CN208954907U - A kind of relay contact automatic cleaning apparatus - Google Patents
A kind of relay contact automatic cleaning apparatus Download PDFInfo
- Publication number
- CN208954907U CN208954907U CN201821444605.XU CN201821444605U CN208954907U CN 208954907 U CN208954907 U CN 208954907U CN 201821444605 U CN201821444605 U CN 201821444605U CN 208954907 U CN208954907 U CN 208954907U
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- Prior art keywords
- relay
- contact
- electrically connected
- power supply
- resistance
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Abstract
The utility model discloses a kind of relay contact automatic cleaning apparatus, including control system of switching on or off electricity device and contact clean device, the coil pin of the control system of switching on or off electricity device and relay is electrically connected for providing power supply to relay and controlling the power off time of relay, the surface film resistance breakdown that the contact of the contact clean device and relay is electrically connected to form closed circuit, generate electric current will be attached on the contact of relay, it solves the problems, such as that the contact resistance of relay is bigger than normal, reduces fraction defective and scrappage.
Description
Technical field
The utility model relates to relay field, especially a kind of relay contact automatic cleaning apparatus.
Background technique
Relay product contact resistance is bad, is a critical defect for being most difficult to prevent.Contact resistance is mainly contact
Material resistance and contact surface film resistance.Material resistance is determined by material itself, has been fixed in selection, surface film resistance master
To contain organic matter, inorganic matter in some air for contact surface, will increase its resistance when contact contacts, be easy to cause production
Product can not work.
Utility model content
In order to solve the above technical problems, the purpose of the utility model is to provide a kind of relay contact automatic cleaning apparatus.
The technical solution adopted in the utility model is:
A kind of relay contact automatic cleaning apparatus, including control system of switching on or off electricity device and contact clean device are described logical
The coil pin of power-down control device and relay is electrically connected for providing power supply to relay and controlling the logical of relay
The contact of power-off time, the contact clean device and relay is electrically connected to form closed circuit, generate electric current with will be attached
On the contact of relay surface film resistance breakdown.
The control system of switching on or off electricity device includes DC power supply and the time relay, the time relay respectively with relay
The coil pin of device, DC power supply are electrically connected, and the time relay is for controlling power off time.
The contact clean device includes Switching Power Supply and load component, the positive terminal and relay of the Switching Power Supply
Common be electrically connected, load component respectively with the negative pole end of Switching Power Supply, the normally opened contact of relay, relay it is normal
Closed contact is electrically connected.
The load component is divided into the first load resistance, the second load resistance and selection switch, the selection switch
Public port and the negative pole end of Switching Power Supply be electrically connected, first port and the first load resistance are electrically connected, second port with
Second load resistance be electrically connected, the first load resistance, the second load resistance all with the normally opened contact of relay, relay it is normal
Closed contact is electrically connected.
The resistance value of first load resistance is 6 ohm, and the resistance value of the second load resistance is 12 ohm.
The utility model has the beneficial effects that
The utility model provides power supply to relay by control system of switching on or off electricity device and controls the power off time of relay,
The contact of contact clean device and relay is electrically connected to form closed circuit, generate electric current will be attached to the touching of relay
Surface film resistance breakdown on point, solves the problems, such as that the contact resistance of relay is bigger than normal, reduces fraction defective and scrappage.
Detailed description of the invention
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.
Fig. 1 is the principles of the present invention block diagram.
Specific embodiment
As shown in Figure 1, a kind of relay contact automatic cleaning apparatus, including control system of switching on or off electricity device 1 and contact clean
The coil pin 11 of device 2, the control system of switching on or off electricity device 1 and relay 3 is electrically connected for providing power supply to relay 3
And the power off time of relay 3 is controlled, the contact of the contact clean device 2 and relay 3 is electrically connected to form closure
Circuit, the surface film resistance generated on contact of the electric current will be attached to relay 3 puncture, and solve the contact electricity of relay 3
Problem bigger than normal is hindered, fraction defective and scrappage are reduced.
The control system of switching on or off electricity device 1 includes DC power supply 11 and the time relay 12, and the time relay 12 divides
It is not electrically connected with the coil pin 31 of relay 3, DC power supply 11, the time relay 12 is for when controlling power on/off
Between.
The contact clean device 2 includes Switching Power Supply 21 and load component 22, the positive terminal of the Switching Power Supply 21
Be electrically connected with the common 32 of relay 3, load component 22 respectively with the negative pole end of Switching Power Supply 21, relay 3 it is normal
Open contact 33, the normally-closed contact 34 of relay 3 is electrically connected.
3 on-off of relay is that armature is inhaled, powers off bullet again by magnetic field produced by being powered by the coil pin 31 of relay 3
It goes back to reset, dynamic point of relay 3 connected with the common 32 with motor type relay 3 or so activity.Relay 3 when power-off
Dynamic point contacted with normally-closed contact 34, normally-closed contact 34, common 32, load component 22 and Switching Power Supply 21 are formed into a loop
And the skin covering of the surface for generating electric current will be attached on the normally-closed contact 34 of relay 3, common 32 and the dynamic point of relay 3
Breakdown, makes surface film resistance become smaller；The dynamic point of relay 3 is contacted with normally opened contact 33 when energization, normally opened contact 33, public touching
Point, load component 22 and Switching Power Supply 21 are formed into a loop and generate electric current will be attached to normally opened contact 33, the public affairs of relay 3
Skin covering of the surface breakdown on the dynamic point of contact 32 and relay 3 altogether, makes surface film resistance become smaller, 3 power off time of relay by
The time relay 12 controls.
The load component 22 divides for the first load resistance 221, the second load resistance 222 and selects switch 223, described
The negative pole end of the public port 2231 and Switching Power Supply 21 that select switch 223 is electrically connected, first port 2232 and first loads
Resistance 221 is electrically connected, second port 2233 and the second load resistance 222 are electrically connected, and the first load resistance 221, second is negative
It carries resistance 222 to be all electrically connected with the normally-closed contact 34 of the normally opened contact 33 of relay 3, relay 3, the first load resistance 221
It is differed with the resistance value of the second load, the size of current of generation is different, therefore clean effect is also different, and when use can basis
The degree of fouling of contact is by selecting switch 223 to be selected, it is preferable that the resistance value of first load resistance 221 is 6 Europe
Nurse, the resistance value of the second load resistance 222 are 12 ohm.
The foregoing is merely the preferred embodiments of the utility model, the utility model is not limited to above-mentioned embodiment party
Formula, if with essentially identical means realize the utility model aim technical solution belong to the protection scope of the utility model it
It is interior.
Claims (5)
1. a kind of relay contact automatic cleaning apparatus, it is characterised in that: filled including control system of switching on or off electricity device and contact clean
Set, the coil pin of the control system of switching on or off electricity device and relay be electrically connected with for relay provide power supply and control after
The contact of the power off time of electric appliance, the contact clean device and relay is electrically connected to form closed circuit, generate electricity
Surface film resistance breakdown of the stream will be attached on the contact of relay.
2. a kind of relay contact automatic cleaning apparatus according to claim 1, it is characterised in that: the control system of switching on or off electricity
Device includes DC power supply and the time relay, the time relay respectively with the coil pin of relay, DC power supply
It is electrically connected, the time relay is for controlling power off time.
3. a kind of relay contact automatic cleaning apparatus according to claim 1, it is characterised in that: the contact clean dress
It sets including Switching Power Supply and load component, the positive terminal of the Switching Power Supply and the common of relay are electrically connected, bear
Component is carried to be electrically connected with the normally-closed contact of the negative pole end of Switching Power Supply, the normally opened contact of relay, relay respectively.
4. a kind of relay contact automatic cleaning apparatus according to claim 3, it is characterised in that: the load component point
For the first load resistance, the second load resistance and selection switch, the public port of the selection switch and bearing for Switching Power Supply
Extreme electric connection, first port and the first load resistance are electrically connected, second port and the second load resistance are electrically connected, the
One load resistance, the second load resistance are all electrically connected with the normally-closed contact of the normally opened contact of relay, relay.
5. a kind of relay contact automatic cleaning apparatus according to claim 4, it is characterised in that: the first load electricity
The resistance value of resistance is 6 ohm, and the resistance value of the second load resistance is 12 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821444605.XU CN208954907U (en) | 2018-09-04 | 2018-09-04 | A kind of relay contact automatic cleaning apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821444605.XU CN208954907U (en) | 2018-09-04 | 2018-09-04 | A kind of relay contact automatic cleaning apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208954907U true CN208954907U (en) | 2019-06-07 |
Family
ID=66736915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821444605.XU Active CN208954907U (en) | 2018-09-04 | 2018-09-04 | A kind of relay contact automatic cleaning apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208954907U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112853454A (en) * | 2020-12-31 | 2021-05-28 | 成都中车四方轨道车辆有限公司 | Electric cleaning and repairing device and method for urban rail vehicle relay |
-
2018
- 2018-09-04 CN CN201821444605.XU patent/CN208954907U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112853454A (en) * | 2020-12-31 | 2021-05-28 | 成都中车四方轨道车辆有限公司 | Electric cleaning and repairing device and method for urban rail vehicle relay |
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