CN204290531U - The rotor of motor, motor and air conditioner - Google Patents
The rotor of motor, motor and air conditioner Download PDFInfo
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- CN204290531U CN204290531U CN201420726908.6U CN201420726908U CN204290531U CN 204290531 U CN204290531 U CN 204290531U CN 201420726908 U CN201420726908 U CN 201420726908U CN 204290531 U CN204290531 U CN 204290531U
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Abstract
The purpose of this utility model is to provide a kind of can improve performance, improve the rotor of reliability and the motor that reduces costs, motor and air conditioner.The rotor of motor comprises: axle; Rotor magnet, it is arranged integratedly with axle around axle; And position probing magnet, it is arranged on an end of the axis of rotor magnet, and rotor magnet comprises: bracket, and it is arranged on the end face of position probing magnet side; And projection, it is arranged on bracket, and be provided with shaping cast gate, position probing magnet has the hole of inserting for projection, projection is inserted in hole, position probing magnet is abutted with bracket, and by the leading section thermal welding (heat-fused portion) by projection, position probing magnet is fixed on rotor magnet.
Description
Technical field
The utility model relates to the rotor of motor, motor and air conditioner.
Background technology
Disclose the rotor of motor in the past as described below, it comprises: inner cylinder portion, and it is fixed around rotating shaft, is made up of plastic material; Magnetic pole piece, it is cylindrically arranged on the outer circumferential side of this inner cylinder portion, is made up of plastic material; Linking part, above-mentioned magnetic pole piece and inner cylinder portion are combined into one by it; Inertial mass body, it is discoideus, is configured in the first end face of magnetic pole piece, has the inserting hole inserted for inner cylinder portion in rotating center section; Multiple protuberance, the first end face of itself and magnetic pole piece is integrally formed; Multiple through hole, it is arranged on the circumference of inertial mass body, inserts multiple protuberances of first end face respectively; And hot melt junctor, it is by being formed the leading section thermal welding of the protuberance inserted in each through hole, wherein, through hole around inertial mass body is formed with holding section, this holding section engages with the hot melt junctor formed when thermal welding, the internal diameter of the inserting hole of inertial mass body roughly the same with the external diameter of inner cylinder portion (such as patent documentation 1).
Patent documentation 1: Japanese Unexamined Patent Publication 2002-252940 publication
Utility model content
In the rotor of above-mentioned motor in the past, because the resin injection mouth (cast gate) of magnetic pole piece is arranged on end face portion, so in order to prevent gate cutting position from giving prominence to from end face, need to arrange recess at cast gate periphery.
But, when adopting this kind of construction, although can prevent gate cutting position from giving prominence to, but there is following problems: owing to tailing off at cast gate periphery magnetic pole piece, so cause the decrease in efficiency of motor because magnetic force declines, and the distortion of magnetic flux distribution increases, and can produce different sound.
The utility model completes in view of the foregoing, its object is to provide a kind of and can improve performance, improves reliability and the rotor of the motor reduced costs, motor and air conditioner.
In order to solve the problem, realizing utility model object, the rotor of the motor that the utility model relates to, it comprises: axle; Rotor magnet, it is arranged integratedly with this axle around above-mentioned axle; Position probing magnet, it is arranged on an end of the axis of above-mentioned rotor magnet; And pair of bearings, it is installed on above-mentioned axle in the both sides of above-mentioned rotor magnet, and wherein above-mentioned rotor magnet comprises: bracket, and it is arranged on the end face of above-mentioned position probing magnet side; And projection, it is arranged on above-mentioned bracket, and be provided with shaping cast gate, above-mentioned position probing magnet has the hole of inserting for above-mentioned projection, above-mentioned projection is inserted in above described holes, above-mentioned position probing magnet is abutted with above-mentioned bracket, and by the leading section thermal welding by above-mentioned projection, above-mentioned position probing magnet is fixed on above-mentioned rotor magnet.
Above-mentioned rotor magnet has from the outstanding cylindrical portion of the end face of above-mentioned position probing magnet side in the position by internal side diameter compared with being provided with the position of above-mentioned bracket, the end face of the above-mentioned cylindrical portion of above-mentioned rotor magnet and the end face of above-mentioned bracket form the same face, and above-mentioned bracket and the above-mentioned cylindrical portion of above-mentioned position probing magnet and above-mentioned rotor magnet abut and be installed on above-mentioned rotor magnet.
The periphery of above-mentioned projection is polygonal shape, and above described holes is circular, being dimensioned to of above-mentioned projection and above described holes: when above-mentioned projection being inserted in above described holes, the angle of the periphery of above-mentioned projection can be reamed by the edge of above described holes.
The axial length of aspect ratio from one end of the above-mentioned raised sides of above-mentioned axle to the end face of above-mentioned bracket of above-mentioned projection is short.
The motor that the utility model relates to comprises the rotor of above-mentioned motor.
Above-mentioned motor is equipped with in the air conditioner that the utility model relates to.
According to the utility model, play and can improve performance, improve reliability and the effect reduced costs.
Accompanying drawing explanation
Fig. 1 is the figure of the structure representing the motor that execution mode 1 relates to.
Fig. 2 (a) is from axis and the unilateral observation arranging projection is provided with the end view of the rotor of bearing.
Fig. 2 (b) is the X-X sectional view of Fig. 2 (a).
Fig. 3 (a) is from axis and arranges the end view of the unilateral observation rotor of projection.
Fig. 3 (b) is the X-X sectional view of Fig. 3 (a).
Fig. 4 (a) is from axis and arranges the end view of the unilateral observation rotor magnet of projection.
Fig. 4 (b) is the X-X sectional view of Fig. 4 (a).
Fig. 5 (a) is the vertical view of position probing magnet.
Fig. 5 (b) is the X-X sectional view of Fig. 5 (a).
Fig. 6 (a) be position probing magnet is installed on rotor magnet before rotor magnet and the stereogram of position probing magnet.
Fig. 6 (b) is the stereogram of the rotor magnet after installation site detection magnet.
Fig. 6 (c) is the stereogram leading section thermal welding of projection being fixed the rotor magnet after position probing magnet.
Fig. 7 is the manufacturing flow chart of the manufacture method of the rotor representing the motor that execution mode 1 relates to.
Fig. 8 is the figure of an example of the structure representing the air conditioner that execution mode 2 relates to.
Symbol description
1 axle
2 annular knurls
3 back yokes
4 bearing abutting parts
5 projections
6 cast gates
7 brackets
8 cylindrical portion
9 plastic magnets
10 rotor magnets
11 position probing magnets
12 cylindrical portion
13 axis holes
14 detected portion
15 holes
16 base portions
20 rotors
21 bearings
30 supports
35 heat-fused portion
40 molded stators
41 moulded resins
42 stators
43 stator cores
44 insulation divisions
45 coils
46 substrates
47 magnetic detecting elements
300 air conditioners
310 indoor sets
320 off-premises stations
330 off-premises station air blasts
Embodiment
Below, the execution mode of the rotor of the motor that the utility model relates to, motor and air conditioner is described in detail based on accompanying drawing.In addition, the utility model can't help following execution mode limit.
Execution mode 1
Fig. 1 is the figure of the structure representing motor of the present embodiment, Fig. 2 (a), Fig. 2 (b) are the figure representing the rotor being provided with bearing, Fig. 3 (a), Fig. 3 (b) are the figure representing rotor, Fig. 4 (a), Fig. 4 (b) are the figure representing rotor magnet, the figure that Fig. 5 (a), Fig. 5 (b) are the figure representing position probing magnet, Fig. 6 (a), Fig. 6 (b), Fig. 6 (c) are the assemblings representing rotor.Below, with reference to Fig. 1 ~ Fig. 6 (c), the structure of rotor of the present embodiment and motor is described.
As shown in Figure 1, motor 100 comprises: molded stator 40; Rotor 20, it is configured in the inner side of molded stator 40; And metal support 30, it is arranged on an axially end of molded stator 40.Motor 100 is such as brushless DC motor or stepping motor.
Molded stator 40 is by one-body molded for the stator 42 being provided with substrate 46 and formed with the thermosetting resin (moulded resin 41) such as such as unsaturated polyester resin.At substrate 46, electronic unit is installed, is welded with wire.Due to the structure that substrate 46 is more weak in intensity, so preferred lower pressure is shaping, therefore at thermosetting resins such as molded and shaped middle use unsaturated polyester resins.
Stator 42 comprises: stator core 43, and its laminated electromagnetic steel plate forms; Insulation division 44, it puts on stator core 43; And coil 45, it is wound in insulation division 44.With thermoplastic resins such as PBT (polybutylene terephthalate (PBT)) by one-body molded to insulation division 44 and stator core 43, or insulation division 44 is made to be the products formed of split and to be installed on stator core 43.
Substrate 46 is installed in insulation division 44.Be formed for the sensor circuit of the position of detection rotor 20 or the drive circuit for drive motor 100 at substrate 46, and electronic unit is installed.Magnetic detecting element 47 is comprised in the electronic unit of substrate 46, magnetic detecting element 47 configures opposedly with position probing magnet 11 (Fig. 3 (a), Fig. 3 (b)), comes the position of detection rotor 20 by detecting the magnetic force produced from position probing magnet 11.The driving of brushless DC motor is carried out in the following manner: such as in the drive circuit of substrate 46, carries out energising control according to the position of this rotor 20 to coil 45.Thereby, it is possible to carry out the driving of high efficiency and low noise to motor 100.
Axle (shaft) 1 is integratedly provided with in rotor 20.At axle 1, pair of bearings 21 is installed.Be inserted in the hollow bulb being arranged on molded stator 40 by the rotor 20 being provided with bearing 21, bearing 21 is just supported by molded stator 40 and support 30.
Fig. 2 (a) is from axis and the unilateral observation arranging projection 5 is provided with the end view of the rotor 20 of bearing 21, and Fig. 2 (b) is the X-X sectional view of Fig. 2 (a).Fig. 3 (a) is from axis and arranges the end view of the unilateral observation rotor 20 of projection 5, and Fig. 3 (b) is the X-X sectional view of Fig. 3 (a).Fig. 4 (a) is from axis and arranges the end view of the unilateral observation rotor magnet 10 of projection 5, and Fig. 4 (b) is the X-X sectional view of Fig. 4 (a).
As shown in Fig. 2 (a), Fig. 2 (b) He Fig. 3 (a), Fig. 3 (b), rotor 20 comprises: axle 1; Rotor magnet 10, it is arranged integratedly with axle 1 around axle 1; And position probing magnet 11, it is arranged on an end of the axis of rotor magnet 10.Here, an end face of the axis of rotor magnet 10 is provided with such as multiple bracket 7, and with the mode installation site detection magnet 11 abutted with these brackets 7.In addition, each bracket 7 is provided with projection 5, under the state that position probing magnet 11 is installed on rotor magnet 10, projection 5 is inserted in the hole 15 (Fig. 5 (a), Fig. 5 (b)) being arranged at position probing magnet 11, and makes position probing magnet 11 be fixed on rotor magnet 10 the leading section thermal welding of projection 5.Now, projection 5 leading section thermal welding and form heat-fused portion 35.The height of heat-fused portion 35 is identical or lower than it with the detected portion 14 of position probing magnet 11.
In addition, a bearing 21 is pressed into abutting with the bearing abutting part 4 of rotor magnet 10 along axle 1, another bearing 21 is abutted along axle 1 end face be pressed into the cylindrical portion and cylindrical portion 12 with position probing magnet 11.Bearing 21 is such as ball bearing.Pair of bearings 21 is installed on axle 1 in the both sides of rotor magnet 10.
As shown in Fig. 4 (a), Fig. 4 (b), rotor magnet 10 comprises: back yoke 3, and it is fixed on axle 1 around; And plastic magnet 9 (resin magnet portion), it is arranged on the outer peripheral face of back yoke 3.Back yoke 3 be by shaping for the thermoplastic resin containing soft magnetic bodies or magnetic and formed.Back yoke 3 can be molded as one with axle 1 at the outer peripheral face of axle 1.Plastic magnet 9 be by shaping for the thermoplastic resin containing rare earth magnet powders and formed.Plastic magnet 9 is molded as one at the outer peripheral face of back yoke 3 and back yoke 3.Annular knurl 2 is applied with at the outer peripheral face of the axial central portion of axle 1.Annular knurl 2 prevents axle 1 from coming off from back yoke 3 and rotating.
Back yoke 3 is cylindrical shapes of periphery shape in wave shape.Back yoke 3 has cylindrical portion and cylindrical portion 8 at the internal side diameter of an end face (end face of substrate 46 side), has bearing abutting part 4 at the internal side diameter of another end face (with the end face of substrate 46 side opposite side).Specifically, cylindrical portion 8 is arranged on around the axis hole on the end face of substrate 46 side of back yoke 3, with the height preset to axially protruding outside.Cylindrical portion 8 arranges lean on internal side diameter than pedestal 7.Cylindrical portion 8 props up bearing 21 across position probing magnet 11.Bearing abutting part 4 be provided with on the end face of end face opposite side of cylindrical portion 8, be arranged on around axis hole at the internal side diameter of back yoke 3, with the height preset to axially protruding outside.
In addition, the internal diameter of cylindrical portion 8 is greater than the external diameter of axle 1 from its end face to certain depth.Thereby, it is possible to prevent the position being pressed into bearing 21 from producing burr when back yoke 3 is shaping, realize the raising of quality.
At the end face being provided with cylindrical portion 8 of back yoke 3, the projection 5 being provided with multiple bracket 7 and axially extending from each bracket 7.Here, the end face being provided with cylindrical portion 8 of back yoke 3 is end faces of position probing magnet 11 side of back yoke 3.Bracket 7 is such as formed with 3, but also can be quantity in addition.The axial length of aspect ratio from one end of projection 5 side of axle 1 to the end face of bracket 7 of projection 5 is short.
Multiple bracket 7 forms as one with cylindrical portion 8.Multiple bracket 7 such as radially extends from cylindrical portion 8 to outside diameter.In addition, the height of the end face of cylindrical portion 8 is identical with the height of the end face of bracket 7, and two end faces form the same face.Bracket 7 and cylindrical portion 8 are the installation surface of position probing magnet 11, and position probing magnet 11 is located in the axial direction by them.In addition, bracket 7 also can be formed with cylindrical portion 8 dividually.
The periphery of projection 5 can be made to be polygonal shape (as shown in the figure in octagon-shaped).And hole 15 is circular.Projection 5 is inserted in hole 15 (Fig. 5 (a), Fig. 5 (b)), and by the leading section thermal welding of projection 5, position probing magnet 11 can be fixed on back yoke 3 thus.Here, if projection 5 is formed as cylindric, then in order to make projection 5 insert, and between projection 5 and hole 15, need gap, this gap just becomes movable space, and rotor magnet 10 is worsened with the same core of position probing magnet 11.
Therefore, in the present embodiment, the size in projection 5 and hole 15 is designed as follows: make the periphery of projection 5 be polygonal shape, when making projection 5 insert in hole 15, the angle of the periphery of projection 5 can be reamed by the edge in hole 15.By adopting such structure, not producing movable space under the state of inserting in hole 15 making projection 5, and position probing magnet 11 can be made to align.Therefore, it is possible to improve rotor magnet 10 and the same core of position probing magnet 11, improve the position detection accuracy of rotor 20, so efficiency and the performance of motor 100 can be improved.
In addition, projection 5 is provided with the resin injection mouth (cast gate 6) when carrying out shaping to back yoke 3.Inject the thermoplastic resin containing soft magnetic bodies or magnetic from cast gate 6, carry out shaping back yoke 3.Generally speaking, when cut-out is arranged on the cast gate of the end face of back yoke 3, because place of incision can cause unfavorable condition, so can not prevent unfavorable condition from end face is outstanding by arranging recess at the periphery of cast gate to make place of incision from end face is outstanding.But, the magnet amount of rotor magnet 10 can be caused to reduce and rotor magnet 10 becomes uneven owing to arranging recess in back yoke 3, so cause magnetic force to decline and the distortion rate deterioration of magnetic flux distribution, efficiency and the hydraulic performance decline of motor 100 may be caused.
In the present embodiment, owing to arranging cast gate 6 in the projection 5 leading section thermal welding melted, so both because of the bad situation of the outstanding generation quality at gate cutting position, but also efficiency and the hydraulic performance decline of motor 100 can not can be prevented because not needing to arrange recess at rotor magnet 10.
And then, in the present embodiment, owing to being provided with projection 5 at bracket 7, even if so when the leading section thermal welding by projection 5 position probing magnet 11 be held down and also can prevent floating of position probing magnet 11 by bracket 7 and be out of shape, the quality of assembling can be improved.
And then, in the present embodiment, owing to making the axial length of the aspect ratio of projection 5 from one end of projection 5 side of axle 1 to the end face of bracket 7 short, so when position probing magnet 11 is installed on rotor magnet 10, make projection 5 through position probing magnet 11 hole 15 before, axle 1 is made to insert in the axis hole 13 (Fig. 5 (a), Fig. 5 (b)) of position probing magnet 11, that therefore carries out position probing magnet 11 and rotor magnet 10 determines core, makes assembling become easy.
Rotor magnet 10 is formed by back yoke 3 being arranged in a mold and being molded as one with the outer peripheral face of back yoke 3 by plastic magnet 9.Now, the waveform shape due to the periphery of back yoke 3 is transferred in the inner circumferential of plastic magnet 9, and both engage each other, and therefore the waveform shape of the inner circumferential of plastic magnet 9 has the effect preventing from rotating.In addition, owing to making the periphery of back yoke 3 shape in wave shape to form magnetic circuit, so at random magnetic flux distribution can be adjusted.
In addition, what rotor magnet 10 adopted is the structure making plastic magnet 9 shaping at the outer peripheral face of back yoke 3, but rotor magnet 10 entirety also can be made all to be made up of plastic magnet, in this case, also plays the effect identical with present embodiment.
Fig. 5 (a) is the vertical view of position probing magnet 11, and Fig. 5 (b) is the X-X sectional view of Fig. 5 (a).As shown in Fig. 5 (a), Fig. 5 (b), position probing magnet 11 is the ring-types being provided with axis hole 13 at central portion.Position probing magnet 11 has the cylindrical portion 12 being provided with axis hole 13 at internal side diameter, and has the detected portion 14 of ring-type at outside diameter, and it arranges in the axial direction opposedly with magnetic detecting element 47 and uses in position probing.Here, cylindrical portion 12 is arranged on axle 1 around.In addition, as being positioned at outside diameter and being positioned at the base portion 16 of the part of the position probing magnet 11 of internal side diameter compared with cylindrical portion 12 compared with detected portion 14, in the form of a ring, this part is provided with multiple hole 15 for tabular.Hole 15 is arranged on the position corresponding with the projection 5 of rotor magnet 10.In addition, cylindrical portion 12 wall ratio detected portion 14 and arrange porose 15 part and base portion 16 thick.The wall ratio of detected portion 14 arrange porose 15 part, i.e. base portion 16 thick.In addition, position probing magnet 11 is asymmetric in the axial direction, and rotor magnet 10 side is plane.Therefore, cylindrical portion 12 and base portion 16 are compared outstanding towards the opposition side of rotor magnet 10 side with detected portion 14.In addition, detected portion 14 is outstanding towards the opposition side of rotor magnet 10 side compared with base portion 16.
The projection 5 of rotor magnet 10 is inserted in hole 15, and by the leading section thermal welding of projection 5, thus position probing magnet 11 is fixed on rotor magnet 10.Like this, owing to mechanically position probing magnet 11 being fixed on rotor magnet 10, so the reliability of assembling can be improved.In addition, owing to the wall thickness of position probing magnet 11 to be set as the wall thickness of the part making to arrange porose 15 is the thinnest, so the height of the heat-fused portion 35 of the leading section thermal welding of projection 5 can be made identical or lower than it with the detected portion 14 of position probing magnet 11.Thus, when assembling motor, heat-fused portion 35 can not contact with molded stator, and can improve the reliability of assembling.
The external diameter of cylindrical portion 12 and the inner ring external diameter of bearing 21 equal or slightly larger, and less than the outer ring internal diameter of bearing 21, only prop up the inner ring of bearing 21.Bearing 21 is pressed into along axle 1 and abuts to the end face of cylindrical portion 12, thus carry out the location of bearing 21.Bearing 21 configure than detected portion 14 near internal side diameter.
Like this, in the present embodiment, in rotor 20, the interval of the detected portion 14 of position probing magnet 11 and the magnetic detecting element 47 of substrate 46 is decided by means of only position probing magnet 11, makes the management of size and adjustment become easy.Therefore, the precision of the distance between detected portion 14 and magnetic detecting element 47 can be improved, so can the position of precision detection rotor 20 well, the controlling of motor 100 and the raising of performance can be realized.
Fig. 6 (a), Fig. 6 (b), Fig. 6 (c) show the assembling of rotor 20.Fig. 6 (a) is stereogram position probing magnet 11 being installed on rotor magnet 10 before rotor magnet 10 and position probing magnet 11, Fig. 6 (b) is the stereogram of the rotor magnet 10 after installation site detection magnet 11, and Fig. 6 (c) is the stereogram leading section thermal welding of projection 5 being fixed the rotor magnet 10 after position probing magnet 11.
Make the end face being provided with bracket 7 of rotor magnet 10 relative with the plane of position probing magnet 11, the axle 1 of rotor magnet 10 is inserted in the axis hole 13 of position probing magnet 11 (Fig. 6 (a)).First, by making axle 1 insert in the axis hole 13 of cylindrical portion 12, carry out rotor magnet 10 and position probing magnet 11 roughly determine core, make the projection 5 of rotor magnet 10 become easy with the location in the hole 15 of position probing magnet 11.
Make multiple projections 5 of rotor magnet 10 insert in multiple holes 15 of position probing magnet 11, position probing magnet 11 is mounted to the position (Fig. 6 (b)) abutted with the bracket 7 of rotor magnet 10.Now, the projection 5 of the polygonal shape of rotor magnet 10 is inserted in the hole 15 of position probing magnet 11, because the angle of periphery is reamed, so do not produce movable space, and position probing magnet 11 can be made to align.Therefore, the same core of rotor magnet 10 and position probing magnet 11 can be improved, can the position of precision detection rotor 20 well, so efficiency and the performance of motor 100 can be improved.
By will from the leading section thermal welding of position probing by the projection 5 of the outstanding rotor magnet 10 in the hole 15 of magnet 11, position probing magnet 11 is fixed on rotor magnet 10, forms rotor 20 (Fig. 6 (c), Fig. 3 (a), Fig. 3 (b)) thus.
Fig. 7 is the manufacturing flow chart of the manufacture method of the rotor representing motor of the present embodiment.The manufacture method of the rotor of motor is roughly as described below.
(1) step 1: the processing carrying out axle 1.Further, carry out the shaping of position probing magnet 11, after shaping demagnetization is carried out to position probing magnet 11.
(2) step 2: carry out the shaping of back yoke 3, carries out demagnetization to back yoke 3 after shaping.
(3) step 3: carry out the shaping of plastic magnet 9.That is, by injection mo(u)lding, plastic magnet 9 is formed as one with the outer peripheral face of back yoke 3, make rotor magnet 10.After completing, demagnetization is carried out to rotor magnet 10.
(4) step 4: position probing magnet 11 is installed on rotor magnet 10.Now, the projection 5 of rotor magnet 10 is inserted in the hole 15 of position probing magnet 11, with the mode installation site detection magnet 11 abutted with bracket 7.
(5) step 5: by the leading section thermal welding of projection 5, thus position probing magnet 11 is fixed on rotor magnet 10, make rotor 20.
(6) step 6: rotor 20 is magnetized.
(7) step 7: bearing 21 is pressed into abutting with the cylindrical portion 12 of position probing magnet 11 and the bearing abutting part 4 of rotor magnet 10 along axle 1.
As mentioned above, in the present embodiment, the projection 5 of rotor magnet 10 is made to insert in the hole 15 of position probing magnet 11, position probing magnet 11 is abutted with bracket 7, and by the leading section thermal welding of projection 5, thus position probing magnet 11 is fixed on rotor magnet 10, and shaping cast gate 6 is set in projection 5.Like this, due to the leading section thermal welding of the projection 5 by being provided with cast gate 6, so the place of incision of cast gate 6 can not be given prominence to, and can prevent the outstanding of this place of incision and other location contacts or resin-oatmeal from spilling such unfavorable condition from this place of incision.In addition, owing to not needing to arrange the recess for preventing this place of incision outstanding at the end face of rotor magnet 10 as in the past, so the deterioration of the distortion rate of magnetic force decline and magnetic flux distribution can be prevented, thus efficiency and the performance of motor 100 is improved.
In addition, in the present embodiment, by the leading section thermal welding by projection 5, and position probing magnet 11 is made to be fixed on rotor magnet 10.Like this, owing to mechanically position probing magnet 11 being fixed on rotor magnet 10, so the reliability of assembling can be improved.In addition, owing to position probing magnet 11 can be fixed on rotor magnet 10 by this simple operation, so also can reduce costs.In addition, because the height of heat-fused portion 35 is identical or lower than it with the detected portion 14 of position probing magnet 11, so when assembling motor, heat-fused portion 35 can not contact with molded stator, and can improve the reliability of assembling.
In addition, in the present embodiment, owing to being provided with projection 5 at bracket 7, even if so also can floating of position probing magnet 11 be prevented by bracket 7 and be out of shape being held down by position probing magnet 11 during projection 5 thermal welding, the quality of assembling can be improved.
In addition, in the present embodiment, a bearing 21 is abutted with the bearing abutting part 4 of rotor magnet 10 and positions, another bearing 21 is abutted with the end face of the cylindrical portion 12 of position probing magnet 11 and positions.Like this, the bearing 21 of position probing magnet 11 side is only located by the cylindrical portion 12 of position probing magnet 11, and in rotor 20, the detected portion 14 of position probing magnet 11 and the interval of magnetic detecting element 47 are decided by means of only position probing magnet 11 thus.Therefore, compared with being related to the situation of multiple parts, the management of size and adjustment than being easier to, and can improve assembly precision, can the position of precision detection rotor 20 well, the controlling of motor 100 and the raising of performance and reliability can be realized.In addition, by directly locating with the bearing 21 of position probing magnet 11 by position probing magnet 11 side, can number of components be cut down, also can reduce costs.
In addition, in the present embodiment, the press-in load for bearing 21 supports due to the cylindrical portion 8 of the cylindrical portion 12 and rotor magnet 10 that have position probing magnet 11, so can prevent the distortion of position probing magnet 11, improves the quality of assembling.
In addition, in the present embodiment, make the cylindrical portion of position probing magnet 11 be cylindrical portion 12, but this cylindrical portion also can be the tubular beyond cylindrical shape.In addition, in the present embodiment, make the cylindrical portion of rotor magnet 10 be cylindrical portion 8, but this cylindrical portion also can be the tubular beyond cylindrical shape.
In addition, other effects of present embodiment and the explanation of structure described above in the lump.
Execution mode 2
Fig. 8 is the figure of an example of the structure representing air conditioner of the present embodiment.The off-premises station 320 that air conditioner 300 has indoor set 310 and is connected with indoor set 310.Be equipped with air blast used for indoor machine (not shown) at indoor set 310, be equipped with off-premises station air blast 330 at off-premises station 320.And, in off-premises station air blast 330 and air blast used for indoor machine, use the motor 100 of execution mode 1 as its drive source.By using motor 100 in the critical piece of air conditioner 300 and off-premises station air blast 330 and air blast used for indoor machine, the performance of air conditioner 300 can be improved.
In addition, the motor of execution mode 1 also can be mounted in the electronic equipment beyond air conditioner, also can obtain the effect same with present embodiment in this case.
Structure shown in above execution mode illustrates an example of content of the present utility model, also can combine with other known technologies, can also omit in the scope not departing from main idea of the present utility model or change a part of structure.
Claims (6)
1. a rotor for motor, is characterized in that, comprising:
Axle;
Rotor magnet, it is arranged integratedly with this axle around described axle;
Position probing magnet, it is arranged on an end of the axis of described rotor magnet; And
Pair of bearings, it is installed on described axle in the both sides of described rotor magnet, wherein
Described rotor magnet comprises:
Bracket, it is arranged on the end face of described position probing magnet side; And
Projection, it is arranged on described bracket, and is provided with shaping cast gate,
Described position probing magnet has the hole of inserting for described projection,
Described projection is inserted in the hole, described position probing magnet is abutted with described bracket, and by the leading section thermal welding by described projection, described position probing magnet is fixed on described rotor magnet.
2. the rotor of motor according to claim 1, is characterized in that:
Described rotor magnet has from the outstanding cylindrical portion of the end face of described position probing magnet side in the position by internal side diameter compared with being provided with the position of described bracket,
The end face of the described cylindrical portion of described rotor magnet and the end face of described bracket form the same face,
Described bracket and the described cylindrical portion of described position probing magnet and described rotor magnet abut and are installed on described rotor magnet.
3. the rotor of motor according to claim 1, is characterized in that:
The periphery of described projection is polygonal shape,
Described hole is circular,
Being dimensioned to of described projection and described hole: when described projection being inserted in the hole, the angle of the periphery of described projection can be reamed by the edge in described hole.
4. the rotor of motor according to claim 1, is characterized in that:
The axial length of aspect ratio from one end of the described raised sides of described axle to the end face of described bracket of described projection is short.
5. a motor, is characterized in that, comprising:
The rotor of the motor according to any one of Claims 1-4.
6. an air conditioner, is characterized in that:
Be equipped with motor according to claim 5.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-245325 | 2013-11-27 | ||
| JP2013245325 | 2013-11-27 | ||
| PCT/JP2014/081046 WO2015080077A1 (en) | 2013-11-27 | 2014-11-25 | Electric motor rotor, electric motor, and air conditioner |
| JPPCT/JP2014/081046 | 2014-11-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204290531U true CN204290531U (en) | 2015-04-22 |
Family
ID=52873658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420726908.6U Active CN204290531U (en) | 2013-11-27 | 2014-11-27 | The rotor of motor, motor and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204290531U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110291697A (en) * | 2017-02-10 | 2019-09-27 | 美蓓亚三美株式会社 | The manufacturing method of rotor for electromotor, motor and rotor for electromotor |
-
2014
- 2014-11-27 CN CN201420726908.6U patent/CN204290531U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110291697A (en) * | 2017-02-10 | 2019-09-27 | 美蓓亚三美株式会社 | The manufacturing method of rotor for electromotor, motor and rotor for electromotor |
| US11218042B2 (en) | 2017-02-10 | 2022-01-04 | Minebea Mitsumi Inc. | Rotor for motor |
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