CN204740975U - Switch that can restrain electric arc - Google Patents
Switch that can restrain electric arc Download PDFInfo
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- CN204740975U CN204740975U CN201520403613.XU CN201520403613U CN204740975U CN 204740975 U CN204740975 U CN 204740975U CN 201520403613 U CN201520403613 U CN 201520403613U CN 204740975 U CN204740975 U CN 204740975U
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Abstract
The utility model provides a switch that can restrain electric arc, includes shift knob, wane subassembly, incoming wire terminal, driving piece portion dress, wane setting element, static contact. The wane subassembly includes the wane body, and the middle part of wane body is the U -shaped, and driving piece portion dress is including actuating lever, spring and transition piece, the upper end and the shift knob of transition piece link to each other, be equipped with the cavity that holds of a cylindricality on the transition piece, establish in holding the cavity upper end of actuating lever, the upper end top of spring is at the bottom of holding the chamber of cavity, the lower extreme top of spring is on the actuating lever, the bottom of the U -shaped of tip top in the middle part of the wane body of the lower extreme of actuating lever, at the switch or disconnection in -process, the lateral wall of that moving contact that driving piece portion dress can be touched with the static contact with keeping away from of U -shaped in the middle part of the wane body mutually is the company of touching mutually, thereby can avoid or greatly reduced wane body and incoming wire terminal's upper end between and move, the spring appears between the static contact, thereby can the greatly reduced switching arc, the service life of the switch is prolonged.
Description
Technical field
The utility model relates to a kind of electrical installation, especially relates to a kind of switch that can suppress electric arc.
Background technology
Switch is a kind of common electrical installation, for the electric current connected or in the one or more circuit of disjunction.A conventional switch, includes shift knob, seesaw assembly, input terminal, actuator portion dress, seesaw keeper, fixed contact.Wherein seesaw assembly comprises seesaw body, and the middle part of seesaw body takes the shape of the letter U, two sidewalls outer folding formation seesaw flanging respectively of the U-shaped in the middle part of seesaw body, and seesaw flanging is installed with moving contact; Lower surface in the middle part of seesaw body is supported on the upper end of input terminal, and the front and back end in the middle part of seesaw body is provided with positioning convex; Described positioning convex is stretched being located in the seesaw location notch on seesaw positioning seat.Actuator portion dress comprises drive rod, spring and transition piece.The upper end of transition piece is connected with shift knob, transition piece is provided with the accommodation cavity of a cylindricality, the upper end of drive rod is located at and holds in cavity, the upper end of spring withstands at the bottom of the chamber holding cavity, the lower end of spring withstands on drive rod, the end of the lower end of drive rod withstands on the bottom of the U-shaped in the middle part of seesaw body, and the upper end of drive rod is plugged in spring.When Push switch button, slide in the bottom of the U-shaped of end in the middle part of seesaw body of the lower end of drive rod, thus make seesaw body that corresponding swing occur, thus make moving contact contact with corresponding fixed contact or be separated, namely make switch connection or disjunction.
Switch is being connected or moment of disjunction, and can produce the very high electric arc of temperature between current-carrying part, it is that electric current flows through short space air gap between current-carrying part, makes the phenomenon that gas or liquid medium dissociate, discharge.Electric arc mainly produces at switch connection or disconnects between dynamic/static contact instantaneously, between seesaw body and support end.
Switching arc can produce serious harm, and wherein more commonly: the electric arc of high temperature is by the metal molten of dynamic and static contact surface or evaporate, and finally makes switch failure, serious also can cause accident.In order to reduce to occur electric arc between dynamic and static contact, the alloy silver layer generally using now anti-oxidant, anti-melting welding, anti-yaw damper ability strong is to do the silver contact of dynamic and static contact.
Before switch connection or disconnection, usually there will be bounce between seesaw body and support end, this produces small arc light reason between seesaw body and support end.These small arc lights can be oxidized seesaw body and support end contact surface between the two, form the firm not easy to wear and oxide layer [passivation layer] that resistance is higher between, and then make that switch resistance is excessive, temperature rise is too high and cause accident.The way of electric arc is produced between current solution seesaw body and support end, mainly apply grease on switch seesaw body and associated part, grease covers between seesaw body and support end by superficial attractive forces in switching manipulation process, to the degree of oxidation between seesaw body and support end can be reduced, make resistance in claimed range, temperature rise is in claimed range.Problems existing is: [1] grease has the negative effect of strengthening electric arc, if consumption precisely can not make the ablation degree of seesaw body increase, reduces switch life on the contrary accidents caused; [2] solid grease hardens under low-temperature condition, hinders switch seesaw assembly normal activity, makes switch cannot normal ON, also affects toggle feel simultaneously; [3] oiling can increase the production costs such as cost of labor, material cost, production equipment cost.
Summary of the invention
It is simple that main inventive object of the present utility model is to provide a kind of structure, and processing and manufacturing is easy, can effectively suppress switch being switched on or switched off in process the switch occurring electric arc.
The utility model technical scheme used is: a kind of switch that can suppress electric arc, comprises shift knob, seesaw assembly, input terminal, actuator portion dress, seesaw keeper, fixed contact;
Seesaw assembly comprises seesaw body, and the middle part of seesaw body takes the shape of the letter U, two sidewalls outer folding formation seesaw flanging respectively of the U-shaped in the middle part of seesaw body, and seesaw flanging is installed with moving contact; Lower surface in the middle part of seesaw body is supported on the upper end of input terminal, and the front and back end in the middle part of seesaw body is provided with positioning convex; Described positioning convex is stretched being located in the seesaw location notch on seesaw positioning seat;
Actuator portion dress comprises drive rod, spring and transition piece; The upper end of transition piece is connected with shift knob, transition piece is provided with the accommodation cavity of a cylindricality, the upper end of drive rod is located at and holds in cavity, the upper end of spring withstands at the bottom of the chamber holding cavity, the lower end of spring withstands on drive rod, the end of the lower end of drive rod withstands on the bottom of the U-shaped in the middle part of seesaw body, and the upper end of drive rod is plugged in spring;
At switch connection or before disconnecting, actuator portion dress and the U-shaped in the middle part of seesaw body touch company away from by the sidewall of that moving contact touched mutually with fixed contact.Namely, at switch connection or before disconnecting, be originally in the company's of touching dynamic and static contact of state and be separated, another moving contact is then to another fixed contact is close and last and another fixed contact touches even; Pretend the company of touching in the sidewall near the dynamic/static contact side be separated from each other of the U-shaped in the middle part of period seesaw body and described actuator portion, the bottom of the U-shaped of lower end in the middle part of seesaw body of drive rod is towards near another moving contact one Slideslip.
In the moment of switch connection, another moving contact of seesaw body and another fixed contact touch and connect, the kinetic energy that seesaw body fixes one end of this moving contact almost can moment vanishing, just be easy to drive seesaw body to depart from the upper end of input terminal if one end be separated with fixed contact of seesaw body does not have object to stop, cause between seesaw body and the upper end of input terminal and occur bouncing, electric arc will be produced between such seesaw body and the upper end of input terminal, formed and be oxidized, and then switch temperature rise will be caused too high.And this beat can drive between the dynamic and static contact of the mutually company of touching produce small beating, the electric arc between dynamic and static contact will be strengthened so further.The utility model, not be used in apply grease on switch seesaw body and associated part, in switch connection process, actuator portion dress can and the U-shaped in the middle part of seesaw body touch company away from by the sidewall of that moving contact touched mutually with fixed contact, certain component namely in actuator portion dress can in good time and the U-shaped in the middle part of seesaw body touch company away from by the sidewall of that moving contact touched mutually with fixed contact, thus can avoid or greatly reduce between seesaw body and the upper end of input terminal and occur bouncing, thus avoid or greatly reduce the electric arc between seesaw body and the upper end of input terminal, spring between the dynamic and static contact simultaneously can avoided further or greatly reduce touching mutually, thus reduce or eliminate touching mutually dynamic and static contact between produce harmful electric arc.And before the dynamic and static contact touching of touching mutually, moving contact and the corresponding fixed contact of the seesaw body other end are separated, the electric arc between these two the dynamic and static contacts mutually departed from also is not more than prior art.Therefore the utility model not be used in apply grease on switch seesaw body and associated part, but can effectively suppress switch being switched on or switched off the electric arc occurred in process, significantly improves resistive life-span and the fluoroscopic load life-span of switch.
As preferably, the lower end of chamber wall holding cavity be provided with left and right trend positioning runner, the top of the lower end of drive rod is provided with the spacing preiection be slidably matched with positioning runner, and the outer end of spacing preiection is being touched even in the respective side walls of switch connection or the U-shaped before disconnecting and in the middle part of seesaw body.This preferred version, drive rod be actuator portion dress and the U-shaped in the middle part of seesaw body away from the component sidewall of that moving contact touched mutually with fixed contact being touched company, when dynamic/static contact close to each other is touched together, due to the existence of spring, the U-shaped in the middle part of seesaw body can touch with the end of corresponding spacing preiection near this touching sidewall together and connect and can not affect together with dynamic/static contact stably touches.This preferred version, has that structure is simple, processing and manufacturing is easy to advantage.
As preferably, between the bottom of the lower end of spacing preiection and drive rod, be provided with transition projection.This preferred version, reliability is high.
As preferably, the end winding support of spacing preiection has elastic component, and the sidewall of the U-shaped in the middle part of the end face of flexible member and seesaw body touches and connects together.This preferred version, the coefficient of elasticity of described flexible member is less than the coefficient of elasticity of spring, and the coefficient of elasticity of flexible member is preferably less than 1/5th of the coefficient of elasticity of spring.This preferred version, is conducive to the effect and the stability that improve suppression electric arc.
As preferably, at switch connection or before disconnecting, connecting away from the sidewall of that moving contact touched mutually with fixed contact is touched of transition piece and the U-shaped in the middle part of seesaw body.Further, at switch connection or before disconnecting, be originally in the company's of touching dynamic and static contact of state and be separated, another moving contact is then to another fixed contact is close and last and another fixed contact touches even; The sidewall near the dynamic/static contact side be separated from each other of the U-shaped in the middle part of period seesaw body and transition piece touch and connect, the bottom of the U-shaped of lower end in the middle part of seesaw body of drive rod is towards another moving contact one Slideslip close, and when another moving contact contacts with another fixed contact, sidewall near another moving contact and the transition piece of the U-shaped in the middle part of seesaw body are separated, and the spacing between the sidewall near another moving contact of the U-shaped in the middle part of seesaw body and transition piece is 0.2 to 0.6 millimeter.This preferred version, is realized by the angle of inclination of the sidewall changing the U-shaped in the middle part of seesaw body, and structure is simple, and processing and manufacturing is easy.
As preferably, the lateral surface of the lower end of transition piece is fixed with flexible member, transition piece is touched by the sidewall of the U-shaped in the middle part of flexible member and seesaw body and connects.This preferred version, the coefficient of elasticity of flexible member is less than the coefficient of elasticity of spring, and the coefficient of elasticity of flexible member is preferably less than 1/5th of the coefficient of elasticity of spring.This preferred version, structure is simple, reliable operation, suppression electric arc are effective.Preferred further, described flexible member is an elastic ring, and the lateral surface of the lower end of transition piece is provided with a holddown groove, and flexible member is fixed on flexible member holddown groove.This preferred version, structure is simple, and processing and manufacturing is easy.
As preferably, the spherical radius of moving contact is more than or equal to 2 millimeters and is less than or equal to 5 millimeters.This preferred version, is applicable to the switch of 10A and following electric current.The spherical radius of moving contact is less than the minimum value of national standard suggestion radius.Recommend according to " GB5587-2003 Ag-based electrical contact basic configuration symbol for dimensioning and mark ", the spherical radius of the silver point of 10A and following electric current is 8 to 12 millimeters, and can avoid due to the utility model or greatly reduce beating and moving between seesaw body bottom portion and input terminal upper end, beating between fixed contact, thus avoid or greatly reduce between seesaw body bottom portion and input terminal upper end and move, electric arc is there is between fixed contact, greatly improve dynamic, fixed contact touches the reliability and stability connected, therefore for the switch of 10A and following electric current, the spherical radius of the utility model moving contact is more than or equal to 2 millimeters and is less than or equal to 5 millimeters, such one side can ensure to move, the Mechanical Contact point of the silver contact between fixed contact is in the thickest region of silver layer, particularly move, when the basal plane of fixed contact is not parallel, also can ensure that the silver layer of contact is utilized most effectively, under the prerequisite that contact silver layer consumption is identical, this design can significantly improve the dynamic/static contact life-span, on the other hand due to the reduction of moving contact spherical radius, also greatly reduce the kinetic energy of seesaw assembly, be conducive to the high effect suppressing electric arc.This preferred version, is conducive to reducing processing and fabricating cost, improves the life-span of dynamic and static contact, is namely conducive to the useful life of improving switch.
As preferably, the silver point diameter of moving contact is less than or equal to 2.5 millimeters.This preferred version, is applicable to the switch of 10A and following electric current, and the silver point diameter of moving contact is less than the diameter of national standard suggestion.According to " GB5587-2003 Ag-based electrical contact basic configuration symbol for dimensioning and mark ", suggestion 10A and following current switch select the silver point of diameter 3 millimeters to do moving contact, utilize the utility model then can by silver point reduced to 2.5 millimeter, the quality of such silver contact can reduce 40%, thus significantly can reduce the closed front kinetic energy instantaneously of seesaw assembly, and then the spring that can reduce well between dynamic and static contact, reduce electric arc and the ablation of dynamic/static contact.This preferred version, is conducive to the consumption reducing ag material, thus reduces the processing and manufacturing cost of switch.
In sum, the beneficial effect that the utility model brings is: the utility model, not be used in apply grease on switch seesaw body and associated part, but effectively can avoid or greatly reduce between seesaw body and the upper end of input terminal and occur bounce between dynamic and static contact, thus can effectively avoid or suppress occurring electric arc between seesaw body and the upper end of input terminal and between dynamic and static contact, thus the useful life can effectively improved switch and reliability.The utility model, the spherical radius of moving contact can be less than the minimum value of national standard suggestion radius, and the silver point diameter of moving contact is less than the diameter of national standard suggestion, has structure simple, the advantage that processing and manufacturing cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment one;
Fig. 2 is the structural representation of embodiment two;
Fig. 3 is the structural representation of embodiment three;
Fig. 4 be embodiment three seesaw body with improve before seesaw body compare schematic diagram;
Fig. 5 is the structural representation of embodiment four.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment one: the present embodiment is the switch of 10A switch and following electric current,
As shown in Figure 1, the utility model comprises shift knob 1, seesaw assembly 2, input terminal 3, actuator portion fill 4, seesaw keeper 5, fixed contact 6;
Seesaw assembly 2 comprises seesaw body 2.1, and the middle part of seesaw body takes the shape of the letter U, two sidewalls outer folding formation seesaw flanging 2.2 respectively of the U-shaped in the middle part of seesaw body, and seesaw flanging is installed with moving contact 2.3; Lower surface in the middle part of seesaw body is supported on the upper end of input terminal 3, and the front and back end in the middle part of seesaw body 2.1 is provided with positioning convex 2.4; Described positioning convex 2.4 is stretched being located in the seesaw location notch 5.1 on seesaw positioning seat 5;
Actuator portion fills 4 and comprises drive rod 4.1, spring 4.2 and transition piece 4.3; The upper end of transition piece 4.3 is connected with shift knob 1, transition piece 4.3 is provided with a columniform accommodation cavity 4.31, the upper end 4.11 of drive rod is located at and holds in cavity 4.31, the upper end of spring 4.2 withstands at the bottom of the chamber holding cavity 4.31, the lower end of spring 4.2 withstands on drive rod 4.1, the end of the lower end 4.12 of drive rod withstands on the bottom of the U-shaped in the middle part of seesaw body, and the upper end 4.11 of drive rod is plugged in spring 4.2;
At switch connection or before disconnecting, actuator portion fill 4 with the U-shaped in the middle part of seesaw body touch company away from by the sidewall of that moving contact 2.3 touch mutually with fixed contact 6.Namely, at switch connection or before disconnecting, be originally in the company's of touching dynamic and static contact of state and be separated, another moving contact is then to another fixed contact is close and last and another fixed contact touches even; Pretend the company of touching in the sidewall near the dynamic/static contact side be separated from each other of the U-shaped in the middle part of period seesaw body and described actuator portion, the bottom of the U-shaped of lower end in the middle part of seesaw body of drive rod is towards near another moving contact one Slideslip.
As preferably, the lower end of chamber wall that the present embodiment holds cavity 4.31 be provided with left and right trend positioning runner 4.32, the top of the lower end 4.12 of drive rod is provided with the spacing preiection 4.13 be slidably matched with positioning runner 4.32, and the outer end of spacing preiection 4.13 is being touched even in the respective side walls of switch connection or the U-shaped before disconnecting and in the middle part of seesaw body.Wherein, the groove width of positioning runner 4.32 be more than or equal to the diameter holding cavity 4.31 2/5ths, be less than or equal to 3/5ths of the diameter holding cavity 4.31, be provided with transition projection 4.14 between the bottom of the lower end 4.12 of spacing preiection 4.13 and drive rod in addition.
As preferably, in the present embodiment, the spherical radius of moving contact 5 is more than or equal to 2 millimeters and is less than or equal to 5 millimeters, and the silver point diameter of moving contact (5) is less than or equal to 2.5 millimeters." GB5587-2003 Ag-based electrical contact basic configuration symbol for dimensioning and mark " advises that 10A and following current switch select the silver point of diameter 3 millimeters to do moving contact, and the spherical radius of moving contact silver point is then 8 to 12 millimeters.And when utilizing the utility model, silver point reduced can be then 2.5 millimeters by 10A and following current switch, and the spherical radius of moving contact is more than or equal to 2 millimeters and be less than or equal to 5 millimeters, such one side can reduce the consumption of ag material greatly, significantly can also reduce the closed front kinetic energy instantaneously of seesaw assembly simultaneously, and then the spring that can reduce well between dynamic and static contact, reduce electric arc and the ablation of dynamic/static contact.
Embodiment two:
As shown in Figure 2, embodiment two is with the difference of embodiment one, in embodiment two, the end winding support of spacing preiection 4.13 has elastic component 4.15, the coefficient of elasticity of described flexible member 4.15 is less than 1/5th of the coefficient of elasticity of spring 4.2, the present embodiment, the coefficient of elasticity of described flexible member 4.15 equals 1/6th of the coefficient of elasticity of spring 4.2, and the sidewall of the U-shaped in the middle part of the end face of flexible member 4.15 and seesaw body touches all the time and connects together.
Embodiment three:
As shown in Figure 3, the difference of the present embodiment and embodiment one is, at switch connection or before disconnecting, be lateral surface and the U-shaped in the middle part of seesaw body of the lower end of transition piece 4.3 touch company away from by the sidewall of that moving contact 2.3 touch mutually with fixed contact 6; Namely at switch connection or before disconnecting, be originally in the company's of touching dynamic and static contact of state and be separated, another moving contact is then to another fixed contact is close and last and another fixed contact touches even; The sidewall near the dynamic/static contact side be separated from each other of the U-shaped in the middle part of period seesaw body and transition piece 4.3 company of touching, the bottom of the U-shaped of lower end in the middle part of seesaw body of drive rod 4.1 is towards another moving contact one Slideslip close, and when another moving contact contacts with another fixed contact, sidewall near another moving contact and the transition piece 4.3 of the U-shaped in the middle part of seesaw body are separated, and the spacing between the sidewall near another moving contact of the U-shaped in the middle part of seesaw body and transition piece 4.3 is 0.2 to 0.6 millimeter.The present embodiment is that the angle of inclination of sidewall by changing the U-shaped in the middle part of seesaw body realizes.As shown in Figure 4, dotted portion represents the structural representation of the seesaw body before improvement, two sidewalls of the U-shaped in the middle part of seesaw body and the angle of horizontal plane are 63 °, bold portion is the structural representation of the seesaw body after improving, two sidewalls of the U-shaped in the middle part of seesaw body and the angle of horizontal plane become 72 °, the dehiscing to be significantly less than of U-shaped after improving in the middle part of seesaw body improve before the dehiscing of U-shaped in the middle part of seesaw body, make to be switched on or switched off in process at switch, the side of transition piece lower end can with seesaw body in the middle part of two sidewalls of U-shaped touch and connect, can to avoid whereby or the appearance reduced in the middle part of seesaw body and between the upper end of input terminal and between dynamic/static contact is beated greatly.
Embodiment four: as shown in Figure 5, embodiment four is with the difference of embodiment three, in embodiment four, the lateral surface of the lower end of transition piece 4.3 is fixed with flexible member 4.3.1, the coefficient of elasticity of flexible member 4.3.1 is less than 1/5th of the coefficient of elasticity of spring 4.2, the present embodiment, the coefficient of elasticity of transition piece 4.3 flexible member 4.3.1 is less than 1/6th of the coefficient of elasticity of spring 4.2, flexible member 4.3.1 all the time with seesaw body in the middle part of the sidewall of U-shaped touch and connect.Point flexible member that described flexible member 4.3.1 can be separately fixed on the left and right side of transition piece 4.3 lower end by two sections is formed, the present embodiment, described flexible member 4.3.1 is an elastic ring, the lateral surface of the lower end of transition piece 4.3 is provided with a flexible member holddown groove, and flexible member 4.3.1 is fixed on flexible member holddown groove.Embodiment four, when another moving contact contacts with another fixed contact, the sidewall near another moving contact and the flexible member 4.3.1 of the U-shaped in the middle part of seesaw body can keep in touch state, are conducive to reducing processing and manufacturing cost.
Utilize the utility model, resistive life test is carried out to switch, following comparison is had: when on switch seesaw body and associated part during non-apply grease with the resistive life test result of switch before improving, temperature rise can more than 88K afterwards in the resistive life test of GB [40,000 tests] for switch before improvement, far above the temperature rise value of national Specification, it is defective switch product.And the utility model, the temperature rise the highest after the resistive life test of GB [40,000 times test] of switch at about 26K, far below the regulation of national standard.After carrying out 80,000 resistive life tests, maximum temperaturerise of the present utility model also lower than the 45K of national regulations, is still qualified products.Therefore, the resistive life-span of the present utility model will far above the resistive life-span of existing switch.The utility model is utilized to carry out fluoroscopic load life test to switch, following relation is had: when on switch seesaw body and associated part during non-apply grease with the fluoroscopic load life test result of switch before improving, switch before improvement maximum temperaturerise after fluoroscopic load one times of GB longevity examination number of times can, more than 100K, be substandard product.And the utility model after fluoroscopic load one times of GB longevity examination number of times maximum temperaturerise lower than 20K, after fluoroscopic load five times of GB longevity examination number of times, maximum temperaturerise is all lower than 40k, wherein the scheme of embodiment 3 maximum temperaturerise after fluoroscopic load 11 times of GB longevity examination number of times, all lower than 35K, is qualified products.Therefore, utilize the utility model, both greatly can reduce the processing and manufacturing cost of switch, significantly can also improve the useful life of switch.
Claims (10)
1. a switch for electric arc be can suppress, shift knob (1), seesaw assembly (2), input terminal (3), actuator portion dress (4), seesaw keeper (5), fixed contact (6) comprised;
Seesaw assembly (2) comprises seesaw body (2.1), and the middle part of seesaw body takes the shape of the letter U, two sidewalls outer folding formation seesaw flanging (2.2) respectively of the U-shaped in the middle part of seesaw body, and seesaw flanging is installed with moving contact (2.3); Lower surface in the middle part of seesaw body is supported on the upper end of input terminal (3);
Actuator portion dress (4) comprises drive rod (4.1), spring (4.2) and transition piece (4.3); Transition piece (4.3) is provided with the accommodation cavity (4.31) of a cylindricality,
It is characterized in that: at switch connection or before disconnecting, actuator portion dress (4) and the U-shaped in the middle part of seesaw body touch company away from by the sidewall of that moving contact (2.3) touched mutually with fixed contact (6).
2. the switch that can suppress electric arc according to claim 1, it is characterized in that: the lower end of chamber wall holding cavity (4.31) be provided with left and right trend positioning runner (4.32), the top of the lower end (4.12) of drive rod is provided with the spacing preiection (4.13) be slidably matched with positioning runner (4.32), and the outer end of spacing preiection (4.13) is being touched even in the respective side walls of switch connection or the U-shaped before disconnecting and in the middle part of seesaw body.
3. the switch that can suppress electric arc according to claim 2, is characterized in that: be provided with transition projection (4.14) between the bottom of the lower end (4.12) of spacing preiection (4.13) and drive rod.
4. the switch that can suppress electric arc according to Claims 2 or 3, is characterized in that: the end winding support of spacing preiection (4.13) has elastic component (4.15), and the sidewall of the U-shaped in the middle part of the end face of flexible member (4.15) and seesaw body touches and connects together.
5. the switch that can suppress electric arc according to claim 1, is characterized in that: at switch connection or before disconnecting, transition piece (4.3) and the U-shaped in the middle part of seesaw body touch company away from by the sidewall of that moving contact (2.3) touched mutually with fixed contact (6).
6. the switch that can suppress electric arc according to claim 5, it is characterized in that: at switch connection or before disconnecting, originally be in the company's of touching dynamic and static contact of state to be separated, another moving contact is then to another fixed contact is close and last and another fixed contact touches company; The sidewall near the dynamic/static contact side be separated from each other of the U-shaped in the middle part of period seesaw body and transition piece (4.3) company of touching, the bottom of the U-shaped of lower end in the middle part of seesaw body of drive rod (4.1) is towards another moving contact one Slideslip close, and when another moving contact contacts with another fixed contact, the sidewall near another moving contact and the transition piece (4.3) of the U-shaped in the middle part of seesaw body are separated.
7. the switch that can suppress electric arc according to claim 6, it is characterized in that: when another moving contact contacts with another fixed contact, the spacing between the sidewall near another moving contact of the U-shaped in the middle part of seesaw body and transition piece (4.3) is 0.2 to 0.6 millimeter.
8. the switch that can suppress electric arc according to claim 5, is characterized in that: the lower end of transition piece (4.3) is fixed with flexible member (4.3.1), and transition piece (4.3) is touched by the sidewall of the U-shaped in the middle part of flexible member (4.3.1) and seesaw body and connects.
9. the switch that can suppress electric arc according to claim 1 or 2 or 3 or 5 or 6 or 7 or 8, is characterized in that: the spherical radius of moving contact (5) is more than or equal to 2 millimeters and is less than or equal to 5 millimeters.
10. the switch that can suppress electric arc according to claim 1 or 2 or 3 or 5 or 6 or 7 or 8, is characterized in that: the silver point diameter of moving contact (5) is less than or equal to 2.5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520403613.XU CN204740975U (en) | 2015-06-11 | 2015-06-11 | Switch that can restrain electric arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520403613.XU CN204740975U (en) | 2015-06-11 | 2015-06-11 | Switch that can restrain electric arc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204740975U true CN204740975U (en) | 2015-11-04 |
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ID=54422698
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520403613.XU Expired - Fee Related CN204740975U (en) | 2015-06-11 | 2015-06-11 | Switch that can restrain electric arc |
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| Country | Link |
|---|---|
| CN (1) | CN204740975U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105097347A (en) * | 2015-06-11 | 2015-11-25 | 宁波公牛电器有限公司 | Switch capable of arc suppression |
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2015
- 2015-06-11 CN CN201520403613.XU patent/CN204740975U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105097347A (en) * | 2015-06-11 | 2015-11-25 | 宁波公牛电器有限公司 | Switch capable of arc suppression |
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Granted publication date: 20151104 Termination date: 20210611 |