CN202601440U - Magnetic control limit switch - Google Patents
Magnetic control limit switch Download PDFInfo
- Publication number
- CN202601440U CN202601440U CN 201220199341 CN201220199341U CN202601440U CN 202601440 U CN202601440 U CN 202601440U CN 201220199341 CN201220199341 CN 201220199341 CN 201220199341 U CN201220199341 U CN 201220199341U CN 202601440 U CN202601440 U CN 202601440U
- Authority
- CN
- China
- Prior art keywords
- magnet
- limit switch
- magnetic control
- control limit
- tongue tube
- 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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- Push-Button Switches (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
The utility model discloses a magnetic control limit switch, being characterized in that reed switches and a first magnet are arranged in a non-magnetic shell; the first magnet makes the reed switches in a closed state; the reed switches are connected in a limit circuit in series; a second magnet is arranged on a mobile device; and the polarity of the second magnet is opposite to the polarity of the first magnet. The magnetic control limit switch has no requirement for directly crashing the device during operation with a relative distance of 15mm, thus being able to replace a mechanical travel switch; and the magnetic control limit switch has the advantages of being convenient to install, being reliable in work, being low in cost, being high in sensitivity, and having good protection capacity.
Description
Technical field
The utility model relates to a kind of limit switch, and this switch specifically is applied on the plant equipment such as hauling machine, kiln car pusher or ferry bus, when running to assigned address, cuts off the electricity supply.
Background technology
At present mostly limit switch adopts the mechanical type limit switch to control, and conveyer tool equipment and limit switch collide each other that to cut off control electric former and stop during work, and the shortcoming of this limit switch is: equipment is in operation and contacts with limit switch; The switch spoilage is high; It is unreliable to work, and misoperation sometimes causes and can not stop; Sometimes damage plant equipment, even cause personal safety.
Summary of the invention
The utility model is not enough to above-mentioned prior art, designs a kind of contactless limit switch, promptly magnet controlled limit switch, and this switch has simple in structure, does not need collision, long service life, characteristics such as do not need repairing.
The technical scheme that the utility model is taked is: it is that the tongue tube and first magnet are installed in a non magnetic housing; First magnet makes tongue tube be in closure state; Tongue tube is serially connected in the limit circuit; Second magnet is installed on mobile device, and second magnet is opposite with the first magnet polarity.
Magnet controlled limit switch of the utility model and existing machinery formula limit switch are compared, and have following outstanding beneficial effect.
1, equipment is simple, rationally.
This switch not need with operating equipment direct collision, between the relative distance 15mm.Can replace the mechanical stroke switch.
3. easy for installation, reliable operation, cost is low, and is highly sensitive, and protective value is good.
Description of drawings
Fig. 1 is the structural representation of the magnet controlled limit switch of the utility model.
Among the figure: the 1-tongue tube; 2-first magnet; 3-second magnet; The non magnetic housing of 4-.
Embodiment
Specify below with reference to Fig. 1 the magnet controlled limit switch of the utility model being done below.
As shown in Figure 1; The magnet controlled limit switch of the utility model is that the tongue tube 1 and first magnet 2 are installed in non magnetic housing 4; First magnet 2 makes tongue tube 1 be in closure state; Tongue tube 1 is serially connected in the limit circuit, and it is opposite with first magnet, 2 polarity that second magnet, 3, the second magnet 3 are installed on mobile device.
Under technological normal condition; Tongue tube 1 is under the effect of first magnet 2, and its normally opened contact is in closure state, the two-terminal conducting; The control power supply of equipment A.C. contactors such as connection hauling machine; Be serially connected in tongue tube 1 contact lead-out wire in the control loop of hauling machine contactor, get up first magnet 2, tongue tube 1 and with non magnetic housing 4 encapsulation at last, be fixed on the position that equipment such as hauling machine need be shut down; Second magnet 3 is fixed on the plant equipment of operation, and when plant equipment ran to parking spot, first magnet 2 and second magnet 3 were in relative position; Distance is about 15mm; Because first magnet 2 is opposite with second magnet, 3 magnetic, thereby carry out branch magnetic for first magnet 2, weakened the magnetic force of first magnet 2; The closed contact of tongue tube 1 because of reducing, is broken off magnetic force; Cut off the control power supply of contactor, the A.C. contactor of equipment such as hauling machine is discharged because of outage, play the effect of spacing shutdown.First magnet 2 and second magnet 3 leave during the equipment reverse direction operation, connect the control loop power supply automatically, for the operation of next time performs equipment.
Claims (1)
1. magnet controlled limit switch; It is characterized in that; It is that the tongue tube and first magnet are installed in a non magnetic housing, and first magnet makes tongue tube be in closure state, and tongue tube is serially connected in the limit circuit; Second magnet is installed on mobile device, and second magnet is opposite with the first magnet polarity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220199341 CN202601440U (en) | 2012-05-05 | 2012-05-05 | Magnetic control limit switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220199341 CN202601440U (en) | 2012-05-05 | 2012-05-05 | Magnetic control limit switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202601440U true CN202601440U (en) | 2012-12-12 |
Family
ID=47318970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220199341 Expired - Fee Related CN202601440U (en) | 2012-05-05 | 2012-05-05 | Magnetic control limit switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202601440U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730292A (en) * | 2013-12-05 | 2014-04-16 | 常熟市中凯仪表有限公司 | Magnetic control type limit switch |
| US9947491B1 (en) | 2016-10-18 | 2018-04-17 | Microsoft Technology Licensing, Llc | Magnetic sensor alignment with breakaway |
| CN111584275A (en) * | 2020-06-16 | 2020-08-25 | 佛山市川东磁电股份有限公司 | Manufacturing method of magnetic control switch capable of adjusting AT value |
-
2012
- 2012-05-05 CN CN 201220199341 patent/CN202601440U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730292A (en) * | 2013-12-05 | 2014-04-16 | 常熟市中凯仪表有限公司 | Magnetic control type limit switch |
| US9947491B1 (en) | 2016-10-18 | 2018-04-17 | Microsoft Technology Licensing, Llc | Magnetic sensor alignment with breakaway |
| CN111584275A (en) * | 2020-06-16 | 2020-08-25 | 佛山市川东磁电股份有限公司 | Manufacturing method of magnetic control switch capable of adjusting AT value |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20150505 |
|
| EXPY | Termination of patent right or utility model |