relay

Abstract

The application discloses a relay, comprising two contact assemblies, each contact assembly comprising a moving spring, a stationary contact, a moving contact and a lead terminal, the moving spring having a connecting end and a movable end, the stationary contact, the connecting end and the lead terminal being fixedly connected, and the moving contact being arranged on the movable end; the moving contact of any one contact assembly corresponds to the stationary contact of the other contact assembly, and when each corresponding moving contact and stationary contact are in contact, the two moving springs are in parallel with each other; the movable end of each moving spring corresponds to the connecting end of the other moving spring, and the two movable ends are respectively located on the same side of the two connecting ends along a first direction.

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 housing, and a contact portion and a drive portion disposed within the housing. The contact portion includes two contact assemblies connected in parallel. Each contact assembly includes a moving spring and a moving contact and a stationary contact disposed on the moving spring. The armature drive portion of the drive portion can drive the moving spring of the two contact assemblies to move, so that the corresponding moving contact and the stationary contact are in contact or separated.

[0004] However, since the moving springs of the two contact components of the relay in the prior art are far apart when disconnected, the housing needs to reserve enough space for the moving springs in the contact separation direction, resulting in a large overall size of the relay, which is not conducive to the miniaturization design of the product. Utility Model Content

[0005] This application provides a relay to solve the problem of large volume occupied by the contact portion in related technologies.

[0006] The relay of this application embodiment 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 connecting end and a movable end, and the stationary contact, the connecting end, and the lead-out terminal are connected. The moving contact is mounted on the movable end. The moving contact of any one contact component corresponds to the stationary contact of the other contact component, and when the corresponding moving contact contacts the stationary contact, the two movable springs are connected in parallel. The movable end of each movable spring corresponds to the connecting end of the other movable spring, and the two movable ends are located on the same side of the two connecting ends along a first direction.

[0007] According to some embodiments of this application, the orthographic projections of the two movable springs on a projection plane have an overlapping area, and the projection plane is perpendicular to the width direction of the movable springs.

[0008] According to some embodiments of this application, the moving springs of the two contact components are arranged crosswise, and the crosswise area is located between two sets of corresponding moving contacts and stationary contacts, with the crosswise portions spaced apart from each other along the width direction of the moving springs.

[0009] According to some embodiments of this application, the movable spring also has a bent section, and the connecting end is connected to the movable end through the bent section, so that the movable contact and the stationary contact on the movable spring are staggered in the first direction; the two bent sections are arranged crosswise.

[0010] According to some embodiments of this application, the movable spring is provided with a notch at least at the location where the bent section is provided, and on one side along the width direction of the movable spring, at least a portion of the width direction of each movable spring is embedded in the notch of another movable spring, and the two bent sections are spaced apart from each other.

[0011] According to some embodiments of this application, a portion of the notch of the movable spring is located at the connecting end of the movable spring, and another portion is located at the bent section of the movable spring.

[0012] According to some embodiments of this application, the bending segment has a first segment and a second segment, one end of the first segment is connected to the movable end, one end of the second segment is connected to the other end of the first segment, and the other end of the second segment is connected to the connecting end; Wherein, along the width direction of the movable spring, the size of the first segment is larger than the size of the second segment; and the side where the first segment and the second segment meet constitute at least a portion of the edge of the notch.

[0013] According to some embodiments of this application, when the moving contact is in contact with the stationary contact, the two first segment current directions are opposite along the first direction.

[0014] According to some embodiments of this application, when the moving contact contacts the stationary contact, the two first segments are arranged parallel to the first plane, and the first plane is perpendicular to the arrangement direction of the two connecting ends.

[0015] According to some embodiments of this application, the movable reed is composed of a single reed or is formed by stacking at least two reeds.

[0016] According to some embodiments of this application, when the movable reed is formed by stacking at least two reeds, the at least two reeds are arranged at intervals from each other in the region where the bending section is located.

[0017] According to some embodiments of this application, both the connecting end and the movable end are flat plates, and when the moving contact and the stationary contact are in contact, the plane where the connecting end of the moving spring is located is parallel or nearly parallel to the plane where the movable end is located.

[0018] According to some embodiments of this application, the two connection ends are disposed on the same plane.

[0019] According to some embodiments of this application, the connection ends of the two contact components are arranged in parallel.

[0020] According to some embodiments of this application, the two moving springs are identical in size and structure.

[0021] According to some embodiments of this application, the two contact components are connected only through their corresponding moving and stationary contacts when in the closed state.

[0022] According to some embodiments of this application, the lead-out terminal is located on the side of the connection end opposite to the corresponding movable end.

[0023] 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 plane.

[0024] According to some embodiments of this application, the relay further includes two conductive elements, one end of each of the two conductive elements being connected to the lead-out terminals of the two contact components, and extending from their respective lead-out terminals along the first direction toward the direction away from the corresponding moving contact.

[0025] According to some embodiments of this application, the relay further includes: The driving part is connected to the two movable ends and is used to drive the movable ends to move relative to the corresponding connecting ends, so as to cause the moving contact on the movable end to contact or separate from the stationary contact on the corresponding connecting end.

[0026] According to some embodiments of this application, the driving portion is located on one side of the two movable ends facing away from the two connecting ends.

[0027] According to some embodiments of this application, the driving portion includes: The armature drive section is connected to the movable ends of the two contact components; The coil assembly is electromagnetically coupled to the armature drive portion and is configured to drive the armature drive portion to move linearly along the first direction in response to an input signal, thereby causing the movable end to move.

[0028] According to some embodiments of this application, the armature driving part has two driving arms of equal length and symmetrically arranged, and the two driving arms are respectively connected to the two movable ends.

[0029] According to some embodiments of this application, the axial direction of the coil assembly is perpendicular to the first direction.

[0030] According to some embodiments of this application, the contact assembly further includes an elastic element disposed between the movable spring and the armature drive portion. The elastic element is configured to store energy and provide contact pressure to the movable spring when both contact assemblies are in a closed state. The movable end of the elastic element and / or the movable spring is provided with a limiting portion for limiting the range of motion of the armature drive portion along the extension direction of the connection end.

[0031] According to some embodiments of this application, the relay further includes a housing, the driving portion is disposed within the housing, the coil assembly is provided with a yoke; the armature driving portion is provided with a guide portion, and the housing and / or the yoke is provided with a guide engagement portion that guides and engages with the guide portion along the linear movement direction of the armature driving portion.

[0032] According to some embodiments of this application, the armature driving portion contacts the housing and / or the yoke only at the mating position of the guide portion and the guide mating portion, while the remaining positions of the armature driving portion form a gap with the inner wall of the housing.

[0033] According to some embodiments of this application, the armature driving portion is provided with the guide portion on at least one side of the two sides along the width direction of the moving spring. One of the guide portion and the guide mating portion is a guide post and the other is a groove. The axial direction of the guide post is parallel to the width direction of the moving spring. The groove extends along the linear movement direction of the armature driving portion. The end of the guide post is slidably disposed in the groove.

[0034] According to some embodiments of this application, the end of the guide post is formed into a spherical surface, and the groove has a groove wall adapted to the spherical surface.

[0035] According to some embodiments of this application, the corresponding moving contact and the stationary contact are defined as a contact group, and the relay further includes a short-circuit protection structure, and at least one of the contact groups is provided with the short-circuit protection structure; The short-circuit protection structure includes a first magnetic conductor and a second magnetic conductor, which are configured to be magnetized and attract each other when the two contact components are energized, thereby applying pressure to the moving spring towards the corresponding stationary contact or keeping the moving spring in contact with the corresponding stationary contact.

[0036] According to some embodiments of this application, the first magnetic conductor is fixedly disposed relative to the stationary contact, and the second magnetic conductor is fixedly connected to the moving spring.

[0037] According to some embodiments of this application, when the corresponding moving contact and the stationary contact are in contact, the second magnetic conductor is configured to move toward the first magnetic conductor when the current value flowing through the contact assembly is greater than or equal to a threshold, so as to reduce the magnetic gap between it and the first magnetic conductor.

[0038] According to some embodiments of this application, the relay further includes a driving portion, which includes an armature driving portion and a coil assembly. The armature driving portion is connected to the movable ends of the two contact assemblies. The coil assembly is electromagnetically coupled to the armature driving portion and is configured to drive the armature driving portion to move linearly in response to an input signal, so as to cause the moving contact on the movable end to contact or separate from the stationary contact on the corresponding connection end. The first magnetic conductor is fixedly disposed relative to the stationary contact, and the second magnetic conductor is movably disposed on the armature driving part along the movement direction of the armature driving part. When the corresponding moving contact and the stationary contact are in a non-contact state, and when the corresponding moving contact and the stationary contact are in contact and the current value of the contact component is less than the threshold, the second magnetic conductor is held against the armature driving part along the disconnection direction of the moving contact based on elastic or magnetic force. When the corresponding moving contact and the stationary contact are in contact and the current value of the contact component is greater than or equal to the threshold, the second magnetic conductor overcomes the elastic or magnetic force and moves toward the first magnetic conductor to reduce the magnetic gap between them.

[0039] According to some embodiments of this application, the relay further includes a driving portion, which includes an armature driving portion and a coil assembly. The armature driving portion includes an armature assembly and a pusher. One end of the pusher is connected to the movable end of the moving spring, and the other end is connected to the armature assembly and forms a clearance fit along a first direction. The coil assembly is electromagnetically coupled to the armature portion and is configured to drive the armature portion to move linearly in response to an input signal, so as to drive the moving contact on the movable end to contact or separate from the corresponding stationary contact. The second magnetic conductor is fixed to the pusher.

[0040] An embodiment of the above application has at least the following advantages or beneficial effects: In the relay of this application embodiment, the movable ends of the two contact components are respectively disposed on the same side of the connection end corresponding to the movable end of the two contact components. The movable ends of the two contact components are driven by the same driving part to realize the switching of the two contact components from a closed state to an open state and from an open state to a 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 connection end of the two contact components. In this way, only enough space needs to be reserved on one side of the connection end of the two contact components along the first direction, instead of reserving space on both sides of the connection end of the two contact components along the first direction. This makes the structure of the two contact components and the driving part 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. Attached Figure Description

[0041] 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.

[0042] Figure 1 The diagram shown is a perspective view of a relay according to the first embodiment of this application.

[0043] Figure 2 The diagram shown is an exploded view of the relay according to the first embodiment of this application.

[0044] Figure 3 The diagram shown is a three-dimensional schematic of the relay's drive portion and contact portion after assembly according to the first embodiment of this application.

[0045] Figure 4 The diagram shown is a schematic diagram of the relay in the first embodiment of this application when the contact portion is in a closed state.

[0046] Figure 5 The diagram shown is a schematic diagram of the relay in the first embodiment of this application when the contact portion is in the open state.

[0047] Figure 6 What is shown is Figure 3 An exploded view of the two moving springs.

[0048] Figure 7 The diagram shown is a magnetic circuit diagram of the armature driving part of the relay in the first embodiment of this application when it is in the magnetic holding state in the first position.

[0049] Figure 8 What is shown is Figure 7A schematic diagram of the magnetic circuit when the coil winding receives the first pulse electrical signal.

[0050] Figure 9 The diagram shows the magnetic circuit when the armature drive section moves to the second position.

[0051] Figure 10 The diagram shows the magnetic circuit of the armature drive section when it is in the magnetic holding state in the second position.

[0052] Figure 11 The diagram shows the magnetic circuit when the coil winding receives the second pulse electrical signal.

[0053] Figure 12 The diagram shows the magnetic circuit when the armature drive section moves to the first position.

[0054] Figure 13 The diagram shown is a schematic diagram of a relay according to the second embodiment of this application.

[0055] Figure 14 The diagram shown is a schematic diagram of a relay according to the third embodiment of this application.

[0056] Figure 15 The diagram shown is a schematic diagram of a relay according to the fourth embodiment of this application.

[0057] Figure 16 The diagram shown is a schematic diagram of a relay according to the fifth embodiment of this application.

[0058] Figure 17 What is shown is Figure 16 A schematic diagram of the second magnetic conductor and the driving component after assembly.

[0059] Figure 18 The diagram shown illustrates the guiding fit between the guide section and the guide mating section.

[0060] The reference numerals in the attached figures are explained as follows: 100. Outer shell; 101. Guide mating part; 110. First shell; 120. Second shell; 121. Base plate; 122. Annular side plate; 1221. First side plate; 1222. Second side plate; 200. Contact portion; 210. First contact assembly; 211. First movable spring; 2111. First connecting 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 connecting 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; 230. Limiting portion; 300. Drive section; 301. Guide section; 310. Armature drive section; 310a. Armature assembly; 310b. Pusher; 311. First armature; 3111. First engaging part; 3112. Second engaging part; 312. Second armature; 3121. Third engaging part; 3122. Fourth engaging part; 313. First permanent magnet; 314. Second permanent magnet; 315. Encapsulation component; 3151. Drive arm; 316. First magnetic pole; 317. Second magnetic pole; 320. Coil assembly; 321. Coil frame; 322. Coil winding; 323. Iron core; 324. First yoke; 3241. First magnetic drive end; 325. Second yoke; 3251. Second magnetic drive end; 326. Signal input terminal; 410. First magnetic conductor; 420. Second magnetic conductor; 500. Conductive components. Detailed Implementation

[0061] 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.

[0062] 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.

[0063] 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.

[0064] First Embodiment

[0065] like Figure 1 and Figure 2 As 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 driving portion 300, with the contact portion 200 and the driving portion 300 disposed within the housing 100. The contact portion 200 has a closed state and an open state, and the driving portion 300 is configured to drive the contact portion 200 to switch from the closed state to the open state and from the open state to the closed state.

[0066] In one embodiment, the driving portion 300 may employ an electromagnetic drive. For example, the driving portion 300 may include an armature driving portion 310 and a coil assembly 320. The armature driving portion 310 is movably disposed within the second housing 120 and connected to the contact portion 200, for driving 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 driving portion 310, and the coil assembly 320 is configured to drive the armature driving portion 310 to move in response to an input signal.

[0067] In another embodiment, the drive unit 300 may be driven by a motor.

[0068] 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 driving 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.

[0069] As an example, the second housing 120 is a cuboid shape with an opening, and the contact portion 200 and the driving portion 300 are installed inside the second housing 120 through the opening. The first housing 110 is plate-shaped and is fastened to the opening of the second housing 120 to form a hollow cuboid.

[0070] 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 driving portion 300.

[0071] like Figure 3 As shown, the contact portion 200 includes two contact components. Each contact component includes a moving spring, a stationary contact, a moving contact, and a lead-out terminal. The moving spring has a connecting end and a movable end. The stationary contact is mounted on the connecting end, and the stationary contact, the connecting end, and the lead-out terminal are connected in a fixed manner. The moving contact is mounted on the movable end. The moving contact of any one contact component corresponds to the stationary contact of the other contact component, and when the corresponding moving contacts are in contact with the stationary contacts, the two moving springs are connected in parallel. Furthermore, in the closed state, the two contact components are connected only through the corresponding moving and stationary contacts, which avoids affecting the contact resistance due to contact at other positions of the two contact components, and avoids problems such as burning and welding.

[0072] It is worth noting that, in this embodiment, the connecting end and movable end specifically refer to the two ends of the movable spring along its length, and not the two end faces of the non-movable spring along its length. Furthermore, the term "fixed connection" refers to multiple objects being fixedly connected, and the multiple objects cannot move relative to each other. Of course, the term "fixed connection" can also refer to multiple objects being able to produce slight relative movement. For example, in this embodiment, the stationary contact can produce slight movement relative to the connecting end, and this slight movement of the stationary contact does not affect its contact or separation from the movable contact.

[0073] For ease of explanation, please refer to Figures 3 to 5 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, which is defined as the first moving spring 211 (see also...). Figure 6The second contact assembly 220 includes a first stationary contact 212, a first movable contact 213, and a first lead-out terminal 214. The first movable spring 211 has a first connecting end 2111 and a first movable end 2112. The first stationary contact 212 is mounted on the first connecting end 2111, and the first stationary contact 212, the first connecting end 2111, and the first lead-out terminal 214 are fixedly connected. The first movable contact 213 is mounted on the first movable end 2112. The movable spring 221, stationary contact, movable contact, and lead-out terminal included in the second contact assembly 220 are defined as the second movable spring 221 (see also...). Figure 6 The second stationary contact 223, the second moving contact 222, and the second lead-out terminal 224 are provided. The second moving spring 221 has a second connecting end 2211 and a second movable end 2212. The second stationary contact 223 is installed on the second connecting end 2211, and the second stationary contact 223, the second connecting end 2211, and the second lead-out terminal 224 are fixedly connected. The second moving contact 222 is installed on the second movable end 2212.

[0074] In one embodiment, the first connecting end 2111, the first movable end 2112, the second connecting end 2211, and the second movable end 2212 are all sheet-like structures. The first connecting end 2111 and the second connecting end 2211 are disposed on the same plane.

[0075] In this embodiment, the movable ends of the two contact components are respectively disposed on the same side of the connecting ends corresponding to the movable ends in the two contact components along a first direction. In this embodiment, the first direction is the X-axis direction.

[0076] In other words, in the X-axis direction, the position of the first movable end 2112 of the first movable spring 211 corresponds to the position of the second connecting 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 connecting end 2111 of the first movable spring 211. Furthermore, the first movable end 2112 and the second movable end 2212 are located on the same side of the first connecting end 2111 and the second connecting end 2211 along the first direction (X-axis direction), respectively.

[0077] The driving portion 300 is located on the side of the two movable ends facing away from the two connecting ends. In the embodiment of this application, the driving portion 300 is located on the side of the first movable end 2112 facing away from the second connecting end 2211, and the driving portion 300 is located on the side of the second movable end 2212 facing away from the first connecting end 2111.

[0078] In this embodiment, the driving part 300 is located on the side of the movable end facing away from the connecting end, so that the driving part 300 can be far away from the connecting end and the lead-out terminal. This is beneficial for achieving strong and weak current isolation, improving withstand voltage strength, and also helps to reduce the influence of the magnetic field generated after the connecting end and the lead-out terminal are energized on the driving part 300, thereby improving the reliability of the driving part 300.

[0079] Of course, in other embodiments, the first movable end 2112 may also be located on the side of the second connecting end 2211 facing away from the driving portion 300, and the second movable end 2212 may be located on the side of the first connecting end 2111 facing away from the driving portion 300.

[0080] The driving part 300 is connected to the movable ends of two contact components and is used to drive the movable end to move relative to the corresponding connection end, so as to drive the moving contact on the movable end to contact or separate from the stationary contact on the corresponding connection end. That is, the armature driving part 310 of the driving part 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 connection end 2211 and the second movable end 2212 to move relative to the first connection end 2111, so that the first movable end 2112 drives the first moving contact 213 to contact or separate from the second stationary contact 223 and the second movable end 2212 drives the second moving contact 222 to contact or separate from the first stationary contact 212.

[0081] It is understood that the armature drive section 310 can be fixedly connected to the two movable ends or movably connected. When the armature drive section 310 is movably connected to the two movable ends, each contact assembly also includes an elastic element disposed between the moving spring and the armature drive section 310. The elastic element is configured to store energy and provide contact pressure to the moving spring when the two contact assemblies are in the closed state. The armature drive section 310 can be connected to the two movable ends respectively through the two elastic elements.

[0082] like Figure 5 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 is connected to the armature driving part 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 is connected to the armature driving part 310.

[0083] When the relay switches from an open state to a closed state, the armature drive section 310 drives the first movable end 2112 and the second movable end 2212 to move closer to the second connecting end 2211 and the first connecting 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 drive section 310 continues to move to compress the first elastic element 215 and the second elastic element 225 until the armature drive section 310 moves to its limit position. The process of the armature drive section 310 continuing to move 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.

[0084] like Figure 6 As shown, the movable end of the elastic element and / or the movable spring is provided with a limiting part 230 for limiting the range of motion of the armature drive part 310 along the extension direction of the connecting end. The limiting part 230 can prevent the movement trajectory of the armature drive part 310 from deviating.

[0085] In an exemplary embodiment, both the first elastic member 215 and the second elastic member 225 are provided with two limiting portions 230 arranged at intervals along the extension direction of the connection end.

[0086] In a modified embodiment, the movable end of the moving reed is provided with a limiting portion 230 for restricting the armature drive portion 310 to move axially along the coil assembly.

[0087] As an example, the armature drive portion 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.

[0088] like Figure 4 As shown, when the contact portion 200 switches from the open state to the closed state, the armature driving portion 310 drives the first movable end 2112 and the second movable end 2212 to move towards the second connecting end 2211 and the first connecting 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.

[0089] like Figure 5 As shown, when the contact portion 200 switches from the closed state to the open state, the armature driving portion 310 drives the first movable end 2112 and the second movable end 2212 to move away from the second connecting end 2211 and the first connecting 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.

[0090] 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 connection end corresponding to the movable end of the two contact components, and the movable ends of the two contact components are driven by the same 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 closed or separated is located on the same side of the connection end of the two contact components. In this way, only enough space needs to be reserved on one side of the connection end of the two contact components along the first direction (X-axis direction), without reserving space on both sides of the connection end of the two contact components along the first direction (X-axis direction). This allows the structure of the two contact components and the driving part 300 to be designed more compactly 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.

[0091] like Figure 4 and Figure 5 As 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.

[0092] In one embodiment, the relay further includes two conductive elements 500 of the same length, one end of each conductive element 500 being connected to the lead-out terminals of two contact components, and extending from their respective lead-out terminals along a first direction (X-axis direction) away from the corresponding moving contact.

[0093] In this embodiment, the lead-out terminals and conductive elements 500 are both located on the side away from the coil assembly 320, which reduces the influence of the magnetic field generated when the lead-out terminals, conductive elements 500 and external components electrically connected to the conductive elements 500 are energized on the magnetic circuit between the coil assembly 320 and the armature drive portion 310, and ensures that the magnetic holding force of the armature drive portion 310 is not weakened too much.

[0094] Furthermore, since the first lead-out terminal 214 and the second lead-out terminal 224 are disposed on the same plane, and the two conductive elements 500 are respectively connected to the first lead-out terminal 214 and the second lead-out terminal 224, the two conductive elements 500 extend from their corresponding lead-out terminals along the first direction (X-axis direction) away from the corresponding moving contact. Since the connection starting points of the two conductive elements 500 are on the same plane, it is only necessary to select two conductive elements 500 of the same length to achieve the effect of flush ends of the two conductive elements 500. Compared with the prior art, which uses conductive elements 500 of different lengths due to the staggered arrangement of the connection ends of the two moving springs along the contact / separation directions of the moving contact and the stationary contact, the two conductive elements 500 of this embodiment are of the same length, saving material costs.

[0095] like Figures 4 to 6 As shown, the first movable spring 211 and the second movable spring 221 each have an overlapping area in their orthographic projections on a projection plane, and the projection plane is perpendicular to the width direction (Z-axis direction) of the movable spring.

[0096] In one embodiment, the first movable spring 211 and the second movable spring 221 are arranged alternately.

[0097] like Figure 4 As shown, 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, and the intersection portions are spaced apart from each other along the width direction (Z-axis direction) of the moving springs. Specifically, the second moving contact 222 and the first stationary contact 212 are defined as the first contact group, the first moving contact 213 and the second stationary contact 223 are defined as the second contact group, and the intersection area of ​​the first moving spring 211 and the second moving spring 221 is located between the first group of contacts and the second group of contacts.

[0098] 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.

[0099] The moving spring also has a bent section, and the connecting end is connected to the movable end through the bent section, so that the moving contact and the stationary contact on the moving spring are staggered in the first direction (X-axis direction); the bent sections of the two moving springs are arranged crosswise.

[0100] In one embodiment, the first movable spring 211 has a first bent section 2113, a first connecting end 2111 is connected to one end of the first bent section 2113, and a first movable end 2112 is connected to the other end of the first bent section 2113. The first connecting end 2111 is connected to the first movable end 2112 through the first bent section 2113, so that the first stationary contact 212 and the first movable contact 213 on the first movable spring 211 are staggered in a first direction (X-axis direction). The second movable spring 221 has a second bent section 2213, a second connecting end 2211 is connected to one end of the second bent section 2213, and a second movable end 2212 is connected to the other end of the second bent section 2213. The second connecting end 2211 is connected to the second movable end 2212 through the second bent section 2213. The second moving contact 222 and the second stationary contact 223 on the second moving spring 221 are staggered in the first direction (X-axis direction). The first bent section 2113 and the second bent section 2213 are arranged crosswise.

[0101] In the embodiments of this application, on the one hand, the movable end of the movable spring is connected to the connecting end through a bent section. 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 manner through two bent sections, and most of the area of ​​the movable springs can be used to form the connecting end and the movable end, which can improve the magnetic attraction force and the short-circuit resistance.

[0102] It is understood that the shape of each bend can be U-shaped, V-shaped, C-shaped or polygonal, etc., and this application does not limit it.

[0103] In one embodiment, the first connecting end 2111, the first movable end 2112, the second connecting 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 connecting end 2111 of the first movable spring 211 is located is parallel or nearly parallel to the plane where the first movable end 2112 is located, and the plane where the second connecting end 2211 of the second movable spring 221 is located is parallel or nearly parallel to the plane where the second movable end 2212 is located.

[0104] In the embodiments of this application, the plane where the connecting end of the movable spring is located is parallel or nearly parallel to the plane where the movable end is located, making the structure formed by the cross arrangement of the first movable spring 211 and the second movable spring 221 more compact and further reducing the space occupied inside the relay.

[0105] "Nearly parallel" means that the angle between the two planes is less than 10 degrees.

[0106] 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.

[0107] The two contact components have movable springs with notches at least at the locations where bent sections are provided, and on one side along the width direction (Z-axis direction) of the movable springs. At least a portion of each movable spring along the Z-axis direction is embedded in the notch of the other movable spring, and the two bent sections are spaced apart from each other. A portion of the notch of the movable spring is located at the connecting end of the movable spring, and another portion is located at the bent section of the movable spring.

[0108] like Figure 6As shown, the first bent segment 2113 has a portion of the first notch 2114, the first connecting end 2111 has another portion of the first notch 2114, the second bent segment 2213 has a portion of the second notch 2214, the second connecting end 2211 has another portion of the second notch 2214, at least a portion of the first bent segment 2113 is embedded in the second notch 2214, and at least a portion of the second bent segment 2213 is embedded in the first notch 2114. Furthermore, the first bent segment 2113 and the second bent segment 2213 are spaced apart from each other.

[0109] In this embodiment, the two moving springs are spaced apart, allowing two currents to flow independently through them. This creates a reliable parallel circuit structure, ensuring 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 (Z-axis direction) is smaller, further facilitating product miniaturization. Moreover, the notches on both moving springs help ensure structural consistency, maximizing the consistency of their contact and disconnection performance. Additionally, part of the notch is located at the bend, and the other part at the connection end, preventing interference between the bend and the connection end of the other moving spring when it moves.

[0110] like Figure 6 As shown, each bent segment has a first segment 2113a and a second segment 2113b. One end of the first segment 2113a is connected to the movable end, one end of the second segment 2113b is connected to the other end of the first segment 2113a, and the other end of the second segment 2113b is connected to the connecting end. Along the width direction (Z-axis direction) of the movable spring, the size of the first segment 2113a is larger than the size of the second segment 2113b; and the sides where the first segment 2113a and the second segment 2113b meet form at least a partial edge of the notch.

[0111] In this embodiment, although a notch is formed in the moving spring, the size of the first segment 2113a is larger than that of the second segment 2113b, which prevents the current-carrying area of ​​the moving spring from being reduced too much and avoids excessive temperature rise at the notch location. At the same time, it also prevents the repulsive force at the intersection of the two bent segments from being reduced too much, thereby ensuring the amount of rubbing and anti-adhesion between the moving contact and the stationary contact.

[0112] In one embodiment, when the moving contact and the stationary contact are in contact, the current directions of the two first segments 2113a are opposite along the first direction.

[0113] In the embodiments of this application, when the moving contact and the stationary contact are in contact, since the two first segments 2113a are parallel to each other, an electromagnetic repulsion force can be generated between the two first segments 2113a when the contact portion 200 is energized. This repulsion force helps the moving and stationary contacts to rub against each other when disconnected, thereby preventing the contacts from sticking together. Especially when the relay is used in a high-current environment, the electromagnetic repulsion force generated between the two first segments 2113a is even greater, and the anti-sticking effect is particularly prominent.

[0114] Furthermore, the two first segments 2113a are arranged parallel to the first plane, and the first plane is perpendicular to the arrangement direction (Y-axis direction) of the two connecting ends.

[0115] In one embodiment, the movable spring is composed of a single spring or formed by stacking at least two springs. When the movable spring is formed by stacking at least two springs, the at least two springs are spaced apart from each other in the region where the bend is located. This ensures that each spring of the movable spring has sufficient deformation space at the bend and that the springs do not collide or interfere with each other.

[0116] Please return to the reference. Figure 4 and Figure 5 The first connecting end 2111 and the second connecting end 2211 are arranged in parallel.

[0117] In one embodiment, the lead-out terminal is located on the side of the connection end facing away from the corresponding movable end. The first lead-out terminal 214 is located on the side of the first connection 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 connection end 2211 facing away from the first movable end 2112.

[0118] like Figure 2 As shown, the second housing 120 includes a base plate 121 and an annular side plate 122. The annular side plate 122 has openings at both axial ends. The base plate 121 covers one of the openings, and the first housing 110 closes the other opening. The first lead-out terminal 214 and the second lead-out terminal 224 are both connected to the annular side plate 122. A portion of the first lead-out terminal 214 extends out of the outer surface of the annular side plate 122, while the other portion is located inside the annular side plate 122. A portion of the second lead-out terminal 224 extends out of the outer surface of the annular side plate 122, while the other portion is located inside the annular side plate 122.

[0119] The ring formed by the annular side plate 122 can be a polygon, a circle, an ellipse, etc. This application does not limit it. The following description will take the annular side plate 122 forming a rectangle as an example.

[0120] The annular side plate 122 includes two first side plates 1221 and two second side plates 1222, which are alternately connected end-to-end to form a rectangular annular structure. The two first side plates 1221 are spaced apart along the axial direction of the coil assembly 320, and the two second side plates 1222 are spaced apart along the X-axis. A first lead-out terminal 214 and a second lead-out terminal 224 are respectively connected to the two first side plates 1221. A portion of the first lead-out terminal 214 extends beyond the outer surface of one of the first side plates 1221, and a portion of the second lead-out terminal 224 extends beyond the outer surface of the other first side plate 1221.

[0121] As an example, the two leads can be connected to the two first side plates 1221 respectively by snap-fit. For example, each of the corresponding leads and the first side plates 1221 has a snap-fit ​​opening. The corresponding leads and the first side plates 1221 are snapped together by the two snap-fit ​​openings and the snap-fit ​​openings restrict the displacement along the first direction.

[0122] In one embodiment, both the first side plate 1221 and the second side plate 1222 are flat plate structures, and the corresponding lead-out terminals are perpendicular to the first side plate 1221, and each lead-out terminal is parallel to the second side plate 1222.

[0123] In one embodiment, the first stationary contact 212 connects the first connecting end 2111 and the first lead-out terminal 214 by riveting, and the second stationary contact 223 connects the second connecting end 2211 and the second lead-out terminal 224 by riveting, but this is not a limitation.

[0124] In the embodiments of this application, the stationary contact, the connecting 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.

[0125] 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.

[0126] like Figure 4 and Figure 5 As shown, the coil assembly 320 is configured to drive the armature drive portion 310 to move linearly in a first direction in response to an input signal, thereby causing the first movable end 2112 and the second movable end 2212 to move.

[0127] In one embodiment, the moving direction of the armature drive portion 310 is parallel to the thickness direction (X-axis direction) of the first connecting end 2111.

[0128] Compared to the rotating design of the armature drive part in the prior art, the armature drive part 310 of this application embodiment is designed to move in 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.

[0129] like Figure 3 and Figure 7 As shown, the armature drive section 310 includes an armature assembly 310a and two drive arms 3151. The armature assembly 310a includes two armatures, two permanent magnets, and a package 315, which connects the two armatures and the two permanent magnets into a single unit. The two drive arms 3151 are of equal length and symmetrically arranged, and each drive arm 3151 is connected to a different movable end.

[0130] In one embodiment, the package 315 connects the two armatures and two permanent magnets into a single integral part via injection molding, but this is not a limitation. The two drive arms 3151 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. 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.

[0131] In one embodiment, one drive arm 3151 is positioned axially above the coil assembly 320 between the two limiting portions 230 of the first elastic member 215, and the other drive arm 3151 is positioned axially above the coil assembly 320 between the two limiting portions 230 of the second elastic member 225.

[0132] Of course, each elastic element may also have only one limiting part 230, and the limiting parts 230 of the two elastic elements may be respectively provided on the side facing each other or on the side facing away from each other of the two drive arms 3151.

[0133] like Figure 4 and Figure 5 As shown, in one embodiment, the axial direction of the coil assembly 320 is perpendicular to the first direction (i.e., the X-axis direction). This design further reduces the volume in the driving direction, making it more conducive to product miniaturization.

[0134] like Figure 7As shown, the coil assembly 320 includes a coil frame 321, a coil winding 322, an iron core 323, a first yoke 324, a second yoke 325, and three signal input terminals 326. The coil frame 321 has a central hole, and the iron core 323 passes through the central hole. The coil winding 322 is connected to the three signal input terminals 326, which are used to receive pulse electrical signals. The first yoke 324 and the second yoke 325 are respectively connected to the two axial ends of the iron core 323. The end of the first yoke 324 away from the iron core 323 forms a first magnetic drive end 3241, and the end of the second yoke 325 away from the iron core 323 forms a second magnetic drive end 3251. The first magnetic drive end 3241 and the second magnetic drive end 3251 are arranged along the axial direction of the iron core 323 and extend close to each other. That is, in this embodiment, the coil assembly 320 is provided with a yoke.

[0135] When the coil winding 322 is excited by a pulsed electrical signal, it reverses the polarity temporarily formed by the first magnetic drive end 3241 and the second magnetic drive end 3251 to switch the engagement of different parts of the two armatures and drive the armature drive part 310 to move. In this embodiment, for ease of explanation, it is assumed that when the signal input terminal 326 receives the first pulsed electrical signal, the coil winding 322 generates a first magnetic field, and the first magnetic drive end 3241 temporarily has an N pole polarity, and the second magnetic drive end 3251 temporarily has an S pole polarity. After the first pulsed electrical signal disappears, the first magnetic field of the coil winding 322 disappears, and the first magnetic drive end 3241 and the second magnetic drive end 3251 no longer have polarities generated by the first magnetic field; when the signal input terminal 326 receives a second pulsed electrical signal with a current direction opposite to that of the first pulsed electrical signal, the coil winding 322 generates a second magnetic field, reversing the polarity of the first magnetic drive end 3241 to have an S pole polarity, and reversing the polarity of the second magnetic drive end 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 end 3241 and the second magnetic drive end 3251 no longer have polarity generated based on the second magnetic field.

[0136] like Figure 7 As shown, the armature drive section 310 is driven by the coil assembly 320 to move between a first position and a second position. When the armature drive section 310 moves to the first position, the relay is in the open state. When the armature drive section 310 moves to the second position, the relay is in the closed state.

[0137] 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.

[0138] The first armature 311 and the second armature 312 are arranged crosswise. The first armature 311 is in contact with the first magnetic poles 316 of the two permanent magnets. The second armature 312 is in contact with the second magnetic poles 317 of the two permanent magnets. 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 position of the first attracting portion 3111 corresponds to the position of the fourth attracting portion 3122, and a first permanent magnet 313 is provided between the first attracting portion 3111 and the fourth attracting portion 3122. The position of the second attracting portion 3112 corresponds to the position of the third attracting portion 3121, and a second permanent magnet 314 is provided between the second attracting portion 3112 and the third attracting portion 3121.

[0139] like Figure 7 As shown, the first magnetic drive end 3241 is located between the first attraction part 3111 and the fourth attraction part 3122, and the second magnetic drive end 3251 is located between the second attraction part 3112 and the third attraction part 3121.

[0140] like Figure 7As shown, when the armature driving section 310 is in the magnetic holding state in the first position, the first engaging part 3111 engages the first magnetic driving end 3241, and the third engaging part 3121 engages the second magnetic driving end 3251. At this time, the driving section 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 driving end 3241, the first yoke 324, the iron core 323, the second yoke 325, the second magnetic driving end 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, the first attraction part 3111, the first magnetic drive end 3241, the first yoke 324, the iron core 323, the second yoke 325, the second magnetic drive end 3251, the third attraction part 3121, and the second magnetic pole 317 of the second permanent magnet 314 back to the first magnetic pole 316 of the second permanent magnet 314, without any air gap in between, and passes through the entire coil assembly 320. Therefore, when the armature drive part 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 end 3241, and between the third attraction part 3121 and the second magnetic drive end 3251, so that the armature drive part 310 is held in the first position relative to the coil assembly 320.

[0141] like Figure 8As 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 end 3241 to temporarily have an N pole polarity and the second magnetic drive end 3251 to temporarily have an S pole polarity. Since the first magnetic drive end 3241 and the first attraction part 3111 have the same polarity (N pole), the first magnetic drive end 3241 generates a magnetic repulsion force on the first attraction part 3111; since the second magnetic drive end 3251 and the third attraction part 3121 have the same polarity (S pole), the second magnetic drive end 3251 generates a magnetic repulsion force on the third attraction part 3121. Furthermore, the drive section 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 end 3241, passes through the travel air gap, 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 travel air gap, the second magnetic drive end 3251, the second yoke 325, the iron core 323, and the first yoke 324, and returns to the first magnetic drive end 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 end 3241, passes through the travel air gap, the fourth attraction part 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 part 3112, the travel air gap, the second magnetic drive end 3251, the second yoke 325, the iron core 323, and the first yoke 324, and returns to the first magnetic drive end 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 end 3241 exert a magnetic repulsive force on the first attraction part 3111, and the second magnetic drive end 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 end 3241 generates a magnetic attraction force on the fourth attraction part 3122, and the second magnetic drive end 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 driving part 310, driving the armature driving part 310 to move from the first position to the second position.

[0142] like Figure 9As shown, when the armature drive section 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 end 3241 still temporarily has the N pole polarity, and the second magnetic drive end 3251 still temporarily has the S pole polarity. At this time, the drive section 300 forms two closed magnetic circuits, namely the third closed magnetic circuit and the fourth closed magnetic circuit. The third closed magnetic circuit starts from the first magnetic drive end 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 end 3251, the second yoke 325, the iron core 323, and the first yoke 324 and returns to the first magnetic drive end 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 end 3241, passes through the fourth attraction part 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 part 3112, the second magnetic drive end 3251, the second yoke 325, the iron core 323, and the first yoke 324, and returns to the first magnetic drive end 3241, without any air gap in between, and passes through the entire coil assembly 320. Therefore, when the armature drive part 310 just moves 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 end 3241 and the fourth attraction part 3122, and between the second magnetic drive end 3251 and the second attraction part 3112.

[0143] like Figure 10 As shown, when the first pulse electrical signal disappears, the first magnetic field disappears, and the first magnetic drive end 3241 and the second magnetic drive end 3251 no longer have 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 9 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 9 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 end 3241 and between the second attraction part 3112 and the second magnetic drive end 3251, and the armature drive part 310 is held in the second position relative to the coil assembly 320.

[0144] like Figure 11As 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 end 3241 to temporarily have an S pole polarity, and the second magnetic drive end 3251 to temporarily have an N pole polarity. Since the first magnetic drive end 3241 and the fourth attraction part 3122 have the same polarity, both being S poles, the first magnetic drive end 3241 generates a magnetic repulsion force on the fourth attraction part 3122; since the second magnetic drive end 3251 and the second attraction part 3112 have the same polarity, both being N poles, the second magnetic drive end 3251 generates a magnetic repulsion force on the second attraction part 3112. Furthermore, the drive section 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 end 3251, passes through the travel air gap, the third attraction part 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 part 3111, the travel air gap, the first magnetic drive end 3241, the first yoke 324, the iron core 323, and the second yoke 325, and returns to the second magnetic drive end 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 end 3251 through the travel air gap, the third attraction part 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 part 3111, the travel air gap, the first magnetic drive end 3241, the first yoke 324, the iron core 323, and the second yoke 325 back to the second magnetic drive end 3251. 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 second pulse electrical signal, not only does the first magnetic drive end 3241 exert a magnetic repulsive force on the fourth attraction part 3122, and the second magnetic drive end 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 end 3241 generates a magnetic attraction force on the first attraction part 3111, and the second magnetic drive end 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 drive part 310, pushing the armature drive part 310 to move from the second position to the first position.

[0145] like Figure 12 As shown, when the armature drive section 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 end 3241 still temporarily has the S pole polarity, and the second magnetic drive end 3251 still temporarily has the S pole polarity. At this time, the drive section 300 still exists. Figure 7 The first and second closed magnetic circuits are shown, wherein the first closed magnetic circuit can be considered to originate from the second magnetic drive end 3251, and its path is similar to... Figure 7 The path of the first closed magnetic loop shown is the same; the second closed magnetic loop can be considered to start from the second magnetic drive end 3251, and its path is the same as... Figure 7 The path of the second closed magnetic circuit shown is the same. Therefore, when the armature drive part 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 end 3241 and the first attraction part 3111, and between the second magnetic drive end 3251 and the third attraction part 3121.

[0146] When the second pulse electrical signal disappears, the second magnetic field disappears, and the first magnetic drive end 3241 and the second magnetic drive end 3251 no longer have the polarity generated by the second magnetic field. At this time, the armature drive section 310... Figure 7 As shown, it is in a magnetically held state in the first position.

[0147] In one embodiment, the armature drive portion 310 is provided with a guide portion 301, and the housing 100 and / or the yoke is provided with a guide engagement portion 101 that guides and engages with the guide portion 301 along the linear movement direction of the armature drive portion 310.

[0148] like Figure 18 As shown, in this embodiment, the guide part 301 and the guide engagement part 101 guide and engage, so that the armature drive part 310 can move according to a preset trajectory, preventing the movement trajectory of the armature drive part 310 from deviating.

[0149] As an example, the armature drive portion 310 has a guide portion 301 on at least one side of the two sides along the width direction (Z-axis direction) of the moving spring.

[0150] In one embodiment, the armature drive portion 310 contacts the housing 100 and / or the yoke only at the mating position of the guide portion 301 and the guide mating portion 101, while gaps are formed between the remaining positions of the armature drive portion 310 and the inner wall of the housing 100. The armature drive portion 310 is supported by the guide mating portion 101, so that the guide portion 301 and the guide mating portion 101 generate sliding friction during the movement of the armature drive portion 310. Compared with the sliding engagement between the armature drive portion 310 and one inner surface of the housing 100, this embodiment significantly reduces the contact area between the armature drive portion 310 and the housing 100, thereby reducing the movement resistance and preventing jamming during the movement of the armature drive portion 310. On the other hand, since the movement resistance of the armature drive portion 310 is reduced, the driving force required for the movement of the armature drive portion 310 is reduced, thereby saving energy consumption and reducing the size of the drive portion, which is beneficial for product miniaturization design.

[0151] In an exemplary embodiment, the guide portion 301 and the guide mating portion 101 are respectively a guide post and a groove. The axial direction of the guide post is parallel to the width direction (Z-axis direction) of the moving spring, and the groove extends along the linear motion direction (X-axis direction) of the armature drive portion 310. The end of the guide post is slidably disposed in the groove.

[0152] In one exemplary embodiment, the end of the guide post is shaped into a spherical surface, and the groove has groove walls adapted to the spherical surface.

[0153] In this embodiment, the guide post and the groove wall adopt a spherical fit. On the one hand, if an assembly error occurs during the assembly of the armature drive part 310, the adaptive adjustment of the spherical contact allows the armature drive part 310 to automatically fine-tune to the correct assembly position, ensuring a stable contact state between the guide post and the groove wall. On the other hand, the arc-shaped surface of the sphere can effectively disperse the contact pressure, avoid local stress overload, and thus prevent wear on the guide post and / or groove wall during the reciprocating movement of the armature drive part 310. Furthermore, the spherical fit can avoid fluctuations in sliding resistance caused by changes in the contact state between the guide post and the groove wall, thereby ensuring the smoothness of the movement of the armature drive part 310.

[0154] Second Embodiment

[0155] like Figure 13 As shown, the similarities between the relay of the second embodiment and the relay of the first embodiment will not be repeated here, but the differences are as follows: The relay also includes a short-circuit protection structure 400, and at least one of the two contact groups is provided with the short-circuit protection structure 400. The short-circuit protection structure 400 includes a first magnetic conductor 410 and a second magnetic conductor 420, which are configured to be magnetized and attract each other when the two contact components are energized, thereby applying pressure to the moving reed towards the corresponding stationary contact or keeping the moving reed in contact with the corresponding stationary contact. Specifically, when the first magnetic conductor 410 and the second magnetic conductor 420 attract each other, they can directly or indirectly apply pressure to the moving reed towards the corresponding stationary contact. In the case of indirect pressure application, this can be achieved by applying pressure towards the corresponding stationary contact to the armature drive portion or the elastic element.

[0156] The first magnetic conductor 410 is mounted on the first contact assembly 210, and the first magnetic conductor 410 is located on the side of the first connecting end 2111 of the first contact assembly 210 facing away from the second movable end 2212 of the second contact assembly 220. The second magnetic conductor 420 is mounted on the second contact assembly 220, and the second magnetic conductor 420 is located on the side of the second movable end 2212 of the second contact assembly 220 facing away from the first connecting end 2111 of the first contact assembly 210. The first magnetic conductor 410 and the second magnetic conductor 420 are used to form a magnetic circuit.

[0157] In the embodiments of this application, the first magnetic conductor 410 and the second magnetic conductor 420 form an anti-short-circuit ring. When the short-circuit current flows through the first contact component 210 and the second contact component 220, the first magnetic conductor 410 and the second magnetic conductor 420 generate a magnetic attraction force along the contact pressure direction based on the magnetic field generated by the first contact component 210 and the second contact component 220. This magnetic attraction force can resist the electric repulsion force generated between the moving and stationary contacts due to the short-circuit current, and prevent the moving and stationary contacts from being momentarily disconnected.

[0158] In one embodiment, the first magnetic conductor 410 and the second magnetic conductor 420 can be in the shape of a line or a U. The first magnetic conductor 410 and the second magnetic conductor 420 can be made of soft magnetic materials such as iron, cobalt, nickel and their alloys. This application does not make any special limitation in this regard.

[0159] In one embodiment, at least one of the first magnetic conductor 410 and the second magnetic conductor 420 is U-shaped. By designing at least one of the first magnetic conductor 410 and the second magnetic conductor 420 as U-shaped, the magnetic gap between the first magnetic conductor 410 and the second magnetic conductor 420 can be shortened and a magnetic circuit can be formed, thereby increasing the magnetic attraction force and improving the short-circuit resistance.

[0160] like Figure 13 As shown, in one embodiment, the first magnetic conductor 410 is connected to the first connection end 2111 and the first stationary contact 212 of the first contact assembly 210. The second magnetic conductor 420 is connected to the second movable end 2212 and the second movable contact 222 of the second contact assembly 220.

[0161] In this embodiment, the first magnetic conductor 410 is connected to the first connecting end 2111 and the first stationary contact 212. When assembling the first connecting end 2111 and the first stationary contact 212, the first magnetic conductor 410 can be assembled simultaneously. Similarly, the second magnetic conductor 420 is connected to the second movable end 2212 and the second movable contact 222. When assembling the second movable end 2212 and the second movable contact 222, the second magnetic conductor 420 can be assembled simultaneously. Therefore, the assembly efficiency of the contact assembly and the magnetic conductor is significantly improved.

[0162] In addition, the anti-short-circuit ring formed by the first magnetic conductor 410 and the second magnetic conductor 420 acts directly on the position of the moving and stationary contacts, so that the magnetic attraction force is maximized to form contact pressure, and the moving and stationary contacts are prevented from breaking instantly.

[0163] In one embodiment, the first stationary contact 212 connects the first connecting end 2111 and the first magnetic conductor 410 by riveting, and the second movable contact 222 connects the second movable end 2212 and the second magnetic conductor 420 by riveting, but this is not a limitation.

[0164] Of course, in other embodiments, the first magnetic conductor 410 may not be connected to the first stationary contact 212, but the first magnetic conductor 410 may be connected to the first lead-out terminal 214.

[0165] Third Embodiment

[0166] like Figure 14 As shown, the similarities between the relay of the third embodiment and the relay of the second embodiment will not be repeated here, but the differences are as follows: The first magnetic conductor 410 is disposed on the portion of the first connection end 2111 of the first contact assembly 210 where the first stationary contact 212 is not disposed. The second magnetic conductor 420 is disposed on the portion of the second movable end 2212 of the second contact assembly 220 where the second movable contact 222 is not disposed.

[0167] Fourth embodiment

[0168] like Figure 15 As shown, the similarities between the relay of the fourth embodiment and the relay of the second embodiment will not be repeated here, but the differences are as follows: The first magnetic conductor 410 is mounted on the first contact assembly 210, and the first magnetic conductor 410 is located on the side of the first connecting end 2111 of the first contact assembly 210 facing away from the second movable end 2212 of the second contact assembly 220. The second magnetic conductor 420 is disposed on the armature driving part 310, and the second magnetic conductor 420 is located on the side of the first connecting end 2111 of the first contact assembly 210 facing the second movable end 2212 of the second contact assembly 220.

[0169] In this embodiment of the application, the second magnetic conductor 420 is disposed on the armature driving part 310, which can prevent the armature driving part 310 from moving in the direction of contact disconnection due to the transmission of the electric repulsive force formed between the moving and stationary contacts to the armature driving part 310, ultimately causing the moving and stationary contacts to disconnect.

[0170] The first magnetic conductor 410 can be fixedly installed on the first lead-out terminal 214 of the first contact assembly 210, or it can be fixedly installed on the first connection end 2111 of the first contact assembly 210. This application does not limit this.

[0171] The second magnetic conductor 420 can be disposed on the drive arm 3151 of the armature drive section 310. Furthermore, the second magnetic conductor 420 and the drive arm 3151 can be integrally injection molded, but this is not a limitation.

[0172] Fifth Embodiment

[0173] like Figure 16 and Figure 17 As shown, the similarities between the relay of the fifth embodiment and the relay of the fourth embodiment will not be repeated here, but the differences are as follows: When the two contact components are in the closed state, the magnetic spacing between the first magnetic conductor 410 and the second magnetic conductor 420 can also be designed to be variable.

[0174] For example, when the corresponding moving contact and stationary contact are in contact, the second magnetic conductor 420 is configured to move toward the first magnetic conductor 410 when the current value flowing through the contact assembly is greater than or equal to a threshold, so as to reduce the magnetic gap between it and the first magnetic conductor 410.

[0175] When the current flowing through the contact component is greater than or equal to a threshold, such as when a short circuit occurs in the external circuit and the current is greater than or equal to 2000A, the current value is relatively large. In this state, the second magnetic conductor 420 moves closer to the first magnetic conductor 410 to reduce the magnetic gap between the second magnetic conductor 420 and the first magnetic conductor 410, thereby ensuring that the relay has a high short-circuit withstand capability.

[0176] In one embodiment, the armature drive portion 310 includes an armature assembly 310a and a pusher 310b. The armature assembly 310a is electromagnetically coupled to the coil assembly 320. One end of the pusher 310b is connected to the movable end of the second contact assembly 220, and the other end is connected to the armature assembly 310a and forms a clearance fit along the first direction. The armature assembly 310a is driven to the movable end of the moving spring through the pusher 310b. The second magnetic conductor 420 is connected to the pusher 310b. For example, the second magnetic conductor 420 and the pusher 310b are connected by an integral injection molding method.

[0177] In this embodiment, since the other end of the pusher 310b is in clearance fit with the armature assembly 310a, there is a gap between the other end of the pusher 310b and the armature assembly 310a. When a short-circuit current occurs, the instantaneously increased magnetic field can cause the second magnetic conductor 420 to move closer to the first magnetic conductor 410 based on this gap, thereby further shortening the distance between the second magnetic conductor 420 and the first magnetic conductor 410, thus obtaining a greater magnetic attraction force, which is beneficial to improving the short-circuit resistance.

[0178] In another embodiment, the first magnetic conductor 410 is fixedly disposed relative to the stationary contact, and the second magnetic conductor 420 is movably mounted on the armature driving portion 310 along the movement direction of the armature driving portion 310, for example, movably mounted on the driving arm 3151 along the first direction; when the corresponding moving contact and the stationary contact are in a non-contact state and when the corresponding moving contact and the stationary contact are in a contact state and the current value of the contact component is less than the threshold, the second magnetic conductor 420 is held against the armature driving portion 310 along the disconnection direction of the moving contact based on elastic or magnetic action; when the corresponding moving contact and the stationary contact are in a contact state and the current value of the contact component is greater than or equal to the threshold, the second magnetic conductor 420 overcomes the elastic or magnetic action and moves toward the first magnetic conductor 410 to reduce the magnetic gap between it and the first magnetic conductor 410.

[0179] Among them, "disconnection direction" refers to the direction in which the moving contact moves away from the stationary contact.

[0180] In summary, the relays of the embodiments of this application have at least the following advantages and beneficial effects: In the relay of this application embodiment, the movable ends of the two contact components are respectively disposed on the same side of the connection end corresponding to the movable end of the two contact components. The movable ends of the two contact components are driven by the same 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 closed or separated is located on the same side of the connection end of the two contact components. In this way, only enough space needs to be reserved on one side of the connection end of the two contact components along the first direction, instead of reserving space on both sides of the connection end of the two contact components along the first direction. This makes the structure of the two contact components and the 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.

[0181] 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.

[0182] 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 or a movable connection, an electrical 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.

[0183] 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.

[0184] 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.

[0185] 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: Two contact components are provided, each of which includes a movable spring, a stationary contact, a moving contact, and a lead-out terminal. The movable spring has a connecting end and a movable end, and the stationary contact, the connecting end, and the lead-out terminal are connected. The moving contact is mounted on the movable end. The moving contact of any one contact component corresponds to the stationary contact of the other contact component, and when the corresponding moving contact contacts the stationary contact, the two movable springs are connected in parallel. The movable end of each movable spring corresponds to the connecting end of the other movable spring, and the two movable ends are located on the same side of the two connecting ends along a first direction.

2. The relay according to claim 1, characterized in that, The orthographic projections of the two movable springs on a projection plane have an overlapping area, and the projection plane is perpendicular to the width direction of the movable spring.

3. The relay according to claim 2, characterized in that, The moving springs of the two contact components are arranged in a cross pattern, and the cross area is located between two sets of corresponding moving contacts and stationary contacts, with the cross portions spaced apart from each other along the width direction of the moving springs.

4. The relay according to claim 3, characterized in that, The movable spring also has a bent section, and the connecting end is connected to the movable end through the bent section, so that the movable contact and the stationary contact on the movable spring are staggered in the first direction; the two bent sections are arranged crosswise.

5. The relay according to claim 4, characterized in that, The movable spring has a notch on one side along its width direction at least at the location where the bent section is provided, at least a portion of the width direction of each movable spring is embedded in the notch of another movable spring, and the two bent sections are spaced apart from each other.

6. The relay according to claim 5, characterized in that, A portion of the notch in the movable spring is located at the connecting end of the movable spring, and another portion is located at the bent section of the movable spring.

7. The relay according to claim 5, characterized in that, The bending section has a first section and a second section, one end of the first section is connected to the movable end, one end of the second section is connected to the other end of the first section, and the other end of the second section is connected to the connecting end; Wherein, along the width direction of the movable spring, the size of the first segment is larger than the size of the second segment; and the side where the first segment and the second segment meet constitute at least a portion of the edge of the notch.

8. The relay according to claim 7, characterized in that, When the moving contact comes into contact with the stationary contact, the two current directions of the first segment are opposite along the first direction.

9. The relay according to claim 8, characterized in that, When the moving contact contacts the stationary contact, the two first segments are arranged parallel to the first plane, and the first plane is perpendicular to the arrangement direction of the two connecting ends.

10. The relay according to claim 4, characterized in that, The movable reed is composed of a single reed or is formed by stacking at least two reeds.

11. The relay according to claim 10, characterized in that, When the movable reed is formed by stacking at least two reeds, the at least two reeds are arranged at intervals from each other in the area where the bend is located.

12. The relay according to claim 1, characterized in that, Both the connecting end and the movable end are flat plates, and when the moving contact and the stationary contact are in contact, the plane of the connecting end of the moving spring is parallel or nearly parallel to the plane of the movable end.

13. The relay according to claim 12, characterized in that, The two connection ends are located on the same plane.

14. The relay according to claim 12, characterized in that, The connection ends of the two contact components are arranged in parallel.

15. The relay according to claim 1, characterized in that, The two moving springs are identical in size and structure.

16. The relay according to claim 1, characterized in that, When the two contact components are in the closed state, they are connected only through the corresponding moving contact and stationary contact.

17. The relay according to claim 1, characterized in that, The lead-out terminal is located on the side of the connecting end opposite to the corresponding movable end.

18. The relay according to claim 1, characterized in that, The lead-out terminal has a sheet-like structure, and the lead-out terminals of the two contact components are arranged on the same plane.

19. The relay according to claim 18, characterized in that, The relay further includes two conductive elements, one end of which is connected to the lead-out terminals of the two contact components respectively, and extends from their respective lead-out terminals along the first direction away from the corresponding moving contact.

20. The relay according to claim 1, characterized in that, The relay also includes: The driving part is connected to the two movable ends and is used to drive the movable ends to move relative to the corresponding connecting ends, so as to cause the moving contact on the movable end to contact or separate from the stationary contact on the corresponding connecting end.

21. The relay according to claim 20, characterized in that, The drive section is located on the side of the two movable ends facing away from the two connecting ends.

22. The relay according to claim 20, characterized in that, The driving component includes: The armature drive section is connected to the movable ends of the two contact components; The coil assembly is electromagnetically coupled to the armature drive portion and is configured to drive the armature drive portion to move linearly along the first direction in response to an input signal, thereby causing the movable end to move.

23. The relay according to claim 22, characterized in that, The armature drive section has two drive arms of equal length and symmetrically arranged, and the two drive arms are respectively connected to the two movable ends.

24. The relay according to claim 22, characterized in that, The axial direction of the coil assembly is perpendicular to the first direction.

25. The relay according to claim 22, characterized in that, The contact assembly further includes an elastic element disposed between the movable spring and the armature drive portion. The elastic element is configured to store energy and provide contact pressure to the movable spring when both contact assemblies are in a closed state. The movable end of the elastic element and / or the movable spring is provided with a limiting portion for limiting the range of motion of the armature drive portion along the extension direction of the connection end.

26. The relay according to claim 22, characterized in that, The relay also includes a housing, the driving part is disposed inside the housing, the coil assembly is provided with a yoke; the armature driving part is provided with a guide part, and the housing and / or the yoke is provided with a guide engagement part that guides and engages with the guide part along the linear movement direction of the armature driving part.

27. The relay according to claim 26, characterized in that, The armature drive portion contacts the housing and / or the yoke only at the mating position of the guide portion and the guide mating portion, while the remaining positions of the armature drive portion form a gap with the inner wall of the housing.

28. The relay according to claim 26, characterized in that, The armature driving part has the guide portion on at least one side of the two sides along the width direction of the moving spring. One of the guide portion and the guide mating part is a guide post and the other is a groove. The axial direction of the guide post is parallel to the width direction of the moving spring. The groove extends along the linear movement direction of the armature driving part. The end of the guide post is slidably disposed in the groove.

29. The relay according to claim 28, characterized in that, The end of the guide post is shaped into a spherical surface, and the groove has a groove wall that is adapted to the spherical surface.

30. The relay according to claim 1, characterized in that, The corresponding moving contact and the stationary contact are defined as a contact group, and the relay further includes a short-circuit protection structure, and at least one of the contact groups is provided with the short-circuit protection structure; The short-circuit protection structure includes a first magnetic conductor and a second magnetic conductor, which are configured to be magnetized and attract each other when the two contact components are energized, thereby applying pressure to the moving spring towards the corresponding stationary contact or keeping the moving spring in contact with the corresponding stationary contact.

31. The relay according to claim 30, characterized in that, The first magnetic conductor is fixedly disposed relative to the stationary contact, and the second magnetic conductor is fixedly connected to the moving spring.

32. The relay according to claim 30, characterized in that, When the corresponding moving contact and the stationary contact are in contact, the second magnetic conductor is configured to move toward the first magnetic conductor when the current value flowing through the contact assembly is greater than or equal to a threshold, so as to reduce the magnetic gap between it and the first magnetic conductor.

33. The relay according to claim 32, characterized in that, The relay further includes a driving section, which includes an armature driving section and a coil assembly. The armature driving section is connected to the movable ends of the two contact assemblies. The coil assembly is electromagnetically coupled to the armature driving section and is configured to drive the armature driving section to move linearly in response to an input signal, so as to cause the moving contact on the movable end to contact or separate from the stationary contact on the corresponding connection end. The first magnetic conductor is fixedly disposed relative to the stationary contact, and the second magnetic conductor is movably disposed on the armature driving part along the movement direction of the armature driving part. When the corresponding moving contact and the stationary contact are in a non-contact state, and when the corresponding moving contact and the stationary contact are in contact and the current value of the contact component is less than the threshold, the second magnetic conductor is held against the armature driving part along the disconnection direction of the moving contact based on elastic or magnetic force. When the corresponding moving contact and the stationary contact are in contact and the current value of the contact component is greater than or equal to the threshold, the second magnetic conductor overcomes the elastic or magnetic force and moves toward the first magnetic conductor to reduce the magnetic gap between them.

34. The relay according to claim 32, characterized in that, The relay further includes a driving section, which includes an armature driving section and a coil assembly. The armature driving section includes an armature assembly and a pusher. One end of the pusher is connected to the movable end of the moving spring, and the other end is connected to the armature assembly and forms a clearance fit along a first direction. The coil assembly is electromagnetically coupled to the armature section and is configured to drive the armature section to move linearly in response to an input signal, so as to drive the moving contact on the movable end to contact or separate from the corresponding stationary contact. The second magnetic conductor is fixed to the pusher.

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