CN2369340Y - Improved button - Google Patents

Abstract

The utility model relates to an improved key which is provided with a base plate, conductive film, an elastic element, a bridge and a key cap, wherein two frames of the bridge are in scissor type pin joint, and a pivot shaft of the bridge is pivoted in the pin joint part of the base plate; the part of the conductive film, which corresponds to the pin joint part on the base plate, is provided with an opening through which the pin joint part can penetrate and protrude out, and the part of the conductive film is also provided with a circuit and an electric contact; both ends of the elastic element are respectively and fixedly arranged on the conductive film and the key cap. The utility model is characterized in that one side of the base plate, which is adjacent to the pin joint part, is punched with at least one bumping post; one face of the bumping post, which corresponds to the inlet of the pin joint part, presents a cambered face. When a pivot shaft of the bridge is pivoted with the pin joint part, the bridge can easily slide into the pin joint part, easy assembly can be realized, the pivot shaft can be guaranteed not to be scratched and the frames of the bridge can smoothly move up and down.

Description

Follow-on button

The utility model relates to button, refers in particular to a kind of follow-on button.

The structure of button 20 commonly used as shown in Figure 4 and Figure 5, constitute by base plate 1a, conductive film 2a, flexible member 3a, bridge formation 4a and keycap 5a, bridge formation 4a is articulated mutually with the scissors structure by two framework 41a and 42a to form, two framework 41a and 42a are articulated in the set articulated section 11a of base plate 1a, and the side of the articulated section 11a of base plate 1a becomes bumping post 12a to withstand pivot 411a on the framework 41a by middle place's punching press holes; Articulated section 11a is that base plate 1a upwards strikes out pivot 411a and the 421a embedding of " " shape for two pivot framves, its major defect is: because bumping post 12a is upturned with punching press holes technology, has sharp comer, when so pivot 411a embeds articulated section 11a pivot joint, the columned pivot 411a of the easy scratch of this sharp comer causes the two framework 41a of bridge formation 4a and 42a to have some setbacks when moving up and down or fastens and can not move.

The purpose of this utility model is to provide a kind of follow-on button, the articulated section that is respectively equipped with some on base plate and keycap supplies to build bridge up and down, and the pivot at two ends articulates respectively, one side direction upper punch is established at least one bumping post in the articulated section of base plate, the one side of the corresponding articulated section of this bumping post is circular-arc, overcome the drawback of prior art, reach pivot joint and firmly be difficult for deviating from, it is smooth and easy and can be by the purpose of scratch that pivot embeds the articulated section.

The purpose of this utility model is achieved in that a kind of follow-on button, be provided with base plate, conductive film, flexible member, bridge formation and keycap, two frameworks of building bridge are scissors and articulate, its pivot is articulated in the articulated section of base plate, articulated section on the conductive film on the corresponding base plate is provided with perforate and passes protruding dew for the articulated section, also is provided with circuit and electrical contact; The two ends of flexible member are installed in respectively on conductive film and the keycap, it is characterized in that a side blow of contiguous articulated section on this base plate extrudes at least one bumping post, and the inlet of the corresponding articulated section of this bumping post simultaneously is arc surface.

This bridge formation is the scissors pivot joint by first framework and second framework and forms, and the two ends of this two framework are respectively equipped with pivot difference buckle within the articulated section of base plate and keycap; This pivot is cylindric.

Major advantage of the present utility model is: because the one side of the corresponding articulated section of bumping post is circular-arc, when making the pivot of bridge formation be articulated in the articulated section, can slip into easily, make easy to assemblyly, and guarantee pivot not by scratch, the framework that helps building bridge moves up and down smooth and easy.

Further specify below in conjunction with preferred embodiment and accompanying drawing.

Fig. 1 is a combination cross-sectional schematic of the present utility model.

Fig. 2 is a decomposing state schematic diagram of the present utility model.

Fig. 3 is the A portion enlarged diagram of Fig. 2.

Fig. 4 is the combination cross-sectional schematic of common structure.

Fig. 5 is the decomposing state schematic diagram of common structure.

Consult Fig. 1-Fig. 3, button 10 of the present utility model is provided with base plate 1, conductive film 2, flexible member 3, bridge formation 4 and keycap 5, this bridge formation 4 is scissors by first framework 41 and second framework 42 and articulates and to form, this two framework 41 and 42 two ends be respectively equipped with pivot 411 and 421 respectively buckles in the articulated section 11 and 51 of base plate 1 and keycap 5; Articulated section 11 on the conductive film 2 on the corresponding base plate 1 is provided with perforate 21 and passes protruding dew for articulated section 11, also is provided with circuit 22 and electrical contact 23; The two ends of flexible member 3 are installed in respectively on conductive film 2 and the keycap 5.When keycap 5 is pressed, drive flexible member 3 to pressing down, make conduction projections 31 in the flexible member 3 conflict electrical contact 23 on the conductive film 2 and turning circuit.

Articulated section 11 on the base plate 1 upwards punching press is in the articulated section 11 of plate 111 for pivot 411 these plates 111 of embedding of the first pivot frame 41 of " " shape, a side blow of contiguous articulated section 11 extrudes two bumping posts 12 separated by a distance on base plate 1, and this bumping post 12 forms arc surface 121 in the face of 11 porch, articulated section; In the articulated section 51 of pivot 421 buckles on keycap 5 of second framework 42; The two ends of flexible member 3 are installed in respectively between keycap 5 and the conductive film 2.When pushing keycap 5 downwards, bridge formation 4 is made scissors movement, and the conduction projections 31 in the compression elastic element 3 touch the electrical contact 23 on the conductive film 2, forms the conducting loop.

Claims (3)

1, a kind of follow-on button, be provided with base plate, conductive film, flexible member, bridge formation and keycap, two frameworks of building bridge are scissors and articulate, its pivot is articulated in the articulated section of base plate, articulated section on the conductive film on the corresponding base plate is provided with perforate and passes protruding dew for the articulated section, also is provided with circuit and electrical contact; The two ends of flexible member are installed in respectively on conductive film and the keycap, it is characterized in that a side blow of contiguous articulated section on this base plate extrudes at least one bumping post, and the inlet of the corresponding articulated section of this bumping post simultaneously is arc surface.

2, button as claimed in claim 1 is characterized in that: this bridge formation is the scissors pivot joint by first framework and second framework and forms, and the two ends of this two framework are respectively equipped with pivot difference buckle within the articulated section of base plate and keycap.

3, button as claimed in claim 1 is characterized in that: this pivot is cylindric.

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