CN1107996A - Switching device - Google Patents
Switching device Download PDFInfo
- Publication number
- CN1107996A CN1107996A CN94117741A CN94117741A CN1107996A CN 1107996 A CN1107996 A CN 1107996A CN 94117741 A CN94117741 A CN 94117741A CN 94117741 A CN94117741 A CN 94117741A CN 1107996 A CN1107996 A CN 1107996A
- Authority
- CN
- China
- Prior art keywords
- leaf spring
- locking
- contact
- conductive plate
- public terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
- H01H5/04—Energy stored by deformation of elastic members
- H01H5/18—Energy stored by deformation of elastic members by flexing of blade springs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs
Landscapes
- Push-Button Switches (AREA)
- Slide Switches (AREA)
Abstract
The invention provides a switch device. A retaining cutout, which allows a first retaining projection of a common connection to pass through and whose one end surface can come into contact with the retaining projection is opened in a leaf spring. One end surface of the retaining cutout comes into contact with the first retaining projection immediately after a moving contact has come into contact with a stationary contact and, in the process, monitors the position of the leaf spring. This design makes it possible to produce a switching device of the rapidly reacting type which has no negative influence on its life when it is used under electrical load, even when the speed with which a sliding element is pressed into the device is large and which is suitable for various types of long and short movement paths of the sliding element with the same contact construction.
Description
The present invention relates to the quick-action type switching device as the button power switch of electronic device such as television set, wherein, when slide unit was pushed into device, leaf spring drove conductive plate, and bending is simultaneously finished the action of on/off contact-making switch with stretching.
This quick acting switching device is a kind of high swash of wave-lightweight button power switch.Known it be so to constitute as push-button switch so that it can stretch flat under no longitudinal tensile strain situation.As in the above-mentioned switching device, as the device that improves its applicability by the steering force that alleviates slide unit, the invention that has the applicant to apply for, for example: the practical new case publication number 4-55388 of Japan.
Do simple narration referring now to the invention of 4 to 8 pairs of prior aries of accompanying drawing.
Prior art quick-action type switching device composed as follows: housing 1; Embed in the housing 1 and have the fixed terminal 2a that part in the top forms; Be referred to as the public terminal 3 of center terminal in above-mentioned prior art, this public terminal 3 has the first locking protuberance 3a and the second locking protuberance 3b that embeds in the housing 1; Conductive plate 4 has moving contact 4a and aperture 4b, and this moving contact 4a is in an end of conductive plate, makes it with the fixed contact contact with separate from it, and this aperture 4b is arranged at the core of conductive plate 4; In order to the support plate 5 of supporting conductive plate 4, the one end aperture 4b edge locked of moving contact 4a side, and its other end locks protuberance 3a locking with first of public terminal 3; Leaf spring 6, its outward appearance have horn shape part 6a and seam shape locking otch 6b as shown in Figure 5, and under the condition of crossing over above-mentioned support plate 5 the other end, leaf spring 6 bendings are between the 4b edge, the aperture of moving contact offside and the second locking protuberance 3b; Slide unit 7 has cam 7a and 7b, and along housing 1 upper surface back and forth at the left of accompanying drawing 4 to sliding with right; Be used for automatically reset compression spring 8, this compression spring always promotes slide unit 7; And the framework 9 that is used for holding slidably slide unit 7.
The quick-acting mechanism that conductive plate 4, support plate 5 and leaf spring 6 form a whole, thereby the conductive plate 4 supported plates 5 that supported movably by the locking protuberance 3a and the 3b of public terminal 3 by support plate 5 and leaf spring 6 and the driving of leaf spring 6, conductive plate 4 is kept with the continuity of moving contact 4a and public terminal 3.Leaf spring 6 crosses the first locking protuberance 3a of public terminal, makes the lock tab of winning go out the 3a of portion loosely by the otch 6b of leaf spring, and therefore, the activity of leaf spring 6 is not limited to the first locking protuberance 3a.When slide unit was back and forth movable, cam 7a and 7b promoted leaf spring 6 and make its compression.When arriving rollback point with the compressed leaf spring 6 of scheduled volume, when (dead-centre position, at this dead point, leaf spring is compressed to maximum), conductive plate 4 moves automatically owing to the elongation of leaf spring.At this moment, whole quick-acting mechanism moves automatically, in accompanying drawing 4, and label 10 expression single action pins, this single action pin 10 is used for locking or unties this slide unit 7 by with housing 1 and slide unit 7 locking two ends; Label 11 expression single action pin push rods.
In other words, from being shown in 4 initial conditions of accompanying drawing, when the working portion 7c of the slide unit that outwards protrudes from housing 1 when accompanying drawing 4 rights are pushed into the device, cam 7a at first promotes the horn shape part 6a of leaf spring 6, make it become the state of accompanying drawing 6, and compressed then leaf spring 6 reaches the rollback point that is extended.Like this, quick-acting mechanism moves automatically, and just after moving beginning automatically, moving contact 4a abuts on the fixed contact 2a that is converted into "on" position.Immediately the horn shape part 6a of leaf spring 6 abuts cam 7b, to stop to move automatically of quick-acting mechanism, as shown in Figure 7.As the working portion 7c of the action forward of slide unit 7 when further pushing short distance of device again, cam 7b separates from the horn shape parts 6a of leaf spring 6, and conductive plate 4 is being that the center turns clockwise at moving contact 4a and fixed contact 2a near a P.Therefore, on the step 3c of the rearward end of conductive plate 4 near public terminal 3, and conductive plate 4 becomes lock-out state, as shown in Figure 8.At this moment, slide unit 7 also becomes lock-out state by means of single action pin 10.
When move forward and as the above-mentioned working portion 7c that is locked in the slide unit 7 of "on" position when further pushing in the device short distance again, by using their idle stroke, because the resilience of compression spring 8, this slide unit 7 moves towards the opposite direction that advances, because this lock-out state is ended by means of the effect of single action pin 10.When this return action, cam 7 upwards promotes the horn shape part 6a of leaf spring 6 to the left of accompanying drawing 8.Therefore, conductive plate 4 turns back to the home position shown in the accompanying drawing 4 according to the displacement of leaf spring 6, and in this return course, moving contact 4a separates with fixed contact 2a, thereby becomes off-position.
By the way, in this prior art quick-action switch device, be applied to the working portion 7c of slide unit 7 when strong pressing force, and the translational speed of slide unit 7 is greater than the automatic translational speed of the horn shape part 6a of leaf spring 6 when (being about 1 meter per second), horn shape part 6a is unable to catch up with cam 7b, does thereby make it not stop to move automatically of quick-acting mechanism with slide unit 7.That is to say that it can not allow angled portion 6a near cam 7a as shown in Figure 7.Therefore, moving automatically of quick-acting mechanism only just can stop (seeing accompanying drawing 8) in the conductive plate rearward end after the step 3c near public terminal 3.
When adopting aforesaid contact structure, establish the full stroke of slide unit 7 longer the time, as shown in Figure 9, cam 7b and horn shape part 6a so separate, so that automatically the moving and to be stoped by cam 7b of leaf spring 6, even also be like this in that slide unit is slowly pushed in the device.Therefore, the automatic shift action of quick-acting mechanism is had to by the rear end of the conductive plate 4 step 3c near public terminal 3 is prevented from.
Yet normally horn shape part 6a is prevented from because of abutting against on the cam 7b.And when automatically moving of quick acting mechanism stoped among the step 3c that end owing to the moving contact 4a offside of conductive plate 4 abuts against public terminal, owing to two contact 2a that are connected to each other bigger spring occurs with 4a and separating of other conductive connection part branch, thereby device is burnt out, therefore, when it used under the electric loading state, this situation produced serious harmful effect to the life-span of switching device.Simple speech, this prior art structure has such problem, and promptly when switching device used under the electric loading state, its life-span was easy to be reduced, unless slide unit 7 is carefully used always; Consider the life-span when it uses under the electric loading state, be difficult to prolong full stroke with the same contacts structure.
The object of the invention is: a kind of quick-action type switching device is provided, and when this device uses under the electric loading state, even when pressing operation speed is fast, to also having no adverse effects device lifetime; And this device is ready to various long and short strokes with the same contacts structure.
The present invention seeks to reach like this: the quick-action type switching device that is provided comprises: the fixed terminal with fixed contact; Conductive plate with aperture, one end are provided with and are used to make conductive plate with fixed contact contact or the moving contact that separates with it; Public terminal with the first locking protuberance and second locking protuberance, this public terminal supports described conductive plate versatilely with described two locking protuberances, so that keep the continuity with moving contact; Be used to support the support plate of conductive plate, the one end locks with the orifice edge of moving contact side, and its other end locks the protuberance locking with first of public terminal; Leaf spring, under the condition of crossing over support plate the other end, this leaf spring is crooked between the orifice edge of moving contact offside and the public terminal second locking protuberance, and with support plate coordinated drive conductive plate; Slide unit, has cam, this cam is used to push the part of leaf spring and compresses leaf spring according to reciprocating motion by cam, wherein, when arriving rollback point with the compressed leaf spring of scheduled volume and extending subsequently, conductive plate moves automatically, and wherein, the first locking protuberance that has the described public terminal of permission on leaf spring is from locking otch that wherein passes through and locking otch one end face that can be close proximity to described locking protuberance.And wherein, after described moving contact was with described fixed contact contact, the end face of described locking otch was immediately near the described first locking protuberance, so that control the position of described leaf spring.
The method of operation of switching device of the present invention is as follows:
As mentioned above, when switching device so constitutes, so that when an end face of leaf spring locking otch locks protuberance near first of the public terminal that passes through this otch, the action of moving automatically of quick-acting mechanism can stop by locked otch, and, the impact that quick-acting mechanism is accepted at this otch also can be changed and be external force, this external force is used for the second locking protuberance pushing leaf spring to public terminal, therefore, for between the contact and the separation between other conductive connecting element, can prevent the generation of unwelcome spring.And, when switching device so constitutes, so that when the cam that uses first of public terminal to lock protuberance replacement as above-mentioned slide unit stops the action of moving automatically of quick-acting mechanism, the action of moving automatically of quick-acting mechanism can be stoped safely when device uses under the electric loading state, simultaneously its life-span is soon influenced, even the speed of travel of slide unit is during greater than the speed of quick-acting mechanism, and even the full stroke of slide unit when being established longly, also be like this.
The present invention has good result, according to quick-action type switching device provided by the present invention, when quick-acting mechanism automatically move go to make the switch energising after, an end face of the locking otch of leaf spring abuts against on the first locking protuberance of public terminal immediately.Like this, switching device of the present invention has remarkable advantage: because big spring just is difficult to take place due to the separation between dividing of the separation between the contact and other conductive connection part; Enter the speed of housing when fast when pushing slide unit, also can not make switching device be subjected to bad influence when under the electric loading state, using, because the position of leaf spring is not controlled by the slide unit that is used for stopping leaf spring as prior art; Device of the present invention can be ready to various long and short strokes by just same contact structure.
The present invention is described in detail below in conjunction with drawings and Examples.
Accompanying drawing 1 is the sectional view according to the switching device major part of one embodiment of the present of invention;
Accompanying drawing 2 is the leaf spring stereograms that are used for embodiment;
Accompanying drawing 3 is the sectional views according to the switching device major part of another embodiment of the present invention;
Accompanying drawing 4 is sectional views of prior art switching device switching device under operational circumstances;
Accompanying drawing 5 is the leaf spring stereograms that are used for prior art;
Accompanying drawing 6 illustrates the just major part sectional view of state before quick-acting mechanism moves automatically of prior art switching device;
Accompanying drawing 7 illustrates the major part sectional view that quick-acting mechanism in the prior art stops automatic shift action state;
Accompanying drawing 8 illustrates the major part sectional view of state when quick-acting mechanism turns to maximum in the prior art;
Accompanying drawing 9 illustrates in the prior art the just major part sectional view of the state before quick-acting mechanism advances automatically;
Used label is as follows in the accompanying drawing:
2 ... fixed terminal 2a ... fixed contact
3 ... public terminal 3a ... the first locking protuberance
3b ... the second locking protuberance 4 ... conductive plate
4a ... moving contact 4b ... the aperture
5 ... support plate 6 ... leaf spring
6a ... horn shape part 6c ... the locking otch
6d ... end face 7 ... slide unit
7a, 7b ... cam
Accompanying drawing 1 is to be the stereograms that are used for this embodiment leaf spring according to switching device major part sectional view of one embodiment of the present of invention and accompanying drawing 2.Mark like that to 9 according to the accompanying drawing 4 that is used to describe prior art, on same parts, use identical label respectively.
The quick-action type switching device that is shown in accompanying drawing 1 has: housing 1; Embed housing 1 and have the fixed terminal 2 that end thereon forms fixed contact 2a; Have the first locking protuberance 3a and the second locking protuberance 3b and be embedded into public terminal 3 in the housing 1; The conductive plate 4 that on the one end, has the moving contact 4a that is used to that it is contacted with fixed contact 2a or separates with it, aperture 4b heart part located therein; Be used to support the support plate 5 of conductive plate 4, its end locks mutually with the 4b edge, aperture of moving contact side, and its other end locks protuberance 3a locking with first of public terminal; Its appearance leaf spring 6 as shown in Figure 2, the seam shape locking otch 6c that it has horn shape part 6a and is used to lock, and it locks between the protuberance 3b crooked at the 4b edge, aperture and second of moving contact 4a offside under the condition of crossing over above-mentioned support plate 5 the other end; Have cam 7a and 7b, and press the reciprocating slide unit 7 of left and right direction of accompanying drawing 1 along housing 1 upper surface; Be used for automatically reset compression spring (not shown), it always promotes slide unit 7; And the framework 9 that is used for holding slidably slide unit 7.By conductive plate 4, support plate 5 and leaf spring 6 integrant quick-acting mechanisms, thereby driven by the locking protuberance 3a of public terminal 3 and conductive plate 4 supported plates 5 and leaf spring 6 that 3b supports movably by support plate 5 and leaf spring 6, and conductive plate 4 contact 4a and public terminal 3 keep continuitys simultaneously.When the slide unit reciprocating motion, cam 7a or 7b push leaf spring 6, so that make its compression.When reaching rollback point with the compressed leaf spring 6 of scheduled volume, because leaf spring 6 elongations, conductive plate 4 moves automatically.At this moment, whole quick-acting mechanism moves automatically.
Cross the leaf spring 6 of the first locking protuberance 3a of public terminal, make locking protuberance 3a pass through its locking otch 6c.Otch 6c constitutes an end face 6d near the precalculated position of angled portion 6a.Particularly, this end face 6d so is provided with, thus leaf spring 6 move to make moving contact 4a with fixed contact 2a contact after, be close proximity to the first locking protuberance 3a immediately.Like this, when leaf spring 6 owing to being subjected to pushing of slide unit 7 to be compressed to rollback point in off-position, after it changed to "on" position, the leaf spring 6 that is close proximity to the first locking protuberance was immediately by its locking, by means of this, the automatic shift action of quick-acting mechanism is stopped.
That is to say that when the slide unit operation part (not shown) of outwards giving prominence to from housing 1 was pushed into the housing 1, cam 7a at first pushed the angled portion 6a of leaf spring 6, then, make compressed leaf spring 6 elongations that reach rollback point.Like this, quick-acting mechanism moves automatically, and just after moving beginning automatically, the moving contact 2a that is close proximity to moving contact 4a is converted into "on" position, subsequently, be close proximity to the end face 6d of the leaf spring 6 locking otch 6c on the public terminal 3 first locking protuberance 3a immediately by its locking, as shown in Figure 1.Like this, the automatic shift action of quick-acting mechanism is prevented, and conductive plate 4 also becomes blocked state.At this moment, by means of the effect of single action pin, slide unit 7 also becomes blocked state.
When move forward and as above-mentioned "on" position under the operation part of blocked slide unit 7 when further in device, pushing a small distance by utilizing its idle stroke, because the resilience of above-mentioned compression spring makes slide unit 7 move to the opposite direction that pushes, because by means of the effect of single action pin (not shown), this lock-out state is freed.In this moves backward, cam 7b to the left of Fig. 1 to the horn shape part 6a that pushes leaf spring 6.Therefore, conductive plate 4 turns back to initial position according to the displacement of leaf spring 6, and in this return course, moving contact 4a separates from fixed contact 2a, and becomes off-position.
According to the foregoing description, when quick-acting mechanism automatically move make switch connection after, the end face 6d of leaf spring 6 locking otch 6c stops automatic migration near the first locking protuberance 3a of public terminal 3 immediately.Therefore, close corresponding to this, the suffered impact of quick-acting mechanism is a kind of external force, and this external force is used for pushing leaf spring 6 to the second locking protuberance 3b of public terminal 3, therefore, separate the big spring that produces and to reduce owing to what contact 2a and 4a and other conductive connection part divided.And, when moving forward owing to it, leaf spring 6 is prevented from because of the first locking protuberance 3a that is close proximity to public terminal 3, so that when stoping the auto-action of quick-acting mechanism, the auto-action of quick-acting mechanism can be prevented under the situation in life-span of device safely being used for electric loading state following time and influencing less, even, when slide unit 7 is pressed in the device strongly, when causing the speed of moving it greater than the auto-action speed of quick-acting mechanism also is like this, and the translational speed of saying nothing of slide unit 7 has been lower than the auto-action speed of quick-acting mechanism.Therefore, when under the electric loading state, using, this switching device reach good stability and the life-span long, and accomplish quality improvement.
Accompanying drawing 3 is major part sectional views of another embodiment of the present invention switching device.In the accompanying drawing with accompanying drawing 1 in identical parts mark with same label.
Switching device shown in the accompanying drawing 3 is an example, and wherein, although adopt the same structure of the foregoing description, and the full stroke of set slide unit 7 is long.Between the cam 7a of slide unit 7 and 7b, exist broad space.Yet it is same as the previously described embodiments to stop this point by means of the first locking protuberance 3a with public terminal 3 near the end face 6d that makes leaf spring 6.Therefore, moving automatically when doing to use under the electric loading state of quick-acting mechanism can stop influencing little ground safety device lifetime.In brief, adopting the advantage of the contact structure of present embodiment and the foregoing description is to allow to be ready to various long and short strokes, and when using under the electric loading state, need not to consider the life-span of device.
Claims (1)
1, switching device is characterized in that comprising: the fixed terminal with fixed contact; Conductive plate with aperture, one end are provided with and are used to make conductive plate with fixed contact contact or the moving contact that separates with it; Public terminal with the first locking protuberance and second locking protuberance, this public terminal supports described conductive plate versatilely with described two locking protuberances, so that keep the continuity with moving contact; Be used to support the support plate of conductive plate, the one end locks with the orifice edge of moving contact side, and its other end locks the protuberance locking with first of public terminal; Leaf spring, under the condition of crossing over support plate the other end, this leaf spring is crooked between the orifice edge of moving contact offside and the public terminal second locking protuberance, and with support plate coordinated drive conductive plate; Slide unit, has cam, this cam is used to push the part of leaf spring and compresses leaf spring according to reciprocating motion by cam, wherein, when arriving rollback point with the compressed leaf spring of scheduled volume and extending subsequently, conductive plate moves automatically, and wherein, the first locking protuberance that has the described public terminal of permission on leaf spring is from locking otch that wherein passes through and locking otch one end face that can be close proximity to described locking protuberance.And wherein, after described moving contact was with described fixed contact contact, the end face of described locking otch was immediately near the described first locking protuberance, so that control the position of described leaf spring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP278386/93 | 1993-11-08 | ||
| JP5278386A JP3008751B2 (en) | 1993-11-08 | 1993-11-08 | Switch device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1107996A true CN1107996A (en) | 1995-09-06 |
| CN1036363C CN1036363C (en) | 1997-11-05 |
Family
ID=17596623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94117741A Expired - Fee Related CN1036363C (en) | 1993-11-08 | 1994-11-08 | Switching device |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP3008751B2 (en) |
| KR (1) | KR0137410B1 (en) |
| CN (1) | CN1036363C (en) |
| DE (1) | DE4439933C2 (en) |
| MY (1) | MY112113A (en) |
| TW (1) | TW280919B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3234857B2 (en) * | 1995-10-17 | 2001-12-04 | アルプス電気株式会社 | Switch device |
| JP3947307B2 (en) * | 1997-06-30 | 2007-07-18 | 株式会社鷺宮製作所 | Micro switch for high current |
| JP5270479B2 (en) * | 2009-07-10 | 2013-08-21 | 三菱電機株式会社 | Mounting device for electrical equipment and circuit breaker provided with the mounting device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2423075C2 (en) * | 1974-05-13 | 1983-10-20 | J.& J. Marquardt, 7201 Rietheim-Weilheim | Electric switch |
| JPH0455388Y2 (en) * | 1986-03-12 | 1992-12-25 |
-
1993
- 1993-11-08 JP JP5278386A patent/JP3008751B2/en not_active Expired - Lifetime
-
1994
- 1994-10-20 TW TW083109731A patent/TW280919B/zh active
- 1994-10-28 KR KR1019940027833A patent/KR0137410B1/en not_active IP Right Cessation
- 1994-11-07 MY MYPI94002948A patent/MY112113A/en unknown
- 1994-11-08 DE DE4439933A patent/DE4439933C2/en not_active Expired - Fee Related
- 1994-11-08 CN CN94117741A patent/CN1036363C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE4439933A1 (en) | 1995-05-11 |
| DE4439933C2 (en) | 1996-12-12 |
| KR950015440A (en) | 1995-06-16 |
| JP3008751B2 (en) | 2000-02-14 |
| JPH07134927A (en) | 1995-05-23 |
| TW280919B (en) | 1996-07-11 |
| KR0137410B1 (en) | 1998-07-01 |
| MY112113A (en) | 2001-04-30 |
| CN1036363C (en) | 1997-11-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 19971105 Termination date: 20131108 |