Overcurrent, overload and overheat protector
A protector and overcurrent technology, applied in protection switches, emergency protection devices, parts of protection switches, etc., can solve the problems of current overload protectors lack of multiple safety protection functions, inability to ensure electricity safety, and inability to automatically control , to achieve the effect of simple structure, low production cost, preventing repeated conduction or disconnection
Inactive Publication Date: 2015-07-01
姚家米
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Problems solved by technology
[0003] 1. The traditional current overload protector is generally connected by a pull rod and a spring to realize the conduction or disconnection of the current overload protector. The structure is complex, the production cost is high, and the service life is short;
[0004] 2. The traditional current overload protector lacks multiple safety protection functions. The current overload protector breaks the circuit when the current overload occurs. If the fault of the line or electrical equipment is not eliminated, it will automatically turn on again after a certain period of time. After a certain period of time, the current overload protection The circuit breaker will break again, so it cannot be automatically controlled until the fault of the line or electrical equipment is eliminated, and there is a state of repeated conduction or disconnection, which cannot ensure the safety of electricity use
Method used
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[0016] The following are the best embodiments of the overcurrent, overload and overheating protectors of the present invention, which do not limit the protection scope of the present invention.
[0017] Please refer to figure 1 , figure 2 with image 3 , the figure shows an overcurrent, overload, and overheat protector, including a housing 1, and also includes an insulating fixed seat 2 installed in the housing 1, and a moving reed assembly installed on the upper part of the insulating fixed seat 2. 3. The static contact piece assembly 4 installed on the lower part of the insulating holder 2, the moving reed assembly 3 is connected in series with the static contact piece assembly 4, the moving reed assembly 3 is equipped with a moving contact 5, the The static contact piece assembly 4 is equipped with a static contact 6. When the temperature in the housing 1 is higher than the set value or when there is an overcurrent or overload, the moving reed assembly 3 makes the moving...
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The invention discloses an overcurrent, overload and overheat protector, comprising a shell, an insulating holder, a moving spring component, and a fixed contact component. The insulating holder is mounted within the shell. The moving spring component is mounted on the upper portion of the insulating holder. The fixed contact component is mounted on the lower portion of the insulating holder. The moving spring component is serially connected with the fixed contact component. The moving spring component is provided with a moving contact. The fixed contact component is provided with a fixed contact. When the interior temperature of the shell is higher than a set value or overcurrent or overload occurs, the moving spring component drives the moving contact to pop up and separate from the fixed contact, thus driving the moving spring component to break with the fixed contact component. The overcurrent, overload and overheat protector has the advantages that a PTC (positive temperature coefficient) heating film is mounted in the shell, the PTC heating film is connected with an external power supply when the moving contact pops up and separates from the fixed contact, the protector is avoided being on or off repeatedly, and electrical safety can be guaranteed.
Description
technical field [0001] The present invention relates to a mechanical power control device, more specifically to a protector used for overcurrent, overload and overheat protection in control circuits of electric appliances, motors and switches. Background technique [0002] The current overload protector is widely used in various circuits. When the current in the line exceeds the set value, it can disconnect the line in time, protect the line and the electrical equipment in time, and improve the safety of electricity use. The existing current overload protector has the following defects: [0003] 1. The traditional current overload protector is generally connected by a pull rod and a spring to realize the conduction or disconnection of the current overload protector. The structure is complex, the production cost is high, and the service life is short; [0004] 2. The traditional current overload protector lacks multiple safety protection functions. The current overload prote...
Claims
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IPC IPC(8): H01H83/00H01H37/52
CPCH01H83/20H01H71/121H01H71/164
Inventor 姚家米
Owner 姚家米