CN201867922U - Fire alarm switch - Google Patents
Fire alarm switch Download PDFInfo
- Publication number
- CN201867922U CN201867922U CN201020604089XU CN201020604089U CN201867922U CN 201867922 U CN201867922 U CN 201867922U CN 201020604089X U CN201020604089X U CN 201020604089XU CN 201020604089 U CN201020604089 U CN 201020604089U CN 201867922 U CN201867922 U CN 201867922U
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- CN
- China
- Prior art keywords
- alarm switch
- fire alarm
- metal shell
- bimetallic strip
- moving plate
- 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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Abstract
The utility model discloses a fire alarm switch, which is characterized by comprising a metal shell (4). Double metal sheets (5) are arranged in the metal shell (4), movable contacts (6) are arranged at ends of the double metal sheets (5), and fixed contacts (7) are disposed at positions corresponding to the movable contacts (6) and embedded into a ceramic sleeve (8) of the metal shell (4). The fire alarm switch can act due to high temperature, can be added into an alarm circuit to be used as an alarm switch, and is extremely simple in structure, lower in cost and suitable for popularization.
Description
Technical field
The utility model relates to a kind of alarm switch, particularly a kind of switch that is used for fire alarm.
Background technology
Show according to interrelated data, 73317 of the breaking out of fires altogether to the June whole nation in 2010 1 (refer to statistics month, do not contain forest, grassland, army, mine under ground portion, down together), dead 656 people, injured 271 people, 79290.7 ten thousand yuan of direct property losss, compared with the same period of last year, four item of digital descend 2%, 5.5%, 14.8% and 16% respectively.In addition, take place criminally to set fire 577, dead 58 people, injured 18 people, 1976.2 ten thousand yuan of direct property losss.Therefore in flammability zone condition of a fire early warning system is installed, helps in time fighting a fire, reduce the life property loss.Existing a lot of condition of a fire early warning system is the serviceability temperature detector all, but owing to problems such as costs, under the national conditions background of China, promotes expensive source of early warning and have very big difficulty all the time.
The utility model content
The purpose of this utility model is: a kind of fire alarm switch is provided, and it can move from reason high temperature, can add warning circuit as alarm switch, and structure is extremely simple, and cost is relatively low, is suitable for promoting.
The purpose of this utility model can realize by following technical proposal: a kind of fire alarm switch, it is characterized in that: comprise metal shell, be provided with bimetallic strip in the metal shell, the end of bimetallic strip is provided with moving contact, be provided with static contact with the moving contact corresponding position, static contact is located in the ceramic jacket that embeds metal shell.
In the aforesaid fire alarm switch, described bimetallic strip comprises rotating plate and by moving plate, is provided with the V-arrangement band by moving plate.By moving plate towards static contact.
In the aforesaid fire alarm switch, the V-arrangement opening angle of described V-arrangement band is 90 °～135 °.
In the aforesaid fire alarm switch, the degree of depth of described V-arrangement band is by 1/10～1/5 of moving plate thickness.
In the aforesaid fire alarm switch, the line spacing of described V-arrangement band is 1～10 times of the degree of depth.
Compared with prior art, the utility model passes through to use the bimetallic strip of the V-arrangement band of being with special size as heat-sensitive element, make switch of the present utility model have higher sensitivity, and because mechanism of the present utility model is very simple, material uses less, and accuracy requirement is lower, so cost is relatively low, be suitable for promoting, can effectively reduce the lives and properties infringement of fire people.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model bimetallic strip.
Being labeled as in the accompanying drawing: 1-rotating plate, 2-be by moving plate, 3-V shape band, 4-metal shell, 5-bimetallic strip, 6-moving contact, 7-static contact, 8-ceramic jacket.
Embodiment
A kind of fire alarm switch, structure comprises metal shell 4 as shown in Figure 1, is provided with bimetallic strip 5 in the metal shell 4, and the end of bimetallic strip 5 is provided with moving contact 6, be provided with static contact 7 with moving contact 6 corresponding positions, static contact 7 is located in the ceramic jacket 8 that embeds metal shell 4.The bimetallic strip structure comprises rotating plate 1 and as shown in Figure 2 by moving plate 2, describedly is provided with V-arrangement band 3 by moving plate 2.The V-arrangement opening angle of described V-arrangement band 3 (∠ β) is 90 °～135 °.The degree of depth c of described V-arrangement band 3 is by 1/10～1/5 of moving plate 2 thickness.The line spacing b of described V-arrangement band 3 is 1～10 times of degree of depth c.
During use, dynamic and static contact institute respective side is inserted respectively in the circuit that has audible-visual annunciator, or the input end of access signal collecting device is to provide a switching value, when running into high temperature of fire, since bimetallic strip chance heat to the characteristic of passive bending tablet, dynamic and static contact contact, turning circuit, sound and light alarm, or typing switching value signal is to provide alerting signal.
Claims (5)
1. fire alarm switch, it is characterized in that: comprise metal shell (4), be provided with bimetallic strip (5) in the metal shell (4), the end of bimetallic strip (5) is provided with moving contact (6), be provided with static contact (7) with moving contact (6) corresponding position, static contact (7) is located in the ceramic jacket (8) that embeds metal shell (4).
2. fire alarm switch according to claim 1 is characterized in that: described bimetallic strip (4) comprises rotating plate (1) and by moving plate (2), is provided with V-arrangement band (3) by moving plate (2).
3. fire alarm switch according to claim 2 is characterized in that: the V-arrangement opening angle of described V-arrangement band (3) is 90 °～135 °.
4. fire alarm switch according to claim 2 is characterized in that: the degree of depth of described V-arrangement band (3) is by 1/10～1/5 of moving plate (2) thickness.
5. according to the described fire alarm switch of the arbitrary claim of claim 2～4, it is characterized in that: the line spacing of described V-arrangement band (3) is 1～10 times of the degree of depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020604089XU CN201867922U (en) | 2010-11-12 | 2010-11-12 | Fire alarm switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020604089XU CN201867922U (en) | 2010-11-12 | 2010-11-12 | Fire alarm switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201867922U true CN201867922U (en) | 2011-06-15 |
Family
ID=44139072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020604089XU Expired - Fee Related CN201867922U (en) | 2010-11-12 | 2010-11-12 | Fire alarm switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201867922U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102467803A (en) * | 2010-11-12 | 2012-05-23 | 杜惠红 | Fire alarm switch |
| CN108470417A (en) * | 2018-04-02 | 2018-08-31 | 宁波尚阳智能科技有限责任公司 | A kind of multi-functional electric leakage, fire warning device and its method |
| CN110379117A (en) * | 2019-06-18 | 2019-10-25 | 杨浩然 | A kind of unmanned plane fire detection system based on infrared temperature imager |
| CN110379112A (en) * | 2019-06-18 | 2019-10-25 | 杨浩然 | A kind of forest fire alarm system based on contact switch |
-
2010
- 2010-11-12 CN CN201020604089XU patent/CN201867922U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102467803A (en) * | 2010-11-12 | 2012-05-23 | 杜惠红 | Fire alarm switch |
| CN108470417A (en) * | 2018-04-02 | 2018-08-31 | 宁波尚阳智能科技有限责任公司 | A kind of multi-functional electric leakage, fire warning device and its method |
| CN110379117A (en) * | 2019-06-18 | 2019-10-25 | 杨浩然 | A kind of unmanned plane fire detection system based on infrared temperature imager |
| CN110379112A (en) * | 2019-06-18 | 2019-10-25 | 杨浩然 | A kind of forest fire alarm system based on contact switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20111112 |