CN103730267A - Valve limit switch - Google Patents
Valve limit switch Download PDFInfo
- Publication number
- CN103730267A CN103730267A CN201310653134.9A CN201310653134A CN103730267A CN 103730267 A CN103730267 A CN 103730267A CN 201310653134 A CN201310653134 A CN 201310653134A CN 103730267 A CN103730267 A CN 103730267A
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- Prior art keywords
- movable axis
- normally
- limit switch
- valve limit
- contacts
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- Push-Button Switches (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a valve limit switch which comprises a shell, wherein a movable shaft is arranged in the shell in a sliding mode, a plastic connection piece is arranged on the sliding shaft in a sliding mode, metal contacts are arranged on the front face and the back face of the plastic connection piece, normally-closed contacts matched with the metal contacts are arranged on the plastic connection piece, normally-open contacts matched with the metal contacts are arranged under the plastic connection piece, electromagnets are arranged in the normally-open contacts, reset elastic pieces are arranged on the movable shaft in a sleeved mode, the electromagnets are energized and then generate magnetism to attract the metal contacts, and therefore the metal contacts are matched with the normally-open contacts; the switch is turned on, when power failure happens to the electromagnets, under the action of the reset spring, reset metal contacts of the connection piece are matched with the normally-closed contacts, and the switch is turned off.
Description
Technical field
The present invention relates to a kind of limit switch, this switch is specifically applied in 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
Mostly existing a lot of travel switch is to adopt press-down type, and kind is many, technology maturation, be widely used.But in producing, living, often can run into travel switch anticaustic, by press-down type, convert pull-down to, all travel switch will be added to some conversion equipments, can realize pulldown function.
Summary of the invention
The object of the invention is to overcome the defect existing in prior art, a kind of valve limit switch is provided, by electromagnet and coordinating of hard contact realizing opening of switch.
For achieving the above object, technical scheme of the present invention has been to provide a kind of valve limit switch, it is characterized in that: comprise housing, in described housing, slide and be provided with movable axis, on described movable axis, slide and be provided with plastics brace, the tow sides of described plastics brace are provided with hard contact, the top of described plastics brace is provided with the normally-closed contact matching with described hard contact, its below is provided with the normally opened contact matching with described hard contact, in described normally opened contact, be provided with electromagnet, on described movable axis, be arranged with return springs.
As preferably, on described movable axis and described plastics brace, be provided with stage clip.
As preferably, described normally-closed contact is two, and two normally-closed contacts lay respectively at movable axis arranged on left and right sides, and normally opened contact is two, and two normally opened contacts lay respectively at movable axis arranged on left and right sides.
As preferably, in the inner walls of described movable axis top, be fixed with a column, on this column, there is a centre bore, stretch in centre bore to movable axis top movable.
As preferably, described movable axis stretches out on the lower end of housing and has drop-down hanging hole.
As preferably, on described movable axis, be fixedly installed guide vane end stop, between the plastics brace described in described return springs is arranged at and described guide vane end stop.
Advantage of the present invention and beneficial effect are: after electromagnet energising, produce magnetic and be used for attracting hard contact, hard contact is matched with normally opened contact, switch opens, when after electromagnet power-off, under the effect of return springs, brace reset hard contact coordinates with normally-closed contact, and switch cuts out.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
In figure: 1, centre bore; 2, stage clip; 3, movable axis; 4, screw hole; 5, drop-down hanging hole; 6, guide vane end stop; 7, return springs; 8, normally opened contact; 9, plastics brace; 10, normally-closed contact; 11, housing; 12, hard contact.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described.Following examples are only for technical scheme of the present invention is more clearly described, and can not limit the scope of the invention with this.
As shown in Figure 1, a kind of valve limit switch, comprise housing 11, on housing 11, be provided with the fixing screw hole 4 of using for connecting, the described interior slip of housing 11 is provided with movable axis 3, on described movable axis 3, slide and be provided with plastics brace 9, the tow sides of described plastics brace 9 are provided with hard contact 12, the top of described plastics brace 9 is provided with the normally-closed contact 10 matching with described hard contact 12, its below is provided with the normally opened contact 8 matching with described hard contact 12, in described normally opened contact 8, be provided with electromagnet, on described movable axis 3, be arranged with return springs 7, on described movable axis 3, be fixedly installed guide vane end stop 6, between plastics brace 9 described in described return springs 7 is arranged at and described guide vane end stop 6.
As shown in Figure 1, on described movable axis 3 and described plastics brace 9, be provided with stage clip 2.
As shown in Figure 1, described normally-closed contact 10 is two, and two normally-closed contacts 10 lay respectively at movable axis 3 arranged on left and right sides, and normally opened contact 8 is two, and two normally opened contacts 8 lay respectively at movable axis 3 arranged on left and right sides.
As shown in Figure 1, on housing 11 inwalls of described movable axis 3 tops, be fixed with a column, on this column, have a centre bore 1, stretch in centre bore 1 to movable axis 3 top movable.
As shown in Figure 1, described movable axis 3 stretches out on the lower end of housing 11 and has drop-down hanging hole 5.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a valve limit switch, it is characterized in that: comprise housing, in described housing, slide and be provided with movable axis, on described movable axis, slide and be provided with plastics brace, the tow sides of described plastics brace are provided with hard contact, the top of described plastics brace is provided with the normally-closed contact matching with described hard contact, its below is provided with the normally opened contact matching with described hard contact, in described normally opened contact, be provided with electromagnet, on described movable axis, be arranged with return springs.
2. valve limit switch as claimed in claim 1, is characterized in that: on described movable axis and described plastics brace, be provided with stage clip.
3. valve limit switch as claimed in claim 2, is characterized in that: described normally-closed contact is two, and two normally-closed contacts lay respectively at movable axis arranged on left and right sides, and normally opened contact is two, and two normally opened contacts lay respectively at movable axis arranged on left and right sides.
4. valve limit switch as claimed in claim 3, is characterized in that: in the inner walls of described movable axis top, be fixed with a column, have a centre bore on this column, stretch in centre bore to movable axis top movable.
5. valve limit switch as claimed in claim 4, is characterized in that: described movable axis stretches out on the lower end of housing and has drop-down hanging hole.
6. valve limit switch as claimed in claim 5, is characterized in that: on described movable axis, be fixedly installed guide vane end stop, between the plastics brace described in described return springs is arranged at and described guide vane end stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653134.9A CN103730267B (en) | 2013-12-05 | 2013-12-05 | Valve limit switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653134.9A CN103730267B (en) | 2013-12-05 | 2013-12-05 | Valve limit switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103730267A true CN103730267A (en) | 2014-04-16 |
| CN103730267B CN103730267B (en) | 2015-12-09 |
Family
ID=50454298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310653134.9A Active CN103730267B (en) | 2013-12-05 | 2013-12-05 | Valve limit switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103730267B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105022407A (en) * | 2015-08-07 | 2015-11-04 | 邸达 | Angular travel limit switch |
| CN105329731A (en) * | 2015-11-02 | 2016-02-17 | 中山市鑫海精密制造科技有限公司 | Extension ladder guardrail |
| CN106059607A (en) * | 2016-07-22 | 2016-10-26 | 深圳市华讯星通讯有限公司 | Antenna transceiver and communication system with the antenna transceiver |
| CN110459416A (en) * | 2019-08-16 | 2019-11-15 | 南通勇振机电有限公司 | A kind of elevator easily adjusting limit switch |
| CN113205970A (en) * | 2021-03-18 | 2021-08-03 | 茂物久泽(南京)智能科技有限公司 | Remote control's safe switch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2130287Y (en) * | 1992-07-20 | 1993-04-21 | 马金盛 | Automatic protector for electric appliance |
| JP2001273836A (en) * | 2000-03-28 | 2001-10-05 | Matsushita Electric Works Ltd | Door switch |
| CN201302934Y (en) * | 2008-11-03 | 2009-09-02 | 无锡市蓝虹电子有限公司 | Initiative snap-type appliance switch |
| CN102235537A (en) * | 2010-04-08 | 2011-11-09 | 株式会社永泰 | Torque motor device for valve positioner |
| CN203277112U (en) * | 2013-04-18 | 2013-11-06 | 叶天云 | Conductive travel switch |
-
2013
- 2013-12-05 CN CN201310653134.9A patent/CN103730267B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2130287Y (en) * | 1992-07-20 | 1993-04-21 | 马金盛 | Automatic protector for electric appliance |
| JP2001273836A (en) * | 2000-03-28 | 2001-10-05 | Matsushita Electric Works Ltd | Door switch |
| CN201302934Y (en) * | 2008-11-03 | 2009-09-02 | 无锡市蓝虹电子有限公司 | Initiative snap-type appliance switch |
| CN102235537A (en) * | 2010-04-08 | 2011-11-09 | 株式会社永泰 | Torque motor device for valve positioner |
| CN203277112U (en) * | 2013-04-18 | 2013-11-06 | 叶天云 | Conductive travel switch |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105022407A (en) * | 2015-08-07 | 2015-11-04 | 邸达 | Angular travel limit switch |
| CN105022407B (en) * | 2015-08-07 | 2018-02-13 | 邸达 | A kind of angle lead limit switch |
| CN105329731A (en) * | 2015-11-02 | 2016-02-17 | 中山市鑫海精密制造科技有限公司 | Extension ladder guardrail |
| CN105329731B (en) * | 2015-11-02 | 2018-03-13 | 中山市鑫海精密制造科技有限公司 | Extension ladder guardrail |
| CN106059607A (en) * | 2016-07-22 | 2016-10-26 | 深圳市华讯星通讯有限公司 | Antenna transceiver and communication system with the antenna transceiver |
| CN106059607B (en) * | 2016-07-22 | 2018-06-15 | 深圳市华讯星通讯有限公司 | Antenna transceiver and with its communication system |
| CN110459416A (en) * | 2019-08-16 | 2019-11-15 | 南通勇振机电有限公司 | A kind of elevator easily adjusting limit switch |
| CN113205970A (en) * | 2021-03-18 | 2021-08-03 | 茂物久泽(南京)智能科技有限公司 | Remote control's safe switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103730267B (en) | 2015-12-09 |
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