Pushing card, matching structure and electromagnetic relay

Abstract

The invention relates to a pushing card, a matching structure and an electromagnetic relay. The pushing card comprises a pushing main body; the first end of the pushing arm is connected to the pushing main body, the second end of the pushing arm is separated from the pushing main body, so that the pushing arm and the pushing main body define an accommodating notch for accommodating the first movable contact spring, the pushing arm is provided with a first abutting part located in the accommodating notch, and the first abutting part is opposite to the first movable contact spring and can abut against or be separated from the first movable contact spring; the protruding block is arranged on one surface of the pushing arm in a protruding mode, the side, facing the pushing body, of the protruding block is provided with a second abutting part, and the second abutting part is opposite to the second movable contact spring and can abut against or be separated from the second movable contact spring; the first abutting part and the second abutting part are arranged in a staggered mode in the thickness direction of the pushing body. Therefore, the first abutting force applied to the first abutting part by the first movable contact spring and the second abutting force applied to the second abutting part by the second movable contact spring cannot act on the same force arm, so that the pushing arm is not easy to deform.

Description

Technical Field

[0001] The present application relates to the technical field of relays, and particularly to a push card, a matching structure and an electromagnetic relay. Background Art

[0002] An electromagnetic relay is an electronic control device. In the electromagnetic relay, a push card is used to connect a moving reed in a contact part and an armature in a magnetic circuit part. When the armature moves, the armature drives the moving reed to move through the push card, so that a moving contact on the moving reed contacts or separates from a static contact on a static reed.

[0003] In the current electromagnetic relay, the moving reed is located in the push card. When the push card pushes the moving contact on the moving reed to separate from the static contact, the push card is prone to deformation and tilt, resulting in the inability to reliably disconnect the moving contact and the static contact, and there are potential safety hazards. Summary of the Invention

[0004] Based on this, in view of the problem that the push card is prone to deformation when pushing the moving reed to separate in the current electromagnetic relay, it is necessary to provide a push card, a matching structure and an electromagnetic relay with high structural strength and reduced deformation.

[0005] A push card is applied to a matching structure of an electromagnetic relay and cooperates with a first moving reed and a second moving reed of the matching structure. The push card includes:

[0006] A push main body;

[0007] A push arm, a first end of which is connected to the push main body, and a second end of which is separated from the push main body, so that the push arm and the push main body enclose a receiving notch for receiving the first moving reed. The push arm has a first abutting portion located in the receiving notch. The first abutting portion faces the first moving reed and can abut against or disengage from the first moving reed; and

[0008] A protruding block is protrudingly provided on a surface of the push arm. A second abutting portion is provided on a side of the protruding block facing the push main body. The second abutting portion faces the second moving reed and can abut against or disengage from the second moving reed;

[0009] Wherein, the first abutting portion and the second abutting portion are arranged staggeredly along the thickness direction of the push main body.

[0010] In an embodiment of the present application, the protruding block and the surface of the push arm enclose a receiving area for receiving the second moving reed, and there is a preset distance between the second moving reed and the surface of the push arm.

[0011] In an embodiment of the present application, the side of the pushing arm facing the pushing body further has a first guiding surface, which is located on the side of the first abutting portion away from the protruding block and is inclined toward the outside of the accommodating notch, and the first guiding surface is used to guide the first moving reed into the accommodating notch;

[0012] And / or, the side of the pushing arm facing the pushing body further has a first concave surface, which is located on the side of the first abutting portion facing the protruding block and is recessed in the first abutting portion, so that the first abutting portion protrudes on the surface of the pushing arm facing the pushing body.

[0013] In an embodiment of the present application, the side of the protruding block facing the pushing body further has a second guiding surface, which is located on the side of the second abutting portion facing the first abutting portion and is inclined toward the outside of the protruding block, and the second guiding surface is used to guide the second moving reed into the side of the second abutting portion;

[0014] And / or, the side of the protruding block facing the pushing body further has a second concave surface, which is located on the side of the second abutting portion away from the first abutting portion and is recessed in the second abutting portion, so that the second abutting portion protrudes on the surface of the protruding block facing the pushing body.

[0015] In an embodiment of the present application, the first abutting portion has a first abutting surface, and the first abutting portion contacts the first moving reed through the first abutting surface;

[0016] And / or, the second abutting portion has a second abutting surface, and the second abutting portion contacts the moving reed through the second abutting surface.

[0017] In an embodiment of the present application, the distance between the first abutting portion and the first moving reed is greater than the distance between the second abutting portion and the second moving reed;

[0018] And / or, the dimension of the protruding block in the thickness direction of the pushing body is adapted to the dimension of the pushing arm in the thickness direction of the pushing body.

[0019] In an embodiment of the present application, the accommodating notch includes a first cavity and a second cavity that are communicated. The first cavity is used to accommodate the first moving reed, and the second cavity is used to accommodate the compression spring of the matching structure;

[0020] And / or, the pushing body has a third guide surface on the side facing the pushing arm, the third guide surface is located at the end of the accommodating notch and is inclined toward the outside of the accommodating notch, and the third guide surface is used to guide the compression spring of the matching structure to move into the accommodating notch.

[0021] A matching structure, comprising a dynamic spring part and a push card as described in any of the above technical features;

[0022] The movable spring part includes a first movable spring piece, a first movable contact arranged on the first movable spring piece, a second movable spring piece and a second movable contact arranged on the second movable spring piece, the first movable spring piece is located in the accommodating notch of the push card and is opposite to the first abutting portion of the push card, and the second movable spring piece is opposite to the second abutting portion of the push card.

[0023] In one embodiment of the present application, the length of the first movable reed is greater than the length of the second movable reed;

[0024] And / or, the diameter of the first moving contact is greater than the diameter of the second moving contact.

[0025] An electromagnetic relay comprises an electromagnetic drive structure, a static spring part and a matching structure as described in any of the above technical features, wherein the electromagnetic drive structure drives a push card in the matching structure to move, so that the push card drives the moving spring part in the matching structure to contact or separate from the static spring part.

[0026] After adopting the above technical solution, this application has at least the following technical effects:

[0027] The push card, matching structure and electromagnetic relay of the present application, in the push card, one end of the push arm is connected to the push body, and the other end is separated from the push body to surround an accommodating notch, the first movable spring piece of the matching structure is accommodated in the accommodating notch, the protruding block is protruding from the push arm, the push arm has a first abutting portion located in the accommodating notch, the first abutting portion is opposite to the first movable spring piece, the protruding block has a second abutting portion facing the push body, the second abutting portion is opposite to the second movable spring piece, and the first abutting portion and the second abutting portion are staggered in the thickness direction of the push body.

[0028] In this way, when the pushing card pushes the first movable spring, the first abutting portion abuts the first movable spring, and abuts the second movable spring through the second abutting portion. Since the first abutting portion and the second abutting portion are staggered along the thickness direction of the pushing body, the first abutting force applied by the first movable spring to the first abutting portion and the second abutting force applied by the second movable spring to the second abutting portion are staggered along the thickness direction of the pushing body, so that the first abutting force and the second abutting force will not act on the same force arm, thereby making the pushing arm less likely to deform, so that the pushing arm can accurately push the first movable spring and the second movable spring, achieve reliable disconnection, and reduce safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 FIG. 1 is a schematic diagram of an electromagnetic relay according to an embodiment of the present application.

[0030] Figure 2 for Figure 1 The exploded diagram of the electromagnetic relay is shown.

[0031] Figure 3 for Figure 2 The schematic diagram shown is of an electromagnetic relay with the casing removed.

[0032] Figure 4 for Figure 3 The schematic diagram of the matching structure and the electromagnetic driving structure in the magnetic relay shown in one viewing angle.

[0033] Figure 5 for Figure 4 The shown schematic diagram is a diagram of the cooperation between the matching structure and the electromagnetic driving structure from another perspective.

[0034] Figure 6 for Figure 4 The schematic diagram of the push card and the movable spring part in the matching structure shown is a schematic diagram of the matching from a certain perspective.

[0035] Figure 7 for Figure 6 The schematic diagram shown is a schematic diagram of the push card and the movable spring part cooperating from another perspective.

[0036] Figure 8 for Figure 6 A schematic diagram of the push card shown in one viewing angle.

[0037] Figure 9 for Figure 8 A schematic diagram of the push card shown in another perspective.

[0038] Figure 10 for Figure 8 A schematic diagram of the push card shown in yet another viewing angle.

[0039] Figure 11 forFigure 7 Partial enlarged view of the push card shown at A.

[0040] Figure 12 For Figure 8 Partial enlarged view of the push card shown at B.

[0041] Figure 13 For Figure 6 Schematic diagram of the moving spring part shown.

[0042] Wherein: 10, electromagnetic relay; 100, mating structure; 110, push card; 111, push main body; 1111, third guiding surface; 112, push arm; 1121, first end; 1122, second end; 1123, first abutting part; 11231, first abutting surface; 1124, first guiding surface; 1125, first concave surface; 113, protruding block; 1131, second abutting part; 11311, second abutting surface; 1132, second guiding surface; 1133, second concave surface; 114, receiving notch; 1141, first cavity; 1142, second cavity; 115, receiving area; 120, moving spring part; 121, first moving spring piece; 122, second moving spring piece; 123, first moving contact; 124, second moving contact; 125, compression spring; 200, electromagnetic driving structure; 300, static spring part; 400, housing. Detailed implementation manners

[0043] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0044] In the description of the present application, it should be understood that if there appear such terms as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0045] In addition, if 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0046] In this application, unless otherwise clearly specified and defined, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In this application, unless otherwise clearly specified and defined, if there is a description such as a first feature being "on" or "under" a second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower horizontal level than the second feature.

[0048] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate 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 intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for illustrative purposes and do not represent the only implementation.

[0049] It is understandable that an electromagnetic relay is an electronic control device. In the electromagnetic relay, a push card is used to connect the moving reed of the contact part and the armature of the magnetic circuit part. When the armature moves, the armature drives the moving reed to move through the push card, so that the moving contact on the moving reed contacts or separates from the static contact on the static reed. However, when the push card pushes the moving contact on the moving reed to separate from the static contact, the push card is prone to deformation and tilt, resulting in the inability to reliably disconnect the moving contact and the static contact, presenting a safety hazard.

[0050] To this end, referring to Figures 1 to 5 , the present application provides a new type of push card 110. The push card 110 is applied to the matching structure 100 of the electromagnetic relay 10 and is used to realize the installation of the moving reed part 120 in the matching structure 100. Figure 1 FIG. is a schematic diagram of the electromagnetic relay 10 according to an embodiment of the present application. Figure 2 For Figure 1 the exploded schematic diagram of the electromagnetic relay 10 shown in Figure 3 For Figure 2 the schematic diagram of the electromagnetic relay 10 shown in Figure 4 For Figure 3 the schematic diagram of the cooperation between the matching structure 100 and the electromagnetic drive structure 200 in the electromagnetic relay 10 shown in Figure 5 For Figure 4 the schematic diagram of the cooperation between the matching structure 100 and the electromagnetic drive structure 200 shown in

[0051] The push card 110 of the present application has high structural strength, can reduce the deformation of the push card 110, enable the push card 110 to have higher process control ability, realize the reliable disconnection of the electromagnetic relay 10, and reduce safety hazards. To better illustrate the structure of the push card 110, the structure of the electromagnetic relay 10 and the matching structure 100 will be briefly introduced here.

[0052] Referring to Figures 1 to 3 , in an embodiment, the matching structure 100 includes a moving reed part 120 and the push card 110 of the present application, and the electromagnetic relay 10 includes an electromagnetic drive structure 200, a static reed part 300, and the matching structure 100 of the present application. The electromagnetic drive structure 200 and the static reed part 300 are fixedly arranged, and the matching structure 100 is movably arranged between the electromagnetic drive structure 200 and the static reed part 300. The electromagnetic drive structure 200 can drive the push card 110 to move, so that the push card 110 drives the moving reed part 120 to move, and further makes the moving reed part 120 contact or separate from the static reed part 300, realizing the closing or opening of the electromagnetic relay 10.

[0053] Specifically, the moving spring part 120 includes a first moving spring piece 121, a first moving contact 123 disposed on the first moving spring piece 121, a second moving spring piece 122, and a second moving contact 124 disposed on the second moving spring piece 122. The static spring part 300 includes a first static spring piece (not shown), a first static contact (not shown) disposed on the first static spring piece, a second static spring piece (not shown), and a second static contact (not shown) disposed on the second static spring piece. The first moving contact 123, the second moving contact 124, the first static contact, and the second static contact protrude. The first moving spring piece 121 is disposed opposite to the first static spring piece, and the second moving spring piece 122 is disposed opposite to the second static spring piece. The first moving spring piece 121 and the second moving spring piece 122 are disposed in the pushing card 110, and the pushing card 110 can drive the first moving spring piece 121 and the second moving spring piece 122 to move synchronously.

[0054] When the electromagnetic driving structure 200 drives the pushing card 110 to move towards the static spring part 300, the pushing card 110 can push the first moving spring piece 121 and the second moving spring piece 122 towards the first static spring piece and the second static spring piece, so that the first moving contact 123 contacts the first static contact, and the second moving contact 124 contacts the second static contact, and the electromagnetic relay 10 closes to conduct the circuit. When the electromagnetic driving structure 200 drives the pushing card 110 to move away from the static spring part 300, the pushing card 110 can push the first moving spring piece 121 and the second moving spring piece 122 to move away from the first static spring piece and the second static spring piece, so that the first moving contact 123 separates from the first static contact, and the second moving contact 124 separates from the second static contact, and the electromagnetic relay 10 opens to disconnect the circuit.

[0055] Refer to Figure 1 and Figure 2 In an embodiment, the electromagnetic relay 10 further includes a housing 400, and the electromagnetic driving structure 200, the mating structure 100, and the static spring part 300 are disposed in the housing 400. The housing 400 protects the electromagnetic driving structure 200, the mating structure 100, and the static spring part 300. In Figure 3 Remove the housing 400 of the electromagnetic relay 10 to expose the static spring part 300, the moving spring part 120, the pushing card 110, and the electromagnetic driving structure 200 in the electromagnetic relay 10.

[0056] It should be noted that the focus of this application is on the improvement of the pushing card 110 and the cooperation between the pushing card 110 and the first moving spring piece 121 and the second moving spring piece 122. The structures and principles of the electromagnetic driving structure 200 and the static spring part 300 are not the focus of this application. The structures and connection relationships of the electromagnetic driving structure 200 and the static spring part 300 can adopt existing structures, and will not be elaborated in this application.

[0057] Refer to Figures 3 to 10, in one embodiment, the pushing card 110 includes a pushing main body 111, a pushing arm 112, and a protruding block 113. The pushing arm 112 has a first end 1121 connected to the pushing main body 111 and a second end 1122 separated from the pushing main body 111, so that the pushing arm 112 and the pushing main body 111 enclose a receiving notch 114 for receiving the first moving reed 121. The pushing arm 112 has a first abutting portion 1123 located in the receiving notch 114. The first abutting portion 1123 faces the first moving reed 121 and can abut against or disengage from the first moving reed 121. The protruding block 113 protrudes from one surface of the pushing arm 112, and the side of the protruding block 113 facing the pushing main body 111 has a second abutting portion 1131.

[0058] The second abutting portion 1131 faces the second moving reed 122 and can abut against or disengage from the second moving reed 122. Among them, the first abutting portion 1123 and the second abutting portion 1131 are arranged staggeredly along the thickness direction of the pushing main body 111. Figure 6 For Figure 4 the schematic diagram of the cooperation between the pushing card 110 and the moving reed part 120 in the cooperation structure 100 shown in one perspective, Figure 7 For Figure 6 the schematic diagram of the cooperation between the pushing card 110 and the moving reed part 120 shown in another perspective, Figure 8 For Figure 6 the schematic diagram of the pushing card 110 shown in one perspective, Figure 9 For Figure 8 the schematic diagram of the pushing card 110 shown in another perspective, Figure 10 For Figure 8 the schematic diagram of the pushing card 110 shown in yet another perspective.

[0059] The pushing main body 111 is the main body structure of the pushing card 110, and the pushing main body 111 is arranged in a plate shape. The pushing main body 111 is located in the electromagnetic relay 10 and is cooperatively connected with the electromagnetic driving structure 200. The electromagnetic driving structure 200 drives the pushing main body 111 to move, so as to drive the pushing card 110 to move closer to or away from the static reed part 300, thereby driving the first moving reed 121 and the second moving reed 122 to move synchronously by the pushing card 110.

[0060] The pushing arm 112 has opposite first end 1121 and second end 1122 along its width direction. As Figure 8 shown, the up-down direction and the top-bottom direction of the pushing card 110 are the height direction of the pushing card 110, the left-right direction of the pushing card 110 is the width direction of the pushing card 110, and the front-back direction of the pushing card 110 is the thickness direction of the pushing card 110. When describing the structure of the pushing card 110 later, only Figure 8 the direction of the pushing card 110 shown is used as the reference. And, for the convenience of description,Figures 8 to 10 The pushing card 110 is arranged in the vertical direction. Figures 4 to 7 Fig. Figures 4 to 7 is a diagram of the actual use state of the pushing card 110, and the pushing card 110 is arranged in the horizontal direction.

[0061] The first end 1121 of the pushing arm 112 is connected to the pushing body 111, the second end 1122 of the pushing arm 112 extends in a direction away from the first end 1121, and the pushing arm 112 is separated from the pushing body 111. That is, the pushing arm 112 has a cantilever beam structure relative to the pushing body 111. At this time, the pushing arm 112 and the pushing body 111 enclose a receiving notch 114, and the receiving notch 114 is a notch groove on the pushing card 110. The receiving notch 114 communicates with the outside of the pushing card 110, and the first moving reed 121 can move into the receiving notch 114 from the opening of the receiving notch 114 to realize the installation of the moving reed part 120. Moreover, the first moving reed 121 and the second moving reed 122 are arranged side by side in the width direction of the pushing card 110, and at least the first moving reed 121 in the moving reed part 120 is located in the receiving notch 114.

[0062] The pushing arm 112 abuts against or separates from the first moving reed 121 through the first abutting portion 1123. Specifically, the side of the pushing arm 112 facing the pushing body 111 has the first abutting portion 1123, and the first abutting portion 1123 is located in the receiving notch 114. The first moving reed 121 can be opposite to the first abutting portion 1123 in the receiving notch 114. When the pushing card 110 pushes the first moving reed 121 away from the static reed part 300, the first abutting portion 1123 abuts against the first moving reed 121. When the pushing card 110 is stationary or the pushing card 110 pushes the first moving reed 121 towards the static reed part 300, the first abutting portion 1123 is separated from the first moving reed 121.

[0063] The pushing card 110 abuts against or separates from the second moving reed 122 through the second abutting portion 1131 on the protruding block 113. Specifically, the protruding block 113 is arranged on one surface of the pushing arm 112 and is located at the first end 1121 of the pushing arm 112. The side of the protruding block 113 facing the pushing body 111 has the second abutting portion 1131. After the moving reed part 120 and the pushing card 110 are assembled, the second moving reed 122 is opposite to the second abutting portion 1131. When the pushing card 110 pushes the second moving reed 122 away from the static reed part 300, the second abutting portion 1131 abuts against the second moving reed 122. When the pushing card 110 is stationary or the pushing card 110 pushes the second moving reed 122 towards the static reed part 300, the second abutting portion 1131 is separated from the second moving reed 122.

[0064] When the pushing card 110 pushes the movable spring part 120 away from the static spring part 300, the pushing card 110 applies force to the first movable spring piece 121 through the first abutting portion 1123, and applies force to the second movable spring piece 122 through the second abutting portion 1131, so that the first movable spring piece 121 is separated from the first static spring piece, and the second movable spring piece 122 is separated from the second static spring piece (specifically, the first movable contact 123 on the first movable spring piece 121 is separated from the first static contact of the first static spring piece, and the second movable contact 124 on the second movable spring piece 122 is separated from the second static contact on the second static spring piece, which will not be repeated below).

[0065] Since the protruding block 113 is protrudingly arranged on a surface of the pushing arm 112, that is, the protruding block 113 is protrudingly arranged relative to the pushing arm 112, at this time, the first abutting portion 1123 on the pushing arm 112 and the second abutting portion 1131 on the protruding block 113 are staggered in the thickness direction of the pushing card 110, that is, the first abutting portion 1123 and the second abutting portion 1131 are not in a straight line along the thickness direction, and thus the first abutting portion 1123 and the second abutting portion 1131 abut against the first movable spring piece 121 and the second movable spring piece 122 in different planes.

[0066] When the pushing card 110 pushes the first movable spring piece 121 through the first abutment portion 1123 and pushes the second movable spring piece 122 through the second abutment portion 1131, the first movable spring piece 121 applies a reaction force (i.e., the first abutment force) to the first abutment portion 1123, and the second movable spring piece 122 applies a reaction force (i.e., the second abutment force) to the second abutment portion 1131. At this time, the first abutment force acts on the pushing arm 112, and the second abutment force acts on the protrusion.

[0067] That is to say, the first abutting force and the second abutting force are also staggered along the thickness direction of the pushing card 110 to avoid the first abutting force and the second abutting force from acting on the pushing arm 112 at the same time, and further avoid the first abutting force and the second abutting force from acting on the same force arm. In this way, the first abutting force and the second abutting force will not be superimposed, thereby reducing the reaction force on the pushing arm 112, thereby strengthening the structural strength of the pushing arm 112 and minimizing the deformation of the pushing arm 112.

[0068] In this way, when the pushing card 110 pushes the first movable spring piece 121 and the second movable spring piece 122 to move in a direction away from the static spring part 300, the pushing arm 112 is not easy to deform, so that the pushing card 110 has a higher process control capability, so that the pushing card 110 can accurately push the first movable spring piece 121 and the second movable spring piece 122 to move, and then the first movable spring piece 121 is accurately separated from the first static spring piece, and the second movable spring piece 122 is accurately separated from the second movable spring piece 122, thereby realizing the reliable separation of the movable spring part 120 and the static spring part 300, thereby realizing the reliable disconnection of the electromagnetic relay 10 and reducing safety hazards.

[0069] In one embodiment, the pushing body 111, the pushing arm 112, and the protruding block 113 are of an integral structure. In this way, the structural strength of the pushing card 110 can be improved, the breakage at the joints of the pushing body 111, the pushing arm 112, and the protruding block 113 can be avoided, the structural strength of the pushing card 110 can be ensured, and at the same time, the forming process of the pushing card 110 can be facilitated and the assembly process can be reduced.

[0070] Refer to Figures 3 to 10 , in one embodiment, the protruding block 113 and the surface of the pushing arm 112 enclose a receiving area 115 for receiving the second moving reed 122, and there is a preset distance between the second moving reed 122 and the surface of the pushing arm 112. As shown in Figures 6 to 10 , the first moving reed 121 is located in the receiving notch 114, and the second moving reed 122 is suspended on the surface of the pushing arm 112 and is located in the receiving area 115.

[0071] During the assembly process of the pushing card 110 and the moving reed part 120, the second moving reed 122 can move to the receiving area 115 on the surface of the pushing arm 112 without moving into the receiving notch 114. In this way, the second moving reed 122 will not scrape against the inner wall of the receiving notch 114, avoiding interference between the second moving reed 122 and the pushing arm 112 and the pushing body 111, and further avoiding the occurrence of scraping debris.

[0072] It can be understood that the moving reed part 120 further includes a compression spring 125. The compression spring 125 is located on the side of the first moving reed 121 and the second moving reed 122 away from the static reed part 300. The compression spring 125, the first moving reed 121, and the second moving reed 122 are assembled into the pushing card 110 at the same time, and the end of the compression spring 125 faces the pushing body 111. When the pushing card 110 pushes the static reed part 300 towards the static reed part 300, the pushing card 110 can abut against the compression spring 125, thereby pushing the first moving reed 121 into contact with the first static reed and the second moving reed 122 into contact with the second static reed.

[0073] For the current cooperation structure 100 of the pushing card 110 and the moving reed part 120, both the first moving reed 121 and the second moving reed 122 are located in the receiving notch 114. When pushing the first moving reed 121 and the second moving reed 122 in the width direction of the pushing card 110, due to the elastic force of the compression spring 125 on the first moving reed 121 and the second moving reed 122, the second moving reed 122 may scrape against the inner wall of the receiving notch 114, resulting in the situation of scraping debris.

[0074] To this end, in the present application, a receiving area 115 for receiving the second moving reed 122 is defined by surrounding the surface of the protruding block 113 and the pushing arm 112. When the first moving reed 121, the second moving reed 122, and the compression spring 125 are assembled simultaneously, the second moving reed 122 directly moves into the receiving area 115 without passing through the receiving notch 114. In this way, interference between the second moving reed 122 and the inner wall of the receiving notch 114 is avoided, and thus the situation of chip scraping is avoided, facilitating the assembly of the moving reed part 120 and the pushing card 110.

[0075] Moreover, there is a preset distance between the bottom of the second moving reed 122 (i.e., the end of the second moving reed 122 facing the pushing arm 112) and the surface of the pushing arm 112. On the one hand, the bottom of the second moving reed 122 will not scrape against the surface of the pushing arm 112. On the other hand, when the pushing card 110 pushes the second moving reed 122 to move, the second moving reed 122 will not interfere with the pushing arm 112, ensuring the reliability of the movement of the second moving reed 122. The present application does not limit the preset distance between the second moving reed 122 and the pushing arm 112, as long as the second moving reed 122 can be opposite to the second abutting portion 1131 and does not scrape against the pushing arm 112.

[0076] Refer to Figures 3 to 10 , in an embodiment, the distance between the first abutting portion 1123 and the first moving reed 121 is greater than the distance between the second abutting portion 1131 and the second moving reed 122. That is to say, the first moving reed 121 is far from the first abutting portion 1123, and the second moving reed 122 is close to the first abutting portion 1123. That is, when the pushing card 110 moves, the movement stroke of the second abutting portion 1131 contacting the second moving reed 122 is shorter, and the movement stroke of the first abutting portion 1123 contacting the first moving reed 121 is longer. In this way, the stroke when the first moving contact 123 is disconnected can be longer, and the stroke when the second moving contact 124 is disconnected can be shorter.

[0077] It can be understood that since the movement stroke of the second abutting portion 1131 is shorter, the second abutting portion 1131 will contact the second moving reed 122 earlier than the first abutting portion 1123, causing the second moving reed 122 to be separated from the second static reed first, and the first moving reed 121 to be separated from the first static reed later, so that the second moving reed 122 and the first moving reed 121 are disconnected one after the other. In this way, the phenomenon of contact point ablation can be completely left to the first moving reed 121 that is disconnected later, effectively protecting the second moving contact 124 of the second moving reed 122 from ablation, achieving the purpose of stabilizing the contact resistance.

[0078] Refer to Figures 7 to 11In one embodiment, the pushing arm 112 further has a first guide surface 1124 on the side facing the pushing body 111. The first guide surface 1124 is located on the side of the first abutting portion 1123 away from the protruding block 113 and is inclined toward the outer side of the accommodating notch 114. The first guide surface 1124 is used to guide the first movable spring piece 121 to move into the accommodating notch 114. Figure 11 for Figure 7 The push card 110 is shown in a partially enlarged view at A.

[0079] The first guide surface 1124 is located on the surface of the push arm 112 facing the push body 111 and corresponds to the open end of the receiving notch 114, and the first guide surface 1124 is inclined outward to increase the size of the open end of the receiving notch 114. When the movable spring part 120 is assembled, the first movable spring piece 121 can slide along the first guide surface 1124 to guide the first movable spring piece 121 to move into the receiving notch 114. After the first guide surface 1124 is set, the first guide surface 1124 can guide the movement of the first movable spring piece 121 to avoid interference between the first movable spring piece 121 and the push arm 112, thereby facilitating the assembly of the first movable spring piece 121.

[0080] In one embodiment, the first guide surface 1124 is a guide plane, through which the first movable spring piece 121 is guided to move into the receiving notch 114. Of course, in other embodiments of the present application, the first guide surface 1124 may also be a guide arc surface, through which the first movable spring piece 121 is guided to move into the receiving notch 114.

[0081] See also Figures 7 to 11 In one embodiment, the side of the pushing arm 112 facing the pushing body 111 also has a first recessed surface 1125, and the first recessed surface 1125 is located on the side of the first abutting portion 1123 facing the protruding block 113, and is recessed in the first abutting portion 1123 so that the first abutting portion 1123 protrudes on the surface of the pushing arm 112 facing the pushing body 111.

[0082] The first recessed surface 1125 is the surface of the pushing arm 112 facing the pushing body 111. The first recessed surface 1125 is recessed relative to the first abutment portion 1123, and the first recessed surface 1125 and the first guide surface 1124 are respectively located on both sides of the first abutment portion 1123 along the width direction, so that the first abutment portion 1123 is protruded on the surface of the pushing arm 112 facing the pushing body 111, and the first abutment portion 1123 contacts or separates from the first movable spring sheet 121, so that the first movable spring sheet 121 contacts or separates from the first static spring sheet.

[0083] In this way, the contact area between the pushing arm 112 and the first moving reed 121 can be reduced. The first moving reed 121 only contacts the first abutting portion 1123 and does not contact the first concave surface 1125, avoiding uneven contact surfaces due to excessive contact area, and further preventing the instability of the first moving reed 121, so that the first moving reed 121 can accurately separate from the first stationary reed.

[0084] In one embodiment, the first concave surface 1125 is a flat surface, an arc surface, a type of splicing of flat surfaces, a type of splicing of arc surfaces, or a type of splicing of a flat surface and an arc surface. It can be understood that the shape of the first concave surface 1125 is not limited in principle, as long as the first concave surface 1125 does not contact the first moving reed 121. Refer to Figure 11 , in this embodiment, the first concave surface 1125 is a type of splicing of arc surfaces.

[0085] Refer to Figures 7 to 10 、 Figure 12 , in one embodiment, the side of the protruding block 113 facing the pushing body 111 further has a second guiding surface 1132. The second guiding surface 1132 is located on the side of the second abutting portion 1131 facing the first abutting portion 1123 and is inclined towards the outside of the protruding block 113. The second guiding surface 1132 is used to guide the second moving reed 122 to move into the side surface of the second abutting portion 1131. Figure 12 For Figure 8 the partial enlarged view of the pushing card 110 shown at B.

[0086] The second guiding surface 1132 is located on the surface of the protruding block 113 facing the pushing body 111 and corresponds to the open end of the accommodating area 115. Moreover, the second guiding surface 1132 is inclined towards the outside to increase the size of the open end of the accommodating area 115. During the assembly of the moving reed part 120, the second moving reed 122 can slide along the second guiding surface 1132 to guide the second moving reed 122 to move into the accommodating area 115. After setting the second guiding surface 1132, the second guiding surface 1132 can guide the movement of the second moving reed 122, avoiding interference between the second moving reed 122 and the protruding block 113 and facilitating the assembly of the second moving reed 122.

[0087] In one embodiment, the second guiding surface 1132 is a guiding flat surface, and the second moving reed 122 is guided into the accommodating area 115 through the guiding flat surface. Of course, in other embodiments of the present application, the second guiding surface 1132 can also be a guiding arc surface, and the second moving reed 122 is guided into the accommodating area 115 through the guiding arc surface.

[0088] Refer to Figures 7 to 10 、 Figure 12In one embodiment, the side of the protruding block 113 facing the pushing body 111 also has a second recessed surface 1133, and the second recessed surface 1133 is located on the side of the second abutting portion 1131 away from the first abutting portion 1123, and is recessed in the second abutting portion 1131 so that the second abutting portion 1131 protrudes on the surface of the protruding block 113 facing the pushing body 111.

[0089] The second recessed surface 1133 is a partial surface of the protruding block 113 facing the pushing body 111. The second recessed surface 1133 is recessed relative to the second abutting portion 1131, and the second recessed surface 1133 and the second guide surface 1132 are respectively located on both sides of the second abutting portion 1131 along the width direction, so that the second abutting portion 1131 is protruded on the surface of the protruding block 113 facing the pushing body 111, and the second abutting portion 1131 contacts or separates from the second movable spring piece 122, so that the second movable spring piece 122 contacts or separates from the second static spring piece.

[0090] In this way, the contact area between the protruding block 113 and the second movable spring piece 122 can be reduced. The second movable spring piece 122 only contacts the second abutting portion 1131 and does not contact the second recessed surface 1133, thereby avoiding the uneven contact surface caused by excessive contact area, which in turn leads to the instability of the second movable spring piece 122, so that the second movable spring piece 122 can be accurately separated from the second static spring piece.

[0091] In one embodiment, the second concave surface 1133 is a plane, an arcuate surface, a plane and a plane joint type, an arcuate surface and an arcuate surface joint type, or a plane and an arcuate surface joint type. It can be understood that the shape of the second concave surface 1133 is not limited in principle, as long as the second concave surface 1133 does not contact the second movable spring 122. Figure 12 In this embodiment, the second recessed surface 1133 is a plane.

[0092] See also Figures 7 to 10 , Figure 12 In one embodiment, when the second movable spring piece 122 contacts the second abutting portion 1131, the second movable spring piece 122 also contacts the second guide surface 1132. In this way, the second guide surface 1132 can decompose the second abutting force applied by the second movable spring piece 122 to the protruding block 113 into forces in two directions. The forces in the two directions can synthesize a rotational torque, thereby reducing the second abutting force on the protruding block 113, thereby reducing the force on the pushing arm 112, and making the pushing arm 112 less likely to deform.

[0093] See also Figures 7 to 12, in one embodiment, the dimension of the protruding block 113 in the thickness direction of the pushing body 111 is adapted to the dimension of the pushing arm 112 in the thickness direction of the pushing body 111. That is to say, the thickness dimension of the protruding block 113 is substantially the same as the thickness dimension of the pushing arm 112. In this way, the structural strength of the pushing arm 112 and the protruding block 113 can be ensured, so that the acting forces received by the protruding block 113 and the pushing arm 112 are substantially the same, and the pushing arm 112 is not easily deformed.

[0094] Refer to Figures 7 to 11 , in one embodiment, the first abutting portion 1123 has a first abutting surface 11231, and the first abutting portion 1123 contacts the first moving spring piece 121 through the first abutting surface 11231. That is to say, the first abutting portion 1123 contacts the first moving spring piece 121 in a surface contact manner. In this way, the contact area between the first abutting portion 1123 and the first moving spring piece 121 can be ensured, and the situation that the movement of the first moving spring piece 121 is unreliable caused by point contact or line contact can be avoided, so that the first moving spring piece 121 can be accurately separated from the first static spring piece.

[0095] In one embodiment, the first abutting surface 11231 is a plane. The first abutting surface 11231 being a plane can ensure that the first abutting portion 1123 has a certain contact area with the first moving spring piece 121, and will not excessively increase the contact area with the first moving spring piece 121, improving the reliability of the disconnection of the first moving spring piece 121. Of course, in other embodiments of the present application, the first abutting surface 11231 can also be an arc surface, a type of splicing of planes, a type of splicing of arc surfaces, or a type of splicing of a plane and an arc surface.

[0096] Refer to Figures 7 to 10 、 Figure 12 , in one embodiment, the second abutting portion 1131 has a second abutting surface 11311, and the second abutting portion 1131 contacts the second moving spring piece 122 through the second abutting surface 11311. That is to say, the second abutting portion 1131 contacts the second moving spring piece 122 in a surface contact manner. In this way, the contact area between the second abutting portion 1131 and the second moving spring piece 122 can be ensured, and the situation that the movement of the second moving spring piece 122 is unreliable caused by point contact or line contact can be avoided, so that the second moving spring piece 122 can be accurately separated from the second static spring piece.

[0097] In one embodiment, the second abutting surface 11311 is a flat surface. The second abutting surface 11311 being a flat surface can ensure that the second abutting portion 1131 has a certain contact area with the second moving reed 122, and will not excessively increase the contact area with the second moving reed 122, thereby improving the reliability of the disconnection of the second moving reed 122. Of course, in other embodiments of the present application, the second abutting surface 11311 can also be an arc surface, a type of splicing of flat surfaces, a type of splicing of arc surfaces, or a type of splicing of a flat surface and an arc surface.

[0098] Refer to Figures 6 to 10 , in one embodiment, the receiving notch 114 includes a first cavity 1141 and a second cavity 1142 that communicate with each other. The first cavity 1141 is used to receive the first moving reed 121, and the second cavity 1142 is used to receive the compression spring 125 of the matching structure 100. The first cavity 1141 and the second cavity 1142 form a stepped receiving notch 114. The compression spring 125 is located on the side of the second moving reed 122 away from the second static reed. After the first moving reed 121, the second moving reed 122, and the compression spring 125 are assembled, the bottom of the compression spring 125 extends in a direction away from the second moving reed 122.

[0099] When the moving reed part 120 is installed, the compression spring 125 is located in the first cavity 1141. When the moving reed part 120 is pushed in the width direction, the second moving reed 122 gradually moves to the surface of the pushing arm 112, the compression spring 125 gradually moves into the second cavity 1142, and faces the inner wall of the second cavity 1142. At the same time, the first moving reed 121 gradually moves into the first cavity 1141. At this time, the first moving reed 121 faces the first abutting portion 1123, and the second moving reed 122 faces the second abutting portion 1131.

[0100] When the pushing card 110 pushes the moving reed part 120 to move towards the static reed part 300, the pushing card 110 can abut against the compression spring 125 and push the compression spring 125 to move towards the static reed part 300. Furthermore, the compression spring 125 pushes the first moving reed 121 and the second moving reed 122 to move towards the static reed part 300. When the pushing card 110 pushes the moving reed part 120 to move away from the static reed part 300, the pushing card 110 abuts against the second moving reed 122 through the second abutting portion 1131 and abuts against the first moving reed 121 through the first abutting portion 1123, so that the first moving reed 121 is separated from the first static reed and the second moving reed 122 is separated from the second static reed.

[0101] Refer to Figures 8 to 10, in one embodiment, one side of the pushing body 111 facing the pushing arm 112 has a third guiding surface 1111. The third guiding surface 1111 is located at the end of the receiving notch 114 and is inclined towards the outside of the receiving notch 114. The third guiding surface 1111 is used to guide the compression spring 125 of the fitting structure 100 into the receiving notch 114. The third guiding surface 1111 is located on the broken arm of the pushing body 111 facing the pushing arm 112 and corresponds to the open end of the receiving notch 114. Moreover, the third guiding surface 1111 is inclined outwards to increase the size of the receiving notch 114. When the moving spring part 120 is assembled, the compression spring 125 can slide along the third guiding surface 1111 to guide the compression spring 125 into the second cavity 1142 of the receiving notch 114. After the third guiding surface 1111 is provided, the third guiding surface 1111 can guide the movement of the compression spring 125, avoid interference between the compression spring 125 and the pushing body 111, and facilitate the assembly of the compression spring 125.

[0102] For the pushing card 110 of the present application, the first abutting portion 1123 corresponds to the first moving spring piece 121, the second abutting portion 1131 corresponds to the second moving spring piece 122, and it is defined that the first abutting portion 1123 and the second abutting portion 1131 are arranged staggeredly along the thickness direction of the pushing card 110. In this way, the first abutting force exerted by the first moving spring piece 121 on the first abutting portion 1123 and the second abutting force exerted by the second moving spring piece 122 on the second abutting portion 1131 are arranged staggeredly along the thickness direction of the pushing body, so that the first abutting force and the second abutting force do not act on the same lever arm, and further the pushing arm 112 is not easily deformed, so that the pushing arm 112 can accurately push the first moving spring piece 121 and the second moving spring piece 122 to achieve reliable disconnection and reduce potential safety hazards.

[0103] Moreover, the present application defines the receiving area 115 for receiving the second moving spring piece 122 on the surface of the pushing arm 112, avoiding contact between the second moving spring piece 122 and the pushing arm 112 during the assembly of the moving spring part 120, and further avoiding the occurrence of shaving, which facilitates the assembly of the moving spring part 120. At the same time, the first guiding surface 1124, the second guiding surface 1132 and the third guiding surface 1111 are provided to guide the assembly of the moving spring part 120, which facilitates the assembly of the moving spring part 120.

[0104] Furthermore, the first abutting portion 1123 is arranged away from the first moving spring piece 121, and the second abutting portion 1131 is arranged close to the second moving spring piece 122, so that the stroke when the first moving contact 123 is disconnected is longer, and the stroke when the second moving contact 124 is disconnected is shorter. In this way, the second moving spring piece 122 and the first moving spring piece 121 are disconnected one after the other, and the phenomenon of contact point ablation can be completely left to the first moving spring piece 121 that is disconnected later, which can effectively protect the second moving contact 124 of the second moving spring piece 122 from ablation and achieve the purpose of stable contact resistance.

[0105] Refer to Figures 4 to 7 , the present application also provides a mating structure 100, which includes a moving spring part 120 and a pushing card 110 as in any of the above embodiments. The moving spring part 120 includes a first moving spring piece 121, a first moving contact 123 disposed on the first moving spring piece 121, a second moving spring piece 122, and a second moving contact 124 disposed on the second moving spring piece 122. The first moving spring piece 121 is located in the receiving notch 114 of the pushing card 110 and is opposite to the first abutting portion 1123 of the pushing card 110, and the second moving spring piece 122 is opposite to the second abutting portion 1131 of the pushing card 110.

[0106] After the mating structure 100 of the present application adopts the pushing card 110 of the above embodiment, the pushing card 110 can accurately drive the first moving spring piece 121 and the second moving spring piece 122 to move, minimize the deformation degree of the pushing card 110, enable the pushing card 110 to have higher process control ability, and enable the moving spring part 120 to accurately separate from the static spring part 300.

[0107] Refer to Figure 6 , Figure 7 and Figure 13 , in one embodiment, the length of the first moving spring piece 121 is greater than the length of the second moving spring piece 122. Figure 13 For Figure 6 the schematic diagram of the moving spring part 120 shown. That is to say, the dimension of the first moving spring piece 121 along the height direction of the pushing card 110 is greater than the dimension of the second moving spring piece 122 along the height direction of the pushing card 110.

[0108] In this way, after the moving spring part 120 and the pushing card 110 are assembled, the first moving spring piece 121 can extend into the receiving notch 114, and the second moving spring piece 122 can not contact the pushing arm 112, avoiding interference between the second moving spring piece 122 and the pushing arm 112 and ensuring the accuracy of the movement of the second moving spring piece 122.

[0109] Refer to Figure 6 , Figure 7 and Figure 13 , in one embodiment, the diameter of the first moving contact 123 is greater than the diameter of the second moving contact 124. That is to say, the diameters of the first moving contact 123 and the second moving contact 124 are different, and the diameter of the first moving contact 123 is greater than the diameter of the second moving contact 124. In this way, the resistance of the electrical connection between the first moving contact 123 and the first static contact can be reduced, which is beneficial to high-current transmission.

[0110] Refer to Figures 1 to 4, the present application also provides an electromagnetic relay 10, which includes an electromagnetic driving structure 200, a static reed part 300, and a matching structure 100 as described in any of the above embodiments. The electromagnetic driving structure 200 drives the pushing card 110 in the matching structure 100 to move, so that the pushing card 110 drives the moving reed part 120 in the matching structure 100 to contact or separate from the static reed part 300. After the electromagnetic relay 10 of the present application adopts the matching structure 100 of the above embodiment, it can enable the pushing card 110 to accurately drive the first moving reed piece 121 and the second moving reed piece 122 to move, minimize the deformation degree of the pushing card 110 as much as possible, enable the pushing card 110 to have a higher process control ability, and enable the moving reed part 120 to accurately separate from the static reed part 300.

[0111] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, 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, it should be considered as the scope described in this specification.

[0112] The above-described embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A pushing card, characterized in that, Applied to the matching structure of the electromagnetic relay and matched with the first movable spring piece and the second movable spring piece of the matching structure, the push card includes: Promote the subject; a push arm, wherein the first end of the push arm is connected to the push body and the second end is separated from the push body, so that the push arm and the push body are surrounded by a receiving notch for receiving the first movable spring piece, the push arm has a first abutting portion located in the receiving notch, the first abutting portion is opposite to the first movable spring piece and can abut against or be separated from the first movable spring piece; and A protruding block protrudingly disposed on a surface of the pushing arm, wherein the protruding block has a second abutting portion on a side facing the pushing body, wherein the second abutting portion is opposite to the second movable spring piece and can abut against or be separated from the second movable spring piece; Wherein, the first abutting portion and the second abutting portion are staggered along the thickness direction of the pushing body.

2. The pusher card according to claim 1, wherein, The protruding block and the surface of the pushing arm are arranged to form a receiving area for receiving the second movable spring piece, and a preset distance exists between the second movable spring piece and the surface of the pushing arm.

3. The pusher card according to claim 1, characterized in that, The pushing arm further has a first guide surface on a side facing the pushing body, the first guide surface is located on a side of the first abutting portion away from the protruding block and is inclined toward the outer side of the accommodating notch, and the first guide surface is used to guide the first movable spring piece to move into the accommodating notch; And / or, the pushing arm also has a first recessed surface on the side facing the pushing body, the first recessed surface is located on the side of the first abutting portion facing the protruding block, and is recessed in the first abutting portion so that the first abutting portion protrudes on the surface of the pushing arm facing the pushing body.

4. The pushing card according to claim 1, wherein The protruding block further has a second guide surface on one side facing the pushing body, the second guide surface is located on the side of the second abutting portion facing the first abutting portion and is inclined toward the outer side of the protruding block, and the second guide surface is used to guide the second movable spring piece to move into the side of the second abutting portion; And / or, the protruding block also has a second recessed surface on the side facing the pushing body, the second recessed surface is located on the side of the second abutting portion away from the first abutting portion, and is recessed in the second abutting portion so that the second abutting portion protrudes from the surface of the protruding block facing the pushing body.

5. The pushing card according to claim 1, wherein The first abutting portion has a first abutting surface, and the first abutting portion contacts the first movable spring piece through the first abutting surface; And / or, the second abutting portion has a second abutting surface, and the second abutting portion contacts the movable spring piece via the second abutting surface.

6. The pusher card according to any one of claims 1 to 5, characterized in that, The distance between the first abutting portion and the first movable spring piece is greater than the distance between the second abutting portion and the second movable spring piece; And / or, a dimension of the protruding block along the thickness direction of the pushing body matches a dimension of the pushing arm along the thickness direction of the pushing body.

7. The pushing card according to any one of claims 1 to 5, characterized in that, The receiving gap comprises a first cavity and a second cavity which are connected, the first cavity is used to accommodate the first movable spring piece, and the second cavity is used to accommodate the compression spring of the matching structure; And / or, one side of the pushing body facing the pushing arm has a third guiding surface, which is located at the end of the receiving notch and is inclined towards the outside of the receiving notch, and the third guiding surface is used to guide the compression spring of the engaging structure into the receiving notch.

8. A mating structure, characterized in that, It includes a moving spring part and the pushing card according to any one of claims 1 to 7; The moving spring part includes a first moving spring piece, a first moving contact arranged on the first moving spring piece, a second moving spring piece, and a second moving contact arranged on the second moving spring piece. The first moving spring piece is located in the receiving notch of the pushing card and is opposite to the first abutting part of the pushing card, and the second moving spring piece is opposite to the second abutting part of the pushing card.

9. The mating structure according to claim 8, wherein, The length of the first moving spring piece is greater than the length of the second moving spring piece; And / or, the diameter of the first moving contact is greater than the diameter of the second moving contact.

10. An electromagnetic relay, characterized in that, It includes an electromagnetic driving structure, a static spring part, and the engaging structure according to any one of claims 8 or 9. The electromagnetic driving structure drives the pushing card in the engaging structure to move, so that the pushing card drives the moving spring part in the engaging structure to contact or separate from the static spring part.

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