Relay and ammeter

Abstract

The relay comprises a fixed unit and a movable contact unit, the fixed unit comprises a static contact piece set, and the static contact piece set comprises two static contact pieces arranged in the X-axis direction; the movable contact unit moves in the Y-axis direction relative to the fixed unit and comprises a movable contact piece set corresponding to the static contact piece set, the movable contact piece set comprises a movable contact piece, the movable contact piece is suitable for being connected or disconnected with the static contact piece set in the Y-axis direction and is provided with two movable contact points corresponding to the static contact pieces, and the two movable contact points are arranged in the X-axis direction; the movable contact unit is provided with a guide part, the guide part is in sliding fit with the fixed unit along a first straight line, and the first straight line extends in the Y-axis direction and is located in the middle of the two movable contacts in the X-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 fixed unit, a moving contact unit and a driving unit. The fixed unit includes a receiving part and a static contact group. The receiving part is used to receive the static contact group, the moving contact unit and the driving unit. The static contact group is fixedly connected to the receiving part and includes two static contacts arranged along the X-axis direction. The two static contacts are used to connect the external circuit. The moving contact unit moves along the Y-axis direction relative to the fixed unit 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 closing or disconnecting with the static contact group along the Y-axis direction. When the moving contact is closed with the static contact group, the two static contacts are turned on, and the external circuit is turned on accordingly; when the moving contact is disconnected from the static contact group, the two static contacts are turned off, and the external circuit is turned off accordingly. The elastic bracket is placed between the pusher and the moving contact assembly and is used for the moving contact assembly to be arranged thereon. The elastic bracket stores energy when the moving contact and the static contact assembly are closed, and releases energy when the moving contact and the static contact assembly are disconnected. The driving unit is used to drive the pusher to move relative to the fixed unit along the Y-axis direction. The driving unit includes a magnetic circuit part. The magnetic circuit part includes a coil assembly and an armature assembly, and the coil assembly is fixedly connected to the accommodating part. When the magnetic circuit part has a magnetic holding function, the magnetic circuit part can adopt a swinging magnetic circuit part, that is, the armature assembly swings relative to the coil assembly, and the tangential component of the armature assembly swing is transmitted to the pusher to drive 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 pusher 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 set a guide member. The guide member is arranged on both sides of the pusher along the X-axis direction. The guide member is fixedly connected to the accommodating part and slides with the pusher. However, it is found in practice that the energy consumption of the relay coil assembly in the above-mentioned prior art is relatively large. Utility Model Content

[0003] 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.

[0004] In order to achieve the above purpose, the following technical solutions are adopted:

[0005] The first technical scheme relates to a relay, which includes a fixed unit and a moving contact unit, the fixed unit includes a static contact group, the static contact group includes two static contacts arranged along the X-axis direction; the moving contact unit moves relative to the fixed unit along the Y-axis direction and includes a dynamic contact group arranged corresponding to the static contact group, the dynamic contact group includes a dynamic contact, the dynamic contact is suitable for closing or disconnecting with the static contact group along the Y-axis direction and is provided with two moving contacts corresponding to the static contacts, and the two moving contacts are arranged along the X-axis direction; the moving contact unit is provided with a guide portion, the guide portion only slides with the fixed unit along a first straight line, the first straight line extends along the Y-axis direction and is located in the middle of the two moving contacts along the X-axis direction; the projection of the portion where the guide portion slides with the fixed unit on the first straight line does not overlap with the projection of the other parts of the moving contact unit except the guide portion on the first straight line.

[0006] The second technical solution is based on the first technical solution, wherein the guide portion is located in the middle of the moving contact unit along the Z-axis direction.

[0007] The third technical solution is based on the first technical solution, wherein the moving contact is 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 fourth technical solution is based on the third technical solution, wherein the moving contact unit also includes a pushing member, an elastic bracket, a limiting member and a guiding member; the elastic bracket and the limiting member are both arranged corresponding to the moving contact group, the elastic bracket is located between the pushing member and the moving contact group along the Y-axis direction, the limiting member is fixed relative to the pushing member and abuts against the moving contact along the disconnection direction when the moving contact is disconnected from the static contact group to limit the distance between the moving contact and the static contact group; the guiding member is fixed relative to the pushing member and extends along a first straight line, the guiding member is provided with a first guiding portion extending out of the pushing member along the disconnection direction and a second guiding portion extending out of the limiting member along the closing direction, the first guiding portion and the second guiding portion are both the guiding portions.

[0009] The fifth technical solution is based on the fourth technical solution, wherein the dynamic contact unit also includes a connecting piece, which is correspondingly arranged with the limiting piece and is integrally molded with the pushing piece insert by injection molding; the two ends of the connecting piece along the Z-axis direction respectively extend out of the pushing piece, and the limiting piece is fixedly connected to both ends of the connecting piece.

[0010] The sixth technical solution is based on the fourth technical solution, wherein the fixed unit also includes a accommodating member and a first magnetic conductive group, and the moving contact unit also includes a second magnetic conductive group; the first magnetic conductive group is correspondingly arranged with the static contact member group and both are fixed to the accommodating member; the second magnetic conductive group is correspondingly arranged with the moving contact member group and is fixed relative to the moving contact member group; when the moving contact member and the static contact member group are closed, the second magnetic conductive group approaches the first magnetic conductive group along the closing 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 overcurrent bridge; the first guide portion is slidably matched with the accommodating member, and the second guide portion is slidably matched with the accommodating member and / or the first magnetic conductive group.

[0011] The seventh technical solution is based on the sixth technical solution, wherein the accommodating member includes a shell and a cover body; the shell is provided with a first groove, the cover body is fixedly connected to the shell and is provided with a first plug block extending into the first groove along the Z-axis direction, and a first hole opening along a closing direction is formed between the bottom of the first groove and the first plug block, and the first guide portion and the first hole are slidably matched along a first straight line.

[0012] The eighth technical solution is based on the seventh technical solution, wherein the first magnetic conductor group is provided with a matching hole, and the second guide portion is slidingly matched with the matching hole along a first straight line.

[0013] The ninth technical solution is based on the seventh or eighth technical solution, wherein the shell is provided with a second groove, the cover body is provided with a second plug block extending into the second groove along the Z-axis direction, a second hole opening along the disconnection direction is formed between the bottom of the second groove and the second plug block, and the second guide portion and the second hole are slidably matched along the first straight line.

[0014] The tenth technical solution is based on the sixth technical solution, wherein the first magnetic conductor group includes a first magnetic conductor, which extends along the Z-axis direction and is located between two static contacts along the X-axis direction; the number of moving contacts in the moving contact group is more than two, and each moving contact is arranged along the Z-axis direction; the second magnetic conductor group includes a second magnetic conductor, which is arranged corresponding to the moving contacts in the moving contact group and is provided with a main body and an extension portion, the main body is fixedly connected to the back side of the current bridge and extends along the Z-axis direction, and the extension portion extends from both ends of the main body along the closing direction.

[0015] The eleventh technical solution is based on the tenth technical solution, wherein the accommodating member is provided with two blocking portions, and the two blocking portions are located on both sides of the first magnetic conductor along the X-axis direction and between the two static contacts.

[0016] 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, 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.

[0017] The thirteenth technical solution is based on the sixth technical solution, and further includes an elastic member, which is located between the fixed unit and the moving contact unit along the Y-axis direction, and stores energy when the moving contact unit moves along the disconnecting direction, and releases energy when the moving contact unit moves along the closing direction.

[0018] The fourteenth technical solution is based on the thirteenth technical solution, wherein the elastic member is sleeved on the first guide portion, one end of which abuts against the accommodating member, and the other end of which elastically abuts against the moving contact unit.

[0019] The fifteenth technical solution is based on the fourteenth technical solution, wherein, when the moving contact and the static contact group are closed, the elastic member applies an elastic force to the moving contact unit along the closing direction.

[0020] The sixteenth technical solution is based on the fourth technical solution, which also includes a driving unit, which is used to drive the pushing member to move relative to the fixed unit along the Y-axis direction and includes a magnetic circuit part, and the magnetic circuit part includes a coil assembly and an armature assembly. The coil assembly is fixed to the accommodating member and drives the armature assembly to rotate around a first rotating axis extending along the Z-axis direction. The output end of the driving unit 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.

[0021] The seventeenth technical solution is based on the sixteenth technical solution, wherein the magnetic circuit portion and the moving contact unit are arranged along the X-axis direction.

[0022] The eighteenth technical solution is based on the seventeenth technical solution, wherein the driving unit 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, the second end being the output end of the driving unit, the armature assembly being provided with two first abutting surfaces opposite to or opposite to each other, the first end being suitable for abutting the two first abutting surfaces, and the pushing member being provided with two second abutting surfaces opposite to or opposite to each other along the Y-axis direction, the second end being suitable for abutting the two second abutting surfaces.

[0023] The nineteenth technical solution is based on the eighteenth 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.

[0024] The twentieth technical solution is based on the eighteenth technical solution, wherein, when the moving contact and the static contact group are closed, the projection of the contact point between the second end and the second abutment surface on the first projection plane is located within the projection of the guide on the first projection plane, and the first projection plane is perpendicular to the Z-axis direction.

[0025] The twenty-first technical solution relates to an electric meter, which includes a relay as described in any one of the first to twentieth technical solutions.

[0026] Compared with the prior art, the above solution has the following beneficial effects:

[0027] In the prior art, guide members are arranged on both sides of the push 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 push member is prone to jamming when moving linearly along the Y-axis direction. Therefore, the driving part is required to output a larger driving force to drive the push 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 moving contact unit is provided with a guide part, and the guide part only slides with the fixed unit along the first straight line, and the first straight line extends along the Y-axis direction. Therefore, when the guide part slides with the fixed unit, it will not be jammed because the two guide members are not parallel to each other. Therefore, the driving force required to be output by the driving unit 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 portion is set 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.

[0028] 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 part 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.

[0029] In the prior art, the guide member slides with the pusher in the moving contact unit and is fixed to the receiving member. In the first technical solution, the moving contact unit is provided with a guide portion, which slides with the fixed unit to reduce the impact of debris that may be generated when the guide member slides on the moving contact, avoids the increase of contact resistance, and thus better ensures the voltage resistance of the relay.

[0030] In the first technical solution, the projection of the part where the guide part and the fixed unit slide together on the first straight line does not overlap with the projection of the other parts of the moving contact unit except the guide part on the first straight line, which means that the part where the guide part and the fixed unit slide together must be located only outside the other parts of the moving contact unit except the guide part along the Y-axis direction. Therefore, compared with the technical solution in which the guide part is arranged on one or both sides of the moving contact unit along the Z-axis direction, the size of the sliding fitting part along the Y-axis direction is smaller, the friction force is smaller, and therefore the driving force required by the driving unit is smaller, and the energy consumption of the coil assembly is smaller. At the same time, the sliding fitting part is also kept away from the position where the moving contact and the static contact contact contact each other, thereby further reducing the influence of the debris generated by the sliding fitting on the moving contact.

[0031] In the first technical solution, the moving contact unit is provided with a guide portion, which should be interpreted as the guide portion moving with the moving contact unit moving along the Y-axis direction. The guide portion can be fixed relative to the pusher, or relative to the moving contact member group, or partially fixed relative to the pusher, and partially fixed relative to the moving contact member group. The guide portion only slides with the fixed unit along the first straight line, which should be interpreted as when there is only one guide portion, the guide portion extends along the Y-axis direction; and when there are more than two guide portions, each guide portion is only arranged along the Y-axis direction.

[0032] In the second technical solution, the guide portion is located in the middle of the moving touch unit along the Z-axis direction, which can better guide the moving touch unit to move along the Y-axis direction, making it less likely for the moving touch unit to deflect up and down, thereby improving the stability of the moving touch unit's movement.

[0033] The third 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 in the relay is twice the actual distance when the moving contact and the static contact are disconnected. Therefore, the relay has higher safety and stronger voltage resistance.

[0034] In the fourth technical solution, the elastic bracket is arranged between the pushing member and the moving contact group, and can provide the moving contact with an elastic force toward the static contact group after the pushing member experiences an overtravel, so that the moving contact is better closed with the static contact group, 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. The first guide portion is located behind the pushing member, and the second guide portion is located in front of the limiter, and the first guide portion and the second guide portion are both formed on the guide portion, so that the moving contact unit can slide and cooperate with the fixed unit in the front and back along the Y-axis direction, so that the guiding effect is better and the stability of the movement of the moving contact unit is higher.

[0035] In the fifth 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.

[0036] In the sixth 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 overcurrent bridge, 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 and the static contact group are less likely to disengage, thereby avoiding the generation of destructive arcs that damage the relay.

[0037] In the seventh technical solution, the first hole that slidably cooperates with the first guide portion is formed by plugging the shell and the cover body, so the installation is more convenient.

[0038] In the eighth technical solution, the second guide portion is slidably matched with the first magnetic conductor group. Since both the second guide portion and the first magnetic conductor group can be made of metal materials, compared with the sliding match between the second guide portion and the accommodating member, less debris can be formed near the moving contact and the static contact, and the impact on the moving contact and the static contact is smaller, which can avoid the increase of contact resistance and thus better ensure the voltage resistance of the relay.

[0039] In the ninth technical solution, the second hole that slides with the second guide is formed by plugging the housing and the cover, so the installation is more convenient. The second guide slides with the second hole, and debris is less likely to leave the second hole, which has less impact on the moving contact and the static contact, and can avoid the increase of contact resistance, so the voltage resistance of the relay can be better guaranteed.

[0040] In the tenth technical solution, the first magnetic conductor is provided in the first magnetic conductor group, which is more convenient for installation. The second magnetic conductor is provided corresponding to the moving contact in the moving contact group, so that a magnetic circuit can be formed around each moving contact, so that each moving contact is not easily separated from the static contact group. The extension part extends from both ends of the body along the closing direction, so when the moving contact and the static contact group are closed, the air gap between the first magnetic conductor and the second magnetic conductor is smaller, the magnetic resistance of the magnetic circuit is smaller, and the moving contact is less likely to separate from the static contact group.

[0041] In the eleventh 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.

[0042] 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.

[0043] In the thirteenth technical solution, the elastic member stores energy due to deformation when the moving contact moves in the disconnecting direction and releases energy due to restoring the deformation when the moving contact moves in the closing direction. This can better help the moving contact unit to start from the disconnected position 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.

[0044] In the fourteenth technical solution, the elastic member is sleeved on the first guide portion, one end of the elastic member abuts against the accommodating member, and the other end elastically abuts against the moving contact unit, so that the structure is more compact and occupies less space.

[0045] In the fifteenth technical solution, when the moving contact and the static contact group are closed, the elastic member applies elastic force to the moving contact unit along the closing direction, which can improve the stability of the moving contact and the static contact group in the closed state, and further improve the short-circuit resistance, that is, improve the ability of preventing the moving contact from being detached from the static contact group when the relay is subjected to a large fault current.

[0046] The sixteenth technical solution is a specific implementation method using a swinging magnetic circuit portion. The swinging magnetic circuit portion 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 group.

[0047] In the seventeenth technical scheme, the magnetic circuit part 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 (Y-axis direction) of the moving contact unit, so that the structure is more compact and occupies less space; at the same time, it can prevent the magnetic circuit part 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.

[0048] In the eighteenth 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 part 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.

[0049] In the nineteenth technical solution, the second end is extended into 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.

[0050] In the twentieth technical solution, when the moving contact member and the static contact member group are closed, the projection of the contact point between the second end portion and the second abutting surface on the first projection plane is located within the projection of the guide member on the first projection plane, which means that when the moving contact member and the static contact member group are closed, 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 is correctly closed with the static contact member group along the Y-axis direction.

[0051] The electric meter in the twenty-first technical solution has the technical effects corresponding to the technical solution it refers to. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solution of the embodiment, the following briefly introduces the drawings required for use:

[0053] Figure 1 is a three-dimensional exploded view of a relay in the embodiment;

[0054] Figure 2 is a top view of the housing in the embodiment;

[0055] Figure 3 is a top view of the accommodation component in the embodiment;

[0056] Figure 4 for Figure 3 AA section view;

[0057] Figure 5 for Figure 3 BB section view;

[0058] Figure 6 for Figure 3 CC section view;

[0059] Figure 7 Schematic diagram of the structure of the static contact group and the moving contact unit in the embodiment;

[0060] Figure 8 is a three-dimensional diagram of the first magnetic conductive body group in the embodiment;

[0061] Fig. 9 is a three-dimensional exploded view of the moving contact unit in the embodiment;

[0062] Fig.10 is a front view of the moving contact unit in the embodiment;

[0063] Fig.11 for Fig.10 DD section view;

[0064] Fig.12 is a top view of the drive unit when the relay is in the off state in the embodiment;

[0065] Fig.13 is a top view of the drive unit when the relay is in the on state in the embodiment;

[0066] Fig.14 is a three-dimensional diagram of a rotating member in an embodiment;

[0067] Fig.15 A three-dimensional diagram of a micro switch in an embodiment;

[0068] Fig.16 is a three-dimensional diagram of a relay in the embodiment;

[0069] Fig.17 Schematic diagram of the internal structure when the relay is in the off state in the embodiment;

[0070] Fig.18 A top view of the relay in the embodiment when it is in the off state;

[0071] Fig.19 for Fig.18 EE section view;

[0072] Fig. 20 Schematic diagram of the internal structure when the relay is in the conducting state in the embodiment;

[0073] Fig.21 A top view of the relay in the embodiment when it is in the on state;

[0074] Fig. 22 for Fig.21 FF section view.

[0075] Description of main reference numerals:

[0076] 1. Relay; 2. Fixed unit; 3. Moving contact unit; 4. Elastic member; 5. Driving unit; 6. Micro switch; 7. Shielding cover; 8. Accommodating member; 9. Static contact member group; 10. First magnetic conductive member group; 11. Separating member group; 12. Shell; 13. Cover; 14. First slot; 15. Second slot; 16. Accommodating slot; 17. Main body slot; 18. Inserting slot; 19. Blocking part; 20. Separating slot; 21. First rotating shaft hole; 22. Second rotating shaft hole; 23. First plug block; 24. Second plug block; 25. First hole; 26. Second hole; 27. Stationary contact; 28. Stationary contact point; 29. ​​First magnetic conductor; 30. Main body; 31. Insertion part; 32. Matching hole; 33. Separator; 34. Pusher; 35. Connector; 36. Moving contact group; 37. Second magnetic conductor group; 38. Elastic bracket; 39. Stopper; 40. Guide; 41. Pusher cavity; 42. Second abutment surface; 43. First through hole hole; 44, groove; 45, connecting column; 46, connecting end; 47, second through hole; 48, moving contact; 49, overcurrent bridge; 50, moving contact; 51, second magnetic conductor; 52, body; 53, extension; 54, first part; 55, second part; 56, frame; 57, elastic support; 58, third through hole; 59, connecting hole; 60, elastic arm; 61, limit part; 62, connecting part; 63, fourth through hole; 64, avoidance Hole; 65, assembly hole; 66, protrusion; 67, first guide portion; 68, second guide portion; 69, guide portion; 70, magnetic circuit portion; 71, rotating member; 72, coil assembly; 73, armature assembly; 74, first rotating shaft; 75, connecting groove; 76, first abutting surface; 77, second rotating shaft; 78, first end portion; 79, second end portion; 80, pushing portion; 81, protrusion; 82, movable spring; Y1, closing direction; Y2, opening direction. DETAILED DESCRIPTION

[0077] 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 it is not required 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 a closing direction Y1 and a disconnecting direction Y2, among which the closing direction Y1 refers to the movement direction of the moving contact when it moves in the direction of closing with the static contact group, that is, forward, and the disconnecting direction Y2 refers to the movement direction of the moving contact when it moves in the direction of disconnecting with the static contact group, that is, backward; the Z-axis direction can be divided into up and down.

[0078] 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.

[0079] 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.

[0080] In the claims and the description, unless otherwise defined, the terms "includes", "has" and their variations mean "including but not limited to".

[0081] 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.

[0082] 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.

[0083] In the claims and the specification, unless otherwise defined, the term "the movable contact unit is provided with a guide portion" means that the guide portion moves with the movement of the movable contact unit along the Y-axis direction. The guide portion may be fixed relative to the pusher, or relative to the movable contact member group, or may be partially fixed relative to the pusher and partially fixed relative to the movable contact member group.

[0084] In the claims and description, unless otherwise specified, the term "the guide portion only slides with the fixed unit along the first straight line" means that when there is only one guide portion, the guide portion extends along the Y-axis direction; and when there are more than two guide portions, each guide portion is arranged only along the Y-axis direction.

[0085] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings.

[0086] Example

[0087] 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 takes single-phase alternating current as an example. Relay 1 controls the on and off of single-phase alternating current. When relay 1 is in the off state, the external circuit is off, and when relay 1 is in the on state, the external circuit is on.

[0088] See also Figure 1 , Figure 1 Schematic diagram showing the structure of the relay 1 in this embodiment. Figure 1 As shown, the relay 1 includes a fixing unit 2, a moving contact unit 3, an elastic member 4, a driving unit 5, a micro switch 6 and a shielding cover 7.

[0089] like Figure 1 As shown, in this embodiment, the fixing unit 2 includes a receiving member 8, a static contact member group 9, a first magnetic conductive member group 10 and a separator member group 11. The receiving member 8, the static contact member group 9, the first magnetic conductive member group 10 and the separator member group 11 are fixed relative to each other.

[0090] See also Figures 1 to 6 , Figures 1 to 6 The container 8 in this embodiment is shown. The container 8 is used to accommodate and install the static contact group 9, the first magnetic conductive group 10, the separator group 11, the moving contact unit 3, the elastic member 4, the drive unit 5 and the micro switch 6. As in the prior art, the container 2 is made of insulating material, and in this embodiment, it is made of plastic injection molding.

[0091] like Figure 1 As shown, the receiving component 2 includes a shell 12 and a cover 13 .

[0092] like Figure 2 As shown, the housing 12 is provided with a cavity opening upward. The cavity can be divided into a left cavity and a right cavity. The left cavity is provided with a first groove 14, a second groove 15 and a accommodating groove 16. The first groove 14 is located at the rear end of the left cavity along the Y-axis direction and opens upward along the Z-axis direction. The second groove 15 is located at the front end of the left cavity along the Y-axis direction and opens upward along the Z-axis direction. The accommodating groove 16 is located behind the second groove 15 along the Y-axis direction and is adjacent to the second groove 15. The accommodating groove 16 opens upward and includes a main groove 17 and an insertion groove 18. The accommodating groove 16 is provided with a blocking portion 19 on both sides of the left and right sides along the X-axis direction. The left cavity is provided with a separation groove 20 on both sides of the left cavity along the X-axis direction. The separation groove 20 opens upward along the Z-axis direction and extends along the Y-axis direction. A first shaft hole 21 is provided in the middle of the right cavity, and a second shaft hole 22 is provided at the junction of the left cavity and the right cavity.

[0093] The cover 13 is used to cover the opening of the cavity of the housing 12 and is fixedly connected to the housing 12. In this embodiment, the cover 13 is snap-fitted with the housing 12. Figures 4 to 6As shown, the cover body 13 is provided with a first plug block 23 and a second plug block 24. The first plug block 23 is arranged along the Z-axis direction corresponding to the first slot 14. The first plug block 23 extends into the first slot 14 along the Z-axis direction, and a first hole 25 is formed between the bottom of the first slot 14 and the first plug block 23, and the first hole 25 is opened along the closing direction Y1. In this embodiment, the closing direction Y1 refers to the movement direction of the moving contact 48 when it moves in the direction of closing with the static contact group 9, that is, forward. The second plug block 24 is arranged along the Z-axis direction corresponding to the second slot 15. The second plug block 24 extends into the second slot 15 along the Z-axis direction, and a second hole 26 is formed between the bottom of the second slot 15 and the second plug block 24, and the second hole 26 is opened along the disconnection direction Y2. In this embodiment, the disconnection direction Y2 refers to the movement direction of the moving contact 48 when it moves in the direction of disconnection with the static contact group 9, that is, backward. As shown Figure 5 and Figure 6 As shown, the main body groove 17 and the insertion groove 18 are arranged and connected along the Z-axis direction. The insertion groove 18 is located below the main body groove 17.

[0094] See also Figure 7 , Figure 7 The static contact group 9 in this embodiment is shown. The static contact group 9 is fixed to the accommodating member 8 and is used to be electrically connected to the external circuit. The static contact group 9 includes two static contacts 27 arranged along the X-axis direction. One of the two static contacts 27 is used to connect the power supply, and the other is used to connect the load. Each static contact 27 is provided with a static contact 28, and the static contact 28 faces the moving contact unit 3. Each static contact 27 has two static contacts 28, and the two static contacts 28 are arranged along the Z-axis direction.

[0095] See also Figure 7 and Figure 8 , Figure 7 and Figure 8 FIG. 1 shows a first magnetic conductive member group 10 in this embodiment. The first magnetic conductive member group 10 is arranged corresponding to the static contact member group 9 and is fixed to the housing 12. Figure 8 As shown, the first magnet group 10 includes a first magnet 29. The first magnet 29 is made of a magnetic material and is suitable for being placed in the receiving groove 16. After being inserted into the receiving groove, the first magnet 29 can be fixed to the housing 12 by dispensing. The first magnet 29 is provided with a main body 30 suitable for being inserted into the main body groove 17 and an insertion portion 31 suitable for being inserted into the insertion groove 18. The main body 30 extends along the Z-axis direction and is provided with a matching hole 32. The matching hole 32 passes through the main body 30 along the Y-axis direction. The insertion portion 31 is located below the main body 30 along the Z-axis direction and extends downward.

[0096] See also Figure 1 , Figure 1 FIG. 1 shows a separator group 11 in this embodiment. Figure 1As shown, the separator group 11 is arranged corresponding to the static contact group 9. The separator assembly 11 includes two separators 33, which are in sheet shape and made of high temperature resistant insulating material. In this embodiment, the separators 33 are made of ceramic material. The two separators 33 are arranged along the X-axis direction and are suitable for being inserted into the corresponding separation grooves 20 to be fixedly connected to the housing 12. The two separators 33 are located on both sides of the static contact group 9 along the X-axis direction.

[0097] See also Figures 9 to 11 , Figures 9 to 11 FIG. 3 shows the moving contact unit 3 in this embodiment. Fig. 9 As shown, the movable contact unit 3 moves relative to the fixed unit 2 along the Y-axis direction and includes a pushing member 34 , a connecting member 35 , a movable contact member group 36 , a second magnetic conductive member group 37 , an elastic bracket 38 , a limiting member 39 and a guiding member 40 .

[0098] like Fig. 9 As shown, the rear portion of the push member 34 along the Y-axis direction is provided with a push cavity 41, and the push cavity 41 opens to the right along the X-axis direction. Two second abutment surfaces 42 are provided on the two walls of the push cavity 41 that are opposite to each other along the Y-axis direction, and the two second abutment surfaces 42 are arranged opposite to each other along the Y-axis direction. In other embodiments, the two second abutment surfaces 42 can also be arranged to be separated from each other. The push member 34 is provided with a first through hole 43 along the Y-axis direction, and the first through hole 43 penetrates the push member 34 along a first straight line, and the first straight line extends along the Y-axis direction. Fig.11 As shown, a groove 44 is provided at the rear end of the first through hole 43. The groove 44 opens rearward, and the diameter of the groove 44 is larger than the diameter of the first through hole 43. Fig. 9 As shown, the front surface of the pusher 34 along the Y axis direction is provided with two connecting posts 45, the two connecting posts 45 are arranged along the Z axis direction, and the first through hole 43 is located between the two connecting posts 45 along the Z axis direction. The connecting posts 45 extend forward along the Y axis direction.

[0099] like Fig. 9 As shown, the connecting member 35 is made of metal material and is integrally formed with the push member 34 by insert injection molding. The connecting member 35 extends along the Z-axis direction. Both ends of the connecting member 35 along the Z-axis direction extend out of the push member 34 to form two connecting ends 46. Fig.11 As shown, a second through hole 47 is further provided in the middle of the connecting member 35 along the Z-axis direction, and the second through hole 47 penetrates the connecting member 35 along a first straight line.

[0100] like Fig. 9As shown, the moving contact group 36 is arranged correspondingly to the static contact group 9. The moving contact group 36 includes a moving contact 48. In this embodiment, the number of moving contacts 48 in the moving contact group 36 is two, and the two moving contacts 48 are arranged at intervals along the Z-axis direction. Each moving contact 48 is provided with a current bridge 49 and two moving contacts 50. The current bridge 49 extends along the X-axis direction, and the two moving contacts 50 are fixedly connected to the current bridge 49 and arranged along the X-axis direction. The two moving contacts 50 are suitable for contacting or moving away from the corresponding static contact 27 along the Y-axis direction. In this embodiment, the moving contact 50 and the static contact 28 are arranged correspondingly along the Y-axis direction. When the moving contact 50 moves away from the corresponding static contact 28 along the Y-axis direction, the moving contact 48 is disconnected from the static contact group 9 along the Y-axis direction, and the two static contacts 27 cannot be connected to each other. The relay 1 is in the off state, and the external circuit is turned off. When the moving contact 50 contacts the corresponding stationary contact 28 along the Y-axis direction, the moving contact 48 and the stationary contact group 9 are closed along the Y-axis direction, the two stationary contacts 27 are electrically connected through the moving contact 48, the relay 1 is in the on state, and the external circuit is turned on.

[0101] like Fig. 9 As shown, the second magnet group 37 is arranged corresponding to the moving contact group 36 and fixed relative to the moving contact group 36. The second magnet group 37 includes two second magnets 51, and the two second magnets 51 are arranged corresponding to the two moving contacts 48. Specifically, the second magnets 51 are made of magnetic conductive material, and each second magnet 51 is provided with a main body 52 and two extensions 53. The main body 52 extends along the Z-axis direction and is fixed to the back side of the overcurrent bridge 49 of the corresponding moving contact 48. The two extensions 53 extend from both ends of the main body 52 along the Z-axis direction along the closing direction Y1. In this embodiment, among the two extensions 53 of each second magnet 51, the extension 53 close to the other second magnet 51 is provided with a first part 54 and a second part 55 along the X-axis direction, and the first part 54 and the second part 55 are arranged at intervals along the X-axis direction.

[0102] like Fig. 9As shown, the elastic bracket 38 is arranged corresponding to the movable contact group 36. The elastic bracket 38 is used to install the corresponding movable contact group 36 and is provided with a frame body 56 and two elastic support parts 57. The frame body 56 is provided with a third through hole 58 in the middle part along the Z-axis direction. The third through hole 58 penetrates the frame body 56 along the first straight line. The frame body 56 is provided with two connecting holes 59 along the Z-axis direction. The third through hole 58 is located between the two connecting holes 59 along the Z-axis direction. The two connecting holes 59 are suitable for the corresponding connecting columns 45 to pass through. The two elastic support parts 57 are arranged corresponding to the two movable contacts 48 in the movable contact group 36 along the Y-axis direction. The two elastic support parts 57 are arranged along the Z-axis direction. Each elastic support part 57 is provided with two elastic arms 60, and the two elastic arms 60 extend from both sides of the frame body 56 along the X-axis direction respectively, and are at least partially inclined away from the pusher 34 along the Y-axis direction. The free ends of the two elastic arms 60 are respectively fixed to the back side of the overcurrent bridge 49 , and the positions where they are fixed to the overcurrent bridge 49 are respectively located at the back side of the two moving contacts 50 along the Y-axis direction.

[0103] like Fig. 9 As shown, the limit member 39 is arranged corresponding to the connecting member 35. The limit member 39 is provided with a limit portion 61 and two connecting portions 62. The limit portion 61 extends along the Z-axis direction and is perpendicular to the Y-axis direction. When the moving contact 48 is disconnected from the static contact group 9, the limit portion 61 abuts against the moving contact 48 along the disconnection direction Y2 to limit the distance between the moving contact 48 and the static contact group 9. A fourth through hole 63 is provided in the middle of the limit portion 61. The fourth through hole 63 is passed along the first straight line. The limit portion 61 is also provided with an avoidance hole 64 for each extension portion 53 of the second magnetic conductor group 37 to extend along the Y-axis direction. The connecting portion 62 extends from both ends of the limit portion 61 along the Z-axis direction along the disconnection direction Y2, and each connecting portion 62 is provided with an assembly hole 65, and the assembly hole 65 is adapted and fixed to the corresponding connecting end 46 of the connecting member 35.

[0104] like Fig. 9 As shown, in this embodiment, the guide member 40 is made of metal. The guide member 40 extends along the Y-axis direction, and a protrusion 66 is provided at a rear position along the Y-axis direction. The protrusion 66 is suitable for being placed in the groove 44 along the Y-axis direction.

[0105] like Fig. 9 , Fig.10 and Fig.11As shown, in this embodiment, the connecting column 45 is correspondingly inserted into the connecting hole 59, and the moving contact 48 is fixed to the elastic support portion 57 of the elastic bracket 38. Specifically, the two sides of the back of the overcurrent bridge 49 along the X-axis direction are respectively fixed to the free ends of the two elastic arms 60 of the same elastic support portion 57, so that the elastic bracket 38 is located between the pusher 34 and the moving contact group 36, and stores energy when the moving contact 48 and the static contact group 9 are closed, and releases energy when the moving contact 48 and the static contact group 9 are disconnected. The bodies 52 of the two second magnetic conductors 51 are fixed to the back of the overcurrent bridge 49 of the corresponding moving contact 48. The two assembly holes 65 of the limiter 39 are adapted and fixed to the corresponding connection ends 46, so that the limiter 39 is fixed relative to the pusher 34. When the moving contact 48 is disconnected from the static contact group 9, the limiting portion 61 of the limiting member 39 abuts against the two moving contacts 48 along the disconnection direction Y2 to limit the distance between the two moving contacts 48 and the static contact group 9. When the moving contact 50 does not abut against the static contact 28, the limiting member 39 acts on the elastic bracket 38 through the moving contact 48 to fix the frame 56 relative to the push member 34. When the moving contact 50 abuts against the static contact 28, the static contact 28 applies a reaction force to the moving contact 50 and acts on the elastic bracket 38 through the moving contact 48 to fix the frame 56 relative to the push member 34. Each extension portion 53 of the second magnetic conductive group 37 extends out of the avoidance hole 64 along the closing direction Y1. The guide member 40 is interference fit with the first through hole 43 of the push member 34 to fix the guide member 40 relative to the push member 34. The guide member 40 can also be fixed to the push member 34 by other methods such as insert injection molding. The protrusion 66 of the guide member 40 is located in the groove 44. The guide member 40 also passes through the second through hole 47, the third through hole 58 and the fourth through hole 63 along the first straight line. The guide member 40 passes through the interval between the first part 54 and the second part 55 of the same extension part 53. The guide member 40 is also located between the overcurrent bridges 49 of the two moving contacts 48 along the Z-axis direction. The guide member 40 is located in the middle of the two moving contacts 50 along the X-axis direction. The guide member 40 is located in the middle of the moving contact unit 3 along the Z-axis direction. The projection of the guide member 40 on the first projection plane perpendicular to the Z-axis intersects with the projection of the moving contact 48 on the first projection plane. In this embodiment, the guide member 40 is provided with a first guide portion 67 and a second guide portion 68. The first guide portion 67 extends out of the rear end face of the push member 34 along the disconnection direction Y2, and the second guide portion 68 extends out of the front end face of the limit member 39 along the closing direction Y1. The first guide portion 67 and the second guide portion 68 are both referred to as guide portions 69. In this embodiment, the first guide portion 67 and the second guide portion 68 are arranged only along the first straight line and slide with the fixed unit 2 along the first straight line. The first straight line is located in the middle of the two moving contacts 50 along the X-axis direction. In this embodiment, the guide portion 69 slides with the fixed unit 2 only along the first straight line, which means that when there is only one guide portion 69, the guide portion 69 extends along the Y-axis direction; and when there are more than two guide portions 69 (for example, the first guide portion 67 and the second guide portion 68 in this embodiment), each guide portion 69 is arranged only along the Y-axis direction.

[0106] See also Fig.11 , Fig.11 The elastic member 4 in this embodiment is shown. Fig.11 As shown, in this embodiment, the elastic member 4 is a spring. The elastic member 4 is located between the fixed unit 2 and the movable contact unit 3 along the Y-axis direction, and stores energy when the movable contact unit 3 moves along the disconnection direction Y2, and releases energy when the movable contact unit 3 moves along the closing direction Y1. In this embodiment, the elastic member 4 is sleeved on the first guide portion 67, and one end thereof elastically abuts against the protrusion 66.

[0107] See also Figure 12 to Figure 14 , Figure 12 to Figure 14 FIG. 5 shows a driving unit 5 in this embodiment. The driving unit 5 is used to drive the pusher 34 to move relative to the fixing unit 2 along the Y-axis direction. Fig.12 As shown, the driving unit 5 includes a magnetic circuit portion 70 and a rotating member 71 .

[0108] like Fig.12 As shown, the magnetic circuit part 70 includes a coil assembly 72 and an armature assembly 73. The coil assembly 72 is fixed to the housing 12, and is provided with two magnetic drive ends. The coil assembly 72 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 73 rotates around the first rotating shaft 74, and the first rotating shaft 74 extends along the Z-axis direction and rotates with the first rotating shaft hole 21. The magnetic circuit part 70 in this embodiment is a swinging magnetic circuit part 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 73 is also provided with a connecting groove 75, and the connecting groove 75 has two first abutting surfaces 76 opposite to each other. The connecting groove 75 is provided with an opening radially away from the coil assembly 72. In other embodiments, the two first abutting surfaces 76 can also be arranged away from each other.

[0109] like Figure 12 to Figure 14 As shown, the rotating member 71 rotates around the second rotating shaft 77, the second rotating shaft 77 extends along the Z-axis direction and rotates with the second rotating shaft hole 22, and the rotating member 71 is provided with a first end 78 and a second end 79 on both sides of the second rotating shaft 77. The first end 78 extends from the opening of the connecting groove 75 into the connecting groove 75 and is suitable for abutting the two first abutting surfaces 76. The second end 79 is the output end of the driving unit 5. The second end 79 is provided with two protrusions 81 along the Z-axis direction, and the two protrusions 81 are spaced apart along the Z-axis direction. In this embodiment, the rotating member 71 is further provided with a rearward pushing portion 80 between the second end 79 and the second rotating shaft 77.

[0110] Fig.12The state of the drive unit 5 when the armature assembly 73 rotates to the first rotation position is shown. At this time, the first end 78 of the rotating member 71 is pushed by the first abutting surface 76 located at the rear, so that the rotating member 71 rotates clockwise to the first position. Fig.13 The state of the drive unit 5 when the armature assembly 73 rotates to the second rotation position is shown. At this time, the first end 78 of the rotating member 71 is pushed by the first abutting surface 76 located in the front, so that the rotating member 71 rotates counterclockwise to the second position. When the rotating member 71 is in the second position, the position of the second end 79 is further forward along the Y-axis direction than the position of the second end 79 when the rotating member 71 is in the first position.

[0111] See also Fig.15 , Fig.15 FIG. 2 shows a micro switch 6 in this embodiment. The micro switch 6 is used to connect to the relay state sensing circuit to transmit a relay state signal to the relay state sensing circuit. Fig.15 As shown, the micro switch 6 is provided with a movable spring 82, the right end of the movable spring 82 along the X-axis direction is connected to the base of the micro switch 6, and the left end of the movable spring 82 is suitable for elastic rotation. When the left end of the movable spring 82 is pushed and deformed and approaches the base of the micro switch 6, the micro switch 6 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 82 is released and restores the deformation and moves away from the base of the micro switch 6, the micro switch 6 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 82 is pushed by the pushing portion 80. In other embodiments, the movable spring 82 can also be pushed by the pusher 34 or the armature assembly 73.

[0112] See also Fig.16 , Fig.16 FIG. 2 shows the shielding cover 7 in this embodiment. Fig.16 As shown, the shielding cover 7 has two shielding walls perpendicular to the Z-axis direction and a connecting wall for connecting the two shielding walls. The shielding cover 7 is disposed outside the accommodating member 8. Specifically, the two shielding walls of the shielding cover 7 are disposed above and below the coil assembly 72 along the Z-axis direction, and the connecting wall of the shielding cover 7 is disposed on the right side of the coil assembly 72 along the X-axis direction.

[0113] See also Figures 17 to 22 , Figures 17 to 22 The internal structure of the relay 1 in this embodiment is shown.

[0114] like Figures 17 to 19As shown, in this embodiment, the magnetic circuit portion 70 and the moving contact unit 3 are arranged at intervals on the right and left sides of the cavity along the X-axis direction. The first magnetic conductor 29 is placed in the accommodating groove 16 and fixed to the shell 12. Specifically, the main body 30 is placed in the main body groove 17, and the insertion portion 31 is placed in the insertion groove 18. The two blocking portions 19 are located on both sides of the first magnetic conductor 29 along the X-axis direction, and are located between the two static contacts 27 along the X-axis direction. The two partitions 33 are located on both sides of the static contact group 9 along the X-axis direction. One end of the elastic member 4 abuts the accommodating member 8, and the other end elastically abuts the protrusion 66. The first guide portion 67 is slidably matched with the first hole 25 along the first straight line. The second guide portion 68 is slidably matched with the matching hole 32 along the first straight line. In other embodiments, the second guide portion 68 can be slidably matched with the second hole 26 along the first straight line, or can be slidably matched with the matching hole 32 and the second hole 26 along the first straight line. The projection of the portion where the guide portion 69 slides with the fixed unit 2 on the first straight line does not overlap with the projection of the other portions of the movable contact unit 3 except the guide portion 68 on the first straight line. Specifically in this embodiment, the pusher 34, the connecting member 35, the movable contact member group 36, the second magnetic conductive member group 37, the elastic bracket 38 and the limiter 39 are located between the portion where the first guide portion 67 slides with the first hole 25 and the portion where the second guide portion 68 slides with the matching hole 32 along the Y-axis direction, regardless of the position of the movable contact unit 3. Of course, the other portions of the guide member 40 except the first guide portion 67 and the second guide portion 68 must not overlap with the above-mentioned slidingly matched portions. The coil assembly 72 is fixedly connected to the housing 12, the first rotating shaft 74 rotates with the first rotating shaft hole 21, the armature assembly 73 rotates relative to the housing 12 around the first rotating shaft 74, the second rotating shaft 77 rotates with the second rotating shaft hole 22, and the rotating member 71 rotates relative to the housing 12 around the second rotating shaft 77. The second end 79 of the rotating member 71 extends into the pushing cavity 41. The guide member 40 passes through the space between the two protrusions 81.

[0115] like Figures 17 to 19 As shown, when the armature assembly 73 rotates to the first rotation position, the rotating member 71 rotates to the first position, the second end 79 abuts against the second abutting surface 42 at the rear along the Y-axis direction, and pushes the pushing member 34 to move along the disconnection direction Y2 to deform the elastic member 4 and store energy, until the moving contact 48 is disconnected from the static contact member group 9, the relay 1 is in the off state, and the external circuit is turned off. At this time, the pushing portion 80 pushes against the moving spring 82, causing the moving spring 82 to deform, and the left end of the moving spring 82 is close to the base of the micro switch 6. The micro switch 6 is turned on, and the relay state sensing circuit senses that the relay 1 is in the off state.

[0116] like Figure 20 to Figure 22As shown, when the armature assembly 72 rotates to the second rotation position, the rotating member 71 rotates to the second position, the second end portion 79 abuts against the second abutting surface 42 in the Y-axis direction, and pushes the push member 34 to move in the closing direction Y1 to restore the elastic member 4 to its deformation and release energy, until the moving contact 48 and the static contact member group 9 are closed, the relay 1 is in the on state, and the external circuit is turned on. In this embodiment, the elastic member 4 is pre-compressed, that is, at this time, the elastic member 4 still applies an elastic force along the closing direction Y1 to the moving contact unit 3. At this time, the projection of the contact point between the second end portion 79 and the second abutting surface 42 on the first projection plane perpendicular to the Z-axis direction is located within the projection of the guide member 40 on the first projection plane. At this time, the push portion 80 is away from the moving spring 82, so that the left end of the moving spring 82 is released and restored to its deformation, and the left end of the moving spring 82 is away from the base of the micro switch 6, the micro switch 6 is turned off, and the relay state sensing circuit senses that the relay 1 is in the on state.

[0117] like Fig. 22 As shown in FIG. 1 , when the moving contact 48 and the stationary contact group 9 are closed, the extension portion 53 of the second magnetic conductor 51 approaches or abuts against the first magnetic conductor 29 along the closing direction Y1. Since the current flows through the overcurrent bridge 49 of the moving contact 48 along the X-axis direction, two magnetic circuits based on the current passing through the two overcurrent bridges 49 are formed between the first magnetic conductor 29 and the two second magnetic conductors 51. The two magnetic circuits are as shown in FIG. Fig. 22 As shown by the thick dotted line, a magnetic attraction is formed between the first magnetic conductor 29 and the second magnetic conductor 51. Since the first magnetic conductor 29 is fixed relative to the static contact assembly 9, and the second magnetic conductor 51 is fixed relative to the moving contact 48, the magnetic attraction keeps the moving contact 48 and the static contact assembly 9 in a closed state. The greater the current passing through the overcurrent bridge 49, the greater the magnetic attraction.

[0118] In this embodiment, the movable contact unit 3 is provided with a guide portion 69, and the guide portion 69 only slides with the fixed unit 2 along the first straight line, and the first straight line extends along the Y-axis direction. Therefore, when the guide portion 69 slides with the fixed unit 2, it will not cause jamming due to the two guides not being parallel to each other. Therefore, the driving force required to be output by the drive unit 5 is smaller than that of the prior art, and the energy consumption of the coil assembly 72 is lower than that of the prior art. The guide portion 69 is set to be located in the middle of the two movable contacts 50 along the X-axis direction, and the torque formed by the reaction force of the static contact group 9 on the movable contact 48 can also correct the posture of the movable contact 48 in a more balanced manner, so that the two movable contacts 50 of the movable contact 48 remain arranged along the X-axis direction, and then the two movable contacts 50 can apply the same force to the corresponding static contact 27.

[0119] In this embodiment, the guide portion 69 is located in the middle of the two moving contacts 50 along the X-axis direction, which reduces the size of the relay 1 along the X-axis direction, so that the structure is more compact and occupies less space.

[0120] In this embodiment, the moving contact unit 3 is provided with a guide portion 69, which slides with the fixed unit 2 to reduce the impact of debris that may be generated when the guide member 40 slides on the moving contact 50, avoid increasing the contact resistance, and thus better ensure the voltage resistance of the relay 1.

[0121] In this embodiment, the projection of the part where the guide part 69 slides with the fixed unit 2 on the first straight line does not overlap with the projection of the other parts of the moving contact unit 3 except the guide part 69 on the first straight line, which means that the part where the guide part 69 slides with the fixed unit 2 must be located only outside the other parts of the moving contact unit 3 except the guide part 69 along the Y-axis direction. Therefore, compared with the technical solution of setting the guide part 69 on one side or both sides of the moving contact unit 3 along the Z-axis direction, the sliding fit part has a smaller size along the Y-axis direction, smaller friction, smaller driving force of the driving unit 5, and smaller energy consumption of the coil assembly 72. At the same time, the sliding fit part is kept away from the contact position between the moving contact 48 and the stationary contact 27, so as to further reduce the influence of the debris generated by the sliding fit on the moving contact 50.

[0122] In this embodiment, the guide portion 69 is located in the middle of the moving touch unit 3 along the Z-axis direction, which can better guide the moving touch unit 3 to move along the Y-axis direction, making it difficult for the moving touch unit 3 to deflect up and down, thereby improving the stability of the movement of the moving touch unit 3.

[0123] In this embodiment, the overcurrent bridge 49 extends along the X-axis direction, and the two moving contacts 50 are fixedly connected to the overcurrent bridge 49. At this time, the safety distance between the moving contact 48 and the static contact 27 in the relay 1 is twice the actual distance when the moving contact 48 and the static contact 27 are disconnected. Therefore, the relay 1 has higher safety and stronger voltage resistance.

[0124] In this embodiment, the elastic bracket 38 is arranged between the pushing member 34 and the moving contact group 36. After the pushing member 34 experiences an overstroke, it can provide an elastic force to the moving contact 48 toward the static contact group 9, so that the moving contact 48 can be better closed with the static contact group 9. It can also generate additional repulsive force when the moving contact 48 is separated from the static contact group 9, helping the moving contact 48 to stay away from the static contact group 9.

[0125] In this embodiment, by providing the limiter 39, it is possible to ensure that the distance between the moving contact 36 and the stationary contact group 9 meets the design requirements. The first guide portion 67 is located behind the pusher 34, and the second guide portion 68 is located in front of the limiter 39. The first guide portion 67 and the second guide portion 68 are both formed on the guide member 40, so that the moving contact unit 3 can slide with the fixed unit 2 in the front and back of the Y-axis direction, and the guiding effect is better, and the stability of the movement of the moving contact unit 3 is higher.

[0126] In this embodiment, the connecting member 35 and the pushing member 34 are integrally formed by insert injection molding, so that the limiting member 39 is easier to fix relative to the pushing member 34, and the limiting member 39 has stronger rigidity and better limiting effect on the moving contact member 48.

[0127] In this embodiment, the first magnetic conductive group 10 is relatively fixed to the static contact group 9, and the second magnetic conductive group 37 is relatively fixed to the moving contact group 36. The first magnetic conductive group 10 and the second magnetic conductive group 37 form a magnetic circuit based on the current passing through the overcurrent bridge 49, which can form a magnetic attraction between the first magnetic conductive group 10 and the second magnetic conductive group 37. Therefore, when the relay 1 is impacted by a large fault current, the moving contact 48 and the static contact group 9 are less likely to disengage, thereby avoiding the generation of destructive arcs that damage the relay 1.

[0128] In this embodiment, the first hole 25 that slides with the first guide portion 67 is formed by plugging the housing 12 and the cover 13, so it is more convenient to install. The second hole 26 that slides with the second guide portion 68 is formed by plugging the housing 12 and the cover 13, so it is more convenient to install. The second guide portion 68 slides with the second hole 26, and debris is less likely to leave the second hole 26, which has less impact on the moving contact 50 and the static contact 28, and can avoid the increase of contact resistance, so the withstand voltage capacity of the relay 1 can be better guaranteed.

[0129] In this embodiment, the second guide portion 68 is slidably matched with the first magnetic conductive group 10. Since both the second guide portion 68 and the first magnetic conductive group 10 can be made of metal materials, compared with the sliding match between the second guide portion 68 and the accommodating member 8, less debris can be formed near the moving contact 50 and the static contact 28, and the impact on the moving contact 50 and the static contact 28 is smaller, which can avoid the increase of contact resistance, and thus the voltage resistance of the relay 1 can be better guaranteed.

[0130] In this embodiment, the first magnet group 10 is provided with the first magnet 29, which is more convenient to install. The second magnet 51 is provided corresponding to the moving contact 48 in the moving contact group 36, so that a magnetic circuit can be formed around each moving contact 48, so that each moving contact 48 is not easy to be separated from the stationary contact group 9. The extension part 53 extends from both ends of the body 52 along the closing direction Y1, so when the moving contact 48 and the stationary contact group 9 are closed, the air gap between the first magnet 29 and the second magnet 51 is smaller, the magnetic resistance of the magnetic circuit is smaller, and the moving contact 48 is less likely to be separated from the stationary contact group 9.

[0131] In this embodiment, by providing a barrier 19 on the accommodating member 8 to separate the first magnetic conductor 29 from the stationary contacts 27 on both sides, the two stationary contacts 27 are less likely to be short-circuited through the first magnetic conductor 29 in the middle.

[0132] In this embodiment, the guide member 40 is located between the current bridges 49 of the two moving contacts 48 along the Z-axis direction, so that the guiding effect of the guide member 40 on each moving contact 48 is the same along the Z-axis direction, and each moving contact 48 is less likely to deflect up and down. The guide member 40 passes through the gap between the first portion 54 and the second portion 55, which, on the one hand, enables the second magnetic conductor 51 to give way to the guide member 40, and on the other hand, can form a magnetic circuit on both sides of the guide member 40 along the X-axis direction to ensure magnetic efficiency, and make the moving contact 48 receive the same force on both sides of the guide member 40 along the X-axis direction, so that the moving contact 48 is less likely to deflect left and right.

[0133] In this embodiment, the elastic member 3 stores energy due to deformation when the moving contact member 48 moves in the disconnecting direction, and releases energy due to restoring the deformation when the moving contact member 48 moves in the closing direction. This can better help the moving contact unit 3 to start from the disconnected position and approach the static contact member group 9, which is beneficial to increase the movement stroke of the moving contact member 48, and therefore also helps to increase the safety distance between the moving contact member 48 and the static contact member 27.

[0134] In this embodiment, the elastic member 4 is sleeved on the first guide portion 67 , one end of which abuts against the accommodating member 8 , and the other end elastically abuts against the movable contact unit 3 , so that the structure is more compact and occupies less space.

[0135] In this embodiment, when the moving contact 48 is closed with the static contact group 9, the elastic member 4 applies an elastic force to the moving contact unit 3 along the closing direction Y1, which can improve the stability of the moving contact 3 and the static contact group 9 in the closed state, and further improve the short-circuit resistance, that is, improve the ability of the relay 1 to prevent the moving contact 48 from being detached from the static contact group 9 when it is subjected to a large fault current.

[0136] This embodiment can effectively amplify the tangential movement stroke of the armature assembly 73 by adopting a swinging magnetic circuit portion, which is beneficial to increase the safety distance between the moving contact 48 and the stationary contact assembly 9.

[0137] In this embodiment, the magnetic circuit portion 70 and the moving contact unit 3 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 3, so that the structure is more compact and occupies less space; at the same time, it can prevent the magnetic circuit portion 70 from affecting the linear movement of the moving contact unit 3 along the Y-axis direction, thereby ensuring a larger safety distance between the moving contact 50 and the static contact 28.

[0138] In this embodiment, the tangential component of the movement of the armature assembly 73 is transmitted to the pushing member through the rotating member 71. On the one hand, it is convenient to adjust the interval between the magnetic circuit part 70 and the moving contact unit 3 along the X-axis direction. On the other hand, compared with the technical solution of directly extending the swing arm from the armature assembly 73, the ratio of the resistance arm to the power arm is smaller, and the required magnetic driving force is smaller.

[0139] In this embodiment, the second end 79 extends into the pushing cavity 41, so that the pusher 34 and the rotating member 71 can be more closely matched. By providing two protrusions 81 spaced apart along the Z-axis direction, the guide member 40 can be made to give way.

[0140] In this embodiment, when the moving contact 48 is closed with the static contact group 9, the projection of the contact point between the second end 79 and the second abutment surface 42 on the first projection plane is located within the projection of the guide member 40 on the first projection plane, which means that when the moving contact 48 is closed with the static contact group 9, the force point of the moving contact unit 3 is within the width range of the guide member 40, so that the moving contact unit 3 will not generate a deflection torque, thereby ensuring that the moving contact 48 is correctly closed with the static contact group 9 along the Y-axis direction.

[0141] Since the current directions of the two moving contacts 50 are opposite, when the moving contact 48 is disconnected from the stationary contact group 9, the arc generated between the two moving contacts 50 and the corresponding stationary contact 28 will propagate outward along the X-axis direction due to the repulsive Lorentz magnetic force. In this embodiment, by providing separators 33 on both sides of the stationary contact group 9 along the X-axis direction, and the separators 33 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.

[0142] In this embodiment, the state of the relay 1 can be transmitted to the external relay state sensing circuit by providing the micro switch 6. At the same time, the dynamic spring 82 of the micro switch 6 can also provide thrust for the movement of the dynamic contact unit 3 along the closing direction Y1, so that the dynamic contact 48 and the static contact group 9 are closed faster.

[0143] 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, comprising a fixed unit (2) and a moving contact unit (3), wherein the fixed unit (2) comprises a stationary contact group (9), wherein the stationary contact group (9) comprises two stationary contacts (27) arranged along the X-axis direction; the moving contact unit (3) moves relative to the fixed unit (2) along the Y-axis direction and comprises a moving contact group (36) arranged corresponding to the stationary contact group (9), wherein the moving contact group (36) comprises a moving contact (48), wherein the moving contact (48) is suitable for closing or opening with the stationary contact group (9) along the Y-axis direction and is provided with two moving contacts (50) corresponding to the stationary contacts (27), wherein the two moving contacts (50) are arranged along the X-axis direction; Its characteristics are: The movable contact unit (3) is provided with a guide portion (69), and the guide portion (69) is only slidably matched with the fixed unit (2) along a first straight line, and the first straight line extends along the Y-axis direction and is located in the middle of the two movable contacts (50) along the X-axis direction; the projection of the part where the guide portion (69) is slidably matched with the fixed unit (2) on the first straight line does not overlap with the projection of other parts of the movable contact unit (3) except the guide portion (69) on the first straight line.

2. A relay as claimed in claim 1, characterized in that: The guide portion (69) is located in the middle of the moving contact unit (3) along the Z-axis direction.

3. A relay as claimed in claim 1, characterized in that: The moving contact (48) is provided with a current-passing bridge (49), the current-passing bridge (49) extends along the X-axis direction, and two moving contact points (50) are fixedly connected to the current-passing bridge (49).

4. A relay as claimed in claim 3, characterized in that: The movable contact unit (3) further comprises a pushing member (34), an elastic bracket (38), a limiting member (39) and a guiding member (40); the elastic bracket (38) and the limiting member (39) are both arranged corresponding to the movable contact member group (36); the elastic bracket (38) is located between the pushing member (34) and the movable contact member group (36) along the Y-axis direction; the limiting member (39) is fixed relative to the pushing member (34) and moves along the disconnection direction (Y2) when the movable contact member (48) is disconnected from the static contact member group (9). Abutting against the moving contact (48) to limit the distance between the moving contact (48) and the static contact group (9); the guide member (40) is fixed relative to the pushing member (34) and extends along a first straight line, and the guide member (40) is provided with a first guide portion (67) extending from the pushing member (34) along a disconnecting direction (Y2) and a second guide portion (68) extending from the limiting member (39) along a closing direction (Y1), and the first guide portion (67) and the second guide portion (68) are both the guide portion (69).

5. A relay as claimed in claim 4, characterized in that: The movable contact unit (3) further comprises a connecting member (35), the connecting member (35) being arranged correspondingly to the limiting member (39) and being insert-molded integrally with the pushing member (34); the two ends of the connecting member (35) along the Z-axis direction respectively extend out of the pushing member (34), and the limiting member (39) is fixedly connected to the two ends of the connecting member (35).

6. A relay as claimed in claim 4, characterized in that: The fixed unit (2) also includes a receiving member (8) and a first magnetic conductive group (10), and the moving contact unit (3) also includes a second magnetic conductive group (37); the first magnetic conductive group (10) and the static contact member group (9) are arranged correspondingly and are both fixed to the receiving member (8); the second magnetic conductive group (37) and the moving contact member group (36) are arranged correspondingly and are fixed relative to the moving contact member group (36); when the moving contact member (48) and the static contact member group (9) are closed, the second magnetic conductive group (37) approaches the first magnetic conductive group (10) along the closing direction (Y1) so that the first magnetic conductive group (10) and the second magnetic conductive group (37) form a magnetic circuit based on the current passing through the overcurrent bridge (49); the first guide portion (67) is in sliding cooperation with the receiving member (8), and the second guide portion (68) is in sliding cooperation with the receiving member (8) and / or the first magnetic conductive group (10).

7. A relay as claimed in claim 6, characterized in that: The accommodating member (8) comprises a shell (12) and a cover body (13); the shell (12) is provided with a first groove (14); the cover body (13) is fixedly connected to the shell (12) and is provided with a first plug block (23) extending into the first groove (14) along the Z-axis direction; a first hole (25) opening along a closing direction (Y1) is formed between the bottom of the first groove (14) and the first plug block (23); the first guide portion (67) is slidably matched with the first hole (25) along a first straight line.

8. A relay as claimed in claim 7, characterized in that: The first magnetic conductor group (10) is provided with a matching hole (32), and the second guide portion (68) is slidably matched with the matching hole (32) along a first straight line.

9. A relay as claimed in claim 7 or 8, characterized in that: The shell (12) is provided with a second groove (15), and the cover body (13) is provided with a second plug block (24) extending into the second groove (15) along the Z-axis direction, and a second hole (26) opening along the disconnection direction (Y2) is formed between the groove bottom of the second groove (15) and the second plug block (24), and the second guide portion (68) and the second hole (26) are slidably matched along a first straight line.

10. A relay as claimed in claim 6, characterized in that: The first magnetic conductor group (10) includes a first magnetic conductor (29), which extends along the Z-axis direction and is located between two static contacts (27) along the X-axis direction; the number of moving contacts (48) in the moving contact group (36) is more than two, and each moving contact (48) is arranged along the Z-axis direction; the second magnetic conductor group (37) includes a second magnetic conductor (51), which is arranged corresponding to the moving contacts (48) in the moving contact group (36) and is provided with a main body (52) and an extension part (53), wherein the main body (52) is fixedly connected to the back side of the current bridge (49) and extends along the Z-axis direction, and the extension part (53) extends from both ends of the main body (52) along the closing direction (Y1).

11. A relay as claimed in claim 10, characterized in that: The accommodating member (8) is provided with two baffles (19), and the two baffles (19) are located on both sides of the first magnetic conductor (29) along the X-axis direction and between the two stationary contact members (27).

12. A relay as claimed in claim 11, characterized in that: The number of the moving contacts (48) in the moving contact group (36) is two, and the guide member (40) is located between the current bridges (49) of the two moving contacts (48) along the Z-axis direction; in the second magnetic conductor (51), an extension portion (53) close to the guide member (40) along the Z-axis direction is provided with a first portion (54) and a second portion (55) along the X-axis direction, and the first portion (54) and the second portion (55) are arranged at intervals along the X-axis direction, and the guide member (40) passes through the interval between the first portion (54) and the second portion (55).

13. A relay as claimed in claim 6, characterized in that: It also includes an elastic member (4), which is located between the fixed unit (2) and the movable contact unit (3) along the Y-axis direction, and stores energy when the movable contact unit (3) moves along the disconnecting direction (Y2), and releases energy when the movable contact unit (3) moves along the closing direction (Y1).

14. A relay as claimed in claim 13, characterized in that: The elastic member (4) is sleeved on the first guide portion (67), one end of which abuts against the accommodating member (8), and the other end of which elastically abuts against the moving contact unit (3).

15. A relay as claimed in claim 14, characterized in that: When the moving contact member (48) and the stationary contact member group (9) are closed, the elastic member (4) applies an elastic force to the moving contact unit (3) along the closing direction (Y1).

16. A relay as claimed in claim 4, characterized in that: It also includes a driving unit (5), which is used to drive the pushing member (34) to move relative to the fixed unit (2) along the Y-axis direction and includes a magnetic circuit part (70), wherein the magnetic circuit part (70) includes a coil assembly (72) and an armature assembly (73), wherein the coil assembly (72) is fixed to the accommodating member (8) and drives the armature assembly (73) to rotate around a first rotating shaft (74) extending along the Z-axis direction, and the output end of the driving unit (5) abuts against the pushing member (34) along the Y-axis direction to convert the rotation of the armature assembly (73) into a linear motion of the pushing member (34) along the Y-axis direction.

17. A relay as claimed in claim 16, characterized in that: The magnetic circuit portion (70) and the moving contact unit (3) are arranged along the X-axis direction.

18. A relay as claimed in claim 17, characterized in that: The driving unit (5) further comprises a rotating member (71), wherein the rotating member (71) rotates around a second rotating shaft (77) extending along the Z-axis direction and is provided with a first end (78) and a second end (79) on both sides of the second rotating shaft (77), wherein the second end (79) is an output end of the driving unit (5), and the armature assembly (73) is provided with two first abutting surfaces (76) opposite to or opposite to each other, wherein the first end (78) is suitable for abutting the two first abutting surfaces (76), and the pushing member (34) is provided with two second abutting surfaces (42) opposite to or opposite to each other along the Y-axis direction, wherein the second end (79) is suitable for abutting the two second abutting surfaces (42).

19. A relay as claimed in claim 18, characterized in that: The pushing member (34) is provided with a pushing cavity (41), two second abutting surfaces (42) are arranged on two opposite walls of the pushing cavity (41) along the Y-axis direction, the second end portion (79) extends into the pushing cavity (41) and is provided with two protrusions (81) along the Z-axis direction, the two protrusions (81) are arranged at intervals along the Z-axis direction, and the guide member (40) passes through the interval between the two protrusions (81).

20. A relay as claimed in claim 18, characterized in that: When the moving contact (48) and the stationary contact group (9) are closed, the projection of the contact point between the second end (79) and the second abutment surface (42) on the first projection plane is located within the projection of the guide member (40) on the first projection plane, and the first projection plane is perpendicular to the Z-axis direction.

21. An electric meter, characterized in that: It comprises a relay (1) as claimed in any one of claims 1 to 20.

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