CN201213110Y

CN201213110Y - Tunable over-temperature bipolar breaking heat cutter

Info

Publication number: CN201213110Y
Application number: CNU2008201206618U
Authority: CN
Inventors: 陈永龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-30
Filing date: 2008-06-30
Publication date: 2009-03-25
Anticipated expiration: 2018-06-30

Abstract

An adjustable bipolar-disconnectable heat amputator upon overheat comprises a temperature-sensing assembly composed of a temperature-sensing cylinder, a capillary pipe and a sylphon; a switch assembly composed of a switch box, a movable contact component and a static contact component; and an adjusting screw. The switch assembly is arranged inside the switch box, the switch box comprises a base and a plastic cover, the middle of the base is provided with a partition wall and the bottom of the base is provided with a round hole, the middle of the partition wall is provided with a punch hole corresponding to the round hole, the top surface of the base is provided with a raised disc-shaped concave surface, a cross-shaped reset pushing rod passes through the punch hole and the round hole to have a free fit with the round hole, the plastic cover is clamped on the base, the sylphon is arranged inside an iron cover, a damping spring is clamped inside the iron cover and positioned on the bottom surface of the sylphon, a round kicking piece is arranged on the disc-shaped concave surface, the iron cover is fixed on the base by a screw, the adjusting screw is screwed into the middle tapped hole of the iron cover to contact the sylphon, one side of the round kicking piece is connected with the sylphon, and the other side of the round kicking piece is positioned on the cross-shaped reset pushing rod. The utility model has the advantages of reasonable design, reliable performance and convenient assembly and disassembly between components.

Description

Tunable over-temperature bipolar breaking heat cutter

Technical field

The utility model relates to mechanical type temperature control technology field, refers in particular to a kind of thermal cut-out device.

Background technology

Chinese patent once disclosed a kind of " expansion of liquids formula thermal cut-out device " (ZL012355550, CN2479632Y, day for announcing 2002.02.27), comprise by temperature sensing tube, capillary, the temperature module that bellows is formed, by switch enclosure, moving contact component, the switch module that the fixed contact assembly is formed, and adjustment screw, main body and dividing plate, switch module adopts along the dynamic formula switch module, in switch enclosure, be provided with single-stage stairstepping restoring lever, its low side is positioned at the moving contact below, the high-end location hole that is provided with also is provided with the push rod that resets, and dividing plate middle part location hole is inserted on its top, its underpart is provided with boss and inserts and carry out the activity connection in the restoring lever location hole, and installation threaded post and dividing plate are injected into a whole and are positioned at the dividing plate top.Advantages such as it has that cost is lower, simple in structure, volume is little, mounting or dismounting are convenient between each part.But it is not bipolar, and overall construction design is not very good, as the push rod that resets resets moving contact component by restoring lever, and is just unreasonable.

The utility model content

The purpose of this utility model is to provide a kind of tunable over-temperature bipolar breaking heat cutter, and it has installs and removes advantages such as convenient between reasonable in design, dependable performance, each part.

For achieving the above object, the solution that the utility model is taked is: a kind of tunable over-temperature bipolar breaking heat cutter, comprise by temperature sensing tube, capillary, the temperature module that bellows is formed, by switch enclosure, moving contact component, the switch module that the fixed contact assembly is formed, and adjustment screw, switch enclosure is made of base and vinyl cover, a partition wall is set in the middle of the base, the top is provided with a circular hole, partition wall separates the two poles of the earth, the middle corresponding perforation that is provided with of partition wall with circular hole, have screw in the partition wall on perforation both sides, an outstanding disc concave surface is set on the base, cross is joined by reset push rod one end montant diameter setting and circular hole pine, other end montant end diameter is less than root diameter (RD), cross reset push rod pass the perforation and circular hole, the reset cross bar of push rod of cross is in the base, two fixed contact assemblies are separately fixed at the dark slightly opening part in two places that base one end has separated by rivet, two terminal blocks and two moving contact components are separately fixed at the shallow slightly opening part in two places that the base other end has separated by rivet, two moving contact components respectively with two fixed contact assembly closures, cross reset the cross bar of push rod be in two moving contact components above, small sircle hole is set in the middle of the vinyl cover, have the fixing hole corresponding in the vinyl cover on small sircle hole both sides with screw, vinyl cover and base card are joined, cross resets, and push rod other end montant passes its end diameter of small sircle hole and the small sircle hole pine is joined, two tapping screws pass two fixing holes respectively and are screwed into two screws respectively vinyl cover is fixed on below the base, bellows is contained in the iron covering, the damping spring sheet is installed on and is in below the bellows in the iron covering, circular kick sheet is placed on the disc concave surface, the internal diameter of iron covering is just greater than disc concave surface external diameter, iron covering by screw on base, adjustment screw is screwed into bellows from the middle screw of iron covering and contacts, and circular kick sheet one side contacts with bellows, another side is in cross and resets on the push rod one end montant.

This tunable over-temperature bipolar breaking heat cutter reasonable in design, base, vinyl cover, iron covering cooperate apt, and compared with prior art, structure is succinct more, mounting or dismounting are convenient between each part, performance is more reliable.During work, temperature sensing tube all is in the temperature field that will limit, when temperature rises, expansion of liquids in the temperature sensing tube, by capillary bellows is expanded, bellows expands and makes circular kick sheet distortion promote the cross push rod that resets, reset two moving contact components of cross bar compressing of push rod of cross.When rising to design temperature and being overtemperature, circular kick sheet kick distortion is enough to make reset two moving contact components of cross bar compressing of push rod of cross to make them leave two fixed contact assemblies, cuts off heater circuit.Design temperature is regulated by adjustment screw.Because circular kick sheet has surpassed the critical point that resets; circular kick sheet can not automatically reset after temperature descended; need push away the cross push rod other end montant that resets resets circular kick sheet kick; after circular kick sheet resets; the cross push rod that resets has lost pressure; with two fixed contact assembly closures, circuit is reclosed after two moving contact components reset, reach the purpose of overtemperature prote.

Description of drawings

Fig. 1 is that the master of present embodiment looks schematic diagram.

Fig. 2 is the schematic top plan view of present embodiment.

Fig. 3 is that the master of present embodiment looks generalized section.

Fig. 4 is the A-A cutaway view among Fig. 2.

Among the figure: 1, adjustment screw, 2, iron covering, 3, base, 4, terminal block, 5, vinyl cover, 6, capillary, 7, temperature sensing tube, 8, the fixed contact assembly, 9, screw, 10, tapping screw, 11, the cross push rod that resets, 12, the damping spring sheet, 13, bellows, 14, circular kick sheet, 15, rivet, 16, moving contact component.

Embodiment

Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.

Referring to Fig. 1-Fig. 4, a kind of tunable over-temperature bipolar breaking heat cutter, comprise by temperature sensing tube 7, capillary 6, the temperature module that bellows 13 is formed, by switch enclosure, moving contact component 13, the switch module that fixed contact assembly 8 is formed, and adjustment screw 1, switch enclosure is made of base 3 and vinyl cover 5, a partition wall is set in the middle of the base 3, the top is provided with a circular hole, partition wall separates the two poles of the earth, the middle corresponding perforation that is provided with of partition wall with circular hole, have screw in the partition wall on perforation both sides, an outstanding disc concave surface is set on the base 3, cross is joined by reset push rod 11 1 end montant diameter settings and circular hole pine, other end montant end diameter is less than root diameter (RD), cross reset push rod 11 pass the perforation and circular hole, the reset cross bar of push rod 11 of cross is in the base 3, two fixed contact assemblies 8 are separately fixed at the dark slightly opening part in two places that base 3 one ends have separated by rivet 15, two terminal blocks 4 and two moving contact components 16 are separately fixed at the shallow slightly opening part in two places that base 3 other ends have separated by rivet 15, two moving contact components 16 respectively with two fixed contact assembly 8 closures, cross reset the cross bar of push rod 11 be in two moving contact components 16 above, small sircle hole is set in the middle of the vinyl cover 5, have the fixing hole corresponding in the vinyl cover 5 on small sircle hole both sides with screw, vinyl cover 5 is joined with base 3 cards, cross resets, and push rod 11 other end montants pass its end diameter of small sircle hole and the small sircle hole pine is joined, two tapping screws 10 pass two fixing holes respectively and are screwed into two screws respectively vinyl cover 5 is fixed on below the base 3, bellows 13 is contained in the iron covering 2, damping spring sheet 12 is installed on and is in below the bellows 13 in the iron covering 2, circular kick sheet 14 is placed on the disc concave surface, the internal diameter of iron covering 2 is just greater than disc concave surface external diameter, iron covering 2 is fixed on the base 3 by screw 9, adjustment screw 1 is screwed into bellows 16 from the middle screw of iron covering 2 and contacts, and circular kick sheet 14 one sides contact with bellows 16, another side is in cross and resets on the push rod 11 1 end montants.

Present embodiment is WK-22KSR type tunable over-temperature bipolar breaking heat cutter III.

Claims

1, a kind of tunable over-temperature bipolar breaking heat cutter, comprise by temperature sensing tube (7), capillary (6), the temperature module that bellows (13) is formed, by switch enclosure, moving contact component (13), the switch module that fixed contact assembly (8) is formed, and adjustment screw (1), switch enclosure is made of base (3) and vinyl cover (5), it is characterized in that: a partition wall is set in the middle of the base (3), the top is provided with a circular hole, partition wall separates the two poles of the earth, the middle corresponding perforation that is provided with of partition wall with circular hole, have screw in the partition wall on perforation both sides, an outstanding disc concave surface is set on the base (3), cross is joined by reset push rod (11) one end montant diameter settings and circular hole pine, other end montant end diameter is less than root diameter (RD), cross reset push rod (11) pass the perforation and circular hole, the reset cross bar of push rod (11) of cross is in the base (3), two fixed contact assemblies (8) are separately fixed at the dark slightly opening part in two places that base (3) one ends have separated by rivet (15), two terminal blocks (4) and two moving contact components (16) are separately fixed at the shallow slightly opening part in two places that base (3) other end has separated by rivet (15), two moving contact components (16) respectively with two fixed contact assemblies (8) closure, cross reset the cross bar of push rod (11) be in two moving contact components (16) above, small sircle hole is set in the middle of the vinyl cover (5), the vinyl cover on small sircle hole both sides has the fixing hole corresponding with screw in (5), vinyl cover (5) is joined with base (3) card, cross resets, and push rod (11) other end montant passes its end diameter of small sircle hole and the small sircle hole pine is joined, two tapping screws (10) pass two fixing holes respectively and are screwed into two screws respectively vinyl cover (5) is fixed on below the base (3), bellows (13) is contained in the iron covering (2), damping spring sheet (12) is installed on and is in below the bellows (13) in the iron covering (2), circular kick sheet (14) is placed on the disc concave surface, the internal diameter of iron covering (2) is just greater than disc concave surface external diameter, iron covering (2) is fixed on the base (3) by screw (9), adjustment screw (1) is screwed into from the middle screw of iron covering (2) with bellows (16) and contacts, and circular kick sheet (14) one side contacts with bellows (16), another side is in cross and resets on push rod (11) the one end montants.