CN201327785Y - Microswitch - Google Patents

Abstract

The utility model relates to an electric switch, and belongs to a microswitch, comprising a base, a common pin, a normally-close pin, a normally-open pin, a keystoke and a switching mechanism, wherein the common pin is embedded on the base; when the keystroke is pressed, the common pin contacting with the normally-close pin is switched to be contacted with the normally-open pin; the switching mechanism comprises an elastic slice, and transversal grooves are respectively arranged on the front surface and the back surface at the upper part of the common pin in a staggered way from top to bottom; two stripe-shaped through holes which are symmetrically arranged on the elastic slice along the length direction divide the elastic slice into a left slice, a middle slice and a right slice in sequence, wherein the left slice and the right slice are respectively and transversally cut off to be divided into a left-upper slice, a left-lower slice, a right-upper slice and a right-lower slice, which are respectively clamped in the transversal grooves and arch up upwards. The elastic slice arches up upwards, so that the elastic slice and the common pin always keep a compressing state when the keystroke is pressed, and the conductivity is stable; and in addition, the elastic slice is directly clamped on the common pin, thereby reducing the number of parts and the assembling process, and saving cost.

Description

Sensitive switch

Technical field

The utility model relates to a kind of appliance switch, particularly a kind of sensitive switch that is applicable to that electrically powered machine, automobile, household electrical appliance are especially used on the microwave oven.

Background technology

As shown in Figure 1, existing sensitive switch is assembled and is fixed on the public pin by brace 21, shell fragment 22, action contact frame 23.This structure parts are more, complex structure, and assembling is inconvenient, and in the course of action of button, the auxiliary section branch of these several parts produces the change of contact-making surface, electric conductivity instability.

The utility model content

Technical problem to be solved in the utility model is to solve comparatively complexity of microswitch structure, conduction property problem of unstable.

In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted provides a kind of sensitive switch, comprise pedestal, be inlaid in the common pin on the pedestal, normally closed pin, often open pin, button and switching mechanism, described button passes pedestal and switching mechanism offsets, and when button is pressed common pin from switching to and often open pin and contact with normally closed pin contact condition, it is characterized in that described switching mechanism comprises a shell fragment, described public pin top is the L type, wherein L type vertical edge has a U-shaped groove along center line, have transverse concave groove with interlacing up and down respectively on the front and rear surfaces of groove left and right sides wall, have two strip through-holes on the described shell fragment along its length symmetrically it is partitioned into a left side successively, in, right three, wherein left, on the right sheet respectively transversely truncation be divided into upper left, lower-left and upper right, four of bottom rights, middle sheet in the shell fragment places in the U-shaped groove on the public pin, and is upper left, the lower-left, upper right, the bottom right sheet is stuck in the transverse concave groove on the public pin and upwards arches upward.

In the such scheme, the transverse concave groove on the described public pin is the V-type groove.

The utility model, when button is pressed, because shell fragment upwards arches upward, under the effect of its elastic force, can guarantee the state that presses of shell fragment and public pin all the time, electric conductivity is stable, in addition, owing to single shell fragment directly is stuck on the public pin,, provides cost savings greatly so reduced amount of parts and assembly process.

Description of drawings

Fig. 1 is existing sensitive switch plane structure chart;

Fig. 2 is the utility model plane structure chart;

Fig. 3 is the utility model three-dimensional structure diagram;

Fig. 4 is the utility model common pin schematic diagram;

Fig. 5 is the utility model shell fragment schematic diagram;

Fig. 6 is the new assembling of this a practicality schematic diagram.

Embodiment

Below in conjunction with accompanying drawing the utility model is made detailed explanation.

As Fig. 2, Fig. 3 and shown in Figure 6, the utility model comprises pedestal 1 and the loam cake 2 that fastens with it, common pin 6, normally closed pin 3 and Chang Kai pin 4 are inlaid in respectively on the pedestal 1, button 9 passes pedestal 1 and offsets with switching mechanism, and when button 9 is pressed common pin 6 from switching to and often open pin 4 and contact with normally closed pin 3 contact conditions.

Described switching mechanism comprises a shell fragment 7, as Fig. 4, shown in Figure 5, the top of public pin 6 is the L type, wherein L type vertical edge has a U-shaped groove along center line, have horizontal V-type groove 61 with interlacing up and down respectively on the front and rear surfaces of groove left and right sides wall, have two strip through-holes 71 on the described shell fragment 7 along its length symmetrically it is partitioned into a left side successively, in, right three, wherein left, on the right sheet respectively transversely truncation be divided into upper left 76, lower-left 75 and upper right 72,73 4 of bottom rights, middle sheet 74 in the shell fragment places in the U-shaped groove on the public pin 6, and upper left 76, lower-left 75, upper right 72,73 of bottom rights are stuck in the transverse concave groove 61 on the public pin 6 and upwards arch upward.

Button 9, often open, draw-in groove that assembly that normally closed pin 3,4 and shell fragment 7 and public pin 6 are constituted places pedestal 1, the bottom that makes the end of shell fragment 7 run into button 9, at this moment shell fragment 7 produces nature and is bent upwards distortion, make the contact 5 of shell fragment 7 front ends press the contact 5 of normally closed pin 3, spring 8 be located at shell fragment 7 ends below be used for resetting of button 9, when pressing button 9 downwards, the contact 5 of often opening pin 4 will be touched in the contact 5 of shell fragment 7 front ends, realize the switching of sensitive switch.The utility model, because the shell fragment that is stuck on the public pin 6 produces the flexural deformation that nature makes progress, produce tension force up or down, action with button 9 applies contact pressure to the contact of normally closed pin and the contact of Chang Kai pin respectively, keeps stable contact condition and cross electric energy power in operating process.

The utility model is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technical scheme, all fall within the protection range of the present utility model.

Claims (2)

1, sensitive switch, comprise pedestal, be inlaid in the common pin on the pedestal, normally closed pin, often open pin, button and switching mechanism, described button passes pedestal and switching mechanism offsets, and when button is pressed common pin from switching to and often open pin and contact with normally closed pin contact condition, it is characterized in that described switching mechanism comprises a shell fragment, described public pin top is the L type, wherein L type vertical edge has a U-shaped groove along center line, have transverse concave groove with interlacing up and down respectively on the front and rear surfaces of groove left and right sides wall, have two strip through-holes on the described shell fragment along its length symmetrically it is partitioned into a left side successively, in, right three, wherein left, on the right sheet respectively transversely truncation be divided into upper left, lower-left and upper right, four of bottom rights, middle sheet in the shell fragment places in the U-shaped groove on the public pin, and is upper left, the lower-left, upper right, the bottom right sheet is stuck in the transverse concave groove on the public pin and upwards arches upward.

2, sensitive switch as claimed in claim 1 is characterized in that the transverse concave groove on the described public pin is the V-type groove.

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