JP6610378B2 - Wiring protection structure for vehicles - Google Patents

Description

  The present invention relates to a wiring protection structure that prevents damage to wiring in the event of a vehicle collision.

  An electric vehicle that uses electric power for driving includes a power drive control device (power drive unit) that supplies electric power to a drive motor or controls electric power. In a hybrid vehicle, a power drive unit is sometimes installed together with an internal combustion engine such as a gasoline engine in a so-called engine room in front of the passenger compartment.

  The power drive unit is covered with a relatively strong casing so as not to be easily damaged by the force received from the outside. Usually, a housing has a lid member fastened to a housing portion of the housing with a bolt to seal the inside.

  Many of the vehicles have a wide structure for securing a passenger compartment space by deforming the engine room at the time of a collision to absorb the collision energy.

JP 2010-31513 A JP 2009-109003 A Japanese Utility Model Publication No. 63-55719 Japanese Patent No. 5704142 Japanese Patent Laying-Open No. 2015-133803

  The power drive unit is equipped with a bolt fastening part that bolts the housing storage part and lid member on the outside of the housing, and the power drive unit is made smaller and lighter by thinning the area around the bolt fastening part. ing. For this reason, the bolt fastening part protrudes outward compared to its surroundings, and when the vehicle collides, the wiring and piping provided between the power drive unit and the partition in front of the passenger compartment are pressed against the bolt fastening part. There is a risk of damage due to damage.

  An object of the present invention is to provide a wiring protection structure in which a power drive control device such as a power drive unit does not damage wiring in the event of a vehicle collision.

  In order to solve the above-described problems, the present invention has a vehicle wiring protection structure configured as follows. A power drive control device that is arranged in front of the partition wall provided in the front part of the passenger compartment with wirings between the partition walls and a cover that covers the periphery of the power drive control device and is assembled to the storage unit and the storage unit A housing having a member, a fastening portion that is provided on an outer surface of the housing and fastens a fastening member that fixes the lid member to the storage portion, and the fastening portion has a width direction front and rear with respect to the front-rear direction of the vehicle And a protective plate that is attached to be inclined to form a wiring protection structure for a vehicle.

  The vehicle wiring protection structure according to the present invention has the following effects. When the vehicle collides, the protection plate can prevent the wirings from moving in either the left or right direction of the vehicle and being pressed or caught by the fastening portion. As a result, even if the engine room is deformed due to a vehicle collision, the wiring is not sandwiched between the fastening part and the partition wall, and the wiring is not pulled by the wiring part being caught by the fastening part. Damage to the wiring by the part is prevented.

The top view which shows the front part of a vehicle. The side view which shows the wiring protection structure of one Embodiment concerning this invention. The partial side view which shows the same wiring protection structure. The top view which shows a protective plate and a power drive unit. The perspective view which shows a protection board. The perspective view which shows the protection board of another example. The perspective view which shows the protection board of another example.

  A vehicle wiring protection structure according to an embodiment of the present invention will be described. FIG. 1 is a diagram showing an engine room 16 of the vehicle 10 from above. The vehicle 10 is a so-called hybrid vehicle and includes an internal combustion engine and a driving motor for traveling. Hereinafter, the wiring protection structure for a vehicle will be described with the forward direction of the vehicle 10 as the front, the opposite direction as the rear, the left and right determined based on them, the direction of gravity as the lower, and the opposite as the upper.

  The engine room 16 is provided with a gasoline engine 32 that is an internal combustion engine, a power drive unit 34 that is a power drive control device, a front motor, a generator, and the like. A fuel pipe extending to the gasoline engine 32 is provided in the engine room 16. The engine room 16 is separated from the passenger compartment of the vehicle 10 by a partition wall 30.

  The power drive unit 34 manages a system of the vehicle 10, mainly a 12V system control unit, a drive unit that converts the DC high voltage power of the main battery into AC power, and drives the front motor, or an external power source And a charging unit that converts the power generated by the generator and charges the main battery.

  FIG. 2 shows a side surface of the power drive unit 34. The outer periphery of the power drive unit 34 is covered with a housing 40. The housing 40 is generally a rectangular parallelepiped, and includes a storage portion 42 and a lid member 44 that is assembled to the storage portion 42. The housing 40 is entirely formed by casting with an aluminum alloy, for example.

  The storage unit 42 is a storage container having a wall 43 having a predetermined thickness around the opening and having an open top. The housing portion 42 is provided with a female screw portion 52 that forms one of the bolt fastening portions 50. The inside of the storage unit 42 is formed so as to fit the size of the drive unit and the control unit and store them without waste.

  The storage part 42 is designed to reduce the size and weight of the power drive unit by thinning the part other than the periphery of the bolt fastening part 50. Therefore, the female screw portion 52 is formed in a shape protruding a predetermined amount outward from the outer surface a of the storage portion 42.

  The lid member 44 is formed in a shape corresponding to the storage portion 42 and overlaid on the upper surface of the storage portion 42. As shown in FIG. 3, a bolt penetration portion 56 that forms the other side of the bolt fastening portion 50 is provided at the lower edge of the lid member 44. A connector 62 to which a high voltage cable or the like is connected is provided on the rear surface of the lid member 44.

  As shown in FIG. 4, the bolt fastening portion 50 is provided at a substantially middle position between the four corners of the power drive unit 34 and the long side wall of the four side walls. The position and number of the bolt fastening portions 50 are not limited to this.

  A protection plate 70 is attached to the bolt fastening portion 50 provided in the right corner at the rear of the power drive unit 34. FIG. 5 shows the protective plate 70. FIG. 5 is a perspective view showing the protective plate 70 obliquely from above.

  As shown in FIG. 5, the protection plate 70 includes a mounting piece 72, a first vertical plate 74, a second vertical plate 76, and a third vertical plate 78. The attachment piece 72 is connected to the lower end of the second vertical plate 76 at a substantially right angle with the second vertical plate 76. The first vertical plate 74 and the second vertical plate 76, and the second vertical plate 76 and the third vertical plate 78 are connected to each other at substantially right angles.

  The mounting piece 72 is provided with a bolt hole 80 through which a shaft portion of a bolt 60 as a fastening member passes. The intersection of the first vertical plate 74 and the second vertical plate 76 and the intersection of the second vertical plate 76 and the third vertical plate 78 are formed in an arc shape. The upper ends of the first vertical plate 74, the second vertical plate 76, and the third vertical plate 78 are curved in an arc shape toward the inside of the protective plate 70, respectively.

  The protection plate 70 is attached to the upper part of the bolt fastening portion 50 with a bolt 60 that passes through the bolt hole 80. As shown in FIG. 4, the attachment piece 72 is attached such that the second vertical plate 76 has an inclination of approximately 30 degrees with respect to the rear wall surface d of the power drive unit 34. When the mounting piece 72 is attached to the bolt fastening portion 50, the front end of the first vertical plate 74 is close to the rear wall surface d of the power drive unit 34 and the front end of the third vertical plate 78 is the power drive unit 34. It is close to the right wall f.

  Next, the operation and effects of the wiring protection structure in the vehicle 10 will be described.

  Assume that the vehicle 10 collides with another vehicle or an obstacle from the front. The engine room 16 of the vehicle 10 is deformed by the collision energy and compressed in the front-rear direction. The collision energy is absorbed by the compression deformation of the engine room 16.

  Further, due to the compression deformation of the engine room 16, the side member and the radiator provided at the front portion of the vehicle 10 move to the rear of the vehicle 10, so that the power drive unit 34 is pressed backward by these. Since the housing 40 is firmly formed, the power drive unit 34 moves rearward while maintaining its shape without being substantially damaged.

  Between the power drive unit 34 and the partition wall 30, as shown in FIG. 4, high voltage wiring 64 connected to the power drive unit 34, piping such as a brake pipe and a fuel pipe 66 (hereinafter collectively referred to as “wiring”). Is also provided). On the other hand, a protective plate 70 fixed to the bolt fastening portion 50 is attached to the power drive unit 34.

  For this reason, the high voltage wiring 64 and the fuel pipe 66 come into contact with the protection plate 70 by the retreat of the power drive unit 34. The protection plate 70 changes depending on the situation of the collision of the vehicle 10, but wirings positioned substantially behind the protection plate 70 come into contact with the protection plate 70. Since the second vertical plate 76 is inclined at a predetermined angle (30 degrees) with respect to the rear wall surface d of the power drive unit 34, the wirings contacting the second vertical plate 76 have power along the second vertical plate 76. It is moved outside the drive unit 34.

  Accordingly, since the wirings are moved to the outside of the power drive unit 34 by the protective plate 70, even if the power drive unit 34 contacts the partition wall 30 due to a vehicle collision, the wirings are connected to the power drive unit 34, particularly the bolt fastening portion 50. Without being sandwiched between the partition walls 30, it is possible to effectively prevent the wiring from being damaged by the bolt fastening portions 50.

  Further, the wirings that are in contact with the first vertical plate 74 follow the first vertical plate 74 because the first vertical plate 74 is inclined at a predetermined angle (60 degrees) with respect to the rear wall surface d of the power drive unit 34. To the inside of the power drive unit 34. When the power drive unit 34 comes into contact with the partition wall 30, the protective plate 70 and the bolt fastening portion 50 projecting outward from the outer surface a of the storage portion 42 come into contact. The wiring moved to the inside of the power drive unit 34 is protected by the protective plate 70 and the bolt fastening portion 50, and is not sandwiched between the outer surface a of the storage portion 42 and the partition wall 30, and damage to the wiring is prevented. It can be effectively prevented.

  Furthermore, since the bolt fastening portion 50 is covered with the protection plate 70, it is possible to prevent the wires from being caught by the bolt fastening portion 50 and being pulled as the power drive unit 34 moves.

  Since each corner | angular part of the protection board 70 is formed in circular arc shape in the protection board 70, wirings move smoothly along each vertical board. In addition, since the upper end of each vertical plate is curved in an arc shape in the protective plate 70, no shear force acts on the upper end of the protective plate 70, and the wiring is not damaged. In addition, since the upper end is curved, the rigidity is improved, the deformation is less caused by a collision, and the wirings can be effectively protected.

  Further, since the front end of the first vertical plate 74 is close to the rear wall surface d of the power drive unit 34 and the front end of the third vertical plate 78 is close to the right wall surface f of the power drive unit 34, the protection plate 70 is protected. Since the first vertical plate 74 and the third vertical plate 78 can support the fact that the protective plate 70 does not rotate when the 70 is attached or collides, and the protective plate 70 falls down at the time of the collision, the wirings are effectively protected. it can.

  FIG. 6 shows a protective plate 71 having a different form from the above example. As shown in FIG. 6, the protection plate 71 is provided with a mounting piece 72 at a substantially intermediate position of the second vertical plate 76. Other configurations of the protection plate 71 are substantially the same as the configuration of the protection plate 70.

  The attachment piece 72 is formed, for example, by punching an intermediate portion of the second vertical plate 76 and bending it inside the protective plate 71. If comprised in this way, if the attachment piece 72 is fixed to the bolt fastening part 50 with the volt | bolt 60, the upper end of the bolt fastening part 50 will be pinched | interposed into the upper and lower sides of the bolt fastening part 50 from the 1st vertical board 74 to the 3rd vertical board | plate. A plate 78 can be disposed.

  As a result, the protective plate 71 can protect the wirings in a wide range up and down. Further, since the first vertical plate 74 and the third vertical plate 78 are extended downward, the impact at the time of collision can be dispersed vertically, and the protection plate 71 can be further prevented from falling due to the impact at the time of collision.

  The attachment piece 72 may be attached to the second vertical plate 76 by welding or the like. In addition, the protection plate 70 and the like may be inclined such that the upper portion of the second vertical plate 76 is away from the extension line at the center of the female screw portion 52 of the bolt fastening portion 50. Then, even if the upper end of the second vertical plate 76 is curved to the inside of the protective plate 70 or the like, a tightening tool for fastening the bolt 60 to the bolt fastening portion 50 can be easily inserted from above the protective plate 70. it can.

  Further, in the protective plate 70, the protective plate 71, etc., as in the protective plate 73 shown in FIG. The recess 81 has a shape that is recessed from the outside to the inside of the protective plate 73. By providing the concave portion 81, the rigidity of the crossing portion of each vertical plate is improved, deformation and tilting at the time of collision can be prevented, and wirings can be more effectively protected.

  In addition, this invention is not restricted to the said embodiment, It can change suitably. In the above example, the upper surface of the protective plate 70 or the like is curved in an arc shape inside the protective plate 70 or the like. However, the present invention may be a flat plate shape, and the lower end of the protective plate 70 or the like may be arcuate inward. It may be curved. In the above embodiment, three vertical plates are provided on the protective plate 70 and the like. However, the number of vertical plates is increased in accordance with the positional relationship between the power drive unit 34 and the wirings, the angle between the vertical plates and the vertical plate. The angle with the rear wall surface d of the power drive unit 34 may be changed.

  The present invention can be used for an electric vehicle.

  DESCRIPTION OF SYMBOLS 10 ... Vehicle, 16 ... Engine room, 30 ... Bulkhead, 32 ... Gasoline engine, 34 ... Power drive unit, 40 ... Housing, 42 ... Storage part, 44 ... Cover member, 50 ... Bolt fastening part, 56 ... Bolt penetration part, 60 ... bolt, 62 ... connector, 70 ... protective plate, 72 ... mounting piece, 74 ... first vertical plate, 76 ... second vertical plate, 78 ... third vertical plate, 80 ... bolt hole, 81 ... recess.

Claims (9)

A power drive control device disposed in front of a partition wall provided in a front part of the passenger compartment, with wirings interposed between the partition wall, and
A casing that covers the periphery of the power drive control device and includes a storage section and a lid member assembled to the storage section;
A fastening portion provided on an outer surface of the housing, and fastened with a fastening member for fixing the lid member to the storage portion;
A wiring protection structure for a vehicle, comprising: a protection plate attached to the fastening portion with a width direction inclined forward and backward with respect to the longitudinal direction of the vehicle. The protective plate is
An attachment piece having a through hole through which a fastening member fastened by the fastening portion of the storage portion passes,
The vehicle according to claim 1, further comprising: a vertical plate that is continuous with the attachment piece and is raised to the outside of the fastening portion and attached with a width direction inclined forward and backward with respect to the vehicle front-rear direction. Wiring protection structure. The protective plate is attached to a corner of the housing on the partition side,
The vehicle vertical wiring protection structure according to claim 2, wherein a front end of the vertical plate is inclined outward from the rear end of the corner portion of the housing.   The said protection board is provided with the 1st vertical board in which the front end inclines inward of the said housing | casing, and the 2nd vertical board in which the front end inclines outward of the said housing | casing. Wiring protection structure for vehicles as described in 4.   The wiring protection structure for a vehicle according to claim 4, wherein upper ends of the first vertical plate and the second vertical plate are curved inward. The protective plate has a third vertical plate at a front end of the second vertical plate,
The third vertical plate extends to the housing side,
The vehicle wiring protection structure according to claim 5, wherein a front end of the first vertical plate and a front end of the third vertical plate are close to an outer surface of the housing.   The wiring protection structure for a vehicle according to any one of claims 4 to 6, wherein an upper end of the second vertical plate is inclined in a direction away from a vertical extension line at a center of the fastening portion.   The vehicle wiring protection structure according to any one of claims 2 to 6, wherein the mounting piece is provided at a lower end of the vertical plate.   The vehicle attachment protection structure according to any one of claims 2 to 6, wherein the attachment piece is provided at an intermediate position in the vertical direction of the vertical plate.

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