CN101131525B - Two-stage pressing structure - Google Patents

Abstract

A two-stage pressing structure, comprising: a silver paste circuit board, a metal round cover, a film, an elastic contact body and a key body. Therefore, when the first section presses the key body, the pair of conductive blocks of the elastic contact body penetrates through the pair of openings of the film to be electrically contacted between the first conductive area and the second conductive area of the silver paste circuit board so as to generate a first section signal; then, when the key body is pressed at the second section, the pair of conductive blocks is in electrical contact with the first conductive area and the second conductive area, the metal round cover is pressed down through the contact pin of the key body to touch the third conductive area of the silver paste circuit board, and the second conductive area and the third conductive area are conducted to generate a second section signal.

Description

Two-stage pressing structure

technical field

The invention relates to a pressing structure, in particular to a two-stage pressing structure capable of continuously generating two-stages (twostages) signal output functions.

Background technique

There are many ways for people to commemorate the good times, and among them, photos are the most frequently used ones, because no matter it is a trip, a party, or even all memorable moments, they can be recorded with the help of a camera for users to recall in the future . Furthermore, based on the convenience of using digital cameras to transmit the captured image data to electronic devices (such as computers) for modification and processing, coupled with the gradual decline in its price, digital cameras are used Those are increasing day by day.

Furthermore, generally, the shutter button with focusing function, in order to achieve the function of focusing when the first segment is pressed, and then shooting when the second segment is pressed (pressed to the bottom), the known two-stage pressing structure is: A switching switch (switch) is punched on a circuit board (PCB), and a pressing piece is arranged on the switching switch. Wherein, the pressing member includes a key body and a return spring arranged at the lower end of the key body.

Therefore, the known two-stage pressing structure is composed of the circuit board, the switch, and the pressing member (including the button body and the return spring). Therefore, the known two-stage pressing structure not only increases the manufacturing cost due to more components, but also the thickness caused by the assembly of the circuit board and the switch is relatively thick, so the design space required by the known two-stage pressing structure Also larger.

Therefore, it can be seen from the above that the above-mentioned known two-stage pressing structure obviously has inconvenience and defects in actual use, and needs to be improved.

Therefore, the inventor feels that the above-mentioned defects can be improved, and based on the relevant experience in this field for many years, carefully observes and studies it, and cooperates with the application of theories, and proposes a design that is reasonable and effectively improves the above-mentioned defects. Technical solutions.

Contents of the invention

The technical problem to be solved by the present invention is to provide a two-stage pressing structure, which uses a silver paste PCB and a metal dome to replace the known thicker circuit board. Furthermore, through the cooperation of an elastic rubber body and a button body, the function of two-stage pressing can be achieved.

Furthermore, the two-stage pressing structure of the present invention is composed of the silver paste circuit board, the metal dome, the elastic rubber body, and the button body, so the manufacturing cost is relatively cheap; in addition, the silver paste circuit board and the The thickness caused by the assembly of the metal dome is relatively thin, so the design space required by the two-stage pressing structure of the present invention is smaller than that required by the assembly of the known circuit board and the switching switch.

In order to solve the above technical problems, according to one of the schemes of the present invention, a two-stage pressing structure is provided, which includes: a silver paste PCB, a metal dome, a film ( film), an elastic contact body, and a button body. Wherein, the silver paste PCB has first, second and third conductive areas separated from each other and formed from outside to inside; the metal dome is electrically arranged on the second conductive area , and the metal dome is insulated from the third conductive area.

Moreover, the film (film) is arranged on the silver paste circuit board and covers the metal dome, and the film has a pair of openings, and the pair of openings are both used to expose part of the first and part of the second conductive region; The elastic contact body has an opening, and a pair of conductive blocks that protrude downward and correspond to the openings; and, the key body has a pressing portion and a contact pin extending downward from the pressing portion, wherein the key The body is disposed on the elastic contact body, and the contact foot penetrates the opening.

The third conductive area has a circular area formed under the metal dome and a third strip area connected to the circular area; the second conductive area has a second surrounding area extending along the circular area , and a second strip region connected to the second surrounding region and extending along one side of the third strip region; the first conductive region has a first surrounding region extending along the second surrounding region, and is connected to the The first surrounding area extends along the first strip area on the other side of the third strip area.

Thereby, when the first segment presses the key body, the pair of conductive blocks of the elastic contact body pass through the pair of openings and electrically contact between the first and second conductive regions to generate the first segment signal; when the second segment presses the key body, the pair of conductive blocks press down on the metal dome through the contact pins to make the metal dome The cover touches the third conductive area, and then conducts the second and third conductive areas to generate a second segment of signal.

To sum up, the two-stage pressing structure of the present invention replaces the known thicker circuit board through the design of the silver paste circuit board and the metal dome. Furthermore, through the cooperation of the elastic contact body (elastic rubber body) and the key body, the function of two-stage pressing can be achieved.

Furthermore, the two-stage pressing structure of the present invention is composed of the silver paste circuit board, the metal dome, the elastic contact body (elastic rubber body), and the button body, so the manufacturing cost is relatively cheap. In addition, the thickness caused by the assembly of the silver paste circuit board and the metal dome is relatively thin, so the design space required by the two-stage pressing structure of the present invention is larger than that required for the assembly of the known circuit board and the switch. Small space.

In order to further understand the technology, means and effects that the present invention adopts to achieve the predetermined purpose, please refer to the following detailed description and accompanying drawings of the present invention. It is believed that the purpose, characteristics and characteristics of the present invention can be obtained from this For specific understanding, however, the accompanying drawings are only for reference and illustration, and are not intended to limit the present invention.

Description of drawings

Fig. 1 is a three-dimensional exploded view of a two-stage pressing structure of the present invention;

Fig. 2 is the top view of the silver paste circuit board of the two-stage pressing structure of the present invention;

Fig. 3 is a schematic side view sectional view of the two-stage pressing structure of the present invention before pressing;

Fig. 4 is a schematic side view sectional view of the two-stage pressing structure of the present invention when the first stage is pressed; and

FIG. 5 is a schematic sectional side view of the two-stage pressing structure of the present invention when the second stage is pressed.

Explanation of main reference signs

Silver paste circuit board 1 first conductive area 11

                                                                               

                                                                                                                       , 

Second conductive area 12

                                                                                                                                

                                                 

Third Power Direction Area 13

                                                                                                   

                                                               

metal dome 2

Film 3 Open Hole 30

Elastic contact body 4 opening 40

Conductive block 41

The first deformation zone 42

                                      

Button Body 5 Pressing Part 50

Contact feet 51

frame 6

Detailed ways

Please refer to FIG. 1 to FIG. 2 , which are respectively an exploded perspective view of the two-stage pressing structure of the present invention and a top view of the silver paste circuit board of the two-stage pressing structure of the present invention. As can be seen from the figure, the two-stage pressing structure of the present invention includes: a silver paste PCB (silver paste PCB) 1, a metal dome 2, a film (film) 3, an elastic contact body 4, A button body 5 and a frame 6 (frame) arranged under the silver paste circuit board 1 .

The silver paste circuit board 1 has first, second and third conductive areas 11 , 12 , 13 separated from each other and formed from outside to inside. Wherein, the third conductive region 13 has a circular region 130 formed under the metal dome 2 and a third strip region 131 connected to the circular region 130 . Furthermore, the second conductive region 12 has a second surrounding region 120 extending along the circular region 130 , and a second strip region connected to the second surrounding region 120 and extending along one end of the third strip region 131 121. In addition, the first conductive region 11 has a first surrounding region 110 extending along the second surrounding region 120 , and a first strip-shaped region connected to the first surrounding region 110 and extending along the other end of the third strip-shaped region 131 . District 111.

Furthermore, the metal dome 2 is electrically disposed on the second conductive region 12 , and the metal dome 2 is insulated from the third conductive region 13 . In addition, the film 3 is disposed on the silver paste circuit board 1 and covers the metal dome 2 , and the film 3 has a pair of openings 30 for exposing the first and second conductive regions 11 , 12 .

In addition, please refer to FIG. 3 to FIG. 5 , the elastic contact body 4 has an opening 40 and a pair of conductive blocks 41 protruding downward and corresponding to the opening 30 . Wherein, the elastic contact body 4 can be made of rubber or any elastic material, so the pair of conductive blocks 41 can be a pair of conductive rubber. Moreover, the elastic contact body 4 has a first section of deformation zone 42 and a second section of deformation zone 43 disposed on the upper end of the first section of deformation zone 42, and the thickness of the first section of deformation zone 42 is smaller than that of the first section of deformation zone 42. The thickness of the deformation zone 43 of the second stage. That is to say, the force that the first deformation zone 42 can withstand is smaller than that of the second deformation zone 43 , so it is easy to deform. Therefore, when the elastic contact body 4 is subjected to pressure, the deformation zone 42 of the first segment will be deformed first.

In addition, the key body 5 has a pressing portion 50 and a contact foot 51 extending downward from the pressing portion 50 , wherein the key body 5 is disposed on the elastic contact body 4 , and the contact foot 51 penetrates the opening 40 . Furthermore, the horizontal position of the contact pin 51 is higher than the horizontal position of the pair of conductive blocks 41 .

Please refer to FIG. 3 to FIG. 5 , which are schematic side cross-sectional views of the two-stage pressing structure of the present invention before pressing, during the first stage of pressing, and during the second stage of pressing. It can be seen from the figure that the first, second and third conductive regions 11 , 12 and 13 are insulated from each other before the key body 5 is pressed (as shown in FIG. 3 ).

However, when the first stage (first stage) pressed the button body 5 (as shown in FIG. 4 ), the pair of conductive blocks 41 of the elastic contact body 4 passed through the pair of openings 30 of the film 3 and electrically Sexual contact is between the first and second conductive regions 11, 12, so that the first and second conductive regions 11, 12 are electrically connected to each other, thereby generating the output of the first segment signal.

Furthermore, when the second stage (second stage) presses the button body 5 (as shown in FIG. 5 ), the pair of conductive blocks 41 of the elastic contact body 4 are in electrical contact with the first and second conductive regions. 11, 12 (that is, the first and second conductive areas 11, 12 remain electrically connected), press down the metal dome 2 through the contact pin 51 to touch the third conductive area 13, and then turn on the second and third conductive regions 12, 13 (that is, make the second and third conductive regions 12, 13 electrically connected to each other) to generate a second segment of signal output.

To sum up, the two-stage pressing structure of the present invention replaces the known thicker circuit board through the design of the silver paste circuit board 1 and the metal dome 2 . Furthermore, through the cooperation of the elastic contact body 4 (elastic rubber body) and the button body 5, the function of two-stage pressing can be achieved.

Furthermore, the two-stage pressing structure of the present invention is composed of the silver paste circuit board 1, the metal dome 2, the elastic contact body 4 (elastic rubber body), and the button body 5, so the manufacturing cost is relatively cheap . In addition, the thickness caused by the assembly of the silver paste circuit board 1 and the metal dome 2 is relatively thin, so the design space required by the two-stage pressing structure of the present invention is larger than that required by the conventional assembly of the circuit board and the switch. The design space is small.

However, the above description is only a detailed description and accompanying drawings of one of the best specific embodiments of the present invention, but the features of the present invention are not limited thereto, and are not intended to limit the present invention. The scope of protection of the present invention should be as follows: The scope of the claims shall prevail, and all embodiments that conform to the spirit of the protection scope of the present invention and its similar changes shall be included in the scope of the present invention, and any person skilled in the art can easily think of Any change or modification can be covered within the protection scope of the following case.

Claims (7)

1. A two-stage pressing structure, characterized in that it comprises: A silver paste circuit board, which has first, second and third conductive regions separated from each other and formed from outside to inside; a metal dome, which is electrically disposed on the second conductive region, and the metal dome is insulated from the third conductive region; A film, which is arranged on the silver paste circuit board and covers the metal dome, and the film has a pair of openings, and the pair of openings are used to expose part of the first and part of the second conductive region; An elastic contact body, which has an opening, and a pair of conductive blocks protruding downward and corresponding to the opening; and A button body, which has a pressing portion and a contact foot extending downward from the pressing portion, wherein the button body is arranged on the elastic contact body, and the contact foot penetrates the opening; The third conductive area has a circular area formed under the metal dome and a third strip area connected to the circular area; the second conductive area has a second surrounding area extending along the circular area , and a second strip region connected to the second surrounding region and extending along one side of the third strip region; the first conductive region has a first surrounding region extending along the second surrounding region, and is connected to the the first surrounding area and along the first strip on the other side of the third strip; Thereby, when the first segment presses the key body, the pair of conductive blocks of the elastic contact body pass through the pair of openings and electrically contact between the first and second conductive regions, so as to generate a first Segment signal; when the second segment presses the button body, the pair of conductive blocks press down on the metal dome through the contact feet to make the metal The dome touches the third conductive area, and then conducts the second and third conductive areas to generate a second segment of signal. 2. The two-stage pressing structure as claimed in claim 1, further comprising: a frame disposed under the silver paste circuit board. 3 . The two-stage pressing structure as claimed in claim 1 , wherein the elastic contact body has a first deformation region and a second deformation region disposed on an upper end of the first deformation region. 4 . 4. The two-stage pressing structure as claimed in claim 3, wherein the thickness of the deformation zone of the first stage is smaller than the thickness of the deformation zone of the second stage. 5. The two-stage pressing structure as claimed in claim 1, wherein the elastic contact body is made of rubber. 6. The two-stage pressing structure as claimed in claim 1, wherein the pair of conductive blocks are a pair of conductive rubber. 7. The two-stage pressing structure as claimed in claim 1, wherein the horizontal position of the contact pin is higher than the horizontal position of the pair of conductive blocks.

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