Relay

Abstract

The invention discloses a relay which comprises a contact assembly and an arc extinguishing assembly. The contact assembly comprises two contact parts, one contact part is provided with a first static contact and a first leading-out piece, the first static contact is arranged on the first leading-out piece, and the other contact part is provided with a first movable contact used for making contact with or being separated from the first static contact. The arc extinguishing assembly comprises a magnetic conductive piece and a permanent magnet, the magnetic conductive piece is connected with the first leading-out piece, and the permanent magnet is arranged on the side, facing the first movable contact and the first static contact, of the magnetic conductive piece, located around the first movable contact and the first static contact and used for extinguishing electric arcs generated between the first movable contact and the first static contact.

Description

Technical Field

[0001] The present application relates to the technical field of electric control devices, and in particular to a relay. Background Art

[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). It is usually used in automatic control circuits. A relay is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] As the application scope of relays continues to expand, relays are also developing towards high load and miniaturization. However, the temperature rise problem of relays in related technologies has not been well solved. Excessive temperature rise can easily lead to accelerated aging of plastic and insulating materials inside the relay, oxidation corrosion of contacts and difficulty in arc extinguishing, which in turn leads to problems such as decay of technical parameters of electrical components and reduced reliability. Summary of the invention

[0004] The embodiment of the present application provides a relay to solve the problem of excessive temperature rise existing in the related art.

[0005] The relay of the embodiment of the present application includes:

[0006] A contact assembly, comprising two contact parts, wherein one of the contact parts has a first stationary contact and a first lead-out piece, the first stationary contact is mounted on the first lead-out piece, and the other contact part has a first movable contact for contacting or separating with the first stationary contact; and

[0007] An arc extinguishing assembly includes a magnetic conductive member and a permanent magnet, wherein the magnetic conductive member is connected to the first lead-out piece, and the permanent magnet is installed on the side of the magnetic conductive member facing the first moving contact and the first static contact, and is located around the first moving contact and the first static contact, and is used to extinguish the arc generated between the first moving contact and the first static contact.

[0008] According to some embodiments of the present application, the first static contact connects the first lead-out piece and the magnetic conductive member by riveting.

[0009] According to some embodiments of the present application, the two contact parts are respectively a first contact part and a second contact part, the first contact part includes a first movable reed, the first static contact and a second movable contact, the second contact part includes a second movable reed, the first movable contact and a second static contact, the second movable contact is used to contact or separate with the second static contact; the first movable reed and the second movable reed are arranged side by side;

[0010] Wherein, the first static contact connects the first lead-out piece, the magnetic conductive member and the first movable spring piece by riveting.

[0011] According to some embodiments of the present application, the magnetic conductive component has a first through hole, the first movable spring sheet has a second through hole, the first lead-out sheet has a third through hole, the first static contact is penetrated through the first through hole, the second through hole and the third through hole, and the first movable spring sheet, the magnetic conductive component and the first lead-out sheet are riveted together.

[0012] According to some embodiments of the present application, the first lead-out piece is located on a side of the first movable reed piece facing away from the second movable reed piece.

[0013] According to some embodiments of the present application, the magnetic conductive member includes a first magnetic conductive portion and a second magnetic conductive portion, the first magnetic conductive portion is located on a side of the first movable reed sheet facing away from the second movable reed sheet, and the second magnetic conductive portion is connected to the first magnetic conductive portion and is located around the first movable contact and the first static contact;

[0014] The permanent magnet is mounted on a surface of the second magnetic conductive portion facing the first static contact.

[0015] According to some embodiments of the present application, the first magnetic conductive portion has a gap;

[0016] The first lead-out piece includes a first lead-out portion and a second lead-out portion, the first lead-out portion is located between the first movable spring piece and the first magnetic conductive portion, the second lead-out portion is connected to the first lead-out portion, and extends through the notch to a side surface of the first magnetic conductive portion facing away from the first lead-out portion.

[0017] According to some embodiments of the present application, the first lead-out piece also includes a third lead-out portion, which is connected to an end of the second lead-out portion away from the first lead-out portion; the third lead-out portion is perpendicular to the second lead-out portion, and the second lead-out portion is perpendicular to the first lead-out portion, and the third lead-out portion and the first lead-out portion are respectively located on both sides of the second lead-out portion in the thickness direction.

[0018] According to some embodiments of the present application, the two contact parts are respectively a first contact part and a second contact part, the first contact part includes a first movable reed, the first static contact and a second movable contact, the second contact part includes a second movable reed, the first movable contact and a second static contact, and the second movable contact is used to contact or separate with the second static contact;

[0019] Wherein, when the contact assembly is in a disconnected state, a contact gap between the first moving contact and the first stationary contact is smaller than a contact gap between the second moving contact and the second stationary contact.

[0020] According to some embodiments of the present application, the relay further comprises a housing, the contact assembly and the arc extinguishing assembly are arranged in the housing, a portion of the first lead-out piece extends out of an outer surface of the housing, and a second positioning portion is provided on an inner wall surface of the housing;

[0021] The magnetic conductive member has a first positioning portion, and the first positioning portion is positioned and matched with the second positioning portion.

[0022] According to some embodiments of the present application, the second positioning portion is a groove, and the first positioning portion is positioned in the groove.

[0023] According to some embodiments of the present application, the magnetic conductive member is a sheet-like structure, and the thickness of the magnetic conductive member is smaller than the thickness of the first lead-out sheet.

[0024] One embodiment of the above application has at least the following advantages or beneficial effects:

[0025] The relay of the embodiment of the present application includes an arc extinguishing assembly for extinguishing the arc between the first moving contact and the first static contact, the arc extinguishing assembly includes a magnetic conductive member and a permanent magnet, the magnetic conductive member is connected to the first lead-out piece, and the permanent magnet is installed on the magnetic conductive member. On the one hand, the magnetic conductive member can prevent the magnetic field generated by the permanent magnet from spreading outward and affecting the arc extinguishing effect, thereby enhancing the arc blowing magnetic field intensity at the center of the arc. On the other hand, the magnetic conductive member is connected to the first lead-out piece, which increases the heat dissipation area of ​​the contact assembly, thereby playing a role in reducing the temperature rise.

[0026] Furthermore, the first static contact is inserted into the first through hole, the second through hole and the third through hole, and the first movable spring piece, the magnetic conductive member and the first lead-out piece are riveted together. The first movable spring piece, the magnetic conductive member and the first lead-out piece are riveted together by the first static contact, so that the assembly efficiency of the first movable spring piece, the first lead-out piece and the magnetic conductive member can be improved.

[0027] Furthermore, the magnetic conductive part not only plays the role of magnetic conduction and heat dissipation, but also plays a positioning role. One magnetic conductive part has at least three functions, which reduces the number of parts required for the relay, thereby simplifying the design and manufacturing process and helping to improve production efficiency. In addition, using one part instead of multiple parts can significantly improve space utilization, thereby reducing the product volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Shown is a three-dimensional schematic diagram of a relay according to an embodiment of the present application.

[0029] Figure 2 Shown is a schematic diagram of an exploded view of a relay according to an embodiment of the present application.

[0030] Figure 3 The shown is omitted Figure 1 A schematic top view of a first shell and a fixing member.

[0031] Figure 4 Shown is a top view schematic diagram of the first contact portion and the arc extinguishing assembly installed in the second housing.

[0032] Figure 5 Shown is a three-dimensional schematic diagram of the arc extinguishing assembly and the first contact part after being assembled at one viewing angle.

[0033] Figure 6 Shown is a three-dimensional schematic diagram of the arc extinguishing assembly and the first contact part after being assembled from another viewing angle.

[0034] Figure 7 Shown is a three-dimensional schematic diagram of a magnetic conductive member.

[0035] The reference numerals are described as follows:

[0036] 100, housing; 110, first housing; 120, second housing; 121, second positioning portion;

[0037] 200, contact assembly; 200a, arc-proof end contact group; 200b, current-carrying end contact group; 210, first contact portion; 211, first movable spring; 212, first stationary contact; 213, second movable contact; 220, second contact portion; 221, second movable spring; 222, first movable contact; 223, second stationary contact; 230, first lead-out piece; 231, first lead-out portion; 232, second lead-out portion; 233, third lead-out portion; 240, second lead-out piece;

[0038] 300, armature assembly; 310, fixing member; 331, swing shaft;

[0039] 500, coil assembly;

[0040] 700, arc extinguishing assembly; 710, magnetic conductive member; 711, first magnetic conductive portion; 7111, notch; 712, second magnetic conductive portion; 713, first positioning portion; 714, first through hole; 720, permanent magnet. DETAILED DESCRIPTION

[0041] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0042] It is understood that the terms "including" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or components that are inherent to these processes, methods, products, or devices.

[0043] The present application embodiment provides a relay, which may be a magnetic latching relay, but is not limited thereto. Figure 1 and Figure 2 As shown, the relay includes a housing 100, a contact assembly 200, an armature assembly 300 and a coil assembly 500. The contact assembly 200 is arranged in the housing 100 and has a closed state and an open state. The armature assembly 300 is arranged in 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 arranged in the housing 100 and is electromagnetically coupled with the armature assembly 300.

[0044] In one embodiment, if Figure 2 As shown, the housing 100 may include a first shell 110 and a second shell 120, which are connected together to form a hollow chamber for accommodating the contact assembly 200, the armature assembly 300 and the coil assembly 500. The shape of the first shell 110 and the second shell 120 after being connected can have various embodiments. For example, in the embodiment of the present application, the shape of the first shell 110 and the second shell 120 after being connected is a hollow cuboid. Of course, in other embodiments, the shape of the first shell 110 and the second shell 120 after being connected can also be a hollow cylinder, or other suitable shapes.

[0045] As an example, the second housing 120 is in the shape of a rectangular parallelepiped with an opening, and the contact assembly 200, the armature assembly 300 and the coil assembly 500 are installed in the second housing 120 through the opening of the second housing 120. The first housing 110 is in the shape of a plate, and the first housing 110 is buckled in the opening of the second housing 120 to form a hollow rectangular parallelepiped.

[0046] Of course, in other embodiments, the first shell 110 and the second shell 120 are both in the shape of a rectangular parallelepiped and have an opening on one surface. The opening of the first shell 110 is arranged opposite to the opening of the second shell 120, and the first shell 110 and the second shell 120 are snapped together to form a hollow chamber for accommodating the contact assembly 200, the armature assembly 300 and the coil assembly 500.

[0047] like Figure 3As shown, the contact assembly 200 includes two contact parts, and the two contact parts are arranged side by side along the thickness direction of the contact part. Moreover, when the two contact parts are in contact, a parallel circuit structure is formed. For the convenience of description, the two contact parts are respectively defined as a first contact part 210 and a second contact part 220.

[0048] The first contact portion 210 includes a first movable spring piece 211, a first static contact 212, and a second movable contact 213, and the first static contact 212 and the second movable contact 213 are respectively mounted at both ends of the length direction of the first movable spring piece 211. As an example, the first static contact 212 and the second movable contact 213 can be mounted on the first movable spring piece 211 by riveting, but the present invention is not limited thereto.

[0049] The second contact portion 220 includes a second movable spring piece 221, a first movable contact 222, and a second static contact 223. The first movable contact 222 and the second static contact 223 are respectively mounted at both ends of the length direction of the second movable spring piece 221. As an example, the first movable contact 222 and the second static contact 223 can be mounted on the second movable spring piece 221 by riveting, but the present invention is not limited thereto.

[0050] like Figure 3 As shown, the first movable spring piece 211 and the second movable spring piece 221 are arranged side by side along the thickness direction of the movable spring piece and are substantially parallel to each other. Along the side-by-side arrangement direction of the first movable spring piece 211 and the second movable spring piece 221, the first movable contact 222 corresponds to the position of the first static contact 212, and the first movable contact 222 is used to contact or separate from the first static contact 212; the second movable contact 213 corresponds to the position of the second static contact 223, and the second movable contact 213 is used to contact or separate from the second static contact 223.

[0051] When the contact assembly 200 is in a closed state, the first movable contact 222 contacts the first stationary contact 212, and the second movable contact 213 contacts the second stationary contact 223, so that the first movable spring piece 211 and the second movable spring piece 221 form a parallel circuit structure. When the contact assembly 200 is in an open state, the first movable contact 222 is separated from the first stationary contact 212, and the second movable contact 213 is separated from the second stationary contact 223.

[0052] like Figure 2 and Figure 3As shown, the relay further includes a fixing member 310, which is fixedly mounted in the housing 100. In one embodiment, the fixing member 310 is connected to the second housing 120, but is not limited thereto. 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 swingably connected to the fixing member 310 through a swing shaft 331, and is used to drive the first moving spring piece 211 and the second moving spring piece 221 to move respectively, so that the first moving contact 222 and the second moving contact 213 are respectively in contact with or separated from the first static contact 212 and the second static contact 223. The coil assembly 500 is configured to drive the armature assembly 300 to swing relative to the fixing member 310 in response to an input signal.

[0053] In one embodiment, when the contact assembly 200 is in the disconnected state, the contact gap between the first movable contact 222 and the first stationary contact 212 is smaller than the contact gap between the second movable contact 213 and the second stationary contact 223 .

[0054] For the convenience of explanation, the first moving contact 222 and the first static contact 212 with a smaller contact gap are defined as the arc-proof end contact group 200a, and the second moving contact 213 and the second static contact 223 with a larger contact gap are defined as the current-carrying end contact group 200b.

[0055] Since the contact gap of the arc-proof end contact group 200a is smaller than the contact gap of the current-carrying end contact group 200b when the contact assembly 200 is in the disconnected state, the current-carrying end contact group 200b will be disconnected before the arc-proof end contact group 200a when the contact assembly 200 is switched from the closed state to the disconnected state, and when the current-carrying end contact group 200b is just disconnected, the arc-proof end contact group 200a has not been completely disconnected. Therefore, the current-carrying end contact group 200b plays a current-carrying role, while the arc-proof end contact group 200a plays an arc-proof role. In other words, the arc-proof end contact group 200a will generate an arc, while the current-carrying end contact group 200b will not generate an arc.

[0056] like Figure 2 and Figure 3 As shown, the first contact portion 210 further includes a first lead-out piece 230, and the second contact portion 220 further includes a second lead-out piece 240. The first lead-out piece 230 is connected to one end of the first movable spring piece 211 provided with the first static contact 212, and a portion of the first lead-out piece 230 extends out of the outer surface of the housing 100. The second lead-out piece 240 is connected to one end of the second movable spring piece 221 provided with the second static contact 223, and a portion of the second lead-out piece 240 extends out of the outer surface of the housing 100. The portions of the first lead-out piece 230 and the second lead-out piece 240 extending out of the outer surface of the housing 100 are used to be connected to the positive and negative electrodes of the load.

[0057] Of course, in other embodiments, the first contact portion 210 and the second contact portion 220 are not limited to adopting a parallel circuit structure when they are closed. For example, in another embodiment, the first contact portion 210 includes a first lead-out piece 601 and a first static contact 212, and the first static contact 212 is disposed on the first lead-out piece 601. The second contact portion 220 includes a second movable spring piece 221 and a first movable contact 222, and the first movable contact 222 is disposed on the second movable spring piece 221. The armature assembly 300 is used to drive the second movable spring piece 221 to move, so that the first movable contact 222 contacts or separates from the first static contact 212.

[0058] like Figures 4 to 6 As shown, the relay further includes an arc extinguishing assembly 700, which is disposed in the housing 100. The arc extinguishing assembly 700 includes a magnetic conductive member 710 and a permanent magnet 720, wherein the magnetic conductive member 710 is connected to the first lead-out piece 230, and the permanent magnet 720 is installed on the side of the magnetic conductive member 710 facing the first moving contact 222 and the first static contact 212 (i.e., the arc-proof end contact group 200a), and is located around the first moving contact 222 and the first static contact 212, and is used to extinguish the arc generated between the first moving contact 222 and the first static contact 212.

[0059] The relay of the embodiment of the present application includes an arc extinguishing assembly 700 for extinguishing the arc between the first moving contact 222 and the first static contact 212. The arc extinguishing assembly 700 includes a magnetic conductive member 710 and a permanent magnet 720. The magnetic conductive member 710 is connected to the first lead-out piece 230, and the permanent magnet 720 is installed on the magnetic conductive member 710. On the one hand, the magnetic conductive member 710 can prevent the magnetic field generated by the permanent magnet 720 from spreading outward and affecting the arc extinguishing effect, thereby enhancing the arc blowing magnetic field strength at the center of the arc. On the other hand, the magnetic conductive member 710 is connected to the first lead-out piece 230, which increases the heat dissipation area of ​​the contact assembly 200, thereby reducing the temperature rise.

[0060] In one embodiment, the magnetic conductive member 710 may be made of a soft magnetic material, which may include but is not limited to iron, cobalt, nickel, and alloys thereof.

[0061] It should also be noted that since the first moving contact 222 and the first static contact 212 constitute the arc-proof end contact group 200a, in the embodiment of the present application, the arc extinguishing assembly 700 is only arranged around the first moving contact 222 and the first static contact 212 (i.e., the arc-proof end contact group 200a) that can generate an arc, and the arc extinguishing assembly 700 is not arranged around the second moving contact 213 and the second static contact 223 (i.e., the current-carrying end contact group 200b) that cannot generate an arc, thereby achieving "targeted" effect and saving material costs.

[0062] like Figures 4 to 6As shown, the first lead-out piece 230 is located on the side of the first movable spring piece 211 facing away from the second movable spring piece 221, and the first lead-out piece 230 includes a first lead-out portion 231, a second lead-out portion 232 and a third lead-out portion 233. The first lead-out portion 231 is connected to the first movable spring piece 211, wherein the first lead-out portion 231 is arranged parallel to the first movable spring piece 211. One end of the second lead-out portion 232 is connected to the first lead-out portion 231, and the other end is connected to the third lead-out portion 233. The third lead-out portion 233 extends out of the outer surface of the housing 100, and is used to be connected to a load.

[0063] In one embodiment, the third lead portion 233 is perpendicular to the second lead portion 232 , the second lead portion 232 is perpendicular to the first lead portion 231 , and the third lead portion 233 and the first lead portion 231 are respectively located on both sides of the second lead portion 232 in the thickness direction.

[0064] like Figures 5 to 7 The magnetic conductive member 710 includes a first magnetic conductive portion 711 and a second magnetic conductive portion 712. The first magnetic conductive portion 711 is located on the side of the first movable reed 211 facing away from the second movable reed 221. The second magnetic conductive portion 712 is connected to the first magnetic conductive portion 711 and is located around the first movable contact 222 and the first static contact 212. The permanent magnet 720 is installed on the side surface of the second magnetic conductive portion 712 facing the first static contact 212.

[0065] In one embodiment, the first magnetic conductive portion 711 is vertically connected to the second magnetic conductive portion 712 , but the present invention is not limited thereto.

[0066] like Figure 6 and Figure 7 As shown, the first magnetic conductive part 711 has a notch 7111. The first lead-out part 231 is located between the first movable spring piece 211 and the first magnetic conductive part 711, and the second lead-out part 232 extends through the notch 7111 to a side surface of the first magnetic conductive part 711 facing away from the first lead-out part 231.

[0067] like Figures 5 to 7 As shown, the first magnetic conductive part 711 of the magnetic conductive member 710 has a first through hole 714, and the first through hole 714 penetrates the first magnetic conductive part 711 along the thickness direction of the first magnetic conductive part 711. The first movable spring piece 211 has a second through hole (not shown in the figure), and the second through hole penetrates the first movable spring piece 211 along the thickness direction of the first movable spring piece 211. The first lead-out part 231 of the first lead-out piece 230 has a third through hole (not shown in the figure), and the third through hole penetrates the first lead-out part 231 along the thickness direction of the first lead-out part 231. The positions of the first through hole 714, the second through hole and the third through hole correspond to each other, and the first static contact 212 is penetrated in the first through hole 714, the second through hole and the third through hole, and the first movable spring piece 211, the magnetic conductive member 710 and the first lead-out piece 230 are riveted.

[0068] In the embodiment of the present application, the first movable spring piece 211 , the magnetic conductive member 710 and the first lead-out piece 230 are riveted together through the first static contact 212 , which can improve the assembly efficiency of the first movable spring piece 211 , the first lead-out piece 230 and the magnetic conductive member 710 .

[0069] It should be noted that, in other embodiments, the magnetic conductive member 710 may not be directly connected to the first static contact 212 , but the magnetic conductive member 710 may be directly connected to the first lead-out piece 230 , for example, by riveting, welding, or the like.

[0070] like Figure 4 and Figure 7 As shown, the magnetic conductive member 710 further includes a first positioning portion 713, and the first positioning portion 713 is connected to an end of the first magnetic conductive portion 711 away from the second magnetic conductive portion 712. The inner wall surface of the second housing 120 is provided with a second positioning portion 121, and the first positioning portion 713 is positioned and matched with the second positioning portion 121. The magnetic conductive member 710 is a sheet-like structure, and the thickness of the magnetic conductive member 710 is less than the thickness of the first lead-out sheet 230.

[0071] In the related art, the first contact portion 210 is usually positioned and connected to the housing 100 through the first lead-out piece 230. Specifically, one end of the first lead-out piece 230 is bent to form a positioning structure, and the positioning structure is positioned and matched with the housing 100. Since the first lead-out piece 230 is used to connect to the load, the thickness of the first lead-out piece 230 needs to be designed to be thicker to ensure that the first lead-out piece 230 has a sufficiently large current capacity. However, when the thickness of the first lead-out piece 230 is thicker, it is not convenient to bend to form a positioning structure, and even if the positioning structure is formed, the space occupied by the positioning structure is also large. Further, in the related art, in order to reduce the space occupied by the positioning structure, the positioning structure is usually flattened, but the flattening process is prone to damage to parts.

[0072] In the embodiment of the present application, the magnetic conductive member 710 is connected to the first lead-out piece 230, and the magnetic conductive member 710 is thinner than the first lead-out piece 230, so a first positioning portion 713 capable of positioning and cooperating with the second positioning portion 121 of the housing 100 is provided on the magnetic conductive member 710. Since the first positioning portion 713 is thin, the space occupied is significantly reduced, and there is no subsequent flattening process. In addition, since the magnetic conductive member 710 and the first lead-out piece 230 are independent parts, the thickness and / or shape of the magnetic conductive member 710 can be flexibly set according to design requirements, without excessive restrictions on thickness due to consideration of current carrying capacity, thereby reducing the processing difficulty of the magnetic conductive member 710.

[0073] Therefore, in the embodiment of the present application, the magnetic conductive member 710 not only plays the role of magnetic conduction and heat dissipation, but also plays the role of positioning. One magnetic conductive member 710 has at least three functions, which reduces the number of parts required for the relay, thereby simplifying the design and manufacturing process and helping to improve production efficiency. In addition, using one part to replace multiple parts can significantly improve space utilization, thereby reducing the product volume.

[0074] In one embodiment, the first positioning portion 713 is formed by integrally bending one end of the magnetic conductive member 710 .

[0075] It is understandable that the thickness of the first lead-out sheet 230 can be designed according to the current carrying capacity, and the thickness of the magnetic conductive member 710 can be designed according to the magnetic conductive requirement. Therefore, in other embodiments, the thickness of the magnetic conductive member 710 can also be equal to or greater than the thickness of the first lead-out sheet 230, and this application does not specifically limit this.

[0076] like Figure 4 As shown, the second positioning portion 121 is a groove, and the first positioning portion 713 is positioned in the groove.

[0077] It is understandable that the second positioning portion 121 in the second shell 120 that is positioned and matched with the first positioning portion 713 is not limited to a groove. For example, the second positioning portion 121 can also be a positioning hole, a positioning protrusion, etc.

[0078] In summary, the relay of the embodiment of the present application has at least the following advantages and beneficial effects:

[0079] The relay of the embodiment of the present application includes an arc extinguishing assembly 700 for extinguishing the arc between the first moving contact 222 and the first static contact 212. The arc extinguishing assembly 700 includes a magnetic conductive member 710 and a permanent magnet 720. The magnetic conductive member 710 is connected to the first lead-out piece 230, and the permanent magnet 720 is installed on the magnetic conductive member 710. On the one hand, the magnetic conductive member 710 can prevent the magnetic field generated by the permanent magnet 720 from spreading outward and affecting the arc extinguishing effect, thereby enhancing the arc blowing magnetic field strength at the center of the arc. On the other hand, the magnetic conductive member 710 is connected to the first lead-out piece 230, which increases the heat dissipation area of ​​the contact assembly 200, thereby reducing the temperature rise.

[0080] Furthermore, the first static contact 212 is inserted into the first through hole 714, the second through hole and the third through hole, and the first movable spring piece 211, the magnetic conductive member 710 and the first lead-out piece 230 are riveted together. The first movable spring piece 211, the magnetic conductive member 710 and the first lead-out piece 230 are riveted together by the first static contact 212, so that the assembly efficiency of the first movable spring piece 211, the first lead-out piece 230 and the magnetic conductive member 710 can be improved.

[0081] Furthermore, the magnetic conductive member 710 not only plays the role of magnetic conduction and heat dissipation, but also plays the role of positioning. One magnetic conductive member 710 has at least three functions, which reduces the number of parts required for the relay, thereby simplifying the design and manufacturing process and helping to improve production efficiency. In addition, using one part instead of multiple parts can significantly improve space utilization, thereby reducing the product volume.

[0082] It is understandable that the various embodiments / implementations provided in the present application can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0083] In the application embodiments, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the application embodiments can be understood according to the specific circumstances.

[0084] In the description of the application embodiments, it should be understood that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the application embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the application embodiments.

[0085] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0086] The above are only preferred embodiments of the application embodiments and are not intended to limit the application embodiments. For those skilled in the art, the application embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application embodiments shall be included in the protection scope of the application embodiments.

Claims

1. A relay, characterized in that: include: A contact assembly, comprising two contact parts, wherein one of the contact parts has a first stationary contact and a first lead-out piece, the first stationary contact is mounted on the first lead-out piece, and the other contact part has a first movable contact for contacting or separating with the first stationary contact; as well as An arc extinguishing assembly includes a magnetic conductive member and a permanent magnet, wherein the magnetic conductive member is connected to the first lead-out piece, and the permanent magnet is installed on the side of the magnetic conductive member facing the first moving contact and the first static contact, and is located around the first moving contact and the first static contact, and is used to extinguish the arc generated between the first moving contact and the first static contact.

2. The relay according to claim 1, characterized in that: The first static contact connects the first lead-out piece and the magnetic conductive member by riveting.

3. The relay according to claim 1, characterized in that: The two contact parts are respectively a first contact part and a second contact part, the first contact part comprises a first movable spring piece, the first static contact point and a second movable contact, the second contact part comprises a second movable spring piece, the first movable contact point and a second static contact point, the second movable contact point is used to contact or separate with the second static contact point; the first movable spring piece and the second movable spring piece are arranged side by side; Wherein, the first static contact connects the first lead-out piece, the magnetic conductive member and the first movable spring piece by riveting.

4. The relay according to claim 3, characterized in that: The magnetic conductive member has a first through hole, the first movable spring piece has a second through hole, the first lead-out piece has a third through hole, the first static contact is penetrated through the first through hole, the second through hole and the third through hole, and the first movable spring piece, the magnetic conductive member and the first lead-out piece are riveted.

5. The relay according to claim 3, characterized in that: The first lead-out piece is located on a side of the first movable spring piece facing away from the second movable spring piece.

6. The relay according to claim 3, characterized in that: The magnetic conductive member includes a first magnetic conductive portion and a second magnetic conductive portion, the first magnetic conductive portion is located on a side of the first movable reed sheet facing away from the second movable reed sheet, and the second magnetic conductive portion is connected to the first magnetic conductive portion and is located around the first movable contact and the first static contact; The permanent magnet is mounted on a surface of the second magnetic conductive portion facing the first static contact.

7. The relay according to claim 6, characterized in that: The first magnetic conductive portion has a gap; The first lead-out piece includes a first lead-out portion and a second lead-out portion, the first lead-out portion is located between the first movable spring piece and the first magnetic conductive portion, the second lead-out portion is connected to the first lead-out portion, and extends through the notch to a side surface of the first magnetic conductive portion facing away from the first lead-out portion.

8. The relay according to claim 7, characterized in that: The first lead-out piece also includes a third lead-out portion, which is connected to an end of the second lead-out portion away from the first lead-out portion; the third lead-out portion is perpendicular to the second lead-out portion, and the second lead-out portion is perpendicular to the first lead-out portion, and the third lead-out portion and the first lead-out portion are respectively located on both sides of the second lead-out portion in the thickness direction.

9. The relay according to claim 1, characterized in that: The two contact parts are respectively a first contact part and a second contact part, the first contact part includes a first movable spring piece, the first static contact point and a second movable contact, the second contact part includes a second movable spring piece, the first movable contact point and a second static contact point, and the second movable contact point is used to contact or separate with the second static contact point; Wherein, when the contact assembly is in a disconnected state, a contact gap between the first moving contact and the first stationary contact is smaller than a contact gap between the second moving contact and the second stationary contact.

10. The relay according to any one of claims 1 to 9, characterized in that: The relay further comprises a housing, the contact assembly and the arc extinguishing assembly are arranged in the housing, a portion of the first lead-out piece extends out of the outer surface of the housing, and a second positioning portion is arranged on the inner wall surface of the housing; The magnetic conductive member has a first positioning portion, and the first positioning portion is positioned and matched with the second positioning portion.

11. The relay according to claim 10, characterized in that: The second positioning portion is a groove, and the first positioning portion is positioned in the groove.

12. The relay according to claim 10, characterized in that: The magnetic conductive member is a sheet-shaped structure, and the thickness of the magnetic conductive member is smaller than the thickness of the first lead-out sheet.

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