JP2002095142A - Battery harness protection structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery harness protection structure which does not bring about rise of assembling cost resulting from a new process and addition of new membranes and increase of noise and can effectively prevent damage of battery harness when a floor panel is deformed. SOLUTION: This battery harness protection structure comprises, a flange 24 which is formed and disposed at an opening FPH in contact with the lower side of circumference of the opening FPH of the floor panel FP of a vehicle, a main body 21 which is disposed at the lower side of the general plane GL of the floor panel FP and provides the battery harness 12b connected to a high voltage battery 1 disposed on the floor panel FP through the lower side of the floor panel FP, and a bracket 2 which is disposed continuously between the flange 24 and main body 21 and is formed of a metal plate including a curved buffer 25 which is provided to be projected upward from the general plane GL of the floor panel FP.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a protection structure for a battery harness.

[0002]

2. Description of the Related Art Conventionally, in order to supply electric power to electric parts such as spark plugs and self-motors for automobiles,
Battery was installed. In consideration of recent environmental and energy issues, instead of gasoline engine vehicles,
Hybrid cars such as the Prius (registered trademark) manufactured by Toyota Motor Corporation or cars equipped with a driving motor such as electric cars (hereinafter referred to as hybrid cars) have been socially demanded. A hybrid car or the like requires a large high-voltage battery capable of supplying a high voltage and a large current in order to drive a driving motor. Since this high-voltage battery is large, it may not be able to be accommodated in the engine room or the lower part of the vehicle. For example, a structure in which the high-voltage battery is accommodated between a cabin floor panel and a seat has been considered. In this case, a battery harness was necessary as a wiring for supplying a high-voltage current from the inside of the cabin to a driving motor or the like, or for collecting electricity generated during braking when the motor was used for regeneration. . Therefore, conventionally, as shown in the diagram showing the wiring structure of the battery harness in FIG.
A flange 124 conforming to the shape of the opening FPH is provided below the periphery of the opening FPH provided at a predetermined position;
The flange portion 124 is disposed on the floor panel FP by a bracket 102 spot-welded and fixed to the floor panel FP so as not to protrude above the general surface of the floor panel FP so as not to protrude above the general surface of the floor panel FP. The high-voltage battery harness 112 connected to the high-voltage battery (not shown) is penetrated below the floor panel FP, and the high-voltage battery harness 112 is supported. This high voltage battery harness 1
In No. 12, no current leaked because the resin coating was applied and insulated.

[0003]

However, there is a case where the floor panel FP is deformed when a vehicle collides. Here, FIG. 8 is a diagram illustrating a state where the floor panel FP is deformed. When the floor panel FP is deformed, the flange portion 124 of the bracket 102 bends at the joint portion W joined by spot welding,
Edge part of floor panel FP (end part without R)
There is a problem that the FPE contacts the high-voltage battery harness 112 and the high-voltage battery harness 112 is cut or its coating is broken, so that current may leak from the high-voltage battery harness 112 to the floor panel FP.

The bracket 102 is mounted on the floor panel F
A method of inserting the bracket 102 from above the P and fixing the upper part of the floor panel FP and the lower part of the bracket 102 by welding or the like is also conceivable. In addition, there is a problem that a new process needs to be added to the conventional process, which causes an increase in assembly cost.

[0005] A metal high-voltage battery harness support cylinder 113 for supporting the high-voltage battery harness 112 is extended upward so that the resin high-voltage battery harness 11 is extended.
Although it is conceivable to protect the resin coating of No. 2, there is a problem that the noise is increased when the high-voltage battery harness support cylinder 113 is extended upward. In addition, these problems had the same problem also in the low voltage battery harness.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention does not cause an increase in assembly cost due to the addition of a new process or the addition of a new member, and does not cause an increase in noise.
An object of the present invention is to provide a battery harness protection structure that effectively prevents damage to a battery harness when a floor panel is deformed.

[0007]

In order to achieve this object, in a battery harness protection structure according to the present invention, an opening provided at a predetermined position on a floor panel of a vehicle is provided so as to cover the opening. A battery harness disposed below the general surface of the floor panel and connected to a battery disposed on the floor panel,
A main body for penetrating the battery harness below the floor panel; a flange formed around the main body so as to be able to abut on a lower side of a periphery of the opening for fixing the main body; And a bracket formed of a metal plate having a shock-absorbing portion which is disposed continuously between the main body and the main body, and which is curved so as to protrude above the general surface of the floor panel. It is characterized by the following.

In the battery harness protection structure according to the present invention, the floor panel is provided by a bracket provided with a buffer portion which is curved and provided so as to protrude above the general surface of the floor panel. Even when deformed, the edge of the floor panel is covered with the buffer, so that the edge of the floor panel does not directly contact the battery harness, and the edge of the floor panel may damage the battery harness. Absent.

Further, in the battery harness protection structure of the present invention, a deformed portion in which stress applied to the bracket is concentrated is provided at a predetermined position between the buffer portion of the bracket and a portion supporting the battery harness. When the bracket receives stress, the bracket is bent at the deformed portion.

[0010] Therefore, when the bracket is bent at a predetermined position by the deformed portion and comes into contact with the battery harness, it can surely hit the buffer portion of the curved bracket.

In the battery harness protection structure according to the present invention, the battery harness protection structure is suitable even when a high-voltage battery having a large effect particularly when a large current leaks due to damage to the battery harness is mounted. Can be.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a protective structure of a battery harness according to the present invention. In the drawings, UP indicates the upper direction, FR indicates the forward direction of the vehicle, and OUT indicates the external direction of the vehicle.

FIG. 1 shows a high-voltage battery 1 housed under a seat cushion SC of a vehicle seat SH.
FIG. 2 is a diagram showing a high-voltage battery harness 12a, 12b, a bracket 2, and the like. A floor panel FP is laid on the floor of the riding cabin of the vehicle. Floor panel FP
It has a structure in which a large number of ribs are provided to increase the strength. A horizontal portion having a height difference by combining a large number of flat portions elongated in the vehicle front-rear direction and a slope portion connecting them are provided, and are formed in a corrugated plate shape as a whole. This floor panel F
In this embodiment, three rows of riding seats are provided on P, and the seat SH shown in FIG. 1 is a third row seat.
The seat SH is fixed on the floor panel FP by a frame and a seat leg not shown. The high-voltage battery 1 is accommodated below the seat cushion SC of the seat SH.

The high-voltage battery 1 is a power supply that supplies a large current at a high voltage of, for example, 125 V to a motor for driving a vehicle (not shown). From the high-voltage battery 1, two high-voltage battery harnesses 12a and 12b are provided.
The book harness has been pulled out. Also, a seat leg cover SL below the seat cushion SC of the seat SH.
The floor panel FP in the portion covered with C has an opening FP
H is provided. This high voltage battery harness 12
The wires a and 12b are supported by the bracket 2 provided in the opening FPH, and penetrated below the floor panel FP to be wired. A low-voltage battery (not shown) having a power supply voltage of about 12 V is housed in a side panel in front of a rear wheel beside the seat SH, and a low-voltage battery harness 5 from this low-voltage battery is removed from the bracket 2. Wired below the floor panel FP (see FIG. 2).

FIG. 2 is a diagram showing a cross section of the sheet SH and the floor panel FP in the AA section of FIG. The high-voltage battery 1 in the seat leg cover SLC is fixed to the floor panel FP by the high-voltage battery leg 11. The high-voltage battery harnesses 12a and 12b drawn out of the high-voltage battery 1 are wired below the floor panel FP through the bracket 2 disposed in the opening FPH of the floor panel FP and the boot 3 disposed under the bracket 2. . The bracket 2 is fixed to a lower portion of the floor panel FP by spot welding. In addition, the flange part 24a shown by the two-dot chain line shows a cross section taken along the line CC in FIG. 1, the stay 26 is fixed to the reinforcing panel RP by a reinforcing panel fixing screw 27.

FIG. 3 is a perspective view of the bracket 2. The bracket 2 is a member formed by pressing an iron plate.
The main body 21 has a substantially elliptical horizontal plane. A wall portion 28 is formed in a wall shape substantially upward from the peripheral portion of the main body portion 21. Further, a flange portion 24 is formed substantially horizontally around the periphery of the wall surface portion 28. Flange 24
Is formed in accordance with the shape of the end of the opening FPH (see FIG. 1) of the floor panel FP, so that it can contact the lower edge of the periphery of the opening FPH without any gap. Further, between the flange portion 24 on the front side of the vehicle and the main body portion 21, buffer portions 25a, 25b, 25c, 25d, and 25e are arranged continuously from the flange portion 24 and the main body portion 21. It is provided to be curved so as to protrude above the surface.

At the center of the main body 21, a rear corner is
And a communication hole 22 having a substantially square shape in which a left half of the front fifth is cut out in a rectangular shape. In the vicinity of the front left side of the communication hole 22, an equilateral triangular high-voltage battery harness support plate 14 having a substantially rounded corner is drilled near one apex by a high-voltage battery harness support plate fixing screw 15. It is screwed and fixed to the main body 21 by the formed hole. The high-voltage battery harness support plate 14 is arranged to cover a part of the communication hole 22. A hole is formed in the vicinity of the other apex of the high-voltage battery harness support plate 14, and a high-voltage battery harness support cylinder 13a, which is a metal cylindrical member, is formed in the hole on the right side of the vehicle.
Are disposed substantially vertically, and a high-voltage battery harness support cylinder 13b is similarly disposed in a hole on the left side of the vehicle. The high-voltage battery harness 12a is pierced through the high-voltage battery harness support tube 13a, and the high-voltage battery harness 12b is pierced through the high-voltage battery harness support tube 13b.

At the center on the rear side of the flange portion 24, a stay 26 extends substantially downward, and further has a front end portion formed horizontally on the rear side. A hole is formed in the center of the horizontally formed part, and the reinforcing panel R
P (see FIG. 2). The flange 24 is shown in FIG.
Opening F of floor panel FP at the position indicated by x
The PH (see FIG. 1) is fixed by spot welding to a lower portion of the peripheral portion.

At the right front portion of the bracket 2, a bent portion 29 is provided.
a is provided with a bent portion 29b at the left front portion. The bent portion 29a is separated from the flange portion 24 by the buffer portion 25a.
The concave portion having a semicircular cross section provided over the bent portion 29b
Is a concave portion having the same semicircular cross section provided from the buffer portion 25 e to the wall surface portion 28. Bent portions 29a, 29b
And the front end side of the high-voltage battery harness support plate 14 has a positional relationship arranged on a straight line D in the vehicle lateral direction. The bent portions 29a and 29b have a shape provided so that stress from the front portion at the time of a collision is concentrated, and a break occurs at the position of the straight line D at the time of a collision. The bracket 2 is bent at the position of the straight line D, so that the high-voltage battery harnesses 12a and 12b have the R
Buffer portion 25 surely hits it. Therefore, the high-voltage battery harnesses 12a and 12b are provided with the edge portions F of the floor panel FP, which are the ends without the R.
PE does not hit and damage the insulating coating.

A boot 3 is disposed below the main body 21 and is fixed by boot fixing screws 33a and 33b. The low-voltage battery harness 5 penetrates into the communication hole 22 of the main body 21 without a supporting member such as the high-voltage battery harness support plate 14 and is wired from the low-voltage battery harness communication hole 35 of the boot 3 to below the floor panel FP. You.

FIG. 4 is a sectional view of the bracket 2 as viewed along the line BB in FIG. 3 and a diagram showing the relationship between the bracket 2 and the floor panel FP and the like. Here, in the present application, the general surface GL of the floor panel FP refers to a surface having the same height as the vertical height of a portion occupying most of the entire floor panel FP. In other words, it means a surface having a height when there is no opening in the opening. That is, the floor panel FP has a height difference due to the ribs provided, but the general surface GL also changes according to the height difference. The bracket 2 is disposed in the opening FPH of the floor panel FP as described above, and the flange 24 is spot-welded to the lower side of the floor panel FP at the position of the point W. In addition, the flange part 2 shown by the two-dot chain line in FIG.
4a shows a cross section taken along the line CC shown in FIG. 3. In the line BB shown in FIG. 3, a stay 26 indicated by a solid line is shown.
Extends substantially horizontally rearward from the main body 21 and is fixed to the vehicle reinforcing panel RP as shown in FIG. Buffer 25
Is formed continuously from the flange portion 24 and the main body portion 21 via the wall surface portion 28, and is provided so as to be curved so as to protrude above the general surface GL of the floor panel FP.

The boot 3 is arranged below the bracket 2. The boot 3 is disposed below the main body 21 which is substantially elliptical in a plan view so as to cover the main body 21, and the positions of the high-voltage battery harnesses 12a and 12b and the low-voltage battery harness 5 near the center (see FIG. 3)
A pipe-shaped harness seal portion 32 is provided in a funnel shape. In FIG. 4, the low-voltage battery harness 5
Are not shown. The upper portion of the harness seal portion 32 has a bellows shape, and the high-voltage battery harness 12a, 1
2b, formed so as to adhere to the low-voltage battery harness 5 with a high pressure at a portion having a narrow cross-sectional area, and the lower portion has a shape so as to be in close contact with the whole to prevent water from entering from the lower portion. Further, since the resin-made pipe-shaped protection cover 4 is provided around the harness seal portion 32, the high-voltage battery harness 12b is not damaged by ordinary interference from the outside.

An upper portion is formed with a horizontal flange-like portion toward the outside, and bracket seal portions 31a and 31b as annular projections are provided in parallel on the upper portion thereof.
The bracket 2 is formed so as to be in close contact with the lower side of the main body 21. In addition, a metal boot reinforcing member 34 is provided on the upper flange-shaped portion of the boot 3 so as to cover the flange-shaped portion.
To prevent the upper part of the boot 3 from being deformed. Further, the boot reinforcing member 34 is provided with a boot fixing screw 33a,
33b (see FIG. 3), and is screwed to the main body 21.
The bracket seal portions 31a and 31b are pressed against the lower portion of the main body portion 21 to prevent water from entering.

The upper part of the boot 3 has a hollow inside, and is a metal high-voltage battery which is held by the high-voltage battery harness support plate 14 and has a metal cylindrical shape having an inner diameter equal to the outer diameter of the high-voltage battery harness 12b. The harness support cylinder 13b is disposed vertically. The high-voltage battery harness 12 is attached to the high-voltage battery harness support cylinder 13b.
b is penetrated and held. The lower end of the high-voltage battery harness support cylinder 13 b is arranged so as to communicate with the harness seal 32 of the boot 3. Since the high-voltage battery harness support cylinder 13b is made of a metal member, noise such as hum is likely to be generated by a current passing through the high-voltage battery harness 12b. Therefore, in order to protect the high-voltage battery harness 12b, the high-voltage battery harness support cylinder 13b cannot be extended upward. The high-voltage battery harness 12b and the high-voltage battery harness support cylinder 13b have been described as examples, but the same applies to the high-voltage battery harness 12a and the high-voltage battery harness support cylinder 13a.

The protection structure of the battery harness according to the present embodiment has the following operation since it is configured as described above. Here, FIG. 5 is a diagram schematically illustrating the protection structure of the battery harness according to the present embodiment. The rear side of the floor panel FP is fixed to a reinforcing panel RP of the vehicle by stays 26 (see FIG. 2).
Since there are structures such as a seat leg (not shown) and a high-voltage battery leg 11 (see FIG. 2) above, the rear floor panel FP is not easily deformed. On the other hand, the position where the battery harness protection structure of the present embodiment is provided is weakened in strength because of the presence of the opening FPH. Therefore, when the vehicle collides from the front, the opening FPH is easily deformed. FIG. 6 shows the floor panel F
It is a figure showing the state when P is deformed. When a large stress is transmitted from the front of the vehicle, such as at the time of a vehicle collision, the opening FPH of the floor panel FP is easily deformed as described above, but the bent portions 29a and 29b, which are deformed portions, are provided. Therefore, stress is concentrated here and breakage occurs at the position of the straight line D. The bracket 2 is bent at the position of the straight line D, so that the buffer portion 25 of the bracket 2 with the R attached thereto reliably hits the high-voltage battery harnesses 12a and 12b.

At this time, since the buffer portion 25 is also bent, stress tends to concentrate on the buffer portion 25 as well.
Is bent and deformed so as to surround the edge portion FEP. In this case, the edge portion FPE of the floor panel FP
Is deformed so as to bite into the buffer portion 25 without separating from the flange portion 24, so that the edge portion FPE is not exposed and does not directly touch the high-voltage battery harness 12b. Further, since the buffer portion 25 comes into contact with the high-voltage battery harness 12b in a state where R is attached, it is difficult to damage the insulating coating of the high-voltage battery harness 12b. Therefore, current does not leak from the high-voltage battery harness 12b to the floor panel FP. The above-described operation is the same in the high-voltage battery harness 12a. Further, also in the low-voltage battery harness 5, the edge portion FPE of the floor panel FP is similarly covered by the buffer portion 25, so that the insulating coating is hardly damaged.

As described above, in the battery harness protection structure of the present embodiment, the bracket 2 provided with the buffer portion 25 which is curved and provided so as to protrude above the general surface GL of the floor panel FP. Even if the floor panel FP is deformed due to a vehicle collision or the like, the bracket 2 is bent at the position of the straight line D by the bent portions 29a and 29b, and the high-voltage battery harness 12a, 1
2b, the buffer 2 of the bracket 2 with an R
5, the edge portion FPE of the floor panel FP is covered with the buffer portion 25, and the portion of the buffer portion 25 with R is the high-voltage battery harness 1
2a and 12b, which are in contact with the low-voltage battery harness 5, have the effect of making it difficult to damage the battery harness even when the floor panel FP is deformed. In particular, there is no need to extend the length of the high-voltage battery harness support cylinders 13a and 13b, so that there is an effect that noise does not increase. In addition, there is an effect that damage to the high-voltage battery harnesses 12a and 12b and the low-voltage battery harness 5 can be prevented at low cost without adding new members and without increasing a new production process.

Although the present invention has been described with reference to one embodiment, it goes without saying that the present invention is not limited to this embodiment. For example, the size and position of the high-voltage battery 1 and the position, size, shape, and the like of the opening FPH can be appropriately changed depending on the vehicle. Further, the buffer portion 25 is not limited to a configuration formed only on the front side, and may be formed on the entire periphery. The shape of the buffer 25 is not limited to the cross section shown in FIG. 4 and may be various shapes. Further, floor panel FP and the bracket are fixed by spot welding in the present embodiment, but may be fixed with screws or the like. Further, the bent portions 29a and 29b only need to have a structure in which stress is concentrated, and in addition to the concave portions, the shape, number, and location of the convex portions and the cutout portions can be variously changed. In addition, various modifications and improvements can be made by those skilled in the art without departing from the scope of the claims.

[0029]

As is apparent from the above description, the present invention does not cause an increase in assembly cost, does not cause an increase in noise, and does not add a new member. There is an effect that damage can be effectively prevented.

[Brief description of the drawings]

FIG. 1 is a diagram showing a high-voltage battery 1 housed under a seat cushion SC of a vehicle seat SH, high-voltage battery harnesses 12a and 12b, a bracket 2, and the like.

FIG. 2 is a diagram showing a cross section of a sheet SH and a floor panel FP in a portion AA in FIG. 1;

FIG. 3 is a perspective view of a bracket 2. FIG.

FIG. 4 is a bracket 2 viewed from a line BB in FIG. 3;
And a diagram showing a relationship between the bracket 2 and a floor panel FP and the like.

FIG. 5 is a simplified view showing a battery harness protection structure according to the present embodiment.

FIG. 6 is a diagram illustrating a state where the floor panel FP is deformed.

FIG. 7 is a diagram showing a wiring structure of a conventional battery harness.

FIG. 8 is a diagram showing a state where a conventional floor panel FP is deformed.

[Explanation of symbols]

1 high voltage battery, 12a, 12b high voltage battery harness, 13a, 13b high voltage battery harness support cylinder a, 14 high voltage battery harness support plate
2 ... bracket, 21 ... body part, 22 ... communication hole, 24 ...
Flanges, 25, 25a, 25b, 25c, 25d ...
Buffer part, 28 ... wall part, FP ... floor panel, FPH ...
Opening, GL: General surface

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H01B 7/00 301 B60K 9/00 ZHVE

Claims (2)

[Claims] 1. An opening provided at a predetermined position on a floor panel of a vehicle, and connected to a battery disposed below a general surface of the floor panel so as to cover the opening and connected to a battery disposed on the floor panel. A main body for supporting the battery harness and penetrating the battery harness below the floor panel, and formed around the main body so as to be able to abut on a lower peripheral edge of the opening to fix the main body. The flange portion, and is disposed continuously between the flange portion and the main body portion,
A battery harness protection structure, comprising: a bracket formed of a metal plate having a buffer portion curved and provided so as to protrude above a general surface of the floor panel. 2. A predetermined position between the buffer portion of the bracket and a portion supporting the battery harness,
Providing a deformed portion where the stress applied to the bracket is concentrated,
The battery harness protection structure according to claim 1, wherein the bracket is bent at the deformed portion when the bracket is stressed.