CN202596411U - Electronic limit device for door openers - Google Patents
Electronic limit device for door openers Download PDFInfo
- Publication number
- CN202596411U CN202596411U CN2012202027452U CN201220202745U CN202596411U CN 202596411 U CN202596411 U CN 202596411U CN 2012202027452 U CN2012202027452 U CN 2012202027452U CN 201220202745 U CN201220202745 U CN 201220202745U CN 202596411 U CN202596411 U CN 202596411U
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- CN
- China
- Prior art keywords
- potentiometer
- motor
- shaft
- limit device
- electronic limit
- 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
The utility model relates to an electronic limit device, in particular to an electronic limit device for door openers. The electronic limit device comprises a motor, a motor shaft on the motor and an output shaft connected with the motor shaft, wherein a potentiometer is connected with a worm-wheel shaft by a potentiometer connecting shaft; and a friction protective device is arranged between the potentiometer and a transmission shaft. The electronic limit device is high in adaptability, accurate in positioning, high in reliability and wide in application range, and is suitable for the limit of various door openers.
Description
Technical field
The utility model relates to a kind of electronic limit device, relates in particular to a kind of electronic limit device that is used for door lifter.
Background technology
At present; The limit method that upward-acting door machine in market adopts has: machinery or contact switch are spacing, optoelectronic switch is spacing, Hall element magnetic is spacing etc.; All be employed in door open limit point and the spacing point of closing the door respectively is provided with the method for a limit element; Signal triggering door machine through limit element is out of service, and all there are shortcomings such as spacing adjusting is inconvenient, accuracy not directly perceived, spacing is not high, easy variation in these methods, sometimes need to regulate repeatedly the position that could confirm door machine limit switch.And in door machine running, running status that can not the control door body can't be judged faults such as motor is stuck, stall.
Summary of the invention
In order to overcome above-mentioned defective; The purpose of the utility model is; A kind of electronic limit device that is used for door lifter that adopts the potentiometer resistance value to detect is provided; Not only open and close thresholding position can be set simply and easily, the run location and the state of all right complete monitoring door body, and can in time adjust automatically.
In order to achieve the above object; The utility model adopts following technical scheme: a kind of electronic limit device that is used for door lifter; It comprises motor; Motor shaft on the motor, the output shaft that is connected with motor shaft, potentiometer is connected with worm-wheel shaft through the potentiometer connecting axle, and a friction protective device is installed between potentiometer and power transmission shaft.
Thread bush of cover on worm-wheel shaft is installed a gear and is meshed with it on the potentiometer connecting axle.
The door lifter output shaft is connected in the rotating shaft of potentiometer through after the speed change, and when motor moved, rotation was followed in the potentiometer rotating shaft, and corresponding resistance value also changes.Therefore, the mechanical trip (door open limit is to the spacing distance of closing the door) of door body just can be represented with the different resistance values that potentiometer changes.The resistance value process AD conversion of potentiometer is input to single-chip microcomputer, and single-chip microcomputer just can be discerned the run location of motor.Single-chip microcomputer only need be remembered the resistance value of spacing point of opening the door and close the door of a machine, and is kept in the memory.When motor moved, single-chip microcomputer constantly detected the resistance value of potentiometer, and with memory in spacing resistance value relatively, judge that if do not reach spacing resistance value, single-chip microcomputer will control motor and continue to move; If operation arrives open and close thresholding position resistance value, single-chip microcomputer is immediately through overdrive circuit, relay circuit, and the control motor stops.Can also carry out acceleration and deceleration control to motor in advance by program, prevent that effectively machinery is towards spacing.
The advantage of the utility model is:
1. the utility model cost is low, advantages of small volume, and it is convenient to install, debug.
2. strong, the accurate positioning of the utility model compliance, reliability are high.
3. the utility model is of many uses, is fit to the spacing of all kinds of door lifters.
Description of drawings
Fig. 1 is the external structure sketch map of the utility model.
Fig. 2 is the internal construction sketch map of the utility model.
The specific embodiment
Be described in detail below in conjunction with 1,2 pairs of the utility model of accompanying drawing: a kind of electronic limit device that is used for door lifter; It comprises motor 1; Motor shaft 2 on the motor 1, the output shaft 3 that is connected with motor shaft 2; Potentiometer 4 is connected with worm-wheel shaft 7 through potentiometer connecting axle 6, and a friction protective device 5 is installed between potentiometer 4 and power transmission shaft.
Thread bush of cover on worm-wheel shaft 7 is installed a gear and is meshed with it on the potentiometer connecting axle 6.Their gearratio is met the demands.
A friction protective device 5 can be installed between potentiometer and power transmission shaft; The protection potential device is after potentiometer turns to the regulation number of turns, if motor is also in output; Can skid between potentiometer clutch cover and the potentiometer protection gear so, the protection potential device can not damage.
In sum, can know that the potentiometer of the utility model also can adopt other forms of profile, structure to realize through above technical scheme and technological general knowledge.Above-mentioned disclosed embodiment just illustrates, and is not unique.Therefore, all are not breaking away from its spirit or are being equal to the right that any change of being done in the utility model scope is the utility model.
Claims (2)
1. electronic limit device that is used for door lifter; It comprises motor (1); Motor shaft (2) on the motor (1), the output shaft (3) that is connected with motor shaft (2); It is characterized in that: potentiometer (4) is connected with worm-wheel shaft (7) through potentiometer connecting axle (6), and a friction protective device (5) is installed between potentiometer (4) and power transmission shaft.
2. the electronic limit device that is used for door lifter according to claim 1 is characterized in that: go up thread bush of cover at worm-wheel shaft (7), potentiometer connecting axle (6) is gone up gear of installation and is meshed with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202027452U CN202596411U (en) | 2012-05-08 | 2012-05-08 | Electronic limit device for door openers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202027452U CN202596411U (en) | 2012-05-08 | 2012-05-08 | Electronic limit device for door openers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202596411U true CN202596411U (en) | 2012-12-12 |
Family
ID=47313958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202027452U Expired - Lifetime CN202596411U (en) | 2012-05-08 | 2012-05-08 | Electronic limit device for door openers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202596411U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015042764A1 (en) * | 2013-09-28 | 2015-04-02 | 亿腾科技（无锡）有限公司 | Electric potential follower type limiting structure for rolling-door motor |
| WO2019080391A1 (en) * | 2017-10-27 | 2019-05-02 | 邵文英 | Electronic gate machine structure |
-
2012
- 2012-05-08 CN CN2012202027452U patent/CN202596411U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015042764A1 (en) * | 2013-09-28 | 2015-04-02 | 亿腾科技（无锡）有限公司 | Electric potential follower type limiting structure for rolling-door motor |
| WO2019080391A1 (en) * | 2017-10-27 | 2019-05-02 | 邵文英 | Electronic gate machine structure |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |