CN101083175B

CN101083175B - Switch

Info

Publication number: CN101083175B
Application number: CN200610156211XA
Authority: CN
Inventors: 小林谦一; 伊藤诚康
Original assignee: SMK Corp
Current assignee: SMK Corp
Priority date: 2006-06-01
Filing date: 2006-12-21
Publication date: 2010-05-19
Anticipated expiration: 2026-12-21
Also published as: TWI344162B; TW200802458A; CN101083175A; KR20070115562A; JP4202372B2; KR100966183B1; JP2007323968A

Abstract

A switch, which is arranged with a central electrode and side electrode in a box with inserting form, and contains concave part acceptance contact piece on the contacting piece of the box, the end of the contacting piece contacts the side electrode all the time, wherein, the central part contacts or not from the central electrode by means of the advance and retreat of a key-press, also to make the contacting piece enter by means of the advance and retreat of the key-press so as to connect and cut off the central electrode and the side electrode. The side electrode is arranged with a side contact part contacting the contact piece; a vertical part bend along the inner wall of the contact piece acceptance concave part of the box from one body of the side of the contact part. By means of the present invention, the whole shape has only certain mm, the electrode is as thin as a wafer without crimpling processing, and also the invention can eliminate resin overcast and implement reliable electric connection.

Description

Switch

Technical field

The present invention relates to a kind of switch, can in mobile phone and other miniaturized electronics, prevent from when the fixed electrode insertion is formed into box body, to cover the problem that causes by resin.

Background technology

A kind of switch is arranged, as shown in Figure 4, when substrate 12 shapes that form by plastics etc. as housing, form as the fixed electrode (patent documentation 1) of contre electrode 13 with lateral electrode 14 by inserting to be shaped.

This switch 10 is to form contre electrode 13 and lateral electrode 14 on insulating properties substrate 12 in the recess by inserting shaping, and configuration bowl template spring 15 down on these fixed electrodes, and mounting button 18 backs surround fixing with crown cap 20 on this conductivity leaf spring 15, therefore be to utilize the jut 19 of button 18 to push above-mentioned conductivity leaf spring 15 and with contre electrode 13 and lateral electrode 14 conductings, push the switch that the recuperability of conductivity leaf spring 15 just makes button 18 restore in case remove.

[patent documentation 1] Japanese kokai publication hei 5-120953 communique

The width that is used for the switch 10 of this mobile phone, other miniaturized electronics has only 3～4mm, and the thickness of fixed electrode is about 0.2mm, as thin as a wafer, so when the plastics forming of substrate 12, if contre electrode 13 and lateral electrode 14 insertions are configured as one, will be as Fig. 5 (a) or (b), plastics flow into plastics system substrate 12 resin covering 60 take place with the boundary member of

metallic electrode

13,14.

More specifically, shown in Fig. 5 (a), metallic electrode 14 can produce a little burr in following side corner sections when punch process, so when making these burr carry out plastics forming up, at the boundary member A that the burr that metallic electrode 14 ends are arranged exist, resin covers less.Yet, from the contact site on the lateral electrode 14 14 continuously to portion of terminal 14a and the boundary member B of the plastics system of imbedding substrate 12 resin can take place cover 60, can cause so-called

lateral electrode

14 and 15 loose contacts of conductivity leaf spring.

In the example shown in this Fig. 5 (a), owing to be contact site 14b to be bloated by compression process, so it is fewer that resin covers 60 amount, but the step that contact site 14b is bloated by compression process must be arranged, so it is very complicated to process the process of this switchette accurately.

For this reason, if image pattern 5 (b) like that only reliably exposes contact site 14b by bending process, just need not carry out above-mentioned compression process, so handling ease.Yet, the boundary member B in the plastics system of imbedding substrate 12, more resin covers 60 in the time of can producing than compression processing, causes 15 of lateral electrode 14 and conductivity leaf springs to contact bad.

Summary of the invention

The object of the present invention is to provide that a kind of switch is little, electrode switch as thin as a wafer, need not carry out compression process, can eliminate resin and cover and be electrically connected reliably.

The switch of technical solution of the present invention 1 is to insert the mode that is shaped contre electrode and lateral electrode to be installed in the box body, and the contact chip housing recess at above-mentioned box body is taken in contact chip, the end of this contact chip contacts with above-mentioned lateral electrode all the time, its central portion utilize button advance and retreat actions and with above-mentioned contre electrode contact or separate, utilize the advance and retreat action of above-mentioned button and above-mentioned contact chip is got involved, so that conducting between above-mentioned contre electrode and the lateral electrode, disconnection, it is characterized by, above-mentioned lateral electrode possesses and has: the side contacts portion that contacts with above-mentioned contact chip all the time; And from this side contacts portion integratedly along the rising portions of the inwall bending of the contact chip housing recess of above-mentioned box body.

Better is to form recess (technical scheme 2) along the bending part between above-mentioned side contacts portion and above-mentioned rising portions.

Also can be on above-mentioned rising portions opposite with above-mentioned side contacts portion edge portion is bent to form horizontal part (technical scheme 3).

The invention effect

The switch of technical scheme 1 is to insert the mode that is shaped contre electrode and lateral electrode to be installed in the box body, and the contact chip housing recess at above-mentioned box body is taken in contact chip, the end of this contact chip contacts with above-mentioned lateral electrode all the time, its central portion utilize button advance and retreat actions and with above-mentioned contre electrode contact or separate, utilize the advance and retreat action of above-mentioned button and above-mentioned contact chip is got involved, so that conducting between above-mentioned contre electrode and the lateral electrode, disconnection, because above-mentioned lateral electrode has: the side contacts portion that contacts with above-mentioned contact chip all the time; And from this side contacts portion integratedly along the rising portions of the inwall bending of the contact chip housing recess of above-mentioned box body, so can not produce the situation that resin covers in the side contacts portion of lateral electrode, and can promote switch conducting, disconnect performance.In addition, owing to need only carry out bending process to the rising portions that erects from side contacts portion one, and do not need compression process, so it is simple to be used in the manufacturing of switch of miniature electric machine, and precision is higher.

The switch of technical scheme 2 is to form recess along the bending part of above-mentioned side contacts portion and above-mentioned rising portions, so not only increased the contact area between side contacts portion and the contact chip, even and resin also can form resin during from the rising portions side inflow and accumulate portion, prevent that resin from flowing to above the side contacts portion and cause harmful effect.

The switch of technical scheme 3 is to be bent to form horizontal part with the opposite edge portion of above-mentioned side contacts portion on above-mentioned rising portions, so even take place also can prevent positively that resin from flowing into the inner face of rising portions when resin covers in the upper end of for example rising portions.

Description of drawings

Fig. 1 is the vertical profile end view of an embodiment of expression switch of the present invention.

Fig. 2 (a) (b) (c) is different routine cutaway views of representing the lateral electrode 29 of switch of the present invention respectively (d).

Fig. 3 is the exploded perspective view of expression switch one embodiment of the present invention.

Fig. 4 is the vertical profile front view of existing switch 10.

Fig. 5 (a) is the cutaway view of the various lateral electrodes 14 different examples of the existing switch 10 of expression (b).

[main symbol description]

10. push-button switch 11. tellites 12. substrates

13. contre electrode 14. lateral electrodes 15. conductivity leaf springs

16. distance piece 17. loam cakes 18. buttons

19. jut 20. crown caps 21. electrode welding edges

22. the ground connection dual-purpose is fixing with welding edge 23. breach 25. push-button switches

26. tellite 27. box bodys 28. contre electrodes

28a. portion of terminal 28b. central authorities contact site 29. lateral electrodes

29a. the portion of terminal 29b. side contacts 29c. of portion rising portions

29d. recess 29e. horizontal part 29f. embedding part

30. contact chip 31. dustproof thin slice 32. buttons

33. crown cap 34. contact chip housing recess 35. terminal breach

36. 38. stator portions of assembling ditch 37. operation strip portions

39. 41. push projection portions of guiding body 40. key button portions

42. front face 43. top plate portions 44. base plate

45. side plate 46. key button through holes 47. projecting strip parts

48. expanding, alignment tabs portion 49. drives curved tabs portion 50. location holes

51. the place ahead is the fixing welding edge in welding edge 52. sides fixedly

53. the rear is welding edge fixedly

54. electrode welding edge 55. scolding tin 56. gaps

57. jut 58. sandwiches sheet 60. resins and covers

Embodiment

Optimal morphology of the present invention is to adopt following switch: to insert the mode that is shaped contre electrode and lateral electrode are installed in the box body, and the contact chip housing recess at above-mentioned box body is taken in contact chip, the end of this contact chip contacts with above-mentioned lateral electrode all the time, its central portion utilize button advance and retreat actions and with above-mentioned contre electrode contact or separate, utilize the advance and retreat action of above-mentioned button and above-mentioned contact chip is got involved, so that conducting between above-mentioned contre electrode and the lateral electrode, disconnection, above-mentioned lateral electrode possesses and has: the side contacts portion that contacts with above-mentioned contact chip all the time; And from this side contacts portion integratedly along the rising portions of the inwall bending of the contact chip housing recess of above-mentioned box body.

Better is to form recess along the bending part between above-mentioned side contacts portion and above-mentioned rising portions.Also can be on above-mentioned rising portions opposite with above-mentioned side contacts portion edge portion is bent to form horizontal part.Can more effectively reach purpose of the present invention by above-mentioned additional structure.

Below in conjunction with Fig. 1 to 3 explanation embodiments of the invention.

Among Fig. 3 (a), switch 25 of the present invention be by: box body 27, one be installed in contre electrode 28 and lateral electrode 29 on this box body 27, be accommodated in the contact chip 30 of the contact chip housing recess 34 of above-mentioned box body 27, overlayed on above-mentioned box body 27 fronts dustproof thin slice 31, push the button 32 of above-mentioned contact chip 30 and these parts all be overmolding to incorporate crown cap 33 and constituted.

Above-mentioned box body 27 is made of insulating properties materials such as plastics, forms the contact chip housing recess 34 of growing crosswise in front, forms terminal breach 35 in four bights of back, and forms combination ditch 36 in two sides.In this box body 27, contre electrode 28 and lateral electrode 29 one are inserted shaping.

Wherein, contre electrode 28 is shown in Fig. 3 (C), form the T font by central contact site 28b and both sides portion of terminal 28a, the contact site 28b of central authorities exposes the central authorities in above-mentioned contact chip housing recess 34, and the center partly bloats, portion of terminal 28a is outstanding from the top and bottom of box body 27, and the back that is shaped is bent into parallel with the top and bottom of box body 27 in terminal breach 35 parts towards the rear.

Above-mentioned lateral electrode 29 has special tectonic of the present invention, form the portion of terminal 28a formation π font of one with two lateral electrodes 29 that separate at certain intervals and with them, the above-mentioned side contacts 29b of portion exposes from the bottom of above-mentioned contact chip housing recess 34, be the L font end face continuous with the two side, portion of terminal 29a is outstanding from the top and bottom of box body 27, is bent into parallel with the top and bottom of box body 27 at terminal towards the rear with breach 35 parts.

The more detailed structure of the above-mentioned side contacts 29b of portion is described below in conjunction with Fig. 2.

At Fig. 5 (a) or in the prior art (b), continuously to portion of terminal 14a, part B imbeds in the plastics system substrate 10 in the border from the contact site 14b on the lateral electrode 14b.

And the basic configuration of the side contacts 29b of portion of the present invention is shown in Fig. 2 (a), if when making the shape of the 29b of side contacts portion of the part formation level that contacts with the stator portion 38 of contact chip 30, then is bent into L font end face integratedly, thereby forms rising portions 29c.As a result, resin covers 60 even for example take place at the boundary member C of 17 of the box bodys of rising portions 29 and upper end, also can not flow into along the inner face of rising portions 29c contact site 29b above.

Place, inflection point between above-mentioned horizontal side contact site 29b and rising portions 29c, shown in Fig. 2 (b), by forming recess 29d, not only increased contact area with stator portion 38, even and resin also can make resin accumulate during from rising portions 29c side inflow, can prevent that resin from flowing into above the 29b of side contacts portion and produce harmful effect.

The upper end of above-mentioned rising portions 29c is further bent, shown in Fig. 2 (c),, cover 60, also can prevent that it from flowing into the inner face of rising portions 29c even resin takes place in the upper end of above-mentioned rising portions 29c by forming horizontal part 29e.

At Fig. 2 (a) (b) in (c), the end A of the side contacts portion 29 of level flushes with the bottom of above-mentioned contact chip housing recess 34, and the example shown in Fig. 2 (d) is to form crooked embedding part 29f by bending process at the end A of the side contacts 29b of level, and it is embedded to the bottom of above-mentioned contact chip housing recess 34, and make the top bottom of the 29b of side contacts portion high slightly than contact chip housing recess 34.Adopt such formation, can prevent more positively that at boundary point A resin from covering 60.

The metallic plate with conductivity and elastic force of above-mentioned contact chip 30 about by length x width x thickness=2.6 * 1.2 * 0.06mm constitutes, the whole bowl type that forms down, by cutting two ditches along length direction and form crooked operation strip portion 37 up, and form the stator portion 38 of decurvation in both sides in central authorities.

When this contact chip 30 is accommodated in the contact chip housing recess 34 of above-mentioned box body 27, the 29b of side contacts portion that the stator portion 38 of both sides is positioned in above-mentioned lateral electrode 29 goes up and does all the time to electrically contact, the top of operation strip portion 37 then with the central contact site 28b of contre electrode 28 across the gap and relative each other.

Above-mentioned dustproof thin slice 31 has electrical insulating property, and for having the soft thin slice of bonding agent, after contact chip 30 is accommodated in the contact chip housing recess 34 of above-mentioned box body 27, will prevent dust thin slice 31 to be bonded in the upper surface of box body 27 with bonding agent.

Manufacturings such as above-mentioned button 32 usefulness plastics, metal do not limit for material is special, have key button portion 40 outstanding in the front face side of elongated laminal guiding body 39, in the wings the then integrally formed cone shape push projection of side portion 41.This button 32 makes push projection portion 41 be positioned at the center of dustproof thin slice 31.

Above-mentioned crown cap 33 has conductivity, by the metallic plate about die-cut thickness 0.2mm such as punch press, and give bending process and form, wear key button through hole 46 for above-mentioned key button portion 40 forward-reverses at center with the front face 42 of above-mentioned dustproof thin slice 31 same size, and with the upper end of this front face 42 and bottom respectively bending towards the rear make top plate portion 43 and base plate 44, again with the both sides of front face 42 respectively bending towards the rear make side plate 45.The width of above-mentioned top plate portion 43 and base plate 44 as shown in Figure 1, and is roughly the same with the thickness of pressurization jut 41 with the guiding body 39 of above-mentioned button 32.Especially on base plate 44, shown in Fig. 3 (b), form 2 convex strip portions 47 that bloat towards the rear, on this convex strip portions 47 the guiding body 39 of the above-mentioned button 32 of mounting with, make the slyness advance and retreat of button 32, and fixedly form a little gap between the welding edge 51 at tellite 26 described later and the place ahead, prevent the scaling powder overflow of scolding tin.

In side formation down the alignment tabs portion 48 of above-mentioned side plate 45 towards above-mentioned base plate 44.But the shape that this alignment tabs portion 48 had both extended vertically downward, also can be shown in chain-dotted line level bending like that outwardly and form same plane with base plate 44.This side plate 45 forms sandwiching sheet 58 and can be entrenched in the assembling ditch 36 of above-mentioned box body 27 in a narrow margin on the way, sandwiches sheet 58 rears toward this again and prolongs and form the curved tabs portion 49 that opens that expands.This expansion is opened curved tabs portion 49 and is bent outwards into crank-like, and the following jut 57 that becomes with one side with above-mentioned base plate 44 is made in the lower end of leading section.

Below describe with regard to the assembling of each part of above-mentioned formation.

In box body 27, the upside of the portion of terminal 28a of the contre electrode 28 that insert to be shaped with box body 27 one and the portion of terminal 29a of lateral electrode 29 rearward bends or is cut off, and downside rearward bends, and contact chip housing recess 34 is in front taken in contact chip.Paste dustproof thin slice 31 in the front of box body 27.

Button 32 is chimeric and make key button portion 40 outstanding from key button through hole 46 from the rear of crown cap 33.And pack into from rear crown cap 33 and overlapping with key top board 32 of contact chip 30 and the box body 27 of dustproof thin slice 31 will be housed.Carry out this when packing into, open outwardly separately, so button 32 can be successfully chimeric with box body 27 because curved tabs portion 49 is opened in the expansion of the rearward end of the side plate 45 of both sides.

After button 32 and box body 27 is chimeric, under the top plate portion 42 of crown cap 33 and base plate 44 and dustproof thin slice 31 tight state of contact, the rearward end expansion of the side plate 45 of both sides is opened that curved tabs portion 49 inwards bends respectively and the assembling of finishing push-button switch 25.At this moment, open curved tabs portion 49 and bent because expand, thus can and the back of box body 27 between form a little gap 56.

Then, on above-mentioned tellite 26, on the position of the base plate 44 of mounting and fixing above-mentioned crown cap 33, be provided with fixedly welding edge 51 of the place ahead, fixedly the both sides of welding edge 51 form the location hole 50 that alignment tabs portion 48 inserts in this place ahead, and be provided with fixedly welding edge 52 of side, and central authorities' fixing welding edge 53 in rear of being provided for fixed protrusion 57 in the wings is provided with the electrode welding edge 54 of fixing above-mentioned portion of terminal 28a and portion of terminal 29a and making its electrical connection again in the both sides of this rear welding edge 53.

Fixedly fixedly welding edge 52, rear fixedly put and heat on welding edge 53, the electrode welding edge 54 with after each corresponding contraposition of push-button switch 25 welding edge 51, side in the location hole 50 of this tellite 26, the place ahead.Thus, the fixedly fixedly fixedly scolding tin fusion of welding edge 53, electrode welding edge 54 of welding edge 52, rear of welding edge 51, side of each the place ahead, and push-button switch 25 is fixing, be electrically connected simultaneously.

At this moment, on base plate 44 as Fig. 3 and shown in Figure 1, even the very thin thickness of crown cap 33, also can fix, and scolding tin 55 can flow into the gap below the convex strip portions 47, can prevent the evil of solder flux overflow with scolding tin 55 large tracts of land, and owing to can flow into more scolding tin 55, so can give firmly fixing.No matter alignment tabs portion 48 is perpendicular shape or horizontal shape, all can location hole 50 location, and in the side fixedly welding edge 52 can be fixed in large area by scolding tin 55.Expand the jut 57 of opening curved tabs portion 49 and be fixed on fixedly welding edge 53 of rear with scolding tin 55, but open 56 places, gap of curved tabs portion 49 and box body 27 back in expansion, as shown in Figure 2, scolding tin 55 enters because of the effect of hair system pipe phenomenon, thereby can be fixed on fixedly welding edge 53 places, rear in large area with scolding tin 55.

The planar portions that bends below of portion of terminal 28 and portion of terminal 29a contacts with electrode welding edge 54 and utilizes scolding tin 55 large tracts of land to fix.

Claims

1. switch, be contre electrode and lateral electrode to be installed in the box body to insert the mode that is shaped, and the contact chip housing recess at above-mentioned box body is taken in contact chip, the end of this contact chip contacts with above-mentioned lateral electrode all the time, its central portion utilize button advance and retreat actions and with above-mentioned contre electrode contact or separate, utilize the advance and retreat action of above-mentioned button and above-mentioned contact chip is got involved, so that conducting between above-mentioned contre electrode and the lateral electrode, disconnection, it is characterized by, above-mentioned lateral electrode has: the side contacts portion that contacts with above-mentioned contact chip all the time; And from this side contacts portion integratedly along the rising portions of the inwall bending of the contact chip housing recess of above-mentioned box body.

2. switch, be contre electrode and lateral electrode to be installed in the box body to insert the mode that is shaped, and the contact chip housing recess at above-mentioned box body is taken in contact chip, the end of this contact chip contacts with above-mentioned lateral electrode all the time, its central portion utilize button advance and retreat actions and with above-mentioned contre electrode contact or separate, utilize the advance and retreat action of above-mentioned button and above-mentioned contact chip is got involved, so that conducting between above-mentioned contre electrode and the lateral electrode, disconnection, it is characterized by, above-mentioned lateral electrode has: the side contacts portion that contacts with above-mentioned contact chip all the time; And from this side contacts portion integratedly along the rising portions of the inwall bending of the contact chip housing recess of above-mentioned box body, along the formation of the bending part between above-mentioned side contacts portion and above-mentioned rising portions recess.

3. switch, be contre electrode and lateral electrode to be installed in the box body to insert the mode that is shaped, and the contact chip housing recess at above-mentioned box body is taken in contact chip, the end of this contact chip contacts with above-mentioned lateral electrode all the time, its central portion utilize button advance and retreat actions and with above-mentioned contre electrode contact or separate, utilize the advance and retreat action of above-mentioned button and above-mentioned contact chip is got involved, so that conducting between above-mentioned contre electrode and the lateral electrode, disconnection, it is characterized by, above-mentioned lateral electrode has: the side contacts portion that contacts with above-mentioned contact chip all the time; And from this side contacts portion integratedly along the rising portions of the inwall bending of the contact chip housing recess of above-mentioned box body, edge portion opposite with above-mentioned side contacts portion on above-mentioned rising portions is bent to form horizontal part.