CN202004581U - Linear actuator - Google Patents
Linear actuator Download PDFInfo
- Publication number
- CN202004581U CN202004581U CN2011201181167U CN201120118116U CN202004581U CN 202004581 U CN202004581 U CN 202004581U CN 2011201181167 U CN2011201181167 U CN 2011201181167U CN 201120118116 U CN201120118116 U CN 201120118116U CN 202004581 U CN202004581 U CN 202004581U
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- CN
- China
- Prior art keywords
- feed screw
- rotor
- flange
- screw nut
- connecting portion
- 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.)
- Expired - Fee Related
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model relates to a motor drive structure, in particular to a linear actuator, which comprises a shell, wherein a stator is fixed in the shell, a rotor is arranged in the stator, the rotor comprises a hollow shaft, the rotor is provided with a flange, a feed screw nut is fixed on the flange, a feed screw penetrates through the feed screw nut, the flange and the hollow shaft of the rotor, the flange and the feed screw nut are arranged in the shell, one end of the feed screw is fixed in the shell, and the other end of the feed screw extends out of the shell. When the linear actuator works, the rotor rotates to drive the feed screw nut to rotate, the feed screw is driven by the feed screw nut to do linear reciprocating motion so as to convert the circular motion of the rotor into the linear motion of the feed screw, and because the feed screw is positioned in the hollow shaft in the rotor, the prior situation that the feed screw is driven in a mode that a rotation shaft is connected with other components such as a coupler, a bearing seat and the like to change the linear motion by rotation is changed, and the components are simplified, so the structure of the linear actuator is more compact and ingenious, and the space needed for use and installation is reduced.
Description
Technical field
The utility model relates to a kind of motor drive mechanism, especially a kind of linear actuator.
Background technology
When existing motor driven screw mandrel is done straight reciprocating motion, usually join by a shaft coupling or bearing pedestal rotation axis and screw mandrel motor, the rotation of motor is converted into the rectilinear motion of screw mandrel by screw rod, but the space requirement that this class drive mechanism needs is bigger, causes integral body to take than large space.
Summary of the invention
The purpose of this utility model provides a kind of delicate structure, little linear actuator takes up room.
To achieve these goals, the utility model adopts following technical scheme:
It comprises a housing, the housing internal fixation has stator, comprises a housing, and the housing internal fixation has stator, described stator interior space is provided with rotor, its improvement is: the hollow space coaxial that described rotor comprises with rotation axis, a flange is installed in the hollow space of described rotor, and fix a feed screw nut on the flange, one screw mandrel passes the quill shaft of feed screw nut, flange and rotor, described flange, feed screw nut are located in the shell, and screw mandrel one end is fixing in the enclosure, and the other end stretches out in outside the housing.
Described flange comprises that the rotor connecting portion of a hollow reaches the feed screw nut's connecting portion perpendicular to the rotor connecting portion.
Described feed screw nut comprises that the screw mandrel connecting portion of a hollow reaches the flange connecting portion perpendicular to the screw mandrel connecting portion.
Described screw mandrel end is provided with one and prevents the stop deviate from when screw mandrel rotates.
Linear actuator of the present utility model is when work, rotor rotation drives the feed screw nut and rotates, the feed screw nut drives screw mandrel and does straight reciprocating motion, thereby the circular motion of rotor is converted into the rectilinear motion of screw mandrel, because screw mandrel is arranged in the quill shaft of rotor, the rotation axis that passes through that has changed in the past connects other parts as shaft coupling, bearing pedestal and so on and changes straight-line mode by rotation and come drive lead screw, parts have been simplified, make its structure compact more exquisite, dwindled and used and install required space.
Description of drawings
Fig. 1 is the structure chart of the utility model embodiment.
The utility model purpose, function and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
As shown in Figure 1, present embodiment comprise a housing 1, housing 1 internal fixation has stator 2, and described stator 2 inner spaces are provided with rotor 3, described rotor 3 hollow spaces 31 coaxial with rotation axis that comprise, one flange 4 is installed in the described hollow space 31, fix the quill shaft 31 that a feed screw nut 5, one screw mandrels 6 pass feed screw nut 5, flange 4 and rotor 3 on the flange 4, described flange 4, feed screw nut 5 are located in the shell 7, screw mandrel 6 one ends are fixed in the shell 7, and the other end stretches out in outside the housing 1.
In the present embodiment, described flange 4 comprises feed screw nut's connecting portion 42 that the rotor connecting portion 41 of a hollow reaches perpendicular to the rotor connecting portion.
Described feed screw nut 5 comprises the flange connecting portion 52 that the screw mandrel connecting portion 51 of a hollow reaches perpendicular to the screw mandrel connecting portion.
Deviate from when preventing that screw mandrel 6 from rotating, screw mandrel 6 ends described in the present embodiment are provided with one and prevent the stop 8 deviate from when screw mandrel 6 rotates.
The above only is a preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (4)
1. linear actuator, comprise a housing, the housing internal fixation has stator, and described stator interior space is provided with rotor, it is characterized in that: the hollow space coaxial with rotation axis that described rotor comprises, one flange is installed in the hollow space of described rotor, fix a feed screw nut on the flange, a screw mandrel passes the quill shaft of feed screw nut, flange and rotor, and described flange, feed screw nut are located in the shell, screw mandrel one end is fixing in the enclosure, and the other end stretches out in outside the housing.
2. linear actuator as claimed in claim 1 is characterized in that: described flange comprises that the rotor connecting portion of a hollow reaches the feed screw nut's connecting portion perpendicular to the rotor connecting portion.
3. linear actuator as claimed in claim 2 is characterized in that: described feed screw nut comprises that the screw mandrel connecting portion of a hollow reaches the flange connecting portion perpendicular to the screw mandrel connecting portion.
4. linear actuator as claimed in claim 3 is characterized in that: described screw mandrel end is provided with one and prevents the stop deviate from when screw mandrel rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201181167U CN202004581U (en) | 2011-04-20 | 2011-04-20 | Linear actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201181167U CN202004581U (en) | 2011-04-20 | 2011-04-20 | Linear actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202004581U true CN202004581U (en) | 2011-10-05 |
Family
ID=44707307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201181167U Expired - Fee Related CN202004581U (en) | 2011-04-20 | 2011-04-20 | Linear actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202004581U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103252683A (en) * | 2013-05-07 | 2013-08-21 | 天津大学 | Five-freedom-degree parallel-serial numerically-controlled machine tool |
| CN105071623A (en) * | 2015-08-21 | 2015-11-18 | 常州工学院 | Brushless linear motor |
| CN110486571A (en) * | 2019-09-03 | 2019-11-22 | 哈尔滨工业大学 | A kind of pipe robot |
-
2011
- 2011-04-20 CN CN2011201181167U patent/CN202004581U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103252683A (en) * | 2013-05-07 | 2013-08-21 | 天津大学 | Five-freedom-degree parallel-serial numerically-controlled machine tool |
| CN105071623A (en) * | 2015-08-21 | 2015-11-18 | 常州工学院 | Brushless linear motor |
| CN105071623B (en) * | 2015-08-21 | 2017-10-17 | 常州工学院 | A kind of brushless linear motor |
| CN110486571A (en) * | 2019-09-03 | 2019-11-22 | 哈尔滨工业大学 | A kind of pipe robot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHENZHEN VENISON AUTOMATION TECHNOLOGY CO., LTD. Assignor: Wang Baowei Contract record no.: 2011440020380 Denomination of utility model: Variable-focus human eyeball imitation structure driven by linear performer Granted publication date: 20111005 License type: Exclusive License Record date: 20111019 |
|
| 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: 20111005 Termination date: 20160420 |