relay

Abstract

The application discloses a relay, comprising a magnetic circuit driving part, the magnetic circuit driving part comprising a coil assembly and an armature assembly, the coil assembly comprising a yoke; the coil assembly is configured to reverse the polarity temporarily formed by the yoke in response to an input signal, and then drive the armature assembly to move linearly relative to the coil assembly; wherein the linear motion of the armature assembly is guided by a guide structure, at least part of the guide structure being arranged on the yoke.

Description

Technical Field

[0001] This application relates to the field of electrical control device technology, and more specifically, to a relay. Background Technology

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is commonly used in automatic control circuits. Essentially, a relay is an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits.

[0003] A magnetic latching relay, as one type of relay, includes a contact portion, an armature assembly, and a coil assembly. The armature assembly is electromagnetically coupled to the coil assembly. The coil assembly is configured to drive the armature assembly to move in response to an input signal, so that the armature assembly drives the contact portion to switch from a closed state to an open state and from an open state to a closed state.

[0004] However, the movement trajectory of the armature assembly in the related technology is prone to deviation, which in turn affects the contact reliability between the moving and stationary contacts of the contact part. Utility Model Content

[0005] This application provides a relay to solve the problems of easy deviation in the movement trajectory of the armature assembly and easy jamming during movement in the related art.

[0006] The relay in this application embodiment includes: The magnetic circuit drive section includes a coil assembly and an armature assembly, the coil assembly including a yoke; the coil assembly is configured to reverse the polarity temporarily formed by the yoke in response to an input signal, thereby driving the armature assembly to move linearly relative to the coil assembly. The linear motion of the armature assembly is guided by a guide structure, at least a portion of which is located on the yoke.

[0007] According to some embodiments of this application, the yoke is provided with a magnetic drive portion with a magnetic pole face, and at least one of the magnetic drive portions is provided with at least a portion of the guide structure; the armature assembly is provided with an attraction group; the attraction group includes an attraction portion adapted to engage with the magnetic drive portion; At least one of the suction assemblies is provided with a guide portion, which is guided and engaged with the guide structure.

[0008] According to some embodiments of this application, one of the guide portion and the guide structure is a rod-shaped structure extending along the linear movement direction of the armature assembly, and the other is a guide hole or guide groove, wherein the rod-shaped structure is movably inserted into the guide hole or the guide groove.

[0009] According to some embodiments of this application, the number of the guide portion and the corresponding guide structure is at least two; and / or, The coil assembly includes two yokes; the number of guide structures is two and they are respectively arranged corresponding to the two yokes; the armature assembly is provided with the attraction group at the position of the magnetic drive part corresponding to the two yokes, and the two attraction groups are provided with the guide part; the two guide parts are respectively guided and engaged with the two guide structures.

[0010] According to some embodiments of this application, both of the guide structures are guide grooves, and the openings of the two guide grooves are arranged facing each other or back to back; the side of the two guide grooves away from their respective openings is used to guide and cooperate with the two guide parts respectively.

[0011] According to some embodiments of this application, the attraction group includes two attraction portions arranged at intervals along the linear movement direction of the armature assembly. The armature assembly includes a first guide member, which is fixed relative to the two attraction portions in the attraction group. Along the linear movement direction of the armature assembly, the portion of the first guide member located between the two attraction portions is the guide portion. The magnetic drive portion is located between the corresponding two attraction portions.

[0012] According to some embodiments of this application, the armature assembly further includes a package; each of the suction portions of the suction assembly extends out of the package; at least a portion of the first guide is injection molded and fixed to the package, and / or the first guide is fixedly inserted into at least one of the suction portions.

[0013] According to some embodiments of this application, the suction part has a socket, and the first guide is inserted into the socket of the two corresponding suction parts.

[0014] According to some embodiments of this application, the first guide member has a rod portion and a stop cap. The rod portion is inserted into the insertion holes of the two suction portions. The stop cap is connected to one axial end of the rod portion and stops on the side surface of one of the suction portions facing away from the other suction portion. The portion of the rod portion located between the two suction portions is the guide portion.

[0015] According to some embodiments of this application, the first guide member has one end with the stop cap encapsulated by the encapsulation member.

[0016] According to some embodiments of this application, the first guide member is made of a metallic material.

[0017] According to some embodiments of this application, the relay further includes a housing and a second guide member, the second guide member being fixedly installed in the housing; the coil assembly is inserted into the housing along the width direction of the yoke, at least one of the magnetic drive portions is opposite to the second guide member along the width direction of the yoke; the magnetic drive portion and the second guide member cooperate on opposite sides along the width direction of the yoke to form the guide structure; the guide structure is the guide hole or the guide groove.

[0018] According to some embodiments of this application, the magnetic drive part and the second guide member are both provided with recesses on the sides facing each other in the width direction of the yoke, the two recesses together form the guide structure, and the guide part is movably located between the two recesses.

[0019] According to some embodiments of this application, the outer casing includes a first housing, a second housing, and a fixing member. The second housing includes a receiving cavity with an opening. The magnetic circuit drive portion is installed in the receiving cavity. The fixing member is located in the receiving cavity and is fixedly connected to the second housing. The first housing is connected to the second housing and covers the opening of the second housing. The second guide member is fixedly connected to the fixing member.

[0020] According to some embodiments of this application, the outer casing includes a first housing and a second housing, the second housing includes a receiving cavity with an opening, the magnetic circuit drive portion is installed in the receiving cavity, the first housing is connected to the second housing and covers the opening of the second housing; The second guide member is fixed to either the first housing or the second housing.

[0021] According to some embodiments of this application, the second guide is made of a metallic material.

[0022] According to some embodiments of this application, the second guide member is a flat sheet structure, and the thickness direction of the second guide member is parallel to the linear movement direction of the armature assembly.

[0023] According to some embodiments of this application, the coil assembly further includes a coil frame, a coil winding, and an iron core. The coil winding is wound around the outer periphery of the coil frame, and the iron core passes through the coil frame and is surrounded by the coil winding. The coil assembly includes two yokes, each fixed to one end of the iron core along its axial direction. One end of each yoke extends toward the same side of the coil assembly and forms a magnetic drive portion. The two magnetic drive portions are arranged in a direction parallel to the axial direction of the coil winding; and / or, The armature assembly has the attraction group at both ends along the direction parallel to the axial direction of the coil winding.

[0024] According to some embodiments of this application, the direction of movement of the armature assembly is perpendicular to the axis of the coil assembly.

[0025] According to some embodiments of this application, the guide portion and / or the guide structure are made of a metallic material.

[0026] According to some embodiments of this application, it also includes a contact portion having a closed state and an open state; The armature assembly is configured to drive the contact portion to switch from the closed state to the open state and from the open state to the closed state. The contact portion includes two contact components, each comprising a movable spring, a stationary contact, a movable contact, and a lead-out terminal. The movable spring has a fixed end and a movable end. The stationary contact is mounted on the fixed end, and the stationary contact, the fixed end, and the lead-out terminal are fixedly connected. The movable contact is mounted on the movable end. The movable end of each movable spring corresponds to the fixed end of the other movable spring, and the two movable ends are located on the same side of the two fixed ends along the linear movement direction of the armature assembly. The armature assembly has two drive arms, which are respectively connected to the two movable ends, and are used to drive the movable ends to move relative to the corresponding fixed ends, so as to cause the moving contact on the movable end to contact or separate from the stationary contact on the corresponding fixed end.

[0027] According to some embodiments of this application, the magnetic circuit drive portion is located on the side of the two movable ends facing away from the two fixed ends.

[0028] According to some embodiments of this application, the moving springs of the two contact assemblies are arranged crosswise, and along the extending direction of the moving springs, the cross region is located between two sets of corresponding moving contacts and stationary contacts; the portions of the cross regions of the two moving springs are spaced apart from each other.

[0029] According to some embodiments of this application, the movable spring also has a curved section, and the fixed end is connected to the movable end through the curved section, so that the movable contact and the stationary contact on the movable spring are staggered in the linear motion direction of the armature assembly, and the two curved sections are arranged crosswise.

[0030] According to some embodiments of this application, the curved segments of the two contact components have notches, the curved segment of each contact component passes through the notch of the other contact component, and the two curved segments do not contact each other.

[0031] According to some embodiments of this application, the fixed ends of the two contact components are arranged in parallel.

[0032] According to some embodiments of this application, the fixed end is flat and the two fixed ends are disposed on the same first plane, the first plane being perpendicular to the linear motion direction of the armature assembly; and / or, the movable end is flat and the two movable springs are located on the same second plane when they are not deformed, the second plane being perpendicular to the linear motion direction of the armature assembly.

[0033] According to some embodiments of this application, the lead-out terminal is a sheet-like structure, and the lead-out terminals of the two contact assemblies are disposed on the same third plane, which is perpendicular to the linear motion direction of the armature assembly.

[0034] An embodiment of the above application has at least the following advantages or beneficial effects: In this embodiment of the relay, the guiding structure guides the linear motion of the armature assembly. When the coil assembly drives the armature assembly to move, the movement trajectory of the armature assembly is more precise, preventing the armature assembly from deviating during reciprocating motion and ensuring the reliability of the contact between the moving and stationary contacts. Furthermore, at least part of the guiding structure is located on the yoke, which serves a dual function of magnetic drive and guiding engagement. Since the armature assembly needs to magnetically engage with the yoke, its relative position to the yoke is easier to determine. Therefore, the armature assembly is directly guided by the yoke, avoiding the influence of assembly errors between components on the guiding engagement accuracy. This improves the accuracy and stability of the yoke's guidance of the armature assembly. Compared to solutions that provide structures for guiding engagement with the housing or other components at other locations on the armature assembly, this reduces the space occupied by the armature assembly, thus facilitating the miniaturization of the relay design. Additionally, since the yoke is made of metal, scraping during the guiding engagement process is easily controlled.

[0035] Furthermore, at least one engaging assembly is provided with a guide portion, which engages with the guide structure. Since the engaging assembly is formed by a rigid magnetically conductive component for magnetic engagement with the magnetic drive unit, the magnetically conductive component usually has strong structural stability. Therefore, placing the guide portion on the engaging assembly can also achieve reliable structural stability, thereby forming a stable and reliable guiding engagement with the guide structure. It is also beneficial to design the armature assembly to be stably and reliably supported on the magnetic drive unit by the guide portion, without the need for support by the housing. That is, the armature assembly can be set to be suspended inside the housing, thereby reducing the frictional resistance and scraping amount between the armature assembly and the housing, reducing the magnetic driving force required for the armature assembly, and thus facilitating the miniaturization design of the relay.

[0036] Furthermore, the yoke, the first conductive element, and the second conductive element are all made of metal, and the three are not prone to generating scrap during reciprocating movement. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0038] Figure 1 The diagram shown is a perspective view of a relay according to the first embodiment of this application.

[0039] Figure 2 The diagram shown is an exploded view of the relay according to the first embodiment of this application.

[0040] Figure 3 What is shown is Figure 2 A three-dimensional schematic diagram of the coil assembly, armature assembly, and second guide component assembled in the diagram.

[0041] Figure 4 The diagram shown is an exploded view of the coil assembly and the armature assembly.

[0042] Figure 5 What is shown is Figure 4 A three-dimensional schematic diagram of the armature assembly without the encapsulation component.

[0043] Figure 6 The diagram shows the second guide member and the yoke forming a guide hole.

[0044] Figure 7 The diagram shown is a three-dimensional representation of the second guide member mounted on the fixed member.

[0045] Figure 8 What is shown is an omission Figure 1 A top view of the first housing and the fixing component.

[0046] Figure 9 The diagram shown is an exploded view of the two moving springs.

[0047] Figure 10 The diagram shown is a magnetic circuit diagram of the armature assembly of the relay in the first embodiment of this application when it is in the magnetic holding state in the first position.

[0048] Figure 11 What is shown is Figure 10 A schematic diagram of the magnetic circuit when the coil winding receives the first pulse electrical signal.

[0049] Figure 12 The diagram shows the magnetic circuit when the armature assembly moves to the second position.

[0050] Figure 13 The diagram shows the magnetic circuit when the armature assembly is in the magnetic holding state in the second position.

[0051] Figure 14 The diagram shows the magnetic circuit when the coil winding receives the second pulse electrical signal.

[0052] Figure 15 The diagram shows the magnetic circuit when the armature assembly moves to the first position.

[0053] Figure 16 The diagram shown is a perspective view of the second guide member of the relay according to the second embodiment of this application disposed on the second housing.

[0054] Figure 17 The diagram shows the coil assembly mounted on Figure 16 A three-dimensional schematic diagram of the second shell.

[0055] Figure 18 The diagram shows along Figure 8 A cross-sectional view along section line AA.

[0056] Figure 19 The diagram shows along Figure 8 A cross-sectional view along the BB section line.

[0057] The reference numerals in the attached figures are explained as follows: 100. Outer shell; 110. First housing; 120. Second housing; 121. Receiving cavity; 130. Fixing member; 140. Second guide member; 200. Contact portion; 210. First contact assembly; 211. First movable spring; 2111. First fixed end; 2112. First movable end; 2113. First bent section; 2114. First notch; 212. First stationary contact; 213. First movable contact; 214. First lead-out terminal; 215. First elastic element; 220. Second contact assembly; 221. Second movable spring; 2211. Second fixed end; 2212. Second movable end; 2213. Second bent section; 2214. Second notch; 222. Second movable contact; 223. Second stationary contact; 224. Second lead-out terminal; 225. Second elastic element; 300. Magnetic circuit drive section; 310. Armature assembly; 3101. Activation group; 310a. Armature; 3102. Activation part; 311. First armature; 3111. First activation part; 3112. Second activation part; 312. Second armature; 3121. Third activation part; 3122. Fourth activation part; 313. First permanent magnet; 314. Second permanent magnet; 315. Package; 3151. Drive arm; 316. First magnetic pole; 17. Second magnetic pole; 318. First guide; 3181. Rod; 3182. Stop cap; 3183. Guide part; 319. Socket; 320. Coil assembly; 321. Coil frame; 322. Coil winding; 323. Iron core; 320b. Yoke; 3201. Magnetic drive part; 324. First yoke; 3241. First magnetic drive part; 325. Second yoke; 3251. Second magnetic drive part; 326. Signal input terminal; 410. Guide structure; 411. Recess. Detailed Implementation

[0058] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0059] For ease of explanation, the terms "X-axis direction," "Y-axis direction," and "Z-axis direction" are used in the specific embodiments of this application. These terms simply refer to a feature having one of these directions being perpendicular to a feature having the other direction; they do not require implementation according to the "X-axis direction," "Y-axis direction," and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction, Y-axis direction, and Z-axis direction are mutually perpendicular.

[0060] It is understood that the terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0061] like Figure 1 and Figure 2As shown, this application embodiment provides a relay, which can be a magnetic latching relay, but is not limited thereto. The relay includes a housing 100, a contact portion 200, and a magnetic circuit drive portion 300, which are disposed within the housing 100. The contact portion 200 has a closed state and an open state, and the magnetic circuit drive portion 300 is configured to drive the contact portion 200 to switch from a closed state to an open state and from an open state to a closed state in response to an input signal.

[0062] In one implementation, such as Figure 2 As shown, the outer casing 100 may include a first casing 110 and a second casing 120, which are connected together to form a hollow cavity for accommodating the contact portion 200 and the magnetic circuit drive portion 300. The shape of the first casing 110 and the second casing 120 after connection can have various embodiments. For example, in the embodiment of this application, the shape of the first casing 110 and the second casing 120 after connection is a hollow cuboid. Of course, in other embodiments, the shape of the first casing 110 and the second casing 120 after connection can also be a hollow cylinder, or other suitable shapes.

[0063] As an example, the second housing 120 includes a receiving cavity 121 with an opening and is cuboid in shape. The contact portion 200 and the magnetic circuit driving portion 300 are installed in the receiving cavity 121 of the second housing 120 through the opening of the second housing 120. The first housing 110 is plate-shaped and is fastened to the opening of the second housing 120 to form a hollow cuboid.

[0064] Of course, in other embodiments, both the first housing 110 and the second housing 120 are cuboid in shape and each has an opening on one side. The opening of the first housing 110 is opposite to the opening of the second housing 120, and the first housing 110 and the second housing 120 are fastened together to form a hollow cavity for accommodating the contact portion 200 and the magnetic circuit drive portion 300.

[0065] like Figure 2 As shown, the outer casing 100 also includes a fixing member 130, which can be disposed within the receiving cavity 121 of the second casing 120 and fixedly connected to the second casing 120, and covers at least a portion of the magnetic circuit drive portion 300. In one embodiment, the fixing member 130 can be inserted into the second casing 120, but is not limited thereto.

[0066] like Figure 2As shown, the magnetic circuit drive section 300 includes an armature assembly 310 and a coil assembly 320. The armature assembly 310 is movably disposed within the second housing 120 and connected to the contact portion 200, used to drive the contact portion 200 to switch from a closed state to an open state and from an open state to a closed state. The coil assembly 320 is fixed within the second housing 120 and electromagnetically coupled to the armature assembly 310, and the coil assembly 320 is configured to drive the armature assembly 310 to linear motion in response to an input signal.

[0067] In one embodiment, the armature assembly 310 can be connected to the contact portion 200 via a push rod.

[0068] Of course, in other embodiments, the armature assembly 310 may also be directly connected to the contact portion 200.

[0069] like Figure 3 and Figure 4 As shown, the coil assembly 320 includes a coil frame 321, a coil winding 322, an iron core 323, two yokes 320b, and three signal input terminals 326. The coil frame 321 has a central hole, through which the iron core 323 passes. The coil winding 322 is wound on the bobbin of the coil frame 321 and connected to the three signal input terminals 326, which are used to receive pulse electrical signals. The two yokes 320b are fixedly connected to both ends of the iron core 323 in the axial direction. One end of each yoke 320b extends toward the same side of the coil winding 322 and forms two magnetic drive portions 3201, each having a magnetic pole face. The two magnetic drive portions 3201 are arranged in a direction parallel to the axial direction of the coil winding 322. For ease of description, the two yokes are defined as the first yoke 324 and the second yoke 325. The first yoke 324 and the second yoke 325 are respectively connected to the two ends of the iron core 323 along the axial direction. The end of the first yoke 324 away from the iron core 323 forms a first magnetic drive portion 3241, and the end of the second yoke 325 away from the iron core 323 forms a second magnetic drive portion 3251. The first magnetic drive portion 3241 and the second magnetic drive portion 3251 are arranged along the axial direction of the iron core 323 and extend close to each other in a direction parallel to the axial direction of the iron core 323. The coil assembly 320 is configured to reverse the polarity temporarily formed by the yoke 320b in response to an input signal, thereby driving the armature assembly 310 to move linearly relative to the coil assembly 320.

[0070] In one embodiment, the direction of movement of the armature assembly 310 is perpendicular to the axis of the coil assembly 320. The axis of the coil assembly 320 is located along the axis of the coil winding 322.

[0071] like Figure 3 and Figure 4As shown, the linear motion of the armature assembly 310 is guided by the guide structure 410, at least a portion of which is located on the yoke 320b.

[0072] In this embodiment of the relay, the guide structure 410 guides the linear motion of the armature assembly 310. When the coil assembly 320 drives the armature assembly 310 to move linearly, the movement trajectory of the armature assembly 310 is more precise, preventing the armature assembly 310 from deflecting during reciprocating motion and ensuring the reliability of the contact between the moving and stationary contacts of the contact portion 200. Furthermore, at least a portion of the guide structure 410 is located on the yoke 320b. Since the armature assembly 310 needs to magnetically engage with the yoke 320b, its relative position with the yoke 320b is easier to determine. Therefore, direct guidance by the yoke 320b avoids the influence of assembly errors between components on the guiding fit accuracy, improving the accuracy and stability of the yoke 320b guiding the armature assembly 310.

[0073] In one embodiment, at least one magnetic drive unit 3201 is provided with at least a portion of the guide structure 410.

[0074] like Figure 4 and Figure 5 As shown, in one example provided in this application embodiment, the armature assembly 310 includes two armatures 310a, two permanent magnets (313, 314), and a package 315. The package 315 connects the two armatures 310a and the two permanent magnets (313, 314) into a single unit. In one embodiment, the package 315 connects the two armatures 310a and the two permanent magnets (313, 314) into a single unit using an injection molding process, but this is not a limitation.

[0075] For ease of explanation, the two armatures are defined as the first armature 311 and the second armature 312, and the two permanent magnets are defined as the first permanent magnet 313 and the second permanent magnet 314.

[0076] The armature assembly 310 is provided with a magnetic engagement group 3101, each magnetic engagement group 3101 including a magnetic engagement part 3102 adapted to engage with the magnetic drive part 3201. At least one engaging assembly 3101 is provided with a guide portion 3183, which is guided and engaged with the guide structure 410. Since the engaging assembly 3101 is formed by a rigid magnetically conductive component for magnetic engagement with the magnetic drive portion 3201, the magnetically conductive component usually has strong structural stability. Therefore, providing the guide portion 3183 on the engaging assembly 3101 can also obtain reliable structural stability, thereby forming a stable and reliable guided engagement with the guide structure 410. It is also beneficial to design the armature assembly 310 to be stably and reliably supported on the magnetic drive portion 3201 by the guide portion 3183, without the need for support by the housing. That is, the armature assembly 310 can be set to be suspended in the housing, thereby reducing the frictional resistance and scraping amount between the armature assembly 310 and the housing, reducing the magnetic driving force required for the armature assembly 310, and thus facilitating the miniaturization design of the relay.

[0077] In one embodiment, the number of guide portions 3183 and corresponding guide structures 410 is at least two. With this configuration, guide portions 3183 and corresponding guide structures 410 also serve to prevent rotation and provide stable support, allowing the armature assembly 310 to be suspended within the housing 100 instead of being supported by the housing 100. This reduces the amount of scraping between the armature assembly 310 and the housing 100 during movement, reduces the driving force required for the armature assembly 310, and facilitates miniaturization of the relay design.

[0078] In one embodiment, the armature assembly 310 has a pull-in assembly 3101 at both ends along the axial direction (X-axis direction) of the coil winding 322.

[0079] In one embodiment, the guide portion 3183 and / or the guide structure 410 are made of a metallic material to improve the problem of chipping during the guiding and mating process.

[0080] like Figure 5 As shown, the first armature 311 has a first attracting portion 3111 and a second attracting portion 3112, and the second armature 312 has a third attracting portion 3121 and a fourth attracting portion 3122. The positions of the first attracting portion 3111 and the fourth attracting portion 3122 correspond in the Y-axis direction and form an attracting group 3101, and a first permanent magnet 313 is provided between the first attracting portion 3111 and the fourth attracting portion 3122. The positions of the second attracting portion 3112 and the third attracting portion 3121 correspond in the Y-axis direction and form another attracting group 3101, and a second permanent magnet 314 is provided between the second attracting portion 3112 and the third attracting portion 3121. The first attracting portion 3111 and the third attracting portion 3121 are arranged along the X-axis direction, and the second attracting portion 3112 and the fourth attracting portion 3122 are arranged along the X-axis direction.

[0081] The portions of the first armature 311 extending out of the package 315 are the first suction portion 3111 and the second suction portion 3112, and the portions of the second armature 312 extending out of the package 315 are the third suction portion 3121 and the fourth suction portion 3122.

[0082] In an exemplary embodiment, the armature assembly 310 is provided with a pull-in group 3101 at the position of the magnetic drive part 3201 of the two yokes 320b, and each pull-in group 3101 is provided with a guide part 3183. The two guide parts 3183 are respectively guided and engaged with the two guide structures 410.

[0083] In this embodiment, the two engaging groups 3101 and the two magnetic drive parts 3201 of the armature assembly 310 are guided and engaged with the guide structure 410 through the guide part 3183. In addition to guiding, the two sets of corresponding guide parts 3183 and guide structure 410 also play the roles of anti-rotation and stable support, so that the armature assembly 310 can be suspended in the housing 100 instead of being supported by the housing 100. This can reduce the amount of scraping between the armature assembly 310 and the housing 100 during the movement, reduce the driving force required for the armature assembly 310, and facilitate the miniaturization design of the relay.

[0084] In this embodiment, the first suction part 3111 and the fourth suction part 3122 constitute a suction group 3101, and the second suction part 3112 and the third suction part 3121 constitute another suction group 3101.

[0085] like Figure 5 As shown, one of the guide portion 3183 and the guide structure 410 is a rod-shaped structure extending along the linear motion direction (i.e., the Y-axis direction) of the armature assembly 310, and the other is a guide hole or guide groove, with the rod-shaped structure movably inserted into the guide hole or guide groove.

[0086] In one embodiment, both guide structures 410 are guide grooves. The openings of the two guide grooves are arranged facing each other or back to back in the X-axis direction. The side of the two guide grooves away from their respective openings is used to guide and cooperate with the two guide parts 3183 respectively. The side of the two guide grooves away from their respective openings can limit the two guide parts 3183 along the arrangement direction of the two guide grooves. The groove walls of the two guide grooves limit the two guide parts 3183 in a direction perpendicular to the arrangement direction of the two guide grooves and perpendicular to the movement direction of the armature assembly 310, thereby realizing the positioning of the armature assembly 310. The opening on the guide groove can reduce the contact area between the two guide parts 3183 and the two guide structures 410, reduce the friction intensity and resistance, and help reduce the required driving force and the volume of the magnetic circuit drive part. In addition, it can also reduce the structural precision requirements of the two guide parts 3183 and the two guide structures 410, and reduce the problem of jamming and inability to move smoothly during the guiding process due to manufacturing errors or assembly errors. In this embodiment, the number of guide grooves and guide portions 3183 is set to two, which can restrict the movement and rotation of the armature assembly 310 in the plane formed by the X-axis and Z-axis directions.

[0087] like Figure 3 , Figure 4 and Figure 5 As shown, the first magnetic drive unit 3241 is located between the first attraction unit 3111 and the fourth attraction unit 3122 along the Y-axis direction, and the second magnetic drive unit 3251 is located between the second attraction unit 3112 and the third attraction unit 3121 along the Y-axis direction. Figure 4 and Figure 5 As shown, the armature assembly 310 also includes a first guide 318, which is fixed relative to the two engaging parts in the engaging group 3101. Along the linear movement direction (Y-axis direction) of the armature assembly, the part of the first guide 318 located between the two engaging parts in the engaging group 3101 is the guide part 3183.

[0088] In one exemplary embodiment, the armature assembly 310 includes two first guide members 318, one of which is mounted on the first engaging portion 3111 and the fourth engaging portion 3122, and the other of which is mounted on the second engaging portion 3112 and the third engaging portion 3121. Furthermore, the portion of one of the first guide members 318 located between the first engaging portion 3111 and the fourth engaging portion 3122 is guided and engaged with the first magnetic drive portion 3241, and the portion of the other first guide member 318 located between the second engaging portion 3112 and the third engaging portion 3121 is guided and engaged with the second magnetic drive portion 3251.

[0089] In this embodiment, the first guide 318 is mounted on the armature's attracting portion. The encapsulation 315 does not need to be designed to be large enough to accommodate the installation of the first guide 318, thereby reducing the space occupied by the armature assembly 310 and facilitating product miniaturization. Furthermore, since the armature and permanent magnet are relatively heavy, mounting the first guide 318 on the armature instead of on the encapsulation 315 allows the first guide 318 to directly support the heavier portion of the armature assembly 310. Compared to a solution where a portion of the structure extends from the encapsulation 315 to mount the first guide 318, the encapsulation 315 is less prone to collapse and tilting due to the greater weight on the center of the armature assembly 310. The lifespan of the encapsulation 315 is less affected, and the encapsulation 315 is less prone to scratches and has lower movement resistance.

[0090] In one embodiment, at least a portion of the first guide 318 is injection molded to the package 315, and / or the first guide 318 is fixedly inserted into at least one suction portion (3111, 3112, 3121, 3122).

[0091] In one embodiment, the suction parts (3111, 3112, 3121, 3122) have insertion holes 319, and the first guide 318 is inserted into the insertion holes 319 of the corresponding two suction parts.

[0092] like Figure 5 As shown, taking the second suction part 3112 and the third suction part 3121 as examples, both the second suction part 3112 and the third suction part 3121 are provided with insertion holes 319. The positions of the insertion holes 319 of the second suction part 3112 and the insertion holes 319 of the third suction part 3121 are corresponding in the Y-axis direction. The first guide member 318 is inserted into the two corresponding insertion holes 319.

[0093] In the embodiments of this application, the first guide member 318 is connected to the second suction part 3112 and the third suction part 3121 by an insertion method, which makes assembly easier and improves assembly efficiency.

[0094] In one implementation, such as Figure 5 and Figure 19 As shown, the first guide member 318 has a rod-shaped structure and includes a rod portion 3181 and a stop cap 3182. The rod portion 3181 is inserted into the insertion holes 319 of two corresponding engaging portions. The stop cap 3182 is connected to one axial end of the rod portion 3181 and stops on the side surface of one engaging portion facing away from the other. The portion of the rod portion 3181 located between the two corresponding engaging portions is the guide portion 3183.

[0095] like Figure 5 and Figure 19As shown, taking the second suction part 3112 and the third suction part 3121 as an example, the rod part 3181 is installed in the insertion hole 319 of the second suction part 3112 and the third suction part 3121, and the stop cap 3182 is connected to one axial end of the rod part 3181 and stops on the side surface of the third suction part 3121 facing away from the second suction part 3112.

[0096] In this embodiment of the application, the first guide member 318 is provided with a stop cap 3182. When the first guide member 318 is inserted, the stop cap 3182 can prevent the first guide member 318 from coming out of the insertion hole 319.

[0097] like Figure 4 As shown, the package 315 connects the two armatures and the first guide 318 into a single unit by injection molding.

[0098] It should be noted that, in one embodiment, the first guide 318 can be inserted into the socket 319 by an interference fit. In this case, the relative position of the first guide 318 and the armature is fixed, so the first guide 318 does not need to be fixed by injection molding. In another embodiment, the end of the first guide 318 with the stop cap 3182 is encapsulated by the encapsulation 315. In this case, the position of the first guide 318 relative to the armature is fixed, so the first guide 318 does not need to be inserted into the socket 319 by an interference fit.

[0099] In one implementation, such as Figure 6 and Figure 18 As shown, the relay also includes a second guide 140, which is fixedly mounted on the housing 100. The coil assembly 310 is inserted into the housing 100 along the width direction (Z-axis direction) of the yoke. At least one magnetic drive part 3201 is opposite to the second guide 140 along the Z-axis direction, and the sides of the magnetic drive part 3201 and the second guide 140 facing each other cooperate to form a guide structure 410.

[0100] The magnetic drive part 3201 and the second guide member 140 are both provided with recesses 411 on their opposite sides along the width direction (Z-axis direction) of the yoke. The two recesses 411 together form a guide structure 410, and the guide part 3183 is movably located between the two recesses 411.

[0101] In one exemplary embodiment, such as Figure 6 and Figure 7As shown, the relay includes two second guide members 140, which are disposed within the receiving cavity 121 of the second housing 120. The two second guide members 140 are connected to the fixing member 130 and respectively form a guide structure 410 with the first magnetic drive portion 3241 of the first yoke 324 and the second magnetic drive portion 3251 of the second yoke 325. Each of the first magnetic drive portion 3241 and one of the second guide members 140 has a recess 411 on its opposite side in the Y-axis direction, and each of the second magnetic drive portion 3251 and the other second guide member 140 has a recess 411 on its opposite side in the Y-axis direction. The two sets of corresponding recesses 411 respectively form the guide structure 410.

[0102] Of course, in other embodiments, the second guide member 140 may not be fixedly connected to the fixing member 130, but may be fixedly connected to the first housing 110 or the second housing 120.

[0103] For example, Figure 16 and Figure 17 As shown, the second guide member 140 is fixedly connected to the second housing 120.

[0104] It should be noted that, in the embodiments of this application, the second guide member 140 not only plays a guiding role, but also supports the first guide member 318 so that the armature assembly 310 is "suspended" inside the outer shell 100. The armature assembly 310 does not contact the inner wall of the outer shell 100. In this way, the armature assembly 310 will not scrape against the outer shell 100 during the reciprocating motion, thus avoiding the generation of scraping and reducing the resistance of the armature assembly 310's movement.

[0105] In one embodiment, both the first guide member 318 and the second guide member 140 are made of metal. The first guide member 318, together with the yoke and the second guide member 140, forms a guiding structure 410, which reduces the risk of scratches caused by friction, thereby preventing scratches from affecting the magnetic circuit connection and the contact between moving and stationary contacts. Simultaneously, it reduces the resistance to the movement of the armature assembly 310, preventing jamming.

[0106] In one embodiment, the second guide member 140 is a flat sheet structure, and the thickness direction of the second guide member 140 is parallel to the linear motion direction (Y-axis direction) of the armature assembly 310.

[0107] In this embodiment, the contact area between the second guide member 140 and the guide portion 3183 is minimized to reduce the resistance to the movement of the armature assembly 310 and prevent jamming.

[0108] like Figure 8 and Figure 9As shown, the contact portion 200 includes two contact components. Each contact component includes a movable spring, a stationary contact, a moving contact, and a lead-out terminal. The movable spring has a fixed end and a movable end. The stationary contact is mounted on the fixed end, and the stationary contact, the fixed end, and the lead-out terminal are fixedly connected. The moving contact is mounted on the movable end. It is worth noting that in this embodiment, the fixed end and the movable end specifically refer to the two ends of the movable spring along its length direction, rather than the two end faces of the movable spring along its length direction. Furthermore, the term "fixed connection" refers to multiple objects being fixedly connected, and the multiple objects cannot produce relative movement with each other. Of course, the term "fixed connection" can also refer to multiple objects being able to produce slight relative movement with each other. For example, in the embodiment of this application, the stationary contact can produce slight movement relative to the fixed end, and the slight movement of the stationary contact does not affect its contact or separation with the moving contact.

[0109] For ease of explanation, the two contact components are defined as the first contact component 210 and the second contact component 220, respectively. The first contact component 210 includes a moving spring, a stationary contact, a moving contact, and a lead-out terminal, defined as a first moving spring 211, a first stationary contact 212, a first moving contact 213, and a first lead-out terminal 214. The first moving spring 211 has a first fixed end 2111 and a first movable end 2112. The first stationary contact 212 is mounted on the first fixed end 2111, and the first stationary contact 212, the first fixed end 2111, and the first lead-out terminal 214 are fixedly connected. The first moving contact 213 is mounted on the first movable end 2112. The second contact assembly 220 includes a moving spring, a stationary contact, a moving contact, and a lead-out terminal, defined as a second moving spring 221, a second stationary contact 223, a second moving contact 222, and a second lead-out terminal 224. The second moving spring 221 has a second fixed end 2211 and a second movable end 2212. The second stationary contact 223 is mounted on the second fixed end 2211, and the second stationary contact 223, the second fixed end 2211, and the second lead-out terminal 224 are fixedly connected. The second moving contact 222 is mounted on the second movable end 2212.

[0110] In one embodiment, the first fixed end 2111, the first movable end 2112, the second fixed end 2211, and the second movable end 2212 are all sheet-like structures.

[0111] The movable ends of the two contact components are respectively located on the same side of the fixed ends corresponding to the movable ends in the two contact components. That is, the position of the first movable end 2112 of the first movable spring 211 corresponds to the position of the second fixed end 2211 of the second movable spring 221, and the position of the second movable end 2212 of the second movable spring 221 corresponds to the position of the first fixed end 2111 of the first movable spring 211. Furthermore, the first movable end 2112 and the second movable end 2212 are respectively located on the same side of the first fixed end 2111 and the second fixed end 2211 along the linear movement direction of the armature assembly 310.

[0112] The magnetic circuit drive portion 300 is located on the side of the two movable ends facing away from the two fixed ends. In the embodiment of this application, the magnetic circuit drive portion 300 is located on the side of the first movable end 2112 facing away from the second fixed end 2211, and the magnetic circuit drive portion 300 is located on the side of the second movable end 2212 facing away from the first fixed end 2111.

[0113] The magnetic circuit drive part 300 is positioned on the side of the movable end facing away from the fixed end, so that the magnetic circuit drive part 300 can be far away from the fixed end and the lead-out terminal. This reduces the influence of the magnetic field generated after the fixed end and the lead-out terminal are energized on the magnetic circuit drive part 300 and improves the reliability of the magnetic circuit drive part 300.

[0114] Of course, in other embodiments, the first movable end 2112 may also be located on the side of the second fixed end 2211 facing away from the magnetic circuit drive portion 300, and the second movable end 2212 may be located on the side of the first fixed end 2111 facing away from the magnetic circuit drive portion 300.

[0115] The magnetic circuit drive section 300 is connected to the movable ends of two contact components and is used to drive the movable ends to move relative to their corresponding fixed ends, so as to cause the moving contacts on the movable ends to contact or separate from the corresponding stationary contacts on the fixed ends. That is, the armature assembly 310 of the magnetic circuit drive section 300 is simultaneously connected to the first movable end 2112 and the second movable end 2212, and is used to simultaneously drive the first movable end 2112 to move relative to the second fixed end 2211 and the second movable end 2212 to move relative to the first fixed end 2111, so that the first movable end 2112 causes the first moving contact 213 to contact or separate from the second stationary contact 223 and the second movable end 2212 causes the second moving contact 222 to contact or separate from the first stationary contact 212.

[0116] It is understandable that the armature assembly 310 can be fixedly connected to the two movable ends or movably connected. When the armature assembly 310 is movably connected to the two movable ends, the armature assembly 310 can be connected to the two movable ends respectively through two elastic elements.

[0117] like Figure 8 As shown, for example, the two elastic elements are a first elastic element 215 and a second elastic element 225. One end of the first elastic element 215 is fixedly connected to the first movable end 2112, and the other end of the first elastic element 215 abuts against the armature assembly 310. One end of the second elastic element 225 is fixedly connected to the second movable end 2212, and the other end of the second elastic element 225 abuts against the armature assembly 310.

[0118] When the relay switches from an open state to a closed state, the armature assembly 310 drives the first movable end 2112 and the second movable end 2212 to move closer to the second fixed end 2211 and the first fixed end 2111, respectively. When the first moving contact 213 contacts the second stationary contact 223 and the second moving contact 222 contacts the first stationary contact 212, the armature assembly 310 continues to move to compress the first elastic element 215 and the second elastic element 225 until the armature assembly 310 moves to its limit position. The continued movement of the armature assembly 310 is called overtravel. The first elastic element 215 and the second elastic element 225 are deformed under pressure to provide contact pressure, ensuring the reliability of the contact between the moving and stationary contacts.

[0119] As an example, the armature assembly 310 can drive the first movable end 2112 and the second movable end 2212 to move simultaneously, so that the first moving contact 213 and the second stationary contact 223 and the second moving contact 222 and the first stationary contact 212 can simultaneously come into contact or separate simultaneously.

[0120] When the contact portion 200 switches from the open state to the closed state, the armature assembly 310 drives the first movable end 2112 and the second movable end 2212 to move closer to the second fixed end 2211 and the first fixed end 2111, respectively, so that the first moving contact 213 contacts the second stationary contact 223 and the second moving contact 222 contacts the first stationary contact 212.

[0121] When the contact portion 200 switches from the closed state to the open state, the armature assembly 310 drives the first movable end 2112 and the second movable end 2212 to move away from the second fixed end 2211 and the first fixed end 2111, respectively, so that the first moving contact 213 separates from the second stationary contact 223 and the second moving contact 222 separates from the first stationary contact 212.

[0122] Therefore, in the relay of this application embodiment, the movable ends of the two contact components are respectively arranged on the same side of the fixed ends corresponding to the movable ends of the two contact components. The movable ends of the two contact components are driven by the same magnetic circuit driving part 300 to realize the switching of the two contact components from closed state to open state and from open state to closed state. Thus, the movement space required by the movable ends of the two contact components when closing or separating is located on the same side of the fixed ends of the two contact components. In this way, only one side of the fixed ends of the two contact components needs to be reserved, instead of reserving space on both sides of the fixed ends of the two contact components. This makes the structure of the two contact components and the magnetic circuit driving part 300 more compact in the driving direction, thereby significantly reducing the size of the internal space occupied by the two contact components in the relay, which is beneficial to the miniaturization design of the product.

[0123] like Figure 8As shown, the lead-out terminals are sheet-like structures, and the lead-out terminals of the two contact components are arranged on the same plane, that is, the first lead-out terminal 214 and the second lead-out terminal 224 are arranged on the same plane.

[0124] like Figure 9 As shown, the first moving spring 211 and the second moving spring 221 are arranged intersectingly. Furthermore, along the extending direction of the moving springs, the intersecting area is located between two sets of corresponding moving contacts and stationary contacts. The portions of the intersecting areas of the two moving springs are spaced apart from each other.

[0125] In one embodiment, the intersection area of ​​the first moving spring 211 and the second moving spring 221 is located between two corresponding sets of moving contacts and stationary contacts. Specifically, the first moving contact 213 and the second stationary contact 223 are defined as the first set of contacts, the second moving contact 222 and the first stationary contact 212 are defined as the second set of contacts, and the intersection area of ​​the first moving spring 211 and the second moving spring 221 is located between the first set of contacts and the second set of contacts.

[0126] In the embodiments of this application, the intersection area of ​​the first moving spring 211 and the second moving spring 221 is located between the two sets of contact groups, making full use of the space between the two sets of contact groups without occupying other areas, further reducing the space occupied by the two contact components, which is conducive to the miniaturization design of the product.

[0127] In one embodiment, the first movable spring 211 has a first curved section 2113, a first fixed end 2111 connected to one end of the first curved section 2113, and a first movable end 2112 connected to the other end of the first curved section 2113. The first fixed end 2111 is connected to the first movable end 2112 via the first curved section 2113, and the first stationary contact 212 and the first movable contact 213 on the first movable spring 211 are staggered in the contact separation direction. The second movable spring 221 has a second curved section 2213, a second fixed end 2211 connected to one end of the second curved section 2213, and a second movable end 2212 connected to the other end of the second curved section 2213. The second fixed end 2211 is connected to the second movable end 2212 via the second curved section 2213, so that the second movable contact 222 and the second stationary contact 223 on the second movable spring 221 are staggered in the contact separation direction. The first curved section 2113 and the second curved section 2213 are arranged in an intersecting manner.

[0128] In the embodiments of this application, on the one hand, the movable end of the movable spring is connected to the fixed end through a bent section (first bent section 2113 or second bent section 2213). The bent section has better elastic deformation capability and is easier to deform. Therefore, when the movable end moves, the bent section can serve as a bending fulcrum, making the movable end easier to move by the armature driving part 310. On the other hand, the two movable springs are arranged in a cross-shaped manner through two bent sections, and most of the area of ​​the movable springs can be used to form the fixed end and the movable end, which can improve the magnetic attraction force and short-circuit resistance. Furthermore, since the cross-sectional area of ​​the cross portion of the movable springs is reduced, setting a bent part in the cross portion is also beneficial to improving the current carrying capacity of the cross portion of the movable springs.

[0129] It is understood that the shape of each bending segment can be U-shaped, V-shaped, C-shaped or polygonal, etc., and this application does not limit it.

[0130] In one embodiment, the first fixed end 2111, the first movable end 2112, the second fixed end 2211, and the second movable end 2212 are all flat plates. When the contact portion is in a closed state, the plane where the first fixed end 2111 of the first movable spring 211 is located is parallel to the plane where the first movable end 2112 is located, and the plane where the second fixed end 2211 of the second movable spring 221 is located is parallel to the plane where the second movable end 2212 is located.

[0131] In the embodiments of this application, the plane where the fixed end of the moving spring is located is parallel to the plane where the movable end is located, so that the structure formed by the cross arrangement of the first moving spring 211 and the second moving spring 221 is more compact in the contact direction between the moving contact and the stationary contact, further reducing the space occupied inside the relay.

[0132] Of course, in other embodiments, the first moving spring 211 and the second moving spring 221 may also be configured as straight-plate structures with the portion between the moving contact and the stationary contact, and the first moving spring 211 and the second moving spring 221 are arranged in an "X" shape after being crossed.

[0133] In one embodiment, the fixed end is flat and the two fixed ends are disposed on the same first plane, which is perpendicular to the linear motion direction of the armature assembly 310; and / or, the movable end is flat and the two movable springs are located on the same second plane when they are not deformed, which is perpendicular to the linear motion direction of the armature assembly 310.

[0134] In one embodiment, the lead-out terminal is a sheet-like structure, and the lead-out terminals of the two contact components are disposed on the same third plane, which is perpendicular to the linear motion direction of the armature assembly 310.

[0135] The bent sections of the moving springs in both contact components have notches, and the bent section of the moving spring in each contact component passes through the notch of the bent section of the moving spring in the other contact component, and the two bent sections do not contact each other. That is, as... Figure 9 As shown, the first curved segment 2113 has a first notch 2114, and the second curved segment 2213 has a second notch 2214. The first curved segment 2113 passes through the second notch 2214, and the second curved segment 2213 passes through the first notch 2114. Furthermore, the first curved segment 2113 and the second curved segment 2213 do not contact each other. In one embodiment, the movable spring has a notch in the width direction.

[0136] In this embodiment, the two moving springs do not contact each other, and the two currents can flow independently through them, forming a reliable parallel circuit structure that ensures current shunting and temperature reduction. Furthermore, by providing notches on the moving springs to achieve a cross-arrangement, the structure of the moving springs is simpler, material loss is lower, and the space occupied in the width direction is smaller, further facilitating product miniaturization. Moreover, providing notches on both moving springs helps ensure the consistency of their structures, maximizing the consistency of their contact and disconnection performance. Additionally, the two movable ends and two fixed ends of the two moving springs can be arranged in the same direction along their extension direction, allowing the armature assembly 310 to easily connect to the two movable ends. This ensures a symmetrical arrangement of the mating structure between the armature assembly 310 and the two movable ends, thereby driving the two moving springs in a balanced manner.

[0137] Please return to the reference. Figure 8 The first fixed end 2111 and the second fixed end 2211 are arranged in parallel. Furthermore, the first fixed end 2111 and the second fixed end 2211 are arranged on the same plane.

[0138] In one embodiment, the first lead-out terminal 214 is located on the side of the first fixed end 2111 facing away from the second movable end 2212, and the second lead-out terminal 224 is located on the side of the second fixed end 2211 facing away from the first movable end 2112.

[0139] In one embodiment, the first stationary contact 212 connects the first fixed end 2111 and the first lead-out terminal 214 by riveting, and the second stationary contact 223 connects the second fixed end 2211 and the second lead-out terminal 224 by riveting, but this is not a limitation.

[0140] In the embodiments of this application, the stationary contact, the fixed end, and the lead-out terminal are fixedly connected to each other. Since the lead-out terminal is fixedly connected to the second housing 120, the lead-out terminal can play a role in stabilizing the position of the stationary contact.

[0141] In one embodiment, the first movable spring 211 and the second movable spring 221 are identical in size and structure. This design creates a symmetrical structure when the two movable springs are arranged crosswise, ensuring that the reaction forces of the two contact components are substantially equal, thereby balancing the forces on the armature drive section 310. Furthermore, it allows the contact and disconnection performance of the two contact components to be kept as consistent as possible.

[0142] like Figure 8 As shown, the coil assembly 320 is configured to drive the armature assembly 310 to move in a straight line in response to an input signal, thereby causing the first movable end 2112 and the second movable end 2212 to move.

[0143] In one embodiment, the moving direction of the armature assembly 310 is parallel to the thickness direction of the first fixed end 2111.

[0144] Compared to the rotating design of the armature assembly in the prior art, the armature assembly 310 of this application embodiment is designed to move along a straight line, which does not have the problem of radial component loss, and has the advantages of simple structure, simplified assembly process and not occupying too much space.

[0145] like Figure 8 As shown, the package 315 has two drive arms 3151, which are respectively connected to the first movable end 2112 and the second movable end 2212, and are used to drive the first movable end 2112 and the second movable end 2212 to move respectively.

[0146] like Figure 10 As shown, the coil winding 322, excited by a pulse electrical signal, reverses the polarity temporarily formed by the first magnetic drive part 3241 and the second magnetic drive part 3251 to switch the engagement of different parts of the two armatures and drive the armature assembly 310 to move. In this embodiment, for ease of explanation, it is assumed that when the signal input terminal 326 receives the first pulse electrical signal, the coil winding 322 generates a first magnetic field, and the first magnetic drive part 3241 temporarily has an N pole polarity, and the second magnetic drive part 3251 temporarily has an S pole polarity. After the first pulse electrical signal disappears, the first magnetic field of the coil winding 322 disappears, and the first magnetic drive part 3241 and the second magnetic drive part 3251 no longer have polarity generated by the first magnetic field; when the signal input terminal 326 receives a second pulse electrical signal with a current direction opposite to that of the first pulse electrical signal, the coil winding 322 generates a second magnetic field, reversing the polarity of the first magnetic drive part 3241 to have an S pole polarity, and reversing the polarity of the second magnetic drive part 3251 to have an N pole polarity. After the second pulse electrical signal disappears, the second magnetic field of the coil winding 322 disappears, and the first magnetic drive part 3241 and the second magnetic drive part 3251 no longer have polarity generated based on the second magnetic field.

[0147] like Figure 10 As shown, the armature assembly 310 is driven by the coil assembly 320 to move between a first position and a second position. When the armature assembly 310 moves to the first position, the relay is in the open state. When the armature assembly 310 moves to the second position, the relay is in the closed state.

[0148] The first permanent magnet 313 and the second permanent magnet 314 are arranged at intervals along the axial direction of the iron core 323, and each permanent magnet has two magnetic poles with fixed polarity and opposite polarities. For ease of explanation, the two magnetic poles of each permanent magnet are referred to as the first magnetic pole 316 and the second magnetic pole 317, and it is assumed that the polarity of the first magnetic pole 316 is the N pole and the polarity of the second magnetic pole 317 is the S pole.

[0149] The first armature 311 and the second armature 312 are arranged alternately. The first armature 311 is in contact with the first magnetic pole 316 of the two permanent magnets. The second armature 312 is in contact with the second magnetic pole 317 of the two permanent magnets.

[0150] like Figure 10 As shown, when the armature assembly 310 is in the magnetic holding state in the first position, the first engaging part 3111 engages the first magnetic drive part 3241, and the third engaging part 3121 engages the second magnetic drive part 3251. At this time, the magnetic circuit drive part 300 forms two closed magnetic circuits, namely the first closed magnetic circuit and the second closed magnetic circuit. The first closed magnetic circuit starts from the first magnetic pole 316 of the first permanent magnet 313, passes through the first engaging part 3111, the first magnetic drive part 3241, the first yoke 324, the iron core 323, the second yoke 325, the second magnetic drive part 3251, the third engaging part 3121, the part where the second armature 312 and the first armature 311 intersect, and the second magnetic pole 317 of the first permanent magnet 313 and returns to the first magnetic pole 316 of the first permanent magnet 313, without any air gap in between, and passes through the entire coil assembly 320. The second closed magnetic circuit extends from the first magnetic pole 316 of the second permanent magnet 314, through the portion where the first armature 311 and the second armature 312 intersect, through the first attraction part 3111, the first magnetic drive part 3241, the first yoke 324, the iron core 323, the second yoke 325, the second magnetic drive part 3251, the third attraction part 3121, and back to the first magnetic pole 316 of the second permanent magnet 314, without any air gap, and passes through the entire coil assembly 320. Therefore, when the armature assembly 310 is in the magnetic holding state in the first position, due to the existence of the first closed magnetic circuit and the second closed magnetic circuit, and the superposition effect between the two, a greater magnetic attraction force is generated between the first attraction part 3111 and the first magnetic drive part 3241, and between the third attraction part 3121 and the second magnetic drive part 3251, so that the armature assembly 310 is held in the first position relative to the coil assembly 320.

[0151] like Figure 11 As shown, at this time, the coil winding 322 is excited by the first pulse electrical signal to generate a first magnetic field, causing the first magnetic drive part 3241 to temporarily have an N pole polarity and the second magnetic drive part 3251 to temporarily have an S pole polarity. Since the first magnetic drive part 3241 and the first attraction part 3111 have the same polarity, both being N poles, the first magnetic drive part 3241 generates a magnetic repulsion force on the first attraction part 3111; since the second magnetic drive part 3251 and the third attraction part 3121 have the same polarity, both being S poles, the second magnetic drive part 3251 generates a magnetic repulsion force on the third attraction part 3121. Furthermore, the magnetic circuit drive part 300 also forms two driving magnetic circuits at this time, namely the first driving magnetic circuit and the second driving magnetic circuit. The first driving magnetic circuit starts from the first magnetic drive section 3241, passes through the travel air gap, the fourth attraction section 3122, the second magnetic pole 317 of the first permanent magnet 313, the first magnetic pole 316 of the first permanent magnet 313, the part where the first armature 311 and the second armature 312 intersect, the second attraction section 3112, the travel air gap, the second magnetic drive section 3251, the second yoke 325, the iron core 323, and the first yoke 324, and returns to the first magnetic drive section 3241. There are only two travel air gaps in between, and it passes through the entire coil assembly 320. The second driving magnetic circuit starts from the first magnetic drive section 3241, passes through the travel air gap, the fourth attraction section 3122, the part where the first armature 311 and the second armature 312 intersect, the second magnetic pole 317 of the second permanent magnet 314, the first magnetic pole 316 of the second permanent magnet 314, the second attraction section 3112, the travel air gap, the second magnetic drive section 3251, the second yoke 325, the iron core 323, and the first yoke 324, and returns to the first magnetic drive section 3241. There are only two travel air gaps in between, and it passes through the entire coil assembly 320. Therefore, when the coil assembly 320 receives the first pulse electrical signal, not only does the first magnetic drive part 3241 exert a magnetic repulsive force on the first attraction part 3111, and the second magnetic drive part 3251 exert a magnetic repulsive force on the third attraction part 3121, but also, due to the existence of the first driving magnetic circuit and the second driving magnetic circuit, and the superposition effect between the two, the first magnetic drive part 3241 generates a magnetic attraction force on the fourth attraction part 3122, and the second magnetic drive part 3251 generates a magnetic attraction force on the second attraction part 3112, so that the coil assembly 320 can form a stronger driving force on the armature assembly 310, pushing the armature assembly 310 to move from the first position to the second position.

[0152] like Figure 12As shown, when the armature assembly 310 has just moved to the second position, the first pulse electrical signal and the first magnetic field have not yet disappeared. The first magnetic drive part 3241 still temporarily has the N pole polarity, and the second magnetic drive part 3251 still temporarily has the S pole polarity. At this time, the magnetic circuit drive part 300 forms two closed magnetic loops, namely the third closed magnetic loop and the fourth closed magnetic loop. The third closed magnetic loop starts from the first magnetic drive part 3241, passes through the fourth attraction part 3122, the second magnetic pole 317 of the first permanent magnet 313, the first magnetic pole 316 of the first permanent magnet 313, the part where the first armature 311 and the second armature 312 intersect, the second attraction part 3112, the second magnetic drive part 3251, the second yoke 325, the iron core 323, and the first yoke 324 and returns to the first magnetic drive part 3241, without any air gap in between, and passes through the entire coil assembly 320. The fourth closed magnetic circuit originates from the first magnetic drive section 3241, passes through the fourth attraction section 3122, the portion where the first armature 311 and the second armature 312 intersect, the second magnetic pole 317 of the second permanent magnet 314, the first magnetic pole 316 of the second permanent magnet 314, the second attraction section 3112, the second magnetic drive section 3251, the second yoke 325, the iron core 323, and the first yoke 324, and returns to the first magnetic drive section 3241, without any air gaps in between, and passes through the entire coil assembly 320. Therefore, when the armature assembly 310 has just moved to the second position, due to the existence of the third and fourth closed magnetic circuits and the superposition effect between them, a greater magnetic attraction force is generated between the first magnetic drive section 3241 and the fourth attraction section 3122, and between the second magnetic drive section 3251 and the second attraction section 3112.

[0153] like Figure 13 As shown, when the first pulse electrical signal disappears, the first magnetic field disappears, and the first magnetic drive unit 3241 and the second magnetic drive unit 3251 no longer possess the polarity generated by the first magnetic field. At this time, the aforementioned third closed magnetic circuit and fourth closed magnetic circuit still exist. The third closed magnetic circuit can be considered to originate from the first magnetic pole 316 of the first permanent magnet 313, and its path is... Figure 12 The path of the third closed magnetic loop shown is the same; the fourth closed magnetic loop can be considered to start from the first magnetic pole 316 of the second permanent magnet 314, and its path is the same as... Figure 12 The path of the fourth closed magnetic circuit shown is the same. The third closed magnetic circuit and the fourth closed magnetic circuit are superimposed on each other, so that a greater magnetic attraction is generated between the fourth attraction part 3122 and the first magnetic drive part 3241 and between the second attraction part 3112 and the second magnetic drive part 3251, and the armature assembly 310 is held in the second position relative to the coil assembly 320.

[0154] like Figure 14As shown, at this time, the coil winding 322 is excited by the second pulse electrical signal to generate a second magnetic field, causing the first magnetic drive part 3241 to temporarily have an S pole polarity, and the second magnetic drive part 3251 to temporarily have an N pole polarity. Since the first magnetic drive part 3241 and the fourth attraction part 3122 have the same polarity, both being S poles, the first magnetic drive part 3241 generates a magnetic repulsion force on the fourth attraction part 3122; since the second magnetic drive part 3251 and the second attraction part 3112 have the same polarity, both being N poles, the second magnetic drive part 3251 generates a magnetic repulsion force on the second attraction part 3112. Furthermore, the magnetic circuit drive part 300 also forms two driving magnetic circuits at this time, namely the third driving magnetic circuit and the fourth driving magnetic circuit. The third driving magnetic circuit starts from the second magnetic drive section 3251, passes through the travel air gap, the third attraction section 3121, the part where the second armature 312 and the first armature 311 intersect, the second magnetic pole 317 of the first permanent magnet 313, the first magnetic pole 316 of the first permanent magnet 313, the first attraction section 3111, the travel air gap, the first magnetic drive section 3241, the first yoke 324, the iron core 323, and the second yoke 325, and returns to the second magnetic drive section 3251. There are only two travel air gaps in between, and it passes through the entire coil assembly 320. The fourth driving magnetic circuit runs from the second magnetic drive section 3251 through the stroke air gap, the third attraction section 3121, the second magnetic pole 317 of the second permanent magnet 314, the first magnetic pole 316 of the second permanent magnet 314, the part where the first armature 311 and the second armature 312 intersect, the first attraction section 3111, the stroke air gap, the first magnetic drive section 3241, the first yoke 324, the iron core 323, and the second yoke 325 back to the second magnetic drive section 3251. There are only two stroke air gaps in between, and it passes through the entire coil assembly 320. Therefore, when the coil assembly 320 receives the second pulse electrical signal, not only does the first magnetic drive part 3241 exert a magnetic repulsive force on the fourth attraction part 3122, and the second magnetic drive part 3251 exert a magnetic repulsive force on the second attraction part 3112, but also, due to the existence of the third push magnetic circuit and the fourth push push circuit, and the superposition effect between the two, the first magnetic drive part 3241 generates a magnetic attraction force on the first attraction part 3111, and the second magnetic drive part 3251 generates a magnetic attraction force on the third attraction part 3121, so that the coil assembly 320 can form a stronger driving force on the armature assembly 310, pushing the armature assembly 310 to move from the second position to the first position.

[0155] like Figure 15 As shown, when the armature assembly 310 has just moved to the first position, the second pulse electrical signal and the second magnetic field have not yet disappeared. The first magnetic drive part 3241 still temporarily has the S pole polarity, and the second magnetic drive part 3251 still temporarily has the S pole polarity. At this time, the magnetic circuit drive part 300 still exists. Figure 10 The first closed magnetic circuit and the second closed magnetic circuit are shown, wherein the first closed magnetic circuit can be considered to originate from the second magnetic drive unit 3251, and its path is similar to... Figure 10 The path of the first closed magnetic loop shown is the same; the second closed magnetic loop can be considered to originate from the second magnetic drive unit 3251, and its path is the same as... Figure 10 The path of the second closed magnetic circuit shown is the same. Therefore, when the armature assembly 310 just moves to the first position, due to the existence of the first closed magnetic circuit and the second closed magnetic circuit, and the superposition effect between the two, a greater magnetic attraction force is generated between the first magnetic drive part 3241 and the first attraction part 3111, and between the second magnetic drive part 3251 and the third attraction part 3121.

[0156] When the second pulse electrical signal disappears, the second magnetic field disappears, and the first magnetic drive unit 3241 and the second magnetic drive unit 3251 no longer have the polarity generated by the second magnetic field. At this time, the armature assembly 310... Figure 10 As shown, it is in a magnetically held state in the first position.

[0157] In summary, the relays of the embodiments of this application have at least the following advantages and beneficial effects: In this embodiment of the relay, the guide structure 410 guides the linear motion of the armature assembly 310. When the coil assembly 320 drives the armature assembly 310 to move, the movement trajectory of the armature assembly 310 is more precise, preventing the armature assembly 310 from deflecting during reciprocating motion and ensuring the reliability of the contact between the moving and stationary contacts of the contact portion 200. Furthermore, at least a portion of the guide structure 410 is located on the yoke 320b. Since the armature assembly 310 needs to magnetically engage with the yoke, its relative position to the yoke is easier to determine. Therefore, direct guidance by the yoke 320b avoids the influence of assembly errors between components on the guiding fit accuracy, improving the accuracy and stability of the yoke's guidance of the armature assembly 310.

[0158] It is understood that the various embodiments / implementations provided in this application can be combined with each other without creating contradictions, and will not be described one by one here.

[0159] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0160] In the description of the embodiments of the application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the application.

[0161] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the claims. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0162] The above are merely preferred embodiments of the application examples and are not intended to limit the application examples. For those skilled in the art, the application examples can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the application examples should be included within the protection scope of the application examples.

Claims

1. A relay, characterized in that, include: The magnetic circuit drive section includes a coil assembly and an armature assembly, the coil assembly including a yoke; the coil assembly is configured to reverse the polarity temporarily formed by the yoke in response to an input signal, thereby driving the armature assembly to move linearly relative to the coil assembly. The linear motion of the armature assembly is guided by a guide structure, at least a portion of which is located on the yoke.

2. The relay according to claim 1, characterized in that, The yoke is provided with a magnetic drive portion with a magnetic pole face, and at least one of the magnetic drive portions is provided with at least a portion of the guide structure; the armature assembly is provided with an attraction group; the attraction group includes an attraction portion adapted to engage with the magnetic drive portion; At least one of the suction assemblies is provided with a guide portion, which is guided and engaged with the guide structure.

3. The relay according to claim 2, characterized in that, One of the guide portion and the guide structure is a rod-shaped structure extending along the linear movement direction of the armature assembly, and the other is a guide hole or guide groove, wherein the rod-shaped structure is movably inserted into the guide hole or the guide groove.

4. The relay according to claim 3, characterized in that, The number of the guide portion and the corresponding guide structure is at least two; and / or, The coil assembly includes two yokes; the number of guide structures is two and they are respectively arranged corresponding to the two yokes; the armature assembly is provided with the attraction group at the position of the magnetic drive part corresponding to the two yokes, and the two attraction groups are provided with the guide part; the two guide parts are respectively guided and engaged with the two guide structures.

5. The relay according to claim 4, characterized in that, Both of the guide structures are guide grooves, and the openings of the two guide grooves are arranged facing each other or back to back; the side of each guide groove away from its respective opening is used to guide and cooperate with the two guide parts respectively.

6. The relay according to claim 3, characterized in that, The attraction group includes two attraction portions arranged at intervals along the linear movement direction of the armature assembly. The armature assembly includes a first guide member, which is fixed relative to the two attraction portions in the attraction group. The portion of the first guide member located between the two attraction portions along the linear movement direction of the armature assembly is the guide portion. The magnetic drive portion is located between the corresponding two attraction portions.

7. The relay according to claim 6, characterized in that, The armature assembly further includes a package; each of the suction portions of the suction assembly extends out of the package; at least a portion of the first guide is injection molded and fixed to the package, and / or the first guide is fixedly inserted into at least one of the suction portions.

8. The relay according to claim 7, characterized in that, The suction part has a socket, and the first guide is inserted into the socket of the two corresponding suction parts.

9. The relay according to claim 8, characterized in that, The first guide member has a rod portion and a stop cap. The rod portion is inserted into the insertion holes of the two suction portions. The stop cap is connected to one axial end of the rod portion and stops on the side surface of one of the suction portions facing away from the other suction portion. The portion of the rod portion located between the two suction portions is the guide portion.

10. The relay according to claim 9, characterized in that, The first guide member has one end with the stop cap encapsulated by the encapsulation member.

11. The relay according to claim 7, characterized in that, The first guide is made of metal.

12. The relay according to claim 3, characterized in that, The relay further includes a housing and a second guide member, the second guide member being fixedly installed in the housing; the coil assembly is inserted into the housing along the width direction of the yoke, and at least one magnetic drive part is opposite to the second guide member along the width direction of the yoke; the magnetic drive part and the second guide member cooperate on opposite sides along the width direction of the yoke to form the guide structure; the guide structure is the guide hole or the guide groove.

13. The relay according to claim 12, characterized in that, The magnetic drive part and the second guide member are both provided with recesses on the sides facing each other in the width direction of the yoke, and the two recesses together form the guide structure, with the guide part movably located between the two recesses.

14. The relay according to claim 12, characterized in that, The outer casing includes a first housing, a second housing, and a fixing member. The second housing includes a receiving cavity with an opening. The magnetic circuit drive part is installed in the receiving cavity. The fixing member is located in the receiving cavity and is fixedly connected to the second housing. The first housing is connected to the second housing and covers the opening of the second housing. The second guide member is fixed to the fixing member.

15. The relay according to claim 12, characterized in that, The outer casing includes a first casing and a second casing. The second casing includes a receiving cavity with an opening. The magnetic circuit drive part is installed in the receiving cavity. The first casing is connected to the second casing and covers the opening of the second casing. The second guide member is fixed to either the first housing or the second housing.

16. The relay according to claim 12, characterized in that, The second guide is made of metal.

17. The relay according to claim 12, characterized in that, The second guide member has a flat plate structure, and the thickness direction of the second guide member is parallel to the linear movement direction of the armature assembly.

18. The relay according to claim 2, characterized in that, The coil assembly further includes a coil frame, a coil winding, and an iron core. The coil winding is wound around the outer periphery of the coil frame, and the iron core passes through the coil frame and is surrounded by the coil winding. The coil assembly includes two yokes, each fixed to one end of the iron core along its axial direction. One end of each yoke extends toward the same side of the coil assembly and forms a magnetic drive portion. The two magnetic drive portions are arranged in a direction parallel to the axial direction of the coil winding; and / or, The armature assembly has the attraction group at both ends along the direction parallel to the axial direction of the coil winding.

19. The relay according to claim 2, characterized in that, The guide portion and / or the guide structure are made of metallic material.

20. The relay according to claim 1, characterized in that, The direction of movement of the armature assembly is perpendicular to the axis of the coil assembly.

21. The relay according to any one of claims 1-20, characterized in that, It also includes a contact portion, which has a closed state and an open state; The armature assembly is configured to drive the contact portion to switch from the closed state to the open state and from the open state to the closed state. The contact portion includes two contact components, each comprising a movable spring, a stationary contact, a movable contact, and a lead-out terminal. The movable spring has a fixed end and a movable end. The stationary contact is mounted on the fixed end, and the stationary contact, the fixed end, and the lead-out terminal are fixedly connected. The movable contact is mounted on the movable end. The movable end of each movable spring corresponds to the fixed end of the other movable spring, and the two movable ends are located on the same side of the two fixed ends along the linear movement direction of the armature assembly. The armature assembly has two drive arms, which are respectively connected to the two movable ends, and are used to drive the movable ends to move relative to the corresponding fixed ends, so as to cause the moving contact on the movable end to contact or separate from the stationary contact on the corresponding fixed end.

22. The relay according to claim 21, characterized in that, The magnetic circuit drive section is located on the side of the two movable ends facing away from the two fixed ends.

23. The relay according to claim 21, characterized in that, The moving springs of the two contact components are arranged in a cross manner, and along the extending direction of the moving springs, the cross area is located between two sets of corresponding moving contacts and stationary contacts; the portions of the cross areas of the two moving springs are spaced apart from each other.

24. The relay according to claim 23, characterized in that, The movable spring also has a curved section, and the fixed end is connected to the movable end through the curved section, so that the movable contact and the stationary contact on the movable spring are staggered in the linear motion direction of the armature assembly, and the two curved sections are arranged crosswise.

25. The relay according to claim 24, characterized in that, The curved segments of the two contact components have notches, with each curved segment of the contact component passing through the notch of the other contact component, and the two curved segments not contacting each other.

26. The relay according to claim 23, characterized in that, The fixed ends of the two contact components are arranged in parallel.

27. The relay according to claim 23, characterized in that, The fixed end is flat and the two fixed ends are arranged on the same first plane, which is perpendicular to the linear movement direction of the armature assembly; and / or, the movable end is flat and the two movable springs are located on the same second plane when they are not deformed, which is perpendicular to the linear movement direction of the armature assembly.

28. The relay according to claim 21, characterized in that, The lead-out terminal has a sheet-like structure, and the lead-out terminals of the two contact assemblies are arranged on the same third plane, which is perpendicular to the linear movement direction of the armature assembly.

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