JP2016032309A - Motor support structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To principally allow for suppression or prevention of abnormal noise generation, due to vibration of the motor body.SOLUTION: A motor support structure includes a motor body 5 having shaft holes 7, 8 for installing an output shaft 6 in both end faces, and including a yoke 3 and an end cover 4, and a motor holder 23 capable of housing the motor body 5. The motor holder 23 is provided while being divided into a yoke side holder 32 having a gap S1 in the side face and capable of housing the yoke 3, and an end cover side holder member 34 having a gap S2 in the side face and capable of housing the end cover 4, and a mutually fittable fitting part 35 is provided therebetween. Furthermore, for the bottom 32a of the yoke side holder 32 and the bottom 34a of the end cover side holder member 34, a pair of motor holding parts 38, 39 capable of holding both end faces of the motor body 5, in a direction parallel with the output shaft 6, are provided.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a motor support structure.

  For example, a vehicle such as an automobile is provided with an air conditioner for adjusting the temperature in the passenger compartment. This air conditioner is provided with a motor that drives a fan for supplying air for air conditioning inside the air conditioner body (air conditioning unit or HVAC unit) (see, for example, Patent Document 1). .

  The motor support structure (motor support structure) is as follows.

  That is, as shown in FIG. 7, the motor 1 described above has a bottomed cylindrical yoke portion 3 having an opening 2 on one end side, and an end cover 4 that closes the opening 2 of the yoke portion 3. In addition, a motor main body 5 capable of accommodating motor components (not shown) is provided.

  The motor body 5 includes shaft hole portions 7 and 8 for installing an output shaft 6 as a motor component on both end faces.

  Further, as shown in FIG. 8, a motor accommodating portion 11 that can accommodate the motor main body 5 and a flange-shaped external attachment for attaching the motor main body 5 accommodated in the motor accommodating portion 11 to an external member (not shown). A motor holder 13 having a portion 12 is provided.

  The motor body 5 is housed and held in the motor housing portion 11 of the motor holder 13, and the motor body 5 is supported and fixed by attaching the external mounting portion 12 to an external member (for example, the air blowing case portion of the air conditioner body). Can be done.

  At this time, the motor accommodating portion 11 described above has a bottomed cylindrical shape that accommodates the motor main body 5 from the end cover 4 side (lower end side in the figure). An end portion (upper end portion in the drawing) of the motor housing portion 11 on the yoke portion 3 side is an opening portion 14, and the motor housing portion 11 is formed with an inner diameter larger than the outer diameter of the motor body 5. A plurality of press-fitting ribs 15 extending in a direction parallel to the output shaft 6 (axial direction) are formed on the inner peripheral surface of the portion 11 so as to project at a predetermined interval in the circumferential direction, as shown in FIG. ing. The press-fitting rib 15 has a slightly larger protruding amount than the gap S between the outer peripheral surface of the motor body 5 and the inner peripheral surface of the motor housing portion 11.

  As shown in FIG. 8, a small opening 16 is formed at the bottom of the motor housing 11 at a position facing the shaft hole 8 of the end cover 4. Further, a cooling air intake 17 for taking in the external cooling air W is formed in the lower part of the side surface of the motor housing 11.

JP 2005-73322 A

  However, the above motor support structure has the following problems.

  That is, since the side surface of the motor main body 5 is held in a line contact state by the plurality of press-fitting ribs 15 with respect to the motor housing portion 11, the motor main body that is the largest on the side surface of the yoke portion 3 as shown in FIG. 5 is easily transmitted to the motor holder 13 through the press-fitting ribs 15 (FIGS. 8 and 9), causing abnormal noise in the air conditioner body.

  Further, as shown in FIG. 11, when a component such as a fan 18 is attached to the output shaft 6 by press fitting, in order to receive a load acting on the motor components and the motor body 5 via the output shaft 6, It is necessary to provide a small opening 16 (FIG. 8) at the bottom of the motor housing 11 and to support the opposite end of the output shaft 6 by the receiving member 19 inserted from the small opening 16 side. In addition, after the fan 18 is attached, it is necessary to close the small opening 16 in order to prevent the cooling air W from leaking.

  Furthermore, as shown in FIG. 12, since a gap S corresponding to the height of the press-fitting rib 15 is formed between the inner peripheral surface of the motor accommodating portion 11 and the outer peripheral surface of the motor body, the cooling air intake port 17 The cooling air W that is forcibly taken in passes through the gap S through the opening 14 of the motor housing portion 11 as it is, and is taken into the motor body 5 (yoke portion 3) accordingly. The amount of cooling air W was reduced, and the cooling effect on the motor body 5 was not sufficiently obtained.

  Accordingly, the main object of the present invention is to solve the above-described problems.

In order to solve the above problems, the present invention provides:
A motor body having a bottomed cylindrical yoke portion having an opening on one end side, and an end cover for closing the opening of the yoke portion, and capable of accommodating motor components therein;
A motor housing portion that can house the motor body, and a motor holder having an external attachment portion for attaching the motor body housed in the motor housing portion to an external member,
In the motor support structure in which the motor body is provided with a shaft hole portion where the output shaft as the motor component is installed on both end faces,
The motor holder is
A bottomed cylindrical yoke portion accommodating portion capable of accommodating the yoke portion side portion of the motor main body with a gap portion on a side surface, and a yoke side holder member having the external mounting portion;
The end cover side portion is provided separately with a bottomed cylindrical end cover side holder member having an end cover portion accommodating portion that can accommodate a gap portion on a side surface,
The yoke side holder member and the end cover side holder member have a fitting portion that can be fitted to each other,
Furthermore, a motor holding portion that can hold the end surface of the motor body in the circumferential direction is provided at the bottom of the yoke-side holder member,
At the bottom of the end cover side holder member, another motor holding portion that can hold the end surface on the opposite side of the motor body in the circumferential direction is provided.
Both motor holding portions sandwich and hold both end faces of the motor body in a direction parallel to the output shaft.

  According to the present invention, the above configuration can suppress or prevent the generation of abnormal noise due to vibration of the motor body.

It is a longitudinal cross-sectional view of the motor support structure concerning Example 1 of this Embodiment. It is a longitudinal cross-sectional view of the motor support structure concerning Example 2 of this Embodiment. It is a longitudinal cross-sectional view of the motor support structure concerning the modification of FIG. FIG. 4 is a side view of the motor support structure of FIGS. 2 and 3. It is the perspective view which looked at FIG. 4 from diagonally upward. It is the perspective view which looked at FIG. 4 from diagonally downward. It is a side view which shows the structure of a motor. It is a longitudinal cross-sectional view of the existing motor support structure. It is a cross-sectional view of FIG. It is a figure which shows the vibration of a motor. It is a figure which shows a mode that a fan is press-fitted in the case of FIG. It is a figure which shows cooling of a motor in the case of FIG.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
FIG. 1 is for explaining this embodiment.

  <Configuration> The configuration of this embodiment will be described below.

  For example, a vehicle such as an automobile is provided with an air conditioner for adjusting the temperature in the passenger compartment. The air conditioner is provided with a motor that drives a fan for supplying air for air conditioning inside the air conditioner body (air conditioning unit or HVAC unit).

  More specifically, as shown in FIG. 1, the motor 1 includes a bottomed cylindrical yoke portion 3 having an opening 2 on one end side, and an end cover that closes the opening 2 of the yoke portion 3. 4 and a motor main body 5 (motor casing) capable of accommodating motor components therein.

  The motor body 5 includes shaft hole portions 7 and 8 for installing an output shaft 6 as a motor component on both end surfaces.

  Here, the yoke part 3 is made of metal or the like. The end cover 4 is made of resin or the like. The motor component is the above-described output shaft 6, a bearing for rotatably supporting the output shaft 6, a magnet (electromagnet or permanent magnet) for rotationally driving the output shaft 6, and the like. The magnet is a fixed-side magnet and a rotating-side magnet arranged inside and outside the output shaft 6. Among these, at least a plurality of magnets on the outer peripheral side are attached in the circumferential direction along the inner surface (or inner peripheral surface) of the yoke portion 3. Further, the shaft hole portions 7 and 8 are formed at the center position (or axial center position) of the motor body 5. In addition, in the shaft hole portion 7 on the yoke portion 3 side, the output shaft 6 is disposed so as to extend long outward, and a fan (not shown) is attached to a portion extended to the outside of the output shaft 6. ing. Moreover, about the shaft hole part 8 by the side of the end cover 4, both the case where the output shaft 6 penetrates and the case where it does not penetrate exist.

  Such a support structure (motor support structure) for the motor 1 is as follows. That is, a motor holder 21 that can accommodate the motor main body 5 and a motor holder 23 having an external attachment portion 22 for attaching the motor main body 5 accommodated in the motor accommodation portion 21 to an external member (not shown) are provided. Then, the motor main body 5 is accommodated in the motor accommodating portion 21 of the motor holder 23, and the external attachment portion 22 is attached to an external member so that the motor main body 5 is supported and fixed.

  Here, the motor holder 23 is made of resin. Positioning of the motor body 5 and the motor holder 23 in the circumferential direction between the motor housing portion 21 is performed based on, for example, the position of the power connector connecting terminal portion 24 provided in the motor body 5. The external member is, for example, a blower case portion of an air conditioner body. The external attachment portion 22 is an attachment flange or the like for attachment to the blower case portion.

  In contrast to the basic configuration as described above, this embodiment has the following configuration.

(1) The motor holder 23 is
A bottomed cylindrical yoke portion accommodating portion 31 capable of accommodating a portion on the yoke portion 3 side of the motor body 5 with a gap portion S1 on the side surface, and a yoke side holder member 32 having the external mounting portion 22. When,
A portion of the motor body 5 on the side of the end cover 4 is divided into a bottomed cylindrical end cover side holder member 34 having an end cover portion accommodating portion 33 that can be accommodated with a gap S2 on the side surface. It is done.
The yoke-side holder member 32 and the end cover-side holder member 34 have a fitting portion 35 that can be fitted to each other.
Furthermore, a motor holding portion 38 capable of holding the end surface of the motor main body 5 in the circumferential direction is provided on the bottom portion 32a of the yoke side holder member 32, and
Another motor holding portion 39 that can hold the end surface on the opposite side of the motor main body 5 in the circumferential direction is provided on the bottom 34 a of the end cover side holder member 34.
Then, the both motor holding portions 38 and 39 sandwich and hold both end surfaces of the motor body 5 in a direction (axial direction) parallel to the output shaft 6.

  Here, the yoke part accommodating part 31 and the external attachment part 22 are integrally formed. The yoke portion accommodating portion 31 and the end cover portion accommodating portion 33 do not have press-fitting ribs that come into contact with the motor body 5. The bottom portion 32 a of the yoke-side holder member 32 is an end surface located on the side opposite to the opening of the yoke portion accommodating portion 31. Further, the bottom portion 34 a of the end cover side holder member 34 is an end surface located on the side opposite to the opening portion of the end cover portion accommodating portion 33.

  The fitting portion 35 is for integrally coupling and combining the yoke portion accommodating portion 31 and the end cover portion accommodating portion 33 by fitting. The fitting part 35 is formed between the opening part of the yoke part accommodating part 31 and the opening part of the end cover part accommodating part 33, which are arranged to face each other. In this case, since the outer diameter of the yoke portion accommodating portion 31 and the inner diameter of the end cover portion accommodating portion 33 are substantially the same, both are joined and combined by fitting. At this time, the fitting portion 35 has a sealing function by being slidably fitted. The fitting relationship between the yoke portion accommodating portion 31 and the end cover portion accommodating portion 33 may be reversed.

  The fitting portion 35 is provided with a lock mechanism (not shown) for locking the coupling state between the yoke portion accommodating portion 31 and the end cover portion accommodating portion 33. This locking mechanism can be a claw fixing portion, a fastening fixing portion, or the like.

(2) A small diameter portion 41 for bearing installation is provided around the shaft hole portion 7 of the yoke portion 3.
The motor holding portion 38 provided on the bottom portion 32a of the yoke-side holder member 32 is a small diameter portion holding portion 42 into which the bearing setting small diameter portion 41 of the yoke portion 3 can be fitted.

  Here, the bearing-installing small-diameter portion 41 is literally a protruding portion having a smaller diameter than the yoke portion 3 formed to install a bearing as a motor component. The small-diameter portion holding portion 42 is a substantially cap-like one that can be fitted and attached to the bearing-installing small-diameter portion 41. In this case, the small diameter portion holding portion 42 is configured to hold the motor body 5 by directly contacting at least one of the side surface and the end surface of the bearing installing small diameter portion 41. A shaft hole through which the output shaft 6 passes is formed in the small diameter portion holding portion 42 at a position that matches the shaft hole portion 7.

(3) A magnet position defining step 43 is provided around the outer periphery of the bottom surface of the yoke 3.
The motor holding portion 38 provided on the bottom portion 32a of the yoke side holder member 32 is a stepped portion holding portion 44 into which the magnet position defining stepped portion 43 of the yoke portion 3 can be fitted.

  Here, the step part 43 for defining the magnet position is literally formed to define the installation position (with respect to the direction parallel to the output shaft 6) of the magnet as the motor component with respect to the yoke part 3. It is a portion having a smaller diameter than the outer peripheral portion of the yoke portion 3 and continuing in a step shape. The step portion 43 for defining the magnet position has a larger diameter than the small diameter portion 41 for bearing installation described above. The stepped portion holding portion 44 has a substantially circular shallow dish shape that can be fitted and attached to the magnet position defining stepped portion 43. The step portion holding portion 44 holds the motor body 5 by directly contacting at least one of the side surface and the end surface of the magnet position defining step portion 43.

  Note that either one or both of the small diameter portion holding portion 42 and the stepped portion holding portion 44 as the motor holding portion 38 can be provided. When both the small-diameter portion holding portion 42 and the stepped portion holding portion 44 are provided, it is stable to make one of them a main holding portion and the other as a sub holding portion so as to make a difference in holding force. It is preferable to obtain a held state. In this case, for example, the small diameter portion holding portion 42 is a main holding portion, and the step portion holding portion 44 is a sub holding portion.

(4) The end cover 4 is formed with a short cylindrical protrusion 45 for projecting from the shaft hole 8 outward.
The motor holding portion 39 provided on the bottom 34 a of the end cover side holder member 34 is a protruding portion holding portion 46 into which the short cylindrical protruding portion 45 of the end cover 4 can be fitted.

  Here, the protrusion holding portion 46 has a substantially cylindrical portion that can be fitted and attached to the short cylindrical protrusion 45. The protruding portion holding portion 46 holds the motor body 5 by directly contacting at least one of the side surface and end surface of the short cylindrical protruding portion 45 and the bottom portion of the end cover 4. A shaft hole portion is formed in the protrusion holding portion 46 at a position matching the short cylindrical protrusion 45 extending from the shaft hole portion 8.

(5) A cooling air intake portion 52 and a cooling air extraction portion 53 for passing the cooling air W to the inside of the yoke portion 3 are respectively provided around one end side of the yoke portion 3 and the bottom portion 32a.
A cooling air inlet 54 is provided in the vicinity of the cooling air inlet 52 of the end cover side holder member 34, and a cooling air outlet 55 is provided in the vicinity of the cooling air outlet 53 of the yoke side holder member 32. Is provided.
Furthermore, the portion of the end cover side holder member 34 that is closer to the bottom 34 a than the cooling air intake 54, and the portion of the yoke side holder member 32 that is between the cooling air outlet 55 and the fitting portion 35. Are provided with seal portions 56 and 57, respectively.

  Here, the one end side periphery of the yoke part 3 can include the end cover 4 part. A plurality of cooling air intake portions 52 and cooling air extraction portions 53 can be provided in the circumferential direction with respect to the yoke portion 3 and the end cover 4. Further, one or more cooling air intakes 54 are provided in the circumferential direction with respect to the end cover side holder member 34. A plurality of cooling air discharge ports 55 can be provided in the circumferential direction with respect to the end cover side holder member 34. It is preferable that the cooling air outlet 53 and the cooling air outlet 55 are matched in size, shape, position, and the like.

  The seal portion 56 on the end cover side holder member 34 side may be provided anywhere as long as it is in the above-described position, but preferably the end cover 4 or the short cylindrical protrusion 45 of the protrusion holding portion 46. It is made to form in the contact part (namely, front-end | tip part and inner peripheral surface). In this case, the seal portion 56 seals by direct contact or the like over the entire circumference between the projection holding portion 46 and the bottom 34a of the end cover side holder member 34, the short cylindrical projection 45, or the like. The

  Further, the seal portion 57 on the yoke side holder member 32 side can be formed, for example, at a contact portion of the step portion holding portion 44 with the step portion 43 for defining the magnet position. In this case, the seal portion 57 seals by direct contact over the entire circumference of the step portion holding portion 44 and the magnet position defining step portion 43.

  <Effect> According to this embodiment, the following effects can be obtained.

  (1) The motor support structure accommodates the motor main body 5 in the motor accommodating portion 21 of the motor holder 23, and attaches the external attachment portion 22 to an external member (for example, the air blowing case portion of the air conditioner main body). 5 is supported and fixed.

  At this time, the motor holder 23 is divided into a yoke-side holder member 32 and an end cover-side holder member 34, and the yoke portion receiving portion 31 of the yoke side holder member 32 is made to receive and hold the portion on the yoke portion 3 side of the motor body 5. The end cover 4 side portion of the end cover side holder member 34 is accommodated and held by the end cover 4 side portion, and both are fitted by the fitting portion 35. Thereby, the assembly of the yoke side holder member 32 and the end cover side holder member 34 can be facilitated.

  Furthermore, gap portions S1 and S2 are provided in the yoke-side holder member 32 and the end cover-side holder member 34 so that the entire circumference is not in contact with the side surfaces of the yoke portion 3 and the end cover 4. As a result, it is effective in the gap portions S1 and S2 that the vibration of the motor body 5 that is the largest on the side surface of the yoke portion 3 is directly transmitted to the motor holder 23 through the contact portion with the side surface of the yoke portion 3. Can be prevented. As a result, the generation of abnormal noise due to the vibration of the motor body 5 can be suppressed or prevented.

  It should be noted that the vibration of the motor body 5 is greatest on the side surface of the yoke portion 3 because each magnet attached to the side surface of the yoke portion 3 is magnetically attracted and repelled between the opposing inner side magnets. By repeating alternately, each part of the side surface of the yoke part 3 is slightly reciprocated in the radial direction. When the vibration of the side surface of the yoke part 3 is transmitted to the air conditioner main body via the external mounting part 12 of the motor holder 23, it is enlarged by the air conditioner main body and causes abnormal noise.

  Motor holding portions 38 and 39 for holding both end surfaces of the motor body 5 in a direction parallel to the output shaft 6 are respectively attached to the bottom portion 32a of the yoke side holder member 32 and the bottom portion 34a of the end cover side holder member 34. I prepared. As a result, both motor holding portions 38 and 39 hold only both end surfaces of the motor body 5 so that the side surfaces of the yoke portion 3 (and the end cover 4) are kept in a non-contact state, thereby suppressing vibration transmission. It becomes possible to obtain the holding structure to be made.

  (2) By inserting the yoke part 3 into the yoke part accommodating part 31 of the yoke side holder member 32 and fitting the small diameter part 41 for bearing installation of the yoke part 3 into the small diameter part holding part 42, the motor body 5 ( The end surface of the yoke part 3) can be reliably accommodated and held. Further, the holding structure for the motor main body 5 can be obtained by effectively using the bearing-installing small-diameter portion 41 provided in the yoke portion 3.

  At this time, since the small diameter portion holding portion 42 is fitted to the bearing installing small diameter portion 41, the small diameter portion holding portion 42 can be made small, and the small diameter portion holding portion 42 is made to be the yoke portion 3. It can be installed farthest from the position where the magnet is provided. Therefore, it is possible to make the small-diameter portion holding portion 42 hardly transmit the vibration of the side surface of the yoke portion 3.

  (3) Alternatively, the yoke portion 3 is inserted into the yoke portion accommodating portion 31 of the yoke-side holder member 32, and the step portion holding portion 44 is fitted with the magnet position defining step portion 43 of the yoke portion 3, so that the motor The end surface of the main body 5 (yoke part 3) can be reliably accommodated and held. Further, a holding structure for the motor main body 5 can be obtained by effectively using the magnet position defining step 43 provided in the yoke portion 3.

  At this time, the stepped portion holding portion 44 is fitted with the magnet position defining stepped portion 43 (having a larger diameter than the bearing-installing small-diameter portion 41), thereby increasing the holding force of the stepped portion holding portion 44. Can be. Further, the vibration of the side surface of the yoke part 3 can be made difficult to be transmitted as compared with the case where the side surface of the yoke part 3 is directly held.

  (4) The end cover 4 is inserted into the end cover portion receiving portion 33 of the end cover side holder member 34, and the short cylindrical protrusion 45 provided on the end cover 4 is fitted into the protrusion holding portion 46. Thus, the end surface of the motor main body 5 (end cover 4) can be reliably accommodated and held. At this time, since the protrusion holding part 46 is fitted with the short cylindrical protrusion 45, the protrusion holding part 46 is installed at a position farthest from the yoke part 3 which is a vibration generation source. Can do. Therefore, it is possible to make the protrusion holding portion 46 the least difficult to transmit the vibration of the side surface of the yoke portion 3.

  Further, by fitting the short cylindrical protrusion 45 to the protrusion holding part 46 of the end cover 4, the motor body 5 can be easily centered with respect to the motor holder 13 (end cover side holder member 34). . Further, since the fitting state of the short cylindrical projection 45 with respect to the projection holding portion 46 can be seen from the outside, it can be directly visually confirmed that the motor main body 5 is reliably accommodated in the motor holder 23.

  Further, the projecting portion holding portion 46 of the end cover side holder member 34 is brought into contact with the bottom portion 34 a of the end cover 4 to support the bottom portion 34 a of the end cover 4, so that components such as a fan are press-fitted into the output shaft 6. At this time, the load applied to the motor body 5 and the motor components can be received by the motor holder 23 via the protrusion holding portion 46. Thus, the burden on the motor body 5 and motor components can be reduced.

  (5) Then, the external cooling air W is taken into the motor holder 23 through the cooling air intake 54 of the end cover side holder member 34, and further, the cooling air intake around the one end side of the yoke portion 3 is taken. It is taken into the inside of the yoke part 3 from the insertion part 52 and passes through the inside of the yoke part 3 to the outside from the cooling air outlet part 53 at the bottom part of the yoke part 3 and the cooling air outlet 55 at the bottom part 32a of the yoke side holder member 32. Discharged.

  At this time, the seal portion 56 was provided in a portion closer to the bottom portion 34 a than the cooling air intake port 54 of the end cover side holder member 34. As a result, the cooling air W cannot be emitted from the bottom 34 a of the end cover side holder member 34. Further, a seal portion 57 is provided in a portion between the cooling air discharge port 55 and the fitting portion 35 of the yoke-side holder member 32. As a result, the cooling air W cannot pass through the gaps S1 and S2 between the motor body 5 and the motor holder 23. Accordingly, all the cooling air W taken from the cooling air intake port 54 of the end cover side holder member 34 can be surely passed into the yoke portion 3. As a result, the cooling effect on the motor 1 can be enhanced.

  Further, since the inside and outside of the projection holding portion 46 is sealed by the sealing portion 56 described above, it is unnecessary to fill the shaft hole portion of the projection holding portion 46 later in order to prevent the cooling air W from leaking. be able to.

  <Configuration> The configuration of this embodiment will be described below.

  FIG. 2 shows Example 2 of this embodiment. About the same part as the said Example 1, description is abbreviate | omitted by attaching | subjecting the same code | symbol. However, the configuration, operation, and effect of the portions that are not described here are the descriptions of the second embodiment with the description of the first embodiment.

  In this embodiment, an elastic member 61 is interposed between at least one of the motor holding portions 38 and 39 and the motor main body 5.

  Here, the motor holding part 38 is only the small diameter part holding part 42. The elastic member 61 interposed between the motor holding portions 38 and 39 and the motor main body 5 functions as a vibration proof rubber.

  Further, the elastic member 61 can be interposed also for at least one of the seal portions 56 and 57. The elastic member 61 interposed between the seal portions 56 and 57 functions as a seal rubber.

  In this embodiment, an elastic member 61 is used as an anti-vibration rubber or the like between the small-diameter portion holding portion 42 of the yoke-side holder member 32 and the bearing-installing small-diameter portion 41 of the yoke portion 3.

  Further, an elastic member 61 is used as an anti-vibration rubber and a seal rubber between the protruding portion holding portion 46 of the end cover side holder member 34 and the short cylindrical protruding portion 45 of the end cover 4. With the elastic member 61 interposed, a direct contact state exists between the small-diameter portion holding portion 42 and the bearing-installing small-diameter portion 41 and between the protruding portion holding portion 46 and the short cylindrical protruding portion 45. Instead of disappearing, the elastic member 61 is indirectly contacted (elastically supported).

  FIG. 3 shows a modification of this embodiment.

  In this modification, the motor holding part 38 is only the step part holding part 44. Then, in place of the small-diameter portion holding portion 42 of the yoke-side holder member 32 and the small-diameter portion 41 for installing bearings of the yoke portion 3, the step position holding portion 44 of the yoke-side holder member 32 and the magnet position definition of the yoke portion 3 are defined. An elastic member 61 is provided as an anti-vibration rubber or a seal rubber between the step part 43 for use.

  By providing the elastic member 61 in this way, both the holding function and the sealing function can be obtained at the same time for the portion between the stepped portion holding portion 44 and the magnet position defining stepped portion 43.

  4 to 6 are views showing the outer shape of the motor support structure of FIG. 2 or FIG.

  In these drawings, a duct portion 73 for introducing the cooling air W is installed in the cooling air intake port 54 of the end cover side holder member 34 (end cover portion accommodating portion 33). The end cover side holder member 34 is provided with a connector insertion opening 74 (see FIG. 6) facing the power connector connecting terminal portion 24. In addition, about these structures, the thing of FIG. 1 is similarly equipped.

  <Effect> According to this embodiment, the following effects can be obtained.

  An elastic member 61 is interposed between at least one of the motor holding portions 38 and 39 and the motor body 5. Thereby, the vibration proof performance by the motor holding portions 38 and 39 of the above embodiment can be further improved by the elastic member 61. Therefore, it is possible to more effectively suppress or prevent the generation of abnormal noise due to the vibration of the motor body 5.

  The elastic member 61 is interposed in at least one of the seal portions 56 and 57. Thereby, the sealing performance by the seal portions 56 and 57 of the above embodiment can be further improved by the elastic member 61.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, the embodiments are only examples of the present invention. Therefore, the present invention is not limited to the configuration of the embodiment, and it is a matter of course that the present invention includes any design change within a range not departing from the gist of the present invention. Further, for example, when each embodiment includes a plurality of configurations, it is a matter of course that possible combinations of these configurations are included even if not specifically described. Further, when a plurality of embodiments and modified examples are disclosed as those of the present invention, it is a matter of course that possible combinations of configurations extending over these are included even if not specifically described. It is. Further, the configuration depicted in the drawings is of course included even if not particularly described. Further, when there is a term of “etc.”, it is used in the sense that the equivalent is included. In addition, when there are terms such as “almost”, “about”, “degree”, etc., they are used in the sense that they include those in the range and accuracy recognized by common sense.

2 Opening 3 Yoke 4 End cover 5 Motor body 6 Output shaft (motor component)
7 Shaft hole 8 Shaft hole 21 Motor housing portion 22 External mounting portion 23 Motor holder 31 Yoke portion housing portion 32 York side holder member 32a Bottom portion 33 End cover portion housing portion 34 End cover side holder member 34a Bottom portion 35 Fitting portion 38 Motor holding part 39 Motor holding part 41 Small diameter part for bearing installation 42 Small diameter part holding part 43 Step part for magnet position definition 44 Step part holding part 45 Short cylindrical protrusion 46 Projection part holding part 52 Cooling air intake part 53 Cooling air extraction part 53 Portion 54 Cooling air intake port 55 Cooling air discharge port 56 Seal portion 57 Seal portion 61 Elastic member S1 Gap portion S2 Gap portion W Cooling air

Claims (6)

A motor body having a bottomed cylindrical yoke portion having an opening on one end side, and an end cover for closing the opening of the yoke portion, and capable of accommodating motor components therein;
A motor housing portion that can house the motor body, and a motor holder having an external attachment portion for attaching the motor body housed in the motor housing portion to an external member,
In the motor support structure in which the motor body is provided with a shaft hole portion where the output shaft as the motor component is installed on both end faces,
The motor holder is
A bottomed cylindrical yoke portion accommodating portion capable of accommodating the yoke portion side portion of the motor main body with a gap portion on a side surface, and a yoke side holder member having the external mounting portion;
The end cover side portion is provided separately with a bottomed cylindrical end cover side holder member having an end cover portion accommodating portion that can accommodate a gap portion on a side surface,
The yoke side holder member and the end cover side holder member have a fitting portion that can be fitted to each other,
Furthermore, a motor holding portion that can hold the end surface of the motor body in the circumferential direction is provided at the bottom of the yoke-side holder member,
At the bottom of the end cover side holder member, another motor holding portion that can hold the end surface on the opposite side of the motor body in the circumferential direction is provided.
A motor support structure, wherein both motor holding portions sandwich and hold both end faces of the motor body in a direction parallel to the output shaft. The motor support structure according to claim 1,
A small-diameter portion for bearing installation is provided around the shaft hole portion of the yoke portion,
The motor support structure is characterized in that the motor holding portion provided at the bottom of the yoke side holder member is a small diameter portion holding portion into which a small diameter portion for bearing installation of the yoke portion can be fitted. The motor support structure according to claim 1 or 2,
A step for defining magnet position is provided around the outer periphery of the bottom surface of the yoke part,
The motor support structure, wherein the motor holding portion provided at the bottom of the yoke side holder member is a stepped portion holding portion into which the magnet position defining stepped portion of the yoke portion can be fitted. The motor support structure according to any one of claims 1 to 3,
The end cover is formed with a short cylindrical projection protruding from the shaft hole toward the outside,
The motor support structure, wherein the motor holding portion provided at the bottom of the end cover side holder member is a protrusion holding portion into which the short cylindrical protrusion of the end cover can be fitted. The motor support structure according to any one of claims 1 to 4,
A cooling air intake part and a cooling air extraction part for passing cooling air into the inside of the yoke part are provided at one end side periphery and the bottom part of the yoke part, respectively.
A cooling air inlet is provided in the vicinity of the cooling air inlet of the end cover side holder member, and a cooling air outlet is provided in the vicinity of the cooling air outlet of the yoke side holder member,
Further, a seal portion is provided in a portion of the end cover side holder member on the bottom side of the cooling air intake port, and a portion between the cooling air discharge port of the yoke side holder member and the fitting portion, respectively. A motor support structure characterized by comprising: The motor support structure according to any one of claims 1 to 5,
A motor support structure, wherein an elastic member is interposed between at least one of the motor holding portions and the motor body.