is characterized by the following (1) to (3).

(1) A power receiving side connector comprising: a housing having a fitting portion formed with a fitting recess, the fitting concave portion fitting into a power feeding side connector; and an electric wire protection member, the electric wire The protective member is attached so as to cover the electric wire lead-out portion of the case, and the receiving-side connector assembles the fitting portion to the vehicle body so as to be positioned outside the vehicle body,

The power receiving side connector is characterized in that,

A case drain hole communicating with the inside of the fitting recess of the fitting portion is formed at the lower portion of the case covered by the electric wire protection member,

In the lower part of the electric wire protection part, a water discharge hole of the electric wire protection part is formed at a position offset in the horizontal direction relative to the water discharge hole of the housing.

(2) The power receiving side connector according to (1), wherein

A storage recess recessed downward is formed at the lower portion of the electric wire protection member,

The storage recess is arranged under the water discharge hole of the casing,

The water discharge hole of the electric wire protection member is formed at the bottom of the storage recess.

(3) The power receiving side connector according to (1) or (2), wherein

In the housing, a flow path is formed between the fitting recess and the housing water hole.

(4) The power receiving side connector according to (3), wherein

The housing drain hole is a hole that expands from the flow path toward the lower portion of the wire protection member.

In the power receiving-side connector having the configuration of (1) above, there are a case drain hole communicating with the fitting recess of the fitting portion, and a wire protection member drain hole opening to the outside. Then, snow and water entering the fitting recess are discharged to the outside of the casing through the casing water discharge hole, and further are discharged to the outside through the electric wire protection member water discharge hole. Therefore, it is possible to eliminate the problem that the power supply-side connector cannot be joined due to snow or water entering the fitting recess as frozen matter.

In addition, the water discharge hole of the casing and the water discharge hole of the electric wire protection member are disposed at positions offset in the horizontal direction. Thus, even if snow or water is drawn up and enters the wire protection member from the water discharge hole of the wire protection member when the vehicle is moving, it is possible to prevent snow and water from entering the housing from the water discharge hole of the housing. Therefore, it is possible to eliminate the problem that snow or water that enters through the water discharge hole of the electric wire protection member when the vehicle is moved reaches the fitting recess and becomes frozen, making it difficult to connect the power supply side connector and hindering the charging of the battery. Operation.

That is, it is possible to eliminate poor connection with the power supply side connector caused by entering the fitting recess from the fitting portion side, or by frozen objects such as snow and rain that are rolled up when the vehicle is moving, and therefore, the charging operation can be performed smoothly. .

In the power receiving-side connector having the configuration of (2) above, the snow and water can be temporarily held in the storage recess formed in the lower portion of the electric wire protection member to suppress the flow of snow and water. As a result, backflow of snow or water discharged from the fitting recess into the fitting recess, and snow or water that is hoisted during vehicle movement and enters through the water release hole of the electric wire protection member from entering the fitting recess can be reliably suppressed.

In the power receiving-side connector having the configuration of (3) above, the flow of snow and water can be temporarily held by the flow path formed between the fitting recess of the housing and the housing water discharge hole, thereby suppressing the flow of snow and water. As a result, backflow of snow or water discharged from the fitting recess into the fitting recess, and snow or water that is hoisted during vehicle movement and enters through the water release hole of the electric wire protection member from entering the fitting recess can be reliably suppressed.

The effect of utility model

According to the present invention, it is possible to provide an electric wire protection member capable of suppressing damage to a power receiving side connector, and a power receiving side connector including the electric wire protecting member.

Above, this utility model was briefly described. Furthermore, the detail of this invention will become clearer by reading through embodiment (henceforth "embodiment.") of the invention demonstrated below with reference to drawings.

Description of drawings

FIG. 1 is a perspective view of a power receiving-side connector and a power-supplying-side connector joined thereto according to the present embodiment.

Fig. 2(a) and Fig. 2(b) are diagrams showing the power receiving side connector of this embodiment, Fig. 2(a) is a front view of the power receiving side connector, Fig. 2(b) is A-A sectional view of (a) of FIG. 2 .

FIG. 3 is an enlarged view of part B of FIG. 2( b ).

Fig. 4 is a perspective view of a grommet.

Fig. 5 is a diagram showing a grommet, Fig. 5(a) is a front view, Fig. 5(b) is a side view, and Fig. 5(c) is a rear view.

Fig. 6 is a rear view of the power receiving-side connector of the present embodiment.

Fig. 7 is a cross-sectional view of the vicinity of the fitting recess of the housing.

8 is a cross-sectional view showing part of a case and a grommet of a comparative example.

Explanation of reference signs

1 Receiver side connector

2 power supply side connector

11 Grommet

21 shell

31 Fitting part

32 Wire exporting part

33 Fitting recess

48 flow path

49 Shell drain hole

64 storage recess

64a Bottom

65 grommet drain hole

Detailed ways

Hereinafter, examples of embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a power receiving-side connector and a power-supplying-side connector joined thereto according to the present embodiment. Fig. 2(a) and Fig. 2(b) are diagrams showing the power receiving side connector of this embodiment, Fig. 2(a) is a front view of the power receiving side connector, Fig. 2(b) is A-A sectional view of (a) of FIG. 2 . FIG. 3 is an enlarged view of part B of FIG. 2( b ).

As shown in FIG. 1 , the power receiving side connector 1 according to the present embodiment is joined to a power feeding side connector 2 on the side of a power feeding device (not shown). The power receiving side connector 1 is incorporated into the body of a battery-mounted vehicle such as an electric vehicle (EV) or a plug-in hybrid electric vehicle (PHEV). Then, in a state where the power supply side connector 2 is engaged with the power reception side connector 1 , power is supplied from the power supply device to the vehicle side to charge the battery.

As shown in FIG. 2( a ) and FIG. 2( b ), the power receiving-side connector 1 has a housing 21 , a rear holder 22 , and a grommet 11 . In addition, the power receiving-side connector 1 includes an actuator 23 on an upper portion of a housing 21 . The grommet 11 serving as a wire protection member prevents water, snow, etc. from entering the housing 21 due to hoisting when the vehicle is moving.

The casing 21 is formed of synthetic resin and formed into a cylindrical shape. The front end side of the housing 21 is provided as a fitting portion 31 , and the rear end side is provided as a wire lead-out portion 32 . A fitting concave portion 33 is formed in the fitting portion 31 , and the engaging portion 2 a of the front end portion of the power supply-side connector 2 is fitted into the fitting concave portion 33 . The fitting portion 31 is formed with a plurality of terminal accommodating cylindrical portions 34 protruding from the bottom surface of the fitting recess 33 to the front end side of the housing 21 .

A flange portion 35 protruding outward is formed on the outer periphery of the housing 21 in the vicinity of the front end. The flange portion 35 is fixed to a panel (not shown) constituting the vehicle body of the vehicle. Thus, the power receiving side connector 1 is assembled to the vehicle body.

The housing 21 includes an opening and closing cover 36 . The opening and closing cover 36 is provided on the fitting portion 31 side of the case 21 , and the fitting recess 33 of the fitting portion 31 of the case 21 is closed by the opening and closing cover 36 . A part of the opening and closing cover 36 is coupled to the flange portion 35 via a hinge 37 . The fitting recessed portion 33 of the fitting portion 31 of the case 21 is opened and closed by rotating the opening and closing cover 36 around the joint portion constituted by the hinge 37 . On the flange portion 35, a locking portion 38 is provided on the side opposite to the hinge 37, and the side of the opening and closing cover 36 that has closed the fitting recess 33 of the fitting portion 31 is locked by the locking portion 38 on the side opposite to the hinge 37. stuck.

A plurality of cavities 41 are formed on the housing 21 . These cavities 41 are formed along the axial direction of the casing 21 . The cavities 41 are respectively formed to continue from the wire lead-out portion 32 into the terminal accommodating cylinder portion 34 of the fitting portion 31 . The cavities 41 are respectively opened at the front end of the terminal accommodating cylindrical portion 34 and the rear end of the electric wire lead-out portion 32 . In each cavity 41 , a terminal 45 inserted from the rear end side of the wire lead-out portion 32 of the case 21 is housed. The terminal 45 is formed of a conductive metal material such as copper or copper alloy, and an electric wire 46 is connected to the rear end thereof. The wire 46 is an insulated wire whose periphery is covered with resin, and the conductor exposed at the end is conductively connected to the terminal 45 or the like by crimping or the like. On the housing 21 , a fixing claw 47 protruding outward is formed at the lower end of the wire lead-out portion 32 .

As shown in FIG. 3 , the housing 21 has a flow path 48 on the lower side of the wire lead-out portion 32 . The flow path 48 communicates with the inside of the fitting recess 33 of the fitting portion 31 . In addition, a casing water discharge hole 49 is provided at the lower part of the casing 21 . The case drain hole 49 is formed in a bottom portion 48 a constituting the flow path 48 at the rear end portion of the flow path 48 so as to open downward and widen. Specifically, the housing drain hole 49 is formed so as to expand horizontally toward the rear side or the near side in the drawing in 3 , in other words, so as to be recessed on the side wall surface forming the flow path 48 . In FIG. 3 , the depression on the side wall surface of the flow path 48 is indicated by reference numeral 49 a. Thus, the fitting recess 33 communicates with the outside of the housing 21 via the flow path 48 .

As shown in FIG. 2( b ), the rear holder 22 is formed of synthetic resin, and is attached to the rear end portion of the electric wire lead-out portion 32 of the housing 21 . The rear holder 22 has a disc-shaped bottom plate portion 51 and a peripheral wall portion 52 extending from the peripheral edge of the bottom plate portion 51 toward one side. A plurality of wire insertion holes 53 are formed in the bottom plate portion 51 of the rear holder 22 , and the wires 46 connected to the terminals 45 in the wire lead-out portion 32 are inserted through these wire insertion holes 53 . A fixing hole 54 is formed in the peripheral wall portion 52 at the lower end of the rear holder 22 .

The rear holder 22 is attached to the rear end portion of the wire lead-out portion 32 of the housing 21 from the side of the peripheral wall portion 52 . When the rear holder 22 is attached to the rear end of the wire lead-out portion 32 , the fixing claws 47 of the housing 21 are engaged with the fixing holes 54 , and the rear holder 22 is fixed to the wire lead-out portion 32 .

Thereby, the rear end part of the electric wire lead-out part 32 of the housing 21 is covered by the rear holder 22, and is closed. And, by attaching the rear holder 22 , the rearward movement of the terminal 45 accommodated in the cavity 41 is restricted, and the terminal 45 is prevented from coming off from the electric wire lead-out portion 32 .

Fig. 4 is a perspective view of a grommet. Fig. 5 is a diagram showing a grommet, Fig. 5(a) is a front view, Fig. 5(b) is a side view, and Fig. 5(c) is a rear view. Fig. 6 is a rear view of the power receiving-side connector of the present embodiment.

As shown in FIG. 4 , (a) of FIG. 5 to (c) of FIG. 5 , and FIG. 6 , the grommet 11 is formed in a cylindrical shape, and the electric wire 46 is passed through the grommet 11 . The grommet 11 is formed of, for example, an elastic resin material such as rubber or elastomer. The front end of the grommet 11 is provided as a case holding portion 61 into which the wire lead-out portion 32 of the case 21 to which the rear holder 22 is attached is fitted. The rear of the housing holding portion 61 is provided in this order with a bellows portion 62 and a wire lead-out portion 63 . In the bellows part 62, the peak part 62a and the valley part 62b are formed alternately along the axial direction over the circumferential direction, and the bellows part 62 can be easily bent in the direction intersecting the axial direction. The wire lead-out portion 63 is formed to have a small diameter, and the wire 46 drawn out from the wire insertion hole 53 of the rear holder 22 is drawn out from the wire lead-out portion 63 .

As shown in FIG. 3 , on the housing holding portion 61 of the grommet 11 , a storage recess 64 is formed on the lower side thereof, which is depressed downward. By fitting the wire lead-out portion 32 of the housing 21 into the housing holding portion 61 of the grommet 11 , the housing drain hole 49 formed in the lower portion of the housing 21 is covered by the housing holding portion 61 of the grommet 11 . Further, the front end side of the storage recess 64 of the case holding portion 61 is disposed on the lower side of the case water discharge hole 49 .

A grommet drain hole 65 is formed on the rear side of the reservoir recess 64 of the case holding portion 61 . A plurality of grommet drain holes 65 are formed along the axial direction. These grommet drain holes 65 are formed in the bottom portion 64 a constituting the storage recess 64 of the grommet 11 so as to open downward.

The grommet water discharge hole 65 is arranged at a position offset in the horizontal direction from the housing water discharge hole 49 . Specifically, the casing water discharge hole 49 and the grommet water discharge hole 65 are arranged at positions shifted in the axial direction of the power receiving side connector 1 . As a result, the casing drain hole 49 and the grommet drain hole 65 are not continuous in the vertical direction.

A plurality of buffer ribs 71 protruding outward are integrally formed on the grommet 11 around the housing holding portion 61 . These buffer ribs 71 are formed along the circumferential direction of the grommet 11 and arranged at intervals along the axial direction of the grommet 11 . Accordingly, even if the power receiving-side connector 1 is accidentally dropped and comes into contact with the vehicle body when the power receiving-side connector 1 is assembled to the vehicle body, the impact is absorbed by the bumper rib 71 coming into contact and falling down. Therefore, it is possible to suppress the failure that the rear holder 22 of the power receiving side connector 1 is damaged due to an impact.

As shown in FIG. 5( c ) and FIG. 6 , a notch 72 is formed in a part of the circumferential direction on the buffer rib 71 . The notch portion 72 is formed in the buffer rib 71 other than the buffer rib 71 on the front end side of the grommet 11 . The notch 72 is formed at the lower end position of the grommet 11 at a position below a fixing portion constituted by the fixing hole 54 for locking the rear holder 22 to the housing 21 and the fixing claw 47 . Accordingly, the flexibility of the buffer rib 71 below the grommet 11 is improved, and when the power receiving-side connector 1 is dropped by mistake, the shock is reliably absorbed since it comes into contact with the ground and easily falls down.

The actuator 23 is fixed on the upper part of the casing 21 . The actuator 23 has a lock lever 81 on the front end side, and the lock lever 81 is inserted through a slit 35 a formed in the flange portion 35 of the housing 21 . The actuator 23 advances and retreats the lock lever 81 according to the control signal.

When charging the battery of a vehicle having the power receiving-side connector 1 with the above-mentioned structure, the opening and closing cover 36 of the power receiving-side connector 1 is opened to expose the fitting recess 33 of the fitting part 31, and the power supply on the side of the power supply device is exposed. The engaging portion 2 a at the front end of the side connector 2 is inserted into the fitting recess 33 . In this way, the engaging portion 2a of the power supply-side connector 2 is fitted into the fitting recess 33 of the power-receiving-side connector 1, and the terminal (not shown) of the power-supplying-side connector 2 is conductively connected to the terminal (not shown) accommodated in the receiving-side connector. Terminals 45 in the housing 21 of the electrical side connector 1 . In addition, at this time, the locking claw (not shown) of the locking mechanism 2b provided on the upper portion of the power supply-side connector 2 locks the locking recessed portion 31a formed on the upper portion of the fitting portion 31 of the power receiving-side connector 1 . As a result, the engaged state between the power receiving side connector 1 and the power feeding side connector 2 is maintained. In this state, the lock lever 81 of the actuator 23 protrudes and is disposed above the lock claw that locks the lock recess 31a, thereby restricting the movement of the lock claw in a direction that escapes from the lock recess 31a. Accordingly, it is prohibited to release the engaged state of the power supply side connector 2 from the power reception side connector 1 during the battery charging operation.

When the charging of the battery is completed, the lock lever 81 of the actuator 23 is pulled in, and the restriction on the movement of the lock pawl is released. In this state, when the lock release lever 2c of the power supply side connector 2 is pushed down, the lock claw comes out from the locking recessed portion 31a. Then, the power supply side connector 2 is pulled out from the power reception side connector 1, and the opening and closing cover 36 is closed to close the fitting recess 33 of the fitting part 31, and charging is completed.

It should be noted that, as described above, in order to connect the power supply-side connector 2 to the power-receiving-side connector 1, if the opening and closing cover 36 is opened, snow or rainwater may enter the fitting recess 33 of the fitting portion 31. internal. In addition, in cold regions, rainwater entering the fitting recess 33 may freeze. In this way, if snow enters the fitting recess 33 or accumulated rainwater freezes, as shown in FIG. Frozen objects such as snow and ice in 33 interfere. Then, it becomes difficult to connect the power supply-side connector 2 to the power-receiving-side connector 1, which may hinder the charging operation of the battery.

In the power receiving side connector 1 of this embodiment, as shown in FIG. 3 , there are case drain hole 49 communicating with fitting recess 33 of fitting portion 31 and grommet drain hole 65 opening to the outside. And, the snow and water entering the fitting recess 33 enter the storage recess 64 of the grommet 11 through the flow path 48 from the housing water discharge hole 49, and further, the snow and water entering the storage recess 64 are released from the grommet 11 formed on the grommet 11. The ring water discharge hole 65 is discharged to the outside (refer to arrow C in FIG. 3 ). Therefore, it is possible to eliminate the problem that the snow or water entering the fitting recess 33 becomes the frozen matter T and the power supply-side connector 2 cannot be joined.

Here, as shown in FIG. 8 , even if the grommet water discharge hole 65 is formed directly below the case water discharge hole 49 communicating with the fitting recess 33 , snow and water entering the fitting recess 33 pass through the case water discharge hole 49 And the grommet water discharge hole 65 is discharged to the outside (refer to arrow D in Fig. 8). However, when the grommet water discharge hole 65 is formed directly below the casing water discharge hole 49 in this way, snow and water that are hoisted and enter through the grommet water discharge hole 65 when the vehicle is moving may pass through the casing water discharge hole 49. It enters the housing 21 and reaches the fitting recess 33 (see arrow E in FIG. 8 ). Then, the snow and water reaching the fitting recess 33 become frozen matter T, which makes it difficult to connect the power supply-side connector 2 to the power-receiving-side connector 1, and may not be able to charge the battery.

In contrast, in the power receiving-side connector 1 of the present embodiment, the case drain hole 49 and the grommet drain hole 65 are arranged at positions displaced in the horizontal direction. Thus, even if snow or water is hoisted and enters the grommet 11 from the grommet drain hole 65 when the vehicle is moving, it is possible to prevent snow and water from entering the housing 21 from the housing drain hole 49 . Therefore, it is possible to eliminate the problem that the snow or water that is hoisted and entered from the grommet drain hole 65 when the vehicle is moving reaches the fitting recess 33 and becomes a frozen object T, which makes it difficult to connect the power supply-side connector 2 and cannot be used. Charge the battery.

That is, according to the power receiving-side connector 1 of the present embodiment, it is possible to eliminate the problem caused by frozen matter T made of snow or rain that enters the fitting recess 33 from the fitting portion 31 side or is swept up when the vehicle is moving. Since the connection with the power supply side connector 2 is poor, the charging operation can be performed smoothly.

In addition, in the power receiving side connector 1 of this embodiment, the storage recess 64 formed in the lower part of the grommet 11 and the flow between the fitting recess 33 formed in the case 21 and the case water discharge hole 49 can be used. Road 48 temporarily holds snow and water to suppress the flow of snow and water. As a result, snow and water discharged from the fitting recess 33 flow back into the fitting recess 33 , and snow and water that are hoisted and entered through the grommet drain hole 65 when the vehicle is moving are reliably prevented from entering the fitting recess 33 .

In addition, this invention is not limited to the above-mentioned embodiment, Deformation, improvement, etc. are possible suitably. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-mentioned embodiment are arbitrary as long as the present invention can be achieved, and are not limited.

Here, the features of the embodiments of the above-mentioned power receiving-side connector of the present invention are briefly summarized and listed as the following (1) to (3).

(1) A power receiving side connector (1), comprising: a case (21) having a fitting portion (31) formed with a fitting recess (33), the fitting recess (33) fitting the power supply side connector (2); and the electric wire protection member (grommet 11), and the electric wire protection member (11) is attached in such a manner as to cover the electric wire lead-out portion (32) of the case (21), In the power receiving side connector (1), the fitting portion (31) is assembled to the vehicle body so as to be positioned outside the vehicle body,

The power receiving side connector (1) is characterized in that,

A casing water discharge hole (49) communicating with the fitting recess (33) of the fitting portion (31) is formed at the lower part of the casing (21) covered by the wire protection member (11),

In the lower part of the wire protection member (11), a wire protection member water discharge hole (grommet water discharge hole 65) is formed at a position offset in the horizontal direction relative to the housing water discharge hole (49).

(2) The power receiving side connector according to (1), wherein

A storage recess (64) recessed downward is formed at the lower portion of the electric wire protection member (11),

The storage recess (64) is arranged below the casing water discharge hole (49),

The water discharge hole (65) of the electric wire protection member is formed at the bottom (64a) of the storage recess (64).

(3) The power receiving side connector according to (1) or (2), wherein

On the casing (21), a flow path (48) is formed between the fitting recess (33) and the casing water discharge hole (49).

(4) The power receiving side connector according to (3), wherein

The housing drain hole (49) is a hole that expands from the flow path (48) toward the lower portion of the wire protection member (11).

Claims (4)

1. A power receiving side connector comprising: a housing having a fitting portion formed with a fitting recess, the fitting recess being fitted into a power supply side connector; and an electric wire protection member, the electric wire protecting The component is attached so as to cover the wire lead-out portion of the housing, and the power receiving-side connector assembles the fitting portion to the vehicle body so as to be positioned outside the vehicle body, The power receiving side connector is characterized in that, A case drain hole communicating with the inside of the fitting recess of the fitting portion is formed at the lower portion of the case covered by the electric wire protection member, In the lower part of the electric wire protection part, a water discharge hole of the electric wire protection part is formed at a position offset in the horizontal direction relative to the water discharge hole of the casing. 2. The receiving-side connector according to claim 1, wherein: A storage recess recessed downward is formed at a lower portion of the electric wire protection member, The storage recess is arranged under the water discharge hole of the casing, The water discharge hole of the electric wire protection member is formed at the bottom of the storage recess. 3. The receiving-side connector according to claim 1 or 2, characterized in that, In the housing, a flow path is formed between the fitting recess and the housing water hole. 4. The receiving-side connector according to claim 3, wherein: The housing drain hole is a hole that expands from the flow path toward the lower portion of the wire protection member.