CN201850990U - Sheave type lead screw limiter - Google Patents
Sheave type lead screw limiter Download PDFInfo
- Publication number
- CN201850990U CN201850990U CN2010205885085U CN201020588508U CN201850990U CN 201850990 U CN201850990 U CN 201850990U CN 2010205885085 U CN2010205885085 U CN 2010205885085U CN 201020588508 U CN201020588508 U CN 201020588508U CN 201850990 U CN201850990 U CN 201850990U
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- CN
- China
- Prior art keywords
- sheave
- lead screw
- screw mandrel
- torsion spring
- base
- 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 - Lifetime
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Abstract
A sheave type lead screw limiter is characterized in that a lead screw is mounted on a base, one end of the lead screw extending out of the base is connected with a driven gear, sheaves are in screw-thread pair fit with the lead screw, torsional springs are fixe on the inner sides of two ends of the base, clasps of the torsional springs are fastened in tooth spaces of the sheaves, and stroke switches matched with the sheaves are arranged on two sides of the lead screw. The sheaves move axially along the lead screw to trigger a microswitch, thereby the limiter realizes limiting function. In addition, the sheave type lead screw limiter has the advantages of compact structure, small volume, light weight, convenience in debugging and accuracy and reliability in limiting.
Description
Technical field
The utility model relates to a kind of stopping means, particularly a kind of grooved pulley type screw mandrel stop that is applicable to the electric rolling door device that various conventional rolling door open and close.
Background technology
At present, the stop of the rolling door headstock gear of producing is the cam-type stop both at home and abroad, this kind stop is owing to two relative deep-slotted chip breakers that use two screws to pass on the cam are fixed on cam on the Positioning Gear, cause in tightening the process of screw and originally swing, cause captured offset with the cam of adjusting; And, because the characteristic of cam motion itself causes spacing stroke limiting.So it is big that this kind stop has a volume, the cost height, stroke is short, is difficult for shortcomings such as debugging is accurate.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of grooved pulley type screw mandrel stop, has that volume is little, quality is little, a compact conformation and debug advantage easily, and safe and reliable.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of grooved pulley type screw mandrel stop, and screw mandrel is installed on the base, and screw mandrel stretches out an end and is connected with driven gear; Sheave is that screw thread pair cooperates with screw mandrel; Torsion spring is fixed on inboard, base two ends, in the latch closure card entry slot wheel teeth groove of torsion spring; The travel switch apportion screw mandrel both sides that cooperate with sheave.
Described base adopts the YL104 aluminium alloys to make.
Described driven gear, sheave adopt powder metallurgy to make.
Described torsion spring adopts the block form torsion spring, and its latch closure snaps in the teeth groove of sheave.
The quantity of described sheave is two, and the quantity of the travel switch that cooperates with sheave is four.
The grooved pulley type screw mandrel stop that the utility model provides owing to move axially along screw mandrel by sheave, triggers microswitch, thereby realizes limit function, has compact conformation, volume is little, quality is little, debugging is convenient, spacing advantage accurately and reliably.
Two near the base two ends in four travel switches that adopt is spacing protection switch, when middle two switches occur damaging or be malfunctioning, can guarantee to cut off motor power, so that in time change travel switch, realizes safeguard protection.
The torsion spring only with hand that adopts refers to pluck out from the sheave teeth groove and can conveniently adjust sheave to desired location, need not other aids and saves the space.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is an overall structure front view of the present utility model;
Fig. 2 is an overall structure vertical view of the present utility model.
The specific embodiment
As depicted in figs. 1 and 2, a kind of grooved pulley type screw mandrel stop, screw mandrel 5 is installed on the base 2, and screw mandrel 5 stretches out an end and is connected with driven gear 1; Sheave 3 cooperates for screw thread pair with screw mandrel 5; Torsion spring 6 is fixed on inboard, base 2 two ends, and the latch closure of torsion spring 6 snaps in the teeth groove of sheave 3; Travel switch 4 apportion screw mandrels 5 both sides that cooperate with sheave 3.
Described torsion spring 6 adopts the block form torsion spring, and the latch closure of torsion spring 6 snaps in the teeth groove of sheave 3.
The quantity of described sheave 3 is two, and the quantity of the travel switch 4 that cooperates with sheave 3 is four.
Described base 2 adopts the YL104 aluminium alloys to make.
Described driven gear 1, sheave 3 adopt powder metallurgy to make.
The course of work of the present utility model is: the power that is passed over by the rolling door headstock gear drives screw mandrel 5 rotations through driven gear 1, screw mandrel 5 is given sheave 3 through screw thread pair with transmission of power, owing to be fixed on the torsion spring 6 on the base 2, the latch closure of torsion spring 6 snaps in the teeth groove of sheave 3, limited sheave 3 and radially rotated, thus sheave 3 can only move axially along screw mandrel 5, when moving on to sheave 3 depression stroke switches 4 when needing the position, cut off the electricity supply, thereby realize limit function.When needs are adjusted spacing height, from the sheave teeth groove, pluck out the manual adjustments sheave to desired location with finger, thereby adjust spacing height.
Claims (3)
1. grooved pulley type screw mandrel stop, it is characterized in that: screw mandrel (5) is installed on the base (2), and screw mandrel (5) stretches out an end and is connected with driven gear (1); Sheave (3) cooperates for screw thread pair with screw mandrel (5); Torsion spring (6) is fixed on base (2) inboard, two ends, and the latch closure of torsion spring (6) snaps in the teeth groove of sheave (3); Travel switch (4) apportion screw mandrel (5) both sides that cooperate with sheave (3).
2. grooved pulley type screw mandrel stop according to claim 1 is characterized in that: described torsion spring (6) adopts the block form torsion spring, and the latch closure of torsion spring (6) snaps in the teeth groove of sheave (3).
3. grooved pulley type screw mandrel stop according to claim 1 is characterized in that: the quantity of described sheave (3) is two, and the quantity of the travel switch (4) that cooperates with sheave (3) is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205885085U CN201850990U (en) | 2010-11-03 | 2010-11-03 | Sheave type lead screw limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205885085U CN201850990U (en) | 2010-11-03 | 2010-11-03 | Sheave type lead screw limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201850990U true CN201850990U (en) | 2011-06-01 |
Family
ID=44093389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205885085U Expired - Lifetime CN201850990U (en) | 2010-11-03 | 2010-11-03 | Sheave type lead screw limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201850990U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956518A (en) * | 2010-11-03 | 2011-01-26 | 宜昌四八二○机电有限公司 | Grooved wheel type screw rod limiter |
| CN103234014A (en) * | 2013-05-03 | 2013-08-07 | 西南交通大学 | Multi-branch adjustable stroke limiter |
| CN109653671A (en) * | 2019-01-23 | 2019-04-19 | 杭州安帘节能科技有限公司 | It is a kind of unidirectionally to pull roller shutter and its control mode |
-
2010
- 2010-11-03 CN CN2010205885085U patent/CN201850990U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956518A (en) * | 2010-11-03 | 2011-01-26 | 宜昌四八二○机电有限公司 | Grooved wheel type screw rod limiter |
| CN101956518B (en) * | 2010-11-03 | 2012-07-25 | 宜昌四八二0机电有限公司 | Grooved wheel type screw rod limiter |
| CN103234014A (en) * | 2013-05-03 | 2013-08-07 | 西南交通大学 | Multi-branch adjustable stroke limiter |
| CN109653671A (en) * | 2019-01-23 | 2019-04-19 | 杭州安帘节能科技有限公司 | It is a kind of unidirectionally to pull roller shutter and its control mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110601 Effective date of abandoning: 20120725 |