CN202487476U - Double-throw knife switch power supply change-over switch - Google Patents
Double-throw knife switch power supply change-over switch Download PDFInfo
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- CN202487476U CN202487476U CN2012200478857U CN201220047885U CN202487476U CN 202487476 U CN202487476 U CN 202487476U CN 2012200478857 U CN2012200478857 U CN 2012200478857U CN 201220047885 U CN201220047885 U CN 201220047885U CN 202487476 U CN202487476 U CN 202487476U
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- power supply
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- contact piece
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Abstract
The utility model discloses a double-throw knife switch power supply change-over switch which comprises a knife blade, a handle, a main power supply contact piece, a standby power supply contact piece, an auxiliary knife blade, an auxiliary contact piece and an alarmer. The main power supply contact piece and the standby power supply contact piece are located on two sides of the knife blade respectively, and the auxiliary knife blade is linked with the knife blade in a parallel mode and electrically connected with the main power supply contact piece; the auxiliary contact piece corresponds to the auxiliary knife blade and is located on one side of the standby power supply contact piece; and the alarmer is provided with at least one input end and at least one output end, and the input end is connected with the auxiliary knife blade and grounded. During using of the double-throw knife switch power supply change-over switch, when a standby power supply is used for supplying power, the auxiliary knife blade is connected with the auxiliary contact piece, and the alarmer is connected with a main power supply; when the main power supply starts to supply the power, the alarmer can give an alarm to prompt operators to change over a power supply line back to the main power supply; and the double-throw knife switch power supply change-over switch is applicable to communication machine rooms of frequent power failures in rural areas and the like.
Description
Technical field
The utility model belongs to appliance switch, relates in particular to a kind of power change-over switch, specifically is a kind of double-throw plug-in strip power change-over switch.
Background technology
Some important electric equipments require uninterrupted power supplies, thus except civil power as the main power source, also need reserve battery or subsequent use stand-by power supplies such as generator, work under the situation of municipal power failure, can switch to stand-by power supply.For example in communications equipment room, just have civil power line attachment and generator line attachment, under the situation that the rural area civil power often cuts off the power supply, communication the attendant can only be transported to generator in the machine room, uses generator to generate electricity as the equipment in the machine room.
Communications equipment room adopts the double-throw knife switch to switch line and extension wire; This switch is as common low voltage equipment, but generally has the blade of one to three turn, and the top of blade is fixedly connected with hand-holdable handle; Be provided with main power source contact and stand-by power supply contact in the both sides of blade; Be respectively applied for connection civil power and generator, blade is connected to the load in the communications equipment room, at this moment; Contact main power source contact or stand-by power supply contact respectively through the turn blade, switch between civil power and the generator again.But when switching to generator, the communication attendant after the civil power of being everlasting has begun to supply several hours, still to utilize generator to supply power for machine room owing to can't learn whether supply again of civil power, causes unnecessary waste.
Summary of the invention
The technical problem that the utility model will solve provides a kind of double-throw plug-in strip power change-over switch, when utilizing stand-by power supply to replace mains-supplied, can observe civil power and whether begin supply, avoids the waste that still causes with stand-by power supply this moment.The utlity model has simple in structurely, cost is low, the characteristics that are easy to promote.
For solving the problems of the technologies described above, the technical scheme that the utility model is taked is:
A kind of double-throw plug-in strip power change-over switch comprises blade, handle, lays respectively at the main power source contact and the stand-by power supply contact of blade both sides, and it also comprises auxiliary blade, auxiliary contact and alarm.Said auxiliary blade links side by side with blade and is electrically connected with the main power source contact; The corresponding setting of said auxiliary contact with auxiliary blade, and be positioned at stand-by power supply contact one side; Said alarm has at least one input and at least one output, and this input is connected with auxiliary blade, this input end grounding.
As the qualification to the utility model, said alarm is bulb or motor-operated horn.
Owing to adopted above-mentioned technical scheme, the utility model compared with prior art, the technological progress that is obtained is: the double-throw plug-in strip power change-over switch that the utility model provided; When adopting the stand-by power supply power supply; Auxiliary blade and auxiliary contact are connected, and the alarm quilt is communicated with main power source, if main power source begins power supply; Alarm can give the alarm, and alert is with supply line's switchback main power source again.
The utility model is applicable to that rural area etc. has a power failure in the frequent communications equipment room, as power change-over switch.
The utility model below will combine Figure of description and specific embodiment to do further explain.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Among the figure: the 1-handle, the 2-blade, 3-main power source contact, 4-stand-by power supply contact, the 5-auxiliary blade, 6-assists contact, 7-alarm, 8-circuit connection, 9-load.
Embodiment
Embodiment
Shown in Figure 1 is a kind of double-throw plug-in strip power change-over switch, is included in the middle part and can be provided with main power source contact 3 and stand-by power supply contact 4 in the both sides of blade 2 around a pin joint rotation of blade 2.Blade 2 is connected in the load 9 through circuit connection 8; Main power source contact 3 is electrically connected with the city, and stand-by power supply contact 4 connects subsequent use generator, at this moment; Contact main power source contact 3 or stand-by power supply contact 4 respectively through rotating blade 2, can civil power or generator be connected in the load 9.
Be provided with and blade 2 identical auxiliary blade 5 on the next door of blade 2, the pivot center of this auxiliary blade 5 overlaps with the pivot center of blade 2, and its top is connected the interlock arranged side by side that has realized with blade 2 through the handle 1 of insulation with blade 2.The same side being positioned at respect to auxiliary blade 5 with stand-by power supply contact 4 is provided with and stand-by power supply contact 4 identical auxiliary contacts 6; With when stand-by power supply contact 4 contacts, auxiliary blade 5 can contact with auxiliary contact 6 simultaneously at hand-held handle 1 to rotating blade 2.Auxiliary blade 5 is connected with main power source contact 3; Auxiliary contact 6 is connected with an alarm 7, and alarm 7 is used to send the alarm signal that the people can aware, and has at least one input and at least one output; Auxiliary contact 6 is connected output head grounding with input point.
For the ease of reducing cost, can select for use bulb or motor-operated horn etc. as alarm 7, have cheap, caution obvious results characteristics.
Present embodiment is when work, and blade 2 contacts with main power source contact 3, and adopting civil power this moment is load 9 power supplies.During mains failure, blade 2 rotated to stand-by power supply contact 4 contact, adopting generator this moment is load 9 power supplies.If civil power has been supplied power again after a period of time; Civil power can pass through the loop that auxiliary blade 5 and alarm 7 form so, and this moment, alarm 7 was luminous or sound, and reminded the staff in time to learn mains-supplied; Thereby close generator, load 9 is connected to civil power again.
Present embodiment has only adopted a blade 2; Be applicable to that original employing single-pole double-throw switch (SPDT) carries out the occasion that single phase poaer supply switches, but can know that the quantity that only needs to increase blade 2 promptly may be used on double-point double-throw switch or is used for the triac device of three-phase electricity according to this area general knowledge; Simultaneously; Thereby it is to form circuit pathways in order to form potential difference with main power source contact 3 places that alarm 7 carries out ground connection, according to electricity general knowledge, can form circuit pathways as long as the output of alarm 7 is connected in any point that is different from main power source contact 3; Can think to be earth point here, alarm 7 has been realized ground connection.
Claims (3)
1. double-throw plug-in strip power change-over switch comprises blade, handle, lays respectively at the main power source contact and the stand-by power supply contact of blade both sides, and it is characterized in that: it also comprises auxiliary blade, auxiliary contact and alarm; Said auxiliary blade links side by side with blade and is electrically connected with the main power source contact; The corresponding setting of said auxiliary contact with auxiliary blade, and be positioned at stand-by power supply contact one side; Said alarm has at least one input and at least one output, and this input is connected with auxiliary blade, this input end grounding.
2. double-throw plug-in strip power change-over switch according to claim 1 is characterized in that: said alarm is a bulb.
3. double-throw plug-in strip power change-over switch according to claim 1 is characterized in that: said alarm is a motor-operated horn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200478857U CN202487476U (en) | 2012-02-15 | 2012-02-15 | Double-throw knife switch power supply change-over switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200478857U CN202487476U (en) | 2012-02-15 | 2012-02-15 | Double-throw knife switch power supply change-over switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202487476U true CN202487476U (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200478857U Expired - Lifetime CN202487476U (en) | 2012-02-15 | 2012-02-15 | Double-throw knife switch power supply change-over switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202487476U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261495A (en) * | 2015-10-21 | 2016-01-20 | 华巧波 | Wireless single-pole double-throw disconnecting switch |
| CN105490261A (en) * | 2016-02-05 | 2016-04-13 | 江世军 | Safety electricity utilization intelligent device |
| CN106229177A (en) * | 2016-08-20 | 2016-12-14 | 嘉兴市创辉电气工程有限公司 | A kind of double-throw knife-like switch of band brake lock |
| CN106451739A (en) * | 2016-08-20 | 2017-02-22 | 嘉兴市正辉电力设备有限公司 | Low-voltage switch cabinet |
-
2012
- 2012-02-15 CN CN2012200478857U patent/CN202487476U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261495A (en) * | 2015-10-21 | 2016-01-20 | 华巧波 | Wireless single-pole double-throw disconnecting switch |
| CN105490261A (en) * | 2016-02-05 | 2016-04-13 | 江世军 | Safety electricity utilization intelligent device |
| CN106229177A (en) * | 2016-08-20 | 2016-12-14 | 嘉兴市创辉电气工程有限公司 | A kind of double-throw knife-like switch of band brake lock |
| CN106451739A (en) * | 2016-08-20 | 2017-02-22 | 嘉兴市正辉电力设备有限公司 | Low-voltage switch cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: WINTAO COMMUNICATIONS CO., LTD. Free format text: FORMER NAME: HEBEI WINTAO TELECOMMUNICATION TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 050030 Hebei Province, Shijiazhuang city Yuhua District Donggang Road No. 299 Road, room C1-1-402 Jinlan Patentee after: Yuan Tao communications Limited by Share Ltd Address before: 050030 Hebei Province, Shijiazhuang city Yuhua District Donggang Road No. 299 Road, room C1-1-402 Jinlan Patentee before: Hebei Wintao Telecommunications Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |