JPH052565U - Vehicle charging generator - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the amount of wind noise generated in the stator of a vehicle charging generator. A nonmagnetic member 15 is filled in a recess left after the armature coil 11 is fitted in the armature coil fitting groove 16 of the alternator 1, and a peripheral surface side of the nonmagnetic member 15 is filled in the stator 10.
The same flat surface was used to prevent wind noise.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to a vehicle charging generator.

[0002]

[Prior art]

  Recently, in response to the increase in battery power consumption due to the increase in electric components on the vehicle side, Generator that can exhibit sufficient power generation capacity even at low engine speeds such as idling In general, an alternator is widely used (for example, actual Kaihei 2-1394). No. 60).

[0003]

[Problems to be Solved by the Invention]

  However, the conventional alternator corresponds to the rotor as shown in FIG. 8, for example. Armature coil for fitting the armature coil 11 to the stator 10 side , Which are formed with a groove (slot recess) 16, , And the armature coils 11, 11 ... , Its upper side is pressed by the arc-shaped leaf springs 30, 30 ... It is only fixed by doing so.

[0004]   Therefore, the inner peripheral surface of the stator 10 is necessarily continuous in the circumferential direction as shown in the figure. A large number (for example, 36) of uneven surfaces are left.

[0005]   As a result, for example, a rotor equipped with a normal cooling fan inside the stator 10 is rotated. When rolled, the rotating wind generated by the rotation of the rotor causes an edge of the uneven portion. There is a problem that a considerable wind noise is generated by crossing over. Above armature If there are 36 ill-fitting grooves 16, 16, ..., The wind noise is of 36th order component. Will be things.

[0006]   Generally, the end portions of the armature coils 11 on both ends of the stator 10 are , The coil is simply wound, so many coil spaces (holes) are formed Therefore, similar wind noise is likely to occur at the coil end portion.

[0007]

[Means for Solving the Problems]

  The invention described in each of claims 1 and 2 of the present application can solve the above problems. It was made for the purpose of and, and is configured as follows.

[0008]   (1) Configuration of the device according to claim 1   The vehicle charging generator according to the first aspect of the present invention is a low-speed generator that is rotated by an engine. , A field coil provided on the rotor, and a predetermined guide on the outer circumference of the rotor. And the armor formed on the inner peripheral surface of the stator. Tumor coil fitting groove and armature fitted in the armature coil fitting groove A vehicle charging generator comprising a coil, wherein the armature coil fitting is provided. The non-magnetic member is filled in the upper part of the armature coil of the groove, and The upper surface is formed to be flush with the inner peripheral surface of the stator.

[0009]   (2) Configuration of the device according to claim 2   A vehicle charging generator according to a second aspect of the present invention is a vehicle charging generator according to the first aspect of the present invention. Based on the configuration of the charging generator, the armature coil of The rotor-side facing surfaces of the coil ends of both ends of the data are covered with a non-magnetic material. To do.

[0010]

[Action]

  (1) Operation of the device according to claim 1   According to the vehicle charging generator of the present invention as set forth in claim 1, the rotor facing the rotor as described above. The armature coil fitting groove on the data side is filled with non-magnetic material to completely close the opening. It is closed and its upper surface is flush with the inner surface of the stator. It

[0011]   Therefore, the inner peripheral surface of the stator has no uneven surface as in the conventional case, and as a result, The amount of wind noise generated during rotation of the motor is greatly reduced.

[0012]   In addition, the non-magnetic material fills the armature coil itself in a secure manner. Therefore, the amount of vibration noise generated is sufficiently reduced.

[0013]   (2) Operation of the device according to claim 2   In the on-vehicle charging generator of the invention as set forth in claim 2, the above-mentioned claim due to its basic constituent parts In addition to the operation similar to that of the vehicle charging generator of the invention described in Item 1, an armature is further provided. The surface of the coil facing the rotor side of the coil end is flatly covered with a non-magnetic material. As a result, the wind will flow smoothly when the rotor is rotating, and wind noise will be reduced more effectively. become.

[0014]

【The invention's effect】

  Therefore, according to the vehicle charging generator of the present invention, the generator noise when the rotor is driven is reduced. It is possible to make it small and highly quiet.

[0015]

【Example】

  1 to 5 show the configuration of a vehicle charging generator according to an embodiment of the present invention. .

[0016]   The vehicle charging generator comprises, for example, an alternator (three-phase AC generator) 1. Has been. The alternator 1 includes a front side (right side in the drawing) and a rear side (left side in the drawing). Are rotatably supported by the first and second bearings 2 and 3, respectively. A rotor shaft 5 having a driving pulley 4 provided at an end thereof, and a rotor shaft 5 fixed to an intermediate portion of the rotor shaft 5. A fixed rotor 6 and a field coil 7 provided on the outer periphery of the rotor 6, Between the rotor 6 of the rotor shaft 5 and the first and second bearings 2 and 3, The cooling fans 8F and 8R provided respectively, and the rear side of the rotor 6 of the rotor shaft 5 And the slip rings 9 provided between the second bearing 3 and The brushes 17, 17 that come into contact with the ring 9, 9 and the outer periphery of the rotor 6, A stator 10 facing the outer peripheral surface of the rotor 6 with a predetermined gap, With the armature coils 11, 11 ... Provided inside the stator 10 It is configured. Further, reference numeral 12 is the stator 10 and the first and second bearings 2. , 3 and brushes 17, 17 and the like, and the casing 12 Supports the front and rear sides with end frames 13 and 14, respectively, as shown Has been done.

[0017]   Further, reference numeral 18 is each of U, V and W of the armature coils 11, 11 ... It is a silicon diode for full-wave rectification connected to the phase terminals.

[0018]   And, the installation portion of the armature coil 11 on the inner peripheral surface of the stator 10 is , For example, as shown in FIGS. 2 and 3, an armature formed on the stator 10 side. A coil fitting groove 16 and a large diameter groove 16a on the bottom side of the armature coil fitting groove 16 An armature coil 11 made up of a large number of coil groups inserted in For example, a synthetic resin filled in the small-diameter groove portion 16b on the upper side of the mature coil fitting groove 16 An upper surface of the non-magnetic member 15 including a non-magnetic member 15 such as oil or silicon rubber Is formed on the same surface (same continuous surface) as the inner peripheral surface of the stator 10. And The armature coil 11 has a bottom-side large-diameter groove 16 formed by the non-magnetic member 15. It is securely filled and fixed in a.

[0019]   Further, in the above state, the front side of the armature coil 11 is On the rotor-side facing surfaces of the rear-side coil end portions 11F and 11R, for example, As shown in FIG. 4, for example, the holes 19, 19 ... Between the coils connected in a three-phase star shape are filled. The same non-magnetic material 20, 20 ... Is formed on the surface. In addition, the non-magnetic member 2 of the coil end portions 11F and 11R Flat surface due to 0, 20 ... For example, as shown in FIG. 5, a non-magnetic paint (or sheet-shaped non-magnetic member) is connected in the circumferential direction. By continuously applying (or sticking) the flat surface 21 continuous in the circumferential direction, You can also do it. This provides more lubrication than the partially filled structure. There is an advantage that a smooth flat surface is formed.

[0020]   Therefore, according to the alternator 1 having the configuration of the present embodiment as described above, Therefore, when the rotor 6 is rotated via the pulley 4, the rotation of the rotor 6 The cooling fans 8F and 8R rotate together with the above.

[0021]   The wind from the cooling fans 8F and 8R is supplied to the rotor 6 and the stator 1. Rotating the rotor from 0 to 0 in the vortex state by rotating the rotor Cooling.

[0022]   In this case, with the conventional structure, the armature coil fitting groove 16 described above is used. Of the armature coil 11 and the coil end portions 11F and 11R of the armature coil 11 between the coils A large wind noise of 36th order component was generated due to the existence of the holes 19, 19 ... However, as described above, in the present embodiment, each of those parts is made of the non-magnetic member 15, 20 ( Since each is sealed to the flat surface by (21), the entire cooling surface is almost flat. It will be ratified, the cooling air will flow very smoothly, Such a loud wind noise will not occur.

[0023]   Here, in closing the armature coil fitting groove 16 portion of the stator 10 (FIG. 3) Wind noise reduction effect and coil end portions 11 of the armature coil 11 Each configuration of wind noise reduction effect by blocking the inter-coil hole portion 19 of F and 11R (FIG. 4) Graphs of other experimental data are shown in FIGS. 6 and 7, for example. It The data of each of these experiments is obtained by individually adopting the above-mentioned configuration. Rotate the rotor 6 of the example alternator 1 in the range of 5000 rpm to 16000 rpm, for example. Rotate and measure the wind noise at 15 cm behind the alternator 1. These data were paired with the measured data of an alternator with a conventional structure measured under similar conditions. It is shown in comparison. As you can see from these measurement data, In the case of the structure of the example, the wind noise is sufficiently reduced in both cases of FIG. 3 and FIG. It is recognized that there is sufficient wind noise countermeasure effect. Therefore, as shown in FIG. (Or FIG. 5) In the present embodiment which employs both structures, the wind noise reduction effect is further improved. Is clearly higher.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an entire structure of a vehicle charging generator according to an embodiment of the present invention.

FIG. 2 is a partially cutaway side view showing a structure of an entire stator portion of the charging generator.

FIG. 3 is a partially enlarged perspective view of the stator portion.

FIG. 4 is a partially enlarged plan view showing a structure of an armature coil end portion of the stator portion.

5 is a partially enlarged plan view showing the structure of another modification of the armature coil end portion shown in FIG. 4;

FIG. 6 is a graph of measurement data showing a wind noise reduction effect by filling a non-magnetic member in an armature coil fitting groove of the vehicle charging generator.

FIG. 7: It is a graph of the measurement data which shows the wind noise reduction effect by the nonmagnetic member filling in the coil end part of the armature coil of the same charging generator.

FIG. 8 is a perspective view showing a structure of an armature coil installation portion of a conventional stator.

[Explanation of symbols]

1 is an alternator, 2 is a first bearing, 3 is a second bearing,
5 is a rotor shaft, 6 is a rotor, 7 is a field coil, 8
F and 8R are cooling fans, 9 is a slip ring, 10 is a stator, 11 is an armature coil, 16 is an armature coil fitting groove, 17 is a brush, and 15 and 20 are non-magnetic members.

Continued front page    (72) Inventor Shin Shigenaga             3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Mazda             Within the corporation (72) Creator Koji Hosokawa             3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Mazda             Within the corporation (72) Creator Kimio Ishida             3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Mazda             Within the corporation

Claims (2)

[Scope of utility model registration request] 1. A rotor rotated by an engine,
A field coil provided on the rotor, a stator arranged with a predetermined gap on the outer circumference of the rotor, an armature coil fitting groove formed on the inner peripheral surface of the stator, and the armature coil fitting groove. A charging generator for a vehicle, comprising: an armature coil fitted to the armature coil; A charging generator for a vehicle, which is formed on the same surface as the above. 2. The charging generator for a vehicle according to claim 1, wherein the rotor-side facing surfaces of the coil end portions on both ends of the stator of the armature coil are covered with a non-magnetic material.