Relay

Abstract

The utility model relates to the technical field of electronic control devices, in particular to a relay, which comprises a base, a movable contact assembly, a static contact piece and a magnetic circuit part, the movable contact assembly comprises a movable contact piece and a first elastic piece, the first elastic piece is connected with the movable contact piece, the magnetic circuit part is used for driving the movable contact piece to be switched between a closed position and an open position, the movable contact piece and the static contact piece are attracted at the closed position, and the movable contact piece and the static contact piece are disconnected at the open position; the base is provided with a limiting part, and the limiting part is configured to enable the first elastic piece to store energy in the action direction of the movable contact piece when the movable contact piece is located at the closed position and the open position, and to apply an acting force suitable for moving away from the static contact piece and an acting force suitable for moving towards the static contact piece to the movable contact piece. Therefore, the response speed of opening and closing of the moving contact and the static contact can be improved.

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] In the related art, the moving reed in the relay is slow when disconnecting and closing with the static reed, resulting in a decrease in the performance of the relay. Utility Model Content

[0004] The embodiment of the utility model provides a relay to improve the response speed of a moving component during disconnection and closing.

[0005] The relay provided by the embodiment of the utility model comprises a base, a moving contact assembly, a static contact piece and a magnetic circuit part; the moving contact assembly comprises a moving contact piece and a first elastic piece, the first elastic piece is connected to the moving contact piece, and the magnetic circuit part is used to drive the moving contact piece to switch between a closed position and an open position, in which the moving contact piece is attracted to the static contact piece, and in which the moving contact piece is disconnected from the static contact piece in the open position;

[0006] The base is provided with a limiting portion, and the limiting portion is configured to enable the first elastic member to store energy along the movement direction of the moving contact when the moving contact is in the closed position and the open position, and to apply a force suitable for moving away from the static contact and a force suitable for moving toward the static contact to the moving contact, respectively.

[0007] According to some embodiments of the utility model, the limiting portion has a first limiting surface and a second limiting surface spaced apart along the movement direction of the moving contact; the first limiting surface is configured to limit the first elastic member when the moving contact is in the closed position, and to cause the first elastic member to undergo elastic deformation so as to apply a force suitable for moving away from the static contact to the moving contact; the second limiting surface is configured to limit the first elastic member when the moving contact is in the disconnected position, and to cause the first elastic member to undergo elastic deformation so as to apply a force suitable for moving toward the static contact to the moving contact.

[0008] According to some embodiments of the utility model, the limiting portion includes a first limiting column and a second limiting column; the first limiting column and the second limiting column are spaced apart from each other along the movement direction of the moving contact member, and their facing surfaces constitute the second limiting surface and the first limiting surface respectively.

[0009] According to some embodiments of the utility model, the base is provided with a protrusion; the protrusion forms the first limiting surface and the second limiting surface on two sides opposite to each other along the movement direction of the moving contact piece respectively; a guide hole is provided at the end of the first elastic piece, and the first elastic piece is sleeved outside the protrusion through the guide hole.

[0010] According to some embodiments of the present invention, adapter plates are respectively provided at both ends of the first elastic member, and the guide hole is provided on the adapter plate.

[0011] According to some embodiments of the utility model, at least two adapter plates are provided at each end of the first elastic member, and at least two of the adapter plates are sleeved on the outside of the protruding portion through the guide hole.

[0012] According to some embodiments of the utility model, the first elastic member includes a first fixed portion and two first elastic portions; the first fixed portion is connected to the moving contact member; the two first elastic portions extend from both ends of the moving contact member along the extension direction of the moving contact member respectively; the base has two groups of limiting portions corresponding to the two first elastic portions respectively.

[0013] According to some embodiments of the utility model, it also includes a cover body, which is fixedly connected to the base, and the cover body cooperates with the base to limit at least one of the first elastic parts from moving in a direction perpendicular to the extension direction and the action direction of the dynamic contact piece.

[0014] According to some embodiments of the present invention, the base limits the movement of the first elastic member along a direction parallel to the extension direction of the moving contact member.

[0015] According to some embodiments of the utility model, the cover body is provided with a first abutment portion; the base is provided with a second abutment portion, a first retaining wall and a second retaining wall; the first abutment portion and the second abutment portion cooperate to abut at least one of the two first elastic portions along a direction perpendicular to both the extension direction and the action direction of the moving contact piece; the first retaining wall and the second retaining wall are used to abut against one side of the two first elastic portions away from each other along the extension direction of the moving contact piece.

[0016] According to some embodiments of the present invention, the ends of the two first elastic parts are each provided with a bending part; and the outer side surface of the bending part is suitable for abutting against the first retaining wall or the second retaining wall.

[0017] According to some embodiments of the utility model, it also includes a pushing member; the moving contact assembly is integrally installed on the pushing member; the magnetic circuit portion can drive the pushing member to reciprocate in a direction parallel to the action direction of the moving contact member, so that the moving contact member switches between the closed position and the open position; the first elastic member is supported on the base in a direction perpendicular to the extension direction of the moving contact member and the action direction of the moving contact member; along a direction perpendicular to the extension direction of the moving contact member and the action direction of the moving contact member, the pushing member is supported by the first elastic member and the driving end of the magnetic circuit portion and is suspended on the base.

[0018] According to some embodiments of the utility model, it also includes a second elastic member; the pushing member is provided with a third limiting surface and a fourth limiting surface opposite to each other along the movement direction of the moving contact member; one end of the second elastic member abuts against the third limiting surface, and the other end of the second elastic member presses the moving contact member against the fourth limiting surface.

[0019] According to some embodiments of the present invention, the second elastic member includes a second fixing portion and a second elastic portion, the second fixing portion is fixedly connected to the moving contact member, and the second elastic portion abuts against the third limiting surface.

[0020] According to some embodiments of the utility model, the number of the movable contacts is at least two, and the movable contacts are arranged in a direction perpendicular to the extension direction and the movement direction of the movable contacts and are connected in parallel; the number of the second elastic members is multiple and corresponds to each of the movable contacts one by one, and any two adjacent second elastic members are connected to each other; and any two adjacent movable contacts are suitable for relative displacement along the movement direction of the movable contacts based on the elastic deformation ability of the connecting parts of the two second elastic members.

[0021] According to some embodiments of the utility model, it also includes a third elastic member; the third elastic member is installed on the base, and the third elastic member is located on the side of the pushing member away from the static contact member. When the dynamic contact member is in the disconnected position, the third elastic member abuts against the pushing member to store energy and makes the dynamic contact member tend to move toward the closed position.

[0022] According to some embodiments of the utility model, the magnetic circuit portion includes a coil assembly and a magnetic rotating member, the coil assembly includes a coil body, and the magnetic rotating member is driven by the magnetic force of the coil body to reciprocate around a first axis within a preset swing range to drive the moving contact to move to a closed position or an open position.

[0023] According to some embodiments of the utility model, the relay also includes a transmission member; the transmission member has a first end and a second end, the first end is moved by the magnetic rotating member to make the part between the first end and the second end rotate around the second axis relative to the base, and make the second end able to drive the moving contact to move to the closed position or the open position, wherein the second axis is parallel to the first 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.

[0024] According to some embodiments of the utility model, one of the pushing member and the transmission member is provided with a first toggle groove, and the other is provided with a first toggle portion cooperating with the first toggle groove; the first 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 transmission member swings back and forth, the first toggle portion respectively abuts against the first limiting portion and the second limiting portion.

[0025] According to some embodiments of the utility model, when the movable contact moves to the closed position, the first toggle portion abuts against the first limiting portion to form a first abutment position; when the movable contact moves to the disconnected position, the first toggle portion abuts against the second limiting portion to form a second abutment position; the axial direction of the coil body is parallel to the movement direction of the movable contact, and 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.

[0026] According to some embodiments of the utility model, a first swing arm is provided on a side of the magnetic rotating member away from the coil body, the first swing arm is provided with a receiving groove, and the first end of the transmission 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.

[0027] 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.

[0028] According to some embodiments of the present invention, along the axial direction of the coil body, the first swing arm is located on a side of the first axis away from the static contact piece.

[0029] According to some embodiments of the utility model, the two ends of the coil body are respectively provided with a first yoke and a second yoke; the magnetic rotating member 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 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;

[0030] 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 magnetic rotating member and an end of the second yoke for mating with the magnetic rotating member, and the first axis is closer to a side where the static contact member is located than the second axis;

[0031] The travel of the first armature and the second armature rotating toward the first yoke is equal to the travel 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.

[0032] According to some embodiments of the utility model, the two ends of the coil body are respectively provided with a first yoke and a second yoke; the magnetic rotating member 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 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;

[0033] Along the axial direction of the coil body, the first axis is located between an end of the first yoke for mating with the magnetic rotating member and an end of the second yoke for mating with the magnetic rotating member, on a side closer to the first yoke, and the first axis and the second axis are located at the same height position;

[0034] 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.

[0035] According to some embodiments of the utility model, a second swing arm is provided on the side of the magnetic rotating part away from the coil body, the second swing arm can drive the moving contact to the closed position or the open position, and the position where the second swing arm is fixedly connected to the magnetic rotating part is located on the side of the first axis away from the static contact.

[0036] According to some embodiments of the present utility model, a reinforcement portion is provided at least on one side of the position where the second swing arm is connected to the magnetic rotating member along the swinging direction thereof.

[0037] According to some embodiments of the utility model, one of the pushing member and the second swing arm is provided with a second toggle groove, and the other is provided with a second toggle portion cooperating with the second toggle groove; the second toggle groove has a third limiting portion and a fourth limiting portion arranged at intervals along the movement direction of the moving contact member; when the moving contact member moves to the closed position, the second toggle portion abuts against the third limiting portion and forms a third abutting position; when the moving contact member moves to the disconnected position, the second toggle portion abuts against the fourth limiting portion and forms a fourth abutting position; the axial direction of the coil body is parallel to the movement direction of the moving contact member, and the third abutting position and the fourth abutting position are located on the same straight line parallel to the axial direction of the coil body.

[0038] According to some embodiments of the utility model, the third limiting portion is provided with a first arc guide surface bent away from the fourth limiting portion, the fourth limiting portion is provided with a second arc guide surface bent away from the third limiting portion, and the shape of the projection of the second toggle portion in the set plane is circular, wherein the set plane is a plane that is simultaneously parallel to the extension direction of the moving contact piece and the axial direction of the coil body; when the moving contact piece moves to the closed position, the second toggle portion abuts against the first arc guide surface and forms a third abutment position; when the moving contact piece moves to the disconnected position, the second toggle portion abuts against the second arc guide surface and forms a fourth abutment position.

[0039] One embodiment of the above utility model has at least the following advantages or beneficial effects:

[0040] 1. In the relay provided by the embodiment of the utility model, when the magnetic circuit part drives the moving contact to move to the closed position, the limiting part can make the first elastic part store energy along the movement direction of the moving contact, that is, the limiting part can make the first elastic part store energy in the direction close to the static contact, thereby making the moving contact have a tendency to move toward the disconnected position. At the moment when the magnetic circuit part drives the moving contact to switch from the closed position to the disconnected position, the first elastic part releases energy to ensure that the moving contact and the static contact are quickly separated, thereby ensuring that the generated arc is small. At the same time, after the moving contact and the static contact are quickly disconnected, the moving contact continues to move in the direction away from the static contact. During this process, the first elastic part can generate a reaction force, which plays a buffering role in the movement of the moving contact, slows down the movement speed of the moving contact, and allows the contact part to stop breaking more stably, thereby ensuring stable arc ablation.

[0041] When the magnetic circuit part drives the moving contact to move to the disconnected position, the limiting part can cause the first elastic part to store energy along the movement direction of the moving contact, that is, the limiting part can cause the first elastic part to store energy in the direction away from the static contact, thereby making the moving contact have a tendency to move toward the closed position. At the moment when the magnetic circuit part drives the moving contact to switch from the disconnected position to the closed position, the first elastic part releases energy to ensure that the moving contact can quickly move toward the static contact, thereby improving the closing response speed and shortening the closing time.

[0042] 2. The moving contact piece is stably located on the fourth limiting surface of the pushing piece under the action of the second elastic piece, and the pushing piece and the moving contact piece move synchronously. Since the first elastic piece is supported on the base in a direction perpendicular to the extension direction of the moving contact piece and the movement direction of the moving contact piece, the first elastic piece and the moving contact piece can move stably, thereby ensuring that the pushing piece can indirectly abut against the base through the first elastic piece and the driving end of the magnetic circuit part, so that the pushing piece can be suspended in the base, eliminating the friction between the pushing piece and the base, and the required coil driving force is also smaller, thereby reducing the volume of the magnetic circuit part.

[0043] 3. The first elastic member is supported on the base, and the magnetic rotating member is also supported on the base. On this basis, the pushing member is supported by the magnetic rotating member and the first elastic member and suspended in the base. Accordingly, the present invention utilizes the first elastic member to support the base, so that the moving contact member and the pushing member are both suspended in the base without abutting against the inner wall of the base, avoiding friction between the moving contact member and the pushing member and the base during movement, thereby reducing the required magnetic driving force, so that the magnetic circuit part can be reduced in size, which is conducive to the miniaturization design of the relay.

[0044] 4. Since the movement stability of the pushing member is affected during the process of converting the rotation of the magnetic rotating member into the linear motion of the pushing member, in the present disclosure, the first elastic member is limited on both sides along the direction perpendicular to the extension direction and the action direction of the moving contact member, so that the freedom of the first elastic member in this direction is limited, so that the pushing member will not rotate due to unbalanced force when the moving contact assembly is subjected to heavy weight, thereby further improving the stability of the pushing member. In addition, the first elastic member in the present disclosure is also limited in the extension direction of the moving contact member, so the pushing member will not swing and can stably move along its action direction, so that the two moving contacts of the moving contact member can reliably contact and separate with the corresponding static contact members. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 What is shown is a three-dimensional structural schematic diagram of a relay provided in an embodiment of the utility model;

[0046] 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;

[0047] Figure 3 What is shown is a schematic diagram of the internal structure of a relay provided by an embodiment of the utility model;

[0048] 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;

[0049] Figure 5 It is shown that Figure 4 A partial enlarged view of point Ⅰ in the middle;

[0050] 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;

[0051] Figure 7 It is shown that Figure 6 A partial enlarged view of the middle II;

[0052] Figure 8 Shown is a cross-sectional view of a relay provided by an embodiment of the utility model;

[0053] Fig. 9 It is shown that Figure 8 A partial enlarged view of the middle part III;

[0054] 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);

[0055] 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);

[0056] Fig.12 It is shown that Fig.11 A schematic diagram of the structure of a magnetic rotating part in the relay shown;

[0057] 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);

[0058] Fig.14 It is shown that Fig.13 A partial enlarged view of the middle IV;

[0059] 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;

[0060] Fig.16 It is shown that Fig.14 A schematic diagram of the structure of a magnetic rotating part in the relay shown;

[0061] Fig.17 It is shown that Fig.16 A top view of a magnetic rotating member is shown;

[0062] 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;

[0063] Fig.19 What is shown is a schematic diagram of the structure of a transmission member in a relay provided by an embodiment of the utility model;

[0064] Fig. 20 The figure shows a schematic diagram of the structure of the fourth relay provided by the embodiment of the utility model (the moving contact is in the closed position);

[0065] Fig.21 Shown is a structural schematic diagram of a fourth relay provided by an embodiment of the utility model (the moving contact is in the disconnected position);

[0066] Fig. 22 It is shown that Fig.21 A schematic diagram of the structure of the magnetic rotating member in the relay matching with the second swing arm is shown;

[0067] 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;

[0068] 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;

[0069] 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;

[0070] Fig.26 Shown is a front view of a second elastic member in a relay provided by an embodiment of the utility model;

[0071] 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;

[0072] Fig.28 The third structural schematic diagram of the relay provided by the embodiment of the utility model is shown (the moving contact is in the closed position);

[0073] Fig.29 It is shown that Fig.28 A partial enlarged view of point V in the middle;

[0074] Fig.30 The fourth structural schematic diagram of the relay provided by the embodiment of the utility model is shown (the moving contact is in the disconnected position);

[0075] Fig.31 It is shown that Fig.30 A partial enlarged view of the middle VI;

[0076] Fig.32 It is shown that Fig.30 A schematic diagram of the cooperation between the moving contact assembly, the pushing member and the magnetic rotating member in the relay shown;

[0077] Fig.33 Shown is a fourth structural schematic diagram of a relay provided by an embodiment of the utility model;

[0078] Fig.34 It is shown that Fig.30 A schematic diagram of the structure of a moving contact assembly in a relay shown;

[0079] Fig.35 It is shown that Fig.30 A front view of a moving contact assembly in the relay shown;

[0080] Fig.36 It is shown that Fig.30 A schematic structural diagram of a second elastic member in the relay shown;

[0081] Fig.37 It is shown that Fig.30 A schematic structural diagram of a first elastic member in the relay shown;

[0082] Fig.38 It is shown that Fig.13 A schematic structural diagram of a first elastic member in a relay is shown.

[0083] Icon: 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-magnetic rotating part; 221-fixed part; 2211-first rotating shaft; 222-first armature; 2221-recessed part; 223-second armature; 224- Magnetic steel; 225-first swing arm; 2251-first slot wall; 2252-second slot wall; 226-second swing arm; 2261-third limiting portion; 2261a-first circular arc guide surface; 2262-fourth limiting portion; 2262a-second circular arc guide surface; 227-third swing arm; 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-protruding portion; 36-first retaining wall; 37-first boss; 38-third limiting column; 39-fourth limiting column; 4-transmission 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- Toggle rod; 6-first elastic member; 61-bending portion; 62-adapter plate; 621-guide hole; 6211-first hole wall; 6212-second hole wall; 63-first fixing portion; 64-first elastic portion; 641-stop plate; 7-second elastic member; 71-second elastic portion; 711-transverse portion; 712-inclined portion; 72-second fixing portion; 8-micro switch; 9-cover body; 10-fixing frame; 20-third elastic member. DETAILED DESCRIPTION

[0084] 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.

[0085] See also Figures 1 to 38 As shown, Figure 1 The 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.

[0086] The present embodiment provides a relay, including a base 3, a moving contact assembly, a static contact 12 and a magnetic circuit portion 2; the moving contact assembly includes a moving contact 11 and a first elastic member 6, the first elastic member 6 is connected to the moving contact 11, and the magnetic circuit portion 2 is used to drive the moving contact 1 to switch between a closed position and an open position, in which the moving contact 11 is attracted to the static contact 12, and in the open position, the moving contact 11 is disconnected from the static contact 12; the base 3 is provided with a limiting portion, and the limiting portion is configured to allow the first elastic member 6 to store energy along the movement direction of the moving contact 11 when the moving contact 11 is in the closed position and the open position, and to apply 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.

[0087] In the relay provided in this embodiment, when the magnetic circuit part 2 drives the moving contact 11 to move to the closed position, the limiting part can enable the first elastic member 6 to store energy along the movement direction of the moving contact 11, that is, the limiting part can enable the first elastic member 6 to store energy in the direction close to the static contact, thereby making the moving contact 11 have a tendency to move toward the disconnected position. At the moment when the magnetic circuit part 2 drives the moving contact 11 to switch from the closed position to the disconnected position, the first elastic member 6 releases energy to ensure that the moving contact 11 and the static contact 12 are quickly separated, thereby ensuring that the generated arc is small. At the same time, after the moving contact 11 and the static contact 12 are quickly disconnected, the moving contact 11 continues to move in the direction away from the static contact 12. The first elastic member 6 can generate a reaction force, which has a buffering effect on the movement of the moving contact 11, slowing down the movement speed of the moving contact 11, allowing the contact part 1 to stop breaking more stably, and ensuring stable arc ablation.

[0088] When the magnetic circuit part 2 drives the moving contact 11 to move to the disconnected position, the limiting part can enable the first elastic member 6 to store energy along the movement direction of the moving contact 11, that is, the limiting part can enable the first elastic member 6 to store energy in the direction away from the static contact 12, thereby making the moving contact 11 have a tendency to move toward the closed position. At the moment when the magnetic circuit part 2 drives the moving contact 11 to switch from the disconnected position to the closed position, the first elastic member 6 releases energy to ensure that the moving contact 11 can quickly move toward the static contact 12, thereby improving the closing response speed and shortening the closing time.

[0089] In this embodiment, the moving contact 11 has an extension direction, and moving contacts 111 are respectively provided at both ends along the extension direction of the moving contact 11; the two static contacts 12 are each provided with a static contact 121 and an electrical connection end 13; the moving contact 11, the two static contacts 12 and the electrical connection end 13 constitute the contact portion 1. The two static contacts 121 correspond to the moving contacts 111 respectively, the electrical connection end 13 is led outward from the base 3, and can be installed for an external mutual inductor, and the two electrical connection ends 13 both extend away from the moving contact 11 along the action direction of the moving contact 11.

[0090] See also Figure 2 As shown, the relay also includes a cover body 9, which is fixedly connected to the base 3, and the magnetic circuit part 2 and the contact part 1 are both installed in the space formed by the base 3 and the cover body 9. One end of the electrical connection terminal 13 is connected to the static contact 12, and the other end of the electrical connection terminal 13 extends from the side wall of the base 3 to the outside of the base 3 for connecting to the corresponding position of the electric meter.

[0091] The moving direction of the moving contact 11 is bidirectional, which refers to the direction in which the moving contact 111 and the stationary contact 121 move toward and away from each other.

[0092] In one embodiment, the magnetic circuit portion 2 includes a coil assembly 21 and a magnetic rotating member 22, the coil assembly 21 includes a coil body 211, and the magnetic rotating member 22 is driven by the magnetic force of the coil assembly 21 to reciprocate around the first axis within a preset swing range to drive the movable contact 11 to move to a closed position or an open position. The preset swing range refers to the range between the position of the magnetic rotating member 22 when the movable contact 11 is in the closed position and the position of the magnetic rotating member 22 when the movable contact 11 is in the open position.

[0093] In one embodiment, see Figure 6 and Fig.16 As shown, the magnetic rotating member 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 the end of the first armature 222 and the second armature 223 away from the static contact member 12, and the second yoke 213 is located at the end 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.

[0094] In this embodiment, see Fig. 20As shown, the magnetic rotating member 22 also includes a magnet 224, 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 224 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.

[0095] See also Fig.18 and Fig. 20 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 224 is installed in the space formed between the two opposite recessed portions 2221, which can increase the volume of the magnetic steel 224 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 224 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.

[0096] 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 has a through hole. Fig.15 and Fig.16 As shown, the fixing member 221 is provided with a first rotating shaft 2211, and the 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, and 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, and the first rotating shaft 2211 swings around its own axis relative to the sleeve to realize switching between the closed position and the open position.

[0097] One end of the first yoke 212 is located between one end of the first armature 222 and the second armature 223 away from the static contact 12, 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.

[0098] Specifically, see Figure 4As 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.

[0099] 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 magnetic rotating part 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.

[0100] In one embodiment, the limiting portion has a first limiting surface 30a and a second limiting surface 30b arranged at intervals along the movement direction of the moving contact 11; the first limiting surface 30a is configured to limit the first elastic member 6 when the moving contact 11 is in a closed position, and to cause the first elastic member 6 to elastically deform toward the static contact 12, so as to apply a force suitable for moving away from the static contact 12 to the moving contact 11; the second limiting surface 30b is configured to limit the first elastic member 6 when the moving contact 11 is in an open position, and to cause the first elastic member 6 to elastically deform away from the static contact 12, so as to apply a force suitable for moving toward the static contact 12 to the moving contact 11.

[0101] In the closed position, the first limiting surface 30a limits the first elastic member 6 and causes the first elastic member 6 to undergo elastic deformation toward the static contact member 12. At this time, the first elastic member 6 stores energy. When the magnetic rotating member 22 switches from the closed position to the disconnected position, the first elastic member 6 releases energy to ensure that the moving contact 111 and the static contact 121 can be quickly disconnected, thereby ensuring that the generated arc is small and avoiding the arc from deviating from the contact. At the same time, after the moving contact 111 and the static contact 121 are quickly disconnected, the moving contact 11 continues to move away from the static contact 12. During this process, the first elastic member 6 can generate a reaction force, which buffers the movement of the moving contact 11, slows down the movement speed of the moving contact 11, and allows the contact part 1 to stop breaking more stably.

[0102] In the disconnected position, the second limiting surface 30b limits the first elastic member 6 and causes the first elastic member 6 to elastically deform away from the static contact member 12. At this time, the first elastic member 6 stores energy. When the magnetic rotating member 22 switches from the disconnected position to the closed position, the first elastic member 6 releases energy to ensure that the moving contact 111 can move quickly toward the static contact member 12, thereby improving the closing response speed and shortening the contact closing time. This is crucial for controlling the closing time under a large contact gap state.

[0103] In one possible design, see Figure 5 and Figure 7 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.

[0104] In this possible design, see Fig.25 As 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.

[0105] 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.

[0106] See also Figure 2As 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.

[0107] 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.

[0108] 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 movable contact 11 .

[0109] See also Figure 5 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 .

[0110] 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.

[0111] 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 movable contact member 11. The spring structure is perpendicular to the base 3, and the thickness surface of one side of the spring structure in the length direction abuts against the base 3.

[0112] 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.

[0113] 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 .

[0114] See also Fig. 20As shown, a stopper sheet 641 may be further provided on one side of the first elastic portion 64 , and the stopper sheet 641 may limit the travel of the first elastic member. Specifically, the stopper sheet 641 and the first limiting column 33 are located on the same side of the first elastic portion 64 .

[0115] 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.

[0116] A guide hole 621 is provided at the end of the first elastic member 6; a protrusion 35 is provided on the base 3, and the protrusion 35 reciprocates relative to the first elastic member 6 along the length direction of 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.

[0117] 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.

[0118] 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.

[0119] See also Fig.38 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 enhance the structural strength of the fitting point between the first elastic member 6 and the protrusion 35, so as to make the movement of the dynamic contact member 11 smoother.

[0120] It should be noted that one adapter plate may be provided at each end of the first elastic member, or three or more adapter plates may be provided. Of course, the number of adapter plates provided at the two ends of the first elastic member may be the same or different.

[0121] In one embodiment, the relay also includes a pusher 5, and the moving contact 11 is integrally installed on the pusher 5; the magnetic circuit portion 2 can drive the pusher 5 to reciprocate in a direction parallel to the action direction of the moving contact 11, so that the moving contact 11 switches between a closed position and an open position; the first elastic member 6 is supported on the base 3 in a direction perpendicular to the extension direction of the moving contact 11 and the action direction of the moving contact 11; along the direction perpendicular to the extension direction of the moving contact 11 and the action direction of the moving contact 11, the pusher 5 is supported by the first elastic member 6 and the driving end of the magnetic circuit portion and suspended on the base 3.

[0122] The moving contact piece 11 in this embodiment is integrally installed on the pushing piece 5, and the moving contact piece is not connected to other parts. The pushing piece 5 pushes the moving contact piece 11 to move as a whole, and bears a large gravity. This embodiment limits the pushing piece 5 by setting a first elastic piece 6, which can improve the stability of the pushing piece 5 and the moving contact piece 11 during the movement.

[0123] Exemplarily, the pusher 5 includes a bracket and a push block. The bracket may be a U-shaped bracket, and the opening of the U-shaped bracket faces the push block. Both ends of the push block are provided with protrusions, and the two side walls of the bracket are provided with clamping holes. The two protrusions are correspondingly clamped in the two clamping holes. The moving contact member 11 is connected to the second elastic member 7 (see Fig.24 ) is positioned between the bracket and the push block, which will be described in detail below.

[0124] In one embodiment, see Fig.24 , Fig.26 and Fig. 27As 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.

[0125] 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.

[0126] 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.

[0127] 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 .

[0128] 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 .

[0129] 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.

[0130] 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.

[0131] For example, see Fig.26As 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.

[0132] In one embodiment, the number of dynamic contacts 11 is at least two, and each dynamic contact 11 is arranged in a direction perpendicular to the extension direction and the movement direction of the dynamic contact 11 and connected in parallel; 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.

[0133] The technical solution of this embodiment is described below by taking the example that the number of the movable contacts 11 is two.

[0134] 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.

[0135] 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.

[0136] In one embodiment, see Fig. 20 and Fig.21 As shown, the relay also includes a third elastic member 20, 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 moving contact member 11 is in the open position, the third elastic member 20 abuts against the push member 5 to store energy and makes the moving contact member 11 tend to move toward the closed position.

[0137] When the moving contact 11 moves to the disconnected position, the pushing member 5 abuts against the third elastic member 20, causing the third elastic member 20 to undergo elastic deformation and store energy. At the moment when the moving contact 11 starts to move toward the closed position, the third elastic member 20 releases energy and quickly pushes the moving contact 11 toward the static contact 12, thereby shortening the closing time and improving the response speed.

[0138] In one embodiment, along the axial direction of the coil body 211 , the end of the coil assembly 21 facing the same end as the electrical connection end 13 is flush with the side of the static contact 12 facing away from the static contact point 121 , so that the coil assembly 21 and the static contact 12 can both rest against the side wall of the base 3 .

[0139] In one embodiment, the maximum distance between two inner walls of the base 3 that are opposite to each other in the axial direction of the coil body 211 is adapted to the maximum length of the coil assembly 21 in the axial direction of the coil body 211 .

[0140] Since the axial dimension of the coil assembly 21 basically determines the maximum dimension of the relay in the height direction, that is, after the dimension of the relay in the height direction is adapted to the axial dimension of the coil assembly 21 along the coil body 211, the dimension of the relay in the height direction is not significantly increased as much as possible to achieve miniaturization.

[0141] In one embodiment, in the disconnected position, the sum of the gaps between the moving contacts 111 at both ends of the moving contact 11 and the corresponding stationary contacts 121 is at least 5.5 mm.

[0142] 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.

[0143] In some embodiments, the number of moving contact members 11 is one, and correspondingly, the number of moving contact points 111 is two. When the moving contact member 11 and the static contact member 12 are disconnected, the gaps between the two moving contact points 111 of the moving contact member 11 and the corresponding static contact points 121 are both 3 mm. Then, the total contact gap between the moving contact member 11 and the static contact member 12 is 6 mm. The movement stroke of the moving contact member 11 relative to the static contact member 12 is smaller, but it can meet the requirements of the new standard of the State Grid smart IoT meter.

[0144] Of course, the gap between a moving contact point 111 of the moving contact member 11 and its corresponding static contact point 121 is not limited to 3 mm, and can be set according to the actual application environment and actual needs.

[0145] In one embodiment, the number of the moving contacts 11 is at least two, and each moving contact 11 is arranged and connected in parallel along a direction perpendicular to the extension direction of the moving contact 11 and the axial direction of the coil body 211. After the contact portion 1 is closed, a multi-contact parallel structure is formed, which plays a role in shunting. On the one hand, it is beneficial to reduce the temperature rise near the contact point, and 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.

[0146] 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, and there are four groups of moving and static contacts in total. When the four groups of moving and static contacts are subjected to high current and voltage loads, they play the role of voltage division in the series structure and current diversion in the parallel structure, thereby reducing the load on the contacts, improving the performance of the relay, and enhancing the reliability.

[0147] In other embodiments, the number of the moving contacts 11 may be three or more.

[0148] In one embodiment, the relay also includes a transmission member 4; the transmission member 4 has a first end and a second end, the first end is driven by the magnetic rotating member 22 so that the portion between the first end and the second end rotates around the second axis relative to the base 3, and the second end can drive the moving contact 11 to move to a closed position or an open position, wherein the second axis is parallel to the first 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.

[0149] The use of the transmission member 4 can not only save effort and improve the structural strength, but also make full use of the internal space of the relay. Figure 4 and Fig.19 As shown, the transmission member 4 is a lever structure, which includes a first connecting section 41, a second connecting section 42 and a second rotating shaft 43. The second rotating shaft 43 is located between the first connecting section 41 and the second connecting section 42. The end of the first connecting section 41 away from the second rotating shaft 43 is the first end of the transmission member 4, and the end of the second connecting section 42 away from the second rotating shaft 43 is the second end of the transmission member 4. Fig.15 As 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 magnetic rotating member 22, increase the possibility of realizing a large stroke (not less than 5.5mm) of the disconnection and closing of the contact part 1, and further facilitate the realization of a large contact gap between the dynamic contact 11 and the static contact 12 in a smaller space. In addition, the magnetic gap and stroke matching of the magnetic circuit part 2 can be controlled to optimize the design, ensure magnetic efficiency, and control the cost and volume to the best solution.

[0150] In this embodiment, the second axis is parallel to the first axis, which not only ensures that the extension direction of the transmission member 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 transmission member 4. During the rotation of the transmission member 4, it can also be more stable and smooth, and the end of the transmission member 4 will not be worn due to the inclination of the transmission member 4.

[0151] In one embodiment, one of the pusher 5 and the transmission member 4 is provided with a first toggle groove, and the other is provided with a first toggle portion that cooperates with the first toggle groove; see Figure 3 and Figure 4 As shown, the first toggle groove has a first limit portion 51 and a second limit portion 52 arranged at intervals along the movement direction of the movable contact member 11; when the transmission member 4 swings back and forth, the first toggle portion abuts against the first limit portion 51 and the second limit portion 52 respectively.

[0152] Exemplarily, when the movable contact 11 moves to the closed position, the first shifting portion abuts against the first limiting portion 51 to form a first abutting position; when the movable contact 11 moves to the open position, the first shifting portion abuts against the second limiting portion 52 to form a second abutting position; 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.

[0153] In this embodiment, see Figure 4 and Figure 6 As shown, the pushing member 5 is provided with a first toggle groove, and the transmission member 4 is provided with a first toggle portion. By controlling the transmission 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.

[0154] In this embodiment, the first toggle groove is arranged in the pushing member 5, and the two groove walls of the first 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 transmission member 4 is located in the first 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.

[0155] Exemplarily, the second end is formed into a second columnar portion 421, and the second columnar portion 421 serves as a first toggle portion and is located in the first 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.

[0156] After the moving contact 111 and the static contact 121 are quickly disconnected, when the moving contact 11 continues to move away from the static contact 12, the first elastic member 6 can generate a reaction force to buffer the movement of the moving contact 11, slow down the movement speed of the moving contact 11, and allow the contact part 1 to stop more stably, thereby preventing the second end of the transmission member 4 from moving in the first toggle groove of the push member 5 after disconnection, thereby ensuring stable arc ablation.

[0157] In other embodiments, a first toggle portion may be provided on the pushing member 5 , and a first toggle groove may be provided at the second end of the transmission member 4 .

[0158] In one embodiment, a first swing arm 225 is provided on the side of the magnetic rotating member 22 away from the coil body 211, and the first swing arm 225 is provided with a receiving groove, and the first end of the transmission 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.

[0159] See also Figure 4 and Fig.17 As shown, the first swing arm 225 is arranged on the surface of the fixing member 221 close to the first armature 222, the first swing arm 225 is located on the side of the first axis close to the first yoke 212, the first swing arm 225 is provided with a receiving groove, the first end of the transmission 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 of the transmission member 4 (i.e., the first columnar portion 411) during the rotation relative to the receiving groove; Example In the process of the magnetic rotating member 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 magnetic rotating member 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 transmission member 4.

[0160] Exemplarily, the first swing arm 225 and the fixing member 221 are integrally formed. Exemplarily, the first swing arm 225 and the fixing member 221 can be integrally formed by injection molding.

[0161] 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.

[0162] 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.

[0163] 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.

[0164] In one embodiment, along the axial direction of the coil body 211 , the first swing arm 225 is located on a side of the first axis away from the static contact 12 .

[0165] In this embodiment, the transmission member 4 is arranged in the overlapping space of the magnetic circuit part 2 and the contact part 1 in the length direction and the height direction, which is the most space-saving. Specifically, refer to Figure 4 , the transmission member 4 is arranged in the space on the left side of the magnetic circuit part 2 and above the contact part 1, so that the internal space of the relay can be fully utilized. At this time, the first swing arm 225 is set to an eccentric structure, so that the transmission member 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, further realizing a large gap.

[0166] In one possible design, see Figure 6 and Fig.16 As shown, since the first swing arm 225 is an eccentric structure relative to the first axis, the movement of the first swing arm 225 will present a fan-shaped asymmetric movement. Therefore, the first swing arm 225 is designed to have different lengths. Specifically, 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, so that the first end can move in the accommodating groove. When the magnetic rotating part 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 accommodating groove, thereby driving the second end to move to the first position, and ensuring 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 11 and reducing the component force generated by the lateral deflection that affects the reliability of the contact part.

[0167] 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 magnetic rotating member 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 mating with the magnetic rotating member 22 and the end of the second yoke 213 for mating with the magnetic rotating member 22. 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 swinging angles of the magnetic rotating member 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.

[0168] 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 magnetic rotating member 22 and the end of the second yoke 213 for cooperating with the magnetic rotating member 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.

[0169] Specifically, the position of the first rotating shaft 2211 is set away from the center of the magnetic rotating member 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 moving contact member 11. At the same time, in order to ensure that the transmission 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 faces of the first armature 222 and the second armature 223 toward the first yoke 212 is smaller than the distance d2 between the pole faces of the first armature 222 and the second armature 223 toward the second yoke 213. When the magnetic rotating member 22 rotates around the first axis at a set angle, the strokes of the first armature 222 and the second armature 223 respectively rotating toward the first yoke 212 are smaller than the strokes of the first armature 222 and the second armature 223 respectively rotating toward 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.

[0170] 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 magnetic rotating part 22, and then adjust the angle between the pole surface and the center line of the first armature 222 and the second armature 223.

[0171] 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.

[0172] In this other possible design, along the depth direction of the receiving groove, the height of the first groove wall 2251 is equal to the height of the second groove wall 2252. 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 .

[0173] It should also be noted that a protrusion may be provided on the first swing arm 225 , and a groove may be provided on the first end of the transmission member 4 , the protrusion being located in the groove of the transmission member 4 , and the two moving in coordination.

[0174] 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 transmission member 4 can be used to trigger the micro switch 8 .

[0175] The micro switch 8 is adapted to be triggered by the transmission member 4. Figure 4 and Figure 6 When the transmission member 4 drives the moving contact 11 to the closed position and the open position, the transmission member 4 disengages from and presses against the moving spring of the micro switch 8 respectively. Therefore, by setting the micro switch 8, it can not only play an auxiliary monitoring role, but also further buffer the movement of the moving contact 11.

[0176] The relay provided in this embodiment, by providing the first elastic member 6, the second elastic member 7 and the micro switch 8, can not only realize the stable disconnection of the moving contact, but also the reaction force generated by the combination of the three can realize the rapid closing of the moving contact and the static contact, shorten the closing time and improve the response speed.

[0177] In a third possible design, the transmission member 4 may not be provided. In this case, the structure of the second swing arm 226 may be used to replace the first swing arm 225 .

[0178] In this third possible design, see Figure 20 to Figure 22As shown, a second swing arm 226 is provided on the side of the magnetic rotating member 22 away from the coil body 211. The second swing arm 226 can drive the moving contact 11 to move to a closed position or an open position. The position where the second swing arm 226 is fixedly connected to the magnetic rotating member 22 is located on the side of the first axis away from the static contact 12.

[0179] Exemplarily, a second swing arm 226 is provided on the side of the magnetic rotating member 22 away from the coil body 211, and one end of the second swing arm 226 is fixedly connected to the magnetic rotating member 22 at a position located on the side of the first axis away from the static contact member 12, and the other end of the second swing arm 226 can drive the pushing member 5 to reciprocate in a direction parallel to the axial direction of the coil body 211 so that the moving contact member 11 can switch between the closed position and the open position.

[0180] In this embodiment, the second swing arm 226 and the fixing part 221 are integrally formed, and a magnetic rotating part 22 with an integral long swing arm is used, which can reduce the number of parts, improve assembly efficiency, reduce the cumulative error of matching, and improve the push-pull stroke accuracy.

[0181] In the third possible design, a reinforcement portion is provided on at least one side of the position where the second swing arm 226 is connected to the magnetic rotating member 22 along the swinging direction thereof.

[0182] Specifically, the joint where the second swing arm 226 and the fixing member 221 are integrally formed is widened so that the width of the joint is greater than the width of the second swing arm 226. The widened portion forms a reinforcement portion, which also increases the mechanical strength of the second swing arm 226 to prevent fatigue fracture during multiple swinging and toggling.

[0183] In the third possible design, one of the push member 5 and the second swing arm 226 is provided with a second toggle groove, and the other is provided with a second toggle portion cooperating with the second toggle groove; the second toggle groove has a third limiting portion 2261 and a fourth limiting portion 2262 arranged at intervals along the movement direction of the moving contact member 11; when the moving contact member 11 moves to the closed position, the second toggle portion abuts against the third limiting portion 2261 and forms a third abutting position; when the moving contact member 11 moves to the disconnected position, the second toggle portion abuts against the fourth limiting portion 2262 and forms a fourth abutting position; the third abutting position and the fourth abutting position are located on the same straight line parallel to the axial direction of the coil body 211.

[0184] Exemplarily, the pusher 5 is provided with a second toggle portion, which can be a toggle rod 53, and the second swing arm 226 is provided with a second toggle groove. The second toggle groove has a third limiting portion 2261 and a fourth limiting portion 2262. Along the axial direction of the coil body 211, the third limiting portion 2261 is arranged away from the moving contact member 11, and the fourth limiting portion 2262 is arranged close to the moving contact member 11; the toggle rod 53 is provided with a third limiting matching portion and a fourth limiting matching portion; in the closed position, the third limiting matching portion abuts against the third limiting portion 2261 to form a third abutting position; in the disconnected position, the fourth limiting matching portion abuts against the fourth limiting portion 2262 to form a fourth abutting position; the third abutting position and the fourth abutting position are located on the same straight line parallel to the axial direction of the coil body 211.

[0185] Exemplarily, the push member 5 is provided with an accommodation space, the toggle rod 53 is arranged in the accommodation space, the toggle rod 53 is cylindrical, and the axis of the toggle rod 53 is parallel to the first axis. The portion of the circumferential surface of the toggle rod 53 away from the movable contact member 11 forms a third limit fitting portion, and the portion of the circumferential surface of the toggle rod 53 close to the movable contact member 11 forms a fourth limit fitting portion.

[0186] In this embodiment, a second toggle groove is provided at the free end of the second swing arm 226, and the second toggle groove has a pushing arm and a pulling arm, which are respectively located on both sides of the toggle rod 53, wherein the pushing arm is located on the side of the toggle rod 53 away from the moving contact piece, and the pushing arm is located on the other side; the pushing arm forms a third limiting portion 2261 on the surface of the toggle rod 53, and the pulling arm forms a fourth limiting portion 2262 on the surface of the toggle rod 53; in the closed position, the third limiting matching portion abuts against the third limiting portion 2261 to form a third abutting position; in the disconnected position, the fourth limiting matching portion abuts against the fourth limiting portion 2262 to form a fourth abutting position; the third abutting position and the fourth abutting position are located on the same straight line parallel to the axial direction of the coil body 211.

[0187] In the third possible design, the third limiting portion 2261 is provided with a first arc guide surface 2261a that is bent away from the fourth limiting portion 2262, the fourth limiting portion 2262 is provided with a second arc guide surface 2262a that is bent away from the third limiting portion 2261, and the projection of the second toggle portion in the set plane is circular, wherein the set plane is a plane that is parallel to the extension direction of the movable contact 11 and the axial direction of the coil body 211 at the same time; that is, the second toggle portion can be cylindrical or spherical, etc. When the movable contact 11 moves to the closed position, the second toggle portion abuts against the first arc guide surface 2261a, and forms a third abutting position; when the movable contact 11 moves to the open position, the second toggle portion abuts against the second arc guide surface 2262a, and forms a fourth abutting position.

[0188] In order to ensure that the moving contact 11 is located on the same center line when opening and closing, the second swing arm 226 of the magnetic rotating part 22 is designed to be in the form of a long and short push-pull arm combination, that is, along the depth direction of the second toggle groove, the length of the pulling arm is greater than the length of the pushing arm, so as to compensate for the asymmetric stroke caused by the eccentric setting of the second swing arm 226, and circular arc guide surfaces are respectively provided on the pushing arm and the pulling arm, which are used to limit the relative movement of the pushing member 5 and the second swing arm 226 along the extension direction of the moving contact 11 when the second swing arm 226 pushes the pushing member 5 into place, and enable the second toggle part to adaptively adjust to the highest point of the first circular arc guide surface 2261a or the highest point of the second circular arc guide surface 2262a, so as to achieve a self-correction function, ensure that the third abutment position and the fourth abutment position are located on the same straight line parallel to the axial direction of the coil body 211 when opening and closing, reduce the component caused by the conversion of rotational motion into linear motion, and improve the contact reliability of the relay.

[0189] Specifically, the length of the pulling arm is greater than that of the pushing arm, and the center of the first arc guide surface 2261a and the center of the second arc guide surface 2262a are offset, that is, the two centers are not on the same straight line parallel to the axial direction of the coil body 211.

[0190] When the push arm pushes the toggle rod 53 and drives the moving contact 11 to move toward the closed position, the first arc guide surface 2261a can cooperate with the circumferential surface of the toggle rod 53 to guide the movement of the toggle rod 53 and reduce the movement of the toggle rod 53 in the direction in which the moving contact 11 extends. When the pull arm pulls the toggle rod 53 and drives the moving contact 11 to move toward the disconnected position, the second arc guide surface 2262a can cooperate with the circumferential surface of the toggle rod 53 to guide the movement of the toggle rod 53 and reduce the movement of the toggle rod 53 in the direction in which the moving contact 11 extends, thereby ensuring that the toggle rod 53 can drive the moving contact 11 to move to the closed position and the disconnected position to be infinitely close to the same straight line.

[0191] It should be noted that a micro switch 8 is also installed on the base 3 , and the second swing arm 226 of the magnetic rotating member can also be used to trigger the micro switch 8 .

[0192] In the above embodiment, the lead-out direction of the electrical connection terminal 13 is perpendicular to the length direction of the movable contact 11 .

[0193] In other embodiments, the lead-out direction of the electrical connection terminal 13 is parallel to the length direction of the moving contact 11. A third swing arm 227 is provided in the middle of the side of the fixing member 221 close to the first armature 222. The third swing arm drives the moving contact 11 to switch between the closed position and the open position through the pushing member 5. This will be described in detail below. In this embodiment, the limiting portion also includes two limiting columns. In order to clearly describe the technical solution of this embodiment, the two limiting columns in this embodiment are named as the third limiting column 38 and the fourth limiting column 39. The third limiting column 38 and the fourth limiting column 39 are spaced apart from each other along the movement direction of the moving contact 11, and the sides facing each other constitute the fifth limiting surface and the sixth limiting surface respectively. See. Figure 28 to Figure 31 As shown, there is a gap between the third limiting column 38 and the fourth limiting column 39, the width of the gap is greater than the thickness of the first elastic member 6, and the portion of the first elastic member 6 close to its own end is located between the third limiting column 38 and the fourth limiting column 39; the fifth limiting surface is the circumferential surface of the third limiting column 38, and in the closed position, the fifth limiting surface abuts against the side of the first elastic member 6 close to the static contact member 12; the sixth limiting surface is the circumferential surface of the fourth limiting column 39, and in the disconnected position, the sixth limiting surface abuts against the side of the first elastic member 6 away from the static contact member 12.

[0194] Specifically, the vertical distance between the third limiting column 38 and the static contact member 12 is smaller than the vertical distance between the fourth limiting column and the static contact member 12. The first elastic member 6 is a bent spring structure, and both ends of the spring structure are formed with a bending portion 61, and the bending direction of the bending portion 61 is toward the dynamic 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 dynamic contact member 11 can move smoothly.

[0195] In some other embodiments, the bent portion 61 is hook-shaped, see Fig.29 As shown, in the closed position, the hook-shaped bent portion 61 hooks the third limiting column 38, so that the inner concave surface of the bent portion 61 abuts against the partial circumferential surface of the third limiting column 38 close to the fourth limiting column 39. Fig.31 As shown, in the disconnected position, the side of the first elastic portion 64 away from the static contact 12 abuts against a portion of the circumferential surface of the fourth limiting column 39 close to the third limiting column 38 .

[0196] Exemplarily, the third limiting column 38 and the fourth limiting column 39 may be formed integrally with the base 3 .

[0197] See also Fig.28 As shown, the relay can be a three-phase relay, see Fig.33 As shown, the relay can also be a single-phase relay.

[0198] For example, see Fig.32As shown, the pusher 5 is a frame structure, and the pusher 5 can be directly connected to the swing arm. The pusher 5 can drive multiple groups of moving contacts 11 to move at the same time.

[0199] See also Figure 34 to Figure 37 As shown, the second elastic member 7 includes a second fixed portion 72, the second fixed portion 72 is riveted to the dynamic contact member 11, the second fixed portion 72 is provided with a hollow portion, and the hollow portion is provided with second elastic portions 71 at both ends along the length direction of the second fixed portion 72, the second elastic portion 71 is arranged at an inclined angle to the second fixed portion 72, and the second elastic portion 71 has a contact surface, which abuts against the bracket.

[0200] See also Fig.36 As shown, when there are multiple second elastic members 7, the multiple second elastic members 7 are integrally formed, and the hollow portions in two adjacent second fixed portions 72 are connected, so that the area of ​​the portion where the two second elastic portions 71 are connected is smaller and has a certain deformation ability, thereby ensuring that the two moving contacts 11 can be relatively displaced and adaptively adjusted along the movement direction of the moving contacts 11, while also saving materials.

[0201] 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.

[0202] 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.

[0203] 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.

[0204] 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.

[0205] 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: The invention comprises a base, a moving contact assembly, a static contact piece and a magnetic circuit part; the moving contact assembly comprises a moving contact piece and a first elastic piece, the first elastic piece is connected to the moving contact piece, and the magnetic circuit part is used to drive the moving contact piece to switch between a closed position and an open position, in which the moving contact piece is attracted to the static contact piece, and in which the moving contact piece is disconnected from the static contact piece in the open position; The base is provided with a limiting portion, and the limiting portion is configured to enable the first elastic member to store energy along the movement direction of the moving contact when the moving contact is in the closed position and the open position, and to apply a force suitable for moving away from the static contact and a force suitable for moving toward the static contact to the moving contact, respectively.

2. The relay according to claim 1, characterized in that: The limiting portion has a first limiting surface and a second limiting surface arranged at intervals along the moving direction of the moving contact; the first limiting surface is configured to limit the first elastic member when the moving contact is in the closed position, and to cause the first elastic member to undergo elastic deformation, so as to apply a force to the moving contact that is suitable for moving away from the static contact; The second limiting surface is configured to limit the first elastic member when the movable contact is in the disconnected position, and to cause the first elastic member to undergo elastic deformation so as to apply a force suitable for the movable contact to move toward the static contact.

3. The relay according to claim 2, characterized in that: The limiting portion includes a first limiting column and a second limiting column; the first limiting column and the second limiting column are spaced apart from each other along the movement direction of the moving contact member, and their surfaces facing each other constitute the second limiting surface and the first limiting surface respectively.

4. The relay according to claim 2, characterized in that: The base is provided with a protrusion; the protrusion forms the first limit surface and the second limit surface on two sides opposite to each other along the movement direction of the moving contact member; the end of the first elastic member is provided with a guide hole, and the first elastic member is sleeved outside the protrusion through the guide hole.

5. The relay according to claim 4, characterized in that: Adapter plates are respectively arranged at both ends of the first elastic member, and the guide holes are arranged on the adapter plates.

6. The relay according to claim 5, characterized in that: At least two adapter plates are provided at each end of the first elastic member, and at least two of the adapter plates are sleeved on the outside of the protruding portion through the guide hole.

7. The relay according to claim 1, characterized in that: The first elastic member includes a first fixed portion and two first elastic portions; the first fixed portion is connected to the moving contact member; the two first elastic portions extend from both ends of the moving contact member along the extension direction of the moving contact member; the base has two groups of limiting portions corresponding to the two first elastic portions respectively.

8. The relay according to claim 7, characterized in that: It also includes a cover body, which is fixedly connected to the base and cooperates with the base to limit at least one of the first elastic parts from moving in a direction perpendicular to both the extension direction and the action direction of the dynamic contact.

9. The relay according to claim 8, characterized in that: The base restricts the first elastic member from moving along a direction parallel to an extending direction of the movable contact member.

10. The relay according to claim 9, characterized in that: The cover body is provided with a first abutment portion; the base is provided with a second abutment portion, a first retaining wall and a second retaining wall; the first abutment portion and the second abutment portion cooperate to abut at least one of the two first elastic portions along a direction perpendicular to both the extension direction and the action direction of the moving contact piece; the first retaining wall and the second retaining wall are used to abut against one side of the two first elastic portions away from each other along the extension direction of the moving contact piece.

11. The relay according to claim 10, characterized in that: The ends of the two first elastic parts are both provided with a bending part; the outer side surface of the bending part is suitable for abutting against the first retaining wall or the second retaining wall.

12. The relay according to any one of claims 1 to 11, characterized in that: It also includes a pusher; the movable contact assembly is integrally mounted on the pusher; the magnetic circuit portion can drive the pusher to reciprocate in a direction parallel to the action direction of the movable contact, so that the movable contact switches between the closed position and the open position; the first elastic member is supported on the base in a direction perpendicular to the extension direction of the movable contact and the action direction of the movable contact; The pushing member is supported by the first elastic member and the driving end of the magnetic circuit portion and is suspended on the base along a direction perpendicular to the extending direction of the moving contact member and the moving direction of the moving contact member.

13. The relay according to claim 12, characterized in that: Also comprising a second elastic member; The pushing member is provided with a third limiting surface and a fourth limiting surface opposite to each other along the movement direction of the moving contact member; one end of the second elastic member abuts against the third limiting surface, and the other end of the second elastic member presses the moving contact member toward the static contact member against the fourth limiting surface.

14. The relay according to claim 13, characterized in that: The second elastic member includes a second fixing portion and a second elastic portion, the second fixing portion is fixedly connected to the moving contact member, and the second elastic portion abuts against the third limiting surface.

15. The relay according to claim 14, 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 extension direction and the movement direction of the movable contacts and are connected in parallel; the number of the second elastic members is multiple and corresponds to each of the movable contacts one by one, and any two adjacent second elastic members are connected to each other; any two adjacent movable contacts are suitable for relative displacement along the movement direction of the movable contacts based on the elastic deformation ability of the connecting parts of the two second elastic members.

16. The relay according to claim 12, characterized in that: It also includes a third elastic member; the third elastic member is installed on the base, and the third elastic member is located on the side of the pushing member away from the static contact member. When the dynamic contact member is in the disconnected position, the third elastic member abuts against the pushing member to store energy and makes the dynamic contact member tend to move toward the closed position.

17. The relay according to claim 12, characterized in that: The magnetic circuit part includes a coil assembly and a magnetic rotating part. The coil assembly includes a coil body. The magnetic rotating part is driven by the magnetic force of the coil body to reciprocate around the first axis within a preset swing range to drive the moving contact to move to a closed position or an open position.

18. The relay according to claim 17, characterized in that: The relay also includes a transmission member; the transmission member has a first end and a second end, the first end is moved by the magnetic rotating member so that the portion between the first end and the second end rotates around a second axis relative to the base, and the second end can drive the moving contact to move to the closed position or the open position, wherein the second axis is parallel to the first axis; and 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.

19. The relay according to claim 18, characterized in that One of the pushing member and the transmission member is provided with a first toggle groove, and the other is provided with a first toggle portion cooperating with the first toggle groove; the first 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 transmission member swings back and forth, the first toggle portion abuts against the first limiting portion and the second limiting portion respectively.

20. The relay according to claim 19, characterized in that When the movable contact moves to the closed position, the first toggle portion abuts against the first limiting portion to form a first abutting position; when the movable contact moves to the disconnected position, the first toggle portion abuts against the second limiting portion to form a second abutting position; the axial direction of the coil body is parallel to the movement direction of the movable contact, and 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.

21. The relay according to claim 18, characterized in that A first swing arm is arranged on the side of the magnetic rotating member away from the coil body, and the first swing arm is provided with a receiving groove, and the first end of the transmission 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.

22. The relay according to claim 21, 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.

23. The relay according to claim 21, characterized in that Along the axial direction of the coil body, the first swing arm is located on a side of the first axis away from the static contact piece.

24. The relay according to claim 22, characterized in that The two ends of the coil body are respectively provided with a first yoke and a second yoke; the magnetic rotating member 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 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 magnetic rotating member and an end of the second yoke for mating with the magnetic rotating member, and the first axis is closer to a side where the static contact member is located than the second axis; The travel of the first armature and the second armature rotating toward the first yoke is equal to the travel 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.

25. The relay according to claim 23, characterized in that The two ends of the coil body are respectively provided with a first yoke and a second yoke; the magnetic rotating member 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 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 magnetic rotating member and an end of the second yoke for mating with the magnetic rotating member, 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.

26. The relay according to claim 17, characterized in that A second swing arm is provided on the side of the magnetic rotating part away from the coil body, and the second swing arm can drive the moving contact to move to the closed position or the open position. The position where the second swing arm is fixedly connected to the magnetic rotating part is located on the side of the first axis away from the static contact.

27. The relay according to claim 26, characterized in that A reinforcing portion is provided at least on one side of the position where the second swing arm is connected with the magnetic rotating member along the swinging direction thereof.

28. The relay according to claim 26, characterized in that One of the pushing member and the second swing arm is provided with a second toggle groove, and the other is provided with a second toggle portion cooperating with the second toggle groove; the second toggle groove has a third limiting portion and a fourth limiting portion arranged at intervals along the movement direction of the moving contact member; when the moving contact member moves to the closed position, the second toggle portion abuts against the third limiting portion to form a third abutting position; when the moving contact member moves to the disconnected position, the second toggle portion abuts against the fourth limiting portion to form a fourth abutting position; the axial direction of the coil body is parallel to the movement direction of the moving contact member, and the third abutting position and the fourth abutting position are located on the same straight line parallel to the axial direction of the coil body.

29. The relay according to claim 28, characterized in that The third limiting portion is provided with a first arc guide surface bent away from the fourth limiting portion, and the fourth limiting portion is provided with a second arc guide surface bent away from the third limiting portion, and the shape of the projection of the second toggle portion in the set plane is circular, wherein the set plane is a plane that is simultaneously parallel to the extension direction of the movable contact piece and the axial direction of the coil body; when the movable contact piece moves to the closed position, the second toggle portion abuts against the first arc guide surface and forms a third abutment position; when the movable contact piece moves to the disconnected position, the second toggle portion abuts against the second arc guide surface and forms a fourth abutment position.

30. The relay according to claim 18, characterized in that The relay further comprises a micro switch, and the micro switch is arranged in the base.

31. The relay according to claim 30, characterized in that The micro switch is suitable for being triggered by the magnetic rotating member or the transmission member.

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