CN202695227U

CN202695227U - Waterproof key switch

Info

Publication number: CN202695227U
Application number: CN 201220198325
Authority: CN
Inventors: 孙小平
Original assignee: Grand Key Seiko Mould Ltd Of Hefei City
Current assignee: Grand Key Seiko Mould Ltd Of Hefei City
Priority date: 2012-05-04
Filing date: 2012-05-04
Publication date: 2013-01-23
Anticipated expiration: 2022-05-04

Abstract

The utility model relates to a key switch, and in particular to a waterproof key switch. The waterproof key switch comprises a base with a concave cavity, an annular upper cover and a button, wherein the upper part of the button passes through the gap part of the upper cover, the bottom part of the button is bulged downward to form a push handle, a contact assembly is arranged on the concave cavity surface of the base, an arched metal reed is arranged above the contact assembly; annular equal-height sealing bars are arranged at the connecting position of the base and the upper cover, a pre-pressed rubber cushion is arranged between the equal-height sealing bars and the upper cover, the concave cavity of the base is completely sealed, the push handle is movably connected with the pre-pressed rubber cushion, the reed is supported against the bottom part of the push handle in a manner that the pre-pressed rubber cushion is separated between the arch face of the reed, and the upper cover is fixedly riveted with the base. The waterproof key switch has high waterproof performance, the protection class is above IP67, and the waterproof key switch even totally passes the submerging test under the room temperature, 10cm under water and for more than 96 hours.

Description

A kind of waterproof key switch

Technical field

The utility model relates to a kind of key switch, definite says a kind of waterproof key switch.

Background technology

In the prior art, key switch commonly used mainly comprises pedestal, be positioned at the button of pedestal top cavity, and the terminal that is electrically connected with control unit of drawing from base bottom, described button and pedestal cavity formation are slidingly connected, the button bottom is provided with thimble, the pocket surfaces of pedestal is provided with projection, the contact assembly that is electrically connected with terminal, two the first contacts that described contact assembly is included in the diagonal angle setting of pedestal pocket surfaces reach corresponding to the second contact of being located at below the thimble of button bottom in the pedestal cavity, be provided with the arch reed between pedestal pocket surfaces and the button bottom, the two ends of described reed contact with first contact on both sides respectively, reed middle part initial condition to the thimble that is butted on the button bottom on.During work, work as Push switch, button in the pedestal cavity to lower slippage, this moment, the thimble compressing reed middle part arcuate surface of button bottom sank, contact with the second contact of its below, be communicated with by reed thereby make between the first contact and the second contact, at this moment switch conduction; And after trip switch, reed resets under the elastic force effect, bullet on the button, and reed middle part and the second contact separation, switch disconnects.

In the above-mentioned key switch, button and pedestal cavity are slidingly matched, thereby between the sidewall of button sidewall and pedestal cavity, certainly exist the gap, so that the contact assembly of pocket surfaces communicates with the external world, therefore, when the touch-switch of this structure is applied in the moist environment, when perhaps being applied to the electrical equipment that contacts with water such as washing machine, airborne steam or water droplet can enter cavity along sidewall spacers, touch contact assembly, make it that corrosion occur, connection between the influencing contactor causes producing the phenomenons such as loose contact or generation electric spark, also may cause the short circuit between the contact.Therefore this switch is in the higher occasion of some instructions for uses, as at some household electrical appliances, such as use occasions such as washing machine, microwave oven, soy bean milk making machine, be easy to cause switch failure into the ash water inlet, cause whole product not use, do not reach practical effect, perhaps affect useful life.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of waterproof key switch, so that this key switch switch has high-grade functions of waterproof and dustproof, to improve its useful life.

The technical solution of the utility model is: a kind of waterproof key switch, comprise a pedestal with cavity, an annular loam cake, and a button formation, described button top passes from described loam cake vacancy, and this button bottom convexes to form downwards and pushes away handle; The pocket surfaces of described pedestal is provided with contact assembly, and described contact assembly top is provided with the arch metal spring leaf; The position that described pedestal is connected with loam cake is provided with annular contour sealed muscle, is provided with the precompressed rubber blanket between described contour sealed muscle and the described loam cake, with described pedestal cavity complete closed; Describedly push away handle and the precompressed rubber blanket is actively coupled, the arch face of described reed offsets across described precompressed rubber blanket and the described handle bottom that pushes away; Described loam cake is fixedly connected with by riveting method with pedestal.

Principle of the present utility model is: be provided with annular contour sealed muscle and precompressed rubber blanket at pedestal and loam cake link position, described pedestal cavity and outside are separated fully, thereby cut off on the whole contact assembly and extraneous being communicated with, reached the purpose of water proof and dust proof; Adopt again simultaneously by riveting method loam cake to be connected with pedestal to connect, make loam cake extruding precompressed rubber blanket, itself and annular contour sealed muscle are closely cooperated, reach high classification of waterproof.And light-emitting diode is embedded in button inside, and compact conformation is reliability and durability.

The utility model has the advantage of: this water proof switch is a kind of switch with high water resistance, and its profile is very little, can accomplish 6x6x5mm, and degree of protection reaches IP67, in addition at normal temperatures, depth of water 10cm, water test is all passed through more than 96 hours.

Description of drawings

The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is structural representation of the present utility model.

Embodiment

Referring to Fig. 1, a kind of waterproof key switch comprises a pedestal 1 with cavity, an annular loam cake 5, and a button 6 consists of.Loam cake 5 is made of metal, and the formation boss is upwards drawn high in the centre, has through hole in the middle of the boss, and button 6 tops pass from loam cake 5 through holes.

Button 6 bottoms convex to form downwards and push away handle; The pocket surfaces of pedestal 1 is provided with contact assembly 2, and contact assembly 2 tops are provided with arch metal spring leaf 3; The position that pedestal 1 is connected with loam cake 5 is provided with annular contour sealed muscle 7, is provided with precompressed rubber blanket 4 between contour sealed muscle 7 and the loam cake 5, with the cavity complete closed of pedestal 1; Push away handle and precompressed rubber blanket 4 is actively coupled, the arch face of reed 3 across precompressed rubber blanket 4 with push away the handle bottom and offset; Loam cake 5 and pedestal 1 are fixedly connected with by riveting method.

In the present embodiment, loam cake 5 is fixing by the riveting column and the riveted joint of pedestal 1 upper surface that are evenly distributed on its bottom.

When pressing button downwards, because rubber blanket 4 has elasticity, the handle that pushes away of button bottom can actuating spring 3 actions, make contact assembly 2; Bleed off the active force to button, because reed 3 domes have restoring force, button returns to again initial position, finishes the one-period action.

This water proof switch is a kind of switch with high water resistance, and after tested, degree of protection reaches IP67, (IP6X: product is taken out negative pressure, places in the sand and dust case, and inspections of uncapping, genus dirt is close, can not have dust to enter to be judged to be to meet standard-required; IPX7: the short time immersion, be unlikely to reach harmful degree through official hour rear casing immersion amount in the water of immersion authorized pressure, be positioned in the caisson, 1 meter of the general degree of depth, test duration is 30min); Even can reach higher performance (normal temperature, depth of water 10cm, water test more than 96 hours, test all by), far away surpassing has like product now.

Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that in the situation that do not break away from principle of the present utility model and spirit can be carried out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is limited by claims and equivalent thereof.

Claims

1. a waterproof key switch comprises a pedestal with cavity, an annular loam cake, and a button formation, and described button top passes from described loam cake vacancy, and this button bottom convexes to form downwards and pushes away handle; The pocket surfaces of described pedestal is provided with contact assembly, and described contact assembly top is provided with the arch metal spring leaf; It is characterized in that: the position that described pedestal is connected with loam cake is provided with annular contour sealed muscle, is provided with the precompressed rubber blanket between described contour sealed muscle and the described loam cake, with described pedestal cavity complete closed; Describedly push away handle and the precompressed rubber blanket is actively coupled, the arch face of described reed offsets across described precompressed rubber blanket and the described handle bottom that pushes away; Described loam cake is fixedly connected with by riveting method with pedestal.

2. described a kind of waterproof key switch according to claim 1, it is characterized in that: described loam cake is fixing by the riveting column and the riveted joint of described pedestal upper surface that are evenly distributed on its bottom.

3. described a kind of waterproof key switch according to claim 1, it is characterized in that: described loam cake is made of metal, and upwards draws high formation boss in the middle of it, has through hole in the middle of the described boss, and described button top passes from described loam cake through hole.