Magnetic latching relay

Abstract

Provided in the present disclosure is a magnetic latching relay, comprising an accommodating member, a coil assembly, an armature assembly and an auxiliary monitoring switch, wherein the coil assembly comprises yokes fixed relative to the accommodating member; the armature assembly is disposed outside the coil assembly and moves in response to changes in the polarities of the yokes; the auxiliary monitoring switch comprises an auxiliary stationary contact member and an auxiliary moving contact member, both of which are adapted to output signals outward; and the auxiliary stationary contact member is fixedly connected to a yoke, and the auxiliary moving contact member is adapted to be driven by the armature assembly to abut against or move away from the auxiliary stationary contact member. In the present disclosure, the auxiliary stationary contact member is easy to mount, and the accommodating member has a simple structure and a small size.

Description

Magnetic latching relay

[0001] The present disclosure claims priority to Chinese Patent Application No. 202411360211.6, filed on September 27, 2024, the entire contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the field of magnetic latching relays, in particular to a magnetic latching relay. BACKGROUND

[0003] An auxiliary monitoring switch is usually arranged in the accommodating member of the magnetic latching relay, the auxiliary monitoring switch comprises an auxiliary moving contact and an auxiliary stationary contact, in the prior art, the volume of the auxiliary stationary contact is usually relatively small, the assembly and positioning of the auxiliary stationary contact in the accommodating member are relatively difficult, and the structure of the accommodating member is usually relatively complex and the volume is relatively large. SUMMARY

[0004] The purpose of the present disclosure is to overcome the above-mentioned defects or problems existing in the background art, and to provide a magnetic latching relay, which has simple assembly of the auxiliary stationary contact, simple structure and small volume of the accommodating member.

[0005] To achieve the above-mentioned purpose, the present disclosure and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0006] The first technical solution and its preferred embodiments provide a magnetic latching relay, comprising: an accommodating member; a coil assembly comprising a yoke fixed relative to the accommodating member; an armature assembly arranged outside the coil assembly and moving in response to a polarity change of the yoke; an auxiliary monitoring switch comprising an auxiliary stationary contact and an auxiliary moving contact both used for external connection to output a signal externally; the auxiliary stationary contact is fixed to the yoke, and the auxiliary moving contact is adapted to be driven by the armature assembly to abut against or move away from the auxiliary stationary contact.

[0007] Based on the first technical solution, the second technical solution is also provided, in the second technical solution and its preferred embodiments, the auxiliary stationary contact is provided with an auxiliary stationary contact portion, the auxiliary stationary contact portion is provided with a first side and a second side which are away from each other, the first side is used to abut against the auxiliary moving contact, and the second side abuts against the yoke.

[0008] Based on the second technical solution, the third technical solution is also provided, in the third technical solution and its preferred embodiments, the coil assembly comprises a coil winding arranged on one side of the armature assembly along the X-axis direction, and the coil winding is fixed relative to the accommodating member; the yoke is fixed to an end face of the coil winding, and the auxiliary stationary contact portion is fixed to one side of the yoke which is away from the coil winding.

[0009] Based on the third aspect, the fourth aspect and the preferred embodiments thereof are further provided, wherein the yoke is provided with a magnetic driving segment and a connecting segment which are integrally connected and both are flat plates, the magnetic driving segment is perpendicular to the X-axis direction, the connecting segment is perpendicular to the Y-axis direction and is fixed to the end surface of the coil winding, the auxiliary static contact is fixed to the magnetic driving segment and is provided with an auxiliary static contact point, the auxiliary moving contact is provided with an auxiliary moving contact point which is adapted to be closed or disconnected with the auxiliary static contact point along the X-axis direction, and the Y-axis direction is perpendicular to the X-axis direction.

[0010] Based on the fourth aspect, the fifth aspect and the preferred embodiments thereof are further provided, wherein the auxiliary static contact part is a flat plate which is parallel to the magnetic driving segment.

[0011] Based on the fourth aspect, the sixth aspect and the preferred embodiments thereof are further provided, wherein the connection between the magnetic driving segment and the connecting segment is provided with a circular arc transition surface, and the position where the auxiliary static contact is fixed to the magnetic driving segment avoids the circular arc transition surface.

[0012] Based on the fourth aspect, the seventh aspect and the preferred embodiments thereof are further provided, wherein the yoke extends along the Z-axis direction, and the position where the auxiliary static contact is fixed to the magnetic driving segment is close to the first end of the yoke along the Z-axis direction, wherein the Z-axis direction is perpendicular to the Y-axis direction and the X-axis direction.

[0013] Based on the seventh aspect, the eighth aspect and the preferred embodiments thereof are further provided, wherein the magnetic driving segment is provided with a protruding part which protrudes along the Z-axis direction relative to the connecting segment at the first end of the yoke, and the auxiliary static contact is at least partially fixed to the protruding part.

[0014] Based on the seventh aspect, the ninth aspect and the preferred embodiments thereof are further provided, wherein the auxiliary static contact part is provided with a first connecting part and a second connecting part which are integrally connected along the Z-axis direction, an avoiding gap which is adapted to avoid the armature assembly is formed between the first connecting part and the second connecting part, the second connecting part is farther away from the first end of the yoke than the first connecting part along the Z-axis direction, the second connecting part is closer to the circular arc transition surface of the yoke than the first connecting part along the Y-axis direction, the first connecting part is fixed to the yoke, and the auxiliary static contact point is arranged on the second connecting part.

[0015] Based on the ninth aspect, the tenth aspect and the preferred embodiments thereof are further provided, wherein the auxiliary static contact is further provided with a static lead-out terminal and a bending part, the bending part extends along the X-axis direction, is connected between the first connecting part and the static lead-out terminal and is located on one side of the connecting segment along the Z-axis direction.

[0016] Based on technical solution seven, technical solution eleven is further provided. In technical solution eleven and its preferred embodiments, when the auxiliary moving contact is in contact with the auxiliary stationary contact, the auxiliary stationary contact has an electrical path, and the position where the auxiliary stationary contact is fixed to the magnetic driving section is located outside the electrical path.

[0017] Based on technical solution eleven, technical solution twelve is further provided. In technical solution twelve and its preferred embodiments, the auxiliary stationary contact further comprises a stationary lead terminal and a bending portion, the bending portion extends along the X-axis direction, is connected between the auxiliary stationary contact and the stationary lead terminal, and is located on one side of the connecting section along the Z-axis direction.

[0018] Based on technical solution twelve, technical solution thirteen is further provided. In technical solution thirteen and its preferred embodiments, the auxiliary stationary contact is located between the position where the auxiliary stationary contact is fixed to the magnetic driving section and the circular-arc transition surface along the Y-axis direction.

[0019] Based on technical solution three, technical solution fourteen is further provided. In technical solution fourteen and its preferred embodiments, the magnetic driving section of the yoke iron, away from the coil winding, is punched to form an installation slot with an opening away from the coil winding and a riveting portion protruding from the installation slot; and the auxiliary stationary contact is installed in the installation slot and is provided with a riveting hole matched with the riveting portion.

[0020] Based on any one of technical solutions one to thirteen, technical solution fifteen is further provided. In technical solution fifteen and its preferred embodiments, the auxiliary stationary contact is riveted to the yoke iron.

[0021] Based on technical solution fifteen, technical solution sixteen is further provided. In technical solution sixteen and its preferred embodiments, the auxiliary stationary contact is provided with a riveting hole, and the yoke iron is provided with a riveting portion matched with the riveting hole; the riveting hole is a counterbore, and the riveting portion does not protrude into the riveting hole.

[0022] Based on technical solution seven, technical solution seventeen is further provided. In technical solution seventeen and its preferred embodiments, the auxiliary moving contact comprises an auxiliary moving spring member extending along the Z-axis direction, one end of the auxiliary moving spring member along the Z-axis direction is fixed to the accommodating member, and the other end constitutes a swinging portion; the fixed portion is fixed to the accommodating member, and the auxiliary moving contact is arranged on the swinging portion of the auxiliary moving spring member.

[0023] Based on technical solution seventeen, technical solution eighteen is further provided. In technical solution eighteen and its preferred embodiments, the auxiliary stationary contact is provided with at least two auxiliary stationary contacts; the at least two auxiliary stationary contacts are located at the same height along the Z-axis direction; the auxiliary moving spring member is provided with contact branches equal in number to the auxiliary stationary contacts and corresponding one by one; one end of the at least two contact branches is fixed to the fixed portion, and the other end is spaced apart from each other and is respectively provided with an auxiliary moving contact adapted to abut against the auxiliary stationary contact; and one end of the at least two contact branches away from the fixed portion forms the swinging portion.

[0024] Based on technical solution seventeen, there is also a technical solution nineteen, and in the preferred embodiments of technical solution nineteen, the auxiliary moving spring part is also provided with a pushing part, one end of the pushing part is fixedly connected with the oscillating part, and the other end is suitable for being driven by the armature assembly.

[0025] Based on technical solution nineteen, there is also a technical solution twenty, and in the preferred embodiments of technical solution twenty, the accommodating part includes a base and an outer cover, one end of the base along the Z-axis direction is provided with an opening, and the outer cover is covered outside the base; the base is provided with a bottom wall perpendicular to the Z-axis direction, and the first end of the yoke is away from the bottom wall; the fixed part is fixedly connected to the bottom wall.

[0026] Based on technical solution twenty, there is also a technical solution twenty-one, and in the preferred embodiments of technical solution twenty-one, the auxiliary moving contact part further includes a leading part; the leading part is provided with a fixed part, a moving leading terminal and a moving leading part, the fixed part is fixedly connected with the fixed end of the auxiliary moving spring part; the auxiliary static contact part is also provided with a static leading terminal, the static leading terminal and the moving leading terminal both extend along the Y-axis direction and are flush in the Z-axis direction; the moving leading part is located on the side of the fixed part facing the auxiliary static contact part, one end of the moving leading part is fixedly connected with the fixed part, and the other end is connected with the moving leading terminal.

[0027] Based on technical solution twenty-one, there is also a technical solution twenty-two, and in the preferred embodiments of technical solution twenty-two, the moving leading part is a flat sheet perpendicular to the Y-axis direction; the accommodating part is provided with a first side wall perpendicular to the Y-axis direction and a first limiting part and a second limiting part protruding from the bottom wall, the first limiting part is used to limit the displacement of the fixed part along the X-axis direction, and the second limiting part cooperates with the first side wall to limit the displacement of the moving leading part along the Y-axis direction.

[0028] Based on technical solution two, there is also a technical solution twenty-three, and in the preferred embodiments of technical solution twenty-three, the armature assembly is suitable for rotating relative to the coil assembly around a rotation axis extending along the Z-axis direction; the coil assembly includes a coil winding extending along the Y-axis direction and two yokes arranged along the Y-axis direction, and the auxiliary static contact part is fixedly connected to one of the yokes.

[0029] Based on technical solution twenty-three, there is also a technical solution twenty-four, and in the preferred embodiments of technical solution twenty-four, it also includes a contact part, the contact part includes a moving contact part and a static contact part, the moving contact part is provided with a moving contact point, and the static contact part is provided with a static contact point; the armature assembly is provided with an integral driving part and an auxiliary pushing part, the moving contact part is suitable for being driven by the driving part to make the moving contact point and the static contact point close or disconnect along the X-axis direction; the auxiliary static contact part is suitable for being driven by the auxiliary driving part to abut or move away from the auxiliary static contact part.

[0030] Based on the twenty-fourth technical scheme, the twenty-fifth technical scheme and the preferred embodiments thereof are further provided, wherein the contact part and the coil winding are respectively located on two sides of a first plane along the X-axis direction, the first plane is perpendicular to the X-axis direction and passes through the rotation axis; the side of the armature assembly away from the coil winding is provided with the driving part and the auxiliary pushing part, and the auxiliary pushing part is suitable for directly driving the auxiliary movable contact.

[0031] Based on the twenty-fifth technical scheme, the twenty-sixth technical scheme and the preferred embodiments thereof are further provided, wherein the coil assembly and the armature assembly form a magnetic circuit part, the magnetic circuit part has a magnetic retention function; the coil assembly is provided with two magnetic driving segments; the armature assembly includes a permanent magnet, two armatures and an insulating piece, the two armatures are respectively fixed to two magnetic poles of the permanent magnet, each armature is respectively provided with two attraction parts suitable for being attracted to the magnetic driving segments, in the magnetic retention state, two armatures have one attraction part respectively attracted to the corresponding magnetic driving segment to form a closed magnetic circuit passing through the two magnetic driving segments; the insulating piece is fixed to the permanent magnet; the insulating piece is provided with the driving part and the auxiliary pushing part.

[0032] Based on the twenty-fifth technical scheme, the twenty-seventh technical scheme and the preferred embodiments thereof are further provided, wherein the coil winding is provided with a signal terminal; the contact part is provided with a connection terminal; the auxiliary static contact and the auxiliary movable contact are respectively provided with a static lead-out terminal and a movable lead-out terminal; the accommodating part includes a base and an outer cover, one end of the base along the Z-axis direction is provided with an opening, and the outer cover is arranged outside the base; the coil winding is fixed in the base, the base is provided with a first side wall perpendicular to the Y-axis direction, the signal terminal, the static lead-out terminal and the movable lead-out terminal are located at the same height along the Z-axis direction and are located on the side of the first side wall close to the opening.

[0033] From the above description of the present disclosure and the preferred embodiments thereof, it can be known that, compared with the prior art, the technical scheme of the present disclosure and the preferred embodiments thereof have the following beneficial effects due to the following technical means:

[0034] The inventor of the present disclosure knows through continuous observation, experiment and research that, in the prior art, the reason for causing the technical problem of "the structure of the accommodating part of the magnetic retention relay is usually relatively complex and large in size" is that the auxiliary static contact needs to bear the abutting force of the auxiliary movable contact, and therefore needs to maintain sufficient strength and stability, and in order to ensure the strength of the auxiliary static contact, the accommodating part usually needs to be additionally provided with a mounting structure to fix and support the auxiliary static contact, which on the one hand makes the structure of the accommodating part more complex, is not easy to be formed and save materials, and on the other hand also causes the size of the accommodating part to increase, which is not conducive to the miniaturization design of the magnetic retention relay to better meet the use requirements.

[0035] Since the yoke is usually fixed to the end face of the coil winding and is fixedly inserted into the accommodating member together with the coil winding, in the first aspect and the preferred embodiments thereof, the auxiliary static contact is fixed to the yoke, so that the auxiliary static contact can be installed and positioned simultaneously when the yoke is installed, thereby avoiding the need to install the auxiliary static contact again, facilitating assembly, and solving the problem of difficult assembly and positioning of small parts. In addition, the problem of easy chipping of the auxiliary static contact during installation of the base can be avoided. More preferably, the stability of the yoke and the coil body on the base is utilized to directly support the auxiliary static contact by the yoke to obtain strength and stability, so that a mounting structure does not need to be formed on the accommodating member, the structure of the accommodating member is simple, easy to form and saves materials. In addition, it is also beneficial to reduce the volume of the accommodating member and the miniaturization design of the magnetic latching relay to better meet the use requirements and reduce costs.

[0036] In the first aspect and the preferred embodiments thereof, since only the auxiliary moving contact needs to be installed, the original situation of providing two installation positions on the accommodating member for the installation of the auxiliary static contact and the auxiliary moving contact is changed to only one installation position, and the installation of the auxiliary moving contact only needs to consider that the auxiliary moving contact can be reliably separated and other structures that can avoid the armature assembly and the coil assembly, so that the space for the overall installation of the auxiliary monitoring switch is effectively reduced without increasing the volume of the accommodating member. In addition, the auxiliary monitoring switch in the present technical solution occupies less space compared to the auxiliary monitoring switch standard part, and the position of the terminal of the auxiliary monitoring switch can be adjusted as needed, and the structure design is simpler.

[0037] In the second aspect and the preferred embodiments thereof, the first side of the auxiliary static contact portion is used to abut against the auxiliary moving contact, and the second side opposite to the first side abuts against the yoke. When the auxiliary moving contact abuts against the auxiliary static contact portion, the auxiliary static contact portion is supported by the yoke, further improving the stability of the auxiliary moving contact in the contact direction of the auxiliary moving contact, and making the abutment of the auxiliary moving contact and the auxiliary static contact reliable.

[0038] In the third aspect and the preferred embodiments thereof, the coil assembly includes a coil winding arranged on one side of the armature assembly along the X-axis direction, and the auxiliary static contact is fixed to the side of the yoke away from the coil winding. Compared to being fixed to the side of the yoke facing the coil winding, the auxiliary static contact is more easily avoided from the coil winding, and the distance between the coil winding and the armature assembly (along the X-axis direction) can not be too large, thereby reducing the occupied space of the magnetic latching relay in the X-axis direction.

[0039] In the fourth aspect and the preferred embodiments, the yoke iron is provided with a magnetic driving segment extending perpendicularly to the X-axis direction, and the auxiliary static contact is fixed to the side of the magnetic driving segment away from the coil winding. The magnetic driving segment has a large surface area, which helps to improve the connection strength and stability of the auxiliary static contact after being fixed to the magnetic driving segment. In addition, compared with the form in which the auxiliary static contact is fixed to the connecting segment of the yoke iron, the auxiliary monitoring switch occupies less space in the Y-axis direction. The auxiliary moving contact is adapted to be closed or disconnected with the auxiliary static contact in the X-axis direction, so that when the auxiliary moving contact is closed with the auxiliary static contact, the auxiliary static contact can be supported by the magnetic driving segment, and the structure is more stable.

[0040] In the fifth aspect and the preferred embodiments, the auxiliary static contact part is a flat sheet that is parallel to the magnetic driving segment, which is beneficial to reduce the occupation space of the auxiliary static contact part in the X-axis direction, so as to avoid interference with the movement of the armature assembly.

[0041] In the sixth aspect and the preferred embodiments, the connection between the magnetic driving segment and the connecting segment has a circular arc transition surface, and the position where the auxiliary static contact is fixed to the magnetic driving segment avoids the circular arc transition surface, so that the auxiliary static contact and the yoke iron have a larger connection area, and the fixing strength of the auxiliary static contact and the yoke iron is improved.

[0042] In the seventh aspect and the preferred embodiments, the yoke iron extends along the Z-axis direction; the position where the auxiliary static contact is fixed to the magnetic driving segment is close to the first end of the yoke iron in the Z-axis direction. Compared with being arranged close to the middle part of the yoke iron, the auxiliary static contact is more likely to avoid the armature assembly in the Z-axis direction, and it is also easier to realize the fixing operation of the auxiliary static contact and the yoke iron.

[0043] In the eighth aspect and the preferred embodiments, at the first end of the yoke iron, the magnetic driving segment is provided with a protruding part protruding in the Z-axis direction relative to the connecting segment, and the auxiliary static contact is at least partially fixed to the protruding part. On the one hand, the auxiliary static contact is more likely to avoid the armature assembly in the Z-axis direction, and on the other hand, the fixing position is more likely to avoid the circular arc transition surface of the yoke iron, so that the connection between the auxiliary static contact and the yoke iron is more stable. In addition, the auxiliary static contact and the yoke iron have a larger connection area, and the fixing strength is improved.

[0044] In the ninth aspect and preferred embodiments thereof, the first connecting portion and the second connecting portion form a clearance suitable for avoiding the armature assembly; the second connecting portion is farther away from the first end of the yoke than the first connecting portion; in the Y-axis direction, the second connecting portion is closer to the arc transition surface of the yoke than the first connecting portion; the first connecting portion is fixed to the yoke; and the auxiliary static contact is arranged on the second connecting portion, which on one hand makes the auxiliary static contact more easily avoid the armature assembly in the Y-axis direction and the Z-axis direction, and on the other hand makes the first connecting portion farther away from the arc transition surface of the yoke, thereby improving the connection stability of the first connecting portion and the yoke; in addition, the second connecting portion arranged closer to the arc transition surface is beneficial to avoiding the interference of the second connecting portion to the movement of the armature assembly.

[0045] In the tenth aspect and preferred embodiments thereof, the auxiliary static contact further comprises a static lead-out terminal and a bending portion, the bending portion extends along the X-axis direction, is connected between the first connecting portion and the static lead-out terminal, and is located on one side of the connecting section in the Z-axis direction, which on one hand makes full use of the space on one side of the connecting section in the Z-axis direction to avoid the auxiliary static contact expanding the occupied space of the magnetic latching relay in the Z-axis direction; and on the other hand makes the static lead-out terminal close to the coil assembly, thereby being more beneficial to realizing the electrical isolation between the weak current terminals (including the terminals of the coil assembly and the auxiliary monitoring switch) of the magnetic latching relay and the strong current terminals (mainly referring to the connecting terminals of the contact part below) of the magnetic latching relay; in addition, the static lead-out terminal is connected to the bending portion, which is beneficial to saving the length of the bending portion, saving materials and costs.

[0046] In the eleventh aspect and preferred embodiments thereof, when the auxiliary moving contact is in contact with the auxiliary static contact, the auxiliary static contact has an electrical path, the position where the auxiliary static contact is fixed to the magnetic driving section is located outside the electrical path, and when the auxiliary monitoring switch is closed, the current does not pass through the position where the auxiliary static contact is fixed to the magnetic driving section to enter the yoke, so that the current of the auxiliary monitoring switch can be prevented from affecting the magnetic loop in the yoke without the need of arranging an insulating structure between the auxiliary static contact and the magnetic driving section, thereby reducing the complexity of the structure.

[0047] In the twelfth aspect and the preferred embodiments thereof, the auxiliary static contact further comprises a static lead-out terminal and a bent portion, the bent portion extends along the X-axis direction, is connected between the auxiliary static contact portion and the static lead-out terminal, and is located on one side of the connecting section along the Z-axis direction. On the one hand, the space on the one side of the connecting section along the Z-axis direction is fully utilized to avoid the auxiliary static contact from expanding the occupied space of the magnetic latching relay in the Z-axis direction. On the other hand, the static lead-out terminal is close to the coil assembly, thereby being more conducive to achieving electrical isolation between the weak current terminals (including the terminals of the coil assembly and the auxiliary monitoring switch) of the magnetic latching relay and the strong current terminals (mainly referring to the connecting terminals of the contact portion in the following) of the magnetic latching relay. In addition, the static lead-out terminal is connected to the bent portion, thereby being conducive to saving the length of the bent portion and saving materials and costs.

[0048] In the thirteenth aspect and the preferred embodiments thereof, the auxiliary static contact is located between the position where the auxiliary static contact portion is fixed to the magnetic driving section and the circular-arc transition surface along the Y-axis direction, thereby being conducive to achieving that the position where the auxiliary static contact portion is fixed to the magnetic driving section is located outside the electrical path and making the fixed position further away from the circular-arc transition surface of the yoke. The connection between the auxiliary static contact and the yoke is more stable.

[0049] In the fourteenth aspect and the preferred embodiments thereof, the magnetic driving section of the yoke is punched to form an installation groove with an opening away from the coil winding and a riveting portion protruding from the installation groove, and the auxiliary static contact is installed in the installation groove and is provided with a riveting hole matched with the riveting portion. The punching process makes the riveting portion have a greater length in the X-axis direction, thereby making the auxiliary static contact have a greater thickness and having a smaller occupied space in the X-axis direction when applied to the magnetic latching relay.

[0050] In the fifteenth aspect and the preferred embodiments thereof, the auxiliary static contact is riveted to the yoke, thereby being simpler in process and more stable in structure.

[0051] In the sixteenth aspect and the preferred embodiments thereof, the riveting hole is a counterbore, and the riveting portion does not protrude out of the riveting hole, thereby being more conducive to reducing the occupied space of the auxiliary static contact portion in the X-axis direction.

[0052] In the seventeenth aspect and the preferred embodiments thereof, the auxiliary moving contact is provided with an auxiliary moving spring member extending along the Z-axis direction. Compared with the auxiliary moving spring member extending along the Y-axis direction, the auxiliary monitoring switch has a smaller occupied space in the Y-axis direction, and the force arm of the auxiliary moving contact is longer, thereby being conducive to reducing stress concentration and improving service life.

[0053] In technical solution eighteen and preferred embodiments thereof, the auxiliary static contactor has at least two auxiliary static contact points, each of which is located at the same height along the Z-axis direction; the auxiliary moving spring member has contact branches equal in number to and corresponding to the auxiliary static contact points, each of which is fixedly connected to the fixed part at one end and has an auxiliary moving contact point adapted to abut against the auxiliary static contact point at the other end; and each contact branch is formed with an oscillating part at the end away from the fixed part. On the one hand, the arrangement of the plurality of auxiliary moving and static contact points can improve the reliability of the closing of the auxiliary monitoring switch and is also conducive to the processing of the auxiliary moving contact member and the auxiliary static contact member; on the other hand, it is also conducive to the deformation of the auxiliary moving contact member along the X-axis direction, improving the reliability of the closing and the service life. The fact that each auxiliary static contact point is located at the same height along the Z-axis direction makes the contact pressure of each auxiliary moving contact point and each auxiliary static contact point consistent.

[0054] In technical solution nineteen and preferred embodiments thereof, one end of the pushing part is fixedly connected to the oscillating part, and the other end is adapted to be driven by the armature assembly, so that the whole auxiliary moving contact member is closer to the side where the armature assembly is located only through the pushing part. The auxiliary moving spring member can be arranged closer to the side where the auxiliary static contact member is located, so as to avoid affecting the movement of the armature assembly. Since the pushing part is located at one end of the auxiliary moving contact member, the driving structure for driving the pushing part only needs to be arranged on one side of the armature assembly along the Z-axis direction, and the other positions of the armature assembly along the Z-axis direction can be well used for avoiding the auxiliary moving spring member.

[0055] In technical solution twenty and preferred embodiments thereof, the fixed part is fixedly connected to the bottom wall, which is easy to install and makes the length between the oscillating part and the fixed end of the auxiliary moving spring member longer, which is more conducive to reducing the stress concentration phenomenon of the auxiliary moving spring member and improving the service life.

[0056] In technical solution twenty-one and preferred embodiments thereof, the moving lead-out part is located on the side of the fixed part facing the auxiliary static contact member, one end of which is fixedly connected to the fixed part, and the other end is close to the bending part and connected to the moving lead-out terminal. On the one hand, the moving lead-out terminal can be installed close to the signal terminal of the coil assembly, which is conducive to achieving electrical isolation between the weak current terminals (including the terminals of the coil assembly and the auxiliary monitoring switch) of the magnetic latching relay and the strong current terminals (mainly the connection terminals of the contact part in the following) of the magnetic latching relay. On the other hand, it can also avoid the influence of the multiple grooves of the accommodating member of the magnetic latching relay on the strength of the accommodating member. The static lead-out terminal and the moving lead-out terminal both extend along the Y-axis direction and are flush in the Z-axis direction. On the one hand, the static lead-out terminal and the moving lead-out terminal do not need to be bent complicatedly, which reduces the molding difficulty, material cost and improves the service life. On the other hand, the wiring path on the PCB board is simpler.

[0057] In the twenty-second aspect and preferred embodiments thereof, the movable lead-out portion is a flat sheet in the vertical Y-axis direction, which is beneficial to reduce the space occupied by the movable lead-out portion in the Y-axis direction, and the accommodating member is provided with a first limiting portion and a second limiting portion, the first limiting portion is used to limit the displacement of the fixed portion along the X-axis direction, and the second limiting portion cooperates with the first side wall to limit the displacement of the movable lead-out portion along the Y-axis direction, so that the auxiliary movable contact is limited in both the X-axis direction and the Y-axis direction, further improving the structural stability of the auxiliary movable contact, and this also means that the movable lead-out portion abuts against the first side wall, and the first side wall can limit the movable lead-out portion and improve its strength.

[0058] In the twenty-third aspect and preferred embodiments thereof, the armature assembly rotates around the rotation axis extending along the Z-axis direction, and the coil assembly includes a coil winding extending along the Y-axis direction and two yokes arranged along the Y-axis direction, and the entire magnetic circuit system has simple structure, reasonable layout and small space occupation.

[0059] In the twenty-fourth aspect and preferred embodiments thereof, generally, if the armature assembly drives the movable contact to move by driving a separate push card, the region on the side of the yoke facing the contact portion along the X-axis direction is generally used as the movement space of the push card. If an auxiliary monitoring switch needs to be installed on the side of the armature along the Y-axis direction, a swing arm needs to be led out from the armature assembly to push the auxiliary monitoring switch, and the swing arm also needs to bypass the armature in the armature assembly, resulting in a more complex structure, large material consumption and large volume occupation. In the present technical solution, the driving portion and the auxiliary pushing portion are integrally formed on the armature assembly, so that by reasonable design and processing, the driving portion can avoid the space for installing the auxiliary monitoring switch, and at the same time, the auxiliary pushing portion with small structure is used to drive the auxiliary movable contact in the auxiliary monitoring switch to move, which has simple structure, less material consumption, good molding and no need to increase the volume of the magnetic latching relay. In the present technical solution, the driving portion and the auxiliary pushing portion are integrally arranged on the armature assembly, which has simple structure, easy molding and is beneficial to reduce the production cost. In addition, the driving portion and the auxiliary pushing portion are stable relative to the armature assembly, so as to reduce the shaking of the movable contact and the auxiliary movable contact during breaking, avoid affecting the arc striking characteristics of the breaking arc, reduce the hazards of contact ablation and uncontrolled arc ablation of other components, etc.

[0060] In the technical solution twenty-five and the preferred embodiments thereof, the contact part and the coil winding are respectively located on two sides of the first plane along the X-axis direction, and the auxiliary static contact is fixed to one of the yokes, so that the contact part is away from the coil winding and the auxiliary monitoring switch along the X-axis direction, and the electrical distance between the weak current terminal of the coil assembly, the weak current terminal of the auxiliary monitoring switch and the strong current terminal of the contact part is kept in a larger range, thereby improving the electrical isolation problem and facilitating the realization of the isolation of the strong and weak current terminals. The side of the armature assembly away from the coil winding is provided with an auxiliary pushing part and a driving part, which is beneficial to avoid the auxiliary monitoring switch. The auxiliary pushing part is suitable for directly driving the auxiliary moving contact. Compared with the scheme of providing a pushing card between the auxiliary pushing part and the auxiliary moving contact, the space required along the Y-axis direction is smaller, and the problem of jamming after long-term operation of the pushing card is avoided.

[0061] In the technical solution twenty-six and the preferred embodiments thereof, in the magnetic holding state, the two armatures respectively have one attraction part attracting the corresponding magnetic driving segment to form a closed magnetic loop passing through the two magnetic driving segments. The closed magnetic loop passes through one magnetic pole of the permanent magnet, one attraction part, one magnetic driving segment, the core, the other magnetic driving segment and the other attraction part, and returns to the other magnetic pole of the permanent magnet. Compared with the closed magnetic loop passing through only one magnetic driving segment, the closed magnetic loop of the present technical solution has a larger magnetic attraction force and a more stable magnetic circuit. When the coil assembly is powered off, the permanent magnet can still keep the attraction part and the magnetic driving segment attracted. The insulating part is provided with an auxiliary pushing part and a driving part, which is easy to process and form.

[0062] In the technical solution twenty-seven and the preferred embodiments thereof, since the auxiliary monitoring switch is located between the contact part and the coil winding along the X-axis direction, and the static lead-out terminal and the moving lead-out terminal are also located between the signal terminal and the connection terminal along the X-axis direction, the creepage distance between the signal terminal and the connection terminal is ensured without increasing the length along the X-axis direction. The end of the signal terminal, the static lead-out terminal and the moving lead-out terminal close to the opening is located at the same height along the Z-axis direction and is located on the side of the first side wall close to the opening, so that the signal terminal, the static lead-out terminal and the moving lead-out terminal are all inserted downward from the opening of the base. Therefore, the slot on the first side wall can not be opened very long along the Z-axis direction, the weakening of the strength of the first side wall is reduced, and the contact part, the coil assembly and the auxiliary monitoring switch can be directly placed into the opening of the base during installation, which is convenient and labor-saving. It is also beneficial to connect the magnetic latching relay to the PCB along the Y-axis direction. BRIEF DESCRIPTION OF DRAWINGS

[0063] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed in the embodiment description are briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art without creative labor.

[0064] Figure 1 is an exploded perspective view of a magnetic latching relay of Example 1 of the present disclosure.

[0065] Figure 2 is a schematic view of a base of Example 1 of the present disclosure.

[0066] Figure 3 is a top view of the magnetic latching relay of Example 1 of the present disclosure with a cover removed, with the armature assembly rotated to a first position.

[0067] Figure 4 is a top view of the magnetic latching relay of Example 1 of the present disclosure with the cover removed, with the armature assembly rotated to a second position.

[0068] Figure 5 is a cross-sectional view of Figure 3 along line A-A.

[0069] Figure 6 is a schematic view of the armature assembly of Example 1 of the present disclosure.

[0070] Figure 7 is a schematic view of the coil assembly of Example 1 of the present disclosure.

[0071] Figure 8 is a schematic view of the coil assembly and auxiliary stationary contact of Example 1 of the present disclosure.

[0072] Figure 9 is a schematic view of the coil assembly and auxiliary monitoring switch of Example 1 of the present disclosure.

[0073] Figure 10 is a schematic view of the auxiliary movable contact of Example 1 of the present disclosure.

[0074] Figure 11 is a schematic view of the yoke and auxiliary stationary contact of Example 2 of the present disclosure.

[0075] Figure 12 is a schematic view of the base, yoke, and auxiliary stationary contact of Example 3 of the present disclosure.

[0076] Explanation of main reference numerals: 10. housing; 11. base; 111. bottom wall; 1111. first insertion hole; 1112. first limiting portion; 1113. second limiting portion; 1114. third positioning groove; 112. first side wall; 1121. first through groove; 1122. second through groove; 1123. third through groove; 113. partition wall; 1131. through opening; 114. first groove; 1141. first positioning groove; 1142. matching groove; 115. second groove; 1151. second positioning groove; 1152. limiting strip; 116. support seat; 12. cover; 13. fixing frame; 131. second insertion hole; 100. magnetic circuit portion; 20. coil assembly; 21. coil frame; 211. baffle; 22. coil winding; 23. yoke; 231. magnetic driving segment; 2311. protruding portion; 232. connecting segment; 233. circular arc transition surface; 234. first magnetic driving segment; 235. second magnetic driving segment; 2351. riveting portion; 2352. mounting groove; 01. signal terminal; 30. armature assembly; 31. armature; 32. first armature; 321. first attraction portion; 33. second armature; 331. second attraction portion; 34. insulating member; 341. insertion shaft; 35. driving portion; 351. driving groove; 36. auxiliary pushing portion; 361. pushing groove; 200. contact portion; 40. movable contact; 41. movable spring piece; 411. movable contact point; 42. movable spring lead-out piece; 421. avoidance groove; 50. stationary contact; 51. stationary contact point; 02. connection terminal; 300. auxiliary monitoring switch; 60. auxiliary stationary contact; 61. auxiliary stationary contact portion; 611. first connecting portion; 6111. riveting hole; 612. second connecting portion; 613. auxiliary stationary contact point; 614. avoidance notch; 62. bending portion; 03. stationary lead-out terminal; 70. auxiliary movable contact; 71. auxiliary movable spring member; 711. swing portion; 7111. auxiliary movable contact point; 712. contact branch; 713. pushing portion; 72. lead-out member; 73. fixing portion; 74. movable lead-out portion; 04. movable lead-out terminal. DETAILED DESCRIPTION

[0077] In the claims and specification, except where otherwise expressly indicated, the terms "X-axis direction", "Y-axis direction" and "Z-axis direction" merely refer to the features having one of the above directions being perpendicular to the features having another direction, and do not require them to be implemented according to the "X-axis direction", "Y-axis direction" and "Z-axis direction" introduced in the embodiments. In the embodiments, the X-axis direction is perpendicular to the Y-axis direction and also perpendicular to the Z-axis direction. Among them, the X-axis direction can be divided into left and right, the Y-axis direction can be divided into front and back, and the Z-axis direction can be divided into up and down.

[0078] In the claims and specification, unless otherwise defined, the terms "first", "second" or "third" and the like are merely used to distinguish different objects, and are not used to describe a specific order.

[0079] In the claims and specification, unless otherwise stated, the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like shall refer to the orientation or position shown in the drawings, and are for convenience only in describing the application and are not intended to limit the application or any embodiment thereof to any particular orientation or position.

[0080] In the claims and specification, unless otherwise stated, the term "fixedly connected" or "fixed connection" shall be construed broadly as any connection manner without displacement relationship and relative rotation relationship between the two, that is, it includes irremovable fixed connection, removable fixed connection, integration and fixed connection through other devices or elements.

[0081] In the claims and specification, unless otherwise stated, the terms "including", "having" and their variants mean "including but not limited to".

[0082] In the claims and specification, unless otherwise stated, the term "provided with" means that the technical feature located after it is part of the technical feature located before it.

[0083] In the claims and specification, unless otherwise stated, the term "support" means that the gravity of an object will act on another object.

[0084] In the claims and specification, unless otherwise stated, the term "integration" means direct connection without other parts between the two.

[0085] In the claims and specification, unless otherwise stated, the term "extension direction" means the length direction of the object, including the part of the object bending or tilting in the length direction.

[0086] Referring to FIG. 1, FIG. 1 shows a structure of a magnetic latching relay, which includes a housing 10, a magnetic circuit part 100, a contact part 200 and an auxiliary monitoring switch 300.

[0087] The magnetic latching relay is used to receive an electric signal to control the on-off of an external circuit. Specifically, the magnetic latching relay in the present embodiment is a magnetic latching magnetic latching relay, which controls the on-off of an external circuit by receiving a pulse electric signal. In the present embodiment, the pulse electric signal can be divided into a first pulse electric signal and a second pulse electric signal. The first pulse electric signal and the second pulse electric signal are used to control the switching or on-off of the external circuit, respectively.

[0088] The accommodating member 10 comprises a base 11, an outer cover 12 and a fixing frame 13. Fig. 1 shows the structure of the accommodating member 10 in the embodiment, and Fig. 2 shows the structure of the base 11 in the embodiment. Referring to Figs. 1 and 2, the base 11 is a box-shaped structure with one end open. The length direction of the base 11 is the X-axis direction, the width direction is the Y-axis direction, and the height direction is the Z-axis direction. In the embodiment, the base 11 is open at one end along the Z-axis direction. The outer cover 12 covers the outside of the base 11 and is fixedly connected with the base 11. In the embodiment, the opening is located at the upper end of the base 11. The base 11 is provided with a bottom wall 111 perpendicular to the Z-axis direction and a first side wall 112 perpendicular to the Y-axis direction. The first side wall 112 is provided with two first through grooves 1121 opening upward along the Y-axis direction, two second through grooves 1122 opening upward and three third through grooves 1123 opening upward. The opening ends of the first through grooves 1121, the second through grooves 1122 and the third through grooves 1123 are located at the same height along the Z-axis direction. The base 11 is provided with a partition wall 113. The partition wall 113 divides the base 11 into a first groove 114 and a second groove 115 along the X-axis direction. The partition wall 113 is provided with a through opening 1131 close to the first side wall 112. The bottom wall 111 forms the groove bottoms of the first groove 114 and the second groove 115. The width of the second groove 115 along the X-axis direction is greater than the width of the first groove 114 along the X-axis direction. The inner cavities of the first groove 114 and the second groove 115 are both cuboid structures. The first groove 114 is provided with a first positioning groove 1141 at one end along the Y-axis direction and a matching groove 1142 at the other end along the Y-axis direction. The two first through grooves 1121 correspond to the first groove 114 and are arranged along the X-axis direction. The groove bottom of the second groove 115 is provided with a convex shaft close to the partition wall 113. The convex shaft forms a first insertion hole 1111 extending along the Z-axis direction. The second groove 115 is also provided with two L-shaped second positioning grooves 1151 along the Y-axis direction. The second positioning grooves 1151 can limit the yoke 23 along the X-axis direction and the Y-axis direction. The side of the second groove 115 away from the first groove 114 is also provided with a plurality of limiting strips 1152 extending along the X-axis direction and arranged along the Y-axis direction. The limiting strips 1152 have circular arc surfaces and are suitable for abutting against the coil winding 22 to limit the sliding of the coil winding 22. The second through grooves 1122 and the third through grooves 1123 both correspond to the second groove 115. The two second through grooves 1122 are arranged along the X-axis direction, and the three third through grooves 1123 are also arranged along the Y-axis direction. The two second through grooves 1122 are located between the first through grooves 1121 and the third through grooves 1123 along the X-axis direction.The bottom wall 111 is further provided with a first limiting part 1112 and a second limiting part 1113 in the second groove 115, the first limiting part 1112 and the second limiting part 1113 are close to the first side wall 112 and cooperate with the first side wall 112 to form a third positioning groove 1114 in L shape to limit a part of the auxiliary moving contact 70 in the X axis direction and the Y axis direction. The base 11 is further provided with a supporting seat 116 in the second groove 115 close to the partition wall 113.

[0089] Still referring to FIG. 1, the outer cover 12 is a cuboid structure, which is similar to the length, width and height of the base 11 but slightly larger than the length, width and height of the base 11, and is open at one end along the Y axis direction. The outer cover 12 can be sleeved outside the base 11 along the Y axis direction and is sealingly and fixedly connected with the base 11 to seal the opening of the base 11.

[0090] The fixing frame 13 is supported on the supporting seat 116 and is fixedly connected with the supporting seat 116. The fixing frame 13 is provided with a second insertion hole 131 coaxial with the first insertion hole 1111. After the outer cover 12 is fixedly connected with the base 11, the fixing frame 13 is further limited by the outer cover 12 in the Z axis direction.

[0091] Referring to FIGS. 3-4, FIGS. 3-4 show schematic views of the magnetic circuit part 100 installed in the accommodating part 10. The magnetic circuit part 100 (except for the signal terminal 01 and the driving part 35 in the following) is basically accommodated in the second groove 115. The magnetic circuit part 100 includes the coil assembly 20 and the armature assembly 30.

[0092] A schematic view of the coil assembly 20 is shown in FIG. 1, which is disposed in the second slot 115 and supported on the bottom wall 111 of the second slot 115. The coil assembly 20 includes a coil frame 21, a coil winding 22, a core (not shown in the figure), and two yokes 23. Referring to FIGS. 3-4, the coil frame 21 is fixedly connected in the second slot 115, extends along the Y-axis direction, and is provided with a central hole (not shown in the figure) extending along the Y-axis direction. The two ends of the coil frame 21 along the Y-axis direction are respectively provided with a retaining wall 211. The coil winding 22 is wound on the coil frame 21 and located between the two retaining walls 211. Therefore, the coil winding 22 also extends along the Y-axis direction and is fixed relative to the accommodating member 10. In the present embodiment, the coil winding 22 is fixedly connected in the base 11. The coil winding 22 is connected to a signal terminal 01, which is fixedly connected to the retaining wall 211 of the coil frame 21 and penetrates the third penetration slot 1123 of the first side wall 112 along the Y-axis direction. The core extends along the Y-axis direction and is inserted into the central hole of the coil frame 21. The two yokes 23 are respectively fixedly connected to the two ends of the core, that is, the two yokes 23 are both fixedly connected to the end face of the coil winding 22. Referring to FIG. 7, which shows a schematic view of the coil assembly 20, the yoke 23 extends along the Z-axis direction, and the ends of the two yokes 23 away from the core respectively form a magnetic driving segment 231 perpendicular to the X-axis direction. The yoke 23 is also provided with a connecting segment 232 integrated with the magnetic driving segment 231, which is perpendicular to the Y-axis direction and fixedly connected to the end face of the coil. In the present embodiment, the magnetic driving segment 231 and the connecting segment 232 are both flat plates, and the connection between the magnetic driving segment 231 and the connecting segment 232 has a circular arc transition surface 233. At the first end (upper end) of the yoke 23 away from the bottom wall 111, the magnetic driving segment 231 is provided with a protruding portion 2311 protruding along the Z-axis direction relative to the connecting segment 232. The two magnetic driving segments 231 are arranged along the Y-axis direction, and the two magnetic driving segments 231 are respectively a first magnetic driving segment 234 and a second magnetic driving segment 235. When the signal terminal 01 receives a pulse electrical signal, the polarities of the first magnetic driving segment 234 and the second magnetic driving segment 235 are opposite, and when the signal terminal 01 switches to receive a first pulse electrical signal and a second pulse electrical signal, the first magnetic driving segment 234 and the second magnetic driving segment 235 change between the S pole and the N pole, respectively.

[0093] Referring to FIG. 1, the structure of the armature assembly 30 is shown. The armature assembly 30 rotates relative to the coil assembly 20 about a rotation axis extending along the Z-axis direction in response to the polarity change of the magnetic driving segment 231. In the present embodiment, the armature assembly 30 rotates between a first position and a second position. The rotation axis of the armature assembly 30 and the axis of the coil winding 22 are arranged along the X-axis direction.

[0094] As shown in FIG. 1 and FIG. 6, the structure of the armature assembly 30 is further shown in FIG. 6. In the present embodiment, the armature assembly 30 includes a permanent magnet (not shown in the figure), two armatures 31, an insulation member 34, and a push card. The permanent magnet is formed by a magnetized magnetic steel. In other embodiments, the permanent magnet can also be made of other permanent magnetic materials, such as neodymium iron boron permanent magnets. The permanent magnet has two magnetic poles with fixed polarity, and the polarity of the two magnetic poles is opposite. The two armatures 31 are respectively fixed to the two magnetic poles of the permanent magnet. Each armature 31 is respectively provided with two attracting portions adapted to attract the magnetic driving segments 231. In the magnetic holding state, the coil winding 22 is no longer energized, and the two armatures 31 respectively have one attracting portion attracting the corresponding magnetic driving segment 231 to form a closed magnetic circuit passing through the two magnetic driving segments 231. In the present embodiment, the two armatures 31 are respectively a first armature 32 and a second armature 33. The first armature 32 is respectively provided with two first attracting portions 321 at both ends in the length direction. The second armature 33 is respectively provided with two second attracting portions 331 at both ends in the length direction. The length of the first armature 32 is longer than the length of the second armature 33.

[0095] The insulation member 34 is fixed to the permanent magnet and the two armatures 31. Exemplarily, the insulation member 34 can be an injection molded part. The insulation member 34 wraps the two armatures 31 and the permanent magnet to form an integral whole. Both ends of the first armature 32 and the second armature 33 are located outside the insulation member 34. The two sides of the insulation member 34 along the Z-axis direction close to the first armature 32 are respectively protruded and provided with two insertion shafts 341 extending along the Z-axis direction. The two insertion shafts 341 are coaxial and form a rotation axis of the armature assembly 30. The rotation axis is centrally arranged along the length direction of the armature assembly 30. In FIGS. 3-4, the first armature 32 is away from the coil winding 22.

[0096] The side of the insulation member 34 close to the first armature 32 is provided with a driving portion 35 and an auxiliary push portion 36. That is, the side of the armature assembly 30 away from the coil winding 22 is provided with the driving portion 35 and the auxiliary push portion 36. The driving portion 35 and the auxiliary push portion 36 are both located at one side of the armature assembly 30 in the length direction. In FIG. 6, the driving portion 35 and the auxiliary push portion 36 are respectively located at both ends of the armature assembly 30 in the height direction. The driving portion 35 is lower than the auxiliary push portion 36. The driving portion 35 is provided with a driving slot 351 with an opening upward. The extension direction of the driving slot 351 is parallel to the length direction of the armature assembly 30. The auxiliary push portion 36 is provided with a push slot 361 with an opening toward the permanent magnet. It should be understood that the driving slot 351 and the push slot 361 are respectively provided with openings to facilitate the insertion of the moving contact 41 and the auxiliary moving contact 70 below. In other embodiments, the driving slot 351 and the push slot 361 can also not have openings.

[0097] Still referring to FIG. 1 and FIG. 3-4, the contact portion 200, except for the connection terminals 02 below, is accommodated in the first slot 114, the contact portion 200 includes the movable contact 40 and the fixed contact 50, the movable contact 40 includes the movable spring 41 and the movable spring lead-out piece 42; the movable spring 41 is fixed to the first positioning slot 1141 at one end along its length direction, the other end is adapted to cooperate with the driving part 35 of the armature assembly 30 and is provided with a movable contact point 411, the movable contact point 411 is adapted to be driven by the armature assembly 30 to close or disconnect with the fixed contact 50. The movable spring lead-out piece 42 avoids the movable contact point 411 and is fixed to the movable spring 41 and penetrates one of the first through slots 1121 of the first side wall 112 to form one of the connection terminals 02, the movable spring lead-out piece 42 is provided with an opening downward avoiding slot 421 close to the movable contact point 411, in the embodiment, the movable spring lead-out piece 42 is fixed to the fixed end of the movable spring 41 and cooperates with the first positioning slot 1141 of the base 11 to be fixed in the accommodating member 10, which is located on the side of the movable contact 40 away from the fixed contact 50, when the current flows, the current direction of the movable spring lead-out piece 42 and the current direction of the movable contact 40 are opposite, which helps to improve the contact pressure of the movable contact 40 and the fixed contact 50, thereby helping to avoid the movable contact point 411 and the fixed contact point 51 below from being disconnected and exploding due to electrodynamic repulsion when a fault current occurs.

[0098] The fixed contact 50 extends along the Y axis direction and is fixed in the cooperating slot 1142, the fixed contact 50 is provided with a fixed contact point 51 and penetrates the other first through slot 1121 of the first side wall 112 to form the other connection terminal 02; the movable contact point 411 and the fixed contact point 51 are adapted to close or disconnect along the X axis direction.

[0099] FIG. 3-4 also shows the cooperation schematic diagram of the auxiliary monitoring switch 300 and other parts of the magnetic latching relay, referring to FIG. 1 and FIG. 3-4, the auxiliary monitoring switch 300 is used for monitoring the working state of the armature assembly 30, which includes the auxiliary fixed contact 60 and the auxiliary movable contact 70 which are both adapted to output signals outward; the auxiliary movable contact 70 is adapted to be driven by the armature assembly 30 to move to abut or away from the auxiliary fixed contact 60. In the embodiment, the auxiliary fixed contact 60 is fixed to one of the yokes 23.

[0100] Figure 8 shows a schematic view of the auxiliary static contact 60 fixed to the yoke 23, the auxiliary static contact 60 is provided with an auxiliary static contact portion 61, a bending portion 62 and a static lead-out terminal 03, the auxiliary static contact portion 61 is provided with a first side and a second side which are away from each other, the first side is used to abut against the auxiliary dynamic contact 70, and the second side is attached to the yoke 23, in the embodiment, the auxiliary static contact portion 61 is fixed to the side of the yoke 23 which is away from the coil winding 22, specifically, the auxiliary static contact portion 61 is a flat sheet which is attached to the magnetic driving section 231 in parallel, one side surface of the auxiliary static contact portion 61 is attached to the magnetic driving section 231, and the first connecting portion 611 and the second connecting portion 612 which are integrated are provided in the Z-axis direction, the avoiding gap 614 is formed between the first connecting portion 611 and the second connecting portion 612, which is suitable for avoiding the armature assembly 30; in the Z-axis direction, the second connecting portion 612 is farther away from the first end of the yoke 23 than the first connecting portion 611; in the Y-axis direction, the second connecting portion 612 is closer to the arc transition surface 233 of the yoke 23 than the first connecting portion 611; the first connecting portion 611 is fixed to the magnetic driving section 231 of the yoke 23; the second connecting portion 612 is provided with at least two auxiliary static contact points 613 on the side which is away from the magnetic driving section 231, each auxiliary static contact point 613 is arranged in the Y-axis direction and is located at the same height in the Z-axis direction. Therefore, the position where the auxiliary static contact 60 is fixed to the magnetic driving section 231 avoids the arc transition surface 233. In the embodiment, the position where the auxiliary static contact 60 is fixed to the magnetic driving section 231 is close to the first end of the yoke 23 in the Z-axis direction and is at least partially fixed to the protruding portion 2311. The bending portion 62 extends in the X-axis direction, and is connected between the first connecting portion 611 and the static lead-out terminal 03 and located on one side of the connecting section 232 in the Z-axis direction. In a specific implementation, the auxiliary static contact 60 is riveted to the yoke 23, the auxiliary static contact 60 is provided with a rivet hole 6111, and the yoke 23 is provided with a rivet portion 2351 which is matched with the rivet hole 6111. In figure 8, the rivet hole 6111 is a counterbore, and the rivet portion 2351 does not protrude out of the rivet hole 6111. However, it should be understood that in other embodiments, the auxiliary static contact 60 can also be fixed to the yoke 23 by other ways, such as welding, clamping, etc.

[0101] As shown in FIGS. 9-10, the auxiliary moving contact 70 comprises an auxiliary moving spring 71 and a leading piece 72. The auxiliary moving spring 71 extends along the Z-axis direction. One end of the auxiliary moving spring 71 is fixed to the bottom wall 111 of the accommodating member 10 to form a fixed end, and the other end forms a swing portion 711. The auxiliary moving spring 71 is provided with contact branches 712 equal in number to the auxiliary stationary contacts 613 and corresponding to the auxiliary stationary contacts 613 one by one. One end of each contact branch 712 is fixed to the bottom wall 111 of the accommodating member 10, and the other end is provided with an auxiliary moving contact 7111 adapted to abut against the auxiliary stationary contact 613 and spaced from the adjacent contact branch 712. The other end of each contact branch 712 away from the bottom wall 111 forms the swing portion 711. In this embodiment, the auxiliary moving contact 7111 is adapted to close or open the auxiliary stationary contact 613 along the X-axis direction. The auxiliary moving spring 71 is further provided with a pushing portion 713. One end of the pushing portion 713 is fixed to the swing portion 711, and the other end is adapted to be inserted into the pushing groove 361 to be directly pushed by the auxiliary pushing portion 36. In this embodiment, the pushing portion 713 is at least partially inclined with respect to the X-axis direction and the Z-axis direction. In this embodiment, the pushing portion 713 comprises pushing branches equal in number to the contact branches 712, and the pushing branches are integrally formed with the other end of the contact branches 712 away from the fixed portion 73. The leading piece 72 is provided with a fixed portion 73, a moving leading portion 74, and a moving leading terminal 04. In this embodiment, the fixed portion 73 is fixed to the accommodating member 10 and the fixed end of the auxiliary moving spring 71, mainly to the bottom end of the contact branch 712. In this embodiment, the fixed portion 73 is fixed to the bottom wall 111. FIG. 5 shows a schematic view of the auxiliary moving contact 70 after installation. The fixed portion 73 mainly cooperates with the first limiting portion 1112 and is fixedly inserted into the first limiting portion 1112 along the Z-axis direction. In FIG. 9, the moving leading portion 74 is located on the side of the fixed portion 73 facing the auxiliary stationary contact 60. One end of the moving leading portion 74 is fixed to the fixed portion 73, and the other end is close to the bent portion 62 of the auxiliary stationary contact 60 and connected to the moving leading terminal 04. The stationary leading terminal 03 and the moving leading terminal 04 both extend along the Y-axis direction and are flush in the Z-axis direction. In this embodiment, as shown in FIGS. 3-4, the stationary leading terminal 03 and the moving leading terminal 04 respectively pass through the two second through grooves 1122 of the first side wall 112. The moving leading portion 74 is a flat sheet perpendicular to the Y-axis direction, which is adapted to be inserted between the second limiting portion 1113 and the first side wall 112 and adapted to abut against the first side wall 112.

[0102] The assembly process of the magnetic latching relay of this embodiment is as follows:

[0103] The stationary contact 50 is inserted into the fitting groove 1142 from the opening and one end penetrates through one of the first through grooves 1121 of the first side wall 112 to form a connection terminal 02.

[0104] The fixed part 73 of the auxiliary movable contact 70 is inserted into the gap of the first limiting part 1112, and the movable leading part 74 of the auxiliary movable contact 70 is inserted into the gap between the second limiting part 1113 and the first side wall 112, so that the first limiting part 1112 can limit the displacement of the fixed part 73 along the X-axis direction, the second limiting part 1113 cooperates with the first side wall 112 to limit the displacement of the movable leading part 74 along the Y-axis direction, and the movable leading terminal 04 of the auxiliary movable contact 70 penetrates one of the second through grooves 1122 of the first side wall 112;

[0105] The armature assembly 30 is placed into the base 11, the insertion shaft 341 of the armature assembly 30 is inserted into the first insertion hole 1111, the driving part 35 of the armature assembly 30 penetrates the through opening 1131 of the partition wall 113 and extends into the first groove 114, and the pushing part 713 of the auxiliary movable contact 70 is inserted into the pushing groove 361 of the auxiliary pushing part 36.

[0106] The fixed end of the movable contact 40 is inserted into the first positioning groove 1141, the movable spring leading piece 42 of the movable contact 40 penetrates the first through groove 1121 of the first side wall 112 to form the connection terminal 02, and the swinging end of the movable contact 40 is inserted into the driving groove 351 of the driving part 35, and the driving part 35 also penetrates the avoiding groove 421 of the movable spring leading piece 42.

[0107] The auxiliary static contact 60 is fixed to the yoke 23 close to the first side wall 112, that is, the second magnetic driving section 235, the coil assembly 20 is placed into the second groove 115, and the signal terminal 01 of the coil assembly 20 penetrates the third through groove 1123, the coil winding 22 abuts against the limiting strip 1152, the two yokes 23 are respectively inserted into the two second positioning grooves 1151, and the static leading terminal 03 of the auxiliary static contact 60 penetrates the other second through groove 1122 of the first side wall 112.

[0108] Subsequently, the base 11 is sleeved into the outer cover 12 along the Y-axis direction and is fixedly connected with the outer cover 12. It should be understood that the sequence of each part during installation can be adjusted as needed.

[0109] After installation, referring to FIGS. 3-4, the contact part 200 and the coil winding 22 are respectively located on both sides of the first plane in the X-axis direction, and the first plane is perpendicular to the X-axis direction and passes through the first axis. The signal terminal 01, the static leading terminal 03 and the movable leading terminal 04 are located at the same height along the Z-axis direction at one end close to the opening of the base 11, and are located on the side close to the opening of the first side wall 112.

[0110] The working process of the embodiment is as follows:

[0111] When the signal terminal 01 receives the first pulse signal, the coil assembly 20 drives the armature assembly 30 to rotate from the second position to the first position, as shown in FIG. 3, one first attraction part 321 attracts the first magnetic driving section 234, one second attraction part 331 attracts the second magnetic driving section 235, and the driving part 35 drives the movable contact 411 to close the static contact 51; the auxiliary driving part 36 drives the auxiliary movable contact 7111 to open the auxiliary static contact 613.

[0112] When the signal terminal 01 receives the second pulse signal, the polarity of the two yokes 23 in the coil assembly 20 changes, and the coil assembly 20 drives the armature assembly 30 to rotate from the first position to the second position, as shown in FIG. 4, the other second attraction part 331 attracts the first magnetic driving section 234, the other first attraction part 321 attracts the second magnetic driving section 235, and the driving part 35 drives the movable contact 411 to open the static contact 51. The auxiliary driving part 36 drives the auxiliary movable contact 7111 to close the auxiliary static contact 613.

[0113] Since the yoke 23 is usually fixed to the end face of the coil winding 22 and is fixedly inserted into the accommodating member 10 together with the coil winding 22, in the embodiment, the auxiliary static contact 60 is fixed to the yoke 23, which can be installed and positioned simultaneously when the yoke 23 is installed, avoiding the problem of needing to install the auxiliary static contact 60 again, and facilitating assembly, thereby solving the problem of difficult assembly and positioning of small parts, and further avoiding the problem of easy scratching of the auxiliary static contact 60 when the auxiliary static contact 60 is installed on the base 11. More preferably, the stability of the yoke 23 and the coil body on the base 11 is utilized, so that the auxiliary static contact 60 is directly supported by the yoke 23 to obtain strength and stability, thereby eliminating the need to form a mounting part on the accommodating member 10, so that the structure of the accommodating member 10 is simple, easy to form and saves materials. In addition, it is also beneficial to reduce the volume of the accommodating member 10 and the miniaturization design of the magnetic latching relay to better meet the use requirements and reduce the cost.

[0114] In the embodiment, since only the auxiliary movable contact 70 needs to be installed, the original condition that two installation positions are provided on the accommodating member 10 to install the auxiliary static contact 60 and the auxiliary movable contact 70 is changed to only one installation position, and the installation of the auxiliary movable contact 70 only needs to consider that the auxiliary movable contact 70 can reliably separate from the auxiliary static contact 60 and ensure that the auxiliary movable contact 70 can avoid the armature assembly 30 and other structures of the coil assembly 20, so that the space for installing the auxiliary monitoring switch 300 as a whole is effectively reduced without increasing the volume of the accommodating member 10. In addition, the auxiliary monitoring switch 300 in the technical solution occupies less space compared to the standard auxiliary monitoring switch 300, and the position of the terminal of the auxiliary monitoring switch 300 can be adjusted as needed, and the structure design is simpler.

[0115] In the embodiment, the first side of the auxiliary static contact part 61 is used to abut against the auxiliary moving contact 70, and the second side thereof away from the auxiliary moving contact 70 abuts against the yoke 23. When the auxiliary moving contact 70 abuts against the auxiliary static contact part 61, the auxiliary static contact part 61 is supported by the yoke 23, and the stability of the auxiliary static contact part 61 in the contact direction of the auxiliary moving contact 70 is further improved, so that the abutment between the auxiliary moving contact 70 and the auxiliary static contact part 61 is reliable.

[0116] In the embodiment, the coil assembly 20 includes the coil winding 22 arranged on one side of the armature assembly 30 along the X-axis direction, and the auxiliary static contact part 60 is fixed to the side of the yoke 23 away from the coil winding 22. Compared with being fixed to the side of the yoke 23 facing the coil winding 22, the auxiliary static contact part 60 is more likely to avoid the coil winding 22, and the distance between the coil winding 22 and the armature assembly 30 (along the X-axis direction) can not be too large, thereby reducing the occupied space of the magnetic latching relay in the X-axis direction.

[0117] In the embodiment, the yoke 23 is provided with a magnetic driving segment 231 extending perpendicularly to the X-axis direction, and the auxiliary static contact part 60 is fixed to the side of the magnetic driving segment 231 away from the coil winding 22. The magnetic driving segment 231 has a large surface area, which helps to improve the connection strength and stability of the auxiliary static contact part 60 after being fixed to the magnetic driving segment 231. Furthermore, compared with the form that the auxiliary static contact part 60 is fixed to the connecting segment 232 of the yoke 23, the auxiliary monitoring switch 300 occupies less space in the Y-axis direction. The auxiliary moving contact 7111 is adapted to be closed or disconnected with the auxiliary static contact 613 along the X-axis direction, so that when the auxiliary moving contact 7111 is closed with the auxiliary static contact 613, the auxiliary static contact 613 can be supported by the magnetic driving segment 231, and the structure is more stable.

[0118] In the embodiment, the auxiliary static contact part 61 is a flat sheet abutting parallel to the magnetic driving segment 231, which is conducive to reducing the occupied space of the auxiliary static contact part 61 in the X-axis direction, so as to avoid interference with the movement of the armature assembly 30.

[0119] In the embodiment, the connection between the magnetic driving segment 231 and the connecting segment 232 has a circular arc transition surface 233, and the position where the auxiliary static contact part 60 is fixed to the magnetic driving segment 231 avoids the circular arc transition surface 233, so that the auxiliary static contact part 60 and the yoke 23 have a larger connection area, and the fixing strength of the auxiliary static contact part 60 and the yoke 23 is improved.

[0120] In the embodiment, the yoke 23 extends along the Z-axis direction; the position where the auxiliary static contact part 60 is fixed to the magnetic driving segment 231 is close to the first end of the yoke 23 along the Z-axis direction. Compared with being arranged close to the middle of the yoke 23, the auxiliary static contact part 60 is more likely to avoid the armature assembly 30 in the Z-axis direction, and the fixing operation of the auxiliary static contact part 60 and the yoke 23 is also easier to implement.

[0121] In this embodiment, the magnetic drive section 231 is provided with a protrusion 2311 protruding in the Z-axis direction relative to the connecting section 232 at the first end of the yoke 23, and the auxiliary static contact 60 is at least partially fixed to the protrusion 2311. On the one hand, this makes the auxiliary static contact 60 more easily avoid the armature assembly 30 in the Z-axis direction. On the other hand, this makes the fixed position more easily avoid the circular arc transition surface 233 of the yoke 23, so that the connection between the auxiliary static contact 60 and the yoke 23 is more stable. In addition, it also makes the auxiliary static contact 60 and the yoke 23 have a larger connection area, thereby improving the fixed strength.

[0122] In this embodiment, an avoidance gap 614 is formed between the first connecting portion 611 and the second connecting portion 612, which faces the second yoke 23 and is adapted to avoid the armature assembly 30. The second connecting portion 612 is farther away from the first end of the yoke 23 than the first connecting portion 611. In the Y-axis direction, the second connecting portion 612 is closer to the circular arc transition surface 233 of the yoke 23 than the first connecting portion 611. The first connecting portion 611 is fixed to the yoke 23. The auxiliary static contact point 613 is arranged on the second connecting portion 612. On the one hand, this makes the auxiliary static contact 60 more easily avoid the armature assembly 30 in the Y-axis direction and the Z-axis direction. On the other hand, this makes the first connecting portion 611 can be farther away from the circular arc transition surface 233 of the yoke 23, thereby improving the connection stability between the first connecting portion 611 and the yoke 23. In addition, arranging the second connecting portion 612 closer to the circular arc transition surface 233 is beneficial to avoid interference of the second connecting portion 612 to the movement of the armature assembly 30.

[0123] In this embodiment, the auxiliary static contact 60 is also provided with a static lead-out terminal 03 and a bending portion 62. The bending portion 62 extends in the X-axis direction and is connected between the first connecting portion 611 and the static lead-out terminal 03 and located on one side of the connecting section 232 in the Z-axis direction. On the one hand, this makes full use of the space on one side of the connecting section 232 in the Z-axis direction, so as to avoid the auxiliary static contact 60 expanding the occupied space of the magnetic latching relay in the Z-axis direction. On the other hand, this makes the static lead-out terminal 03 close to the coil assembly 20, thereby being more conducive to achieving electrical isolation between the weak current terminals (including the terminals of the coil assembly 20 and the auxiliary monitoring switch 300) of the magnetic latching relay and the strong current terminals (here mainly refers to the connecting terminal 02 of the contact portion 200) of the magnetic latching relay. In addition, connecting the static lead-out terminal 03 to the bending portion 62 is beneficial to save the length of the bending portion 62, thereby saving materials and costs.

[0124] In this embodiment, the auxiliary static contact 60 is riveted to the yoke 23, which is a simpler process and has a stable structure. In this embodiment, the riveting hole 6111 is a counterbore, and the riveting portion 2351 does not protrude into the riveting hole 6111, which is more conducive to reducing the occupied space of the auxiliary static contact 61 in the X-axis direction.

[0125] In the embodiment, the auxiliary moving contact 70 is provided with an auxiliary moving spring member 71 extending along the Z-axis direction. Compared with the auxiliary moving spring member 71 extending along the Y-axis direction, the auxiliary monitoring switch 300 occupies a smaller space along the Y-axis direction, and the force arm of the auxiliary moving contact 70 is longer, which is beneficial to reduce stress concentration and improve service life.

[0126] In the embodiment, the auxiliary stationary contact 60 is provided with at least two auxiliary stationary contact points 613, each auxiliary stationary contact point 613 is located at the same height along the Z-axis direction; the auxiliary moving spring member 71 is provided with a contact branch 712 corresponding to the number of auxiliary stationary contact points 613, one end of each contact branch 712 is fixedly connected with the fixed part 73, and the other end is provided with an auxiliary moving contact point 7111 adapted to abut against the auxiliary stationary contact point 613; one end of each contact branch 712 away from the fixed part 73 forms a swing part 711, on the one hand, the arrangement of multiple auxiliary moving and stationary contact points 51 can improve the connection reliability of the auxiliary monitoring switch 300, and is also beneficial to the processing of the auxiliary moving contact 70 and the auxiliary stationary contact 60, on the other hand, it is also beneficial to the deformation of the auxiliary moving contact 70 along the X-axis direction, improves the connection reliability and prolongs the service life; the auxiliary stationary contact points 613 are located at the same height along the Z-axis direction, so that the contact pressure of each auxiliary moving contact point 7111 and each auxiliary stationary contact point 613 is consistent.

[0127] In the embodiment, one end of the pushing part 713 is fixedly connected with the swing part 711 of the auxiliary moving spring member 71, and the other end is adapted to be driven by the armature assembly 30, so that only the pushing part 713 of the entire auxiliary moving contact 70 is closer to the side where the armature 31 is located, and the auxiliary moving spring member 71 can be arranged closer to the side where the auxiliary stationary contact 60 is located, so as to avoid affecting the movement of the armature assembly 30. Since the pushing part 713 is located at one end of the auxiliary moving contact, only the driving structure for driving the pushing part 713 needs to be arranged on one side of the armature assembly 30 along the Z-axis direction, and the other positions of the armature assembly 30 along the Z-axis direction can be well used for avoiding the auxiliary moving spring member 71; the structure of the pushing part 713 also makes the pushing part 713 deformable along the X-axis direction, so as to provide the auxiliary moving contact point 7111 with a contact reaction force towards the auxiliary stationary contact point 613, which is beneficial to ensure the stable contact between the auxiliary moving contact point 7111 and the auxiliary stationary contact point 613.

[0128] In the embodiment, the fixed part 73 is fixedly connected to the bottom wall 111, which is easy to install and makes the length between the swing part 711 and the fixed end of the auxiliary moving spring member 71 longer, which is more beneficial to reduce the stress concentration of the auxiliary moving spring member 71 and improve the service life.

[0129] In the embodiment, the auxiliary movable contact 70 is further provided with a movable lead-out terminal 04 and a movable lead-out portion 74 located on the side of the fixed portion 73 facing the auxiliary stationary contact 60, one end of which is fixedly connected with the fixed portion 73, and the other end is close to the bending portion 62 and connected with the movable lead-out terminal 04. On the one hand, the movable lead-out terminal 04 can be close to the signal terminal 01 of the coil assembly 20 for installation, which is conducive to realizing the electrical isolation between the weak current terminals (including the terminals of the coil assembly 20 and the terminals of the auxiliary monitoring switch 300) and the strong current terminals (mainly referring to the connecting terminal 02 of the contact portion 200 below) of the magnetic latching relay. On the other hand, it can also avoid the influence of multiple grooves of the accommodating member 10 on the strength of the accommodating member 10. The stationary lead-out terminal 03 and the movable lead-out terminal 04 extend along the Y-axis direction and are flush in the Z-axis direction, on the one hand, the stationary lead-out terminal 03 and the movable lead-out terminal 04 do not need to be bent complicatedly, which reduces the molding difficulty, material cost and improves the service life, on the other hand, the wiring path on the PCB board is simpler.

[0130] In the embodiment, the movable lead-out portion 74 is a flat sheet perpendicular to the Y-axis direction, which is conducive to reducing the occupied space of the movable lead-out portion 74 in the Y-axis direction. The accommodating member 10 is provided with a first limiting portion 1112 for limiting the displacement of the fixed portion 73 along the X-axis direction and a second limiting portion 1113 cooperating with the inner wall of the accommodating member 10 to limit the displacement of the movable lead-out portion 74 along the Y-axis direction, so that the auxiliary movable contact 70 is limited in the X-axis direction and the Y-axis direction, further improving the structural stability of the auxiliary movable contact 70, and this also means that the movable lead-out portion 74 abuts against the first side wall 112, which can limit and improve the strength of the movable lead-out portion 74.

[0131] In the embodiment, the armature assembly 30 rotates around the rotation axis extending along the Z-axis direction, and the coil assembly 20 includes a coil winding 22 extending along the Y-axis direction and two yokes 23 arranged along the Y-axis direction. The structure of the whole magnetic circuit system is simple, the layout is reasonable, and the space occupation is small.

[0132] In the embodiment, generally, if the armature assembly 30 drives the movable contact 40 by driving a separate push card, the area of the yoke 23 on the side of the contact portion 200 along the X-axis direction is generally used as the movement space of the push card. If the auxiliary monitoring switch 300 needs to be installed on the side of the armature 31 along the Y-axis direction, a swing arm needs to be additionally led out from the armature assembly 30 to push the auxiliary monitoring switch 300, and the swing arm also needs to bypass the armature 31 in the armature assembly 30, resulting in a more complex structure, more material consumption, and larger volume occupation. In the embodiment, the driving portion 35 and the auxiliary pushing portion 36 are integrally formed on the armature assembly 30, so that the driving portion 35 can be reasonably designed and processed to avoid the space for installing the auxiliary monitoring switch 300, and the auxiliary pushing portion 36 with a small structure is also used to drive the auxiliary movable contact 70 in the auxiliary monitoring switch 300 to move, which is simple in structure, less in material consumption, good in molding, and does not need to increase the volume of the magnetic latching relay. In the scheme, the driving portion 35 and the auxiliary pushing portion 36 are integrally arranged on the armature assembly 30, which is simple in structure, easy to mold, and conducive to reducing the production cost. In addition, the driving portion 35 and the auxiliary pushing portion 36 are stable relative to the armature assembly 30, so that the shaking of the movable contact 40 and the auxiliary movable contact 70 during breaking can be reduced, the arc striking characteristics of the breaking arc can be avoided, the contact ablation and the uncontrolled arc ablation of other components can be reduced, and the like.

[0133] In the embodiment, the contact portion 200 and the coil winding 22 are respectively located on the two sides of the first plane along the X-axis direction, and the auxiliary stationary contact 60 is fixedly connected to one of the yokes 23, so that the contact portion 200, the coil winding 22, and the auxiliary monitoring switch 300 are away from each other along the X-axis direction, the electrical distance between the weak current terminal of the coil assembly 20, the weak current terminal of the auxiliary monitoring switch 300, and the strong current terminal of the contact portion 200 is kept in a larger range, the electrical isolation problem is improved, and the isolation of the strong and weak current terminals is facilitated. The side of the armature assembly 30 away from the coil winding 22 is provided with the auxiliary pushing portion 36 and the driving portion 35, which is conducive to avoiding the auxiliary monitoring switch 300. The auxiliary pushing portion 36 is suitable for directly driving the auxiliary movable contact 70, and compared with the scheme of arranging a push card between the auxiliary pushing portion 36 and the auxiliary movable contact 70, the space required along the Y-axis direction is smaller, and the problem of jamming of the push card after long-term operation is avoided.

[0134] In the embodiment, in the magnetic holding state, the two armatures 31 have one attracted part respectively to attract the corresponding magnetic driving section 231 to form a closed magnetic circuit passing through the two magnetic driving sections 231, the closed magnetic circuit passes from one magnetic pole of the permanent magnet, through one attracted part, one magnetic driving section 231, the core, the other magnetic driving section 231 and the other attracted part, back to the other magnetic pole of the permanent magnet, compared with the closed magnetic circuit passing through only one magnetic driving section 231, the closed magnetic circuit of the technical solution has greater magnetic attraction and more stable magnetic circuit; the permanent magnet can also make the attracted part and the magnetic driving section 231 still hold when the coil assembly 20 is powered off; the insulating part 34 is provided with an auxiliary pushing part 36 and a driving part 35, which is easy to process and form.

[0135] In the embodiment, the auxiliary monitoring switch 300 is located between the contact part 200 and the coil winding 22 along the X-axis direction, and the static lead-out terminal 03 and the dynamic lead-out terminal 04 are also located between the signal terminal 01 and the connection terminal 02 along the X-axis direction, which ensures the creepage distance between the signal terminal 01 and the connection terminal 02 without increasing the length in the X-axis direction. The signal terminal 01, the static lead-out terminal 03 and the dynamic lead-out terminal 04 are located at the same height along the Z-axis direction at one end close to the opening, and are located on one side of the first side wall 112 close to the opening, so that the signal terminal 01, the static lead-out terminal 03 and the dynamic lead-out terminal 04 are all inserted downward from the opening of the base 11, therefore, the slot on the first side wall 112 can not be opened very long along the Z-axis direction, which reduces the weakening of the strength of the first side wall 112, and the contact part 200, the coil assembly 20 and the auxiliary monitoring switch 300 can be directly placed into the opening of the base 11 during installation, which is convenient and labor-saving, and is also conducive to the magnetic holding relay being connected to the PCB along the Y-axis direction.

[0136] Embodiment 2

[0137] The structure of embodiment 2 is basically the same as that of embodiment 1, except that the structure of the auxiliary static contact 60, as shown in FIG. 11, in the embodiment, the auxiliary static contact part 61 does not include the first connecting part 611 and the second connecting part 612, the auxiliary static contact point 613 is located between the position where the auxiliary static contact part 61 is fixed to the magnetic driving section 231 and the circular arc transition surface 233 along the Y-axis direction, when the auxiliary dynamic contact point 7111 contacts the auxiliary static contact point 613, the auxiliary static contact 60 has an electrical path, and the position where the auxiliary static contact 60 is fixed to the magnetic driving section 231 is located outside the electrical path. The auxiliary static contact 60 is also provided with a static lead-out terminal 03 and a bending part 62, the bending part 62 extends along the X-axis direction, and is connected between the auxiliary static contact part 61 and the static lead-out terminal 03 and located on one side of the connecting section 232 along the Z-axis direction.

[0138] In the embodiment, the auxiliary static contact 613 is located between the position where the auxiliary static contact part 61 is fixed to the magnetic driving section 231 and the circular-arc transition surface 233 along the Y-axis direction, which is beneficial to realize that the position where the auxiliary static contact part 61 is fixed to the magnetic driving section 231 is located outside the electrical path, and to make the fixed position further away from the circular-arc transition surface 233 of the yoke 23, so that the connection between the auxiliary static contact part 61 and the yoke 23 is more stable.

[0139] In the embodiment, when the auxiliary moving contact 7111 contacts the auxiliary static contact 613, the auxiliary static contact part 61 has an electrical path, the position where the auxiliary static contact part 61 is fixed to the magnetic driving section 231 is located outside the electrical path, and the current does not pass through the position where the auxiliary static contact part 61 is fixed to the magnetic driving section 231 to enter the yoke 23 when the auxiliary monitoring switch 300 is closed. Therefore, without the need to set an insulation structure between the auxiliary static contact part 61 and the magnetic driving section 231, the current of the auxiliary monitoring switch 300 can be prevented from affecting the magnetic loop in the yoke 23, and the complexity of the structure is reduced.

[0140] In the embodiment, the auxiliary static contact part 60 is further provided with a static lead terminal 03 and a bending part 62, the bending part 62 extends along the X-axis direction and is connected between the auxiliary static contact part 61 and the static lead terminal 03 and located on one side of the connecting section 232 along the Z-axis direction. On the one hand, the space on one side of the connecting section 232 along the Z-axis direction is fully utilized to avoid the auxiliary static contact part 60 from expanding the occupied space of the magnetic latching relay in the Z-axis direction. On the other hand, the static lead terminal 03 is close to the coil assembly 20, so that it is more beneficial to realize the electrical isolation between the weak current terminals (including the terminals of the coil assembly 20 and the terminals of the auxiliary monitoring switch 300) of the magnetic latching relay and the strong current terminals (mainly referring to the connecting terminal 02 of the contact part 200) of the magnetic latching relay. In addition, the static lead terminal 03 is connected to the bending part 62, which is beneficial to save the length of the bending part 62 and save materials and costs.

[0141] Embodiment 3

[0142] Embodiment 3 is basically the same as embodiment 1 in structure, except that the structure of the auxiliary static contact part 60. Referring to FIG. 12, in the embodiment, the auxiliary static contact part 61 does not include the first connecting part 611 and the second connecting part 612, the magnetic driving section 231 of the yoke 23 is punched to form an installation groove 2352 with an opening away from the coil winding 22 and a riveting part 2351 protruding from the installation groove 2352 on the side away from the coil winding 22; the auxiliary static contact part 60 is installed in the installation groove 2352 and is provided with a riveting hole 6111 matched with the riveting part 2351. The number of the riveting part 2351 is three, which is close to the auxiliary static contact part 61 and is away from the circular-arc transition surface 233. When the auxiliary moving contact 7111 contacts the auxiliary static contact 613, the auxiliary static contact part 60 has an electrical path, and the position where the auxiliary static contact part 60 is fixed to the magnetic driving section 231 is located outside the electrical path.

[0143] In the embodiment, the magnetic driving section 231 of the yoke 23 is punched to form an installation groove 2352 facing away from the coil winding 22 and a riveting portion 2351 protruding from the installation groove 2352, the auxiliary static contact 60 is installed in the installation groove 2352 and is provided with a riveting hole 6111 matched with the riveting portion 2351, the riveting portion 2351 can have a greater length in the X-axis direction through the punching process, so that the auxiliary static contact 60 can also have a greater thickness, and the occupied space in the X-axis direction is small when applied to the magnetic latching relay.

[0144] In the embodiment, when the auxiliary moving contact 7111 contacts the auxiliary static contact 613, the auxiliary static contact 60 has an electrical path, the position where the auxiliary static contact 60 is fixedly connected with the magnetic driving section 231 is located outside the electrical path, and the current does not pass through the position where the auxiliary static contact 60 is fixedly connected with the magnetic driving section 231 to enter the yoke 23 when the auxiliary monitoring switch 300 is closed. Therefore, without the need to set an insulation structure between the auxiliary static contact 60 and the magnetic driving section 231, the current of the auxiliary monitoring switch 300 can be prevented from affecting the magnetic loop in the yoke 23, and the complexity of the structure is reduced.

[0145] In the embodiment, the auxiliary static contact 60 is also provided with a static lead-out terminal 03 and a bending portion 62, the bending portion 62 extends along the X-axis direction, is connected between the auxiliary static contact portion 61 and the static lead-out terminal 03, and is located on one side of the connecting section 232 along the Z-axis direction. On the one hand, the space on the one side of the connecting section 232 along the Z-axis direction is fully utilized to avoid the auxiliary static contact 60 expanding the occupied space of the magnetic latching relay in the Z-axis direction. On the other hand, the static lead-out terminal 03 is close to the coil assembly 20, so that it is more conducive to realize the electrical isolation between the weak current terminals (including the terminals of the coil assembly 20 and the terminals of the auxiliary monitoring switch 300) of the magnetic latching relay and the strong current terminals (mainly referring to the connecting terminal 02 of the contact portion 200) of the magnetic latching relay. In addition, the static lead-out terminal 03 is connected to the bending portion 62, which is conducive to saving the length of the bending portion 62, saving materials and costs.

[0146] The above description and embodiment are used to explain the protection scope of the present disclosure, but do not constitute a limitation on the protection scope of the present disclosure. Through the inspiration of the present disclosure or the above embodiment, those skilled in the art can obtain the modification, equivalent replacement or other improvement of the embodiment of the present disclosure or one part of the technical features thereof by combining the common knowledge, the ordinary technical knowledge in the art and / or the prior art through logical analysis, reasoning or limited test, which shall be included in the protection scope of the present disclosure.

Claims

1. A magnetic latching relay characterized by, The utility model relates to a magnetic latching relay, comprising: a housing (10); a coil assembly (20) comprising a yoke (23) fixed relative to the housing (10); an armature assembly (30) disposed outside the coil assembly (20) and moving in response to a change in polarity of the yoke (23); an auxiliary monitoring switch (300) comprising an auxiliary static contact (60) and an auxiliary moving contact (70) both externally connected to output signals; the auxiliary static contact (60) is fixed to the yoke (23), and the auxiliary moving contact (70) is adapted to be driven by the armature assembly (30) to be in contact with or away from the auxiliary static contact (60).

2. The magnetic latching relay of claim 1, wherein, The auxiliary static contact (60) is provided with an auxiliary static contact part (61) having a first side and a second side facing away from each other, the first side being used to contact the auxiliary moving contact (70), and the second side abutting the yoke (23).

3. The magnetic latching relay as described in claim 2, characterized in that, The coil assembly (20) comprises a coil winding (22) disposed on one side of the armature assembly (30) along the X-axis direction, and the coil winding (22) is fixed relative to the housing (10); the yoke (23) is fixed to the end face of the coil winding (22), and the auxiliary static contact part (61) is fixed to one side of the yoke (23) away from the coil winding (22).

4. The magnetic latching relay as described in claim 3, characterized in that, The yoke (23) is provided with a magnetic driving segment (231) and a connecting segment (232) connected as one and both being flat plates, the magnetic driving segment (231) is perpendicular to the X-axis direction, the connecting segment (232) is perpendicular to the Y-axis direction and is fixed to the end face of the coil winding (22); the auxiliary static contact (60) is fixed to the magnetic driving segment (231) and is provided with an auxiliary static contact point (613); the auxiliary moving contact (70) is provided with an auxiliary moving contact point (7111) adapted to be closed or disconnected with the auxiliary static contact point (613) along the X-axis direction, wherein the Y-axis direction and the X-axis direction are perpendicular to each other.

5. The magnetic latching relay as described in claim 4, characterized in that, The auxiliary static contact part (61) is a flat plate abutting parallel to the magnetic driving segment (231).

6. The magnetic latching relay as described in claim 4, characterized in that, The connection between the magnetic driving segment (231) and the connecting segment (232) has a circular arc transition surface (233), and the position where the auxiliary static contact (60) is fixed to the magnetic driving segment (231) avoids the circular arc transition surface (233).

7. The magnetic latching relay as described in claim 4, characterized in that, The yoke (23) extends along the Z-axis direction; the position where the auxiliary static contact (60) is fixed to the magnetic driving segment (231) is close to the first end of the yoke (23) along the Z-axis direction, wherein the Z-axis direction is perpendicular to the Y-axis direction and the X-axis direction.

8. The magnetic latching relay as claimed in claim 7, characterized in that, The first end of the yoke (23), the magnetic driving segment (231) is provided with a protruding part (2311) protruding along the Z-axis direction relative to the connecting segment (232), and the auxiliary static contact (60) is at least partially fixed to the protruding part (2311).

9. The magnetic latching relay as claimed in claim 7, characterized in that, The auxiliary static contact part (61) is provided with a first connecting part (611) and a second connecting part (612) connected as a whole along the Z-axis direction, a clearance gap (614) suitable for avoiding the armature assembly (30) is formed between the first connecting part (611) and the second connecting part (612); along the Z-axis direction, the second connecting part (612) is farther away from the first end of the yoke (23) than the first connecting part (611); along the Y-axis direction, the second connecting part (612) is closer to the circular arc transition surface (233) of the yoke (23) than the first connecting part (611); the first connecting part (611) is fixedly connected with the yoke (23); the auxiliary static contact (613) is arranged on the second connecting part (612).

10. The magnetic latching relay as claimed in claim 9, characterized in that, The auxiliary static contact part (61) is provided with a first connecting part (611) and a second connecting part (612) connected as a whole along the Z-axis direction, a clearance gap (614) suitable for avoiding the armature assembly (30) is formed between the first connecting part (611) and the second connecting part (612); along the Z-axis direction, the second connecting part (612) is farther away from the first end of the yoke (23) than the first connecting part (611); along the Y-axis direction, the second connecting part (612) is closer to the circular arc transition surface (233) of the yoke (23) than the first connecting part (611); the first connecting part (611) is fixedly connected with the yoke (23); the auxiliary static contact (613) is arranged on the second connecting part (612).

11. The magnetic latching relay as claimed in claim 7, characterized in that, When the auxiliary moving contact (7111) is in contact with the auxiliary static contact (613), the auxiliary static contact (60) has an electrical path, and the position where the auxiliary static contact (60) is fixedly connected with the magnetic driving section (231) is outside the electrical path.

12. The magnetic latching relay as claimed in claim 11, characterized in that, The auxiliary static contact part (61) is provided with a first connecting part (611) and a second connecting part (612) connected as a whole along the Z-axis direction, a clearance gap (614) suitable for avoiding the armature assembly (30) is formed between the first connecting part (611) and the second connecting part (612); along the Z-axis direction, the second connecting part (612) is farther away from the first end of the yoke (23) than the first connecting part (611); along the Y-axis direction, the second connecting part (612) is closer to the circular arc transition surface (233) of the yoke (23) than the first connecting part (611); the first connecting part (611) is fixedly connected with the yoke (23); the auxiliary static contact (613) is arranged on the second connecting part (612).

13. The magnetic latching relay as described in claim 12, characterized in that, The auxiliary static contact (613) is located between the position where the auxiliary static contact part (61) is fixedly connected with the magnetic driving section (231) and the circular arc transition surface (233) along the Y-axis direction.

14. The magnetic latching relay as described in claim 3, characterized in that, The magnetic driving section (231) of the yoke (23) is punched to form a mounting groove (2352) with an opening away from the coil winding (22) and a riveting part (2351) protruding from the mounting groove (2352) on the side away from the coil winding (22); the auxiliary static contact (60) is mounted in the mounting groove (2352) and is provided with a riveting hole (6111) matched with the riveting part (2351).

15. A latching relay according to any one of claims 1-13, c h a r a c t e r i z e d i n that The auxiliary static contact (60) is riveted with the yoke (23).

16. The magnetic latching relay as claimed in claim 15, characterized in that, The auxiliary static contact (60) is provided with a riveting hole (6111), and the yoke (23) is provided with a riveting part (2351) matched with the riveting hole (6111); the riveting hole (6111) is a counterbore, and the riveting part (2351) does not protrude into the riveting hole (6111).

17. The magnetic latching relay as claimed in claim 7, characterized in that, The auxiliary moving contact (70) comprises an auxiliary moving spring part (71) extending along the Z-axis direction, the auxiliary moving spring part (71) is in the shape of a flat sheet parallel to the auxiliary static contact part (61), one end of the auxiliary moving spring part (71) along the Z-axis direction is fixedly connected with the accommodating part (10), and the other end constitutes a swing part (711), and the auxiliary moving contact (7111) is arranged on the swing part (711) of the auxiliary moving spring part (71).

18. The magnetic latching relay as claimed in claim 17, characterized in that, The auxiliary static contact (60) is provided with at least two auxiliary static contact points (613); the at least two auxiliary static contact points (613) are located at the same height along the Z-axis direction; the auxiliary moving spring member (71) is provided with contact branches (712) equal in number and corresponding one by one to the auxiliary static contact points (613), one end of the at least two contact branches (712) is fixed to each other and to the accommodating member (10), the other end is spaced from each other and is respectively provided with an auxiliary moving contact point (7111) adapted to abut against the auxiliary static contact point (613); one end of the at least two contact branches (712) away from the fixed end forms a swing part (711).

19. The magnetic latching relay as claimed in claim 17, characterized in that, The auxiliary moving spring member (71) is further provided with a pushing part (713), one end of the pushing part (713) is fixed to the swing part (711), and the other end is adapted to be driven by the armature assembly (30).

20. The magnetic latching relay as claimed in claim 19, characterized in that, The accommodating member (10) comprises a base (11) and an outer cover (12), one end of the base (11) along the Z-axis direction is provided with an opening, and the outer cover (12) is covered outside the base (11); the base (11) is provided with a bottom wall (111) perpendicular to the Z-axis direction, and the first end of the yoke (23) is away from the bottom wall (111); the auxiliary moving spring member (71) is fixed to the bottom wall (111).

21. The magnetic latching relay as claimed in claim 20, characterized in that, The auxiliary moving contact (70) further comprises a leading-out member (72); the leading-out member (72) is provided with a fixed part (73), a moving leading-out terminal (04) and a moving leading-out part (74), the fixed part (73) is fixed to the fixed end of the auxiliary moving spring member (71); the auxiliary static contact (60) is further provided with a static leading-out terminal (03), the static leading-out terminal (03) and the moving leading-out terminal (04) both extend along the Y-axis direction and are flush in the Z-axis direction; the moving leading-out part (74) is located on the side of the fixed part (73) facing the auxiliary static contact (60), one end of the moving leading-out part (74) is fixed to the fixed part (73), and the other end is connected to the moving leading-out terminal (04).

22. The magnetic latching relay as claimed in claim 21, characterized in that, The moving leading-out part (74) is a flat sheet perpendicular to the Y-axis direction; the accommodating member (10) is provided with a first side wall (112) perpendicular to the Y-axis direction and a first limiting part (1112) and a second limiting part (1113) protruding from the bottom wall (111), the first limiting part (1112) is used to limit the displacement of the fixed part (73) along the X-axis direction, and the second limiting part (1113) cooperates with the first side wall (112) to limit the displacement of the moving leading-out part (74) along the Y-axis direction.

23. The magnetic latching relay as described in claim 2, characterized in that, The armature assembly (30) is adapted to rotate relative to the coil assembly (20) about a rotation axis extending along the Z-axis direction; the coil assembly (20) comprises a coil winding (22) extending along the Y-axis direction and two yokes (23) arranged along the Y-axis direction, and the auxiliary static contact (60) is fixed to one of the yokes (23).

24. The magnetic latching relay as claimed in claim 23, characterized in that, The contact portion (200) comprises a movable contact (40) provided with a movable contact point (411) and a stationary contact (50) provided with a stationary contact point (51); the armature assembly (30) is provided with an integral driving portion (35) and an auxiliary pushing portion (36), the movable contact (40) is adapted to be driven by the driving portion (35) to make the movable contact point (411) and the stationary contact point (51) close or disconnect along the X-axis direction; the auxiliary stationary contact (60) is adapted to be driven by the auxiliary driving portion (35) to abut against or move away from the auxiliary stationary contact (60).

25. The magnetic latching relay as claimed in claim 24, characterized in that, The contact portion (200) and the coil winding (22) are respectively located on both sides of a first plane along the X-axis direction, the first plane is perpendicular to the X-axis direction and passes through the rotation axis; the side of the armature assembly (30) away from the coil winding (22) is provided with the driving portion (35) and the auxiliary pushing portion (36), and the auxiliary pushing portion (36) is adapted to directly drive the auxiliary movable contact (70).

26. The magnetic latching relay as claimed in claim 25, characterized in that, The coil assembly (20) and the armature assembly (30) form a magnetic circuit portion (100) having a magnetic retention function; the coil assembly (20) is provided with two magnetic driving sections (231); the armature assembly (30) comprises a permanent magnet, two armatures (31) and an insulation member (34), the two armatures (31) are respectively fixed to two magnetic poles of the permanent magnet, each armature (31) is respectively provided with two suction portions adapted to be attracted to the magnetic driving sections (231), in the magnetic retention state, the two armatures (31) respectively have one suction portion attracted to the corresponding magnetic driving section (231) to form a closed magnetic circuit passing through the two magnetic driving sections (231); the insulation member (34) is fixed to the permanent magnet; the insulation member (34) is provided with the driving portion (35) and the auxiliary pushing portion (36).

27. The magnetic latching relay as claimed in claim 25, characterized in that, The coil winding (22) is provided with a signal terminal (01); the contact portion (200) is provided with a connection terminal (02); the auxiliary stationary contact (60) and the auxiliary movable contact (70) are respectively provided with a stationary lead terminal (03) and a movable lead terminal (04); the accommodating member (10) comprises a base (11) and an outer cover (12), one end of the base (11) along the Z-axis direction is provided with an opening, and the outer cover (12) covers the outside of the base (11); the coil winding (22) is fixed in the base (11), the base (11) is provided with a first side wall (112) perpendicular to the Y-axis direction, the signal terminal (01), the stationary lead terminal (03) and the movable lead terminal (04) are all located at the same height along the Z-axis direction and are all located on the side of the first side wall (112) close to the opening.

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