Relay

Abstract

The invention provides a relay. The relay comprises a contact part, a pushing structure and a holding assembly, the contact part comprises a movable contact assembly and a static contact assembly; the pushing structure can drive the movable contact assembly to move, so that the movable contact assembly and the static contact assembly are conducted or separated; the retaining assembly comprises a fixed part and a movable part; the movable part can move along with the pushing structure; a track is arranged on the surface of the movable part; the fixed part and the static contact assembly are relatively and fixedly arranged, and the fixed part is provided with a convex part; wherein the convex part can move relative to the movable part along the track and enable the movable part to rotate circumferentially, and when the convex part moves to a preset position of the track, the convex part can enable the movable part to bear the movable contact assembly so as to enable the movable contact assembly to keep conducting with the static contact assembly.

Description

Technical Field

[0001] This disclosure relates to a relay. Background Technology

[0002] A relay is an electronic control device with a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is commonly used in automatic control circuits. Essentially, it is an "automatic switch" that uses a smaller current to control a larger current, thus playing roles in automatic adjustment, safety protection, and circuit switching. High-voltage DC relays are a type of relay. Existing high-voltage DC relays, due to limitations in driving force and core holding force, and the need to ensure short-circuit withstand and current-carrying capacity, have relatively heavy moving contact components that are difficult to reduce in weight, making it difficult to meet high impact resistance requirements. Summary of the Invention

[0003] A primary objective of this disclosure is to overcome at least one of the deficiencies of the prior art described above and to provide a relay capable of meeting high shock resistance requirements.

[0004] To achieve the above objectives, the present disclosure adopts the following technical solution:

[0005] According to one aspect of this disclosure, a relay is provided, comprising a contact portion, a pushing structure, and a holding assembly; the contact portion includes a moving contact assembly and a stationary contact assembly; the pushing structure can drive the moving contact assembly to move, so that the moving contact assembly is connected or separated from the stationary contact assembly; the holding assembly includes a fixed part and a movable part; the movable part can move with the pushing structure, and a track is provided on the surface of the movable part; the fixed part is fixedly arranged relative to the stationary contact assembly, and the fixed part is provided with a protrusion; wherein the protrusion can generate relative movement with the movable part along the track, and cause the movable part to rotate circumferentially, and when the protrusion moves to a preset position on the track, the protrusion can enable the movable part to carry the moving contact assembly, thereby maintaining the connection between the moving contact assembly and the stationary contact assembly.

[0006] According to one embodiment of this disclosure, the protrusion is provided with a rolling element that is rotatable relative to the protrusion so that the protrusion makes rolling contact with the track via the rolling element.

[0007] According to one embodiment of this disclosure, the moving contact assembly and the stationary contact assembly are arranged along a first direction, and the pushing structure is movable along the first direction; the relay further includes a magnetic circuit portion, the magnetic circuit portion including a coil assembly, the coil assembly being disposed on the side of the moving contact assembly opposite to the stationary contact assembly; one end of the pushing structure is disposed in the coil assembly, and the other end is connected to the moving contact assembly; the magnetic circuit portion is capable of driving the pushing structure when the coil assembly is energized; the holding assembly is disposed between the moving contact assembly and the magnetic circuit portion, and the pushing structure passes through the holding assembly.

[0008] According to one embodiment of this disclosure, the fixing component includes a fixing sleeve, which is fixed to the magnetic circuit portion. The fixing sleeve has a cavity extending along the first direction, and the protrusion is disposed on the cavity wall. The movable component includes a movable rotor, which is disposed in the cavity. The movable rotor has a track disposed on its outer periphery, and the movable rotor can rotate circumferentially when it moves relative to the fixing sleeve along the first direction.

[0009] According to one embodiment of this disclosure, the outer periphery of the movable rotor is provided with a spiral groove, the spiral groove defining the track, the spiral groove including a first groove portion, a second groove portion, a third groove portion, and a fourth groove portion, the first groove portion and the third groove portion being arranged at intervals along the circumference of the movable rotor and extending respectively along the first direction, the second groove portion communicating between the end of the first groove portion near the coil assembly and the end of the third groove portion near the coil assembly, and the fourth groove portion communicating between the end of the first groove portion away from the coil assembly and the end of the third groove portion away from the coil assembly; wherein, when the moving contact assembly is separated from the stationary contact assembly and the coil assembly is not energized, the protrusion is located at the end of the first groove portion away from the magnetic circuit portion; the coil assembly is first... During excitation, the movable rotor rises away from the coil assembly along with the pushing structure, causing the protrusion to move to the second slot. When the coil assembly is de-excited, the movable rotor falls until the protrusion abuts against the side wall of the second slot away from the coil assembly. The protrusion carries the movable rotor, allowing the movable rotor to carry the moving contact assembly and maintain the connection between the moving contact assembly and the stationary contact assembly. When the coil assembly is excited again, the movable rotor rises away from the coil assembly along with the pushing structure, causing the protrusion to move to the end of the third slot near the rotor assembly. When the coil assembly is de-excited again, the movable rotor falls, causing the protrusion to pass through the third slot and the fourth slot in sequence and return to the end of the first slot away from the coil assembly.

[0010] According to one embodiment of this disclosure, wherein: the side wall of the first groove portion away from the third groove portion extends along the first direction, and the side wall of the first groove portion near the third groove portion extends obliquely relative to the first direction, such that the width of the first groove portion at one end away from the coil assembly is greater than the width of its other end; and / or, the side wall of the third groove portion away from the first groove portion extends along the first direction, and the side wall of the third groove portion near the first groove portion extends obliquely relative to the first direction, such that the width of the third groove portion at one end away from the coil assembly is less than the width of its other end.

[0011] According to one embodiment of this disclosure, the end of the first slot away from the coil assembly opens at the end face of the movable rotor opposite to the magnetic circuit portion.

[0012] According to one embodiment of this disclosure, the moving contact assembly is disposed on a base via an elastic member, one end of the pushing structure is connected to the base, the base can move with the pushing structure, and drive the moving contact assembly to move; wherein, the base is pressed against the opening of the first groove at the end away from the coil assembly.

[0013] According to one embodiment of this disclosure, a first limiting recess is provided on the side wall of the second groove near the coil assembly; wherein, when the protrusion is located in the first limiting recess, the first limiting recess can restrict the rotation of the movable rotor; a second limiting recess is provided on the side wall of the second groove away from the coil assembly; wherein, when the coil assembly is not energized and the moving contact assembly is in contact with the stationary contact assembly, the protrusion is located in the second limiting recess to restrict the rotation of the movable rotor.

[0014] According to one embodiment of this disclosure, wherein: the second slot near the coil assembly includes two first inclined surfaces arranged circumferentially along the movable rotor, the first inclined surfaces being inclined near the coil assembly in the direction from the first slot to the second slot, a reverse inclined surface connecting the two first inclined surfaces, the reverse inclined surface being inclined away from the coil assembly in the direction from the first slot to the second slot, and the first limiting recess being formed at the connection between the reverse inclined surface and one of the first inclined surfaces; and / or, the second slot away from the coil assembly includes two second inclined surfaces connected circumferentially along the movable rotor, the two second inclined surfaces being connected at their respective ends away from the coil assembly, such that the two second inclined surfaces together form the second limiting recess; wherein the first limiting recess and one of the two second inclined surfaces near the first slot are arranged opposite to each other in the first direction.

[0015] According to one embodiment of this disclosure, along the first direction, the end of the first groove away from the coil assembly is farther away from the coil assembly than the end of the second groove away from the coil assembly, so that the fourth groove extends obliquely.

[0016] According to one embodiment of this disclosure, the outer periphery of the movable rotor is provided with at least two grooves, and the at least two grooves are arranged at intervals along the circumference of the movable rotor; the cavity wall of the fixed sleeve cavity is provided with at least two protrusions, and the protrusions are arranged in a one-to-one correspondence with the grooves.

[0017] According to one embodiment of this disclosure, the movable rotor is made of plastic and is manufactured using an injection molding process so that the track is integrally formed on the outer periphery of the movable rotor.

[0018] According to one embodiment of this disclosure, the pushing structure includes a pushing rod and a supporting sleeve; the pushing rod passes through the movable rotor, and one end of it is connected to the moving contact assembly; the supporting sleeve is sleeved on the outer periphery of the pushing rod and is located on the side of the retaining assembly facing away from the moving contact assembly, and the supporting sleeve is made of metal; when the pushing rod moves toward the stationary contact assembly, the end of the supporting sleeve facing the movable rotor can push the movable rotor toward the stationary contact assembly; wherein, a spacer is provided at the end of the movable rotor facing the supporting sleeve, the spacer is made of metal, and the movable rotor contacts the supporting sleeve through the spacer.

[0019] According to one embodiment of this disclosure, the pushing structure includes a pushing rod and a supporting sleeve; the pushing rod passes through the retaining assembly, and one end of it is connected to the moving contact assembly; the supporting sleeve is sleeved on the outer periphery of the pushing rod and is located on the side of the retaining assembly facing away from the moving contact assembly; wherein, when the pushing rod moves toward the stationary contact assembly, the end of the supporting sleeve facing the retaining assembly can push the moving part toward the stationary contact assembly.

[0020] According to one embodiment of this disclosure, when the coil assembly is not energized and the moving contact assembly is separated from the stationary contact assembly, there is a gap between the end of the support sleeve facing the retaining assembly and the moving part.

[0021] According to one embodiment of this disclosure, the relay further includes a magnetic circuit portion, which includes a coil assembly and a yoke assembly. The yoke assembly includes a yoke plate located between the coil assembly and the contact portion. The fixing component is disposed on the side of the yoke plate facing away from the coil assembly.

[0022] According to one embodiment of this disclosure, the moving contact assembly and the stationary contact assembly are arranged along a first direction, and the pushing structure is movable along the first direction; the relay includes two stationary contact assemblies, which are arranged along a second direction perpendicular to the first direction; the two ends of the moving contact assembly in the second direction are contact ends, and the two contact ends of the moving contact assembly are respectively connected or disconnected from the two stationary contact assemblies; the relay further includes a short-circuit protection assembly, which includes a first magnetic conductor located on the side of the moving contact assembly facing the stationary contact assembly.

[0023] As can be seen from the above technical solution, the advantages and positive effects of the relay proposed in this disclosure are as follows:

[0024] The relay disclosed herein includes a contact portion, a driving structure, and a holding assembly. The contact portion includes a moving contact assembly and a stationary contact assembly. The driving structure can drive the moving contact assembly to move, thereby making or separating the moving contact assembly from the stationary contact assembly. The holding assembly includes a fixed part and a moving part. The moving part can move with the driving structure, and a track is provided on the surface of the moving part. The fixed part is fixedly arranged relative to the stationary contact assembly, and the fixed part is provided with a protrusion. The protrusion can generate relative movement with the moving part along the track, causing the moving part to rotate circumferentially. When the protrusion moves to a preset position on the track, it can enable the moving part to carry the moving contact assembly, thereby maintaining the connection between the moving contact assembly and the stationary contact assembly. Through the above design, this disclosure can use the holding assembly to realize the functions of energizing and holding the coil assembly and releasing it upon re-energization, avoiding the problem of accidental disconnection of the moving contact assembly due to impact. Furthermore, this disclosure has a simple structure, does not require sacrificing the driving force, has minimal impact on other components, and is suitable for upgrading existing products. Furthermore, the relay proposed in this disclosure only requires the coil assembly to be energized and held, and then energized again to release. The magnetic holding effect can be achieved through the mechanical structure between the protrusion and the track. Compared with the existing solutions, this disclosure does not require a magnet to achieve magnetic holding.

[0025] In one embodiment of this disclosure, the protrusion is provided with a rolling element that can rotate relative to the protrusion, so that the protrusion makes rolling contact with the track via the rolling element. Through this design, this disclosure utilizes the rolling element to achieve rolling motion between the protrusion and the track wall, thereby significantly reducing the frictional force generated between them during movement and preventing interference between the protrusion and moving parts that could cause the relay to malfunction.

[0026] In one embodiment of this disclosure, a loop-shaped groove is provided on the outer periphery of the movable rotor, defining the aforementioned track. Specifically, the loop-shaped groove includes four sections: a first section, a second section, a third section, and a fourth section. The first and third sections are arranged at intervals along the circumference of the movable rotor and extend along a first direction, respectively. The second section connects the ends of the first and third sections near the coil assembly, and the fourth section connects the ends of the first and third sections away from the coil assembly. Through the above design, this disclosure can utilize the track defined by the loop-shaped groove to guide, limit, and maintain the position of the protrusion, thereby realizing the functions of excitation holding and re-excitation release of the coil assembly, avoiding the problem of accidental disconnection due to impact of the moving contact assembly. Furthermore, during the process of the coil assembly being de-excited to the holding state, the moving iron core will retract overtravel, and the overtravel can be increased to compensate for the fall of the movable rotor. Accordingly, since the relay proposed in this disclosure does not require the coil assembly to be continuously energized when in the closed state, even if the overtravel is made large, the instantaneous large power consumption will not have a significant impact on the client because the excitation signal is only instantaneous.

[0027] In one embodiment of this disclosure, the movable rotor is made of plastic. The movable rotor is made of plastic, and a spacer made of metal is provided at the end of the movable rotor facing the support sleeve. The movable rotor contacts the support sleeve via the spacer. With this design, when the movable rotor is made of plastic and the support sleeve is made of metal, if the support sleeve and the movable rotor are in direct contact, when the movable rotor rotates, scraping will occur due to rotational friction between the movable rotor and the support sleeve. This scraping will fall into the coil assembly, causing adverse effects, and the aforementioned rotational friction can also cause rotational jamming. This disclosure uses a metal spacer to replace the movable rotor in contact with the support sleeve, changing the contact between plastic and metal to metal-to-metal contact, fundamentally solving the problem of plastic scraping and debris shedding, and making the relative rotation between the movable rotor and the support sleeve smoother.

[0028] In one embodiment of this disclosure, when the coil assembly is not energized and the moving contact assembly is separated from the stationary contact assembly, there may be a gap between the end of the support sleeve facing the holding assembly and the movable component. Through this design, this disclosure enables the moving iron core to move upwards by first moving a distance corresponding to this gap before contacting the movable rotor. At this time, since the moving iron core has already moved upwards a distance before the movable rotor, the other components initially pressed onto the movable rotor have also moved upwards relative to the movable rotor. Only then will the movable rotor contact the support sleeve and be driven upwards to rotate. During rotation, the movable rotor can avoid friction and interference with the aforementioned other components, thereby further ensuring smooth rotation of the movable rotor. Attached Figure Description

[0029] The various objectives, features, and advantages of this disclosure will become more apparent from the following detailed description of preferred embodiments of the disclosure taken in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the disclosure and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0030] Figure 1 This is a three-dimensional structural schematic diagram of a relay according to an exemplary embodiment;

[0031] Figure 2 It is along Figure 1 A sectional view of line AA in the diagram;

[0032] Figure 3 This is a three-dimensional structural diagram of a portion of the relay.

[0033] Figure 4 yes Figure 3 A three-dimensional exploded view;

[0034] Figure 5 It is along Figure 3 A sectional view made by line BB in the middle;

[0035] Figure 6 yes Figure 5 An enlarged view of part C in the image;

[0036] Figure 7 yes Figure 5 An enlarged view of part D in the image;

[0037] Figure 8 This is a schematic diagram showing the fit between the protrusion and the track;

[0038] Figure 9 This is a schematic diagram of the orbital decomposition.

[0039] Figure 10 It is a series of diagrams showing the dynamic interaction between the convex part and the track;

[0040] Figure 11 This is a three-dimensional structural diagram of the fixed sleeve;

[0041] Figure 12 This is a three-dimensional structural diagram of the movable rotor;

[0042] Figures 13 to 15 These are partial cross-sectional views of the relay according to several other exemplary embodiments.

[0043] The annotations in the attached figures are explained as follows:

[0044] 110. Moving contact assembly; 32123. First inclined plane;

[0045] 120. Static contact component; 32124. Reverse slope;

[0046] 211. Coil; 32125. Second inclined plane;

[0047] 212. Coil frame; 3213. Third slot;

[0048] 221. Moving iron core; 3214. Fourth slot;

[0049] 222. Stationary iron core; 330. Spacer;

[0050] 231. Push rod; 410. Yoke plate;

[0051] 232. Support sleeve; 420. U-shaped yoke;

[0052] 310. Fixing sleeve; 510. Base body;

[0053] 311. Protrusion; 520. Elastic element;

[0054] 312. Rolling element; 530. Limiting frame;

[0055] 320. Movable rotor; 610. First magnetic conductor;

[0056] 321. U-shaped groove; 620. Second magnetic conductor;

[0057] 3211. First groove section; 700. Ceramic cover;

[0058] 3212. Second groove; G. Clearance;

[0059] 32121. First limiting recess; S1~S6. Position;

[0060] 32122. Second limiting recess; X. First direction;

[0061] Y. Second direction. Detailed Implementation

[0062] Typical embodiments embodying the features and advantages of this disclosure will be described in detail in the following description. It should be understood that this disclosure can have various variations in different embodiments without departing from the scope of this disclosure, and the descriptions and drawings therein are for illustrative purposes only and not intended to limit this disclosure.

[0063] In the following description of various exemplary embodiments of this disclosure, reference is made to the accompanying drawings, which form part of this disclosure, and which illustrate by way of example different exemplary structures, systems, and steps that can implement various aspects of this disclosure. It should be understood that other specific embodiments of the components, structures, exemplary devices, systems, and steps may be used, and structural and functional modifications may be made without departing from the scope of this disclosure. Furthermore, while the terms “above,” “between,” “within,” etc., may be used in this specification to describe different exemplary features and elements of this disclosure, these terms are used herein only for convenience, such as the orientation according to the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of this disclosure.

[0064] See Figure 1 The illustration shows a representative three-dimensional structural diagram of the relay proposed in this disclosure. In this exemplary embodiment, the relay proposed in this disclosure is described using an application in a battery pack as an example. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to apply the relevant designs of this disclosure to other application scenarios, and these changes shall still be within the scope of the principles of the relay proposed in this disclosure.

[0065] like Figure 1 As shown, in one embodiment of this disclosure, the relay proposed in this disclosure includes a contact portion, a pushing structure, and a holding assembly. See also... Figures 2 to 11 , Figure 2 The middle section represents the direction along Figure 1 A sectional view of line AA in the diagram; Figure 3 The diagram shows a representative three-dimensional structural schematic of a portion of the relay structure. Figure 4 China representatively shows Figure 3 A three-dimensional exploded view; Figure 5 The middle section represents the direction along Figure 3 A sectional view made by line BB in the middle; Figure 6 China representatively shows Figure 5 An enlarged view of part C in the image; Figure 7 China representatively shows Figure 5 An enlarged view of part D in the image; Figure 8 The diagram shows a representative example of the fit between the protrusion 311 and the track. Figure 9 The diagram shows a representative breakdown of the orbit; Figure 10 The diagram shows a representative example of the dynamic fit between the protrusion 311 and the track. Figure 11 A three-dimensional structural schematic diagram of the fixing sleeve 310 is shown in the figure; Figure 12The figure shows a representative three-dimensional structural schematic diagram of the movable rotor 320. The structure, connection method, and functional relationship of the main components of the relay proposed in this disclosure will be described in detail below with reference to the above figures.

[0066] like Figures 1 to 6 As shown, in one embodiment of this disclosure, the contact portion includes a moving contact assembly 110 and a stationary contact assembly 120. The moving contact assembly 110 and the stationary contact assembly 120 together constitute the contact portion of the relay. Furthermore, the moving contact assembly 110 may include a moving contact piece, which, together with the push rod 231, the moving iron core 221, and other components, constitutes the moving component of the relay. Furthermore, the stationary contact assembly 120 may include a stationary contact, which, together with the ceramic cover 700, the yoke assembly, and other components, constitutes the stationary component of the relay. The pushing structure can drive the moving contact assembly 110 to move, thereby enabling or separating the moving contact assembly 110 from the stationary contact assembly 120. The holding assembly includes a fixed component and a moving component. The moving component can move with the pushing structure, and a track is provided on the surface of the moving component. The fixed component is fixedly arranged relative to the stationary contact assembly 120, and the fixed component is provided with a protrusion 311. The protrusion 311 can generate relative movement with the movable component along the track, causing the movable component to rotate circumferentially. Specifically, when the movable component moves, it will generate relative movement with the fixed component. The protrusion 311, located on the fixed component, will move relative to the movable component along with the fixed component. Since the protrusion 311 is also located within the track, it is equivalent to the protrusion 311 generating relative movement with respect to the movable component along the track when the movable component moves. Accordingly, when the protrusion 311 moves to a preset position on the track, it enables the movable component to carry the moving contact assembly 110, thus maintaining the moving contact assembly 110 in contact with the stationary contact assembly 120. Through the above design, this disclosure can utilize the holding assembly to achieve the functions of excitation holding and re-excitation release of the coil assembly, avoiding the problem of accidental disconnection of the moving contact assembly 110 due to impact. Furthermore, this disclosure has a simple structure, does not sacrifice driving suction, has minimal impact on other components, and is suitable for upgrading existing products. Furthermore, the relay proposed in this disclosure only requires the coil assembly to be energized and held, and then energized again to release. The magnetic holding effect can be achieved through the mechanical structure between the protrusion 311 and the track. Compared with the existing solutions, this disclosure does not require a magnet to achieve magnetic holding.

[0067] like Figure 6 and Figure 11As shown, in one embodiment of this disclosure, the protrusion 311 may be provided with a rolling element 312, which is rotatable relative to the protrusion 311, so that the protrusion 311 makes rolling contact with the track via the rolling element 312. Through the above design, this disclosure can utilize the rolling element 312 to achieve rolling motion between the protrusion 311 and the track wall, thereby significantly reducing the frictional force generated between them during movement and preventing interference between the protrusion 311 and the moving parts, which could lead to the relay malfunctioning.

[0068] like Figure 6 and Figure 11 As shown, based on the design of the protrusion 311 with the rolling element 312, in one embodiment of this disclosure, the rolling element 312 can be a sleeve, which is sleeved on the protrusion 311. For example, the protrusion 311 can be cylindrical and serve as the rotation axis of the sleeve. In some embodiments, the rolling element 312 can also adopt other structures, such as rollers, and is not limited to this embodiment.

[0069] like Figure 1 and Figure 2 As shown, in one embodiment of this disclosure, the moving contact assembly 110 and the stationary contact assembly 120 are arranged along a first direction X, and the pushing structure is movable along the first direction X. The relay proposed in this disclosure also includes a magnetic circuit portion, which includes a coil assembly disposed on the side of the moving contact assembly 110 opposite to the stationary contact assembly 120. One end of the pushing structure is disposed in the coil assembly, and the other end is connected to the moving contact assembly 110. The magnetic circuit portion can drive the pushing structure when the coil assembly is energized. A holding assembly is disposed between the moving contact assembly 110 and the magnetic circuit portion, and the pushing structure passes through the holding assembly.

[0070] like Figure 1 and Figure 2 As shown, in one embodiment of this disclosure, the coil assembly includes a coil 211 and a coil frame 212. The coil 211 is wound around the coil frame 212. The coil frame 212 has through holes for arranging a push rod 231, a support sleeve 232, a moving iron core 221, and a stationary iron core 222.

[0071] like Figures 2 to 5As shown, in one embodiment of this disclosure, the fixing component may include a fixing sleeve 310, which is fixed to the magnetic circuit portion. The fixing sleeve 310 has a cavity extending along a first direction X, and a protrusion 311 is disposed on the cavity wall. Furthermore, the movable component may include a movable rotor 320, which is disposed within the cavity of the fixing sleeve 310. The movable rotor 320 has the aforementioned track on its outer periphery, and can rotate circumferentially when it moves relative to the fixing sleeve 310 along the first direction X. Through the above design, this disclosure utilizes the fixing sleeve 310 with the protrusion 311, and simultaneously utilizes the fixing sleeve 310 to provide guidance and limiting for the movable rotor 320.

[0072] like Figure 4 , Figures 8 to 10 , Figure 12 As shown, based on the design of the fixed component including the fixed sleeve 310 and the movable component including the movable rotor 320, in one embodiment of this disclosure, the outer periphery of the movable rotor 320 may be provided with a loop groove 321, which defines the aforementioned track. Specifically, the loop groove 321 includes four grooves, namely a first groove 3211, a second groove 3212, a third groove 3213, and a fourth groove 3214. The first groove 3211 and the third groove 3213 are arranged circumferentially around the movable rotor 320 and extend along the first direction X, respectively. The second groove 3212 connects the end of the first groove 3211 near the coil assembly and the end of the third groove 3213 near the coil assembly. The fourth groove 3214 connects the end of the first groove 3211 away from the coil assembly and the end of the third groove 3213 away from the coil assembly. Accordingly, see reference 8 and Figure 10When the moving contact assembly 110 is separated from the stationary contact assembly 120 and the coil assembly is not energized, the protrusion 311 is located at the end of the first slot 3211 away from the magnetic circuit portion (as shown in position S1 of the protrusion 311). When the coil assembly is energized for the first time, the movable rotor 320 rises away from the coil assembly along with the push structure, causing the protrusion 311 to move to the second slot 3212 (as shown in the process of the protrusion 311 moving from position S2 to position S3). When the coil assembly is de-energized, the movable rotor 320 falls until the protrusion 311 abuts against the side wall of the second slot 3212 away from the coil assembly (as shown in the figure, after de-energization, under the action of the return spring, the protrusion 311 falls back from position S3 to position S4). The protrusion 311 carries the movable rotor 320, so that the movable rotor 320 carries the moving contact assembly 110 and keeps the moving contact assembly 110 in contact with the stationary contact assembly 120. When the coil assembly is re-energized, the movable rotor 320 rises away from the coil assembly along with the pushing structure, causing the protrusion 311 to move to the end of the third slot 3213 near the rotor assembly (as shown in position S5 of the protrusion 311). When the coil assembly is de-energized again, the movable rotor 320 falls, causing the protrusion 311 to pass sequentially through the third slot 3213 and the fourth slot 3214 back to the end of the first slot 3211 away from the coil assembly (as shown in the process of the protrusion 311 at position S5 moving to position S1 via position S6). Through the above design, this disclosure can use the track defined by the loop groove 321 to guide, limit, and hold the protrusion 311, thereby realizing the functions of energizing and releasing the coil assembly, avoiding the problem of accidental disconnection due to impact of the moving contact assembly 110. Furthermore, in Figure 8 When the convex portion 311 moves relative to the groove 321 to position S3, the coil assembly is de-energized and returns to the holding state (i.e., Figure 8 and Figure 10 During the process of the protrusion 311 moving from position S3 to position S4 relative to the groove 321, the moving iron core 221 will overtravel. The overtravel can be increased to compensate for the fall of the moving rotor 320. Accordingly, since the relay proposed in this disclosure does not require the coil assembly to be continuously energized when in the closed state, even if the overtravel is increased (meaning increased power consumption), since the excitation signal is only instantaneous, the instantaneous large power consumption will not have a significant impact on the customer.

[0073] like Figure 8 and Figure 9As shown, the movable rotor 320 is provided with a groove 321, and the groove 321 includes four grooves. In one embodiment of this disclosure, the side wall of the first groove 3211 away from the third groove 3213 can extend along the first direction X, and the side wall of the first groove 3211 near the third groove 3213 can extend at an angle relative to the first direction X, so that the width of the end of the first groove 3211 away from the coil assembly is greater than the width of the other end. Through the above design, during the process of "when the coil assembly is first energized, the movable rotor 320 rises away from the coil assembly along with the push structure", since the width of the end of the first groove 3211 away from the coil assembly is greater than the width of the other end, and at this time the movable rotor 320 moves away from the coil assembly, which is equivalent to the protrusion 311 moving towards the coil assembly relative to the fixed sleeve 310 in the first groove 3211, this disclosure utilizes this structure of the first groove 3211 to provide a guiding function for the protrusion 311 moving relative to it, so that it enters the first groove 3211 more stably and moves to the second groove 3212 via the first groove 3211, which is beneficial to improving the accuracy and stability of the relative movement of the protrusion 311 in the first groove 3211.

[0074] like Figure 8 and Figure 9 As shown, the movable rotor 320 is provided with a groove 321, and the groove 321 includes four grooves. In one embodiment of this disclosure, the side wall of the third groove 3213 away from the first groove 3211 can extend along the first direction X, and the side wall of the third groove 3213 close to the first groove 3211 can extend at an angle relative to the first direction X, so that the width of the end of the third groove 3213 away from the coil assembly is smaller than the width of its other end. Through the above design, in the process described above where "when the coil assembly is de-energized again, the movable rotor 320 falls down, causing the protrusion 311 to pass through the third slot 3213 and the fourth slot 3214 in sequence and return to the end of the first slot 3211 away from the coil assembly", since the width of the end of the third slot 3213 away from the coil assembly is smaller than the width of its other end, and at this time the movable rotor 320 moves towards the coil assembly, which is equivalent to the protrusion 311 moving away from the coil assembly relative to the fixed sleeve 310 in the third slot 3213, this disclosure utilizes this structure of the third slot 3213 to provide a guiding function for the protrusion 311 moving relative to it, making it enter the third slot 3213 more stably and move to the fourth slot 3214 via the first slot 3211, which is beneficial to improving the accuracy and stability of the relative movement of the protrusion 311 in the third slot 3213.

[0075] like Figure 8 and Figure 12As shown, based on the design of the movable rotor 320 having a groove 321 comprising four slots, in one embodiment of this disclosure, the end of the first slot 3211 away from the coil assembly can open onto the end face of the movable rotor 320 facing away from the magnetic circuit portion. Through this design, when assembling the fixed sleeve 310 and the movable rotor 320, the protrusion 311 can be moved into the groove 321 through the opening of the first slot 3211, avoiding the assembly difficulty of moving the protrusion 311 into the groove 321 when the groove 321 is not open, thus improving assembly convenience.

[0076] like Figures 3 to 5 As shown, based on the design that the end of the first groove 3211 away from the coil assembly opens onto the end face of the movable rotor 320, in one embodiment of this disclosure, the moving contact assembly 110 is mounted on a base 510 via an elastic member 520. One end of the pushing structure is connected to the base 510, and the base 510 can move with the pushing structure, thereby driving the moving contact assembly 110 to move. Based on this, the base 510 can be pressed against the opening of the first groove 3211 away from the coil assembly. Through the above design, this disclosure can use the base 510 to block the opening of the first groove 3211, preventing the protrusion 311 from moving out of the opening due to relative movement in the first groove 3211, thus ensuring the assembly stability of the protrusion 311 and the groove 321.

[0077] like Figures 3 to 5 As shown, the base 510 is connected to a limiting frame 530. The limiting frame 530 and the base 510 are assembled to form a limiting space. The moving contact component 110 is partially located within the limiting space, thereby limiting the moving contact component 110 in the first direction X and preventing the moving contact component 110 from being pushed away from the base 510 (coil assembly) by the elastic member 520 too much. Furthermore, by selecting a suitable elastic member 520, the side of the moving contact component 110 facing away from the coil assembly can abut against the limiting frame 530 in the initial state (i.e., when the moving contact component 110 is not in contact with the stationary contact component 120), thereby achieving pre-tight assembly of the moving contact component 110 using the elastic member 520.

[0078] like Figures 8 to 10 , Figure 12As shown, based on the design of the movable rotor 320 having a loop groove 321 including four groove portions, in one embodiment of this disclosure, a first limiting recess 32121 may be provided on the groove wall of the second groove portion 3212 near the coil assembly. Accordingly, when the protrusion 311 is located in the first limiting recess 32121, the first limiting recess 32121 can restrict the rotation of the movable rotor 320. Furthermore, a second limiting recess 32122 may be provided on the groove wall of the second groove portion 3212 away from the coil assembly. Accordingly, when the coil assembly is not energized and the moving contact assembly 110 is in contact with the stationary contact assembly 120, the protrusion 311 is located in the second limiting recess 32122 to restrict the rotation of the movable rotor 320. Specifically, when the coil assembly is first energized, the protrusion 311 moves along the first groove 3211 from position S1 to position S2, and then from position S2 to position S3. The moving contact assembly 110 and the stationary contact assembly 120 make contact when the protrusion 311 reaches a position between positions S1 and S2. Afterward, the protrusion 311 continues to move towards positions S2 and S3, corresponding to the overtravel process of the moving contact assembly 110. That is, when the protrusion 311 is located in the first limiting recess 32121, the moving contact assembly 110 is in contact with the stationary contact assembly 120 and is in an overtravel state. After the first energization is removed, the moving contact assembly 110 returns to its overtravel position, and the protrusion 311 moves from position S3 to position S4. Through the above design, this disclosure utilizes the first limiting recess 32121 to limit the protrusion 311, so that the movable rotor 320 is restricted by the recess under specific conditions and cannot rotate relative to the fixed sleeve 310, thus preventing it from moving along the first direction X. Simultaneously, this disclosure utilizes the second limiting recess 32122 to achieve the functions of energizing and releasing the coil assembly, avoiding the problem of accidental disconnection due to impact in the moving contact assembly 110.

[0079] like Figure 8 and Figure 9As shown, based on the design of the second groove 3212 having a first limiting recess 32121, in one embodiment of this disclosure, the groove wall of the second groove 3212 near the coil assembly may include two first inclined surfaces 32123 arranged circumferentially along the movable rotor 320. The first inclined surface 32123 is inclined near the coil assembly in the direction from the first groove 3211 to the second groove 3212. A reverse inclined surface 32124 is connected between the two first inclined surfaces 32123. The reverse inclined surface 32124 is inclined away from the coil assembly in the direction from the first groove 3211 to the second groove 3212. The first limiting recess 32121 is formed at the connection between the reverse inclined surface 32124 and one of the first inclined surfaces 32123. Through the above design, this disclosure uses the first inclined surface 32123 and the reverse inclined surface 32124 to form the first limiting recess 32121, thereby achieving the rotation restriction of the movable rotor 320 when the coil assembly is first excited and the moving contact assembly 110 contacts the stationary contact assembly 120.

[0080] like Figure 8 and Figure 9 As shown, based on the design of the second groove 3212 having a second limiting recess 32122, in one embodiment of this disclosure, the groove wall on the side of the second groove 3212 away from the coil assembly may include two second inclined surfaces 32125 connected circumferentially along the movable rotor 320. The ends of the two second inclined surfaces 32125 away from the coil assembly are connected, so that the two second inclined surfaces 32125 together form the second limiting recess 32122. Based on this, the first limiting recess 32121 and one of the two second inclined surfaces 32125 closest to the first groove 3211 are arranged opposite each other in the first direction X. Through the above design, this disclosure utilizes two second inclined surfaces 32125 to form the second limiting recess 32122, thereby limiting the rotation of the movable rotor 320 when the coil assembly is not excited and the moving contact assembly 110 is in contact with the stationary contact assembly 120. Furthermore, since the first limiting recess 32121 is arranged opposite to a second inclined surface 32125 near the first groove 3211, when the protrusion 311 is located in the first limiting recess 32121 and the coil assembly is first de-excited, the movable rotor 320 moves toward the coil assembly (for example, it falls due to its own weight and the weight of the moving contact assembly 110, the base, etc.), that is, the protrusion 311 moves away from the coil assembly relative to the movable rotor 320. At this time, it can be ensured that the protrusion 311 moves to the second inclined surface 32125 near the first groove 3211, and moves to the second limiting recess 32122 via the second inclined surface 32125, so as to accurately guide and limit the protrusion 311 and ensure the realization of the excitation holding function.

[0081] like Figure 8 and Figure 9As shown, the movable rotor 320 is provided with a loop groove 321 and the loop groove 321 includes a design of four grooves. In one embodiment of this disclosure, along the first direction X, the end of the first groove 3211 that is away from the coil assembly can be farther away from the coil assembly than the end of the second groove 3212 that is away from the coil assembly, so that the fourth groove 3214 extends obliquely. With the above design, when the coil assembly is de-energized again, the movable rotor 320 moves toward the coil assembly (e.g., it falls due to its own weight and the weight of the moving contact assembly 110, the base, etc.), that is, the protrusion 311 moves away from the coil assembly relative to the movable rotor 320. Specifically, it moves from the end of the third groove 3213 near the coil assembly to the end away from the coil assembly. Due to the above-mentioned inclined extension design of the fourth groove 3214, this disclosure enables the protrusion 311 to move automatically along the fourth groove 3214 to the end connected to the first groove 3211 when it moves relative to the end of the third groove 3213 away from the coil assembly, thereby automatically and quickly returning to the starting position of the next round of switching action (i.e., the end of the first groove 3211 away from the coil assembly, that is, the connection position between the first groove 3211 and the fourth groove 3214).

[0082] like Figure 11 and Figure 12 As shown, based on the design of the movable rotor 320 with grooves 321, in one embodiment of this disclosure, the outer periphery of the movable rotor 320 may be provided with at least two grooves 321, such as, but not limited to, the three grooves 321 shown in the figures. The at least two grooves 321 are arranged at intervals along the circumference of the movable rotor 320. Correspondingly, the cavity wall of the fixed sleeve 310 may be provided with at least two protrusions 311, such as, but not limited to, the three protrusions 311 shown in the figures. That is, the number of protrusions 311 (i.e., sleeves) is equal to the number of grooves 321, and the protrusions 311 and grooves 321 are arranged in a one-to-one correspondence. Through the above design, this disclosure can utilize the cooperation design of at least two sets of grooves 321 and protrusions 311 to achieve more uniform guiding and limiting functions for the movable rotor 320 and the fixed sleeve 310 during relative movement, further improving the accuracy and stability of the relay switch operation. Furthermore, since the moving contact assembly 110 is supported by the movable rotor 320, and the protrusion 311 and the groove 321 are in line contact, if only two sets of grooves 321 are arranged, there may be a flipping situation. Therefore, setting three or more sets of grooves 321 can provide a more stable support effect and avoid flipping. At the same time, considering that the more grooves 321 there are, the higher the requirements for the machining error of the mating dimensions of each one will be, this disclosure designs three sets of grooves 321, which can take into account the design objectives of stable support and reduced machining requirements.

[0083] like Figure 2 , Figure 4 and Figure 5As shown, in one embodiment of this disclosure, the pushing structure may include a pushing rod 231 and a support sleeve 232. The pushing rod 231 passes through the movable rotor 320, and one end of the pushing rod 231 is connected to the moving contact assembly 110. The support sleeve 232 is sleeved on the outer periphery of the pushing rod 231, and the support sleeve 232 is located on the side of the retaining assembly facing away from the moving contact assembly 110. The support sleeve 232 is made of metal. Accordingly, when the pushing rod 231 moves toward the stationary contact assembly 120, the end of the support sleeve 232 facing the movable rotor 320 can push the movable rotor 320 toward the stationary contact assembly 120.

[0084] like Figure 7 As shown, based on the design of the pushing structure including the pushing rod 231 and the support sleeve 232, in one embodiment of this disclosure, when the coil assembly is not energized and the moving contact assembly 110 is separated from the stationary contact assembly 120, that is, when the protrusion 311 is located at the end of the first groove 3211 away from the coil assembly (i.e., the protrusion 311 is located at...), Figure 8 and Figure 10 When in position S1, the support sleeve 232 facing the retaining assembly can have a gap G between itself and the movable component. Through this design, the present disclosure enables the moving iron core 221 to drive the push rod 231 upwards, first moving a distance corresponding to the gap G before contacting the movable rotor 320. At this time, since the moving iron core 221 has already moved the push rod 231 upwards a distance before the movable rotor 320, other components initially pressed onto the movable rotor 320 (such as the aforementioned base) have also moved upwards relative to the movable rotor 320. Then, the movable rotor 320 contacts the support sleeve 232 and is driven upwards, generating rotation. This occurs after the movable rotor 320 has completed a short, idle stroke corresponding to the gap G, meaning the movable component can move with the push structure. During rotation, the movable rotor 320 can avoid friction and interference with the other components, further ensuring smooth rotation of the movable rotor 320.

[0085] Based on the design of the movable component including the movable rotor 320, in one embodiment of this disclosure, the movable rotor 320 can be made of plastic, and the movable rotor 320 can be manufactured using an injection molding process so that the track is integrally formed on the outer periphery of the movable rotor 320. Through the above design, this disclosure simplifies the manufacturing process of the movable rotor 320, facilitating the one-time formation of the U-shaped groove 321 on the movable rotor 320, and achieving higher production efficiency. Furthermore, compared to metal materials, plastic has lower material costs and weight, and there is no need to consider insulation issues.

[0086] participate Figure 15 , Figure 15A partial cross-sectional view of a relay that embodies the principles of this disclosure is shown in another exemplary embodiment.

[0087] like Figure 15 As shown, in another embodiment of this disclosure, taking the push structure including push rod 231 and support sleeve 232 as an example, the movable rotor 320 can be made of plastic, and a spacer 330 can be provided at the end of the movable rotor 320 facing the support sleeve 232. The spacer 330 is made of metal, and the movable rotor 320 contacts the support sleeve 232 through the spacer 330. With the above design, when the movable rotor 320 is made of plastic and the support sleeve 232 is made of metal, if the support sleeve 232 is in direct contact with the movable rotor 320, when the movable rotor 320 rotates, scraping will occur due to the rotational friction between the movable rotor 320 and the support sleeve 232, and the debris will fall into the coil assembly, causing adverse effects. At the same time, the aforementioned rotational friction will also cause rotational jamming. This disclosure utilizes a metal spacer 330 to replace the movable rotor 320 in contact with the support sleeve 232, changing the contact between plastic and metal to metal-to-metal contact, fundamentally solving the problem of plastic scraping and shedding, and enabling smoother relative rotation between the movable rotor 320 and the support sleeve 323.

[0088] like Figures 1 to 5 As shown, in one embodiment of this disclosure, the magnetic circuit portion further includes a yoke assembly, which includes a yoke plate 410 located between the coil assembly and the contact portion. A fixing component can be disposed on the side of the yoke plate 410 facing away from the coil assembly. Additionally, the yoke assembly includes a U-shaped yoke 420, with the two ends of the yoke plate 410 respectively connected to the two ends of the U-shaped yoke 420. Thus, the yoke plate 410 and the U-shaped yoke 420 are assembled to enclose a space for accommodating the coil assembly.

[0089] like Figure 1 and Figure 2As shown, in one embodiment of this disclosure, the moving contact assembly 110 and the stationary contact assembly 120 are arranged along a first direction X, and the pushing structure can move along the first direction X. The relay proposed in this disclosure may include two stationary contact assemblies 120, which are arranged along a second direction Y perpendicular to the first direction X. Meanwhile, the two ends of the moving contact assembly 110 in the second direction Y are contact ends, and the two contact ends of the moving contact assembly 110 can be connected or disconnected from the two stationary contact assemblies 120 respectively. Wherein, when the moving contact assembly 110 includes a moving contact piece and a moving contact disposed on the moving contact piece, the aforementioned contact end can be understood as the moving contact, or it can be understood as the entirety of the moving contact and the portion of the moving contact piece used to set the moving contact. Furthermore, the moving contact piece and the moving contact can be an integral structure, or they can be two relatively independent components (e.g., fixed together by welding, riveting, etc.), neither of which limits the application in various possible embodiments conforming to the design concept of this disclosure. Based on this, the relay proposed in this disclosure may further include a short-circuit protection component, which includes a first magnetic conductor 610 located on the side of the moving contact component 110 facing the stationary contact component 120. Specifically, the first magnetic conductor 610 may be disposed on the ceramic cover 700, that is, the first magnetic conductor 610 has a fixed structure (the first magnetic conductor 610 does not move with the push rod 231). Accordingly, this disclosure can provide strong support for the fixed first magnetic conductor 610. When a short-circuit current (e.g., 30kA, exceeding the predetermined value of 20kA) is generated, this disclosure can prevent the short-circuit protection component from having a margin (designed to resist a 30kA short-circuit current) but the holding force of the moving iron core 221 is insufficient, causing the electric repulsive force to directly repel the entire moving component downwards. In other embodiments, the first magnetic conductor 610 may also be designed to follow the movement of the push rod 3321. For example, the first magnetic conductor 610 may be positioned on the side of the limiting frame 530 facing the static contact assembly 120, thereby providing sufficient support to prevent the moving assembly from falling due to insufficient holding force.

[0090] like Figure 2 As shown, based on the design of the relay including a short-circuit protection component, in one embodiment of this disclosure, the short-circuit protection component may further include a second magnetic conductor 620, which may be disposed in the limiting frame 530 and move with the push rod 321.

[0091] It should be noted that the relays shown in the accompanying drawings and described in this specification are merely a few examples of many relays capable of employing the principles of this disclosure. It should be clearly understood that the principles of this disclosure are by no means limited to any detail or component of the relays shown in the accompanying drawings or described in this specification.

[0092] In summary, the relay disclosed herein includes a contact portion, a driving structure, and a holding assembly. The contact portion includes a moving contact assembly 110 and a stationary contact assembly 120. The driving structure can drive the moving contact assembly 110 to move, thereby enabling or disengaging the moving contact assembly 110 from the stationary contact assembly 120. The holding assembly includes a fixed component and a movable component. The movable component can move with the driving structure, and a track is provided on its surface. The fixed component is fixedly arranged relative to the stationary contact assembly 120, and a protrusion 311 is provided on the fixed component. The protrusion can move relative to the movable component along the track, causing the movable component to rotate circumferentially. When the protrusion 311 moves to a preset position on the track, it enables the movable component to carry the moving contact assembly 110, thus maintaining the connection between the moving contact assembly 110 and the stationary contact assembly 120. Through the above design, this disclosure can utilize the holding assembly to achieve the functions of energizing and holding the coil assembly and releasing it upon re-energization, avoiding the problem of accidental disconnection of the moving contact assembly 110 due to impact. Furthermore, this disclosure has a simple structure, does not require sacrificing driving force, has minimal impact on other components, and is suitable for upgrading existing products. Furthermore, the relay proposed in this disclosure only requires the coil assembly to be energized and held, and then energized again to release. The magnetic holding effect can be achieved through the mechanical structure between the protrusion 311 and the track. Compared with the existing solutions, this disclosure does not require a magnet to achieve magnetic holding.

[0093] The exemplary embodiments of relays proposed in this disclosure have been described and / or illustrated in detail above. However, the embodiments of this disclosure are not limited to the specific embodiments described herein; rather, components and / or steps of each embodiment may be used independently and separately from other components and / or steps described herein. Each component and / or step of one embodiment may also be used in combination with other components and / or steps of other embodiments. In describing the elements / components / etc. described and / or illustrated herein, the terms “a,” “an,” and “the above” are used to indicate the presence of one or more elements / components / etc. The terms “comprising,” “including,” and “having” are used to indicate an open-ended inclusion and to mean that additional elements / components / etc. may exist in addition to those listed. Furthermore, the terms “first” and “second” in the claims and description are used only as illustrative marks and are not intended to limit the numerical scope of the subject matter.

[0094] Although the relays proposed in this disclosure have been described according to different specific embodiments, those skilled in the art will recognize that modifications may be made to the implementation of this disclosure within the spirit and scope of the claims.

Claims

1. A relay, characterized in that, include: The contact portion includes a moving contact assembly (110) and a stationary contact assembly (120); A pushing structure that can drive the moving contact component (110) to move, so that the moving contact component (110) can be connected or separated from the stationary contact component (120); The retaining component includes a fixed component and a movable component; the movable component can move with the pushing structure, and a track is provided on the surface of the movable component; the fixed component is fixedly arranged relative to the static contact component (120), and the fixed component is provided with a protrusion (311); wherein, the protrusion (311) can generate relative movement with the movable component along the track, and cause the movable component to rotate circumferentially, when the protrusion (311) moves to a preset position on the track, the protrusion (311) can enable the movable component to carry the moving contact component (110) so that the moving contact component (110) remains in communication with the static contact component (120).

2. The relay according to claim 1, characterized in that, The protrusion (311) is provided with a rolling element (312), which is rotatable relative to the protrusion (311) so that the protrusion (311) makes rolling contact with the track via the rolling element (312).

3. The relay according to claim 1, characterized in that, The moving contact assembly (110) and the stationary contact assembly (120) are arranged along a first direction (X), and the pushing structure is movable along the first direction (X); the relay further includes a magnetic circuit portion, the magnetic circuit portion including a coil assembly, the coil assembly being disposed on the side of the moving contact assembly (110) facing away from the stationary contact assembly (120); one end of the pushing structure is disposed in the coil assembly, and the other end is connected to the moving contact assembly (110); the magnetic circuit portion is capable of driving the pushing structure when the coil assembly is energized; the holding assembly is disposed between the moving contact assembly (110) and the magnetic circuit portion, and the pushing structure passes through the holding assembly.

4. The relay according to claim 3, characterized in that, The fixing component includes a fixing sleeve (310) fixed to the magnetic circuit portion. The fixing sleeve (310) has a cavity extending along the first direction (X). The protrusion (311) is disposed on the cavity wall. The movable component includes a movable rotor (320) disposed in the cavity. The movable rotor (320) has the track on its outer periphery. When the movable rotor (320) moves relative to the fixing sleeve (310) along the first direction (X), it can generate circumferential rotation.

5. The relay according to claim 4, characterized in that, The outer periphery of the movable rotor (320) is provided with a spiral groove (321), which defines the track. The spiral groove (321) includes a first groove (3211), a second groove (3212), a third groove (3213), and a fourth groove (3214). The first groove (3211) and the third groove (3213) are arranged circumferentially on the movable rotor (320) and extend along the first direction (X). The second groove (3212) is connected to the first groove (3211) near the first groove (3211). Between the end of the coil assembly and the third groove (3213) near the end of the coil assembly, the fourth groove (3214) communicates between the end of the first groove (3211) away from the coil assembly and the end of the third groove (3213) away from the coil assembly; wherein, when the moving contact assembly (110) is separated from the stationary contact assembly (120) and the coil assembly is not energized, the protrusion (311) is located at the end of the first groove (3211) away from the magnetic circuit portion; the coil assembly is first... During excitation, the movable rotor (320) rises away from the coil assembly along with the pushing structure, causing the protrusion (311) to move to the second slot (3212). When the coil assembly is de-excited, the movable rotor (320) falls until the protrusion (311) abuts against the side wall of the second slot (3212) away from the coil assembly. The protrusion (311) carries the movable rotor (320), causing the movable rotor (320) to carry the moving contact assembly (110), thus keeping the moving contact assembly (110) in place. The contact with the static contact assembly (120) is established; when the coil assembly is re-energized, the movable rotor (320) rises away from the coil assembly along with the pushing structure, causing the protrusion (311) to move to the end of the third slot (3213) near the rotor assembly. When the coil assembly is de-energized again, the movable rotor (320) falls, causing the protrusion (311) to pass through the third slot (3213) and the fourth slot (3214) in sequence and return to the end of the first slot (3211) away from the coil assembly.

6. The relay according to claim 5, characterized in that: The first groove (3211) extends along the first direction (X) on the side wall away from the third groove (3213), and the first groove (3211) extends obliquely relative to the first direction (X) on the side wall closer to the third groove (3213), such that the width of the first groove (3211) at the end away from the coil assembly is greater than the width of its other end; and / or The third groove (3213) extends along the first direction (X) on the side wall away from the first groove (3211), and the third groove (3213) extends at an angle relative to the first direction (X) on the side wall closer to the first groove (3211), so that the width of the third groove (3213) at the end away from the coil assembly is smaller than the width of its other end.

7. The relay according to claim 5, characterized in that, The first slot (3211) opens at one end away from the coil assembly at the end face of the movable rotor (320) facing away from the magnetic circuit portion.

8. The relay according to claim 7, characterized in that, The moving contact assembly (110) is mounted on a base (510) via an elastic member (520). One end of the pushing structure is connected to the base (510). The base (510) can move with the pushing structure and drive the moving contact assembly (110) to move. The base (510) is pressed against the opening of the first groove (3211) away from the coil assembly.

9. The relay according to claim 5, characterized in that, The second groove (3212) has a first limiting recess (32121) on the side wall near the coil assembly; wherein, when the protrusion (311) is located in the first limiting recess (32121), the first limiting recess (32121) can restrict the rotation of the movable rotor (320); the second groove (3212) has a second limiting recess (32122) on the side wall away from the coil assembly; wherein, when the coil assembly is not energized and the moving contact assembly (110) is in contact with the stationary contact assembly (120), the protrusion (311) is located in the second limiting recess (32122) to restrict the rotation of the movable rotor (320).

10. The relay according to claim 9, characterized in that: The second slot (3212) includes two first inclined surfaces arranged circumferentially along the movable rotor (320) on the side wall near the coil assembly. The first inclined surfaces are inclined close to the coil assembly in the direction from the first slot (3211) to the second slot (3212). A reverse inclined surface is connected between the two first inclined surfaces. The reverse inclined surface is inclined away from the coil assembly in the direction from the first slot (3211) to the second slot (3212). The first limiting recess (32121) is formed at the connection between the reverse inclined surface and one of the first inclined surfaces. and / or The second groove (3212) has two second inclined surfaces connected circumferentially along the movable rotor (320) on the side wall away from the coil assembly. The two second inclined surfaces are connected to the ends away from the coil assembly so that the two second inclined surfaces together form the second limiting recess (32122). The first limiting recess (32121) and one of the two second inclined surfaces closer to the first groove (3211) are arranged opposite each other in the first direction (X).

11. The relay according to claim 5, characterized in that, Along the first direction (X), the end of the first groove (3211) away from the coil assembly is farther from the coil assembly than the end of the second groove (3212) away from the coil assembly, so that the fourth groove (3214) extends obliquely.

12. The relay according to claim 5, characterized in that, The outer periphery of the movable rotor (320) is provided with at least two grooves (321), and the at least two grooves (321) are arranged at intervals along the circumference of the movable rotor (320); The cavity wall of the fixed sleeve (310) is provided with at least two protrusions (311), and the protrusions (311) are arranged in a one-to-one correspondence with the groove (321).

13. The relay according to claim 4, characterized in that, The movable rotor (320) is made of plastic and is manufactured by injection molding so that the track is integrally formed on the outer periphery of the movable rotor (320).

14. The relay according to claim 13, characterized in that, The pushing structure includes a pushing rod (231) and a support sleeve (232); the pushing rod (231) passes through the movable rotor (320), and one end is connected to the moving contact assembly (110); the support sleeve (232) is sleeved on the outer periphery of the pushing rod (231) and is located on the side of the retaining assembly facing away from the moving contact assembly (110), and the support sleeve (232) is made of metal; the pushing rod (231) faces the stationary contact assembly (110). 20) During movement, the end of the support sleeve (232) facing the movable rotor (320) can push the movable rotor (320) toward the static contact assembly (120); wherein, the end of the movable rotor (320) facing the support sleeve (232) is provided with a spacer (330), the spacer (330) is made of metal, and the movable rotor (320) contacts the support sleeve (232) through the spacer (330).

15. The relay according to claim 4, characterized in that, The pushing structure includes a pushing rod (231) and a support sleeve (232); the pushing rod (231) passes through the retaining assembly, and one end of it is connected to the moving contact assembly (110); the support sleeve (232) is sleeved on the outer periphery of the pushing rod (231) and is located on the side of the retaining assembly facing away from the moving contact assembly (110); wherein, when the pushing rod (231) moves toward the stationary contact assembly (120), the end of the support sleeve (232) facing the retaining assembly can push the moving part toward the stationary contact assembly (120).

16. The relay according to claim 15, characterized in that, When the coil assembly is not energized and the moving contact assembly (110) is separated from the stationary contact assembly (120), there is a gap (G) between the end of the support sleeve (232) facing the retaining assembly and the moving part.

17. The relay according to claim 1, characterized in that, The relay further includes a magnetic circuit portion, which includes a coil assembly and a yoke assembly. The yoke assembly includes a yoke plate located between the coil assembly and the contact portion. The fixing component is disposed on the side of the yoke plate facing away from the coil assembly.

18. The relay according to claim 1, characterized in that, The moving contact assembly (110) and the stationary contact assembly (120) are arranged along a first direction (X), and the pushing structure is movable along the first direction (X); the relay includes two stationary contact assemblies (120), which are arranged along a second direction (Y) perpendicular to the first direction (X); the two ends of the moving contact assembly (110) in the second direction (Y) are contact ends, and the two contact ends of the moving contact assembly (110) are respectively connected or disconnected from the two stationary contact assemblies (120); the relay also includes a short-circuit protection assembly, which includes a first magnetic conductor (610), which is located on the side of the moving contact assembly (110) facing the stationary contact assembly (120).

Images