JP2012230851A - Charging connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent deformation and breakage of a lead in an electronic component without increasing the number of components.SOLUTION: The charging connector 1 includes: a housing 10 attached to a vehicle body 60; a plurality of terminal fittings 15 attached to the housing 10; AC lines 21 and 22 (power lines) which are connected to the terminal fittings 15 and are derived from the housing 10; a ferrite core 30 to which the AC lines 21 and 22 are wound and which constitutes a transformer 29; and a capacitor 32 (electronic component) which is in a form where leads 34 are projected from a package 33 and in which the leads 34 are connected to the AC lines 21 and 22. The capacitor 32 is installed near the ferrite core 30.

Description

  The present invention relates to a charging connector.

  Patent Document 1 discloses a power-receiving-side charging connector provided on a vehicle body for charging a battery mounted on an electric vehicle or a plug-in hybrid vehicle. The charging connector includes a housing attached to the vehicle body, a plurality of terminal fittings attached to the housing, and a wire harness including a power line connected to the terminal fitting and led to the back side of the housing. .

  In this type of charging connector, power line transmission means (hereinafter referred to as PLC (Power Line Communication)) is provided on the vehicle side as means for transmitting and receiving information for charge control between the vehicle and the power supply apparatus. . As an example of a PLC, a transformer for taking out a signal superimposed on a power line is arranged in the vicinity of the charging connector, and a signal superimposed on the power line is extracted from the transformer to obtain a signal from the power supply device. The form which mounts the PLC unit for taking out on the circuit board arrange | positioned in the position away from the connector for charging can be considered.

  In this case, the primary coil of the transformer is configured by winding two power lines around the ferrite core, and the secondary coil is configured by winding a thin communication line connected to the PLC unit around the ferrite core. Is done.

Japanese Patent Laid-Open No. 7-192826

Electronic parts have a form in which the lead protrudes from the package, but this lead protrudes in a thin and long cantilever shape, so there is a concern that it may be deformed or broken when a foreign object hits it. The As a means for preventing deformation or breakage of the lead, it is conceivable to use a dedicated protective member for protecting the lead. In this case, however, the number of parts increases or an extra part for assembling the protective member and the lead is used. Problems such as increased work occur.
The present invention has been completed based on the above-described circumstances, and an object thereof is to prevent deformation and breakage of electronic component leads without increasing the number of components.

  As means for achieving the above object, the invention of claim 1 is derived from the housing connected to the terminal fitting, the housing attached to the vehicle body, the plurality of terminal fittings attached to the housing, and the terminal fitting. A charging line comprising: a power line; a ferrite core in which the power line is wound; and a ferrite core that constitutes a transformer; and a lead protruding from a package, wherein the lead is connected to the power line. The connector is characterized in that the electronic component is disposed in the vicinity of the ferrite core.

  According to a second aspect of the present invention, in the electronic component according to the first aspect, the electronic component is disposed in a direction in which the lead protrudes from the package toward the ferrite core.

  A third aspect of the invention is characterized in that, in the electronic component according to the first or second aspect, a region from the package to the lead in the electronic component is surrounded by a heat shrinkable tube.

<Invention of Claim 1>
Even if a foreign substance approaches the lead, the foreign substance hits the ferrite core located in the vicinity of the lead before reaching the lead, so there is no possibility that the lead is deformed or broken due to the interference of the foreign substance. In the present invention, since the ferrite core constituting the transformer is also used as a means for preventing foreign matter interference with the lead, a dedicated protective member is unnecessary.

<Invention of Claim 2>
Since the lead has a direction protruding from the package toward the ferrite core, the lead is positioned so as to be sandwiched between the package and the ferrite core. Thereby, the interference of the foreign matter with respect to the lead is prevented not only by the ferrite core but also by the package.

<Invention of Claim 3>
When the foreign matter approaches the lead without hitting the ferrite core, the foreign matter hits the heat shrinkable tube without hitting the lead directly. The impact of foreign matter on the heat shrinkable tube at this time does not act on the lead or acts on the lead in a relaxed state. Therefore, deformation and breakage of the lead can be reliably prevented.

The perspective view showing the positional relationship of the ferrite core and capacitor | condenser (electronic component) in the charging connector of Embodiment 1. FIG. A perspective view showing a state in which the condenser is surrounded by a heat shrinkable tube. Sectional view showing the ferrite core and capacitor surrounded by grommets The top view showing the positional relationship of the ferrite core and capacitor | condenser (electronic component) in the charging connector of Embodiment 2. FIG. FIG. 5 is a plan view showing a state in which a capacitor is surrounded by a heat-shrinkable tube in the second embodiment.

<Embodiment 1>
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 3, the charging connector 1 of the present embodiment is provided on the vehicle body 60, and the charging connector 1 is fitted with a power feeding connector (not shown) of the power feeding device. It has become so. When the power supply side connector is fitted to the charging connector 1, an in-vehicle battery (not shown) can be charged.

  The charging connector 1 includes a housing 10, a plurality of terminal fittings 15 accommodated in the housing 10, a wire harness 20 led out from the housing 10, and a grommet 50 surrounding the wire harness 20. . In the following description, for the sake of convenience, the direction in which the wire harness 20 is led out from the housing 10 (that is, the direction from the outside of the vehicle body 60 toward the inside of the vehicle body 60) is referred to as “rear”.

  As shown in FIG. 3, the housing 10 includes a terminal accommodating member 11 and a retainer 14 assembled from the rear with respect to the terminal accommodating member 11. The terminal accommodating member 11 is made of synthetic resin, and a plurality of chamber cavities 12 penetrating the terminal accommodating member 11 in the front-rear direction are formed in the terminal accommodating member 11. A flange portion 13 is formed on the outer periphery of the terminal accommodating member 11.

  A terminal fitting 15 is inserted into each cavity 12 from the rear (inside the vehicle). The electric wires 21 to 25 connected to the rear end portions in the insertion direction of the terminal fittings 15 are led out to the rear of the housing 10 (that is, inside the vehicle). The terminal fitting 15 can be relatively displaced in the front-rear direction within the cavity 12. Therefore, a clearance for allowing movement of the terminal fitting 15 is secured between the inner periphery of the cavity 12 and the outer periphery of the terminal fitting 15.

  The housing 10 is fixed by passing the terminal accommodating member 11 through the vehicle body 60 and bolting the flange portion 13 to the vehicle body 60. The front surface of the housing 10 fixed to the vehicle body 60 faces the outside of the vehicle body 60, and the front end portion of the housing 10 is a fitting portion (connecting portion) with the power feeding side connector. Further, as described above, since there is a clearance between the cavity 12 and the terminal fitting 15, when water adheres to the front surface of the housing 10 facing the outside of the vehicle body 60, the water is transferred between the cavity 12 and the terminal fitting 15. It can enter the inside of the vehicle body 60 (the wire harness 20 side) through the gap.

  As shown in FIG. 1, among the plurality of electric wires 21 to 25 connected to the terminal fitting 15 and led out from the housing 10, three are shielded electric wires 21, 22 and 23 having a large diameter, The book is unshielded electric wires 24 and 25 having a small diameter. Two of the three large-diameter electric wires 21 to 23 are high-voltage AC lines 21 and 22 (power lines that are constituent elements of the present invention), and one is a ground line 23 (hereinafter referred to as a GND line). is there. Terminal portions of the two AC lines 21 and 22 are connected to the first connector 36. The plurality of small-diameter electric wires are signal wires 24 and 25. Of these signal lines 24 and 25, the terminal portion of one signal line 24 is connected to the terminal portion of the ground wire 23 through the ground terminal 28. A terminal portion of another two signal lines 25 of the thin signal lines 24 and 25 and a terminal portion of the small signal line 26 branched from the ground wire 23 are connected to the second connector 37. As shown in FIG. 2, the connection portion (branch portion) between the ground wire 23 and the signal wire 26 is surrounded in a liquid-tight manner by a heat-shrinkable tube 38 coated with a solvent that melts by heating.

  As shown in FIG. 1, in addition to the above-described electric wires 21 to 26, the wire harness 20 includes a disconnection detecting resistor 27, a transformer 29 including a ferrite core 30, and a PLC (not shown) via a third connector 39. A PLC line 31 (PLC communication line) connected to the power line communication) unit and a capacitor 32 (electronic components which are constituent elements of the present invention) are provided. The disconnection detection resistor 27 is connected in the middle of the signal line 24 connected to the ground line 23 via the ground terminal 28. As shown in FIG. 2, the disconnection detection resistor 27 and the connection portion between the disconnection detection resistor 27 and the signal line 24 are surrounded in a liquid-tight manner by a heat-shrinkable tube 40 coated with a solvent that melts by heating. Has been.

  As shown in FIGS. 1 to 3, the transformer 29 includes a primary coil formed by winding one AC wire 21 around the ring-shaped ferrite core 30 and winding the other AC wire 22 around two times, The ferrite core 30 is provided with a secondary coil formed by winding a folded portion of the PLC wire 31. The transformer 29 is for taking out a signal superimposed on the AC lines 21 and 22, and is disposed in the vicinity of the housing 10. The PLC unit extracts a signal from the power feeding device by extracting the signal superimposed on the AC lines 21 and 22 from the transformer 29, and is a circuit board (not shown) arranged at a position away from the charging connector 1. (Omitted).

  As shown in FIGS. 1 and 3, the capacitor 32 is connected between the two AC lines 21 and 22. The connection position of the capacitor 32 and the AC wires 21 and 22 is behind the transformer 29 (on the opposite side to the housing 10 with the transformer 29 in between) and relatively close to the ferrite core 30. The capacitor 32 includes a package 33 made of a relatively hard material that accommodates a functional component (not shown), and two elongated leads 34 that extend in a cantilevered manner from the functional component and protrude in parallel to the outside of the package 33. And is configured. The thickness (height dimension) and width dimension of the package 33 are smaller than the outer diameter dimension of the ferrite core 30.

  The capacitor 32 and the two AC wires 21 and 22 are connected to each other through two connection wires 35 having a smaller diameter than the AC wires 21 and 22. This connection structure is as follows. The capacitor 32 is arranged in a direction in which the lead 34 protrudes forward from the package 33 (that is, the direction approaching the ferrite core 30). That is, the lead 34 is located behind the ferrite core 30 and the package 33 is located behind the lead 34. The end portions of the connecting wires 35 are connected to the front end portions (projecting end portions) of the leads 34 via the splice terminals 41 so as to be arranged in parallel. The terminal direction of the connection end of the connection wire 35 is the front-rear direction opposite to the protruding direction of the lead 34.

  The connecting wire 35 connected to one lead 34 is folded back, and the back end portion of the folded connecting wire 35 is connected to one AC line 21 via a splice terminal 42. The connecting wire 35 connected to the other lead 34 is folded back and then folded forward at the rear of the package 33, and the front end portion of the folded portion forward is connected to the other via the splice terminal 43. Connected to the AC line 22. The sheath 44 and the shield braided wire 45 are removed in a region from the front end portion of the AC wires 21 and 22 connected to the terminal fitting 15 to a position slightly behind the connecting portion with the connecting wire 35. It is an unshielded area. The cores are removed from the connection portions of the AC wires 21 and 22 with the connection wires 35 to expose the conductors, and the splice terminals 42 and 43 are fixed to the conductors.

  As shown in FIGS. 2 and 3, the capacitor 32, including both the package 33 and the two leads 34, is collectively surrounded by a heat-shrinkable tube 46 in which a solvent that melts by heating is applied to the inner periphery. Has been. The heat-shrinkable tube 46 is heated and reduced in diameter only at both front and rear ends, and one connecting wire 35 is inserted in a liquid-tight manner in the front-side diameter-reduced portion, and in the rear-side diameter-reduced portion. The other connecting wire 35 is inserted in a liquid-tight manner. Therefore, the package 33 and the lead 34 are surrounded by a large-diameter region of the heat-shrinkable tube 46 that is not heat-shrinked.

  Further, the connecting portion between the connecting wire 35 and the AC wires 21 and 22 is also surrounded in a liquid-tight manner by a heat shrinkable tube 47 in which a solvent that melts by heating is applied to the inner periphery. Furthermore, a boundary portion between the non-shielded region where the sheath 44 and the braided wire 45 are removed from the AC wires 21 and 22 and the shielded region where the sheath 44 and the braided wire 45 are not removed (that is, the connecting wire 35 and the AC wire A binding tape 48 is wound as a simple waterproof means around the connection portion with the wires 21 and 22. Further, slightly behind the boundary portion around which the binding tape 48 is wound, the AC wires 21 and 22 have only the sheath 44 removed by a predetermined length to expose the braided wire 45. The exposed portion of the braided wire 45 and the region adjacent to the front and rear of the exposed portion are surrounded in a liquid-tight manner by a heat-shrinkable tube 49 to which a solvent that melts by heating is applied on the inner periphery.

  As shown in FIG. 3, the grommet 50 has a cylindrical shape that penetrates in the front-rear direction as a whole. The diameter of the grommet 50 is maximum at the front end, gradually decreases toward the rear, and is minimum at the rear end. The front end portion of the grommet 50 is attached to the rear surface of the flange portion 13 in a liquid-tight manner. Further, the rear end portion of the grommet 50 is behind the portion of the wire harness 20 around which the binding tape 48 is wound, and only the sheath 44 of the AC wires 21 and 22 is removed, and the heat shrinkable tube 49 is used. It is arrange | positioned in the position ahead of the enclosed part. Therefore, the ferrite core 30 (transformer 29) and the capacitor 32 in the wire harness 20 are accommodated in the grommet 50, and only the sheath 44 is removed from the connectors 36, 37, and 39 and the AC wires 21 and 22. The portion is disposed outside the rear of the grommet 50.

  Since the internal space of the grommet 50 faces the rear surface of the housing 10, the water that has adhered to the front end portion of the housing 10 and passed through the gap between the cavity 12 and the terminal fitting 15 enters the inside of the grommet 50. Here, since the drainage hole 51 penetrating the bottom surface is formed in the grommet 50, the water that has entered the grommet 50 is discharged from the drainage hole 51 through the drain hose 52 to a predetermined space outside the grommet 50. Is done.

  The charging connector 1 of this embodiment includes a housing 10 attached to a vehicle body 60, a plurality of terminal fittings 15 attached to the housing 10, and AC wires 21 and 22 connected to the terminal fitting 15 and led out from the housing 10. AC wires 21 and 22 are wound, and the lead 34 is protruded from the ferrite core 30 constituting the transformer 29 and the package 33, and the lead 34 is connected to the AC wires 21 and 22. The capacitor 32 is provided, and the capacitor 32 is arranged in the vicinity of the ferrite core 30.

  According to this configuration, even if a foreign substance (not shown) approaches the lead 34, the foreign substance hits the ferrite core 30 located near the lead 34 before reaching the lead 34. There is no risk of deformation or breakage due to foreign matter interference. In the present embodiment, since the ferrite core 30 constituting the transformer 29 is also used as a means for preventing foreign matter interference with the lead 34, a dedicated protective member is unnecessary.

  Further, the capacitor 32 is disposed in a direction in which the leads 34 protrude from the package 33 toward the ferrite core 30. According to this configuration, the lead 34 is positioned so as to be sandwiched between the package 33 and the ferrite core 30, so that foreign matter interference with the lead 34 is prevented not only by the ferrite core 30 but also by the package 33.

  Further, the entire capacitor 32 including the package 33 and the leads 34 is surrounded by a heat shrinkable tube 46. In addition, since the region surrounding the capacitor 32 (the package 33 and the lead 34) of the heat shrinkable tube 46 is not thermally contracted, the space surrounding the package 33 and the lead 34 functions as a closed interference space. Therefore, when the foreign matter approaches the lead 34 without hitting the ferrite core 30, the foreign matter only needs to hit the non-heat shrinkable region of the heat shrinkable tube 46, and the impact of the foreign matter on the heat shrinkable tube 46 acts on the lead 34. There is no. Thereby, the deformation | transformation and breakage of the lead | read | reed 34 can be prevented reliably.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS. The charging connector 2 according to the second embodiment has a connection configuration between the capacitor 70 (electronic component which is a constituent element of the present invention) and the connection wires 74 and 76 and a mounting configuration of the heat shrinkable tubes 75 and 79 with respect to the capacitor 70. The configuration is different from that of the first embodiment. Since other configurations are the same as those of the first embodiment, the same configurations are denoted by the same reference numerals, and descriptions of structures, operations, and effects are omitted.

  The capacitor 70 is arranged in a direction in which the two leads 72 protrude forward from the package 71 toward the ferrite core 30 in the direction of the ferrite core 30. The two leads 72 are bent obliquely so that the interval is narrowed toward the front end portion (projecting end portion). A rearward connection end portion of the first connection wire 74 is connected to the front end portion of each lead 72 via a splice terminal 73, respectively. A connecting portion between the front end portion of one lead 72 and the first connecting wire 74 is surrounded in a liquid-tight manner by a heat-shrinkable tube 75 in which a solvent that melts by heating is applied to the inner periphery. The connecting portion between the front end portion of the other lead 72 and the first connecting wire 74 is also liquid-tight by a heat shrinkable tube 75 coated with a solvent that melts by heating, independently of the one lead 72. It is surrounded by.

  Each first connecting wire 74 connected to the lead 72 is folded back to the rear, and further folded back to the front behind the package 71. A rearward connecting end portion of the second connecting wire 76 is connected to the front end portion of the portion folded back forward by soldering. The connecting portion between the first connecting wire 74 and the second connecting wire 76 is surrounded in a liquid-tight manner by a heat-shrinkable tube 77 in which a solvent that melts by heating is applied to the inner periphery. Similarly to the first embodiment, the front end portion of the second connecting wire 76 is connected to a conductor exposed by removing the core of the AC wires 21 and 22 via a splice terminal (not shown). The connecting portion between the AC wires 21 and 22 and the second connecting wire 76 is also surrounded in a liquid-tight manner by a heat-shrinkable tube 78 in which a solvent that melts by heating is applied to the inner periphery.

  The entire package 71 of the capacitor 70 and the region of the lead 72 excluding the front end are surrounded in a liquid-tight manner by a heat-shrinkable tube 79 coated with a solvent that melts by heating. Since the heat shrinkable tube 79 is thermally contracted over the entire length (region extending from the front end to the rear end), the package 71 and the lead 72 are in close contact with the heat shrinkable tube 79. At the front end portion of the heat-shrinkable tube 79, two heat-shrinkable tubes 75 that individually surround the front end portions of the two leads 72 are inserted in a state of being in close contact along the left and right sides, and the two first A portion of the connecting wire 74 that is folded back is inserted in a state of being in close contact with the heat shrinkable tube 75. On the other hand, at the rear end portion of the heat-shrinkable tube 79, the rear end portions of the regions folded back to the rear of the two first connecting wires 74 are inserted side by side.

  In the second embodiment, the two heat shrinkable tubes 75 that individually surround the two leads 72 are arranged so as to be in close contact with each other, and the arranged portions are fixed by the heat shrinkable tube 79. According to this configuration, each lead 72 is supported at both front and rear ends by the package 71 and the heat shrinkable tube 75, so that it is deformed or damaged as compared with the case where it exists in a cantilever shape. Is unlikely to occur.

  Moreover, the heat-shrinkable tube 79 that surrounds the package 71 in a close contact state is surrounded not only by the package 71 but also in the region of the lead 72 that is not surrounded by the heat-shrinkable tube 75 and the lead 72 by the heat-shrinkable tube 75. It is in close contact over the region. Therefore, deformation and breakage of the lead 72 are also prevented by the rigidity of the heat shrinkable tube 79.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the capacitor (electronic component) is arranged in a direction in which the lead protrudes from the package toward the ferrite core, but the electronic component has a direction in which the lead protrudes from the package in the opposite direction to the ferrite core. The leads may be arranged in a direction protruding in a direction intersecting with a virtual line connecting the package and the ferrite core.
(2) In the above embodiment, the protruding direction of the lead and the terminal direction of the connecting end of the connecting wire to the lead are opposite to each other, but the protruding direction of the lead and the connection to the lead of the connecting wire It is good also considering the terminal direction of an edge as the same direction. In this case, both the two leads or only one of the two leads may align the protruding direction of the lead and the terminal direction of the connecting wire in the same direction.
(3) In the above embodiment, the capacitor (electronic component) has a configuration in which the two leads protrude in the same direction, but the capacitor (electronic component) has two leads in the opposite directions from the package. The form which protrudes may be sufficient.
(4) In the above embodiment, the AC line (power line) and the lead of the capacitor (electronic component) are connected via the connecting wire having a diameter smaller than that of the AC line (power line). ) Leads may be directly connected.

DESCRIPTION OF SYMBOLS 1 ... Connector for charging 10 ... Housing 15 ... Terminal metal fittings 21, 22 ... AC line (power line)
29 ... Transformer 30 ... Ferrite core 32 ... Capacitor (electronic component)
33 ... Package 34 ... Lead 46 ... Heat-shrinkable tube 60 ... Car body 2 ... Charging connector 70 ... Capacitor (electronic component)
71 ... Package 72 ... Lead 79 ... Heat shrink tube

Claims (3)

A housing attached to the vehicle body;
A plurality of terminal fittings attached to the housing;
A power line connected to the terminal fitting and led out from the housing;
The power line is wound, and the ferrite core constituting the transformer,
In a charging connector including a lead protruding from a package, the lead including an electronic component connected to the power line,
The charging connector, wherein the electronic component is disposed in the vicinity of the ferrite core.   The charging connector according to claim 1, wherein the electronic component is disposed in a direction in which the lead protrudes from the package toward the ferrite core.   The charging connector according to claim 1, wherein a region from the package to the lead in the electronic component is surrounded by a heat shrinkable tube.

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