CN101026039A

CN101026039A - Elastic slice and switch device with same

Info

Publication number: CN101026039A
Application number: CN 200610038474
Authority: CN
Inventors: 龙思铭
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2006-02-21
Filing date: 2006-02-21
Publication date: 2007-08-29
Anticipated expiration: 2026-02-21
Also published as: CN100555487C

Abstract

This invention relates to a spring slice and a switch with the slice, in which, the slice includes a first slice with a metal cladding on the top, several movable connecting points adhered on the lower surface of the first slice, a second slice adhered on the lower surface of the first, a separation slice adhered on the lower surface of the second slice, extension parts are set on the slices, and the extension part of the second slice is set with a notch, the switch with the spring slice includes said spring slice and a circuit base board with several fixed connection points, and said spring slice is adhered to said circuit base board by a binder on the lower surface of the second slice under the match state of the movable connection points and the fixed connection points, the extension parts of the first and second slices are bent, the metal cladding on the top surface of the first slice contacts with the earth place of the circuit base board to conduct static and the notch can prevent avulsion of the metal cladding while bending.

Description

Elastic sheet and have the switching device of elastic sheet

[technical field]

The present invention relates to a kind of elastic sheet and have the switching device of elastic sheet, refer to a kind of switching device that is used for the elastic sheet on the electronic installation such as mobile phone key and has elastic sheet especially.

[background technology]

Elastic sheet and the switching device with elastic sheet are widely used in electronic installations such as mobile phone key.

As shown in Figure 1 to Figure 3 for a kind of elastic sheet of prior art and have the switching device of elastic sheet.Elastic sheet 5 ' as shown in Figure 1 comprise upper surface be provided with first thin slice 10 ' of the coat of metal 11 ', some be bonded in the first thin slice lower surface be the travelling contact 20 ' that arches shape, be bonded in the lower surface of first thin slice 10 ' and be provided with travelling contact accepting hole 31 ' second thin slice 30 ', be bonded in the separating sheet 40 ' of second thin slice, 30 ' lower surface, wherein offer on second thin slice 30 ' connect adjacent travelling contact accepting hole 31 ' connection groove 32 ' with ventilating air.First, second thin slice 10 ', 30 ' and separating sheet 40 ' on be respectively equipped with first extension 12 ', second extension 33 ', the 3rd extension 41 ' that extends and be close to mutually from the thin slice side, first, second thin slice 10 ', 30 ' extension can be towards second thin slice 30 ' place, the one side bendings.

Figure 3 shows that the switching device (not label) with elastic sheet, it comprises above-mentioned elastic sheet 5 ' and loop substrate 6 '.During assembling, separating sheet 40 ' is peeled off from the lower surface of second thin slice 30 ', and the bonding agent by second thin slice, 30 ' lower surface is bonded in elastic sheet 5 ' on the loop substrate 6 '.Loop substrate 6 ' is provided with some outsides fixed contact 61 ', center fixed contact 62 ', and all sides of each travelling contact 20 ' contact with outside fixed contact 61 ', and its top 21 ' then is in the relative separation state with center fixed contact 62 '.Please refer to Fig. 2, the extension of first thin slice 10 ' and second thin slice 30 ' is connected on the loop substrate 6 ' after the bending line A '-A ' bending simultaneously, and contacts with ground connection place 63 ' on the loop substrate 6 ' and realize the function of antistatic.

Yet, the defective of this design is: first thin slice 10 ' of described elastic sheet 5 ', second thin slice 30 ' are along A '-A ' bending the time, owing to be the bending simultaneously of two-layer thin slice, bending part is thicker, therefore the coat of metal 11 ' of first thin slice, 10 ' upper surface is bigger in the stretcher strain meeting of bending part, very easily be torn, in case tearing appears in the coat of metal 11 ', then cause electrostatic conducting test to pass through easily, perhaps because the high heat that produces when doing electrostatic test makes the coat of metal dry and cracked and thoroughly lose the function of conducting static.Therefore be necessary to provide a kind of new elastic sheet and have the switching device of this elastic sheet.

[summary of the invention]

The object of the present invention is to provide a kind of can prevent bending the time coat of metal be stretched tear and cause the electrostatic conducting test can't by and static can't conducting elastic sheet and have the switching device of this elastic sheet.

The objective of the invention is to be achieved through the following technical solutions: a kind of elastic sheet, comprise first thin slice that upper surface is provided with the coat of metal and lower surface and is provided with adhesive, some be bonded in the first thin slice lower surface be the travelling contact that arches shape, be bonded in the first thin slice lower surface and be provided with the travelling contact accepting hole second thin slice, be bonded in the separating sheet of the second thin slice lower surface.Wherein all be provided with the extension that extends from the thin slice side on first, second thin slice and the separating sheet and be close to mutually, wherein the extension of second thin slice is provided with fluting, also offers the connection groove that connects adjacent travelling contact accepting hole on second thin slice and is equipped with bonding agent in order to ventilating air and its upper and lower surface.

The switching device that the present invention has elastic sheet comprises above-mentioned elastic sheet and the loop substrate that is provided with the plurality of fixed contact, separating sheet is peeled off from the lower surface of second thin slice during assembling, and under the state of relative configuration with described fixed contact with described travelling contact, by being positioned at the bonding agent of the described second thin slice lower surface, described elastic sheet is sticked on the described loop substrate.The extension of described first, second thin slice is along the bending line bending, and the coat of metal of the described first thin slice upper surface contacts with ground connection place on the loop substrate and plays the effect of conducting static.

Compared with prior art, elastic sheet of the present invention and the switching device with elastic sheet are provided with a fluting at the second thin slice bending part, first, second thin slice is when bending, bending part thickness on slotting length just has only the thickness of first thin slice, the coat of metal of the first thin slice upper surface is reduced by the degree of stretcher strain greatly, thereby so the coat of metal can not guarantee that elastic sheet can and can realize the function of conducting static by electrostatic conducting test because of bending is stretched to tear.

[description of drawings]

Fig. 1 is the three-dimensional exploded view of a kind of elastic sheet of prior art.

Fig. 2 is the cutaway view of a kind of elastic sheet extension after A '-A ' bending of prior art.

Fig. 3 is the partial sectional view of a kind of switching device of prior art.

Fig. 4 is the three-dimensional exploded view of elastic sheet of the present invention.

The cutaway view that Fig. 5 is an elastic sheet extension of the present invention after the A-A bending.

Fig. 6 is the partial sectional view of switching device of the present invention.

[embodiment]

Please refer to shown in Figure 4ly, elastic sheet 5 of the present invention comprises first thin slice 10, some travelling contacts 20, second thin slice 30, separating sheet 40.

First thin slice 10 is made by insulating film material and its upper surface is provided with layer of metal coating 11, first thin slice 10 is provided with first extension 12 that extends from the thin slice side, wherein first thin slice, 10 upper surfaces are to establish to have expired the coat of metal on first extension 12, other parts of first thin slice, 10 upper surfaces are then established with the netted coat of metal, and its lower surface is provided with adhesive 13.

Travelling contact 20 is and arches shape, and its top 21 is bonded in the lower surface of first thin slice 10 by above-mentioned adhesive 13.

Second thin slice 30 is made by insulating film material equally, which is provided with some spaces circle travelling contact accepting hole 31 and connect the connection groove 32 of adjacent travelling contact accepting hole 31, second thin slice 30 is provided with second extension 33 that extends from the thin slice side, and be provided with a square fluting 34 on second extension 33, fluting 34 is not separated into two parts with second thin slice 30.The upper and lower surface of second thin slice 30 is respectively equipped with

bonding agent

35,36.

Separating sheet 40 is provided with the 3rd extension 41 that extends from the thin slice side, the upper surface of separating sheet 40 is provided with sticker 42, separating sheet 40 is bonded in the lower surface of second thin slice 30 by described sticker 42 and the below of travelling contact 20 enters in the travelling contact 20 to prevent outside dust and other foreign matters, and the extension of above-mentioned thin slice is close to mutually and the extension of first thin slice 10 and second thin slice 30 can be towards second thin slice 30 places, the one side bending.

Please refer to Fig. 4 to shown in Figure 6, the switching device (not label) with elastic sheet 5 of the present invention comprises elastic sheet 5 and loop substrate 6.During assembling, separating sheet 40 is peeled off from the lower surface of second thin slice 30, and the bonding agent 36 by second thin slice, 30 lower surfaces is bonded in elastic sheet 5 on the loop substrate 6.Loop substrate 6 is provided with some outsides fixed contact 61, center fixed contact 62, and all sides of each travelling contact 20 contact with outside fixed

contact

61, and 21 at its top and center fixed contact 62 are in the relative separation state.First extension 12 of first thin slice 10 and second extension 33 on second thin slice 30 bond on the loop substrate 6 after second thin slice 30 places, the one side bending together along bending line A-A, and the coat of metal 11 on first thin slice 10 is located 63 with the ground connection on the loop substrate and contacted.Because second extension 33 on second thin slice 30 is provided with a fluting 34 at its bending part, bending part its thickness on fluting 34 length only is the thickness of first thin slice 10, therefore the deformation extent that stretched when bending of the coat of metal on first extension 12 of first thin slice 10 is very little, can not tear, thereby guarantee that the electrostatic conducting test can be passed through and the realization of electrostatic conducting function because of bending is stretched.

During use, the top 21 of firmly pushing travelling contact 20 offsets downward with center fixed contact 62 on the loop substrate 6 travelling contact 20 and contacts, and the little airs in the travelling contact 20 can circulate in the connection groove 32 of travelling contact accepting hole 31 both sides.After removing the pressure that is applied to travelling contact 20 tops 21, by the elastic deformation that travelling contact 20 has, the top 21 of described travelling contact 20 is left from described center fixed contact 62, has so promptly realized the switching function of switching device of the present invention.

Should be pointed out that the above one embodiment of the present invention that only are, other any equivalent transformation that carries out on the embodiment of the present invention basis does not break away from essence technical scheme of the present invention.For example, the fluting on the present invention's second thin slice also can be that the extension of second thin slice is disconnected and the gap that forms fully at bending part, promptly slots and its extension is broken into fully two parts of separation, can reach purpose of the present invention so equally.

Claims

1. elastic sheet, comprise that upper surface is provided with first thin slice of the coat of metal, some travelling contacts that is bonded in the first thin slice lower surface, is bonded in the first thin slice lower surface and is provided with second thin slice of some travelling contact accepting holes, be equipped with the extension that extends and be close to mutually from the thin slice side on above-mentioned two thin slices, the above-mentioned extension of being close to mutually can be towards the one side bending of the second thin slice place, and it is characterized in that: the extension of described second thin slice is provided with fluting at bending part.

2. elastic sheet as claimed in claim 1 is characterized in that: described fluting is square, and it does not become two parts with second slice separates.

3. elastic sheet as claimed in claim 1 is characterized in that: described fluting is broken into extension two parts of separation fully.

4. as claim 2 or 3 described elastic sheets, it is characterized in that: the described coat of metal is coated with full on the extension of the first thin slice upper surface, on other position of the first thin slice upper surface with netted setting.

5. elastic sheet as claimed in claim 4 is characterized in that: described travelling contact is and arches shape.

6. elastic sheet as claimed in claim 1 is characterized in that: described second thin slice is provided with the connection groove that connects adjacent travelling contact accepting hole.

7. elastic sheet as claimed in claim 6 is characterized in that: the upper and lower surface of described second thin slice all scribbles bonding agent.

8. elastic sheet as claimed in claim 7 is characterized in that: the lower surface of described second thin slice also is bonded with a separating sheet.

9. switching device, have elastic sheet as claimed in claim 1 and be provided with the loop substrate of plurality of fixed contact, it is characterized in that: under the state of relative configuration with described fixed contact described travelling contact, by being positioned at the bonding agent on described second thin slice, described elastic sheet is sticked on the described loop substrate, ground connection place in the extension bending of described first, second thin slice, the coat of metal on the described first thin slice extension and loop substrate contacts.