CN103441016B - A kind of power type microswitch - Google Patents
A kind of power type microswitch Download PDFInfo
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- CN103441016B CN103441016B CN201310386666.0A CN201310386666A CN103441016B CN 103441016 B CN103441016 B CN 103441016B CN 201310386666 A CN201310386666 A CN 201310386666A CN 103441016 B CN103441016 B CN 103441016B
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Abstract
The invention discloses a kind of power type microswitch, it includes the contact spring assembly be arranged on pedestal and presses assembly with the rolling be arranged on shell, and is arranged on button actuation assembly between the two; Described contact spring assembly comprises upper reed plate, the lower reed of the lower fixed contact of band, the movable contact spring of band moving contact and a spring positioning support blade of bringing fixed contact; Described rolling presses the flanging that assembly comprises band circular arc adjustment tank and presses plate, rocking bar, roller, torsion spring and positive stop lug boss; Described button actuation assembly comprises button, push rod, pressure touching button, cone spring and sheath.Sensitive switch of the present invention has degree of protection high (dust-proof, waterproof), environment resistant good, the feature such as action gap is little and operating current is large; The peculiar structure of button actuation assembly, makes sensitive switch be energized simply when charged conversion, reduces and even avoids the phenomenon such as contact adhesion and arcing, improve useful life and the functional reliability of sensitive switch.
Description
Technical field
The present invention relates to sensitive switch, specifically a kind of power type microswitch.
Background technology
Sensitive switch has small contact separation and snap-action mechanism, and be provided with a kind of switch of drive rod in its outside, is sensitive switch again.Sensitive switch belongs to the more accurate device of structure, therefore breaks down than being easier to.One of principal element of power type microswitch fault is caused to be the generation of electric arc at present.Electric arc is when disjunction or turn-on voltage are more than circuit more than 100MA of 10V, electric current, can produce the extremely strong and gas that can conduct electricity of an extreme temperatures, brightness in contact gap (or claiming arc gap).The high temperature meeting scaling loss contact that electric arc produces, can cause phase fault, electrical equipment to explode, lead to fire, jeopardize the safety of personnel and equipment when serious.
The generation of electric arc relates to many factors, and one of its factor is the structure problem of the actuating assembly of switch.The structural design of the actuating assembly of existing sensitive switch is unreasonable, thus causes switch when charged conversion, and energising is not clear-cut, thus occurs the phenomenon such as adhesion, arcing, have impact on useful life and the functional reliability of sensitive switch.
Summary of the invention
Object of the present invention is just to provide a kind of power type microswitch, to solve or to reduce the problem that existing sensitive switch in use easily produces arcing, and strengthens the arc resistant scaling loss ability of sensitive switch.
The present invention is achieved in that a kind of power type microswitch, shell is outside equipped with at pedestal, the contact spring assembly that described pedestal is provided with, the rolling being provided with control switch action on the housing presses assembly, presses between assembly be provided with button actuation assembly at described contact spring assembly and described rolling;
Described contact spring assembly comprises upper reed plate, the lower reed of the lower fixed contact of band, the movable contact spring of band moving contact and a spring positioning support blade of bringing fixed contact; Described upper reed plate and described lower reed are separately fixed on described pedestal, and described upper fixed contact is relative up and down with described lower fixed contact and keep spacing; Described movable contact spring is connected to described rising in spring positioning support blade, and is fixed on described pedestal together with described spring positioning support blade, makes the moving contact of described movable contact spring end extend between described upper fixed contact and described lower fixed contact; Described play the screens effect of spring positioning support blade under, described moving contact keeps stable under normal conditions and contacts with upper fixed contact;
Described rolling presses the flanging that assembly comprises band circular arc adjustment tank and presses plate, rocking bar, roller, torsion spring and positive stop lug boss; Described roller is arranged on one end of described rocking bar, and the other end of described rocking bar presses plate by bearing pin with described flanging and connects, and described rocking bar and described flanging are pressed plate through the described flanging circular arc adjustment tank pressed on plate and be fixed together by screw; Described bearing pin support and connection are on the bearing being arranged at described outer casing top surface; Described torsion spring set is connected on described bearing pin, and one end hook is connected in described flanging and presses on the flanging of plate, and its other end is connected on described positive stop lug boss or described bearing; Described positive stop lug boss is fixed on the end face of described shell;
Described button actuation assembly comprises button, push rod, pressure touching button, cone spring and sheath; The bottom of described button is the cannula-like of under shed, in cross-under button spliced eye on the housing; The top of described push rod is the cannula-like of upper shed, and the top of described push rod is plugged in the lower parts casing pipe of described button, and described cone spring support is in the lower parts casing pipe of described button and the upper sleeve of described push rod; Described pressure touching button is arranged on the lower end of described push rod, and passes through the contention effect of described cone spring and described push rod, by being pressed on described movable contact spring; Described sheath is socketed on described button and described button spliced eye.
The epimere of described cone spring is the helical structure of isometrical equal pitch, and the hypomere of described cone spring is the taper equal pitch helical structure that diameter progressively reduces, and the epimere pitch of described cone spring is less than hypomere pitch.
By arranging reducing displacement abnormity spring between the button and push rod of button actuation assembly, the pressing force that assembly applies can be pressed rolling and evenly and stably pass to contact spring assembly, relaxing the generation even eliminating movable contact spring covibration thus; Offer on the master arm of movable contact spring simultaneously and let out power hole, so just can under not changing and executing stressed situation, strengthen movable contact spring to the support force pressing assembly that rolls, make the contact between moving contact and upper and lower fixed contact large and stablize, reducing the electric arc probability of happening of power type microswitch.
Epimere and the hypomere pitch ratio of described cone spring are 6 ~ 7 ﹕ 12, and the epimere of described cone spring is 3 ﹕ 5 with effective number of effective coils ratio of hypomere.
Described movable contact spring is with making containing magnesium beryllium-bronze QBe2, and it is " mountain " the font reed connected to form by two side support arms on centre master arm and both sides; Described master arm has and lets out power hole, two described side support arms are connected to and describedly rise in spring positioning support blade, form by difference in size be bent upwards arc; Described moving contact is the spherical surface body made with silver cadmium oxide material, and it is arranged on the front end of described master arm as public contact point, and make dynamic and static contact reliable contacts, contact resistance is little and stable, reduce further the harm of electric arc to sensitive switch.
Described pressure touching button makes with phenolic glass fiber plastic or polyphenylene sulfide, and its mechanical strength is high, and electrical property is excellent, fire-retardant, high-low temperature resistant, anti-vibration and excellent in cushion effect, can ensure properties of product requirement.
Sensitive switch of the present invention has degree of protection high (dust-proof, waterproof), environment resistant good, the feature such as action gap is little and operating current is large; The peculiar structure of button actuation assembly, makes sensitive switch be energized simply when charged conversion, reduces and even avoids the phenomenon such as contact adhesion and arcing, improve useful life and the functional reliability of sensitive switch.
Sensitive switch of the present invention has metal shell to protect, anti-vibration and shock resistance good; Drive form is rocker-arm, single-pole double-throw type structure, is small―gap suture precision switch; Be mainly used in AC and DC circuit and require that action is slight and control accurate occasion, particularly as the power-type switch of high voltage, big current, be with a wide range of applications at numerous areas such as aviation, electronics, weapons, boats and ships.
Sensitive switch of the present invention can meet action force≤10N, actuating length≤10 °, differential movement≤1.5 °, mechanical endurance 50,000 times, electric life 20,000 times.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the vertical view of power type microswitch shown in Fig. 1.
Fig. 3 is the structural representation of button actuation assembly.
Fig. 4 is the structural representation of cone spring.
Fig. 5 is the structural representation of movable contact spring.
In figure: 1, flanging presses plate, 2, rocking bar, 3, screw, 4, roller, 5, sheath, 6, button, 7, push rod, 8, pressure touching button, 9, movable contact spring, 10, moving contact, 11, spring positioning support blade is played, 12, shell, 13, torsion spring, 14, bearing pin, 15, pedestal, 16, cone spring, 17, sealing shroud, 18, riveting contacts hole, 19, master arm, 20, side support arm, 21, let out power hole, 22, installing hole, 23, inner casing, 24, grab, 25, positive stop lug boss, 26, button spliced eye.
Embodiment
Below by embodiment, the present invention will be further described.
As shown in Figure 1, the present invention is provided with the Double-protection housing (shell 12 and inner casing 23) that metal material is made, and be provided with pedestal 15 in protective casing inside, pedestal 15 adopts phenolic plastics to make.Pedestal 15 is provided with contact spring assembly, shell 12 is provided with the rolling of control switch action presses assembly, press at contact spring assembly and rolling and be provided with button actuation assembly between assembly.
Contact spring assembly (as shown in Figure 1), it comprises upper reed plate, the lower reed of the lower fixed contact of band, the movable contact spring 9 of band moving contact 10 and a spring positioning support blade 11 of bringing fixed contact.Upper reed plate and lower reed are separately fixed on pedestal 15, make fixed contact relative with lower fixed contact and keep spacing; Movable contact spring 9 adopts to be made containing magnesium beryllium-bronze QBe2, in " mountain " font structure, as shown in Figure 5, its master arm 19 is fixed on pedestal 15 by the installing hole 22 on top together with a spring positioning support blade 11, two side support arm 20 has withstood in draw-in groove set by spring positioning support blade 11 one end, because difference in size is formed arc; Have moving contact 10 at movable contact spring 9 other end by riveting contacts hole 18 riveted joint, moving contact 10 adopts silver cadmium oxide material to make and has spherical surface, between upper fixed contact and lower fixed contact; In addition, on main supporting walls 19, the below of installing hole 22 offers and lets out power hole 21.
As shown in Figure 1 and Figure 2, roll and press the flanging that assembly comprises band circular arc adjustment tank and press plate 1, rocking bar 2, roller 4, torsion spring 13 and positive stop lug boss 25: roller 4 is arranged on one end of rocking bar 2, press plate 1 at the other end of rocking bar 2 by bearing pin 14 and flanging to connect, rocking bar 2 and flanging are pressed plate 1 through the circular arc adjustment tank that flanging presses on plate 1 and are fixed together by screw 3; Bearing pin 14 support and connection are on the bearing being arranged at shell 12 end face; Torsion spring 13 is socketed on bearing pin 14, and one end hook is hung on flanging and presses on the flanging of plate 1, and the other end is fixed on positive stop lug boss 25 or bearing; Positive stop lug boss 25 is arranged on the end face of shell 12; Being located at flanging, to press the grab 24 of plate 1 other end relative with positive stop lug boss 25, and conduplication side presses plate 1 and plays position-limiting action.
Button actuation assembly is arranged on the below that flanging presses plate 1, and as shown in Figure 1, Figure 3, it is arranged on shell 12, is provided with metal o-ring 17 between button actuation assembly and shell 12.Button actuation assembly comprises with button 6, bores spring 16, push rod 7, presses touching button 8 and sheath 5, the bottom of button 6 is the cannula-like of under shed, in the button spliced eye 26 of cross-under on shell 12, the top of push rod 7 is the cannula-like of upper shed, is plugged in the lower parts casing pipe of button 6; Cone spring 16 support is in the lower parts casing pipe of button 6 and the upper sleeve of push rod 7; Pressure touching button 8 adopts phenolic glass fiber plastic to make, and have spherical surface, it is arranged on the lower end of push rod 7, and by boring the contention effect of spring 16 and push rod 7, by being pressed in (contact point of pressure touching button 8 and movable contact spring 9 is positioned at and lets out below power hole 21) on movable contact spring 9; Sheath 5 is socketed on button 6 and button spliced eye 26.
In the present embodiment, as shown in Figure 4, effective number of effective coils of cone spring 16 is 8 circles, is divided into epimere (3 circles, external diameter 6.2mm, pitch H
1=1.4mm) and hypomere (5 circles, external diameter 6.2mm ~ 4mm, pitch H
2=2.4mm), the spring filament diameter of simultaneously boring spring 16 is 0.7mm.
In its natural state, flanging presses plate 1 under the double reaction plus of torsion spring 13 and positive stop lug boss 25, and be in poised state, movable contact spring 9 is in stablizes with upper fixed contact the state contacted in the present invention.The present invention in use, pair roller 4 exerts a force, rocking bar 2 is made to drive flanging to press plate 1 one rotation, make torsion spring 13 produce deformation, flanging presses plate 1 and promotes button 6 and move downward, and the cone spring 16 in button 6 is compressed simultaneously, promote push rod 7 to move downward simultaneously, pressure touching button 8 pairs of movable contact springs 9 are exerted a force, and movable contact spring 9 produces deformation makes moving contact 10 be switched to from the state connected with upper fixed contact the state connected with lower fixed contact, and switch completes a state-transition.After pair roller 4 applied force is eliminated, torsion spring 13 returns to nature, flanging presses plate 1 and is lifted, bore spring 16 simultaneously and also return to nature, button 6 is lifted, and the thrust of push rod 7 pairs of movable contact springs 9 disappears, and movable contact spring 9 returns to from allowing state, moving contact 10 on movable contact spring 9 is switched to rapidly from the state connected with lower fixed contact the state connected with upper fixed contact, and sensitive switch completes the transformation of a next state again.
Claims (4)
1. a power type microswitch, shell is outside equipped with at pedestal, described pedestal is provided with contact spring assembly, and the rolling being provided with control switch action on the housing presses assembly, presses between assembly be provided with button actuation assembly at described contact spring assembly and described rolling; It is characterized in that,
Described contact spring assembly comprises upper reed plate, the lower reed of the lower fixed contact of band, the movable contact spring of band moving contact and a spring positioning support blade of bringing fixed contact; Described upper reed plate and described lower reed are separately fixed on described pedestal, and described upper fixed contact is relative up and down with described lower fixed contact and keep spacing; Described movable contact spring is connected to described rising in spring positioning support blade, and is fixed on described pedestal together with described spring positioning support blade, makes the moving contact of described movable contact spring end extend between described upper fixed contact and described lower fixed contact; Described play the screens effect of spring positioning support blade under, described moving contact keeps stable under normal conditions and contacts with upper fixed contact;
Described rolling presses the flanging that assembly comprises band circular arc adjustment tank and presses plate, rocking bar, roller, torsion spring and positive stop lug boss; Described roller is arranged on one end of described rocking bar, and the other end of described rocking bar presses plate by bearing pin with described flanging and connects, and described rocking bar and described flanging are pressed plate through the described flanging circular arc adjustment tank pressed on plate and be fixed together by screw; Described bearing pin support and connection are on the bearing being arranged at described outer casing top surface; Described torsion spring set is connected on described bearing pin, and one end hook is connected in described flanging and presses on the flanging of plate, and its other end is connected on described positive stop lug boss or described bearing; Described positive stop lug boss is fixed on the end face of described shell;
Described button actuation assembly comprises button, push rod, pressure touching button, cone spring and sheath; The bottom of described button is the cannula-like of under shed, in cross-under button spliced eye on the housing; The top of described push rod is the cannula-like of upper shed, and the top of described push rod is plugged in the lower parts casing pipe of described button, and described cone spring support is in the lower parts casing pipe of described button and the upper sleeve of described push rod; Described pressure touching button is arranged on the lower end of described push rod, and passes through the contention effect of described cone spring and described push rod, by being pressed on described movable contact spring; Described sheath is socketed on described button and described button spliced eye;
The epimere of described cone spring is the helical structure of isometrical equal pitch, and the hypomere of described cone spring is the taper equal pitch helical structure that diameter progressively reduces, and the epimere pitch of described cone spring is less than hypomere pitch.
2. according to the power type microswitch described in claim 1, it is characterized in that, epimere and the hypomere pitch ratio of described cone spring are 6 ~ 7 ﹕ 12, and the epimere of described cone spring is 3 ﹕ 5 with effective number of effective coils ratio of hypomere.
3. according to the power type microswitch described in claim 1, it is characterized in that, described movable contact spring is with making containing magnesium beryllium-bronze QBe2, and it is " mountain " the font reed connected to form by two side support arms on centre master arm and both sides; Described master arm has and lets out power hole, two described side support arms are connected to and describedly rise in spring positioning support blade, form by difference in size be bent upwards arc; Described moving contact is the spherical surface body made with silver cadmium oxide material, and it is arranged on the front end of described master arm as public contact point.
4. according to the power type microswitch described in claim 1, it is characterized in that, described pressure touching button makes with phenolic glass fiber plastic or polyphenylene sulfide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310386666.0A CN103441016B (en) | 2013-08-30 | 2013-08-30 | A kind of power type microswitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310386666.0A CN103441016B (en) | 2013-08-30 | 2013-08-30 | A kind of power type microswitch |
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| Publication Number | Publication Date |
|---|---|
| CN103441016A CN103441016A (en) | 2013-12-11 |
| CN103441016B true CN103441016B (en) | 2015-09-09 |
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ID=49694704
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310386666.0A Active CN103441016B (en) | 2013-08-30 | 2013-08-30 | A kind of power type microswitch |
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| CN (1) | CN103441016B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373801B (en) * | 2015-06-28 | 2018-05-01 | 朱正直 | Fine motion inductive switch |
| CN109585192B (en) * | 2018-12-04 | 2024-01-02 | 四川凌峰航空液压机械有限公司 | Speed reducer for reducing impact energy of micro switch |
| CN109755061A (en) * | 2019-03-11 | 2019-05-14 | 中壹发展八五零电子有限公司 | A kind of trigger type microswitch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1056104A1 (en) * | 1999-05-28 | 2000-11-29 | Alstom | High-speed control device for a high voltage connection apparatus, in particular a grounding disconnector |
| CN1393895A (en) * | 2001-06-29 | 2003-01-29 | 游聪谋 | Improved conducting sheet of switch |
| CN2749041Y (en) * | 2004-11-09 | 2005-12-28 | 天津市第六电器开关厂 | Non auto-reset limit switch with lock bar |
| CN1725397A (en) * | 2004-07-21 | 2006-01-25 | 沙尔特宝有限公司 | Microswitch |
| CN201895692U (en) * | 2010-11-24 | 2011-07-13 | 郑州日产汽车有限公司 | Automobile steering pressure switch |
-
2013
- 2013-08-30 CN CN201310386666.0A patent/CN103441016B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1056104A1 (en) * | 1999-05-28 | 2000-11-29 | Alstom | High-speed control device for a high voltage connection apparatus, in particular a grounding disconnector |
| CN1393895A (en) * | 2001-06-29 | 2003-01-29 | 游聪谋 | Improved conducting sheet of switch |
| CN1725397A (en) * | 2004-07-21 | 2006-01-25 | 沙尔特宝有限公司 | Microswitch |
| CN2749041Y (en) * | 2004-11-09 | 2005-12-28 | 天津市第六电器开关厂 | Non auto-reset limit switch with lock bar |
| CN201895692U (en) * | 2010-11-24 | 2011-07-13 | 郑州日产汽车有限公司 | Automobile steering pressure switch |
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| Publication number | Publication date |
|---|---|
| CN103441016A (en) | 2013-12-11 |
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Address after: 050021 No. 38 Donggang Road, Yuhua District, Shijiazhuang City, Hebei Province Patentee after: China one development 850 Electronics Co., Ltd. Address before: 050021 No. 44 Donggang Road, Yuhua District, Shijiazhuang City, Hebei Province Patentee before: Shijiazhuang No.850 Electronic Co., Ltd. |