Magnetic latching relay

Abstract

The utility model discloses a magnetic latching relay, which comprises an accommodating piece, a coil assembly, an armature assembly and an auxiliary monitoring switch, and is characterized in that the coil assembly comprises a yoke fixed relative to the accommodating piece; the armature assembly is arranged outside the coil assembly and moves in response to the polarity change of the yoke; the auxiliary monitoring switch comprises an auxiliary static contact piece and an auxiliary movable contact piece which are both suitable for outputting signals outwards; the auxiliary static contact is fixedly connected to the yoke, and the auxiliary moving contact is suitable for being driven by the armature assembly to move to abut against or be away from the auxiliary static contact. The auxiliary static contact piece is simple to assemble, and the accommodating piece is simple in structure and small in size.

Description

Technical Field

[0001] The utility model relates to the field of magnetic latching relays, in particular to a magnetic latching relay. Background Art

[0002] An auxiliary monitoring switch is generally provided in a magnetic holding relay within a housing. The auxiliary monitoring switch includes an auxiliary moving contact and an auxiliary static contact. In the prior art, the auxiliary static contact is usually relatively small in size, and its assembly and positioning within the housing is more difficult, and usually results in a more complex structure and a larger volume of the housing. Utility Model Content

[0003] The purpose of the present invention is to overcome the above-mentioned defects or problems in the background technology and to provide a magnetic latching relay, wherein the auxiliary static contact is easy to assemble and the receiving part has a simple structure and a small size.

[0004] To achieve the above objectives, the present invention and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0005] Technical solution one and its preferred embodiment provide a magnetic holding relay, comprising: a container; a coil assembly, which includes a yoke fixed relative to the container; an armature assembly, which is arranged outside the coil assembly and moves in response to the polarity change of the yoke; an auxiliary monitoring switch, which includes an auxiliary static contact and an auxiliary moving contact, both of which are used to be externally connected to output signals to the outside; the auxiliary static contact is fixed to the yoke, and the auxiliary moving contact is suitable for being driven by the armature assembly to move to contact or move away from the auxiliary static contact.

[0006] Based on technical solution one, technical solution two is also provided. In technical solution two and its preferred embodiment, the auxiliary static contact is provided with an auxiliary static contact portion, and the auxiliary static contact portion is provided with a first side and a second side which are opposite to each other, the first side is used to contact the auxiliary moving contact, and the second side is abutted against the yoke.

[0007] Based on Technical Solution 2, Technical Solution 3 is also provided. In Technical Solution 3 and its preferred embodiment, the coil assembly includes 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 the end face of the coil winding, and the auxiliary static contact portion is fixed to the side of the yoke facing away from the coil winding.

[0008] Based on technical solution three, technical solution four is also provided. In technical solution four and its preferred embodiment, the yoke is provided with a magnetic drive section and a connecting section which are connected as one and are both flat sheets. The magnetic drive section is perpendicular to the X-axis direction, and the connecting section is perpendicular to the Y-axis direction and is fixed to the end face of the coil winding; the auxiliary static contact is fixed to the magnetic drive section and is provided with an auxiliary static contact; the auxiliary moving contact is provided with an auxiliary moving contact, and the auxiliary moving contact is suitable for closing or disconnecting with the auxiliary static contact along the X-axis direction.

[0009] Based on Technical Solution 4, there is also provided Technical Solution 5. In Technical Solution 5 and its preferred embodiment, the auxiliary static contact portion is in the shape of a flat sheet parallel to and in contact with the magnetic drive section.

[0010] Based on technical solution four, technical solution six is ​​also provided. In technical solution six and its preferred embodiment, the connection between the magnetic drive section and the connecting section has an arc transition surface, and the position where the auxiliary static contact is fixed to the magnetic drive section avoids the arc transition surface.

[0011] Based on technical solution six, technical solution seven is also provided. In technical solution seven and its preferred embodiment, the yoke extends along the Z-axis direction; the position where the auxiliary static contact is fixed to the magnetic drive section is set close to the first end of the yoke along the Z-axis direction.

[0012] Based on Technical Solution Seven, Technical Solution Eight is also provided. In Technical Solution Eight and its preferred embodiment, at the first end of the yoke, the magnetic drive section is provided with a protrusion protruding along the Z-axis direction relative to the connecting section, and the auxiliary static contact is at least partially fixed to the protrusion.

[0013] Based on Technical Solution Eight, Technical Solution Nine is also provided. In Technical Solution Nine and its preferred embodiments, the auxiliary static contact portion is provided with a first connecting portion and a second connecting portion connected as one body along the Z-axis direction, and an avoidance gap suitable for avoiding the armature assembly is formed between the first connecting portion and the second connecting portion; along the Z-axis direction, the second connecting portion is farther away from the first end of the yoke than the first connecting portion; along 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 fixedly connected to the yoke; and the auxiliary static contact is provided on the second connecting portion.

[0014] Based on Technical Solution Nine, Technical Solution Ten is also provided. In Technical Solution Ten and its preferred embodiment, the auxiliary static contact is also provided with 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 along the Z-axis direction.

[0015] Based on Technical Solution 7, Technical Solution 11 is also provided. In Technical Solution 11 and its preferred embodiment, when the auxiliary moving contact contacts the auxiliary static contact, the auxiliary static contact has an electrical path, and the position where the auxiliary static contact is fixed to the magnetic drive section is outside the electrical path.

[0016] Based on technical solution eleven, technical solution twelve is also provided. In technical solution twelve and its preferred embodiment, the auxiliary static contact is also provided with a static lead-out terminal and a bending portion. The bending 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.

[0017] Based on Technical Solution 12, Technical Solution 13 is also provided. In Technical Solution 13 and its preferred embodiment, the auxiliary static contact is located along the Y-axis direction between the position where the auxiliary static contact part and the magnetic drive segment are fixed and the arc transition surface.

[0018] Based on Technical Solution 12, Technical Solution 14 is also provided. In Technical Solution 14 and its preferred embodiment, the side of the magnetic drive section of the yoke facing away from the coil winding is stamped to form a mounting groove with an opening facing away from the coil winding and a riveted portion protruding from the mounting groove; the auxiliary static contact is installed in the mounting groove and is provided with a rivet hole that cooperates with the riveted portion.

[0019] Based on any one of technical solutions one to thirteen, there is also provided a technical solution fifteen. In technical solution fifteen and its preferred embodiment, the auxiliary static contact is riveted to the yoke iron.

[0020] Based on technical solution fifteen, technical solution sixteen is also provided. In technical solution sixteen and its preferred embodiment, the auxiliary static contact is provided with a rivet hole, and the yoke is provided with a rivet portion adapted to the rivet hole; the rivet hole is a countersunk hole, and the rivet portion does not protrude from the rivet hole.

[0021] Based on any one of technical solutions seven to fourteen, technical solution seventeen is also provided. In technical solution seventeen and its preferred embodiment, the auxiliary dynamic contact includes an auxiliary dynamic spring member extending along the Z-axis direction, one end of the auxiliary dynamic spring member along the Z-axis direction is fixedly connected to the accommodating member, and the other end thereof constitutes a swinging portion, the fixed portion is fixed to the accommodating member, and the auxiliary dynamic contact is arranged on the swinging portion of the auxiliary dynamic spring member.

[0022] Based on Technical Solution 17, Technical Solution 18 is also provided. In Technical Solution 18 and its preferred embodiments, the auxiliary static contact is provided with at least two auxiliary static contacts; each auxiliary static contact is located at the same height along the Z-axis direction; the auxiliary dynamic spring is provided with contact branches that are equal to and one-to-one corresponding to the auxiliary static contacts, one end of each contact branch is fixed to the fixed part, and the other end is provided with an auxiliary dynamic contact suitable for abutting against the auxiliary static contact; the end of each contact branch away from the fixed part forms a swinging part.

[0023] Based on Technical Solution 17, Technical Solution 19 is also provided. In Technical Solution 19 and its preferred embodiment, the auxiliary dynamic spring member is also provided with a pushing portion, one end of which is fixedly connected to the swinging portion, and the other end is suitable for being driven by the armature assembly.

[0024] Based on Technical Solution 19, Technical Solution 20 is also provided. In Technical Solution 20 and its preferred embodiment, the accommodating part includes a base and an outer cover, the base is provided with an opening at one end along the Z-axis direction, and the outer cover is provided outside the base; the base is provided with a first side wall perpendicular to the Y-axis direction and a bottom wall perpendicular to the Z-axis direction, the first end of the yoke is away from the bottom wall; the fixing part is fixed to the bottom wall.

[0025] Based on Technical Solution 20, Technical Solution 21 is also provided. In Technical Solution 21 and its preferred embodiment, the auxiliary dynamic contact also includes a lead-out piece; the lead-out piece is provided with a fixed portion, a dynamic lead-out terminal and a dynamic lead-out portion, and the fixed portion is fixedly connected to the fixed end of the auxiliary dynamic spring piece; the static lead-out terminal and the dynamic lead-out terminal both extend along the Y-axis direction and are flush in the Z-axis direction; the dynamic lead-out portion is located on the side of the fixed portion facing the auxiliary static contact, one end of which is fixedly connected to the fixed portion, and the other end is close to the bending portion of the auxiliary static contact and connected to the dynamic lead-out terminal.

[0026] Based on Technical Solution Twenty-one, Technical Solution Twenty-two is also provided. In Technical Solution Twenty-two and its preferred embodiments, the movable lead-out portion is a flat sheet perpendicular to the Y-axis direction; the accommodating part is provided with a first limiting portion and a second limiting portion protruding from the bottom wall, 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.

[0027] Based on technical solution three, technical solution twenty-three is also provided. In technical solution twenty-three and its preferred embodiment, 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 is fixed to one of the yokes.

[0028] Based on Technical Solution Twenty-three, Technical Solution Twenty-four is also provided. Technical Solution Twenty-four and its preferred embodiments further include a contact part, wherein the contact part includes a moving contact and a static contact, the moving contact is provided with a moving contact point, and the static contact is provided with a static contact point; the armature assembly is provided with an integrally formed driving part and an auxiliary pushing part, the moving contact is suitable for being driven by the driving part to close or disconnect the moving contact and the static contact along the X-axis direction; the auxiliary static contact is suitable for being driven by the auxiliary driving part to conflict with or move away from the auxiliary static contact.

[0029] Based on Technical Solution Twenty-four, Technical Solution Twenty-five is also provided. In Technical Solution Twenty-five and its preferred embodiment, the contact part and the coil winding are respectively located on both sides of the first plane along the X-axis direction, and the first plane is perpendicular to the X-axis direction and passes through the rotation axis; the driving part and the auxiliary pushing part are provided on the side of the armature assembly away from the coil winding, and the auxiliary pushing part is suitable for directly driving the auxiliary dynamic contact.

[0030] Based on Technical Solution Twenty-Five, there is also a Technical Solution Twenty-Six. In Technical Solution Twenty-Six and its preferred embodiments, the coil assembly and the armature assembly form a magnetic circuit part, and the magnetic circuit part has a magnetic holding function; the coil assembly is provided with two magnetic drive segments; the armature assembly includes a permanent magnet, two armatures and an insulating member, and the two armatures are respectively fixed to the two magnetic poles of the permanent magnet, and each armature is respectively provided with two attracting parts suitable for attracting the magnetic drive segment. When the magnetic circuit part is in the magnetic holding state, the two armatures respectively have an attracting part that attracts the corresponding magnetic drive segment to form a closed magnetic circuit passing through the two magnetic drive segments; the insulating member is fixed to the permanent magnet; the insulating member is provided with the driving part and the auxiliary pushing part.

[0031] Based on Technical Solution Twenty-Five, Technical Solution Twenty-Seven is also provided. In Technical Solution Twenty-Seven and its preferred embodiments, the coil winding is provided with a signal terminal; the contact part is provided with a connecting terminal; the auxiliary static contact and the auxiliary moving contact are respectively provided with a static lead-out terminal and a moving lead-out terminal; the accommodating part includes a base and an outer cover, the base is provided with an opening at one end along the Z-axis direction, and the outer cover is provided outside the base; the coil winding is fixedly connected to the base, and the base is provided with a first side wall perpendicular to the Y-axis direction, and the signal terminal, the static lead-out terminal and the moving lead-out terminal are all located at the same height along the Z-axis direction, and are all located on the side of the first side wall close to the opening.

[0032] From the above description of the present invention and its preferred embodiments, it can be seen that compared with the prior art, the technical solution of the present invention and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means:

[0033] After continuous observation, experimentation and research, the applicant knows that the reason why the technical problem of "the structure of the container of the magnetic holding relay is usually more complicated and larger in size" in the existing technical solutions is that the auxiliary static contact needs to withstand the abutment force of the auxiliary moving contact, and therefore needs to maintain sufficient strength and stability. In order to ensure the strength of the auxiliary static contact, the container usually needs to be provided with a mounting portion to fix and support the auxiliary static contact. On the one hand, the structure of the container becomes more complicated, difficult to form and save materials. On the other hand, it will also lead to an increase in the volume of the container, which is not conducive to the miniaturization design of the magnetic holding relay to better meet the use requirements.

[0034] Since the yoke is usually fixed to the end face of the coil winding and is fixedly inserted into the accommodating part together with the coil winding, in Technical Solution 1 and its preferred embodiment, the auxiliary static contact is fixed to the yoke, and the auxiliary static contact can be installed and positioned simultaneously when the yoke is installed, avoiding the need to install the auxiliary static contact again. The assembly is simple, thereby solving the problem of difficult assembly and positioning of small parts. In addition, the problem of scraping when the auxiliary static contact is installed with the base can be avoided. Even better, the stability of the yoke and the coil body on the base is also utilized, so that the auxiliary static contact is directly supported by the yoke to obtain strength and stability, so that there is no need to form a mounting portion on the accommodating part, making the structure of the accommodating part simple, easy to form and saving materials. In addition, it is also beneficial to reduce the volume of the accommodating part and the miniaturization design of the magnetic holding relay to better meet usage requirements and reduce costs.

[0035] In technical solution one and its preferred embodiments, since only the auxiliary moving contact needs to be installed, the situation in which two installation positions are originally required on the accommodating part for the installation of the auxiliary static contact and the auxiliary moving contact respectively is changed to only one installation position, and the installation of the auxiliary moving contact only needs to consider the ability to reliably separate from the auxiliary moving contact and ensure that the auxiliary moving contact can avoid other structures of the armature assembly and the coil assembly. Therefore, the space used for the overall installation of the auxiliary monitoring switch is effectively reduced without increasing the volume of the accommodating part; in addition, the auxiliary monitoring switch in this technical solution occupies less space than the standard auxiliary monitoring switch, and the position of the terminal of the auxiliary monitoring switch can be adjusted as needed, and the structural design is simpler.

[0036] In technical solution two and its preferred embodiment, the first side of the auxiliary static contact part is used to contact the auxiliary moving contact, and its second side opposite to it is abutted against the yoke. When the auxiliary moving contact contacts the auxiliary static contact part, the auxiliary static contact part is supported by the yoke, which further makes the auxiliary static contact part stable in the contact direction of the auxiliary moving contact part, so that the contact between the auxiliary moving contact and the auxiliary static contact part is reliable.

[0037] In technical solution three and its preferred embodiment, 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 facing away from the coil winding. Compared with the side of the yoke facing the coil winding, the auxiliary static contact is easier to avoid the coil winding, and the distance between the coil winding and the armature assembly (along the X-axis direction) does not need to be too large, thereby reducing the space occupied by the magnetic holding relay in the X-axis direction.

[0038] In Technical Solution 4 and its preferred embodiment, the yoke is provided with a magnetic drive segment extending perpendicular to the X-axis direction, and the auxiliary static contact is fixed to the side of the magnetic drive segment facing away from the coil winding. Utilizing the advantage of the larger surface area of ​​the magnetic drive segment, this helps to improve the connection strength and stability of the auxiliary static contact after it is fixed to the magnetic drive segment. Furthermore, compared with the form in which the auxiliary static contact is fixed to the connecting segment of the yoke, the auxiliary monitoring switch occupies less space in the Y-axis direction. The auxiliary moving contact is suitable for closing or opening with the auxiliary static contact along the X-axis direction, so that when the auxiliary moving contact and the auxiliary static contact are closed, the auxiliary static contact can be supported by the magnetic drive segment, resulting in a more stable structure.

[0039] In technical solution five and its preferred embodiment, the auxiliary static contact part is in the shape of a flat sheet parallel to the magnetic drive section, which is beneficial to reducing the space occupied by the auxiliary static contact part in the X-axis direction, so as to avoid interference with the movement of the armature assembly.

[0040] In technical solution six and its preferred embodiment, the connection between the magnetic drive section and the connecting section has an arc transition surface, and the position where the auxiliary static contact is fixed to the magnetic drive section avoids the arc transition surface, so that the auxiliary static contact and the yoke have a larger connection area, thereby improving the fixing strength between the auxiliary static contact and the yoke.

[0041] In technical solution seven and its preferred embodiment, the yoke extends along the Z-axis direction; the position where the auxiliary static contact is fixed to the magnetic drive section is close to the first end of the yoke along the Z-axis direction. Compared with being set close to the middle of the yoke, the auxiliary static contact is easier to avoid the armature assembly in the Z-axis direction, and it is also easier to achieve the fixing operation of the auxiliary static contact and the yoke.

[0042] In technical solution eight and its preferred embodiment, at the first end of the yoke, the magnetic drive section is provided with a protrusion protruding relative to the connecting section in the Z-axis direction, and the auxiliary static contact is at least partially fixed to the protrusion. On the one hand, it makes it easier for the auxiliary static contact to avoid the armature assembly in the Z-axis direction. On the other hand, it makes it easier for the fixed position to avoid the arc transition surface of the yoke, so that the connection between the auxiliary static contact and the yoke is more stable. In addition, it can also make the auxiliary static contact and the yoke have a larger connection area, thereby improving the fixing strength.

[0043] In technical solution nine and its preferred embodiment, an avoidance gap suitable for avoiding 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 Y-axis direction, the second connecting part is closer to the arc transition surface of the yoke than the first connecting part; the first connecting part is fixed to the yoke; the auxiliary static contact is provided on the second connecting part, which, on the one hand, makes it easier for the auxiliary static contact to avoid the armature assembly in the Y-axis direction and the Z-axis direction, and on the other hand, makes the first connecting part farther away from the arc transition surface of the yoke, thereby improving the connection stability between the first connecting part and the yoke; in addition, setting the second connecting part closer to the arc transition surface is conducive to avoiding interference of the second connecting part with the movement of the armature assembly.

[0044] In technical solution ten and its preferred embodiment, the auxiliary static contact is also provided with a static lead-out terminal and a bending portion, which 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 along the Z-axis direction. On the one hand, the space on 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, which is more conducive to achieving electrical isolation between the weak-current terminals of the magnetic latching relay (including the terminals of the coil assembly and the terminals of the auxiliary monitoring switch) and the strong-current terminals of the magnetic latching relay (here mainly refers to the connection terminals of the contact part below). 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 consumables and costs.

[0045] In technical solution eleven and its preferred embodiments, when the auxiliary moving contact contacts the auxiliary static contact, the auxiliary static contact has an electrical path, and the position where the auxiliary static contact is fixed to the magnetic drive segment is located outside the electrical path. When the auxiliary monitoring switch is closed, the current does not enter the yoke through the position where the auxiliary static contact is fixed to the magnetic drive segment. Therefore, without setting an insulating structure between the auxiliary static contact and the magnetic drive segment, the current of the auxiliary monitoring switch can be avoided from affecting the magnetic circuit in the yoke, thereby reducing the complexity of the structure.

[0046] In technical solution 12 and its preferred embodiment, the auxiliary static contact is also provided with a static lead-out terminal and a bending portion, which extends along the X-axis direction, is connected between the auxiliary static contact 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 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, which is more conducive to achieving electrical isolation between the weak-current terminals of the magnetic latching relay (including the terminals of the coil assembly and the terminals of the auxiliary monitoring switch) and the strong-current terminals of the magnetic latching relay (here mainly refers to the connection terminals of the contact part below). 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 consumables and costs.

[0047] In technical solution thirteen and its preferred embodiments, the auxiliary static contact is located between the position where the auxiliary static contact part and the magnetic drive segment are fixed and the arc transition surface along the Y-axis direction, which is conducive to realizing that the position where the auxiliary static contact part and the magnetic drive segment are fixed is outside the electrical path, and makes the fixed position farther away from the arc transition surface of the yoke iron, and the connection between the auxiliary static contact part and the yoke iron is more stable.

[0048] In technical solution fourteen and its preferred embodiment, a mounting groove with an opening facing away from the coil winding and a riveted portion protruding from the mounting groove are stamped on the side of the magnetic drive section of the yoke iron facing away from the coil winding. The auxiliary static contact is installed in the mounting groove and is provided with a riveted hole that cooperates with the riveted portion. The stamping process allows the riveted portion to have a longer length in the X-axis direction, thereby also allowing the auxiliary static contact to have a larger thickness, and when applied to a magnetic holding relay, it occupies less space in the X-axis direction.

[0049] In technical solution 15 and its preferred embodiment, the auxiliary static contact is riveted to the yoke, which makes the process simpler and the structure more stable.

[0050] In technical solution sixteen and its preferred embodiment, the rivet hole is a countersunk hole, and the riveted part does not protrude from the rivet hole, which is more conducive to reducing the space occupied by the auxiliary static contact part in the X-axis direction.

[0051] In technical solution seventeen and its preferred embodiment, the auxiliary dynamic contact is provided with an auxiliary dynamic spring extending along the Z-axis direction. Compared with the auxiliary dynamic spring extending along the Y-axis direction, the auxiliary monitoring switch occupies a smaller space in the Y-axis direction, and the auxiliary dynamic contact has a longer force arm, which is beneficial to reduce stress concentration and improve service life.

[0052] In technical solution eighteen and its preferred embodiment, the auxiliary static contact is provided with at least two auxiliary static contacts, and each auxiliary static contact is located at the same height along the Z-axis direction; the auxiliary dynamic spring is provided with contact branches equal to and corresponding to the auxiliary static contacts, one end of each contact branch is fixed to the fixed part, and the other end is provided with an auxiliary dynamic contact suitable for abutting the auxiliary static contact; each contact branch forms a swinging part at one end away from the fixed part. On the one hand, the provision of multiple auxiliary dynamic and static contacts can improve the connection reliability of the auxiliary monitoring switch, and is also beneficial to the processing of the auxiliary dynamic contact and the auxiliary static contact. On the other hand, it is also beneficial to the deformation of the auxiliary dynamic contact along the X-axis direction, thereby improving the connection reliability and extending the service life; each auxiliary static contact is located at the same height along the Z-axis direction so that the contact pressure of each auxiliary dynamic contact and each auxiliary static contact is consistent.

[0053] In technical solution nineteen and its preferred embodiment, one end of the pushing part is fixedly connected to the swinging part, and the other end is suitable for being driven by the armature assembly, so that only the pushing part of the entire auxiliary dynamic contact is closer to the side where the armature is located, and its auxiliary dynamic spring part can be arranged closer to the side where the auxiliary static contact 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 dynamic contact piece, it is only necessary to set a driving structure for driving the pushing part 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 to avoid the auxiliary dynamic spring part.

[0054] In technical solution 20 and its preferred embodiment, the fixed part is fixed to the bottom wall, which is easy to install and makes the length between the swinging part and the fixed end of the auxiliary dynamic spring longer, which is more conducive to reducing the stress concentration phenomenon of the auxiliary dynamic spring and improving the service life.

[0055] In technical solution twenty-one and its preferred embodiment, the dynamic lead-out portion is located on the side of the fixed portion facing the auxiliary static contact, one end of which is fixed to the fixed portion, and the other end is close to the bending portion and connected to the dynamic lead-out terminal. On the one hand, the dynamic 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 of the magnetic latching relay (including the terminals of the coil assembly and the terminals of the auxiliary monitoring switch) and the strong-current terminals of the magnetic latching relay (here mainly refers to the connection terminals of the contact part below); on the other hand, it can also avoid the multiple slots in the container of the magnetic latching relay affecting the strength of the container. Among them, the static lead-out terminal and the dynamic 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 dynamic lead-out terminal do not need to be complicatedly bent, which reduces the difficulty of molding and material costs and increases their service life. On the other hand, it makes the wiring path on the PCB board simpler.

[0056] In technical solution twenty-two and its preferred embodiment, the movable lead-out part is in the shape of a flat sheet perpendicular to the Y-axis direction, which is beneficial to reducing the space occupied by the movable lead-out part in the Y-axis direction. The accommodating part is provided with a first limiting part and a second limiting part. 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 movable lead-out part along the Y-axis direction. In this way, 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. This also means that the movable lead-out part is in contact with the first side wall, and the first side wall can limit the movable lead-out part and increase its strength.

[0057] In technical solution twenty-three and its preferred embodiment, the armature assembly rotates around a 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. The entire magnetic circuit system has a simple structure, a reasonable layout, and occupies little space.

[0058] In technical solution twenty-four and its preferred embodiments, under normal circumstances, if the armature assembly drives the moving contact by driving an independent pushing card, then the area on the side of the yoke facing the contact part along the X-axis direction is usually used as the activity space of the pushing card. If it is necessary to install an auxiliary monitoring switch on the side of the armature along the Y-axis direction, it is necessary to lead out a swing arm 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 consumables and large volume. In this technical solution, the driving part and the auxiliary pushing part are integrally formed in the armature assembly. Through reasonable design and processing, the driving part can avoid the space for installing the auxiliary monitoring switch, and at the same time, the small-structured auxiliary pushing part is used to drive the auxiliary moving contact in the auxiliary monitoring switch to move. The structure is simple, the consumables are small, the molding is easy, and there is no need to increase the volume of the magnetic holding relay. In the present technical solution, a driving part and an auxiliary pushing part are integrally provided on the armature assembly, which has a simple structure, is easy to form and is conducive to reducing production costs. In addition, the driving part and the auxiliary pushing part are relatively stable relative to the armature assembly, thereby reducing the shaking of the moving contact and the auxiliary moving contact during disconnection, avoiding affecting the arc burning characteristics of the disconnecting arc, and reducing hazards such as contact erosion and uncontrolled arc erosion of other components.

[0059] In Technical Solution 25 and its preferred embodiment, the contact portion and the coil winding are respectively located on both 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 portion and the coil winding and the auxiliary monitoring switch are separated from each other in the X-axis direction, so that 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 portion is maintained in a larger range, thereby improving the electrical isolation problem and facilitating the isolation of the strong and weak-current terminals. An auxiliary push portion and a drive portion are provided on the side of the armature assembly facing away from the coil winding, which is conducive to avoiding the auxiliary monitoring switch. The auxiliary push portion is suitable for directly driving the auxiliary moving contact. Compared with the solution of providing a push card between the auxiliary push portion and the auxiliary moving contact, the space required in the Y-axis direction is smaller, and the problem of the push card getting stuck after long-term operation is avoided.

[0060] In technical solution twenty-six and its preferred embodiment, in the magnetic holding state, the two armatures each have an attraction portion that attracts the corresponding magnetic drive segment to form a closed magnetic circuit passing through the two magnetic drive segments. The closed magnetic circuit passes from one magnetic pole of the permanent magnet through an attraction portion, a magnetic drive segment, an iron core, another magnetic drive segment and another attraction portion and returns to the other magnetic pole of the permanent magnet. Compared with the closed magnetic circuit that only passes through one magnetic drive segment, the closed magnetic circuit of this technical solution has a greater magnetic attraction force and a more stable magnetic circuit; the permanent magnet can also keep the attraction portion and the magnetic drive segment attracted when the coil assembly is powered off; the insulating part is provided with an auxiliary pushing portion and a driving portion, which is easy to process and form.

[0061] In Technical Solution 27 and its preferred embodiment, since the auxiliary monitoring switch is located between the contact portion and the coil winding along the X-axis direction, the static lead terminal and the dynamic lead terminal are also located between the signal terminal and the connection terminal along the X-axis direction, thereby ensuring the creepage distance between the signal terminal and the connection terminal without increasing the length in the X-axis direction. The ends of the signal terminal, the static lead terminal, and the dynamic lead terminal near the opening are all located at the same height along the Z-axis direction, and are all located on the side of the first side wall near the opening, so that the signal terminal, the static lead terminal, and the dynamic lead terminal are all inserted downward from the opening of the base. Therefore, the groove on the first side wall does not need to be very long along the Z-axis direction, reducing the weakening of the strength of the first side wall. Moreover, the contact portion, the coil assembly, and the auxiliary monitoring switch can all be directly inserted from the open end of the base during installation, which is convenient and labor-saving to install, and is also conducive to the connection of the magnetic latching relay to the PCB board along the Y-axis direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0063] Figure 1 This is a three-dimensional exploded view of the magnetic latching relay in Example 1 of the present application;

[0064] Figure 2 This is a schematic diagram of the base of Example 1 of the present application;

[0065] Figure 3 This is a top view of the hidden cover of the magnetic latching relay in Example 1 of the present application, wherein the armature assembly is rotated to the first position;

[0066] Figure 4 This is a top view of the hidden cover of the magnetic latching relay in Example 1 of the present application, wherein the armature assembly is rotated to the second position;

[0067] Figure 5 for Figure 3 Cross-sectional view in the AA direction;

[0068] Figure 6 This is a schematic diagram of the armature assembly of Example 1 of the present application;

[0069] Figure 7 This is a schematic diagram of the coil assembly of Example 1 of the present application;

[0070] Figure 8 This is a schematic diagram of the coil assembly and the auxiliary static contact member of Example 1 of the present application;

[0071] Figure 9 This is a schematic diagram of the coil assembly and auxiliary monitoring switch of Example 1 of the present application;

[0072] Figure 10 This is a schematic diagram of the auxiliary movable contact member of Example 1 of the present application;

[0073] Figure 11 Schematic diagram of the yoke and auxiliary static contact member of Example 2 of the present application;

[0074] Figure 12 This is a schematic diagram of the base, yoke and auxiliary static contact of Example 3 of the present application.

[0075] Description of main reference numerals:

[0076] Container 10; base 11; bottom wall 111; first insertion hole 1111; first limiting portion 1112; second limiting portion 1113; third positioning groove 1114; first side wall 112; first through-groove 1121; second through-groove 1122; third through-groove 1123; partition wall 113; through-opening 1131; first groove 114; first positioning groove 1141; matching groove 1142; second groove 115; second positioning groove 1151; Limiting bar 1152; support base 116; outer cover 12; fixing frame 13; second jack 131; magnetic circuit portion 100; coil assembly 20; coil frame 21; retaining wall 211; coil winding 22; yoke 23; magnetic drive section 231; protrusion 2311; connecting section 232; arc transition surface 233; first magnetic drive section 234; second magnetic drive section 235; rivet 2351; mounting slot 2352; signal terminal 01; armature Assembly 30; armature 31; first armature 32; first engaging portion 321; second armature 33; second engaging portion 331; insulating member 34; plug shaft 341; driving portion 35; driving slot 351; auxiliary pushing portion 36; pushing slot 361; contact portion 200; moving contact 40; moving spring 41; moving contact point 411; moving spring lead-out piece 42; avoidance slot 421; static contact 50; static contact 51; connecting terminal 02; auxiliary monitoring switch 3 00; auxiliary static contact 60; auxiliary static contact portion 61; first connecting portion 611; rivet hole 6111; second connecting portion 612; auxiliary static contact 613; avoidance gap 614; bending portion 62; static lead-out terminal 03; auxiliary moving contact 70; auxiliary moving spring member 71; swinging portion 711; auxiliary moving contact 7111; contact branch 712; pushing portion 713; lead-out member 72; fixing portion 73; moving lead-out portion 74; moving lead-out terminal 04. DETAILED DESCRIPTION

[0077] In the claims and the specification, except in the embodiments, the terms "X-axis direction," "Y-axis direction," and "Z-axis direction" simply refer to the fact that features having one of these directions are perpendicular to features having another direction, and do not require that they be implemented in accordance with the "X-axis direction," "Y-axis direction," and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction is perpendicular to both the Y-axis direction and the Z-axis direction. The X-axis direction can be divided into 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 the description, unless otherwise defined, the terms "first", "second" or "third", etc. are intended to distinguish different objects rather than to describe a specific order.

[0079] In the claims and the specification, unless otherwise specified, the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships are based on the directions and positional relationships shown in the accompanying drawings and are only for the convenience of simplifying the description, and do not imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction.

[0080] In the claims and description, unless otherwise specified, the term "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method in which there is no displacement relationship or relative rotation relationship between the two parties, that is, including non-detachable fixed connection, detachable fixed connection, integral connection, and fixed connection through other devices or elements.

[0081] In the claims and the description, unless otherwise defined, the terms "include", "have" and their variations mean "including but not limited to".

[0082] In the claims and the description, unless otherwise defined, the term "provided with" means that the technical feature thereafter is part of the technical feature therefor.

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

[0084] In the claims and the specification, unless otherwise defined, the term “connected as one body” means that two parts are directly connected without any other parts between them.

[0085] In the claims and the specification, unless otherwise defined, the term "extension direction" refers to the length direction of the object, including portions of the object that are bent or inclined in the length direction.

[0086] See also Figure 1 , Figure 1 The structure of a magnetic latching relay is shown. The magnetic latching relay includes an accommodating part 10 , a magnetic circuit portion 100 , a contact portion 200 and an auxiliary monitoring switch 300 .

[0087] A magnetic latching relay is used to receive electrical signals to control the on / off state of an external circuit. Specifically, the magnetic latching relay in this embodiment is a magnetic latching relay that controls the on / off state of an external circuit by receiving pulsed electrical signals. In this embodiment, the pulsed electrical signals can be divided into a first pulsed electrical signal and a second pulsed electrical signal. The first pulsed electrical signal and the second pulsed electrical signal are used to control the switching or on / off state of the external circuit, respectively.

[0088] The container 10 includes a base 11, an outer cover 12 and a fixing frame 13. Figure 1 The structure of the container 10 in this embodiment is shown. Figure 2 The structure of the base 11 in this embodiment is shown. Figure 1-2The base 11 is a box-shaped structure with an opening at one end. 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 this embodiment, the base 11 is open at one end along the Z-axis direction, and the outer cover 12 is arranged outside the base 11 and is fixedly connected to the base 11. In this embodiment, the opening is located at the upper end of the base 11, and 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 with openings upward, two second through-grooves 1122 with openings upward, and three third through-grooves 1123 with openings upward along the Y-axis direction. The opening ends of the first through-grooves 1121, the second through-grooves 1122, and the third through-grooves 1123 are all located at the same height along the Z-axis direction; a partition wall 113 is provided inside the base 11, and the partition wall 113 separates the base 11 It is divided into a first groove 114 and a second groove 115 along the X-axis direction, and the partition wall 113 is provided with a through-opening 1131 near the first side wall 112. The bottom wall 111 forms the bottom of the first groove 114 and the second groove 115, wherein 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 rectangular structures. A first positioning groove 1141 and a matching groove 1142 are provided in the first groove 114. The first positioning groove 1141 is located at one end of the first groove 114 along the Y-axis direction, and the matching groove 1142 is located at the other end of the first groove 114 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 bottom of the second groove 115 is provided with a protruding shaft near the partition wall 113, and a first insertion hole 1111 extending along the Z-axis direction is formed in the protruding shaft. Two L-shaped second positioning grooves 1151 are also arranged along the Y-axis direction in the second groove 115. The second positioning grooves 1151 can limit the yoke 23 described below along the X-axis direction and the Y-axis direction. A plurality of limiting bars 1152 extending along the X-axis direction and arranged along the Y-axis direction are also provided on the side of the second groove 115 away from the first groove 114. The limiting bars 1152 have arc-shaped surfaces and are suitable for contacting the coil winding 22 described below to limit the sliding of the coil winding 22. The second through-groove 1122 and the third through-groove 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-groove 1121 and the third through-groove 1123 along the X-axis direction. Bottom wall 111 further includes a first stopper 1112 and a second stopper 1113 within second groove 115. These first stopper 1112 and second stopper 1113 are located adjacent to first side wall 112 and cooperate with first side wall 112 to form an L-shaped third positioning groove 1114 for limiting a portion of auxiliary movable contact 70, described below, along the X- and Y-axes. Base 11 further includes a support seat 116 located within second groove 115, adjacent to partition wall 113.

[0089] See also Figure 1 The outer cover 12 is a rectangular parallelepiped 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. One end along the Y-axis is opened, and the outer cover 12 can be inserted into the outside of the base 11 along the Y-axis and sealed and fixed with the base 11 to block the opening of the base 11.

[0090] The fixing frame 13 is supported on the support base 116 and fixed to the support base 116. The fixing frame 13 is provided with a second socket 131 coaxial with the first socket 1111. After the outer cover 12 is fixed to the base 11, the fixing frame 13 is also limited by the outer cover 12 in the Z-axis direction.

[0091] See also Figure 3-4 , Figure 3-4 A schematic diagram shows the magnetic circuit portion 100 installed in the accommodating member 10 . The magnetic circuit portion 100 (except for the signal terminal 01 and the driving portion 35 described below) is basically accommodated in the second slot 115 . The magnetic circuit portion 100 includes a coil assembly 20 and an armature assembly 30 .

[0092] Figure 1 , a schematic diagram of the coil assembly 20 is shown. The coil assembly 20 is placed 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, an iron core (not shown in the figure) and two yokes 23. Figure 3-4 , the coil frame 21 is fixed in the second slot 115, the coil frame 21 extends along the Y-axis direction and is provided with a center hole extending along the Y-axis direction (not shown in the figure), and the coil frame 21 is provided with retaining walls 211 at both ends along the Y-axis direction. The coil winding 22 is wound on the coil frame 21 and is 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 part 10. In this embodiment, the coil winding 22 is fixed in the base 11. The coil winding 22 is connected to the signal terminal 01, and the signal terminal 01 is fixed to the retaining wall 211 of the coil frame 21 and passes through the third through slot 1123 of the first side wall 112 along the Y-axis direction. The iron core extends along the Y-axis direction and is inserted into the center hole of the coil frame 21. The two yokes 23 are respectively fixed to the two ends of the iron core, that is, the two yokes 23 are fixed to the end faces of the coil winding 22, see Figure 7 , Figure 7A schematic diagram of the coil assembly 20 is shown, in which the yoke 23 extends along the Z-axis direction, and the two yokes 23 form magnetic drive sections 231 perpendicular to the X-axis direction at one end away from the iron core. The yoke 23 is also provided with a connecting section 232 connected to the magnetic drive section 231 as a whole, and the connecting section 232 is perpendicular to the Y-axis direction and fixed to the end face of the coil. In this embodiment, the magnetic drive section 231 and the connecting section 232 are both flat sheets, and the connection between the magnetic drive section 231 and the connecting section 232 has an arc transition surface 233. At the first end (upper end) of the yoke 23 away from the bottom wall 111, the magnetic drive section 231 is provided with a protrusion 2311 protruding along the Z-axis direction relative to the connecting section 232. The two magnetic drive segments 231 are arranged along the Y-axis direction. The two magnetic drive segments 231 are respectively the first magnetic drive segment 234 and the second magnetic drive segment 235. When the signal terminal 01 receives a pulse electrical signal, the polarities of the first magnetic drive segment 234 and the second magnetic drive segment 235 are opposite, and when the signal terminal 01 switches to receive the first pulse electrical signal and the second pulse electrical signal, the first magnetic drive segment 234 and the second magnetic drive segment 235 change between the S pole and the N pole respectively.

[0093] See also Figure 1 , Figure 1 The structure of the armature assembly 30 is shown in FIG. The armature assembly 30 is located outside the coil assembly 20 and rotates relative to the coil assembly 20 about a rotation axis extending along the Z-axis in response to a change in polarity of the magnetic drive segment 231. In this 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 spaced apart along the X-axis.

[0094] like Figure 1 and Figure 6 As shown, Figure 6 The structure of the armature assembly 30 is further shown in the figure. In this embodiment, the armature assembly 30 includes a permanent magnet (not shown in the figure), two armatures 31, an insulating 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 a neodymium iron boron permanent magnet. The permanent magnet has two magnetic poles with fixed polarity, and the polarities of the two magnetic poles are opposite. The two armatures 31 are respectively fixed to the two magnetic poles of the permanent magnet. Each armature 31 is provided with two attracting parts suitable for attracting the magnetic drive segment 231. When the magnetic circuit part 100 is in the magnetic holding state, the coil winding 22 is no longer energized, and the two armatures 31 each have an attracting part that attracts the corresponding magnetic drive segment 231 to form a closed magnetic circuit passing through the two magnetic drive segments 231. In this embodiment, the two armatures 31 are respectively a first armature 32 and a second armature 33. The first armature 32 is provided with two first engaging portions 321 at both ends of its length, while the second armature 33 is provided with two second engaging portions 331 at both ends of its length. The first armature 32 is longer than the second armature 33.

[0095] The insulator 34 is fixedly connected to the permanent magnet and the two armatures 31. For example, the insulator 34 can be an injection-molded part. It encapsulates the two armatures 31 and the permanent magnet to form a single unit. Both ends of the first armature 32 and the second armature 33 are located outside the insulator 34. Protruding from either side of the insulator 34 along the Z-axis, near the first armature 32, are inserted shafts 341 extending along the Z-axis. The two inserted shafts 341 are coaxial and form the rotation axis of the armature assembly 30, which is centered along the length of the armature assembly 30. Figure 3-4 In the embodiment, the first armature 32 is away from the coil winding 22 .

[0096] A driving portion 35 and an auxiliary pushing portion 36 are provided on the side of the insulating member 34 close to the first armature 32, that is, a driving portion 35 and an auxiliary pushing portion 36 are provided on the side of the armature assembly 30 away from the coil winding 22, and the driving portion 35 and the auxiliary pushing portion 36 are both located on one side of the length direction of the armature assembly 30. Figure 6 In the embodiment, the driving portion 35 and the auxiliary pushing portion 36 are located at opposite ends of the armature assembly 30 in the height direction, with the driving portion 35 being lower than the auxiliary pushing portion 36. The driving portion 35 is provided with a driving slot 351 that opens upward, and the direction in which the driving slot 351 extends is parallel to the length of the armature assembly 30. The auxiliary pushing portion 36 is provided with a pushing slot 361 that opens toward the permanent magnet. It should be understood that the openings in the driving slot 351 and the pushing slot 361 are provided to facilitate the subsequent insertion of the movable spring 41 and the auxiliary movable contact 70, respectively. In other embodiments, the driving slot 351 and the pushing slot 361 may not have openings.

[0097] See also Figure 1 and Figure 3-4, all parts of the contact portion 200 except the connecting terminal 02 mentioned below are accommodated in the first groove 114, and the contact portion 200 includes a moving contact 40 and a static contact 50, and the moving contact 40 includes a moving spring piece 41 and a moving spring lead-out piece 42; one end of the moving spring piece 41 along its length direction is fixed to the first positioning groove 1141, and the other end is suitable for cooperating with the driving part 35 of the armature assembly 30 and is provided with a moving contact 411, and the moving contact 411 is suitable for being driven by the armature assembly 30 to close or disconnect with the static contact 50. The movable spring lead-out piece 42 avoids the movable contact 411 and is fixedly connected to the movable spring piece 41 and passes through one of the first through grooves 1121 of the first side wall 112 to form one of the connecting terminals 02. The movable spring lead-out piece 42 is provided with a downward-opening avoidance groove 421 near the movable contact 411. In this embodiment, the movable spring lead-out piece 42 is fixedly connected to the fixed end of the movable spring piece 41 and cooperates with the first positioning groove 1141 of the base 11 to be fixed in the accommodating part 10. It is located on the side of the movable contact 40 away from the static contact 50. When current is passed through, the current direction of the movable spring lead-out piece 42 is opposite to the current direction of the movable contact 40. The Ampere force formed on the movable contact 40 helps to increase the contact pressure between the movable contact 40 and the static contact 50, thereby preventing the movable contact 411 and the static contact 51 mentioned below from being disconnected and exploding due to electric repulsion when a large fault current occurs.

[0098] The static contact 50 extends along the Y-axis direction and is fixed in the matching groove 1142. The static contact 50 is provided with a static contact point 51 and passes through another first through groove 1121 of the first side wall 112 to form another connecting terminal 02; the moving contact 411 and the static contact 51 are suitable for closing or opening along the X-axis direction.

[0099] Figure 3-4 Also shown is a schematic diagram of the coordination of the auxiliary monitoring switch 300 and other parts of the magnetic latching relay, see Figure 1 as well as Figure 3-4 The auxiliary monitoring switch 300 is used to monitor the operating status of the armature assembly 30. It includes an auxiliary static contact 60 and an auxiliary movable contact 70, both of which are adapted to output signals. The auxiliary static contact 60 is fixedly attached to the yoke 23, and the auxiliary movable contact 70 is adapted to be driven by the armature assembly 30 to move into contact with or away from the auxiliary static contact 60. In this embodiment, the auxiliary static contact 60 is fixedly attached to one of the yokes 23.

[0100] Figure 8A schematic diagram of the auxiliary static contact 60 being fixed to the yoke 23 is shown. The auxiliary static contact 60 is provided with an auxiliary static contact portion 61, a bent 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 facing away from each other. The first side is used to contact the auxiliary dynamic contact 70, and the second side is abutted against the yoke 23. In this embodiment, the auxiliary static contact portion 61 is fixed to the side of the yoke 23 facing away from the coil winding 22. Specifically, the auxiliary static contact portion 61 is in the shape of a flat sheet parallel to the magnetic drive segment 231. One side surface of the auxiliary static contact portion 61 is abutted against the magnetic drive segment 231, and a first connecting portion 611 and a second connecting portion connected as one body are provided along the Z-axis direction. 612, a clearance notch 614 is formed between the first connection portion 611 and the second connection portion 612, adapted to avoid the armature assembly 30; along the Z-axis direction, the second connection portion 612 is further away from the first end of the yoke 23 than the first connection portion 611; along the Y-axis direction, the second connection portion 612 is closer to the arc transition surface 233 of the yoke 23 than the first connection portion 611; the first connection portion 611 is fixedly connected to the magnetic drive section 231 of the yoke 23; at least two auxiliary static contacts 613 are provided on the side of the second connection portion 612 facing away from the magnetic drive section 231, each auxiliary static contact 613 being arranged along the Y-axis direction and at the same height along the Z-axis. Therefore, the position where the auxiliary static contact 60 is fixed to the magnetic drive section 231 avoids the arc transition surface 233. In this embodiment, the position where the auxiliary static contact 60 is fixed to the magnetic drive section 231 is located near the first end of the yoke 23 along the Z-axis direction and is at least partially fixed to the protrusion 2311. The bent portion 62 extends along the X-axis, connecting between the first connecting portion 611 and the static lead terminal 03 and located on one side of the connecting section 232 along the Z-axis. Specifically, the auxiliary static contact 60 is riveted to the yoke 23. During riveting, the auxiliary static contact 60 is provided with a rivet hole 6111, and the yoke 23 is provided with a rivet portion 2351 that matches the rivet hole 6111. Figure 8 In the embodiment, the rivet hole 6111 is a countersunk hole, and the rivet portion 2351 does not protrude from 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 means, such as welding, clamping, etc.

[0101] Figure 9-10 The structure of the auxiliary moving contact 70 is shown in FIG. Figure 9-10The auxiliary movable contact 70 includes an auxiliary movable spring 71 and a lead 72. The auxiliary movable spring 71 extends along the Z-axis. One end of the auxiliary movable spring 71 along the Z-axis is fixedly connected to the bottom wall 111 of the accommodating member 10, forming a fixed end, and the other end forms a swinging portion 711. The auxiliary movable spring 71 is provided with contact branches 712, which are equal in number to and corresponding to the auxiliary static contacts 613. Each contact branch 712 has one end fixedly connected to the bottom wall 111 of the accommodating member 10 and the other end provided with an auxiliary movable contact 7111 adapted to abut against the auxiliary static contact 613. The end of each contact branch 712, away from the bottom wall 111, forms the swinging portion 711. In this embodiment, the auxiliary movable contact 7111 is adapted to close or open with the auxiliary static contact 613 along the X-axis. The auxiliary dynamic spring member 71 is also provided with a pushing portion 713, one end of the pushing portion 713 is fixedly connected to the swinging portion 711, and the other end is suitable for being inserted into the pushing groove 361 so as to be directly pushed by the auxiliary pushing portion 36. In this embodiment, the pushing portion 713 is at least partially inclined relative to the X-axis direction and the Z-axis direction. In this embodiment, the pushing portion 713 includes a number of pushing branches equal to the number of each contact branch 712, and the pushing branches are integrally formed with the end of the contact branch 712 away from the fixed portion 73. The lead-out member 72 is provided with a fixed portion 73, a dynamic lead-out portion 74 and a dynamic lead-out terminal 04. In this embodiment, the fixed portion 73 is fixed to the accommodating member 10 and the fixed end of the auxiliary dynamic spring member 71 is fixed, mainly to the bottom end of the contact branch 712. In this embodiment, the fixed portion 73 is fixed to the bottom wall 111, Figure 5 FIG. 7 shows a schematic diagram of the auxiliary movable contact 70 after installation. The fixing 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. Figure 9 In the embodiment, the dynamic lead portion 74 is located on the side of the fixed portion 73 facing the auxiliary static contact 60, one end of which is fixedly connected to the fixed portion 73, and the other end is close to the bent portion 62 of the auxiliary static contact 60 and connected to the dynamic lead terminal 04. The static lead terminal 03 and the dynamic lead terminal 04 both extend along the Y-axis direction and are flush in the Z-axis direction. In this embodiment, see Figure 3-4 The static lead terminal 03 and the dynamic lead terminal 04 respectively pass through the two second through slots 1122 of the first side wall 112. The dynamic lead portion 74 is a flat plate perpendicular to the Y-axis direction, which is suitable for being inserted between the second limiting portion 1113 and the first side wall 112 and suitable for being close to the first side wall 112.

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

[0103] Insert the static contact 50 from the opening into the matching groove 1142 and have one end pass through one of the first through grooves 1121 of the first side wall 112 to form the connecting terminal 02;

[0104] Insert the fixed portion 73 of the auxiliary movable contact 70 into the gap of the first limiting portion 1112, and insert the movable lead portion 74 of the auxiliary movable contact 70 into the gap between the second limiting portion 1113 and the first side wall 112, so that the first limiting portion 1112 can limit the displacement of the fixed portion 73 along the X-axis direction, and the second limiting portion 1113 cooperates with the first side wall 112 to limit the displacement of the movable lead portion 74 along the Y-axis direction. The movable lead terminal 04 of the auxiliary movable contact 70 passes through one of the second through-slots 1122 of the first side wall 112;

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

[0106] Insert the fixed end of the movable contact 40 into the first positioning groove 1141, and the movable spring lead-out piece 42 of the movable contact 40 passes through the first through groove 1121 of the first side wall 112 to form the connection terminal 02. The swing end of the movable contact 40 is inserted into the driving groove 351 of the driving part 35, and the driving part 35 also passes through the avoidance groove 421 of the movable spring lead-out piece 42.

[0107] The auxiliary static contact 60 is fixed to the yoke 23 near the first side wall 112, that is, the second magnetic drive section 235. The coil assembly 20 is placed in the second slot 115, with the signal terminal 01 of the coil assembly 20 extending through the third through-slot 1123. The coil winding 22 abuts against the limiting bar 1152. The two yokes 23 are respectively inserted into the two second positioning slots 1151. The static lead terminal 03 of the auxiliary static contact 60 extends through the other second through-slot 1122 of the first side wall 112.

[0108] Then, the base 11 is inserted into the outer cover 12 along the Y-axis direction and fixed to the outer cover 12. It should be understood that the order of each part in the installation process can be adjusted as needed.

[0109] After installation is complete, see Figure 3-4 The contact portion 200 and coil winding 22 are located on either side of a first plane in the X-axis direction. The first plane is perpendicular to the X-axis and passes through the first axis. The ends of the signal terminal 01, static lead terminal 03, and dynamic lead terminal 04 near the opening of the base 11 are all located at the same height along the Z-axis and are located on the side of the first sidewall 112 near the opening.

[0110] The working process of this 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. Figure 3, one of the first attracting parts 321 attracts the first magnetic driving segment 234, one of the second attracting parts 331 attracts the second magnetic driving segment 235, and the driving part 35 drives the moving contact 411 and the static contact 51 to close; the auxiliary pushing part 36 drives the auxiliary moving contact 7111 and the auxiliary static contact 613 to disconnect;

[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 drives the armature assembly 30 to rotate from the first position to the second position, see Figure 4 The other second attracting portion 331 attracts the first magnetic driving segment 234, and the other first attracting portion 321 attracts the second magnetic driving segment 235. The driving portion 35 drives the movable contact 411 to disconnect from the static contact 51. The auxiliary pushing portion 36 drives the auxiliary movable contact 7111 to close with 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 part 10 together with the coil winding 22, in this embodiment, the auxiliary static contact 60 is fixed to the yoke 23, and the auxiliary static contact 60 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 the assembly is simple, thereby solving the problem of difficult assembly and positioning of small parts. In addition, the problem of scraping that is easy to occur when the auxiliary static contact 60 is installed with the base 11 can also be avoided. More preferably, the stability of the yoke 23 and the coil body on the base 11 is also utilized, so that the auxiliary static contact 60 is directly supported by the yoke 23 to obtain strength and stability, so that there is no need to form a mounting portion on the accommodating part 10, making the structure of the accommodating part 10 simple, easy to form and saving materials. In addition, it is also beneficial to reduce the volume of the accommodating part 10 and the miniaturized design of the magnetic holding relay to better meet usage requirements and reduce costs.

[0114] In this embodiment, since only the auxiliary moving contact 70 needs to be installed, the situation in which two installation positions are originally required on the accommodating part 10 for the installation of the auxiliary static contact 60 and the auxiliary moving contact 70 respectively is changed to only one installation position, and the installation of the auxiliary moving contact 70 only needs to consider the ability to be reliably separated from the auxiliary moving contact 60 and ensure that the auxiliary moving contact 70 can avoid other structures of the armature assembly 30 and the coil assembly 20. Therefore, the space used for the overall installation of the auxiliary monitoring switch 300 is effectively reduced without increasing the volume of the accommodating part 10; in addition, the auxiliary monitoring switch 300 in this technical solution occupies less space than 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 structural design is simpler.

[0115] In this embodiment, the first side of the auxiliary static contact portion 61 is used to contact the auxiliary moving contact 70, and its second side opposite to it is abutted against the yoke 23. When the auxiliary moving contact 70 contacts the auxiliary static contact portion 61, the auxiliary static contact portion 61 is supported by the yoke 23, which further makes the auxiliary static contact 60 have good stability in the contact direction of the auxiliary moving contact 70, so that the contact between the auxiliary moving contact 70 and the auxiliary static contact 60 is reliable.

[0116] In this embodiment, the coil assembly 20 includes a coil winding 22 arranged on one side of the armature assembly 30 along the X-axis direction, and the auxiliary static contact 60 is fixed to the side of the yoke 23 facing 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 60 is easier to avoid the coil winding 22, and the distance between the coil winding 22 and the armature assembly 30 (along the X-axis direction) does not need to be too large, thereby reducing the space occupied by the magnetic holding relay in the X-axis direction.

[0117] In this embodiment, the yoke 23 is provided with a magnetic drive section 231 extending perpendicularly to the X-axis. The auxiliary static contact 60 is fixedly attached to the side of the magnetic drive section 231 facing away from the coil winding 22. Taking advantage of the larger surface area of ​​the magnetic drive section 231, this helps improve the connection strength and stability of the auxiliary static contact 60 after being fixed to the magnetic drive section 231. Furthermore, compared to the configuration in which the auxiliary static contact 60 is fixed to the connecting section 232 of the yoke 23, the auxiliary monitoring switch 300 occupies less space in the Y-axis direction. The auxiliary movable contact 7111 is adapted to close or open with the auxiliary static contact 613 along the X-axis, so that when the auxiliary movable contact 7111 and the auxiliary static contact 613 are closed, the auxiliary static contact 613 can be supported by the magnetic drive section 231, resulting in a more stable structure.

[0118] In this embodiment, the auxiliary static contact portion 61 is in the shape of a flat sheet parallel to and in contact with the magnetic drive section 231 , which helps to reduce the space occupied by the auxiliary static contact portion 61 in the X-axis direction, thereby avoiding interference with the movement of the armature assembly 30 .

[0119] In this embodiment, the connection between the magnetic drive section 231 and the connecting section 232 has an arc transition surface 233, and the position where the auxiliary static contact 60 is fixed to the magnetic drive section 231 avoids the arc transition surface 233, so that the auxiliary static contact 60 and the yoke 23 have a larger connection area, thereby improving the fixing strength of the auxiliary static contact 60 and the yoke 23.

[0120] In this embodiment, the yoke 23 extends along the Z-axis direction; the position where the auxiliary static contact 60 is fixed to the magnetic drive section 231 is close to the first end of the yoke 23 along the Z-axis direction. Compared with being set close to the middle of the yoke 23, the auxiliary static contact 60 is easier to avoid the armature assembly 30 in the Z-axis direction, and it is also easier to achieve the fixing operation of the auxiliary static contact 60 and the yoke 23.

[0121] In this embodiment, at the first end of the yoke 23, the magnetic drive section 231 is provided with a protrusion 2311 protruding along the Z-axis direction relative to the connecting section 232, and the auxiliary static contact 60 is at least partially fixed to the protrusion 2311. On the one hand, it makes it easier for the auxiliary static contact 60 to avoid the armature assembly 30 in the Z-axis direction. On the other hand, it makes it easier for the fixed position to avoid the 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 can also make the auxiliary static contact 60 and the yoke 23 have a larger connection area, thereby improving the fixing strength.

[0122] In this embodiment, an avoidance gap 614 is formed between the first connection portion 611 and the second connection portion 612, which faces the second yoke 23 and is suitable for avoiding the armature assembly 30; the second connection portion 612 is farther away from the first end of the yoke 23 than the first connection portion 611; along the Y-axis direction, the second connection portion 612 is closer to the arc transition surface 233 of the yoke 23 than the first connection portion 611; the first connection portion 611 is fixed to the yoke 23; the auxiliary static contact 613 is provided on the second connection portion 612, on the one hand, making it easier for the auxiliary static contact 60 to avoid the armature assembly 30 in the Y-axis direction and the Z-axis direction, and on the other hand, making the first connection portion 611 able to be farther away from the arc transition surface 233 of the yoke 23, thereby improving the connection stability between the first connection portion 611 and the yoke 23; in addition, setting the second connection portion 612 closer to the arc transition surface 233 is conducive to avoiding the second connection portion 612 from interfering with 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 along the X-axis direction, is connected between the first connecting portion 611 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 one side of the connecting section 232 along the Z-axis direction is fully utilized to avoid the auxiliary static contact 60 from 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, which is more conducive to achieving electrical isolation between the weak-current terminals of the magnetic latching relay (including the terminals of the coil assembly 20 and the terminals of the auxiliary monitoring switch 300) and the strong-current terminals of the magnetic latching relay (here mainly referring to the connecting terminal 02 of the contact part 200). 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 consumables and costs.

[0124] In this embodiment, the auxiliary static contact 60 is riveted to the yoke 23, which simplifies the process and stabilizes the structure. In this embodiment, the rivet hole 6111 is a countersunk hole, and the rivet portion 2351 does not protrude from the rivet hole 6111, which is more conducive to reducing the space occupied by the auxiliary static contact portion 61 in the X-axis direction.

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

[0126] In this embodiment, the auxiliary static contact 60 is provided with at least two auxiliary static contacts 613, and each auxiliary static contact 613 is located at the same height along the Z-axis direction; the auxiliary dynamic spring member 71 is provided with contact branches 712 equal to and corresponding to the auxiliary static contacts 613, one end of each contact branch 712 is fixed to the fixed portion 73, and the other end is provided with an auxiliary dynamic contact 7111 suitable for abutting the auxiliary static contact 613; each contact branch 712 forms a swinging portion 711 at one end away from the fixed portion 73. On the one hand, the provision of multiple auxiliary dynamic and static contacts 51 can improve the connection reliability of the auxiliary monitoring switch 300, and is also beneficial to the processing of the auxiliary dynamic contact 70 and the auxiliary static contact 60. On the other hand, it is also beneficial to the deformation of the auxiliary dynamic contact 70 along the X-axis direction, thereby improving the connection reliability and extending the service life; each auxiliary static contact 613 is located at the same height along the Z-axis direction so that the contact pressure of each auxiliary dynamic contact 7111 and each auxiliary static contact 613 is consistent.

[0127] When the locking cam 713 is in the unlocking state, the locking cam 713 is in the unlocking state, and the locking cam 713 is in the unlocking state, so that the locking cam 713 is locked.

[0128] In this embodiment, the fixing portion 73 is fixed to the bottom wall 111, which is easy to install and makes the length between the swinging portion 711 and the fixed end of the auxiliary dynamic spring member 71 longer, which is more conducive to reducing the stress concentration phenomenon of the auxiliary dynamic spring member 71 and improving the service life.

[0129] In this embodiment, the auxiliary moving contact 70 is further provided with a moving lead-out terminal 04 and a moving lead-out portion 74. The moving lead-out portion 74 is located on the side of the fixed portion 73 facing the auxiliary static contact 60, one end of which is fixed to the fixed portion 73, and the other end is close to the bending portion 62 and connected to the moving lead-out terminal 04. On the one hand, the moving lead-out terminal 04 can be installed close to the signal terminal 01 of the coil assembly 20, which is conducive to achieving electrical isolation between the weak-current terminals of the magnetic holding relay (including the terminals of the coil assembly 20 and the terminals of the auxiliary monitoring switch 300) and the strong-current terminals of the magnetic holding relay (here mainly refers to the connection terminals 02 of the contact part 200 below); on the other hand, it can also avoid the influence of multiple grooves on the accommodating part 10 of the magnetic holding relay on the strength of the accommodating part 10. Among them, the static lead terminal 03 and the dynamic lead terminal 04 both extend along the Y-axis direction and are flush in the Z-axis direction. On the one hand, the static lead terminal 03 and the dynamic lead terminal 04 do not need to be complicatedly bent, which reduces the molding difficulty and material cost and increases their service life. On the other hand, it makes the routing path on the PCB board simpler.

[0130] In this embodiment, the movable lead-out portion 74 is in the form of a flat sheet perpendicular to the Y-axis, which helps reduce the space occupied by the movable lead-out portion 74 in the Y-axis direction. The accommodating member 10 is provided with a first limiting portion 1112 and a second limiting portion 1113. The first limiting portion 1112 is used to limit the displacement of the fixed portion 73 along the X-axis direction, while the second limiting portion 1113 cooperates 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. This ensures that the auxiliary movable contact 70 is limited in both the X-axis and Y-axis directions, further enhancing the structural stability of the auxiliary movable contact 70. This also means that the movable lead-out portion 74 is in contact with the first side wall 112, which can limit the movable lead-out portion 74 and increase its strength.

[0131] In this embodiment, the armature assembly 30 rotates around a 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 entire magnetic circuit system has a simple structure, a reasonable layout, and occupies little space.

[0132] In this embodiment, under normal circumstances, if the armature assembly 30 drives the moving contact 40 to move by driving an independent pushing card, then the area of ​​the yoke 23 on the side facing the contact part 200 along the X-axis direction is usually used as the activity space of the pushing card. If it is necessary to install an auxiliary monitoring switch 300 on the side of the armature 31 along the Y-axis direction, it is necessary to lead out a swing arm 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, large consumables and large volume. In this embodiment, the driving part 35 and the auxiliary pushing part 36 are integrally formed in the armature assembly 30. Through reasonable design and processing, the driving part 35 can avoid the space for installing the auxiliary monitoring switch 300, and the small-structured auxiliary pushing part 36 is used to drive the auxiliary moving contact 70 in the auxiliary monitoring switch 300 to move. The structure is simple, the consumables are small, the molding is good, and there is no need to increase the volume of the magnetic holding relay. In this solution, a driving portion 35 and an auxiliary pushing portion 36 are integrally provided on the armature assembly 30, which has a simple structure, is easy to form and is conducive to reducing production costs. In addition, the driving portion 35 and the auxiliary pushing portion 36 are stable relative to the armature assembly 30, thereby reducing the shaking of the moving contact 40 and the auxiliary moving contact 70 during disconnection, avoiding affecting the arc burning characteristics of the disconnecting arc, and reducing the hazards of contact erosion and uncontrolled arc erosion of other components.

[0133] In this embodiment, the contact portion 200 and the coil winding 22 are respectively located on both sides of the first plane along the X-axis direction, and the auxiliary static contact 60 is fixed to one of the yokes 23, so that the contact portion 200, the coil winding 22 and the auxiliary monitoring switch 300 are separated from each other in the X-axis direction, so that 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 maintained in a larger range, improving the electrical isolation problem and facilitating the isolation of the strong and weak-current terminals. The armature assembly 30 is provided with an auxiliary push portion 36 and a drive portion 35 on the side away from the coil winding 22, which is conducive to avoiding the auxiliary monitoring switch 300. The auxiliary push portion 36 is suitable for directly driving the auxiliary moving contact 70. Compared with the solution of providing a push card between the auxiliary push portion 36 and the auxiliary moving contact 70, the space required in the Y-axis direction is smaller, and the problem of the push card getting stuck after long-term operation is avoided.

[0134] In this embodiment, in the magnetic holding state, the two armatures 31 each have an attraction portion that attracts the corresponding magnetic drive segment 231 to form a closed magnetic circuit passing through the two magnetic drive segments 231. The closed magnetic circuit passes from one magnetic pole of the permanent magnet through an attraction portion, a magnetic drive segment 231, the iron core, another magnetic drive segment 231 and another attraction portion and returns to the other magnetic pole of the permanent magnet. Compared with the closed magnetic circuit that only passes through one magnetic drive segment 231, the closed magnetic circuit of this technical solution has a greater magnetic attraction force and a more stable magnetic circuit; the permanent magnet can also keep the attraction portion and the magnetic drive segment 231 attracted when the coil assembly 20 is powered off; the insulating member 34 is provided with an auxiliary pushing portion 36 and a driving portion 35, which is easy to process and form.

[0135] In this embodiment, since the auxiliary monitoring switch 300 is located between the contact portion 200 and the coil winding 22 along the X-axis, the static lead terminal 03 and the dynamic lead terminal 04 are also located between the signal terminal 01 and the connection terminal 02 along the X-axis. This ensures a creepage distance between the signal terminal 01 and the connection terminal 02 without increasing the length along the X-axis. The ends of the signal terminal 01, the static lead terminal 03, and the dynamic lead terminal 04 near the opening are all located at the same height along the Z-axis and are all located on the side of the first side wall 112 near the opening. This allows the signal terminal 01, the static lead terminal 03, and the dynamic lead terminal 04 to be inserted downward from the opening of the base 11. Therefore, the slot in the first side wall 112 does not need to be very long along the Z-axis, reducing the weakening of the first side wall 112. During installation, the contact portion 200, the coil assembly 20, and the auxiliary monitoring switch 300 can all be directly inserted from the opening end of the base 11, making installation convenient and labor-saving. This also facilitates the connection of the magnetic latching relay to the PCB board along the Y-axis.

[0136] Example 2

[0137] The structure of the embodiment 2 is basically the same as that of the embodiment 1, except that the structure of the auxiliary static contact 60 is different. Figure 11 In this embodiment, the auxiliary static contact 61 does not include the first connecting portion 611 and the second connecting portion 612. The auxiliary static contact 613 is located along the Y-axis between the location where the auxiliary static contact 61 is fixed to the magnetic drive segment 231 and the arc transition surface 233. When the auxiliary movable contact 7111 contacts the auxiliary static contact 613, the auxiliary static contact 60 defines an electrical path, and the location where the auxiliary static contact 60 is fixed to the magnetic drive segment 231 is outside the electrical path. The auxiliary static contact 60 also has a static lead terminal 03 and a bent portion 62. The bent portion 62 extends along the X-axis, connecting between the auxiliary static contact 61 and the static lead terminal 03 and located on one side of the connecting segment 232 along the Z-axis.

[0138] In this embodiment, the auxiliary static contact 613 is located between the position where the auxiliary static contact part 61 and the magnetic drive section 231 are fixed and the arc transition surface 233 along the Y-axis direction, which is conducive to achieving that the position where the auxiliary static contact 60 and the magnetic drive section 231 are fixed is located outside the electrical path, and makes the fixed position farther away from the arc transition surface 233 of the yoke 23, and the connection between the auxiliary static contact 60 and the yoke 23 is more stable.

[0139] In this embodiment, when the auxiliary moving contact 7111 contacts the auxiliary static contact 613, the auxiliary static contact 60 has an electrical path, and the position where the auxiliary static contact 60 is fixed to the magnetic drive section 231 is located outside the electrical path. When the auxiliary monitoring switch 300 is closed, the current does not pass through the position where the auxiliary static contact 60 is fixed to the magnetic drive section 231 to enter the yoke 23. Therefore, without setting an insulating structure between the auxiliary static contact 60 and the magnetic drive section 231, the current of the auxiliary monitoring switch 300 can be avoided from affecting the magnetic circuit in the yoke 23, thereby reducing the complexity of the structure.

[0140] 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 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 one side of the connecting section 232 along the Z-axis direction is fully utilized to avoid the auxiliary static contact 60 from 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, which is more conducive to achieving electrical isolation between the weak-current terminals of the magnetic latching relay (including the terminals of the coil assembly 20 and the terminals of the auxiliary monitoring switch 300) and the strong-current terminals of the magnetic latching relay (here mainly referring to the connecting terminal 02 of the contact part 200). 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 consumables and costs.

[0141] Example 3

[0142] The structure of the embodiment 3 is basically the same as that of the embodiment 1, except that the structure of the auxiliary static contact 60 is different. Figure 12In this embodiment, the auxiliary static contact portion 61 does not include the first connecting portion 611 and the second connecting portion 612. A mounting slot 2352 with an opening facing away from the coil winding 22 and a riveted portion 2351 protruding from the mounting slot 2352 are stamped on the side of the magnetic drive section 231 of the yoke 23. The auxiliary static contact 60 is mounted in the mounting slot 2352 and is provided with a riveted hole 6111 that mates with the riveted portion 2351. There are three riveted portions 2351, each located near the auxiliary static contact portion 61 and away from the arc transition surface 233. When the auxiliary movable contact 7111 contacts the auxiliary static contact 613, an electrical path is established for the auxiliary static contact 60, and the location where the auxiliary static contact 60 is fixed to the magnetic drive section 231 is outside the electrical path.

[0143] In this embodiment, the magnetic drive section 231 of the yoke 23 is stamped on the side away from the coil winding 22 to form a mounting groove 2352 with an opening away from the coil winding 22 and a riveted portion 2351 protruding from the mounting groove 2352. The auxiliary static contact 60 is installed in the mounting groove 2352 and is provided with a rivet hole 6111 that cooperates with the riveted portion 2351. The stamping process allows the riveted portion 2351 to have a longer length in the X-axis direction, thereby also allowing the auxiliary static contact 60 to have a larger thickness, and when applied to a magnetic holding relay, it occupies less space in the X-axis direction.

[0144] In this embodiment, when the auxiliary moving contact 7111 contacts the auxiliary static contact 613, the auxiliary static contact 60 has an electrical path, and the position where the auxiliary static contact 60 is fixed to the magnetic drive section 231 is located outside the electrical path. When the auxiliary monitoring switch 300 is closed, the current does not pass through the position where the auxiliary static contact 60 is fixed to the magnetic drive section 231 to enter the yoke 23. Therefore, without setting an insulating structure between the auxiliary static contact 60 and the magnetic drive section 231, the current of the auxiliary monitoring switch 300 can be avoided from affecting the magnetic circuit in the yoke 23, thereby reducing the complexity of the structure.

[0145] 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 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 one side of the connecting section 232 along the Z-axis direction is fully utilized to avoid the auxiliary static contact 60 from 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, which is more conducive to achieving electrical isolation between the weak-current terminals of the magnetic latching relay (including the terminals of the coil assembly 20 and the terminals of the auxiliary monitoring switch 300) and the strong-current terminals of the magnetic latching relay (here mainly referring to the connecting terminal 02 of the contact part 200). 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 consumables and costs.

[0146] The above description and embodiments are used to explain the scope of protection of the utility model, but do not constitute a limitation on the scope of protection of the utility model. Based on the enlightenment of the utility model or the above embodiments, modifications, equivalent replacements, or other improvements to the embodiments of the utility model or part of the technical features thereof that can be obtained by ordinary technicians in this field through logical analysis, reasoning, or limited experiments in combination with common knowledge, ordinary technical knowledge in this field and / or existing technology should be included in the scope of protection of the utility model.

Claims

1. A magnetic latching relay, characterized in that: include: a receiving member (10); A coil assembly (20) comprising a yoke (23) fixed relative to the receiving member (10); An armature assembly (30) is provided outside the coil assembly (20) and moves in response to a change in the polarity of the yoke (23); an auxiliary monitoring switch (300) comprises an auxiliary static contact (60) and an auxiliary moving contact (70), both of which are used for external connection to output signals; the auxiliary static contact (60) is fixed to the yoke (23), and the auxiliary moving contact (70) is suitable for being driven by the armature assembly (30) to move to contact or move away from the auxiliary static contact (60).

2. A magnetic latching relay as claimed in claim 1, characterized in that: The auxiliary static contact (60) is provided with an auxiliary static contact portion (61), and the auxiliary static contact portion (61) is provided with a first side and a second side that are separated from each other, the first side is used to contact the auxiliary moving contact (70), and the second side is in contact with the yoke (23).

3. A magnetic latching relay as claimed in claim 2, characterized in that: The coil assembly (20) includes a coil winding (22) arranged on one side of the armature assembly (30) along the X-axis direction, and the coil winding (22) is fixed relative to the accommodating member (10); the yoke (23) is fixed to the end face of the coil winding (22), and the auxiliary static contact portion (61) is fixed to the side of the yoke (23) facing away from the coil winding (22).

4. A magnetic latching relay as claimed in claim 3, characterized in that: The yoke (23) is provided with a magnetic drive section (231) and a connecting section (232) which are both connected as one body and are in the shape of flat sheets. The magnetic drive section (231) is perpendicular to the X-axis direction, and the connecting section (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 drive section (231) and is provided with an auxiliary static contact (613). The auxiliary movable contact (70) is provided with an auxiliary movable contact (7111), and the auxiliary movable contact (7111) is suitable for closing or opening with the auxiliary static contact (613) along the X-axis direction.

5. A magnetic latching relay as claimed in claim 4, characterized in that: The auxiliary static contact portion (61) is in the shape of a flat sheet and is parallel to and in contact with the magnetic drive section (231).

6. A magnetic latching relay as claimed in claim 4, characterized in that: The connection between the magnetic drive section (231) and the connection section (232) has an arc transition surface (233), and the position where the auxiliary static contact (60) is fixed to the magnetic drive section (231) avoids the arc transition surface (233).

7. A magnetic latching relay as claimed in claim 6, characterized in that: The yoke (23) extends in the Z-axis direction; the position where the auxiliary static contact (60) is fixed to the magnetic drive section (231) is arranged close to the first end of the yoke (23) in the Z-axis direction.

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

9. A magnetic latching relay as claimed in claim 8, characterized in that: The auxiliary static contact portion (61) is provided with a first connecting portion (611) and a second connecting portion (612) connected as one body along the Z-axis direction; an avoidance notch (614) suitable for avoiding the armature assembly (30) is formed between the first connecting portion (611) and the second connecting portion (612); along 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); along 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 fixedly connected to the yoke (23); and the auxiliary static contact (613) is provided on the second connecting portion (612).

10. A magnetic latching relay as claimed in claim 9, characterized in that: The auxiliary static contact (60) is further provided with a static lead-out terminal (03) and a bending portion (62), wherein the bending portion (62) extends along the X-axis direction, is connected between the first connecting portion (611) and the static lead-out terminal (03), and is located on one side of the connecting section (232) along the Z-axis direction.

11. A magnetic latching relay as claimed in claim 7, characterized in that: When the auxiliary moving contact (7111) contacts the auxiliary static contact (613), the auxiliary static contact (60) has an electrical path, and the position where the auxiliary static contact (60) is fixed to the magnetic drive section (231) is located outside the electrical path.

12. A magnetic latching relay according to claim 11, characterized in that: The auxiliary static contact (60) is further provided with a static lead-out terminal (03) and a bending portion (62), wherein 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.

13. A magnetic latching relay as claimed in claim 12, characterized in that: The auxiliary static contact point (613) is located along the Y-axis direction between the position where the auxiliary static contact portion (61) and the magnetic drive section (231) are fixed and the arc transition surface (233).

14. A magnetic latching relay as claimed in claim 12, characterized in that: A mounting groove (2352) with an opening facing away from the coil winding (22) and a riveted portion (2351) protruding from the mounting groove (2352) are punched on a side of the magnetic drive section (231) of the yoke (23) facing away from the coil winding (22); the auxiliary static contact (60) is mounted in the mounting groove (2352) and is provided with a riveted hole (6111) that cooperates with the riveted portion (2351).

15. A magnetic latching relay according to any one of claims 1 to 13, characterized in that: The auxiliary static contact (60) is riveted to the yoke (23).

16. A magnetic latching relay as claimed in claim 15, characterized in that: The auxiliary static contact (60) is provided with a rivet hole (6111), and the yoke (23) is provided with a rivet portion (2351) adapted to the rivet hole (6111); The rivet hole (6111) is a countersunk hole, and the rivet portion (2351) does not protrude from the rivet hole (6111).

17. A magnetic latching relay as claimed in claim 7, characterized in that: The auxiliary moving contact (70) includes an auxiliary moving spring (71) extending along the Z-axis direction. The auxiliary moving spring (71) is in the shape of a flat sheet parallel to the auxiliary static contact portion (61). One end of the auxiliary moving spring (71) along the Z-axis direction is fixedly connected to the accommodating portion (10), and the other end of the auxiliary moving spring (711) forms a swinging portion (711). The auxiliary moving contact point (7111) is provided on the swinging portion (711) of the auxiliary moving spring (71).

18. A magnetic latching relay as claimed in claim 17, characterized in that: The auxiliary static contact (60) is provided with at least two auxiliary static contacts (613); each auxiliary static contact (613) is located at the same height along the Z-axis direction; the auxiliary dynamic spring (71) is provided with contact branches (712) equal in number to and corresponding to the auxiliary static contacts (613); one end of each contact branch (712) is fixedly connected to each other and to the accommodating member (10), and the other end is provided with an auxiliary dynamic contact (7111) suitable for abutting against the auxiliary static contact (613); and one end of each contact branch (712) away from its fixed end forms a swinging portion (711).

19. A magnetic latching relay as claimed in claim 17, characterized in that: The auxiliary dynamic spring member (71) is further provided with a pushing portion (713), one end of which is fixedly connected to the swinging portion (711), and the other end of which is suitable for being driven by the armature assembly (30).

20. A magnetic latching relay as claimed in claim 19, characterized in that: The accommodating member (10) includes a base (11) and an outer cover (12); the base (11) is provided with an opening at one end along the Z-axis direction, and the outer cover (12) is provided outside the base (11); the base (11) is provided with a first side wall (112) perpendicular to the Y-axis direction and a bottom wall (111) perpendicular to the Z-axis direction; the first end of the yoke (23) is away from the bottom wall (111); and the auxiliary dynamic spring member (71) is fixed to the bottom wall (111).

21. A magnetic latching relay as claimed in claim 20, characterized in that: The auxiliary moving contact (70) further includes a lead-out member (72); the lead-out member (72) is provided with a fixed portion (73), a moving lead-out terminal (04) and a moving lead-out portion (74); the fixed portion (73) is fixedly connected to the fixed end of the auxiliary moving spring member (71); the auxiliary static contact (60) is further provided with a static lead-out terminal (03); the static lead-out terminal (03) and the moving lead-out terminal (04) both extend along the Y-axis direction and are flush with each other in the Z-axis direction; the moving lead-out portion (74) is located on the side of the fixed portion (73) facing the auxiliary static contact (60), one end of the lead-out portion is fixedly connected to the fixed portion (73), and the other end is close to the bending portion (62) of the auxiliary static contact (60) and connected to the moving lead-out terminal (04).

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

23. A magnetic latching relay as claimed in claim 3, characterized in that: The armature assembly (30) is suitable for rotating relative to the coil assembly (20) around a rotation axis extending along the Z-axis direction; 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, and the auxiliary static contact (60) is fixed to one of the yokes (23).

24. A magnetic latching relay as claimed in claim 23, characterized in that: The invention also includes a contact portion (200), wherein the contact portion (200) includes a moving contact (40) and a static contact (50), wherein the moving contact (40) is provided with a moving contact point (411), and the static contact (50) is provided with a static contact point (51); the armature assembly (30) is provided with an integrally formed driving portion (35) and an auxiliary pushing portion (36), wherein the moving contact (40) is adapted to be driven by the driving portion (35) so as to close or open the moving contact point (411) and the static contact point (51) along the X-axis direction; and the auxiliary static contact (60) is adapted to be driven by the auxiliary driving portion (35) so as to contact or move away from the auxiliary static contact (60).

25. A 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, and the first plane is perpendicular to the X-axis direction and passes through the rotation axis; the armature assembly (30) is provided with the driving portion (35) and the auxiliary pushing portion (36) on the side facing away from the coil winding (22), and the auxiliary pushing portion (36) is suitable for directly driving the auxiliary moving contact (70).

26. A 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), and the magnetic circuit portion (100) has a magnetic holding function; the coil assembly (20) is provided with two magnetic drive segments (231); the armature assembly (30) comprises a permanent magnet, two armatures (31) and an insulating 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 attracting portions suitable for attracting the magnetic drive segments (231); when the magnetic circuit portion (100) is in a magnetic holding state, the two armatures (31) each have an attracting portion that attracts the corresponding magnetic drive segment (231) to form a closed magnetic circuit passing through the two magnetic drive segments (231); the insulating member (34) is fixed to the permanent magnet; and the insulating member (34) is provided with the driving portion (35) and the auxiliary pushing portion (36).

27. A 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 connecting terminal (02); the auxiliary static contact (60) and the auxiliary dynamic contact (70) are respectively provided with a static lead-out terminal (03) and a dynamic lead-out terminal (04); the accommodating member (10) comprises a base (11) and an outer cover (12); the base (11) is provided with an opening at one end along the Z-axis direction, and the outer cover (12) is provided outside the base (11); the coil winding (22) is fixedly connected to 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 static lead-out terminal (03) and the dynamic lead-out 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.

Images