Relay

Abstract

The utility model 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] The present disclosure relates to a relay. BACKGROUND

[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), which is usually applied in an automatic control circuit. It is actually a kind of "automatic switch" that uses a small current to control a large current, and thus plays a role in automatic regulation, safety protection, and circuit conversion in the circuit. High-voltage direct-current relays are a kind of relays. Due to the limitations of driving force and core holding force, and the need to ensure short-circuit resistance and current-carrying capacity, the weight of the moving contact assembly of the existing high-voltage direct-current relays is large and difficult to reduce, and it is difficult to meet the higher impact resistance requirements. CONTENT OF THE UTILITY MODEL

[0003] One of the main purposes of the present disclosure is to overcome at least one of the defects of the prior art described above, and to provide a relay that can meet higher impact resistance requirements.

[0004] To achieve the above-mentioned purpose, the present disclosure adopts the following technical solutions:

[0005] According to one aspect of the present disclosure, a relay is provided, which includes 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 and the stationary contact assembly are in conduction or separated. The holding assembly includes a fixed component and a movable component. The movable component can move with the pushing structure, and the surface of the movable component is provided with a track. The fixed component is arranged in a fixed manner opposite to the stationary contact assembly, and the fixed component is provided with a protruding portion. The protruding portion can produce relative movement along the track with the movable component, and make the movable component rotate circumferentially. When the protruding portion moves to a preset position of the track, the protruding portion can make the movable component carry the moving contact assembly, so that the moving contact assembly remains in conduction with the stationary contact assembly.

[0006] According to one of the embodiments of the present disclosure, the protruding portion is provided with a rolling element, which can rotate relative to the protruding portion, so that the protruding portion is in rolling contact with the track via the rolling element.

[0007] According to one of the embodiments of the present 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 comprises a magnetic circuit part, the magnetic circuit part comprises a coil assembly, the coil assembly is arranged on a side of the moving contact assembly away from the stationary contact assembly; one end of the pushing structure is arranged in the coil assembly, and the other end of the pushing structure is connected to the moving contact assembly; the magnetic circuit part is capable of driving the pushing structure when the coil assembly is energized; the holding assembly is arranged between the moving contact assembly and the magnetic circuit part, and the pushing structure passes through the holding assembly.

[0008] According to one of the embodiments of the present disclosure, the fixed component comprises a fixed sleeve, the fixed sleeve is fixed to the magnetic circuit part, the fixed sleeve is provided with a sleeve cavity penetrating along the first direction, and the convex part is arranged on a cavity wall of the sleeve cavity; the movable component comprises a movable rotor, the movable rotor is arranged in the sleeve cavity, and an outer periphery of the movable rotor is provided with the track; the movable rotor is capable of rotating circumferentially when moving relative to the fixed sleeve along the first direction.

[0009] According to one of the embodiments of the present disclosure, the outer periphery of the movable rotor is provided with a U-shaped groove, the U-shaped groove defines the track, the U-shaped groove comprises a first groove part, a second groove part, a third groove part and a fourth groove part, the first groove part and the third groove part are arranged at intervals along the circumferential direction of the movable rotor and respectively extend along the first direction, the second groove part is communicated between an end of the first groove part close to the coil assembly and an end of the third groove part close to the coil assembly, and the fourth groove part is communicated between an end of the first groove part away from the coil assembly and an end of the third groove part away from the coil assembly; when the moving contact assembly is separated from the stationary contact assembly and the coil assembly is not energized, the convex part is located at an end of the first groove part away from the magnetic circuit part; when the coil assembly is energized for the first time, the movable rotor rises with the pushing structure away from the coil assembly, so that the convex part moves to the second groove part; when the coil assembly is de-energized, the movable rotor falls until the convex part abuts against a side groove wall of the second groove part away from the coil assembly, the convex part carries the movable rotor, so that the movable rotor carries the moving contact assembly to keep the moving contact assembly in conduction with the stationary contact assembly; when the coil assembly is energized again, the movable rotor rises with the pushing structure away from the coil assembly, so that the convex part moves to an end of the third groove part close to the coil assembly; when the coil assembly is de-energized again, the movable rotor falls, so that the convex part passes through the third groove part and the fourth groove part in sequence and returns to the end of the first groove part away from the coil assembly.

[0010] According to one of the embodiments of the present disclosure, the side wall of the first slot portion away from the third slot portion extends along the first direction, and the side wall of the first slot portion close to the third slot portion extends obliquely relative to the first direction, so that the width of the first slot portion away from one end of the coil assembly is greater than the width of the first slot portion away from the other end of the coil assembly; and / or, the side wall of the third slot portion away from the first slot portion extends along the first direction, and the side wall of the third slot portion close to the first slot portion extends obliquely relative to the first direction, so that the width of the third slot portion away from one end of the coil assembly is less than the width of the third slot portion away from the other end of the coil assembly.

[0011] According to one of the embodiments of the present disclosure, the first slot portion is open at one end away from the coil assembly on the end surface of the movable rotor facing away from the magnetic circuit portion.

[0012] According to one of the embodiments of the present disclosure, the movable contact assembly is arranged on a seat via an elastic member, one end of the pushing structure is connected to the seat, the seat can move with the pushing structure and drive the movable contact assembly to move; wherein the seat is pressed at the opening of the first slot portion away from one end of the coil assembly.

[0013] According to one of the embodiments of the present disclosure, the side wall of the second slot portion close to the coil assembly is provided with a first limiting recess; wherein when the convex portion is located in the first limiting recess, the first limiting recess can limit the rotation of the movable rotor; the side wall of the second slot portion away from the coil assembly is provided with a second limiting recess; wherein when the coil assembly is not excited and the movable contact assembly is in contact with the static contact assembly, the convex portion is located in the second limiting recess to limit the rotation of the movable rotor.

[0014] According to one of the embodiments of the present disclosure, wherein: the side wall of the second slot portion close to the coil assembly includes two first inclined surfaces arranged along the circumference of the movable rotor, the first inclined surfaces are inclined close to the coil assembly in the direction from the first slot portion to the second slot portion, and an inverse inclined surface is connected between the two first inclined surfaces, the inverse inclined surface is inclined away from the coil assembly in the direction from the first slot portion to the second slot portion, and the first limiting recess is formed at the connection between the inverse inclined surface and one of the first inclined surfaces; and / or, the side wall of the second slot portion away from the coil assembly includes two second inclined surfaces connected along the circumference of the movable rotor, and the end portions of the two second inclined surfaces away from the coil assembly are connected, so 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 close to the first slot portion are arranged opposite in the first direction.

[0015] According to one of the embodiments of the present disclosure, the first slot portion is farther away from the coil assembly than the second slot portion is farther away from the coil assembly in the first direction, so that the fourth slot portion is inclinedly extended.

[0016] According to one of the embodiments of the present disclosure, the outer periphery of the movable rotor is provided with at least two of the back-shaped slot portions, and the at least two back-shaped slot portions are arranged at intervals along the circumferential direction of the movable rotor; the cavity wall of the fixed sleeve cavity is provided with at least two of the convex portions, and the convex portions are arranged one by one corresponding to the back-shaped slot portions.

[0017] According to one of the embodiments of the present disclosure, the material of the movable rotor is plastic, and the movable rotor is manufactured by an injection molding process, so that the track is integrally formed on the outer periphery of the movable rotor.

[0018] According to one of the embodiments of the present disclosure, the pushing structure comprises a pushing rod and a supporting sleeve; the pushing rod passes through the movable rotor and is connected to the dynamic contact assembly at one end; the supporting sleeve is sleeved on the outer periphery of the pushing rod and is located on the side of the retaining assembly away from the dynamic contact assembly; the material of the supporting sleeve is metal; when the pushing rod moves towards the static contact assembly, the end of the supporting sleeve facing the movable rotor can push the movable rotor to move towards the static contact assembly; wherein the end of the movable rotor facing the supporting sleeve is provided with a spacer, and the material of the spacer is metal; the movable rotor is in contact with the supporting sleeve through the spacer.

[0019] According to one of the embodiments of the present disclosure, the pushing structure comprises a pushing rod and a supporting sleeve; the pushing rod passes through the retaining assembly and is connected to the dynamic contact assembly at one end; the supporting sleeve is sleeved on the outer periphery of the pushing rod and is located on the side of the retaining assembly away from the dynamic contact assembly; wherein when the pushing rod moves towards the static contact assembly, the end of the supporting sleeve facing the retaining assembly can push the movable component to move towards the static contact assembly.

[0020] According to one of the embodiments of the present disclosure, when the coil assembly is not energized and the dynamic contact assembly is separated from the static contact assembly, there is a gap between the end of the supporting sleeve facing the retaining assembly and the movable component.

[0021] According to one of the embodiments of the present disclosure, the relay further comprises a magnetic circuit portion, the magnetic circuit portion comprises a coil assembly and a yoke assembly, the yoke assembly comprises a yoke plate, and the yoke plate is located between the coil assembly and the contact portion; wherein the fixed component is arranged on the side of the yoke plate away from the coil assembly.

[0022] According to one of the embodiments of the present 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 comprises two stationary contact assemblies arranged along a second direction perpendicular to the first direction; two ends of the moving contact assembly in the second direction are respectively contact ends, and the two contact ends of the moving contact assembly are respectively in conduction or separation with the two stationary contact assemblies; the relay further comprises an anti-short circuit assembly comprising a first magnetic conductor, and the first magnetic conductor is located on a side of the moving contact assembly facing the stationary contact assemblies.

[0023] From the above technical solutions, the relay provided by the present disclosure has the following advantages and positive effects:

[0024] The relay provided by the present disclosure comprises a contact part, a pushing structure and a retaining assembly; the contact part comprises a moving contact assembly and a stationary contact assembly; the pushing structure can drive the moving contact assembly to move, so as to make the moving contact assembly in conduction or separation with the stationary contact assembly; the retaining assembly comprises a fixed component and a movable component; the movable component can move with the pushing structure, and a track is arranged on a surface of the movable component; the fixed component is arranged in fixed opposition to the stationary contact assembly, and the fixed component is provided with a convex part; the convex part can produce relative movement along the track with the movable component, and make the movable component produce circumferential rotation; when the convex part moves to a preset position of the track, the movable component can carry the moving contact assembly, so as to make the moving contact assembly keep in conduction with the stationary contact assembly. Through the above design, the present disclosure can realize the functions of coil assembly excitation retention and re-excitation release by using the retaining assembly, so as to avoid the problem of impact mis-disconnection of the moving contact assembly. Moreover, the present disclosure has simple structure, does not need to sacrifice the driving suction force, has less influence on other components, and is suitable for upgrading and transformation of existing products. Furthermore, the relay provided by the present disclosure only needs to excite, retain and release the coil assembly, and the magnetic retention effect can be realized by the cooperation of the mechanical structure between the convex part and the track, compared with the existing scheme, the present disclosure does not need to use a magnetic steel to realize magnetic retention.

[0025] In one embodiment of the present disclosure, the convex part is provided with a rolling element, and the rolling element can rotate relative to the convex part, so that the convex part is in rolling contact with the track wall surface through the rolling element. Through the above design, the present disclosure can realize the rolling movement of the convex part and the track wall surface by using the rolling element, so as to significantly reduce the friction force generated between the two during movement, and avoid the interference between the convex part and the movable component, so as to cause the relay to fail to operate normally.

[0026] In an embodiment of the present disclosure, the outer periphery of the movable rotor is provided with a back-shaped groove, which defines the track described above. Specifically, the back-shaped groove includes four groove portions, which are a first groove portion, a second groove portion, a third groove portion and a fourth groove portion respectively. The first groove portion and the third groove portion are arranged at intervals along the circumferential direction of the movable rotor and extend along the first direction respectively, the second groove portion is connected between the end of the first groove portion close to the coil assembly and the end of the third groove portion close to the coil assembly, and the fourth groove portion is connected 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. Through the above design, the present disclosure can realize the guidance, limiting and position keeping of the convex portion by the track defined by the back-shaped groove, thereby realizing the functions of the excitation keeping and the re-excitation release of the coil assembly, and avoiding the problem of impact mis-disconnection of the movable contact assembly. Furthermore, during the process of the coil assembly being de-excited to the keeping state, the moving iron core will retreat the overtravel, and the overtravel can be made larger to compensate for the rebound of the movable rotor. Accordingly, since the relay proposed in the present disclosure does not need the coil assembly to be powered on all the time to keep in the closed state, even if the overtravel is made larger, since the excitation signal is only transient, the transient large power consumption will not have a great impact on the client.

[0027] In an embodiment of the present disclosure, the material of the movable rotor is plastic. The material of the movable rotor is plastic, and the end of the movable rotor facing the support sleeve is provided with a spacer, the material of the spacer is metal, and the movable rotor is in contact with the support sleeve through the spacer. Through the above design, when the material of the movable rotor is plastic and the material of the support sleeve is metal, if the support sleeve is directly in contact with the movable rotor, when the movable rotor rotates, it will generate a scraping problem due to the rotating friction between the movable rotor and the support sleeve, and the debris will fall into the coil assembly to cause adverse effects, and the above rotating friction will also cause rotating jam. The present disclosure uses a metal spacer to replace the movable rotor to contact the support sleeve, changes the contact between plastic and metal to the contact between metal and metal, fundamentally solves the problem of plastic scraping and debris, and enables the relative rotation between the movable rotor and the support sleeve to be smoother.

[0028] In an embodiment of the present disclosure, when the coil assembly is not excited and the movable contact assembly is separated from the static contact assembly, there can be a gap between the end of the support sleeve facing the keeping assembly and the movable component. Through the above design, when the moving iron core drives the push rod to move upward, it first moves a stroke corresponding to the gap and then contacts the movable rotor. At this time, since the moving iron core drives the push rod to move upward by a stroke before the movable rotor, the other components pressed on the movable rotor in the initial state have also moved upward by a stroke relative to the movable rotor. Then, the movable rotor contacts the support sleeve to be driven to move upward and rotate. At this time, the movable rotor can avoid friction and interference with the above-mentioned other components during rotation, thereby further ensuring the smoothness of the rotation of the movable rotor. BRIEF DESCRIPTION OF DRAWINGS

[0029] Various objects, features and advantages of the present disclosure will become more apparent from the following detailed description of preferred embodiments of the present disclosure when considered in conjunction with the accompanying drawings. The drawings are not necessarily to scale, and certain components in the drawings can be exaggerated in order to illustrate aspects of the disclosure. In the drawings, like reference numerals refer to like parts throughout the various views unless otherwise indicated. Among the other things, the application will address the following:

[0030] Figure 1 is a perspective structural schematic view of a relay according to an exemplary embodiment;

[0031] Figure 2 is a cross-sectional view taken along the straight line A-A in Figure 1 ;

[0032] Figure 3 is a perspective structural schematic view of a partial structure of a relay;

[0033] Figure 4 is a perspective exploded schematic view of Figure 3 ;

[0034] Figure 5 is a cross-sectional view taken along the straight line B-B in Figure 3 ;

[0035] Figure 6 is an enlarged view of the portion C in Figure 5 ;

[0036] Figure 7 is an enlarged view of the portion D in Figure 5 ;

[0037] Figure 8 is a schematic view of the cooperation of the convex portion and the track;

[0038] Figure 9 is an exploded schematic view of the track;

[0039] Figure 10 is a dynamic cooperation group view of the convex portion and the track;

[0040] Figure 11 is a perspective structural schematic view of a fixed sleeve;

[0041] Figure 12 is a perspective structural schematic view of a movable rotor;

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

[0043] The reference signs are explained as follows:

[0044] 110. movable contact assembly; 32123. first inclined surface;

[0045] 120. static contact assembly; 32124. second bevel;

[0046] 211. coil; 32125. second bevel;

[0047] 212. coil holder; 3213. third slot portion;

[0048] 221. moving iron core; 3214. fourth slot portion;

[0049] 222. static iron core; 330. spacer;

[0050] 231. push rod; 410. yoke plate;

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

[0052] 310. fixing sleeve; 510. seat body;

[0053] 311. convex portion; 520. elastic member;

[0054] 312. rolling member; 530. limiting frame;

[0055] 320. movable rotor; 610. first magnetic conductor;

[0056] 321. back-shaped slot; 620. second magnetic conductor;

[0057] 3211. first slot portion; 700. ceramic cover;

[0058] 3212. second slot portion; G. gap;

[0059] 32121. first limiting recess; S1-S6. position;

[0060] 32122. second limiting recess; X. first direction;

[0061] Y. second direction. DETAILED DESCRIPTION

[0062] Typical embodiments embodying the features and advantages of the present disclosure will be described in detail in the following description. It should be understood that the present disclosure can be varied in a wide range of embodiments, all of which do not depart from the scope of the present disclosure, and the description and drawings are essentially illustrative in nature, rather than limiting the present disclosure.

[0063] In the following description of various example embodiments of the present disclosure, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various example structures, systems, and steps in which aspects of the present disclosure can be practiced. It is understood that other specific arrangements of parts, structures, example devices, systems, and steps can be utilized and structural and functional modifications can be made without departing from the scope of the present disclosure. Also, while the terms "over," "between," "inside," "on," "under," and the like, can be used in this specification to describe relative location, such terms are placed herein merely for convenience, e.g., based at least in part on the orientation of the examples as shown in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of the present disclosure.

[0064] Referring to Figure 1 , a perspective view schematically shows a relay according to the present disclosure. In this example embodiment, the relay according to the present disclosure is described by way of example as applied to a battery pack. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes can be made to the specific embodiments described below without departing from the principles of the relay according to the present disclosure.

[0065] As shown in Figure 1 , in an embodiment of the present disclosure, the relay according to the present disclosure includes a contact portion, a pushing structure, and a retaining assembly. Referring to Figures 2 to 11 , Figure 2 , a cross-sectional view taken along line A-A in Figure 1 is schematically shown; Figure 3 , a perspective view schematically shows a partial structure of the relay; Figure 4 , a perspective exploded view of Figure 3 is schematically shown; Figure 5 , a cross-sectional view taken along line B-B in Figure 3 is schematically shown; Figure 6 , an enlarged view of portion C in Figure 5 is schematically shown; Figure 7 , an enlarged view of portion D in Figure 5 is schematically shown; Figure 8 , a schematic view of the cooperation between the protrusion 311 and the track is schematically shown; Figure 9 , a schematic view of the exploded track is schematically shown; Figure 10 , a schematic view of the dynamic cooperation between the protrusion 311 and the track is schematically shown; Figure 11 , a perspective view schematically shows the fixing sleeve 310; and Figure 12FIG. 320 schematically shows a three-dimensional structure of the moving rotor 320. In the following, with reference to the above-mentioned drawings, the structures, connection manners, and functional relationships of the main components of the relay proposed in the present disclosure will be described in detail.

[0066] As Figures 1 to 6 shown, in an embodiment of the present disclosure, the contact part includes a moving contact assembly 110 and a stationary contact assembly 120. Among them, the moving contact assembly 110 and the stationary contact assembly 120 together constitute the contact part of the relay. In addition, the moving contact assembly 110 may include a moving contact piece, and the moving contact piece, the push rod 231, the moving iron core 221 and other components together constitute the moving component of the relay. Furthermore, the stationary contact assembly 120 may include a stationary contact, and the stationary contact, the ceramic cover 700, the yoke iron assembly and other components together constitute the stationary component of the relay. The pushing structure can drive the moving contact assembly 110 to move, so that the moving contact assembly 110 is conducted or separated from the stationary contact assembly 120. The holding component includes a fixed part and a movable part. The movable part can move along 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 120, and a convex portion 311 is provided on the fixed part. Among them, the convex portion 311 can generate a relative movement along the track with the movable part and cause the movable part to rotate circumferentially. Specifically, when the movable part moves, a relative movement will occur with the fixed part, and the convex portion 311 provided on the fixed part will move relative to the movable part along with the fixed part. Since the convex portion 311 is also located within the track, it is equivalent to that the convex portion 311 can generate a movement along the track relative to the movable part when the movable part moves. Accordingly, when the convex portion 311 moves to a preset position of the track, the convex portion 311 can cause the movable part to carry the moving contact assembly 110 and keep the moving contact assembly 110 in conduction with the stationary contact assembly 120. Through the above design, the present disclosure can utilize the holding component to achieve the functions of excitation holding and re-excitation release of the coil assembly, and avoid the problem of impact mis-disconnection of the moving contact assembly 110. Moreover, the structure of the present disclosure is simple, without sacrificing the driving suction force, and has little influence on other components, which is suitable for the transformation and upgrading of existing products. Furthermore, the relay proposed in the present disclosure only needs the coil assembly to be excited and held, and re-excited and released, and the magnetic holding effect can be achieved through the cooperation of the mechanical structure between the convex portion 311 and the track. Compared with the existing solutions, the present disclosure does not require a permanent magnet to achieve magnetic holding.

[0067] As Figure 6 and Figure 11As shown in FIG. 1, in an embodiment of the present disclosure, the protrusion 311 can be provided with a rolling member 312, which is rotatable relative to the protrusion 311, so that the protrusion 311 is in rolling contact with the track wall surface via the rolling member 312. With the above design, the present disclosure can realize the rolling movement of the protrusion 311 and the track wall surface by means of the rolling member 312, thereby significantly reducing the friction generated between the two when in motion, and avoiding the interference between the protrusion 311 and the moving parts, which can cause the relay to fail to operate normally.

[0068] As shown in FIG. 1, in an embodiment of the present disclosure, the protrusion 311 can be provided with a rolling member 312, which is rotable relative to the protrusion 311, so that the protrusion 311 is in rolling contact with the track wall surface via the rolling member 312. With the above design, the present disclosure can realize the rolling movement of the protrusion 311 and the track wall surface by means of the rolling member 312, thereby significantly reducing the friction generated between the two when in motion, and avoiding the interference between the protrusion 311 and the moving parts, which can cause the relay to fail to operate normally. Figure 6 Figure 11 As shown in FIG. 1, in an embodiment of the present disclosure, the protrusion 311 can be provided with a rolling member 312, which is rotable relative to the protrusion 311, so that the protrusion 311 is in rolling contact with the track wall surface via the rolling member 312. With the above design, the present disclosure can realize the rolling movement of the protrusion 311 and the track wall surface by means of the rolling member 312, thereby significantly reducing the friction generated between the two when in motion, and avoiding the interference between the protrusion 311 and the moving parts, which can cause the relay to fail to operate normally.

[0069] As shown in FIG. 1, in an embodiment of the present disclosure, the protrusion 311 can be provided with a rolling member 312, which is rotable relative to the protrusion 311, so that the protrusion 311 is in rolling contact with the track wall surface via the rolling member 312. With the above design, the present disclosure can realize the rolling movement of the protrusion 311 and the track wall surface by means of the rolling member 312, thereby significantly reducing the friction generated between the two when in motion, and avoiding the interference between the protrusion 311 and the moving parts, which can cause the relay to fail to operate normally. Figure 1 Figure 2 As shown in FIG. 1, in an embodiment of the present disclosure, the protrusion 311 can be provided with a rolling member 312, which is rotable relative to the protrusion 311, so that the protrusion 311 is in rolling contact with the track wall surface via the rolling member 312. With the above design, the present disclosure can realize the rolling movement of the protrusion 311 and the track wall surface by means of the rolling member 312, thereby significantly reducing the friction generated between the two when in motion, and avoiding the interference between the protrusion 311 and the moving parts, which can cause the relay to fail to operate normally.

[0070] As shown in FIG. 1, in an embodiment of the present disclosure, the protrusion 311 can be provided with a rolling member 312, which is rotable relative to the protrusion 311, so that the protrusion 311 is in rolling contact with the track wall surface via the rolling member 312. With the above design, the present disclosure can realize the rolling movement of the protrusion 311 and the track wall surface by means of the rolling member 312, thereby significantly reducing the friction generated between the two when in motion, and avoiding the interference between the protrusion 311 and the moving parts, which can cause the relay to fail to operate normally. Figure 1 Figure 2 As shown in FIG. 1, in an embodiment of the present disclosure, the protrusion 311 can be provided with a rolling member 312, which is rotable relative to the protrusion 311, so that the protrusion 311 is in rolling contact with the track wall surface via the rolling member 312. With the above design, the present disclosure can realize the rolling movement of the protrusion 311 and the track wall surface by means of the rolling member 312, thereby significantly reducing the friction generated between the two when in motion, and avoiding the interference between the protrusion 311 and the moving parts, which can cause the relay to fail to operate normally.

[0071] As shown in FIG. 1, in an embodiment of the present disclosure, the protrusion 311 can be provided with a rolling member 312, which is rotable relative to the protrusion 311, so that the protrusion 311 is in rolling contact with the track wall surface via the rolling member 312. With the above design, the present disclosure can realize the rolling movement of the protrusion 311 and the track wall surface by means of the rolling member 312, thereby significantly reducing the friction generated between the two when in motion, and avoiding the interference between the protrusion 311 and the moving parts, which can cause the relay to fail to operate normally. Figures 2 to 5 ​​​As shown, in an embodiment of the present disclosure, the fixed component can include a fixed sleeve 310 fixed to the magnetic circuit part, the fixed sleeve 310 being provided with a sleeve cavity penetrating along the first direction X, and the convex part 311 being arranged on the cavity wall of the sleeve cavity. Moreover, the movable component can include a movable rotor 320 arranged in the sleeve cavity of the fixed sleeve 310, the movable rotor 320 being provided with the above-mentioned track on the outer periphery, and the movable rotor 320 being able to produce circumferential rotation when moving along the first direction X relative to the fixed sleeve 310. Through the above design, the present disclosure can set the convex part 311 by using the fixed sleeve 310, and at the same time, provide guiding and limiting effects for the movable rotor 320 by using the fixed sleeve 310.

[0072] As shown in FIG. 8 and FIG. 9, Figure 4 , Figures 8 to 10 , Figure 12 As shown, based on the design that the fixed component includes the fixed sleeve 310 and the movable component includes the movable rotor 320, in an embodiment of the present disclosure, the outer periphery of the movable rotor 320 can be provided with a back-shaped groove 321 defining the above-mentioned track. Specifically, the back-shaped groove 321 includes four groove parts, which are respectively a first groove part 3211, a second groove part 3212, a third groove part 3213 and a fourth groove part 3214. The first groove part 3211 and the third groove part 3213 are arranged at intervals along the circumferential direction of the movable rotor 320 and respectively extend along the first direction X, the second groove part 3212 is communicated between the end of the first groove part 3211 close to the coil assembly and the end of the third groove part 3213 close to the coil assembly, and the fourth groove part 3214 is communicated between the end of the first groove part 3211 away from the coil assembly and the end of the third groove part 3213 away from the coil assembly. Accordingly, in combination with FIG. 8 and FIG. 9, Figure 10, the convex part 311 is located at one end of the first groove part 3211 away from the magnetic circuit part (as shown in the position S1 of the convex part 311). When the coil assembly is excited for the first time, the movable rotor 320 is lifted away from the coil assembly with the pushing structure, so that the convex part 311 moves to the second groove part 3212 (as shown in the process of moving the convex part 311 from the position S2 to the position S3). When the coil assembly is de-excited, the movable rotor 320 falls down until the convex part 311 abuts against the side groove wall of the second groove part 3212 away from the coil assembly (as shown, under the action of the return spring, the convex part 311 falls back from the position S3 to the position S4 after de-excitation). The convex part 311 bears the movable rotor 320, so that the movable rotor 320 bears the moving contact assembly 110 and makes the moving contact assembly 110 keep conductive with the stationary contact assembly 120. When the coil assembly is excited again, the movable rotor 320 is lifted away from the coil assembly with the pushing structure, so that the convex part 311 moves to one end of the third groove part 3213 close to the coil assembly (as shown in the position S5 of the convex part 311). When the coil assembly is de-excited again, the movable rotor 320 falls down, so that the convex part 311 passes through the third groove part 3213 and the fourth groove part 3214 in sequence and returns to one end of the first groove part 3211 away from the coil assembly (as shown in the process of moving the convex part 311 from the position S5 to the position S1 via the position S6). Through the above design, the convex part 311 can be guided, limited and position-kept by the track defined by the return groove 321, so as to realize the functions of keeping the coil assembly excited, releasing the coil assembly excited again and avoiding the impact mis-disconnection of the moving contact assembly 110. In addition, in the process of moving the convex part 311 relative to the return groove 321 from the position S3 to the position S4 as shown, the moving iron core 221 can retreat over the stroke, and the overstroke can be made larger to compensate for the fall of the movable rotor 320. Therefore, since the relay proposed in the present disclosure does not need to keep the coil assembly powered on all the time in the closed state, even if the overstroke is made larger (which means the power consumption is increased), since the excitation signal is only transient, the transient large power consumption will not have a great impact on the client. Figure 8 the process of moving the convex part 311 relative to the return groove 321 from the position S3 to the position S4 as shown, the moving iron core 221 can retreat over the stroke, and the overstroke can be made larger to compensate for the fall of the movable rotor 320. Therefore, since the relay proposed in the present disclosure does not need to keep the coil assembly powered on all the time in the closed state, even if the overstroke is made larger (which means the power consumption is increased), since the excitation signal is only transient, the transient large power consumption will not have a great impact on the client. Figure 8 and Figure 10 the process of moving the convex part 311 relative to the return groove 321 from the position S3 to the position S4 as shown, the moving iron core 221 can retreat over the stroke, and the overstroke can be made larger to compensate for the fall of the movable rotor 320. Therefore, since the relay proposed in the present disclosure does not need to keep the coil assembly powered on all the time in the closed state, even if the overstroke is made larger (which means the power consumption is increased), since the excitation signal is only transient, the transient large power consumption will not have a great impact on the client.

[0073] as Figure 8 and Figure 9As shown, based on the design that the active rotor 320 is provided with a return groove 321 and the return groove 321 includes four groove portions, in an embodiment of the present disclosure, the side groove wall of the first groove portion 3211 away from the third groove portion 3213 can extend along the first direction X, and the side groove wall of the first groove portion 3211 close to the third groove portion 3213 can extend obliquely relative to the first direction X, so that the width of the end of the first groove portion 3211 away from the coil assembly is greater than the width of the other end thereof. Through the above design, during the process of "when the coil assembly is excited for the first time, the active rotor 320 rises away from the coil assembly along with the pushing structure", since the width of the end of the first groove portion 3211 away from the coil assembly is greater than the width of the other end thereof, and at this time the movement of the active rotor 320 away from the coil assembly is equivalent to the convex portion 311 moving relative to the fixed sleeve 310 towards the coil assembly in the first groove portion 3211, therefore, the present disclosure utilizes this structure of the first groove portion 3211 to provide a guiding function for the convex portion 311 moving relatively therein, so that it can enter the first groove portion 3211 more stably and move to the second groove portion 3212 via the first groove portion 3211, which is beneficial to improving the accuracy and stability of the relative movement of the convex portion 311 in the first groove portion 3211.

[0074] As Figure 8 and <� Figure 9 As shown, based on the design that the active rotor 320 is provided with a return groove 321 and the return groove 321 includes four groove portions, in an embodiment of the present disclosure, the side groove wall of the third groove portion 3213 away from the first groove portion 3211 can extend along the first direction X, and the side groove wall of the third groove portion 3213 close to the first groove portion 3211 can extend obliquely relative to the first direction X, so that the width of the end of the third groove portion 3213 away from the coil assembly is less than the width of the other end thereof. Through the above design, during the process of "when the coil assembly is de-excited again, the active rotor 320 drops and the convex portion 311 passes through the third groove portion 3213 and the fourth groove portion 3214 in sequence and returns to the end of the first groove portion 3211 away from the coil assembly", since the width of the end of the third groove portion 3213 away from the coil assembly is less than the width of the other end thereof, and at this time the movement of the active rotor 320 towards the coil assembly is equivalent to the convex portion 311 moving relative to the fixed sleeve 310 away from the coil assembly in the third groove portion 3213, therefore, the present disclosure utilizes this structure of the third groove portion 3213 to provide a guiding function for the convex portion 311 moving relatively therein, so that it can enter the third groove portion 3213 more stably and move to the fourth groove portion 3214 via the first groove portion 3211, which is beneficial to improving the accuracy and stability of the relative movement of the convex portion 311 in the third groove portion 3213.

[0075] As Figure 8 and Figure 12As shown, based on the design that the movable rotor 320 is provided with the return groove 321 including four groove portions, in an embodiment of the present disclosure, the first groove portion 3211 away from the one end of the coil assembly can be opened at the end surface of the movable rotor 320 facing away from the magnetic circuit portion. Through the above design, when the fixed sleeve 310 and the movable rotor 320 are assembled, the convex portion 311 can be moved into the return groove 321 through the above opening of the first groove portion 3211, avoiding the assembly difficulty that the convex portion 311 needs to be moved into the return groove 321 when the return groove 321 is not provided with the opening, and facilitating to improve the assembly convenience.

[0076] As shown, Figures 3 to 5 , based on the design that the first groove portion 3211 away from the one end of the coil assembly is opened at the end surface of the movable rotor 320, in an embodiment of the present disclosure, the movable contact assembly 110 is arranged on a seat body 510 through the elastic member 520, and the one end of the pushing structure is connected to the seat body 510. The seat body 510 can move with the pushing structure and drive the movable contact assembly 110 to move. On this basis, the seat body 510 can be pressed at the opening of the first groove portion 3211 away from the one end of the coil assembly. Through the above design, the present disclosure can block the above opening of the first groove portion 3211 by using the seat body 510, avoid the convex portion 311 from moving out of the opening due to the relative movement of the first groove portion 3211, and ensure the assembly stability of the convex portion 311 and the return groove 321.

[0077] As shown, Figures 3 to 5 , the seat body 510 is connected to a limiting frame 530, and the limiting frame 530 and the seat body 510 are assembled to form a limiting space. The movable contact assembly 110 is partially located in the limiting space, so as to limit the movable contact assembly 110 in the first direction X, avoiding the movable contact assembly 110 from moving too much away from the base (coil assembly) by being pushed by the elastic member 520. Furthermore, by selecting a suitable elastic member 520, the side of the movable contact assembly 110 away from the coil assembly in the initial state (i.e. when the movable contact assembly 110 is not in contact with the static contact assembly 120) can abut against the limiting frame 530, realizing the pre-tightening assembly of the movable contact assembly 110 by using the elastic member 520.

[0078] As shown, Figures 8 to 10 , Figure 12As shown, the movable rotor 320 is provided with a back-shaped slot 321 including four slot portions, and in an embodiment of the present disclosure, the second slot portion 3212 close to the side slot wall of the coil assembly can be provided with a first limiting recess 32121. Accordingly, when the protrusion 311 is located in the first limiting recess 32121, the first limiting recess 32121 can limit the rotation of the movable rotor 320. Moreover, the second slot portion 3212 away from the side slot wall of the coil assembly can be provided with a second limiting recess 32122. Accordingly, when the coil assembly is not energized and the movable contact assembly 110 is in contact with the stationary contact assembly 120, the protrusion 311 is located in the second limiting recess 32122 to limit the rotation of the movable rotor 320. Specifically, when the coil assembly is energized for the first time, the protrusion 311 moves from the position S1 to the position S2 along the first slot portion 3211, and then moves from the position S2 to the position S3, wherein the movable contact assembly 110 and the stationary contact assembly 120 are in contact when the protrusion 311 moves to a position between the position S1 and the position S2, and thereafter, the protrusion 311 continues to move to the position S2 and the position S3, which corresponds to the movement process of the overtravel of the movable contact assembly 110. That is, when the protrusion 311 is located in the first limiting recess 32121, the movable contact assembly 110 is in contact with the stationary contact assembly 120 and in the overtravel state. After the first energization is removed, the movable contact assembly 110 falls back to the overtravel and the protrusion 311 moves from the position S3 to the position S4. Through the above design, the present disclosure limits the protrusion 311 by the first limiting recess 32121, so that the movable rotor 320 cannot rotate relative to the fixed sleeve 310 under certain conditions and cannot move in the first direction X. At the same time, the present disclosure realizes the functions of energization retention and re-energization release of the coil assembly by the second limiting recess 32122, avoiding the problem of impact mis-disconnection of the movable contact assembly 110.

[0079] As Figure 8 and Figure 9As shown, based on the design that the second slot portion 3212 is provided with the first limiting recess 32121, in an embodiment of the present disclosure, the side slot wall of the second slot portion 3212 close to the coil assembly can include two first inclined surfaces 32123 arranged along the circumference of the movable rotor 320, the first inclined surfaces 32123 are inclined close to the coil assembly in the direction from the first slot portion 3211 to the second slot portion 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 slot portion 3211 to the second slot portion 3212, and 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, the first limiting recess 32121 is constituted by the first inclined surfaces 32123 and the reverse inclined surface 32124, and thus the rotation of the movable rotor 320 is limited when the coil assembly is first excited and the movable contact assembly 110 contacts the stationary contact assembly 120.

[0080] As shown in Figure 8 and Figure 9 As shown, based on the design that the second slot portion 3212 is provided with the second limiting recess 32122, in an embodiment of the present disclosure, the side slot wall of the second slot portion 3212 away from the coil assembly can include two second inclined surfaces 32125 connected along the circumference of the movable rotor 320, and the ends of the two second inclined surfaces 32125 away from the coil assembly are connected to each other so that the two second inclined surfaces 32125 together form the second limiting recess 32122. On this basis, the first limiting recess 32121 and one of the two second inclined surfaces 32125 close to the first slot portion 3211 are oppositely arranged in the first direction X. Through the above design, the second limiting recess 32122 is constituted by the two second inclined surfaces 32125, and thus the rotation of the movable rotor 320 is limited when the coil assembly is not excited and the movable contact assembly 110 contacts the stationary contact assembly 120. Further, since the first limiting recess 32121 and the one second inclined surface 32125 close to the first slot portion 3211 are oppositely arranged, when the convex portion 311 is located in the first limiting recess 32121 and the coil assembly is first de-excited, the movable rotor 320 moves towards the coil assembly (for example, falls down due to its own gravity and the gravity of the movable contact assembly 110, the base, etc.), that is, the convex portion 311 moves away from the coil assembly relative to the movable rotor 320, at this time, it can be ensured that the convex portion 311 moves to the second inclined surface 32125 close to the first slot portion 3211 and then moves to the second limiting recess 32122 through the second inclined surface 32125, thereby realizing accurate guidance and limiting of the convex portion 311 and ensuring realization of the excitation retention function.

[0081] As shown in Figure 8 and Figure 9As shown, based on the design that the active rotor 320 is provided with a meandering groove 321 and the meandering groove 321 includes four groove portions, in an embodiment of the present disclosure, along the first direction X, the end of the first groove portion 3211 away from the coil assembly can be farther away from the coil assembly than the end of the second groove portion 3212 away from the coil assembly, so that the fourth groove portion 3214 extends obliquely. Through the above design, when the excitation of the coil assembly is withdrawn again, the active rotor 320 moves towards the coil assembly (for example, it falls due to its own gravity and the gravity of the dynamic contact assembly 110, the base, etc.), that is, the convex portion 311 moves relative to the active rotor 320 away from the coil assembly. Specifically, it moves from the end of the third groove portion 3213 close to the coil assembly to the end of the third groove portion 3213 away from the coil assembly. Due to the above-mentioned obliquely extending design of the fourth groove portion 3214, the present disclosure can enable the convex portion 311 to continue to automatically move along the fourth groove portion 3214 to the end where it is connected to the first groove portion 3211 when it moves relative to the active rotor 320 to the end of the third groove portion 3213 away from the coil assembly, so as to automatically and quickly return to the starting position of the next round of switch action (that is, the end of the first groove portion 3211 away from the coil assembly, that is, the connection position between the first groove portion 3211 and the fourth groove portion 3214).

[0082] As Figure 11 and Figure 12 shown, based on the design that the active rotor 320 is provided with a meandering groove 321, in an embodiment of the present disclosure, at least two meandering grooves 321 can be provided on the outer periphery of the active rotor 320, for example but not limited to the three meandering grooves 321 shown in the drawings. Among them, at least two meandering grooves 321 are arranged at intervals along the circumferential direction of the active rotor 320. Correspondingly, at least two convex portions 311 can be provided on the cavity wall of the cavity of the fixed sleeve 310, for example but not limited to the three convex portions 311 shown in the drawings, that is, the number of the convex portions 311 (that is, the sleeve) is equal to the number of the meandering grooves 321, and the convex portions 311 and the meandering grooves 321 are arranged in one-to-one correspondence. Through the above design, the present disclosure can utilize the cooperative design of at least two groups of meandering grooves 321 and convex portions 311 to enable the active rotor 320 and the fixed sleeve 310 to obtain a more uniform guiding and limiting function during the relative movement process, and further improve the accuracy and stability of the relay switch action. Moreover, since the dynamic contact assembly 110 is supported by the active rotor 320, and the convex portion 311 and the meandering groove 321 are in line contact, accordingly, if only two groups of meandering grooves 321 are arranged, there may be a flipping situation. Therefore, arranging more than three groups of meandering grooves 321 can provide a more stable supporting effect and avoid the flipping situation. At the same time, considering that the more the number of meandering grooves 321, the higher the requirement for the machining error of the matching dimensions of each part, the present disclosure designs the meandering grooves 321 as three groups, which can take into account the above design purposes of supporting stability and reducing machining requirements.

[0083] As Figure 2 、 Figure 4 and Figure 5As shown, in an embodiment of the present 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. The support sleeve 232 is located on the side of the holding assembly facing away from the moving contact assembly 110, and the material of the support sleeve 232 is metal. Accordingly, when the pushing rod 231 moves towards the static contact assembly 120, the end of the support sleeve 232 facing the movable rotor 320 can push the movable rotor 320 towards the static contact assembly 120 to move.

[0084] As Figure 7 shown, based on the design that the pushing structure includes a pushing rod 231 and a support sleeve 232, in an embodiment of the present disclosure, when the coil assembly is not excited and the moving contact assembly 110 is separated from the static contact assembly 120, that is, when the convex portion 311 is located at the end of the first groove portion 3211 away from the coil assembly (that is, the convex portion 311 is located at Figure 8 and Figure 10 the position S1 shown), there may be a gap G between the end of the support sleeve 232 facing the holding assembly and the movable member. Through the above design, when the moving iron core 221 drives the pushing rod 231 to move upward in the present disclosure, it first moves a stroke corresponding to the gap G and then contacts the movable rotor 320. At this time, since the moving iron core 221 drives the pushing rod 231 to move upward a stroke ahead of the movable rotor 320, other components (such as the above-mentioned base) pressed on the movable rotor 320 in the initial state have also moved upward a stroke relative to the movable rotor 320. Then the movable rotor 320 will contact the support sleeve 232 and be driven to move upward and rotate. And the above situation is that the movable rotor 320 moves following the movement after completing an idle stroke corresponding to the gap G, that is, "the movable member can move with the pushing structure". At this time, the movable rotor 320 can avoid friction and interference with the above-mentioned other components during the rotation process, thereby further ensuring the smoothness of the movable rotor 32o during rotation.

[0085] Based on the design that the movable member includes a movable rotor 320, in an embodiment of the present disclosure, the material of the movable rotor 320 may be plastic, and the movable rotor 320 may be manufactured by an injection molding process so that the track is integrally formed on the outer periphery of the movable rotor 320. Through the above design, the present disclosure can simplify the manufacturing process of the movable rotor 320, which is beneficial to integrally form the return groove 321 on the movable rotor 320 at one time, achieving a high production efficiency. In addition, compared with metal materials, plastic has lower material costs and weights, and there is no need to consider insulation problems.

[0086] Participate Figure 15 , Figure 15FIG. 0 shows a partial cross-sectional view of a relay embodying the principles of the present disclosure in another exemplary embodiment.

[0087] As Figure 15 shown, in another embodiment of the present disclosure, still taking the driving structure including the driving rod 231 and the support sleeve 232 as an example, on this basis, the material of the movable rotor 320 can be plastic, and a spacer 330 can be provided at one end of the movable rotor 320 facing the support sleeve 232. The material of the spacer 330 is metal, and the movable rotor 320 contacts the support sleeve 232 via the spacer 330. Through the above design, when the material of the movable rotor 320 is plastic and the material of the support sleeve 232 is metal, if the support sleeve 232 directly contacts the movable rotor 320, when the movable rotor 320 rotates, there will be a problem of scraping debris due to the rotational friction between the movable rotor 320 and the support sleeve 232, and the debris will fall into the coil assembly and cause adverse effects. At the same time, the above rotational friction will also cause rotational jamming. The present disclosure uses the metal material spacer 330 to replace the movable rotor 320 and contact the support sleeve 232, changing the contact between plastic and metal to the contact between metal and metal, fundamentally solving the problem of plastic scraping and chipping, and making the relative rotation between the movable rotor 320 and the support sleeve 323 smoother.

[0088] As Figures 1 to 5 shown, in an embodiment of the present disclosure, the magnetic circuit part further includes a yoke iron assembly. The yoke iron assembly includes a yoke iron plate 410, and the yoke iron plate 410 is located between the coil assembly and the contact part. On this basis, the fixed part can be provided on the side of the yoke iron plate 410 facing away from the coil assembly . In addition, the yoke iron assembly further includes a U-shaped yoke iron 420, and both ends of the yoke iron plate 410 are respectively connected to the two ends of the U-shaped yoke iron 420. Accordingly, the yoke iron plate 410 and the U-shaped yoke iron 420 are assembled to enclose a space for accommodating the coil assembly.

[0089] As Figure 1 and Figure 2As shown, in an implementation of the present disclosure, the moving contact assembly 110 and the stationary contact assembly 120 are arranged along the first direction X, and the pushing structure can move along the first direction X. The relay proposed in the present disclosure may include two stationary contact assemblies 120, and these two stationary contact assemblies 120 are arranged along the second direction Y perpendicular to the first direction X. At the same time, both end portions of the moving contact assembly 110 in the second direction Y are contact end portions, and the two contact end portions of the moving contact assembly 110 can be respectively electrically connected or separated from the two stationary contact assemblies 120. Among them, when the moving contact assembly 110 includes a moving contact piece and a moving contact provided on the moving contact piece, the above-mentioned contact end portions can be understood as the moving contacts, or can also be understood as the overall of the moving contacts and the part of the moving contact piece for setting the moving contacts. In addition, the moving contact piece and the moving contact can be an integral structure, or can be two relatively independent components (for example, fixed together by welding, riveting, etc.), and are not limited in the applications of various possible implementation manners that conform to the design concept of the present disclosure. On this basis, the relay proposed in the present disclosure may further include a short-circuit prevention component, and the short-circuit prevention component includes a first magnetic conductor 610, and the first magnetic conductor 610 is located on the side of the moving contact assembly 110 facing the stationary contact assembly 120. Specifically, the first magnetic conductor 610 can be arranged on the ceramic cover 700, that is, the first magnetic conductor 610 is a fixed structure (the first magnetic conductor 610 does not move with the push rod 231). Accordingly, the present disclosure can provide a strong supporting force for the fixed first magnetic conductor 610. When a short-circuit current (for example, 30KA, exceeding the predetermined value of 20KA) occurs, the present disclosure can prevent the short-circuit prevention 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, so that the electro-dynamic repulsive force directly repels the entire moving assembly downward. In other implementation manners, the first magnetic conductor 610 can also adopt a follow-up design, that is, the first magnetic conductor 610 can move with the push rod 3321. For example, the first magnetic conductor 610 can be arranged on the side of the limit frame 530 facing the stationary contact assembly 120, so as to provide sufficient supporting force to prevent the moving assembly from falling due to insufficient holding force.

[0090] As Figure 2 shown, based on the design that the relay includes a short-circuit prevention component, in an implementation of the present disclosure, the short-circuit prevention component may further include a second magnetic conductor 620, and the second magnetic conductor 620 can be arranged in the limit frame 530 and can move with the push rod 321.

[0091] It should be noted here that the relays shown in the drawings and described in this specification are only a few examples of the many relays that can adopt the principles of the present disclosure. It should be clearly understood that the principles of the present disclosure are by no means limited to any details or any components of the relays shown in the drawings or described in this specification.

[0092] In summary, the relay provided by the present disclosure comprises a contact part, a pushing structure and a retaining assembly; the contact part comprises a moving contact assembly 110 and a static contact assembly 120; the pushing structure can drive the moving contact assembly 110 to move, so as to make the moving contact assembly 110 conduct with or separate from the static contact assembly 120; the retaining assembly comprises a fixed component and a movable component; the movable component can move with the pushing structure, and the surface of the movable component is provided with a track; the fixed component is arranged opposite to the static contact assembly 120, and the fixed component is provided with a convex part 311; the convex part can generate relative movement along the track with the movable component, and make the movable component rotate circumferentially; when the convex part 311 moves to a preset position of the track, the movable component can carry the moving contact assembly 110, so as to make the moving contact assembly 110 keep conducting with the static contact assembly 120. Through the above design, the present disclosure can realize the functions of energizing retention and re-energizing release of the coil assembly by using the retaining assembly, so as to avoid the problem of impact mis-disconnection of the moving contact assembly 110. Moreover, the present disclosure has simple structure, does not need to sacrifice the driving suction force, has less influence on other components, and is suitable for upgrading and transformation of existing products. Furthermore, the relay provided by the present disclosure only needs to energize, retain and release by using the coil assembly, and the magnetic retention effect can be realized by cooperation of the mechanical structure between the convex part 311 and the track, compared with the prior art, the present disclosure does not need to use a magnetic steel to realize the magnetic retention.

[0093] The exemplary embodiments of the relay provided by the present disclosure are described and / or illustrated above in detail. However, the embodiments of the present disclosure are not limited to the specific embodiments described herein, but rather the components and / or steps of each embodiment can be used independently and separately from other components and / or steps described herein. Each component and / or step of one embodiment can also be used in combination with other components and / or steps of other embodiments. The language that is used in the description should not be used to limit any claim. By way of illustration, features from one example embodiment described can be combined with those of other example embodiments unless specifically stated otherwise, even though that feature or example embodiment is not explicitly described in combination with other features or example embodiments.

[0094] Although the relay provided by the present disclosure has been described in accordance with various specific embodiments, one skilled in the art will recognize that modifications can be made to the embodiments of the present disclosure without departing from the spirit and scope of the claims.

Claims

1. A relay characterized by comprising: The relay comprises: a contact part comprising a moving contact assembly (110) and a stationary contact assembly (120); a pushing structure capable of driving the moving contact assembly (110) to move so as to make the moving contact assembly (110) conduct with or separate from the stationary contact assembly (120); a retaining assembly comprising a fixed component and a movable component; the movable component is capable of moving with the pushing structure, and a surface of the movable component is provided with a track; the fixed component is arranged opposite to the stationary contact assembly (120) in a fixed manner, and the fixed component is provided with a convex part (311); wherein the convex part (311) is capable of generating relative movement along the track with the movable component and making the movable component rotate circumferentially, and when the convex part (311) moves to a preset position of the track, the convex part (311) is capable of making the movable component carry the moving contact assembly (110) so as to keep the moving contact assembly (110) conducting with the stationary contact assembly (120).

2. The relay according to claim 1, characterized in that The convex part (311) is provided with a rolling element (312) capable of rotating relative to the convex part (311) so as to make the convex part (311) roll in contact with the track via the rolling element (312).

3. The relay of claim 1, wherein The moving contact assembly (110) and the stationary contact assembly (120) are arranged along a first direction (X), and the pushing structure is capable of moving along the first direction (X); the relay further comprises a magnetic circuit part comprising a coil assembly arranged on a side of the moving contact assembly (110) away from the stationary contact assembly (120); one end of the pushing structure is arranged in the coil assembly, and the other end of the pushing structure is connected to the moving contact assembly (110); the magnetic circuit part is capable of driving the pushing structure when the coil assembly is energized; the retaining assembly is arranged between the moving contact assembly (110) and the magnetic circuit part, and the pushing structure passes through the retaining assembly.

4. The relay according to claim 3, characterized in that The fixed component comprises a fixed sleeve (310) fixed to the magnetic circuit part, and the fixed sleeve (310) is provided with a sleeve cavity penetrating along the first direction (X), and the convex part (311) is arranged on a cavity wall of the sleeve cavity; the movable component comprises a movable rotor (320) arranged in the sleeve cavity, and an outer periphery of the movable rotor (320) is provided with the track, and the movable rotor (320) is capable of rotating circumferentially when moving relative to the fixed sleeve (310) along the first direction (X).

5. The relay of claim 4, wherein The outer periphery of the movable rotor (320) is provided with a return groove (321) defining the track, the return groove (321) comprises a first groove portion (3211), a second groove portion (3212), a third groove portion (3213) and a fourth groove portion (3214), the first groove portion (3211) and the third groove portion (3213) are arranged along the circumference of the movable rotor (320) and respectively extend along the first direction (X), the second groove portion (3212) is communicated between the end of the first groove portion (3211) close to the coil assembly and the end of the third groove portion (3213) close to the coil assembly, and the fourth groove portion (3214) is communicated between the end of the first groove portion (3211) away from the coil assembly and the end of the third groove portion (3213) away from the coil assembly; when the movable contact assembly (110) is separated from the static contact assembly (120) and the coil assembly is not energized, the protrusion (311) is located at one end of the first groove portion (3211) away from the magnetic circuit portion; when the coil assembly is energized for the first time, the movable rotor (320) rises with the pushing structure away from the coil assembly, so that the protrusion (311) moves to the second groove portion (3212); when the coil assembly is de-energized, the movable rotor (320) falls until the protrusion (311) abuts against the side wall of the second groove portion (3212) away from the coil assembly, the protrusion (311) carries the movable rotor (320), so that the movable rotor (320) carries the movable contact assembly (110) and makes the movable contact assembly (110) maintain conduction with the static contact assembly (120); when the coil assembly is energized again, the movable rotor (320) rises with the pushing structure away from the coil assembly, so that the protrusion (311) moves to one end of the third groove portion (3213) close to the coil assembly; when the coil assembly is de-energized again, the movable rotor (320) falls so that the protrusion (311) passes through the third groove portion (3213) and the fourth groove portion (3214) in sequence and returns to one end of the first groove portion (3211) away from the coil assembly.

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

7. The relay of claim 5, wherein The first groove portion (3211) is open at one end away from the coil assembly at the end surface of the movable rotor (320) facing away from the magnetic circuit portion.

8. The relay according to claim 7, characterized in that The movable contact assembly (110) is arranged on a seat body (510) via an elastic member (520), one end of the pushing structure is connected to the seat body (510), the seat body (510) can move with the pushing structure and drive the movable contact assembly (110) to move; wherein the seat body (510) is pressed at the opening of the first groove portion (3211) away from one end of the coil assembly.

9. The relay of claim 5, wherein, The second groove portion (3212) is provided with a first limiting recess (32121) on one side groove wall close to the coil assembly; wherein when the convex portion (311) is located in the first limiting recess (32121), the first limiting recess (32121) can limit the rotation of the movable rotor (320); the second groove portion (3212) is provided with a second limiting recess (32122) on one side groove wall away from the coil assembly; wherein when the coil assembly is not excited and the movable contact assembly (110) is in contact with the static contact assembly (120), the convex portion (311) is located in the second limiting recess (32122) to limit the rotation of the movable rotor (320).

10. The relay according to claim 9, characterized in that: The second groove portion (3212) includes two first inclined surfaces arranged along the circumference of the movable rotor (320) close to the coil assembly, the first inclined surfaces are inclined away from the coil assembly in the direction from the first groove portion (3211) to the second groove portion (3212), and a reverse inclined surface is connected between the two first inclined surfaces, the reverse inclined surface is inclined toward the coil assembly in the direction from the first groove portion (3211) to the second groove portion (3212), and 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 portion (3212) includes two second inclined surfaces connected along the circumference of the movable rotor (320) away from the coil assembly, and the end portions of the two second inclined surfaces away from the coil assembly are connected to each other, so that the two second inclined surfaces together form the second limiting recess (32122); wherein the first limiting recess (32121) and one of the two second inclined surfaces close to the first groove portion (3211) are arranged opposite to each other in the first direction (X).

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

12. The relay of claim 5, wherein The outer periphery of the movable rotor (320) is provided with at least two return grooves (321), and the at least two return grooves (321) are arranged at intervals along the circumference of the movable rotor (320). The cavity wall of the sleeve cavity of the fixed sleeve (310) is provided with at least two protrusions (311), and the protrusions (311) are arranged one by one corresponding to the return grooves (321).

13. The relay of claim 4, wherein, The material of the movable rotor (320) is plastic, and the movable rotor (320) is manufactured by injection molding process, so that the track is integrally formed on the outer periphery of the movable rotor (320).

14. The relay of claim 13, wherein, The pushing structure includes a pushing rod (231) and a supporting sleeve (232); the pushing rod (231) passes through the movable rotor (320), one end of which is connected to the movable contact assembly (110); the supporting sleeve (232) is sleeved on the outer periphery of the pushing rod (231) and located on the side of the retaining assembly away from the movable contact assembly (110), and the material of the supporting sleeve (232) is metal; when the pushing rod (231) moves towards the static contact assembly (120), one end of the supporting sleeve (232) facing the movable rotor (320) can push the movable rotor (320) to move towards the static contact assembly (120); wherein one end of the movable rotor (320) facing the supporting sleeve (232) is provided with a spacer (330), and the material of the spacer (330) is metal, and the movable rotor (320) is in contact with the supporting sleeve (232) through the spacer (330).

15. The relay of claim 4, wherein, The pushing structure includes a pushing rod (231) and a supporting sleeve (232); the pushing rod (231) passes through the movable rotor (320), one end of which is connected to the movable contact assembly (110); the supporting sleeve (232) is sleeved on the outer periphery of the pushing rod (231) and located on the side of the retaining assembly away from the movable contact assembly (110), and the material of the supporting sleeve (232) is metal; when the pushing rod (231) moves towards the static contact assembly (120), one end of the supporting sleeve (232) facing the movable rotor (320) can push the movable rotor (320) to move towards the static contact assembly (120); wherein one end of the movable rotor (320) facing the supporting sleeve (232) is provided with a spacer (330), and the material of the spacer (330) is metal, and the movable rotor (320) is in contact with the supporting sleeve (232) through the spacer (330).

16. The relay of claim 15, wherein, The coil assembly is not energized and the movable contact assembly (110) is separated from the static contact assembly (120), and there is a gap (G) between one end of the supporting sleeve (232) facing the retaining assembly and the movable part.

17. The relay of claim 1, wherein The relay further comprises a magnetic circuit part, the magnetic circuit part comprising a coil assembly and a yoke assembly, the yoke assembly comprising a yoke plate, the yoke plate being located between the coil assembly and the contact part; wherein the fixed part is arranged on the side of the yoke plate away from the coil assembly.

18. The relay of claim 1, wherein, The moving contact assembly (110) and the stationary contact assembly (120) are arranged along a first direction (X) along which the pushing structure can move; the relay comprises two stationary contact assemblies (120) arranged along a second direction (Y) perpendicular to the first direction (X); two ends of the moving contact assembly (110) in the second direction (Y) are respectively contact ends, and the two contact ends of the moving contact assembly (110) are respectively in conduction or separation with the two stationary contact assemblies (120); the relay further comprises an anti-short-circuit assembly, and the anti-short-circuit assembly comprises a first magnetic conductor (610) located on a side of the moving contact assembly (110) facing the stationary contact assembly (120).

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