CN201556553U

CN201556553U - Button

Info

Publication number: CN201556553U
Application number: CN2009200613965U
Authority: CN
Inventors: 刘旭; 林剑锋
Original assignee: Huizhou Desay SV Automotive Co Ltd
Current assignee: Huizhou Desay SV Automotive Co Ltd
Priority date: 2009-07-25
Filing date: 2009-07-25
Publication date: 2010-08-18
Anticipated expiration: 2019-07-25

Abstract

The utility model relates to a new type button which comprises a base, a press-button and a Dome elastic sheet arranged on the base. A PCB plate is arranged in the base and the concave surface of the Dome elastic sheet is upwards arranged on the PCB plate. Particularly, the PCB plate is provided with an opening; the Dome elastic sheet is arranged in the mounting hole of the PCB plate through a bulge pillar on the center of the convex surface of the Dome elastic sheet; the bottom of the press-button is provided with a groove, the shape of which is wedged with the shape of the edge of the Dome elastic sheet; and the press-button is buckled on the Dome elastic sheet through the groove. The utility model increases no cost on the base of the original button. Through changing the mounting mode of the Dome elastic sheet, the operation route and the operation force scope of the press-button are increased and the operation feel of the press-button is promoted so the user can operate more comfortably. The electric property of the press-button is also promoted.

Description

A kind of button

Technical field

The utility model relates to a kind of electronic devices and components, specifically is meant a kind of button.

Background technology

As shown in Figure 3, in the prior art, button generally comprises button part (botton) and base portion, be provided with semicircle lid type shell fragment (Dome) 2 in base inside, shell fragment 2 crownings upwards are buckled on the pcb board 3 in the button base, and shell fragment 2 edges are as a conductive contact of button, a conductive contact is preset in pcb board 3 corresponding shell fragments 2 centers, and this contact is second conductive contact of button.When exerting oneself pressing button part 1, button 1 compressing shell fragment 2 centers contact contact default on the pcb board 3 downwards, realize that button triggers function, and the Dome shell fragment then relies on resilience force to reset.For this structure in the button, feel when regulating button operation if desired and accuracy, pressing force size etc. can only realize by size and the material properties of adjusting the Dome shell fragment, especially regulate the operating handle aspect, also need make many supplementary structures, complex operation and often cause cost to increase.

The utility model content

The problem that the utility model need solve provides a kind of functional, novel button that operating handle is strong.

Be the problems referred to above that solve, the technical scheme that the utility model is taked is: a kind of button, comprise base, and be installed on button and shell fragment on the base, be provided with wiring board in the base, described shell fragment is concave upright to be installed on the wiring board.

Concrete, perforate on the described wiring board, shell fragment is installed in the installing hole default on the wiring board by the projection on the convex surface center, and described projection is as button first conductive contact; Corresponding shell fragment edge depressed position is established annular conducting wire on the described wiring board, and described annular conducting wire is as second conductive contact.

Described button bottom is provided with the groove that shape and shell fragment edge shape agree with mutually, and button is buckled on the shell fragment by groove.

With respect to prior art, the utility model beneficial effect is: need not increase any cost on the button original base, by the change of structure, button operation stroke, operating physical force scope be increased, increase substantially the operating handle of button, it is more comfortable that the user is operated; Described press-key structure becomes the line contact with the conduction mode of button by a contact simultaneously, and when pushing, the button conducting is more abundant, and the electric performance of corresponding button is more stable.

Description of drawings

Fig. 1 is the utility model example structure cutaway view;

Fig. 2 forms schematic diagram for the utility model structure;

Fig. 3 is that press-key structure is formed schematic diagram in the prior art.

Embodiment

For ease of those skilled in the art will recognize that the utility model is described in further detail below in conjunction with drawings and Examples.

As shown in Figure 1, 2, the utility model comprises button 1, Dome shell fragment 2, pcb board 3, and described pcb board 3 is provided with installing hole 31, and Dome shell fragment 2 convex surface centers are provided with a projection 21, and this projection 21 is a conductive contact of described button.During installation, Dome shell fragment 2 is concave upright, and convex surface is downward, is installed in the installing hole 31 on the pcb board by the projection on the convex surface 21.Dome shell fragment 2 is installed in the button base after pcb board 3 assemblings.

Button 1 bottom is provided with the groove 11 that shape and Dome shell fragment 2 edge shapes agree with mutually, and button 1 is buckled on the Dome shell fragment 2 by groove 11.

The electric property of button described in the utility model is achieved in that on pcb board 3, the one annular conducting wire of agreeing with mutually with Dome shell fragment 2 edges is set along Dome shell fragment 2 depressed position places, and the full annular conducting wire is as second conductive contact of described button.When the operator presses down Dome shell fragment 2 by button 1, the stressed conducting wire that touches downwards on the pcb board 3, Dome shell fragment 2 edges, two conductive contacts of described button realize that by 2 conductings of Dome shell fragment own button triggers function.

Mounting means with respect to button Dome shell fragment in the prior art, conductive contact mode after press-key structure described in the utility model is pressed is contacted by loop line contact or even the face that original central point contact changes in a big way, when pressing, the button conducting is more abundant, and the electric performance of corresponding button is more stable.

Claims

1. a button comprises base, is installed on button (1), shell fragment (2) on the base, is provided with wiring board (3) in the base, it is characterized in that: described shell fragment (2) is concave upright to be installed on the wiring board (3).

2. button according to claim 1 is characterized in that: open installing hole (31) on the described wiring board (3), shell fragment (2) is installed in the installing hole (31) on the wiring board by the projection on the convex surface center (21); Described projection (21) is as button first conductive contact.

3. button according to claim 2 is characterized in that: described wiring board (3) is gone up corresponding shell fragment (2) edge depressed position and is established annular conducting wire, and described annular conducting wire is as second conductive contact.

4. according to each described button in the claim 1～3, it is characterized in that: described button (1) bottom is provided with the groove (11) that shape and shell fragment (2) edge shape agree with mutually, and button (1) is buckled on the shell fragment (2) by groove (11).