CN2350853Y - Timer switch device - Google Patents
Timer switch device Download PDFInfo
- Publication number
- CN2350853Y CN2350853Y CN 98225644 CN98225644U CN2350853Y CN 2350853 Y CN2350853 Y CN 2350853Y CN 98225644 CN98225644 CN 98225644 CN 98225644 U CN98225644 U CN 98225644U CN 2350853 Y CN2350853 Y CN 2350853Y
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- utility
- model
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- contact
- lever
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- Expired - Fee Related
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Abstract
The utility model relates to a switching device for motor type and mechanical timers, which belongs to the application research of the low voltage apparatus technology. A reverse double lever mechanism is composed of a central lever, a movable touch bridge, a tension spring, etc. The movable touch bridge is prompted to produce rebound action through the change of the relative position of two towing points of the tension spring, and a moving contact produces a high speed and a certain contact pressure in action moment. The utility model has the advantages of effective arc elimination, high making and breaking capacities of the switch and high operation safety. The laggard leaf spring switch is replaced by the utility model.
Description
The utility model relates to the application study in low voltage electrical apparatus technology field, and it belongs to the switching device in motor-type and the mechanical timer.
As everyone knows, on-load switch in the timer, all adopt reed structure, it is by the elastic reaction of reed self, and the interaction of slide block and cam, promote conductive contact and realize connecting and cutting off load current, because the restriction of its mechanism characteristics has retrained the action spot speed and the contact pressure of conductive contact, so very easily produces electric arc, contact temperature is raise even burn out, thereby limited its make-break capacity and operational reliability greatly.The state-of-the-art technology of relevant timer on-load switch does not have publication as yet in the patent documentation.
The purpose of this utility model is the make-break capacity that improves the timer on-load switch, reaches safety and reliability.
For realizing above-mentioned purpose, scheme of the present utility model is like this design: the switching device of being made up of driving key (3), central lever (4), support (5), movable contact bridge (7), extension spring (6), moving contact (9), fixed contact (8) and fixed contact (10), it is characterized in that the fulcrum A of central lever (4) is located at a side of moving contact (9), its not end points top is provided with driving key (3); The fulcrum B of movable contact bridge (7) is located at and is across near central lever (4) not on the support of end points (5), its not end points is provided with moving contact (9), parallel installation of two levers and direction are opposite, their in addition two end points all are located near the position of end points not separately, by extension spring (6) traction, constitute reverse dual lever mechanism; Fixed contact (10) and fixed contact (8) are arranged at the both sides up and down of moving contact (9) respectively; Driving key (3) is formed with the end lever as transmission mechanism and slide block (2), and its fulcrum C is located at cam (1) one side, and transmission is also amplified slide block (2) and the movement travel of cam (1), promotes central lever (4) and carries out work.
Operation principle of the present utility model is: in above-mentioned reverse parallel bars structure mechanism, when driving key (3) promotes the not end points displacement of central lever (4), two towing point relative positions of extension spring (6) change, the movable contact bridge (7) that is being drawn by extension spring (6) other end promptly produces bounce-back, moving contact (9) is promptly invested fixed contact (10) or (8) from fixed contact (8) or (10) rapidly, the action spot speed is exceedingly fast and keeps certain contact pressure, thereby eliminate electric arc effectively, improve the switch on and off ability, make the operation safety and reliability.
Now in conjunction with the accompanying drawings and embodiments the utility model is further specified:
Fig. 1 is a structure chart of the present utility model,
Fig. 2 is a working state figure of the present utility model,
Sequence number among the figure and symbol description:
(1) cam, (2) slide block, (3) driving key, (4) central lever, (5) support, (6) extension spring, (7) movable contact bridge, (8) fixed contact, (9) moving contact, (10) fixed contact, (A) (B) (C) be each balance pivot.
Embodiment: during timer work, cam (1) rotates, slide block (2) is in the garden of cam (1) on week, driving key (3) is in the lower position, the extension spring towing point of central lever (4) is lower than the towing point on the movable contact bridge (7), movable contact bridge (7) is pulled to the below, and moving contact (9) is close to fixed contact (10); When finishing the work, timer prescribes a time limit, slide block (2) slides in the groove of cam (1) of rotation, driving key (3) is promptly got back to upper limit position, central lever (4) and the extension spring towing point on it rise thereupon, exceed the towing point on the movable contact bridge (7), movable contact bridge this moment (7) rebounds, and moving contact (9) is promptly invested fixed contact (8) rapidly from fixed contact (10), finishes switching process.
Support (5) double as electric conductor, electric current transfers to load from support (5) introduce, flow through movable contact bridge (7), moving contact (9), fixed contact (8) or fixed contact (10), two fixed contacts are as Chang Kai and normally-closed contact, for the usefulness of time opening or timing turning off load current kinetic energy.
Claims (2)
1, the timer switch device is made up of driving key (3), central lever (4), movable contact bridge (7), extension spring (6), moving contact (9), fixed contact (8) and fixed contact (10), it is characterized in that: the fulcrum A of central lever (4) is located at a side of moving contact (9), and its not end points top is provided with driving key (3); The fulcrum B of movable contact bridge (7) is located at and is across near central lever (4) not on the support of end points (5), and its not end points is provided with moving contact (9); Parallel installation of two levers and direction are opposite, and their in addition two end points all are located near the position of end points not separately, by extension spring (6) traction, constitute reverse dual lever mechanism.
2, timer switch device according to claim 1 is characterized in that driving key (3) as transmission mechanism, forms with the end lever with the close locational slide block of fulcrum C (2), and its fulcrum C is provided with cam (1) one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98225644 CN2350853Y (en) | 1998-11-12 | 1998-11-12 | Timer switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98225644 CN2350853Y (en) | 1998-11-12 | 1998-11-12 | Timer switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2350853Y true CN2350853Y (en) | 1999-11-24 |
Family
ID=33976294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98225644 Expired - Fee Related CN2350853Y (en) | 1998-11-12 | 1998-11-12 | Timer switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2350853Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426945A (en) * | 2011-09-20 | 2012-04-25 | 上海诺雅克电气有限公司 | Switching device with lever ratio |
| CN113584802A (en) * | 2021-08-27 | 2021-11-02 | 江苏凯德电控科技有限公司 | Timer and clothes dryer |
-
1998
- 1998-11-12 CN CN 98225644 patent/CN2350853Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426945A (en) * | 2011-09-20 | 2012-04-25 | 上海诺雅克电气有限公司 | Switching device with lever ratio |
| CN113584802A (en) * | 2021-08-27 | 2021-11-02 | 江苏凯德电控科技有限公司 | Timer and clothes dryer |
| CN113584802B (en) * | 2021-08-27 | 2023-08-08 | 江苏凯德电控科技有限公司 | Timer and clothes dryer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |