snap action relay

Abstract

The application relates to a snap-action relay. The snap-action relay comprises an armature assembly, a moving spring, a second connecting piece and a stationary spring. The armature assembly comprises an armature and a first connecting piece arranged on the armature; the moving spring is provided with a moving contact; the second connecting piece is arranged on the moving spring and connected to the first connecting piece; the stationary spring is provided with a stationary contact opposite to the moving contact; wherein the armature assembly is used to drive the moving spring to move relative to the stationary spring, so that the moving contact and the stationary contact relatively approach or move away from each other. The above snap-action relay can effectively simplify the assembly process of the snap-action relay, improve the production efficiency, and is also beneficial to reducing the preparation cost of the snap-action relay.

Description

Technical Field

[0001] This application relates to the field of snap-action relay technology, and in particular to a snap-action relay. Background Technology

[0002] A snap-action relay typically includes components such as a coil assembly, an armature assembly, a moving spring, and a stationary spring. When the coil in the coil assembly is energized, the magnetic conductor in the coil assembly is magnetized, thereby generating a magnetic force on the armature assembly. This force drives the armature assembly to move the moving spring relative to the stationary spring, causing the moving spring and stationary spring to come into contact and conduct or disconnect. In traditional snap-action relays, the assembly process for the moving spring and armature assembly is cumbersome, which is not conducive to reducing manufacturing costs. Summary of the Invention

[0003] Therefore, it is necessary to provide a snap-action relay to address the problem that the assembly process of the moving spring and armature assembly is cumbersome and not conducive to reducing manufacturing costs.

[0004] A snap-action relay, comprising:

[0005] An armature assembly includes an armature and a first connector disposed on the armature;

[0006] The moving spring is equipped with a moving contact;

[0007] The second connecting member is disposed on the movable spring and connected to the first connecting member;

[0008] A stationary spring is provided with a stationary contact opposite to the moving contact;

[0009] The armature assembly is used to drive the moving spring to move relative to the stationary spring, so that the moving contact and the stationary contact are relatively close to or far apart.

[0010] In one embodiment, the snap-action relay further includes a base, on which both the moving spring and the stationary spring are disposed, and the first connector covers at least a portion of the armature near the base and avoids the end of the armature away from the base.

[0011] In one embodiment, the first connector and the second connector are detachably connected.

[0012] In one embodiment, one of the first connector and the second connector is provided with a fastening groove, and the other is provided with a fastening structure, wherein the fastening structure is fastened into the fastening groove.

[0013] In one embodiment, at least a portion of the first connector and the second connector are clearance fits to provide relative rotational space for the first connector and the second connector.

[0014] In one embodiment, at least a portion of the surface between the first connector and the second connector is an arcuate surface, or at least one of the two opposing surfaces of the first connector and the second connector includes two mutually inclined surfaces.

[0015] In one embodiment, the first connector has a fastening groove on the side facing away from the armature, and the second connector has a fastening structure on the side facing the first connector. The fastening structure is fastened into the fastening groove, and at least a portion of at least one of the side of the fastening structure and the side wall of the fastening groove is an arc-shaped surface or an inclined surface inclined to the extending direction of the fastening groove.

[0016] In one embodiment, the fastening structure has a first mating surface and a second mating surface on the side facing away from the armature. The first mating surface and the second mating surface are arranged sequentially in the direction from the bottom wall of the fastening groove to the groove opening. The thickness of the portion of the fastening structure corresponding to the first mating surface decreases in the direction from the second mating surface to the first mating surface. The thickness of the portion of the fastening structure corresponding to the second mating surface decreases in the direction from the first mating surface to the second mating surface.

[0017] In one embodiment,

[0018] The fastening structure has a first mating surface and a second mating surface on the side facing away from the armature. The first mating surface and the second mating surface are arranged sequentially on the bottom wall of the fastening groove in the direction pointing towards the groove opening. The first mating surface is inclined to the second mating surface; and / or,

[0019] The fastening structure has a third mating surface and a fourth mating surface on the side facing the armature. The third mating surface and the fourth mating surface are arranged sequentially on the bottom wall of the fastening groove in the direction pointing towards the groove opening. The third mating surface is inclined to the fourth mating surface; and / or,

[0020] The fastening structure has at least a portion of the surface facing the armature and the side facing away from the armature as arc-shaped surfaces.

[0021] In one embodiment, the second connector has a mounting groove facing away from the first connector, and the movable spring has a lug that is inserted into the mounting groove.

[0022] In one embodiment, the snap-action relay further includes a base, on which both the moving spring and the stationary spring are disposed. The moving spring is made of an elastic material, and the armature assembly is disposed on the base via the moving spring.

[0023] In one embodiment, the movable spring is located at the connection between the movable spring and the second connector, and the portion between the movable contact has at least one bend.

[0024] In one embodiment, the movable spring includes a first connecting segment, a second connecting segment, and a third connecting segment, the first connecting segment and the third connecting segment being opposite to each other, the second connecting segment being connected to the first connecting segment and the third connecting segment, the second connecting member being connected to the first connecting segment, the armature assembly being located on the side of the first connecting segment facing away from the third connecting segment, and the movable contact being located on the third connecting segment.

[0025] In one embodiment, the connection position between the second connector and the first connecting segment is located at one end of the first connecting segment closer to the second connecting segment, and the snap-fit ​​relay further includes a base, with one end of the first connecting segment away from the second connecting segment disposed on the base.

[0026] In the assembly process of the aforementioned snap-fit ​​relay, the first connecting member can be placed on the armature, the second connecting member can be connected to the moving spring, and then the armature and the first connecting member can be assembled onto the moving spring as a whole through the connection of the second connecting member and the first connecting member. Compared with the step of fixing the moving spring to the armature assembly by injection molding or other methods, this can effectively simplify the assembly process of the snap-fit ​​relay and improve production efficiency.

[0027] Meanwhile, since the moving spring is connected to the first connecting member through the second connecting member, the insulation requirement between the moving spring and the armature is met through the second and first connecting members. Compared to having the moving spring directly mounted on the first connecting member, it is not necessary to increase the coverage area of ​​the first connecting member on the armature to meet the insulation requirement. This helps to reduce the coverage area of ​​the first connecting member on the armature, thereby reducing the material cost of the first connecting member and the manufacturing cost of the snap-action relay. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a snap-action relay in some embodiments.

[0029] Figure 2 for Figure 1 The diagram shows a cross-sectional view of a snap-action relay.

[0030] Figure 3 for Figure 1 The diagram shown is a schematic of the snap-action relay without the housing.

[0031] Figure 4 This is a schematic diagram of the structure of the moving spring, the first connecting member, and the second connecting member in some embodiments.

[0032] Figure 5for Figure 4 The diagram shows the structure of the moving spring, the first connecting member, and the second connecting member from another angle.

[0033] Figure 6 This is a schematic diagram of the structure of the second connector in some embodiments.

[0034] Figure 7 This is a schematic diagram of the structure of the first connector in some embodiments.

[0035] Figure 8 This is a schematic diagram of the moving spring in some embodiments.

[0036] Figure 9 This is a schematic diagram of the structure of the moving spring, the first connecting member, and the second connecting member in some embodiments.

[0037] Figure 10 for Figure 9 A cross-sectional view along the AA direction.

[0038] Figure 11 for Figure 10 A magnified view of a portion of region A in the middle.

[0039] Figure 12 This is a cross-sectional schematic diagram of the relay when the moving spring and the stationary spring are in contact, as shown in some embodiments.

[0040] Figure 13 for Figure 12 A magnified view of a portion of region C.

[0041] Icon labels:

[0042] 10. Base; 20. Stationary spring; 21. Stationary contact; 30. Moving spring; 31. First connecting section; 311. Lug; 32. Second connecting section; 33. Third connecting section; 34. Moving contact; 40. Armature assembly; 41. Armature; 42. First connector; 421. Snap-fit ​​groove; 50. Coil assembly; 51. Coil; 52. Magnetic conductor; 70. Second connector; 71. Snap-fit ​​structure; 72. Mounting groove; 73. First mating surface; 74. Second mating surface; 75. Third mating surface; 76. Fourth mating surface; 90. 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] Please see Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the structure of the latching relay in some embodiments. Figure 2 for Figure 1 The diagram shows a cross-sectional view of a snap-action relay. Figure 3 for Figure 1 The diagram shown is a schematic of the snap-action relay with the housing omitted (90°). The snap-action relays provided in this application include, but are not limited to, applications in industrial control, home appliances, automotive electronics, new energy equipment, and smart homes, used to achieve functions such as switching load circuits on / off, load control, power management, or signal isolation.

[0050] In some embodiments, the snap-action relay includes a base 10, a stationary spring 20, a moving spring 30, an armature assembly 40, and a coil assembly 50. The stationary spring 20 is disposed on the base 10 and has a stationary contact 21. The moving spring 30 is disposed on the base 10 and has a moving contact 34 opposite to the stationary contact 21. The armature assembly 40 is connected to the moving spring 30. The coil assembly 50 is disposed on the base 10 and includes a coil 51 and a magnetic conductor 52, at least a portion of which is located inside the coil 51. When the coil 51 is energized, the magnetic conductor 52 is magnetized, which drives the armature assembly 40 to deform the moving spring 30 through the magnetic field force, thereby causing the moving contact 34 to move relative to the base 10, so that the moving contact 34 moves toward or away from the stationary contact 21.

[0051] When the snap-action relay is used in industrial control equipment, home appliances, vehicle equipment, new energy equipment, etc., the moving contact 34 and the stationary contact 21 can be connected to the load circuit. When the moving contact 34 moves towards the stationary contact 21 until it makes contact with the stationary contact 21 and conducts, the snap-action relay conducts the load circuit. When the moving contact 34 and the stationary contact 21 separate, the snap-action relay disconnects the load circuit, thereby realizing the functions of switching the load circuit on and off, load control, power management, or signal isolation.

[0052] In some embodiments, the snap-action relay further includes a housing 90, which is mounted on the base 10. The moving spring 30, armature assembly 40, and coil assembly 50 are located within the space formed by the base 10 and the housing 90. The housing 90 is used to provide protection for the components inside the snap-action relay.

[0053] Further, refer to Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, the armature assembly 40 includes an armature 41 and a first connector 42, the first connector 42 being disposed on the armature 41. The snap-action relay also includes a second connector 70, the second connector 70 being disposed on the moving spring 30 and connected to the first connector 42.

[0054] In the assembly process of the aforementioned snap-fit ​​relay, the first connecting member 42 can be first placed on the armature 41, and the second connecting member 70 can be connected to the moving spring 30. Then, the armature 41 and the first connecting member 42 are assembled onto the moving spring 30 as a whole through the connection of the second connecting member 70 and the first connecting member 42. Compared with the step of fixing the moving spring 30 to the armature assembly 40 by injection molding or other methods, this can effectively simplify the assembly process of the snap-fit ​​relay and improve production efficiency.

[0055] Meanwhile, since the moving spring 30 is connected to the first connecting member 42 via the second connecting member 70, the insulation between the moving spring 30 and the armature 41 is achieved through the second connecting member 70 and the first connecting member 42. Compared to the moving spring 30 being directly mounted on the first connecting member 42, there is no need to increase the coverage area of ​​the first connecting member 42 on the armature 41 to meet the insulation requirements. This helps to reduce the coverage area of ​​the first connecting member 42 on the armature 41, thereby reducing the material cost of the first connecting member 42 and the manufacturing cost of the snap-action relay.

[0056] In some embodiments, the first connector 42 and the second connector 70 are detachably connected by any applicable method such as snap-fit, latch-fit, or plug-in, which simplifies the assembly process of the first connector 42 and the second connector 70, and also facilitates the separate disassembly and maintenance of the armature 41 and the moving spring 30. Taking a snap-fit ​​connection as an example, refer to... Figure 6 and Figure 7 As shown, one of the first connector 42 and the second connector 70 may be provided with a fastening groove 421, and the other is provided with a fastening structure 71, which fastens into the fastening groove 421.

[0057] Taking the embodiment shown in the accompanying drawings of this application as an example, the first connector 42 is provided with a fastening groove 421 on the side facing away from the armature 41, and the second connector 70 is provided with a fastening structure 71 facing the first connector 42, and the fastening structure 71 is fastened in the fastening groove 421.

[0058] refer to Figure 6 and Figure 8 As shown, in some embodiments, the second connector 70 is provided with a mounting groove 72 facing away from the first connector 42, and the movable spring 30 is provided with a lug 311, which is inserted into the mounting groove 72. Each movable spring 30 may be provided with two lugs 311, which are respectively provided on the two opposite edges of the first connecting segment 31. The second connector 70 is provided with two opposite mounting grooves 72, and each lug 311 is correspondingly inserted into one mounting groove 72.

[0059] During the assembly of the snap-fit ​​relay, the second connector 70 can be connected to the moving spring 30 by the cooperation of the lug 311 and the mounting groove 72, and then the snap-fit ​​structure 71 can be snapped onto the first connector 42 to complete the connection between the second connector 70 and the first connector 42. The snap-fit ​​connection method can effectively improve the convenience of assembly.

[0060] In some embodiments, the opening of the latching groove 421 faces the base 10. Thus, when the armature assembly 40 is connected to the movable spring 30 via the second connector 70, the direction of gravity of the armature assembly 40 is opposite to the direction in which the latching structure 71 engages with the latching groove 421. This allows the gravity of the armature assembly 40 to maintain the latching state of the latching structure 71 within the latching groove 421, improving the assembly reliability of the movable spring 30 and the armature assembly 40. Of course, the connection between the movable spring 30 and the second connector 70 can also employ any other suitable fixed or detachable connection method.

[0061] refer to Figure 9 , Figure 10 and Figure 11 As shown, in some embodiments, at least a portion of the first connector 42 and the second connector 70 are clearance-fitted to provide rotational space for the first connector 42 and the second connector 70. Taking the interlocking of the first connector 42 and the second connector 70 as an example, the interlocking structure 71 is clearance-fitted with the interlocking groove 421. The interlocking structure 71 is clearance-fitted with the first connector 42 in the interlocking groove 421 rather than being tightly fitted, so that there is a certain relative rotational space between the first connector 42 and the second connector 70. Thus, when the armature assembly 40 rotates relative to the base 10 under the drive of the coil assembly 50, the first connector 42 and the second connector 70 can adapt to the angle change of the armature assembly 40 and rotate relative to each other, so that the third connecting section 33 remains approximately parallel to the stationary spring 20, which is beneficial to improving the accuracy and stability of the contact.

[0062] In some embodiments, at least a portion of at least one of the side surface of the fastening structure 71 and the sidewall of the fastening groove 421 is configured as an arcuate surface, or at least one of the opposing surfaces of the first connector 42 and the second connector 70 includes two mutually inclined surfaces. Figure 11 In the embodiment shown, the surface of the fastening structure 71 facing the moving spring 30 includes two mutually inclined surfaces as an example. The two inclined surfaces can guide the relative rotation of the first connector 42 and the second connector 70, thereby improving the accuracy and reliability of the movement of the moving spring 30.

[0063] refer to Figure 12 and Figure 13 As shown, Figure 12 and Figure 13 This diagram illustrates the structure of the first connector 42 and the second connector 70 in another state. Figure 13 The first connector 42 and the second connector 70 shown are relative to each other. Figure 11 A relative rotation occurred. (Combined) Figure 13 and Figure 11 It can be seen that the first connector 42 contacts the fastening structure 71 at different positions in different states of the armature assembly 40, thereby guiding the relative movement of the first connector 42 and the second connector 70.

[0064] In some embodiments, at least a portion of the side surface of the fastening structure 71 and the fastening groove 421 is an arcuate surface or an inclined surface inclined to the extending direction of the fastening groove 421. Further, in some embodiments, the side of the fastening structure 71 facing away from the armature 41 has a first mating surface 73 and a second mating surface 74, which are sequentially arranged in the direction from the bottom wall of the fastening groove 421 to the groove opening. In some embodiments, the first mating surface 73 is an arcuate surface, or the first mating surface 73 is inclined to the second mating surface 74, as long as the first mating surface 73 and the second mating surface 74 can guide the relative rotation of the first connector 42 and the second connector 70, so that during the relative rotation of the first connector 42 and the second connector 70, the first connector 42 slides from contact with the first mating surface 73 to contact with the second mating surface 74.

[0065] When the first mating surface 73 is inclined to the second mating surface 74, the thickness of the part of the fastening structure 71 corresponding to the first mating surface 73 decreases in the direction from the second mating surface 74 to the first mating surface 73, and the thickness of the part corresponding to the second mating surface 74 decreases in the direction from the first mating surface 73 to the second mating surface 74.

[0066] In some embodiments, stationary springs 20 are provided on both opposite sides of the third connecting section 33, and moving contacts 34 are provided on both opposite sides of the third connecting section 33. One stationary spring 20 is located on the side of the third connecting section 33 facing the armature assembly 40, and the other stationary spring 20 is located on the side of the third connecting section 33 away from the armature assembly 40. Figure 10 and Figure 11In the illustrated embodiment, the coil 51 is energized, and the magnetic conductor 52 attracts the armature assembly 40, causing the third connecting segment 33 to contact the stationary spring 20 located on the side of the third connecting segment 33 facing the armature assembly 40. Figure 12 and Figure 13 In the illustrated embodiment, when the coil 51 is de-energized, the magnetic conductor 52 releases its attraction to the armature assembly 40. Driven by the elastic restoring force of the moving spring 30, the third connecting section 33 comes into contact with the stationary spring 20 located on the side of the third connecting section 33 facing away from the armature assembly 40. That is, the moving spring 30 and the stationary spring 20 located on the side of the third connecting section 33 facing away from the armature assembly 40 form a normally closed contact, and the moving spring 30 and the stationary spring 20 located on the side of the third connecting section 33 facing the armature assembly 40 form a normally open contact.

[0067] refer to Figure 10 and Figure 11 As shown, when coil 51 is energized, the third connecting section 33 contacts the stationary spring 20 located on the side of the third connecting section 33 facing the armature assembly 40, that is, the normally open contact closes and the normally closed contact opens. At this time, the first connecting piece 42 can contact the second mating surface 74 of the fastening structure 71. When coil 51 switches from the energized state to the de-energized state, the end of the armature assembly 40 near the base 10 deflects away from the coil assembly 50, and the third connecting section 33 moves away from the coil assembly 50 until it switches to the de-energized state. Figure 12 and Figure 13 As shown, when the third connecting section 33 is in contact with the stationary spring 20 located on the side of the third connecting section 33 opposite to the coil 51, the normally closed contact is closed and the normally open contact is open. Figure 10 and Figure 11 Switch to Figure 12 and Figure 13 During the process, the armature assembly 40 rotates relative to the base, and the first connector 42 and the second connector 70 rotate relative to each other (for example, the second connector 70 rotates relative to the first connector 42 along a certain direction). Figure 11 and Figure 13 The clockwise rotation ensures that the rotation of the armature assembly 40 relative to the base does not cause the third connecting section 33 to deflect, affecting the alignment of the moving contact 34 and the stationary contact 21. The first mating surface 73 and the second mating surface 74 provide guidance for the first connector 42, making the relative rotation of the first connector 42 and the second connector 70 more precise and smooth. When the moving spring 30 moves to the point where the third connecting section 33 abuts against the stationary spring 20 located on the side of the third connecting section 33 facing away from the coil 51, the first connector 42 slides along the fastening structure 71 to contact the junction of the first mating surface 73 and the second mating surface 74, or slides to contact the first mating surface 73.

[0068] Similarly, when coil 51 switches from a de-energized state to an energized state, due to the attraction of the magnetic conductor 52 to the armature 41, the end of the armature assembly 40 near the base 10 deflects in the direction close to the coil assembly 50 until the moving spring 30 separates from the stationary spring 20 located on the side of the third connecting section 33 opposite to the coil assembly 50 and contacts the stationary spring 20 located on the side of the third connecting section 33 facing the coil assembly 50. During this process, the first connecting member 42 changes from contacting the junction of the first mating surface 73 and the second mating surface 74 of the second connecting member 70, or contacting the first mating surface 73, to contacting the second mating surface 74. It can be seen that during the movement of the third connecting section 33 relative to the base 10 to contact either of the stationary springs 20 on opposite sides, the relative rotation of the first connecting member 42 and the second connecting member 70 ensures that the third connecting section 33 does not deflect with the rotation of the armature assembly 40, and maintains the alignment of the moving contact 34 of the third connecting section 33 with the stationary contact 21 of the moving spring 30.

[0069] In some embodiments, the fastening structure 71 has a third mating surface 75 and a fourth mating surface 76 on the side facing the armature 41. The third mating surface 75 is disposed opposite to the first mating surface 73, and the fourth mating surface 76 is disposed opposite to the second mating surface 74. The third mating surface 75 and the fourth mating surface 76 are arranged sequentially in the direction from the bottom wall of the fastening groove 421 to the groove opening, and the third mating surface 75 is inclined to the fourth mating surface 76. It can be understood that the function of the third mating surface 75 and the fourth mating surface 76 is similar to that of the first mating surface 73 and the second mating surface 74, in the connection between the armature assembly 40 and the moving spring 30. Figure 11 The status shown has switched to Figure 13 In the indicated state, the first connector 42 switches from contact with the third mating surface 75 to contact with the junction of the third mating surface 75 and the fourth mating surface 76, or to contact with the fourth mating surface 76. Conversely, when the armature assembly 40 and the moving spring 30 are in contact... Figure 13 The status shown has switched to Figure 11 In the indicated state, the first connecting member 42 switches from contacting the junction of the third mating surface 75 and the fourth mating surface 76, or contacting the fourth mating surface 76, to contacting the third mating surface 75. The third mating surface 75 and the fourth mating surface 76 also provide guidance for the relative rotation of the first connecting member 42 and the second connecting member 70. Thus, both opposite sides of the fastening structure 71 can provide guidance for the relative rotation of the first connecting member 42 and the second connecting member 70, effectively improving the accuracy and reliability of the movement of the moving spring 30.

[0070] In other embodiments, at least a portion of the surface of the fastening structure 71 facing the armature 41 may also be an arcuate surface, which can also provide guidance for the relative rotation of the first connector 42 and the second connector 70.

[0071] Combination Figure 2 and Figure 3 As shown, in some embodiments, the moving spring 30 is made of elastic material, and the armature assembly 40 is mounted on the base 10 via the moving spring 30. In other words, the moving spring 30 also serves to support and carry the armature assembly 40 in the snap-action relay. Thus, after the armature assembly 40 causes the moving spring 30 to deform, the elastic deformation of the moving spring 30 can provide a reset force for the armature assembly 40. This allows the snap-action relay to omit the supporting and reset elements (such as tension springs) of the armature assembly 40, reducing the number of components in the snap-action relay, increasing the structural integration of the snap-action relay, and reducing the size and cost of the snap-action relay.

[0072] In some embodiments, the material of the moving spring 30 includes, but is not limited to, any suitable conductive elastic material such as tin bronze, beryllium bronze, elastic stainless steel or spring steel, and the material of the stationary spring 20 can be the same as that of the moving spring 30. The stationary spring 20 can also be any suitable conductive rigid material such as brass (H65) or phosphor bronze.

[0073] refer to Figure 4 and Figure 5 As shown in some embodiments, the portion of the movable spring 30 located between the connection point of the movable spring 30 and the armature assembly 40 and the movable contact 34 has at least one bend. In the embodiment shown in the accompanying drawings, the movable spring 30 has two bends between the connection point of the movable spring 30 and the armature assembly 40 and the movable contact 34 as an example.

[0074] With this configuration, the portion of the moving spring 30 located at the connection point between the moving spring 30 and the armature assembly 40 and between the moving contact 34 has at least one bend. This increases the deformation capacity of the moving spring 30 and reduces the difficulty of deformation. It is beneficial to use the deformation capacity of the moving spring 30 itself to buffer external impacts or vibrations, thereby improving the stability of the contact when the moving contact 34 and the stationary contact 21 are in contact. At the same time, it is also beneficial to reduce the force required to drive the moving spring 30 to deform, thereby reducing the power consumption of the coil assembly 50 when the armature assembly 40 drives the moving spring 30 to deform so that the moving contact 34 is in contact with or separated from the stationary contact 21. This is beneficial to reducing the number of turns of the coil 51 in the coil assembly 50, and is beneficial to reducing the size and cost of the snap-action relay.

[0075] Furthermore, the connection point between the armature assembly 40 and the moving spring 30 is located in the part of the bending portion of the moving spring 30 that is far from the moving contact 34. This also helps to shorten the lever arm when the armature assembly 40 drives the moving spring 30 to deform, which helps to improve the stability of the movement of the moving spring 30, thereby improving the stability of the contact. The shortening of the lever arm also helps to reduce the power consumption of the coil assembly 50 driving the moving spring 30 to deform, which is conducive to the reduction of the size and cost of the snap-action relay.

[0076] In addition, the bending design allows the moving spring 30 to have multiple parts that can deform under the drive of the armature assembly 40. The deformation and force are distributed among the multiple parts of the moving spring 30, which can reduce the local stress concentration phenomenon of the moving spring 30 and reduce the risk of deformation and damage of the moving spring 30.

[0077] refer to Figure 3 and Figure 4 As shown, in some embodiments, the first connector 42 covers at least a portion of the end of the armature 41 near the base 10 and avoids the end of the armature 41 away from the base 10. The first connector 42 and the second connector 70 serve as intermediate elements between the armature 41 and the moving spring 30 to meet the connection and insulation requirements between the armature 41 and the moving spring 30. The materials of the first connector 42 and the second connector 70 include, but are not limited to, plastic.

[0078] It is understood that the moving spring 30 provided in some embodiments of this application, due to its bending capability, can shorten the size of the moving spring 30 in the direction perpendicular to the base 10, so that the connection position between the armature assembly 40 and the first connecting section 31 can be closer to the base 10. Thus, the first connecting member 42 only needs to cover the end of the armature 41 near the base 10 to meet the connection requirements with the first connecting section 31, without having to cover the entire armature 41. This is beneficial to reducing the weight of the armature assembly 40, thereby reducing the force required by the coil assembly 50 to drive the armature assembly 40 to move, reducing the power consumption of the coil assembly 50, and further reducing the size and cost of the snap-action relay.

[0079] Please see again. Figure 3 , Figure 4 and Figure 5In some embodiments, the movable spring 30 includes a first connecting segment 31, a second connecting segment 32, and a third connecting segment 33. The first connecting segment 31 and the third connecting segment 33 are opposite each other, and the second connecting segment 32 is connected to the first connecting segment 31 and the third connecting segment 33. The second connector 70 is connected to the first connecting segment 31, the armature assembly 40 is located on the side of the first connecting segment 31 facing away from the third connecting segment 33, and the movable contact 34 is located on the third connecting segment 33. By forming two bends through the three connecting segments, the deformation capability of the movable spring 30 can be effectively improved, the vibration resistance of the snap-action relay can be improved, and the power consumption of the coil assembly 50 can be reduced. At the same time, the connection between the movable spring 30 and the armature assembly 40 is located at the part of the movable spring 30 close to the armature assembly 40 and also close to the part of the movable spring 30 connected to the base 10, which effectively reduces the force required for the armature assembly 40 to drive the movable spring 30 to deform, which is beneficial to improving the contact stability and reducing power consumption. Furthermore, the connection point of the first connector 42 and the second connector 70 is located on the side of the first connecting section 31 away from the moving contact 34. When the connection point of the first connector 42 and the second connector 70 generates debris due to friction, the debris is not likely to fall onto the moving contact 34 and the stationary contact 21 and affect the contact closure effect.

[0080] In some embodiments, the first connecting segment 31 is substantially perpendicular to the second connecting segment 32, and the second connecting segment 32 is substantially perpendicular to the third connecting segment 33, so that the first connecting segment 31 and the third connecting segment 33 are substantially parallel. In this way, the third connecting segment 33, where the moving contact 34 is located, is substantially perpendicular to the base 10, which can improve the stability and accuracy of the deformation of the moving spring 30 driven by the armature assembly 40, as well as the accuracy of the contact.

[0081] Combination Figure 2 and Figure 5As shown, in some embodiments, the connection position of the second connector 70 and the first connecting segment 31 is located at the end of the first connecting segment 31 closer to the second connecting segment 32, that is, at the end of the first connecting segment 31 away from the base 10. The end of the first connecting segment 31 away from the second connecting segment 32 is provided on the base 10, for example, directly on the base 10, or provided on the base 10 through a bent section extending from the first connecting segment 31. With this configuration, the support position of the base 10 on the moving spring 30 and the connection position of the moving spring 30 and the armature assembly 40 are approximately opposite in the direction perpendicular to the base 10. This helps to eliminate the cantilever structure formed by the moving spring 30, thereby helping to reduce the swing amplitude of the moving contact 34, improve the stability of the contact, shorten the lever arm of the armature assembly 40 acting on the moving spring 30, improve the action response speed and motion smoothness, and reduce the power consumption of the coil assembly 50. Furthermore, the gravity of the armature assembly 40 acts on the end of the moving spring 30 closest to the base 10, which helps to improve the support effect of the moving spring 30 on the armature assembly 40 and reduces the risk of deformation of the moving spring 30 due to the gravity of the armature assembly 40. Moreover, the moving spring 30 can adapt to the layout requirements of the moving contact 34 and the armature assembly 40, which is beneficial to the assembly of the armature assembly 40 and the miniaturization of the snap-action relay.

[0082] In some embodiments, during the assembly of the snap-action relay, the moving spring 30 and the second connecting member 70 can be assembled as a whole first, and then the whole formed by the moving spring 30 and the second connecting member 70 can be assembled onto the base 10. Similarly, the armature 41 and the first connecting member 42 can be assembled as a whole first, and then the armature assembly 40 can be assembled onto the moving spring 30 as a whole. It can be seen that through the design of the structure and connection relationship, the number of assembly components in the snap-action relay can be effectively reduced, and the assembly convenience of the snap-action relay can be improved.

[0083] 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.

[0084] 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 snap-action relay, characterized in that, include: An armature assembly includes an armature and a first connector disposed on the armature; The moving spring is equipped with a moving contact. The second connecting member is disposed on the movable spring and connected to the first connecting member; A stationary spring is provided with a stationary contact opposite to the moving contact; The armature assembly is used to drive the moving spring to move relative to the stationary spring, so that the moving contact and the stationary contact are relatively close to or far apart.

2. The snap-action relay according to claim 1, characterized in that, The snap-action relay also includes a base, on which both the moving spring and the stationary spring are disposed. The first connector covers at least a portion of the armature near the base and avoids the end of the armature away from the base.

3. The snap-action relay according to claim 1, characterized in that, The first connector and the second connector are detachably connected.

4. The snap-action relay according to claim 3, characterized in that, One of the first connector and the second connector is provided with a fastening groove, and the other is provided with a fastening structure, wherein the fastening structure is fastened into the fastening groove.

5. The snap-action relay according to claim 1, characterized in that, At least a portion of the first connector and the second connector are clearance fits to provide relative rotation space for the first connector and the second connector.

6. The snap-action relay according to claim 5, characterized in that, At least a portion of the surfaces between the first connector and the second connector are arcuate surfaces, or at least one of the two opposing surfaces of the first connector and the second connector includes two mutually inclined surfaces.

7. The snap-action relay according to claim 5, characterized in that, The first connector has a fastening groove on the side facing away from the armature, and the second connector has a fastening structure on the side facing the first connector. The fastening structure is fastened into the fastening groove. At least a portion of at least one of the side of the fastening structure and the side wall of the fastening groove is an arc-shaped surface or an inclined surface inclined to the extending direction of the fastening groove.

8. The snap-action relay according to claim 7, characterized in that, The fastening structure has a first mating surface and a second mating surface on the side facing away from the armature. The first mating surface and the second mating surface are arranged sequentially in the direction from the bottom wall of the fastening groove to the groove opening. The thickness of the portion of the fastening structure corresponding to the first mating surface decreases in the direction from the second mating surface to the first mating surface.

9. The snap-action relay according to claim 7, characterized in that, The fastening structure has a first mating surface and a second mating surface on the side opposite to the armature. The first mating surface and the second mating surface are arranged sequentially in the direction from the bottom wall of the fastening groove to the groove opening. The first mating surface is inclined to the second mating surface. And / or, The fastening structure has a third mating surface and a fourth mating surface on the side facing the armature. The third mating surface and the fourth mating surface are arranged sequentially in the direction from the bottom wall of the fastening groove to the groove opening. The third mating surface is inclined to the fourth mating surface. And / or, The fastening structure has at least a portion of the surface facing the armature and the side facing away from the armature as arc-shaped surfaces.

10. The snap-action relay according to claim 1, characterized in that, The second connector has a mounting groove facing away from the first connector, and the moving spring has a lug that is inserted into the mounting groove.

11. The snap-action relay according to claim 1, characterized in that, The snap-action relay also includes a base, on which both the moving spring and the stationary spring are disposed. The moving spring is made of an elastic material, and the armature assembly is disposed on the base via the moving spring.

12. The snap-action relay according to claim 1, characterized in that, The movable spring is located at the connection between the movable spring and the second connector, and the portion between the movable contact has at least one bend.

13. The snap-action relay according to claim 12, characterized in that, The movable spring includes a first connecting segment, a second connecting segment, and a third connecting segment. The first connecting segment and the third connecting segment are opposite to each other. The second connecting segment is connected to the first connecting segment and the third connecting segment. The second connecting member is connected to the first connecting segment. The armature assembly is located on the side of the first connecting segment facing away from the third connecting segment. The movable contact is located on the third connecting segment.

14. The snap-action relay according to claim 13, characterized in that, The connection position between the second connector and the first connecting segment is located at one end of the first connecting segment closer to the second connecting segment. The snap-fit ​​relay also includes a base, and the end of the first connecting segment away from the second connecting segment is disposed on the base.

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