CN201229863Y

CN201229863Y - Microswitch having secondary action

Info

Publication number: CN201229863Y
Application number: CNU200820044597XU
Authority: CN
Inventors: 颜陶
Original assignee: Individual
Current assignee: FOSHAN CHUANDONG THERMAL MAGNETIC Co Ltd
Priority date: 2008-03-07
Filing date: 2008-03-07
Publication date: 2009-04-29
Anticipated expiration: 2018-03-07

Abstract

The utility model discloses a micro switch with secondary action; the upper part of a main body is vertically provided with an internally and externally communicated movable push rod, the inside of a side is vertically provided with a movable connecting rod, and the inside is provided with an automatic on and off mechanism which controls the on and the off of a power supply with the movable push rod and the movable connecting rod; the upper end and the lower end of the movable connecting rod extend outside the main body; a coupled bouncing strip is arranged between the upper end of the movable connecting and the upper end of the movable push rod; the main body is provided with a protruding supporting point to the opposite of the middle part of the bouncing strip; the micro switch has the advantages of simple structure, high control precision, long service life, wide scope of application and the like.

Description

A kind of sensitive switch with secondary action

Technical field

The utility model relates to a kind of sensitive switch, refers in particular to a kind of sensitive switch with secondary action that is used for electrical equipment control.

Background technology

The used sensitive switch of existing electrical equipment is because bindiny mechanism's link is too much, and each part dimension deviation accumulates, factors such as packaging technology mismate, or user misoperation in addition, Control Failure easily.Be applied in phenomenons such as the living rice of regular meeting's appearance often, half-cooked rice, burnt meal in the electric cooker temperature limit switch, even burn out the tragedy that heating board causes fire.

Summary of the invention

The purpose of this utility model aims to provide a kind of simple for assembly process, easy to use, safe and reliable a kind of sensitive switch with secondary action.

The purpose of this utility model is achieved in that a kind of sensitive switch with secondary action, comprise that body top vertically is provided with inside and outside movable push rod, the one side inside that is communicated with and vertically is provided with movable rod, inner auto switching mechanism by movable push rod and movable rod control on/off, it is characterized in that: described movable rod upper and lower side all extends to external, be provided with the spring sheet of interlock between its upper end and the movable push rod upper end, in the middle part of the spring sheet right body be provided with the fulcrum of evagination.

The above-mentioned a kind of described auto switching of sensitive switch mechanism with secondary action comprises fixed mount, static contact, movable contact spring, shell fragment and inserted sheet, described fixed mount and static contact outer end extend to this respectively and externally are connected the power supply input, output, described movable contact spring is horizontally set between static contact and the movable rod, be provided with corresponding contact between the upside of one end and the inner of static contact, the movable buckle of the other end and fixed mount also extends and sets up on movable rod, the middle part crimping of described push rod lower end and movable contact spring, described shell fragment be located in the downside between movable contact spring and the fixed mount, described inserted sheet be located in the upside between fixed mount and the movable contact spring, and its bottom extends between movable contact spring and the push rod.

The above-mentioned a kind of described auto switching of sensitive switch mechanism with secondary action also comprises the insulation signal support chip of drawing, and its inner is arranged on the bottom relative with static contact, and and the movable contact spring downside between be provided with corresponding contact.

Above-mentioned a kind of side with described body of sensitive switch of secondary action also is provided with foot rest.

After the utility model adopts said structure,, control connecting and disconnecting by two points of force application up and down by spring sheet interlock movable rod and movable push rod, reach the function of secondary action, the electrical structure assembling is simplified, reduced cost, reach the purpose of fully automatic working.The auto switching mechanism that is made of fixed mount, static contact, movable contact spring, shell fragment and inserted sheet between interlock movable rod and the movable push rod has autobalance reverse action break-make linkage function, thereby realizes the break-make control to various appliance circuits.Has simple in structure, advantage such as control precision is high, long service life, the scope of application are wide.

The utility model is specially adapted to use in the electric cooker full-automatic temperature limiting center switch.

Description of drawings

Below in conjunction with the embodiment in the accompanying drawing the utility model is described in further detail, but does not constitute any restriction of the present utility model.

Fig. 1 is a cross-sectional view of the present utility model;

Fig. 2 is a perspective view of the present utility model;

Fig. 3 is a disassembly and assembly structure schematic diagram of the present utility model;

Fig. 4 is a not working state schematic representation of the utility model;

Fig. 5 is the utility model on-state schematic diagram;

Fig. 6 is the utility model off-state schematic diagram;

Fig. 7 is wherein a kind of structural representation of specific embodiment of the utility model.

Among the figure: 1 is body, and 2 is movable push rod, and 3 is movable rod, 4 are the spring sheet, and 5 is fixed mount, and 6 is static contact, 7 is movable contact spring, and 8 is shell fragment, and 9 is inserted sheet, 10 is support chip, and 11 is foot rest, and 7a, 6a, 10a, 7b are the contact, 12 is cuvette, and 13 is inner spring, and 14 is mug, 15 is Hard Magnetic, and 16 is soft magnetism, and 17 is outer spring.

Embodiment

Consult Fig. 1, Fig. 2 and shown in Figure 3, a kind of sensitive switch of the present utility model with secondary action, comprise that body 1 top vertically is provided with inside and outside movable push rod 2, the one side inside that is communicated with and vertically is provided with movable rod 3, inner auto switching mechanism by movable push rod 2 and movable rod 3 control on/offs, movable rod 3 upper and lower sides all extend to outside the body 1, be provided with the spring sheet 4 of interlock between its upper end and movable push rod 2 upper ends, sheet 4 middle parts of bouncing right body 1 be provided with the fulcrum 1a of evagination; Auto switching mechanism comprises fixed mount 5, static contact 6, movable contact spring 7, shell fragment 8 and inserted sheet 9, fixed mount 5 extends to body 1 respectively with static contact 6 outer ends and is connected the power supply input outward, output, described movable contact spring 7 is horizontally set between static contact 6 and the movable rod 3, be provided with corresponding contact 7a between the inner of the upside of one end and

static contact

6,6a, the other end and fixed mount 5 movable buckles also extend and set up on movable rod 3, the middle part crimping of movable push rod 2 lower ends and movable contact spring 7, shell fragment 8 be located in the downside between movable contact spring 7 and the fixed mount 5, inserted sheet 8 be located in the upside between fixed mount 5 and the movable contact spring 7, and its bottom extends between movable contact spring 7 and the movable push rod 2; Auto switching mechanism also comprises the insulation signal support chip 10 of drawing, and its inner is arranged on the bottom relative with static contact 6, and and movable contact spring 7 downsides between be provided with

corresponding contact

10a, 7b; The side of body 1 also is provided with foot rest 11.

Operation principle of the present utility model, consult shown in Figure 4ly, the utility model is operating state not, and movable contact spring 7 hangs between static contact 6 and the support chip 10 by shell fragment 8 and is the horizontal equilibrium state, between contact 7a, the 6a between the middle part of, movable push rod 2 lower surfaces and movable contact spring 7 from; Consult shown in Figure 5, the utility model connected state, movable rod 3 lower ends are moved upward by the F1 upward pressure, the movable contact spring 7 that drive is attached thereto moves upward, movable contact spring 7 touches mutually with contact 7a, the 6a of static contact 6, circuit is connected, and offsets between the middle part of wherein movable push rod 2 maintenance original position, its lower surface and movable contact springs 7; Consult shown in Figure 6, the utility model off-state, when keeping movable rod 3 lower ends to be subjected to the F1 upward force, movable push rod 2 is moved by the F2 downward force, the movable contact spring 7 that extruding offsets divides contact 7a, the 6a of movable contact spring 7 and static contact 6 and opens, circuit disconnects.

Consult shown in Figure 7ly, the utility model is contained in the full-automatic center switch of electric cooker when inner, links to each other with cuvette 12 in the center switch during use, and their outsides are with inner spring 13, and inner spring 13 is with mug 14 outward, between body 1 and the mug 14 space is arranged; Cuvette is equipped with Hard Magnetic 15 and soft magnetism 16 for 12 li, and outer spring 17 is housed between them, and initial Hard Magnetic 15 is inhaled mutually with soft magnetism 16, and inner spring 13 all is in compressive state.During work, at first under the action of gravity of pot, body 1 moves downward, and outer spring 17 is in compressive state, and following movable rod 3 contacts with mug 14 bottoms, produce directed force F 1 upwards, movable rod 3 is moved upward, drive the movable contact spring 7 that is attached thereto and move upward, movable contact spring 7 touches mutually with contact 7a, the 6a of static contact 6, circuit is connected, and electric cooker is started working; After work through after a while heated up, soft magnetism 16 reached critical temperature, can not be attracted outer spring 17 elongations by Hard Magnetic 15, produce directed force F 2, the movable push rod 2 above promoting moves downward, extruding movable contact spring 7, movable contact spring 7 and static contact 6 are separated, and circuit disconnects, and electric cooker quits work.

Claims

1. sensitive switch with secondary action, comprise that body (1) top vertically is provided with inside and outside movable push rod (2), the one side inside that is communicated with and vertically is provided with movable rod (3), inner auto switching mechanism by movable push rod (2) and movable rod (3) control on/off, it is characterized in that: described movable rod (3) upper and lower side all extends to outside the body (1), be provided with the spring sheet (4) of interlock between its upper end and movable push rod (2) upper end, in the middle part of the spring sheet (4) right body (1) be provided with the fulcrum (1a) of evagination.

2. a kind of sensitive switch according to claim 1 with secondary action, it is characterized in that: described auto switching mechanism comprises fixed mount (5), static contact (6), movable contact spring (7), shell fragment (8) and inserted sheet (9), described fixed mount (5) extends to body (1) respectively with static contact (6) outer end and is connected the power supply input outward, output, described movable contact spring (7) is horizontally set between static contact (6) and the movable rod (3), be provided with corresponding contact (7a between the inner of the upside of one end and static contact (6), 6a), the movable buckle of the other end and fixed mount (5) also extends and sets up on movable rod (3), the middle part crimping of described movable push rod (2) lower end and movable contact spring (7), described shell fragment (8) be located in the downside between movable contact spring (7) and the fixed mount (5), described inserted sheet (8) be located in the upside between fixed mount (5) and the movable contact spring (7), and its bottom extends between movable contact spring (7) and the movable push rod (2).

3. a kind of sensitive switch according to claim 1 with secondary action, it is characterized in that: described auto switching mechanism also comprises the support chip (10) that the insulation signal is drawn, its the inner is arranged on and the relative bottom of static contact (6), and and movable contact spring (7) downside between be provided with corresponding contact (10a, 7b).

4. a kind of sensitive switch with secondary action according to claim 1 is characterized in that: the side of described body (1) also is provided with foot rest (11).