Magnetic circuit structure and relay

Abstract

This application relates to a magnetic circuit structure and a relay. The magnetic circuit structure includes: a yoke having openings facing each other along a first direction; a coil frame having electrically connected lead-out terminals and conductive terminals, both positioned near the openings and located on either side of the coil; enameled wire wound around the coil frame to form a coil, with the ends of the enameled wire serving as lead-out wires wound and connected to the lead-out terminals; a flexible connector, one end of which is mounted to the conductive terminal, and the other end of which is used for connecting an external conductor; and a protective member disposed on the yoke, located at the openings, for protecting unsoldered lead-out wires on the lead-out terminals and for protecting the flexible connectors on the conductive terminals. This prevents external components from contacting the unsoldered lead-out wires and flexible connectors, thereby improving the reliability of the relay.

Description

Technical Field

[0001] This application relates to the field of relay technology, and in particular to a magnetic circuit structure and a relay. Background Technology

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

[0003] Typically, relays have lead plates on the coil frame. The lead wire at one end of the coil is wound around these lead plates to meet the needs of customer connection and PCB board soldering. After the lead wire is wound around the lead plate, it remains exposed on the outside. During transportation, handling, and installation, the lead wire may be touched, causing it to break and leading to relay malfunction. Utility Model Content

[0004] Therefore, it is necessary to address the problem of exposed leads in current relays leading to wire breakage during transportation and installation. A magnetic circuit structure and relay should be provided to protect the leads, preventing them from being touched during transport and installation, thus ensuring the performance of the magnetic circuit structure and improving the reliability of the relay.

[0005] A magnetic circuit structure, comprising:

[0006] A yoke having openings opposite each other along a first direction;

[0007] A coil frame is disposed in the yoke, the coil frame having electrically connected lead-out terminals and conductive terminals, both of which are disposed close to the opening and located on both sides of the coil;

[0008] Enamelled wire is wound around the coil frame to form a coil, and the end of the enamelled wire is a lead wire, which is wound and connected to the lead terminal;

[0009] A flexible connector, one end of which is attached to the conductive terminal, and the other end of which is used to connect an external wire; and

[0010] A protective element is disposed on the yoke, the protective element is located in the opening, the protective element is used to protect the unsoldered lead wire on the lead terminal, and to protect the flexible wire on the conductive terminal.

[0011] In this way, the protective component can protect the unsoldered leads on the terminals at the opening, preventing them from being exposed to the outside. The protective component also protects the flexible wires on the conductive terminals. During the relay's transportation and installation, because the protective component is located outside the leads, conductive terminals, leads, and flexible wires, it prevents external parts from touching the unsoldered leads and flexible wires, thus protecting them from breakage and ensuring the performance of the magnetic circuit structure, thereby improving the relay's reliability.

[0012] In one embodiment of this application, the protective member is located on the side of the lead terminal away from the coil, so as to at least shield the unsoldered lead wires on the lead terminal;

[0013] And / or, the protective element is located on the side of the conductive terminal away from the coil, so as to at least shield the flexible wiring on the conductive terminal.

[0014] This prevents unsoldered leads and flexible wires from being exposed at the opening, thus providing shielding and protection for them.

[0015] In one embodiment of this application, the protective member includes a support portion and a protective portion, one end of the support portion is connected to the yoke, and the other end is connected to the protective portion;

[0016] The protective portion is located on the side of the lead-out terminal away from the coil, and / or the protective portion is located on the side of the conductive terminal away from the coil.

[0017] In this way, the protective part can shield the unsoldered leads on the lead terminals, thus protecting the unsoldered leads.

[0018] In one embodiment of this application, the dimensions of the protective portion are adapted to the height and width dimensions of the unsoldered lead wire wound around the lead terminal;

[0019] And / or, the dimensions of the protective portion are adapted to the height and width dimensions of the unsoldered lead wire wound around the conductive terminal.

[0020] In this way, it is possible to protect the unsoldered leads on the leads-out terminals while reducing the size of the protective part and the overall weight of the magnetic circuit structure.

[0021] In one embodiment of this application, the protective member and the yoke are an integral structure;

[0022] And / or, the protective component is plate-shaped;

[0023] And / or, the protective element is made of the same material as the yoke.

[0024] This facilitates the molding and processing of protective components and ensures the protection of unsoldered leads.

[0025] In one embodiment of this application, the yoke includes a support base plate and two support side plates. The two support side plates are disposed opposite to each other on both sides of the support base plate along a third direction and together with the support base plate form an installation space. The coil frame is located in the installation space.

[0026] In this way, the supporting side plate and the supporting base plate can protect the coil, and at the same time, the protective component protects the unsoldered leads on the lead terminals at the opening.

[0027] In one embodiment of this application, the protective member is disposed on the supporting side plate;

[0028] Alternatively, the protective element may be disposed on the supporting substrate.

[0029] Thus, protective components can be installed on the support side plate to protect unsoldered leads, or they can be installed on the support substrate to protect unsoldered leads.

[0030] In one embodiment of this application, the coil frame has two leads, the two leads are spaced apart, the two leads are respectively wound and connected to the leads, each of the protective members blocks the leads on the corresponding leads, or, at least one end of the protective member is connected to the yoke and simultaneously blocks the leads on both leads;

[0031] And / or, the coil frame has two conductive terminals, the two conductive terminals are spaced apart, the two conductive terminals are respectively wound and connected to the lead wire, each of the protective members blocks the flexible wire on the corresponding conductive terminal, or, at least one end of the protective member is connected to the yoke and simultaneously blocks the flexible wire on both conductive terminals.

[0032] In this way, a structure with corresponding protective components can be set up while protecting the unsoldered leads.

[0033] In one embodiment of this application, the magnetic circuit structure further includes a moving iron core and a stationary iron core. The coil frame has a mounting hole extending through a second direction. The stationary iron core is disposed in the mounting hole. The moving iron core is movably mounted in the mounting hole and partially exposed in the coil frame. The moving iron core can be attracted to or separated from the stationary iron core.

[0034] And / or, the magnetic circuit structure further includes a mounting plate disposed on the yoke and covering the coil frame.

[0035] In this way, the closure or opening of the magnetic circuit structure is controlled by the moving iron core and the stationary iron core.

[0036] In one embodiment of this application, the coil frame includes a mounting base, a top plate, and a winding post. The winding post extends along a second direction, and the mounting base and the top plate are disposed at both ends of the winding post. The enameled wire is wound and connected to the winding post to form the coil.

[0037] The lead-out terminal and one end of the conductive terminal are disposed in the mounting base and electrically connected in the mounting base. The lead-out terminal and the conductive terminal are arranged at intervals from the winding post.

[0038] In this way, by winding the enameled wire around the winding post and limiting the enameled wire by the mounting base and top plate, the conductive terminals and lead-out terminals can be electrically connected in the mounting base.

[0039] In one embodiment of this application, the lead-out terminal and the conductive terminal are an integral structure, or the lead-out terminal and the conductive terminal are separate structures.

[0040] In this way, conductive connections can be achieved between the lead-out terminals and the conductive terminals in the mounting base.

[0041] A magnetic circuit structure, comprising:

[0042] A yoke having openings opposite each other along a first direction;

[0043] A coil frame is disposed in the yoke, the coil frame having extended lead-out terminals disposed near the opening;

[0044] Enamelled wire is wound around the coil frame to form a coil, and the end of the enamelled wire is a lead wire, which is wound and connected to the lead terminal; and

[0045] A protective element is disposed on the yoke, the protective element is located in the opening and on the side of the lead-out terminal away from the coil, the protective element is used to protect the lead-out wire that is not soldered on the lead-out terminal.

[0046] In this way, the protective component can protect the unsoldered leads on the terminals at the opening, preventing them from being exposed to the outside. During the relay's transportation and installation, because the protective component is located outside the terminals and leads, it can prevent external parts from touching the unsoldered leads, thus protecting them from breakage and ensuring the performance of the magnetic circuit structure, thereby improving the relay's reliability.

[0047] A relay includes a connection assembly, a contact assembly, and a magnetic circuit structure as described in any of the above technical features;

[0048] The connecting component is disposed at one end of the moving iron core extending from the coil frame in the magnetic circuit structure. The contact component includes a moving contact and a stationary contact. The moving contact is disposed in the connecting component. The stationary contact and the moving contact are arranged opposite to each other along the second direction.

[0049] The moving iron core can drive the connecting component and the moving contact to move along the second direction, so that the moving contact can contact or separate from the stationary contact.

[0050] By adopting the aforementioned magnetic circuit structure, the relay can prevent external components from coming into contact with unsoldered leads and flexible wires during transportation and installation, thus protecting the unsoldered leads and flexible wires and preventing wire breakage, thereby improving the reliability of the relay. Attached Figure Description

[0051] Figure 1 This is a schematic diagram of the magnetic circuit structure of the first embodiment of this application.

[0052] Figure 2 for Figure 1 The diagram shows a magnetic circuit structure applied to a relay.

[0053] Figure 3 for Figure 2 The diagram shown is an exploded view of the relay.

[0054] Figure 4 for Figure 1 The front view of the magnetic circuit structure shown.

[0055] Figure 5 for Figure 1 The side view of the magnetic circuit structure shown.

[0056] Figure 6 for Figure 1 A top view of the magnetic circuit structure shown.

[0057] Figure 7 for Figure 4 The magnetic circuit structure shown is a cross-sectional view at point AA.

[0058] Figure 8 This is a schematic diagram of the magnetic circuit structure in the second embodiment of this application.

[0059] Figure 9 for Figure 8 The front view of the magnetic circuit structure shown.

[0060] Figure 10 for Figure 8 The side view of the magnetic circuit structure shown.

[0061] Figure 11 for Figure 8 A top view of the magnetic circuit structure shown.

[0062] Figure 12 for Figure 9 The magnetic circuit structure shown is a cross-sectional view at BB.

[0063] Figure 13 This is a schematic diagram of the magnetic circuit structure in the third embodiment of this application.

[0064] Figure 14 for Figure 13 The front view of the magnetic circuit structure shown.

[0065] Figure 15 for Figure 13 The side view of the magnetic circuit structure shown.

[0066] Figure 16 for Figure 13 A top view of the magnetic circuit structure shown.

[0067] Figure 17 for Figure 14 The magnetic circuit structure shown is a cross-sectional view at CC.

[0068] Wherein: 10, relay; 100, magnetic circuit structure; 110, yoke; 111, opening; 112, support base plate; 113, support side plate; 120, coil frame; 121, lead-out terminal; 122, mounting base; 123, top plate; 124, conductive terminal; 130, coil; 131, lead-out wire; 140, protective component; 141, support part; 142, protective part; 150, moving iron core; 160, stationary iron core; 170, mounting plate; 200, connecting assembly; 300, contact assembly; 310, moving contact; 320, stationary contact; 400, base plate; 500, lead-out terminal. Detailed Implementation

[0069] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0070] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0071] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0072] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0073] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0074] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0075] Understandably, a relay is an electronic control device. Typically, a relay has leads on a coil frame, around which the lead wire at one end of the coil is wound to meet the needs of customer connection and PCB board soldering. After the lead wire is wound around the lead frame, it is exposed on the outside. During transportation, handling, and installation, the lead wire may be touched, causing it to break and leading to relay failure.

[0076] For this purpose, please refer to Figures 1 to 4 , Figure 8 , Figure 13 This application provides a magnetic circuit structure 100. This magnetic circuit structure 100 is applied in a relay 10. Figure 1 This is a schematic diagram of the magnetic circuit structure 100 according to the first embodiment of this application. Figure 2 for Figure 1 The diagram shown illustrates the application of the magnetic circuit structure 100 to the relay 10. Figure 3 for Figure 2 The exploded view of relay 10 shown is shown below. Figure 4 for Figure 1 The front view of the magnetic circuit structure 100 shown is shown. Figure 8 This is a schematic diagram of the magnetic circuit structure 100 in the second embodiment of this application. Figure 13 This is a schematic diagram of the magnetic circuit structure 100 in the third embodiment of this application.

[0077] To better illustrate the specific structure of the magnetic circuit structure 100, the structure of the relay 10 will be briefly introduced here. (See also...) Figures 1 to 3 The relay 10 includes at least a connection component 200, a contact component 300, and a magnetic circuit structure 100 as described in this application. The magnetic circuit structure 100 is the power source for the relay 10, and its output terminal is connected to the connection component 200, enabling the connection component 200 to move along the height direction.

[0078] This application is based on Figure 1 , Figure 8 and Figure 13The first, second, and third directions shown are used as references. The first direction is the front-to-back direction, the second direction is the height direction, the up-down direction, the top-to-bottom direction, and the axial direction, and the third direction is the left-to-right direction. These first, second, and third directions also apply to the various components of the relay 10, and will not be described again later. The contact assembly 300 includes a moving contact 310 and a stationary contact 320. The stationary contact 320 and the moving contact 310 are arranged opposite to each other along the second direction, and the stationary contact 320 is located above the moving contact 310. The moving contact 310 is disposed on the connecting assembly 200 and can move with the connecting assembly 200.

[0079] In this way, the magnetic circuit structure 100 can drive the connecting component 200 to move the moving contact 310 closer to or further away from the stationary contact 320 along the second direction, so that the moving contact 310 contacts or separates from the stationary contact 320, thereby closing or opening the relay 10. When the magnetic circuit structure 100 drives the connecting component 200 to move the moving contact 310 upward along the second direction, the moving contact 310 contacts the stationary contact 320, and the relay 10 closes to form a conductive path. When the magnetic circuit structure 100 drives the connecting component 200 to move the moving contact 310 downward along the second direction, the moving contact 310 separates from the stationary contact 320, and the relay 10 opens to form an open circuit.

[0080] In one embodiment, the relay 10 further includes a base plate 400 and a lead-out terminal 500. The stationary contact 320 is fixedly mounted on the base plate 400, and the lead-out terminal 500 is connected to the base plate 400 and electrically connected to the stationary contact 320. The lead-out terminal 500 can be connected to an external wire to connect the relay 10 to a circuit.

[0081] It is worth noting that the focus of this application is on the magnetic circuit structure 100. Other structures and working principles of the relay 10 are not the focus of this application and will not be described further below. The following describes the specific structure of the magnetic circuit structure 100 in some embodiments.

[0082] The magnetic circuit structure 100 of this application can protect the unsoldered leads 131 and flexible wires, preventing the unsoldered leads 131 on the lead terminals 121 from being exposed to the outside. During the handling, transportation and installation of the relay 10, the protective component 140 can prevent external parts from touching the unsoldered leads 131 and flexible wires, thereby protecting the unsoldered leads 131 and flexible wires from breakage, ensuring the performance of the magnetic circuit structure 100, and thus improving the reliability of the relay 10.

[0083] See Figures 1 to 7In the first embodiment of this application, the magnetic circuit structure 100 includes a yoke 110, a coil frame 120, a coil 130, and a protective member 140. The yoke 110 has openings 111 facing each other along a first direction. The coil frame 120 is disposed in the yoke 110 and has lead-out terminals 121 disposed near the openings 111. Enamelled wire is wound around the coil frame 120 to form a coil 130, and the end of the enamelled wire is a lead-out wire 131, which is wound and connected to the lead-out terminal 121. The protective member 140 is disposed in the yoke 110, located in the openings 111, and on the side of the lead-out terminal 121 opposite to the coil 130. The protective member 140 is used to protect the unsoldered lead-out wire 131 on the lead-out terminal 121. Figure 5 for Figure 1 The side view of the magnetic circuit structure 100 shown is shown. Figure 6 for Figure 1 The top view of the magnetic circuit structure 100 shown. Figure 7 for Figure 4 The magnetic circuit structure 100 shown is a cross-sectional view at AA.

[0084] The yoke 110 is the external structure of the magnetic circuit structure 100. The yoke 110 has openings 111 arranged opposite each other along a first direction. The coil frame 120 is the frame of the magnetic circuit structure 100. Some components of the magnetic circuit structure 100 are supported and installed by the coil frame 120. The coil frame 120 extends along a second direction and is disposed in the yoke 110. Enamelled wire is wound around the coil frame 120 to form a coil 130. In this way, the coil 130 can be exposed through the opening 111 of the yoke 110.

[0085] When coil 130 is energized, it generates a magnetic field. This magnetic field, reduced by yoke 110, produces an attractive force that drives the magnetic circuit structure 100 to connect the connecting assembly 200, causing the moving contact 310 to separate from the stationary contact 320. When a reverse voltage is applied to the ends of coil 130, it generates a reverse voltage, resetting the magnetic circuit structure 100. The magnetic circuit structure 100 then drives the connecting assembly 200 to contact the moving contact 310 with the stationary contact 320.

[0086] The end of the enameled wire is a lead wire 131. After the enameled wire is wound and installed on the coil frame 120 to form a coil 130 (hereinafter referred to as coil 130), the lead wire 131 extends out relative to the wound coil 130 so that the coil 130 can be connected to an external power source.

[0087] The coil frame 120 has lead terminals 121, and lead wires 131 can be wound around the lead terminals 121, which support and fix the lead wires 131. In this way, during the assembly of the relay 10, the lead terminals 121 can be connected to external connection components, so that the coil 130 can be electrically connected to the external connection components through the lead wires 131, which meets the needs of customer plug-in, PCB board soldering, etc.

[0088] Furthermore, the lead-out terminal 121 is located on the side of the coil 130 and is positioned near the opening 111. That is, the lead-out terminal 121 is located on the side of the coil 130 in the first direction and can be exposed through the opening 111. The lead wire 131 is wound around the lead-out terminal 121 and can also be exposed through the opening 111 to facilitate electrical connection between the lead wire 131 and external connection components.

[0089] Normally, the enameled wire is not fully soldered, and the yoke 110 protects the enameled wire and the lead wire 131. The lead wire 131 on the lead terminal 121 is not fully soldered; that is, part of the lead wire 131 wound on the lead terminal 121 is soldered, and part is not. This relay is used in new energy vehicles, where vibration conditions are relatively harsh. If all the lead wires 131 were soldered, under vibration conditions, the lead wires 131 would not have free loops, and the lead wires 131 would break due to strong vibration. Therefore, the lead terminal 121 needs to have unsoldered lead wires 131.

[0090] Furthermore, the solder lead 131 can be connected to the lead terminal 121. After the solder lead 131 is soldered to the lead terminal 121, it is equivalent to the lead 131 and the lead terminal 121 being an integral structure. Even if the lead 131 is crushed, it will not break, thus improving the reliability of the connection between the lead 131 and the lead terminal 121.

[0091] Understandably, the soldered lead wire 131 on the lead terminal 121 has higher structural strength, while the unsoldered lead wire 131 has lower structural strength. After the lead wire 131 is wrapped around the lead terminal 121, it is exposed at the opening 111. During transportation, handling, and installation, the relay 10 may come into contact with the unsoldered lead wire 131, causing the unsoldered lead wire 131 to break and resulting in a malfunction of the relay 10.

[0092] Therefore, the magnetic circuit structure 100 of this application also includes a protective member 140. The protective member 140 is disposed on the yoke 110 and located in the opening 111. The protective member 140 is also located on the side of the lead terminal 121 away from the coil 130. In this way, the protective member 140 can protect the unsoldered lead wire 131 on the lead terminal 121 and prevent external parts from touching the lead wire 131.

[0093] It is worth noting that the lead-out terminal 121 has both soldered and unsoldered leads 131. The protective component 140 of this application can protect the unsoldered leads 131 on the lead-out terminal 121. The following description only focuses on protecting the unsoldered leads 131. The soldered leads 131 are not the focus of this application and will not be described in detail below.

[0094] Thus, the protective component 140 is positioned behind the yoke 110, extending into the opening 111 to protect the unsoldered leads 131 on the lead-out terminal 121, thereby protecting the unsoldered leads 131. In this way, during the transport and installation of the relay 10, the protective component 140 can protect the unsoldered leads 131 from the outside. When external components come into contact with the unsoldered leads 131, the protective component 140 prevents them from touching the unsoldered leads 131, thus avoiding breakage of the unsoldered leads 131.

[0095] In the magnetic circuit structure 100 of the above embodiment, the protective member 140 can protect the unsoldered lead wire 131 on the lead terminal 121 at the opening 111, preventing the unsoldered lead wire 131 on the lead terminal 121 from being exposed to the outside. When the relay 10 is being transported and installed, since the protective member 140 is located outside the lead terminal 121 and the lead wire 131, it can prevent external parts from touching the unsoldered lead wire 131, thus protecting the unsoldered lead wire 131 and preventing the unsoldered lead wire 131 from breaking, ensuring the performance of the magnetic circuit structure 100, and thereby improving the reliability of the relay 10.

[0096] See Figures 8 to 12 In the second embodiment of this application, the magnetic circuit structure 100 includes a yoke 110, a coil frame 120, a coil 130, and a protective member 140. The yoke 110 has openings 111 facing each other along a first direction. The coil frame 120 is disposed in the yoke 110 and has electrically connected lead-out terminals 121 and conductive terminals 124. Both lead-out terminals 121 and conductive terminals 124 are disposed near the openings 111 and located on both sides of the coil 130. Enamelled wire is wound around the coil frame 120 to form the coil 130. The end of the enamelled wire is a lead-out wire 131, and the lead-out wire 131 at one end of the enamelled wire is wound and connected to the lead-out terminal 121. One end of a flexible connector is installed on the conductive terminal 124, and the other end of the flexible connector is used for connecting external wires.

[0097] The protective element 140 is disposed on the yoke 110 and is located in the opening 111. The protective element 140 is used to protect the unsoldered lead wire 131 on the lead terminal 121 and to protect the flexible wire on the conductive terminal 124. Figure 9 for Figure 8 The front view of the magnetic circuit structure 100 shown is shown. Figure 10 for Figure 8 The side view of the magnetic circuit structure 100 shown is shown. Figure 11 for Figure 8 The top view of the magnetic circuit structure 100 shown. Figure 12 for Figure 9 The magnetic circuit structure 100 shown is a cross-sectional view at BB.

[0098] The yoke 110 is the external structure of the magnetic circuit structure 100. The yoke 110 has openings 111 arranged opposite each other along a first direction. The coil frame 120 is the frame of the magnetic circuit structure 100. Some components of the magnetic circuit structure 100 are supported and installed by the coil frame 120. The coil frame 120 extends along a second direction and is disposed in the yoke 110. Enamelled wire is wound around the coil frame 120 to form a coil 130. In this way, the coil 130 can be exposed through the opening 111 of the yoke 110.

[0099] When coil 130 is energized, it generates a magnetic field. This magnetic field, reduced by yoke 110, produces an attractive force that drives the magnetic circuit structure 100 to connect the connecting assembly 200, causing the moving contact 310 to separate from the stationary contact 320. When a reverse voltage is applied to the ends of coil 130, it generates a reverse voltage, resetting the magnetic circuit structure 100. The magnetic circuit structure 100 then drives the connecting assembly 200 to contact the moving contact 310 with the stationary contact 320.

[0100] The end of the enameled wire is a lead wire 131. After the enameled wire is wound and installed on the coil frame 120 to form a coil 130 (hereinafter referred to as coil 130), the lead wire 131 extends out relative to the wound coil 130 so that the coil 130 can be connected to an external power source.

[0101] The coil frame 120 has electrically connected lead-out terminals 121 and conductive terminals 124, which are located on both sides of the coil. A lead-out wire 131 at one end of the enameled wire can be wound around the lead-out terminal 121, which supports and fixes the lead-out wire 131. Thus, during assembly, the lead-out terminal 121 can be connected to external connection components, allowing the coil 130 to be electrically connected to these components via the lead-out wire 131, meeting the requirements for client-side plug-in and PCB board soldering.

[0102] Simultaneously, the conductive terminal 124 is connected to the flexible connector, which supports the flexible connector to fix its position and state. The flexible connector is the component that connects the coil 130 to an external power source. One end of the flexible connector is electrically connected to the conductive terminal 124. After the conductive terminal 124 is electrically connected to the lead-out terminal 121, the flexible connector is electrically connected to the lead-out wire 131, thereby achieving the electrical connection between the flexible connector and the coil 130. The other end of the flexible connector can be connected to a wire, which is then connected to a power source to energize the coil 130.

[0103] Furthermore, the lead-out terminal 121 and the conductive terminal 124 are respectively located on the side of the coil 130 and are positioned near the opening 111. That is, the lead-out terminal 121 is located on one side of the coil 130 in the first direction and can be exposed through the opening 111, while the conductive terminal 124 is located on the other side of the coil 130 in the first direction. The lead wire 131 is wound around the lead-out terminal 121 and can also be exposed through the opening 111 to facilitate electrical connection between the lead wire 131 and external connection components. The flexible wire is wound around the conductive terminal 124 and can also be exposed through the opening 111 to facilitate connection of the flexible wire to a power source.

[0104] Normally, the enameled wire is not fully soldered, and the yoke 110 protects the enameled wire and the lead wire 131. The lead wire 131 on the lead terminal 121 is not fully soldered; that is, part of the lead wire 131 wound on the lead terminal 121 is soldered, and part is not. This relay is used in new energy vehicles, where vibration conditions are relatively harsh. If all the lead wires 131 were soldered, under vibration conditions, the lead wires 131 would not have free loops, and the lead wires 131 would break due to strong vibration. Therefore, the lead terminal 121 needs to have unsoldered lead wires 131.

[0105] Furthermore, the solder lead 131 can be connected to the lead terminal 121. After the solder lead 131 is soldered to the lead terminal 121, it is equivalent to the lead 131 and the lead terminal 121 being a single structure. Even if the lead 131 is crushed, it will not break, thus improving the reliability of the connection between the lead 131 and the lead terminal 121. The flexible connector can be connected to the conductive terminal 124 by soldering, laser welding, or crimping.

[0106] The magnetic circuit structure 100 of this application also includes a protective member 140, which is disposed on the yoke 110 and located in the opening 111. In this way, the protective member 140 can protect the unsoldered lead wire 131 on the lead terminal 121 to prevent external parts from touching the lead wire 131. At the same time, the protective member can also protect the flexible wire on the conductive terminal 124 to prevent external parts from touching the flexible wire.

[0107] It is worth noting that the lead-out terminal 121 has soldered lead-out wires 131 as well as unsoldered lead-out wires 131. The protective component 140 of this application can protect the unsoldered lead-out wires 131 on the lead-out terminal 121 and the flexible wires on the conductive terminal 124. The following description only describes the protection of the unsoldered lead-out wires 131 and the flexible wires. The soldered lead-out wires 131 are not the focus of this application and will not be described in the following text.

[0108] The protective components 140 are located in the openings 111 on the front and rear sides of the yoke 110, respectively. The protective components 140 can protect the flexible wires on the conductive terminal 124 and the unsoldered leads 131 on the lead-out terminal 121, respectively, so as to prevent the relay 10 from touching the unsoldered leads 131 during turnover, transportation and installation.

[0109] Thus, the protective component 140 is positioned behind the yoke 110, extending into the opening 111 to protect the unsoldered leads 131 on the lead-out terminal 121 and the flexible wires on the conductive terminal 124, thereby protecting the unsoldered leads 131 and flexible wires. During transport and installation of the relay 10, the protective component 140 provides external protection for the unsoldered leads 131 and flexible wires. When external components come into contact with the unsoldered leads 131 and flexible wires, the protective component 140 prevents them from breaking, thus avoiding damage to the unsoldered leads 131 and flexible wires.

[0110] In the magnetic circuit structure 100 of the above embodiment, the protective member 140 can protect the unsoldered lead wire 131 on the lead terminal 121 and the flexible wire on the conductive terminal 124 at the opening 111, preventing the unsoldered lead wire 131 on the lead terminal 121 and the flexible wire on the conductive terminal 124 from being exposed to the outside. When the relay 10 is being transported and installed, it can prevent external parts from touching the unsoldered lead wire 131 and the flexible wire, thus protecting the unsoldered lead wire 131 and the flexible wire from breaking, ensuring the performance of the magnetic circuit structure 100, and thereby improving the reliability of the relay 10.

[0111] See Figures 1 to 13 In one embodiment, the protective member 140 is capable of at least shielding the unsoldered leads 131 on the lead-out terminal 121. That is, the protective member 140 partially shields the leads 131 on the lead-out terminal 121, only needing to shield the unsoldered leads 131. In this way, the unsoldered leads 131 are prevented from being exposed at the opening 111, thus providing shielding and protection for the unsoldered leads 131.

[0112] In this way, during the turnover, transportation and installation of the relay 10, the protective component 140 can shield and protect the outside of the lead wire 131. When an external component touches the lead wire 131, it will touch the protective component 140 instead of the unsoldered lead wire 131 due to the obstruction of the protective component 140, thus avoiding the unsoldered lead wire 131 from breaking.

[0113] See Figures 8 to 12 In one embodiment, the protective member 140 is also located on the side of the conductive terminal 124 away from the coil 130, so as to at least shield the flexible wiring on the conductive terminal 124. That is, in addition to being located in the opening on the front side of the yoke 110, the protective member 140 is also located in the opening 111 on the rear side of the yoke 110, so as to shield the flexible wiring on the conductive terminal 124, thereby providing protection for the flexible wiring on the conductive terminal 124.

[0114] It is worth noting that in the first embodiment, the protective member 140 only protects the unsoldered lead wire 131 on the lead terminal 121. In the second embodiment, the protective member 140 protects not only the unsoldered lead wire 131 on the lead terminal 121, but also the flexible wire on the conductive terminal 124. In fact, the structure and principle of the protective member 140 protecting the unsoldered lead wire 131 on the lead terminal 121 in the first embodiment are exactly the same as those in the second embodiment. Furthermore, in the second embodiment, the structure and principle of the protective member 140 protecting the unsoldered lead wire 131 on the lead terminal 121 are substantially the same as those protecting the flexible wire on the conductive terminal 124. The lead terminal 121 and the conductive terminal 124 are also substantially the same. The following description will only focus on the structure and principle of the protective member 140 protecting the unsoldered lead wire 131 on the lead terminal 121.

[0115] See Figures 1 to 13 In one embodiment, the lead-out terminal 121 extends along a second direction. This facilitates the winding of the lead-out terminal 121 around the lead wire. Of course, in other embodiments of this application, the lead-out terminal 121 may also be inclined. In one embodiment, the lead-out terminal 121 has a cylindrical structure. Of course, in other embodiments of this application, the lead-out terminal 121 may also have other structural forms capable of winding the lead wire 131.

[0116] See Figures 1 to 3 , Figure 8 , Figure 13In one embodiment, the magnetic circuit structure 100 further includes a moving iron core 150 and a stationary iron core 160. The coil frame 120 has a mounting hole extending along a second direction. The stationary iron core 160 is disposed in the mounting hole, and the moving iron core 150 is movably mounted in the mounting hole, partially exposing the coil frame 120. The moving iron core 150 can be attracted to or separated from the stationary iron core 160. The moving iron core 150 and the stationary iron core 160 are the moving components of the magnetic circuit structure 100.

[0117] The moving iron core 150 and the stationary iron core 160 are disposed in the coil frame 120. The coil frame 120 has mounting holes that extend through the coil frame 120 along a second direction. The stationary iron core 160 is fixedly mounted in the mounting holes of the coil frame 120, and the moving iron core 150 is partially mounted in the mounting holes of the coil frame 120. The stationary iron core 160 and the moving iron core 150 are disposed opposite each other along the second direction, and the moving iron core 150 is located above the stationary iron core 160.

[0118] The moving iron core 150 passes through and extends out of the mounting hole in the coil frame 120. Thus, the moving iron core 150 is partially located within the mounting hole of the coil frame 120 and partially located outside the coil frame 120. The end of the moving iron core 150 located outside the coil frame 120 is connected to the connecting assembly 200. Furthermore, the moving iron core 150 is movably mounted in the mounting hole and can move along a second direction within the mounting hole to move closer to or further away from the stationary iron core 160.

[0119] When the moving iron core 150 approaches the stationary iron core 160 along the second direction, the moving iron core 150 descends along the second direction in the mounting hole. When the moving iron core 150 contacts the stationary iron core 160, the moving iron core 150 and the stationary iron core 160 are attracted together. Moreover, when the moving iron core 150 descends, it can drive the connecting assembly 200 to separate the moving contact 310 from the stationary contact 320, thereby realizing the disconnection control of the relay 10.

[0120] As the moving iron core 150 moves away from the stationary iron core 160 along the second direction, the moving iron core 150 rises in the mounting hole along the second direction, and the moving iron core 150 and the stationary iron core 160 gradually move away from each other until they are completely separated. Moreover, when the moving iron core 150 rises, it can drive the connecting assembly 200 to make the moving contact 310 contact with the stationary contact 320, thereby realizing the closing control of the relay 10.

[0121] In its initial state, the moving iron core 150 of relay 10 is separated from the stationary iron core 160, and the moving contact 310 and the stationary contact 320 are in a closed state. The initial position of the moving iron core 150 is that it is separated from the stationary iron core 160, meaning that relay 10 remains closed. When it is necessary to control relay 10 to open, the moving iron core 150 moves towards the stationary iron core 160 under the magnetic force of the magnetic field, moving to the engaging position, causing the moving iron core 150 and the stationary iron core 160 to engage, thereby controlling the moving contact 310 to open from the stationary contact 320, thus achieving the disconnection control of relay 10.

[0122] Furthermore, when coil 130 is energized, it generates a magnetic field that produces a certain attractive force, controlling the moving iron core 150 to descend along the second direction, thereby attracting the moving iron core 150 to the stationary iron core 160. When a reverse voltage is applied to both ends of coil 130, it generates a reverse magnetic field, causing the moving iron core 150 to rise along the second direction under the influence of this reverse voltage, thus separating the moving iron core 150 from the stationary iron core 160.

[0123] See Figures 1 to 3 In one embodiment, the coil frame 120 includes a mounting base 122, a top plate 123, and a winding post. The winding post extends along a second direction. The mounting base 122 and the top plate 123 are disposed at both ends of the winding post. Enamelled wire is wound and connected to the winding post to form a coil 130. One end of the lead-out terminal 121 and the conductive terminal 124 are disposed in the mounting base 122 and electrically connected in the mounting base 122. The lead-out terminal 121 and the conductive terminal 124 are arranged at intervals from the winding post.

[0124] The winding post is the main component of the coil holder 120 for winding the coil 130. The winding post extends along the second direction. The mounting base 122 and the top plate 123 are located at both ends of the winding post and protrude radially from the outer surface of the winding post. The mounting base 122 and the top plate 123 can limit the axial position of the coil 130 on the winding post. At the same time, the mounting base 122 can also support the installation so that the coil holder 120 can be installed into the yoke 110 (mentioned later) of the magnetic circuit structure 100.

[0125] One end of the lead-out terminal 121 and the conductive terminal 124 is disposed in the mounting base 122. Thus, one end of the lead-out terminal 121 and the conductive terminal 124 is embedded in the mounting base 122 and can be electrically connected within the mounting base 122, eliminating the need to electrically connect the lead wire 131 to the conductive terminal 124. Furthermore, the lead-out terminal 121 and the conductive terminal 124 are arranged approximately at a distance from the winding post in the first direction, meaning there is a certain gap between the lead-out terminal 121 and the conductive terminal 124 and the winding post. Thus, after the coil 130 is disposed behind the winding post, the lead wire 131 at the end of the enameled wire can be wound and connected to the lead-out terminal 121. The lead-out terminal 121 supports the lead wire 131 on the outside of the coil 130.

[0126] See Figures 1 to 3 In one embodiment, the winding post, mounting base 122, and top plate 123 are integrated into a single structure. This ensures the structural strength of the coil frame 120 and simplifies the assembly process, improving production efficiency. Of course, in other embodiments of this application, the winding post, mounting base 122, and top plate 123 can also be separate components, reliably connected via threaded connections or other means.

[0127] See Figures 1 to 3 In one embodiment, the lead-out terminal 121 and the conductive terminal 124 are an integral structure. That is, the lead-out terminal 121 and the conductive terminal 124 are integrally embedded in the bottom of the coil frame 120, realizing the electrical connection between the lead-out terminal 121 and the conductive terminal 124. Of course, in other embodiments of this application, the lead-out terminal 121 and the conductive terminal 124 can also be separately arranged, with one end of the lead-out terminal 121 and the conductive terminal 124 electrically connected to the bottom of the coil frame 120 through conductive components such as wires.

[0128] See Figures 1 to 13 In one embodiment, the protective member 140 includes a support portion 141 and a protective portion 142. One end of the support portion 141 is connected to the yoke 110, and the other end is connected to the protective portion 142. The protective portion 142 is located on the side of the lead-out terminal 121 away from the coil 130, so as to at least block the unsoldered lead wires 131 on the lead-out terminal 121.

[0129] The support portion 141 provides support, while the protective portion 142 protects the lead wire 131. The support portion 141 supports and mounts the protective portion 142 to the yoke 110. One end of the support portion 141 is connected to the yoke 110, and the other end is connected to the protective portion 142, allowing the protective portion 142 to be positioned outside the lead terminal 121 and to shield the unsoldered lead wire 131 on the lead terminal 121, thus protecting the unsoldered lead wire 131. Figures 8 to 12As shown, the protective part 142 is also located on the side of the conductive terminal 124 away from the coil 130.

[0130] In one embodiment, the support portion 141 is bent. That is, the support portion 141 bends to connect the yoke 110 and the protective portion 142, so that the protective portion 142 can shield the lead wire 131 from the outside of the lead terminal 121. Of course, in the embodiments of this application, the support portion 141 may also be plate-shaped, etc.

[0131] See Figures 1 to 13 In one embodiment, the dimensions of the protective portion 142 are adapted to the height and width dimensions of the unsoldered lead wire 131 wound around the lead terminal 121. It is understood that the dimensions of the protective portion 142 are not limited in principle, as long as the protective portion 142 can effectively shield the unsoldered lead wire 131 on the lead terminal 121. In this way, the protective portion 142 can effectively shield the unsoldered lead wire 131 on the lead terminal 121.

[0132] In this embodiment, when the lead-out terminal 121 extends along the second direction, the size of the protective portion 142 is less than or equal to the height and width dimensions of the lead wire 131 wound around the lead-out terminal 121. In this way, the protective portion 142 can shield the unsoldered lead wire 131 on the lead-out terminal 121, thus protecting the unsoldered lead wire 131. Simultaneously, it can reduce the volume of the protective portion 142 and the overall weight of the magnetic circuit structure 100. Of course, in other embodiments of this application, the size of the protective portion 142 along the second direction may also be slightly larger than the height and width dimensions of the lead wire 131 wound around the lead-out terminal 121.

[0133] Of course, in other embodiments of this application, when the lead-out terminal 121 is tilted, the dimensions of the protective portion 142 are adapted to the height and width dimensions of the unsoldered lead wire 131 wound around the lead-out terminal 121. Similarly, the dimensions of the protective portion 142 are adapted to the height and width dimensions of the unsoldered lead wire 131 wound around the conductive terminal 124.

[0134] See Figures 1 to 13 In one embodiment, the protective member 140 and the yoke 110 are integrally formed. That is, the protective member 140 and the yoke 110 are integrally formed. During forming, a protrusion is integrally formed on the side of the yoke 110, and then the protrusion is bent to form the protective member 140, so that the protective member 140 is located in the opening 111 and blocks the lead wire 131 on the lead terminal 121.

[0135] Of course, in other embodiments of this application, the protective member 140 and the yoke 110 can also be separately provided and reliably connected by means of snap-fit ​​or other methods. It is understood that the yoke 110 has a snap-fit ​​part on its side, and the support part 141 of the protective member 140 can be snap-fitted into the snap-fit ​​part to fix the protective member 140 to the yoke 110.

[0136] See Figures 1 to 13 In one embodiment, the protective member 140 and the yoke 110 are made of the same material. That is, the protective member 140 can be made of the same material as the yoke 110 to facilitate the integral molding of the protective member 140 and the yoke 110.

[0137] See Figures 1 to 13 In one embodiment, the protective member 140 is plate-shaped. That is, the protective member 140 has an overall plate-shaped structure to shield the unsoldered lead wire 131 on the lead terminal 121, so that the protective member 140 protects the lead wire 131.

[0138] See Figures 1 to 13 In one embodiment, the yoke 110 includes a support base plate 112 and two support side plates 113. The two support side plates 113 are disposed opposite to each other on both sides of the support base plate 112 along a third direction and together with the support base plate 112 form an installation space. The coil frame 120 is located in the installation space.

[0139] The support substrate 112 is the bottom structure of the yoke 110. The support side plate 113 extends along the second direction. The two support side plates 113 are arranged opposite each other along the third direction on both sides of the support substrate 112. The support substrate 112 and the two support side plates 113 generally form a U-shaped structure. The support substrate 112 and the two support side plates 113 enclose an installation space. The coil frame 120 is installed on the support substrate 112 and located in the installation space to protect the coil 130.

[0140] Two supporting side plates 113 are configured to form an opening 111 in the first direction, and the yoke 110 has openings 111 in the front-rear direction. After the coil frame 120 and the coil 130 are located in the mounting space, the coil frame 120 and the coil 130 can be exposed through the opening 111, and the lead terminal 121 and its lead wire 131 are also exposed through the opening 111. In this way, the protective member 140 can protect the unsoldered lead wire 131 on the lead terminal 121 at the opening 111, preventing the unsoldered lead wire 131 from breaking.

[0141] See Figures 1 to 13In one embodiment, the magnetic circuit structure 100 further includes a mounting plate 170, which is disposed on the yoke 110 and covers the coil frame 120. The mounting plate 170 is disposed on the top of the yoke 110 and connected to the support side plates 113 on both sides of the yoke 110. The mounting plate 170 supports the components above the magnetic circuit structure 100.

[0142] See Figures 1 to 7 In the first embodiment of this application, a protective member 140 is disposed on the support side plate 113. That is, a protective member 140 is disposed on the support side plate 113, and the protective member 140 is disposed corresponding to the unsoldered lead wire 131 on the lead-out terminal 121. Optionally, the protective member 140 extends in a third direction to cover the unsoldered lead wire 131 on the lead-out terminal 121.

[0143] In this way, the protective component 140 can shield the unsoldered leads 131 on the lead-out terminal 121, preventing the unsoldered leads 131 from being exposed through the opening 111, thus protecting the unsoldered leads 131. During the handling, transportation, and installation of the relay 10, the protective component 140 can prevent damage to the unsoldered leads 131, avoiding breakage of the unsoldered leads 131, thereby ensuring the performance of the relay 10.

[0144] See Figures 8 to 12 In the second embodiment of this application, a protective member 140 is disposed on the support side plate 113. The protective member 140 is disposed corresponding to the unsoldered lead wire 131 on the lead-out terminal 121, and the protective member 140 is also disposed corresponding to the flexible wire on the conductive terminal 124. Optionally, the protective member 140 extends in a third direction to block the unsoldered lead wire 131 on the lead-out terminal 121 and to block the flexible wire on the conductive terminal 124.

[0145] In this way, the protective component 140 can shield the unsoldered leads 131 on the lead-out terminal 121 and the flexible wires on the conductive terminal 124, preventing the unsoldered leads 131 and flexible wires from being exposed through the opening 111, thus protecting the unsoldered leads 131 and flexible wires. During the handling, transportation, and installation of the relay 10, the protective component 140 can prevent damage to the unsoldered leads 131 and flexible wires, avoiding breakage of the unsoldered leads 131 and flexible wires, thereby ensuring the performance of the relay 10.

[0146] See Figures 13 to 17 In the third embodiment of this application, the protective member 140 is disposed on the support substrate 112. Figure 14 for Figure 13 The front view of the magnetic circuit structure 100 shown is shown. Figure 15 for Figure 13 The side view of the magnetic circuit structure 100 shown is shown. Figure 16for Figure 13 The top view of the magnetic circuit structure 100 shown. Figure 17 for Figure 14 The magnetic circuit structure 100 shown is a cross-sectional view at CC.

[0147] In this embodiment, the protective member 140 is disposed on the support substrate 112, and the protective member 140 is disposed corresponding to the unsoldered lead wire 131 on the lead terminal 121. Optionally, the protective member 140 extends along the second direction to block the unsoldered lead wire 131 on the lead terminal 121. It is worth noting that the specific structure of the magnetic circuit structure 100 in the third embodiment is substantially the same as that in the first embodiment, except that the placement position of the protective member 140 is different. The magnetic circuit structure 100 will not be described here.

[0148] In this way, the protective component 140 can extend to the location of the lead-out terminal 121 to shield the unsoldered lead-out wire 131 on the lead-out terminal 121, preventing the unsoldered lead-out wire 131 from being exposed through the opening 111, thus protecting the unsoldered lead-out wire 131. During the handling, transportation, and installation of the relay 10, the protective component 140 can prevent damage to the unsoldered lead-out wire 131 and prevent the unsoldered lead-out wire 131 from breaking, thereby ensuring the performance of the relay 10.

[0149] See Figures 1 to 7 In one embodiment, the coil frame 120 has two lead terminals 121, which are spaced apart. Each lead terminal 121 is wound with a lead wire 131. The two lead terminals 121 are located near the same side opening 111 of the yoke 110 and are spaced apart. Each lead terminal 121 is wound with a lead wire 131 so that the two lead wires 131 are independent of each other and electrically connected to external connection components respectively.

[0150] In one embodiment, the two leads 121 are spaced apart along a third direction. Of course, in other embodiments of this application, the two leads 121 may also be staggered along a third direction, as long as the two leads 121 can be wound around the lead wire 131 respectively.

[0151] In one embodiment, the conductive terminal 124 and the lead-out terminal 121 are spaced apart along a first direction. That is, the lead-out terminal 121 is close to the opening 111 on the front side of the yoke 110, and the conductive terminal 124 is close to the opening 111 on the rear side of the yoke 110. Optionally, the conductive terminal 124 extends along the first direction to stably support the flexible wiring. Of course, in other embodiments of this application, the conductive terminal 124 may also be inclined.

[0152] In this embodiment, there are two conductive terminals 124 and two lead-out terminals 121. Each conductive terminal 124 is wound with a lead-out wire 131, and each lead-out terminal 121 is also wound with a lead-out wire 131. There are four protective members 140, which respectively protect the flexible wires on the conductive terminals 124 and the unsoldered lead-out wires 131 on the lead-out terminals 121. Of course, there can also be two protective members 140. One protective member 140 protects the unsoldered lead-out wires 131 on two lead-out terminals 121 at the same time, and the other protective member 140 protects the unsoldered lead-out wires 131 on two support terminals at the same time.

[0153] See Figures 1 to 7 In one embodiment, there are two protective members 140, each disposed on the yoke 110, and each shielding the unsoldered lead wire 131 on the corresponding lead terminal 121. That is, each lead terminal 121 and its lead wire 131 corresponds to one protective member 140, so that the protective member 140 can shield the unsoldered lead wire 131 on the corresponding lead terminal 121, thereby protecting the unsoldered lead wire 131.

[0154] Optionally, two protective components 140 are symmetrically arranged on the supporting side plate 113 of the yoke 110, such as... Figures 1 to 7 As shown. Optionally, two protective members 140 are symmetrically arranged on the support base plate 112 of the yoke 110, as shown. Figures 13 to 17 As shown. Of course, in other embodiments of this application, one of the protective members 140 may be disposed on the support base plate 112, and the other protective member 140 may be disposed on the support side plate 113.

[0155] Of course, in other embodiments of this application, the number of protective members 140 is one, at least one end of the protective member 140 is connected to the yoke 110, and at the same time blocks the unsoldered leads 131 on the lead-out terminals 121. That is to say, one protective member 140 can also be used to protect the unsoldered leads 131 on two lead-out terminals 121 at the same time.

[0156] The protective member 140 extends along a third direction and simultaneously shields two unsoldered leads 131 to protect them. Optionally, at least one end of the protective member 140 is connected to the support side plate 113, or the protective member 140 is disposed on the support substrate 112.

[0157] See Figures 8 to 12In one embodiment, there are four protective members 140. The four protective members 140 are respectively disposed on the yoke 110, with two protective members 140 located on the front side of the yoke 110 and two protective members 140 located on the rear side of the yoke 110. The two protective members 140 on the front side respectively block the unsoldered lead wires 131 on the corresponding lead-out terminals 121, and the two protective members 140 on the rear side respectively block the flexible wires on the corresponding conductive terminals 124.

[0158] In other words, each lead-out terminal 121 and its lead-out wire 131 corresponds to a protective element 140, and each conductive terminal 124 and its lead-out wire 131 corresponds to a protective element 140. In this way, the protective element 140 can block the unsoldered lead-out wire 131 on the corresponding lead-out terminal 121 to protect the unsoldered lead-out wire 131. The protective element 140 can also block the flexible wire on the corresponding conductive terminal 124 to protect the unsoldered lead-out wire 131 and the flexible wire.

[0159] Optionally, four protective components 140 are symmetrically arranged on the supporting side plate 113 of the yoke 110, such as... Figures 8 to 12 As shown. Optionally, four protective members 140 are symmetrically arranged on the support base plate 112 of the yoke 110. Of course, in other embodiments of this application, some of the protective members 140 are disposed on the support base plate 112, and the remaining protective members 140 are disposed on the support side plate 113.

[0160] Of course, in other embodiments of this application, there are two protective members 140. At least one end of each protective member 140 is connected to the yoke 110 and is respectively disposed on the front and rear sides of the yoke 110. The protective member 140 on the front side simultaneously blocks the unsoldered lead wires 131 on the lead-out terminal 121, and the protective member 140 on the rear side simultaneously blocks the flexible wires on the conductive terminal 124. That is, one protective member 140 can also be used to protect the unsoldered lead wires 131 on both lead-out terminals 121, and the same protective member 140 can also be used to protect the flexible wires on both conductive terminals 124.

[0161] The magnetic circuit structure 100 of this application includes a protective member 140 on the yoke 110. The protective member 140 shields the unsoldered leads 131 on the lead-out terminal 121 and the flexible wires on the conductive terminal 124 at the opening 111, preventing them from being exposed. During transport and installation, the protective member 140, located outside the lead-out terminal 121 and the unsoldered leads 131, as well as outside the flexible wires on the conductive terminal 124, prevents external components from contacting the unsoldered leads 131 and flexible wires. This protects the unsoldered leads 131 and flexible wires from breakage, ensuring the performance of the magnetic circuit structure 100 and improving the reliability of the relay 10.

[0162] Furthermore, the protective member 140 can be disposed on the support side plate 113 or support base plate 112 of the yoke 110, so that the protective member 140 can protect the unsoldered lead wire 131 on the lead terminal 121 in the second direction. Furthermore, the protective member 140 and the yoke 110 can be integrally formed, and the protective member 140 is formed by bending. Furthermore, there can be two protective members 140, each protecting the unsoldered lead wire 131 on the lead terminal 121. Of course, the protective member 140 can also only protect the unsoldered lead wire 131 on the lead terminal 121.

[0163] See Figures 1 to 3 This application also provides a relay 10, including a connection assembly 200, a contact assembly 300, and a magnetic circuit structure 100 as described in any of the above embodiments. The connection assembly 200 is disposed at one end of the moving iron core 150 extending out of the coil frame 120 in the magnetic circuit structure 100. The contact assembly 300 includes a moving contact 310 and a stationary contact 320. The moving contact 310 is disposed in the connection assembly 200, and the stationary contact 320 and the moving contact 310 are arranged opposite to each other along a second direction. The moving iron core 150 can drive the connection assembly 200 and the moving contact 310 to move along the second direction, so that the moving contact 310 contacts or separates from the stationary contact 320.

[0164] It is worth noting that the specific connection method between the connecting component 200 and the moving iron core 150 is not limited here. After adopting the magnetic circuit structure 100 of the above embodiment, the relay 10 of this application can shield the unsoldered leads 131 on the lead-out terminal 121, preventing them from being exposed to the outside. In this way, during transportation and installation, the relay 10 can prevent external components from touching the unsoldered leads 131, thus protecting them from breakage and ensuring the performance of the magnetic circuit structure 100, thereby improving the reliability of the relay 10.

[0165] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0166] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A magnetic circuit structure, characterized in that, include: A yoke having openings opposite each other along a first direction; A coil frame is disposed in the yoke, the coil frame having electrically connected lead-out terminals and conductive terminals, both of which are disposed close to the opening and located on both sides of the coil; Enamelled wire is wound around the coil frame to form a coil, and the end of the enamelled wire is a lead wire, which is wound and connected to the lead terminal; A flexible connector, one end of which is installed on the conductive terminal, and the other end of which is used to connect an external wire; as well as A protective element is disposed on the yoke, the protective element is located in the opening, the protective element is used to protect the unsoldered lead wire on the lead terminal, and to protect the flexible wire on the conductive terminal.

2. The magnetic circuit structure according to claim 1, characterized in that, The protective element is located on the side of the lead-out terminal away from the coil, so as to at least shield the unsoldered lead-out wires on the lead-out terminal; And / or, the protective element is located on the side of the conductive terminal away from the coil, so as to at least shield the flexible wiring on the conductive terminal.

3. The magnetic circuit structure according to claim 1, characterized in that, The protective component includes a support part and a protective part, one end of the support part is connected to the yoke, and the other end is connected to the protective part; The protective portion is located on the side of the lead-out terminal away from the coil, and / or the protective portion is located on the side of the conductive terminal away from the coil.

4. The magnetic circuit structure according to claim 3, characterized in that, The dimensions of the protective part are adapted to the height and width dimensions of the unsoldered lead wire wound around the lead terminal; And / or, the dimensions of the protective portion are adapted to the height and width dimensions of the unsoldered lead wire wound around the conductive terminal.

5. The magnetic circuit structure according to claim 1, characterized in that, The protective component and the yoke are an integral structure; And / or, the protective component is plate-shaped; And / or, the protective element is made of the same material as the yoke.

6. The magnetic circuit structure according to claim 1, characterized in that, The yoke includes a support base plate and two support side plates. The two support side plates are arranged opposite each other on both sides of the support base plate along a third direction and together with the support base plate, they form an installation space. The coil frame is located in the installation space.

7. The magnetic circuit structure according to claim 6, characterized in that, The protective component is disposed on the supporting side plate; Alternatively, the protective element may be disposed on the supporting substrate.

8. The magnetic circuit structure according to any one of claims 1 to 7, characterized in that, The coil frame has two leads, which are spaced apart. The two leads are respectively wound around and connected to the leads. Each protective member blocks the leads on the corresponding lead. Alternatively, at least one end of the protective member is connected to the yoke and blocks the leads on both leads at the same time. And / or, the coil frame has two conductive terminals, the two conductive terminals are spaced apart, the two conductive terminals are respectively wound and connected to the lead wire, each of the protective members blocks the flexible wire on the corresponding conductive terminal, or, at least one end of the protective member is connected to the yoke and simultaneously blocks the flexible wire on both conductive terminals.

9. The magnetic circuit structure according to any one of claims 1 to 7, characterized in that, The magnetic circuit structure also includes a moving iron core and a stationary iron core. The coil frame has a mounting hole that extends through the second direction. The stationary iron core is disposed in the mounting hole. The moving iron core is movably mounted in the mounting hole and partially exposed in the coil frame. The moving iron core can be attracted to or separated from the stationary iron core. And / or, the magnetic circuit structure further includes a mounting plate disposed on the yoke and covering the coil frame.

10. The magnetic circuit structure according to any one of claims 1 to 7, characterized in that, The coil frame includes a mounting base, a top plate, and a winding post. The winding post extends along a second direction. The mounting base and the top plate are disposed at both ends of the winding post. The enameled wire is wound and connected to the winding post to form the coil. One end of the lead-out terminal and one end of the conductive terminal are disposed in the mounting base and electrically connected in the mounting base. The lead-out terminal and the conductive terminal are arranged at intervals from the winding post.

11. The magnetic circuit structure according to claim 10, characterized in that, The lead-out terminal and the conductive terminal are an integral structure, or the lead-out terminal and the conductive terminal are separate structures.

12. A magnetic circuit structure, characterized in that, include: A yoke having openings opposite each other along a first direction; A coil frame is disposed in the yoke, the coil frame having extended lead-out terminals disposed near the opening; Enamelled wire is wound around the coil frame to form a coil, and the end of the enamelled wire is a lead wire, which is wound and connected to the lead terminal; as well as A protective element is disposed on the yoke, the protective element is located in the opening and on the side of the lead-out terminal away from the coil, the protective element is used to protect the lead-out wire that is not soldered on the lead-out terminal.

13. A relay, characterized in that, Includes a connection component, a contact component, and a magnetic circuit structure as described in any one of claims 1 to 12; The connecting component is disposed at one end of the moving iron core extending from the coil frame in the magnetic circuit structure. The contact component includes a moving contact and a stationary contact. The moving contact is disposed in the connecting component. The stationary contact and the moving contact are arranged opposite to each other along the second direction. The moving iron core can drive the connecting component and the moving contact to move along the second direction, so that the moving contact can contact or separate from the stationary contact.

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