A relay and an electric meter
By employing a rigid moving spring structure with a bent portion forming a clearance groove in the relay, the problem of the large space occupied by the rigid moving spring is solved, thus achieving miniaturization of the relay and a compact design in the meter.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUEQING DELIAN ELECTRON TECH
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-21
AI Technical Summary
Existing rigid spring relays occupy a large space in miniaturized meters, making them difficult to apply.
The bent part of the rigid moving spring is located between the body and the rod of the push card, forming a clearance groove to reduce the overall size of the push card and the rigid moving spring, and the connection and disconnection of the circuit is realized by the sliding of the push card.
This has enabled the miniaturization of relays, expanding their application range, especially in the more compact structural design of electricity meters.
Smart Images
Figure CN224537003U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical control device technology, and in particular to a relay and an electricity meter. Background Technology
[0002] A relay is a widely used electrical control device, applied in home appliances, automobiles, industrial control, power systems, communication devices, and other fields. A relay typically consists of components such as a moving spring, a stationary spring, a magnetic circuit assembly, and a pusher. The magnetic circuit assembly and the pusher form a push system that moves the moving spring closer to or away from the stationary spring, causing the moving spring to contact or separate from the stationary spring, thereby connecting or disconnecting the circuit.
[0003] There are two main types of moving springs: spring-loaded and rigid moving springs. Rigid moving springs generally adopt a flat plate structure, and their thickness is several times that of spring-loaded moving springs. When combined with the push card, their overall size is larger, which occupies more space and makes them difficult to use in some meters that require smaller relays. Utility Model Content
[0004] In order to solve the problems existing in the prior art, one of the objectives of this utility model is to provide a relay.
[0005] This utility model provides the following technical solution:
[0006] A relay, comprising:
[0007] shell;
[0008] A push card, which is slidably disposed on the housing, the push card includes a body and a rod connected to each other, the body and the rod being arranged at intervals along the sliding direction of the push card;
[0009] A rigid dynamic spring, rotatably mounted on the housing, includes a bent portion located between the body and the rod portion, bent in a direction away from the rod portion, and a clearance groove formed on the side of the bent portion facing the rod portion, with the rod portion located within the clearance groove; and
[0010] A stationary spring is disposed on the housing and is located on the side of the moving spring facing away from the main body.
[0011] As a further optional solution for the relay, the push card also includes a connecting part, through which the body is connected to the rod;
[0012] The main body, the connecting part, and the rod part are integrally formed; or
[0013] One end of the connecting part is connected to the body, and the other end of the connecting part has a through hole, into which the rod is inserted.
[0014] As a further optional solution for the relay, a hinge seat is provided on the rigid moving spring, and a hinge shaft passes through the hinge seat, with both ends of the hinge shaft being rotatably connected to the housing.
[0015] Alternatively, the relay may further include a pressure plate that is detachably coupled to the housing, a hinge seat is provided on the rigid spring, a hinge shaft passes through the hinge seat, one end of the hinge shaft is rotatably connected to the housing, and the other end is rotatably connected to the pressure plate.
[0016] As a further alternative to the relay, at least two rigid moving springs are provided, and the at least two rigid moving springs are arranged along the rotation axis direction of the rigid moving springs;
[0017] The rod extends along the rotation axis of the rigid moving spring and is located within the clearance groove of the at least two rigid moving springs.
[0018] As a further optional feature of the relay, the relay may also include a moving magnetic component and a stationary magnetic component;
[0019] The moving magnetic conductor is disposed on the rigid moving spring, and at least a portion of the moving magnetic conductor is located on the side of the rigid moving spring facing away from the stationary spring;
[0020] The static magnetic conductor is disposed on the housing and is located on the side of the rigid dynamic spring facing the static spring. The static magnetic conductor includes at least two first static magnetic assemblies, and the arrangement direction of the at least two first static magnetic assemblies is perpendicular to the rotation axis direction of the rigid dynamic spring.
[0021] As a further optional solution for the relay, the housing is provided with a first receiving groove, the opening of the first receiving groove is oriented toward the moving magnetic component, and the side wall of the first receiving groove is provided with a first slot.
[0022] The static magnetic conductor is disposed in the first receiving groove, and the static magnetic conductor is provided with a first protrusion, which is inserted into the first slot.
[0023] As a further optional embodiment of the relay, the relay further includes a coil assembly, an armature assembly, a moving spring terminal, and a stationary spring terminal disposed in the housing, wherein the coil assembly and the armature assembly are magnetically engaged, the armature assembly is connected to the push card, the moving spring terminal is electrically connected to the rigid moving spring, and the stationary spring terminal is electrically connected to the stationary spring.
[0024] The relay has a first direction, a second direction, and a third direction that are perpendicular to each other. The first direction is parallel to the sliding direction of the push card. The coil assembly, the armature assembly, and the push card are all located on one side of the rigid moving spring along the first direction and arranged along the second direction. The length direction of the coil assembly is parallel to the first direction. The moving spring terminal and the stationary spring terminal are both inserted through the housing and extended along the first direction.
[0025] As a further optional embodiment of the relay, the relay also includes an arc-extinguishing shield disposed in the housing, wherein the contact points of the rigid moving spring and the stationary spring are adjacent to the arc-extinguishing shield.
[0026] As a further optional solution for the relay, the housing is provided with a second receiving groove, the opening of the second receiving groove is provided facing the contact point of the rigid moving spring and the stationary spring, and the side wall of the second receiving groove is provided with a second slot.
[0027] The arc-extinguishing cover is disposed in the second receiving groove, and the arc-extinguishing cover is provided with a second protrusion, which is inserted into the second slot along a third direction.
[0028] Another objective of this invention is to provide an electricity meter.
[0029] This utility model provides the following technical solution:
[0030] An electricity meter, comprising the aforementioned relay.
[0031] The embodiments of this utility model have the following beneficial effects:
[0032] In the aforementioned relay, the body and rod of the push card are arranged at intervals along their sliding direction, and the bent portion of the rigid moving spring is located between the body and the rod. When the push card slides towards the stationary spring, the body of the push card presses against the rigid moving spring, driving the rigid moving spring to rotate towards the stationary spring, making contact between the rigid moving spring and the stationary spring, thus connecting the circuit. When the push card slides away from the stationary spring, the rod of the push card pulls the rigid moving spring, driving the rigid moving spring to rotate away from the stationary spring, thus separating the rigid moving spring from the stationary spring, thus disconnecting the circuit. Because the rod of the push card can be accommodated in the clearance groove formed by the bending of the bent portion, the overall size of the push card and the rigid moving spring can be reduced, occupying less space, which is beneficial for the miniaturization of the aforementioned relay and expands the application range of the aforementioned relay.
[0033] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0034] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0035] Figure 1 This diagram illustrates the internal structure of a relay according to an embodiment of the present invention.
[0036] Figure 2 This diagram illustrates the cooperation relationship between the push card and the rigid moving spring in a relay according to an embodiment of the present invention.
[0037] Figure 3 An exploded view of a relay provided in an embodiment of the present invention is shown;
[0038] Figure 4 This diagram illustrates the cooperation relationship between the push card, the rigid moving spring, and the stationary spring in a relay provided by an embodiment of the present invention.
[0039] Figure 5 This diagram illustrates the connection relationship between a rigid moving spring and a housing in a relay according to an embodiment of the present invention.
[0040] Figure 6 This diagram illustrates the cooperation relationship between a rigid moving spring, a moving magnetic component, and a stationary magnetic component in a relay according to an embodiment of the present invention.
[0041] Figure 7 This diagram illustrates the connection relationship between the static magnetic component and the housing in a relay according to an embodiment of the present invention.
[0042] Figure 8 This diagram illustrates the structure of a stationary magnetic component in a relay according to another embodiment of the present invention.
[0043] Figure 9 This diagram illustrates the structure of a stationary magnetic component in a relay according to another embodiment of the present invention.
[0044] Figure 10 This diagram illustrates the connection between the arc-extinguishing cover and the outer casing in a relay according to an embodiment of the present invention.
[0045] Explanation of key component symbols:
[0046] 100 - Housing; 110 - Base; 120 - Upper seat; 130 - Pressure plate; 140 - First receiving groove; 141 - First slot; 150 - Second receiving groove; 151 - Second slot; 200 - Push card; 210 - Body; 220 - Rod; 230 - Groove; 240 - Connecting part; 300 - Rigid moving spring; 310 - Bending part; 320 - Clearance groove; 330 - Moving spring terminal; 331 - Pin; 340 - Moving contact; 350 - Flexible conductor; 360 - Spring Spring element; 370-Hinge seat; 380-Hinge shaft; 400-Stationary spring; 410-Stationary spring terminal; 500-Coil assembly; 600-Armature assembly; 610-Swing arm; 700-Moving magnetic conductor; 800-Stationary magnetic conductor; 801-First protrusion; 810-First static magnetic conductor assembly; 820-Second static magnetic conductor assembly; 900-Arc extinguishing cover; 901-Second protrusion; 910-Mounting piece; 920-Grid plate; X-First direction; Y-Second direction; Z-Third direction. Detailed Implementation
[0047] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0048] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0049] In this utility model, unless otherwise explicitly 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0050] In addition, the terms "first" and "second" are used 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 one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.
[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used in the description of the template herein are for the purpose of describing specific embodiments only and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0052] Embodiment
[0053] Please refer to Figure 1 and Figure 2 , this embodiment provides a relay, which includes a housing 100, a push card 200, a rigid moving contact 300 and a static contact 400.
[0054] Among them, the push card 200 is slidably arranged in the housing 100. The push card 200 includes a body 210 and a rod portion 220 which are connected to each other, and the body 210 and the rod portion 220 are arranged at intervals along the sliding direction of the push card 200.
[0055] The rigid moving contact 300 is rotatably arranged in the housing 100, and the rigid moving contact 300 includes a bending portion 310. The bending portion 310 is located between the body 210 and the rod portion 220 and is bent in a direction away from the rod portion 220. An avoidance groove 320 is formed on the side of the bending portion 310 facing the rod portion 220, and the rod portion 220 is located in the avoidance groove 320.
[0056] That is to say, the rigid moving contact 300 passes through between the body 210 and the rod portion 220, and the part of the rigid moving contact 300 located between the body 210 and the rod portion 220 is bent in a direction away from the rod portion 220 to form the bending portion 310 and the avoidance groove 320.
[0057] Here, the overall shape of the rigid moving contact 300 near the bending portion 310 is in a "U" shape, and of course, it can also be in an "L" shape.
[0058] In addition, the static contact 400 is arranged in the housing 100, and the static contact 400 is located on the side of the moving contact away from the body 210.
[0059] In the aforementioned relay, the body 210 and the rod 220 of the push card 200 are arranged at intervals along their sliding direction, and the bent portion 310 of the rigid moving spring 300 is located between the body 210 and the rod 220. When the push card 200 slides towards the stationary spring 400, the body 210 of the push card 200 presses against the rigid moving spring 300, driving the rigid moving spring 300 to rotate towards the stationary spring 400, so that the rigid moving spring 300 contacts the stationary spring 400, thus connecting the circuit. When the push card 200 slides away from the stationary spring 400, the rod 220 of the push card 200 pulls the rigid moving spring 300, driving the rigid moving spring 300 to rotate away from the stationary spring 400, so that the rigid moving spring 300 separates from the stationary spring 400, thus disconnecting the circuit. Since the rod portion 220 of the push card 200 can be accommodated in the clearance groove 320 formed by the bending portion 310, the overall size of the push card 200 and the rigid moving spring 300 can be reduced, occupying less space, which is conducive to the miniaturization of the relay and expands the application range of the relay.
[0060] Please refer to the following: Figure 1 and Figure 3 In some embodiments, the relay further includes a coil assembly 500, an armature assembly 600, a moving spring terminal 330, and a stationary spring terminal 410 disposed in the housing 100. Understandably, the coil assembly 500, the moving spring terminal 330, and the stationary spring terminal 410 are all fixedly connected to the housing 100, the armature assembly 600 is rotatably connected to the housing 100, and the rotation axis of the armature assembly 600 is perpendicular to the sliding direction of the push card 200.
[0061] Furthermore, the coil assembly 500 and the armature assembly 600 are magnetically coupled, and the armature assembly 600 is connected to the pusher 200. The moving spring terminal 330 is electrically connected to the rigid moving spring 300, and the stationary spring terminal 410 is electrically connected to the stationary spring 400. Here, the moving spring terminal 330 and the rigid moving spring 300 are electrically connected using a flexible connection; however, a rigid connection can also be used. The stationary spring terminal 410 and the stationary spring 400 are electrically connected using an integral structure; alternatively, they can be separately formed, using either a flexible or rigid connection to form an electrical connection.
[0062] In use, the aforementioned relay is connected to an external circuit via the moving spring terminal 330 and the stationary spring terminal 410. Based on this, energizing the coil assembly 500 causes the armature assembly 600 to oscillate under the magnetic force of the coil assembly 500 (i.e., the magnetic interaction between the two), thereby driving the push card 200 to slide and controlling the on / off state of the circuit containing the relay. Different energizing directions of the coil assembly 500 result in different oscillation directions of the armature assembly 600, thus driving the push card 200 to slide in different directions.
[0063] In some embodiments, the relay has a first direction X, a second direction Y, and a third direction Z that are perpendicular to each other, and the first direction X is parallel to the sliding direction of the push card 200.
[0064] The coil assembly 500, armature assembly 600, and pusher 200 are all located on one side of the rigid moving spring 300 along the first direction X and arranged along the second direction Y. The length direction of the coil assembly 500 is parallel to the first direction X. The moving spring terminal 330 and the stationary spring terminal 410 are both inserted through the housing 100 and extend along the first direction X.
[0065] Therefore, the above-mentioned relay has a compact structure and a smaller size.
[0066] In this embodiment, the housing 100 includes a base 110 and an upper seat 120. The base 110 and the upper seat 120 are arranged along the third direction Z, and the base 110 and the upper seat 120 are snapped together.
[0067] When assembling the above relay, first install the coil assembly 500, armature assembly 600, push card 200, rigid moving spring 300, stationary spring 400, moving spring terminal 330 and stationary spring terminal 410 on the base 110, and then close the upper seat 120.
[0068] In this embodiment, the rotation axis of the armature assembly 600 is parallel to the third direction Z. The armature assembly 600 is provided with a swing arm 610, and the push card 200 is provided with a corresponding groove 230. The end of the swing arm 610 is cylindrical and is inserted into the groove 230.
[0069] When the armature assembly 600 swings due to the magnetic force of the coil assembly 500, the swing arm 610 pushes the push card 200, thereby driving the push card 200 to slide.
[0070] Please see Figure 4 In this embodiment, one end of the rigid moving spring 300 is provided with a moving contact 340, and the other end of the rigid moving spring 300 is electrically connected to the moving spring terminal 330 through a flexible conductor 350.
[0071] The moving contact 340 is riveted or welded to the rigid moving spring 300, and the moving contact 340 and the stationary spring 400 are generally aligned along the first direction X. Correspondingly, the stationary spring 400 also has a corresponding contact.
[0072] When the push card 200 slides in the direction close to the stationary spring 400, the body 210 of the push card 200 presses against the rigid moving spring 300, driving the rigid moving spring 300 to rotate toward the stationary spring 400, so that the moving contact 340 contacts the stationary spring 400, thereby realizing the connection of the circuit.
[0073] For example, the flexible conductor 350 may be a soft wire and its braid.
[0074] Furthermore, a spring member 360 is also provided on the rigid moving spring 300. One end of the spring member 360 is fixedly connected to the rigid moving spring 300, and the other end of the spring member 360 is located between the body 210 of the push card 200 and the rigid moving spring 300.
[0075] When the push card 200 slides towards the stationary spring 400, the body 210 of the push card 200 presses against the rigid moving spring 300 through the spring member 360, driving the rigid moving spring 300 to rotate toward the stationary spring 400. When the moving contact 340 contacts the stationary spring 400, the spring member 360 is in a state of elastic deformation, providing contact pressure.
[0076] For example, the spring member 360 can be a spring sheet or a compression spring. In addition, the spring member 360 is riveted and fixed to the rigid moving spring 300 together with the moving contact 340, or the spring member 360 can be riveted and fixed separately to the rigid moving spring 300.
[0077] In this embodiment, both the moving spring terminal 330 and the stationary spring terminal 410 located outside the housing 100 are provided with pins 331. The pins 331 extend in the third direction Z for connecting to external circuits.
[0078] Please refer to it again. Figure 2 In some embodiments, the push card 200 further includes a connecting portion 240, through which the body 210 is connected to the rod portion 220. Understandably, the body 210, the connecting portion 240, and the rod portion 220 are arranged sequentially along a first direction X, such that the body 210 and the rod portion 220 are spaced apart along the first direction X, so that the rigid moving spring 300 passes between the body 210 and the rod portion 220.
[0079] In this embodiment, the body 210, the connecting part 240, and the rod part 220 are integrally formed.
[0080] In another embodiment of this application, one end of the connecting part 240 is connected to the body 210, and the other end of the connecting part 240 is provided with a through hole, into which the rod part 220 is inserted.
[0081] For example, the connecting part 240 adopts a lug, and the connecting parts 240 are arranged in pairs on both sides of the body 210. The two ends of the rod 220 pass through the through holes on the two connecting parts 240 respectively, and are interference-fitted with the hole walls.
[0082] Please refer to the following: Figure 4 and Figure 5In some embodiments, a hinge seat 370 is provided on the rigid moving spring 300, and a hinge shaft 380 is passed through the hinge seat 370. Both ends of the hinge shaft 380 are rotatably connected to the housing 100, thereby allowing the rigid moving spring 300 to be rotatably mounted on the housing 100.
[0083] For example, the hinge seat 370 is riveted, bolted, or welded to the rigid moving spring 300.
[0084] Alternatively, the hinge seat 370 can be integrally formed with the rigid moving spring 300. For example, an ear can be machined into the end of the rigid moving spring 300 away from the stationary spring 400 and bent to serve as the hinge seat 370.
[0085] For example, one end of the hinge shaft 380 is inserted into the base 110, and the other end of the hinge shaft 380 is inserted into the upper seat 120.
[0086] In some embodiments, the relay further includes a pressure plate 130 that is detachably coupled to the housing 100. A hinge seat 370 is provided on the rigid spring 300, and a hinge shaft 380 passes through the hinge seat 370. One end of the hinge shaft 380 is rotatably connected to the housing 100, and the other end is rotatably connected to the pressure plate 130, thereby allowing the rigid spring 300 to be rotatably mounted on the housing 100.
[0087] For example, one end of the hinge shaft 380 is inserted into the housing 100, specifically into the base 110, and the other end of the hinge shaft 380 is inserted into the pressure plate 130. The pressure plate 130 is fixed to the base 110 by insertion or by screws. During assembly, the rigid moving spring 300, the hinge seat 370, and the hinge shaft 380 are first installed on the base 110. Then, the pressure plate 130 is closed and fixed to the base 110. Finally, the upper seat 120 is closed.
[0088] In this embodiment, the axial direction of the hinge shaft 380 is parallel to the third direction Z. In other words, the rotation axis of the rigid moving spring 300 is parallel to the third direction Z.
[0089] In some embodiments, at least two rigid moving springs 300 are provided, and the at least two rigid moving springs 300 are arranged along the rotation axis direction of the rigid moving springs 300.
[0090] Accordingly, the rod portion 220 extends along the rotation axis of the rigid moving spring 300 and is located within the clearance grooves 320 of at least two rigid moving springs 300.
[0091] When in use, the main body 210 of the push card 200 simultaneously presses against each rigid moving spring 300, causing each rigid moving spring 300 to rotate synchronously toward the stationary spring 400, so that the moving contacts 340 on each rigid moving spring 300 contact the stationary spring 400 respectively, which can better ensure the circuit connection.
[0092] For example, there are two rigid moving springs 300. In addition, the stationary spring 400 also has two stationary contacts, which correspond to the moving contacts 340 on the two rigid moving springs 300 respectively.
[0093] Please refer to the following: Figure 1 and Figure 6 In some embodiments, the relay further includes a moving magnetic element 700 and a stationary magnetic element 800.
[0094] The moving magnetic conductor 700 is disposed on the rigid moving spring 300. At least a portion of the moving magnetic conductor 700 is located on the side of the rigid moving spring 300 facing away from the stationary spring 400.
[0095] In addition, a static magnetic conductor 800 is disposed in the housing 100, and the static magnetic conductor 800 is located on the side of the rigid moving spring 300 facing the static spring 400.
[0096] When the rigid moving spring 300 and the stationary spring 400 are in contact and conducting, current flows through the rigid moving spring 300, thereby generating an induced magnetic field around the rigid moving spring 300. The moving magnetic component 700 and the stationary magnetic component 800 located within this induced magnetic field are magnetized, thereby attracting each other, which helps the rigid moving spring 300 and the stationary spring 400 to remain stably in contact.
[0097] It should be noted that the moving magnetic component 700 avoids the rigid moving spring 300 facing the stationary spring 400 on the side that is not in contact with the moving magnetic component 700. This avoids the formation of a closed magnetic circuit within the moving magnetic component 700, that is, it prevents the induced magnetic field on the side of the rigid moving spring 300 facing the stationary spring 400 from being concentrated inside the moving magnetic component 700, thereby ensuring the magnetization of the stationary magnetic component 800 by the induced magnetic field.
[0098] In this embodiment, the moving magnetic component 700 and the rigid moving spring 300 are fixed by riveting, screw fastening, or welding.
[0099] For example, the moving magnetic conductor 700 can adopt a flat plate structure. In this case, the entire moving magnetic conductor 700 is located on the side of the rigid moving spring 300 facing away from the stationary spring 400.
[0100] Alternatively, the moving magnetic element 700 may be L-shaped, having a flange extending to the side of the rigid moving spring 300. Here, the side refers to the other surfaces of the rigid moving spring 300 except for the side facing away from the stationary spring 400 and the side facing the stationary spring 400.
[0101] Alternatively, the moving magnetic element 700 can also be U-shaped, with two flanges extending to both sides of the rigid moving spring 300.
[0102] Specifically, the static magnetic component 800 includes at least two first static magnetic components 810, and the arrangement direction of the at least two first static magnetic components 810 is perpendicular to the rotation axis direction of the rigid moving spring 300, which can reduce eddy current losses.
[0103] Optionally, the number of the first static magnetic conductive components 810 is three.
[0104] Please see Figure 7 In some embodiments, the outer casing 100 is provided with a first receiving groove 140, specifically the base 110 is provided with a first receiving groove 140. The opening of the first receiving groove 140 is oriented toward the moving magnetic component 700, and the side wall of the first receiving groove 140 is provided with a first slot 141.
[0105] Correspondingly, a static magnetic conductor 800 is disposed in the first receiving groove 140. The static magnetic conductor 800 is provided with a first protrusion 801, which is inserted into the first slot 141.
[0106] Understandably, the first protrusion 801 cooperates with the first slot 141 to prevent the static magnetic component 800 from coming out of the slot of the first receiving groove 140 and to provide support for the static magnetic component 800 to attract the dynamic magnetic component 700.
[0107] For example, the static magnetic component 800 includes at least two first static magnetic components 810 and one second static magnetic component 820, with each first static magnetic component 810 riveted to the second static magnetic component 820. The second static magnetic component 820 extends along the arrangement direction of the first static magnetic components 810, and the length of the second static magnetic component 820 is greater than the total length of the stacked first static magnetic components 810. In this case, both ends of the second static magnetic component 820 protrude from the first static magnetic components 810 along its length, serving as first protrusions 801.
[0108] Alternatively, the static magnetic component 800 may include only two or more first static magnetic assemblies 810, which are riveted together. Along the arrangement direction of the first static magnetic assemblies 810, each of the two first static magnetic assemblies 810 located at both ends has an integrally formed protrusion. This protrusion may be formed at the end of the corresponding first static magnetic assembly 810 away from the moving magnetic component 700, serving as a first protrusion 801 (see [reference]). Figure 8 Alternatively, it can be formed at both ends of the corresponding first static magnetic component 810, with the protrusion at a greater distance from the moving magnetic component 700 serving as the first protrusion 801 (see [reference]). Figure 9 ).
[0109] Please refer to the following: Figure 1 and Figure 10 In some embodiments, the relay further includes an arc-extinguishing cover 900 disposed in the housing 100. The contact points of the rigid moving spring 300 and the stationary spring 400 are adjacent to the arc-extinguishing cover 900, specifically adjacent to the moving contact 340 and the stationary spring 400.
[0110] When in use, the arc extinguishing cover 900 can extinguish the electric arc when the rigid moving spring 300 and the stationary spring 400 are disconnected.
[0111] In this embodiment, the arc extinguishing cover 900 includes a mounting plate 910 and a plurality of grid plates 920. The mounting plate 910 is connected to the outer shell 100, and each grid plate 920 is fixed on the mounting plate 910 and serves to extinguish the arc.
[0112] In another embodiment of this application, the arc extinguishing chamber 900 may also be a U-shaped arc extinguishing chamber 900, the structure of which is similar to the arc extinguishing chamber of a miniature circuit breaker.
[0113] Understandably, the outer casing 100 is provided with a gap near the arc extinguishing chamber 900 to allow the gas generated during arc extinguishing to escape.
[0114] In some embodiments, the housing 100 is provided with a second receiving groove 150, specifically the base 110 is provided with a second receiving groove 150. The opening of the second receiving groove 150 is provided toward the contact point of the rigid moving spring 300 and the stationary spring 400, and the side wall of the second receiving groove 150 is provided with a second slot 151.
[0115] Accordingly, the arc-extinguishing cover 900 is disposed in the second receiving groove 150. The arc-extinguishing cover 900 is provided with a second protrusion 901, which is inserted into the second slot 151 along the third direction Z.
[0116] At this time, the arc extinguishing cover 900 is limited by the second slot 151 along both the first direction X and the second direction Y.
[0117] In this embodiment, each grid plate 920 is arranged along the first direction X, and the two ends of the mounting plate 910 along the first direction X are not fixed by the grid plates 920, serving as the second protrusion 901.
[0118] In summary, in the above-mentioned relay, the rigid moving spring 300 located between the body 210 and the rod portion 220 is bent in a direction away from the rod portion 220 to form a bent portion 310 and a relief groove 320. This allows the rod portion 220 of the push card 200 to be accommodated in the relief groove 320 formed by the bending of the bent portion 310. Therefore, the overall size of the push card 200 and the rigid moving spring 300 is reduced, occupying less space, which is beneficial to the miniaturization of the above-mentioned relay and expands the application range of the above-mentioned relay.
[0119] This embodiment also provides an electricity meter, including the aforementioned relay.
[0120] In all examples shown and described herein, any specific values should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.
[0121] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0122] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A relay, characterized in that, include: shell; A push card, which is slidably disposed on the housing, the push card includes a body and a rod connected to each other, the body and the rod being arranged at intervals along the sliding direction of the push card; A rigid dynamic spring, rotatably mounted on the housing, includes a bent portion located between the body and the rod portion, bent in a direction away from the rod portion, and a clearance groove formed on the side of the bent portion facing the rod portion, with the rod portion located within the clearance groove; and A stationary spring is disposed on the housing and is located on the side of the moving spring facing away from the main body.
2. The relay according to claim 1, characterized in that, The push card also includes a connecting part, through which the main body is connected to the rod part; The main body, the connecting part, and the rod part are integrally formed; or One end of the connecting part is connected to the body, and the other end of the connecting part has a through hole, into which the rod is inserted.
3. The relay according to claim 1, characterized in that, The rigid spring is provided with a hinge seat, and a hinge shaft is passed through the hinge seat. Both ends of the hinge shaft are rotatably connected to the outer shell. Alternatively, the relay may further include a pressure plate that is detachably coupled to the housing, a hinge seat is provided on the rigid spring, a hinge shaft passes through the hinge seat, one end of the hinge shaft is rotatably connected to the housing, and the other end is rotatably connected to the pressure plate.
4. The relay according to claim 1, characterized in that, At least two rigid moving springs are provided, and the at least two rigid moving springs are arranged along the rotation axis of the rigid moving spring; The rod extends along the rotation axis of the rigid moving spring and is located within the clearance groove of the at least two rigid moving springs.
5. The relay according to claim 1, characterized in that, The relay also includes a moving magnetic component and a stationary magnetic component; The moving magnetic conductor is disposed on the rigid moving spring, and at least a portion of the moving magnetic conductor is located on the side of the rigid moving spring facing away from the stationary spring; The static magnetic conductor is disposed on the housing and is located on the side of the rigid dynamic spring facing the static spring. The static magnetic conductor includes at least two first static magnetic assemblies, and the arrangement direction of the at least two first static magnetic assemblies is perpendicular to the rotation axis direction of the rigid dynamic spring.
6. The relay according to claim 5, characterized in that, The outer shell is provided with a first receiving groove, the opening of the first receiving groove is oriented toward the moving magnetic component, and the side wall of the first receiving groove is provided with a first slot. The static magnetic conductor is disposed in the first receiving groove, and the static magnetic conductor is provided with a first protrusion, which is inserted into the first slot.
7. The relay according to any one of claims 1-6, characterized in that, The relay also includes a coil assembly, an armature assembly, a moving spring terminal, and a stationary spring terminal disposed in the housing. The coil assembly and the armature assembly are magnetically coupled. The armature assembly is connected to the push card. The moving spring terminal is electrically connected to the rigid moving spring. The stationary spring terminal is electrically connected to the stationary spring. The relay has a first direction, a second direction, and a third direction that are perpendicular to each other. The first direction is parallel to the sliding direction of the push card. The coil assembly, the armature assembly, and the push card are all located on one side of the rigid moving spring along the first direction and arranged along the second direction. The length direction of the coil assembly is parallel to the first direction. The moving spring terminal and the stationary spring terminal are both inserted through the housing and extended along the first direction.
8. The relay according to claim 1, characterized in that, The relay also includes an arc-extinguishing cover, which is disposed in the housing, and the contact points of the rigid moving spring and the stationary spring are adjacent to the arc-extinguishing cover.
9. The relay according to claim 8, characterized in that, The outer casing is provided with a second receiving groove, the opening of the second receiving groove is provided facing the contact point of the rigid moving spring and the stationary spring, and the side wall of the second receiving groove is provided with a second slot. The arc-extinguishing cover is disposed in the second receiving groove, and the arc-extinguishing cover is provided with a second protrusion, which is inserted into the second slot along a third direction.
10. An electricity meter, characterized in that, The relay includes any one of claims 1-9.