SWITCH MODULE WITH A BUILT-IN STRUCTURE OF ANTI-SURGE AND DUAL DISCONNECTION

• US 20170148602A1
• Filed: 12/23/2016
• Published: 05/25/2017
• Est. Priority Date: 11/24/2015
• Status: Active Grant

• Current Assignee: I-Ying Wang, Yi-Hsiang Wang
• Original Assignee: Yi-Hsiang Wang
• Inventors: WANG, YI-HSIANG, WANG, I-YING
• Granted Patent: US 9,852,869 B2
• Time in Patent Office: Days
• CPC Class Codes: H01H 2205/002 fixed to operating part
• CPC Class Codes: H01H 2235/028 Blade spring
• CPC Class Codes: H01H 23/20 having snap action
• CPC Class Codes: H01H 37/761 with a fusible element forming part of the switched circuit H01H37/767 takes precedence
• CPC Class Codes: H01H 71/20 with fusible mass
• CPC Class Codes: H01H 83/10 operated by excess voltage, e.g. for lightning protection
• CPC Class Codes: H01H 89/04 Combination of a thermally actuated switch with a manually operated switch
• CPC Class Codes: H01H 9/0271 structurally combining a switch and an electronic component for relays H01H50/021

Abstract

A switch module with a built-in structure of anti-surge and dual disconnection mainly comprises an overcurrent protection switch having plates and insulating elements for anti-surge and dual disconnection structure ingeniously built inside a heat-resisting housing. The switch module has a first connecting point and a second connecting point for operation. When overvoltage occurs, temperature of at least one metal oxide varistor would instantly rise up to a degree higher than the melting point thereof, melting at least one thermo-sensitive piece, loosening at least one spring element, displacing a pushing element and thus forcing the connecting points detaching from each other to turn off the switch and stop supplying electricity power; meanwhile, insulating elements would isolate conductive components such as thermo-sensitive pieces, spring elements and plates to further ensure a complete disconnection and more of electricity safety.

Claims

1. A switch module with a built-in structure of anti-surge and dual disconnection, comprising:

a housing having a press button arranged atop thereof, and a first conductive plate, a second conductive plate and a third conductive plate arranged at a lower section thereof;

said first conductive plate being connected to a binary alloy conductive plate having a first connecting point, and the second conductive plate having a second connecting point on the surface of an upper section thereof corresponding to the first connecting point;

a moving rod linking up the bottom of the press button with one end and the binary alloy conductive plate with the other end for the first connecting point to contact the second connecting point, consequently turning on the switch, and for the first connecting point to detach from the second connecting point when current overload occurs and the binary alloy conductive plate is deformed due to high temperature, consequently turning off the switch, so as to form an overcurrent protection switch;

wherein a structure of anti-surge and dual disconnection is built inside the housing, including;

at least one metal oxide varistor being disposed under a plate and having a first surface and an opposite second surface;

at least one insulating element having a through hole arranged at a center thereof, an upper surface and a lower surface, said upper surface arranged correspondingly to the first surface of the metal oxide varistor;

at least one conductive spring element having an outer periphery with an extended portion connecting the first surface of the metal oxide varistor with the second conductive plate, and a springy section being compressed by the first surface of the metal oxide varistor in the through hole of the insulating element;

at least one thermo-sensitive piece which is conductive and solid colloid to be disposed in the through hole of the insulating element for the springy section of the spring element to be adhered between the lower surface of the insulating element and the first surface of the metal oxide varistor for electrical connection and for the spring element to be ready for ejection; and

a pushing element having a first end thereof arranged correspondingly to the metal oxide varistor, the insulating element and the springy section of the spring element, and a second end thereof arranged correspondingly to the binary alloy conductive plate for pushing;

whereby when the first connecting point is contacting the second connecting point and an overvoltage occurs, temperature of the metal oxide varistor would instantly rise up to a degree higher than the melting point thereof, therefore melting the thermo-sensitive piece, loosening the springy section of the spring element and displacing the pushing element to force the first connecting point detaching from the second connecting point and turn off the switch;

meanwhile, the insulating element also disconnects the circuit structure simultaneously.

2. The switch module with a built-in structure of anti-surge and dual disconnection as claimed in claim 1, wherein the pushing element has the second end arranged as a protruding portion and the first end including a positioning hole for the springy section of the spring element to engage therein, and the first end is arranged in a shape in accordance with shapes of the insulating element and the spring element.

3. The switch module with a built-in structure of anti-surge and dual disconnection as claimed in claim 1, wherein the second surface of the metal oxide varistor is connected to the third conductive plate by the plate and a conductive wire, and the plate and the conductive wire are formed in one-piece with the third conductive plate.

4. The switch module with a built-in structure of anti-surge and dual disconnection as claimed in claim 1, wherein the insulating element is arranged in a shape in correspondence to the shape of the metal oxide varistor and it has a surrounding protrusion on both the upper surface and the lower surface, individually forming a space thereon.

5. A switch module with a built-in structure of anti-surge and dual disconnection, comprising:

a housing having a press button arranged atop thereof, and a first conductive plate, a second conductive plate and a third conductive plate arranged at a lower section thereof;

said first conductive plate being connected to a binary alloy conductive plate having a first connecting point, and the second conductive plate having a second connecting point on the surface of an upper section thereof corresponding to the first connecting point;

a moving rod linking up the bottom of the press button with one end and the binary alloy conductive plate with the other end for the first connecting point to contact the second connecting point, consequently turning on the switch, and for the first connecting point to detach from the second connecting point when current overload occurs and the binary alloy conductive plate is deformed due to high temperature, consequently turning off the switch, so as to form an overcurrent protection switch;

wherein a structure of anti-surge and dual disconnection is built inside the housing, including;

a first metal oxide varistor being disposed under a plate and having a first surface and an opposite second surface;

a first insulating element having a through hole arranged at a center thereof, an upper surface and a lower surface, said upper surface arranged correspondingly to the first surface of the first metal oxide varistor;

at least one conductive spring element having an outer periphery with a first extended portion connecting the first surface of the first metal oxide varistor with the second conductive plate, and a springy section being compressed in the through hole of the first insulating element by the first surface of the first metal oxide varistor;

a first thermo-sensitive piece which is conductive and solid colloid to be disposed in the through hole of the first insulating element for the springy section of the spring element to be compressed and adhered between the lower surface of the first insulating element and the first surface of the first metal oxide varistor for electrical connection and for the spring element to be ready for ejection;

a second metal oxide varistor having a first surface and an opposite second surface;

said first surface compressing the spring element;

a second insulating element having a through hole arranged at a center thereof, an upper surface and a lower surface, said upper surface arranged correspondingly to the second surface of the second metal oxide varistor;

an electrical connector having an outer periphery with a second extended portion electrically connecting the second surface of the second metal oxide varistor with the third conductive plate, and a springy section being compressed by the lower surface of the second insulating element and the second surface of the second metal oxide varistor;

a second thermo-sensitive piece which is conductive and solid colloid to be disposed in the through hole of the second insulating element, electrically connecting the electrical connector and the second surface of the second metal oxide varistor; and

a pushing element having a first end thereof arranged correspondingly to the second surface of the second metal oxide varistor, the second insulating element and the electrical connector, and a second end thereof arranged correspondingly to the binary alloy conductive plate for pushing;

whereby when the first connecting point is contacting the second connecting point and an overvoltage occurs, temperature of either of the metal oxide varistors would instantly rise up to a degree higher than the melting point thereof, therefore melting a corresponding thermo-sensitive piece, loosening the springy section of the spring element and displacing the pushing element to force the first connecting point detaching from the second connecting point and turn off the switch;

meanwhile, either of the insulating elements also disconnects either of the circuit structures simultaneously.

6. The switch module with a built-in structure of anti-surge and dual disconnection as claimed in claim 5, wherein the electrical connector is made of a spring, and the first end of the pushing element has a positioning hole for engagement with the springy section.

7. The switch module with a built-in structure of anti-surge and dual disconnection as claimed in claim 5, wherein the plate is connected to the third conductive plate or to the ground.

8. A switch module with a built-in structure of anti-surge and dual disconnection, comprising:

a housing having a press button arranged atop thereof, and a first conductive plate, a second conductive plate and a third conductive plate arranged at a lower section thereof;

said first conductive plate being connected to a binary alloy conductive plate having a first connecting point, and the second conductive plate having a second connecting point on the surface of an upper section thereof corresponding to the first connecting point;

a moving rod linking up the bottom of the press button with one end and the binary alloy conductive plate with the other end for the first connecting point to contact the second connecting point, consequently turning on the switch, and for the first connecting point to detach from the second connecting point when current overload occurs and the binary alloy conductive plate is deformed due to high temperature, consequently turning off the switch, so as to form an overcurrent protection switch;

wherein a structure of anti-surge and dual disconnection is built inside the housing, including;

a first metal oxide varistor being disposed under a plate and having a first surface and an opposite second surface;

a first insulating element having a through hole arranged at a center thereof, an upper surface and a lower surface, said upper surface arranged correspondingly to the first surface of the first metal oxide varistor;

a conductive first spring element having an outer periphery with a first extended portion connecting the first surface of the first metal oxide varistor with the second conductive plate, and a springy section being compressed in the through hole of the first insulating element by the first surface of the first metal oxide varistor;

a first thermo-sensitive piece which is conductive and solid colloid to be disposed in the through hole of the first insulating element for the springy section of the first spring element to be compressed and adhered between the lower surface of the first insulating element and the first surface of the first metal oxide varistor for electrical connection and for the first spring element to be ready for ejection;

a second metal oxide varistor having a first surface and an opposite second surface;

said first surface compressing the first spring element;

a second insulating element having a through hole arranged at a center thereof, an upper surface and a lower surface, said upper surface arranged correspondingly to the second surface of the second metal oxide varistor;

a conductive second spring element having an outer periphery with a second extended portion electrically connecting the second surface of the second metal oxide varistor with the third conductive plate, and a springy section being compressed in the through hole of the second insulating element by the second surface of the second metal oxide varistor;

a second thermo-sensitive piece which is conductive and solid colloid to be disposed in the through hole of the second insulating element for the springy section of the second spring element to be compressed and adhered between the lower surface of the second insulating element and the second surface of the second metal oxide varistor for electrical connection and for the second spring element to be ready for ejection;

a third metal oxide varistor having a first surface and an opposite second surface;

said second surface compressing the second spring element;

a third insulating element having a through hole arranged at a center thereof, an upper surface and a lower surface, said upper surface arranged correspondingly to the first surface of the third metal oxide varistor;

an electrical connector having an outer periphery with a third extended portion electrically connecting to the third metal oxide varistor and the plate with the ground, and a springy section being compressed under the third insulating element and the first surface of the third metal oxide varistor;

a third thermo-sensitive piece which is conductive and solid colloid to be disposed in the through hole of the third insulating element for the springy section of the electrical connector to be compressed and adhered between the lower surface of the third insulating element and the first surface of the third metal oxide varistor for electrical connection and for the electrical connector to be ready for ejection; and

a pushing element having a first end thereof arranged correspondingly to the first surface of the third metal oxide varistor, the third insulating element and the electrical connector, and a second end thereof arranged correspondingly to the binary alloy conductive plate for pushing;

whereby when the first connecting point is contacting the second connecting point and an overvoltage occurs, temperature of either of the metal oxide varistors would instantly rise up to a degree higher than the melting point thereof, therefore melting a corresponding thermo-sensitive piece, loosening the springy section of a corresponding spring element and displacing the pushing element to force the first connecting point detaching from the second connecting point and turn off the switch;

meanwhile, either of the insulating elements also disconnects either of the circuit structures simultaneously.

9. The switch module with a built-in structure of anti-surge and dual disconnection as claimed in claim 8, wherein the plate further has a conductive element to be electrically connected to the third extended portion of the electrical connector, and the electrical connector is made of a spring and has an outer periphery and a springy section being compressed by the third insulating element and the first surface of the third metal oxide varistor;

and the pushing element further has a positioning hole to engage with the springy section of the electrical connector.