WO2015004700A1 - 回転電機 - Google Patents
回転電機 Download PDFInfo
- Publication number
- WO2015004700A1 WO2015004700A1 PCT/JP2013/004311 JP2013004311W WO2015004700A1 WO 2015004700 A1 WO2015004700 A1 WO 2015004700A1 JP 2013004311 W JP2013004311 W JP 2013004311W WO 2015004700 A1 WO2015004700 A1 WO 2015004700A1
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- WO
- WIPO (PCT)
- Prior art keywords
- yoke
- grommet
- recess
- housing
- flange
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/15—Mounting arrangements for bearing-shields or end plates
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
Definitions
- the present invention relates to a rotating electrical machine having a seal structure, for example, a motor for driving a power steering mechanism.
- a relatively small motor is mounted to drive an oil pump, a power steering mechanism, and the like.
- motors mounted on automobiles are subject to sand and dust on the road surface when traveling, and often have rainwater in rainy weather, so there is a concern that these foreign objects may enter the motor and deteriorate the service life. Is done.
- a motor described in Patent Document 1 has been proposed as a motor having a structure (seal structure) that prevents foreign matters such as water and dust from entering the motor.
- the motor described in Patent Document 1 has a cylindrical case main body (yoke) having one end opened and a flange provided on the outer periphery of the open end, and an end cover (housing) that has a hollow portion and is in contact with the flange. )
- the end cover is provided with a recess opened on the outer side in the radial direction of the motor case and on the flange side, and the end surface of the end cover contacting the flange is provided in the circumferential direction of the case body.
- the sealing resin is formed in the recess of the end cover and the inside of the sealing groove with the opening to the case body side closed by the flange fastened to the end cover. The sealing resin seals the gap between the flange and the end cover.
- the filled sealing resin fills the end cover and the flange.
- the gap between the end cover and the flange is filled by filling the minute recesses formed on the opposite surface of the screw and the gap between the two to prevent foreign objects from entering the motor.
- the seal structure to prevent is enabled.
- Patent Document 1 seals between the flange (case main body) and the end cover by a filled sealing resin.
- the sealing resin may leak out of the motor from the contact surface, and the leaked sealing resin adheres to the end cover or flange. As a result, the appearance may be impaired. Further, when the sealing resin adheres during the assembling work, a work for removing the sealing resin is required separately, which causes a problem that workability is lowered.
- An object of the present invention is to solve the above-described problems.
- a rotating electrical machine having a seal structure adhesion of a sealing resin during assembly work is reduced and the appearance is reduced.
- the object is to obtain a rotating electrical machine that does not lose.
- one end is open, a flange is provided on the outer periphery of the open end, a cylindrical yoke having a through-hole through which a fastening member passes, and an outer periphery of the open end.
- the housing is fastened to the yoke by the fastening member, and has a recess on the outer periphery on the yoke side that opens radially outward and on the yoke side, and is fitted into the recess to fit the housing.
- FIG. 2 is a perspective view showing a state in which the yoke 1 is placed on the housing 2 of FIG.
- FIG. 3 is an enlarged view of the vicinity of an extension 2f of the housing 2 of FIG.
- FIG. 6 is a view showing a modification of the yoke 1 of FIG. 1, and is an enlarged view of the vicinity of an extension portion 2 f of the housing 2.
- FIG. 6 is a view showing a modification of the grommet 3 in FIG. 1, and is a partial cross-sectional view showing the vicinity of the end face of the grommet 3 on the yoke 1 side.
- FIG. 6 is a view showing another modification of the grommet 3 in FIG. 1, and is a partial cross-sectional view showing the vicinity of the end face of the grommet 3 on the yoke 1 side.
- FIG. 6 is a view showing still another modified example of the grommet 3 in FIG. 1, and is a partial cross-sectional view showing the vicinity of the end face of the grommet 3 on the yoke 1 side.
- It is the disassembled perspective view which showed the yoke 1, the housing 12, and the grommet 13 used with the rotary electric machine which concerns on Embodiment 2 of this invention. It is an enlarged view of the contact surface 13c vicinity of the grommet 13 of FIG.
- FIG. 1 is an exploded perspective view showing a yoke 1 used in a motor 100 according to Embodiment 1 of the present invention, a housing 2, and a grommet 3.
- FIG. 2 is a view showing a yoke on the housing 2 to which the grommet 3 is attached.
- FIG. 3 is a perspective view showing a state in which the yoke 1 and the housing 2 are fastened together with FIG.
- a motor 100 that is a rotating electrical machine has a cylindrical yoke 1 that is open at one end and provided with a flange 1b on the outer periphery of the open end 1a, and a housing that is in contact with the flange 1b and fastened to the yoke 1. 2 and a grommet 3 through which a connecting wire 5 such as a lead wire led out from a motor main body accommodated in the housing 2 passes.
- a plurality of through holes 1c through which screws 6 (fastening members) penetrate in the axial direction are formed in the flange 1b.
- a recess 2a that opens in two directions, ie, the outer side in the radial direction of the housing 2 and the yoke 1 side.
- a plurality of fastening holes 2b to which screws 6 are fastened are formed at positions corresponding to the through holes 1c formed in the flange 1b when the yoke 1 and the housing 2 are fastened.
- One of the fastening holes 2b1 is formed on one circumferential side surface 2c (left side in FIG. 3) of the recess 2a. That is, the screw 6a (fastening member) is located on one circumferential side surface 2c of the recess 2a.
- the other circumferential side surface 2d (right side in FIG. 3) of the recess 2a has a tray-shaped extension 2f (rib portion) in which the sealing resin 4 leaking out of the motor 100 from the contact surface 2e with the flange 1b accumulates. ) Is provided (see FIG. 3).
- the extending portion 2 f extends in the circumferential direction from the other circumferential side surface 2 d of the recess 2 a and is formed integrally with the housing 2.
- FIG. 3 shows the case where the extending portion 2f is in the shape of a tray so that the sealing resin 4 leaking from the contact surface 2e is collected, the present invention is not limited to this case, and the recess 2a of the housing 2 is shown.
- the outer circumferential side surface 2d of the yoke 1 and the flange 1b of the yoke 1 only need to cover the outer periphery of the contact surface 2e, cover the outer periphery of the contact surface 2e, and there is no bottom portion of the tray, It may have a shape penetrating in the axial direction.
- the grommet 3 is made of an insulating material having elasticity such as rubber, and is integrally formed with the O-ring portion 3a as shown in FIG.
- the O-ring portion 3a is disposed radially inward of the end surface of the housing 2 on the yoke 1 side.
- the grommet 3 is formed with a plurality of (two in the illustrated example) through-holes 3b through which the connection lines 5 penetrate, and the connection lines 5 are drawn out of the motor 100 through the through-holes 3b.
- a contact surface 3c for contacting the flange 1b is formed on the end surface of the grommet 3 on the yoke 1 side, and a sealing resin 4 is filled inside the contact surface 3c in the radial direction so that the flange 1b and the grommet 3 are in contact with each other. , The portion of the contact surface 3c filled with the sealing resin 4 (in the radial direction of the contact surface 3c) is sealed.
- the end face of the grommet 3 on the yoke 1 side is provided with a recess 3d that is recessed outward in the radial direction from the contact surface 3c filled with the sealing resin 4.
- a part of the recess 3d shown in FIG. 3 is covered with the flange 1b. Further, the sealing resin 4 leaking from the contact surface 3c is accumulated in the recess 3d.
- the grommet 3 is attached to the housing 2 together with a brush holder (not shown).
- the molten sealing resin 4 is applied to the inside in the radial direction of the contact surface 3 c of the grommet 3 (in the vicinity of the O-ring 3 a in the illustrated example), and the flange 1 b and the grommet 3
- the contact surface 3c is filled with resin.
- the yoke 1 is placed on the housing 2, the flange 1 b is brought into contact with the contact surface 3 c of the housing 2 and the grommet 3, and the yoke 1 and the housing 2 are connected by screws 6.
- the motor 100 is assembled by fastening.
- the space between the yoke 1 and the grommet 3 is sealed with the sealing resin 4 filled in the contact surface 3 c of the grommet 3.
- the yoke 1 and the housing 2 are sealed by an O-ring 3 a formed integrally with the grommet 3.
- the case where the space between the yoke 1 and the housing 2 is sealed by the O-ring 3a has been described.
- the sealing resin 4 may also be applied to the contact surface (including the contact surface 2e between the flange 1c and the other circumferential side surface 2d of the recess 2a). In this case, both the yoke 1 and the housing 2 and between the yoke 1 and the grommet 3 are sealed with the sealing resin 4.
- sealing oil 4 it is preferable to use a material having good adhesion and water resistance, for example, a silicone resin, which is required as a sealing structure.
- the motor 100 (rotary electric machine) according to the first embodiment of the present invention is in contact with the flange 1b and the cylindrical yoke 1 having one end opened and the flange 1b provided on the outer periphery of the open end.
- the screw 6 (fastening member) is fastened to the yoke 1 and is fitted in the recess 2a with a housing 2 having a recess 2a that opens radially outward and on the yoke 1 side on the outer periphery of the yoke 1 side.
- the grommet 3 attached to the housing 2 and the sealing resin 4 filled in the contact surface 3c between the flange 1b and the grommet 3 are provided, and one circumferential side surface 2c (left side in FIG.
- the screw 6a is positioned, and the other circumferential side surface 2d (right side in FIG. 3) of the recess 2a has an extended portion 2f (rib portion) covering the outer periphery of the contact surface 2e with the yoke 1.
- the grommet 3 is attached to the jing 2, the sealing resin 4 is filled in the contact surface 3 c between the flange 1 b and the grommet 3, the yoke 1 is placed on the housing 2, and the flange 1 b is attached to the housing 2 and the grommet.
- the sealing resin 4 When the yoke 1 is attached to the housing 2 by being brought into contact with the abutment surface 3c and being fastened with the screws 6, the sealing resin 4 is radially formed on the end surface (abutment surface 3c) of the grommet 3.
- the seal resin 4 leaks to the outside of the motor 100 from the contact surface 2e.
- the leaked seal resin 4 is covered by the extending portion 2f.
- the adhesion of the sealing resin 4 is reduced. Further, since the leaked sealing resin 4 does not adhere to other parts, it is possible to provide a rotating electrical machine that does not impair the appearance.
- the sealing resin 4 flows out uniformly in the radial direction or the circumferential direction without being biased to a specific radial position or a specific circumferential position.
- the extension 2f that covers the outer periphery of the contact surface 2e between the other circumferential side surface 2d of 2a and the yoke 1 is opposite to one circumferential side surface 2c of the recess 2a in which the screw 6a that is a fastening member is located.
- the fastening force of the screw 6a acts by being fastened by the screw 6a.
- most of the sealing resin 4 filled in the contact surface 3c is indicated by a thick arrow in FIG.
- the sealing resin 4 that has flowed from the one circumferential side surface 2c to the opposite (other) circumferential side surface 2d and leaked from the contact surface 2e is transferred to the (other) circumferential side surface 2d. Since it is covered by the provided extending portion 2f, most of the sealing resin 4 leaking out of the motor 100 can be reliably covered.
- the extending portion 2f covering the outer periphery of the contact surface 2e is formed integrally with the housing 2, only the shape change of the mold when the housing 2 is molded is performed.
- rotation without causing a significant increase in cost and reducing the adhesion of the sealing resin 4 during the assembly operation and without impairing the appearance.
- An electric machine can be provided.
- FIG. 3 showed about the case where the extension part extended in the circumferential direction from the center vicinity of the radial direction of the other circumferential direction side surface 2d of the recessed part 2a was shown, it is limited to this case.
- the extending portion only needs to cover the outer periphery of the contact surface 2e between the other circumferential side surface 2d of the recess 2a and the yoke 1 and extend in the circumferential direction from the other circumferential side surface 2d. Since the contact surface 2e is located on the flange 1c side (inner diameter side) of the other circumferential side surface of the recess, for example, it extends in the circumferential direction from the outer diameter side of the other circumferential side surface of the recess. You may provide an extension part in this.
- the sealing resin 4 leaking from the contact surface 2e is accumulated in the extending portion 2f provided on the other circumferential side surface 2d of the recess 2a of the housing 2.
- the present invention is not limited to this, and any configuration that covers the outer periphery of the contact surface between the other circumferential side surface 2d of the housing 2 and the yoke 1 can be used.
- the sealing resin leaks from the contact surface between the yoke and the housing, so that the yoke and the housing are securely sealed.
- the sealing oil 4 has leaked into the extending portion 2f, so that the yoke 1 and the housing 2 Can be confirmed to be securely sealed.
- 3 is formed so as to extend in the circumferential direction, the operator touches the extension 2f from the side of the yoke 1 in the axial direction, so that the contact is made during the assembly work. As shown in FIG.
- the sealing resin 4 leaking from the surface 2e may adhere to the outer periphery of the flange 1b of the yoke 1 so as to cover the yoke 1 side end surface of the extending portion 2f.
- the projecting portion 1d projects as a cover for the extending portion 2f, so that the projecting portion 2f is not touched from the axial direction.
- the adhesion of the resin 4 for use is further reduced. Further, since the leaked sealing resin 4 does not adhere to other parts, it is possible to provide a rotating electrical machine that does not impair the appearance.
- the end face on the yoke 1 side of the grommet 3 is recessed outward in the radial direction from the contact face 3c filled with the sealing resin 4. Since the recess 3d is provided, the flange 1b is brought into contact with the contact surface 3c of the grommet 3 in a state where the grommet 3 is attached to the housing 2 and the sealing resin 4 is filled in the contact surface 3c.
- the sealing resin 4 leaks from the contact surface 3c to the outside of the motor 100. Since the leaked sealing resin 4 flows into the recess 3d, the sealing resin 4 is sealed during assembly. The adhesion of the resin 4 is reduced.
- the leaked sealing resin 4 does not adhere to other parts, it is possible to provide a rotating electrical machine that does not impair the appearance. Further, since the radially inner side of the recess 3d is covered with the flange 1b, if the sealing resin 4 leaked to the outside of the motor 100 from the contact surface 3c of the grommet 3 is small, the leaked sealing resin 4 As such, since it accumulates in the space formed by the flange 1b and the recess 3d, it is possible to provide a rotating electrical machine that does not further impair the appearance.
- the leaked sealing resin 4 is Since the concave portion 3d is accumulated in the radially outer portion of the flange 1b and the concave portion 3d is viewed from the axial yoke 1 side, it can be confirmed that the sealing resin 4 is accumulated in the concave portion 3d. It can be confirmed that the grommet 3 and the grommet 3 are securely sealed.
- a recess 3 d is provided that is recessed radially outward from the contact surface 3 c of the grommet 3, and a part of the recess 3 d is covered by the flange 1 b on the radially inner side of the flange 1 b and remains.
- the present invention is not limited to this case, and a recess that is recessed outward in the radial direction from the contact surface 3c filled with the sealing resin 4 is provided. Any configuration may be used, and the entire recess 3d1 may be provided so as to be positioned radially outward from the flange 1b (see FIG. 5), or the entire recess 3d2 may be positioned radially inward from the flange 1b.
- the structure (refer FIG. 6) covered with the flange 1b may be sufficient.
- the leaked sealing resin 4 accumulates in the recess 3d1, and the recess 3d1 is axially disposed.
- the sealing resin 4 is accumulated in the recess 3 d 1, and therefore it can be confirmed that the yoke 1 and the grommet 3 are securely sealed.
- FIG. 5 shows that the sealing resin 4 is accumulated in the recess 3 d 1, and therefore it can be confirmed that the yoke 1 and the grommet 3 are securely sealed.
- the end face of the grommet 3 on the yoke 1 side is provided with a recess 3d that is recessed radially outward from the contact surface 3c filled with the sealing resin 4.
- a convex portion 3e extending in the axial direction is provided on the outer side of the flange 1b provided on the outer periphery of the opening end of the yoke 1 and extending in the axial direction. May be.
- the sealing resin 4 leaks from the contact surface 3c to the outside of the motor 100, but the leaked sealing resin 4 is stored in a gap formed by the yoke 1 side end surface of the grommet 3 and the convex portion 3e. Therefore, the adhesion of the sealing resin 4 during the assembly operation is reduced. Further, since the leaked sealing resin 4 does not adhere to other parts, it is possible to provide a rotating electrical machine that does not impair the appearance.
- FIG. 8 is an exploded perspective view of the motor 200 according to Embodiment 2 of the present invention
- FIG. 9 is an enlarged view of the vicinity of the grommet 13.
- a motor 200 that is a rotating electrical machine has a cylindrical yoke 1 that is open at one end and provided with a flange 1 b on the outer periphery of the open end 1 a, and a housing that is in contact with the flange 1 b and fastened to the yoke 1. 12 and a grommet 13 through which a connecting wire 5 such as a lead wire led out from the main body of the motor 200 accommodated in the housing 12 passes.
- a plurality of through holes 1c through which screws 6 (fastening members) penetrate in the axial direction are formed in the flange 1b. Further, the flange 1 b is in contact with the contact surface 12 e of the housing 12.
- a recess 12a that opens in two directions, the radially outer side of the housing 12 and the yoke 1 side, and one circumferential side surface 12c (left side in FIG. ) Has a screw 6a (fastening member).
- a plurality of fastening holes 12b to which the screws 6 are fastened are formed at positions corresponding to the through holes 1c formed in the flange 1b when the yoke 1 and the housing 12 are fastened.
- the grommet 13 is made of an insulating material having elasticity such as rubber and is integrally formed with the O-ring portion 13a as shown in FIG.
- the O-ring portion 13a is disposed radially inward of the end face of the housing 12 on the yoke 1 side.
- the grommet 13 is formed with a plurality of (two in the illustrated example) through-holes 13b through which the connection lines 5 penetrate, and the connection lines 5 are drawn out of the motor 200 through the through-holes 13b.
- a contact surface 13c that contacts the flange 1b is formed on the end surface of the grommet 13 on the yoke 1 side, and radially inward of this contact surface 13c (in the illustrated example, in the vicinity of the O-ring 13a).
- the sealing resin 4 is filled, and the contact surface 13c is sealed by the flange 1b and the grommet 13 contacting each other.
- a recess 13d that is recessed radially outward from the contact surface 13c is provided on the end surface of the grommet 13 on the yoke 1 side and radially outward from the contact surface 13c.
- the sealing resin 4 leaking from the contact surface 13c between the flange 1b and the grommet 13 is accumulated, as in the recess 3d shown in FIG.
- the grommet 13 is a circumferential side surface of the grommet 13 and is a circumferential side surface that is fitted to the other circumferential side surface 12d of the recess 12a of the housing 12, that is, the other circumferential side surface 13f of the grommet 13 (right side in FIG. 9).
- the extending portion 13 g extends in the circumferential direction from the other circumferential side surface 13 f of the grommet 13 and is formed integrally with the grommet 13.
- the outer circumferential side surface 12d of the yoke 1 and the flange 1b of the yoke 1 only need to cover the outer periphery of the contact surface 12e, cover the outer periphery of the contact surface 12e, and there is no bottom portion of the tray, It may have a shape penetrating in the axial direction.
- the motor 200 (rotary electric machine) according to the second embodiment of the present invention is in contact with the flange 1b and the cylindrical yoke 1 having one end opened and the flange 1b provided on the outer periphery of the open end.
- the housing 12 is fastened to the yoke 1 by screws 6 (fastening members), and is fitted into the recess 12a with a housing 12 having recesses 12a that are open radially outward and on the yoke 1 side on the outer periphery on the yoke 1 side.
- the grommet 13 attached to the housing 12 and the sealing resin 4 filled in the contact surface 13c between the flange 1b and the grommet 13 are provided, and one circumferential side surface 12c of the recess 12a (the left side in FIG. 9). ), The screw 6a is located, and the other circumferential side surface 12d (right side in FIG. 9) of the recess 12a has an extending portion 13g (rib portion) covering the outer periphery of the contact surface 12e with the yoke 1.
- the yoke 1 Since the grommet 13 is attached to the housing 12 and the contact surface 13c between the flange 1b and the grommet 13 is filled with the sealing resin 4, the yoke 1 is placed on the housing 12, The flange 1b is brought into contact with the contact surface 13c of the housing 12 and the grommet 13 and fastened with screws 6, so that the sealing resin 4 is attached to the end face (contact of the grommet 13 when the yoke 1 is attached to the housing 12. Surface 13c) flows in the radial and circumferential directions, and a part of the sealing resin 4 leaks out of the motor 200 from the contact surface 12e. The leaked sealing resin 4 is covered by the extending portion 13g. Therefore, the adhesion of the sealing resin 4 during assembly work is reduced. Further, since the leaked sealing resin 4 does not adhere to other parts, it is possible to provide a rotating electrical machine that does not impair the appearance.
- the yoke 1 is placed on the housing 12, and the flange 1 b just contacts the contact surface 13 c of the grommet 13.
- the sealing resin 4 flows out uniformly in the radial direction or the circumferential direction without being biased to the specific radial position or the specific circumferential position.
- the extending portion 13g that covers the outer periphery of the contact surface 12e between the other circumferential side surface 12d of 12a and the yoke 1 is opposite to one circumferential side surface 12c of the recess 12a where the screw 6a that is the fastening member is located.
- the fastening force of the screw 6a acts by being fastened by the screw 6a.
- the part is screw 6a
- the sealing resin 4 that flows from the (one) circumferential side surface 12c of the concavity 12a on the connected side into the (other) circumferential side surface 12d on the opposite side and leaks from the contact surface 12e, Since it is covered with the extending portion 13g provided on the (other) circumferential side surface 12d, most of the sealing resin 4 leaking out of the motor 100 can be reliably covered.
- the extension 2f covering the outer periphery of the contact surface 2e is formed integrally with the housing 2, and the shape of the housing 2 and the position of the fastening hole 2b are determined for each motor specification.
- the extension covering the outer periphery of the contact surface 12e is a concern because the mold change for each mold is necessary, and there is a concern about cost increase. Since the portion 13g is integrally formed with the grommet 13, even if the shape of the housing 12 and the position of the fastening hole 12b are different for each motor specification, only the shape of the grommet 13 is changed for each motor. Since the common grommet 13 can be used, an increase in cost can be suppressed and a plurality of motor specifications can be handled.
- the sealing resin 4 leaking from the contact surface 12e is accumulated in the extending portion 13g extending in the circumferential direction from the other circumferential side surface 13f of the grommet 13.
- the present invention is not limited to this, and any configuration that covers the outer periphery of the contact surface between the other circumferential side surface 12d of the housing 12 and the yoke 1 can be used.
- An extending portion extending in the circumferential direction along the housing 12 is provided from the inner diameter side of the circumferential side surface 13f of the housing 12, and the extending portion is in contact with the other circumferential side surface 12d of the housing 12 and the yoke 1.
- a convex portion extending toward the yoke 1 in the axial direction may be formed so as to cover the outer periphery of the surface.
- the sealing resin 4 leaks from the contact surface 12e to the outside of the motor 200.
- the leaking sealing resin 4 is Since it is stored in the gap formed by the other circumferential side surface 12d of the housing 12 and the extending part and the convex part of the grommet 13, the adhesion of the sealing resin 4 during assembly work is reduced. Further, since the leaked sealing resin 4 does not adhere to other parts, it is possible to provide a rotating electrical machine that does not impair the appearance.
- the sealing resin leaks from the contact surface between the yoke and the housing, so that the yoke and the housing are securely sealed.
- the sealing oil 4 has leaked into the extending portion 13g. Therefore, regardless of the presence or absence of the extending portion 13g, the yoke 1 and the housing 12 Can be confirmed to be securely sealed.
- the end face on the yoke 1 side of the grommet 13 is recessed outward in the radial direction from the contact face 13 c filled with the sealing resin 4. Since the recess 13d is provided, the flange 1b is brought into contact with the contact surface 13c of the grommet 13 in a state where the grommet 13 is attached to the housing 12 and the sealing resin 4 is filled in the contact surface 13c.
- the sealing resin 4 leaks from the contact surface 13c to the outside of the motor 200. Since the leaked sealing resin 4 flows into the recess 13d, the sealing resin 4 is sealed during assembly. The adhesion of the resin 4 is reduced.
- the leaked sealing resin 4 does not adhere to other parts, it is possible to provide a rotating electrical machine that does not impair the appearance. Further, since the inner side in the radial direction of the recess 13d is covered with the flange 1b, if the sealing resin 4 leaked to the outside of the motor 200 from the contact surface 13c of the grommet 13 is small, the leaked sealing resin 4 As such, since it accumulates in the space formed by the flange 1b and the recess 13d, it is possible to provide a rotating electrical machine that does not further impair the appearance.
- the leaked sealing resin 4 is Since the concave portion 13d is accumulated in the radially outer portion of the flange 1b and the concave portion 13d is viewed from the axial yoke 1 side, it can be confirmed that the sealing resin 4 is accumulated in the concave portion 13d. It can be confirmed that the grommet 13 and the grommet 13 are securely sealed.
- the housing 2 is provided on the rib portions provided on the other circumferential side surfaces 2d and 12d of the recesses 2a and 12a of the housings 2 and 12 and covering the outer periphery of the contact surface with the yoke 1.
- the other side of the recess 12a is shown as the extension portion 2f extending in the circumferential direction from the other circumferential side surface 2d of the recess 2a.
- the present invention is not limited to these cases, and protrudes radially outward from the yoke 1.
- An L-shaped rib portion extending toward the housing 2 in the axial direction may be provided so as to cover the outer periphery of the contact surface between the (other) circumferential side surface 2d of the housing 2 and the yoke 1. Even in this case, since the sealing resin 4 leaking out of the motor is covered with the rib portion, the adhesion of the sealing resin 4 during the assembly operation is reduced. Further, since the leaked sealing resin 4 does not adhere to other parts, it is possible to provide a rotating electrical machine that does not impair the appearance.
- the general motor 100 has been described as the rotating electrical machine.
- the present invention is not limited to this motor, and other rotating electrical machines such as a brushed motor, a brushless motor, and an alternator may be used. May be.
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Abstract
Description
特許文献1に記載のモータは、一端が開口し、開口端の外周にフランジが設けられた筒状のケース本体(ヨーク)と、中空部を有し、フランジに当接されたエンドカバー(ハウジング)とからなるモータケースを備えたモータであって、エンドカバーにモータケースの径方向の外側及びフランジ側に開口した凹部が設けられ、フランジに当接するエンドカバーの端面に、ケース本体の周方向に伸びて両端が凹部内に開口したシール用溝部が形成され、エンドカバーに締結されたフランジによりケース本体側への開口部が閉じられたエンドカバーの凹部及びシール用溝部の内部にシール用樹脂が充填されて、このシール用樹脂によりフランジとエンドカバーとの間がシールされているものであり、充填されたシール用樹脂がエンドカバー及びフランジの対向面に形成されている微細な凹部や両者の突き合わせ部に形成されている微細な隙間を埋めて、エンドカバーとフランジとの間のシールを図ることで、モータ内部への異物侵入を防止するシール構造を可能にしている。
以下、本発明の実施の形態1について図に基づいて説明するが、各図において、同一、または相当部材、部位については同一符号を付して説明する。
図1は、本発明の実施の形態1に係るモータ100で用いるヨーク1と、ハウジング2とグロメット3とを示した分解斜視図、図2は、グロメット3が取り付けられたハウジング2の上にヨーク1を載せてヨーク1とハウジング2とを締結した状態を示した斜視図、図3は、図2のハウジング2の延出部2f付近の拡大図である。
また、グロメット3は、ハウジング2の凹部2a内に圧縮された状態で嵌合することで、ハウジング2に取り付けられる。グロメット3には、接続線5が貫通する複数(図示の例では2個)の貫通孔3bが形成されており、接続線5は貫通孔3bを通してモータ100外部に引き出されている。
グロメット3のヨーク1側の端面には、フランジ1bを当接させる当接面3cが形成されており、この当接面3cの径方向内側にシール用樹脂4が充填され、フランジ1bとグロメット3とが当接することで、当接面3cのうち、シール用樹脂4が充填されている部分(当接面3cの径方向内側)はシールされる。そして、グロメット3のヨーク1側の端面には、シール用樹脂4が充填された当接面3cより径方向外側に向かって凹んだ凹部3dが設けられている。図3に示した凹部3dは、その一部(径方向内側)がフランジ1bにより覆われている。また、当接面3cから漏れ出たシール用樹脂4は、この凹部3dに溜まるようになっている。
グロメット3をハウジング2に取り付けた後、溶融したシール用樹脂4をグロメット3の当接面3cの径方向内側(図示の例では、Oリング3a近傍)に塗布して、フランジ1bとグロメット3との当接面3cに樹脂を充填する作業を行う。最後に、図2に示すように、ハウジング2の上にヨーク1を載せて、フランジ1bをハウジング2及びグロメット3の当接面3cに当接させて、ヨーク1とハウジング2とをネジ6により締結することで、モータ100が組み立てられる。組み立てられたモータ100において、ヨーク1とグロメット3との間は、グロメット3の当接面3cに充填されたシール用樹脂4によりシールされる。また、ヨーク1とハウジング2との間は、グロメット3と一体形成されたOリング3aによりシールされる。なお、実施の形態1においては、ヨーク1とハウジング2との間は、Oリング3aによりシールされる場合について示したが、より確実にシールするために、ヨーク1とハウジング2との間の当接面(フランジ1cと凹部2aの他方の周方向側面2dとの当接面2eを含む)にもシール用樹脂4を塗布してもよい。この場合、ヨーク1とハウジング2との間、そしてヨーク1とグロメット3との間は、ともにシール用樹脂4によりシールされる。
上記実施の形態1では、ハウジング2の他方の周方向側面2dとヨーク1との当接面外周を覆うリブ部(延出部2f)が、ハウジング2に設けられた場合について示した。これに対して実施の形態2では、上記実施の形態1において、延出部2fに相当するものをグロメット13に設けた場合について、図8~図9を用いて説明する。図8は、本発明の実施の形態2に係るモータ200の分解斜視図、図9は、グロメット13付近の拡大図である。
また、グロメット13は、ハウジング12の凹部12a内に圧縮された状態で嵌合することで、ハウジング12に取り付けられる。グロメット13には、接続線5が貫通する複数(図示の例では2個)の貫通孔13bが形成されており、接続線5は貫通孔13bを通してモータ200外部に引き出されている。
また、グロメット13のヨーク1側の端面には、フランジ1bを当接させる当接面13cが形成されており、この当接面13cの径方向内側(図示の例では、Oリング13a近傍)にシール用樹脂4が充填され、フランジ1bとグロメット13とが当接することで、当接面13cはシールされる。そして、グロメット13のヨーク1側の端面で、当接面13cより径方向外側には、当接面13cより径方向外側に向かって凹んだ凹部13dが設けられている。この凹部13dは、図3に示した凹部3dと同様、フランジ1bとグロメット13との当接面13cから漏れ出たシール用樹脂4が溜まるようになっている。
Claims (6)
- 一端が開口し、開口端の外周にフランジが設けられた筒状のヨークと、
前記フランジに当接され、締結部材によって前記ヨークに締結されるとともに、前記ヨーク側外周に、径方向外側及び前記ヨーク側に開口する凹部を有するハウジングと、
前記凹部内に嵌合されることで、前記ハウジングに取り付けられるグロメットと、
前記フランジと前記グロメットとの当接面に充填されるシール用樹脂と、
を備え、
前記凹部の一方の周方向側面には、前記締結部材が位置しているとともに、前記凹部の他方の周方向側面には、前記ヨークとの当接面外周を覆うリブ部が設けられていることを特徴とする回転電機。 - リブ部は、凹部の他方の周方向側面より周方向に延出する延出部であることを特徴とする請求項1に記載の回転電機。
- リブ部は、グロメットの周方向側面のうち、凹部の他方の周方向側面に嵌合する側の周方向側面より周方向に延出する延出部であることを特徴とする請求項1に記載の回転電機。
- グロメットのヨーク側端面には、前記ヨークのフランジとの当接面より径方向外側に向かって凹んだ凹部が設けられていることを特徴とする請求項1から請求項3のうちいずれか1項に記載の回転電機。
- グロメットのヨーク側端面であって、前記ヨークの開口端の外周より径方向外側に位置して、軸方向に延びる凸部が設けられていることを特徴とする請求項1から請求項3のうちいずれか1項に記載の回転電機。
- ヨークのフランジの外周には、リブ部の前記ヨーク側端面を覆うように径方向外側に突出する突出部が形成されていることを特徴とする請求項1から請求項5のうちいずれか1項に記載の回転電機。
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PCT/JP2013/004311 WO2015004700A1 (ja) | 2013-07-12 | 2013-07-12 | 回転電機 |
CN201380078147.6A CN105379073B (zh) | 2013-07-12 | 2013-07-12 | 旋转电机 |
JP2015526019A JP5962857B2 (ja) | 2013-07-12 | 2013-07-12 | 回転電機 |
KR1020167000495A KR101806752B1 (ko) | 2013-07-12 | 2013-07-12 | 회전 전기기계 |
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JP2020124067A (ja) * | 2019-01-31 | 2020-08-13 | 株式会社鷺宮製作所 | 電動弁用ステータ及び電動弁 |
JP2022079535A (ja) * | 2019-01-31 | 2022-05-26 | 株式会社鷺宮製作所 | 電動弁用ステータ及び電動弁 |
US11509188B2 (en) * | 2020-02-06 | 2022-11-22 | Caterpillar Inc. | End plate for motor casing |
WO2024024476A1 (ja) * | 2022-07-27 | 2024-02-01 | 株式会社明電舎 | 回転機における冷却液流路のシール構造 |
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DE112018008182T5 (de) * | 2018-12-03 | 2021-09-02 | Hitachi Astemo, Ltd. | Lenkeinrichtung |
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- 2013-07-12 CN CN201380078147.6A patent/CN105379073B/zh not_active Expired - Fee Related
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KR101806752B1 (ko) | 2017-12-07 |
JPWO2015004700A1 (ja) | 2017-02-23 |
KR20160018751A (ko) | 2016-02-17 |
CN105379073B (zh) | 2018-01-19 |
CN105379073A (zh) | 2016-03-02 |
JP5962857B2 (ja) | 2016-08-03 |
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