Push card, mating structure and electromagnetic relay

Abstract

This application relates to a push card, a mating structure, and an electromagnetic relay. The push card includes: a push body; a push arm, with a first end connected to the push body and a second end separated from the push body, such that the push arm and the push body form a receiving notch for accommodating a first movable spring, the push arm having a first abutting portion located in the receiving notch, the first abutting portion facing the first movable spring and capable of abutting or disengaging from the first movable spring; and a protruding block protruding from a surface of the push arm, the protruding block having a second abutting portion on the side facing the push body, the second abutting portion facing the second movable spring and capable of abutting or disengaging from the second movable spring; wherein the first abutting portion and the second abutting portion are offset along the thickness direction of the push body. Thus, 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 will not act on the same lever arm, making the push arm less prone to deformation.

Description

Technical Field

[0001] This application relates to the field of relay technology, and in particular to a push card, a mating structure, and an electromagnetic relay. Background Technology

[0002] An electromagnetic relay is an electronic control device. It uses a push card to connect the moving spring in the contact part and the armature in the magnetic circuit part. When the armature moves, it drives the moving spring through the push card, so that the moving contact on the moving spring comes into contact with or separates from the stationary contact on the stationary spring.

[0003] In current electromagnetic relays, 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 stationary contact, the push card is prone to deformation and tilting, which makes it impossible for the moving contact and the stationary contact to reliably disconnect, posing a safety hazard. Utility Model Content

[0004] Therefore, it is necessary to address the problem that the push card is prone to deformation when it pushes the moving spring to separate in current electromagnetic relays, and to provide a push card with high structural strength and reduced deformation, a matching structure, and an electromagnetic relay.

[0005] A push card is used in the mating structure of an electromagnetic relay and meshes with a first moving spring and a second moving spring of the mating structure. The push card includes:

[0006] The driving force;

[0007] A push arm, with a first end connected to the push body and a second end separated from the push body, such that the push arm and the push body form a receiving notch for accommodating the first movable spring; the push arm has a first abutting portion located in the receiving notch, the first abutting portion being opposite to the first movable spring and capable of abutting or disengaging from the first movable spring; and

[0008] A protruding block is provided on one surface of the push arm. The protruding block has a second abutting portion on the side facing the push body. The second abutting portion is opposite to the second movable spring and can abut against or disengage from the second movable spring.

[0009] The first abutting part and the second abutting part are offset from each other along the thickness direction of the pushing body.

[0010] In one embodiment of this application, the protrusion and the surface of the push arm form a receiving area for accommodating the second movable spring, and there is a preset distance between the second movable spring and the surface of the push arm.

[0011] In one embodiment of this application, the push arm has a first guide surface on the side facing the push body. The first guide surface is located on the side of the first abutment portion away from the protrusion and is inclined towards the outside of the receiving notch. The first guide surface is used to guide the first moving spring to move into the receiving notch.

[0012] And / or, the push arm has a first recessed surface on the side facing the push body, the first recessed surface being located on the side of the first abutment portion facing the protrusion block and recessed within the first abutment portion, so that the first abutment portion protrudes from the surface of the push arm facing the push body.

[0013] In one embodiment of this application, the protrusion block has a second guide surface on the side facing the pushing body. The second guide surface is located on the side of the second abutment portion facing the first abutment portion and is inclined towards the outside of the protrusion block. The second guide surface is used to guide the second moving spring to move into the side of the second abutment portion.

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

[0015] In one embodiment of this application, the first abutting portion has a first abutting surface, and the first abutting portion contacts the first movable spring through the first abutting surface;

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

[0017] In one embodiment of this application, the distance between the first abutting portion and the first movable spring is greater than the distance between the second abutting portion and the second movable spring;

[0018] And / or, the dimension of the protrusion along the thickness direction of the pushing body is adapted to the dimension of the pushing arm along the thickness direction of the pushing body.

[0019] In one embodiment of this application, the receiving notch includes a first cavity and a second cavity that communicate with each other, the first cavity being used to receive the first movable spring, and the second cavity being used to receive the compression spring of the mating structure;

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

[0021] A mating structure includes a movable spring portion and a pusher as described in any of the above technical features;

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

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

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

[0025] An electromagnetic relay includes an electromagnetic drive structure, a stationary spring portion, and a mating structure as described in any of the above technical features. The electromagnetic drive structure drives a pusher in the mating structure to move, causing the pusher to bring the moving spring portion in the mating structure into contact with or separate from the stationary spring portion.

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

[0027] The push card, mating structure, and electromagnetic relay of this application include a push card in which one end of a push arm is connected to a push body and the other end is separated from the push body to form a receiving notch. The first moving spring of the mating structure is received in the receiving notch. A protruding block is protruding from the push arm. The push arm has a first abutting portion located in the receiving notch, which is opposite to the first moving spring. The protruding block has a second abutting portion facing the push body, which is opposite to the second moving spring. The first abutting portion and the second abutting portion are offset from the thickness direction of the push body.

[0028] Thus, when the pusher pushes the first movable spring, the first abutting part abuts against the first movable spring, and the second abutting part abuts against the second movable spring. Since the first abutting part and the second abutting part are staggered along the thickness direction of the pusher body, the first abutting force applied by the first movable spring to the first abutting part and the second abutting force applied by the second movable spring to the second abutting part are staggered along the thickness direction of the pusher body. This prevents the first abutting force and the second abutting force from acting on the same lever arm, thereby making the pusher arm less prone to deformation. This allows the pusher arm to accurately push the first movable spring and the second movable spring, achieving reliable disconnection and reducing safety hazards. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of an electromagnetic relay according to an embodiment of this application.

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

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

[0032] Figure 4 for Figure 3 The diagram shown illustrates the interaction between the magnetic relay's cooperating structure and the electromagnetic drive structure from one perspective.

[0033] Figure 5 for Figure 4 The diagram shown illustrates the interaction between the mating structure and the electromagnetic drive structure from another perspective.

[0034] Figure 6 for Figure 4 The diagram shown illustrates the engagement of the push card and the moving spring in the mating structure from one perspective.

[0035] Figure 7 for Figure 6 The diagram shown illustrates the engagement of the push card and the moving spring from another perspective.

[0036] Figure 8 for Figure 6 The diagram shown is a schematic representation of the push card from one perspective.

[0037] Figure 9 for Figure 8 The diagram shown is a schematic of the push card from another perspective.

[0038] Figure 10 for Figure 8 The diagram shown is a schematic representation of the push card from another perspective.

[0039] Figure 11 for Figure 7 The image shows a magnified view of the push card at point A.

[0040] Figure 12 for Figure 8 The image shows a magnified view of the push card at point B.

[0041] Figure 13 for Figure 6 The diagram shows the movable spring section.

[0042] Wherein: 10, electromagnetic relay; 100, mating structure; 110, pusher; 111, pusher body; 1111, third guide surface; 112, pusher arm; 1121, first end; 1122, second end; 1123, first abutting part; 11231, first abutting surface; 1124, first guide surface; 1125, first recessed surface; 113, protruding block; 1131, second abutting part; 11311, second... 1132. Abutting surface; 1133. Second guide surface; 1134. Second recessed surface; 114. Accommodating notch; 1141. First cavity; 1142. Second cavity; 115. Accommodating area; 120. Moving spring portion; 121. First moving spring; 122. Second moving spring; 123. First moving contact; 124. Second moving contact; 125. Compression spring; 200. Electromagnetic drive structure; 300. Static spring portion; 400. Housing. Detailed Implementation

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] Understandably, an electromagnetic relay is an electronic control device. It utilizes a push-lock mechanism connected between a moving spring in the contact section and an armature in the magnetic circuit. When the armature actuates, it drives the moving spring via the push-lock, causing the moving contact on the moving spring to contact or separate from the stationary contact on the stationary spring. However, when the push-lock separates the moving contact from the stationary contact, it is prone to deformation and tilting, preventing reliable disconnection and posing a safety hazard.

[0050] For this purpose, please refer to Figures 1 to 5 This application provides a novel push card 110. The push card 110 is applied in the mating structure 100 of the electromagnetic relay 10 to realize the installation of the moving spring portion 120 in the mating structure 100. Figure 1 This is a schematic diagram of an electromagnetic relay 10 according to an embodiment of this application. Figure 2 for Figure 1 The exploded view of the electromagnetic relay 10 shown is shown below. Figure 3 for Figure 2 The diagram shown is a schematic of the electromagnetic relay 10 without its outer casing 400. Figure 4 for Figure 3 The diagram shown illustrates the interaction between the mating structure 100 and the electromagnetic drive structure 200 in the electromagnetic relay 10 from one perspective. Figure 5 for Figure 4 The diagram shows the cooperation between the mating structure 100 and the electromagnetic drive structure 200 from another perspective.

[0051] The push card 110 of this application has high structural strength, which can reduce the deformation of the push card 110, enabling the push card 110 to have higher process control capabilities, 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 cooperating structure 100 will be briefly introduced here.

[0052] See Figures 1 to 3 In one embodiment, the mating structure 100 includes a movable spring portion 120 and a push card 110 as described in this application. The electromagnetic relay 10 includes an electromagnetic drive structure 200, a stationary spring portion 300, and the mating structure 100 as described in this application. The electromagnetic drive structure 200 and the stationary spring portion 300 are fixedly disposed, and the mating structure 100 is movably disposed between the electromagnetic drive structure 200 and the stationary spring portion 300. The electromagnetic drive structure 200 can drive the push card 110 to move, so that the push card 110 drives the movable spring portion 120 to move, thereby causing the movable spring portion 120 to contact or separate from the stationary spring portion 300, realizing the closing or opening of the electromagnetic relay 10.

[0053] Specifically, the movable spring portion 120 includes a first movable spring 121, a first movable contact 123 disposed on the first movable spring 121, a second movable spring 122, and a second movable contact 124 disposed on the second movable spring 122. The stationary spring portion 300 includes a first stationary spring (not shown), a first stationary contact (not shown) disposed on the first stationary spring, a second stationary spring (not shown), and a second stationary contact (not shown) disposed on the second stationary spring. The first movable contact 123, the second movable contact 124, the first stationary contact, and the second stationary contact are protruding. The first movable spring 121 is disposed opposite to the first stationary spring, and the second movable spring 122 is disposed opposite to the second stationary spring. The first movable spring 121 and the second movable spring 122 are disposed in a pusher 110, which can drive the first movable spring 121 and the second movable spring 122 to move synchronously.

[0054] When the electromagnetic drive structure 200 drives the push card 110 to move toward the stationary spring portion 300, the push card 110 can push the first moving spring 121 and the second moving spring 122 toward the first stationary spring and the second stationary spring, so that the first moving contact 123 contacts the first stationary contact and the second moving contact 124 contacts the second stationary contact, and the electromagnetic relay 10 closes to conduct the circuit. When the electromagnetic drive structure 200 drives the push card 110 to move away from the stationary spring portion 300, the push card 110 can push the first moving spring 121 and the second moving spring 122 to move away from the first stationary spring and the second stationary spring, so that the first moving contact 123 separates from the first stationary contact and the second moving contact 124 separates from the second stationary contact, and the electromagnetic relay 10 disconnects to disconnect the circuit.

[0055] See Figure 1 and Figure 2 In one embodiment, the electromagnetic relay 10 further includes a housing 400, within which the electromagnetic drive structure 200, the mating structure 100, and the stationary spring portion 300 are disposed. The housing 400 provides protection for the electromagnetic drive structure 200, the mating structure 100, and the stationary spring portion 300. Figure 3 In the middle, the outer shell 400 of the electromagnetic relay 10 is removed to expose the stationary spring portion 300, the moving spring portion 120, the push card 110, and the electromagnetic drive structure 200 in the electromagnetic relay 10.

[0056] It is worth noting that the focus of this application is on the improvement of the push card 110 and the cooperation between the push card 110 and the first moving spring 121 and the second moving spring 122. The structure and principle of the electromagnetic drive structure 200 and the stationary spring part 300 are not the focus of this application. The structure and connection relationship of the electromagnetic drive structure 200 and the stationary spring part 300 can adopt the existing structure, and this application will not elaborate on them.

[0057] See Figures 3 to 10In one embodiment, the push card 110 includes a push body 111, a push arm 112, and a protrusion 113. The push arm 112 has a first end 1121 connected to the push body 111 and a second end 1122 separated from the push body 111, such that the push arm 112 and the push body 111 form a receiving notch 114 for receiving a first movable spring 121. The push arm 112 has a first abutting portion 1123 located in the receiving notch 114, which faces the first movable spring 121 and is capable of abutting or disengaging from the first movable spring 121. The protrusion 113 protrudes from a surface of the push arm 112, and the side of the protrusion 113 facing the push body 111 has a second abutting portion 1131.

[0058] The second abutting part 1131 is opposite to the second movable spring 122 and can abut or disengage from the second movable spring 122. The first abutting part 1123 and the second abutting part 1131 are offset along the thickness direction of the pushing body 111. Figure 6 for Figure 4 The diagram shown illustrates the engagement of the push card 110 and the moving spring portion 120 in the mating structure 100 from one perspective. Figure 7 for Figure 6 The diagram shown illustrates the engagement of the push card 110 and the moving spring portion 120 from another perspective. Figure 8 for Figure 6 The diagram shown is a schematic representation of the push card 110 from one perspective. Figure 9 for Figure 8 The diagram shown is a schematic representation of the push card 110 from another perspective. Figure 10 for Figure 8 The diagram shown is a schematic representation of the push card 110 from another perspective.

[0059] The pushing body 111 is the main structure of the pushing card 110, and the pushing body 111 is plate-shaped. The pushing body 111 is located in the electromagnetic relay 10 and is connected in cooperation with the electromagnetic drive structure 200. The electromagnetic drive structure 200 drives the pushing body 111 to move, thereby driving the pushing card 110 to move towards or away from the stationary spring portion 300, so that the pushing card 110 drives the first moving spring 121 and the second moving spring 122 to move synchronously.

[0060] The push arm 112 has a first end 1121 and a second end 1122 opposite to each other along its width direction, such as Figure 8 As shown, the vertical and top-bottom directions of the push card 110 represent its height, the horizontal direction represents its width, and the front-back direction represents its thickness. The following description of the push card 110's structure will only use the vertical direction of the push card 110 as an example. Figure 8 The direction of the push card 110 shown is taken as a reference, and, for ease of description, Figures 8 to 10 The middle pusher card 110 is arranged vertically. Figures 4 to 7 To illustrate the actual usage status of the push card 110, the push card 110 is arranged horizontally.

[0061] The first end 1121 of the push arm 112 is connected to the push body 111, and the second end 1122 of the push arm 112 extends away from the first end 1121, separating the push arm 112 from the push body 111. That is, the push arm 112 has a cantilever beam structure relative to the push body 111. In this case, the push arm 112 and the push body 111 form a receiving notch 114, which is a notch groove on the push card 110. The receiving notch 114 communicates with the outside of the push card 110, and the first movable spring 121 can move into the receiving notch 114 from the opening of the receiving notch 114 to realize the installation of the movable spring portion 120. Furthermore, the first movable spring 121 and the second movable spring 122 are arranged side by side along the width direction of the push card 110, and at least the first movable spring 121 in the movable spring portion 120 is located in the receiving notch 114.

[0062] The push arm 112 abuts against or separates from the first movable spring 121 via the first abutment portion 1123. Specifically, the push arm 112 has a first abutment portion 1123 on the side facing the push body 111, and the first abutment portion 1123 is located in the receiving notch 114, where the first movable spring 121 can be opposite to the first abutment portion 1123. When the push card 110 pushes the first movable spring 121 away from the stationary spring portion 300, the first abutment portion 1123 abuts against the first movable spring 121. When the push card 110 is stationary or pushes the first movable spring 121 toward the stationary spring portion 300, the first abutment portion 1123 separates from the first movable spring 121.

[0063] The push card 110 abuts against or separates from the second movable spring 122 via the second abutment portion 1131 on the protrusion 113. Specifically, the protrusion 113 is disposed on a surface of the push arm 112 and located at the first end 1121 of the push arm 112. The side of the protrusion 113 facing the push body 111 has the second abutment portion 1131. After the movable spring portion 120 is assembled with the push card 110, the second movable spring 122 is opposite to the second abutment portion 1131. When the push card 110 pushes the second movable spring 122 away from the stationary spring portion 300, the second abutment portion 1131 abuts against the second movable spring 122. When the push card 110 is stationary or when the push card 110 pushes the second movable spring 122 toward the stationary spring portion 300, the second abutment portion 1131 separates from the second movable spring 122.

[0064] When the pusher 110 pushes the movable spring portion 120 away from the stationary spring portion 300, the pusher 110 applies force to the first movable spring 121 through the first abutment portion 1123 and applies force to the second movable spring 122 through the second abutment portion 1131, so that the first movable spring 121 is separated from the first stationary spring and the second movable spring 122 is separated from the second stationary spring (specifically, the first movable contact 123 on the first movable spring 121 is separated from the first stationary contact of the first stationary spring, and the second movable contact 124 on the second movable spring 122 is separated from the second stationary contact of the second stationary spring, which will not be described in detail later).

[0065] Since the protruding block 113 protrudes from one surface of the push arm 112, that is, the protruding block 113 protrudes from the push arm 112, the first abutting part 1123 on the push arm 112 and the second abutting part 1131 on the protruding block 113 are offset in the thickness direction of the push card 110. That is, the first abutting part 1123 and the second abutting part 1131 are not on the same straight line in the thickness direction. As a result, the first abutting part 1123 and the second abutting part 1131 abut against the first moving spring 121 and the second moving spring 122 in different planes.

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

[0067] In other words, the first abutting force and the second abutting force are also staggered along the thickness direction of the pusher 110 to avoid the first abutting force and the second abutting force acting on the pusher arm 112 at the same time, and thus to avoid the first abutting force and the second abutting force acting on the same lever arm. In this way, the first abutting force and the second abutting force will not be superimposed, reducing the reaction force on the pusher arm 112, thereby strengthening the structural strength of the pusher arm 112 and minimizing the deformation of the pusher arm 112.

[0068] Thus, when the pusher 110 pushes the first moving spring 121 and the second moving spring 122 to move away from the stationary spring portion 300, the pusher arm 112 is less likely to deform, giving the pusher 110 a higher process control capability. This allows the pusher 110 to accurately push the first moving spring 121 and the second moving spring 122 to move, thereby accurately separating the first moving spring 121 from the first stationary spring and accurately separating the second moving spring 122 from the second moving spring 122. This achieves reliable separation of the moving spring portion 120 from the stationary spring portion 300, thereby achieving 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 protrusion 113 are integrated into one structure. This improves the structural strength of the pushing card 110, prevents breakage at the connection between the pushing body 111, the pushing arm 112, and the protrusion 113, ensures the structural strength of the pushing card 110, and facilitates the molding and processing of the pushing card 110, reducing assembly steps.

[0070] See Figures 3 to 10 In one embodiment, the protrusion 113 and the surface of the push arm 112 form a receiving area 115 for accommodating the second movable spring 122, and a predetermined distance exists between the second movable spring 122 and the surface of the push arm 112. The receiving area 115 is as follows: Figures 6 to 10 As shown, the first moving spring 121 is located in the receiving notch 114, and the second moving spring 122 is suspended on the surface of the push arm 112 and located in the receiving area 115.

[0071] During the assembly of the push card 110 and the movable spring portion 120, the second movable spring 122 can move to the receiving area 115 on the surface of the push arm 112 without needing to be moved into the receiving notch 114. In this way, the second movable spring 122 will not scrape against the inner wall of the receiving notch 114, avoiding interference between the second movable spring 122 and the push arm 112 and the push body 111, thereby preventing the occurrence of scraping.

[0072] Understandably, the movable spring portion 120 also includes a compression spring 125. The compression spring 125 is located on the side of the first movable spring 121 and the second movable spring 122 that is away from the stationary spring portion 300. The compression spring 125, the first movable spring 121, and the second movable spring 122 are simultaneously assembled into the push card 110, with the end of the compression spring 125 facing the push body 111. When the push card 110 pushes the stationary spring portion 300 toward the stationary spring portion 300, the push card 110 can abut against the compression spring 125, thereby pushing the first movable spring 121 to contact the first stationary spring and the second movable spring 122 to contact the second stationary spring.

[0073] Regarding the current mating structure 100 of the push card 110 and the movable spring part 120, both the first movable spring 121 and the second movable spring 122 are located in the receiving notch 114. When the first movable spring 121 and the second movable spring 122 are pushed along the width direction of the push card 110, due to the elastic force of the compression spring 125 on the first movable spring 121 and the second movable spring 122, the second movable spring 122 may scrape against the inner wall of the receiving notch 114, resulting in scraping.

[0074] Therefore, this application uses the protruding block 113 and the surface of the push arm 112 to form a receiving area 115 for receiving the second moving spring 122. When the first moving spring 121, the second moving spring 122 and the compression spring 125 are assembled at the same time, the second moving spring 122 moves directly into the receiving area 115 without passing through the receiving notch 114. In this way, interference between the second moving spring 122 and the inner wall of the receiving notch 114 is avoided, thereby avoiding the occurrence of scratches and facilitating the assembly of the moving spring part 120 and the push card 110.

[0075] Furthermore, a predetermined distance exists between the bottom of the second movable spring 122 (i.e., the end of the second movable spring 122 facing the push arm 112) and the surface of the push arm 112. On the one hand, the bottom of the second movable spring 122 will not scrape against the surface of the push arm 112; on the other hand, when the push card 110 pushes the second movable spring 122 to move, the second movable spring 122 will not interfere with the push arm 112, ensuring the reliability of the movement of the second movable spring 122. This application does not limit the predetermined distance between the second movable spring 122 and the push arm 112, as long as the second movable spring 122 can be opposite to the second abutment portion 1131 without scraping against the push arm 112.

[0076] See Figures 3 to 10 In one embodiment, the distance between the first abutment 1123 and the first movable spring 121 is greater than the distance between the second abutment 1131 and the second movable spring 122. That is, the first movable spring 121 is farther from the first abutment 1123, and the second movable spring 122 is closer to the first abutment 1123. Specifically, when the card 110 is pushed, the second abutment 1131 has a shorter travel distance when contacting the second movable spring 122, while the first abutment 1123 has a longer travel distance when contacting the first movable spring 121. This allows for a longer travel distance when the first movable contact 123 is disconnected, and a shorter travel distance when the second movable contact 124 is disconnected.

[0077] Understandably, because the second contact part 1131 has a shorter travel distance, the second contact part 1131 will contact the second moving spring 122 before the first contact part 1123. This causes the second moving spring 122 to separate from the second stationary spring first, and the first moving spring 121 to separate from the first stationary spring later. This allows the second moving spring 122 and the first moving spring 121 to disconnect one after the other. In this way, the contact erosion phenomenon can be completely left to the first moving spring 121 that disconnects later. This can effectively protect the second moving contact 124 of the second moving spring 122 from erosion and achieve the purpose of stabilizing the contact resistance.

[0078] See Figures 7 to 11In one embodiment, the push arm 112 also has a first guide surface 1124 on the side facing the push body 111. The first guide surface 1124 is located on the side of the first abutment portion 1123 away from the protrusion 113 and is inclined towards the outside of the receiving notch 114. The first guide surface 1124 is used to guide the first moving spring 121 to move into the receiving notch 114. Figure 11 for Figure 7 The enlarged view of the push card 110 at point A is shown.

[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 opening end of the receiving notch 114. The first guide surface 1124 is inclined outwards to increase the size of the opening end of the receiving notch 114. When the movable spring portion 120 is assembled, the first movable spring 121 can slide along the first guide surface 1124 to guide the first movable spring 121 into the receiving notch 114. With the first guide surface 1124 provided, the first guide surface 1124 can guide the movement of the first movable spring 121, avoiding interference between the first movable spring 121 and the push arm 112, and facilitating the assembly of the first movable spring 121.

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

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

[0082] The first recessed surface 1125 is the surface of the push arm 112 facing the push body 111. The first recessed surface 1125 is recessed relative to the first abutment portion 1123. Furthermore, the first recessed surface 1125 and the first guide surface 1124 are located on both sides of the first abutment portion 1123 along the width direction, so that the first abutment portion 1123 protrudes on the surface of the push arm 112 facing the push body 111. The first abutment portion 1123 contacts or separates from the first moving spring 121, so that the first moving spring 121 contacts or separates from the first stationary spring.

[0083] In this way, the contact area between the push arm 112 and the first moving spring 121 can be reduced. The first moving spring 121 only contacts the first abutting part 1123 and does not contact the first recessed surface 1125. This avoids the situation where the contact surface is uneven due to the large contact area, which would lead to the instability of the first moving spring 121. This allows the first moving spring 121 to accurately disengage from the first stationary spring.

[0084] In one embodiment, the first recessed surface 1125 is a plane, an arcuate surface, a plane-plane splicing type, an arcuate surface splicing type, or a plane-arc surface splicing type. It is understood that the shape of the first recessed surface 1125 is not limited in principle, as long as the first recessed surface 1125 does not contact the first movable spring 121. See also... Figure 11 In this embodiment, the first concave surface 1125 is a splicing type of arc-shaped surface and arc-shaped surface.

[0085] See Figures 7 to 10 , Figure 12 In one embodiment, the protrusion 113 also has a second guide surface 1132 on the side facing the pushing body 111. The second guide surface 1132 is located on the side of the second abutment 1131 facing the first abutment 1123 and is inclined to the outside of the protrusion 113. The second guide surface 1132 is used to guide the second moving spring 122 to move into the side of the second abutment 1131. Figure 12 for Figure 8 The enlarged view of the push card 110 at point B is shown.

[0086] The second guide surface 1132 is located on the surface of the protrusion 113 facing the pushing body 111 and corresponds to the opening end of the receiving area 115. The second guide surface 1132 is inclined outwards to increase the size of the opening end of the receiving area 115. When the movable spring portion 120 is assembled, the second movable spring 122 can slide along the second guide surface 1132 to guide the second movable spring 122 into the receiving area 115. With the second guide surface 1132 provided, the movement of the second movable spring 122 is guided, preventing interference between the second movable spring 122 and the protrusion 113, thus facilitating the assembly of the second movable spring 122.

[0087] In one embodiment, the second guide surface 1132 is a guide plane, which guides the second movable spring 122 into the receiving area 115. Of course, in other embodiments of this application, the second guide surface 1132 may also be a guide arc surface, which guides the second movable spring 122 into the receiving area 115.

[0088] See Figures 7 to 10 , Figure 12In one embodiment, the protruding block 113 also has a second recessed surface 1133 on the side facing the pushing body 111. 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 portion of the 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. Furthermore, the second recessed surface 1133 and the second guide surface 1132 are located on both sides of the second abutting portion 1131 along the width direction, so that the second abutting portion 1131 protrudes on the surface of the protruding block 113 facing the pushing body 111. The second abutting portion 1131 contacts or separates from the second moving spring 122, thereby causing the second moving spring 122 to contact or separate from the second stationary spring.

[0090] In this way, the contact area between the protrusion 113 and the second movable spring 122 can be reduced. The second movable spring 122 only contacts the second abutment portion 1131 and does not contact the second recessed surface 1133. This avoids the situation where the contact surface is uneven due to the excessive contact area, which would lead to the instability of the second movable spring 122. This ensures that the second movable spring 122 can accurately disengage from the second stationary spring.

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

[0092] See Figures 7 to 10 , Figure 12 In one embodiment, when the second movable spring 122 contacts the second abutting portion 1131, the second movable spring 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 122 to the protrusion 113 into forces in two directions. The forces in the two directions can combine to form a rotational torque, thereby reducing the second abutting force on the protrusion 113, and further reducing the force on the push arm 112, making the push arm 112 less prone to deformation.

[0093] See Figures 7 to 12In one embodiment, the dimension of the protrusion 113 along the thickness direction of the pushing body 111 is adapted to the dimension of the pushing arm 112 along the thickness direction of the pushing body 111. That is, the thickness dimension of the protrusion 113 is approximately the same as the thickness dimension of the pushing arm 112. This ensures the structural strength of the pushing arm 112 and the protrusion 113, makes the force exerted on the protrusion 113 and the pushing arm 112 approximately the same, and makes the pushing arm 112 less prone to deformation.

[0094] See 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 movable spring 121 through the first abutting surface 11231. That is, the first abutting portion 1123 contacts the first movable spring 121 through surface contact. In this way, the contact area between the first abutting portion 1123 and the first movable spring 121 can be guaranteed, avoiding point contact or line contact that would cause unreliable movement of the first movable spring 121, so that the first movable spring 121 can be accurately separated from the first stationary spring.

[0095] In one embodiment, the first abutting surface 11231 is a plane. The planar nature of the first abutting surface 11231 ensures that the first abutting portion 1123 has a certain contact area with the first movable spring 121, without excessively increasing the contact area with the first movable spring 121, thus improving the reliability of the first movable spring 121 disconnecting. Of course, in other embodiments of this application, the first abutting surface 11231 may also be an arc-shaped surface, a plane-to-plane splicing type, an arc-to-arc surface splicing type, or a plane-to-arc surface splicing type.

[0096] See 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 movable spring 122 through the second abutting surface 11311. That is, the second abutting portion 1131 contacts the second movable spring 122 through surface contact. In this way, the contact area between the second abutting portion 1131 and the second movable spring 122 can be guaranteed, avoiding point contact or line contact that would cause unreliable movement of the second movable spring 122, so that the second movable spring 122 can be accurately separated from the second stationary spring.

[0097] In one embodiment, the second abutment surface 11311 is a plane. The planar nature of the second abutment surface 11311 ensures that the second abutment portion 1131 has a certain contact area with the second movable spring 122, without excessively increasing the contact area with the second movable spring 122, thus improving the reliability of the second movable spring 122 disconnecting. Of course, in other embodiments of this application, the second abutment surface 11311 may also be an arc-shaped surface, a plane-to-plane splicing type, an arc-to-arc surface splicing type, or a plane-to-arc surface splicing type.

[0098] See 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 movable spring 121, and the second cavity 1142 is used to receive the compression spring 125 of the mating 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 movable spring 122 away from the second stationary spring. After the first movable spring 121, the second movable spring 122 and the compression spring 125 are assembled, the bottom of the compression spring 125 extends away from the second movable spring 122.

[0099] When the movable spring portion 120 is installed, the compression spring 125 is located in the first cavity 1141. Pushing the movable spring portion 120 along its width direction causes the second movable spring piece 122 to gradually move to the surface of the push arm 112. The compression spring 125 gradually moves into the second cavity 1142 and aligns with the inner wall of the second cavity 1142. Simultaneously, the first movable spring piece 121 gradually moves into the first cavity 1141. At this time, the first movable spring piece 121 is aligned with the first abutment portion 1123, and the second movable spring piece 122 is aligned with the second abutment portion 1131.

[0100] When the pusher 110 pushes the movable spring portion 120 toward the stationary spring portion 300, the pusher 110 abuts against the compression spring 125 and pushes the compression spring 125 toward the stationary spring portion 300. The compression spring 125 then pushes the first movable spring piece 121 and the second movable spring piece 122 toward the stationary spring portion 300. When the pusher 110 pushes the movable spring portion 120 away from the stationary spring portion 300, the pusher 110 abuts against the second movable spring piece 122 via the second abutting portion 1131 and against the first movable spring piece 121 via the first abutting portion 1123, thereby separating the first movable spring piece 121 from the first stationary spring piece and separating the second movable spring piece 122 from the second stationary spring piece.

[0101] See Figures 8 to 10In one embodiment, the pushing body 111 has a third guide surface 1111 on the side facing the pushing arm 112. The third guide surface 1111 is located at the end of the receiving notch 114 and is inclined outward towards the receiving notch 114. The third guide surface 1111 is used to guide the compression spring 125 of the mating structure 100 into the receiving notch 114. The third guide surface 1111 is located on the broken arm of the pushing body 111 facing the pushing arm 112 and corresponds to the opening end of the receiving notch 114. Furthermore, the third guide surface 1111 is inclined outward to increase the size of the receiving notch 114. When the moving spring portion 120 is assembled, the compression spring 125 can slide along the third guide surface 1111 to guide the compression spring 125 into the second cavity 1142 of the receiving notch 114. After the third guide surface 1111 is provided, the third guide 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] The push card 110 of this application employs a first abutting part 1123 corresponding to a first movable spring 121, and a second abutting part 1131 corresponding to a second movable spring 122, with the first abutting part 1123 and the second abutting part 1131 being staggered along the thickness direction of the push card 110. In this way, the first abutting force applied by the first movable spring 121 to the first abutting part 1123 and the second abutting force applied by the second movable spring 122 to the second abutting part 1131 are staggered along the thickness direction of the push body, preventing the first and second abutting forces from acting on the same lever arm. This makes the push arm 112 less prone to deformation, allowing the push arm 112 to accurately push the first movable spring 121 and the second movable spring 122, achieving reliable disconnection and reducing safety hazards.

[0103] Furthermore, this application defines the receiving area 115 for accommodating the second movable spring 122 to the surface of the push arm 112, preventing the second movable spring 122 from contacting the push arm 112 during the assembly of the movable spring portion 120, thereby avoiding scratches and facilitating the assembly of the movable spring portion 120. Simultaneously, a first guide surface 1124, a second guide surface 1132, and a third guide surface 1111 are provided to guide the assembly of the movable spring portion 120, further facilitating its assembly.

[0104] Furthermore, the first abutment portion 1123 is positioned away from the first moving spring 121, while the second abutment portion 1131 is positioned close to the second moving spring 122. This results in a longer travel distance when the first moving contact 123 disconnects and a shorter travel distance when the second moving contact 124 disconnects. In this way, the second moving spring 122 and the first moving spring 121 disconnect one after the other, allowing the contact erosion phenomenon to be completely left to the first moving spring 121, which disconnects later. This effectively protects the second moving contact 124 of the second moving spring 122 from erosion, achieving the purpose of stabilizing the contact resistance.

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

[0106] After the mating structure 100 of this application adopts the push card 110 of the above embodiment, it can enable the push card 110 to accurately drive the first moving spring 121 and the second moving spring 122 to move, minimize the deformation of the push card 110, give the push card 110 a higher process control capability, and enable the moving spring part 120 to accurately separate from the stationary spring part 300.

[0107] See Figure 6 , Figure 7 and Figure 13 In one embodiment, the length of the first movable spring 121 is greater than the length of the second movable spring 122. Figure 13 for Figure 6 The diagram shows the movable spring portion 120. That is, the dimension of the first movable spring 121 along the height direction of the push plate 110 is larger than the dimension of the second movable spring 122 along the height direction of the push plate 110.

[0108] In this way, after the movable spring part 120 is assembled with the push card 110, the first movable spring 121 can extend into the receiving notch 114, and the second movable spring 122 can avoid contact with the push arm 112, thus avoiding interference between the second movable spring 122 and the push arm 112 and ensuring the accuracy of the movement of the second movable spring 122.

[0109] See Figure 6 , Figure 7 and Figure 13 In one embodiment, the diameter of the first moving contact 123 is larger than the diameter of the second moving contact 124. That is, 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 larger than the diameter of the second moving contact 124. This reduces the resistance of the electrical connection between the first moving contact 123 and the first stationary contact, which is beneficial for high current transmission.

[0110] See Figures 1 to 4This application also provides an electromagnetic relay 10, including an electromagnetic drive structure 200, a stationary spring portion 300, and a mating structure 100 as described in any of the above embodiments. The electromagnetic drive structure 200 drives a pusher 110 in the mating structure 100 to move, causing the pusher 110 to bring the moving spring portion 120 in the mating structure 100 into contact with or separate from the stationary spring portion 300. After adopting the mating structure 100 of the above embodiments, the electromagnetic relay 10 of this application enables the pusher 110 to accurately drive the first moving spring 121 and the second moving spring 122 to move, minimizing the deformation of the pusher 110, giving the pusher 110 higher process control capability, and ensuring that the moving spring portion 120 accurately separates from the stationary spring portion 300.

[0111] 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.

[0112] 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 push card, characterized in that The pusher, which is used in the mating structure of an electromagnetic relay and engages with the first and second moving springs of the mating structure, includes: The driving force; A push arm, with a first end connected to the push body and a second end separated from the push body, such that the push arm and the push body form a receiving notch for accommodating the first movable spring; the push arm has a first abutting portion located in the receiving notch, the first abutting portion being opposite to the first movable spring and capable of abutting or disengaging from the first movable spring; and A protruding block is provided on one surface of the push arm. The protruding block has a second abutting portion on the side facing the push body. The second abutting portion is opposite to the second movable spring and can abut against or disengage from the second movable spring. The first abutting part and the second abutting part are offset from each other along the thickness direction of the pushing body.

2. The push card of claim 1, wherein, The protruding block and the surface of the push arm form a receiving area to accommodate the second movable spring, and there is a preset distance between the second movable spring and the surface of the push arm.

3. The push card of claim 1, wherein, The push arm also has a first guide surface on the side facing the push body. The first guide surface is located on the side of the first abutment portion away from the protrusion and is inclined towards the outside of the receiving notch. The first guide surface is used to guide the first moving spring to move into the receiving notch. And / or, the push arm has a first recessed surface on the side facing the push body, the first recessed surface being located on the side of the first abutment portion facing the protrusion block and recessed within the first abutment portion, so that the first abutment portion protrudes from the surface of the push arm facing the push body.

4. The push card of claim 1, wherein, The protruding block also has a second guide surface on the side facing the pushing body. The second guide surface is located on the side of the second abutment facing the first abutment and is inclined towards the outside of the protruding block. The second guide surface is used to guide the second moving spring to move into the side of the second abutment. And / or, the protruding block has a second recessed surface on the side facing the pushing body, the second recessed surface being located on the side of the second abutting portion away from the first abutting portion and recessed within the second abutting portion, so that the second abutting portion protrudes from the surface of the protruding block facing the pushing body.

5. The push card of claim 1, wherein, The first abutting part has a first abutting surface, and the first abutting part contacts the first movable spring 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 through the second abutting surface.

6. The push card of any one of claims 1 to 5, wherein, The distance between the first abutting part and the first movable spring is greater than the distance between the second abutting part and the second movable spring; And / or, the dimension of the protrusion along the thickness direction of the pushing body is adapted to the dimension of the pushing arm along the thickness direction of the pushing body.

7. The push card of any one of claims 1 to 5, wherein, The receiving notch includes a first cavity and a second cavity that are connected. The first cavity is used to receive the first movable spring, and the second cavity is used to receive the compression spring of the mating structure. And / or, the pushing body has a third guide surface on the side facing the pushing arm, the third guide surface being located at the end of the receiving notch and inclined toward the outside of the receiving notch, the third guide surface being used to guide the compression spring of the mating structure into the receiving notch.

8. A fitting structure characterized by, Includes a movable spring portion and a pusher as described in any one of claims 1 to 7; The movable spring portion includes a first movable spring sheet, a first movable contact disposed on the first movable spring sheet, a second movable spring sheet, and a second movable contact disposed on the second movable spring sheet. The first movable spring sheet is located in the receiving notch of the push card and is opposite to the first abutting part of the push card. The second movable spring sheet is opposite to the second abutting part of the push card.

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

10. An electromagnetic relay, characterized by It includes an electromagnetic drive structure, a stationary spring portion, and a mating structure as described in any one of claims 8 or 9, wherein the electromagnetic drive structure drives the pusher in the mating structure to move, causing the pusher to bring the moving spring portion in the mating structure into contact with or separate from the stationary spring portion.

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