CN201804728U - Limit switch with roller connecting rod - Google Patents
Limit switch with roller connecting rod Download PDFInfo
- Publication number
- CN201804728U CN201804728U CN2010202316345U CN201020231634U CN201804728U CN 201804728 U CN201804728 U CN 201804728U CN 2010202316345 U CN2010202316345 U CN 2010202316345U CN 201020231634 U CN201020231634 U CN 201020231634U CN 201804728 U CN201804728 U CN 201804728U
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- CN
- China
- Prior art keywords
- bearing
- limit switch
- connecting rod
- shaft
- wheel hub
- 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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- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The utility model relates to a limit switch with a roller connecting rod. The limit switch is characterized in that a static contact and a moving contact with a rotating shaft are mounted in a casing; a binding post of the moving contact and the static contact is mounted at the upper end of the casing; a connecting rod is mounted at the outer end of the rotating shaft; a shaft is mounted at the front end of the connecting rod; a nylon hub with a rolling bearing is mounted on the shaft; an annular groove is arranged on the excircle of the nylon hub; a bead capable of increasing the friction force is arranged at the bottom of the annular groove; a rubber ring is mounted in the annular groove; one lateral surface of the nylon hub is closely matched with a shaft bearing protective cover; flanges are arranged at two end parts of the shaft; and the end parts of the shaft are riveted and fixed with a bearing inner ring through the flanges. The utility model has the advantages as follows: the switch solves the problem that the connecting rod roller generates noises and is difficult to assemble, not only avoids the relative displacement between the shaft and the bearing, ensures the rotation of the bearing and improves the protection function, but also can prevent a rubber ring from sliding and rotating after being used for a long term and ensure the normal action.
Description
Technical field
The utility model belongs to the limit switch technical field, particularly relates to a kind of limit switch with idler-wheel connecting-rod.
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 fixed contact is installed in the housing and rotates with rotating shaft, hull outside rotating shaft end is equipped with connecting rod, one end of connecting rod is equipped with the rubber wheel of axle and aluminum skeleton, the centre bore of aluminum skeleton embeds the nylon sleeve that has with the axle coupling, axle head is located with split washer and packing ring, and the other end of connecting rod is equipped with back-moving spring.The roller of this structure and axle be by the nylon sleeve rotation of form rolling, and makes that the gap changes thereupon between axle sleeve and the axle because nylon sleeve is yielding, thus elevator this roller generation noise when high-speed cruising, contaminated environment.In addition, traditional copper pipe car system axle sleeve withstands the inner ring of bearing and the outer end is fastening by nut, roller is rotated become bearing to rotate, and the long-term work nut can produce loosening, and then causes roller shaft and bearing that relative displacement takes place easily; Because the bearing that is embedded on the roller is in naked state, falls into dust easily, and has influenced attractive in appearance; Be installed in the cannelure of nylon wheel hub rubber ring through long-term use occur easily skidding from then influenced the normal use of limit switch.
Summary of the invention
The utility model for solve the technical problem that exists in the known technology provide a kind of simple in structure, can improve its barrier propterty, increase the service life and a kind of limit switch that noise is low with idler-wheel connecting-rod.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: the limit switch of band idler-wheel connecting-rod, comprise housing, be installed in moving contact and rotating shaft thereof in the housing, be installed in the fixed contact corresponding in the housing with moving contact, be installed in the connecting rod of moving contact rotating shaft outer end, be installed in the roller and the axle thereof of connecting rod front end, the back-moving spring that is installed in rod rear end is formed, it is characterized in that: described roller is the nylon wheel hub, the centre bore of nylon wheel hub has been embedded in bearing, nylon wheel hub cylindrical is shaped on cannelure, by cannelure rubber ring is installed, described cannelure bottom is shaped on the fin that can increase frictional force, described nylon wheel hub one side tight fit has the bearing protecting cover, is shaped on flange at the axle both ends and fixes by flange and bearing inner race riveted.
The utility model can also adopt following technical scheme: be provided with the dust-separation pad between described nylon wheel hub and the axle.
Described rubber ring cross section is shaped on transition arc.
The slot cross-section of described cannelure takes the shape of the letter U.
Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme, promptly be provided with protecting cover in nylon wheel hub one side, and promptly elegant in appearance, improved safeguard function again, increase the service life.Shaft end is fixed by flange and bearing inner race riveted, has avoided axle and bearing generation relative displacement, thereby has protected the rotation of bearing; Nylon wheel nave collar shape trench bottom be shaped on many protruding stupefied, can increase the frictional force of nylon wheel hub and rubber ring like this, prevent to occur after long-term the use rubber ring rotation of skidding, guaranteed the limit switch regular event.Because the rolling bearing that is embedded in of nylon wheel hub centre bore, its inner ring is fixed by shaft end flange riveted, makes the frictional rotation of roller become the rotation of bearing, has improved rotating speed, has eliminated noise, is easy to assembling, has improved production efficiency.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1; Fig. 2 is the upward view of Fig. 1.
Among the figure: 1, housing; 2, back-moving spring; 3, rotating shaft; 4, binding post; 5, moving contact; 6, connecting rod; 7, rubber ring; 8, protecting cover; 9, nylon wheel hub; 10, limit stops; 11, fixed contact; 12, insulation seat board; 13, rolling bearing; 14, dust-separation pad; 15, axle.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, now exemplify following examples, and conjunction with figs. is described in detail as follows: see also Fig. 1 and Fig. 2, the limit switch of band idler-wheel connecting-rod, front side wall is equipped with L shaped fixed contact 11 in the housing 1, and the middle part is horizontally installed with rotating shaft 3 in the housing, and insulation seat board 12 is installed in the rotating shaft, the front end of insulation seat board is equipped with and the contacted moving contact 5 of fixed contact, and the housing upper end is equipped with the binding post 4 of dynamic and static contact.Hull outside is equipped with the connecting rod 6 that drives the rotating shaft transposition, and the front end of connecting rod is equipped with axle 15, and the center that is equipped with on the axle has the nylon wheel hub 9 of rolling bearing 13, and nylon wheel hub and bearing are interference fit.The cylindrical of nylon wheel hub is shaped on cannelure, and the cross section of cannelure is a U-shaped, and described cannelure bottom is shaped on the fin that can increase frictional force.Rubber ring 7 is installed in cannelure, and described rubber ring 7 cross sections are shaped on transition arc.The rear end of connecting rod is equipped with the back-moving spring 2 that makes its return, and described nylon wheel hub one side tight fit has bearing protecting cover 8, is shaped on flange at the axle both ends and fixes by flange and bearing riveted.The housing front end also is equipped with the limit stops 10 of connecting rod, after the roller of connecting rod installs rolling bearing additional like this, when high speed rotating, does not produce noise, and the roller of connecting rod also is easy to assembling in addition.Between nylon wheel hub and axle, also be provided with dust-separation pad 14.
Claims (4)
1. limit switch with idler-wheel connecting-rod, comprise housing, be installed in moving contact and rotating shaft thereof in the housing, be installed in the fixed contact corresponding in the housing with moving contact, be installed in the connecting rod of moving contact rotating shaft outer end, be installed in the roller and the axle thereof of connecting rod front end, the back-moving spring that is installed in rod rear end is formed, it is characterized in that: described roller is the nylon wheel hub, the centre bore of nylon wheel hub has been embedded in bearing, nylon wheel hub cylindrical is shaped on cannelure, by cannelure rubber ring is installed, described cannelure bottom is shaped on the fin that can increase frictional force, described nylon wheel hub one side tight fit has the bearing protecting cover, is shaped on flange at the axle both ends and fixes by flange and bearing inner race riveted.
2. the limit switch of band idler-wheel connecting-rod according to claim 1 is characterized in that: be provided with the dust-separation pad between described nylon wheel hub and the axle.
3. the limit switch of band idler-wheel connecting-rod according to claim 1 is characterized in that: described rubber ring cross section is shaped on transition arc.
4. the limit switch of band idler-wheel connecting-rod according to claim 1 is characterized in that: the slot cross-section of described cannelure takes the shape of the letter U.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202316345U CN201804728U (en) | 2010-06-22 | 2010-06-22 | Limit switch with roller connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202316345U CN201804728U (en) | 2010-06-22 | 2010-06-22 | Limit switch with roller connecting rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201804728U true CN201804728U (en) | 2011-04-20 |
Family
ID=43874232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202316345U Expired - Fee Related CN201804728U (en) | 2010-06-22 | 2010-06-22 | Limit switch with roller connecting rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201804728U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104867717A (en) * | 2015-06-17 | 2015-08-26 | 海安县申菱电器制造有限公司 | Travel switch for elevator and hoistway switch component |
| 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 |
| CN105480798A (en) * | 2016-01-07 | 2016-04-13 | 日立电梯（中国）有限公司 | Closed roller switch for elevator with protection function |
| CN106743331A (en) * | 2017-02-15 | 2017-05-31 | 克莱门斯工业传感器南京有限公司 | Intelligent deviation switch and its monitoring method |
| CN108470822A (en) * | 2018-05-17 | 2018-08-31 | 南京溧水得瑞微型电机厂 | A kind of annular groove adjusts the pre-fastening structure of height |
-
2010
- 2010-06-22 CN CN2010202316345U patent/CN201804728U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104867717A (en) * | 2015-06-17 | 2015-08-26 | 海安县申菱电器制造有限公司 | Travel switch for elevator and hoistway switch component |
| 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 |
| CN105480798A (en) * | 2016-01-07 | 2016-04-13 | 日立电梯（中国）有限公司 | Closed roller switch for elevator with protection function |
| CN106743331A (en) * | 2017-02-15 | 2017-05-31 | 克莱门斯工业传感器南京有限公司 | Intelligent deviation switch and its monitoring method |
| CN108470822A (en) * | 2018-05-17 | 2018-08-31 | 南京溧水得瑞微型电机厂 | A kind of annular groove adjusts the pre-fastening structure of height |
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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: 20110420 Termination date: 20150622 |
|
| EXPY | Termination of patent right or utility model |