CN103730267B - Valve limit switch - Google Patents
Valve limit switch Download PDFInfo
- Publication number
- CN103730267B CN103730267B CN201310653134.9A CN201310653134A CN103730267B CN 103730267 B CN103730267 B CN 103730267B CN 201310653134 A CN201310653134 A CN 201310653134A CN 103730267 B CN103730267 B CN 103730267B
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- Prior art keywords
- movable axis
- contact
- normally
- normally opened
- hard contact
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- Arc-Extinguishing Devices That Are Switches (AREA)
- Push-Button Switches (AREA)
Abstract
The invention discloses a kind of valve limit switch, comprise housing, slide in housing and be provided with movable axis, movable axis slides and is provided with plastics brace, the tow sides of plastics brace are provided with hard contact, the top of plastics brace is provided with the normally-closed contact matched with hard contact, the normally opened contact matched with hard contact is provided with below it, electromagnet is provided with in normally opened contact, movable axis is arranged with return springs, magnetic is produced for attracting hard contact after electromagnet energising, 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, switch cuts out.
Description
Technical field
The present invention relates to a kind of limit switch, this switch is particularly applicable in the plant equipment such as hauling machine, kiln car pusher or ferry bus, cuts off the electricity supply when running to assigned address.
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 production, life, often can run into travel switch anticaustic, be converted to pull-down by press-down type, all travel switch will be added some conversion equipments, can pulldown function be realized.
Summary of the invention
The object of the invention is to overcome the defect existed in prior art, a kind of valve limit switch is provided, realize opening of switch by electromagnet with coordinating of hard contact.
For achieving the above object, technical scheme of the present invention there is provided a kind of valve limit switch, it is characterized in that: comprise housing, slide in described housing and be provided with movable axis, described movable axis slides and is 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 matched with described hard contact, the normally opened contact matched with described hard contact is provided with below it, electromagnet is provided with in described normally opened contact, described movable axis is arranged with return springs.
As preferably, described movable axis and described plastics brace are 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, the inner walls above described movable axis is fixed with a column, this column has a centre bore, stretch in centre bore to movable axis top movable.
As preferably, the lower end that described movable axis stretches out housing has drop-down hanging hole.
As preferably, described movable axis is fixedly installed guide vane end stop, described return springs is arranged between described plastics brace and described guide vane end stop.
Advantage of the present invention and beneficial effect are: produce magnetic after electromagnet energising 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 only for technical scheme of the present invention is 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, housing 11 is provided with and fixes with screw hole 4 for connecting, slide in described housing 11 and be provided with movable axis 3, described movable axis 3 slides and is 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 matched with described hard contact 12, the normally opened contact 8 matched with described hard contact 12 is provided with below it, electromagnet is provided with in described normally opened contact 8, described movable axis 3 is arranged with return springs 7, described movable axis 3 is fixedly installed guide vane end stop 6, described return springs 7 is arranged between described plastics brace 9 and described guide vane end stop 6.
As shown in Figure 1, described movable axis 3 and described plastics brace 9 are 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, housing 11 inwall above described movable axis 3 is fixed with a column, this column has a centre bore 1, stretch in centre bore 1 to movable axis 3 top movable.
As shown in Figure 1, the lower end that described movable axis 3 stretches out housing 11 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, under the prerequisite not departing from 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 (1)
1. a valve limit switch, it is characterized in that: comprise housing, slide in described housing and be provided with movable axis, described movable axis slides and is 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 matched with described hard contact, the normally opened contact matched with described hard contact is provided with below it, be provided with electromagnet in described normally opened contact, described movable axis is arranged with return springs;
Described movable axis and described plastics brace are provided with stage clip;
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;
Inner walls above described movable axis is fixed with a column, this column has a centre bore, stretch in centre bore to movable axis top movable;
The lower end that described movable axis stretches out housing has drop-down hanging hole;
Described movable axis is fixedly installed guide vane end stop, and described return springs is arranged between described plastics brace 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 CN103730267A (en) | 2014-04-16 |
| CN103730267B true 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) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105022407B (en) * | 2015-08-07 | 2018-02-13 | 邸达 | A kind of angle lead limit switch |
| 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 |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2130287Y (en) * | 1992-07-20 | 1993-04-21 | 马金盛 | Automatic protector for electric appliance |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001273836A (en) * | 2000-03-28 | 2001-10-05 | Matsushita Electric Works Ltd | Door switch |
-
2013
- 2013-12-05 CN CN201310653134.9A patent/CN103730267B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2130287Y (en) * | 1992-07-20 | 1993-04-21 | 马金盛 | Automatic protector for electric appliance |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103730267A (en) | 2014-04-16 |
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