CN212570800U - Flexible circuit board button and button panel - Google Patents

Abstract

The utility model relates to a flexible key technical field, concretely relates to flexible line way board button and keypad, including flexible line sheet layer with set up in the metal shrapnel on flexible line sheet layer, metal shrapnel includes according to the tablet, set up in the peripheral at least three resilience pin of according to the tablet and set up in the contact foot of resilience pin bottom, the surface on flexible line sheet layer is provided with first contact point and second contact point, contact foot is connected with first contact point, the resilience pin is formed by at least three-section wave piece end to end, the upper surface covering on flexible line sheet layer has the substrate layer, the substrate layer is provided with and is used for placing metal shrapnel's appearance chamber, the substrate layer still is provided with presses the splenium, presses the top that the splenium is located metal shrapnel, presses the lower. The resilience pin of the metal elastic sheet of the key adopts the structural design of a multi-section wave sheet combination, is not easy to break, has long service life, and has no too hard resilience force and excellent pressing feeling.

Description

Flexible circuit board button and button panel

Technical Field

The utility model relates to a flexible key technical field, concretely relates to flexible line way board button and key panel.

Background

Adopt membrane key switch as operating panel on present many electronic product, when bringing convenient operation and pleasing to the eye big prescription, also encountered all kinds of use obstacle problem, wherein include metal shrapnel's life-span and sense of touch problem, current metal shrapnel is as shown in figure 5, it is provided with the pressing plate, kick-back pin, and set up in the contact foot of kick-back pin bottom, the contact foot communicates with the one end of circuit, the rethread pushes down the pressing plate and makes the contact of pressing plate and below realize the switch function of circuit. However, the springback pin of the conventional metal elastic sheet is usually a single metal sheet or a single metal sheet structure with a slight radian, two ends of the springback pin are respectively connected with the pressing sheet and the contact pin and are integrally formed, a bent part is formed at the contact part of the springback pin and the pressing sheet in the structure, and after long-time use, the bent part is easily broken due to frequent springback pressing, so that the normal use of the panel is influenced, and the panel is difficult to maintain and only can be replaced. Secondly, because the resilience pin adopts the structural design of the single piece, the resilience force of the resilience pin is hard, and the pressing feeling is poor.

Disclosure of Invention

In order to overcome the shortcoming and the not enough that exist among the prior art, the utility model aims to provide a flexible line way board button, the structural design of multistage wave piece combination is adopted to the resilience pin of the metal shrapnel of this button, is difficult for being broken, and long service life, and the structural design resilience force that adopts multistage wave piece can not be too hard, presses down and feels splendid.

Another object of the present invention is to provide a key panel, which has a long key life, good reliability and good pressing effect.

The purpose of the utility model is realized through the following technical scheme: a flexible circuit board key comprises a flexible circuit board layer and a metal elastic sheet arranged on the flexible circuit board layer, the metal elastic sheet comprises a pressing sheet, at least three rebound pins arranged on the periphery of the pressing sheet, and contact pins arranged at the bottom ends of the rebound pins, the surface of the flexible circuit board layer is provided with a first contact point and a second contact point, the contact foot is connected with the first contact point, the second contact point is positioned below the pressing sheet, the springback pin is formed by connecting at least three sections of wave sheets end to end, each section of wave sheet comprises a wave crest and a wave trough, the upper surface of the flexible circuit board layer is covered with a substrate layer, the substrate layer is provided with a containing cavity for placing the metal elastic sheet, the substrate layer is further provided with a pressing part, the pressing part is located above the metal elastic sheet, and the lower surface of the pressing part is in contact with the upper surface of the pressing sheet.

The pressing part is provided with a plurality of knife edges which are arranged at intervals and used for cutting off the lower half part of the pressing part.

Wherein, the pressing sheet, the rebound pin and the contact pin are integrally formed.

The number of the springback pins is four, and the springback pins are arranged around the annular array and the pressing sheet.

And a flexible metal wire is connected between the pressing sheet and the contact pin and is positioned in the metal elastic sheet.

And after the pressing sheet is pressed down, the contact part is communicated with the second contact point after contacting the second contact point.

A key panel, comprising: comprising the flexible circuit board key.

The upper surface of the base material layer is covered with a printing layer, and the printing layer is provided with a key label.

The lower surface of the flexible circuit board layer is provided with a double-sided adhesive layer, and a stripping layer is attached to the surface of the double-sided adhesive layer.

Wherein the flexible circuit board layer is connected with a flexible terminal.

The beneficial effects of the utility model reside in that: the resilience pin of the metal elastic sheet of the key adopts the structural design of the combination of the multiple sections of wave sheets, the multiple sections of wave sheets provide deformation resilience force together, the multiple sections deform, the defect that the existing single metal elastic sheet deforms to be easily broken is overcome, the metal elastic sheet is not easy to break, the service life is long, the structural design of the multiple sections of wave sheets is adopted, the multiple sections deform, the resilience force cannot be too hard, and the pressing feeling is excellent.

Another object of the present invention is to provide a key panel, which has a long key life, good reliability and good pressing effect.

Drawings

Fig. 1 is a schematic structural diagram of the key and the panel of the present invention.

Fig. 2 is a top view of the metal dome of the present invention.

Fig. 3 is a top view of the panel of the present invention.

Fig. 4 is a sectional view of the pressing portion of the present invention.

Fig. 5 is a schematic structural diagram of a conventional metal dome.

The reference signs are: the flexible circuit board comprises a flexible circuit board layer 1, a pressing sheet 2, a rebound pin 3, a contact pin 4, a first contact point 5, a second contact point 6, a wave sheet 7, a base material layer 8, a containing cavity 9, a pressing part 10, a knife edge 11, a flexible metal wire 12, a contact part 13, a printing layer 14, a key label 15, a double-faced adhesive layer 16, a stripping layer 17 and a flexible terminal 18.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and accompanying fig. 1 to 5, which are not intended to limit the present invention.

Referring to fig. 1-5, a flexible circuit board key comprises a flexible circuit board layer 1 and a metal elastic sheet arranged on the flexible circuit board layer 1, wherein the metal elastic sheet comprises a pressing sheet 2, at least three springback pins 3 arranged on the periphery of the pressing sheet 2, and contact pins 4 arranged at the bottom ends of the springback pins 3, a first contact point 5 and a second contact point 6 are arranged on the surface of the flexible circuit board layer 1, the contact pins 4 are connected with the first contact point 5, the second contact point 6 is positioned below the pressing sheet 2, the springback pins 3 are formed by connecting at least three sections of wavy sheets 7 end to end, each section of wavy sheet 7 comprises a wave crest and a wave trough, a substrate layer 8 covers the upper surface of the flexible circuit board layer 1, the substrate layer 8 is provided with a containing cavity 9 for placing the metal elastic sheet, and the substrate layer 8 is further provided with a pressing part, the pressing part 10 is located above the metal elastic sheet, and the lower surface of the pressing part 10 contacts with the upper surface of the pressing sheet 2.

This metal shrapnel's of button kick-back pin 3 adopts the structural design of 7 combinations of multistage wave piece, and multistage wave piece 7 provides deformation resilience force together, and the multistage warp, has overcome the defect that current metal shrapnel monolithic warp and takes place the rupture easily, is difficult for being broken, and long service life just adopts the structural design of multistage wave piece 7, and the multistage warp, and the resilience force can not be too hard, presses down and feels splendid.

The utility model discloses an in-service use in-process, the splenium 10 is pressed to the holding down, presses splenium 10 extrusion pressing piece 2 down, and elastic deformation takes place for the multistage wave piece 7 of kick-back pin 3, presses the splenium 10 after the contact of splenium 2 to second contact point 6, loosens to press splenium 10, and multistage wave piece 7 provides the resilience force that warp and impels pressing piece 2 to reset.

The pressing portion 10 is provided with a plurality of knife edges 11 arranged at intervals for cutting off the lower half portion of the pressing portion 10. The knife edge 11 is arranged to facilitate pressing of the pressing part 10, reduce pressing resistance and improve pressing feeling of the key.

Wherein, the pressing sheet 2, the rebound pins 3 and the contact pins 4 are integrally formed.

The number of the springback pins 3 is four, and the springback pins are arranged around the pressing sheet 2 in an annular array.

And a flexible metal wire 12 is connected between the pressing sheet 2 and the contact pin 4, and the flexible metal wire 12 is positioned inside the metal elastic sheet. The structural arrangement of the flexible metal wire 12 and the four resilient pins 3 makes it possible to maintain the connection between the pressing piece 2 and the first contact point 5 even if one of the resilient pins 3 is disconnected, and the remaining three resilient pins 3 still can complete the normal operation of the key.

Wherein, the bottom of the pressing sheet 2 is provided with a contact part 13, and after the pressing sheet 2 is pressed down, the contact part 13 is communicated with the second contact point 6 after contacting the second contact point 6. The arrangement of the contact part 13 effectively shortens the stroke of the pressing sheet 2, reduces the deformation of the rebound pin 3 and prolongs the service life.

A key panel, comprising: comprising the flexible circuit board key.

Wherein, the upper surface of substrate layer 8 covers there is printing layer 14, and printing layer 14 is provided with key label 15.

The lower surface of the flexible circuit board layer 1 is provided with a double-sided adhesive layer 16, and a stripping layer 17 is attached to the surface of the double-sided adhesive layer 16.

Wherein a flexible terminal 18 is connected to the flexible circuit board layer 1.

The above-mentioned embodiment is the utility model discloses the implementation of preferred, in addition, the utility model discloses can also realize by other modes, not deviating from the utility model discloses any obvious replacement is all within the protection scope under the prerequisite of design.

Claims (10)

1. The utility model provides a flexible line way board button, includes flexible line way sheet layer and sets up in the metal shrapnel on flexible line way sheet layer, its characterized in that: the metal shrapnel includes according to the pressure piece, sets up in the peripheral at least three pin of kick-backing of pressure piece and sets up in the contact foot of kick-backing pin bottom, the surface on flexible line sheet layer is provided with first contact point and second contact point, the contact foot is connected with first contact point, and the second contact point is located press the below of pressure piece, the pin of kick-backing is formed by at least three-section wave piece end to end, and every section wave piece contains a crest and a trough, the upper surface covering on flexible line sheet layer has the substrate layer, and the substrate layer is provided with and is used for placing the appearance chamber of metal shrapnel, the substrate layer still is provided with presses the splenium, presses the top that is located the metal shrapnel according to the splenium.

2. A flexible wiring board key according to claim 1, wherein: the pressing part is provided with a plurality of knife edges which are arranged at intervals and used for cutting off the lower half part of the pressing part.

3. A flexible wiring board key according to claim 1, wherein: the pressing sheet, the rebound pin and the contact pin are integrally formed.

4. A flexible wiring board key according to claim 1, wherein: the number of the springback pins is four, and the springback pins are annularly arrayed around the pressing sheet.

5. A flexible wiring board key according to claim 1, wherein: a flexible metal wire is connected between the pressing sheet and the contact pins and is positioned inside the metal elastic sheet.

6. A flexible wiring board key according to claim 1, wherein: the bottom of the pressing sheet is provided with a contact part, and after the pressing sheet is pressed downwards, the contact part is communicated with the second contact point after contacting the second contact point.

7. A key panel, comprising: a key comprising the flexible wiring board of any one of claims 1-6.

8. The key panel of claim 7, wherein: the upper surface of the substrate layer is covered with a printing layer, and the printing layer is provided with a key label.

9. The key panel of claim 7, wherein: the lower surface of the flexible circuit board layer is provided with a double-sided adhesive layer, and a stripping layer is attached to the surface of the double-sided adhesive layer.

10. The key panel of claim 7, wherein: the flexible circuit board layer is connected with a flexible terminal.

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