CN103580370A - Stepping linear motor - Google Patents
Stepping linear motor Download PDFInfo
- Publication number
- CN103580370A CN103580370A CN201210249560.1A CN201210249560A CN103580370A CN 103580370 A CN103580370 A CN 103580370A CN 201210249560 A CN201210249560 A CN 201210249560A CN 103580370 A CN103580370 A CN 103580370A
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- CN
- China
- Prior art keywords
- rotor
- inner nut
- armature spindle
- concaveconvex structure
- nut
- 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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- 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
Provided is a stepping linear motor which comprises a stator, a rotor, a rotor shaft and a screw rod. The rotor shaft is internally provided with a plastic internal nut which is used for being connected with the screw rod in a transmission way. The rotor shaft is a metal hollow shaft. The internal wall of the metal hollow shaft is provided with a ring groove which is used for embedding the plastic internal nut. The wall of the ring groove is provided with a concave-convex structure which is used for preventing the plastic internal nut from radial rotation and axial movement. The plastic internal nut is embedded inside the ring groove and engaged with the concave-convex structure. According to the stepping linear motor, the rotor is relatively high in the service life, great in anti-rotating and stopping performance, high in injection molding nut intensity, relatively high in transmission efficiency, relatively low in heat radiation, great in injection molding degree, relatively high in transmission accuracy, etc.
Description
Technical field
The present invention relates to motor, relate in particular to a kind of step-by-step linear electric motor.
Background technology
Step-by-step linear electric motor is by screw rod, to be converted to straight-line motor by rotatablely moving.The step-by-step linear electric motor of prior art is by female thread structure is made in the armature spindle inside rotating, and then is inserted in screw rod, drives screw rod to seesaw, as shown in Figure 1 to realize when motor rotates.But in armature spindle inside, directly do screw thread, can cause the lost of life of rotor.Improved way is to be embedded in one with the plastic screw element of self-lubricating function at armature spindle.And how plastics are connected with rotor, with regard to the problem that has become each producer to solve.
A kind of way of prior art is to beat a plurality of through holes in armature spindle central peripheral, then by these through holes direct injection-molded plastic inner nut in armature spindle, as shown in Figure 2.This way, owing to having beaten a plurality of through holes 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
Object of the present invention, the problem existing in order to solve above-mentioned prior art exactly, provides a kind of step-by-step linear electric motor.
In order to achieve the above object, the present invention has adopted following technical scheme: a kind of step-by-step linear electric motor, comprise stator, rotor, armature spindle and screw rod, and in armature spindle, be provided with the plastics inner nut for being connected with screw drive; Armature spindle is wherein metal hollow axle, inwall at metal hollow axle is provided with the annular groove for setting-in plastics inner nut, annular groove wall is provided with for preventing plastics inner nut radial rotating and axially movable concaveconvex structure, and described plastics inner nut is inlaid in this annular groove and meshes with concaveconvex structure.
Described concaveconvex structure comprises at least one disconnected groove of head and the tail and/or the unconnected boss of at least one head and the tail.
Described concaveconvex structure is netted screw thread arranged in a crossed manner.
Step-by-step linear electric motor of the present invention, due to the employing above technical scheme of knowing clearly, has following advantage and disadvantage:
1. the useful life of rotor is higher.
2. anti-rotation stop performance is good, and injection moulding 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. be beneficial to armature spindle and rotor is produced in batches and huge stocks, can deal with the client that different lead requires by the different plastics inner nut of injection moulding, 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.
Embodiment
Referring to Fig. 7, step-by-step linear electric motor of the present invention, comprise 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.Plastics inner nut 8 is inlaid in armature spindle 4 and is connected with screw rod 3 transmissions.
Cooperation is referring to 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 setting-in plastics inner nut, annular groove wall is provided with for preventing plastics inner nut radial rotating and axially movable concaveconvex structure, and plastics inner nut 8 is inlaid in this annular groove 41 and meshes with concaveconvex structure.
Cooperation is referring to Fig. 3, Fig. 4, and the concaveconvex structure of one embodiment of the invention comprises at least one disconnected groove 42 of head and the tail and/or the unconnected boss 43 of at least one head and the tail.
Cooperation is referring to Fig. 5, Fig. 6, and the concaveconvex structure of a preferred embodiment of the present invention is netted screw thread 44 arranged in a crossed manner.
Manufacture method of the present invention is, adopt the hollow rotating shaft of metal, and at metal rotating shaft inwall, process (play groove, muscle, texturing or do screw thread etc.), formation is with respect to the more irregular grooves of inwall or boss, then from the side of hollow shaft, carry out injection moulding and form plastics inner nut 8, the groove that metal hollow axle inwall processes or boss have the effect of stop and anti-rotation to injection moulding inner nut, thus the intact moulding that guarantees injection moulding inner nut with and good strength in use.A preferred embodiment of the present invention is, the netted screw thread of intersection is set at inner wall of hollow shaft, this kind of structure has good stop and anti-rotation effect, and is very beneficial to processing and produces in enormous quantities, and then in the charging of hollow shaft side and carry out injection moulding and form inner nut 8.
Claims (3)
1. a step-by-step linear electric motor, comprises 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 setting-in plastics inner nut, annular groove wall is provided with for preventing plastics inner nut radial rotating and axially movable concaveconvex structure, and described plastics inner nut is inlaid in this annular groove and meshes with concaveconvex structure.
2. step-by-step linear electric motor according to claim 1, is characterized in that: described concaveconvex structure comprises at least one disconnected groove of head and the tail and/or the unconnected boss of at least one head and the tail.
3. step-by-step linear electric motor according to claim 1, is characterized in that: described concaveconvex structure is netted screw thread arranged in a crossed manner.
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 true CN103580370A (en) | 2014-02-12 |
| CN103580370B 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) |
Cited By (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 |
| CN109050354A (en) * | 2018-08-28 | 2018-12-21 | 延锋安道拓座椅机械部件有限公司 | A kind of electric sliding rail |
| CN109861448A (en) * | 2019-01-24 | 2019-06-07 | 沈阳新松机器人自动化股份有限公司 | A kind of small high-torque horizontal rotation promotion 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 (4)
| 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 |
| US20120210810A1 (en) * | 2011-02-22 | 2012-08-23 | Minebea Co., Ltd. | Linear actuator |
| 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 (2)
| 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. |
-
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 (4)
| 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 |
| US20120210810A1 (en) * | 2011-02-22 | 2012-08-23 | Minebea Co., Ltd. | Linear actuator |
| CN202798312U (en) * | 2012-07-18 | 2013-03-13 | 上海鸣志电器股份有限公司 | Stepping linear motor |
Cited By (10)
| 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 |
| CN109050354A (en) * | 2018-08-28 | 2018-12-21 | 延锋安道拓座椅机械部件有限公司 | A kind of electric sliding rail |
| WO2020042946A1 (en) * | 2018-08-28 | 2020-03-05 | 延锋安道拓座椅机械部件有限公司 | Novel electric slide rail |
| EP3845411A4 (en) * | 2018-08-28 | 2021-10-20 | Keiper Seating Mechanisms Co., Ltd. | Novel electric slide rail |
| JP2021535859A (en) * | 2018-08-28 | 2021-12-23 | ▲カイ▼博座椅機械部件有限公司 | New electric slide rail |
| US11400835B2 (en) | 2018-08-28 | 2022-08-02 | Keiper Seating Mechanisms Co., Ltd. | Power slide |
| JP7116845B2 (en) | 2018-08-28 | 2022-08-10 | ▲カイ▼博座椅機械部件有限公司 | New electric slide rail |
| CN109861448A (en) * | 2019-01-24 | 2019-06-07 | 沈阳新松机器人自动化股份有限公司 | A kind of small high-torque horizontal rotation promotion 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103580370B (en) | 2016-08-03 |
| WO2014012409A1 (en) | 2014-01-23 |
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| C14 | Grant of patent or utility model | ||
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