Contact part and relay

Abstract

The invention discloses a contact part and a relay, the contact part comprises at least one switch module, the switch module comprises at least two moving contacts arranged along a first direction and at least two static contacts respectively corresponding to the moving contacts; in the switch module, each movable contact piece is provided with a fixed end and a movable end which are distributed along a second direction, the fixed end is fixed relative to the static contact piece corresponding to the movable contact piece, and the movable end is suitable for directly moving or swinging in a third direction relative to the fixed end of the movable contact piece so as to be connected or disconnected with the corresponding static contact piece; wherein the movable ends of at least two adjacent movable contacts in the first direction face opposite directions along the second direction; the second direction is perpendicular to the first direction or forms an included angle with the first direction, and the third direction is perpendicular to the first direction and the second direction. By adopting the technical scheme, the problem of large occupied space of the contact part of the traditional relay can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of relays, 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] Among them, the contact part of a traditional relay generally only includes one switch, which is composed of a moving contact and a static contact, and the two cooperate to realize the closing and opening of the corresponding path of the switch. In some cases, the contact part of the relay needs to have multiple switches, such as a single-pole double-throw structure, a double-pole double-throw structure, etc. Under this requirement, the multiple switches in the contact part of the relay are generally installed in the relay in a side-by-side manner. At this time, the various moving contacts are arranged side by side in one direction, and the corresponding static contacts are also arranged side by side in the same direction. These switches are then pushed to close and open by a pushing part connected to the moving contacts in these switches. However, this side-by-side arrangement structure will take up a large space, which is not conducive to the miniaturization of the relay, and limits the application of the relay in a small installation environment, resulting in a limited application range of the relay. 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 to provide a contact part and a relay, which can improve the problem that the contact part of the traditional relay occupies a large space.

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

[0006] A contact part, which is used for a relay, includes at least one switch module, which includes at least two moving contacts arranged along a first direction, and at least two static contacts corresponding to each moving contact; in the switch module, each moving contact has a fixed end and a movable end distributed along a second direction, the fixed end is fixed relative to the static contact corresponding to the moving contact, and the movable end is suitable for moving straight or swinging in a third direction relative to the fixed end of the moving contact to close or disconnect with the corresponding static contact; wherein, the movable ends of at least two moving contacts adjacent in the first direction are oriented in opposite directions along the second direction; the second direction is perpendicular to the first direction or has an angle with each other, and the third direction is perpendicular to both the first direction and the second direction.

[0007] Because adjacent moving contacts in the switch module are arranged along a first direction, and the active ends of adjacent moving contacts face opposite directions along a second direction, the space occupied by the switch of the switch module is reduced, which facilitates miniaturization of the relay and its application in confined environments. Specifically, the active ends of adjacent moving contacts face opposite directions. That is, when two adjacent moving contacts are arranged side by side along the first direction, the active ends of the two moving contacts are not located at the same end in the second direction. Instead, one active end is located at one end of the second direction, and the other active end is located at the other end of the second direction. The advantage of such a layout is that it fully takes into account the structural characteristics and movement characteristics of the dynamic contact. The active end of the dynamic contact needs to have a larger activity space near it because it needs to be driven to move by the pushing component. At the same time, due to the staggered arrangement of the active ends of adjacent dynamic contacts, the active end of each dynamic contact is opposite to the inactive end area of the other adjacent dynamic contact along the first direction. The space of the inactive end area is relatively large, and since there is no need to consider the avoidance problem between the active ends of adjacent dynamic contacts or the corresponding pushing components along the first direction, the adjacent dynamic contacts are arranged side by side more closely, thereby reducing the space occupied by multiple side-by-side switches in the first direction and achieving a more compact structural layout. In addition, the moving contacts and static contacts in the switch module utilize three dimensions of space to reasonably allocate layout space and activity space, wherein the first direction is used to arrange the moving contacts so that each moving contact can obtain a larger current-carrying area without occupying too much space inside the relay; the second direction is used for the extension of the moving contacts so that the terminal ends of the static contacts and the moving contacts in each switch can have sufficient distance in space to avoid problems such as electrical insulation failure, local overheating, and accelerated aging of plastic parts; the movable space of the moving contacts in the third direction is large, which can better meet the contact requirements of large contact gaps.

[0008] In at least one embodiment, the switch module has at least one first switch group consisting of two switches, and the switch includes the moving contact and the static contact; the switches in the first switch group share the moving contact and the shared moving contacts form a common moving contact, and the static contacts of each switch are respectively located on both sides of the common moving contact along the third direction.

[0009] Because the first switch group in the switch module forms at least two switches through a common moving contact, the number of independent moving contacts required to achieve the double-throw function is directly reduced. The reduction in the number of moving contacts not only simplifies the overall mechanical structure inside the switch and reduces the coordination relationship between components, thereby improving the integration and operational reliability of the mechanical system, but also because the driving part or driving part of the relay only needs to control a common moving contact to reciprocate in a third direction to complete the selective connection of the two static contacts, compared to driving two independent moving contacts in the same direction or along other more complex motion trajectories, the design complexity of the driving part and the required installation space are significantly reduced. In particular, the space utilization efficiency in the direction of movement of the moving contact is optimized, making the structural layout of the entire switch more compact. At the same time, through the coordination of the second switch group with other switches, more complex electrical path switching can be achieved, such as realizing functions such as one series and two parallel, which broadens the application range of the relay.

[0010] 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.

[0011] Because the first switch group utilizes a common moving contact, it can achieve three independent circuit states: forming a closed circuit with one of the stationary contacts on either side of its path of action, or maintaining a predetermined electrical gap with both stationary contacts, thereby maintaining an open state. In addition to the traditional closed state of switching between two stationary contacts, 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 pre-charging of new energy vehicles, significantly broadening its application range.

[0012] In at least one embodiment, the switch module has at least one second switch group consisting of one switch, the moving contact in the second switch group is adjacent to the common moving contact in the first switch group along the first direction, and the moving ends of the two are facing opposite directions along the second direction, and the static contact in the second switch group is electrically connected to at least one of the static contacts in the first switch group.

[0013] Since the moving contact in the second switch group and the common moving contact in the first switch group are arranged adjacent to each other in the first direction and the active ends of the two are facing oppositely in the second direction, and the static contact in the second switch group and the static contact of a switch in the first switch group are internally electrically connected, an integrated design of the internal electrical path and switch layout of the relay is realized. Without significantly increasing the overall mechanical complexity of the switch or the number of external wiring, more complex switching logic combinations can be achieved, such as the ability to flexibly construct specific forms of series circuits, parallel circuits or selective switching circuits, providing the necessary hardware foundation for realizing specific applications such as intelligent switching of series and parallel states of battery packs.

[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, in the switch module, in the first switch group and the second switch group adjacent to the moving contacts, the two static contacts with an electrical connection relationship are an integrated structure and constitute a common static contact; 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 dynamic contacts.

[0017] Because at least one switch in the first switch group shares a common static contact with a switch in the second switch group, a single static contact serves two independent switching circuits simultaneously. This reduces the number of required parts and improves space utilization, making the relay's internal structure more compact. This allows for more complex circuit functions, such as dual-circuit parallel or series connections, without significantly increasing the relay's overall size. Furthermore, the integrated common static contact eliminates the additional assembly steps previously required to connect the two static contacts, while ensuring the relative positional accuracy between the two static contacts and effectively improving the common static contact's current-carrying capacity.

[0018] In at least one embodiment, the closing directions of the switches corresponding to the two static contact portions of the common static contact are opposite.

[0019] Since the common static contact is respectively provided with static contact parts with opposite closing directions corresponding to the two switches to which it belongs, a basis is provided for the series-parallel control of the first switch group and the second switch group, so that the common moving contact and the moving contacts in the second switch group move in the same direction, that is, one of the two can be connected with the common static contact. The common moving contact and the moving contacts in the second switch group can move in the same direction, which is conducive to simplifying the structural design of the required driving part and further conducive to the miniaturization design of the relay.

[0020] In at least one embodiment, the two static contact parts of the common static contact are respectively a first contact part and a second contact part, and the first contact part and the second contact part are connected by a connecting part; the first contact part, the connecting part, and the second contact part are arranged in sequence along the first direction, and the first contact part and the second contact part are staggered in the second direction, and the connecting part extends in the second direction; the second direction is perpendicular to the first direction.

[0021] Since the first contact portion and the second contact portion of the common static contact are connected by the connecting portion, and the three have a specific relative position relationship and extension direction, the space inside the relay in the first direction and the second direction can be effectively utilized, which is conducive to the miniaturization of the relay and improving the utilization rate of the internal space of the 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 sides facing each other; and the connecting portion extends in the third 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, a mounting base is further included; the fixed ends of each of the static contacts and each of the dynamic contacts are fixed to the mounting base; the mounting base is provided with a partition wall; the partition wall is located between the adjacent first switch group and second switch group along the first direction.

[0027] The provision of the mounting base improves the relative positioning accuracy of the static and movable contacts, enhancing the closing efficiency and accuracy of the static and movable contacts. Furthermore, the provision of a 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 due to arcing or electrical breakdown, while also enabling a more compact arrangement of the first and second switch groups along the first direction.

[0028] 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.

[0029] Since the terminal ends of the static contacts 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 the static contacts is avoided, copper loss is reduced, and it is beneficial for the static contacts to lead out the terminal ends with a larger wide surface. In the scheme with connecting terminals, the connection strength and connection area with the connecting terminals 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.

[0030] In at least one embodiment, the other static contact in the first switch group opposite to the common static contact is columnar, one end of the static contact along its extension direction is exposed from the mounting seat and forms the wiring terminal, and the other end is exposed from the mounting seat and is provided with a static contact for cooperating with the moving contact on the moving contact.

[0031] 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, offering strong resistance to impact from the moving contact, ensuring stability during injection molding and use.

[0032] In at least one embodiment, the second switch group further includes a static contact fixed to 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.

[0033] 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.

[0034] In at least one embodiment, the static contact and the static contact in the switch module are integrally injection-molded with the mounting base, and the dynamic contact is fixed to the mounting base via a connector integrally injection-molded with the mounting base.

[0035] Since the static contact and the static contact are both injection molded as one piece with the mounting base, the relative positions of the static contact and the static contact are more accurate, which can ensure the stability of the electrical connection relationship between the static contact and the static contact, and help improve the current-carrying performance of the relay; at the same time, the moving contact is fixed to the mounting base through a connecting piece that is injection molded as one piece with the mounting base. The connecting piece can be injection molded as one piece with the mounting base in advance, and the moving contact can be assembled on the connecting piece later, which effectively improves the assembly complexity of the contact part and reduces the time consumption. Moreover, the connecting piece and the static contact are both injection molded as one piece with the mounting base, and the relative positions are more accurate. After the moving contact is assembled on the connecting piece, the relative position relationship between the moving contact and the static contact is also more accurate. The closed and open states of the switch formed by the moving contact and the static contact are more stable, which improves the matching accuracy between the moving contact and the static contact.

[0036] In at least one embodiment, in the switch module, the length directions of two adjacent movable contacts along the first direction are parallel, and the length direction of the movable contact is defined by the projection of the line connecting its fixed end and movable end on the projection plane perpendicular to the third direction.

[0037] Since the length directions of the two adjacent movable contacts along the first direction are parallel, a more regular layout of the contact parts is formed, which simplifies the design and manufacture of the movable contacts and their related fixing and guiding structures, and also simplifies the pushing structure of the driving part or the pushing part on the movable contacts.

[0038] In at least one embodiment, at least one of the moving contacts is a flexible moving contact, which includes a fixed portion, an action portion and a flexible connection portion; the fixed portion is fixed relative to the static contact corresponding to the moving contact and forms the fixed end of the moving contact, the action portion is suitable for swinging along a third direction relative to the fixed portion of the moving contact and forms the movable end of the moving contact, and the flexible connection portion connects the fixed portion and the action portion and is suitable for bending.

[0039] Because the fixed portion of the flexible moving contact is fixed relative to the static contacts, it is easier to lead out the connection terminals. Furthermore, compared to traditional leaf spring structures, the flexible moving contact can still ensure flexible movement of the actuating portion when the current carrying capacity needs to be increased, without increasing the reaction force of the moving contact. This avoids the need to increase the driving force of the drive part, providing a basis for saving the size of the drive part and reducing energy. Furthermore, the flexible movement of the moving contact also helps reduce its resistance and heat generation in the relay.

[0040] In at least one embodiment, the static contact point of the static contact member of the switch where the flexible dynamic contact member is located is arranged tangentially to the swing trajectory of the action part.

[0041] Because the static contact of the static contact in the switch with flexible moving contacts is set tangentially to the swing trajectory of the action part, it ensures that the moving contact and the static contact can achieve ideal positive contact when in contact, which is conducive to forming a large and uniform effective conductive area, thereby reducing contact resistance and temperature rise, maintaining a low and stable contact resistance, reducing arcing, improving the electrical performance and service life of the contacts, and avoiding failures caused by poor contact.

[0042] In at least one embodiment, the common moving contact is a flexible moving contact, and two ends of the flexible connection portion of the common moving contact are located at different positions along the third direction.

[0043] Since the common moving contact is a flexible moving contact, the action part of the common moving contact can easily switch its position between the static contacts on both sides. Since the two ends of the flexible connection part are located at different positions along the third direction, the flexible connection part suitable for bending can be used to lift the position of the action part relative to the fixed part along the action direction, so that the common moving contact can be placed on the static contact on one side of which is at the same position as the fixed part along the third direction, and it is easier to be placed between the static contacts on both sides along its action direction.

[0044] In addition, the present invention also provides a relay, comprising the contact portion as described in any one of the above items.

[0045] Since the relay includes the aforementioned contact portion in its overall structure and is equipped with a pushing portion and a driving portion to collaboratively control the on and off of each switch in the contact portion, the relay has the advantages of compact structure and miniaturization.

[0046] In at least one embodiment, the relay further 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.

[0047] Since the pushing part of the relay includes at least two independent pushing units staggered with each other in the second direction, each pushing unit drives the movable end connected to a moving contact, so that the pushing part adapts to and matches the position difference of the moving contact in the contact part in the second direction, avoiding the uneven force transmission, deformation or interference problems that may be caused by using a single pushing member, thereby ensuring the accuracy and reliability of each switching action.

[0048] In at least one embodiment, the pushing portion includes at least two pushing units staggered in the second direction; each of the pushing units is connected one-to-one to the movable end of each of the dynamic contacts, and is driven by the driving portion to drive the connected movable end to move in the third direction.

[0049] Since the driving part of the relay is correspondingly provided with at least two driving output terminals that are also staggered in the second direction, these driving output terminals are connected and driven one-to-one with each staggered pushing unit in the pushing part, which can ensure that the driving force or motion can be accurately and effectively transmitted from the driving source to each independent pushing unit through the shortest and most direct path, thereby improving the response speed, positioning accuracy and reliability of the entire driving system.

[0050] In at least one embodiment, the driving portion has at least two driving output ends staggered in the second direction; each of the driving output ends drives each of the pushing units to move in the third direction in a one-to-one correspondence.

[0051] By introducing a drive unit containing a motor and linking the rotating member and the push unit with the rotating member via specific first and second mating portions, the motor's rotational motion is converted into the swinging motion of the push unit. The motor output remains in its stopped position when it stops rotating, giving the relay the ability to self-lock. This means that after switching to a certain state (e.g., contacts closed or open), the motor can maintain that state without continuously supplying power to the motor. This ensures that the push unit can maintain the moving contact in a specific position and reduces the energy consumption required to maintain the position. Compared to traditional linkage mechanisms, the sliding fit between the push unit and the rotating member offers the advantages of smaller footprint, higher motion trajectory accuracy, lower impact force during pushing, and relatively lower requirements for component dimensional accuracy. By providing a rotating member for each of the two push units, the required extension of the rotating member is shorter, force transmission is more uniform, and deformation is less likely to occur compared to using the same rotating member to simultaneously push different push units. Furthermore, the rotating member can be directly supported by the drive output, eliminating the need for additional support to ensure the strength of the rotating member, further facilitating relay miniaturization.

[0052] In at least one embodiment, the driving part includes a motor and a transmission mechanism; the output end of the motor is connected to the transmission mechanism and the driving output end is formed by at least part of the transmission mechanism; the pushing part also includes a rotating part; the rotating part is connected to the driving output end to be driven to rotate around a first axis, and is provided with a first matching part: the pushing unit is provided with a second matching part that is slidably matched with the first matching part perpendicular to the first axis, so as to be driven by the rotating part to move along a third direction.

[0053] Because the specific structures of the first and second mating portions are defined as a sliding groove and a cooperating offset sliding pin, this pin-and-groove mechanism accurately converts the rotational motion of the rotating member into the reciprocating oscillation of the driving unit. This results in a more accurate sliding trajectory, less impact, a more compact connection, and more reliable operation. Furthermore, it is less likely to cause mechanism jamming or shorten the relay life due to scraping. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] 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.

[0055] Figure 1 Schematic diagram of the three-dimensional structure of the relay in Example 1;

[0056] Figure 2Schematic diagram of the internal structure of the relay in Example 1;

[0057] Figure 3 Schematic diagram of the three-dimensional structure of the relay in embodiment 1 from another perspective;

[0058] Figure 4 A schematic diagram of the internal structure of the relay in Example 1 from another perspective;

[0059] Figure 5 Schematic diagram of the X-axis direction of the relay in Example 1;

[0060] Figure 6 Schematic diagram of the Z-axis direction of the relay in Example 1;

[0061] Figure 7 for Figure 6 Schematic diagram of the middle AA section;

[0062] Figure 8 for Figure 6 Schematic diagram of the middle BB section;

[0063] Figure 9 Schematic diagram of the first switch group and the second switch group of the contact part in Example 1;

[0064] Figure 10 Schematic diagram of the common static contact and the static contact of the contact part in the first embodiment;

[0065] Figure 11 This is a schematic diagram of the relay in the first embodiment excluding the driving part in the Z-axis direction;

[0066] Figure 12 This is a partial structural diagram of the relay in Example 1;

[0067] Figure 13 for Figure 12 A cross-sectional view of the structure shown;

[0068] Figure 14 This is a partial structural diagram of the pushing part in Example 1;

[0069] Figure 15 Schematic diagram of the structure of the pusher in Example 1.

[0070] Description of main reference numerals:

[0071] 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;

[0072] 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;

[0073] Driving part 300; driving output end 310. DETAILED DESCRIPTION

[0074] 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.

[0075] Definition of terms

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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".

[0080] In the claims and specification of the present invention, unless otherwise specified, the term "switch module" shall be interpreted as referring to a basic structural unit within the contact portion, comprising at least two movable contacts arranged along a first direction and at least two stationary contacts corresponding to each of these movable contacts. Its core structural feature is that adjacent movable contacts along the first direction have their respective movable ends oriented in opposite directions along a second direction. This specific spatial arrangement achieves efficient utilization of the relay's internal space and a compact overall structure.

[0081] In the claims and description of the present invention, unless otherwise defined, the term "first direction" shall be interpreted as referring to the direction along which multiple switches or moving contacts are arranged side by side in space, corresponding to the Y-axis direction shown in the accompanying drawings.

[0082] In the claims and description of the present invention, unless otherwise specified, the term "second direction" shall be interpreted as: referring to the extension direction of a single moving contact from its fixed end to its movable end, which direction is perpendicular to the first direction or has an angle with it, and when this direction is perpendicular to the first direction, it corresponds to the X-axis direction shown in the accompanying drawings, and when this direction has an angle with the first direction, the angle is not 0.

[0083] In the claims and description of the present invention, unless otherwise specified, the term "third direction" shall be interpreted as: referring to the direction in which the active end of the moving contact performs reciprocating motion (straight motion or swinging) to achieve closing or opening with the static contact, which direction is perpendicular to both the first direction and the second direction, and corresponds to the Z-axis direction shown in the accompanying drawings.

[0084] 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.

[0085] In the claims and specification of the present invention, unless otherwise specified, the term "moving 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 "moving 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 portion that contacts the stationary contact.

[0086] 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.

[0087] In the claims and specification of the present invention, unless otherwise specified, the term "direction of the movable end along the second direction" shall be interpreted as referring to the position of the movable end along the axis of the second direction, with the fixed end of the movable contact as the reference point. For example, if the fixed end of a movable contact is located at one end of the axis of the second direction, and the movable end is located at the other end of the axis, the other end shall be the "direction" of the movable end.

[0088] 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.

[0089] 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.

[0090] 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).

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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).

[0118] 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.

[0119] Example 1

[0120] 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.

[0121] 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.

[0122] 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.

[0123] like Figure 1 and Figure 3 As shown, the contact portion 100 includes a mounting base 150 and at least one switch module, the switch module including at least two movable contacts 131 arranged along a first direction, and at least two static contacts 141 corresponding to each movable contact 131. In the switch module, there is at least one first switch group 111 consisting of two switches, and at least one second switch group 112 consisting of one switch, wherein each switch includes a movable 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 3 In this embodiment, the mounting base 150 serves as a mounting base for the movable contact 131 and the static contact 141 in each switch in the contact portion 100 , and the mounting base 150 is fixedly connected to the housing. The fixing method between the two can be fastener connection, clamping, welding, etc.

[0124] Among them, reference Figure 2 、 Figure 4 and Figure 5 In the switch module, each movable contact 131 has a fixed end 138 and a movable end 139 distributed along the second direction. The fixed end 138 is fixed relative to the corresponding static contact 141 of the movable contact 131, and the movable end 139 is adapted to move linearly or swing relative to the fixed end 138 of the movable contact 131 in a third direction to close or open with the corresponding static contact 141. The movable ends 139 of at least two adjacent movable contacts 131 in the first direction face opposite directions along the second direction. The second direction is perpendicular to the first direction or forms an angle with the first direction, and the third direction is perpendicular to both the first and second directions. In the first embodiment, the second direction is perpendicular to the first direction, and the movable end 139 of the movable contact 131 swings relative to its fixed end 138 in the third direction.

[0125] like Figure 1 and Figure 2As 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.

[0126] 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.

[0127] Each movable contact 131 includes a fixed end 138 fixed relative to the mounting base 150 and a movable end 139 movable relative to the mounting base 150; the fixed end 138 is fixedly connected to the mounting base 150; the movable end 139 is adapted to move relative to the fixed end 138 of the movable contact 131 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 134 of the flexible movable contact 131 is the fixed end 138 of each movable contact 131, and the actuating portion 135 is the movable end 139 of each movable contact 131.

[0128] In this embodiment, the fixed portion 134 of each flexible moving contact 131 extends along the X-axis direction and is therefore perpendicular to the main movement direction of the moving contact 131, namely the Z-axis direction. The actuating portion 135 is adapted to swing relative to the fixed portion 134 along the actuating 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 by welding, or 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. Furthermore, the static contact 142 of the static contact 141 of the switch in which the flexible moving contact 131 is located is arranged tangentially to the swinging trajectory of the actuating portion 135. For example, the surface of the static contact 142 facing the moving contact 132 can be designed to be slightly inclined relative to the plane defined by the X-axis direction-Y-axis direction, and the surface of the moving contact 132 facing the static contact 142 can be designed to be parallel to the plane defined by the X-axis direction-Y-axis direction. When the action part 135 of the flexible dynamic contact 131 swings to make the moving contact 132 and the static contact 142 contact, the action part 135 is slightly inclined relative to the plane defined by the X-axis direction-Y-axis direction due to the overall swinging action of the flexible dynamic contact 131, and the inclination angle is exactly the same as the inclination angle of the contact surface of the static contact 142, so that the moving contact 132 and the static contact 142 can achieve ideal frontal fit when in contact, which is conducive to achieving a larger contact and conductive area, and ensuring the contact performance between the moving contact 132 and the static contact 142.

[0129] In this embodiment, the common movable contact 137, serving as the flexible movable contact 131, has its flexible connection portion 136 located at different ends along the common movable contact 137's direction of motion, particularly along the Z-axis, its primary direction of motion. The end of the flexible connection portion 136 connected to the actuating portion 135 is located along the Z-axis between the stationary contact 141 of the first switch 121 and the stationary contact 141 of the second switch 122. The section of the flexible connection portion 136 connected to the fixed portion 134 is located below the end of the flexible connection portion 136 connected to the actuating portion 135 along the Z-axis. In the disconnected state, the actuating portion 135 extends along the X-axis, meaning that in the disconnected state, the actuating portion 135 extends in the longitudinal direction of the movable contact 131. The actuating portion 135 can be connected to the push portion 200, allowing the movable contact 131 to be driven by the push portion 200 to swing relative to the fixed portion 134. The movable contact point 132 of the movable contact 131 is located on the actuating portion 135.

[0130] Reference Figure 1 and Figure 2 The 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.

[0131] 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.

[0132] Furthermore, the moving contact 131 in the second switch group 112 is adjacent to the common moving contact 137 in the first switch group 111 in the first direction, and the movable ends 139 of the two are facing oppositely in the second direction, and the static contact 141 in the second switch group 112 is electrically connected to at least one static contact 141 in the first switch group 111. Specifically, in the switch module, in the first switch group 111 and the second switch group 112 adjacent to the moving contact 131, the two static contacts 141 having an electrical connection relationship are an integrated structure and constitute a common static contact 143. In the first embodiment, the first switch group 111 and the second switch group 112 share a 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 a static contact 141, and the static contact 141 is a common static contact 143. Refer to Figure 2 、 Figure 4 and Figure 5The 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.

[0133] According to the above description of the switch module, it can be seen that the at least two movable contacts 131 arranged along the first direction included in the switch module belong to at least two different switch groups. The structure of two switch groups and two movable contacts 131 is provided in the first embodiment. In other embodiments, the switch module may include three movable contacts 131 arranged along the first direction, and these three movable contacts 131 all have a fixed end 138 and a movable end 139. The fixed ends 138 of the three movable contacts 131 are arranged in a staggered manner, and the movable ends 139 are also arranged in a staggered manner. In other words, the position of the fixed end 138 of a movable contact 131 along the second direction corresponds to the position of the movable end 139 of an adjacent movable contact 131 along the second direction; and the positions of the static contacts 141 corresponding to the movable ends 139 of the three movable contacts 131 are also staggered. In the first embodiment, in the switch module, the length directions of two adjacent movable contacts 131 along the first direction are parallel. The length direction of the movable contact 131 is defined by the projection of the line connecting the fixed end 138 and the movable end 139 on a projection plane perpendicular to the third direction. The length direction of the movable contact 131 is the direction of the line connecting the fixed end 138 and the movable end 139, which is the X-axis direction in the first embodiment. The parallel length directions of the two adjacent movable contacts 131 indicate that the two movable contacts 131 are arranged in a regular side-by-side arrangement along the Y-axis. Of course, in other embodiments, the length directions of the two adjacent movable contacts 131 may not be parallel. In other words, the two movable contacts 131 may be arranged in a mutually inclined position along the first direction. In this case, the line connecting the fixed end 138 and the movable end 139 of the two movable contacts 131 intersects on a projection plane perpendicular to the third direction. The opposite orientations of the movable ends 139 along the second direction can be considered to be generally opposite in direction, rather than absolutely opposite in the same direction.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] Reference Figure 7 and Figure 8 The connector 152 defines an extension direction. Along the extension direction, one end of the connector 152 or a portion of the connector 152 is exposed from the base 151 to form a riveted end 156. The movable contact 131 is press-riveted to the riveted end 156 along the extension direction. One end of the connector 152 along the extension direction is provided with a connection hole 154 for external connection.

[0145] 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 151. 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 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 connecting hole 154. The connecting 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 connecting 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.

[0146] Further, refer to Figure 9 At 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 connector 152 is embedded in the base 151 is provided with a pattern 162 to increase the contact area with the base 151 and prevent the connector 152 from rotating relative to the mounting base 150. In order to ensure a stronger connection between the metal prefabricated parts such as the static contact 141, the static contact head 148, and the connector 152 and the plastic mounting base 150, these metal parts are processed with a pattern 162 on the surface of the portion embedded in the plastic. Figure 9 and Figure 10The 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.

[0147] 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.

[0148] 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 staggered in the second direction. Each pushing unit 220 is connected to the movable end of each movable contact 131 and is driven by the driving portion 300 to move the connected movable end in the third direction. The pushing units 220 include 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 units 220 are adapted to be driven in a predetermined direction to push at least one movable contact 131 to close or open with the static contact 141. The pushing units 220 can be driven by the driving portion 300 to move, and the overall movement of the pushing units 220 can be linear or oscillatory. The first elastic member 223 is positioned corresponding to the closing direction of the movable contact 131 and is positioned between the pushing member 226 and the movable contact 131 to provide contact pressure to the movable contact 131 when the movable contact 131 and the static contact 141 are closed.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] 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 12 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.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] Furthermore, in the first embodiment, the two push units 220 corresponding to the first and second switch groups 111 and 112 operate in tandem, ensuring that the movable contacts 131 in the first and second switch groups 111 and 112 have the same motion state. Specifically, both push units 220 are driven by the torque transmitted from the drive unit 300 to the rotating member 210, and the two rotating members 210 are in the same position at the same time. For example, when the rotating member 210 linked to the pushing unit 220 corresponding to the first switch group 111 rotates to the highest position along the Z-axis direction, the common moving contact 137 swings upward to close the first switch 121, and at the same time, the moving contact 131 in the second switch group 112 also swings upward under the action of another rotating member 210 on the pushing unit 220 to disconnect the third switch 123; or, 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 moving contact 137 swings downward to close the second switch 122, and at the same time, the moving contact 131 in the second switch group 112 also swings downward under the action of another rotating member 210 on the pushing unit 220 to close the third switch 123. ; 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, and the first switch 121 and the second switch 122 are disconnected. 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.

[0157] 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.

[0158] 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 .

[0159] 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 4 In 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.

[0160] Based on the above, it can be understood that Figure 7 and Figure 14In 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.

[0161] 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.

[0162] 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.

[0163] 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.

[0164] 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.

[0165] 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.

[0166] Further, refer to Figure 1 and Figure 3 The aforementioned pushing unit 220 is driven by the driving portion 300 to drive the connected movable end 139 to move in the third direction. The driving portion 300 has at least two drive output ends 310 staggered in the second direction; each drive output end 310 drives each pushing unit 220 to move in the third direction. Furthermore, the driving portion 300 includes a motor and a transmission mechanism; the motor output end is connected to the transmission mechanism, and at least a portion of the transmission mechanism forms the drive output end 310.

[0167] Among them, the motor used in the driving part 300 is a motor with a locking function in place; the motor with a locking function in place can be a stepping motor or a DC motor with a built-in brake. When the motor drives the rotating member 210 to move the pushing member 226 to a predetermined closed or open position, even in the power-off state, the motor's own stepping holding torque or mechanical brake can prevent the rotating member 210 from rotating unexpectedly. The transmission mechanism has multiple gears that mesh with each other, and these gears receive the torque output by the motor and transmit it to the drive output end. The drive output end can be directly formed on the outermost gear of the transmission mechanism, or it can be an independent component and fixed to the outermost gear of the transmission mechanism. The two drive output ends 310 are staggered in the second direction to correspond to the positions of the two pushing units 220 respectively. The two drive output ends and the rotating member can form a rotation-stop fit relative to the first axis, and can be fixed to each other in the Y-axis direction. For example, the drive output end 310 can be a countersunk hole with a anti-rotation fit shape formed on the transmission mechanism. The main shaft 211 of the rotating part 210 can be inserted into the countersunk hole and form a anti-rotation fit relative to the first axis with the drive output end 310. The fixation of the rotating part 210 in the direction of the first axis can be achieved by a conventional retaining spring, etc.

[0168] In the above embodiment, because adjacent movable contacts 131 in the switch module are arranged along the first direction, and the movable ends 139 of adjacent movable contacts 131 face opposite directions along the second direction, the space occupied by the switch of the switch module is reduced, which is conducive to the miniaturization of the relay and its application in confined environments. Specifically, the movable ends 139 of adjacent movable contacts 131 face opposite directions. That is, when two adjacent movable contacts 131 are arranged side by side along the first direction, the movable ends 139 of the two movable contacts 131 are not located at the same end in the second direction. Instead, one movable end 139 is located at one end in the second direction, and the other movable end 139 is located at the other end in the second direction. The advantage of such a layout is that it fully takes into account the structural characteristics and movement characteristics of the moving contact 131. The movable end 139 of the moving contact 131 needs to have a larger activity space near it because it needs to be driven by a pushing component. At the same time, due to the staggered arrangement of the movable ends 139 of adjacent moving contacts 131, the movable end 139 of each moving contact 131 is opposite to the inactive end area of another adjacent moving contact 131 along the first direction. The space of the inactive end area is relatively large, and since there is no need to consider the avoidance problem between adjacent moving contacts 131 or the corresponding pushing components along the first direction, the adjacent moving contacts 131 are arranged side by side more closely, thereby reducing the space occupied by multiple side-by-side switches in the first direction and achieving a more compact structural layout. In addition, the moving contact 131 and the static contact 141 in the switch module utilize three dimensions of space to reasonably allocate layout space and activity space, wherein the first direction is used to arrange the moving contact 131, so that each moving contact 131 can obtain a larger current-carrying area but at the same time will not occupy too much space inside the relay; the second direction is used for the moving contact 131 to extend, so that the terminal 161 of the static contact 141 and the moving contact 131 in each switch can have a sufficient distance in space to avoid electrical insulation failure, local overheating, accelerated aging of plastic parts and other problems; the movable space of the moving contact 131 in the third direction is large, which can better meet the contact requirements of large contact gaps.

[0169] In at least one embodiment, the switch module has at least one first switch group 111 consisting of two switches, and the switches include a moving contact 131 and a static contact 141; the switches in the first switch group 111 share the moving contact 131 and the shared moving contact 131 forms a common moving contact 137, and the static contacts 141 of each switch are respectively located on both sides of the common moving contact 137 along the third direction.

[0170] Because the first switch group 111 in the switch module forms at least two switches via a common movable contact 137, the number of independent movable contacts 131 required to implement the double-throw function is directly reduced. This reduction in the number of movable contacts 131 not only simplifies the overall mechanical structure within the switch and reduces the coordination between components, thereby improving the integration and operational reliability of the mechanical system, but also because the relay's driver 300 or pusher 200 only needs to control the reciprocating motion of a single common movable contact 137 in a third direction to selectively connect the two static contacts 141, the design complexity and installation space required for the driver 300 are significantly reduced compared to driving two independent movable contacts 131 in the same direction or along other more complex motion trajectories. In particular, the space utilization efficiency in the direction of movement of the movable contact 131 is optimized, making the overall switch layout more compact. Furthermore, by coordinating the second switch group 112 with other switches, more complex electrical path switching can be achieved, such as implementing functions such as one series and two parallel connections, broadening the application range of the relay.

[0171] 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.

[0172] Because the first switch group 111 utilizes a common moving contact 137, it can achieve three independent circuit states: forming a closed circuit with one of the stationary contacts 141 located on either side of its path of action, or maintaining a predetermined electrical gap with both stationary contacts 141, thereby maintaining an open state. In addition to the traditional closed state of switching between the two stationary contacts 141, 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 pre-charging of new energy vehicles, significantly broadening the relay's application range.

[0173] In at least one embodiment, the switch module has at least one second switch group 112 consisting of one switch, the moving contact 131 in the second switch group 112 is adjacent to the common moving contact 137 in the first switch group 111 along the first direction and the movable ends 139 of the two are facing oppositely along the second direction, and the static contact 141 in the second switch group 112 is electrically connected to at least one static contact 141 in the first switch group 111.

[0174] Since the moving contact 131 in the second switch group 112 and the common moving contact 137 in the first switch group 111 are arranged adjacent to each other in the first direction and the movable ends 139 of the two are facing oppositely in the second direction, and the static contact 141 in the second switch group 112 and the static contact 141 of a switch in the first switch group 111 are internally electrically connected, the integrated design of the internal electrical path and switch layout of the relay is realized. Without significantly increasing the overall mechanical complexity of the switch or the number of external wiring connections, more complex switch logic combinations can be achieved, such as the ability to flexibly construct specific forms of series circuits, parallel circuits or selective switching circuits, providing the necessary hardware foundation for realizing specific applications such as intelligent switching of series and parallel states of battery packs.

[0175] 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.

[0176] 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.

[0177] In at least one embodiment, in the switch module, in the first switch group 111 and the second switch group 112 adjacent to the moving contact 131, the two static contacts 141 with an electrical connection relationship are an integrated structure and constitute a common static contact 143; the common static contact 143 has a static contact portion 144 corresponding to the two switches to which it belongs, and the static contact portion 144 is provided with a static contact 142 for cooperating with the moving contact 132 on the moving contact 131.

[0178] Because at least one switch in the first switch group 111 and a switch in the second switch group 112 share a common static contact 143, a single static contact 141 simultaneously serves two independent switching circuits. This reduces the number of required parts and improves space utilization, making the relay's internal structure more compact. This allows for more complex circuit functions, such as two-way parallel or series connections, without significantly increasing the relay's overall size. Furthermore, the integrated common static contact 143 eliminates the additional assembly steps previously required to connect the two static contacts 141, while ensuring the relative positional accuracy between the two static contacts 142 and effectively improving the current-carrying capacity of the common static contact 143.

[0179] In at least one embodiment, the closing directions of the switches corresponding to the two static contact portions 144 of the common static contact 143 are opposite.

[0180] 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, a basis is provided for the series and parallel control of the first switch group 111 and the second switch group 112, so that the common moving contact 137 and the moving contact 131 in the second switch group 112 move in the same direction, that is, one of the two can be connected with the common static contact 143, and the common moving contact 137 and the moving contact 131 in the second switch group 112 can move in the same direction, which is conducive to simplifying the structural design of the required driving part 300, and further conducive to the miniaturization design of the relay.

[0181] In at least one embodiment, the two static contact portions 144 of the common static contact 143 are respectively a first contact portion 145 and a second contact portion 146, and the first contact portion 145 and the second contact portion 146 are connected by a connecting portion 147; the first contact portion 145, the connecting portion 147, and the second contact portion 146 are arranged in sequence along the first direction, and the first contact portion 145 and the second contact portion 146 are staggered in the second direction, and the connecting portion 147 extends in the second direction; the second direction is perpendicular to the first direction.

[0182] Since the first contact portion 145 and the second contact portion 146 of the common static contact 143 are connected by the connecting portion 147, and the three have a specific relative position relationship and extension direction, the space inside the relay in the first direction and the second direction can be effectively utilized, which is beneficial to the miniaturization of the relay and improving the utilization rate of the internal space of the relay.

[0183] 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.

[0184] 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.

[0185] 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.

[0186] 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. Furthermore, the extension of the first contact portion 145 and the second contact portion 146 perpendicular to the third direction ensures good contact and fit with the corresponding moving contact 131.

[0187] In at least one embodiment, a mounting base 150 is further included; the fixed ends 138 of each static contact 141 and each dynamic contact 131 are fixed to the mounting base 150; the mounting base 150 is provided with a partition wall 153; the partition wall 153 is located between the adjacent first switch group 111 and the second switch group 112 along the first direction.

[0188] The provision of mounting base 150 improves the relative positioning accuracy of static contact 141 and movable contact 131, thereby enhancing the closing efficiency and accuracy of static contact 141 and movable contact 131. Furthermore, the provision of partition wall 153 on mounting base 150, located between first switch group 111 and second switch group 112, increases the creepage distance between the two switch groups, effectively preventing the risk of short circuits due to arcing or electrical breakdown, while also enabling a more compact arrangement of first switch group 111 and second switch group 112 along the first direction.

[0189] 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.

[0190] Since the terminal 161 for external connection of each static contact 141 in the first switch group 111 and the second switch group 112 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 connecting terminal, the connection strength and connection area with the connecting terminal 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.

[0191] In at least one embodiment, another static contact 141 in the first switch group 111 opposite to the common static contact 143 is cylindrical, and one end of the static contact 141 along its extension direction is exposed from the mounting seat 150 and forms a terminal 161, and the other end is exposed from the mounting seat 150 and is provided with a static contact 142 for cooperating with the moving contact 132 on the moving contact 131.

[0192] The cylindrical design of static contact 141, with one end exposed as terminal 161, 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 cylindrical structure of static contact 141 also offers high mechanical strength, providing strong resistance to impacts from dynamic contact 131 and ensuring stability during injection molding and use.

[0193] In at least one embodiment, the second switch group 112 further includes a static contact 148 fixed to 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 .

[0194] 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 137 to the external wiring is stable and reliable.

[0195] In at least one embodiment, the static contact 141 and the static contact head 148 in the switch module are integrally molded with the mounting base 150 , and the dynamic contact 131 is fixed to the mounting base 150 via a connector 152 integrally molded with the mounting base 150 .

[0196] Since the static contact 141 and the static contact head 148 are integrally molded with the mounting base 150, the relative positions of the static contact 141 and the static contact 148 are more accurate, which can ensure the stability of the electrical connection between the static contact 141 and the static contact 148, and help improve the current carrying performance of the relay; at the same time, the dynamic contact 131 is fixed to the mounting base 150 by the connecting member 152 integrally molded with the mounting base 150, and the connecting member 152 can be pre-molded with the mounting base 150 as a whole, and the dynamic contact 131 is subsequently assembled to the connecting member 15 2, which effectively improves the assembly complexity of the contact part 100 and reduces the time consumption, and the connecting piece 152 and the static contact 141 are both injection-molded as one piece with the mounting base 150, and the relative position is more accurate. After the moving contact 131 is assembled to the connecting piece 152, the relative position relationship between the moving contact 131 and the static contact 141 is also more accurate, and the switch closing and opening states formed by the moving contact 131 and the static contact 141 are more stable, thereby improving the matching accuracy between the moving contact 131 and the static contact 141.

[0197] In at least one embodiment, in the switch module, the length directions of two adjacent movable contacts 131 along the first direction are parallel, and the length direction of the movable contact 131 is defined by the projection of the line connecting its own fixed end 138 and movable end 139 on the projection plane perpendicular to the third direction.

[0198] Since the length directions of the two adjacent dynamic contacts 131 along the first direction are parallel, a more regular layout of the contact portion 100 is formed, which simplifies the design and manufacturing of the dynamic contact 131 and its related fixing and guiding structures, and at the same time simplifies the pushing structure of the driving part 300 or the pushing part 200 on the dynamic contact 131.

[0199] In at least one embodiment, at least one moving contact 131 is a flexible moving contact 131, and the flexible moving contact 131 includes a fixed portion 134, an action portion 135 and a flexible connection portion 136; the fixed portion 134 is fixed relative to the static contact 141 corresponding to the moving contact 131 and forms a fixed end 138 of the moving contact 131, the action portion 135 is suitable for swinging along a third direction relative to the fixed portion 134 of the moving contact 131 and forming a movable end 139 of the moving contact 131, and the flexible connection portion 136 connects the fixed portion 134 and the action portion 135 and is suitable for bending.

[0200] Because the fixed portion 134 of the flexible movable contact 131 is fixed relative to each static contact 141, it is easier to lead out the connection terminals. At the same time, compared to traditional leaf spring structures, the flexible movable contact 131 can still ensure the flexible movement of the actuating portion 135 when the current carrying capacity needs to be increased and the volume needs to be increased, without increasing the reaction force of the movable contact 131. This avoids the need to increase the driving force of the driving part 300, providing a basis for saving the volume of the driving part 300 and reducing energy. At the same time, the flexible movement of the movable contact 131 also helps to reduce the resistance of the movable contact 131, reducing the heat generation of the relay.

[0201] In at least one embodiment, the static contact point 142 of the static contact member 141 of the switch where the flexible dynamic contact member 131 is located is arranged tangentially to the swing trajectory of the action portion 135 .

[0202] Since the switch adopts a flexible moving contact 131, the static contact 142 of the static contact 141 is arranged tangentially to the swing trajectory of the action part 135, ensuring that the moving contact 132 and the static contact 142 can achieve ideal frontal fit when in contact, which is conducive to forming a large and uniform effective conductive area, thereby reducing contact resistance and temperature rise, maintaining a low and stable contact resistance, reducing arcing, improving the electrical performance and service life of the contact 132, and avoiding failures caused by poor contact.

[0203] In at least one embodiment, the common moving contact 137 is a flexible moving contact 131 , and two ends of the flexible connection portion 136 of the common moving contact 137 are located at different positions along the third direction.

[0204] Since the common moving contact 137 is a flexible moving contact 131, the action portion 135 of the common moving contact 137 can easily switch its position between the static contacts 141 on both sides. Since the two ends of the flexible connection portion 136 are located at different positions along the third direction, the flexible connection portion 136 suitable for bending can be used to lift the position of the action portion 135 relative to the fixed portion 134 along the action direction, so that the common moving contact 137 can be placed along the third direction on top of the static contact 141 on one side of which is at the same position as the fixed portion 134, and it is easier to be placed between the static contacts 141 on both sides along its action direction.

[0205] In addition, the present invention further provides a relay, comprising any one of the contact portions 100 described above.

[0206] Since the relay includes the aforementioned contact portion 100 in its overall structure and is equipped with a pushing portion 200 and a driving portion 300 to collaboratively control the on and off of each switch in the contact portion 100, the relay has the advantages of compact structure and miniaturization.

[0207] In at least one embodiment, the relay further 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.

[0208] Since the pushing part 200 of the relay includes at least two independent pushing units 220 staggered in the second direction, each pushing unit 220 drives the movable end 139 connected to a moving contact 131, so that the pushing part 200 adapts to and matches the position difference of the moving contact 131 in the contact part 100 in the second direction, avoiding the uneven force transmission, deformation or interference problems that may be caused by using a single pushing part, thereby ensuring the accuracy and reliability of each switching action.

[0209] In at least one embodiment, the driving portion 300 has at least two driving output ends staggered in the second direction; each driving output end drives each pushing unit 220 to move in the third direction in a one-to-one correspondence.

[0210] By introducing the driving part 300 including the motor, and making the rotating member 210 and the pushing unit 220 linked to the rotating member 210 through a specific first matching portion and a second matching portion, the rotational motion of the motor is converted into the swinging motion of the pushing unit 220. The output end of the motor remains in the stop position when it stops rotating, giving the relay the ability to self-lock, that is, after switching to a certain state (such as contact closure or disconnection), it is not necessary to continuously supply power to the motor to maintain the state, ensuring that the pushing unit 220 can keep the moving contact 131 in a specific position and reduce the energy consumption caused by the need to maintain the position. Compared with the traditional connecting rod mechanism, the sliding matching structure between the pushing unit 220 and the rotating member 210 has the advantages of smaller volume, higher motion trajectory accuracy, smaller impact force when pushing, and relatively lower requirements for part dimensional accuracy. A rotating member 210 is provided for each of the two pushing parts 200. Compared with the case where the same rotating member 210 is used to push different pushing units 220 at the same time, the required extension dimension of the rotating member 210 is shorter, the force transmission is more uniform, and it is not easy to deform. At the same time, the rotating member 210 can be directly supported by the drive output end without the need to set additional support strength to ensure the strength of the rotating member 210, which can further facilitate the miniaturization of the relay.

[0211] In at least one embodiment, the driving part 300 includes a motor and a transmission mechanism; the output end of the motor is connected to the transmission mechanism and the drive output end is formed by at least part of the transmission mechanism; the pushing part 200 also includes a rotating part 210; the rotating part 210 is connected to the drive output end to be driven to rotate around the first axis, and is provided with a first matching part: the pushing unit 220 is provided with a second matching part that is slidably matched with the first matching part perpendicular to the first axis, so as to be driven by the rotating part 210 to move along the third direction.

[0212] Because the specific structures of the first and second mating portions are defined as the sliding groove 227 and the offset sliding pin 212 that cooperates therewith, this pin-and-groove matching mechanism can accurately convert the rotational motion of the rotating member 210 into the reciprocating oscillation of the pushing unit 220. This results in a more accurate sliding trajectory, less impact, a more compact connection, and more reliable operation. Furthermore, it is less likely to cause the mechanism to jam or reduce the life of the relay due to scraping.

[0213] 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: The switch module comprises at least one switch module, wherein the switch module comprises at least two movable contacts arranged along a first direction, and at least two stationary contacts corresponding to each movable contact; In the switch module, each of the moving contacts has a fixed end and a movable end distributed along the second direction, the fixed end is fixed relative to the static contact corresponding to the moving contact, and the movable end is suitable for moving straight or swinging in a third direction relative to the fixed end of the moving contact to close or disconnect with the corresponding static contact; wherein, the movable ends of at least two adjacent moving contacts in the first direction are oriented in opposite directions along the second direction; the second direction is perpendicular to the first direction or has an angle with each other, and the third direction is perpendicular to both the first direction and the second direction.

2. A contact portion according to claim 1, characterized in that: The switch module has at least one first switch group consisting of two switches, and the switch includes the moving contact and the static contact; the switches in the first switch group share the moving contact and the shared moving contacts form a common moving contact, and the static contacts of each switch are respectively located on both sides of the common moving contact along the third direction.

3. A contact portion according to claim 2, 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.

4. A contact portion according to claim 2, characterized in that: The switch module has at least one second switch group consisting of one switch, the moving contact in the second switch group is adjacent to the common moving contact in the first switch group along the first direction, and the movable ends of the two are facing oppositely along the second direction, and the static contact in the second switch group is electrically connected to at least one static contact in the first switch group.

5. A contact portion according to claim 4, 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 4, characterized in that: In the switch module, in the first switch group and the second switch group with adjacent moving contacts, the two static contacts with an electrically connected relationship are an integrated structure and constitute a common static contact; 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 dynamic contacts.

7. A contact portion according to claim 6, characterized in that: The closing directions of the switches corresponding to the two static contact portions of the common static contact are opposite.

8. A contact portion according to claim 6, characterized in that: The two static contact parts of the common static contact are respectively a first contact part and a second contact part, and the first contact part and the second contact part are connected by a connecting part; the first contact part, the connecting part and the second contact part are arranged in sequence along the first direction, and the first contact part and the second contact part are staggered in the second direction, and the connecting part extends 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.

10. A contact portion according to claim 9, 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 4, characterized in that: It also includes a mounting base; the fixed ends of each of the static contacts and each of the dynamic contacts are fixed to the mounting base; the mounting base is provided with a partition wall; the partition wall is located between the adjacent first switch group and second switch group along the first direction.

12. A contact portion according to claim 11, 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.

13. A contact portion according to claim 12, characterized in that: The other static contact in the first switch group opposite to the common static contact is columnar, one end of the static contact along its extension direction is exposed from the mounting seat and forms the wiring terminal, and the other end is exposed from the mounting seat and is provided with a static contact for cooperating with the moving contact on the moving contact.

14. A contact portion according to claim 12, characterized in that: The second switch group further includes a static contact fixed to the mounting base, one end of the static contact is connected to the second contact portion of the common static contact member, and the other end is exposed from the mounting base and forms the wiring terminal.

15. A contact portion according to claim 14, characterized in that: The static contact and the static contact head in the switch module are integrally formed by injection molding with the mounting base, and the dynamic contact is fixed to the mounting base via a connecting piece integrally formed by injection molding with the mounting base.

16. A contact portion according to claim 1, characterized in that: In the switch module, the length directions of two adjacent movable contacts along the first direction are parallel, and the length direction of the movable contact is defined by the projection of the line connecting the fixed end and the movable end of the movable contact on the projection plane perpendicular to the third direction.

17. A contact portion according to claim 2, characterized in that: At least one of the moving contacts is a flexible moving contact, and the flexible moving contact includes a fixed part, an action part and a flexible connection part; the fixed part is fixed relative to the static contact corresponding to the moving contact and forms the fixed end of the moving contact, the action part is suitable for swinging along a third direction relative to the fixed part of the moving contact and forms the movable end of the moving contact, and the flexible connection part connects the fixed part and the action part and is suitable for bending.

18. A contact portion according to claim 17, characterized in that: The static contact point of the static contact member of the switch where the flexible dynamic contact member is located faces the swing track of the action part and is arranged tangentially.

19. A contact portion according to claim 17, characterized in that: The common moving contact is a flexible moving contact, and two ends of a flexible connection portion of the common moving contact are located at different positions along the third direction.

20. A relay, characterized in that: include: A contact portion as claimed in any one of claims 1 to 19.

21. The relay according to claim 20, 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.

22. A relay as claimed in claim 21, characterized in that: The pushing portion includes at least two pushing units staggered in the second direction; each pushing unit is connected to the movable end of each movable contact member in a one-to-one correspondence, and is driven by the driving portion to drive the connected movable end to move in the third direction.

23. A relay as claimed in claim 22, characterized in that: The driving part has at least two driving output ends staggered in the second direction; each of the driving output ends drives each of the pushing units to move in the third direction in a one-to-one correspondence.

24. A relay as claimed in claim 23, characterized in that: The driving part includes a motor and a transmission mechanism; the output end of the motor is connected to the transmission mechanism and a driving output end is formed by at least part of the transmission mechanism; the pushing part also includes a rotating member; the rotating member is connected to the driving output end to be driven to rotate around a first axis, and is provided with a first matching part: the pushing unit is provided with a second matching part that is slidably matched with the first matching part perpendicular to the first axis, so as to be driven by the rotating member to move along a third direction.

25. A relay as claimed in claim 24, characterized in that: One of the first matching portion and the second matching portion is a sliding groove extending in a direction perpendicular to the first axis, and the other is a sliding pin extending into the sliding groove along the first axis, and the sliding pin is offset relative to the first axis.

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