CN201904233U - Safety contact-type limit switch - Google Patents
Safety contact-type limit switch Download PDFInfo
- Publication number
- CN201904233U CN201904233U CN201020672167XU CN201020672167U CN201904233U CN 201904233 U CN201904233 U CN 201904233U CN 201020672167X U CN201020672167X U CN 201020672167XU CN 201020672167 U CN201020672167 U CN 201020672167U CN 201904233 U CN201904233 U CN 201904233U
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- rotating shaft
- housing
- limit switch
- connector
- type limit
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Abstract
The utility model relates to a safety contact-type limit switch. The limit switch comprises a shell, a fixed contact, an operation head, a rotating shaft, a movable contact, a spring seat and a spring, wherein the operation head, the rotating shaft and the movable contact are arranged at the upper part of the shell; the spring seat and the spring are mounted at the lower ends of both a shaft and the rotating shaft; and a connecting part and an oscillating device are mounted at the rotating shaft end on the outer side of the operation head at the upper part of the shell. The safety contact-type limit switch is characterized in that the connecting part consists of a connecting sheet and a shaft pin which are riveted into a whole, the oscillating device is a roller sleeved on the shaft pin of the connecting part, and the rotatable operation head is mounted on the shell. The safety contact-type limit switch has a safeguard role through cutting off electric apparatus forcedly, so as to reduce short circuit dangers caused by component failures, and ensure that an elevator can be safely and reliably powered out in emergency, further avoiding man-machine accidents; and the operation head capable of rotating by 4*90 degrees meets the requirement of multi-azimuth installation of novel intelligent combined elevators and is convenient to disassemble and adjust. The safety contact-type limit switch has the advantages of small size, smaller occupied area, light weight and lower manufacturing cost.
Description
Technical field
The utility model belongs to electrical apparatus-switching device, particularly relates to a kind of safety contact type limit switch.
Background technology
The limit switch of band idler-wheel connecting-rod is widely used in the elevator industry, the terminal point up and down (working limit point) of its control elevator stroke in elevator hoistways.The limit switch structure of known band idler-wheel connecting-rod is: the moving contact that one group of fixed contact is installed in the housing and rotates with rotating shaft, and hull outside rotating shaft end is equipped with connecting rod, and an end of connecting rod is equipped with rubber wheel, and the other end of connecting rod is equipped with back-moving spring.This conventional switch has only a kind of installation to trigger form, can not satisfy the requirement of the multiple installation compound mode of novel intelligent elevator.In addition, regulation among the GB7588 " elevator manufacturing and installation safety standard ", " action of safety contact should be disconnected it reliably by tripper, even two contact welds also should disconnect together.The design of safety contact should reduce the short circuit risk that causes owing to unit failure as far as possible." original switch do not meet new nation's standard code.Therefore be badly in need of a kind of novel limit switch that enlarges instructions for use of exploitation.
Summary of the invention
The utility model provides a kind of safety contact type limit switch safe and reliable for a long time, that for ease of maintenaince install with multiple orientation for solving the technical problem that exists in the known technology.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
A kind of safety contact type limit switch, comprise housing, be inlaid in the fixed contact in the housing, be arranged on the operating head and the rotating shaft on housing top and be installed in the axle in the housing and be sleeved on moving contact on the axle by axle sleeve, be installed in the axle and the spring base and the spring of rotating shaft lower end, described housing top operating head outside rotating shaft end is equipped with connector and pendulous device, it is characterized in that: described connector is to be riveted into one by brace and pivot pin, described pendulous device is a roller, described roller housing is contained on the pivot pin of connector, by screw rotatable operating head is installed on housing.
The utility model can also adopt following technical scheme:
The end that described rotating shaft is positioned at the housing head outside installs connector, rubber roll successively, and connector is sleeved on and is adjacent to packing ring on the rotating shaft boss and compresses by trip bolt.
The end that described rotating shaft is positioned at the housing head outside is coated with connector, steel roller successively, and connector is installed on to be shaped in the termination rotating shaft of convex striped and by trip bolt and clamps.
Advantage and the good effect that the utlity model has are:
After the utility model has adopted above technical scheme, promptly adopt direct-push compression spring, have the safety function that electrical equipment forces disconnection, reduce the short circuit risk that causes owing to unit failure in enclosure interior.Guarantee the in case of emergency safe and reliable outage of elevator, avoid man-machine accident.Simultaneously, increase by one group and often start fixed contact,, can intuitively show abort situation, reduce the working strength of investigation one by one for control loop provides the detection indicator light.The operating head that adopts screw to install can revolve 4 * 90 °, satisfies the requirement that combination form is installed in the multiple orientation of novel intelligent elevator, is convenient to the dismounting adjustment.This limit switch volume is little, has reduced taking up room; In light weight, reduced production cost, have more the advantage of striving unexpectedly.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the cut-away view of Fig. 2;
Fig. 5 is the structural representation of the utility model embodiment 2;
Fig. 6 is the left view of Fig. 5.
Among the figure: 1, pivot pin; 2, roller; 3, connector; 4, rotating shaft; 5, screw; 6, operating head; 7, liner; 8, housing; 9, cover plate; 10, trip bolt; 11, pad; 12, packing ring; 13, split washer; 14, spring base; 15, turriform spring; 16, push rod; 17, axle; 18, axle sleeve; 19, moving contact; 20, fixed contact.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
Embodiment 1:
See also Fig. 1 to Fig. 4, a kind of safety contact type limit switch comprises housing 8, by screw 5 operating head 6 and the rotating shaft 4 of stretching out outside the operating head is housed in housing head, and liner 7 is installed between operating head and the housing, and the housing installed in front has cover plate 9.Be embedded with fixed contact 20 in the described housing, in housing, be provided with axle 17 and pass through axle sleeve 18 suits moving contact 19 thereon, axle 17 is provided with spring base 14 and turriform spring 15 with rotating shaft 4 lower ends and constitutes the transmission mechanism of this limit switch, and an end of axle 17 inserts and is arranged in housing internal upper part push rod 16 afterbody centre bores.Described moving contact 19, the fixed contact 20 that is installed in the housing is that one group of normally closed moving contact, fixed contact and one group often start contact, fixed contact, also can be two groups of normally closed moving contacts, fixed contact.Housing head outside rotating shaft 4 ends install connector 3 successively, play the roller 2 and the pad 11 of trigger action, and connector is sleeved on and is adjacent to packing ring on the rotating shaft boss and compresses by trip bolt 10, and described connector is to be riveted into one by brace and pivot pin 1.In the present embodiment, described roller 2 is preferably rubber roll, and rubber roll is sleeved on the pivot pin 1 of connector, and fixes by packing ring 12, split washer 13.The operating head that adopts screw 5 to install can revolve 4 * 90 °, satisfies the multiple orientation of novel intelligent elevator the requirement of combination form is installed, but also be convenient to the dismounting adjustment.
See also Fig. 5 and Fig. 6, a kind of safety contact type limit switch comprises housing 8, by screw 5 operating head 6 and the rotating shaft 4 of stretching out outside the operating head is housed in housing head, and liner 7 is installed between operating head and the housing, and the housing installed in front has cover plate 9.Spring base 14 that axle 17 and rotating shaft 4 lower ends are provided with and turriform spring 15 constitute the transmission mechanism of these limit switches, and an end of axle 17 inserts and is arranged in housing internal upper part push rod 16 afterbody centre bores.Be embedded with fixed contact 20 in the described housing, in housing, be provided with axle 17 and pass through axle sleeve 18 suits moving contact 19 thereon, described moving contact, the fixed contact that is installed in the housing be one group normally closed and one group often start contact, fixed contact, also can be two groups of normally closed moving contacts, fixed contact.Housing head outside rotating shaft 4 ends install connector 3 successively, play the roller 2 of trigger action, and connector is installed on to be shaped in the termination rotating shaft of convex striped and by trip bolt 10 and clamps, and described connector 3 is to be riveted into one by brace and pivot pin 1.In the present embodiment, described roller is preferably the steel roller.The steel roller housing is contained in riveted and fixed on the pivot pin 1 of connector.The operating head that adopts screw 5 to install can revolve 4 * 90 °, satisfies the multiple orientation of novel intelligent elevator the requirement of combination form is installed, but also be convenient to the dismounting adjustment.
Operating principle of the present utility model is:
Roller is subjected to the external force effect clockwise or when rotating counterclockwise, and drives rotating shaft 4 and rotates and press down spring base 14 and turriform spring 15 to push rod 16 moves, and makes moving contact 19, fixed contact 20 finish conversion.After external force disappeared, turriform spring 15 release force jack-up spring bases 14 reached the automatically reset effect of switch.
Although in conjunction with the accompanying drawings preferred embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away under the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection range of the present utility model.
Claims (3)
1. safety contact type limit switch, comprise housing, be inlaid in the fixed contact in the housing, be arranged on the operating head and the rotating shaft on housing top and be installed in the axle in the housing and be sleeved on moving contact on the axle by axle sleeve, be installed in the axle and the spring base and the spring of rotating shaft lower end, described housing top operating head outside rotating shaft end is equipped with connector and pendulous device, it is characterized in that: described connector is to be riveted into one by brace and pivot pin, described pendulous device is a roller, described roller housing is contained on the pivot pin of connector, by screw rotatable operating head is installed on housing.
2. safety contact type limit switch according to claim 1 is characterized in that: the end that described rotating shaft is positioned at the housing head outside installs connector, rubber roll successively, and connector is sleeved on and is adjacent to packing ring on the rotating shaft boss and compresses by trip bolt.
3. safety contact type limit switch according to claim 1, it is characterized in that: the end that described rotating shaft is positioned at the housing head outside is coated with connector, steel roller successively, and connector is installed on to be shaped in the termination rotating shaft of convex striped and by trip bolt and clamps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020672167XU CN201904233U (en) | 2010-12-21 | 2010-12-21 | Safety contact-type limit switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020672167XU CN201904233U (en) | 2010-12-21 | 2010-12-21 | Safety contact-type limit switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201904233U true CN201904233U (en) | 2011-07-20 |
Family
ID=44274826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020672167XU Expired - Fee Related CN201904233U (en) | 2010-12-21 | 2010-12-21 | Safety contact-type limit switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201904233U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104011820A (en) * | 2012-01-13 | 2014-08-27 | 欧姆龙株式会社 | Limit switch |
| CN104900431A (en) * | 2015-06-17 | 2015-09-09 | 海安县申菱电器制造有限公司 | Elevator stroke switch and hoistway switch module |
| CN104900430A (en) * | 2015-06-17 | 2015-09-09 | 海安县申菱电器制造有限公司 | Elevator stroke switch and hoistway switch module |
| CN105489408A (en) * | 2016-01-14 | 2016-04-13 | 上海华晟电器有限公司 | Electromagnetic elevator limit switch device |
| CN105810467A (en) * | 2016-05-24 | 2016-07-27 | 江苏兰格特自动化设备有限公司 | Limit switch for valve actuator |
| CN108063064A (en) * | 2016-11-09 | 2018-05-22 | 霍尼韦尔国际公司 | Limit switch housing with function of reset |
-
2010
- 2010-12-21 CN CN201020672167XU patent/CN201904233U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104011820A (en) * | 2012-01-13 | 2014-08-27 | 欧姆龙株式会社 | Limit switch |
| CN104011820B (en) * | 2012-01-13 | 2016-10-12 | 欧姆龙株式会社 | Limit switch |
| CN104900431A (en) * | 2015-06-17 | 2015-09-09 | 海安县申菱电器制造有限公司 | Elevator stroke switch and hoistway switch module |
| CN104900430A (en) * | 2015-06-17 | 2015-09-09 | 海安县申菱电器制造有限公司 | Elevator stroke switch and hoistway switch module |
| CN105489408A (en) * | 2016-01-14 | 2016-04-13 | 上海华晟电器有限公司 | Electromagnetic elevator limit switch device |
| CN105810467A (en) * | 2016-05-24 | 2016-07-27 | 江苏兰格特自动化设备有限公司 | Limit switch for valve actuator |
| CN108063064A (en) * | 2016-11-09 | 2018-05-22 | 霍尼韦尔国际公司 | Limit switch housing with function of reset |
| CN108063064B (en) * | 2016-11-09 | 2021-08-24 | 霍尼韦尔国际公司 | Limit switch shell with reset function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20151221 |
|
| EXPY | Termination of patent right or utility model |