CN209659024U - A kind of motor in axial magnetic field stator core - Google Patents

Abstract

The utility model discloses a kind of motor in axial magnetic field stator cores, lower core and upper core including mounted on top, and the lower core is for being arranged copper wire winding, and the upper core is for making the stator slot shape of the lower core at closed slot.Motor in axial magnetic field stator core provided by the utility model reduces the notch harmonic wave of the stator slot of stator core, and stator slot is made to can be suitably used for the copper wire winding of different structure, so as to provide performance better motor.

Description

A kind of motor in axial magnetic field stator core

Technical field

The utility model relates to technical field of motors, in particular to a kind of motor in axial magnetic field stator core.

Background technique

Stator core 1 includes stator yoke and multiple stator tooths 11, as shown in Figure 1, for for placing copper between stator tooth 11 The stator slot 12 of line.

Magnetic field when motor operation is divided into fundamental wave and harmonic wave, and the harmonic wave of the notch position of stator slot 12 is in a mess, does not do and locate If reason, the eddy-current loss that will lead to the copper wire winding in stator slot 12 is larger.Currently, in order to reduce the notch of stator slot 12 Harmonic wave, the general method using the width of rebate for reducing the stator slot 12 on stator core 1, the i.e. width of rebate of stator slot 12 are small Width inside slot, as shown in Fig. 1.The stator core 1 of this structure, is only applicable to circular copper wire winding, is not suitable for The better flat copper line winding group of performance, motor performance are poor.

Therefore, the notch harmonic wave for how providing a kind of stator slot is few, can be suitably used for the axial magnetic of different structure copper wire winding Field motor stator core becomes those skilled in the art's technical problem urgently to be resolved.

Utility model content

In view of this, the present invention provides a kind of motor in axial magnetic field stator cores, to reduce determining for stator core The notch harmonic wave and stator slot of pilot trench can be suitably used for the copper wire winding of different structure.

To achieve the above object, the utility model provides the following technical solutions:

A kind of motor in axial magnetic field stator core, lower core and upper core including mounted on top, the lower core are used for Copper wire winding is set, and the upper core is for making the stator slot shape of the lower core at closed slot.

Preferably, it is provided with the first stator slot and the first stator tooth on the lower core, is provided on the upper core Two stator slots and the second stator tooth；

First stator slot is for placing copper wire winding, second stator tooth and first stator tooth horizontal cross-section Geomery is consistent, and is arranged in a one-to-one correspondence both when stacking, the flank of tooth of first stator tooth and the yoke portion of the upper core It touches.

It preferably, further include shell and fixed plate for fixing for holding the lower core and upper core, it is described The upper end setting of shell is for placing the first opening of the lower core and upper core, and the side setting of the shell is for described The second opening that the copper wire of copper wire winding is drawn, the fixed plate are placed on the intracorporal upper core of the shell for compressing On.

Preferably, the bottom center position of the shell is provided with first through hole, the center setting of the fixed plate There are the second through-hole, the first through hole and the second through-hole for passing through motor shaft.

Preferably, annular locating lug boss is provided with around the first through hole on the shell.

Preferably, position corresponding with second stator tooth is provided with positioning through slot, the positioning in the fixed plate Through slot is equipped with second stator tooth.

Preferably, the lateral location that the fixed plate is located at second aperture position is provided with raised positioning region, described The width of raised positioning region is corresponding with the width of second opening, and the protrusion positioning region is slidably connected at second opening It is interior.

Preferably, the shell and the fixed plate are non-magnetic material.

Preferably, the medial surface of the shell is provided with mounting table, the mounting table close to the position of first opening For placing the fixed plate.

Preferably, the height of second stator tooth is less than the height of first stator tooth.

It can be seen from the above technical proposal that a kind of motor in axial magnetic field stator core provided by the utility model, including The lower core and upper core of mounted on top, lower core are used to make the stator slot shape of lower core for copper wire winding, upper core to be arranged At closed slot.By the way that the upper core for sealing and being connected magnetic circuit is arranged on lower core, so that the stator slot on lower core is not Need to reduce the width of notch position, so that it may weaken the harmonic wave of the notch position of the stator slot of lower core, so that lower iron Both settable circular copper wire winding in the slot of the stator slot of core, may also set up the flat copper line winding group of molding, can be suitably used for stator slot The copper wire winding of different structure；And therefore the performance of flat copper line winding group it is more excellent can also to provide performance better than circular copper wire winding Motor in axial magnetic field.The stator core of semi-open slot structure in compared to the prior art, the axial magnetic field of the utility model The notch harmonic wave of motor stator core, stator slot is less, and stator slot can be suitably used for the copper wire winding of different structure, be capable of providing The better stator core of performance.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of stator core in the prior art；

Fig. 2 is the lower core and upper core stacked structure schematic diagram of stator core provided by the embodiment of the utility model；

Fig. 3 is the structural schematic diagram of lower core provided by the embodiment of the utility model；

Fig. 4 is the structural schematic diagram of upper core provided by the embodiment of the utility model；

Fig. 5 is the structural schematic diagram of shell provided by the embodiment of the utility model；

Fig. 6 is the structural schematic diagram of fixed plate provided by the embodiment of the utility model；

Fig. 7 is that lower core provided by the embodiment of the utility model and upper core are placed into the intracorporal structural schematic diagram of shell；

Fig. 8 is the structural schematic diagram after stator core provided by the embodiment of the utility model is fixed.

1, stator core, 11, stator tooth, 12, stator slot, 2, stator core, 21, upper core, the 211, second stator tooth, 212, the second stator slot, 22, lower core, the 221, first stator tooth, the 222, first stator slot, 23, copper wire winding, 24, shell, 241, the first opening, the 242, second opening, 243, mounting table, 244, annular locating lug boss, 245, first through hole, 246, bolt company Connect hole, 25, fixed plate, 251, raised positioning region, 252, positioning through slot, the 253, second through-hole.

Specific embodiment

The utility model discloses a kind of motor in axial magnetic field stator cores, to reduce the notch of the stator slot of stator core Harmonic wave and stator slot can be suitably used for the copper wire winding of different structure.

As shown in Figure 1, for the stator core 1 of motor in axial magnetic field in the prior art, at the stator slot 12 of stator core 1 It is provided with notch (opening between two i.e. adjacent stator tooths 11), and the harmonic wave of the notch position of stator core 1 is in a mess, If being not processed, the eddy-current loss that will lead to the copper wire winding in stator slot 12 is larger.Currently, in order to reduce stator slot 12 The harmonic wave of notch, the general method using the width of rebate for reducing the stator slot 12 on stator core 1.Reduce the slot of stator slot 12 After mouth width degree, it is only applicable to circular copper wire winding in stator slot 12, and is not suitable for the better flat copper line winding group of performance, to influence The performance of motor.

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 2 to Fig. 8 is please referred to, the utility model discloses a kind of motor in axial magnetic field stator cores, including are stacked up and down Lower core 22 and upper core 21.

Wherein, lower core 22 and upper core 21 are magnetic conductive material, and lower core 22 is axial for winding copper wire winding 23 Effective stator core of magnetic field electric motor, upper core 21 are used to make the stator slot shape on lower core 22 at closed slot, weaken notch position The harmonic wave of appearance is set, the eddy-current loss of copper wire winding 23 in stator slot is reduced.On upper core 21 and not set copper wire winding 23, on Iron core 21 is used to that the notch of the stator slot of lower core 22 to be sealed and is connected magnetic circuit, and passes through the stator tooth on upper core 21 Position magnetic conduction, so that iron core of the stator slot shape of lower core 22 at closed slot structure.21 essence of upper core is for stator Closed sealing magnetic conductive part, can also be named as other titles at the notch of slot, as long as having above-mentioned function.

The stator core of the motor in axial magnetic field of the utility model, by being set on effective stator core, that is, lower core 22 The upper core 21 for sealing and being connected magnetic circuit is set, so that the stator slot on lower core 22 does not need to reduce the width of notch position Degree is not needed using semi-open slot structure (locating slot that the width of notch position reduces), so that it may weaken lower core 22 The harmonic wave of the notch position of stator slot, so that both settable circular copper wire windings in the slot of the stator slot of lower core 22, it can also Molding flat copper line winding group is set, and therefore the performance of flat copper line winding group also can provide performance more better than circular copper wire winding Excellent motor in axial magnetic field.The stator core of semi-open slot structure in compared to the prior art, the axial magnetic of the utility model The notch harmonic wave of field motor stator core, stator slot is less, and stator slot can be suitably used for the copper wire winding 23 of different structure, can The better stator core of performance is provided, to keep motor performance more preferable.

Specifically, being provided with the first stator slot 222 and the first stator tooth 221 on lower core 22, it is provided on upper core 21 Second stator slot 212 and the second stator tooth 211.First stator slot 222 is for placing copper wire winding 23.In order to preferably to first The notch of stator slot 222 is sealed and is connected magnetic circuit, so that the harmonic wave of the notch position of the first stator slot 222 is avoided to generate, First stator slot 222 is arranged in a one-to-one correspondence with the second stator slot 212, and the first stator tooth 221 and the second stator tooth 211 correspond Setting, the first stator tooth 221 are consistent with the horizontal cross sectional geometry size of the second stator tooth 211.In order to facilitate place flat type copper wire around Group, the notch of the first stator slot 222 and the equivalent width of slot bottom.When stacking, the flank of tooth and the upper core 21 of the first stator tooth 221 Yoke portion touches, and the first stator tooth 221 and the corresponding placement of the second stator tooth 211.

It in one embodiment, further include shell 24, shell 24 is for holding stacked lower core 22 and upper core 21 , the upper end setting of shell 24 is for placing the first opening 241 of lower core 22 and upper core 21, the side setting of shell 241 The second opening 242 that copper wire for copper wire winding 23 is drawn.For the fixed lower core 22 and upper iron overlayed in shell 24 Core 21 further includes the fixed plate 25 for compressing lower core 22 and upper core 21.When stacking, the yoke portion of lower core 22 is close to shell 24 bottom surface is placed, and upper core 21 is placed on the flank of tooth of lower core 22.

Wherein, the bottom center position of shell 24 is provided with first through hole 245, and the center of fixed plate 25 is provided with Two through-holes 253.First through hole 245 and the second through-hole 253 pass through for motor shaft, and the shape of the two and position are corresponding, size phase Together.First through hole 245 and the second through-hole 253 are correspondingly arranged with the hole on lower core 22 and upper core 21.

Further, annular locating lug boss 244 is provided with around the first through hole 245 on shell 24.Specifically, cyclic annular fixed Position boss 244 is for positioning the inside of the copper wire winding 23 on lower core 22.It should be understood that copper wire winding 23 is interior Side refers to the side close to the axis hole position of 22 center of lower core.

The upper core 21 of the utility model rotates during the work time in order to prevent, in fixed plate 25 with the second stator The corresponding position of tooth 211 is provided with positioning through slot 252, and positioning through slot 252 is equipped with the second stator tooth 211.Fixed plate 25 When compressing stacked lower core 22 and upper core 21, positioning through slot 252 is set on the second stator tooth 211 of corresponding position, is had Effect prevents upper core 21 from circumferentially rotating with respect to lower core 22, and the relative position for improving upper core 21 and lower core 22 is reliable Property.Specifically, being reconnected on shell 24 after fixed plate 5 is set on the second stator tooth 211 of corresponding position.5 He of fixed plate Shell 24 can be connected by using modes such as bolt locking, gluing, clampings, can also be normal using other skilled in the art It is detachable be fixedly connected with mode.

In a specific embodiment, it after fixed plate 25 is attached on upper core 21 in order to prevent, sends out under the effect of external force Raw rotation, the lateral location that fixed plate 25 is located at the second opening 242 are provided with raised positioning region 251, and raised positioning region 251 is slided It is connected in the second opening 242, the width of raised positioning region 251 is corresponding with the width of the second opening 242, to avoid fixed plate 25 drive upper core 21 to rotate, and guarantee the opposite stacked position of upper core 21 and lower core 22.In order to facilitate the installation of and dismounting is solid Fixed board 25, raised positioning region 251 are slidably connected on the side wall of the second opening 242.

It should be understood that as shown in Figure 5 and Figure 6, when the inner cavity that shell 24 places upper core 21 and lower core 22 is cylinder When shape cavity, the edge shape of fixed plate 25 is to match the circle being correspondingly arranged with the inner cavity of shell 24, wherein raised positioning region 251 are arranged on the side of 25 circular contour of fixed plate.

It should be understood that leakage field in order to prevent, shell 24 and fixed plate 25 are non-magnetic material.

In order to facilitate the connection of fixed plate 25 and shell 24, the medial surface of shell 24 is set close to the position of the first opening 241 It is equipped with mounting table 243, mounting table 243 is for placing fixed plate 25.In order to enable fixed plate 25 can compress upper core 21 under Iron core 22, the whole height and the sum of the yoke portion height of upper core 21 of lower core 22 are consistent with the table surface height of mounting table 243.It needs It is noted that the table surface height of mounting table 243 refers to the height of the inner bottom surface of the daylight opening DLO shrinking away from theshell body 24 of mounting table 243.In In one specific embodiment, annular resting surface that mounting table 243 is integrated.

In order to facilitate connection, it can be provided with the threaded hole for connection on the annular resting surface, in fixed plate 25 Position corresponding with above-mentioned threaded hole is provided with through-hole, and the screw or bolt for connection pass through the above-mentioned through-hole and be connected to In the threaded hole.Certainly, implement in placement at other, it is identical that mounting table 243 is also possible to multiple height uniformly at intervals Face.

Wherein, in order to reduce the occupied space of total, save the cost, the height of the second stator tooth 211 is less than first The height of stator tooth 221.

In one embodiment, the outside of shell 24 is provided with uniformly distributed bolt connecting hole 246, to facilitate shell 24 It is connect with another housing parts.

The center of upper core 21 and lower core 22 is provided with the through-hole passed through for motor shaft, when installation, upper iron Core 21 is installed close to the rotor position of motor.

Motor in axial magnetic field stator core provided by the utility model makes lower core using upper and lower two layers spliced iron core 22 realize closed type structure, and the harmonic wave of the notch position of the first stator slot 222, reduces the when reducing axial direction electric machine operation The eddy-current loss of copper wire in one stator slot 222.

In the description of this programme, it is to be understood that the instructions such as term " on ", "lower", "vertical", "inner", "outside" Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model and simplification Description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, constructed and grasped with specific orientation Make, therefore should not be understood as the limitation to this programme.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.In the description of this programme, the meaning of " plurality " is two or more, Unless otherwise specifically defined.

Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.

The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The widest scope consistent with features of novelty.

Claims (10)

1. a kind of motor in axial magnetic field stator core, which is characterized in that lower core (22) and upper core including mounted on top (21), the lower core (22) is for being arranged copper wire winding (23), and the upper core (21) is for making the lower core (22) Stator slot shape is at closed slot.

2. motor in axial magnetic field stator core according to claim 1, which is characterized in that be arranged on the lower core (22) There are the first stator slot (222) and the first stator tooth (221), the second stator slot (212) and are provided on the upper core (21) Two stator tooths (211)；

First stator slot (222) is for placing copper wire winding (23), second stator tooth (211) and first stator Tooth (221) horizontal cross sectional geometry size is consistent, and is arranged in a one-to-one correspondence both when stacking, the tooth of first stator tooth (221) Face and the yoke portion of the upper core (21) touch.

3. motor in axial magnetic field stator core according to claim 2, which is characterized in that further include for hold it is described under The shell (24) and fixed plate for fixing (25) of iron core (22) and upper core (21), the upper end of the shell (24), which is arranged, to be used Institute is used in the side setting of the first opening (241) for placing the lower core (22) and upper core (21), the shell (24) The second opening (242) that the copper wire of copper wire winding (23) is drawn is stated, the fixed plate (25) is placed on the shell for compressing (24) on the upper core (21) in.

4. motor in axial magnetic field stator core according to claim 3, which is characterized in that in the bottom surface of the shell (24) Heart position is provided with first through hole (245), and the center of the fixed plate (25) is provided with the second through-hole (253), and described One through-hole (245) and the second through-hole (253) are for passing through motor shaft.

5. motor in axial magnetic field stator core according to claim 4, which is characterized in that described on the shell (24) Annular locating lug boss (244) are provided with around first through hole (245).

6. motor in axial magnetic field stator core according to claim 3, which is characterized in that on the fixed plate (25) and institute It states the corresponding position of the second stator tooth (211) and is provided with positioning through slot (252), the positioning through slot (252) is fixed with described second Sub- tooth (211) is equipped with.

7. motor in axial magnetic field stator core according to claim 3, which is characterized in that the fixed plate (25) is located at institute The lateral location for stating the second opening (242) position is provided with raised positioning region (251), the width of the protrusion positioning region (251) Corresponding with the second opening width of (242), the protrusion positioning region (251) is slidably connected at second opening (242) It is interior.

8. motor in axial magnetic field stator core according to claim 3, which is characterized in that the shell (24) and described solid Fixed board (25) is non-magnetic material.

9. motor in axial magnetic field stator core according to claim 3, which is characterized in that the medial surface of the shell (24) Position close to first opening (241) is provided with mounting table (243), and the mounting table (243) is for placing the fixation Plate (25).

10. motor in axial magnetic field stator core according to claim 2, which is characterized in that second stator tooth (211) Height be less than first stator tooth (221) height.