WO2018130007A1

WO2018130007A1 - Electrical switch

Info

Publication number: WO2018130007A1
Application number: PCT/CN2017/112056
Authority: WO
Inventors: 王亮华
Original assignee: 乐清市也为电气有限公司
Priority date: 2017-01-13
Filing date: 2017-11-21
Publication date: 2018-07-19
Also published as: CN106783426A; CN106783426B

Abstract

Disclosed is an electrical switch, that is to say a circuit breaker, comprising a base seat (A), a central seat (B) and an upper cover (C), with a first placement chamber (D) being provided between the central seat (B) and the upper cover (C), and a second placement chamber (E) being provided between the central seat (B) and the base seat (A), characterised in that an N-pole contact operating apparatus (G) is provided inside the second placement chamber (E), the N-pole contact operating apparatus (G) comprises an N-pole movable contact (G1), a second tension spring (G2), a connecting shaft (G3) and an abutting pin (G4).Using the above-mentioned solution avoids the problems in the prior art, providing a novel electrical switch with a good arc-extinguishing effect and reliable safety.

Description

Electrical switch

Technical field

The invention relates to an electrical switch, ie a circuit breaker.

Background technique

The existing electrical switches have the following defects: 1. The N pole is not provided with an arc starting device. When the switch breaks the current, the arc cannot be driven to the other parts or the arc extinguishing chamber by the moving contact and the static contact. The switch static and dynamic contact is seriously burnt, or even if the arc-extinguishing device is provided, the arc-extinguishing chamber is not provided, causing the arc to stagnate for a long time in the arc-extinguishing device, causing the product to burn or burst, because the general line N Extremely unbreakable, but the above switch products, due to the serious burning of the static and dynamic contacts, cause short electrical life, causing line breakage and other hazards, and can not meet market requirements; Generally, a small arc extinguishing chamber is used, or an arc extinguishing chamber with an upper and lower asymmetry is adopted, and an arc cannot be introduced into the arc extinguishing chamber due to a small arc striking passage. The switch product has low breaking capacity or bursting phenomenon, and can not meet the requirements of higher and higher line breaking capacity; third, L pole, N pole moving contact are respectively fixed on the L pole and N pole moving contact bracket, then L pole, The N pole moving contact bracket is arranged on both sides of the lever, and the latch and the jump buckle are also arranged on the lever. At this time, the mechanism is large in volume, the mechanism movement is not flexible, the breaking speed is slow, and the L pole and the N pole moving contact are respectively located in the middle. The upper and lower sides of the seat are arranged on the two sides of the lever due to the L-pole and N-pole moving contact brackets. The L-pole and the N-pole of the mechanism part cannot be isolated. When the high current is interrupted, the arc and the conductive gas are easily short-circuited, causing the product to burst and break the product. failure. And there is a risk of breakdown voltage after breaking, which cannot meet the requirements of users.

technical problem

The invention overcomes the problems existing in the prior art and provides a novel electrical switch with good arc extinguishing effect, safety and reliability.

Technical solution

In order to achieve the above object, the present invention adopts the following technical solution: an electrical switch includes a base, a middle seat and an upper cover, and a first placement cavity is disposed between the middle seat and the upper cover, and between the middle seat and the base a second placement chamber is disposed, the first placement chamber is provided with an L-pole contact operating device, and the second placement chamber is provided with an N-pole contact operating device, and the middle seat is provided with a notch, the gap A trip device is disposed thereon, and an L pole arc extinguishing device is disposed under the trip device, and the L pole contact operating device includes an L pole moving contact, a jump button, an L pole moving contact bracket, and a latch a spring, a lock and a first tension spring, wherein the L pole moving contact is fixedly disposed on the movable contact bracket, the L pole moving contact bracket is provided with a long through hole, and the long through hole is provided with a pin shaft, the pin shaft The two ends of the first tension spring are connected to the L pole moving contact bracket, and the connection point with the L pole moving contact bracket is located above the long through hole. The other end of the first tension spring is fixedly connected to the middle seat or other components fixedly connected with the middle seat, The jumper hinge is disposed at an upper end of the L pole contact bracket, and the jumper is connected with the handle of the electric switch through a first connecting rod, and the middle portion of the buckle is sleeved on the pin shaft through the through hole provided, and the buckle is buckled The upper end is provided with an anti-contact pin that can cooperate with the jump buckle to limit the rotation of the jump buckle. The push buckle is provided with a pusher foot and a reset foot. The pusher foot is correspondingly disposed with the trip device push rod, and the top end of the reset foot is disposed. Provided with a spring seat, one end of the lock spring is in contact with the spring seat, wherein the second placement cavity is provided with an N-pole contact operating device, and the N-pole contact operating device comprises an N-pole contact a second tension spring, a connecting shaft and an abutting pin, wherein the connecting shaft is disposed in the long hole above the middle seat, and the connecting shaft is connected above the N pole moving contact and the L pole moving contact bracket, the N pole moving The middle of the contact is provided with an arc-shaped abutting surface, and the anti-contact pin is disposed between the middle seat and the base, and is disposed corresponding to the arc-shaped abutting surface, and the connecting hole or the connection is arranged above the arc-shaped abutting surface of the N-pole moving contact a boss, one end of the second tension spring is connected to the connecting hole or the connecting boss , And the other end connected to the base or the seat, the lower end of the N pole of the movable contact contacts.

Beneficial effect

By adopting the above scheme, the product can well disconnect the N pole when the L pole contact operating device has a problem, so as to meet the needs of special occasions, wherein the N pole contact operating device includes an N pole moving contact, The arrangement of the second tension spring, the connecting shaft and the contact pin, so that the overtravel function of the N pole moving contact can be realized by the second tension spring, so that the contact effect of the contact is better, and in the embodiment, the N pole contact operation The device is closed between the closing of the L-pole contact operating device and is broken after disconnection. These actions are also conventional in the art, which will not be described in detail herein.

According to a further aspect of the present invention, the L pole arc extinguishing device includes an L pole arc extinguishing chamber, an L pole upper arc striking plate, an L pole lower arc striking plate, an L pole left arc dividing plate, and an L pole right arc dividing plate. The arcing opening of the front end of the arc extinguishing plate of the L pole arc extinguishing chamber is disposed at the middle of the end face, and the front end of the arc extinguishing plate is symmetrically disposed at the sides of the arcing port, the L pole left arcing plate and the L pole right The partition plate is located at the left and right sides of the arc entrance, and the portion of the L pole left arc plate and the L pole right arc plate near the arc entrance is a left arc surface and a right arc surface, the left arc The face and right arc surfaces are arranged in parallel or parallel.

By adopting the above scheme, the arc-ignition and arc-extinguishing effect of the system can be better, as follows: the arc-in port of the front end of the arc-extinguishing plate of the L-pole arc chamber is disposed in the middle of the end face, and the front end of the arc-extinguishing plate is located in the arc. The parts on both sides of the mouth are symmetrically arranged, so that the gas and arc entering the L-pole arc-extinguishing chamber are evenly distributed in the space inside the L-pole arc-extinguishing chamber, so that the local air pressure in the arc-extinguishing chamber is not too high and bursts. Second, the L pole left arc surface and the L pole right arc surface are close to parallel or parallel, which is more conducive to introducing the arc into the L pole arc extinguishing chamber, and the pressure at the arc entrance is relatively stable, so that the arc is favorable for uniformity. They are respectively in the space of the L pole arc extinguishing chamber.

The invention is further provided that: the second placement cavity is further provided with an N-pole arc extinguishing device, and the N-pole arc extinguishing device comprises an N-pole upper arc-extinguishing plate, an N-pole lower arc-extinguiding plate and an N-pole arc extinguishing chamber, wherein The arcing plate on the N pole is integrally formed by the upper baffle portion, the upper arc guiding portion and the connecting portion, and the N-pole lower arc guiding plate is integrally formed by the contact portion, the lower arc guiding portion and the lower baffle portion, and the upper arc is formed. The arcing passage is formed between the portion and the lower arcing portion, and the N pole arc extinguishing chamber comprises an arc extinguishing partition plate and a supporting plate, wherein the supporting plate is fixedly disposed on both sides of the arc extinguishing partition plate, and the front end of the arc extinguishing partition plate The middle portion is provided with a V-shaped arcing opening, which is aligned with the arcing path.

By adopting the above scheme, we can further protect the electrical switch from being broken or exploded by the arc, mainly in the N-pole arc extinguishing device of the N-pole of the electric switch, so that once the N-pole is charged, an arc is generated, so that it can pass the N-pole. The arc extinguishing device performs arc extinguishing, and the electrical switch is well protected from bursting. In addition, the above-mentioned structure is adopted in the N-pole upper arc striking plate and the N-pole lower arc striking plate in the above structure, the arc striking effect is better, and the installation is convenient, and finally V The arcing opening is arranged in the middle of the front end of the arc extinguishing baffle, so that the pressure in the N pole arc extinguishing device is stable, and the problem that the local pressure is excessively large is not generated.

The invention is further provided that: the arc-shaped abutting surface in the middle of the N-pole moving contact is a circular arc-shaped abutting surface, and the abutting pin is provided with two, and the two anti-contact pins are spaced apart, and the N-pole moving contact rotates The circular arc-shaped abutting surface can be in abutment with the two anti-contact pins. The upper end of the L-pole movable contact bracket is provided with a stud, and the central position of the stud is provided with a mounting hole, and the stud is inserted in the middle In the long hole of the seat, the connecting shaft is inserted into the mounting hole, the upper end of the N-pole moving contact is provided with a connecting through hole, and the N-pole moving contact is sleeved on the connecting shaft through the connecting through hole, the N After the pole contact operating device is closed, the arc-shaped abutting surface is spaced apart from the abutting pin, and the length of the long hole above the seat of the electrical switch is less than or equal to the width above the L pole moving contact bracket, and the L pole contact is operated. When the device is closed, the long hole is completely blocked above the L pole contact bracket.

By adopting the above scheme, the N pole moving contact is not affected by other components when rotating, and the resisting pin also plays a supporting role, which is necessary for satisfying the overtravel action of the N pole moving contact, and the connecting shaft The installation is more stable, and the connecting shaft and the moving contact bracket not only have a large contact, but also ensure that the connecting shaft does not go out of power. After the N-pole contact operating device is closed, the arc-shaped abutting surface is separated from the resisting pin. The opening setting can prevent the heat from being transmitted to the resisting pin, so that the product is not easy to generate heat; the L-pole moving contact bracket is completely shielded from the long hole, so that the power is prevented from being well-operated, and the arc is also well prevented. To further ensure the safety of the product.

A further arrangement of the present invention is that the L pole left arc dividing plate is made of a gas generating material, and is disposed on the upper cover, the L pole right arc dividing plate is integrally provided with the middle seat, and the L pole is arranged on the arc The plate is integrally formed by the partition portion, the upper arcing portion and the contact portion, wherein the upper arcing region comprises a beveled edge and a vertical edge, wherein the partition portion and the contact portion are offset in the longitudinal direction of the upper arcing region The oblique side is twisted and disposed in a width direction, and the L-pole lower arcing plate includes a baffle portion, a lower arcing portion, and a connecting portion, wherein the baffle portion and the connecting portion are dislocated in a longitudinal direction, the lower portion The arcing zone is twisted in the width direction, and the left arcing surface and the right arcing surface of the L pole left arcing plate and the L pole right arcing plate are inclined faces.

By adopting the above scheme, the structure of the L pole left arc plate and the L pole right arc plate is simple, and the structure in the electric switch is relatively compact, so that the L pole upper arc plate and the L pole lower arc plate and the arc entrance are very Good correspondence, the arc-inducing effect is better, and the skewing of the oblique side and the lower arc-inducing area can be well matched with the L-pole arc-extinguishing chamber, and the left-side partition of the L-pole left arc-arc plate and the L-pole right arc-arc plate Both the curved surface and the right curved surface are inclined surfaces, which can be more favorable for the arc to enter the arc extinguishing chamber.

The final arrangement of the present invention: the rear end of the arc extinguishing partition of the N-pole arc extinguishing chamber is spaced apart from the convex portion of the middle seat and the base to form a passage, and the middle seat and the bottom of the base are provided with a through hole. The through hole and the passage pass through to form a first arc running passage, and a wiring port is disposed between the middle seat and the base and above the N pole arc extinguishing chamber, and the connecting portion of the N pole upper arc guiding plate is located in the wiring port, The channel and the wiring port are arranged to form a second running arc, and the opposite sides of the N-pole upper arcing plate and the N-pole lower arcing plate are provided with a magnet.

By adopting the above scheme, the high-pressure gas and the small arc generated in the arc extinguishing device can be well entered from the first arc-running passage to the outside, and the electrical switch is well protected, and the above-mentioned setting is convenient and reasonable, and the The arc extinguishing device has two upper and lower running arcs at the rear, so that the gas is more easily discharged, the arc temperature is reduced, and the arc is extinguished; the opposite sides of the upper arc striking plate and the lower arc striking plate are provided with magnetizing magnets, so that the extinction The arc device has a better arc extinguishing effect.

The invention will now be further described in conjunction with specific embodiments.

DRAWINGS

Figure 1 is an overall perspective view of an embodiment of the present invention;

2 is a schematic structural view showing a first placement cavity according to an embodiment of the present invention;

3 is a schematic structural view of an L-pole contact operating device according to an embodiment of the present invention;

4 is a schematic structural view of an N-pole contact operating device according to an embodiment of the present invention;

FIG. 5 is a structural diagram of an N-pole moving contact according to an embodiment of the present invention; FIG.

6 is a structural diagram of an N-pole moving contact when disconnected according to an embodiment of the present invention;

FIG. 7 is a structural diagram of an N-pole moving contact when starting a closing according to an embodiment of the present invention; FIG.

8 is a structural view of an N-pole moving contact when half of the closing of the embodiment of the present invention;

9 is a structural view of an N-pole moving contact after closing according to an embodiment of the present invention;

10 is a structural view showing a long hole covering the L pole moving contact bracket after the closing of the embodiment of the present invention;

Figure 11 is a structural view showing the installation of a connecting shaft according to an embodiment of the present invention;

12 is a perspective view of an L pole arc extinguishing device according to an embodiment of the present invention;

Figure 13 is a cross-sectional view showing an arc extinguishing plate according to an embodiment of the present invention;

Figure 14 is a cross-sectional view showing a center seat according to an embodiment of the present invention;

Figure 15 is a set of structural diagrams of an arc striking plate on an L pole according to an embodiment of the present invention;

Figure 16 is a structural diagram of a set of L-arc arc-extinguishing plates according to an embodiment of the present invention;

Figure 17 is a structural view of an arc extinguishing plate according to an embodiment of the present invention;

FIG. 18 is a perspective view showing the positional relationship between the upper and lower arcing plates of the L pole according to an embodiment of the present invention; FIG.

FIG. 19 is a schematic structural diagram of an N-pole arc extinguishing device according to an embodiment of the present invention; FIG.

20 is a structural diagram of an N-pole lower arc striking plate according to an embodiment of the present invention;

21 is a structural diagram of an arcing plate on an N pole according to an embodiment of the present invention;

Figure 22 is a structural view of an arc chute separator according to an embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

As shown in FIG. 1-22, an electrical switch includes a base A, a middle seat B, and an upper cover C. A first positioning cavity D is disposed between the middle seat B and the upper cover C, and the middle seat B and A second placement chamber E is disposed between the bases A. The first placement chamber D is provided with an L-pole contact operating device F, and the second placement chamber E is provided with an N-pole contact operating device G. The middle seat B is provided with a notch B1, the notch B1 is provided with a trip device H, and the L-pole arc extinguishing device K is disposed below the trip device H, and the L-pole contact operating device F includes an L-pole Moving contact F1, jumper F2, L pole contact holder F3, lock spring F4, lock F5 and first tension spring F6, wherein L pole contact F1 is fixedly arranged on movable contact bracket F3, L The pole contact holder F3 is provided with a long through hole, and the long through hole is provided with a pin shaft. Both ends of the pin shaft are disposed on the middle seat B and the upper cover C of the electric switch, and the first tension spring F6 end Connected to the L pole contact holder F3, and the connection point with the L pole contact holder F3 is located above the long through hole, and the other end of the first tension spring F6 is fixedly connected to the middle seat B of the electric switch or Middle seat B fixedly connected On the other part, the jumper F2 is hingedly disposed at the upper end of the L pole contact holder F3, and the jumper F2 is connected with the handle of the electric switch through the first link, and the middle of the buckle F5 passes through the through hole The movable sleeve is sleeved on the pin shaft, and an anti-contact pin F51 for restricting the rotation of the jumper F2 is disposed on the upper side of the buckle F5. The push pin F52 and the reset pin F53 are arranged under the lock F5, wherein the push pin F5 is provided with a push pin F52 and a reset pin F53. The foot F52 is disposed correspondingly to the tripod push rod of the electric switch, and the top end portion of the reset leg F53 is provided with a spring seat, and one end of the lock spring F4 is in contact with the other end of the spring seat and is in contact with the middle seat B or the outer casing C. The above-mentioned technical features have been filed by the applicant before, and all of them are not described in detail in this embodiment. In this embodiment, the central pole B of the electrical switch and the base A are also provided with an N pole. The contact operating device G, the N-pole contact operating device G includes an N-pole moving contact G1, a second tension spring G2, a connecting shaft G3 and an abutting pin G4, and the connecting shaft G3 is placed above the middle seat B. In the long hole B1, the connecting shaft G3 is connected to the N pole moving contact G1 and the L pole moving contact bracket F3. Therefore, the movement of the L-pole contact holder F3 can drive the movement of the N-pole contact G1, and the middle of the N-pole contact G1 is provided with an arc-shaped abutting surface G11, and the anti-contact pin G4 is disposed at the middle seat of the electric switch. Between the B and the base A, and corresponding to the curved abutting surface G11, the arc-shaped abutting surface G11 of the N-pole moving contact G1 is provided with a connecting hole G12 or a connecting boss, and the second tension spring G2 is connected at one end to the connecting hole. G12 or the connection boss, the other end is connected to the middle seat B or the base A of the electric switch, and the lower end of the N-pole moving contact G1 is the contact G13. By adopting the above scheme, the product can well disconnect the N pole when the L pole contact operating device F has a problem, so as to meet the needs of special occasions, wherein the N pole contact operating device G is in the second tension spring G2. The over-travel function of the N-pole moving contact G1 can be realized by the cooperation of the connecting shaft G3 and the resisting pin G4, so that the contact effect of the contact is better.

In the embodiment of the present invention, the arc-shaped abutting surface G11 in the middle of the N-pole moving contact G1 is a circular arc-shaped abutting surface G11, and the resisting pin G4 is provided with two, and the two resisting pins G4 are spaced apart, and actually The upper pole contact G11 can be in contact with the two resisting pins G4 when the N pole moving contact G1 rotates, so that the N pole moving contact G1 is not affected by other components when rotating. The impact, in addition to the resistance pin G4 also plays a supporting role, it is necessary to meet the N pole moving contact G1 overtravel action.

In the embodiment of the present invention, the upper end of the L-pole contact holder F3 is provided with a stud F31. The center of the shaft of the stud F31 is provided with a mounting hole, and the protrusion F31 is disposed at the length of the middle seat B. In the hole B1, the connecting shaft G3 is inserted into the mounting hole, the upper end of the N-pole moving contact G1 is provided with a connecting through hole G14, and the N-pole moving contact G1 is sleeved on the connecting shaft 23 through the connecting through-hole G14. Therefore, the connection of the connecting shaft G3 is more stable, and the connecting shaft 23 and the L pole moving contact bracket F3 not only have much contact, but also ensure that the connecting shaft G3 does not run away, providing safety. In this embodiment, after the N-pole contact operating device G is closed, the arc-shaped abutting surface G11 is spaced apart from the contact pin G4, so that heat can be prevented from being transmitted to the resisting pin G4, so that the product is not It is easy to heat up.

In the embodiment of the present invention, the length of the long hole B1 above the seat of the electric switch is less than or equal to the width above the L pole moving contact bracket F3, and the L pole contact operating device 1 is closed when the L pole moving contact bracket F3 is closed. The long hole B1 is completely shielded, which can prevent the power from being well, and also prevent the arc from being introduced, further ensuring the safety of the product.

In this embodiment, the L pole arc extinguishing device K includes an L pole arc extinguishing chamber K1, an L pole arc plate K2, an L pole arc striking plate K3, an L pole left arc plate K4, and an L pole right partition. In the present embodiment, the arcing port K111 at the front end of the arc extinguishing plate K11 of the L pole arc extinguishing chamber K1 is disposed in the middle of the end surface, and the front end of the arc extinguishing plate K11 is located on both sides of the arcing port K111. Symmetrical setting, so that the gas and arc entering the L-arc chamber K1 are evenly distributed in the space inside the L-pole arc-extinguishing chamber K1, so that the local air pressure in the L-pole arc-extinguishing chamber K1 is not too high and bursts. The problem, of course, the middle part is not the absolute middle, there may be some deviation; the L pole left arc plate K4 and the L pole right baffle K5 are located at the left and right sides of the arc entrance K111, the L pole left arc plate The portion of the K4 and L pole right arc dividing plate K5 near the arcing port K111 is an L pole left arcing surface K41 and an L pole right arcing surface K51, and the L pole left arcing surface K41 and the L pole right partition The arc surface K51 is arranged close to parallel or in parallel, which is more favorable for introducing the arc into the L pole arc extinguishing chamber K1, and the pressure at the arcing port K111 is relatively stable, so that the arc is favorable for uniformity in the L pole. Each arc chamber space K1 by using the above-described embodiment, and may cause the arc extinguishing system better.

In the embodiment of the present invention, the L pole left arc dividing plate K4 is made of a gas generating material, and is disposed on the upper cover C, and the L pole right arc dividing plate K5 is integrally provided with the middle seat B, so that L is The extreme left arc plate K4 and the L pole right arc plate K5 have a simple structure and a relatively compact structure in the electrical switch.

In the embodiment of the present invention, the L-pole upper arc striking plate K2 is integrally formed by the partition portion K21, the upper arcing portion K22 and the contact portion K23, wherein the upper arcing region K22 includes a beveled edge K221 and a vertical side K222, wherein the partition portion K21 and the contact portion K23 are dislocated in the longitudinal direction of the arc striking plate K2 on the L pole, the oblique side K221 is twisted and disposed in the width direction, and the L pole lower arc striking plate K3 includes a block The plate portion K31, the lower arcing portion K32, and the connecting portion K33, wherein the shutter portion K31 and the connecting portion K33 are displaced in the longitudinal direction, and the lower arcing portion K32 is twisted in the width direction. By adopting the above scheme, the arcing plate K2 of the L pole and the K3 of the lower pole of the L pole are well matched with the arcing port K111, and the arc striking effect is better, and the oblique side K221 and the lower arcing portion K32 are twisted. Very good corresponding to the arc extinguishing chamber K1. The left arcuate surface K41 and the right arcuate surface K51 of the L pole left arc plate K4 and the L pole right arc plate K5 are both inclined faces, which is more favorable for the arc to enter the arc extinguishing chamber K1.

In the embodiment of the present invention, the second placement chamber E is further provided with an N-pole arc extinguishing device L, and the N-pole arc extinguishing device L includes an N-pole upper arc-leading plate L1 and an N-pole lower arc-ignition plate L2 and N. The arc extinguishing chamber L3, wherein the arcing plate L1 on the N pole is integrally formed by the upper baffle portion L11, the upper arcing portion L12 and the connecting portion L13, and the N-pole lower arc striking plate L2 is composed of the contact portion L21 and the lower arc The portion L22 and the lower baffle portion L23 are integrally configured, and the arcing path is formed between the upper arcing portion L12 and the lower arcing portion L22, and the N pole arc extinguishing chamber L3 includes an arc extinguishing partition L31 and a supporting plate L32. The support plate L32 is fixedly disposed on two sides of the arc extinguishing partition L31, and the front end of the arc extinguishing partition L31 is provided with a V-shaped arcing port L311, and the arcing port L311 is disposed in alignment with the arcing path. By adopting the above scheme, we can further protect the electrical switch from being broken or exploded by the arc. Once the N pole is charged, an arc is generated, so that the arc extinguishing device L can perform arc extinguishing, and the electrical switch is well protected from being broken. In addition, in the above structure, the N-pole upper arc-ignition plate L1 and the N-pole lower arc-arcing plate L2 adopt the above structure, the arc-inducing effect is better, and the installation is convenient, and finally the V-shaped entrance arc port L311 is disposed at the front end of the arc-extinguishing partition L31. In the middle, the pressure in the arc extinguishing device L is stable, and there is no problem that the local pressure is too large to burst.

In the embodiment of the present invention, the rear end of the arc extinguishing partition L31 of the N-pole arc extinguishing chamber L3 is spaced apart from the convex edge of the middle frame B and the base A to form a channel L81, and the middle seat B and the base A a through hole L82 is disposed under the through hole L82, and the through hole L82 and the channel L81 are formed to form a first arc running channel; a wiring port L9 is disposed between the middle seat B and the base A and located above the N pole arc extinguishing chamber L3. The wiring portion L13 of the arcing plate L1 on the N pole is located in the wiring port L9, and the channel L81 and the wiring port L9 are arranged to form a second arcing path. By adopting the above scheme, the arc extinguishing device L can have two upper and lower running arcs behind, so that the gas is more easily discharged, the arc temperature is reduced, and the arc is extinguished. In the embodiment of the present invention, the opposite sides of the N-pole upper arcing plate L1 and the N-pole lower arcing plate L2 are provided with the magnetizers L01 and L02.

The above-mentioned embodiments are only used to explain the inventive concept of the present invention, and are not intended to limit the scope of the present invention. Any insubstantial modification of the present invention by this concept should fall within the scope of the present invention.

Embodiments of the invention

Industrial applicability

Sequence table free content

Claims

An electric switch includes a base, a middle seat and an upper cover, a first placement cavity is disposed between the middle seat and the upper cover, and a second placement cavity is disposed between the middle seat and the base, the first placement An L-pole contact operating device is disposed in the cavity, an N-pole contact operating device is disposed in the second positioning cavity, a gap is disposed on the middle seat, and a trip device is disposed on the notch, and the trip device is disposed Provided below is an L pole arc extinguishing device, the L pole contact operating device includes an L pole moving contact, a jumper, an L pole moving contact bracket, a lock spring, a lock buckle and a first tension spring, wherein L The pole moving contact is fixedly disposed on the movable contact bracket, the L pole moving contact bracket is provided with a long through hole, and the long through hole is provided with a pin shaft, and both ends of the pin shaft are disposed at the middle seat and the upper side of the electric switch Covered, one end of the first tension spring is connected to the L pole moving contact bracket, and the connection point with the L pole moving contact bracket is located above the long through hole, and the other end of the first tension spring is fixedly connected to the middle seat The jumper is hingedly disposed on the upper end of the L-pole movable contact bracket on the other component fixedly connected to the middle seat, and the jumper The handles of the electrical switch are connected by a first connecting rod, and the middle portion of the locking sleeve is sleeved on the pin shaft through the through hole provided, and the engaging pin is arranged to cooperate with the jump buckle to restrain the jumping pin from rotating. a pusher foot and a reset foot are disposed under the buckle, wherein the pusher foot is disposed corresponding to the trip device push rod, and the top end portion of the reset foot is provided with a spring seat, and the lock spring end is abutted against the spring seat. The utility model is characterized in that: an N-pole contact operating device is arranged in the second positioning cavity, the N-pole contact operating device comprises an N-pole moving contact, a second tension spring, a connecting shaft and an anti-contact pin, and the connecting shaft is arranged In the long hole above the middle seat, the connecting shaft is connected above the N pole moving contact and the L pole moving contact bracket, and the middle portion of the N pole moving contact is provided with an arc abutting surface, and the resisting pin is disposed in the middle Between the seat and the base, and corresponding to the arc-shaped abutting surface, the arc-shaped abutting surface of the N-pole moving contact is provided with a connecting hole or a connecting boss, and the second tension spring is connected at one end to the connecting hole or the connecting boss. The other end is connected to the middle seat or the base, and the N pole is touched The lower end of the head is a contact.
The electrical switch according to claim 1, wherein the L pole arc extinguishing device comprises an L pole arc extinguishing chamber, an L pole upper arc striking plate, an L pole lower arc striking plate, and an L pole left arc blocking plate. L pole right arc plate, the arc entrance of the front end of the arc extinguishing plate of the L pole arc extinguishing chamber is disposed at the middle of the end face, and the front end of the arc extinguishing plate is symmetrically disposed at a portion on both sides of the arcing port, the L pole left The arc plate and the L pole right baffle are located at the left and right sides of the arc entrance, and the portions of the L pole left arc plate and the L pole right arc plate near the arc entrance are the left arc surface and the right arc. The left arcing surface and the right arcing surface are arranged in parallel or parallel.
The electrical switch according to claim 1 or 2, wherein the second positioning chamber is further provided with an N-pole arc extinguishing device, and the N-pole arc extinguishing device comprises an N-pole arcing plate and an N-pole lowering guide. The arc plate and the N-pole arc extinguishing chamber, wherein the arc-extinguishing plate on the N-pole is integrally formed by the upper baffle portion, the upper arc-leading portion and the connecting portion, and the N-pole lower arc-leading plate is composed of a contact portion, a lower arcing portion and a lower portion The baffle portion is integrally formed, and the arcing path is formed between the upper arcing portion and the lower arcing portion, and the N pole arc extinguishing chamber comprises an arc extinguishing partition plate and a supporting plate, wherein the supporting plate is fixedly disposed on the arc extinguishing partition plate On both sides of the front end of the arc extinguishing partition, a V-shaped arcing opening is arranged, and the arcing opening is arranged in alignment with the arcing path.
The electrical switch according to claim 1 or 2, wherein the arc-shaped abutting surface in the middle of the N-pole moving contact is a circular arc-shaped abutting surface, and the resisting pin is provided with two, and the two resisting pins are separated. In the open setting, the arc-shaped abutting surface of the N-pole moving contact can be in interference with the two anti-contact pins, and the upper end of the L-pole movable contact bracket is provided with a stud, and the shaft center position of the stud is set to be installed. a hole, the protruding post is disposed in the long hole of the middle seat, the connecting shaft is inserted in the mounting hole, the upper end of the N-pole moving contact is provided with a connecting through hole, and the N-pole moving contact is connected through the through hole The sleeve is disposed on the connecting shaft, and the arc-shaped abutting surface is spaced apart from the contact pin after the N-pole contact operating device is closed. The length of the long hole above the seat of the electrical switch is less than or equal to the L pole moving contact. The width above the bracket, when the L-pole contact operating device is closed, the long-holes are completely blocked above the L-pole moving contact bracket.
The electrical switch according to claim 3, wherein the arc-shaped abutting surface of the middle portion of the N-pole moving contact is a circular arc-shaped abutting surface, and the resisting pin is provided with two, and the two resisting pins are spaced apart from each other. When the N pole moving contact rotates, the circular arc abutting surface thereof can cooperate with the two resisting pins, and the upper end of the L pole moving contact bracket is provided with a protruding column, and the shaft center position of the protruding column is provided with a mounting hole. The protruding post is disposed in the long hole of the middle seat, the connecting shaft is inserted in the mounting hole, the upper end of the N-pole moving contact is provided with a connecting through hole, and the N-pole moving contact is sleeved through the connecting through hole After the N-pole contact operating device is closed, the arc-shaped abutting surface is spaced apart from the contact pin, and the length of the long hole above the seat of the electrical switch is less than or equal to the L-pole moving contact bracket. The width of the L-pole contact operating device is closed when the L-pole moving contact bracket is completely shielded from the long hole.
The electrical switch according to claim 2, wherein the L pole left arc dividing plate is made of a gas generating material, and is disposed on the upper cover, and the L pole right arc dividing plate is integrally provided with the middle seat. The arcing plate on the L pole is integrally formed by the partition portion, the upper arcing region and the contact portion, wherein the upper arcing region comprises a beveled edge and a vertical edge, wherein the partition portion and the contact portion are in the upper arc The lengthwise direction of the zone is dislocated, the beveled edge is twisted and disposed in the width direction, and the L-pole lower arc striking plate includes a baffle portion, a lower arcing region and a connecting portion, wherein the baffle portion and the connecting portion are in the longitudinal direction The upper arcing zone is twisted and disposed in the width direction, and the left arcing surface and the right arcing surface of the L pole left arcing plate and the L pole right arcing plate are both inclined faces.
The electrical switch according to claim 2, wherein the second positioning chamber is further provided with an N-pole arc extinguishing device, and the N-pole arc extinguishing device comprises an N-pole upper arc-extinguishing plate and an N-pole lower arc striking plate. And an N-pole arc extinguishing chamber, wherein the arc-extinguishing plate on the N-pole is integrally formed by the upper baffle portion, the upper arc-leading portion and the connecting portion, and the N-pole lower arc-leading plate is composed of a contact portion, a lower arc-leading portion and a lower baffle The unit is integrally formed, and the arcing path is formed between the upper arcing portion and the lower arcing portion, and the N pole arc extinguishing chamber comprises an arc extinguishing partition plate and a supporting plate, wherein the supporting plate is fixedly disposed on the arc extinguishing partition plate a side, a middle portion of the front end of the arc extinguishing partition is provided with a V-shaped arcing opening, and the arcing opening is arranged with respect to the arcing guide; the L pole left arc dividing plate is made of a gas generating material, and is disposed on the upper cover. The L pole right arc dividing plate is integrally provided with the middle seat, and the L pole upper arc guiding plate is integrally formed by the partition portion, the upper arc guiding portion and the contact portion, wherein the upper arc guiding region comprises a beveled edge and a vertical a side, wherein the partition portion and the contact portion are offsetly disposed in a longitudinal direction of the upper arcing region, the oblique side is twisted and disposed in a width direction, and the L-pole lower arcing plate includes a plate portion, a lower arcing portion and a connecting portion, wherein the baffle portion and the connecting portion are dislocated in a longitudinal direction, the lower arc striking region is twisted in a width direction, the L pole left arc plate and the L pole right partition The left arc surface and the right arc surface of the arc plate are inclined surfaces.
The electrical switch according to claim 3, wherein a rear end of the arc extinguishing partition of the N-pole arc extinguishing chamber is spaced apart from a flange of the middle frame and the base to form a passage, the middle seat and the base a through hole is formed in the lower portion, the through hole and the passage pass through to form a first arc running passage, and a wiring port is disposed between the middle seat and the base and above the N pole arc extinguishing chamber, and the arcing plate of the N pole is arranged The wiring portion is located in the wiring port, and the channel and the wiring port are arranged to form a second running arc, and the opposite sides of the N-pole upper arcing plate and the N-pole lower arcing plate are provided with a magnet.
The electrical switch according to claim 5, wherein a rear end of the arc extinguishing partition of the N-pole arc extinguishing chamber is spaced apart from a flange of the middle frame and the base to form a passage, the middle seat and the base a through hole is formed in the lower portion, the through hole and the passage pass through to form a first arc running passage, and a wiring port is disposed between the middle seat and the base and above the N pole arc extinguishing chamber, and the arcing plate of the N pole is arranged The wiring portion is located in the wiring port, and the channel and the wiring port are arranged to form a second running arc, and the opposite sides of the N-pole upper arcing plate and the N-pole lower arcing plate are provided with a magnet.