Relay

Abstract

A relay (10), comprising a base (11), a contact assembly (12) and an electromagnetic system (13). The contact assembly (12) comprises a first movable spring portion (121) and a first static spring portion (123) which are opposite each other, and a second movable spring portion (122) and a second static spring portion (124) which are opposite each other, with at least part of the first static spring portion (123) being capable of undergoing flexible deformation. The electromagnetic system (13) is arranged on the base (11) and is configured to drive the first movable spring portion (121) and the second movable spring portion (122) to move toward or away from the first static spring portion (123) and the second static spring portion (124), and a stroke difference for contact between the first movable spring portion (121) and the first static spring portion (123) driven by the electromagnetic system (13) is less than a stroke difference for contact between the second movable spring portion (122) and the second static spring portion (124) driven by the electromagnetic system (13).

Description

relay

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 2025100634560, filed on January 15, 2025, entitled "Relay", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of relay technology, and in particular to a relay. Background Technology

[0004] In a relay, there are usually moving spring and stationary spring. The relay drives the armature to rotate through the coil assembly, which causes the pusher to move, thereby moving the moving spring towards or away from the stationary spring to control the contact or separation of the moving contact on the moving spring and the stationary contact on the stationary spring.

[0005] To meet the requirements of low resistance and low temperature rise, some relays are equipped with two parallel moving spring sections and two parallel stationary spring sections. One set of these spring sections is controlled to make contact with the other before making contact and to separate after making separation. The set that makes contact first and then separates serves to ignite the arc. However, this configuration can lead to a large overtravel in one set of moving and stationary spring sections, resulting in high contact stress and making them prone to damage and deformation, thus affecting contact accuracy. Summary of the Invention

[0006] According to various embodiments of this application, a relay is provided.

[0007] A relay includes a base, a contact assembly, and an electromagnetic system. The contact assembly includes a first moving spring portion, a second moving spring portion, a first stationary spring portion, and a second stationary spring portion, all disposed on the base. The first moving spring portion and the second moving spring portion are electrically connected to each other, and the first stationary spring portion and the second stationary spring portion are also electrically connected to each other. The first moving spring portion and the first stationary spring portion are opposite each other, and the second moving spring portion and the second stationary spring portion are opposite each other. At least a portion of the first stationary spring portion is capable of flexible deformation. The electromagnetic system is disposed on the base and is used to drive the first moving spring portion and the second moving spring portion to move towards or away from the first stationary spring portion and the second stationary spring portion, wherein the travel difference between the first moving spring portion and the first stationary spring portion contacting each other caused by the electromagnetic system is less than the travel difference between the second moving spring portion and the second stationary spring portion contacting each other caused by the electromagnetic system.

[0008] In one embodiment, the second stationary spring portion includes a fixing part and a second stationary contact. The fixing part is fixedly disposed on the base, and the second stationary contact is disposed on the fixing part. The fixing part is made of a rigid material.

[0009] In one embodiment, one end of the first moving spring is fixedly mounted on the base, and the other end is connected to the electromagnetic system. The first moving spring is capable of flexible deformation.

[0010] In one embodiment, the first stationary spring portion includes a contact portion and a connecting portion, the connecting portion being electrically connected to the second stationary spring portion, and the contact portion being opposite to the first moving spring portion; the second stationary spring portion is provided with a second stationary contact for contacting the second moving spring portion, and at least a portion of the contact portion is located on the side of the second stationary contact facing away from the base.

[0011] In one embodiment, the connecting portion is fixedly disposed on the second stationary spring portion, and the contact portion extends out of the second stationary spring portion.

[0012] In one embodiment, the first stationary spring portion further includes a first stationary contact disposed on the contact portion and used to contact the first moving spring portion, the first stationary contact and the second stationary contact being flush.

[0013] In one embodiment, the first stationary spring portion has at least one bend in the extension direction.

[0014] In one embodiment, the first stationary spring portion further includes a bent portion with both ends connected to the contact portion and the connecting portion respectively, and there is a bend between the bent portion and the contact portion, and between the bent portion and the connecting portion.

[0015] In one embodiment, the first stationary spring portion further includes a buffer portion connected to the contact portion, the relay is provided with a buffer protrusion, the buffer protrusion is provided on the side of the first moving spring portion facing the first stationary spring portion, and the buffer portion abuts against the side of the buffer protrusion facing away from the first moving spring portion.

[0016] In one embodiment, the buffer protrusion is disposed on the base, or the buffer protrusion is disposed on the second static spring portion.

[0017] In one embodiment, the electromagnetic system includes a coil assembly and an armature, and the relay further includes a pusher. The coil assembly is disposed on the base, the armature is movably connected to the base, the pusher is movably connected to the armature, and the first moving spring portion and the second moving spring portion are both connected to the pusher. The armature can drive the first moving spring portion and the second moving spring portion to move through the pusher under the electromagnetic force of the coil assembly.

[0018] In one embodiment, the distance between the first moving spring portion and the first stationary spring portion is less than the distance between the second moving spring portion and the second stationary spring portion.

[0019] In one embodiment, the first movable spring portion and the second movable spring portion are at least partially misaligned in the direction from the first movable spring portion to the first stationary spring portion, and the distance between the first movable spring portion and the first stationary spring portion is less than the distance between the second movable spring portion and the first stationary spring portion.

[0020] In one embodiment, the relay includes two push clips arranged side by side, with the first movable spring portion and the second movable spring portion respectively connected to the two push clips. The armature includes a main body portion and a push portion connected to each other. The main body portion is rotatably connected to the base. At least a portion of the push portion is embedded in the two push clips. The push portion can move towards or away from the first stationary spring portion under the drive of the main body portion, so as to push the push clips to drive the first movable spring portion and the second movable spring portion to move. On the side of the push portion facing the first stationary spring portion, the distance between the push portion and the push clip connected to the first movable spring portion is smaller than the distance between the push portion and the push clip connected to the second movable spring portion.

[0021] Details of one or more embodiments of the present invention are set forth in the following drawings and description. Other features, objects, and advantages of the invention will become apparent from the specification, drawings, and claims. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the disclosed drawings without creative effort.

[0023] Figure 1 is a schematic diagram of the relay structure in some embodiments.

[0024] Figure 2 is a schematic diagram of the structure in some embodiments where the armature is embedded in the push card.

[0025] Figure 3 is a schematic diagram of the relay from another angle in some embodiments.

[0026] Figure 4 is a partially enlarged schematic diagram of the relay shown in Figure 3 within the circular frame area.

[0027] Figure 5 is a schematic diagram of the contact assembly in some embodiments.

[0028] Figure 6 is a schematic diagram of the structure of the first stationary spring portion and the second stationary spring portion in some embodiments.

[0029] Figure 7 is a structural schematic diagram of the first and second stationary spring sections shown in Figure 6 from another angle.

[0030] Figure 8 is an exploded schematic diagram of the first and second stationary spring sections shown in Figure 6.

[0031] Figure 9 is a schematic diagram of the structure of the first moving spring part and the second moving spring part in some embodiments.

[0032] Figure 10 is a schematic diagram of the structure in some embodiments where the first moving spring portion and the second moving spring portion are connected to the push card.

[0033] Figure 11 is a schematic diagram of the push card structure in some embodiments.

[0034] Figure 12 is a schematic diagram of the structure of the electromagnetic system with two push card relays in some embodiments.

[0035] Figure 13 is a schematic diagram of the structure in some embodiments where the first moving spring part and the second moving spring part are respectively located in two push cards.

[0036] Figure 14 is a schematic diagram of the structure of the electromagnetic system with two push card relays in some other embodiments. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] Please refer to Figures 1, 2, and 3. Figure 1 is a structural schematic diagram of the relay 10 in some embodiments. Figure 2 is an assembly schematic diagram of the first moving spring portion 121, the second moving spring portion 122, the armature 132, and the push card 133 in some embodiments. Figure 3 is a structural schematic diagram of the relay 10 from another angle in some embodiments. The relay 10 provided in this application can be used to control the on / off state of any applicable circuit. In some embodiments, the relay 10 includes a base 11, a contact assembly 12, and an electromagnetic system 13. The contact assembly 12 includes a first moving spring portion 121, a second moving spring portion 122, a first stationary spring portion 123, and a second stationary spring portion 124 disposed on the base 11. The first moving spring portion 121 and the second moving spring portion 122 are electrically connected to each other, and the first stationary spring portion 123 and the second stationary spring portion 124 are electrically connected to each other. The first moving spring portion 121 is opposite to the first stationary spring portion 123, and the second moving spring portion 122 is opposite to the second stationary spring portion 124. The electromagnetic system 13 is mounted on the base 11 and can drive the first moving spring portion 121 and the second moving spring portion 122 to move toward or away from the first stationary spring portion 123 and the second stationary spring portion 124, so that the first moving spring portion 121 and the first stationary spring portion 123 come into contact and the second moving spring portion 122 comes into contact with the second stationary spring portion 124, or so that the first moving spring portion 121 and the first stationary spring portion 123 separate and the second moving spring portion 122 and the second stationary spring portion 124 separate.

[0044] The first moving spring portion 121, the second moving spring portion 122, the first stationary spring portion 123, and the second stationary spring portion 124 are disposed on the base 11. The first moving spring portion 121 and the second moving spring portion 122 can both be connected to the conductive structure disposed on the base 11. The first moving spring portion 121 and the second moving spring portion 122 are electrically connected to each other through the conductive structure. The portion of the conductive structure that extends to the side of the base 11 opposite to the electromagnetic system 13 is used to communicate with an external circuit. The first stationary spring portion 123 and the second stationary spring portion 124 are electrically connected to each other. At least one of the first stationary spring portion 123 and the second stationary spring portion 124 extends through the base 11, and the portion of the first stationary spring portion 123 that extends to the side of the base 11 opposite to the electromagnetic system 13 is used to communicate with an external circuit. When at least one set of moving spring parts and stationary spring parts among the first moving spring part 121 and the first stationary spring part 123, the second moving spring part 122 and the second stationary spring part 124 are in contact, the external circuit is turned on; when the first moving spring part 121 and the first stationary spring part 123, the second moving spring part 122 and the second moving spring part 124 are all separated, the external circuit is turned off.

[0045] In some embodiments, the electromagnetic system 13 includes a coil assembly 131, a yoke, and an armature 132. The relay 10 also includes a pusher 133. The coil assembly 131 is disposed on the base 11. The yoke passes through the coil assembly 131 and is used to conduct the magnetic field generated by the coil assembly 131. The armature 132 is rotatably disposed on the base 11. The pusher 133 is movably connected to the armature 132. The first moving spring portion 121 and the second moving spring portion 122 are both connected to the pusher 133. When the coil is energized or the direction of the current in the coil changes, the coil assembly 131 can drive the armature 132 to rotate relative to the base 11 by means of electromagnetic force. The rotation of the armature 132 relative to the base 11 can cause the pusher 133 to drive the first moving spring portion 121 and the second moving spring portion 122 to move towards or away from the first stationary spring portion 123 and the second stationary spring portion 124. It should be noted that the naming of the base 11 in this application does not imply a limitation on the structure and location of the base 11. In the relay 10, the location of the base 11 is not limited, and the base 11 may include, but is not limited to, a base structure, an upper shell structure, or an outer shell structure.

[0046] Furthermore, in some embodiments, the travel difference between the first moving spring portion 121 and the first stationary spring portion 123 that are in contact with each other caused by the electromagnetic system 13 is less than the travel difference between the second moving spring portion 122 and the second stationary spring portion 124 that are in contact with each other caused by the electromagnetic system 13. That is, during the process of the electromagnetic system 13 driving the first moving spring portion 121 and the second moving spring portion 122 to move closer to the first stationary spring portion 123 and the second stationary spring portion 124, the rotational travel of the armature 132 that is in contact with the first moving spring portion 121 and the first stationary spring portion 123 relative to the base 11 is less than the rotational travel of the armature 132 that is in contact with the second moving spring portion 122 and the second stationary spring portion 124 relative to the base 11. In other words, during the process of bringing the two sets of moving springs and the two sets of stationary springs into contact, the first moving spring 121 and the first stationary spring 123 will contact first, followed by the second moving spring 122 and the second stationary spring 124. Conversely, during the process of separating the two sets of moving springs and the two sets of stationary springs, the second moving spring 122 and the second stationary spring 124 will separate first, followed by the first moving spring 121 and the first stationary spring 123. Therefore, the second moving spring 122 and the second stationary spring 124 primarily function as current carriers in the circuit, while the first moving spring 121 and the first stationary spring 123 can function as arc-ignition / ablation elements. The first moving spring portion 121 and the second moving spring portion 122 can be connected in parallel, and the first stationary spring portion 123 and the second stationary spring portion 124 can be connected in parallel. The parallel connection of the two sets of moving spring portions and stationary spring portions helps to reduce the circuit resistance. At the same time, the arrangement of the second moving spring portion 122 and the second stationary spring portion 124 contacting and then separating first, so that the two sets of moving spring portions and stationary spring portions are in a state of sequential contact or separation during the contact or separation process, so that only one set of moving spring portions and one set of stationary spring portions are separated at the same time, which also helps to improve the stability of the contact resistance of the current-carrying component, thereby improving the temperature rise stability of the circuit. In some embodiments, the first moving spring portion 121 and the second moving spring portion 122 are used to insert into the root of the base 11 as an integral structure, so that the first moving spring portion 121 and the second moving spring portion 122 are connected in parallel. This simplifies the circuit design of the parallel setting, reduces the manufacturing cost of the relay 10, and also helps to improve the processing and assembly positioning accuracy between the first moving spring portion 121, the second moving spring portion 122 and the base 11. Of course, in other embodiments, the first moving spring portion 121 and the second moving spring portion 122 can also be independent of each other and their roots can be inserted into the base 11 respectively. The first moving spring portion 121 and the second moving spring portion 122 can be connected in parallel through lead-out lines.

[0047] Furthermore, one end of the first movable spring portion 121 and the second movable spring portion 122 are fixedly disposed on the base 11, and the other end is connected to the push card 133 and can move with the push card 133. That is, at least a portion of the first movable spring portion 121 and the second movable spring portion 122 can undergo flexible deformation. In some embodiments, at least a portion of the first stationary spring portion 123 can undergo flexible deformation, so that the first stationary spring portion 123 and the first movable spring portion 121 can undergo flexible deformation with contact stress when they come into contact. It is understood that since the first movable spring portion 121 and the first stationary spring portion 123 come into contact first, and after the first movable spring portion 121 and the first stationary spring portion 123 come into contact, the armature 132 will continue to move relative to the base 11 until the second movable spring portion 122 and the second stationary spring portion 124 come into contact. In this process, the first movable spring portion 121 will further compress the first stationary spring portion 123. In other words, the overtravel of the first moving spring portion 121 and the first stationary spring portion 123 is greater than that of the second moving spring portion 122 and the second stationary spring portion 124. When the second moving spring portion 122 contacts the second stationary spring portion 124, the contact stress between the first moving spring portion 121 and the first stationary spring portion 123 is greater than that between the second moving spring portion 122 and the second stationary spring portion 124. Therefore, by using a flexible material capable of flexible deformation as the first stationary spring portion 123, the first stationary spring portion 123 and the first moving spring portion 121 can form a double flexible structure. When the first moving spring portion 121 and the first stationary spring portion 123 contact, the flexible deformation of the first moving spring portion 121 and the first stationary spring portion 123 can effectively absorb the contact stress between the first moving spring portion 121 and the first stationary spring portion 123, preventing the first stationary spring portion 123 and the first moving spring portion 121 from being damaged or deformed due to stress, thereby affecting the contact accuracy and improving the performance reliability of the relay 10.

[0048] Referring to Figures 5, 6, 7, and 8, in some embodiments, the second stationary spring portion 124 includes a fixing portion 1241 and a second stationary contact 1242. The fixing portion 1241 is fixedly disposed on the base 11, for example, passing through the base 11. The second stationary contact 1242 is disposed on the fixing portion 1241 and is located on the same side of the base 11 as the electromagnetic system 13. The fixing portion 1241 is made of a rigid material. This avoids deformation of the second stationary spring portion 124 that could affect the contact accuracy between the second stationary spring portion 124 and the second moving spring portion 122. Combined with the design of the first stationary spring portion 123 being made of a flexible material, the contact accuracy and performance reliability of the relay 10 can be balanced. In this application, the materials of the flexible first moving spring portion 121, the second moving spring portion 122, and the first stationary spring portion 123 include, but are not limited to, any suitable material such as copper alloy, stainless steel, copper foil, and aluminum foil. The materials of the fixing part 1241 of the rigid second stationary spring portion 124 include, but are not limited to, any suitable material such as copper, copper alloy, stainless steel, and nickel alloy.

[0049] In some embodiments, the first stationary spring portion 123 includes a contact portion 1231, a connecting portion 1232, and a first stationary contact 1233. The connecting portion 1232 is fixedly disposed on the second stationary spring portion 124 by any applicable fixing method such as welding and is electrically connected to the second stationary spring portion 124. The contact portion 1231 extends out of the second stationary spring portion 124 and is opposite to the first moving spring portion 121. The first stationary contact 1233 is disposed on the contact portion 1231 and is used to contact the first moving spring portion 121. The arrangement of the first stationary spring portion 123 on the second stationary spring portion 124 enables the first stationary spring portion 123 and the second stationary spring portion 124 to be connected in parallel, which helps to simplify the parallel circuit design of the relay 10, reduce the manufacturing difficulty and manufacturing cost, and also helps to improve the processing and assembly positioning accuracy between the base, the first stationary spring portion 123, and the second stationary spring portion 124. Of course, in other embodiments, the first static spring portion 123 and the second static spring portion 124 may also be two independent structures respectively inserted into the base 11 and connected in parallel through wires or other lines.

[0050] Furthermore, in some embodiments, the second stationary spring portion 124 is provided with a second stationary contact 1242 for contacting the second moving spring portion 122, and at least a portion of the contact portion 1231 is located on the side of the second stationary contact 1242 facing away from the base 11. That is, the first stationary contact 1233 and the second stationary contact 1242 are offset from each other in the thickness direction of the base 11. It is understood that the first stationary spring portion 123 and the second stationary spring portion 124, as arc erosion ends, may generate ablation splashes during the arc ignition process. By setting the first stationary contact 1233 and the second stationary contact 1242 to be offset from each other in the thickness direction of the base 11, the risk of contamination of the second stationary contact 1242 when the first stationary contact 1233 undergoes ablation splashes can be reduced, thereby improving the stability of the contact resistance between the second stationary spring portion 124 and the second moving spring portion 122 and improving the performance reliability of the relay 10.

[0051] Referring to Figures 5 and 9, the first moving spring portion 121 is provided with a first moving contact 1211 for contacting the first stationary contact 1233, and the second moving spring portion 122 is provided with a second moving contact 1221 for contacting the second stationary contact 1242. The portions of the first moving spring portion 121 and the second moving spring portion 122 with the first moving contact 1211 and the second moving contact 1221 are arranged side by side. Therefore, the design of the first stationary contact 1233 and the second stationary contact 1242 being spaced apart in the thickness direction of the base 11 is more easily adapted to the layout of the first moving spring portion 121 and the second moving spring portion 122, effectively realizing the contact or separation of the two sets of moving spring portions and stationary spring portions, and avoiding mutual interference between components.

[0052] In other embodiments, the portion of the second stationary spring portion 124 with the second stationary contact 1242 may also be located on the side of the contact portion 1231 of the first stationary spring portion 123 facing away from the base 11. For example, the second stationary spring portion 124 may be located on the first stationary spring portion 123, or the first stationary spring portion 123 and the second stationary spring portion 124 may be located on the base 11 respectively, and the distance between the second stationary contact 1242 and the base 11 is greater than the distance between the first stationary contact 1233 and the base 11. Therefore, during the operation of relay 10, the first stationary contact 1233 is located below the second stationary contact 1242 in the direction of gravity. When the first moving spring portion 121 and the first stationary spring portion 123 perform arc erosion, the ablation material generated by the first moving contact 1211 and the first stationary contact 1233 is more likely to fall down under the action of gravity, and is less likely to fall onto the second moving contact 1221 and the second stationary contact 1242, thus preventing the contacts from being contaminated. This is beneficial to improving the structural and performance reliability of relay 10.

[0053] In some embodiments, the first stationary contact 1233 and the second stationary contact 1242 are flush. It is understood that since the overtravel between the first moving spring portion 121 and the first stationary spring portion 123 is greater than the overtravel between the second moving spring portion 122 and the second stationary spring portion 124, that is, when the second moving spring portion 122 and the second stationary spring portion 124 come into contact, the deformation of the first moving spring portion 121 is larger, which enables the contact portion 1231 to move away from the first moving spring portion 121. Therefore, when the two sets of moving spring parts and stationary spring parts are not in contact, the first stationary contact 1233 and the second stationary contact 1242 are flush. When the second moving spring part 122 and the second stationary spring part 124 are in contact, due to the deformation of the contact part 1231, the first stationary contact 1233 and the second stationary contact 1242 are also misaligned in the direction from the first moving spring part 121 to the first stationary spring part 123. This can further reduce the contamination of the second stationary contact 1242 by the ablation and splashing of the first stationary contact 1233 and the first moving contact 1211, and improve the performance reliability of the relay 10. At the same time, the flush arrangement of the first stationary contact 1233 and the second stationary contact 1242 is also conducive to improving the processing and assembly efficiency and assembly positioning accuracy.

[0054] In some embodiments, the first stationary spring portion 123 has at least one bend in its extending direction. For example, the first stationary spring portion 123 further includes a bent portion 1234 whose two ends are respectively connected to the contact portion 1231 and the connecting portion 1232. There are bends between the bent portion 1234 and the contact portion 1231, and between the bent portion 1234 and the connecting portion 1232, thus the first stationary spring portion 123 has two bends in its extending direction. For example, the bent portion 1234 may be approximately perpendicular to the contact portion 1231 and the connecting portion 1232. By providing a bent first stationary spring portion 123, the deformation of the first stationary spring portion 123 can be increased, enhancing the ability of the flexible deformation of the first stationary spring portion 123 to absorb contact stress, thereby further reducing the risk that the first stationary spring portion 123 and the first moving spring portion 121 may deform due to excessive contact stress, affecting contact accuracy. Meanwhile, during the preparation or assembly of the first stationary spring portion 123, by changing the bending angle between the bending portion 1234 and the contact portion 1231 and the connecting portion 1232, the distance between the first stationary contact 1233 and the second stationary contact 1242 in the thickness direction of the base 11 can be adjusted. This simplifies the adjustment process of the height difference between the first stationary contact 1233 and the second stationary contact 1242, allowing the first stationary contact 1233 and the second stationary contact 1242 to adopt the same stationary contact structure without the need to set stationary contact structures with different cap heights. This improves the production efficiency of the relay 10 and reduces production costs.

[0055] Referring again to Figures 3 and 4, in some embodiments, the first stationary spring portion 123 further includes a buffer portion 1235 connected to the contact portion 1231. A buffer protrusion 111 is provided on the base 11, located on the side of the first moving spring portion 121 facing the first stationary spring portion 123. The buffer portion 1235 abuts against the side of the buffer protrusion 111 facing away from the first moving spring portion 121. It is understood that, because the first stationary spring portion 123 is made of a flexible material, when the first moving spring portion 121 moves towards the first stationary spring portion 123 under the action of the pusher 133 until the first moving contact 1211 contacts the first stationary contact 1233, the first stationary spring portion 123 may undergo flexible deformation due to the contact force, causing repeated vibrations and resulting in arc re-ignition and erosion, affecting the performance and reliability of the relay 10. A buffer portion 1235 is provided on the side of the buffer protrusion 111 facing away from the first moving spring portion 121 in the first stationary spring portion 123. When the first stationary spring portion 123 vibrates, the buffer portion 1235 can collide with the buffer protrusion 111 to buffer and suppress the vibration of the first stationary spring portion 123, thereby suppressing the re-ignition erosion phenomenon and improving the performance stability of the relay 10. The position and shape of the buffer portion 1235 are not limited, as long as it can abut against the side of the buffer protrusion 111 facing away from the first moving spring portion 121 to suppress the vibration of the first stationary spring portion 123. In some embodiments, the first stationary spring portion 123 may also be provided with two buffer portions 1235, and the base 11 may be provided with two buffer protrusions 111. The two buffer portions 1235 are connected to both sides of the contact portion 1231 and abut against the side of the two buffer protrusions 111 facing away from the first moving spring portion 121, so as to fully buffer the vibration of the first stationary spring portion 123. In this embodiment, the buffer protrusion 111 may be provided on the base 11 or on the second static spring portion 124, as long as it can abut and cooperate with the buffer portion 1235. The attached figure shows the buffer protrusion 111 being provided on the base 11 as an example.

[0056] In this application, the specific implementation method for making the stroke difference between the first moving spring portion 121 and the first stationary spring portion 123 contacting each other driven by the electromagnetic system 13 less than the stroke difference between the second moving spring portion 122 and the second stationary spring portion 124 contacted by the electromagnetic system 13 is not limited. For example, in some embodiments, the distance between the first moving spring portion 121 and the first stationary spring portion 123 may be less than the distance between the second moving spring portion 122 and the second stationary spring portion 124, so that when the push card 133 synchronously drives the first moving spring portion 121 and the second moving spring portion 122 to move closer to the first stationary spring portion 123 and the second stationary spring portion 124, the first moving spring portion 121 and the first stationary spring portion 123 can make contact first.

[0057] Specifically, referring to Figures 10 and 11, in some embodiments, the ends of the first movable spring portion 121 and the second movable spring portion 122 are both connected to the push card 133 and arranged side by side. In the direction from the first movable spring portion 121 to the first stationary spring portion 123, the assembly positions of the ends of the first movable spring portion 121 and the second movable spring portion 122 on the push card 133 are staggered. The distance between the assembly position of the first movable spring portion 121 on the push card 133 and the first stationary spring portion 123 is less than the distance between the assembly position of the second movable spring portion 122 on the push card 133 and the second stationary spring portion 124. In this embodiment, the portion of the armature 132 facing the push card 133 can be embedded in the push card 133 and movably cooperate with it, so that when the armature 132 rotates relative to the base 11, the push card 133 can drive the first movable spring portion 121 and the second movable spring portion 122 to move. The push card 133 may be provided with a first groove 1331 for assembling the end of the first moving spring portion 121 and a second groove 1332 for assembling the end of the second moving spring portion 122. By setting the positions of the first groove 1331 and the second groove 1332 to be at least partially offset in the direction from the first moving spring portion 121 to the first stationary spring portion 123, the assembly positions of the first moving spring portion 121 and the second moving spring portion 122 on the push card 133 can be controlled to be different. This configuration can reduce the number of parts in the relay 10, reduce the assembly and position adjustment processes of the first moving spring portion 121 and the second moving spring portion 122, and reduce manufacturing costs.

[0058] Referring to Figures 1, 12, and 13, in some embodiments, the electromagnetic system 13 may also include two pushers 133 arranged side by side, with the ends of the first moving spring portion 121 and the second moving spring portion 122 respectively connected to the two pushers 133. When the relay 10 has two pushers 133, the armature 132 can be simultaneously embedded into the two pushers 133 to synchronously drive the two pushers 133 to move. In this embodiment, the different overtravel effects of the two sets of moving spring portions and the stationary spring portions can be achieved by setting the assembly positions of the first moving spring portion 121 and the second moving spring portion 122 on the two pushers 133 to be staggered in the direction from the first moving spring portion 121 to the first stationary spring portion 123.

[0059] Understandably, since one of the two sets of moving springs and one set of two sets of stationary springs serves the function of arc erosion, the first stationary spring 123 and the first moving spring 121, which serve the function of arc erosion, typically have higher temperatures when energized. Therefore, providing two push cards 133 connected to the first moving spring 121 and the second moving spring 122 respectively also allows for the use of push cards 133 made of different materials based on the temperature difference between the first moving spring 121 and the second moving spring 122. For example, the push card 133 connected to the first moving spring 121 can be made of a material with stronger temperature resistance, preventing damage to the push card 133 due to excessively high temperatures of the first moving spring 121 during arc erosion. This helps reduce the manufacturing cost and improve the structural reliability of the relay 10.

[0060] Referring to Figures 1, 2, and 14, in some embodiments, when the electromagnetic system 13 is provided with two side-by-side pushers 133, the armature 132 includes a main body 1321 and a pusher 1322 connected to each other. The main body 1321 is rotatably connected to the base 11, and at least a portion of the pusher 1322 is embedded in the two pushers 133. The main body 1321 can rotate relative to the base 11 under the drive of the coil assembly 131, while the pusher 1322 can move towards or away from the first stationary spring portion 123 under the drive of the active part, so as to push the pushers 133 to drive the first moving spring portion 121 and the second moving spring portion 122 to move. The pusher 1322 can be embedded in the two pushers 133, and on the side of the pusher 1322 facing the first stationary spring portion 123, the distance between the pusher 1322 and the pusher 133 connected to the first moving spring portion 121 is less than the distance between the pusher 133 and the pusher 133 connected to the second moving spring portion 122. In this embodiment, the first moving spring portion 121 and the second moving spring portion 122 can be aligned in the direction from the first moving spring portion 121 to the first stationary spring portion 123.

[0061] Therefore, when the pushing part 1322 moves towards the first stationary spring part 123 under the drive of the main body part 1321, the pushing part 1322 will first contact the pushing card 133 connected to the first moving spring part 121, and push the pushing card 133 to drive the first moving spring part 121 towards the first stationary spring part 123. Then it will contact the pushing card 133 connected to the second moving spring part 122, and push the pushing card 133 to drive the second moving spring part 122 towards the second stationary spring part 124. This achieves the effect that the first moving spring part 121 and the first stationary spring part 123 contact first, and the second moving spring part 122 and the second stationary spring part 124 contact later. During the separation of the two sets of moving springs and the two sets of stationary springs, when the pushing part 1322 moves away from the first moving spring 121 and away from the first stationary spring 123, it first contacts the pushing clip 133 connecting the second moving spring 122, and then contacts the pushing clip 133 connecting the first moving spring 121. This achieves the separation of the second moving spring 122 and the second stationary spring 124 first, and the separation of the first moving spring 121 and the first stationary spring 123 later. By setting the distance relationship between the two opposite sides of the pushing part 1322 and the two pushing clips 133, the contact and separation order of the two sets of moving springs and stationary springs is different. This also helps to simplify the component structure of the relay 10 and reduce the manufacturing cost of the relay 10.

[0062] 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.

[0063] 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 relay, comprising: Base; The contact assembly includes a first moving spring portion, a second moving spring portion, a first stationary spring portion, and a second stationary spring portion, all disposed on the base. The first moving spring portion and the second moving spring portion are electrically connected to each other, and the first stationary spring portion and the second stationary spring portion are electrically connected to each other. The first moving spring portion and the first stationary spring portion are opposite to each other, and the second moving spring portion and the second stationary spring portion are opposite to each other. At least a portion of the first stationary spring portion is capable of flexible deformation. An electromagnetic system is provided on the base and is used to drive the first moving spring portion and the second moving spring portion to move towards or away from the first stationary spring portion and the second stationary spring portion, and the stroke difference between the first moving spring portion and the first stationary spring portion that are driven by the electromagnetic system to contact is less than the stroke difference between the second moving spring portion and the second stationary spring portion that are driven by the electromagnetic system to contact.

2. The relay according to claim 1, wherein the second stationary spring portion includes a fixing part and a second stationary contact, the fixing part is fixedly disposed on the base, the second stationary contact is disposed on the fixing part, and the fixing part is made of a rigid material.

3. The relay according to claim 1, wherein one end of the first moving spring is fixedly disposed on the base and the other end is connected to the electromagnetic system, and the first moving spring is capable of flexible deformation.

4. The relay according to claim 1, wherein the first stationary spring portion includes a contact portion and a connecting portion, the connecting portion being electrically connected to the second stationary spring portion, the contact portion being opposite to the first moving spring portion; the second stationary spring portion is provided with a second stationary contact for contacting the second moving spring portion, at least a portion of the contact portion being located on the side of the second stationary contact facing away from the base.

5. The relay according to claim 4, wherein the connecting portion is fixedly disposed on the second stationary spring portion, and the contact portion extends out of the second stationary spring portion.

6. The relay according to claim 5, wherein the first stationary spring portion further includes a first stationary contact disposed on the contact portion and used to contact the first moving spring portion, the first stationary contact and the second stationary contact being flush.

7. The relay according to claim 5, wherein the first stationary spring portion has at least one bend in the extending direction.

8. The relay according to claim 7, wherein the first stationary spring portion further includes a bent portion with both ends respectively connected to the contact portion and the connecting portion, and there is a bend between the bent portion and the contact portion, and between the bent portion and the connecting portion.

9. The relay according to claim 4, wherein the first stationary spring portion further includes a buffer portion connected to the contact portion, the relay is provided with a buffer protrusion, the buffer protrusion is located on the side of the first moving spring portion facing the first stationary spring portion, and the buffer portion abuts against the side of the buffer protrusion facing away from the first moving spring portion.

10. The relay according to claim 9, wherein the buffer protrusion is disposed on the base, or the buffer protrusion is disposed on the second stationary spring portion.

11. The relay according to any one of claims 1-10, wherein the electromagnetic system includes a coil assembly and an armature, the relay further includes a pusher, the coil assembly is disposed on the base, the armature is movably connected to the base, the pusher is movably connected to the armature, the first moving spring portion and the second moving spring portion are both connected to the pusher, and the armature is able to drive the first moving spring portion and the second moving spring portion to move through the pusher under the electromagnetic force of the coil assembly.

12. The relay according to claim 11, wherein the distance between the first moving spring portion and the first stationary spring portion is less than the distance between the second moving spring portion and the second stationary spring portion.

13. The relay according to claim 12, wherein the first moving spring portion and the second moving spring portion are at least partially misaligned in the direction from the first moving spring portion to the first stationary spring portion, and the distance between the first moving spring portion and the first stationary spring portion is less than the distance between the second moving spring portion and the first stationary spring portion.

14. The relay according to claim 11, wherein the relay includes two push clips arranged side by side, the first moving spring portion and the second moving spring portion are respectively connected to the two push clips, the armature includes a main body portion and a push portion connected to each other, the main body portion is rotatably connected to the base, at least a portion of the push portion is embedded in the two push clips, the push portion is capable of moving towards or away from the first stationary spring portion under the drive of the main body portion, so as to push the push clips to drive the first moving spring portion and the second moving spring portion to move, and on the side of the push portion facing the first stationary spring portion, the distance between the push portion and the push clip connected to the first moving spring portion is less than the distance between the push portion and the push clip connected to the second moving spring portion.

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