Relay

Abstract

The present disclosure provides a relay, comprising a base, a magnetic circuit part, a contact part, and pushing members. The magnetic circuit part comprises armature assemblies. The contact part comprises movable springs. The pushing members move relative to the base, and the movement comprises at least a component in the Z-axis direction. The armature assemblies and the movable springs are oppositely engaged with the pushing members in the X-axis direction, so that the armature assemblies drive the movable springs to move by means of the pushing members. The relay is divided into at least two units, the magnetic circuit part and the contact part are respectively located in different units, and the units are in mating engagement with each other in the X-axis direction and are fixed relative to each other. By using the technical solution, the size of the relay in the Z-axis direction can be reduced compared with the prior art.

Description

relay

[0001] This disclosure claims priority to four Chinese patent applications filed on November 21, 2024, with application numbers 2024116743972, 2024116743900, 2024116744053 and 2024116744104, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure pertains to the field of relays. Background Technology

[0003] In existing oscillating relays, the magnetic circuit and contact components are often located on the same side of the actuating element. In this case, the coil winding of the coil assembly extends along the Z-axis, while the actuating element extends and moves along the X-axis. The actuating element and coil assembly are arranged along the Z-axis. The moving spring extends along the Z-axis, and the moving contact closes or opens with the stationary contact along the X-axis. With this design, the relay has a relatively high height along the Z-axis. Summary of the Invention

[0004] The purpose of this disclosure is to overcome the aforementioned defects or problems in the prior art and to provide a relay that has a lower height along the Z-axis compared to relays in the prior art.

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] The first technical solution relates to a relay, comprising: a housing including a base; a magnetic circuit portion including an armature assembly; a contact portion including a movable spring; and a pusher member that moves relative to the base, the movement of the pusher member having at least a component along the Z-axis direction; the armature assembly and the movable spring cooperating with each other relative to the pusher member along the X-axis direction, such that the armature assembly drives the movable spring to move via the pusher member, wherein the X-axis direction is perpendicular to the Z-axis direction; the relay is divided into at least two units, the magnetic circuit portion and the contact portion are located in different units, and each unit is inserted and fixed relative to each other along the X-axis direction.

[0007] The second technical solution is based on the first technical solution, wherein the housing further includes a cover, which is disposed on and fixedly connected to the base; the magnetic circuit part further includes a coil assembly, which is fixed relative to the base and adapted to drive the armature assembly to rotate about a rotation axis extending along the Y-axis direction; the armature assembly is provided with a swinging part adapted to cooperate with the pusher; the coil assembly includes a coil frame, wherein the Z-axis direction is perpendicular to the X-axis direction and the Z-axis direction; the contact part further includes a stationary contact and at least two load terminals; the moving spring is provided with a moving contact, which closes or opens with the stationary contact along the Z-axis direction; each load terminal is fixed relative to the base and is respectively connected to the moving spring and the stationary contact; the pusher is mounted on the base and moves along the Z-axis direction.

[0008] The third technical solution is based on the second technical solution, wherein the pusher is provided with a first mating hole suitable for the swinging part to extend into and a second mating hole suitable for the moving spring to extend into, and the direction in which the swinging part extends into the first mating hole is opposite to the direction in which the moving spring extends into the second mating hole.

[0009] The fourth technical solution is based on the second technical solution, wherein the base is provided with a sliding groove, and the pushing member slides in cooperation with the sliding groove along the Z-axis direction.

[0010] The fifth technical solution is based on the third technical solution, wherein the base includes a first base body and a second base body, the magnetic circuit part and the pusher are installed on the first base body and together form a first assembly, the contact part is installed on the second base body and together form a second assembly; after the first assembly and the second assembly are inserted into place, the moving spring extends into the second mating hole along the X-axis direction, the first base body and the second base body are engaged along the X-axis direction, and the first assembly and the second assembly are mutually limited and engaged along the Y-axis direction and the Z-axis direction.

[0011] The sixth technical solution is based on the fifth technical solution. In this solution, the first base body is provided with a first limiting block, a second limiting block, and a first locking block along the X-axis direction toward the second base body. The second base body is provided with a second locking block along the X-axis direction toward the first base body. The first limiting block is located above the second limiting block along the Z-axis direction. After the first assembly and the second assembly are inserted into place along the X-axis direction, the first locking block and the second locking block engage with each other along the X-axis direction. At least one of the load terminals is inserted between the first limiting block and the second limiting block along the X-axis direction and engages with the first limiting block and the second limiting block along the Z-axis direction.

[0012] The seventh technical solution is based on the sixth technical solution, wherein the load terminal is clearance-fitted with the first limiting block and the second limiting block along the Z-axis direction, and the length of the second limiting block fitting with the load terminal along the X-axis direction is less than the length of the first limiting block fitting with the load terminal along the X-axis direction, so that when the second assembly is away from the first assembly along the X-axis direction, the end of the second assembly is allowed to deflect downward relative to the first assembly until the second locking block disengages from the first locking block along the X-axis direction when the first assembly or the second assembly is subjected to a downward force along the Z-axis direction.

[0013] The eighth technical solution is based on the sixth technical solution, wherein the number of the second limiting blocks is at least two, each second limiting block is arranged along the Y-axis direction, at least two adjacent second limiting blocks form a first gap along the Y-axis direction, the second base is provided with an insert block suitable for extending into the first gap along the X-axis direction, after the second assembly and the first assembly are inserted into each other along the X-axis direction, the insert block and the corresponding two second limiting blocks are limited and engaged along the Y-axis direction; the two second limiting blocks forming the first gap between each other are provided with the first locking block on their adjacent side, and the insert block is provided with a second locking block corresponding to the first locking block on both sides along the Y-axis direction.

[0014] The ninth technical solution is based on the fifth technical solution, wherein the pushing member includes a base and two sliding mating parts, the first mating hole and the second mating hole are both formed in the base, the two sliding mating parts are fixed to both sides of the base along the Y-axis direction, and the first seat is provided with a sliding groove that slides with the two sliding mating parts along the Z-axis direction.

[0015] The tenth technical solution is based on the fifth technical solution. The coil assembly includes a coil frame, a coil winding, and coil terminals. The coil winding is wound around the coil frame, and the winding axis of the coil winding extends along the Z-axis. The coil terminals are electrically connected to the coil winding and penetrate downwards through the coil frame and the first base along the Z-axis. The magnetic circuit portion corresponding to the armature assembly also includes two support members. The two support members are fixed relative to the coil assembly and support the armature assembly. The first base has slots for inserting the two support members along the Z-axis. The coil assembly has two magnetic drive ends arranged along the Z-axis. The two magnetic drive ends drive the armature assembly to rotate by changing their polarity. Each magnetic drive end has protrusions on both sides along the Y-axis. Each support member has two connecting holes along the Z-axis that correspond to the two protrusions on the same side along the Y-axis and are inserted into each other. The contact portion also includes at least two load terminals. Each load terminal is fixedly connected to a moving spring and a stationary contact, respectively. Each load terminal penetrates downwards through the second base along the Z-axis and is fixedly connected to the second base.

[0016] The eleventh technical solution is based on the third technical solution, wherein the base, the contact part, and the pushing part together form a third assembly, the magnetic circuit part is inserted into the base along the X-axis direction, after being inserted into place, the swing part extends into the first mating hole along the X-axis direction, and the cover is arranged around the coil frame along the X-axis direction to prevent the magnetic circuit part from detaching from the third assembly along the X-axis direction.

[0017] The twelfth technical solution is based on the third technical solution, wherein the base includes a third seat and a fourth seat, the magnetic circuit part is installed on the third seat and together form a fourth assembly, the pushing member and the contact part are installed on the fourth seat and together form a fifth assembly; after the fourth assembly and the fifth assembly are inserted into place, the swing part extends into the first mating hole along the X-axis direction, the third seat and the fourth seat are engaged along the X-axis direction, and the fourth assembly and the fifth assembly are mutually limited and engaged along the Y-axis direction and the Z-axis direction.

[0018] The thirteenth technical solution is based on the third technical solution, wherein the base includes a fifth seat, a sixth seat, and a seventh seat; the magnetic circuit portion is installed on the fifth seat and together form a sixth assembly; the pushing member is installed on the sixth seat and together form a seventh assembly; and the contact portion is installed on the seventh seat and together form an eighth assembly. The sixth, seventh, and eighth assemblies are inserted along the X-axis direction. After being inserted into place, the moving spring extends into the second mating hole along the X-axis direction, and the swinging portion extends into the first mating hole along the X-axis direction. The fifth seat and the sixth seat are engaged, and the sixth and seventh assemblies are mutually limited in their fit along the Y-axis and Z-axis directions.

[0019] Compared with existing technologies, the above solution has the following beneficial effects:

[0020] In the first technical solution, the armature assembly and the moving spring cooperate with the pusher relative to each other along the X-axis direction. Therefore, the contact part and the magnetic circuit part are located on both sides of the pusher along the X-axis direction. The pusher is no longer arranged with the coil assembly along the Z-axis direction. Therefore, compared with the prior art, the height of the relay along the Z-axis direction is lower.

[0021] In the first technical solution, since the iron assembly and the moving spring cooperate with each other relative to each other along the X-axis direction with the pusher, such a relay reduces the height in the Z-axis direction. In order to reduce the difficulty of assembly, the first technical solution divides the relay into at least two units and places the magnetic circuit part and the contact part in different units. Therefore, the cooperation between the armature assembly and the pusher and the cooperation between the moving spring and the pusher are separated, thereby reducing the difficulty of assembly.

[0022] In the first technical solution, each unit is inserted and fixed relative to the other along the X-axis, which enables the armature assembly or moving spring to cooperate with the pusher when the insertion is completed, thus improving assembly efficiency.

[0023] In the second technical solution, when the cover is fixed to the base, it can prevent each unit from detaching along the X-axis.

[0024] In the third technical solution, the swinging part and the moving spring are respectively inserted into the first mating hole and the second mating hole, thereby realizing the mating and linkage with the pushing part.

[0025] In the fourth technical solution, the sliding engagement between the base groove and the pusher can improve the certainty of the pusher's movement direction and constrain the pusher's degree of freedom in other directions, making the pusher less prone to displacement or deformation when subjected to impacts in uncertain directions, thereby improving the reliability of the relay.

[0026] In the fifth technical solution, the base is divided into a first base and a second base. The first base, together with the magnetic circuit part and the pushing part, forms a first assembly, and the second base, together with the contact part, forms a second assembly. The first assembly and the second assembly are then inserted into each other along the X-axis. During the insertion process, the moving spring assembly is inserted into the second mating hole along the X-axis. This makes the relay easier to assemble and avoids the swinging part and the moving spring assembly from being inserted into the pushing part in opposite directions at the same time.

[0027] In the fifth technical solution, the first assembly and the second assembly are prevented from separating from each other along the X-axis before being fixed to the cover by a snap-fit ​​connection.

[0028] In the sixth technical solution, the first assembly and the second assembly are fixed relative to each other along the Z-axis by the load terminal being limited and engaged with the first and second limiting blocks. Inserting the load terminal between the first and second limiting blocks along the X-axis increases the current-carrying area of ​​the load terminal, which is beneficial for improving load capacity.

[0029] In the seventh technical solution, the load terminal is clearance-fitted with the first and second limiting blocks along the Z-axis, and the length of the fit between the second limiting block and the load terminal along the X-axis is less than the length of the fit between the first limiting block and the load terminal along the X-axis. This facilitates the second assembly's end away from the first assembly along the X-axis to deflect downward relative to the first assembly, causing the second locking block to disengage from the first locking block, thus enabling quick disassembly of the first and second assemblies. Simultaneously, because the length of the fit between the first limiting block and the load terminal along the X-axis is larger, the insertion points of the second and first assemblies are less prone to sinking due to downward impact forces along the Z-axis, preventing these insertion points from becoming weak points after relay assembly.

[0030] In the eighth technical solution, the insert block and the corresponding two second limiting blocks are matched and limited along the Y-axis, so that the first assembly and the second assembly are fixed relative to each other along the Y-axis. The first locking block is located on the side of the second limiting block, and the second locking block is located on the side of the insert block, so that the connection between the first locking block and the second locking block is stronger and less likely to disengage.

[0031] In the ninth technical solution, the housing is provided with a sliding groove that slides with the sliding engagement part of the pusher, which can improve the certainty of the pusher's movement direction, constrain the pusher's degree of freedom in other directions, and make the pusher less prone to displacement or deformation when subjected to impacts in uncertain directions, thereby improving the reliability of the relay.

[0032] In the tenth technical solution, the coil winding extends along the Z-axis, which helps to reduce the projected area of ​​the relay on the projection plane perpendicular to the Z-axis, thus reducing the relay's footprint on the circuit board. The coil terminals extend downward along the Z-axis through the coil frame and the first base, making it easier for the relay to connect to the circuit board.

[0033] In the tenth technical solution, the support member is fixed relative to the coil assembly and is located on both sides of the coil assembly along the Y-axis, effectively supporting the armature assembly and allowing it to rotate relative to the coil assembly. The support member and the slot of the housing are inserted into each other along the Z-axis, completely restricting the freedom of the support member, which is more conducive to supporting the armature assembly. This prevents the rotation axis of the armature assembly from moving along the X-axis, and when the relay is impacted, the heavier armature assembly can transmit the impact force to the support member, which then transmits the force to the housing, making it difficult for the components to undergo relative displacement.

[0034] In the tenth technical solution, the connecting hole on the support member and the protrusion on the magnetic drive end are inserted and fitted along the Y-axis, which enables the support member to be positioned more accurately relative to the yoke. Since the support member is the motion reference of the armature assembly, the engaging part can more accurately engage with the magnetic drive end when the armature assembly rotates relative to the coil assembly.

[0035] In the tenth technical solution, each load terminal penetrates downwards through the second base along the Z-axis direction, making it easier for both the load terminals and coil terminals to connect to the circuit board. By splitting the base into a first base and a second base that insert along the X-axis direction, the engagement of the moving spring and armature assembly with the pusher component is achieved more smoothly, roughly along the X-axis direction.

[0036] In the eleventh technical solution, the magnetic circuit part is inserted and fitted with the base along the X-axis, allowing the swinging part to extend into the first mating hole along the X-axis. When the cover is fixed to the base, the cover surrounds the coil frame along the X-axis, preventing the coil frame from detaching from the third assembly along the X-axis.

[0037] The twelfth and thirteenth technical solutions are other embodiments of this disclosure, which can also avoid the swinging part and the moving spring assembly from being simultaneously inserted into the pusher in opposite directions.

[0038] Furthermore, in existing relays, the armature assembly drives a moving spring via a pusher to close or open the moving contact with the stationary contact. In existing technology, the pusher is generally made of plastic. When the moving spring carries a large current, it easily overheats, causing the pusher to soften or even melt. This results in the moving spring's closing stroke not matching the design, making the relay prone to failure.

[0039] To address the shortcomings of the prior art, this disclosure also provides a relay actuator and a relay, which improves load capacity and reliability compared to the actuators and relays in the prior art.

[0040] To achieve the above objectives, the following technical solution is adopted:

[0041] The first technical solution relates to a pusher, which is driven by the armature assembly of a relay to push a moving spring, wherein the part of the pusher adapted to contact the moving spring is made of metal.

[0042] The second technical solution is based on the first technical solution, wherein the pushing component is made of metal.

[0043] The third technical solution is based on the second technical solution, wherein the pushing component is a stainless steel sheet metal part or cast aluminum.

[0044] The fourth technical solution is based on the first technical solution, wherein the pushing member moves linearly relative to the housing of the relay, the pushing member includes a base and a sliding engagement part, the part of the pushing member that contacts the armature assembly and the moving spring is formed in the base, the base is made of metal, and the sliding engagement part is fixed to both sides of the base and slides in engagement with the sliding groove of the housing.

[0045] The fifth technical solution is based on the fourth technical solution, wherein the substrate is a sheet metal part or a casting, the sliding mating part and the shell are both made of plastic, and the sliding mating part and the substrate insert are integrally injection molded.

[0046] The sixth technical solution is based on any one of the first to fifth technical solutions, wherein the metal material is stainless steel, aluminum, or aluminum alloy.

[0047] The seventh technical solution relates to a relay, which includes a housing, an armature assembly, a moving spring, a stationary contact, and the pusher described above in this disclosure; the armature assembly rotates relative to the housing about a rotation axis extending along the Y-axis direction, the moving spring is provided with a moving contact, the moving contact is closed or opened with the stationary contact along the Z-axis direction, wherein the Y-axis direction and the Z-axis direction are perpendicular to each other.

[0048] The eighth technical solution is based on the seventh technical solution, wherein the armature assembly is provided with a swinging part, and the pusher is provided with a first mating hole for the swinging part to extend into and a second mating hole for the moving spring to extend into along the X-axis direction. The direction in which the swinging part extends into the first mating hole is opposite to the direction in which the moving spring extends into the second mating hole. The X-axis direction is perpendicular to the Y-axis direction and the Z-axis direction is perpendicular to each other.

[0049] The ninth technical solution is based on the eighth technical solution, wherein all positions where the pusher contacts the swinging part are closer to the rotation axis than the second mating hole along the X-axis direction.

[0050] The tenth technical solution is based on the ninth technical solution, wherein the first mating hole is provided with a first abutting part and a second abutting part on both sides along the Z-axis direction, which are suitable for abutting with the swinging part; the first abutting part and the second abutting part are both turned outward from the hole wall of the first mating hole along the X-axis direction; the surfaces of the first abutting part and the second abutting part that are suitable for contacting the swinging part are both smooth curved surfaces.

[0051] The eleventh technical solution is based on the tenth technical solution, wherein the moving contact closes downward with the stationary contact, the first mating hole is located above the second mating hole, and the first abutting part is located above the second abutting part; the portion of the pusher between the first abutting part and the second abutting part bends upward in a direction closer to the rotation axis, the outward turning directions of the first abutting part and the second abutting part are opposite to each other, and the first abutting part turns outward in a direction further away from the rotation axis.

[0052] Compared with existing technologies, the above solution has the following beneficial effects:

[0053] In the first technical solution, the part of the pusher that contacts the moving spring is made of metal. Therefore, when the external current load is large, causing the moving spring to generate a lot of heat, compared to the existing technology where the entire pusher is made of plastic, this solution is more effective in preventing the pusher from softening or even melting due to the heat of the moving spring assembly, which could lead to a mismatch between the closing stroke of the moving spring assembly and the design. Thus, this solution improves the load capacity and reliability of the relay compared to existing technologies.

[0054] In the second technical solution, the entire pushing component is made of metal, which has higher strength and is less susceptible to the heat generated by the moving spring assembly.

[0055] In the third technical solution, the pushing component is a sheet metal part or a casting part, which is easier to process and form.

[0056] In the fourth technical solution, both the portion of the pusher that contacts the moving spring and the portion that contacts the armature assembly are formed in the base material. The base material is made of metal, which also prevents the pusher from softening or even melting due to heat from the moving spring assembly. The sliding fit between the sliding part and the housing improves the certainty of the pusher's movement direction and restricts the pusher's degrees of freedom in other directions. This makes the pusher less prone to displacement or deformation when subjected to impacts from uncertain directions, thus improving the reliability of the relay.

[0057] In the fifth technical solution, the sliding mating part is made of plastic, which makes it easier to slide and fit with the shell, which is also made of plastic, and is less likely to produce scratches that could cause jamming or misalignment. The sliding mating part and the base insert are injection molded as a single piece, resulting in higher dimensional accuracy and smaller dimensional tolerances.

[0058] In the sixth technical solution, stainless steel offers a longer lifespan and higher strength, while aluminum or aluminum alloys offer lower density and lower cost. When the pusher component is made of stainless steel sheet metal, it is easier to process and form, resulting in a simpler structure, higher strength, and better suitability for miniaturization. When the pusher component is made of aluminum or aluminum alloy castings, it is easier to process and form, resulting in lower density, higher strength, and lower cost.

[0059] In the seventh technical solution, the moving contact closing or opening with the stationary contact along the Z-axis means that the pushing member moves along the Z-axis, or the movement of the pushing member has at least a component along the Z-axis.

[0060] In the eighth technical solution, the pusher is provided with a first mating hole for the swinging part to extend into and a second mating hole for the moving spring to extend into along the X-axis direction. The second mating hole for the moving spring to extend into along the X-axis direction can reduce the height of the contact part along the Z-axis direction, which is more conducive to saving space of the relay along the Z-axis direction.

[0061] In the ninth technical solution, all positions where the pusher contacts the swinging part are closer to the rotation axis in the X-axis direction than the second mating hole (i.e., the position where the pusher contacts the moving spring assembly). This is beneficial to reduce the travel of the pusher in the Z-axis direction while ensuring the distance between the moving contact and the stationary contact. In particular, it is beneficial to lower the highest point of the pusher's travel, so that the highest point does not exceed the highest point of the coil assembly. Therefore, it is beneficial to save the height of the relay in the Z-axis direction.

[0062] In the tenth technical solution, the first mating hole is provided with a first abutting part and a second abutting part on both sides along the Z-axis, respectively, suitable for abutting with the swinging part. Both the first abutting part and the second abutting part are turned outward from the hole wall of the first mating hole along the X-axis, allowing the contact point between the swinging part and the pushing member to move along the outward turning direction. This helps reduce chipping between the swinging part and the metal pushing member or substrate. The surfaces of the first abutting part and the second abutting part suitable for contacting the swinging part are both smooth curved surfaces, resulting in a lower coefficient of friction between the pushing member and the swinging part, and a longer lifespan for the swinging part.

[0063] In the tenth technical solution, by setting the first and second abutting parts that are outwardly turned along the X-axis, it is beneficial to make the pushing part thinner and to ensure that it always abuts the swinging part correctly. This is beneficial to the miniaturization of the relay and also to ensure that the swinging part always abuts the second abutting part at its lowest point. This ensures that when the pushing part enters the overtravel after the moving contact and the stationary contact make contact, the overtravel distance along the direction of movement of the pushing part ensures that the moving contact always reliably presses against the stationary contact.

[0064] In the eleventh technical solution, the portion of the pusher that bends between the first and second abutment portions reduces the size of the pusher along the Z-axis, making it more advantageous to achieve the aforementioned function when space is limited in the Z-axis direction. Especially when the swinging portion is offset upwards relative to the main body, the distance between the swinging portion's highest and lowest points along the X-axis increases. The bending of the portion of the pusher between the first and second abutment portions ensures that the swinging portion can correctly abut against both the first and second abutment portions when swinging upwards to its highest and lowest points, allowing the moving contact to correctly close or open with the stationary contact. When the pusher bends between the first and second abutment portions, the outward directions of the first and second abutment portions are opposite to each other, which helps to bring the contact points of the swinging portion and the first and second abutment portions closer along the X-axis, preventing a large reciprocating force on the pusher along the X-axis when the swinging portion drives the pusher.

[0065] Furthermore, in existing technologies, relays are used to control the on / off state of external circuits; generally, one relay in a circuit is equivalent to a controlled switch. With the further development of electronic and electrical applications, two or more switches are often centrally located in a relatively small area. However, due to factors such as relay packaging, to achieve the function of more than two switches, two or more independent relays need to be installed, which requires a significant amount of space.

[0066] To address the shortcomings of the prior art, this disclosure also provides a relay that, compared to the prior art, occupies less space when implementing two or more switching functions.

[0067] To achieve the above objectives, the following technical solution is adopted:

[0068] The first technical solution relates to a relay, which includes a housing; a magnetic circuit portion mounted on the housing and including at least two magnetic circuit units; and a contact portion mounted on the housing and including a moving spring assembly, a stationary contact assembly, and a load terminal; the moving spring assembly and the stationary contact assembly are each corresponding to a magnetic circuit unit, and each moving spring assembly has a moving contact assembly corresponding to the stationary contact assembly; each moving spring assembly and its corresponding stationary contact assembly together form a switch; the moving spring assembly and the stationary contact assembly in each switch are respectively connected to different load terminals, and at least one load terminal is shared by at least two switches to form a common terminal; the moving spring assembly is driven by the corresponding magnetic circuit unit, causing the moving contact assembly to close or open with the corresponding stationary contact assembly.

[0069] The second technical solution is based on the first technical solution and further includes a pushing part. The pushing part includes a pushing member housed in the housing. The pushing member is correspondingly arranged with the magnetic circuit unit. The pushing member is driven by the corresponding magnetic circuit part to drive the corresponding moving spring assembly.

[0070] The third technical solution is based on the first or second technical solution, wherein at least one load terminal is simultaneously connected to at least two stationary contact groups or at least two moving spring groups to form the common terminal; or, at least one load terminal is simultaneously connected to the moving spring group in at least one switch and the stationary contact group in at least one other switch to form the common terminal, wherein the moving spring group defined as the switch is not connected to the common terminal.

[0071] The fourth technical solution is based on the second technical solution. In this solution, each magnetic circuit unit is arranged along the Y-axis. Each magnetic circuit unit includes a coil assembly and an armature assembly. The coil assembly is fixed relative to the housing and includes a coil winding and a coil terminal electrically connected to the coil winding. The winding axis of the coil winding extends along the Z-axis. The armature assembly rotates relative to the coil assembly about a rotation axis extending along the Y-axis. Each coil winding and each armature assembly is housed within the housing. The coil terminal extends downward along the Z-axis. The contact portion and the magnetic circuit portion are arranged along the X-axis. Each switch is housed within the housing. Each load terminal extends downward along the Z-axis. Each pusher is arranged along the Y-axis. The pusher is driven by the corresponding armature assembly to move along the X-axis or Z-axis, thereby causing the corresponding moving contact group to close or open with the corresponding stationary contact group along the direction of the pusher's movement. The X-axis, Y-axis, and Z-axis are mutually perpendicular.

[0072] The fifth technical solution is based on the first, second, or fourth technical solution, wherein each moving spring group includes at least one moving spring, each moving spring is provided with at least one moving contact, all moving contacts in the same moving spring group form a moving contact group, and a stationary contact group corresponding to the moving contact group is provided with stationary contacts corresponding to all moving contacts in the moving contact group.

[0073] The sixth technical solution is based on the fifth technical solution, wherein the moving spring group includes at least two moving springs, each moving spring is provided with a moving contact, the moving springs in the same moving spring group are arranged along the Y-axis direction, and the moving contacts in the same moving spring group are arranged along the Y-axis direction.

[0074] The seventh technical solution is based on the fifth technical solution, wherein the moving spring further includes a moving spring body and an elastic element. The moving spring body has a fixed end and a moving end. The fixed end is connected to the load terminal. The moving end extends away from the fixed end along the extension direction of the moving spring body. The moving contact is fixed to the moving spring body and close to the moving end. One end of the elastic element is connected to the moving spring body, and the other end is adapted to be pushed by a pusher. The pusher drives the moving end to move by pushing the elastic element so that the moving contact closes with the corresponding stationary contact, and drives the moving contact to open with the corresponding stationary contact by pushing the moving end.

[0075] The eighth technical solution is based on the seventh technical solution, wherein the elastic element is a compression spring, one end of the elastic element is connected to the moving spring body at the location of the moving contact, and the other end of the elastic element forms a gap along the movement direction of the moving pusher.

[0076] The ninth technical solution is based on the fourth technical solution. In this solution, the magnetic circuit unit further includes a support member fixed relative to the coil assembly and located within the housing. The coil assembly further includes a coil frame, an iron core, and a yoke. The coil winding is wound around the coil frame, and the coil terminals are fixed to the coil frame. The iron core extends along the Z-axis and is inserted into the coil frame. There are two yokes in each magnetic circuit unit. The two yokes are arranged along the Z-axis. One end of each yoke is connected to the iron core, and the other end forms a magnetic drive end. The two magnetic drive ends drive the armature assembly to rotate by changing the magnetic polarity. There are two support members in each magnetic circuit unit. The two support members are located on both sides of the coil assembly along the Y-axis and are used to support the armature assembly.

[0077] The tenth technical solution is based on the ninth technical solution. Each magnetic drive end has protrusions on both sides along the Y-axis. Each support member has two connecting holes along the Z-axis, suitable for interlocking with the two protrusions on the same side along the Y-axis. Each armature assembly includes an armature, a main body, a cam, and a swinging part fixedly connected to each other. Each armature assembly contains two armatures, extending in parallel directions. Each armature portion is located within the main body, with both ends extending out of the main body to form attractive parts suitable for engaging with the corresponding magnetic drive end. Each armature assembly contains two cams extending from opposite sides of the main body along the Y-axis. The swinging part extends perpendicularly to the Y-axis to engage with the pusher. Each support member has a shaft hole for rotatably engaging with the corresponding cam, located between the two connecting holes along the Z-axis.

[0078] The eleventh technical solution is based on the tenth technical solution, wherein the armature assembly further includes a permanent magnet component placed inside the main body, and the two armatures are respectively connected to the two magnetic poles of the permanent magnet component; the main body, the convex shaft, and the swing part are all made of plastic material, and the main body, the convex shaft, the swing part, the armature, and the permanent magnet component insert are integrally injection molded.

[0079] The twelfth technical solution is based on the tenth technical solution, wherein the pushing member moves along the Z-axis direction, the extension direction of the swing part is perpendicular to the extension direction of the armature, and the moving spring assembly extends along the X-axis direction.

[0080] The thirteenth technical solution is based on the twelfth technical solution. In this solution, the pusher is provided with a first mating hole and a second mating hole along the Z-axis direction. The second mating hole is for the moving spring assembly to extend into the winding axis along the X-axis direction. The first mating hole is for the swinging part to extend into the second mating hole in a direction opposite to the direction in which the moving spring assembly extends into the second mating hole. The pusher is provided with sliding mating parts on both sides along the Y-axis direction. The housing is provided with two sliding grooves that are respectively slidably engaged with the corresponding sliding mating parts along the Z-axis direction.

[0081] The fourteenth technical solution is based on the twelfth technical solution, wherein the moving contact group closes with the corresponding stationary contact group downward along the Z-axis direction; on the first projection plane perpendicular to the Z-axis direction, the projection of the sliding mating part at least partially overlaps with the projection of at least one load terminal; along the Z-axis direction, the first intersection point is located above the rotation axis, the first intersection point is the intersection point of the first plane and the first straight line, the first plane is a plane passing through the rotation axis and parallel to the extension direction of the armature, and the first straight line is a straight line perpendicular to the first plane drawn through the contact point between the swinging part and the pushing member when the moving contact group and the corresponding stationary contact group are closed.

[0082] The fifteenth technical solution is based on the thirteenth or fourteenth technical solution, wherein all positions where the pusher contacts the swinging part are closer to the rotation axis than the second mating hole along the X-axis direction.

[0083] The sixteenth technical solution is based on the fifteenth technical solution, wherein the first mating hole is provided with a first abutting part and a second abutting part on both sides along the Z-axis direction, which are suitable for the swinging part to abut upward and for the swinging part to abut downward; the first abutting part and the second abutting part are both turned outward from the hole wall of the first mating hole along the X-axis direction; the surfaces of the first abutting part and the second abutting part that are suitable for contacting the swinging part are both smooth curved surfaces.

[0084] The seventeenth technical solution is based on the sixteenth technical solution, wherein the portion of the pusher between the first abutment portion and the second abutment portion is bent in an upward direction toward a direction closer to the rotation axis, the outward turning directions of the first abutment portion and the second abutment portion are opposite to each other, and the first abutment portion is turned outward in a direction further away from the rotation axis.

[0085] The eighteenth technical solution is based on the tenth technical solution, wherein the pushing member moves along the X-axis direction, the extension direction of the swing part is parallel to the extension direction of the armature, and the moving spring assembly extends along the Z-axis direction.

[0086] The nineteenth technical solution is based on the eighteenth technical solution, wherein the pusher is provided with a first mating hole for the swing part to extend into the Z-axis direction and a second mating hole for the moving spring assembly to extend into the Z-axis direction along the X-axis direction.

[0087] The twentieth technical solution is based on the thirteenth technical solution. In this solution, the housing includes a base and a cover. The magnetic circuit part, the contact part, and the pushing part are all installed on the base. Each coil terminal and each load terminal penetrate the base downward along the Z-axis. The cover is installed on the base downward along the Z-axis and is fixedly connected to the base. The sliding groove is provided on the base. The base has a slot corresponding to the support member. The support member is inserted into the corresponding slot downward along the Z-axis.

[0088] The twenty-first technical solution is based on the twenty-first technical solution. The base includes a first seat and a second seat. The coil assembly is fixed to the first seat along the Z-axis. Each coil terminal passes through the first seat along the Z-axis. The sliding groove and the slot are disposed in the first seat. Each load terminal passes through the second seat along the Z-axis. The first seat, together with the magnetic circuit portion and the pushing portion, forms a first assembly. The second seat and the contact portion form a second assembly. The first assembly and the second assembly are inserted along the X-axis. After insertion, the moving spring assembly extends into the second mating hole along the X-axis. The first seat and the second seat are engaged along the X-axis, and the first and second assemblies are mutually limited along the Y-axis and Z-axis.

[0089] The twenty-second technical solution is based on the twenty-first technical solution. In this solution, the first base body is provided with a first limiting block, a second limiting block, and a first locking block along the X-axis direction toward the second base body. The second base body is provided with a second locking block along the X-axis direction toward the first base body. The first limiting block is located above the second limiting block along the Z-axis direction. After the first assembly and the second assembly are inserted into place along the X-axis direction, the first locking block and the second locking block engage in a locking fit along the X-axis direction. At least one of the load terminals is inserted between the first limiting block and the second limiting block along the X-axis direction and engages with the first limiting block and the second limiting block in a limiting fit along the Z-axis direction.

[0090] The twenty-third technical solution is based on the twenty-second technical solution, wherein the load terminal is clearance-fitted with the first limiting block and the second limiting block along the Z-axis direction, and the length of the second limiting block fitting with the load terminal along the X-axis direction is less than the length of the first limiting block fitting with the load terminal along the X-axis direction, so that when the first assembly or the second assembly is subjected to a downward force along the Z-axis direction, the end of the second assembly away from the first assembly is allowed to deflect downward relative to the first assembly until the second locking block disengages from the first locking block along the X-axis direction.

[0091] The twenty-fourth technical solution is based on the twenty-second technical solution. In this solution, there are at least two second limiting blocks, each of which is arranged along the Y-axis. At least two adjacent second limiting blocks form a first gap along the Y-axis. The second base is provided with an insert suitable for extending into the first gap along the X-axis. After the second assembly and the first assembly are inserted into each other along the X-axis, the insert and the corresponding two second limiting blocks are limited and engaged along the Y-axis. The two second limiting blocks that form the first gap between each other are provided with the first locking block on their adjacent side. The insert is provided with a second locking block corresponding to the first locking block on both sides along the Y-axis.

[0092] The twenty-fifth technical solution is based on the twentieth technical solution, wherein the base, the contact part, and the pushing part together form a third assembly, each magnetic circuit unit is inserted and fitted with the base along the X-axis direction, after the magnetic circuit unit is inserted into the position, the swing part extends into the first mating hole away from the rotation axis, and the cover is arranged around the coil frame along the X-axis direction to prevent the magnetic circuit unit from detaching from the third assembly along the X-axis direction.

[0093] The twenty-sixth technical solution is based on the twentieth technical solution. The base includes a third body and a fourth body. The coil assembly is fixed to the third body along the Z-axis. Each coil terminal passes through the third body along the Z-axis. The slot is located in the third body. The sliding groove is located in the fourth body. Each load terminal passes through the fourth body along the Z-axis. The third body and the magnetic circuit portion together form a fourth assembly. The fourth body, the pushing portion, and the contact portion together form a fifth assembly. The fourth assembly and the fifth assembly are inserted along the X-axis. After insertion, the swing portion extends into the first mating hole along the X-axis. The third body and the fourth body are engaged along the X-axis, and the fourth assembly and the fifth assembly are mutually limited along the Y-axis and Z-axis.

[0094] The twenty-seventh technical solution is based on the twentyth technical solution, wherein the base includes a fifth base, a sixth base, and a seventh base; the coil assembly is fixed to the fifth base along the Z-axis; each coil terminal passes through the fifth base along the Z-axis; the slot is disposed in the fifth base; the sliding groove is disposed in the sixth base; and each load terminal passes through the seventh base along the Z-axis. The fifth base and the magnetic circuit portion together form a sixth assembly; the sixth base and the pushing portion together form a seventh assembly; and the seventh base and the magnetic circuit portion together form an eighth assembly. The sixth, seventh, and eighth assemblies are inserted along the X-axis. After insertion, the moving spring assembly extends into the second mating hole along the X-axis, and the swing portion extends into the first mating hole along the X-axis. The fifth base and the sixth base are engaged, and the sixth and seventh assemblies are mutually limited in their Y-axis and Z-axis directions.

[0095] The twenty-eighth technical solution is based on the fourth technical solution, wherein the part of the pusher that is suitable for contacting the moving spring assembly is made of metal.

[0096] The twenty-ninth technical solution is based on the twenty-eighth technical solution, wherein the pushing component is made of metal.

[0097] The thirtieth technical solution is based on the twenty-ninth technical solution, wherein the pushing component is a stainless steel sheet metal part, an aluminum casting, or an aluminum alloy casting.

[0098] The thirty-first technical solution is based on the twenty-eighth technical solution, wherein the pushing component includes a base and a sliding engagement portion. The portion of the pushing component that contacts the moving spring assembly and the portion that contacts the armature assembly are both formed in the base. The base is made of metal. The sliding engagement portion is fixed to both sides of the base along the Y-axis direction. The sliding engagement portion and the housing slide in engagement along the movement direction of the pushing component. The sliding engagement portion is made of plastic. The sliding engagement portion and the base insert are integrally injection molded.

[0099] The thirty-second technical solution is based on the thirty-first technical solution, wherein the substrate is a stainless steel sheet metal part or an aluminum casting part, and the dimension of the sliding mating part along the X-axis is greater than the thickness of the substrate along the X-axis.

[0100] The thirty-third technical solution is based on the fourth technical solution, wherein the number of magnetic circuit units is two, the number of load terminals is three, and the number of common terminals is one.

[0101] The thirty-fourth technical solution is based on the thirty-third technical solution, wherein the housing includes a base, the contact portion is mounted on the base, and each load terminal penetrates the base downward along the Z-axis direction; among the load terminals, the other two load terminals besides the common terminal are arranged along the Y-axis direction.

[0102] The thirty-fifth technical solution is based on the thirty-fourth technical solution, wherein the downwardly extending portion of the common terminal is located in the middle of the base along the Y-axis direction.

[0103] The thirty-sixth technical solution is based on the thirty-fourth technical solution, wherein the pushing member moves along the Z-axis direction, and the moving spring assembly extends along the X-axis direction; each load terminal is provided with a connecting part perpendicular to the Z-axis direction, the connecting part being used to connect the stationary contact assembly and / or the moving spring assembly; the connecting part of the common terminal is located above or below the connecting parts of the other two load terminals along the Z-axis direction.

[0104] The thirty-seventh technical solution is based on the thirty-sixth technical solution, wherein the downwardly extending portion of the common terminal is located in the middle of the base along the Y-axis direction; the connecting portion of the common terminal is provided with a first arm and a second arm, the first arm and the second arm extending away from each other along the X-axis direction and respectively corresponding to two magnetic circuit units.

[0105] The thirty-eighth technical solution is based on the thirty-seventh technical solution, wherein the first arm and the second arm are located at the same position along the X-axis direction, and both the first arm and the second arm are connected to a stationary contact group or both are connected to a moving spring group, and the position of the first arm and the second arm along the X-axis direction is closer to the magnetic circuit part than the connection part of the two other load terminals; or, the first arm and the second arm are respectively connected to a stationary contact group and a moving contact group; the first arm connected to the stationary contact group is closer to the magnetic circuit part along the X-axis direction.

[0106] Compared with existing technologies, the above solution has the following beneficial effects:

[0107] In the first technical solution, both the magnetic circuit and the contact portion are mounted within the housing, and the magnetic circuit includes at least two magnetic circuit units. The moving spring assembly, stationary contact, and actuating element are all correspondingly arranged with respect to the magnetic circuit units. Therefore, at least two independently controllable switches are encapsulated within a single relay housing. Compared to existing technologies, this saves housing material, reduces the relay's package size, and occupies less space when implementing more than two switching functions compared to existing technologies.

[0108] In the first technical solution, at least one load terminal is shared by at least two switches to form a common terminal. This common terminal reduces the number of load terminals, improves the integration of the load terminals, and further reduces space occupation and cost. Furthermore, the flexible connection between the load terminal and each moving spring assembly and stationary contact assembly allows for application in most scenarios.

[0109] In the first technical solution, the common terminal is a load terminal, which can be electrically connected to or not electrically connected to an external circuit. When connected to an external circuit, at least two external circuits can be controlled through the common terminal, either by establishing a parallel connection or by establishing a main circuit and branch circuit control. When not electrically connected to an external circuit, the common terminal becomes a component that bridges two or more switches, thereby forming a series connection between the two or more switches. Therefore, it can be flexibly applied to various scenarios through different wiring methods. Since each switch is controlled separately, this series or parallel connection allows the two switches to form an "AND" or "OR" logical relationship. This can be applied not only to simple logic calculations but also to scenarios with higher requirements for safety and reliability, avoiding uncontrolled switches due to the failure of a single functional part formed by the magnetic circuit unit, pusher, moving spring group, and stationary contact group.

[0110] The third technical solution discloses three basic electrical connection relationships inside the relay, which can be selected according to customer needs, especially the loading method of the external circuit, making the relay more versatile.

[0111] In the fourth technical solution, each coil terminal and each load terminal extend downward along the Z-axis direction to facilitate electrical connection with the circuit board.

[0112] In the fifth technical solution, the winding axis of the coil winding extends along the Z-axis direction, which is consistent with the extension direction of each coil terminal and each load terminal, thus reducing the area occupied by the relay.

[0113] In the sixth technical solution, each magnetic circuit unit is arranged along the Y-axis, each moving spring assembly is arranged along the Y-axis, each pushing component is arranged along the Y-axis, and the magnetic circuit part and the contact part are arranged along the X-axis. This makes each functional part set perpendicular to the Y-axis, and each functional part is arranged along the Y-axis. The functional parts do not need to be spatially staggered, which reduces the structural complexity and assembly difficulty.

[0114] In the sixth technical solution, the moving spring assembly includes at least two moving springs, which can reduce the total contact resistance between the moving contact and the stationary contact, reduce heat generation, and reduce power consumption.

[0115] In the sixth technical solution, each moving spring has one moving contact. Compared with the solution where the same moving spring has multiple moving contacts, this can avoid the situation where some moving contacts cannot effectively close with the stationary contacts when the moving spring moves, or it can avoid the situation where some moving contacts cannot be subjected to uniform force when closing, thus increasing the contact resistance.

[0116] In the seventh technical solution, by setting an elastic element between the moving spring body and the pushing element, the pushing element can achieve overtravel, and the moving contact can close more reliably with the stationary contact.

[0117] In the seventh technical solution, the pusher directly pushes the moving end of the moving spring body to disconnect the moving contact from the stationary contact, resulting in a shorter breaking time, thus a shorter arcing time and a longer relay life.

[0118] In the eighth technical solution, the elastic element is a compression spring connected to the moving spring body. Compared with other elastic elements that are connected to the moving spring body in other ways or other forms of elastic elements, the elastic element has stronger impact resistance and can prevent the elastic element from shifting relative to the moving spring body due to impact.

[0119] In the eighth technical solution, the elastic element and the moving spring body are connected at the location of the moving contact, so that the force of the elastic element during deformation can be transmitted to the moving contact more effectively, the moving contact can close more reliably with the stationary contact, and the relay has a higher load capacity.

[0120] In the ninth technical solution, two support members are fixed relative to the coil assembly and are located on both sides of the coil assembly along the Y-axis, which can effectively support the armature assembly and allow the armature assembly to rotate relative to the coil assembly.

[0121] In the tenth technical solution, the connecting hole on the support member and the protrusion on the magnetic drive end are inserted and fitted along the Y-axis, which enables the support member to be positioned more accurately relative to the yoke. Since the support member is the motion reference of the armature assembly, the engaging part can more accurately engage with the magnetic drive end when the armature assembly rotates relative to the coil assembly.

[0122] In the eleventh technical solution, the armature assembly also includes a permanent magnet. The two armatures are respectively connected to the two magnetic pole surfaces of the permanent magnet, so that the relay has a magnetic holding function. The relay can be controlled to change and maintain the open or closed state by simply using a pulse electrical signal, thus saving energy.

[0123] In the eleventh technical solution, the main body, cam shaft, swing part, armature and permanent magnet insert are injection molded as one piece, making the armature assembly easier to manufacture and less likely to lose motion stroke due to tolerance accumulation.

[0124] In the twelfth technical solution, the moving spring assembly extends along the X-axis direction, which can reduce the height of the contact part along the Z-axis direction, which is more conducive to saving space of the relay along the Z-axis direction, and also conducive to increasing the contact gap between the moving contact and the stationary contact along the Z-axis direction, thereby improving the relay's withstand voltage capability.

[0125] In the thirteenth technical solution, the housing is provided with a sliding groove that slides with the sliding engagement part of the pusher, which can improve the certainty of the pusher's movement direction, constrain the pusher's degree of freedom in other directions, and make the pusher less prone to displacement or deformation when subjected to impacts in uncertain directions, thereby improving the reliability of the relay.

[0126] In the fourteenth technical solution, the load terminal portion is located below the sliding fit portion, which helps to increase the current-carrying area of ​​the load terminal, achieve a greater load-bearing capacity, and also helps to reduce heat generation. The first intersection point is located above the rotation axis, that is, the swing portion is offset upward relative to the main body, making it less likely for the sliding fit portion to interfere with the load terminal located below it, making it easier to ensure the movement stroke of the pusher, increasing the distance between the moving contact and the stationary contact, and enhancing the pressure resistance.

[0127] In the fifteenth technical solution, all positions where the pusher contacts the swinging part are closer to the rotation axis in the X-axis direction than the second mating hole (i.e., the position where the pusher contacts the moving spring assembly). This is beneficial to reduce the travel of the pusher in the Z-axis direction while ensuring the distance between the moving contact and the stationary contact. In particular, it is beneficial to lower the highest point of the pusher's travel and to ensure that the highest point does not exceed the highest point of the coil assembly. Therefore, it is beneficial to save the height of the relay in the Z-axis direction.

[0128] In the sixteenth technical solution, the first mating hole is provided with a first abutting part suitable for the swinging part to abut upward and a second abutting part suitable for the swinging part to abut downward on both sides along the Z-axis direction. The first abutting part and the second abutting part are both turned outward from the hole wall of the first mating hole along the X-axis direction, so that the contact point between the swinging part and the pusher can move along the outward turning direction, which is beneficial to reduce the scraping between the swinging part and the pusher or base made of metal material.

[0129] In the sixteenth technical solution, by setting the first and second abutting parts that are outwardly turned along the X-axis, it is beneficial to make the pushing part thinner and to ensure that it always abuts the swinging part correctly. This is beneficial to the miniaturization of the relay and also to ensure that the swinging part always abuts the second abutting part at its lowest point. This ensures that when the pushing part enters the overtravel after the moving contact and the stationary contact make contact, the overtravel distance along the direction of movement of the pushing part ensures that the moving contact always reliably presses against the stationary contact.

[0130] In the sixteenth technical solution, the surfaces of the first abutting part and the second abutting part that are suitable for contacting the swinging part are both smooth curved surfaces, resulting in a smaller coefficient of friction between the pushing member and the swinging part and a longer lifespan for the swinging part.

[0131] In the seventeenth technical solution, the portion of the pusher that bends between the first and second abutment portions reduces the size of the pusher along the Z-axis, making it more advantageous to achieve the above-mentioned function when space is limited in the Z-axis direction. Especially when the swing portion is offset upwards relative to the main body, the distance along the X-axis between the highest and lowest points of the swing portion increases. The bending of the portion of the pusher between the first and second abutment portions ensures that the swing portion can correctly abut against both the first and second abutment portions when swinging upwards to its highest and downwards to its lowest points, allowing the moving contact to correctly close or open with the stationary contact.

[0132] In the eighteenth technical solution, when the pusher bends in the part between the first abutting part and the second abutting part, the outward turning directions of the first abutting part and the second abutting part are opposite to each other, which helps to make the contact point between the swinging part and the first abutting part and the second abutting part closer along the X-axis direction, and avoids the swinging part driving the pusher to move, which would generate a large reciprocating force on the pusher along the X-axis direction.

[0133] In the eighteenth technical solution, the pusher moves along the X-axis direction, causing the moving spring assembly to extend along the Z-axis direction, which can reduce the overall board area of ​​the relay (projected area along the Z-axis direction). Without strictly limiting the height of the relay, the electrical density of the circuit board can be higher.

[0134] In the nineteenth technical solution, the swing part and the moving spring assembly both extend into the first mating hole and the second mating hole respectively along the Z-axis direction, making the assembly of the relay simpler.

[0135] In the twentieth technical solution, the magnetic circuit, contact, and pushing parts are all mounted on the base, and the movement relationship between them is more precise with the base as a reference. Encapsulation is achieved by covering the base with a cover along the Z-axis, making assembly simpler.

[0136] In the twentieth technical solution, the support not only engages with the protrusion of the magnetic drive end along the Y-axis, but also engages with the slot of the housing along the Z-axis. The freedom of the support is completely restricted, which is more conducive to supporting the armature assembly. This prevents the rotation axis of the armature assembly from moving along the X-axis. Furthermore, when the relay is impacted, the massive armature assembly can transmit the impact force to the support through the convex shaft. The support then transmits the force to the housing, making it difficult for the components to undergo relative displacement.

[0137] In the twenty-first technical solution, since the swinging part and the moving spring assembly are respectively inserted into the first mating hole and the second mating hole on the pusher in roughly opposite directions, the base is divided into a first base body and a second base body. The first base body forms a first assembly with the magnetic circuit part and the pusher part, and the second base body forms a second assembly with the contact part. The first assembly and the second assembly are inserted into each other along the X-axis direction, so that the moving spring assembly is inserted into the second mating hole along the X-axis direction during the insertion process. This makes the relay under the configuration of this disclosure easier to assemble and avoids the swinging part and the moving spring assembly from being inserted into the pusher in opposite directions at the same time.

[0138] In the twenty-first technical solution, the first assembly and the second assembly are prevented from separating from each other along the X-axis before being fixed to the cover by a snap-fit ​​connection.

[0139] In the twenty-second technical solution, the first assembly and the second assembly are fixed relative to each other along the Z-axis by the load terminal being limited and engaged with the first and second limiting blocks. Inserting the load terminal between the first and second limiting blocks along the X-axis increases the current-carrying area of ​​the load terminal, which is beneficial for improving load capacity.

[0140] In the twenty-third technical solution, the load terminal is clearance-fitted with the first and second limiting blocks along the Z-axis, and the length of the fit between the second limiting block and the load terminal along the X-axis is less than the length of the fit between the first limiting block and the load terminal along the X-axis. This facilitates the second assembly's end away from the first assembly along the X-axis to deflect downward relative to the first assembly, causing the second locking block to disengage from the first locking block, thus enabling quick disassembly of the first and second assemblies. Simultaneously, because the length of the fit between the first limiting block and the load terminal along the X-axis is larger, the insertion points of the second and first assemblies are less prone to sinking due to downward impact forces along the Z-axis, preventing these insertion points from becoming weak points after relay assembly.

[0141] In the twenty-fourth technical solution, the insert block and the corresponding two second limiting blocks are limited and engaged along the Y-axis direction, so that the first assembly and the second assembly are fixed relative to each other along the Y-axis direction.

[0142] In the twenty-fourth technical solution, the first locking block is located on the side of the second limiting block, and the second locking block is located on the side of the insertion block, so that the connection strength between the first locking block and the second locking block is greater and it is less likely to disengage.

[0143] The twenty-fifth technical solution is a second assembly method for a relay with the same configuration. It involves inserting the magnetic circuit unit into the base along the X-axis, allowing the swinging part to extend into the first mating hole away from the rotation axis. In this case, the coil terminals no longer penetrate the base, but only the coil frame. When the cover is fixed to the base, the cover surrounds the coil frame along the X-axis, preventing the coil frame from detaching from the third assembly along the X-axis.

[0144] In the twenty-fifth technical solution, by using an interference fit between the support member and the protrusion, the support member is prevented from being assembled to the base along the Z-axis direction, so that the magnetic circuit unit can be smoothly installed to the third assembly along the X-axis direction.

[0145] Technical solutions 26 and 27 represent the third and fourth assembly methods for relays with the same configuration.

[0146] In the twenty-eighth technical solution, the part of the pusher that is suitable for contacting the moving spring assembly is made of metal. Therefore, when the external current load is large and the moving spring generates a lot of heat, compared with the technical solution that uses plastic material for the part in contact with the moving spring assembly, it can avoid the situation where the pusher softens or even melts due to the heat of the moving spring assembly, causing the closing stroke of the moving spring assembly to be inconsistent with the design. Thus, the load capacity and reliability of the relay are improved.

[0147] In the twenty-ninth technical solution, the entire pushing component is made of metal, which has higher strength and is less susceptible to the heat generated by the moving spring assembly.

[0148] In the thirtieth technical solution, when the pusher is a stainless steel sheet metal part, it is easier to process and form, the structure is simpler, the strength is higher, and it is more conducive to miniaturization design; when the pusher is an aluminum casting or aluminum alloy casting, it is easier to process and form, the density is lower, the strength is higher, and the cost is lower.

[0149] In the thirty-first technical solution, both the portion of the pusher that contacts the moving spring and the portion that contacts the armature assembly are formed in the base material. The base material is made of metal, which also prevents the pusher from softening or even melting due to heat from the moving spring assembly. The sliding fit between the sliding part and the housing improves the certainty of the pusher's movement direction and restricts the pusher's degrees of freedom in other directions. This makes the pusher less prone to displacement or deformation when subjected to impacts from uncertain directions, thus improving the reliability of the relay.

[0150] In the thirty-first technical solution, the sliding mating part is made of plastic, which makes it easier to slide and fit with the shell, which is also made of plastic, and is less likely to produce scratches that could cause jamming or misalignment. The sliding mating part and the base insert are injection molded as a single piece, resulting in higher dimensional accuracy and smaller dimensional tolerances.

[0151] In the thirty-second technical solution, when the base is a stainless steel sheet metal part, it is easier to process and form, the structure is simpler, the strength is higher, and it is more conducive to miniaturization design; when the base is an aluminum casting part, it is easier to process and form, the density is lower, the strength is higher, and the cost is lower.

[0152] In the thirty-second technical solution, the dimension of the sliding fit part along the X-axis is larger than the thickness of the base body along the X-axis. This is more conducive to making the pusher less likely to deviate along the X-axis and cause jamming when the sliding fit part and the groove have the same clearance. It also changes the contact point with the moving spring to avoid the travel of the moving contact deviating from the design purpose, and ensures the distance between the moving contact and the stationary contact, thereby ensuring the voltage withstand capability of the relay.

[0153] The thirty-third technical solution is the simplest structural embodiment of the third technical solution.

[0154] In the thirty-fourth technical solution, the two load terminals other than the common terminal are arranged along the Y-axis direction, which is consistent with the arrangement direction of each moving spring assembly, making it easier to connect with the moving spring assembly.

[0155] In the thirty-fifth technical solution, the part of the common terminal that extends downward is located in the middle of the base along the Y-axis direction, which is more conducive to utilizing the space between the two moving spring groups and has a higher space utilization rate.

[0156] In the thirty-sixth technical solution, each load terminal has a connection portion perpendicular to the Z-axis, allowing the load terminals to be laid flat along the X and Y axes. This not only reduces the height of the relay along the Z-axis but also increases the current-carrying area of ​​the load terminals, improving the relay's load capacity. It is particularly suitable for applications in high-current environments, such as those with a load current of 80A. Furthermore, by setting a common terminal, the relay structure becomes more compact and occupies less space while meeting the requirements of multi-channel control in high-current environments. The moving spring assembly extends along the X-axis, reducing the height of the contact portion along the Z-axis, further saving space along the Z-axis and increasing the contact gap between the moving and stationary contacts along the Z-axis, thus improving the relay's withstand voltage.

[0157] In the thirty-sixth technical solution, by setting the connection parts of the three load terminals in two layers along the Z-axis direction, all switches are located between the two layers of connection parts, which helps to reduce the height of the relay along the Z-axis direction and make full use of the space in the X-axis and Y-axis directions.

[0158] In the thirty-seventh technical solution, the connection part of the common terminal is provided with a first arm and a second arm that extend away from each other along the X-axis and are respectively provided for the magnetic circuit unit, so that the common terminal has a larger current carrying area when occupying one of the two layers along the Z-axis.

[0159] The thirty-eighth technical solution is two specific implementations of the thirty-seventh technical solution. With each pushing component arranged along the Y-axis, the relay can fully utilize the two layers of space on a plane perpendicular to the Z-axis to achieve a larger load capacity. Among these, connecting both the first and second arms to a stationary contact group or both to a moving spring group is a better implementation. Because the connection points of the two other load terminals are further away from the magnetic circuit along the X-axis than those of the first and second arms, the three load terminals require less material, resulting in lower cost and a more compact structure.

[0160] Furthermore, existing relays include a housing, an armature assembly, a pusher, a moving spring, and a stationary contact. The moving spring provides the moving contact. The armature assembly drives the pusher in linear motion, which in turn drives the moving spring to close or open the moving contact with the stationary contact. In existing technology, the pusher is generally connected to the armature assembly and the moving spring, but not to the housing, thus exhibiting poor shock resistance.

[0161] To address the shortcomings of the prior art, this disclosure also provides a relay that has improved shock resistance compared to relays in the prior art.

[0162] To achieve the above objectives, the following technical solution is adopted:

[0163] The first technical solution relates to a relay, which includes a housing and a pusher. The housing is provided with two sliding grooves arranged along the Y-axis and extending along the Z-axis, corresponding to the pusher. The two sides of the pusher along the Y-axis slide in cooperation with the corresponding sliding grooves along the Z-axis. The groove walls of the two sliding grooves are limited in cooperation with the pusher along the Y-axis and X-axis, wherein the X-axis, Y-axis and Z-axis are perpendicular to each other.

[0164] The second technical solution is based on the first technical solution, wherein the relay further includes an armature assembly and at least one movable spring corresponding to the pusher; the pusher includes a base and a sliding engagement portion; the armature and the movable spring both engage with the base so that the armature drives the movable spring to move through the pusher; the sliding engagement portion is adapted to extend into the slide groove and slide with the slide groove.

[0165] The third technical solution is based on the second technical solution, wherein the substrate is made of metal, the sliding mating part and the shell are made of plastic, and the substrate and the sliding mating part insert are integrally injection molded.

[0166] The fourth technical solution is based on the third technical solution, wherein the dimension of the sliding mating part along the X-axis is greater than the thickness of the substrate.

[0167] The fifth technical solution is based on the second technical solution, wherein the groove wall surface of the chute is provided with an arc segment, the arc segment is in the shape of an arc surface, and the bottom of the groove wall surface of the chute furthest from the other chute along the Y-axis direction is located in the arc segment.

[0168] The sixth technical solution is based on the fifth technical solution. In this solution, the groove wall of each chute further includes a straight section and an inner convex section that are connected to the arc segment. The straight section and the inner convex section are opposite each other along the Y-axis. The straight section is a plane perpendicular to the X-axis. The straight sections of the two chutes are located on the same plane. On the projection plane perpendicular to the Z-axis, at least one straight line passing through the center of the projection circle of the arc segment intersects the projection of the arc segment at two points. The distance between the end of the inner convex section along the X-axis and the straight section is less than the diameter of the arc segment on the projection plane perpendicular to the Z-axis.

[0169] The seventh technical solution is based on the fifth or sixth technical solution, wherein the portion of the sliding mating part adapted to extend into the sliding groove is provided with an arc-shaped outer edge that mates with the arc segment, and at least one concave portion is formed on the arc-shaped outer edge, the concave portion extending along the Z-axis direction.

[0170] The eighth technical solution is based on the second technical solution, wherein the armature assembly rotates relative to the housing about a rotation axis extending along the Y-axis and is provided with a swinging part; the base is provided with a first mating hole for the swinging part to extend into and a second mating hole for the moving spring to extend into along the X-axis along the Z-axis; the direction in which the swinging part extends into the first mating hole is opposite to the direction in which the moving spring extends into the second mating hole; all positions where the pusher contacts the swinging part are closer to the rotation axis than the second mating hole along the X-axis.

[0171] The ninth technical solution is based on the eighth technical solution, wherein the first mating hole is provided with a first abutting part and a second abutting part on both sides along the Z-axis direction, which are suitable for abutting with the swinging part; the first abutting part and the second abutting part are both turned outward from the hole wall of the first mating hole along the X-axis direction; the surfaces of the first abutting part and the second abutting part that are suitable for contacting the swinging part are both smooth curved surfaces.

[0172] The tenth technical solution is based on the ninth technical solution, wherein the moving contact closes downward with the stationary contact, the first mating hole is located above the second mating hole, and the first abutting part is located above the second abutting part; the portion of the pusher between the first abutting part and the second abutting part bends upward in a direction closer to the rotation axis, the outward turning directions of the first abutting part and the second abutting part are opposite to each other, and the first abutting part turns outward in a direction further away from the rotation axis.

[0173] The eleventh technical solution is based on the second technical solution. The relay also includes a coil assembly and two support members corresponding to the pusher. The relay further includes at least two load terminals. The coil assembly includes a coil frame, a coil winding, and a coil terminal, and is provided with two magnetic drive ends. The coil winding is wound around the coil frame, and the winding axis of the coil winding extends along the Z-axis. The coil terminal is electrically connected to the coil winding and passes through the coil frame and the housing downward along the Z-axis. The two magnetic drive ends are arranged along the Z-axis and drive the armature assembly to rotate by changing their polarity. Each magnetic drive end has a protrusion on both sides along the Y-axis. The two support members are fixed relative to the coil assembly and support the armature assembly. The housing is provided with slots for the two support members to be inserted into correspondingly along the Z-axis. Each support member has two connecting holes along the Z-axis that are corresponding to the two protrusions on the same side along the Y-axis and are inserted into each other. Each load terminal is fixedly connected to a moving spring and a stationary contact, and each load terminal passes through the housing downward along the Z-axis and is fixedly connected to the housing.

[0174] Compared with existing technologies, the above solution has the following beneficial effects:

[0175] In the first technical solution, two sliding grooves are respectively slidably engaged with the pusher along the Z-axis direction, and the groove walls of the two sliding grooves are also limitedly engaged with the pusher along the Y-axis and X-axis directions. This improves the certainty of the pusher's movement direction, constrains the pusher's degrees of freedom in other directions, and makes the pusher less prone to displacement or deformation along the X-axis and Y-axis directions when subjected to uncertain impacts, thereby improving the reliability of the relay.

[0176] In the third technical solution, the sliding mating part is made of plastic, which makes it easier to slide and fit with the housing, which is also made of plastic, and is less likely to produce scratches that could cause jamming or misalignment. The sliding mating part and the base insert are injection molded as a single piece, resulting in higher dimensional accuracy and smaller dimensional tolerances. The base is made of metal, which avoids the situation where the push component softens or even melts due to heat from the moving spring assembly, causing the closing stroke of the moving spring assembly to deviate from the design and leading to a decrease in the relay's load capacity. Therefore, the load capacity and reliability of the relay are improved.

[0177] In the fourth technical solution, the dimension of the sliding fit part along the X-axis is larger than the thickness of the base body along the X-axis. This is more conducive to making the pusher less likely to deviate along the X-axis and cause jamming when the sliding fit part and the groove have the same clearance. It also changes the contact point with the moving spring to avoid the travel of the moving contact deviating from the design purpose, and ensures the distance between the moving contact and the stationary contact, thereby ensuring the load capacity of the relay.

[0178] In the fifth technical solution, the bottom of the groove wall that is furthest from the other groove along the Y-axis is located in the arc segment, which is more conducive to resisting the impact force of the pusher along the Y-axis, dispersing the impact force to the housing, and the arc segment can automatically correct the posture of the pusher when the pusher is subjected to an impact force with uncertain direction.

[0179] In the sixth technical solution, the straight section facilitates guidance of the pusher component when it is inserted into the groove along the Z-axis. The distance between the apex of the inner convex section and the straight section is less than the diameter of the arc section, and the fan angle of the arc section is greater than 180 degrees, which maintains the stability of the arc section and makes it less prone to deformation. Simultaneously, by setting the inner convex section, the deflection amount of the pusher component when it deflects in the plane formed by the X and Y axes is effectively limited, improving the certainty of the pusher component's motion direction and constraining its degrees of freedom in other directions. This makes the pusher component less prone to displacement or deformation along the X and Y axes when subjected to uncertain impacts, thus improving the reliability of the relay.

[0180] In the seventh technical solution, the sliding mating part, by setting an inner concave part, can reduce the contact area with the sliding groove, making it less prone to friction or jamming, and the sliding smoother.

[0181] In the eighth technical solution, the armature assembly rotates around a rotation axis extending along the Y-axis, thus ensuring that forces acting on it in all directions are effectively transmitted to the housing, giving the relay better shock resistance. The pusher has a first mating hole along the Z-axis for the swinging part to extend into and a second mating hole along the X-axis for the moving spring to extend into. The second mating hole, where the moving spring extends into the X-axis, reduces the height of the contact portion along the Z-axis, further saving space in the relay along the Z-axis. All positions where the pusher contacts the swinging part are closer to the rotation axis along the X-axis than the second mating hole (i.e., the position where the pusher contacts the moving spring assembly). This helps reduce the travel distance of the pusher along the Z-axis while ensuring the distance between the moving and stationary contacts, particularly reducing the highest point of the pusher's travel distance, ensuring that this highest point does not exceed the highest point of the coil assembly, thus saving the relay's height in the Z-axis direction.

[0182] In the ninth technical solution, the first mating hole is provided with a first abutting part and a second abutting part on both sides along the Z-axis, suitable for contacting the swinging part. Both the first and second abutting parts are turned outwards from the hole wall of the first mating hole along the X-axis, allowing the contact point between the swinging part and the pusher to move along the outward direction. This helps reduce scraping between the swinging part and the metal pusher or substrate. The surfaces of the first and second abutting parts suitable for contacting the swinging part are smooth curved surfaces, resulting in a lower coefficient of friction between the pusher and the swinging part and a longer lifespan for the swinging part. By providing the first and second abutting parts turned outwards along the X-axis, the pusher can be made thinner, ensuring correct contact with the swinging part at all times. This facilitates the miniaturization of the relay and ensures that the swinging part always contacts the second abutting part at its lowest point. This ensures that when the pusher enters the overtravel phase after the moving contact contacts the stationary contact, the overtravel distance along the direction of the pusher's movement ensures that the moving contact always reliably presses against the stationary contact.

[0183] In the tenth technical solution, the portion of the pusher that bends between the first and second abutment portions reduces the size of the pusher along the Z-axis, making it more advantageous to achieve the aforementioned function when space is limited in the Z-axis direction. Especially when the swinging portion is offset upwards relative to the main body, the distance between the swinging portion's highest and lowest points along the X-axis increases. The bending of the portion of the pusher between the first and second abutment portions ensures that the swinging portion can correctly abut against both the first and second abutment portions when swinging upwards to its highest and lowest points, allowing the moving contact to correctly close or open with the stationary contact. When the portion of the pusher that bends between the first and second abutment portions is opposite in direction to each other, it helps to bring the contact points of the swinging portion and the first and second abutment portions closer along the X-axis, preventing a large reciprocating force on the pusher along the X-axis when the swinging portion drives the pusher.

[0184] In the eleventh technical solution, each coil terminal and each load terminal extends downward along the Z-axis direction to facilitate electrical connection with the circuit board.

[0185] In the eleventh technical solution, two support members are fixed relative to the coil assembly and are located on both sides of the coil assembly along the Y-axis, which can effectively support the armature assembly and allow the armature assembly to rotate relative to the coil assembly.

[0186] In the eleventh technical solution, the connecting hole on the support member and the protrusion on the magnetic drive end are inserted and fitted along the Y-axis, which enables the support member to be positioned more accurately relative to the yoke. Since the support member is the motion reference of the armature assembly, the engaging part can more accurately engage with the magnetic drive end when the armature assembly rotates relative to the coil assembly.

[0187] In the eleventh technical solution, the support not only engages with the protrusion of the magnetic drive end along the Y-axis, but also engages with the slot of the housing along the Z-axis. The freedom of the support is completely restricted, which is more conducive to supporting the armature assembly. This prevents the rotation axis of the armature assembly from moving along the X-axis. Furthermore, when the relay is impacted, the massive armature assembly can transmit the impact force to the support through the convex shaft. The support then transmits the force to the housing, making it difficult for the components to undergo relative displacement. Attached Figure Description

[0188] To more clearly illustrate the technical solutions of the embodiments, the accompanying drawings used are briefly described below:

[0189] Figure 1 is an exploded perspective view of the relay except for the cover body in Embodiment 1;

[0190] Figure 2 is a perspective view of the first base in Embodiment 1;

[0191] Figure 3 is a top view of the first base in Embodiment 1;

[0192] Figure 4 is an enlarged view of part A of Figure 3;

[0193] Figure 5 is a perspective view of the second seat in Embodiment 1;

[0194] Figure 6 is a perspective view of the magnetic circuit unit in Embodiment 1;

[0195] Figure 7 is a schematic diagram of the magnetic circuit unit in Embodiment 1;

[0196] Figure 8 is a perspective view of the support component in Embodiment 1;

[0197] Figure 9 is a perspective view of the contact portion in Embodiment 1;

[0198] Figure 10 is a perspective view of the third load terminal and each static contact group in Embodiment 1;

[0199] Figure 11 is a perspective view of the pusher in Embodiment 1;

[0200] Figure 12 is a top view of the pusher in Embodiment 1;

[0201] Figure 13 is an enlarged view of part B of Figure 12;

[0202] Figure 14 is a schematic diagram of the cooperation relationship between the pusher and the first seat in Embodiment 1;

[0203] Figure 15 is an enlarged view of part C of Figure 14;

[0204] Figure 16 is a perspective view of the relay excluding the cover in Embodiment 1;

[0205] Figure 17 is an enlarged view of part D in Figure 16;

[0206] Figure 18 is a schematic diagram of the relay electrical structure in Embodiment 1;

[0207] Figure 19 is a schematic diagram of the relay in Embodiment 1 when both switches are in the open state;

[0208] Figure 20 is a schematic diagram of the relay in Embodiment 1 when both switches are in the closed state;

[0209] Figure 21 is a perspective view of the first assembly in Embodiment 1;

[0210] Figure 22 is a perspective view of the second assembly in Embodiment 1;

[0211] Figure 23 is a bottom view of the relay in Embodiment 1;

[0212] Figure 24 is a cross-sectional view along line EE in Figure 23;

[0213] Figure 25 is a perspective view of the pusher in Embodiment 2;

[0214] Figure 26 is a front view of the relay except for the cover body in Embodiment 3;

[0215] Figure 27 is a right view of the relay except for the cover body in Embodiment 3;

[0216] Figure 28 is a schematic diagram of the structure of the relay except for the cover body in Embodiment 4;

[0217] Figure 29 is a schematic diagram of the structure of the relay except for the cover body in Embodiment 5;

[0218] Figure 30 is a perspective view of the contact portion in Example 6;

[0219] Figure 31 is a schematic diagram of the relay electrical structure in Embodiment Six;

[0220] Figure 32 is a perspective view of the relay excluding the cover in Embodiment 7;

[0221] Figure 33 is a schematic diagram of the relay electrical structure in Embodiment 7;

[0222] Figure 34 is a perspective view of the relay in Embodiment 8, excluding the cover.

[0223] Figure 35 is a schematic diagram of the relay electrical structure in Example 8.

[0224] Key reference numerals in the attached drawings: 1. Relay; 10. Housing; 11. Base; 110. First seat; 111. Coil bracket mounting slot; 112. Slot; 113. Slide groove; 113a. Straight section; 113b. Arc section; 113c. Inwardly protruding section; 114. Coil terminal hole; 115. First limiting block; 116. Second limiting block; 117. First gap; 118. First locking block; 120. Second seat; 121. Load terminal hole; 122. Insert block; 123. First load terminal hole; 124. Second load terminal hole; 125. Third load terminal hole; 126. Second locking block; 130. Third seat; 140. Fourth seat; 150. Fifth... 160. Seat body; 170. Sixth seat body; 20. Magnetic circuit section; 21. Magnetic circuit unit; 21a. First magnetic circuit unit; 21b. Second magnetic circuit unit; 210. Coil assembly; 211. Coil frame; 212. Coil winding; 213. Coil terminal; 214. Iron core; 215. Yoke; 216. Magnetic drive end; 217. Protrusion; 220. Armature assembly; 221. Permanent magnet; 222. Armature; 223. Main body; 224. Protruding shaft; 225. Swinging part; 226. Attracting part; 227. First plane; 228. First straight line; 229. First intersection point; 230. Support member; 231. Connecting hole; 232. Shaft hole; 30. Contact part; 31. Moving spring assembly; 32. Stationary contact assembly; 33. Load terminal; 34. Switch; 31a. First moving spring assembly; 31b. Second moving spring assembly; 310. Moving spring; 311. Moving contact; 312. Moving spring body; 313. Elastic element; 314. Moving contact assembly; 31c. First moving contact assembly; 31d. Second moving contact assembly; 315. Fixed end; 316. Moving end; 32a. First stationary contact assembly; 32b. Second stationary contact assembly; 320. Stationary contact; 33a. First load terminal; 33b. Second load terminal; 33c. Third load terminal; 330. Common terminal; 331. Connecting part 332, First arm; 333, Second arm; 34a, First switch; 34b, Second switch; 40, Pushing part; 41, Pushing member; 41a, First pushing member; 41b, Second pushing member; 410, Base; 411, Sliding fit part; 411a, Recessed part; 412, First mating hole; 413, Second mating hole; 414, First abutting part; 415, Second abutting part; 51, First assembly; 52, Second assembly; 53, Third assembly; 54, Fourth assembly; 55, Fifth assembly; 56, Sixth assembly; 57, Seventh assembly; 58, Eighth assembly; P, Winding axis; Q, Rotation axis. Detailed Implementation

[0225] Unless otherwise specified, the terms “first,” “second,” or “third,” etc., in the claims and description are used to distinguish different objects and not to describe a particular order.

[0226] Unless otherwise specified, in the claims and description, the terms “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “clockwise,” “counterclockwise,” etc., indicate the orientation or positional relationship based on the orientation and positional relationship shown in the drawings, and are only for the purpose of simplifying the description, and do not imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation.

[0227] Unless otherwise specified in the claims and description, the terms "fixed connection" or "fixed connection" shall be interpreted broadly to mean any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection, and fixed connection by other means or components.

[0228] Unless otherwise specified, the terms “comprising,” “having,” and variations thereof in the claims and description shall mean “including but not limited to.”

[0229] Unless otherwise specified in the claims and description, the term "moving spring" includes the moving spring body, the moving contact, and the elastic element when an elastic element is provided between the moving spring body with the moving contact fixed thereto and the pusher, and includes the moving spring body and the moving contact when there is no elastic element.

[0230] In the claims and description, unless otherwise specified, the term "have" means that a technical feature that follows is part of a technical feature that precedes it.

[0231] Unless otherwise specified in the claims and description, the term "extending downwards" means that the coil terminals and load terminals extend downwards along the Z-axis into the relay body, which comprises the housing, coil assemblies, armature assemblies, switches, and actuators. When the magnetic circuit unit includes support members, each support member is also part of the relay body.

[0232] In the claims and description, unless otherwise specified, the term "group" is a collective concept, namely, "moving spring group" is a collection of moving springs formed by at least one moving spring, "stationary contact group" is a collection of stationary contacts formed by at least one stationary contact, and "moving contact group" is a collection of moving contacts formed by at least one moving contact.

[0233] Unless otherwise specified, in the claims and description, the term "corresponding arrangement" means that the two are the same in number and correspond one-to-one.

[0234] Unless otherwise specified in the claims and description, the term "direction of extension of the armature" refers to the orientation of the two engaging portions of the armature.

[0235] Unless otherwise specified in the claims and description, the term "plane of symmetry of the two armatures" refers to a plane parallel to the extension direction of the armatures and located between the two armatures.

[0236] Unless otherwise specified in the claims and description, the term "first locking block and second locking block engaging along the X-axis" means that during the engagement process, the first locking block and / or the second locking block elastically deforms perpendicular to the X-axis until the first locking block and the second locking block are inserted into place and then return to their original shape, so that the first locking block and the second locking block abut against each other along the X-axis and the first assembly and the second assembly cannot disengage from each other along the X-axis.

[0237] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings.

[0238] Example 1

[0239] Referring to Figure 1, which shows the relay 1 in Embodiment 1. As shown in Figure 1, the relay 1 in this embodiment includes a housing 10, a magnetic circuit portion 20, a contact portion 30, and a pushing portion 40.

[0240] As shown in Figure 1, the housing 10 includes a base 11 and a cover (not shown in the figure). The base 11 includes a first seat 110 and a second seat 120 that are detachably fixed to each other.

[0241] As shown in Figure 1, the magnetic circuit portion 20 includes at least two magnetic circuit units 21. In this embodiment, there are two magnetic circuit units 21, namely a first magnetic circuit unit 21a and a second magnetic circuit unit 21b. In this embodiment, the two magnetic circuit units 21 have the same shape and structure. The contact portion 30 includes a moving spring group 31, a stationary contact group 32, and a load terminal 33. In this embodiment, "group" is a collection concept. For example, "moving spring group 31" is a collection of moving springs formed by at least one moving spring, and "stationary contact group 32" is a collection of stationary contacts formed by at least one stationary contact. The number of moving spring groups 31 and stationary contact groups 32 is the same as the number of magnetic circuit units 21, both being two, and they are arranged corresponding to the magnetic circuit units 21. Specifically, the two moving spring groups 31 include a first moving spring group 31a corresponding to the first magnetic circuit unit 21a and a second moving spring group 31b corresponding to the second magnetic circuit unit 21b. In this embodiment, the two moving spring groups 31 have the same shape and structure. The two stationary contact groups 32 include a first stationary contact group 32a corresponding to the first magnetic circuit unit 21a and a second stationary contact group 32b corresponding to the second magnetic circuit unit 21b. In this embodiment, the two stationary contact groups 32 have the same shape and structure. The number of load terminals 33 is three, namely a first load terminal 33a, a second load terminal 33b, and a third load terminal 33c.

[0242] As shown in Figure 1, the pushing part 40 includes pushing members 41. The number of pushing members 41 is the same as the number of magnetic circuit units 21, both being two, and they are arranged corresponding to the magnetic circuit units 21. Specifically, the two pushing members 41 include a first pushing member 41a corresponding to the first magnetic circuit unit 21a and a second pushing member 41b corresponding to the second magnetic circuit unit 21b. In this embodiment, the two pushing members 41 have the same shape and structure.

[0243] Referring to Figures 2, 3, and 4, which illustrate the first base 110 in this embodiment, the first base 110 is made entirely of plastic. As shown in Figure 2, the first base 110 has a coil frame mounting slot 111, two slots 112, and two sliding grooves 113 corresponding to each magnetic circuit unit 21. The coil frame mounting slot 111, the two slots 112, and the two sliding grooves 113 are arranged sequentially along the X-axis and all extend along the Z-axis. The coil frame mounting slot 111 and the two slots 112 are used to mount the corresponding magnetic circuit unit 21. The two sliding grooves 113 are used to mount the corresponding pusher 41.

[0244] As shown in Figures 3 and 4, the two slides 113 have openings facing each other along the Y-axis. The wall of each slide 113 is sequentially provided with a straight section 113a, an arc section 113b, and an inwardly convex section 113c. The straight section 113a of each slide 113 is closer to the coil frame mounting groove 111 along the X-axis than the arc section 113b and the inwardly convex section 113c. The straight section 113a is planar and perpendicular to the X-axis, away from the coil frame mounting groove 111. One end of the arc section 113b connects to the straight section 113a, and the other end connects to the inwardly convex section 113c. The arc segment 113b has an arc-shaped surface. The bottom of the wall of the groove 113 along the Y-axis direction forms the arc segment 113b. On the projection plane perpendicular to the Z-axis direction, at least one straight line passing through the center of the projection of the arc segment 113b intersects the projection of the arc segment 113b at two points, that is, the projection of the arc segment 113b is a major arc. The convex segment 113c connects to the arc segment 113b and protrudes along the X-axis direction towards the straight segment 113a. The distance between the end of the convex segment 113c along the X-axis direction and the straight segment 113a is less than the diameter of the projection of the arc segment 113b on the projection plane perpendicular to the Z-axis direction.

[0245] As shown in Figure 2, the coil frame mounting groove 111 is provided with at least two coil terminal holes 114. In this embodiment, there are three coil terminal holes 114, each arranged along the Y-axis and penetrating the first base 110 along the Z-axis. The first base 110 has a first limiting block 115 and a second limiting block 116 at one end along the X-axis away from the coil frame mounting groove 111. The first limiting block 115 is located above the second limiting block 116 along the Z-axis. There is one first limiting block 115, located in the middle of the first base 110 along the Y-axis and extending away from the coil frame mounting groove 111 along the X-axis. In this embodiment, the second limiting blocks 116 are divided into two groups, arranged along the Y-axis, corresponding to two magnetic circuit units 21 respectively. Each set of second limiting blocks 116 includes two second limiting blocks 116 arranged along the Y-axis direction, with a first gap 117 formed between the two second limiting blocks 116. Each of the two second limiting blocks 116 has a first locking block 118 on its side that is adjacent to each other along the Y-axis direction. In this embodiment, the length of the first limiting block 115 extending along the X-axis direction is greater than the length of each second limiting block 116 extending along the X-axis direction.

[0246] Referring to Figure 5, which shows the second base 120 in this embodiment, the second base 120 is made entirely of plastic. As shown in Figure 5, the second base 110 is provided with load terminal holes 121 and insert blocks 122. The number of load terminal holes 121 is the same as the number of load terminals 33, both being three, and they are arranged one-to-one with the load terminals 33. Specifically, the three load terminal holes 121 include a first load terminal hole 123 corresponding to the first load terminal 33a, a second load terminal hole 124 corresponding to the second load terminal 33b, and a third load terminal hole 125 corresponding to the third load terminal 33c. Each load terminal hole 121 penetrates the second base 120 along the Z-axis direction. Among them, the first load terminal hole 123 and the second load terminal hole 124 are arranged along the Y-axis direction. The third load terminal hole 125 is located in the middle of the second base 120 along the Y-axis direction. The insert block 122 is located at the end away from each load terminal hole 121 along the X-axis direction. The number of insert blocks 122 is the same as the number of first intervals 117, both being two, and they are arranged in a one-to-one correspondence with the first intervals 117. The two insert blocks 122 are arranged along the Y-axis direction. Each insert block 122 extends into the corresponding first interval 117 along the X-axis direction. Each insert block 122 has a second locking block 126 on both sides along the Y-axis direction, corresponding to the first locking block 118.

[0247] In this embodiment, the cover is placed downward along the Z-axis onto the base 11 and fixedly connected to the base 11.

[0248] See Figures 1, 6, and 7. Figures 1, 6, and 7 illustrate the magnetic circuit unit 21 in this embodiment. The magnetic circuit unit 21 is mounted on the first base 110. As shown in Figures 1, 6, and 7, each magnetic circuit unit 21 includes a coil assembly 210, an armature assembly 220, and two support members 230.

[0249] As shown in Figure 1, the coil assembly 210 is fixed relative to the first base 110 and housed within the housing 10. As shown in Figures 6 and 7, the coil assembly 210 includes a coil frame 211, a coil winding 212, coil terminals 213, an iron core 214, and two yokes 215. The coil frame 211 is adapted to be inserted into the corresponding coil frame mounting slot 111 along the Z-axis direction and fixedly connected to the first base 110. The coil frame 211 includes two retaining walls arranged along the Z-axis direction and a shaft located between the two retaining walls, extending along the Z-axis direction. The coil winding 212 is wound around the shaft of the coil frame 211. The winding axis P of the coil winding 212 extends along the Z-axis direction. The number of coil terminals 213 is the same as the number of coil terminal holes 114, both being three, and they are arranged corresponding to the coil terminal holes 114. Each coil terminal 213 is fixed to the coil frame 211 and passes through the retaining wall of the coil frame 211 located below along the Z-axis direction. When the coil frame 211 is fixed to the first base 110, each coil terminal 213 also passes through the corresponding coil terminal hole 114 along the Z-axis direction and extends downward along the Z-axis direction. In this embodiment, "extending downward" means that each coil terminal 213 and each load terminal 33 extend downward along the Z-axis direction into the relay body composed of the housing 10, each coil frame 211, each coil winding 212, each iron core 214, each yoke 215, each armature assembly 220, each support member 230, each moving spring assembly 31, each stationary contact assembly 32, and each pusher member 41. The iron core 214 extends along the Z-axis direction and is inserted into the shaft of the coil frame 210. Two yokes 215 are arranged along the Z-axis direction, with one end of each yoke 215 fixed to the iron core 214 and the other end forming a magnetic drive end 216. The two magnetic drive ends 216 drive the armature assembly 220 to rotate relative to the coil assembly 210 by changing the magnetic polarity. In this embodiment, each magnetic drive end 216 has a protrusion 217 on both sides along the Y-axis.

[0250] As shown in Figures 6 and 7, the armature assembly 220 rotates relative to the coil assembly 210 about a rotation axis Q extending along the Y-axis and is housed within the housing 10. The armature assembly 220 includes a permanent magnet 221 fixedly connected to each other, two armatures 222, a main body 223, two convex shafts 224, and a swing portion 225. The permanent magnet 221 is housed within the main body 223 and has two magnetic pole faces. The two armatures 222 are fixedly connected to the two magnetic pole faces of the permanent magnet 221, respectively. The extending directions of the two armatures 222 are parallel to each other. Each armature 222 is partially located within the main body 223, and both ends of each armature 222 extend out of the main body 223 along its extending direction, forming an attraction portion 226 suitable for engaging with the corresponding magnetic drive end 216. In this embodiment, the "extending direction of the armature 222" refers to the arrangement direction of the two attraction portions 226 of the armature 222. Two convex shafts 224 extend from opposite sides of the main body 223 along the Y-axis. The two convex shafts 224 are used to establish a rotational connection with the two support members 230.

[0251] The swing portion 225 extends from the main body 223 perpendicular to the Y-axis to cooperate with the pusher 41. In this embodiment, the extension direction of the swing portion 225 is perpendicular to the extension direction of the armature 222. Specifically, in this embodiment, the intersection of the first plane 227 and the first straight line 228 is the first intersection point 229, which is located above the rotation axis Q along the Z-axis. The first plane 227 is a plane passing through the rotation axis Q and parallel to the extension direction of the armature 222. The first straight line 228 is a straight line perpendicular to the first plane 227 drawn through the contact point between the swing portion 225 and the pusher 41 when the moving spring assembly 31 and the stationary contact assembly 32 are closed. In this embodiment, the main body 223, the two convex shafts 224, and the swing portion 225 are all made of plastic and are integrated. The two armatures 222 are both made of metal. The main body 223, two convex shafts 224, a swinging part 225, a permanent magnet 221, and two armatures 222 are integrally injection molded to form the armature assembly 220 in this embodiment. As can be seen from the configuration of the armature assembly 220 in this embodiment, the relay 1 in this embodiment is a magnetic latching relay. Of course, in other embodiments, the relay 1 may not have a magnetic latching function.

[0252] Referring to Figures 6 and 8, which illustrate the two support members 230 in this embodiment, as shown in Figures 6 and 8, the two support members 230 are fixed relative to the coil assembly 210 and located within the housing 10. The two support members 230 support the armature assembly 220. Specifically, the two support members 230 are located on opposite sides of the coil assembly 210 along the Y-axis and correspond one-to-one with the two slots 112. The two support members 230 are adapted to be inserted downwards into the corresponding slots 112 along the Z-axis. Each support member 230 extends along the Z-axis. Each support member 230 has two connecting holes 231 arranged along the Z-axis. The two connecting holes 231 are adapted to be inserted into two protrusions 217 located on the same side along the Y-axis. Each support member 230 has a shaft hole 232 that rotatably engages with a corresponding convex shaft 224, the shaft hole 232 being located between the two connecting holes 231 along the Z-axis.

[0253] Referring to Figures 1, 9, and 10, which illustrate the contact portion 30 in this embodiment, as shown in Figure 1, the contact portion 30 is mounted on the second base 120. The contact portion 30 and the magnetic circuit portion 20 are arranged along the X-axis direction.

[0254] As shown in Figure 9, each moving spring group 31 is arranged along the Y-axis direction. Each moving spring group 31 extends along the X-axis direction. Each moving spring group 31 includes at least one moving spring 310, and more preferably, each moving spring group 31 includes at least two moving springs 310. In this embodiment, each moving spring group 31 includes three moving springs 310. In the same moving spring group 31, each moving spring 310 is arranged along the Y-axis direction. Each moving spring 310 includes at least one moving contact 311, a moving spring body 312, and an elastic element 313. In this embodiment, each moving spring 310 has one moving contact 311. All moving contacts 311 in the same moving spring group 31 form a moving contact group 314. In this embodiment, the number of moving contact groups 314 is the same as the number of moving spring groups 31, both being two. The two moving contact groups 314 include a first moving contact group 31c belonging to the first moving spring group 31a and a second moving contact group 31d belonging to the second moving spring group 31b. The movable spring body 312 has a fixed end 315 and a movable end 316. The fixed end 315 is connected to the load terminal 33. The movable end 316 extends away from the fixed end 315 along the extending direction of the movable spring body 312. In this embodiment, the fixed end 315 and the movable end 316 are arranged along the X-axis. The movable contact 311 is fixed to the movable spring body 312 and close to the movable end 316. One end of the elastic element 313 is connected to the movable spring body 312, and the other end is adapted to be pushed by the pusher 41. In this embodiment, the elastic element 313 is a compression spring. One end of the elastic element 313 is connected to the movable spring body 312 at the location of the movable contact 311. The other end of the elastic element 313 is adapted to be pushed by the pusher 41 and forms a gap with the movable end 316 along the movement direction of the pusher 41.

[0255] As shown in Figure 9, each stationary contact group 32 has a stationary contact 320 that corresponds one-to-one with all the moving contacts 311 in the corresponding moving spring group 31. In this embodiment, the moving contacts 311 close with the stationary contacts 320 downward along the Z-axis and open with the stationary contacts 320 upward along the Z-axis. Correspondingly, the moving contact group 314 closes with the corresponding stationary contact group 32 downward along the Z-axis and opens with the corresponding stationary contact group 32 upward along the Z-axis. Specifically, the moving contact group 31c closes or opens with the stationary contact group 32a along the Z-axis, and the moving contact group 31d closes or opens with the stationary contact group 32b along the Z-axis. In this embodiment, the moving spring group 31 and the corresponding stationary contact group 32 constitute a switch 34. Specifically, the first moving spring group 31a and the first stationary contact group 32a constitute a first switch 34a, and the second moving spring group 31b and the second stationary contact group 32b constitute a second switch 34b.

[0256] As shown in Figures 1, 9, and 10, each load terminal 33 is configured corresponding to a load terminal hole 121. Specifically, the first load terminal 33a corresponds to the first load terminal hole 123, the second load terminal 33b corresponds to the second load terminal hole 124, and the third load terminal 33c corresponds to the third load terminal hole 125. Each load terminal 33 is fixed to the second base 120 and passes through the corresponding load terminal hole 121 along the Z-axis direction, extending downwards out of the aforementioned relay body. Specifically, the first load terminal 33a and the second load terminal 33b are arranged along the Y-axis direction, and the portion of the third load terminal 33c extending downwards out of the base 11 is located at the middle of the base 11 along the Y-axis direction. The moving spring assembly 31 and the stationary contact assembly 32 in each switch 34 are respectively connected to different load terminals 33. At least one load terminal 33 is simultaneously connected to at least two stationary contact assemblies 32 to form a common terminal 330. In this embodiment, the first load terminal 33a is fixedly connected to and electrically connected to the first moving spring assembly 31a. The second load terminal 33b is fixedly connected to and electrically connected to the second moving spring assembly 31b. The third load terminal 33c is fixedly connected to and electrically connected to the first stationary contact assembly 32a and the second stationary contact assembly 32b to form a common terminal 330. In this embodiment, each load terminal 33 is provided with a connecting portion 331 perpendicular to the Z-axis direction. The connecting portion 331 is used to connect the stationary contact assembly 32 and / or the moving spring assembly 31.

[0257] In this embodiment, the connection portion 331 of the common terminal 330 is located below the connection portions 331 of the other two load terminals 33 along the Z-axis direction, and the connection portions 331 of the other two load terminals 33 are located on the same plane along the Z-axis direction. Specifically, the connection portion 331 of the third load terminal 33c is located below the connection portions 331 of the first load terminal 33a and the second load terminal 33b along the Z-axis direction, and the connection portions 331 of the first load terminal 33a and the second load terminal 33b are located on the same plane along the Z-axis direction. As shown in FIG10, in this embodiment, the connection portion 331 of the common terminal 330 is provided with a first arm 332 and a second arm 333. The first arm 332 and the second arm 333 extend away from each other along the X-axis direction and are respectively provided for two magnetic circuit units 20. In this embodiment, the first arm 332 and the second arm 333 are both connected to the stationary contact group 32, and the positions of the first arm 332 and the second arm 333 along the X-axis direction are closer to the magnetic circuit portion 20 than the connection portions 331 of the two other load terminals 33. Specifically, the first arm 332 is connected to the first stationary contact group 32a, and the second arm 333 is connected to the second stationary contact group 32b. The positions of the first arm 332 and the second arm 333 along the X-axis are closer to the magnetic circuit portion than the connection portion 331 of the first load terminal 33a and the connection portion 332 of the second load terminal 33b.

[0258] Referring to Figures 11 to 17, which illustrate the pusher 41 in this embodiment, each pusher 41 is mounted on the first base 110 and located within the housing 10. In this embodiment, the pusher 41 moves relative to the housing 10 along the Z-axis. As shown in Figures 11, 16, and 17, in this embodiment, the pusher 41 includes a base 410 and two sliding mating portions 411. The base 410 has a first mating hole 412 and a second mating hole 413 arranged from top to bottom along the Z-axis. The first mating hole 412 allows the swing portion 225 to extend away from the coil assembly 210 along the X-axis. The second mating hole 413 allows the moving spring assembly 31 to extend towards the winding axis P along the X-axis. Therefore, in this embodiment, the mating direction between the swing portion 225 and the pusher 41 is substantially opposite to the mating direction between the moving spring assembly 31 and the pusher 41. The first mating hole 412 has a first abutting portion 414 and a second abutting portion 415 on both sides along the Z-axis direction, from top to bottom, respectively, suitable for abutting against the swing portion 225. In this embodiment, the moving contact group 314 closes downward along the Z-axis direction with the corresponding stationary contact group 32 and opens upward along the Z-axis direction with the corresponding stationary contact group 32. Therefore, the swing portion 225 abuts downward with the second abutting portion 415 during the closing stroke and abuts upward with the first abutting portion 414 during the opening stroke. In this embodiment, both the first abutting portion 414 and the second abutting portion 415 are turned outward from the hole wall of the first mating hole 412 along the X-axis direction. The surfaces of the first abutting portion 414 and the second abutting portion 415 suitable for abutting against the swing portion 225 form smooth curved surfaces; in this embodiment, they are arc surfaces. In this embodiment, the portion of the pusher 41 between the first abutting portion 414 and the second abutting portion 415 bends upward in a direction closer to the rotation axis Q. The first abutment portion 414 and the second abutment portion 415 are turned outward in opposite directions. Specifically, the outward turning direction of the first abutment portion 414 is towards the load terminal 33 along the X-axis, and the outward turning direction of the second abutment portion 415 is towards the rotation axis Q along the X-axis. As shown in Figures 12 and 13, two sliding fit portions 411 are respectively provided on both sides of the base 410 along the Y-axis. The portion of the sliding fit portion 411 adapted to extend into the slide groove 113 is generally arc-shaped on the projection plane perpendicular to the Z-axis, and at least one concave portion 411a is formed on the outer edge of the arc shape, extending along the Z-axis. In this embodiment, there are two concave portions 41.

[0259] As shown in Figures 14 and 15, the two sliding mating parts 411 and the two sliding grooves 113 of the housing 10 slide in the direction of movement of the pusher 41, which in this embodiment is along the Z-axis. Because of the inner protrusion 113c, the two sliding grooves 113 substantially enclose the portion of the corresponding sliding mating part 411 extending into the groove 113, and the groove 113 provides a limiting fit for the pusher 41 along the Y-axis. Each groove 113 and its corresponding sliding mating part 411 provide a limiting fit along the X-axis. In this embodiment, the base 410 is made of metal, specifically stainless steel, and is a sheet metal part. The metal material can also be aluminum or aluminum alloy. In other embodiments, the base 410 can also be a casting. The sliding mating parts 411 are made of plastic. The base 410 and the two sliding mating parts 411 are integrally injection molded. The dimension of the sliding mating part 411 along the X-axis is larger than the thickness of the base 410 along the X-axis. In other embodiments, only the portion of the base 410 in contact with the moving spring assembly 31 is made of metal; that is, both edges of the second mating hole 413 along the Z-axis are made of metal. In other embodiments, only the upper edge of the second mating hole 413 along the Z-axis is made of metal. This upper edge is used to contact and push the moving spring assembly 31, causing the moving contact assembly 314 and the stationary contact assembly 32 to close. In this embodiment, the upper edge is used to contact and push the elastic element 313, which elastically deforms relative to the moving spring body 312, to close the moving contact assembly 314 and the stationary contact assembly 32. In other embodiments, the moving spring 310 only has the moving spring body 312, and the upper edge contacts and pushes the moving end 316 of the moving spring body 312 to close the moving contact assembly 314 and the stationary contact assembly 32.

[0260] Referring to Figures 16 to 20, which illustrate the internal and electrical structures of the relay 1 in this embodiment, as shown in Figures 16 and 17, the first magnetic circuit unit 21a and the second magnetic circuit unit 21b are respectively mounted on the base 11 along the Z-axis direction. The two sliding engagement portions 411 of the first pusher 41a are respectively slidably engaged with the corresponding sliding grooves 113 along the Z-axis direction. The two sliding engagement portions 411 of the second pusher 41b are respectively slidably engaged with the corresponding sliding grooves 113 along the Z-axis direction. The first load terminal 33a, the second load terminal 33b, and the third load terminal 33c are respectively fixedly connected to the base 11. The first moving spring assembly 31a is fixedly connected to the first load terminal 33a, and the second moving spring assembly 31b is fixedly connected to the second load terminal 33b. The first stationary contact assembly 32a and the second stationary contact assembly 32b are respectively fixedly connected to the third load terminal 33c. The swing portion 225 of the first magnetic circuit unit 21a extends into the first engagement hole 412 of the first pusher 41a. The swing portion 225 of the second magnetic circuit unit 21b extends into the first mating hole 412 of the second pusher 41b. The moving ends 316 and elastic members 313 of each moving spring 310 of the first moving spring assembly 31a extend into the second mating hole 413 of the first pusher 41a, and the moving ends 316 and elastic members 313 of each moving spring 310 of the second moving spring assembly 31b extend into the second mating hole 413 of the second pusher 41b.

[0261] As shown in Figure 18, after the relay 1 in this embodiment is assembled, the first magnetic circuit unit 21a controls the first switch 34a to close or open via the first pusher 41a. The two ends of the first switch 34a are respectively connected to the first load terminal 33a and the third load terminal 33c, and the first switch 34a independently controls the connection between the first load terminal 33a and the third load terminal 33c. The second magnetic circuit unit 21b controls the second switch 34b to close or open via the second pusher 41b. The two ends of the second switch 34b are respectively connected to the second load terminal 33b and the third load terminal 33c, and the second switch 34b independently controls the connection between the second load terminal 33b and the third load terminal 33c. The first switch 34a and the second switch 34b must be closed simultaneously for the first load terminal 33a and the second load terminal 33b to conduct.

[0262] As shown in Figures 19 and 20, in this embodiment, regardless of the situation, the position where the pusher 41 abuts against the swing portion 225 is closer to the rotation axis Q than the second mating hole 413 along the X-axis direction (see Figure 6). In this embodiment, on the first projection plane perpendicular to the Z-axis direction, the projection of the sliding mating portion 411 at least partially overlaps with the projection of at least one load terminal 33. Specifically, the projection of the sliding mating portion 411 at least partially overlaps with the projection of the third load terminal 33c. Since the swing portion 225 is configured such that the first intersection point 229 (see Figure 7) is located above the rotation axis Q along the Z-axis direction in this embodiment, the sliding mating portion 411 and the third load terminal 33c will not interfere along the Z-axis direction.

[0263] As shown in Figure 19, when switch 34 is in the open state, the moving contact 311 is disconnected from the stationary contact 320, and the swing part 225 abuts upward against the first abutment part 414, while the lower edge of the second mating hole 413 abuts upward against the moving end 316. When switch 34 needs to be closed, the swing part 225 moves downward and abuts against the second abutment part 415, and the moving contact 311 contacts the stationary contact 320. After the moving contact 311 contacts the stationary contact 320, the swing part 225 continues to move downward into overtravel, and the pushing member 41 continues to move downward until, as shown in Figure 20, the swing part 225 moves downward to its limit. The elastic member 313 deforms to its limit, and the moving contact 311 and the stationary contact 320 are completely closed. When switch 34 needs to be turned off, the swing part 225 abuts against the first abutting part 414, causing the pushing member 41 to move upward. The lower edge of the second mating hole 413 of the pushing member 41 moves upward until it abuts against the moving end 316, and continues to drive the moving end 316 to move upward. At this time, the elastic member 311 restores its deformation, and finally reaches the state where switch 34 is turned off as shown in Figure 19.

[0264] In this embodiment, the assembly process of relay 1 includes:

[0265] Step 1: Assemble the magnetic circuit part 20 and the pushing part 40 to the first base 110 to form the first assembly 51 as shown in FIG21; assemble the contact part 30 to the second base 120 to form the second assembly 52 as shown in FIG22.

[0266] Step 1, the process of assembling the magnetic circuit part 20 and the pushing part 40 to the first base 110 to form the first assembly 51 includes the following steps:

[0267] Step 1.1: Assemble the armature assembly 220 and the support 230 into the coil assembly 210 to form the magnetic circuit unit 21;

[0268] Step 1.2: Install each magnetic circuit unit 21 and the corresponding pusher 41 onto the first base 110. During the installation of each magnetic circuit unit 21 and the corresponding pusher 41, insert the swing part 225 into the first mating hole 412, insert the sliding mating part 411 downward along the Z-axis into the corresponding slide groove 113, insert the support 230 downward along the Z-axis into the slot 112, and insert each coil terminal 213 downward along the Z-axis through the first base 110.

[0269] Step 2: Insert the first assembly 51 and the second assembly 52 into place along the X-axis, and extend the movable spring assembly 31 into the second mating hole 413 along the X-axis; and

[0270] Step 3: Place the cover onto the base 11 and secure it to the base 11.

[0271] Referring to Figures 23 and 24, these figures show the first assembly 51 and the second assembly 52 fixed relative to each other after being inserted into place. As shown in Figures 23 and 24, during the insertion process of the first seat 110 and the second seat 120, the insert 122 is inserted into the first gap 117 (see Figure 2) along the X-axis direction, and the first locking block 118 (see Figure 2) of the second limiting block 116 and / or the second locking block 126 (see Figure 22) of the insert 122 elastically deform. After insertion, the first locking block 118 and the second locking block 126 recover their deformation and hook onto each other, engaging in a locking fit along the X-axis direction. After insertion, the insert 122 and the corresponding two second limiting blocks 116 engage in a limiting fit along the Y-axis direction. After insertion, the third load terminal 33c extends into the gap between the first limiting block 115 and the second limiting block 116 along the X-axis direction, and the third load terminal 33c is limited and engaged with the first limiting block 115 and the second limiting block 116 along the Z-axis direction. In this embodiment, the third load terminal 33c is clearance-fitted with the first limiting block 115 and the second limiting block 116 along the Z-axis direction, and the length of the engagement between the second limiting block 116 and the third load terminal 33c along the X-axis direction is less than the length of the engagement between the first limiting block 115 and the third load terminal 33c along the X-axis direction. This allows the end of the second assembly 52 away from the first assembly 51 along the X-axis direction to be allowed to deflect downward relative to the first assembly 51 until the second locking block 126 disengages from the first locking block 118 along the X-axis direction when the first assembly 51 or the second assembly 52 is subjected to a downward force along the Z-axis direction.

[0272] In this embodiment, when the cover is fixed to the base 11, it can prevent the first assembly 51 and the second assembly 52 from separating along the X-axis.

[0273] In this embodiment, the magnetic circuit portion 20, the contact portion 30, and the pushing portion 40 are all mounted on the housing. The magnetic circuit portion 20 includes at least two magnetic circuit units 21, and the moving spring assembly 210, the stationary contact assembly 32, and the pushing member 41 are all correspondingly arranged with the magnetic circuit portion 20. Therefore, at least two independently controllable switches are encapsulated in the housing 10 of a relay. Compared with the prior art, this saves material on the housing 10, reduces the packaging volume of the relay 1, and occupies less space when implementing more than two switching functions compared to the prior art.

[0274] In this embodiment, at least one load terminal 33 is shared by at least two switches 34 to form a common terminal 330. This common terminal 330 reduces the number of load terminals 33, improves the integration of the load terminals 33, and further reduces space occupation and lowers costs. Furthermore, the flexible connection between the load terminal 33 and each moving spring assembly 31 and stationary contact assembly 32 allows it to be applied to most scenarios.

[0275] In this embodiment, the common terminal 330 is the load terminal 33, which can be electrically connected to an external circuit or not. When connected to an external circuit, at least two external circuits can be controlled through the common terminal 330, either by establishing a parallel connection or by establishing a main circuit and branch circuit control. When not electrically connected to an external circuit, the common terminal 330 becomes a component that bridges two or more switches 34, thereby forming a series connection between the two or more switches 34. Therefore, it can be flexibly applied to various scenarios through different wiring methods. Since each switch 34 is controlled separately, this series or parallel connection allows the two switches to form an "AND" or "OR" logical relationship. This can be applied not only to simple logical calculations but also to scenarios with higher requirements for safety and reliability, avoiding uncontrolled switches due to the failure of a single functional part formed by the magnetic circuit unit 21, the pusher 41, the moving spring group 31, and the stationary contact group 32.

[0276] The electrical connection relationship inside relay 1 in this embodiment can be selected according to customer needs, especially the loading method of external circuit, so that the relay has greater versatility.

[0277] In this embodiment, each coil terminal 213 and each load terminal 33 extend downward along the Z-axis direction to facilitate electrical connection with the circuit board.

[0278] In this embodiment, the winding axis P of the coil winding 212 (see Figure 16) extends along the Z-axis direction, which is consistent with the extension direction of each coil terminal 213 and each load terminal 33, thereby reducing the area occupied by the relay 1.

[0279] In this embodiment, each magnetic circuit unit 21 is arranged along the Y-axis direction, each moving spring assembly 31 is arranged along the Y-axis direction, each pushing member 41 is arranged along the Y-axis direction, and the magnetic circuit part 20 and the contact part are arranged along the X-axis direction, so that each functional part is set perpendicular to the Y-axis direction. Since each functional part is arranged along the Y-axis direction, the functional parts do not need to be spatially staggered, which reduces the structural complexity and assembly difficulty.

[0280] In this embodiment, the moving spring assembly 31 includes at least two moving springs 310, which can reduce the total contact resistance between the moving contact 311 and the stationary contact 320, reduce heat generation, and reduce power consumption.

[0281] In this embodiment, each moving spring 310 is provided with a moving contact 311. Compared with the scheme of providing multiple moving contacts for the same moving spring 310, it can avoid some moving contacts 311 failing to effectively close with the stationary contact 320 when the moving spring 311 is activated, or it can avoid some moving contacts 310 increasing their contact resistance when they are closed due to the inability to be subjected to uniform force.

[0282] In this embodiment, by providing an elastic element 313 between the moving spring body 312 and the pusher 41, the pusher 41 can achieve overtravel, and the moving contact 311 can more reliably close with the stationary contact 320.

[0283] In this embodiment, the pusher 41 directly pushes the moving end 316 of the moving spring body 312 to cause the moving contact 311 to disconnect from the stationary contact 320. The disconnection time is shorter, so the arcing time is shorter and the life of the relay 1 is longer.

[0284] In this embodiment, the elastic element 313 is a compression spring connected to the moving spring body 312. Compared with other elastic elements 313 that are connected to the moving spring body 312 in other ways or other forms, the elastic element 313 has stronger impact resistance and can prevent the elastic element 313 from shifting relative to the moving spring body 312 due to impact.

[0285] In this embodiment, the elastic element 313 and the moving spring body 312 are connected at the location of the moving contact 311, so that the force of the elastic element 313 during deformation can be transmitted to the moving contact 311 more effectively, the moving contact 311 can close more reliably with the stationary contact 320, and the load capacity of the relay 1 is higher.

[0286] In this embodiment, two support members 230 are fixed relative to the coil assembly 210 and are located on both sides of the coil assembly 210 along the Y-axis, which can effectively support the armature assembly 220 and allow the armature assembly 220 to rotate relative to the coil assembly 210.

[0287] In this embodiment, the connecting hole 231 on the support member 230 and the protrusion 217 on the magnetic drive end 216 are inserted and engaged along the Y-axis, which enables the support member 230 to be positioned more accurately relative to the yoke 215. Since the support member 230 is the motion reference of the armature assembly 220, the engaging part 226 can more accurately engage with the magnetic drive end 216 when the armature assembly 220 rotates relative to the coil assembly 210.

[0288] In this embodiment, the armature assembly 220 also includes a permanent magnet 221. Two armatures 222 are respectively connected to the two magnetic poles of the permanent magnet 221, so that the relay 1 has a magnetic holding function. The relay 1 can be controlled to change and maintain the open or closed state by a pulse electrical signal, thus saving power.

[0289] In this embodiment, the main body 223, two convex shafts 224, swing part 225, two armatures 222 and permanent magnet 221 are integrally injection molded. The armature assembly 220 is easier to manufacture and is less likely to lose its stroke due to tolerance accumulation.

[0290] In this embodiment, the moving spring assembly 31 extends along the X-axis direction, which can reduce the height of the contact portion 30 along the Z-axis direction, which is more conducive to saving space of the relay 1 along the Z-axis direction, and also conducive to increasing the contact gap between the moving contact 311 and the stationary contact 320 along the Z-axis direction, thereby improving the withstand voltage capability of the relay 1.

[0291] In this embodiment, the two slide grooves 113 are respectively slidably engaged with the pusher 41 along the Z-axis direction, and the groove walls of the two slide grooves 113 are limited to the pusher along the Y-axis and X-axis directions. This can improve the certainty of the movement direction of the pusher 41, constrain the degree of freedom of the pusher 41 in other directions, and make the pusher 41 less likely to displace or deform along the X-axis and Y-axis directions when subjected to uncertain impacts, thereby improving the reliability of the relay 1.

[0292] In this embodiment, the bottom of the groove wall surface of the slide 113, which is furthest from the other slide 113 along the Y-axis, is located in the arc segment 113b, which is more conducive to resisting the impact force of the pusher 41 along the Y-axis, so that the impact force is dispersed to the housing 10. Furthermore, the arc segment 113b can automatically correct the posture of the pusher 41 when the pusher 41 is subjected to an impact force with an uncertain direction.

[0293] In this embodiment, by setting a straight section 113a, it is more conducive to guiding the pusher 41 when it is inserted into the slide groove 113 along the Z-axis direction. The distance between the vertex of the inner convex section 113c and the straight section 113a is less than the diameter of the arc section 113b, and the fan angle of the arc section 113b is greater than 180 degrees, which can maintain the stability of the arc section 113b and make the arc section 113b less prone to deformation.

[0294] In this embodiment, the housing 10 is provided with a sliding groove 113 that slides with the sliding engagement portion 411 of the pusher 41. The two sliding grooves 113 slide with the sliding engagement portion 41 along the Z-axis direction, respectively. The groove wall surfaces of the two sliding grooves 113 are limited to the two sliding engagement portions 41 along the Y-axis and X-axis directions. Furthermore, by providing an inward portion 113c on the groove wall surface of the sliding groove 113, the deflection amount of the pusher 41 is effectively limited when it deflects on the plane formed by the X-axis and Y-axis. This improves the certainty of the movement direction of the pusher 41 and constrains the degree of freedom of the pusher 41 in other directions. This makes the pusher less prone to displacement or deformation when subjected to impacts in uncertain directions, thereby improving the reliability of the relay 1.

[0295] In this embodiment, the dimension of the sliding mating part 411 along the X-axis is larger than the thickness of the base 410 along the X-axis. This makes it easier for the sliding mating part 411 and the groove 113 to have the same clearance, making it less likely for the pusher 41 to deviate along the X-axis and cause jamming. It also changes the contact point with the moving spring 310 to prevent the stroke of the moving contact 311 from deviating from the design purpose, ensuring the distance between the moving contact 311 and the stationary contact 320, thereby ensuring the voltage withstand capability of the relay 1.

[0296] In this embodiment, the arc surface of the part of the sliding mating part 411 that extends into the slide groove 113 is provided with an inner recess 411a, so that the contact surface between the sliding mating part 411 and the groove wall surface of the slide groove 113 is smaller, making it less prone to friction or jamming, and the sliding is smoother.

[0297] In this embodiment, the third load terminal 33c is located below the sliding engagement portion 411, which helps to increase the current-carrying area of ​​the third load terminal 33c as the common terminal 330, thereby achieving a greater load-bearing capacity and reducing heat generation. The first intersection point 229 is located above the rotation axis Q, that is, the swing portion 225 is offset upward relative to the main body 223, making it less likely for the sliding engagement portion 411 to interfere with the load terminal 33 located below it. The movement stroke of the pusher 41 is more easily guaranteed, which can increase the distance between the moving contact 311 and the stationary contact 320 and enhance the pressure resistance.

[0298] In this embodiment, all positions where the pusher 41 contacts the swing portion 225 are closer to the rotation axis Q in the X-axis direction than the second mating hole 413 (i.e., the position where the pusher 41 contacts the moving spring assembly 31). This is beneficial to reduce the travel of the pusher 41 in the Z-axis direction while ensuring the distance between the moving contact 311 and the stationary contact 320. In particular, it is beneficial to lower the highest point of the travel of the pusher 41, so that the highest point does not exceed the highest point of the coil assembly 210. Therefore, it is beneficial to save the height of the relay 1 in the Z-axis direction.

[0299] In this embodiment, the first mating hole 412 is provided with a first abutting part 414 and a second abutting part 415 on both sides along the Z-axis direction, respectively, which are suitable for abutting against the swing part 225. The first abutting part 414 and the second abutting part 415 are both turned outward from the hole wall of the first mating hole 412 along the X-axis direction, so that the contact point between the swing part 225 and the pusher 41 can move along the outward turning method, which is beneficial to reduce the scraping between the swing part 225 and the metal pusher 41 or the base 410 of the pusher 41.

[0300] In this embodiment, by providing a first abutment portion 414 and a second abutment portion 415 that are outwardly flared along the X-axis, it is beneficial to make the pushing member 41 thinner and to ensure that it always correctly abuts against the swing portion 25. This is beneficial for miniaturizing the relay 1 and also ensures that the swing portion 225 always abuts against the second abutment portion 415 at its lowest point. This ensures that when the moving contact 311 contacts the stationary contact 320, and the pushing member 41 enters the overtravel phase through the elastic member 313, the overtravel distance along the movement direction of the pushing member 41 ensures that the moving contact always reliably presses against the stationary contact. The surfaces of the first abutment portion 414 and the second abutment portion 415 that are suitable for contacting the swing portion 225 are both smooth curved surfaces, resulting in a lower coefficient of friction between the pushing member 41 and the swing portion 225 and a longer lifespan for the swing portion 225.

[0301] In this embodiment, the surfaces of the first contact portion 414 and the second contact portion 415 that are adapted to contact the swing portion 225 are both smooth curved surfaces, resulting in a smaller coefficient of friction between the pusher 41 and the swing portion 225 and a longer lifespan for the swing portion 225.

[0302] In this embodiment, the pusher 41 is bent between the first abutment portion 414 and the second abutment portion 415, which reduces the size of the pusher 41 along the Z-axis, making it more advantageous to achieve the above-mentioned functions when the space in the Z-axis direction is small. In particular, when the swing portion 225 is offset upward relative to the main body 223, the distance along the X-axis between the swing portion 225 swinging upward to the highest point and swinging downward to the lowest point will increase. The bending of the pusher 41 between the first abutment portion 414 and the second abutment portion 415 facilitates that the swing portion 225 can correctly abut with the first abutment portion 414 and the second abutment portion 415 when swinging upward to the highest point and downward to the lowest point, so that the moving contact 311 can correctly close or open with the stationary contact 320.

[0303] In this embodiment, when the pusher 41 bends between the first abutment portion 414 and the second abutment portion 415, the outward turning directions of the first abutment portion 414 and the second abutment portion 415 are opposite to each other. This helps to bring the contact points between the swing portion 225 and the first abutment portion 414 and the second abutment portion 415 closer along the X-axis direction, thus avoiding a large reciprocating force on the pusher 41 along the X-axis direction when the swing portion 225 drives the pusher 41 to move.

[0304] In this embodiment, the magnetic circuit portion 20, the contact portion 30, and the pushing portion 40 are all mounted on the base 11. With the base 11 as a reference, the movement relationship between them is more precise. Encapsulation is achieved by covering the base 11 with a cover along the Z-axis, making assembly simpler.

[0305] In this embodiment, the support member 230 not only engages with the protrusion 217 of the magnetic drive end 216 along the Y-axis, but also engages with the slot 113 of the housing 10 along the Z-axis. The freedom of the support member 230 is completely restricted, which is more conducive to supporting the armature assembly 220, so that the rotation axis Q of the armature assembly 220 will not move along the X-axis. Furthermore, when the relay 1 is impacted, the massive armature assembly 220 can transmit the impact force to the support member 230 through the convex shaft 224, and the support member 230 then transmits the force to the housing 10, making it difficult for the components to undergo relative displacement.

[0306] In this embodiment, since the swing part 225 and the moving spring assembly 31 are respectively inserted into the first mating hole 413 and the second mating hole 413 on the pusher 41 in a generally opposite direction, the base 11 is divided into a first seat body 110 and a second seat body 120. The first seat body 110 forms a first assembly 51 with the magnetic circuit part 20 and the pusher part 40, and the second seat body 120 forms a second assembly 51 with the contact part 30. The first assembly 51 and the second assembly 52 are inserted into each other along the X-axis direction, so that the moving spring assembly 31 is inserted into the second mating hole 413 along the X-axis direction during the insertion process. This makes the relay 1 under the configuration of this disclosure easier to assemble and avoids the swing part 225 and the moving spring assembly 31 from being inserted into the pusher 41 in opposite directions at the same time.

[0307] In this embodiment, the first locking block 118 and the second locking block 126 engage with each other, so that the first assembly 51 and the second assembly 52 will not separate from each other along the X-axis before being fixed to the cover.

[0308] In this embodiment, the load terminal 33 is positioned and engaged with the first limiting block 115 and the second limiting block 116 along the Z-axis, thereby fixing the first assembly 51 and the second assembly 52 relative to each other along the Z-axis. The load terminal 33 is inserted between the first limiting block 115 and the second limiting block 116 along the X-axis, which increases the current-carrying area of ​​the load terminal 33 and improves its load capacity.

[0309] In this embodiment, the load terminal 33 is clearance-fitted with the first limiting block 115 and the second limiting block 116 along the Z-axis, and the length of the second limiting block 116 fitting with the load terminal 33 along the X-axis is less than the length of the first limiting block 115 fitting with the load terminal 33 along the X-axis. This facilitates the second assembly 52, which is away from the first assembly 51 along the X-axis, to deflect downward relative to the first assembly 51, causing the second locking block 126 to disengage from the first locking block 118, thereby enabling quick disassembly of the first assembly 51 and the second assembly 52. ​​Simultaneously, because the length of the first limiting block 115 fitting with the load terminal along the X-axis is larger, the parts where the second assembly 52 and the first assembly 51 intersect are less likely to sink due to downward impact forces along the Z-axis, preventing these intersect parts from becoming weak points after the relay 1 is assembled.

[0310] In this embodiment, the insert block 122 and the corresponding two second limiting blocks 116 are limited and engaged along the Y-axis direction, so that the first assembly 51 and the second assembly 52 are fixed relative to each other along the Y-axis direction.

[0311] In this embodiment, the first locking block 118 is located on the side of the second limiting block 116, and the second locking block 126 is located on the side of the insertion block 122, so that the connection strength between the first locking block 118 and the second locking block 126 is greater and it is less likely to disengage.

[0312] In this embodiment, the part of the pusher 41 that is adapted to contact the moving spring assembly 31 is made of metal. In other embodiments, the part of the pusher 41 that is adapted to contact and push the moving contact 311 and the stationary contact 320 of the moving spring 310 to close is made of metal. Therefore, when the external current load is large and the moving spring assembly 31 generates a lot of heat, compared with the technical solution of using plastic material for the part that contacts the moving spring assembly 31, it can avoid the situation where the pusher 41 softens or even melts due to the heat of the moving spring assembly 31, causing the closing stroke of the moving spring assembly 31 to be inconsistent with the design, resulting in a decrease in the load capacity of the relay 1. Therefore, the load capacity and reliability of the relay 1 are improved.

[0313] In this embodiment, the part of the pusher 41 that contacts the moving spring assembly 31 and the part that contacts the armature assembly 220 are both formed on the base 410. The base 410 is made of metal, which can also prevent the pusher 41 from softening or even melting due to the heat generated by the moving spring assembly 31.

[0314] In this embodiment, the sliding engagement part 411 slides into the housing 10, which can improve the certainty of the movement direction of the pusher 41 and constrain the degree of freedom of the pusher 41 in other directions, making the pusher less prone to displacement or deformation when subjected to impacts in uncertain directions, thereby improving the reliability of the relay 1.

[0315] In this embodiment, the sliding mating part 411 is made of plastic, which makes it easier to slide and fit with the housing 10, which is also made of plastic, and is less likely to produce scratches that could cause jamming or misalignment. The sliding mating part 411 and the insert of the base 410 are integrally injection molded, resulting in higher dimensional accuracy and smaller dimensional tolerances.

[0316] In this embodiment, when the substrate 41 is a stainless steel sheet metal part, it is easier to process and form, the structure is simpler, the strength is higher, and it is more conducive to miniaturization design; when the substrate 41 is an aluminum casting or an aluminum alloy casting, it is easier to process and form, the density is lower, the strength is higher, and the cost is lower.

[0317] In this embodiment, the other two load terminals 33, except for the common terminal 330, are arranged along the Y-axis direction, which is consistent with the arrangement direction of each moving spring assembly 31, making it easier to connect with the moving spring assembly 31.

[0318] In this embodiment, the portion of the common terminal 330 extending downwards is located in the middle of the base 11 along the Y-axis direction, resulting in higher space utilization.

[0319] In this embodiment, each load terminal 33 is provided with a connection portion 331 perpendicular to the Z-axis direction, allowing the load terminals 33 to be laid flat along the X and Y axes. This not only reduces the height of the relay 1 along the Z-axis direction but also increases the current-carrying area of ​​the load terminals 33, thereby improving the load capacity of the relay 1. This is particularly suitable for applications in high-current environments, such as those with a load current of 80A. Furthermore, by providing a common terminal 330, the relay 1 can achieve a more compact structure and occupy less space while meeting the requirements of multi-channel control in high-current environments.

[0320] In this embodiment, by arranging the connection portion 331 of the three load terminals 33 in two layers along the Z-axis direction, all switches 34 are located between the two layers of connection portion 331, which helps to reduce the height of the relay 1 along the Z-axis direction and make full use of the space in the X-axis and Y-axis directions.

[0321] In this embodiment, the connection portion 331 of the common terminal 330 is provided with a first arm 332 and a second arm 333 that extend away from each other along the X-axis direction and are respectively provided for two magnetic circuit units, so that the common terminal 330 has a larger current-carrying area when occupying one of the two layers along the Z-axis direction.

[0322] In this embodiment, the connection portion 331 of the two other load terminals 33 is farther away from the magnetic circuit portion along the X-axis direction than the first arm and the second arm. Therefore, the three load terminals 33 use less material, have lower cost, and have a more compact structure.

[0323] In this embodiment, the assembly method of the relay 1 can prevent the swing part 225 and the moving spring assembly 31 from being simultaneously inserted into the pusher 41 in opposite directions.

[0324] In this embodiment, the magnetic circuit unit 21 is assembled first, and then the magnetic circuit unit 21 and the corresponding pusher 41 are installed to the first base 110 along the Z-axis direction. When the magnetic circuit part 20 and the pusher part 40 are separately assembled to the first base 110, the assembly is mainly carried out along the Z-axis direction, making the assembly process simpler.

[0325] Example 2

[0326] Referring to Figure 25, which shows the pusher 41 in Embodiment 2. As shown in Figure 25, in this embodiment, the pusher 41 also has a base 410 and two sliding mating parts 411. The entire pusher 41 is made of metal, specifically stainless steel sheet metal, aluminum casting, or aluminum alloy casting. In this embodiment, aluminum casting is used. Since the sliding mating parts 411 are made of metal, correspondingly, the inner wall of the groove 113 that contacts the sliding mating parts 411 can also be made of metal to avoid scratching.

[0327] In this embodiment, the pusher 41 is made entirely of metal, which is stronger and less susceptible to the heat generated by the moving spring assembly.

[0328] In this embodiment, when the pusher 41 is a stainless steel sheet metal part, it is easier to process and form, the structure is simpler, the strength is higher, and it is more conducive to miniaturization design; when the pusher is an aluminum casting or an aluminum alloy casting, it is easier to process and form, the density is lower, the strength is higher, and the cost is lower.

[0329] The other parts of this embodiment are the same as those in Embodiment 1, and will not be described again.

[0330] Example 3

[0331] Referring to Figures 26 and 27, which show the internal structure of relay 1 in Embodiment 3. As shown in Figures 26 and 27, the main difference between this embodiment and Embodiment 1 is that the base 11 in this embodiment is no longer divided into a first base 110 and a second base 120, but is integrated. The end of the base 11 away from each load terminal 33 along the X-axis direction is provided with a plug-in groove extending along the X-axis direction, and the base 11 no longer has a slot 112. During assembly, the base 11, the contact part 30, and the pushing part 40 together form a third assembly 53. In each magnetic circuit unit 21, the connecting hole 231 of the support member 230 is interference-fitted with the corresponding protrusion 217. When each magnetic circuit unit 21 is assembled into the third assembly 53, the coil frame 211 of each magnetic circuit unit 21 is plugged into the plug-in groove on the base 11 along the X-axis direction. After each magnetic circuit unit 21 is plugged into place, the swing part 225 extends into the first mating hole 412 away from the rotation axis Q. After insertion, the third assembly 53 and each magnetic circuit unit 21 are positioned and engaged along the Z-axis and Y-axis directions. Then, the cover is placed on the base 11 and each magnetic circuit unit 21, so that the cover surrounds each coil frame 211 along the X-axis direction. This prevents the magnetic circuit unit 21 from detaching from the third assembly 53 through the base 11 and the cover along the X-axis direction.

[0332] The assembly method in this embodiment is another assembly method for the relay 1 in this configuration. The magnetic circuit unit 21 is inserted into the base 11 along the X-axis, allowing the swing part 225 to extend into the first mating hole away from the rotation axis Q. This also prevents the swing part 225 and the moving spring assembly 31 from simultaneously inserting into the pusher 41 in opposite directions. In this case, the coil terminal 211 no longer penetrates the base 11, but only the coil frame 211. When the cover is fixed to the base 11, the cover surrounds the coil frame 211 along the X-axis, preventing the coil frame 211 from detaching from the third assembly 53 along the X-axis.

[0333] In this embodiment, the support member 230 and the protrusion 217 are interference-fitted to prevent the support member 230 from being assembled to the base 11 along the Z-axis direction, so that the entire magnetic circuit unit 21 can be smoothly installed to the third assembly 53 along the X-axis direction.

[0334] The other parts of this embodiment are the same as those in Embodiment 1, and will not be described again.

[0335] Example 4

[0336] Referring to Figure 28, which shows the relay 1 in Embodiment 4. As shown in Figure 28, this embodiment differs from Embodiment 1 in that the base 11 includes a third base 130 and a fourth base 140. The coil assembly 210 is fixed to the third base 130 along the Z-axis direction, and each coil terminal 213 passes through the third base 130 along the Z-axis direction. A slot 112 is disposed in the third base 130. A slide 113 is disposed in the fourth base 140, and each load terminal 33 passes through the fourth base 140 along the Z-axis direction. The third seat 130 and the magnetic circuit portion 20 together form the fourth assembly 54. The fourth seat 140, the pushing portion 40, and the contact portion 30 together form the fifth assembly 55. The fourth assembly 54 and the fifth assembly 55 are inserted into each other along the X-axis. After insertion, the swing portion 225 extends into the first mating hole 412 along the X-axis. The third seat 130 and the fourth seat 140 are engaged along the X-axis, and the fourth assembly 54 and the fifth assembly 55 are mutually limited in their engagement along the Y-axis and Z-axis. The specific engagement and limiting engagement methods can be the same as in Embodiment 1.

[0337] This embodiment provides another assembly method based on the relay structure with the same configuration as Embodiment 1, which can also avoid the swing part 225 and the moving spring assembly 31 from being simultaneously inserted into the pusher 41 in opposite directions.

[0338] The other parts of this embodiment are the same as those in Embodiment 1, and will not be described again.

[0339] Example 5

[0340] Referring to Figure 29, which shows the relay 1 in Embodiment 5. As shown in Figure 29, this embodiment differs from Embodiment 1 in that the base 11 includes a fifth base 150, a sixth base 160, and a seventh base 170. The coil assembly 210 is fixed to the fifth base 150 along the Z-axis direction, and each coil terminal 213 passes through the fifth base 150 along the Z-axis direction. A slot 112 is disposed in the fifth base 150. A slide 113 is disposed in the sixth base 160. Each load terminal 33 passes through the seventh base 170 along the Z-axis direction. The fifth base 150 and the magnetic circuit portion 20 together form a sixth assembly 56; the sixth base 160 and the pushing portion 40 together form a seventh assembly 57; and the seventh base 170 and the magnetic circuit portion 30 together form an eighth assembly 58. The sixth assembly 56, the seventh assembly 57, and the eighth assembly 58 are inserted along the X-axis. After insertion, the moving spring assembly 31 extends into the second mating hole 415 along the X-axis, and the swing part 225 extends into the first mating hole 414 along the X-axis. The fifth seat 150 and the sixth seat 160 are engaged, and the sixth assembly 56 and the seventh assembly 57 are mutually restrained along the Y-axis and Z-axis. The sixth seat 160 and the seventh seat 170 are engaged, and the seventh assembly 57 and the eighth assembly 58 are mutually restrained along the Y-axis and Z-axis. In this embodiment, the insertion engagement can be concentrated between the fifth seat 150 and the sixth seat 160, and between the sixth seat 160 and the seventh seat 170. The engagement method can be the same as in Embodiment 1.

[0341] This embodiment provides another assembly method based on the relay structure with the same configuration as Embodiment 1, which can also avoid the swing part 225 and the moving spring assembly 31 from being simultaneously inserted into the pusher 41 in opposite directions.

[0342] Example 6

[0343] Referring to Figures 30 and 31, Figure 30 shows the contact portion 30 of relay 1 in Embodiment 6, and Figure 31 shows a schematic diagram of the electrical structure of relay 1 in Embodiment 7. As shown in Figure 30, in this embodiment, the first load terminal 33a is connected to the first moving spring assembly 31a, the second load terminal 33b is connected to the second stationary contact assembly 32b, the first arm 322 of the third load terminal 33c is connected to the first stationary contact assembly 32a, and the second arm 333 of the third load terminal 33c is connected to the second moving spring assembly 31b, thereby forming a common terminal 330 for the third load terminal 33c. The connecting portion 331 of the third load terminal 33c as the common terminal 330 is located below the connecting portions 331 of the other two load terminals 33 along the Z-axis direction, and the connecting portions 331 of the other two load terminals 33 are located on the same plane along the Z-axis direction. The first arm 332 connecting the first stationary contact assembly 32a is closer to the magnetic circuit portion 20 along the X-axis direction than the second arm 333 connecting the second moving spring assembly 31b. In this embodiment, for the third load terminal 33c, the moving contact group 31c of the first moving spring group 31a closes with the first stationary contact group 32a downward along the Z-axis direction and disconnects from the first stationary contact group 32a upward along the Z-axis direction. The moving contact group 31d of the second moving spring group 31b closes with the second stationary contact group 32b upward along the Z-axis direction and disconnects from the second stationary contact group 32b downward along the Z-axis direction.

[0344] In this embodiment, at least one load terminal 33 is simultaneously connected to the moving spring assembly 31 in at least one switch 34 and the stationary contact assembly 32 in at least one switch 34 to form a common terminal 330. The other switches are defined as switches whose moving spring assemblies are not connected to the common terminal. Specifically, as shown in Figure 23, the first magnetic circuit unit 21a controls the first switch 34a through the first pusher 41a. The first moving spring group 31a in the first switch 34a is connected to the first load terminal 33a, and the first stationary contact group 32a in the first switch 34a is connected to the third load terminal 33c, so that the first switch 34a can independently control the on / off state between the first load terminal 33a and the third load terminal 33c. The second magnetic circuit unit 21b controls the second switch 34b through the second pusher 41b. The second moving spring group 31b in the second switch 34b is connected to the third load terminal 33c, and the second stationary contact group 32b in the second switch 34b is connected to the second load terminal 33b, so that the second switch 34b can independently control the on / off state between the third load terminal 33c and the second load terminal 33b.

[0345] The other parts of this embodiment are the same as those in Embodiment 1, and will not be repeated here.

[0346] Example 7

[0347] Referring to Figures 32 and 33, Figure 32 shows the internal structure of relay 1 in Embodiment 7, and Figure 33 shows the electrical structure diagram of relay 1 in Embodiment 7.

[0348] In this embodiment, the base 11 (not shown in the figure) is no longer divided into a first base 110 and a second base 120, but is integrated into one unit.

[0349] As shown in Figure 32, in this embodiment, the pushing part 225 extends from the main body 223 parallel to the extending direction of the armature 222. In this embodiment, at least one load terminal 33 is simultaneously connected to at least two moving spring assemblies 31 to form a common terminal 330. Specifically, the first load terminal 33a is connected to the first stationary contact assembly 32a, the second load terminal 33b is connected to the second stationary contact assembly 32b, and the third load terminal 33c is connected to the first moving spring assembly 31a and the second moving spring assembly 31b to form a common terminal.

[0350] As shown in Figure 32, in this embodiment, the first moving spring group 31a and the second moving spring group 31b both extend along the Z-axis direction and are opposite to the corresponding stationary contact group 32 along the X-axis direction.

[0351] As shown in Figure 32, in this embodiment, the pusher 41 moves along the X-axis. Specifically, the pusher 225 is inserted into the first mounting hole 412 along the Z-axis, and each moving spring assembly 31 is inserted into the second mounting hole 413 along the Z-axis.

[0352] As shown in Figure 32, the swinging part 225 swings away from the rotation axis Q along the X-axis, causing the pushing member 41 to move away from the rotation axis Q along the X-axis, thereby causing the moving contact group 314 in the moving spring group 31 to close with the corresponding stationary contact group 32. Correspondingly, the swinging part 225 swings closer to the rotation axis Q along the X-axis, causing the pushing member 41 to move closer to the rotation axis Q along the X-axis, thereby causing the moving contact group 314 in the moving spring group 31 to disconnect from the corresponding stationary contact group 32.

[0353] As shown in Figure 33, the first magnetic circuit unit 21a controls the first switch 34a through the first pusher 41a. The first moving spring group 31a in the first switch 34a is connected to the third load terminal 33c, and the first stationary contact group 32a in the first switch 34a is connected to the first load terminal 33a, so that the first switch 34a can independently control the on / off state between the first load terminal 33a and the third load terminal 33c. The second magnetic circuit unit 21b controls the second switch 34b through the second pusher 41b. The second moving spring group 31b in the second switch 34b is connected to the third load terminal 33c, and the second stationary contact group 32b in the second switch 34b is connected to the second load terminal 33b, so that the second switch 34b can independently control the on / off state between the third load terminal 33c and the second load terminal 33b.

[0354] In this embodiment, the pusher 41 moves along the X-axis, causing the moving spring assembly 31 to extend along the Z-axis. This reduces the overall board area (projected area along the Z-axis) of the relay 1, allowing for higher electrical density on the circuit board without strict limitations on the height of the relay 1. Furthermore, since both the moving spring assembly 31 and the swinging part 225 engage with the pusher 41 along the Z-axis, the assembly of the relay 1 in this embodiment is simpler. Guiding the pusher 41 can be achieved through a hook structure between the swinging part 225 and the moving spring assembly 31, or by adding a pressure block to the cover.

[0355] The other parts of this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0356] Example 8

[0357] See Figures 34 and 35. Figure 34 shows the internal structure of relay 1 in embodiment eight, and Figure 35 shows the electrical structure of relay 1 in embodiment seven.

[0358] The parts of this embodiment that are the same as those in Embodiment 7 will not be repeated. The following describes the parts of Embodiment 8 that differ from those in Embodiment 7.

[0359] As shown in Figure 34, in this embodiment, the first load terminal 33a is connected to the first moving spring assembly 31a, the second load terminal 33b is connected to the second stationary contact assembly 32b, and the third load terminal 33c is connected to the first stationary contact assembly 32a (not shown in the figure) and the second moving spring assembly 31b to form a common terminal 330. Furthermore, in this embodiment, the closing direction of the first moving spring assembly 31a and the first stationary contact assembly 32a (not shown in the figure) and the closing direction of the second moving spring assembly 31b and the second stationary contact assembly 32b are both in the X-axis direction, but opposite to each other.

[0360] As shown in Figure 35, the first magnetic circuit unit 21a controls the first switch 34a through the first pusher 41a. The first moving spring group 31a in the first switch 34a is connected to the first load terminal 33a, and the first stationary contact group 32a in the first switch 34a is connected to the third load terminal 33c, so that the first switch 34a can independently control the on / off state between the first load terminal 33a and the third load terminal 33c. The second magnetic circuit unit 21b controls the second switch 34b through the second pusher 41b. The second moving spring group 31b in the second switch 34b is connected to the third load terminal 33c, and the second stationary contact group 32b in the second switch 34b is connected to the second load terminal 33b, so that the second switch 34b can independently control the on / off state between the third load terminal 33c and the second load terminal 33b.

[0361] The other parts of this embodiment are the same as those in Embodiment 1, and will not be described again.

[0362] The description of the above specification and embodiments is used to explain the scope of protection of this disclosure, but does not constitute a limitation on the scope of protection of this disclosure.

Claims

1. A relay, characterized in that its include: A housing, which includes a base; The magnetic circuit section includes the armature assembly; The contact portion includes a movable spring; and A pusher component moves relative to the base, the motion of the pusher component having at least a component along the Z-axis direction; the armature assembly and the movable spring cooperate with each other relative to the pusher component along the X-axis direction, so that the armature assembly drives the movable spring to move through the pusher component, wherein the X-axis direction is perpendicular to the Z-axis direction. The relay is divided into at least two units, with the magnetic circuit part and the contact part located in different units. Each unit is plugged in and fixed relative to the other along the X-axis.

2. The relay as described in claim 1, characterized in that: The housing also includes a cover, which is disposed on the base and fixedly connected to the base; The magnetic circuit section further includes a coil assembly, which is fixed relative to the base and adapted to drive the armature assembly to rotate about a rotation axis extending along the Y-axis direction. The armature assembly is provided with a swinging part adapted to cooperate with the pusher. The coil assembly includes a coil frame, wherein the Z-axis direction is perpendicular to the X-axis direction and the Z-axis direction. The contact portion also includes a stationary contact and at least two load terminals. The moving spring is provided with a moving contact. The moving contact is closed or opened with the stationary contact along the Z-axis direction. Each load terminal is fixed relative to the base and is respectively connected to the moving spring and the stationary contact. The pusher is mounted on the base and moves along the Z-axis.

3. The relay as described in claim 2, characterized in that: The pusher is provided with a first mating hole for the swinging part to extend into and a second mating hole for the moving spring to extend into. The direction in which the swinging part extends into the first mating hole is opposite to the direction in which the moving spring extends into the second mating hole.

4. The relay as described in claim 2, characterized in that, The base is provided with a sliding groove, and the pusher slides in cooperation with the sliding groove along the Z-axis.

5. The relay as described in claim 3, characterized in that, The base includes a first base and a second base. The magnetic circuit portion and the pusher are installed on the first base and together form a first assembly. The contact portion is installed on the second base and together form a second assembly. After the first assembly and the second assembly are inserted into place, the moving spring extends into the second mating hole along the X-axis direction. The first base and the second base are engaged along the X-axis direction, and the first assembly and the second assembly are mutually limited and engaged along the Y-axis direction and the Z-axis direction.

6. The relay as described in claim 5, characterized in that, The first base body is provided with a first limiting block, a second limiting block, and a first locking block along the X-axis direction toward the second base body. The second base body is provided with a second locking block along the X-axis direction toward the first base body. The first limiting block is located above the second limiting block along the Z-axis direction. After the first assembly and the second assembly are inserted into place along the X-axis direction, the first locking block and the second locking block engage with each other along the X-axis direction. At least one of the load terminals is inserted between the first limiting block and the second limiting block along the X-axis direction and engages with the first limiting block and the second limiting block along the Z-axis direction.

7. The relay as claimed in claim 6, characterized in that, The load terminal is clearance-fitted with the first limiting block and the second limiting block along the Z-axis. The length of the second limiting block fitting with the load terminal along the X-axis is less than the length of the first limiting block fitting with the load terminal along the X-axis. This allows the end of the second assembly away from the first assembly along the X-axis to be allowed to deflect downward relative to the first assembly when the first assembly or the second assembly is subjected to a downward force along the Z-axis until the second locking block disengages from the first locking block along the X-axis.

8. The relay as claimed in claim 6, characterized in that, The number of the second limiting blocks is at least two, and each second limiting block is arranged along the Y-axis direction. At least two adjacent second limiting blocks form a first gap along the Y-axis direction. The second base is provided with an insert block suitable for extending into the first gap along the X-axis direction. After the second assembly and the first assembly are inserted into place along the X-axis direction, the insert block and the corresponding two second limiting blocks are limited and engaged along the Y-axis direction. The two second limiting blocks that form the first gap between each other are provided with the first locking block on their adjacent side. The insert block is provided with a second locking block corresponding to the first locking block on both sides along the Y-axis direction.

9. The relay as claimed in claim 5, characterized in that, The pusher includes a base and two sliding mating parts. The first mating hole and the second mating hole are both formed in the base. The two sliding mating parts are fixed to both sides of the base along the Y-axis direction. The first base is provided with a sliding groove that slides with the two sliding mating parts along the Z-axis direction.

10. The relay as claimed in claim 5, characterized in that, The coil assembly includes a coil frame, a coil winding, and coil terminals. The coil winding is wound around the coil frame, and the winding axis of the coil winding extends along the Z-axis. The coil terminals are electrically connected to the coil winding and penetrate downward along the Z-axis through the coil frame and the first base. The magnetic circuit portion corresponding to the armature assembly also includes two support members. The two support members are fixed relative to the coil assembly and support the armature assembly. The first base has slots for the two support members to be inserted along the Z-axis. The coil assembly has two magnetic drive ends arranged along the Z-axis. The two magnetic drive ends drive the armature assembly to rotate by changing their polarity. Each magnetic drive end has protrusions on both sides along the Y-axis. Each support member has two connecting holes along the Z-axis that are corresponding to the two protrusions on the same side along the Y-axis and are inserted into each other. The contact portion also includes at least two load terminals. Each load terminal is fixedly connected to a moving spring and a stationary contact, respectively. Each load terminal penetrates downward along the Z-axis through the second base and is fixedly connected to the second base.

11. The relay as claimed in claim 3, characterized in that, The base, the contact part, and the pushing part together form a third assembly. The magnetic circuit part is inserted into the base along the X-axis. After being inserted into place, the swing part extends into the first mating hole along the X-axis. The cover is arranged around the coil frame along the X-axis to prevent the magnetic circuit part from detaching from the third assembly along the X-axis.

12. The relay as claimed in claim 3, characterized in that, The base includes a third body and a fourth body. The magnetic circuit portion is installed on the third body and together form a fourth assembly. The pushing member and the contact portion are installed on the fourth body and together form a fifth assembly. After the fourth assembly and the fifth assembly are inserted into place, the swing portion extends into the first mating hole along the X-axis direction. The third body and the fourth body are engaged along the X-axis direction, and the fourth assembly and the fifth assembly are mutually limited and engaged along the Y-axis direction and the Z-axis direction.

13. The relay as claimed in claim 3, characterized in that, The base includes a fifth, a sixth, and a seventh seat. The magnetic circuit portion is installed on the fifth seat and together form a sixth assembly. The pushing member is installed on the sixth seat and together form a seventh assembly. The contact portion is installed on the seventh seat and together form an eighth assembly. The sixth, seventh, and eighth assemblies are inserted along the X-axis. After being inserted into place, the moving spring extends into the second mating hole along the X-axis, and the swinging part extends into the first mating hole along the X-axis. The fifth and sixth seats are engaged, and the sixth and seventh assemblies are mutually limited in their Y-axis and Z-axis directions.

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