relay

Abstract

The application discloses a relay, which comprises a magnetic driving assembly, a coil holder and a plurality of magnetic holding assemblies. The coil holder surrounds the magnetic driving assembly; the coil holder has a plurality of isolation structures, which separate a plurality of mounting areas; and the plurality of magnetic holding assemblies are arranged in the plurality of mounting areas correspondingly.

Description

Technical Field

[0001] This application relates to the field of electrical control device technology, and more specifically, to a relay. Background Technology

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is commonly used in automatic control circuits. Essentially, a relay is an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits.

[0003] Magnetic latching relays, as a type of relay, can maintain their switched state after being energized, and will remain in the same state even after the power is disconnected. Therefore, magnetic latching relays are widely used in scenarios requiring low power consumption and long-term state maintenance, and are a common type of relay in intelligent control and energy-saving devices. However, the magnetic holding force of existing magnetic latching relays still needs further improvement. Utility Model Content

[0004] This application provides a relay to improve the problem of insufficient magnetic holding force in relays in the related art.

[0005] The relay in this application embodiment includes:

[0006] Magnetic drive components;

[0007] A coil frame surrounds the magnetic drive assembly; the coil frame has multiple isolation structures that separate multiple mounting areas; and

[0008] Multiple magnetic holding components are correspondingly disposed in multiple mounting areas.

[0009] According to some embodiments of this application, the isolation structure is flat.

[0010] According to some embodiments of this application, the orthographic projection of each magnetic holding component on a target plane is a first projection, the orthographic projection of the coil frame on the target plane is a second projection, and the ratio of the sum of the areas of the plurality of first projections to the area of ​​the second projection is R, where 0.9 ≤ R ≤ 1.2; wherein, the target plane is perpendicular to the axis of the magnetic drive component.

[0011] According to some embodiments of this application, a plurality of the isolation structures are arranged at circumferential intervals along the magnetic drive assembly.

[0012] According to some embodiments of this application, the coil frame has a plurality of first limiting structures, the magnetic holding assembly has a second limiting structure, and the second limiting structures of the plurality of magnetic holding assemblies are correspondingly matched with the plurality of first limiting structures for limiting.

[0013] According to some embodiments of this application, one of the first limiting structure and the second limiting structure is a protrusion and the other is a groove, with the protrusion located within the groove; and / or

[0014] The magnetic holding assembly has the second limiting structure on both sides along the axial direction of the magnetic drive assembly.

[0015] According to some embodiments of this application, the magnetic holding assembly includes a permanent magnet and an outer magnetic conductor, the outer magnetic conductor having the second limiting structure, and the outer magnetic conductor being attached to the side surface of the permanent magnet facing away from the magnetic drive assembly.

[0016] According to some embodiments of this application, the external magnetic conductor includes multiple stacked magnetic sheets.

[0017] According to some embodiments of this application, the coil frame further includes a winding cylinder, a first baffle, and a second baffle. The winding cylinder is sleeved on the outer periphery of the magnetic drive assembly, and the first baffle and the second baffle are respectively connected to the two axial ends of the winding cylinder.

[0018] Multiple isolation structures protrude from the side surface of the first baffle facing away from the second baffle, and the first baffle is provided with the first limiting structure at the position corresponding to the installation area.

[0019] According to some embodiments of this application, the magnetic holding assembly has a magnetically conductive surface facing the magnetic drive assembly, the magnetically conductive surface being adapted to the shape of the outer peripheral side surface of the magnetic drive assembly.

[0020] According to some embodiments of this application, the magnetic holding assembly includes a permanent magnet and an inner magnetic conductor, the inner magnetic conductor being attached to the side surface of the permanent magnet facing the magnetic drive assembly, and the inner magnetic conductor having the magnetically conductive surface.

[0021] According to some embodiments of this application, the inner magnetic conductor comprises multiple stacked magnetic sheets.

[0022] According to some embodiments of this application, the magnetically conductive surface is a concave arc surface; and / or, the magnetically conductive surface is in contact with the outer peripheral side surface of the magnetic drive assembly.

[0023] According to some embodiments of this application, the coil frame includes a winding cylinder, a first baffle and a second baffle, the winding cylinder is sleeved on the outer periphery of the magnetic drive assembly, and the first baffle and the second baffle are respectively connected to the two axial ends of the winding cylinder;

[0024] Multiple isolation structures protrude from the side surface of the first baffle facing away from the second baffle.

[0025] According to some embodiments of this application, the first baffle is square, and the number of the isolation structures is four. One end of each of the four isolation structures is connected to the four corners of the first baffle, and they extend from the four corners of the first baffle along the radial direction of the magnetic drive assembly toward the center of the first baffle.

[0026] According to some embodiments of this application, the winding bobbin has a central hole through which the magnetic drive assembly passes, and the isolation structure extends radially along the central hole.

[0027] According to some embodiments of this application, a plurality of the isolation structures are arranged at equal intervals along the circumference of the central hole.

[0028] According to some embodiments of this application, the relay further includes a first stationary magnet and a yoke, the yoke being connected to the first stationary magnet, and the yoke and the first stationary magnet forming a magnetic circuit space.

[0029] The yoke includes a base plate and a side plate. The base plate is connected to the magnetic drive assembly. One end of the side plate is connected to the first static magnet, and the other end is connected to the base plate. The base plate, the side plate, and the first static magnet form the magnetic circuit space.

[0030] The side surface of each magnetic holding assembly facing away from the magnetic drive assembly is attached to the inner surface of the side plate.

[0031] According to some embodiments of this application, the orthographic projection of each magnetic holding assembly onto a target plane is a first projection, and the orthographic projection of the mounting area corresponding to the magnetic holding assembly onto the target plane is a second projection, wherein the target plane is perpendicular to the axis of the magnetic drive assembly; the shapes of the first projection and the second projection are one of the following:

[0032] Trapezoidal, sector-shaped, rectangular, and triangular shapes.

[0033] According to some embodiments of this application, the relay further includes a first stationary magnet; the magnetic drive assembly includes:

[0034] The first moving magnetic conductor is movable relative to the first stationary magnetic conductor;

[0035] The second moving magnetic conductor is located on the side of the first moving magnetic conductor opposite to the first stationary magnetic conductor, and is movable relative to the first stationary magnetic conductor along the moving direction of the first moving magnetic conductor; and

[0036] The second stationary magnet is located on the side of the first moving magnet that faces away from the first stationary magnet, and is fixedly disposed relative to the first stationary magnet.

[0037] According to some embodiments of this application, the magnetic drive assembly further includes:

[0038] A first elastic element is configured to provide an elastic force to the second moving magnet, causing the second moving magnet to tend to move toward the first moving magnet.

[0039] According to some embodiments of this application, the first elastic member is located between the second stationary magnetic body and the second moving magnetic body, with one end of the first elastic member abutting against the second moving magnetic body and the other end abutting against the second stationary magnetic body.

[0040] According to some embodiments of this application, the relay further includes a moving component fixedly connected to the first moving magnetic conductor, the moving component being configured to move relative to the first stationary magnetic conductor in response to an input signal, so as to switch the relay between a first state and a second state;

[0041] When the relay is in the first state, the first moving magnetic element is in contact with the first stationary magnetic element, and the first moving magnetic element is separated from the second moving magnetic element; when the relay is in the second state, the first moving magnetic element is in contact with the second moving magnetic element, and the first moving magnetic element is separated from the first stationary magnetic element; when the relay is in the second state, the first elastic element has a first deformation, and the first deformation is greater than zero.

[0042] According to some embodiments of this application, when the first moving magnetic material is separated from the second moving magnetic material, the first elastic element is in its original length state or has a second deformation due to being squeezed by the second moving magnetic material.

[0043] Wherein, when the first elastic element has the second deformation, the first deformation is greater than the second deformation.

[0044] According to some embodiments of this application, the relay further includes a stop structure configured to stop the second moving magnetic element from moving toward the first stationary magnetic element when the first moving magnetic element is separated from the second moving magnetic element.

[0045] According to some embodiments of this application, the stop structure includes a first stop portion and a second stop portion, the second moving magnetic conductor has the first stop portion, the second stationary magnetic conductor has the second stop portion, the first stop portion is located on the side of the second stop portion opposite to the first stationary magnetic conductor, and the second stop portion is configured to stop the first stop portion from moving toward the first stationary magnetic conductor when the first moving magnetic conductor is separated from the second moving magnetic conductor.

[0046] According to some embodiments of this application, the relay further includes a moving component configured to move relative to the first stationary magnet in response to an input signal, so as to switch the relay between a first state and a second state; when the relay is in the second state, the first moving magnet is in contact with the second moving magnet, and the first moving magnet is separated from the first stationary magnet.

[0047] When the relay is in the second state, there is a gap between the second stop portion and the first stop portion, or the second stop portion is in contact with the first stop portion.

[0048] According to some embodiments of this application, the second static magnetic conductor includes a magnetic post and a retaining ring. The magnetic post is located on the side of the first moving magnetic conductor facing away from the first static magnetic conductor. The retaining ring is fixedly connected to the end of the magnetic post near the first moving magnetic conductor, and the outer periphery of the retaining ring has a second stop portion. The second moving magnetic conductor has a cylindrical structure and is movably sleeved on at least a portion of the magnetic post.

[0049] According to some embodiments of this application, the outer peripheral side of the magnetic post has a first step and a second step, the first step being closer to the first moving magnetic body than the second step, and the retaining ring being connected to the first step;

[0050] The first stop is located between the second stop and the tread of the second step.

[0051] According to some embodiments of this application, the relay further includes a first elastic element configured to provide an elastic force to the second moving magnetic element, so that the second moving magnetic element has the ability to move in a direction closer to the first moving magnetic element;

[0052] One end of the first elastic member abuts against the tread surface of the second step, and the other end abuts against the first stop portion.

[0053] According to some embodiments of this application, the magnetic drive assembly further includes a metal shell, which is connected to the surface of the first stationary magnetic conductor facing the first moving magnetic conductor; the metal shell has a second through hole, the second stationary magnetic conductor is fixedly connected to the metal shell and seals the second through hole; the first moving magnetic conductor and the second moving magnetic conductor are movably located inside the metal shell;

[0054] The coil frame surrounds the metal shell, and the magnetic holding assembly is located around the metal shell.

[0055] According to some embodiments of this application, the relay further includes a moving component, the moving component including a push rod member connected to the magnetic drive component, the moving component being configured to move relative to the coil frame in response to an input signal, thereby switching the relay between a first state and a second state;

[0056] One of the first state and the second state is that the relay is in a closed state, and the other of the first state and the second state is that the relay is in an open state; or, one of the first state and the second state is that the external circuit controlled by the relay is in a parallel state, and the other of the first state and the second state is that the external circuit controlled by the relay is in a series state.

[0057] An embodiment of the above application has at least the following advantages or beneficial effects:

[0058] The relay of this application embodiment includes a coil frame and multiple magnetic holding components. The coil frame has multiple isolation structures that separate multiple mounting areas. The multiple magnetic holding components are correspondingly installed in the multiple mounting areas. The isolation structures can reduce the influence of the attraction or repulsion between adjacent magnetic holding components on the magnetic holding force, thereby ensuring that the multiple magnetic holding components have a sufficiently large magnetic holding force.

[0059] Furthermore, designing the isolation structure as a flat plate allows for a larger installation area, which in turn allows for a larger magnetic holding assembly, further enhancing the magnetic holding force.

[0060] Furthermore, since the ratio of the sum of the areas of the multiple first projections to the area of ​​the second projection satisfies 0.9≤R≤1.2, the volume of the multiple magnetic holding components is increased under the premise of unchanged height, thereby further improving the magnetic holding force.

[0061] Furthermore, the magnetic holding assembly and the coil frame are positioned and engaged by a first limiting structure and a second limiting structure, significantly improving the installation accuracy of the magnetic holding assembly and the coil frame. This ensures that the gap between the magnetic holding assembly and the inner surface of the yoke is minimized or even tightly fitted, thereby reducing the magnetic gap between the magnetic holding assembly and the yoke, improving magnetic conductivity, and thus increasing the magnetic holding force of the magnetic holding assembly. In addition, the limiting engagement between the magnetic holding assembly and the coil frame prevents the magnetic holding assembly from detaching from the coil frame during transport.

[0062] Furthermore, the magnetic holding assembly has a second limiting structure on both sides, allowing it to be assembled in two installation directions when installed in the installation area, which significantly improves the ease of assembly.

[0063] Furthermore, taking advantage of the ease of processing the external magnetic conductor, the second limiting structure is set on the external magnetic conductor, which not only avoids the problem of difficult processing of permanent magnets, but also ensures the assembly accuracy of the magnetic holding assembly and the coil frame.

[0064] Furthermore, by providing an inner magnetic conductor on the side of the permanent magnet facing the magnetic drive assembly, and processing the surface of the inner magnetic conductor facing the magnetic drive assembly into a shape that matches the outer peripheral side of the magnetic drive assembly, the magnetic gap between the inner magnetic conductor and the magnetic drive assembly can be significantly reduced, thereby improving the magnetic holding force, while also reducing the processing difficulty.

[0065] Furthermore, the yoke includes a side plate that surrounds the magnetic holding assembly and has an inner surface that fits into the magnetic holding assembly. This design improves the magnetic conductivity of the magnetic holding assembly, thereby increasing the magnetic holding force.

[0066] Furthermore, the cover plate is connected to the coil holder and covers the magnetic holding assembly, which prevents the magnetic holding assembly from coming off the top of the coil holder during transport.

[0067] Furthermore, the outer and / or inner magnetic conductors comprise multiple magnetic sheets with a relatively small thickness, thus saving material costs.

[0068] Furthermore, the relay also includes a first moving magnetic element, a second stationary magnetic element, and a second moving magnetic element. The second moving magnetic element is movable relative to the first stationary magnetic element along the moving direction of the first moving magnetic element. Therefore, during relay assembly, even if at least one of the first stationary magnetic element, the first moving magnetic element, the second stationary magnetic element, and the second moving magnetic element experiences processing errors and / or assembly errors in the moving direction of the first moving magnetic element, the second moving magnetic element, being designed to be movable, can compensate for these processing errors and / or assembly errors by moving, thereby ensuring that the magnetic gap of the relay is maintained at a preset value and ensuring the normal operation of the relay. When the relay is in the second state, the first moving magnetic element and the second moving magnetic element are in contact. The magnetic field generated by the second moving magnetic element is not affected by the gap between the first and second moving magnetic elements, thereby ensuring the magnitude of the holding force provided by the second moving magnetic element.

[0069] Furthermore, when the first elastic element is compressed by the second moving magnetic body, it provides an elastic force to the second moving magnetic body. This allows the first elastic element to act as a buffer after the two moving magnetic bodies come into contact, converting the kinetic energy of the first moving magnetic body into the elastic potential energy of the first elastic element. This reduces the force of the first moving magnetic body impacting the second moving magnetic body, thus reducing noise. Additionally, when the relay is in the second state, the elastic force provided by the first elastic element to the second moving magnetic body provides initial kinetic energy to a certain extent. When the relay switches from the second state to the first state, the elastic force from the first elastic element reduces the time from when the relay coil is energized to when the second moving magnetic body begins to move, improving the relay's switching response time.

[0070] Furthermore, the magnetic drive assembly also includes a metal shell, which is connected to the surface of the first stationary magnet facing the first moving magnet. The second stationary magnet is fixedly connected to the metal shell and seals the second through hole. This creates a sealed chamber within the metal shell, as well as within the contact chamber formed by the insulating cover and the first stationary magnet. This allows the contact chamber to be filled with arc-extinguishing gas, reducing the risk of arcing when the first moving contact contacts the first stationary contact or the second moving contact contacts the second stationary contact. In addition, the first elastic element acts as a buffer when the first and second moving magnets contact each other, reducing the force of the first moving magnet impacting the second moving magnet. This prevents the second stationary magnet from becoming loosely connected to the metal shell due to continuous impact, thus preventing gas leakage from the metal shell.

[0071] Furthermore, under the elastic force of the first elastic element, the second moving magnetic conductor tends to move towards the first stationary magnetic conductor. A first stop is provided on the second moving magnetic conductor, and a second stop is provided on the second stationary magnetic conductor, with the first stop located on the side of the second stop facing away from the first stationary magnetic conductor. When the first and second moving magnetic conductors separate, the second stop prevents the first stop from moving towards the first stationary magnetic conductor, thus preventing the second and first moving magnetic conductors from moving together. The advantages of setting up a first stop and a second stop are as follows: Firstly, during the relay switching from the first state to the second state, it prevents the second moving magnet from displacing a long distance relative to the second stationary magnet, thus preventing jamming between the two magnets. Secondly, increasing the gap between the two magnets would affect their magnetic efficiency. Thirdly, the simultaneous movement of the first and second moving magnets, due to their combined weight, would increase power consumption. Finally, the second moving magnet can attract the first moving magnet to hold the relay in the second state. If the first and second moving magnets move together, the lateral holding force alone would be insufficient to hold the relay in the second state. Furthermore, when the first and second moving magnets separate, the second moving magnet can be stably positioned under the combined action of the second stop and the first elastic element, preventing wobbling. Attached Figure Description

[0072] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0073] Figure 1 This is a side view of the relay according to the first embodiment of this application.

[0074] Figure 2 It is along Figure 1 A cross-sectional view after being cut along section line AA.

[0075] Figure 3 It is an omission Figure 1 A three-dimensional schematic diagram of the outer shell.

[0076] Figure 4 It is along Figure 1 A sectional view after being cut along the BB section line.

[0077] Figure 5 This is a three-dimensional schematic diagram of the coil frame and four magnetic holding components assembled according to the first embodiment.

[0078] Figure 6 This is a three-dimensional schematic diagram of the coil frame of the first embodiment.

[0079] Figure 7 This is a three-dimensional schematic diagram of the magnetic holding assembly of the first embodiment.

[0080] Figure 8 This is a three-dimensional schematic diagram of the yoke component in the first embodiment.

[0081] Figure 9 It is an exploded schematic diagram of the first moving magnetic conductor, the second moving magnetic conductor, the second stationary magnetic conductor, and the first elastic element.

[0082] Figure 10 This is a magnified view showing a gap between the first stop and the second stop.

[0083] Figure 11 It is along the second embodiment Figure 1 A cross-sectional view after being cut along section line AA.

[0084] Figure 12 This is a three-dimensional schematic diagram of the coil frame and four magnetic holding components assembled according to the second embodiment.

[0085] Figure 13 This is an exploded view of the magnetic holding assembly of the second embodiment from one perspective.

[0086] Figure 14 This is an exploded view of the magnetic holding assembly of the second embodiment from another perspective.

[0087] Figure 15 This is a top view of the four magnetic holding components arranged in a fan shape.

[0088] Figure 16 This is a top view of the four magnetic holding components, which are roughly rectangular.

[0089] Figure 17 This is a top view of the four magnetic holding components, which are shaped like triangles. Detailed Implementation

[0090] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0091] It is understood that the terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0092] like Figures 1 to 3 As shown, the relay in this embodiment includes a housing 10, an insulating cover 20, a first stationary magnet 30, and an internal component 1. The insulating cover 20, the first stationary magnet 30, and the internal component 1 are all disposed within the housing 10. The insulating cover 20 is connected to one side surface of the first stationary magnet 30, and the internal component 1 is configured to switch the relay between a first state and a second state in response to an input signal.

[0093] In one embodiment, one of the first state and the second state is a relay-controlled external circuit in parallel, and the other of the first state and the second state is a relay-controlled external circuit in series.

[0094] Of course, in other embodiments, the internal component 1 can be configured to switch the relay between a closed state and an open state in response to an input signal, i.e., one of the first state and the second state is that the relay is in a closed state, and the other of the first state and the second state is that the relay is in an open state.

[0095] As an example, the outer casing 10 may include a first casing 11 and a second casing 12, which are connected to form a cavity for accommodating the insulating cover 20, the first static magnetic conductor 30, and the internal component 1. The shape of the first casing 11 and the second casing 12 connected together may be a cuboid, a cylinder, etc. In the embodiments of this application, the first casing 11 and the second casing 12 are connected to form a hollow cuboid, but this is not a limitation.

[0096] In one embodiment, both the first shell 11 and the second shell 12 are cuboid in shape and each has an opening on one side. The opening of the first shell 11 is opposite to the opening of the second shell 12, and the first shell 11 and the second shell 12 are fastened together to form a cavity for accommodating the insulating cover 20, the first static magnetic conductor 30, and the internal component 1.

[0097] Of course, in other embodiments, the first shell 11 can be a flat plate structure, and the second shell 12 can be a cuboid shape with an opening, forming a cavity after the first shell 11 and the second shell 12 are fastened together.

[0098] In one embodiment, the first stationary magnet 30 is a yoke plate 31, which has a first through hole 311 extending through the yoke plate 31 along its thickness direction. An insulating cover 20 is connected to one side surface of the yoke plate 31 along its thickness direction and covers the first through hole 311. The insulating cover 20 and the yoke plate 31 form a contact chamber 23, which communicates with the first through hole 311.

[0099] like Figure 2 and Figure 3 As shown, the internal component 1 includes a static contact component 1a and a moving component 1b. The static contact component 1a is fixedly mounted on the insulating cover 20, and at this time, the static contact component 1a and the first static magnetic conductor 30 are relatively fixed in position. The moving component 1b is movably inserted into the first through hole 311 for contacting or separating from the static contact component 1a.

[0100] In one embodiment, when the relay is in a first state, the moving component 1b is in contact with a portion of the stationary contact component 1a; when the relay is in a second state, the moving component 1b is in contact with another portion of the stationary contact component 1a.

[0101] like Figure 2 As shown, the moving assembly 1b includes a push rod member 1d and a first moving contact 421 and a second moving contact 521 mounted on the push rod member 1d. The push rod member 1d is movably disposed within the first through hole 311.

[0102] like Figure 3 As shown, the static contact assembly 1a includes a plurality of first static contacts 41 and a plurality of second static contacts 51, which are fixedly disposed on the insulating cover 20. A first moving contact 421 is used to contact or separate from the first static contacts 41, and a second moving contact 521 is used to contact or separate from the second static contacts 51.

[0103] like Figures 3 to 6 As shown, the internal component 1 also includes a yoke 32, a magnetic drive assembly 1c, a coil frame 34, and multiple magnetic holding assemblies 60. The yoke 32 is connected to a first stationary magnet 30, and the yoke 32 and the first stationary magnet 30 form a magnetic circuit space 33. The magnetic drive assembly 1c is located within the magnetic circuit space 33 and is connected to the push rod member 1d of the moving assembly 1b. The magnetic drive assembly 1c is configured to drive the moving assembly 1b to move in response to an input signal, so that the relay switches between a first state and a second state. The coil frame 34 is disposed within the magnetic circuit space 33 and surrounds the magnetic drive assembly 1c. The coil frame 34 has multiple isolation structures 344, which are arranged at circumferential intervals along the magnetic drive assembly 1c, and the multiple isolation structures 344 separate multiple mounting areas 346. The multiple magnetic holding assemblies 60 are correspondingly mounted in the multiple mounting areas 346 of the coil frame 34.

[0104] The relay of this application embodiment includes a coil frame 34 and a plurality of magnetic holding components 60. The coil frame 34 has a plurality of isolation structures 344, which separate a plurality of mounting areas 346. The plurality of magnetic holding components 60 are correspondingly mounted in the plurality of mounting areas 346. The isolation structures 344 can reduce the influence of the attraction or repulsion between adjacent magnetic holding components 60 on the magnetic holding force, thereby ensuring that the plurality of magnetic holding components 60 have a sufficiently large magnetic holding force.

[0105] In one embodiment, the orthographic projection of each magnetic holding component 60 onto a target plane is a first projection, and the orthographic projection of the coil frame 34 onto the target plane is a second projection. The ratio of the sum of the areas of the multiple first projections to the area of ​​the second projection is R, where 0.9 ≤ R ≤ 1.2. The target plane is perpendicular to the axis of the magnetic drive component 1c.

[0106] In the embodiments of this application, since 0.9≤R≤1.2, the volume of the multiple magnetic holding components 60 is increased while the height remains unchanged, thereby increasing the magnetic field strength and further improving the magnetic holding force.

[0107] In one embodiment, R can be 0.9, 0.95, 1, 1.05, 1.1, 1.15, or 1.2.

[0108] It is understood that the number of mounting areas 346 and magnetic retaining components 60 is the same, and can be two, three, four, five, or other numbers. In the embodiment of this application, the number of mounting areas 346 and magnetic retaining components 60 is four.

[0109] It should be noted that the axial direction of the magnetic drive assembly 1c is parallel to the direction of movement of the push rod assembly 1d.

[0110] In one embodiment, a plurality of isolation structures 344 are arranged at circumferential intervals along the magnetic drive assembly 1c, but are not limited thereto.

[0111] like Figure 6 As shown, the isolation structure 344 is flat and is radially parallel to the magnetic drive assembly 1c.

[0112] In this embodiment, the isolation structure 344 is designed as a flat plate and extends radially along the magnetic drive assembly 1c. This allows for a larger space in the mounting area 346, which in turn allows for a larger volume of the magnetic holding assembly 60, further improving the magnetic holding force.

[0113] In one embodiment, the magnetic holding assembly 60 is a permanent magnet 61.

[0114] like Figures 5 to 7As shown, the coil frame 34 has multiple first limiting structures 345, and the magnetic holding assembly 60 has a second limiting structure 621. The second limiting structures 621 of the multiple magnetic holding assemblies 60 are matched with the multiple first limiting structures 345 for limiting.

[0115] In this embodiment, the magnetic holding assembly 60 and the coil frame 34 are mutually restrained by the first restraining structure 345 and the second restraining structure 621, which significantly improves the installation accuracy of the magnetic holding assembly 60 and the coil frame 34, ensuring that the gap between the magnetic holding assembly 60 and the inner surface of the yoke 32 is minimized or even tightly fitted, thereby reducing the magnetic gap between the magnetic holding assembly 60 and the yoke 32, improving the magnetic conductivity, and thus increasing the magnetic holding force of the magnetic holding assembly 60. Furthermore, the restraining fit between the magnetic holding assembly 60 and the coil frame 34 prevents the magnetic holding assembly 60 from detaching from the coil frame 34 during transport. In one embodiment, the magnetic holding assembly 60 has a second restraining structure 621 on both sides along the axial direction of the magnetic drive assembly 1c.

[0116] In this embodiment of the application, the magnetic holding assembly 60 has a second limiting structure 621 on both sides. When the magnetic holding assembly 60 is installed in the installation area 346, the magnetic holding assembly 60 can be assembled in two installation directions, which significantly improves the convenience of assembly.

[0117] like Figure 6 and Figure 7 As shown, one of the first limiting structure 345 and the second limiting structure 621 is a protrusion and the other is a groove, with the protrusion located within the groove.

[0118] For example, the coil holder 34 has a protrusion and the magnetic holding assembly 60 has a groove; or, the coil holder 34 has a groove and the magnetic holding assembly 60 has a protrusion.

[0119] like Figure 4 As shown, the side surface of each magnetic holding component 60 facing away from the magnetic drive component 1c is in contact with the yoke 32. This design improves the magnetic conductivity of the magnetic holding component 60, thereby increasing the magnetic holding force.

[0120] Each magnetic holding assembly 60 has a magnetically conductive surface 631 facing the magnetic drive assembly 1c, and the magnetically conductive surface 631 is adapted to the shape of the outer peripheral side surface of the magnetic drive assembly 1c. In this way, the magnetic gap between the magnetic holding assembly 60 and the magnetic drive assembly 1c is significantly reduced, thereby improving the magnetic holding force.

[0121] In one embodiment, the magnetically conductive surface 631 of the magnetic holding assembly 60 is a concave arc surface, but it is not limited thereto. When the outer peripheral side surface of the magnetic drive assembly 1c has other shapes, the magnetically conductive surface 631 of the magnetic holding assembly 60 can be adjusted accordingly.

[0122] In one embodiment, the magnetically conductive surface 631 is in contact with the outer peripheral side of the magnetic drive assembly 1c. This significantly reduces the magnetic gap between the magnetic holding assembly 60 and the magnetic drive assembly 1c, thereby significantly improving the magnetic holding force.

[0123] like Figure 6 As shown, the coil frame 34 includes a winding drum 341, a first baffle 342, and a second baffle 343. The winding drum 341 is sleeved on the outer periphery of the magnetic drive assembly 1c. The first baffle 342 and the second baffle 343 are respectively connected to the two axial ends of the winding drum 341. A plurality of magnetic holding assemblies 60 are disposed on the side of the first baffle 342 facing away from the second baffle 343. The winding drum 341 is used for winding of a winding (not shown in the figure), and the first baffle 342 and the second baffle 343 can prevent the winding from shifting along the axial direction of the winding drum 341.

[0124] The first baffle 342 is provided with a first limiting structure 345 at the position corresponding to the installation area 346. A plurality of isolation structures 344 protrude from the side surface of the first baffle 342 facing away from the second baffle 343 and are arranged at intervals along the circumference of the magnetic drive assembly 1c.

[0125] In this embodiment, the coil frame 34 has four isolation structures 344, which are arranged at equal intervals along the circumference of the magnetic drive assembly 1c. The first baffle 342 has four first limiting structures 345 on its side facing away from the second baffle 343.

[0126] In one embodiment, the isolation structure 344 is a long, flat plate. The first baffle 342 is square, and there are four isolation structures 344. One end of each of the four isolation structures 344 is connected to one of the four corners of the first baffle 342, and they extend from the four corners of the first baffle 342 radially toward the center of the first baffle 342 along the magnetic drive assembly 1c.

[0127] like Figure 6 As shown, the winding drum 341 has a central hole 341a through which the magnetic drive assembly 1c passes, and the isolation structure 344 extends radially along the central hole 341a.

[0128] In one embodiment, a plurality of isolation structures 344 are arranged at equal intervals along the circumference of the central hole 341a, but this is not a limitation.

[0129] Of course, in other embodiments, the shape of the central hole 341a can also be square, rectangular, etc.

[0130] like Figure 3 and Figure 8As shown, the yoke 32 includes a base plate 321 and a side plate 322. The base plate 321 is connected to the magnetic drive assembly 1c. One end of the side plate 322 is connected to the first stationary magnet 30, and the other end is connected to the base plate 321. The base plate 321, the side plate 322, and the first stationary magnet 30 form a magnetic circuit space 33. The side plate 322 has an inner surface 322b that fits against the plurality of magnetic holding assemblies 60.

[0131] In the embodiments of this application, the yoke 32 includes a side plate 322, which surrounds the magnetic holding assembly 60, and the side plate 322 has an inner surface 322b that fits against the magnetic holding assembly 60. This design improves the magnetic conductivity of the magnetic holding assembly 60, thereby increasing the magnetic holding force.

[0132] In one embodiment, the side plate 322 includes four magnetic plates 322a, each corresponding to one of the four magnetic holding assemblies 60. Each magnetic plate 322a is connected to the substrate 321 and has an inner surface 322b.

[0133] The four magnetic plates 322a can be integrated with the substrate 321 or be separate structures; or, two of the magnetic plates 322a arranged opposite each other can be integrated with the substrate 321, while the other two magnetic plates 322a arranged opposite each other can be separate structures from the substrate 321.

[0134] In one embodiment, the four magnetic plates 322a are interconnected to form a rectangular ring structure. Of course, in other embodiments, the four magnetic plates 322a may also be spaced apart.

[0135] Of course, as a modified embodiment, the side plate 322 can be a closed ring structure, and the ring structure can be a circular ring structure or a rectangular ring structure, etc. This application does not make any special limitation in this regard.

[0136] like Figure 2 and Figure 9As shown, the magnetic drive assembly 1c includes a first moving magnetic conductor 43, a second stationary magnetic conductor 44, a second moving magnetic conductor 45, and a first elastic member 46. The first moving magnetic conductor 43 is located on the side of the first stationary magnetic conductor 30 facing away from the stationary contact assembly 1a and is fixedly connected to the push rod member 1d. When the relay is in the first state, the first moving magnetic conductor 43 is in contact with the first stationary magnetic conductor 30, and the first moving magnetic conductor 43 is separated from the second moving magnetic conductor 45. The second stationary magnetic conductor 44 is located on the side of the first moving magnetic conductor 43 facing away from the first stationary magnetic conductor 30 and is fixedly disposed relative to the first stationary magnetic conductor 30. The second moving magnetic conductor 45 is located on the side of the first moving magnetic conductor 43 facing away from the first stationary magnetic conductor 30 and is movable relative to the second stationary magnetic conductor 44. The first elastic element 46 is connected to the second stationary magnetic conductor 44 and the second moving magnetic conductor 45. When the relay is in the second state, the first moving magnetic conductor 43 is in contact with the second moving magnetic conductor 45, the first moving magnetic conductor 43 is separated from the first stationary magnetic conductor 30, and the second moving magnetic conductor 45 squeezes the first elastic element 46 so that the first elastic element 46 provides elastic force to the second moving magnetic conductor 45 due to the pressure.

[0137] In this embodiment of the application, the second moving magnetic material 45 is movable relative to the first stationary magnetic material 30 along the moving direction of the first moving magnetic material 43. Therefore, when assembling the relay, even if at least one of the first stationary magnetic material 30, the first moving magnetic material 43, the second stationary magnetic material 44, and the second moving magnetic material 45 has a processing error and / or assembly error in the moving direction of the first moving magnetic material 43, since the second moving magnetic material 45 is designed to be movable, the second moving magnetic material 45 can compensate for the above-mentioned processing error and / or assembly error by moving, thereby ensuring that the magnetic gap of the relay is maintained at a preset value and ensuring the normal operation of the relay.

[0138] When the relay is in the second state, the first moving magnetic body 43 and the second moving magnetic body 45 are in direct contact. The magnetic field generated by the second moving magnetic body 45 will not be affected by the gap between the first moving magnetic body 43 and the second moving magnetic body 45, thereby ensuring the magnitude of the holding force provided by the second moving magnetic body 45.

[0139] Furthermore, when the first elastic element 46 is compressed by the second moving magnetic body 45, it provides an elastic force to the second moving magnetic body 45. This allows the first elastic element 46 to act as a buffer when the first moving magnetic body 43 contacts the second moving magnetic body 45, converting the kinetic energy of the first moving magnetic body 43 into the elastic potential energy of the first elastic element 46. This reduces the force of the first moving magnetic body 43 impacting the second moving magnetic body 45, thus reducing noise. Additionally, when the relay is in the second state, the first elastic element 46 provides an elastic force to the second moving magnetic body 45, providing initial kinetic energy to the second moving magnetic body 45 to a certain extent. When the relay switches from the second state to the first state, the elastic force of the first elastic element 46 on the second moving magnetic body 45 reduces the time from when the relay coil is energized to when the second moving magnetic body 45 begins to move, improving the relay's switching response time.

[0140] It should be noted that the term "magnetic gap" refers to the distance between the first moving magnetic element 43 and the first stationary magnetic element 30 when the coil assembly of the relay is de-energized.

[0141] In one embodiment, the first elastic element 46 is located between the second stationary magnet 44 and the second moving magnet 45.

[0142] Furthermore, one end of the first elastic member 46 abuts against the second static magnetic conductor 44, and the other end abuts against the second dynamic magnetic conductor 45.

[0143] like Figure 2 As shown, the magnetic drive assembly 1c also includes a metal shell 48, which is connected to the surface of the first stationary magnetic conductor 30 facing away from the stationary contact assembly 1a, and the internal space of the metal shell 48 communicates with the first through hole 311. The first moving magnetic conductor 43 and the second moving magnetic conductor 45 are movably located inside the metal shell 48, which has a second through hole 481. The second stationary magnetic conductor 44 is fixedly connected to the metal shell 48 and seals the second through hole 481.

[0144] In this embodiment of the application, the magnetic drive assembly 1c further includes a metal shell 48, which is connected to the side surface of the first static magnetic conductor 30 facing away from the static contact assembly 1a. The second static magnetic conductor 44 is fixedly connected to the metal shell 48 and seals the second through hole 481. In this way, the interior of the metal shell 48 and the contact chamber 23 formed by the insulating cover 20 and the first static magnetic conductor 30 are all sealed chambers, so that the contact chamber 23 can be filled with arc-extinguishing gas, thereby reducing the risk of arcing when the first moving contact 421 contacts or separates from the first static contact 41.

[0145] Furthermore, as mentioned above, when the first moving magnetic conductor 43 and the second moving magnetic conductor 45 come into contact, the first elastic element 46 can play a buffering role, thereby reducing the force of the first moving magnetic conductor 43 impacting the second moving magnetic conductor 45, avoiding the problem of the second static magnetic conductor 44 and the metal shell 48 being loosely connected due to the continuous impact of the first moving magnetic conductor 43, and thus avoiding the phenomenon of air leakage in the metal shell 48.

[0146] In one embodiment, the coil frame 34 surrounds the outer periphery of the metal shell 48, and the magnetic surface 631 of the inner magnetic conductor 63 can be attached to the outer peripheral side of the metal shell 48.

[0147] like Figure 2 As shown, the magnetic drive assembly 1c also includes a second elastic element 47, which is located between the first static magnetic conductor 30 and the first dynamic magnetic conductor 43, and is used to provide an elastic force to the first dynamic magnetic conductor 43 to move toward the second dynamic magnetic conductor 45.

[0148] In the embodiments of this application, the second elastic element 47 can provide the first moving magnetic body 43 with an elastic force that moves it toward the second moving magnetic body 45. When the relay switches from the first state to the second state, the second elastic element 47 provides initial kinetic energy to the first moving magnetic body 43 to a certain extent, thereby improving the switching response time of the relay.

[0149] In one embodiment, the first moving magnetic conductor 43 is provided with a receiving groove 431 on the side facing the first stationary magnetic conductor 30, and at least a portion of the second elastic member 47 is located in the receiving groove 431.

[0150] In this embodiment of the application, by providing a receiving groove 431 on the side of the first moving magnetic conductor 43 facing the first stationary magnetic conductor 30, and at least a portion of the second elastic member 47 is located in the receiving groove 431, the space occupied by the second elastic member 47 in the direction of movement of the moving component 1b can be reduced, which is beneficial to achieving product miniaturization design.

[0151] In one embodiment, when the relay is in the second state, the first elastic element 46 has a first deformation, which is greater than zero. When the first moving magnetic body 43 separates from the second moving magnetic body 45, the first elastic element 46 is in its original length state or is compressed by the second moving magnetic body 45 and has a second deformation; wherein, when the first elastic element 46 has a second deformation, the first deformation is greater than the second deformation.

[0152] In this embodiment, when the first moving magnetic material 43 and the second moving magnetic material 45 separate, the second moving magnetic material 45 compresses the first elastic element 46, causing the first elastic element 46 to have a second deformation. The second deformation is greater than zero, meaning the first elastic element 46 is in a pre-compressed state between the second moving magnetic material 45 and the second stationary magnetic material 44. When the first moving magnetic material 43 and the second moving magnetic material 45 separate, because the first elastic element 46 is in a pre-compressed state, the first elastic element 46 can be stably connected between the second moving magnetic material 45 and the second stationary magnetic material 44, preventing the first elastic element 46 from shaking and producing an impact sound.

[0153] In one embodiment, the relay further includes a stop structure configured to stop the second moving magnet 45 from moving toward the first stationary magnet 30 when the first moving magnet 43 is separated from the second moving magnet 45.

[0154] In one implementation, such as Figure 10 As shown, the stop structure includes a first stop portion 451 and a second stop portion 4421. The second moving magnetic conductor 45 has the first stop portion 451, and the second stationary magnetic conductor 44 has the second stop portion 4421. The first stop portion 451 is located on the side of the second stop portion 4421 that is away from the first stationary magnetic conductor 30. The second stop portion 4421 is configured to stop the first stop portion 451 from moving toward the first stationary magnetic conductor 30 when the first moving magnetic conductor 43 is separated from the second moving magnetic conductor 45.

[0155] In this embodiment, the second moving magnetic material 45 tends to move towards the first stationary magnetic material 30 under the elastic force of the first elastic member 46. A first stop 451 is provided on the second moving magnetic material 45, and a second stop 4421 is provided on the second stationary magnetic material 44. The first stop 451 is located on the side of the second stop 4421 facing away from the first stationary magnetic material 30. When the first moving magnetic material 43 separates from the second moving magnetic material 45, the second stop 4421 can prevent the first stop 451 from moving towards the first stationary magnetic material 30. In other words, when the first moving magnetic material 43 separates from the second moving magnetic material 45, the second moving magnetic material 45 can be stably arranged under the combined action of the second stop 4421 and the first elastic member 46, preventing the second moving magnetic material 45 from shaking.

[0156] like Figure 10As shown, when the relay is in the second state, there is a gap G between the second stop portion 4421 and the first stop portion 451. Specifically, during the relay's transition from the first state to the second state, the first moving magnetic element 43 gradually approaches the second moving magnetic element 45. When the first moving magnetic element 43 contacts the second moving magnetic element 45, the first moving magnetic element 43 does not stop moving but continues to move downwards until a gap G is formed between the second stop portion 4421 and the first stop portion 451. That is, during the process of the first moving magnetic element 43 and the second moving magnetic element 45 just making contact and continuing to move, the first moving magnetic element 43 drives the second moving magnetic element 45 to compress the first elastic element 46, causing the first elastic element 46 to deform under pressure.

[0157] In this embodiment, the first elastic element 46 provides an elastic force to the second moving magnet 45 when pressed by the second moving magnet 45. Since there is a gap G between the second stop 4421 and the first stop 451 when the relay is in the second state, the first elastic element 46 can act as a buffer when the first moving magnet 43 contacts the second moving magnet 45, converting the kinetic energy of the first moving magnet 43 into the elastic potential energy of the first elastic element 46. This reduces the force of the first moving magnet 43 impacting the second moving magnet 45, thus reducing noise. Furthermore, when the relay is in the second state, the first elastic element 46 provides an elastic force to the second moving magnet 45, providing initial kinetic energy to the second moving magnet 45 to a certain extent. When the relay switches from the second state to the first state, the elastic force of the first elastic element 46 on the second moving magnet 45 reduces the time from when the relay coil is energized to when the second moving magnet 45 begins to move, improving the relay's switching response time.

[0158] Furthermore, as mentioned above, when the first moving magnetic conductor 43 and the second moving magnetic conductor 45 come into contact, the first elastic element 46 can play a buffering role, thereby reducing the force of the first moving magnetic conductor 43 impacting the second moving magnetic conductor 45, avoiding the problem of the second static magnetic conductor 44 and the first metal shell 48 being loosely connected due to the continuous impact of the first moving magnetic conductor 43, and thus avoiding the first metal shell 48 from leaking air.

[0159] Of course, in another embodiment, when the relay is in the second state, the second stop portion 4421 is in contact with the first stop portion 451. Specifically, during the relay's transition from the first state to the second state, the first moving magnetic element 43 gradually approaches the second moving magnetic element 45. When the first moving magnetic element 43 and the second moving magnetic element 45 just make contact, the relay is in the second state, meaning the first moving magnetic element 43 will not continue to move downwards. At this time, the second moving magnetic element 45 will not further compress the first elastic element 46.

[0160] like Figure 9As shown, the second stationary magnetic conductor 44 includes a magnetic post 441 and a retaining ring 442. The magnetic post 441 is located on the side of the first movable magnetic conductor 43 facing away from the first stationary magnetic conductor 30 and passes through the second through hole 481. The retaining ring 442 is fixedly connected to the end of the magnetic post 441 near the first movable magnetic conductor 43, and the outer periphery of the retaining ring 442 has a second stop portion 4421. The second movable magnetic conductor 45 has a cylindrical structure and is movably sleeved on at least a portion of the magnetic post 441.

[0161] The outer peripheral side of the magnetic post 441 has a first step 4411 and a second step 4412. The first step 4411 is closer to the first moving magnetic body 43 than the second step 4412. The retaining ring 442 is connected to the first step 4411. The first stop part 451 is located between the second stop part 4421 and the tread of the second step 4412. One end of the first elastic member 46 abuts against the tread of the second step 4412, and the other end abuts against the first stop part 451.

[0162] In one embodiment, the magnetic post 441 includes a first cylinder 441a, a second cylinder 441b, and a third cylinder 441c arranged coaxially. The second cylinder 441b is connected between the first cylinder 441a and the third cylinder 441c. The bottom radius of the first cylinder 441a is smaller than the bottom radius of the second cylinder 441b, which is smaller than the bottom radius of the third cylinder 441c. That is, the bottom radius of the first cylinder 441a is smaller than the bottom radius of the second cylinder 441b, and the bottom radius of the second cylinder 441b is smaller than the bottom radius of the third cylinder 441c.

[0163] The outer peripheral side of the first cylinder 441a and the top surface of the second cylinder 441b form a first step 4411, and the outer peripheral side of the second cylinder 441b and the top surface of the third cylinder 441c form a second step 4412. A retaining ring 442 is fixedly fitted onto the outer periphery of the first cylinder 441a.

[0164] In one embodiment, the first stop portion 451 is annular and is movably fitted onto the outer periphery of the second cylinder 441b.

[0165] It should be added that, in a modified embodiment, the first stationary magnetic conductor 30 may further include a yoke plate 31 and a sub-magnetic conductor (not shown in the figure). The first stationary contact 41 and the first moving contact 421 are located on one side of the thickness direction of the yoke plate 31, and the sub-magnetic conductor, the first moving magnetic conductor 43, the second moving magnetic conductor 45 and the second stationary magnetic conductor 44 are located on the other side of the thickness direction of the yoke plate 31. The sub-magnetic conductor is fixedly connected to the yoke plate 31. When the relay is in the first state, the first moving magnetic conductor 43 is in contact with the sub-magnetic conductor.

[0166] The first static magnetic conductor 30, the first dynamic magnetic conductor 43, the second static magnetic conductor 44, and the second dynamic magnetic conductor 45 mentioned above are all made of magnetically conductive materials. These materials can be, but are not limited to, iron, silicon steel, soft magnetic alloys, etc.

[0167] It is understood that the magnetic drive component 1c of this application is not limited to the above structure, and may also be other structures.

[0168] like Figures 11 to 14 As shown, the similarities between the second embodiment and the first embodiment of this application will not be repeated here, but the differences are as follows:

[0169] Each magnetic holding assembly 60 includes a permanent magnet 61, an outer magnetic conductor 62, and an inner magnetic conductor 63. The outer magnetic conductor 62 has a second limiting structure 621 and is attached to the side surface of the permanent magnet 61 facing away from the magnetic drive assembly 1c. The inner magnetic conductor 63 is attached to the side surface of the permanent magnet 61 facing the magnetic drive assembly 1c.

[0170] The outer magnetic conductor 62 and the inner magnetic conductor 63 are made of magnetically conductive material. The magnetically conductive material can be, but is not limited to, iron, silicon steel, soft magnetic alloys, etc.

[0171] Understandably, permanent magnet 61 has the characteristics of high hardness and high brittleness, which makes the cutting tools prone to wear and the material prone to chipping and cracking during the processing of permanent magnet 61. This greatly increases the difficulty of forming the limiting structure on permanent magnet 61.

[0172] In this embodiment of the application, the second limiting structure 621 is set on the outer magnet 62 by taking advantage of the easy processing characteristics of the outer magnet 62. This avoids the problem of the permanent magnet 61 being difficult to process and ensures the assembly accuracy of the magnetic holding assembly 60 and the coil frame 34.

[0173] In one embodiment, the outer magnetic conductor 62 has a second limiting structure 621 on both sides along the axial direction of the magnetic drive assembly 1c.

[0174] like Figure 12 and Figure 14 As shown, the inner magnetic conductor 63 has a magnetically conductive surface 631 facing the magnetic drive assembly 1c, and the magnetically conductive surface 631 is adapted to the shape of the outer peripheral side surface of the magnetic drive assembly 1c.

[0175] As mentioned above, due to the high difficulty in processing the permanent magnet 61, it is not easy to process one side surface of the permanent magnet 61 into a shape that matches the outer peripheral side surface of the magnetic drive assembly 1c. In this embodiment, by providing an inner magnetic conductor 63 on the side of the permanent magnet 61 facing the magnetic drive assembly 1c, and processing the surface of the inner magnetic conductor 63 on the side facing the magnetic drive assembly 1c into a shape that matches the outer peripheral side surface of the magnetic drive assembly 1c, the magnetic gap between the inner magnetic conductor 63 and the magnetic drive assembly 1c can be significantly reduced, thereby improving the magnetic holding force, while also reducing the processing difficulty.

[0176] In one embodiment, the magnetically conductive surface 631 of the inner magnetic conductor 63 is a concave arc surface, but this is not a limitation. When the outer peripheral side surface of the magnetic drive assembly 1c has other shapes, the magnetically conductive surface 631 of the inner magnetic conductor 63 can be adjusted accordingly.

[0177] In one embodiment, at least one of the outer magnetic conductor 62 and the inner magnetic conductor 63 includes multiple stacked magnetic sheets, which are thin sheets.

[0178] In the embodiments of this application, the outer magnetic conductor 62 and / or the inner magnetic conductor 63 include multiple magnetic sheets, and the thickness of the magnetic sheets is small, which saves material costs.

[0179] It should be noted that the arrangement direction of the multiple magnetic sheets can be parallel to or perpendicular to the axis of the winding drum 341. When the multiple magnetic sheets are arranged perpendicular to the axis of the winding drum 341, the outermost magnetic sheet is provided with a second limiting structure 621. When the multiple magnetic sheets are arranged parallel to the axis of the winding drum 341, each magnetic sheet can be provided with a sub-limiting structure, and the sub-limiting structures of multiple magnetic sheets together constitute the second limiting structure 621. The isolation structure 344 is provided with a first limiting structure 345. For example, each magnetic sheet can be provided with a sub-protrusion. After multiple magnetic sheets are stacked, the multiple sub-protrusions are aligned to form a long strip-shaped protrusion.

[0180] It should be added that the orthographic projection of the magnetic holding component 60 in the above embodiments onto the target plane can be any of the following shapes:

[0181] Trapezoidal, sector-shaped, rectangular, and triangular shapes.

[0182] For example, such as Figure 4 As shown, the orthographic projection of the magnetic holding assembly 60 of the first embodiment of this application onto the target plane is a trapezoidal shape. Here, "trapezoidal" refers to a shape with curved edges and a trapezoidal outline. For example, Figure 4 The image shows a type of isosceles trapezoid, where the upper base of the isosceles trapezoid has a curve.

[0183] like Figure 15As shown, the orthographic projection of the magnetic holding assembly 60 onto the target plane is a sector.

[0184] like Figure 16 As shown, the orthographic projection of the magnetic holding assembly 60 onto the target plane is a rectangle-like shape. Here, "rectangle-like" refers to a shape with curved edges and a rectangular outline. For example, Figure 16 The image shows a square-like structure with one corner missing and two adjacent sides connected by curves.

[0185] like Figure 17 As shown, the orthographic projection of the magnetic holding assembly 60 onto the target plane is a triangle-like shape. Here, "triangle-like" refers to a shape with curved edges and a triangular outline. For example, Figure 17 The diagram shows a type of isosceles triangle, where the vertex angle is missing and the two legs are connected by a curve.

[0186] In summary, the relays of the embodiments of this application have at least the following advantages and beneficial effects:

[0187] The relay of this application embodiment includes a coil frame 34 and a plurality of magnetic holding components 60. The coil frame 34 has a plurality of isolation structures 344, which separate a plurality of mounting areas 346. The plurality of magnetic holding components 60 are correspondingly mounted in the plurality of mounting areas 346. The isolation structures 344 can reduce the influence of the attraction or repulsion between adjacent magnetic holding components 60 on the magnetic holding force, thereby ensuring that the plurality of magnetic holding components 60 have a sufficiently large magnetic holding force.

[0188] Furthermore, since 0.9≤R≤1.2, the volume of multiple magnetic holding components 60 is increased, thereby increasing the magnetic field strength while keeping the height unchanged, and further improving the magnetic holding force.

[0189] Furthermore, the isolation structure 344 is designed as a flat plate and extends radially along the magnetic drive assembly 1c, which allows for a larger space in the mounting area 346, thereby enabling the magnetic holding assembly 60 to be designed to be larger and further improving the magnetic holding force.

[0190] Furthermore, the magnetic holding assembly 60 and the coil frame 34 are mutually restrained by the first limiting structure 345 and the second limiting structure 621, which significantly improves the installation accuracy of the magnetic holding assembly 60 and the coil frame 34. This ensures that the gap between the magnetic holding assembly 60 and the inner surface of the yoke 32 is minimized or even tightly fitted, thereby reducing the magnetic gap between the magnetic holding assembly 60 and the yoke 32, improving the magnetic conductivity, and thus increasing the magnetic holding force of the magnetic holding assembly 60. In addition, the restrained fit between the magnetic holding assembly 60 and the coil frame 34 prevents the magnetic holding assembly 60 from detaching from the coil frame 34 during transport.

[0191] Furthermore, the magnetic retaining assembly 60 has a second limiting structure 621 on both sides, so that when the magnetic retaining assembly 60 is installed in the installation area 346, the magnetic retaining assembly 60 can be assembled in two installation directions, which significantly improves the ease of assembly.

[0192] Furthermore, taking advantage of the ease of processing of the outer magnetic conductor 62, the second limiting structure 621 is set on the outer magnetic conductor 62, which not only avoids the problem of difficult processing of the permanent magnet 61, but also ensures the assembly accuracy of the magnetic holding assembly 60 and the coil frame 34.

[0193] Furthermore, by providing an inner magnetic conductor 63 on the side of the permanent magnet 61 facing the magnetic drive assembly 1c, and processing the surface of the inner magnetic conductor 63 on the side facing the magnetic drive assembly 1c into a shape that matches the outer peripheral side surface of the magnetic drive assembly 1c, the magnetic gap between the inner magnetic conductor 63 and the magnetic drive assembly 1c can be significantly reduced, thereby improving the magnetic holding force, and the processing difficulty can be reduced.

[0194] Furthermore, the yoke 32 includes a side plate 322 that surrounds the magnetic holding assembly 60, and the side plate 322 has an inner surface 322b that fits into the magnetic holding assembly 60. This design improves the magnetic conductivity of the magnetic holding assembly 60, thereby increasing the magnetic holding force.

[0195] Furthermore, the relay also includes a first moving magnetic element 43, a second stationary magnetic element 44, and a second moving magnetic element 45. The second moving magnetic element 45 is movable relative to the first stationary magnetic element 30 along the moving direction of the first moving magnetic element 43. Therefore, during relay assembly, even if at least one of the first stationary magnetic element 30, the first moving magnetic element 43, the second stationary magnetic element 44, and the second moving magnetic element 45 experiences processing errors and / or assembly errors in the moving direction of the first moving magnetic element 43, the second moving magnetic element 45, being designed to be movable, can compensate for these errors by moving, thereby ensuring that the magnetic gap of the relay is maintained at a preset value and ensuring the normal operation of the relay. When the relay is in the second state, the first moving magnetic element 43 is in contact with the second moving magnetic element 45. The magnetic field generated by the second moving magnetic element 45 is not affected by the gap between the first moving magnetic element 43 and the second moving magnetic element 45, thereby ensuring the magnitude of the holding force provided by the second moving magnetic element 45.

[0196] Furthermore, the relay also includes a first elastic element 46, which is configured to provide an elastic force to the second moving magnet 45, causing the second moving magnet 45 to tend to move closer to the first moving magnet 43. When the first elastic element 46 is compressed by the second moving magnet 45, it can provide an elastic force to the second moving magnet 45, so that after the first moving magnet 43 contacts the second moving magnet 45, the first elastic element 46 can act as a buffer, converting the kinetic energy of the first moving magnet 43 into the elastic potential energy of the first elastic element 46, reducing the force of the first moving magnet 43 impacting the second moving magnet 45, and achieving the effect of reducing noise. In addition, when the relay is in the second state, the first elastic element 46 provides an elastic force to the second moving magnet 45, which to some extent provides initial kinetic energy to the second moving magnet 45. When the relay switches from the second state to the first state, the second moving magnetic body 45 is subjected to the elastic force of the first elastic element 46, which reduces the time from when the relay coil is energized and stores energy to when the second moving magnetic body 45 begins to move, thereby improving the relay's switching response time.

[0197] Furthermore, the magnetic drive assembly also includes a metal shell 48, which is connected to the surface of the first stationary magnet 30 facing away from the stationary contact assembly 1a. The second stationary magnet 44 is fixedly connected to the metal shell 48 and seals the second through hole 481. In this way, the interior of the metal shell 48 and the contact chamber 23 formed by the insulating cover 20 and the first stationary magnet 30 both form sealed chambers, allowing the contact chamber 23 to be filled with arc-extinguishing gas, reducing the risk of arcing when the first moving contact 421 contacts the first stationary contact 41 and the second moving contact 521 contacts the second stationary contact 51. In addition, when the first moving magnet 43 contacts the second moving magnet 45, the first elastic member 46 can act as a buffer, thereby reducing the force of the first moving magnet 43 impacting the second moving magnet 45, avoiding the problem of the second stationary magnet 44 and the metal shell 48 becoming loose due to continuous impact, and thus preventing the metal shell 48 from leaking gas.

[0198] Furthermore, under the elastic force of the first elastic member 46, the second moving magnetic conductor 45 tends to move towards the first stationary magnetic conductor 30. A first stop portion 451 is provided on the second moving magnetic conductor 45, and a second stop portion 4421 is provided on the second stationary magnetic conductor 44, with the first stop portion 451 located on the side of the second stop portion 4421 facing away from the first stationary magnetic conductor 30. When the first moving magnetic conductor 43 separates from the second moving magnetic conductor 45, the second stop portion 4421 can prevent the first stop portion 451 from moving towards the first stationary magnetic conductor 30, thus preventing the second moving magnetic conductor 45 and the first moving magnetic conductor 43 from moving together. The advantages of setting the first stop 451 and the second stop 4421 are as follows: Firstly, during the process of the relay switching from the first state to the second state, it avoids the second moving magnet 45 from displacing a long distance relative to the second stationary magnet 44, thereby preventing the second moving magnet 45 and the second stationary magnet 44 from jamming. Secondly, if the gap between the second moving magnet 45 and the second stationary magnet 44 is increased, it will affect the magnetic efficiency between the second moving magnet 45 and the second stationary magnet 44. Furthermore, if the first moving magnet 43 and the second moving magnet 45 move simultaneously, their combined weight will increase power consumption. Finally, the second moving magnet 45 can attract the first moving magnet 43 to keep the relay in the second state. If the first moving magnet 43 and the second moving magnet 45 move together, the relay in the second state will be unable to be held in the second state by relying solely on the lateral holding force, which will result in insufficient holding force. Furthermore, when the first moving magnetic conductor 43 separates from the second moving magnetic conductor 45, the second moving magnetic conductor 45 can be stably arranged under the combined action of the second stop 4421 and the first elastic member 46, thus preventing swaying.

[0199] It is understood that the various embodiments / implementations provided in this application can be combined with each other without creating contradictions, and will not be described one by one here.

[0200] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0201] In the description of the embodiments of the application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the application.

[0202] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the claims. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0203] The above are merely preferred embodiments of the application examples and are not intended to limit the application examples. For those skilled in the art, the application examples can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the application examples should be included within the protection scope of the application examples.

Claims

1. A relay, characterized in that, include: Magnetic drive components; A coil frame surrounds the magnetic drive assembly; The coil frame has multiple isolation structures, which separate multiple installation areas. as well as Multiple magnetic holding components are correspondingly disposed in multiple mounting areas.

2. The relay according to claim 1, characterized in that, The isolation structure is flat.

3. The relay according to claim 1, characterized in that, The orthographic projection of each magnetic holding component onto a target plane is a first projection, and the orthographic projection of the coil frame onto the target plane is a second projection. The ratio of the sum of the areas of the multiple first projections to the area of ​​the second projection is R, where 0.9 ≤ R ≤ 1.2; wherein the target plane is perpendicular to the axis of the magnetic drive component.

4. The relay according to claim 1, characterized in that, The plurality of said isolation structures are arranged at circumferential intervals along the magnetic drive assembly.

5. The relay according to claim 1, characterized in that, The coil frame has multiple first limiting structures, and the magnetic holding assembly has a second limiting structure. The second limiting structures of the multiple magnetic holding assemblies are correspondingly matched with the multiple first limiting structures for limiting.

6. The relay according to claim 5, characterized in that, One of the first limiting structure and the second limiting structure is a protrusion, and the other is a groove, wherein the protrusion is located within the groove; and / or, The magnetic holding assembly has the second limiting structure on both sides along the axial direction of the magnetic drive assembly.

7. The relay according to claim 5, characterized in that, The magnetic holding assembly includes a permanent magnet and an outer magnetic conductor. The outer magnetic conductor has the second limiting structure, and the outer magnetic conductor is attached to the side surface of the permanent magnet facing away from the magnetic drive assembly.

8. The relay according to claim 7, characterized in that, The external magnetic conductor comprises multiple stacked magnetic sheets.

9. The relay according to claim 5, characterized in that, The coil frame also includes a winding cylinder, a first baffle and a second baffle. The winding cylinder is sleeved on the outer periphery of the magnetic drive assembly, and the first baffle and the second baffle are respectively connected to the two axial ends of the winding cylinder. Multiple isolation structures protrude from the side surface of the first baffle facing away from the second baffle, and the first baffle is provided with the first limiting structure at the position corresponding to the installation area.

10. The relay according to claim 1, characterized in that, The magnetic holding assembly has a magnetically conductive surface facing the magnetic drive assembly, the magnetically conductive surface being adapted to the shape of the outer peripheral side surface of the magnetic drive assembly.

11. The relay according to claim 10, characterized in that, The magnetic holding assembly includes a permanent magnet and an inner magnetic conductor. The inner magnetic conductor is attached to the side surface of the permanent magnet facing the magnetic drive assembly, and the inner magnetic conductor has the magnetically conductive surface.

12. The relay according to claim 11, characterized in that, The inner magnetic conductor comprises multiple stacked magnetic sheets.

13. The relay according to claim 10, characterized in that, The magnetically conductive surface is a concave arc surface; and / or, the magnetically conductive surface is in contact with the outer peripheral side surface of the magnetic drive assembly.

14. The relay according to claim 1, characterized in that, The coil frame includes a winding cylinder, a first baffle, and a second baffle. The winding cylinder is sleeved on the outer periphery of the magnetic drive assembly, and the first baffle and the second baffle are respectively connected to the two axial ends of the winding cylinder. Multiple isolation structures protrude from the side surface of the first baffle facing away from the second baffle.

15. The relay according to claim 14, characterized in that, The first baffle is square, and there are four isolation structures. One end of each of the four isolation structures is connected to one of the four corners of the first baffle, and they extend from the four corners of the first baffle along the radial direction of the magnetic drive assembly toward the center of the first baffle.

16. The relay according to claim 14, characterized in that, The winding bobbin has a central hole through which the magnetic drive assembly passes, and the isolation structure extends radially along the central hole.

17. The relay according to claim 16, characterized in that, The multiple isolation structures are arranged at equal intervals along the circumference of the central hole.

18. The relay according to any one of claims 1-17, characterized in that, The relay further includes a first stationary magnet and a yoke, the yoke being connected to the first stationary magnet and the yoke and the first stationary magnet forming a magnetic circuit space. The yoke includes a base plate and a side plate. The base plate is connected to the magnetic drive assembly. One end of the side plate is connected to the first static magnet, and the other end is connected to the base plate. The base plate, the side plate, and the first static magnet form the magnetic circuit space. The side surface of each magnetic holding assembly facing away from the magnetic drive assembly is attached to the inner surface of the side plate.

19. The relay according to any one of claims 1-17, characterized in that, The orthographic projection of each magnetic holding assembly onto a target plane is a first projection, and the orthographic projection of the mounting area corresponding to that magnetic holding assembly onto the target plane is a second projection, wherein the target plane is perpendicular to the axis of the magnetic drive assembly; the shapes of the first projection and the second projection are one of the following: Trapezoidal, sector-shaped, rectangular, and triangular shapes.

20. The relay according to any one of claims 1-17, characterized in that, The relay further includes a first stationary magnet; the magnetic drive assembly includes: The first moving magnetic conductor is movable relative to the first stationary magnetic conductor; The second moving magnetic conductor is located on the side of the first moving magnetic conductor opposite to the first stationary magnetic conductor, and is movable relative to the first stationary magnetic conductor along the moving direction of the first moving magnetic conductor; and The second stationary magnet is located on the side of the first moving magnet that faces away from the first stationary magnet, and is fixedly disposed relative to the first stationary magnet.

21. The relay according to claim 20, characterized in that, The magnetic drive assembly also includes: A first elastic element is configured to provide an elastic force to the second moving magnet, causing the second moving magnet to tend to move toward the first moving magnet.

22. The relay according to claim 21, characterized in that, The first elastic element is located between the second stationary magnetic body and the second moving magnetic body. One end of the first elastic element abuts against the second moving magnetic body, and the other end abuts against the second stationary magnetic body.

23. The relay according to claim 21, characterized in that, The relay also includes a moving component fixedly connected to the first moving magnetic conductor, the moving component being configured to move relative to the first stationary magnetic conductor in response to an input signal, so as to switch the relay between a first state and a second state; When the relay is in the first state, the first moving magnetic conductor is in contact with the first stationary magnetic conductor, and the first moving magnetic conductor is separated from the second moving magnetic conductor. When the relay is in the second state, the first moving magnetic material is in contact with the second moving magnetic material, and the first moving magnetic material is separated from the first stationary magnetic material. When the relay is in the second state, the first elastic element has a first deformation, and the first deformation is greater than zero.

24. The relay according to claim 23, characterized in that, When the first moving magnetic conductor separates from the second moving magnetic conductor, the first elastic element is in its original length state or has a second deformation due to being squeezed by the second moving magnetic conductor; Wherein, when the first elastic element has the second deformation, the first deformation is greater than the second deformation.

25. The relay according to claim 23, characterized in that, The relay further includes a stop structure configured to stop the second moving magnetic element from moving toward the first stationary magnetic element when the first moving magnetic element is separated from the second moving magnetic element.

26. The relay according to claim 25, characterized in that, The stop structure includes a first stop portion and a second stop portion. The second moving magnetic conductor has the first stop portion, and the second stationary magnetic conductor has the second stop portion. The first stop portion is located on the side of the second stop portion opposite to the first stationary magnetic conductor. The second stop portion is configured to stop the first stop portion from moving toward the first stationary magnetic conductor when the first moving magnetic conductor is separated from the second moving magnetic conductor.

27. The relay according to claim 26, characterized in that, The relay also includes a moving component configured to move relative to the first stationary magnet in response to an input signal, so as to switch the relay between a first state and a second state; When the relay is in the second state, the first moving magnetic material is in contact with the second moving magnetic material, and the first moving magnetic material is separated from the first stationary magnetic material; When the relay is in the second state, there is a gap between the second stop portion and the first stop portion, or the second stop portion is in contact with the first stop portion.

28. The relay according to claim 26, characterized in that, The second stationary magnetic conductor includes a magnetic post and a retaining ring. The magnetic post is located on the side of the first moving magnetic conductor facing away from the first stationary magnetic conductor. The retaining ring is fixedly connected to the end of the magnetic post near the first moving magnetic conductor, and the outer periphery of the retaining ring has a second stop portion. The second moving magnetic conductor has a cylindrical structure and is movably sleeved on at least a portion of the magnetic post.

29. The relay according to claim 28, characterized in that, The outer peripheral side of the magnetic post has a first step and a second step, the first step being closer to the first moving magnetic body than the second step, and the retaining ring being connected to the first step; The first stop is located between the second stop and the tread of the second step.

30. The relay according to claim 29, characterized in that, The relay further includes a first elastic element configured to provide an elastic force to the second moving magnetic conductor, so that the second moving magnetic conductor has the ability to move toward the first moving magnetic conductor. One end of the first elastic member abuts against the tread surface of the second step, and the other end abuts against the first stop portion.

31. The relay according to claim 20, characterized in that, The magnetic drive assembly further includes a metal shell, which is connected to the surface of the first stationary magnetic conductor facing the first moving magnetic conductor. The metal shell has a second through hole, and the second stationary magnetic conductor is fixedly connected to the metal shell and seals the second through hole. The first moving magnetic conductor and the second moving magnetic conductor are movably located inside the metal shell. The coil frame surrounds the metal shell, and the magnetic holding assembly is located around the metal shell.

32. The relay according to any one of claims 1-17, characterized in that, The relay also includes a moving component, which includes a push rod member connected to the magnetic drive component. The moving component is configured to move relative to the coil frame in response to an input signal, thereby switching the relay between a first state and a second state. One of the first state and the second state is that the relay is in a closed state, and the other of the first state and the second state is that the relay is in an open state; Alternatively, one of the first state and the second state may be in parallel with the external circuit controlled by the relay, and the other of the first state and the second state may be in series with the external circuit controlled by the relay.

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