Contact part and relay

Abstract

The invention discloses a contact part, which is used for a relay, and comprises a mounting seat; each switch comprises a movable contact piece and a static contact piece; wherein at least two switches are matched to form a first switch group; the switches in the first switch group share the movable contact piece, the shared movable contact piece forms a public movable contact piece, and the static contact pieces of the switches are located on the two sides of the public movable contact piece in the action direction of the public movable contact piece respectively and integrated with the mounting base in an injection molding mode. By adopting the technical scheme, the problem that the service life of the contact and the stability of the relay shell are influenced due to inconsistent contact resistance of the movable contact piece and different static contact pieces of the contact part can be solved.

Description

Technical Field

[0001] The present invention relates to a relay field, and in particular to a contact part and a relay. Background Art

[0002] Relays in the prior art are generally used to receive excitation or signals from an external circuit to control the on / off state of the external circuit or one of its branches. Relays generally include a driving portion, a propulsion portion, and a contact portion. The driving portion receives excitation or signals from the external circuit to drive the propulsion portion. The driving portion generally includes a coil assembly and an armature assembly. The coil assembly drives the armature assembly between two positions based on different signals or excitations. The contact portion generally includes a moving contact and a stationary contact. The propulsion portion is generally driven by the armature assembly and connects to the moving contact, pushing the moving contact and the stationary contact into contact.

[0003] The contact portion of a relay generally includes a housing, on which the moving and stationary contacts are mounted, and from which connection terminals extend for connection to an external wiring structure. However, in conventional relays, when a moving contact needs to cooperate with multiple stationary contacts to achieve on / off control of a complex circuit, differences in overtravel between the moving contact and different stationary contacts are likely to occur, as is the contact pressure between the moving contact and different stationary contacts. This can lead to inconsistencies in the contact resistance between the moving contact and different stationary contacts, which in turn can cause local temperature rises exceeding design requirements, severely impacting the life of the contacts. Furthermore, uneven force and high temperatures can cause deformation of the relay housing (plastic components). Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and provide a contact part and a relay, which can improve the problem of affecting the contact life and stability of the relay housing due to inconsistent contact resistance between the moving contact and different static contacts of the contact part.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A contact portion for a relay, comprising: a mounting base; at least two switches, each comprising a moving contact and a static contact; wherein the at least two switches cooperate to form a first switch group; the switches in the first switch group share a moving contact, and the shared moving contacts form a common moving contact; the static 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 as one piece with the mounting base.

[0007] The applicant's research found that the reason why the existing relays have the problems described in the background technology is that, in the existing technology, each moving contact is separately installed on the shell, and the side wall of the shell and the interior of the shell are respectively radially positioned for each static contact through injection-molded limit grooves. However, problems such as draft angle and curing deformation exist in the injection molding process, which make it difficult to accurately control the positioning effect and limiting effect of the positioning structure (limit groove) of each static contact. The cumulative error of each positioning structure leads to poor precision in the matching between the moving contact and the static contacts, which is prone to poor matching accuracy, resulting in inaccurate alignment of the moving contact and the static contacts, and difficulty in accurately controlling the matching accuracy between the moving contact and different static contacts. In addition, the moving contact is prone to mistakenly closing due to the static contact that is closer to the other side during the process of disconnecting from the static contact on one side. In addition, in the existing technology, the positioning structure is also prone to deformation after long-term use, resulting in failure of the positioning and limiting effects. To this end, in this technical solution, each static contact in the first switch group is integrally molded with the mounting seat by injection molding and cooperates with both sides of a common moving contact, thereby improving the problems of assembly accuracy and structural stability of the contact part of the traditional relay. Among them, by integrally molding each static contact with the mounting seat by injection molding, the position of each static contact can be defined by the high-precision injection mold to provide protection. During the injection molding process, the placement position of each pre-molded static contact can be accurately set, and the position of each static contact in the mounting seat can be fixed after the plastic material cools and solidifies. This eliminates the cumulative error caused by part tolerances, tooling positioning errors, and assembly operation errors when fixing the static contacts one by one using the traditional assembly method. It ensures the precise control of the matching accuracy between the moving contact and different static contacts, so that the moving contact can form a high-precision match with the static contact in both the open position and the two closed positions, thereby providing a structural guarantee for the relay to obtain reliable pull-in, release characteristics and electrical performance, which is conducive to reducing the electrical loss of the relay. Furthermore, the integral structure formed by injection molding means that each static contact is no longer fixed in isolation at a certain point on the mounting base, but is instead embedded in a large area of plastic material to form a whole. When the relay is operating, the impact force generated by the closing of the moving contact and the static contact, as well as the force generated by vibration or external impact during long-term operation, will be effectively dispersed throughout the mounting base, rather than concentrated on a single fragile connection point. This effectively prevents the static contact from shifting or loosening during long-term use, which not only ensures the stable use of the relay, but also further guarantees the matching accuracy of the static contact with the moving contact during long-term use. In addition, since the static contact has been pre-assembled on the mounting base, only the moving contact needs to be assembled during subsequent assembly, which simplifies the assembly process and time consumption and improves assembly efficiency.

[0008] In at least one embodiment, in the first switch group, the common moving contact is suitable for closing or opening with the static contacts on both sides of its movement direction respectively.

[0009] Since the first switch group adopts a common moving contact, three independent circuit states can be realized through the common moving contact, namely forming a closed path with one of the static contacts located on both sides of its action path, or maintaining a predetermined electrical gap with the static contacts on both sides and being in a disconnected state. In addition to the traditional state of switching the two static contacts to be closed, the fully disconnected state enables the relay to meet the requirements of safety isolation during circuit maintenance, independent and precise control of each battery cell during the pre-charging of new energy vehicle batteries, etc., which significantly broadens the application range of the relay. In addition, since the static contact and the mounting seat are injection molded as one, the static contact has higher installation accuracy and stability, which can ensure that the common moving contact maintains a stable contact gap with the static contacts on both sides when it is disconnected from the static contacts on both sides, can better control the accuracy of the contact gap, and ensure that the common moving contact is reliably disconnected from the static contacts on both sides.

[0010] In at least one embodiment, 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 static contact, and the shared static contact forms a common static 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 static contact, a single static contact serves two independent switch circuits simultaneously. This reduces the total number of required parts, reduces the installation process and time consumption, and improves space utilization, making the internal structure of the relay more compact. More complex circuit functions, such as two-way parallel or series connection, can be implemented without significantly increasing the overall volume of the relay. Furthermore, by integrally injection-molding the static contact and the mounting base, precise positioning of the two switches is achieved, further improving the overall matching accuracy of the relay contact portion.

[0012] In at least one embodiment, the common static contact has static contact parts corresponding to the two switches to which it belongs, and the static contact parts are provided with static contacts for cooperating with the moving contacts on the moving contact, and the closing directions of the switches corresponding to the two static contact parts are opposite.

[0013] Since the common static contact is provided with static contact parts with opposite closing directions corresponding to 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 during movement, which is conducive to further miniaturization of the relay.

[0014] In at least one embodiment, all the moving contacts are linked to each other so that the contact part has at least three contact states, the common moving contact and the common static contact in the first switch group are closed and the moving contact and the common static contact in the second switch group are disconnected as a first contact state, the common moving contact in the first switch group is closed with the static contact located on the other side of the common moving contact relative to the common static contact and the moving contact and the common static contact in the second switch group are closed as a second contact state, and each switch in the first switch group and the second switch group are disconnected as a third contact state.

[0015] Since the closed state of the common moving contact and different static contacts in the first switch group in the second switch group respectively corresponds to the closed state and the open state of each switch in the second switch group, that is, when the common moving contact is closed with the static contact on one side, it can correspond to the closing of each switch in the second switch group, and when the common moving contact is closed with the static contact on the other side, it corresponds to the open state of each switch in the second switch group. Through the correspondence between the switch states, selective switching of series circuits and parallel circuits can be realized inside the relay, providing the necessary hardware foundation for realizing 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 static contact is integrally formed with the mounting seat by injection molding.

[0017] Since at least a portion of the common static contact is integrally formed with the mounting base by injection molding, this means that the common static contact may not be completely embedded in the mounting base, and the contact portion of the common static contact can be largely exposed from the mounting base. At the same time, the overall volume of the mounting base can also be reduced, which is conducive to the miniaturization of the relay and improves the utilization rate of the internal space of the relay.

[0018] In at least one embodiment, the common static contact is an integrated 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 connecting the first and second contact portions; the common static contact is at least injection-molded as one piece with the connecting portion and the mounting seat; the first contact portion and the second contact portion are provided with static contacts for cooperating with the moving contacts on the moving contact.

[0019] Designing the common static contact as an integrated structure comprising a first contact portion, a second contact portion, and a connecting portion reduces the number of parts, optimizes the structure, and improves the relative positioning accuracy between the first and second contact portions. By integrally molding at least a portion of the connecting portion with the mounting base, a stable mounting base is provided for the entire common static contact, improving the positioning accuracy of the common static contact 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 static contact are arranged in sequence 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] Since the first switch group and the second switch group are staggered in the first direction, and the various parts of the common static contact are staggered in the first and second directions, and the connecting part extends in the second direction, an efficient layout of the common static contact is achieved in the compact internal space of the relay, which is conducive to the miniaturization of the overall relay.

[0022] In at least one embodiment, the first contact portion and the second contact portion are staggered in the third direction, and the static contact is provided on the side facing each other; the connecting portion extends in the third direction; and the third direction is perpendicular to both the first direction and the second direction.

[0023] Since the space in the third direction is utilized to arrange the first contact portion, the connecting portion, and the second contact portion, the conventional planar layout is converted into a three-dimensional layout, thereby realizing effective utilization of the internal space of the relay in the third direction, which is conducive to further realizing complex functions without increasing the floor space and contributing to the miniaturization of 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] Because the first, second, and connecting portions are designed as sheet-like structures, the common static contact is a single, thin member. This shape restriction significantly reduces the space occupied by the common static contact while ensuring a high current-carrying area. Furthermore, the extension directions of the first, second, and connecting portions of the common static contact are defined. The extension of the connecting portion perpendicular to the first direction fully utilizes space in the third direction. Furthermore, the extension of the first and second contact portions perpendicular to the third direction ensures good contact and coordination 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 the first direction; and the connecting portion of the common static contact is at least partially injection-molded integrally with the partition wall.

[0027] The partition wall between the first and second switch groups on the mounting base increases the creepage distance between the two switch groups, effectively preventing the risk of short circuits caused by arcing or electrical breakdown. It also allows the first and second switch groups to be placed as close together as possible, achieving a compact layout and saving space. Furthermore, the connection portion of the common static contact is integrally injection-molded with the partition wall, providing sturdy mechanical support and precise positioning for the common static contact. This utilizes the existing partition wall, ensuring a secure installation of the common static contact while further occupying space within the relay, further improving the compactness of the relay's overall structure.

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

[0029] Since the first contact portion of the common static contact extends from the partition wall and the second contact portion is injection-molded as one piece with the mounting seat, most of the common static contact is fixed on the mounting seat, thereby significantly improving the installation stability and anti-interference ability of the common static contact, and the common static contact is less likely to be displaced or shaken due to external force; 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 efficient use of the internal space of the relay and ensures that the mounting seat can be reliably formed.

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

[0031] Since the terminal blocks of each static contact in the first switch group and the second switch group for external connection are all led out in the same direction, the need for multi-directional bending of each static contact is avoided, copper loss is reduced, and it is beneficial for each static contact to lead out the terminal block with a larger wide surface. In the scheme with terminal blocks, the connection strength and connection area with the terminal blocks can be increased, especially the welding area during welding, thereby facilitating the electrical connection between the relay and the external circuit, reducing the difficulty of designing and manufacturing the external circuit, and thus expanding the use scenarios of the relay.

[0032] In at least one embodiment, at least one static contact in the first switch group, except the common static contact, which is injection-molded as one piece with the mounting base is columnar, and one end of the static contact along its extension direction is exposed from the mounting base and forms the wiring terminal, and the other end is exposed from the mounting base and is provided with a static contact for cooperating with the moving contact on the common moving contact.

[0033] The cylindrical design of the static contact, with one end exposed as a terminal, integrates contact and wiring functions. This reduces the number of parts and intermediate connections, simplifies the structure, and reduces contact resistance and the risk of failure caused by additional welding or connections. The static contact's cylindrical structure also offers high mechanical strength, ensuring stability during injection molding and use, while also providing sufficient resistance to impact from the dynamic contact.

[0034] In at least one embodiment, the second switch group further includes a static contact that is injection-molded as one piece with the mounting base, one end of the static contact is connected to the second contact portion of the common static contact, and the other end is exposed from the mounting base and forms the wiring terminal.

[0035] Since a static contact is provided, the common static contact does not need to be provided with a structure for leading out the wiring terminal. Therefore, the molding process of the common static contact is simpler, and it is also easier to be injection molded into one piece with the mounting base. In addition, by leading out the wiring terminal through an independent static 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 dynamic 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 suitable for moving relative to the fixed end of the dynamic contact to close or disconnect with the corresponding static contact.

[0037] Because the fixed end of the moving contact is fixedly connected to the mounting base, the mounting base can accurately locate the fixed end of the moving contact, further ensuring that the gap between the moving contact and the 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 movable end can move along the 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 seat includes a seat body and a connecting piece that are integrally injection-molded; the seat body and each of the static contacts are integrally injection-molded, and the fixed end of the dynamic contact is fixedly connected to the connecting piece.

[0039] Since the mounting base includes a base body and a connector that are integrally injection molded, and the fixed end of the moving contact is fixedly connected to the metal connector, deformation or damage to the base body that may be caused by directly connecting the moving contact to the plastic base body is avoided, thereby improving the reliability and life of the relay. At the same time, the moving contact with greater rigidity and current-carrying cross-section can be firmly installed, effectively improving the current-carrying capacity of the relay. In addition, the static contact has been injection molded into a whole with the mounting base, and the connector has also been injection molded into a whole with the mounting base. In the subsequent assembly process, the moving contact can be directly connected and fixed to the connector, thereby simplifying the overall assembly of the contact part, saving time and improving efficiency. In addition, since the connector is injection molded on the base body and the moving contact is connected to the base body through the connector, the installation accuracy of the moving contact will be improved due to the high-precision assembly of the connector, further improving the overall matching accuracy of the contact part of the relay.

[0040] In at least one embodiment, the movable contact and the connecting member are riveted, welded, screwed or connected via fasteners.

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

[0042] In at least one embodiment, the connecting member defines an extension direction, along which one end of the connecting member or part of the connecting member is exposed from the base to form a riveted end; the moving contact is riveted to the riveted end along the extension direction.

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

[0044] In at least one embodiment, the connecting member defines an extension direction, and along the extension direction, one end of the connecting member forms a wiring terminal for external wiring.

[0045] Since the connector itself is provided with a connection hole for external connection, it can facilitate external wiring. At the same time, when the connector is connected to the moving contact, it also assumes the function of electrical conduction, combining the mechanical fixation and electrical lead-out functions in one component, reducing the number of parts, simplifying the internal conductive path, and improving the integration of the product.

[0046] In at least one embodiment, the connecting member is provided with a connecting hole for external connection at one end along the extension direction; the connecting member is provided with a protrusion perpendicular to the extension direction and protruding outward, the protrusion is at least partially embedded in the base body, and the protrusion forms the riveted end at one end of the extension direction and forms a supporting end at the other end of the extension direction; the supporting end is exposed from the base body.

[0047] Since the connecting piece is provided with a protrusion perpendicular to its extension direction and embedded in the base body, and a top holding end exposed from the base body is formed at the other end, the connection between the connecting piece and the base body is tighter, which can effectively prevent it from being displaced or rotated relative to the base body; and when the dynamic contact is riveted, the impact force applied can be directly transmitted to the external support fixture through the top holding end, avoiding damage or deformation of the plastic base body due to direct force, thereby improving the accuracy of assembly, and can also avoid deformation of the shape of the connecting hole due to pressure deformation of the connecting piece body during riveting, thereby ensuring that the shape of the connecting hole is complete and can be reliably connected to the outside.

[0048] In at least one embodiment, the base body is provided with a supporting hole along the extending direction for exposing the supporting end from the base body.

[0049] Since the seat body is provided with a holding hole for exposing the holding end, it ensures that during the riveting process, the external support fixture can accurately abut against the holding end of the connector without excessively reducing the volume of the seat body and the connection part between the seat body and the connector, thereby ensuring the connection strength between the seat body and the connector.

[0050] In at least one embodiment, at least a portion of the surface of the portion where at least part of the static contacts in the first switch assembly are embedded in the mounting seat is provided with a pattern to increase the contact area with the mounting seat and prevent the static contacts from rotating relative to the mounting seat.

[0051] Since at least part of the static contacts in the first switch group are embedded in the surface of the mounting seat and are provided with patterns, these patterns form a microscopic mechanical interlock with the molten plastic during the injection molding process, greatly increasing the friction and bonding area between the two, and can effectively prevent the static 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 where at least part of the connecting member is embedded in the seat body is provided with a pattern to increase the contact area with the seat body and prevent the connecting member from rotating relative to the mounting seat.

[0053] Since the surface of the part where the connector is embedded in the base is provided with patterns, the principle of mechanical interlocking is also utilized to enhance the bonding strength between the metal connector and the plastic base, thereby ensuring the long-term stability of the connector's own position as the installation reference for the moving contact, thereby ensuring the accuracy of the moving contact's movement.

[0054] The present invention also provides a relay, comprising the contact portion as described in any one of the above items.

[0055] Since the relay adopts any of the contact parts described above, it can have better matching accuracy between the moving contact and the static contact in the switch, thereby reducing the electrical loss when the relay is used, which is beneficial to the long-term normal use of the relay.

[0056] In at least one embodiment, it also includes: a pushing part, which is connected to the moving contact of each switch in the contact part to push each moving contact to close or disconnect with the corresponding static contact; and a driving part, whose output end is connected to the pushing part to drive the pushing part.

[0057] Since the relay also includes a housing, and the wiring terminals leading out of all the moving contacts and static contacts are located on the same surface of the housing, this unified and regular layout of the wiring terminals not only facilitates the layout of the moving contacts and static contacts inside the relay, but also facilitates the electrical connection of the relay with external circuits, thereby broadening the scope of use of the relay.

[0058] In at least one embodiment, the invention further comprises a shell fixedly connected to the mounting base; the contact portion, the pushing portion and the driving portion are mounted on the shell.

[0059] Since the relay also includes a housing, and the wiring terminals leading out of all the moving contacts and static contacts are located on the same surface of the housing, this unified and regular layout of the wiring terminals not only facilitates the layout of the moving contacts and static contacts inside the relay, but also facilitates the electrical connection of the relay with external circuits, thereby broadening the scope of use of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0061] Figure 1 Schematic diagram of the three-dimensional structure of the relay in Example 1;

[0062] Figure 2 Schematic diagram of the internal structure of the relay in Example 1;

[0063] Figure 3 2 is a schematic diagram of the three-dimensional structure of the relay in Example 1 from another perspective;

[0064] Figure 4 A schematic diagram of the internal structure of the relay in Example 1 from another perspective;

[0065] Figure 5 Schematic diagram of the X-axis direction of the relay in Example 1;

[0066] Figure 6 Schematic diagram of the Z-axis direction of the relay in Example 1;

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

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

[0069] Figure 9 Schematic diagram of the first switch group and the second switch group of the contact part in Example 1;

[0070] Figure 10 Schematic diagram of the common static contact and the static contact of the contact part in the first embodiment;

[0071] Figure 11 This is a schematic diagram of the relay in the first embodiment excluding the driving part in the Z-axis direction;

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

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

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

[0075] Figure 15 Schematic diagram of the structure of the pusher in Example 1.

[0076] Description of main reference numerals:

[0077] Contact portion 100; first switch group 111; second switch group 112; first switch 121; second switch 122; third switch 123; movable contact 131; movable contact point 132; pushed portion 133; fixed portion 134; actuating portion 135; flexible connecting portion 136; common movable contact 137; fixed end 138; movable end 139; static contact 141; static contact point 142; common static contact 143; static contact portion 144; first contact portion 145; second contact portion 146; connecting portion 147; static contact 148; mounting seat 150; seat body 151; connecting member 152; partition wall 153; connecting hole 154; protruding portion 155; riveted end 156; holding end 157; holding hole 158; terminal 161; pattern 162;

[0078] Pushing portion 200; rotating member 210; main shaft 211; sliding pin 212; pushing unit 220; connecting body 221; pushing body 222; first elastic member 223; first limiting portion 224; second limiting portion 225; pushing member 226; sliding groove 227; side wall 228; overlapping portion 229; metal swing arm 230; shaft connecting portion 231; extending portion 232; pushing connecting portion 233; rotating shaft 240; swing block 250;

[0079] Driving part 300. DETAILED DESCRIPTION

[0080] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0081] In the claims, description and drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" is for the purpose of distinguishing different objects rather than for describing a specific order.

[0082] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise expressly defined, directional words such as the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific scope of protection of the present invention.

[0083] In the claims, description and above-mentioned drawings of the present invention, unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two parties, that is, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0084] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0085] Definition of terms

[0086] In the claims and description of the present invention, unless otherwise defined, the use of terms such as "first", "second" or "third" is for distinguishing different objects rather than for describing a specific order.

[0087] In the claims and description of the present invention, unless otherwise specified, the directions or positional relationships indicated by the terms "X-axis direction", "Y-axis direction", "Z-axis direction", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc. are based on the directions and positional relationships shown in the accompanying drawings and are only for the convenience of simplifying the description, and do not imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction.

[0088] In the claims and description of the present invention, unless otherwise specified, the terms "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method without any displacement relationship or relative rotation relationship between the two parties, that is, including non-detachable fixed connection, detachable fixed connection, integrated connection, and fixed connection through other devices or elements.

[0089] In the claims and description of the present invention, unless otherwise defined, the terms "include", "have" and their variations are intended to mean "including but not limited to".

[0090] In the claims and specification of the present invention, unless otherwise specified, the term "switch" shall be interpreted as meaning "a switch including a moving contact and a stationary contact," which should be understood as meaning that each switch must have a moving contact and a stationary contact for closing or opening the switch. When two or more switches share a moving contact (i.e., a common moving contact), the shared moving contact can be closed or opened with the stationary contacts of each of these switches.

[0091] In the claims and specification of the present invention, unless otherwise specified, the term "movable contact" shall be interpreted as referring to a component that moves in whole or in part to close or open with the stationary contact when pushed by a pushed portion. In this application, when the term "movable contact" is used to describe its position, direction, or relative relationship with a stopper, etc., it should be understood to refer specifically to its movable main body, especially its actuating end that contacts the stationary contact.

[0092] In the claims and specification of the present invention, unless otherwise specified, the terms "moving direction and closing direction of the moving contact" should be interpreted as follows: "The 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 the static contacts on both sides. The "closing direction of the moving contact" should be understood as unidirectional, referring to the direction of movement of the moving contact toward and ultimately contacting a specific static 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 a swinging motion.

[0093] In the claims and description of the present invention, unless otherwise defined, the term "flexible moving contact" should be interpreted as referring to a moving contact that realizes the swing of the action part by bending and deforming its own flexible connection part.

[0094] In the claims and specification of the present invention, unless otherwise specified, the terms "fixed portion," "acting portion," and "flexible connecting portion" shall be interpreted as referring to the three parts that constitute the flexible movable contact. The "fixed portion" is the portion that remains fixed relative to the static contact; the "acting portion" is the portion that is adapted to swing relative to the fixed portion to close or open with the static contact; and the "flexible connecting portion" is the flexible portion that connects the fixed portion and the acting portion and provides bending function.

[0095] In the claims and description of the present invention, unless otherwise defined, the term "common moving contact" should be interpreted as: in this application, it specifically refers to a moving contact shared by at least two switches (forming a first switch group).

[0096] In the claims and description of the present invention, unless otherwise defined, the term "first switch group" shall be interpreted as referring to a set of at least two switches, wherein these switches share a moving contact (i.e., a common moving contact), and the static contacts of each switch are respectively located on both sides of the action direction of the common moving contact to realize the function of a switching switch.

[0097] In the claims and specification of this invention, unless otherwise specified, the term "stationary contact" shall be interpreted as referring to a component that remains fixed in position relative to the movement of the moving contact. In this application, when "stationary contact" is used to describe its spatial distribution or relative position to the moving contact, it should be understood to specifically refer to the portion of the contact that comes into contact with the moving contact.

[0098] In the claims and description of the present invention, unless otherwise defined, the term "common static contact" shall be interpreted as referring to a static 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 static contact point for two independent switch circuits at the same time through an integrated structure.

[0099] In the claims and description of the present invention, unless otherwise defined, the term "static contact portion" shall be interpreted as referring to a specific functional area on a common static contact that is separately provided to cooperate with the dynamic contacts in each switch to which it belongs and is used to directly contact the dynamic contacts.

[0100] In the claims and description of the present invention, unless otherwise defined, the term "first contact portion" should be interpreted as referring to a static contact portion on the common static contact that cooperates with the movable contact of the first switch group.

[0101] In the claims and description of the present invention, unless otherwise defined, the term "second contact portion" should be interpreted as referring to a static contact portion on the common static contact that cooperates with the movable contact of the second switch group.

[0102] In the claims and description of the present invention, unless otherwise specified, the term "connecting portion" shall be interpreted as referring to a structural portion of the common static contact that connects the first contact portion and the second contact portion to form a single unit. This portion is at least partially injection-molded integrally with the mounting base to securely secure the entire common static contact.

[0103] In the claims and description of this invention, unless otherwise specified, the term "sheet structure" should be interpreted as referring to a component having one dimension (thickness) that is significantly smaller than the other two dimensions. In this application, it defines the various parts of the common static contact, intended to ensure sufficient conductive cross-sectional area while minimizing its space occupation.

[0104] In the claims and description of the present invention, unless otherwise defined, the term "connection terminal" shall be interpreted as: a structural part preset on a static contact, a connector or a moving contact and electrically connected to a connection terminal, and a connection terminal is a component used to lead out to the outside of the relay and electrically connect to an external circuit.

[0105] In the claims and description of the present invention, unless otherwise defined, the term "stationary contact" shall be interpreted as referring to an independent conductive component, one end of which is connected to the second contact portion of the common stationary contact, and the other end forms a wiring terminal, the function of which is to provide a path for external electrical connection for the common stationary contact.

[0106] In the claims and description of the present invention, unless otherwise defined, the term "injection molding as one piece" shall be interpreted as referring to a manufacturing process in which one or more preforms (such as static contacts, connectors) are placed in a mold, molten plastic is injected into the mold, and after cooling and solidification, the preforms are firmly combined with the plastic matrix into a single, integral component.

[0107] In the claims and description of the present invention, unless otherwise defined, the term "mounting seat" should be interpreted as: a basic structural component in the contact part, whose main function is to provide a precise and stable mounting reference for these components by being injection molded into one with various static contacts, connecting parts, etc.

[0108] In the claims and description of the present invention, unless otherwise defined, the term "partition wall" shall be interpreted as referring to a wall-like protruding structure provided on the mounting base and located between the first switch group and the second switch group, which is used to increase the creepage distance between the two switch groups and can serve as a mounting support for the common static contact.

[0109] In the claims and description of the present invention, unless otherwise defined, the term "seat body" should be interpreted as referring to the main component of the mounting seat, which is usually made of plastic and is formed by injection molding together with the static contact parts.

[0110] In the claims and description of the present invention, unless otherwise defined, the term "connector" shall be interpreted as referring to a metal component that is pre-formed and injection-molded as one piece with the base, the main function of which is to provide a high-strength, high-reliability fixed connection point for the moving contact.

[0111] In the claims and description of the present invention, unless otherwise defined, the term "riveted end" shall be interpreted as referring to a structural portion of the connector specifically designed for riveting connection with the moving contact, which portion is usually exposed from the base to facilitate assembly operations.

[0112] In the claims and description of the present invention, unless otherwise defined, the term "connection hole" should be interpreted as: a hole opened on a connector for connecting to an external wiring structure (such as a bolt, terminal) to realize an electrical path.

[0113] In the claims and description of this invention, unless otherwise specified, the term "holding end" shall be interpreted as referring to the end of a connector that receives the holding force of an external support jig during the riveting operation. Its function is to transmit the riveting force directly to the jig, thereby protecting the base from deformation or damage caused by impact during assembly.

[0114] In the claims and description of the present invention, unless otherwise defined, the term "holding hole" shall be interpreted as referring to a hole opened on the base body for allowing the holding end of the connector to be exposed therefrom so as to contact an external support fixture.

[0115] In the claims and description of the present invention, unless otherwise defined, the term "pushing unit" should be interpreted as referring to a collection of components that directly or indirectly push the moving contact member to move. In this application, its core components include the pushing member and the first elastic member.

[0116] In the claims and description of the present invention, unless otherwise specified, the term "pushing member" should be interpreted as: referring to a core rigid component in the pushing unit, which carries functional structures such as the first limiting part and the second limiting part, and is used to transmit the driving force from the driving part, and provide support for the first elastic member.

[0117] In the claims and description of the present invention, unless otherwise specified, the term "first elastic member" should be interpreted as referring to an elastic element (such as a spring) provided in the pushing 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 static contact are closed.

[0118] In the claims and specification of the present invention, unless otherwise specified, the term "first limiting portion" shall be interpreted as referring to a structure provided on the pusher member for limiting, through direct physical contact, the separation of the movable contact from the stationary contact due to the electrodynamic repulsive force of a fault current when the movable contact is closed. The first limiting portion is located to the side of the movable contact (e.g., above the movable contact) in the direction of disconnection (directly away from the corresponding stationary contact) when the movable contact is closed. Only in this manner can the first limiting portion contact or approach the movable contact in the closing direction of the movable contact when the movable contact is closed, thereby limiting the opening distance of the movable contact.

[0119] In the claims and description of the present invention, unless otherwise defined, the term "second limiting portion" shall be interpreted as: a structure provided on the push member, which is used to ensure that the moving contact and the static contact maintain a reliable disconnection gap through physical blocking when the moving contact is disconnected, or to lock the moving contact in an intermediate isolation position.

[0120] In the claims and description of the present invention, unless otherwise specified, the term "housing" should be interpreted as referring to the external cover of the relay, which is used to accommodate and protect internal components such as the contact part, the pushing part and the driving part.

[0121] In the claims and description of the present invention, unless otherwise defined, the term "driving part" should be interpreted as referring to a component that receives an external signal and generates power to drive the propulsion part to move, which in the present invention includes a motor and a transmission mechanism.

[0122] In the claims and description of the present invention, unless otherwise defined, the term "rotating part" should be interpreted as: a core rotating component in a transmission mechanism, such as a crankshaft or a cam, which is used to convert the power of the driving part into a specific motion (such as swinging or linear motion).

[0123] In the claims and specification of the present invention, unless otherwise specified, the terms "first engaging portion and second engaging portion" shall be interpreted as referring to a pair of cooperating structures, provided on the rotating member and the pushing member, respectively, for transmitting the rotational motion of the rotating member into the swinging or linear motion of the pushing member. For example, one of the first engaging portion and the second engaging portion may be a sliding pin and the other may be a sliding groove.

[0124] Example 1

[0125] The first embodiment 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 of its branches. The push portion 200 is used to push the switch of the contact portion 100 to close or open. The drive portion 300 is used to receive external signals or stimuli to drive the push portion 200. The housing accommodates the contact portion 100, the push portion 200, and the drive portion 300.

[0126] The driver 300 is the relay's power source, responsible for receiving external control signals and generating mechanical motion. The pusher 200, acting as the transmission hub, precisely transmits the motion generated by the driver 300 to the contactor 100. The contactor 100 is the final component that switches the circuit on and off, and the state of its internal switch is directly controlled by the action of the pusher 200.

[0127] The pushing portion 200 involved in the first embodiment 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 static contact 141. Before introducing the pushing portion 200, the contact portion 100 is first introduced.

[0128] like Figure 1 As shown, the contact portion 100 includes a mounting base 150 and at least two switches, and all the switches form 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 static contact 141 for closing or opening the switch. In this embodiment, the contact portion 100 includes three switches, namely a first switch 121, a second switch 122, and a third switch 123, wherein the third switch 123 can refer to Figure 3In this embodiment, the mounting base 150 serves as a mounting base for the moving contacts and the static contacts in each switch in the contact portion, and the mounting base 150 is fixedly connected to the housing. The fixing method of the two can be fastener connection, clamping, welding, etc.

[0129] At least two of the switches form a first switch group 111. 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 static contact 141 of each switch is located on both sides of the common moving contact 137 along the movement direction of the common moving contact 137 and is injection molded integrally with the mounting base 150. In this embodiment, the common moving contact 137 swings on a plane perpendicular to the Y-axis direction, and its effective movement direction is the Z-axis direction. Therefore, the main movement direction of the common moving contact 137 can be regarded as the Z-axis direction. The static 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 static 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 opened with the static contacts 141 on both sides of its movement direction. Figure 1 、 Figure 2 and Figure 7 In the two switches of the first switch group 111, two static contacts 141 are spaced apart along the Z-axis and each has a static contact 142. The static contacts 142 of the two static contacts 141 are symmetrically arranged at a predetermined distance along the Z-axis. The static contacts 142 of the two static contacts 141 facing each other are configured to cooperate with the movable contact 132 on the common movable contact 137. The common movable contact 137 has movable contacts 132 on both sides of its surface along the Z-axis. The two sets of movable contacts 132 on the common movable contact 137 correspond to the static contacts 142 of the two static contacts 141. Driven by the push portion 200, the common movable contact 137 can have one set of movable contacts 132 connected to or disconnected from the corresponding static contact 142, or disconnected from both static contacts 142. In other words, the two sets of movable contacts 131 on the common movable contact 137 are spaced a predetermined distance from the corresponding static contacts 142.

[0131] Each movable contact comprises 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 static contact 141. Specifically, in the first embodiment, the common movable contact 137 adopts a flexible movable contact 131, such as Figure 1 and Figure 2 As shown, the flexible movable contact 131 includes a fixed portion 134, an actuating portion 135, and a flexible connecting portion 136. The fixed portion 134 is fixed relative to each stationary contact 141 and is used to lead out the connection terminal. The fixed portion of the flexible movable contact is the fixed end 138 of each movable contact, and the actuating portion is the movable end 139 of each movable contact.

[0132] In this embodiment, the fixed portion 134 of each flexible moving contact 131 extends along the X-axis and is therefore perpendicular to the main movement direction of the moving contact 131, i.e., the Z-axis. The actuating portion 135 is adapted to swing relative to the fixed portion 134 along the movement direction of the moving contact 131 to close or open with the static contact 141. The flexible connecting portion 136 connects the fixed portion 134 and the actuating portion 135 and is adapted to bend. In this embodiment, the flexible moving contact 131 is made of a laminated metal sheet. Specifically, the two ends of the laminated metal sheet are connected to the fixed portion 134 and the actuating portion 135, respectively, by welding. Alternatively, the two ends of the laminated metal sheet are bonded, pressed, or welded to form the fixed portion 134 and the actuating portion 135, and the middle portion of the laminated metal sheet forms the flexible connecting portion 136. In this embodiment, the common moving contact 137 of the flexible moving contact 131 has its flexible connecting portion 136 located at different positions along the movement direction of the common moving contact 137, particularly along the main movement direction, i.e., the Z-axis. The end of the flexible connection portion 136 connected to the actuating portion 135 is located along the Z-axis between the static contact 141 of the first switch 121 and the static contact 141 of the second switch 122. The section of the flexible connection portion 136 connected to the fixed portion 134 is located along the Z-axis below the end of the flexible connection portion 136 connected to the actuating portion 135. The actuating portion 135 extends along the X-axis in the disconnected state. That is, in the disconnected state, the extension direction of the actuating portion 135 is the lengthwise direction of the movable contact 131. The actuating portion 135 can be connected to the pushing portion 200, so that the movable contact 131 can be driven by the pushing portion 200 to swing the actuating portion 135 relative to the fixed portion 134. The movable contact point 132 of the movable contact 131 is disposed on the actuating portion 135.

[0133] Reference Figure 1 and Figure 2The actuating portion 135 of the movable contact 131 has a certain width, with the width of the actuating portion 135 being oriented in the Y-axis direction. The end of the actuating portion 135 opposite the flexible connecting portion 136 along the X-axis forms a pushed portion 133. 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. The width of the actuating portion 135 is smaller than the width of the portion housing the movable contact 132, and the pushed portion 133 is located approximately in the middle of the width of the actuating portion 135. Of course, it is worth noting that, in some possible embodiments, the portion of the dynamic contact 131 used to connect with the pushing portion 200 may also be directly composed of the portion of the action portion 135 corresponding to the installation of the dynamic contact 132. In this case, the action portion 135 does not need to extend other portions to form the pushed portion 133. In order to ensure the current-carrying capacity of the dynamic contact 131, the width of the action portion 135 may be consistent with the width of other current-carrying portions on the dynamic contact 131 and ensure a uniform width at each position without the need to reduce it at a local position.

[0134] Reference Figure 3 and Figure 4 Contact portion 100 further includes a second switch group 112 consisting of a single switch, which is a third switch 123. Third switch 123 utilizes the same flexible movable contact 131 as the two switches in first switch group 111, except that this movable contact 131 does not serve as a common movable contact 137. The stationary contact 141 of third switch 123 is located below movable contact 131 along the Z axis, with the stationary contact point 142 and movable contact 132 of the third switch 123 positioned opposite each other.

[0135] Furthermore, at least one switch in the first switch group 111 and at least one switch in the second switch group 112 share a static contact 141, and the shared static contact 141 forms a common static contact 143. Specifically, in the first embodiment, the first switch group 111 and the second switch group 112 share one static 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 one static contact 141, and the static contact 141 is a common static contact 143. Figure 2 、 Figure 4 and Figure 5 The common static contact 143 is provided with static contacts 142 corresponding to the first switch 121 and the third switch 123, respectively. The static contact 142 of the first switch 121 is downward along the Z-axis direction, and the static contact 142 of the third switch 123 is upward along the Z-axis direction.

[0136] Among them, all the moving contacts 131 are linked to each other so that the contact part 100 has at least three contact states, the common moving contact 137 and the common static contact 143 in the first switch group 111 are closed and the dynamic contact 131 and the common static contact 143 in the second switch group 112 are disconnected to form a first contact state, the common moving contact 137 and the other static contact 141 in the first switch group 111 are closed and the dynamic contact 131 and the common static contact 143 in the second switch group 112 are closed to form a second contact state, and each switch in the first switch group 111 and the second switch group 112 are disconnected to form a third contact state. Specifically, the pushing portion 200 causes the common movable contact 137 in the first switch group 111 and the movable contact 131 in the second switch group 112 to swing in the same direction. That is, when the actuating portion 135 of the common movable contact 137 is lifted in the Z-axis direction, the actuating portion 135 of the movable contact 131 of the first switch 121 is also lifted in the Z-axis direction, at which point the first switch 122 is closed and the third switch 123 is opened. Conversely, when the actuating portion 135 of the common movable contact 137 is moved downward in the Z-axis direction, the actuating portion 135 of the movable contact 131 of the third switch 123 is also moved downward in the Z-axis direction, at which point the first switch 121 is opened, the second switch 122 is closed, and the third switch 123 is closed. This also includes a state where both the first switch 121 and the second switch 122 are opened, at which point the third switch 123 is also opened. In the first embodiment, the state of the first switch 121 being closed is set as the first contact state, the state of only the second switch 122 and the third switch 123 being closed is set as the second contact state, and the state of the first switch 121, the second switch 122, and the third switch 123 being open is set 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 static contact 142 of the static 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 static contact 143 has static contact portions 144 corresponding to the two switches to which it belongs. The static contact portions 144 are provided with static contacts 142 for cooperating with the movable contact 132 on the movable contact 131. The switches corresponding to the two static contact portions 144 have opposite closing directions. Specifically, the common static contact 143 has static contact portions 144 corresponding to the first switch 121 and the third switch 123. Both static contact portions 144 are provided with static contacts 142. The static contact 142 on the static contact portion 144 corresponding to the common movable contact 137 in the first switch 121 is arranged with a first end along the Z-axis direction facing the movable contact 142 of the movable contact 131. The static contact 142 on the static contact portion 144 corresponding to the movable contact 131 in the third switch 123 is arranged with a second end along the Z-axis direction facing the movable contact 131. The first and second ends face opposite directions in the Z-axis direction, so the switches corresponding to the two static contact portions 144 have opposite closing directions. When the movable ends 139 of the two movable contacts 131 are swung to the same side along the Z-axis direction, 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 , the static contact 141 and the dynamic contact 131 in the contact portion 100 are both fixedly connected to the mounting base 150. Among them, the mounting base 150 includes a base body 151 and a connecting member 152, the base body 151 is made of plastic, and the connecting member 152 is made of metal. The static contact 141 and the static contact head 148 (refer to the following description) are injection molded as one piece with the base body 151, and the connecting member 152 is injection molded as one piece with the base body 151. The fixed end 138 of the dynamic contact 131 is then fixedly connected to the connecting member 152. The fixing method of the dynamic contact 131 and the connecting member 152 can be riveting, welding, screwing or connection through fasteners. In the first embodiment, the dynamic contact 131 and the connecting member 152 are fixedly connected by riveting. In addition, the relay is connected to the external circuit through a connecting terminal (not shown in the figure). In embodiment one, the connecting member 152 can be a conductive metal, and the connecting terminal electrically connected to the moving contact 131 can be formed or set on the connecting member 152, and the direction in which the connecting terminal is led out of the relay can be set arbitrarily as needed; at the same time, the connecting terminal electrically connected to the static contact 141 can be directly formed or set on the static contact 141, and can be led out of the relay in any direction as needed.

[0139] Wherein, at least a portion of the common static contact 143 and the mounting seat 150 are integrally formed by injection molding. Figure 9 and Figure 10In the first embodiment, the common static contact 143 is an integrated 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 static contact 143 is at least injection-molded with the mounting base 150 as a whole; the first contact portion 145 and the second contact portion 146 are provided with a static contact 142 for cooperating with the moving contact 132 on the moving contact 131. Figure 12 and Figure 13 In this embodiment, the second contact portion 146 and the connecting portion 147 on the common static contact 143 are integrally formed with the seat body 151 of the mounting seat 150 by injection molding.

[0140] Reference Figure 5 , the first switch group 111 and the second switch group 112 are arranged in the first direction; Figure 9 and Figure 10 The first contact portion 145, the connecting portion 147, and the second contact portion 146 of the common static contact 143 are arranged in sequence 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. Figure 9 and Figure 10 The first contact portion 145 and the second contact portion 146 are also staggered in the third direction, and static contacts 142 are provided on the sides facing each other; the connecting portion 147 extends in the third direction; and 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 the third direction; and the connecting portion 147 is perpendicular to the first direction. In the first embodiment, the common static contact 143 is a single, stamped and bent conductive metal member. This common static contact 143 can serve as the static contact 141 for both the first and third switches. To this end, the first contact portion 145 and the second contact portion 146 are provided on this common static contact 143. The first contact portion 145 and the second contact portion 146 are approximately parallel sheet-like platforms, with static contacts 142 provided on their extended surfaces, and their principal planes perpendicular to the Z-axis. The connecting portion 147 connects the first contact portion 145 and the second contact portion 146 and extends primarily within a plane defined by the X-axis and Z-axis directions, thereby achieving spatial misalignment between 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 the first direction; the connecting portion 147 of the common static contact 143 is at least partially injection-molded as one piece with the partition wall 153. Furthermore, in the first embodiment, the two static contacts 141 corresponding to the two switches in the first switch group 111 are arranged on either side of the movable contact 131 along the third direction. One of the static contacts 141 is a common static contact 143, the first contact portion 145 of which extends from the partition wall 153 and corresponds to the common movable contact 137, and the other static contact 141 is injection-molded as one piece with the mounting base 150. The static contact 141 corresponding to a switch in the second switch group 112 is a common static contact 143, the second contact portion 146 of which extends from the partition wall 153 and corresponds to the movable contact 131 of the switch, and is injection-molded as one piece with the mounting base 150. In embodiment one, the partition wall 153 of the mounting seat 150 is a raised wall-like structure formed on the seat body 151, which extends in the X-axis direction, protrudes and extends in the Z-axis direction, and has a certain thickness dimension in the Y-axis direction, and separates the first switch group 111 and the second switch group 112 in the Y-axis direction, and its height dimension in the Z-axis direction is roughly adapted to the range defined by the two switch groups. The extension direction of the connecting portion 147 of the common static contact 143 is substantially consistent with that of the partition wall 153. At the same time, the connecting portion 147 of the common static contact 143 is firmly embedded in the partition wall 153 of the mounting seat 150 during the injection molding process. In the Y-axis direction, the first contact portion 145 extends from the partition wall 153 toward one side of the first switch group 111, and the second contact portion 146 extends from the partition wall 153 toward one side of the second switch group 112. Since the second contact portion 146 is closer to the lower part of the seat body 151 along the Z-axis direction, the second contact portion 146 is directly injection molded with the seat body 151.

[0143] Reference Figure 7 and Figure 8 The connection terminals 161 of the static contacts 141 in the first switch group 111 and the second switch group 112 for external connection are led out to the mounting base 150 in the same direction 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 static contact 141, which is integrally molded with the mounting base 150, except for the common static contact 143, is cylindrical. One end of the static contact 141 along its extension direction is exposed from the mounting base 150 and forms a terminal 161, while the other end is exposed from the mounting base 150 and is provided with a static contact 142 for cooperating with the moving contact 132 on the common moving contact 137. In the first embodiment, the static contact 141 is an integral metal cylinder, which extends along the Z-axis direction, and its upper end (such as Figure 1) part is exposed from the mounting seat 150, and a static contact 142 is provided on the end face for cooperating with the upper moving contact 132 of the common moving contact 137, and its lower end part passes through the bottom surface of the mounting seat 150 and is directly used as the terminal 161.

[0145] Reference Figure 8 and Figure 10 The second switch group 112 also includes a static contact 148 that is integrally molded with the mounting base 150. One end of the static contact 148 is connected to the second contact portion 146 of the common static contact 143, and the other end is exposed from the mounting base 150 to form a terminal 161. In the first embodiment, the second contact portion 146 of the common static contact 143 does not directly lead to the terminal 161, but is electrically connected to the outside through a static contact 148. Figure 10 As shown, the static contact 148 is a separate metal component. Its upper end is securely connected to the second contact portion 146 of the common static contact 143 before injection molding, and its lower end is designed to extend through the terminal 161 on the bottom surface of the mounting base 150. During the injection molding process, the static contact 148, along with the connecting portion 147 of the common static contact 143 and the main body of the static contact 148, are embedded in the mounting base 150. Alternatively, the static contact 148 may simply contact the second contact portion 146 of the common static contact 143 before injection molding to establish an electrical connection. During the injection molding process, the base 151 itself secures the static contact 148 and the common static contact 143, connecting them as a single unit.

[0146] Reference Figure 7 and Figure 8 The connecting member 152 defines an extension direction. Along the extension direction, one end of the connecting member 152 or part of the connecting member 152 is exposed from the base body 151 to form a riveted end 156. The moving contact 131 is riveted to the riveted end 156 along the extension direction. A connecting hole 154 for external connection is provided at one end of the connecting member 152 along the extension direction. The connecting member 152 is provided with a protrusion 155 that is perpendicular to the extension direction and protrudes outward. The protrusion 155 is at least partially embedded in the base body 151. The protrusion 155 forms a riveted end 156 at one end of the extension direction and a holding end 157 at the other end of the extension direction. The holding end 157 is exposed from the base body 151. Figure 11The base body 151 is provided with a holding hole 158 along its extension direction for exposing the holding end 157 from the base body 151. In the first embodiment, the connector 152 is generally a cylindrical member with an open-ended countersunk hole disposed therein. This countersunk hole serves as the connection hole 154. The connection hole 154 can be connected to an external connection terminal via a stud or the like to achieve electrical connection with an external circuit component, thereby enabling the relay to be mounted to the external circuit component. Similarly, the connection hole 154 can also be provided in the static contact 148 and the independent cylindrical static contact 141. The connecting member 152 extends in the Z-axis direction. A majority of the connecting member 152 is integrally injection-molded with the base 151. One end portion is exposed on the surface of the base 151 and forms a riveted end 156. The riveted end 156 may have a knurled structure similar to that found on conventional rivet nuts or a protruding structure with a pointed tip. The fixing portion 134 of the movable contact 131 may be riveted to the riveted end 156 of the connecting member 152 along the connecting member's extension direction, thereby securing the movable contact 131 to the mounting base 150 and establishing an electrical connection between the movable contact 131 and the connecting member 152. A protrusion 155 is provided on the outside of the connecting member 152, proximate the riveted end 156, and projects outward perpendicularly to the Z-axis. The protrusion 155 may be disposed around the periphery of the connecting member 152. The downward-facing end of the protrusion 155 along the Z-axis forms the riveted end 156, while the upward-facing end forms a supporting end 157. A supporting hole 158 is also provided along the Z-axis in the base body 151. The upper end of the supporting hole 158 is open, exposing the supporting end 157. During the riveting assembly of the movable contact 131, an external fixture can be directly supported on the supporting end 157 through the supporting hole 158 in the base body 151. This allows the significant impact force generated during the riveting operation to be borne directly by the metal connector 152 and the external fixture, rather than being transmitted to the relatively fragile plastic base body 151. This effectively prevents cracking or deformation of the base body 151 during assembly, and prevents deformation of the connecting hole 154.

[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 connection. Specifically, the connector 152 is a columnar structure extending in the Z-axis direction. A portion of the connector 152 exposed from the surface of the base 151 in the Z-axis direction forms a terminal for external connection to an external connection terminal. The direction in which the connection terminal leads to the relay can be set as needed to electrically connect to an external circuit component.

[0148] Further, refer to Figure 9At least a portion of the surface of the portion of the first switch assembly 111 where at least a portion of the static contact 141 is embedded in the mounting seat 150 is provided with a pattern 162 to increase the contact area with the mounting seat 150 and prevent the static contact 141 from rotating relative to the mounting seat 150. Figure 7 and Figure 8 At least a portion of the surface of the portion where the connecting member 152 is embedded in the seat body 151 is provided with a pattern 162 to increase the contact area with the seat body 151 and prevent the connecting member 152 from rotating relative to the mounting seat 150. Figure 10 , at least part of the surface of the portion where the static contact 148 is embedded in the mounting seat 150 is also provided with a pattern 162. In order to ensure a stronger connection between the metal prefabricated parts such as the static contact 141, the static contact 148, the connecting part 152 and the plastic mounting seat 150, these metal parts are processed with a pattern 162 on the surface of the portion embedded in the plastic. Figure 9 and Figure 10 The cross pattern shown on the static contact 148 can be a knurling, a groove or a projection. During injection molding, the molten plastic is filled into the gaps in these patterns 162 and forms a firm mechanical interlocking structure after cooling and solidification.

[0149] In this embodiment, the contact portion 100 includes at least two switches, the length directions (i.e., X-axis directions) of the movable contacts 131 are parallel to each other in a preset projection plane, and the swing ends of at least two adjacent movable contacts 131 are located at the same end or different ends of the length directions. Figures 1 to 4 The first switch group 111 and the second switch group 112 include two movable contacts 131. Each movable contact 131 has a fixed portion 134, a flexible connection portion 136, and an actuating portion 135. The length direction of the movable contact 131 can be considered the extension direction of the fixed portion 134 and the actuating portion 135, that is, the X-axis direction in the first embodiment. The actuating portion 135 of the movable contact 131 is the swinging end of the movable contact 131. In the first embodiment, the fixed portion 134 of the movable contact 131 of 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. The fixed portion 134 of the movable contact 131 of the second switch group 112 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. Therefore, in the first embodiment, the swinging ends of two adjacent movable contacts 131 are located at different ends in their length direction. Of course, in other embodiments, the swinging ends of two adjacent movable contacts 131 may also be located at the same end in their length direction.

[0150] The pushing portion 200 is connected to the movable contact 131 of each switch in the contact portion 100 to push each movable contact 131 to close or open with the corresponding static contact 141. The structure of the pushing portion 200 is described in detail below.

[0151] Reference Figures 1 to 4 The pushing portion 200 includes two pushing units 220 and two rotating members 210. The two pushing units 220 are respectively provided 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 suitable for being driven to move along a predetermined direction to push at least one moving contact 131 and the static contact 141 to close or open. The pushing unit 220 can be driven to move by the driving portion 300. The overall movement of the pushing unit 220 can be linear or swinging. The first elastic member 223 is provided 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 contact pressure to close with the static contact 141 when the moving contact 131 and the static contact 141 are closed.

[0152] In the first embodiment, the structures of the push units 220 used in the first switch group 111 and the second switch group 112 are different, but both push units 220 swing along a predetermined direction, and the first direction is perpendicular to the tangent of the movement direction of the push unit 220 at at least one position where the push unit 220 moves along the predetermined direction. The movement trajectory of the push unit 220 is an arc line. When the swing amplitude of the push unit 220 is small, the direction of the effective stroke in the swing direction for driving the dynamic contact 131 to move is the Z-axis direction. When the dynamic contact 131 is in the third contact state, that is, when the action portion 135 of the dynamic contact 131 extends approximately along the X-axis direction, the push unit 220 is approximately at the midpoint of its movement trajectory. The tangent of the movement trajectory at this midpoint is perpendicular to the X-axis direction, that is, the tangent is along the Z-axis direction.

[0153] First, the pushing unit 220 and the auxiliary structure in the first switch group 111 are described. Figure 1 and Figure 2In the first switch group 111, a pusher 226 is used to switch the states of the first switch 121 and the second switch 122. The pusher 226 includes a pusher 222 and a connector 221. The pusher 222 abuts against the first elastic member 223 along the Z-axis. The pusher 222 and the pushed portion 133 of the common movable contact 137 can be provided with a socket post for socketing with the first elastic member 223. The two ends of the spring-shaped first elastic member 223 can be socketed onto the socket post, thereby preventing the first elastic member 223 from separating from the pusher 222 and the pusher 222 and the common movable contact 137. The pusher 222 can apply force to the first elastic member 223 to drive the action portion 135 of the common movable contact 137 to swing. The connector 221 can be integrally formed with the pusher 222 or separately fixedly provided. The connector 221 can cooperate with the rotating member 210 to enable the pushing unit 220 to move as a whole. The pusher 222 has sidewalls 228 on either side of the first direction, which is the Y-axis. The pusher 222 also has a bottom wall and a top wall along the Z-axis. The bottom wall, top wall, and two sidewalls 228 enclose the pusher 222 to form a frame-like structure. The connector 221 is positioned above the top wall of the pusher 222 along the Z-axis.

[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 long and extend along the X-axis. An axis connection portion 231, an extension portion 232, and a push connection portion 233 are provided along the length of the metal swing arm 230. The axis connection portion 231 is pivotally connected to the rotating shaft 240, and the rotating shaft 240 is fixedly connected 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 axis connection portion 231 and the push connection portion 233. The push connecting portion 233 is connected to the side wall 228 of the pusher 222 to achieve a fixed connection between the metal swing arm 230 and the pusher 222. The push connecting portion 233 can be connected to the side wall 228 of the pusher 222 by insert injection molding, riveting, welding, bonding, etc., or it can be connected to an intermediate piece fixed to the pusher 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 2, the rotating member 210 is provided with a first matching portion, which can be driven by the driving part 300 to rotate around the first axis; the pushing member 226 is provided with a second matching portion that slides and matches with the first matching portion in a direction perpendicular to the first axis, so as to be driven by the rotating member 210 to swing around a second axis parallel to the first axis or move linearly along a third direction. Moreover, when the pushing unit 220 pushes at least one dynamic contact 131 and the static contact 141 to close, the direction of the force applied by the second matching portion to the first matching portion passes through or approaches the first axis. Among them, one of the first matching portion and the second matching portion is a sliding groove 227 extending in a direction 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, and the sliding pin 212 is offset relative to the first axis. In embodiment one, a sliding pin 212 is provided on the rotating member 210, and a sliding groove 227 is provided on the connecting body 221. With reference 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. Figure 15 The rotating member 210 includes a main shaft 211 connected to the driving part 300 and a sliding pin 212 eccentrically arranged relative to the main shaft 211. The imaginary line passing through the main shaft 211 of the rotating member 210 along the Y-axis direction is the first axis. As the rotating member 210 rotates, the sliding pin 212 slides in the sliding groove 227 and applies force to the pusher 226. The pusher 226 is restricted by the metal swing arm 230 and the rotating shaft 240 and swings roughly in the Z-axis direction, thereby driving the action 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 The common movable contact 137 is now disconnected from both static contacts 141. The rotating member 210 then rotates 90° clockwise, causing the sliding pin 212 to swing 90° about the first axis. The sliding pin 212 is at its highest position along the Z-axis. The actuating portion 135 of the common movable contact 137 now swings upward, causing the movable contact 132 on the upper side of the actuating portion 135 along the Z-axis to contact the static contact 142 on the upper side of the common movable contact 137 along the Z-axis, closing the first switch 121. The rotating member 210 then rotates 90° counterclockwise, returning the common movable contact 137 to its third contact state. Then the rotating part 210 rotates 90° counterclockwise, and the sliding pin 212 swings 90° around the first axis. The sliding pin 212 is located at the lowest position along the Z-axis direction. At this time, the action part 135 of the common moving contact 137 swings downward, and the moving contact 132 located on the lower side of the action part 135 along the Z-axis direction contacts the static contact 142 located on the lower side of the common moving contact 137 along the Z-axis direction, closing the second switch 122.

[0156] Furthermore, when the sliding pin 212 is at its highest and lowest positions along the Z-axis, that is, when the push unit 220 pushes the common movable contact 137 to close with either of the static contacts 141, the direction of the force applied by the sliding slot 227 to the sliding pin 212 is vertical and actually passes through the first axis. Taking into account operational errors, the force applied by the sliding slot 227 to the sliding pin 212 can also be considered to be close to the first axis. The force applied by the sliding slot 227 to the sliding pin 212 here is a positive force or reaction force generated by the push unit 220 as a whole, applied to the movable contact 131, on the rotating member 210. The reaction force occurs when the electromotive repulsion 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 that share a common movable contact 137. Therefore, it includes two first elastic members 223. These two first elastic members 223 are located above and below the pushed portion 133 of the common movable contact 137, respectively, along the Z-axis direction, and abut against the pushed portion 133 of the common movable contact 137. The first elastic members 223 are springs. The pushed portion 133 of the common movable contact 137 and the pushing body 222 can be provided with a socket post for socketing with the first elastic members 223 to ensure the stability of the first elastic members 223. The two first elastic members 223 abut against the pushing body 222 at the bottom and top walls of the pushing body 222, respectively. This allows the pushing member 226 to apply force to the common movable contact 137 along the Z-axis direction using the first elastic members 223. Furthermore, since two first elastic members 223 are provided in the first switch group 111 , the first elastic members 223 can achieve an overtravel closing effect when the first switch 121 and the second switch 122 are closed.

[0158] Next, the pushing unit 220 and the auxiliary structure in the second switch group 112 are described. Figure 3 and Figure 4The pushing unit 220 in the second switch assembly 112 switches the state of the third switch 123 via a pushing member 226. The pushing member 226 includes a pushing body 222 and a connecting body 221. Unlike the pushing unit 220 in the first switch assembly 111, since the movable contact 131 in the third switch 123 has only one closing direction, the pushing unit 220 is provided with only a first elastic member 223. The upper end of the first elastic member 223 is connected to the top wall of the pushing body 222 in abutting manner, and the lower end is connected to the actuating portion 135 of the movable contact 131 in abutting manner. At the same time, the pushing body 222 is provided with an overlapping portion 229. The overlapping portion 229 is a flange structure that protrudes from the bottom edges of the two side walls 228 of the pushing body 222 in the Y-axis direction. The action portion 135 of the dynamic contact 131 will overlap the overlapping portion 229 under the force of the first elastic member 223, but after the pushing unit 220 pushes the action portion 135 of the dynamic contact 131 to swing downward along the Z-axis direction until the third switch 123 is closed, the action portion 135 of the dynamic contact 131 will leave the overlapping portion 229 and achieve an overtravel closing effect under the action of the first elastic member 223. The matching structure and relative movement 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 portion 229 can also be set as a bottom wall connected to the bottom edge of the two side walls 228 along the Z-axis direction, and the bottom wall forms a through hole corresponding to the dynamic contact 132 that passes through the Z-axis direction and is used for avoidance, and the dynamic contact 132 can contact the corresponding static contact 142 through the through hole.

[0159] Furthermore, in the first embodiment, the actions of the two pushing units 220 corresponding to the first switch group 111 and the second switch group 112 are linked to each other so that the movable contacts 131 in the first switch group 111 and the second switch group 112 have the same motion state. Specifically, the two pushing units 220 are driven by the torque output by the driving part 300 and transmitted to the rotating member 210, and the position states of the two rotating members 210 are consistent at the same time. For example, when the rotating member 210 linked to the pushing unit 220 corresponding to the first switch group 111 rotates to the highest position along the Z-axis direction, the common movable contact 137 swings upward to close the first switch 121. At the same time, the movable contact 131 in the second switch group 112 also swings upward under the action of the other rotating member 210 on the pushing unit 220, so that the third switch 123 is disconnected. Alternatively, when the rotating member 210 linked to the pushing unit 220 corresponding to the first switch group 111 rotates to the lowest position along the Z-axis direction, the common movable contact 137 swings downward to close the second switch 122. 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, so that the third switch 123 is closed; or, when the rotating member 210 linked to the pushing unit 220 corresponding to the first switch group 111 rotates to the middle position along the Z-axis direction, the common moving contact 137 is located in the middle of the corresponding two static contacts 141, the first switch 121 and the second switch 122 are disconnected, 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, so that the third switch 123 is disconnected.

[0160] In addition, refer to Figure 3 and Figure 4 The pusher unit 220 in the second switch assembly 112 is swingably connected to the mounting base 150 via a swing block 250 and a rotating shaft 240. Since the movable contact 131 in the second switch assembly 112 does not serve as the common movable contact 137, the swing block 250 can be a solid, flat member extending a certain length along the X-axis. Its width is roughly the same as the width of the movable contact 131. One end of the swing block 250 can be connected to the pusher 226 of the second switch assembly 112, or the two can be integrally formed components. The other end is pivotally connected to a rotating shaft 240, which is in turn fixedly connected or pivotally connected to the mounting base 150.

[0161] Furthermore, the above-mentioned pushing unit 220 is driven by a driving part 300 with an in-place locking function or driven by a transmission mechanism with a mechanical self-locking function to push at least one dynamic contact 131 and a static contact 141 to close or disconnect and at least latch the state of the corresponding dynamic contact 131 in the closed position.

[0162] The drive unit 300 includes a motor with a lock-in-place function. The pusher 226 is driven by the rotating member 210, which is driven by the motor to rotate about a first axis. Specifically, the motor with a lock-in-place 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, the motor's inherent stepping torque or mechanical brake prevents unintended rotation of the rotating member 210, even when powered off.

[0163] In addition, refer to Figure 7 and Figure 14 The pusher 226 is provided with a first limiting portion 224, which is arranged corresponding to the closing direction of the movable contact 131 and extends a preset length along the Y-axis direction to contact or approach the movable contact 131 along the closing direction of the movable contact 131 when the movable contact 131 and the static contact 141 are closed, and to limit the distance between the movable contact 131 and the static contact 141. Figure 4 and Figure 7 , for the two different pushers 222, the number and structure of the first limiting portions 224 are different. The pusher 222 of the first switch group 111 is provided with two first limiting portions 224 respectively located on both sides of the common movable contact 137 along the Z-axis direction, and the pusher 222 of the second switch group 112 is provided with a first limiting portion 224 located above its movable contact 131 in the Z-axis direction (such as Figure 1 The first limiting portion 224 may be integrally formed on the pushing body 222 .

[0164] The first limiting portion 224 extends along the Y-axis direction by a preset length, which can be in two situations. Figure 4 , the inner side of the side wall 228 of the pushing body 222 is provided with a first limiting portion 224 on both sides of the Y-axis direction for limiting the swing range of the moving contact 131 by cooperating with the action portion 135 of the moving contact 131 in the closed state. The first limiting portion 224 here has two parts that can be regarded as independent of each other. Both parts are formed on the pushing body 222 and have a certain thickness in the Y-axis direction, that is, the first limiting portion 224 extends a preset length in the first direction. It should be understood that in Figure 4In the example provided, the pushing body 222 includes two parts (defined as a first pushing part and a second pushing part respectively), wherein the first pushing part is fixedly connected to the connecting body 221. For example, the first pushing part and the connecting body 221 are both plastic and molded as one piece, and are used for the first elastic member 223 to abut. The second pushing part has two connecting walls and a bottom wall. The two connecting walls are spaced apart along the Y-axis direction and are respectively fixedly connected to the two sides of the first pushing part along the Y-axis direction and constitute two side walls 228; the bottom wall is connected to the bottom edges of the two connecting walls along the Z-axis direction and constitutes a lap portion 229. For the second case, please refer to Figure 7 and Figure 14 The portion along the Y-axis between the two side walls 228 of the pusher 222 forms a wall-like structure extending a long distance along the Y-axis. This wall-like structure forms a first stopper 224 extending a predetermined length in the Y-axis. Furthermore, in the second embodiment, the two edges of the wall-like first stopper 224 along the Y-axis can be connected to the two side walls 228 of the pusher 222. In other words, the first stopper 224 partially blocks the opening of the pusher 222 along the X-axis, which is originally formed by the side walls 228, the top wall, and the bottom wall.

[0165] Based on the above, it can be understood that Figure 7 and Figure 14 In this embodiment, the pusher 226 is provided with side walls 228 on either side of the movable contact 131 along the first direction. The first stopper 224 is disposed between the side walls 228 along the first direction. The first stopper 224 has a wall-like structure, with its two edges along the first direction correspondingly connected to the side walls 228. Alternatively, as in the second switch assembly 112, the first stopper 224 can be disposed perpendicular to or at an angle to the first direction.

[0166] It should be noted that, although the first limiting portion 224 is limited to extend a preset length along the Y-axis direction, this only indicates that the first limiting portion 224 as a whole has an extension tendency in the Y-axis direction, and does not mean that the first limiting portion 224 can only extend along the Y-axis direction. For example, the first limiting portion 224 can extend obliquely relative to the Y-axis direction, but as a whole it still extends in the Y-axis direction, and it has a component of extension along the Y-axis direction.

[0167] In embodiment one, the first limiting portion 224 provided on the pushing member 226 in the first switch group 111 extends in a wall shape and is located between the moving contact 132 and the pushed portion 133 of the common moving contact 137 along the X-axis direction, and the pushing member 226 is provided with a first limiting portion 224 on the static contacts 141 on both sides corresponding to the two closing directions of the common moving contact 137.

[0168] As a preferred embodiment, when the movable 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 of the side surfaces of the first limiting portion 224 along the X-axis) forms an angle with a reference plane defined by the Y-axis and the Z-axis. In other words, the extended surface of the wall-shaped first limiting portion 224 can be arranged to be inclined at a certain angle relative to the reference plane. For example, when the first limiting portion 224 is located above the movable contact 131 along the Z-axis, the projection of the lower edge of the first limiting portion 224 perpendicular to the Z-axis is a straight line at a certain angle to the Y-axis.

[0169] Alternatively, when the movable contact 131 is in one of the disconnected positions separated from the static contact 141, at least a portion of the extending surface of the first limiting portion 224 is perpendicular to the X-axis direction. Figure 7 In the structure shown, the first limiting portion 224 is located above the movable contact member 131 along the Z-axis direction as an example. At this time, the projection of the lower edge of the first limiting portion 224 perpendicular to the Z-axis direction is a straight line parallel to the Y-axis direction.

[0170] In addition, the pusher 226 of the first switch assembly 111 is further provided with a second limiter 225. The second limiter 225 is arranged corresponding to the closing direction of the common movable contact 137. When the pusher 226 drives the common movable contact 137 to disconnect from the static contact 141 on either side, the second limiter 225 blocks the movement of the common movable contact 137 in the closing direction toward the static contact 141 on that side, thereby ensuring that the common movable contact 137 is disconnected from the static contact 141 on that side. In the first embodiment, the first limiter 224 of the common movable contact 137 corresponding to any closing direction serves as the second limiter 225 corresponding to the other closing direction.

[0171] In the above embodiment, the static contacts 141 and mounting base 150 in the first switch group 111 are integrally formed by injection molding and cooperate with each other on both sides of a common movable contact 137, thereby improving the assembly accuracy and structural stability issues of the conventional relay contact portion 100. Furthermore, the integral injection molding of the static contacts 141 and mounting base 150 allows the position of each static contact 141 to be defined and guaranteed by the high-precision injection mold. During the injection molding process, the placement of each pre-formed static contact 141 can be precisely set. After the plastic material cools and solidifies, the position of each static contact 141 in the mounting base 150 can be fixed, thereby eliminating the cumulative errors caused by part tolerances, tooling positioning errors, and assembly operation errors when fixing the static contacts 141 one by one using traditional assembly methods. This ensures precise control of the matching accuracy between the dynamic contact 131 and different static contacts 141, allowing the dynamic contact 131 to form a high-precision match with the static contact 141 in both the open position and the two closed positions, thereby providing structural guarantees for the relay to obtain reliable pull-in, release characteristics and electrical performance, which is conducive to reducing the electrical loss of the relay. In addition, the integral structure formed by injection molding means that each static contact 141 is no longer fixed in isolation at a certain point on the mounting base 150, but is instead embedded in the plastic material over a large area and formed into a whole. When the relay is operating, the impact force generated by the closing of the movable contact 131 and the stationary contact 141, as well as the forces generated by vibration or external impact during long-term operation, are effectively dispersed throughout the mounting base 150, rather than being concentrated on a single, fragile connection point. This effectively prevents the stationary contact 141 from shifting or loosening over time, ensuring the stable operation of the relay and further guaranteeing the precise fit of the stationary contact 141 with the movable contact 131. Furthermore, since the stationary contact 141 is pre-assembled on the mounting base 150, subsequent assembly only requires the movable contact 131, simplifying the assembly process and time consumption, thereby 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 opened with the static contacts 141 on both sides of its movement direction.

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

[0174] In at least one embodiment, at least one switch forms the 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 static contact 141 , and the shared static contact 141 forms a common static 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 static contact 143, a single static contact 141 is used to simultaneously serve two independent switch circuits. This reduces the total number of required parts, reduces the installation process and time consumption, and improves space utilization, making the internal structure of the relay more compact. It is possible to implement more complex circuit functions such as two-way parallel or series connection without significantly increasing the overall volume of the relay. Furthermore, by injection molding the same static contact 141 and the mounting base 150 as one, precise positioning of the two switches is achieved, further improving the overall matching accuracy of the relay contact part 100.

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

[0177] Since the common static contact 143 is respectively provided with static contact parts 144 with opposite closing directions corresponding to 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 during movement, which is conducive to further miniaturization of the relay.

[0178] In at least one embodiment, all the moving contacts 131 are linked to each other so that the contact portion 100 has at least three contact states, the common moving contact 137 and the common static contact 143 in the first switch group 111 are closed and the dynamic contact 131 and the common static contact 143 in the second switch group 112 are disconnected as a first contact state, the common moving contact 137 in the first switch group 111 and the static contact 141 located on the other side of the common moving contact 137 relative to the common static contact 143 are closed and the dynamic contact 131 and the common static contact 143 in the second switch group 112 are closed as a second contact state, and each switch in the first switch group 111 and the second switch group 112 are disconnected as a third contact state.

[0179] Since the closed states of the common moving contact 137 and different static contacts 141 in the first switch group 111 in the second switch group 112 respectively correspond to the closed state and the open state of each switch in the second switch group 112, that is, when the common moving contact 137 and the static contact 141 on one side are closed, it can correspond to the closing of each switch in the second switch group 112, and when the common moving contact 137 and the static contact 141 on the other side are closed, it corresponds to the open state of each switch in the second switch group 112. Through the correspondence between the switch states, selective switching of series circuits and parallel circuits can be realized inside the relay, providing the necessary hardware foundation for realizing 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 static contact 143 and the mounting seat 150 are integrally formed by injection molding.

[0181] Since at least a portion of the common static contact 143 is integrally formed with the mounting base 150 by injection molding, this means that the common static contact 143 may not be completely embedded in the mounting base 150, and the contact portion of the common static contact 143 can be largely exposed from the mounting base 150. At the same time, the overall volume of the mounting base 150 can also be reduced, which is beneficial to the miniaturization of the relay in the Y-axis direction and improves the utilization rate of the internal space of the relay.

[0182] In at least one embodiment, the common static contact 143 is an integrated 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 connecting the first and second contact portions 146; the common static contact 143 is at least injection-molded as one piece with the connecting portion 147 and the mounting base 150; the first contact portion 145 and the second contact portion 146 are provided with a static contact 142 for cooperating with the moving contact 132 on the moving contact 131.

[0183] Designing the common static contact 143 as an integrated structure comprising a first contact portion 145, a second contact portion 146, and a connecting portion 147 reduces the number of parts, optimizes the structure, and improves the relative positional accuracy between the first contact portion 145 and the second contact portion 146. By integrally molding at least a portion of the connecting portion 147 with the mounting base 150, a stable mounting base is provided for the entire common static contact 143, improving the positioning accuracy of the common static 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 static contact 143 are arranged in sequence 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] Since the first switch group 111 and the second switch group 112 are staggered in the first direction, and the various parts of the common static contact 143 are staggered in the first and second directions, and the connecting part 147 extends in the second direction, an efficient layout of the common static contact 143 is achieved in the compact internal space of the relay, which is conducive to the miniaturization of the overall relay.

[0186] In at least one embodiment, the first contact portion 145 and the second contact portion 146 are staggered in the third direction, and static contacts 142 are provided on the sides facing each other; the connecting portion 147 extends in the third direction; and the third direction is perpendicular to both the first direction and the second direction.

[0187] Since the space in the third direction is utilized to arrange the first contact portion 145, the connecting portion 147 and the second contact portion 146, the conventional planar layout is converted into a three-dimensional layout, thereby realizing effective utilization of the internal space of the relay in the third direction, which is conducive to further realizing complex functions without increasing the floor space and contributing to the miniaturization of 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 the third direction; and the connecting portion 147 is perpendicular to the 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, the common static contact 143 as a whole is a component with a relatively small thickness. This shape restriction ensures that the common static contact 143 has a high current-carrying area while significantly reducing the space occupied by the common static contact 143. Furthermore, the extension directions of the first contact portion 145, the second contact portion 146, and the connecting portion 147 on the common static contact 143 are restricted. The extension of the connecting portion 147 perpendicular to the first direction fully utilizes the space in the third direction. At the same time, the extension of the first contact portion 145 and the second contact portion 146 perpendicular to the third direction ensures good contact and cooperation 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 the first direction; and the connecting portion 147 of the common static contact 143 is at least partially injection-molded integrally with the partition wall 153 .

[0191] The presence of a partition wall 153 between the first and second switch groups 111, 112 on mounting base 150 increases the creepage distance between the two switch groups, effectively preventing the risk of short circuits due to arcing or electrical breakdown. This also allows the first and second switch groups 111, 112 to be placed as close together as possible, achieving a compact layout and saving space. Furthermore, the connection portion 147 of the common static contact 143 is integrally injection-molded with the partition wall 153, providing solid mechanical support and precise positioning for the common static contact 143. Furthermore, by utilizing the existing partition wall 153, the common static contact 143 is securely mounted while occupying further space within the relay, further enhancing the compactness of the relay's overall structure.

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

[0193] Since the first contact portion 145 of the common static contact 143 extends from the partition wall 153, and the second contact portion 146 is injection-molded as one piece with the mounting seat 150, most of the common static contact 143 is fixed on the mounting seat 150, thereby significantly improving the installation stability and anti-interference ability of the common static contact 143, and the common static contact 143 is less likely to be displaced or shaken due to external force; 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 seat 150 can be reliably formed.

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

[0195] Since the terminal 161 of each static contact 141 in the first switch group 111 and the second switch group 112 for external connection is led out in the same direction, the need for multi-directional bending of each static contact 141 is avoided, copper loss is reduced, and it is beneficial for each static contact 141 to lead out the terminal 161 with a larger wide surface. In the scheme with a terminal, the connection strength and connection area with the terminal can be increased, especially the welding area during welding, thereby facilitating the electrical connection of the relay with the external circuit, reducing the difficulty of designing and manufacturing the external circuit, and thus expanding the use scenarios of the relay.

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

[0197] The cylindrical design of the static contact 141, with one end exposed as the terminal 161, integrates the contact and wiring functions. This reduces the number of parts and intermediate connections, simplifies the structure, and reduces the contact resistance and risk of failure caused by additional welding or connections. The cylindrical structure of the static contact 141 also provides high mechanical strength, ensuring stability during injection molding and use, and providing sufficient strength to withstand impact from the dynamic contact 131.

[0198] In at least one embodiment, the second switch group 112 further includes a static contact 148 that is injection molded integrally with the mounting base 150 , one end of the static contact 148 is connected to the second contact portion 146 of the common static contact member 143 , and the other end is exposed from the mounting base 150 and forms a terminal 161 .

[0199] Since the static contact 148 is provided, the common static contact 143 does not need to be provided with a structure for leading out the terminal 161. Therefore, the molding process of the common static contact 143 is simpler, and it is also easier to be injection molded into one piece with the mounting base 150. By leading out the terminal 161 through the independent static contact 148, it can be ensured that the electrical connection from the common moving contact to the external wiring is 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 suitable for moving relative to the fixed end 138 of the movable contact to close or disconnect with the corresponding static contact 141.

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

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

[0203] Because the mounting base 150 includes a base 151 and a connector 152, which are integrally molded together, and the fixed end 138 of the movable contact 131 is fixedly connected to the metal connector 152, deformation or damage to the base 151 that might result from directly connecting the movable contact 131 to the plastic base 151 is avoided, thereby improving the reliability and lifespan of the relay. At the same time, the movable contact 131, which has greater rigidity and a greater current-carrying cross-section, can be securely mounted, effectively increasing the relay's current-carrying capacity. Furthermore, the static contact 141 is integrally molded with the mounting base 150, and the connector 152 is also integrally molded with the mounting base 150. In subsequent assembly steps, the movable 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. In addition, since the connector 152 is injection molded on the base 151 and the movable contact 131 is connected to the base 151 via the connector 152 , the installation accuracy of the movable contact 131 is improved due to the high-precision assembly of the connector 152 , further improving the overall matching accuracy of the relay contact portion 100 .

[0204] In at least one embodiment, the movable contact 131 and the connecting member 152 are riveted, welded, screwed, or connected via fasteners.

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

[0206] In at least one embodiment, the connecting member 152 defines an extension direction, along which one end of the connecting member 152 or a portion of the connecting member 152 is exposed from the base 151 to form a riveted end 156 ; the movable contact 131 is riveted to the riveted end 156 along the extension direction.

[0207] Since one end of the connecting member 152 extends out of the base body 151 to form a connecting end and is used to be riveted to the moving contact member 131, the connection operation area can be exposed outside the base body 151, which facilitates the approach and operation of the riveting equipment, thereby simplifying the assembly process and improving production efficiency.

[0208] In at least one embodiment, the connecting member 152 defines an extension direction, and along the extension direction, one end of the connecting member 152 forms a connection terminal 161 for external connection.

[0209] Since the connector 152 itself is provided with a connection hole 154 for external connection, external wiring can be conveniently connected. At the same time, when the connector 152 is connected to the moving contact 131, it also assumes the function of electrical conduction, combining the mechanical fixation and electrical lead-out functions in one component, reducing the number of parts, simplifying the internal conductive path, and improving the integration of the product.

[0210] In at least one embodiment, the connecting member 152 is provided with a connecting hole 154 for external connection at one end along the extension direction; the connecting member 152 is provided with a protrusion 155 that is perpendicular to the extension direction and protrudes outward, and the protrusion 155 is at least partially embedded in the base body 151, and the protrusion 155 forms a riveted end 156 at one end of the extension direction and a supporting end 157 at the other end of the extension direction; the supporting end 157 is exposed from the base body 151.

[0211] Since the connecting member 152 is provided with a protrusion 155 perpendicular to its extension direction and embedded in the base body 151, and a holding end 157 exposed from the base body 151 is formed at the other end, the connection between the connecting member 152 and the base body 151 is tighter, which can effectively prevent it from being displaced or rotated relative to the base body 151; and when the dynamic contact 131 is riveted, the applied impact force can be directly transmitted to the external supporting fixture through the holding end 157, avoiding damage or deformation of the plastic base body 151 due to direct force, thereby improving the assembly accuracy, and can also avoid the main body of the connecting member 152 from being deformed due to pressure deformation during riveting, resulting in deformation of the shape of the connecting hole 154, ensuring that the shape of the connecting hole 154 is complete and can be reliably connected to the outside.

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

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

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

[0215] Since at least part of the static contacts 141 in the first switch group 111 are embedded in a portion of the surface of the mounting seat 150 and is provided with patterns 162, these patterns 162 form a microscopic mechanical interlock with the molten plastic during the injection molding process, greatly increasing the friction and bonding area between the two, and can effectively prevent the static contacts 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 where the connecting member 152 is embedded in the seat 151 is provided with a pattern 162 to increase the contact area with the seat 151 and prevent the connecting member 152 from rotating relative to the mounting seat 150 .

[0217] Since the surface of the connecting piece 152 embedded in the seat body 151 is provided with a pattern 162, the principle of mechanical interlocking is also utilized to enhance the bonding strength between the metal connecting piece 152 and the plastic seat body 151, thereby ensuring the long-term stability of the position of the connecting piece 152 itself as the installation reference of the moving contact 131, thereby ensuring the accuracy of the movement of the moving contact 131.

[0218] The present invention further provides a relay, comprising the contact portion 100 as described in any one of the above items.

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

[0220] In at least one embodiment, it also includes: a pushing part 200, which is connected to the moving contact 131 of each switch in the contact part 100 to push each moving contact 131 and the corresponding static contact 141 to close or disconnect; and a driving part 300, whose output end is connected to the pushing part 200 for driving the pushing part 200.

[0221] Since the relay also includes a shell, and the terminal blocks 161 leading out of all the moving contacts 131 and the static contacts 141 are located on the same surface of the shell, this unified and regular layout of the terminal blocks 161 not only facilitates the layout of the moving contacts 131 and the static contacts 141 inside the relay, but also facilitates the electrical connection of the relay with the external circuit, thereby broadening the scope of use of the relay.

[0222] In at least one embodiment, the invention further includes a shell fixedly connected to the mounting base 150 ; the contact portion 100 , the pushing portion 200 and the driving portion 300 are mounted in the shell.

[0223] Since the relay also includes a shell, and the terminal blocks 161 leading out of all the moving contacts 131 and the static contacts 141 are located on the same surface of the shell, this unified and regular layout of the terminal blocks 161 not only facilitates the layout of the moving contacts 131 and the static contacts 141 inside the relay, but also facilitates the electrical connection of the relay with the external circuit, thereby broadening the scope of use of the relay.

[0224] The above description and embodiments are intended to explain the scope of protection of the present invention, but do not constitute a limitation thereto. Modifications, equivalent substitutions, or other improvements to the embodiments of the present invention or portions thereof that can be obtained by a person of ordinary skill in the art through logical analysis, reasoning, or limited experimentation based on the teachings of the present invention or the above embodiments, combined with common knowledge, ordinary technical knowledge in the field, and / or prior art, should all be included within the scope of protection of the present invention.

Claims

1. A contact part for a relay, characterized in that: include: Mounting seat; at least two switches, each comprising a moving contact and a stationary contact; Wherein, at least two switches cooperate to form a first switch group; The switches in the first switch group share a common moving contact and the shared moving contact forms a common moving contact. The static contacts of each switch are respectively located on both sides of the common moving contact along the movement direction of the common moving contact and are injection molded as one piece with the mounting seat.

2. A contact portion according to claim 1, characterized in that: In the first switch group, the common moving contact is suitable for closing or opening with the static contacts on both sides of its movement direction respectively.

3. A contact portion according to 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 static contact, and the shared static contact forms a common static contact.

4. A contact portion according to claim 3, characterized in that: The common static contact has static contact parts corresponding to the two switches it belongs to. The static contact parts are provided with static contacts for cooperating with the moving contacts on the dynamic contact parts. The closing directions of the switches corresponding to the two static contact parts are opposite.

5. A contact portion according to claim 3, characterized in that: All the moving contacts are linked to each other so that the contact part has at least three contact states, the common moving contact and the common static contact in the first switch group are closed and the moving contact and the common static contact in the second switch group are disconnected to form a first contact state, the common moving contact in the first switch group is closed to the static contact located on the other side of the common moving contact relative to the common static contact and the moving contact and the common static contact in the second switch group are closed to form a second contact state, and all switches in the first switch group and the second switch group are disconnected to form a third contact state.

6. A contact portion according to claim 3, characterized in that: At least a portion of the common static contact and the mounting seat are integrally formed by injection molding.

7. A contact portion according to claim 6, characterized in that: The common static contact is an integrated 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 static contact is injection-molded integrally with the mounting seat at least with the connecting portion; the first contact portion and the second contact portion are provided with static contacts for cooperating with the moving contacts on the moving contact.

8. A contact portion according to claim 7, characterized in that: The first switch group and the second switch group are arranged in the first direction; the first contact portion, the connecting portion, and the second contact portion of the common static contact are arranged in sequence along the first direction, the connecting portion extends in the 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 according to claim 8, characterized in that: The first contact portion and the second contact portion are staggered in the third direction, and the static contact is provided on the sides facing each other; the connecting portion extends in the third direction; and the third direction is perpendicular to both the first direction and the second direction.

10. A contact portion according to 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; and the connecting portion is perpendicular to the first direction.

11. A contact portion according to claim 9 or 10, characterized in that: The mounting seat is provided with a partition wall; the partition wall is located between the first switch group and the second switch group along the first direction; and the connecting portion of the common static contact is at least partially injection-molded as one piece with the partition wall.

12. A contact portion according to claim 11, characterized in that: The two static contacts corresponding to the two switches in the first switch group are arranged on both sides of the moving contact along the third direction, wherein one static contact is the common static contact, the first contact portion of the common static contact extends from the partition wall and corresponds to the common moving contact, and the other static contact is injection-molded as one piece with the mounting base; the static contact corresponding to one switch in the second switch group is the common static contact, the second contact portion of the common static contact extends from the partition wall and corresponds to the moving contact of the switch, and is injection-molded as one piece with the mounting base.

13. A contact portion according to claim 3, characterized in that: The connection terminals of the static contacts in the first switch group and the second switch group for external connection are led out to the mounting seat in the same direction and exposed on the outer surface of the relay.

14. A contact portion according to claim 13, characterized in that: At least one static contact in the first switch group, except for the common static contact, which is injection-molded as one piece with the mounting base, is columnar, and one end of the static contact along its extension direction is exposed from the mounting base and forms the wiring terminal, while the other end is exposed from the mounting base and is provided with a static contact for cooperating with the moving contact on the common moving contact.

15. A contact portion according to claim 13, characterized in that: The second switch group further includes a static contact that is injection-molded as one piece with the mounting base. One end of the static contact is connected to the second contact portion of the common static contact, and the other end is exposed from the mounting base and forms the wiring terminal.

16. A contact portion according to claim 1, characterized in that: Each of the movable contacts includes a fixed end fixed relative to the mounting seat and a movable end movable relative to the mounting seat; the fixed end is fixedly connected to the mounting seat; the movable end is suitable for moving relative to the fixed end of the movable contact to close or open with the corresponding static contact.

17. A contact portion according to claim 16, characterized in that: The mounting seat includes a seat body and a connecting piece which are integrally formed by injection molding; the seat body and each of the static contacts are integrally formed by injection molding, and the fixed end of the dynamic contact is fixedly connected to the connecting piece.

18. A contact portion according to claim 17, characterized in that: The movable contact and the connecting member are riveted, welded, screwed or connected via fasteners.

19. A contact portion according to claim 17, characterized in that: The connecting member defines an extension direction, along which one end of the connecting member or a portion of the connecting member is exposed from the base to form a riveted end; the movable contact is riveted to the riveted end along the extension direction.

20. A contact portion according to claim 17, characterized in that: The connecting member defines an extension direction, and along the extension direction, one end of the connecting member forms a connection terminal for external connection.

21. A contact portion according to claim 19, characterized in that: The connecting member is provided with a connecting hole for external connection at one end along the extension direction; the connecting member is provided with a protrusion perpendicular to the extension direction and protruding outward, the protrusion is at least partially embedded in the base body, and the protrusion forms the riveted end at one end of the extension direction and forms a supporting end at the other end of the extension direction; the supporting end is exposed from the base body.

22. A contact portion according to claim 21, characterized in that: The base body is provided with a supporting hole along the extending direction for exposing the supporting end from the base body.

23. A contact portion according to claim 1, characterized in that: At least a portion of the surface of the portion where at least part of the static contacts in the first switch assembly are embedded in the mounting seat is provided with a pattern to increase the contact area with the mounting seat and prevent the static contacts from rotating relative to the mounting seat.

24. A contact portion according to claim 17, characterized in that: At least a portion of the surface of the portion where at least a portion of the connecting member is embedded in the seat body is provided with a pattern to increase the contact area with the seat body and prevent the connecting member from rotating relative to the mounting seat.

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

26. A relay as claimed in claim 25, characterized in that include: a pushing portion connected to the movable contact of each switch in the contact portion to push each movable contact to close or open with the corresponding static contact; and The driving part has an output end connected to the pushing part for driving the pushing part.

27. A relay as claimed in claim 26, characterized in that: It also includes a shell fixedly connected to the mounting seat; the contact part, the pushing part and the driving part are installed in the shell.

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