CN1189254A - Motor-driven cylinder - Google Patents
Motor-driven cylinder Download PDFInfo
- Publication number
- CN1189254A CN1189254A CN97190392A CN97190392A CN1189254A CN 1189254 A CN1189254 A CN 1189254A CN 97190392 A CN97190392 A CN 97190392A CN 97190392 A CN97190392 A CN 97190392A CN 1189254 A CN1189254 A CN 1189254A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- ball nut
- motor
- electric
- ball
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
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- Transmission Devices (AREA)
Abstract
A motor-driven cylinder with a novel configuration that can be used even at a narrow space where a conventional cylinder cannot be mounted and that has a length shorter than a conventional one which has the same stroke. The cylinder comprises a motor (1), a ball nut (4) linked to the motor (1) via a transmission member (3) and rotatable on the thrust bearing (5) mounted to the outer diameter portion, and a ball screw (6) screwed into the ball nut (4), with one end projecting outside the cylinder case (2).
Description
Technical field
The present invention relates to an electric cylinder, wherein, convert the rotational motion that electric notor produces to linear movement by a screw body.
Technical background
Known electric cylinder is widely used for various shop equipments and machine.Referring now to Fig. 2 a typical electric cylinder situation is described.The conventional cylinder of Fig. 2 is mainly by 11, one ball screws 16 that are connected with the rotating shaft 11A of electric notor 11 by actuated element 13 of an electric notor, and the ball nut 14 that matches with ball screw 16.A thrust bearing 15 is arranged in the ball nut end.Thrust bearing 15 is consolidated into one with cylinder casing 12.A pole 17 is fixed on the ball nut 14.In this electric cylinder, the rotating drive of the rotating shaft 11A by electric notor 11 comes ball screw 16 to rotate, and makes ball nut produce linear movement by this screw body.Therefore, the pole 17 that is fixed on the ball nut 14 is made front-rear reciprocation movement.
Yet when electric cylinder had identical stroke with oil cylinder and cylinder, the longitudinal size of above-mentioned electric cylinder certainly will be bigger than the latter.Therefore, electric cylinder with the shortcoming that oil cylinder is compared with cylinder is: because its bigger longitudinal size just can not be used electric cylinder at oil cylinder and the applicable local possibility of cylinder.
Disclosure of the Invention
The present invention will address the above problem.Its objective is the electric cylinder that a novel structure is provided, its longitudinal size is less than the conventional electric cylinder of the same stroke of tool.
In order to achieve the above object, electric cylinder of the present invention comprises: an electric notor, a ball nut that is connected with electric notor by actuated element, its rotating support is on the thrust bearing of placing around its periphery, and a ball screw that matches with ball nut, ball screw one end reaches the cylinder casing outside.
Summary of drawings
Fig. 1 is a vertical section, the major part of expression one embodiment of the invention,
Fig. 2 is a vertical section, the electric cylinder of expression prior art.
Implement mode of the present invention
Describe a preferred embodiment of the present invention in detail referring now to Fig. 1.Electric notor 1 is contained in the outside of cylinder casing 2.The axle 1A of electric notor 1 stretches in the cylinder casing.By actuated element 3, axle 1A is connected with ball nut 4.Be fixedly mounted on thrust bearing 5 on the cylinder casing 2 and be placed on the periphery of ball nut 4, thereby rotating support ball nut 4.Ball nut 4 matches with ball screw 4, and an end of ball screw 6 stretches out from cylinder casing 2.An end part 7 is fixed on an end that stretches out ball screw 6, and a guide 8 and a sliding bearing 9 are fixed on its other end simultaneously.A pair of dustproof bellows 10 is placed to such an extent that its interior outer end is connected with end part 7 with the cylinder casing 2 of ball screw 6 porch respectively.
The real work situation of above-mentioned electric cylinder now is described.By actuated element 3, the rotating drive of the axle 1A of electric notor 1 is passed to ball nut 4, thereby ball nut 4 is rotated.This rotating nut mechanism makes the ball screw 6 that matches with ball nut 4 move linearly.Because an end of ball screw stretches out cylinder casing 2, and have an end part 7 to be fixed on this end, the effect of ball screw seesaws corresponding to the rotation direction of electric notor 1 as pole.A pair of bellows 10 is corresponding to the motion of end part 7 and stretch out or withdraw, thereby prevents that dust is adsorbed onto on the ball screw 6.
The invention effect
See that from above-mentioned explanation is clear in electric cylinder of the present invention, thrust bearing is placed on and rolls The periphery of pearl nut, the ball nut that is rotated by electric notor moves linearly ball screw, thereby rolls The effect of ballscrew can be released object as the pole in the conventional cylinder. So, can save In the space that the ball wire rod end is put thrust bearing, can shorten its longitudinal size thus in the conventional cylinder. Cause And electric cylinder of the present invention even can be placed in the space that conventional cylinder can't hold.
Claims (1)
1. an electric cylinder comprises:
An electric notor,
A ball nut that is connected with electric notor by actuated element, its rotating support on thrust bearing of placing around its periphery, and
A ball screw that matches with ball nut, ball screw one end stretches out from cylinder casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97190392A CN1189254A (en) | 1996-04-19 | 1997-04-15 | Motor-driven cylinder |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP122499/96 | 1996-04-19 | ||
| CN97190392A CN1189254A (en) | 1996-04-19 | 1997-04-15 | Motor-driven cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1189254A true CN1189254A (en) | 1998-07-29 |
Family
ID=5178726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97190392A Pending CN1189254A (en) | 1996-04-19 | 1997-04-15 | Motor-driven cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1189254A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155523A (en) * | 2009-12-14 | 2011-08-17 | 哈米尔顿森德斯特兰德公司 | Torque reacting bellows seal for linear actuator |
| WO2012096390A1 (en) | 2011-01-13 | 2012-07-19 | Sintokogio, Ltd. | Electric cylinder and electric cylinder system |
| WO2013038729A1 (en) | 2011-09-14 | 2013-03-21 | Sintokogio, Ltd. | Electric cylinder and electric cylinder system |
| CN104505978A (en) * | 2014-04-29 | 2015-04-08 | 西北工业大学 | Linear actuator for nut-driving planetary roller screw assembly |
| CN105347086A (en) * | 2015-12-14 | 2016-02-24 | 重庆东登科技有限公司 | Photoelectric corrective mechanism adopting rust-proof electric cylinder for coil slitting machine |
| CN107505111A (en) * | 2017-08-29 | 2017-12-22 | 大连理工大学 | The marine environment compatibility test device of large-tonnage FLNG boat-carrying compressor models |
-
1997
- 1997-04-15 CN CN97190392A patent/CN1189254A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155523A (en) * | 2009-12-14 | 2011-08-17 | 哈米尔顿森德斯特兰德公司 | Torque reacting bellows seal for linear actuator |
| WO2012096390A1 (en) | 2011-01-13 | 2012-07-19 | Sintokogio, Ltd. | Electric cylinder and electric cylinder system |
| WO2013038729A1 (en) | 2011-09-14 | 2013-03-21 | Sintokogio, Ltd. | Electric cylinder and electric cylinder system |
| DE202012013094U1 (en) | 2011-09-14 | 2014-10-28 | Sintokogio, Ltd. | Electric cylinder and electric cylinder system |
| US9614418B2 (en) | 2011-09-14 | 2017-04-04 | Sintokogio, Ltd. | Electric cylinder and electric cylinder system |
| CN104505978A (en) * | 2014-04-29 | 2015-04-08 | 西北工业大学 | Linear actuator for nut-driving planetary roller screw assembly |
| CN105347086A (en) * | 2015-12-14 | 2016-02-24 | 重庆东登科技有限公司 | Photoelectric corrective mechanism adopting rust-proof electric cylinder for coil slitting machine |
| CN107505111A (en) * | 2017-08-29 | 2017-12-22 | 大连理工大学 | The marine environment compatibility test device of large-tonnage FLNG boat-carrying compressor models |
| CN107505111B (en) * | 2017-08-29 | 2019-07-16 | 大连理工大学 | The marine environment compatibility test device of large-tonnage FLNG boat-carrying compressor model |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |