CN219040364U - Single-drive multi-fracture relay - Google Patents

Abstract

The utility model discloses a single-drive multi-fracture relay, which comprises a group of magnetic circuit driving mechanisms and at least one group of independent switch units; each group of switch units is provided with two groups of contact assemblies, and each group of contact assemblies is provided with at least one pair of matched moving contacts and fixed contacts; at the same time, at least one moving contact in one group of contact assemblies is also connected in series with at least one moving contact in the other group of contact assemblies in a one-to-one correspondence manner respectively; wherein, a set of magnetic circuit actuating mechanism can control the break-make action of two sets of contact assemblies in each independent switch unit simultaneously. The utility model not only reduces parts and cost, but also simplifies the structure and reduces the occupied space, and at the same time, at least more than two groups of independently arranged switch devices control on-off through a group of magnetic circuit driving mechanisms, thereby realizing the synchronism of on-off control and further meeting the use requirement of synchronous and accurate control by using a plurality of switches.

Description

Single-drive multi-fracture relay

Technical Field

The utility model relates to the technical field of relays, in particular to a single-drive multi-fracture relay.

Background

The relay is an electronic control device, which has a control system (also called an input loop) and a controlled system (also called an output loop), is generally applied to an automatic control circuit, and is actually an automatic switch for controlling larger current by smaller current, so that the relay plays roles of automatic regulation, safety protection, conversion circuit and the like in the circuit.

An electromagnetic relay is an electrical relay that operates by utilizing the attractive force generated between an electromagnet core and an armature by current in an input circuit. The existing electromagnetic relay generally adopts a single magnetic circuit driving mechanism to control the on-off of a single contact system/switching device so as to realize the electric switching-off or switching-on of a main loop controlled by the relay. However, if the three-phase system or other circuits or devices requiring simultaneous control of more than two groups of relays are used, it is difficult to achieve control synchronicity of a plurality of independently arranged switching devices, and meanwhile, a plurality of magnetic circuit driving mechanisms are required to respectively control a plurality of independent switching devices, so that the three-phase system has the advantages of more parts, complex structure, high manufacturing cost, large occupied space and difficulty in meeting the use requirements in aspects such as miniaturization.

In addition, when the main circuit has unexpected fault current or the relay has problems, the existing electromagnetic relay may cause adhesion between the moving contact and the fixed contact of the contact system, so that the main circuit cannot be reliably disconnected, and the work of equipment is affected. Moreover, the contact resistance between the contacts of the existing electromagnetic relay is overlarge, so that the contacts are heated seriously and form fusion welding, the movable contact and the static contact of the product are unreliable to contact, and the performance of the relay is seriously problematic.

In view of this, the present utility model has been made.

Disclosure of Invention

In order to overcome the defects, the utility model provides the single-drive multi-fracture relay, which adopts a single-group magnetic circuit driving mechanism, reduces parts, simplifies the structure, can improve the control synchronism of more than two groups of independent switching devices and meets the use requirements of special occasions.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a single-drive multi-break relay comprises a group of magnetic circuit driving mechanisms and at least one group of independent switch units; each group of the switch units is provided with two groups of contact assemblies, each group of contact assemblies is provided with at least one moving contact and at least one fixed contact which is respectively arranged in a one-to-one opposite manner with the moving contacts; at the same time, at least one moving contact in one group of contact assemblies is also connected in series with at least one moving contact in the other group of contact assemblies in a one-to-one correspondence manner; the magnetic circuit driving mechanism can simultaneously control the on-off actions of two groups of contact assemblies in each group of independent switch units.

As a further improvement of the utility model, the magnetic circuit driving mechanism comprises a magnetic force source which can drive the moving contacts of the two groups of contact assemblies in each group of the switch units to be contacted with the fixed contacts simultaneously so as to realize the connection and the disconnection.

As a further improvement of the utility model, the magnetic force source is a single-core electromagnet, and the single-core electromagnet is composed of a magnetic iron core and a group of coils wound outside the magnetic iron core.

As a further improvement of the utility model, the magnetic force source is formed by connecting at least two single-core electromagnets in series, and the single-core electromagnets are composed of a magnetic iron core and a group of coils wound outside the magnetic iron core.

As a further improvement of the utility model, the magnetic force source is a multi-core electromagnet, and the multi-core electromagnet is composed of a plurality of magnetic iron cores and a group of coils wound outside the magnetic iron cores at the same time.

As a further improvement of the utility model, the magnetic circuit driving mechanism further comprises at least one group of driving transfer components, and the magnetic force source drives the on-off action of the moving contact and the fixed contact through the driving transfer components.

As a further improvement of the utility model, when the switch units are N groups, N is more than or equal to 1 natural number, the driving transfer assembly is one group, and at least two moving contacts in each group of contact assemblies in each group of switch units are respectively connected with the matched fixed contacts in a sucking way or disconnected in a far way.

As a further improvement of the utility model, when the switch units are N groups, N is a natural number more than or equal to 1, the driving transfer components are N groups, namely, a group of driving transfer components are arranged corresponding to each group of independent switch units, and the driving transfer components are used for driving at least two moving contacts in two groups of contact components in the corresponding group of switch units to be respectively connected with the fixed contacts matched with the moving contacts in a sucking way or be separated from the fixed contacts.

As a further improvement of the utility model, when the switch units are N groups, N is a natural number more than or equal to 1, the driving transfer assemblies are 2N groups, namely two groups of driving transfer assemblies are arranged corresponding to each group of independent switch units, and each two groups of driving transfer assemblies are respectively used for driving at least two moving contacts in two groups of contact assemblies in a corresponding group of switch units to be respectively connected with the fixed contacts matched with the moving contacts in a sucking way or be separated from the fixed contacts in a separating way.

As a further improvement of the present utility model, based on the state in which the single-drive multiple-break relay is placed upright, that is, based on the state in which a group of the magnetic circuit driving mechanisms is located above the switching unit: the magnet core of magnetic force source transversely sets up along the horizontal direction, drive transfer subassembly includes yoke, armature and return spring, the yoke transversely is located the downside next door of coil, and simultaneously with the tail end of magnet core is connected, simultaneously the armature still with the rear end side of yoke rotates to be connected, and forms the fulcrum of rotation in the junction, namely: the armature can swing in a lever type around the rotating fulcrum; a return spring is connected between the bottom wall of the yoke and the lower part of the armature; when the coil applies a set voltage, the armature can deflect forward, so that the upper end of the armature is in attraction connection with the head end of the magnet core, and the lower end of the armature swings downwards in a tilting manner to enable the moving contact to be in contact conduction with the fixed contact; and when the coil is powered off, the armature can reversely deflect under the action of the return spring, so that the upper end of the armature is disconnected with the head end of the magnet core, and the lower end of the armature swings upwards in an inclined manner to be disconnected with the moving contact and the fixed contact.

As a further improvement of the present utility model, in the drive relay assembly, the front end side of the yoke is fixedly connected with the rear end of the magnet core through a connecting plate.

As a further development of the utility model, the armature has a first vertically arranged section, a second horizontally arranged section, and a connecting section connected between the first section and the second section, wherein the first section is vertically arranged beside the head end of the magnet core, the connecting section is rotationally connected with the rear end side of the yoke, and the second section is arranged below the yoke and fixedly connected with the rear side of the movable spring through an injection molding piece.

As a further improvement of the utility model, when each group of contact assemblies is provided with more than two moving contacts and fixed contacts which are arranged in a one-to-one opposite way, the more than two moving contacts are arranged at intervals along the first direction; simultaneously, at least two moving contacts in one group of contact assemblies are respectively connected in series in one-to-one correspondence to at least two moving contacts in the other group of contact assemblies, so that the two groups of contact assemblies form at least two switch branches; and at least two switch branches are connected in parallel.

As a further improvement of the utility model, the moving contact in one group of the contact assemblies is defined as a moving contact A, and the moving contact in the other group of the contact assemblies is defined as a moving contact B; correspondingly, the fixed contacts which are arranged in one-to-one opposite to the moving contacts A are defined as fixed contacts A, and the fixed contacts which are arranged in one-to-one opposite to the moving contacts B are defined as fixed contacts B; at least two moving contacts A are respectively connected with at least two moving contacts B in series in a one-to-one correspondence manner through conductive pieces; and the moving contact A and the moving contact B which are connected in series, the fixed contact A which is arranged opposite to the moving contact A and the fixed contact B which is arranged opposite to the moving contact B form a switch branch together.

As a further improvement of the utility model, at least two moving contacts in each group of contact assemblies are respectively asynchronous with the action of closing and connecting or opening the fixed contacts matched with the moving contacts.

As a further improvement of the utility model, each group of switch units is respectively provided with two movable reeds, at least two movable contacts which are arranged at intervals along the first direction are respectively arranged on the two movable reeds, and the two movable reeds are respectively connected with the lower end of an armature in a driving transfer assembly of the magnetic circuit driving mechanism; in each group of switch units, two leading-out sheets are respectively arranged, the two leading-out sheets are respectively arranged in one-to-one opposite to the two movable reeds, and at least two fixed contacts which are arranged at intervals along the first direction are respectively arranged on the two leading-out sheets.

As a further improvement of the utility model, in each group of the switch units, two movable reeds are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction; correspondingly, in each group of switch units, the two lead-out sheets are also arranged at intervals along the second direction.

As a further improvement of the utility model, in each group of switch units, at least two riveting holes A which are distributed at intervals along the first direction are respectively arranged on two movable reeds, and at least two movable contacts are respectively riveted and fixed in at least two riveting holes A; in each group of switch units, at least two riveting holes B which are distributed at intervals along the first direction are respectively arranged on the two leading-out sheets, and at least two fixed contacts are respectively riveted and fixed in at least two riveting holes B.

As a further improvement of the present utility model, the time sequence of the attraction communication of at least two moving contacts in each group of contact assemblies with the fixed contacts matched with the moving contacts respectively, and the distance between the at least two moving contacts and the actuating end of the magnetic circuit driving mechanism are in inverse proportion, namely: the time of the suction communication between the moving contact close to the execution end of the magnetic circuit driving mechanism and the fixed contact is later than the time of the suction communication between the moving contact far away from the execution end of the magnetic circuit driving mechanism and the fixed contact; in addition, the time sequence of the disconnection of at least two moving contacts in each group of contact assemblies and the fixed contacts matched with the moving contacts is in direct proportion to the distance between the moving contacts and the executing end of the magnetic circuit driving mechanism, namely: the time for disconnecting the moving contact close to the execution end of the magnetic circuit driving mechanism from the fixed contact is earlier than the time for disconnecting the moving contact far from the execution end of the magnetic circuit driving mechanism from the fixed contact; wherein, the lower end of the armature is used as the actuating end of the magnetic circuit driving mechanism.

As a further improvement of the utility model, one group of magnetic circuit driving mechanisms can drive the two movable reeds in each group of independent switch units to synchronously swing towards or back to the two leading sheets in an inclined way, so that at least two movable contacts in each group of contact assemblies in each group of switch units are respectively asynchronous with the action of sucking connection or disconnection of the fixed contacts matched with the movable contacts.

As a further improvement of the utility model, the upper sides of at least two of the stationary contacts in each group of contact assemblies are not in the same height plane.

As a further improvement of the utility model, the conductive piece adopts a flexible connecting piece, the flexible connecting piece comprises a wire and two metal connectors which are respectively and fixedly connected to two ends of the wire, and the two metal connectors are respectively used for being connected with the moving contact A and the moving contact B.

As a further improvement of the utility model, the wire is a single-strand wire or a multi-strand wire; the metal connector adopts square copper tube head, the metal connector with wire one end welding links firmly, simultaneously the metal connector still with moving contact A or moving contact B riveting links firmly.

As a further improvement of the utility model, the conductive piece adopts a flexible connecting piece, the flexible connecting piece is a flexible copper bar formed by stacking a plurality of copper foils, and two ends of the flexible copper bar are respectively used for being connected with the moving contact A and the moving contact B.

The beneficial effects of the utility model are as follows:

firstly, the utility model simultaneously controls at least more than two groups of independently arranged switch devices through one group of magnetic circuit driving mechanisms, thereby not only reducing parts and cost, but also simplifying the structure and reducing occupied space, and simultaneously, the at least more than two groups of independently arranged switch devices control on-off through one group of magnetic circuit driving mechanisms, thereby realizing the synchronism of on-off control and further meeting the synchronous and accurate control requirements of multi-path independent systems needing synchronous control, such as a three-phase system or other use occasions.

Secondly, in each group of switch devices, the utility model forms two groups of contact assemblies into at least two switch branches connected in parallel, thus greatly reducing the resistance of the contact assemblies and improving the load bearing capacity of the relay; on the other hand, in each group of switch devices, by arranging two groups of contact assemblies, when a product has a problem or unexpected fault current occurs in a loop and the contacts of a relay are possibly adhered, the two groups of contact assemblies are controlled independently of each other, so that even if the movable contact and the fixed contact in one group of contact assemblies are adhered, the other group of contact assemblies can realize instant disconnection of a main loop, and the safety of an electric loop is ensured. Therefore, the contact assembly provided by the utility model greatly reduces the unreliable risk of adhesion.

Moreover, the utility model realizes that the moving contact far from the executing end of the magnetic circuit driving mechanism is firstly closed and then opened by controlling the action sequence of the attraction connection or disconnection of at least two moving contacts in each group of contact assemblies and the fixed contact matched with the moving contacts; a relay working mode of closing after a movable contact and a fixed contact close to the execution end of the magnetic circuit driving mechanism and opening first; because the moving contact and the fixed contact which are far away from the execution end of the magnetic circuit driving mechanism are firstly closed and then opened; the relay can bear the arcing energy of the electric arc generated when the relay is closed or opened, so that the moving and static contacts which are closed later and opened earlier can well avoid the risks of being ablated and damaged by the electric arc, and can be effectively protected, thereby the performance of the relay product can be well optimized and improved, and the use risk of equipment can be reduced.

Drawings

Fig. 1 is a schematic perspective view of a single-drive multi-break relay according to embodiment 1 of the present utility model in a first view angle;

fig. 2 is a schematic perspective view of a single-drive multi-break relay according to embodiment 1 of the present utility model in a second view angle;

FIG. 3 is a schematic side view (left view) of a single-drive multi-break relay according to embodiment 1 of the present utility model;

FIG. 4 is a schematic diagram of a single-drive multi-break relay according to embodiment 1 of the present utility model;

FIG. 5 is a third schematic side view (front view) of the single-drive multi-break relay according to embodiment 1 of the present utility model;

fig. 6 is a schematic view of the contact assembly of embodiment 1 of the present utility model assembled with the armature and at a first view angle;

fig. 7 is a schematic view of the contact assembly of embodiment 1 of the present utility model assembled with the armature and at a second view angle;

fig. 8 is a schematic view of the two contact assemblies according to embodiment 1 of the present utility model when assembled together;

fig. 9 is a second schematic structural view of the two contact assemblies according to embodiment 1 of the present utility model when assembled together;

fig. 10 is a schematic circuit diagram of the contact assembly of embodiment 1 of the present utility model when two sets of contact assemblies are assembled together;

fig. 11 is a driving schematic block diagram of embodiment 1 of the present utility model;

fig. 12 is a driving schematic block diagram of embodiment 2 of the present utility model;

fig. 13 is a driving schematic block diagram of embodiment 3 of the present utility model;

fig. 14 is a driving schematic block diagram of embodiment 4 of the present utility model;

fig. 15 is a driving schematic block diagram of embodiment 5 of the present utility model;

Fig. 16 is a driving schematic block diagram of embodiment 6 of the present utility model;

fig. 17 is a schematic perspective view of a single-drive multi-break relay according to embodiment 5 of the present utility model in a first view angle;

fig. 18 is a schematic perspective view of a single-drive multi-break relay according to embodiment 5 of the present utility model in a second view angle;

fig. 19 is a schematic perspective view of a single-drive multi-break relay according to embodiment 5 of the present utility model in a third view angle.

The following description is made with reference to the accompanying drawings:

1. a contact assembly; 10. a moving contact; 100. a moving contact A; 101. a moving contact B;

11. a stationary contact; 110. a fixed contact A; 111. a fixed contact B; 12. a conductive member; 120. a wire; 121. a metal connector; 13. a movable reed; 14. a lead-out sheet; 3. a magnetic circuit driving mechanism; 30. a coil; 31. a magnetic core; 32. a yoke; 33. an armature; 330. a first section; 331. a second section; 332. a joining section; 30A, a magnetic force source; 30B, driving a transit assembly; K. a switching unit; k1, a first switch unit; k2, a second switch unit.

Detailed Description

A preferred embodiment of the present utility model will be described in detail with reference to the accompanying drawings.

Referring to fig. 1 to 10, a single-drive multi-break relay provided in this embodiment 1 has a set of magnetic circuit driving mechanisms 3 and a set of switching units K, and is described in detail below:

The switch unit K has two groups of contact assemblies 1, each group of contact assemblies 1 has at least one moving contact 10 and at least one fixed contact 11 which is respectively opposite to the moving contacts 10, and the corresponding moving contacts and fixed contacts are called contact pairs, that is, the contact pairs in each group of contact assemblies 1 can be arranged into one group or multiple groups, referring to fig. 1 and 2, the embodiment uses two groups of contacts in each group of contact assemblies as an example, and of course, the contact pairs in each group of contact assemblies can also be arranged into one group or three groups and more than three groups, and the utility model is not limited in particular.

At the same time, at least one moving contact 10 in one group of contact assemblies 1 is also connected in series with at least one moving contact 10 in the other group of contact assemblies 1 in a one-to-one correspondence manner. I.e. one moving contact in one contact assembly 1 on the left in fig. 1, 2 is correspondingly connected in series with one moving contact in one contact assembly 1 on the right, while the other moving contact in one contact assembly 1 on the left is correspondingly connected in series with the other moving contact in one contact assembly 1 on the right. Thus, four pairs of contact groups in the two groups of contact assemblies on the left side and the right side are correspondingly connected in series to form two switch branches respectively, namely one contact pair in the left side contact assembly and one contact pair in the right side contact assembly are connected in series to form one switch branch, and the other contact pair in the left side contact assembly and the other contact pair in the right side contact assembly are connected in series to form the other switch branch, so that two switch branches are formed in total. When the number of the switch branches is more than two, the two switch branches form a parallel connection relationship, and the parallel connection relationship is described in detail below.

The connection relationship between the two groups of contact assemblies 1 is further described as follows: referring to fig. 1 and fig. 7 to fig. 9, the moving contact in one group of the contact assemblies 1 is defined as a moving contact a100, and the moving contact in the other group of the contact assemblies 1 is defined as a moving contact B101; correspondingly, the fixed contacts which are arranged in one-to-one opposite to the movable contact A100 are defined as fixed contacts A110, and the fixed contacts which are arranged in one-to-one opposite to the movable contact B101 are defined as fixed contacts B111;

at least two moving contacts A100 are respectively connected with at least two moving contacts B101 in series in a one-to-one correspondence manner through conductive pieces 12; and one of the moving contacts a100 and one of the moving contacts B101, the fixed contact a110 arranged opposite to the moving contact a100, and the fixed contact B111 arranged opposite to the moving contact B101 connected in series together constitute one of the switch branches, and the at least two switch branches are connected in parallel; the circuit principle can be seen from fig. 10.

In one aspect, the utility model forms two groups of contact assemblies into at least two switch branches connected in parallel, so that the resistance of the contact assemblies can be greatly reduced, and the load bearing capacity of the relay is improved; on the other hand, by arranging two groups of contact assemblies, when a product has a problem or unexpected fault current occurs in a loop and the contacts of the relay are possibly adhered, the two groups of contact assemblies are controlled independently of each other, so that even if the movable contact and the fixed contact in one group of contact assemblies are adhered, the other group of contact assemblies can realize instant disconnection of the main loop, and the safety of an electric loop is ensured. Therefore, the contact assembly provided by the utility model greatly reduces the unreliable risk of adhesion.

In this embodiment, the single-drive multi-fracture relay further includes a magnetic circuit driving mechanism 3, where the magnetic circuit driving mechanism 3 can drive two groups of contact assemblies 1 to act synchronously, that is: the magnetic circuit driving mechanism 3 can drive to synchronize the working states of the two groups of contact assemblies 1. Can be further described as: the magnetic circuit driving mechanism 3 can drive the two moving contacts 10 in the two groups of contact assemblies 1 and connected in series to synchronously move towards or away from the two fixed contacts 11 (matched with the two moving contacts 10).

In addition, the magnetic circuit driving mechanism 3 can also drive at least two moving contacts 10 in each group of contact assemblies 1 to be respectively in suction connection with or disconnection from the fixed contacts 11 matched with the moving contacts.

The concrete description is as follows: the time sequence of the attraction and communication of at least two moving contacts 10 in each group of the contact assemblies 1 with the fixed contacts 11 matched with the moving contacts is inversely proportional to the distance between the moving contacts 10 and the executing end of the magnetic circuit driving mechanism 3, namely: the time of the suction communication between the movable contact 10 and the fixed contact 11, which are close to the execution end of the magnetic circuit driving mechanism 3, is later than the time of the suction communication between the movable contact 10 and the fixed contact 11, which are far away from the execution end of the magnetic circuit driving mechanism 3; in addition, the time sequence of opening at least two moving contacts 10 in each group of contact assemblies 1 respectively with the matched fixed contacts 11 is in direct proportion to the distance between the moving contacts 10 and the executing end of the magnetic circuit driving mechanism 3, namely: the time for opening the moving contact 10 and the fixed contact 11 close to the actuating end of the magnetic circuit driving mechanism 3 is earlier than the time for opening the moving contact 10 and the fixed contact 11 far from the actuating end of the magnetic circuit driving mechanism 3.

As can be seen from the above, the present utility model controls the actuation sequence of the at least two moving contacts 10 in each group of contact assemblies 1, which are respectively connected to or disconnected from the fixed contact 11 in a suction manner, so as to realize that the moving contact and the fixed contact far from the execution end of the magnetic circuit driving mechanism 3 are firstly closed and then opened; a relay working mode of closing and opening after a movable contact and a fixed contact close to the execution end of the magnetic circuit driving mechanism 3; because the moving contact and the static contact which are far away from the execution end of the magnetic circuit driving mechanism 3 are firstly closed and then opened; the relay can bear the arcing energy of the electric arc generated when the relay is closed or opened, so that the moving and static contacts which are closed later and opened earlier can well avoid the risks of being ablated and damaged by the electric arc, and can be effectively protected, thereby the performance of the relay product can be well optimized and improved, and the use risk of equipment can be reduced.

As a main innovation point of the present utility model, a set of magnetic circuit driving mechanisms is provided in the present utility model, which can simultaneously control the on-off actions of two sets of contact assemblies in at least one set of independent switch units, that is, in this embodiment, the on-off actions of two sets of contact assemblies in one set of switch units can be achieved through the set of magnetic circuit driving mechanisms, which is described in detail below:

In this embodiment, the switch unit further includes two movable reeds 11 and two lead-out pieces 14, where the two movable reeds 13 are arranged at intervals along a second direction, the second direction is perpendicular to the first direction, at least two movable contacts 10 arranged at intervals along the first direction are respectively installed on the two movable reeds 13, and the two movable reeds 13 are also connected with the magnetic circuit driving mechanism 3 respectively; the two lead-out pieces 14 are respectively arranged opposite to the two movable contact springs 13 one by one, namely, the two lead-out pieces 14 are also arranged at intervals along the second direction, and at least two fixed contacts 11 which are arranged at intervals along the first direction are respectively arranged on the two lead-out pieces 14.

Further preferably, the movable contact 10 is mounted on the movable contact spring 13 according to the following structure: at least two riveting holes A which are arranged at intervals along the first direction are respectively arranged on the two movable contact springs 13, and at least two movable contacts 10 are respectively riveted and fixed in the at least two riveting holes A.

The structure for realizing that the static contact 11 is mounted on the lead-out sheet 14 is as follows: at least two riveting holes B which are arranged at intervals along the first direction are respectively arranged on the two leading-out sheets 14, and at least two fixed contacts 11 are respectively riveted and fixed in the at least two riveting holes B.

Further preferably, in this embodiment, the magnetic circuit driving mechanism 3 drives the two sets of contact assemblies 1 to act simultaneously, and one set of magnetic circuit driving mechanism 3 can drive the two movable springs 13 to swing obliquely towards or away from the two pull-out pieces 14 synchronously, that is: the magnetic circuit driving mechanism 3 drives the two movable contact springs 13 to synchronously swing obliquely relative to the two leading-out sheets 14, so that the synchronous action of the two groups of contact assemblies 1 can be ensured, and at the same time, the action that at least two movable contacts 10 in each group of contact assemblies 1 are respectively connected with or disconnected from the matched fixed contacts 11 in a suction way is asynchronous.

As one embodiment of the present utility model, the magnetic circuit driving mechanism 3 includes a magnetic force source 30A and a driving relay assembly 30B, wherein the magnetic force source 30A is used for generating magnetic force, and the driving relay assembly 30B drives the moving contacts of the two contact assemblies in each group of the switch units to be in contact with the fixed contacts to realize connection and away from the fixed contacts to realize disconnection.

Further, the magnetic force source 30A may be a single-core electromagnet, which is composed of a magnet core 31 and a set of coils 30 wound around the magnet core. Or the magnetic force source is formed by connecting at least two single-core electromagnets in series, wherein the single-core electromagnets are composed of a magnetic iron core and a group of coils wound outside the magnetic iron core, and the two or more single-core electromagnets are connected in series to form the magnetic force source. Or the magnetic force source is a multi-core electromagnet, and the multi-core electromagnet is composed of a plurality of magnetic iron cores and a group of coils wound outside the magnetic iron cores at the same time.

Further, the driving relay assembly 30B is a relay mechanism for converting the magnetic force of the magnetic force source into the movement of the driving moving contact, and specifically includes a yoke 32, an armature 33, a return spring, and other components, which will be described in detail below.

Still further preferably, the structure for realizing the synchronous tilting of the two movable springs 13 toward or away from the two pull-out pieces 14 by the magnetic circuit driving mechanism 3 is: based on the state that the multi-fracture relay is vertically placed, the two movable reeds 13 are respectively and transversely arranged above the two lead-out sheets 14; the magnetic circuit driving mechanism 3 includes a coil 30, a magnet core 31, a yoke 32 and an armature 33, wherein the magnet core 31 is transversely inserted into the coil 30, the yoke 32 is transversely disposed beside the lower side of the coil 30 and is simultaneously connected with the tail end of the magnet core 31, the armature 33 is vertically disposed beside the head end of the magnet core 31, and meanwhile, the armature 33 is also rotatably connected with the rear end side of the yoke 32 and forms a rotation fulcrum at the joint, namely: the armature 33 is lever-type swingable around the rotation fulcrum;

the rear sides of the two movable springs 13 are respectively fixedly connected with the lower ends of the two armatures 33 (namely, the execution ends of the magnetic circuit driving mechanism 3), so that when the coil 30 applies a set voltage, the armatures 33 can deflect forward, the upper ends of the armatures 33 are in suction connection with the head ends of the magnet cores 31, and the lower ends of the armatures 33 drive the two movable springs 13 to swing obliquely downwards; when the coil 30 is powered off, the armature 33 can deflect reversely, so that the upper end of the armature 33 is disconnected with the head end of the magnet core 31, and the lower end of the armature 33 drives the two movable springs 13 to tilt upwards.

Still more preferably, the front end side of the yoke 32 is fixedly connected to the rear end of the magnet core 31 through a connection plate; a return spring is connected between the bottom wall of the yoke 32 and the lower part of the armature 33, and the return spring is used for providing elastic tension for forward deflection of the armature 33 so as to ensure that the movable contact and the fixed contact are communicated and attracted.

The armature 33 has a first vertically arranged section 330, a second horizontally arranged section 331, and a connecting section 332 connected between the first section 330 and the second section 331, wherein the first section 330 is in a shape of a regular flat plate (such as a square flat plate), the first section 330 is vertically disposed beside the head end of the magnet core 31, the connecting section 332 is rotationally connected with the rear end side of the yoke 32, and the second section 331 is disposed below the yoke 32 and fixedly connected with the rear side of the movable spring 13 through an injection molding piece.

In the above structure, the coil and the magnet core form the magnetic force source 30A, the yoke 32, the armature 33 and the corresponding return spring and connecting plate form the driving transfer assembly 30B, so that the magnetic force source 30A is electrified to generate a magnetic circuit, and a magnetic attraction force is generated on the driving transfer assembly 30B, and the magnetic attraction force attracts the movable contact spring 13 to drive the movable contact 10 to realize contact conduction with the fixed contact 11, when the magnetic force source is powered off, the magnetic force of the magnetic force source 30A disappears, and the driving transfer assembly drives the movable contact 10 to be far away from the fixed contact 11 through the movable contact spring 13 under the action of the return spring, so that the separation of the movable contact 10 and the fixed contact 11 is realized.

Further, when the switch units are N groups, N is greater than or equal to 1, the driving relay assembly 30B is one group, and at the same time drives at least two moving contacts 10 in each group of the contact assemblies 1 in each group of switch units to be respectively connected with the fixed contacts 11 matched with the moving contacts in a sucking way or disconnected with the fixed contacts in a far way.

Or when the switch units are N groups, N is greater than or equal to 1, the driving relay assemblies 30B are N groups, that is, a group of driving relay assemblies 30B are arranged corresponding to each group of independent switch units, and the driving relay assemblies are used for driving at least two moving contacts 10 in two groups of contact assemblies 1 in a group of corresponding switch units to be respectively connected with the fixed contacts 11 in a suction way or to be separated from the fixed contacts 11 in a remote way.

Or, when the switch units are N groups, N is greater than or equal to 1, the driving transfer assemblies 30B are 2N groups, that is, two groups of driving transfer assemblies 30B are arranged corresponding to each group of independent switch units, and each two groups of driving transfer assemblies are respectively used for driving at least two moving contacts 10 in two groups of contact assemblies 1 in a corresponding group of switch units to be respectively connected with the fixed contact 11 in a sucking way or be separated from the fixed contact 11 in a matching way. The following description is made with reference to specific embodiments:

Referring to fig. 11, a schematic block diagram of an arrangement of a set of magnetic circuit driving and transferring assemblies 30B according to embodiment 1 includes a switch unit and a set of magnetic circuit driving mechanisms, wherein one set of magnetic circuit driving mechanisms 3 includes a set of coils 30, a magnet core 31 correspondingly disposed in the set of coils, and two sets of driving and transferring assemblies 30B correspondingly disposed outside the set of coils, and the two sets of driving and transferring assemblies 30B are respectively used for driving on-off actions of two movable reeds 13 in each set of switch units. Namely, a single-core electromagnet formed by a group of coils 30 and a magnetic core 31 is adopted, and two groups of driving transfer components are correspondingly arranged to realize the respective driving of two movable reeds in one switch unit. In the magnetic circuit driving mechanism mode, the single-core electromagnet formed by the same coil and the same magnet core is adopted to drive the two movable reeds in one switch unit respectively through the two groups of driving transfer components, so that synchronous control of one switch unit is realized, the control synchronism is improved, and the part setting is reduced.

Referring to fig. 12, a schematic block diagram of embodiment 2 provided by the present utility model includes a switch unit and a set of magnetic circuit systems 3, in which only one set of coils 30, one magnet core 31 and one driving relay assembly 30B are disposed in one set of magnetic circuit systems 3, that is, in this embodiment, a single core electromagnet formed by one coil 30 and one magnet core 31 is used as a magnetic circuit source 30A, only one driving relay assembly 30B is used to drive two moving reeds in one switch device K at the same time, so as to realize on-off control actions on two sets of contact assemblies.

Referring to fig. 13, a schematic block diagram of embodiment 3 provided by the present utility model is that a set of coils 30, a magnet core 31 and a driving relay assembly 30B are disposed in a set of magnetic circuit system 3, and meanwhile, in this embodiment, a plurality of sets of switch devices, namely, a first switch device K1 and a second switch device K2 (two sets are taken as an example), that is, in this embodiment, a single core electromagnet formed by one coil 30 and one magnet core 31 is used as a magnetic circuit source 30A, and meanwhile, only one driving relay assembly 30B is disposed to simultaneously drive two movable reeds 13 in each set of switch devices (the first switch device K1 and the second switch device K2), so as to realize on-off control actions on two sets of contact assemblies in two sets of switch devices that are independent of each other.

Referring to fig. 14, in order to provide a schematic block diagram of embodiment 4 of the present utility model, a set of coils 30, two magnet cores 31, and two driving relay assemblies 30B are disposed in a set of magnetic circuit system 3, and meanwhile, a set of switch devices are disposed in this embodiment, that is, two magnet cores 31 are disposed in a coil 30 to form a multi-core electromagnet as a magnetic source 30A, and two driving relay assemblies 30B are used to respectively drive two movable reeds in a switch device K, so as to further implement on-off control actions for two sets of contact assemblies in a switch unit.

Referring to fig. 15, a schematic block diagram of embodiment 5 provided by the present utility model is that a set of coils 30, four magnetic cores 31, and four driving relay assemblies 30B are disposed in a set of magnetic circuit system 3, and meanwhile, in this embodiment, a plurality of sets of switching devices are disposed, that is, a first switching device K1 and a second switching device K2 (two sets are illustrated), that is, one coil 30 and four magnetic cores 31 form a multi-core electromagnet as a magnetic source 30A, and four driving relay assemblies 30B are disposed to respectively drive two movable reeds in each set of switching devices (the first switching device K1 and the second switching device K2), so as to implement on-off control actions on two sets of contact assemblies in two sets of switching devices that are independent of each other.

Of course, the magnetic force source 30A of the present utility model may also be formed by connecting a plurality of independent single-core electromagnets in series, referring to embodiment 6 of fig. 16, and then correspondingly arranging one or more sets of driving relay assemblies 30B to control on/off of one or more sets of switch units, which is similar to the above embodiment in principle, and will not be repeated.

The working principle of the present utility model when the multiple switching devices are provided is described in detail below with reference to embodiment 5, and referring to fig. 17 to 19, two sets of switching devices, namely, a first switching device K1 and a second switching device K2 are provided, and a set of magnetic circuit driving mechanisms 3 are provided, so that the on-off actions of the two sets of switching devices, namely, the first switching device K1 and the second switching device K2, are simultaneously controlled by the set of magnetic circuit driving mechanisms 3. Under the condition that two switching devices are required to be synchronously driven, the synchronous performance of the two switching devices can be realized by adopting the mode of the embodiment, and if three switching devices are required to be simultaneously used in a three-phase system, only one switching device is required to be additionally arranged, and a plurality of independent switching devices are controlled by the same group of magnetic circuit systems.

According to the utility model, at least more than two groups of independently arranged switching devices are controlled simultaneously through one group of magnetic circuit driving mechanisms, so that not only are parts reduced and costs reduced, but also the structure is simplified and occupied space is reduced, and at the same time, at least more than two groups of independently arranged switching devices are controlled to be on-off through one group of magnetic circuit driving mechanisms, so that the synchronism of on-off control is realized, and further the synchronous and accurate control requirement of a three-phase system or other use occasions is met.

In addition, in order to better realize that the actions of the at least two moving contacts 10 in each group of contact assemblies 1 respectively connected with or disconnected from the fixed contacts 11 matched with the moving contacts are asynchronous, the embodiment also performs the following optimization and improvement modes, such as: in a first optimization mode, the arrangement angle between the movable spring 13 and the armature 33 is optimally controlled, specifically: in this embodiment, the movable reed 13 is in a strip flat sheet shape extending along the first direction, and the intersecting angle between the center line of the length direction of the movable reed 13 and the vertical center line of the first section 330 is preferably controlled to be 60 ° to 90 °, and this angle range can ensure that the stroke of the armature 33 driving the movable reed 13 to deflect well meets the technical requirement of the attraction or disconnection of the movable contact and the static contact. The second optimization method is to optimally control the height of the static contact 11, specifically: the upper side surfaces of at least two fixed contacts 11 in each group of contact assemblies 1 are not in the same height plane, so that the technical requirements of the attraction or disconnection of the movable contact and the fixed contact are well met.

In addition, in order to further improve the reliability of the relay product, in this embodiment, the conductive member 12 is a flexible connection member, so when the moving contact and the fixed contact perform the actuation or disconnection action, if a clamping stagnation occurs between one group of moving contact and fixed contact, the existence of the flexible connection member will not affect the other group of moving contact and fixed contact, and the relay product still can realize part of functions, and will not cause complete failure, thereby improving the reliability of the product.

Further preferably, the flexible connection unit includes a wire 120 and two metal connectors 121 fixedly connected to two ends of the wire 120, wherein the wire 120 is a single-strand wire or a multi-strand wire; two metal connectors 121 are square copper tube heads, and two metal connectors 121 are respectively welded and fixedly connected with two ends of the wire 120, specifically: the metal connector 121 is fixedly pressed with one end of the wire 120 and then fixedly connected with the wire by welding, so that the connection strength between the metal connector 121 and the wire is ensured, and the loop resistance is reduced; simultaneously, the two metal connectors 121 are also riveted and fixedly connected with the moving contact A100 and the moving contact B101.

Furthermore, the flexible connection unit used as the conductive member 12 may be other embodiments than the above-mentioned "combination of the conductive wire 120 and the metal connector 121", such as: the flexible connecting piece is a flexible copper bar formed by stacking a plurality of copper foils, two ends of the flexible copper bar are respectively connected with the moving contact A100 and the moving contact B101, and the connection mode can be welding, riveting and the like. Further preferably, the thickness of each copper foil is 0.05-0.1 mm, so that the flexible copper bar has the advantages of thin size, space saving, good flexibility, large bending degree and the like, and the reliability of the product is better improved.

In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The foregoing description is only of a preferred embodiment of the utility model, which can be practiced in many other ways than as described herein, so that the utility model is not limited to the specific implementations disclosed above. While the foregoing disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model without departing from the technical solution of the present utility model still falls within the scope of the technical solution of the present utility model.

Claims (24)

1. A single-drive multi-fracture relay is characterized in that: comprises a group of magnetic circuit driving mechanisms (3) and at least one group of independent switch units (K);

each group of the switch units is provided with two groups of contact assemblies (1), and each group of contact assemblies (1) is provided with at least one moving contact (10) and at least one fixed contact (11) which is respectively arranged in a one-to-one opposite manner with the moving contact (10); simultaneously, at least one moving contact (10) in one group of contact assemblies (1) is also respectively connected in series in a one-to-one correspondence manner to at least one moving contact (10) in the other group of contact assemblies (1);

The magnetic circuit driving mechanism can simultaneously control the on-off actions of two groups of contact assemblies in each group of independent switch units.

2. The single-drive multi-break relay according to claim 1, wherein: the magnetic circuit driving mechanism (3) comprises a magnetic force source (30A) which can drive the moving contacts of the two groups of contact assemblies in each group of switch units to be in contact with the fixed contacts simultaneously so as to realize connection and disconnection.

3. The single-drive multi-break relay according to claim 2, wherein: the magnetic force source (30A) is a single-core electromagnet, and the single-core electromagnet is composed of a magnet core (31) and a group of coils (30) wound outside the magnet core.

4. The single-drive multi-break relay according to claim 2, wherein: the magnetic force source is formed by connecting at least two single-core electromagnets in series, and the single-core electromagnets are composed of a magnetic iron core and a group of coils wound outside the magnetic iron core.

5. The single-drive multi-break relay according to claim 2, wherein: the magnetic force source is a multi-core electromagnet, and the multi-core electromagnet is composed of a plurality of magnetic iron cores and a group of coils wound outside the magnetic iron cores.

6. A single-drive multi-break relay according to any one of claims 3 to 5, characterized in that: the magnetic circuit driving mechanism (3) further comprises at least one group of driving transfer components (30B), and the magnetic force source (30A) drives the on-off action of the moving contact (10) and the fixed contact (11) through the driving transfer components (30B).

7. The single-drive multi-break relay according to claim 6, wherein: when the switch units are N groups, N is larger than or equal to 1 natural number, the driving transfer assembly (30B) is one group, and at least two moving contacts (10) in each group of the contact assemblies (1) in each group of switch units (K) are respectively connected with the static contacts (11) matched with the moving contacts in a sucking way or are disconnected in a far away way.

8. The single-drive multi-break relay according to claim 6, wherein: when the switch units are N groups, N is larger than or equal to 1 natural number, the drive transfer assembly (30B) is N groups, namely, a group of drive transfer assemblies (30B) are arranged corresponding to each group of independent switch units (K), and the drive transfer assemblies (30B) are used for driving at least two moving contacts (10) in two groups of contact assemblies (1) in the corresponding group of switch units to be respectively connected with the fixed contacts (11) matched with the moving contacts in an attracting way or disconnected in a far way.

9. The single-drive multi-break relay according to claim 6, wherein: when the switch units are N groups, N is larger than or equal to 1 natural number, the driving transfer assemblies (30B) are 2N groups, namely, two groups of driving transfer assemblies (30B) are arranged corresponding to each group of independent switch units (K), and each two groups of driving transfer assemblies (30B) are respectively used for driving at least two moving contacts (10) in two groups of contact assemblies (1) in a group of corresponding switch units to be respectively connected with the fixed contacts (11) matched with the moving contacts in a sucking way or are separated from the fixed contacts in a far way.

10. The single-drive multi-break relay according to claim 6, wherein: based on the state that the single-drive multi-break relay is vertically placed, namely, based on the state that a group of magnetic circuit driving mechanisms are positioned above the switch unit (K):

the magnet core of the magnetic force source is transversely arranged along the horizontal direction,

the drive transfer assembly comprises a yoke (32), an armature (33) and a return spring, wherein the yoke (32) is transversely arranged beside the lower side of the coil (30) and is simultaneously connected with the tail end of the magnet core (31), and meanwhile, the armature (33) is also rotationally connected with the rear end side of the yoke (32) and forms a rotation fulcrum at the joint, namely: the armature (33) can swing in a lever manner around the rotation fulcrum; a return spring is connected between the bottom wall of the yoke (32) and the lower part of the armature (33);

When the coil (30) applies a set voltage, the armature (33) can deflect positively, so that the upper end of the armature (33) is in attraction connection with the head end of the magnet core (31), and the lower end of the armature (33) swings downwards in a tilting manner to enable the moving contact (10) to be in contact conduction with the fixed contact (11); when the coil (30) is powered off, the armature (33) can reversely deflect under the action of the return spring, so that the upper end of the armature (33) is disconnected with the head end of the magnet core (31), and the lower end of the armature (33) swings upwards in an inclined manner to be disconnected with the moving contact (10) and the fixed contact (11) in a far away mode.

11. The single-drive multi-break relay according to claim 10, wherein: in the driving transfer assembly, the front end side of the yoke (32) is fixedly connected with the tail end of the magnet core (31) through a connecting plate.

12. The single-drive multi-break relay according to claim 11, wherein: the armature (33) is provided with a first section (330) which is vertically arranged, a second section (331) which is horizontally arranged and a connecting section (332) which is connected between the first section (330) and the second section (331), wherein the first section (330) is vertically arranged beside the head end of the magnet core (31), the connecting section (332) is rotationally connected with the rear end side of the yoke (32), and the second section (331) is arranged below the yoke (32) and is fixedly connected with the rear side of the movable reed (13) through an injection molding piece.

13. The single-drive multi-break relay according to claim 12, wherein: when each group of contact assemblies is provided with more than two moving contacts (10) and fixed contacts (11) which are arranged in a one-to-one opposite manner, the more than two moving contacts (10) are arranged at intervals along a first direction; simultaneously, at least two moving contacts (10) in one group of contact assemblies (1) are respectively connected in series in a one-to-one correspondence manner to at least two moving contacts (10) in the other group of contact assemblies (1), so that the two groups of contact assemblies (1) form at least two switch branches; and at least two switch branches are connected in parallel.

14. The single-drive multi-break relay according to claim 13, wherein: defining the moving contact in one group of the contact assemblies (1) as a moving contact A (100), and defining the moving contact in the other group of the contact assemblies (1) as a moving contact B (101); correspondingly, the fixed contacts which are arranged in a one-to-one opposite manner with the moving contacts A (100) are defined as fixed contacts A (110), and the fixed contacts which are arranged in a one-to-one opposite manner with the moving contacts B (101) are defined as fixed contacts B (111);

at least two moving contacts A (100) are respectively connected with at least two moving contacts B (101) in series in a one-to-one correspondence manner through conductive pieces (12); and the moving contact A (100) and the moving contact B (101) which are connected in series, the fixed contact A (110) which is opposite to the moving contact A (100) and the fixed contact B (111) which is opposite to the moving contact B (101) form one switch branch.

15. The single-drive multi-break relay according to claim 14, wherein: at least two moving contacts (10) in each group of contact assemblies (1) are respectively asynchronous with the action of sucking connection or disconnection of the fixed contacts (11) matched with the moving contacts.

16. The single-drive multi-break relay according to claim 15, wherein: in each group of switch units, two movable contact springs (13) are respectively arranged, at least two movable contacts (10) which are arranged at intervals along the first direction are respectively arranged on the two movable contact springs (13), and the two movable contact springs (13) are respectively connected with the lower end of an armature (33) in a driving transfer assembly of the magnetic circuit driving mechanism (3);

in each group of switch units, two leading-out sheets (14) are respectively arranged, the two leading-out sheets (14) are respectively arranged opposite to the two movable contact springs (13), and at least two fixed contacts (11) which are arranged at intervals along the first direction are respectively arranged on the two leading-out sheets (14).

17. The single-drive multi-break relay according to claim 16, wherein: in each group of switch units, two movable reeds (13) are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction;

Correspondingly, in each group of switch units, two lead-out sheets (14) are also arranged at intervals along the second direction.

18. The single-drive multi-break relay according to claim 16, wherein: in each group of switch units, at least two riveting holes A which are distributed at intervals along the first direction are respectively arranged on the two movable contact springs (13), and at least two movable contacts (10) are respectively riveted and fixed in at least two riveting holes A;

in each group of switch units, at least two riveting holes B which are distributed at intervals along the first direction are respectively arranged on the two leading-out sheets (14), and at least two static contacts (11) are respectively riveted and fixed in at least two riveting holes B.

19. The single-drive multi-break relay according to claim 17, wherein: the time sequence of the attraction communication of at least two moving contacts (10) in each group of contact assemblies (1) and the fixed contacts (11) matched with the moving contacts is inversely proportional to the distance between the moving contacts (10) and the execution end of the magnetic circuit driving mechanism (3), namely: the time of the suction communication of the moving contact (10) close to the execution end of the magnetic circuit driving mechanism (3) and the fixed contact (11) is later than the time of the suction communication of the moving contact (10) far away from the execution end of the magnetic circuit driving mechanism (3) and the fixed contact (11);

In addition, the time sequence of disconnection of at least two moving contacts (10) in each group of contact assemblies (1) and the fixed contacts (11) matched with the moving contacts is in direct proportion to the distance between the moving contacts (10) and the execution end of the magnetic circuit driving mechanism (3), namely: the time for disconnecting a moving contact (10) close to the execution end of the magnetic circuit driving mechanism (3) from the fixed contact (11) is earlier than the time for disconnecting a moving contact (10) far from the execution end of the magnetic circuit driving mechanism (3) from the fixed contact (11);

wherein the lower end of the armature (33) is used as the actuating end of the magnetic circuit driving mechanism (3).

20. The single-drive multi-break relay according to claim 19, wherein: the magnetic circuit driving mechanism (3) can drive the two movable reeds (13) in each group of independent switch units to synchronously swing obliquely towards or back to the two leading-out sheets (14) so that at least two movable contacts (10) in each group of contact assemblies (1) in each group of switch units are respectively asynchronous with the action of closing and connecting or disconnecting the fixed contacts (11) matched with the movable contacts.

21. The single-drive multi-break relay according to claim 7, wherein: the upper sides of at least two fixed contacts (11) in each group of contact assemblies (1) are not in the same height plane.

22. The single-drive multi-break relay according to claim 14, wherein: the conductive piece (12) adopts a flexible connecting piece, the flexible connecting piece comprises a wire (120) and two metal connectors (121) which are respectively and fixedly connected to two ends of the wire (120), and the two metal connectors (121) are respectively used for being connected with the moving contact A (100) and the moving contact B (101).

23. The single-drive multi-break relay according to claim 22, wherein: the wire (120) adopts a single-strand wire or a multi-strand wire;

the metal connector (121) adopts square copper tube head, metal connector (121) with wire (120) one end welding links firmly, simultaneously metal connector (121) still with moving contact A (100) or moving contact B (101) riveting links firmly.

24. The single-drive multi-break relay according to claim 14, wherein: the conductive piece (12) adopts a flexible connecting piece, the flexible connecting piece is a flexible copper bar formed by stacking a plurality of copper foils, and two ends of the flexible copper bar are respectively connected with the moving contact A (100) and the moving contact B (101).

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