JP2017208248A - Charging connector - Google Patents

Abstract

An object of the present invention is to provide a charging connector capable of reducing the number of parts and simplifying the assembly process. A charging connector (1) is housed in each of an inlet housing (10) having a plurality of terminal housing portions (21, 31) fixed to a vehicle body panel (90) and a plurality of terminal housing portions (21, 31). A plurality of charging terminals 40 and signal terminals, a plurality of terminal retaining portions 61 and 71 locked to the charging terminals 40 and the signal terminals, respectively, and an inlet fitting that fits into the inlet housing 10. A retainer 50 including a joint portion 51 and a retainer seal ring 80 which is attached to the inlet fitting portion 51 and seals a gap with the inlet housing 10 are provided. [Selection] Figure 2

Description

  The technology disclosed in this specification relates to a charging connector.

  An electric vehicle and a plug-in hybrid vehicle are provided with a charging connector fitted to a power supply connector provided in a power supply facility in order to charge a battery. The charging connector includes a housing including a plurality of terminal accommodating portions, and a plurality of power receiving terminals and signal terminals accommodated in each of the plurality of terminal accommodating portions (see Patent Document 1).

JP 2014-154370 A

  In the above-described charging connector, retainers for preventing the terminals accommodated therein from being detached are attached to the plurality of power supply terminal accommodating portions and the plurality of signal terminal accommodating portions, respectively. For this reason, the number of parts has increased and the assembly process has become complicated.

  The charging connector disclosed in the present specification includes an inlet housing that includes a plurality of terminal accommodating portions and is fixed to a vehicle body, and a plurality of terminal fittings that are accommodated in each of the plurality of terminal accommodating portions. A retainer comprising: a plurality of terminal retaining portions that are respectively engaged with the plurality of terminal fittings; and an inlet fitting portion that is fitted to the inlet housing; and the inlet that is attached to the inlet fitting portion. A sealing member for sealing a gap with the housing.

  According to the above configuration, a plurality of terminal fittings can be collectively prevented by one retainer, and a space around the terminal fitting can be collectively sealed by a seal member attached to the retainer. . Thereby, the number of parts can be reduced and the assembly process can be simplified.

  In the above configuration, the inlet fitting portion includes a locking wall having a locking hole, and the seal member is interposed between the inlet fitting portion and the inlet housing; and A locking projection extending from the seal body, the locking projection extending from the sealing body and inserted into the locking hole, and projecting outward from the shaft portion to be locked to the locking wall. The inlet fitting portion may include a drop prevention wall that rises from the locking wall and is disposed adjacent to the head.

  According to said structure, it can avoid that an operator's hand etc. touch the head of a latching protrusion during the transportation of a retainer or an assembly | attachment by the drop-off prevention wall. As a result, it is possible to avoid that the locking projection comes out of the locking hole and the seal member falls off the retainer.

  According to the technique disclosed in this specification, a charging connector capable of reducing the number of parts and simplifying the assembly process can be provided.

Front view of the charging connector of the embodiment AA line sectional view of FIG. Exploded perspective view of charging connector Sectional drawing which cut | disconnected the inlet housing in the same position as the AA of FIG. Sectional drawing which cut | disconnected the terminal for charge in the same position as the AA line of FIG. Sectional drawing which cut the retainer at the same position as the AA line of FIG. Perspective view of retainer-1 Perspective view of retainer-2 Rear view of retainer BB sectional view of FIG. CC sectional view of FIG.

  A first embodiment will be described with reference to FIGS. The charging connector 1 according to the present embodiment is a quick charging connector that conforms to the CHAdeMO standard and is used for charging a battery mounted on a vehicle, which is provided in a vehicle such as an electric vehicle or a plug-in hybrid vehicle. It is done. By charging and connecting a power supply connector provided in a power supply facility to the charging connector 1, the battery is charged.

  2 and 3, the charging connector 1 includes an inlet housing 10 fixed to a vehicle body panel 90 (corresponding to a body) and a plurality of charging terminals 40 (held by the inlet housing 10). And a plurality of signal terminals (not shown), a retainer 50 assembled to the inlet housing 10, and a retainer seal ring 80 (corresponding to a seal member) attached to the retainer 50. FIG. 3 illustrates only one charging terminal 40 among a plurality of charging terminals 40 and signal terminals.

  The inlet housing 10 is made of synthetic resin, and as shown in FIGS. 1, 3, and 4, a connector fitting portion 11, a mounting plate 14, a mounting cylinder portion 15, four lock protrusions 16, Four terminal accommodating portions 21 and 31 are provided.

  The connector fitting portion 11 is a portion to which a power feeding connector is fitted. As shown in FIG. 4, the disk-like rear wall portion 12 and the rear wall portion 12 from the peripheral edge to the rear wall portion 12. It is a bottomed cylindrical part provided with the cylindrical food | hood part 13 extended perpendicularly | vertically.

  As shown in FIGS. 3 and 4, the mounting plate 14 is a plate-like portion having a rectangular outer shape that extends outward from the hood portion 13.

  The mounting cylinder portion 15 is a portion where the retainer 50 is assembled, and as shown in FIGS. 3 and 4, the outer diameter of the mounting cylinder portion 15 is larger than that of the hood portion 13 disposed on the back side of the connector fitting portion 11. It is a cylindrical part. The mounting cylinder portion 15 is arranged so that the position of the axial center is deviated from the position of the axial center of the connector fitting portion 11, a part is continuous from the back wall part 12, and the other part is continuous from the mounting plate 14. Yes.

  Each of the four lock protrusions 16 is a protrusion that protrudes outward from the outer peripheral surface of the mounting cylinder 15 as shown in FIG. 3.

  As shown in FIG. 1, the four terminal accommodating portions 21 and 31 are composed of two first terminal accommodating portions 21 and two second terminal accommodating portions 31.

  Each of the two first terminal accommodating portions 21 is a portion that accommodates the charging terminal 40, and includes a small tubular portion 22 and a large tubular portion 23 as shown in FIG. 4. The small tube portion 22 is a cylindrical portion that extends from the back wall portion 12 and is disposed inside the connector fitting portion 11. The large tube portion 23 extends from the back wall portion 12 to the opposite side of the small tube portion 22 and is a cylindrical portion disposed inside the mounting tube portion 15, and has an outer diameter that is slightly larger than the small tube portion 22. It is arranged coaxially with the small tube portion 22. The back wall portion 12 has a through hole 24 that communicates the internal space between the large tube portion 23 and the small tube portion 22.

  Each of the two second terminal accommodating portions 31 is a portion that accommodates a signal terminal, and as shown in FIG. 1, a cylindrical surrounding wall portion 32 that is disposed through the back wall portion 12, and A plurality of housing cylinders 33 are provided inside the surrounding wall portion 32 and are disposed through the back wall portion 12.

  In the inlet housing 10, the mounting plate 14 is fixed to the body panel 90, and the mounting cylinder portion 15 is disposed toward the inside of the vehicle.

  Each of the two charging terminals 40 is a metal female terminal, and as shown in FIG. 5, is configured as a column as a whole, and includes a main body portion 41, an electric wire connection portion 44, and a terminal connection. A portion 45 and a flange portion 47 are provided.

  The main body 41 includes a cylindrical large-diameter portion 42 and a cylindrical small-diameter portion 43 that is continuous from one end of the large-diameter portion 42 and has a smaller diameter than the large-diameter portion 42. The electric wire connection portion 44 is a cylindrical shape continuous from the small diameter portion 43, and is a closed barrel type crimping portion that is crimped to one end portion of the electric wire connected to the battery. The terminal connection portion 45 is a portion connected to a power supply terminal provided in the power supply connector, and includes a plurality of contact pieces 46 extending from the main body portion 41. The plurality of contact pieces 46 extend from the main body 41 and are provided with a plurality of slits intermittently extending in the circumferential direction from the opening edge toward the main body 41 in a cylindrical portion that opens to the opposite side of the main body 41. Is formed by. This type of terminal may be referred to by a name such as a slot terminal. The flange portion 47 is a bowl-shaped portion that protrudes outward from the outer peripheral surface of the large-diameter portion 42, and is disposed on the edge adjacent to the small-diameter portion 43 in the large-diameter portion 42. An annular terminal seal ring 48 is attached to the outer peripheral surface of the small diameter portion 43.

  The two charging terminals 40 are accommodated in each of the two first terminal accommodating portions 21. As shown in FIG. 2, the large diameter portion 42 and the terminal connection portion 45 of each charging terminal 40 are accommodated inside the small cylinder portion 22, and the small diameter portion 43 and the wire connection portion 44 are inside the large cylinder portion 23. The flange portion 47 is in contact with the peripheral edge portion of the through hole 24 in the back wall portion 12.

  Although not shown in detail, the signal terminal has the same external shape as the charging terminal 40 and is a terminal that is slightly smaller than the charging terminal 40. Each of the plurality of signal terminals is housed in each of the plurality of housing cylinders 33.

  As shown in FIGS. 7 and 8, the retainer 50 includes an inlet fitting portion 51, a cover fitting portion 57, four terminal retaining portions 61 and 71, and four lock frame portions 58. ing.

  As shown in FIGS. 7, 8, and 9, the inlet fitting portion 51 includes a disc-shaped main plate portion 52 (corresponding to a locking wall), and an outer cylinder portion 53 and an inner cylinder that are continuous from the main plate portion 52. A portion 54 and four dropout prevention walls 56 are provided. The outer cylinder portion 53 is a cylindrical portion that extends perpendicularly from the outer peripheral edge of the main plate portion 52 to the main plate portion 52. The inner cylinder part 54 is a cylindrical part that is connected to the main plate part 52 and is disposed inside the outer cylinder part 53 with a gap from the outer cylinder part 53. A gap surrounded by the outer cylinder portion 53, the inner cylinder portion 54, and the main plate portion 52 is a mounting groove portion 55 into which the mounting cylinder portion 15 is fitted.

  The main plate portion 52 has four locking holes 52H. As shown in FIGS. 8 and 10, each locking hole 52 </ b> H is formed in a region (a portion corresponding to the groove bottom of the mounting groove portion 55) sandwiched between the outer cylinder portion 53 and the inner cylinder portion 54 in the main plate portion 52. It is a hole that is disposed and penetrates through the main plate portion 52.

  As shown in FIGS. 8, 9, and 10, each of the four dropout prevention walls 56 is a plate wall that rises perpendicularly from the outer peripheral edge of the main plate portion 52 to the main plate portion 52 and on the side opposite to the outer cylinder portion 53. It is a shape part, Comprising: It arrange | positions adjacent to each of the four locking holes 52H.

  As shown in FIG. 8, the cover fitting portion 57 is a cylindrical portion that extends from the main plate portion 52 to the opposite side of the outer cylinder portion 53 and the inner cylinder portion 54. The cover fitting portion 57 is configured in a cylindrical shape smaller than the inner cylinder portion 54, and the position of the shaft center is deviated from the position of the axis center of the inner cylinder portion 54. The cover fitting portion 57 is attached with a cover (not shown) that is connected to each charging terminal 40 and the signal terminal and covers the electric wires led out from the terminal accommodating portions 21 and 31. .

  As shown in FIGS. 7 and 9, the four terminal retaining portions 61, 71 are composed of two first terminal retaining portions 61 and two second terminal retaining portions 71.

  Each of the two first terminal retaining portions 61 is a portion that retains each of the charging terminals 40 accommodated in the two first terminal accommodating portions 21, and as shown in FIG. A portion 62 and a second tube portion 63 that continues from the first tube portion 62 are provided. As shown in FIG. 6, the first cylindrical portion 62 is a cylindrical portion that extends from the main plate portion 52 and is disposed inside the inner cylindrical portion 54. As shown in FIG. 6, the second cylindrical portion 63 is a cylindrical portion having a diameter smaller than that of the first cylindrical portion 62 and continuing from the extending end of the second cylindrical portion 63. A part of the second cylinder part 63 is arranged inside the first cylinder part 62, and the remaining part extends outside the first cylinder part 62 and is arranged inside the cover fitting part 57. As shown in FIG. 2 and FIG. 6, the inner cylinder portion 54 has an enlarged diameter portion 64 that receives the terminal seal ring 48 attached to the charging terminal 40 inside, and an inner diameter smaller than the enlarged diameter portion 64. It has a reduced diameter portion 65 for receiving a part of the small diameter portion 43 of the charging terminal 40 and the wire connecting portion 44 therein.

  In the state where the retainer 50 is assembled to the inlet housing 10, as shown in FIG. 2, the first cylindrical portion 62 and the portion of the second cylindrical portion 63 that is disposed inside the first cylindrical portion 62 are: The flange portion 47 of the charging terminal 40 is accommodated between the inner wall portion 12 and the rear wall portion 12 so as to be locked. As a result, the charging terminal 40 is prevented from coming off. The terminal seal ring 48 seals the gap between the inner peripheral surface of the enlarged diameter portion 64 and the outer peripheral surface of the small diameter portion 43 of the charging terminal 40.

  As shown in FIGS. 7 and 8, each of the two second terminal retaining portions 71 is constituted by three or four retaining cylinder portions 72 that are disposed through the main plate portion 52. Although not shown in detail, each retaining cylinder 72 is housed inside each housing cylinder 33 in a state where the retainer 50 is assembled to the inlet housing 10, and a flange provided in each signal terminal is connected to the rear wall section. 12 to be locked. Thereby, the signal terminal is prevented from coming off.

  Each of the four lock frame portions 58 is a portion that engages with each of the four lock protrusions 16. As shown in FIG. 7, each lock frame portion 58 is a plate-like portion that extends from the extending end of the outer cylinder portion 53 along the axial direction of the outer cylinder portion 53. A lock hole 59 for receiving each of the protrusions 16 is provided. In a state where the retainer 50 is assembled to the inlet housing 10, the lock protrusions 16 are engaged with the lock frame portions 58 by the lock protrusions 16 entering the lock holes 59 of the lock frame portions 58. As a result, the retainer 50 is held in the assembled state with respect to the inlet housing 10.

  The retainer seal ring 80 is a member made of an elastic member such as rubber, and includes a seal body 81 and four locking projections 82 protruding from the seal body 81 as shown in FIG. Yes. The seal body 81 is formed in an annular shape, and is disposed inside the mounting groove portion 55 so as to be in close contact with the outer peripheral surface of the inner cylinder portion 54. As shown in FIG. 11, the locking protrusion 82 has a small plate-like shaft portion 83 that protrudes from the seal body 81 and a head portion 84 that is disposed at the protruding end of the shaft portion 83. The head portion 84 is formed in a trapezoidal plate shape that extends from the shaft portion 83 to the side opposite to the seal body 81 and projects outward from both side edges of the shaft portion 83.

  When the retainer seal ring 80 is attached to the retainer 50, the heads 84 of the four locking projections 82 pass through the locking holes 52H while being crushed. In the state where the mounting is completed, the seal body 81 is fitted into the mounting groove portion 55, and each head portion 84 is elastically restored, and as shown in FIG. By being locked, the retainer seal ring 80 is prevented from falling off from the retainer 50.

  In a state where the retainer seal ring 80 is mounted on the retainer 50, as shown in FIG. 9, each of the four drop-off prevention walls 56 is located adjacent to each head 84 of each of the four locking projections 82. ing. As shown in FIG. 11, each dropout prevention wall 56 has an outer shape that is slightly larger than the head portion 84, and is arranged along the surface of the head portion 84 that faces the outer peripheral edge side of the main plate portion 52.

  When the retainer 50 is assembled to the inlet housing 10, the inlet fitting portion 51 is fitted to the mounting cylinder portion 15. As shown in FIG. 2, the mounting cylinder portion 15 enters the inside of the mounting groove portion 55, and the seal body 81 is sandwiched between the mounting cylinder portion 15 and the inner cylinder portion 54. The gap with the cylindrical portion 54 is sealed.

  As described above, according to this embodiment, the charging connector 1 includes the terminal housing 21 and 31 and the inlet housing 10 that is fixed to the vehicle body panel 90 (corresponding to the body) and the plurality of terminals. A plurality of charging terminals 40 and signal terminals housed inside the housing parts 21 and 31, and a plurality of terminal retaining portions 61 and 71 that are respectively locked to the plurality of charging terminals 40 and signal terminals. And a retainer 50 that includes an inlet fitting portion 51 that fits into the inlet housing 10, and a retainer seal ring 80 that is attached to the inlet fitting portion 51 and seals a gap between the inlet housing 10.

  According to the above configuration, the plurality of charging terminals 40 and signal terminals are collectively prevented by one retainer 50, and the charging is performed by the retainer seal ring 80 attached to the retainer 50. The space around the terminal 40 and the signal terminal can be collectively sealed. Thereby, the number of parts can be reduced and the assembly process can be simplified.

  In addition, the inlet fitting portion 51 includes a main plate portion 52 having a locking hole 52H, and a seal body 80 for the retainer is interposed between the inlet fitting portion 51 and the inlet housing 10; The locking projection 82 is connected to the seal body 81, and the locking projection 82 extends from the seal body 81 and is inserted into the locking hole 52 </ b> H, and projects outward from the shaft 83 to the main plate portion 52. The inlet fitting portion 51 rises from the main plate portion 52 and includes a drop-off prevention wall 56 disposed adjacent to the head portion 84.

  According to the above configuration, the drop-off prevention wall 56 can prevent the operator's hand from touching the head portion 84 of the locking projection 82 during transportation or assembly of the retainer 50. Thereby, it can be avoided that the locking projection 82 comes out of the locking hole 52H and the retainer seal ring 80 is dropped from the retainer 50.

<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) In the above embodiment, the retainer 50 is held in the assembled state with respect to the inlet housing 10 by the engagement of the lock protrusion 16 of the inlet housing 10 and the lock frame portion 58 of the retainer 50. The engagement structure between the inlet housing and the retainer is not limited to the above embodiment, and a general engagement structure can be adopted.

(2) In the above-described embodiment, the drop-off prevention wall 56 is a plate-wall-like portion disposed adjacent to the head 84. However, the shape of the drop-off prevention wall is not limited to the above-described embodiment. It may be a cylindrical shape surrounding the periphery of the part.

DESCRIPTION OF SYMBOLS 1 ... Charging connector 10 ... Inlet housing 21 ... 1st terminal accommodating part (terminal accommodating part)
31 ... 2nd terminal accommodating part (terminal accommodating part)
40 ... Terminal for charging (terminal fitting)
50 ... Retainer 51 ... Inlet fitting portion 52 ... Main plate (locking wall)
52H ... Locking hole 56 ... Fall-off prevention wall 61 ... First terminal retaining portion (terminal retaining portion)
71 ... Second terminal retaining portion (terminal retaining portion)
80 ... Retainer seal ring (seal member)
81 ... Seal body 82 ... Locking projection 83 ... Shaft portion 84 ... Head

Claims (2)

An inlet housing provided with a plurality of terminal accommodating portions and fixed to a vehicle body;
A plurality of terminal fittings accommodated in each of the plurality of terminal accommodating portions;
A retainer comprising: a plurality of terminal retaining portions that are respectively engaged with the plurality of terminal fittings; and an inlet fitting portion that is fitted to the inlet housing;
A charging connector comprising: a sealing member that is mounted on the inlet fitting portion and seals a gap with the inlet housing. The inlet fitting portion includes a locking wall having a locking hole,
The seal member includes a seal body interposed between the inlet fitting portion and the inlet housing, and a locking protrusion continuous from the seal body,
The locking projection has a shaft portion extending from the seal body and inserted into the locking hole, and a head portion protruding outward from the shaft portion and locked to the locking wall,
The charging connector according to claim 1, wherein the inlet fitting portion includes a drop prevention wall that rises from the locking wall and is disposed adjacent to the head.

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