CN103580370B - Step-by-step linear electric motor - Google Patents
Step-by-step linear electric motor Download PDFInfo
- Publication number
- CN103580370B CN103580370B CN201210249560.1A CN201210249560A CN103580370B CN 103580370 B CN103580370 B CN 103580370B CN 201210249560 A CN201210249560 A CN 201210249560A CN 103580370 B CN103580370 B CN 103580370B
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- CN
- China
- Prior art keywords
- inner nut
- armature spindle
- plastics inner
- annular groove
- electric motor
- Prior art date
- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transmission Devices (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
A kind of step-by-step linear electric motor, including stator, rotor, armature spindle and screw rod, is provided with the plastics inner nut for being connected with screw drive in armature spindle；Armature spindle therein is metal hollow axle, inwall at metal hollow axle is provided with the annular groove for being embedded in plastics inner nut, annular groove wall is provided with for preventing plastics inner nut radial rotating and the concaveconvex structure moved axially, and in plastics inner nut is inlaid in this annular groove and engages with concaveconvex structure.Step-by-step linear electric motor of the present invention has that service life of rotor is higher, anti-rotation stop performance is good, injection nut strength is high, transmission efficiency is higher, generate heat less, injection mo(u)lding degree is good, transmission accuracy relatively advantages of higher.
Description
Technical field
The present invention relates to motor, particularly relate to a kind of step-by-step linear electric motor.
Background technology
Step-by-step linear electric motor is the motor that rotary motion is converted to linear motion by screw rod.The step-by-step linear electric motor of prior art is by making female thread structure inside the armature spindle rotated, and is inserted in screw rod the most again, to realize driving screw rod to seesaw, as shown in Figure 1 when motor rotates.But inside armature spindle, directly do screw thread, the lost of life of rotor can be caused.The way improved is to be embedded in the plastic screw element of a band self-lubricating function at armature spindle.And how plastics and rotor connect, with regard to the problem having become each producer to need to solve.
A kind of way of prior art is to beat multiple through hole, then by these through holes direct injection-molded plastic inner nut in armature spindle, as shown in Figure 2 in armature spindle central peripheral.This way, owing to having beaten multiple through hole at the periphery of axle, causes the insufficient strength of rotor, and the rotor machining precision in later stage is low.
Shown in Fig. 1, Fig. 2,1 is stator, and 2 is rotor, and 3 is screw rod, and 4 is armature spindle, and 5 is left end cap, and 6 is right end cap, and 7 is bearing, and 8 is plastics inner nut.
Summary of the invention
The purpose of the present invention, it is simply that in order to solve the problem that above-mentioned prior art exists, it is provided that a kind of step-by-step linear electric motor.
In order to achieve the above object, present invention employs techniques below scheme: a kind of step-by-step linear electric motor, including stator, rotor, armature spindle and screw rod, in armature spindle, be provided with the plastics inner nut for being connected with screw drive；Armature spindle therein is metal hollow axle, inwall at metal hollow axle is provided with the annular groove for being embedded in plastics inner nut, annular groove wall is provided with for preventing plastics inner nut radial rotating and the concaveconvex structure moved axially, and in described plastics inner nut is inlaid in this annular groove and engages with concaveconvex structure.
Described concaveconvex structure includes at least one disconnected groove of head and the tail and/or at least one unconnected boss of head and the tail.
Described concaveconvex structure is cancellous screw thread arranged in a crossed manner.
Step-by-step linear electric motor of the present invention, owing to using above technical scheme of knowing clearly, has the following advantages that and feature:
1. the service life of rotor is higher.
2. anti-rotation stop performance is good, and injection nut strength is high.
3. transmission efficiency is higher, generates heat less.
4. injection mo(u)lding degree is good, and transmission accuracy is higher.
5. it is beneficial to armature spindle and rotor are produced in batches and huge stocks, can tackle, by being molded different plastics inner nuts, the client that different lead requires, there is versatility.
Accompanying drawing explanation
Fig. 1, Fig. 2 are the structural representation of prior art step-by-step linear electric motor；
Fig. 3, Fig. 4 are the structural representation of the armature spindle of an embodiment in the present invention；
Fig. 5, Fig. 6 are the structural representation of the armature spindle of another embodiment in the present invention；
Fig. 7 is the assembling schematic diagram of step-by-step linear electric motor of the present invention.
Detailed description of the invention
See the step-by-step linear electric motor of Fig. 7, the present invention, including stator 1, rotor 2, screw rod 3, armature spindle 4, left end cap 5, right end cap 6, bearing 7 and plastics inner nut 8.In plastics inner nut 8 is inlaid in armature spindle 4 and it is connected with screw rod 3 transmission.
Coordinate and see Fig. 3, Fig. 4, Fig. 5, Fig. 6, armature spindle 4 in the present invention is metal hollow axle, inwall at metal hollow axle is provided with the annular groove 41 for being embedded in plastics inner nut, annular groove wall is provided with for preventing plastics inner nut radial rotating and the concaveconvex structure moved axially, and in plastics inner nut 8 is inlaid in this annular groove 41 and engages with concaveconvex structure.
Coordinating and see Fig. 3, Fig. 4, the concaveconvex structure of one embodiment of the invention includes at least one disconnected groove of head and the tail 42 and/or at least one unconnected boss 43 of head and the tail.
Coordinating and see Fig. 5, Fig. 6, the concaveconvex structure of a preferred embodiment of the present invention is cancellous screw thread 44 arranged in a crossed manner.
The manufacture method of the present invention is, use the hollow rotating shaft of metal, and process (play groove, muscle, texturing or do screw thread etc.) at metal rotating shaft inwall, form groove or boss more irregular relative to inwall, then carry out being molded and formed plastics inner nut 8 from the side of hollow axle, groove or boss that metal hollow axle inwall processes have the effect of stop and anti-rotation to injection inner nut, thus ensure to be molded intact molding and its good strength in use of inner nut.One preferred embodiment of the present invention is, arranges the cancellous screw thread of intersection at inner wall of hollow shaft, and this kind of structure has good stop and anti-rotation effect, and is extremely beneficial to processing and produces in enormous quantities, feeds on hollow axle side and carries out injection formation inner nut 8.
Claims (1)
1. a step-by-step linear electric motor, including stator, rotor, armature spindle and screw rod, is provided with the plastics inner nut for being connected with screw drive in armature spindle；It is characterized in that: described armature spindle is metal hollow axle, inwall at metal hollow axle is provided with the annular groove for being embedded in plastics inner nut, annular groove wall is provided with for preventing plastics inner nut radial rotating and the concaveconvex structure moved axially, and in described plastics inner nut is inlaid in this annular groove and engages with concaveconvex structure；Described concaveconvex structure includes at least one disconnected groove of head and the tail and/or at least one unconnected boss of head and the tail.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210249560.1A CN103580370B (en) | 2012-07-18 | 2012-07-18 | Step-by-step linear electric motor |
| PCT/CN2013/077579 WO2014012409A1 (en) | 2012-07-18 | 2013-06-20 | Linear stepper motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210249560.1A CN103580370B (en) | 2012-07-18 | 2012-07-18 | Step-by-step linear electric motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103580370A CN103580370A (en) | 2014-02-12 |
| CN103580370B true CN103580370B (en) | 2016-08-03 |
Family
ID=49948249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210249560.1A Active CN103580370B (en) | 2012-07-18 | 2012-07-18 | Step-by-step linear electric motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103580370B (en) |
| WO (1) | WO2014012409A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009580A (en) * | 2014-06-16 | 2014-08-27 | 高如军 | Hollow shaft motor |
| CN106655607A (en) * | 2015-10-30 | 2017-05-10 | 北京精密机电控制设备研究所 | Rotor assembly of integrated lead screw |
| CN109050354B (en) | 2018-08-28 | 2021-01-05 | 延锋安道拓座椅机械部件有限公司 | Electric sliding rail |
| CN109861448B (en) * | 2019-01-24 | 2021-04-13 | 沈阳新松机器人自动化股份有限公司 | Small-size high-torque horizontal rotation lifting motor |
| WO2023061497A1 (en) * | 2021-10-17 | 2023-04-20 | 常州姆驰机电有限公司 | Groove-paired push rod device using plastic nut |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2240632Y (en) * | 1995-09-11 | 1996-11-20 | 唐宗才 | Composite self-locking screw rod |
| CN101873051A (en) * | 2009-04-27 | 2010-10-27 | 上海鸣志电器有限公司 | Stepping linear motor |
| CN202798312U (en) * | 2012-07-18 | 2013-03-13 | 上海鸣志电器股份有限公司 | Stepping linear motor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03293947A (en) * | 1990-04-11 | 1991-12-25 | Yaskawa Electric Corp | Electric linear drive device |
| ITTO20030856A1 (en) * | 2003-10-31 | 2005-05-01 | Skf Ab | LINEAR SCREW SCREW ACTUATOR WITH A SAFETY RELEASE DEVICE. |
| JP5756304B2 (en) * | 2011-02-22 | 2015-07-29 | ミネベア株式会社 | Linear actuator |
-
2012
- 2012-07-18 CN CN201210249560.1A patent/CN103580370B/en active Active
-
2013
- 2013-06-20 WO PCT/CN2013/077579 patent/WO2014012409A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2240632Y (en) * | 1995-09-11 | 1996-11-20 | 唐宗才 | Composite self-locking screw rod |
| CN101873051A (en) * | 2009-04-27 | 2010-10-27 | 上海鸣志电器有限公司 | Stepping linear motor |
| CN202798312U (en) * | 2012-07-18 | 2013-03-13 | 上海鸣志电器股份有限公司 | Stepping linear motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103580370A (en) | 2014-02-12 |
| WO2014012409A1 (en) | 2014-01-23 |
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