A contact part, a relay

Abstract

The utility model discloses a contact part, it is used for relay, it includes: mounting seat, at least two switches, the switch includes movable contact and static contact, wherein, at least two switches cooperation forms first switch group, the movable contact of each switch in first switch group is shared and is formed common movable contact by the movable contact of being shared, and the static contact of each switch is located the two sides of common movable contact along the action direction of common movable contact and is integrally injection molded with mounting seat. Adopt above -mentioned technical scheme, can improve the problem that the contact resistance of contact part movable contact and different static contact is not consistent and leads to the influence contact life and the stability of relay shell.

Description

Technical Field

[0001] This utility model relates to the field of relays, specifically to a contact 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] A relay typically includes a housing for its contact portion. The moving and stationary contacts are housed within this housing, and connection terminals extend from it to connect to external wiring structures. However, in existing relays, when a moving contact needs to cooperate with multiple stationary contacts to achieve complex circuit on / off control, differences in overtravel between the moving contact and different stationary contacts can easily occur. Furthermore, variations in contact pressure between the moving contact and different stationary contacts can also lead to inconsistent contact resistances. This can result in localized temperature rises exceeding design requirements, severely impacting contact lifespan and potentially causing deformation of the relay housing (plastic component) due to uneven stress and high temperatures. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned defects or problems in the background art and to provide a contact part and a relay that can improve the problem of the contact life and relay housing stability being affected by the inconsistent contact resistance between the moving contact and different stationary contacts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A contact portion for a relay includes: a mounting base; at least two switches, each switch including a moving contact and a stationary contact; wherein the at least two switches cooperate to form a first switch group; in the first switch group, each switch shares a moving contact, and the shared moving contact forms a common moving contact; the stationary contacts of each switch are located on both sides of the common moving contact along the direction of movement of the common moving contact and are integrally injection molded with the mounting base.

[0007] The applicant's research found that the reason why existing relays have the problems described in the background art is that, in the existing technology, each moving contact is installed on the housing, and the side wall and inside of the housing are radially positioned for each stationary contact by injection molding limiting grooves. However, problems such as draft angle and curing deformation during injection molding make it difficult to accurately control the positioning and limiting effects of the positioning structure (limiting groove) of each stationary contact. The cumulative error of each positioning structure leads to poor accuracy in the fit between the moving contact and each stationary contact, which easily results in poor fit accuracy. This leads to inaccurate alignment between the moving contact and each stationary contact, making it difficult to accurately control the fit accuracy between the moving contact and different stationary contacts. Furthermore, when the moving contact is disconnected from one of the stationary contacts, it is easy to accidentally close due to a stationary contact that is closer to the other side. In addition, in the existing technology, the positioning structure is also prone to deformation after long-term use, which leads to the failure of the positioning and limiting effects. To address this, in this technical solution, each stationary contact in the first switch group is integrally molded with its mounting base via injection molding, and they cooperate on both sides of a common moving contact, improving the assembly accuracy and structural stability issues of traditional relay contact parts. Integrating the stationary contacts with the mounting base via injection molding ensures that the position of each stationary contact is guaranteed by a high-precision injection mold. During the injection molding process, the placement of the pre-molded stationary contacts can be precisely set. After the plastic material cools and solidifies, the position of each stationary contact within the mounting base is fixed, eliminating the cumulative errors caused by part tolerances, tooling positioning errors, and assembly operation errors when fixing stationary contacts one by one using traditional assembly methods. This ensures precise control of the fit between the moving contact and different stationary contacts, allowing the moving contact to form a high-precision fit with the stationary contacts in both the open and closed positions. This provides structural assurance for the relay to achieve reliable engagement and release characteristics and electrical performance, and helps reduce the electrical losses of the relay. Furthermore, the injection-molded integral structure ensures that each stationary contact is no longer isolated and fixed to a single point on the mounting base, but rather is largely embedded in the plastic material, forming a unified whole. When the relay operates, the impact force generated by the closing of the moving and stationary contacts, as well as the forces generated by vibration or external impacts during long-term operation, are effectively distributed across the entire mounting base, rather than concentrated on a vulnerable single connection point. This effectively prevents the stationary contacts from shifting or loosening over long-term use, ensuring not only the stable operation of the relay but also the precision of the fit between the stationary and moving contacts over extended periods. In addition, since the stationary contacts are pre-assembled on the mounting base, subsequent assembly only requires the moving contacts, simplifying the assembly process, reducing time, and improving assembly efficiency.

[0008] In at least one embodiment, in the first switch group, the common moving contact is adapted to be closed or both open with the stationary contacts on both sides of its direction of action.

[0009] Because the first switching group uses a common moving contact, three independent circuit states can be achieved through this common moving contact: forming a closed circuit with one of the stationary contacts located on either side of its operating path, or maintaining a predetermined electrical gap with both stationary contacts and being in an open state. In addition to the traditional switching between the closed states of the two stationary contacts, the fully open state allows the relay to meet requirements such as safety isolation during circuit maintenance and independent and precise control of each battery cell during the pre-charging process of new energy vehicle batteries, significantly broadening the application range of this relay. Furthermore, because the stationary contact and the mounting base are injection molded as a single unit, the stationary contact has higher installation precision and stability, ensuring that the common moving contact maintains a stable contact gap with both stationary contacts when both are disconnected. This allows for better control of the contact gap precision and ensures reliable disconnection of the common moving contact from both stationary contacts.

[0010] In at least one embodiment, at least one switch forms a second switch group; at least one switch in the first switch group shares a stationary contact with at least one switch in the second switch group, and the shared stationary contact forms a common stationary contact.

[0011] Because at least one switch in the first switch group and at least one switch in the second switch group share a common stationary contact, and a single stationary contact serves two independent switch circuits simultaneously, the total number of required parts is reduced, installation procedures and time are reduced, and space utilization is improved. This makes the internal structure of the relay more compact, and more complex circuit functions, such as dual-circuit parallel or series connection, can be achieved without significantly increasing the overall size of the relay. Furthermore, the precise positioning of the two switches is achieved by injection molding the same stationary contact and the mounting base, which further improves the overall fit accuracy of the relay contact parts.

[0012] In at least one embodiment, the common stationary contact has a stationary contact portion corresponding to each of its two corresponding switches. The stationary contact portion is provided with a stationary contact for engaging with a moving contact on the moving contact portion, and the closing directions of the switches corresponding to the two stationary contact portions are opposite.

[0013] Since the common stationary contact has stationary contact parts with opposite closing directions for the two switches to which it belongs, it provides a basis for the series and parallel control of the first switch group and the second switch group. At the same time, it can avoid interference between the two moving contacts when they are in motion, which is conducive to the further miniaturization of the relay.

[0014] In at least one embodiment, all moving contacts are linked to each other so that the contact portion has at least three contact states: a first contact state in which the common moving contact and the common stationary contact are closed in the first switch group and the moving contact and the common stationary contact are open in the second switch group; a second contact state in which the common moving contact and the stationary contact located on the other side of the common moving contact are closed in the first switch group and the moving contact and the common stationary contact are closed in the second switch group; and a third contact state in which all switches in the first switch group and the second switch group are open.

[0015] Since the closed states of the common moving contact and different stationary contacts in the first switch group in the second switch group correspond to the closed and open states of each switch in the second switch group, that is, when the common moving contact is closed with one side of the stationary contact, it corresponds to the closed state of each switch in the second switch group, and when the common moving contact is closed with the other side of the stationary contact, it corresponds to the open state of each switch in the second switch group, the selective switching of series and parallel circuits can be realized inside the relay through the correspondence between the switch states, providing the necessary hardware foundation for specific applications such as intelligent switching of series and parallel states of battery packs.

[0016] In at least one embodiment, at least a portion of the common stationary contact is integrally formed with the mounting base by injection molding.

[0017] Since at least a portion of the common stationary contact is integrally molded with the mounting base via injection molding, this means that the common stationary contact does not have to be completely embedded in the mounting base. The contact portion of the common stationary contact can be largely exposed from the mounting base, which also reduces the overall volume of the mounting base, thus facilitating the miniaturization of the relay and improving the utilization rate of the internal space of the relay.

[0018] In at least one embodiment, the common stationary contact is an integral structure, including a first contact portion that cooperates with the switch of the first switch group, a second contact portion that cooperates with the switch of the second switch group, and a connecting portion connecting the first and second contact portions; the common stationary contact is injection molded integrally with the mounting base at least by means of the connecting portion; the first contact portion and the second contact portion are provided with stationary contacts for cooperating with the moving contacts on the moving contact.

[0019] By designing the common stationary contact as an integral structure comprising the first contact portion, the second contact portion, and the connecting portion, the number of parts is simplified and the structure is optimized, thereby improving the relative positional accuracy between the first and second contact portions. By injection molding at least a portion of its connecting portion integrally with the mounting base, a stable mounting reference is provided for the entire common stationary contact, improving its positional accuracy within the mounting base.

[0020] In at least one embodiment, the first switch group and the second switch group are arranged in a first direction; the first contact portion, the connecting portion, and the second contact portion of the common stationary contact are arranged sequentially along the first direction, the connecting portion extends in a second direction, and the first contact portion and the second contact portion are staggered in the second direction; the second direction is perpendicular to the first direction.

[0021] Because the first switch group and the second switch group are staggered in the first direction, and the various parts of the common stationary contact are staggered in the first and second directions, and the connecting part extends in the second direction, the efficient layout of the common stationary contact is achieved in the compact internal space of the relay, which is conducive to the miniaturization of the relay as a whole.

[0022] In at least one embodiment, the first contact portion and the second contact portion are staggered in a third direction, and the two are provided with the stationary contact point on opposite sides; the connecting portion extends in a third direction; the third direction is perpendicular to both the first direction and the second direction.

[0023] By utilizing the third-dimensional space to arrange the first contact, the connecting part, and the second contact, the conventional planar layout is transformed into a three-dimensional layout. This achieves effective utilization of the internal space of the relay in the third dimension, which is beneficial for realizing more complex functions without increasing the floor space and helps to miniaturize the overall structure of the relay.

[0024] In at least one embodiment, the first contact portion, the second contact portion, and the connecting portion are all sheet-like structures; the first contact portion and the second contact portion are perpendicular to the third direction; and the connecting portion is perpendicular to the first direction.

[0025] By designing the first contact portion, the second contact portion, and the connecting portion as sheet-like structures—meaning the common stationary contact is essentially a single component with a relatively small thickness—this shape constraint significantly reduces the space occupied by the common stationary contact while ensuring a high current-carrying area. Furthermore, the extension directions of the first contact portion, the second contact portion, and the connecting portion on the common stationary contact are defined. The extension structure of the connecting portion perpendicular to the first direction fully utilizes the space in the third direction, while the extension structures of the first and second contact portions perpendicular to the third direction ensure a good contact fit with the corresponding moving contact.

[0026] In at least one embodiment, the mounting base is provided with a partition wall; the partition wall is located between the first switch group and the second switch group along a first direction; the connecting portion of the common stationary contact is at least partially injection molded integrally with the partition wall.

[0027] Because a partition wall is installed on the mounting base between the first and second switch groups, the creepage distance between the two switch groups is increased, effectively preventing the risk of short circuits caused by electric arcing or electrical breakdown. This also allows the first and second switch groups to be placed as close as possible, achieving a compact layout and saving space. Simultaneously, the connection part of the common stationary contact is integrally injection molded with this partition wall, providing robust mechanical support and precise positioning for the common stationary contact. Furthermore, by utilizing the existing partition wall, and further reducing the internal space of the relay, a stable installation of the common stationary contact is achieved, further improving the overall compactness of the relay structure.

[0028] In at least one embodiment, in the first switch group, two stationary contacts corresponding to two switches are arranged along a third direction on both sides of the moving contact, wherein one stationary contact is the common stationary contact, the first contact portion of which extends from the partition wall and corresponds to the common moving contact, and the other stationary contact is integrally injection molded with the mounting base; in the second switch group, the stationary contact corresponding to one switch is the common stationary contact, the second contact portion of which extends from the partition wall and corresponds to the moving contact of the switch, and is integrally injection molded with the mounting base.

[0029] Because the first contact portion of the common stationary contact extends from the partition wall, while the second contact portion is injection molded integrally with the mounting base, most of the common stationary contact is fixed on the mounting base, which significantly improves the installation stability and anti-interference capability of the common stationary contact. The common stationary contact is less likely to be displaced or shaken by external forces. At the same time, the first contact portion extends directly from the partition wall, reducing the number or volume of parts required to fix the first contact portion, which is conducive to the efficient use of the internal space of the relay and ensures that the mounting base can be reliably molded.

[0030] In at least one embodiment, the terminals of the stationary contacts in the first switch group and the second switch group for external wiring are led out to the mounting base in the same direction and exposed on the outer surface of the relay.

[0031] Since the terminals of each stationary contact in the first and second switch groups are led out in the same direction for external wiring, it avoids the need to bend each stationary contact in multiple directions, reduces copper loss, and allows each stationary contact to lead out its terminals with a larger surface area. In schemes with terminals, this increases the connection strength and connection area with the terminals, especially the welding area during soldering. This facilitates the electrical connection between the relay and the external circuit, reduces the design and manufacturing difficulty of the external circuit, and expands the application scenarios of the relay.

[0032] In at least one embodiment, at least one stationary contact in the first switch group, excluding the common stationary contact, which is integrally injection molded with the mounting base, is columnar. One end of the stationary contact extends out of the mounting base and forms the terminal, while the other end extends out of the mounting base and is provided with a stationary contact for engaging with the moving contact on the common moving contact.

[0033] By designing the stationary contact as a columnar component, with one end directly exposed as a wiring terminal, the contact and wiring functions are integrated. This reduces the number of parts and intermediate connection links, simplifies the structure, and lowers contact resistance and failure risks caused by additional welding or connections. The columnar structure of the stationary contact itself also has high mechanical strength, ensuring its stability during injection molding and use, and providing sufficient strength to resist impacts from the moving contact.

[0034] In at least one embodiment, the second switch group further includes a stationary contact integrally injection molded with the mounting base, one end of which is connected to the second contact portion of the common stationary contact, and the other end protrudes from the mounting base to form the terminal.

[0035] Because of the presence of a stationary contact, the common stationary contact does not require a structure for leading out the wiring terminals. Therefore, the molding process of the common stationary contact is simpler, and it is also easier to integrate it with the mounting base by injection molding. Furthermore, by leading out the wiring terminals through an independent stationary contact, the electrical connection from the common moving contact to the external wiring can be guaranteed to be stable and reliable.

[0036] In at least one embodiment, each of the moving contacts includes a fixed end fixed relative to the mounting base and a movable end movable relative to the mounting base; the fixed end is fixedly connected to the mounting base; the movable end is adapted to move relative to the fixed end of the moving contact to close or open with the corresponding stationary contact.

[0037] Since the fixed end of the moving contact is fixedly connected to the mounting base, the mounting base can accurately position the fixed end of the moving contact, thereby further ensuring that the gap between the moving contact and different stationary contacts can be precisely controlled. The mounting base provides a stable and reliable reference for the reciprocating motion of the moving contact, ensuring that its moving end can move along a preset trajectory, which is the basis for the precise closing and opening of the moving contact and the stationary contact.

[0038] In at least one embodiment, the mounting base includes a base body and a connector that are integrally injection molded together; the base body is integrally injection molded with each of the stationary contacts, and the fixed end of the moving contact is fixedly connected to the connector.

[0039] Because the mounting base comprises a base body and a connector that are injection molded as a single unit, and the fixed end of the moving contact is fixedly connected to the metal connector, it avoids the deformation or damage to the base body that might occur if the moving contact were directly connected to the plastic base body. This improves the reliability and lifespan of the relay, while also allowing for the stable installation of moving contacts with greater rigidity and current-carrying cross-section, effectively increasing the relay's current-carrying capacity. Furthermore, the stationary contact and the connector are both injection molded as a single unit with the mounting base. In subsequent assembly processes, the moving contact can be directly connected and fixed to the connector, simplifying the overall assembly of the contact parts, saving time, and improving efficiency. In addition, since the connector is injection molded into the base body and the moving contact is connected to the base body through the connector, the installation accuracy of the moving contact is improved due to the high-precision assembly of the connector, further enhancing the overall fit accuracy of the relay contact parts.

[0040] In at least one embodiment, the movable contact is riveted, welded, screwed, or connected to the connector by fasteners.

[0041] Since the moving contact and the connecting parts are connected by riveting, welding, screwing or fastening, these connection methods can ensure that the fixed end of the moving contact and the connecting parts form a long-term stable, high-strength mechanical fixation and a low-resistance electrical connection, thus ensuring the reliability of the relay throughout its entire life cycle.

[0042] In at least one embodiment, the connector defines an extending direction, along which one end of the connector or a portion thereof protrudes from the base to form a riveting end; the movable contact is press-fitted to the riveting end along the extending direction.

[0043] Since one end of the connector extends out of the base to form a connecting end and is used to make a press-fit connection with the moving contact, the connection operation area can be exposed outside the base, which facilitates the access and operation of the press-fit equipment, thereby simplifying the assembly process and improving production efficiency.

[0044] In at least one embodiment, the connector defines an extending direction, along which one end of the connector forms a terminal for external wiring.

[0045] Because the connector itself has connection holes for external connection, it is convenient to connect to external wires. At the same time, while the connector is connected to the moving contact, it also undertakes the function of electrical conduction. It combines mechanical fixing and electrical lead-out functions into one component, reduces the number of parts, simplifies the internal conductive path, and improves the integration of the product.

[0046] In at least one embodiment, the connector has a connecting hole for external connection at one end along the extension direction; the connector has a protrusion that is perpendicular to the extension direction and protrudes outward, the protrusion being at least partially embedded in the seat body, and the protrusion forming the riveting end at one end in the extension direction and the top holding end at the other end in the extension direction; the top holding end is exposed in the seat body.

[0047] Because the connector has a protrusion perpendicular to its extension direction and embedded in the seat, and a top holding end exposed on the other end of the seat, the connection between the connector and the seat is tighter, which can effectively prevent displacement or rotation relative to the seat. Furthermore, when riveting the moving contact, the applied impact force can be directly transmitted to the external support fixture through the top holding end, avoiding damage or deformation of the plastic seat due to direct force, thereby improving the assembly accuracy. It can also prevent the connector body from deforming due to pressure during riveting, thus ensuring the integrity of the connection hole shape and reliable external connection.

[0048] In at least one embodiment, the base is provided with a top holding hole along the extending direction for exposing the top holding end in the base.

[0049] Because the base body is provided with a top holding hole for exposing the top holding end, it ensures that the external support fixture can accurately abut against the top holding end of the connector during the riveting process, while not excessively reducing the volume of the base body and the connection between the base body and the connector, thus ensuring the connection strength between the base body and the connector.

[0050] In at least one embodiment, at least a portion of the surface of the portion of the stationary contact embedded in the mounting base in the first switch group is patterned to increase the contact area with the mounting base and to prevent the stationary contact from rotating relative to the mounting base.

[0051] Since at least some of the stationary contacts in the first switch group have patterns on the surface of the portion embedded in the mounting base, these patterns form a microscopic mechanical interlock with the molten plastic during the injection molding process, which greatly increases the friction and contact area between the two, and can effectively prevent the stationary contacts from rotating or loosening when subjected to large external forces or stress caused by thermal expansion and contraction.

[0052] In at least one embodiment, at least a portion of the surface of the portion of the connector embedded in the base is patterned to increase the contact area with the base and to prevent the connector from rotating relative to the mounting base.

[0053] Because the surface of the part of the connector embedded in the base is patterned, the principle of mechanical interlocking is also used to enhance the bonding strength between the metal connector and the plastic base, ensuring the long-term stability of the position of the connector itself, which serves as the mounting reference for the moving contact, thereby ensuring the accuracy of the movement of the moving contact.

[0054] This utility model also provides a relay, which includes the contact portion as described in any of the preceding claims.

[0055] Because the relay uses any of the contact parts described above, it can have better matching accuracy between the moving and stationary contacts in the switch, thereby reducing electrical losses during relay use and facilitating long-term normal use of the relay.

[0056] In at least one embodiment, it further includes: a pushing portion connected to the moving contact of each switch in the contact portion to push each moving contact to close or open with the corresponding stationary contact; and a driving portion, the output of which is connected to the pushing portion to drive the pushing portion.

[0057] Since the relay also includes a housing, and all the terminals of the moving and stationary contacts are located on the same surface of the housing, this uniform and orderly terminal layout not only facilitates the layout of the moving and stationary contacts inside the relay, but also facilitates the electrical connection of the relay with external circuits, thus broadening the application range of the relay.

[0058] In at least one embodiment, a housing is further included that is fixedly connected to the mounting base; the contact portion, the pushing portion, and the driving portion are mounted on the housing.

[0059] Since the relay also includes a housing, and all the terminals of the moving and stationary contacts are located on the same surface of the housing, this uniform and orderly terminal layout not only facilitates the layout of the moving and stationary contacts inside the relay, but also facilitates the electrical connection of the relay with external circuits, thus broadening the application range of the relay. Attached Figure Description

[0060] 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.

[0061] Figure 1 This is a three-dimensional structural diagram of the relay in Example 1;

[0062] Figure 2 This is a schematic diagram of the internal structure of the relay in Embodiment 1;

[0063] Figure 3 This is a three-dimensional structural diagram of the relay in Embodiment 1 from another perspective;

[0064] Figure 4 This is a schematic diagram of the internal structure of the relay in Embodiment 1 from another perspective;

[0065] Figure 5 This is a schematic diagram of the relay's X-axis direction in Example 1;

[0066] Figure 6 This is a schematic diagram of the relay's Z-axis direction in Example 1;

[0067] Figure 7 for Figure 6 Schematic diagram of section AA;

[0068] Figure 8 for Figure 6 Schematic diagram of the BB section;

[0069] Figure 9 This is a schematic diagram of the first and second switch groups in the contact portion of Embodiment 1;

[0070] Figure 10 This is a schematic diagram of the common stationary contact and stationary contact head of the contact portion in Embodiment 1;

[0071] Figure 11 This is a schematic diagram of the Z-axis direction of the relay in Embodiment 1, excluding the drive section;

[0072] Figure 12 This is a partial structural diagram of the relay in Example 1;

[0073] Figure 13 for Figure 12 Cross-sectional view of the structure shown;

[0074] Figure 14 This is a partial structural diagram of the pushing part in Embodiment 1;

[0075] Figure 15 This is a schematic diagram of the pusher component in Example 1.

[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; Fixed end 138; Moving end 139; Stationary contact 141; Stationary contact 142; Common stationary contact 143; Stationary contact part 144; First contact part 145; Second contact part 146; Connecting part 147; Stationary contact 148; Mounting base 150; Base body 151; Connector 152; Partition wall 153; Connecting hole 154; Protrusion 155; Riveted end 156; Supporting end 157; Supporting hole 158; Wiring terminal 161; Pattern 162.

[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 limiting part 224; second limiting part 225; pushing part 226; sliding groove 227; side wall 228; overlapping part 229; metal swing arm 230; shaft connecting part 231; extension part 232; pushing connecting part 233; rotating shaft 240; 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] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0082] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0083] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings 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, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0084] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0085] Terminology Definition

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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."

[0090] 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.

[0091] In the claims and description of this utility model, unless otherwise specified, the term "moving contact" should 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 application, 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 end for contacting the stationary contact.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] In the claims and description of this utility model, unless otherwise specified, the term "common moving contact" shall be interpreted as: in this application, specifically referring to a moving contact shared by at least two switches (forming a first switch group).

[0096] 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.

[0097] In the claims and description of this utility model, unless otherwise specified, the term "static contact" should be interpreted as: a component that remains fixed in position relative to the movement of the moving contact. In this application, when "static contact" is used to describe spatial distribution or relative position with the moving contact, it should be understood to specifically refer to the portion of the static contact that contacts the moving contact.

[0098] In the claims and description of this utility model, unless otherwise specified, the term "common stationary contact" shall be interpreted as: a stationary contact shared by at least one switch in the first switch group and at least one switch in the second switch group, which provides a stationary contact point for two independent switch circuits simultaneously through an integrated structure.

[0099] In the claims and description of this utility model, unless otherwise specified, the term "static contact portion" shall be interpreted as: a specific functional area on the common static contact portion that is provided separately for direct contact with the moving contact portion of each of its respective switches.

[0100] In the claims and description of this utility model, unless otherwise specified, the term "first contact portion" shall be interpreted as: the static contact portion on the common static contact that mates with the moving contact of the first switch group.

[0101] In the claims and description of this utility model, unless otherwise specified, the term "second contact portion" shall be interpreted as: the static contact portion on the common static contact that mates with the moving contact of the second switch group.

[0102] In the claims and description of this utility model, unless otherwise specified, the term "connecting part" shall be interpreted as: a structural part on the common stationary contact member used to connect the first contact part and the second contact part, and to form them into a whole. This part is at least partially injection molded integrally with the mounting base to achieve a stable fixation of the entire common stationary contact member.

[0103] In the claims and description of this utility model, unless otherwise specified, the term "sheet-like structure" should be interpreted as: a component shape whose size in one dimension (thickness) is much smaller than that in the other two dimensions. In this application, it defines the various parts of the common static contact element, intending to minimize its space occupation while ensuring sufficient conductive cross-sectional area.

[0104] In the claims and description of this utility model, unless otherwise specified, the term "terminal" shall be interpreted as: a pre-set structural part on a stationary contact, connector, or moving contact that is electrically connected to a connection terminal, wherein the connection terminal is a component for leading out to the outside of the relay and electrically connecting to an external circuit.

[0105] In the claims and description of this utility model, unless otherwise specified, the term "static contact" shall be interpreted as: an independent conductive component, one end of which is connected to the second contact portion of the common static contact, and the other end of which forms a terminal, the function of which is to provide a path for external electrical connection to the common static contact.

[0106] In the claims and description of this utility model, unless otherwise specified, the term "injection molding as a whole" shall be interpreted as: a manufacturing process in which one or more preforms (such as static contact parts or connectors) are placed in a mold, and then molten plastic is injected. After the plastic cools and solidifies, the preforms are firmly bonded to the plastic matrix to form a single, integral component.

[0107] In the claims and description of this utility model, unless otherwise specified, the term "mounting base" shall be interpreted as: a basic structural component in the contact portion, whose main function is to provide a precise and stable mounting reference for these components by injection molding them together with various stationary contacts, connectors, etc.

[0108] In the claims and description of this utility model, unless otherwise specified, the term "partition wall" shall be interpreted as: a wall-shaped protrusion structure provided on the mounting base, located between the first switch group and the second switch group, used to increase the creepage distance between the two switch groups, and can serve as a mounting support for the common stationary contact.

[0109] In the claims and description of this utility model, unless otherwise specified, the term "base" shall be interpreted as: the main component of the mounting base, usually made of plastic, and formed by injection molding together with various stationary contacts.

[0110] In the claims and description of this utility model, unless otherwise specified, the term "connector" shall be interpreted as: a pre-formed metal component that is injection molded as an integral part of the base, the main function of which is to provide a high-strength and high-reliability fixed connection point for the moving contact.

[0111] In the claims and description of this utility model, unless otherwise specified, the term "riveting end" shall be interpreted as: a structural part on the connector specifically designed for press-fitting with the moving contact, which is usually exposed from the base to facilitate assembly operations.

[0112] In the claims and description of this utility model, unless otherwise specified, the term "connection hole" shall be interpreted as: a hole made in the connector for connecting to an external wiring structure (such as a bolt or terminal) to achieve an electrical path.

[0113] In the claims and description of this utility model, unless otherwise specified, the term "holding end" shall be interpreted as: the end of the connector used to receive the holding force of the external support fixture during the riveting operation. Its function is to directly transmit the riveting force to the fixture, thereby protecting the base from deformation or damage due to impact during assembly.

[0114] In the claims and description of this utility model, unless otherwise specified, the term "top holding hole" shall be interpreted as: a hole provided in the base body for allowing the top holding end of the connector to protrude therefrom so as to contact an external support fixture.

[0115] 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 application, its core components include a pushing member and a first elastic member.

[0116] 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 limiting part and the second limiting part, and is used to transmit the driving force from the drive part, and to provide support for the first elastic member.

[0117] 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.

[0118] In the claims and description of this utility model, unless otherwise specified, the term "first limiting 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 facing 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.

[0119] In the claims and description of this utility model, unless otherwise specified, the term "second limiting 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.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] Example 1

[0125] Example 1 relates to a relay, such as Figure 1 As 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.

[0126] 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.

[0127] 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.

[0128] like Figure 1 As shown, the contact portion 100 includes a mounting base 150 and 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 In this embodiment, the mounting base 150 serves as the mounting foundation for the moving and stationary contacts within each switch in the contact portion, and the mounting base 150 is fixedly connected to the housing. The connection method can be fastener connection, snap-fit, welding, etc.

[0129] 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, and the shared moving contact 131 shares 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 and are integrally injection molded with the mounting base 150. 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 regarded 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.

[0130] In the first switch group 111, the common moving contact 137 is adapted to be closed or both open respectively with the stationary contacts 141 on both sides of its operating direction. (Refer to...) Figure 1 , Figure 2 and Figure 7In 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.

[0131] Each movable contact includes a fixed end 138 fixed relative to the mounting base 150 and a movable end 139 movable relative to the mounting base 150; the fixed end 138 is fixedly connected to the mounting base 150; the movable end 139 is adapted to move relative to the fixed end 138 of the movable contact to close or open with the corresponding stationary contact 141. Specifically, in embodiment one, the common movable contact 137 adopts a flexible movable contact 131, such as... Figure 1 and Figure 2 As shown, the flexible moving contact 131 includes a fixing part 134, an actuating part 135, and a flexible connecting part 136. The fixing part 134 is fixed relative to each stationary contact 141 and is used to lead out the connecting terminal. The fixing part of the flexible moving contact is the fixed end 138 of each moving contact, and the actuating part is the movable end 139 of each moving contact.

[0132] In this embodiment, the fixing portion 134 of each flexible movable contact 131 extends along the X-axis direction, and is therefore perpendicular to the main movement direction of the movable contact 131, i.e., the Z-axis direction. The moving portion 135 is adapted to swing relative to the fixing portion 134 along the movement direction of the movable contact 131 to close or open with the stationary contact 141. The flexible connecting portion 136 connects the fixing portion 134 and the moving portion 135 and is adapted to bend. In this embodiment, the flexible movable 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 moving 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 moving portion 135, and the middle part of the laminated metal sheet forms the flexible connecting portion 136. In this embodiment, as a common movable contact 137 of the flexible movable contact 131, the two ends of its flexible connecting portion 136 are located at different positions along the movement direction of the common movable contact 137, especially the main movement direction Z-axis direction. One end of the flexible connecting part 136 connected to the actuating part 135 is located between the stationary contact 141 of the first switch 121 and the stationary contact 141 of the second switch 122 along the Z-axis direction. The other end of the flexible connecting part 136 connected to the fixed part 134 is located below the end of the flexible connecting part 136 connected to the actuating part 135 along the Z-axis direction. The actuating part 135 extends along the X-axis direction in the open state; that is, in the open state, the extension direction of the actuating part 135 is the length direction of the moving contact 131. The actuating part 135 can be connected to the pushing part 200, so that the moving contact 131 can be driven by the pushing part 200 to swing relative to the fixed part 134. The moving contact 132 of the moving contact 131 is provided on the actuating part 135.

[0133] 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 used to connect with the pushing part 200 can also be directly formed by the part of the actuating part 135 on which the movable contact 132 is installed. In this case, the actuating part 135 does not need to extend other parts to form the pushed part 133. 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 on the movable contact 131 used for current carrying and ensure a uniform width at each position, without needing to reduce it at local positions.

[0134] 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.

[0135] Furthermore, at least one switch in the first switch group 111 shares a stationary contact 141 with at least one switch in the second switch group 112, and the shared stationary contact 141 forms a common stationary contact 143. Specifically, 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 2 , Figure 4 and Figure 5 The 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.

[0136] In this configuration, all moving contacts 131 are linked together so that the contact portion 100 has at least three contact states. The first contact state is when the common moving contact 137 and the common stationary contact 143 in the first switch group 111 are closed and the moving contact 131 and the common stationary contact 143 in the second switch group 112 are open. The second contact state is when the common moving contact 137 and another stationary contact 141 in the first switch group 111 are closed and the moving contact 131 and the common stationary contact 143 in the second switch group 112 are closed. The third contact state is when all switches in the first switch group 111 and the second switch group 112 are open. Specifically, the oscillation 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 the same. That is, when the actuating part 135 of the common moving contact 137 rises along the Z-axis, the actuating part 135 of the moving contact 131 of the first switch 121 also rises along the Z-axis. At this time, the first switch 122 is closed and the third switch 123 is open. Conversely, when the actuating part 135 of the common moving contact 137 moves downward along the Z-axis, the actuating part 135 of the moving contact 131 of the third switch 123 also moves downward along the Z-axis. At this time, the first switch 121 is open, the second switch 122 is closed, and the third switch 123 is closed. 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 closed state of the first switch 121 is defined as the first contact state, the closed state of only the second switch 122 and the third switch 123 is defined as the second contact state, and the open state of all three switches is defined as the third contact state. Figure 7 and Figure 8 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 contact state.

[0137] Reference Figure 9 and Figure 10The common stationary contact 143 has a stationary contact portion 144 corresponding to its two corresponding switches. The stationary contact portion 144 is provided with a stationary contact 142 for cooperating with the moving contact 132 on the moving contact 131. The closing directions of the switches corresponding to the two stationary contact portions 144 are opposite. Specifically, the common stationary contact 143 has a stationary contact portion 144 corresponding to the first switch 121 and the third switch 123. Both of the stationary contact portions 144 are provided with stationary contacts 142. The first end of the stationary contact 142 on the stationary contact portion 144 corresponding to the common moving contact 137 in the first switch 121 is set towards the moving contact 142 of the moving contact 131 along the Z-axis. The second end of the stationary contact 142 on the stationary contact portion 144 corresponding to the moving contact 131 in the third switch 123 is set towards the moving contact 131 along the Z-axis. The first end and the second end are oriented oppositely in the Z-axis direction. Therefore, the closing directions of the switches corresponding to the two stationary contact portions 144 are opposite. When the movable ends 139 of the two moving contacts 131 swing to the same position along the Z-axis, the contact states of the first switch 121 and the third switch 123 are opposite. For example, when the first switch 121 is closed, the third switch 123 is open, and vice versa.

[0138] Reference Figure 1 and Figure 3 Both the stationary contact 141 and the moving contact 131 in the contact portion 100 are fixedly connected to the mounting base 150. The mounting base 150 includes a base body 151 and a connector 152. The base body 151 is made of plastic, and the connector 152 is made of metal. The stationary contact 141 and stationary contact head 148 (see description below) are injection molded integrally with the base body 151, and the connector 152 is injection molded integrally with the base body 151. The fixed end 138 of the moving contact 131 is then fixedly connected to the connector 152. The connection between the moving contact 131 and the connector 152 can be achieved by riveting, welding, screwing, or using fasteners. In Embodiment 1, the moving contact 131 and the connector 152 are fixedly connected 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 152 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 relay in any direction as needed.

[0139] At least a portion of the common static contact 143 is integrally molded with the mounting base 150 via injection molding. (Refer to...) Figure 9 and Figure 10In Embodiment 1, the common stationary contact 143 is an integral structure, including a first contact portion 145 that cooperates with the switch of the first switch group 111, a second contact portion 146 that cooperates with the switch of the second switch group 112, and a connecting portion 147 connecting the first and second contact portions 146; the common stationary contact 143 is injection molded integrally with the mounting base 150 at least in terms of the connecting portion 147; the first contact portion 145 and the second contact portion 146 are provided with stationary contacts 142 for cooperating with the moving contact 132 on the moving contact 131. (Refer to...) Figure 12 and Figure 13 In this embodiment, the second contact portion 146 and the connecting portion 147 on the common stationary contact 143 are injection molded together with the seat body 151 of the mounting base 150.

[0140] Reference Figure 5 The first switch group 111 and the second switch group 112 are arranged in the first direction; refer to Figure 9 and Figure 10 The first contact portion 145, the connecting portion 147, and the second contact portion 146 of the common stationary contact 143 are arranged sequentially along a first direction, the connecting portion 147 extends in a second direction, and the first contact portion 145 and the second contact portion 146 are staggered in the second direction; the second direction is perpendicular to the first direction. Further, referring to... Figure 9 and Figure 10 The first contact portion 145 and the second contact portion 146 are also staggered in the third direction, and they are provided with stationary contact points 142 on the opposite side; the connecting portion 147 extends in the third direction; the third direction is perpendicular to both the first direction and the second direction.

[0141] Specifically, the first contact portion 145, the second contact portion 146, and the connecting portion 147 are all sheet-like structures; the first contact portion 145 and the second contact portion 146 are perpendicular to a third direction; the connecting portion 147 is perpendicular to a first direction. In Embodiment 1, the common stationary contact 143 is a conductive metal part integrally stamped and bent. This common stationary contact 143 can simultaneously serve as the stationary contact 141 of both the first switch and the third switch. Therefore, the common stationary contact 143 is provided with the first contact portion 145 and the second contact portion 146. The first contact portion 145 and the second contact portion 146 are generally parallel sheet-like platforms, with stationary contact points 142 on their extended surfaces, and their principal planes are perpendicular to the Z-axis direction. The connecting portion 147 connects the first contact portion 145 and the second contact portion 146, extending mainly within the plane defined by the X-axis and Z-axis directions, thereby achieving spatial misalignment of the first contact portion 145 and the second contact portion 146 in the X-axis and Z-axis directions.

[0142] In addition, refer to Figure 11 , Figure 12 and Figure 13The mounting base 150 is provided with a partition wall 153; the partition wall 153 is located between the first switch group 111 and the second switch group 112 along a first direction; the connecting portion 147 of the common stationary contact 143 is at least partially injection molded integrally with the partition wall 153. Furthermore, in Embodiment 1, the two stationary contacts 141 corresponding to the two switches in the first switch group 111 are arranged along a third direction on both sides of the moving contact 131, where one stationary contact 141 is a common stationary contact 143, the first contact portion 145 of which extends from the partition wall 153 and corresponds to the common moving contact 137, and the other stationary contact 141 is injection molded integrally with the mounting base 150; the stationary contact 141 corresponding to one switch in the second switch group 112 is a common stationary contact 143, the second contact portion 146 of which extends from the partition wall 153 and corresponds to the moving contact 131 of that switch, and is injection molded integrally with the mounting base 150. In Embodiment 1, the partition wall 153 of the mounting base 150 is a raised wall-like structure formed on the base body 151. It extends in the X-axis direction, protrudes and extends in the Z-axis direction, and has a certain thickness in the Y-axis direction. It separates the first switch group 111 and the second switch group 112 in the Y-axis direction, and its height in the Z-axis direction is approximately adapted to the range defined by the two switch groups. The extension direction of the connecting portion 147 of the common stationary contact 143 is generally consistent with that of the partition wall 153. At the same time, the connecting portion 147 of the common stationary contact 143 is firmly embedded in the partition wall 153 of the mounting base 150 during the injection molding process. Along the Y-axis direction, the first contact portion 145 extends from the partition wall 153 toward the first switch group 111, and the second contact portion 146 extends from the partition wall 153 toward the second switch group 112. Since the second contact portion 146 is closer to the lower part of the base 151 along the Z-axis direction, the second contact portion 146 is directly injection molded with the base 151.

[0143] Reference Figure 7 and Figure 8 The terminals 161 of each stationary contact 141 in the first switch group 111 and the second switch group 112 for external wiring are led out in the same direction to the mounting base 150 and exposed on the outer surface of the relay.

[0144] Reference Figure 7 and Figure 9 In the first switch group 111, at least one stationary contact 141, excluding the common stationary contact 143, is integrally injection molded with the mounting base 150 and is cylindrical. One end of the stationary contact 141 extends out of the mounting base 150 and forms a terminal 161, while the other end extends out of the mounting base 150 and is provided with a stationary contact 142 for cooperating with the moving contact 132 on the common moving contact 137. In Embodiment 1, the stationary contact 141 is an integral metal cylinder extending along the Z-axis direction, with its upper end (e.g., Figure 1Part of it is exposed on the mounting base 150, and a stationary contact 142 is provided on the end face for cooperating with the upper moving contact 132 of the common moving contact 137. Its lower end extends out of the bottom surface of the mounting base 150 and is used directly as a wiring terminal 161.

[0145] Reference Figure 8 and Figure 10 The second switch assembly 112 also includes a stationary contact 148 integrally injection molded with the mounting base 150. One end of the stationary contact 148 is connected to the second contact portion 146 of the common stationary contact 143, and the other end protrudes from the mounting base 150 to form a terminal 161. In Embodiment 1, the second contact portion 146 of the common stationary contact 143 itself does not directly lead out to the terminal 161, but rather achieves external electrical connection through a stationary contact 148. Figure 10 As shown, the stationary contact 148 is an independent metal part. Its upper end is firmly connected to the second contact portion 146 of the common stationary contact 143 before injection molding, and its lower end is designed as a terminal 161 that can protrude from the bottom surface of the mounting base 150. During the injection molding process, the connection portion 147 between the stationary contact 148 and the common stationary contact 143, as well as the main body of the stationary contact 148, are embedded in the mounting base 150. Alternatively, the stationary contact 148 may simply touch the second contact portion 146 of the common stationary contact 143 to form an electrical connection before injection molding, and during the injection molding process, the mounting base 151 itself fixes the stationary contact 148 and the common stationary contact 143, connecting them into a whole.

[0146] Reference Figure 7 and Figure 8 The connector 152 defines an extending direction. Along this extending direction, one end of the connector 152, or a portion thereof, protrudes from the base 151 to form a riveting end 156. The movable contact 131 is press-fitted to the riveting end 156 along the extending direction. The connector 152 has a connecting hole 154 for external connection at one end along the extending direction. The connector 152 has a protrusion 155 that protrudes outward and perpendicular to the extending direction. The protrusion 155 is at least partially embedded in the base 151, and forms the riveting end 156 at one end of the protrusion 155 along the extending direction and a supporting end 157 at the other end of the extending direction. The supporting end 157 protrudes from the base 151. (See reference...) Figure 11The base 151 has a top-holding hole 158 along its extending direction for exposing the top-holding end 157. In Embodiment 1, the connector 152 is generally a columnar member with an open countersunk hole inside, which is the connection hole 154. The connection hole 154 can be connected to an external circuit component via a stud or the like to achieve electrical connection, thereby allowing the relay to be installed to an external circuit component. Similarly, the connection hole 154 can also be provided in the stationary contact 148 and the independent columnar stationary contact 141. The connector 152 extends along the Z-axis and is mostly injection molded integrally with the base 151. One end protrudes from the surface of the base 151, forming a riveting end 156. The riveting end 156 can have a conventional knurled structure like a press-fit nut or a pointed protrusion. The fixing portion 134 of the movable contact 131 can be press-fitted to the riveting end 156 of the connector 152 along its extension direction, thereby fixing the movable contact 131 to the mounting base 150 and simultaneously establishing an electrical connection between the movable contact 131 and the connector 152. A protrusion 155, perpendicular to the Z-axis, is provided on the outer side of the connector 152 near the riveting end 156. The protrusion 155 can surround the outer periphery of the connector 152. The downward end of the protrusion 155 along the Z-axis forms the aforementioned riveting end 156, and the upward end forms a supporting end 157. Meanwhile, a support hole 158 is provided on the base 151 along the Z-axis direction. The upper end of the support hole 158 is open, exposing the support end 157. When the moving contact 131 is riveted, the external tooling fixture can directly support the support end 157 through the support hole 158 on the base 151. In this way, the huge impact force generated during riveting is directly borne by the metal connector 152 and the external tooling, and is not transmitted to the relatively fragile plastic base 151, thereby effectively preventing the base 151 from cracking or deforming during assembly and preventing the connector hole 154 from deforming.

[0147] In addition, refer to Figure 7 and Figure 8 The connector 152 defines an extension direction. In one possible example, along the extension direction, one end of the connector 152 forms a terminal for external wiring. Specifically, the connector 152 is a columnar structure extending in the Z-axis direction. A section of it exposed on the surface of the base 151 in the Z-axis direction can form a terminal for external wiring to connect to external connection terminals. The direction in which the connection terminals lead out of the relay can be set as needed for electrical connection with external circuit components.

[0148] Furthermore, referring to Figure 9At least a portion of the surface of the portion of the stationary contact 141 embedded in the mounting base 150 in the first switch assembly 111 is provided with a pattern 162 to increase the contact area with the mounting base 150 and to prevent the stationary contact 141 from rotating relative to the mounting base 150. Also, refer to... Figure 7 and Figure 8 At least a portion of the surface of the part of the connector 152 that is embedded in the base 151 is provided with a pattern 162 to increase the contact area with the base 151 and to prevent the connector 152 from rotating relative to the mounting base 150. Furthermore, referring to... Figure 10 At least a portion of the surface of the part of the stationary contact 148 embedded in the mounting base 150 is also provided with a pattern 162. To ensure a more secure bond between the metal prefabricated parts such as the stationary contact 141, stationary contact 148, and connector 152 and the plastic mounting base 150, these metal parts have a pattern 162 machined on the surface of the portion embedded in the plastic. Figure 9 and Figure 10 The cross-hatching pattern shown on the stationary contact 148 can be knurled, grooved, or raised. During injection molding, molten plastic fills the gaps in these patterns 162, and after cooling and solidification, forms a strong mechanical interlocking structure.

[0149] In this embodiment, the contact portion 100 includes at least two switches. The length direction (i.e., the X-axis direction) of each movable contact 131 is 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.

[0150] The actuating part 200 is connected to the moving contact 131 of each switch in the contact part 100 to actuate each moving contact 131 to close or open with the corresponding stationary contact 141. The structure of the actuating part 200 is described in detail below.

[0151] Reference Figures 1 to 4 The pushing part 200 includes two pushing units 220 and two rotating members 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 is adapted to be driven to move in a predetermined direction to push at least one moving contact 131 to close or open with the stationary contact 141. 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 linear or oscillating. 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 to provide the moving contact 131 with the contact pressure to close with the stationary contact 141 when the moving contact 131 closes with the stationary contact 141.

[0152] In Embodiment 1, the structures of the pushing units 220 used in the first switch group 111 and the second switch group 112 are different, but both pushing units 220 swing along a predetermined direction, and the first direction is perpendicular to the tangent of the direction of motion of the pushing unit 220 at at least one position along the predetermined direction. 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 the Z-axis direction. When the moving contact 131 is in the third contact 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 this midpoint is perpendicular to the X-axis direction, that is, the tangent is along the Z-axis direction.

[0153] First, the driving unit 220 and its auxiliary structures in the first switch group 111 will be described. (Refer to...) Figure 1 and Figure 2In 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, thereby preventing the first elastic member 223 from disengaging from the pusher body 222 and the common moving contact 137. The pusher body 222 can drive the moving portion 135 of the common moving contact 137 to swing by applying force to the first elastic member 223. The connecting body 221 can be integrally formed with the pusher body 222 or separately fixedly connected. The connecting body 221 can cooperate with the rotating member 210 to make the pusher unit 220 move as a whole. The pusher 222 has side walls 228 perpendicular to the first direction, which is 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.

[0154] Reference Figure 1 and Figure 2 The push unit 220 in the first switch group 111 can swing relative to the mounting base 150 via a metal swing arm 230 and a rotating shaft 240. There are two metal swing arms 230, which are flat and elongated, extending along the X-axis. A shaft connecting portion 231, an extension portion 232, and a push connecting portion 233 are provided along the length of each metal swing arm 230. The shaft connecting portion 231 is pivotally connected to the rotating shaft 240, and the rotating shaft 240 is fixedly or pivotally connected to the mounting base 150, thereby allowing the metal swing arm 230 to swing relative to the mounting base 150 around the rotating shaft 240. The extension portion 232 connects the shaft connecting portion 231 and the push connecting portion 233. The push connection 233 is connected to the side wall 228 of the push body 222 to achieve a fixed connection between the metal swing arm 230 and the push body 222. The push connection 233 can be connected to the side wall 228 of the push body 222 by insert injection molding, riveting, welding, bonding, etc., or it can be connected to the intermediate component fixed to the push body 222 by riveting, welding, or bonding. The metal swing arm 230 and the rotating shaft 240 can be made of metal.

[0155] Reference Figure 1 and Figure 2The rotating member 210 is provided with a first mating portion, which can be driven by the driving portion 300 to rotate around a first axis. The pushing member 226 is provided with a second mating portion that slides in a direction perpendicular to the first axis, so that it can be driven by the rotating member 210 to swing around a second axis parallel to the first axis or move linearly in a third direction. 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 first axis. One of the first and second mating portions is a sliding groove 227 extending perpendicular to the first axis, and the other is a sliding pin 212 extending into the sliding groove 227 along the direction of the first axis, the sliding pin 212 being offset relative to the first 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 14 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 15 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 first 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 is restricted by the metal swing arm 230 and the rotating shaft 240, and 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 7 As 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 first 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 the third contact state. Then the rotating part 210 rotates counterclockwise by 90°, and the sliding pin 212 swings around the first axis by 90°. The sliding pin 212 is located 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.

[0156] 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 first axis. Considering the error during operation, the force exerted by the sliding groove 227 on the sliding pin 212 can also be considered to be close to the first 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.

[0157] 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 top wall of the pushing body 222, 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.

[0158] Next, the actuation unit 220 and its associated structures in the second switch group 112 will be described. (Refer to...) Figure 3 and Figure 4The 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. The upper end of the first elastic member 223 is connected to the top wall of the actuating body 222 in an abutting manner, and the lower end is connected to the actuating part 135 of the moving contact 131 in an abutting 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 protrude towards each other along the Y-axis direction. 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.

[0159] Furthermore, in Embodiment 1, the actions of the two push units 220 corresponding to the first switch group 111 and the second switch group 112 are linked together, so that the moving contacts 131 in the first switch group 111 and the second switch group 112 have the same motion state. Specifically, both push units 220 are driven by the torque output by the drive part 300 transmitted to the rotating member 210, and the two rotating members 210 are in the same position at the same time. For example, when the rotating member 210 linked to the push unit 220 corresponding to the first switch group 111 rotates to the highest position along the Z-axis, the common moving contact 137 swings upward to close the first switch 121, and at the same time, the moving contact 131 in the second switch group 112 also swings upward under the action of the other rotating member 210 on the push unit 220 to open the third switch 123; or, when the rotating member 210 linked to the push unit 220 corresponding to the first switch group 111 rotates to the lowest position along the Z-axis, the common moving contact 137 swings downward to close the second switch 122, and at the same time, the moving contact 131 in the second switch group 112 swings upward to open the third switch 123; or, when the rotating member 210 linked to the push unit 220 corresponding to the first switch group 111 rotates to the lowest position along the Z-axis, the common moving contact 137 swings downward to close the second switch 122, and at the same time, the moving contact 131 in the second switch group 112 swings upward to open the third switch 123. At the same time, the moving contact 131 in the second switch group 112 also swings downward under the action of another rotating member 210 on the pushing unit 220, causing the third switch 123 to close; or, when the rotating member 210 linked to the pushing unit 220 of the first switch group 111 rotates to the middle position along the Z-axis, the common moving contact 137 is located in the middle of the two corresponding stationary contacts 141, the first switch 121 and the second switch 122 are open, and at the same time, the moving contact 131 in the second switch group 112 also swings under the action of another rotating member 210 on the pushing unit 220, causing the third switch 123 to open.

[0160] 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 150 by a swing block 250 and a rotating shaft 240. 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 240, which is then fixed or pivotally connected to the mounting base 150.

[0161] Furthermore, the aforementioned pushing unit 220 is driven by a driving part 300 with a positioning locking function or driven by a transmission mechanism with a mechanical self-locking function, so as to push at least one moving contact 131 to close or open with the stationary contact 141 and lock the state of the corresponding moving contact 131 at least in the closed position.

[0162] The drive unit 300 includes a motor with a locking function; the pusher 226 is driven by the rotating member 210, which is driven by the motor to rotate around a first axis. Specifically, the motor with the 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 when the power is off, the motor's own stepping holding torque or mechanical brake can prevent the rotating member 210 from rotating unexpectedly.

[0163] In addition, refer to Figure 7 and Figure 14 The pusher 226 is provided with a first limiting part 224, which is provided corresponding to the closing direction of the moving contact 131 and extends a preset length along the Y-axis direction, so as to contact or approach the moving contact 131 along the closing direction of the moving contact 131 when the moving contact 131 and the stationary contact 141 are closed, and limit the distance of separation between the moving contact 131 and the stationary contact 141. (Refer to...) Figure 4 and Figure 7 For the two different pushers 222, the number and structure of the first limiting part 224 are different. The pusher 222 of the first switch group 111 has two first limiting 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 limiting part 224 located above its moving contact 131 in the Z-axis direction (e.g., Figure 1 The first limiting part 224 can be integrally formed on the pushing body 222.

[0164] The first limiting part 224 extends a predetermined length along the Y-axis, which can be in two ways. The first way can be 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 each 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 4In 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 both 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 14 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 limiting portion 224 extending a predetermined length along the Y-axis. Furthermore, in the second case, the two edges of the wall-like first limiting portion 224 in the Y-axis direction can be correspondingly connected to the two sidewalls 228 of the pusher 222, that is, the first limiting 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.

[0165] Based on the above, it can be understood that, referring to Figure 7 and Figure 14 In 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.

[0166] It should be noted that although the first limiting part 224 is limited to a preset length along the Y-axis, this only indicates that the first limiting part 224 as a whole has an extending tendency in the Y-axis direction, and does not mean that the first limiting part 224 can only extend along the Y-axis direction. For example, the first limiting 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.

[0167] In the first embodiment, the first limiting 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 limiting part 224 on both sides of the stationary contact 141 in both closing directions of the common moving contact 137.

[0168] 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 limiting 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 limiting portion 224 can be set to be tilted at a certain angle relative to the reference plane. Taking the first limiting portion 224 located above the moving contact 131 along the Z-axis as an example, the projection of the lower edge of the first limiting portion 224 in the direction perpendicular to the Z-axis is a straight line with a certain angle to the Y-axis direction.

[0169] 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 limiting portion 224 is perpendicular to the X-axis direction. That is... Figure 7 The structure shown, taking the first limiting part 224 located above the moving contact 131 along the Z-axis as an example, at this time the projection of the lower edge of the first limiting part 224 in the direction perpendicular to the Z-axis is a straight line parallel to the Y-axis.

[0170] Furthermore, the pusher 226 of the first switch assembly 111 is also provided with a second limiting part 225, which is configured 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 limiting part 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 limiting part 224 of the common moving contact 137 corresponding to any closing direction is the same as the second limiting part 225 corresponding to the other closing direction.

[0171] In the above embodiments, each stationary contact 141 in the first switch group 111 is integrally molded with the mounting base 150 by injection molding, and they cooperate on both sides of a common moving contact 137, which improves the problems of assembly accuracy and structural stability of the traditional relay contact part 100. In particular, by integrally molding each stationary contact 141 with the mounting base 150 by injection molding, the position of each stationary contact 141 can be guaranteed by a high-precision injection mold. During the injection molding process, the placement of each pre-molded stationary contact 141 can be precisely set. After the plastic material cools and solidifies, the position of each stationary contact 141 within the mounting base 150 can be fixed. This eliminates the cumulative errors caused by part tolerances, tooling positioning errors, and assembly operation errors when fixing the stationary contacts 141 one by one using traditional assembly methods. This ensures precise control of the fit between the moving contact 131 and the different stationary contacts 141, allowing the moving contact 131 to form a high-precision fit with the stationary contacts 141 in both the open and two closed positions. This provides structural protection for the relay to obtain reliable engagement and release characteristics and electrical performance, and helps reduce the electrical losses of the relay. Furthermore, the integral structure formed by injection molding means that each stationary contact 141 is no longer isolated and fixed at a certain point in the mounting base 150, but is largely embedded in the plastic material and formed as a whole. When the relay is in operation, the impact force generated by the closing of the moving contact 131 and the stationary contact 141, as well as the force generated by vibration or external impact during long-term operation, are effectively distributed across the entire mounting base 150, rather than concentrated on a single vulnerable connection point. This effectively prevents the stationary contact 141 from shifting or loosening over long-term use, ensuring not only the stable operation of the relay but also the precision of the fit between the stationary contact 141 and the moving contact 131 over extended periods. Furthermore, since the stationary contact 141 is pre-assembled on the mounting base 150, subsequent assembly only requires the assembly of the moving contact 131, simplifying the assembly process, reducing time, and improving assembly efficiency.

[0172] In at least one embodiment, in the first switch group 111, the common moving contact 137 is adapted to be closed or both open with the stationary contacts 141 on both sides of its direction of action.

[0173] Because the first switch group 111 uses a common moving contact 137, three independent circuit states can be achieved through this common moving contact 137: forming a closed circuit with one of the stationary contacts 141 located on both sides of its operating path, or maintaining a predetermined electrical gap with both stationary contacts 141 and being in an open state. In addition to the traditional state of switching the two stationary contacts 141 closed, the fully open state allows the relay to meet requirements such as safety isolation during circuit maintenance and independent and precise control of each battery cell during the pre-charging process of new energy vehicle batteries, significantly broadening the application range of the relay. Furthermore, because the stationary contacts 141 and the mounting base 150 are injection molded as a single unit, the stationary contacts 141 have higher installation accuracy and stability, ensuring that the common moving contact 137 maintains a stable contact gap with both stationary contacts 141 when both are disconnected, enabling better control of the contact gap accuracy and ensuring reliable disconnection of the common moving contact 137 from both stationary contacts 141.

[0174] In at least one embodiment, at least one switch forms a second switch group 112; at least one switch in the first switch group 111 and at least one switch in the second switch group 112 share a stationary contact 141 and the shared stationary contact 141 forms a common stationary contact 143.

[0175] Since at least one switch in the first switch group 111 and at least one switch in the second switch group 112 share a common stationary contact 143, and a single stationary contact 141 serves two independent switch circuits simultaneously, the total number of required parts is reduced, installation procedures and time are reduced, and space utilization is improved. This makes the internal structure of the relay more compact, and more complex circuit functions such as dual-circuit parallel or series connection can be achieved without significantly increasing the overall size of the relay. Furthermore, the precise positioning of the two switches is achieved by injection molding the same stationary contact 141 and the mounting base 150, which further improves the overall fitting accuracy of the relay contact part 100.

[0176] In at least one embodiment, the common stationary contact 143 has a stationary contact portion 144 corresponding to the two switches to which it belongs. The stationary contact portion 144 is provided with a stationary contact 142 for cooperating with the moving contact 132 on the moving contact 131. The closing directions of the switches corresponding to the two stationary contact portions 144 are opposite.

[0177] Since the common stationary contact 143 is provided with stationary contact parts 144 with opposite closing directions for the two switches to which it belongs, it provides a basis for the series and parallel control of the first switch group 111 and the second switch group 112. At the same time, it can avoid interference between the two moving contacts 131 when they are in motion, which is conducive to the further miniaturization of the relay.

[0178] In at least one embodiment, all moving contacts 131 are linked together so that the contact portion 100 has at least three contact states: the first contact state is when the common moving contact 137 and the common stationary contact 143 in the first switch group 111 are closed and the moving contact 131 and the common stationary contact 143 in the second switch group 112 are open; the second contact state is when the common moving contact 137 in the first switch group 111 is closed and the stationary contact 141 located on the other side of the common moving contact 137 relative to the common stationary contact 143 is closed and the moving contact 131 and the common stationary contact 143 in the second switch group 112 are closed; and the third contact state is when all switches in the first switch group 111 and the second switch group 112 are open.

[0179] Since the closed states of the common moving contact 137 and the different stationary contacts 141 in the first switch group 111 of the second switch group 112 correspond to the closed and open states of each switch in the second switch group 112, that is, when the common moving contact 137 is closed with one side of the stationary contact 141, it corresponds to the closed state of each switch in the second switch group 112, and when the common moving contact 137 is closed with the other side of the stationary contact 141, it corresponds to the open state of each switch in the second switch group 112, the selective switching between series and parallel circuits can be realized inside the relay through the correspondence between the switch states, providing the necessary hardware foundation for specific applications such as intelligent switching of series and parallel states of battery packs.

[0180] In at least one embodiment, at least a portion of the common stationary contact 143 is integrally molded with the mounting base 150 by injection molding.

[0181] Since at least a portion of the common stationary contact 143 is integrally molded with the mounting base 150 by injection molding, this means that the common stationary contact 143 does not have to be completely embedded in the mounting base 150. The contact portion of the common stationary contact 143 can be exposed more prominently from the mounting base 150, which can also reduce the overall volume of the mounting base 150. This is beneficial for miniaturization of the relay in the Y-axis direction and for improving the utilization rate of the internal space of the relay.

[0182] In at least one embodiment, the common stationary contact 143 is an integral structure, which includes a first contact portion 145 that cooperates with the switch of the first switch group 111, a second contact portion 146 that cooperates with the switch of the second switch group 112, and a connecting portion 147 that connects the first and second contact portions 146; the common stationary contact 143 is injection molded integrally with the mounting base 150 at least by means of the connecting portion 147; the first contact portion 145 and the second contact portion 146 are provided with stationary contacts 142 for cooperating with the moving contacts 132 on the moving contact 131.

[0183] By designing the common stationary contact 143 as an integral structure comprising the first contact portion 145, the second contact portion 146, and the connecting portion 147, the number of parts is simplified and the structure is optimized, thereby improving the relative positional accuracy between the first contact portion 145 and the second contact portion 146. By injection molding at least a portion of its connecting portion 147 integrally with the mounting base 150, a stable mounting reference is provided for the entire common stationary contact 143, improving the positional accuracy of the common stationary contact 143 within the mounting base 150.

[0184] In at least one embodiment, the first switch group 111 and the second switch group 112 are arranged in a first direction; the first contact portion 145, the connecting portion 147, and the second contact portion 146 of the common stationary contact 143 are arranged sequentially along the first direction, the connecting portion 147 extends in the second direction, and the first contact portion 145 and the second contact portion 146 are staggered in the second direction; the second direction is perpendicular to the first direction.

[0185] Because the first switch group 111 and the second switch group 112 are staggered in the first direction, and the various parts of the common stationary contact 143 are staggered in the first and second directions, and the connecting part 147 extends in the second direction, the efficient layout of the common stationary contact 143 is achieved in the compact internal space of the relay, which is conducive to the miniaturization of the relay as a whole.

[0186] In at least one embodiment, the first contact portion 145 and the second contact portion 146 are arranged in a staggered manner in the third direction, and both are provided with stationary contact points 142 on opposite sides; the connecting portion 147 extends in the third direction; the third direction is perpendicular to both the first direction and the second direction.

[0187] By utilizing the third-party space to arrange the first contact 145, the connecting part 147, and the second contact 146, the conventional planar layout is transformed into a three-dimensional layout, which realizes the effective utilization of the internal space of the relay in the third-party direction. This is beneficial for achieving more complex functions without increasing the floor space and helps to miniaturize the overall structure of the relay.

[0188] In at least one embodiment, the first contact portion 145, the second contact portion 146, and the connecting portion 147 are all sheet-like structures; the first contact portion 145 and the second contact portion 146 are perpendicular to a third direction; and the connecting portion 147 is perpendicular to a first direction.

[0189] Because the first contact portion 145, the second contact portion 146, and the connecting portion 147 are designed as sheet-like structures, meaning the common stationary contact 143 is essentially a component with a relatively small thickness, this shape limitation can significantly reduce the space occupied by the common stationary contact 143 while ensuring a high current-carrying area. Furthermore, the extension directions of the first contact portion 145, the second contact portion 146, and the connecting portion 147 on the common stationary contact 143 are defined. The extension structure of the connecting portion 147 perpendicular to the first direction can fully utilize the space in the third direction, while the extension structures of the first contact portion 145 and the second contact portion 146 perpendicular to the third direction can ensure a good contact fit with the corresponding moving contact.

[0190] In at least one embodiment, the mounting base 150 is provided with a partition wall 153; the partition wall 153 is located between the first switch group 111 and the second switch group 112 along a first direction; the connecting portion 147 of the common stationary contact 143 is at least partially injection molded integrally with the partition wall 153.

[0191] Because a partition wall 153 is provided on the mounting base 150 between the first switch group 111 and the second switch group 112, the creepage distance between the two switch groups is increased, effectively preventing the risk of short circuits caused by electric arcs or electrical breakdowns. This also allows the first switch group 111 and the second switch group 112 to be as close as possible, achieving a compact layout and saving space. Simultaneously, the connecting portion 147 of the common stationary contact 143 is integrally injection molded with the partition wall 153, providing robust mechanical support and precise positioning for the common stationary contact 143. Furthermore, by utilizing the existing partition wall 153, a stable installation of the common stationary contact 143 is achieved despite further occupying internal relay space, further improving the overall compactness of the relay structure.

[0192] In at least one embodiment, in the first switch group 111, two stationary contacts 141 corresponding to two switches are arranged along a third direction on both sides of the moving contact 131. One stationary contact 141 is a common stationary contact 143, the first contact portion 145 of which extends from the partition wall 153 and corresponds to the common moving contact 137. The other stationary contact 141 is injection molded integrally with the mounting base 150. In the second switch group 112, the stationary contact 141 corresponding to one switch is a common stationary contact 143, the second contact portion 146 of which extends from the partition wall 153 and corresponds to the moving contact 131 of the switch, and is injection molded integrally with the mounting base 150.

[0193] Since the first contact portion 145 of the common stationary contact 143 extends from the partition wall 153, and the second contact portion 146 is injection molded integrally with the mounting base 150, most of the common stationary contact 143 is fixed on the mounting base 150, thereby significantly improving the installation stability and anti-interference ability of the common stationary contact 143. The common stationary contact 143 is less likely to be displaced or shaken by external forces. At the same time, the first contact portion 145 extends directly from the partition wall 153, reducing the number or volume of parts required to fix the first contact portion 145, which is conducive to the efficient use of the internal space of the relay and ensures that the mounting base 150 can be reliably molded.

[0194] In at least one embodiment, the terminals 161 of each stationary contact 141 in the first switch group 111 and the second switch group 112 for external wiring are led out in the same direction to the mounting base 150 and exposed on the outer surface of the relay.

[0195] Since the terminals 161 of each stationary contact 141 in the first switch group 111 and the second switch group 112 are all led out in the same direction, it avoids the need to bend each stationary contact 141 in multiple directions, reducing copper loss. It also allows each stationary contact 141 to lead out the terminal 161 with a larger area. In the scheme with terminals, the connection strength and connection area with the terminals can be increased, especially the welding area during welding. This facilitates the electrical connection between the relay and the external circuit, reduces the design and manufacturing difficulty of the external circuit, and expands the application scenarios of the relay.

[0196] In at least one embodiment, at least one stationary contact 141, excluding the common stationary contact 143, which is integrally injection molded with the mounting base 150 in the first switch group 111, is columnar. One end of the stationary contact 141 is exposed in the mounting base 150 along its extension direction and forms a terminal 161, while the other end is exposed in the mounting base 150 and is provided with a stationary contact 142 for cooperating with the moving contact 132 on the common moving contact 137.

[0197] By designing the stationary contact 141 as a columnar shape and exposing one end directly as the wiring terminal 161, the contact and wiring functions are integrated. This reduces the number of parts and intermediate connection links, simplifies the structure, and lowers the contact resistance and failure risk caused by additional welding or connections. The columnar structure of the stationary contact 141 itself also has high mechanical strength, ensuring its stability during injection molding and use, and providing sufficient strength to resist the impact of the moving contact 131.

[0198] In at least one embodiment, the second switch assembly 112 further includes a stationary contact 148 integrally injection molded with the mounting base 150. One end of the stationary contact 148 is connected to the second contact portion 146 of the common stationary contact 143, and the other end is exposed in the mounting base 150 to form a terminal 161.

[0199] Because of the presence of the stationary contact 148, the common stationary contact 143 does not require a structure for leading out the terminal 161. Therefore, the molding process of the common stationary contact 143 is simpler, and it is also easier to integrate it with the mounting base 150 by injection molding. Furthermore, by leading out the terminal 161 through the independent stationary contact 148, the electrical connection from the common moving contact to the external wiring can be guaranteed to be stable and reliable.

[0200] In at least one embodiment, each movable contact 131 includes a fixed end 138 fixed relative to the mounting base 150 and a movable end 139 movable relative to the mounting base 150; the fixed end 138 is fixedly connected to the mounting base 150; the movable end 139 is adapted to move relative to the fixed end 138 of the movable contact to close or open with the corresponding stationary contact 141.

[0201] Since the fixed end 138 of the moving contact 131 is fixedly connected to the mounting base 150, the mounting base 150 can accurately position the fixed end 138 of the moving contact 131, thereby further ensuring that the gap between the moving contact 131 and different stationary contacts 141 can be accurately controlled. The mounting base 150 provides a stable and reliable reference for the reciprocating motion of the moving contact 131, ensuring that its moving end 139 can move along a preset trajectory, which is the basis for the precise closing and opening of the moving contact 131 and the stationary contact 141.

[0202] In at least one embodiment, the mounting base 150 includes a base body 151 and a connector 152 that are integrally injection molded together; the base body 151 is integrally injection molded with each stationary contact 141, and the fixed end 138 of the moving contact 131 is fixedly connected to the connector 152.

[0203] Since the mounting base 150 includes a base 151 and a connector 152 that are integrally injection molded together, and the fixed end 138 of the moving contact 131 is fixedly connected to the metal connector 152, deformation or damage to the base 151 that might occur if the moving contact 131 is directly connected to the plastic base 151 is avoided. This improves the reliability and lifespan of the relay, and also allows for the stable installation of the moving contact 131, which has greater rigidity and current-carrying cross-section, effectively improving the current-carrying capacity of the relay. Furthermore, the stationary contact 141 is already integrally injection molded with the mounting base 150, and the connector 152 is also integrally injection molded with the mounting base 150. In subsequent assembly processes, the moving contact 131 can be directly connected and fixed to the connector 152, thereby simplifying the overall assembly of the contact portion 100, saving time, and improving efficiency. Furthermore, since the connector 152 is injection molded onto the base 151 and the moving contact 131 is connected to the base 151 via the connector 152, the installation accuracy of the moving contact 131 is improved by the high-precision assembly of the connector 152, further enhancing the overall fit accuracy of the relay contact portion 100.

[0204] In at least one embodiment, the movable contact 131 is riveted, welded, screwed, or connected to the connector 152 by fasteners.

[0205] Since the moving contact 131 and the connector 152 are connected by riveting, welding, screwing or fasteners, these connection methods can ensure that the fixed end 138 of the moving contact 131 and the connector 152 form a long-term stable, high-strength mechanical fixation and low-resistance electrical connection, thus ensuring the reliability of the relay throughout its entire life cycle.

[0206] In at least one embodiment, the connector 152 defines an extension direction, along which one end of the connector 152 or a portion thereof protrudes from the base 151 to form a riveting end 156; the movable contact 131 is press-fitted to the riveting end 156 along the extension direction.

[0207] Since one end of the connector 152 extends out of the base 151 to form a connecting end and is used to make a press-fit connection with the moving contact 131, the connection operation area can be exposed outside the base 151, which facilitates the access and operation of the press-fit equipment, thereby simplifying the assembly process and improving production efficiency.

[0208] In at least one embodiment, the connector 152 defines an extension direction, along which one end of the connector 152 forms a terminal 161 for external wiring.

[0209] Since the connector 152 itself has a connection hole 154 for external connection, it is convenient to connect to the external wiring. At the same time, while the connector 152 is connected to the moving contact 131, it also undertakes the function of electrical conduction. It combines the mechanical fixing and electrical lead-out functions into one component, reduces the number of parts, simplifies the internal conductive path, and improves the integration of the product.

[0210] In at least one embodiment, the connector 152 has a connection hole 154 for external connection at one end along the extension direction; the connector 152 has a protrusion 155 that is perpendicular to the extension direction and protrudes outward, the protrusion 155 is at least partially embedded in the seat 151, and the protrusion 155 forms a riveting end 156 at one end along the extension direction and a holding end 157 at the other end along the extension direction; the holding end 157 is exposed outside the seat 151.

[0211] Because the connector 152 has a protrusion 155 perpendicular to its extension direction and embedded in the seat 151, and a top holding end 157 exposed on the other end of the seat 151, the connection between the connector 152 and the seat 151 is tighter, which can effectively prevent it from shifting or rotating relative to the seat 151; and when the moving contact 131 is riveted, the impact force applied can be directly transmitted to the external support fixture through the top holding end 157, avoiding damage or deformation of the plastic seat 151 due to direct force, thereby improving the assembly accuracy, and also preventing the connector 152 body from deforming due to pressure during riveting, thus ensuring the integrity of the shape of the connector 154 and its reliable external connection.

[0212] In at least one embodiment, the base 151 is provided with a top holding hole 158 along the extending direction for exposing the top holding end 157 in the base 151.

[0213] Because the base 151 is provided with a top holding hole 158 for exposing the top holding end 157, it ensures that the external support fixture can accurately abut against the top holding end 157 of the connector during the riveting process, while not excessively reducing the volume of the base 151 and the connection part between the base 151 and the connector 152, thus ensuring the connection strength between the base 151 and the connector 152.

[0214] In at least one embodiment, at least a portion of the surface of the portion of the stationary contact 141 in the first switch group 111 that is embedded in the mounting base 150 is provided with a pattern 162 to increase the contact area with the mounting base 150 and to prevent the stationary contact 141 from rotating relative to the mounting base 150.

[0215] Since at least a portion of the stationary contact 141 in the first switch group 111 has a pattern 162 on the surface of the part embedded in the mounting base 150, these patterns 162 form a microscopic mechanical interlock with the molten plastic during the injection molding process, which greatly increases the friction and contact area between the two, and can effectively prevent the stationary contact 141 from rotating or loosening when subjected to a large external force or stress caused by thermal expansion and contraction.

[0216] In at least one embodiment, at least a portion of the surface of the portion of the connector 152 embedded in the base 151 is provided with a pattern 162 to increase the contact area with the base 151 and to prevent the connector 152 from rotating relative to the mounting base 150.

[0217] Since the surface of the part of the connector 152 embedded in the base 151 is provided with a pattern 162, the principle of mechanical interlocking is also used to enhance the bonding strength between the metal connector 152 and the plastic base 151, ensuring the long-term stability of the position of the connector 152, which serves as the mounting reference for the moving contact 131, thereby ensuring the accuracy of the movement of the moving contact 131.

[0218] This utility model also provides a relay, which includes a contact portion 100 as described in any of the preceding claims.

[0219] Since the relay uses any of the aforementioned contact parts 100, it can have better matching accuracy between the moving contact 131 and the stationary contact 141 in the switch, thereby reducing electrical losses during relay use and facilitating long-term normal use of the relay.

[0220] In at least one embodiment, it further includes: a pushing portion 200 connected to the moving contact 131 of each switch in the contact portion 100 to push each moving contact 131 to close or open with the corresponding stationary contact 141; and a driving portion 300, the output of which is connected to the pushing portion 200 for driving the pushing portion 200.

[0221] Since the relay also includes a housing, and all the terminals 161 of the moving contacts 131 and stationary contacts 141 are located on the same surface of the housing, this uniform and orderly layout of the terminals 161 not only facilitates the layout of the moving contacts 131 and stationary contacts 141 inside the relay, but also facilitates the electrical connection of the relay with external circuits, thus broadening the application range of the relay.

[0222] In at least one embodiment, a housing is also included that is fixed to the mounting base 150; the contact portion 100, the pushing portion 200 and the driving portion 300 are mounted on the housing.

[0223] Since the relay also includes a housing, and all the terminals 161 of the moving contacts 131 and stationary contacts 141 are located on the same surface of the housing, this uniform and orderly layout of the terminals 161 not only facilitates the layout of the moving contacts 131 and stationary contacts 141 inside the relay, but also facilitates the electrical connection of the relay with external circuits, thus broadening the application range of the relay.

[0224] 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 contact portion for use in a relay, characterized in that, include: Mounting base; At least two switches, each switch comprising a moving contact and a stationary contact; Among them, at least two switches cooperate to form the first switch group; In the first switch group, each switch shares a moving contact, and the shared moving contact forms a common moving contact. The stationary contacts of each switch are located on both sides of the common moving contact along the direction of movement of the common moving contact and are injection molded into the mounting base.

2. The contact portion as described in claim 1, characterized in that, In the first switch group, the common moving contact is adapted to be closed or both open with the stationary contacts on both sides of its operating direction.

3. A contact portion as described in claim 1, characterized in that, At least one switch forms a second switch group; at least one switch in the first switch group and at least one switch in the second switch group share a stationary contact and the shared stationary contact forms a common stationary contact.

4. A contact portion as described in claim 3, characterized in that, The common stationary contact has a stationary contact portion corresponding to the two switches to which it belongs. The stationary contact portion is provided with a stationary contact for cooperating with the moving contact on the moving contact portion. The closing directions of the switches corresponding to the two stationary contact portions are opposite.

5. A contact portion as described in claim 3, characterized in that, All moving contacts are linked together so that the contact portion has at least three contact states: the first contact state is when the common moving contact and the common stationary contact in the first switch group are closed and the moving contact and the common stationary contact in the second switch group are open; the second contact state is when the common moving contact in the first switch group is closed and the stationary contact located on the other side of the common moving contact is closed and the moving contact and the common stationary contact in the second switch group are closed; and the third contact state is when all switches in the first switch group and the second switch group are open.

6. A contact portion as described in claim 3, characterized in that, At least a portion of the common static contact element is integrally molded with the mounting base by injection molding.

7. A contact portion as described in claim 6, characterized in that, The common stationary contact is an integral structure, which includes a first contact portion that cooperates with the switch of the first switch group, a second contact portion that cooperates with the switch of the second switch group, and a connecting portion that connects the first and second contact portions; the common stationary contact is injection molded integrally with the mounting base at least by means of the connecting portion; the first contact portion and the second contact portion are provided with stationary contacts for cooperating with the moving contacts on the moving contact.

8. A contact portion as described in claim 7, characterized in that, The first switch group and the second switch group are arranged in a first direction; the first contact portion, the connecting portion, and the second contact portion of the common stationary contact are arranged sequentially along the first direction, the connecting portion extends in a second direction, and the first contact portion and the second contact portion are staggered in the second direction; the second direction is perpendicular to the first direction.

9. A contact portion as described in claim 8, characterized in that, The first contact portion and the second contact portion are staggered in the third direction, and the two have the stationary contact point on the side facing each other; the connecting portion extends in the third direction; the third direction is perpendicular to both the first direction and the second direction.

10. A contact portion as described in claim 8, characterized in that, The first contact portion, the second contact portion, and the connecting portion are all sheet-like structures; the first contact portion and the second contact portion are perpendicular to the third direction; the connecting portion is perpendicular to the first direction.

11. A contact portion as described in claim 9 or 10, characterized in that, The mounting base is provided with a partition wall; the partition wall is located between the first switch group and the second switch group along a first direction; the connecting part of the common static contact is at least partially injection molded into the partition wall.

12. A contact portion as described in claim 11, characterized in that, In the first switch group, the two stationary contacts corresponding to the two switches are arranged along a third direction on both sides of the moving contact. One of the stationary contacts is the common stationary contact, and the first contact portion of the common stationary contact extends from the partition wall and corresponds to the common moving contact. The other stationary contact is integrally injection molded with the mounting base. In the second switch group, the stationary contact corresponding to one switch is the common stationary contact, and the second contact portion of the common stationary contact extends from the partition wall and corresponds to the moving contact of the switch. It is also integrally injection molded with the mounting base.

13. A contact portion as described in claim 3, characterized in that, The terminals of the stationary contacts in the first and second switch groups for external wiring are led out to the mounting base in the same direction and exposed on the outer surface of the relay.

14. A contact portion as described in claim 13, characterized in that, In the first switch group, at least one of the stationary contacts, excluding the common stationary contact, is integrally injection molded with the mounting base and is columnar. One end of the stationary contact extends out of the mounting base and forms the terminal, while the other end extends out of the mounting base and is provided with a stationary contact for cooperating with the moving contact on the common moving contact.

15. A contact portion as described in claim 13, characterized in that, The second switch assembly also includes a stationary contact integrally injection molded with the mounting base. One end of the stationary contact is connected to the second contact portion of the common stationary contact, and the other end protrudes from the mounting base to form the wiring terminal.

16. A contact portion as described in claim 1, characterized in that, Each of the moving contacts includes a fixed end that is fixed relative to the mounting base and a movable end that is movable relative to the mounting base; the fixed end is fixedly connected to the mounting base; the movable end is adapted to move relative to the fixed end of the moving contact to close or open with the corresponding stationary contact.

17. A contact portion as described in claim 16, characterized in that, The mounting base includes a base body and a connector that are injection molded integrally; the base body and each of the static contacts are injection molded integrally, and the fixed end of the moving contact is fixedly connected to the connector.

18. A contact portion as described in claim 17, characterized in that, The moving contact is riveted, welded, screwed, or connected to the connecting member by fasteners.

19. A contact portion as described in claim 17, characterized in that, The connector defines an extension direction, along which one end of the connector or a portion thereof protrudes from the base to form a riveting end; the movable contact is press-fitted to the riveting end along the extension direction.

20. A contact portion as claimed in claim 17, characterized in that, The connector defines an extending direction, along which one end of the connector forms a terminal for external wiring.

21. A contact portion as described in claim 19, characterized in that, The connector has a connection hole for external connection at one end along the extension direction; the connector has a protrusion that is perpendicular to the extension direction and protrudes outward, the protrusion is at least partially embedded in the seat, and the protrusion forms the riveting end at one end in the extension direction and the top holding end at the other end in the extension direction; the top holding end protrudes from the seat.

22. A contact portion as described in claim 21, characterized in that, The base body is provided with a top holding hole along the extending direction for exposing the top holding end in the base body.

23. A contact portion as described in claim 1, characterized in that, At least a portion of the surface of the portion of the stationary contact in the first switch assembly that is embedded in the mounting base is patterned to increase the contact area with the mounting base and to prevent the stationary contact from rotating relative to the mounting base.

24. A contact portion as described in claim 17, characterized in that, At least a portion of the surface of the portion of the connector embedded in the base is patterned to increase the contact area with the base and to prevent the connector from rotating relative to the mounting base.

25. A relay, characterized in that, include: The contact portion as described in any one of claims 1 to 24.

26. A relay as described in claim 25, characterized in that it further... include: The actuating part is connected to the moving contact of each switch in the contact part to actuate each moving contact to close or open with the corresponding stationary contact; and The driving part has its output end connected to the pushing part for driving the pushing part.

27. A relay as described in claim 26, characterized in that, It also includes a housing fixedly connected to the mounting base; the contact portion, the pushing portion and the driving portion are mounted on the housing.

Images