A push portion and a relay

Abstract

The utility model discloses a push part and relay, this push part is used for pushing the movable contact in at least one switch of the contact part of relay to close or disconnect with the fixed contact, it includes: mounting seat, two metal swing arms, two in first axial side of at least one movable contact, and through the pivot rotatablely connected in mounting seat to swing around the first axis, and the extension direction of first axis is first axial, and push unit, its connection two metal swing arms and can swing around the first axis relative mounting seat, and is used for pushing the movable contact with two metal swing arm position corresponds. Push part and relay that adopts above -mentioned technical scheme can improve the problem that the push part is squeezed because the size is larger and occupies the internal space of relay.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, specifically to a driving part and a relay. Background Technology

[0002] Relays in the prior art are generally used to receive excitations or signals from external circuits to control the on / off state of the external circuit or one of its branches. A relay generally includes a driving part, a pushing part, and a contact part. The driving part receives excitations or signals from the external circuit to drive the pushing part. The driving part generally includes a coil assembly and an armature assembly. The coil assembly drives the armature assembly to move between two positions based on different signals or excitations. The contact part generally includes a moving contact and a stationary contact. The pushing part is generally driven by the armature assembly and connected to the moving contact to push the moving contact to close with the stationary contact.

[0003] With technological advancements, relays have evolved to utilize a motor as the driving power source, which, in conjunction with a transmission mechanism, forms the driving section. To accommodate this driving section, the structure of the actuating section has also been adjusted. For example, the actuating section can employ a rotary structure, driven by the driving section to reciprocate or rotate around a pre-set fixed axis. When using a rotary structure for the actuating section, sufficient mechanical strength is required to ensure normal operation during high-frequency switching and closing conditions. However, to meet the mechanical strength requirements of a conventional rotary structure's actuating section, its size or thickness often needs to be increased. This results in a larger actuating section encroaching on the relay's internal space, leading to a larger overall relay size. This, in turn, limits the relay's application in confined installation environments, thus restricting its range of applications.

[0004] Application content

[0005] The purpose of this invention is to overcome the aforementioned defects or problems in the prior art and to provide a driving part and a relay that can improve the problem of the driving part taking up internal space of the relay due to its large size.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pushing portion for pushing a moving contact in at least one switch in the contact portion of a relay to close or open with a stationary contact, comprising: a mounting base; two metal swing arms, positioned on either side of at least one moving contact along a first axial direction and rotatably connected to the mounting base via a pivot to swing about a first axis, the extension direction of the first axis being the first axial direction; and a pushing unit connected to the two metal swing arms and capable of swinging relative to the mounting base about the first axis, for pushing the moving contact corresponding to the position of the two metal swing arms.

[0008] Because the two metal swing arms are located on both sides of at least one moving contact along the first axial direction, they provide clearance for the movement of the moving contact. This allows the moving contact to achieve a large range of motion without significantly increasing the relay size. The use of two metal swing arms in the push section leverages the high structural strength of metal, allowing the size or thickness of these arms, a crucial component of the push section, to be reduced to a suitable range. This minimizes the space occupied by the push section within the relay and ensures sufficient structural strength for the swing arms, facilitating smooth high-frequency switching operations. This contributes to the overall miniaturization and compact design of the relay. Furthermore, when the push section is applied to the relay, the two metal swing arms can be positioned on either side of the moving contact in at least one switch within the relay's contact portion. Due to the relatively thin thickness of the metal swing arms, the moving contact can have a larger width while maintaining or optimizing the total width along the first axial direction of the moving contact and the metal swing arms. This effectively improves the moving contact's ability to carry high currents, enabling the relay to be suitable for higher voltage or high current applications. Meanwhile, the push unit in the push section is used to push the moving contact to move. The two metal swing arms serve as the connection structure between the push unit and the mounting base, allowing the push unit to swing relative to the mounting base. By swinging, the moving contact is pushed to move. Compared with the direct-acting push structure, this can effectively prevent jamming and reduce motion resistance, ensuring that the thrust applied to the moving contact is balanced and the motion trajectory is accurate. This ensures that the relay has reliable and stable switching performance and saves drive energy consumption.

[0009] In at least one embodiment, the mounting base has the pivot, and the pivot is made of metal; the metal swing arm is pivotally connected to the pivot.

[0010] The use of a metal shaft and a metal swing arm creates a pivotal connection between the metal components. This configuration significantly reduces wear on the shaft from the metal swing arm during long-term oscillation, and especially avoids the scraping problems that can occur when the metal swing arm directly mates with non-metallic shafts or mounting bases. Therefore, it helps maintain the cleanliness of the relay's internal components, preventing particle contamination of the contacts due to wear and thus improving the reliability and lifespan of the drive section and the entire relay.

[0011] In at least one embodiment, the metal swing arm is a sheet-like member with a predetermined thickness, the thickness direction of which is parallel to the first axial direction.

[0012] Since the metal swing arm is a sheet-like component with a predetermined thickness, this shape defines that the metal swing arm has a small thickness dimension relative to its width and length, and its thickness direction is parallel to the first axis, thereby further reducing the space occupied by the push part in the first axis. This helps to reduce the overall size of the push part and even the entire relay in the first axis, improving space utilization and design compactness.

[0013] In at least one embodiment, the metal swing arm includes a first portion and a second portion; the first portion is opposite to at least a portion of the energized portion of the movable contact in a first axial direction, and the second portion is not opposite to the energized portion of the movable contact in a first axial direction; the distance between the first portions of the two metal swing arms in a first axial direction is greater than the distance between the corresponding second portions of the two metal swing arms in a first axial direction.

[0014] Since the distance between the first part of the two metal swing arms corresponding to the moving contact in the first axial direction is greater than the distance between the second part of the two metal swing arms that do not correspond to the moving contact in the first axial direction, in areas where the moving contact needs to be accommodated, increasing the distance between the first parts of the two metal swing arms ensures that the moving contact has sufficient space for movement and accommodation. In areas where it is not necessary to directly correspond to the moving contact (such as the connection area near the rotating shaft), decreasing the distance between the two metal swing arms helps to reduce the structural size of these areas, thereby making the space occupied in the first axial direction of the parts of the two metal swing arms that do not need to correspond to the energized parts of the moving contact smaller, thus improving the overall compactness of the structure.

[0015] In at least one embodiment, the metal swing arm comprises, along its length, a shaft connection portion, an extension portion, and a push connection portion; the shaft connection portion is connected to the rotating shaft, and the push connection portion is connected to the push unit; the extension portion forms the first part, and at least the shaft connection portion forms the second part.

[0016] By dividing the metal swing arm along its length into a shaft connection section, an extension section, and a push connection section, with the extension section forming a first part with a larger axial distance and at least the shaft connection section forming a second part with a smaller axial distance, this division of functional areas allows the structure of the metal swing arm to correspond more precisely with its function: the shaft connection section is dedicated to a compact connection with the rotating shaft with a smaller axial distance, the extension section provides ample space for the moving contact to accommodate and operate, and the push connection section is used for a reliable connection with the push unit, thereby achieving a compact connection with the rotating shaft and optimization of the functions of each part.

[0017] In at least one embodiment, the mounting base is provided with a limiting portion; the limiting portion includes two limiting surfaces arranged facing each other and / or back to back along a first axial direction, the two limiting surfaces being adapted to form a limiting engagement with the metal swing arm and / or the pushing unit along the first axial direction to restrict the movement of the metal swing arm and the pushing unit as a whole in the first axial direction.

[0018] Because a limiting part is provided on the mounting base, and two mutually cooperating limiting surfaces are provided on the limiting part, these two limiting surfaces can define a space in the first axial direction that is adapted to the size of the metal swing arm and / or the pushing unit. The metal swing arm and the pushing unit as a whole are confined in this space, thereby preventing the overall structure from shifting in the first axial direction during swinging and ensuring the stability of the pushing part during operation.

[0019] In at least one embodiment, the limiting portion is provided corresponding to the assembly position of the two metal swing arms and has two first limiting surfaces arranged facing each other along the first axial direction, the two first limiting surfaces cooperating to restrict the movement of the two metal swing arms in the first axial direction.

[0020] Because the limiting part provided on the mounting base limits the range of motion of the two metal swing arms and the push unit connected thereto in the first axis through its two first limiting surfaces arranged in opposite directions along the first axis, it effectively prevents the overall structure from unnecessary axial movement or detachment from the mounting base during the swinging process around the first axis, ensuring the stability of the working position of the push part and laying the foundation for realizing a reliable push function.

[0021] In at least one embodiment, the limiting portion further has two second limiting surfaces arranged opposite to each other along the first axial direction, the two second limiting surfaces being located between the two first limiting surfaces along the first axial direction; the two metal swing arms are respectively located between one set of first limiting surfaces and the second limiting surfaces to be positioned in the first axial direction.

[0022] Because the limiting part is also provided with two second limiting surfaces, this double limiting structure formed by the combination of the first and second limiting surfaces not only restricts the overall axial movement of the swing arm assembly, but also provides independent and precise axial positioning for each metal swing arm. This effectively prevents axial movement of individual metal swing arms relative to the axis of rotation or relative to each other, ensuring the accuracy of the relative position between each metal swing arm and the moving contact. Especially in the case of a compact structural arrangement, it can effectively avoid interference between the metal swing arms and the moving contact or other adjacent components, thereby ensuring the reliability of the moving contact's movement.

[0023] In at least one embodiment, the metal swing arm comprises, along its length, a shaft connection portion, an extension portion, and a push connection portion; the shaft connection portion is connected to the rotating shaft, and the push connection portion is connected to the push unit; the limiting portion only engages with the shaft connection portion of the metal swing arm.

[0024] By limiting the contact area between the limiting structure and the metal swing arm to its shaft connection, the contact area between the two can be effectively reduced. This reduced contact area helps decrease the frictional resistance of the metal swing arm during its oscillation around the first axis, resulting in smoother movement of the swing arm. It also reduces wear caused by friction, extends the service life of the actuating components, and may, to some extent, reduce the drive energy consumption of the drive mechanism.

[0025] In at least one embodiment, the end of the metal swing arm is provided with an assembly hole, and the periphery of the assembly hole is provided with a snap-fit ​​interface with an opening size smaller than the maximum inner diameter of the assembly hole. The metal swing arm is elastically snapped into the rotating shaft through the snap-fit ​​interface.

[0026] Because the metal swing arm has a mounting hole with a snap-fit ​​interface at its end, it can be elastically snapped onto the rotating shaft. This utilizes the elastic properties of the metal material, allowing the metal swing arm to be directly snapped onto the shaft without additional fasteners. This simplifies the assembly process, shortens assembly time, and reduces production costs. Simultaneously, the elastic snap-fit ​​provides a certain preload, helping to eliminate gaps, ensuring a tight connection, and offering some resistance to vibration and loosening.

[0027] In at least one embodiment, the rotating shaft has a journal with a smaller outer diameter than other positions; the mounting hole of the metal swing arm is elastically engaged with the journal; the two inner sidewalls of the journal along the first axial direction form a first limiting surface and a second limiting surface corresponding to the position of the limiting part.

[0028] Because the rotating shaft has a journal with a relatively small outer diameter, the mounting hole of the metal swing arm is elastically engaged with this journal. Furthermore, the two inner sidewalls of this journal along the first axial direction (i.e., the stepped surface of the journal) directly form the first and second limiting surfaces for axial positioning. This design simplifies the connection structure between the rotating shaft and the metal swing arm. The journal not only provides an accurate positioning reference for the elastic engagement of the metal swing arm, but its two sidewalls also serve as axial limiting surfaces, integrating assembly positioning and axial limiting functions. This improves assembly accuracy and efficiency, and makes the limiting more reliable and compact.

[0029] In at least one embodiment, the mounting base further includes a base body; the rotating shaft is independently disposed and assembled to the base body; the limiting portion is disposed on the rotating shaft and the base body, or is formed by the rotating shaft and the base body in cooperation.

[0030] Since the mounting base includes a base body and an independent rotating shaft, the structural scheme for achieving axial positioning is further clarified when the limiting part is formed by the rotating shaft, the base body, or a combination of the rotating shaft and the base body. Specifically, when the limiting part is formed by the combination of the rotating shaft and the base body, in addition to axially limiting the two metal swing arms, the base body can simultaneously restrict the axial position of the metal swing arms and the rotating shaft relative to the base body. This method avoids the need for methods requiring high assembly precision and process requirements, such as interference fits, to fix the rotating shaft, making the installation of the rotating shaft more convenient, and ensuring good positional stability of the rotating shaft in the first axial direction.

[0031] In at least one embodiment, the seat includes a first fitting and a second fitting; one end of the pivot is fitted to the first fitting and the other end is fitted to the second fitting; the second fitting is fastened to the first fitting by fasteners; at least one of the metal swing arms is sleeved onto the pivot from one end of the pivot near the second fitting.

[0032] Since the base is composed of a first assembly and a second assembly, the two ends of the rotating shaft are respectively assembled to the two assemblies, and the second assembly is fixed to the first assembly by fasteners, which reduces the difficulty of installing the metal swing arm. With this split base design, at least one metal swing arm can be easily connected from the end of the rotating shaft near the second assembly before the second assembly is fixed, which also facilitates subsequent maintenance or replacement.

[0033] In at least one embodiment, the first assembly and the second assembly are each provided with a first limiting surface, and the rotating shaft is provided with a second limiting surface facing the two first limiting surfaces.

[0034] Because the first limiting surfaces on the two assemblies (the first assembly and the second assembly) of the base body respectively cooperate with the second limiting surfaces on the rotating shaft facing them, the position of the rotating shaft and the metal swing arm mounted on it relative to the fixed base body in the first axial direction can be precisely controlled. This ensures the axial positioning accuracy and operational stability of the entire rotating assembly within the base body, providing a guarantee for the reliable operation of the driving part.

[0035] In at least one embodiment, at least a portion of the second fitting is engaged with the first fitting along a first axial direction.

[0036] By creating an interlocking structure between the second and first components (e.g., through a convex-concave fit or stepped fit for positioning), the connection stability and positioning accuracy between the two components are further enhanced, in addition to the fixing effect of fasteners. This interlocking structure better resists misalignment and deformation that may be caused by vibration or external forces, resulting in a stronger overall rigidity of the assembled base. This provides a more stable support foundation for the pivot and metal swing arm, contributing to improved overall motion accuracy and durability of the driving mechanism.

[0037] In at least one embodiment, a fitting groove adapted to the shape and size of at least a portion of the second assembly is provided at the position where the first assembly is used to install the second assembly, so that at least a portion of the first assembly and the second assembly form a fitting relationship along the first axial direction; and / or, one of the first assembly and the second assembly is provided with a positioning protrusion extending along the first axial direction, and the other is provided with a positioning hole that can be fitted and inserted into the positioning protrusion, so that at least a portion of the first assembly and the second assembly form a fitting relationship along the first axial direction.

[0038] The interlocking groove, positioning protrusion, and positioning hole can reliably position and prevent rotation of the second assembly, so that the second assembly only needs to be fixed by one fastener, simplifying the installation structure. In particular, the interlocking groove also prevents the second assembly from protruding from the surface of the first assembly and increasing the overall size of the structure.

[0039] In at least one embodiment, the pushing unit is at least partially made of plastic and is fixedly connected to the two metal swing arms as a whole by injection molding, riveting, screwing or bonding.

[0040] Because the actuating unit is made of plastic and is fixedly connected to the two metal swing arms as a whole through injection molding, riveting, screwing, or bonding, the injection molding connection method utilizes the characteristics of the injection molding process to tightly integrate the plastic actuating unit with the metal swing arms, forming a component with strong overall structure and a firm connection. The plastic actuating unit has advantages such as light weight, ease of molding complex shapes, low cost, and good electrical insulation, while the metal swing arms ensure structural strength and rigidity. The one-piece injection molding simplifies subsequent assembly processes, improves production efficiency, and ensures effective force transmission when actuating the moving contact.

[0041] In at least one embodiment, the pushing unit includes a pushing body made of plastic and a pre-embedded part made of metal. The pushing body and the pre-embedded part are integrated by injection molding. The two metal swing arms are fixedly connected to the pre-embedded part by riveting, screwing or welding.

[0042] Because the metal swing arm is connected to the embedded metal component, it provides a more robust and reliable connection foundation. The plastic actuator body retains its advantages of being lightweight, easy to mold, and having good electrical insulation, while the mechanical fixing of the metal swing arm to the embedded metal component through riveting, screwing, or welding further ensures the strength and durability of the connection, guaranteeing reliable force transmission.

[0043] In at least one embodiment, the pushing unit includes a pushing body and at least one first elastic element; the pushing body is connected to the metal swing arm; the first elastic element is disposed between the pushing body and the moving contact in the closing direction of the moving contact to provide contact pressure when the moving contact and the stationary contact are closed.

[0044] Because the actuating unit includes an actuating body and at least one first elastic element, the actuating body is connected to a metal swing arm, and the first elastic element is positioned between the actuating body and the moving contact and is configured to correspond to the closing direction of the moving contact, giving the actuating part overtravel and energy storage functions. When the moving contact contacts the stationary contact, the actuating body can continue to move a short distance (overtravel) under external force. During this process, the first elastic element is compressed and stores energy. This ensures that even with manufacturing tolerances or contact wear, stable and sufficient contact pressure is maintained between the moving and stationary contacts, thereby guaranteeing the reliability of switch closure and low contact resistance. Simultaneously, the buffering effect of the first elastic element helps reduce the impact and bounce during contact closure, extends contact life, and reduces operating noise.

[0045] In addition, this utility model also provides the following technical solutions:

[0046] A relay includes: a contact portion including at least one switch, the switch including a moving contact and a stationary contact; and a push portion as described above for pushing the moving contact in the at least one switch of the contact portion to close or open a mounting base with the stationary contact.

[0047] Because this relay employs any of the aforementioned technical solutions for the actuation component, and the mounting base of this actuation component is fixed to or at least partially formed into the relay housing, the entire relay can benefit from the various technical advantages brought by this actuation component, such as compact structure, high space utilization, good mechanical strength, and reliable operation achieved through the application of a metal swing arm. Mounting base

[0048] In at least one embodiment, a housing is also included; the mounting seat in the actuating portion is fixed to or at least partially formed in the housing.

[0049] By securely integrating the mounting base with the housing, the precise installation and stable operation of the actuating component within the relay are ensured, laying a solid structural foundation for improving the overall performance of the relay and ensuring its long-term reliable operation.

[0050] In at least one embodiment, the moving contact includes an actuating portion adapted to swing relative to the housing, and the actuating portion is driven by the pushing unit to close or open with the stationary contact.

[0051] Because the moving contact's actuating part itself has the ability to oscillate around a fulcrum or region, it can better match the oscillating output characteristics of the actuating unit. When the moving contact's actuating part and the actuating unit's movement mode (both oscillating or primarily oscillating) are coordinated, relative slippage or unnecessary angular deviations generated during their movement can be reduced, thereby achieving more direct and efficient force transmission and reducing energy loss and unnecessary wear. In particular, when the actuating unit includes an elastic element (such as a first elastic element), this coordinated oscillation helps the elastic element to be subjected to uniform force during compression and release, avoiding the risk of premature failure, performance degradation, or breakage from the preset position due to uneven force distribution, thus improving the overall reliability and durability of the relay's operation.

[0052] In at least one embodiment, the movable contact pushed by the pushing portion is a flexible movable contact, which includes a fixed portion, an actuating portion, and a flexible connecting portion; the fixed portion is fixed relative to the stationary contact corresponding to the movable contact, the actuating portion is adapted to swing relative to the fixed portion to close or open with the stationary contact, and the flexible connecting portion connects the actuating portion and the fixed portion and is adapted to bend; the actuating portion of the flexible movable contact is located between the two metal swing arms of the pushing portion; at least a portion of the connection between the actuating portion and the flexible connecting portion of the flexible movable contact is disposed close to the pivot in the swing direction of the metal swing arm.

[0053] Because the moving contact driven by the pushing part is set as a flexible moving contact, its actuating part is located between the two metal swing arms of the pushing part. At least a portion of the connection between its actuating part and the flexible connecting part is positioned close to the pivot axis (i.e., the first axis) in the swing direction of the metal swing arms. This makes the motion trajectory of the connection point closer to the motion trajectory of the point of action on the pushing unit (both are swings around the first axis). This geometric approximation helps maintain better consistency between the swing amplitude of the moving contact's actuating part and the pushing unit, thereby improving the stability of the moving contact's swing and achieving more precise contact alignment. Furthermore, when the pushing unit includes a first elastic element, the consistency of the swing amplitude between the moving contact and the pushing unit prevents the moving contact's actuating part from tilting too much relative to the pushing unit, which could cause the first elastic element to break due to unbalanced forces on both sides, thus improving the operational reliability of the moving contact and the first elastic element.

[0054] In at least one embodiment, at least a portion of the connection between the actuating part and the flexible connecting part of the flexible moving contact is located between the two metal swing arms.

[0055] By positioning at least a portion of the connection between the actuating part and the flexible connecting part of the flexible moving contact between the two metal swing arms, this spatial arrangement ensures that the connection between the actuating part and the flexible connecting part, which is the key active area of ​​the moving contact, moves under the guidance and constraint of the two metal swing arms. Combined with the arrangement of the connection part close to the pivot, this works together to further improve the consistency of the swing amplitude between the actuating part of the moving contact and the pushing unit, making the movement of the moving contact more stable and controllable. It also prevents the actuating part of the moving contact from tilting too much relative to the pushing unit, which could cause the first elastic element to break due to the imbalance of forces on both sides. This is beneficial to improving the accuracy and reliability of contact closure and opening.

[0056] In at least one embodiment, a driving part is further included, the driving part including a motor, the output end of the motor being held at a stop position when the motor stops rotating; the pushing part further includes a rotating member; the rotating member is connected to the output end of the motor to be driven by the motor to rotate around a second axis, and is provided with a first mating part; the pushing unit is provided with a second mating part that slides perpendicular to the second axis and is driven by the rotating member to swing around a first axis parallel to the second axis.

[0057] By introducing a drive section comprising a motor and rotating components, and linking the push unit with the rotating components through specific first and second mating parts, the rotational motion of the motor is converted into the oscillating motion of the push unit. The motor output remains in the stopped position when rotation stops, giving the relay a self-locking capability. This means that after switching to a certain state (e.g., contact closed or open), it can maintain that state without continuous power supply to the motor, ensuring that the push unit can hold the moving contact in a specific position and reducing energy consumption caused by maintaining that position. Compared to some traditional linkage mechanisms, the sliding fit structure between the push unit and the rotating components typically offers advantages such as smaller size, higher motion trajectory accuracy, lower impact force during pushing, and relatively lower requirements for component dimensional accuracy.

[0058] In at least one embodiment, one of the first mating part and the second mating part is a sliding groove extending perpendicular to the second axis, and the other is a sliding pin extending into the sliding groove along the direction of the second axis, wherein the sliding pin is offset relative to the second axis.

[0059] By defining the specific structures of the first and second mating parts as sliding grooves and their corresponding offset sliding pins, this pin-groove mating mechanism can precisely convert the rotational motion of the rotating component into the reciprocating oscillation of the driving unit. Therefore, the sliding trajectory is more accurate, the impact is less, the connection is more compact, the operation is more reliable, and it is less prone to mechanism jamming or reduced relay life due to scraping.

[0060] In at least one embodiment, the moving contact corresponding to the two metal swing arms in the contact portion is a common moving contact, and the common moving contact and the stationary contacts located on both sides of the moving direction of the common moving contact respectively cooperate to form two switches; the pushing unit in the pushing portion pushes the common moving contact to close with the stationary contact on either side, or to form a gap with both stationary contacts.

[0061] By setting the moving contacts corresponding to the two metal swing arms as common moving contacts, and cooperating with the two stationary contacts located on both sides of its operating direction to form two switches, the relay has the function of a changeover switch (single-pole double-throw switch), giving the relay more flexible circuit control capabilities, enabling circuit switching, selection, or conversion between two different circuit paths, thus expanding the application range of the relay. Attached Figure Description

[0062] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0063] Figure 1 This is a three-dimensional structural diagram of the relay in Example 1;

[0064] Figure 2 This is a schematic diagram of the internal structure of the relay in Embodiment 1;

[0065] Figure 3 This is a three-dimensional structural diagram of the relay in Embodiment 1 from another perspective;

[0066] Figure 4 This is a schematic diagram of the internal structure of the relay in Embodiment 1 from another perspective;

[0067] Figure 5 This is a schematic diagram of the relay's X-axis direction in Example 1;

[0068] Figure 6 This is a schematic diagram of the relay's Z-axis direction in Example 1;

[0069] Figure 7 for Figure 6 Schematic diagram of section AA;

[0070] Figure 8 This is a partial structural diagram of the pushing part in Embodiment 1;

[0071] Figure 9 This is a schematic diagram of the Z-axis direction of the pushing part in Embodiment 1;

[0072] Figure 10 This is a partial explosion diagram of the pushing part in Example 1;

[0073] Figure 11 This is a schematic diagram of the limiting part in Embodiment 1;

[0074] Figure 12 This is a schematic diagram of the rotating component in the embodiment;

[0075] Figure 13 This is a partial explosion diagram of the propulsion part in Example 2.

[0076] Explanation of key figure labels:

[0077] Contact portion 100; First switch group 111; Second switch group 112; First switch 121; Second switch 122; Third switch 123; Moving contact 131; Moving contact 132; Pushed part 133; Fixed part 134; Actuating part 135; Flexible connection part 136; Common moving contact 137; Stationary contact 141; Stationary contact 142; Common stationary contact 143;

[0078] Pushing part 200; Rotating part 210; Main shaft 211; Sliding pin 212; Pushing unit 220; Connecting body 221; Pushing body 222; First elastic element 223; First blocking part 224; Second blocking part 225; Pushing part 226; Sliding groove 227; Side wall 228; Overlapping part 229; Pushing body 2210; Embedded part 2211; Metal swing arm 230; Shaft connecting part 231; Extension part 232; Push Moving connection 233; First part 234; Second part 235; Assembly hole 236; Snap-fit ​​interface 237; Mounting base 240; Base body 241; Rotating shaft 242; Limiting part 243; First limiting surface 244; Second limiting surface 245; Journal 246; First assembly 247; Second assembly 248; Fitting groove 249; Connector 2410; Positioning protrusion 2411; Positioning hole 2412; Swing block 250;

[0079] Drive section 300. Detailed Implementation

[0080] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0081] Terminology Definition

[0082] In the claims and description of this utility model, unless otherwise specified, the use of terms such as "first," "second," or "third" is to distinguish different objects, rather than to describe a specific order.

[0083] Unless otherwise specified, in the claims and description of this utility model, the terms "X-axis direction", "Y-axis direction", "Z-axis direction", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation and positional relationship shown in the drawings, and are only for the purpose of simplifying the description, and do not imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation.

[0084] Unless otherwise specified, the terms "fixed connection" or "fixed connection" used in the claims and description of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, that is, including non-removable fixed connection, detachable fixed connection, integral connection, and fixed connection by other devices or components.

[0085] Unless otherwise specified, the use of the terms "comprising," "having," and variations thereof in the claims and description of this utility model is intended to mean "including but not limited to."

[0086] In the claims and description of this utility model, unless otherwise specified, the term "switch" shall be interpreted as: "a switch includes a moving contact and a stationary contact," and should be understood as each switch must have a moving contact and a stationary contact for closing or opening the switch. When two or more switches share a single moving contact (i.e., a common moving contact), the shared moving contact can be closed or opened with the stationary contacts of these switches respectively.

[0087] In the claims and description of this utility model, unless otherwise specified, the term "moving contact" shall be interpreted as: a component that moves entirely or partially by being pushed by a pushed part to close or open with a stationary contact. In this utility model, when "moving contact" is used to describe its position, orientation, or relative relationship with the limiting part, it should be understood to specifically refer to its movable main body, especially its actuating part for contacting the stationary contact.

[0088] In the claims and description of this utility model, unless otherwise specified, the term "static contact" shall be interpreted as: a component that remains fixed in position relative to the movement of the moving contact. In this utility model, when "static contact" is used to describe spatial distribution or relative position with respect to the moving contact, it shall be understood to specifically refer to the portion of the static contact that is in contact with the moving contact.

[0089] In the claims and description of this utility model, unless otherwise specified, the terms "moving direction of the moving contact" and "closing direction of the moving contact" should be interpreted as follows: "moving direction of the moving contact" should be understood as bidirectional, for example, for a common moving contact, it refers to the direction of its reciprocating motion between two stationary contacts. "Closing direction of the moving contact" should be understood as unidirectional, referring to the direction of motion of the moving contact when it moves toward and finally contacts a specific stationary contact. The closing direction is one component of the moving direction. The moving direction or closing direction can be a linear motion direction or a tangential direction of oscillating motion.

[0090] In the claims and description of this utility model, unless otherwise specified, the term "mounting base" shall be interpreted as: a fixed component used to support and provide a rotational reference for two metal swing arms, which may include a base body and a rotating shaft.

[0091] In the claims and description of this utility model, unless otherwise specified, the term "metal swing arm" shall be interpreted as: a pair of sheet-like members made of metal material that can swing about a first axis, used to guide the movement of the push unit and to provide auxiliary support for the push unit.

[0092] In the claims and description of this utility model, unless otherwise specified, the term "rotating shaft" shall be interpreted as: a shaft component used to support the metal swing arm and enable it to rotate, the central axis of which is the first axis.

[0093] In the claims and description of this utility model, unless otherwise specified, the terms "first axis" and "first axial direction" shall be interpreted as follows: "first axis" refers to the central axis around which the two metal swing arms oscillate; "first axial direction" refers to the direction extending along the first axis, which corresponds to the Y-axis direction in the accompanying drawings of this utility model. Furthermore, for ease of description, this utility model defines a three-dimensional coordinate system. The X-axis direction is parallel to the main extension direction of the moving contact from its fixed end or rotation center to its moving contact point. The Y-axis direction is parallel to the extension direction of the first axis and the second axis, and also parallel to and perpendicular to the width direction of the moving contact in the X-axis direction. The Z-axis direction is parallel to and perpendicular to both the X-axis and Y-axis directions, corresponding to the main movement direction when the moving contact and the stationary contact are closed or opened.

[0094] In the claims and description of this utility model, unless otherwise specified, the term "sheet-like member" shall be interpreted as: a member whose thickness is much smaller than its length and width.

[0095] In the claims and description of this utility model, unless otherwise specified, the term "energized portion of the moving contact" shall be interpreted as: the area on the moving contact designed to carry and pass current, mainly including the moving contact on its actuating part and the portion connected thereto located between the moving contact and the fixed part of the moving contact.

[0096] In the claims and description of this utility model, unless otherwise specified, the terms "first part" and "second part" shall be interpreted as: regions on the metal swing arm divided according to their relative positions to the moving contact. The "first part" is the section in the first axial direction opposite to the energized portion of the moving contact, where the distance between the two metal swing arms is relatively large; the "second part" is the section in the first axial direction not opposite to the energized portion of the moving contact, where the distance between the two metal swing arms is relatively small.

[0097] In the claims and description of this utility model, unless otherwise specified, the terms "shaft connection," "extension," and "push connection" shall be interpreted as referring to three functional sections divided along the length of the metal swing arm. The "shaft connection" is the section connected to the rotating shaft; the "extension" is the section extending from the shaft connection, providing space for the moving contact to accommodate and move; and the "push connection" is the section connected to the push unit.

[0098] In the claims and description of this utility model, unless otherwise specified, the term "limiting part" shall be interpreted as: a structure disposed on the mounting base for limiting the axial displacement of the metal swing arm and / or the pushing unit in the first axial direction.

[0099] In the claims and description of this utility model, unless otherwise specified, the terms "first limiting surface" and "second limiting surface" shall be interpreted as: surfaces on the limiting part used for axial positioning. The "first limiting surface" consists of two surfaces arranged facing each other along the first axial direction, used to limit the overall range of motion of the two metal swing arms; the "second limiting surface" consists of two surfaces arranged opposite each other along the first axial direction, cooperating with the first limiting surface for precise positioning of a single metal swing arm.

[0100] In the claims and description of this utility model, unless otherwise specified, the terms "assembly hole" and "clamping interface" shall be interpreted as: a structure on the metal swing arm for elastically engaging with the rotating shaft. "Assembly hole" is a hole through which the rotating shaft passes; "clamping interface" is a slit connecting to the assembly hole and having an opening size smaller than the maximum inner diameter of the assembly hole, allowing the two sides of the metal swing arm clamping interface to elastically open and engage with the rotating shaft.

[0101] In the claims and description of this utility model, unless otherwise specified, the term "elastic snap-fit" shall be interpreted as: a connection method in which a component (such as a metal swing arm with a snap-fit ​​interface) undergoes temporary elastic deformation to pass over a specific part of another component (such as a pivot), and then returns to its original state to achieve locking.

[0102] In the claims and description of this utility model, unless otherwise specified, the term "journey" shall be interpreted as: a section on the shaft with a smaller outer diameter for mating with the mounting hole of the metal swing arm, wherein the stepped surfaces on both sides of the neck can form a limiting surface.

[0103] In the claims and description of this utility model, unless otherwise specified, the term "base" shall be interpreted as: the main body of the mounting base used to support the rotating shaft and other components. In this utility model, the base includes a first fitting and a second fitting that are fixedly connected to each other.

[0104] In the claims and description of this utility model, unless otherwise specified, the terms "first assembly" and "second assembly" shall be interpreted as: two separable components constituting the seat body, which are fixedly connected by fasteners to facilitate the assembly of the pivot and the metal swing arm.

[0105] In the claims and description of this utility model, unless otherwise specified, the term "pushing unit" shall be interpreted as: a collection of components that directly or indirectly push the moving contact member to move. In this utility model, its core components include a pushing member and a first elastic member.

[0106] In the claims and description of this utility model, unless otherwise specified, the term "push member" shall be interpreted as: the core rigid component within the push unit, which carries the functional structures such as the first blocking part and the second blocking part, and is used to transmit the driving force from the drive part, and to provide support for the first elastic member.

[0107] In the claims and description of this utility model, unless otherwise specified, the terms "push body" and "embedded part" shall be interpreted as: two components of different materials constituting the push unit. "Push body" usually refers to the main body made of plastic; "embedded part" refers to a metal component pre-embedded in the push body to enhance the connection strength with the metal swing arm.

[0108] In the claims and description of this utility model, unless otherwise specified, the term "first elastic element" shall be interpreted as: an elastic element (such as a spring) provided in the actuating unit, whose main function is to provide stable and reliable contact pressure to the moving contact through the stored elastic potential energy when the moving contact and the stationary contact are closed.

[0109] In the claims and description of this utility model, unless otherwise specified, the term "first blocking part" should be interpreted as: a structure provided on the pusher member for limiting the separation of the moving contact from the stationary contact due to the electrodynamic repulsive force of the fault current through direct physical contact when the moving contact is closed. Its position is on the side of the moving contact's disconnection direction (the moving contact being away from the corresponding stationary contact) (e.g., above the moving contact). Only with this understanding can the first limiting part contact or approach the moving contact along the closing direction of the moving contact and limit the disconnection distance of the moving contact when the moving contact is closed.

[0110] In the claims and description of this utility model, unless otherwise specified, the term "second blocking part" shall be interpreted as: a structure provided on the pusher for ensuring a reliable disconnection gap between the moving contact and the stationary contact by physical blocking when the moving contact is disconnected, or locking the moving contact in an intermediate isolation position.

[0111] In the claims and description of this utility model, unless otherwise specified, the term "common moving contact" shall be interpreted as: in this utility model, specifically referring to a moving contact shared by at least two switches (forming a first switch group).

[0112] In the claims and description of this utility model, unless otherwise specified, the term "first switch group" shall be interpreted as: a set of at least two switches, wherein these switches share a common moving contact (i.e., a common moving contact), and the stationary contacts of each switch are located on both sides of the direction of action of the common moving contact, so as to realize the function of a changeover switch.

[0113] In the claims and description of this utility model, unless otherwise specified, the term "flexible moving contact" shall be interpreted as: a moving contact that achieves the swinging of the moving part by bending and deforming its own flexible connecting part.

[0114] In the claims and description of this utility model, unless otherwise specified, the terms "fixed part," "moving part," and "flexible connecting part" shall be interpreted as referring to the three parts constituting the flexible moving contact. The "fixed part" is the part that remains fixed relative to the stationary contact; the "moving part" is the part that is adapted to swing relative to the fixed part to close or open with the stationary contact; and the "flexible connecting part" is the flexible part that connects the fixed part and the moving part and provides bending function.

[0115] In the claims and description of this utility model, unless otherwise specified, the term "housing" shall be interpreted as: the outer casing of a relay used to house and protect internal components such as contact parts, actuating parts, and driving parts.

[0116] In the claims and description of this utility model, unless otherwise specified, the term "driving part" shall be interpreted as: a component that receives external signals and generates power to drive the movement of the driving part, which in this utility model includes a motor and a transmission mechanism.

[0117] In the claims and description of this utility model, unless otherwise specified, the term "rotating component" shall be interpreted as: a core rotating component in a transmission mechanism used to convert the power of the driving part into a specific motion (such as oscillation or linear motion), such as a crankshaft or cam.

[0118] In the claims and description of this utility model, unless otherwise specified, the term "second axis" shall be interpreted as: the central axis around which the rotating component rotates under the drive of the motor.

[0119] In the claims and description of this utility model, unless otherwise specified, the terms "first mating part and second mating part" shall be interpreted as: a pair of mutually mating structures respectively disposed on the rotating member and the pushing member, used to transmit the rotational motion of the rotating member into the oscillating or linear motion of the pushing member. For example, one of them may be a sliding pin and the other a sliding groove.

[0120] Example 1

[0121] Example 1 relates to a relay, such as Figure 1As shown, the relay includes a contact portion 100, a push portion 200, a drive portion 300, and a housing. The contact portion 100 is used to control the on / off state of an external circuit or at least one branch thereof. The push portion 200 is used to actuate the contact portion 100 to close or open. The drive portion 300 is used to receive external signals or excitations to drive the push portion 200 to move. The housing houses the contact portion 100, the push portion 200, and the drive portion 300.

[0122] The drive section 300 is the power source for the relay, responsible for receiving external control signals and generating mechanical motion. The push section 200 acts as the transmission hub, precisely transmitting the motion generated by the drive section 300 to the contact section 100. The contact section 100 is the final component for controlling the on / off state of the circuit, and the state of its internal switch is directly controlled by the action of the push section 200.

[0123] The push portion 200 involved in Embodiment 1 is used to push the moving contact 131 in at least one switch in the contact portion 100 of the relay to close or open with the stationary contact 141. Before introducing the push portion 200, the contact portion 100 will be introduced first.

[0124] like Figure 1 As shown, the contact portion 100 includes at least two switches, forming at least two switch groups. Each switch group independently has one switch or at least two switches. Each switch includes a moving contact 131 and a stationary contact 141 for closing or opening the switch. In this embodiment, the contact portion 100 includes three switches: a first switch 121, a second switch 122, and a third switch 123, wherein the third switch 123 can be referred to as... Figure 3 .

[0125] Among them, at least two switches form a first switch group 111. For example... Figure 1 and Figure 2 As shown, in this embodiment, the first switch 121 and the second switch 122 form a first switch group 111. In the first switch group 111, each switch shares a moving contact 131 to form a common moving contact 137. The stationary contacts 141 of each switch are located on both sides of the common moving contact 137 along the direction of movement of the common moving contact 137. In this embodiment, the common moving contact 137 swings in a plane perpendicular to the Y-axis direction, and its effective direction of movement is the Z-axis direction. Therefore, the main direction of movement of the common moving contact 137 can be considered as the Z-axis direction. The stationary contact 141 of the first switch 121 is located on the upper side of the common moving contact 137 along the Z-axis direction, and the stationary contact 141 of the second switch 122 is located on the lower side of the common moving contact 137 along the Z-axis direction.

[0126] Reference Figure 1 , Figure 2 and Figure 7 In the first switch group 111, two stationary contacts 141 are spaced apart along the Z-axis and each has a stationary contact 142. The stationary contacts 142 of the two stationary contacts 141 are symmetrically arranged at a certain distance along the Z-axis. The side of the stationary contacts 142 of the two stationary contacts 141 facing each other is used to cooperate with the moving contact 132 on the common moving contact 137. Moving contacts 132 are respectively provided on both sides of the common moving contact 137 along the Z-axis. The two sets of moving contacts 132 of the common moving contact 137 correspond to the stationary contacts 142 of the two stationary contacts 141. The common moving contact 137, driven by the pushing part 200, can cause one set of its moving contacts 132 to close or open with the corresponding stationary contact 142, or to open with both sets of stationary contacts 142, that is, to make both sets of moving contacts 131 of the common moving contact 137 spaced a certain distance from the corresponding stationary contacts 142.

[0127] In Embodiment 1, the common moving contact 137 adopts a flexible moving contact 131, such as... Figure 1 and Figure 2As shown, the flexible moving contact 131 includes a fixing portion 134, an actuating portion 135, and a flexible connecting portion 136. The fixing portion 134 is fixed relative to each stationary contact 141 and is used to lead out connecting terminals. In this embodiment, the fixing portion 134 of each flexible moving contact 131 extends along the X-axis direction, and is therefore perpendicular to the main movement direction of the moving contact 131, i.e., the Z-axis direction. The actuating portion 135 is adapted to swing relative to the fixing portion 134 along the movement direction of the moving contact 131 to close or open with the stationary contact 141. The flexible connecting portion 136 connects the fixing portion 134 and the actuating portion 135 and is adapted to bend. In this embodiment, the flexible moving contact 131 is made of a laminated metal sheet. Specifically, the two ends of the laminated metal sheet are welded to the fixing portion 134 and the actuating portion 135 respectively, or the two ends of the laminated metal sheet are bonded, pressed, or fused to form the fixing portion 134 and the actuating portion 135, and the middle portion of the laminated metal sheet forms the flexible connecting portion 136. In this embodiment, the common moving contact 137, which serves as the flexible moving contact 131, has two ends of its flexible connecting portion 136 located at different positions along the movement direction of the common moving contact 137, particularly the main movement direction Z-axis. One end of the flexible connecting portion 136 connected to the moving portion 135 is located along the Z-axis between the stationary contact 141 of the first switch 121 and the stationary contact 141 of the second switch 122. The other end of the flexible connecting portion 136 connected to the fixed portion 134 is located along the Z-axis below the end of the flexible connecting portion 136 connected to the moving portion 135. The moving portion 135 extends along the X-axis in the open state; that is, in the open state, the extension direction of the moving portion 135 is the length direction of the moving contact 131. The moving portion 135 can be connected to the pushing portion 200, allowing the moving contact 131 to be driven by the pushing portion 200, causing the moving portion 135 to swing relative to the fixed portion 134. The moving contact point 132 of the moving contact 131 is located on the moving portion 135.

[0128] Reference Figure 1 and Figure 2The actuating portion 135 of the movable contact 131 has a certain width, with the width direction of the actuating portion 135 being the Y-axis direction. A pushed portion 133 is formed at the end of the actuating portion 135 opposite to the flexible connecting portion 136 along the X-axis direction. The pushed portion 133 and the movable contact 132 of the movable contact 131 are arranged in the X-axis direction. The pushed portion 133 is connected to the pushing portion 200. On the actuating portion 135, the width of the pushed portion 133 is smaller than the width of the portion used to set the movable contact 132, and the pushed portion 133 is approximately located at the middle position in the width direction of the actuating portion 135. Of course, it is worth noting that in some possible embodiments, the part of the movable contact 131 that is connected to the pushing part 200 can also be directly formed by the part of the actuating part 135 that is correspondingly installed with the movable contact 132. In this case, the actuating part 135 does not need to extend other parts to form the pushed part. In order to ensure the current carrying capacity of the movable contact 131, the width of the actuating part 135 can be consistent with the width of other parts of the movable contact 131 used for current carrying and ensure a uniform width at each position, without needing to reduce it at local positions.

[0129] Reference Figure 3 and Figure 4 The contact portion 100 also has a second switch group 112 formed by a switch, which is a third switch 123. The third switch 123 uses the same flexible moving contact 131 as the two switches in the first switch group 111, except that the moving contact 131 is not used as a common moving contact 137. The stationary contact 141 of the third switch 123 is located below the moving contact 131 along the Z-axis, and the stationary contact 142 and the moving contact 132 are positioned opposite each other.

[0130] In Embodiment 1, the first switch group 111 and the second switch group 112 share a single stationary contact 141. Specifically, the first switch 121 in the first switch group 111 and the third switch 123 in the second switch group 112 share a single stationary contact 141, which is a common stationary contact 143. (Refer to...) Figure 5The common stationary contact 143 is provided with stationary contact points 142 corresponding to the first switch 121 and the third switch 123 respectively, wherein the stationary contact point 142 of the first switch 121 is downward along the Z-axis direction, and the stationary contact point 142 of the third switch 123 is upward along the Z-axis direction. Simultaneously, as an electrical implementation, the swing direction of the common moving contact 137 in the first switch group 111 and the moving contact 131 in the second switch group 112 is consistent with that of the actuating part 135 of the common moving contact 137. That is, when the actuating part 135 of the common moving contact 137 is raised along the Z-axis, the actuating part 135 of the moving contact 131 of the third switch 123 is also raised along the Z-axis. At this time, the first switch 121 is closed and the third switch 123 is open. Conversely, when the actuating part 135 of the common moving contact 137 is lowered along the Z-axis, the actuating part 135 of the moving contact 131 of the third switch 123 is also lowered along the Z-axis. At this time, the first switch 121 is open, the second switch 122 is engaged, and the third switch 123 is engaged. There is also a state where both the first switch 121 and the second switch 122 are open, and the third switch 123 is also open. In Embodiment 1, the state where the first switch 121 is closed is set as the first state, the state where only the second switch 122 and the third switch 123 are closed is set as the second state, and the state where the first switch 121, the second switch 122, and the third switch 123 are all open is set as the third state. For example... Figure 6 and Figure 7 As shown, at this time, the moving contact 132 of the moving contact 131 is not in contact with the stationary contact 142 of the stationary contact 141 of the first switch 121 and the second switch 122, and the relay is in the third state.

[0131] In this embodiment, the contact portion 100 includes at least two switches, the length directions of each movable contact 131 are parallel to each other in a preset projection plane, and the swing ends of at least two adjacent movable contacts 131 are located at the same end or different ends in their length directions. (Refer to...) Figures 1 to 4 The first switch group 111 and the second switch group 112 each include two moving contacts 131. Each moving contact 131 has a fixed portion 134, a flexible connecting portion 136, and an actuating portion 135. The length direction of the moving contact 131 can be considered as the extension direction of the fixed portion 134 and the actuating portion 135, which is the X-axis direction in Embodiment 1. The actuating portion 135 of the moving contact 131 is the swing end of the moving contact 131. In Embodiment 1, the fixed portion 134 of the moving contact 131 in the first switch group 111 is located at the first end in the X-axis direction, and the actuating portion 135 is located at the second end in the X-axis direction. In the second switch group 112, the fixed portion 134 of the moving contact 131 is located at the second end in the X-axis direction, and the actuating portion 135 is located at the first end in the X-axis direction. Thus, in Embodiment 1, the swing ends of two adjacent moving contacts 131 are located at different ends in their length directions. Of course, in other embodiments, the swing ends of two adjacent moving contacts 131 can also be located at the same end in their length directions.

[0132] The actuating part 200 includes at least two rotating members 210, each of which is driven by a drive output terminal of the driving part 300 to respectively drive the moving contact 131 and the stationary contact 141 in each switch group (such as the first switch group 111 and the second switch group 122) to close or open. The structure of the actuating part 200 is described below.

[0133] like Figure 1 and Figure 2 As shown, the actuating part 200 includes a mounting base 240, two metal swing arms 230 and a actuating unit 220.

[0134] Reference Figure 1 The mounting base 240 includes a base body 241 and a rotating shaft 242, as shown in the reference. Figure 7 The mounting base 240 also includes a connector 2410. (See reference...) Figure 1 The base 241 includes a first fitting 247 and a second fitting 248. The mounting base 240 is fixed or at least partially formed in the housing. In the first embodiment, the first fitting 247 in the base 241 is fixed in the housing.

[0135] In this embodiment, the first assembly 247 in the base 241 is made of plastic, the rotating shaft 242 can be made of plastic or metal, and the connector 2410 is made of metal. The stationary contact 141 of the contact portion 100 can be integrally molded with the first assembly 247 by insert injection molding, and the connector 2410 can also be integrally molded with the first assembly 247 by insert injection molding. The connector 2410 is used to fix the moving contact 131, and the connector 2410 is connected to the fixing part 134 of the moving contact 131. In this embodiment, the first assembly 24 serves as a mounting base for the contact portion. As a feasible method, the connector 2410 and the moving contact 131 can be fixed by riveting. Furthermore, the relay is connected to an external circuit via a connection terminal (not shown in the figure). In Embodiment 1, the connector 2410 can be a conductive metal, and the connection terminal electrically connected to the moving contact 131 can be formed or disposed on the connector 152. The direction in which the connection terminal leads out of the relay can be arbitrarily set as needed. At the same time, the connection terminal electrically connected to the stationary contact 141 can be directly formed or disposed on the stationary contact 141, and can be led out of the housing in any direction as needed.

[0136] The second mounting component 248 in the base 241 can also be made of plastic or metal. It is a long strip-shaped component with a through hole running through it along its thickness direction. Fasteners can pass through this through hole to secure the second mounting component 248 to the first mounting component 247. (Refer to...) Figure 1At the location where the first assembly 247 is used to install the second assembly 248, a fitting groove 249 adapted to at least a portion of the shape and size of the second assembly 248 is provided. When the second assembly 248 is fixed to the first assembly 247, the second assembly 248 can be fitted into the first assembly 247 along the Y-axis direction, and then fixed by fasteners. In another possible example, one of the first assembly 247 and the second assembly 248 is provided with a positioning protrusion 2411 extending along a first axial direction, and the other is provided with a positioning hole 2412 that can be fitted and inserted into the positioning protrusion 2411, such as... Figure 1 and Figure 2 As shown, the bottom of the interlocking groove 249 is provided with a positioning protrusion 2411, and the second assembly 248 is provided with a positioning hole 2412. The aforementioned interlocking groove 249, positioning protrusion 2411, and positioning hole 2412 all enable at least a portion of the first assembly 247 and the second assembly 248 to form an interlocking relationship along the first axial direction. The interlocking groove 249, positioning protrusion 2411, and positioning hole 2412 not only reliably position and prevent rotation of the second assembly 248, allowing it to be secured with only one fastener, simplifying the installation structure; furthermore, the interlocking groove 249 also prevents the second assembly 248 from protruding beyond the surface of the first assembly 247, thus preventing an increase in the overall structural dimensions.

[0137] Furthermore, both the first mounting component 247 and the second mounting component 248 are provided with a shaft hole along the Y-axis direction. This shaft hole allows both ends of the rotating shaft 242 to pass through and form a pivotal fit, thereby enabling the rotating shaft 242 to be assembled to the base 241. In Embodiment 1, the rotating shaft 242 is independently set and assembled to the base 241. In other embodiments, the rotating shaft 242 can be directly formed on the base 241 or directly formed on the metal swing arm 230.

[0138] Reference Figure 1 and Figure 2 Two metal swing arms 230 are positioned on either side of at least one movable contact 131 along a first axial direction and are rotatably connected to the mounting base 240 via a pivot 242 to swing around a first axis. The extension direction of the first axis is the first axial direction. In Embodiment 1, two metal swing arms 230 are provided at the common movable contact 137 of the first switch group 111. These two metal swing arms 230 can cooperate with the push unit 220 to limit the movement trajectory of the push unit 220, thereby limiting the swing trajectory of the moving part 135 of the common movable contact 137 through the push unit 220. The first axial direction is the Y-axis direction in the attached figure, and the position of the pivot 242 and its central axis define the first axial direction.

[0139] In Embodiment 1, the rotating shaft 242 is preferably made of metal, and the metal swing arm 230 is pivotally connected to the rotating shaft 242. That is, there is a pivotal connection between the rotating shaft 242 and the metal swing arm 230, and both the rotating shaft 242 and the metal swing arm 230 are independent components. Both the rotating shaft 242 and the metal swing arm 230 can be made of stainless steel.

[0140] Reference Figure 8 and Figure 9 The metal swing arm 230 is a sheet-like component with a predetermined thickness, the thickness direction of which is parallel to the first axial direction. The width direction of the metal swing arm 230 is parallel to the Z-axis direction, and its length direction is parallel to the X-axis direction. The width of the metal swing arm 230 is much greater than its thickness, and its length is much greater than its width. Two metal swing arms 230 are arranged along the Y-axis direction, forming a space between them for the common moving contact 137 to be placed or moved.

[0141] Reference Figure 8 and Figure 9 The metal swing arm 230 includes a first part 234 and a second part 235. The first part 234 is axially aligned with at least a portion of the energized portion of the movable contact 131, while the second part 235 is not axially aligned with the energized portion of the movable contact 131. The distance between the first parts 234 of the two metal swing arms 230 in the first axial direction is greater than the distance between the corresponding second parts 235 of the two metal swing arms 230 in the first axial direction. Specifically, the metal swing arm 230 is provided with a shaft connecting part 231, an extension part 232, and a push connecting part 233 in sequence along its length. The shaft connecting part 231 is connected to the rotating shaft 242, and the push connecting part 233 is connected to the push unit 220. The extension part 232 forms the first part 234, and at least the shaft connecting part 231 forms the second part 235. In Embodiment 1, the metal swing arm 230 starts from its shaft connection 231, extends forward to the first turning position, then turns outward and continues to extend forward to form an extension 232. The extension 232 extends forward a considerable distance, reaches the second turning position, turns inward and continues to extend forward to form a push connection 233. Figure 9 As can be seen, the extension 232 serves as the first part 234 of the metal swing arm 230, and the shaft connection 231 and the push connection 233 both serve as the second part 235 of the metal swing arm 230. The distance between the extensions 232 of the two metal swing arms 230 is greater than the distance between the shaft connection 231 and the distance between the push connection 233.

[0142] Mounting base 240 is provided with limiting part 243, which includes two limiting surfaces arranged facing each other and / or back to each other along the first axis. The two limiting surfaces are adapted to form a limiting engagement with metal swing arm 230 and / or push unit 220 along the first axis to restrict the movement of the metal swing arm 230 and push unit 220 as a whole in the first axis.

[0143] Among them, reference Figure 9 The limiting part 243 is provided corresponding to the assembly position of the two metal swing arms 230, and has two first limiting surfaces 244 arranged facing each other along the first axial direction. The two first limiting surfaces 244 respectively cooperate with the two metal swing arms 230 to limit the movement of the two metal swing arms 230 in the first axial direction. In Embodiment 1, one end of the rotating shaft 242 is assembled to the first assembly 247, and the other end is assembled to the second assembly 248, and the first assembly 247 and the second assembly 248 are respectively provided with a first limiting surface 244. At least one metal swing arm 230 is sleeved on the rotating shaft 242 from the end of the rotating shaft 242 near the second assembly 248. In Embodiment 1, referring to Figure 1 The first assembly 247 has a shaft hole extending along the Y-axis, and the second assembly 248 has a shaft hole penetrating along the Y-axis. One end of the rotating shaft 242 in the Y-axis direction is inserted into the shaft hole on the first assembly 247, and the other end in the Y-axis direction is inserted into the shaft hole on the second assembly 248. (Refer to...) Figure 11 One first limiting surface 244 is disposed on the first assembly 247, and the other first limiting surface 244 is disposed on the second assembly 248. The two first limiting surfaces 244 are disposed opposite each other along the Y-axis and are both perpendicular to the Y-axis. (Refer to...) Figure 9 Along the Y-axis, a metal swing arm 230 located on the outer side relative to the common moving contact 137 is sleeved onto the rotating shaft 242 from the end near the second assembly 248. During assembly, first align the shaft hole of the metal swing arm 230 located on the inner side relative to the common moving contact 137 with the shaft hole on the first assembly 247. Then, pass one end of the rotating shaft 242 through the shaft hole on the metal swing arm 230 and the first assembly 247. Next, fit the shaft hole of the outer metal swing arm 230 into the rotating shaft 242. Then, fit the shaft hole of the second assembly 248 into the rotating shaft 242. Finally, fix the second assembly 248 to the first assembly 247 with fasteners.

[0144] See also Figure 10 and Figure 11The limiting part 243 also has two second limiting surfaces 245 arranged opposite to each other along the first axial direction, and the two second limiting surfaces 245 are located between the two first limiting surfaces 244 along the first axial direction. Furthermore, the two metal swing arms 230 are respectively located between one set of opposing first limiting surfaces 244 and second limiting surfaces 245 for positioning along the first axial direction. In Embodiment 1, the outer diameter of the two ends of the rotating shaft 242 along the Y-axis direction is smaller, and the outer diameter of the middle part is larger, forming a stepped shaft. A stepped structure is formed at both ends of the rotating shaft 242, and the stepped surface perpendicular to the Y-axis direction in this stepped structure forms the aforementioned second limiting surfaces 245. The dimensions of the shaft holes on the metal swing arm 230, the first mounting part 247, and the second mounting part 248 are adapted to the dimensions of the smaller outer diameter portions at both ends of the rotating shaft 242. When the metal swing arm 230 is assembled onto the rotating shaft 242, the sidewall 228 surface of the metal swing arm 230 facing the second limiting surface 245 abuts against the second limiting surface 245 on the rotating shaft 242. Simultaneously, the first limiting surface 244 on the first mounting part 247 or the second mounting part 248 abuts against the sidewall 228 surface on the other side of the metal swing arm 230. Thus, the first limiting surface 244 and the second limiting surface 245 form a limiting part 243, restricting the movement of the two metal swing arms 230 in the Y-axis direction to a very small range without affecting the normal movement of the metal swing arms 230. (Refer to...) Figure 9 The limiting part 243 only cooperates with the shaft connection part 231 of the metal swing arm 230.

[0145] It is understood that in Embodiment 1, the limiting part 243 is formed by the cooperation of the rotating shaft 242 and the base 241. In other embodiments, the limiting part 243 may be entirely provided on the rotating shaft 242 or entirely provided on the base 241.

[0146] Reference Figures 1 to 4 The pushing part 200 also includes two pushing units 220 and two rotating parts 210. The two pushing units 220 are respectively arranged corresponding to the first switch group 111 and the second switch group 112. The pushing unit 220 includes a pushing member 226 and a first elastic member 223. The pushing member 226 includes a pushing body 222 and a connecting body 221. The pushing unit 220 corresponding to the first switch group 111 is connected to the two metal swing arms 230 and can swing relative to the mounting base 240 around the first axis, and is used to push the moving contact 131 corresponding to the position of the two metal swing arms 230. The pushing unit 220 can be driven by the driving part 300 to move, and the overall movement of the pushing unit 220 can be swinging. The first elastic member 223 is arranged corresponding to the closing direction of the moving contact 131 and is placed between the pushing member 226 and the moving contact 131, so as to provide the moving contact 131 with the contact pressure of closing with the stationary contact 141 when the moving contact 131 closes with the stationary contact 141.

[0147] In Embodiment 1, the structures of the push units 220 used in the first switch group 111 and the second switch group 112 are different, but both push units 220 swing along a predetermined direction, and the Y-axis direction is perpendicular to the tangent of the direction of movement at at least one position where the push unit 220 moves along the predetermined direction. The metal swing arm 230 involved in the embodiments of this application can be used to connect to the push unit 220 corresponding to the first switch group 111, and it can also be used to connect to the push unit 220 corresponding to the second switch group 112. In the example of Embodiment 1, only the push unit 220 corresponding to the first switch group 111 is connected to the metal swing arm 230. The motion trajectory of the pushing unit 220 is an arc. When the swing amplitude of the pushing unit 220 is small, the effective stroke direction for driving the moving contact 131 is in the Z-axis direction. When the moving contact 131 is in the third state, that is, when the moving part 135 of the moving contact 131 extends approximately along the X-axis direction, the pushing unit 220 is approximately at the midpoint of its motion trajectory. The tangent of the motion trajectory is perpendicular to the X-axis direction, that is, the tangent is along the Z-axis direction.

[0148] First, the driving unit 220 and its auxiliary structures in the first switch group 111 will be described. (Refer to...) Figure 1 and Figure 2 In the first switch group 111, a pusher 226 is used to switch the state of the first switch 121 and the second switch 122. The pusher 226 includes a pusher body 222 and a connecting body 221. The pusher body 222 abuts against the first elastic member 223 along the Z-axis. The pusher body 222 and the pushed portion 133 of the common moving contact 137 can be provided with a sleeve post for engaging with the first elastic member 223. The two ends of the spring-shaped first elastic member 223 can be sleeved to the sleeve post to prevent the first elastic member 223 from disengaging from the pusher body 222. The pusher body 222 can drive the moving portion 135 of the common moving contact 137 to swing by applying force through the first elastic member 223. The connecting body 221 can be integrally formed with the pusher body 222 or separately fixed. The connecting body 221 can cooperate with the rotating member 210 to make the pusher unit 220 move as a whole. The pusher body 222 has sidewalls 228 perpendicular to the Y-axis on both sides in the Y-axis direction. The pusher 222 also has a bottom wall and a top wall in the Z-axis direction. The bottom wall, top wall, and two side walls 228 enclose the pusher 222 to form a frame-like structure. The connecting body 221 is located above the top wall of the pusher 222 along the Z-axis direction.

[0149] Reference Figure 1 and Figure 2The push unit 220 in the first switch group 111 swings relative to the mounting base 240 via the aforementioned metal swing arm 230 and rotating shaft 242. The push connection 233 is connected to the side wall 228 of the push body 222. (Refer to...) Figure 8 The pushing body 222 includes a pushing body 2210 and an embedded part 2211. The pushing body 2210 and the connecting body 221 are integrally formed and are both made of plastic. The embedded part 2211 can be made of metal. The pushing body 2210 and the embedded part 2211 are integrated by injection molding. The two metal swing arms 230 are fixedly connected to the embedded part 2211 by riveting, screwing, or welding, thereby achieving a fixed connection between the metal swing arms 230 and the pushing part 226. Alternatively, in other embodiments, the pushing part 226 in the pushing unit 220 can be entirely made of plastic and can be fixedly connected to the two metal swing arms 230 as a whole by injection molding, riveting, screwing, or bonding.

[0150] Reference Figure 1 and Figure 2 The rotating member 210 is provided with a first mating portion, which can be driven by the driving portion 300 to rotate about a second axis parallel to the first axis. The pushing member 226 is provided with a second mating portion that slides in a direction perpendicular to the second axis with the first mating portion, so that it can swing about the first axis parallel to the second axis driven by the rotating member 210. Furthermore, when the pushing unit 220 pushes at least one moving contact 131 to close with the stationary contact 141, the direction of the force exerted by the second mating portion on the first mating portion passes through or is close to the second axis. One of the first and second mating portions is a sliding groove 227 extending perpendicular to the second axis, and the other is a sliding pin 212 extending into the sliding groove 227 along the second axis direction, the sliding pin 212 being offset relative to the second axis. In Embodiment 1, a sliding pin 212 is provided on the rotating member 210, and a sliding groove 227 is provided on the connecting body 221. (Refer to...) Figure 7 and Figure 8 The sliding groove 227 provided on the connecting body 221 extends along the X-axis direction, and its extension length is slightly larger than the diameter of the circle formed by the rotation of the sliding pin 212. (Refer to...) Figure 12 The rotating member 210 includes a main shaft 211 connected to the driving part 300 and a sliding pin 212 eccentrically disposed relative to the main shaft 211. The dotted line passing through the main shaft 211 of the rotating member 210 along the Y-axis direction is the second axis. With the rotation of the rotating member 210, the sliding pin 212 slides in the sliding groove 227 and applies force to the pushing member 226. The pushing member 226, constrained by the metal swing arm 230 and the rotating shaft 242, swings approximately in the Z-axis direction, thereby causing the actuating part 135 of the common moving contact 137 to swing. For example, the sliding pin 212 rotates with the rotating member 210 to... Figure 7As shown in the diagram, the common moving contact 137 is disconnected from both stationary contacts 141. Then, the rotating member 210 rotates 90° clockwise, causing the sliding pin 212 to swing 90° around the second axis. The sliding pin 212 is at its highest position along the Z-axis. At this point, the actuating part 135 of the common moving contact 137 swings upward, and the moving contact 132 located above the actuating part 135 along the Z-axis contacts the stationary contact 142 located above the common moving contact 137 along the Z-axis, closing the first switch 121. Afterward, the rotating member 210 rotates 90° counterclockwise, and the common moving contact 137 returns to its third state position. Then the rotating part 210 rotates 90° counterclockwise, and the sliding pin 212 swings 90° around the second axis. The sliding pin 212 is at the lowest position along the Z-axis. At this time, the moving part 135 of the common moving contact 137 swings downward, and the moving contact 132 located on the lower side of the moving part 135 along the Z-axis contacts the stationary contact 142 located on the lower side of the common moving contact 137 along the Z-axis, thus closing the second switch 122.

[0151] Furthermore, when the sliding pin 212 is at its highest and lowest positions in the Z-axis direction, that is, when the pushing unit 220 pushes the common moving contact 137 to close with any of the stationary contacts 141, the direction of the force exerted by the sliding groove 227 on the sliding pin 212 is vertical and actually passes through the second axis. Considering operational errors, the force exerted by the sliding groove 227 on the sliding pin 212 can also be considered to be close to the second axis. The force exerted by the sliding groove 227 on the sliding pin 212 here is a positive or negative force formed by the pushing unit 220 as a whole on the moving contact 131 and then on the rotating member 210. The negative force occurs when an electric repulsive force occurs when the switch is closed.

[0152] Reference Figure 1 and Figure 2 The first switch group 111 includes a first switch 121 and a second switch 122 sharing a common moving contact 137. Therefore, it includes two first elastic elements 223, which are located above and below the pushed portion 133 of the common moving contact 137 along the Z-axis, respectively, and abut against the pushed portion 133. The first elastic elements 223 are springs. Connecting posts for engaging with the first elastic elements 223 can be provided on the pushed portion 133 of the common moving contact 137 and the pushing body 222 to ensure the stability of the first elastic elements 223. The abutment positions of the two first elastic elements 223 against the pushing body 222 are the bottom wall and the top wall, respectively, allowing the pushing member 226 to apply force to the common moving contact 137 along the Z-axis using the first elastic elements 223. Furthermore, since two first elastic elements 223 are provided in the first switch group 111, the closing of the first switch 121 and the second switch 122 can achieve the overtravel closing effect through the first elastic elements 223.

[0153] Next, the actuation unit 220 and its associated structures in the second switch group 112 will be described. (Refer to...) Figure 3 and Figure 4 The actuating unit 220 in the second switch group 112 achieves the state switching of the third switch 123 through a actuating member 226. The actuating member 226 includes a actuating body 222 and a connecting body 221. Unlike the actuating unit 220 in the first switch group 111, since the moving contact 131 in the third switch 123 has only one closing direction, the actuating unit 220 only has one first elastic member 223. Furthermore, the actuating body 222 does not have a bottom wall. The upper end of the first elastic member 223 is connected to the top wall of the actuating body 222 in a pushing manner, and the lower end is connected to the actuating part 135 of the moving contact 131 in a pushing manner. Simultaneously, the actuating body 222 is provided with an overlapping portion 229, which is a flange structure where the bottom edges of the two side walls 228 of the actuating body 222 extend towards each other along the Y-axis. The actuating part 135 of the moving contact 131 will overlap the overlapping part 229 under the force of the first elastic member 223. However, after the pushing unit 220 pushes the actuating part 135 of the moving contact 131 to swing downward along the Z-axis until the third switch 123 is closed, the actuating part 135 of the moving contact 131 will leave the overlapping part 229 and achieve an overtravel closing effect under the action of the first elastic member 223. The cooperation structure and relative motion law of the rotating member 210 and the connecting body 221 in the second switch group 112 are the same as those in the first switch group 111, and will not be described in detail here. In other embodiments, the overlapping part 229 can also be set as a bottom wall connected to the bottom edge of the two side walls 228 along the Z-axis. The bottom wall forms a through hole along the Z-axis for avoidance corresponding to the moving contact 132, so that the moving contact 132 can contact the corresponding stationary contact 142 through the through hole.

[0154] In addition, refer to Figure 3 and Figure 4 The push unit 220 in the second switch group 112 is connected to the mounting base 240 by a swing block 250 and a rotating shaft 242. Since the moving contact 131 in the second switch group 112 is not used as the common moving contact 137, the swing block 250 can be a solid flat plate extending a certain length along the X-axis, with its width approximately the same as the width of the moving contact 131. One end of the block can be connected to the push member 226 of the second switch group 112, or the two can be integrally formed. The other end is pivotally connected to a rotating shaft 242, which is then pivotally connected to the first mounting part 247.

[0155] Reference Figure 1 and Figure 2The positions of the common moving contact 137 and the metal swing arm 230 in the first switch group 111 are further defined. The common moving contact 137 is a flexible moving contact 131, with its actuating part 135 located between the two metal swing arms 230 of the pushing part 200. At least a portion of the connection between the actuating part 135 of the flexible moving contact 131 and the flexible connecting part 136 is positioned close to the pivot axis 242 in the swing direction of the metal swing arm 230. Specifically, the swing of the actuating part 135 of the flexible moving contact 131 relative to its fixed part 134 is centered on the curved area of ​​the flexible connecting part 136. By positioning this pivot axis, i.e., the connection between the actuating part 135 and the flexible connecting part 136, close to the pivot axis 242 of the metal swing arm 230 in the horizontal direction, the trajectory of this pivot axis is geometrically more closely matched to the trajectory of the point of action on the pushing unit 220, since both are swinging around the same axis. This configuration ensures that the actuating part 135 of the moving contact 131 maintains the same swing amplitude as the pushing unit 220, thereby ensuring that the first elastic element 223 in the pushing unit 220 is subjected to uniform force, preventing it from disengaging from the preset position due to unbalanced force, and thus improving the reliability of the relay operation.

[0156] Furthermore, at least a portion of the connection between the actuating part 135 and the flexible connecting part 136 of the flexible movable contact 131 is located between the two metal swing arms 230. In Embodiment 1, the extensions 232 of the two metal swing arms 230 are spaced apart by a certain distance in an axial direction perpendicular to the swing direction, forming a receiving space. The actuating part 135 of the flexible movable contact 131 and its connection area with the flexible connecting part 136 are both arranged within this receiving space.

[0157] Reference Figure 1 and Figure 3 The drive unit 300 includes a motor, the output of which remains in a stopped position when the motor stops rotating; a rotating member 210 is connected to the output of the motor to rotate about a second axis under the drive of the motor. Specifically, the motor with a locking function can be a stepper motor or a DC motor with a built-in brake. When the motor drives the rotating member 210 to move the pusher 226 to a predetermined closed or open position, even in a power-off state, the motor's own stepping holding torque or mechanical brake can prevent the rotating member 210 from rotating unexpectedly.

[0158] Reference Figure 7 and Figure 8 The pusher 226 is provided with a first blocking portion 224, which is arranged corresponding to the closing direction of the moving contact 131 and extends a predetermined length along the Y-axis direction. This blocking portion 224 contacts or approaches the moving contact 131 along the closing direction of the moving contact 131 when it closes with the stationary contact 141, thus limiting the distance at which the moving contact 131 separates from the stationary contact 141. (Refer to...) Figure 4 and Figure 7 For the two different pushers 222, the number and structure of the first blocking parts 224 are different. The pusher 222 of the first switch group 111 has two first blocking parts 224 located on both sides of the common moving contact 137 along the Z-axis direction. The pusher 222 of the second switch group 112 has one first blocking part 224 located above its moving contact 131 in the Z-axis direction. The first blocking part 224 can be integrally formed on the pusher 222.

[0159] The first blocking part 224 extends a predetermined length along the Y-axis, which can be in two ways. The first way is referred to... Figure 4 The inner side wall 228 of the pusher 222 has first limiting portions 224 on both sides in the Y-axis direction. These first limiting portions 224, when in the closed state, cooperate with the actuating part 135 of the movable contact 131 to limit the swing range of the movable contact 131. These first limiting portions 224 have two independent parts, both formed on the pusher 222 and having a certain thickness in the Y-axis direction. In other words, the first limiting portions 224 extend a predetermined length in the first direction. It should be understood that... Figure 4 In the provided example, the pushing body 222 includes two parts (defined as the first pushing part and the second pushing part, respectively). The first pushing part is fixedly connected to the connecting body 221. For example, both the first pushing part and the connecting body 221 are made of plastic and molded as one piece, and are used for the first elastic member 223 to abut against. The second pushing part has two connecting walls and a bottom wall. The two connecting walls are spaced apart along the Y-axis and are fixedly connected to the two sides of the first pushing part along the Y-axis to form two side walls 228. The bottom wall is connected to the bottom edge of the two connecting walls along the Z-axis to form an overlap 229. The second case can be referred to. Figure 7 and Figure 8 The portion of the pusher 222 between its two sidewalls 228 along the Y-axis forms a wall-like structure extending a considerable distance along the Y-axis. This wall-like structure forms a first blocking portion 224 extending a predetermined length along the Y-axis. Furthermore, in the second case, the two edges of the wall-like first blocking portion 224 in the Y-axis direction can be correspondingly connected to the two sidewalls 228 of the pusher 222, that is, the first blocking portion 224 blocks part of the opening in the X-axis direction of the pusher 222 that was originally formed by the sidewalls 228, the top wall, and the bottom wall.

[0160] Based on the above, it can be understood that, referring to Figure 7 and Figure 8In this embodiment, the pusher 226 has sidewalls 228 on both sides of the movable contact 131 in the first direction, and the first limiting part 224 is disposed between the two sidewalls 228 along the first direction. The first limiting part 224 has a wall-like structure, and its two edges in the first direction are respectively connected to the two sidewalls 228. Alternatively, as in the second switch group 112, the first limiting part 224 may also be perpendicular to or at an angle to the first direction.

[0161] It should be noted that although the first blocking part 224 is limited to a preset length along the Y-axis, this only indicates that the first blocking part 224 as a whole has an extending tendency in the Y-axis direction, and does not mean that the first blocking part 224 can only extend along the Y-axis direction. For example, the first blocking part 224 can extend at an angle relative to the Y-axis direction, but as a whole it still extends in the Y-axis direction, and it has an extension component along the Y-axis direction.

[0162] In the first embodiment, the first blocking part 224 provided on the pusher 226 in the first switch group 111 extends in the shape of a wall and is located between the moving contact 132 and the pushed part 133 of the common moving contact 137 along the X-axis direction. The pusher 226 is provided with the first blocking part 224 on both sides of the stationary contact 141 in both closing directions of the common moving contact 137.

[0163] In a preferred embodiment, when the moving contact 131 is in one of the disconnected positions separated from the stationary contact 141, at least a portion of the extended surface of the first blocking portion 224 (e.g., one side surface of the first limiting portion 224 along the X-axis) forms an angle with a reference plane defined by the Y-axis and Z-axis directions. That is, the extended surface of the wall-shaped first blocking portion 224 can be set to be tilted at a certain angle relative to the reference plane. For example, if the first blocking portion 224 is located above the moving contact 131 along the Z-axis, the projection of the lower edge of the first blocking portion 224 in the direction perpendicular to the Z-axis is a straight line with a certain angle to the Y-axis.

[0164] Alternatively, when the moving contact 131 is in one of the disconnected positions separated from the stationary contact 141, at least a portion of the extension surface of the first blocking portion 224 is perpendicular to the X-axis direction. That is... Figure 7 The structure shown, taking the first blocking part 224 located above the moving contact 131 along the Z-axis as an example, has the projection of the lower edge of the first blocking part 224 in the direction perpendicular to the Z-axis as a straight line parallel to the Y-axis.

[0165] Furthermore, the pusher 226 of the first switch assembly 111 is also provided with a second blocking portion 225, which is arranged corresponding to the closing direction of the common moving contact 137. When the pusher 226 drives the common moving contact 137 to disconnect from the stationary contact 141 on either side, the second blocking portion 225 blocks the movement of the common moving contact 137 along the closing direction toward the stationary contact 141 on that side, thereby ensuring that the common moving contact 137 disconnects from the stationary contact 141 on that side. In Embodiment 1, the first blocking portion 224 of the common moving contact 137 corresponding to any closing direction is the same as the second blocking portion 225 corresponding to the other closing direction.

[0166] Example 2

[0167] The difference between Embodiment 2 and Embodiment 1 is that the metal swing arm 230 and the rotating shaft 242 are matched differently.

[0168] Reference Figure 13 The metal swing arm 230 has a mounting hole 236 at its end, and a snap-fit ​​interface 237 with an opening size smaller than the maximum inner diameter of the mounting hole 236 is provided on the periphery of the mounting hole 236. The metal swing arm 230 is elastically snapped into the mounting hole 236 and the rotating shaft 242 through the snap-fit ​​interface 237. Specifically, the rotating shaft 242 has a journal 246 with a relatively small outer diameter compared to other positions; the mounting hole 236 of the metal swing arm 230 is elastically snapped into the journal 246; the journal 246 forms a first limiting surface 244 and a second limiting surface 245 corresponding to the position of the limiting part 243 on the two inner sidewalls 228 surfaces along the first axial direction.

[0169] In the above embodiments, the use of two metal swing arms 230 in the push part 200, taking advantage of the high structural strength of metal, allows for a reduction in the size or thickness of the swing arms 230, a crucial component of the push part 200, to a suitable range. This reduces the space occupied by the push part 200 within the relay and ensures sufficient structural strength for the swing arms 230, facilitating smooth high-frequency switching operations of the relay. This contributes to the overall miniaturization and compact design of the relay. Furthermore, when the push part 200 is applied to the relay, the two metal swing arms 230 can be positioned on either side of the moving contact 131 in at least one switch of the relay's contact part 100. Since the metal swing arms 230 themselves are relatively thin, the moving contact 131 can have a larger width while maintaining or optimizing the total width along the first axial direction of the moving contact 131 plus the metal swing arms 230, effectively improving its ability to carry high currents. This allows the relay to be suitable for higher voltage or higher current applications. Meanwhile, the push unit 220 in the push section 200 is used to push the moving contact 131 to move. The two metal swing arms 230 serve as the connection structure 2410 between the push unit 220 and the mounting base 240, enabling the push unit 220 to swing relative to the mounting base 240. By swinging, the moving contact 131 is pushed to move. Compared with the direct-acting push structure, this can effectively prevent jamming and reduce motion resistance, ensuring that the thrust applied to the moving contact 131 is balanced and the motion trajectory is accurate. This ensures that the relay has reliable and stable switching performance and saves drive energy consumption.

[0170] In at least one embodiment, the mounting base 240 has a pivot 242, and the pivot 242 is made of metal; the metal swing arm 230 is pivotally connected to the pivot 242.

[0171] The use of a metal shaft 242 and a metal swing arm 230 creates a pivotal connection between the metal components. This configuration significantly reduces wear on the shaft 242 caused by the metal swing arm 230 during long-term oscillation, and especially avoids the scraping problems that may occur when the metal swing arm 230 directly mates with a non-metallic (e.g., plastic) shaft 242 or mounting base 240. Therefore, it helps maintain the cleanliness of the relay's internal components, preventing particle contamination of the contacts due to wear and thus affecting its electrical contact performance, thereby improving the operational reliability and service life of the actuator 200 and the entire relay.

[0172] In at least one embodiment, the metal swing arm 230 is a sheet-like member with a predetermined thickness, the thickness direction of which is parallel to the first axial direction.

[0173] Since the metal swing arm 230 is a sheet-like component with a predetermined thickness, this shape defines that the metal swing arm 230 has a small thickness dimension relative to its width and length, and its thickness direction is parallel to the first axis, thereby further reducing the space occupied by the push part 200 in the first axis, which helps to reduce the overall size of the push part 200 and even the entire relay in the first axis, improving space utilization and design compactness.

[0174] In at least one embodiment, the metal swing arm 230 includes a first portion 234 and a second portion 235; the first portion 234 is at least partially opposite to the energized portion of the movable contact 131 in a first axial direction, and the second portion 235 is not opposite to the energized portion of the movable contact 131 in a first axial direction; the distance between the first portions 234 of the two metal swing arms 230 in a first axial direction is greater than the distance between the corresponding second portions 235 of the two metal swing arms 230 in a first axial direction.

[0175] Since the distance between the first part 234 of the two metal swing arms 230 corresponding to the moving contact 131 in the first axial direction is greater than the distance between the second part 235 of the two metal swing arms 230 not corresponding to the moving contact 131 in the first axial direction, in the area where the moving contact 131 needs to be accommodated, by increasing the distance between the first part 234 of the two metal swing arms 230, it is ensured that the moving contact 131 has sufficient space for movement and accommodation; while in the area where it does not need to directly correspond to the moving contact 131 (e.g., the connection area near the rotating shaft 242), the distance between the two metal swing arms 230 is reduced, which helps to reduce the structural size of these areas, thereby making the space occupied in the first axial direction of the parts of the two metal swing arms 230 that do not need to correspond to the energized parts of the moving contact 131 smaller, thus improving the compactness of the overall structure.

[0176] In at least one embodiment, the metal swing arm 230 is, along its length direction, a shaft connection portion 231, an extension portion 232, and a push connection portion 233; the shaft connection portion 231 is connected to the rotating shaft 242, and the push connection portion 233 is connected to the push unit 220; the extension portion 232 forms a first part 234, and at least the shaft connection portion 231 forms a second part 235.

[0177] By dividing the metal swing arm 230 along its length into a shaft connection portion 231, an extension portion 232, and a push connection portion 233, with the extension portion 232 forming a first part 234 with a larger axial distance and at least the shaft connection portion 231 forming a second part 235 with a smaller axial distance, this division of functional areas allows the structure of the metal swing arm 230 to correspond more precisely with its function: the shaft connection portion 231 is dedicated to a compact connection with the rotating shaft 242 with a smaller axial distance, the extension portion 232 provides sufficient space for the moving contact 131 to accommodate and operate, and the push connection portion 233 is used to reliably connect with the push unit 220, thereby achieving a compact connection with the rotating shaft 242 and optimizing the functions of each part.

[0178] In at least one embodiment, the mounting base 240 is provided with a limiting portion 243; the limiting portion 243 includes two limiting surfaces arranged facing each other and / or back to each other along the first axial direction, the two limiting surfaces being adapted to form a limiting engagement with the metal swing arm 230 and / or the pushing unit 220 along the first axial direction to restrict the movement of the metal swing arm 230 and the pushing unit 220 as a whole in the first axial direction.

[0179] Because a limiting part 243 is provided on the mounting base 240, and two mutually cooperating limiting surfaces are provided on the limiting part 243, these two limiting surfaces can define a space in the first axial direction that is adapted to the size of the metal swing arm 230 and / or the pushing unit 220. The metal swing arm 230 and the pushing unit 220 as a whole are confined in this space, thereby preventing the overall structure from shifting in the first axial direction during swinging, and ensuring the stability of the pushing part 200 during operation.

[0180] In at least one embodiment, the limiting portion 243 is provided corresponding to the assembly position of the two metal swing arms 230 and has two first limiting surfaces 244 arranged facing each other along the first axial direction. The two first limiting surfaces 244 cooperate to limit the movement of the two metal swing arms 230 in the first axial direction.

[0181] Because the limiting part 243 provided on the mounting base 240 limits the range of motion of the two metal swing arms 230 and the push unit 220 connected thereto in the first axis through its two first limiting surfaces 244 arranged facing each other along the first axis, it effectively prevents the overall structure from unnecessary axial movement or detachment from the mounting base 240 during the swinging process around the first axis, ensuring the stability of the working position of the push part 200 and laying the foundation for realizing a reliable push function.

[0182] In at least one embodiment, the limiting part 243 further has two second limiting surfaces 245 arranged opposite to each other along the first axis, the two second limiting surfaces 245 being located between two first limiting surfaces 244 along the first axis; the two metal swing arms 230 are respectively located between one set of first limiting surfaces 244 and second limiting surfaces 245 for positioning in the first axis.

[0183] Since the limiting part 243 is also provided with two second limiting surfaces 245, this double limiting structure formed by the combination of the first limiting surface 244 and the second limiting surface 245 not only restricts the overall axial movement of the swing arm assembly, but also provides independent and precise axial positioning for each metal swing arm 230. This effectively prevents the individual metal swing arms 230 from axially shifting relative to the rotating shaft 242 or relative to each other, ensuring the accuracy of the relative position between each metal swing arm 230 and the moving contact 131. Especially in the case of a compact structural arrangement, it can effectively avoid interference between the metal swing arms 230 and the moving contact 131 or other adjacent components, thereby ensuring the reliability of the movement of the moving contact 131.

[0184] In at least one embodiment, the metal swing arm 230 consists of a shaft connection portion 231, an extension portion 232, and a push connection portion 233 along its length direction; the shaft connection portion 231 is connected to the rotating shaft 242, and the push connection portion 233 is connected to the push unit 220; the limiting portion 243 only cooperates with the shaft connection portion 231 of the metal swing arm 230.

[0185] By limiting the contact area between the limiting structure and the metal swing arm 230 to its shaft connection 231, the contact area between the two can be effectively reduced. This reduction in contact area helps decrease the frictional resistance of the metal swing arm 230 during its swing around the first axis, making the movement of the swing arm 230 smoother. It also reduces wear caused by friction, extends the service life of the pushing part 200, and may reduce the driving energy consumption of the drive mechanism to some extent.

[0186] In at least one embodiment, the end of the metal swing arm 230 is provided with a mounting hole 236, and the periphery of the mounting hole 236 is provided with a snap-fit ​​interface 237 with an opening size smaller than the maximum inner diameter of the mounting hole 236. The metal swing arm 230 uses the snap-fit ​​interface 237 to elastically snap the mounting hole 236 onto the rotating shaft 242.

[0187] Because the metal swing arm 230 has an assembly hole 236 with a snap-fit ​​interface 237 at its end, the assembly hole 236 is elastically snapped onto the rotating shaft 242 through the snap-fit ​​interface 237. This utilizes the elastic properties of the metal material, allowing the metal swing arm 230 to be directly snapped onto the rotating shaft 242 without the need for additional fasteners. This simplifies the assembly process, shortens assembly time, and reduces production costs. Simultaneously, the elastic snap-fit ​​provides a certain preload, helping to eliminate gaps, ensuring a tight connection, and providing a certain degree of resistance to vibration and loosening.

[0188] In at least one embodiment, the rotating shaft 242 is provided with a journal 246 with a smaller outer diameter than other positions; the mounting hole 236 of the metal swing arm 230 is elastically engaged with the journal 246; the journal 246 forms a first limiting surface 244 and a second limiting surface 245 corresponding to the position of the limiting portion 243 on the two inner sidewalls along the first axial direction.

[0189] Because the rotating shaft 242 is provided with a journal 246 with a relatively small outer diameter, the mounting hole 236 of the metal swing arm 230 is elastically engaged with the journal 246. Furthermore, the two inner sidewalls of the journal 246 along the first axial direction (i.e., the stepped surfaces of the journal 246) directly form a first limiting surface 244 and a second limiting surface 245 for axial positioning. This design simplifies the connection structure between the rotating shaft 242 and the metal swing arm 230. The journal 246 not only provides an accurate positioning reference for the elastic engagement of the metal swing arm 230, but its two sidewalls also serve as axial limiting surfaces, achieving the integration of assembly positioning and axial limiting functions, improving assembly accuracy and efficiency, and making the limiting more reliable and compact.

[0190] In at least one embodiment, the mounting base 240 further includes a base body 241; a rotating shaft 242 is independently disposed and assembled on the base body 241; and a limiting part 243 is disposed on the rotating shaft 242 and the base body 241, or is formed by the rotating shaft 242 and the base body 241 in cooperation.

[0191] Since the mounting base 240 includes a base body 241 and an independent rotating shaft 242, the structural scheme for achieving axial positioning is further clarified when the limiting part 243 is formed by the rotating shaft 242, the base body 241, or the rotating shaft 242 and the base body 241. Specifically, when the limiting part 243 is formed by the rotating shaft 242 and the base body 241, in addition to axially limiting the two metal swing arms 230, the limiting part 243 can also simultaneously restrict the axial position of the metal swing arms 230 and the rotating shaft 242 relative to the base body 241. This method avoids the need for methods requiring high assembly precision and process requirements, such as interference fits, to fix the rotating shaft 242, making the installation of the rotating shaft 242 more convenient, and ensuring good positional stability of the rotating shaft 242 in the first axial direction.

[0192] In at least one embodiment, the seat 241 includes a first fitting 247 and a second fitting 248; one end of the pivot 242 is fitted to the first fitting 247 and the other end is fitted to the second fitting 248; the second fitting 248 is fastened to the first fitting 247 by fasteners; at least one metal swing arm 230 is sleeved on the pivot 242 from one end of the pivot 242 near the second fitting 248.

[0193] Since the base 241 is composed of a first mounting part 247 and a second mounting part 248, the two ends of the rotating shaft 242 are respectively assembled to these two mounting parts, and the second mounting part 248 is fixed to the first mounting part 247 by fasteners, which reduces the installation difficulty of the metal swing arm 230. With this split base design, at least one metal swing arm 230 can be conveniently connected from the end of the rotating shaft 242 near the second mounting part 248 before the second mounting part 248 is fixed, which also facilitates subsequent maintenance or replacement.

[0194] In at least one embodiment, the first assembly 247 and the second assembly 248 are each provided with a first limiting surface 244, and the rotating shaft 242 is provided with a second limiting surface 245 facing the two first limiting surfaces 244.

[0195] Because the first limiting surfaces 244 on the two fittings (first fitting 247 and second fitting 248) of the base 241 respectively cooperate with the second limiting surfaces 245 on the rotating shaft 242 facing them, the position of the rotating shaft 242 and the metal swing arm 230 mounted on it as a whole relative to the fixed base 241 in the first axial direction can be precisely controlled. This ensures the axial positioning accuracy and operational stability of the entire rotating assembly within the base 241, providing a guarantee for the reliable operation of the driving part 200.

[0196] In at least one embodiment, at least a portion of the second fitting 248 is engaged with the first fitting 247 along a first axial direction.

[0197] By forming an interlocking structure 249 between the second assembly 248 and the first assembly 247 (e.g., through a convex-concave fit or a stepped fit for positioning), the connection stability and positioning accuracy between the first assembly 247 and the second assembly 248 are further enhanced, in addition to the fixing effect of the fasteners. This interlocking structure 249 can better resist misalignment and deformation that may be caused by vibration or external forces, making the assembled seat 241 more rigid overall, providing a more stable support foundation for the pivot 242 and the metal swing arm 230, and helping to improve the overall motion accuracy and durability of the pushing part 200.

[0198] In at least one embodiment, a fitting groove adapted to the shape and size of at least a portion of the second fitting 248 is provided at the position where the first fitting 247 is used to install the second fitting 248 so that at least a portion of the first fitting 247 and the second fitting 248 form a fitting relationship along a first axial direction; and / or, one of the first fitting 247 and the second fitting 248 is provided with a positioning protrusion 2411 extending along the first axial direction, and the other is provided with a positioning hole 2412 that can be fitted and inserted into the positioning protrusion 2411 so that at least a portion of the first fitting 247 and the second fitting 248 form a fitting relationship along the first axial direction.

[0199] The setting of the interlocking groove, as well as the positioning protrusion 2411 and positioning hole 2412, can reliably position and prevent the second assembly 248 from rotating, so that the second assembly 248 only needs to be fixed by one fastener, simplifying the installation structure; in particular, the setting of the interlocking groove also prevents the second assembly 248 from protruding from the surface of the first assembly 247 and increasing the overall size of the structure.

[0200] In at least one embodiment, the pushing unit 220 is at least partially made of plastic and is fixedly connected to the two metal swing arms 230 as a whole by injection molding, riveting, screwing or bonding.

[0201] Because the actuating unit 220 is made of plastic and is fixedly connected to the two metal swing arms 230 as a whole through injection molding, riveting, screwing, or bonding, the injection molding connection method utilizes the characteristics of the injection molding process, enabling the plastic actuating unit 220 and the metal swing arms 230 to be tightly integrated, forming a component with strong structural integrity and a firm connection. The plastic actuating unit 220 has advantages such as light weight, ease of molding complex shapes, low cost, and good electrical insulation, while the metal swing arms 230 ensure structural strength and rigidity. Injection molding simplifies subsequent assembly processes, improves production efficiency, and ensures effective force transmission when actuating the moving contact 131.

[0202] In at least one embodiment, the pushing unit 220 includes a pushing body 2210 made of plastic and a pre-embedded part 2211 made of metal. The pushing body 2210 and the pre-embedded part 2211 are integrated by injection molding. Two metal swing arms 230 are fixedly connected to the pre-embedded part 2211 by riveting, screwing or welding.

[0203] Since the metal swing arm 230 is connected to the metal embedded part 2211, a more robust and reliable connection foundation is provided for the metal swing arm 230. The plastic push body 2210 still leverages its advantages of being lightweight, easy to mold, and having good electrical insulation, while the mechanical fixing of the metal swing arm 230 and the metal embedded part 2211 through riveting, screwing, or welding further ensures the strength and durability of the connection, ensuring reliable force transmission.

[0204] In at least one embodiment, the pushing unit 220 includes a pushing body 222 and at least one first elastic member 223; the pushing body 222 is connected to the metal swing arm 230; the first elastic member 223 is disposed between the pushing body 222 and the moving contact 131 in the closing direction of the moving contact 131 to provide contact pressure when the moving contact 131 and the stationary contact 141 are closed.

[0205] Since the actuating unit 220 includes an actuating body 222 and at least one first elastic element 223, the actuating body 222 is connected to the metal swing arm 230, and the first elastic element 223 is positioned between the actuating body 222 and the moving contact 131 and is arranged corresponding to the closing direction of the moving contact 131, the actuating part 200 has overtravel and energy storage functions. When the moving contact 131 contacts the stationary contact 141, the actuating body 222 can still continue to move a small distance (overtravel) under external force. During this process, the first elastic element 223 is compressed and stores energy, which ensures that even in the presence of manufacturing tolerances or contact wear, the moving contact 131 and the stationary contact 141 can maintain stable and sufficient contact pressure, thereby ensuring the reliability of switch closure and low contact resistance. At the same time, the buffering effect of the first elastic element 223 also helps to reduce the impact and bounce when the contact closes, extend the contact life, and reduce operating noise.

[0206] In addition, this utility model also provides the following technical solutions:

[0207] A relay includes: a contact portion 100 including at least one switch, the switch including a moving contact 131 and a stationary contact 141; and a push portion 200 as described above, for pushing the moving contact 131 in the at least one switch of the contact portion 100 to close or open a mounting base 240 with the stationary contact 141.

[0208] Because the relay employs any of the aforementioned actuating portions 200, and the mounting base 240 of the actuating portion 200 is fixed to or at least partially formed into the relay housing, the entire relay benefits from the various technical advantages brought by the actuating portion 200, such as compact structure, high space utilization, good mechanical strength, and reliable operation achieved through the application of the metal swing arm 230. Mounting base 240

[0209] In at least one embodiment, a housing is also included; the mounting base 240 in the push portion 200 is fixed or at least partially formed in the housing.

[0210] The mounting base 240 is securely attached to the housing, ensuring the precise installation and stable operation of the actuating part 200 inside the relay, thus laying a solid structural foundation for improving the overall performance of the relay and ensuring its long-term reliable operation.

[0211] In at least one embodiment, the moving contact 131 includes an actuating part 135 adapted to swing relative to the housing, and the actuating part 135 is pushed by the pushing unit 220 to close or open with the stationary contact 141.

[0212] Because the actuating part 135 of the moving contact 131 has the ability to oscillate around a certain fulcrum or area, it can better match the oscillating output characteristics of the push unit 220. When the actuating part 135 of the moving contact 131 and the movement mode of the push unit 220 (both oscillation or mainly oscillation) are coordinated, the relative slippage or unnecessary angular deviation generated during the movement can be reduced, thereby achieving more direct and efficient force transmission and reducing energy loss and unnecessary wear. In particular, when the push unit 220 includes an elastic element (such as the first elastic element 223), this coordinated oscillation helps the elastic element 223 to be subjected to uniform force during compression and release, avoiding the risk of premature failure, performance degradation, or breakage from the preset position of the elastic element 223 due to uneven force, thereby improving the overall reliability and durability of the relay operation.

[0213] In at least one embodiment, the movable contact 131 pushed by the pushing part 200 is a flexible movable contact, which includes a fixed part 134, an actuating part 135, and a flexible connecting part 136. The fixed part 134 is fixed relative to the stationary contact 141 corresponding to the movable contact 131. The actuating part 135 is adapted to swing relative to the fixed part 134 to close or open with the stationary contact 141. The flexible connecting part 136 connects the actuating part 135 and the fixed part 134 and is adapted to bend. The actuating part 135 of the flexible movable contact is located between the two metal swing arms 230 of the pushing part 200. At least a portion of the connection between the actuating part 135 and the flexible connecting part 136 of the flexible movable contact is disposed close to the pivot 242 in the swing direction of the metal swing arm 230.

[0214] Because the movable contact 131 driven by the pushing part 200 is set as a flexible movable contact, its actuating part 135 is located between the two metal swing arms 230 of the pushing part 200. At the same time, at least a portion of the connection between the actuating part 135 and the flexible connecting part 136 is set close to the pivot 242 (i.e., the first axis) in the swing direction of the metal swing arm 230, so that the movement trajectory of the connection point is closer to the movement trajectory of the action point on the pushing unit 220 (both are swings around the first axis). This geometric approximation is beneficial to maintaining better consistency between the swing amplitude of the actuating part 135 of the movable contact 131 and the pushing unit 220, thereby improving the stability of the swing of the movable contact 131 and achieving more precise contact alignment. Furthermore, when the first elastic element 223 is included in the pushing unit 220, the consistency of the swing amplitude of the moving contact 131 and the pushing unit 220 can prevent the moving part 135 of the moving contact 131 from tilting too much relative to the pushing unit 220, which would cause the first elastic element 223 to break due to the unbalanced force on both sides, thus improving the working reliability of the moving contact 131 and the first elastic element 223.

[0215] In at least one embodiment, at least a portion of the connection between the actuating part 135 of the flexible moving contact and the flexible connecting part 136 is located between the two metal swing arms 230.

[0216] By positioning at least a portion of the connection between the actuating part 135 and the flexible connecting part 136 of the flexible moving contact between the two metal swing arms 230, this spatial arrangement ensures that the connection between the actuating part 135 and the flexible connecting part 136, which is the key active area of ​​the moving contact 131, moves under the guidance and constraint of the two metal swing arms 230. Combined with the arrangement of the connection part close to the rotating shaft 242, this works together to further improve the consistency of the swing amplitude of the actuating part 135 of the moving contact 131 and the pushing unit 220, making the movement of the moving contact 131 more stable and controllable. It also avoids the actuating part 135 of the moving contact 131 tilting too much relative to the pushing unit 220, which would cause the first elastic element 223 to break due to the imbalance of forces on both sides. This is beneficial to improving the accuracy and reliability of contact closure and opening.

[0217] In at least one embodiment, a driving part 300 is further included, the driving part 300 includes a motor, the output end of the motor is kept at a stop position when the motor stops rotating; the pushing part 200 also includes a rotating member 210; the rotating member 210 is connected to the output end of the motor to be driven by the motor to rotate around a second axis, and is provided with a first mating part; the pushing unit 220 is provided with a second mating part that slides perpendicular to the second axis and is driven by the rotating member 210 to swing around a first axis parallel to the second axis.

[0218] By introducing a drive section 300 containing a motor and a rotating component 210, and linking the push unit 220 with the rotating component 210 through specific first and second mating parts, the rotational motion of the motor is converted into the oscillating motion of the push unit 220. The motor output remains in a stopped position when rotation stops, giving the relay a self-locking capability. This means that after switching to a certain state (e.g., contact closed or open), it can maintain that state without continuously supplying power to the motor, ensuring that the push unit 220 can hold the moving contact 131 in a specific position and reducing energy consumption caused by maintaining the position. Compared to some traditional linkage mechanisms, the sliding fit structure between the push unit 220 and the rotating component 210 typically has advantages such as smaller size, higher motion trajectory accuracy, lower impact force during pushing, and relatively lower requirements for component dimensional accuracy.

[0219] In at least one embodiment, one of the first mating part and the second mating part is a sliding groove 227 extending perpendicular to the second axis, and the other is a sliding pin 212 extending into the sliding groove 227 along the second axis, with the sliding pin 212 offset relative to the second axis.

[0220] By defining the specific structures of the first and second mating parts as a sliding groove 227 and a mating offset sliding pin 212, this pin-groove mating mechanism can precisely convert the rotational motion of the rotating member 210 into the reciprocating oscillation of the pushing unit 220. Therefore, the sliding trajectory is more accurate, the impact is less, the connection is more compact, the operation is more reliable, and it is less prone to mechanism jamming or reduced relay life due to scraping.

[0221] In at least one embodiment, the moving contact 131 in the contact portion 100 corresponding to the two metal swing arms 230 is a common moving contact 137. The common moving contact 137 and the stationary contacts 141 located on both sides of the moving direction of the common moving contact 137 respectively cooperate to form two switches. The pushing unit 220 in the pushing portion 200 pushes the common moving contact 137 to close with the stationary contact 141 on either side, or to form a gap with both stationary contacts 141.

[0222] By setting the moving contact 131 corresponding to the two metal swing arms 230 as a common moving contact 137, and cooperating with the two stationary contacts 141 located on both sides of its operating direction to form two switches, the relay has the function of a changeover switch (single-pole double-throw switch), giving the relay more flexible circuit control capabilities, enabling circuit switching, selection, or conversion between two different circuit paths, thus expanding the application range of the relay.

[0223] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A pushing portion for pushing at least one moving contact in a switch of a relay contact portion to close or open with a stationary contact, characterized in that, include: Mounting base; Two metal swing arms are arranged on both sides of at least one movable contact in a first axial direction and are rotatably connected to the mounting base by a pivot to swing about the first axis, the extension direction of the first axis being the first axial direction; and A pushing unit, which connects the two metal swing arms and is capable of swinging relative to the mounting base about a first axis, is used to push the moving contact corresponding to the position of the two metal swing arms.

2. The pushing part as described in claim 1, characterized in that, The mounting base has the pivot, and the pivot is made of metal; the metal swing arm is pivotally connected to the pivot.

3. The pushing part as described in claim 1, characterized in that, The metal swing arm is a sheet-like component with a predetermined thickness, and its thickness direction is parallel to the first axial direction.

4. The pushing part as described in claim 1, characterized in that, The metal swing arm includes a first part and a second part; the first part is opposite to at least a portion of the energized portion of the moving contact in a first axial direction, and the second part is not opposite to the energized portion of the moving contact in a first axial direction; the distance between the first parts of the two metal swing arms in a first axial direction is greater than the distance between the corresponding second parts of the two metal swing arms in a first axial direction.

5. A pushing part as described in claim 4, characterized in that, The metal swing arm consists of a shaft connection portion, an extension portion, and a push connection portion along its length direction; the shaft connection portion is connected to the rotating shaft, and the push connection portion is connected to the push unit; the extension portion forms the first part, and at least the shaft connection portion forms the second part.

6. The pushing part as described in claim 1, characterized in that, The mounting base is provided with a limiting part; the limiting part includes two limiting surfaces arranged facing each other and / or back to back along the first axis, and the two limiting surfaces are adapted to form a limiting engagement with the metal swing arm and / or the pushing unit along the first axis to restrict the movement of the metal swing arm and the pushing unit as a whole in the first axis.

7. A pushing portion as described in claim 6, characterized in that, The limiting part is provided corresponding to the assembly position of the two metal swing arms, and has two first limiting surfaces arranged facing each other along the first axis. The two first limiting surfaces cooperate with the two metal swing arms respectively to restrict the movement of the two metal swing arms in the first axis.

8. A pushing portion as described in claim 7, characterized in that, The limiting part also has two second limiting surfaces arranged opposite to each other along the first axis, and the two second limiting surfaces are located between the two first limiting surfaces along the first axis; the two metal swing arms are respectively located between one set of opposing first limiting surfaces and second limiting surfaces to be positioned in the first axis.

9. A pushing portion as described in claim 7 or 8, characterized in that, The metal swing arm consists of a shaft connection part, an extension part, and a push connection part along its length direction; the shaft connection part is connected to the rotating shaft, and the push connection part is connected to the push unit; the limiting part only cooperates with the shaft connection part of the metal swing arm.

10. A pushing portion as described in claim 8, characterized in that, The end of the metal swing arm is provided with an assembly hole, and the periphery of the assembly hole is provided with a snap-fit ​​interface with an opening size smaller than the maximum inner diameter of the assembly hole. The metal swing arm is elastically snapped into the rotating shaft through the snap-fit ​​interface.

11. A pushing portion as described in claim 10, characterized in that, The rotating shaft has a journal with a smaller outer diameter than other positions; the mounting hole of the metal swing arm is elastically engaged with the journal; the two inner sidewalls of the journal along the first axial direction form a first limiting surface and a second limiting surface corresponding to the position of the limiting part.

12. A pushing portion as described in claim 8, characterized in that, The mounting base includes a base body and the rotating shaft; the rotating shaft is independently set and assembled to the base body; the limiting part is provided on the rotating shaft or the base body, or is formed by the rotating shaft and the base body in cooperation.

13. A pushing portion as described in claim 12, characterized in that, The seat includes a first assembly and a second assembly; one end of the rotating shaft is assembled to the first assembly and the other end is assembled to the second assembly; the second assembly is fixed to the first assembly by fasteners; at least one of the metal swing arms is sleeved onto the rotating shaft from one end of the rotating shaft near the second assembly.

14. A pushing portion as described in claim 13, characterized in that, The first assembly and the second assembly are each provided with a first limiting surface, and the rotating shaft is provided with a second limiting surface facing the two first limiting surfaces.

15. A pushing portion as described in claim 13, characterized in that, At least a portion of the second assembly is fitted into the first assembly along the first axial direction.

16. A pushing portion as described in claim 15, characterized in that, in The first assembly has a fitting groove at the position for mounting the second assembly that is adapted to the shape and size of at least a portion of the second assembly so that at least a portion of the first assembly and the second assembly form a fitting relationship along the first axial direction; and / or, one of the first assembly and the second assembly has a positioning protrusion extending along the first axial direction, and the other has a positioning hole that can be fitted into the positioning protrusion so that at least a portion of the first assembly and the second assembly form a fitting relationship along the first axial direction.

17. A pushing portion as claimed in claim 1, characterized in that, The pushing unit is at least partially made of plastic and is fixedly connected to the two metal swing arms as a whole by injection molding, riveting, screwing or bonding.

18. A pushing portion as claimed in claim 1, characterized in that, The pushing unit includes a pushing body made of plastic and a pre-embedded part made of metal. The pushing body and the pre-embedded part are integrated by injection molding. The two metal swing arms are fixedly connected to the pre-embedded part by riveting, screwing or welding.

19. A pushing portion as claimed in claim 1, characterized in that, The pushing unit includes a pushing body and at least one first elastic element; the pushing body is connected to the metal swing arm; the first elastic element is arranged corresponding to the closing direction of the moving contact and is placed between the pushing body and the moving contact to provide contact pressure when the moving contact and the stationary contact are closed.

20. A relay, characterized in that, include: The contact portion includes at least one switch, the switch including a moving contact and a stationary contact; and The actuating portion as described in any one of claims 1 to 19 is used to actuate at least one moving contact in the contact portion to close or open with the stationary contact.

21. A relay as described in claim 20, characterized in that, It also includes a housing; the mounting base in the actuating portion is fixed to or at least partially formed in the housing.

22. A relay as described in claim 21, characterized in that, The moving contact includes an actuating part adapted to swing relative to the housing, and the actuating part is pushed by the pushing unit to close or open with the stationary contact.

23. A relay as described in claim 20, characterized in that, the receiver... The moving contact pushed by the pushing part is a flexible moving contact, which includes a fixed part, an actuating part, and a flexible connecting part. The fixed part is fixed relative to the stationary contact corresponding to the moving contact. The actuating part is adapted to swing relative to the fixed part to close or open with the stationary contact. The flexible connecting part connects the actuating part and the fixed part and is adapted to bend. The actuating part of the flexible moving contact is located between the two metal swing arms of the pushing part. At least a portion of the connection between the actuating part and the flexible connecting part of the flexible moving contact is disposed close to the pivot in the swing direction of the metal swing arm.

24. A relay as described in claim 23, characterized in that, At least a portion of the connection between the actuating part and the flexible connecting part of the flexible moving contact is located between the two metal swing arms.

25. A relay as described in claim 20, characterized in that, It also includes a drive section, which includes a motor, the output end of which remains in a stopped position when the motor stops rotating; the push section also includes a rotating component; the rotating component is connected to the output end of the motor to be driven by the motor to rotate around a second axis, and is provided with a first mating part; the push unit is provided with a second mating part that slides perpendicular to the second axis and is driven by the rotating component to swing around a first axis parallel to the second axis.

26. A relay as described in claim 25, characterized in that, One of the first mating part and the second mating part is a sliding groove extending perpendicular to the second axis, and the other is a sliding pin extending into the sliding groove along the second axis, wherein the sliding pin is offset relative to the second axis.

27. A relay as described in claim 20, characterized in that, In the contact portion, the moving contact corresponding to the two metal swing arms is a common moving contact. The common moving contact and the stationary contacts located on both sides of the moving direction of the common moving contact respectively cooperate to form two switches. The pushing unit in the pushing portion pushes the common moving contact to close with the stationary contact on either side, or to form a gap with both stationary contacts.

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