CN1822268A - Contact point structure of switch - Google Patents
Contact point structure of switch Download PDFInfo
- Publication number
- CN1822268A CN1822268A CN 200610004248 CN200610004248A CN1822268A CN 1822268 A CN1822268 A CN 1822268A CN 200610004248 CN200610004248 CN 200610004248 CN 200610004248 A CN200610004248 A CN 200610004248A CN 1822268 A CN1822268 A CN 1822268A
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- China
- Prior art keywords
- fixed terminal
- contact
- indivedual
- clamping part
- switch
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Abstract
The invention provided a contact structure of a switch in which a distance for insulation at an initial state can be enlarged, even in a product that cannot take a large range of movement on switching due to its small size. The contact structure is provided with a moving contact 4 having a plurality of holders 4a of a clip shape, and provided with a tapered part 4b bent outward at both edges of the holder 4a; a common fixed terminal 2a of a flat shape erected on an insulating base 1a and holding the moving contact 4 while sliding; and a pair of individual fixed terminals 2b connecting and disconnecting to the moving contact 4, and arranged separately on both sides of a same center line as that of the common fixed terminal 2a. Therein, the thickness of the plate of the common fixed terminal 2a is arranged smaller than that of the individual fixed terminal 2b, so that the neighborhood of the top of the tapered part 4b of the holder 4a abuts against the individual fixed terminal 2b, before the holder 4a contacts the individual fixed terminal 2b, when the contact is switched by sliding the moving contact 4 on the common fixed terminal 2a.
Description
Technical field
The present invention relates to the contact point structure of switch, relate in particular to a kind of contact point structure that is fit to the optimized switch of small-sized slide switch.
Background technology
Contact point structure as in the past switch, be well known that the identical fixed tabs of thickness of slab of the movable contact pin clamping writing board shape of clip shape, slide on fixed tabs by movable contact pin, carry out the structure (for example, with reference to change sharp document 1) of slide switch of the switching of contact.
The structure of this slide switch in the past as shown in Figure 6.Fig. 6 is the exploded perspective view of slide switch in the past.
Among the figure, slide switch in the past has: thus dispose a plurality of fixed tabs 35 substrate 30, have pinch hand 36a and the slide unit 36 that on substrate 30, moves along the orientation of fixed tabs 35 by the operation of this pinch hand 36a with keep by slide unit 36 and together move the movable contact pin 40 that selectively contacts with a plurality of fixed tabs 35 with this slide unit 36.
And slide unit 36 under the clip portion 41 of the movable contact pin 40 that is contained in recess 37 embeds state on the fixed tabs 35 that is installed on the substrate 30, remains on the substrate 30 slidably.
Above-mentioned slide switch moves to the left and right by making slide unit 36, central fixed tabs (shared contact pin) 35 and about fixed tabs (separation contact pin) 35 be connected by movable contact pin 40, make switch be open/close state.
(patent documentation 1) spy opens flat 8-161971 communique
But, in above-mentioned slide switch in the past, when switch is small-sized goods, can not obtains when switch switches under the situation of bigger amount of movement (stroke till opening is defined), because the clearance for insulation under the initial condition (distance between movable contact pin and the fixed tabs) is very little, so, when requiring anti-rated voltages such as 200V or 500V, be difficult in and obtain correspondence on the switch performance.
Summary of the invention
Therefore, the present invention is in order to address the above problem a little, even it is small-sized goods at switch that its purpose is to provide a kind of, can not obtain when switch switches in the goods of bigger amount of movement, also can increase the contact point structure of the switch of the insulation distance under the initial condition.
In order to solve above-mentioned problem, the contact point structure of the switch of the 1st technical scheme of the present invention, comprise: have the clamping part of a plurality of clip shape and be provided with travelling contact in the both sides of the edge of this clamping part to the rake of foreign side's expansion, be arranged on the insulation base station with setting and slide keep the shared fixed terminal of the writing board shape of described travelling contact, with separately be provided in this shared fixed terminal on same center line both sides and with contact indivedual fixed terminals of the pair of plates shape of separating of described travelling contact; Form the thickness of slab of described shared fixed terminal thinner than the thickness of slab of described indivedual fixed terminals, when described travelling contact slides on described shared fixed terminal and carries out contact when switching,, contacts with described indivedual fixed terminals near the rake front end of described clamping part with before described indivedual fixed terminals contact at described clamping part.
And, structure as the 2nd technical scheme, it is the thickness of slab that forms described shared fixed terminal, make that the distance between the rake front end of described clamping part and the described indivedual fixed terminal and the switching amount of movement of described travelling contact are roughly the same when described travelling contact is kept by described shared fixed terminal.
And, structure as the 3rd technical scheme, be that height with described shared fixed terminal forms greatlyyer than the height of described indivedual fixed terminals, simultaneously, by a plurality of described clamping parts described travelling contact is clamped on the plate face of described shared fixed terminal, thereby keeps rake and described a pair of indivedual fixed terminals of described clamping part with the state that separates.
(invention effect)
As mentioned above, because the contact point structure of switch of the present invention, comprise: have the clamping part of a plurality of clip shape and be provided with travelling contact in the both sides of the edge of clamping part to the rake of foreign side's expansion, be arranged on the insulation base station with setting and slide keep the shared fixed terminal of the writing board shape of travelling contact, with separately be provided in the same center line of shared fixed terminal on both sides and with contact indivedual fixed terminals of the pair of plates shape of separating of travelling contact; Form the thickness of slab of shared fixed terminal thinner than the thickness of slab of indivedual fixed terminals, when travelling contact slides on shared fixed terminal and carries out contact when switching, at clamping part with before indivedual fixed terminals contact, contact with indivedual fixed terminals near the rake front end of clamping part, so, even when switch is small-sized goods, when switching, can not obtain under the situation of bigger amount of movement (stroke till opening is defined) by switch, because the open position when not changing the switch switching, just can increase the insulation distance between the travelling contact and fixed contact under the initial condition, so, can improve withstand voltage properties.
In addition, owing to form the thickness of slab of shared fixed terminal, make when travelling contact is kept by shared fixed terminal, the distance between the rake front end of clamping part and the indivedual fixed terminal and the switching amount of movement of travelling contact are roughly the same, so, according to the switching amount of movement of travelling contact, can increase the insulation distance between the travelling contact and fixed contact under the initial condition.
In addition, owing to form the height of shared fixed terminal bigger than the height of indivedual fixed terminals, simultaneously, travelling contact is clamped on the plate face of shared fixed terminal by a plurality of clamping parts, thereby keep rake and a pair of indivedual fixed terminal of clamping part with the state that separates, therefore, by simple structure, travelling contact is separated reliably from individual fixed contact, thereby can increase insulation distance.
Description of drawings
Fig. 1 is the exploded perspective view of switch that expression has the contact point structure of switch of the present invention.
Fig. 2 is partial cutaway is carried out in expression to the switch of contact point structure with a switch of the present invention in-built major part stereogram.
Fig. 3 is partial cutaway is carried out in expression to the switch of contact point structure with a switch of the present invention in-built major part stereogram.
Fig. 4 is the vertical view and the end view of expression contact portions of the present invention.
Fig. 5 is the cutaway view of expression contact portions of the present invention.
Fig. 6 is the exploded perspective view of slide switch in the past.
Among the figure: 1-housing, 1a-base station, 1b-incorporating section, 1c-guide portion, 1d-spring maintaining part, 1e-props up axial region, and 1f-engages teat, 2-fixed terminal, the shared fixed terminal of 2a-, 2b-other fixed terminal, 3a, the 3b-outside terminal, the 4-travelling contact, 4a-clamping part, 4b-rake, the 5-slide unit, 5a-contact maintaining part, 5b-engaging recessed part, the 6-helical spring, 7-action bars, 7a-central authorities base portion, 7b-bar portion, 7c-drive division, 8-cap assembly, 8a-installation foot, the 9-parts of screening, the 9a-inserting hole, 10-handles knob, 11-casing, 11a-pedestal part, the 11b-installation portion, 11c-through hole, 11d-locking protrusion.
Embodiment
Below, in Fig. 1 to Fig. 5, represented embodiments of the present invention.Fig. 1 is the exploded perspective view of switch that expression has the contact point structure of switch of the present invention, Fig. 2 is partial cutaway is carried out in expression to the part of the switch of contact point structure with a switch of the present invention in-built major part stereogram, Fig. 3 is the expression and the major part stereogram of the identical contact portions of Fig. 2, Fig. 4 is the figure of expression contact portions, (a) being vertical view, (b) is that end view, Fig. 5 are the cutaway views of the identical contact portions of expression.
Among the figure, housing 1 is that the insulating material by synthetic resin etc. constitutes, and has, and: the base station 1a of rectangular shape and extend at the upper face side of this base station 1a is provided with and the incorporating section 1b that side opening is a boxed-section shape.At the inner bottom part of this incorporating section 1b, be equipped with a plurality of fixed terminals 2.This fixed terminal 2 is formed by the conductive metal plate, by inlaying methods such as shaping, stands upright on the inner bottom part of incorporating section 1b and is buried underground by one.Described fixed terminal 2 has: be arranged on the shared fixed terminal 2a of central authorities and have certain interval and divide a pair of indivedual fixed terminal 2b, the 2b that is arranged in its both sides.
And distolateral in addition at described fixed terminal 15 extended outstandingly downwards from the bottom surface side of described base station 1a, form outside terminal 3a, 3b respectively.
And as shown in Figure 5, described fixed terminal 2 is formed writing board shape, and the thickness of slab size T1 of described shared fixed terminal 2a is thinner than the thickness of slab size T2 of a pair of described indivedual fixed terminal 2b, 2b.At this moment, in the present embodiment, the thickness of slab size T2 of a pair of indivedual fixed terminal 2b, 2b approximately forms 0.35mm, and on the other hand, the thickness of slab size T1 of shared fixed terminal 2a approximately forms 0.25～0.29mm.When forming described shared fixed terminal 2a, be the terminal material that thickness of slab is approximately 0.35mm to be carried out bending ram processing by methods such as punching presses, when forming indivedual fixed terminal 2b, partly implement compressive strain processing by the method for utilizing punching press from both sides to shared fixed terminal 2a, and form the thin-walled portion of about 0.25～0.29mm thickness of slab in the part.
And, shown in Fig. 4 (b), described shared fixed terminal 2a, its upright height dimension H1 that is provided with is than the height dimension H2 height of a pair of described indivedual fixed terminal 2b, 2b.In addition, on the plate face of described common fixed contact 2a, travelling contact 4 is sandwiched in middle and is in hold mode.
Travelling contact 4 is made of rubber-like conductive sheet metallic plate, comprising: clamping part 4a of a plurality of clip shape (in the present embodiment being 3) and the rake 4b (with reference to Fig. 5) that expands to foreign side at the place, two edges of this clamping part 4a.And described clamping part 4a contacts with a pair of described indivedual fixed terminal 2b, the 2b that are arranged on both sides by sliding on the plate face of described shared fixed terminal 2a, can constitute to be electrically connected, and carries out the switching of switch.
Peristome mounting cup parts 8 at the incorporating section of described housing 1 1b.These cap assembly 8 bending rams such as metallic plate with writing board shape form, and are fastened on the housing 1 by a plurality of installation foot 8a, and this installation foot 8a is arranged on four bights in the mode of the peristome of covering incorporating section 1b.
In addition, in the outside of described incorporating section 1b and described cap assembly 8, cover the parts 9 of screening that are used to cover its integral body are installed, these parts 9 of screening have flexual insulating material by rubber etc. and constitute, and form the bag shape that side below has opening.And, side in the above, the 7b of bar portion that is provided with described action bars 7 inserts logical inserting hole 9a, and the front end from the outstanding 7b of bar portion of this inserting hole 9a is equipped with by what insulating material such as identical synthetic resin formed and handles knob 10.
By this parts 9 of screening are set, can prevent that foreign matters such as dust from entering the described incorporating section 1b that is equipped with contact portion.
This casing 11 is installed in the upper face side of housing 1, at this moment, covers the parts 9 of screening in the outside that is installed in described incorporating section 1b, inserts and leads in the through hole 11c of pedestal part 11a, described action bars 7 and handle knob 10 outstanding to the top of through hole 11c.And, a pair of base station 1a with housing 1 relative to side surface part on, be provided with outstanding engaging teat 1f to foreign side, the locking protrusion 11d of described installation portion 11b is fastened on this engaging teat 1f, falls casing 11 and is installed on the housing 1.
Below, based on Fig. 4 and Fig. 5, the change action of the make and break contact portion of above-mentioned formation is described.
At first, be positioned at action bars 7 under the initial condition of middle position, slide unit 5 is positioned at middle position by the elastic force of helical spring 6, and travelling contact 4, each the clamping part 4a by its clip shape all are clamped on the plate face of shared fixed terminal 2a and are held.At this moment, in the present embodiment as shown in Figure 5, with about the rake 4b front end of clamping part 4a and the roughly the same mode of switching amount of movement L2 of the distance L 1 between indivedual fixed terminal 2b and travelling contact 4, form the thickness of slab of shared fixed terminal 2a.Under this state, switch is in closed condition.
At this moment, the switching amount of movement L2 of travelling contact 4 is represented as clamping part 4a by travelling contact 4 and slides on the plate face of shared fixed terminal 2a and make among clamping part 4a or the rake 4b one the contacted distance in plate face end with indivedual fixed terminal 2b of left and right sides any one party.In addition, in the present embodiment, the thickness of slab size T2 of indivedual fixed terminal 2b approximately forms 0.35mm, the thickness of slab size T1 of shared fixed terminal 2a approximately forms 0.25～0.3mm, above-mentioned distance L 1 approximately is set to 0.25mm, and in addition, amount of movement L2 approximately is set to 0.25mm.
And, at this moment, the height dimension H1 of shared fixed terminal 2a, form than the height dimension H2 of a pair of indivedual fixed terminal 2b that are provided in both sides big (height), be clamped in by a plurality of clamping part 4a at travelling contact 4 under the state on the plate face of shared fixed terminal 2a, the rake 4b of clamping part 4a and a pair of indivedual fixed terminal 2b keep the state that separates.
If action bars 7 from this state left or right toppled over operation, then along with this operation, the elastic force of slide unit 5 opposing helical springs 6 and to the left and right any direction slide and move.At this moment, travelling contact 4 also together moves with slide unit 5, the direction of any one indivedual fixed terminal 2b moves to the left and right from the plate face of central fixed terminal 2a, makes travelling contact 4 contact with the indivedual fixed terminal 2b that set on moving direction, and then switch becomes open mode.
At this moment, because the thickness of slab T1 of shared fixed terminal 2a forms thinlyyer than the thickness of slab T2 of indivedual fixed terminal 2b of pair of right and left, so, carry out when sliding on the plate face of travelling contact 4 at shared fixed terminal 2a when contact switches, with before indivedual fixed terminal 2b contacts, near the rake 4b front end of clamping part 4a and individually fixed terminal 2b contact at clamping part 4a.
If from the topple over operation of this state releasing to action bars 7, then action bars 7 and slide unit 5 are returned to initial middle position by the elastic force (restoring force) of helical spring 6, and with this, travelling contact 4 also moves to the middle position on the shared fixed terminal 2a plate face, leave with indivedual fixed terminal 2b, make switch become closing state, thereby be returned to initial state.
Contact point structure according to the switch of the invention described above, clamping part 4a with a plurality of clip shape, and comprise: be provided with travelling contact 4 in the both sides of the edge of this clamping part 4a to the rake 4b of foreign side's expansion, with the shared fixed terminal 2a of the writing board shape that slide to keep this travelling contact 4, and separately be provided on the center line identical with this shared fixed terminal 2a both sides and with indivedual fixed terminal 2b of the pair of plates shape of travelling contact 4 contact separations; Form the thickness of slab T1 of described shared fixed terminal 2a thinner than the thickness of slab T2 of described indivedual fixed terminal 2b, when described travelling contact 4 slides on described shared fixed terminal 2a and carries out contact when switching,, contacts with described indivedual fixed terminal 2b near the rake 4b front end of described clamping part 4a with before described indivedual fixed terminal 2b contact at described clamping part 4a.
And, falling when described travelling contact 4 remains on the described shared fixed terminal 2a, because the roughly the same mode of switching amount of movement L2 with rake 4b front end and distance L 1 between described indivedual fixed terminal 2b and the described travelling contact 4 of described clamping part 4a, form the thickness of slab T1 of described shared fixed terminal 2a, so, according to the switching amount of movement L2 of described travelling contact 4, can increase the insulation distance between the travelling contact 4 and fixed contact 2 under the initial condition (=L1).
In addition, the height H 1 with described shared fixed terminal 2a form in the height H 2 big (height) than described indivedual fixed terminal 2b, owing to described travelling contact 4 is clamped on the plate face of described shared fixed terminal 2a by a plurality of clamping part 4a, thereby the rake 4b and a pair of described indivedual fixed terminal 2b that keep described clamping part 4a with the state that separates, so, by simple structure, described travelling contact 4 is separated reliably from described individual fixed contact 2b, thereby can increase the insulation distance between travelling contact 4 and the fixed contact 2.
Therefore, even when switch is small-sized goods, can not obtains when switch switches under the situation of bigger amount of movement (stroke till opening is defined), because the open position when not changing switch and switching just can increase the insulation distance between the travelling contact 4 and fixed contact 2 under the initial condition, so, can improve withstand voltage properties.
Claims (3)
1. the contact point structure of a switch is characterized in that, comprising:
Have the clamping part of a plurality of clip shape and be provided with travelling contact in the both sides of the edge of this clamping part to the rake of foreign side's expansion, be arranged on the insulation base station with setting and slide keep the shared fixed terminal of the writing board shape of described travelling contact, with separately be provided in this shared fixed terminal on same center line both sides and with contact indivedual fixed terminals of the pair of plates shape of separating of described travelling contact; Form the thickness of slab of described shared fixed terminal thinner than the thickness of slab of described indivedual fixed terminals, when described travelling contact slides on described shared fixed terminal and carries out contact when switching,, contacts with described indivedual fixed terminals near the rake front end of described clamping part with before described indivedual fixed terminals contact at described clamping part.
2. the contact point structure of switch according to claim 1, it is characterized in that, form the thickness of slab of described shared fixed terminal, make that the distance between the rake front end of described clamping part and the described indivedual fixed terminal and the switching amount of movement of described travelling contact are roughly the same when described travelling contact is kept by described shared fixed terminal.
3. the contact point structure of switch according to claim 1, it is characterized in that, form the height of described shared fixed terminal bigger than the height of described indivedual fixed terminals, simultaneously, by a plurality of described clamping parts described travelling contact is clamped on the plate face of described shared fixed terminal, thereby keeps rake and described a pair of indivedual fixed terminals of described clamping part with the state that separates.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005038021A JP2006228467A (en) | 2005-02-15 | 2005-02-15 | Contact structure of switch |
| JP2005038021 | 2005-02-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1822268A true CN1822268A (en) | 2006-08-23 |
| CN100458993C CN100458993C (en) | 2009-02-04 |
Family
ID=36923492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100042480A Active CN100458993C (en) | 2005-02-15 | 2006-02-13 | Contact point structure of switch |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006228467A (en) |
| CN (1) | CN100458993C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6268133B2 (en) | 2015-09-08 | 2018-01-24 | トヨタ自動車株式会社 | Power transmission device |
| JP6853151B2 (en) * | 2017-09-26 | 2021-03-31 | アルプスアルパイン株式会社 | Stand position detector |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS608355Y2 (en) * | 1979-12-31 | 1985-03-25 | 日本開閉器工業株式会社 | Pin terminal type switch |
| JPS63308825A (en) * | 1987-06-10 | 1988-12-16 | Matsushita Electric Ind Co Ltd | Push-button switch |
| JPH08161971A (en) * | 1994-12-07 | 1996-06-21 | Misaki Denshi Kogyo Kk | Slide switch |
| JP3596971B2 (en) * | 1995-10-18 | 2004-12-02 | アルプス電気株式会社 | Slide operation type switch |
| JP3544778B2 (en) * | 1996-02-28 | 2004-07-21 | アルプス電気株式会社 | Slide operation type switch |
-
2005
- 2005-02-15 JP JP2005038021A patent/JP2006228467A/en not_active Withdrawn
-
2006
- 2006-02-13 CN CNB2006100042480A patent/CN100458993C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN100458993C (en) | 2009-02-04 |
| JP2006228467A (en) | 2006-08-31 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Tokyo, Japan, Japan Patentee after: Alpine Alpine Company Address before: Tokyo, Japan, Japan Patentee before: Alps Electric Co., Ltd. |