Relay

Abstract

The utility model relates to the technical field of electronic control devices, in particular to a relay, which comprises a magnetic circuit part, a swing connecting piece and a contact part, the contact part comprises a movable contact piece and a static contact piece; the magnetic circuit part comprises a coil assembly and an armature assembly, the coil assembly comprises a coil main body, and the coil main body drives the armature assembly to switch and rotate around a first axis through magnetic force; the swing connecting piece is provided with a first end and a second end, and the part, located between the first end and the second end, of the swing connecting piece is suitable for rotating around a second axis; the vertical distance between the first end and the second axis is smaller than that between the second end and the second axis; and the swing connecting piece is configured to rotate in a manner that the first end is poked by the armature assembly, and the second end drives the movable contact piece to move to a closing position or an opening position during rotation, so that the small rotation stroke of the armature assembly can be amplified and converted, and the large-stroke design of breaking and closing of the movable contact piece and the static contact piece is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic control devices, in particular to a relay. Background Art

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is usually used in automatic control circuits. A relay is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] As the application scope of relays continues to expand, relays are gradually developing towards high load and miniaturization. Among them, the demand for high load requires that relays should have a large contact gap.

[0004] In the existing related technologies, if the relay wants to increase the contact gap travel, for example, in order to comply with the new standard of the State Grid smart IoT meter that the disconnection distance between the moving and static contacts must be greater than 5.5mm, then it is necessary to increase the magnetic field strength of the magnetic circuit part and increase the power consumption. In particular, the magnetic circuit part composed of the armature assembly also needs to increase the rotation angle of the armature assembly exponentially. This will cause the magnetic spacing between the armature assembly and the coil assembly to increase, and make it more difficult to attract. In order to ensure that the armature assembly can still be attracted normally when the magnetic spacing increases, it is also necessary to increase the magnetic force of the coil of the magnetic circuit part and the magnetic force of the magnet in the armature assembly. This will increase the volume of the coil of the magnetic circuit part and the volume of the armature assembly, and is not conducive to achieving miniaturized design. Utility Model Content

[0005] The embodiment of the utility model provides a relay, which increases the contact gap while ensuring the miniaturization of the magnetic circuit part.

[0006] The relay provided by the embodiment of the utility model comprises a magnetic circuit part, a swing connection part and a contact part;

[0007] The contact part includes a moving contact piece and a static contact piece;

[0008] The magnetic circuit part includes a coil assembly and an armature assembly, the coil assembly includes a coil body, and the coil body drives the armature assembly to switch and rotate around a first axis through magnetic force;

[0009] The swing connection member has a first end and a second end, and a portion of the swing connection member located between the first end and the second end is suitable for rotating around a second axis; a vertical distance between the first end and the second axis is smaller than a vertical distance between the second end and the second axis; the swing connection member is configured to rotate by receiving the armature assembly being pushed by the first end, and the second end drives the movable contact member to move to a closed position or an open position during the rotation;

[0010] In the closed position, the moving contact is in contact with the static contact; in the open position, the moving contact is separated from the static contact.

[0011] According to some embodiments of the present invention, the second axis is parallel to the first axis.

[0012] According to some embodiments of the utility model, the moving contact has an extension direction, and moving contacts are respectively provided at both ends along the extension direction; the number of the static contacts is two, and both of the two static contacts are provided with static contacts; the two static contacts respectively correspond to the two moving contacts.

[0013] According to some embodiments of the present invention, in the disconnected position, the sum of the gaps between the two moving contacts and their corresponding static contacts is at least 5.5 mm.

[0014] According to some embodiments of the present invention, the number of the movable contacts is at least two, and the movable contacts are arranged in a direction perpendicular to the extending direction of the movable contacts and are connected in parallel.

[0015] According to some embodiments of the utility model, the axis of the coil body is parallel to the movement direction of the moving contact; the extension direction of the moving contact is perpendicular to the axis of the coil body and the first axis; the moving contact and the magnetic circuit portion are arranged along the extension direction of the moving contact.

[0016] According to some embodiments of the utility model, it also includes a pushing member; the moving contact member is installed and follows the pushing member; the second end can drive the pushing member to reciprocate in a direction parallel to the axial direction of the coil body, so that the moving contact member switches between the closed position and the open position.

[0017] According to some embodiments of the utility model, one of the pushing member and the swing connecting member is provided with a toggle groove, and the other is provided with a toggle portion cooperating with the toggle groove; the toggle groove has a first limiting portion and a second limiting portion arranged at intervals along the movement direction of the moving contact member; when the swing connecting member swings back and forth, the toggle portion respectively abuts against the first limiting portion and the second limiting portion.

[0018] According to some embodiments of the utility model, when the movable contact moves to the closed position, the toggle portion abuts against the first limiting portion to form a first abutment position; when the movable contact moves to the open position, the toggle portion abuts against the second limiting portion to form a second abutment position; the first abutment position and the second abutment position are located on the same straight line parallel to the axial direction of the coil body.

[0019] According to some embodiments of the utility model, a swing arm is provided on the side of the armature assembly away from the coil body, the swing arm is provided with a receiving groove, and the first end of the swing connecting member is located in the receiving groove; along the axial direction of the coil body, the receiving groove has a first groove wall and a second groove wall, and the distance between the first groove wall and the second groove wall is greater than the maximum width of the first end during the rotation process relative to the receiving groove.

[0020] According to some embodiments of the present invention, when the groove wall of the accommodating groove pushes against the first end, it is in point contact or line contact with the first end.

[0021] According to some embodiments of the present invention, along the axial direction of the coil body, the swing arm is located on a side of the first axis away from the static contact piece.

[0022] According to some embodiments of the present utility model, the armature assembly includes a first armature and a second armature, the first armature is located on a side of the second armature away from the coil body; the two ends of the coil body are respectively provided with a first yoke and a second yoke, the first yoke is located at one end of the coil body away from the static contact, and the second yoke is located at the other end of the coil body;

[0023] Along the axial direction of the coil body, the first axis is centrally disposed between an end of the first yoke for mating with the armature assembly and an end of the second yoke for mating with the armature assembly, and the first axis is closer to a side where the static contact is located than the second axis;

[0024] The stroke of the first armature and the second armature rotating toward the first yoke is equal to the stroke of the first armature and the second armature moving toward the second yoke respectively; along the depth direction of the accommodating groove, the height of the first groove wall is greater than the height of the second groove wall.

[0025] According to some embodiments of the present utility model, the armature assembly includes a first armature and a second armature, the first armature is located on a side of the second armature away from the coil body; the two ends of the coil body are respectively provided with a first yoke and a second yoke, the first yoke is located at one end of the coil body away from the static contact, and the second yoke is located at the other end of the coil body;

[0026] Along the axial direction of the coil body, the first axis is located between an end of the first yoke for mating with the armature assembly and an end of the second yoke for mating with the armature assembly, on a side closer to the first yoke, and the first axis and the second axis are located at the same height position;

[0027] The strokes of the first armature and the second armature respectively rotating toward the first yoke are smaller than the strokes of the first armature and the second armature respectively rotating toward the second yoke.

[0028] According to some embodiments of the utility model, the swing connecting member includes a first connecting segment and a second connecting segment, and a second rotating shaft fixedly connected between the first connecting segment and the second connecting segment; the free end of the first connecting segment is the first end of the swing connecting member, the free end of the second connecting segment is the second end of the swing connecting member, and the axis of the second rotating shaft is the second axis.

[0029] According to some embodiments of the present invention, the first connecting section, the second connecting section and the second rotating shaft are integrally formed.

[0030] According to some embodiments of the utility model, which also includes a base for accommodating the contact part, the magnetic circuit part and the swing connection part, the armature assembly is provided with a first rotating shaft, the first rotating shaft is rotatably connected to the base, and the central axis of the first rotating shaft is the first axis.

[0031] One embodiment of the above utility model has at least the following advantages or beneficial effects:

[0032] 1. The relay provided by the embodiment of the utility model is provided with a swinging connecting piece, and the vertical distance between the first end of the swinging connecting piece and the second axis is smaller than the vertical distance between the second end and the second axis. In this way, the lever amplification principle can be used to control the length ratio of the vertical distance between the first end and the second axis and the vertical distance between the second end and the second axis to control a certain stroke amplification ratio, so as to amplify and convert the small rotation stroke of the armature assembly, thereby realizing a large stroke design in which the moving contact is disconnected and closed relative to the static contact without increasing the rotation angle of the armature assembly, thereby realizing a large contact gap to meet the high load requirements in existing relay application scenarios; since the rotation angle of the armature assembly does not need to be increased, the magnetic spacing between the armature assembly and the coil assembly does not need to be set very large, so there is no need to increase the magnetic force of the coil in the magnetic circuit part and the magnetic force of the magnetic steel in the armature assembly, thereby helping to ensure the miniaturization of the volume of the magnetic circuit part.

[0033] 2. The second axis is parallel to the first axis, which not only ensures that the extension direction of the swing connector does not occupy space in the axial direction of the first rotating shaft, further facilitating the realization of miniaturized design, but also facilitates the processing of the first axial hole and the second axial hole on the base, and also facilitates the assembly of the swing connector. During the rotation of the swing connector, it can also be smoother and smoother, and the end of the swing connector will not be worn due to the tilt of the swing connector.

[0034] 3. The swing connector is arranged on the left side of the magnetic circuit part and in the space above the contact part, which can make full use of the internal space of the relay. At the same time, the swing arm is set to an eccentric structure, so that the swing connector can move in the space above, and then can drive the moving contact to move to the side farther away from the static contact, further realizing a large gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 What is shown is a three-dimensional structural schematic diagram of a relay provided in an embodiment of the utility model;

[0036] Figure 2 What is shown is a schematic diagram of a three-dimensional exploded structure of a relay provided in an embodiment of the utility model;

[0037] Figure 3 What is shown is a schematic diagram of the internal structure of a relay provided by an embodiment of the utility model;

[0038] Figure 4 Shown is a schematic diagram of a moving contact in a relay provided by an embodiment of the utility model in a closed position;

[0039] Figure 5 It shows Figure 4 A partial enlarged view of point Ⅰ in the middle;

[0040] Figure 6 Shown is a schematic diagram of a moving contact in a relay provided by an embodiment of the utility model being in a disconnected position;

[0041] Figure 7 It shows Figure 6 A partial enlarged view of the middle II;

[0042] Figure 8 Shown is a cross-sectional view of a relay provided by an embodiment of the utility model;

[0043] Fig. 9 It shows Figure 8 A partial enlarged view of the middle part III;

[0044] Fig.10 What is shown is a structural schematic diagram of another relay provided by an embodiment of the utility model (the moving contact is in a closed position);

[0045] Fig.11 Shown is a structural schematic diagram of another relay provided by an embodiment of the utility model (the moving contact is in the disconnected position);

[0046] Fig.12 It shows Fig.11 A schematic diagram of the structure of the armature assembly in the relay shown;

[0047] Fig.13 The figure shows a schematic diagram of the structure of a third relay provided by an embodiment of the utility model (the moving contact is in a closed position);

[0048] Fig.14 It shows Fig.13 A partial enlarged view of the middle IV;

[0049] Fig.15 What is shown is a schematic diagram of the structure of a base in a relay provided in an embodiment of the utility model;

[0050] Fig.16 It shows Fig.14 A schematic diagram of the structure of the armature assembly in the relay shown;

[0051] Fig.17 It shows Fig.16 A top view of the armature assembly is shown;

[0052] Fig.18 What is shown is a schematic diagram of the structure of the first armature in the relay provided by the embodiment of the utility model;

[0053] Fig.19 What is shown is a schematic diagram of the structure of a swing connector in a relay provided by an embodiment of the utility model;

[0054] Fig. 20 The diagram shows a schematic diagram of the switching state of the armature assembly in the relay provided by the embodiment of the utility model between the first station and the second station;

[0055] Fig.21 What is shown is a schematic diagram of the structure of the magnetic circuit part provided by an embodiment of the utility model (the moving contact is in a closed position);

[0056] Fig. 22 What is shown is a schematic diagram of the structure of the magnetic circuit part provided by an embodiment of the utility model (the moving contact is in the disconnected position);

[0057] Fig.23 It shows a schematic diagram of the structure of the moving contact, the pushing member, the first elastic member and the second elastic member in the relay provided by the embodiment of the utility model;

[0058] Fig.24 The figure shows a longitudinal cross-sectional view of the moving contact, the pushing member, the first elastic member and the second elastic member in the relay provided by the embodiment of the utility model;

[0059] Fig.25 The figure shows a schematic diagram of the structure in which the moving contact and the first elastic member in the relay provided by the embodiment of the utility model cooperate with each other;

[0060] Fig.26 Shown is a front view of a second elastic member in a relay provided by an embodiment of the utility model;

[0061] Fig. 27 What is shown is a schematic diagram of the structure of the second elastic member in the relay provided by the embodiment of the utility model;

[0062] Fig.28 It is shown that Fig.13 A schematic structural diagram of a first elastic member in a relay is shown.

[0063] Marking: 1-contact part; 11-moving contact; 111-moving contact point; 12-static contact; 121-static contact; 13-electrical connection end; 2-magnetic circuit part; 21-coil assembly; 211-coil body; 212-first yoke; 213-second yoke; 22-armature assembly; 221-fixing member; 2211-first rotating shaft; 222-first armature; 2221-recess; 223-second armature; 225-swing arm; 2251-first slot wall; 2252-second slot wall; 3-base; 30a-first limiting surface; 30b-second limiting surface; 31-first shaft hole; 32-second shaft hole; 33-first limiting column; 34-second limiting column; 35-protrusion; 36-first gear Wall; 37-first boss; 4-swing connection member; 41-first connecting section; 411-first columnar portion; 42-second connecting section; 421-second columnar portion; 43-second rotating shaft; 5-pushing member; 50a-third limiting surface; 50b-fourth limiting surface; 51-first limiting portion; 52-second limiting portion; 53-sliding rod; 6-first elastic member; 61-bending portion; 62-adapter; 621-guide hole; 6211-first hole wall; 6212-second hole wall; 63-first fixed portion; 64-first elastic portion; 7-second elastic member; 71-second elastic portion; 711-lateral portion; 712-inclined portion; 72-second fixed portion; 8-micro switch; 9-cover body; 10-fixed frame. DETAILED DESCRIPTION

[0064] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0065] See also Figures 1 to 27 As shown, Figure 1The arrow direction D1 in the figure indicates the height direction of the relay, the arrow direction D2 indicates the length direction of the relay, and the arrow direction D3 indicates the thickness direction of the relay. The arrow directions D1, D2, and D3 are perpendicular to each other, that is, the height direction, length direction, and thickness direction of the relay are perpendicular to each other. In this embodiment, the extending direction of the moving contact 11 is consistent with the length direction of the relay, and the axial direction of the coil body 211 is consistent with the height direction of the relay. The present embodiment provides a relay, comprising a magnetic circuit portion 2, a swing connection member 4 and a contact portion 1; the contact portion 1 comprises a moving contact member 11 and a static contact member 12; the magnetic circuit portion 2 comprises a coil assembly 21 and an armature assembly 22, the coil assembly 21 comprises a coil body 211, and the coil body 211 drives the armature assembly 22 to switch and rotate around a first axis through magnetic force; the swing connection member 4 has a first end and a second end, and the portion of the swing connection member 4 located between the first end and the second end is suitable for rotating around the second axis; the vertical distance between the first end and the second axis is smaller than the vertical distance between the second end and the second axis; the swing connection member 4 is configured to rotate by receiving the armature assembly 22 at the first end, and to drive the moving contact member 11 to move to a closed position or an open position by the second end when rotating; in the closed position, the moving contact member 11 is in contact with the static contact member 12; in the open position, the moving contact member 11 is separated from the static contact member 12.

[0066] The magnetic circuit part 2 provided in this embodiment is provided with a swinging connecting member 4, and the vertical distance between the first end of the swinging connecting member 4 and the second axis is smaller than the vertical distance between the second end and the second axis. In this way, the lever amplification principle can be used to control a certain stroke amplification ratio by controlling the length ratio of the vertical distance between the first end and the second axis and the vertical distance between the second end and the second axis, so as to amplify and convert the small rotation stroke of the armature assembly 22, so as to achieve a large stroke design of disconnection and closing of the moving contact 11 relative to the static contact 12 without increasing the rotation angle of the armature assembly 22, thereby realizing a large contact gap to meet the high load requirements in existing relay application scenarios; since the rotation angle of the armature assembly 22 does not need to be increased, the magnetic spacing between the armature assembly 22 and the coil assembly 21 does not need to be set very large, so there is no need to increase the magnetic force of the coil in the magnetic circuit part 2 and the magnetic force of the magnetic steel in the armature assembly 22, thereby helping to ensure the miniaturization of the volume of the magnetic circuit part 2.

[0067] In one embodiment, the second axis is parallel to the first axis, ensuring that the extension direction of the swing connector 4 does not occupy space in the direction of the first axis, which is further conducive to achieving a miniaturized design.

[0068] In one embodiment, see Figure 1 and Figure 2As shown, the relay further includes a micro switch 8 , which is disposed in the base 3 , and the swing connector 4 can be used to trigger the micro switch 8 .

[0069] In one embodiment, see Figure 2 , Fig.15 and Fig.16 As shown, the relay further includes a base 3 for accommodating the contact portion 1, the magnetic circuit portion 2 and the swing connector 4. The armature assembly 22 is provided with a first rotating shaft 2211, the first rotating shaft 2211 is rotatably connected to the base 3, and the central axis of the first rotating shaft 2211 is the first axis. The first rotating shaft 2211 has a first shaft portion and a second shaft portion, and a first shaft hole 31 is provided on the base 3. The first shaft portion of the first rotating shaft 2211 is inserted into the first shaft hole 31, and the first shaft portion of the first rotating shaft 2211 is inserted into the through hole of the fixing frame 10. The first rotating shaft 2211 swings around its own axis relative to the sleeve to achieve switching between the closed position and the open position.

[0070] In one embodiment, the swing connector 4 includes a first connecting section 41 and a second connecting section 42, and a second rotating shaft 43 fixedly connected between the first connecting section 41 and the second connecting section 42; the free end of the first connecting section 41 is the first end of the swing connector 4, the free end of the second connecting section 42 is the second end of the swing connector 4, and the axis of the second rotating shaft 43 is the second axis.

[0071] See also Figure 4 and Fig.19 As shown, the swing connection member 4 is a lever structure, which includes a first connection section 41, a second connection section 42 and a second rotation shaft 43. The second rotation shaft 43 is located between the first connection section 41 and the second connection section 42. The end of the first connection section 41 away from the second rotation shaft 43 is the first end of the swing connection member 4, and the end of the second connection section 42 away from the second rotation shaft 43 is the second end of the swing connection member 4. Fig.15As shown, the base 3 is provided with a second shaft hole 32, and the second rotating shaft 43 is inserted into the second shaft hole 32. The second rotating shaft 43 can rotate around its own axis relative to the second shaft hole 32, and the axis of the second rotating shaft 43 is the second axis, and the second axis is parallel to the first axis. Since the vertical distance between the first end and the second axis is smaller than the vertical distance between the second end and the second axis, that is, the length of the first connecting section 41 is smaller than the length of the second connecting section 42, the lever amplification principle can be used to control the length ratio of the first connecting section 41 and the second connecting section 42 to control a certain stroke amplification ratio, so as to amplify and convert the small rotation stroke of the armature assembly 22, increase the possibility of realizing a large stroke (not less than 5.5mm) of the breaking and closing of the contact part 1, and further facilitate the realization of a large contact gap between the moving contact 11 and the static contact 12 in a smaller space. In addition, the magnetic gap of the magnetic circuit part 2 and the optimal design of the stroke matching can be controlled to ensure the magnetic efficiency, and the cost and volume can also be controlled in the best solution.

[0072] Exemplarily, the first connecting section 41 , the second connecting section 42 and the second rotating shaft 43 are integrally formed to facilitate production and processing, while also being able to improve the structural strength of the swing connector 4 .

[0073] In one embodiment, the second axis is parallel to the first axis, which not only ensures that the extension direction of the swing connector 4 will not occupy space in the axial direction of the first rotating shaft 2211, further facilitating the realization of miniaturized design, but also facilitates the processing of the first axial hole 31 and the second axial hole 32 on the base 3, and also facilitates the assembly of the swing connector 4. During the rotation of the swing connector 4, it can also be more stable and smooth, and the end of the swing connector 4 will not be worn due to the tilt of the swing connector 4.

[0074] In one embodiment, the moving contact 11 has an extension direction, and moving contacts 111 are respectively provided at both ends along the extension direction; there are two static contacts 12, and both static contacts 12 are provided with static contacts 121; the two static contacts 121 correspond to the two moving contacts 111 respectively.

[0075] The contact part 1 adopts a structure in which two moving contacts 111 are connected in series, which can realize a large gap design. The total gap between the moving contact 111 and the static contact 121 is equal to the sum of the gaps between the two moving contacts 111 and their respective corresponding static contacts 121, thereby reducing the movement stroke and helping to reduce the height dimension of the relay.

[0076] In one embodiment, in the disconnected position, the sum of the gaps between the two moving contacts 111 and their corresponding stationary contacts 121 is at least 5.5 mm.

[0077] In this embodiment, the contact gap between the moving contact 11 and the static contact 12 specifically refers to the sum of the distances between all the moving contacts 111 and their corresponding static contacts 121 when the moving contact 11 and the static contact 12 are in the disconnected state.

[0078] In some embodiments, the number of moving contacts 11 is one, and correspondingly, the number of moving contacts 111 is two. When the moving contact 11 is disconnected from the static contact 12, the gaps between the two moving contacts 111 of the moving contact 11 and the corresponding static contacts 121 are both 3 mm. Then, the total contact gap between the moving contact 11 and the static contact 12 is 6 mm. The moving contact 11 has a smaller movement stroke relative to the static contact 12, but can meet the requirements of the new standard of the State Grid smart IoT meter. Of course, the gap between a moving contact 111 of the moving contact 11 and the corresponding static contact 121 is not limited to 3 mm, and it can be set according to the actual application environment and actual needs.

[0079] After the contact part 1 is closed, a multi-contact parallel structure is formed, which plays a role of shunting. On the one hand, it is beneficial to reduce the temperature rise near the contact. On the other hand, it is also beneficial to reduce the electric repulsion between the moving contact 111 and the static contact 121. In addition, the parallel structure of two adjacent moving contacts 11 can reduce the total contact resistance to meet the performance requirements of the relay.

[0080] In this embodiment, see Fig.23 As shown, the number of moving contacts 11 is two, and accordingly, the number of moving contacts 111 is four in total. There are four groups of moving contacts 111 and static contacts 121 in total. When the four groups of moving contacts 111 and static contacts 121 are subjected to high current and voltage loads, they play the role of voltage division in a series structure and current diversion in a parallel structure, thereby reducing the load on the contacts, improving the performance of the relay, and enhancing the reliability.

[0081] In other embodiments, the number of the moving contacts 11 may be three or more.

[0082] In one embodiment, the number of the movable contacts 11 is at least two, and the movable contacts 11 are arranged in a direction perpendicular to the extending direction of the movable contacts 11 and connected in parallel.

[0083] In one embodiment, the axis of the coil body 211 is parallel to the action direction of the moving contact 11; the extension direction of the moving contact 11 is perpendicular to the axis of the coil body 211 and the first axis, and the moving contact 11 and the magnetic circuit portion 2 are arranged along the extension direction of the moving contact 11. On the one hand, the armature assembly 22 can be arranged on the side close to the moving contact 11, which is easier to drive; on the other hand, the height of the coil assembly 21 is utilized, so that the moving contact 11 in the contact portion 1 has sufficient activity space in its action direction, which is conducive to achieving a large gap between the moving contact 111 and the static contact 121.

[0084] In one embodiment, see Figure 6 and Fig.16 As shown, the armature assembly 22 includes a fixing member 221 and a first armature 222 and a second armature 223 partially enclosed in the fixing member 221; the first yoke 212 and the second yoke 213 are respectively provided at both ends of the coil body 211, the first yoke 212 is located at one end of the coil body 211 away from the static contact member 12, and the second yoke 213 is located at the other end of the coil body 211; specifically, the first yoke 212 is located between the ends of the first armature 222 and the second armature 223 away from the static contact member 12, and the second yoke 213 is located between the ends of the first armature 222 and the second armature 223 close to the static contact member 12; in the closed position, the first armature 222 is attracted to the first yoke 212, and the second armature 223 is attracted to the second yoke 213; in the open position, the first armature 222 is attracted to the second yoke 213, and the second armature 223 is attracted to the first yoke 212.

[0085] In this embodiment, the armature assembly 22 also includes a magnet, which is arranged between the first armature 222 and the second armature 223 and fixed together by a fixing member 221. Exemplarily, the fixing member 221 can be an injection molded part, which covers the first armature 222, the second armature 223 and the magnet to form a whole. Both ends of the first armature 222 and the second armature 223 are located outside the injection molded part to facilitate attraction with the first yoke 212 and the second yoke 213.

[0086] See also Fig.18 As shown, the surfaces of the first armature 222 and the second armature 223 close to each other are both provided with a recessed portion 2221, and the magnetic steel is installed in the space formed between the two opposite recessed portions 2221, which can increase the volume of the magnetic steel in a limited space, enhance the magnetic field strength of the magnetic circuit part 2, improve the holding force performance of the small-volume relay, and ensure the contact reliability of the relay while ensuring that the volume of the magnetic steel remains unchanged, reduce the magnetic spacing between the armature and the yoke, improve the magnetic efficiency, and reduce the reset voltage of the relay, thereby reducing the amount of enameled wire used and reducing production costs.

[0087] See also Figure 2 and Figure 3 As shown, the relay further includes a fixing frame 10, which is fixedly mounted on the base 3 and is provided with a through hole. One end of the first yoke 212 is located between one end of the first armature 222 and one end of the second armature 223, and one end of the second yoke 213 is located between the other ends of the first armature 222 and the second armature 223. When the coil is driven by a forward pulse voltage and a reverse pulse voltage, the switching between the closed position and the open position is achieved through the repulsive force and the attractive force between the armature and the yoke.

[0088] Specifically, see Figure 3 and Figure 4 As shown, in the closed position, one end of the first armature 222 away from the static contact 12 is attracted to the first yoke 212, and the other end of the first armature 222 is separated from the second yoke 213, and one end of the second armature 223 away from the static contact 12 is separated from the first yoke 212, and the other end of the second armature 223 is attracted to the second yoke 213. Figure 6 As shown, in the disconnected position, one end of the first armature 222 away from the static contact 12 is separated from the first yoke 212, and the other end of the first armature 222 is attracted to the second yoke 213, and one end of the second armature 223 away from the static contact 12 is attracted to the first yoke 212, and the other end of the second armature 223 is separated from the second yoke 213.

[0089] In the attracted state, since there is almost no magnetic gap between the first armature 222, the second armature 223 and the first yoke 212 and the second yoke 213, the optimal magnetic efficiency can be guaranteed. Therefore, the coil body 211 and the armature assembly 22 do not need to be set very large, further compressing the external volume of the relay, achieving a smaller volume and more optimized cost.

[0090] In one embodiment, the relay also includes a pusher 5; the moving contact 11 is installed and follows the pusher 5; the second end can drive the pusher 5 to reciprocate in a direction parallel to the axial direction of the coil body 211, so that the moving contact 11 switches between a closed position and an open position.

[0091] Exemplarily, the pusher 5 includes a bracket and a pusher block, both ends of the pusher block are provided with protrusions, the bracket is a U-shaped bracket, the two side walls of the bracket are provided with clamping holes, and the two protrusions are correspondingly clamped in the two clamping holes. The moving contact 11 is installed in the bracket through the U-shaped member, and the bottom plate of the bracket is provided with a long hole for the two side walls of the U-shaped member to extend and be fixed on the bracket.

[0092] In one embodiment, one of the pushing member 5 and the swing connecting member 4 is provided with a toggle groove, and the other is provided with a toggle portion cooperating with the toggle groove; the toggle groove has a first limit portion 51 and a second limit portion 52 arranged at intervals along the movement direction of the moving contact member 11; when the swing connecting member 4 swings back and forth, the toggle portion abuts against the first limit portion 51 and the second limit portion 52 respectively.

[0093] Exemplarily, when the movable contact 11 moves to the closed position, the toggle portion abuts against the first limiting portion 51 to form a first abutment position; when the movable contact 11 moves to the open position, the toggle portion abuts against the second limiting portion 52 to form a second abutment position; the first abutment position and the second abutment position are located on the same straight line parallel to the axial direction of the coil body.

[0094] In this embodiment, see Figure 3 , Figure 4 , Figure 6 and Fig. 20 As shown, the push member 5 is provided with a toggle groove, and the swing connection member 4 is provided with a toggle portion. By controlling the swing connection member 4 to move in a fan-shaped symmetrical manner, it is ensured that the first abutment position and the second abutment position are located on the same straight line parallel to the axial direction of the coil body 211, thereby ensuring the movement stability of the dynamic contact member 11 and reducing the component force generated by the lateral deviation to affect the reliability of the contact part 1.

[0095] In this embodiment, the toggle groove is arranged in the pushing member 5, and the two groove walls of the toggle groove are respectively a first limiting portion 51 and a second limiting portion 52, the first limiting portion 51 is close to the opening of the U-shaped bracket, and the second limiting portion 52 is away from the opening of the U-shaped bracket; the second end of the swing connecting member 4 is located in the toggle groove, and the side of the second end close to the first limiting portion 51 is the first limiting matching portion, and the side of the second end close to the second limiting portion 52 is the second limiting matching portion.

[0096] Exemplarily, the second end is formed into a second columnar portion 421, which serves as a toggle portion and is located in the toggle groove. The portion of the circumferential surface of the second columnar portion 421 close to the first limiting portion 51 is a first limiting mating surface, and the portion of the circumferential surface of the second columnar portion 421 close to the second limiting portion 52 is a second limiting mating surface.

[0097] In other embodiments, a toggle portion may be provided on the pushing block, and a toggle groove may be provided at the second end of the swing connector 4 .

[0098] In one embodiment, a swing arm 225 is provided on the side of the armature assembly 22 away from the coil body 211, and the swing arm 225 is provided with a receiving groove, and the first end of the swing connecting member 4 is located in the receiving groove; along the axial direction of the coil body 211, the receiving groove has a first groove wall 2251 and a second groove wall 2252, and the distance between the first groove wall 2251 and the second groove wall 2252 is greater than the maximum width of the first end during the rotation process relative to the receiving groove.

[0099] See also Figure 4 and Fig.17 As shown, the swing arm 225 is arranged on the surface of the fixing member 221 close to the first armature 222, the swing arm 225 is located on the side of the first axis close to the first yoke 212, the swing arm 225 is provided with a receiving groove, the first end of the swing connecting member 4 is formed as a first columnar portion 411, and the first columnar portion 411 is located in the receiving groove; along the axial direction of the coil body 211, the receiving groove has a first groove wall 2251 and a second groove wall 2252, and the distance between the first groove wall 2251 and the second groove wall 2252 is greater than the maximum width of the first end (i.e., the first columnar portion 411) of the swing connecting member 4 during the relative rotation process of the receiving groove; Example In the process of the armature assembly 22 swinging clockwise around the first axis, the first groove wall 2251 can approach and abut the first end to drive the first end to swing counterclockwise around the axis of the second rotating shaft 43. When the first end abuts the first groove wall 2251, there is a gap between the first end and the second groove wall 2252. In the process of the armature assembly 22 swinging counterclockwise around the first axis, the second groove wall 2252 can approach and abut the first end to drive the first end to swing clockwise around the second rotating shaft 43. When the first end abuts the second groove wall 2252, there is a gap between the first end and the first groove wall 2251. The lateral component of the fan-shaped motion is offset by the idle stroke, thereby reducing the deflection of the swing connection 4.

[0100] Exemplarily, the swing arm 225 and the fixing member 221 are integrally formed. Exemplarily, the swing arm 225 and the fixing member 221 can be integrally formed by injection molding.

[0101] In one embodiment, when the first groove wall 2251 of the receiving groove pushes against the first end, the first groove wall 2251 and the first end are in line contact. Exemplarily, the first columnar portion 411 is a cylindrical structure, and the circumferential surface of the first columnar portion 411 can be tangent to the first groove wall 2251 to form a line contact to reduce friction. The maximum width of the first columnar portion 411 can be the diameter of the first columnar portion 411.

[0102] When the second groove wall 2252 of the accommodating groove pushes against the first end, the second groove wall 2252 and the first end are in line contact.

[0103] Of course, the first groove wall 2251 or the second groove wall 2252 of the accommodating groove may also be in point contact with the first end.

[0104] In one embodiment, along the axial direction of the coil body 211 , the swing arm 225 is located on a side of the first axis away from the static contact 12 .

[0105] In this embodiment, the moving contact 11 and the magnetic circuit portion 2 are arranged along the extension direction of the moving contact 11, and the swing connector 4 is arranged in the overlapping space of the magnetic circuit portion 2 and the contact portion 1 in the length direction and the width direction, which is the most space-saving. In other words, the swing connector 4 is arranged on the left side of the magnetic circuit portion 2 and in the space above the contact portion 1, which can make full use of the internal space of the relay. At this time, the swing arm 225 is set to an eccentric structure, so that the swing connector 4 can move in the space above, and then can drive the moving contact 11 to move to the side farther away from the static contact 12, and further realize a large gap.

[0106] In a possible design, along the axial direction of the coil body 211, the first axis is centrally arranged between the end of the first yoke 212 for mating with the armature assembly 22 and the end of the second yoke 213 for mating with the armature assembly 22, and the first axis is closer to the side where the static contact 12 is located than the second axis; the stroke of the first armature 222 and the second armature 223 rotating toward the first yoke 212 is equal to the stroke of the first armature 222 and the second armature 223 rotating toward the second yoke 213 respectively; along the depth direction of the accommodating groove, the height of the first groove wall 2251 is greater than the height of the second groove wall 2252.

[0107] Since the swing arm 225 is an eccentric structure relative to the first axis, the swing arm 225 will move in a fan-shaped asymmetric motion. Therefore, the swing arm 225 is designed to be differentiated in length. Specifically, along the depth direction of the receiving groove, the height of the first groove wall 2251 is greater than the height of the second groove wall 2252, so that the first end can move in the receiving groove. When the armature assembly 22 is in the closed position, the circumferential surface of the first columnar portion 411 can contact the second groove wall 2252 as much as possible to prevent the first columnar portion 411 from escaping from the receiving groove, thereby driving the second end to move to the first position and ensuring that the first abutting position and the second abutting position are located on the same straight line parallel to the axial direction of the coil body 211, thereby ensuring the movement stability of the moving contact 11 and reducing the component force generated by the lateral deflection that affects the reliability of the contact portion 1. Among them, see Fig.17 As shown, the depth direction of the accommodating groove is consistent with the arrangement direction of the first armature 222 and the second armature 223 .

[0108] In this possible design, the strokes of the first armature 222 and the second armature 223 respectively rotating toward the first yoke 212 are equal to the strokes of the first armature 222 and the second armature 223 respectively rotating toward the second yoke 213. Specifically, when the armature assembly 22 is located in the middle position between the closed position and the open position, the first armature 222 and the second armature 223 are symmetrically arranged on both sides of the center line between the end of the first yoke 212 for the armature assembly 22 to cooperate with and the end of the second yoke 213 for the armature assembly 22 to cooperate with, and the angle between the pole surface of the first armature 222 facing the first yoke 212 and the center line is equal to the angle between the pole surface of the second yoke 213 facing the first yoke 212 and the center line, thereby ensuring that the swing angles of the armature assembly 22 are equal when switching between the closed position and the open position, thereby ensuring the stability of the relay during the disconnection and attraction processes.

[0109] In another possible design, see Figures 10 to 12 As shown, along the axial direction of the coil body 211, the first axis is located between the end of the first yoke 212 for cooperating with the armature assembly 22 and the end of the second yoke 213 for cooperating with the armature assembly 22, and is closer to one side of the first yoke 212, and the first axis and the second axis are located at the same height position; the stroke of the first armature 222 and the second armature 223 respectively rotating toward the first yoke 212 is smaller than the stroke of the first armature 222 and the second armature 223 respectively rotating toward the second yoke 213.

[0110] Specifically, the position of the first rotating shaft 2211 is set away from the center of the armature assembly 22, so that the plane where the axis of the first rotating shaft 2211 and the axis of the second rotating shaft 43 are located is parallel to the extension direction of the movable contact member 11. At the same time, in order to ensure that the swing connecting member 4 moves in a fan-shaped symmetrical manner, and then ensure that the first abutting position and the second abutting position are located on the same straight line parallel to the axial direction of the coil body 211, the first armature 222 and the second armature 223 are arranged asymmetrically, see Fig.10 As shown, the distance d1 between the pole surfaces of the first armature 222 and the second armature 223 toward the first yoke 212 is smaller than the distance d2 between the pole surfaces of the first armature 222 and the second armature 223 toward the second yoke 213. When the armature assembly 22 rotates around the first axis at a set angle, the stroke traveled by one end of the first armature 222 close to the first yoke 212 is smaller than the stroke traveled by the other end of the second armature 223 close to the second yoke 213, so as to ensure that when the moving contact 111 contacts the static contact 121, the first armature 222 can be attracted to the first yoke 212, and at the same time, the second armature 223 can be attracted to the second yoke 213.

[0111] For example, in order to ensure that the first armature 222 is attracted to the first yoke 212 and the second armature 223 is attracted to the second yoke 213, it is necessary to adjust the installation angle of the first armature 222 and the second armature 223 according to the swing angle of the armature assembly 22, and then adjust the angle between the pole surface and the center line of the first armature 222 and the second armature 223.

[0112] It should be noted that, since the movement stroke of the first armature 222 towards the first yoke 212 is different from the movement stroke of the second armature 223 towards the second yoke 213 , fool-proof markings can be made during production and processing to facilitate quick assembly.

[0113] In this another possible design, along the depth direction of the accommodating groove, the height of the first groove wall 2251 is equal to the height of the second groove wall 2252 .

[0114] It should also be noted that a protrusion may be provided on the swing arm 225, and a groove may be provided on the first end of the swing connector 4, the protrusion being located in the groove of the swing connector 4, and the two moving in coordination.

[0115] In this embodiment, see Figure 1 and Figure 2 As shown, the relay further includes a micro switch 8 , which is disposed in the base 3 , and the swing connector 4 can be used to trigger the micro switch 8 .

[0116] In one embodiment, the relay also includes a first elastic member 6, which is fixedly connected to the moving contact 11, and the base 3 has a first limit surface 30a and a second limit surface 30b facing or opposite to each other along the movement direction of the moving contact 11; the first elastic member 6 abuts against the first limit surface 30a and the second limit surface 30b respectively to store energy when the moving contact 11 is in the closed position and the open position, and applies a force suitable for moving away from the static contact 12 and a force suitable for moving toward the static contact 12 to the moving contact 11 respectively.

[0117] In one possible design, see Figure 5 As shown, the base 3 is provided with a first limiting column 33 and a second limiting column 34; the first limiting column 33 and the second limiting column 34 are spaced apart from each other along the movement direction of the movable contact 11, and their facing surfaces respectively constitute a second limiting surface 30b and a first limiting surface 30a.

[0118] In this possible design, see Fig.25As shown, the first elastic member 6 includes a first fixed portion 63 and two first elastic portions 64; the first fixed portion 63 is connected to the moving contact member 11; the two first elastic portions 64 extend out from both ends of the automatic contact member 11 along the extension direction of the moving contact member 11; the base 3 has two groups of first limiting surfaces 30a and second limiting surfaces 30b corresponding to the two first elastic portions 64 respectively.

[0119] Specifically, the number of the first limiting posts 33 and the second limiting posts 34 are both two, the two first limiting posts 33 are arranged opposite to each other along the extension direction of the moving contact 11, and the two second limiting posts 34 are arranged opposite to each other along the extension direction of the moving contact 11. Figure 4 and Figure 5 As shown, when the movable contact 11 is in the closed position, the two second limiting columns 34 abut against their respective corresponding first elastic parts 64 at the same time, so that the first elastic member 6 stores energy and the movable contact 11 has a tendency to move toward the open position. Figure 6 and Figure 7 As shown, when the movable contact 11 is in the open position, the two first limiting columns 33 abut against their respective corresponding first elastic portions 64 at the same time, so that the first elastic member 6 stores energy and the movable contact 11 tends to move toward the closed position.

[0120] See also Figure 2 As shown, the relay also includes a cover body 9, which is fixedly connected to the base 3, and the cover body 9 is provided with a first abutting portion (not shown in the figure); the base 3 is provided with a second abutting portion, a first retaining wall 36 and a second retaining wall; the first abutting portion and the second abutting portion cooperate to abut at least one of the two first elastic portions 64 along a direction perpendicular to the extension direction and the action direction of the moving contact 11; the first retaining wall 36 and the second retaining wall are used to abut against the sides of the two first elastic portions 64 away from each other along the extension direction of the moving contact 11, so that the base 3 limits the range of movement of the first elastic member 6 along the direction parallel to the extension direction of the moving contact 11, thereby reducing the displacement of the moving contact along its extension direction when it moves, and improving the movement stability of the moving contact.

[0121] See also Fig. 9 As shown, the second abutting portion is a first boss 37 arranged in the base 3, and the first abutting portion can be a second boss arranged on the inner surface of the cover body 9. The second boss and the first boss 37 can simultaneously abut against two thickness surfaces of the first elastic portion 64, wherein the thickness surface is the two side surfaces of the first elastic portion 64 along a direction perpendicular to the extension direction and the action direction of the dynamic contact piece 11.

[0122] The first abutting portion and the second abutting portion may be two groups, which abut against two first elastic portions 64 respectively, so as to further improve the movement stability of the dynamic contact member 11 and the pushing member 5 .

[0123] See also Fig.14 As shown, the first retaining wall 36 may be an inner wall of the base 3 , and the second retaining wall may be a protrusion disposed on the base 3 .

[0124] See also Figures 4 to 7 As shown, a bending portion 61 is formed at the end of the first elastic member 6. Specifically, the ends of the two first elastic portions 64 are both provided with a bending portion 61. The outer side surface of the bending portion 61 is suitable for abutting against the first retaining wall 36 or the second retaining wall.

[0125] Exemplarily, the first elastic member 6 is a bent spring structure, with bent portions 61 formed at both ends of the spring structure, and the bending direction of the bent portion 61 is away from the moving contact member 11. The spring structure is perpendicular to the base 3, and the thickness surface of one side of the length direction of the spring structure abuts against the base 3 to ensure that the pusher 5 and the moving contact member 11 can move smoothly.

[0126] In this possible design, the bending portion 61 has an arc-shaped structure. In the closed position, the inner arc surface of the arc-shaped structure matches and abuts against the circumferential surface of the first limiting column 33. In the open position, the outer arc surface of the arc-shaped structure abuts against the inner surface of the side wall of the base 3.

[0127] Of course, a protrusion may also be provided on the side wall of the base 3 , and the protrusion forms the first retaining wall 36 .

[0128] In another possible design, see Fig.13 and Fig.14 As shown, the base 3 is provided with a protrusion 35; the protrusion 35 forms a first limiting surface 30a and a second limiting surface 30b on both sides along the movement direction of the movable contact member 11; the end of the first elastic member 6 is provided with a guide hole 621, and the first elastic member 6 is sleeved outside the protrusion 35 through the guide hole 621.

[0129] A guide hole 621 is provided at the end of the first elastic member 6; a protrusion 35 is provided at the base 3, and when the first elastic member 6 is deformed, it moves back and forth relative to the protrusion 35 through the guide hole 621; along the length direction of the guide hole 621, the hole wall of the guide hole 621 away from the end of the first elastic member 6 is the first hole wall 6211, and the hole wall of the guide hole 621 close to the end of the first elastic member 6 is the second hole wall 6212, the circumferential surface of the protrusion 35 close to the first hole wall 6211 is the first limiting surface 30a, and the circumferential surface of the protrusion 35 close to the second hole wall 6212 is the second limiting surface 30b.

[0130] Exemplarily, the main body of the first elastic member 6 is a sheet-like structure, and an adapter sheet 62 is respectively provided at both ends thereof. The adapter sheet 62 is substantially perpendicular to the plate surface of the first elastic member 6, and the guide hole 621 is provided on the adapter sheet 62. Exemplarily, the adapter sheet 62 is integrally formed with the first elastic member 6, and the guide hole 621 is an oblong hole. In the above design, the first fixing portion 63 of the first elastic member 6 is fixedly connected to the moving contact member 11 when its plate surface is attached to the surface of the moving contact member 11. In this way, since the first elastic portion 64 of the first elastic member 6 is thin in the movement direction of the moving contact member 11, it is easy to deform and meets the elastic deformation requirements of this embodiment. On this basis, by providing the adapter sheet 62 perpendicular to the plate surface of the first elastic member 6, the guide hole 621 can be formed without increasing the thickness of the main body of the first elastic member 6, thereby ensuring that the first elastic member 6 has excellent elastic deformation ability and does not increase the material used for the first elastic member 6.

[0131] In the closed position, the first hole wall 6211 abuts against the first limit surface 30a on the protrusion 35. When the moving contact 11 switches from the closed position to the open position, the first elastic member 6 releases energy and extends to both ends. At this time, the second hole wall 6212 approaches the protrusion 35 until the second hole wall 6212 abuts against the second limit surface 30b on the protrusion 35, and the moving contact 11 is in the open position.

[0132] See also Fig.28 As shown, two adapter plates 62 are provided at each end of the first elastic member 6, and the two adapter plates 62 are parallel and spaced apart from each other on both sides of the first elastic portion 64 along its width direction. The two adapter plates 62 are provided with guide holes 621, and the two adapter plates 62 are sleeved on the outside of the protrusion 35 through the guide holes 621 thereon, so as to improve the structural strength of the fitting point between the first elastic member 6 and the protrusion 35, so that the movement of the pushing member 5 and the moving contact member 11 is smoother.

[0133] In one embodiment, see Fig.24 , Fig.26 and Fig. 27 As shown, the relay further includes a second elastic member 7, and the push member 5 is provided with a third limiting surface 50a and a fourth limiting surface 50b opposite to each other along the action direction of the moving contact 11; one end of the second elastic member 7 abuts against the third limiting surface 50a, and the other end of the second elastic member 7 presses the moving contact 11 against the fourth limiting surface 50b in the direction toward the static contact 12. Exemplarily, the third limiting surface 50a is the surface of the push block facing the moving contact 11, the fourth limiting surface 50b is the surface of the bracket away from the static contact 12, and the fourth limiting surface 50b abuts against the surface of the moving contact 11 close to the static contact 12.

[0134] In this embodiment, the pusher 5 can be suspended in the base 3 to eliminate the friction between the pusher 5 and the base 3 , and the required coil driving force is also smaller, so the volume of the magnetic circuit part 2 can be reduced.

[0135] In this embodiment, the moving contact member 11 is stably located on the fourth limiting surface 50 b of the pushing member 5 under the action of the second elastic member 7 , and the pushing member 5 and the moving contact member 11 move synchronously.

[0136] In one embodiment, the second elastic member 7 includes a second fixing portion 72 and a second elastic portion 71 , the second fixing portion 72 is connected to the moving contact member 11 , and the second elastic portion 71 abuts against the third limiting surface 50 a .

[0137] Exemplarily, there are two second fixing portions 72 , and the two second fixing portions 72 are respectively integrally formed at two ends of the second elastic portion 71 . The two second fixing portions 72 are respectively riveted to two ends of the moving contact 11 .

[0138] The second fixing portions 72 at both ends of the second elastic member 7 are respectively fixedly connected to the two ends of the moving contact member 11, and the portion between the two ends of the second elastic member 7 constitutes the second elastic portion 71 and abuts against the pushing block in the pushing member 5. In order to improve stability, this portion is also positioned with the pushing block by respectively providing positioning protrusions and positioning holes suitable for plugging into each other.

[0139] Since the second elastic member 7 has a tensioning force, when the pushing member 5 reaches the overstroke, the pushing member 5 can abut the moving contact member 11 through the second elastic member 7, so that the moving contact member 11 forms an abutment with the static contact member 12 through elastic abutment, ensuring that the moving contact 111 and the static contact 121 can still maintain a certain contact pressure after electric grinding, and can use the spring force to buffer and reduce bounce when the moving contact 111 and the static contact 121 are closed, and when the moving contact 111 and the static contact 121 are separated, the moving contact 111 obtains a certain initial kinetic energy, breaks the fusion welding point, increases the initial breaking speed, reduces the arcing time, and thus increases the speed of medium recovery.

[0140] For example, see Fig.26 As shown, the second elastic portion 71 includes a transverse portion 711 and inclined portions 712 located at both ends of the transverse portion 711, the angle between the inclined portion 712 and the transverse portion 711 is an obtuse angle, the second fixed portion 72 is connected to the inclined portion 712, the projection of the free end of the second fixed portion 72 on the plane where the transverse portion 711 is located is located in the transverse portion 711, and the angle between the second fixed portion 72 and the inclined portion 712 is an acute angle.

[0141] In one embodiment, the number of dynamic contacts 11 is at least two, and each dynamic contact 11 is arranged and connected in parallel along an axial direction perpendicular to the extension direction of the dynamic contact 11 and the coil body 211; the number of second elastic members 7 is multiple and corresponds to each dynamic contact 11 one by one, and any two adjacent second elastic members 7 are connected to each other; any two adjacent dynamic contacts 11 are suitable for relative displacement along the movement direction of the dynamic contact 11 based on the elastic deformation ability of the connecting parts of the two second elastic members 7.

[0142] The technical solution of this embodiment is described below by taking the example that the number of the movable contacts 11 is two.

[0143] The two moving contacts 11 are spaced apart in the thickness direction of the relay, see Figure 3 As shown, the direction close to the reader is defined as the front, and the direction away from the reader is defined as the back. Figure 3 The moving contact 11 located in the front is shown in FIG. 1 , and the moving contact 11 located in the rear is blocked by the moving contact 11 located in the front. Fig. 27 As shown, the number of second elastic members 7 is the same as the number of dynamic contacts 11, and the middle position of the second elastic portions 71 of the two second elastic members 7 are integrally formed, and a gap is set between the mutually adjacent edges of the two second elastic portions 71 so that the area of ​​the middle connection of the two second elastic portions 71 is small and has a certain deformation ability, thereby ensuring that the two dynamic contacts 11 can be relatively displaced and adaptively adjusted along the movement direction of the dynamic contact 11.

[0144] Specifically, there may be manufacturing errors and assembly errors between the static contact 121 and the moving contact 111, and there may be arcing losses during use, which may cause the contact gaps between the two moving contacts 11 and the static contact 12 to be inconsistent. In this case, if the two moving contacts 11 always remain in the same vertical plane, then there may be a problem that the moving contact 111 of one of the moving contacts 11 is in contact with the static contact 121, while the moving contact 111 of the other moving contact 11 is not in contact with the static contact 121. In other words, the consistency of the on-off coordination of the two moving contacts 11 and the static contact 12 is different, and the contact pressure may also be different. In this embodiment, by providing the second elastic member 7, the area of ​​the middle connection of the second elastic portion 71 is small and has a certain deformation capacity, and allows the two moving contacts 11 to be appropriately displaced along the height direction D1 of the relay, the moving contact 11 located in the front moves down, and the moving contact 11 located in the rear moves up, or the moving contact 11 located in the front moves up, and the moving contact 11 located in the rear moves down, forming a self-balancing effect, so that the two moving contacts 11 can reliably contact the corresponding static contacts 121 and maintain a considerable contact pressure.

[0145] The relay also includes a third elastic member, which is installed on the base 3 and is located on the side of the push member 5 away from the static contact member 12. When the dynamic contact member 11 is in the open position, the third elastic member abuts against the push member 5 to store energy and makes the dynamic contact member 11 tend to move toward the closed position.

[0146] When the moving contact 11 moves to the disconnected position, the pushing member 5 abuts against the third elastic member, causing the third elastic member to undergo elastic deformation and store energy. When the moving contact 11 starts to move toward the closed position, the third elastic member releases energy and quickly pushes the moving contact 11 toward the static contact 12, thereby shortening the closing time and improving the response speed.

[0147] Finally, it should be noted that: it is understandable that the various embodiments / implementations provided by the present utility model can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0148] In the embodiments of the utility model, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0149] In the description of the utility model embodiments, it needs to be understood that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front", and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the utility model embodiments.

[0150] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0151] The above are only preferred embodiments of the utility model embodiments, and are not intended to limit the utility model embodiments. For those skilled in the art, the utility model embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model embodiments shall be included in the protection scope of the utility model embodiments.

Claims

1. A relay, characterized in that: It includes a magnetic circuit part, a swing connection part and a contact part; The contact part includes a moving contact piece and a static contact piece; The magnetic circuit part includes a coil assembly and an armature assembly, the coil assembly includes a coil body, and the coil body drives the armature assembly to switch and rotate around a first axis through magnetic force; The swing connection member has a first end and a second end, and a portion of the swing connection member located between the first end and the second end is suitable for rotating around a second axis; a vertical distance between the first end and the second axis is smaller than a vertical distance between the second end and the second axis; the swing connection member is configured to rotate by receiving the armature assembly being pushed by the first end, and the second end drives the movable contact member to move to a closed position or an open position during the rotation; In the closed position, the moving contact is in contact with the static contact; in the open position, the moving contact is separated from the static contact.

2. The relay according to claim 1, characterized in that: The second axis is parallel to the first axis.

3. The relay according to claim 1, characterized in that: The moving contact has an extension direction, and moving contacts are respectively arranged at both ends of the moving contact along the extension direction; the number of the static contact is two, and both of the two static contact are provided with static contacts; the two static contacts correspond to the two moving contacts respectively.

4. The relay according to claim 3, characterized in that: In the disconnected position, the sum of the gaps between the two moving contacts and their corresponding stationary contacts is at least 5.5 mm.

5. The relay according to claim 3, characterized in that: The number of the movable contacts is at least two, and the movable contacts are arranged in a direction perpendicular to the extending direction of the movable contacts and are connected in parallel.

6. The relay according to claim 3, characterized in that: The axis of the coil body is parallel to the movement direction of the moving contact; the extension direction of the moving contact is perpendicular to both the axis of the coil body and the first axis; the moving contact and the magnetic circuit portion are arranged along the extension direction of the moving contact.

7. The relay according to any one of claims 1 to 6, characterized in that: It also includes a pushing member; the moving contact member is installed and follows the pushing member; the second end can drive the pushing member to reciprocate in a direction parallel to the axial direction of the coil body, so that the moving contact member switches between the closed position and the open position.

8. The relay according to claim 7, characterized in that: One of the pushing member and the swing connecting member is provided with a toggle groove, and the other is provided with a toggle portion cooperating with the toggle groove; the toggle groove has a first limiting portion and a second limiting portion arranged at intervals along the movement direction of the moving contact member; when the swing connecting member swings back and forth, the toggle portion abuts against the first limiting portion and the second limiting portion respectively.

9. The relay according to claim 8, characterized in that: When the movable contact moves to the closed position, the toggle portion abuts against the first limiting portion to form a first abutment position; when the movable contact moves to the open position, the toggle portion abuts against the second limiting portion to form a second abutment position; the first abutment position and the second abutment position are located on the same straight line parallel to the axial direction of the coil body.

10. The relay according to claim 9, characterized in that: A swing arm is provided on the side of the armature assembly away from the coil body, and the swing arm is provided with a receiving groove, and the first end of the swing connecting member is located in the receiving groove; along the axial direction of the coil body, the receiving groove has a first groove wall and a second groove wall, and the distance between the first groove wall and the second groove wall is greater than the maximum width of the first end during the rotation process relative to the receiving groove.

11. The relay according to claim 10, characterized in that: When the groove wall of the accommodating groove pushes against the first end, it is in point contact or line contact with the first end.

12. The relay according to claim 10, characterized in that: Along the axial direction of the coil body, the swing arm is located on a side of the first axis away from the static contact piece.

13. The relay according to claim 12, characterized in that: The armature assembly includes a first armature and a second armature, the first armature is located at a side of the second armature away from the coil body; the two ends of the coil body are respectively provided with a first yoke and a second yoke, the first yoke is located at one end of the coil body away from the static contact, and the second yoke is located at the other end of the coil body; Along the axial direction of the coil body, the first axis is centrally disposed between an end of the first yoke for mating with the armature assembly and an end of the second yoke for mating with the armature assembly, and the first axis is closer to a side where the static contact is located than the second axis; The stroke of the first armature and the second armature rotating toward the first yoke is equal to the stroke of the first armature and the second armature moving toward the second yoke respectively; along the depth direction of the accommodating groove, the height of the first groove wall is greater than the height of the second groove wall.

14. The relay according to claim 12, characterized in that: The armature assembly includes a first armature and a second armature, the first armature is located at a side of the second armature away from the coil body; the two ends of the coil body are respectively provided with a first yoke and a second yoke, the first yoke is located at one end of the coil body away from the static contact, and the second yoke is located at the other end of the coil body; Along the axial direction of the coil body, the first axis is located between an end of the first yoke for mating with the armature assembly and an end of the second yoke for mating with the armature assembly, on a side closer to the first yoke, and the first axis and the second axis are located at the same height position; The strokes of the first armature and the second armature respectively rotating toward the first yoke are smaller than the strokes of the first armature and the second armature respectively rotating toward the second yoke.

15. The relay according to any one of claims 1 to 6, characterized in that: The swing connection member includes a first connection section and a second connection section, and a second rotating shaft fixedly connected between the first connection section and the second connection section; the free end of the first connection section is the first end of the swing connection member, the free end of the second connection section is the second end of the swing connection member, and the axis of the second rotating shaft is the second axis.

16. The relay according to claim 15, characterized in that The first connecting section, the second connecting section and the second rotating shaft are integrally formed.

17. The relay according to any one of claims 1 to 6, characterized in that: It also includes a base for accommodating the contact portion, the magnetic circuit portion and the swing connection member. The armature assembly is provided with a first rotating shaft, the first rotating shaft is rotatably connected to the base, and the central axis of the first rotating shaft is the first axis.

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