CN202434379U

CN202434379U - Touch switch

Info

Publication number: CN202434379U
Application number: CN 201220022729
Authority: CN
Inventors: 洪文仁
Original assignee: Taiwan Misaki Electronics Co Ltd
Current assignee: Taiwan Misaki Electronics Co Ltd
Priority date: 2012-01-18
Filing date: 2012-01-18
Publication date: 2012-09-12
Anticipated expiration: 2022-01-18

Abstract

The utility model discloses a touch switch, which comprises an encapsulation component, a pressing body, a wrapping plate sheet and a touch component, wherein the wrapping plate sheet is provided with a top plate and two side plates; a central opening is formed on the top plate; a plurality of positioning holes are formed on the side plates; the pressing body is protruded and stretched on the encapsulation component from the central opening of the wrapping plate sheet; the positioning holes at the two sides of the wrapping plate sheet are matched with the convex blocks of the encapsulation component to fix the pressing body on the encapsulation component; the touch component with a switch function is accommodated in the spaces formed inside the pressing body and the encapsulation component; a welding assistant layer is arranged on the surface of the wrapping plate sheet; and an anti-welding region for removing the welding assistant layer is arranged at the bottom of the top plate and used for preventing steam of a welding flux from entering into the encapsulation component, so that the pressing body can be prevented from being adhered to elements in the encapsulation component.

Description

Touch switch

Technical field

The utility model relates to a kind of touch switch, is meant that especially a kind of steam of solder flux that prevents gets in the package assembling, and then the touch switch of avoiding pressing body and package assembling inner member to paste each other.

Background technology

Consult Fig. 1; Known a kind of touch switch 900 comprises that a package assembling 91, is arranged at the pressing body 92 of package assembling 91 tops, a pressing body 92 is fixed in the coating plate 81 of package assembling 91; And one be located at the inner triggering component (figure does not show) of pressing body 92 belows and package assembling 91, and package assembling 91 has a body 901, several are arranged at pin 911,912 and several projections 913,914 that is arranged at body 901 sides of body 901 belows.

Coat plate 81 and have a position central opening 810 and several location holes 820,830 of side up; The central opening 810 that coats plate 81 supplies pressing bodies 92 to be stretched on the package assembling 91, and the both sides location hole 820,830 that coats plate 81 cooperates the projection 913,914 of package assemblings 91 that pressing body 92 is retained on the package assembling 91.

Package assembling 91 inside have living space and can be installed with triggering component; Triggering component has fixture and the movable piece (figure does not show) that connects said pin 911,912; When pressing body 92 is not pushed; Movable piece not with pin 911,912 conductings of package assembling 91, when pressing body 92 was pressed, movable piece was realized switching function via pin 911,912 conductings of fixture and package assembling 91.

Coat the leading edge 82 of plate 81, the bottom surface 915 and pin 911,912 coplines of package assembling 91, and coat plate 81 and have two projection tab the 831, the 832nd, be inserted in the circuit board location hole of (figure does not show).

Yet; The disappearance of this kind touch switch 900 is: when touch switch 900 by the surface mount solder bond on circuit board the time; Because solder flux (flux) is met heat and is produced steam; Its steam gets into package assembling 91 inside along coating plate 81 easily, so that pressing body 92 and package assembling 91 inner members generation stickup phenomenon, and the not good phenomenon of feel is arranged when the user operates pressing body 92 easily.

Summary of the invention

Therefore, in order to overcome above-mentioned disappearance, when providing a kind of the welding, the utility model avoid the solder flux steam to produce the touch switch of pasting phenomenon each other to prevent internal structure along coating plate entering package assembling inside.

The touch switch of the utility model comprises that a pressing body, has the package assembling of several pins and several projections, a pressing body is fixed in the coating plate of package assembling, and one is located at the pushing of cooperation pressing body in pressing body below and the package assembling and realizes the triggering component of switching function; Coat plate and have a top board and two side plates; Top board has a central opening; Two side plates have several location holes respectively; The central opening that coats plate supplies pressing body to be stretched on the package assembling, and the location hole that coats the both sides of plate cooperates the projection of package assembling, and pressing body is retained on the package assembling; Pressing body and package assembling inside have the space can be installed with triggering component, and said coating plate surface has the bottom side that helps layer and top board and has the anti-welding zone that a removal helps layer.

Preferable, said package assembling comprises that a pedestal and is positioned at the framework of this pressing body of pedestal upper fixed, and this pedestal also comprises said pin, and central guide-joining plate and two the peripheral guide-joining plates that electrically connect with said pin respectively; Said triggering component has a movable piece and a fixture; The curved shape of this movable piece arches upward toward central authorities; This fixture is located on movable piece and has two side arms under the central fovea, and the said side arm of this movable piece and this fixture corresponds respectively to the central guide-joining plate and the said peripheral guide-joining plate of this pedestal.

Preferable, said touch switch comprises that also one is positioned at the insulation film of this triggering component top, and this pedestal also has one and is positioned at the storage tank of central authorities and lays respectively at two contraposition mouths of the storage tank left and right sides; This insulation film size is respectively established a breach respectively corresponding to the size of this pedestal and in the left and right sides, and each gap position is corresponding to the contraposition mouth of this pedestal; These framework length and width are consistent with the length and width of this pedestal; It in it hollow bulb; This framework has a frame portion, two in the top side projection of this frame portion end face left and right sides, and two in the fixed block of this left and right sides, frame portion bottom surface, and the position of said fixed block is corresponding to the said contraposition mouth of this pedestal; This pressing body is convex shape; Has a press section and an external diameter Actuator Division greater than the press section; This Actuator Division is placed in this framework hollow bulb, and the central authorities of this bottom surface, Actuator Division are provided with an application point, and this application point is connected to this insulation film and the movable piece of this triggering component of indirect contact.

Preferable, the isolating bar that contacts of the peripheral side wall that the peripheral side wall of the hollow bulb of described framework has several Actuator Divisions that make this pressing body and the peripheral side wall of this hollow bulb for several line contacts.

Preferable; The left and right sides of the top board of said coating plate also is respectively equipped with first location hole; The position of said first location hole corresponds respectively to the top side projection of this framework end face, covers this framework for this coating plate and makes two top side projections of press section and this framework end face of this pressing body stretch out in the central opening and first location hole of this top board respectively; Said pedestal also have one be positioned at the opposition side of storage tank back side wall; Back side wall also has two dorsal part projections; The said side plate of this coating plate is positioned at the both side edges of this top board and to extending below; The bottom of each side plate is equipped with an envelope sheet, and respectively is provided with second location hole corresponding to two dorsal part projections of this back side wall, and be provided with in said second location hole top inside shallow slot for said side plate along the inside bending of said shallow slot; And make said dorsal part projection fall into second location hole of said side plate, and each member is sealed the location by the envelope sheet of said side plate.

Preferable, said pedestal also has a lateral wall around storage tank, and coats the leading edge of plate, the lateral wall and the pin copline of pedestal.

The beneficial effect of the utility model touch switch is: coat the plate surface and have and help layer and removal to help the anti-welding zone of the bottom side that is formed at top board of layer; The steam that can effectively prevent solder flux gets in the package assembling, and then avoids pressing body and package assembling inner member to paste each other.

Description of drawings

Fig. 1 is the stereogram of existing touch switch;

Fig. 2 is that the touch switch of the utility model cooperates the stereogram that is assembled in the preferred embodiment on the circuit board;

Fig. 3 is the upward view of coating plate of the touch switch of the utility model;

Fig. 4 is the three-dimensional exploded view of the touch switch of the utility model;

Fig. 5 is that the touch switch of the utility model will coat the stereogram that plate is separated;

Fig. 6 is the upward view of the touch switch of the utility model.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is elaborated.

Consult Fig. 2, touch switch 100 outward appearances of the utility model comprise that mainly a package assembling 10, a pressing body 2 and coat plate 3, are used to be welded in a circuit board 7.

Package assembling 10 is the insulation material; Comprise a pedestal 1 and a framework 5; Pedestal 1 has a body 101, several are arranged at pin 111,112 and several several projections 511 ', 512 ' that are arranged at body 101 top sides of body 101 belows, and pressing body 2 all is arranged at pedestal 1 top for the insulation material with framework 5; Coating plate 3 is metal material, and pressing body 2 is fixed on framework 5 and the pedestal 1; Coat plate 3 and have a top board 31 and two side plates 321,322; Top board 31 has a leading edge 34 that is positioned at side plate 321,322 sides; Top board 31 also has a central opening 300 and several location holes 310,320; Central opening 300 supplies pressing bodies 2 to be stretched on the pedestal 1, and both sides location hole 310,320 cooperates the projection 511 ', 512 ' of bodies 101 that pressing body 2 is retained on the framework 5 of package assembling 10.

Consult Fig. 3; And cooperation Fig. 2, the characteristics of the utility model just are, coat the top board 31 of plate 3 and the surface of two side plates 321,322 and all have the layer of helping; But have one in the bottom side of top board 31 and remove the anti-welding zone 400 that helps layer; Help layer and form the anti-welding zone 400 that removal helps layer because coating plate 3 surfaces have,, can prevent effectively that the steam of solder flux from getting in this package assembling 10 when touch switch 100 is welded on the circuit board 7 in the bottom side of top board 31; And then avoid pressing body 2 and package assembling 10 inner members to paste each other; The area of anti-welding zone 400 can be the whole or subregion of bottom side, as long as can avoid the steam of solder flux to get into, all belongs to the category of the utility model.

The actual practice of anti-welding zone 400 after can coating plate 3 being shaped with the copper coin punching out, plates one deck tin (helping layer) again; After having plated tin, only will help layer to strike off with laser, and make it expose the copper coin surface in the bottom side of top board 31; Because the surface of tin makes solder flux flow easily; But solder flux is difficult on copper coin surface flowing, and after handling through this, the steam that also just can prevent solder flux gets into and avoids the phenomenon of loose contact to take place.

Consult Fig. 2 and Fig. 4, touch switch 100 is except aforesaid pedestal 1, framework 5, pressing body 2 and coat the plate 3, comprises that also a triggering component 6 and is positioned at the insulation film 4 of triggering component 6 tops, now each element is introduced as follows in detail.

Triggering component 6 has a movable piece 61 and a fixture 62; This fixture 62 is located on movable piece 61 and has slightly two side arms 621,622 under the central fovea; These movable piece 61 curved shapes slightly arch upward toward central authorities, and movable piece 61 cooperates pushing of pressing body 2 and realizes switching function; Pedestal 1 also comprises respectively a central guide-joining plate 151 and two the peripheral guide-joining plates 152,153 that electrically connect with said pin 111,112; This movable piece 61 is corresponding to the central guide-joining plate 151 of this pedestal 1, and two side arms 621,622 of this fixture 62 correspond respectively to two peripheral guide-joining plates 152,153 of this pedestal 1.Be noted that the form of triggering component as long as make touch switch 100 have the switch conduction function, all belongs to the category of the utility model when being not limited to the aspect of Fig. 4.

Pedestal 1 also has one and is positioned at the storage tank 110 of central authorities and lays respectively at two contraposition mouths 130,120 of storage tank 110 left and right sides; Insulation film 4 is positioned at this triggering component 6 tops; Insulation film 4 has a size and respectively establishes a breach 410,420 respectively corresponding to the lamellar body 41 of the size of this pedestal 1 and in lamellar body 41 left and right sides, and each breach 410,420 position is corresponding to the contraposition mouth 130,120 of this pedestal 1.

Pedestal 1 also has the back side wall 116 that a lateral wall 115 and around storage tank 110 is positioned at the opposition side of storage tank 110, and touch switch 100 is for being installed on the circuit board 7 by the lateral wall 115 of the leading edge 34 that coats plate 3, pedestal 1 and pin 111,112 coplines; Coat plate 3 and also have two projection tab the 331, the 332nd, be inserted in the location hole 710,720 of circuit board 7; Yet; Know art technology person when knowing; Projection tab 331,332 can be a copline with the lateral wall 115 of pedestal 1 also, utilizes surface soldered to be packaged on the circuit board 7, also belongs to the category of the utility model.

Consult Fig. 4 and Fig. 5; Framework 5 length and width are consistent with the length and width of pedestal 1; Framework 5 has hollow bulb that a frame portion 51, defines by frame portion 51 510, two in the top side projection 511,512 of these frame portion 51 end face left and right sides; And two in the position of 513,514, two fixed blocks 513,514 of fixed block of this left and right sides, frame portion 51 bottom surface corresponding to two contraposition mouths 130,120 of this pedestal 1; This pressing body 2 is convex shape; Have a press section 22 and an external diameter and be slightly larger than the Actuator Division 21 of press section; Actuator Division 21 has a surrounding wall 211; This Actuator Division 21 is placed in the hollow bulb 510 of this framework 5, and the central authorities of these 21 bottom surfaces, Actuator Division are provided with an application point (figure does not show), and this application point is connected to this insulation film 4 and the movable piece 61 of this triggering component 6 of indirect contact.

In addition, the peripheral side wall 520 of framework 5 contiguous hollow bulbs 510 has the surrounding wall 211 of several Actuator Divisions that make this pressing body 2 21 and the isolating bar 521 for several line contacts that contacts of peripheral side wall 520; Because of being provided with several isolating bars 521; The solvent vapour that the surrounding wall 211 of Actuator Division 21 is produced in the time of can making welding with the peripheral side wall 520 formed gaps of framework 5 is easy to loss; Because top board 31 bottom sides have anti-welding zone 400, pressing body 2 can not produce the problem of pasting each other with inner member in addition.

The top board 31 that coats plate 3 is provided with central opening 300; The left and right sides of central opening 300 also is respectively equipped with first location hole 310,320; The position of each first location hole 310,320 is corresponding to the top side projection 511,512 of these framework 5 end faces; Cover framework 5 for coating plate 3, make two top side projections 511,512 of press section 22 and framework 5 end faces of pressing body 2 stretch out in the central opening 300 (size conform to but less than the external diameter of Actuator Division 21) and first location hole 310,320 of this top board 31 respectively with press section 22 external diameters.

Consult Fig. 5 and Fig. 6; The biside plate 321,322 that coats plate 3 is positioned at the both side edges of this top board 31 and to extending below; The bottom of each side plate 321,322 is equipped with an envelope sheet 341,342 and respectively is provided with second location hole 330,340 corresponding to two dorsal part projections 523,524 (like Fig. 5) of the back side wall 116 of pedestal 1, and is provided with inside shallow slot 360,380 in contiguous second location hole 330,340 tops and makes the dorsal part projection 523,524 of the back side wall 116 of pedestal 1 fall into second location hole 330,340 of two plates 321,322 along 360, the 380 inside bendings of two shallow slots for biside plate 321,322 and by the envelope sheet of biside plate 321,322 341,342 each member is sealed the location.

Need hot melt after each element assembling of touch switch 100; After giving hot melt like two top side projections 511,512 of the framework 5 of Fig. 4; With the flat fixed projection 511 ', 512 ' that forms like Fig. 2; And become flat fixed projection 523 ', 524 ' behind the hot melt corresponding to two dorsal part projections 523,524 of the back side wall 116 of pedestal 1 like Fig. 6 like Fig. 5, make to coat plate 3 and package assembling 10 firm combining.

In sum; The beneficial effect of the utility model touch switch 100 is: coat plate 3 surfaces and have the anti-welding zone 400 that the removal that helps layer and form in the bottom side of top board 31 helps layer; The steam that can effectively prevent solder flux gets in the package assembling 10; And then avoid pressing body 2 and package assembling 10 inner members to paste each other, can reach the utility model purpose really.

Claims

1. touch switch; Comprise one have several pins and several projections package assembling, a pressing body, one pressing body is fixed in the coating plate of package assembling, and one is located at the pushing of cooperation pressing body in pressing body below and the package assembling and realizes the triggering component of switching function; Coat plate and have a top board and two side plates; Top board has a central opening; Two side plates have several location holes respectively; The central opening that coats plate supplies pressing body to be stretched on the package assembling, and the location hole that coats the both sides of plate cooperates the projection of package assembling, and pressing body is retained on the package assembling; Pressing body and package assembling inside have the space can be installed with triggering component; It is characterized in that:

Said coating plate surface has the layer of helping, and has one in the bottom side of top board and removes the anti-welding zone that helps layer.

2. touch switch according to claim 1; It is characterized in that: said package assembling comprises that a pedestal and is positioned at the framework of this pressing body of pedestal upper fixed; This pedestal also comprises said pin, and central guide-joining plate and two the peripheral guide-joining plates that electrically connect with said pin respectively; Said triggering component has a movable piece and a fixture; The curved shape of this movable piece arches upward toward central authorities; This fixture is located on movable piece and has two side arms under the central fovea, and the said side arm of this movable piece and this fixture corresponds respectively to the central guide-joining plate and the said peripheral guide-joining plate of this pedestal.

3. touch switch according to claim 2 is characterized in that: said touch switch comprises that also one is positioned at the insulation film of this triggering component top, and this pedestal also has one and is positioned at the storage tank of central authorities and lays respectively at two contraposition mouths of the storage tank left and right sides; This insulation film size is respectively established a breach respectively corresponding to the size of this pedestal and in the left and right sides, and each gap position is corresponding to the contraposition mouth of this pedestal; These framework length and width are consistent with the length and width of this pedestal; It in it hollow bulb; This framework has a frame portion, two in the top side projection of this frame portion end face left and right sides, and two in the fixed block of this left and right sides, frame portion bottom surface, and the position of said fixed block is corresponding to the said contraposition mouth of this pedestal; This pressing body is convex shape; Has a press section and an external diameter Actuator Division greater than the press section; This Actuator Division is placed in this framework hollow bulb, and the central authorities of this bottom surface, Actuator Division are provided with an application point, and this application point is connected to this insulation film and the movable piece of this triggering component of indirect contact.

4. touch switch according to claim 3 is characterized in that: the isolating bar for several line contacts that contacts of the peripheral side wall that the peripheral side wall of the hollow bulb of said framework has several Actuator Divisions that make this pressing body and the peripheral side wall of this hollow bulb.

5. touch switch according to claim 4; It is characterized in that: the left and right sides of the top board of said coating plate also is respectively equipped with first location hole; The position of said first location hole corresponds respectively to the top side projection of this framework end face, covers this framework for this coating plate and makes two top side projections of press section and this framework end face of this pressing body stretch out in the central opening and first location hole of this top board respectively; Said pedestal also have one be positioned at the opposition side of storage tank back side wall; Back side wall also has two dorsal part projections; The said side plate of this coating plate is positioned at the both side edges of this top board and to extending below; The bottom of each side plate is equipped with an envelope sheet, and respectively is provided with second location hole corresponding to two dorsal part projections of this back side wall, and be provided with in said second location hole top inside shallow slot for said side plate along the inside bending of said shallow slot; And make said dorsal part projection fall into second location hole of said side plate, and each member is sealed the location by the envelope sheet of said side plate.

6. touch switch according to claim 5 is characterized in that: said pedestal also has a lateral wall around storage tank, and coats the leading edge of plate, the lateral wall and the pin copline of pedestal.