JP2014207729A - Rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary electric machine capable of reducing a noise of system sound generated by an exciting force resulting from a rotary electric machine, due to construction of a vibration insulation system that makes vibration generated at actuation be less likely to be transmitted to a system.SOLUTION: Provided is a rotary electric machine M1 that comprises a main body part comprising an armature 1, a yoke housing 2, and an end housing 3, and a motor holder 4. A bearing arrangement part 21 where a bearing R1 supporting one end part of a rotation shaft 11 is arranged is formed on a bottom face on an opposite side to a motive power output side in the yoke housing 2. An outer surface of the bearing arrangement part 21 is coated by the motor holder 4. A bearing arrangement part bottom face 21A configuring the bottom face of the bearing arrangement part 21 is arranged at an opposite side end part to the motive power output side, of the yoke housing 2. A block-like base-isolated member 5 in which an attenuation material and a base material are laminated in an axial direction is interposed between the bearing arrangement part bottom face 21A, and a part opposed to the bearing arrangement part bottom face 21A, of an inner wall surface of the motor holder 4.

Description

  The present invention relates to a rotating electrical machine, and more particularly to a rotating electrical machine configured to reduce system sound generated when the rotating electrical machine becomes an excitation force.

In recent years, reduction of noise in rotating electrical machines has become a problem.
In order to solve such problems, efforts have been made to reduce static and dynamic imbalances, and to reduce vibration transmission forces such as vibration suppression and vibration isolation in the motor mounting part to the system. Yes.
In particular, various techniques have been proposed for suppressing vibration inside the rotating electrical machine (see, for example, Patent Document 1).

Patent Document 1 discloses a rotating electrical machine that can stabilize vibration and suppress vibration.
According to the technique of Patent Document 1, the transmission of vibration is suppressed by floating the yoke with respect to the motor holder.
That is, three elastic protrusions are formed on the outer surface of the yoke, and the elastic protrusions are stored in the recesses formed on the inner peripheral surface of the motor holder so that the yoke is attached to the motor holder by the elastic protrusions. It can be held in a floating state.
In other words, by using floating technology, which is a technology that minimizes the contact area between the yoke and the motor holder (peripheral system), it is possible to concentrate the vibration transmitting section and to reduce the vibration damping material such as elastic protrusions and structural rigidity. Therefore, the transmitted vibration can be reduced.

JP2013-013244A

However, when performing floating as in Patent Document 1, the vibration reduction efficiency at the low frequency (several hundreds Hz or less) is low due to the damping characteristics of the vibration isolator, and the noise is low compared to the frequency band of 1 kHz or higher. There was a problem that it was not converted (see FIG. 14).
Such a problem becomes remarkable particularly in a small and light motor.

  An object of the present invention is to solve the above-mentioned problems, and a system in which a rotating electrical machine is generated as an excitation force by constructing a vibration isolation system that makes it difficult to transmit vibration generated during operation to the system. An object of the present invention is to provide a rotating electrical machine that achieves low noise.

  According to the rotating electric machine according to the present invention, the above-described problem is that a rotating shaft, an armature core fixed to the rotating shaft, a commutator fixed to the output side of the rotating shaft, and a brush device that supplies power to the commutator; An armature, a yoke housing that covers the armature, and an end housing that covers the output side end of the yoke housing and in which the commutator and the brush device are disposed; A yoke cover that covers the opposite side of the main body from the power output side and has an opening on the power output side; and a motor holder that includes a system mounting portion that is a mounting portion to an external system. In the rotating electrical machine, a bearing disposition portion in which a bearing for supporting one end portion of the rotating shaft is disposed is formed on the bottom surface of the yoke housing opposite to the power output side. Part The side surface is covered with the motor holder, and the bottom surface of the bearing disposing portion constituting the bottom surface of the bearing disposing portion is disposed at the end opposite to the power output side of the yoke housing. A block-shaped seismic isolation member in which a damping material and a base material are laminated in the axial direction between a bottom surface of the installation portion and a portion of the inner wall surface of the motor holder facing the bottom surface of the bearing arrangement portion. It is solved by intervening.

With this configuration, the vibration generated by the rotation of the armature is absorbed by the seismic isolation member disposed on the side opposite to the power output side (assumed to be disposed below). This vibration force can be effectively prevented from propagating to the motor holder.
In addition, this seismic isolation member is configured as a single member (block-shaped member) in which the damping material and the base material are laminated in the axial direction (axial direction of the rotation center axis of the armature). In a rotating electrical machine that is arranged perpendicular to the axis (the axis is arranged in the vertical direction), vibration force can be absorbed effectively.

At this time, it is preferable that a retaining member is sandwiched between the periphery of the opening of the yoke housing and the periphery of the opening of the motor holder.
With such a configuration, the retaining member disposed on the power output side serves as a fulcrum, and the seismic isolation member disposed on the side opposite to the power output side serves as a point of action. As a result, the seismic isolation effect is improved.

At this time, as in claim 3, the bearing arrangement portion is formed so as to protrude toward the side opposite to the power output side, and the seismic isolation member is fitted with the yoke that fits the bearing arrangement portion. It is preferable that a side fitted recess is formed and the bearing arrangement portion is fitted and fixed to the yoke side fitted recess.
By being configured in this way, the bearing arrangement portion can be received reliably, so that the seismic isolation effect is improved.
That is, the bearing arrangement portion is a place where the bearing is arranged, and a bearing supporting the rotating shaft is arranged in this portion.
For this reason, according to this invention, the holding part by a seismic isolation member can be made to adjoin to the vibration generation | occurrence | production part (bearing arrangement | positioning part) by the collision with a rotating shaft and a bearing, and a seismic isolation effect can be acquired effectively. .
In addition, the holding of the armature can be ensured and the assembling accuracy can also be improved.

According to a fourth aspect of the present invention, the yoke-side fitted recess may be formed of the damping material.
If comprised in this way, it becomes possible to hold | maintain a bearing arrangement | positioning part with a damping material, Therefore A seismic isolation function improves more.

Further, according to a fifth aspect of the present invention, the thickness of the yoke-side fitted recess may be configured to be smaller than the thickness of other portions.
If comprised in this way, while being able to show a seismic isolation effect effectively, the seismic isolation effect can be controlled by changing the thickness of the yoke side fitting recessed part.

Still further, as in claim 6, one or more grooves extending in the circumferential direction may be formed on the side surface of the seismic isolation member.
If comprised in this way, while being able to show a seismic isolation effect effectively, the diameter of a seismic isolation member can be made small.

According to the rotating electric machine according to the present invention, the above-described problem is that a rotating shaft, an armature core fixed to the rotating shaft, a commutator fixed to the output side of the rotating shaft, and a brush device that supplies power to the commutator; An armature, a yoke housing that covers the armature, and an end housing that covers the output side end of the yoke housing and in which the commutator and the brush device are disposed; A rotary electric machine comprising: a yoke cover that covers a side opposite to the power output side of the main body; and a motor holder that includes a system mounting portion that is a mounting portion to an external system. The bottom surface opposite to the power output side is formed with a bearing disposition portion on which a bearing for supporting one end of the rotating shaft is disposed, and the bearing disposition portion is disposed on the power output side of the yoke housing. When A bearing disposition portion bottom surface disposed on the opposite end, and a bearing disposition side surface that rises from the bearing disposition bottom surface to the power output side and forms a space in which the bearing is disposed. The outer surface of the bearing disposition portion is covered with the motor holder, and the side surface of the bearing disposition portion and the portion of the inner wall surface of the motor holder facing the bearing disposition portion side surface In the meantime, a block-shaped seismic isolation member in which a damping material and a base material are laminated in the circumferential direction is interposed.
If comprised in this way, while having the seismic isolation effect of Claim 1 similarly, it becomes possible to receive the dead weight of an armature effectively in an axial direction.
In addition, the seismic isolation member is configured as a single member (block-shaped member) in which the damping material and the base material are laminated in the circumferential direction (the direction perpendicular to the axial direction and the circumferential direction with respect to the axial center). Therefore, in particular, in a rotating electric machine that is arranged horizontally in the axis (the axis is arranged in the horizontal direction), the vibration force can be effectively absorbed.

At this time, as described in claim 8, the seismic isolation member is formed in a portion between the side surface of the bearing arrangement portion and a portion of the inner wall surface of the motor holder facing the side surface of the bearing arrangement portion. It may be arranged.
As a specific application, as in claim 9, the part preferably has a central angle in the range of 60 ° to 180 ° around the side surface of the bearing arrangement portion.

According to the present invention, vibration generated by the rotation of the armature can be absorbed by the seismic isolation member disposed on the side opposite to the power output side.
For this reason, it is possible to effectively prevent the vibration from being propagated to the motor holder.
Further, this seismic isolation member has a vertical axis when the damping material and the base material are laminated in the axial direction (axial direction of the rotation center axis of the armature) and configured as a single member (block-shaped member). Can be effectively absorbed in the rotating electrical machine (the axis is arranged in the vertical direction), and the damping material and the base material are in the circumferential direction (the direction perpendicular to the axial direction and the axis center In the rotating electric machine arranged horizontally in the axis (the axis is arranged in the horizontal direction), the vibration force is effectively obtained. Can be absorbed.
As described above, according to the present invention, by constructing a vibration isolation system that makes it difficult to transmit vibrations generated during operation to the system, it is possible to reduce the noise of the system sound generated by the rotating electrical machine as an excitation force. be able to.

It is a schematic structure explanatory view of the first motor concerning a first embodiment of the present invention. It is a perspective view which shows the 1st seismic isolation member which concerns on 1st embodiment of this invention. It is function explanatory drawing of the 1st seismic isolation member which concerns on 1st embodiment of this invention. It is schematic structure explanatory drawing of the 2nd motor which concerns on 2nd embodiment of this invention. It is a perspective view which shows the 2nd seismic isolation member which concerns on 2nd embodiment of this invention. It is a schematic explanatory drawing of the 3rd motor which concerns on 3rd embodiment of this invention. It is a perspective view which shows the 3rd seismic isolation member which concerns on 3rd embodiment of this invention. It is a schematic explanatory drawing of the 4th motor which concerns on 4th embodiment of this invention. It is a perspective view which shows the 4th seismic isolation member which concerns on 4th embodiment of this invention. It is a schematic explanatory drawing of the 5th motor which concerns on 5th embodiment of this invention. It is a perspective view which shows the 5th seismic isolation member which concerns on 5th embodiment of this invention. It is explanatory drawing which shows schematic structure of the 6th motor which concerns on 6th embodiment of this invention, and the arrangement | positioning state of a 6th seismic isolation member. It is the top view and perspective view which show the 6th seismic isolation member which concerns on 6th embodiment of this invention. It is explanatory drawing which shows a damping characteristic and its experimental system.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Note that the configuration described below does not limit the present invention and can be variously modified within the scope of the gist of the present invention.
In the present embodiment, a motor (particularly, a low-noise system sound generated by a rotating electrical machine as an excitation force is realized by constructing a vibration isolation system that makes it difficult to transmit vibration generated during operation to the system (particularly, Small motor).

1 to 3 show a first embodiment of the present invention. FIG. 1 is an explanatory diagram of a schematic configuration of a first motor, FIG. 2 is a perspective view showing a first seismic isolation member, and FIG. It is function explanatory drawing of a seismic isolation member.
4 and 5 show a second embodiment of the present invention. FIG. 4 is an explanatory diagram of a schematic configuration of the second motor. FIG. 5 is a perspective view showing the second seismic isolation member. FIG. 7 shows a third embodiment of the present invention, FIG. 6 is a schematic configuration explanatory view of a third motor, and FIG. 7 is a perspective view showing a third seismic isolation member.
8 and 9 show a fourth embodiment of the present invention. FIG. 8 is a schematic diagram of the fourth motor, FIG. 9 is a perspective view showing the fourth seismic isolation member, and FIG. FIGS. 11 and 11 show a fifth embodiment of the present invention, FIG. 10 is a schematic configuration explanatory view of a fifth motor, and FIG. 11 is a perspective view showing a fifth seismic isolation member.
12 and 13 show a sixth embodiment of the present invention. FIG. 12 is an explanatory view showing the schematic configuration of the sixth motor and the arrangement state of the sixth seismic isolation member. FIG. It is the top view and perspective view which show a 6th seismic isolation member.

(First embodiment)
An example of the configuration of the first motor M1 (rotating electric machine) according to the present embodiment will be briefly described with reference to FIGS.
The first motor M1 according to the present embodiment employs the configuration of a small DC motor as a basic configuration.
As shown in FIG. 1, the first motor M <b> 1 according to the present embodiment includes an armature 1, a yoke housing 2 that covers the armature 1 and has a magnet J fixed to an inner wall surface thereof, and the yoke housing 2. An end housing 3 arranged to close the output side opening, a motor holder 4 attached to an external system and supporting the first motor M1, and a first seismic isolation member 5 are configured as main components.
The armature 1, the yoke housing 2, and the end housing 3 constitute a “main part” in the claims.

  In the present embodiment, the armature 1 is fixed to the output side of the shaft 11, the shaft 11 as a rotating shaft serving as an output shaft, the core portion 12 around which the winding K is wound and fixed to the shaft 11. The commutator L and the brush device N attached to the outer periphery of the commutator L on the output side of the shaft 11 are configured.

The shaft 11 is rotatably supported via bearings R1 and R2 disposed in the yoke housing 2 and the end housing 3.
A core portion 12 is fixed to the shaft 11, and a magnet J is arranged around the core portion 12 so as to surround the outer periphery of the core portion 12.
The magnet J is a permanent magnet and is fixed to the inner wall surface of the yoke housing 2.
A commutator L is also fixed on the output side of the shaft 11.

The core part 12 according to the present embodiment includes an armature core main body and a winding K wound around the armature core main body.
In addition, the armature core part main body which concerns on this embodiment is a laminated core formed by laminating | stacking a several core sheet | seat in the axial direction.

The commutator L according to the present embodiment is a cylindrical member that rotates integrally with the shaft 11 in one direction.
The commutator L is configured such that the segment of the commutator L that abuts on the brush body (provided in the brush device N) is switched with rotation, and the direction of the current flowing through the winding K is switched by this configuration. .
The brush device N is disposed in the end housing 3 and has a role of passing a current through the coil K through the commutator L.

As described above, the yoke housing 2 is a cup-shaped member that covers the core portion 12 of the armature 3 and is provided with an opening on the output side. Magnet J is stuck so as to face each other.
In addition, a bearing R1 is disposed at the end opposite to the output side (in the center of the cup-shaped bottom surface, and one end of the shaft 11 is pivotally supported by the bearing R1.
A portion where the bearing R1 is disposed is referred to as a “bearing disposed portion 21”.
The bearing arrangement portion 21 is a cup-shaped portion, and includes a circular bearing arrangement portion bottom surface 21A and a bearing arrangement portion that rises in the axial direction from the circumference of the bearing arrangement portion bottom surface 21A toward the output side. And a side surface 21B.
A yoke hole 121 is bored in the central portion of the bottom surface 21A of the bearing arrangement portion.
Then, a bearing R1 in which the shaft 11 is penetrated (supported) in the bearing arrangement portion 21 is arranged.

Further, the end housing 3 is a member disposed so as to cover an opening formed on the output side of the yoke housing 2, and a bearing R2 is disposed at the output side end portion, and the shaft 11 is a shaft. It is supported.
A hole-like commutator arrangement portion is formed in the central portion of the end surface portion on the side close to the core portion 12, and a brush device N is arranged on the peripheral portion of the commutator arrangement portion. .
Therefore, the end housing 3 according to the present embodiment functions as a bearing holder and also functions as a brush holder.
When the commutator L is disposed in the commutator arrangement portion, the end surface of the brush body disposed in the brush device N is configured to be in pressure contact with the segment aligned with the outer surface of the commutator L. Yes.

The motor holder 4 according to the present embodiment includes a bottom face circular cup-shaped yoke covering portion 41 that covers the yoke housing 2 so as to surround the yoke housing 2, and a system that extends outward from the peripheral edge on the opening side of the yoke covering portion 41. It has a system mounting blade 42 as a mounting portion.
In addition, the bottom portion of the yoke covering portion 41 is formed with a bottom cup portion 141 having a bottom portion formed in a circular cup shape.
From the inner wall of the bottom surface of the bottom cup 141, a seismic isolation member mounting portion 41A is formed that protrudes inward (in the axial direction output side) into a bottom circular cup shape.
A holder hole 141a is formed at the center of the bottom surface portion of the seismic isolation member mounting portion 41A.

The motor holder 4 is attached so as to cover the outer surface of the yoke housing 2 with the retaining rubber Q sandwiched between the inner end of the opening end and the outer end of the yoke housing 2.
In addition, a gap is formed between the outer surface of the bearing arrangement portion bottom surface 21A of the yoke housing 2 and the bottom inner surface of the seismic isolation member mounting portion 41A. The first seismic isolation member 5 is disposed on the seismic member disposition portion S ”.
The first seismic isolation member 5 is disposed so as to fit into the seismic isolation member disposition portion S (so as to fill this gap).

Next, the first seismic isolation member 5 will be described with reference to FIG.
FIG. 2B is a perspective view of FIG. 2A viewed from the X direction.
The first seismic isolation member 5 according to the present embodiment is a substantially columnar member, and a holder-side mating recess 52 hollowed into a bottom circular cup shape is formed at the center of one bottom surface. .
The holder-side mating recess 52 is configured to match the shape of the seismic isolation member mounting portion 41A constituting the motor holder 4, and the holder-side mating recess 52 is fitted to the seismic isolation member mounting portion 41A. Combined.
And the through-hole 51 is formed so that the center part of the both bottom surfaces of this 1st seismic isolation member 5 may be penetrated.

As shown in FIG. 2, the first seismic isolation member 5 is formed by laminating a damping material 5A and a base material 5B.
That is, the annular damping material 5A and the base material 5B are laminated in the axial direction to form the first seismic isolation member 5.
In the present embodiment, three damping materials A and two base materials 5B are alternately stacked one by one.
Since it is comprised in this way, while being able to ensure rigidity with the base material 5B, the seismic isolation effect can be ensured with the damping material 5B.
Further, by laminating the base material 5B and the damping material, it is possible to effectively follow the displacement, the first seismic isolation member 5 is prevented from being broken, and the displacement can be absorbed effectively.

The first seismic isolation member 5 is attached to the motor holder 4 by fitting the holder-side fitting recessed portion 52 to the seismic isolation member mounting portion 41A, and is attached to the outer side of the bearing arrangement portion bottom surface 21A of the yoke housing 2. It fits in the seismic isolation member arrangement | positioning part S which is a gap | interval formed between a side surface and the bottom inner surface of the motor holder 4, and becomes a structure which fills this gap | interval.
At this time, the yoke hole 121, the through hole 51, and the holder hole 141a are configured to be a communication through hole U that extends in the axial direction through communication.
Note that any material may be used as the damping material 5A as long as it can be attenuated, but rubber, silicon, gel, or the like is effectively used.

The function of the first seismic isolation member 5 according to this embodiment will be described with reference to FIG.
FIG. 3 shows a diagram when the armature 1 is vibrated (displaced) by a distance t1 in the Y direction.
In this case, the armature 1 is displaced by the distance t1 in the Y direction together with the yoke housing 2 and the end housing 3.
Then, following this, the first seismic isolation member 5 moves in the Y direction. As described above, since the holder-side fitted recess 52 is fitted to the seismic isolation member mounting portion 41A, the fitting portion Cannot move, and only the side in contact with the bottom surface 21A of the bearing arrangement portion follows and displaces.
At this time, the displacement can be absorbed by the communication through hole U, and the first seismic isolation member 5 is prevented from being broken.

Thus, according to the present embodiment, the first seismic isolation member 5 can effectively absorb the displacement width.
Therefore, the brush holder 4 is not displaced, and only the yoke holder 2 (and the armature 1 and the end housing 3) is displaced (swinged by reaction), and the motor holder 4 is not affected by the armature 1. Become.
For this reason, it is possible to prevent the influence of vibration from being transmitted to the system to which the brush holder 4 is attached, and it is also possible to eliminate the generation of noise at the same time.
Further, by interposing the retaining rubber Q which is a vibration-proof rubber, it is possible to effectively hold the yoke housing 2 and the components included therein.

(Second embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS.
In addition, the same structure as 1st embodiment attaches | subjects the same code | symbol while avoiding duplication of description.
The basic configuration of the second motor M2 of the second embodiment is the same as that of the first embodiment, and the second seismic isolation member 205 is used instead of the first seismic isolation member 5.

The second seismic isolation member 205 according to the present embodiment is a substantially cylindrical member, and a holder side fitted portion 52 is formed on one bottom surface in the same manner as the first embodiment, and the other bottom surface. A second yoke-side fitted recess 252 that is hollowed out in a circular cup shape on the bottom is formed in the center portion of the.
One holder-side fitted recess 52 is configured to match the shape of the seismic isolation member mounting portion 41 </ b> A constituting the motor holder 4. The holder-side fitting recessed portion 52 is fitted to the seismic isolation member mounting portion 41A, and the configuration is the same as that of the first embodiment.
In the present embodiment, a second yoke-side fitted recess 252 made of the damping material 5A is formed on the other bottom surface, and the second yoke-side fitted recess 252 is formed on the bearing arrangement portion 21. It is comprised so that it may match with the outer shape of.
And the bearing arrangement | positioning part 21 is fitted by this 2nd yoke side fitting recessed part 252. FIG.

Thus, in the second seismic isolation member 205 according to the present embodiment, one bottom surface side is fixed to the bottom surface of the motor holder 4 as in the first embodiment, and the other bottom surface side is the yoke housing 2. It will be fixed to the bottom.
In addition, it is the same as that of 1st embodiment that the communicating through-hole U is formed in a center part.
As described above, in the present embodiment, in the first embodiment, the first seismic isolation member 5 includes the outer surface of the bearing arrangement portion bottom surface 21A of the yoke housing 2 and the bottom surface of the seismic isolation member mounting portion 41A. In the present embodiment, the second yoke-side fitted recess is further formed on the other bottom surface. In 252, the bearing arrangement portion 21 formed in the yoke housing 2 is further fitted and fixed.
Thereby, a seismic isolation function can be more reliably exhibited.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIGS.
In addition, the structure similar to other embodiment is attached with the same code | symbol while avoiding duplication of description.
The basic configuration of the third motor M3 of the third embodiment is the same as that of the first embodiment, and a third seismic isolation member 305 is used instead of the first seismic isolation member 5.

The third seismic isolation member 305 according to the present embodiment is a substantially cylindrical member, and is similar in shape to the second seismic isolation member 205.
That is, the holder side fitting portion 52 is formed on one bottom surface in the same manner as in the first embodiment, and the third yoke side covering that is hollowed out in the shape of a bottom circular cup is formed at the center portion of the other bottom surface. A fitting recess 352 is formed.
One holder-side fitted recess 52 is configured to match the shape of the seismic isolation member mounting portion 41 </ b> A constituting the motor holder 4. The holder-side fitting recessed portion 52 is fitted to the seismic isolation member mounting portion 41A, and the configuration is the same as that of the first embodiment.
In this embodiment, a third yoke-side fitted recess 352 is also formed on the other bottom surface, and this third yoke-side fitted recess 352 matches the outer shape of the bearing arrangement portion 21. It is configured as follows.
The bearing arrangement portion 21 is fitted into the third yoke-side fitting recessed portion 352.

However, in the present embodiment, the base 5B is not used on the other bottom surface side (the output side bottom surface side) where the third yoke-side fitted recess 352 is formed, and only the damping material 5A is used. It is configured.
That is, the vicinity of the third yoke-side fitted recess 352 in which the bearing arrangement portion 21 is fitted is configured only by the damping material 5A.
Therefore, in the third seismic isolation member 305 according to this embodiment, one bottom surface side is fixed to the bottom surface of the motor holder 4 and the other bottom surface side is fixed to the bottom surface of the yoke housing 2 as in the first embodiment. It will be fixed.
In addition, it is the same as that of 1st embodiment that the communicating through-hole U is formed in a center part.
As described above, in the present embodiment, the bearing arrangement portion 21 formed in the yoke housing 2 is further fitted and fixed in the third yoke-side fitted recess 352 further formed on the other bottom surface. By configuring the third fitting recess 352 portion with the damping material 5A, it is possible to effectively attenuate the displacement portion and more reliably perform the seismic isolation function.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIGS.
In addition, the same structure as 1st embodiment attaches | subjects the same code | symbol while avoiding duplication of description.
The fourth motor M4 of the fourth embodiment has the same basic configuration as that of the first embodiment, and uses a fourth seismic isolation member 405 instead of the first seismic isolation member 5.

The fourth seismic isolation member 405 according to the present embodiment is a member based on a substantially cylindrical shape, and the holder side fitted portion 52 is formed on one bottom surface as in the first embodiment.
In the present embodiment, a fourth yoke-side fitted recess 452 that is formed to project in a cylindrical shape (projected in the axial direction) is formed at the center of the other bottom surface.
One holder-side fitted recess 52 is configured to match the shape of the seismic isolation member mounting portion 41 </ b> A constituting the motor holder 4. The holder-side fitting recessed portion 52 is fitted to the seismic isolation member mounting portion 41A, and the configuration is the same as that of the first embodiment.
In this embodiment, a fourth yoke-side fitted recess 452 is formed on the other bottom surface, and the inner shape of the fourth yoke-side fitted recess 452 is the outer shape of the bearing arrangement portion 21. Configured to match.
And the bearing arrangement | positioning part 21 is fitted by this 4th yoke side to-be-fitted recessed part 452.

Thus, in the fourth seismic isolation member 405 according to the present embodiment, one bottom surface side is fixed to the bottom surface of the motor holder 4 as in the first embodiment, and the other bottom surface side is the yoke housing 2. It will be fixed to the bottom.
In addition, it is the same as that of 1st embodiment that the communicating through-hole U is formed in a center part.
As described above, in this embodiment, the bearing arrangement portion 21 formed in the yoke housing 2 is further fitted and fixed in the fourth yoke-side fitted recess 452 that is formed to protrude from the other bottom surface. It was.
Thereby, a seismic isolation function can be more reliably exhibited.
Moreover, the seismic isolation effect can be controlled by changing the thickness t2 of the fourth seismic isolation member 405.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIGS.
In addition, the same structure as 1st embodiment attaches | subjects the same code | symbol while avoiding duplication of description.
The fifth motor M5 of the fifth embodiment has the same basic configuration as that of the first embodiment, and uses a fifth seismic isolation member 505 instead of the first seismic isolation member 5.

The fifth seismic isolation member 505 according to the present embodiment is a member having a substantially cylindrical shape as a base, and a holder side fitted portion 52 is formed on one bottom surface as in the first embodiment.
In the present embodiment, a fifth yoke-side fitted recess 552 that is formed to project in a cylindrical shape (projected in the axial direction) is formed at the center of the other bottom surface.
However, the difference from the fourth seismic isolation member 405 is that the diameter φ1 of the connecting portion W (cylindrical portion) between the holder-side fitted portion 52 and the fifth yoke-side fitted recess 552 is: That is, it is configured to be smaller than the diameter φ2 of the fitted portion 52 and the diameter φ3 of the fifth yoke-side fitted recess 552.

One holder-side fitted recess 52 is configured to match the shape of the seismic isolation member mounting portion 41 </ b> A constituting the motor holder 4. The holder-side fitting recessed portion 52 is fitted to the seismic isolation member mounting portion 41A, and the configuration is the same as that of the first embodiment.
In the present embodiment, a fifth yoke-side fitted recess 552 is formed on the other side, and the internal shape of the fifth yoke-side fitted recess 552 matches the outer shape of the bearing arrangement portion 21. It is configured to
The bearing arrangement portion 21 is fitted into the fifth yoke-side fitted recess 552.

Thus, in the fifth seismic isolation member 505 according to this embodiment, one bottom surface side is fixed to the bottom surface of the motor holder 4 and the other bottom surface side is the yoke housing 2 as in the first embodiment. It will be fixed to the bottom.
In addition, it is the same as that of 1st embodiment that the communicating through-hole U is formed in the center partial axial direction.
Moreover, in this embodiment, the groove | channel V extended in the circumferential direction can be created in the side surface (around the connection part W) of the 5th seismic isolation member 505 by taking the structure of the connection part W, and this groove | channel V Therefore, a sufficient seismic isolation effect can be provided only by the damping material 5A.

  As described above, in the present embodiment, the bearing arrangement portion 21 formed in the yoke housing 2 is further fitted and fixed in the fifth yoke-side fitted recess 552 formed to protrude from the other bottom surface. In addition, due to the presence of the connecting portion R, it is possible to provide a sufficient seismic isolation effect only with the damping material 5A, and thereby it is possible to more reliably perform the seismic isolation function.

(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described with reference to FIGS.
In addition, the same structure as 1st embodiment attaches | subjects the same code | symbol while avoiding duplication of description.
The basic structure of the sixth motor M6 of the sixth embodiment is the same as that of the first embodiment, and a sixth seismic isolation member 605 is used instead of the first seismic isolation member 5.

The sixth seismic isolation member 605 according to this embodiment is a block that is disposed so as to fill a part between the outer peripheral wall of the seismic isolation member mounting portion 41 </ b> A and the bearing disposition portion 21 and the inner wall of the bottom cup portion 141. Shaped member.
This is because, as shown in FIG. 12B, the entire area between the outer peripheral wall of the seismic isolation member mounting portion 41A and the bearing arrangement portion 21 and the inner wall of the bottom cup portion 141 (ie, 360 ° as the central angle). Is configured so as to occupy a predetermined central angle of the portion.
The predetermined center angle (θ) is preferably set between 60 ° and 180 °.

As shown in FIG. 13, the seismic isolation member 605 according to this embodiment is different in the stacking direction of the damping member 5 </ b> A and the base material 5 </ b> B from the first to fifth embodiments.
That is, in the first embodiment to the fifth embodiment, the damping member 5A and the base material 5B are laminated in the axial direction, but in the present embodiment, the damping member 5A and the base material 5B are circumferential. Laminated toward.
Thus, in the present embodiment, the sixth seismic isolation member 605 can have a sufficient seismic isolation effect by receiving its own weight.

1. Armature,
11 .. Shaft (rotary shaft), 12.
2. Yoke housing,
21 .. Bearing arrangement portion, 21A .. Bearing arrangement portion bottom surface, 21B... Bearing arrangement portion side surface,
121 .. yoke hole,
3. End housing,
4 ..Motor holder, 41 ..Yoke cover, 42 ..System mounting blade,
141 .. bottom cup part, 41A .. seismic isolation member mounting part,
141a .. holder hole,
5, 205, 305, 405, 505, 605 .. First to sixth seismic isolation members,
5A ... Damping material, 5B ... Base material,
51 .. Through hole, 52 .. Holder side mating recess,
252, 352, 452, 552... Second to fifth yoke side fitting recess (yoke side fitting recess),
J ... Magnet, K ... Winding, L ... Commutator,
M1, M2, M3, M4, M5, M6 .. First to sixth motors,
N ・ ・ Brush device, R1, R2 ・ ・ Bearing, Q ・ ・ Retaining rubber (retaining member),
S ... Seismic isolation member placement part, U ... Communication through hole, V ... Groove, W ... Connection part

Claims (9)

An armature having a rotating shaft, an armature core fixed to the rotating shaft, a commutator fixed to the output side of the rotating shaft, and a brush device for supplying power to the commutator, and a yoke housing that covers the armature And an end housing that covers the output side end portion of the yoke housing and in which the commutator and the brush device are disposed, and a main body portion,
A motor holder including a yoke covering portion that covers the side opposite to the power output side of the main body portion and has an opening on the power output side; and a system attachment portion that is an attachment portion to an external system;
A rotating electric machine with
In the yoke housing, on the bottom surface opposite to the power output side, there is formed a bearing arrangement portion in which a bearing for supporting one end of the rotating shaft is arranged,
The outer surface of the bearing disposition portion is covered with the motor holder, and the bottom surface of the bearing disposition portion constituting the bottom surface of the bearing disposition portion is disposed at the end opposite to the power output side of the yoke housing. Has been
Between the bottom surface of the bearing arrangement portion and the portion of the inner wall surface of the motor holder that faces the bottom surface of the bearing arrangement portion, a block material in which an attenuation material and a base material are laminated in the axial direction is formed. A rotating electric machine characterized in that a seismic isolation member is interposed.   2. The rotating electrical machine according to claim 1, wherein a retaining member is sandwiched between the periphery of the opening of the yoke housing and the periphery of the opening of the motor holder. The bearing arrangement portion is formed to protrude toward the side opposite to the power output side,
The seismic isolation member is formed with a yoke-side fitted recess for fitting the bearing arrangement portion,
The rotating electrical machine according to claim 1, wherein the bearing arrangement portion is fitted and fixed to the yoke-side fitting recessed portion.   The rotating electrical machine according to claim 2, wherein the yoke-side fitted recess is formed of the damping material.   5. The rotating electrical machine according to claim 2, wherein a thickness of the yoke-side mating concave portion is configured to be smaller than a thickness of other portions.   6. The rotating electrical machine according to claim 1, wherein at least one groove extending in a circumferential direction is formed on a side surface of the seismic isolation member. An armature having a rotating shaft, an armature core fixed to the rotating shaft, a commutator fixed to the output side of the rotating shaft, and a brush device for supplying power to the commutator, and a yoke housing that covers the armature And an end housing that covers the output side end portion of the yoke housing and in which the commutator and the brush device are disposed, and a main body portion,
A motor holder including a yoke covering portion that covers a side opposite to the power output side of the main body portion, and a system attachment portion that is an attachment portion to an external system;
A rotating electric machine with
In the yoke housing, on the bottom surface opposite to the power output side, there is formed a bearing arrangement portion in which a bearing for supporting one end of the rotating shaft is arranged,
The bearing arrangement portion has a bottom surface of the bearing arrangement portion arranged at the end opposite to the power output side of the yoke housing, and the bearing rises from the bottom surface of the bearing arrangement portion to the power output side. A bearing arrangement portion side surface that forms a space, and
The outer surface of the bearing arrangement portion is covered with the motor holder, and between the side surface of the bearing arrangement portion and the portion of the inner wall surface of the motor holder that faces the side surface of the bearing arrangement portion. Is a rotating electrical machine characterized in that a block-shaped seismic isolation member in which a damping material and a base material are laminated in the circumferential direction is interposed.   The seismic isolation member is arranged in a part between the bearing arrangement portion side surface and a portion of the inner surface of the motor holder facing the bearing arrangement portion side surface. The rotating electrical machine according to claim 7. 9. The rotating electrical machine according to claim 8, wherein the part has a central angle in a range of 60 ° to 180 ° around a side surface of the bearing arrangement portion.

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