JP2004120939A - Motor for vehicle with drain pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the ingress of water into a motor for a vehicle with a drain hose regardless of the direction of incoming water. <P>SOLUTION: A water drain hole 50 is formed in a bent shape and includes a first hole 52 having an opening 58 in the outer wall 42 of a motor housing 40 and a second hole 54 substantially orthogonally connecting to the first hole. The drain pipe 20 is provided with a clip member 70 having a pair of L clips. A pair of the L clips have a hooked portion at their tips, and their leg portions are elastic. The tips of a pair of the L clips are closed and inserted into the first hole 52, and are opened in the second hole 54. Thereby, the drain pipe 20 is secured on the motor housing 40, and the drain port 22 of the drain pipe 20 is positioned opposite to the outer wall of the engine. The hose body 24 is of maze structure, and has a plurality of louvers 28 formed therein. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a motor for a vehicle with a drain pipe, and more particularly to a motor for a vehicle with a drain pipe having a structure for mounting the drain pipe to a motor housing.
[0002]
[Prior art]
The motor mounted on the vehicle is required to have a structure that can withstand water spraying, for example, high-pressure water for washing the vehicle, or withstand submersion. For this reason, a completely waterproof structure can be considered, but the manufacturing cost is high and there are disadvantages such as an increase in the internal temperature. Therefore, conventionally, a structure has been adopted in which water does not easily enter the inside, and the entered water can be quickly removed to the outside. For example, Patent Document 1 discloses a structure in which, in a drain pipe attached to a casing, an internal space is divided into a plurality of sections, and each section has a drain port provided in a different direction. Patent Document 2 is an example of a public utility model publication, but discloses a structure in which a drain pipe attached to a casing of a rotating electric machine has a maze-shaped internal space and at least two drain ports that open in the horizontal direction. You.
[0003]
[Patent Document 1]
JP 2002-78275 A [Patent Document 2]
JP-A-3-127465 [0004]
[Problems to be solved by the invention]
The drain pipes attached to these casings have a so-called maze structure inside, so that, for example, when water is sprayed or the like, water is hardly penetrated into the inside from a drain port. However, since there are multiple drains and no special consideration is given to the direction of the drains, when the direction of sprinkling etc. is different from the direction of the drains, there is little inundation from the drains. On the other hand, when water is splashed or water on the road that jumps from tires rotating while the vehicle is running is received in the direction of the drain port, the vehicle is susceptible to flooding. In other words, the degree of inundation differs depending on the direction of the received water, the resistance to inundation is unstable, and when the inundation facing the drain port is continuously received, drainage becomes difficult, and water stays inside the casing. There was a problem to do.
[0005]
An object of the present invention is to solve the problems of the related art and to provide a motor for a vehicle with a drain pipe having a structure capable of suppressing inundation regardless of the direction of water to be received.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a motor for a vehicle with a drainage pipe according to the present invention accommodates a rotor and a stator, a motor housing including a drainage hole for draining water in the motor, and a drainage pipe, Wherein the drainage hole includes a first hole having an opening in an outer wall of the motor housing, and a second hole connected substantially orthogonally at a contact portion of the first hole. A pipe body having at one end a water suction port capable of closely adhering to the water drain hole, and a drain port communicating with the water suction port; and a central axis of the pipe body at a side end of the water suction port. A pair of L clips which are fixed axially symmetrically with respect to each other, and have a hook portion at the tip and an approximately L-shaped L clip having elastic legs, and the base of the leg portion is positioned on the side of the water inlet. Fix it upright on the end A pair of L-clips arranged so that the ends of the portions face each other outwardly, and the tips of the pair of L-clips are closed and inserted into the first hole, and the pair of L-clips are inserted in the second hole. The drain pipe is fixed to the motor housing by opening a tip of the vehicle, and a drain port of the drain pipe is positioned so as to face an outer wall of a component of the vehicle.
[0007]
With the above structure, the drain port of the drain pipe is positioned by the substantially L-shaped L clip so as to face the outer wall of the vehicle component. Therefore, even if water is sprinkled or water on the road that jumps up from the tires while the vehicle is running is traveling in various directions toward the drain pipe, the drain port of the drain pipe faces the outer wall of the vehicle components. Extremely low water exposure in the face of the mouth. Therefore, irrespective of the direction of the water received by the drainage pipe, it is possible to sufficiently prevent water from entering the inside of the vehicle motor.
[0008]
Preferably, the component of the vehicle is an engine of the vehicle. Vehicle motors are usually located close to the engine of the vehicle and are often attached to the engine. Therefore, the drain port of the drain pipe can be arranged close to the engine, and the inundation can be further suppressed.
[0009]
In addition, it is preferable that the length of the leg portion of the pair of L clips is the same as the length of the first hole. 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 legs is limited. Therefore, the drain pipe is securely positioned and fixed to the motor housing, and the direction of the drain port of the drain pipe is always maintained constant.
[0010]
Further, it is preferable that the distance between the tips of the pair of hook portions in the state where the pair of L clips is opened in the second hole is larger than the diameter of the second hole. According to 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 drain pipe is securely positioned and fixed to the motor housing, and the direction of the drain port of the drain pipe is maintained constant.
[0011]
Preferably, the inside of the drain pipe has a maze structure. The above structure further suppresses inundation.
[0012]
BEST MODE FOR CARRYING OUT 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 a vehicle 10. (A) is a state viewed from the top of the vehicle, and (b) is a state viewed from the front of the vehicle. The vehicle 10 includes a front wheel tire 12, an engine 14 for driving the vehicle, and a vehicle motor 16 with a drain pipe attached to the engine 14. The vehicle motor 16 with a drain pipe has a motor main body including a rotor and a stator, and a drain pipe 20 attached to the motor main body for draining water from the motor. The drain port 22 of the drain pipe 20 is positioned so as to face the outer wall of the engine 14.
[0013]
Now, when the vehicle 10 travels in rainy weather, the rotation of the tire 12 causes the water 13 to jump from the road surface 11 and scatter to the components of the vehicle such as the engine 14 and the motor body. As described above, even when the water 13 jumps from various directions toward the drain pipe 20, the drain port 22 of the drain pipe 20 faces the outer wall of the engine 14 and is disposed close to the drain port 22. It is extremely rare to suffer water. That is, immersion can be suppressed regardless of the direction of the received water. The drain port of the drain pipe may be positioned and arranged facing a component of the vehicle other than the engine, for example, an outer wall of a mount member for mounting the engine on the vehicle.
[0014]
Hereinafter, a structure in which the direction of the drain port of the drain pipe is positioned and attached to the motor will be described. FIG. 2 is a diagram showing the mounting relationship between the motor main body 18 and the drainage pipe 20 in the vehicle motor 16 with the drainage pipe. The motor main body 18 includes a motor housing 40 that houses the rotor 17, the stator 19, and the like, and a drain hole 50 for draining water that has entered the motor or the like is provided inside the motor housing 40. The drainage pipe 20 is connected to the drainage hole 50, the drainage port 22 is positioned so as to face the outer wall of the engine, and is attached to the motor housing 40. In the drawing, it is assumed that the outer wall of the engine is parallel to the paper surface and on the near side of the paper surface, and the direction of the drain port 22 is shown as a direction perpendicular to the paper surface and on the near side.
[0015]
FIG. 3 is an enlarged partial sectional view showing the relationship between the drainage hole 50 of the motor housing 40 and the drainage pipe 20. (A) is a front view seen from the same direction as FIG. 2, and (b) is a side view seen from a direction orthogonal to (a).
[0016]
The drain hole 50 has a first hole 52 having an opening 58 in the outer wall 42 of the motor housing 40, a second hole 54 connected substantially orthogonally at the end of the first hole, and an oblique connection 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 in which water cannot easily enter from the outside. The first hole 52 can be obtained by forming a so-called blind hole in the motor housing 40, and the second hole 54 also forms a blind hole in a direction orthogonal to the first hole 52, and has, for example, an opening in its opening. It can be obtained by embedding the water leakage prevention bolt 60 or the like.
[0017]
The drainage pipe 20 includes a pipe main body 24 and a clip member 70 described later in detail. The pipe body 24 is made of a suitable material such as resin or metal, and has a water inlet 26 at one end which can be in close contact with the opening 58 of the drain hole 50 and a drain 22 which communicates with the water inlet 26. It is. The inside of the pipe main body 24 is formed with a plurality of louvers 28 that are provided so as to protrude alternately in the radial direction, and the communication passage 30 between the water intake port 26 and the drain port 22 is so-called that water does not easily enter from the outside. It has a labyrinth (maze) structure.
[0018]
The end of the pipe main body 24 at which the water inlet 26 is provided becomes a flange 32 having a width larger than the outer diameter of the cylindrical portion of the pipe main body 24, and the upper surface 34 of the flange 32 has a surface shape following the outer wall 42 of the motor housing 40. Having. 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 main 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 are provided at the side end of the water inlet 26 on the upper surface 34 of the flange 32 and fixed axially symmetrically with respect to the center axis of the communication passage 30 of the pipe main body 24.
[0020]
The pair of L clips 72a and 72b have hook portions 74a and 74b at the tips, and the legs 76a and 76b have elasticity. The hooks 74a, 74b at the tips of the pair of L clips 72a, 72b can be opened and closed by the elasticity of the legs 76a, 76b, but the opening and closing direction is set in the pipe body 24 so that the opening surface of the drain port 22 faces. 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 legs 76a, 76b, the distance between the ends of the pair of L clips 72a, 72b when the ends are closed is set smaller than the inner diameter of the first hole 52. That is, by closing the tips of the pair of L clips 72a and 72b, the pair of L clips 72a and 72b can be inserted into the first hole 52.
[0022]
The length H of the legs 76a and 76b 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 72a and 72b 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 72a and 72b The length is set to be open in the two holes 54.
[0023]
The distance D between the ends of the pair of L clips 72a and 72b when the ends are opened is set to be larger than the inner diameter d of the second hole 54. That is, rotation of the pair of L clips 72a and 72b around the axis of the first hole 52 is restricted by the interference between the distal ends of the hook portions 74a and 74b and the inner diameter of the second hole 54 when the ends are opened. Is done. Preferably, D ≧ 2d.
[0024]
Further, the width W of the hook portions 74a, 74b at the tips of the pair of L clips 72a, 72b is set to be large within the range of the inner diameter d of the second hole 54. For example, it is preferable that W ≧ d / 2.
[0025]
FIGS. 5A, 5B, and 5C are views showing a state in which the drainage pipe 20 including the pair of L clips 72a and 72b is attached to the motor housing 40. FIG. In the figure, 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 above. (A) shows a state in which the drain pipe 20 is separated from the motor housing 40. From this state, the state where the tips of the pair of L clips 72a and 72b are closed and inserted into the first hole 52 of the motor housing 40 is shown in FIG.
[0026]
(C) shows a state in which the upper surface 34 of the drainage 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 72a and 72b are opened in the second hole 54. As described above, the length H of the leg 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 tip when the tip of the pair of L clips 72a and 72b is 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 74a and 74b is set to be 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, rotation and the like of the pair of L clips 72a and 72b are restricted, and the drain pipe 20 changes the direction of the drain port 22. It is positioned in the direction toward the outer wall of the engine and fixed to the motor housing 40.
[0027]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the motor for vehicles with a drainage pipe which concerns on this invention, flooding can be suppressed regardless of the direction of the received water.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing how a vehicle motor with a drain pipe is arranged in a vehicle in an embodiment according to the present invention.
FIG. 2 is a diagram showing a mounting relationship between a motor body and a drain pipe in a vehicle motor with a drain pipe according to an embodiment of the present invention.
FIG. 3 is a partial cross-sectional view showing a relationship between a drainage hole of a motor housing and a drainage pipe in the embodiment according to the present invention.
FIG. 4 is a perspective view of a drain pipe in the embodiment according to the present invention.
FIG. 5 is a diagram showing a state in which a drain pipe provided with a pair of L clips is attached to a motor housing in the embodiment according to the present invention.
[Explanation of symbols]
Reference Signs List 10 vehicle, 12 tire, 13 water, 14 engine, 16 motor for vehicle with drain pipe, 20 drain pipe, 22 drain port, 24 pipe body, 26 water inlet, 30 communication passage, 32 flange, 34 upper surface, 40 motor Housing, 42 outer wall, 50 drain hole, 52 first hole, 54 second hole, 56 third hole, 70 clip member, 72a, 72b L clip, 74a, 74b hook portion, 76a, 76b leg portion.

Claims (5)

A motor for a vehicle including a rotor and a stator, a motor housing including a drainage hole for draining water in the motor, and a drainage pipe,
The drain hole,
A first hole having an opening in an outer wall of the motor housing, and a second hole connected substantially orthogonally at a contact portion of the first hole,
The drain pipe is
A water suction port that can be in close contact with the drain hole at one end, and a pipe body having a water discharge port that communicates with the water suction port;
A pair of L-shaped clips which are fixed at the side ends of the water inlet in axisymmetric manner with respect to the central axis of the pipe body, and have a substantially L-shaped L having a hook portion at a tip and elasticity of a leg portion. A pair of L-clips, wherein the clips are fixed with the bases of the legs upright at the side ends of the water inlet, and the tips of the hooks are arranged so as to face each other outward;
With
The drainage pipe is fixed to the motor housing by closing the ends of the pair of L clips and inserting the ends of the pair of L clips in the second hole, and opening the ends of the pair of L clips in the second hole. A motor for a vehicle with a drain pipe, wherein the drain port of the vehicle is positioned so as to face an outer wall of a component of the vehicle. The vehicle motor with a drain pipe according to claim 1,
A vehicle motor with a drain pipe, wherein a component of the vehicle is an engine of the vehicle. The vehicle motor with a drain pipe according to claim 1,
The pair of L clips have a length of the leg portion equal to a length of the first hole. The vehicle motor with a drain pipe according to claim 1,
The distance between the tips of the pair of hooks when the pair of L clips is opened in the second hole is larger than the diameter of the second hole. The vehicle motor with a drain pipe according to any one of claims 1 to 4,
A vehicle motor with a drain pipe, wherein the interior of the drain pipe has a maze structure.

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