WO2014087832A1

WO2014087832A1 - Vehicle junction box

Info

Publication number: WO2014087832A1
Application number: PCT/JP2013/081001
Authority: WO
Inventors: 幸紀塚本
Original assignee: 日産自動車株式会社
Priority date: 2012-12-07
Filing date: 2013-11-18
Publication date: 2014-06-12
Also published as: JP5861784B2; JPWO2014087832A1

Abstract

A vehicle junction box (40) prevents loosening of a mounting bolt (46) with a head (46a) covered with an arm piece (62b) of a cover (60), thus preventing a cover (44) from being removed from the vehicle junction box (40), and similarly prevents unlocking of an unlocking unit (52) for unlocking the connection of connectors (50A, 50B) on the box with the unlocking unit (52) covered with an arm piece (62a) of the cover (60).

Description

Vehicle junction box

The present invention relates to a junction box for a vehicle that is used to connect wire harnesses of various electrical components mounted in a vehicle such as a car.

As exemplified in Japanese Patent Laid-Open Publication No. 2010-226945 (Patent Document 1), a primary coil is provided on the road surface of the parking space as a power feeding unit, and a secondary coil is provided on the lower surface of the vehicle floor as a power reception unit. A technique is disclosed in which the secondary coil is supplied with electric power from the primary coil by an electromagnetic induction action, and the battery mounted on the vehicle is charged with the electric power received by the secondary coil.

In a vehicle adopting a non-contact power feeding system as described above, a junction box connecting the high-power wire harness on the battery side and the low-power wire harness on the secondary coil side may be mounted on the vehicle compartment side .

A junction box to which such a high-power wire harness is connected is required to be enclosed since a high-power circuit is disposed inside, and the housing of the junction box and a lid for closing the opening thereof are They are fastened and fixed by a plurality of mounting bolts at their peripheral portions.

Therefore, in the junction box mounted on a accessible part such as the passenger compartment side, a wire harness connected to the fastening fixing portion of the lid or the box side connector fixed on the wall surface of the housing is connected. It is desirable that the sealing performance be maintained so that a plurality of detachable components set outside the housing, such as a lock release unit for releasing the connection with the attached harness side connector, will not be removed.

According to the present invention, with a simple structure, it is possible to provide a junction box for a vehicle that can prevent the above-mentioned detachable component set outside the housing of the junction box from being accidentally removed.

The junction box for a vehicle according to the present invention has a plurality of detachable components provided outside the housing, and the wall surface of the housing is provided with a cover that collectively covers the plurality of detachable components. It is the main feature.

According to the present invention, since the attachment / detachment portion such as the fastening and fixing portion of the lid of the junction box and the unlocking portion of the box side connector fixed on the wall surface of the housing is covered by the cover, the detachment operation is disabled. .

As a result, it is possible to prevent the lid of the junction box and the harness side connector fitted and connected to the box side connector from being removed, and to improve security.

Explanatory drawing which shows schematically the non-contact electric power supply with which the junction box for vehicles of this invention is used. BRIEF DESCRIPTION OF THE DRAWINGS The external appearance perspective view which shows one Embodiment of the junction box for vehicles which concerns on this invention. Cross-sectional explanatory drawing which follows the III-III line of FIG. The external appearance perspective view which shows the arrangement | positioning condition of the lock release part of the box side connector shown in FIG. Schematic sectional explanatory drawing which shows the detachment | lose detection means of a cover.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a non-contact power feeding device in a vehicle 1 represented by an electric vehicle or a hybrid vehicle.

This non-contact power feeding device includes a power feeding device 100 which is a ground side unit and a power receiving device 200 which is a vehicle side unit. The non-contact power feeding device is not connected to the power receiving device 200 mounted on the vehicle 1 Power is supplied by contact to charge the on-vehicle battery 27.

The power feeding device 100 includes the power feeding unit 12 installed in the parking space 2 near the power feeding stand, and the power receiving device 200 is configured to face the power feeding unit 12 when the vehicle 1 is stopped at a predetermined position in the parking space 2. And a power receiving unit 22 disposed on the bottom of the housing.

A power transmission coil mainly composed of a primary coil consisting of a conductive wire is used as the power feeding unit 12, and a power receiving coil mainly composed of a secondary coil consisting of a conductive wire similarly as the power receiving unit 22 is used. Electric power is supplied contactlessly from the power transmission coil 12 to the power reception coil 22 by the electromagnetic induction action between both coils.

The ground-side power feeding device 100 includes a power control unit 11, a power transmission coil 12, a wireless communication unit 13, and a control unit 14.

The power control unit 11 is a circuit for converting alternating current power transmitted from the alternating current power supply 300 into high frequency alternating current power and transmitting power to the power transmission coil 12. The power control unit 11 includes a rectifier unit 111, a PFC circuit 112, an inverter 113 and a PFC circuit 112. And a sensor 114 for detecting the output current. The rectifying unit 111 is a circuit that is electrically connected to the AC power supply 300 and rectifies output AC power from the AC power supply 300. The PFC circuit 112 is a circuit (Power Factor Correction) for improving the power factor by shaping the output waveform (pulsating current) of the rectifying unit 111, and is connected between the rectifying unit 111 and the inverter 113.

The wireless communication unit 13 bidirectionally communicates with the wireless communication unit 23 provided on the vehicle 1 side.

The control unit 14 is a part that controls the entire power feeding device 100, and transmits a signal to the vehicle 1 side to start power supply from the power feeding device 100 by communication between the wireless communication units 13 and 23. Receives a signal from the power supply apparatus 100 indicating that it wants to receive power.

In addition to this, the control unit 14 performs switching control of the inverter 113 based on the detected current of the sensor 114 and controls the power transmitted from the power transmission coil 12. Moreover, based on the detection signal from the foreign object sensor 3 during power feeding, the power feeding is stopped or a warning signal is transmitted to the vehicle 1 side through the wireless communication units 13 and 23.

For example, when a metal detection coil is used as the foreign substance sensor 3 and a metal foreign substance intrudes or intervenes in a magnetic field formed between the power transmission coil 12 and the power receiving coil 22 during feeding, detection of the foreign substance detection sensor 3 By means of the electric signal, the control unit 14 immediately urges warning or stopping of feeding to prevent occurrence of a defect such as feeding failure due to the magnetic field of metal foreign matter.

The power receiving device 200 on the vehicle 1 side includes a power receiving coil 22, a wireless communication unit 23, a charge control unit 24, a rectifying unit 25, a relay unit 26, a battery 27, an inverter 28, a motor 29, and a notification unit 30.

The power receiving coil 22 is provided between the left and right rear wheels W on the bottom surface (floor lower surface) of the vehicle 1 or the like as described above, and the vehicle 1 is guided to a predetermined position in the parking space 2 by parking guidance restricting means not shown When being regulated and parked, it faces directly above the transmission coil 12 and is positioned at a distance from the transmission coil 12.

The rectifying unit 25 is connected to the power receiving coil 22 and includes a rectifying circuit that rectifies AC power received by the power receiving coil 22 into a direct current.

The relay unit 26 includes a relay switch that is switched on and off under the control of the charge control unit 24. That is, by turning off the relay switch, the relay unit 26 separates the high power system including the battery 27 from the low power system of the power receiving coil 22 and the rectifying unit 25 serving as the charging circuit section.

The battery 27 is configured by connecting a plurality of secondary batteries and serves as a power source of the vehicle 1. The inverter 28 is a control circuit such as a PWM control circuit having a switching element such as an IGBT, and converts DC power output from the battery 27 into AC power based on a switching control signal, and supplies the AC power to the motor 29. The motor 29 is constituted by, for example, a three-phase alternating current motor and serves as a drive source for driving the vehicle 1.

The notification unit 30 includes a warning lamp, a display or a speaker of the navigation system, and the like, and outputs light, an image, a sound, and the like to the user based on control by the charge control unit 24.

The charge control unit 24 is a controller for controlling the charge of the battery 27 and controls the wireless communication unit 23, the notification unit 30, the relay unit 26, and the like. The charge control unit 24 transmits a signal to start charging, to the control unit 14 by communication of the wireless communication units 23 and 13. The charge control unit 24 is connected to a controller (not shown) that controls the entire vehicle 1 via a CAN communication network. The controller manages the switching control of the inverter 28 and the state of charge (SOC) of the battery 27. Then, the charge control unit 24 transmits a signal to the effect that charging is ended to the control unit 14 when the controller 27 has reached full charge based on the charge state of the battery 27.

Therefore, in the non-contact power feeding device of the present embodiment, high-frequency power transmission and reception are performed in a non-contact state between the power transmission coil 12 and the power reception coil 22 by the electromagnetic induction action. In other words, when a voltage is applied to the power transmission coil 12, electromagnetic coupling occurs between the power transmission coil 12 and the power reception coil, and power (electromagnetic energy) is supplied to the power transmission coil 12 and the power reception coil 22.

2 to 5 show a vehicle junction box used for the power receiving device 200 mounted on the above-described vehicle 1.

The junction box 40 includes, for example, a high-power wire harness on the battery 27 side, a low-power wire harness on the power receiving coil 22 side including the rectifying unit 22, and a control circuit or communication circuit side including the charge control unit 24. It is used for the connection of a wire harness of low voltage system.

The relay unit 26 connected between the battery 27 and the rectifying unit 25 in the power receiving device 200 shown in FIG. 1 is incorporated in the junction box 40 together with, for example, a high-power circuit board or the like.

The junction box 40 is mounted near the power receiving coil 22 on the lower surface of the floor on the cabin side of the vehicle 1.

The junction box 40 has a rectangular box-like housing 41 opened at the upper side, which is fastened and fixed to the upper surface of the floor by a mounting bolt 43 via a fixing bracket 42A extended outward at the bottom edge, And a lid 44 closing the upper opening.

The housing 41 and the lid 44 are formed of an appropriate synthetic resin material, and the polymerization surface of the peripheral portion of the opening and the lid 44 described above does not shift the lid 44 in the horizontal direction as shown in FIG. 3 The positioning means 45 is configured by providing the steps to be fitted to each other in a shallow manner. And in the part which this level | step difference fitted, it fixes mutually by the mounting bolt (fastening fixing | fixed part) 46 as a detachment | desorption structure part in multiple places of the circumferential direction mutually.

On the wall surface of the housing 41, for example, the front rectangular rectangular wall surface 41a facing the free working space of the vehicle compartment set on the left side of the paper surface of FIG. It superposes and it has fastened and fixed by the mounting bolt 53.

In the example shown in FIG. 2, a pair of

box side connectors

50A and 50B are disposed on both sides in the longitudinal direction of the wall surface 41a.

The box side connector 50 is an unlocking portion as a detaching structure portion that releases the fitting connection with the harness side connector 81 provided at the end of the wire harness 80 as illustrated in FIG. Although 52 is provided, the above-mentioned pair of

box side connectors

50A and 50B are set as the countering side of the perimeter side so that those unlocking parts 52 may face mutually inward.

And, on the wall surface 41a of the housing 41, the plurality of detachable components set outside the housing 41, that is, at least one of the fastening and fixing portions by the mounting bolts 46 of the lid 44 described above and the box side connector A metal cover 60 is attached which collectively covers the lock release portion 52 provided at 50.

The wall surface 41a of the housing 41 is formed with a bulging portion 41b between the pair of

box side connectors

50A and 50B across the upper edge and the lower edge, and the above-mentioned cover 60 is attached thereto.

The above-mentioned lid 44 is formed with a projecting edge 44a so that the outer shape is aligned with the upper end of the bulging part 41b of the housing 41, and the attaching bolt 46 bulges both sides of this projecting edge 44a. It fastens and fixes to the upper end surface of the part 41b.

The cover 60 is a fastening plate fixing portion of the lid 44 which is extended from the base plate 61 and a strip-like base piece 61 fastened and fixed to the surface of the above-mentioned bulging portion 41 b formed on the wall surface 41 a of the housing 41. A plurality of plate-like arm pieces 62 which respectively cover the head 46 a of the mounting bolt 46 and the unlocking portion 52 of the box-side connector 50 are provided. That is, the base piece 61 is fixed in position to the wall surface 41 a of the housing 41, and is extended toward the position where each arm piece 62 is disposed.

In the present embodiment, the substantially L-shaped member is formed so as to cover the above-mentioned base piece 61 in the lengthwise direction at both ends in the length direction without covering each unlocking portion 52 of the pair of

box connectors

50A, 50B. The base of the arm piece 62a extends downward. On the other hand, a substantially L-shaped arm piece bent to cover one end of the base piece 61 in the lengthwise direction without contacting the head 46a of the mounting bolt 46 at one side of the projection 44a of the lid 44. The base of 62b extends upward.

The base piece 61 is fastened and fixed to the surface of the above-mentioned bulging portion 41 b by a mounting bolt 63 at one position in the central portion in the length direction.

Further, between the base piece 61 and the surface of the bulging portion 41b, there is provided a detent portion 64 for restricting the positional deviation of the base piece 61 in the rotational direction centering on the mounting bolt 63.

On the surface of the above-described bulging portion 41b, a rib 41c having a small amount of protrusion is provided in a grid shape. In the present embodiment, a recess 41 d is formed at the center in the longitudinal direction of the upper horizontal rib adjacent to the lower edge of the base piece 61 among the ribs 41 c, and a protrusion fitted to the recess 41 d at the lower edge of the base piece 61 An edge 61a is formed, and a locking portion 64 is configured by the recess 41d and the projecting edge 61a.

Of course, the locking portion 64 is also effective in the locking structure between the locate pin and the locate hole.

On the other hand, the housing 41 is equipped with the detachment detection means 70 which detects that the above-mentioned cover 60 was detached.

In the present embodiment, the mounting bolt 63 of the base piece 61 described above is protruded into the housing 41 through the bulging portion 41 b to be fastened and fixed. A switch 71 for turning on or off the contact point is disposed in the housing 41 by pressing the actuator 71 a by the protruding end of the mounting bolt 63, and the cover is covered by the mounting bolt 63 and the switch 71. It is assumed that 60 out of alignment detectors 70 are provided. That is, when the mounting bolt 63 is loosened and pulled out in order to remove the cover 60, the actuator 71a pushed at the projecting end returns and the contact of the switch 71 is turned off or on to detect the removal of the cover 60. It can be carried out.

The box side wire harness 47 is drawn out through the grommet 49 through the short rectangular wall surface 41 e at one end of the housing 41.

The box side wire harness 47 is branched into a main line 47a and a branch line 47b. The harness connectors 48 provided at their ends are clipped to a connector supporting bracket 42B integrally extended from the edge on the back side of the wall surface 41e in FIG.

According to the vehicle junction box 40 of the present embodiment having the above configuration, the head 46 a of the mounting bolt (detachable component) 46 is the cover 60 even if the lid 44 closing the opening of the housing 41 is removed. Therefore, the unlocking operation of the box side connector 50 is also covered by the cover 60, and the unlocking operation is disabled.

As a result, it is possible to prevent the lid 44 of the junction box 40 and the harness side connector 81 fitted and connected to the box side connector 50 from being accidentally removed.

As in the present embodiment, even if one of the mounting bolts 46 of the lid 42 is covered by the cover 60, the positioning overlapping means 45 is attached to the fastening overlapping surface of the lid 42 by attaching the positioning means 45 to the other. Even if all the mounting bolts 46 are removed, the positional deviation in the surface direction of the lid 42 is restricted, so that the lid 42 can be prevented from coming off.

On the other hand, when the cover 60 is removed from the housing 41 in order to remove the lid 44 and the harness side connector 81 intentionally, the detection means 70 immediately detects this and warns, thereby preventing unfair removal in advance. It is possible to improve security.

In particular, in the present embodiment, as the above-described detector 70, the mounting bolt 63 for fixing the cover 60 is projected into the housing 41, and the switch 71 is provided in the housing 41 in response to the movement of the projection end. It has composition.

As described above, by detecting the operation of the mounting bolt 63 of the cover 60 directly by the switch 71 and detecting the removal of the cover 60, it is possible to promote a prompt abnormal warning and effectively perform protection.

Here, particularly in the present embodiment, the cover 60 described above is one of the mounting bolts 46 for fixing the lid 61 to the strip-shaped base piece 61 fastened and fixed to the housing 41 by the mounting bolts 63 and the box side connector 50 A plurality of arm pieces 62 which respectively cover the lock release parts 52 are extended.

As a result, the cover 60 can be simply configured to have the necessary minimum size, and the size and weight can be reduced.

Moreover, since the base piece 61 is fastened and fixed to the housing 41 by the mounting bolt 63, it takes time and effort to remove the mounting bolt 63 of the base piece 61 if the cover 60 is to be removed improperly. It becomes effective.

Further, the cover 60 has a structure in which the base piece 61 is fastened and fixed to the bulging portion 41 b in the wall surface 41 a of the housing 1 at one point, and the detent portion 64 restricts the shift in the rotational direction about this fixing point. And

Thereby, the increase in the number of parts accompanying attachment of the cover 60 can be suppressed as much as possible, which can contribute to weight reduction and cost reduction.

Furthermore, when arranging a pair of

box side connectors

50A and 50B in one wall surface 41a of the housing 41, the lock release part 52 is set to the opposing surface of those circumferential sides, and the cover 60 sets the base piece 61 An arm which is set between both

connectors

50A and 50B and which has its unlocking portion 52 and one of mounting bolts 46 of lid 44 in a region corresponding to both

connectors

50A and 50B extended from base piece 61 It is set as the structure covered by

piece

62a, 62b.

Therefore, even in such a case, the cover 60 can be reduced in size and weight as a simple configuration including the base piece 61 and the required minimum number of

arm pieces

62a and 62b.

The cover 62 illustrated in FIG. 2 includes the arm piece 62a and the arm piece 62b, and discloses a preferred example in which any unlocking operation of the unlocking portion 52 of the box side connector 50 and the mounting bolt 46 of the lid 44 can not be performed. However, except for the arm piece 62b, only the release operation of the unlocking portion 52 may be disabled by the two arm pieces 62a.

Also, conversely, a plurality of arm pieces 62b can be provided except for the arm piece 62a, so that only the detachment operation of the plurality of mounting bolts 46 can be disabled.

Furthermore, the target component of the detachable structure is not limited to the lid and the connector member provided on the housing 41 described above, and may be another electric component that is externally mounted on the housing 41.

In the above embodiment, the junction box 40 mounted on the floor of the vehicle room of the power receiving device 200 in the non-contact power feeding system is exemplified. However, the junction box 40 may be mounted on a motor room. .

In addition, although the junction box 40 of the present invention is effective in terms of security when applied to one in which a high voltage unit is formed inside the box, it is not particularly limited to this.

(Specified in the US)
This international patent application relates to US designations and incorporates the benefit of priority under 35 USC 119 119 (a) on Japanese Patent Application No. 2012-267743, filed December 7, 2012, the disclosure of which is incorporated herein by reference. Quote the content.

Claims

With the housing,
A plurality of removable components arranged outside the housing;
A cover attached to a wall of the housing to collectively cover the plurality of removable components;
The junction box for vehicles characterized by having.
The junction box for a vehicle according to claim 1, wherein the detachable component covered by the cover is a fastening and fixing part set at a peripheral edge of a lid that closes the opening of the housing.
The detachable part covered by the cover is a lock release part provided in a box side connector attached to a wall surface of the housing to release connection with the harness side connector. Junction box for vehicles.
A detachable component covered by the cover is provided to at least one of the fastening and fixing parts set on the peripheral edge of the lid closing the opening of the housing, and to the box-side connector attached to the wall of the housing. The junction box for a vehicle according to claim 1, wherein the junction box is a lock release unit that releases the connection with the side connector.
The cover is a strip-shaped base piece fastened and fixed to the wall surface of the housing, extends from the base piece, and includes at least one of a fastening and fixing part of the lid and a lock release part of the box-side connector. The junction box for vehicles according to claim 4 provided with a plurality of arm pieces which each covers.
The vehicle according to claim 5, characterized in that the base piece of the cover is fastened and fixed to the wall surface of the housing at one place, and the base piece and the wall surface of the housing are provided with detents for the base piece. Junction box.
A junction box for a vehicle according to any one of claims 4 to 6, wherein
The box side connector is provided in a pair on one wall surface of the housing,
The lock release portions are respectively set on opposing surfaces of the box side connectors,
The cover is fixed to the wall surface of the housing between the box-side connectors, and the cover covers the unlocking portion of each box-side connector and the fastening fixing portion of the lid in a region corresponding to the space between the box-side connectors. Junction box for vehicles characterized by
The junction box for a vehicle according to any one of claims 1 to 4, further comprising a detachment detector which detects that the cover is detached.