CN202371100U - Double-nut transmission device used for electric drive pusher - Google Patents
Double-nut transmission device used for electric drive pusher Download PDFInfo
- Publication number
- CN202371100U CN202371100U CN2011204762523U CN201120476252U CN202371100U CN 202371100 U CN202371100 U CN 202371100U CN 2011204762523 U CN2011204762523 U CN 2011204762523U CN 201120476252 U CN201120476252 U CN 201120476252U CN 202371100 U CN202371100 U CN 202371100U
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- China
- Prior art keywords
- nut
- double
- elastic body
- screw rod
- transmission
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- 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 - Lifetime
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Abstract
The utility model discloses a double-nut transmission device used for an electric drive pusher. The device comprises a main nut and an assistant nut, wherein an elastic body is arranged between the main nut and the assistant nut, and one end of the elastic body is abutted to an inner wall of the main nut, and the other end of the elastic body is abutted to an end surface of the assistant nut, so that the elastic body is fixed between the main nut and the assistant nut. According to the device disclosed by the utility model, a gap between a screw rod and the nut can be eliminated so as to realize gapless transmission, and the transmission precision, particularly the reverse precision, is improved. A double-nut mechanism makes the transmission more stable, and the service life of the nuts is prolonged. The double-nut mechanism is contacted with thread-shaped left and right side surfaces of the screw rod so as to enlarge the transmission contact area and improve the self-locking force of the electric drive pusher. Because the main nut and the assistant nut are connected by the elastic body, the left and right side surfaces of the screw rod and the nuts are completely contacted, and gap elimination and automatic compensation after abrasion are realized so as to ensure the size precision of the nuts and the screw rod, particularly screw pitch errors make the manufacturing precision of the nuts and screw rod reduced, and the manufacturing cost is reduced.
Description
Technical field
The utility model relates to a kind of electric pushrod and uses the double nut transmission device.
Background technique
Electric pushrod is that a kind of motor slows down through worm and gear or gear pair, and feed screw nut's transmission realizes that circular movement is converted into straight-line device.Nut is very important to the effect of straight-line direct parts in entire product as circular movement, and the nut long-play damages, and will have potential safety hazard, even whole electric pushrod is with regard to cisco unity malfunction.
The model utility content
The purpose of the utility model is to provide electric pushrod to use the double nut transmission device, can solve effectively that the nut long-play damages in the existing electric pushrod, will have potential safety hazard, even make the problem of whole electric pushrod cisco unity malfunction.
In order to solve the problems of the technologies described above, the utility model adopts following technological scheme:
Electric pushrod is used the double nut transmission device; It is characterized in that: comprise mother nut and secondary nut, be provided with elastomer between mother nut and the secondary nut, elastomer one end props up the inwall of mother nut; The elastomeric the other end props up the end face of secondary nut, and elastomer is fixed between mother nut and the secondary nut.
Preferably, elastomer adopts spring.
The utility model has following beneficial effect owing to adopted technique scheme: make that the gap is able to eliminate between screw mandrel and the nut, realizes the transmission of no gap, improved transmission accuracy, especially oppositely precision; Double nut mechanism makes transmission more steady, the working life of having improved nut because drive gap can be eliminated automatically; Double nut mechanism all contacts with the thread profile left and right side of screw mandrel, has strengthened the transmission surface of contact, and the self-lock force of electric pushrod is improved greatly; Because flexible body connects between the major-minor nut; Make that the left and right side of screw mandrel and nut is intact to be contacted and the realization automatic compensation after crack and the wearing and tearing that disappears, thereby guarantee dimensional accuracy, the especially pitch error of nut and screw mandrel; The accuracy of manufacturing of nut and screw mandrel is reduced, reduced manufacture cost.The utility model is simple in structure, manufacturing is easy, cost is low, practical.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the structural representation of the utility model electric pushrod with the double nut transmission device;
Fig. 2 is the sectional view of the utility model electric pushrod with the double nut transmission device.
Embodiment
As depicted in figs. 1 and 2; Use the double nut transmission device for the utility model electric pushrod, comprise mother nut 1 and secondary nut 3, be provided with elastomer 2 between mother nut 1 and the secondary nut 3; Elastomer 2 adopts spring; Spring one end props up the inwall of mother nut 1, and the other end of spring props up the end face of secondary nut 3, and spring is fixed between mother nut 1 and the secondary nut 3.
More than be merely the specific embodiment of the utility model, but the technical characteristics of the utility model is not limited thereto.Any is the basis with the utility model, for realizing essentially identical technique effect, has done the ground simple change, has been equal to replacement or modification etc., all is covered by among the protection domain of the utility model.
Claims (2)
1. electric pushrod is used the double nut transmission device; It is characterized in that: comprise mother nut (1) and secondary nut (3); Be provided with elastomer (2) between said mother nut (1) and the secondary nut (3); Said elastomer (2) one ends prop up the inwall of said mother nut (1), and the other end of said elastomer (2) props up the end face of said secondary nut (3), and said elastomer (2) is fixed between said mother nut (1) and the said secondary nut (3).
2. electric pushrod according to claim 1 is used the double nut transmission device, it is characterized in that: said elastomer (2) adopts spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204762523U CN202371100U (en) | 2011-11-25 | 2011-11-25 | Double-nut transmission device used for electric drive pusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204762523U CN202371100U (en) | 2011-11-25 | 2011-11-25 | Double-nut transmission device used for electric drive pusher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202371100U true CN202371100U (en) | 2012-08-08 |
Family
ID=46594804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204762523U Expired - Lifetime CN202371100U (en) | 2011-11-25 | 2011-11-25 | Double-nut transmission device used for electric drive pusher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202371100U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810975A (en) * | 2022-04-21 | 2022-07-29 | 江苏华丽智能科技股份有限公司 | Gap adjusting transmission rod for electric push rod, electric push rod and adjusting method |
-
2011
- 2011-11-25 CN CN2011204762523U patent/CN202371100U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810975A (en) * | 2022-04-21 | 2022-07-29 | 江苏华丽智能科技股份有限公司 | Gap adjusting transmission rod for electric push rod, electric push rod and adjusting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |
|
| CX01 | Expiry of patent term |