The yoke clip of the high-voltage DC relay and the high-voltage DC relay

Abstract

This application relates to a yoke clamp for a high-voltage DC relay and the high-voltage DC relay itself. The yoke clamp includes a yoke clamp body and an assembly. The yoke clamp body surrounds a portion of the outer periphery of the insulating cover of the high-voltage DC relay. The assembly includes a hook-on part and an anti-detachment part. The hook-on part is connected to the yoke clamp body and can be hooked against the top surface of the insulating cover. The anti-detachment part is located on the hook-on part and can be engaged with the top surface of the insulating cover. After the yoke clamp is hooked against the insulating cover by the hook-on part of the assembly, the engagement of the anti-detachment part with the insulating cover further enhances the secure mounting of the yoke clamp on the insulating cover. This prevents the yoke clamp from shaking and detaching from the insulating cover when the high-voltage DC relay is displaced, thus ensuring the arc-extinguishing effect of the high-voltage DC relay. Therefore, by adding an anti-detachment part to the assembly, this application effectively prevents the yoke clamp from detaching from the insulating cover, ensuring the normal use of the product.

Description

Technical Field

[0001] This application relates to the field of relay technology, and in particular to a yoke clip for a high-voltage DC relay and the high-voltage DC relay itself. Background Technology

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

[0003] A high-voltage DC relay is a type of relay. Existing high-voltage DC relays include an insulating cover, a pair of stationary contacts, and a moving contact. The pair of stationary contacts are respectively disposed on the top of the insulating cover, and the moving contact is located inside the insulating cover, with both ends of the moving contact corresponding to the bottom of the pair of stationary contacts along its length.

[0004] Furthermore, to improve the arc-extinguishing effect, existing high-voltage DC relays typically include an arc-extinguishing component on the outer periphery of the insulating cover. This component may include a yoke clamp and a permanent magnet. The yoke clamp surrounds the outer periphery of the insulating cover, and the permanent magnet is located on the surface of the yoke clamp facing the insulating cover. However, after assembly, due to the influence of the fitting clearance, the yoke clamp may wobble during product displacement, leading to an increase in the fitting clearance or even loosening. Utility Model Content

[0005] Therefore, it is necessary to provide a yoke clip for a high-voltage DC relay and a high-voltage DC relay to address the aforementioned technical problems.

[0006] A yoke clip for a high-voltage DC relay, comprising:

[0007] The yoke clamp body surrounds a portion of the outer periphery of the insulating cover of the high-voltage DC relay; and

[0008] The assembly includes a hook-on part and an anti-detachment part. The hook-on part is connected to the main body of the yoke clamp and can be hooked onto the top surface of the insulating cover. The anti-detachment part is provided on the hook-on part and can be connected to the top surface of the insulating cover.

[0009] In one embodiment, the anti-detachment part is an anti-detachment protrusion or an anti-detachment groove.

[0010] In one embodiment, the yoke clamp body includes a first side plate, a second side plate, and a third side plate, the first side plate and the second side plate being disposed opposite to each other, and the third side plate being connected between the first side plate and the third side plate; the fitting is disposed on the third side plate.

[0011] In one embodiment, the top surface of the third side plate has a first face, a second face, and a third portion arranged sequentially along the direction from the first side plate to the second side plate, the second face being directly opposite the stationary contact of the high voltage DC relay, and the fitting being disposed on the first face or the third face.

[0012] In one embodiment, at least one first reinforcing part is provided between the first side plate and the third side plate; and / or, at least one second reinforcing part is provided between the second side plate and the third side plate.

[0013] In one embodiment, the yoke clamp also has at least one of the following features:

[0014] The surface of the yoke clamp body facing the insulating cover is provided with multiple limiting parts, and the multiple limiting parts surround the permanent magnet mounting cavity;

[0015] The top surface of the yoke clamp body is provided with a plug-in part, which can be connected to the housing of the high voltage DC relay.

[0016] The top surface of the yoke clamp body is provided with abutment, which can be connected to the frame of the high voltage DC relay.

[0017] The yoke clamp body and the assembly are an integral structure.

[0018] A high-voltage DC relay includes a yoke clamp as described in any of the preceding claims.

[0019] In one embodiment, the high-voltage DC relay further includes an insulating cover, the yoke clamp body of the yoke clamp surrounds a portion of the outer periphery of the insulating cover, and the mounting fitting of the yoke clamp rests on the top surface of the insulating cover.

[0020] In one embodiment, the top surface of the insulating cover is provided with a mounting groove for inserting the hook part of the assembly, and the bottom of the mounting groove is provided with a limiting groove or limiting protrusion that cooperates with the anti-detachment part of the assembly.

[0021] In one embodiment, there are two yoke clamps, which are arranged around both sides of the insulating cover along the length of the insulating cover.

[0022] In one embodiment, the fittings of the two yoke clamps are aligned along the length of the insulating cover.

[0023] In one embodiment, the high-voltage DC relay further includes two stationary contacts, which are spaced apart at both ends of the insulating cover along the length of the insulating cover.

[0024] In one embodiment, the insulating cover is a ceramic cover.

[0025] The yoke clip of the aforementioned high-voltage DC relay and the high-voltage DC relay have the following beneficial effects:

[0026] (1) After the mounting part of the assembly is attached to the insulating cover, the anti-detachment part of the assembly can be used to further improve the assembly firmness of the yoke clamp on the insulating cover. This can prevent the yoke clamp from shaking and falling off the insulating cover when the high-voltage DC relay is displaced, thus ensuring the arc extinguishing effect of the high-voltage DC relay. It can be seen that, compared with the existing yoke clamp, this application can effectively prevent the yoke clamp from falling off the insulating cover by adding an anti-detachment part to the assembly, thus ensuring the normal use of the product.

[0027] (2) By setting the fittings on the middle side plate (i.e. the third side plate) of the yoke clamp in the “U” structure, the number of fittings can be reduced to a minimum while ensuring that the yoke clamp does not fall off the insulating cover, which can greatly reduce the processing difficulty of the yoke clamp.

[0028] (3) By attaching the assembly to the corner area of ​​the top surface of the insulating cover, the space occupied by the assembly can be reduced, and the corner area of ​​the top surface of the insulating cover can be utilized, which is conducive to the miniaturization of the high voltage DC relay. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the yoke clamp of a high-voltage DC relay provided in an embodiment of this application.

[0030] Figure 2 This is a schematic diagram of the structure of the yoke clamp, insulating cover, stationary contact and frame of a high-voltage DC relay provided in an embodiment of this application.

[0031] Figure 3 for Figure 2 The provided high-voltage DC relay includes a cross-sectional view of the yoke clamp, insulating cover, stationary contact, and frame.

[0032] Figure 4 for Figure 3 A magnified view of a portion at point A.

[0033] Figure 5 This is a schematic diagram of the structure of the insulating cover of a high-voltage DC relay provided in an embodiment of this application.

[0034] Figure 6 This is a schematic diagram showing the distribution of the two yoke clamps of a high-voltage DC relay provided in an embodiment of this application.

[0035] Figure 7 This is a schematic diagram of the structure of a high-voltage DC relay provided in an embodiment of this application.

[0036] The labels in the attached diagram are explained as follows:

[0037] 10. High-voltage DC relay; 100. Yoke clamp; 110. Yoke clamp body; 111. First side plate; 112. Second side plate; 113. Third side plate; 1131. First face part; 1132. Second face part; 1133. Third face part; 114. Notch; 115. Second reinforcing part; 116. Limiting part; 117. Plug-in part; 118. Abutting part; 120. Assembly part; 121. Hanging part; 122. Anti-detachment part; 200. Insulating cover; 210. Mounting groove; 220. Limiting groove; 300. Stationary contact; 400. Frame plate; 500. Yoke plate; 600. Electromagnetic assembly; 700. U-shaped yoke. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] See Figure 1 , Figure 1 This illustration shows a structural schematic diagram of the yoke clip 100 of a high-voltage DC relay according to an embodiment of this application. The yoke clip 100 provided in this embodiment includes a yoke clip body 110 and an assembly 120; as shown Figure 2 and Figure 3 As shown, the yoke clamp body 110 surrounds a portion of the outer periphery of the insulating cover 200; the assembly 120 includes a hooking part 121 and an anti-detachment part 122. The hooking part 121 is connected to the yoke clamp body 110 and can be hooked against the top surface of the insulating cover 200. The anti-detachment part 122 is provided on the hooking part 121 and can be engaged with the top surface of the insulating cover 200 (see...). Figure 4 ).

[0045] After the yoke clamp 100 is attached to the insulating cover 200 via the hook-on portion of the fitting 120, the anti-detachment portion 122 of the fitting 120 further enhances the secure fit of the yoke clamp 100 on the insulating cover 200 by engaging with the insulating cover 200. This prevents the yoke clamp 100 from wobbling and detaching from the insulating cover 200 when the high-voltage DC relay is displaced, thus ensuring the arc-extinguishing effect of the high-voltage DC relay. Therefore, compared to the existing yoke clamp 100, this application, by adding the anti-detachment portion 122 to the fitting 120, effectively prevents the yoke clamp 100 from detaching from the insulating cover 200, ensuring the normal use of the product.

[0046] The hook-on portion 121 of the assembly 120 is mainly used to suspend the yoke clamp 100 on the insulating cover 200. The hook-on portion 121 can be generally L-shaped, and this application does not impose specific limitations on the structure of the hook-on portion 121. During processing, the hook-on portion 121 can be formed on the yoke clamp body 110 by bending. To facilitate the bending of the hook-on portion 121, such as... Figure 1 As shown, a notch 114 is provided on the top surface of the yoke clamp body 110 adjacent to the hook part 121. The notch 114 facilitates bending to form the hook part 121.

[0047] In one embodiment, the fitting 120 and the yoke clamp 100 are an integral structure. This arrangement ensures the connection strength between the fitting 120 and the yoke clamp 100, allowing the yoke clamp body 110 to stably surround the outer periphery of the insulating cover 200.

[0048] To facilitate the attachment of the mounting part 121, such as Figure 5 As shown, the top surface of the insulating cover 200 may be provided with a mounting groove 210 for inserting the hook part 121. Inserting the hook part 121 into the mounting groove 210 on the top surface of the insulating cover 200 can limit the yoke clamp 100 along the length direction of the insulating cover 200, and also reduce the probability of the yoke clamp 100 wobbling; furthermore, the mounting groove 210 can also position the yoke clamp 100 on the insulating cover 200, improving the assembly efficiency of the yoke clamp 100. The "length direction", "width direction", and "thickness direction" of the insulating cover 200 are defined as follows: Figure 2 As shown, the mounting groove 210 may penetrate the top surface of the insulating cover 200 and the side facing the yoke clamp body 110. It should be noted here that the mounting groove 210 does not penetrate the wall surface of the insulating cover 200 opposite to the top surface.

[0049] The anti-detachment part 122 of the fitting 120 and the insulating cover 200 can use a protrusion and groove matching method to prevent the yoke clamp 100 from detaching. Specifically, in one embodiment, as shown... Figure 1As shown, the anti-detachment part 122 can be an anti-detachment protrusion, and the bottom of the mounting groove 210 of the insulating cover 200 is provided with a limiting groove 220 that mates with and connects to the anti-detachment part 122 (see...). Figure 5 The hook part 121 can be limited by inserting the anti-detachment part 122 into the limiting groove 220 of the insulating cover 200 to prevent the yoke clamp 100 from shaking and falling off the insulating cover 200.

[0050] The anti-slip protrusions can be cylindrical, polyhedral, or similar in shape. Figure 1 The hemispherical shape shown is not a specific limitation in this application.

[0051] The anti-detachment protrusion can be one, two, or more. Considering the small size of the hook part 121, in order to reduce the processing difficulty of the yoke clamp 100, the anti-detachment part 122 can preferably be one. Optionally, the anti-detachment part 122 can be located in the middle of the free end of the hook part 121. Here, the free end of the hook part 121 refers to the end of the hook part 121 that is not connected to the yoke clamp body 110.

[0052] The anti-detachment part 122 can be integrally formed with the hook-on part 121, ensuring the connection strength between the two. As an example, the anti-detachment part 122 can be formed on the hook-on part 121 by stamping. Stamping can reduce the processing difficulty and improve processing efficiency. Of course, casting or other methods can also be used to integrally form the anti-detachment part 122 and the hook-on part 121.

[0053] In another embodiment, the anti-detachment part 122 can also be an anti-detachment groove, and the top surface of the insulating cover 200 is provided with a limiting protrusion that cooperates with and connects to the anti-detachment part 122.

[0054] The yoke clamp body 110 is mainly used to fix the permanent magnet and can cooperate with the permanent magnet to form the arc-extinguishing component of the relay. In one embodiment, the yoke clamp body 110 can be made of a soft magnetic material, which may include, but is not limited to, iron, cobalt, nickel and their alloys.

[0055] In one embodiment of this application, such as Figure 1 As shown, the yoke clamp body 110 includes a first side plate 111, a second side plate 112, and a third side plate 113. The first side plate 111 and the second side plate 112 are arranged opposite to each other, and the third side plate 113 is connected between the first side plate 111 and the third side plate 113. The yoke clamp body 100 is configured as a U-shaped structure, so that the yoke clamp 100 can surround the outer periphery of the permanent magnet in all directions, which can prevent the magnetic field generated by the permanent magnet from spreading outward and affecting the arc extinguishing effect.

[0056] The yoke clamp body 110 can be a one-piece structure, which can be bent to form the first side plate 111, the second side plate 112, and the third side plate 113 in sequence. This design facilitates the processing and production of the yoke clamp 100.

[0057] Considering that the one-piece yoke clamp body 110 is structurally unstable and prone to deformation, in one embodiment, such as Figure 1 As shown, at least one first reinforcing part is provided between the first side plate 111 and the third side plate 113; at least one second reinforcing part 115 is provided between the second side plate 112 and the third side plate 113. By adding the first reinforcing part and the second reinforcing part 115, the connection strength between the first side plate 111 and the third side plate 113 and between the second side plate 112 and the third side plate 113 can be guaranteed, thereby improving the structural stability of the yoke clamp body 110. Of course, in some other embodiments, a reinforcing part is provided between the first side plate 111 and the third side plate 113 and between the second side plate 112 and the third side plate 113.

[0058] Both the first and second reinforcing parts 115 can be provided in multiples along the thickness direction of the insulating cover 200, which can effectively improve the connection strength between the first side plate 111 and the third side plate 113, and between the second side plate 112 and the third side plate 113. The number of the first and second reinforcing parts 115 can be two, three, four, or more; this application does not impose a specific limitation on this.

[0059] The first reinforcing part can be formed between the first side plate 111 and the third side plate 113 by stamping, and the second reinforcing part 115 can be formed between the second side plate 112 and the third side plate 113 by stamping. Stamping can reduce the processing difficulty of the yoke clamp 100 and improve processing efficiency. Of course, the first reinforcing part and the second reinforcing part 115 can also be formed on the yoke clamp body 110 by casting or other methods.

[0060] Furthermore, such as Figure 1 As shown, in one embodiment of this application, the fitting 120 can be disposed on the third side plate 113. Since the fitting 120 of this application is provided with an anti-detachment part 122, the anti-detachment part 122 can effectively ensure that the yoke clamp 100 does not fall off the insulating cover 200. Therefore, it is not necessary to provide multiple fittings 120 on the yoke clamp body 110 in order to prevent the yoke clamp 100 from falling off the insulating cover 200. For example, the existing yoke clamp body 110 has at least one fitting 120 on both the first side plate 111 and the second side plate 112. By disposing of the fitting 120 on the third side plate 113, this application can minimize the number of fittings 120 while ensuring that the yoke clamp 100 does not fall off the insulating cover 200, which can greatly reduce the processing difficulty of the yoke clamp 100.

[0061] To minimize the size of high-voltage DC relays, their internal structure is made more compact, for example... Figure 2As shown, the stationary contact 300 of the high-voltage DC relay is usually close to the end edge of the insulating cover 200 along its length. This results in insufficient space in the middle area of ​​the end of the insulating cover 200 for mounting the accessory 120. However, considering that the existing stationary contact 300 is usually a circular contact, the two side areas of the end of the insulating cover 200 (i.e., the corner areas of the top surface of the insulating cover 200) have a certain amount of space for mounting the accessory 120. Therefore, this application places the accessory 120 in the non-central area of ​​the third side plate 113 of the yoke clamp body 110. Specifically, as shown... Figure 2 As shown, in one embodiment of this application, the top surface of the third side plate 113 has a first facet 1131, a second facet 1132, and a third facet 1133 arranged sequentially along the direction from the first side plate 111 to the second side plate 112. The second facet 1132 faces the stationary contact 300 of the high-voltage DC relay, and the mounting accessory 120 is disposed on the first facet 1131 or the third facet 1133. The first facet 1131 and the third facet 1133 face the corner area of ​​the top surface of the insulating cover 200. This arrangement allows the mounting accessory 120 to be attached to the corner area of ​​the top surface of the insulating cover 200, thus reducing the space occupied by the mounting accessory 120 and utilizing the corner area of ​​the top surface of the insulating cover 200, which is beneficial for the miniaturization of the high-voltage DC relay.

[0062] In some embodiments of this application, such as Figure 1 As shown, the surface of the yoke clamp body 110 facing the insulating cover 200 is provided with multiple limiting parts 116, and the multiple limiting parts 116 surround the permanent magnet mounting cavity. The permanent magnet is placed in the permanent magnet mounting cavity and is limited by the multiple limiting parts 116, which can prevent the permanent magnet from shaking, thereby ensuring the arc extinguishing effect.

[0063] The number and distribution of the limiting parts 116 can be set according to the size and shape of the permanent magnet, and this application does not make specific limitations here.

[0064] The limiting part 116 can be disposed on the first or second side plate of the yoke clamp body 110, or on the third side plate 113 of the yoke clamp body 110, depending on the position of the permanent magnet. The limiting part 116 can be formed on the yoke clamp body 110 by stamping. Stamping can reduce the processing difficulty of the yoke clamp 100 and improve processing efficiency. Of course, the limiting part 116 can also be formed on the yoke clamp body 110 by casting or other methods.

[0065] High-voltage DC relays typically also include a housing (not shown in the accompanying drawings), which protects the internal components of the high-voltage DC relay. To further ensure the assembly stability of the yoke clamp 100, this application also connects the yoke clamp 100 to the housing. For example... Figure 1As shown, in one embodiment, the top surface of the yoke clamp body 110 is provided with a plug-in portion 117, which can be connected to the housing of the high-voltage DC relay. The plug-in portion 117 can be inserted into a corresponding groove on the housing, thereby enabling the yoke clamp 100 to be connected to the housing.

[0066] The number and distribution of the connectors 117 can be set according to requirements. For example, such as Figure 1 As shown, the top surfaces of the first side plate 111 and the second side plate 112 of the yoke clamp body 110 are each provided with a plug-in portion 117.

[0067] See Figure 2 , Figure 3 and Figure 7 High-voltage DC relays typically also include a frame plate 400 and a yoke plate 500. The frame plate 400 is located at the bottom of the insulating cover 200 and connected to the yoke plate 500. The yoke plate 500 and the insulating cover 200 can form a contact chamber for accommodating a moving spring (not shown in the attached drawings), and the frame plate 400 facilitates the welding of the insulating cover 200 and the yoke plate 500.

[0068] To further ensure the assembly stability of the yoke clamp 100, this application also connects the yoke clamp 100 to the frame piece 400. For example... Figure 1 As shown, in one embodiment, the top surface of the yoke clamp body 110 is provided with an abutment portion 118, which can be connected to the frame plate 400 of the high-voltage DC relay. The abutment portion 118 can be supported on the frame plate 400, thereby enabling the yoke clamp 100 to be connected to the frame plate 400.

[0069] The number and distribution of the anchor points 118 can be set according to requirements. For example, such as... Figure 1 As shown, the bottom surfaces of the first side plate 111, the second side plate 112, and the third side plate 113 of the yoke clamp body 110 are each provided with an abutment part 118.

[0070] On the other hand, one embodiment of this application also provides a high voltage DC relay, which includes an insulating cover 200 and a yoke clamp 100 as described in any of the above claims. The yoke clamp body 110 of the yoke clamp 100 surrounds a portion of the outer periphery of the insulating cover 200, and the mounting part 120 of the yoke clamp 100 is attached to the top surface of the insulating cover 200.

[0071] After the yoke clip 100 of the high-voltage DC relay rests against the insulating cover 200 via the hook part 121 of the mounting accessory 120, the anti-detachment part 122 of the mounting accessory 120 further enhances the secure fit of the yoke clip 100 on the insulating cover 200 by cooperating with it. This prevents the yoke clip 100 from shaking and falling off the insulating cover 200 when the high-voltage DC relay is displaced, thus ensuring the arc-extinguishing effect of the high-voltage DC relay. Therefore, compared to the existing yoke clip 100, this application, by adding the anti-detachment part 122 to the mounting accessory 120, effectively prevents the yoke clip 100 from falling off the insulating cover 200, ensuring the normal use of the product.

[0072] like Figure 2 As shown, the high-voltage DC relay also includes a moving spring and two stationary contacts 300. The moving spring is movably disposed within the insulating cover 200, and the two stationary contacts 300 are spaced apart at both ends of the insulating cover 200 along its length and contact the corresponding ends of the moving spring along its length. In some embodiments of this application, two yoke clips 100 are provided, arranged along the length of the insulating cover 200 on both sides. This arrangement prevents the magnetic field generated by the permanent magnet from spreading outwards and affecting the arc-extinguishing effect.

[0073] Among them, such as Figure 6 As shown, the fittings 120 of the two yoke clamps 100 are aligned along the length of the insulating cover 200. With this arrangement, when the permanent magnet and the yoke clamps 100 are assembled together, the polarity of the permanent magnet effectively prevents the left and right yoke clamps 100 from being installed in reverse.

[0074] In some embodiments of this application, such as Figure 7 As shown, the high-voltage DC relay 10 also includes a U-shaped yoke 700, an electromagnetic component 600, and a push component (not shown in the figure). The electromagnetic component 600 is disposed on the U-shaped yoke 700 and can drive the moving spring to move towards or away from the stationary contact 300 through the push mechanism, so that the moving spring contacts the stationary contact 300 or disengages from the stationary contact 300.

[0075] In some embodiments of this application, the insulating cover 200 is a ceramic cover. By making the insulating cover 200 a ceramic cover, in addition to its insulating properties, it also possesses high hardness and compressive strength, providing good structural support and protection.

[0076] 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.

[0077] 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 yoke clip for a high-voltage DC relay, characterized in that, include: The yoke clamp body surrounds a portion of the outer periphery of the insulating cover of the high-voltage DC relay; and The assembly includes a hook-on part and an anti-detachment part. The hook-on part is connected to the main body of the yoke clamp and can be hooked onto the top surface of the insulating cover. The anti-detachment part is provided on the hook-on part and can be connected to the top surface of the insulating cover.

2. The yoke clamp according to claim 1, characterized in that, The anti-detachment part is an anti-detachment protrusion or an anti-detachment groove.

3. The yoke clamp according to claim 1, characterized in that, The yoke clamp body includes a first side plate, a second side plate, and a third side plate. The first side plate and the second side plate are arranged opposite to each other, and the third side plate is connected between the first side plate and the third side plate. The fitting is disposed on the third side plate.

4. The yoke clamp according to claim 3, characterized in that, The top surface of the third side plate has a first facet, a second facet, and a third facet arranged sequentially along the direction from the first side plate to the second side plate. The second facet is directly opposite the stationary contact of the high voltage DC relay, and the fitting is disposed on the first facet or the third facet.

5. The yoke clamp according to claim 3, characterized in that, At least one first reinforcing part is provided between the first side plate and the third side plate; and / or, at least one second reinforcing part is provided between the second side plate and the third side plate.

6. The yoke clamp according to claim 1, characterized in that, The yoke clamp also has at least one of the following features: The surface of the yoke clamp body facing the insulating cover is provided with multiple limiting parts, and the multiple limiting parts surround the permanent magnet mounting cavity; The top surface of the yoke clamp body is provided with a plug-in part, which can be connected to the housing of the high voltage DC relay. The top surface of the yoke clamp body is provided with abutment, which can be connected to the frame of the high voltage DC relay. The yoke clamp body and the assembly are an integral structure.

7. A high-voltage DC relay, characterized in that, Includes the yoke clamp as described in any one of claims 1 to 6.

8. The high-voltage DC relay according to claim 7, characterized in that, The high-voltage DC relay also includes an insulating cover, the main body of the yoke clamp is surrounded around a portion of the outer periphery of the insulating cover, and the fittings of the yoke clamp are attached to the top surface of the insulating cover.

9. The high-voltage DC relay according to claim 8, characterized in that, The top surface of the insulating cover is provided with an installation groove for inserting the hook part of the assembly. The bottom of the installation groove is provided with a limiting groove or limiting protrusion that cooperates with the anti-detachment part of the assembly.

10. The high-voltage DC relay according to claim 9, characterized in that, The yoke clamps are provided in two parts, and the two yoke clamps are arranged around both sides of the insulating cover along the length of the insulating cover.

11. The high-voltage DC relay according to claim 10, characterized in that, The fittings of the two yoke clamps are aligned along the length of the insulating cover.

12. The high-voltage DC relay according to claim 8, characterized in that, The high-voltage DC relay also includes two stationary contacts, which are spaced apart at both ends of the insulating cover along the length of the insulating cover.

13. The high-voltage DC relay according to claim 8, characterized in that, The insulating cover is a ceramic cover.

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