CN109617268A - A kind of stepper motor - Google Patents
A kind of stepper motor Download PDFInfo
- Publication number
- CN109617268A CN109617268A CN201910074779.4A CN201910074779A CN109617268A CN 109617268 A CN109617268 A CN 109617268A CN 201910074779 A CN201910074779 A CN 201910074779A CN 109617268 A CN109617268 A CN 109617268A
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- Prior art keywords
- stator
- stepper motor
- bearing
- mounting platform
- bearing bracket
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- 238000009413 insulation Methods 0.000 claims abstract description 39
- 238000004804 winding Methods 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 238000003780 insertion Methods 0.000 claims abstract description 3
- 230000037431 insertion Effects 0.000 claims abstract description 3
- 210000005069 ears Anatomy 0.000 claims description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/08—Insulating casings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The present invention relates to a kind of stepper motor, which includes stator module, rotor assembly, drive end bearing bracket, rear end cap；Stator module include stator, enameled wire, leg insertion stator winding slot insulation end shield；The enameled wire is wound on insulation end shield, forms the coiling group of each magnetic pole of stator；Rotor assembly includes rotor sheet, magnet steel, shaft；The both ends of the shaft are respectively by being installed on the bearing support of the bearing of the bearing chamber of drive end bearing bracket and the bearing chamber of rear end cap；Drive end bearing bracket is equipped with the first mounting platform of outwardly convex, the spring washer accommodating chamber for accommodating spring washer is equipped on the inside of first mounting platform, the spring washer accommodating chamber is communicated with the bearing chamber for being located at drive end bearing bracket, the output end of the shaft sequentially passes through the bearing of the bearing chamber positioned at drive end bearing bracket, stretches out after the shaft outlet hole on the spring washer and the first mounting platform of spring washer accommodating chamber.Its output torque can be improved in the stepper motor under the premise of not increasing overall dimensions.
Description
Technical field
The present invention relates to technical field of motors, are specifically related to a kind of stepper motor.
Background technique
Stepper motor is the opened loop control motor that electric impulse signal is changed into angular displacement or displacement of the lines.Stepper motor conduct
Executive component is one of critical product of electromechanical integration, is widely used in various automatic control systems.With microelectronics
It is growing day by day with the demand of the development of computer technology, stepper motor, there is application in each national economy field.
With the development of the times, various product all changes to small and exquisite exquisiteness route, and major part needs dynamical system
Product keeps for the installation space of motor will be more and more limited, but the requirement to output torque is higher and higher.
Summary of the invention
Present invention aims at provide a kind of stepper motor.The stepper motor mentions under the premise of not increasing overall dimensions
Its high output torque, will be more and more limited to the installation space of motor with solution, but the requirement to output torque is higher and higher
The problem of.
Above-mentioned purpose that the invention is realized by the following technical scheme:
A kind of stepper motor, including stator module, rotor assembly, drive end bearing bracket, rear end cap；
The stator module include stator, enameled wire, leg insertion stator winding slot insulation end shield；The enameled wire
It is wound on insulation end shield, forms the coiling group of each magnetic pole of stator；
The rotor assembly includes rotor sheet, magnet steel, shaft；The both ends of the shaft are respectively by being installed on the axis of drive end bearing bracket
Hold the bearing support of the bearing of room and the bearing chamber of rear end cap；
The drive end bearing bracket is equipped with the first mounting platform of outwardly convex, is equipped on the inside of first mounting platform for accommodating
The spring washer accommodating chamber of spring washer, the spring washer accommodating chamber are communicated with the bearing chamber for being located at drive end bearing bracket, the output end of the shaft
Sequentially pass through the bearing of the bearing chamber positioned at drive end bearing bracket, on the spring washer and the first mounting platform of spring washer accommodating chamber
Shaft outlet hole after stretch out.
The present invention in one embodiment, the insulation end shield includes preceding insulation end shield, insulate end shield afterwards；Before described
Insulation end shield, rear insulation end shield include matching with the winding slot medial surface of stator and being tightly attached to the leg of winding slot medial surface
Portion, and positioned at the block portion of stator one end, both the leg and block portion are integrally formed；The block portion includes the second peace
Assembling platform, the collar stop formed along the second mounting platform edge to the direction extension perpendicular to the second mounting platform,
And on the inside of the collar stop and internal stop that its fixing end connects with the second mounting platform；Second mounting platform and fixed
Sub- end face offsets, and collar stop, internal stop are located at the outside of stator；The fixing end of the leg connects with the second mounting platform,
And second offers the opening to match with foot cross sectional shape on mounting platform；Insulation end shield, rear insulation end shield are each before described
From leg quantity and internal stop quantity it is identical as the quantity of magnetic pole of the stator；It is the collar stop, the second mounting platform, interior
The slot that the slot and foot's medial surface that block is formed are formed is the winding space of enameled wire.
The present invention in one embodiment, the section of the collar stop is regular polygon, the collar stop
Each edge is equipped with the wire column for guiding enameled wire.
The present invention in one embodiment, the drive end bearing bracket is equipped with the gear for the block portion of insulation end shield before accommodating
Every portion's accommodating chamber, the rear end cap is equipped with the block portion accommodating chamber in the block portion for the end shield that insulate after accommodating.
The present invention in one embodiment, the free end of the free end of the collar stop and internal stop is located at same
In plane, the plane is parallel with the second mounting platform.
The present invention in one embodiment, the rotor assembly further include be sheathed in shaft and be located at bearing with turn
Bushing between sub-pieces.
The present invention in one embodiment, the extension end of the shaft is equipped with flat position.
The present invention in one embodiment, the drive end bearing bracket is additionally provided with two opposite mounting ears, on the mounting ear
Offer screw hole.
The present invention in one embodiment, the magnet steel be 0.8mm thickness N42 high energy product magnet steel；The step
It is 20 × 20 × 20 into rating of machine.
Spring washer is installed on drive end bearing bracket by the present invention, can not only reduce the thickness of rear end cap, and due to abundant
Using the thickness of the first mounting platform of drive end bearing bracket, the thickness of drive end bearing bracket can be kept constant under the premise of meeting drive end bearing bracket intensity,
Thus under the premise of stepper motor overall dimension is constant, the thickness of stator can be increased, to improve the power output of stepper motor
Square.
The present invention in one embodiment, by reducing the winding number of each coiling group, reduces the height in block portion, further
The thickness of drive end bearing bracket, rear end cap is reduced again, thus under the premise of stepper motor overall dimension is constant, the thickness of stator can be increased
Degree, to improve the output torque of stepper motor.
The present invention in one embodiment, selects the N42 high energy product magnet steel of 0.8mm thickness, cooperates spring washer
Be installed on drive end bearing bracket, and reduce the winding number of each coiling group, reduce the design of the height in block portion, in specification be 20 × 20 × 20
Stepper motor, moment can be output it and increase to original twice.
Detailed description of the invention
Included attached drawing is used to provide that a further understanding of the embodiments of the present application, and which constitute one of specification
Point, for illustrating presently filed embodiment, and with verbal description come together to illustrate the principle of the application.Under it should be evident that
Attached drawing in the description of face is only some embodiments of the present application, for those of ordinary skill in the art, is not paying wound
Under the premise of the property made is laborious, it is also possible to obtain other drawings based on these drawings.In the accompanying drawings:
Fig. 1 is the perspective view of one stepper motor of the embodiment of the present invention；
Fig. 2 is the cross-sectional view of one stepper motor of the embodiment of the present invention；
Fig. 3 is the perspective view of the stator of one stepper motor of the embodiment of the present invention；
Fig. 4 is the one view stereo figure of the preceding insulation end shield of one stepper motor of the embodiment of the present invention；
Fig. 5 is another view stereo figure of the preceding insulation end shield of one stepper motor of the embodiment of the present invention；
Fig. 6 is the perspective view of two stepping motor of the embodiment of the present invention；
Fig. 7 is the cross-sectional view of two stepping motor of the embodiment of the present invention.
In figure, 1, drive end bearing bracket；2, rear end cap；3, stator；4, enameled wire；5, leg；6, winding slot；7, magnetic pole；8, rotor
Piece；9, magnet steel；10, shaft；11, bearing；12, bushing；13, the first mounting platform；14, spring washer；15, spring washer accommodating chamber；
16, preceding insulation end shield；17, insulate end shield afterwards；18, the second mounting platform；19, collar stop；20, internal stop；21, wire column；
22, block portion accommodating chamber；23, mounting ear；24, screw hole.；
Specific embodiment
In order to facilitate the understanding of those skilled in the art, being carried out below in conjunction with attached drawing and embodiment to the present invention further
Description.
Unless not defining, the technical term or scientific term used herein, which is should be in fields of the present invention, to be had
The ordinary meaning that the personage of general technical ability is understood.It is to be appreciated that term " center ", "upper", "lower", "top", "bottom",
The orientation or positional relationship of the instructions such as "inner", "outside", "left", "right" is to be based on the orientation or positional relationship shown in the drawings, and is only
For the convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have specific side
Position is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " first ", " the
Two " and similar word be not offered as any sequence, quantity or importance, and be used only to distinguish different composition portions
Point.For the ordinary skill in the art, can understand depending on concrete condition above-mentioned term in the present invention specifically contain
Justice.
Embodiment one
Referring to Fig. 1, Fig. 2, its structure of the present embodiment stepper motor includes 3 component of stator, rotor assembly, drive end bearing bracket 1, rear end
Lid 2.
3 component of stator include stator 3, enameled wire 4, leg 5 be embedded in stator 3 winding slot 6 insulation end shield；It is described
Enameled wire 4 is wound on insulation end shield, forms the coiling group of each magnetic pole 7 of stator 3.
The rotor assembly includes rotor sheet 8, magnet steel 9, shaft 10；The both ends of the shaft 10 are respectively by being installed on front end
The bearing 11 of the bearing Room 11 of the bearing 11 and rear end cap 2 of the bearing Room 11 of lid 1 supports.In the present embodiment, the rotor
Component further includes the bushing 12 being sheathed in shaft 10 and between bearing 11 and rotor sheet 8.It is described by this present embodiment
The quantity of rotor sheet 8 and bearing 11 is 2, thus the quantity of bushing 12 also mutually should be 2.The extension end of the shaft 10 is equipped with flat
Position, to improve the stability installed and used.
The drive end bearing bracket 1 is equipped with the first mounting platform 13 of outwardly convex, is equipped with and uses on the inside of first mounting platform 13
In the spring washer accommodating chamber 15 for accommodating spring washer 14, the spring washer accommodating chamber 15 is communicated with the bearing Room 11 for being located at drive end bearing bracket 1, institute
The output end for stating shaft 10 sequentially passes through the bearing 11 positioned at the bearing Room 11 of drive end bearing bracket 1, positioned at the spring of spring washer accommodating chamber 15
It is stretched out after shaft outlet hole on washer 14 and the first mounting platform 13.
Spring washer 14 is installed on drive end bearing bracket 1 by the present invention, can not only reduce the thickness of rear end cap 2, and due to
The thickness for making full use of 1 first mounting platform 13 of drive end bearing bracket, can keep drive end bearing bracket 1 under the premise of meeting 1 intensity of drive end bearing bracket
Thickness is constant, thus under the premise of stepper motor overall dimension is constant, the thickness of stator 3 can be increased, to improve stepping electricity
The output torque of machine.
In the present embodiment, the insulation end shield includes preceding insulation end shield 16, rear insulation end shield 17.In the present embodiment, institute
Insulation end shield 16 is identical with rear insulation end shield 17 before stating, to simplify the description, herein only to the structure of preceding insulation end shield 16
It is described in detail.Referring to fig. 4, Fig. 5, it is described before insulation end shield 16 include matching with 6 medial surface of winding slot of stator 3 and tightly
It is affixed on the leg 5 of 6 medial surface of winding slot, and positioned at the block portion of 3 one end of stator, both the leg 5 and block portion one
Injection molding.The block portion includes the second mounting platform 18, along 18 edge of the second mounting platform to perpendicular to the second peace
The direction of assembling platform 18 extends and the collar stop 19 of formation, and positioned at 19 inside of collar stop and its fixing end and the second peace
The internal stop 20 that assembling platform 18 connects.In the present embodiment, the free end of the free end of the collar stop 19 and internal stop 20
In the same plane, the plane is parallel with the second mounting platform 18, i.e., the height of the free end of the described collar stop 19 with it is interior
The free end height of block 20 is identical.Referring to fig. 2, second mounting platform 18 offsets with 3 end face of stator, collar stop 19,
Internal stop 20 is located at the outside of stator 3.Referring to fig. 4, Fig. 5, the fixing end of the leg 5 connect with the second mounting platform 18, and
The opening to match with foot cross sectional shape is offered on second mounting platform 18.5 quantity of leg of insulation end shield 16 before described
And the quantity of internal stop 20 is identical as the quantity of 3 magnetic pole 7 of stator, in the present embodiment, 5 quantity of leg of preceding insulation end shield 16,
The quantity of internal stop 20, the quantity of 3 magnetic pole 7 of stator are 8.The collar stop of insulation end shield 16, rear insulation end shield 17 before described
19, the slot that the slot and foot's medial surface that the second mounting platform 18, internal stop 20 are formed are formed is the winding space of enameled wire 4.
In the present embodiment, the section of the collar stop 19 is octagon, and each edge of the collar stop 19, which is equipped with, to be used for
Guide the wire column 21 of enameled wire 4.The wire column 21 before preceding insulation end shield 16, rear insulation end shield 17 also do not carry out coiling,
It is higher by plane where 19 free end of collar stop, to facilitate coiling；Current insulation end shield 16, rear insulation 17 coiling of end shield are completed
Afterwards, wire column 21 need to be trimmed, it is made not to be higher by plane where 19 free end of collar stop.
Referring to fig. 2, the drive end bearing bracket 1 is equipped with the block portion accommodating chamber 22 for the block portion of insulation end shield 16 before accommodating,
The rear end cap 2 is equipped with the block portion accommodating chamber 22 in the block portion for the end shield 17 that insulate after accommodating.In the present embodiment, described
Block portion accommodating chamber 22 is positive octagonal holding tank, and depth is identical as the height of collar stop 19, and enameled wire 4 is in block portion
The height of wound section is identical as the height of collar stop 19, then can further be dropped again by the winding number for reducing coiling group
The thickness of low drive end bearing bracket 1, rear end cap 2, thus under the premise of stepper motor overall dimension is constant, the thickness of stator 3 can be increased,
To further increase the output torque of stepper motor.
In the present embodiment, when stepper motor specification be 20 × 20 × 20, and the magnet steel 9 select 0.8mm thickness N42
Spring washer 14 is installed on drive end bearing bracket 1 by above-mentioned, and reduces the winding number of each coiling group by high energy product magnet steel 9, reduces gear
(1 thickness of drive end bearing bracket is set to reduce 1.2mm, 2 thickness of rear end cap reduces 3.8mm, and 3 thickness of stator increases every the design of the height in portion
5mm), moment can be output it and increases to original twice.
Embodiment two
Fig. 6, Fig. 7 show another embodiment of stepper motor of the present invention.The stepper motor, including 3 component of stator, rotor
Component, drive end bearing bracket 1, rear end cap 2.In the present embodiment, the structure and embodiment of 3 component of stator, rotor assembly, rear end cap 2
As soon as stepper motor counter structure is identical, it is not described in detail herein.
In the present embodiment, drive end bearing bracket 1 and the drive end bearing bracket 1 of one stepper motor of embodiment are essentially identical, the difference is that:
The drive end bearing bracket 1 is additionally provided with two opposite mounting ears 23, and the opposite visual angle Fig. 6, two mounting ear 23 is located at drive end bearing bracket 1
Arranged on left and right sides face offers screw hole 24 on the mounting ear 23.1 mounting hole of drive end bearing bracket of general stepper motor with by front end
Lid 1, stator 3, rear end cap 2 be fixed by screws in screw hole together be it is general, it is preceding in order to guarantee the mounting condition of client
1 mounting hole of end cap must reserve enough depth, this limits the thickness of drive end bearing bracket 1.The present embodiment is by additionally adding containing spiral shell
The mounting ear 23 in hole 24 can reduce the thickness of drive end bearing bracket 1 under the premise of meeting mounting condition, so as to increase the thickness of stator 3
Add, and then increases the output torque of stepper motor.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (9)
1. a kind of stepper motor, it is characterised in that: including stator module, rotor assembly, drive end bearing bracket, rear end cap；
The stator module include stator, enameled wire, leg insertion stator winding slot insulation end shield；The enameled wire winding
In on insulation end shield, the coiling group of each magnetic pole of stator is formed；
The rotor assembly includes rotor sheet, magnet steel, shaft；The both ends of the shaft are respectively by being installed on the bearing chamber of drive end bearing bracket
Bearing and rear end cap bearing chamber bearing support；
The drive end bearing bracket is equipped with the first mounting platform of outwardly convex, is equipped on the inside of first mounting platform for accommodating spring
The spring washer accommodating chamber of washer, the spring washer accommodating chamber are communicated with the bearing chamber for being located at drive end bearing bracket, and the output end of the shaft is successively
It is placed through the bearing of the bearing chamber of drive end bearing bracket, going out on the spring washer and the first mounting platform of spring washer accommodating chamber
It is stretched out after axis hole.
2. stepper motor according to claim 1, it is characterised in that: the insulation end shield include preceding insulation end shield, it is rear absolutely
Acies cover；Insulation end shield, rear insulation end shield include matching with the winding slot medial surface of stator and being tightly attached to coiling before described
The leg of slot medial surface, and positioned at the block portion of stator one end, both the leg and block portion are integrally formed；The block
Portion includes the second mounting platform, extends along the second mounting platform edge to the direction perpendicular to the second mounting platform and is formed
Collar stop, and on the inside of the collar stop and internal stop that its fixing end connects with the second mounting platform；Described second
Mounting platform offsets with stator faces, and collar stop, internal stop are located at the outside of stator；The fixing end of the leg and the second peace
Assembling platform connects, and the opening to match with foot cross sectional shape is offered on the second mounting platform；It is described before insulation end shield, after
The respective leg quantity of end shield that insulate and the quantity of internal stop are identical as the quantity of magnetic pole of the stator；The collar stop, second
The slot that the slot and foot's medial surface that mounting platform, internal stop are formed are formed is the winding space of enameled wire.
3. stepper motor according to claim 2, it is characterised in that: the section of the collar stop is regular polygon, institute
Each edge of collar stop is stated equipped with the wire column for guiding enameled wire.
4. stepper motor according to claim 2, it is characterised in that: the drive end bearing bracket is equipped with for the end shield that insulate before accommodating
Block portion block portion accommodating chamber, the rear end cap is equipped with the block portion receiving for the block portion for the end shield that insulate after accommodating
Room.
5. stepper motor according to claim 4, it is characterised in that: the free end of the collar stop and internal stop from
In the same plane by holding, the plane is parallel with the second mounting platform.
6. stepper motor according to claim 1, it is characterised in that: the rotor assembly further include be sheathed in shaft and
Bushing between bearing and rotor sheet.
7. stepper motor according to claim 1, it is characterised in that: the extension end of the shaft is equipped with flat position.
8. stepper motor according to claim 1, it is characterised in that: the drive end bearing bracket is additionally provided with two opposite mounting ears,
Screw hole is offered on the mounting ear.
9. stepper motor according to any one of claims 1 to 8, it is characterised in that: the magnet steel is 0.8mm thickness
N42 high energy product magnet steel；The specification of the stepper motor is 20 × 20 × 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910074779.4A CN109617268B (en) | 2019-01-25 | 2019-01-25 | Stepping motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910074779.4A CN109617268B (en) | 2019-01-25 | 2019-01-25 | Stepping motor |
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|---|---|
| CN109617268A true CN109617268A (en) | 2019-04-12 |
| CN109617268B CN109617268B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910074779.4A Active CN109617268B (en) | 2019-01-25 | 2019-01-25 | Stepping motor |
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