Relay

Abstract

Provided in the present disclosure is a relay, comprising a contact assembly and a stopper. The contact assembly comprises two movable spring parts arranged side by side, wherein when the two movable spring parts come into contact with each other, a parallel circuit structure is formed. The stopper is disposed between the two movable spring parts and used to stop the two movable spring parts, such that deflection resulting from bending deformation experienced by the two movable spring parts after attracting each other due to a current passing through the parallel circuit structure is less than or equal to a threshold.

Description

relay

[0001] This disclosure claims priority to Chinese Patent Application No. 202411803073.4, filed on December 09, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of electrical control device technology, and more specifically, to a relay. Background Technology

[0003] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is commonly used in automatic control circuits. Essentially, a relay is an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits.

[0004] Magnetic latching relays, as a type of relay, consist of two sets of moving springs. When the contacts of the two sets of moving springs are in contact, the relay is in a closed state; when the contacts of the two sets of moving springs are separated, the relay is in an open state. However, in related technologies, the contacts of the moving springs are prone to momentary disconnection when closed, which can cause arcing and erosion of the contacts, leading to melting and splashing of the contact material. In severe cases, this can even cause the relay to explode, posing a significant safety hazard. Summary of the Invention

[0005] This disclosure provides a relay to solve the problem of instantaneous disconnection of relay contacts in related technologies.

[0006] The relay of this disclosure embodiment includes:

[0007] A contact assembly includes two side-by-side movable spring portions, which form a parallel circuit structure when they contact each other; and

[0008] A stop is provided between the two moving spring parts to stop the two moving spring parts so that the deflection of the two moving spring parts after they are attracted to each other by the current passing through the parallel circuit structure is less than or equal to a threshold.

[0009] According to some embodiments of this disclosure, the stop member is made of an elastic material and is configured such that the stop member can deform when the two moving spring portions bend and compress the stop member;

[0010] When the deflection of the moving spring portion is equal to the threshold, the suction force between the two moving spring portions is equal to the sum of the first elastic force generated by the deformation of the stop and the second elastic force generated by the deformation of the moving spring portion.

[0011] According to some embodiments of this disclosure, the two moving spring portions are respectively a first moving spring portion and a second moving spring portion. The first moving spring portion includes a first moving spring plate, a first stationary contact, and a second moving contact. The first stationary contact and the second moving contact are respectively disposed at both ends of the length direction of the first moving spring plate. The second moving spring portion includes a second moving spring plate, a first moving contact, and a second stationary contact. The first moving contact and the second stationary contact are respectively disposed at both ends of the length direction of the second moving spring plate. The first moving contact is used to contact or separate from the first stationary contact and forms a first contact group. The second moving contact is used to contact or separate from the second stationary contact and forms a second contact group.

[0012] The stop member is located between the first moving spring and the second moving spring, and between the first contact group and the second contact group.

[0013] According to some embodiments of this disclosure, the relay further includes a housing, the contact assembly and the stop member are located within the housing, and the stop member is connected to the housing.

[0014] According to some embodiments of this disclosure, the stop member and the housing are an integral structure.

[0015] According to some embodiments of this disclosure, the outer shell includes a first shell and a second shell that are interlocked, and the stop is integrally formed on the inner wall surface of the first shell or the inner wall surface of the second shell.

[0016] According to some embodiments of this disclosure, the stop member includes a middle portion, two first stop portions and two second stop portions, wherein the middle portion is provided with the first stop portions and the second stop portions at both ends along the length direction of the contact assembly;

[0017] Along the thickness direction of the contact assembly, two first stops are arranged at intervals, and two second stops are arranged at intervals.

[0018] According to some embodiments of this disclosure, the stop member is a hollow cylindrical structure, one end of which is connected to the outer shell.

[0019] According to some embodiments of this disclosure, the stop member and the outer shell are separate structures.

[0020] According to some embodiments of this disclosure, the inner wall surface of the housing is provided with a slot, and the stop member is inserted into the slot.

[0021] According to some embodiments of this disclosure, the stop member includes a connecting portion and an elastic portion, the connecting portion is connected to the outer shell, the elastic portion is connected to the connecting portion, and has a wavy structure;

[0022] The elastic part includes multiple crest segments and multiple trough segments, which are arranged alternately along the length direction of the contact component.

[0023] According to some embodiments of this disclosure, the stop is made of a rigid material;

[0024] Wherein, when the deflection of the moving spring portion during bending deformation is less than the threshold or no bending deformation occurs, there is a gap between the stop member and the moving spring portion; when the deflection of the moving spring portion during bending deformation is equal to the threshold, the stop member abuts against the moving spring portion.

[0025] According to some embodiments of this disclosure, when the deflection of the two moving spring portions during bending deformation is equal to the threshold, the two moving spring portions remain in contact and form the parallel circuit structure.

[0026] According to some embodiments of this disclosure, when the deflection of the two moving spring portions during bending deformation is greater than the threshold, the two moving spring portions are disconnected or form a series circuit structure.

[0027] An embodiment of the above application has at least the following advantages or beneficial effects:

[0028] The relay of this disclosure includes a stop member disposed between two moving spring portions. This stop member is used to stop the two moving spring portions so that the deflection of the two moving spring portions after they attract each other due to current flowing through the parallel circuit structure is less than or equal to a threshold value. This allows for small bending deformation of the two moving spring portions due to attraction, while preventing excessive bending deformation caused by excessive attraction. On one hand, the stop member ensures that the two moving spring portions can produce small bending deformation, ensuring sufficient attraction between them to resist the electrodynamic repulsion caused by the short-circuit current between the contacts, preventing instantaneous contact disconnection and relay explosion. On the other hand, the stop member prevents large bending deformation of the two moving spring portions, preventing excessive deformation of the moving spring portions and instantaneous contact disconnection, while also avoiding problems such as contact material melting and splashing due to arc erosion and relay explosion. Attached Figure Description

[0029] Figure 1 shows an exploded view of a relay according to an embodiment of the present disclosure.

[0030] Figure 2 shows a schematic diagram of a relay according to an embodiment of the present disclosure with the first housing omitted.

[0031] Figure 3 shows a schematic diagram of the bending deformation of the first and second moving springs.

[0032] Figure 4 shows a schematic diagram of the stop member integrally connected to the inner wall of the second housing according to the first embodiment.

[0033] Figure 5 shows a schematic diagram of the stop member integrally connected to the inner wall of the first housing according to the first embodiment.

[0034] Figure 6 shows a schematic diagram of the stop member integrally connected to the inner wall of the second housing according to the second embodiment.

[0035] Figure 7 shows a schematic diagram of the stop member of the third embodiment installed in the second housing.

[0036] Figure 8 shows a perspective view of the stop member of the third embodiment.

[0037] The reference numerals in the attached drawings are explained as follows: 100, outer casing; 110, first housing; 120, second housing; 121, slot; 200, contact assembly; 200a, first contact group; 200b, second contact group; 210, first moving spring portion; 211, first moving spring leaf; 212, first stationary contact; 213, second moving contact; 220, second moving spring portion; 221, second moving spring leaf; 222, first moving contact; 223, second stationary contact; 300, armature assembly; 310, fixing member; 331, swing shaft; 500, coil assembly; 600, stop member; 610, middle part; 620, first stop part; 630, second stop part; 640, connecting part; 650, elastic part; 651, crest section; 652, trough section. Detailed Implementation

[0038] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0039] It is understood that the terms "comprising" and "having," and any variations thereof, used in the embodiments of this disclosure, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to such processes, methods, products, or apparatus.

[0040] This disclosure provides a relay, which can be a magnetic latching relay, but is not limited thereto. As shown in FIG1, the relay includes a housing 100, a contact assembly 200, an armature assembly 300, and a coil assembly 500. The contact assembly 200 is disposed within the housing 100 and has a closed state and an open state. The armature assembly 300 is disposed within the housing 100 and is used to drive the contact assembly 200 to switch from the closed state to the open state and from the open state to the closed state. The coil assembly 500 is disposed within the housing 100 and is electromagnetically coupled to the armature assembly 300.

[0041] In one embodiment, as shown in FIG1, the outer casing 100 may include a first casing 110 and a second casing 120, which are connected together to form a hollow cavity for accommodating the contact assembly 200, the armature assembly 300, and the coil assembly 500. The shape of the first casing 110 and the second casing 120 after connection can have various embodiments. For example, in the embodiments of this disclosure, the shape of the first casing 110 and the second casing 120 after connection is a hollow cuboid. Of course, in other embodiments, the shape of the first casing 110 and the second casing 120 after connection can also be a hollow cylinder, or other suitable shapes.

[0042] As an example, the second housing 120 is a cuboid shape with an opening, and the contact assembly 200, armature assembly 300, and coil assembly 500 are installed inside the second housing 120 through the opening. The first housing 110 is plate-shaped and is fastened to the opening of the second housing 120 to form a hollow cuboid.

[0043] Of course, in other embodiments, both the first housing 110 and the second housing 120 are cuboid in shape and each has an opening on one side. The opening of the first housing 110 is opposite to the opening of the second housing 120, and the first housing 110 and the second housing 120 are fastened together to form a hollow cavity for accommodating the contact assembly 200, the armature assembly 300 and the coil assembly 500.

[0044] As shown in Figures 1 and 2, the contact assembly 200 includes two moving spring portions arranged side-by-side along the thickness direction of the moving spring portions. Furthermore, the two moving spring portions form a parallel circuit structure when in contact. For ease of explanation, the two moving spring portions are defined as a first moving spring portion 210 and a second moving spring portion 220, respectively.

[0045] The first movable spring portion 210 includes a first movable spring plate 211, a first stationary contact 212, and a second movable contact 213, which are respectively mounted at both ends of the first movable spring plate 211 along its length. As an example, the first stationary contact 212 and the second movable contact 213 can be mounted on the first movable spring plate 211 by riveting, but this is not a limitation.

[0046] The second moving spring portion 220 includes a second moving spring plate 221, a first moving contact 222, and a second stationary contact 223. The first moving contact 222 and the second stationary contact 223 are respectively mounted at both ends of the second moving spring plate 221 along its length. As an example, the first moving contact 222 and the second stationary contact 223 can be mounted on the second moving spring plate 221 by riveting, but this is not a limitation.

[0047] As shown in Figure 2, the first movable spring 211 and the second movable spring 221 are arranged side by side along the thickness direction of the movable springs and are approximately parallel to each other. Along the side-by-side arrangement of the first movable spring 211 and the second movable spring 221, the first movable contact 222 corresponds to the first stationary contact 212, and the first movable contact 222 is used to contact or separate from the first stationary contact 212, forming a first contact group 200a; the second movable contact 213 corresponds to the second stationary contact 223, and the second movable contact 213 is used to contact or separate from the second stationary contact 223, forming a second contact group 200b. The first contact group 200a and the second contact group 200b are arranged at intervals along the length direction of the contact assembly 200.

[0048] When the contact assembly 200 is in the closed state, the first moving contact 222 is in contact with the first stationary contact 212, and the second moving contact 213 is in contact with the second stationary contact 223, so that the first moving spring 211 and the second moving spring 221 form a parallel circuit structure. When the contact assembly 200 is in the open state, the first moving contact 222 is separated from the first stationary contact 212, and the second moving contact 213 is separated from the second stationary contact 223.

[0049] As shown in Figure 1, the relay also includes a fixing member 310, which is fixedly mounted within the housing 100. In one embodiment, the fixing member 310 is connected to the second housing 120, but this is not a limitation. The armature assembly 300 is located on the side of the second moving spring portion 220 facing away from the first moving spring portion 210. The armature assembly 300 is pivotally connected to the fixing member 310 via a pivot shaft 331, which drives the first moving spring 211 and the second moving spring 221 to move, respectively, so that the first moving contact 222 and the second moving contact 213 respectively contact or separate from the first stationary contact 212 and the second stationary contact 223. The coil assembly 500 is configured to drive the armature assembly 300 to pivot relative to the fixing member 310 in response to an input signal.

[0050] It should be noted that, in their research, the inventors of this disclosure discovered that when the contact assembly 200 is in the closed state, the first moving spring portion 210 and the second moving spring portion 220 form a parallel circuit structure. The first moving spring 211 and the second moving spring 221 are approximately parallel, and the current direction through the first moving spring 211 is the same as the current direction through the second moving spring 221. Therefore, the first moving spring 211 and the second moving spring 221 attract each other. When a large current flows through the contact assembly 200, a large attraction force can be generated between the first moving spring 211 and the second moving spring 221, causing the first moving spring 211 and the second moving spring 221 to change from their original parallel arrangement to bending and deforming in a direction closer to each other (as shown in Figure 3).

[0051] For ease of explanation, the bending deformation of the second moving spring 221 will be used as an example below. The first moving spring 211 can be referred to in the same way as the second moving spring 221, and will not be described again here. When the bending deformation of the second moving spring 221 is large, the middle part of the second moving spring 221 will tilt upwards, causing the free end of the second moving spring 221 (the end with the moving contact) to tilt downwards. This causes the outer side of the first moving contact 222 on the second moving spring 221 to disconnect from the first stationary contact 212, resulting in a contact break. At the same time, when the bending deformation of the second moving spring 221 continues to increase, the free end of the second moving spring 221 will apply a resisting force to the armature assembly 300. This resisting force will drive the armature assembly 300 to swing in the direction of contact breakage, ultimately causing the relay contacts to momentarily disconnect and resulting in contact damage and relay failure.

[0052] The above analysis shows that the attraction between the first moving spring 211 and the second moving spring 221, resulting in a large bending deformation, can cause the contact to momentarily disconnect.

[0053] Based on this, as shown in FIG2, the relay of this embodiment further includes a stop member 600. The stop member 600 is connected to the inner wall surface of the second housing 120 and is disposed between the first moving spring portion 210 and the second moving spring portion 220. It is used to stop the first moving spring portion 210 and the second moving spring portion 220 so that the deflection of the two moving spring portions after they are attracted to each other due to the current passing through the parallel circuit structure is less than or equal to a threshold.

[0054] The relay of this disclosure includes a stop member 600 disposed between two moving spring portions. The stop member 600 stops the two moving spring portions so that the deflection of the two moving spring portions after they attract each other due to current flowing through the parallel circuit structure is less than or equal to a threshold. This allows for small bending deformation of the two moving spring portions due to attraction, while preventing excessive bending deformation caused by over-attraction. On one hand, the stop member 600 ensures that the two moving spring portions can generate small bending deformation, ensuring sufficient attraction between them to resist the electrodynamic repulsion caused by short-circuit current between the contacts, preventing instantaneous contact disconnection and relay explosion. On the other hand, the stop member 600 prevents large bending deformation of the two moving spring portions, preventing excessive deformation of the moving spring portions and instantaneous contact disconnection, while also avoiding problems such as contact material melting and splashing due to arc erosion and relay explosion.

[0055] When the deflection of the two moving springs equals the threshold, the two moving springs remain in contact and form a parallel circuit structure. When the deflection of the two moving springs exceeds the threshold, the two moving springs either disconnect or form a series circuit structure.

[0056] Specifically, when the two moving springs are disconnected, it means that both the first contact group 200a and the second contact group 200b are disconnected, that is, the first moving contact 222 is disconnected from the first stationary contact 212, and the second moving contact 213 is disconnected from the second stationary contact 223; when the two moving springs form a series circuit structure, it means that one of the first contact group 200a and the second contact group 200b is disconnected, that is, the first moving contact 222 is disconnected from the first stationary contact 212, while the second moving contact 213 is closed from the second stationary contact 223, or the first moving contact 222 is closed from the first stationary contact 212, while the second moving contact 213 is disconnected from the second stationary contact 223.

[0057] It should be noted that the function of the stop 600 is to prevent the first moving spring 211 and the second moving spring 221 from undergoing excessive bending deformation, but it does not prohibit the first moving spring 211 and the second moving spring 221 from undergoing bending deformation within a controllable range. That is, it is allowed when the deflection of the first moving spring 211 and the second moving spring 221 is less than or equal to the threshold.

[0058] The bending deformation process of the first moving spring 211 and the second moving spring 221 will be explained in detail below with reference to Figure 3. When the first moving spring 211 and the second moving spring 221 undergo bending deformation within a controllable range, for example, the first moving spring 211 is bent into state A1 and the second moving spring 221 is bent into state A2, since the deflection of the first moving spring 211 and the second moving spring 221 during bending deformation is small and less than the threshold, it will not cause the contact to momentarily disconnect, and it will ensure that sufficient attraction can be generated between the first moving spring 211 and the second moving spring 221 to resist the electrodynamic repulsion. Therefore, the deflection of bending deformations A1 and A2 is permissible.

[0059] When the first moving spring 211 and the second moving spring 221 undergo significant bending deformation, for example, the first moving spring 211 is bent into state B1 and the second moving spring 221 is bent into state B2, if the deflection of the bending deformation of the two moving springs reaches the threshold, since the deflection of the bending deformation of the first moving spring 211 and the second moving spring 221 is not greater than the threshold, the two moving spring parts still remain in contact and form a parallel circuit structure. Therefore, the deflection of the bending deformation of B1 and B2 is permissible at this time.

[0060] Referring again to Figure 3, no stop is provided between the first moving spring 211 and the second moving spring 221. Due to excessive engagement, the middle part of the moving springs 211 and 221 is excessively raised, and the contact points at both ends are excessively tilted. For example, the first moving spring 211 is bent and deformed into state C1, and the second moving spring 221 is bent and deformed into state C2. If the deflection of the bending deformation of the two moving springs is greater than the threshold, then the deflection of bending deformation C1 and C2 is prohibited.

[0061] In summary, it is permissible when the deflection of the bending deformation of the first moving spring 211 and the second moving spring 221 is less than or equal to the threshold (e.g., the bending states of A1 and A2 or B1 and B2); it is prohibited when the deflection of the bending deformation of the first moving spring 211 and the second moving spring 221 is greater than the threshold (e.g., the bending states of C1 and C2).

[0062] It should be noted that the "threshold" here refers to the upper limit of deflection, which is related to various factors, such as: the magnitude of the reaction force generated when the first moving spring 211 and the second moving spring 221 undergo bending deformation, the magnitude of the attraction between the first moving spring 211 and the second moving spring 221, the elastic modulus of the materials of the first moving spring 211 and the second moving spring 221, the length of the first moving spring 211 and the second moving spring 221, and the armature holding force, etc. Therefore, the value of the "threshold" is not constant and should be specifically limited according to different relays.

[0063] As shown in Figure 2, the stop member 600 is located between the first moving spring 211 and the second moving spring 221, and between the first contact group 200a and the second contact group 200b.

[0064] In one embodiment, the stop 600 may be made of an elastic material and is configured such that the stop 600 can deform when the two movable spring portions bend and compress it. When the deflection of the movable spring portions equals a threshold value, the suction force between the two movable spring portions is equal to the sum of a first elastic force generated by the deformation of the stop 600 and a second elastic force generated by the deformation of the movable spring portions. The elastic material may be rubber, plastic, or other materials that provide elastic force upon deformation.

[0065] When the first movable spring 211 and the second movable spring 221 are attracted to each other and press against the stop member 600, the stop member 600, being made of elastic material, will deform and provide a first elastic force to the first movable spring 211 and the second movable spring 221. Since the deformation amplitude of the stop member 600 in the initial stage of deformation is small, the provided first elastic force is also small.

[0066] From the perspective of resisting electrodynamic repulsion, when the moving spring contacts the stop 600, since the stop 600 is made of elastic material, the first moving spring 211 and the second moving spring 221 can compress the stop 600 and produce bending deformation within a controllable range when they attract each other. It can be seen that the characteristic of the stop 600 to deform under pressure provides elastic deformation space for the first moving spring 211 and the second moving spring 221, allowing them to bend within a deflection range less than or equal to a threshold, thus meeting the requirement for the amount of elastic deformation needed to resist electrodynamic repulsion.

[0067] From the perspective of avoiding momentary disconnection of contacts, when a large current flows through the first moving spring 211 and the second moving spring 221, the attraction between them is very strong, causing them to tend to bend significantly. As the first moving spring 211 and the second moving spring 221 gradually press against the stop member 600, the deformation of the stop member 600 also increases until the sum of the first elastic force generated by the deformation of the stop member 600 and the second elastic force generated by the deformation of the moving spring equals the attraction force. At this point, the first moving spring 211 and the second moving spring 221 will no longer bend. Therefore, the stop member 600 serves to prevent excessive bending deformation of the first moving spring 211 and the second moving spring 221.

[0068] As shown in Figure 4, the stop 600 is connected to the inner wall of the second housing 120. Furthermore, the stop 600 and the second housing 120 are an integral structure.

[0069] As shown in Figure 5, the stop 600 is connected to the inner wall of the first housing 110. Furthermore, the stop 600 and the first housing 110 are an integral structure.

[0070] As shown in Figure 4, the stop member 600 includes a middle part 610, two first stop parts 620 and two second stop parts 630. The middle part 610 is provided with first stop parts 620 and second stop parts 630 at both ends along the length direction of the contact assembly 200. Along the thickness direction of the contact assembly 200, the two first stop parts 620 are arranged at intervals, and the two second stop parts 630 are arranged at intervals.

[0071] When the first moving spring 211 and the second moving spring 221 bend and deform, the first moving spring 211 simultaneously presses one of the first stop portions 620 and one of the second stop portions 630, and the second moving spring 221 simultaneously presses the other first stop portion 620 and the other second stop portion 630, so that the two first stop portions 620 move closer to each other and the two second stop portions 630 move closer to each other.

[0072] As shown in Figure 6, the stop 600 can also be a hollow cylindrical structure, with one end of the cylindrical structure connected to the inner wall of the second housing 120.

[0073] In this embodiment of the present disclosure, since the stop member 600 is a hollow cylindrical structure, when the first moving spring 211 and the second moving spring 221 press against both sides of the cylindrical structure, the cylindrical structure can produce a slight deformation, preventing the first moving spring 211 and the second moving spring 221 from undergoing excessive bending deformation.

[0074] It should be noted that the cross-sectional shape of the cylindrical structure can be circular, elliptical, or other shapes that can deform under pressure and provide elastic force.

[0075] Of course, in other embodiments, one end of the cylindrical structure may also be connected to the inner wall of the first housing 110.

[0076] In one embodiment, the stop 600 and the housing 100 can also be separate structures. For example, the stop 600 is mounted on the second housing 120, or the stop 600 is mounted on the first housing 110.

[0077] As shown in Figure 7, the inner wall of the second housing 120 is provided with a slot 121, and the stop 600 is inserted into the slot 121. Of course, in other embodiments, the stop 600 can also be connected to the outer shell 100 by snap-fitting, gluing, riveting, welding, etc., which will not be listed here.

[0078] As shown in Figure 8, the stop member 600 includes a connecting portion 640 and an elastic portion 650. The connecting portion 640 is connected to the housing 100, for example, the connecting portion 640 is inserted into a slot 121 of the second housing 120. The elastic portion 650 is connected to the connecting portion 640 and has a wave-like structure. The elastic portion 650 includes a plurality of crest segments 651 and a plurality of trough segments 652, which are arranged alternately along the length direction of the contact assembly 200.

[0079] When the first moving spring 211 and the second moving spring 221 bend and deform, the first moving spring 211 compresses multiple wave crests 651, and the second moving spring 221 compresses multiple wave troughs 652.

[0080] It should be added that the stop 600 is not limited to being made of elastic material; for example, the stop 600 can also be made of rigid material.

[0081] When the stop member 600 is made of a rigid material, when the deflection of the first movable spring 211 and the second movable spring 221 is less than the threshold or no bending deformation occurs, there is a gap between the stop member 600 and both the first movable spring 211 and the second movable spring 221. When the deflection of the movable spring portion is equal to the threshold, the stop member 600 abuts against the first movable spring 211 and the second movable spring 221, respectively.

[0082] In this embodiment of the present disclosure, the gap provides a certain deformation space for the first movable spring 211 and the second movable spring 221, allowing them to undergo bending deformation within a controllable range when they attract each other. When the deflection of the first movable spring 211 and the second movable spring 221 reaches a threshold, the stop member 600 abuts against the first movable spring 211 and the second movable spring 221 respectively to prevent excessive bending deformation of the first movable spring 211 and the second movable spring 221.

[0083] In summary, the relays of the present disclosure embodiments have at least the following advantages and beneficial effects:

[0084] The relay of this disclosure includes a stop member 600 disposed between two moving spring portions. The stop member 600 stops the two moving spring portions so that the deflection of the two moving spring portions after they attract each other due to current flowing through the parallel circuit structure is less than or equal to a threshold value. This allows for small bending deformation of the two moving spring portions due to attraction, while preventing excessive bending deformation caused by over-attraction. On one hand, the stop member 600 ensures that the two moving spring portions can generate small bending deformation, ensuring sufficient attraction between them to resist the electrodynamic repulsion caused by the short-circuit current between the contacts, preventing instantaneous contact disconnection and relay explosion. On the other hand, the stop member 600 prevents large bending deformation of the two moving spring portions, preventing excessive deformation of the moving spring portions and instantaneous contact disconnection, while also avoiding problems such as contact material melting and splashing due to arc erosion and relay explosion.

[0085] It is understood that the various embodiments / implementations provided in this disclosure can be combined with each other without creating contradictions, and will not be described in detail here.

[0086] In the disclosed embodiments, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the disclosed embodiments according to the specific circumstances.

[0087] In the description of the disclosed embodiments, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the disclosed embodiments and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the disclosed embodiments.

[0088] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the disclosed embodiments. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0089] The above are merely preferred embodiments of the disclosed embodiments and are not intended to limit the disclosed embodiments. For those skilled in the art, the disclosed embodiments can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the disclosed embodiments should be included within the protection scope of the disclosed embodiments.

Claims

1. A relay, characterized in that, include: The contact assembly includes two side-by-side moving spring portions, which form a parallel circuit structure when they come into contact with each other; as well as A stop is provided between the two moving spring parts to stop the two moving spring parts so that the deflection of the two moving spring parts after they are attracted to each other by the current passing through the parallel circuit structure is less than or equal to a threshold.

2. The relay according to claim 1, characterized in that, The stop member is made of an elastic material and is configured such that the stop member can deform when the two moving spring portions bend and compress the stop member; When the deflection of the moving spring portion is equal to the threshold, the suction force between the two moving spring portions is equal to the sum of the first elastic force generated by the deformation of the stop and the second elastic force generated by the deformation of the moving spring portion.

3. The relay according to claim 1, characterized in that, The two moving spring parts are a first moving spring part and a second moving spring part. The first moving spring part includes a first moving spring plate, a first stationary contact, and a second moving contact. The first stationary contact and the second moving contact are respectively disposed at both ends of the length direction of the first moving spring plate. The second moving spring part includes a second moving spring plate, a first moving contact, and a second stationary contact. The first moving contact and the second stationary contact are respectively disposed at both ends of the length direction of the second moving spring plate. The first moving contact is used to contact or separate from the first stationary contact and forms a first contact group. The second moving contact is used to contact or separate from the second stationary contact and forms a second contact group. The stop member is located between the first moving spring and the second moving spring, and between the first contact group and the second contact group.

4. The relay according to any one of claims 1-3, characterized in that, The relay also includes a housing, the contact assembly and the stop are located inside the housing, and the stop is connected to the housing.

5. The relay according to claim 4, characterized in that, The stop member and the outer shell are an integral structure.

6. The relay according to claim 5, characterized in that, The outer shell includes a first shell and a second shell that are interlocked, and the stop is integrally formed on the inner wall surface of the first shell or the inner wall surface of the second shell.

7. The relay according to claim 5, characterized in that, The stop member includes a middle part, two first stop parts and two second stop parts, and the middle part is provided with the first stop parts and the second stop parts at both ends along the length direction of the contact assembly; Along the thickness direction of the contact assembly, two first stops are arranged at intervals, and two second stops are arranged at intervals.

8. The relay according to claim 5, characterized in that, The stop is a hollow cylindrical structure, and one end of the cylindrical structure is connected to the outer shell.

9. The relay according to claim 4, characterized in that, The stop and the outer shell are separate structures.

10. The relay according to claim 9, characterized in that, The inner wall of the housing is provided with a slot, and the stop is inserted into the slot.

11. The relay according to claim 9, characterized in that, The stop member includes a connecting part and an elastic part. The connecting part is connected to the outer shell, and the elastic part is connected to the connecting part and has a wavy structure. The elastic part includes multiple crest segments and multiple trough segments, which are arranged alternately along the length direction of the contact component.

12. The relay according to claim 1, characterized in that, The stop is made of a rigid material; Wherein, when the deflection of the moving spring portion during bending deformation is less than the threshold or no bending deformation occurs, there is a gap between the stop member and the moving spring portion; when the deflection of the moving spring portion during bending deformation is equal to the threshold, the stop member abuts against the moving spring portion.

13. The relay according to claim 1, characterized in that, When the deflection of the two moving spring portions during bending deformation is equal to the threshold, the two moving spring portions remain in contact and form the parallel circuit structure.

14. The relay according to claim 1, characterized in that, When the deflection of the two moving springs exceeds the threshold, the two moving springs either disconnect or form a series circuit structure.

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