JP4107034B2 - Vehicle motor with drain pipe - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle motor with a drain pipe, and more particularly to a vehicle motor with a drain pipe having a structure in which the drain pipe is attached to a motor housing.
[0002]
[Prior art]
The motor mounted on the vehicle is required to have a structure that can withstand water spray, for example, flooding of high-pressure water for washing the vehicle or submersion. For this reason, a completely waterproof structure can be considered, but the manufacturing cost is high, and the internal temperature rises. In view of this, conventionally, a structure has been adopted in which water is difficult to enter inside, and the intruded water can be quickly removed to the outside. For example, Patent Document 1 discloses a structure in which a drain pipe attached to a casing has an internal space divided into a plurality of sections and drain outlets provided in different directions for each section. Patent Document 2 is an example of an open utility model gazette, but in a drain pipe attached to a casing of a rotating electrical machine, a structure having a labyrinth-like internal space and at least two drain outlets that open horizontally is disclosed. The
[0003]
[Patent Document 1]
JP 2002-78275 A [Patent Document 2]
Japanese Utility Model Publication No. 3-127465
[Problems to be solved by the invention]
The drainage pipes attached to these casings have a so-called labyrinth structure, and consideration is given to preventing water from entering the interior from a drain outlet when, for example, water is sprayed. However, since there are multiple drain outlets and no particular consideration is given to the direction of the drain outlet, when the direction of watering etc. is different from the direction of the drain outlet, there is little inundation from the drain outlet. On the other hand, when water is sprinkled or water on a road that jumps up from a tire that rotates during traveling of the vehicle is faced in the direction of the drain, it is susceptible to flooding. In other words, the degree of water immersion varies depending on the direction of the water received, the resistance to water immersion is unstable, and when receiving water continuously facing the drain outlet, draining becomes difficult and water stays inside the casing. There was a problem to do.
[0005]
The objective of this invention is providing the motor for vehicles with a drain pipe which solves the subject of this prior art and has a structure which can suppress flooding irrespective of the direction of the water to receive.
[0006]
[Means for Solving the Problems]
To achieve the above object, a motor for a vehicle with a drain pipe according to the present invention includes a motor housing that houses a rotor and a stator and includes a drain hole for draining water in the motor, a drain pipe, the provided, a motor for any one Ru is located near the opposite outer wall of the vehicle of the tire of engine mounted between the left and right tires, the water drain hole is opened in the outer wall of the motor housing And a second hole connected substantially orthogonally at the abutting portion of the first hole, and the drain pipe has a water suction port that can be in close contact with the drain hole at one end, and the water absorption A pipe body having a drain opening communicating with the mouth, and a pair of L clips fixed in an axial symmetry with respect to the central axis of the pipe body at the side end of the water suction mouth, and having a hook portion at the tip Legs are elastic A pair of L clips, each of which has a substantially L-shaped L clip and is fixed with the base of the leg portion standing upright on the side end portion of the water inlet, and the tips of the hook portions facing each other outward, The pair of L clips is closed and inserted into the first hole, and the pair of L clips is opened in the second hole to fix the drainage pipe to the motor housing, The drain port of the drain pipe is positioned so as to face the outer wall of the engine of the vehicle.
[0007]
With the above structure, the drain outlet of the drain pipe is positioned so as to face the outer wall of the engine of the vehicle. Vehicle motors are usually placed in close proximity to the vehicle engine, and in some cases are often attached to the engine. According to the above configuration, the drain port of the drain pipe can be disposed close to the engine. Therefore, even if water or water on the road that jumps up from the tires while the vehicle is running from various directions to the drain pipe, the drain outlet of the drain pipe faces the outer wall of the vehicle engine. Faced with very little water. Therefore, it is possible to sufficiently suppress the inundation of the vehicle motor regardless of the direction of the water received by the drain pipe.
[0009]
Further, the pair of L clips has a hook portion with a width W at the tip thereof, d ≧ W ≧ d / 2, where d is the diameter of the second hole 54, and the length of the leg portion is the first length. Ri same der the length of the hole, the distance D between the tip of the pair of hook portions in the open state in the second hole, D ≧ 2d der Rukoto are preferred. With the above structure, once the tips of the pair of L clips are opened in the second hole , the degree of freedom of movement of the hook portion in the second hole is limited. Therefore, the water drain pipe is fixed securely positioned in the motor housing, the direction of discharge port of the water drain pipe is kept constant.
[0011]
Moreover, it is preferable that the inside of the drain pipe has a maze structure. The above structure further suppresses water immersion.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a conceptual diagram showing an arrangement of a vehicle motor 16 with a drain pipe in the vehicle 10. (A) is a state seen from the upper surface of the vehicle, and (b) is a state seen from the front surface of the vehicle. The vehicle 10 includes a front wheel tire 12, a vehicle driving engine 14, and a vehicle motor 16 with a drain pipe attached to the engine 14. The motor 16 for a vehicle with a drain pipe has a motor body including a rotor and a stator, and a drain pipe 20 that is attached to the motor body and drains water in the motor. The drain port 22 of the drain pipe 20 is positioned to face the outer wall of the engine 14.
[0013]
Now, when the vehicle 10 travels in the rain, the water 13 jumps up from the road surface 11 due to the rotation of the tire 12 and scatters toward the vehicle components such as the engine 14 and the motor main body. Thus, even if the water 13 jumps from various directions toward the drainage pipe 20, the drainage port 22 of the drainage pipe 20 faces the outer wall of the engine 14 and is located close to the drainage port 22. And very little water. That is, it is possible to suppress flooding regardless of the direction of water to be received. The drain port of the drain pipe may be positioned and disposed opposite to an outer wall of a vehicle component other than the engine, such as a mount member for mounting the engine on the vehicle.
[0014]
Below, it demonstrates about the structure attached to a motor by positioning the direction which the drain outlet of a drainage pipe faces. FIG. 2 is a diagram showing a mounting relationship between the motor main body 18 and the drainage pipe 20 in the vehicle motor 16 with a drainage pipe. The motor body 18 includes a motor housing 40 that accommodates the rotor 17, the stator 19, and the like. A water drain hole 50 for draining water that has entered the motor is provided in the motor housing 40. The drain pipe 20 is connected to the drain hole 50 and is positioned so that the drain port 22 faces the outer wall of the engine and is attached to the motor housing 40. In the drawing, assuming that the outer wall of the engine is parallel to the paper surface and on the front side of the paper surface, the direction of the drain port 22 is shown as a direction perpendicular to the paper surface and the front side.
[0015]
FIG. 3 is an enlarged partial sectional view showing the relationship between the drain hole 50 of the motor housing 40 and the drain pipe 20. (A) is the front view seen from the same direction as FIG. 2, (b) is the side view seen from the direction orthogonal to (a).
[0016]
The drain hole 50 is connected to the first hole 52 having the opening 58 in the outer wall 42 of the motor housing 40, the second hole 54 connected substantially orthogonally at the abutting portion of the first hole, and the diagonally connected to the second hole 54. And a third hole 56 extending further into the motor housing 40. That is, the drainage hole 50 is configured to have a bent shape that is difficult for water to enter from the outside. The first hole 52 can be obtained by forming a so-called "mekura hole" in the motor housing 40, and the second hole 54 is also formed in the opening by forming a mekura hole in a direction orthogonal to the first hole 52. It can be obtained by embedding a water leakage prevention bolt 60 or the like.
[0017]
The drain pipe 20 includes a pipe body 24 and a clip member 70 described in detail later. The pipe body 24 is made of a suitable material such as resin or metal, and has a water inlet 26 that can be in close contact with the opening 58 of the drain hole 50 at one end and a drain port 22 that communicates with the water inlet 26. It is. A plurality of louvers 28 are formed in the pipe body 24 so as to protrude alternately in the radial direction, and the communication passage 30 between the water inlet 26 and the drain port 22 is so-called that water hardly enters from the outside. It has a labyrinth (maze) structure.
[0018]
The end portion of the pipe body 24 where the water inlet 26 is provided becomes a flange 32 having a larger diameter than the outer diameter of the cylindrical portion of the pipe body 24, and the upper surface 34 of the flange 32 is a surface shape following the outer wall 42 of the motor housing 40. Have A clip member 70 having a pair of L clips is provided on the flange 32.
[0019]
FIG. 4 is a perspective view of the drain pipe 20. A clip member 70 is provided on the upper surface 34 of the flange 32 of the pipe body 24. The clip member 70 has an upper surface corresponding to the upper surface 34 of the flange 32, and has a pair of L clips 72a and 72b on the upper surface. The pair of L clips 72 a and 72 b is provided at the side end portion of the water inlet 26 on the upper surface 34 of the flange 32 so as to be fixed symmetrically with respect to the central axis of the communication passage 30 of the pipe body 24.
[0020]
The pair of L clips 72a and 72b have hook portions 74a and 74b at their tips, and the leg portions 76a and 76b have elasticity. The hooks 74a and 74b at the tips of the pair of L clips 72a and 72b can be opened and closed by the elasticity of the leg portions 76a and 76b, but the opening and closing direction is set in the direction in which the opening surface of the drain port 22 faces in the pipe body 24. Is done. The clip member 70 may be manufactured separately from the pipe main body 24 as shown in the figure, and may be positioned and fixed to the pipe main body 24, or may be manufactured integrally with the pipe main body 24.
[0021]
Due to the elasticity of the leg portions 76 a and 76 b, the distance between the tips when the tips of the pair of L clips 72 a and 72 b are closed is set smaller than the inner diameter of the first hole 52. That is, the pair of L clips 72 a and 72 b can be inserted into the first hole 52 by closing the tips of the pair of L clips 72 a and 72 b.
[0022]
Further, the length H of the leg portions 76 a and 76 b is set to be the same as the length of the first hole 52 provided in the motor housing 40. That is, when the pair of L clips 72 a and 72 b are inserted into the first hole 52 and the upper surface 34 of the drain pipe 20 is brought into contact with the outer wall 42 of the motor housing 40, the ends of the pair of L clips 72 a and 72 b are exactly the first. The opening length is set in the two holes 54.
[0023]
The distance D between the tips when the tips of the pair of L clips 72 a and 72 b are opened is set to be larger than the inner diameter d of the second hole 54. In other words, the pair of L clips 72a and 72b when the tips are opened are restricted from rotating about the axis of the first hole 52 due to interference between the tips of the hook portions 74a and 74b and the inner diameter of the second hole 54. Is done. Preferably, D ≧ 2d.
[0024]
Further, the width W of the hook portions 74 a and 74 b at the tips of the pair of L clips 72 a and 72 b is set large within the range of the inner diameter d of the second hole 54. For example, it is preferable to satisfy W ≧ d / 2.
[0025]
FIGS. 5A, 5 </ b> B, and 5 </ b> C are views showing a state in which the drain pipe 20 including a pair of L clips 72 a and 72 b is attached to the motor housing 40. In the drawing, a sectional view (side view) corresponding to FIG. 3B is shown below, and a sectional view along the central axis of the second hole 54 is shown upward. (A) shows the state in which the drain pipe 20 is separated from the motor housing 40. A state in which the ends of the pair of L clips 72 a and 72 b are closed from this state and inserted into the first hole 52 of the motor housing 40 is shown in FIG.
[0026]
(C) shows a state in which the top surface 34 of the drain pipe 20 is inserted until it contacts the outer wall 42 of the motor housing 40 and the tips of the pair of L clips 72 a and 72 b are opened in the second hole 54. As described above, the length H of the leg portions of the pair of L clips 72a and 72b is set to be the same as the length of the first hole 52, and the distal ends when the distal ends of the pair of L clips 72a and 72b are opened. The distance D between them is larger than the inner diameter d of the second hole 54, and the width W of the hook portions 74 a and 74 b is set larger within the range of the inner diameter d of the second hole 54. Therefore, after the tips of the pair of L clips 72a and 72b are opened in the second hole 54, the rotation of the pair of L clips 72a and 72b is restricted, and the drain pipe 20 changes the direction of the drain port 22. It is positioned as a direction toward the outer wall of the engine and fixed to the motor housing 40.
[0027]
【The invention's effect】
According to the motor for a vehicle with a drain pipe according to the present invention, it is possible to suppress inundation regardless of the direction of the received water.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing a state in which a vehicle motor with a drain pipe is arranged in a vehicle in an embodiment according to the present invention.
FIG. 2 is a view showing a mounting relationship between a motor body and a drain pipe in the vehicle motor with a drain pipe according to the embodiment of the present invention.
FIG. 3 is a partial cross-sectional view showing a relationship between a drain hole of a motor housing and a drain pipe in the embodiment according to the present invention.
FIG. 4 is a perspective view of a drain pipe in an embodiment according to the present invention.
FIG. 5 is a view showing a state in which a drain pipe including a pair of L clips is attached to a motor housing in the embodiment according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Vehicle, 12 Tire, 13 Water, 14 Engine, 16 Motor for vehicles with drain pipe, 20 Drain pipe, 22 Drain port, 24 Pipe body, 26 Water inlet, 30 Communication path, 32 Flange, 34 Top surface, 40 Motor Housing, 42 outer wall, 50 drain hole, 52 1st hole, 54 2nd hole, 56 3rd hole, 70 clip member, 72a, 72b L clip, 74a, 74b hook part, 76a, 76b leg part.

Claims (3)

A motor housing that houses a rotor and a stator and includes a drainage hole for draining water in the motor, and a drainage pipe, and is mounted on any one of the tires of the engine mounted between the left and right tires a motor for a vehicle that will be placed in the vicinity of the opposite outer wall,
The drain hole is
A first hole having an opening in the outer wall of the motor housing, and a second hole connected substantially orthogonally at the abutting portion of the first hole;
The drain pipe is
A pipe body having a water inlet that can be in close contact with the drain hole at one end, and a drain port that communicates with the water inlet;
A pair of L clips fixed at the side end portion of the water suction port in a symmetrical manner with respect to the central axis of the pipe body, and having a substantially L-shaped L having a hook portion at the tip and an elastic leg portion. A pair of L clips arranged with the bases of the legs standing upright on the side ends of the water inlets and the tips of the hooks facing each other outward;
With
The ends of the pair of L clips are closed and inserted into the first hole, and the ends of the pair of L clips are opened in the second hole to fix the drain pipe to the motor housing, and the drain pipe The vehicle motor with a drain pipe is characterized in that the drain outlet is positioned so as to face the outer wall of the engine of the vehicle. In the motor for vehicles with a drain pipe according to claim 1,
The pair of L clips is
The width W of the hook portion at the tip is d ≧ W ≧ d / 2, where d is the diameter of the second hole 54,
The length of the leg is the same as the length of the first hole;
A vehicle motor with a drainage pipe, wherein a distance D between the tips of the pair of hook portions in a state opened in the second hole is D ≧ 2d . In the motor for vehicles with a drain pipe according to claim 1 or 2,
  A motor for a vehicle with a drain pipe, wherein the drain pipe has a labyrinth structure.

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