CN204905066U - Vacuum limit switch subassembly - Google Patents
Vacuum limit switch subassembly Download PDFInfo
- Publication number
- CN204905066U CN204905066U CN201520601885.0U CN201520601885U CN204905066U CN 204905066 U CN204905066 U CN 204905066U CN 201520601885 U CN201520601885 U CN 201520601885U CN 204905066 U CN204905066 U CN 204905066U
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- CN
- China
- Prior art keywords
- electrode
- piece
- limit switch
- collision block
- casing
- 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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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model provides a vacuum limit switch subassembly, including box, electrode a, electrode b and hitting the piece, electrode an and electrode b fix on the box, reserve gappedly between electrode an and the electrode b, the top end who hits the piece is corresponding with electrode b's bottom end, fixes the wire respectively on electrode an and electrode b through hitting the piece, the box is beryllium -bronze for polytetrafluoroethylene, electrode a with electrode b's material with the material of hitting the piece. The utility model discloses well box is beryllium -bronze for polytetrafluoroethylene, electrode a with electrode b's material with the material of hitting the piece to making the box, hitting the piece and be fit for using under vacuum environment with two electrodes, wherein, the box, hit the piece and have low temperature resistant, corrosion -resistant and not sticky characteristics, two electrodes have characteristics such as wear -resisting, low temperature resistant, nonmagnetic, high electric conductivity, impact sparkless.
Description
Technical field
The utility model relates to a kind of limit switch, especially a kind of vacuum limit switch.
Background technology
Because limit switch will use under vacuum conditions, the material of vacuum environment to the parts run therein has special requirement, and specific requirement is the saturated vapour pressure enough low (being even more important concerning ultra-high vacuum system) 1. under working temperature and baking temperature.2. chemical stability is good.Not oxidizable and corrosion, not with the working media in vacuum system and the venting generation chemical reaction in technical process.3. Heat stability is good.In working temperature (high temperature and the low temperature) scope of system, keep good vacuum performance and mechanical performance.The mechanical limit switch existed in the market cannot meet and uses under vacuum conditions, although also there is the mechanical limit switch that manufacturer production can use under vacuum conditions, but for our industry, all can not be suitable for, Problems existing is the problems such as overall dimension is excessive.
Summary of the invention
For the weak point existed in the problems referred to above, the utility model provides a kind of casing, collision block and electrode to be all the vacuum limit switch assemblies being applicable to using under vacuum conditions.
For achieving the above object, the utility model provides a kind of vacuum limit switch assembly, comprise casing (1), electrode a (2), electrode b (3) and collision block (5), described electrode a (2) and described electrode b (3) are all be fixed on described casing (1), are reserved with gap between described electrode a (2) and described electrode b (3);
The top end face of described collision block (5) is corresponding with the bottom end face of described electrode b (3), by described collision block (5), wire is separately fixed at described electrode a (2) with on described electrode b (3);
The material of described casing (1) and described collision block (5) is polytetrafluoroethylene, and described electrode a (2) is beryllium-bronze with the material of described electrode b (3).
Above-mentioned vacuum limit switch assembly, wherein, described electrode a (2) is arranged on the sidewall of described casing (1) by screw (4), and described electrode b (3) is arranged on the lower surface of described casing (1) by screw (4).
Above-mentioned vacuum limit switch assembly, wherein, one end of described electrode b contacts after the extruding of described collision block, with described electrode a.
Above-mentioned vacuum limit switch assembly, wherein, described casing (1) is arranged on the parts that do not move, and described collision block (5) is arranged on the parts of motion.
Compared with prior art, the utility model has the following advantages:
In the utility model, the material of casing and collision block is polytetrafluoroethylene, the material of electrode a and electrode b is beryllium-bronze, to make casing, collision block and two electrodes be all be applicable to using under vacuum conditions, wherein, casing, collision block have feature that is low temperature resistant, corrosion-resistant and not viscosity, and two electrodes have wear-resisting, low temperature resistant, nonmagnetic, high conductivity, impact the features such as no-spark.
Accompanying drawing explanation
Fig. 1 is structure chart of the present utility model.
Main Reference Numerals is described as follows:
1-casing; 2-electrode a; 3-electrode b; 4-screw; 5-collision block
Embodiment
As shown in Figure 1, the utility model comprises casing 1, electrode a2, electrode b3 and collision block 5, and electrode a2 and electrode b3 is fixed on casing 1, is reserved with gap between electrode a2 and electrode b3;
The top end face of collision block 5 is corresponding with the bottom end face of electrode b3, is separately fixed on electrode a2 and electrode b3 by wire by collision block 5.
Electrode a2 is arranged on the sidewall of casing 1 by screw 4, and electrode b3 is arranged on the lower surface of casing 1 by screw 4.
One end of electrode b contacts after the extruding of collision block, with electrode a.
Casing 1 is arranged on the parts that do not move, and collision block 5 is arranged on the parts of motion.
The material of casing and collision block is polytetrafluoroethylene, and the material of electrode a2 and electrode b3 is beryllium-bronze.Wherein, electrode b is curved special shape, makes its high resilience.
Polytetrafluoroethylmaterial material characteristic: 1. Long-Time Service temperature is-200 ~-260 degree, still soft when-100 spend, and has remarkable chemical resistance, all corrosion-resistant to all chemicals; 2. polytetrafluoroethylene weather also has good electrical property, excellent electric property, and be desirable C class F insulating material F, one deck that newspaper is thick just can stop the high pressure of 1500V; Its electrical insulating property not temperature influence, the dielectric constant of polytetrafluoroethylene in wider frequency range and dielectric loss all very low, and puncture voltage, specific insulation and arc resistance are all higher.3. not viscosity-there is surface tension minimum in solid material and do not adhere to any material; Its characteristic is well suited for using as the insulating material under vacuum environment.
Beryllium-bronze has wear-resisting, low temperature resistant, nonmagnetic, high conductivity, impacts the features such as no-spark, is suitable as electrode electric in vacuum and uses.
During use, be fixed on by casing not on moving component, be fixed on by collision block on moving component, by collision block extruding electrode b, its one end is contacted with electrode a, and now switch closedown, line vias, controlled motion component motor shuts down, and reaches spacing object.
The utility model patent is by following advantage:
1, simple and reliable for structure, small and exquisite easy-to-use, easy for installation, switch installation site is adjustable;
2, with low cost;
3, applicability is strong, can the zero-bit of rotating platform and spacing use the most, also can as the spacing use of translation stage.
The foregoing is only preferred embodiment of the present utility model, is only illustrative for invention, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes in the spirit and scope that invention claim limits to it, amendment, even equivalence, but all will fall in protection range of the present utility model.
Claims (4)
1. a vacuum limit switch assembly, it is characterized in that, comprise casing (1), electrode a (2), electrode b (3) and collision block (5), described electrode a (2) and described electrode b (3) are all be fixed on described casing (1), are reserved with gap between described electrode a (2) and described electrode b (3);
The top end face of described collision block (5) is corresponding with the bottom end face of described electrode b (3), by described collision block (5), wire is separately fixed at described electrode a (2) with on described electrode b (3);
The material of described casing (1) and described collision block (5) is polytetrafluoroethylene, and described electrode a (2) is beryllium-bronze with the material of described electrode b (3).
2. vacuum limit switch assembly according to claim 1, it is characterized in that, described electrode a (2) is arranged on the sidewall of described casing (1) by screw (4), and described electrode b (3) is arranged on the lower surface of described casing (1) by screw (4).
3. vacuum limit switch assembly according to claim 2, is characterized in that, one end of described electrode b contacts after the extruding of described collision block, with described electrode a.
4. according to described vacuum limit switch assembly arbitrary in claims 1 to 3, it is characterized in that, described casing (1) is arranged on the parts that do not move, and described collision block (5) is arranged on the parts of motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520601885.0U CN204905066U (en) | 2015-08-11 | 2015-08-11 | Vacuum limit switch subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520601885.0U CN204905066U (en) | 2015-08-11 | 2015-08-11 | Vacuum limit switch subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204905066U true CN204905066U (en) | 2015-12-23 |
Family
ID=54927225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520601885.0U Expired - Fee Related CN204905066U (en) | 2015-08-11 | 2015-08-11 | Vacuum limit switch subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204905066U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114446494A (en) * | 2022-01-17 | 2022-05-06 | 中国科学院上海光学精密机械研究所 | Limit switch in high vacuum space |
-
2015
- 2015-08-11 CN CN201520601885.0U patent/CN204905066U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114446494A (en) * | 2022-01-17 | 2022-05-06 | 中国科学院上海光学精密机械研究所 | Limit switch in high vacuum space |
| CN114446494B (en) * | 2022-01-17 | 2024-04-12 | 中国科学院上海光学精密机械研究所 | Limit switch in high vacuum space |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20210811 |