Relay

Abstract

The present disclosure provides a relay, comprising a housing, a contact assembly, a fixed component, and an armature assembly, wherein the contact assembly is arranged in the housing and comprises two contact portions, one contact portion is provided with a first stationary contact, and the other contact portion is provided with a first movable contact; the fixed component is fixedly mounted in the housing, and the fixed component and the housing are of separate structures; a first arc extinguishing component is provided on the fixed component, and the first arc extinguishing component is located around the first stationary contact and the first movable contact, and is used for extinguishing an arc generated between the first movable contact and the first stationary contact; the armature assembly is arranged in the housing, is pivotably connected to the fixed component, and is used for driving the contact portion provided with the first movable contact to move, so that the first movable contact is in contact with or separated from the first stationary contact.

Description

relay

[0001] This disclosure claims priority to Chinese Patent Application No. 202411799869.7, filed on December 09, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of electrical control device technology, and more specifically, to a relay. Background Technology

[0003] 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.

[0004] A magnetic latching relay, as one type of relay, includes a housing and two contact parts disposed within the housing. The two contact parts have closed and open states. When the two contact parts switch between the closed and open states, an electric arc can easily be generated between the moving and stationary contacts.

[0005] In related technologies, to enhance the arc-extinguishing effect, a ceramic plate is typically placed near the moving and stationary contacts, and this ceramic plate is installed on the inner wall surface of the housing. However, due to the poor dimensional accuracy of the housing, the position of the ceramic plate installed in the housing is prone to deviation, which in turn affects the positional accuracy between the ceramic plate and the moving and stationary contacts, ultimately affecting the arc-extinguishing effect of the ceramic plate. Summary of the Invention

[0006] This disclosure provides a relay that solves the problem in related technologies where the low installation accuracy of the ceramic plate affects the arc extinguishing effect. The relay of this disclosure includes:

[0007] shell;

[0008] A contact assembly is disposed within the housing and includes two contact portions, one of which has a first stationary contact and the other of which has a first movable contact.

[0009] A fixing component is fixedly installed inside the housing and is a separate structure from the housing; the fixing component is provided with a first arc-extinguishing element, which is located around the first stationary contact and the first moving contact, and is used to extinguish the electric arc generated between the first moving contact and the first stationary contact; and

[0010] An armature assembly, disposed within the housing and oscillatingly connected to the fixing member, is used to drive the contact portion having the first moving contact to move, so that the first moving contact contacts or separates from the first stationary contact.

[0011] According to some embodiments of this disclosure, one of the contact portions of the contact assembly further includes a first movable spring and a second movable contact, both of which are mounted on the first movable spring. The other contact portion further includes a second movable spring and a second movable contact, both of which are mounted on the second movable spring. The first movable spring and the second movable spring are arranged side by side.

[0012] The armature assembly is configured to drive the first movable spring and the second movable spring to move respectively, so that the first movable contact and the second movable contact respectively contact or separate from the first stationary contact and the second stationary contact;

[0013] When the contact assembly is in the open state, the contact gap between the first moving contact and the first stationary contact is smaller than the contact gap between the second moving contact and the second stationary contact.

[0014] According to some embodiments of this disclosure, the armature assembly is oscillatingly connected to the fixing member via a swing shaft;

[0015] Along the axial direction of the swing shaft, the first arc-extinguishing element is located on one side of the first stationary contact and the first moving contact.

[0016] According to some embodiments of this disclosure, the fixing member and the first arc-extinguishing member are connected by integral injection molding.

[0017] According to some embodiments of this disclosure, the fastener has a mounting hole that extends through the fastener along its thickness direction, and the first arc-extinguishing member passes through the mounting hole.

[0018] According to some embodiments of this disclosure, the fastener has a recessed groove on the side facing away from the first moving contact and the first stationary contact, and the mounting hole penetrates the bottom surface of the recessed groove.

[0019] The first arc-extinguishing component includes a first substrate and a first protrusion. The first substrate is located in the sink and overlaps the bottom surface of the sink. The first protrusion is disposed on the side surface of the first substrate facing the first moving contact and the first stationary contact, passes through the mounting hole, and is inserted between the two contact portions.

[0020] According to some embodiments of this disclosure, the first protrusion has a first notch at one end away from the first substrate, and the shape of the first notch is adapted to the outer periphery shape of the first moving contact and the first stationary contact after they are closed, so that the first protrusion covers part of the outer periphery of the first moving contact and the first stationary contact.

[0021] According to some embodiments of this disclosure, the relay further includes a second arc-extinguishing element, which is installed on the inner wall surface of the housing and located around the first stationary contact and the first moving contact, for extinguishing the electric arc generated between the first moving contact and the first stationary contact.

[0022] According to some embodiments of this disclosure, the armature assembly is oscillatingly connected to the fixing member via a swing shaft;

[0023] Along the axial direction of the swing shaft, the first arc-extinguishing element and the second arc-extinguishing element are located on both sides of the first stationary contact and the first moving contact, respectively.

[0024] According to some embodiments of this disclosure, the first arc-extinguishing component has a first notch adapted to the outer peripheral shape of the first moving contact and the first stationary contact after they are closed, and the second arc-extinguishing component has a second notch adapted to the outer peripheral shape of the first moving contact and the first stationary contact after they are closed. The first notch and the second notch are arranged opposite to each other along the axial direction of the swing axis, and the first moving contact and the first stationary contact are located within the annular frame formed by the first notch and the second notch after they are closed.

[0025] According to some embodiments of this disclosure, the first arc-extinguishing element and / or the second arc-extinguishing element are made of ceramic material.

[0026] According to some embodiments of this disclosure, the fastener includes:

[0027] A fixing part, fixedly connected to the housing and located on the side of the other contact part opposite to one of the contact parts, wherein the armature assembly is pivotally connected to the fixing part; and

[0028] An extension is connected to the fixed part and located around the first moving contact and the first stationary contact, and the first arc-extinguishing element is mounted on the extension.

[0029] According to some embodiments of this disclosure, one of the fastener and the housing has a plug-in portion and the other has a slot, the plug-in portion being detachably plugged into the slot.

[0030] One embodiment disclosed above has at least the following advantages or beneficial effects:

[0031] In the relay of this embodiment, the first arc-extinguishing element is mounted on the fixing element instead of the housing. Since the fixing element serves to install the armature assembly and is a separate structure from the housing, the dimensional accuracy of the fixing element can be designed to be high. As a result, after the first arc-extinguishing element is mounted on the fixing element, the positional accuracy between the first arc-extinguishing element and the first moving contact and the first stationary contact is also guaranteed, thereby improving the arc-extinguishing effect of the first arc-extinguishing element.

[0032] Furthermore, the first arc-extinguishing element is made of ceramic material. On the one hand, ceramic material has a better cooling effect, which enables the first arc-extinguishing element to effectively cool the arc generated between the first moving contact and the first stationary contact, further improving the arc-extinguishing effect; on the other hand, ceramic material has a good heat insulation effect, which can prevent the heat of the arc generated between the first moving contact and the first stationary contact from being conducted to the outer casing; furthermore, the first arc-extinguishing element can also play an arc-blocking role, preventing the arc from burning the outer casing.

[0033] Furthermore, the fixing component and the first arc-extinguishing component are connected by an integral injection molding process, which eliminates the need for baking during the connection process and significantly improves the production efficiency of the product.

[0034] Furthermore, the first protrusion protrudes from the surface of the first substrate facing the first moving contact and the first stationary contact, and the distance between the first protrusion and the first moving contact and the first stationary contact is closer, which enhances the cooling effect of the first arc extinguishing element.

[0035] Furthermore, the outer periphery of the first moving contact and the first stationary contact is basically completely surrounded by the first arc-extinguishing element and the second arc-extinguishing element. When an electric arc is generated between the first moving contact and the first stationary contact, the first arc-extinguishing element and the second arc-extinguishing element can extinguish the arc in time and prevent the arc from escaping from the annular frame formed by the first arc-extinguishing element and the second arc-extinguishing element to a certain extent and burning the outer shell. Attached Figure Description

[0036] Figure 1 shows a perspective view of a relay according to an embodiment of the present disclosure.

[0037] Figure 2 shows an exploded view of a relay according to an embodiment of the present disclosure.

[0038] Figure 3 shows a schematic diagram of a relay according to an embodiment of the present disclosure with the first housing omitted.

[0039] Figure 4 shows a schematic diagram of Figure 3 with the fixing component and the first arc-extinguishing component omitted.

[0040] Figure 5 shows a three-dimensional schematic diagram of the assembly of the fixing component and the first arc-extinguishing component.

[0041] Figure 6 shows a three-dimensional schematic diagram of the fastener.

[0042] Figure 7 shows a three-dimensional schematic diagram of the first arc-extinguishing component.

[0043] Figure 8 shows a schematic diagram of the positional relationship between the first notch of the first protrusion, the second notch of the second protrusion, and the arc-resistant end contact group.

[0044] The reference numerals in the attached drawings are explained as follows: 100, outer casing; 110, first housing; 120, second housing; 121, slot; 200, contact assembly; 200a, arc-resistant end contact group; 200b, current-carrying end contact group; 210, first contact portion; 211, first moving spring; 212, first stationary contact; 213, second moving contact; 220, second contact portion; 221, second moving spring; 222, first moving contact; 223, second stationary contact; 300, armature assembly; 31 0. Fixing component; 311. Mounting hole; 312. Recessed groove; 313. Fixing part; 314. Extension part; 315. Insertion part; 320. First arc extinguishing component; 321. First substrate; 322. First protrusion; 323. First notch; 331. Swing shaft; 400. Second arc extinguishing component; 410. Second substrate; 420. Second protrusion; 421. Second notch; 500. Coil assembly; 601. First lead-out piece; 602. Second lead-out piece. Detailed Implementation

[0045] 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 disclosure 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.

[0046] It is understood that the terms "comprising" and "having," and any variations thereof, used in the embodiments of this disclosure, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus 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 such processes, methods, products, or apparatus.

[0047] This disclosure provides a relay, which can be a magnetic latching relay, but is not limited thereto. As shown in Figures 1 and 2, the relay includes a housing 100, a contact assembly 200, an armature assembly 300, and a coil assembly 500. The contact assembly 200 is disposed within the housing 100 and has a closed state and an open state. The armature assembly 300 is disposed within the housing 100 and is used to drive the contact assembly 200 to switch from the closed state to the open state and from the open state to the closed state. The coil assembly 500 is disposed within the housing 100 and is electromagnetically coupled to the armature assembly 300.

[0048] In one embodiment, as shown in FIG2, 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 assembly 200, the armature assembly 300, and the coil assembly 500. The shape of the first casing 110 and the second casing 120 after connection can have various embodiments. For example, in the embodiments of this disclosure, 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.

[0049] As an example, the second housing 120 is a cuboid shape with an opening, and the contact assembly 200, armature assembly 300, and coil assembly 500 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.

[0050] 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 assembly 200, the armature assembly 300 and the coil assembly 500.

[0051] As shown in Figures 2 and 4, the contact assembly 200 includes two contact portions arranged side-by-side along the thickness direction of the contact portions. For ease of explanation, the two contact portions are defined as the first contact portion 210 and the second contact portion 220, respectively.

[0052] The first contact portion 210 includes a first movable spring 211, a first stationary contact 212, and a second movable contact 213, which are respectively mounted at both ends of the first movable spring 211 along its length. As an example, the first stationary contact 212 and the second movable contact 213 can be mounted on the first movable spring 211 by riveting, but this is not a limitation.

[0053] The second contact portion 220 includes a second movable spring 221, a first movable contact 222, and a second stationary contact 223, which are respectively mounted at both ends of the second movable spring 221 along its length. As an example, the first movable contact 222 and the second stationary contact 223 can be mounted on the second movable spring 221 by riveting, but this is not a limitation.

[0054] As shown in Figure 4, the first movable spring 211 and the second movable spring 221 are arranged side by side along the thickness direction of the movable springs and are approximately parallel to each other. Along the side-by-side arrangement direction of the first movable spring 211 and the second movable spring 221, the position of the first movable contact 222 corresponds to that of the first stationary contact 212, and the first movable contact 222 is used to contact or separate from the first stationary contact 212; the position of the second movable contact 213 corresponds to that of the second stationary contact 223, and the second movable contact 213 is used to contact or separate from the second stationary contact 223.

[0055] When the contact assembly 200 is in the closed state, the first moving contact 222 is in contact with the first stationary contact 212, and the second moving contact 213 is in contact with the second stationary contact 223, so that the first moving spring 211 and the second moving spring 221 form a parallel circuit structure. When the contact assembly 200 is in the open state, the first moving contact 222 is separated from the first stationary contact 212, and the second moving contact 213 is separated from the second stationary contact 223.

[0056] As shown in Figures 2 and 4, the first contact portion 210 further includes a first lead-out piece 601, and the second contact portion 220 further includes a second lead-out piece 602. The first lead-out piece 601 and the second lead-out piece 602 are used for electrical connection with the positive and negative terminals of the load, respectively. Part of the first lead-out piece 601 extends out of the outer surface of the housing 100, and part of the second lead-out piece 602 extends out of the outer surface of the housing 100.

[0057] In one embodiment, the first lead-out piece 601 is riveted to the first moving spring piece 211 and the first stationary contact 212, and the second lead-out piece 602 is riveted to the second moving spring piece 221 and the second stationary contact 223.

[0058] Of course, in other embodiments, the first contact portion 210 and the second contact portion 220 are not limited to a parallel circuit structure when closed. For example, in another embodiment, the first contact portion 210 includes a first lead-out piece 601 and a first stationary contact 212, with the first stationary contact 212 disposed on the first lead-out piece 601. The second contact portion 220 includes a second moving spring 221 and a first moving contact 222, with the first moving contact 222 disposed on the second moving spring 221. The armature assembly 300 is used to drive the second moving spring 221 to move, so that the first moving contact 222 contacts or separates from the first stationary contact 212.

[0059] As shown in Figures 2, 3, and 5, the relay also includes a fixing member 310, which is fixedly installed inside the housing 100. The fixing member 310 and the housing 100 are separate structures. The fixing member 310 is provided with a first arc-extinguishing member 320, which is located around the first stationary contact 212 and the first moving contact 222, and is used to extinguish the arc generated between the first moving contact 222 and the first stationary contact 212.

[0060] The armature assembly 300 is located on the side of the second contact portion 220 facing away from the first contact portion 210. The armature assembly 300 is pivotally connected to the fixing member 310 and is used to drive the first moving spring 211 and the second moving spring 221 to move, respectively, so that the first moving contact 222 and the second moving contact 213 respectively contact or separate from the first stationary contact 212 and the second stationary contact 223. The coil assembly 500 is configured to drive the armature assembly 300 to pivot relative to the fixing member 310 in response to an input signal.

[0061] In the relay of this embodiment, the first arc-extinguishing element 320 is mounted on the fixing element 310 instead of the housing 100. Since the fixing element 310 serves to mount the armature assembly 300 and is a separate structure from the housing 100, the dimensional accuracy of the fixing element 310 can be designed to be high. As a result, after the first arc-extinguishing element 320 is mounted on the fixing element 310, the positional accuracy between the first arc-extinguishing element 320 and the first moving contact 222 and the first stationary contact 212 is also guaranteed, thereby improving the arc-extinguishing effect of the first arc-extinguishing element 320. Furthermore, compared to the prior art where the first arc-extinguishing element 320 is fixedly mounted on the housing 100, causing the position of the lead-out piece to interfere with and restrict the assembly of the first housing 110 and the second housing 120, the relay of this disclosure, by mounting the first arc-extinguishing element 320 on the fixing member 310, that is, mounting the first arc-extinguishing element 320 inside the housing 100, can avoid the assembly of the first housing 110 and the second housing 120 being affected by the change in the position of the lead-out piece.

[0062] As shown in Figures 1 and 2, the armature assembly 300 is oscillatingly connected to the fixed member 310 via the swing shaft 331 (Figure 1). Along the axial direction of the swing shaft 331, the first arc-extinguishing member 320 is located on one side of the first stationary contact 212 and the first moving contact 222.

[0063] In one embodiment, when the contact assembly 200 is in the off state, the contact gap between the first moving contact 222 and the first stationary contact 212 is smaller than the contact gap between the second moving contact 213 and the second stationary contact 223.

[0064] For ease of explanation, the first moving contact 222 and the first stationary contact 212 with a smaller contact gap are defined as the arc-resistant end contact group 200a, and the second moving contact 213 and the second stationary contact 223 with a larger contact gap are defined as the current-carrying end contact group 200b.

[0065] Because the contact gap of the arc-resistant contact group 200a is smaller than that of the current-carrying contact group 200b when the contact component 200 is in the open state, the current-carrying contact group 200b will disconnect before the arc-resistant contact group 200a during the switching process from the closed to the open state of the contact component 200. Furthermore, the arc-resistant contact group 200a is not completely disconnected until the current-carrying contact group 200b has just disconnected. Therefore, the current-carrying contact group 200b functions as a current carrier, while the arc-resistant contact group 200a functions as an arc suppressor. In other words, the arc-resistant contact group 200a will generate an electric arc, while the current-carrying contact group 200b will not.

[0066] In this embodiment of the present disclosure, the first arc-extinguishing element 320 is provided only around the first moving contact 222 and the first stationary contact 212 (i.e., the arc-resistant end contact group 200a) that can generate an electric arc, while the first arc-extinguishing element 320 is not provided around the second moving contact 213 and the second stationary contact 223 (i.e., the current-carrying end contact group 200b) that do not generate an electric arc. This is done in a targeted manner, rather than providing the first arc-extinguishing element 320 around both the arc-resistant end contact group 200a and the current-carrying end contact group 200b, thus saving material costs.

[0067] It is understandable that the different contact gaps between the arc-resistant end contact group 200a and the current-carrying end contact group 200b can be achieved by reducing the contact height, but this is not a limitation.

[0068] In one embodiment, the first arc-extinguishing element 320 is made of ceramic material. On the one hand, ceramic material has a better cooling effect, which enables the first arc-extinguishing element 320 to effectively cool the arc generated between the first moving contact 222 and the first stationary contact 212, further improving the arc-extinguishing effect. On the other hand, ceramic material has a good heat insulation effect, which can prevent the heat of the arc generated between the first moving contact 222 and the first stationary contact 212 from being conducted to the outer casing 100. Furthermore, the first arc-extinguishing element 320 can also act as an arc blocker, preventing the arc from burning the outer casing 100.

[0069] Of course, in other embodiments, the first arc-extinguishing element 320 may also be made of other materials with cooling and / or heat insulation effects, which will not be listed here.

[0070] In one embodiment, the fixing member 310 is made of plastic, and the fixing member 310 is connected to the first arc-extinguishing member 320 by integral injection molding.

[0071] It should be noted that in related technologies, the first arc-extinguishing component 320 is usually installed on the inner wall of the first housing 110 by dispensing adhesive. Since dispensing adhesive is used, a baking process in an oven is required afterward, which results in a long product production cycle.

[0072] In this embodiment of the present disclosure, the fixing member 310 and the first arc-extinguishing member 320 are connected by an integral injection molding method. The connection process between the fixing member 310 and the first arc-extinguishing member 320 does not require baking, which significantly improves the production efficiency of the product.

[0073] Of course, in other embodiments, the fixing member 310 and the first arc-extinguishing member 320 can also be connected by snap-fitting, riveting, welding or other methods, which will not be listed here.

[0074] As shown in Figures 5 and 6, the fixing member 310 includes a fixing part 313 and an extension part 314. The fixing part 313 is fixedly connected to the second housing 120 and is located on the side of the second contact part 220 opposite to the first contact part 210. The armature assembly 300 is pivotally connected to the fixing part 313. The extension part 314 is connected to the fixing part 313 and is located around the first moving contact 222 and the first stationary contact 212. The first arc-extinguishing member 320 is mounted on the extension part 314.

[0075] The extension 314 has a mounting hole 311, which extends through the extension 314 along the thickness direction of the fastener 310, and the first arc-extinguishing member 320 passes through the mounting hole 311.

[0076] The extension 314 of the fixing member 310 has a groove 312 on the side facing away from the first moving contact 222 and the first stationary contact 212, and the mounting hole 311 penetrates the bottom surface of the groove 312. The first arc extinguishing member 320 includes a first base plate 321 and a first protrusion 322. The first base plate 321 is located in the groove 312 and overlaps the bottom surface of the groove 312. The first protrusion 322 is provided on the surface of the first base plate 321 facing the first moving contact 222 and the first stationary contact 212, and passes through the mounting hole 311 and is inserted between the first moving spring 211 and the second moving spring 221.

[0077] In this embodiment of the present disclosure, the first protrusion 322 protrudes from the surface of the first substrate 321 facing the first moving contact 222 and the first stationary contact 212. The distance between the first protrusion 322 and the first moving contact 222 and the first stationary contact 212 is closer, which enhances the cooling effect of the first arc extinguishing member 320.

[0078] It should also be noted that the extension 314 is provided with a recess 312, and the first base plate 321 of the first arc extinguishing member 320 overlaps the bottom surface of the recess 312. This allows the first arc extinguishing member 320 to be installed by first connecting the fixing member 310 to the second housing 120, and then directly overlapping the first arc extinguishing member 320 with the bottom surface of the recess 312 and connecting the first housing 110 to the second housing 120 without any other auxiliary connection process. This not only achieves the limiting and anti-detachment of the first arc extinguishing member 320, but also simplifies the installation process.

[0079] As shown in Figures 5 and 7, the first protrusion 322 has a first notch 323 at one end away from the first substrate 321. The shape of the first notch 323 is adapted to the outer periphery shape of the first moving contact 222 and the first stationary contact 212 after they are closed, so that the first protrusion 322 covers part of the outer periphery of the first moving contact 222 and the first stationary contact 212.

[0080] In this embodiment of the present disclosure, the shape of the first notch 323 is adapted to the outer periphery shape of the first moving contact 222 and the first stationary contact 212 after they are closed, so that the first protrusion 322 can cover part of the outer periphery of the first moving contact 222 and the first stationary contact 212. Thus, the area covered by the first protrusion 322 of the first moving contact 222 and the first stationary contact 212 is larger, which further enhances the cooling effect of the first arc extinguishing member 320.

[0081] In one embodiment, the shape of the first notch 323 may be semi-circular, but is not limited thereto.

[0082] Referring back to Figure 2, the relay also includes a second arc-extinguishing element 400. The second arc-extinguishing element 400 is mounted on the inner wall surface of the housing 100 and located around the first stationary contact 212 and the first moving contact 222, for extinguishing the arc generated between the first moving contact 222 and the first stationary contact 212. In this embodiment, the second arc-extinguishing element 400 is mounted on the inner wall surface of the second housing 120.

[0083] In one embodiment, the second arc-extinguishing element 400 is made of ceramic material. On the one hand, ceramic material has a better cooling effect, which enables the second arc-extinguishing element 400 to effectively cool the arc generated between the first moving contact 222 and the first stationary contact 212, further improving the arc-extinguishing effect. On the other hand, ceramic material has a good heat insulation effect, which can prevent the heat of the arc generated between the first moving contact 222 and the first stationary contact 212 from being conducted to the outer casing 100. Furthermore, the second arc-extinguishing element 400 can also act as an arc blocker, preventing the arc from burning the outer casing 100.

[0084] Of course, in other embodiments, the second arc-extinguishing element 400 may also be made of other materials with cooling and / or heat insulation effects, which will not be listed here.

[0085] In one embodiment, along the axial direction of the swing shaft 331, the first arc-extinguishing element 320 and the second arc-extinguishing element 400 are located on both sides of the first stationary contact 212 and the first moving contact 222, respectively.

[0086] In this embodiment of the present disclosure, the arc-resistant end contact group 200a is provided with a first arc-extinguishing element 320 and a second arc-extinguishing element 400 on both sides of the axial direction of the swing shaft 331. The first arc-extinguishing element 320 and the second arc-extinguishing element 400 can simultaneously extinguish the arc generated between the first moving contact 222 and the first stationary contact 212, resulting in a better arc-extinguishing effect.

[0087] In one embodiment, as shown in FIG2, the second arc extinguishing member 400 may include a second substrate 410 and a second protrusion 420. The second substrate 410 is connected to the inner wall surface of the second housing 120, and the second protrusion 420 protrudes from the side surface of the second substrate 410 facing the first moving contact 222 and the first stationary contact 212, and is inserted between the first moving spring 211 and the second moving spring 221.

[0088] As shown in Figures 2 and 8, the second protrusion 420 of the second arc-extinguishing component 400 has a second notch 421 that matches the outer peripheral shape of the first moving contact 222 and the first stationary contact 212 after they are closed. The first notch 323 and the second notch 421 are arranged opposite each other along the axial direction of the swing shaft 331. After the first moving contact 222 and the first stationary contact 212 are closed (i.e., the arc-resistant end contact group 200a), they are located within the annular frame formed by the first notch 323 and the second notch 421.

[0089] In this embodiment of the present disclosure, the outer periphery of the arc-resistant end contact group 200a is basically completely surrounded by the first arc-extinguishing element 320 and the second arc-extinguishing element 400. When the arc-resistant end contact group 200a generates an electric arc, the first arc-extinguishing element 320 and the second arc-extinguishing element 400 can extinguish the arc in a timely manner, and to a certain extent can prevent the arc from escaping from the annular frame formed by the first arc-extinguishing element 320 and the second arc-extinguishing element 400 and burning the outer shell 100.

[0090] In one embodiment, the shape of the second notch 421 may be semi-circular, but is not limited thereto.

[0091] As shown in Figures 4 and 6, in one embodiment, the fastener 310 is connected to the housing 100 by a plug-in connection. For example, the fastener 310 has a plug-in portion 315 in its fixing part 313, and the second housing 120 of the housing 100 has a slot 121 in which the plug-in portion 315 is detachably plugged into the slot 121.

[0092] In another embodiment, the fixing part 313 has a slot 121, and the second housing 120 has a plug-in part 315.

[0093] In addition, in other embodiments, the fastener 310 and the housing 100 can also be connected by riveting, screws, adhesive bonding, welding, interference fit, etc.

[0094] In summary, the relays of the present disclosure embodiments have at least the following advantages and beneficial effects:

[0095] In the relay of this embodiment, the first arc-extinguishing element 320 is mounted on the fixing element 310 instead of the housing 100. Since the fixing element 310 serves to mount the armature assembly 300 and is a separate structure from the housing 100, the dimensional accuracy of the fixing element 310 can be designed to be high. As a result, after the first arc-extinguishing element 320 is mounted on the fixing element 310, the positional accuracy between the first arc-extinguishing element 320 and the first moving contact 222 and the first stationary contact 212 is also guaranteed, thereby improving the arc-extinguishing effect of the first arc-extinguishing element 320. Furthermore, compared to the prior art where the first arc-extinguishing element 320 is fixedly mounted on the housing 100, causing the position of the lead-out piece to interfere with and restrict the assembly of the first housing 110 and the second housing 120, the relay of this disclosure, by mounting the first arc-extinguishing element 320 on the fixing member 310, that is, mounting the first arc-extinguishing element 320 inside the housing 100, can avoid the assembly of the first housing 110 and the second housing 120 being affected by the change in the position of the lead-out piece.

[0096] Furthermore, the first arc-extinguishing element 320 is made of ceramic material. On the one hand, ceramic material has a better cooling effect, which enables the first arc-extinguishing element 320 to effectively cool the arc generated between the first moving contact 222 and the first stationary contact 212, further improving the arc-extinguishing effect; on the other hand, ceramic material has a good heat insulation effect, which can prevent the heat of the arc generated between the first moving contact 222 and the first stationary contact 212 from being conducted to the outer casing 100; furthermore, the first arc-extinguishing element can also play an arc-blocking role, preventing the arc from burning the outer casing 100.

[0097] Furthermore, the fixing component 310 and the first arc-extinguishing component 320 are connected by an integral injection molding process. The connection process between the fixing component 310 and the first arc-extinguishing component 320 does not require baking, which significantly improves the production efficiency of the product.

[0098] Furthermore, the first protrusion 322 protrudes from the surface of the first substrate 321 on the side facing the first moving contact 222 and the first stationary contact 212. The distance between the first protrusion 322 and the first moving contact 222 and the first stationary contact 212 is closer, which enhances the cooling effect of the first arc extinguishing member 320.

[0099] Furthermore, the outer periphery of the first moving contact 222 and the first stationary contact 212 is basically completely surrounded by the first arc-extinguishing element 320 and the second arc-extinguishing element 400. When an electric arc is generated between the first moving contact 222 and the first stationary contact 212, the first arc-extinguishing element 320 and the second arc-extinguishing element 400 can extinguish the arc in time and, to a certain extent, prevent the arc from escaping from the annular frame formed by the first arc-extinguishing element 320 and the second arc-extinguishing element 400 and burning the outer casing 100.

[0100] It is understood that the various embodiments / implementations provided in this disclosure can be combined with each other without creating contradictions, and will not be described in detail here.

[0101] In the disclosed embodiments, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the disclosed embodiments according to the specific circumstances.

[0102] In the description of the disclosed embodiments, 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 disclosed embodiments 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 disclosed embodiments.

[0103] 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 disclosed embodiments. 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.

[0104] The above are merely preferred embodiments of the disclosed embodiments and are not intended to limit the disclosed embodiments. For those skilled in the art, the disclosed embodiments can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the disclosed embodiments should be included within the protection scope of the disclosed embodiments.

Claims

1. A relay, characterized in that, include: shell; A contact assembly is disposed within the housing and includes two contact portions, one of which has a first stationary contact and the other of which has a first movable contact. A fixing component is fixedly installed inside the housing and is a separate structure from the housing; the fixing component is provided with a first arc extinguishing component, which is located around the first stationary contact and the first moving contact, and is used to extinguish the electric arc generated between the first moving contact and the first stationary contact. as well as An armature assembly, disposed within the housing and oscillatingly connected to the fixing member, is used to drive the contact portion having the first moving contact to move, so that the first moving contact contacts or separates from the first stationary contact.

2. The relay according to claim 1, characterized in that, One of the contact portions of the contact assembly further includes a first movable spring and a second movable contact, both of which are mounted on the first movable spring. The other contact portion further includes a second movable spring and a second movable contact, both of which are mounted on the second movable spring. The first movable spring and the second movable spring are arranged side by side. The armature assembly is configured to drive the first movable spring and the second movable spring to move respectively, so that the first movable contact and the second movable contact respectively contact or separate from the first stationary contact and the second stationary contact; When the contact assembly is in the open state, the contact gap between the first moving contact and the first stationary contact is smaller than the contact gap between the second moving contact and the second stationary contact.

3. The relay according to claim 1, characterized in that, The armature assembly is oscillatingly connected to the fixing member via a swing shaft; Along the axial direction of the swing shaft, the first arc-extinguishing element is located on one side of the first stationary contact and the first moving contact.

4. The relay according to any one of claims 1-3, characterized in that, The fixing component is connected to the first arc-extinguishing component by integral injection molding.

5. The relay according to any one of claims 1-3, characterized in that, The fastener has a mounting hole that extends through the fastener along its thickness direction, and the first arc-extinguishing component passes through the mounting hole.

6. The relay according to claim 5, characterized in that, The fastener has a recessed groove on the side facing away from the first moving contact and the first stationary contact, and the mounting hole penetrates the bottom surface of the recessed groove. The first arc-extinguishing component includes a first substrate and a first protrusion. The first substrate is located in the sink and overlaps the bottom surface of the sink. The first protrusion is disposed on the side surface of the first substrate facing the first moving contact and the first stationary contact, passes through the mounting hole, and is inserted between the two contact portions.

7. The relay according to claim 6, characterized in that, The first protrusion has a first notch at one end away from the first substrate. The shape of the first notch is adapted to the outer periphery shape of the first moving contact and the first stationary contact after they are closed, so that the first protrusion covers part of the outer periphery of the first moving contact and the first stationary contact.

8. The relay according to claim 1, characterized in that, The relay further includes a second arc-extinguishing element, which is installed on the inner wall surface of the housing and located around the first stationary contact and the first moving contact, for extinguishing the electric arc generated between the first moving contact and the first stationary contact.

9. The relay according to claim 8, characterized in that, The armature assembly is oscillatingly connected to the fixing member via a swing shaft; Along the axial direction of the swing shaft, the first arc-extinguishing element and the second arc-extinguishing element are located on both sides of the first stationary contact and the first moving contact, respectively.

10. The relay according to claim 9, characterized in that, The first arc-extinguishing component has a first notch that matches the outer peripheral shape of the first moving contact and the first stationary contact after they are closed. The second arc-extinguishing component has a second notch that matches the outer peripheral shape of the first moving contact and the first stationary contact after they are closed. The first notch and the second notch are arranged opposite each other along the axial direction of the swing axis. After the first moving contact and the first stationary contact are closed, they are located within the annular frame formed by the first notch and the second notch.

11. The relay according to claim 8, characterized in that, The first arc-extinguishing element and / or the second arc-extinguishing element are made of ceramic material.

12. The relay according to any one of claims 1-3, characterized in that, The fastener includes: A fixing part, fixedly connected to the housing and located on the side of the other contact part opposite to one of the contact parts, wherein the armature assembly is pivotally connected to the fixing part; and An extension is connected to the fixed part and located around the first moving contact and the first stationary contact, and the first arc-extinguishing element is mounted on the extension.

13. The relay according to any one of claims 1-3, characterized in that, One of the fastener and the housing has a plug-in portion and the other has a slot, the plug-in portion being detachably plugged into the slot.

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