JP2013169929A - Blower mounted to vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a blower from being flooded in via a pull-in port for a wiring harness.SOLUTION: A blower mounted to a vehicle includes a fan for generating an air flow, a motor for driving the fan to be rotated, and a blower case storing the fan and the motor, the blower case is provided with an air inlet and an air outlet, and a pull-in port for a wiring harness connected to the motor is formed on the upper face of the blower case. The blower further includes a waterproof cover for covering the pull-in port and at least part of the wiring harness exposed through the pull-in port to the upper face of the blower case, and a drain path formed along the periphery of the waterproof cover to prevent the entry of water through a wiring harness insertion part provided on the waterproof cover to the inside of the waterproof cover.

Description

  The present invention relates to a waterproof structure for a blower mounted on a vehicle.

  For example, as described in Patent Document 1, a blower includes a centrifugal fan that generates an air flow, a motor that rotationally drives the centrifugal fan, and a blower case (casing) that houses the centrifugal fan and the motor. It is configured. Further, the motor is connected to a wire harness or the like, and a pull-in port for the power supply wire harness is formed in the blower case (see, for example, Patent Document 2).

JP 2009-280101A Japanese Patent Laid-Open No. 11-310027

  A blower mounted in a passenger compartment or luggage space may be exposed to water. For example, when a passenger spills liquid such as water, the blower may get wet. When liquid such as water is applied to the upper surface of the blower case, the blower circuit for motor drive control provided inside the blower case enters through the wire harness lead-in port and gets wet. Countermeasures are necessary.

  An object of this invention is to provide the blower mounted in the vehicle which prevented the flooding in the blower via the drawing-in opening of a wire harness.

  A blower mounted on a vehicle according to the present invention includes a fan that generates an air flow, a motor that rotationally drives the fan, and a blower case that houses the fan and the motor. The blower case is provided with an intake port and a blowout port, and a wire harness lead-in port connected to the motor is formed on the upper surface of the blower case. A waterproof cover that covers at least a part of the wire harness that is exposed to the upper surface of the blower case from the inlet and the inlet, and a waterproof cover that is formed along the periphery of the waterproof cover and from the insertion portion of the wire harness provided in the waterproof cover And a discharge passage for preventing water from entering the inside.

  According to the invention of the present application, the waterproof cover prevents water from entering the blower case from the inlet, and water from the insertion portion of the wire harness provided in the waterproof cover to the inside of the waterproof cover is provided around the waterproof cover. Since intrusion is prevented, it is possible to prevent water in the blower through the wire harness pull-in port.

It is an external appearance perspective view of a blower. It is a schematic diagram of the internal structure of a blower. It is a figure which shows an example of the waterproof structure of the inlet of a wire harness. It is AA sectional drawing of FIG. It is a figure which shows an example which applied the blower to the battery pack mounted in a vehicle interior. It is a figure which shows the modification of the waterproof structure of the drawing-in opening of a wire harness.

  Examples of the present invention will be described below.

Example 1
1-6 is a figure which shows the blower mounted in the vehicle of this invention. FIG. 1 is an external perspective view of the blower 1 of this embodiment. FIG. 2 is a schematic diagram of the internal structure of the blower 1.

  The blower 1 of the present embodiment is, for example, a centrifugal blower, and includes a fan 2 and a motor 3 that rotationally drives the fan 2, and the fan 2 and the motor 3 are accommodated in a blower case 4. The motor 3 is connected to a rotating shaft 21 extending in a direction (X direction) orthogonal to the radial direction of the fan 2, and the motor 3 is connected to a wire harness H as will be described later.

  The motor 3 is provided with a blower circuit 31 for motor drive control, and the wire harness H is connected to the blower circuit 31. The electric power supplied through the wire harness H is output to the motor 3 through the blower circuit 31.

  The blower case 4 is a spiral casing, and is formed with a housing portion 43 in which the fan 2 and the motor 3 are housed, and an air inlet 41 and a blowout port 42 communicating with the housing portion 43. The air inlet 41 and the air outlet 42 communicate with each other via the accommodating portion 43, and form an air passage. Air from the intake port 41 taken in from the radial direction (YZ plane direction) of the fan 2 is discharged out of the blower 1 through the fan 2 from a blowout port 42 that opens in the X direction (direction perpendicular to the radial direction of the fan 2). .

  The intake port 41 communicates with the vehicle interior through a vehicle interior or an intake duct that opens into the vehicle interior, and the blower 1 of this embodiment is mounted in the vehicle interior. The blower 1 is a blower that sends air from a passenger compartment to a predetermined target through a blowout port 42. The vehicle interior is an interior space on the upper surface side of the vehicle floor panel, and may include a space where a passenger on which a seat or the like is placed, a luggage space, and the like.

  As shown in FIG. 1, the blower case 4 can be composed of a spiral upper case and a lower case, and an air passage and a housing portion 43 are formed inside by combining the upper case and the lower case vertically. It has become so. The blower case 4 can be formed of resin or the like.

  On the upper surface of the blower case 4, a lead-in port 44 for the wire harness H connected to the motor 3 is formed. The lead-in port 44 is an opening that opens in the vertical direction (X direction) of the blower case 4 and is provided with a grommet. On the upper surface of the blower case 4, a waterproof cover 45 is provided at a position where the inlet 44 is formed, and the inlet 44 is covered with the waterproof cover 45.

  As shown in FIG. 1, a clamp portion 48 that locks the wire harness H is provided on the upper surface of the blower case 4. In this embodiment, the wire harness H extending from the waterproof cover 45 is locked to the blower case 4 by the two clamp portions 48.

  The wire harness H is a cable used for power supply and signal communication, and is a transmission line for transmitting a drive control signal for the motor 3 to the blower circuit 31 and / or a power line for the motor 3. At the end of the wire harness H, a connector C connected to a power source or the like is provided.

  3 is a diagram illustrating an example of a waterproof structure of the lead-in port 44 of the wire harness H, and FIG. 4 is a cross-sectional view taken along line AA in FIG.

  The waterproof cover 45 is a cover member that forms a space corresponding to the thickness of the wire harness H and covers at least a part of the wire harness H exposed to the upper surface of the blower case from the draw-in port 44 and the draw-in port 44. The waterproof cover 45 is formed in a substantially U-shape and also functions as a wiring guide portion of the wire harness H that extends from the drawing port 44. The waterproof cover 45 can be formed integrally with the blower case 4 or can be individually configured to be removable from the upper surface of the blower case 4.

  The waterproof cover 45 has a substantially L shape (substantially arc shape) from the position where the lead-in port 44 is formed, and the other end side 45b separated from the one end side 45a of the substantially L-shape where the lead-in port 44 is located. Further, an insertion portion (opening portion) 46 of the wire harness H that is drawn into the blower case 4 is provided. The insertion portion 46 is an outlet portion of the wire harness H that is formed on the side wall portion of the waterproof cover 45 and extends from the drawing port 44.

  The wire harness H connected to the motor 3 is covered by the waterproof cover 45 from the drawing port 44 to the insertion portion 46 by the waterproof cover 45 and exposed from the insertion portion 46 to the upper surface of the blower case 4.

  The drainage channel 47 is formed around the waterproof cover 45. The drainage channel 47 is formed lower in the X direction than the waterproof cover 45, and water attached to the surface of the waterproof cover 45 is guided to the drainage channel 47.

  The drainage channel 47 of this embodiment is formed in a concave shape along the shape of the waterproof cover 45, and the drainage channel 47 a on the substantially L-shaped other end side 45 b of the waterproof cover 45 extends from the drainage channel 47 b on the one end side 45 a. It is inclined towards. That is, the drainage channel 47 is inclined from the upstream drainage channel 47a toward the downstream 47b, and is drained from the drainage channel 47b to the upper surface of the blower case 4. The end of the drainage channel 47a is closed, and the water flowing down to the drainage channel 47 is discharged from the downstream side of the drainage channel 47b to the upper surface of the blower case 4, that is, outside the waterproof cover 45.

  As shown in FIG. 4, the insertion portion 46 is formed with a holding portion 46 a, a wire harness H inserted through the insertion portion 46 is brought into contact with the upper surface of the blower case 4, and the wire harness is connected from the upper surface of the blower case 4. It fixes so that it may not float, and functions as a clamp part of the wire harness H exposed from the insertion part 46. FIG. The insertion portion 46 (holding portion 46 a) of this embodiment serves as a fulcrum in the wiring direction of the wire harness H, and the wire harness H can be bent and wired in the left-right direction of the insertion portion 46.

  Specifically, for example, as shown in FIG. 1, the pressing portion 46 a serves as a fulcrum, and the wire harness H can be wired so as to be bent in the direction opposite to the opening surface of the insertion portion 46. The wire harness H wired so as to be bent in the direction opposite to the opening surface of the insertion portion 46 can be locked to the clamp portion 48 formed on the upper surface of the blower case 4, and the insertion portion 46 and the clamp portion 48. Thus, the wire harness H can be wired without floating from the upper surface of the blower case 4.

  The insertion part 46 can be formed in the side wall part of the other end side 45b of the waterproof cover 45, and is open in the Z direction. The holding part 46a can be formed as a bent part that projects the opening upper part of the insertion part 46 to the inside of the opening surface, and the height from the upper surface of the blower case 4 to the holding part 46a is substantially the same as the thickness of the wire harness H. Is formed. Moreover, in order to protect the wire harness H which contact | abuts the pressing part 46a, chamfering etc. may be given.

  FIG. 5 is a diagram illustrating an example in which the blower 1 of the present embodiment is applied to the battery pack 100. The blower 1 of the present embodiment can be provided as a cooling device that sends air in the vehicle compartment into the battery pack 100. The battery pack 100 includes a battery stack 200 in a battery case 130 and includes an intake path 110 and an exhaust path 120 in which the blower 1 is provided. The blower 1 is inhaled via an attachment portion 5 of the blower case 4. It can be attached to the path 110.

  The air in the vehicle compartment taken into the battery pack 100 by the blower 1 is guided to the exhaust path 120 while exchanging heat with the battery stack 200 and is returned to the vehicle interior from the exhaust path 120 again. The blower 1 can be provided in the intake path 110 of the battery case 130. The lower part of FIG. 5 is an enlarged view of the intake passage 110 shown in the upper part as viewed from the left. The wire harness H is in contact between the upper surface of the blower case 4 and the battery case 130 constituting the intake passage 110. Or the wire harness H can be accommodated in the battery case 130 without floating from the upper surface of the blower case 4.

  FIG. 6 is a view showing a modified example of the waterproof cover 45 of the first embodiment. In the modified example of FIG. 6, the insertion portion 46 is not provided on the side wall portion in the outer peripheral direction of the prevention cover 45, and the other end side 45b. The end 45c of the is open. And the guide part 45d extended in the direction orthogonal to the circumferential direction of the blower case 4 is provided at predetermined intervals and the edge part 45c which opens. A gap D between the end portion 45c and the guide portion 45d is substantially the same as the thickness of the wire harness H.

  The wire harness H exposed from the end portion 45c to the upper surface of the blower case 4 is in contact with the guide portion 45d and guided toward the outside of the blower case 4, while the gap D between the end portion 45c and the guide portion 45d is provided. Engage. That is, the gap D functions as a fulcrum in the same manner as the insertion portion 46 (pressing portion 46a), and the wiring harness B is bent in the left-right direction of the gap D while preventing the wire harness H from floating from the upper surface of the blower case 4. it can.

  As described above, in the blower 1 of this embodiment, the waterproof cover 45 prevents the water from entering the blower case 4 from the inlet 44, and the discharge path 47 around the waterproof cover 45 is provided in the waterproof cover 45. Since entry of water from the insertion portion 46 of the harness H into the waterproof cover is prevented, water in the blower 1 through the lead-in port 44 of the wire harness H can be prevented.

  Moreover, since the insertion part 46 which is an exit part of the wire harness H of the waterproof cover 45 functions as a clamp for fixing the wire harness H to the upper surface of the blower case 4, the wire harness H is not lifted from the upper surface of the blower case 4. Can be wired and the number of clamps can be reduced. Moreover, it becomes difficult to form a clearance gap between the insertion part 46 and the wire harness H by the pressing part 46a, and the penetration of water from the insertion part 46 into the waterproof cover 45 can be suppressed.

DESCRIPTION OF SYMBOLS 1 Blower 2 Fan 3 Motor 4 Blower case 41 Intake port 42 Exhaust port 43 Accommodating part 44 Retraction port 45 Waterproof cover 46 Insertion part 47 Drainage channel 48 Clamp part H Wire harness

Claims (1)

A wire harness lead-in port that has a fan that generates an air flow, a motor that rotationally drives the fan, and a blower case that houses the fan and the motor and that is provided with an air inlet and an outlet, and is connected to the motor Is a blower mounted on a vehicle formed on the upper surface of the blower case,
A waterproof cover that covers at least a part of the wire harness exposed on the upper surface of the blower case from the pull-in port and the pull-in port;
A discharge path that is formed along the periphery of the waterproof cover and prevents water from entering the waterproof cover from an insertion portion of a wire harness provided in the waterproof cover;
A blower comprising:

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