Magnetic conductive device

Abstract

The magnetic conductive device comprises a magnetic conductive ring and two magnetic conductive pins, the magnetic conductive ring is arranged around the static contact, a notch is reserved in one side, facing the moving contact, of the magnetic conductive ring, the two magnetic conductive pins are arranged on the two sides of the notch in the magnetic conductive ring at intervals, and the magnetic conductive pins extend in the direction away from the magnetic conductive ring. According to the magnetic conductive device provided by the utility model, through the magnetic conductive ring arranged around the static contact and the magnetic conductive pin at the notch of the magnetic conductive ring, before an electric arc is generated, the magnetic conductive device has the maximum magnetic flux when a circuit current passes through the static contact, and the generated electric arc is transferred to the direction of the arc extinguish chamber under the action of the maximum magnetic blow-out force of the magnetic conductive device; and the arc is continuously transferred to the arc extinguish chamber in an accelerated manner under the action of magnetic blow-out force of the magnetic conductive pins, so that the speed of transferring the breaking arc to the arc extinguish chamber is increased, and the arc extinguishing device can be suitable for alternating-current arc extinguishing and direct-current arc extinguishing.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a magnetic conductive device. Background Art

[0002] The arc extinguishing device is an important component of switchgear such as circuit breakers. Its function is to extinguish the arc generated by the disconnection of the moving and static contacts. Commonly used solenoid (coil) circuit breakers have a current limiting function. Through mechanical impact, the moving and static contacts are separated as quickly as possible to generate an arc, and the current peak is limited to play a current limiting role. The arc is transferred to the arc extinguishing chamber for extinguishing. The screw-type mechanical impact has a current limiting effect, but the effect of transferring the arc from the moving and static contacts to the arc runner and arc extinguishing chamber is not obvious. For products with large breaking current, the arc runner is burned, causing the product to fail to break.

[0003] The existing circuit breaker magnetic conductive device generally places two identical or symmetrical magnetic conductive devices in the upper and lower arc isolation plates, and mainly generates a self-excitation magnetic field through the arc to transfer the arc to the arc extinguishing chamber through the magnetic blowing force. However, the magnetic blowing force generated by the existing magnetic conductive device structure is relatively small, and the effect of transferring the arc from the moving and static contacts to the arc runway and the arc extinguishing chamber is not obvious. Utility Model Content

[0004] The purpose of the utility model is to overcome at least one defect of the prior art and provide a magnetic conductive device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The magnetic conductive device comprises a magnetic conductive ring and two magnetic conductive feet. The magnetic conductive ring is arranged around the static contact and has a gap on the side facing the moving contact. The two magnetic conductive feet are arranged at intervals on both sides of the gap on the magnetic conductive ring, and the magnetic conductive feet extend in a direction away from the magnetic conductive ring.

[0007] Optionally, the end of the magnetic conductive foot is provided with a bending head which is bent in a direction away from the moving contact and close to the arc extinguishing chamber.

[0008] Optionally, the stationary contact includes a vertical section provided with a stationary contact point and an arc angle connected to the vertical section, and the magnetic conductor is arranged around the vertical section.

[0009] Optionally, some of the static contacts are located inside the magnetic conductive ring.

[0010] Optionally, a portion of the static contact away from the arc angle is inside the magnetic conductive ring, and another portion of the static contact close to the arc angle extends out of the magnetic conductive ring; the magnetic conductive ring is located on the side of the contact position between the static contact and the moving contact away from the arc angle.

[0011] Optionally, the static contact is completely located inside the magnetic conductive ring.

[0012] Optionally, the magnetic conductive ring is located on a side of the static contact close to the arc angle.

[0013] Optionally, the magnetic conductive ring is located on a side of the static contact away from the arc angle.

[0014] Optionally, the distance between the two magnetic conductive feet is d1, and the size of the electromagnetic channel formed by the magnetic conductive ring in the arrangement direction of the two magnetic conductive feet is d2, and d1<d2.

[0015] Optionally, the magnetic ring includes a first magnetic segment arranged opposite to the gap and two second magnetic segments arranged at both ends of the first magnetic segment at intervals along a third direction, the two second magnetic segments are bent in directions approaching each other to form two third magnetic segments, the gap is formed between the two third magnetic segments, and the two third magnetic segments are connected to the two magnetic feet correspondingly and arranged at equal intervals.

[0016] Optionally, the first magnetic conductive segment is a straight structure with the width direction along the first direction and the length direction along the third direction; the second magnetic conductive segment is vertically connected to the first magnetic conductive segment and is arranged along the width direction along the first direction and the length direction along the second direction; the third magnetic conductive segment is vertically connected to the magnetic conductive foot and is arranged along the width direction along the first direction and the length direction along the third direction; the magnetic conductive foot is a straight structure with the width direction along the third direction and the length direction along the first direction; the first direction, the second direction and the third direction are perpendicular to each other.

[0017] Optionally, the magnetic conductive device includes two symmetrical halves, the first magnetic conductive segment is divided into two halves, one half of the first magnetic conductive segment, a second magnetic conductive segment, a third magnetic conductive segment, and a magnetic conductive foot are sequentially connected as a whole to form one half of the magnetic conductive device, and the other half of the first magnetic conductive segment, another second magnetic conductive segment, another third magnetic conductive segment, and another magnetic conductive foot are sequentially connected as a whole to form the other half of the magnetic conductive device;

[0018] Alternatively, the magnetic conductive device comprises a first magnetic conductive segment and a first part and a second part symmetrically arranged at two ends of the first magnetic conductive segment, a magnetic conductive foot, a third magnetic conductive segment, and a second magnetic conductive segment are sequentially connected as a whole to form the first part, and another magnetic conductive foot, another third magnetic conductive segment, and another second magnetic conductive segment are sequentially connected as a whole to form the second part;

[0019] Alternatively, the magnetic conductive device comprises a U-shaped third part and a symmetrical first part and a second part assembled on the inner sides of two arms of the third part, a magnetic conductive foot and a third magnetic conductive segment are integrally connected to form the first part, another magnetic conductive foot and another third magnetic conductive segment are integrally connected to form the second part, and two second magnetic conductive segments are integrally connected to two ends of the first magnetic conductive segment to form the U-shaped third part;

[0020] Alternatively, the magnetic conductive device includes a first part and a second part, a magnetic conductive foot, a third magnetic conductive segment, and a second magnetic conductive segment are sequentially connected as a whole to form the first part, and another magnetic conductive foot, another third magnetic conductive segment, another second magnetic conductive segment, and the first magnetic conductive segment are sequentially connected as a whole to form the second part.

[0021] Optionally, the distance between the two magnetic conductive feet is d1, and the size of the electromagnetic channel formed by the magnetic conductive ring in the arrangement direction of the two magnetic conductive feet is d2, and d1=d2.

[0022] Optionally, the magnetic ring includes a first magnetic segment arranged opposite to the gap and two second magnetic segments arranged at both ends of the first magnetic segment at intervals along a third direction, the two second magnetic segments are correspondingly connected to the two magnetic feet and are arranged at equal intervals, and the gap is formed at the connection between the two second magnetic segments and the magnetic feet.

[0023] Optionally, the first magnetic conductive segment is a straight structure arranged along the first direction in the width direction and along the third direction in the length direction; the second magnetic conductive segment is a straight structure arranged along the first direction in the width direction and along the second direction in the length direction; the magnetic conductive foot is a straight structure arranged along the second direction in the width direction and along the first direction in the length direction; the first direction, the second direction and the third direction are perpendicular to each other.

[0024] Optionally, the connected second magnetic conductive segment and the magnetic conductive foot are in the same plane as the bent head at the end of the magnetic conductive foot.

[0025] Optionally, the magnetic conductive device includes two symmetrical halves, the first magnetic conductive segment is divided into two halves, one half of the first magnetic conductive segment, a second magnetic conductive segment, and a magnetic conductive foot are sequentially connected as a whole to form one half of the magnetic conductive device, and the other half of the first magnetic conductive segment, another second magnetic conductive segment, and another magnetic conductive foot are sequentially connected as a whole to form the other half of the magnetic conductive device;

[0026] Alternatively, the magnetic conductive device comprises a first magnetic conductive segment and a first part and a second part symmetrically arranged at two ends of the first magnetic conductive segment, a magnetic conductive foot and a second magnetic conductive segment are integrally connected to form the first part, and another magnetic conductive foot and another second magnetic conductive segment are integrally connected to form the second part;

[0027] Alternatively, the magnetic conductive device includes a first part and a second part, a magnetic conductive foot and a second magnetic conductive segment are integrally connected to form the first part, and another magnetic conductive foot, another second magnetic conductive segment, and the first magnetic conductive segment are sequentially integrally connected to form the second part.

[0028] The magnetic conductive device of the utility model has a magnetic conductive ring arranged around the static contact and a magnetic conductive foot at the notch of the magnetic conductive ring. Before the arc is generated, when the circuit current passes through the static contact, the magnetic conductive device has a maximum magnetic flux. When the arc is generated, it is transferred toward the arc extinguishing chamber under the action of the maximum magnetic blowing force of the magnetic conductive device, and is continuously accelerated to transfer the arc to the arc extinguishing chamber under the action of the magnetic blowing force of the magnetic conductive foot, thereby increasing the speed of transferring the breaking arc to the arc extinguishing chamber. The utility model is suitable for AC arc extinguishing and DC arc extinguishing.

[0029] In addition, a bending head with a bending design is provided at the end of the magnetic conductive foot, and the bending head is bent toward the arc extinguishing chamber to guide the arc to transfer toward the arc extinguishing chamber, thereby enhancing the magnetic blowing effect.

[0030] In addition, the magnetic ring is located on the side of the contact position between the static contact and the moving contact away from the arc angle, that is, the magnetic ring is set above the contact position between the static contact and the moving contact, and the magnetic blowing effect is best.

[0031] In addition, by adding a third magnetic conductive section inside the second magnetic conductive section, the distance between the two magnetic conductive feet is shortened, and the leakage magnetic flux is reduced to increase the magnetic flux between the two magnetic conductive feet. The arc is subjected to a greater magnetic blowing force, making it easier for the arc to transfer to the arc extinguishing chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the arc extinguishing structure of the switchgear of the utility model from the first perspective;

[0033] Figure 2 This is a schematic diagram of the arc extinguishing structure of the switchgear of the utility model from a second viewing angle;

[0034] Figure 3 It is a schematic diagram of the structure of a magnetic conductive device, an arc angle and a static contact point implemented in the utility model;

[0035] Figure 4 This is a structural schematic diagram of a first assembly method of a magnetic conductive device implemented in the utility model;

[0036] Figure 5 It is a structural schematic diagram of a second assembly method of a magnetic conductive device implemented in the utility model;

[0037] Figure 6 This is a structural schematic diagram of a third assembly method of a magnetic conductive device implemented in the utility model;

[0038] Figure 7 This is a structural schematic diagram of a fourth assembly method of a magnetic conductive device implemented in the utility model;

[0039] Figure 8 This is a structural schematic diagram of the first assembly method of the second magnetic conductive device implemented in the utility model;

[0040] Fig. 9This is a structural schematic diagram of the second assembly method of the two magnetic conductive devices implemented in the utility model;

[0041] Fig.10 It is a structural schematic diagram of the third assembly method of the two magnetic conductive devices implemented in the utility model;

[0042] Magnetic conductive device 1; magnetic conductive ring 11; first magnetic conductive section 111; second magnetic conductive section 112; second magnetic conductive section 113; magnetic conductive foot 12; bending head 13; electromagnetic channel 14; notch 15; arc angle 2; static contact 3; static contact point 31; vertical section 32; moving contact 4; moving contact 41; arc extinguishing chamber 5; arc extinguishing grid 51. DETAILED DESCRIPTION

[0043] The following is a further description of the specific implementation of the magnetic conductive device of the utility model in combination with the embodiments given in the accompanying drawings. The magnetic conductive device of the utility model is not limited to the description of the following embodiments.

[0044] like Figure 1-2 As shown, the magnetic conductive device 1 of this embodiment, as an important component of the arc extinguishing device in the switchgear, is used to generate a magnetic blowing force to blow the arc generated by the disconnection of the moving contact 41 of the moving contact 4 and the static contact 3 of the static contact 3 into the arc extinguishing chamber 5, so that the arc is extinguished by the arc extinguishing chamber 5. The magnetic conductive device 1 of this embodiment is suitable for switchgear such as circuit breakers and contactors, and is particularly suitable for solenoid (coil) circuit breakers.

[0045] like Figure 1-3 As shown, the static contact 3 includes a vertical section 32 arranged along a first direction and an arc angle 2 connected to the vertical section 32, the arc extinguishing chamber 5, the vertical section 32 and the moving contact 4 are arranged in sequence along the second direction, the static contact 31 is arranged on the side of the vertical section 32 which is away from the arc extinguishing chamber 5 and faces the moving contact 4, the opening and closing direction of the moving contact 41 and the static contact 31 is the second direction, and a plurality of arc extinguishing grids 51 are arranged in the arc extinguishing chamber 5 and are arranged in sequence and stacked at intervals along the first direction.

[0046] like Figure 1-2 As shown, the magnetic conductive device 1 of this embodiment includes a magnetic conductive ring 11 and two magnetic conductive feet 12. The magnetic conductive ring 11 is arranged around the static contact 3 and has a gap 15 on the side facing the moving contact 4. The two magnetic conductive feet 12 are arranged on both sides of the gap 15 on the magnetic conductive ring 11 at intervals along the third direction. The magnetic conductive feet 12 extend in a first direction away from the magnetic conductive ring 11, that is, Figure 2 The first direction is Figure 2 The middle up-down direction, the second direction is Figure 2 The left and right directions, the third direction is Figure 2In the front-to-back direction, the first direction, the second direction and the third direction are perpendicular to each other. The magnetic device of this embodiment, through the magnetic ring 11 arranged around the static contact 3 and the magnetic foot 12 at the notch 15 of the magnetic ring 11, before the arc is generated, when the circuit current passes through the static contact 3, the magnetic device 1 has the maximum magnetic flux, and when the arc is generated, it is transferred to the arc extinguishing chamber 5 under the action of the maximum magnetic blowing force of the magnetic device 1, and the arc is continuously accelerated to transfer to the arc extinguishing chamber 5 under the action of the magnetic blowing force of the magnetic foot 12, thereby increasing the speed of the breaking arc to transfer to the arc extinguishing chamber 5, and can be applied to AC arc extinguishing and DC arc extinguishing. The magnetic device 1 of the conventional structure and this embodiment is simulated and calculated. Under the breaking current of 1600A, the magnetic blowing force on the arc increases by 220-250% compared with the conventional structure; under the breaking current of 6000A, the magnetic blowing force on the arc increases by 140-150% compared with the conventional structure.

[0047] like Figure 1-3 As shown, the bending head 13 is bent in the direction away from the moving contact 4 and close to the arc extinguishing chamber 5. The end of the magnetic conductive foot 12 is provided with a bending head 13 with a bending design, and the bending head 13 is bent toward the arc extinguishing chamber 5 to guide the arc to transfer toward the arc extinguishing chamber 5 and enhance the magnetic blowing effect.

[0048] like Figure 1-3 As shown in FIG. 1 , as a preferred embodiment of the position setting of the magnetic conductive ring 11, the magnetic conductive ring 11 is arranged around the vertical section 32. In the first embodiment, part of the static contact 31 is located in the magnetic conductive ring 11. It can be that a part of the static contact 31 away from the arc angle 2 is in the magnetic conductive ring 11, and another part of the static contact 31 close to the arc angle 2 extends out of the magnetic conductive ring 11, that is, as shown in FIG. Figure 1As shown, in which, in the first direction of the magnetic ring 11, the contact position between the static contact 31 and the moving contact 41 is located on the side away from the arc angle 2, that is, the magnetic ring 11 is set at a position slightly above the contact position between the static contact 31 and the moving contact 41, the upper part of the static contact 31 is located in the magnetic ring 11, and the lower part of the static contact 31 extends out of the magnetic ring 11, and the magnetic blowing effect is best; it can also be that a part of the static contact 31 close to the arc angle 2 is in the magnetic ring 11, and the other part of the static contact 31 away from the arc angle 2 extends out of the magnetic ring 11, that is, the magnetic ring 11 is set at a position slightly below the contact position between the static contact 31 and the moving contact 41, the lower part of the static contact 31 is located in the magnetic ring 11, and the upper part of the static contact 31 extends out of the magnetic ring 11. In the second embodiment, the static contact 31 is completely located in the magnetic ring 11. In the third embodiment, the magnetic conductive ring 11 is located on the side of the static contact 31 close to the arc angle 2 in the first direction, that is, the static contact 31 is not inside the magnetic conductive ring 11, and the magnetic conductive ring 11 is below the static contact 31. In the fourth embodiment, the magnetic conductive ring 11 is located on the side of the static contact 31 away from the arc angle 2 in the first direction, that is, the static contact 31 is not inside the magnetic conductive ring 11, and the magnetic conductive ring 11 is above the static contact 31. The magnetic conductive ring 11 is C-shaped or U-shaped, and the notch 15 on the magnetic conductive ring 11 allows the magnetic flux on the magnetic conductive ring 11 to flow to the two magnetic conductive feet 12, wherein in the first and second embodiments, the notch 15 also serves to avoid the moving contact 4, and the moving contact 4 drives the moving contact 41 to pass through the notch 15 and close the contact with the static contact 31.

[0049] The magnetic conductive device 1 has two embodiments, such as Figure 4 and Figure 8 As shown in FIG. 1 , the main difference between the structures of the magnetic conductive device 1 in the two embodiments is that the distance d1 between the two magnetic conductive feet 12 is different. The distance between the two magnetic conductive feet 12 in the first embodiment is smaller than the distance between the two magnetic conductive feet 12 in the second embodiment. Specifically, the size of the electromagnetic channel 14 formed by the magnetic conductive ring 11 in the arrangement direction of the two magnetic conductive feet 12 (i.e., the third direction) is d2. Figure 4 In the embodiment 1 shown, d1<d2; Figure 8 In the second embodiment shown, d1=d2. Under the same conditions, the magnetic flux density near the magnetic feet 12 is large, the magnetic blowing force on the arc is large, and it is easier for the arc to transfer to the arc extinguishing chamber 5, so that the magnetic blowing effect of the magnetic device 1 of the first embodiment is better than that of the second embodiment. If the design space allows, the optimized design of the magnetic device 1 belongs to the protection scope of this application, such as reducing the distance between the two magnetic feet 12, reducing the leakage magnetic flux to increase the magnetic flux between the two magnetic feet 12, and increasing the magnetic blowing force of the magnetic device 1 on the arc; or increasing the length and / or width of the magnetic ring 11, reducing the magnetic resistance to increase the magnetic flux between the two magnetic feet 12, and increasing the magnetic blowing force of the magnetic device 1 on the arc.

[0050] like Figure 4-7As shown, the specific structure of the magnetic conductive device 1 in the first embodiment, the magnetic conductive ring 11 includes a first magnetic conductive segment 111 arranged opposite to the notch 15 and two second magnetic conductive segments 112 arranged at both ends of the first magnetic conductive segment 111 along the third direction, the two second magnetic conductive segments 112 are bent towards each other to form two third magnetic conductive segments 113, the notch 15 is formed between the two third magnetic conductive segments 113, and the two third magnetic conductive segments 113 are connected to the two magnetic conductive feet 12 and are arranged at equal intervals. In this embodiment, the size of the electromagnetic channel 14 surrounded by the magnetic conductive ring 11 in the third direction is d2, which is the distance between the two second magnetic conductive segments 112. Specifically, the first magnetic conductive section 111 is a straight structure arranged along the first direction in width and along the third direction in length; the second magnetic conductive section 112 is vertically connected to the first magnetic conductive section 111, and is arranged along the first direction in width and along the second direction in length; the third magnetic conductive section 113 is vertically connected to the magnetic conductive foot 12, and is arranged along the first direction in width and along the third direction in length; the magnetic conductive foot 12 is a straight structure arranged along the third direction in width and along the first direction in length. The magnetic conductive device 1 of this embodiment increases the magnetic flux between the two magnetic conductive feet 12 by adding the third magnetic conductive section 113 to the inner side of the second magnetic conductive section 112, reducing the distance between the two magnetic conductive feet 12, and reducing the leakage magnetic flux, so that the arc is subjected to a greater magnetic blowing force, and it is easier for the arc to be transferred to the arc extinguishing chamber 5. Of course, the first magnetic conductive section 111, the second magnetic conductive section 112, and the third magnetic conductive section 113 of this embodiment can also be structures of other shapes such as arcs.

[0051] In this embodiment, the first magnetic conductive section 111 and the second magnetic conductive section 112, the second magnetic conductive section 112 and the third magnetic conductive section 113, and the third magnetic conductive section 113 and the magnetic conductive foot 12 of the magnetic conductive device 1 can be connected in one piece or separately. In this embodiment, the magnetic conductive device 1 includes multiple assembly methods. The first assembly method, such as Figure 4 As shown, the magnetic conductive device 1 includes two symmetrical halves, the first magnetic conductive segment 111 is divided into two halves, one half of the first magnetic conductive segment 111, a second magnetic conductive segment 112, a third magnetic conductive segment 113, and a magnetic conductive foot 12 are sequentially connected as a whole to form one half of the magnetic conductive device 1, and the other half of the first magnetic conductive segment 111, another second magnetic conductive segment 112, another third magnetic conductive segment 113, and another magnetic conductive foot 12 are sequentially connected as a whole to form the other half of the magnetic conductive device 1. The second assembly method, such as Figure 5 As shown, the magnetic conductive device 1 includes a first magnetic conductive segment 111 and a first part and a second part symmetrically arranged at both ends of the first magnetic conductive segment 111, a magnetic conductive foot 12, a third magnetic conductive segment 113, and a second magnetic conductive segment 112 are sequentially connected as a whole to form the first part, and another magnetic conductive foot 12, another third magnetic conductive segment 113, and another second magnetic conductive segment 112 are sequentially connected as a whole to form the second part. The third assembly method, such as Figure 6 As shown, the magnetic conductive device 1 includes a U-shaped third part and a symmetrical first part and a second part assembled on the inner side of the two arms of the third part. A magnetic conductive foot 12 and a third magnetic conductive segment 113 are integrally connected to form the first part, another magnetic conductive foot 12 and another third magnetic conductive segment 113 are integrally connected to form the second part, and two second magnetic conductive segments 112 are integrally connected to the two ends of the first magnetic conductive segment 111 to form the U-shaped third part. The fourth assembly method, such as Figure 7 As shown, the magnetic conductive device 1 includes a first part and a second part, a magnetic conductive foot 12, a third magnetic conductive segment 113, and a second magnetic conductive segment 112 are sequentially connected as a whole to form the first part, and another magnetic conductive foot 12, another third magnetic conductive segment 113, another second magnetic conductive segment 112, and the first magnetic conductive segment 111 are sequentially connected as a whole to form the second part.

[0052] like Figure 8-10 As shown, the specific structure of the magnetic conductive device 1 of the second embodiment is different from that of the first embodiment in that the third magnetic conductive segment 113 is not provided. In this embodiment, the magnetic conductive ring 11 includes a first magnetic conductive segment 111 arranged opposite to the gap 15 and two second magnetic conductive segments 112 arranged at both ends of the first magnetic conductive segment 111 along the third direction. The two second magnetic conductive segments 112 are connected to the two magnetic conductive feet 12 and are arranged at equal intervals. The gap 15 is formed between the connection points of the two second magnetic conductive segments 112 with the magnetic conductive feet 12. The second magnetic conductive segment 112 is connected to the magnetic conductive feet 12 to form a plane perpendicular to the third direction, and the bending head 13 provided at the end of the magnetic conductive feet 12 is in the same plane as the magnetic conductive feet 12. The size of the electromagnetic channel 14 surrounded by the magnetic conductive ring 11 in this embodiment in the third direction is d2, which is the distance between the two second magnetic conductive segments 112. Specifically, the first magnetic conductive segment 111 is a straight structure arranged along the first direction in width and along the third direction in length; the second magnetic conductive segment 112 is a straight structure arranged along the first direction in width and along the second direction in length; the magnetic conductive foot 12 is a straight structure arranged along the second direction in width and along the first direction in length. The magnetic conductive device 1 of this embodiment has a simpler structure and is easy to manufacture.

[0053] In this embodiment, the first magnetic conductive section 111 and the second magnetic conductive section 112 of the magnetic conductive device 1 and the second magnetic conductive section 112 and the magnetic conductive foot 12 can be integrally connected or separately arranged. In this embodiment, the magnetic conductive device 1 includes multiple assembly methods. The first assembly method is as follows: Figure 8As shown, the magnetic conductive device 1 includes two symmetrical halves, the first magnetic conductive segment 111 is divided into two halves, one half of the first magnetic conductive segment 111, a second magnetic conductive segment 112, and a magnetic conductive foot 12 are sequentially connected as a whole to form one half of the magnetic conductive device 1, and the other half of the first magnetic conductive segment 111, another second magnetic conductive segment 112, and another magnetic conductive foot 12 are sequentially connected as a whole to form the other half of the magnetic conductive device 1. The second assembly method, such as Fig. 9 As shown, the magnetic conductive device 1 includes a first magnetic conductive segment 111 and a first part and a second part symmetrically arranged at both ends of the first magnetic conductive segment 111, a magnetic conductive foot 12 and a second magnetic conductive segment 112 are integrally connected to form the first part, and another magnetic conductive foot 12 and another second magnetic conductive segment 112 are integrally connected to form the second part. The third assembly method, such as Fig.10 As shown, the magnetic conductive device 1 includes a first part and a second part. A magnetic conductive foot 12 and a second magnetic conductive segment 112 are integrally connected to form the first part, and another magnetic conductive foot 12, another second magnetic conductive segment 112, and the first magnetic conductive segment 111 are integrally connected in sequence to form the second part.

[0054] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on directions or positional relationships shown in the drawings, or directions or positional relationships that are usually placed when in use, and are only for the convenience of description, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating relative importance.

[0055] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A magnetic conductive device, characterized in that: The invention comprises a magnetic conductive ring (11) and two magnetic conductive feet (12); the magnetic conductive ring (11) is arranged around a stationary contact (3) and has a notch (15) on the side facing a moving contact (4); the two magnetic conductive feet (12) are arranged at intervals on both sides of the notch (15) on the magnetic conductive ring (11); and the magnetic conductive feet (12) extend in a direction away from the magnetic conductive ring (11).

2. The magnetic conductive device according to claim 1, characterized in that: The end of the magnetic conductive foot (12) is provided with a bent head (13) bent in a direction away from the moving contact (4) and close to the arc extinguishing chamber (5).

3. The magnetic conductive device according to claim 1, characterized in that: The stationary contact (3) comprises a vertical section (32) provided with a stationary contact point (31) and an arc angle (2) connected to the vertical section (32), and the magnetic conductive ring (11) is arranged around the vertical section (32).

4. The magnetic conductive device according to claim 3, characterized in that: Part of the static contacts (31) is located inside the magnetic conductive ring (11).

5. The magnetic conductive device according to claim 4, characterized in that: A portion of the static contact (31) away from the arc angle (2) is inside the magnetic conductive ring (11), and another portion of the static contact (31) close to the arc angle (2) extends out of the magnetic conductive ring (11). The magnetic conductive ring (11) is located on a side of the contact position between the static contact (31) and the movable contact (41) away from the arc angle (2).

6. The magnetic conductive device according to claim 3, characterized in that: The static contact (31) is completely located inside the magnetic conductive ring (11).

7. The magnetic conductive device according to claim 3, characterized in that: The magnetic conductive ring (11) is located on a side of the static contact (31) close to the arc angle (2).

8. The magnetic conductive device according to claim 3, characterized in that: The magnetic conductive ring (11) is located on a side of the static contact (31) away from the arc angle (2).

9. The magnetic conductive device according to claim 1, characterized in that: The distance between the two magnetic conductive feet (12) is d1, and the size of the electromagnetic channel (14) formed by the magnetic conductive ring (11) in the arrangement direction of the two magnetic conductive feet (12) is d2, d1<d2.

10. The magnetic conductive device according to claim 1 or 9, characterized in that: The magnetic conductive ring (11) comprises a first magnetic conductive segment (111) arranged opposite to the notch (15) and two second magnetic conductive segments (112) arranged at intervals at both ends of the first magnetic conductive segment (111) along a third direction; the two second magnetic conductive segments (112) are respectively bent in a direction approaching each other to form two third magnetic conductive segments (113); the notch (15) is formed between the two third magnetic conductive segments (113); the two third magnetic conductive segments (113) are correspondingly connected to the two magnetic conductive feet (12) and are arranged at equal intervals.

11. The magnetic conductive device according to claim 10, characterized in that: The first magnetic conductive segment (111) is a straight structure arranged along a first direction in width and along a third direction in length; the second magnetic conductive segment (112) is vertically connected to the first magnetic conductive segment (111), and is arranged along the first direction in width and along the second direction in length; the third magnetic conductive segment (113) is vertically connected to the magnetic conductive foot (12), and is arranged along the first direction in width and along the third direction in length; the magnetic conductive foot (12) is a straight structure arranged along the third direction in width and along the first direction in length; the first direction, the second direction and the third direction are perpendicular to each other.

12. The magnetic conductive device according to claim 10, characterized in that: The magnetic conductive device comprises two symmetrical halves, wherein the first magnetic conductive segment (111) is divided into two halves, wherein one half of the first magnetic conductive segment (111), a second magnetic conductive segment (112), a third magnetic conductive segment (113), and a magnetic conductive foot (12) are sequentially connected as a whole to form one half of the magnetic conductive device (1), and the other half of the first magnetic conductive segment (111), another second magnetic conductive segment (112), another third magnetic conductive segment (113), and another magnetic conductive foot (12) are sequentially connected as a whole to form the other half of the magnetic conductive device (1); Alternatively, the magnetic conductive device comprises a first magnetic conductive segment (111) and a first part and a second part symmetrically arranged at two ends of the first magnetic conductive segment (111); a magnetic conductive foot (12), a third magnetic conductive segment (113), and a second magnetic conductive segment (112) are sequentially connected as a whole to form the first part; another magnetic conductive foot (12), another third magnetic conductive segment (113), and another second magnetic conductive segment (112) are sequentially connected as a whole to form the second part; Alternatively, the magnetic conductive device comprises a U-shaped third part and a symmetrical first part and a second part assembled on the inner sides of two arms of the third part; a magnetic conductive foot (12) and a third magnetic conductive segment (113) are integrally connected to form the first part; another magnetic conductive foot (12) and another third magnetic conductive segment (113) are integrally connected to form the second part; and two second magnetic conductive segments (112) are integrally connected to two ends of the first magnetic conductive segment (111) to form the U-shaped third part; Alternatively, the magnetic conductive device comprises a first part and a second part, wherein a magnetic conductive foot (12), a third magnetic conductive segment (113), and a second magnetic conductive segment (112) are sequentially connected as a whole to form the first part, and another magnetic conductive foot (12), another third magnetic conductive segment (113), another second magnetic conductive segment (112), and the first magnetic conductive segment (111) are sequentially connected as a whole to form the second part.

13. The magnetic conductive device according to claim 1, characterized in that: The distance between the two magnetic conductive feet (12) is d1, and the size of the electromagnetic channel (14) formed by the magnetic conductive ring (11) in the arrangement direction of the two magnetic conductive feet (12) is d2, and d1=d2.

14. The magnetic conductive device according to claim 1 or 13, characterized in that: The magnetic conductive ring (11) comprises a first magnetic conductive segment (111) arranged opposite to the gap (15) and two second magnetic conductive segments (112) arranged at intervals at both ends of the first magnetic conductive segment (111) along a third direction; the two second magnetic conductive segments (112) are correspondingly connected to the two magnetic conductive feet (12) and are arranged at equal intervals; the gap (15) is formed between the two second magnetic conductive segments (112) and the connection points with the magnetic conductive feet (12).

15. The magnetic conductive device according to claim 14, characterized in that: The first magnetic conductive segment (111) is a straight structure arranged along the first direction in the width direction and along the third direction in the length direction; the second magnetic conductive segment (112) is a straight structure arranged along the first direction in the width direction and along the second direction in the length direction; the magnetic conductive foot (12) is a straight structure arranged along the second direction in the width direction and along the first direction in the length direction; the first direction, the second direction and the third direction are perpendicular to each other.

16. The magnetic conductive device according to claim 14, characterized in that: The connected second magnetic conductive section (112) and the magnetic conductive foot (12) are in the same plane as the bent head (13) at the end of the magnetic conductive foot (12).

17. The magnetic conductive device according to claim 14, characterized in that: The magnetic conductive device comprises two symmetrical halves, wherein the first magnetic conductive segment (111) is divided into two halves, wherein one half of the first magnetic conductive segment (111), a second magnetic conductive segment (112), and a magnetic conductive foot (12) are sequentially connected as a whole to form one half of the magnetic conductive device (1), and the other half of the first magnetic conductive segment (111), another second magnetic conductive segment (112), and another magnetic conductive foot (12) are sequentially connected as a whole to form the other half of the magnetic conductive device (1); Alternatively, the magnetic conductive device comprises a first magnetic conductive segment (111) and a first part and a second part symmetrically arranged at two ends of the first magnetic conductive segment (111); a magnetic conductive foot (12) and a second magnetic conductive segment (112) are integrally connected to form the first part; and another magnetic conductive foot (12) and another second magnetic conductive segment (112) are integrally connected to form the second part; Alternatively, the magnetic conductive device comprises a first part and a second part, wherein a magnetic conductive foot (12) and a second magnetic conductive segment (112) are integrally connected to form the first part, and another magnetic conductive foot (12), another second magnetic conductive segment (112), and the first magnetic conductive segment (111) are sequentially integrally connected to form the second part.

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