Relay

Abstract

The utility model 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, in particular to a relay. BACKGROUND

[0002] A relay is an electronic control device, which has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is usually applied in an automatic control circuit. The relay is actually a kind of "automatic switch" that uses a small current to control a large current. Therefore, it plays a role of automatic regulation, safety protection, and conversion of circuits in the circuit.

[0003] With the continuous expansion of the application range of the relay, the relay is also developing towards high load and miniaturization. However, the temperature rise problem of the relay in the related art has not been well solved. The excessively high temperature rise easily leads to accelerated aging of the plastic and insulating materials inside the relay, oxidation and corrosion of the contact points, and difficulty in arc extinction, and further leads to problems such as decay of electrical element technical parameters and reduction of reliability. CONTENT OF THE INVENTION

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

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

[0006] a contact assembly comprising two contact parts, one of the contact parts has a first static contact and a first lead-out sheet, the first static contact is arranged on the first lead-out sheet, and the other contact part has a first moving contact for contacting or separating from the first static contact; and

[0007] an arc extinguishing assembly comprising a magnetic conducting piece and a permanent magnet, the magnetic conducting piece is connected with the first lead-out sheet, the permanent magnet is arranged on a side of the magnetic conducting piece 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 for extinguishing an 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 sheet and the magnetic conducting piece by riveting.

[0009] According to some embodiments of the present application, the two contact parts are a first contact part and a second contact part respectively, the first contact part comprises a first moving spring sheet, the first static contact and a second moving contact, the second contact part comprises a second moving spring sheet, the first moving contact and a second static contact, the second moving contact is used for contacting or separating from the second static contact, and the first moving spring sheet and the second moving spring sheet are arranged side by side.

[0010] The first static contact point connects the first lead-out sheet, the magnetic conducting member and the first moving spring sheet by riveting.

[0011] According to some embodiments of the present application, the magnetic conducting member has a first through hole, the first moving spring sheet has a second through hole, the first lead-out sheet has a third through hole, and the first static contact point is arranged in the first through hole, the second through hole and the third through hole, and the first moving spring sheet, the magnetic conducting member and the first lead-out sheet are riveted.

[0012] According to some embodiments of the present application, the first lead-out sheet is located on the side of the first moving spring sheet away from the second moving spring sheet.

[0013] According to some embodiments of the present application, the magnetic conducting member comprises a first magnetic conducting part and a second magnetic conducting part, the first magnetic conducting part is located on the side of the first moving spring sheet away from the second moving spring sheet, and the second magnetic conducting part is connected with the first magnetic conducting part and located around the first moving contact point and the first static contact point.

[0014] The permanent magnet is arranged on the side surface of the second magnetic conducting part facing the first static contact point.

[0015] According to some embodiments of the present application, the first magnetic conducting part has a notch.

[0016] The first lead-out sheet comprises a first lead-out part and a second lead-out part, the first lead-out part is located between the first moving spring sheet and the first magnetic conducting part, and the second lead-out part is connected with the first lead-out part and extends out of the side surface of the first magnetic conducting part away from the first lead-out part through the notch.

[0017] According to some embodiments of the present application, the first lead-out sheet further comprises a third lead-out part, the third lead-out part is connected with the end of the second lead-out part away from the first lead-out part, the third lead-out part is perpendicular to the second lead-out part, the second lead-out part is perpendicular to the first lead-out part, and the third lead-out part and the first lead-out part are respectively located on two sides of the thickness direction of the second lead-out part.

[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 comprises the first moving spring sheet, the first static contact point and a second moving contact point, the second contact part comprises the second moving spring sheet, the first moving contact point and a second static contact point, and the second moving contact point is used to contact or separate from the second static contact point.

[0019] In the disconnected state of the contact assembly, the contact gap between the first moving contact point and the first static contact point is smaller than the contact gap between the second moving contact point and the second static contact point.

[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 part of the first lead-out sheet extends out of an outer surface of the housing, and an inner wall surface of the housing is provided with a second positioning part;

[0021] The magnetic conducting member has a first positioning part which is positioned and matched with the second positioning part.

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

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

[0024] The above-mentioned one embodiment of the application has at least the following advantages or beneficial effects:

[0025] The relay of the embodiment of the present application comprises an arc extinguishing assembly for extinguishing an electric arc between the first moving contact and the first stationary contact, the arc extinguishing assembly comprises a magnetic conducting member and a permanent magnet, the magnetic conducting member is connected with the first lead-out sheet, and the permanent magnet is arranged on the magnetic conducting member. On the one hand, the magnetic conducting 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 strength of the arc center. On the other hand, the magnetic conducting member is connected with the first lead-out sheet, thereby increasing the heat dissipation area of the contact assembly and further reducing the temperature rise.

[0026] Further, the first stationary contact is arranged in the first through hole, the second through hole and the third through hole, and the first moving spring sheet, the magnetic conducting member and the first lead-out sheet are riveted. By riveting the first moving spring sheet, the magnetic conducting member and the first lead-out sheet through the first stationary contact, the assembly efficiency of the first moving spring sheet, the first lead-out sheet and the magnetic conducting member can be improved.

[0027] Further, the magnetic conducting member not only plays a role of magnetic conducting and heat dissipation, but also plays a role of positioning, one magnetic conducting member has at least three functions, thereby reducing the number of parts required by the relay, simplifying the design and manufacturing process, and helping to improve the production efficiency. Moreover, using one part instead of multiple parts can significantly improve the space utilization, thereby reducing the product volume. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 Fig. 1 shows a perspective view of a relay according to an embodiment of the present application.

[0029] Figure 2 Fig. 2 shows an exploded view of the relay according to the embodiment of the present application.

[0030] Figure 3 Fig. 3 shows a schematic view of the relay according to the embodiment of the present application, in which some parts are omitted.Figure 1 Fig. 1 is a top view of a first housing and a fixing member.

[0031] Figure 4 Fig. 2 is a top view showing that a first contact part and an arc extinguishing assembly are installed in a second housing.

[0032] Figure 5 Fig. 3 is a perspective view showing that the arc extinguishing assembly is assembled with the first contact part from one perspective.

[0033] Figure 6 Fig. 4 is a perspective view showing that the arc extinguishing assembly is assembled with the first contact part from another perspective.

[0034] Figure 7 Fig. 5 is a perspective view showing a magnetic conducting member.

[0035] In the drawings, the following reference numerals are used:

[0036] 100: housing; 110: first housing; 120: second housing; 121: second positioning part;

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

[0038] 300: armature assembly; 310: fixing member; 331: swing axis;

[0039] 500: coil assembly;

[0040] 700: arc extinguishing assembly; 710: magnetic conducting member; 711: first magnetic conducting part; 7111: notch; 712: second magnetic conducting part; 713: first positioning part; 714: first perforation; 720: permanent magnet. DETAILED DESCRIPTION

[0041] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and descriptions of the same elements will be omitted from descriptions of subsequent figures.

[0042] It is to be understood that the terms "including", "comprising", "having" and variations thereof herein are intended to cover all possible combinations of the listed steps or units and are not to be construed as limiting. For example, a process, method, system, product or apparatus that comprises a list of steps or units is not necessarily limited to only those steps or units that are listed, but can include additional steps or units that are not expressly listed or can include steps or units of which an otherwise indicated process, method, system, product or apparatus is comprised.

[0043] Embodiments of the present application provide a relay, which can be a latching relay, but is not limited thereto. As shown in Figure 1 and Figure 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 in the housing 100 and has a closed state and an open state. The armature assembly 300 is disposed in the housing 100 and is configured 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 in the housing 100 and is electromagnetically coupled to the armature assembly 300.

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

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

[0046] Of course, in other embodiments, the first housing 110 and the second housing 120 are both cuboid-shaped and have openings on one face, the openings of the first housing 110 and the second housing 120 are oppositely arranged, and the first housing 110 and the second housing 120 are buckled to form a hollow chamber for accommodating the contact assembly 200, the armature assembly 300 and the coil assembly 500.

[0047] As shown in Figure 3As shown, the contact assembly 200 includes two contact portions, which are arranged side by side along the thickness direction of the contact portions. Moreover, the two contact portions form a parallel circuit structure when in contact. For ease of illustration, the two contact portions are defined as a first contact portion 210 and a second contact portion 220, respectively.

[0048] The first contact portion 210 includes a first moving spring piece 211, a first stationary contact 212, and a second moving contact 213, which are respectively arranged at two ends of the first moving spring piece 211 in the length direction. As an example, the first stationary contact 212 and the second moving contact 213 can be arranged on the first moving spring piece 211 by riveting, but are not limited thereto.

[0049] The second contact portion 220 includes a second moving spring piece 221, a first moving contact 222, and a second stationary contact 223, which are respectively arranged at two ends of the second moving spring piece 221 in the length direction. As an example, the first moving contact 222 and the second stationary contact 223 can be arranged on the second moving spring piece 221 by riveting, but are not limited thereto.

[0050] As shown, the first moving spring piece 211 and the second moving spring piece 221 are arranged side by side along the thickness direction of the moving spring pieces and are substantially parallel to each other. Along the side-by-side arrangement direction of the first moving spring piece 211 and the second moving spring piece 221, the first moving contact 222 corresponds in position to the first stationary contact 212, and the first moving contact 222 is configured to contact or separate from the first stationary contact 212; the second moving contact 213 corresponds in position to the second stationary contact 223, and the second moving contact 213 is configured to contact or separate from the second stationary contact 223. Figure 3 When the contact assembly 200 is in a 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 piece 211 and the second moving spring piece 221 form a parallel circuit structure. When the contact assembly 200 is in an 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.

[0051] As shown, the first moving spring piece 211 and the second moving spring piece 221 are arranged side by side along the thickness direction of the moving spring pieces and are substantially parallel to each other. Along the side-by-side arrangement direction of the first moving spring piece 211 and the second moving spring piece 221, the first moving contact 222 corresponds in position to the first stationary contact 212, and the first moving contact 222 is configured to contact or separate from the first stationary contact 212; the second moving contact 213 corresponds in position to the second stationary contact 223, and the second moving contact 213 is configured to contact or separate from the second stationary contact 223.

[0052] Figure 2 and Figure 3 ​As shown, the relay also includes a fixing member 310, which is fixedly mounted within the housing 100. In one embodiment, the fixing member 310 is connected to the second housing 120, but this is not a limitation. 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 via a pivot shaft 331, which drives 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.

[0053] 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.

[0054] 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.

[0055] 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.

[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 moving spring 211 that has a first stationary contact 212, and a portion of the first lead-out piece 230 extends beyond the outer surface of the housing 100. The second lead-out piece 240 is connected to one end of the second moving spring 221 that has a second stationary contact 223, and a portion of the second lead-out piece 240 extends beyond the outer surface of the housing 100. The portions of the first lead-out piece 230 and the second lead-out piece 240 extending beyond the outer surface of the housing 100 are used to connect to the positive and negative terminals of the load.

[0057] 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.

[0058] like Figures 4 to 6 As shown, the relay also includes an arc-extinguishing assembly 700, which is disposed within the housing 100. The arc-extinguishing assembly 700 includes a magnetic conductor 710 and a permanent magnet 720. The magnetic conductor 710 is connected to the first lead-out piece 230. The permanent magnet 720 is mounted on the side of the magnetic conductor 710 facing the first moving contact 222 and the first stationary contact 212 (i.e., the arc-resistant end contact group 200a), and is located around the first moving contact 222 and the first stationary contact 212, for extinguishing the arc generated between the first moving contact 222 and the first stationary contact 212.

[0059] The relay of this application embodiment includes an arc-extinguishing assembly 700 for extinguishing the arc between the first moving contact 222 and the first stationary contact 212. The arc-extinguishing assembly 700 includes a magnetic conductor 710 and a permanent magnet 720. The magnetic conductor 710 is connected to the first lead-out piece 230, and the permanent magnet 720 is mounted on the magnetic conductor 710. On the one hand, the magnetic conductor 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 connection between the magnetic conductor 710 and the first lead-out piece 230 increases the heat dissipation area of ​​the contact assembly 200, thereby reducing the temperature rise.

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

[0061] It should also be noted that, since the first moving contact 222 and the first stationary contact 212 constitute the arc-resistant end contact group 200a, in this embodiment of the application, the arc-extinguishing component 700 is only provided 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, and 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 cannot generate an electric arc, so as to achieve "targeted" and save 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 and the first movable spring piece 211 are arranged parallel to each other. 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 for connection with a load.

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

[0064] like Figures 5 to 7 The magnetic conductor 710 includes a first magnetic conductor 711 and a second magnetic conductor 712. The first magnetic conductor 711 is located on the side of the first moving spring 211 facing away from the second moving spring 221. The second magnetic conductor 712 is connected to the first magnetic conductor 711 and is located around the first moving contact 222 and the first stationary contact 212. The permanent magnet 720 is mounted on the surface of the second magnetic conductor 712 facing the first stationary contact 212.

[0065] In one embodiment, the first magnetic conductive part 711 and the second magnetic conductive part 712 are perpendicularly connected, but this is not a limitation.

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

[0067] like Figures 5 to 7 As shown, the first magnetic part 711 of the magnetic conductor 710 has a first through hole 714, which penetrates the first magnetic part 711 along its thickness direction. The first movable spring 211 has a second through hole (not shown), which penetrates the first movable spring 211 along its thickness direction. The first lead-out part 231 of the first lead-out piece 230 has a third through hole (not shown), which penetrates the first lead-out part 231 along its thickness direction. The first through hole 714, the second through hole, and the third through hole are positioned correspondingly. The first stationary contact 212 passes through the first through hole 714, the second through hole, and the third through hole, and rivets the first movable spring 211, the magnetic conductor 710, and the first lead-out piece 230 together.

[0068] In the embodiment of the present application, the first moving spring piece 211, the magnetic conducting piece 710 and the first lead-out piece 230 are riveted by the first stationary contact 212, which can improve the assembly efficiency of the first moving spring piece 211, the first lead-out piece 230 and the magnetic conducting piece 710.

[0069] It should be noted that in other embodiments, the magnetic conducting piece 710 can also not be directly connected with the first stationary contact 212, but the magnetic conducting piece 710 is directly connected with the first lead-out piece 230, for example, by riveting, welding or the like.

[0070] As shown in FIGS. 1, 2 and 3, the first lead-out piece 230 is connected with the first moving spring piece 211 and the magnetic conducting piece 710. Figure 4 and Figure 7 As shown in FIGS. 1, 2 and 3, the first lead-out piece 230 is connected with the first moving spring piece 211 and the magnetic conducting piece 710.

[0071] In the related art, the first contact part 210 is usually connected with the shell 100 by the first lead-out piece 230. Specifically, one end of the first lead-out piece 230 is bent to form a positioning structure, which is positioned and matched with the shell 100. Since the first lead-out piece 230 is used to be connected with a load, the thickness of the first lead-out piece 230 needs to be designed to be relatively thick to ensure that the first lead-out piece 230 has a large enough current carrying capacity. However, when the thickness of the first lead-out piece 230 is relatively thick, it is not convenient to bend to form the positioning structure, and even if the positioning structure is formed, the space occupied by the positioning structure is relatively 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 easy to cause damage to the parts.

[0072] In the embodiment of the present application, the magnetic conducting piece 710 is connected with the first lead-out piece 230, and the thickness of the magnetic conducting piece 710 is relatively thin compared with the thickness of the first lead-out piece 230, so that the first positioning part 713 capable of being positioned and matched with the second positioning part 121 of the shell 100 is arranged on the magnetic conducting piece 710. Since the thickness of the first positioning part 713 is relatively thin, the space occupied is significantly reduced, and there is no subsequent flattening process. In addition, since the magnetic conducting piece 710 and the first lead-out piece 230 are independent parts, the thickness and / or shape of the magnetic conducting piece 710 can be flexibly set according to design requirements, without being excessively limited by the current carrying capacity, which reduces the processing difficulty of the magnetic conducting piece 710.

[0073] Therefore, in the embodiment of the application, the magnetic conductive member 710 not only plays a role of magnetic conduction and heat dissipation, but also plays a role of positioning. The magnetic conductive member 710 has at least three functions, thereby reducing the number of parts required by the relay, 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 volume of the product.

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

[0075] It can be understood 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 conduction 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 the application does not make special limitations on this.

[0076] As shown in FIG. 7, the first positioning portion 713 is located in the second positioning portion 121. Figure 4

[0077] It can be understood that the second positioning portion 121 in the second housing 120 which 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 application has at least the following advantages and beneficial effects:

[0079] The relay of the embodiment of the application includes an arc extinguishing assembly 700 for extinguishing the arc between the first moving contact 222 and the first stationary 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 with the first lead-out sheet 230, and the permanent magnet 720 is arranged 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 of the arc center. On the other hand, the magnetic conductive member 710 is connected with the first lead-out sheet 230, thereby increasing the heat dissipation area of the contact assembly 200, and further playing a role of reducing the temperature rise.

[0080] Further, the first stationary contact 212 is arranged in the first through hole 714, the second through hole and the third through hole, and the first moving spring sheet 211, the magnetic conductive member 710 and the first lead-out sheet 230 are riveted. By riveting the first moving spring sheet 211, the magnetic conductive member 710 and the first lead-out sheet 230 through the first stationary contact 212, the assembly efficiency of the first moving spring sheet 211, the first lead-out sheet 230 and the magnetic conductive member 710 can be improved.

[0081] ​Further, the magnetic conductive member 710 not only plays a role of conducting magnetic field and dissipating heat, but also plays a role of positioning. One magnetic conductive member 710 has at least three functions, thereby reducing the number of parts required by the relay, simplifying the design and manufacturing process, and helping to improve production efficiency. Moreover, using one part instead of multiple parts can significantly improve space utilization, thereby reducing the product size.

[0082] It can be understood that the various embodiments / embodiments provided by the application can be combined with each other without contradiction, which will not be illustrated one by one here.

[0083] In the embodiments of the application, the terms "first", "second", "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, "connecting" can be fixed connection, or detachable connection, or integral connection; "connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0084] In the description of the embodiments of the application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the purpose of facilitating the description of the embodiments of the application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the embodiments of the application.

[0085] In the description of the present application, the terms "one embodiment", "some embodiments", "specific embodiments" and the like described in the description mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the application. In the present application, the illustrative description 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 is only the preferred embodiment of the application, and is not intended to limit the application. For those skilled in the art, the application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A relay characterized by comprising: The application relates to a contact assembly and an arc extinguishing assembly. The contact assembly comprises two contact parts, one of which has a first static contact point and a first lead-out sheet, and the other of which has a first dynamic contact point for contacting or separating from the first static contact point. The arc extinguishing assembly comprises a magnetic conducting piece and a permanent magnet, the magnetic conducting piece is connected with the first lead-out sheet, the permanent magnet is arranged on one side of the magnetic conducting piece facing the first dynamic contact point and the first static contact point and is located around the first dynamic contact point and the first static contact point, and is used for extinguishing an arc generated between the first dynamic contact point and the first static contact point. The first static contact point connects the first lead-out sheet and the magnetic conducting piece through riveting.

2. 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 dynamic spring sheet, the first static contact point and a second dynamic contact point, the second contact part comprises a second dynamic spring sheet, the first dynamic contact point and a second static contact point, the second dynamic contact point is used for contacting or separating from the second static contact point, and the first dynamic spring sheet is arranged side by side with the second dynamic spring sheet.

3. The relay of claim 1, wherein The first static contact point connects the first lead-out sheet, the magnetic conducting piece and the first dynamic spring sheet through riveting. The magnetic conducting piece has a first perforation, the first dynamic spring sheet has a second perforation, the first lead-out sheet has a third perforation, the first static contact point is arranged in the first perforation, the second perforation and the third perforation and is used for riveting the first dynamic spring sheet, the magnetic conducting piece and the first lead-out sheet.

4. The relay according to claim 3, characterized in that The first lead-out sheet is located on one side of the first dynamic spring sheet away from the second dynamic spring sheet.

5. The relay of claim 3, wherein The magnetic conducting piece comprises a first magnetic conducting part and a second magnetic conducting part, the first magnetic conducting part is located on one side of the first dynamic spring sheet away from the second dynamic spring sheet, the second magnetic conducting part is connected with the first magnetic conducting part and is located around the first dynamic contact point and the first static contact point.

6. The relay of claim 3, wherein The permanent magnet is arranged on a side surface of the second magnetic conducting part facing the first static contact point. The first magnetic conducting part has a notch.

7. The relay according to claim 6, characterized in that The first lead-out sheet comprises a first lead-out part and a second lead-out part, the first lead-out part is located between the first dynamic spring sheet and the first magnetic conducting part, the second lead-out part is connected with the first lead-out part and extends out of a side surface of the first magnetic conducting part away from the first lead-out part through the notch. The first lead-out sheet further comprises a third lead-out part, the third lead-out part is connected with one end of the second lead-out part away from the first lead-out part, the third lead-out part is perpendicular to the second lead-out part, the second lead-out part is perpendicular to the first lead-out part, and the third lead-out part and the first lead-out part are respectively located on two sides in a thickness direction of the second lead-out part.

8. The relay according to claim 7, 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 dynamic spring sheet, the first static contact point and a second dynamic contact point, the second contact part comprises a second dynamic spring sheet, the first dynamic contact point and a second static contact point, the second dynamic contact point is used for contacting or separating from the second static contact point.

9. The relay of claim 1, wherein ​ Wherein, when the contact assembly is in the off 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.

10. A relay according to any one of claims 1-9, characterized in that The relay further comprises a housing, the contact assembly and the arc extinguishing assembly are arranged in the housing, a part of the first lead-out sheet extends out of the outer surface of the housing, and an inner wall surface of the housing is provided with a second positioning part; The magnetic conducting member is provided with a first positioning part, and the first positioning part is in positioning cooperation with the second positioning part.

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

12. The relay of claim 10, wherein, The magnetic conducting member is in a sheet structure, and the thickness of the magnetic conducting member is smaller than the thickness of the first lead-out sheet.

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