Relay and ammeter

Abstract

The utility model discloses a relay and an electric meter. The relay comprises an accommodating piece, an electric control part and a guide piece, the electric control part comprises a static contact piece group and a movable contact unit, the static contact piece group is fixedly connected to the containing piece and comprises two static contact pieces arranged in the X-axis direction, the movable contact unit moves relative to the containing piece in the Y-axis direction and comprises a movable contact piece group corresponding to the static contact piece group, the movable contact piece group comprises a movable contact piece, the movable contact piece is provided with two movable contacts, and the movable contact piece is provided with two movable contacts. The two movable contacts are suitable for abutting against or being away from the corresponding static contact pieces in the Y-axis direction. The guide piece is fixedly connected to the accommodating piece and is positioned in the middle of the two movable contacts along the X-axis direction; the guide piece is in sliding fit with the movable contact unit only along a first straight line, and the first straight line extends in the Y-axis direction. The electric meter adopts the relay. Compared with a relay in the prior art, the relay in the technical scheme is lower in energy consumption.

Description

Technical Field

[0001] The present application relates to the field of relays, and in particular to a relay and an electric meter. Background Art

[0002] In the prior art, there is a relay, which includes a container, an electric control part and a driving part. The electric control part is used to control the on and off of an external circuit. The electric control part includes a static contact group and a moving contact unit. The static contact group is fixedly connected to the container and includes two static contacts arranged along the X-axis direction, and the two static contacts are used to connect the external circuit. The moving contact unit moves along the Y-axis direction relative to the container and includes a pusher, an elastic bracket and a moving contact group corresponding to the static contact group. The moving contact group includes a moving contact, which is suitable for contacting or moving away from the two static contacts along the Y-axis direction. When the moving contact contacts the two static contacts, the two static contacts are turned on; when the moving contact moves away from the two static contacts, the two static contacts are turned off. The elastic bracket is placed between the pusher and the moving contact group and is used for the moving contact group to be arranged thereon. The elastic bracket stores energy when the moving contact contacts the two static contacts, and releases energy when the moving contact moves away from the two static contacts. The driving part is used to drive the moving contact unit to move along the Y-axis direction. The driving part includes a magnetic circuit unit. The magnetic circuit unit includes a coil assembly and an armature assembly. When the magnetic circuit unit has a magnetic holding function, the magnetic circuit unit can adopt a swinging magnetic circuit unit, that is, the armature assembly swings relative to the coil assembly, and transmits the tangential component of the swing of the armature assembly to the pusher, driving the moving contact unit to move linearly. Specifically, the armature assembly is provided with a swing arm, and the swing arm abuts and cooperates with the pusher along the Y-axis direction. The swing arm serves as the output end of the driving part, and is used to drive the moving contact unit to move along the Y-axis direction. In the prior art, in order to ensure that the moving contact unit moves along the Y-axis direction, some technical solutions will provide a guide member. The guide member is arranged on both sides of the pusher along the X-axis direction. The guide member is fixed to the accommodating member and slidably cooperates with the pusher.

[0003] However, it is found in practice that in the above relay structure, the coil assembly consumes more energy. Utility Model Content

[0004] The purpose of the present application is to overcome the above-mentioned defects or problems in the background technology and to provide a relay and an electric meter, wherein the relay has lower energy consumption compared with the prior art.

[0005] In order to achieve the above purpose, the following technical solutions are adopted:

[0006] The first technical scheme relates to a relay, which includes an accommodating member, an electrical control part and a guide member; the electrical control part includes a static contact group and a moving contact unit, the static contact group is fixedly connected to the accommodating member and includes two static contacts arranged along the X-axis direction, the moving contact unit moves relative to the accommodating member along the Y-axis direction and includes a moving contact group corresponding to the static contact group, the moving contact group includes a moving contact, and the moving contact is provided with two moving contacts along the X-axis direction, and the two moving contacts are suitable for contacting or moving away from the corresponding static contacts along the Y-axis direction; the guide member is fixedly connected to the accommodating member and is located in the middle of the two moving contacts along the X-axis direction; the guide member only slides with the moving contact unit along a first straight line, and the first straight line extends along the Y-axis direction.

[0007] The second technical solution is based on the first technical solution, wherein the moving contact is further provided with a current bridge, the current bridge extends along the X-axis direction, and the two moving contacts are fixedly connected to the current bridge.

[0008] The third technical solution is based on the second technical solution, wherein a first projection of the guide member on the first projection plane intersects with a second projection of the movable contact member on the first projection plane, and the first projection plane is perpendicular to the Z-axis direction.

[0009] The fourth technical solution is based on the second technical solution, wherein the guide member is located in the middle of the moving contact unit along the Z-axis direction.

[0010] The fifth technical solution is based on the third technical solution, wherein the guide member extends along the Y-axis direction and passes through the moving contact unit.

[0011] The sixth technical solution is based on the fourth technical solution, wherein both ends of the guide member are fixedly connected to the accommodating member.

[0012] The seventh technical solution is based on the fifth technical solution, wherein the moving contact unit also includes a pushing member, an elastic bracket and a limiting member; the elastic bracket and the limiting member both correspond to the moving contact member group; the elastic bracket is located between the pushing member and the moving contact member group along the Y-axis direction; the limiting member is fixed relative to the pushing member and abuts against the moving contact member along the Y-axis direction when the moving contact member is away from the two static contacts to limit the distance between the moving contact member and the static contact member group.

[0013] The eighth technical solution is based on the seventh technical solution, wherein the dynamic contact unit also includes a connecting member, which corresponds to the limiting member and is integrally molded with the pushing member insert by injection molding, and the two ends of the connecting member along the Z-axis direction extend out of the pushing member respectively, and the limiting member is fixedly connected to both ends of the connecting member.

[0014] The ninth technical solution is based on the seventh technical solution, wherein the number of the moving contacts in the moving contact group is more than two, and each moving contact is arranged along the Z-axis direction.

[0015] The tenth technical solution is based on the ninth technical solution, wherein the electrically controlled part further comprises a first magnetic conductive group, and the moving contact unit further comprises a second magnetic conductive group; the first magnetic conductive group corresponds to the static contact group and is fixed relative to the static contact group, and the second magnetic conductive group corresponds to the moving contact group and is fixed relative to the moving contact group; when the moving contact contacts two static contacts, the second magnetic conductive group approaches or contacts the first magnetic conductive group along the Y-axis direction, so that the first magnetic conductive group and the second magnetic conductive group form a magnetic circuit based on the current passing through the moving contact.

[0016] The eleventh technical solution is based on the tenth technical solution, wherein the second magnetic conductor group includes second magnetic conductors, and the number of the second magnetic conductors is the same as and corresponds to the moving contacts in the corresponding moving contact group; the second magnetic conductor is provided with a main body and an extension part, the main body is fixedly connected to the back side of the overcurrent bridge and extends along the Z-axis direction, and the extension part extends from both ends of the main body along the Z-axis direction along the Y-axis direction toward the first magnetic conductor group.

[0017] The twelfth technical solution is based on the eleventh technical solution, wherein the number of moving contacts in the moving contact group is two, and the guide member is located between the current bridges of the two moving contacts along the Z-axis direction. In the second magnetic conductor, an extension portion close to the guide member along the Z-axis direction is provided with a first part and a second part along the X-axis direction, and the first part and the second part are spaced apart along the X-axis direction, and the guide member passes through the gap between the first part and the second part.

[0018] The thirteenth technical solution is based on the twelfth technical solution, wherein the first magnetic conductor group includes a first magnetic conductor, the first magnetic conductor is fixed to the accommodating member, the first magnetic conductor extends along the Z-axis direction and is located between two static contact members along the X-axis direction; the guide member passes through the first magnetic conductor.

[0019] The fourteenth technical solution is based on the thirteenth technical solution, wherein the accommodating member is provided with two blocking parts, and the two blocking parts are respectively located on both sides of the first magnetic conductor along the X-axis direction and between the two static contacts.

[0020] The fifteenth technical solution is based on any one of the seventh to fourteenth technical solutions, wherein the matching clearance between the limiting member and the guide member in the dynamic contact unit is the smallest.

[0021] The sixteenth technical solution is based on the seventh technical solution, and further includes an elastic member, which elastically abuts against the pushing member and stores energy when the moving contact moves away from the static contact group, and releases energy when the moving contact moves toward the static contact group.

[0022] The seventeenth technical solution is based on the sixteenth technical solution, wherein the guide member is provided with a protrusion at a position away from the static contact member group, and the elastic member is sleeved on the guide member, with one end thereof abutting against the protrusion and the other end elastically abutting against the pushing member.

[0023] The eighteenth technical solution is based on the sixteenth technical solution, wherein when the moving contact member contacts two stationary contacts along the Y-axis direction, the elastic member applies an elastic force toward the stationary contact group to the moving contact unit.

[0024] The nineteenth technical solution is based on the seventh technical solution, and further includes a separator group, which corresponds to the static contact group and is provided with two separators, the two separators are fixed to the accommodating member and are located on both sides of the static contact group along the X-axis direction, and the separators are made of high temperature resistant insulating material.

[0025] The twentieth technical solution is based on the seventh technical solution, which also includes a driving part, which is used to drive the moving contact unit to move along the Y-axis direction and includes a magnetic circuit unit, and the magnetic circuit unit includes a coil assembly and an armature assembly. The coil assembly is fixed to the accommodating part and drives the armature assembly to rotate around a first rotating axis extending along the Z-axis direction; the output end of the driving part abuts against the pushing member along the Y-axis direction to convert the rotation of the armature assembly into a linear motion of the pushing member along the Y-axis direction.

[0026] The twenty-first technical solution is based on the twentieth technical solution, wherein the magnetic circuit unit and the moving contact unit are arranged at intervals along the X-axis direction.

[0027] The twenty-second technical solution is based on the twentieth technical solution, wherein the driving part also includes a rotating member, which rotates around a second rotating axis extending along the Z-axis direction and is provided with a first end and a second end on both sides of the second rotating axis, and the second end is the output end of the driving part; the armature assembly is provided with two first abutting surfaces opposite to or opposite to each other, and the first end is suitable for abutting the two first abutting surfaces; the pushing member is provided with two second abutting surfaces opposite to or opposite to each other along the Y-axis direction, and the second end is suitable for abutting the two second abutting surfaces.

[0028] The twenty-third technical solution is based on the twenty-second technical solution, wherein the pushing member is provided with a pushing cavity, two second abutment surfaces are arranged on two opposite walls of the pushing cavity along the Y-axis direction, the second end portion extends into the pushing cavity and is provided with two protrusions along the Z-axis direction, the two protrusions are arranged at intervals along the Z-axis direction, and the guide member passes through the interval between the two protrusions.

[0029] The twenty-fourth technical solution is based on the twenty-second technical solution, wherein, when the dynamic contact member abuts against two static contacts, the projection of the contact point between the second end portion and the second abutting surface on the first projection surface is located within the first projection.

[0030] The twenty-fifth technical solution is based on the twenty-second technical solution, and it also includes a micro switch, which is provided with a dynamic spring, and the pushing member, the rotating member or the armature assembly is suitable for pushing against the dynamic spring to turn the micro switch on or off.

[0031] The twenty-sixth technical solution relates to an electric meter, which includes the relay described in any one of the first to twenty-fifth technical solutions.

[0032] Compared with the prior art, the above solution has the following beneficial effects:

[0033] In the prior art, the guide members are arranged on both sides of the pushing member along the X-axis direction. The applicant has found through observation, experimentation and research that the reason why the coil assembly of the relay in the prior art has a large energy consumption is that once the two guide members arranged in parallel along the X-axis direction in the prior art are not parallel to each other, the pushing member is prone to jamming when moving linearly along the Y-axis direction. Therefore, the driving part outputs a larger driving force to drive the pushing member to switch positions; in order to output a larger driving force, the energy consumption of the coil assembly is relatively large. In the first technical solution, the guide member only slides with the moving contact unit along the first straight line, and the first straight line extends along the Y-axis direction. Therefore, when the moving contact unit slides with the guide member, jamming will not occur due to the non-parallelism of the two guide members. Therefore, the driving force required to be output by the driving part is smaller than that of the prior art, and the energy consumption of the coil assembly is lower than that of the prior art. The guide member is arranged to be located in the middle of the two moving contacts along the X-axis direction. The torque formed by the reaction force of the static contact group on the moving contact can also correct the posture of the moving contact in a more balanced manner, so that the two moving contacts of the moving contact remain arranged along the X-axis direction, and the two moving contacts can apply the same force to the corresponding static contacts.

[0034] In the prior art, the guides are arranged on both sides of the pusher along the X-axis direction, and the moving contact also extends along the X-axis direction, so the guides need to be placed outside the moving contact along the X-axis direction, which increases the size of the relay along the X-axis direction, so the structure is not compact and occupies a large space. In the first technical solution, the guide is located in the middle of the two moving contacts along the X-axis direction, which reduces the size of the relay along the X-axis direction, so the structure is more compact and occupies a smaller space.

[0035] In the first technical solution, the guide member slidingly cooperates with the movable contact unit, which can be interpreted as sliding cooperation with the movable contact member, and can also be interpreted as sliding cooperation with other parts of the movable contact unit.

[0036] The second technical solution is a specific implementation method of the first technical solution. The overcurrent bridge extends along the X-axis direction, and the two moving contacts are fixedly connected to the overcurrent bridge. At this time, the safety distance between the moving contact and the static contact of the relay is twice the actual distance between the moving contact and the static contact. Therefore, the relay has higher safety and stronger voltage resistance.

[0037] In the third technical solution, the first projection and the second projection intersect, so the guide member guides the moving contact member according to the moving path of the moving contact member, which is more conducive to improving the stability of the movement of the moving contact member.

[0038] In the fourth technical solution, the guide member is located in the middle of the moving touch unit along the Z-axis direction, which can better guide the moving touch unit, prevent the moving touch unit from tilting up and down, and improve the stability of the moving touch unit's movement.

[0039] In the fifth technical solution, the guide member passes through the moving contact unit along the Y-axis direction. Therefore, the guide member not only has a guiding function along the Y-axis direction, but can also position the moving contact unit in the direction perpendicular to the Y-axis direction (i.e., the X-axis direction and the Z-axis direction), so that the relative position of the moving contact and the two static contacts is more certain, the contact is more reliable, the contact resistance is smaller, and the heat generated by the relay is smaller.

[0040] In the sixth technical solution, both ends of the guide member along the Y-axis direction are fixed to the accommodating member, so that the guide member can leave more sufficient space along the Y-axis direction for the movable contact unit and the movement of the movable contact unit along the Y-axis direction.

[0041] In the seventh technical solution, the elastic bracket is arranged between the pusher and the moving contact group, and can provide elastic force to the moving contact toward the static contact group after the moving contact unit experiences an overtravel, so that the moving contact better contacts the two static contacts, and can also generate additional repulsive force when the moving contact is separated from the static contact group, helping the moving contact to stay away from the static contact group. By setting a limiter, it can be ensured that the distance between the moving contact and the static contact group meets the design requirements.

[0042] In the eighth technical solution, the connecting member and the pushing member insert are integrally formed by injection molding, so that the limiting member is easier to fix relative to the pushing member, and the limiting member has stronger rigidity and better limiting effect on the moving contact member.

[0043] In the ninth technical solution, the number of moving contacts is more than two, and they are all suitable for contacting two static contacts. Therefore, each moving contact is connected in parallel when contacting two static contacts, which can increase the load capacity of the relay and reduce the contact resistance between the moving contact and the static contact. Each moving contact is arranged along the Z-axis direction, and the moving contact extends along the X-axis direction, and the moving contact moves along the Y-axis direction, so that the relay can make full use of all directions, the structure is more compact, and the space occupied is smaller.

[0044] In the tenth technical solution, the first magnetic conductive group and the static contact group are relatively fixed, and the second magnetic conductive group and the moving contact group are relatively fixed. The first magnetic conductive group and the second magnetic conductive group form a magnetic circuit based on the current passing through the moving contact, which can form a magnetic attraction between the first magnetic conductive group and the second magnetic conductive group. Therefore, when the relay is impacted by a large fault current, the moving contact group and the static contact group are less likely to disengage, thereby avoiding the generation of destructive arcs that damage the relay.

[0045] In the eleventh technical solution, the number of the second magnetic conductors and the moving contacts in the moving contact group is the same, so a magnetic circuit can be formed around each moving contact, making it difficult for each moving contact to be separated from the static contact group.

[0046] In the twelfth technical solution, the guide member is located between the current bridges of the two moving contacts along the Z-axis direction, so that the guiding effect of the guide member on each moving contact is the same along the Z-axis direction, and each moving contact is less likely to deflect up and down. The guide member passes through the gap between the first part and the second part, on the one hand, the second magnetic conductor gives way to the guide member, and on the other hand, a magnetic circuit can be formed on both sides of the guide member along the X-axis direction to ensure magnetic efficiency, and the moving contact is subjected to the same force on both sides of the guide member along the X-axis direction, so that the moving contact is less likely to deflect left and right.

[0047] In the thirteenth technical solution, the first magnetic conductor group is provided with the first magnetic conductor, which is more convenient to install. The guide member runs through the first magnetic conductor, which can ensure the relative position of the first magnetic conductor, the guide member and the accommodating member.

[0048] In the fourteenth technical solution, a barrier portion is provided on the accommodating member to separate the first magnetic conductor from the static contacts on both sides, so that the two static contacts are less likely to be short-circuited through the first magnetic conductor located in the middle.

[0049] In the fifteenth technical solution, the matching clearance between the guide and the limiter is the smallest, which can make the guiding effect of the guide most obvious at the limiter along the Y-axis direction. Since the movement of the moving contact is synchronized with the limiter, the guiding effect of the guide at the limiter can also play a better guiding role for the moving contact. At the same time, the matching clearance between the other parts of the moving contact unit and the guide is larger than the matching clearance between the limiter and the guide, which can allow the moving contact unit to have a certain degree of freedom in the Y-axis direction except for the limiter. Even if there is a slight deflection, it can be corrected by the guiding effect of the guide on the limiter to ensure that the moving contact is in the correct posture when it contacts the two static contacts. In particular, when the pusher is driven by the swinging magnetic circuit unit to move linearly along the Y-axis direction, the radial component of the rotation of the armature assembly will act on the pusher through the friction force, which will cause the moving contact unit to deflect slightly. By allowing the moving contact unit to have a certain degree of freedom in the Y-axis direction except for the limiter, the above-mentioned friction can further avoid the movement of the moving contact unit along the Y-axis direction. Jamming.

[0050] In the sixteenth technical solution, the elastic member stores energy due to deformation when the moving contact group moves in the direction away from the static contact group, and releases energy due to restoring the deformation when the moving contact group moves in the direction close to the static contact group. This can better help the moving contact unit to start from a position away from the static contact group and approach the static contact group, which is beneficial to increase the movement stroke of the moving contact, and therefore also helps to increase the safety distance between the moving contact and the static contact.

[0051] In the seventeenth technical solution, the elastic member is sleeved on the guide member, one end of the elastic member abuts against the protrusion, and the other end elastically abuts against the pushing member, so that the structure is more compact and occupies less space.

[0052] In the eighteenth technical solution, when the moving contact contacts the two static contacts along the Y-axis direction, the elastic member applies an elastic force toward the static contact group to the moving contact unit, which can improve the stability of the moving contact and the two static contacts in the closed state, and further improve the short-circuit resistance, that is, improve the ability of the moving contact to avoid being disengaged from the static contact when the relay is subjected to a large fault current.

[0053] Since the current directions of the two moving contacts are opposite, when the moving contact is disconnected from the static contact group, the arc generated between the two moving contacts and the corresponding static contact will propagate outward along the X-axis direction due to the repulsive Lorentz magnetic force. In the nineteenth technical solution, by arranging separators on both sides of the static contact group along the X-axis direction, and the separators are made of high-temperature resistant insulating materials, it is possible to prevent the arc overflowing laterally from damaging other parts of the relay.

[0054] The twentieth technical solution is a specific implementation method using a swinging magnetic circuit unit. The use of a swinging magnetic circuit unit can effectively amplify the tangential motion stroke of the armature assembly, which is beneficial to increase the safety distance between the moving contact and the static contact.

[0055] In the twenty-first technical scheme, the magnetic circuit unit and the moving contact unit are spaced apart along the X-axis direction, which can prevent the relay from being too large in the movement direction of the moving contact unit (Y-axis direction), so that the structure is more compact and occupies less space; at the same time, it can prevent the magnetic circuit unit from affecting the linear movement of the moving contact unit along the Y-axis direction, thereby ensuring a larger safety distance between the moving contact and the static contact.

[0056] In the twenty-second technical solution, the tangential component of the movement of the armature assembly is transmitted to the pushing member through the rotating member. On the one hand, it is convenient to adjust the interval between the magnetic circuit unit and the moving contact unit along the X-axis direction. On the other hand, compared with the technical solution of directly extending the swing arm from the armature assembly, the ratio of the resistance arm to the power arm is smaller, and the required magnetic driving force is smaller.

[0057] In the twenty-third technical solution, the second end extends out of the pushing cavity, so that the pusher and the rotating member can be more compactly matched. By providing two protrusions spaced apart along the Z-axis direction, the guide member can be made to give way.

[0058] In the twenty-fourth technical solution, when the moving contact member abuts against two static contacts, the projection of the contact point between the second end and the second abutting surface on the first projection plane is located within the first projection, which means that when the moving contact member abuts against the two static contacts, the force point of the moving contact unit is within the width range of the guide member, so the moving contact unit will not generate a deflection torque, which can ensure that the moving contact member correctly abuts against the two static contacts along the Y-axis direction.

[0059] In the twenty-fifth technical solution, by setting a micro switch, the state of the relay can be transmitted to the external relay state sensing circuit. At the same time, the dynamic spring of the micro switch can also provide thrust for the movement of the dynamic contact unit close to the static contact group, so that the dynamic contact and the two static contacts are closed faster.

[0060] The electric meter in the twenty-sixth technical solution has the technical effects corresponding to the technical solution it quotes. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solution of the embodiment, the following briefly introduces the drawings required for use:

[0062] Figure 1 is a three-dimensional exploded view of a relay in the embodiment;

[0063] Figure 2 is a top view of the housing and the guide member in the embodiment;

[0064] Figure 3 for Figure 2 AA section view;

[0065] Figure 4 is a top view of a relay in the embodiment;

[0066] Figure 5 for Figure 4 BB section view;

[0067] Figure 6 It is a structural schematic diagram of the electric control part in the embodiment;

[0068] Figure 7 is a three-dimensional diagram of the first magnetic conductive body group in the embodiment;

[0069] Figure 8 It is a three-dimensional diagram of the pushing member and the connecting member in the embodiment;

[0070] Fig. 9 It is a three-dimensional exploded view of the movable contact member group, the second magnetic conductive member group and the elastic bracket in the embodiment;

[0071] Fig.10 A three-dimensional diagram of a position limiting member in an embodiment;

[0072] Fig.11 It is a front view of the electric control part in the embodiment;

[0073] Fig.12 for Fig.11 CC section view;

[0074] Fig.13 A top view of the driving part when the relay is in the off state in the embodiment;

[0075] Fig.14 A top view of the driving part when the relay is in the conducting state in the embodiment;

[0076] Fig.15 is a three-dimensional diagram of a rotating member in an embodiment;

[0077] Fig.16 A three-dimensional diagram of a micro switch in an embodiment;

[0078] Fig.17 Schematic diagram of the internal structure when the relay is in the off state in the embodiment;

[0079] Fig.18 for Fig.17 DD section view;

[0080] Fig.19 Schematic diagram of the internal structure when the relay is in the conducting state in the embodiment;

[0081] Fig. 20 for Fig.19 EE section view;

[0082] Fig.21 for Fig.19 FF section view.

[0083] Description of main reference numerals:

[0084] 1. Relay; 2. Accommodating member; 3. Guide member; 4. Electric control part; 5. Elastic member; 6. Separator group; 7. Driving part; 8. Micro switch; 9. Shielding cover; 10. Shell; 11. Cover; 12. Slot; 13. Groove; 14. First shaft hole; 15. Second shaft hole; 16. Blocking part; 17. Pressing part; 18. Protrusion; 19. Static contact group; 20. First magnet group; 21. Moving contact unit; 22. Static contact; 23. Static contact point; 24. First magnet; 25. Magnetic body; 26. Insertion part; 27. First hole; 28. Pushing member; 29. ​​Connecting member; 30. Moving contact group; 31. Second magnet group; 32. Elastic bracket; 33. Limiting member; 34. Pushing cavity; 35. Second abutting surface; 36. Second hole ; 37. Connecting column; 38. Connecting end; 39. Third hole; 40. Moving contact; 41. Overcurrent bridge; 42. Moving contact; 43. Second magnetic conductor; 44. Main body; 45. Extension portion; 46. First part; 47. Second part; 48. Frame; 49. Elastic support portion; 50. Fourth hole; 51. Connecting hole; 52. Elastic arm; 53. Limiting portion; 54. Connecting portion; 55. Fifth hole; 56. Avoidance hole; 57. Assembly hole; 58. Partition; 59. Magnetic circuit unit; 60. Rotating member; 61. Coil assembly; 62. Armature assembly; 63. First rotating shaft; 64. Connecting groove; 65. First abutting surface; 66. Second rotating shaft; 67. First end portion; 68. Second end portion; 69. Pushing portion; 70. Protruding portion; 71. Moving spring. DETAILED DESCRIPTION

[0085] In the claims and the specification except for the embodiments, the terms "X-axis direction", "Y-axis direction" and "Z-axis direction" only mean that the feature with one of the above directions is perpendicular to the feature with another direction, and do not require that they must be implemented according to the "X-axis direction", "Y-axis direction" and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction is perpendicular to the Y-axis direction and the Z-axis direction. Among them, the X-axis direction can be divided into left and right, the Y-axis direction can be divided into front and back, and the Z-axis direction can be divided into top and bottom.

[0086] In the claims and the description, unless otherwise defined, the terms "first", "second" or "third", etc. are intended to distinguish different objects rather than to describe a specific order.

[0087] In the claims and the specification, unless otherwise defined, terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings and are only for the convenience of simplifying the description and do not imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction.

[0088] In the claims and the specification, unless otherwise defined, the terms "fixed connection", "fixed connection" or "relatively fixed" should be understood in a broad sense, that is, any connection method in which there is no displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0089] In the claims and the description, unless otherwise defined, the terms "includes", "has" and their variations mean "including but not limited to".

[0090] In the claims and the specification, unless otherwise defined, the term "provided with" means that the technical feature located thereafter is a part of the technical feature located therefor.

[0091] In the claims and the specification, unless otherwise defined, the term "group" means a collection, and unless otherwise defined, it may include one element or multiple elements. For example, a "moving contact group" may include one moving contact or more than two moving contacts.

[0092] In the claims and description, unless otherwise specified, the term "the guide member only slides with the moving contact unit along the first straight line" means that when there is only one guide member, the guide member extends along the Y-axis direction; and when there are more than two guide members, each guide member is arranged only along the Y-axis direction.

[0093] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings.

[0094] Example

[0095] Relay 1 is used to receive electrical signals to control the on and off of an external circuit. Specifically, the relay 1 in this embodiment is a magnetic latching relay, which controls the on and off of an external circuit by receiving a pulse electrical signal. In this embodiment, the external circuit is single-phase alternating current. Relay 1 controls the on and off of the single-phase alternating current.

[0096] See also Figure 1 , Figure 1 Schematic diagram showing the structure of the relay 1 in this embodiment. Figure 1As shown, the relay 1 includes a receiving member 2, a guide member 3, an electric control part 4, an elastic member 5, a partition member group 6, a driving part 7, a micro switch 8 and a shielding cover 9.

[0097] See also Figures 1 to 5 , Figures 1 to 5 The container 2 in this embodiment is shown. The container 2 is used to accommodate the guide member 3, the electric control part 4, the elastic member 5, the partition member group 6, the driving part 7, the micro switch 8 and the shielding cover 9. As in the prior art, the container 2 is made of insulating material, and in this embodiment, it is made of plastic injection molding.

[0098] like Figure 1 As shown, the receiving component 2 includes a shell 10 and a cover 11 .

[0099] The housing 10 is used to accommodate and install the guide member 3, the electric control part 4, the elastic member 5, the partition member group 6, the driving part 7, the micro switch 8 and the shielding cover 9. Figure 2 As shown, the housing 10 is provided with a cavity that opens upward. The cavity can be divided into a left cavity and a right cavity. The left cavity is provided with slots 12 at the front and rear ends along the Y-axis direction. The slots 12 are open upward and are used to install the guide member 3. A groove 13 is also provided behind the slot 12 at the front end of the left cavity. Figure 3 As shown, the groove 13 is located on the bottom wall of the housing 10. The groove 13 is used to install the first magnetic conductor group 20 (which will be described in detail later). Figure 2 As shown, a first shaft hole 14 is provided in the middle of the left cavity, and a second shaft hole 15 is provided in the middle of the cavity. Two baffles 16 are provided on the left and right sides of the groove 13 along the X-axis direction, and the baffles 16 extend along the Z-axis direction. A space for installing the first magnetic conductive body group 20 is defined between the two baffles 16. Figure 5 As shown, the cover 11 is used to cover the opening of the cavity of the housing 10 and is fixed to the housing 10. In this embodiment, the cover 11 is snap-fitted to the housing 10. The cover 11 is provided with two pressing portions 17 at positions corresponding to the two slots 12 of the housing 10. The pressing portions 17 extend downward from the cover 11 and are used to press the end of the guide member 3 installed in the slot 12 so that the guide member 3 and the receiving member 2 are relatively fixed.

[0100] See also Figure 2 , Figure 2The guide member 3 in this embodiment is shown. The guide member 3 is used to provide motion guidance for the moving contact unit 21 (described in detail later) in the electric control part 4, so that the moving contact unit 21 moves along the Y-axis direction. In this embodiment, the guide member 3 is made of metal. In this embodiment, the guide member 3 only extends along the first straight line and is in the shape of a rod, and the first straight line extends along the Y-axis direction. Both ends of the guide member 3 are installed in the slot 12 and are pressed by the pressing part 17, so that the guide member 3 is fixed to the accommodating member 2. A protrusion 18 is provided at the rear part of the guide member 3 (away from the groove 13 along the Y-axis direction). The protrusion 18 is used for one end of the elastic member 5 to abut. In this patent, when there are multiple guide members 3, they are also arranged only along the first straight line. For example, it is also allowed to divide the guide member 3 in this embodiment into two sections, one of which extends from front to back and the other extends from back to front.

[0101] See also Figure 6 , Figure 6 FIG. 4 shows the electric control part 4 in this embodiment. The electric control part 4 is used to control the on and off of the external circuit. Figure 6 As shown, the electric control part 4 includes a static contact group 19 , a first magnetic conductive body group 20 and a moving contact unit 21 .

[0102] See also Figure 6 , Figure 6 FIG. 1 shows the static contact assembly 19 in this embodiment. Figure 6 As shown, the static contact group 19 is fixed to the accommodating member 2 and is used to electrically connect to the external circuit. The static contact group 19 includes two static contacts 22 arranged along the X-axis direction. One of the two static contacts 22 is used to connect the power supply, and the other is used to connect the load. Each static contact 22 is provided with a static contact 23, and the static contact 23 is arranged backward along the Y-axis direction. Each static contact 22 has two static contacts 23. The two static contacts 23 are arranged along the Z-axis direction. In this embodiment, the two baffles 16 are located between the two static contacts 22 along the X-axis direction.

[0103] See also Figures 5 to 7 , Figures 5 to 7 FIG. 2 shows a first magnetic conductive member group 20 in this embodiment. The first magnetic conductive member group 20 is arranged corresponding to the static contact member group 19. Figure 7 As shown, the first magnetic conductor group 20 includes a first magnetic conductor 24. The first magnetic conductor 24 is provided with a magnetic conductor body 25 and an insertion portion 26. The magnetic conductor body 25 extends along the Z-axis direction and is provided with a first hole 27. The first hole 27 is through along the Y-axis direction. The insertion portion 26 is located below the magnetic conductor body 25 along the Z-axis direction and extends downward. Figure 5 As shown, the inserting portion 26 is inserted into the groove 13 to position the first magnetic conductor 24 along the X-axis direction and the Y-axis direction. The first hole 27 is penetrated by the guide member 3 along the Y-axis direction. Figure 6As shown, the first magnetizer group 20 is located between the two baffles 16 along the X-axis direction. The first magnetizer 24 is also fixed to the housing 10 by dispensing glue, so that the first magnetizer group 20 and the stationary contact group 19 are relatively fixed.

[0104] See also Figure 6 , Figure 6 FIG. 2 shows the moving contact unit 21 in this embodiment. The moving contact unit 21 moves relative to the receiving member 2 along the Y-axis direction. Figure 6 As shown, the movable contact unit 21 includes a pushing member 28 , a connecting member 29 , a movable contact member group 30 , a second magnetic conductive member group 31 , an elastic bracket 32 ​​and a limiting member 33 .

[0105] See also Figure 8 , Figure 8 The pusher 28 and the connector 29 in this embodiment are shown. Figure 8 As shown, the rear part of the push member 28 along the Y-axis direction is provided with a push cavity 34, and the push cavity 34 opens to the right along the X-axis direction. Two walls of the push cavity 34 opposite to each other along the Y-axis direction are provided with two second abutment surfaces 35, and the two second abutment surfaces 35 are arranged opposite to each other along the Y-axis direction. In other embodiments, the two second abutment surfaces 35 can also be arranged in a manner opposite to each other. The push member 28 is provided with a second hole 36 along the Y-axis direction, and the second hole 36 penetrates the push member 28 along the Y-axis direction. The front surface of the push member 28 along the Y-axis direction is provided with two connecting columns 37, and the two connecting columns 37 are arranged along the Z-axis direction, and the second hole 36 is located between the two connecting columns 37. The connecting column 37 extends forward along the Y-axis direction. The connecting member 29 and the push member 28 are molded as a whole by insert injection molding. The connecting member 29 is perpendicular to the Y-axis direction and extends along the Z-axis direction. The two ends of the connecting member 29 along the Z-axis direction extend out of the push member 28 to form two connecting ends 38. The connecting member 29 is also provided with a third hole 39 in the middle portion along the Z-axis direction (at Fig.12 ), the third hole 39 passes through the connecting piece 29 along the Y-axis direction and is connected to the second hole 36.

[0106] See also Fig. 9 , Fig. 9 FIG. 3 shows the movable contact member group 30, the second magnetic conductive member group 31 and the elastic bracket 32 ​​in this embodiment. Fig. 9As shown, the moving contact group 30 is arranged correspondingly to the static contact group 19. The moving contact group 30 includes a moving contact 40. In this embodiment, the number of moving contacts 40 in the moving contact group 30 is two, and the two moving contacts 40 are arranged at intervals along the Z-axis direction. Each moving contact 40 is provided with a current bridge 41 and two moving contacts 42. The current bridge 41 extends along the X-axis direction, and the two moving contacts 42 are fixed to the current bridge and arranged along the X-axis direction. The two moving contacts 42 are suitable for contacting or moving away from the corresponding static contact 22 along the Y-axis direction. In this embodiment, the moving contact 42 and the static contact 23 are arranged correspondingly along the Y-axis direction. When the moving contact 42 moves away from the corresponding static contact 23 along the Y-axis direction, the moving contact 40 moves away from the two static contacts 22, the two static contacts 22 cannot be conductive with each other, and the external circuit is turned off. When the moving contact 42 contacts the corresponding stationary contact 23 along the Y-axis direction, the moving contact 40 contacts the two stationary contacts 22 , the two stationary contacts 22 are electrically connected through the moving contact 40 , and the external circuit is turned on.

[0107] like Fig. 9 As shown, the second magnet group 31 is arranged corresponding to the moving contact group 30. The second magnet group 31 includes two second magnets 43, and the two second magnets 43 are arranged corresponding to the two moving contacts 40. Specifically, each second magnet 43 is provided with a main body 44 and two extensions 45. The main body 44 extends along the Z-axis direction and is fixed to the back side of the current bridge 41 of the corresponding moving contact 40. The two extensions 45 extend from both ends of the main body 44 along the Z-axis direction along the Y-axis direction toward the first magnet group 20. In this embodiment, among the two extensions 45 of each second magnet 43, the extension 45 close to the other second magnet 43 is provided with a first part 46 and a second part 47 along the X-axis direction, and the first part 46 and the second part 47 are arranged at intervals along the X-axis direction. As shown Figure 6 As shown, when the movable contact 40 abuts against the two stationary contacts 22 , the extending portion 45 approaches or abuts against the first magnetic conductive body group 20 .

[0108] like Fig. 9 As shown, the elastic bracket 32 ​​is arranged corresponding to the movable contact group 30. The elastic bracket 32 ​​is provided with a frame body 48 and two elastic support parts 49. The frame body 48 is provided with a fourth hole 50 in the middle part along the Z-axis direction. The frame body 48 is provided with two connecting holes 51 along the Z-axis direction. The fourth hole 50 is located between the two connecting holes 51 along the Z-axis direction. The two connecting holes 51 are suitable for corresponding connecting columns 37 to pass through. The two elastic support parts 49 are arranged corresponding to the two movable contacts 40 in the movable contact group 30. The two elastic support parts 49 are arranged along the Z-axis direction. Each elastic support part 49 is provided with two elastic arms 52, and the two elastic arms 52 extend from both sides of the frame body 48 along the X-axis direction, and at least partially tilt away from the pusher 28 along the Y-axis direction. The free ends of the two elastic arms 52 are respectively fixed to the back of the overcurrent bridge 41, and the positions fixed to the overcurrent bridge 41 are respectively located on the back of the two movable contacts 42 along the Y-axis direction.

[0109] See also Fig.10 , Fig.10 FIG. 2 shows a limit member 33 in this embodiment. The limit member 33 is arranged corresponding to the connecting member 29. Fig.10 As shown, the limiting member 33 is provided with a limiting portion 53 and two connecting portions 54. The limiting portion 53 extends along the Z-axis direction and is perpendicular to the Y-axis direction. A fifth hole 55 is provided in the middle of the limiting portion 53. The fifth hole 55 penetrates the limiting portion 53 along the Y-axis direction. The limiting portion 53 is also provided with an avoidance hole 56 for each extension portion 45 of the second magnetic conductive body group 31 to extend along the Y-axis direction. The connecting portions 54 extend backward along the Y-axis direction from both ends of the limiting portion 53 along the Z-axis direction, and each connecting portion 54 is provided with an assembly hole 57, which is adapted to and suitable for fixed connection with the connecting end 38 of the connecting member 29.

[0110] See also Figure 11 to Figure 12 , Figure 11 to Figure 12 FIG. 2 shows the moving contact unit 21, the guide member 3 and the elastic member 5 in this embodiment. Fig.11 As shown, the guide member 3 is located between the first portion 46 and the second portion 47 of the same extension portion 45 along the X-axis direction. The guide member 3 is also located between the current bridges 41 of the two moving contacts 40 of the same moving contact group 30 along the Y-axis direction. The guide member 3 is located in the middle of the two moving contacts 42 along the X-axis direction, and the first projection of the guide member 3 on the first projection plane perpendicular to the Z-axis direction intersects with the second projection of the moving contact 40 on the first projection plane. In this embodiment, the portion where the first projection intersects the second projection is in the middle of the second projection along the X-axis direction. The guide member 3 is also located in the middle of the moving contact unit 21 along the Z-axis direction.

[0111] like Fig.12 As shown, in this embodiment, the connecting column 37 is correspondingly inserted into the connecting hole 51, and the moving contact 40 is fixed to the elastic support portion 49 of the elastic bracket 32, so that the elastic bracket 32 ​​is located between the pushing member 28 and the moving contact group 30, and stores energy when the moving contact 40 abuts against the two static contacts 22, and releases energy when the moving contact 40 is away from the two static contacts 22. In this embodiment, the two connecting holes 51 of the limiting member 33 are adapted and fixed to the corresponding two connecting ends 38, so that the limiting member 33 is fixed relative to the pushing member 28. When the moving contact 40 is away from the two static contacts 22, the limiting portion 53 of the limiting member 33 abuts against the current bridge 41 of the two moving contacts 40 along the Y-axis direction to limit the distance between the moving contact 40 and the static contact group 19.

[0112] like Fig.12As shown, in this embodiment, the guide member 3 penetrates the moving contact unit 21 along the Y-axis direction and slides with the moving contact unit 21 along the first straight line. Specifically, the guide member 3 penetrates the second hole 36 and the pushing cavity 34 on the pushing member 28, the third hole 39 on the connecting member 29, the fourth hole 50 on the elastic bracket 32, the interval between the first part 46 and the second part 47 of the two extensions 45, the interval between the current bridges 41 of the two moving contacts 40, and the fifth hole 55 on the limiter 33. In this embodiment, the matching clearance between the fifth hole 55 and the guide member 3 is smaller than the matching clearance between the second hole 36, the third hole 39 and the fourth hole 50 and the guide member 3.

[0113] like Fig.12 As shown, in this embodiment, the elastic member 5 is a spring, one end of the elastic member 5 abuts against the protrusion 18, and the other end of the elastic member 5 elastically abuts against the push member 28. The elastic member 5 stores energy when the moving contact member 40 moves away from the static contact member group 19, and releases energy when the moving contact member 40 moves toward the static contact member group 19.

[0114] See also Figure 1 , Figure 1 4 shows the separator group 6 in this embodiment. Figure 1 As shown, the separator group 6 is arranged corresponding to the static contact group 19. The separator group 6 is provided with two separators 58. The two separators 58 are fixed to the accommodating member 2 and are located on both sides of the static contact group 19 along the X-axis direction. Each separator 58 is in the shape of a sheet perpendicular to the X-axis direction, and its material is a high temperature resistant insulating material.

[0115] See also Figures 13 to 15 , Figures 13 to 15 FIG. 2 shows a driving part 7 in this embodiment. The driving part 7 is used to drive the moving contact unit 21 to move linearly along the Y-axis direction. Fig.13 As shown, in this embodiment, the driving part 7 includes a magnetic circuit unit 59 and a rotating member 60.

[0116] like Fig.13 As shown, the magnetic circuit unit 59 includes a coil assembly 61 and an armature assembly 62. The coil assembly 61 is fixedly connected to the housing 10, and is provided with two magnetic drive ends. The coil assembly 61 reverses the polarity temporarily formed by the two magnetic drive ends by receiving a pulse electrical signal. In this embodiment, the two magnetic drive ends are arranged along the Y-axis direction. The armature assembly 62 rotates around a first rotating shaft 63, and the first rotating shaft 63 extends along the Z-axis direction. The magnetic circuit unit 59 in this embodiment is a swinging magnetic circuit unit with a magnetic holding function in the prior art. Its structure is well known to technicians in the relevant technical field and will not be repeated here. In this embodiment, the armature assembly 62 is also provided with a connecting groove 64, and the connecting groove 64 has two first abutting surfaces 65 opposite to each other. The connecting groove 64 is provided with an opening radially away from the coil assembly 61. In other embodiments, the two first abutting surfaces 65 can also be arranged in a manner opposite to each other.

[0117] like Fig.13 As shown, the rotating member 60 rotates around the second rotating shaft 66, and the second rotating shaft 66 extends along the Z-axis direction. The rotating member 60 is provided with a first end 67 and a second end 68 on both sides of the second rotating shaft 66. The first end 67 extends from the opening of the connecting groove 64 into the connecting groove 64 and is suitable for abutting the two first abutting surfaces 65. The second end 68 is the output end of the driving part 7. In this embodiment, the rotating member 60 is further provided with a rearward pushing portion 69 between the second end 68 and the second rotating shaft 66.

[0118] Fig.13 The state of the driving part 7 when the armature assembly 62 rotates to the first rotation position is shown. At this time, the first end 67 of the rotating member 60 is pushed by the first abutting surface 65 located at the rear, so that the rotating member 60 rotates to the first position. Fig.14 The figure shows the state of the driving part 7 when the armature assembly 62 rotates to the second rotation position. At this time, the first end 67 of the rotating member 60 is pushed by the first abutting surface 65 located in the front, so that the rotating member 60 rotates counterclockwise to the second position. When the rotating member 60 is in the second position, the position of the second end 68 is further forward along the Y-axis direction than the position of the second end 68 when the rotating member 60 is in the first position.

[0119] like Fig.15 As shown, the second end portion 68 is provided with two protrusions 70 along the Z-axis direction, and the two protrusions 70 are spaced apart along the Z-axis direction.

[0120] See also Fig.16 , Fig.16 FIG. 8 shows a micro switch 8 in this embodiment. The micro switch 8 is used to connect to the relay state sensing circuit to transmit a relay state signal to the relay state sensing circuit. Fig.16 As shown, the micro switch 8 is provided with a movable spring 71, the right end of the movable spring 71 along the X-axis direction is connected to the base of the micro switch 8, and the left end of the movable spring 71 is suitable for elastic rotation. When the left end of the movable spring 71 is pushed and close to the base of the micro switch 8, the micro switch 8 is turned on, and the relay state sensing circuit senses that the relay 1 is in the off state. When the left end of the movable spring 71 is released and away from the base of the micro switch 8, the micro switch 8 is turned off, and the relay state sensing circuit senses that the relay 1 is in the on state. In this embodiment, the movable spring 71 is pushed by the pushing portion 69. In other embodiments, the movable spring 71 can also be pushed by the pusher 28 or the armature assembly 62.

[0121] See also Figure 1 and Figure 4 , Figure 1 and Figure 4 FIG. 2 shows the shielding cover 9 in this embodiment. Figure 1As shown, the shielding cover 9 has two shielding walls perpendicular to the Z-axis direction and a connecting wall for connecting the two shielding walls. Figure 4 As shown, the shielding cover 9 is disposed outside the accommodating member 2. Specifically, the two shielding walls of the shielding cover 9 are disposed above and below the coil assembly 61 along the Z-axis direction, and the connecting wall of the shielding cover 9 is disposed on the right side of the coil assembly 61 along the X-axis direction.

[0122] See also Figures 17 to 21 , Figures 17 to 21 The internal structure of the relay 1 in this embodiment is shown.

[0123] like Fig.17 As shown, in this embodiment, the magnetic circuit unit 59 and the moving contact unit 21 are arranged at intervals on the left and right sides of the cavity along the X-axis direction. When the armature assembly 62 rotates to the first rotation position, the rotating member 60 rotates to the first position. At this time, the moving contact 40 is away from the two static contacts 22, the relay 1 is in the off state, and the external circuit is turned off. At this time, the two partitions 58 are arranged on the outside of the moving contact 40 and the static contact 22 along the X-axis direction. The pushing portion 69 pushes the moving spring 71, so that the left end of the moving spring 71 is close to the base of the micro switch 8. The micro switch 8 is turned on, and the relay state sensing circuit senses that the relay 1 is in the off state.

[0124] like Fig.18 As shown, the second end 68 of the rotating member 60 extends into the pushing cavity 34 and is adapted to abut the two second abutting surfaces 35, and the guide member 3 passes through the interval between the two protrusions 70 along the Z-axis direction. The second end 68 pushes back against the rear second abutting surface 35, compressing the elastic member 5 and storing energy.

[0125] like Fig.19 As shown, when the armature assembly 62 rotates to the second rotation position, the rotating member 60 rotates to the second position, at which time, the moving contact 40 abuts against the two stationary contacts 22, the relay 1 is in the on state, and the external circuit is turned on. At this time, the abutting portion 69 releases the moving spring 71, so that the left end of the moving spring 71 is away from the base of the micro switch 8, the micro switch 8 is turned off, and the relay state sensing circuit senses that the relay 1 is in the on state.

[0126] like Fig. 20As shown, at this time, the second end 68 of the rotating member 60 pushes forward against the second abutting surface 35 in front, so that the elastic member 5 stretches, but at this time, the elastic member 5 is still set to be pre-compressed in this embodiment, that is, the elastic member 5 still applies an elastic force toward the static contact member group 19 to the moving contact unit 21. At this time, the projection of the contact point between the second end 68 and the second abutting surface 35 on the first projection plane is located within the first projection. At this time, since the current flows through the overcurrent bridge 41 of the moving contact member 40 along the X-axis direction, two magnetic circuits based on the current passing through the two moving contacts 40 are formed between the first magnet 24 and the two second magnets 43, so that a magnetic attraction is formed between the first magnet 24 and the second magnet 43, and the greater the current, the greater the magnetic attraction.

[0127] like Fig.21 As shown, the guide member 3 passes through the interval between the two protrusions 70 along the Z-axis direction. The first rotating shaft 63 is inserted into the first rotating shaft hole 14 of the housing 10, so that the armature assembly 62 can rotate relative to the accommodating member 2 around the first rotating shaft 63. The second rotating shaft 66 is inserted into the second rotating shaft hole 15 of the housing 10, so that the rotating member 60 can rotate relative to the accommodating member 2 around the second rotating shaft 66.

[0128] The electric meter in this embodiment uses the above relay 1. The relay 1 acts as an actuator and is controlled by a control module in the electric meter. The control module sends a pulse electrical signal to the relay 1.

[0129] In this embodiment, the guide member 3 only slides with the moving contact unit 21 along the first straight line, and the first straight line extends along the Y-axis direction. Therefore, when the moving contact unit 21 slides with the guide member 3, there will be no jamming due to the two guide members 3 not being parallel to each other. Therefore, the driving force required to be output by the drive part 7 is smaller than that of the prior art, and the energy consumption of the coil assembly 61 is lower than that of the prior art. The guide member 3 is set to be located in the middle of the two moving contacts 42 along the X-axis direction. The torque formed by the reaction force of the static contact group 19 on the moving contact 40 can also correct the posture of the moving contact 40 in a more balanced manner, so that the two moving contacts 42 of the moving contact 40 remain arranged along the X-axis direction, and the two moving contacts 42 can apply the same force to the corresponding static contact 22.

[0130] In this embodiment, the guide member 3 is located in the middle of the two moving contacts 42 along the X-axis direction, which reduces the size of the relay 1 along the X-axis direction, so the structure is more compact and occupies less space.

[0131] In this embodiment, the overcurrent bridge 41 extends along the X-axis direction, and the two moving contacts 42 are fixedly connected to the overcurrent bridge 41. At this time, the safety distance between the moving contact 40 and the static contact 22 of the relay 1 is twice the actual distance between the moving contact 40 and the static contact 22. Therefore, the relay 1 has higher safety and stronger voltage resistance.

[0132] In this embodiment, the first projection and the second projection intersect, so the guide member 3 guides the movable contact member 40 according to the movement path of the movable contact member 40 , which is more conducive to improving the stability of the movement of the movable contact member 40 .

[0133] In this embodiment, the guide member 3 is located in the middle of the moving touch unit 21 along the Z-axis direction, which can better guide the moving touch unit 21, prevent the moving touch unit 21 from tilting up and down, and improve the stability of the movement of the moving touch unit 21.

[0134] In this embodiment, the guide member 3 passes through the moving contact unit 21 along the Y-axis direction. Therefore, the guide member 3 not only has a guiding function along the Y-axis direction, but can also position the moving contact unit 21 in the direction perpendicular to the Y-axis direction (i.e., the X-axis direction and the Z-axis direction), so that the relative position of the moving contact 40 and the two static contacts 22 is more certain, the contact is more reliable, the contact resistance is smaller, and the heat generated by the relay 1 is smaller.

[0135] In this embodiment, both ends of the guide member 3 along the Y-axis direction are fixed to the accommodating member 2 , so that the guide member 3 can leave more sufficient space for the movable contact unit 21 and the movement of the movable contact unit 21 along the Y-axis direction.

[0136] In this embodiment, the elastic bracket 32 ​​is disposed between the pusher 28 and the movable contact assembly 30, and can provide an elastic force toward the static contact assembly 19 to the movable contact 40 after the movable contact unit 21 experiences an overtravel, so that the movable contact 40 can better resist the two static contacts 22, and can also generate additional repulsive force when the movable contact 40 is separated from the static contact assembly 19, helping the movable contact 40 to stay away from the static contact assembly 19. By providing the limiter 33, it can be ensured that the distance between the movable contact 40 and the static contact assembly 19 meets the design requirements.

[0137] In this embodiment, the connecting member 29 and the pushing member 28 are integrally formed by insert injection molding, so that the limiting member 33 is easier to fix relative to the pushing member 28, and the limiting member 33 has stronger rigidity and better limiting effect on the moving contact member 40.

[0138] In this embodiment, there are more than two moving contacts 40, and each is suitable for contacting two stationary contacts 22. Therefore, each moving contact 40 is connected in parallel when contacting two stationary contacts 22, which can increase the load capacity of the relay 1 and reduce the contact resistance between the moving contact 41 and the stationary contact 23. Each moving contact 40 is arranged along the Z-axis direction, and the moving contact 40 extends along the X-axis direction and moves along the Y-axis direction, so that the relay 1 can make full use of all directions, with a more compact structure and smaller occupied space.

[0139] In this embodiment, the first magnetic conductive group 20 is relatively fixed to the static contact group 19, and the second magnetic conductive group 31 is relatively fixed to the moving contact group 30. The first magnetic conductive group 20 and the second magnetic conductive group 31 form a magnetic circuit based on the current passing through the moving contact 40, which can form a magnetic attraction force between the first magnetic conductive group 20 and the second magnetic conductive group 31. Therefore, when the relay 1 is impacted by a large fault current, the moving contact group 30 and the static contact group 19 are less likely to disengage, thereby avoiding the generation of destructive arcs that damage the relay 1.

[0140] In this embodiment, the number of the second magnetic conductors 43 is the same as the number of the movable contacts 40 in the movable contact assembly 30 , so a magnetic circuit can be formed around each movable contact 40 , making it difficult for each movable contact 40 to be separated from the stationary contact assembly 19 .

[0141] In this embodiment, the guide member 3 is located between the current bridges 41 of the two moving contacts 40 along the Z-axis direction, so that the guiding effect of the guide member 3 on each moving contact 40 is the same along the Z-axis direction, and each moving contact 40 is less likely to deflect up and down. The guide member 3 passes through the gap between the first part 46 and the second part 47, on the one hand, the second magnetic conductor 43 makes way for the guide member 3, and on the other hand, a magnetic circuit can be formed on both the left and right sides of the guide member 3 along the X-axis direction, thereby ensuring magnetic efficiency and making the moving contact 40 receive the same force on both sides of the guide member 3 along the X-axis direction, so that the moving contact 40 is less likely to deflect left and right.

[0142] In this embodiment, the first magnetic conductor group 20 is provided with the first magnetic conductor 24, which is more convenient to install. The guide member 3 passes through the first magnetic conductor 24, which can ensure the relative position of the first magnetic conductor 24 and the guide member 3 and the receiving member 2.

[0143] In this embodiment, by providing a barrier 16 on the accommodating member 2 to separate the first magnetic conductor 24 from the stationary contacts 22 on both sides, the two stationary contacts 22 are less likely to be short-circuited through the first magnetic conductor group 20 in the middle.

[0144] In this embodiment, the matching clearance between the guide member 3 and the limit member 33 is the smallest, which can make the guiding effect of the guide member 3 most obvious at the limit member 33 along the Y-axis direction. Since the movement of the movable contact 40 is synchronized with the limit member 33, the guiding effect of the guide member 3 at the limit member 33 can also play a better guiding role for the movable contact 40. At the same time, the matching clearance between the other parts of the movable contact unit 21 and the guide member 3 is larger than the matching clearance between the limit member 33 and the guide member 3, which can allow the movable contact unit 21 to have a certain degree of freedom in the Y-axis direction except for the limit member 33. Even if there is a slight deflection, it can be corrected by the guiding effect of the guide member 3 on the limit member 33, so as to ensure that the movable contact 40 is in the correct posture when it contacts the two static contacts 22. Especially when the pusher 28 is driven by the swinging magnetic circuit unit to move linearly along the Y-axis direction, the radial component of the rotation of the armature assembly 62 will act on the pusher 28 through the friction force, causing the moving contact unit 21 to be slightly deflected. By allowing the moving contact unit 21 to have a certain degree of freedom in the position in the Y-axis direction except for the limit member 33, it is possible to further avoid the above-mentioned friction force causing the moving contact unit 21 to become stuck in the movement of the Y-axis direction.

[0145] In this embodiment, the elastic member 5 stores energy due to deformation when the moving contact group 30 moves in a direction away from the static contact group 19, and releases energy due to restoring deformation when the moving contact group 30 moves in a direction close to the static contact group 19. This can better help the moving contact unit 21 to start from a position away from the static contact group 19 and approach the static contact group 19, which is beneficial to increase the movement stroke of the moving contact 40, and therefore also helps to increase the safety distance between the moving contact 40 and the static contact 22.

[0146] In this embodiment, the elastic member 5 is sleeved on the guide member 3, one end of the elastic member 5 abuts against the protrusion 18, and the other end elastically abuts against the pushing member 28, so that the structure is more compact and occupies less space.

[0147] In this embodiment, when the moving contact 40 contacts the two stationary contacts 22 along the Y-axis direction, the elastic member 5 applies an elastic force toward the stationary contact group 19 to the moving contact unit 21, which can improve the stability of the moving contact 40 and the two stationary contacts 22 in the closed state, and further improve the short-circuit resistance, that is, improve the ability of the moving contact 40 to prevent the stationary contact 22 from being disengaged when the relay 1 is subjected to a large fault current.

[0148] In this embodiment, by providing separators 58 on both sides of the stationary contact group 19 along the X-axis direction, and the separators 58 are made of high-temperature resistant insulating material, it is possible to prevent the arc overflowing laterally from damaging other parts of the relay 1.

[0149] The present embodiment adopts a swinging magnetic circuit unit, which can effectively amplify the tangential movement stroke of the armature assembly 62 , and is beneficial to increase the safety distance between the moving contact 40 and the stationary contact 22 .

[0150] In this embodiment, the magnetic circuit unit 59 and the moving contact unit 21 are spaced apart along the X-axis direction, which can prevent the relay 1 from being too large in the movement direction (Y-axis direction) of the moving contact unit 21, so that the structure is more compact and occupies less space; at the same time, it can prevent the magnetic circuit unit 59 from affecting the linear movement of the moving contact unit 21 along the Y-axis direction, thereby ensuring a larger safety distance between the moving contact 42 and the static contact 23.

[0151] In this embodiment, the tangential component of the movement of the armature assembly 62 is transmitted to the pushing member 28 through the rotating member 60. On the one hand, it is convenient to adjust the spacing between the magnetic circuit unit 59 and the moving contact unit 21 along the X-axis direction. On the other hand, compared with the technical solution of directly extending the swing arm from the armature assembly 62, the ratio of the resistance arm to the power arm is smaller, and the required magnetic driving force is smaller.

[0152] In this embodiment, the second end 68 extends out of the pushing cavity 34, so that the pusher 28 and the rotating member 60 can be more closely matched. By providing two protrusions 70 spaced apart along the Z-axis direction, the guide member 3 can be made to give way.

[0153] In this embodiment, when the moving contact member 40 abuts against the two static contacts 22, the projection of the contact point between the second end portion 68 and the second abutting surface 35 on the first projection plane is located within the first projection, which means that when the moving contact member 40 abuts against the two static contacts 22, the force point of the moving contact unit 21 is within the width range of the guide member 3, so the moving contact unit 21 will not generate a deflection moment, thereby ensuring that the moving contact member 40 correctly abuts against the two static contacts 22 along the Y-axis direction.

[0154] In this embodiment, the state of the relay 1 can be transmitted to the external relay state sensing circuit by providing the micro switch 8. At the same time, the dynamic spring 71 of the micro switch 8 can also provide thrust for the movement of the dynamic contact unit 21 close to the static contact member group 19, so that the dynamic contact member 40 and the two static contacts 22 are closed faster.

[0155] The above specification and description of the embodiments are used to explain the protection scope of the present application, but do not constitute a limitation on the protection scope of the present application.

Claims

1. A relay, characterized in that: The invention comprises a housing (2), an electric control part (4) and a guide part (3); the electric control part (4) comprises a static contact group (19) and a moving contact unit (21); the static contact group (19) is fixedly connected to the housing (2) and comprises two static contacts (22) arranged along the X-axis direction; the moving contact unit (21) moves relative to the housing (2) along the Y-axis direction and comprises a moving contact group (30) corresponding to the static contact group (19); the moving contact group (31) is fixedly connected to the housing (2) and comprises two static contacts (22) arranged along the X-axis direction; the moving contact unit (21) moves relative to the housing (2) along the Y-axis direction and comprises a moving contact group (30) corresponding to the static contact group (19); 0) comprises a moving contact (40), wherein the moving contact (40) is provided with two moving contact points (42) along the X-axis direction, and the two moving contact points (42) are suitable for contacting or moving away from the corresponding stationary contact (22) along the Y-axis direction; the guide member (3) is fixedly connected to the accommodating member (2) and is located in the middle of the two moving contact points (42) along the X-axis direction; the guide member (3) only slides with the moving contact unit (21) along a first straight line, and the first straight line extends along the Y-axis direction.

2. A relay as claimed in claim 1, characterized in that: The movable contact (40) is also provided with a current-passing bridge (41), the current-passing bridge (41) extends along the X-axis direction, and two movable contact points (42) are fixedly connected to the current-passing bridge (41).

3. A relay as claimed in claim 2, characterized in that: A first projection of the guide member (3) on the first projection plane intersects with a second projection of the movable contact member (40) on the first projection plane, and the first projection plane is perpendicular to the Z-axis direction.

4. A relay as claimed in claim 2, characterized in that: The guide member (3) is located in the middle of the moving contact unit (21) along the Z-axis direction.

5. A relay as claimed in claim 3, characterized in that: The guide member (3) extends along the Y-axis direction and penetrates the moving contact unit (21).

6. A relay as claimed in claim 5, characterized in that: Both ends of the guide member (3) are fixedly connected to the accommodating member (2).

7. A relay as claimed in claim 5, characterized in that: The movable contact unit (21) further comprises a pushing member (28), an elastic bracket (32) and a limiting member (33); the elastic bracket (32) and the limiting member (33) both correspond to the movable contact member group (30); the elastic bracket (32) is located between the pushing member (28) and the movable contact member group (30) along the Y-axis direction; the limiting member (33) is fixed relative to the pushing member (28) and abuts against the movable contact member (40) along the Y-axis direction when the movable contact member (40) is away from the two stationary contacts (22) to limit the distance between the movable contact member (40) and the stationary contact member group (19).

8. A relay as claimed in claim 7, characterized in that: The movable contact unit (21) further comprises a connecting member (29), the connecting member (29) corresponds to the limiting member (33) and is integrally formed with the push member (28) by insert injection molding, the two ends of the connecting member (29) along the Z-axis direction respectively extend out of the push member (28), and the limiting member (33) is fixedly connected to the two ends of the connecting member (29).

9. A relay as claimed in claim 7, characterized in that: The number of the moving contacts (40) in the moving contact group (30) is more than two, and each moving contact (40) is arranged along the Z-axis direction.

10. A relay as claimed in claim 9, characterized in that: The electric control part (4) also includes a first magnetic conductive group (20), and the moving contact unit (21) also includes a second magnetic conductive group (31); the first magnetic conductive group (20) corresponds to the static contact member group (19) and is fixed relative to the static contact member group (19), and the second magnetic conductive group (31) corresponds to the dynamic contact member group (30) and is fixed relative to the dynamic contact member group (30); when the dynamic contact member (40) contacts the two static contacts (22), the second magnetic conductive group (31) approaches or contacts the first magnetic conductive group (20) along the Y-axis direction, so that the first magnetic conductive group (20) and the second magnetic conductive group (31) form a magnetic circuit based on the current passing through the dynamic contact member (40).

11. A relay as claimed in claim 10, characterized in that: The second magnetic conductor group (31) includes second magnetic conductors (43), and the number of the second magnetic conductors (43) is the same as and corresponds to the number of the movable contacts (40) in the corresponding movable contact group (30); the second magnetic conductor (43) is provided with a main body (44) and an extension part (45), the main body (44) is fixed to the back of the current bridge (41) and extends along the Z-axis direction, and the extension part (45) extends from both ends of the main body (44) along the Z-axis direction along the Y-axis direction toward the first magnetic conductor group (20).

12. A relay as claimed in claim 11, characterized in that: The number of the moving contacts (40) in the moving contact group (30) is two, the guide member (3) is located between the current bridges (41) of the two moving contacts (40) along the Z-axis direction, and in the second magnetic conductor (43), an extension portion (45) close to the guide member (3) along the Z-axis direction is provided with a first portion (46) and a second portion (47) along the X-axis direction, the first portion (46) and the second portion (47) are arranged at intervals along the X-axis direction, and the guide member (3) passes through the interval between the first portion (46) and the second portion (47).

13. A relay as claimed in claim 12, characterized in that: The first magnetic conductor group (20) comprises a first magnetic conductor (24), the first magnetic conductor (24) is fixed to the accommodating member (2), the first magnetic conductor (24) extends along the Z-axis direction and is located between two stationary contact members (22) along the X-axis direction; and the guide member (3) passes through the first magnetic conductor (24).

14. A relay as claimed in claim 13, characterized in that: The accommodating member (2) is provided with two baffles (16), and the two baffles (16) are respectively located on both sides of the first magnetic conductor (24) along the X-axis direction and between the two stationary contact members (22).

15. A relay according to any one of claims 7 to 14, characterized in that: The matching clearance between the limiting member (33) and the guide member (3) in the moving contact unit (21) is minimal.

16. A relay as claimed in claim 7, characterized in that: It also includes an elastic member (5), which elastically abuts against the pushing member (28) and stores energy when the moving contact member (40) moves in a direction away from the static contact member group (19), and releases energy when the moving contact member (40) moves in a direction close to the static contact member group (19).

17. A relay as claimed in claim 16, characterized in that: The guide member (3) is provided with a protrusion (18) at a position away from the static contact member group (19); the elastic member (5) is sleeved on the guide member (3), one end of which abuts against the protrusion (18) and the other end elastically abuts against the pushing member (28).

18. A relay as claimed in claim 16, characterized in that: When the moving contact (40) contacts the two stationary contact members (22) along the Y-axis direction, the elastic member (5) applies an elastic force toward the stationary contact member group (19) to the moving contact unit (21).

19. A relay as claimed in claim 7, characterized in that: It also includes a separator group (6), which corresponds to the static contact group (19) and is provided with two separators (58), the two separators (58) are fixed to the accommodating member (2) and are located on both sides of the static contact group (19) along the X-axis direction, and the separators (58) are made of high-temperature resistant insulating material.

20. A relay as claimed in claim 7, characterized in that: The invention also includes a driving part (7), wherein the driving part (7) is used to drive the moving contact unit (21) to move along the Y-axis direction and includes a magnetic circuit unit (59), wherein the magnetic circuit unit (59) includes a coil assembly (61) and an armature assembly (62), wherein the coil assembly (61) is fixedly connected to the accommodating part (2) and drives the armature assembly (62) to rotate around a first rotating shaft (63) extending along the Z-axis direction; the output end of the driving part (7) abuts against the pushing member (28) along the Y-axis direction to convert the rotation of the armature assembly (62) into a linear motion of the pushing member (28) along the Y-axis direction.

21. A relay as claimed in claim 20, characterized in that: The magnetic circuit unit (59) and the moving contact unit (21) are arranged at intervals along the X-axis direction.

22. A relay as claimed in claim 20, characterized in that: The driving part (7) also includes a rotating member (60), which rotates around a second rotating shaft (66) extending along the Z-axis direction and is provided with a first end (67) and a second end (68) on both sides of the second rotating shaft (66), and the second end (68) is the output end of the driving part (7); the armature assembly (62) is provided with two first abutting surfaces (65) opposite to or opposite to each other, and the first end (67) is suitable for abutting the two first abutting surfaces (65); the pushing member (28) is provided with two second abutting surfaces (35) opposite to or opposite to each other along the Y-axis direction, and the second end (68) is suitable for abutting the two second abutting surfaces (35).

23. A relay as claimed in claim 22, characterized in that: The pushing member (28) is provided with a pushing cavity (34), two second abutting surfaces (35) are arranged on two opposite walls of the pushing cavity (34) along the Y-axis direction, the second end portion (68) extends into the pushing cavity (34) and is provided with two protrusions (70) along the Z-axis direction, the two protrusions (70) are arranged at intervals along the Z-axis direction, and the guide member (3) passes through the interval between the two protrusions (70).

24. A relay as claimed in claim 22, characterized in that: When the moving contact member (40) contacts the two stationary contact members (22), the projection of the contact point between the second end portion (68) and the second contact surface (35) on the first projection surface is located within the first projection.

25. A relay as claimed in claim 22, characterized in that: The invention also comprises a micro switch (8), wherein the micro switch (8) is provided with a movable spring (71), and the pushing member (28), the rotating member (60) or the armature assembly (62) is suitable for pushing against the movable spring (71) to turn the micro switch (8) on or off.

26. An electric meter, characterized in that: It comprises a relay (1) as claimed in any one of claims 1 to 25.

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