CN101562091A

CN101562091A - Magnetic-sensing button type steam switch of electric kettle

Info

Publication number: CN101562091A
Application number: CNA200910039780XA
Authority: CN
Inventors: 颜陶
Original assignee: FOSHAN CHUANDONG THERMAL MAGNETIC Co Ltd
Current assignee: Guangdong Nanzhen Electric Appliance Co ltd; Chuandong Magnetic Electronic Co Ltd
Priority date: 2009-05-26
Filing date: 2009-05-26
Publication date: 2009-10-21
Anticipated expiration: 2029-05-26
Also published as: CN101562091B

Abstract

The invention discloses a magnetic-sensing button type steam switch of an electric kettle, which comprises a body and a button; wherein, the body is provided with a cylinder, a cavity of which is internally provided with a hard support that is provided with a hard magnetic, a spring is sheathed outside the cylinder, the bottom of the body is fixed with soft magnetic and the hard magnetic matched with the soft magnetism, and the soft magnetic is also corresponding to a steam hole; the button is internally provided with a mandril and externally provided with a contact, the button is matched with the outside surface of the cylinder in a sliding way, the lower end of the mandril is contacted with the upper surface of the hard magnetic, and the two ends at the bottom of the button are in interference tight fit with the two ends of the hard support and can fix the hard magnetism; the body is fixed with a first terminal, a second terminal is arranged above the first terminal, a ring is arranged between the first terminal and the second terminal, the first terminal, the ring and the second terminal are sequentially connected with each other by a screw rod, the second terminal is fixed with an elastic piece which is corresponding to the contact, the lower side of the elastic piece is provided with a moving contact, the upper side of the first terminal is provided with a fixed contact, and the moving contact is corresponding to the fixed contact. The invention has the advantages of high accuracy of temperature control and good action reliability.

Description

A kind of magnetic-sensing button type steam switch of electric kettle

Technical field

The present invention relates to a kind of steam cock, more particularly, relate to a kind of magnetic-sensing button type steam switch of electric kettle.

Background technology

Consulting Fig. 1, is the structural representation of the electric kettle that has steam cock of prior art.The steam cock of existing domestic electric heating kettle is by being installed in temperature-sensitive bimetal leaf 3 on the kettle 1 as temperature sensing medium.Depress rocker type switch 6 during work, the top of rocker type switch 6 contacts with temperature-sensitive bimetal leaf 3, and at this moment, movable contact spring 8 and static contact 7 are in on-state, begins heating.When the water in the kettle 1 reaches boiling point, temperature-sensitive bimetal leaf 3 arrives operating temperature point and produces distortion through Steam Heating, promote rocker type switch 6 and rotate around fulcrum, under the effect of flexure strip 5, the other end of rocker type switch 6 promotes movable contact spring 8 and cuts off circuit with 7 rapid separation of static contact.Also can act on flexure strip 5 and realize the final circuit that cuts off by temperature-sensitive bimetal leaf 3 pushing action bars 4.In addition, be installed in the structure of kettle bottom in addition, its operation principle is similar with above-mentioned principle.There is following problem in the steam cock of above-mentioned domestic electric heating kettle: the difficulty of processing of temperature-sensitive bimetal leaf 3 is bigger, and temperature-controlled precision is relatively poor, and corrosion-resistant is easily got rusty and caused losing efficacy the most of dependence on import of material; In use, integrally-built stability is bad, and vibrations are arranged slightly, is easy to generate misoperation, or Yin Wendu control is inaccurate, causes jumping early or boiling time long.

Summary of the invention

Technical problem to be solved by this invention provides a kind of magnetic-sensing button type steam switch of electric kettle, and this magnetic-sensing button type steam switch of electric kettle temperature-controlled precision height, reliable in action are good.

In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:

A kind of magnetic-sensing button type steam switch of electric kettle comprises body and button; On described body, be provided with tube, hard holder be installed in the tube chamber and in hard holder, be provided with a Hard Magnetic, outside tube, be inserted in spring, and be fixed with a soft magnetism in the body bottom, Hard Magnetic match with soft magnetism and soft magnetism corresponding with the steam hole on the kettle; Be provided with push rod and be provided with contact in button outside button, button and tube outer surface are slidingly matched, and the push rod lower end contacts with the Hard Magnetic upper surface, and two ends, button bottom and hard holder two ends interference close-fitting and fixing Hard Magnetic; On described body, be fixed with the first terminal, above this first terminal, has second terminal, between the first terminal and second terminal, be provided with circle, the first terminal, circle, second terminal connect by screw rod, be fixed with shell fragment on second terminal, shell fragment is corresponding with contact, is provided with moving contact at the shell fragment downside, be provided with fixed contact at the first terminal upside, described moving contact is corresponding with fixed contact.

Described tube is a cylinder.

The present invention presses the button during work owing to adopted said structure, and spring is compressed and makes Hard Magnetic and soft magnetism adhesive, the contact action on the button also make moving contact and the fixed contact connection, and the water in the kettle begins heating; When water reached boiling point, soft magnetism arrived operating temperature point and loses magnetic conductivity through Steam Heating, and under the effect of spring, button is upspring, and moving contact separates rapidly with fixed contact and cuts off circuit, and kettle quits work.So temperature-controlled precision height of the present invention, its temperature-controlled precision can reach ± and 1 ℃, reliable in action of the present invention is good simultaneously.In addition, corrosion-resistant, the good manufacturability of the present invention, low to the part processing requirement, can realize the technology production domesticization of rapid electric kettle.

After the detailed description of reading embodiments of the present invention in conjunction with the accompanying drawings, it is clearer that characteristics of the present invention and advantage will become.

Description of drawings

Fig. 1 is the structural representation of the electric kettle that has steam cock of prior art;

Fig. 2 is the decomposition chart of embodiments of the present invention;

Fig. 3 is the schematic diagrames of embodiments of the present invention under idle state; And

Fig. 4 is that embodiments of the present invention are at the schematic diagram of pressing under the operating state.

Among the figure: kettle 1, steam hole 2, temperature-sensitive bimetal leaf 3, actuating strut 4, flexure strip 5, rocker type switch 6, static contact 7, movable contact spring 8, screw 9, button 11, push rod 111, contact 112, Hard Magnetic 12 be installed, held in the palm 13 firmly, spring 14, screw rod 15, shell fragment 16, moving contact 17, second terminal 18, fixed contact 19, circle 20, the first terminal 21, body 22, tube 221, soft magnetism 23.

Embodiment

The present invention is further detailed explanation with an execution mode below, but should illustrate that protection scope of the present invention is not limited only to this.

Consult Fig. 2, a kind of magnetic-sensing button type steam switch of electric kettle comprises body 22 and button 11; On body 22, be provided with tube 221, tube 221 is a cylinder, hard holder 13 is installed in cylinder chamber and in hard holder 13, is provided with a Hard Magnetic 12, go into spring 14 at cylinder sleeve, and be fixed with a soft magnetism 23 in body 22 bottoms, Hard Magnetic 12 match with soft magnetism 23 and soft magnetism 23 corresponding with the steam hole 2 on the kettle 1; In button 11, be provided with push rod 111 and outside button 11, be provided with contact 112, see Fig. 3 and Fig. 4, button 11 is slidingly matched with cylinder outer surface, and push rod 111 lower ends contacts with Hard Magnetic 12 upper surfaces, and two ends, button 11 bottom with hold in the palm also fixing Hard Magnetic 12 of 13 two ends interference close-fittings firmly; On body 22, be fixed with the first terminal 21, above this first terminal 21, has second terminal 18, between the first terminal 21 and second terminal 18, be provided with circle 20, the first terminal 21, circle 20, second terminal 18 connect by screw rod 15, be fixed with shell fragment 16 on second terminal 18, shell fragment 16 is corresponding with contact 112, is provided with moving contact 17 at shell fragment 16 downsides, be provided with fixed contact 19 at the first terminal 21 upsides, described moving contact 17 is corresponding with fixed contact 19.

During present embodiment work, press the button 11, spring 14 is compressed, thus Hard Magnetic 12 and soft magnetism 23 adhesives, the contact 112 on the button 11 moves and depresses shell fragment 16 and make moving contact 17 and fixed contact 19 connections, and at this moment, the water in the kettle 1 begins heating.When the water in the kettle 1 reached boiling point, steam was come out by steam hole 2, and soft magnetism 23 arrives operating temperature point and loses magnetic conductivity through Steam Heating, under the effect of spring 14, button 11 is upspring, and moving contact 17 separates rapidly with fixed contact 19, thereby the cut-out circuit, kettle 1 quits work and gets final product.

Though described embodiments of the present invention in conjunction with the accompanying drawings; but those skilled in the art can make various distortion or modification within the scope of the appended claims; as long as be no more than the described protection range of claim of the present invention, all should be within protection scope of the present invention.

Claims

1, a kind of magnetic-sensing button type steam switch of electric kettle comprises body (22) and button (11); It is characterized in that: on described body (22), be provided with tube (221), hard holder (13) is installed in tube (221) chamber and in hard holder (13), is provided with a Hard Magnetic (12), outside tube (221), be inserted in spring (14), and be fixed with a soft magnetism (23) in body (22) bottom, Hard Magnetic (12) match with soft magnetism (23) and soft magnetism (23) corresponding with the steam hole (2) on the kettle (1); In button (11), be provided with push rod (111) and outside button (11), be provided with contact (112), button (11) is slidingly matched with tube (221) outer surface, and push rod (111) lower end contacts with Hard Magnetic (12) upper surface, and two ends, button (11) bottom and holder (13) two ends interference close-fitting and fixedly Hard Magnetic (12) firmly; On described body (22), be fixed with the first terminal (21), has second terminal (18) in this first terminal (21) top, between the first terminal (21) and second terminal (18), be provided with circle (20), the first terminal (21), circle (20), second terminal (18) connect by screw rod (15), on second terminal (18), be fixed with shell fragment (16), shell fragment (16) is corresponding with contact (112), be provided with moving contact (17) at shell fragment (16) downside, be provided with fixed contact (19) at the first terminal (21) upside, described moving contact (17) is corresponding with fixed contact (19).

2, magnetic-sensing button type steam switch of electric kettle according to claim 1 is characterized in that: described tube (221) is a cylinder.