relay

Abstract

The utility model discloses a relay, include: magnetic circuit system, including framework, set up on the coil of framework, core, yoke and armature, magnetic circuit structure is installed in the framework, is used for and armature closes or disconnects, and magnetic circuit structure can form first magnetic circuit with yoke, armature, and can form second magnetic circuit with yoke, core, wherein, magnetic circuit structure and core between have gap, or magnetic circuit structure and core between be equipped with non -magnetic piece, to close after armature and magnetic circuit structure and power -off when coil, armature can and magnetic circuit structure keep as closed state. The utility model discloses a relay, through setting up magnetic circuit structure on the framework, can form first magnetic circuit with armature, yoke respectively, and the magnetic energy of this first magnetic circuit is greater than the magnetic energy of second magnetic circuit that magnetic circuit structure forms with yoke, core respectively, to when coil power -off, armature still can be in closed state.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, and in particular to a relay. Background Technology

[0002] A relay is an automatic switching element that uses electromagnetic force to drive the relative movement of mechanical parts to produce a predetermined response. It generally consists of a base, a top shell, a magnetic circuit, and contact parts. The magnetic circuit includes a coil, coil frame, iron core, yoke, and armature. The contact parts include a moving spring and a stationary spring. When current flows through the coil, an electromagnetic force is generated, attracting the armature and causing the moving contact of the moving spring to make or break contact with the stationary contact of the stationary spring. When the current in the coil disappears, the electromagnetic force disappears, the armature returns to its original position, and the moving contact of the moving spring breaks or makes contact with the stationary contact of the stationary spring. Thus, by closing or opening the moving contact and the stationary contact, the circuit is made or broken.

[0003] However, in the existing technology, the coil terminal of the relay needs to be energized at all times when it is working. On the one hand, it consumes electrical energy, and on the other hand, the coil generates heat, which affects the temperature rise and electrical life of the relay. Utility Model Content

[0004] The purpose of this invention is to disclose a relay that solves the problem of high energy consumption caused by the coil needing to be energized after the armature is closed in the prior art.

[0005] To achieve the above objectives, this utility model discloses a relay, comprising:

[0006] A magnetic circuit system includes a frame, a coil disposed on the frame, an iron core, a yoke, and an armature;

[0007] A magnetic circuit structure is installed on the frame and is used to close or open with the armature. The magnetic circuit structure can form a first magnetic circuit with the yoke and the armature, and can form a second magnetic circuit with the yoke and the iron core.

[0008] Wherein, there is a gap between the magnetic circuit structure and the iron core, or a non-magnetic component is provided between the magnetic circuit structure and the iron core, so that when the armature and the magnetic circuit structure are closed and the coil is de-energized, the armature and the magnetic circuit structure can remain in a closed state.

[0009] As an optional implementation method,

[0010] The magnetic circuit structure includes at least one magnet and at least one magnetic conductor, and one magnet and one magnetic conductor are arranged alternately in sequence;

[0011] The magnet is positioned close to the yoke, and one of the magnetic conductors is located at the end of the iron core and has a gap with the iron core, or the non-magnetic component is provided on one side facing the iron core for closing or opening with the armature;

[0012] or,

[0013] The magnetic conductor is positioned close to the yoke, with one of the magnets located at the end of the iron core and having a gap with the iron core, or the non-magnetic component is provided on one side facing the iron core for closing or opening with the armature.

[0014] As an optional implementation, there is a gap between the ends of the magnet and the iron core, or between the magnetic conductor and the ends of the iron core; the width of the gap ranges from 0.1 to 0.4 mm.

[0015] As an optional implementation, the skeleton is provided with a positioning structure, and the magnet and the magnetic conductor are disposed within the positioning structure.

[0016] As an optional implementation, the positioning structure includes at least a first mounting component, the first mounting component having a first slot, and the magnet and / or the magnetic conductor being engaged in the first slot.

[0017] As an optional implementation, the first mounting assembly includes a crossbeam and two longitudinal frames connected to both ends of the crossbeam, the frame, the crossbeam and the two longitudinal frames forming the first slot.

[0018] As an optional implementation, the magnet and part of the magnetic conductor are secured in the first slot.

[0019] As an optional implementation, the positioning structure further includes two opposing second mounting components, with a second slot formed between the two second mounting components and the frame, the magnetic conductor disposed in the second slot, and each of the second mounting components and the first mounting component having a gap.

[0020] As an optional implementation, the magnetic circuit structure is provided with a protrusion for closing with the armature.

[0021] As an optional implementation, the magnetic circuit structure has a groove on the side facing the iron core.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] The relay of this utility model has a magnetic circuit structure set on the base, which can form a first magnetic circuit with the yoke and armature respectively, and a second magnetic circuit with the yoke and iron core respectively. Since there is a gap between the magnetic circuit structure and the iron core, or a non-magnetic component is provided between the magnetic circuit structure and the iron core, the magnetic resistance of the first magnetic circuit formed by the magnetic circuit structure with the yoke and armature is less than the magnetic resistance of the second magnetic circuit formed by the magnetic circuit structure with the yoke and iron core respectively. So that the armature can still be in a closed state after the coil is de-energized, thereby not only reducing energy loss, but also avoiding the overheating caused by the coil being in a energized state for a long time, thus ensuring the service life of the entire relay. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram showing the relationship between the current flowing through the armature and the torque change of the armature when the armature is in the off state according to an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram showing the relationship between the current flowing through the armature and the torque change of the armature when the armature is in the closed state according to an embodiment of the present invention.

[0027] Figure 3 This is a three-dimensional schematic diagram of the relay from one perspective of an embodiment of the present utility model;

[0028] Figure 4 yes Figure 3 A three-dimensional diagram of the relay from another perspective;

[0029] Figure 5 yes Figure 3 A cross-sectional schematic diagram of an embodiment of the relay in the diagram;

[0030] Figure 6 yes Figure 3 A schematic diagram of the skeleton structure in the image;

[0031] Figure 7 yes Figure 3 A schematic diagram of the two magnetic circuits of the relay in the diagram;

[0032] Figure 8 yes Figure 3 A cross-sectional schematic diagram of another embodiment of the relay in the diagram;

[0033] Figure 9 yes Figure 3A cross-sectional schematic diagram of another embodiment of the relay in the diagram.

[0034] Explanation of key figure labels:

[0035] 100-Relay, 10-Magnetic circuit system, 11-Frame, 111-First slot, 112-Second slot, 114-First mounting assembly, 1141-Horizontal frame, 1142-Longitudinal frame, 115-Second mounting assembly, 1151-Longitudinal block, 1152-Transverse block, 12-Coil, 13-Iron core, 14-Yoke, 15-Armature, 20-Magnetic circuit structure, 21-Magnet, 22-Magnetic conductor, 221-Protrusion, 222-Groove, 30-Reset spring, 40-Motion system, 41-Moving contact group, 411-Moving spring, 412-Moving contact, 42-Static contact group, 421-Static spring, 422-Static contact, 50-Non-magnetic component, 60-Positioning structure, 200-First magnetic circuit, 300-Second magnetic circuit. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0038] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0039] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0040] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0041] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0042] Example 1

[0043] Please see Figures 1 to 9 The first embodiment of this utility model provides a relay 100, which includes a magnetic circuit system 10 and a magnetic circuit structure 20.

[0044] The magnetic circuit system 10 includes a frame 11, a coil 12 disposed on the frame 11, an iron core 13, a yoke 14, and an armature 15. The magnetic circuit structure 20 is mounted on the frame 11 and is used to close or open with the armature 15. The magnetic circuit structure 20 can form a first magnetic circuit 200 with the yoke 14 and the armature 15, and can form a second magnetic circuit 300 with the yoke 14 and the iron core 13. There is a gap between the magnetic circuit structure 20 and the iron core 13, or a non-magnetic component 50 is provided between the magnetic circuit structure 20 and the iron core 13, so that when the armature 15 and the magnetic circuit structure 20 are closed and the coil 12 is de-energized, the armature 15 can remain in a closed state with the magnetic circuit structure 20.

[0045] The aforementioned relay 100, by providing a magnetic circuit structure 20 on the base, allows the magnetic circuit structure 20 to form a first magnetic circuit 200 with the yoke 14 and armature 15, and a second magnetic circuit 300 with the yoke 14 and core 13. Because there is a gap between the magnetic circuit structure 20 and the core 13, or a non-magnetic component 50 is provided between them, the magnetic resistance of the first magnetic circuit 200 formed by the magnetic circuit structure 20 with the yoke 14 and armature 15 is less than the magnetic resistance of the second magnetic circuit 300 formed by the magnetic circuit structure 20 with the yoke 14 and core 13. This ensures that the armature 15 remains closed even after the coil 12 is de-energized, thereby reducing energy loss and preventing overheating caused by the coil 12 being energized for extended periods, thus guaranteeing the service life of the entire relay 100.

[0046] It should be noted that you should refer to [link / reference]. Figure 4 and Figure 5 The relay 100 in this embodiment also includes a reset spring 30 and a motion system 40. The two ends of the reset spring 30 are respectively abutted against, directly connected to, or indirectly connected to the yoke 14 and the armature 15. After the armature 15 is closed relative to the magnetic circuit structure 20, the reset spring 30 undergoes elastic deformation due to the rotation of the armature 15, thereby applying a reset elastic force to the armature 15. The motion system 40 includes a moving contact group 41 and a stationary contact group 42 that can be closed or opened. The moving contact group 41 is connected to the armature 15, and the stationary contact group 42 is mounted on the frame 11. When the armature 15 rotates relative to the yoke 14, it drives the moving contact group 41 mounted on itself to move, thereby achieving the closing or opening of the stationary contact group 42.

[0047] Specifically, the moving contact group 41 includes a moving spring 411 and a moving contact 412 disposed on the moving spring 411, and the stationary contact group 42 includes a stationary spring 421 and a stationary contact 422 disposed on the stationary spring 421. The moving contact 412 is used to close or open with the stationary contact 422.

[0048] When the moving contact 412 and the stationary contact 422 are closed, the moving spring 411 will undergo an elastic deformation and have a first elastic force F1, and the reset spring 30 will also undergo an elastic deformation and have a second elastic force F2. At this time, the armature 15 has a torque F3 under the closure of the magnetic circuit structure 20.

[0049] In this embodiment, one type of relay is used as an example. The values ​​of F1, F2, and F3 listed in this embodiment correspond to the structure of the relay in this application. In other embodiments, different values ​​of F1, F2, and F3 are set according to different relay models.

[0050] Please see Figure 1 and 2 This is a coordinate diagram showing how the torque of armature 15 changes with the current in coil 12. The horizontal axis represents the magnitude of the forward or reverse current applied to coil 12, in ampere-turns, and the vertical axis represents the magnitude of the torque of armature 15, in nmm or nm. Figure 1 This is a schematic diagram illustrating the change in torque when current flows through the armature 15 in the off state. Figure 2 This is a schematic diagram showing the change in torque after the armature 15 is de-energized while in the closed state.

[0051] Please refer to Figure 1When the armature 15 is in the open state, only the reset spring 30 has a pulling force F3 on the armature 15, and the maximum value of the pulling force F3 is 30 nm (i.e. 0.03 nm). As the coil 12 is supplied with a positive current, the attraction torque of the magnetic circuit structure 20 on the armature 15 increases with the increase of the current, and the current value supplied is usually at least 365A. When the torque is greater than 30 nm, the armature 15 and the magnetic circuit structure 20 can be closed.

[0052] When the armature 15 is in the closed state, both the reset spring 30 and the moving spring 411 are in an elastic deformation state, and their positions remain unchanged. The reset spring 30 has an elastic tension F1, and the reaction force of the moving spring 411 is F2. F1 + F2 ≈ 0.2nm. As the positive current flowing through the coil 12 gradually increases, the torque F3 of the armature 15 gradually increases. When the ampere-turns are 365A, F3 is approximately 0.75nm. 0.75nm > 0.2nm. Therefore, the armature 15 can maintain a stable closed state. When the armature 15 is closed and the coil 12 is de-energized (i.e., the ampere-turns = 0), the magnetic resistance of the first magnetic circuit 200 formed by the magnetic circuit structure 20, the yoke 14, and the armature 15 is less than the magnetic resistance of the second magnetic circuit 300 formed by the magnetic circuit structure 20, the yoke 14, and the iron core 13. At this time, the torque F3 of the armature 15 is approximately 0.4 nm, and 0.4 nm is greater than 0.2 nm. Therefore, the armature 15 can be in a stable closed state.

[0053] It should be noted that you should refer to [link / reference]. Figure 8 A non-magnetic component 50 may also be provided between the magnetic conductive structure 20 and the iron core 13, such as an insulating material like plastic or a weakly magnetic material like copper or aluminum, so that after the armature 15 and the magnetic conductive structure 20 are closed, the magnetic resistance of the first magnetic circuit 200 formed by the magnetic circuit structure 20 and the yoke 14 and the armature 15 is less than the magnetic resistance of the second magnetic circuit 300 formed by the magnetic circuit structure 20 and the yoke 14 and the iron core 13.

[0054] In one embodiment of this utility model, the magnetic circuit structure 20 includes at least one magnet 21 and at least one magnetic conductor 22; the magnet 21 is disposed near the yoke 14, and one of the magnetic conductors 22 is located at the end of the iron core 13 and has a gap with the iron core 13, or a non-magnetic element 50 is provided on the side facing the iron core 13 for closing or opening with the armature 15; or, the magnetic conductor 22 is disposed near the yoke 14, the magnet 21 is located at the end of the iron core 13 and has a gap with the iron core 13, or a non-magnetic element 50 is provided on the side facing the iron core 13 for closing or opening with the armature 15. In this way, a magnetic field is generated by the magnet 21 and transmitted through the magnetic conductor 22, ensuring the amount of magnetic field transmission, so as to form a first magnetic circuit 200 with the armature 15 and the yoke 14 respectively, and a second magnetic circuit 300 with the iron core 13 and the yoke 14 respectively. Figure 7 As shown.

[0055] When setting up the magnet 21 and the magnetic conductor 22, each can be used to close with the armature 15. The magnetic conductor 22 can be made of iron or an alloy such as iron-cobalt-nickel.

[0056] In one embodiment of this utility model, since the magnet 21 is more brittle than the magnetic conductor 22, the armature 15 needs to be repeatedly closed or opened with the magnetic circuit structure 20. Therefore, in this embodiment, the magnetic conductor 22 is set at the end of the iron core 13 to be closed with the armature 15, so as to ensure the service life of the entire relay 100.

[0057] Please see Figures 3 to 5 In one embodiment, a schematic diagram of a magnetically conductive structure 20 is provided. The magnetically conductive structure 20 includes a magnet 21 and a magnetic conductor 22 arranged side by side, thereby facilitating installation on the frame 11 by providing a magnet 21 and a magnetic conductor 22.

[0058] Please see Figure 9 In another embodiment, multiple magnets 21 and multiple magnetic conductors 22 can be provided, with one magnet 21 and one magnetic conductor 22 alternately arranged sequentially to achieve the effect of magnetic field transmission. Specifically, one magnet 21 and two magnetic conductors 22 are provided, with the magnet 21 sandwiched between the two magnetic conductors 22. By providing one magnet 21 and two magnetic conductors 22, the size of the magnet 21 and the magnetic conductors 22 is small, which facilitates their respective molding.

[0059] Specifically, when a gap is set between the magnetic circuit structure 20 and the iron core 13, the width of the gap between the magnetic conductor 22 and the iron core 13 is 0.1-0.4 mm (this width refers to the width of the distance between the magnetic circuit structure 20 and the iron core 13). Since there is a gap of 0.01-0.05 mm between the armature 15 and the magnetic conductor 22 when they are closed, setting the gap between the magnetic conductor 22 and the iron core 13 to be greater than 0.01-0.05 mm ensures that the magnetic resistance of the second magnetic circuit 300 is greater than that of the first magnetic circuit 200 when the armature 15 and the magnetic conductor 22 are closed. This ensures that the armature 15 and the magnetic conductor 22 are in a closed state when the coil 12 is de-energized. At the same time, the gap is not too large. If the gap is too large, the magnetic energy will flow towards the first magnetic circuit 200, affecting the closure of the armature 15 and the iron core 13.

[0060] In some embodiments, the gap value can be set to 0.1mm, 0.2mm, 0.3mm or 0.4mm, etc., and is not limited thereto.

[0061] Specifically, please refer to Figures 3 to 5 Since the side where the armature 15 and the magnetic circuit structure 20 are closed has a large coverage area, in order to ensure that the armature 15 and the magnetic circuit structure 20 can close quickly, the magnetic circuit structure 20 is provided with a protrusion 221. The protrusion 221 is used to close with the armature 15. Specifically, the magnetic conductor 22 is provided with a protrusion 221. Since the protrusion 221 has a small cross-sectional area, when the armature 15 and the magnetic conductor 22 are closed, they can quickly contact the protrusion 221, thereby ensuring the stability of the closure.

[0062] Further, please refer to Figure 5 In order to facilitate the molding of the magnetic circuit structure 20 and reduce the amount of material used, the magnetic circuit structure 20 is provided with a groove 222 on the side facing the iron core 13. Specifically, the magnetic conductor 22 is provided with a groove 222 on the side facing the iron core 13. By setting the groove 222, the thickness of the magnetic conductor 22 is reduced, which not only facilitates the molding of the magnetic conductor 22, but also reduces the amount of material used for molding.

[0063] Please see Figures 4 to 6 In one embodiment of this utility model, when installing the magnetic conductor 22 and the magnet 21, the frame 11 is provided with a positioning structure 60, and the magnet 21 and the magnetic conductor 22 are disposed in the positioning structure 60. Thus, the magnetic conductor 22 and the magnet 21 are respectively installed through the positioning structure 60. For example, grooves are provided on the frame 11, and the magnet 21 and the magnetic conductor 22 are respectively disposed in the corresponding grooves to achieve positioning; or multiple positioning blocks extend from the frame 11, and the positioning blocks surround to form a positioning space for the magnet 21 and / or the magnetic conductor 22, thereby achieving the positioning effect of the magnet 21 and / or the magnetic conductor 22.

[0064] Furthermore, based on the positioning structure 60, a colloid can be coated on the magnetic conductor 22 and the magnet 21 to increase the connection stability with the skeleton 11.

[0065] Specifically, the positioning structure 60 of this embodiment includes at least a first mounting component 114. The first mounting component 114 is provided with a first slot 111. The magnet 21 and / or the magnetic conductor 22 are engaged in the first slot 111 so as to realize the positioning and installation of the magnet 21 and / or the magnetic conductor 22 by setting the first slot 111.

[0066] Specifically, in this embodiment, when installing the magnet 21 and the magnetic conductor 22, the magnet 21 and part of the magnetic conductor 22 are engaged in the first slot 111, so that the magnet 21 and the magnetic conductor 22 are positioned and installed simultaneously through the first slot 111. After the magnet 21 is installed in the first slot 111, it is restricted by the first mounting component 114 to prevent it from detaching from the frame 11. At the same time, after the magnet 21 is installed in the first slot 111, the magnet 21 can fit against the yoke 14 due to the attraction between the magnet 21 and the yoke 14. Meanwhile, since the first mounting component 114 is provided on the frame 11, the structural strength of the main body 113 can be guaranteed.

[0067] Specifically, please refer to Figure 6 The first mounting component 114 in this embodiment includes a crossbeam 1141 and two longitudinal frames 1142 connected to both ends of the crossbeam 1141. The main body 113, the crossbeam 1141 and the two longitudinal frames 1142 surround to form a first slot 111, thereby forming an opening between the crossbeam 1141 and the main body 113. The magnet 21 is pushed in along the opening formed between the crossbeam 1141 and the main body 113. Under the guidance of the crossbeam 1141 and the attraction between the magnet 21 and the yoke 14, the magnet 21 moves towards the yoke 14 and fits against the yoke 14, thereby installing the armature 15 in the first slot 111.

[0068] Please see Figure 6In one embodiment of the present invention, the positioning structure 60 further includes two opposing second mounting components 115. When a second slot 112 is formed between the two second mounting components 115 and the frame 11, each second mounting component 115 and the first mounting component 114 are spaced apart. Through the setting of the space, the protrusion 221 on the magnetic conductor 22 can extend into the space, thereby closing with the armature 15. By setting two second mounting components 115, since there is a space between the two second mounting components 115, the weight of the entire frame 11 can be reduced, and the installation of the magnetic conductor 22 on the frame 11 can be realized.

[0069] Furthermore, in order to ensure the stability of the installation of the magnetic conductor 22, part of the magnetic conductor 22 is housed in the first slot 111 and part of the magnetic conductor 22 is located in the second slot 112. Thus, the magnetic conductor 22 is not only restricted by the slot wall of the first slot 111, but also by the slot wall of the second slot 112, so as to ensure the stability of the installation of the magnetic conductor 22 on the frame 11.

[0070] Specifically, the second mounting component 115 in this embodiment includes a longitudinal locking block 1151 and a transverse locking block 1152. The longitudinal locking block 1151 is connected to the main body 113, and the transverse locking block 1152 is arranged in a manner that is approximately parallel to the main body 113. When the magnetic conductor 22 is installed, it is gradually inserted into the first locking slot 111 along the interval between the transverse locking block 1152 and the main body 113, and is also partially inserted into the second locking slot 112.

[0071] In this embodiment, the first magnetic circuit 200 formed by the magnetic conductor 22, the magnet 21, the yoke, and the armature, and the second magnetic circuit 300 formed by the magnetic conductor 22, the magnet 21, the yoke, and the iron core, respectively, are as follows: Figure 7 As shown.

[0072] The aforementioned relay 100, by setting a magnetic conductor 22 and a magnet 21 on the base, generates a magnetic field through the magnet 21, and transmits the magnetic field through the magnetic conductor 22. The magnetic conductor 22 and the magnet 21 form a first magnetic circuit 200 with the yoke 14 and the armature 15, respectively. The magnetic conductor 22 and the magnet 21 form a second magnetic circuit 300 with the yoke 14 and the iron core 13, respectively. When the coil 12 is de-energized, because the magnetic resistance of the second magnetic circuit 300 is greater than that of the first magnetic circuit 200, and the torque of the armature 15 is greater than the total pulling force of the reset spring 30 and the moving spring 411, the armature 15 can maintain a stable closed state with the magnetic conductor 22. Since the coil 12 is in a de-energized state, energy saving can be achieved, heat generation can be reduced, and the service life of the relay 100 can be guaranteed.

[0073] The present invention has provided a detailed description of a relay according to its embodiments. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the embodiments above is only for the purpose of helping to understand the relay of the present invention and its core idea. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A relay, characterized in that, include: A magnetic circuit system includes a frame, a coil disposed on the frame, an iron core, a yoke, and an armature; A magnetic circuit structure is installed on the frame and is used to close or open with the armature. The magnetic circuit structure can form a first magnetic circuit with the yoke and the armature, and can form a second magnetic circuit with the yoke and the iron core. Wherein, there is a gap between the magnetic circuit structure and the iron core, or a non-magnetic component is provided between the magnetic circuit structure and the iron core, so that when the armature and the magnetic circuit structure are closed and the coil is de-energized, the armature and the magnetic circuit structure can remain in a closed state.

2. The relay according to claim 1, characterized in that, include: The magnetic circuit structure includes at least one magnet and at least one magnetic conductor, and one magnet and one magnetic conductor are arranged alternately in sequence; The magnet is positioned close to the yoke, and one of the magnetic conductors is located at the end of the iron core and has a gap with the iron core, or the non-magnetic component is provided on one side facing the iron core for closing or opening with the armature; or, The magnetic conductor is positioned close to the yoke, with one of the magnets located at the end of the iron core and having a gap with the iron core, or the non-magnetic component is provided on one side facing the iron core for closing or opening with the armature.

3. The relay according to claim 2, characterized in that, There is a gap between the ends of the magnet and the iron core, or between the magnetic conductor and the ends of the iron core; The width of the gap ranges from 0.1 to 0.4 mm.

4. The relay according to claim 2 or 3, characterized in that, The frame is provided with a positioning structure, and the magnet and the magnetic conductor are located within the positioning structure.

5. The relay according to claim 4, characterized in that, The positioning structure includes at least a first mounting component, the first mounting component having a first slot, and the magnet and / or the magnetic conductor being engaged in the first slot.

6. The relay according to claim 5, characterized in that, The first mounting assembly includes a crossbeam and two longitudinal frames connected to both ends of the crossbeam, and the frame, the crossbeam, and the two longitudinal frames surround to form the first slot.

7. The relay according to claim 5 or 6, characterized in that, The magnet and part of the magnetic conductor are secured in the first slot.

8. The relay according to claim 5 or 6, characterized in that, include: The positioning structure further includes two opposing second mounting components, with a second slot formed between the two second mounting components and the frame. The magnetic conductor is disposed in the second slot, and each second mounting component and the first mounting component are spaced apart.

9. The relay according to claim 1, characterized in that, include: The magnetic circuit structure is provided with a protrusion, which is used to close with the armature.

10. The relay according to claim 1, characterized in that, include: The magnetic circuit structure has a groove on the side facing the iron core.

Images