CN208738998U - A kind of stepper motor improving stepping angular accuracy - Google Patents
A kind of stepper motor improving stepping angular accuracy Download PDFInfo
- Publication number
- CN208738998U CN208738998U CN201821591929.6U CN201821591929U CN208738998U CN 208738998 U CN208738998 U CN 208738998U CN 201821591929 U CN201821591929 U CN 201821591929U CN 208738998 U CN208738998 U CN 208738998U
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- CN
- China
- Prior art keywords
- coil holder
- magnetic
- magnetic yoke
- stepper motor
- baseplate part
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Abstract
The utility model relates to stepper motor technical fields, in particular disclose a kind of stepper motor for improving stepping angular accuracy, axis body, the magnetic substance being set on the outside of axis body including rotation setting and the stator being arranged for surrounding magnetic substance, stator includes coil holder, the first magnetic yoke, the second magnetic yoke and coil, coil holder is equipped with through-hole, is connected to multiple first card slots and multiple second card slots with through-hole, first magnetic yoke is equipped with multiple first claws being located in multiple first card slots respectively, and the second magnetic yoke is equipped with multiple second claws being located in multiple second card slots respectively；Coil holder, the first magnetic yoke, the second magnetic yoke is separately separately formed, it then fits together, avoids processing difficulties and cost caused by unitary design excessively high；Make the less processed limitation of the design of magnetic yoke simultaneously, maximum plays the performance of motor；It is accurately positioned in magnetic yoke on coil holder using the cooperation of card slot and claw when assembling, to ensure that stepping angular accuracy.
Description
Technical field
The utility model relates to stepper motor technical fields, in particular disclose a kind of stepping electricity for improving stepping angular accuracy
Machine.
Background technique
Stepper motor is common dynamic origin, and in the construction of stepper motor, stator is essential basic structure
One of part, stator are made of multiple parts, in the manufacturing process of stator, are mainly first processed magnetic yoke in the prior art, are allowed
The magnetic yoke after processing is put into injection mold afterwards, recycles injection molding process by plastic cement integrated injection molding in magnetic yoke.It is such
Manufacturing method for stators complex process is cumbersome, leads to the processing difficulties of stator and processing cost is excessively high, and is injecting into mold
When plastics after thawing, the plastics after thawing usually by magnetic yoke blastic deformation, can cause the stepping angular accuracy of stepper motor significantly
It reduces.
Summary of the invention
In order to overcome shortcoming and defect existing in the prior art, the purpose of this utility model is to provide a kind of raising steps
It is into the stepper motor of angular accuracy, coil holder, the first magnetic yoke, the second magnetic yoke is separately separately formed, it then fits together, avoids one
Processing difficulties caused by body formula designs and cost are excessively high；Make the less processed limitation of the design of magnetic yoke simultaneously, maximum plays electricity
The performance of machine；It is accurately positioned in magnetic yoke on coil holder using the cooperation of card slot and claw when assembling, to ensure that stepping angle essence
Degree.
To achieve the above object, the stepper motor of a kind of raising stepping angular accuracy of the utility model, including rotation setting
Axis body, the magnetic substance that is set on the outside of axis body and for the stator around magnetic substance setting, stator includes coil holder, the first magnetic
Yoke, the second magnetic yoke and coil, the first magnetic yoke, the second magnetic yoke are installed in coil holder from the both ends of coil holder respectively, and coil is sheathed on line
The outside of frame, coil holder are equipped with through-hole, are connected to multiple first card slots and multiple second card slots with through-hole, and through-hole runs through coil holder, magnetic
For being installed in through-hole, the first card slot, the second card slot are formed from the both ends of coil holder are recessed body respectively, the first card slot, the second card
For slot each parallel to the central axis of through-hole, multiple first card slots, multiple second card slots surround the central axis of through-hole in a ring
Array, the first magnetic yoke are equipped with multiple first claws being located in multiple first card slots respectively, and the second magnetic yoke is equipped with and is installed with respectively
In multiple second claws in multiple second card slots.
Wherein, along the direction of the central axis around the through-hole, the first card slot is staggered with the second card slot.
Wherein, first magnetic yoke further includes baseplate part, and multiple first claws are connect with baseplate part respectively, all first cards
Pawl is located at the same side of baseplate part, and baseplate part is used to contradict the end face of coil holder close to the side of the first claw, and baseplate part is equipped with and passes through
The perforation of baseplate part is worn, is perforated for being installed with magnetic substance or/and axis body.
Wherein, multiple first claws are less than multiple first claws far from substrate close to the distance between baseplate part one end
The distance between portion one end.
Wherein, one end from first claw close to one end of baseplate part to the first claw far from baseplate part, the first card
The cross section outer diameter of pawl gradually becomes smaller.
Wherein, the quantity of the stator is two, and two stators surround magnetic substance setting, and coil holder, which is provided with, to be spaced each other
Two supporting legs, supporting leg is located at the coil holder side close to each other of two stators, a supporting leg projection of the coil holder of a stator
Enter between two supporting legs of the coil holder of another stator.
Wherein, the supporting leg is provided with conductive terminal, two the end of a thread of coil respectively with leading on two supporting legs of coil holder
Electric terminal electrically conducts.
Wherein, the stator further includes magnetic conductive cylinder, and magnetic conductive cylinder is sheathed on the outside of the coil holder of two stators, and magnetic conductive cylinder is used for
By coil limit on coil holder, magnetic conductive cylinder is equipped with gap slot, and supporting leg stretches out magnetic conductive cylinder via gap slot.
The utility model has the advantages that coil holder, the first magnetic yoke, the second magnetic yoke is separately separately formed, it then fits together, avoids existing
Integrated injection forming design caused processing difficulties and cost are excessively high in technology；Make the design of magnetic yoke is less to be processed simultaneously
Limitation, maximum play motor performance；Magnetic yoke is accurately positioned on coil holder using the cooperation of card slot and claw when assembling, from
And it ensure that stepping angular accuracy.
Detailed description of the invention
Fig. 1 is the decomposition texture schematic diagram that the utility model hides axis body, coil and magnetic substance；
Fig. 2 is the hiding axis body, coil, magnetic conductive cylinder and the signal of the decomposition texture at another visual angle of magnetic substance of the utility model
Figure；
Fig. 3 is the schematic perspective view of the hiding axis body of the utility model, coil, magnetic conductive cylinder and magnetic substance.
Appended drawing reference includes:
1-the 3-the first magnetic yoke of 2-coil holder of stator
4-the second the 6-the first card slot of 5-through-hole of magnetic yoke
7-the second card slot the 9-the second claw of the 8-the first claw
11-baseplate part 12-supporting leg, 13-conductive terminals
14-magnetic conductive cylinders.
Specific embodiment
For the ease of the understanding of those skilled in the art, the utility model is made below with reference to examples and drawings further
Explanation, the content that embodiment refers to not is restriction to the utility model.
Shown in please referring to Fig.1 to Fig.3, a kind of stepper motor of raising stepping angular accuracy of the utility model, including rotation
The axis body (not shown) of setting, the magnetic substance (not shown) being set on the outside of axis body and for around magnetic substance be arranged
Stator 1, stator 1 include coil holder 2, the first magnetic yoke 3, the second magnetic yoke 4 and coil (not shown), the first magnetic yoke 3, the second magnetic
Yoke 4 is installed in coil holder 2 from the left and right ends of coil holder 2 respectively, and coil is set on the lateral surface of coil holder 2, and coil holder 2 is equipped with logical
Hole 5 is connected to multiple first card slots 6 and multiple second card slots 7 with through-hole 5, and through-hole 5 runs through coil holder 2 along the axial direction of coil holder 2,
Magnetic substance is for being installed in through-hole 5, and the first card slot 6, the second card slot 7 are formed from the both ends of coil holder 2 are recessed respectively, the first card slot
6, the second card slot 7 run through through-hole 5 side wall, the first card slot 6, the second card slot 7 each parallel to through-hole 5 central axis, it is multiple
First card slot 6, multiple second card slots 7 surround the central axis circular array of through-hole 5, and the first magnetic yoke 3 is equipped with and is installed with respectively
Multiple first claws 8 in multiple first card slots 6, the first card slot 6 and the first claw 8 correspond, and the second magnetic yoke 4, which is equipped with, divides
It is not installed with multiple second claws 9 in multiple second card slots 7, the second card slot 7, the second claw 9 correspond.
Coil holder 2, the first magnetic yoke 3, the second magnetic yoke 4 is separately separately formed, then the first magnetic yoke 3, the second magnetic yoke 4 are divided again
It is not assembled on coil holder 2, avoids integrated injection forming design is caused in the prior art processing difficulties and cost excessively high；Together
When make the less processed limitation of the design of magnetic yoke, maximum plays the performance of motor；The cooperation of card slot and claw is utilized when assembling
It is accurately positioned in magnetic yoke on coil holder 2, to ensure that stepping angular accuracy.
Along the direction of the central axis around the through-hole 5, the first card slot 6 is staggered with the second card slot 7, i.e., any phase
There is second card slot 7 between two adjacent the first card slots 6, there is one the between two the second card slots 7 of arbitrary neighborhood
One card slot 6 so that the first claw 8 is staggered with the second claw 9 so that the magnetic line of force for the electromagnetic field that coil generates via
9 uniform transmission of the second claw of first claw 8 of the first magnetic yoke 3, the second magnetic yoke 4 promotes the equal of the magnetic line of force around magnetic substance
Even distributivity, stepping angular accuracy when further service hoisting stepper motor rotates.
First magnetic yoke 3 further includes baseplate part 11, the generally circular plate of baseplate part 11, multiple difference of first claws 8
It is connect with baseplate part 11, all first claws 8 are located at the same side of baseplate part 11, and baseplate part 11 is close to the side of the first claw 8
For contradicting in the end face of coil holder 2, prevents the first magnetic yoke 3 to be excessively encased in coil holder 2, promote the dress of the first magnetic yoke 3 and coil holder 2
With precision；Baseplate part 11 is equipped with the perforation (unlabeled in figure) through baseplate part 11, perforates for being installed with magnetic substance or/and axis
Body.The construction of second magnetic yoke 4 is identical as the construction of the first magnetic yoke 3, and details are not described herein.
Multiple first claws 8 are less than multiple first claws 8 far from substrate close to the distance between 11 one end of baseplate part
The distance between 11 one end of portion, when the first magnetic yoke 3 to be fitted into coil holder 2, first by multiple first claws 8 far from baseplate part 11
Close direction is drawn close towards each other for one end, then multiple first claws 8 is respectively charged into multiple first card slots 6, the first claw 8
After being packed into the first card slot 6, multiple first claws 8 direction separate towards each other under the effect of natural resiliency power is mobile until supporting
Touching on the bottom wall of the first card slot 6, using the elastic-restoring force of the first claw 8 by 3 strong fix of the first magnetic yoke on coil holder 2,
Prevent the first magnetic yoke 3 and coil holder 2 disconnected from each other.First magnetic yoke 3 is identical as the construction of the second magnetic yoke 4, and details are not described herein.
From first claw 8 close to one end of baseplate part 11 to first one end of claw 8 far from baseplate part 11, the first card
The cross section outer diameter of pawl 8 gradually becomes smaller, when the first claw 8 is packed into the first card slot 6, it is ensured that the first claw 8 can be inserted smoothly
Enter in the first card slot 6, promotes the packaging efficiency of the first magnetic yoke 3 and coil holder 2.
The quantity of the stator 1 is two, and two stators 1 are arranged around magnetic substance, and coil holder 2, which is provided with, to be spaced each other
Two supporting legs 12, supporting leg 12 are located at the side close to each other of coil holder 2 of two stators 1, a branch of the coil holder 2 of a stator 1
Leg 12 protrudes between two supporting legs 12 of the coil holder 2 of another stator 1.Between supporting leg 12 using the undercarriage of two stators 1
Frictional force, by two stators 1 assemble together molding one entirety；Preferably, two of the coil holder 2 of a stator 1
The side close to each other of supporting leg 12 is provided with rib slot (not shown), a supporting leg 12 of the coil holder 2 of another stator 1
Two sides are provided with rib (not shown), and rib is for protruding into rib slot, after two stators 1 fit together,
The side wall block rib of rib slot, prevents rib from exiting out of rib slot, and then ensures that two stators 1 are firmly assembled together, and prevents
Only two stators 1 are disconnected from each other.
It in the present embodiment, is additionally provided between two stators 1 magnetic partiting ring (unlabeled in figure), magnetic partiting ring is located at a stator
The first magnetic yoke 3 and another stator the second magnetic yoke 4 between, magnetic partiting ring is used to that the magnetic lines of force of two stators 1 to be isolated, and prevents two
The magnetic line of force of a stator 1 is interfering with each other.
The supporting leg 12 is provided with conductive terminal 13, and two the end of a thread of coil are respectively and on two supporting legs 12 of coil holder 2
Conductive terminal 13 electrically conducts, and conductive terminal 13 is used to that extraneous power supply to be connected.
The stator 1 further includes magnetic conductive cylinder 14, and magnetic conductive cylinder 14 is set in the outside of the coil holder 2 of two stators 1, magnetic conductive cylinder 14
For coil limit to be provided with gap slot (unlabeled in figure) on coil holder 2, magnetic conductive cylinder 14, in the present embodiment, magnetic conductive cylinder
14 cross-sectional shape substantially c-type, supporting leg 12 stretch out magnetic conductive cylinder 14 via gap slot.
The above content is only the preferred embodiment of the utility model, and the content of the present specification should not be construed as to the utility model
Limitation.
Claims (8)
1. a kind of stepper motor for improving stepping angular accuracy, it is characterised in that: including rotating the axis body of setting, being set in outside axis body
The magnetic substance of side and for the stator around magnetic substance setting, stator includes coil holder, the first magnetic yoke, the second magnetic yoke and coil, the
One magnetic yoke, the second magnetic yoke are installed in coil holder from the both ends of coil holder respectively, and coil is sheathed on the outside of coil holder, and coil holder is equipped with logical
Hole is connected to multiple first card slots and multiple second card slots with through-hole, and through-hole runs through coil holder, and magnetic substance is used to be installed in through-hole,
First card slot, the second card slot are formed from the both ends of coil holder are recessed respectively, the first card slot, the second card slot each parallel to through-hole center
Axis, multiple first card slots, multiple second card slots surround the central axis circular array of through-hole, and the first magnetic yoke is equipped with difference
Multiple first claws being located in multiple first card slots, the second magnetic yoke are multiple in multiple second card slots equipped with being located in respectively
Second claw.
2. the stepper motor according to claim 1 for improving stepping angular accuracy, it is characterised in that: along around the through-hole
The direction of central axis, the first card slot are staggered with the second card slot.
3. the stepper motor according to claim 1 for improving stepping angular accuracy, it is characterised in that: first magnetic yoke is also wrapped
Baseplate part is included, multiple first claws are connect with baseplate part respectively, and all first claws are located at the same side of baseplate part, and baseplate part leans on
The side of nearly first claw is used to contradict the end face of coil holder, and baseplate part is equipped with the perforation through baseplate part, perforates for being installed with magnetic
Property body or/and axis body.
4. the stepper motor according to claim 3 for improving stepping angular accuracy, it is characterised in that: multiple first claws
It is less than multiple first claws far from the distance between baseplate part one end close to the distance between baseplate part one end.
5. the stepper motor according to claim 3 for improving stepping angular accuracy, it is characterised in that: leaned on from first claw
The one end of one end of nearly baseplate part to the first claw far from baseplate part, the cross section external world of the first claw gradually becomes smaller.
6. the stepper motor according to claim 1 for improving stepping angular accuracy, it is characterised in that: the quantity of the stator is
Two, two stators surround magnetic substance setting, and coil holder is provided with two supporting legs being spaced each other, and supporting leg is located at two stators
Coil holder side close to each other, a supporting leg of the coil holder of a stator protrude into the coil holder of another stator two supporting legs it
Between.
7. the stepper motor according to claim 6 for improving stepping angular accuracy, it is characterised in that: the supporting leg, which is provided with, leads
Electric terminal, two the end of a thread of coil electrically conduct with the conductive terminal on two supporting legs of coil holder respectively.
8. the stepper motor according to claim 6 for improving stepping angular accuracy, it is characterised in that: the stator further includes leading
Magnetic cylinder, magnetic conductive cylinder are sheathed on the outside of the coil holder of two stators, and magnetic conductive cylinder is used to limit coil in coil holder, and magnetic conductive cylinder is equipped with
Gap slot, supporting leg stretch out magnetic conductive cylinder via gap slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821591929.6U CN208738998U (en) | 2018-09-28 | 2018-09-28 | A kind of stepper motor improving stepping angular accuracy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821591929.6U CN208738998U (en) | 2018-09-28 | 2018-09-28 | A kind of stepper motor improving stepping angular accuracy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208738998U true CN208738998U (en) | 2019-04-12 |
Family
ID=66035579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821591929.6U Expired - Fee Related CN208738998U (en) | 2018-09-28 | 2018-09-28 | A kind of stepper motor improving stepping angular accuracy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208738998U (en) |
-
2018
- 2018-09-28 CN CN201821591929.6U patent/CN208738998U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190412 Termination date: 20200928 |