CN118136464A

CN118136464A - Relay and ammeter

Info

Publication number: CN118136464A
Application number: CN202410480678.8A
Authority: CN
Inventors: 代文广; 李方能; 刘桐; 张杰郎
Original assignee: Xiamen Hongfa Electric Power Controls Co Ltd
Current assignee: Xiamen Hongfa Electric Power Controls Co Ltd
Priority date: 2024-04-19
Filing date: 2024-04-19
Publication date: 2024-06-04

Abstract

The application discloses a relay and an ammeter. The relay comprises a static contact set, a movable magnetizer set and a static magnetizer; the movable magnetizer group and the movable contact group are relatively fixed and are relatively arranged with the static magnetizer along the X-axis direction; the static magnetizer is fixed relative to one of other parts except the movable contact piece group and the movable magnetizer group, the static contact points of the two static contact pieces are respectively positioned at two sides of the static magnetizer along the Y-axis direction, the projection of the part, which is suitable for being contacted with the movable contact piece group, on the second projection plane perpendicular to the Y-axis direction is positioned in the projection of the static magnetizer on the second projection plane, and the surface of the static magnetizer, which faces the movable magnetizer group, is closer to the movable magnetizer group along the X-axis direction than all the static contact points. The ammeter comprises the relay. By adopting the technical scheme, compared with a relay in the prior art, the relay is less prone to damage and longer in service life.

Description

Relay and ammeter

Technical Field

The application relates to the field of relays, in particular to a relay and an ammeter.

Background

In the prior art, there is a relay including a receiving member, a pushing member, a contact member group, and an elastic member group. The pushing piece is driven by the armature to move along the Y-axis direction. The contact element group comprises a movable contact element group and two static contact element groups, the static contact element groups are fixedly connected with the accommodating element and comprise two static contact elements, the two static contact elements are distributed along the Y-axis direction and are used for being electrically connected with an external circuit, the movable contact element groups are pushed by the pushing element to be closed or opened with the static contact element groups along the X-axis direction, and when the movable contact element groups are closed with the static contact element groups, the two static contact elements are communicated; when the movable contact piece group is disconnected from the static contact piece group, the two static contact pieces are disconnected. The movable contact group comprises at least one movable contact, and the movable contact is generally provided with an overcurrent bridge extending along the X-axis direction and two movable contacts fixedly connected with the overcurrent bridge and distributed along the X-axis direction. The two movable contacts are arranged corresponding to the two static contacts. The stationary contact is provided with a stationary contact corresponding to the movable contact along the Y-axis direction. The elastic piece group is generally arranged between the pushing piece and the contact piece group, stores energy when the movable contact piece abuts against the two static contact pieces, and releases energy when the movable contact piece is far away from the two static contact pieces. By arranging the elastic element group, after the movable contact point is contacted with the corresponding fixed contact point through the contact stroke, the pushing element can further move along the Y-axis direction and compress the elastic element group, so that the movable contact point has an over-stroke. The relay has the advantage that the safety distance between the movable contact element group and the static contact element group is twice as long as the closing stroke of the movable contact element group, so that the relay has better pressure resistance. Here, the closing stroke refers to a distance between the movable contact and the corresponding stationary contact along the Y-axis direction when the movable contact group is far away from the stationary contact group. The applicant found that the relay of the above structure is easily damaged and has a short life.

Disclosure of Invention

The present application aims to overcome the above-mentioned drawbacks or problems of the prior art and to provide a relay and an electricity meter, wherein the relay is less prone to damage and has a longer lifetime than the relays of the prior art.

In order to achieve the above purpose, the following technical scheme is adopted:

the first technical scheme relates to a relay, which comprises a static contact element group and a movable contact element group, wherein the static contact element group comprises two static contact elements, each static contact element is provided with a static contact point, and the static contact points of the two static contact elements are distributed along the Y-axis direction; the movable contact element group is closed or opened with the static contact element group along the X-axis direction so as to correspondingly switch on or off the electric connection between the two static contact elements; the magnetic field generator also comprises a movable magnetizer group and a static magnetizer; the movable magnetizer group and the movable contact group are relatively fixed and are relatively arranged with the static magnetizer along the X-axis direction; the static magnetizer is fixed relative to one of other parts except the movable contact piece group and the movable magnetizer group, and the static contacts of the two static contact pieces are respectively positioned at two sides of the static magnetizer along the Y-axis direction; the projection of the parts, which are suitable for being contacted with the movable contact piece group, on the second projection plane perpendicular to the Y-axis direction is positioned in the projection of the static magnetizer on the second projection plane, and the surface, which faces the movable magnetizer group, of the static magnetizer is closer to the movable magnetizer group along the X-axis direction than the surfaces of all the static contact points.

The second technical scheme is based on the first technical scheme, and the device further comprises a containing piece, wherein the static contact piece group and the static magnetizer are fixedly connected to the containing piece.

The third technical scheme is based on the second technical scheme, wherein the movable contact group comprises a movable contact, the movable contact comprises an overcurrent bridge and two movable contacts, the overcurrent bridge extends along the Y-axis direction, the two movable contacts are fixedly connected to the overcurrent bridge, and the two movable contacts are distributed along the Y-axis direction and are opposite to the stationary contacts of the two stationary contacts along the X-axis direction.

The fourth technical scheme is based on the third technical scheme, wherein the movable magnetizer group comprises a movable magnetizer, the movable magnetizer is arranged corresponding to the movable contact, the movable magnetizer is provided with a magnetic conductive body and an extension part, the magnetic conductive body extends along the Z-axis direction and is fixedly connected to the back surface of the overcurrent bridge, and the extension part extends along the closing direction from the magnetic conductive body.

A fifth technical solution is based on the second technical solution, wherein at least one stationary contact is provided with a reverse flow portion extending along the Y-axis direction, and an overcurrent direction of the reverse flow portion is opposite to an overcurrent direction of the overcurrent bridge; the static magnetizer is positioned between the reverse flow part and the movable magnetizer group along the X-axis direction.

The sixth technical solution is based on the second technical solution, wherein the stationary contact extends from a first surface of the stationary contact perpendicular to the X-axis direction, the stationary magnetizer is provided with a second surface facing away from the movable magnetizer group and perpendicular to the X-axis direction, and the second surface is closer to the movable magnetizer group than the first surface along the X-axis direction.

The seventh technical scheme is based on the second technical scheme, at least one static contact is provided with a cross-flow part, and the cross-flow part extends along the disconnection direction on the outer side of the movable contact group along the Y-axis direction; when the movable contact element group and the static contact element group are closed, a magnetic field formed by current passing through the cross flow part acts on the overcurrent bridge to apply magnetic acting force to the movable contact element towards the static contact element group.

The eighth technical scheme is based on the second technical scheme, and the device further comprises two blocking pieces, wherein the two blocking pieces are fixedly connected to the accommodating piece and are positioned on the outer side of the static contact piece group along the Y-axis direction, and each blocking piece extends along the X-axis direction, so that the projection of the part, which is suitable for being contacted with the movable contact, of each static contact on the second projection surface perpendicular to the Y-axis direction is positioned in the projection of each blocking piece on the second projection surface; the blocking piece is made of high-temperature resistant insulating materials.

The ninth technical scheme is based on the second technical scheme, further comprising a pushing piece, an elastic support group and a limiting piece; the pushing piece is used for driving the movable contact piece group to move along the X-axis direction; the elastic support is assembled on the pushing piece and is positioned between the pushing piece and the movable contact piece group along the X-axis direction; the limiting piece is fixed relative to the pushing piece and abuts against the movable contact piece group along the disconnection direction when the movable contact piece group is disconnected from the static contact piece group.

A tenth technical means relates to an electricity meter comprising the relay of any one of the first to ninth technical means.

Compared with the prior art, the scheme has the following beneficial effects:

in the first technical scheme, the projections of the parts, which are suitable for being contacted with the movable contact points, of all the stationary contact points on the second projection plane perpendicular to the Y-axis direction are positioned in the projections of the stationary magnetizers on the second projection plane, and the surfaces of the stationary magnetizers, which face the movable magnetizer group, are closer to the movable magnetizer group along the X-axis direction than all the stationary contact points. Therefore, when the movable contact assembly breaks and draws the arc from the static contact assembly, the magnetic fields generated by the arcs at the two sides gather on the static magnetizer, so that the arc is not easy to spread to the two sides along the Y-axis direction, the ablation of the arc escape between the movable contact and the static contact to the peripheral accommodating parts can be reduced, the relay is not easy to damage, and the service life is longer.

In the first technical scheme, the movable magnetizer group and the static magnetizer form an anti-short-circuit magnetic loop when the movable contact group overflows, so that the movable magnetizer group and the movable contact group are subjected to magnetic acting force along the closing direction, and the movable contact group can be more reliably closed with the static contact group. Because the magnetic acting force is increased along with the increase of the current, when the relay bears a fault high current, the relay is beneficial to avoiding the moving contact element group from being separated from the static contact element group, thereby avoiding the damage of the relay caused by destructive arc pulling.

In the first technical scheme, the static contacts of the two static contacts are respectively positioned at two sides of the static magnetizer along the Y-axis direction, so that the magnetic acting force of an anti-short circuit magnetic loop formed by the static magnetizer and the movable magnetizer group to the movable contact group is more balanced along the Y-axis direction, and the two movable contacts are not easy to separate from the corresponding static contacts.

In the second technical scheme, the static magnetizer and the static contact component group are fixedly connected to the accommodating component, so that the static magnetizer and the static contact component group are easier to install.

In the third technical scheme, two movable contacts of the movable contact are distributed along the Y-axis direction and fixedly connected to an overcurrent bridge extending along the Y-axis direction, so that current passing through the overcurrent bridge flows along the Y-axis direction, a magnetic loop for resisting short circuit is formed conveniently, the magnetic loop for resisting short circuit is used for enabling the movable contact group to be reliably closed with the static contact group, and when the relay bears high fault current, the movable contact group is prevented from being separated from the static contact group, so that damage to the relay caused by destructive arc pulling is avoided.

In the fourth technical scheme, the movable magnetizers are arranged corresponding to the movable contact pieces, so that an anti-short-circuit magnetic loop can be formed around each movable contact piece, and each movable contact piece is not easy to separate from the static contact piece group. The magnetic conduction body is fixedly connected to the back of the overcurrent bridge, so that most of magnetic fields generated by current of the overcurrent bridge are restrained in the short-circuit-resistant magnetic circuit, and the magnetic efficiency is improved. The extension part extends from the magnetic conduction body along the closing direction, so that when the movable contact assembly and the static contact assembly are closed, the air gap between the movable magnetic conductor and the static magnetic conductor is smaller, the magnetic resistance of the anti-short circuit magnetic loop is smaller, and the movable contact assembly is less prone to being separated from the static contact assembly. Therefore, the movable contact group can be reliably closed with the static contact group, and when the relay bears a fault heavy current, the movable contact group is prevented from being separated from the static contact group, so that the relay is prevented from being damaged due to destructive arc pulling.

In the fifth technical scheme, the overcurrent direction of the reverse flow part is opposite to the overcurrent direction of the overcurrent bridge, and the static magnetizer is positioned between the reverse flow part and the movable magnetizer group along the X-axis direction, so that the magnetic induction line direction of the magnetic field generated by the reverse flow part on the side of the static magnetizer is the same as the magnetic induction line direction formed by the anti-short-circuit magnetic loop on the side of the static magnetizer, the magnetic field intensity of the static magnetizer is enhanced, the magnetic acting force formed between the static magnetizer and the movable magnetizer group is stronger, and when the relay bears a large fault current, the movable magnetizer group is not easy to separate from the static magnetizer group, thereby avoiding damage to the relay caused by destructive arc pulling.

In the sixth technical scheme, the second surface is closer to the movable magnetizer group than the first surface along the X-axis direction, so that the static magnetizer is not embedded between parts of the two static contacts except the static contact along the Y-axis direction, the creepage distance between the static contacts and the static magnetizer is increased, and the voltage withstand capability of the relay is improved.

In the seventh technical scheme, the stationary contact is provided with a cross-flow part, and the cross-flow part is positioned at the outer side of the movable contact group along the Y-axis direction and extends along the disconnection direction. The magnetic field generated by the current of the current crossing part acts on the overcurrent bridge with the overcurrent direction being the Y-axis direction, and generates magnetic acting force towards the static contact group for the overcurrent bridge, so that the movable contact group can be more reliably closed with the static contact group due to the magnetic acting force, and the magnetic acting force is increased along with the increase of the current, so that the movable contact group is prevented from being separated from the static contact group when the relay bears high fault current, and the relay is prevented from being damaged due to destructive arc pulling.

In an eighth technical solution, two blocking members are fixedly connected to the accommodating member and located at the outer side of the static contact member set along the Y axis direction, and each blocking member extends along the X axis direction, so that the projection of the portion of each static contact adapted to contact with the movable contact on the second projection plane perpendicular to the Y axis direction is located in the projection of each blocking member on the second projection plane. Therefore, when the movable contact element group breaks the arc from the static contact element group, the arc is not conducted to two side walls of the accommodating element along the Y-axis direction, and the insulating performance of the accommodating element is ensured. The barrier is made of high-temperature-resistant insulating materials, so that when the load is large and the electric arc is pulled to generate large heat, the barrier is prevented from being damaged by the heat of the electric arc, the barrier is prevented from being damaged, and the load capacity of the relay is improved.

In the ninth technical scheme, the elastic support group is arranged between the pushing piece and the movable contact group, and can provide elastic force for the movable contact group along the closing direction after the pushing piece goes through the overtravel, so that the movable contact group can be more reliably closed with the static contact group, and when the relay bears high fault current, the movable contact group is less prone to being separated from the static contact group, thereby avoiding damage to the relay caused by destructive arc pulling. The elastic support group can also generate extra repulsive force when the movable contact group breaks from the static contact group, so that the movable contact is helped to be disconnected from the static contact group.

In the ninth technical scheme, through setting up the locating part, when can guaranteeing that movable contact group and quiet contact group disconnection, the distance between movable contact group and the quiet contact group accords with the design requirement.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments, the following brief description of the drawings is provided, in which:

FIG. 1 is an exploded perspective view of a relay according to an embodiment;

FIG. 2 is a top view of a housing in accordance with the first embodiment;

FIG. 3 is a perspective view of a cover in accordance with one embodiment;

FIG. 4 is a perspective view of a stationary contact set according to the first embodiment;

FIG. 5 is a perspective view of a static magnetic conductor according to the first embodiment;

FIG. 6 is a top view of a static magnetic conductor according to the first embodiment;

FIG. 7 is a front view of a magnetic circuit portion in the first embodiment;

FIG. 8 is a top view of a coil assembly according to an embodiment;

fig. 9 is a top view of an armature assembly according to the first embodiment;

fig. 10 is a right side view of the armature assembly of the first embodiment;

Fig. 11 is a perspective view of a shield in the first embodiment;

fig. 12 is a schematic view showing a state of a magnetic circuit portion when the armature assembly is in a magnetically held state in the first position in the first embodiment;

FIG. 13 is a schematic view showing a state of a magnetic circuit portion when a coil winding set receives a first pulse electric signal according to the first embodiment;

fig. 14 is a schematic view showing a state of a magnetic circuit portion when the armature assembly moves to the second position in the first embodiment;

fig. 15 is a schematic view showing a state of a magnetic circuit portion when the armature assembly is in a magnetically held state at the second position in the first embodiment;

FIG. 16 is a schematic view showing a state of a magnetic circuit portion when a coil winding set in the first embodiment receives a second pulse electric signal;

Fig. 17 is a schematic view showing a state of a magnetic circuit portion when the armature assembly moves to the first position in the first embodiment;

fig. 18 is a top view of a movable contact portion in the first embodiment;

FIG. 19 is a front view of a pusher member of the first embodiment;

fig. 20 is an exploded perspective view of part of the movable contact portion in the first embodiment;

FIG. 21 is a right side view of the stop member of the first embodiment;

FIG. 22 is a cross-sectional view taken along line A-A of FIG. 21;

fig. 23 is a schematic view showing an internal structure of the relay in the off state according to the embodiment;

Fig. 24 is a schematic view of an internal structure of the relay in the on state according to the embodiment;

FIG. 25 is a right side view of a relay according to the first embodiment;

fig. 26 is a B-B cross-sectional view of fig. 25.

The main reference numerals illustrate:

1. A relay; 2. a fixing portion; 3. a magnetic circuit portion; 4. a movable contact part; 5. a micro-switch; 6. a receiving member; 7. a stationary contact group; 8. a static magnetizer; 9. a barrier; 10. a housing; 11. a cover body; 12. a cavity; 13. a chute; 14. a first trough section; 15. a second trough section; 16. a static magnetizer groove; 17. a barrier groove; 18. an abutment surface; 19. a stationary contact; 20. a stationary contact; 21. a connection terminal; 22. a first stationary contact; 23. a second stationary contact; 24. a first overcurrent section; 25. a first stationary contact; 26. a second overflow portion; 27. a third overcurrent section; 28. a fourth overcurrent section; 29. a fifth overcurrent section; 30. a sixth overcurrent section; 27a, measuring terminals; 31. a first connection terminal; 32. a seventh overcurrent section; 33. a second stationary contact; 34. an eighth overcurrent section; 35. a ninth overcurrent section; 36. a second connection terminal; 37. a coil assembly; 38. an armature assembly; 39. a shield; 40. a coil former; 41. a coil winding; 42. a signal input terminal; 43. an iron core; 44. a yoke; 45. a magnetic drive end; 46. a first yoke; 47. a second yoke; 48. a first magnetic drive end; 49. a second magnetic drive end; 50. a permanent magnet member; 51. an armature; 52. a first permanent magnet member; 53. a second permanent magnet; 54. a magnetic pole; 55. a first magnetic pole; 56. a second magnetic pole; 57. a first armature; 58. a second armature; 59. portions crossing each other; 60. a suction part; 61. a first engaging portion; 62. a second engaging portion; 63. a third engaging portion; 64. a fourth engaging portion; 65. a first shield; 66. a second shield; 67. a shielding wall; 68. a connecting wall; 69. a groove; 70. a pushing member; 71. a connecting piece; 72. a movable contact group; 73. a moving magnetizer group; 74. an elastic support group; 75. an elastic member; 76. a limiting piece; 77. pushing the body; 78. a second guide part; 79. an accommodating portion; 80. a first insert portion; 81. a second insert portion; 82. a connecting column; 83. a moving spring; 84. a connection end; 85. a movable contact; 86. an overcurrent bridge; 87. a movable contact; 88. a first movable contact; 89. a second movable contact; 90. a movable magnetizer; 91. a magnetic conductive body; 92. an extension; 93. an elastic support; 94. a frame body; 95. a first elastic portion; 96. a first connection hole; 97. a first elastic arm; 98. a main body; 99. a second elastic part; 100. a second connection hole; 101. a second elastic arm; 102. a limit body; 103. a first guide part; 104. a limit part; 105. a connection part; 106. avoidance holes; 107. a fitting hole; 108. a bending part; 109. a guide part; 110. a static contact terminal; f1, a first magnetic acting force; m1, an anti-short circuit magnetic loop; m2, a reverse flow magnetic field; s1, a first surface; s2, a second surface; w, interval; x1, closing direction; x2, the disconnection direction.

Detailed Description

In the claims and in the description other than the embodiments, the term "fixed relative to one of the other components than the movable contact group and the movable magnetic conductor" essentially means that the static magnetic conductor is fixed relative to the other component located in front of the movable magnetic conductor in the closing direction, generally to the receiving element or the stationary contact, and in particular to the limiting element.

In the claims and the specification excluding the embodiments, the terms "X-axis direction", "Y-axis direction", and "Z-axis direction" merely mean that features having one of the above directions and features having the other direction are perpendicular to each other, and do not require that they must be implemented as "X-axis direction", "Y-axis direction", and "Z-axis direction" described in the embodiments. In an embodiment, the X-axis direction is perpendicular to the Y-axis direction and also perpendicular to the Z-axis direction. The X-axis direction may be divided into a front direction and a rear direction, wherein the left side is the front side and the right side is the rear side in fig. 23 of the specification, and the X-axis direction may be further divided into a closing direction and an opening direction, wherein the closing direction refers to a movement direction when the movable contact group moves to a state of being closed with the static contact group, namely, a direction from rear to front, and a direction from right to left in fig. 23 of the specification; the disconnection direction refers to a movement direction when the movable contact group moves to a disconnected state with the static contact group, namely a front-to-back direction, and is a left-to-right direction in the drawing 23 of the specification; the Y-axis direction can be divided into left and right, and the upper side is left and the lower side is right in the attached drawing 23 of the specification; the Z-axis direction may be divided into upper and lower.

In the claims and in the description, unless otherwise defined, the terms "first," "second," or "third," etc., are used for distinguishing between different objects and not for describing a particular sequential order.

In the claims and specification, unless otherwise defined, the terms "fixedly coupled," "fixedly coupled," or "relatively fixed" are to be construed broadly as any connection without a displacement relationship or a relative rotation relationship therebetween, and are intended to include non-removably, integrally, and fixedly coupled by other means or elements.

In the claims and specification, unless otherwise defined, the terms "comprising," having, "and variations thereof mean" including but not limited to.

In the claims and the description, unless otherwise defined, the term "provided" means that the technical feature located thereafter is a part of the technical feature located before it.

In the claims and the description, unless otherwise defined, the term "group" is a collective meaning, which may include one element or a plurality of elements, for example, a "movable contact group" may include one movable contact or two or more movable contacts, unless otherwise defined.

In the claims and the description, unless otherwise defined, the term "temporary formation" means that the polarity of the magnetic drive end formed by the pulsed electrical signal disappears with the disappearance of the pulsed electrical signal.

In the claims and the description, unless otherwise defined, the term "reverse" means that when the current direction of the pulse electric signal received by the coil winding this time is different from the current direction of the pulse electric signal received last time, the polarity of the magnetic driving end formed temporarily this time is opposite to the polarity of the magnetic driving end formed temporarily last time. Of course, it should be understood by those skilled in the art that, for the magnetic latching relay, if the current direction of the pulse electric signal received by the coil assembly this time is the same as the current direction of the pulse electric signal received last time, the pulse electric signal received this time is of no control significance, and the state of the relay will not change.

In the claims and the description, unless otherwise defined, the term "rear face" means that the face is oriented away from the stationary contact set.

In the claims and specification, unless otherwise defined, the term "mounted" means directly or indirectly connected to one another.

Example 1

The relay 1 is used for receiving an electric signal to control the on-off of an external circuit. Specifically, the relay 1 in the present embodiment is a magnetic latching relay for receiving a pulse electric signal to control on-off of an external circuit. In this embodiment, the pulse electric signal may be divided into a first pulse electric signal and a second pulse electric signal. The first pulse electric signal is correspondingly used for controlling the external circuit to be turned on, and the second pulse electric signal is correspondingly used for controlling the external circuit to be turned off. The relay 1 is switched from an off state to an on state after receiving the first pulse electric signal, and the relay 1 is kept in the on state until receiving the second pulse electric signal after the first pulse electric signal disappears; the relay 1 is switched from the on state to the off state after receiving the second pulse electric signal, and after the second pulse electric signal disappears, the relay 1 is kept in the off state until receiving the first pulse electric signal. In this embodiment, the external circuit is a single-phase ac circuit. The relay 1 needs to control the on-off of a single-phase alternating current circuit.

Referring to fig. 1, fig. 1 shows the structure of a relay 1 of the present embodiment. As shown in fig. 1, the relay 1 includes a fixed portion 2, a magnetic circuit portion 3, a movable contact portion 4, and a micro switch 5. The fixed parts 2 are fixed relative to each other and serve as a reference for movement of the movable contact part 4. The magnetic circuit part 3 is used for receiving the pulse electric signal and driving the movable contact part 4 to move based on the pulse electric signal. The movable contact part 4 is driven by the magnetic circuit part 3 to move along the X-axis direction relative to the fixed part 2 so as to control the on-off of an external circuit. The micro switch 5 is used for sending a relay state signal to an external relay state sensing circuit.

As shown in fig. 1, the fixed part 2 includes a receiving piece 6, a stationary contact group 7, a stationary magnetizer 8, and a blocking piece 9.

As shown in fig. 1, the material of the accommodating element 6 is plastic, and the accommodating element 6 includes a housing 10 and a cover 11.

Referring to fig. 2, fig. 2 shows a housing 10 in the present embodiment. As shown in fig. 2, the housing 10 is provided with a cavity 12, and the cavity 12 is opened upward in the Z-axis direction and is used for accommodating the stationary contact group 7, the stationary magnetizer 8, the blocking member 9, the magnetic circuit portion 3, the movable contact portion 4, and the micro switch 5. The bottom wall of the housing 10 is provided with a chute 13 at the middle in the Y-axis direction, and the chute 13 extends in the X-axis direction and is divided into a first chute section 14 and a second chute section 15. The first slot section 14 is located in front of the second slot section 15. In the present embodiment, the first groove section 14 and the second groove section 15 of the housing 10 are separated from each other in the X-axis direction, and in other embodiments, the first groove section 14 and the second groove section 15 of the housing 10 may be disposed to meet each other in the X-axis direction. A static magnetizer slot 16 is arranged in front of the first slot section 14. The first groove section 14 is provided with a blocking piece groove 17 on the left and right sides in the Y-axis direction, respectively. The rear parts of the two barrier grooves 17 are respectively provided with an abutting surface 18, and the abutting surfaces 18 are arranged forward.

Referring to fig. 3, fig. 3 shows a cover 11 in the present embodiment. As shown in fig. 3, the cover 11 is fixedly connected with the housing 10 and is used for shielding the accommodating cavity 12. The cover 11 is likewise provided with a slide groove 13, the slide groove 13 extending in the X-axis direction and being divided into a first groove section 14 and a second groove section 15. The first groove section 14 of the cover 11 is disposed corresponding to the first groove section 14 of the housing 10 along the Z-axis direction. The second groove section 15 of the cover 11 is disposed corresponding to the second groove section 15 of the housing 10 along the Z-axis direction. In the present embodiment, the first groove section 14 and the second groove section 15 of the cover 11 are separated from each other in the X-axis direction, and in other embodiments, the first groove section 14 and the second groove section 15 of the cover 11 may be disposed to meet each other in the X-axis direction.

Referring to fig. 4, 23 and 26, fig. 4, 23 and 26 show the stationary contact set 7 in the present embodiment. The stationary contact group 7 is used for electrical connection with an external circuit. The stationary contact set 7 comprises two stationary contacts 19. Each stationary contact 19 is provided with a stationary contact 20 and a connection terminal 21. The connection terminal 21 is used for connecting an external circuit. One of the two connection terminals 21 is for connecting a power source, and the other is for connecting a load. When the two static contacts 19 are conducted, the power supply is conducted with the load; when the two stationary contacts 19 are turned off, the power supply and the load are turned off. Specifically, in the present embodiment, the two stationary contacts 19 are a first stationary contact 22 and a second stationary contact 23, respectively. The first stationary contact 22 is provided with a first flow-through portion 24, a first stationary contact 25, a second flow-through portion 26, a third flow-through portion 27, a fourth flow-through portion 28, a fifth flow-through portion 29, and a sixth flow-through portion 30. The first flow-through portion 24 extends perpendicular to the X-axis direction and along the Z-axis direction. The first flow-through portion 24 is provided with a first surface S1 facing rearward in the X-axis direction. The first stationary contact 25 is the stationary contact 20 of the first stationary contact 22. The number of the first stationary contacts 25 is two, and the two first stationary contacts 25 are arranged along the Z-axis direction. Two first stationary contacts 25 extend rearward in the X-axis direction from the first surface S1 of the first flow-through portion 24. The second flow-through portion 26 extends forward in the X-axis direction from the right side of the first flow-through portion 24 in the Y-axis direction. The third flow-through portion 27 extends rightward in the Y-axis direction from the front end of the second flow-through portion 26 in the X-axis direction, and as shown in fig. 23, the third flow-through portion 27 penetrates the container 6 rightward in the Y-axis direction. As shown in fig. 4, the lower portion of the third flow-through portion 27 in the Z-axis direction is provided with a measurement terminal 27a extending downward in the Z-axis direction, and as shown in fig. 26, the measurement terminal 27a protrudes downward in the Z-axis direction out of the housing 6. As shown in fig. 4, the fourth flow-through portion 28 extends rearward in the X-axis direction from the right side of the third flow-through portion 27 in the Y-axis direction. The fifth flow-through portion 29 extends rightward in the Y-axis direction from the fourth flow-through portion along the rear end of the X-axis. The sixth flow-through portion 30 extends rearward in the X-axis direction from the right side of the fifth flow-through portion 29 in the Y-axis direction and from the lower portion in the Z-axis direction. In the present embodiment, the portion of the third overcurrent portion 27 extending out of the accommodating element 6, the fourth overcurrent portion, the fifth overcurrent portion, and the sixth overcurrent portion constitute the first connection terminal 31. The first connection terminal 31 is the connection terminal 21 of the first stationary contact 22. The second stationary contact 23 is provided with a seventh flow-through portion 32, a second stationary contact 33, an eighth flow-through portion 34, and a ninth flow-through portion 35. The seventh through-flow portion 32 is provided with a first surface S1 (not labeled in fig. 4) facing rearward in the X-axis direction. The first surface S1 of the seventh through-flow portion 32 and the first surface S1 of the first through-flow portion 24 are located on the same plane perpendicular to the X axis. The second stationary contact 33 is the stationary contact 20 of the second stationary contact 23. The number of the second stationary contacts 33 is two, and the two second stationary contacts 33 are arranged along the Z-axis direction. Two second stationary contacts 33 extend rearward in the X-axis direction from the first surface S1 of the seventh flow-through portion 32. The eighth through-flow portion 34 extends rearward in the X-axis direction from the right side of the seventh through-flow portion 32 in the Y-axis direction. The ninth flow-through portion 35 extends rightward in the Y-axis direction from a rear end of the eighth flow-through portion in the X-axis direction and a lower portion thereof in the Z-axis direction. As shown in fig. 23, the ninth flow-through portion 35 protrudes rightward in the Y-axis direction from the accommodating element 6. In the present embodiment, the ninth overcurrent section 35 constitutes the second connection terminal 36. The second connection terminal 36 is the connection terminal 21 of the second stationary contact 23. The second connection terminal 36 may be used to install a transformer. In this embodiment, the two connection terminals 21 are arranged along the X-axis direction and each extend out of the housing 6 along the Y-axis direction.

Referring to fig. 5 and 6, fig. 5 and 6 show the static magnetizer 8 in the present embodiment. As shown in fig. 5, the static magnetizer 8 extends in the Z-axis direction. As shown in fig. 6, the surface of the static magnetizer 8 forward in the X-axis direction forms a second surface S2. The second surface S2 is perpendicular to the X-axis direction.

Referring to fig. 1, fig. 1 shows a barrier 9 in this embodiment. In this embodiment, the number of the barriers 9 is two. Each barrier 9 is in the form of a sheet and extends in the X-axis direction and has a dimension in the Z-axis direction. Thus, both barriers 9 are perpendicular to the Y-axis direction. The barrier 9 is made of a high temperature resistant insulating material. Ceramic materials are used in this embodiment.

Referring to fig. 7, fig. 7 shows a magnetic circuit portion 3 in the present embodiment. As shown in fig. 7, the magnetic circuit portion 3 includes a coil assembly 37, an armature assembly 38, and a shield 39.

Referring to fig. 7 and 8, fig. 7 and 8 show a coil assembly 37 in the present embodiment. As shown in fig. 7 and 8, the coil assembly 37 includes a bobbin 40, a coil winding 41, a signal input terminal 42, an iron core 43, and a yoke 44. The bobbin 40 is fixedly connected with the housing 10. The bobbin 40 extends in the Y-axis direction and is provided with a center hole extending in the Y-axis direction. The coil form 40 is provided with retaining walls at both ends in the Y-axis direction, respectively. The coil winding 41 is wound around the bobbin 40 and is located between the two retaining walls. The axis of the coil winding 41 extends in the Y-axis direction. Two terminals of the coil winding 41 are connected to three signal input terminals 42, and the signal input terminals 42 are for receiving a pulse electric signal. The iron core 43 is disposed in the center hole of the bobbin 40 and extends in the Y-axis direction. The number of yokes 44 is two. Two yokes 44 are fixedly connected with two sides of the iron core 43 along the Y-axis direction respectively, and one ends of the two yokes 44, which are far away from the iron core 43, form magnetic driving ends 45 respectively. The two magnetic drive ends 45 are arranged in the Y-axis direction and extend close to each other in the Y-axis direction. The two yokes 44 are a first yoke 46 and a second yoke 47, respectively. The two magnetic drive ends 45 are a first magnetic drive end 48 and a second magnetic drive end 49, respectively. The first magnetic drive end 48 is formed at the first yoke 46 and the second magnetic drive end 49 is formed at the second yoke 47. The coil winding 41 is excited by the pulse electric signal to reverse the polarity temporarily formed by the two magnetic driving ends 45 so as to switch and attract different parts of the two armatures 51 in the X-axis direction and drive the armature assembly 38 to move in the X-axis direction. In the present embodiment, for convenience of description, it is assumed that when the signal input terminal 42 receives the first pulse electric signal, the coil winding 41 generates the first magnetic field, and the first magnetic driving end 48 temporarily has the N-pole polarity, and the second magnetic driving end 49 temporarily has the S-pole polarity. After the first pulse electric signal is extinguished, the first magnetic field of the coil winding 41 is extinguished, and the first magnetic drive end 48 and the second magnetic drive end 49 no longer have a polarity generated based on the first magnetic field; when the signal input terminal 42 receives a second pulse electric signal having a current direction opposite to that of the first pulse electric signal, the coil winding 41 generates a second magnetic field to reverse the polarity of the first magnetic driving terminal 48 to have an S-pole polarity and reverse the polarity of the second magnetic driving terminal 49 to have an N-pole polarity. After the second pulse electric signal is extinguished, the second magnetic field of the coil winding 41 is extinguished, and the first magnetic drive end 48 and the second magnetic drive end 49 no longer have a polarity based on the second magnetic field. The "temporary formation" in the present embodiment means that the polarity of the magnetic driving end 45 formed of the pulse electric signal disappears as the pulse electric signal disappears. In this embodiment, "reverse" means that when the current direction of the pulse electric signal received by the coil winding 41 is different from that of the pulse electric signal received last time, the polarity of the magnetic driving end 45 formed this time is opposite to that of the magnetic driving end 45 formed last time.

Referring to fig. 9 and 10, fig. 9 and 10 illustrate the armature assembly 38 in this embodiment. The armature assembly 38 is driven by the coil assembly 37 to move in the X-axis direction between the first position and the second position. When the armature assembly 38 moves to the first position, the relay 1 is in an off state and the external circuit is turned off. When the armature assembly 38 moves to the second position, the relay 1 is in a conductive state and the external circuit is turned on. Wherein the first position is further rearward in the X-axis direction than the second position. As shown in fig. 9 and 10, in the present embodiment, the armature assembly 38 includes two permanent magnet pieces 50 and two armatures 51. The two permanent magnet pieces 50 are formed by magnetized magnetic steel, and in other embodiments, other permanent magnet materials, such as neodymium iron boron permanent magnets, can be used for the two permanent magnet pieces 50. In the present embodiment, the two permanent magnet pieces 50 are a first permanent magnet piece 52 and a second permanent magnet piece 53, respectively. Each permanent magnet piece 50 is provided with two magnetic poles 54 with fixed polarities, and the two magnetic poles 54 are respectively a first magnetic pole 55 and a second magnetic pole 56. The first and second magnetic poles 55, 56 are opposite in polarity, and for convenience of description, it is assumed that the first magnetic pole 55 is N-pole and the second magnetic pole 56 is S-pole. In this embodiment, the two magnetic poles 54 of each permanent magnet 50 are arranged along the X-axis direction. In this embodiment, two permanent magnets 50 are arranged along the Y-axis direction. Wherein the first permanent magnet 52 is on the left side in the Y-axis direction and the second permanent magnet 53 is on the right side in the Y-axis direction. The first pole 55 of the first permanent magnet 52 is forward in the X-axis direction and the second pole 56 is rearward in the X-axis direction. The first pole 55 of the second permanent magnet 53 is behind in the X-axis direction and the second pole 56 is in front in the X-axis direction. The two armatures 51 are a first armature 57 and a second armature 58, respectively. The first armature 57 is fixedly connected with the first poles 55 of the two permanent magnet pieces 50. The second armature 58 is fixedly connected to the second poles 56 of the two permanent magnet pieces 50. The projections of the two armatures 51 on a first projection plane perpendicular to the Z-axis direction intersect each other. The portions 59 where the two armatures 51 cross each other form a space W in the Z-axis direction. Two engaging portions 60 are provided on both sides of each armature 51 in the Y-axis direction. Wherein, the first armature 57 is provided with a first engaging portion 61 and a second engaging portion 62 on both sides in the Y-axis direction, respectively, the first engaging portion 61 being on the left side in the Y-axis direction and being forward in the X-axis direction; the second engaging portion 62 is on the right side in the Y-axis direction and is rearward in the X-axis direction. The second armature 58 is provided with a third engaging portion 63 and a fourth engaging portion 64 on both sides in the Y-axis direction, respectively, the third engaging portion 63 being on the right side in the Y-axis direction and being forward in the X-axis direction; the fourth engaging portion 64 is on the left side in the Y-axis direction and is on the rear side in the X-axis direction. Therefore, in the present embodiment, the first engaging portion 61 and the third engaging portion 63 are arranged along the Y-axis direction, the fourth engaging portion 64 and the second engaging portion 62 are arranged along the Y-axis direction, the first engaging portion 61 and the fourth engaging portion 64 are arranged along the X-axis direction, and the third engaging portion 63 and the second engaging portion 62 are arranged along the X-axis direction. In this embodiment, the projection of the armature assembly 38 onto the first projection plane is mirror symmetric about a plane of symmetry perpendicular to the Y-axis direction.

Referring to fig. 7 and 11, fig. 7 and 11 show a shield 39 in the present embodiment. As shown in fig. 11, the shield 39 includes a first shield 65 and a second shield 66. The first shield 65 and the second shield 66 are in a plug-fit to form the shield 39. The shielding 39 is provided with two shielding walls 67 and a connecting wall 68. Each of the shielding walls 67 is provided with a groove 69 at a front end in the X-axis direction, and the groove 69 extends in the X-axis direction and is located at a middle portion of the shielding wall 67 in the Y-axis direction. As shown in fig. 7, both of the shielding walls 67 are disposed perpendicular to the Z-axis direction. Two shielding walls 67 are provided above and below the coil block 37 in the Z-axis direction. The connecting wall 68 is perpendicular to the X-axis direction and serves to connect the two shielding walls 67. The connection wall 68 is provided behind the coil block 37 in the X-axis direction.

Referring to fig. 12 to 17, fig. 12 to 17 show the operation principle of the magnetic circuit portion 3 in the present embodiment.

As shown in fig. 12, in this embodiment, the armature assembly 38 is located between two arms of the yoke 44 extending along the X-axis in the Y-axis direction. The first magnetic drive end 48 is located between the first engaging portion 61 and the fourth engaging portion 64 in the X-axis direction; the second magnetic drive end 49 is located between the third engaging portion 63 and the second engaging portion 62 in the X-axis direction.

Fig. 12 shows the state of the magnetic circuit portion 3 when the armature assembly 38 in the present embodiment is in the magnetic retaining state in the first position. As shown in fig. 12, when the armature assembly 38 is in the magnetically held state in the first position, the first engaging portion 61 engages the first magnetic drive end 48, and the third engaging portion 63 engages the second magnetic drive end 49. At this time, the magnetic circuit portion 3 forms two closed magnetic circuits, i.e., a first closed magnetic circuit and a second closed magnetic circuit. The first closed magnetic circuit returns from the first pole 55 of the first permanent magnet piece 52 to the first pole 55 of the first permanent magnet piece 52 via the first engaging portion 61, the first magnetic driving end 48, the first yoke 46, the iron core 43, the second yoke 47, the second magnetic driving end 49, the third engaging portion 63, the portion 59 where the second armature 58 crosses each other, the second pole 56 of the first permanent magnet piece 52, without any air gap therebetween, and through the entire coil assembly 37. The second closed magnetic circuit returns from the first pole 55 of the second permanent magnet piece 53, through the portion 59 of the first armature 57 that intersects each other, the first engaging portion 61, the first magnetic drive end 48, the first yoke 46, the core 43, the second yoke 47, the second magnetic drive end 49, the third engaging portion 63, the second pole 56 of the second permanent magnet piece 53, back to the first pole 55 of the second permanent magnet piece 53, without any air gap therebetween, and through the entire coil assembly 37. Therefore, when the armature assembly 38 is in the magnetic retaining state in the first position, the armature assembly 38 is retained in the first position relative to the coil assembly 37 due to the presence of the first and second closed magnetic circuits with a superimposed effect therebetween, resulting in a greater magnetic attraction between the first attraction portion 61 and the first magnetic drive end 48 and between the third attraction portion 63 and the second magnetic drive end 49.

Fig. 13 shows a state of the magnetic circuit portion 3 immediately after the coil assembly 37 in the present embodiment receives the first pulse electric signal. At this time, as shown in fig. 13, the coil winding 41 is excited by the first pulse electric signal to generate the first magnetic field, so that the first magnetic driving end 48 temporarily has the N-pole polarity, and the second magnetic driving end 49 temporarily has the S-pole polarity. Since the first magnetic driving end 48 and the first engaging portion 61 are both N-pole in the same polarity, the first magnetic driving end 48 generates a magnetic repulsive force to the first engaging portion 61; since the second magnetic driving end 49 and the third engaging portion 63 have the same polarity as the S-pole, the second magnetic driving end 49 generates a magnetic repulsive force to the third engaging portion 63. Furthermore, the magnetic circuit portion 3 now forms two pushing magnetic circuits, namely a first pushing magnetic circuit and a second pushing magnetic circuit. The first push magnetic circuit returns from the first magnetic driving end 48 to the first magnetic driving end 48 through the travel air gap, the fourth engaging portion 64, the second magnetic pole 56 of the first permanent magnet member 52, the first magnetic pole 55 of the first permanent magnet member 52, the portion 59 where the first armature 57 crosses each other, the second engaging portion 62, the travel air gap, the second magnetic driving end 49, the second yoke 47, the iron core 43, and the first yoke 46, with only two travel air gaps in between, and through the entire coil assembly 37. The second push magnetic circuit returns from the first magnetic drive end 48 to the first magnetic drive end 48 via the travel air gap, the fourth engaging portion 64, the portion 59 where the second armature 58 crosses each other, the second pole 56 of the second permanent magnet piece 53, the first pole 55 of the second permanent magnet piece 53, the second engaging portion 62, the travel air gap, the second magnetic drive end 49, the second yoke 47, the iron core 43, and the first yoke 46, with only two travel air gaps therebetween, and through the entire coil assembly 37. Therefore, when the coil assembly 37 just receives the first pulse electric signal, not only the first magnetic driving end 48 applies a magnetic repulsive force to the first engaging portion 61, but also the second magnetic driving end 49 applies a magnetic repulsive force to the third engaging portion 63, and because there is a first pushing magnetic circuit and a second pushing magnetic circuit with a superposition effect therebetween, the first magnetic driving end 48 generates a magnetic attraction force to the fourth engaging portion 64, and the second magnetic driving end 49 generates a magnetic attraction force to the second engaging portion 62, so that the coil assembly 37 can form a stronger pushing force to the armature assembly 38, and the armature assembly 38 is pushed to move from the first position to the second position along the closing direction X1.

Fig. 14 shows a state of the magnetic circuit portion 3 in the present embodiment in which the armature assembly 38 is driven to move in the closing direction X1 to the second position by the coil assembly 37. As shown in fig. 14, the first pulsed electrical signal and the first magnetic field have not yet been removed from the armature assembly 38 upon movement to the second position, the first magnetic drive end 48 remains temporarily N-polar and the second magnetic drive end 49 remains temporarily S-polar. At this time, the magnetic circuit portion 3 forms two closed magnetic circuits, namely, a third closed magnetic circuit and a fourth closed magnetic circuit. The third closed magnetic circuit returns from the first magnetic drive end 48, through the fourth engaging portion 64, the second magnetic pole 56 of the first permanent magnet 52, the first magnetic pole 55 of the first permanent magnet 52, the portion 59 of the first armature 57 that intersects each other, the second engaging portion 62, the second magnetic drive end 49, the second yoke 47, the iron core 43, the first yoke 46, back to the first magnetic drive end 48 without any air gap therebetween, and through the entire coil assembly 37. The fourth closed magnetic circuit returns from the first magnetic drive end 48, through the fourth engaging portion 64, the portion 59 where the second armature 58 crosses each other, the second pole 56 of the second permanent magnet piece 53, the first pole 55 of the second permanent magnet piece 53, the second engaging portion 62, the second magnetic drive end 49, the second yoke 47, the iron core 43, the first yoke 46, back to the first magnetic drive end 48 without any air gap therebetween, and through the entire coil assembly 37. Thus, when the armature assembly 38 has just moved to the second position, a greater magnetic attraction force is created between the first magnetic drive end 48 and the fourth actuation portion 64 and between the second magnetic drive end 49 and the second actuation portion 62 due to the presence of the third and fourth closed magnetic circuits and the additive effect therebetween.

Fig. 15 shows the state of the magnetic circuit portion 3 when the armature assembly 38 in the present embodiment is in the magnetically held state in the second position. As shown in fig. 15, when the first pulse electric signal is extinguished, the first magnetic field is extinguished, and the first magnetic drive end 48 and the second magnetic drive end 49 no longer have the polarity generated by the first magnetic field. At this time, the third closed magnetic circuit and the fourth closed magnetic circuit described above still exist, wherein the third closed magnetic circuit can be regarded as starting from the first magnetic pole 55 of the first permanent magnet piece 52, and the path thereof is the same as that of the third closed magnetic circuit shown in fig. 14; the fourth closed magnetic loop can be seen as starting from the first pole 55 of the second permanent magnet piece 53, the path of which is the same as the path of the fourth closed magnetic loop shown in fig. 14. And the third and fourth closed magnetic loops overlap each other such that a greater magnetic attraction force is created between the fourth actuation portion 64 and the first magnetic drive end 48 and between the second actuation portion 62 and the second magnetic drive end 49, the armature assembly 38 remains in the second position relative to the coil assembly 37.

Fig. 16 shows the state of the magnetic circuit portion 3 immediately after the coil assembly 37 in the present embodiment receives the second pulse electric signal. At this time, as shown in fig. 16, the coil winding 41 is excited by the second pulse electric signal to generate the second magnetic field, so that the first magnetic driving end 48 temporarily has the S-pole polarity, and the second magnetic driving end 49 temporarily has the N-pole polarity. Since the first magnetic driving end 48 and the fourth engaging portion 64 have the same polarity as each other and are S-poles, the first magnetic driving end 48 generates a magnetic repulsive force to the fourth engaging portion 64; since the second magnetic driving end 49 and the second engaging portion 62 are both N-pole in the same polarity, the second magnetic driving end 49 generates a magnetic repulsive force to the second engaging portion 62. Furthermore, the magnetic circuit part 3 now forms two pushing magnetic circuits, namely a third pushing magnetic circuit and a fourth pushing magnetic circuit. The third push magnetic circuit returns from the second magnetic driving end 49 to the second magnetic driving end 49 via the travel air gap, the third engaging portion 63, the portion 59 where the second armature 58 crosses each other, the second magnetic pole 56 of the first permanent magnet member 52, the first magnetic pole 55 of the first permanent magnet member 52, the first engaging portion 61, the travel air gap, the first magnetic driving end 48, the first yoke 46, the iron core 43, and the second yoke 47, with only two travel air gaps in between, and through the entire coil assembly 37. The fourth push magnetic circuit returns from the second magnetic driving end 49 to the second magnetic driving end 49 through the travel air gap, the third engaging portion 63, the second magnetic pole 56 of the second permanent magnet piece 53, the first magnetic pole 55 of the second permanent magnet piece 53, the portion 59 where the first armature 57 crosses each other, the first engaging portion 61, the travel air gap, the first magnetic driving end 48, the first yoke 46, the iron core 43, and the second yoke 47, with only two travel air gaps in between, and through the entire coil assembly 37. Therefore, when the coil assembly 37 just receives the second pulse electric signal, not only the first magnetic driving end 48 applies a magnetic repulsive force to the fourth engaging portion 64, but also the second magnetic driving end 49 applies a magnetic repulsive force to the second engaging portion 62, and because of the third pushing magnetic circuit and the fourth pushing magnetic circuit, and the superposition effect between them, the first magnetic driving end 48 generates a magnetic attraction force to the first engaging portion 61, and the second magnetic driving end 49 generates a magnetic attraction force to the third engaging portion 63, so that the coil assembly 37 can form a stronger pushing force to the armature assembly 38, and the armature assembly 38 is pushed to move from the second position to the first position along the opening direction X2.

Fig. 17 shows a state of the magnetic circuit portion 3 in the present embodiment in which the armature assembly 38 is driven by the coil assembly 37 to move to the first position in the opening direction X2. As shown in fig. 17, the second pulsed electrical signal and the second magnetic field have not yet been removed from the armature assembly 38 upon movement to the first position, the first magnetic drive end 48 remains temporarily S-polar and the second magnetic drive end 49 remains temporarily S-polar. At this time, the magnetic circuit portion 3 still has the first closed magnetic circuit and the second closed magnetic circuit shown in fig. 12, wherein the first closed magnetic circuit can be regarded as starting from the second magnetic drive end 49, and the path thereof is the same as that of the first closed magnetic circuit shown in fig. 12; the second closed magnetic circuit can be considered to originate from the second magnetic drive end 49 in the same path as the second closed magnetic circuit shown in fig. 12. Thus, when the armature assembly 38 has just moved to the first position, a greater magnetic attraction force is created between the first magnetic drive end 48 and the first attraction portion 61 and between the second magnetic drive end 49 and the third attraction portion 63 due to the presence of the first and second closed magnetic circuits and the additive effect therebetween.

When the second pulsed electrical signal is extinguished, the second magnetic field is extinguished and the first magnetic drive end 48 and the second magnetic drive end 49 no longer have the polarity generated by the second magnetic field. At this time, the armature assembly 38 is in a magnetically held state in the first position as shown in fig. 12.

Referring to fig. 18, fig. 18 shows the movable contact portion 4 in the present embodiment. As shown in fig. 18, the movable contact portion 4 includes a pushing member 70, a connecting member 71, a movable contact group 72, a movable magnetizer group 73, an elastic bracket group 74, an elastic member 75, and a stopper 76.

Referring to fig. 19, fig. 19 shows a pusher 70 and a connector 71 in the present embodiment. As shown in fig. 19, in the present embodiment, the armature assembly 38, the connecting member 71 and the moving spring 83 are fixedly connected to the pushing member 70, and specifically, the armature assembly 38, the connecting member 71 and the moving spring 83 are insert-molded integrally with the pushing member 70. The pushing member 70 is made of plastic. The pusher 70 is provided with a pusher body 77 and two second guides 78. The pushing body 77 is provided with a receiving portion 79, a first insert portion 80 and a second insert portion 81. The receiving portion 79 is for receiving the armature assembly 38. The first insert part 80 is for accommodating the connection member 71 and is located in front of the accommodating part 77 in the X-axis direction. The front surface of the first insert portion 78 is provided with two connecting posts 82. The two connecting posts 82 are arranged along the Z-axis direction. Each of the connecting posts 82 extends forward in the X-axis direction from the front surface of the first insert portion 80. The second insert part 81 is for accommodating the moving spring 83 and is located at the rear of the accommodating part 79 in the X-axis direction. The movable spring 83 is a part of the micro switch 5, which will be described later. The two second guide portions 78 extend away from each other in the Z-axis direction from the pushing body 77. In the present embodiment, the two second guide portions 78 extend away from each other in the Z-axis direction from the upper and lower surfaces of the accommodating portion 79 in the Z-axis direction, respectively, and the second guide portions 78 are provided in the middle of the accommodating portion 79 in the Y-axis direction and in the middle of the accommodating portion in the X-axis direction. The projection of each second guide portion 78 on the first projection plane perpendicular to the Z-axis direction is circular.

As shown in fig. 19, the connecting member 71 extends in the Z-axis direction, and both ends thereof in the Z-axis direction protrude from the first insert portion 80 to form two connecting ends 84, respectively.

Referring to fig. 20, fig. 20 shows a movable contact group 72, a movable magnetizer group 73, an elastic bracket group 74, and an elastic member 75 in the present embodiment. The movable contact group 72 is driven by the armature assembly 38 and the pushing member 70 insert-molded integrally with the armature assembly 38 to close or open with the stationary contact group 7 in the X-axis direction to correspondingly turn on or off the electrical connection between the two stationary contacts 19. As shown in fig. 20, the movable contact group 72 includes two movable contacts 85. The two movable contacts 85 are arranged along the Z-axis direction. Each movable contact 85 is provided with an overcurrent bridge 86 and two movable contacts 87. The bridge 86 extends in the Y-axis direction. Two movable contacts 87 are arranged along the Y-axis direction and fixedly connected to the overcurrent bridge 86, and each movable contact 87 faces forward along the X-axis direction and is arranged opposite to the corresponding stationary contact 20. Specifically, the movable contact 87 opposed to the first stationary contact 25 in the X-axis direction is a first movable contact 88; the movable contact 87 opposed to the second stationary contact 33 in the X-axis direction is a second movable contact 89. When the movable contact group 72 and the stationary contact group 7 are closed, each first movable contact 88 abuts against the corresponding first stationary contact 25 along the X-axis direction, each second movable contact 89 abuts against the corresponding second stationary contact 33 along the X-axis direction, and the first stationary contact 22 and the second stationary contact 23 are conducted through the two movable contacts 85. When the movable contact group 72 is disconnected from the stationary contact group 7, each first movable contact 88 is away from the corresponding first stationary contact 25 in the X-axis direction, each second movable contact 89 is away from the corresponding second stationary contact 33 in the X-axis direction, and the first stationary contact 22 and the second stationary contact 23 are turned off.

The movable magnetizer group 73 is fixed relative to the movable contact group 72 and is disposed opposite to the static magnetizer 8 in the X-axis direction. As shown in fig. 20, the movable magnetizer group 73 includes a movable magnetizer 90, and the movable magnetizer 90 is provided corresponding to the movable contact 85. In this embodiment, the number of the movable magnetizers 90 is two, and the two movable magnetizers 90 are arranged along the Z-axis direction. Each moving magnetic conductor 90 is provided with a magnetic conductive body 91 and two extensions 92. The magnetic conductive body 91 extends along the Z-axis direction and is fixedly connected to the back surface of the overcurrent bridge 86, where "back surface" refers to the surface facing away from the stationary contact set 7. The extension 92 extends forward in the X-axis direction from both ends of the magnetic conductive body 91 in the Z-axis direction.

The elastic support set 74 is mounted on the pushing member 70 and located between the pushing member 70 and the movable contact set 72 along the X-axis direction. As shown in fig. 20, the elastic supports 93 are included, and in this embodiment, the elastic supports 93 are two in number and are arranged along the Z-axis direction. The elastic bracket 93 is provided with a bracket body 94 and a first elastic portion 95. The frame body 94 is fixed with respect to the pushing member 70, and specifically, the frame body 94 is provided with two first coupling holes 96 corresponding to the coupling posts 82, and the coupling posts 82 pass through the first coupling holes 96 so that the frame body 94 is positioned with respect to the pushing member 70 in any direction perpendicular to the X-axis direction. The first elastic portion 95 is adapted to be elastically deformed in the X-axis direction. The first elastic portion 95 is disposed corresponding to the movable contact 85, and the movable contact 85 is fixedly connected to the corresponding first elastic portion 95. In this embodiment, each first elastic portion 95 includes two first elastic arms 97, one end of each first elastic arm 97 is connected to the frame 94 integrally, and the other end is fixedly connected to the overcurrent bridge 86. The first elastic arm 97 is fixedly connected with the overcurrent bridge 86 at a position on the back of the corresponding movable contact 87.

The elastic member 75 is adapted to abut against the accommodating member 6, and the elastic member 75 deforms and stores energy when the pushing member 70 moves in the opening direction X2, and recovers the deformation and releases energy when the pushing member 70 moves in the closing direction X1. As shown in fig. 20, the elastic member 75 is provided with a main body 98 and a second elastic portion 99. The main body 98 is in the form of a sheet perpendicular to the X-axis direction and is fixed with respect to the pusher 70. Specifically, the main body 98 is provided with two second coupling holes 100 corresponding to the coupling posts 82, and the coupling posts 82 pass through the second coupling holes 100 so that the main body 98 is positioned with respect to the pushing member 70 in any direction perpendicular to the X-axis direction. The main body 98 is located between the frame body 94 and the first insert portion 78 in the X-axis direction. The second elastic portion 99 is adapted to be elastically deformed in the X-axis direction. The second elastic portion 99 is disposed corresponding to the movable contact 85 in the movable contact group 72. The second elastic portion 99 includes two second elastic arms 101, one ends of the two second elastic arms 101 are integrally connected to the main body 98, and the other ends extend to both sides in the Y-axis direction and are adapted to abut against the corresponding abutment surfaces 18.

Referring to fig. 21 and 22, fig. 21 and 22 show the stopper 76 in the present embodiment. The limiting member 76 is fixed relative to the pushing member 70 and abuts against the movable contact group 72 rearward when the movable contact group 72 is disconnected from the stationary contact group 7, so as to limit the distance between the movable contact group 72 and the stationary contact group 7. As shown in fig. 21 and 22, the stopper 76 is provided with a stopper body 102 and two first guide portions 103. The material of the limiting body 102 is metal. The limiting body 102 is provided with a limiting portion 104 and two connecting portions 105. The limiting portion 104 is adapted to abut against each movable contact 85 in the movable contact group 72. The limiting portion 104 extends along the Z-axis direction and is provided with three avoidance holes 106, and the avoidance holes 106 are used for extending the extending portions 92 of the moving magnetizers 90 forward along the X-axis direction. The two connecting portions 105 extend backward from both ends of the limiting portion 104 in the Z-axis direction, respectively, and the connecting portions 105 are provided with fitting holes 107 which are fitted and fixedly connected with the connecting ends 84, and bending portions 108 for mounting the first guide portions 103. The bending portion 108 extends in the Z-axis direction from the front end of the connecting portion 105 in the closing direction X1. The extending directions of the bent portions 108 of the two connecting portions 105 are away from each other. The two first guide portions 103 are disposed in the Z-axis direction and are located at the ends of the two bent portions 108 in the Z-axis direction so as to be away from each other. The first guide 103 is made of plastic. The two first guide parts 103 and the limiting body 102 are integrally formed through insert injection molding, and the first guide parts 103 wrap the corresponding bending parts 108. In this embodiment, the first guide portion 103 is located at the front end of the stopper 76 in the closing direction X1 in the X-axis direction and is located at the middle of the stopper 76 in the Y-axis direction. In this embodiment, the first guide 103 and the second guide 78 are both guide 109. The guide 109 is used to guide the movement of the movable contact portion 4 in the X-axis direction.

Referring to fig. 1, fig. 1 shows a micro switch 5 in the present embodiment. As shown in fig. 1, in the present embodiment, the micro switch 5 includes a movable spring 83 and two stationary contact terminals 110. The static contact terminal 110 extends along the Z-axis direction and protrudes out of the accommodating member 6. The two stationary contact terminals 110 are arranged in the Y-axis direction and located between the moving spring 83 and the coil winding 41 in the X-axis direction. The two static contact terminals 110 are used for being electrically connected with a relay state sensing circuit. The movable spring 83 is fixedly connected with the pushing member 70. In this embodiment, the movable spring 83 is insert-molded integrally with the pushing member 70 and is located in the second insert portion 81. The movable spring 83 is provided with two abutting arms extending away from each other in the Y-axis direction. The movable spring 83 is driven by the pushing member 70 to move along the X-axis direction, so that the abutting arm abuts against or is away from the two static contact terminals 110, and in other embodiments, when the movable spring 83 is not fixedly connected with the pushing member 70, the movable spring 83 can be further away from the two static contact terminals based on its elastic restoring force.

Referring to fig. 23 and 26, fig. 23 and 26 show the internal structure of the relay 1 of the present embodiment.

As shown in fig. 23, in the present embodiment, the magnetic circuit portion 3 and the movable contact portion 4 are installed in the cavity 12. The two static contact pieces 19 of the static contact piece group 7 are fixedly connected to the accommodating piece 6, so that the static contact points 20 of the two static contact pieces 19 are distributed along the Y-axis direction, and the connecting terminals 21 of the two static contact pieces 19 are distributed along the X-axis direction and extend out of the accommodating piece 6 along the Y-axis direction. The second connection terminal 35 of the second stationary contact 23 is located between each stationary contact 20 and the coil winding 41 in the X-axis direction. The eighth flow-through portion 34 is located outside the movable contact group 72 in the Y-axis direction and also outside the barrier 9 on the right side. The static magnetizer 8 is inserted in the static magnetizer groove 16 and fixedly connected with the accommodating piece 6. The first stationary contact 25 and the second stationary contact 33 are located on both sides of the stationary magnetizer 8 in the Y-axis direction, respectively. The projections of all the portions of the stationary contact 20 adapted to be in contact with the movable contact group 72 on the second projection plane perpendicular to the Y-axis direction are located within the projections of the stationary magnetic conductor 8 on the second projection plane and the surface of the stationary magnetic conductor 8 facing the movable magnetic conductor group 73 is closer to the movable magnetic conductor group 73 than all the stationary contact 20 is in the X-axis direction. The second surface S2 is closer to the moving magnetic conductor set 73 than the first surface S1. The static magnetizer 8 and the movable magnetizer group 73 are arranged opposite to each other along the X-axis direction. The static magnetizer 8 is located between the third overcurrent section 27 and the movable magnetizer group 73 in the X-axis direction. In other embodiments, the static magnetic conductor 8 may be fixed relative to the stop 76, and may serve the same purpose. The two blocking pieces 9 are respectively inserted into the corresponding blocking piece grooves 17 and fixedly connected with the accommodating piece 6, so that the two blocking pieces 9 are positioned at the outer side of the static contact piece group 7 along the Y-axis direction. The first magnetic drive end 48 is located between the first engaging portion 61 and the fourth engaging portion 64 in the X-axis direction. The second magnetic drive end 49 is located between the third engaging portion 63 and the second engaging portion 62 in the X-axis direction. Each first movable contact 88 is disposed opposite to the corresponding first stationary contact 25 in the X-axis direction, and each second movable contact 89 is disposed corresponding to the corresponding second stationary contact 33 in the X-axis direction. The limiting member 76 is fixedly connected with the connecting member 71 to be relatively fixed with the pushing member 70. The stop 76 is adapted to abut the trigger contact set 72 in the opening direction X2. The elastic member 75 is adapted to abut the receiving member 6. The first guide portion 103 and the second guide portion 78 are each centered between the first movable contact 88 and the second movable contact 89 in the Y-axis direction.

As shown in fig. 26, the housing 10 is fixedly connected with the cover 11 to form the accommodating member 6. A shield 39 is placed in the receptacle 6. The first guide 103 located at the upper part in the Z-axis direction extends into the first groove section 14 of the slide groove 13 of the cover 11 in the Z-axis direction. The second guide 78 located at the upper part in the Z-axis direction extends into the second groove section 15 of the slide groove 13 of the cover 11 in the Z-axis direction. The first guide 103 located at the lower part in the Z-axis direction extends into the first groove section 14 of the slide groove 13 of the housing 10 in the Z-axis direction. The second guide 78 located at the lower part in the Z-axis direction extends into the second groove section 15 of the slide groove 13 of the housing 10 in the Z-axis direction. Thus, each guide portion 109 extends into the corresponding chute 13 along the Z-axis direction and is slidably engaged with the chute 13 along the X-axis direction. In this embodiment, the guiding portion 109 is disposed on the movable contact portion 4, and the chute 13 is disposed on the accommodating member 13. In other embodiments, the guide portion 109 may be disposed on the accommodating element 6, and the chute 13 may be disposed on the movable contact portion 4.

Referring to fig. 23, fig. 23 shows the state of the relay 1 with the armature assembly 38 in the first position. As shown in fig. 23, when the armature assembly 38 is in the first position, the movable contact group 72 is disconnected from the stationary contact group 7 in the disconnection direction X2, the relay 1 is in the off state, and the external circuit is turned off. At this time, the elastic member 75 abuts against the abutment surface 18 along the breaking direction X2, so that the elastic member 75 deforms to store energy. The limiting member 76 abuts against the movable contact group 72 in the breaking direction X2, and each movable contact 85 presses against the elastic support group 74, and fixes the frame body 94 of the elastic support 93 and the main body 98 of the elastic member 75 relative to the pushing member 70 in the X-axis direction, thereby fixing the frame body 94 and the elastic member 75 relative to the pushing member 70. The movable spring 83 abuts against the two static contact terminals 110, and the relay state sensing circuit senses that the relay 1 is in an off state.

When the coil winding 41 receives the first pulse electric signal, the coil assembly 37 drives the armature assembly 38 to move along the closing direction X1, and the armature assembly 38 drives the movable contact portion 4 to move along the closing direction X1, and in this process, the guide portion 109 slides in the chute 13 along the closing direction X1 and guides the movable contact portion 4. The elastic member 75 resumes the deformation release energy. When the movable contact 87 abuts against the corresponding stationary contact 20, the pushing member 70 enters an over-stroke, and at this time, the elastic support group 74 deforms and stores energy until the armature assembly 38 reaches the second position, and the movable contact group 72 is closed with the stationary contact group 7.

Referring to fig. 24 and 26, fig. 24 and 26 illustrate the state of the relay 1 with the armature assembly 38 in the second position. As shown in fig. 24, when the armature assembly 38 is in the second position, the movable contact group 72 and the stationary contact group 7 are closed in the closing direction X1, the relay 1 is in the conductive state, and the external circuit is conducted. The third flow-through portion 27 of the first stationary contact 22 forms a reverse flow portion, and the flow-through direction of the reverse flow portion is opposite to the flow-through direction of the flow-through bridge 86. The eighth flow-through portion 34 of the second stationary contact 23 forms a flow-through portion, and the flow-through direction of the flow-through portion is the opening direction X2 when the flow-through direction of the flow-through bridge 86 is rightward along the Y-axis direction and the flow-through portion is located on the right side of the flow-through bridge 86. The magnetic field formed by the current passing through the current-crossing portion acts on the current-passing bridge 86, so that the current-passing bridge 86 receives the first magnetic force F1 toward the stationary contact group 7. The elastic support group 74 deforms along the X-axis direction to store energy. The elastic member 75 is away from the abutment surface 18 in the X-axis direction. The moving spring 83 is far away from the two static contact terminals 110, and the relay state sensing circuit senses that the relay 1 is in a conducting state. As shown in fig. 26, the current passing through the overcurrent bridge 86 forms an anti-short magnetic circuit M1 between the moving magnetizer 90 and the static magnetizer 8. In the present embodiment, the number of the short-circuit-resistant magnetic circuits M1 is two. Meanwhile, the magnetic induction line formed on one side of the static magnetic conductor 8 by the reverse magnetic field M2 formed by the current passing through the reverse flow portion formed by the third current passing portion 27 is the same as the magnetic induction line formed on one side of the static magnetic conductor 8 by the short-circuit-resistant magnetic circuit M1.

When the coil winding 41 receives the second pulse electric signal, the coil assembly 37 drives the armature assembly 38 to move along the breaking direction X2, and the armature assembly 38 drives the movable contact portion 4 to move along the breaking direction X2, and in this process, the guide portion 109 slides in the chute 13 along the breaking direction X2 and guides the movable contact portion 4. The elastic support group 74 resumes the deformation release energy. The elastic member 75 deforms to store energy after abutting against the abutment surface 18. Until reverting to the state shown in fig. 23 with the armature assembly 38 in the first position.

The electric meter (not shown in the drawings) in the present embodiment uses the relay 1 described above.

In this embodiment, the stationary contacts 20 of the two stationary contacts 19 are arranged along the Y-axis direction, and the movable contact group 72 is closed or opened with the stationary contact group 7 along the X-axis direction to correspondingly turn on or off the electrical connection between the two stationary contacts 19. With this structure, the safety distance between the movable contact group 72 and the static contact group 7 is twice the actual distance between the movable contact 87 and the corresponding static contact 20 along the X-axis direction, so the relay 1 has higher safety and higher load capacity, and is more beneficial to improving the safety distance between the movable contact group 72 and the static contact group 7.

In this embodiment, the stationary contacts 20 of the two stationary contacts 19 are arranged along the Y-axis direction, and the connection terminals 21 of the two stationary contacts 19 are arranged along the X-axis direction and extend out of the accommodating member 6 along the Y-axis direction, so that the size of the stationary contacts 19 in the X-axis direction is shortened and the space in the Y-axis direction is effectively utilized as compared with the case where the stationary contacts 19 extend out of the accommodating member 6 along the moving direction of the movable contact group 72. Therefore, the size of the relay 1 in the X-axis direction and the size in the Y-axis direction are well balanced, and a more advantageous condition can be created for increasing the safety distance between the movable contact group 72 and the stationary contact group 7 in a limited space.

In the present embodiment, on the basis of the coil assembly of the hold swing type magnetic latching relay, the two armatures 51 fixedly connected with the permanent magnet piece 50 are improved from parallel arrangement to cross each other in the armature assembly 38, so that the armature assembly 38 can swing from the opposite coil assembly 37 to move linearly relative to the coil assembly 37. There is no loss of radial component of the swing travel of the swing type magnetic latching relay due to the linear motion of the armature assembly 38 relative to the coil assembly 37. The space utilization of the relay 1 can be made higher, and more advantageous conditions can be created for increasing the safety distance between the movable contact group 72 and the stationary contact group 7 in a limited space.

In this embodiment, since the axis of the coil winding 41 extends along the Y-axis direction and the two magnetic driving ends 45 are arranged along the Y-axis direction, and the linear motion direction of the armature assembly 38 is the X-axis direction perpendicular to the Y-axis direction, the layout is beneficial to make room for the motion of the armature assembly 38 and the movable contact set 72 along the X-axis, and at this time, the dimension of the accommodating member 6 along the Y-axis direction is mainly determined by the length of the coil assembly 37 along the Y-axis direction, so that a long length of the relay 1 is not required in one direction (whether the X-axis direction or the Y-axis direction), so that the relay 1 can more easily adapt to the limited space, and a more beneficial condition can be created for increasing the safety distance between the movable contact set 72 and the stationary contact set 7 in the limited space.

In this embodiment, no push rod or moving iron core is needed to be placed in the coil winding 41, so that the diameter of the supporting shaft of the coil former 40 is smaller, the inner diameter of the coil winding 41 is smaller, and compared with the direct-acting magnetic latching relay in the prior art, when the space occupation of the coil assembly 37 is the same, the magnetic driving force generated by the coil winding 41 is stronger, the pushing force to the armature assembly 38 is larger, and a more favorable condition can be created for increasing the safety distance between the moving contact set 72 and the static contact set 7 in a limited space.

In this embodiment, the first portion of the magnetic circuit without any air gap can be formed between the two engaging portions 60 of the armature assembly 38 by the permanent magnet 50 and the two armatures 51, and the second portion of the magnetic circuit can be formed between the two magnetic driving ends 45 of the coil assembly 37 throughout the coil assembly 37. In the magnetic holding state, the attraction part 60 attracts the corresponding magnetic driving end 45 along the X-axis direction, so that the first part and the second part can form a complete magnetic loop without an air gap, the magnetic loss is smaller, the magnetic efficiency is higher, and the movement stroke of the movable contact element group 72 is favorably increased under the condition that the power consumption of the coil assembly 37 is not increased; in the case where the magnetic driving force is equivalent, the power consumption required for the coil block 37 to realize the magnetic driving can be reduced, which is advantageous in that the size of the coil block 37 can be made smaller. It is thus possible to create more advantageous conditions for increasing the safety distance between the movable contact set 72 and the stationary contact set 7 in a limited space.

In this embodiment, since the second portion of the magnetic circuit passes through the entire coil assembly 37, the magnetic force during magnetic latching is greater than that of the prior art direct-acting magnetic latching relay, and particularly when the relay 1 is impacted by a large fault current, the armature assembly 38 is less likely to move out of the latching state, which is advantageous in avoiding destructive arcing due to the moving contact set 72 being disengaged from the stationary contact set 7 by the large fault current.

In this embodiment, when the coil assembly 37 is excited by the pulse electric signal to reverse the polarity temporarily formed by the two magnetic driving ends 45 in the first position of the armature assembly 38, not only the two magnetic driving ends 45 generate magnetic repulsive force to the first engaging portion 61 and the third engaging portion 63, but also the first portion of the push magnetic circuit without air gap is formed between the fourth engaging portion 64 and the second engaging portion 62 by the armature assembly 38, the two magnetic driving ends 45 form the second portion of the push magnetic circuit penetrating the whole coil assembly 37 by the coil assembly 37, the first portion and the second portion of the push magnetic circuit form a complete push magnetic circuit, only the necessary travel air gap is not needed in the push magnetic circuit, and other air gaps are not needed in the push magnetic circuit, so the magnetic efficiency is higher, the magnetic driving force acting on the armature assembly 38 by the two magnetic driving ends 45 under the same power consumption is stronger, and the safety distance between the movable contact set 72 and the static contact set 7 is more favorable. Likewise, the same technical effect is achieved when the coil assembly 37 is energized by the pulsed electrical signal to reverse the polarity temporarily established by the two magnetic drive ends 45 with the armature assembly 38 in the magnetically held state in the second position.

In this embodiment, since the first engaging portion 61 and the fourth engaging portion 64 are disposed along the X-axis direction, the third engaging portion 63 and the second engaging portion 62 are disposed along the X-axis direction, the first engaging portion 61 and the third engaging portion 63 are disposed along the Y-axis direction, and the fourth engaging portion 64 and the second engaging portion 62 are disposed along the Y-axis direction, the four engaging portions 60 of the armature assembly 38 are respectively located at the four top positions of the rectangle on the first projection surface, which is convenient for adjusting the dimensions of the armature assembly 38 along the X-axis direction and the Y-axis direction, and creates a more advantageous condition for increasing the safe distance between the movable contact group 72 and the stationary contact group 7 in a limited space.

In the present embodiment, the permanent magnet members 50 are respectively disposed on two sides of the intersecting portion 59 along the Y axis, and the two magnetic poles 54 of the permanent magnet members 50 are disposed along the X axis, so that the space occupied by the armature assembly 38 is fully utilized to increase the magnetic force between the magnetic driving end 45 and the armature assembly 38 without increasing the dimensions of the armature assembly 38 along the X axis and the Z axis, which is more beneficial to increasing the safety distance between the movable contact set 72 and the stationary contact set 7. Because each permanent magnet piece 50 is connected together through the two armatures 51, the difference of intensity on the magnetic field of each permanent magnet piece 50 is effectively weakened on the two armatures 51, and the magnetic pushing force between the attraction part 60 at two sides and the magnetic driving end 45 can be kept balanced along the X axis direction, so that the relay 1 is less prone to being blocked and has longer service life.

In this embodiment, the projection of the armature assembly 38 on the first projection plane is mirror symmetrical along the symmetry plane perpendicular to the Y axis, so that the consistency of the magnetic field intensity of the armature assembly 38 along the two sides of the Y axis direction is better, the center of gravity is easier to keep on the symmetry plane, the linear motion of the armature assembly 38 is less prone to skew, the relay 1 is less prone to jamming and longer in service life, the magnetic driving force is less prone to waste on useless work, and more favorable conditions can be created for increasing the safety distance between the movable contact set 72 and the static contact set 7 in a limited space.

In this embodiment, the two movable contacts 87 of the movable contact 85 are arranged along the Y-axis direction and fixedly connected to the overcurrent bridge 86 extending along the Y-axis direction, so that the current passing through the overcurrent bridge 86 flows along the Y-axis direction, a magnetic circuit for resisting short circuit is formed conveniently, the magnetic circuit for resisting short circuit is used for enabling the movable contact group 72 to be closed with the static contact group 7 more reliably, and when the relay 1 bears a large fault current, the movable contact group 72 is prevented from being separated from the static contact group 7, so that the relay 1 is prevented from being damaged by destructive arc pulling.

In this embodiment, the number of the movable contacts 85 in the movable contact group 72 is more than two, and each movable contact 85 is arranged along the Z-axis direction, so when the movable contact group 72 and the stationary contact group 7 are closed, each movable contact 85 is connected in parallel, which can increase the load capacity of the relay 1 and reduce the contact resistance between the movable contact 87 and the stationary contact 20. Meanwhile, by combining the technical means that the overcurrent bridge 86 extends along the Y-axis direction and the technical means that the movable contact 85 moves along the X-axis direction, the relay 1 can more fully utilize the space in all directions, the structure is more compact, and more favorable conditions are created for increasing the safety distance between the movable contact group 72 and the static contact group 7 in the limited space.

In this embodiment, the connection terminal 21 of at least one static contact 19 is located between the static contact 20 and the coil winding 41 along the X-axis direction, so that the distance between the two connection terminals 21 along the X-axis direction is increased, the two static contacts 19 are less prone to short circuit, and the requirement for installing an external transformer can be met.

In the present embodiment, the eighth overcurrent portion 34 of the second stationary contact 23 forms a cross-flow portion that is located outside the movable contact group 72 in the Y-axis direction and is connected to the connection terminal 21 in the disconnection direction. The magnetic field generated by the current of the current crossing part acts on the overcurrent bridge 86 with the overcurrent direction being the Y-axis direction, and generates a magnetic acting force towards the static contact group 7 on the overcurrent bridge 86, and the magnetic acting force enables the movable contact group 72 to be more reliably closed with the static contact group 7.

In this embodiment, the movable magnetizer group 73 and the static magnetizer 8 form the short-circuit-resistant magnetic circuit M1 when the overcurrent bridge 86 is overcurrent along the Y-axis direction, so that the movable magnetizer group 73 and the movable contact group 72 are subjected to magnetic force along the closing direction, and the movable contact group 72 can be more reliably closed with the static contact group 7. Since this magnetic force increases with an increase in current, it is advantageous to avoid the movable contact group 72 from being detached from the stationary contact group 7 when the relay 1 is subjected to a large fault current, thereby avoiding damage to the relay 1 caused by destructive arcing.

In the present embodiment, the movable magnetizer 90 is disposed corresponding to the movable contacts 85, so that a short-circuit-resistant magnetic circuit M1 can be formed around each movable contact 85, and each movable contact 85 is not easily separated from the stationary contact group 7. The magnetic conductive body 91 is fixedly connected to the back of the overcurrent bridge 86, so that most of the magnetic field generated by the current of the overcurrent bridge 86 is restrained in the short-circuit-resistant magnetic circuit, and the magnetic efficiency is improved. The extension portion 92 extends from the magnetic conductive body 91 along the closing direction, so when the movable contact set 72 and the static contact set 7 are closed, the air gap between the movable magnetic conductive body 90 and the static magnetic conductive body 8 is smaller, the magnetic resistance of the short-circuit resistant magnetic circuit M1 is smaller, and the movable contact set 72 is less likely to be separated from the static contact set 7. Therefore, the movable contact group 72 can be more reliably closed with the static contact group 7, and when the relay 1 bears a fault high current, the movable contact group 72 is prevented from being separated from the static contact group 7, so that the relay 1 is prevented from being damaged due to destructive arc pulling.

In this embodiment, the static magnetizer 8 is fixedly connected to the accommodating member 6, so that the static magnetizer 8 is easier to install.

In this embodiment, the stationary contacts 20 of the two stationary contacts 19 are located at two sides of the stationary magnetizer 8 along the Y-axis direction, so that the magnetic force of the short-circuit-resistant magnetic circuit M1 formed by the stationary magnetizer 8 and the movable magnetizer group 73 to the movable contact group 72 is balanced along the Y-axis direction, and the two movable contacts 87 are not easy to disengage from the corresponding stationary contacts 20.

In this embodiment, the flowing direction of the reverse flow portion is opposite to the flowing direction of the flowing bridge 86, and the static magnetizer 8 is located between the reverse flow portion and the moving magnetizer group 73 along the X-axis direction, so that the magnetic induction line direction of the magnetic field generated by the reverse flow portion on the side of the static magnetizer 8 is the same as the magnetic induction line direction formed by the anti-short circuit magnetic circuit M1 on the side of the static magnetizer 8, the magnetic field strength of the static magnetizer 8 is enhanced, the magnetic acting force formed between the static magnetizer 8 and the moving magnetizer group 73 is stronger, and when the relay 1 bears a large fault current, the moving contact group 72 is less likely to be separated from the static contact group 7, thereby avoiding damage to the relay 1 caused by destructive arc pulling.

In this embodiment, the second surface S2 is closer to the moving magnetizer group 73 than the first surface S1 along the X-axis direction, so that the static magnetizer 8 is not embedded between the parts of the two static contacts 19 except the static contact 20 along the Y-axis direction, the creepage distance between the static contacts 19 and the static magnetizer 8 is increased, and the withstand voltage capability of the relay 1 is improved. At the same time, the distance between the two stationary contacts 20 along the Y-axis direction is also reduced, the size of the accommodating member 6 along the Y-axis direction is reduced, and more favorable conditions can be created for increasing the safety distance between the movable contact group 72 and the stationary contact group 7 in a limited space.

In this embodiment, the projections of the parts of the stationary contacts 20, which are suitable for contacting the movable contact group 72, on the second projection plane perpendicular to the Y-axis direction are located in the projections of the stationary magnetizers 8 on the second projection plane, and the surfaces of the stationary magnetizers 8 facing the movable magnetizer group 73 are closer to the movable magnetizer group 73 than the surfaces of the stationary contacts 20 along the X-axis direction. Therefore, when the movable contact element group 72 breaks and draws an arc from the fixed contact element group 7, the magnetic fields generated by the arcs at the two sides are concentrated on the static magnetizer 8, so that the arc is not easy to spread to the two sides along the Y-axis direction, the ablation of the peripheral accommodating element 6 caused by the escape of the arc between the movable contact point 87 and the fixed contact point 20 can be reduced, the service life of the relay 1 is ensured, on the basis, the distance between the two fixed contact points 20 along the Y-axis direction can be designed to be closer, the size of the accommodating element 6 along the Y-axis direction is favorably reduced, and more favorable conditions can be created for increasing the safe distance between the movable contact element group 72 and the fixed contact element group 7 in a limited space.

In this embodiment, two blocking members 9 are fixedly connected to the accommodating member 6 and located outside the stationary contact set 7 along the Y-axis direction, and each blocking member 9 extends along the X-axis direction, so that the projection of the portion of each stationary contact 20 suitable for contacting with the movable contact 87 on the second projection plane perpendicular to the Y-axis direction is located in the projection of each blocking member 9 on the second projection plane. Therefore, when the movable contact group 72 breaks the arc from the stationary contact group 7, the arc is not conducted to both side walls of the accommodating member 6 in the Y-axis direction, and the insulating performance of the accommodating member 6 is ensured. The barrier 9 is made of high-temperature resistant insulating materials, so that when the load is large and the electric arc is pulled to generate large heat, the barrier 9 is prevented from being damaged by the heat of the electric arc, the barrier 9 is prevented from being damaged, and the load capacity of the relay 1 is improved.

In this embodiment, the elastic support group 74 is disposed between the pushing member 70 and the movable contact group 72, and is capable of providing an elastic force to the movable contact group 72 along the closing direction X1 after the pushing member 70 undergoes an over-stroke, so that the movable contact group 72 can be more reliably closed with the static contact group 7, and the movable contact group 72 is less likely to be separated from the static contact group 7 when the relay 1 receives a large fault current, thereby avoiding damage to the relay 1 caused by destructive arc pulling. The elastic support group 74 can also generate an additional repulsive force when the movable contact group 72 is disconnected from the stationary contact group 7, helping the movable contact 85 to be disconnected from the stationary contact group 7.

In this embodiment, by providing the limiting member 76, it can be ensured that the distance between the movable contact set 72 and the static contact set 7 meets the design requirement when the movable contact set 72 and the static contact set 7 are disconnected.

In this embodiment, the armature assembly 38 and the pushing member 70 are integrally injection molded, so that errors possibly generated in the assembly process of the armature assembly 38 and the pushing member 70 are avoided, the integration level of the pushing member 70 and the armature assembly 38 is higher, parts are fewer, and limited space is fully utilized.

In this embodiment, the connecting piece 71 and the pushing piece 70 are molded integrally by insert molding, so that the limiting piece 76 is easier to fix relative to the pushing piece 70, the limiting piece 76 has stronger rigidity, the limiting effect on the movable contact group 72 is better, and the size of the relay 1 along the Y-axis direction can be saved; the two ends of the connecting piece 71 along the Z axis extend out of the pushing piece 70 respectively to form a connecting end 84 fixedly connected with the limiting piece 76, so that the size of the relay 1 along the Z axis can be saved, and more favorable conditions can be created for increasing the safety distance between the movable contact piece group 72 and the static contact piece group 7 in a limited space.

In the present embodiment, the first elastic portions 95 are disposed corresponding to the movable contacts 85, and each movable contact 85 is fixedly connected to the corresponding first elastic portion 95, so that each movable contact 85 can be adjusted by the relatively independent first elastic portion 95, which is more beneficial for the two movable contacts 87 of the movable contact 85 to be reliably closed with the corresponding stationary contacts 20.

In this embodiment, the first elastic portion 95 includes two first elastic arms 97 fixedly connected to the overcurrent bridge 86, so that the movable contact 85 can swing freely to adjust the posture. The fixed connection positions of the two first elastic arms 97 and the overcurrent bridge 86 are respectively located on the back surfaces of the corresponding movable contacts 87, so that the elastic force of the two first elastic arms 97 can directly act on the two movable contacts 87, and the two movable contacts 87 can be reliably closed with the corresponding stationary contacts 20.

In the present embodiment, the elastic member 75 stores energy due to deformation when the pushing member 70 moves along the opening direction X2 and releases energy due to recovery of deformation when the pushing member 70 moves along the closing direction X1, so that the movable contact set 72 can be better assisted to start from the opening position and approach the static contact set 7, which is beneficial to increasing the movement stroke of the movable contact set 72, and thus is beneficial to increasing the safety distance between the movable contact set 72 and the static contact set 7.

In this embodiment, the main body 98 of the elastic member 75 is in a sheet shape and is fixed relative to the pushing member 70, and the second elastic arms 101 extend to two sides in the Y-axis direction and are adapted to abut against the accommodating member 6, so that the space occupied by the elastic member 75 in the X-axis direction is smaller and the elastic deformation capability is good, and the compression length of the spring is prevented from increasing the size of the movable contact portion 4 in the X-axis direction when the spring is used as the elastic member 75, thereby facilitating the size reduction of the relay 1 in the X-axis direction, and thus creating more favorable conditions for increasing the safety distance between the movable contact group 72 and the stationary contact group 7 in a limited space.

In this embodiment, the guiding portion 109 is disposed in the Y-axis direction, compared with the guiding portion 109 disposed on two sides along the Y-axis direction, the space along the Y-axis direction can be saved, the increase of the size of the relay 1 along the Y-axis direction can be avoided, and meanwhile, the phenomenon that the moving contact portion 4 is jammed during movement due to the non-parallelism of the guiding portion 109 on two sides along the Y-axis direction can be avoided, so that the magnetic driving force of the magnetic circuit portion 3 is not wasted in useless work, and a more advantageous condition can be created for increasing the safety distance between the moving contact group 72 and the static contact group 7 in a limited space.

In this embodiment, since the limiting member 76 directly abuts against the movable contact group 72 before the pushing member 70 moves in the closing direction X1 and enters the overtravel, and the movable contact 87 abuts against the corresponding stationary contact 20 when entering the overtravel, the first guiding portion 103 is disposed on the limiting member 76, so that the movable contact 85 can be better guided to move in the X-axis direction, the movable contact 87 correctly abuts against the stationary contact 20 in the X-axis direction, the contact resistance between the movable contact 87 and the stationary contact 20 is reduced, and the duration of the arc pulling when the movable contact 87 breaks the stationary contact 20 is also shortened, which is beneficial to increasing the service lives of the movable contact 72 and the stationary contact 20. This is because, if the guide portion 109 is slidably engaged with the chute 13 in the X-axis direction, a fit gap is necessarily formed therebetween, and if the guide portion 109 is distant from the movable contact 72 in the X-axis direction, the fit gap will be enlarged in the movement of the movable contact 72, so that the movable contact 87 cannot properly abut against the stationary contact 20 in the X-axis direction, and the contact resistance between the movable contact 87 and the stationary contact 20 will be increased, and the time for pulling an arc when the movable contact 87 is disconnected from the stationary contact 20 will be longer, which is detrimental to the life of the movable contact 87 and the stationary contact 20.

In the present embodiment, the first guiding portion 103 is disposed on the limiting member 76, which means that the chute 13 is disposed on the accommodating member 6. Because the static contact element group 7 is fixedly connected to the accommodating element 6, the sliding groove 13 is arranged on the accommodating element 6, which is beneficial to ensuring that the extending direction of the sliding groove 13 is perpendicular to the arrangement direction of the static contacts 20 of the two static contact elements 19, so that the guiding of the sliding groove 13 to the guiding part 109 along the X-axis direction is more accurate.

In this embodiment, the first guiding portion 103 is located at the front portion of the limiting body 102 along the closing direction, so that the first guiding portion 103 is closer to the moving contact 87 along the X-axis direction, which is more beneficial to the moving contact 87 to correctly abut against the stationary contact 20 along the X-axis direction, reduces the contact resistance between the moving contact 87 and the stationary contact 20, shortens the duration of arc pulling when the moving contact 87 and the stationary contact 20 are disconnected, and is beneficial to increasing the service lives of the moving contact 87 and the stationary contact 20.

In this embodiment, the projection of the first guiding portion 103 on the first projection plane is circular, which is favorable for avoiding the jamming of the sliding fit of the first guiding portion 103 and the chute 13.

In this embodiment, the material of the first guiding portion 103 is plastic, which is favorable for avoiding scraping the plastic accommodating member 6 when the first guiding portion 103 is made of metal, so that the contact resistance between the movable contact 87 and the stationary contact 20 can be prevented from being affected due to the scraping falling onto the movable contact 87 and the stationary contact 20. The material of the limiting body 102 is metal, so that the rigidity is stronger, and the limiting effect on the movable contact set 72 is better. The first guide part 103 and the limiting body 102 are integrally molded through insert injection, the combination of the first guide part 103 and the limiting body is better, the position of the first guide part 103 along the Y-axis direction is more accurate, and sliding fit with the chute 13 along the X-axis direction is facilitated.

In the present embodiment, the first guide 103 and the second guide 78 cooperate with each other, so that the movable contact portion 4 can be kept moving in the X-axis direction by sliding with the chute 13 in the X-axis direction. The second guiding portion 78 is disposed on the pushing body 77, so that a certain distance exists between the first guiding portion 103 and the second guiding portion 78 along the X-axis direction, which is more beneficial to not enlarging the fit clearance between the guiding portion 109 and the chute 13.

In this embodiment, the armature assembly 38 and the pushing member 70 are integrally molded by insert molding, and the second guiding portion 78 is disposed on the pushing member 70, which is beneficial to guiding the engaging portions 60 along the X-axis direction and the corresponding magnetic driving end 45, avoiding the enlargement of the fit gap between the first guiding portion 103 and the sliding slot 13 at the pushing member 70 when only the first guiding portion 103 is disposed, so that the engaging portion 60 cannot be correctly engaged with the magnetic driving end 45 along the X-axis direction, ensuring that the magnetic circuit is formed between the first portion of the armature assembly 38 and the second portion formed on the coil assembly 37 after the engaging portion 60 engages the magnetic driving end 45, improving the magnetic efficiency, increasing the magnetic driving force, and thus being beneficial to increasing the safety distance between the movable contact set 72 and the static contact set 7.

In this embodiment, the projection of the second guiding portion 78 on the first projection surface is circular, which is beneficial to avoiding the jamming of the sliding fit between the second guiding portion 78 and the chute 13.

In this embodiment, whether or not the first groove section 14 and the second groove section 15 are connected, both are formed on the accommodating member 6, so that the chute 13 can be ensured to extend in the X-axis direction.

In this embodiment, by providing the micro switch 5, the external relay state sensing circuit can be made to know the on-off state of the relay 1. The relay 1 is convenient to manage.

In this embodiment, the static contact terminal 110 is located between the moving spring 83 and the coil winding 41 along the X-axis direction, so that the space reserved between the pushing member 70 and the coil winding 41 can be effectively utilized, the size of the accommodating member 6 along the Y-axis direction is prevented from being increased when the static contact terminal 110 is arranged outside the coil assembly 37 along the Y-axis direction, and a more advantageous condition is created for increasing the safety distance between the moving contact set 72 and the static contact set 7 in a limited space. The movable spring 83 is fixedly connected with the pushing member 70, so that the position and the action of the movable spring 83 are more determined.

In this embodiment, by providing the shield case 39, the magnetic field of the coil assembly 37 is compressed in the iron core 43 and the yoke 44, the magnetic field strength between the two magnetic driving ends 45 is improved, which is advantageous for improving the magnetic efficiency and the driving force of the magnetic circuit portion 3, a more advantageous condition can be created for increasing the safety distance between the movable contact group 72 and the stationary contact group 7 in a limited space, and at the same time, the influence of the external magnetic field on the magnetic circuit portion 3 can be avoided.

The above description and examples are illustrative of the scope of the application and are not to be construed as limiting the scope of the application.

Claims

1. A relay comprises a static contact element group and a movable contact element group, wherein the static contact element group comprises two static contact elements, each static contact element is provided with a static contact point, and the static contact points of the two static contact elements are distributed along the Y-axis direction; the movable contact element group is closed or opened with the static contact element group along the X-axis direction so as to correspondingly switch on or off the electric connection between the two static contact elements;

The magnetic field generator is characterized by also comprising a movable magnetizer group and a static magnetizer; the movable magnetizer group and the movable contact group are relatively fixed and are relatively arranged with the static magnetizer along the X-axis direction; the static magnetizer is fixed relative to one of other parts except the movable contact piece group and the movable magnetizer group, and the static contacts of the two static contact pieces are respectively positioned at two sides of the static magnetizer along the Y-axis direction; the projection of the parts, which are suitable for being contacted with the movable contact piece group, on the second projection plane perpendicular to the Y-axis direction is positioned in the projection of the static magnetizer on the second projection plane, and the surface, which faces the movable magnetizer group, of the static magnetizer is closer to the movable magnetizer group along the X-axis direction than the surfaces of all the static contact points.

2. A relay according to claim 1, further comprising a receiving member, wherein the stationary contact assembly and the stationary magnetic conductor are fixedly connected to the receiving member.

3. A relay according to claim 2, wherein the movable contact group comprises a movable contact, the movable contact comprises an overcurrent bridge and two movable contacts, the overcurrent bridge extends along the Y-axis direction, the two movable contacts are fixedly connected to the overcurrent bridge, and the two movable contacts are arranged along the Y-axis direction and are opposite to the stationary contacts of the two stationary contacts along the X-axis direction.

4. A relay according to claim 3, wherein the movable magnetic conductor assembly comprises a movable magnetic conductor which is arranged corresponding to the movable contact, the movable magnetic conductor is provided with a magnetic conductor body and an extension part, the magnetic conductor body extends along the Z-axis direction and is fixedly connected to the back surface of the overcurrent bridge, and the extension part extends from the magnetic conductor body along the closing direction.

5. A relay according to claim 2, wherein at least one stationary contact is provided with a counter flow portion extending in the Y-axis direction, the counter flow portion having an overcurrent direction opposite to the overcurrent direction of the overcurrent bridge; the static magnetizer is positioned between the reverse flow part and the movable magnetizer group along the X-axis direction.

6. A relay according to claim 2, wherein the stationary contact extends from a first surface of the stationary contact perpendicular to the X-axis, the stationary conductor being provided with a second surface facing away from the movable conductor set and perpendicular to the X-axis, the second surface being closer to the movable conductor set than the first surface in the X-axis direction.

7. A relay according to claim 2, wherein at least one stationary contact is provided with a cross-flow portion extending in the opening direction and outside the movable contact group in the Y-axis direction; when the movable contact element group and the static contact element group are closed, a magnetic field formed by current passing through the cross flow part acts on the overcurrent bridge to apply magnetic acting force to the movable contact element towards the static contact element group.

8. A relay according to claim 2, further comprising two blocking members fixedly connected to the accommodating member and located outside the stationary contact group in the Y-axis direction, each blocking member extending in the X-axis direction so that the projection of the portion of each stationary contact adapted to be in contact with the movable contact on the second projection plane perpendicular to the Y-axis direction is located within the projection of each blocking member on the second projection plane; the blocking piece is made of high-temperature resistant insulating materials.

9. A relay according to claim 2, further comprising a pusher member, an elastic support member, and a stopper member; the pushing piece is used for driving the movable contact piece group to move along the X-axis direction; the elastic support is assembled on the pushing piece and is positioned between the pushing piece and the movable contact piece group along the X-axis direction; the limiting piece is fixed relative to the pushing piece and abuts against the movable contact piece group along the disconnection direction when the movable contact piece group is disconnected from the static contact piece group.

10. An electricity meter comprising a relay according to any one of claims 1 to 9.