JP2011238359A - High voltage circuit breaker device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a switch from being unintentionally changed over or enable a confirmation of a changeover state of the switch, to prevent unexpected manual operation or electric shock by improving visibility with an arrangement for easy access, and to enable the arrangement for easy access by improving layout property with miniaturization.SOLUTION: In a high voltage circuit breaker device for a vehicle including a safety switch for changing over a power supply breaking state of high voltage supplied from an electronic power source, there is provided a cover including a visual recognition unit for confirming the ON and OFF of change-over selection state of the safety switch located at the each position.

Description

  The present invention relates to a high voltage circuit breaker for a vehicle, and in particular to prevent unintentional switching of a switch, while increasing the visibility by arranging the switch to be easily accessible and improving the layout by reducing the size of the vehicle. The present invention relates to a voltage circuit breaker.

Electric vehicles and hybrid vehicles have a high-voltage circuit, and there is a risk of electric shock to workers when assembling or servicing the vehicle. Therefore, a high-voltage circuit breaker is generally set to prevent electric shock. .
In the case of a plug-type shut-off device (also referred to as “safety plug”), since the size required for installation is large, according to Japanese Patent Laid-Open No. 10-214544, a handle type is proposed. A large space of at least several liters is required for mounting on the vehicle.
For this reason, there is a switch lever type safety device that requires a small mounting space (also referred to as a “safety switch”).
In addition to assembling and service, this safety plug is also used to prevent an electric shock of a rescuer by removing the safety plug as a response to a rescue in a vehicle accident.
Further, when the safety plug is pulled out, there is a possibility of electric leakage in the plug portion, so the operator needs to wear insulating gloves.

JP 2006-136097 A

By the way, in the conventional high voltage circuit breaker for a vehicle, the user is not allowed to operate the breaker in the first place, and a warning label alerts the user not to touch.
In general, the switch is not limited to a vehicle, and a switch that mechanically switches the contact state (conduction / cutoff) by human operation may cause an electric shock when the switch lever is operated due to electric leakage or the like.
At this time, it is important not to cause electric leakage, but it is also important to prevent the switch from being inadvertently operated.
Many battery packs are made into a single unit, and the unit is provided with a safety plug or a safety switch as a single shut-off device.
Although what is disclosed by the above-mentioned patent document 1 is an example which comprises a safety switch by attachment or detachment of a safety plug, it is necessary to ensure the space which installs a large sized safety plug, and the space which performs extraction work.
In order to prevent the user of the vehicle from touching the safety plug by mistake, the safety plug is generally laid out so that the safety plug cannot be accessed unless various parts are removed.
However, in the case of a layout in which various parts need to be removed for access to the safety plug (also referred to as “barrier structure”), it is inconvenient that it cannot be operated quickly when urgent operation is required. There is.
On the other hand, when the safety plug is laid out in an easily accessible place, a general user such as a driver has a structure with few barriers, which causes an inconvenience that undesired user access occurs.
In addition, in order to solve these inconveniences, when a cover is provided by a general shielding member, there is an inconvenience that the state of the safety switch cannot be confirmed as it is.
Further, when a plurality of battery packs are mounted, there are a considerable number of safety plugs or safety switches, and it is necessary to reduce the occupied space and to ensure the ease of checking the state and operating.
Furthermore, it is conceivable that a large sudden acceleration is applied to the vehicle during traveling due to an external force applied to the vehicle, or due to a composite factor that combines vibration and inertial force accompanying the traveling. When replacing a large safety plug with a relatively small safety switch to improve ease of installation, there is a possibility that a safety switch with high operability may unintentionally switch due to acceleration applied to the safety switch. It is done.
Therefore, it is necessary to consider measures to prevent such switching or to make it easy to confirm the presence or absence of switching.

  This invention makes it possible to prevent unintentional switching of the switch or to confirm the switching state of the switch, to enhance visibility with an easy-to-access arrangement, to prevent inadvertent human operation and to prevent electric shock, It is an object of the present invention to enable an easily accessible arrangement by making it compact and improving layout.

  Accordingly, in order to eliminate the above-described disadvantages, the present invention provides a vehicle high-voltage circuit cutoff device including a safety switch that switches a supply cutoff state of high-voltage power supplied from a power supply. A cover provided with a visual recognition part for confirming the switching selection state of the switches at the respective positions is provided.

As described above in detail, according to the present invention, in the vehicle high-voltage circuit interrupting device having the safety switch for switching the supply cutoff state of the high-voltage power supplied from the power source, each position of the safety switch ON / OFF A cover provided with a visual recognition part for confirming the switching selection state of the switch is provided.
Therefore, it is possible to ensure visibility for checking the state without removing the cover.

FIG. 1 is a front view of the safety switch. (Example) FIG. 2 is a schematic side view of the rear portion of the vehicle showing a layout state of the safety switch. (Example) FIG. 3 is a perspective view of the safety switch. (Example) FIG. 4 is a perspective view of the safety switch with the cover removed. (Example)

  Embodiments of the present invention will be described below in detail with reference to the drawings.

1 to 4 show an embodiment of the present invention.
In FIG. 2, 1 is a vehicle, 2 is a vehicle body, 3 is a left rear wheel, 4 is a floor panel, and 5 is a side panel.
A rear seat 6 is attached to the rear portion of the vehicle body 2 of the vehicle 1, and a vehicle high-voltage circuit interrupting device 7 including a battery unit constituting a high-voltage circuit is mounted on the rear surface of the rear seat 6. A safety switch 8 is disposed on the side of the high voltage circuit breaker 7 for use.
At this time, the vehicle high-voltage circuit interrupting device 7 includes a lower battery 9 and an upper battery 10 located on the upper surface of the lower battery 9. An electrical component 11 such as a converter or a blower fan is disposed on the upper surface of the upper battery 10.
The safety switch 8 switches a supply interruption state of high-voltage power supplied from a power source (not shown).

And the cover 13 provided with the visual recognition part 12 which can confirm the switching selection state of the switch in each position of ON / OFF of the said safety switch 8 is provided.
More specifically, the cover 13 is made of a colorless and transparent resin material having insulating properties.
Therefore, it is possible to ensure the visibility for checking the state without removing the cover 13.
In addition, the cover 13 can cover the safety switch 8, particularly the entire switch lever 14, which will be described later, so that the switch lever 14 can be hermetically sealed, and waterproof and dustproof properties can be improved. .

The cover 13 is provided with a blocking portion 15 for the switching selection locus of the switch lever 14 at a position between ON and OFF.
At this time, the cover 13 entirely covers the atmosphere of the movable range of the switch lever 14.
That is, the cover 13 has a volume space that can be accommodated when the switch lever 14 is selectively switched between the switch ON position and the switch OFF position, and has a step shape such as a staircase here.
When the switch lever 14 is covered with the safety switch 8, the inner wall surface of the stepped-in portion functions as the inhibition portion 15, and the switch lever 14 rotationally inhibits the switching operation. .
Therefore, malfunctions such as an unintended switching operation can be prevented by the inhibition unit 15 for the switching selection locus of the switch lever 14.

Further, the visual recognition part 12 is a transparent window 16, and the inhibition part 15 is formed by a step 17.
That is, the cover 13 uses the visual recognition part 12 as a transparent window 16.
Further, as shown in FIGS. 1 and 3, the inhibition portion 15 is formed by a step 17 formed in the visual recognition portion 12 of the cover 13.
At this time, the step 17 has a shape having two or more different surfaces and ensures visibility.
The vertical wall portion of the step 17 also functions as the window 16 of the visual recognition unit 12.
Accordingly, both prevention of malfunction and ensuring of visibility can be achieved.
In addition, the step 17 is a guide when visually recognizing, and determination from a determination from a distant position becomes easy.

Furthermore, the safety switch 8 is provided so as to be surrounded by the holding frame 18 of the vehicle high-voltage circuit breaker 7 composed of a battery unit constituting a high-voltage circuit, and the cover 13 is provided on the upper surface of the safety switch 8. The safety switch 8 and the cover 13 are provided so as to be visible even when the safety switch 8 and the cover 13 are out of the facing position in the opening 20 of the work lid 19.
Therefore, the safety switch 8 provided integrally with the vehicle high-voltage circuit breaker 7 composed of the battery unit is improved in visibility while increasing the volumetric efficiency by using the surplus space formed by the holding frame 18. It can be secured.
Moreover, the freedom degree of mounting, such as a volume increase and the loading direction of the vehicle high-voltage circuit breaker 7 composed of the battery unit, can be increased.

The working lid 19 is a seat back 21.
Therefore, access becomes easy.

In addition, as shown in FIG. 2, the safety switch 8 is disposed so as to protrude from the side surface of the vehicle high-voltage circuit interrupting device 7 composed of a battery unit constituting the high-voltage circuit. It is mounted in a space sandwiched between the high voltage circuit breaker 7 and the side panel 5 of the rear vehicle body constituting member.
As shown in FIG. 2, the vehicle high-voltage circuit breaker 7 is provided so as to surround the upper and lower and front and rear peripheries by a holding frame 18, the cover 13 is provided on the upper surface of the safety switch 8, and a work lid 19 is provided. The safety switch 8 and the cover 13 are provided so as to be visible even when the safety switch 8 and the cover 13 are removed from the directly facing position of the opening 20.
The vehicle high-voltage circuit breaker 7 is fixed to the vehicle body 2 by the holding frame 18 assembled in a rack shape and fixed to the floor panel 4.
And, inside the holding frame 18, as shown in FIG. 2, a plurality of batteries stacked in the vertical direction, that is, a lower battery 9, an upper battery 10 and an electrical component 11 disposed on the upper surface of the upper battery 10, Configure the unit.
Further, the rear seat 6 includes a seat portion 22 which is a seat surface portion, and the seat back 21 provided to be retractable with respect to the seat portion 22, and the seat back 21 is provided with the vehicle high voltage. A work lid 19 for working on the circuit breaker 7 and the safety switch 8 is configured.
The front surface of the vehicle high-voltage circuit breaker 7 facing the back of the seat back 21 is covered with the cover 13, and the high-voltage lower battery 9 and the upper battery 10 of the vehicle high-voltage circuit breaker 7 It is provided so that the parts constituting the high voltage circuit such as a converter cannot be easily accessed.
For reference, the rear body constituting member is constituted by the floor panel 4 extending substantially horizontally, the side panel 5 on the side thereof, interior trims (not shown) thereof, and the like.

  The present invention is not limited to the above-described embodiments, and various application modifications are possible.

For example, in the embodiment of the present invention, the entire cover is formed to be colorless and transparent with a uniform material, but it may be translucent or colored.
That is, since it is not necessary for the entire cover to be a visual recognition part, a part that is considered unnecessary is formed by being translucent or colored.
If so, the cover can ensure both prevention of malfunction and ensuring visibility.

Moreover, when providing a small window in a cover, what is necessary is just a small window which permeate | transmits visible light, and it can implement | achieve by making a window part the material different from a remaining part, or making a window part missing.
At this time, in the case of the missing small window, a distance is secured so that the finger is not directly touched, or a small hole is formed so that the finger does not enter. Alternatively, a large number of small holes may be provided in a concentrated or dispersed manner to improve visibility.

  Furthermore, it is also possible to employ a configuration in which the switch lever is colored or painted to improve visibility.

  Furthermore, although the upper surface of the cover has a stepped step shape, it may be a curved surface or a complicated three-dimensional shape combined.

  Further, the switch lever has a curved plate shape in the knob portion, but may have any shape.

  Further, the present invention has been described as a vehicle high-voltage circuit breaker, but is not limited to a vehicle, and can be applied to the field of stationary power sources such as a wind power buffer power source and a home night power storage device. It is.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 4 Floor panel 5 Side panel 6 Rear seat 7 Vehicle high voltage circuit breaker 8 Safety switch 9 Lower battery 10 Upper battery 11 Electrical component 12 Visual recognition part 13 Cover 14 Switch lever 15 Inhibition part 16 Window 17 Step 18 Holding Frame 19 Working lid 20 Opening 21 Seat back

Claims (5)

  In a high voltage circuit breaker for a vehicle equipped with a safety switch for switching a supply cutoff state of high-voltage power supplied from a power source, a visual recognition for confirming a switching selection state of a switch at each ON / OFF position of the safety switch A high-voltage circuit breaker for a vehicle, characterized in that a cover having a portion is provided.   The high voltage circuit breaker for a vehicle according to claim 1, wherein the cover is provided with an inhibition portion for a switching selection locus of the switch lever at a position between ON and OFF.   The high voltage circuit breaker for a vehicle according to claim 1 or 2, wherein the visual recognition part is a transparent window and the inhibition part is formed by a step.   The safety switch is provided so as to be surrounded by the holding frame of the battery unit constituting the high voltage circuit, and the cover is provided on the upper surface of the safety switch. 4. The high voltage circuit breaker for a vehicle according to claim 1, wherein the high voltage circuit breaker is provided so as to be visible even if it is detached.   The vehicle high voltage circuit breaker according to claim 4, wherein the working lid is a seat back.

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