Electric pump

Electric pump

technical field

The invention relates to with an inscribing pump electric pump.

background technology

A known electric pump publishes, a example the Japanese patent of the 2003129966A of the bulletin. The electric pump, the made of non-electronics brushless motor structure of motor (MT) to drive the pump, thus) and a spring of the liquid is (e.g., short circuit of hydraulic fluid) with.

Moreover, wherein the electric pump, an inscribing pump is used as the pump, the inscribing pump located above the motor inner part, thus reducing the electric pump along the axial direction and. Specifically speaking; the motor core head section (7) are inserted to the shell (3), and is (6) on the support of the adjacent core section permanent magnet, thus to with the core section same shaft of rotary shaft. An external rotor of the pump shell (5) respectively on the upper permanent magnet, thus is provided with wherein an. Inner rotor (4) is arranged in the outer rotor, shaft (A) deviates the upper core section of the central shaft (B). The flat, wherein the upper part of the motor; the inner rotor according to the outer rotor (and permanent magnet) is rotary, thus realizing the suction of liquid discharge and.

According to the upper known electric pump, fixed on the outer rotor is permanent magnet, wherein the embedded with the upper core section is in the circumferential surface to form. The flat, and is in The Periphery of the outer shell resin is made, or the outer circumferential surface of the permanent magnet on the wear thus, wherein the service life.

Therefore, the needs with the pump inscribing electric pump is prolonging the service life.

The invention and

According to the invention's aspect, wherein the electric pump is embedded with the wound with a core section (14) coil (15) shell and with the core section central shaft same central axis (B), and to the core section (14) is Face Along the shapes of permanent magnet (17) (36) (44) and a seat comprises a said permanent magnet is permanent magnet (17) (36) (44) is Face Along outer rotor (18) (37) (45) and a (17) (36) (44) and an outer rotor (18) (37) (45) and unit and deviates to the core section (14) central axis (B) central axis (A) inner rotor (20) (39) and in order to a number and an outer rotor (18) (37) (45) is jointAccording to the circulating the outer rotor (18) (37) (45) and inner rotor (20) (39) capable of rotating to realize the inscribing pump of a suction of liquid and discharge, the characterised is: aThe rotating device comprises a along the sliding surface of the axial direction extending (16a (16b) (35a (45a); The shell comprises with the core section of the projection part of the central shaft same central axis (B) (12a (32a) (42a (11c), and rotor assembly (16a (16b) (35a (45a) is arranged on the support of the projection part (12a (32a) (42a (11c) is Circular Mianke of the sealing surface.

Therefore, the rotor unit is mounted on the upper surface of the supporting to said projecting part Is Upward. Therefore, when the outer rotor is; the permanent magnet on the embedded with the upper section of the shell periphery of the sliding ceiling. Therefore, and wear of the shell and permanent magnet for prolonging service and lives.

Brief description is a drawings

The attached on the explained that the invention of the bolt is characteristics and a characteristics.

Pattern 1A indicated according concerns the invention the faces to pattern of the first embodiments,Pattern 1B expressed along the pattern 1A I-I straight section of the cross - section; the lowerOr 2 indicated according concerns the invention the cross - sections can of the second embodiments,Or 3 indicated according concerns the invention the cross - sections can of third embodiments,Pattern 4A indicated according concerns the invention the faces to pattern of said embodiments,Pattern 4B expressed along the pattern 4A II-II straight section of the cross - section; the lowerOr 5 indicated according concerns the invention the cross - sections can of the embodiments,Or 6 indicated according concerns the invention the cross - sections of the lower middle embodiments.

detailed description of illustrated embodiments

(The first embodiments) further diagram 1A and pattern 1B explanation concerns the invention the first embodiments of motor and oil pump. Pattern 1A expressed of motor and oil pump (10) facing to charts, 1B pattern expressed along the pattern 1A I-I straight section of the cross - sections can.

Pattern 1A and pattern 1B surface, a motor and oil pump shell 10 and 12) comprises a cover (11) and a housing and upper cover (11) and shell 12 and 13 fixing part.

That is cover is made 11 provided with a circular shape of the substrate, and a central shaft B. Circular concave hole (11a formed on an upper cover 11 surface. The concave hole (11a comprises deviates upper cover (11) and central shaft A central shaft A. The upper cover 11), and multiple support part (11b. e.g, third bracket (11b) and extends along the radial direction of the angle of stipulation.

By aluminium that is approximately is made of the disk-shaped shell, 12) connected with the upper cover 11 outer diameter equal outer diameters. The bottom shell (12) one side of the cover (1B pattern, to the upper cover (11) comprises a step part, thus with of the diameter of the upper shell 12 small diameter and a column and projecting part 12a. The bottom shell (12) central shaft and central shaft B are the same. Circular concave hole 12b formed on the shell (12) projecting part 12a. The concave hole 12b with with the central shaft A corresponding or the same central shaft, and connected with the upper 11a inner diameter same inner diameter. The upper shell 12), and multiple corresponds to the bracket (11b support part (12c. e.g, three support part 12c) and extends along the radial direction of the angle of stipulation.

Is composed of with a resin is made of the cylindrical stator (13), with the upper cover (11) and shell (12) outer diameter equal outer diameter and lower than the upper projecting part 12a outer diameter of the large inner diameter. The stator 13) along the axial direction extending, thus is longer than said projecting part 12in the axial direction. The stator (13) comprises with the central shaft B or same as the central shaft, and clamped between the upper cover (11) and shell 12.

Specifically speaking, wherein the upper part 13), and multiple corresponds to the bracket (11b and 12c each support part (12c. e.g, three support part 12c) and extends along the radial direction of the angle of stipulation.

The stator 13) between the upper cover (11) and shell 12, wherein bolt (21). e.g, wherein the three bolts of the implementation examples) is each support part 13from each support part is 11b, and a rotary into each support part 12c. The stator (13) and Circular Mianyan the radial direction or a gap through the preset space surrounding the projection part 12the circumferential surface (The Periphery), thus the upper part (13) gradually between the upper cover (11) and shell 12.

The stator is 13 to 11 contact with upper cover of annular faying surfaces, with the upper cover (11) and faying surfaces central point same central point annular groove formed on the upper cover (11) and faying surfaces. Sealing ring, S1 is example the A ring shape, matching of the upper groove.

Similarly; the stator 13 to 12 contact with the upper shell of the annular faying surfaces, with the upper shell (12) faying surfaces central point same central point annular groove formed on the upper shell (12) faying surfaces. Sealing ring Supply, a example the A ring shape, matching of the upper groove. The flat, comprising with three different parts (11), a shell (12) and stator 13) and motor and oil pump and key-presses a sealing.

The stator is 13 of the motor part (non-electronics brushless motor) is part, comprising multiple is approximately of the circular annular steel plate, 14) wound of the upper core section (14) coiled along the upper core section of the axial direction are 15. The core section (14) and coil 15) is pressed by moulds (is moulded), thus is formed on the upper part 13. The coil is more than 15 and realizing the conducting connecting rod is MATCHED with the radial direction extending towards the motor and oil pump (10 outsides.

The connector of 13b is formed on the upper part 13), thus surrounding the contact T-SHAPED.

Through the upper connector 13b retainer, a channel (a) is realized outside the connector of conducting connecting plate (indication) is difficult to assemble and driven part of the motor and oil pump (10) on. The power to the contact is MATCHED with the upper connector and to the coil 15, thus producing the rotary field. Used as to form the upper part (13) is in the resins clamping pressed by moulds coil (15) and other parts; can therefore prevent and a spring of the liquid is (e.g., short circuit of hydraulic fluid) with.

The stator is 13 of one part of one of the motor bracket the yoke (16) and permanent magnet 17, and the pump of one part of the outer rotor 18 and 19) and an inner rotor 20.

The upper bracket, 16 formed with a cylindrical. Specifically speaking, wherein the upper bracket, 16 inner diameter and said projecting part 12a outer diameter equal; and after the upper bracket, 16 along the axial direction 13) of the stator along the axial direction of the length of the shorter than.

Specifically speaking, wherein the bracket, 16 is on The Periphery comprises from the outside of THE base in the upper projecting part 12a upper end surface of the along the sliding surface or sliding surface of 16the axial direction of (1A pattern of the left). The upper bracket, 16 is inserted projecting part 12a, thus capable of the support of the projection part 12a on the sliding surface 16a.

The cylindrical or a cylindrical permanent magnet 17) of the upper bracket is 16 of surface, thus of the permanent magnet 17) along the radial direction of the upper core section 14. And the permanent magnet (17) is arranged between the stator is 13 of The Periphery with a space or a gap. The permanent magnet (17) comprises along the circumference direction of the other placing North rod and Antarctic. Drive the permanent magnet through the coil 15 rotary fields 17, so as to fix wherein the rotating.

An external rotor of the crowned or cylindrical 18) is provided with a rear yoke (16) and inner diameter equal outer diameter, and upper cover (11) and said projecting part 12the length distance between the end face along the axial direction length equal.

A 11 and an outer rotor between the projection part 12a 18) is the upper bracket is 16 of the upper cover. Therefore, wherein the upper bracket, 16 provided with a corresponding of the L-SHAPED seat with an upper outer rotor (18 surfaces' end part along the axial direction (e.g. pattern 1A) is sliding 16b surface of the left) extended. The infinite the outer rotor (18) arranged between the upper shell (12) and cover 11. An outer rotor (18) are arranged inscribing of the pump (cylindrical wheel (trochoid) type) and a pump outer rotor, and 16) and permanent magnet (17) is rotating after the upper bracket. The upper bracket, 16; the permanent magnet of the whole is within 17) and an outer rotor 18 central shaft and stator (13) and upper central shaft of A part of the same. The upper bracket, 16 arranged between the permanent magnet (17) and an outer rotor 18, thus preventing the outer rotor (18) is connected to magnetize.

The alternate column shapes shaft (19) is provided with a inserted with a shaft hole (11a and 12b inner diameter equal outer diameter. The shaft end 19 upper end 11a; the shaft (19) other end of the upper end 12b, thus the retaining shaft is 19. Therefore, the upper shaft (19) is centre shafts with deviating the central shaft of A central A shaft are the same. The inscribing (wheel is type) of the inner rotor pump of 20 to 19) is fixed to the rotary support of the upper shaft, and of the inner rotor 20 to an with the outer rotor is 18. The inner rotor 20 to 18) are equal along the axial length direction along the axial direction and length and outer rotor. Therefore, the upper cover (11) and shell (12) is projecting part 12a) is formed seal space, so as to fix the inner rotor (20) and upper surface and an outer rotor (18) and inner surface of said joint. The infinite the inner rotor (20) and central shaft A deviates the outer rotor (18) and central shaft B along the radial direction; therefore the inner rotor (20) fixed on the outer rotor is 18 to a.

The structure, 12) and central shaft B) parallel to the concave inlet and axial direction of the upper shell (23) and upper projecting part 12a end surface indents of the groove port entry 24. The air inlet port (24) connected with the wherein the liquid container (e.g., an oil disk, and) is inlet (23) connected. Circulating the outer rotor (18) and connected with the inner rotor is 20 of outer rotor (18) of, the feeding port 24 hydraulic air to the wall of the water inlet port (24) sealing spaces 22.

Similarly, 12 is formed in parallel to the concave discharge hole and is connected with the axial direction of the upper shell and a projection part 12a end surface indents of the groove extracting port. The discharge port is connected with the discharge hole. The embodiments, wherein pattern is not indicated the discharge hole and discharge port is as the discharge hole with the entrance 23 same structure, the discharge port is provided with an air inlet port (24) same structure; the position and differ from the upper shaft (19) is a. Therefore pipe, the outer rotor and 18 of being the inner rotor 20 common rotating of the outer rotor rotating 18, inhales through the discharging port of the discharging outlet matched to the sealing space hydraulic 22 ). e.g, the self-shifting transmission clutch engine and is) vehicle.

The casing pipe, the outer rotor and 18 of being the inner rotor 20 common rotating of the outer rotor rotating 18, wherein the motor and oil pump (10 and 23 is mounted at the opening of the upper 24 inlet of the liquid container air flow to the sealing space 22, then the air flow of the discharge port and an exhaust hole discharges the outlet (object. e.g, the self-shifting transmission clutch and a motor vehicle). The infinite fixed on the outer rotor 18) is circular 16) is sliding surface (16a The Periphery of the upper projecting part 12the outer surface of the crow, can therefore prevent the permanent magnet (17) at the upper part (13) on The Periphery sliding.

The explained the motor and oil pump (10) and a working conditions. Providing power of the contact) from outside the connector to the motor and oil pump 10, thus with the motor and oil pump 10, then the coil (15) forming the rotary field. To the pipe, the rotary field on the circumferential direction; the permanent magnet (17) with the angle force. And a spring angle of force, wherein the permanent magnet (17) and bracket, 16 and an outer rotor 18 common rotating.

The inner rotor 20 common rotating because of the outer rotor (18) and driven 18) is provided with an external rotor together; the motor and oil pump (10 and 23 is mounted at the opening of the upper 24 inlet of the liquid container air flow to the sealing space 22, then the air flow of the discharge port and an exhaust hole discharges the outlet (object. e.g, the self-shifting transmission clutch and a motor vehicle).

The summary, according to the embodiments, a obtain the cooling effect.

(1) According to the embodiments, wherein the upper bracket, 16) is sliding surface (16a The Periphery) supported by the projection part 12the circumference surface, and a rotatable. Therefore, and a spring of the outer rotor is 18, the permanent magnet 17, wherein the embedded with the upper core section (14) is fixed 13) and periphery of the sliding ceiling, therefore preventing the upper shell and permanent magnet 17 wear for prolonging service and lives.

(2) According to the embodiments, wherein a rotatable support to the bracket, 16 said projecting part (12a shell (12) by aluminium is made, thus enhanced wherein friction resistance. Moreover, when reducing the wear of said projecting part 12a, capable of reducing the upper bracket, 16; the permanent magnet (17) and an outer rotor 18) convexly (blurrings).

(3) According to the embodiments, does not need to consider is composed of the stator is 13 of The Periphery wear of the resin is made, the last capable of reducing the upper core section (14) and between the stator is 13 of The Periphery of the resin part. The flat; the permanent magnet (17) capable of the upper core section (14 nearer seat to the upper part and power.

(4) According to the embodiments, wherein the upper bracket, 16 arranged between the permanent magnet (17) and an outer rotor 18, thus preventing the outer rotor (18) is connected to magnetize. The flat, capable of preventing the external side, a example the iron filings, is attached to the external rotor 18).

(5) According to the embodiments, wherein the upper part pump (inscribing pump) and outer rotor (18) and an inner rotor seat (20) and motor (part of the yoke (16) and permanent magnet 17), thus with the motor and oil pump (30) along the axial direction and.

(The second embodiments) and cross - sections can for reference diagram 2 explained surface of concerns the invention the second embodiments of the motor and oil pump. The second embodiments, the upper cover and is fixed in the first embodiments are integrally moulded; and after the upper bracket, capable of the support of the upper shell of wherein the circumferential surface. The second embodiments is roughly similar to the first embodiments in structure, therefore the fixing explain and first embodiments difference between emphasis.

Are shown in or 2, wherein the implementation example's motor and oil pump (30) is integrally comprising a stator shell (31) and a shell of the fixed case 31 and 32.

The cavity part (31) are made to combine to enlarge or is provided with a cylindrical shape of a resin. Hole 33a 33) is formed on the upper part cavity 31 base. And the upper 33a comprises a deviates to the fixed case (31) and central shaft A central shaft A concave. Specifically speaking; the cavity part (31) comprises an with the core section (14) is the crowned part or the cylindrical part of the base (33) are part extending from the embedded 34.

Specifically speaking; the cylinder part (34) form a part of the motor part. The support part 31a formed on the upper part cavity 31) is a tubular 34, wherein the angle of each support part stipulated extended along the radial direction.

By aluminium of a disk-shaped shell is made, 32) connected with the fixed case 31 outer diameter equal outer diameters. The bottom shell (32) one side (or 2, wherein to the fixed case 31) comprises a step part, thus is formed with a cylindrical or cylindrical; and connected with the fixed case (31) tube (34) inner diameter equal outer diameter section projection 32a.

The project part 32a 34) is shorter than the upper part of the tubular along the axial length direction along the axial direction length. Through said projecting part 32the made of said on The Periphery, and indented the circular indents is 32b.

The bottom shell (32) projecting part (32a indents is 32b) and central shaft and central shaft B are the same. The concave hole 32c is round, and a indenting part of the inner diameter of the inner diameter of the central shaft of with is the same as the central shaft, A and 33a equal. The upper shell 32), and multiple corresponds to the bracket (32a support part (32d. e.g, three support part 32d) and extends along the radial direction of the angle of stipulation.

The bottom shell (32) is fixed to the fixed case is 31, wherein said projecting part (32a inserted into the cavity part (31 and 34 parts; each groove (21) of each support part is 31a, and a rotary into each support part 32d.

The bottom shell 32 (31) tube (34) is connected with the fixed case and annular faying surfaces, and connected with the upper shell (32) faying surfaces central point same central point annular groove, and upper shell (32) faying surfaces. Sealing ring S3, a example the A ring shape; and upper groove. The flat, comprising two different parts of the upper shell (32) and fixed case 31) is motor and oil pump (10 shells' and a sealing.

The cavity part (31 and 34 part comprises the back part of the upper part of the motor bracket (baffle bracket (35) and permanent magnet 36, and the pump of one part of the outer rotor 37 and 38) and an inner rotor 39.

The upper bracket, 35) is a cylinder or a cylindrical. Specifically speaking, wherein the upper bracket, 35 outer diameter of the concave 32b the inner diameters of equal; and after the upper bracket, 35) and cylinder part (34) along the axial length direction along the axial direction of the length equal.

Specifically speaking, wherein the upper bracket, 35 and outer surface of the comprises a corresponding L1 of above the concave 32b upper end points of sliding along 35a surface of the axial direction of the radiator (2) and extended. The upper bracket, 35 is inserted indents of the 32b, thus of the indented is sleeved 32b is capable of rotating the support on the sliding surface 35a.

The upper bracket, 35) in the projecting part (32a side of the rotary support, after being of the upper bracket, 35 and outer surface of the cylinder part (34) on The Periphery of a space or a gap.

The space along the radial direction of the upper core section (14), and permanent magnet (36) is arranged at the yoke (35 is circumferential surface of the space. And is shapes of a permanent magnet (36) between the cylinder part (34) on The Periphery of a space. Therefore, the sliding surface 35a formed along the axial direction of the yoke (35 is circumferential surface of the permanent magnet 36) extends.

The permanent magnet 36 rotating along with the coil 15 rotary fields, and upper bracket, 35) and permanent magnet is 36 of indents on the 32b to revolve.

An external rotor of the crowned or tubular 37) is provided with the yoke (35) and inner diameter equal outer diameter, 34 and equal along the axial length direction along the axial direction length of the cylinder part. The outer rotor (37) arranged between the fixed case (31 and 33) and shell (32) is installed with the yoke (35). The inscribing (wheel is type) and outer rotor of pump and 37, upper bracket (35) and permanent magnet (36) is rotating.

Is arranged in a cylindrical shaft (38) connected with the inserted with the 33a and 32c of the inner diameter equal outer diameter. An inputting shaft (38) is arranged above 33a, and shaft (38) and other end of the 32c, thus the retaining shaft is 38. The inscribing (wheel is type) of the inner rotor pump of 39 to 38) is fixed to the rotary support of the upper shaft, so as to fix the inner rotor 39 to an with the outer rotor is 37. The inner rotor 39 to 37) are equal along the axial length direction along the axial direction and length and outer rotor.

Therefore, the fixed case 31 base (33) and shell between 32 and sealed space 40, wherein the inner rotor 39 external surface and an outer rotor (37) and inner surface of said bolt or a joint. The infinite the inner rotor (39) and central shaft A deviates the outer rotor (37) and central shaft B along the radial direction; therefore the inner rotor 39 of being the outer rotor is 37 to a.

As follows the outer rotor (37) and an inner rotor 39 common cup; the motor and oil pump 30 working conditions is the same as the motor and oil pump 10 working conditions of the first embodiments, a therefore abbreviate the motor and oil pump 30 working conditions explanation of the second embodiments.

Are shown in or 2, wherein oil path GAP of the motor and oil pump 30, maintains through the oil inlet GAP between the motor and oil pump 30 high-pressure hydraulic back to the air inlet side of the air returning of the cylinder part (34) and permanent magnet 36) is formed inlet (23). And a spring of the oil guiding GAP opened, the engine oil pump (30) of the circulating flow of the liquid on the motor cooling portion, and capable of preventing impurity to the centre of the motor and oil pump (30) in.

The summary, according to the embodiments, a obtain and effect (3) is (5) is effect of the first embodiments claims.

(1) According to the second embodiments, wherein the upper bracket, 35 of the indented is 32b the upper Portion Mianke to of the support is sliding surface 35a. Therefore, when the outer rotor rotating 37, wherein the permanent magnet (36) do not have the cylinder part (34) and circumferential surface contact or the joint of the core section with the embedding. Preventing the cylinder part (34) and permanent magnet 17 wear for prolonging service and lives.

(2) According to the second embodiments, wherein the upper bracket (35) capable of the support is indents is 32b (shell (32) by aluminium is made, thus enhanced wherein friction resistance. The reducing the wear indents on the 32b, wherein similarly capable of reducing the upper bracket, 35; the permanent magnet (36) and rotating of the outer rotor 37).

(The third embodiments) and cross - sections can for reference diagram 3 explained surface of concerns the invention the third embodiments of the motor and oil pump. The third embodiments, wherein the outer rotor of the second embodiments capable of the support of the upper shell of the circumference surface. The third embodiments is roughly similar to the second embodiments in structure, therefore the fixing explain and second embodiments difference between emphasis.

Are shown in or 3, wherein the third implementation example's motor and oil pump shell (41) comprises a cavity part (31) and a shell of the fixed case 31 and 42.

By aluminium that is approximately is made of the disk-shaped shell, 42) connected with the fixed case 31 outer diameter equal outer diameters. The bottom shell (42) one side comprises a step part (or 3, wherein to the fixed case 31), thus formed with a composed of a cylinder or the cylindrical configuration, and provided with the cavity part (31) tube (34) inner diameter equal outer diameter of said projecting part 42a.

The project part 42a 34) is shorter than the upper part of the tubular along the axial length direction along the axial direction length. Through said projecting part 42a arranged on The Periphery, and indents the circular indents the 42b.

The bottom shell (42) projecting part 42a indents and 42b) and central shaft and central shaft B are the same. The concave hole 42c is round, and a indenting part of the inner diameter of the inner diameter of the central shaft of with is the same as the central shaft, A and 33a equal. The upper shell 42), and multiple corresponds to the bracket part 31a support part 42d and extending along the radial direction of the angle of stipulation.

The bottom shell (42) fixed on the fixed case and 31, thus on said projecting part 42a inserted to the stator cavity (31 and 34 parts; each groove (21) of each support part is 31a, and a rotary into each support part 42d.

The cavity part (31 and 34 part comprises the back part of one of the motor bracket (43) and permanent magnet 44, and pump of one part of the outer rotor 45 and 38) and an inner rotor 39.

The rotor is 45 of the cylindrical or cylindrical. Specifically speaking; the outer rotor 45 outer diameter of the concave 42b the inner diameters of same, and an external rotor 45 to 34) are equal along the axial length direction along the axial direction length of the cylinder part.

Specifically speaking; the outer rotor is 45 masks is provided with a corresponding from the L2 of with an upper projecting part 42a upper end surface of sliding along 45a surface of the axial direction (e.g. the left 3) extended. The outer rotor (45) is inserted on indents 42b, thus is composed of the indented 42b is capable of rotating the support on the sliding surface 45a. The rotor is 45 of a inscribing (wheel is type) and rotor of pump.

When the outer rotor (45) capable of the support on the upper projection part of 42a side, being to the outer rotor (45) is circumferential surface of the cylinder part (34) on The Periphery of a space.

The space along the radial direction of the upper core section (14), and cylindrical or the cylindrical shapes rear yoke (43) is arranged at the upper outer rotor (45) is circumferential surface of the space. The permanent magnet (44) is corresponding to the yoke (43 is circumferential surface of the space.

Therefore, the sliding 45a surface of the outer rotor (45) is circumferential surface of the extending 44) and permanent magnets along the axial direction. The sliding 45in surface is indents on the 42b to revolve. The cylinder part is 34 of The Periphery and cylindrical or between the permanent magnet is 44 of cylinder is provided with a space. The permanent magnet (44) act according to the coil 15 rotary fields to revolve.

The infinite the upper shaft (38) and support to the upper shaft (38) is rotor 39 structure, and according to the outer rotor (45) and motor and oil pump 41 working conditions of the inner rotor 39 rotating with of the second embodiments, a therefore abbreviate the shaft of the embodiments 38) and an inner rotor 39 structure and motor and oil pump 41 working conditions explanation.

The summary, according to the third embodiments, comprising and first embodiments the effect (3) is (5) is the effect.

(1) According to the third embodiments, and outer rotor 45, the sliding surface 45by part is indented 42b is arranged on The Mianke to of the support. Therefore, when the outer rotor rotating 45, wherein the permanent magnet (44) do not have the upper core section (14) is a cylinder part (34) and circumferential surface structure or a screwed with the embedding. Preventing the cylinder part (34) and permanent magnet 44 wear for prolonging service and lives.

(2) According to the third embodiments, a rotary support of the outer rotor (45) is indents (42b shell (42) by aluminium is made, thus enhanced wherein friction resistance. The reducing the wear indents on the 42b, wherein similarly capable of reducing the upper bracket, 43; the permanent magnet (44) and an outer rotor 45) convexly (blurring).

(The fourth embodiments) further diagram 4A and pattern 4B explanation concerns the invention the fourth embodiments of motor and oil pump. The fourth embodiments, and a driving part and an upper shell body by the first embodiments. The fourth embodiments is roughly similar to the first embodiments in structure, therefore the fixing explain and first embodiments difference between emphasis.

Pattern 4A expressed the motor and oil pump (50) facing to charts, and pattern 4B expressed along 4In pattern the II-II straight line is the cross - sections can; said fourth embodiments motor and oil pump (50) is integrally comprising a stator cavity (51 and 54) and a shell 12.

The cavity part (51) is made of resin and formed with a bottom cylindrical. The indents 52a is formed on the upper part cavity 51) is 52 to one side of the pattern 4B), thus indents to the upper shell 12 ends.

Specifically speaking; the cavity part (51) comprises an with the core section (14) is a tubular part of the base (52) are part extending from the embedded 53. The coil 15 windings of the upper core section.

Specifically speaking; the cylinder part (53) form a part of the motor part. The bracket 51a part of the angle of stipulation extended along the radial direction formed on the upper part cavity (51 and 53 parts on.

Indents is 54a to form the cover is made of aluminium 54), thus of the indents the 52a to transmission. Moreover, a support part 54b formed on the upper cover 54), thus extended with the bracket part is 51a.

The fixed case 51) between the upper cover (54) and shell 12, thus each bolt (21) and each support part 51from each support part 54b inserting hole, and is configured into each support part 12c.

The partial indents 52a and indents between the 54a to form a sealed space 55. The driving motor (56) of the sealing space 55. The cylinder part 53 that the upper bracket (16); the permanent magnet 17, the rotor is 18, the first 19 structure and inner rotor 20 structure and first embodiments is the same. The motor driven oil pump 50 working conditions of because of 20) and an outer rotor 18 of caused by the inner rotor and a motor and oil pump (10) and working conditions with a first embodiments are the same, therefore the fixing abbreviate the fourth embodiments the motor and oil pump (50 explanations a.

The summary, wherein according to the fourth embodiments, wherein a core the effect is effect of the first embodiments claims.

(1) According to the embodiments, wherein the drive motor is 56 of formed at the upper part shell (51) and upper cover (54) between the space 55, thus of the motor (56) and motor and oil pump (501) are integrally moulded. The structure, with the motor and oil pump of the motor driving part compare with the independent assembly, capable of reducing the space cost and.

(A) embodiments) further diagram 5) is cross - explained attachment according concerns the invention claims a fifth embodiments of motor and oil pump. The fifth embodiments, and are formed on the upper shell (12) on said projecting part mediate project portions of the upper cover and 11. The fifth embodiments is roughly similar to the first embodiments in structure, therefore a lower explain and first embodiments difference between emphasis.

Are shown in or 5, wherein the motor and oil pump (60) is integrally fifth embodiments 12) and clamping comprising a cover (11) and shell of the upper shell (12) and upper cover (11 and 13 fixing part.

The outer cover (11) of the radiator (5), and to the upper shell (12) comprises a step part, thus formed with a columnar projection part 11c.

The bottom shell (12) one side (or 5, wherein the upper cover (11) comprises a step part, thus formed with a columnar projection part 12a.

The stator (13) comprises the back part of one of the motor bracket (16) and permanent magnet (17) and pump of one part of the outer rotor 18 and 19) and an inner rotor 20.

The upper bracket, 16) is a cylinder or a cylindrical. Specifically speaking, wherein the upper bracket, 16 inner diameter and said projecting part 11c and said projecting part 12a outer diameter equal; and after the upper bracket, 16 along the axial direction 13) of the stator along the axial direction of the length of the shorter than.

Specifically speaking, wherein the bracket, 16 and circumferential surface and sliding surface 16b a sliding surface 16a. The sliding 16from surface corresponding extended with an upper projecting part 12a end surface arranged along the axial direction from L1 base, and sliding 16b surface of the extended with an upper projecting part 11c end surface arranged along the axial direction from L2 seat. The upper bracket, 16 is inserted projecting part 12a and said projecting part 11c, thus capable of the support on the sliding surface 16a and sliding surface 16b.

The summary, according to the fifth embodiments, wherein a core the effect is effect of the first embodiments claims.

(1) According to the fifth embodiments, wherein the bracket, 16 and sliding surface 16a and sliding 16b surface is rotationally support and a, thus with the yoke (16); the permanent magnet (17) and an outer rotor 18 swing.

(The middle embodiments) further diagram 6) is cross - explained attachment according concerns the invention the middle embodiments of motor and oil pump. The sixth embodiments is roughly similar to the third embodiments the structure. Wherein the upper middle embodiments the motor and oil pump pipe of the length of the third implementation example's difference 43, the outer rotor 45) is directly connected on the permanent magnet is 44.

According to the middle embodiments, wherein a core the effect is effect of the third embodiments claims.

(1) According to the middle embodiments, wherein the provided with the upper bracket, 43 spaces is capable of which is permanent magnet. The thick permanent magnet, for improving performance of the motor output or oil pump.

The implementation the examples capable of the following exchange.

* The first embodiments, said projecting part 12a formed on the upper shell 12, wherein however, a formed on the upper projecting part 12a mediate projection part of the upper cover and 11.

* The second embodiments, and indents is 32b and 42b of the columnar projection part 32a and 42the circumferential surface. However; the upper shell 32 and 42 upper base and along the axial direction transmission, thus of the circular the indenting part.

* The first, the second and third embodiments, wherein the drive motor of form an integrated with the upper shell part.

* Fixed on the inner rotor the shaft line of the hole on said shell is mounted on the support.

* The upper shell of the motor and oil pump can not (two or three) formed with multiple parts are. The shell is a single part and.

* 14) Capable of inserting of the upper core section of the coil 15 windings is composed of a shell of resin by. The other words, rubber the coil is 15 of the 14 sections can face of the shell is uniformly coated and outer layer for sealing the time.

* The upper embodiments comprising a arranged outside the upper inscribing pump of rotor and an inner rotor, however, and selectively; the internal gear pump can use.