CN211266727U - Self-resetting limited angle torque motor - Google Patents
Self-resetting limited angle torque motor Download PDFInfo
- Publication number
- CN211266727U CN211266727U CN201922185091.1U CN201922185091U CN211266727U CN 211266727 U CN211266727 U CN 211266727U CN 201922185091 U CN201922185091 U CN 201922185091U CN 211266727 U CN211266727 U CN 211266727U
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- Prior art keywords
- reset
- rotor
- stator
- motor
- magnetic steel
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 53
- 239000010959 steel Substances 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model belongs to the field of motors, in particular to a self-reset limited angle torque motor, which solves the problem that the limited angle brushless DC torque motor can not be reset normally due to damage failure of a volute spiral spring, and comprises a reset stator and a reset rotor; the reset stator comprises a reset machine base, at least two reset magnetic steel bases and at least two reset stator magnetic steels; the reset machine seat is provided with at least two U-shaped grooves on the end surface of an annular seat body; the reset magnetic steel seat is fixed on the reset base, and a reset stator magnetic steel is fixed on each seat body; the reset rotor comprises a reset rotor bracket and at least one pair of reset rotor magnetic steels; the reset rotor magnetic steel is oppositely arranged on the outer wall of the reset rotor bracket; and is opposite to the reset stator magnetic steel. Through permanent magnet structure resetting, realize limited corner torque motor's quick reset, the structure is simpler, does not have the risk of volute spiral spring fracture inefficacy, can adapt to complicated environmental condition, and the reliability obviously improves.
Description
Technical Field
The utility model belongs to the motor field, concretely relates to from limited corner torque motor that restores to throne.
Background
The limited corner torque motor is a servo motor which can directly drive a load to make quick movement and accurate positioning within a certain angle range. Compared with the common brush direct current motor with the electric brush and the commutator, the structure is simpler, the reliability is high, and the phenomenon that the electric brush violently jumps due to frequent reciprocating swing does not exist. The servo drive mechanism is particularly suitable for servo drive occasions which only do reciprocating swing, and has small volume, high precision, long service life and high reliability.
The limited angle torque motor mostly adopts a scroll spring for mechanical reset. The structure of the motor is shown in figure 1, and the motor mainly comprises a motor shaft 1, an end cover 2, a bearing 3, a machine shell 4, a motor rotor 5, a motor stator 6, a motor controller 7, a volute spiral spring 8 and a spring seat 9. Under complicated environmental conditions, a decarburized layer may appear on the surface of the spiral spring, which causes the surface hardness and strength of the spiral spring to be sharply reduced and is difficult to withstand the periodic impact load. Meanwhile, the decarburized layer induces internal cracks, so that the internal stress of the volute spiral spring is overlarge under the working condition, the volute spiral spring is broken and fails early, and the limited-angle torque motor cannot be reset normally.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a from limited corner torque motor that restores to throne, solve because of the scroll spring damage inefficacy lead to the problem that the unable normal reset of limited corner brushless DC torque motor.
The technical scheme of the utility model is to provide a self-resetting limited angle torque motor, which comprises a shell, an end cover, a motor shaft, a motor stator and a motor rotor;
the end covers are buckled at two ends of the shell to form a sealed shell; the motor shaft penetrates out along the axial center of the sealing shell;
the motor stator and the motor rotor are both positioned in the sealed shell, the motor stator is arranged on the shell, and the motor rotor is fixed on a motor shaft;
it is characterized in that:
the device also comprises a reset stator and a reset rotor;
the reset stator and the reset rotor are both positioned outside the sealed shell;
the reset stator comprises a reset base, at least two reset magnetic steel bases and at least two reset stator magnetic steels; the reset machine base is an annular base body fixed on the end cover, and the end surface of the reset machine base is parallel to the plane of the end cover; at least two U-shaped grooves are formed along the end face of the annular seat body; the reset magnetic steel seat comprises a seat body and fixed arms which are integrally arranged with the seat body, the fixed arms are inserted into the U-shaped grooves, and the seat body is respectively fixed with a reset stator magnetic steel;
the reset rotor comprises a reset rotor bracket and at least one pair of reset rotor magnetic steels; the reset rotor bracket is annular and is sleeved and fixed on the output end of the motor shaft; the reset rotor magnetic steel is oppositely arranged on the outer wall of the reset rotor bracket; and is opposite to the reset stator magnetic steel; a gap is arranged between the reset stator magnetic steel and the reset rotor magnetic steel, and the polarities of the reset stator magnetic steel and the reset rotor magnetic steel are opposite.
Furthermore, in order to adjust the rotation angle range of the motor, the length of the U-shaped groove is larger than the width of the fixing arm; so that the position of the fixing arm in the U-shaped groove can be adjusted.
Further, the two U-shaped grooves are symmetrical about the center of the reset machine base.
Furthermore, the reset machine base and the reset rotor bracket are coaxial with the motor shaft.
Further, the reset rotor bracket is mounted on the output end of the motor shaft through a key groove structure.
Furthermore, the reset rotor magnetic steel is fixed on the outer wall of the reset rotor bracket through bonding.
The utility model has the advantages that:
1. the utility model discloses compare in the limited corner torque motor that traditional mechanical spring resets, reset through the permanent magnet structure, realize limited corner torque motor's quick reset, the structure is simpler, does not have the risk that volute spiral spring fracture became invalid, can adapt to complicated environmental condition, and the reliability obviously improves.
2. The utility model discloses can also adjust the position that resets the stator magnet steel through the U type groove on the frame that resets, and then adjust the moment that resets of permanent magnet structure, the operation is comparatively convenient. Meanwhile, the rotation angle range of the motor can be adjusted by adjusting the position of the reset stator magnetic steel, and the performance requirements of motors with different rotation angle ranges can be met.
Drawings
FIG. 1 is a schematic structural view of a conventional limited angle torque motor mechanically restored by a spiral spring;
the reference numerals in fig. 1 are: 1-motor shaft, 2-end cover, 3-bearing, 4-machine shell, 5-motor rotor, 6-motor stator, 7-motor controller, 8-volute spring and 9-spring seat;
FIG. 2 is a schematic view of a wrap spring;
fig. 3 is a schematic structural view of a limited-angle torque motor adopting a permanent magnet reset structure according to an embodiment of the present invention;
the reference numerals in fig. 3 are: 1-motor shaft, 2-end cover, 3-bearing, 4-machine shell, 5-motor rotor, 6-motor stator, 7-motor controller, 08-reset rotor and 09-reset stator;
fig. 4a is a schematic front view of a permanent magnet reset configuration;
fig. 4b is a cross-sectional view of a permanent magnet reset structure:
the reference numerals in fig. 4a and 4b are: 10-a reset machine base, 11-a reset magnetic steel base, 12-reset stator magnetic steel, 13-a reset rotor bracket, 14-reset rotor magnetic steel and 15-a fastening nut;
fig. 5a is a schematic position diagram of the permanent magnet resetting structure when the motor is in a driving working state;
fig. 5b is a schematic position diagram of the permanent magnet reset structure when the motor is in a reset working state.
Detailed Description
The invention is further described with reference to the following drawings and specific embodiments.
As can be seen from fig. 3, the limited angle torque motor of the present embodiment is composed of a motor shaft 1, an end cover 2, a bearing 3, a housing 4, a motor rotor 5, a motor stator 6, a motor controller 7, a reset rotor 8, and a reset stator 9. The end covers 2 are buckled at two ends of the machine shell 4 to form a closed shell. Two end covers 2 are provided with bearing holes in the center of the side wall in the closed shell, and the bearing 3 is fixed in the bearing holes. The motor shaft 1 passes through the center of the closed shell, and the two ends of the motor shaft located inside the closed shell are respectively supported by bearings 3. The motor rotor 5 and the motor stator 6 are both positioned inside the closed shell, wherein the motor stator 6 is fixed on the machine shell 4, and the electronic rotor 5 is installed on the motor shaft and is fixed through a locking nut.
Meanwhile, as can be seen from fig. 3, the permanent magnet reset structures formed by the reset rotor 08 and the reset stator 09 are both located outside the sealed housing and are both located at the output end of the motor shaft 1.
Referring to fig. 4a and 4b, the reset stator 09 of the present embodiment is composed of a reset machine base 10, a reset magnetic steel base 11, and a reset stator magnetic steel 12. The reset machine base 10 is an annular base body, and two U-shaped grooves are formed in the end face of the annular base body and are centrosymmetric with respect to the annular base body. The reset magnetic steel seat 11 is installed on the reset machine base and specifically comprises a seat body and a fixed arm, and the fixed arm is inserted into the U-shaped groove to fix the reset magnetic steel seat 11. The reset stator magnetic steel 12 is bonded on the reset magnetic steel seat, and the reset magnetic steel seat 11 can be adjusted in position through a U-shaped groove on the reset machine seat. In other embodiments, a plurality of pairs of reset stator magnetic steels may be arranged according to the rotation angle range, that is, a plurality of pairs of U-shaped grooves may be formed in the reset machine base 10, and one reset stator magnetic steel is fixed in each U-shaped groove through the reset magnetic steel base 11.
The reset rotor 08 is composed of a reset rotor bracket 13 and a reset rotor magnetic steel 14. The rotor support that resets is cyclic annular, through keyway structural mounting on the motor shaft, and the rotor magnet steel that resets bonds on the rotor support that resets to relative with stator magnet steel 12 that resets, the polarity of stator magnet steel that resets and the rotor magnet steel that resets is opposite, and the stator magnet steel that resets has the clearance with the rotor magnet steel that resets between the two, and the clearance ensures that the rotor that resets can rotate at the certain limit, with the required electromagnetism counter-force that resets of constitution.
The motor of the embodiment can work in two working states, namely a driving working state and a resetting working state.
In a driving working state, the motor stator is electrified, and the motor rotor drives the motor shaft to rotate. As shown in fig. 5a, the reset stator and the reset rotor increase the reset torque as the angle changes.
And in the reset working state, the motor stator is powered off. As shown in fig. 5b, the reset torque drives the reset rotor to rotate, so as to drive the motor shaft to rotate, thereby realizing reset.
Claims (6)
1. A self-resetting limited angle torque motor comprises a shell (4), an end cover (2), a motor shaft (1), a motor stator (6) and a motor rotor (5);
the end covers (2) are buckled at two ends of the shell (4) to form a sealed shell; the motor shaft (1) penetrates out along the axial center of the sealing shell;
the motor stator (6) and the motor rotor (5) are both positioned in the sealed shell, the motor stator (6) is installed on the machine shell (4), and the motor rotor (5) is fixed on the motor shaft (1);
the method is characterized in that:
the device also comprises a reset stator (09) and a reset rotor (08);
the reset stator (09) and the reset rotor (08) are both positioned outside the sealed shell;
the reset stator (09) comprises a reset machine base (10), at least two reset magnetic steel bases (11) and at least two reset stator magnetic steels (12); the reset machine base (10) is an annular base body fixed on the end cover, and the end surface of the annular base body is parallel to the plane of the end cover (2); at least two U-shaped grooves are formed along the end face of the annular seat body; the reset magnetic steel seat (11) comprises a seat body and fixed arms which are integrally arranged with the seat body, the fixed arms are inserted into the U-shaped grooves, and reset stator magnetic steel (12) is fixed on the seat body;
the reset rotor (08) comprises a reset rotor bracket (13) and at least one pair of reset rotor magnetic steels (14); the reset rotor bracket (13) is annular and is sleeved and fixed on the output end of the motor shaft; the reset rotor magnetic steel (14) is oppositely arranged on the outer wall of the reset rotor bracket (13); and is opposite to the reset stator magnetic steel (12); a gap is arranged between the reset stator magnetic steel (12) and the reset rotor magnetic steel (14), and the polarities of the reset stator magnetic steel and the reset rotor magnetic steel are opposite.
2. The self-resetting limited angle torque motor of claim 1, wherein: the length of the U-shaped groove is greater than the width of the fixing arm; so that the position of the fixing arm in the U-shaped groove can be adjusted.
3. The self-resetting limited angle torque motor of claim 2, wherein: the two U-shaped grooves are symmetrical about the center of the reset machine base (10).
4. The self-resetting limited angle torque motor of claim 3, wherein: the reset machine base (10) and the reset rotor bracket (13) are coaxial with the motor shaft.
5. The self-resetting limited angle torque motor of claim 4, wherein: the reset rotor bracket (13) is arranged at the output end of the motor shaft through a key groove structure.
6. The self-resetting limited angle torque motor of claim 5, wherein: the reset rotor magnetic steel (14) is fixed on the outer wall of the reset rotor bracket (13) through bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922185091.1U CN211266727U (en) | 2019-12-09 | 2019-12-09 | Self-resetting limited angle torque motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922185091.1U CN211266727U (en) | 2019-12-09 | 2019-12-09 | Self-resetting limited angle torque motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211266727U true CN211266727U (en) | 2020-08-14 |
Family
ID=71960262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922185091.1U Withdrawn - After Issue CN211266727U (en) | 2019-12-09 | 2019-12-09 | Self-resetting limited angle torque motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211266727U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110855115A (en) * | 2019-12-09 | 2020-02-28 | 西安航天精密机电研究所 | Self-resetting limited angle torque motor |
-
2019
- 2019-12-09 CN CN201922185091.1U patent/CN211266727U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110855115A (en) * | 2019-12-09 | 2020-02-28 | 西安航天精密机电研究所 | Self-resetting limited angle torque motor |
| CN110855115B (en) * | 2019-12-09 | 2024-07-12 | 西安航天精密机电研究所 | Self-resetting limited corner torque motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200814 Effective date of abandoning: 20240712 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200814 Effective date of abandoning: 20240712 |