Relay and electricity meter

Abstract

The invention relates to a relay and an electric meter. The relay comprises a contact system, wherein the contact system comprises a movable contact unit and a static contact unit; a pushing system; the connecting structure is connected with the pushing system and the moving contact unit, and the connecting position of the connecting structure and the pushing system is located on the side, away from the static contact unit, of the moving contact unit. According to the application, the pushing system is connected with the moving contact unit through the connecting structure, and the connecting position of the connecting structure and the pushing system is located on the side, away from the static contact unit, of the moving contact unit, so that when the moving contact and the static contact are closed to generate an arc, the moving contact unit can block the arc to prevent ablation of the pushing system; and the overall reliability and service life of the relay are effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic control devices, and in particular to relays and electric meters. Background Art

[0002] With the development of science and technology, the types of industrial and household appliances are increasing, the operating conditions are becoming more complex, and the requirements for power supply and electronic control devices are gradually increasing. Relays are a common electronic control device. In order to meet the needs of different operating conditions, it is necessary to design a larger contact gap and a smaller contact resistance.

[0003] Since both ends of the moving contact unit in a common bridge relay have contacts, the overall contact resistance is relatively large. Therefore, the bridge relay is changed to a non-bridge structure to reduce the contact resistance and meet the large contact gap requirement.

[0004] However, the bell-mouth problem between the contacts of non-bridge-structured relays is more serious, the arc splash range is uncontrollable, and it is easy to burn the driving system connected to the moving contact unit, which is not conducive to safety of use. Summary of the invention

[0005] Based on this, it is necessary to provide a propulsion system, a relay and an electric meter to address the problem that the arc splash range of non-bridge structure output devices is uncontrollable and easily burns the propulsion system connected to the moving contact unit.

[0006] The present application provides a relay, comprising: a contact system, the contact system comprising a moving contact unit and a stationary contact unit; a driving system; a connecting structure, connecting the driving system and the moving contact unit, the connection position between the connecting structure and the driving system is located on the side of the moving contact unit away from the stationary contact unit.

[0007] According to one embodiment of the present application, one end of the moving contact unit is fixed in position relative to the stationary contact unit, and the other end is suitable for approaching or moving away from the stationary contact unit under the drive of the propulsion system.

[0008] According to one embodiment of the present application, the connection position between the connection structure and the moving contact unit is located at the movable end of the moving contact unit; or, the connection position between the connection structure and the moving contact unit is located in the middle or near the middle of the moving contact unit.

[0009] According to one embodiment of the present application, a connection position between the connection structure and the moving contact unit is located on a side of the moving contact unit facing away from the stationary contact unit.

[0010] According to one embodiment of the present application, the pushing system includes a pushing card, and the connecting structure includes: a hanging assembly, connecting the pushing card and the moving contact unit, and configured to allow the pushing card and the moving contact unit to rotate and move relative to each other within a preset range; a compression spring, located between the pushing card and the moving contact unit.

[0011] According to one embodiment of the present application, the hanging assembly includes: a first connecting member, which is fixedly connected to the moving contact unit; a second connecting member, which is fixedly connected to the pushing card, and the second connecting member can be movably hung and cooperated with the first connecting member, and the second connecting member is suitable for relative rotation or movement with the first connecting member within the preset range.

[0012] According to one embodiment of the present application, one of the first connecting member and the second connecting member has a hanging hole, and the other of the first connecting member and the second connecting member can be movably inserted into the hanging hole.

[0013] According to one embodiment of the present application, the first connecting member includes: an ear portion, which is fixedly connected to the moving contact unit, and the hanging hole is arranged on the ear portion; the second connecting member includes a connecting shaft, and the connecting shaft and the hanging hole can be movably plugged into and matched.

[0014] According to one embodiment of the present application, the dynamic contact unit includes a dynamic spring; the ear is formed by bending the dynamic spring as a whole, or the first connecting member also includes a fixing portion, the fixing portion is fixedly connected to the dynamic spring, and the ear is fixedly connected to the fixing portion.

[0015] According to one embodiment of the present application, in the vertical direction of the side wall of the movable spring close to the connecting shaft, the size of the hanging hole is larger than the diameter of the connecting shaft; and / or, in the parallel direction of the side wall of the movable spring close to the connecting shaft, the size of the hanging hole is larger than the diameter of the connecting shaft.

[0016] According to an embodiment of the present application, the push card is provided with a through hole, and the connecting shaft is connected and fixed to the push card through the through hole; or, the connecting shaft is integrally formed with the push card.

[0017] According to one embodiment of the present application, a plurality of first connecting members are provided, and the plurality of first connecting members are respectively fixedly connected to the moving contact unit, and the plurality of first connecting members respectively have the hanging holes, and the second connecting member is respectively movably plugged into and matched with the hanging holes of the plurality of first connecting members.

[0018] According to one embodiment of the present application, the dynamic contact unit includes a dynamic spring, a plurality of the dynamic springs are arranged side by side, and each of the dynamic springs is correspondingly connected to at least one of the first connecting members.

[0019] According to an embodiment of the present application, one end of the compression spring close to the moving contact unit is fixedly connected to the first connecting member.

[0020] According to one embodiment of the present application, the compression spring and the first connecting member are integrally formed.

[0021] The present application also provides an electric meter, comprising the relay of the above embodiment.

[0022] In the above-mentioned relay and electric meter, the driving system is connected to the moving contact unit through a connecting structure, and the connection position between the connecting structure and the driving system is located on the side of the moving contact unit away from the static contact unit. When the moving contact and the static contact are closed to generate an arc, the moving contact unit can block the arc and prevent the driving system from being burned, thereby effectively improving the overall reliability and service life of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the layout structure of the relay in the prior art.

[0024] Figure 2 A schematic diagram of the structure of a relay in a closed state provided in one embodiment of the present application.

[0025] Figure 3 A schematic diagram of the structure of a relay in a disconnected state provided in one embodiment of the present application.

[0026] Figure 4 A schematic diagram of the structure of a relay in a closed state provided in another embodiment of the present application.

[0027] Figure 5 A partial cross-sectional view of a relay in a closed state provided in another embodiment of the present application.

[0028] Figure 6 A schematic structural diagram of a relay in a closed state provided in yet another embodiment of the present application.

[0029] Figure 7 This is one of the schematic diagrams of the coordination relationship between a connection structure and a moving contact unit in a relay provided in one embodiment of the present application.

[0030] Figure 8 The second schematic diagram of the coordination relationship between a connection structure and a moving contact unit in a relay provided in an embodiment of the present application.

[0031] Fig. 9 A schematic diagram of the structure of a moving contact unit in a relay provided in one embodiment of the present application.

[0032] Fig.10A schematic diagram of the matching structure of a mounting portion and a switching shaft in a relay provided in one embodiment of the present application.

[0033] Fig.11 A schematic diagram showing the structure of a mounting portion of a relay provided in one embodiment of the present application.

[0034] Fig.12 A schematic diagram of the matching structure of a mounting portion and a switching shaft in a relay provided in another embodiment of the present application.

[0035] Fig.13 A schematic diagram of the connection structure between a connecting plate and a switching shaft in a relay provided in another embodiment of the present application.

[0036] Fig.14 A schematic diagram of the structure of a relay in a closed state provided in another embodiment of the present application.

[0037] Fig.15 A schematic diagram of the matching structure of a switching shaft and a fixing frame in a relay provided in one embodiment of the present application.

[0038] Fig.16 A schematic diagram of a dynamic spring installation structure in a relay provided in one embodiment of the present application.

[0039] Fig.17 A schematic diagram of the structure of a static conductive magnet in a relay provided in one embodiment of the present application.

[0040] Fig.18 A schematic diagram of the partial structure of a housing in a relay provided in one embodiment of the present application.

[0041] Fig.19 A schematic diagram of the structure of a static conductive magnet in a relay provided in another embodiment of the present application.

[0042] Fig. 20 A schematic diagram of the structure of a static conductive magnet in a relay provided in another embodiment of the present application.

[0043] Fig.21 A schematic diagram of the matching structure of a static conductive magnet and a fixing member in a relay provided in another embodiment of the present application.

[0044] Fig. 22 A partial cross-sectional view of a matching structure between a static conductive magnet and a fixing member in a relay provided in another embodiment of the present application.

[0045] Fig.23 This is one of the schematic diagrams of the coordination relationship between a connection structure and a moving contact unit in a relay provided in another embodiment of the present application.

[0046] Fig.24The second schematic diagram of the coordination relationship between a connection structure and a moving contact unit in a relay provided in another embodiment of the present application.

[0047] Fig.25 A schematic diagram of the coordination relationship between a connection structure and a moving contact unit in a relay provided in another embodiment of the present application.

[0048] Fig.26 A schematic diagram of a connection structure in a relay provided in another embodiment of the present application.

[0049] Fig. 27 This is one of the schematic diagrams of a connection structure in a relay provided in another embodiment of the present application.

[0050] Fig.28 The second schematic diagram of a connection structure in a relay provided in another embodiment of the present application.

[0051] Fig.29 A schematic diagram of the connection relationship between a first connecting member and a moving spring in a relay provided in yet another embodiment of the present application.

[0052] Fig.30 A schematic diagram of the connection relationship between a push card and a connecting shaft in a relay provided in one embodiment of the present application.

[0053] Fig.31 A schematic diagram of an arc extinguishing grid structure in a relay provided in one embodiment of the present application.

[0054] Fig.32 A schematic diagram of an arc discharge hole structure in a relay provided in one embodiment of the present application.

[0055] Fig.33 This is one of the structural schematic diagrams of an electric meter provided in one embodiment of the present application.

[0056] Fig.34 This is one of the structural schematic diagrams of an electric meter provided in one embodiment of the present application.

[0057] Reference numerals:

[0058] 10. Relay; 20. Electric meter; 21. Inner cavity; 22. Terminal block; 23. Wiring port; 24. Lead terminal;

[0059] 100, housing; 110, first housing; 120, second housing; 121, first protrusion; 122, second protrusion; 123, slot; 130, arc hole; 131, first through hole; 132, second through hole; 140, second limiting hole; 150, plug-in slot;

[0060] 200, pushing system; 201, coil; 210, armature assembly; 220, pushing card; 221, through hole; 222, shaft hole; 223, hanging shaft; 230, connecting structure; 231, first connecting member; 2311, fixing part; 2312, ear; 2313, hanging hole; 232, second connecting member; 233, compression spring; 234, pull rod; 2341, hook; 2342, pressure plate; 2343, first pressing part; 2344, second pressing part; 240, rotating member;

[0061] 300, contact system; 310, static contact unit; 311, static spring; 312, static contact; 313, static magnet; 3131, first magnet; 3132, second magnet; 3133, interruption hole; 3134, first extension; 3135, second extension; 3136, fixing piece; 3137, hidden groove; 320, dynamic contact unit; 321, dynamic spring; 3211, first straight portion; 3212, arc portion; 3213, extension portion; 3214, second straight portion; 322, dynamic contact; 323, dynamic magnet; 324, connecting portion; 325, transfer shaft; 326, connecting plate; 327, flexible connecting line; 328, mounting portion; 329, through-shaft hole;

[0062] 400, terminal group; 410, first terminal; 420, second terminal;

[0063] 500, arc extinguishing grid; 510, mounting plate; 511, hollow hole; 520, grid piece; 530, arc striking structure;

[0064] 600, fixing frame; 610, plug-in portion. DETAILED DESCRIPTION

[0065] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0066] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0067] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0068] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0069] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0070] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0071] See also Figure 1 , Figure 1 The figure shows a schematic diagram of the structure of a relay 10 in the prior art. In order to provide a larger contact gap, the conventional relay 10 usually adopts a layout in which the armature assembly 210, the rotating member 240 and the contact system 300 are arranged in sequence in the same direction. This layout will result in a larger size in the arrangement direction and a larger assembly space. It is difficult to use this relay 10 without adjusting the layout or structure of other devices inside the electric meter 20 or other electrical appliances. Therefore, a relay 10 structure with a more reasonable layout, less assembly space and better applicability is needed. In view of this, the present application provides a relay 10.

[0072] Combination Figure 2 and Figure 3 The relay 10 in one embodiment of the present application includes a driving system 200 , a contact system 300 and a terminal group 400 .

[0073] The propulsion system 200 includes a coil 201, and the axial direction of the coil 201 is along the third direction Y. The contact system 300 is located on the third direction Y side of the propulsion system 200, and the contact system 300 includes a moving contact unit 320 and a stationary contact unit 310 arranged along the third direction Y. The moving contact unit 320 is connected to the propulsion system 200, and one end of the moving contact unit 320 is fixed relative to the stationary contact unit 310, and the other end is suitable for approaching or moving away from the stationary contact unit 310 under the drive of the propulsion system 200. After the coil 201 is energized, the propulsion system 200 can drive the moving contact unit 320 to swing with one end of the moving contact unit 320 as the rotation center to achieve the closing and opening functions. The above-mentioned fixing of one end of the moving contact unit 320 relative to the stationary contact unit 310 means that there is no relative movement between one end of the moving contact unit 320 and the stationary contact unit 310.

[0074] The terminal group 400 is located on the side of the contact system 300 away from the driving system 200, connects the static contact unit 310 and the moving contact unit 320, and extends along the third direction Y. The terminal group 400 can connect the contacts inside the relay 10 with the external circuit through a suitable interface and connection method to achieve the on-off control of the current. In the control circuit, the terminal group 400 can also transmit control signals to achieve remote or automatic control of the action of the relay 10.

[0075] In this embodiment, by redesigning the arrangement of the driving system 200, the contact system 300 and the terminal group 400, the overall layout of the relay 10 is made more compact and reasonable, and the occupied space is effectively reduced.

[0076] In some embodiments, the relay 10 further includes an armature assembly 210 , which is located on one side of the coil 201 in the first direction X, with the rotation axis of the armature assembly 210 along the second direction Z, and the contact system 300 is located on the third direction side of the armature assembly 210 .

[0077] The first direction X, the second direction Z and the third direction Y are perpendicular to each other.

[0078] Compared with the conventional relay 10, the relay 10 in this embodiment avoids the problem of oversize caused by sequential arrangement in a single direction through a reasonable layout in three-dimensional space, so that the assembly space requirement is significantly reduced. Due to the optimization of layout and structure, the compact structure of the relay 10 is achieved. The relay 10 in this embodiment can more easily adapt to the layout requirements inside electrical appliances such as the electric meter 20, without the need for additional layout or structural adjustments to other devices, thereby improving the flexibility and convenience of installation and improving the overall performance and reliability.

[0079] In addition, the swing arc length of the swing arm end of the armature assembly 210 directly affects the size of the contact gap. When the arrangement of this embodiment is adopted, the component of the moving path of the swing arm end of the armature assembly 210 along the third direction Y is relatively large, which can make the movable end of the movable contact unit 320 move more than the static contact unit 310, thereby meeting the demand for a large contact gap. In addition, the component of the moving path of the swing arm end of the armature assembly 210 along the first direction X is relatively small, that is, the component in the direction perpendicular to the clapping direction of the movable contact unit 320 and the static contact unit 310 is relatively small, and the structure of the swing arm of the armature assembly 210 and the movable contact unit 320 connected to each other has relatively small movement in the direction perpendicular to the clapping direction of the movable contact unit 320 and the static contact unit 310, so that the operation of the relay 10 is more stable.

[0080] In addition, the non-bridge type moving contact unit 320 design can meet the use requirements of a large contact gap on the one hand, and on the other hand, only the contact connection method is required at the matching position of the moving contact unit 320 and the static contact unit 310, and the line connection method can be used at other positions. Compared with the bridge type moving contact unit 320 design, it has fewer contacts and therefore has a smaller resistance value, which can better meet the current standard requirements for resistance values.

[0081] In some embodiments, the relay 10 further includes a housing 100, the housing 100 has an installation cavity, the driving system 200 and the contact system 300 are located in the installation cavity, and the first terminal 410 and the second terminal 420 extend from the installation cavity to the outside of the housing 100. The housing 100 can prevent dust, moisture and other pollutants from entering the interior of the relay 10, thereby protecting the key components such as the driving system 200 and the contact system 300 inside from damage. The relay 10 generates a certain amount of heat when working, ensuring that the operating temperature of the relay 10 remains within a reasonable range.

[0082] In some embodiments, the terminal group 400 includes a first terminal 410 and a second terminal 420 extending along a third direction Y, the width directions of the first terminal 410 and the second terminal 420 are both along the second direction Z, and the thickness directions of the first terminal 410 and the second terminal 420 are both along the first direction X, wherein the first terminal 410 is connected to the static contact unit 310, and the second terminal 420 is connected to the moving contact unit 320.

[0083] Furthermore, the relay 10 further includes a plurality of pins, the pins extending along the second direction Z, and one end of the pins being fixedly connected to one side of the first terminal 410 or the second terminal 420 in the width direction.

[0084] In some other embodiments, the width direction of the first terminal 410 and the second terminal 420 may also be other directions. For example, the width direction of the first terminal 410 and / or the second terminal 420 is along the second direction Z, etc.

[0085] In this embodiment, the first terminal 410 and the second terminal 420 are both extended along the third direction Y, and are led out along the contact snapping direction (i.e., the third direction Y) toward the side away from the contact system 300, which can be easily connected to the external terminal block connection port without twisting, with less copper loss and easy processing. The width direction of the first terminal 410 and the second terminal 420 are both along the second direction Z, so as to facilitate the direct processing of the pins in the second direction Z, and then facilitate direct plug-in matching with the bottom PCB board without bending the pins.

[0086] Combination Figure 6When the relay 10 of this embodiment is installed in an electrical appliance such as an electric meter 20, it can also be bent according to the connection port 23 of the electrical appliance. For example, as shown in the figure, the part of the second terminal 420 located outside the housing 100 is bent 90°.

[0087] Combination Figure 4 and Figure 5 In some embodiments, the dynamic contact unit 320 includes a dynamic spring 321. For ease of description, the two ends of the dynamic spring 321 are defined as a first end and a second end. In this embodiment, the first end of the dynamic spring 321 is adapted to approach or move away from the static contact unit 310 under the drive of the propulsion system 200, and the second end of the dynamic spring 321 is fixed relative to the static contact unit 310.

[0088] Further, the moving contact unit 320 further includes a moving contact 322, which is fixedly arranged on a side of the moving spring 321 close to the stationary contact unit 310, and the fixed position of the moving contact 322 on the moving spring 321 is located at a position close to the end of the moving spring 321 in the first direction X (i.e., close to the first end). The stationary contact unit 310 includes a stationary spring 311 and a stationary contact 312, and the stationary contact 312 is located on a side of the stationary spring 311 close to the moving spring 321. The stationary spring 311 is arranged at an angle and fixedly connected to the first terminal 410.

[0089] When the first end of the movable spring 321 approaches the static contact unit 310 until the movable contact 322 contacts the static contact 312, conduction occurs between the movable contact unit 320 and the static contact unit 310; when the first end of the movable spring 321 moves away from the static contact unit 310 until the movable contact 322 separates from the static contact 312, conduction occurs between the movable contact unit 320 and the static contact unit 310.

[0090] In some embodiments, the dynamic contact unit 320 also includes a connecting portion 324, which is arranged at an angle and fixedly connected to the second terminal 420, and the second end of the dynamic spring 321 is electrically connected to the connecting portion 324, for example, the dynamic spring 321 and the connecting portion 324 are indirectly connected through a flexible wiring harness, or the dynamic spring 321 and the connecting portion 324 are directly fixedly or movably connected. When the dynamic spring 321 and the connecting portion 324 are indirectly connected through a flexible wiring harness, the dynamic spring 321 and the connecting portion 324 can be connected through a single or multiple wiring harnesses, which are not specifically limited here. For example, when the dynamic spring 321 and the connecting portion 324 are connected through a single wiring harness, a wiring harness with a larger cross-sectional size can be used for connection, and when the dynamic spring 321 and the connecting portion 324 are connected through multiple wiring harnesses, a wiring harness with a smaller cross-sectional size can be used for connection.

[0091] In this embodiment, the extension direction and width direction of the connection portion 324 are not specifically limited. For example, the connection portion 324 extends along the first direction X, and the width direction of the connection portion 324 is along the second direction Z, or the extension direction of the connection portion 324 intersects the first direction X, and the width direction of the connection portion 324 is along the third direction Z. In addition, the plane where the connection portion 324 is located and the plane where the movable spring 321 is located can be coplanar or skew.

[0092] Optionally, the angle between the static spring 311 and the first terminal 410 and the angle between the connecting portion 324 and the second terminal 420 are 90°, or close to 90° (for example, the angle is 85° to 95°). Thus, it is easy to realize the spatial layout of the static contact unit 310, the dynamic contact unit 320 and the terminal group 400 arranged along the third direction Y. In addition, the angle between the static spring 311 and the first terminal 410 and the angle between the connecting portion 324 and the second terminal 420 can also be adaptively set according to the swinging motion trajectory of the dynamic spring 321, which is conducive to the relative parallelism of the surfaces of the dynamic contact 322 and the static contact 312 when they are in contact and closed.

[0093] Optionally, when the moving contact 322 is in contact with the static contact 312, the static spring 311 is parallel to the moving spring 321. For example, when the moving contact 322 is in contact with the static contact 312, the static spring 311 and the moving spring 321 form an equal angle with the first direction X.

[0094] Thereby, the static spring 311 can better cooperate with the snapping amplitude of the dynamic spring 321 .

[0095] Optionally, the static spring 311 and the first terminal 410 are integrally bent and formed, and / or the connecting portion 324 and the second terminal 420 are integrally bent and formed. By integrating the static spring 311 and the first terminal 410 into an integral component, and / or integrating the connecting portion 324 and the second terminal 420 into an integral component, the manufacturing process can be simplified, and the difficulty and cost of production and assembly can be reduced. In addition, compared with welding, the integral molding method has lower resistance and higher structural strength, so it can effectively improve the performance of the product.

[0096] In order to meet the requirement of a larger contact gap (greater than or equal to 5.5 mm), the present embodiment further improves the structure of the moving contact unit 320 . Two optional forms of the moving contact unit 320 are exemplarily introduced below.

[0097] Combination Figure 4 and Figure 7As one of the optional forms, the movable spring 321 includes a bending portion and a straight portion, at least a portion of the bending portion is arc-shaped, the straight portion extends in a straight line, and one end of the straight portion is fixedly connected to one end of the bending portion. At least a portion of the bending portion is arc-shaped, which means that on the extension path of the bending portion, at least a portion of the path is arc-shaped, for example, the extension path of the bending portion is arc-shaped as a whole, or a portion of the extension path of the bending portion is arc-shaped, and the other portion is linear, and the extension path of the bending portion is not limited to only including a section of the arc-shaped portion, for example, the extension path of the bending portion includes more than two arc-shaped portions, and the arc-shaped portions are connected by a linear path, or the arc-shaped portions are directly connected, etc.

[0098] In some embodiments, the straight portion includes a first straight portion 3211, which is fixedly connected to the end of the bent portion, and one end of the first straight portion 3211 away from the bent portion constitutes the first end of the dynamic spring 321; and / or, the straight portion includes a second straight portion 3214, which is fixedly connected to the end of the bent portion, and one end of the second straight portion 3214 away from the bent portion constitutes the second end of the dynamic spring 321.

[0099] Preferably, the movable spring 321 includes a first straight portion 3211, a bent portion, and a second straight portion 3214 connected in sequence. The movable contact 322 is located on the side of the first straight portion 3211 close to the static spring 311, and the second straight portion 3214 is fixed relative to the static contact unit 310. The first straight portion 3211 and the second straight portion 3214 extend in a straight line, and the extension direction of the first straight portion 3211 and the extension direction of the second straight portion 3214 can be parallel or intersecting. Preferably, the extension direction of the first straight portion 3211 and the extension direction of the second straight portion 3214 are parallel. The position of the second straight portion 3214 is fixed. Specifically, the second straight portion 3214 is fixedly connected to the connecting portion 324 and / or the housing 100. Preferably, the second straight portion 3214 is fitted with the connecting portion 324 and fixed by rivets. To facilitate the connection between the second straight portion 3214 and the connecting portion 324, the connecting portion 324 may be arranged at an angle or a section parallel to the second straight portion 3214 may be provided on the connecting portion 324.

[0100] In this embodiment, the movable spring 321 relies on its own deformation to achieve the function of fixing one end relative to the static contact unit 310, and the other end is driven by the pushing system 200 to move closer to or away from the static contact unit 310. It can be understood that in this installation structure of the movable spring 321, the greater the swing amplitude of the movable spring 321, the greater the reaction force generated by the movable spring 321, and the large reaction force will affect the matching of the suction and reaction force. Therefore, it is not easy to meet the large contact gap requirements. To solve this problem, the movable spring 321 of the embodiment of the present application is provided with a bending portion, which can make the deformation of the movable spring 321 mainly concentrated at the bending portion, which is conducive to increasing the deformable amount of the movable spring 321 and reducing the reaction force.

[0101] In some embodiments, the bending portion includes an arc portion 3212 and an extension portion 3213. The extension path of the arc portion 3212 is arc-shaped, and one end of the arc portion 3212 is connected to the extension portion 3213. The extension portion 3213 extends in a straight line, and the extension path of the extension portion 3213 is tangent to the extension path of the arc portion 3212. The end of the extension portion 3213 away from the arc portion 3212 can be provided with a moving contact 322, or connected to one of the first straight portion 3211, the second straight portion 3214 or the connecting portion 324. Preferably, the end of the arc portion 3212 away from the extension portion 3213 is connected to the first straight portion 3211, the end of the extension portion 3213 away from the arc portion 3212 is connected to the second straight portion 3214, and the second straight portion 3214 is connected to the connecting portion 324.

[0102] In this embodiment, the arc portion 3212 serves as the main deformation position of the movable spring 321. By connecting the extension portion 3213 at one end of the arc portion 3212, on the one hand, the plane where the first straight portion 3211 is located and the plane where the second straight portion 3214 is located can be skewed, thereby facilitating the installation of the movable spring 321, and on the other hand, the force arm of the force acting on the arc portion 3212 by the first straight portion 3211 and the second straight portion 3214 can be increased, so that the arc portion 3212 is easier to bend, thereby reducing the reaction force generated when the movable spring 321 is bent.

[0103] In some embodiments, the dynamic spring 321 includes a plurality of stacked sub-springs, and gaps are formed between adjacent sub-springs at least in the arc-shaped portion 3212. Under the condition of the same cross-sectional thickness, the dynamic spring 321 formed by the combination of a plurality of stacked sub-springs has better flexibility, is easier to swing, and has a smaller reaction force than the integrally formed dynamic spring 321. By providing a gap in the arc-shaped portion 3212, a deformation space can be provided for the sub-springs, thereby preventing the sub-springs in the bent portion from interfering with each other, forming a greater rigidity, and causing jamming.

[0104] Optionally, the multiple sub-springs of the movable spring 321 are riveted and fixed to each other. Further, one end of the multiple sub-springs is riveted together with the movable contact 322 , and the other end of the multiple sub-springs is riveted together with the connecting portion 324 .

[0105] Combination Figure 2 and Figure 3 As another optional form, the dynamic contact unit 320 further includes a transfer shaft 325, the transfer shaft 325 is fixed relative to the static contact unit 310, the dynamic spring 321 is connected to the driving system, and one end of the dynamic spring 321 is connected to the transfer shaft 325, one end of the dynamic spring 321 connected to the transfer shaft 325 is fixed relative to the static contact unit 310, and the other end is suitable for approaching or moving away from the static contact unit 310 under the drive of the driving system 200;

[0106] The distance between the moving contact 322 and the static contact 312 can be changed by rotating and changing the angle of the moving spring 321. During this process, the moving spring 321 does not need to be deformed or only produces a small amount of deformation. Therefore, the maximum contact gap that can be formed between the moving contact 322 and the static contact 312 is not affected by the material and structure of the moving spring 321 itself, which is conducive to meeting the large contact gap requirement.

[0107] Combination Fig. 9 and Fig.15 In some embodiments, the adapter shaft 325 is connected to the housing 100 . One end of the movable spring 321 of the movable contact unit 320 away from the movable contact point 322 is rotatably connected to the housing 100 through the adapter shaft 325 .

[0108] It is worth noting that the above-mentioned rotational connection with the housing 100 through the adapter shaft 325 can be that the adapter shaft 325 and the housing 100 are relatively fixed, and the end of the movable spring 321 away from the movable contact 322 is rotationally connected to the adapter shaft 325, or the end of the movable spring 321 away from the movable contact 322 is fixedly connected to the adapter shaft 325, and the adapter shaft 325 is rotationally connected to the housing 100. In addition, the movable spring 321 and the adapter shaft 325 and the adapter shaft 325 and the housing 100 can be directly connected or indirectly connected.

[0109] In some embodiments, a plurality of movable springs 321 are provided, and the plurality of movable springs 321 are arranged along the second direction Z. The plurality of movable springs 321 are respectively provided with movable contacts 322 and are respectively connected to the propulsion system 200. The plurality of movable springs 321 can rotate under the drive of the propulsion system 200, so that the movable contacts 322 are close to or away from the static contacts 312. Accordingly, a plurality of static springs 311 are provided, and the plurality of static springs 311 are respectively provided with static contacts 312. There is a one-to-one correspondence between the plurality of static springs 311 and the plurality of movable springs 321, and between the plurality of movable contacts 322 and the plurality of static contacts 312. By providing a plurality of movable springs 321 and a plurality of movable contacts 322 corresponding to the plurality of movable springs 321, a plurality of static springs 311 and a plurality of static contacts 312, it is beneficial to increase the overall current conduction area, thereby reducing resistance and reducing power loss.

[0110] Combination Fig. 9In some embodiments, the dynamic contact unit 320 further includes a connecting plate 326, a plurality of dynamic springs 321 are provided, the plurality of dynamic springs 321 are arranged along the second direction Z, and are respectively connected to the propulsion system 200, the connecting plate 326 is respectively fitted and fixed to the side walls of the plurality of dynamic springs 321, and the side wall where the dynamic spring 321 is connected to the connecting plate 326 is located on one side of the dynamic spring 321 in the radial direction of the adapter shaft 325. When the extension directions of the plurality of dynamic springs 321 are parallel, the side walls where the plurality of dynamic springs 321 are connected to the connecting plate 326 are coplanar. For example, the connecting plate 326 is respectively fitted and fixed to one side of the plurality of dynamic springs 321 close to the static contact unit 310, or the connecting plate 326 is respectively fitted and fixed to one side of the plurality of dynamic springs 321 away from the static contact unit 310.

[0111] The connecting plate 326 can connect the plurality of movable springs 321 into a whole, which facilitates installation of the plurality of movable springs 321 and enables the plurality of movable springs 321 to rotate together in a direction close to or away from the stationary contact unit 310 .

[0112] It is understandable that during the long-term use of the relay 10, the moving contact 322 or the static contact 312 is prone to ablation, resulting in the vertices of multiple moving contacts 322 not being in the same plane or the vertices of multiple static contacts 312 not being in the same plane, which can easily lead to some moving contacts 322 being unable to contact or being in virtual contact with their corresponding static contacts 312. The connecting plate 326 can produce a certain deformation, and the multiple moving springs 321 are respectively connected to the driving system 200. Therefore, although the multiple moving springs 321 rotate together in the direction of approaching or moving away from the static contact unit 310 under the drive of the driving system 200, a certain angle deviation can be generated to ensure that the moving contacts 322 on the multiple moving springs 321 can all be in contact with the corresponding static contacts 312.

[0113] Optionally, the connecting plate 326 includes a first plate body and a second plate body, wherein the plurality of first plates are fixedly connected to the plurality of dynamic springs 321 in a one-to-one correspondence through a connection method such as riveting, the second plate body is opposite to the gap between adjacent dynamic springs 321, the second plate body connects adjacent first plates, and the width of the second plate body is smaller than the width of the first plate body. Since the width of the second plate body is smaller than the width of the first plate body, the connecting plate 326 is easy to generate torsional deformation at the second plate body position, meeting the demand for differentiated swing angles of the plurality of dynamic springs 321.

[0114] Optionally, the connection position between the connecting plate 326 and the movable spring 321 is located at the end of the movable spring 321 away from the moving contact 322. Therefore, when the connecting plate 326 is slightly deformed, a larger position difference can be generated between the moving contacts 322. Based on this, on the premise that the moving contacts 322 on multiple movable springs 321 can all be in contact and conductive with the corresponding static contacts 312, the deformation of the connecting plate 326 can be reduced, making it easier to achieve position differentiation of the moving contacts 322 and reducing damage to the connecting plate 326.

[0115] In some embodiments, the dynamic spring 321 and the transfer shaft 325 are formed separately and fixedly connected, or formed integrally.

[0116] When the movable spring 321 and the adapter shaft 325 can be formed separately, optionally, the movable spring 321 is provided with a mounting hole, the mounting hole penetrates the movable spring 321 along the second direction Z, and the adapter shaft 325 is passed through the mounting hole.

[0117] Combination Fig. 9 As a setting form of the adapter shaft 325, the adapter shaft 325 includes multiple shaft segments, the multiple shaft segments are arranged in sequence along the axial direction, and the multiple shaft segments are connected to the multiple dynamic springs 321 one by one, and at least part of the shaft segments are rotatably connected to the housing 100.

[0118] As another configuration form of the transfer shaft 325 , one transfer shaft 325 is provided, and the transfer shaft 325 is connected to a plurality of movable springs 321 at the same time.

[0119] It is understandable that when the adapter shaft 325 is connected to multiple dynamic springs 321 at the same time, and there is an angle difference between the multiple dynamic springs 321 connected to the adapter shaft 325, the position of the adapter shaft 325 also needs to meet the requirements of the angle differentiation of the dynamic springs 321, for example, the adapter shaft 325 itself is deformed, or the adapter shaft 325 and the dynamic spring 321 are relatively rotated. When the adapter shaft 325 includes multiple shaft segments, and the multiple shaft segments are connected to the multiple dynamic springs 321 in a one-to-one correspondence, the multiple shaft segments can have axial misalignment, which will not be affected by the angle difference between the dynamic springs 321.

[0120] Combination Fig.10 and Fig.12 In some embodiments of the present application, the dynamic spring 321 is connected to the transfer shaft 325 via a connecting plate 326 .

[0121] Exemplarily, the connecting plate 326 is provided with at least one mounting portion 328 , the mounting portion 328 has an axle-through hole 329 , and the adapter shaft 325 is passed through the axle-through hole 329 .

[0122] Preferably, the connecting plate 326 is provided with more than two mounting portions 328 , and the mounting portions 328 are arranged in sequence along the second direction Z, the axial direction of the through-axis hole 329 is along the second direction Z, and the adapter shaft 325 is simultaneously connected and matched with more than two mounting portions 328 .

[0123] Optionally, the adapter shaft 325 is provided with a positioning ring, which protrudes from the side wall of the adapter shaft 325. The positioning ring contacts and cooperates with the end of the mounting portion 328 to form an axial limit for the adapter shaft 325, making the installation of the adapter shaft 325 more convenient, and the installation position is accurate, and the rotation stability can be improved.

[0124] Optionally, the mounting portion 328 and the connecting plate 326 are formed integrally.

[0125] For example Fig.11 As shown, a first constituent plate is integrally formed on one side of the connecting plate 326 along the first direction X (i.e., one side in the radial direction of the adapter shaft 325 ), or on one side of the connecting plate 326 along the opposite direction of the first direction X, and the first constituent plate is curled to form the mounting portion 328 .

[0126] For example Fig.12 As shown, a second constituent plate is integrally formed on one side of the connecting plate 326 along the second direction X (i.e., one side in the axial direction of the adapter shaft 325) and / or on one side of the connecting plate 326 in the opposite direction of the second direction X (i.e., the other side in the axial direction of the adapter shaft 325), and the second constituent plate is perpendicular to the connecting plate 326 and has an axial hole 329 to form a mounting portion 328.

[0127] When this structure is adopted, the connection plate 326 and the mounting portion 328 can be formed more simply, which is helpful to reduce the difficulty of production and can improve the structural strength of the connection plate 326 and the mounting portion 328.

[0128] Combination Fig.13 and Fig.14 In some embodiments, the transfer shaft 325 is formed by bending one end of the third constituent plate, and the connecting plate 326 is connected to the other end of the third constituent plate, so that the dynamic spring 321 is connected to the transfer shaft 325 through the connecting plate 326. Further, the third constituent plate and the connecting plate 326 are integrally formed.

[0129] Combination Fig.15 and Fig.16 In some embodiments of the present application, the moving contact unit 320 further includes a fixing frame 600, which is connected to the housing 100 and has a first limiting hole. The housing 100 is provided with a second limiting hole 140, which is arranged opposite to the first limiting hole and is coaxial. One end of the transfer shaft 325 is rotatably inserted into the first limiting hole, and the other end of the transfer shaft 325 is rotatably inserted into the second limiting hole 140.

[0130] In this embodiment, the transfer shaft 325 is limited by the cooperation between the first limiting hole on the fixing frame 600 and the transfer shaft 325, and the cooperation between the second limiting hole 140 on the outer shell 100 and the transfer shaft 325, so as to meet the installation requirements of the dynamic spring 321. Compared with the conventional installation method of limiting the transfer shaft 325 only by the outer shell 100, it has the advantages of being easier to produce and assemble, and can form a good limit for the transfer shaft 325 and the dynamic spring 321.

[0131] Optionally, the fixing frame 600 is detachably connected to the housing 100. In this embodiment, the transfer shaft 325 is plugged and matched with the first limiting hole on the fixing frame 600 and the second limiting hole 140 on the housing 100, respectively, and the fixing frame 600 is detachably connected to the housing 100. Therefore, when the fixing frame 600 is connected to the housing 100, the housing 100 and the fixing frame 600 can be used to form axial limits on the transfer shaft 325 in opposite directions, respectively, to maintain the stability of the position of the transfer shaft 325. When the fixing frame 600 is removed from the housing 100, the transfer shaft 325 can be pulled out from the second limiting hole 140 on the housing 100, so as to facilitate the replacement and maintenance of the transfer shaft 325 or the movable spring 321.

[0132] Optionally, the first limiting hole is a blind hole, which can block foreign matter and reduce the risk of foreign matter entering the first limiting hole and causing jamming, which affects the life reliability.

[0133] Optionally, when the adapter shaft 325 is formed by bending one end of the third constituent plate, an opening for the third constituent plate to pass through is provided on one side of the first limiting hole and / or the second limiting hole, and the width of the opening is greater than the thickness of the third constituent plate and smaller than the diameter of the adapter shaft 325 to allow the third constituent plate to rotate.

[0134] Combination Fig.16 In some embodiments, the housing 100 is provided with a plug-in slot 150, the extension direction of the plug-in slot 150 is parallel to the extension direction of the second limiting hole 140, the fixing frame 600 is provided with a plug-in portion 610, the extension direction of the plug-in portion 610 is parallel to the extension direction of the first limiting hole, and the plug-in portion 610 is inserted into the plug-in slot 150. In this embodiment, the fixing frame 600 and the housing 100 are connected in a detachable plug-in manner, and the plug-in direction of the fixing frame 600 and the housing 100 is the same as the plug-in direction of the transfer shaft 325. When installing the rotating shaft, the fixing frame 600 is inserted into the housing 100 to allow the transfer shaft 325 to be inserted into the first limiting hole and the second limiting hole 140. Therefore, it has the advantages of more convenient disassembly and assembly and lower production difficulty.

[0135] Optionally, the housing 100 is provided with a plurality of plug-in slots 150, and the fixing frame 600 is provided with a plurality of plug-in parts 610, and the plurality of plug-in slots 150 and the plurality of plug-in parts 610 are plugged and matched one by one. In this embodiment, the connection between the fixing frame 600 and the housing 100 is achieved by the cooperation of the plurality of plug-in parts 610 and the plurality of plug-in slots 150, which can reduce the force on a single plug-in part 610 and prevent the plug-in part 610 from being damaged. It can also form an angle limit for the fixing frame 600 to prevent the fixing frame 600 from being angularly deflected with a single plug-in part 610 as the center, thereby facilitating the position and angle accuracy of the transfer shaft 325.

[0136] In this embodiment, the shapes and sizes of the multiple plug-in parts 610 may be the same or different. Preferably, the shapes and / or sizes of some of the multiple plug-in parts 610 are different from those of the other plug-in parts 610. This can prevent mistakes and make assembly more convenient and accurate.

[0137] Of course, in some embodiments, the fixing frame 600 may not be provided, and two opposite side walls of the housing 100 are respectively provided with limiting holes, and both ends of the adapter shaft 325 are respectively rotatably installed in the corresponding limiting holes.

[0138] In some embodiments, the moving contact unit 320 further includes a flexible connecting line 327 (see Fig.24 ), the flexible connecting line 327 is arranged in parallel with at least a partial section of the dynamic spring 321.

[0139] For example, one end of the flexible connection line 327 is connected to the connection portion 324 or the second straight portion 3214 , and the other end of the flexible connection line 327 is connected to the moving contact 322 or the first straight portion 3211 .

[0140] In this embodiment, the flexible connecting wire 327 is in parallel with a partial section or the entirety of the movable spring 321. By providing the flexible connecting wire 327, the requirement for the cross-sectional area of ​​the movable spring 321 can be reduced, so that a thinner movable spring 321 can be used, making the movable spring 321 easier to bend and having a smaller reaction force. Of course, when the movable spring 321 adopts a structural form in which one end is rotatably connected to the housing 100, the flexible connecting wire 327 can also be provided. For example, one end of the flexible connecting wire 327 is connected to the movable contact 322, and the other end is connected to the connecting portion 324.

[0141] In order to prevent the flexible connecting line 327 from being torn off when the movable spring 321 is deformed, the flexible connecting line 327 of the present embodiment may adopt a length redundant structure design.

[0142] Combination Figure 4In some embodiments of the present disclosure, the static contact unit 310 also includes a static conductive magnet 313, and the dynamic contact unit 320 also includes a dynamic conductive magnet 323. The dynamic conductive magnet 323 is separately formed and fixedly connected to the dynamic spring 321, and is opposite to the static conductive magnet 313.

[0143] The static magnet 313 is generally a material that can guide and gather magnetic field lines, and can be a magnetic material such as iron, nickel, cobalt or an alloy thereof, or other materials with high magnetic permeability.

[0144] The interaction between the moving magnet 323 and the static magnet 313 is the key to realize the switch action. When the control current passes through the coil 201 of the driving system 200, a magnetic field is generated. This magnetic field acts on the armature assembly 210, thereby driving the moving spring 321 close to the static spring 311 and making the moving contact 322 contact the static contact 312. At this time, the current is conducted on the moving spring 321, and a circular magnetic field is generated around the moving spring 321. This magnetic field acts on the moving magnet 323 and the static magnet 313, causing the moving magnet 323 and the static magnet 313 to attract each other, thereby exerting a force on the moving spring 321 tending to approach the static spring 311, which is conducive to promoting The moving contact 322 and the static contact 312 are brought into contact and closed; after the moving contact 322 and the static contact 312 are brought into contact and closed, the working current passes through the moving spring 321, generating a magnetic field at the position of the moving spring 321, and the magnetic field also acts on the moving magnet 323 and the static magnet 313, so that the moving magnet 323 and the static magnet 313 attract each other, thereby increasing the closing holding force for the moving contact 322 and the static contact 312, and even if the coil 201 of the propulsion system 200 is powered off, the moving contact 322 and the static contact 312 can still be kept in a stable state of contact and closure.

[0145] In addition, the moving contact 322 and the static contact 312 have an initial contact point when they first come into contact. When a short circuit fault occurs, the magnetic attraction between the moving magnet 323 and the static magnet 313 increases, which can cause the moving spring 321 to increase its deformation. At this time, the moving contact 322 can slide relative to the static contact 312, changing the contact position of the moving contact 322 and the static contact 312, thereby preventing the moving contact 322 and the static contact 312 from sticking to each other. When a short circuit occurs, the repulsive force between the static contact 312 and the moving contact 322 increases, and the static contact 312 and the moving contact 322 may easily pop open and explode. In this embodiment, when a short circuit occurs, the current of the moving spring 321 increases, and the magnetic field generated is changed accordingly. The magnetic attraction between the moving magnet 323 and the static magnet 313 increases, and the spacing between the moving spring 321 and the static spring 311 can be stably maintained, so that the moving contact 322 and the static contact 312 always maintain a closed contact state. In addition, the deformation of the moving spring 321 is increased, so that the moving contact 322 can slide relative to the static contact 312, and the contact position of the moving contact 322 and the static contact 312 is changed, which plays a role in preventing the moving contact 322 and the static contact 312 from sticking to each other.

[0146] In addition, the moving magnet 323 in this embodiment can contact the moving spring 321, so that when the moving contact 322 and the static contact 312 are closed, current can be conducted in the moving magnet 323 to increase the induced magnetic field and improve the magnetic attraction between the moving magnet 323 and the static magnet 313. Alternatively, an insulating member is provided between the moving magnet 323 and the moving spring 321 to prevent the current in the moving spring 321 from flowing through the moving magnet 323.

[0147] In addition, in this embodiment, the dynamic magnet 323 and the static magnet 313 are used to achieve the anti-short circuit function. Different from the prior art that the anti-short circuit structure is formed by bending the spring body, the production process is simpler and the material cost is lower.

[0148] Combination Fig.17 In some embodiments, a plurality of movable springs 321 are arranged side by side, a plurality of movable magnets 323 are arranged, and the plurality of movable magnets 323 are connected one-to-one with the plurality of movable springs 321. The static magnet 313 includes a plurality of first magnets 3131, which are arranged at intervals along the arrangement direction of the plurality of movable springs 321, and the plurality of first magnets 3131 correspond one-to-one with the plurality of movable magnets 323.

[0149] In this embodiment, each moving magnet 323 is respectively arranged with a first magnet 3131, and an independent short-circuit loop can be formed between the moving magnet 323 and its corresponding first magnet 3131. The interaction between the moving magnet 323 and its corresponding first magnet 3131 can be used to apply a force to the moving spring 321 corresponding to the moving magnet 323 to move closer to the moving spring 321. The moving magnets 323 are respectively arranged on multiple moving springs 321, which can ensure that each moving spring 321 can independently withstand the force of the corresponding moving magnet 323, and maintain stable contact between each moving contact 322 and its corresponding static contact 312 when the relay 10 is closed. In particular, after a portion of the moving contacts 322 or the static contacts 312 are ablated, it can ensure that each moving contact 322 can contact with its corresponding static contact 312.

[0150] In conjunction with the figure, in some embodiments, the static magnet 313 includes a second magnet 3132, and the second magnet 3132 has a break hole 3133, and the break hole 3133 is opposite to the gap between adjacent movable springs 321. In this embodiment, the different parts of the second magnet 3132 separated by the break holes 3133 are not completely disconnected, that is, the different parts of the second magnet 3132 separated by the break holes 3133 are connected to each other. The multiple parts separated by the break holes 3133 can play the same role as the multiple first magnets 3131, which will not be described here.

[0151] In some embodiments, the static magnet 313 includes a first magnet 3131 and a second magnet 3132 . The second magnet 3132 is located on a side of the first magnet 3131 away from the dynamic magnet 323 and is fixedly connected to the plurality of first magnets 3131 .

[0152] Exemplarily, the first magnetic conductor 3131 and the second magnetic conductor 3132 are both rectangular or approximately rectangular plate-shaped structures, and the second magnetic conductor 3132 and the first magnetic conductor 3131 are fixedly connected to each other by, for example, welding or riveting.

[0153] The second magnetizer 3132 can support and fix the first magnetizer 3131, and maintain the relative positions of the plurality of first magnetizers 3131. The second magnetizer 3132 is divided into regions corresponding to the plurality of first magnetizers 3131 by the interruption holes 3133. The different regions divided by the second magnetizer 3132 and the corresponding first magnetizers 3131 work together to improve the magnetic attraction between the static magnetizer 313 and the dynamic magnetizer 323.

[0154] In addition, when the thickness of the static magnet 313 is large, it is not convenient to perform interruption processing. In this embodiment, the first magnet 3131 and the second magnet 3132 can be processed separately, and then the first magnet 3131 and the second magnet 3132 are assembled together. By adopting a structural form in which the first magnet 3131 and the second magnet 3132 are combined with each other, the production difficulty can be reduced.

[0155] Of course, if Fig.19 As shown, the static magnet 313 is not limited to the above structure. In some embodiments, the static magnet 313 can be a whole piece, and when there are multiple dynamic magnets 323, it interacts with multiple dynamic magnets 323 at the same time. The static magnet 313 is formed into multiple magnet structures corresponding to the multiple dynamic magnets 323 by partial interruption or the like.

[0156] In some embodiments, the static magnet 313 is fixedly connected to the housing 100, and the support and fixing function of the housing 100 is used to maintain the stability of the position of the static magnet 313. The fixed connection of the static magnet 313 to the housing 100 also facilitates reducing the magnetic gap between the static magnet 313 and the dynamic magnet 323 when the moving contact 322 and the static contact 312 are closed, thereby achieving a better retention effect.

[0157] Combination Fig.18 In some embodiments, the housing 100 is provided with a first protrusion 121 and a second protrusion 122 that are arranged opposite to each other, and a slot 123 is respectively provided on the side of the first protrusion 121 and the second protrusion 122 that are close to each other, and one end of the static conductive magnet 313 is plugged and matched with the slot 123 of the first protrusion 121, and the other end is plugged and matched with the slot 123 of the second protrusion 122. This embodiment realizes the connection between the static conductive magnet 313 and the housing 100 by plugging, which has the advantages of stable structure and easy assembly. Of course, in some embodiments, the housing 100 can also be provided with a slot 123 with an opening facing the third direction Y and plugged and matched with the corresponding side of the static conductive magnet 313 through the slot 123, so that the installation of the static conductive magnet 313 is more stable.

[0158] Optionally, plug-in structures are respectively provided at both ends of the static conductive magnet 313 , and the plug-in structures are plug-matched with the slots 123 .

[0159] For example Fig.19 As shown, both ends of the static conductive magnet 313 have a first extension portion 3134 , and a stepped plug-in structure is formed at the position of the first extension portion 3134 , and the first extension portion 3134 is plug-fitted with the slot 123 .

[0160] Or, if Fig.17As shown, the length of the second magnet 3132 along the first direction X is greater than the distance between the opposite sides of the second magnets 3132 located at the two ends among the plurality of second magnets 3132, so that the two ends of the second magnet 3132 protrude to form a stepped plug-in structure, one end of the second magnet 3132 is plugged into the slot 123 of the first protrusion 121, and the other end of the second magnet 3132 is plugged into the slot 123 of the second protrusion 122. The structural form of connecting the housing 100 through the second magnet 3132 has the advantages of easy installation and more stable structure.

[0161] Or, if Fig. 20 As shown, the two ends of the static conductive magnet 313 have a second extension portion 3135, and the second extension portion 3135 is a curved plate-like structure formed by extending the two ends of the static conductive magnet 313. The second extension portion 3135 serves as the above-mentioned plug-in structure, and the second extension portion 3135 is plug-fitted with the slot 123.

[0162] Combination Fig.21 and Fig. 22 In other embodiments, the static conductive magnet 313 is fixedly connected to the static spring 311 or the housing 100 via a fixing member 3136. Preferably, the static conductive magnet 313 is fixedly connected to the housing 100 via a fixing member 3136. The fixing member 3136 includes a rivet or a bolt, etc. The fixing member 3136 is interlocked with one of the static spring 311 and the housing 100, and is interlocked with the static conductive magnet 313.

[0163] Optionally, a hidden groove 3137 is provided on one side of the static magnet 313 close to the moving magnet 323, and one end of the fixing member 3136 close to the moving magnet 323 is located in the hidden groove. For example, when the fixing member 3136 is a bolt, one end of the bolt close to the moving magnet 323 and a nut connected with the bolt are both located in the hidden groove, or when the fixing member 3136 is a rivet, one end of the rivet is located in the hidden groove. By providing the hidden groove, it is possible to prevent the fixing member 3136 from limiting the moving magnet 323 or other components such as the moving spring 321.

[0164] In some embodiments, at least one side of the moving magnet 323 is provided with a folded edge, and the folded edge protrudes from the moving magnet 323 toward the direction close to the static magnet 313. Preferably, the moving magnet 323 is provided with folded edges on both sides, and the folded edges on both sides of the moving magnet 323 are respectively placed on both sides of the moving spring 321 connected to the moving magnet 323. By providing the folded edge structure, the magnetic gap can be further reduced and the magnetic attraction can be increased. In addition, the connection between the moving magnet 323 and the moving spring 321 can be made more stable.

[0165] In some embodiments, when the moving contact 322 is in contact with the static contact 312, the side of the static magnet 313 close to the moving magnet 323 and the side of the moving magnet 323 close to the static magnet 313 are parallel to each other, and both form an angle with the first direction X. Thus, it is possible to ensure that the gap formed between the side of the static magnet 313 close to the moving magnet 323 and the side of the moving magnet 323 close to the static magnet 313 is uniform, thereby ensuring that the magnetic attraction between the moving magnet 323 and the static magnet 313 at different positions is uniform, and it is also possible to facilitate the control of the minimum magnetic gap between the moving magnet 323 and the static magnet 313.

[0166] In some embodiments, the relay 10 further includes a connecting structure 230, and the connecting structure 230 is connected to the moving contact unit 320. The pushing system 200 further includes a pushing card 220, and the pushing card 220 is connected to the armature assembly 210 and the connecting structure 230. When the armature assembly 210 rotates, it can drive the pushing card 220 to move, and then drive the moving contact unit 320 to move through the connecting structure 230. In this embodiment, the pushing card 220 can be a rod-shaped or rod-like structure as shown in the figure, or other structural forms can be adopted, which can be flexibly determined according to actual usage. In addition, the connection method between the pushing card 220 and the armature assembly 210 is not limited. For example, one end of the pushing card 220 is ball-jointed to the swing arm of the armature assembly 210, or is fixedly connected to the swing arm of the armature assembly 210.

[0167] The connection between the push card 220 and the moving contact unit 320 is achieved through the connection structure 230, which can meet the requirements of more installation positions and angles, thereby making the spatial layout of the relay 10 more flexible.

[0168] Further, the connection position between the connection structure 230 and the push card 220 is located on the side of the moving contact unit 320 away from the static contact unit 310. It can be understood that at the moment when the moving contact 322 of the moving contact unit 320 and the static contact 312 of the static contact unit 310 are separated or closed, an arc may be generated due to the change of current, and the arc will inevitably cause ablation to the adjacent components. Since the push card 220 needs to be connected (directly or indirectly) to the moving spring 321 of the moving contact unit 320, its end is close to the moving contact 322 and the static contact 312, so it is easy to be damaged by arc ablation. In the present application, the connection position between the connection structure 230 and the push card 220 is located on the side of the moving contact unit 320 away from the static contact unit 310. Therefore, the moving spring 321 can be blocked between the moving contact 322 and the static contact 312 and the push card 220, which can effectively prevent the push card 220 from being ablated, thereby improving the overall reliability and service life of the relay 10.

[0169] Combination Fig.23 and Fig.24As an optional form of the connecting structure 230, the connecting structure 230 includes a hanging assembly and a compression spring 233. The hanging assembly connects the pushing card and the moving contact unit, and is configured to allow the pushing card 220 and the moving contact unit 320 to rotate and move relative to each other within a preset range. The compression spring 233 is located between the pushing card and the moving contact unit, and the compression spring 233 is located between the moving contact unit 320 and the static contact unit 310.

[0170] In this embodiment, the driving requirements of closing and opening can be met at the same time through the connection structure 230. When the push card 220 presses the movable contact unit 320, so that the movable contact unit 320 approaches the stationary contact unit 310 and the movable contact 322 of the movable contact unit 320 contacts the stationary contact 312 of the stationary contact unit 310, elastic pressure is applied to the movable contact unit 320 through the compression spring 233, so that the pressure between the movable contact 322 and the stationary contact 312 is too large to cause damage to the movable contact 322 and the stationary contact 312; when the push card 220 moves in the direction away from the stationary contact unit 310 and pulls the movable contact unit 320, the push card 220 transmits the pulling force through the hanging assembly instead of transmitting the pulling force through the compression spring 233, so that the compression spring 233 can be prevented from being damaged.

[0171] In some embodiments, the hanging assembly includes a first connecting member 231 and a second connecting member 232, wherein the first connecting member 231 is fixedly connected to the moving touch unit 320, and the second connecting member 232 is fixedly connected to the pushing card 220, and the second connecting member 232 and the first connecting member 231 can be movably hung and matched, and the second connecting member 232 is suitable for relative rotation or movement with the first connecting member 231 within a preset range.

[0172] The first connecting member 231 is suitable for relative rotation with the second connecting member 232 within a preset range, which can meet the angle change requirements between the push card 220 and the movable contact unit 320 during the opening and closing action, avoid the formation of torque between the push card 220 and the movable contact unit 320, affect the opening and closing effect, and prevent damage to the connection position between the push card 220 and the movable contact unit 320. The first connecting member 231 is suitable for relative movement with the second connecting member 232 within a preset range, and the compression spring 233 can be used to achieve over-travel pressing to achieve a more stable closing effect.

[0173] Optionally, one of the first connecting member 231 and the second connecting member 232 has a hanging hole 2313, and the other of the first connecting member 231 and the second connecting member 232 can be movably inserted into the hanging hole 2313. That is, the first connecting member 231 has a hanging hole 2313, and the second connecting member 232 can be movably inserted into the hanging hole 2313, or the second connecting member 232 has a hanging hole 2313, and the first connecting member 231 can be movably inserted into the hanging hole 2313. For ease of description, the first connecting member 231 having the hanging hole 2313 is taken as an example for exemplary introduction.

[0174] Exemplarily, the first connecting member 231 includes an ear 2312, which is fixedly connected to the moving contact unit 320, and has a hanging hole 2313. The second connecting member 232 includes a connecting shaft, which is fixedly arranged on the push card 220 and movably penetrates the hanging hole 2313. The moving direction of the connecting shaft in the hanging hole 2313 includes the arrangement direction of the moving contact unit 320 and the stationary contact unit 310. The connecting shaft is fixedly arranged on the push card 220, which means that the connecting shaft is located in the push card 220 and is fixed relative to the push card 220. The moving direction of the connecting shaft in the hanging hole 2313 includes the arrangement direction of the movable contact unit 320 and the static contact unit 310, which means that the connecting shaft can generate displacement in the hanging hole 2313, and the displacement is along the arrangement direction of the movable contact unit 320 and the static contact unit 310 or includes a component along the arrangement direction of the movable contact unit 320 and the static contact unit 310. Thus, the relative position between the pushing card 220 and the ear 2312 can be changed, thereby realizing the functions of pressing by the compression spring 233 and pulling by the first connecting member 231 and the second connecting member 232.

[0175] In some embodiments, a plurality of first connectors 231 are provided, and the plurality of first connectors 231 are respectively fixedly connected to the moving contact unit 320, and the plurality of first connectors 231 respectively have a hanging hole 2313, and the second connector 232 is respectively movably hung and matched with the plurality of first connectors 231. By providing a plurality of first connectors 231 and connecting the plurality of first connectors 231 to the second connector 232, the force on a single first connector 231 can be reduced, which is conducive to reducing the risk of damage and improving driving stability.

[0176] Further, when there are multiple movable springs 321 and multiple movable springs 321 are arranged side by side, each movable spring 321 is connected to at least one ear 2312. Taking the case where two movable springs 321 are arranged side by side as an example, two ears 2312 can be provided, and the two movable springs 321 are connected to the two first connecting members 231 in a one-to-one correspondence. In this way, the push card 220 can meet the driving requirements of multiple movable springs 321 at the same time.

[0177] Combination Fig. 27 and Fig.28 In some embodiments, the first connecting member 231 includes a fixing portion 2311 and an ear portion 2312 , the fixing portion 2311 is fixedly connected to the moving touch unit 320 , the ear portion 2312 is vertically fixed to the fixing portion 2311 , and the hanging hole 2313 is provided on the ear portion 2312 .

[0178] Exemplarily, the fixing portion 2311 is located on a side of the movable spring 321 away from the movable contact 322 , and the fixing portion 2311 is fixedly connected to the movable spring 321 via a rivet.

[0179] Exemplarily, the first connecting member 231 includes two fixing portions 2311 and two ears 2312 , the two fixing portions 2311 and the two ears 2312 are symmetrical about the same plane perpendicular to the fixing portions 2311 , and the two fixing portions 2311 are fixedly connected to the two ears 2312 in a one-to-one correspondence.

[0180] Optionally, one end of the compression spring 233 close to the moving contact unit 320 is fixedly connected to the fixing portion 2311. The fixing effect of the fixing portion 2311 can maintain the position between the end of the compression spring 233 close to the moving contact unit 320 and the moving contact unit 320 stable, thereby preventing the compression spring 233 from being lost.

[0181] Exemplarily, the first connecting member 231 includes two fixing portions 2311 , and the compression spring 233 is located between the two fixing portions 2311 and fixedly connected to the two fixing portions 2311 at the same time.

[0182] Optionally, there is a movable gap between adjacent fixing portions 2311, and the movable gap is opposite to the gap between adjacent movable springs 321. By setting the movable gap, different movable springs 321 can produce swing angle deviations, so that after ablation of some movable contacts 322 or static contacts 312 occurs, it can be ensured that each movable contact 322 can contact its corresponding static contact 312. The implementation principle can be referred to the above description and will not be repeated here.

[0183] Optionally, the fixing portion 2311 , the ear portion 2312 and the compression spring 233 are integrally formed, thereby reducing the difficulty of production and installation and facilitating ensuring the stability of the relative positions of the fixing portion 2311 , the ear portion 2312 and the compression spring 233 .

[0184] Combination Fig.29 In other embodiments, the first connecting member 231 includes an ear portion 2312, the ear portion 2312 is formed by bending the movable spring 321 in one piece, and the hanging hole 2313 is provided in the ear portion 2312. The structure in which the ear portion 2312 and the movable spring 321 are formed in one piece is conducive to improving the stability of the relative position between the ear portion 2312 and the movable spring 321, and reducing the complexity of the connection structure 230.

[0185] Combination Fig.25 and Fig.26In some embodiments, in the vertical direction of the wall surface of the movable spring 321 close to the connecting shaft, the size of the hook hole 2313 is larger than the diameter of the connecting shaft. As a result, the connecting shaft can be displaced in the hook hole 2313 in the direction perpendicular to the wall surface of the movable spring 321 close to the connecting shaft, and then when the push card 220 pushes the movable spring 321, the pressure is applied by the compression spring 233 first, reducing the risk of compression damage of the movable contact 322 and the static contact 312. And avoid the force between the movable contact 322 and the static contact 312 directly impacting the push card 220.

[0186] Combination Fig.23 and Fig. 27 , further, in the parallel direction of the wall surface of the movable spring 321 close to the connecting shaft, the size of the hanging hole 2313 is larger than the diameter of the connecting shaft. It can be understood that when the armature assembly 210 rotates, it will drive the end of the push card 220 connected to the armature assembly 210 to generate displacement along the first direction X, and when the movable contact unit 320 approaches or moves away from the static contact unit 310, it will drive the first connecting member 231 to generate displacement along the first direction X. By setting the hanging hole 2313 to the above-mentioned structural form, the influence of the displacement of the push card 220 or the first connecting member 231 along the first direction X on the connection position of the first connecting member 231 and the connecting shaft can be eliminated, thereby preventing the first connecting member 231 and the connecting shaft from being damaged.

[0187] In the above embodiment, the hanging hole 2313 can be a through hole or a blind hole structure, and in different ears, the form of the hanging hole 2313 can be the same or different, for example, some of the hanging holes are through holes, and another part of the hanging holes are blind holes, or all of the hanging holes are through holes, or all of the hanging holes are blind holes.

[0188] In this embodiment, the first connecting member can be connected to the dynamic spring 321 in the dynamic contact unit 320, or it can be connected to the dynamic conductive magnet 323 in the dynamic contact unit 320, and the connection position between the first connecting member 231 and the dynamic contact unit 320 can be the movable end, the middle or other position of the dynamic contact unit 320.

[0189] Combination Fig.30 Optionally, the push card 220 is provided with a through hole 221 , and the connecting shaft is connected and fixed to the push card 220 through the through hole 221 .

[0190] Alternatively, the connecting shaft is integrally formed with the pushing card 220 .

[0191] Combination Figure 7 and Figure 8As an optional form of the connection structure 230, the connection structure 230 includes a pull rod 234, one end of which is connected to the push card 220, and the other end of which is fixedly connected to the moving contact unit 320. The pull rod 234, as a transmission member between the push card 220 and the moving contact unit 320, can meet the push and pull requirements of the push card 220 on the moving contact unit 320. In addition, connecting the push card 220 and the moving contact unit 320 through the pull rod 234 is also conducive to increasing the transmission ratio and meeting the requirements of a large contact gap.

[0192] In some embodiments, the pull rod 234 includes a hook 2341 and a pressure plate 2342, wherein the first end of the hook 2341 is fixedly connected to the moving contact unit 320, and the second end is rotatably connected to the push card 220. One end of the pressure plate 2342 is fixedly connected to the first end of the hook 2341, and the other end of the pressure plate 2342 is located on a side of the push card 220 close to the moving contact unit 320.

[0193] In this embodiment, the pull rod 234 can be connected to the dynamic spring 321 in the dynamic contact unit 320, or it can be connected to the dynamic conductive magnet 323 in the dynamic contact unit 320, and the connection position between the pull rod 234 and the dynamic contact unit 320 can be the movable end, the middle or other position of the dynamic contact unit 320.

[0194] Preferably, the dynamic magnet 323 is located in the middle of the dynamic spring 321, and the pull rod 234 is connected to the dynamic magnet 323. When the push card 220 moves toward the direction close to the static contact unit 310, the push card 220 presses the pressure plate 2342, and the pressure plate 2342 further drives the dynamic magnet 323 to move toward the direction close to the static contact unit 310. When the push card 220 moves toward the direction away from the static contact unit 310, the push card 220 pulls the hook 2341 to move toward the direction away from the static contact unit 310, thereby driving the dynamic magnet 323 to move toward the direction away from the static contact unit 310. When the dynamic magnet 323 approaches or moves away from the static contact unit 310, it can drive the dynamic spring 321 to approach or move away from the static contact unit 310, and further close or disconnect the dynamic contact 322 and the static contact 312.

[0195] In this embodiment, the position where the pull rod 234 is connected to the moving contact unit 320 is the moving magnet 323. During the opening and closing process, a small displacement of the pull rod 234 can cause a large displacement of the moving contact 322, which is conducive to meeting the large gap requirement.

[0196] In this embodiment, the pressing plate 2342 of the pull rod 234 not only presses the moving magnet 323 , but also cooperates with the hook 2341 to limit the position, thereby preventing the push card 220 from being decoupled from the pull rod 234 .

[0197] Optionally, the pressure plate 2342 can be a rigid plate or an elastic plate. Preferably, the pressure plate 2342 is an elastic plate, so that when the moving contact unit 320 is pressed, the pressure plate 2342 is compressed to provide over-travel contact pressure, thereby ensuring stability and preventing damage to components such as the moving spring 321, the moving contact 322 and the static contact 312.

[0198] Optionally, the hook 2341 and the moving magnet 323 are fixed by riveting. The riveting fixation method can not only achieve a stable connection between the hook 2341 and the moving magnet 323 and the hook 2341, but also enable the pressure plate 2342 to better apply pressure to the moving magnet 323.

[0199] Combination Figure 3 and Figure 4 In some embodiments, when a short circuit occurs, the magnetic attraction between the dynamic magnet 323 and the static magnet 313 increases, causing the middle part of the dynamic spring 321 in the dynamic contact unit 320 to bend in the direction close to the static contact unit 310. If the push system 200 is connected to the dynamic spring 321, the compression spring 233 or the pressure plate 2342 in the push system 200 is affected by the deformation of the dynamic spring 321 and twists, and the end of the compression spring 233 or the pressure plate 2342 that is away from the dynamic spring 321 is blocked by the push card 220 and cannot rotate in the direction away from the static contact unit 310, so the deformation of the compression spring 233 or the pressure plate 2342 is relatively large. When the compression spring 233 or the compression plate 2342 is connected to the moving magnet 323 , since the moving magnet 323 is not easily deformed relative to the moving spring 321 , the deformation distance of the compression spring 233 or the compression plate 2342 in the Y direction is relatively small.

[0200] Combination Fig.30 In some embodiments, the push card 220 is provided with an axial hole 222, which is located near the end of the push card 220 and penetrates the push card 220. The push card 220 forms a hanging shaft 223 on the side of the axial hole 222 away from the armature assembly 210. The second end of the hook 2341 is penetrated through the axial hole 222 and wrapped around the outer side of the hanging shaft 223, so as to realize the hanging cooperation between the push card 220 and the hanging shaft 223. The end of the pressing plate 2342 away from the moving magnet 323 is located on the side of the hanging shaft 223 close to the moving contact unit 320, which can prevent the hook 2341 from being separated from the hanging shaft 223. In addition, when the push card 220 moves toward the direction close to the static contact unit 310, the hanging shaft 223 presses the pressing plate 2342 to apply pressure close to the static magnet 313 to the moving magnet 323.

[0201] Optionally, the second end of the hook 2341 is loosely matched with the hanging shaft 223, so that the hook 2341 and the hanging shaft 223 can generate relative rotation, meeting the requirement of changing the angle of the push card 220 and the hook 2341 during the opening and closing action.

[0202] Optionally, the pull rod 234 is made of metal, which has the advantages of good rigidity and resistance to deformation, and can transmit the force more efficiently.

[0203] Combination Figure 7 and Figure 8 In some embodiments, there are multiple moving magnets 323 and multiple hooks 2341, multiple hooks 2341 are disposed on multiple moving magnets 323, and the pressing plate 2342 is fixedly connected to any one of the hooks 2341 or any two adjacent hooks 2341. Exemplarily, there are two moving magnets 323, two hooks 2341 are disposed corresponding to the moving magnets 323, and the pressing plate 2342 is fixedly connected to the two hooks 2341 at the same time. Thus, during the disconnection process, the two hooks 2341 act on the two moving magnets 323 respectively to ensure that the two moving magnets 323 are away from the static magnet 313 at the same time, and during the closing process, the pressing plate 2342 can press the two moving magnets 323 at the same time to make the two moving magnets 323 move towards the direction close to the static magnet 313 at the same time.

[0204] Optionally, the pressing plate 2342 includes a first pressing portion 2343 and a second pressing portion 2344, one end of the first pressing portion 2343 is fixedly connected to one of the hooks 2341, and the other end is fixedly connected to the second pressing portion 2344, one end of the second pressing portion 2344 is fixedly connected to an adjacent hook 2341, and a gap is formed between the first pressing portion 2343 and the second pressing portion 2344. The pressing plate 2342 of this structure can apply pressure to two adjacent moving magnets 323 at the same time, and allows the two connected moving magnets 323 to form a position difference in the direction toward the static magnet 313, so that after ablation of part of the moving contact 322 or the static contact 312 occurs, it can ensure that each moving contact 322 can contact its corresponding static contact 312.

[0205] Optionally, the first pressing portion 2343 and the second pressing portion 2344 both include a first inclined section and a second inclined section, wherein one end of the first inclined section is connected to the hook 2341, and the other end is connected to the second inclined section, and the angle between the first inclined section and the dynamic magnet 323 is greater than the angle between the second inclined section and the dynamic magnet 323. Thus, the first pressing portion 2343 and the second pressing portion 2344 can be better transmitted to the dynamic magnet 323.

[0206] Optionally, the second inclined section is parallel to the dynamic conductive magnet 323 , that is, the angle between the second inclined section and the dynamic conductive magnet 323 is 0°.

[0207] It is worth noting that the two connection structures 230 described in the above embodiments and the connection structures 230 shown in the drawings are only two optional examples, and other structural forms of connection structures 230 should also be within the protection scope of the embodiments of the present application. And the connection position between the connection structure 230 and the moving contact unit 320 is not limited by the specific structure of the connection structure 230. For example, the connection position between the first connection member 231 and the pull rod 234 and the moving contact unit 320 can be the end, middle or near the middle of the moving spring 321, or the moving magnet 323, etc.

[0208] In some embodiments, the connection position between the push system 200 and the moving contact unit 320 is located at the movable end of the moving contact unit 320 (refer to Figure 2 and Figure 3 ). The movable end of the movable contact unit 320 refers to an end of the movable contact unit 320 that is suitable for approaching or moving away from the stationary contact unit 310 under the drive of the propulsion system 200.

[0209] In the above embodiment, the pushing system 200 is connected to the movable end of the moving touch unit 320. Therefore, the position where the pushing system applies force to the moving touch unit 320 is farther away from the fixed end of the moving touch unit 320 (the end fixed relative to the static touch unit 310), that is, the force arm is larger, and it is easier to drive the moving touch unit 320 to swing.

[0210] In other embodiments, the connection position between the pushing system 200 and the moving contact unit 320 is located in the middle or near the middle of the moving contact unit 320 (see Figure 4 and Figure 5 For example, the connection position between the pushing system and the moving contact unit 320 is located in the middle of the moving spring 321 , or the moving magnet 323 is located in the middle of the moving spring 321 , and the pushing system 200 is connected to the moving magnet 323 .

[0211] Compared with the solution in which the pushing system 200 is connected to the movable end of the moving contact unit 320, this embodiment has at least the following advantages: the distance from the connection position to the fixed end of the moving contact unit 320 is smaller than the distance from the moving contact 322 to the fixed end of the moving contact unit 320. Therefore, during the opening and closing process, the displacement of the connection position is smaller than the displacement of the moving contact 322. In other words, a larger displacement of the moving contact 322 can be achieved through a smaller displacement of the connection position, which is conducive to meeting the large gap requirements.

[0212] In some embodiments, the dynamic magnet 323 is located in the middle or near the middle of the dynamic spring 321, and the driving system 200 is connected to the dynamic magnet 323, for example, the compression spring 233 or the pressure plate 2342 is installed together with the dynamic magnet 323 in the middle of the dynamic spring 321 by rivets. This is beneficial to reduce the occupied space and improve the installation efficiency.

[0213] Combination Figure 2 and Fig.31 In some embodiments, the relay 10 further includes an arc extinguishing grid 500 , which is disposed adjacent to the stationary contact 312 and the movable contact 322 .

[0214] Optionally, the arc extinguishing grid 500 is fixedly connected to the housing 100 , and the arc extinguishing grid 500 is located in the installation cavity.

[0215] The above-mentioned proximity arrangement to the static contact 312 and the movable contact 322 means being adjacent to the static contact 312 and the movable contact 322 , and the distance to the static contact 312 and the movable contact 322 is within a preset range, so that the arc extinguishing grid 500 can capture and extinguish the arc of the static contact 312 and the movable contact 322 .

[0216] At the moment when the contacts are separated or closed, an arc may be generated due to the change of current. The arc will not only cause serious ablation of the contacts, reduce the service life of the relay 10, but also may cause safety hazards such as short circuits. In order to effectively deal with this problem, the relay 10 in this embodiment is specially provided with an arc extinguishing grid 500. The arc extinguishing grid 500 can extinguish the arc. The arc extinguishing grid 500 is composed of a metal sheet or a grid, which can divide the arc and accelerate its cooling and extinguishing process. The arc extinguishing grid 500 is fixedly connected to the housing 100 by means such as welding, screwing, clamping or bonding, ensuring the stability and reliability of the arc extinguishing grid 500 during the operation of the relay 10, and avoiding loosening or damage caused by vibration or impact. The arc extinguishing grid 500 is arranged in the installation cavity and is close to the static contact 312 and the moving contact 322, so that the arc extinguishing grid 500 can play a role at the first time when the arc is generated, effectively guide the arc to between the grids, and quickly extinguish the arc through mechanisms such as segmentation and cooling. The arc extinguishing performance of the relay 10 can be significantly improved, the service life of the contacts and other components such as the push card 220 can be extended, and the potential safety hazards caused by the electric arc can be reduced.

[0217] Optionally, the arc extinguishing grid 500 is located on one side of the first direction X of the contact position of the static contact 312 and the moving contact 322. It can be understood that since one end of the moving contact unit 320 of the embodiment of the present application is fixed relative to the static contact unit 310, and the other end is suitable for approaching or moving away from the static contact unit 310 under the drive of the pushing system 200, the moving contact 322 and the static contact 312 are in a snapping action form, therefore, there must be a problem of contact overlapping the bell mouth, and the arc is easy to splash in the direction of the bell mouth opening, and when a large contact gap is used, the bell mouth is larger, the arc splash range is more uncontrollable, and it is easy to burn the push card 220 and other components. In this embodiment, the arc extinguishing grid 500 is arranged on one side of the first direction X of the contact position of the static contact 312 and the moving contact 322 (i.e., one side in the direction of the bell mouth opening) can significantly improve the arc extinguishing ability of the arc extinguishing grid 500 and solve the problem of arc splashing.

[0218] In some embodiments, the arc chute 500 includes a mounting plate 510 and a plurality of grid segments 520 .

[0219] The mounting plate 510 is fixed in position, for example, fixedly arranged on one side of the contact position of the static contact 312 and the moving contact 322 in the first direction X. For example, the mounting plate 510 is perpendicular to the first direction X. The mounting plate 510 is fixedly connected to the housing 100 by, for example, welding, clamping or bonding.

[0220] The plurality of grid sheets 520 are located on one side of the mounting plate 510 close to the stationary contact 312 and the movable contact 322 , and are fixedly connected to the mounting plate 510 .

[0221] Optionally, the mounting plate 510 is made of insulating material such as plastic, and the grid 520 is made of metal.

[0222] Optionally, the mounting plate 510 is perpendicular to the third direction Y, and the grid plate 520 is perpendicular to the second direction Z and is vertically fixed to the mounting plate 510 .

[0223] In this embodiment, the mounting plate 510 can realize the installation and fixation of the plurality of grid plates 520, maintain the stability of the relative positions of the plurality of grid plates 520, and realize the functions of arc initiation and arc extinguishing.

[0224] In some embodiments, the arrangement direction of the plurality of grid sheets 520 is parallel to the arrangement direction of the moving contact unit 320 and the stationary contact unit 310. That is, the arrangement direction of the plurality of grid sheets 520 is along the second direction Z.

[0225] Arranging the plurality of grid pieces 520 along the second direction Z can better match the snapping direction of the moving contact unit 320 and the stationary contact unit 310 , thereby achieving good arc striking and arc extinguishing effects during the opening and closing process of the moving contact 322 and the stationary contact 312 .

[0226] In some embodiments, at least part of the grid pieces 520 are provided with arc-striking structures 530. For example, one or more grid pieces 520 near the contact position between the moving contact 322 and the stationary contact 312 among the plurality of grid pieces 520 are provided with arc-striking structures 530. The arc-striking structures 530 are arranged at an angle to the grid pieces 520. One end of the arc-striking structures 530 is fixedly connected to the grid pieces 520, and the other end extends toward a side near the contact position between the stationary contact 312 and the moving contact 322.

[0227] Exemplarily, the arc-striking structure 530 is located on one side of the grid sheet 520 close to the contact position between the static contact 312 and the movable contact 322 . The arc-striking structure 530 is perpendicular to the grid sheet 520 and one end of the arc-striking structure 530 is fixedly connected to the grid sheet 520 .

[0228] Optionally, the arc-starting structure 530 and the grid plate 520 are formed integrally.

[0229] The arc striking structure 530 can more easily capture the arc generated between the moving contact 322 and the stationary contact 312, thereby achieving a better arc extinguishing effect.

[0230] Optionally, the moving contact unit 320 includes a plurality of moving contacts 322, and the stationary contact unit 310 includes a plurality of stationary contacts 312. The plurality of moving contacts 322 and the plurality of stationary contacts 312 are arranged at intervals along the second direction Z, and the plurality of moving contacts 322 and the plurality of stationary contacts 312 correspond to each other one by one. At least part of the grid sheet 520 is provided with a plurality of arc-starting structures 530. The plurality of arc-starting structures 530 on the same grid sheet 520 are arranged at intervals along the second direction Z, and correspond to each other one by one with the plurality of contact positions formed by the plurality of moving contacts 322 and the plurality of stationary contacts 312.

[0231] For example, the number of the moving contacts 322 and the number of the stationary contacts 312 are both two, and the two moving contacts 322 correspond to the two stationary contacts 312 one by one, thereby forming contact positions of the two moving contact units 320 and the stationary contact unit 310. The grid sheet 520 having an arc-starting structure 530 is provided with two arc-starting structures 530, and the two arc-starting structures 530 are arranged along the second direction Z, and the two arc-starting structures 530 correspond to the two contact positions one by one.

[0232] In this embodiment, by means of a plurality of arc-starting structures 530 corresponding to a plurality of contact positions respectively, it can be ensured that the arcs generated at the plurality of contact positions can all be guided to the grid piece 520 .

[0233] In some embodiments, the mounting plate 510 is provided with a hollow hole 511 , and the hollow hole 511 passes through the mounting plate 510 along the first direction X.

[0234] Optionally, the mounting plate 510 is provided with a plurality of hollow holes 511 , and the plurality of hollow holes 511 penetrate the mounting plate 510 along the first direction X respectively.

[0235] Optionally, at least one hollow hole 511 is disposed between every two adjacent grid plates 520 .

[0236] The hollow hole 511 can realize the connection between the two sides of the mounting plate 510, thereby preventing charged particles from gathering on one side of the mounting plate 510 close to the contact position between the moving contact 322 and the static contact 312 when an arc is generated, which is conducive to the discharge of charged particles, thereby ensuring the arc extinguishing effect.

[0237] Combination Fig.32 In some embodiments, the housing 100 is provided with an arc discharge hole 130 , which communicates with the installation cavity and the outside of the housing 100 and is disposed adjacent to the arc extinguishing grid 500 .

[0238] When an arc is generated between the static contact 312 and the movable contact 322, charged particles gather in the cavity. When a certain density is reached in the air, the arc extinguishing effect of the arc extinguishing grid 500 will deteriorate. The arc discharge hole 130 can utilize the pressure difference between the inside and outside of the housing 100 generated by the arc to form an airflow, which drives the charged particles to be discharged, thereby ensuring the arc extinguishing effect of the arc extinguishing grid 500.

[0239] The present embodiment does not specifically limit the size and shape of the arc discharge hole 130. The size and shape of the arc discharge hole 130 can be flexibly determined according to the specific type and working environment of the relay 10. If the size is too large, the arc may spread during the discharge process, increasing the safety risk; if the size is too small, the discharge speed of the arc may be limited, affecting the arc extinguishing efficiency.

[0240] Optionally, the arc discharge hole 130 includes a first perforation 131, which is located at a corner of the housing 100 and is arranged adjacent to the arc extinguishing grid 500. By arranging the first perforation 131 at the corner of the housing 100, the spatial advantage of the corner can be utilized to provide a smoother discharge path for the arc. Inside the relay 10, the arc tends to move along the direction of the maximum electric field intensity, and the corner layout helps to guide the arc to be discharged along the edge of the housing 100, reducing the potential threat of the arc to internal components. In addition, the corner position is relatively independent and has less interference with other components. This helps to ensure that the arc will not be hindered by other components during the discharge process, thereby improving the efficiency and safety of the arc discharge. In addition, the corner of the housing 100 usually has better heat dissipation conditions because the corner is more likely to contact the outside air. By arranging the first perforation 131 at the corner, this heat dissipation advantage can be utilized to accelerate the heat dissipation process after the arc is discharged and prevent the housing 100 from being damaged due to overheating.

[0241] Optionally, the housing 100 includes a first housing 110 and a second housing 120, the first housing 110 and the second housing 120 are detachably connected, and the arc discharge hole 130 includes a second through hole 132, and the second through hole 132 is located at the connecting position of the first housing 110 and the second housing 120. Providing the second through hole 132 at the connecting position of the first housing 110 and the second housing 120 not only has the advantage of easy processing and forming, but also generally does not have a significant impact on the structural strength of the housing 100. Through reasonable design and manufacturing process, it can be ensured that the relay 10 has excellent performance and reliability.

[0242] In the above embodiment, the arc extinguishing grid 500 and the arc discharge hole 130 can effectively control or eliminate the influence of the arc, thereby improving the safety and service life of the relay 10.

[0243] In some embodiments, components such as the dynamic spring 321 and the dynamic magnet 323 can also be used to reduce the impact of the arc. Specifically, the connection position between the push system 200 and the connection structure 230 is located on the side of the dynamic contact unit 320 away from the static contact unit 310.

[0244] Furthermore, the connection position between the pushing system 200 and the connection structure 230 is located on the side of the movable spring 321 away from the movable contact 322 .

[0245] Optionally, the connection position between the connection structure 230 and the moving contact unit 320 is located on the side of the moving contact unit 320 away from the stationary contact unit 310. For example, the connection structure 230 is connected to the side of the moving spring 321 away from the moving contact point 322 or connected to the moving magnet 323.

[0246] Arranging the connection position between the push system 200 and the connection structure 230 and / or the connection position between the connection structure 230 and the moving contact unit 320 on the side of the moving contact unit 320 away from the stationary contact unit 310 can effectively block most of the splash arcs. This is because the arc mainly propagates along the contact gap, and the connection position is located outside the gap. By blocking the splash arc by the moving contact unit 320, the arc can effectively prevent damage to other components such as the push card 220, thereby improving the overall reliability and service life of the relay 10.

[0247] In some embodiments, the moving contact 322 is adapted to move between a first position in contact with the stationary contact 312 and a second position separated from the stationary contact 312, and the distance between the first position and the second position is greater than or equal to 5.5 mm. In this embodiment, the distance between the first position and the second position is the maximum contact gap of the relay 10, and the maximum contact gap is set to be greater than or equal to 5.5 mm, which can meet the new phenotypic requirements in the fields of photovoltaics, energy storage, etc.

[0248] Combination Fig.33 and Fig.34 The embodiment of the present application also provides an electric meter 20, including the above-mentioned relay 10.

[0249] Optionally, the electric meter 20 is provided with an inner cavity 21 and a terminal block 22, the relay 10 is fixedly arranged in the inner cavity 21, the terminal block 22 has a wiring port 23 and a lead end 24, wherein the interface is located in the inner cavity 21 and is connected to the terminal group of the relay 10, and the lead end 24 is located outside the inner cavity 21 and is suitable for an external circuit.

[0250] Since the electric meter 20 of the embodiment of the present application has all the technical features of the relay 10 of the above embodiment, it can also have all the advantages of the relay 10 of the above embodiment, which will not be elaborated here.

[0251] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0252] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A relay, characterized in that: include: A contact system, the contact system comprising a moving contact unit and a stationary contact unit; Propulsion system; A connecting structure connects the pushing system and the moving contact unit, wherein a connecting position between the connecting structure and the pushing system is located on a side of the moving contact unit away from the stationary contact unit.

2. The relay according to claim 1, characterized in that: One end of the moving contact unit is fixed relative to the stationary contact unit, and the other end is suitable for approaching or moving away from the stationary contact unit under the drive of the propulsion system.

3. The relay according to claim 2, characterized in that: The connection position between the connection structure and the moving contact unit is located at the movable end of the moving contact unit; Alternatively, the connection position between the connection structure and the moving contact unit is located in the middle of the moving contact unit or close to the middle.

4. The relay according to any one of claims 1 to 3, characterized in that: The connection position between the connection structure and the moving contact unit is located at a side of the moving contact unit away from the stationary contact unit.

5. The relay according to any one of claims 1 to 3, characterized in that: The pushing system includes a pushing card, and the connecting structure includes: A hook assembly, connecting the push card and the moving contact unit, and configured to allow the push card and the moving contact unit to rotate and move relative to each other within a preset range; A compression spring is located between the push card and the movable contact unit.

6. The relay according to claim 5, characterized in that: The mounting assembly comprises: A first connecting member, fixedly connected to the moving contact unit; The second connecting member is fixedly connected to the push card, and the second connecting member and the first connecting member can be movably hooked and matched. The second connecting member is suitable for relative rotation or movement with the first connecting member within the preset range.

7. The relay according to claim 6, characterized in that: One of the first connecting member and the second connecting member has a hanging hole, and the other of the first connecting member and the second connecting member can be movably inserted into the hanging hole.

8. The relay according to claim 7, characterized in that: The first connecting member comprises: An ear portion, fixedly connected to the moving contact unit, and the hanging hole is arranged on the ear portion; The second connecting member comprises a connecting shaft, and the connecting shaft is movably plugged into and matched with the hanging hole.

9. The relay according to claim 8, characterized in that: The dynamic contact unit includes a dynamic spring; The ear portion is formed by integrally bending the movable spring, or the first connecting member further includes a fixing portion, the fixing portion is fixedly connected to the movable spring, and the ear portion is fixedly connected to the fixing portion.

10. The relay according to claim 9, characterized in that: In the vertical direction of the wall surface of one side of the movable spring close to the connecting shaft, the size of the hanging hole is larger than the diameter of the connecting shaft; And / or, in a direction parallel to a side wall of the movable spring close to the connecting shaft, a size of the hanging hole is larger than a diameter of the connecting shaft.

11. The relay according to claim 8, characterized in that: The push card is provided with a through hole, and the connecting shaft is connected and fixed to the push card through the through hole; Alternatively, the connecting shaft is integrally formed with the pushing card.

12. The relay according to claim 7, characterized in that: There are multiple first connecting members, each of which is fixedly connected to the moving contact unit, and each of which has the hanging hole. The second connecting member can be movably plugged into and matched with the hanging holes of each of the first connecting members.

13. The relay according to claim 12, characterized in that: The dynamic contact unit includes a dynamic spring, a plurality of the dynamic springs are arranged side by side, and each of the dynamic springs is correspondingly connected to at least one of the first connecting members.

14. The relay according to claim 6, characterized in that One end of the compression spring close to the moving contact unit is fixedly connected to the first connecting member.

15. The relay according to claim 14, characterized in that: The compression spring and the first connecting member are integrally formed.

16. An electric meter, characterized in that: Comprising a relay as described in any one of claims 1-15.

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