CN206481200U - Limited angle torque motor - Google Patents
Limited angle torque motor Download PDFInfo
- Publication number
- CN206481200U CN206481200U CN201720093759.8U CN201720093759U CN206481200U CN 206481200 U CN206481200 U CN 206481200U CN 201720093759 U CN201720093759 U CN 201720093759U CN 206481200 U CN206481200 U CN 206481200U
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- China
- Prior art keywords
- rotor
- end cap
- magnet steel
- casing
- torque motor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of limited angle torque motor, including casing, end cap, rotor and rotation angle detecting apparatus, stator core is set with casing, eight T-shaped teeth are provided with the inside of stator core, eight teeth groove are formed between eight T-shaped teeth, the skew slot angle of teeth groove is a groove, wherein the coil being serially connected is wound with four T-shaped teeth being angularly distributed respectively, and the winding direction of two adjacent coils is opposite；End cap is arranged on the port of casing；Rotor is assemblied between end cap and casing by bearing, and rotor is located at the circumferential magnetic pole that four radial magnetizings are angularly distributed with the inner side of stator core, rotor, the alternating polarity distribution of four magnetic poles；Rotation angle detecting apparatus is arranged between rotor and end cap.The torque volume ratio of this limited angle torque motor is significantly improved, and also smaller in its angle range moment of resistance deviation, inside is provided with rotation angle detecting apparatus so that motor is overall without additionally increasing the equipment for detecting rotor angle location again.
Description
Technical field
The utility model belongs to a kind of motor, is applied more particularly, to one kind in high-precision directly-drive servo valve or similar servo
Limited angle torque motor in control system.
Background technology
Limited angle torque motor is that one kind can be rotated in certain angle range, and the special electricity for having certain torque to export
Machine, such motor can directly as servo-control system driving element, with simple in construction, reliable, it is easy to control, dynamic ring
Should be good the advantages of.But existing limited angle torque motor all exists mostly that air gap is big, torque volume ratio is small, in angle range
The shortcomings of torque deviation is larger, it is impossible to meet the requirement of high-precision servo drive system.
Utility model content
The purpose of this utility model is to provide a kind of limited angle torque motor, to overcome existing limited angle torque
Motor all has that air gap is big, torque volume ratio is small mostly, the shortcomings of angle range moment of resistance deviation is larger.
To reach above-mentioned purpose, the utility model is achieved using following technical scheme.
A kind of limited angle torque motor, it is characterised in that including：Casing, end cap, rotor and rotation angle detecting apparatus, institute
State and stator core is set with casing, be provided with the inside of the stator core between eight T-shaped teeth, eight T-shaped teeth and form eight
Individual teeth groove, the skew slot angle of the teeth groove is a groove, and the width of the port of the teeth groove is the 4/15-6/15 of the top width of T-shaped tooth, most
It is well 1/3, wherein be wound with coil on four T-shaped teeth being angularly distributed respectively, four coils are serially connected,
And the winding direction of two adjacent coils is opposite；The end cap is arranged on the port of the casing；The rotor
It is assemblied in by bearing between the end cap and the casing, the rotor is located at the inner side of the stator core, the rotor
The magnetic pole of four radial magnetizings, the alternating polarity distribution of four magnetic poles is angularly distributed with upper circumference；The rotation angle detecting apparatus
It is arranged between the rotor and the end cap.
According to limited angle torque motor of the present utility model, stator core is sleeved in casing, and one end of casing passes through
Eight T-shaped teeth are angularly distributed with end cap seal, the inner side of stator core, wherein on four T-shaped teeth being angularly distributed respectively
Be wound with the coil being serially connected, and adjacent two coils winding direction on the contrary, rotor is located at the inner side of stator core,
The axially arranged magnetic pole for having four radial magnetizings of rotor, and the alternating polarity distribution of four magnetic poles, after coil electricity, production
Raw magnetic field and the magnetic field interaction of rotor, driving rotor rotate towards a direction in stator core, change coil
Energization polarity can just change the direction of rotation of rotor, i.e., be that can be achieved to turn by the frequency for controlling to change coil electricity polarity
Son does the reciprocating motion of certain corner in stator core.This limited angle torque motor of the present utility model and existing class
Compared like motor, air gap is small, torque volume ratio is significantly improved, it is also smaller in whole angle range moment of resistance deviation, separately
Pass through the rotation angle detecting apparatus between rotor and end cap outside so that overall without additionally increasing for rotor angle location again
The relevant device of detection, considerably reduces the volume of technical solutions of the utility model.
As preferred, the rotor includes rotating shaft, and the bearing, which is arranged in the two ends of the rotating shaft, the rotating shaft, to be covered
Equipped with yoke, four blocks of magnet steel are fixed with the yoke, the direction magnetized of four blocks of magnet steel is the radial direction of the rotating shaft
Direction, and four blocks of magnet steel, according to the circumferential cross-distribution of the similarities and differences of polarity, the end of the adjacent magnet steel of two of which is close to institute
Rotation angle detecting apparatus is stated, the end of remaining two magnet steel is away from the rotation angle detecting apparatus.
According to limited angle torque motor of the present utility model, rotor is made up of rotating shaft, yoke and four blocks of magnet steel, its transfer
Sub- two ends are separately installed with a bearing, are arranged on by two bearings between end cap and casing, yoke is sleeved in rotating shaft, four
The magnetizing direction of block magnet steel is the radial direction of rotating shaft, and four blocks of magnet steel are according to the circumferential cross-distribution of the similarities and differences of polarity, wherein
The end of two adjacent magnet steel provides sensing magnetic flux, two other magnet steel close to rotation angle detecting apparatus for rotation angle detecting apparatus
End away from rotation angle detecting apparatus, so as not to disturb rotation angle detecting apparatus to work.
As preferred, four magnet steel include two equal lengths and the different long magnet steel of polarity and two length
The different short magnet steel of equal and polarity, and one end of all magnet steel is mutually aligned.
According to limited angle torque motor of the present utility model, two long magnet steel provide sensing magnetic for rotation angle detecting apparatus
It is logical, it is exported corresponding voltage signal, the displacement of rotor is so assured that by calculating；Short magnet steel is away from roll angle inspection
Device, so as not to disturb rotation angle detecting apparatus to work.
As preferred, groove, the width of the opening of the groove are respectively arranged with the middle part of the tooth top of each T-shaped tooth
Spend the 4/15-6/15 of the top width for the T-shaped tooth, preferably 1/3.
As preferred, the cross section of the groove is semicircle.
As preferred, the rotation angle detecting apparatus is linear hall sensor.
As preferred, end ring is provided between the end cap and the casing, the end ring is fixed with the casing to be connected
Connect, the end cap is fixedly connected with the end ring, annular Hall frame, the linear Hall are fixedly connected with the inside of the end ring
Sensor is fixed on the annular Hall frame.
According to limited angle torque motor of the present utility model, end ring is fixed in casing, end cap and annular Hall frame point
It is not connected to from both sides on end ring, linear hall sensor is fixed on annular Hall frame, this structure causes end cap and linear
Hall sensor obtains relatively stable installation.
As preferred, one end of the rotating shaft, which is provided with pin-and-hole, the pin-and-hole, is provided with spacer pin, the spacer pin
Two ends extend radially out and be symmetrically arranged with two fan-shaped stopper slots, the limit on the inside of the surface of the rotating shaft, the end cap
The two ends of position pin are respectively protruding into the stopper slot.
According to limited angle torque motor of the present utility model, one end of rotating shaft is provided with spacer pin, and the inner side of end cap is right
Title is provided with two fan-shaped stopper slots, and the two ends of spacer pin are respectively clamped into corresponding stopper slot, rotor can be made necessarily to turn
Crankmotion in angular region.
Brief description of the drawings
The utility model is described in further details with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is a kind of full sectional view of embodiment of limited angle torque motor of the present utility model；
Fig. 2 is the structural representation of rotor and stator core in Fig. 1；
Fig. 3 is the structural representation of the rotor in Fig. 1；
Fig. 4 is the structural representation of end ring, annular Hall frame and rotation angle detecting apparatus in Fig. 1.
In Fig. 1 into Fig. 4：Rotating shaft 1；Casing 2；Stator core 3；Coil 4；Rotation angle detecting apparatus 5；Annular Hall frame 6；End
Ring 7；End cap 8；Back-up ring 9；Bearing 10；Spacer pin 11；Long magnet steel 12；Short magnet steel 13；Yoke 14；Screw 15.
Embodiment
As shown in figure 1, embodiment of the present utility model proposes a kind of limited angle torque motor, including casing 2, end cap 8,
Stator core 3 is set with rotor and rotation angle detecting apparatus 5, casing 2, the inner side of stator core 3 is provided with eight T-shaped teeth, eight
Eight teeth groove are formed between individual T-shaped tooth, the skew slot angle of teeth groove is a groove, and the width of the port of teeth groove is the 1/ of the top width of T-shaped tooth
3, wherein being wound with coil 4 respectively on four T-shaped teeth being angularly distributed, four coils 4 are serially connected, and adjacent
The winding direction of two coils 4 is opposite；End cap 8 is arranged on the port of casing 2；Rotor is assemblied in end cap by bearing 10
Between 8 and casing 2, rotor is located at the circumferential magnetic that four radial magnetizings are angularly distributed with the inner side of stator core 3, rotor
Pole, the alternating polarity distribution of four magnetic poles；Rotation angle detecting apparatus 5 is arranged between rotor and end cap 8.
In the embodiment above, stator core 3 is sleeved in casing 2, and one end of casing 2 is sealed by end cap 8, corner inspection
The less linear hall sensor of the preferred volume of device 5 is surveyed, as shown in Fig. 2 eight teeth groove are according to 1-8 serial number, stator
The coil being serially connected, and two adjacent coils are wound with four T-shaped teeth that the inner side of iron core 3 is angularly distributed respectively
4 winding direction is on the contrary, rotor is located at the inner side of stator core 3, the axially arranged magnetic pole for having four radial magnetizings of rotor, and
And the alternating polarity distribution of four magnetic poles, after coil 4 is powered, the magnetic field of generation and the magnetic field interaction of rotor, driving turn
Son rotates towards a direction in stator core 3, changes the energization polarity of coil 4 and can just change the rotation side of rotor
To doing the reciprocal of certain corner in stator core 3 by controlling to change coil 4 processed and lead to the i.e. achievable rotor of electropolar frequency
Rotary motion.This limited angle torque motor of technical solutions of the utility model compared with existing similar motor, air gap is small,
Torque volume ratio is significantly improved, and also smaller in whole angle range moment of resistance deviation, rotation angle detecting apparatus 5 is installed in addition
Between rotor and end cap 8 so that overall without additionally increasing the relevant device for detecting rotor angle location again, greatly subtract
The small volume of technical solutions of the utility model.
As shown in figure 3, according to one embodiment of the present utility model, rotor includes rotating shaft 1, bearing 10 is arranged on rotating shaft 1
Two ends, be set with yoke 14, yoke 14 in rotating shaft 1 and be fixed with four blocks of magnet steel, the direction magnetized of four blocks of magnet steel is to turn
The radial direction of axle 1, and four blocks of magnet steel, according to the circumferential cross-distribution of the similarities and differences of polarity, the end of the adjacent magnet steel of two of which is leaned on
Nearly rotation angle detecting apparatus 5, remaining two short magnet steel are away from rotation angle detecting apparatus 5, so as not to disturb the work of rotation angle detecting apparatus 5
Make.
In the embodiment above, rotor is made up of rotating shaft 1, yoke 14 and four blocks of magnet steel, and rotating shaft 1 is added using non-magnet material
Work is formed, and yoke 14 is processed using the electrical pure iron DT4E that magnetic property is good, coercivity is low, and four magnet steel use high property
The NdFeB material of energy is made.Wherein the two ends of rotating shaft 1 are separately installed with a bearing 10, and end is transferred on by the two bearings 10
Between lid 8 and casing 2, yoke 14 is fixed in rotating shaft 1 with adhesive, and the magnetizing direction of four blocks of magnet steel is the radial direction of rotating shaft 1
Direction, and four blocks of magnet steel, according to the circumferential cross-distribution of the similarities and differences of polarity, the end of the adjacent magnet steel of two of which is examined close to corner
Survey device 5, be rotation angle detecting apparatus 5 provide sensing magnetic flux, the remote rotation angle detecting apparatus 5 in end of two other magnet steel, so as not to
Interference rotation angle detecting apparatus 5 works.
According to one embodiment of the present utility model, four magnet steel include two equal lengths and the different long magnetic of polarity
Steel 12 and two equal lengths and the different short magnet steel 13 of polarity, and one end of all magnet steel is mutually aligned.
In the embodiment above, two long magnet steel 12 is that rotation angle detecting apparatus 5 provides sensing magnetic flux, makes its output corresponding
Voltage signal, is so assured that the displacement of rotor by calculating；The end of two short magnet steel 13 is away from rotation angle detecting apparatus
5, so as not to disturb its work.
As shown in figure 3, according to one embodiment of the present utility model, being respectively arranged with the middle part of the tooth top of each T-shaped tooth
Groove, the width of the opening of groove is the 1/3 of the top width of T-shaped tooth, and the cross section of groove is semicircle.
In the embodiment above, the structure of groove is provided with the top of this T-shaped tooth, is conducive to limited angle torque motor
Ventilation, while also reducing overall volume.
As shown in figure 4, according to one embodiment of the present utility model, end ring 7, end ring are provided between end cap 8 and casing 2
7 are fixedly connected with casing 2, and end cap 8 is fixedly connected with end ring 7, and the inner side of end ring 7 is fixedly connected with annular Hall frame 6, linearly suddenly
You are fixed on annular Hall frame 6 sensor.
In the embodiment above, end ring 7 is fixed in casing 2, and linear hall sensor is first bonded in annular with adhesive
On Hall frame 6, then annular Hall frame 6 is fixed on end ring 7 with screw 15 again, this structure cause end cap 8 and it is linear suddenly
You obtain relatively stable installation by sensor.
According to one embodiment of the present utility model, one end of rotating shaft 1, which is provided with pin-and-hole, pin-and-hole, is provided with spacer pin
11, the two ends of spacer pin 11 extend radially out the surface of rotating shaft 1, and the inner side of end cap 8 is symmetrically arranged with two fan-shaped stopper slots, limit
The two ends of position pin 11 are respectively protruding into stopper slot.
In the embodiment above, one end of rotating shaft 1 is provided with spacer pin 11, and the inner side of end cap 8 is symmetrically arranged with two fans
The stopper slot of shape, the spread of each fan-shaped stopper slot is 60 °, the two ends of spacer pin 11 is respectively clamped into corresponding spacing
In groove, it is ensured that rotor crankmotion in positive and negative 30 ° of angle range.
When the limited angle torque motor is assembled, first each part is sequentially loaded into casing 2, then axially adjustable end ring 7,
After behind the center of rotation angle detecting apparatus 5 and No. 8 teeth groove center alignments of stator core 3, end ring 7 and casing 2 are welded with laser
Seam crossing, completes being relatively fixed between stator core 3；Before end cap 8 is fixed, first it is arranged on back-up ring 9 on end ring 7, then
The circumferential position of end cap 8 is adjusted, rotating shaft 1 is in zero-bit (center of motor angle range), after adjustment is finished, end cap 8
Laser welding is used with the seam crossing of end ring 7.
Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model
New spirit and scope.So, if it is of the present utility model these change and modification belong to the utility model claim and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these changes and modification.
Claims (7)
1. a kind of limited angle torque motor, it is characterised in that including：
It is set with casing (2), the casing (2) on the inside of stator core (3), the stator core (3) and is provided with eight T-shaped
Eight teeth groove are formed between tooth, eight T-shaped teeth, the skew slot angle of the teeth groove is a groove, and the width of the port of the teeth groove is T-shaped
The 4/15-6/15 of the top width of tooth, wherein coil (4) is wound with respectively on four T-shaped teeth being angularly distributed, described in four
Coil (4) is serially connected, and the winding direction of two adjacent coils (4) is opposite；
End cap (8), the end cap (8) is arranged on the port of the casing (2)；
Rotor, the rotor is assemblied between the end cap (8) and the casing (2) by bearing (10), and the rotor is located at
The circumferential magnetic pole that four radial magnetizings are angularly distributed with the inner side of the stator core (3), the rotor, four magnetic poles
Alternating polarity is distributed；
Rotation angle detecting apparatus (5), the rotation angle detecting apparatus (5) is arranged between the rotor and the end cap (8)；
The rotor includes rotating shaft (1), and the bearing (10) is arranged on the two ends of the rotating shaft (1), the rotating shaft (1) and is set with
Have and four blocks of magnet steel are fixed with yoke (14), the yoke (14), the magnetizing direction of four blocks of magnet steel is the rotating shaft (1)
Radial direction, and four blocks of magnet steel are according to the circumferential cross-distribution of the similarities and differences of polarity, the end of the adjacent magnet steel of two of which
Close to the rotation angle detecting apparatus (5), the end of remaining two magnet steel is away from the rotation angle detecting apparatus (5).
2. limited angle torque motor according to claim 1, it is characterised in that four magnet steel include two long
Degree equal and different polarity long magnet steel (12) and two equal lengths and the different short magnet steel (13) of polarity, and all magnet steel
One end is mutually aligned.
3. limited angle torque motor according to claim 1, it is characterised in that in the tooth top of each T-shaped tooth
Portion is respectively arranged with groove, and the width of the opening of the groove is the 4/15-6/15 of the top width of the T-shaped tooth.
4. limited angle torque motor according to claim 3, it is characterised in that the cross section of the groove is semicircle
Shape.
5. limited angle torque motor according to any one of claim 1 to 4, it is characterised in that the roll angle inspection
Device (5) is linear mole of sensor.
6. limited angle torque motor according to claim 5, it is characterised in that the end cap (8) and the casing (2)
Between be provided with end ring (7), the end ring (7) is fixedly connected with the casing (2), and the end cap (8) and the end ring (7) are solid
Annular mole frame (6) is fixedly connected with the inside of fixed connection, the end ring (7), the linear mole of sensor is fixed on described
On annular mole frame (6).
7. limited angle torque motor according to claim 6, it is characterised in that one end of the rotating shaft (1) is provided with
Spacer pin (11) is installed, the two ends of the spacer pin (11) extend radially out the table of the rotating shaft (1) in pin-and-hole, the pin-and-hole
Two fan-shaped stopper slots are symmetrically arranged with the inside of face, the end cap (8), the two ends of the spacer pin (11) are respectively protruding into institute
State in stopper slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720093759.8U CN206481200U (en) | 2017-01-24 | 2017-01-24 | Limited angle torque motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720093759.8U CN206481200U (en) | 2017-01-24 | 2017-01-24 | Limited angle torque motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206481200U true CN206481200U (en) | 2017-09-08 |
Family
ID=59755022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720093759.8U Expired - Fee Related CN206481200U (en) | 2017-01-24 | 2017-01-24 | Limited angle torque motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206481200U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391077A (en) * | 2018-10-30 | 2019-02-26 | 贵州航天林泉电机有限公司 | A kind of double redundancy limited angle torque motor with locking torque |
| CN109728657A (en) * | 2017-10-27 | 2019-05-07 | 北京精密机电控制设备研究所 | A kind of width corner finite angle servo motor |
| CN109842224A (en) * | 2017-11-24 | 2019-06-04 | 中国船舶重工集团公司第七一一研究所 | Torque actuator |
| CN110581614A (en) * | 2019-08-19 | 2019-12-17 | 华中科技大学 | Servo limited angle torque motor |
| CN110798035A (en) * | 2019-11-12 | 2020-02-14 | 中国船舶重工集团公司第七0七研究所 | Pre-load applying structure and applying method of self-assembled limited corner torque motor bearing |
-
2017
- 2017-01-24 CN CN201720093759.8U patent/CN206481200U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109728657A (en) * | 2017-10-27 | 2019-05-07 | 北京精密机电控制设备研究所 | A kind of width corner finite angle servo motor |
| CN109842224A (en) * | 2017-11-24 | 2019-06-04 | 中国船舶重工集团公司第七一一研究所 | Torque actuator |
| CN109391077A (en) * | 2018-10-30 | 2019-02-26 | 贵州航天林泉电机有限公司 | A kind of double redundancy limited angle torque motor with locking torque |
| CN110581614A (en) * | 2019-08-19 | 2019-12-17 | 华中科技大学 | Servo limited angle torque motor |
| CN110798035A (en) * | 2019-11-12 | 2020-02-14 | 中国船舶重工集团公司第七0七研究所 | Pre-load applying structure and applying method of self-assembled limited corner torque motor bearing |
| CN110798035B (en) * | 2019-11-12 | 2020-12-15 | 中国船舶重工集团公司第七0七研究所 | Pre-load applying structure and applying method of self-assembled limited corner torque motor bearing |
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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: 20170908 Termination date: 20220124 |