CN105379073B

CN105379073B - Electric rotating machine

Info

Publication number: CN105379073B
Application number: CN201380078147.6A
Authority: CN
Inventors: 橘高好映
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2013-07-12
Filing date: 2013-07-12
Publication date: 2018-01-19
Anticipated expiration: 2033-07-12
Also published as: JPWO2015004700A1; KR20160018751A; WO2015004700A1; JP5962857B2; CN105379073A; KR101806752B1

Abstract

The present invention provides a kind of situation for making sealing resin attachment in assembly operation and reduced, and will not damage the electric rotating machine of outward appearance.The motor (100) of the present invention includes：Yoke (1), the yoke (1) are tubular, one end open, flange (1b) are provided with the periphery of openend, and have the through hole (1c) run through for screw (6) in the flange (1b)；Housing (2), the housing (2) and the periphery of openend abut against, using screw (6) to be anchored on yoke (1), and there is the recess (2a) to radial outside and yoke (1) side opening in the periphery of yoke (1) side；Packing ring (3), by making the packing ring (3) be fitted in recess (2a) to be installed on housing (2)；And sealing resin (4), the sealing resin (4) is filled into the bearing surface (3c) of flange (1b) and packing ring (3), because screw (6) is located at a peripheral side (2c) of recess (2a), and covering and the flank (2f) of the periphery of the bearing surface (2e) of yoke (1) are provided with another peripheral side (2d) of recess (2a).

Description

Electric rotating machine

Technical field

The present invention relates to the electric rotating machine with sealing structure, such as it is related to for the electronic of driving power steering mechanism Machine.

Background technology

The comparatively small-sized motor for driving oil pump, power steering mechanism etc. is equipped with automobile.Generally, it is right For the motor of automobile is equipped on, due to that can adhere on road surface existing sand or dust during traveling, or due to The chance being soaked with rain during the rainy day is more, therefore, it is possible to can cause the life-span because these foreign matters invade motor interior Shorten.Then, as the motor with the structure (sealing structure) for preventing the foreign matters such as water or dust intrusion motor interior, example Such as, it is proposed that the motor described in patent document 1.

Motor described in patent document 1 possesses motor casing, the motor casing by housing main body (yoke) and End cap (housing) is formed, and the housing main body is tubular, one end open, flange, the end cap is provided with the periphery of openend Abutted against with hollow bulb, and with flange, end cap set oriented motor casing radial outside and flange side opening it is recessed Portion, formed and upwardly extended in the week of housing main body and both ends are to the close of recess inner opening in the end face of the end cap abutted against with flange Envelope groove portion, in the recess of end cap that makes the opening portion closing towards housing main body side using the flange for being anchored on end cap and close The inside filling sealing resin of envelope groove portion, makes to seal between flange and end cap, that is filled is close using the sealing resin Envelope resin fills the small recess formed to the opposite face of end cap and flange and formed in both docking sections small Gap, realize the sealing between end cap and flange, the sealing structure thus, it is possible to obtain preventing foreign matter intrusion motor interior.

Prior art literature

Patent document

Patent document 1：Japanese Patent Laid-Open 2007-166682 publications

The content of the invention

The technical problems to be solved by the invention

Motor described in patent document 1 is using the sealing resin filled, to make flange (housing main body) and end cap Between seal.However, stuffing pressure, the influence of filling time during due to filling sealing resin, sealing resin is possible to Spilt outside from abutting towards motor, the sealing resin spilt is possible to that end cap or flange can be attached to, so as to damage Outward appearance.Also, if sealing resin is attached in assembly operation, additionally need the behaviour for being removed the sealing resin Make, so as to which there is also the problem of operability decline.

The present invention is to solve the above problems a little for problem, its object is to obtain a kind of electric rotating machine, for sealing The electric rotating machine of structure so that the situation that sealing resin is adhered in assembly operation is reduced, and will not damage outward appearance.

Technical scheme used by solution technical problem

Electric rotating machine involved in the present invention includes：Yoke, the yoke are tubular, one end open, and in the outer of openend Week is provided with flange, has the through hole through fastening member in the flange；Housing, the housing and the periphery of the openend are supported Connect, the yoke is anchored on by the fastening member, and have in the periphery of the yoke side to radial outside and described The recess of yoke side opening；Packing ring, by making the packing ring be fitted in the recess, so as to which the packing ring is installed into the shell Body；And sealing resin, the sealing resin are filled into the bearing surface of the flange and the packing ring, the fastening member Covering and the yoke are provided with positioned at a peripheral side of the recess, and in another peripheral side of the recess The flank of the periphery of bearing surface.

Invention effect

According to the present invention, in the electric rotating machine with sealing structure, using the teaching of the invention it is possible to provide one kind can make close in assembly operation The situation that envelope is adhered to resin is reduced, and will not damage the electric rotating machine of outward appearance.

Brief description of the drawings

Fig. 1 be represent yoke 1 used in the motor 100 involved by embodiments of the present invention 1, housing 2 and The exploded perspective view of packing ring 3.

Fig. 2 is the stereogram for representing to place yoke 1 and the state using the fastening yoke 1 of screw 6 on Fig. 1 housing 2.

Fig. 3 is the enlarged drawing near the extension 2f of Fig. 2 housing 2.

Fig. 4 is the figure of the variation for the yoke 1 for representing Fig. 1, is the enlarged drawing near the extension 2f of housing 2.

Fig. 5 is the figure of the variation for the packing ring 3 for representing Fig. 1, is the part near the end face for the side of yoke 1 for representing packing ring 3 Sectional view.

Fig. 6 is the figure of other variations of the packing ring 3 for representing Fig. 1, is represented near the end face of the side of yoke 1 of packing ring 3 Phantom.

Fig. 7 is the figure of other the another variations for the packing ring 3 for representing Fig. 1, is that the end face for the side of yoke 1 for representing packing ring 3 is attached Near phantom.

Fig. 8 be represent yoke 1 used in the electric rotating machine involved by embodiments of the present invention 2, housing 12 and The exploded perspective view of packing ring 13.

Fig. 9 is the enlarged drawing near the bearing surface 13c of Fig. 8 packing ring 13.

Embodiment

Embodiment 1.

Below, based on brief description of the drawings embodiments of the present invention 1, but in each figure, same or equivalent component, position are marked Identical label illustrates.

Fig. 1 is yoke 1, housing 2 and the pad for representing to use in the motor 100 involved by embodiments of the present invention 1 The exploded perspective view of circle 3, Fig. 2 are to represent to place yoke 1 on the housing 2 for be provided with packing ring 3 and yoke 1 and housing 2 are carried out The stereogram of the state of fastening, Fig. 3 is the enlarged drawing near the extension 2f of Fig. 2 housing 2.

In Fig. 1, electric rotating machine is that motor 100 includes：Yoke 1, the yoke 1 are tubular, one end open, and in openend 1a periphery is provided with flange 1b；Housing 2, the housing 2 abuts with flange 1b, and is anchored on yoke 1；And packing ring 3, from housing The connecting line 5 such as lead runs through the packing ring 3 derived from the motor body stored in 2.Flange 1b formed with multiple through hole 1c, Screw 6 (fastening member) is axially through the plurality of through hole 1c.

In the side periphery of yoke 1 of housing 2 formed with recess 2a, recess 2a to the radial outside of housing 2 and the side of yoke 1 this Both direction opening.The position corresponding with the through hole 1c formed in flange 1b when being fastened to yoke 1 and housing 2 Put, form multiple fastener hole 2b of trip bolt 6, one in fastener hole 2b i.e. fastener hole 2b1 forms one in recess 2a Peripheral side 2c (Fig. 3 left side).That is, screw 6a (fastening member) is located at a recess 2a peripheral side 2c.In recess 2a Another peripheral side 2d (Fig. 3 right side) be provided with hypocrateriform extension 2f (flank), from the bearing surface 2e with flange 1b The sealing resin 4 escaped to outside motor 100 accumulates in extension 2f (reference picture 3).Extension 2f is from recess 2a Another peripheral side 2d circumferentially, with housing 2 formed be integrated.In addition, in Fig. 3, show that extension 2f is formed as Hypocrateriform, so as to lodge in situation therein from the bearing surface 2e sealing resins 4 spilt, but the situation is not limited to, also may be used To cover the periphery of the bearing surface 2e between the recess 2a of housing 2 another peripheral side 2d and the flange 1b of yoke 1, so as to Be formed as covering bearing surface 2e periphery, and the part at the bottom without pallet, axially through shape.

Packing ring 3 is formed by the flexible insulating materials such as rubber, is formed as one with O-ring portion 3a as shown in Figure 1 Body.O-ring portion 3a configures the radially inner side in the side end face of yoke 1 of housing 2, when placing yoke 1 on housing 2, makes flange 1b When being abutted with housing 2, O-ring 3a is pressed and deformed, with to being sealed between yoke 1 and housing 2.

Packing ring 3 is fitted in the recess 2a of housing 2 with the state compressed, and is thus installed on housing 2.Packing ring 3 formed with Through multiple (in the example of diagram be 2) through hole 3b of connecting line 5, connecting line 5 is by through hole 3b so as to leading to electricity Outside motivation 100.

The bearing surface 3c for abutting flange 1b is formed in the end face of the side of yoke 1 of packing ring 3, in bearing surface 3c radial direction Sealing resin 4 is filled in inner side, is abutted by flange 1b with packing ring 3, so as to be filled with the portion of sealing resin 4 in bearing surface 3c (bearing surface 3c radially inner side) is divided to be sealed.Also, it is provided with the end face of the side of yoke 1 of packing ring 3 from filled with sealing tree The recess 3d that the bearing surface 3c of fat 4 is recessed to radial outside.A part (radially inner side) of recess 3d shown in Fig. 3 is by flange 1b Covering.The sealing resin 4 spilt from bearing surface 3c accumulates in recess 3d.

Then, reference picture 1, Fig. 2, the number of assembling steps of motor 100 is briefly described.By being fitted to packing ring 3 In the recess 2a of housing 2, so as to which packing ring 3 is installed in housing 2 together with brush carrier (not shown).

(it is O in the example of diagram in the bearing surface 3c of packing ring 3 radially inner side after packing ring 3 is installed into housing 2 Near shape ring 3a) it is coated with the sealing resin 4 after melting, the behaviour for carrying out the bearing surface 3c potting resins to flange 1b Yu packing ring 3 Make.Finally, as shown in Fig. 2 yoke 1 is placed on housing 2, flange 1b and housing 2 and packing ring 3 bearing surface 3c is made to offset Connect, yoke 1 and housing 2 are fastened using screw 6, thus can be assembled and obtain motor 100.In the motor being completed In 100, sealed between yoke 1 and packing ring 3 by the sealing resin 4 for the bearing surface 3c for being filled into packing ring 3.Also, yoke 1 with Sealed between housing 2 by the O-ring 3a being integrally formed with packing ring 3.In addition, in embodiment 1, yoke 1 and shell are shown By O-ring 3a come situation about sealing between body 2, but in order to more reliably be sealed, can also yoke 1 and housing 2 it Between bearing surface (comprising flange 1b and recess 2a another peripheral side 2d between bearing surface 2e) coating sealing resin 4.In this case, sealed between yoke 1 and housing 2 and between yoke 1 and packing ring 3 by sealing resin 4.

As sealing resin 4, the material that be preferably used as the adhesion required by sealing structure, has excellent water-resistance, Such as silicones.

As described above, the motor 100 (electric rotating machine) of embodiments of the present invention 1 includes：Yoke 1, the yoke 1 are cylinder Shape, one end open, flange 1b is provided with the periphery of openend；Housing 2, the housing 2 abut with flange 1b, utilize (the fastening of screw 6 Component) to be anchored on yoke 1, and there is the recess 2a to radial outside and the side opening of yoke 1 in the periphery of the side of yoke 1；Pad Circle 3, by making the packing ring 3 be fitted in recess 2a to be installed on housing 2；And sealing resin 4, the quilt of sealing resin 4 Flange 1b and packing ring 3 bearing surface 3c are filled into, because screw 6a is located at a recess 2a peripheral side 2c (Fig. 3 left side Side), and it is provided with covering and the bearing surface 2e of yoke 1 periphery in recess 2a another peripheral side 2d (Fig. 3 right side) Extension 2f (flank), therefore, housing 2 is installed in packing ring 3, and the bearing surface 3c of flange 1b and packing ring 3 is filled with sealing In the state of resin 4, by the way that yoke 1 is placed on housing 2, flange 1b and housing 2 and packing ring 3 bearing surface 3c is set to offset Connect, and fastened using screw 6, so as to which when yoke 1 is installed into housing 2, sealing resin 4 (supports in the end face of packing ring 3 Junction 3c) on radially and circumferential flow, a part for sealing resin 4 are flowed out to outside motor 100 from bearing surface 2e, but Because the sealing resin 4 of the outflow is extended portion 2f coverings, adhere to therefore, it is possible to reduce sealing resin 4 in assembly operation Situation.Further, since the sealing resin 4 spilt will not be attached to other parts, therefore it can provide and will not damage outward appearance Electric rotating machine.

Here, in the state of the bearing surface 3c of packing ring 3 is filled with sealing resin 4, if yoke 1 is placed on into housing 2 On, and flange 1b is abutted with the bearing surface 3c of packing ring 3, then sealing resin 4 will not be inclined to specific radial position or spy Fixed circumferential position, and equably radially or circumferentially flow out, but in embodiments of the present invention 1, due to recess will be covered 2a another peripheral side 2d and the extension 2f of the bearing surface 2e peripheries of yoke 1 are arranged on and there are as fastening member A screw 6a recess 2a peripheral side 2c opposite side, therefore, because fastened using screw 6a, therefore, Screw 6a fastening force plays a role, and its result make it that the most of such as Fig. 3's for the sealing resin 4 for being filled into bearing surface 3c is thick Shown in arrow like that, the (another of opposite to that side is flowed into from (one) the peripheral side 2c for the recess 2a for being fastened with screw 6a sides One) peripheral side 2d, from the sealing resin 4 that bearing surface 2e is spilt due to being arranged at (another) peripheral side 2d's Extension 2f is covered, therefore, it is possible to reliably cover the major part of the sealing resin 4 leaked to outside motor 100.

In addition, according to the embodiment of the present invention 1, due to the extension 2f and the shape of housing 2 of the periphery that covers bearing surface 2e It is integrally formed, therefore, the shape only by changing mould when housing 2 is formed, it becomes possible to extension 2f is set, by This, using the teaching of the invention it is possible to provide significantly cost increase will not be caused, the situation that sealing resin 4 is adhered in assembly operation is subtracted It is few, and the electric rotating machine of outward appearance will not be damaged.In addition, on extension 2f, figure 3 illustrates be provided with from the another of recess 2a The situation of the neighbouring extension to circumferentially extending in center of one peripheral side 2d radial direction, but the situation is not limited to, extend Portion can be while recess 2a another peripheral side 2d and the abutting part 2e peripheries of yoke 1 be covered, from another circumference Side 2d is to circumferentially extending, because bearing surface 2e is located at the flange 1b sides (internal side diameter) of another peripheral side of recess, therefore, Such as extension can be arranged to laterally circumferentially extend from the external diameter of another peripheral side of recess.

In addition, another peripheral side 2d of recess 2a on being arranged at housing 2 extension 2f, implementation of the invention In mode 1, show that extension 2f is formed as hypocrateriform with so that the feelings accumulated from the bearing surface 2e sealing resins 4 spilt Condition, but the situation is not limited to, as long as another peripheral side 2d and the knot of the bearing surface periphery of yoke 1 of covering housing 2 Structure, for example, the internal side diameter from another peripheral side 2d of housing 2 can be set circumferentially to protrude, to cover housing 2 The extension for the L-shaped that the mode of another peripheral side 2d and the bearing surface periphery of yoke 1 extends to the side of yoke 1 of axial direction. In this case, sealing resin 4 is leaked to outside motor 100 from bearing surface 2e, but with shown in embodiments of the present invention 1 Extension 2f pallet is identical, and the sealing resin 4 spilt accumulates in another axial sides 2d and L-shaped by housing 2 The gap that is formed of extension, so as to which sealing resin 4 is adhered in assembly operation situation is reduced.In addition, by Other parts will not be attached in the sealing resin 4 spilt, therefore the electric rotating machine that will not damage outward appearance can be provided.

In the past, confirmed by situation about being spilt to bearing surface of the sealing resin from yoke and housing, so as to Confirm yoke and housing reliably to be sealed, in addition, by the extension 2f from the side of yoke 1 of axial direction, be able to confirm that close Envelope resin 4 escapes to extension 2f situation, therefore, regardless of whether there is extension 2f, is able to confirm that yoke 1 and housing 2 Reliably sealed.In addition, the extension 2f shown in Fig. 3 is formed as circumferentially, therefore, operator passes through the magnetic from axial direction The side of yoke 1 touches extension 2f, so as to be likely to occur attachment from the bearing surface 2e sealing resins 4 spilt in assembly operation, But as shown in figure 4, the protuberance 1d prominent to radial outside is set to cover extension by the periphery of the flange 1b in yoke 1 The 2f side end face of yoke 1, so as to which protuberance 1d plays a part of extension 2f cap, it thus will not touch and prolong from axial direction Extending portion 2f, so as to further reduce the situation that sealing resin 4 adheres in assembly operation.Further, since the sealing spilt Other parts will not be attached to resin 4, therefore the electric rotating machine that will not damage outward appearance can be provided.

According to the embodiment of the present invention 1, as shown in figure 3, being provided with the side end face of yoke 1 of packing ring 3 from filled with sealing The recess 3d being recessed with the bearing surface 3c of resin 4 to radial outside, therefore, housing 2, and bearing surface 3c are installed in packing ring 3 In the state of sealing resin 4, when abutting against flange 1b and packing ring 3 bearing surface 3c, yoke 1 is installed to housing When 2, although sealing resin 4 is leaked to outside motor 100 from bearing surface 3c, the sealing resin 4 that this spills is due to meeting Flow in recess 3d, therefore the situation that sealing resin 4 adheres in assembly operation is reduced.Further, since the sealing spilt Other parts will not be attached to resin 4, therefore the electric rotating machine that will not damage outward appearance can be provided.Due to recess 3d radial direction Inner side is covered by flange 1b, therefore, if from the sealing resin 4 that the bearing surface 3c of packing ring 3 is escaped to outside motor 100 compared with Few, then the sealing resin 4 spilt itself can be accumulated in the space formed by flange 1b and recess 3d, so as to provide more The electric rotating machine of outward appearance will not be damaged.If in addition, the reason such as deviation due to the loading of sealing resin 4, from supporting for packing ring 3 The sealing resin 4 that junction 3c is leaked to outside motor 100 is more, then the sealing resin 4 spilt can accumulate recess 3d The middle part that radial outside is more leaned on than flange 1b, by the recess 3d from the side of yoke 1 of axial direction, it is able to confirm that sealing tree Fat 4 is accumulated in recess 3d, thus, it is possible to confirm that yoke 1 is reliably sealed with packing ring 3.

In addition, following situations are shown in Fig. 3, i.e.,：It is recessed provided with being recessed on the outside of being radially oriented from the bearing surface 3c of packing ring 3 Portion 3d, recess 3d a part are more being covered than flange 1b by radially inner side by flange 1b, and remaining part is located at than flange 1b The position of radial outside is more leaned on, but is not limited to the situation, can use and set from the bearing surface 3c filled with sealing resin 4 The structure of the recess of outside depression is radially oriented, can also use and be arranged to be integrally located at recess 3d1 more to lean on footpath than flange 1b The structure (reference picture 5) or recess 3d2 of position laterally are integrally located at the position that radially inner side is more leaned on than flange 1b, and The structure (reference picture 6) that recess 3d2 is integrally covered by flange 1b.As shown in figure 5, it is arranged to make recess 3d1 entirety position using In the case of than flange 1b more by the structure of the position of radial outside, the sealing resin 4 spilt accumulates in recess 3d1, leads to Cross from being carried out from the side of yoke 1 of axial direction to recess 3d1, be able to confirm that sealing resin 4 is accumulated in recess 3d1, from And it is able to confirm that yoke 1 and packing ring 3 are reliably sealed.As shown in fig. 6, it is integrally located at using recess 3d2 than flange 1b more By the position of radially inner side, and in the case of the overall structures covered by flange 1b of recess 3d2, the sealing resin spilt 4 Body is reliably accumulated in the space formed by flange 1b and recess 3d2, so as to provide the rotation that can less damage outward appearance Motor.

In addition, in embodiments of the present invention 1, show to be provided with from filled with sealing tree in the side end face of yoke 1 of packing ring 3 The bearing surface 3c of fat 4 is radially oriented the recess 3d of outside depression situation, but is not limited to the situation, can also as shown in fig. 7, Set and be located at than positions of the flange 1b set by the periphery of the openend of yoke 1 more by radial outside and axially extend convex Portion 3e.Although in this case, sealing resin 4 from bearing surface 3c to motor 100 outside spill, the sealing tree spilt Fat 4 can accumulate the gap formed by the side end face of yoke 1 of packing ring 3 with recess 3e, so as to sealing resin 4 in assembly operation The situation of attachment is reduced.Further, since the sealing resin 4 spilt will not be attached to other parts, therefore can provide The electric rotating machine of outward appearance will not be damaged.

Embodiment 2.

In above-mentioned embodiment 1, show to be provided with another peripheral side 2d and yoke 1 of covering housing 2 in housing 2 The situation of the flank (extension 2f) of the periphery of bearing surface.On the other hand, illustrated using Fig. 8~Fig. 9 in embodiment 2, The situation of the component suitable with the extension 2f in above-mentioned embodiment 1 is provided with packing ring 13.Fig. 8 is the embodiment party of the present invention The exploded perspective view of motor 200 involved by formula 2, Fig. 9 are the enlarged drawings near packing ring 13.

In Fig. 8, the motor 200 as electric rotating machine includes：Yoke 1, the yoke 1 are tubular, one end open, and are being opened Mouth end 1a periphery is provided with flange 1b；Housing 12, the housing 12 abuts with flange 1b, and is anchored on yoke 1；And packing ring 13, the connecting line 5 such as lead runs through the packing ring 13 derived from the interior main body of motor 200 stored of housing 12.Flange 1b is formed There are multiple through hole 1c, screw 6 (fastening member) is axially through the plurality of through hole 1c.Flange 1b and housing 12 bearing surface 12e is abutted against.

Formed in radial outside from the side periphery of yoke 1 of housing 12 to housing 12 and the side both direction opening of yoke 1 it is recessed Portion 12a, screw 6a (fastening member) are located at a recess 12a axial sides 12c (Fig. 8 left side).To yoke 1 and shell The position corresponding with the through hole 1c formed in flange 1b when body 12 is fastened is multiple tight formed with trip bolt 6 Solid hole 12b.

Packing ring 13 is formed by the flexible insulating materials such as rubber, is formed as shown in Figure 8 with O-ring portion 13a One.O-ring portion 13a configures the radially inner side in the side end face of yoke 1 of housing 12, when placing yoke 1 on housing 12, makes convex When edge 1b abuts with housing 12, O-ring 13a is pressed and deformed, with to being sealed between yoke 1 and housing 12.

Packing ring 13 is fitted in the recess 12a of housing 12 with the state compressed, and is thus installed on housing 12.The shape of packing ring 13 Into there is multiple (in the example of diagram be 2) through hole 13b for being run through by connecting line 5, connecting line 5 by through hole 13b so as to Lead to outside motor 200.

The bearing surface 13c for abutting flange 1b is formed in the side end face of yoke 1 of packing ring 13, sealing resin 4 is filled into Bearing surface 13c radially inner side (near O-ring 13a in the example of diagram), by making flange 1b be abutted against with packing ring 13, So as to which bearing surface 13 is sealed.In the side end face of yoke 1 of packing ring 13, the position of radial outside is more being leaned on than bearing surface 13c, if It is equipped with the recess 13d being recessed from bearing surface 13c to radial outside.Recess 13d is same with the recess 3d shown in Fig. 3 so that from The sealing resin 4 that the bearing surface 13c of flange 1b and packing ring 13 is spilt accumulates wherein.

It is also, embedding in another peripheral side 12d phases of the recess 12a with housing 12 in the peripheral side of packing ring 13 Unify the peripheral side of side, i.e. another peripheral side 13f (Fig. 9 right side) of packing ring 13 is provided with the extension 13g of hypocrateriform (flank) so that the sealing resin 4 escaped to from housing 12 and flange 1b bearing surface 12e outside motor 200 accumulates in Wherein (reference picture 9).Extension 13g circumferentially, is formed as from another peripheral side 13f of packing ring 13 with packing ring 13 One.In addition, in Fig. 9, show that extension 13g is formed as hypocrateriform, so as to be accumulated from the bearing surface 12e sealing resins 4 spilt Situation therein is stored in, but is not limited to the situation, the recess 12a of housing 12 another peripheral side 12d can also be covered With the flange 1b of yoke 1 bearing surface 12e periphery, so as to be formed as covering bearing surface 12e periphery, and there is no pallet Bottom part, axially through shape.

As described above, the motor 200 (electric rotating machine) of embodiments of the present invention 2 includes：Yoke 1, the yoke 1 are cylinder Shape, one end open, flange 1b is provided with the periphery of openend；Housing 12, the housing 12 abut with flange 1b, (tight using screw 6 Gu component) to be anchored on yoke 1, and there is the recess 12a to radial outside and the side opening of yoke 1 in the periphery of the side of yoke 1； Packing ring 13, by making the packing ring 13 be fitted in recess 12a to be installed on housing 12；And sealing resin 4, the sealing tree Fat 4 is filled into flange 1b and packing ring 13 bearing surface 13c, because screw 6a is located at a recess 12a peripheral side 12c (Fig. 9 left side), and it is provided with covering and the abutting of yoke 1 in recess 12a another peripheral side 12d (Fig. 9 right side) The extension 13g (flank) of face 12e periphery, therefore, housing 12, and flange 1b and packing ring 13 abutting are installed in packing ring 13 Face 13c is filled with the state of sealing resin 4, by the way that yoke 1 is placed on housing 12, makes flange 1b and housing 12 and pad The bearing surface 13c of circle 13 is abutted against, and is fastened using screw 6, so as to which when yoke 1 is installed into housing 12, sealing is used On the end face (bearing surface 13c) of packing ring 13 radially and circumferential flow, the part of sealing resin 4 is from bearing surface for resin 4 12e is flowed out to outside motor 200, but because the sealing resin 4 of the outflow is extended portion 13g coverings, therefore, it is possible to reduce The situation that sealing resin 4 adheres in assembly operation.Further, since the sealing resin 4 spilt will not be attached to other parts, Therefore the electric rotating machine that will not damage outward appearance can be provided.

Here, in the state of the bearing surface 13c of packing ring 13 is filled with sealing resin 4, if yoke 1 is placed on into housing On 12, and flange 1b is only set to be abutted with the bearing surface 13c of packing ring 13, then sealing resin 4 will not be inclined to specific radial position Or specific circumferential position, and equably radially or circumferentially flow out, but in embodiments of the present invention 2, due to that will cover The extension 13g of recess 12a another peripheral side 12d and bearing surface 12e of yoke 1 periphery, which is arranged on, there are conduct The screw 6a of a fastening member recess 12a peripheral side 12c opposite side, therefore, because being entered using screw 6a Row fastening, therefore, screw 6a fastening force plays a role, and its result is identical with the situation of embodiment 1 so that is filled into abutting Most of (one) peripheral side 12c from the recess 12a for being fastened with screw 6a sides of face 13c sealing resin 4 is flowed into (another) peripheral side 12d of opposite to that side, it is (another due to being arranged at this from the sealing resin 4 that bearing surface 12e is spilt One) peripheral side 12d extension 13g covering, therefore, it is possible to reliably cover the sealing leaked to outside motor 100 With the major part of resin 4.

In embodiments of the present invention 1, the extension 2f of covering bearing surface 2e periphery is formed with housing 2 to be integrated, because This, for different motor specifications, because the shape of housing 2, fastener hole 2b position are different, so as to be needed to respective mould Mould change is carried out, it is therefore possible to cause cost to increase, on the other hand, and according to the embodiment of the present invention 2, covering abuts The extension 13g of face 12e periphery is formed with packing ring 13 and is integrated, therefore, even for different motor specifications, housing 2 Shape, fastener hole 2b position it is different, but the shape that only packing ring 13 can be continued to use to each motor changes General packing ring 13, therefore, it is possible to suppress cost increase, cope with a variety of motor specifications.

In addition, the extension 13g on another peripheral side 13f from packing ring 13 circumferentially, reality of the invention Apply in mode 2, show that extension 13g is formed as hypocrateriform with so that accumulating from the bearing surface 12e sealing resins 4 spilt Situation, but be not limited to the situation, as long as another peripheral side 12d of covering housing 12 and the bearing surface of yoke 1 The structure of periphery, for example, can set from another peripheral side 13f of packing ring 13 internal side diameter along housing 12 to circumference The extension extended, and formed in the extension to cover another peripheral side 12d of housing 12 and yoke 1 bearing surface Periphery mode to axial direction the side of yoke 1 extend convex portion.In this case, although sealing resin 4 is spilt from bearing surface 12e To motor 200, but it is identical with the pallet of the extension 13g shown in embodiments of the present invention 2, and the sealing spilt is used Resin 4 accumulates in the gap formed by another peripheral side 12d of housing 12 and the extension of packing ring 13 and convex portion, so that The situation that sealing resin 4 is adhered in assembly operation is reduced.Further, since the sealing resin 4 spilt will not be attached Other parts, therefore the electric rotating machine that will not damage outward appearance can be provided.

In the past, confirmed by situation about being spilt to bearing surface of the sealing resin from yoke and housing, so as to Yoke and housing is confirmed reliably to be sealed, on the other hand, can be true by the extension 13g from the side of yoke 1 of axial direction Recognize sealing resin 4 and escape to extension 13g, therefore, regardless of whether there is extension 13g, yoke 1 and housing 12 can be confirmed Reliably sealed.

According to the embodiment of the present invention 2, as shown in figure 9, being provided with the side end face of yoke 1 of packing ring 13 from filled with sealing The recess 13d being recessed with the bearing surface 13c of resin 4 to radial outside, therefore, housing 12 is installed in packing ring 13, and abut Face 13c is filled with the state of sealing resin 4, and when abutting against flange 1b and packing ring 13 bearing surface 13c, yoke 1 is pacified When being attached to housing 12, although sealing resin 4 is leaked to outside motor 200 from bearing surface 13c, the sealing tree spilt Fat 4 is due to that can flow in recess 13d, therefore the situation that sealing resin 4 adheres in assembly operation is reduced.Further, since The sealing resin 4 spilt will not be attached to other parts, therefore can provide the electric rotating machine that will not damage outward appearance.Due to recessed Portion 13d radially inner side is covered by flange 1b, therefore, if being escaped to from the bearing surface 13c of packing ring 13 close outside motor 200 The amount of envelope resin 4 is less, then the sealing resin 4 spilt itself can be accumulated in the space formed by flange 1b and recess 13d, So as to provide the electric rotating machine that can less damage outward appearance.If the in addition, original such as deviation due to the loading of sealing resin 4 Cause, the sealing resin 4 leaked to from the bearing surface 13c of packing ring 13 outside motor 200 is more, then the sealing resin spilt 4 can accumulate the part for more leaning on radial outside in recess 13d than flange 1b, pass through the recess from the side of yoke 1 of axial direction 13d, it is able to confirm that sealing resin 4 is accumulated in recess 13d, thus, it is possible to confirm that yoke 1 is reliably sealed with packing ring 13.

In addition, another peripheral side 2d, 12d and covering and yoke of recess 2a, 12a on being arranged at housing 2,12 The flank of 1 bearing surface periphery, in embodiments of the present invention 1, show another peripheral side from the recess 2a of housing 2 The extension 2f of 2d circumferentially situation, but in embodiments of the present invention 2, show the peripheral side from packing ring 13 In the side chimeric with recess 12a another peripheral side 12d phases be extensions of another peripheral side 13f to circumferentially extending Portion 13g situation, but be not limited to the situation, can also set it is prominent from yoke 1 to radial outside, to cover the (another of housing 2 One) flank of L-shaped that extends to the side of housing 2 of axial direction of the mode of the periphery of the bearing surface of peripheral side 2d and yoke 1. In this case, covered due to leaking to the sealing resin 4 outside motor by flank, therefore, in assembly operation seal and use The situation that resin 4 adheres to is reduced.Further, since the sealing resin 4 spilt will not be attached to other parts, therefore can The electric rotating machine of outward appearance will not be damaged by providing.

In embodiments of the present invention 1,2, as electric rotating machine, in general motor 100 is illustrated, but not It is limited to other electric rotating machines such as the motor or motor with brush, brushless motor, alternating current generator.

Label declaration

1：Yoke, 1a：Openend, 1b：Flange, 1c：Through hole, 1d：Protuberance, 2,12：Housing, 2a, 12a：Recess, 2b、2b1：Fastener hole, 2c, 2d, 12c, 12d：Peripheral side, 2e, 12e：Bearing surface, 2f：Extension (flank), 3,13：Packing ring, 3c、13c：Bearing surface, 3d, 3d1,3d2,13d：Recess, 3e：Convex portion, 4：Sealing resin, 6,6a：Screw (fastening member), 13f：Peripheral side, 13g：Extension (flank), 100,200：Motor (electric rotating machine).

Claims

A kind of 1. electric rotating machine, it is characterised in that including：

Yoke, the yoke are tubular, one end open, and are provided with flange in the periphery of openend；

Housing, the housing are abutted with the flange, and the yoke is anchored on by fastening member, and in yoke side periphery With the recess to radial outside and the yoke side opening；

Packing ring, by making the packing ring be fitted in the recess, so as to which the packing ring is installed into the housing；And

Sealing resin, the sealing resin are filled into the bearing surface of the flange and the packing ring,

The fastening member is located at a peripheral side of the recess, and is provided with another peripheral side of the recess The periphery of bearing surface with the yoke is covered, the sealing resin for making to spill from the bearing surface lodges in therein The flank of hypocrateriform.
2. electric rotating machine as claimed in claim 1, it is characterised in that

Flank is the extension circumferentially gone out from another peripheral side of recess.
3. electric rotating machine as claimed in claim 1, it is characterised in that

Flank be from the peripheral side of packing ring with edge the peripheral side of the mutually chimeric side of another peripheral side of recess Circumferentially extend the extension.
4. electric rotating machine as claimed in claim 1, it is characterised in that

Recess is provided with the yoke side end face of packing ring, the recess is recessed to radial outside from the bearing surface of the flange with the yoke Fall into.
5. electric rotating machine as claimed in claim 1, it is characterised in that

More it is provided with and vertically prolongs by the position of radial outside in the yoke side end face of packing ring, than the periphery of the openend of the yoke The convex portion stretched.
6. electric rotating machine as claimed in claim 1, it is characterised in that

In the yoke side end face of the periphery of flange formed with covering flank of yoke and the protuberance prominent to radial outside.