JP7191463B2 - Wire harness reinforcement structure - Google Patents

Description

The present invention relates to a vehicle body of a vehicle such as an automobile, particularly to a wire harness reinforcing structure in an engine compartment.

Conventionally, in electric vehicles and hybrid vehicles, a motor for driving the vehicle, a PCU (Power Control Unit) that operates at a high voltage corresponding to the motor, and a unit that operates at a high voltage (hereinafter referred to as a high voltage unit) are used. A wire harness with a high withstand voltage (hereinafter referred to as a high-voltage harness) is used for connection, and the high-voltage harness is routed between the engine compartment of the vehicle in which the PCU is installed and the battery on the vehicle body side.

The high-voltage harness may be broken or short-circuited when the high-voltage unit moves or swings in the engine compartment due to an external force caused by a vehicle frontal collision or the like. As a technique for preventing such a fear, Patent Document 1 discloses that a high-pressure harness connected to a high-pressure unit arranged in the engine compartment is routed along a dash panel forming the inner wall of the engine compartment. , discloses a technique in which a portion wired to a wall surface and a connection portion with a high-voltage unit are arranged substantially parallel to each other so that the space between the dash panel and the voltage unit is deformed into a U-shape.

According to this, even when the high-voltage unit is moved to the rear of the vehicle, the cables of the same polarity can easily come into contact with each other, thereby preventing disconnection and short-circuiting of the wire harness.

JP 2011-240799 A

However, the conventional techniques described above have the following problems. That is, the above-described prior art is based on the assumption that the high-voltage harness and the high-voltage unit will interfere with each other due to an external force, and cannot be said to sufficiently prevent disconnection or short-circuiting of the wire harness.

As a solution to such a problem, it is conceivable to secure a sufficient distance between the wiring position of the high-voltage harness and the arrangement position of the high-voltage unit, considering the amount of movement of the high-voltage unit in the event of a frontal collision. However, it was not very versatile because it was limited by factors such as the volume of the vehicle body.

The present invention has been made in view of the above problems, and reduces the risk of interference with electrical components such as a wire harness and a high-voltage unit routed inside the vehicle body, and eventually disconnection of the wire harness. An object of the present invention is to provide a wire harness reinforcement structure capable of preventing a short circuit.

In order to achieve the above object, an aspect of the present invention sandwiches a wire harness routed along the panel surface of a vehicle body and is provided at a position facing the electrical equipment to which the wire harness is connected. A reinforcement having at least a pair of ridges is provided, the pair of ridges has greater rigidity than the panel, the height of the pair of ridges is greater than the outer diameter of the wire harness, and the pair of ridges One of the ridges extends linearly along the vehicle height direction, and the other of the pair extends obliquely and curves in a direction approaching the one in the middle extending downward from above. , wire harness reinforcement structure.

In addition, as another aspect of the present invention, the wire harness may be curved on a region sandwiched between the ridges.

Furthermore, as another aspect of the present invention, the contour of the ridge adjacent to the wire harness may be curved so as to bend the wire harness.

Advantageous Effects of Invention The present invention as described above has the effect of reducing the risk of interference between the wire harness and electrical components routed inside the vehicle body, and thus making it possible to prevent disconnection and short-circuiting of the wire harness. .

1 is a perspective view showing an internal configuration of a vehicle including a wire harness reinforcing structure according to an embodiment of the present invention; 1 is a front view showing the configuration of a wire harness reinforcing structure according to an embodiment of the present invention; Cross-sectional view along line A-A in FIG. FIG. 3 is a diagram for explaining the effects of the wire harness reinforcement structure according to the embodiment of the present invention; FIG. 2 is a front view showing the configuration of a wire harness reinforcing structure according to another embodiment of the present invention; FIG. 2 is a front view showing the configuration of a wire harness reinforcing structure according to another embodiment of the present invention;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view schematically showing the configuration inside an engine compartment, which is the inside of a vehicle body in which a wire harness reinforcing structure according to an embodiment of the present invention is arranged, and FIG. FIG. 3 is a front view showing the configuration of a reinforcement 1, which is a reinforcing structure of the wire harness of the embodiment, and its vicinity, and FIG. 3 is a cross-sectional view taken along line AA in FIG. In the following description, the longitudinal axis, the vertical axis, and the horizontal axis are orthogonal to each other as indicated by the orthogonal coordinates shown in FIGS. The front-rear, up-down, and left-right directions of the structure are defined to correspond to the vehicle length direction, vehicle height direction, and vehicle width direction, respectively. The following description will also be made with reference to the coordinates in the drawing as appropriate.

As shown in each figure, the engine compartment of the vehicle is an internal space formed forward by being partitioned from the vehicle interior by a dash panel 30 extending in the vehicle height direction and the vehicle width direction. A dash panel 30 is a steel member forming the back wall of the engine compartment.

A reinforcement 1 is provided on the front surface of the dash panel 30 and fixed to the dash panel 30 by welding, crimping, screwing, or any other known and commonly used technical means. The reinforcement 1 includes a body portion 10 having a substantially rectangular planar shape, and a pair of ridges 10a and 10b formed by projecting forward in the vehicle length direction from the surface of the body portion 10 and extending vertically in the vehicle height direction. as a main configuration.

The main body 10 is made of a steel plate cut into a predetermined shape. The pair of ridges 10a and 10b are portions formed as beads by providing unevenness on the front and back surfaces of the main body 10 by, for example, pressing. The upper base side corresponding to the side is located forward. As a result, in the reinforcement 1, at least the pair of ridges 10a and 10b are provided with greater rigidity than the dash panel 30. As shown in FIG. The rigidity of the pair of ridges 10a and 10b may be greater than the rigidity of the dash panel 30 based on the rigidity of the material of the main body 10 in addition to the shape.

The ridge 10a extends linearly along the vehicle height direction, while the ridge 10b runs obliquely in a direction approaching the ridge 10a via an oblique portion C in the middle of extending downward from above. It is curved, and the distance between the ridges 10a and 10b at the lower end of the main body 10 is smaller than the distance at the upper end of the main body 10. As shown in FIG.

Further, the area sandwiched between the pair of ridges 10a and 10b forms a gap 10x indicated by a broken line in the figure, which is open in the vertical direction as shown in FIG. A high-voltage harness 20 extending in the vertical direction is routed. The high-voltage harness 20 is fixed to the surface of the main body 10 in a curved manner within the gap 10x along the contour of the ridge 10b on the side facing the ridge 10a.

Further, as shown in FIG. 1, one end of the high-voltage harness 20 extends downward from above the reinforcement 1 and bends forward as indicated by an arrow D1, and the PCU 40 is disposed facing the reinforcement 1. connected to The other end of the high-voltage harness 20 extends upward from the reinforcement 1 and bends rearward as indicated by an arrow D2, and further extends to the rear compartment side via the dash panel 30. , are connected to a battery (not shown). As shown in FIG. 3, the high-voltage harness 20 has two cables 22 housed in the sleeve 21, which is an exterior. , or may include a single cable or three or more cables.

Furthermore, as shown in FIG. 3 , the height of the trapezoidal shape of the pair of ridges 10 a and 10 b from the surface of the main body 10 is greater than the outer diameter of the high-voltage harness 20 . Therefore, in the wired state, the high-voltage harness 20 is positioned so that its surface is retreated along the vehicle length direction from the surfaces of the pair of ridges 10a and 10b.

In the above configuration, the reinforcement 1 corresponds to the reinforcement of the present invention, and the dash panel 30 corresponds to the panel of the vehicle of the present invention. Also, the high-voltage harness 20 corresponds to the wire harness of the present invention, and the pair of ridges 10a and 10b correspond to the pair of ridges of the present invention.

The wire harness reinforcement structure according to the embodiment of the present invention having such a configuration includes the reinforcement 1 arranged so as to sandwich the high-voltage harness 20 between the pair of ridges 10a and 10b. 4, when the PCU 40 moves rearward in the vehicle length direction due to an external force due to a frontal collision or the like, the pair of ridges 10a and 10b are brought into contact with the PCU 40 first. ing. Thereby, the stress applied through the PCU 40 is absorbed by the pair of ridges 10 a and 10 b of the reinforcement 1 and the main body 10 .

Furthermore, even if the stress applied via the PCU 40 is greater, the pair of ridges 10a and 10b in the reinforcement 1 have greater rigidity than the dash panel 30, so that the stress is applied to the pair surrounding the high-voltage harness 20. The energy is absorbed by the dash panel 30 or converted into energy that deforms the dash panel 30 without deforming the ridges 10a and 10b.

Therefore, the stress caused by the PCU 40 is prevented from directly reaching the high-voltage harness 20, and contact or interference with the PCU 40, which causes disconnection or short-circuiting of the wire harness of the high-voltage harness 20, can be reduced. Become.

Furthermore, according to the wire harness reinforcing structure of the embodiment of the present invention, in the reinforcement 1, the high-voltage harness 20 is bent within the gap 10x surrounded by the pair of ridges 10a and 10b. By being fixed to the surface of the main body portion 10 with , the following effects can be obtained. That is, when an external force is applied obliquely or laterally to the vehicle and the PCU 40 moves in a direction that intersects the dash panel 30, the high voltage harness 20 is shown by a white arrow S in FIG. Thus, the PCU 40 is pulled from below by the stress directed to the left and right in the vehicle width direction caused by the movement of the PCU 40 . At this time, the bending portion of the high-voltage harness 20 in the space 10x expands, thereby absorbing the stress and reducing the possibility that the high-voltage harness 20 will be pulled by the PCU 40 and cause an internal disconnection.

As described above, according to the wire harness reinforcement structure of the embodiment of the present invention, it is possible to reduce the risk of interference between the wire harness routed inside the vehicle and the electrical components such as the high-voltage unit. It becomes possible to prevent disconnection and short circuit of the harness.

However, the invention is not limited to the above embodiments. In the above description, the reinforcement 1 is composed of the flat plate-like body portion 10 and the pair of ridges 10a and 10b formed by deforming the body portion 10, but the reinforcement of the present invention includes at least one pair , and is not limited by any other specific configuration. Therefore, as shown in the reinforcement 2 in the configuration example of FIG. There may be. In this case, it is preferable that the height of the ridge is larger than the outer diameter of the high-voltage harness 20 with reference to the height from the surface of the dash panel 30 . Moreover, the ridges of the present invention may be composed of a combination of three or more ridges.

Furthermore, in the above configuration, the high-voltage harness 20 is fixed to the surface of the main body 10 in a curved manner within the gap 10x along the contour of the ridge 10b on the side facing the ridge 10a. However, in the wire harness reinforcement structure of the present invention, the wire harness only needs to be bent while being sandwiched between at least a pair of ridges. It is not limited. Therefore, as shown in the reinforcement 3 in the structural example of FIG. 6, it may be implemented as a pair of ridges 10a and 10c linearly extending in the vertical direction of the vehicle. However, having a curved aspect like the ridge 10b of the reinforcement 1 shown in FIGS. and is more suitable.

Furthermore, in the above description, the PCU 40 and the high-voltage harness 20 arranged in the engine compartment formed by the dash panel 30 located in front of the vehicle body were taken as an example, but the wire harness reinforcement structure of the present invention is applicable to the vehicle. It is not limited to the specific purpose, application, function, etc. of the vehicle parts, as long as it is composed of the parts such as the panel, electrical equipment, and wire harness, and it can be implemented at the rear, side, or any other part of the vehicle. good.

INDUSTRIAL APPLICABILITY As described above, the present invention provides a wire harness reinforcing structure in which a wire harness routed along a panel surface of a vehicle body is sandwiched between positions facing electrical equipment to which the wire harness is connected. a reinforcement having at least a pair of ridges provided in the wire harness, the pair of ridges having greater rigidity than the panel, and the height of the pair of ridges being greater than the outer diameter of the wire harness , one of the pair of ridges extends linearly along the vehicle height direction, and the other of the pair of ridges extends obliquely in a direction approaching the one in the middle extending downward from above. It is not limited by any other specific purpose, application, or configuration.

Therefore, the present invention may be practiced by adding various modifications to the above-described embodiment, including those described above, without departing from the gist of the present invention.

As described above, the present invention can reduce the possibility of interference between the wire harness routed inside the vehicle and electrical components such as the high-voltage unit, and furthermore, it is possible to prevent disconnection and short-circuiting of the wire harness. For example, it is useful in application to EVs and hybrid vehicles.

1, 2, 3 Reinforcement 10 Main body 10a, 10b, 10c Projection 10x Gap 20 High voltage harness 21 Sleeve 22 Cable 30 Dash panel 40 PCU

Claims (1)

A reinforcement having at least a pair of ridges sandwiching a wire harness routed along the panel surface of the vehicle body and provided at a position facing the electrical equipment to which the wire harness is connected,
The pair of ridges has greater rigidity than the panel,
The height of the pair of ridges is greater than the outer diameter of the wire harness,
one of the pair of ridges extends linearly along the vehicle height direction;
The other of the pair is curved obliquely in a direction approaching the one in the middle extending downward from above,
Wire harness reinforcement structure.

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