A relay

Abstract

This application discloses a relay comprising a fixed portion and a moving contact portion. The fixed portion includes a receiving member and a set of stationary contacts fixedly connected to each other. The moving contact portion is adapted to move relative to the fixed portion along the X-axis and includes the moving contact set, which is closed or opened with the set of stationary contacts along the X-axis. One of the receiving member and the moving contact portion is provided with a groove, and the other is provided with a guide portion. The groove extends along the X-axis, and the guide portion extends into the groove along the Z-axis to slide with the groove along the X-axis. This technical solution provides a better guiding effect compared to existing technologies.

Description

Technical Field

[0001] This application relates to the field of relays, specifically to a type of relay. Background Technology

[0002] Existing relays include a fixed part, a moving contact part, and a magnetic circuit part. The fixed part includes a housing and a set of stationary contacts. In one optional configuration, the set of stationary contacts includes two stationary contacts fixed to the housing and respectively connected to the power supply and load of an external circuit. Each stationary contact has a stationary contact point, and the stationary contacts of the two stationary contacts are arranged along the Y-axis. In this configuration, the moving contact part includes a pusher, a set of moving contacts, a flexible support assembly, and a limiting member. The pusher, typically injection molded from plastic, electrically isolates the magnetic circuit from the moving contact assembly. The pusher moves along the X-axis to close or open the moving contact assembly with the stationary contact assembly along the X-axis. Specifically, the moving contact assembly generally includes at least one moving contact, which has a current-carrying bridge and two moving contacts. The two moving contacts are arranged along the Y-axis and fixed to the current-carrying bridge. The two moving contacts abut against the corresponding stationary contacts in the closing direction and move away from the corresponding stationary contacts in the opening direction. Both the closing and opening directions are along the X-axis and are opposite to each other. An elastic support assembly is installed between the pusher and the moving contact assembly along the X-axis. It stores energy when the moving contact assembly closes with the stationary contact assembly and releases energy when the moving contact assembly disconnects from the stationary contact assembly. A limiting member is fixed relative to the pusher and abuts against the moving contact assembly in the opening direction when the moving contact assembly disconnects from the stationary contact assembly, thus limiting the distance between the moving and stationary contacts. The magnetic circuit drives the pusher to move along the X-axis. The magnetic circuit portion in existing technology can have a magnetic holding function, which can reduce the energy consumption of the relay. Magnetic circuit portions with magnetic holding function include two types: oscillating and direct-acting. The oscillating magnetic circuit portion includes a coil assembly fixed relative to the receiving element and an armature assembly that oscillates relative to the receiving element. The coil assembly generally includes a coil winding, an iron core, and two yokes. The iron core is placed inside the coil winding, and the two yokes are fixed to both ends of the iron core. The ends of the two yokes furthest from the iron core form two magnetic drive ends, which are arranged along a first direction. The armature assembly includes a permanent magnet and two armatures arranged in an I-shape, with the two armatures parallel to each other and clamping the permanent magnet within them. The coil winding is excited by a pulsed electrical signal, reversing the polarity temporarily formed by the two magnetic drive ends, thereby driving the armature assembly to oscillate relative to the receiving element about a rotation axis perpendicular to the first direction. The armature assembly drives a pusher to move along the X-axis direction via a swing arm. The direct-acting magnetic circuit includes a coil winding, a stationary iron core, a yoke plate, a yoke cylinder, a permanent magnet, and an armature. The coil winding, stationary iron core, yoke plate, yoke cylinder, and permanent magnet are fixed to the housing. The armature moves linearly relative to the housing between the yoke plate and the stationary iron core. The armature is generally fixed to a driving component to drive the driving component to move along the X-axis.

[0003] Generally, the surfaces of the parts where the moving and stationary contacts abut each other are roughly part of a sphere or a spherical surface. If the moving and stationary contacts are misaligned along the Y-axis and / or Z-axis, the contacting part may not be at the top of the moving and stationary contacts when they abut. This increases the contact resistance between the moving and stationary contacts, makes the moving contact less quick to break off from the stationary contact, and prolongs the arcing time, which is detrimental to the lifespan of both the moving and stationary contacts. To solve this problem, relays typically include two guide rods on both sides of the moving contact along the Y-axis, with the guide rods extending along the X-axis. One of the moving contact and the receiving element is fixed to the guide rod, while the other slides along the X-axis with the guide rod. However, this guiding structure does not provide ideal guidance. Summary of the Invention

[0004] The purpose of this application is to overcome the aforementioned defects or problems in the prior art and to provide a relay with better guiding effect than the prior art.

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] The first technical solution relates to a relay, comprising: a fixed part, which includes a receiving member and a stationary contact assembly fixedly connected to each other; and a moving contact part, which is adapted to move relative to the fixed part along the X-axis and includes the moving contact assembly, the moving contact assembly being closed or opened with the stationary contact assembly along the X-axis; one of the receiving member and the moving contact part is provided with a sliding groove, and the other is provided with a guide portion; the sliding groove extends along the X-axis, the guide portion extends into the sliding groove along the Z-axis, and the guide portion and the sliding groove are slidably engaged along the X-axis.

[0007] The second technical solution is based on the first technical solution, wherein the feature is that the stationary contact group includes two stationary contacts; the moving contact group includes a moving contact, the moving contact is provided with a flow bridge and two moving contacts, the two moving contacts are arranged along the Y-axis direction and fixed to the flow bridge, the two moving contacts are adapted to abut against the corresponding stationary contact in the closing direction and are adapted to move away from the corresponding stationary contact in the opening direction, the closing direction and the opening direction are both in the X-axis direction; the guide part is centrally located between the two moving contacts of the moving contact in the Y-axis direction.

[0008] The third technical solution is based on the second technical solution, wherein the moving contact part further includes a pusher, an elastic support group, and a limiting member; the pusher moves along the X-axis to drive the moving contact group to close or open with the stationary contact group along the X-axis; the elastic support group is installed between the pusher and the moving contact group along the X-axis; the limiting member is fixed relative to the pusher and abuts against the moving contact group along the disconnection direction when the moving contact group is disconnected from the stationary contact group; the guide part includes a first guide part, which is disposed on the limiting member.

[0009] The fourth technical solution is based on the third technical solution. In this solution, the moving contact part also includes a connector, which is integrally injection molded with the pusher insert. The connector extends along the Z-axis direction, and its two ends extend out of the pusher to form two connecting ends. The limiting member is also provided with a limiting body fixedly connected to the first guide part. The limiting body is provided with a limiting part and two connecting parts that are connected to each other. The limiting part is adapted to abut against the flow bridge. The two connecting parts extend from the two ends of the limiting part along the Z-axis direction along the disconnection direction and are fixedly connected to the corresponding connecting ends.

[0010] The fifth technical solution is based on the fourth technical solution. The number of first guide parts is two, and the number of slide grooves is two. The two first guide parts extend into the corresponding slide grooves from the limiting body in opposite directions along the Z-axis and are arranged in the Z-axis direction.

[0011] The sixth technical solution is based on the fifth technical solution, wherein the first guide part is located at the front of the limiting body along the closing direction.

[0012] The seventh technical solution is based on the third technical solution, wherein the projection of the first guide part on the first projection plane perpendicular to the Z-axis is circular.

[0013] The eighth technical solution is based on the third technical solution, wherein the first guide part is made of plastic, the limiting body is made of metal, and the two first guide parts and the limiting body insert are injection molded as one piece or bonded or screwed together.

[0014] The ninth technical solution is based on the fourth technical solution, wherein the guide part further includes a second guide part; the second guide part is located on the pusher.

[0015] The tenth technical solution is based on the ninth technical solution, wherein the pusher also includes a pusher body, and two second guides extend from the pusher body into the corresponding slide grooves opposite to each other along the Z-axis direction and are arranged along the Z-axis direction.

[0016] The eleventh technical solution is based on the ninth technical solution, wherein the projection of the second guide part on the first projection plane perpendicular to the Z-axis is circular.

[0017] The twelfth technical solution is based on the ninth technical solution, wherein each groove is divided into a first groove segment suitable for sliding cooperation with the first guide part and a second groove segment suitable for sliding cooperation with the second guide part; the first groove segment and the second groove segment are connected or separated along the X-axis direction.

[0018] The thirteenth technical solution is based on the ninth technical solution, wherein the first guide part and the slide groove form a first fitting gap along the Y-axis direction, and the second guide part and the slide groove form a second fitting gap along the Y-axis direction, and the first fitting gap is different from the second fitting gap.

[0019] The fourteenth technical solution is based on the thirteenth technical solution, wherein the first fitting clearance is smaller than the second fitting clearance.

[0020] The fifteenth technical solution is based on the third technical solution and further includes a magnetic circuit part, which includes: an armature assembly, which is fixedly connected to the pusher and includes a permanent magnet and two armatures, the two armatures being fixedly connected to two magnetic poles of the permanent magnet respectively, and the projections of the two armatures on a first projection plane perpendicular to the Z-axis direction intersect each other; and a coil assembly, which is provided with two magnetic drive ends, the two magnetic drive ends being arranged along the Y-axis direction, and the coil assembly being excited by a pulse electrical signal to reverse the polarity temporarily formed by the two magnetic drive ends, so as to switch the attraction of the two armatures at different positions in the X-axis direction and drive the armature assembly to move along the X-axis direction.

[0021] The sixteenth technical solution is based on the fifteenth technical solution, wherein each armature is provided with two attraction parts, the two attraction parts are provided with two magnetic drive ends, and the attraction parts are adapted to attract the corresponding magnetic drive ends along the X-axis direction.

[0022] The seventeenth technical solution is based on the sixteenth technical solution, wherein the two armatures are a first armature and a second armature, the two engaging parts of the first armature are a first engaging part and a second engaging part, and the two engaging parts of the second armature are a third engaging part and a fourth engaging part; the armature assembly moves along the X-axis between a first position and a second position; in the first position, the first engaging part and the third engaging part respectively engage the two magnetic drive ends to disconnect the moving contact group from the stationary contact group; in the second position, the fourth engaging part and the second engaging part respectively engage the two magnetic drive ends to close the moving contact group from the stationary contact group.

[0023] Compared with existing technologies, the above solution has the following beneficial effects:

[0024] In existing technologies, the guide rod slides into either the moving contact or the receiving component. Since the guide rod extends along the X-axis and the moving contact assembly moves along the X-axis, the portion of the guide rod suitable for sliding engagement is relatively long along the X-axis, making it prone to bending and deformation, resulting in unsatisfactory guiding performance. In the first technical solution, the guide portion extends into the groove along the Z-axis to slide into the groove along the X-axis. Because the extension direction of the portion of the guide portion suitable for sliding engagement is perpendicular to the movement direction of the moving contact assembly, this portion is much shorter than in existing technologies, less prone to bending and deformation, and provides better guiding performance. Furthermore, the mating surface size between the guide portion and the groove along the Y-axis can be minimized to reduce friction and the required driving force of the magnetic circuit, thereby reducing the volume of the magnetic circuit and facilitating the miniaturization of the relay.

[0025] In the second technical solution, the two moving contacts are adapted to contact or move away from the corresponding stationary contacts along the X-axis. Under this structure, the safe distance between the moving contact group and the stationary contact group is twice the actual distance between the moving contact and the corresponding stationary contact along the X-axis. Therefore, the relay has higher safety, stronger load capacity, and is more conducive to improving the safe distance between the moving contact group and the stationary contact group.

[0026] In the second technical solution, the guide portion is centrally located along the Y-axis. Compared to the guide rods being positioned on both sides along the Y-axis, this saves space along the Y-axis and avoids increasing the size of the relay along the Y-axis. It also prevents the moving contact from jamming due to the guide rods on both sides being non-parallel, thus reducing the energy consumption of the coil assembly and preventing the magnetic driving force of the magnetic circuit from being wasted on unnecessary work.

[0027] In the third technical solution, the flexible support assembly is positioned between the pusher and the moving contact assembly. After the pusher has overtraveled, it provides elastic force to the moving contact assembly along the closing direction, enabling the moving contact assembly to close more reliably with the stationary contact assembly. When the relay is subjected to a large fault current, the moving contact assembly is less likely to detach from the stationary contact assembly, thus preventing destructive arcing that could damage the relay. The flexible support assembly also generates additional repulsive force when the moving contact assembly breaks off from the stationary contact assembly, further aiding in the disconnection of the moving contact from the stationary contact assembly.

[0028] In the third technical solution, by setting a limiting component, it can be ensured that when the moving contact group and the stationary contact group are disconnected, the distance between the moving contact group and the stationary contact group meets the design requirements.

[0029] In the third technical solution, the first guide part is set on the limiting member, which means that the slide groove is set on the receiving member. Since the stationary contact assembly is fixed to the receiving member, setting the slide groove on the receiving member helps to ensure that the extension direction of the slide groove is perpendicular to the arrangement direction of the stationary contact points of the two stationary contacts, so that the slide groove guides the guide part along the X-axis more accurately.

[0030] In the third technical solution, since the limiting member continuously abuts against the moving contact group before the pushing member moves in the closing direction into the overtravel phase, and the moving contact has already abutted the corresponding stationary contact when entering the overtravel phase, setting the first guide part on the limiting member can better guide the moving contact to move along the X-axis, so that the moving contact correctly abuts the stationary contact along the X-axis, reducing the contact resistance between the moving and stationary contacts, and shortening the arcing time when the moving and stationary contacts break apart, which is beneficial to increasing the life of the moving and stationary contacts. This is because the guide part and the slide groove slide together along the X-axis, and a gap will inevitably be formed between them. If the distance between the guide part and the moving contact along the X-axis is too far, this gap will be amplified in the movement of the moving contact, making it impossible for the moving contact to correctly abut the stationary contact along the X-axis, thereby increasing the contact resistance between the moving and stationary contacts, and also making the arcing time when the moving contact breaks apart from the stationary contact longer, which is detrimental to the life of the moving and stationary contacts.

[0031] In the fourth technical solution, the connector and the pusher insert are integrally injection molded, making it easier to fix the limiting component relative to the pusher component. The limiting component is also more rigid, resulting in a better limiting effect on the moving contact group and saving the size of the relay along the Y-axis. The two ends of the connector along the Z-axis extend out of the pusher component to form a connection end that is fixed to the limiting component, which can save the size of the relay along the Z-axis and create more favorable conditions for increasing the safe distance between the moving contact group and the stationary contact group in a limited space.

[0032] In the fifth technical solution, the two first guide parts extend into the corresponding slide grooves from the limiting body in opposite directions along the Z-axis. When the Y-axis direction is the direction of gravity, the limiting member is supported by the side wall of the slide groove along the Y-axis direction. This also prevents the limiting member from deflecting in a plane perpendicular to the X-axis direction, which helps to ensure that the moving contact correctly abuts against the stationary contact along the X-axis direction.

[0033] In the sixth technical solution, the first guide part is located at the front of the limiting body along the closing direction, so that the first guide part is closer to the moving contact along the X-axis direction, which is more conducive to the moving contact correctly contacting the stationary contact along the X-axis direction, reducing the contact resistance between the moving contact and the stationary contact, and also shortening the arcing time when the moving contact and the stationary contact are disconnected, which is conducive to increasing the life of the moving contact and the stationary contact.

[0034] In the seventh technical solution, the projection of the first guide part on the first projection plane is circular, which helps to reduce the sliding friction between the first guide part and the slide groove along the X-axis and can prevent jamming during the sliding fit between the first guide part and the slide groove.

[0035] In the eighth technical solution, the first guide part is made of plastic, which helps to avoid scratching the plastic receiving part when the first guide part is made of metal. Therefore, it can prevent the scratches from falling on the moving and stationary contacts and affecting the contact resistance between the moving and stationary contacts. The limiting body is made of metal, so it is more rigid and has a better limiting effect on the moving contact assembly. The first guide part and the limiting body insert are injection molded as a single piece, or bonded or screwed together, resulting in a better combination. The position of the first guide part along the Y-axis is more precise, which is conducive to better sliding cooperation with the slide groove along the X-axis.

[0036] In the ninth technical solution, the first guide part and the second guide part cooperate with each other, which can better keep the moving contact part moving along the X-axis direction by sliding with the slide groove along the X-axis direction, while avoiding the overall deflection of the pusher and limiter fixed to each other in the plane perpendicular to the Z-axis direction, which helps to ensure that the moving contact point correctly abuts against the stationary contact point along the X-axis direction.

[0037] In the tenth technical solution, two second guide portions extend from the push body into corresponding grooves opposite to each other along the Z-axis direction. When the Y-axis direction is the direction of gravity, the push member is supported by the side wall of the groove along the Y-axis direction, and cooperates with the first guide portion to support the entire moving contact part. At the same time, it can also prevent the push member from deflecting in a plane perpendicular to the X-axis direction, which helps to ensure that the moving contact correctly abuts against the stationary contact along the X-axis direction.

[0038] In the eleventh technical solution, the projection of the second guide part on the first projection plane is circular, which helps to reduce the sliding friction between the second guide part and the slide groove along the X-axis direction and avoid jamming during the sliding fit between the second guide part and the slide groove.

[0039] In the twelfth technical solution, each groove is divided into a first groove segment suitable for sliding cooperation with the first guide part and a second groove segment suitable for sliding cooperation with the second guide part; the first groove segment and the second groove segment are connected or separated along the X-axis direction, which can ensure that the first groove segment and the second groove segment are both located on a straight line extending along the X-axis direction, which is beneficial to more effectively guiding the movement of the moving contact assembly along the X-axis direction.

[0040] In the thirteenth technical solution, the first mating interval formed between the first guide part and the slide groove along the Y-axis direction is different from the mating clearance between the second guide part and the slide groove along the Y-axis direction. This is beneficial for reducing the difficulty of establishing a sliding mating clearance between the first and second guide parts and the slide groove, reducing the manufacturing precision requirements of the moving contact part and the fixed part, and also for correctly guiding the movement of the moving contact part along the Y-axis direction. This is because if both the first and second mating clearances are small, the manufacturing precision requirements of the pusher and limiter fixed to each other are high, and the fitting precision requirements of the shell and the cover are also high. Otherwise, the first or second guide part may not be able to be inserted into the slide groove, making it impossible for the first and second guide parts to establish a sliding mating relationship with the slide groove. If both the first and second mating clearances are large, the sliding mating between the receiving part and the guide part cannot correctly guide the movement of the moving contact part along the X-axis direction, and the moving contact part may deflect in a plane perpendicular to the Z-axis direction. Therefore, the first fitting clearance is different from the second fitting clearance. It can reduce the manufacturing precision requirements of the moving part and the fixed part due to the relatively large fitting clearance, and it can also guide the movement of the moving part along the Y-axis due to the relatively small fitting clearance.

[0041] In the fourteenth technical solution, the first fitting gap is smaller than the second fitting gap. Since the first guide portion is closer to the moving contact assembly along the X-axis, it can better guide the moving contact to move along the X-axis, ensuring that the moving contact correctly abuts against the stationary contact along the X-axis, reducing the contact resistance between the moving and stationary contacts, and shortening the arcing time when the moving and stationary contacts break, thus increasing the lifespan of both the moving and stationary contacts.

[0042] The fifteenth technical solution, compared to existing oscillating magnetic latching relays, retains the coil assembly of the oscillating magnetic latching relay but improves the armature assembly by changing the two armatures fixed to the permanent magnet from parallel to intersecting, allowing the armature assembly to transition from oscillating relative to the coil assembly to linear motion relative to the coil assembly. Because the armature assembly moves linearly relative to the coil assembly, there is no loss of the radial component of the oscillation stroke of the oscillating magnetic latching relay. Therefore, the space utilization of the relay is higher, creating more favorable conditions for increasing the safe distance between the moving contact group and the stationary contact group within a limited space.

[0043] Compared with the existing direct-acting magnetic latching relay, the fifteenth technical solution has an advantage in that the coil winding axis extends along the Y-axis and the two magnetic drive ends are arranged along the Y-axis. At the same time, the linear movement direction of the armature assembly is perpendicular to the Y-axis direction in the X-axis direction. This layout is beneficial for making room for the movement of the armature assembly and the moving contact assembly along the X-axis. Furthermore, the size of the receiving component along the Y-axis direction is mainly determined by the length of the coil assembly along the Y-axis direction. Therefore, the thirteenth technical solution does not require the relay to have a long length in one direction (whether it is the X-axis direction or the Y-axis direction), which makes the relay easier to adapt to limited space and creates more favorable conditions for increasing the safety distance between the moving contact assembly and the stationary contact assembly in limited space.

[0044] Compared with the existing direct-acting magnetic latching relay, the fifteenth technical solution has a smaller support shaft diameter and a smaller inner diameter of the coil winding because it does not require a push rod and a moving iron core inside the coil winding. Therefore, compared with the existing direct-acting magnetic latching relay, the first technical solution generates a stronger magnetic driving force from the coil winding and a greater pushing force on the armature assembly when the space occupied by the coil assembly is the same. This creates more favorable conditions for increasing the safe distance between the moving contact group and the stationary contact group in a limited space.

[0045] In the sixteenth technical solution, by modifying the two armatures in the armature assembly of the oscillating magnetic latching relay to cross each other, a first part of a magnetic circuit without any air gap can be formed between the two engaging parts of the armature assembly through the permanent magnet and the two armatures. A second part of a magnetic circuit running through the entire coil assembly can also be formed between the two magnetic drive ends of the coil assembly. In the magnetic latching state, the engaging parts engage the corresponding magnetic drive ends along the X-axis, allowing the first and second parts to form a complete magnetic circuit without air gap. Therefore, magnetic loss is lower and magnetic efficiency is higher. Without increasing the power consumption of the coil assembly, this facilitates increasing the travel of the moving contact group. Furthermore, with a comparable magnetic drive force, it reduces the power consumption required for magnetic drive in the coil assembly, allowing for a smaller coil assembly size. Therefore, it creates more favorable conditions for increasing the safe distance between the moving contact group and the stationary contact group within a limited space.

[0046] In existing direct-acting magnetic latching relays, two opposing magnetic circuits are often formed in the magnetic latching state. One magnetic circuit passes through the yoke plate, and the other passes through the stationary iron core. The magnetic forces exerted by the two magnetic circuits on the moving iron core are in opposite directions. However, in the sixteenth technical solution, the second part of the magnetic circuit passes through the entire coil assembly, thus avoiding the above-mentioned problem. Therefore, compared with existing direct-acting magnetic latching relays, the magnetic force during magnetic latching is greater. Especially when the relay is subjected to a large fault current, the armature assembly is less likely to disengage from the magnetic latching state and move. This helps to prevent the moving contact group from disengaging from the stationary contact group due to a large fault current, which could lead to destructive arcing.

[0047] In the seventeenth technical solution, when the armature assembly is in the magnetically held state in the first position, and the coil assembly is excited by a pulsed electrical signal to reverse the polarity temporarily formed by the two magnetic drive ends, not only do the two magnetic drive ends generate magnetic repulsion on the first and third attraction parts, but also the fourth attraction part and the second attraction part form a first part of a push magnetic circuit without air gap through the armature assembly. The two magnetic drive ends form a second part of a push magnetic circuit that runs through the entire coil assembly through the coil assembly. The first and second parts of the push magnetic circuit constitute a complete push magnetic circuit. This push magnetic circuit only has the necessary stroke air gap and no other air gaps, thus resulting in higher magnetic efficiency. The magnetic driving force exerted by the two magnetic drive ends on the armature assembly under the same power consumption is stronger, which is more conducive to increasing the safety distance between the moving contact group and the stationary contact group. Similarly, when the armature assembly is in the magnetically held state in the second position, and the coil assembly is excited by a pulsed electrical signal to reverse the polarity temporarily formed by the two magnetic drive ends, it also has the same technical effect. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the embodiments, the accompanying drawings used are briefly described below:

[0049] Figure 1 This is an exploded perspective view of the relay in Example 1;

[0050] Figure 2 This is a top view of the housing in Embodiment 1;

[0051] Figure 3 This is a perspective view of the cover in Example 1;

[0052] Figure 4 This is a perspective view of the stationary contact assembly in Embodiment 1;

[0053] Figure 5 This is a three-dimensional view of the static magnetic conductor in Example 1;

[0054] Figure 6 This is a top view of the static magnetic conductor in Example 1;

[0055] Figure 7 This is a front view of the magnetic circuit portion in Example 1;

[0056] Figure 8 This is a top view of the coil assembly in Embodiment 1;

[0057] Figure 9 This is a top view of the armature assembly in Embodiment 1;

[0058] Figure 10 This is a right view of the armature assembly in Embodiment 1;

[0059] Figure 11 This is a perspective view of the shielding cover in Example 1;

[0060] Figure 12 This is a schematic diagram of the magnetic circuit when the armature assembly is in the magnetic holding state in the first position in Embodiment 1.

[0061] Figure 13 This is a schematic diagram of the magnetic circuit state when the coil winding receives the first pulse electrical signal in Embodiment 1;

[0062] Figure 14 This is a schematic diagram of the magnetic circuit state when the armature assembly moves to the second position in Embodiment 1;

[0063] Figure 15 This is a schematic diagram of the magnetic circuit when the armature assembly is in the magnetic holding state in the second position in Embodiment 1.

[0064] Figure 16 This is a schematic diagram of the magnetic circuit state when the coil winding receives the second pulse electrical signal in Embodiment 1;

[0065] Figure 17 This is a schematic diagram of the magnetic circuit state when the armature assembly moves to the first position in Embodiment 1;

[0066] Figure 18 This is a top view of the movable contact part in Embodiment 1;

[0067] Figure 19 This is a front view of the pusher component in Embodiment 1;

[0068] Figure 20 This is an exploded perspective view of some components of the moving contact part in Embodiment 1;

[0069] Figure 21 This is a right view of the limiting component in Embodiment 1;

[0070] Figure 22 for Figure 21 Sectional view along axis AA;

[0071] Figure 23This is a schematic diagram of the internal structure of the relay when it is in the off state in Embodiment 1;

[0072] Figure 24 This is a schematic diagram of the internal structure of the relay when it is in the ON state in Embodiment 1;

[0073] Figure 25 This is a right view of the relay in Example 1;

[0074] Figure 26 for Figure 25 BB-direction sectional view.

[0075] Explanation of key figure labels:

[0076] 1. Relay; 2. Fixed part; 3. Magnetic circuit part; 4. Moving contact part; 5. Micro switch; 6. Receiving part; 7. Stationary contact assembly; 8. Stationary magnetic conductor; 9. Barrier component; 10. Housing; 11. Cover; 12. Cavity; 13. Slide groove; 14. First slot section; 15. Second slot section; 16. Stationary magnetic conductor slot; 17. Barrier component slot; 18. Abutment surface; 19. Stationary contact; 20. Stationary contact point; 21. Connecting terminal; 22. First stationary contact; 23. Second stationary contact; 24. First current-passing part; 25. First stationary contact point; 26. Second current-passing part; 27. Third current-passing part; 28. Fourth current-passing part; 29. ​​Fifth current-passing part; 30. Sixth current-passing part; 27a. Measuring terminal; 3 1. First connecting terminal; 32. Seventh current-passing section; 33. Second stationary contact; 34. Eighth current-passing section; 35. Ninth current-passing section; 36. Second connecting terminal; 37. Coil assembly; 38. Armature assembly; 39. Shielding cover; 40. Coil frame; 41. Coil winding; 42. Signal input terminal; 43. Iron core; 44. Yoke; 45. Magnetic drive end; 46. First yoke; 47. Second yoke; 48. First magnetic drive end; 49. Second magnetic drive end; 50. Permanent magnet; 51. Armature; 52. First permanent magnet; 53. Second permanent magnet; 54. Magnetic pole; 55. First magnetic pole; 56. Second magnetic pole; 57. First armature; 58. Second armature; 59. Intersecting parts ; 60. Suction part; 61. First suction part; 62. Second suction part; 63. Third suction part; 64. Fourth suction part; 65. First shielding component; 66. Second shielding component; 67. Shielding wall; 68. Connecting wall; 69. Groove; 70. Pushing component; 71. Connecting component; 72. Moving contact assembly; 73. Moving magnetic conductor assembly; 74. Elastic support assembly; 75. Elastic component; 76. Limiting component; 77. Pushing body; 78. Second guide part; 79. Receiving part; 80. First insert part; 81. Second insert part; 82. Connecting post; 83. Moving spring; 84. Connecting end; 85. Moving contact; 86. Flow bridge; 87. Moving contact; 88. First moving contact; 89. Second moving contact; 90. 91. Magnetic conductor; 92. Extension; 93. Elastic support; 94. Frame; 95. First elastic part; 96. First connecting hole; 97. First elastic arm; 98. Main body; 99. Second elastic part; 100. Second connecting hole; 101. Second elastic arm; 102. Limiting body; 103. First guide part; 104. Limiting part; 105. Connecting part; 106. Clearance hole; 107. Assembly hole; 108. Bending part; 109. Guide part; 110. Static contact terminal; F1. First magnetic force; M1. Anti-short circuit magnetic circuit; M2. Reverse magnetic field; S1. First surface; S2. Second surface; W. Spacing; X1. Closing direction; X2. Disconnecting direction. Detailed Implementation

[0077] In the claims and the description other than the embodiments, the terms "X-axis direction," "Y-axis direction," and "Z-axis direction" only refer to a feature having one of the aforementioned directions being perpendicular to a feature having another direction, and do not require implementation according to the "X-axis direction," "Y-axis direction," and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction is perpendicular to both the Y-axis direction and the Z-axis direction. The X-axis direction can be divided into front and rear, as detailed in the appendix. Figure 23 The left side is front, and the right side is back. The X-axis direction can also be divided into the closing direction and the opening direction. The closing direction refers to the direction of movement of the moving contact assembly when it moves to a closed state with the stationary contact assembly, that is, the direction from back to front. (See the instruction manual attached.) Figure 23 The direction from right to left is indicated by the term "center"; the disconnection direction refers to the direction of movement of the moving contact assembly when it moves to a state where it is disconnected from the stationary contact assembly, i.e., from front to back. (See attached instruction manual.) Figure 23 The center line runs from left to right; the Y-axis can be divided into left and right, see the instruction manual. Figure 23 The upper middle side is left, and the lower side is right; the Z-axis direction can be divided into upper and lower.

[0078] Unless otherwise specified, the terms “first,” “second,” or “third,” etc., in the claims and description are used to distinguish different objects and not to describe a particular order.

[0079] Unless otherwise specified, the terms “fixed connection”, “fixed connection” or “relatively fixed” in the claims and description shall be interpreted broadly to mean any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0080] Unless otherwise specified, the terms “comprising,” “having,” and variations thereof in the claims and description shall mean “including but not limited to.”

[0081] In the claims and description, unless otherwise specified, the term "have" means that a technical feature that follows is part of a technical feature that precedes it.

[0082] In the claims and description, unless otherwise specified, the term "group" means collection, and unless otherwise specified, it may include one element or multiple elements. For example, "moving contact group" may include one moving contact or two or more moving contacts.

[0083] Unless otherwise specified in the claims and description, the term "temporarily formed" means that the polarity of the magnetic drive end formed by the pulsed electrical signal disappears as the pulsed electrical signal disappears.

[0084] Unless otherwise specified in the claims and description, the term "reverse" means that when the current direction of the pulse electrical signal received by the coil winding this time is different from that of the pulse electrical signal received last time, the polarity of the temporarily formed magnetic drive terminal is opposite to that of the temporarily formed magnetic drive terminal last time. Of course, those skilled in the art should understand that for a magnetic latching relay, if the current direction of the pulse electrical signal received by the coil assembly this time is the same as that of the pulse electrical signal received last time, then the pulse electrical signal received this time has no control significance, and the state of the relay will not change.

[0085] In the claims and description, unless otherwise specified, the term "back side" means the side facing away from the stationary contact assembly.

[0086] Unless otherwise specified in the claims and description, the term "installed" means directly or indirectly connected to each other.

[0087] Example 1

[0088] Relay 1 is used to receive electrical signals to control the on / off state of an external circuit. Specifically, in this embodiment, relay 1 is a magnetic latching relay, which is used to receive pulse electrical signals to control the on / off state of the external circuit. In this embodiment, the pulse electrical signal can be divided into a first pulse electrical signal and a second pulse electrical signal. The first pulse electrical signal is used to control the external circuit to conduct, and the second pulse electrical signal is used to control the external circuit to turn off. After receiving the first pulse electrical signal, relay 1 switches from the off state to the on state. After the first pulse electrical signal disappears, relay 1 remains in the on state until it receives the second pulse electrical signal. After receiving the second pulse electrical signal, relay 1 switches from the on state to the off state. After the second pulse electrical signal disappears, relay 1 remains in the off state until it receives the first pulse electrical signal. In this embodiment, the external circuit is a single-phase AC circuit. Relay 1 needs to control the on / off state of the single-phase AC circuit.

[0089] See Figure 1 , Figure 1 The structure of relay 1 in this embodiment is shown. For example... Figure 1 As shown, relay 1 includes a fixed part 2, a magnetic circuit part 3, a moving contact part 4, and a micro switch 5. The fixed part 2 is fixed relative to each other and serves as the motion reference for the moving contact part 4. The magnetic circuit part 3 receives pulse electrical signals and drives the moving contact part 4 to move based on these signals. The moving contact part 4, driven by the magnetic circuit part 3, moves relative to the fixed part 2 along the X-axis to control the on / off state of external circuits. The micro switch 5 sends relay status signals to an external relay status sensing circuit.

[0090] like Figure 1 As shown, the fixed part 2 includes a receiving member 6, a static contact assembly 7, a static conductive magnet 8, and a blocking member 9.

[0091] like Figure 1 As shown, the accommodating member 6 is made of plastic and includes a housing 10 and a cover 11.

[0092] See Figure 2 , Figure 2 The housing 10 in this embodiment is shown. (As shown...) Figure 2 As shown, the housing 10 has a cavity 12, which opens upward along the Z-axis and is used to house the stationary contact assembly 7, the stationary magnetic conductor 8, the barrier 9, the magnetic circuit portion 3, the moving contact portion 4, and the micro switch 5. A groove 13 is provided in the middle of the bottom wall of the housing 10 along the Y-axis. The groove 13 extends along the X-axis and is divided into a first groove segment 14 and a second groove segment 15. The first groove segment 14 is located in front of the second groove segment 15. In this embodiment, the first groove segment 14 and the second groove segment 15 of the housing 10 are separated from each other along the X-axis. In other embodiments, the first groove segment 14 and the second groove segment 15 of the housing 10 can be configured to be connected to each other along the X-axis. A stationary magnetic conductor groove 16 is provided in front of the first groove segment 14. Barrier grooves 17 are provided on the left and right sides of the first groove segment 14 along the Y-axis. An abutment surface 18 is provided behind each of the two barrier grooves 17, with the abutment surface 18 facing forward.

[0093] See Figure 3 , Figure 3 The cover 11 in this embodiment is shown. Figure 3 As shown, the cover 11 is fixedly connected to the housing 10 and serves to shield the cavity 12. The cover 11 also has a groove 13, which extends along the X-axis and is divided into a first groove segment 14 and a second groove segment 15. The first groove segment 14 of the cover 11 corresponds to the first groove segment 14 of the housing 10 along the Z-axis. The second groove segment 15 of the cover 11 corresponds to the second groove segment 15 of the housing 10 along the Z-axis. In this embodiment, the first groove segment 14 and the second groove segment 15 of the cover 11 are separated from each other along the X-axis; in other embodiments, the first groove segment 14 and the second groove segment 15 of the cover 11 may be connected to each other along the X-axis.

[0094] See Figure 4 , Figure 23 and Figure 26 , Figure 4 , Figure 23 and Figure 26The stationary contact assembly 7 of this embodiment is shown. The stationary contact assembly 7 is used for electrical connection to an external circuit. The stationary contact assembly 7 includes two stationary contacts 19. Each stationary contact 19 has a stationary contact 20 and a connection terminal 21. The connection terminal 21 is used to connect to an external circuit. One of the two connection terminals 21 is used to connect to a power source, and the other is used to connect to a load. When both stationary contacts 19 are on, the power source and the load are connected; when both stationary contacts 19 are off, the power source and the load are off. Specifically, in this embodiment, the two stationary contacts 19 are a first stationary contact 22 and a second stationary contact 23. The first stationary contact 22 has a first current-passing portion 24, a first stationary contact 25, a second current-passing portion 26, a third current-passing portion 27, a fourth current-passing portion 28, a fifth current-passing portion 29, and a sixth current-passing portion 30. The first current-passing portion 24 is perpendicular to the X-axis direction and extends along the Z-axis direction. The first current-passing portion 24 has a first surface S1 facing rearward along the X-axis direction. The first stationary contact 25 is the stationary contact 20 of the first stationary contact member 22. There are two first stationary contacts 25, arranged along the Z-axis. The two first stationary contacts 25 extend rearward from the first surface S1 of the first flow passage 24 along the X-axis. The second flow passage 26 extends forward from the right side of the first flow passage 24 along the Y-axis along the X-axis. The third flow passage 27 extends to the right from the front end of the second flow passage 26 along the X-axis along the Y-axis, as shown below. Figure 23 As shown, the third flow passage 27 extends to the right through the receiving member 6 along the Y-axis direction. Figure 4 As shown, the lower part of the third flow section 27 along the Z-axis direction is provided with a measuring terminal 27a extending downward along the Z-axis direction, as... Figure 26 As shown, the measuring terminal 27a extends downward along the Z-axis from the receiving member 6. Figure 4 As shown, the fourth flow passage 28 extends rearward from the third flow passage 27 along the right side of the Y-axis direction and along the X-axis direction. The fifth flow passage 29 extends from the rear end of the fourth flow passage along the X-axis direction and along the right side of the Y-axis direction. The sixth flow passage 30 extends rearward from the fifth flow passage 29 along the right side of the Y-axis direction and along the lower part of the Z-axis direction and along the X-axis direction. In this embodiment, the portion of the third flow passage 27 extending out of the receiving member 6, the fourth flow passage, the fifth flow passage, and the sixth flow passage 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 passage 32, a second stationary contact 33, an eighth flow passage 34, and a ninth flow passage 35. The seventh flow passage 32 is provided with a first surface S1 facing rearward along the X-axis direction. Figure 4(Not marked in the text). The first surface S1 of the seventh flow section 32 and the first surface S1 of the first flow section 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. There are two second stationary contacts 33, which are arranged along the Z-axis direction. The two second stationary contacts 33 extend rearward from the first surface S1 of the seventh flow section 32 along the X-axis direction. The eighth flow section 34 extends rearward from the right side of the seventh flow section 32 along the Y-axis direction along the X-axis direction. The ninth flow section 35 extends from the rear end of the eighth flow section along the X-axis direction and the lower part along the Z-axis direction along the Y-axis direction to the right. Figure 23 As shown, the ninth current-passing portion 35 extends to the right along the Y-axis direction into the receiving member 6. In this embodiment, the ninth current-passing portion 35 constitutes the second connecting terminal 36. The second connecting terminal 36 is the connecting terminal 21 of the second stationary contact 23. The second connecting terminal 36 can be used to mount a current transformer. In this embodiment, the two connecting terminals 21 are arranged along the X-axis direction and both extend out of the receiving member 6 along the Y-axis direction.

[0095] See Figure 5 and Figure 6 , Figure 5 and Figure 6 The statically conductive magnet 8 in this embodiment is shown. (As shown...) Figure 5 As shown, the stationary magnet 8 extends along the Z-axis. Figure 6 As shown, the surface of the stationary magnet 8 facing forward along the X-axis forms a second surface S2. The second surface S2 is perpendicular to the X-axis direction.

[0096] See Figure 1 , Figure 1 The barrier element 9 in this embodiment is shown. In this embodiment, there are two barrier elements 9. Each barrier element 9 is sheet-shaped and extends along the X-axis direction, while having dimensions along the Z-axis direction. Therefore, both barrier elements 9 are perpendicular to the Y-axis direction. The barrier elements 9 are made of a high-temperature resistant insulating material. In this embodiment, a ceramic material is used.

[0097] See Figure 7 , Figure 7 The magnetic circuit portion 3 in this embodiment is shown. For example... Figure 7 As shown, the magnetic circuit part 3 includes a coil assembly 37, an armature assembly 38, and a shield 39.

[0098] See Figure 7 and Figure 8 , Figure 7 and Figure 8 The coil assembly 37 in this embodiment is shown. (As...) Figure 7 and Figure 8As shown, the coil assembly 37 includes a coil frame 40, a coil winding 41, signal input terminals 42, an iron core 43, and yokes 44. The coil frame 40 is fixedly connected to the housing 10. The coil frame 40 extends along the Y-axis and has a central hole extending along the Y-axis. Each end of the coil frame 40 along the Y-axis has a retaining wall. The coil winding 41 is wound around the coil frame 40 and located between the two retaining walls. The axis of the coil winding 41 extends along the Y-axis. The two terminals of the coil winding 41 are connected to three signal input terminals 42, which are used to receive pulse electrical signals. The iron core 43 is placed in the central hole of the coil frame 40 and extends along the Y-axis. There are two yokes 44. The two yokes 44 are fixedly connected to both sides of the iron core 43 along the Y-axis, and the ends of the two yokes 44 away from the iron core 43 respectively form magnetic drive ends 45. The two magnetic drive ends 45 are arranged along the Y-axis and extend close to each other along the Y-axis. The two yokes 44 are respectively the first yoke 46 and the second yoke 47. The two magnetic drive ends 45 are respectively the first magnetic drive end 48 and the second magnetic drive end 49. The first magnetic drive end 48 is formed on the first yoke 46, and the second magnetic drive end 49 is formed on the second yoke 47. When the coil winding 41 is excited by a pulse electrical signal, it reverses the polarity temporarily formed by the two magnetic drive ends 45 to switch the different parts of the two armatures 51 of the armature assembly 38 and drive the armature assembly 38 to move along the X-axis. In this embodiment, for the sake of convenience, it is assumed that when the signal input terminal 42 receives the first pulse electrical signal, the coil winding 41 generates a first magnetic field, and the first magnetic drive end 48 temporarily has the N polarity, and the second magnetic drive end 49 temporarily has the S polarity. After the first pulse signal disappears, the first magnetic field of the coil winding 41 disappears, and the first magnetic drive end 48 and the second magnetic drive end 49 no longer have polarity based on the first magnetic field. When the signal input terminal 42 receives a second pulse signal with a current direction opposite to that of the first pulse signal, the coil winding 41 generates a second magnetic field, causing the polarity of the first magnetic drive end 48 to reverse and become S-polarity, and the polarity of the second magnetic drive end 49 to reverse and become N-polarity. After the second pulse signal disappears, the second magnetic field of the coil winding 41 disappears, and the first magnetic drive end 48 and the second magnetic drive end 49 no longer have polarity based on the second magnetic field. In this embodiment, "temporarily formed" means that the polarity of the magnetic drive end 45 formed by the pulse signal disappears as the pulse signal disappears. In this embodiment, "reversed" means that when the pulse signal received by the coil winding 41 this time has a different current direction than the pulse signal received last time, the polarity of the temporarily formed magnetic drive end 45 is opposite to that of the temporarily formed magnetic drive end 45 last time.

[0099] See Figure 9 and Figure 10 , Figure 9 and Figure 10The armature assembly 38 in this embodiment is shown. The armature assembly 38 is driven by the coil assembly 37 to move along the X-axis between a first position and a second position. When the armature assembly 38 moves to the first position, the relay 1 is in the off state, and the external circuit is turned off. When the armature assembly 38 moves to the second position, the relay 1 is in the on state, and the external circuit is turned on. The first position is further back along the X-axis than the second position. Figure 9 and Figure 10 As shown, in this embodiment, the armature assembly 38 includes two permanent magnets 50 and two armatures 51. The two permanent magnets 50 are formed of magnetized magnets. In other embodiments, the two permanent magnets 50 can also be made of other permanent magnet materials, such as neodymium iron boron permanent magnets. In this embodiment, the two permanent magnets 50 are a first permanent magnet 52 and a second permanent magnet 53. Each permanent magnet 50 has two magnetic poles 54 with fixed polarity, namely a first magnetic pole 55 and a second magnetic pole 56. The first magnetic pole 55 and the second magnetic pole 56 have opposite polarities. For ease of explanation, it is assumed that the polarity of the first magnetic pole 55 is the N pole and the polarity of the second magnetic pole 56 is the S pole. In this embodiment, the two magnetic poles 54 of each permanent magnet 50 are arranged along the X-axis. In this embodiment, the two permanent magnets 50 are arranged along the Y-axis. The first permanent magnet 52 is on the left side along the Y-axis, and the second permanent magnet 53 is on the right side along the Y-axis. The first permanent magnet 52 has its first magnetic pole 55 facing forward along the X-axis and its second magnetic pole 56 facing backward along the X-axis. The second permanent magnet 53 has its first magnetic pole 55 facing backward along the X-axis and its second magnetic pole 56 facing forward along the X-axis. Two armatures 51 are designated as first armature 57 and second armature 58. The first armature 57 is fixedly connected to the first magnetic pole 55 of the two permanent magnets 50. The second armature 58 is fixedly connected to the second magnetic pole 56 of the two permanent magnets 50. The projections of the two armatures 51 onto a first projection plane perpendicular to the Z-axis intersect each other. The intersecting portions 59 of the two armatures 51 form a gap W along the Z-axis. Each armature 51 has two attracting portions 60 on both sides along the Y-axis. Specifically, the first armature 57 has a first attracting portion 61 and a second attracting portion 62 on both sides along the Y-axis; the first attracting portion 61 is on the left side along the Y-axis and in front along the X-axis; the second attracting portion 62 is on the right side along the Y-axis and in the rear along the X-axis. The second armature 58 has a third engaging portion 63 and a fourth engaging portion 64 on both sides along the Y-axis. The third engaging portion 63 is on the right side along the Y-axis and in front along the X-axis; the fourth engaging portion 64 is on the left side along the Y-axis and in the rear along the X-axis. Therefore, in this embodiment, the first engaging portion 61 and the third engaging portion 63 are arranged along the Y-axis, the fourth engaging portion 64 and the second engaging portion 62 are arranged along the Y-axis, the first engaging portion 61 and the fourth engaging portion 64 are arranged along the X-axis, and the third engaging portion 63 and the second engaging portion 62 are arranged along the X-axis. In this embodiment, the projection of the armature assembly 38 on the first projection plane is mirror-symmetrical with respect to a plane of symmetry perpendicular to the Y-axis.

[0100] See Figure 7 and Figure 11 , Figure 7 and Figure 11 The shielding cover 39 in this embodiment is shown. (As shown...) Figure 11 As shown, the shielding cover 39 includes a first shielding member 65 and a second shielding member 66. The first shielding member 65 and the second shielding member 66 are inserted and fitted together to form the shielding cover 39. The shielding cover 39 has two shielding walls 67 and a connecting wall 68. Each shielding wall 67 has a groove 69 at its front end along the X-axis direction, the groove 69 extends along the X-axis direction and is located at the middle of the shielding wall 67 along the Y-axis direction. Figure 7 As shown, both shielding walls 67 are arranged perpendicular to the Z-axis direction. The two shielding walls 67 are positioned above and below the coil assembly 37 along the Z-axis direction. A connecting wall 68 is perpendicular to the X-axis direction and is used to connect the two shielding walls 67. The connecting wall 68 is positioned behind the coil assembly 37 along the X-axis direction.

[0101] See Figures 12 to 17 , Figures 12 to 17 The operating principle of the magnetic circuit section 3 in this embodiment is shown.

[0102] like Figure 12 As shown, in this embodiment, the armature assembly 38 is located along the Y-axis between the arms of the two yokes 44 extending along the X-axis. The first magnetic drive end 48 is located along the X-axis between the first attraction part 61 and the fourth attraction part 64; the second magnetic drive end 49 is located along the X-axis between the third attraction part 63 and the second attraction part 62.

[0103] Figure 12 This illustration shows the state of the magnetic circuit portion 3 when the armature assembly 38 is in the magnetic holding state in the first position. For example... Figure 12As shown, when the armature assembly 38 is in the magnetically held state in the first position, the first engaging part 61 engages the first magnetic drive end 48, and the third engaging part 63 engages the second magnetic drive end 49. At this time, the magnetic circuit part 3 forms two closed magnetic loops, namely the first closed magnetic loop and the second closed magnetic loop. The first closed magnetic loop starts from the first magnetic pole 55 of the first permanent magnet 52, passes through the first engaging part 61, the first magnetic drive end 48, the first yoke 46, the iron core 43, the second yoke 47, the second magnetic drive end 49, the third engaging part 63, the part 59 where the second armature 58 intersects, and the second magnetic pole 56 of the first permanent magnet 52, and returns to the first magnetic pole 55 of the first permanent magnet 52, without any air gap in between, and passes through the entire coil assembly 37. The second closed magnetic circuit extends from the first pole 55 of the second permanent magnet 53, through the intersecting portions 59 of the first armature 57, 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, and the second pole 56 of the second permanent magnet 53 back to the first pole 55 of the second permanent magnet 53, without any air gaps in between, and passes through the entire coil assembly 37. Therefore, when the armature assembly 38 is in the magnetic holding state in the first position, due to the existence of the first closed magnetic circuit and the second closed magnetic circuit, and the superposition effect between the two, a greater magnetic attraction is generated between the first engaging portion 61 and the first magnetic drive end 48, and between the third engaging portion 63 and the second magnetic drive end 49, so that the armature assembly 38 is held in the first position relative to the coil assembly 37.

[0104] Figure 13 This illustration shows the state of the magnetic circuit portion 3 when the coil assembly 37 in this embodiment has just received the first pulse electrical signal. (As shown...) Figure 13As shown, at this time, the coil winding 41 is excited by the first pulse electrical signal to generate a first magnetic field, causing the first magnetic drive end 48 to temporarily have an N pole polarity and the second magnetic drive end 49 to temporarily have an S pole polarity. Since the first magnetic drive end 48 and the first attraction part 61 have the same polarity (N pole), the first magnetic drive end 48 generates a magnetic repulsion force on the first attraction part 61; since the second magnetic drive end 49 and the third attraction part 63 have the same polarity (S pole), the second magnetic drive end 49 generates a magnetic repulsion force on the third attraction part 63. Furthermore, the magnetic circuit section 3 also forms two driving magnetic circuits at this time, namely the first driving magnetic circuit and the second driving magnetic circuit. The first driving magnetic circuit originates from the first magnetic drive end 48, passes through the travel air gap, the fourth attraction part 64, the second magnetic pole 56 of the first permanent magnet 52, the first magnetic pole 55 of the first permanent magnet 52, the intersecting portion 59 of the first armature 57, the second attraction part 62, the travel air gap, the second magnetic drive end 49, the second yoke 47, the iron core 43, and the first yoke 46, and returns to the first magnetic drive end 48. It has only two travel air gaps in between and passes through the entire coil assembly 37. The second driving magnetic circuit originates from the first magnetic drive end 48, passes through the travel air gap, the fourth attraction part 64, the intersecting portion 59 of the second armature 58, the second magnetic pole 56 of the second permanent magnet 53, the first magnetic pole 55 of the second permanent magnet 53, the second attraction part 62, the travel air gap, the second magnetic drive end 49, the second yoke 47, the iron core 43, and the first yoke 46, and returns to the first magnetic drive end 48. It also has only two travel air gaps in between and passes through the entire coil assembly 37. Therefore, when the coil assembly 37 receives the first pulse electrical signal, not only does the first magnetic drive end 48 exert a magnetic repulsion force on the first attraction part 61, and the second magnetic drive end 49 exert a magnetic repulsion force on the third attraction part 63, but also, due to the existence of the first driving magnetic circuit and the second driving magnetic circuit, and the superposition effect between the two, the first magnetic drive end 48 generates a magnetic attraction force on the fourth attraction part 64, and the second magnetic drive end 49 generates a magnetic attraction force on the second attraction part 62, so that the coil assembly 37 can form a stronger driving force on the armature assembly 38, pushing the armature assembly 38 from the first position to the second position along the closed direction X1.

[0105] Figure 14 This illustration shows the state of the magnetic circuit portion 3 when the armature assembly 38 is driven by the coil assembly 37 to move along the closed direction X1 to the second position. For example... Figure 14As shown, when the armature assembly 38 has just moved to the second position, the first pulse electrical signal and the first magnetic field have not yet disappeared. The first magnetic drive end 48 still temporarily has the N pole polarity, and the second magnetic drive end 49 still temporarily has the S pole polarity. At this time, the magnetic circuit part 3 forms two closed magnetic loops, namely the third closed magnetic loop and the fourth closed magnetic loop. The third closed magnetic loop starts from the first magnetic drive end 48, passes through the fourth attraction part 64, the second magnetic pole 56 of the first permanent magnet 52, the first magnetic pole 55 of the first permanent magnet 52, the part 59 where the first armature 57 intersects with each other, the second attraction part 62, the second magnetic drive end 49, the second yoke 47, the iron core 43, and the first yoke 46, and returns to the first magnetic drive end 48. There is no air gap in between, and it passes through the entire coil assembly 37. The fourth closed magnetic circuit originates from the first magnetic drive end 48, passes through the fourth attraction part 64, the intersecting portion 59 of the second armature 58, the second magnetic pole 56 of the second permanent magnet 53, the first magnetic pole 55 of the second permanent magnet 53, the second attraction part 62, the second magnetic drive end 49, the second yoke 47, the iron core 43, and the first yoke 46, returning to the first magnetic drive end 48 without any air gaps and passing through the entire coil assembly 37. Therefore, when the armature assembly 38 has just moved to the second position, due to the existence of the third and fourth closed magnetic circuits and the superposition effect between them, a greater magnetic attraction is generated between the first magnetic drive end 48 and the fourth attraction part 64, and between the second magnetic drive end 49 and the second attraction part 62.

[0106] Figure 15 This illustration shows the state of the magnetic circuit portion 3 when the armature assembly 38 in the second position is in the magnetic holding state. For example... Figure 15 As shown, when the first pulse electrical signal disappears, the first magnetic field disappears, 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 aforementioned third closed magnetic circuit and fourth closed magnetic circuit still exist. The third closed magnetic circuit can be considered to originate from the first magnetic pole 55 of the first permanent magnet 52, and its path is... Figure 14 The path of the third closed magnetic circuit shown is the same; the fourth closed magnetic circuit can be considered to start from the first magnetic pole 55 of the second permanent magnet 53, and its path is the same as... Figure 14 The path of the fourth closed magnetic circuit shown is the same. The third closed magnetic circuit and the fourth closed magnetic circuit are superimposed on each other, so that a greater magnetic attraction is generated between the fourth attraction part 64 and the first magnetic drive end 48 and between the second attraction part 62 and the second magnetic drive end 49, and the armature assembly 38 is held in the second position relative to the coil assembly 37.

[0107] Figure 16 This illustration shows the state of the magnetic circuit portion 3 when the coil assembly 37 in this embodiment has just received the second pulse electrical signal. (As shown...) Figure 16As shown, at this time, the coil winding 41 is excited by the second pulse electrical signal to generate a second magnetic field, causing the first magnetic drive end 48 to temporarily have an S pole polarity and the second magnetic drive end 49 to temporarily have an N pole polarity. Since the first magnetic drive end 48 and the fourth attraction part 64 have the same polarity (S pole), the first magnetic drive end 48 generates a magnetic repulsion force on the fourth attraction part 64; since the second magnetic drive end 49 and the second attraction part 62 have the same polarity (N pole), the second magnetic drive end 49 generates a magnetic repulsion force on the second attraction part 62. Furthermore, the magnetic circuit section 3 also forms two driving magnetic circuits at this time, namely the third driving magnetic circuit and the fourth driving magnetic circuit. The third driving magnetic circuit originates from the second magnetic drive end 49, passes through the travel air gap, the third attraction part 63, the intersecting portion 59 of the second armature 58, the second magnetic pole 56 of the first permanent magnet 52, the first magnetic pole 55 of the first permanent magnet 52, the first attraction part 61, the travel air gap, the first magnetic drive end 48, the first yoke 46, the iron core 43, and the second yoke 47, and returns to the second magnetic drive end 49. It has only two travel air gaps in between and passes through the entire coil assembly 37. The fourth driving magnetic circuit originates from the second magnetic drive end 49, passes through the travel air gap, the third attraction part 63, the second magnetic pole 56 of the second permanent magnet 53, the first magnetic pole 55 of the second permanent magnet 53, the intersecting portion 59 of the first armature 57, the first attraction part 61, the travel air gap, the first magnetic drive end 48, the first yoke 46, the iron core 43, and the second yoke 47, and returns to the second magnetic drive end 49. It also has only two travel air gaps in between and passes through the entire coil assembly 37. Therefore, when the coil assembly 37 receives the second pulse electrical signal, not only does the first magnetic drive end 48 exert a magnetic repulsive force on the fourth attraction part 64, and the second magnetic drive end 49 exert a magnetic repulsive force on the second attraction part 62, but also, due to the existence of the third driving magnetic circuit and the fourth driving push circuit, and the superposition effect between the two, the first magnetic drive end 48 generates a magnetic attraction force on the first attraction part 61, and the second magnetic drive end 49 generates a magnetic attraction force on the third attraction part 63, so that the coil assembly 37 can form a stronger driving force on the armature assembly 38, pushing the armature assembly 38 from the second position to the first position along the disconnection direction X2.

[0108] Figure 17 This illustration shows the state of the magnetic circuit portion 3 when the armature assembly 38 is driven by the coil assembly 37 to move along the disconnection direction X2 to the first position. For example... Figure 17 As shown, when the armature assembly 38 has just moved to the first position, the second pulse electrical signal and the second magnetic field have not yet disappeared. The first magnetic drive end 48 still temporarily has the S pole polarity, and the second magnetic drive end 49 still temporarily has the S pole polarity. At this time, the magnetic circuit part 3 still exists. Figure 12 The first and second closed magnetic circuits are shown, wherein the first closed magnetic circuit can be considered to originate from the second magnetic drive end 49, and its path is similar to... Figure 12The path of the first closed magnetic loop shown is the same; the second closed magnetic loop can be considered to start from the second magnetic drive end 49, and its path is the same as... Figure 12 The path of the second closed magnetic circuit shown is the same. Therefore, when the armature assembly 38 just moves to the first position, due to the existence of the first closed magnetic circuit and the second closed magnetic circuit, and the superposition effect between the two, a greater magnetic attraction force is generated between the first magnetic drive end 48 and the first attraction part 61, and between the second magnetic drive end 49 and the third attraction part 63.

[0109] When the second pulse electrical signal disappears, the second magnetic field disappears, 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... Figure 12 As shown, it is in a magnetically held state in the first position.

[0110] See Figure 18 , Figure 18 The movable contact portion 4 in this embodiment is shown. For example... Figure 18 As shown, the movable contact part 4 includes a pusher 70, a connector 71, a movable contact assembly 72, a movable magnetic conductor assembly 73, an elastic support assembly 74, an elastic element 75, and a limiting element 76.

[0111] See Figure 19 , Figure 19 The pusher 70 and connector 71 in this embodiment are shown. Figure 19 As shown, in this embodiment, the armature assembly 38, the connector 71, and the moving spring 83 are fixedly connected to the pusher 70. Specifically, the armature assembly 38, the connector 71, and the moving spring 83 are integrally injection molded with the pusher 70 insert. The pusher 70 is made of plastic. The pusher 70 has a pusher body 77 and two second guide portions 78. The pusher body 77 has a receiving portion 79, a first insert portion 80, and a second insert portion 81. The receiving portion 79 is used to receive the armature assembly 38. The first insert portion 80 is used to receive the connector 71 and is located in front of the receiving portion 79 along the X-axis direction. The front surface of the first insert portion 78 has two connecting posts 82. The two connecting posts 82 are arranged along the Z-axis direction. Each connecting post 82 extends forward from the front surface of the first insert portion 80 along the X-axis direction. The second insert portion 81 is used to receive the moving spring 83 and is located behind the receiving portion 79 along the X-axis direction. The moving spring 83 is part of the micro switch 5, which will be described in detail later. Two second guide portions 78 extend from the push body 77 away from each other along the Z-axis direction. In this embodiment, the two second guide portions 78 extend from the upper and lower surfaces of the receiving portion 79 away from each other along the Z-axis direction, respectively, and are disposed at the middle of the receiving portion 79 along the Y-axis direction and the middle of the receiving portion 79 along the X-axis direction. The projection of each second guide portion 78 onto a first projection plane perpendicular to the Z-axis direction is circular.

[0112] like Figure 19 As shown, the connector 71 extends along the Z-axis direction, and its two ends along the Z-axis direction extend out of the first insert portion 80 to form two connecting ends 84.

[0113] See Figure 20 , Figure 20 The movable contact assembly 72, movable magnetic conductor assembly 73, elastic support assembly 74, and elastic element 75 of this embodiment are shown. The movable contact assembly 72 is driven along the X-axis direction by the armature assembly 38 and the pusher 70, which is integrally molded with the armature assembly 38 insert, to close or open with the stationary contact assembly 7, thereby correspondingly connecting or disconnecting the electrical connection between the two stationary contacts 19. Figure 20 As shown, the moving contact group 72 includes two moving contacts 85. The two moving contacts 85 are arranged along the Z-axis. Each moving contact 85 is provided with a flow bridge 86 and two moving contacts 87. The flow bridge 86 extends along the Y-axis. The two moving contacts 87 are arranged along the Y-axis and fixed to the flow bridge 86. Each moving contact 87 faces forward along the X-axis and is positioned opposite to the corresponding stationary contact 20. Specifically, the moving contact 87 opposite to the first stationary contact 25 along the X-axis is the first moving contact 88; the moving contact 87 opposite to the second stationary contact 33 along the X-axis is the second moving contact 89. When the moving contact group 72 is closed with the stationary contact group 7, each first moving contact 88 abuts against the corresponding first stationary contact 25 along the X-axis, and each second moving contact 89 abuts against the corresponding second stationary contact 33 along the X-axis. The first stationary contact 22 and the second stationary contact 23 are connected through the two moving contacts 85. When the moving contact group 72 is disconnected from the stationary contact group 7, each first moving contact 88 moves away from the corresponding first stationary contact 25 along the X-axis direction, and each second moving contact 89 moves away from the corresponding second stationary contact 33 along the X-axis direction, and the first stationary contact 22 and the second stationary contact 23 are turned off.

[0114] The moving magnetic conductor assembly 73 is fixed relative to the moving contact assembly 72 and is positioned relative to the stationary magnetic conductor 8 along the X-axis. For example... Figure 20 As shown, the moving magnetic conductor assembly 73 includes a moving magnetic conductor 90, which is correspondingly disposed with the moving contact 85. In this embodiment, there are two moving magnetic conductors 90, which are arranged along the Z-axis. Each moving magnetic conductor 90 has a magnetic conductor body 91 and two extensions 92. The magnetic conductor body 91 extends along the Z-axis and is fixed to the back side of the current bridge 86, where "back side" refers to the surface away from the stationary contact assembly 7. The extensions 92 extend forward along the X-axis from both ends of the magnetic conductor body 91 along the Z-axis.

[0115] The elastic support assembly 74 is mounted on the pusher 70 and located between the pusher 70 and the moving contact assembly 72 along the X-axis. For example... Figure 20As shown, the device includes two elastic supports 93 arranged along the Z-axis in this embodiment. Each elastic support 93 has a frame 94 and a first elastic portion 95. The frame 94 is fixed relative to the pusher 70. Specifically, the frame 94 has two first connecting holes 96 corresponding to the connecting posts 82, through which the connecting posts 82 pass, allowing the frame 94 to be positioned relative to the pusher 70 in any direction perpendicular to the X-axis. The first elastic portion 95 is adapted to elastically deform along the X-axis. The first elastic portion 95 is correspondingly provided with a moving contact 85, which 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 which is integrally connected to the frame 94, and the other end is fixedly connected to the flow bridge 86. The position where the first elastic arm 97 is fixed to the flow bridge 86 is located on the back of the corresponding moving contact 87.

[0116] The elastic element 75 is adapted to abut against the receiving element 6. The elastic element 75 deforms and stores energy when the pushing element 70 moves along the disconnecting direction X2, and releases energy by restoring its deformation when the pushing element 70 moves along the closing direction X1. For example... Figure 20 As shown, the elastic member 75 has a main body 98 and a second elastic part 99. The main body 98 is plate-shaped perpendicular to the X-axis direction and is fixed relative to the pusher 70. Specifically, the main body 98 has two second connecting holes 100 corresponding to the connecting post 82. The connecting post 82 passes through the second connecting holes 100 so that the main body 98 can be positioned relative to the pusher 70 in any direction perpendicular to the X-axis direction. The main body 98 is located between the frame 94 and the first insert part 80 along the X-axis direction. The second elastic part 99 is adapted to elastically deform along the X-axis direction. The second elastic part 99 is correspondingly provided with the moving contact 85 in the moving contact assembly 72. The second elastic part 99 includes two second elastic arms 101. One end of each of the two second elastic arms 101 is integrally connected to the main body 98, and the other end extends to both sides in the Y-axis direction and is adapted to abut against the corresponding abutment surface 18.

[0117] See Figure 21 and Figure 22 , Figure 21 and Figure 22 The limiting member 76 in this embodiment is shown. The limiting member 76 is fixed relative to the pushing member 70 and abuts against the moving contact group 72 rearward when the moving contact group 72 is disconnected from the stationary contact group 7, thereby limiting the distance between the moving contact group 72 and the stationary contact group 7. Figure 21 and Figure 22As shown, the limiting member 76 includes a limiting body 102 and two first guide portions 103. The limiting body 102 is made of metal. The limiting body 102 includes 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 assembly 72. The limiting portion 104 extends along the Z-axis and has three clearance holes 106, which allow the extension portions 92 of each movable magnetic conductor 90 to extend forward along the X-axis. The two connecting portions 105 extend rearward from both ends of the limiting portion 104 along the Z-axis. The connecting portions 105 have mounting holes 107 that mate with and are fixed to the connecting end 84, and bending portions 108 for mounting the first guide portions 103. The bending portions 108 extend from the front end of the connecting portion 105 along the closing direction X1 along the Z-axis. The extending directions of the bending portions 108 of the two connecting portions 105 are opposite to each other. Two first guide portions 103 are arranged along the Z-axis and located opposite each other at the ends of the two bent portions 108 along the Z-axis. The first guide portions 103 are made of plastic. The two first guide portions 103 are integrally injection molded with the limiting body 102 insert, and the first guide portions 103 wrap around the corresponding bent portions 108. In other embodiments, the first guide portions 103 can also be fixed to the limiting body 102 by adhesive or screw. In this embodiment, the first guide portion 103 is located at the front end of the limiting member 76 along the closing direction X1 along the X-axis and at the middle of the limiting member 76 along the Y-axis. In this embodiment, both the first guide portion 103 and the second guide portion 78 are guide portions 109. The guide portion 109 is used to guide the movement of the moving contact portion 4 along the X-axis.

[0118] See Figure 1 , Figure 1 The microswitch 5 in this embodiment is shown. For example... Figure 1 As shown, in this embodiment, the micro switch 5 includes a moving spring 83 and two stationary terminals 110. The stationary terminals 110 extend along the Z-axis and protrude from the receiving member 6. The two stationary terminals 110 are arranged along the Y-axis and located between the moving spring 83 and the coil winding 41 along the X-axis. The two stationary terminals 110 are used for electrical connection with the relay status sensing circuit. The moving spring 83 is fixedly connected to the pusher member 70. In this embodiment, the moving spring 83 and the pusher member 70 are integrally injection molded and located in the second insert portion 81. The moving spring 83 has two abutting arms that extend away from each other along the Y-axis. The moving spring 83 is driven by the pusher member 70 to move along the X-axis so that the abutting arms abut against or move away from the two stationary terminals 110. In other embodiments, when the moving spring 83 is not fixedly connected to the pusher member 70, the moving spring 83 can also move away from the two stationary terminals based on its own elastic restoring force.

[0119] See Figure 23 and Figure 26 , Figure 23 and Figure 26 The internal structure of relay 1 in this embodiment is shown.

[0120] like Figure 23 As shown, in this embodiment, the magnetic circuit portion 3 and the moving contact portion 4 are installed in the cavity 12. Two stationary contacts 19 of the stationary contact group 7 are fixed to the receiving member 6, with the stationary contact points 20 of the two stationary contacts 19 arranged along the Y-axis direction, and the connecting terminals 21 of the two stationary contacts 19 arranged along the X-axis direction and extending out of the receiving member 6 along the Y-axis direction. The second connecting terminal 36 of the second stationary contact 23 is located along the X-axis direction between each stationary contact point 20 and the coil winding 41. The eighth current-passing portion 34 is located along the Y-axis direction outside the moving contact group 72, and also outside the right-side barrier member 9. The stationary magnetic conductor 8 is inserted into the stationary magnetic conductor slot 16 and fixed to the receiving member 6. The first stationary contact point 25 and the second stationary contact point 33 are located on both sides of the stationary magnetic conductor 8 along the Y-axis direction. The projections of all stationary contacts 20 adapted to contact the moving contact assembly 72 onto the second projection plane perpendicular to the Y-axis are all located within the projection of the stationary magnet 8 on the second projection plane, and the surface of the stationary magnet 8 facing the moving magnet assembly 73 is closer to the moving magnet assembly 73 than all stationary contacts 20 along the X-axis. The second surface S2 is closer to the moving magnet assembly 73 than the first surface S1. The stationary magnet 8 and the moving magnet assembly 73 are arranged opposite each other along the X-axis. The stationary magnet 8 is located between the third flow section 27 and the moving magnet assembly 73 along the X-axis. In other embodiments, the stationary magnet 8 can also be fixed relative to the limiting member 76, achieving the same effect. Two blocking members 9 are respectively inserted into the corresponding blocking member slots 17 and fixed to the receiving member 6, so that the two blocking members 9 are located outside the stationary contact assembly 7 along the Y-axis. The first magnetic drive end 48 is located between the first attracting part 61 and the fourth attracting part 64 along the X-axis. The second magnetic drive end 49 is located between the third attracting part 63 and the second attracting part 62 along the X-axis. Each first moving contact 88 and its corresponding first stationary contact 25 are arranged opposite each other along the X-axis, and each second moving contact 89 and its corresponding second stationary contact 33 are arranged opposite each other along the X-axis. The limiting member 76 is fixedly connected to the connecting member 71 to be fixed relative to the pushing member 70. The limiting member 76 is adapted to abut against the moving contact group 72 along the disconnection direction X2. The elastic member 75 is adapted to abut against the receiving member 6. The first guide part 103 and the second guide part 78 are both centrally located between the first moving contact 88 and the second moving contact 89 along the Y-axis.

[0121] like Figure 26As shown, the housing 10 and the cover 11 are fixedly connected to form the receiving member 6. The shielding cover 39 is placed inside the receiving member 6. The first guide portion 103, located at the upper part along the Z-axis, extends into the first groove section 14 of the slide groove 13 of the cover 11 along the Z-axis. The second guide portion 78, located at the upper part along the Z-axis, extends into the second groove section 15 of the slide groove 13 of the cover 11 along the Z-axis. The first guide portion 103, located at the lower part along the Z-axis, extends into the first groove section 14 of the slide groove 13 of the housing 10 along the Z-axis. The second guide portion 78, located at the lower part along the Z-axis, extends into the second groove section 15 of the slide groove 13 of the housing 10 along the Z-axis. Thus, each guide portion 109 extends into the corresponding slide groove 13 along the Z-axis and slides with the slide groove 13 along the X-axis. In this embodiment, the first mating clearance between the first guide portion 103 and the first groove segment 14 along the Y-axis direction is different from the second mating clearance between the second guide portion 78 and the second groove segment 15 along the Y-axis direction. Specifically, the first mating clearance is smaller than the second mating clearance. In this embodiment, the guide portion 109 is disposed on the movable contact portion 4, and the slide groove 13 is disposed on the receiving member 13. In other embodiments, the guide portion 109 may be disposed on the receiving member 6, and the slide groove 13 may be disposed on the movable contact portion 4.

[0122] See Figure 23 , Figure 23 The state of relay 1 is shown when the armature assembly 38 is in the first position. (Example) Figure 23 As shown, when the armature assembly 38 is in the first position, the moving contact group 72 and the stationary contact group 7 are disconnected along the disconnection direction X2, the relay 1 is in the off state, and the external circuit is turned off. At this time, the elastic element 75 abuts against the contact surface 18 along the disconnection direction X2, causing the elastic element 75 to deform and store energy. The limiting member 76 abuts against the moving contact group 72 along the disconnection direction X2, and each moving contact 85 presses against the elastic support group 74, fixing the frame 94 of the elastic support 93 and the body 98 of the elastic element 75 relative to the pushing member 70 along the X-axis direction, thereby fixing the frame 94 and the elastic element 75 relative to the pushing member 70. The moving spring 83 abuts against the two stationary contact terminals 110, and the relay state sensing circuit senses that the relay 1 is in the off state.

[0123] When the coil winding 41 receives the first pulse electrical signal, the coil assembly 37 drives the armature assembly 38 to move along the closing direction X1. The armature assembly 38 then drives the moving contact portion 4 to move along the closing direction X1. During this process, the guide portion 109 slides in the groove 13 along the closing direction X1 and guides the moving contact portion 4. The elastic element 75 recovers its deformation and releases energy. When the moving contact 87 abuts against the corresponding stationary contact 20, the pusher 70 enters overtravel mode. At this time, the elastic support group 74 deforms and stores energy until the armature assembly 38 reaches the second position, at which point the moving contact group 72 and the stationary contact group 7 close.

[0124] See Figure 24 and Figure 26 , Figure 24 and Figure 26 The state of relay 1 is shown when the armature assembly 38 is in the second position. (Example) Figure 24 As shown, when the armature assembly 38 is in the second position, the moving contact group 72 and the stationary contact group 7 are closed along the closing direction X1, the relay 1 is in the conducting state, and the external circuit is connected. The third current-passing part 27 of the first stationary contact 22 forms a reverse current part, and the current-passing direction of the reverse current part is opposite to the current-passing direction of the current-passing bridge 86. The eighth current-passing part 34 of the second stationary contact 23 forms a cross-current part, and the current-passing direction of the cross-current part is the disconnection direction X2 when the current-passing direction of the current-passing bridge 86 is to the right along the Y-axis and the cross-current part is located on the right side of the current-passing bridge 86. The magnetic field formed by the current passing through the cross-current part acts on the current-passing bridge 86 through which current flows, causing the current-passing bridge 86 to be subjected to a first magnetic force F1 toward the stationary contact group 7. The elastic support group 74 deforms and stores energy along the X-axis. The elastic member 75 moves away from the contact surface 18 along the X-axis. The moving spring 83 moves away from the two stationary contact terminals 110, and the relay state sensing circuit senses that the relay 1 is in the conducting state. Figure 26 As shown, the current passing through the overcurrent bridge 86 forms an anti-short-circuit magnetic loop M1 between the moving magnetic conductor 90 and the stationary magnetic conductor 8. In this embodiment, there are two anti-short-circuit magnetic loops M1. Simultaneously, the reverse magnetic field M2 formed by the current passing through the reverse current section formed by the third overcurrent section 27 creates magnetic field lines on one side of the stationary magnetic conductor 8 that are in the same direction as the magnetic field lines created by the anti-short-circuit magnetic loop M1 on one side of the stationary magnetic conductor 8.

[0125] When the coil winding 41 receives the second pulse electrical signal, the coil assembly 37 drives the armature assembly 38 to move along the disconnection direction X2. The armature assembly 38 then drives the moving contact portion 4 to move along the disconnection direction X2. During this process, the guide portion 109 slides in the groove 13 along the disconnection direction X2 and guides the moving contact portion 4. The elastic support assembly 74 recovers its deformation and releases energy. The elastic element 75 deforms and stores energy after contacting the contact surface 18, until it returns to its original state. Figure 23 The armature assembly 38 shown is in the first position.

[0126] In this embodiment, the stationary contacts 20 of the two stationary contacts 19 are arranged along the Y-axis, and the moving contact group 72 is closed or opened with the stationary contact group 7 along the X-axis to correspondingly connect or disconnect the electrical connection between the two stationary contacts 19. With this structure, the safe distance between the moving contact group 72 and the stationary contact group 7 is twice the actual distance between the moving contact 87 and the corresponding stationary contact 20 along the X-axis. Therefore, the relay 1 has higher safety, stronger load capacity, and is more conducive to improving the safe distance between the moving contact group 72 and the stationary contact group 7.

[0127] In this embodiment, the stationary contacts 20 of the two stationary contacts 19 are arranged along the Y-axis, and the connection terminals 21 of the two stationary contacts 19 are arranged along the X-axis and extend out of the receiving member 6 along the Y-axis. Compared to the stationary contacts 19 extending out of the receiving member 6 along the movement direction of the moving contact group 72, the size in the X-axis direction is shortened, effectively utilizing the space in the Y-axis direction. Therefore, the size of the relay 1 along the X-axis and the size along the Y-axis are well balanced, creating more favorable conditions for increasing the safe distance between the moving contact group 72 and the stationary contact group 7 in a limited space.

[0128] In this embodiment, while retaining the coil assembly of the oscillating magnetic latching relay, the two armatures 51 fixed to the permanent magnet 50 in the armature assembly 38 are changed from being arranged in parallel to being crossed, allowing the armature assembly 38 to change from oscillating relative to the coil assembly 37 to linear motion relative to the coil assembly 37. Since the armature assembly 38 moves linearly relative to the coil assembly 37, there is no loss of the radial component of the oscillation stroke of the oscillating magnetic latching relay. Therefore, the space utilization of the relay 1 can be improved, creating more favorable conditions for increasing the safe distance between the moving contact group 72 and the stationary contact group 7 in a limited space.

[0129] In this embodiment, since the axis of the coil winding 41 extends along the Y-axis and the two magnetic drive ends 45 are arranged along the Y-axis, and the linear motion direction of the armature assembly 38 is perpendicular to the Y-axis direction, this layout is beneficial to make room for the movement of the armature assembly 38 and the moving contact group 72 along the X-axis. Furthermore, at this time, the size of the receiving member 6 along the Y-axis is mainly determined by the length of the coil assembly 37 along the Y-axis. Therefore, the relay 1 will not require a long length in one direction (whether it is the X-axis direction or the Y-axis direction), which makes it easier for the relay 1 to adapt to the limited space. This creates more favorable conditions for increasing the safe distance between the moving contact group 72 and the stationary contact group 7 in the limited space.

[0130] In this embodiment, a push rod and a moving iron core are not required inside the coil winding 41. Therefore, the support shaft diameter of the coil frame 40 is smaller, and the inner diameter of the coil winding 41 is smaller. Compared with the direct-acting magnetic latching relay in the prior art, when the space occupied by the coil assembly 37 is the same, the magnetic driving force generated by the coil winding 41 is stronger, and the pushing force on the armature assembly 38 is greater. This can create more favorable conditions for increasing the safe distance between the moving contact group 72 and the stationary contact group 7 in a limited space.

[0131] In this embodiment, the two engaging portions 60 of the armature assembly 38 can form a first part of a magnetic circuit without any air gap through the permanent magnet 50 and the two armatures 51, while the two magnetic drive ends 45 of the coil assembly 37 can also form a second part of a magnetic circuit that runs through the entire coil assembly 37. In the magnetic holding state, the engaging portions 60 engage the corresponding magnetic drive ends 45 along the X-axis, so that the first part and the second part can form a complete magnetic circuit without air gap. Therefore, the magnetic loss is small and the magnetic efficiency is higher. Without increasing the power consumption of the coil assembly 37, it is beneficial to increase the movement stroke of the moving contact group 72. And when the magnetic driving force is equal, it can reduce the power consumption required for the coil assembly 37 to achieve magnetic drive, which is beneficial to making the size of the coil assembly 37 smaller. Therefore, it can create more favorable conditions for increasing the safe distance between the moving contact group 72 and the stationary contact group 7 in a limited space.

[0132] In this embodiment, since the second part of the magnetic circuit passes through the entire coil assembly 37, the magnetic force during magnetic holding is greater than that of the direct-acting magnetic latching relay in the prior art. Especially when the relay 1 is subjected to a fault current impact, the armature assembly 38 is less likely to disengage from the magnetic holding state and move. This helps to prevent the moving contact group 72 from disengaging from the stationary contact group 7 due to the fault current, which would cause destructive arcing.

[0133] In this embodiment, when the armature assembly 38 is in the magnetically held state in the first position, and the coil assembly 37 is excited by a pulsed electrical signal to reverse the polarity temporarily formed by the two magnetic drive ends 45, not only do the two magnetic drive ends 45 generate magnetic repulsion on the first attraction part 61 and the third attraction part 63, but also the fourth attraction part 64 and the second attraction part 62 form a first part of a push magnetic circuit without air gap through the armature assembly 38, and the two magnetic drive ends 45 form a second part of a push magnetic circuit that runs through the entire coil assembly 37 through the coil assembly 37. The first part and the second part of the push magnetic circuit constitute a complete push magnetic circuit. This push magnetic circuit only has the necessary stroke air gap and no other air gaps, so the magnetic efficiency is higher, and the magnetic driving force exerted by the two magnetic drive ends 45 on the armature assembly 38 is stronger under the same power consumption, which is more conducive to increasing the safety distance between the moving contact group 72 and the stationary contact group 7. Similarly, when the armature assembly 38 is in the magnetically held state in the second position, and the coil assembly 37 is excited by a pulsed electrical signal to reverse the polarity temporarily formed by the two magnetic drive ends 45, it also has the same technical effect.

[0134] In this embodiment, since the first engaging part 61 and the fourth engaging part 64 are arranged along the X-axis direction, the third engaging part 63 and the second engaging part 62 are arranged along the X-axis direction, the first engaging part 61 and the third engaging part 63 are arranged along the Y-axis direction, and the fourth engaging part 64 and the second engaging part 62 are arranged along the Y-axis direction, the four engaging parts 60 of the armature assembly 38 are respectively located at the four vertices of the rectangle on the first projection plane. This facilitates the adjustment of the dimensions of the armature assembly 38 along the X-axis and Y-axis directions, creating more favorable conditions for increasing the safe distance between the moving contact group 72 and the stationary contact group 7 in a limited space.

[0135] In this embodiment, permanent magnets 50 are arranged on both sides of the intersecting portion 59 along the Y-axis, and the two magnetic poles 54 of the permanent magnets 50 are arranged along the X-axis. Without increasing the size of the armature assembly 38 along the X-axis and Z-axis, the space occupied by the armature assembly 38 is fully utilized to increase the magnetic force between the magnetic drive end 45 and the armature assembly 38, which is more conducive to increasing the safety distance between the moving contact group 72 and the stationary contact group 7. Since each permanent magnet 50 is connected together by two armatures 51, the difference in the strength of the magnetic field of each permanent magnet 50 is effectively weakened by the two armatures 51. The magnetic driving force between the attraction portion 60 on both sides and the magnetic drive end 45 can be more balanced along the X-axis, so the relay 1 is less prone to jamming and has a longer lifespan.

[0136] In this embodiment, the projection of the armature assembly 38 on the first projection plane is mirror-symmetrical along a plane of symmetry perpendicular to the Y-axis. This makes the magnetic field strength of the armature assembly 38 on both sides along the Y-axis direction more consistent, and the center of gravity is more likely to be kept on the plane of symmetry. The linear motion of the armature assembly 38 is less likely to be skewed, the relay 1 is less likely to jam and has a longer lifespan, and the magnetic driving force is less likely to be wasted on useless work. This can create more favorable conditions for increasing the safe distance between the moving contact group 72 and the stationary contact group 7 in a limited space.

[0137] In this embodiment, the two moving contacts 87 of the moving contact 85 are arranged along the Y-axis and fixed to the overcurrent bridge 86 extending along the Y-axis, which enables the current passing through the overcurrent bridge 86 to flow along the Y-axis, facilitating the formation of a magnetic circuit for short-circuit protection. The short-circuit protection magnetic circuit is used to enable the moving contact group 72 to close more reliably with the stationary contact group 7. When the relay 1 is subjected to a large fault current, it helps to prevent the moving contact group 72 from detaching from the stationary contact group 7, thereby avoiding damage to the relay 1 caused by destructive arcing.

[0138] In this embodiment, the moving contact group 72 contains two or more moving contacts 85, each arranged along the Z-axis. Therefore, when the moving contact group 72 and the stationary contact group 7 are closed, the moving contacts 85 are connected in parallel, which increases the load capacity of the relay 1 and reduces the contact resistance between the moving contact 87 and the stationary contact 20. Simultaneously, by combining the technology of the current bridge 86 extending along the Y-axis and the technology of the moving contact 85 moving along the X-axis, the relay 1 can make fuller use of space in all directions, resulting in a more compact structure and creating more favorable conditions for increasing the safe distance between the moving contact group 72 and the stationary contact group 7 within a limited space.

[0139] In this embodiment, at least one stationary contact 19 is positioned between the stationary contact 20 and the coil winding 41 along the X-axis direction, increasing the distance between the two connection terminals 21 along the X-axis direction, making it less prone to short circuits between the two stationary contacts 19, and meeting the requirements for installing external current transformers.

[0140] In this embodiment, the eighth current-passing portion 34 of the second stationary contact 23 forms a current-crossing portion. The current-crossing portion is located outside the moving contact group 72 along the Y-axis direction and is connected to the connection terminal 21 along the disconnection direction. The magnetic field generated by the current in the current-crossing portion acts on the current-passing bridge 86 in the Y-axis direction, generating a magnetic force on the current-passing bridge 86 toward the stationary contact group 7. This magnetic force enables the moving contact group 72 to close more reliably with the stationary contact group 7. Since this magnetic force increases with the increase of current, it helps to prevent the moving contact group 72 from detaching from the stationary contact group 7 when the relay 1 is subjected to a large fault current, thereby avoiding destructive arcing that could damage the relay 1.

[0141] In this embodiment, the moving magnetic conductor group 73 and the stationary magnetic conductor 8 form an anti-short-circuit magnetic circuit M1 when the current flows through the overcurrent bridge 86 along the Y-axis. This causes the moving magnetic conductor group 73 and the moving contact group 72 to be subjected to a magnetic force along the closing direction, enabling the moving contact group 72 to close more reliably with the stationary contact group 7. Since this magnetic force increases with the increase of current, it helps to prevent the moving contact group 72 from detaching from the stationary contact group 7 when the relay 1 is subjected to a large fault current, thereby avoiding destructive arcing that could damage the relay 1.

[0142] In this embodiment, the moving magnetic conductor 90 is correspondingly arranged with the moving contact 85, thus forming an anti-short-circuit magnetic circuit M1 around each moving contact 85, making it difficult for each moving contact 85 to detach from the stationary contact group 7. The magnetic conductor body 91 is fixed to the back of the current bridge 86, which allows most of the magnetic field generated by the current in the current bridge 86 to be confined in the anti-short-circuit magnetic circuit, improving magnetic efficiency. The extension 92 extends from the magnetic conductor body 91 along the closing direction, so when the moving contact group 72 is closed with the stationary contact group 7, the air gap between the moving magnetic conductor 90 and the stationary magnetic conductor 8 is smaller, the magnetic resistance of the anti-short-circuit magnetic circuit M1 is smaller, and the moving contact group 72 is less likely to detach from the stationary contact group 7. Therefore, the moving contact group 72 can close more reliably with the stationary contact group 7, which helps to prevent the moving contact group 72 from detaching 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.

[0143] In this embodiment, the static magnet 8 is fixed to the receiving member 6, making it easier to install the static magnet 8.

[0144] In this embodiment, the stationary contact points 20 of the two stationary contacts 19 are located on both sides of the stationary magnetic conductor 8 along the Y-axis direction, which makes the magnetic force exerted on the moving contact group 72 by the anti-short-circuit magnetic circuit M1 formed by the stationary magnetic conductor 8 and the moving magnetic conductor group 73 more balanced along the Y-axis direction, and the two moving contacts 87 are not easy to detach from the corresponding stationary contact points 20.

[0145] In this embodiment, the current flow direction of the reverse current section is opposite to that of the current flow direction of the current bridge 86, and the stationary magnetic conductor 8 is located between the reverse current section and the moving magnetic conductor group 73 along the X-axis. Therefore, the magnetic field generated by the reverse current section due to the current has the same magnetic field line direction on the side where the stationary magnetic conductor 8 is located as the short-circuit magnetic circuit M1 forms the same magnetic field line direction on the side where the stationary magnetic conductor 8 is located. This strengthens the magnetic field strength of the stationary magnetic conductor 8 and makes the magnetic force formed between the stationary magnetic conductor 8 and the moving magnetic conductor group 73 stronger. When the relay 1 is subjected to a large fault current, the moving contact group 72 is less likely to detach from the stationary contact group 7, thereby avoiding destructive arcing that could damage the relay 1.

[0146] In this embodiment, the second surface S2 is closer to the moving magnetic conductor group 73 along the X-axis than the first surface S1. Therefore, the stationary magnetic conductor 8 is not embedded between the two stationary contacts 19 except for the stationary contact 20 along the Y-axis, which increases the creepage distance between the stationary contact 19 and the stationary magnetic conductor 8 and improves the withstand voltage capability of the relay 1. At the same time, it also helps to reduce the distance between the two stationary contacts 20 along the Y-axis and the size of the receiving member 6 along the Y-axis, creating more favorable conditions for increasing the safe distance between the moving contact group 72 and the stationary contact group 7 in a limited space.

[0147] In this embodiment, the projections of all stationary contacts 20 suitable for contacting the moving contact group 72 on the second projection plane perpendicular to the Y-axis are all located within the projection of the stationary magnet 8 on the second projection plane, and the surface of the stationary magnet 8 facing the moving magnet group 73 is closer to the moving magnet group 73 than all stationary contacts 20 along the X-axis. Therefore, when the moving contact group 72 breaks the arc from the stationary contact group 7, the magnetic field generated by the arcs on both sides is concentrated on the stationary magnet 8, making it difficult for the arc to propagate to both sides along the Y-axis. This reduces the erosion of the surrounding housing 6 caused by the arc escaping between the moving contact 87 and the stationary contact 20, ensuring the service life of the relay 1. Based on this, the distance between the two stationary contacts 20 along the Y-axis can be designed to be closer, which is beneficial to reducing the size of the housing 6 along the Y-axis and creating more favorable conditions for increasing the safe distance between the moving contact group 72 and the stationary contact group 7 in a limited space.

[0148] In this embodiment, two barrier members 9 are fixed to the receiving member 6 and located outside the stationary contact group 7 along the Y-axis direction. Each barrier member 9 extends along the X-axis direction so that the projection of the portion of each stationary contact 20 suitable for contacting the moving contact 87 on the second projection plane perpendicular to the Y-axis direction is located within the projection of each barrier member 9 on the second projection plane. Therefore, when the moving contact group 72 breaks the arc from the stationary contact group 7, the arc will not be conducted to the two side walls of the receiving member 6 along the Y-axis direction, ensuring the insulation performance of the receiving member 6. The barrier members 9 are made of high-temperature resistant insulating material, which can prevent the heat of the arc from damaging the barrier members 9 when the load is large and the arc generates a lot of heat, thus avoiding damage to the barrier members 9 and improving the load capacity of the relay 1.

[0149] In this embodiment, the elastic support assembly 74 is disposed between the pusher 70 and the moving contact assembly 72. After the pusher 70 has overtraveled, it provides an elastic force to the moving contact assembly 72 along the closing direction X1, enabling the moving contact assembly 72 to close more reliably with the stationary contact assembly 7. When the relay 1 is subjected to a large fault current, the moving contact assembly 72 is less likely to detach from the stationary contact assembly 7, thereby avoiding destructive arcing that could damage the relay 1. The elastic support assembly 74 can also generate additional repulsive force when the moving contact assembly 72 disconnects from the stationary contact assembly 7, helping the moving contact 85 to disconnect from the stationary contact assembly 7.

[0150] In this embodiment, by setting a limiting member 76, it can be ensured that when the moving contact group 72 is disconnected from the stationary contact group 7, the distance between the moving contact group 72 and the stationary contact group 7 meets the design requirements.

[0151] In this embodiment, the armature assembly 38 and the pusher 70 are integrally injection molded, which avoids possible errors during the assembly of the armature assembly 38 and the pusher 70, and also makes the pusher 70 and the armature assembly 38 more integrated with fewer parts, which is conducive to making full use of the limited space.

[0152] In this embodiment, the connector 71 and the pusher 70 are integrally injection molded, making it easier for the limiting member 76 to be fixed relative to the pusher 70. The limiting member 76 is also more rigid, providing a better limiting effect on the moving contact group 72 and saving the size of the relay 1 along the Y-axis. The two ends of the connector 71 along the Z-axis extend out of the pusher 70 to form connection ends 84 that are fixed to the limiting member 76. This saves the size of the relay 1 along the Z-axis and creates more favorable conditions for increasing the safe distance between the moving contact group 72 and the stationary contact group 7 in a limited space.

[0153] In this embodiment, the first elastic part 95 is correspondingly provided with the moving contact 85, and each moving contact 85 is fixedly connected to the corresponding first elastic part 95. Therefore, each moving contact 85 can adjust its posture by the relatively independent first elastic part 95, which is more conducive to the reliable closure of the two moving contacts 87 of the moving contact 85 with the corresponding stationary contacts 20.

[0154] In this embodiment, the first elastic part 95 includes two first elastic arms 97 fixedly connected to the flow bridge 86, which facilitates the free swinging of the moving contact 85 to adjust its posture. The two first elastic arms 97 are fixedly connected to the flow bridge 86 at the back of the corresponding moving contact 87, which allows the elastic force of the two first elastic arms 97 to act directly on the two moving contacts 87, and further ensures that the two moving contacts 87 reliably close with the corresponding stationary contact 20.

[0155] In this embodiment, the elastic element 75 stores energy due to deformation when the pusher 70 moves along the disconnection direction X2 and releases energy due to recovery deformation when the pusher 70 moves along the closing direction X1. This can better help the moving contact group 72 start from the disconnection position and move closer to the stationary contact group 7, which is beneficial to increasing the movement stroke of the moving contact group 72. Therefore, it is also beneficial to increase the safe distance between the moving contact group 72 and the stationary contact group 7.

[0156] In this embodiment, the main body 98 of the elastic element 75 is plate-shaped and fixed relative to the pusher 70, and the second elastic arm 101 extends to both sides in the Y-axis direction and is suitable for abutting the receiving member 6. This allows the elastic element 75 to occupy less space in the X-axis direction and has good elastic deformation capability. It avoids the increase in the size of the moving contact part 4 in the X-axis direction when using a spring as the elastic element 75 due to the compression length of the spring, which is beneficial to reducing the size of the relay 1 in the X-axis direction. Therefore, it can create more favorable conditions for increasing the safe distance between the moving contact group 72 and the stationary contact group 7 in a limited space.

[0157] In this embodiment, by setting a micro switch 5, the external relay status sensing circuit can know the on / off state of relay 1, which facilitates the management of relay 1.

[0158] In this embodiment, the stationary contact terminal 110 is located between the moving spring 83 and the coil winding 41 along the X-axis direction. This effectively utilizes the space between the pusher 70 and the coil winding 41, avoiding the increase in the size of the accommodating member 6 along the Y-axis direction when the stationary contact terminal 110 is located outside the winding assembly 37 along the Y-axis direction. This creates more favorable conditions for increasing the safe distance between the moving contact group 72 and the stationary contact group 7 within a limited space. The moving spring 83 is fixedly connected to the pusher 70, making the position and movement of the moving spring 83 more definite.

[0159] In this embodiment, by setting the shield 39, the magnetic field of the coil assembly 37 is compressed within the iron core 43 and the yoke 44, thereby increasing the magnetic field strength between the two magnetic drive ends 45. This is beneficial for improving magnetic efficiency and the driving force of the magnetic circuit part 3, and creates more favorable conditions for increasing the safe distance between the moving contact group 72 and the stationary contact group 7 in a limited space. At the same time, it can also prevent the magnetic circuit part 3 from being affected by external magnetic fields.

[0160] In this embodiment, the guide portion 109 extends into the slide groove 13 along the Z-axis direction to slide with the slide groove 13 along the X-axis direction. Since the extension direction of the sliding engagement portion of the guide portion 109 is perpendicular to the movement direction of the moving contact assembly 72, the sliding engagement portion of the guide portion 109 is much shorter than in the prior art, making it less prone to bending deformation and resulting in a better guiding effect. Based on this, the mating surface size of the guide portion 109 and the slide groove 13 along the Y-axis direction can be shortened as much as possible to reduce friction and decrease the driving force required for the magnetic circuit portion 3, thereby reducing the volume of the magnetic circuit portion 3 and facilitating the miniaturization of the relay 1.

[0161] In this embodiment, the guide portion 109 is centrally located along the Y-axis. Compared to guide rods located on both sides along the Y-axis, this saves space along the Y-axis and avoids increasing the size of the relay 1 along the Y-axis. It also prevents the moving contact portion 4 from jamming during movement due to the guide rods on both sides being non-parallel, thus reducing the energy consumption of the coil assembly 37 and preventing the magnetic driving force of the magnetic circuit portion 3 from being wasted on unnecessary work.

[0162] In this embodiment, the first guide portion 103 is disposed on the limiting member 76, which means that the slide groove 13 is disposed on the receiving member 6. Since the stationary contact assembly 7 is fixed to the receiving member 6, the slide groove 13 is disposed on the receiving member 6 to ensure that the extension direction of the slide groove 13 is perpendicular to the arrangement direction of the stationary contact points 20 of the two stationary contacts 19, so that the slide groove 13 guides the guide portion along the X-axis direction more accurately.

[0163] In this embodiment, since the limiting member 76 abuts against the moving contact group 72 before the pushing member 70 moves in the closing direction into the overtravel, and when it enters the overtravel, the moving contact 87 has already abutted against the corresponding stationary contact 20. Therefore, by setting the first guide part 103 on the limiting member 76, the moving contact 85 can be better guided to move in the X-axis direction, so that the moving contact 87 correctly abuts against the stationary contact 20 in the X-axis direction, reducing the contact resistance between the moving contact 87 and the stationary contact 20, and also shortening the arcing time when the moving contact 87 and the stationary contact 20 are disconnected, which is beneficial to increasing the life of the moving contact 87 and the stationary contact 20.

[0164] In this embodiment, two first guide portions 103 extend from the limiting body 102 into the corresponding slide grooves 13 opposite to each other along the Z-axis direction and are arranged along the Z-axis direction. When the Y-axis direction is the direction of gravity, the limiting member 76 is supported by the side wall of the slide groove 13 along the Y-axis direction, and the limiting member 76 is prevented from deflecting on the plane perpendicular to the X-axis direction. This helps to ensure that the moving contact 87 correctly abuts against the stationary contact 20 along the X-axis direction.

[0165] In this embodiment, the first guide portion 103 is located at the front of the limiting body 102 along the closing direction X1, so that the first guide portion 103 is closer to the moving contact 87 along the X-axis direction, which is more conducive to the moving contact 87 correctly contacting the stationary contact 20 along the X-axis direction, reducing the contact resistance between the moving contact 87 and the stationary contact 20, and also shortening the arcing time when the moving contact 87 and the stationary contact 20 are disconnected, which is conducive to increasing the life of the moving contact 87 and the stationary contact 20.

[0166] In this embodiment, the projection of the first guide portion 103 on the first projection plane is circular, which helps to reduce the sliding friction between the first guide portion 103 and the slide groove 13 along the X-axis direction and can prevent jamming during the sliding fit between the first guide portion 103 and the slide groove 13.

[0167] In this embodiment, the first guide portion 103 is made of plastic, which helps to prevent scratches from the plastic receiving element 6 when the first guide portion 103 is made of metal. Therefore, it can prevent scratches from falling on the moving contact 87 and the stationary contact 20 and affecting the contact resistance between the moving contact 87 and the stationary contact 20. The limiting body 102 is made of metal, so it is more rigid and has a better limiting effect on the moving contact assembly 72. The first guide portion 103 and the limiting body 102 are integrally molded, bonded, or screwed together, resulting in a better combination. The position of the first guide portion 103 along the Y-axis is more precise, which is beneficial for better sliding cooperation with the slide groove 13 along the X-axis.

[0168] In this embodiment, the first guide portion 103 and the second guide portion 78 cooperate with each other, so that the moving contact portion 4 can be kept moving along the X-axis direction by sliding with the slide groove 13 along the X-axis direction. At the same time, it avoids the whole formed by the push member 70 and the limiting member 76 fixed to each other from deflecting in the plane perpendicular to the Z-axis direction, which helps to ensure that the moving contact 87 correctly abuts against the stationary contact 20 along the X-axis direction.

[0169] In this embodiment, two second guide portions 78 extend from the push body 77 into the corresponding grooves 13 opposite to each other along the Z-axis direction. When the Y-axis direction is the direction of gravity, the push member is supported by the side wall of the groove 13 along the Y-axis direction. Furthermore, it can prevent the push member 70 from deflecting in a plane perpendicular to the X-axis direction, which helps to ensure that the moving contact 87 correctly abuts against the stationary contact 20 along the X-axis direction.

[0170] In this embodiment, the projection of the second guide portion 78 on the first projection plane is circular, which helps to reduce the sliding friction between the second guide portion 78 and the slide groove 13 along the X-axis direction and avoid jamming during the sliding fit between the second guide portion 78 and the slide groove 13.

[0171] In this embodiment, each groove 13 is divided into a first groove segment 14 suitable for sliding engagement with the first guide portion 103 and a second groove segment 15 suitable for sliding engagement with the second guide portion 78. The first groove segment 14 and the second groove segment 15 are connected or separated along the X-axis direction, which can ensure that the first groove segment 14 and the second groove segment 15 are both located on a straight line extending along the X-axis direction, which is beneficial to more effectively guiding the movement of the moving contact assembly 72 along the X-axis direction.

[0172] In this embodiment, the first mating interval formed between the first guide portion 103 and the slide groove 13 along the Y-axis direction is different from the mating gap between the second guide portion 78 and the slide groove 13 along the Y-axis direction. This helps to reduce the difficulty of establishing a sliding mating gap between the first guide portion 103 and the second guide portion 78 and the slide groove 13, reduce the manufacturing precision requirements of the moving contact portion 4 and the fixed portion 2, and at the same time, it can also correctly guide the movement of the moving contact portion 4 along the Y-axis direction. This is because if both the first and second fitting gaps are small, the manufacturing precision requirements for the mutually fixed pusher 70 and limiter 76 are high, and the fitting precision requirements for the housing 10 and cover 11 are also high. Otherwise, the first guide 103 or the second guide 78 may not be able to be inserted into the slide groove 13, preventing the first guide 103 and the second guide 78 from establishing a sliding fit with the slide groove 13. If both the first and second fitting gaps are large, the sliding fit between the receiving member 6 and the guide 109 cannot correctly guide the movement of the moving contact part 4 along the X-axis, and the moving contact part 4 may deflect in a plane perpendicular to the Z-axis. Therefore, the first fitting gap differs from the second fitting gap. It can reduce the manufacturing precision requirements of the moving contact part 4 and the fixed part 2 due to its relatively large fitting gap, and it can also correctly guide the movement of the moving contact part 4 along the Y-axis due to its relatively small fitting gap.

[0173] In this embodiment, the first fitting gap is smaller than the second fitting gap. Since the first guide portion 103 is closer to the moving contact assembly 72 along the X-axis, it can better guide the moving contact 85 to move along the X-axis, compared to a scheme where the first fitting gap is larger than the second fitting gap, while reducing the manufacturing precision requirements of the moving contact portion 4 and the fixed portion 2. This allows the moving contact 87 to correctly abut against the stationary contact 20 along the X-axis, reducing the contact resistance between the moving contact 87 and the stationary contact 20, and shortening the arcing time when the moving contact 87 and the stationary contact 20 are disconnected, which is beneficial to increasing the lifespan of the moving contact 87 and the stationary contact 20.

[0174] The description of the above specification and embodiments is used to explain the scope of protection of this application, but does not constitute a limitation on the scope of protection of this application.

Claims

1. A relay comprising: a fixed part comprising a housing and a fixed contact group fixed to each other; and a movable contact part adapted to move relative to the fixed part along an X-axis direction and comprising a movable contact group adapted to close or open with the fixed contact group along the X-axis direction; characterized in that: one of the housing and the movable contact part is provided with a sliding groove, and the other is provided with a guide part; the sliding groove extends along the X-axis direction, and the guide part extends into the sliding groove along a Z-axis direction to slide with the sliding groove along the X-axis direction; the guide part comprises a first guide part and a second guide part, the first guide part is closer to the movable contact group along the X-axis direction; the first guide part and the sliding groove form a first fitting gap along a Y-axis direction, and the second guide part and the sliding groove form a second fitting gap along the Y-axis direction; the first fitting gap is smaller than the second fitting gap. The fixed contact group comprises two fixed contacts; the movable contact group comprises a movable contact, the movable contact is provided with an overcurrent bridge and two movable contact points, the two movable contact points are arranged along the Y-axis direction and fixed to the overcurrent bridge, the two movable contact points are adapted to abut against corresponding fixed contacts along a closing direction and to move away from the corresponding fixed contacts along an opening direction, both the closing direction and the opening direction are the X-axis direction; the guide part is centrally located between the two movable contact points of the movable contact along the Y-axis direction.

2. The relay of claim 1, wherein The movable contact part further comprises a pushing member, an elastic support group and a limiting member; the pushing member moves along the X-axis direction to drive the movable contact group to close or open with the fixed contact group along the X-axis direction; the elastic support group is arranged between the pushing member and the movable contact group along the X-axis direction; the limiting member is fixed relative to the pushing member and abuts against the movable contact group along the opening direction when the movable contact group is opened with the fixed contact group; the first guide part is arranged on the limiting member.

3. The relay of claim 2, wherein the relay is configured to: The movable contact part further comprises a connecting member, the connecting member is integrally formed with the pushing member by insert injection molding; the connecting member extends along the Z-axis direction, and both ends of the connecting member extend out of the pushing member to form two connecting ends; the limiting member is further provided with a limiting body fixed to the first guide part, the limiting body is provided with a limiting part and two connecting parts which are integrated with each other, the limiting part is adapted to abut against the overcurrent bridge, and the two connecting parts extend from both ends of the limiting part along the Z-axis direction along the opening direction and are fixed to the corresponding connecting ends.

4. The relay of claim 3 wherein, The number of the first guide parts is two, and the number of the sliding grooves is two; the two first guide parts extend into the corresponding sliding grooves from the limiting body along the Z-axis direction away from each other and are arranged along the Z-axis direction.

5. The relay of claim 4 wherein, The first guide part is located in the front part of the limiting body along the closing direction.

6. The relay of claim 5 wherein, The projection of the first guide part on a first projection plane perpendicular to the Z-axis direction is circular.

7. The relay of claim 1 wherein, The material of the first guide part is plastic, the material of the limiting body is metal, and the two first guide parts are integrally formed with the limiting member by insert injection molding or are bonded or screwed.

8. A relay according to claim 3, wherein the magnetic circuit is formed by a magnetic core and a magnetic yoke, and the magnetic core is disposed in the magnetic yoke. The second guide part is arranged on the pushing member.

9. A relay according to claim 5, wherein the magnetic circuit is formed by a magnetic core (2) and a magnetic yoke (3). The pushing member further comprises a pushing body, and the two second guide parts extend into the corresponding sliding grooves from the pushing body along the Z-axis direction away from each other and are arranged along the Z-axis direction.

10. A relay according to claim 9, wherein the relay is a latching relay. The projection of the second guide part on a first projection plane perpendicular to the Z-axis direction is circular.

11. A relay according to claim 1, wherein the relay is a latching relay. Each sliding groove is divided into a first groove segment adapted to slide with the first guide part and a second groove segment adapted to slide with the second guide part; the first groove segment and the second groove segment are connected or separated along the X-axis direction.

12. A relay according to claim 1, wherein ​ 13. A relay according to claim 1, wherein the relay is a miniature relay. It also comprises a magnetic circuit part, which comprises: an armature assembly fixed with the pusher and comprising a permanent magnet and two armatures, the two armatures being respectively fixed with two magnetic poles of the permanent magnet, and the projections of the two armatures on a first projection plane perpendicular to the Z-axis direction intersect each other; and The coil assembly is provided with two magnetic driving ends arranged along the Y-axis direction, and the polarity temporarily formed by the two magnetic driving ends is reversed by the coil assembly excited by the pulse electric signal, so as to switch the different parts of the two armatures attracted in the X-axis direction and drive the armature assembly to move along the X-axis direction.

14. A relay according to claim 13, wherein the relay is a latching relay. Each armature is provided with two attracting parts corresponding to the two magnetic driving ends, and the attracting parts are suitable for attracting the corresponding magnetic driving ends along the X-axis direction.

15. The relay according to claim 14, wherein: The two armatures are respectively a first armature and a second armature, the two attracting parts of the first armature are respectively a first attracting part and a second attracting part, and the two attracting parts of the second armature are respectively a third attracting part and a fourth attracting part; The armature assembly moves along the X-axis direction between a first position and a second position; in the first position, the first attracting part and the third attracting part respectively attract the two magnetic driving ends, so that the movable contact group is disconnected from the static contact group; in the second position, the fourth attracting part and the second attracting part respectively attract the two magnetic driving ends, so that the movable contact group is connected with the static contact group.

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