CN2651519Y - Electric push rod of worm-gear pair - Google Patents
Electric push rod of worm-gear pair Download PDFInfo
- Publication number
- CN2651519Y CN2651519Y CN 03222122 CN03222122U CN2651519Y CN 2651519 Y CN2651519 Y CN 2651519Y CN 03222122 CN03222122 CN 03222122 CN 03222122 U CN03222122 U CN 03222122U CN 2651519 Y CN2651519 Y CN 2651519Y
- Authority
- CN
- China
- Prior art keywords
- screw mandrel
- steel ball
- worm
- push rod
- worm gear
- 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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- Transmission Devices (AREA)
Abstract
The utility model relates to an electric push rod of a worm and worm gear for the electric operator in order to realize the automatic control, belonging to an electric drive device of the reciprocating motion, which comprises a screw mandrel, a push rod, a guide pipe and a shell body. The utility model is characterized in that a worm gear connecting sleeve is arranged on the screw mandrel, one end of the screw mandrel is provided with a bearing, a steel ball and a fixed rack, the steel ball is arranged on the fixed rack, a convex spring presses the steel ball, the screw mandrel is provided with a worm gear, and the worm gear is connected with the worm. The utility model has the advantages of the simple, compact and reasonable structure, the low production cost, the convenient use and installation, the small volume and quality and the reliable and stable performance; the motor isn't easily burnt out when the stroke switch goes wrong; as one end of the screw mandrel is provided with the gear connecting sleeve, the steel ball, the fixed rack and the convex spring and skidded with screw mandrel on the torsional moment through the clutch action, the push rod generates the overload protection for the motor in the operating process, and can prevent the overloading action and be widely used in the electric operator of various industries in order to realize the automatic control.
Description
Technical field:
The utility model relates to a kind of electric pushrod of worm and gear, is used for electric actuator to realize automatic control, belongs to a kind of reciprocating electric driver.
Background technique:
Before the utility model was made, in prior art, the electric pushrod that is used for electric actuator mainly was made up of screw mandrel, push rod, conduit, housing and overload protection arrangement.Its overload protection arrangement adopts helical spring to be pressed on the screw mandrel.The helical compression spring pressurized that the electric pushrod of this kind structure is to use promotes the position limit switch power-off protection by driving lever, thereby reaches the overload protection motor.Its deficiency is that volume is big, the electric appliance circuits complexity; Easy burn-out motor when position limit switch breaks down.
Summary of the invention:
The purpose of this utility model is to overcome above-mentioned deficiency, thereby provides a kind of simple, compact and reasonable for structure; Volume is little, and quality is little, flexibility and reliability; Can effectively protect motor, prevent the electric pushrod of the worm and gear of overload effect.
Main solution of the present utility model is achieved in that
It mainly adopts screw mandrel 11 to be installed in the housing 10, copper nut 12 is installed on the screw mandrel 11, and push rod 14 is installed on the screw mandrel 11, and conduit 13 is installed on the housing 10, it is characterized in that worm gear connecting sleeve 7 is installed on the screw mandrel 11, bearing 1,8 is installed in respectively on the screw mandrel 11, and steel ball fixing frame 3 is installed on the screw mandrel 11, and steel ball 4 is contained on the steel ball fixing frame 3, adopt convex spring 2 to push down steel ball 4, worm gear 5 is installed on the screw mandrel 11, worm screw 6 and worm gear 5 engagements, worm gear 6 is connected on the housing 10.
Compared with the prior art the utility model has the following advantages:
The utility model is simple, compact and reasonable for structure; Low cost of manufacture, easy to install and use; Volume is little, quality is little, and reliable performance is stable; Easy burn-out motor not when position limit switch breaks down; Owing to adopt gear connecting sleeve, steel ball, fixing frame and convex spring are housed on screw mandrel one end; and cross moment of torsion with screw mandrel by clutch action and produce and to skid; thereby make push rod the overload protection motor in running, occur; can prevent the overload effect; and can be widely used in the electric actuator of all trades and professions, to realize automatic control.
Description of drawings:
Fig. 1 is the utility model structural representation;
Embodiment:
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
The utility model mainly adopts bearing 1,8 to be installed in respectively on the screw mandrel 11, and worm gear connecting sleeve 7 is installed on the screw mandrel 11, and steel ball fixing frame 3 is installed on (cover) screw mandrel 11, and the steel ball 4 steel ball fixing frame 3 of packing into adopts the convex spring to push down steel ball 2.Installation worm gear 5, worm screw 6 are connected on the housing 10 on the screw mandrel 11, and mesh with worm gear 5, and motor connects worm screw.Nut 9 is fastened on the screw mandrel 11, and screw mandrel 11 is installed in the housing 10, and copper nut 12 is installed on the screw mandrel 11, push rod 14 is installed on the screw mandrel 11, and cooperates with copper nut 12, and seal ring 15 is installed on the conduit 13, be installed in conduit 13 on the housing 10, connect connecting head 16 on the push rod 14.
The utility model is to utilize on the screw mandrel end tooth wheel connecting sleeve, steel ball, steel ball fixing frame and convex spring to cross the moment of torsion generation with screw mandrel by clutch action to skid, thereby makes push rod the overload protection motor occur in running.The utility model also is pressed in by the convex spring simultaneously and produces friction torque on a plurality of steel balls and be bonded together.These two moment sums make gear and screw mandrel rotate synchronously just when proper functioning, thereby gear skids with the screw mandrel generation when making push rod promote to run to the two ends overload, thereby play the protection motor, prevent the overload effect.
Claims (1)
1. the electric pushrod of a worm and gear, it mainly adopts screw mandrel (11) to be installed in the housing (10), screw mandrel (11) is gone up copper nut (12) is installed, push rod (14) is installed on the screw mandrel (11), conduit (13) is installed on the housing (10), it is characterized in that worm gear connecting sleeve (7) is installed on the screw mandrel (11), bearing (1), (8) be installed in respectively on the screw mandrel (11), steel ball fixing frame (3) is installed on the screw mandrel (11), steel ball (4) is contained on the steel ball fixing frame (3), adopts convex spring (2) to push down steel ball (4), and screw mandrel (11) is gone up worm gear (5) is installed, worm screw (6) and worm gear (5) engagement, worm gear (6) is connected on the housing (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03222122 CN2651519Y (en) | 2003-05-21 | 2003-05-21 | Electric push rod of worm-gear pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03222122 CN2651519Y (en) | 2003-05-21 | 2003-05-21 | Electric push rod of worm-gear pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2651519Y true CN2651519Y (en) | 2004-10-27 |
Family
ID=34325916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03222122 Expired - Fee Related CN2651519Y (en) | 2003-05-21 | 2003-05-21 | Electric push rod of worm-gear pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2651519Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220854B (en) * | 2008-01-24 | 2010-06-30 | 李芬 | Motor push rod |
| US7866225B2 (en) | 2006-02-14 | 2011-01-11 | Robert Bosch Gmbh | Spindle drive, in particular for adjusting a movable part in a motor vehicle, and a method for manufacturing this spindle drive |
| CN112696114A (en) * | 2019-10-22 | 2021-04-23 | Ebe机电元件有限公司 | Device for automatically opening a door of a household appliance and household appliance |
-
2003
- 2003-05-21 CN CN 03222122 patent/CN2651519Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7866225B2 (en) | 2006-02-14 | 2011-01-11 | Robert Bosch Gmbh | Spindle drive, in particular for adjusting a movable part in a motor vehicle, and a method for manufacturing this spindle drive |
| CN101384835B (en) * | 2006-02-14 | 2011-01-26 | 罗伯特.博世有限公司 | Spindle drive, in particular for adjusting a moveable part in a motor vehicle, and method for producing said spindle drive |
| CN101220854B (en) * | 2008-01-24 | 2010-06-30 | 李芬 | Motor push rod |
| CN112696114A (en) * | 2019-10-22 | 2021-04-23 | Ebe机电元件有限公司 | Device for automatically opening a door of a household appliance and household appliance |
| CN112696114B (en) * | 2019-10-22 | 2023-08-29 | Ebe机电元件有限公司 | Device for automatically opening a door of a household appliance and household appliance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |