CN201036208Y

CN201036208Y - Pushbutton switch

Info

Publication number: CN201036208Y
Application number: CNU2007200354637U
Authority: CN
Inventors: 曹武民; 仇文奎
Original assignee: 仇文奎
Current assignee: Southeast electronic Limited by Share Ltd
Priority date: 2007-03-14
Filing date: 2007-03-14
Publication date: 2008-03-12
Anticipated expiration: 2017-03-14

Abstract

The utility model relates to a pushbutton switch applied to household electric appliances such as refrigerators, washing machines, baking ovens, etc. The pushbutton switch comprises a normally opened terminal, a normally closed terminal, a cover, an upper pressure spring, a lower pressure spring, a movable piece, a contactor, a press handle, a base seat and a splint, wherein the inner side of the base seat is provided with, along the axial direction, a guide slot which matches with the movable piece and forms the slide cooperation. The utility model arranges the guide slot which matches with the movable piece and forms the slide cooperation along the axial direction at the inner side of the base seat, rendering the movable piece with guidance in upward and downward slides, thereby guaranteeing the contact reliability thereof with the normally opened terminal and the normally closed terminal; meanwhile, the upper and the lower pressure springs are respectively arranged on the press handle, thereby ensuring the uniformity and steadiness of the movable piece in axial movements.

Description

A kind of push-button switch

Technical field

The utility model relates to a kind of pressure door switch of family electrical equipment, particularly a kind of push-button switch that uses on household electrical appliance such as refrigerator, washing machine or baking oven.

Background technology

Chinese patent notification number CN2689435Y discloses a kind of pressure door switch structure, comprises housing (pedestal) and presses sincere (handle), and by the sincere shape of falling T that is, supporting handle is exposed at the through hole of housing upper end outward, is provided with a compression spring by sincere lower end; Be provided with a pair of contact terminal (Chang Kaiduan), a pair of contact terminal (normally closed terminal) and upper and lower contact terminal and the corresponding contact chip (operation strip) down gone up in the housing, each is corresponding with contact chip for upper and lower contact terminal, also is provided with the compression spring between contact chip and the housing inner chamber upper end; This contact chip is placed on the supporting handle by circular hole that is provided with in the middle of it and is slidingly matched with it and places between contact terminal and the following contact terminal, each is a pair of for upper and lower contact terminal, contact terminal symmetry on two, two times contact terminal symmetries, upper and lower contact terminal is interspersed.The contact terminal end all is the  shape, and bottom surface, last contact terminal end is provided with the contact, and following contact terminal end upper surface is provided with the contact.Above-mentioned utility model has upper and lower contact terminal, the switch contact reliability has improved, just be set in simply by on sincere (handle) but be positioned at by the contact chip (operation strip) on sincere (handle), and it is contactless between the housing (pedestal), therefore contact chip (operation strip) does not possess guidance quality, in the upper and lower sliding process of contact chip, deflect easily, cause contact with contact terminal bad; Two upper and lower compression spring location wherein are bad simultaneously, and therefore uniformity and the stationarity in axial motion is not enough.

Summary of the invention

The purpose of this utility model is at not enough defective of the prior art, and the push-button switch of a kind of switch contact reliability height, working stability is provided.

For achieving the above object, the utility model adopts a kind of push-button switch, comprise Chang Kaiduan, normally closed terminal, lid, compression spring, following stage clip, operation strip, contact, handle, pedestal, clamping plate, the gathering sill that the pedestal inboard is provided with vertically and operation strip is suitable and formation is slidingly matched.

It is X type groove that this practicality further is set to the gathering sill cross section, and operation strip shape relative set becomes the X type.

The upper surface that this practicality further is set to handle forms the spring base that cylindrical projection constitutes compression spring, and following stage clip is set on the cylinder of handle, and its two ends are pressed on respectively on operation strip and the pedestal.

The utility model is by providing a kind of push-button switch, be provided with vertically and operation strip gathering sill suitable and that formation is slidingly matched in the pedestal inboard, make operation strip in upper and lower slip, have guidance quality, guarantee the contact reliability of itself and Chang Kaiduan and normally closed terminal, compression spring, following stage clip are separately positioned on the handle simultaneously, guarantee uniformity and the stationarity of operation strip in axial motion.

Description of drawings

Fig. 1 is the utility model example structure schematic diagram.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the B-B cutaway view of Fig. 2.

Fig. 4 is the C-C cutaway view of Fig. 2.

Embodiment

As Fig. 1,2,3, shown in 4, this practical specific embodiment is a kind of push-button switch, this push-button switch is by normal beginning 1, normally closed terminal 2, lid, compression spring 3, following stage clip 4, operation strip 5, contact 6, handle 7, pedestal 8, parts such as clamping plate are formed, wherein pedestal 8 is tubbiness, one end is provided with opening, lid is arranged on the opening part of pedestal 8, a pair of Chang Kaiduan 1 and a pair of normally closed terminal 2 are positioned on pedestal 8 internal chamber walls vertically, Chang Kaiduan 1 and normally closed terminal 2 are crisscross arranged, both leading-out terminals are positioned at outside the pedestal 8, the handle 7 that is shaped as the T type is arranged on the other end through hole of pedestal 8 vertically, its tail end is positioned at the through hole outside on the pedestal 8, form the spring base that cylindrical projection 71 constitutes compression spring 3 in the upper surface of handle 7, compression spring 3 upper ends are pressed on the lower end of lid, compression spring 3 lower ends are pressed on the spring base that forms on the handle 7, pedestal 8 inboards are provided with and operation strip 5 gathering sills 81 suitable and that formation is slidingly matched vertically, gathering sill 81 cross sections are X type groove, operation strip 5 shape relative set become the X type, form circular hole in the middle of the operation strip 5, and be set on the cylinder 72 of handle 7, four end points of operation strip 5 are provided with and Chang Kaiduan 1 and normally closed terminal 2 corresponding contacts, be positioned at the upper surface of operation strip 5 with Chang Kaiduan 1 corresponding contact, and be symmetrical arranged; Be positioned at the lower surface of operation strip 5 with normally closed terminal 1 corresponding contact, and be symmetrical arranged.Following stage clip 4 is set on the cylinder 72 of handle 7, and its two ends are pressed on respectively on the lower surface and pedestal 8 inboards of operation strip 5.

Gathering sill 81 cross sections in the above-mentioned enforcement are X type groove, and operation strip 5 shapes are arranged to the X type, and gathering sill 81 and operation strip also can be other shapes in fact, as long as the shape of gathering sill and operation strip is suitable.

Push-button switch of the present utility model, be provided with vertically and operation strip 5 gathering sills 81 suitable and that formation is slidingly matched in pedestal 8 inboards, make operation strip 5 in upper and lower slip, have guidance quality, guarantee the contact reliability of itself and Chang Kaiduan 1 and normally closed terminal 2, compression spring 3, following stage clip 4 are separately positioned on the handle 7 simultaneously, guarantee uniformity and the stationarity of operation strip 5 in axial motion.

Claims

1. push-button switch, comprise Chang Kaiduan (1), normally closed terminal (2), lid, compression spring (3), following stage clip (4), operation strip (5), contact (6), handle (7), pedestal (8), clamping plate, it is characterized in that: pedestal (8) inboard is provided with and operation strip (5) gathering sill (81) suitable and that formation is slidingly matched vertically.

2. push-button switch according to claim 1 is characterized in that: described gathering sill (81) cross section is an X type groove, and operation strip (5) shape relative set becomes the X type.

3. push-button switch according to claim 1 and 2, it is characterized in that: the upper surface of described handle (7) forms the spring base that cylindrical projection (71) constitutes compression spring (3), following stage clip (4) is set on the cylinder (72) of handle (7), and its two ends are pressed on respectively on operation strip (5) and the pedestal (8).