A kind of step motor stator and the motor with the stator
Technical field
The present invention relates to a kind of stepper motors, more particularly, to a kind of step motor stator and with the motor of the stator.
Background technique
Existing two-phase hybrid stepping motor stator laminating structure is illustrated in fig. 1 shown below, and is rushed in the class quadrangle stator of Fig. 1
In piece:
Step motor stator punching 1 has A, B two-phase totally eight main poles, along the circumferential direction uniformly distributed, and stator main pole A, B's is outer
Side both sides are dispersed with the stator main pole yoke portion being connected with main pole, A phase main pole yoke portion 3 and 4, B phase main pole yoke portion 6 and 7, stator main pole
A, the inside of B is evenly distributed with several stator primary minimum teeth 9, and four angles of class quadrangle stepping motor stator core punching are evenly distributed with four
A fixation hole 8.
The connected yoke portion 6,7 of the connected yoke portion 3 of A phase main pole 2,4, B phase main pole 5, the two due to fixation hole 8 presence, two
Phase yoke portion thickness is unequal, while the presence of fixation hole 8 can also cause motor magnetic circuit asymmetric, and the output torque of motor is caused to subtract
The variation of small and running precision and stationarity.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of step motor stators
And the motor with the stator.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of step motor stator, the stator punching including quadrilateral structure are uniformly distributed on described four angles of stator punching
Four stator fixing holes, the stator punching include stator main pole A phase and stator main pole B phase, the stator main pole A phase and stator
Both sides are dispersed with the yoke portion being connected with main pole on the outside of main pole B phase, and the stator phase yoke portion main pole A is moved along stator fixing hole direction
Dynamic, the minimum range in the stator phase yoke portion main pole A and stator fixing hole is L1, and wherein L1 is that stator main pole A phase yoke is thick
Degree, the stator main pole B phase yoke portion with a thickness of L0, L1 >=0.8*L0.
The motor fixing hole is radially moved to the maximum position that quadrangle iron core allows to quadrangle iron core outside.
The mobile area in the stator phase yoke portion main pole A is the increased groove area of motor.
The stator fixing hole can remove completely, and the core stamping is fixed by front and rear cover and screw, described
Screw position be original sub- fixation hole position.
The stator phase yoke portion main pole A is moved along former stator fixing hole direction, the stator phase yoke portion main pole A and original
The minimum range of stator fixing hole is L1.
A kind of motor with stator, including rotor, which is characterized in that the motor further includes the stator.
Compared with prior art, the invention has the following advantages that
(1) symmetry for improving motor A, B two-phase promotes the precision and stationarity of motor operation;
(2) groove area of motor is increased, the output torque of motor is improved.
Detailed description of the invention
Fig. 1 is existing two-phase hybrid stepping motor stator laminating structure schematic diagram;
Wherein 1 is stator punching, and 2 be stator A phase main pole, and 3,4 be A phase main pole yoke portion, and 5 be stator B phase main pole, and 6,7 be B
Phase main pole yoke portion, 8 be fixation hole, and 9 be stator primary minimum tooth.
Fig. 2 is the two-phase hybrid stepping motor stator laminating structure schematic diagram of embodiment 1;
Wherein 12 be the first stator A phase main pole, and 13 and 14 be the first A phase main pole yoke portion, and 18 be the first fixation hole, and 19 be the
One dash area;
Fig. 3 is the two-phase hybrid stepping motor stator laminating structure schematic diagram of embodiment 2;
Wherein 22 be the second stator A phase main pole, and 23 and 24 be the 2nd A phase main pole yoke portion, and 28 be former fixation hole.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is a part of the embodiments of the present invention, rather than whole embodiments.Based on this hair
Embodiment in bright, those of ordinary skill in the art's every other reality obtained without making creative work
Example is applied, all should belong to the scope of protection of the invention.
In order to reduce the asymmetry of motor magnetic circuit and make full use of class quadrangle stator core stamping sheet.
Embodiment 1
As shown in Fig. 2, the first fixation hole 18 to be radially moved to quadrangle iron core outside to the permission of quadrangle iron core
Maximum position guarantee at this time while to the yoke portion 13 and 14 of the mobile first stator A phase main pole 12 in 18 direction of the first fixation hole
The minimum range of the first phase main pole yoke portion 13 A and the 14 to the first fixation hole 18 is L1 (the thick degree L1 of A phase yoke), the thickness in B phase yoke portion
Degree be L0, L1 >=0.8*L0, meanwhile, dash area 19 be the increased groove area of motor.L0 is that the minimum yoke of motor demand is thick.
Embodiment 2
As shown in figure 3, on the basis of embodiment 1, motor fixing hole can be removed completely on core stamping, motor
It is fixed by front and rear cover and screw, the position of screw is former 28 position of fixation hole.Simultaneously to former 28 direction of fixation hole
The yoke portion 23 and 24 of mobile second stator A phase main pole 22, guarantee the 2nd A phase main pole yoke portion 23 and 24 at this time with a thickness of L1, B phase
Yoke portion with a thickness of L0, L1 >=0.8*L0, meanwhile, dash area 19 be the increased groove area of motor.L0 be motor demand most
Small yoke is thick.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection scope subject to.