Relay

Abstract

The invention discloses a relay, and belongs to the technical field of relays. The relay comprises a pushing assembly; the movable contact assembly comprises a movable contact piece and a compression spring, and the compression spring is connected between the pushing assembly and the movable contact piece in an abutting mode and used for providing contact pressure for the movable contact piece in the overtravel stage; and the first elastic piece acts on the pressure spring and at least partially applies auxiliary pressure to the pressure spring in the non-contact stage and the over-travel stage, and the direction of at least part of component force of the auxiliary pressure is the same as the direction of the contact pressure applied by the pressure spring.

Description

Technical Field

[0001] This application belongs to the field of relay technology, and specifically relates to a relay. Background Technology

[0002] 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.

[0003] Typically, a relay includes a coil, an armature assembly, a stationary iron core, a magnetic conductor, a moving contact, and a stationary contact. The armature assembly and the moving contact are connected by a pushing mechanism. Once the coil is energized, the armature assembly moves to the position of the stationary iron core, and the armature assembly, through the pushing mechanism, drives the moving contact towards the stationary contact. When the moving contact of the moving contact contacts the stationary contact, the armature assembly continues to move, causing the moving contact to overtravel, resulting in a tight contact between the moving and stationary contacts. However, in practical applications, when the moving contact contacts the stationary contact, it is prone to bouncing and repeated arcing, which affects the contact life, and its ability to resist electrodynamic repulsion is weak when a fault current occurs. Summary of the Invention

[0004] This application aims to provide a relay that at least solves the problem that when the moving contact is in contact with the stationary contact, the moving contact is prone to bouncing and repeated arcing, which affects the contact life.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows: This application provides a relay, the relay comprising: Drive components; A movable contact assembly, comprising a movable contact and a compression spring, the compression spring abutting between the push assembly and the movable contact to provide contact pressure to the movable contact during the overtravel phase; A first elastic element acts on the compression spring and applies auxiliary pressure to the compression spring at least partially during the non-contact phase and the overtravel phase, wherein at least a portion of the auxiliary pressure has a force in the same direction as the contact pressure applied by the compression spring.

[0006] Optionally, the first elastic element acts on the compression spring at a position between the compression spring and the positions where it abuts against the pushing assembly and the moving contact.

[0007] Optionally, the first elastic element is mounted on the pushing assembly, and the auxiliary pressure applied by the first elastic element remains unchanged during the non-contact phase.

[0008] Optionally, as the overtravel gradually increases, the auxiliary pressure applied by the first elastic element gradually increases.

[0009] Optionally, as the overtravel gradually increases, the position of the first elastic element acting on the compression spring gradually approaches the position where the compression spring abuts against the moving contact.

[0010] Optionally, the first elastic member has a first abutment point, a second abutment point, and an abutment end sequentially arranged in its extension direction; the first abutment point abuts against the pushing component and is fixed relative to the pushing component; the abutment end abuts against the compression spring; during overtravel, the first elastic member is adapted to deform with the second abutment point as the fulcrum, and during deformation, the first elastic member is compressed and further stores energy, and the abutment end displaces toward the side away from the first abutment point.

[0011] Optionally, the moving contact assembly includes at least two moving contacts suitable for parallel connection, or the moving contacts are provided with at least two moving contact branches suitable for parallel connection; at least one of the moving contacts is correspondingly provided with the first elastic element, or at least one of the moving contact branches is correspondingly provided with the first elastic element.

[0012] Optionally, the compression spring acts on the movable contact at the location of the movable contact point.

[0013] Optionally, the movable contact includes a movable contact plate and movable contacts, wherein the movable contact plate has a first surface and a second surface on both sides in the thickness direction; and the movable contacts are respectively provided at both ends of the second surface along the first direction. The first elastic member has a first end and a second end opposite to each other along a first direction; Both the first end and the second end abut against the compression spring. The compression spring has a first connecting end and a second connecting end opposite each other along the first direction. The side of the first connecting end and the second connecting end away from the first elastic member is connected to the second surface. The position where the pushing assembly abuts against the compression spring is located between the first connecting end and the second connecting end. In the first direction, the position where the first end abuts against the compression spring is located between the position where the pushing assembly abuts against the compression spring and the first connecting end, and the position where the second end abuts against the compression spring is located between the position where the pushing assembly abuts against the compression spring and the second connecting end.

[0014] Optionally, in the second direction, the position where the first end abuts against the compression spring is opposite to the movable contact point at one end of the movable contact plate, and the position where the second end abuts against the compression spring is opposite to the movable contact point at the other end of the movable contact plate, wherein the second direction is the direction of action of the movable contact member.

[0015] Optionally, the compression spring further includes a first bent portion, a middle portion, and a second bent portion connected sequentially along the first direction. The middle portion is connected to the pushing assembly. The first bent portion is connected to the first connecting end so that the middle portion and the first connecting end are offset along the second direction. The second bent portion is connected to the second connecting end so that the middle portion and the second connecting end are offset along the second direction. Wherein, both the first end and the second end abut against the middle portion; or, the first end abuts against the position where the middle portion connects to the first bent portion, and the second end abuts against the position where the middle portion connects to the second bent portion.

[0016] Optionally, the first elastic member includes a third bending portion, a connecting portion, and a fourth bending portion connected in sequence; The connecting portion abuts against and is fixed relative to the pushing component; the end of the third bent portion away from the connecting portion abuts against the compression spring; the end of the fourth bent portion away from the connecting portion abuts against the compression spring; and both the third bent portion and the fourth bent portion abut against the pushing component. When the moving contact travels beyond its travel range, the positions where the third bend abuts against the pushing component and the positions where the fourth bend abuts against the pushing component are both compressed, causing both the third and fourth bends to deform, and increasing the contact pressure provided by the third and fourth bends to the compression spring.

[0017] Optionally, both the third bending portion and the fourth bending portion include a first bending arm and a second bending arm, one end of the first bending arm is connected to the connecting portion, the other end of the first bending arm is connected to one end of the second bending arm, and the end of the other end of the second bending arm abuts against the compression spring. Wherein, the first bending arm and the second bending arm form an angle with the opening facing the compression spring, and part of the second bending arm abuts against the pushing component, or, the connection position where the first bending arm and the second bending arm are connected abuts against the pushing component.

[0018] Optionally, the other end of the second bent arm is connected to an abutment structure, the abutment structure having an arc-shaped abutment surface that abuts against the compression spring.

[0019] Optionally, the abutment structure includes at least one folded wall, which is located between the second bent arm and the compression spring; When there is one folding wall, the folding wall is stacked on top of the other end of the second bending arm and connected to the second bending arm by an arc connecting section, and the folding wall abuts against the compression spring; When there are multiple folded walls, the multiple folded walls are stacked and connected to each other, and the multiple folded walls are connected by arc connecting segments, and / or, two of the multiple folded walls that are far from the second bending arm are connected by arc connecting segments; the folded wall that abuts against the compression spring has the abutting surface.

[0020] Optionally, the relay further includes a second elastic element and a housing; The displacement of the two ends of the second elastic member along the first direction in the second direction is limited by the housing. The middle part of the second elastic member is connected to the pushing assembly and / or the moving contact assembly. The second elastic member is supported by the housing of the relay along the third direction and cooperates with the housing to limit the displacement of the moving contact assembly along the first direction.

[0021] Optionally, the relay further includes stationary contacts that respectively cooperate with the moving contacts at both ends of the moving contact plate; the relay has a closed state and an open state; When the relay is in the closed or open state, the second elastic element applies force to the pushing component and the moving contact component in the direction of the stationary contact.

[0022] Optionally, when the relay is in the open state, the magnitude of the force applied by the second elastic element to the pushing component and the moving contact component is a first value, and when the relay is in the closed state, the magnitude of the force applied by the second elastic element to the pushing component and the moving contact component is a second value, wherein the first value is greater than the second value.

[0023] Optionally, the second elastic member includes a first elastic arm, a mounting portion, and a second elastic arm connected sequentially along the first direction; The mounting portion is connected to the pushing component, and the end of the first elastic arm away from the mounting portion and the end of the second elastic arm away from the mounting portion are respectively limited and engaged with the housing along the second direction; When the relay is in the closed state, there is a first angle between the first elastic arm and the mounting part, and there is a first angle between the second elastic arm and the mounting part; when the relay is in the open state, there is a second angle between the first elastic arm and the mounting part, and there is a second angle between the second elastic arm and the mounting part, and the first angle is smaller than the second angle.

[0024] Optionally, the two ends of the second elastic member opposite each other along the first direction are provided with limiting structures. The limiting structures are used to cooperate with the housing to limit the displacement of the second elastic member in the first direction and to limit the displacement of the two ends of the second elastic member along the first direction along the second direction.

[0025] Optionally, the housing is provided with a limiting member; the limiting structure includes a limiting piece, the limiting piece is provided with a limiting hole, and the limiting member passes through the limiting hole along the third direction.

[0026] Optionally, the dimension of the limiting hole along the first direction is greater than the dimension of the portion of the limiting member located within the limiting hole along the first direction, so that both ends of the second elastic member can extend and retract during the movement of the moving contact assembly; and / or, the dimension of the limiting hole along the second direction matches the dimension of the portion of the limiting member located within the limiting hole along the second direction.

[0027] Optionally, the second elastic element and the first elastic element are integrally formed.

[0028] Optionally, the first elastic member is provided with a first fixing hole, the compression spring is provided with a second fixing hole, and the pushing assembly is provided with a fixing boss. The fixing boss passes through the first fixing hole and the second fixing hole along a second direction to restrict the displacement of the first elastic member and the compression spring relative to the pushing assembly along the first direction and the third direction. Along the second direction, the first elastic member presses against the compression spring and the pushing assembly.

[0029] Optionally, each of the moving contacts is arranged in parallel along a third direction, and some of the moving contacts are arc-ignition moving contacts and some of the moving contacts are current-carrying moving contacts; when the relay is in the open state, the contact gap of the moving contacts on the arc-ignition moving contacts is smaller than the contact gap of the moving contacts on the current-carrying moving contacts; the current-carrying moving contacts are correspondingly provided with the first elastic element.

[0030] Optionally, the number of moving contacts is three, and the three moving contacts are arranged side by side along a third direction. The moving contact in the middle of the three moving contacts is an arc-ignition moving contact, and the two moving contacts on both sides are flow-carrying moving contacts. The first elastic element is provided on each of the two moving contacts located on both sides.

[0031] Through research and experimentation, the applicant discovered that in practical applications of existing technologies, the moving contact is prone to bouncing and repeated arcing when it comes into contact with the stationary contact, thus affecting the contact life. This is because in existing structures, due to the long compression spring and the large distance between the pressure point (fulcrum) and the force application point, the compression efficiency of the spring is low. In addition, the driving force of the electromagnetic part is relatively small in the initial contact stage. Therefore, when the moving contact comes into contact with the stationary contact, the moving contact bridge is prone to bouncing and repeated arcing, thus affecting the contact life. Furthermore, the electro-repulsive force generated during a fault with a large current impact can also easily cause the moving contact to slightly spring open, resulting in the risk of contact splashing, or even springing open and exploding.

[0032] In this embodiment, since the compression spring abuts against the push assembly and the moving contact, it provides contact pressure to the moving contact during the overtravel phase, ensuring tight contact between the moving contact and the stationary contact of the relay. Additionally, the first elastic element acts on the compression spring, applying auxiliary pressure. The compression spring transmits this auxiliary pressure to the moving contact, making it less prone to bouncing when in contact with the stationary contact. This reduces the likelihood of repeated arcing and improves the lifespan of the moving contact. In other words, in this embodiment, the first elastic element acts elastically on the compression spring and provides auxiliary pressure in both the non-contact stage and the overtravel stage. The compression spring acts elastically on the moving contact, and the moving contact is subjected to double elastic pressure, so that the moving contact obtains effective and reliable contact pressure in the initial stage of contact with the stationary contact. The pressurization efficiency is high, which can resist the influence of the contact electric repulsion force at the initial contact between the moving contact and the stationary contact, and avoid the moving contact from rebounding due to high kinetic energy. This avoids the problem of the moving contact easily bouncing and affecting the contact life, and ensures the provision of reliable fault current resistance. In addition, during the entire overtravel process, the pressure system composed of the first elastic element and the compression spring always maintains a high neck. Under the same contact pressure, the required overall deformation is smaller. Therefore, the operating voltage required by the drive part of the relay to drive the moving component can be smaller, saving energy and volume. Correspondingly, it is beneficial to reduce the movement stroke of the drive part and improve magnetic efficiency.

[0033] The relay provided in this application embodiment also has the following advantages: (1) The first elastic element is installed on the push assembly, and the auxiliary pressure applied by the first elastic element remains unchanged during the non-contact stage. Compared with other components where the first elastic element is installed outside the push assembly, the auxiliary pressure applied by the first elastic element remains unchanged during the non-contact stage, thereby making the auxiliary pressure applied by the first elastic element more reliable, and able to start working better at the initial stage of contact. It also avoids the need to increase the release voltage required for release or the drive voltage required for closing when the entire push assembly is subjected to external force. In addition, the installation of the first elastic element on the push assembly can also improve the structural compactness of the relay, which is conducive to reducing the space occupied by the first elastic element, and thus conducive to reducing the size of the relay. (2) The position where the first elastic element acts on the compression spring is located between the positions where the compression spring abuts against the push assembly and the moving contact respectively. At the moment of contact and during the overtravel phase after contact, the fulcrum applied to the compression spring is located near the middle of the compression spring, which reduces the leverage effect, shortens the force transmission path, reduces energy loss, and makes the compression spring deform more uniformly. This can improve the compression efficiency of the compression spring and increase the contact pressure that the compression spring can provide, and reduce the risk of local stress concentration. (3) As the overtravel gradually increases, the auxiliary pressure applied by the first elastic element gradually increases. As the overtravel gradually increases, the presence of the first elastic element can effectively ensure that the moving contact and the stationary contact are in close contact, effectively avoiding the problem that the moving contact and the stationary contact are not in firm contact, which will affect the performance of the relay. In addition, a relatively small auxiliary pressure is provided at the initial stage of contact to reduce the probability of the moving contact bouncing due to the large kinetic energy and the large initial electric repulsion. Compared with a relatively large auxiliary pressure at the initial stage of contact, it can reduce the driving force required by the drive part in the overtravel phase, ensure that the moving contact can make reliable contact and save energy. A relatively large auxiliary pressure is provided at the end of the overtravel to ensure contact reliability and reliable short-circuit resistance. (4) As the overtravel gradually increases, the position of the first elastic element acting on the compression spring gradually approaches the position where the compression spring and the moving contact abut. As the overtravel gradually increases, the transmission point of the auxiliary pressure provided by the first elastic force is closer to the position where the compression spring and the moving contact abut, which is conducive to the rapid transmission of the auxiliary pressure provided by the first elastic element to the compression spring, so that the compression spring can quickly provide contact pressure to the moving contact, which is conducive to the tight contact between the moving contact and the stationary contact. In addition, as the position of the first elastic element acting on the compression spring gradually approaches the position where the compression spring and the moving contact abut, the stiffness coefficient of the pressure system composed of the first elastic element and the compression spring can also gradually increase, so that the contact pressure provided after the overtravel ends is reliable. Furthermore, compared with providing a higher stiffness coefficient at the beginning of the overtravel, it can also avoid the failure of the suction force matching and excessive energy consumption.(5) When the relay is in the open state, the force applied by the second elastic element to the compression spring is the first value, and when the relay is in the closed state, the force applied by the second elastic element to the compression spring is the second value. The first value is greater than the second value. This means that when the relay is in the open state, the force applied by the second elastic element is greater than the force applied by the second elastic element when the relay is in the closed state. Therefore, when the contact gap between the moving contact and the stationary contact is larger, it is beneficial for the moving contact to contact the stationary contact, which is beneficial for the relay to close, improves the closing efficiency, reduces the normally open voltage and energy consumption, and also helps to reduce the bounce of the moving contact. This increases the pressure of the moving contact to contact the stationary contact, which increases the closing pressure of the relay, and thus helps to improve the short-circuit resistance of the relay. In addition, when the relay is open, the second elastic element applies resistance to the pusher, which enables the relay to open stably. This allows for better control of the larger gap between the moving contact and the stationary contact. The breaking arc of the relay can be stably burned when it is opened, preventing the arc from deviating from the contact. This allows the pusher assembly and the moving contact to stop more stably and avoids bounce. Attached Figure Description

[0034] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an exploded view of a relay provided in an embodiment of this application; Figure 2 This is a front view of an integrated structure of a first elastic element and a second elastic element provided in an embodiment of this application; Figure 3 This is a front view of a relay provided in an embodiment of this application; Figure 4 This is a cross-sectional view showing the contact between the moving contact and the stationary contact of a relay provided in an embodiment of this application; Figure 5 This is a cross-sectional view showing the moving contact of a relay being disconnected from the stationary contact, according to an embodiment of this application. Figure 6 This is an exploded view of another relay provided in an embodiment of this application; Figure 7 This diagram illustrates a push component connecting a first elastic element and a second elastic element, as provided in an embodiment of this application.

[0035] Figure label: 10: Pushing component; 101: Fixing boss; 20: First elastic element; 21: Third bending part; 22: Connecting part; 23: Fourth bending part; 200: First fixing hole; 201: First end; 202: Second end; 211: First bending arm; 212: Second bending arm; 213: Abutting structure; 2001: First abutting point; 2002: Second abutting point; 2003: Abutting end; 2131: Folding wall; 30: Moving contact component; 31: Moving contact element; 32: Compression spring; 311: Moving contact plate; 312: Moving contact point; 320: Second fixing hole; 321: First elastic element; 202: Third bending part; 203: Connecting part; 204: Fourth bending part; 205: First fixing hole; 206: First fixing hole; 207: First fixing hole; 208: Second fixing hole; 209: First fixing hole; 200: Second fixing hole; 200: Second fixing hole; 201: Second fixing hole; 202: Second fixing hole; 200: First fixing hole; 201: Second fixing hole; 202: Second fixing hole; 202: Second fixing hole; 202: Second fixing hole; 203: Third fixing hole; 200: First fixing hole; 201: Second fixing hole; 202 ... 322: Second connecting end; 3101: Arc-ignition moving contact; 3102: Carrying moving contact; 3111: First surface; 3112: Second surface; 3201: First bending portion; 3202: Middle portion; 3203: Second bending portion; 40: Second elastic element; 41: First elastic arm; 42: Mounting portion; 43: Second elastic arm; 401: Limiting structure; 4011: Limiting piece; 4012: Limiting hole; 50: Limiting element; 60: Static contact; 601: Static contact point; 100: Housing; X: First direction; Y: Second direction; Z: Third direction. Detailed Implementation

[0036] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0037] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0038] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] This application provides a relay, such as Figure 1 As shown, the relay includes: a push assembly 10; a moving contact assembly 30, the moving contact assembly 30 including a moving contact 31 and a compression spring 32, the compression spring 32 abutting between the push assembly 10 and the moving contact 31 for providing contact pressure to the moving contact 31 during the overtravel phase; and a first elastic member 20 that acts on the compression spring 32 and applies auxiliary pressure to the compression spring 32 at least partially during the non-contact phase and the overtravel phase, the auxiliary pressure having at least a partial component in the same direction as the contact pressure applied by the compression spring 32.

[0041] In this embodiment, since the compression spring 32 abuts against the push assembly 10 and the moving contact 31, during the overtravel phase, the compression spring 32 provides contact pressure to the moving contact 31, ensuring that the moving contact 31 is in close contact with the stationary contact 60 of the relay. Additionally, the first elastic member 20 acts on the compression spring 32, thereby applying auxiliary pressure to the compression spring 32. The compression spring 32 transmits the auxiliary pressure of the first elastic member 20 to the moving contact 31, making it less prone to bouncing when the moving contact 31 contacts the stationary contact 601, thus preventing repeated arcing of the moving contact 31 and improving the lifespan of the moving contact 312. That is, in this embodiment, the first elastic element 20 elastically acts on the compression spring 32 and provides auxiliary pressure in both the non-contact stage and the overtravel stage. The compression spring 32 elastically acts on the moving contact 31, and the moving contact 31 is subjected to double elastic pressure, so that the moving contact 31 obtains effective and reliable contact pressure in the initial stage of contact with the stationary contact 60, with high pressurization efficiency. This can resist the influence of the contact electric repulsion force at the initial contact between the moving contact 31 and the stationary contact 60, and avoid the moving contact 31 from rebounding due to high kinetic energy. This avoids the problem of the moving contact 31 easily bouncing, which affects the contact life, and ensures the provision of reliable fault current resistance. In addition, during the entire overtravel process, the pressure system composed of the first elastic element 20 and the compression spring 32 always maintains a high neck. Under the same contact pressure, the required overall deformation is smaller. Therefore, the operating voltage required by the drive part of the relay to drive the push assembly 10 can be smaller, saving energy and volume. Correspondingly, it is beneficial to reduce the movement stroke of the drive part and improve magnetic efficiency.

[0042] It should be noted that, as Figure 4 and Figure 5 As shown, the driving part of the relay includes a coil, an armature assembly, and a stationary iron core. The armature assembly is connected to the push assembly 10 through a connection structure. When the coil is supplied with forward or reverse current, the armature assembly moves relative to the stationary iron core. The armature assembly drives the push assembly 10 through the connection structure, causing the push assembly 10 to drive the moving contact 31 to move in a direction closer to the stationary contact 60, or the push assembly 10 to drive the moving contact 31 to move in a direction away from the stationary contact 60.

[0043] In some embodiments, such as Figure 3As shown, the first elastic element 20 acts on the compression spring 32 between the points where the compression spring 32 abuts against the pushing assembly 10 and the moving contact 31, respectively. With this arrangement, during the initial contact and the overtravel phase after contact, the fulcrum pressing on the compression spring 32 is located near the center of the spring 32. This reduces leverage, shortens the force transmission path, reduces energy loss, and makes the deformation of the compression spring 32 more uniform. This improves the pressing efficiency of the compression spring 32 and the contact pressure it can provide, while also reducing the risk of localized stress concentration.

[0044] Specifically, the auxiliary pressure exerted by the first elastic element 20 on the compression spring 32 can be transmitted to the compression spring 32 first. Then, the compression spring 32 undergoes a certain deformation, and the compression spring 32 elastically transmits the force of the first elastic element 20 to the position that abuts against the moving contact 31, so that the moving contact 31 is subjected to the force of the compression spring 32 and the force of the first elastic element 20.

[0045] In some embodiments, the first elastic element 20 is mounted on the pushing assembly 10, and the auxiliary pressure applied by the first elastic element 20 remains unchanged during the non-contact phase.

[0046] With this configuration, compared to other components where the first elastic element 20 is mounted outside the push assembly 10, the auxiliary pressure applied by the first elastic element 20 remains unchanged during the non-contact phase. This makes the auxiliary pressure applied by the first elastic element 20 more reliable, allowing it to function better from the initial contact stage. It also avoids the need to increase the release voltage required for release or the drive voltage required for closing due to external forces on the push assembly 10 as a whole. Furthermore, mounting the first elastic element 20 on the push assembly 10 improves the compactness of the relay structure, reducing the space occupied by the first elastic element 20 and thus contributing to a smaller relay size.

[0047] In some embodiments, as the overtravel gradually increases, the auxiliary pressure applied by the first elastic element 20 gradually increases. With this configuration, the presence of the first elastic element 20 effectively ensures a tight contact between the moving contact 31 and the stationary contact 60 during the gradual increase of the overtravel, effectively preventing weak contact between the moving contact 31 and the stationary contact 60, which could affect the relay's performance. Furthermore, providing a relatively small auxiliary pressure at the initial stage of contact reduces the probability of the moving contact 31 bouncing due to high kinetic energy and initial electric repulsion. Compared to providing a larger auxiliary pressure at the initial stage of contact, this reduces the driving force required by the drive unit during the overtravel phase, ensuring reliable contact of the moving contact 31 and saving energy. Providing a relatively large auxiliary pressure at the end of the overtravel ensures reliable contact and reliable short-circuit withstand capability.

[0048] In some embodiments, as the overtravel gradually increases, the position of the first elastic element 20 acting on the compression spring 32 gradually approaches the position where the compression spring 32 abuts against the moving contact 31.

[0049] With this configuration, as the overtravel gradually increases, the transmission point of the auxiliary pressure provided by the first elastic element 20 is closer to the contact point between the compression spring 32 and the moving contact 31. This facilitates the rapid transmission of the auxiliary pressure provided by the first elastic element 20 to the compression spring 32, allowing the compression spring 32 to quickly provide contact pressure to the moving contact 31, which is beneficial for a tight contact between the moving contact 31 and the stationary contact 60. Furthermore, as the position of the first elastic element 20 acting on the compression spring 32 gradually approaches the contact point between the compression spring 32 and the moving contact 31 during the overtravel process, the stiffness coefficient of the pressure system composed of the first elastic element 20 and the compression spring 32 gradually increases. This ensures reliable contact pressure after the overtravel ends. Moreover, compared to providing a higher stiffness coefficient at the beginning of the overtravel, it also avoids failure of the suction force matching and excessive energy consumption.

[0050] In some embodiments, such as Figure 2 As shown, the first elastic member 20 has a first abutment point 2001, a second abutment point 2002 and an abutment end 2003 arranged sequentially in its extension direction; the first abutment point 2001 abuts against the pushing component 10 and is fixed relative to the pushing component 10; the abutment end 2003 abuts against the compression spring 32; during the overtravel process, the first elastic member 20 is adapted to deform with the second abutment point 2002 as the fulcrum, and during deformation, the first elastic member 20 is compressed and further stores energy, and the abutment end 2003 is displaced to the side away from the first abutment point 2001.

[0051] Since the first abutment point 2001 abuts against and is fixed relative to the pushing component 10, it is equivalent to the first elastic member 20 being connected to the pushing component 10 at the position of the first abutment point 2001. During the movement of the pushing component 10, the first abutment point 2001 will move along with the pushing component 10. The abutment end 2003 abuts against the compression spring 32, so that during the deformation of the first elastic member 20, the abutment end 2003 transmits the force to the compression spring 32. Furthermore, during the overtravel process, the first elastic element 20 deforms around the second contact point 2002 as a fulcrum, thereby being compressed by the pushing component 10 and further deforming to store energy. During the deformation of the first elastic element 20, the contact end 2003 displaces towards the side away from the first contact point 2001. This simple structure achieves the function that, as the overtravel gradually increases, the auxiliary pressure applied by the first elastic element 20 gradually increases, and the position of the first elastic element 20 acting on the compression spring 32 gradually approaches the position where the compression spring 32 abuts against the moving contact 31. The contact end 2003 transmits the force of the first elastic element 20 to the compression spring 32, so that the compression spring 32 is simultaneously subjected to the forces of the pushing component 10 and the first elastic element 20, and transmits the force to the moving contact 31. In addition, during the overtravel process, the first elastic element 20 is adapted to deform with the second contact point 2002 as the fulcrum, which can ensure that during the overtravel process, the first elastic element 20 applies auxiliary pressure to the compression spring 32, which is conducive to the close contact between the moving contact 31 and the stationary contact 60.

[0052] It should be noted that the second contact point 2002 can contact the pushing component 10. In this case, during the movement of the pushing component 10, the first elastic element 20 can directly deform with the second contact point 2002 as the fulcrum. Of course, the second contact point can also not contact the pushing component 10 in the non-contact stage, but in the overtravel stage, the pushing component 10 contacts the second contact point 2002, so that during the overtravel process, the first elastic element 20 can deform with the second contact point 2002 as the fulcrum.

[0053] In some embodiments, such as Figure 1 and Figure 6 As shown, the movable contact assembly 30 includes at least two movable contacts 31 suitable for parallel connection, or the movable contact 31 is provided with at least two movable contact branches suitable for parallel connection (not shown in the figure); at least one of the movable contacts 31 is correspondingly provided with a first elastic member 20, or at least one of the movable contact branches is correspondingly provided with a first elastic member 20.

[0054] When the moving contact assembly 30 includes at least two moving contacts 31 suitable for parallel connection, the at least two moving contacts 31 connected in parallel can achieve current diversion, improve current carrying capacity, and reduce the contact electric repulsion force of the moving contact 312 of the moving contact 31, ensuring reliable contact between the moving contact 312 of the moving contact 31 and the stationary contact 60.

[0055] When the moving contact 31 is provided with at least two moving contact branches suitable for parallel connection, the at least two parallel moving contact branches can achieve current diversion, improve current carrying capacity, and reduce the contact electric repulsion force of the moving contact 312 of the moving contact branch, ensuring reliable contact between the moving contact 312 of the moving contact branch and the stationary contact 60.

[0056] In addition, at least one of the moving contacts 31 is provided with a first elastic element 20, or at least one of the moving contact branches is provided with a first elastic element 20. This can effectively ensure that each moving contact 31 or each moving contact branch is subjected to the auxiliary pressure provided by the first elastic element 20 and ensure that each moving contact 31 or each moving contact branch can quickly obtain contact pressure. This is beneficial for each moving contact 31 or each moving contact branch to make close contact with the stationary contact 60.

[0057] In some embodiments, the compression spring 32 acts on the moving contact 31 at the location of the moving contact 312. With this arrangement, once the compression spring 32 is subjected to the force of the pushing assembly 10 and the first elastic member 20, the compression spring 32 can directly transmit the force to the moving contact 312. Compared to other positions where the compression spring 32 acts on the moving contact 31, the compression spring 32 can quickly and directly provide force to the moving contact 312, which is beneficial for the moving contact 312 to make close contact with the stationary contact 60.

[0058] In some embodiments, such as Figure 4 and Figure 5 As shown, the movable contact 31 includes a movable contact plate 311 and movable contacts 312. The movable contact plate 311 has a first surface 3111 and a second surface 3112 on both sides along its thickness direction. Movable contacts 312 are respectively provided at both ends of the second surface 3112 along the first direction X. The first elastic member 20 has opposing first ends 201 and second ends 202 along the first direction X. Both the first ends 201 and the second ends 202 abut against the compression spring 32. The compression spring 32 has opposing first connecting ends 321 and second connecting ends 322 along the first direction X. Both the connecting end 321 and the second connecting end 322, on the side opposite to the first elastic member 20, are connected to the second surface 3112; the position where the pushing assembly 10 abuts against the compression spring 32 is located between the first connecting end 321 and the second connecting end 322; in the first direction X, the position where the first end 201 abuts against the compression spring 32 is located between the position where the pushing assembly 10 abuts against the compression spring 32 and the first connecting end 321, and the position where the second end 202 abuts against the compression spring 32 is located between the position where the pushing assembly 10 abuts against the compression spring 32 and the second connecting end 322.

[0059] With this arrangement, the positions where the two opposite ends of the first elastic element 20 abut against the compression spring 32 along the first direction X are located between the position where the push assembly 10 abuts against the compression spring 32 and the two opposite connecting ends of the compression spring 32 along the first direction X. Thus, when the first elastic element 20 deforms, the two opposite ends of the first elastic element 20 apply force to the compression spring 32, so that the compression spring 32 transmits the pressure to the first connecting end 321 and the second connecting end 322 respectively. Thus, it is equivalent to the moving contact 31 being subjected to the force of the compression spring 32 on both sides along the first direction X. The moving contact 31 is provided with moving contact points 312 on both sides along the first direction X, which is beneficial for the moving contact points 312 on the moving contact 31 to be subjected to the force of the first elastic element 20. During the overtravel stage, it is beneficial for the moving contact points 312 to be in close contact with the stationary contact 60. Furthermore, the second surface 3112 has movable contacts 312 at both ends along the first direction X, which is equivalent to the movable contact 31 having at least two contacts. The contact gap of the two contacts is twice that of the single contact. While increasing the contact gap, the movement distance of the movable contact 31 can be reduced, thereby reducing the space and realizing the reduction of the relay size. In addition, the compression spring 32 has a first connecting end 321 and a second connecting end 322 along the first direction X. The sides of the first connecting end 321 and the second connecting end 322 that are away from the first elastic member 20 are both connected to the second surface 3112. This is equivalent to both ends of the compression spring 32 acting on the movable contact 31. This is beneficial for both movable contacts 312 on both sides of the second surface of the movable contact 31 to be subjected to the force of the compression spring 32. During the overtravel stage, it is beneficial for the movable contacts 312 to make close contact with the stationary contact 60. In addition, the first elastic member 20 has a first end 201 and a second end 202 along the first direction X; both the first end 201 and the second end 202 abut against the compression spring 32, which means that both ends of the first elastic member 20 act on the compression spring 32. Thus, at the moment of contact and in the overtravel stage after contact, the fulcrum pressed on the compression spring 32 is located near the middle of the compression spring 32, which reduces the leverage effect, shortens the force transmission path, reduces energy loss, and makes the compression spring 32 deform more evenly under force. This can improve the pressing efficiency of the compression spring 32 and increase the contact pressure that the compression spring 32 can provide, and reduce the risk of local stress concentration.

[0060] It should be noted that movable contacts 312 are respectively provided at both ends of the second surface 3112 along the first direction X. The number of movable contacts 312 provided at each end of the second surface 3112 along the first direction X can be determined according to actual needs. For example, if one movable contact 312 is provided at each end, it is equivalent to the second surface 3112 having two movable contacts 312. Or, for example, if two movable contacts 312 are provided at each end, it is equivalent to the second surface 3112 having four movable contacts 312. In this respect, the embodiments of this application do not limit it.

[0061] In some embodiments, such as Figure 2 As shown, in the second direction Y, the position where the first end 201 abuts against the compression spring 32 is opposite to the moving contact 312 at one end of the moving contact plate 311, and the position where the second end 202 abuts against the compression spring 32 is opposite to the moving contact 312 at the other end of the moving contact plate 311. The second direction Y is the direction of movement of the moving contact 31.

[0062] With this configuration, when the first elastic element 20 deforms, the force of the first elastic element 20 is transmitted to the moving contact 312 through the compression spring 32 via a shorter path. That is, the auxiliary pressure provided by the first elastic element 20 can be transmitted to the moving contact 312 more quickly, thereby improving the pressurization efficiency of the moving contact 312. Furthermore, the auxiliary pressure provided by the first elastic element 20 acts directly on the moving contact 312 along the second direction Y, improving the tightness of the contact between the moving contact 312 and the stationary contact 60.

[0063] In some embodiments, such as Figure 4 As shown, the compression spring 32 also includes a first bent portion 3201, a middle portion 3202, and a second bent portion 3203 connected sequentially along a first direction X. The middle portion 3202 is connected to the push assembly 10. The first bent portion 3201 is connected to the first connecting end 321 so that the middle portion 3202 and the first connecting end 321 are offset along a second direction Y. The second bent portion 3203 is connected to the second connecting end 322 so that the middle portion 3202 and the second connecting end 322 are offset along a second direction Y. The first end 201 and the second end 202 both abut against the middle portion 3202, or the first end 201 abuts against the position where the middle portion 3202 and the first bent portion 3201 are connected, and the second end 202 abuts against the position where the middle portion 3202 and the second bent portion 3203 are connected.

[0064] With this arrangement, it is equivalent to the first connecting end 321 and the middle part 3202 not being on the same plane, and the first connecting end 321 and the middle part 3202 being spaced apart in the second direction Y. The second connecting end 322 and the middle part 3202 are not on the same plane, and the second connecting end 322 and the middle part 3202 are spaced apart in the second direction Y. Thus, when the end of the first elastic member 20 abuts against the compression spring 32, the first elastic member 20 is prevented from directly abutting against the first connecting end 321 and the second connecting end 322, which would have caused the problem of the first elastic member 20 being difficult to set. Furthermore, the presence of the first bending portion 3201 and the second bending portion 3203 facilitates the transmission of force to the first connecting end 321 and the second connecting end 322 when the first elastic member 20 transmits the force to the middle portion 3202, or when the first elastic member 20 transmits the force to the position where the middle portion 3202 is connected to the first bending portion 3201, or the position where the middle portion 3202 is connected to the second bending portion 3203. This facilitates the transmission of the force of the first elastic member 20 to the moving contact 31, which is beneficial for relay closure.

[0065] In some embodiments, such as Figure 2 As shown, the first elastic member 20 includes a third bent portion 21, a connecting portion 22, and a fourth bent portion 23 connected in sequence; the connecting portion 22 abuts against and is relatively fixed to the pushing assembly 10, the end of the third bent portion 21 away from the connecting portion 22 abuts against the compression spring 32, and the end of the fourth bent portion 23 away from the connecting portion 22 abuts against the compression spring 32, and both the third bent portion 21 and the fourth bent portion 23 abut against the pushing assembly 10; when the moving contact 31 travels beyond its travel range, the positions where the third bent portion 21 abuts against the pushing assembly 10 and the positions where the fourth bent portion 23 abuts against the pushing assembly 10 are both compressed, so that... Both the third bend 21 and the fourth bend 23 deform and store energy, and the contact pressure provided by the third bend 21 and the fourth bend 23 to the compression spring 32 increases. It can be understood that in this embodiment, the connecting part 22 constitutes the first abutment point 2001 in the aforementioned embodiment; both the third bend 21 and the fourth bend 23 have protrusions that abut against the pushing assembly 10, and these protrusions constitute the second abutment point 2002 in the aforementioned embodiment; the end of the third bend 21 away from the connecting part 22 and the end of the fourth bend 23 away from the connecting part 22 both constitute the abutment end 2003 in the aforementioned embodiment.

[0066] Since the connecting part 22 abuts against and is relatively fixed to the pushing assembly 10, the pushing assembly 10 is essentially connected to the first elastic member 20 through the connecting part 22. Therefore, during the movement of the pushing assembly 10, the pushing assembly 10 can apply force to the connecting part 22 or drive the connecting part 22 to move, causing both the third bent part 21 and the fourth bent part 23 to move. Furthermore, the end of the third bent part 21 away from the connecting part 22 abuts against the compression spring 32, and the end of the fourth bent part 23 away from the connecting part 22 abuts against the compression spring 32. Both the third bent part 21 and the fourth bent part 23 abut against the pushing assembly 10. Thus, during the movement of the pushing assembly 10, the pushing assembly 10 can apply force to the third bent part 21 and the fourth bent part 23, causing them to deform. The force generated by the deformation of the third bent part 21 can be transmitted to the compression spring 32, and the force generated by the deformation of the fourth bent part 23 can also be transmitted to the compression spring 32. Specifically, when the moving contact 31 travels beyond its travel range, the positions where the third bend 21 abuts against the push assembly 10 and the fourth bend 23 abut against the push assembly 10 are both compressed, causing both the third bend 21 and the fourth bend 23 to deform. The third bend 21 and the fourth bend 23 provide increased contact pressure to the compression spring 32, thereby increasing the contact pressure on the moving contact 31 during the overtravel phase. This is beneficial for the moving contact 312 of the moving contact 31 to make close contact with the stationary contact 60 and ensures stable contact between the moving contact 312 and the stationary contact 60.

[0067] In addition, in this embodiment, when the relay needs to be disconnected, the pushing component 10 moves in the opposite direction. The portion of the third bend 21 between the position where it abuts the pushing component 10 and the end of the third bend 21 away from the connecting portion 22 deforms and releases energy, and applies a thrust to the pushing component 10. This helps the pushing component 10 move in the disconnection direction and reduces the driving force required by the driving part, which is beneficial for saving energy and achieving a small size. The portion of the fourth bend 23 between the position where it abuts the pushing component 10 and the end of the fourth bend 23 away from the connecting portion 22 deforms and releases energy, and applies a thrust to the pushing component 10. This also helps the pushing component 10 move in the disconnection direction and reduces the driving force required by the driving part, which is beneficial for saving energy and achieving a small size.

[0068] In some embodiments, such as Figure 2As shown, both the third bending portion 21 and the fourth bending portion 23 include a first bending arm 211 and a second bending arm 212. One end of the first bending arm 211 is connected to the connecting portion 22, and the other end of the first bending arm 211 is connected to one end of the second bending arm 212. The other end of the second bending arm 212 abuts against the compression spring 32. The first bending arm 211 and the second bending arm 212 form an angle with the opening facing the compression spring 32, and part of the second bending arm 212 abuts against the pushing component 10, and the abutting position constitutes the second abutting point 2002 in the aforementioned embodiment. Alternatively, the connection position where the first bending arm 211 and the second bending arm 212 are connected abuts against the pushing component 10, and the abutting position constitutes the second abutting point 2002 in the aforementioned embodiment.

[0069] With this configuration, when the moving contact 31 travels beyond its travel range, the second bending arm 212 will be compressed by the pushing component 10, causing it to deform. The force generated by this deformation will then be transmitted to the compression spring 32, which will then be subjected to the force of the first elastic element 20. In other words, by configuring the first bending arm 211 and the second bending arm 212, it is beneficial to achieve the deformation of the third bending portion 21 and the fourth bending portion 23, and to transmit the force generated by this deformation to the compression spring 32.

[0070] Of course, in the embodiments of this application, the number of bent arms included in the third bending portion 21 and the fourth bending portion 23 can also be other numbers. For example, both the third bending portion 21 and the fourth bending portion 23 include four bent arms connected in sequence, and the four bent arms are distributed in a wavy line shape; or, for another example, both the third bending portion 21 and the fourth bending portion 23 include six bent arms connected in sequence, and the six bent arms are distributed in a wavy line shape. The embodiments of this application do not limit this to any particular type.

[0071] In some embodiments, the other end of the second bent arm 212 is connected to an abutment structure 213, which has an arc-shaped abutment surface that abuts against the compression spring 32.

[0072] With this configuration, the other end of the second bent arm 212 can apply force to the compression spring 32 through the abutment structure 213, facilitating the transmission of the force from the first elastic element 20 to the compression spring 32. Furthermore, the abutment structure 213 has an arc-shaped abutment surface that abuts against the compression spring 32, effectively preventing scratching between the abutment structure and the compression spring 32, thus avoiding problems such as shavings, noise, and high frictional resistance. It also prevents shavings from potentially affecting the contact between the moving contact 312 and the stationary contact 60.

[0073] In some embodiments, such as Figure 2As shown, the abutment structure 213 includes at least one folded wall 2131, which is located between the second bent arm 212 and the compression spring 32. When there is only one folded wall 2131, the folded wall 2131 is stacked on top of the other end of the second bent arm 212 and connected to the second bent arm 212 by an arc connecting segment, and the folded wall 2131 abuts against the compression spring 32. When there are multiple folded walls 2131, the multiple folded walls 2131 are stacked on top of each other and connected to each other, and each of the multiple folded walls 2131 is connected to the arc connecting segment. And / or, two of the multiple folded walls 2131 that are away from the second bent arm 212 are connected by an arc connecting segment, and another folded wall 2131 abuts against the compression spring 32. The folded wall 2131 that abuts against the compression spring 32 has an abutment surface.

[0074] When there is only one folding wall 2131, it is stacked on top of the other end of the second bent arm 212 and connected to the second bent arm 212 by an arc connecting section. The folding wall 2131 abuts against the compression spring 32, so that the second bent arm 212 transmits the force to the compression spring 32 through the folding wall 2131. That is, when the second bent arm 212 deforms and generates force, the force can be transmitted to the folding wall 2131 and then to the compression spring 32. The presence of the folding wall 2131 and the position where it abuts against the compression spring 32 are equivalent to forming a force-bearing point, avoiding the second bent arm 212 directly abutting against the compression spring 32, which may cause the second bent arm 212 to scrape against the compression spring 32 and generate debris. When there is only one folding wall 2131, the side of the folding wall 2131 that abuts against the compression spring 32 can have an arc-shaped abutment surface.

[0075] When there are multiple folding walls 2131, they are stacked and interconnected. Each folding wall 2131 is connected by an arc-shaped connecting segment, and one folding wall 2131 is also connected to the second bent arm 212 by an arc-shaped connecting segment. This ensures a smooth connection between the folding walls 2131 and the second bent arm 212, facilitating force transmission. Another folding wall 2131 abuts against the compression spring 32. Therefore, when the second bent arm 212 deforms, the force generated by its deformation can be transmitted to the compression spring 32 through the multiple folding walls 2131. Furthermore, the stacking of the multiple folding walls 2131 causes them to deform to some extent, providing additional force to the compression spring 32 and increasing its stress. Among the multiple folded walls 2131, the folded wall 2131 that abuts against the compression spring 32 has an arc-shaped abutment surface.

[0076] In addition, when there are multiple folded walls 2131, the multiple folded walls 2131 are stacked and connected to each other. This allows two folded walls 2131 that are far away from the second bending arm 212 to be connected by an arc connecting segment, which can ensure that the connection between these two folded walls 2131 is relatively smooth and facilitates the transmission of force.

[0077] In the above embodiments, the folding wall 2131 that abuts against the compression spring 32 is provided with an arc-shaped abutment surface. The abutment surface can be the outer surface of the arc-shaped connecting section or an arc-shaped surface provided on the side of the folding wall 2131 facing the compression spring 32.

[0078] It should be noted that when there are multiple folding walls 2131, the specific number of folding walls 2131 can be set according to actual needs. For example, the number of folding walls 2131 may be 3, or even 5. The specific number of folding walls 2131 is not limited in this embodiment.

[0079] In some embodiments, such as Figure 4 and Figure 5 As shown, the relay also includes a second elastic element 40 and a housing 100; the displacement of both ends of the second elastic element 40 along the first direction X in the second direction Y is limited by the housing 100, the middle part of the second elastic element 40 is connected to the push assembly 10 and connected to the moving contact assembly 30 and / or the push assembly 10, the second elastic element 40 is supported on the housing 100 of the relay along the third direction Z, and cooperates with the housing 100 to limit the displacement of the moving contact assembly 30 along the first direction X.

[0080] With this configuration, the two ends of the second elastic element 40 in the first direction X are effectively limited in the second direction Y, and the second elastic element 40 can also be limited in the third direction Z. This ensures that the second elastic element 40 is suspended in the housing 100 and its position is relatively stable. That is, the pushing component 10 and the moving contact 1 are suspended in the housing 100 using the second elastic element 40 and do not come into contact with the housing 100. Since the displacement of the two ends of the second elastic element 40 in the second direction Y is also limited, the frictional resistance generated between the second elastic element 40 and the housing 100 in the second direction Y is small. Furthermore, since the second elastic element 40 cooperates with the housing 100 to limit the displacement of the moving contact 31 along the first direction X, the frictional resistance of the moving contact 31 can be effectively reduced. When the moving contact 312 of component 31 contacts the stationary contact 60, the offset of the moving contact 312 relative to the stationary contact 60 along the first direction X reduces the problem of the relay's contact performance being affected. In summary, in this embodiment, the second elastic member 40 can reliably guide the linear movement of the pushing component 10 and the moving contact 1, but at the same time, it will not cause the pushing component 10 and the moving contact 1 to generate large frictional resistance with the housing 100, reducing the driving force required by the driving part, reducing energy consumption, and providing a material basis for reducing the overall volume of the driving part and the relay. Furthermore, by providing the second elastic member 40, the stability of the contact between the moving contact 312 of the moving contact 31 and the stationary contact 60 can be effectively improved, thereby improving the performance of the relay.

[0081] In this embodiment, the first direction X, the second direction Y, and the third direction Z are mutually perpendicular. It should be noted that the mutual perpendicularity of the first direction X, the second direction Y, and the third direction Z can be strictly "perpendicular," for example, the angle between the first direction X and the second direction Y is 90°; or it can be "approximately perpendicular," specifically meaning that the angle between any two of the first direction X, the second direction Y, and the third direction Z includes a certain error. Considering the measurement and the error associated with the measurement of a specific quantity (i.e., the limitation of the measurement system), this error is within the acceptable deviation range for a specific value as determined by a person skilled in the art; for example, the angle between the first direction X and the second direction Y is 90°±5°.

[0082] In some embodiments, such as Figure 4 and Figure 5 As shown, the relay also includes stationary contacts 60 that cooperate with the moving contacts 312 at both ends of the moving contact plate 311; the relay has a closed state and an open state; when the relay is in the closed state or the open state, the second elastic member 40 applies force to the pushing assembly 10 and the moving contact assembly 30 in the direction of the stationary contact 601.

[0083] With this configuration, the second elastic element 40 is equivalent to always applying a force towards the stationary contact 601 to the pushing component 10 and the moving contact component 30. Thus, when the relay needs to be closed, the force of the second elastic element 40 can help the moving contact 312 move closer to the stationary contact 601, thereby reducing the voltage of the relay's driving part and reducing the relay's energy consumption. When the relay is open, the force of the second elastic element 40 can make the pushing component 10 and the moving contact component 30 move relatively stably, avoiding the risk of repeated arcing, arc splashing, explosion, etc. that may be caused by the rapid rebound of the moving contact component 30.

[0084] It should be noted that when the relay is disconnected, the pushing component 10 and the moving contact component 30 move away from the stationary contact 601, and the second elastic member 40 applies a force toward the stationary contact 601 to the pushing component 10 and the moving contact component 30, which can slow down the movement of the pushing component 10 and the moving contact component 30. That is, the direction of the force applied by the second elastic member 40 to the pushing component 10 and the moving contact component 30 is opposite to the direction of movement of the pushing component 10, which can make the pushing component 10 move more stably.

[0085] In some embodiments, when the relay is in the open state, the magnitude of the force applied by the second elastic member 40 to the pushing component 10 and the moving contact component 30 is a first value, and when the relay is in the closed state, the magnitude of the force applied by the second elastic member 40 to the pushing component 10 and the moving contact component 30 is a second value, wherein the first value is greater than the second value.

[0086] With this configuration, when the relay is in the open state, the force applied by the second elastic element 40 is greater than the force applied by the second elastic element 40 when the relay is in the closed state. This, combined with a larger contact gap between the moving contact 312 and the stationary contact 601, facilitates contact between the moving contact 312 and the stationary contact 601, thus promoting relay closure, improving closure efficiency, reducing contact voltage and energy consumption, and also helping to reduce the bounce of the moving contact 31. This increases the contact pressure between the moving contact 312 and the stationary contact 601, increasing the relay's closing pressure and thus improving the relay's short-circuit withstand performance. Furthermore, when the relay is open, the second elastic element 40 applies resistance to the pushing component 10, enabling the relay to open stably. This allows for better control of the larger gap between the moving contact 312 and the stationary contact 601, ensuring stable arc burning during disconnection and preventing the arc from deviating from the contact. This allows the pushing component 10 and the moving contact component 30 to stop more stably, avoiding rebound.

[0087] In some embodiments, such as Figure 2 , Figure 4 and Figure 5As shown, the second elastic member 40 includes a first elastic arm 41, a mounting portion 42, and a second elastic arm 43 connected sequentially along the first direction X; the mounting portion 42 is connected to the push assembly 10, and the ends of the first elastic arm 41 and the second elastic arm 43 away from the mounting portion 42 are respectively limited and engaged with the housing 100 along the second direction Y; when the relay is in the closed state, there is a first angle between the first elastic arm 41 and the mounting portion 42, and there is a first angle between the second elastic arm 43 and the mounting portion 42; when the relay is in the open state, there is a second angle between the first elastic arm 41 and the mounting portion 42, and there is a second angle between the second elastic arm 43 and the mounting portion 42, and the first angle is smaller than the second angle.

[0088] With this configuration, the deformation of the second elastic element 40 is relatively small when the relay is closed, and larger when the relay is open. Therefore, the second elastic element 40 exerts a larger force on the compression spring 32 when the relay is open, and a smaller force when the relay is closed. In other words, by providing the first elastic arm 41, the mounting part 42, and the second elastic arm 43, the second elastic element 40 can easily apply different magnitudes of force to the compression spring 32 when the relay is in different states.

[0089] It should be noted that, in the embodiments of this application, when the relay is in the closed state, the second elastic element 40 can be in a deformed state, or it can be in the initial state. This embodiment of the application does not limit the scope of the application in this regard.

[0090] In some embodiments, such as Figure 1 As shown, the second elastic member 40 is provided with a limiting structure 401 at both ends opposite to each other along the first direction X. The limiting structure 401 is used to cooperate with the housing 100 to limit the displacement of the second elastic member 40 in the first direction X and to limit the displacement of the two ends of the second elastic member 40 along the first direction X along the second direction Y.

[0091] Since the second elastic member 40 has limiting structures 401 at both ends opposite to each other along the first direction X, when the second elastic member 40 is installed, the limiting structures 401 can cooperate with the housing 100, so the second elastic member 40 can be limited in the first direction X and also limited along the second direction Y. This achieves the function of limiting cooperation in two directions with a single structure, making the structural design simpler and easier to implement. Furthermore, the second elastic member 40 is connected to the pushing assembly 10. With the second elastic member 40 limited in the first direction X, the pushing assembly 10 is also limited in the first direction X. Therefore, the pushing assembly 10 can use the compression spring 32 to limit the moving contact 31 in the first direction X. This also limits the displacement of the moving contact 31 in the first direction X, preventing the moving contact point 312 of the moving contact 31 from misaligning with the stationary contact 60 along the first direction X.

[0092] In some embodiments, such as Figure 2 , Figure 4 and Figure 5 As shown, the housing 100 is provided with a limiting member 50; the limiting structure 401 includes a limiting piece 4011, the limiting piece 4011 is provided with a limiting hole 4012, and the limiting member 50 passes through the limiting hole 4012 along the third direction Z.

[0093] With this configuration, when installing the second elastic member 40, the limiting piece 4011 can be directly fitted onto the limiting member 50 through the limiting hole 4012. This is equivalent to the limiting member 50 passing through the limiting hole 4012 along the third direction Z, making it easier to install the second elastic member 40. Furthermore, since the limiting member 50 passes through the limiting hole 4012, when the limiting piece 4011 may move due to the deformation of the second elastic member 40, the limiting member 50 may contact the wall of the limiting hole 4012. In other words, the limiting member 50 limits the limiting piece 4011 through the limiting hole 4012, thereby limiting the displacement of the second elastic member 40 at both ends along the first direction X and the displacement along the second direction Y. By setting a limiting piece 4011, and the limiting piece 4011 is provided with a limiting hole 4012, it is not only convenient to install the second elastic member 40, but also convenient to limit the second elastic member 40 in the first direction X. In addition, by providing a flange structure on the outer wall of the limiting member 50 and / or providing an abutment surface on the housing 100, it is also convenient to limit the two ends of the second elastic member 40 in the third direction Z.

[0094] It should be noted that the number of limiting pieces 4011 included in the limiting structure 401 can be set according to actual needs. For example, if there are two limiting pieces 4011, they are distributed at intervals along the third direction Z, and each limiting piece 4011 is provided with a limiting hole 4012. Alternatively, if there are three limiting pieces 4011, they are distributed at intervals along the third direction Z. The specific number of limiting pieces 4011 included in the limiting structure 401 is not limited in this embodiment.

[0095] Of course, in this embodiment, the limiting structure 401 can also be of other types. For example, the limiting structure 401 includes a limiting rod. In this case, the housing 100 is provided with a limiting component that is adapted to the limiting rod. The limiting component cooperates with the limiting rod to limit the limiting rod, thereby limiting the second elastic member 40.

[0096] In some embodiments, the size of the limiting hole 4012 along the first direction X is greater than the size of the portion of the limiting member 50 located within the limiting hole 4012 along the first direction X, so that the two ends of the second elastic member 40 can extend and retract during the movement of the moving contact assembly 30; and / or, the size of the limiting hole 4012 along the second direction Y matches the size of the portion of the limiting member 50 located within the limiting hole 4012 along the second direction Y.

[0097] When the movable contact 31 needs to move, once the middle part of the second elastic member 40 deforms, the two ends of the second elastic member 40 need to be displaced to a certain extent. That is, the two ends of the second elastic member 40 need to be able to extend and retract to ensure that the middle part of the second elastic member 40 deforms. Therefore, by setting the dimension of the limiting hole 4012 along the first direction X to be larger than the dimension of the part of the limiting member 50 located in the limiting hole 4012 along the first direction X, it can be effectively ensured that when the middle part of the second elastic member 40 deforms, the two ends of the second elastic member 40 can be displaced or extended and retracted relative to the limiting hole 4012 to ensure that the second elastic member 40 deforms stably.

[0098] Furthermore, when the dimension of the limiting hole 4012 along the second direction Y matches the dimension of the portion of the limiting member 50 located within the limiting hole 4012 along the second direction Y, it can ensure that the limiting member 50 and the limiting hole 4012 are well matched along the second direction Y. This facilitates the limiting of the limiting piece 4011 along the second direction Y, resulting in a small displacement of both ends of the second elastic member 40 along the second direction Y. This reduces the frictional resistance when the pushing assembly 10 and the moving contact assembly 30 move, allowing the pushing assembly 10 and the moving contact assembly 30 to operate smoothly and reducing the driving force required by the driving part.

[0099] In some embodiments, the second elastic member 40 and the first elastic member 20 are integrally formed. This arrangement not only increases the strength of the structure formed by the first elastic member 20 and the second elastic member 40, but also facilitates the molding of the first elastic member 20 and the second elastic member 40, thereby reducing the cost of the relay.

[0100] In some embodiments, such as Figure 1 and Figure 7 As shown, the first elastic member 20 is provided with a first fixing hole 200, the compression spring 32 is provided with a second fixing hole 320, and the pushing assembly 10 is provided with a fixing boss 101. The fixing boss 101 passes through the first fixing hole 200 and the second fixing hole 320 along the second direction Y to limit the displacement of the first elastic member 20 and the compression spring 32 relative to the pushing assembly 10 along the first direction X and the third direction Z. Along the second direction Y, the first elastic member 20 presses against the compression spring 32 and the pushing assembly 10.

[0101] Since the first elastic element 20 is provided with a first fixing hole 200, the compression spring 32 is provided with a second fixing hole 320, and the pushing assembly 10 is provided with a fixing boss 101, when it is necessary to assemble the pushing assembly 10, the first elastic element 20, and the compression spring 32, the fixing boss 101 can be directly inserted through the first fixing hole 200 and the second fixing hole 320 along the second direction Y, so that the pushing assembly 10 can connect the first elastic element 20 and the compression spring 32. Furthermore, since the fixing boss 101 is inserted through the first fixing hole 200 of the first elastic element 20 and the second fixing hole 320 of the compression spring 32, the fixing boss 101 can effectively limit the first elastic element 20 and the compression spring 32, that is, limit the displacement of the first elastic element 20 and the compression spring 32 relative to the pushing assembly 10 along the first direction X and the third direction Z, effectively avoiding the problem of the first elastic element 20 and the compression spring 32 shifting position relative to the pushing assembly 10 in the first direction X and the third direction Z. In addition, along the second direction Y, the first elastic member 20 presses against the compression spring 32 and the pushing component 10, which can limit the first elastic member 10 in the second direction Y by the compression spring 32 and the pushing component 10, thus avoiding the problem that the auxiliary pressure provided by the first elastic member 10 is affected by the easy movement of the first elastic member 10 in the second direction Y.

[0102] In some embodiments, the moving contacts are arranged side-by-side along the third direction Z. Some of the moving contacts 31 are arc-ignition moving contacts 3101, and some are current-carrying moving contacts 3102. When the relay is in the open state, the contact gap of the moving contact 312 on the arc-ignition moving contact 3101 is smaller than the contact gap of the moving contact 312 on the current-carrying moving contact 3102. The current-carrying moving contact 3102 is correspondingly provided with a first elastic element 20. This arrangement is equivalent to providing the first elastic element 20 only on the current-carrying moving contact 3102, thereby allowing the first elastic element 20 to apply auxiliary pressure to the current-carrying moving contact 3102, which facilitates close contact between the moving contact 312 of the current-carrying moving contact 3102 and the stationary contact 60. In some embodiments, such as Figure 6 As shown, there are three moving contacts 31, which are arranged side by side along the third direction Z. The middle moving contact 31 is the arc-ignition moving contact 3101, and the two moving contacts 31 on both sides are the flow-carrying contacts 3102. Each of the two moving contacts 31 on both sides is provided with a first elastic element 20. With this arrangement, it is equivalent to providing the first elastic element 20 only on the flow-carrying contact 3102, so that the first elastic element 20 can apply auxiliary pressure to the flow-carrying contact 3102, which is conducive to the close contact between the moving contact 312 of the flow-carrying contact 3102 and the stationary contact 60.

[0103] In this embodiment, when the relay needs to be closed, the moving contact 312 of the arcing moving contact 3101 contacts the corresponding stationary contact 601 before the moving contact 312 of the carrying current contact 3102; when the relay needs to be opened, the moving contact 312 of the arcing moving contact 3101 opens the corresponding stationary contact 601 after the moving contact 312 of the carrying current contact 3102, thereby concentrating the arcing phenomenon on the arcing moving contact 3101 to extend the overall lifespan of the moving contact 312 of the carrying current contact 3102 and the relay.

[0104] Of course, in the embodiments of this application, the number of movable contacts 31 can also be other numbers. For example, the number of movable contacts 31 is two, and the two movable contacts 31 are distributed side by side along the third direction Z; or, for another example, the number of movable contacts 31 is four, and the four movable contacts 31 are distributed side by side along the third direction Z. The specific number of movable contacts 31 is not limited in the embodiments of this application.

[0105] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. 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.

[0106] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A relay, characterized in that, The relay includes: Drive components; A movable contact assembly, comprising a movable contact and a compression spring, the compression spring abutting between the push assembly and the movable contact to provide contact pressure to the movable contact during the overtravel phase; A first elastic element acts on the compression spring and applies auxiliary pressure to the compression spring at least partially during the non-contact phase and the overtravel phase, wherein at least a portion of the auxiliary pressure has a force in the same direction as the contact pressure applied by the compression spring.

2. The relay according to claim 1, characterized in that, The first elastic element acts on the compression spring at a position between the compression spring and the positions where it abuts against the pushing assembly and the moving contact.

3. The relay according to claim 1, characterized in that, The first elastic element is mounted on the pushing assembly, and the auxiliary pressure applied by the first elastic element remains unchanged during the non-contact phase.

4. The relay according to claim 1, characterized in that, As the overtravel gradually increases, the auxiliary pressure applied by the first elastic element gradually increases.

5. The relay according to claim 1, characterized in that, As the overtravel gradually increases, the position of the first elastic element acting on the compression spring gradually approaches the position where the compression spring abuts against the moving contact.

6. The relay according to claim 4 or 5, characterized in that, The first elastic member has a first abutment point, a second abutment point, and an abutment end arranged sequentially in its extension direction; the first abutment point abuts against the pushing component and is fixed relative to the pushing component; the abutment end abuts against the compression spring; during the overtravel process, the first elastic member is adapted to deform with the second abutment point as the fulcrum, and during deformation, the first elastic member is compressed and further stores energy, and the abutment end is displaced to the side away from the first abutment point.

7. The relay according to claim 1, characterized in that, The moving contact assembly includes at least two moving contacts suitable for parallel connection, or the moving contacts are provided with at least two moving contact branches suitable for parallel connection; at least one of the moving contacts is correspondingly provided with the first elastic element, or at least one of the moving contact branches is correspondingly provided with the first elastic element.

8. The relay according to claim 1, characterized in that, The compression spring acts on the moving contact at the location of the moving contact point.

9. The relay according to claim 1, characterized in that, The movable contact includes a movable contact plate and movable contacts. The movable contact plate has a first surface and a second surface on both sides in the thickness direction. The movable contacts are respectively provided at both ends of the second surface along the first direction. The first elastic member has a first end and a second end opposite to each other along a first direction; Both the first end and the second end abut against the compression spring. The compression spring has a first connecting end and a second connecting end opposite each other along the first direction. The side of the first connecting end and the second connecting end away from the first elastic member is connected to the second surface. The position where the pushing assembly abuts against the compression spring is located between the first connecting end and the second connecting end. In the first direction, the position where the first end abuts against the compression spring is located between the position where the pushing assembly abuts against the compression spring and the first connecting end, and the position where the second end abuts against the compression spring is located between the position where the pushing assembly abuts against the compression spring and the second connecting end.

10. The relay according to claim 9, characterized in that, In the second direction, the position where the first end abuts against the compression spring is opposite to the moving contact point at one end of the moving contact plate, and the position where the second end abuts against the compression spring is opposite to the moving contact point at the other end of the moving contact plate. The second direction is the direction of movement of the moving contact.

11. The relay according to claim 9, characterized in that, The compression spring further includes a first bent portion, a middle portion, and a second bent portion connected sequentially along the first direction. The middle portion is connected to the pushing assembly. The first bent portion is connected to the first connecting end so that the middle portion and the first connecting end are offset along the second direction. The second bent portion is connected to the second connecting end so that the middle portion and the second connecting end are offset along the second direction. Wherein, both the first end and the second end abut against the middle portion; or, the first end abuts against the position where the middle portion connects to the first bent portion, and the second end abuts against the position where the middle portion connects to the second bent portion.

12. The relay according to claim 9, characterized in that, The first elastic element includes a third bending portion, a connecting portion, and a fourth bending portion connected in sequence; The connecting portion abuts against and is fixed relative to the pushing component; the end of the third bent portion away from the connecting portion abuts against the compression spring; the end of the fourth bent portion away from the connecting portion abuts against the compression spring; and both the third bent portion and the fourth bent portion abut against the pushing component. When the moving contact travels beyond its travel range, the positions where the third bend abuts against the pushing component and the positions where the fourth bend abuts against the pushing component are both compressed, causing both the third and fourth bends to deform, and increasing the contact pressure provided by the third and fourth bends to the compression spring.

13. The relay according to claim 12, characterized in that, Both the third bending portion and the fourth bending portion include a first bending arm and a second bending arm. One end of the first bending arm is connected to the connecting portion, and the other end of the first bending arm is connected to one end of the second bending arm. The other end of the second bending arm abuts against the compression spring. Wherein, the first bending arm and the second bending arm form an angle with the opening facing the compression spring, and part of the second bending arm abuts against the pushing component, or, the connection position where the first bending arm and the second bending arm are connected abuts against the pushing component.

14. The relay according to claim 13, characterized in that, The other end of the second bent arm is connected to an abutment structure, which has an arc-shaped abutment surface that abuts against the compression spring.

15. The relay according to claim 14, characterized in that, The abutment structure includes at least one folded wall, which is located between the second bent arm and the compression spring. When there is one folding wall, the folding wall is stacked on top of the other end of the second bending arm and connected to the second bending arm by an arc connecting section, and the folding wall abuts against the compression spring; When there are multiple folded walls, the multiple folded walls are stacked and connected to each other, and the multiple folded walls are connected by arc connecting segments, and / or, the two folded walls that are far away from the second bending arm are connected by arc connecting segments. The folded wall that abuts against the compression spring has the abutting surface.

16. The relay according to claim 9, characterized in that, The relay also includes a second elastic element and a housing; The displacement of the two ends of the second elastic member along the first direction in the second direction is limited by the housing. The middle part of the second elastic member is connected to the pushing component and / or the moving contact component. The second elastic member is supported by the housing of the relay along the third direction and cooperates with the housing to limit the displacement of the moving contact component along the first direction.

17. The relay according to claim 16, characterized in that, The relay also includes stationary contacts that respectively cooperate with the moving contacts at both ends of the moving contact plate; the relay has a closed state and an open state; When the relay is in the closed or open state, the second elastic element applies force to the pushing component and the moving contact component in the direction of the stationary contact.

18. The relay according to claim 17, characterized in that, When the relay is in the open state, the force exerted by the second elastic element on the pushing component and the moving contact component is a first value; when the relay is in the closed state, the force exerted by the second elastic element on the pushing component and the moving contact component is a second value, wherein the first value is greater than the second value.

19. The relay according to claim 18, characterized in that, The second elastic element includes a first elastic arm, a mounting portion, and a second elastic arm connected sequentially along the first direction; The mounting portion is connected to the pushing component, and the end of the first elastic arm away from the mounting portion and the end of the second elastic arm away from the mounting portion are respectively limited and engaged with the housing along the second direction; When the relay is in the closed state, there is a first angle between the first elastic arm and the mounting part, and there is a first angle between the second elastic arm and the mounting part; when the relay is in the open state, there is a second angle between the first elastic arm and the mounting part, and there is a second angle between the second elastic arm and the mounting part, and the first angle is smaller than the second angle.

20. The relay according to claim 16, characterized in that, The second elastic member has a limiting structure at both ends opposite to each other along the first direction. The limiting structure is used to cooperate with the housing to limit the displacement of the second elastic member in the first direction and to limit the displacement of the two ends of the second elastic member along the first direction along the second direction.

21. The relay according to claim 20, characterized in that, The housing is provided with a limiting member; the limiting structure includes a limiting piece, the limiting piece is provided with a limiting hole, and the limiting member passes through the limiting hole along the third direction.

22. The relay according to claim 21, characterized in that, The dimension of the limiting hole along the first direction is greater than the dimension of the portion of the limiting member located within the limiting hole along the first direction, so that both ends of the second elastic member can extend and retract during the movement of the moving contact assembly; and / or, the dimension of the limiting hole along the second direction matches the dimension of the portion of the limiting member located within the limiting hole along the second direction.

23. The relay according to claim 16, characterized in that, The second elastic element and the first elastic element are integrally formed.

24. The relay according to claim 23, characterized in that, The first elastic element is provided with a first fixing hole, the compression spring is provided with a second fixing hole, and the pushing component is provided with a fixing boss. The fixing boss passes through the first fixing hole and the second fixing hole along a second direction to limit the displacement of the first elastic element and the compression spring relative to the pushing component along the first direction and the third direction. Along the second direction, the first elastic element presses against the compression spring and the pushing component.

25. The relay according to claim 7, characterized in that, Each of the moving contacts is arranged in parallel along a third direction. Some of the moving contacts are arc-ignition moving contacts, and some of the moving contacts are current-carrying moving contacts. When the relay is in the open state, the contact gap of the moving contacts on the arc-ignition moving contacts is smaller than the contact gap of the moving contacts on the current-carrying moving contacts. The current-carrying moving contacts are correspondingly provided with the first elastic element.

26. The relay according to claim 25, characterized in that, The number of moving contacts is three, and the three moving contacts are arranged side by side along a third direction. The moving contact in the middle of the three moving contacts is the arc-ignition moving contact, and the two moving contacts on both sides are the flow-carrying moving contacts. The first elastic element is provided on each of the two moving contacts located on both sides.

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