On-off structure of large-opening-distance relay and magnetic latching relay

Abstract

The utility model relates to an on-off structure of a large-open-distance relay and a magnetic latching relay, the on-off structure comprises a push sheet, a conductive sheet assembly and a static sheet assembly, the conductive sheet assembly comprises a conductive sheet and a movable contact arranged on the conductive sheet; the static sheet assembly comprises a static sheet and a static contact arranged on the static sheet, the static sheet assembly further comprises a movable bridging piece, the push sheet is elastically connected with the bridging piece through a plurality of elastic pieces, and the bridging piece is synchronously contacted with or separated from the movable contact and the static contact; the magnetic latching relay has the beneficial effects that the contact and the separation of the movable contact and the static contact are realized through the bridging piece to realize the connection and the disconnection of a circuit, so that the arc resistance and the breaking capacity of the magnetic latching relay are enhanced, and the magnetic latching relay can bear high-power load and ultrahigh short-time current impact; the impact current resistance of the relay is improved, the electrical performance is stronger, and the size of the relay product is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay technology field especially relates to a big open distance relay's on-off structure and magnetic latching relay. BACKGROUND

[0002] Relay is a kind of electronic controller, mainly applied to automatic control circuit, actually with smaller current to control larger current a kind of automatic switch, to circuit plays automatic connection and cut-off function. The relay applied to control circuit needs to bear high-power load and super-high short-time current impact, and the relay load on-off mechanism is usually realized to the connection and cut-off function of circuit by the contact and separation of moving contact and static contact.

[0003] The existing magnetic latching relay applied to electric energy meter is generally composed of electromagnet assembly, moving armature assembly, conducting sheet assembly, static sheet assembly, push sheet, relay base and relay upper cover, after the magnetic pole of electromagnet assembly's magnetic coil is excited, the moving armature assembly is moved, and the conducting sheet assembly is driven to move by the to-and-fro movement of push sheet, realizes the opening / closing of moving / static contact;

[0004] The conducting sheet assembly of original structure adopts shunt sheet assembly structure, occupies a large amount of space, the distance between the moving contact and static contact of magnetic latching relay is smaller, so that the arc resistance and breaking capacity of magnetic latching relay are weaker, and it cannot meet the requirements of existing state grid;

[0005] When frequently switching between connection and cut-off, the existing magnetic latching relay is difficult to bear high-power load and super-high short-time current impact, and the length of the existing relay load on-off mechanism is relatively longer, so that the size of relay is larger, and it cannot adapt to the miniaturization requirement of control circuit to product. UTILITY MODEL CONTENTS

[0006] The utility model aims at overcoming the defects in prior art, and provides a kind of on-off structure and magnetic latching relay of big open distance relay.

[0007] To realize the above-mentioned purpose, the technical scheme of the utility model is to design a kind of on-off structure of big open distance relay, including push sheet, conducting sheet assembly, static sheet assembly, the conducting sheet assembly includes conducting sheet and the moving contact of setting on conducting sheet;The static sheet assembly includes static sheet and the static contact of setting on static sheet, further include movable bridging piece, the push sheet is elastically connected with the bridging piece by a plurality of elastic members, and the bridging piece is synchronous with the moving contact and static contact Contact or separate.

[0008] Further preferred technical solutions also include that the bridge piece is provided with first contacts corresponding to the moving contacts, and the bridge piece is also provided with second contacts corresponding to the static contacts.

[0009] Further preferred technical solutions also include that the bridge piece is elastically connected to the push piece by a plurality of first springs, and the plurality of first springs are arranged in a rectangular array between the push piece and the bridge piece, one end of each first spring abuts against the push piece, and the other end of each first spring abuts against the bridge piece.

[0010] Further preferred technical solutions also include that the push piece is provided with a plurality of guide rods, the bridge piece is provided with corresponding guide holes corresponding to each guide rod, and the bridge piece is sleeved on the guide rods of the push piece through the guide holes.

[0011] Further preferred technical solutions also include that one end of each guide rod is fixed to the push piece, the other end of the guide rod has a circular boss abutting against an end surface of the bridge piece, and the bridge piece is correspondingly provided with a counterbore.

[0012] Further preferred technical solutions also include that the push piece is a T-shaped push piece, one end of the push piece is a flat end portion matched with the bridge piece, the flat end portion is provided with intersecting reinforcing ribs, the other end of the push piece is provided with a cylindrical spring seat, and the cylindrical spring seat is provided with a second spring.

[0013] Further preferred technical solutions also include that a long strip-shaped guide hole penetrating through the push piece body is arranged on the middle part of the push piece close to the flat end portion, reinforcing ribs are arranged on the push piece on both sides of the guide hole, and one end of the push piece away from the bridge piece is provided with a push hole penetrating through the push piece.

[0014] A magnetic latching relay includes a relay base and a buckling-connected relay upper cover, the relay base is provided with an electromagnet assembly and a moving armature assembly, the relay base on one side of the moving armature assembly is provided with a toggle piece, the toggle piece is pivoted in the relay base, one end of the toggle piece is connected to the moving armature assembly, and the relay base is also provided with a large-opening relay on-off structure, the on-off structure is connected to the other end of the toggle piece.

[0015] Further preferred technical solutions also include that the electromagnet assembly, the moving armature assembly, and the push piece are arranged in parallel in the relay base, the toggle piece is arranged on the side of the push piece away from the moving armature assembly, the moving armature assembly is formed by a slot of a protruding part, the protruding part passes through the push piece close to the toggle piece from one side of the push piece, the toggle piece is provided with a first driving arm connected to the slot of the moving armature assembly, and the toggle piece is also provided with a second driving arm inserted into the push hole of the push piece and connected by a hinge rod.

[0016] Further preferred technical solutions also include that the first force arm length of the first driving arm of the toggle piece to the pivot center is less than the second force arm length of the second driving arm of the toggle piece to the pivot center.

[0017] Further preferred technical solutions also include that the toggle piece is provided with a stopper, a micro switch on the relay base, and the moving armature assembly can drive the moving spring piece of the micro switch to rotate during the process of rotating the opening and closing of the switch, thereby forming the contact and disconnection with the static spring piece of the micro switch.

[0018] The utility model discloses the advantages and beneficial effects are: 1, the push piece is connected through a plurality of elastic members and bridging piece, realizes the contact and separation of moving contact and static contact to realize the on and off of circuit, makes the anti-arc ability and breaking capacity of magnetic latching relay enhance, can bear the load of high power and superhigh short time current impact.

[0019] 2, because the push piece is connected through a plurality of elastic members and bridging piece, makes the structure of push piece assembly more simple, can make the relay have enough space, makes the contact opening distance increase, easily breaks arc.

[0020] 3, improve the ability of relay anti-impact current, and the electrical performance is stronger, and reduce the volume of relay product. DRAWINGS

[0021] Figure 1 A kind of magnetic latching relay three-dimensional structure schematic diagram is proposed for the utility model;

[0022] Figure 2 A kind of magnetic latching relay three-dimensional structure schematic diagram is proposed for the utility model;

[0023] Figure 3 A kind of large opening distance relay's on-off structure three-dimensional structure schematic diagram is proposed for the utility model;

[0024] Figure 4 A kind of large opening distance relay's on-off structure three-dimensional structure schematic diagram is proposed for the utility model;

[0025] In the figure: 10, the base of the electrical appliance; 20, the electromagnet assembly; 30, the clamping plate; 40, the arc extinguishing chamber; 50, the conducting sheet assembly; 51, the conducting sheet; 52, the moving contact; 60, the static sheet assembly; 61, the static sheet; 62, the static contact; 63, the second magnetic conducting sheet; 70, the push sheet; 71, the flat end; 72, the guide hole; 73, the reinforcing rib; 74, the push hole; 75, the cylindrical spring seat; 76, the second spring; 80, the pusher; 81, the first driving arm; 82, the second driving arm; 90, the moving armature assembly; 91, the protrusion; 100, the bridging piece; 101, the guide hole; 102, the first contact; 103, the first magnetic conducting sheet; 104, the second contact; 110, the guide rod; 111, the circular boss; 120, the first spring. DETAILED DESCRIPTION

[0026] The specific embodiments of the utility model will be further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot be used to limit the protection scope of the utility model.

[0027] Reference Figures 1-4 A kind of on-off structure of large opening distance relay, including push sheet 70, conducting sheet assembly 50, static sheet assembly 60, the conducting sheet assembly 50 includes conducting sheet 51 and the moving contact 52 being arranged on conducting sheet 51;The static sheet assembly 60 includes static sheet 61 and the static contact 62 being arranged on static sheet 61, also includes movable bridging piece 100, the push sheet 70 with the bridging piece 100 elastic abut, the bridging piece 100 is equipped with the first contact 102 with the moving contact 52 one-to-one corresponding cooperation, the bridging piece 100 is also equipped with the second contact 104 with the static contact 62 one-to-one corresponding cooperation, the push sheet 70 under the action of external force reciprocates along straight line, drive the bridging piece 100 moves towards the direction of approaching or away from the moving contact 52 and static contact 62 to make the first contact 102 and moving contact 52 and the second contact 104 and static contact 62 contact or separate, through the contact and separation of moving contact 52 and static contact 62 to realize the connection and cut-off effect to circuit.

[0028] In one embodiment, the end surface of the moving contact 52 and the static contact 62 is located in the same plane and on the same side of the bridging piece 100, the bridging piece 100 is a plate, the first contact 102 is provided on one end of the plate close to the moving contact 52, the second contact 104 is provided on one end of the plate close to the static contact 62, further, a pair of moving contacts 52 are riveted on the conducting sheet 51, a pair of static contacts 62 are riveted on the static sheet 61, and the bridging pieces 100 are correspondingly arranged in pairs, and the bridging pieces 100 arranged in pairs can bear large power load and ultra-high short-time impact current.

[0029] In order to further improve the bridge 100 can withstand high power load and ultra-high short-time impact current, the bridge 100 is elastically connected with the push piece 70 through a set of first springs 120, and the set of first springs 120 is arranged in a rectangular array between the push piece 70 and the bridge 100. One end of each first spring 120 abuts against the push piece 70, and the other end of each first spring 120 abuts against the bridge 100. In an embodiment, four first springs 120 are arranged between the push piece 70 and the bridge 70. One of the pair of bridges 100 is connected with two first springs 120. The push piece 70 and the bridge 100 are correspondingly provided with spring seats. The bridge 100 is driven by the first spring 120 to move towards the dynamic contact 52 and the static contact 62 to make the first contact 102 and the dynamic contact 52 and the second contact 104 and the static contact 62 contact, thereby realizing the on-off effect on the circuit.

[0030] In order to realize that the push piece 70 drives the bridge 100 to move away from the dynamic contact 52 and the static contact 62 to make the first contact 102 and the dynamic contact 52 and the second contact 104 and the static contact 62 separate, the circuit is cut off by the separation of the dynamic contact 52 and the static contact 62. A set of guide rods 110 are arranged on the push piece 70. The bridge 100 is correspondingly provided with a guide hole 101 for each guide rod 110. The bridge 100 is slidably sleeved on the guide rod 110 of the push piece 70. In order to stably drive the first contact 102 and the second contact 104 of the bridge 100 to disconnect from the dynamic contact 52 and the static contact 62, one end of each guide rod 110 is fixed on the push piece 70, and the other end of the guide rod 110 has a circular boss 111 which can abut against the end face of the bridge 100. The bridge 100 is correspondingly provided with a counterbore. Under the action of the push piece 70, the circular boss 111 abuts against the bridge 100, so that the push piece 70 is rigidly connected with the bridge 100, and the first contact 102 and the second contact 104 of the bridge 100 are driven to disconnect from the dynamic contact 52 and the static contact 62. This helps to overcome the attraction generated by the arc, ensures the disconnection of the first contact 102 and the second contact 104 from the dynamic contact 52 and the static contact 62, and realizes the cut-off effect on the circuit.

[0031] In an embodiment, four guide rods 110 are arranged on the push piece 70, and the four guide rods 110 are arranged in a circular array on the push piece 70. Preferably, each guide rod 110 is arranged on the side close to the edge of the corresponding spring 120.

[0032] In this way, when the push piece 70 moves towards the conductive sheet 51 and the electrostatic sheet 61, the push piece 70 presses the spring 120 to drive the bridge 100 to move towards the movable contact 52 and the static contact 62, so that the first contact 102 and the movable contact 52 and the second contact 104 and the static contact 62 are in contact, realizing the connection of the circuit; when the push piece 70 moves away from the conductive sheet 51 and the electrostatic sheet 61, the push piece 70 presses the bridge 100 through the circular boss 111 on the guide rod 110, drives the bridge 100 to move away from the movable contact 52 and the static contact 62, so that the first contact 102 and the movable contact 52 and the second contact 104 and the static contact 62 are separated, realizing the disconnection of the circuit.

[0033] In order to prevent the first contact 102 and the second contact 104 from being affected by the Lorentz magnetic force during power-on, a first magnetic conducting sheet 103 is arranged on the bridge 100 between the first contact 102 and the second contact 104.

[0034] Similarly, a second magnetic conducting sheet 63 is arranged on the electrostatic sheet 61 between the movable contact 52 and the static contact 62, to prevent the repulsive force caused by the Lorentz magnetic force during power-on.

[0035] In an embodiment, the push piece 70 is a T-shaped push piece, one end of the push piece 70 is a flat end 71 matched with the bridge 100, the flat end 71 is provided with intersecting reinforcing ribs 73, the other end of the push piece 70 is provided with a cylindrical spring seat 75, the cylindrical spring seat 75 is provided with a second spring 76, one end of the second spring 76 away from the cylindrical spring seat 75 is in elastic abutment with the relay base 10, when the first contact 102 and the movable contact 52 and the second contact 104 and the static contact 62 are separated, the second spring 76 stores energy; when the first contact 102 and the movable contact 52 and the second contact 104 and the static contact 62 are in contact, the second spring 76 releases energy, which can overcome the repulsive force caused by the Lorentz magnetic force during power-on, so that the contact pressure between the first contact 102 and the movable contact 52 and the second contact 104 and the static contact 62 becomes larger, the contact is more stable, and the ability of the load mechanism to resist impact current is enhanced.

[0036] A long strip-shaped guide hole 72 penetrating the push piece 70 is arranged on the middle part of the push piece 70 close to the flat end 71, the guide hole 72 is arranged along the moving direction of the push piece 70, and the reinforcing ribs 73 are arranged on the push piece 70 on both sides of the guide hole 72.

[0037] The push piece 70 is provided with a push hole 74 penetrating the push piece 70, and a toggle lever 80 of a relay is connected with the push hole 74. In an embodiment, the guide hole 72 and the push hole 74 are crosswise staggered on the push piece 70.

[0038] A magnetic latching relay includes a relay base 10 and a snap-fit connected relay upper cover, the relay base 10 is provided with an electromagnet assembly 20, a movable armature assembly 90, a static plate assembly 60, and a conducting plate assembly 50; the static contact 62 in the static plate assembly 60 and the movable contact 52 in the conducting plate assembly 50 are parallelly arranged on one side of the relay base 10; the relay base 10 on one side of the movable armature assembly 90 is provided with a toggle lever 80, the toggle lever 80 is pivotally connected in the relay base 10, the toggle lever 80 is provided with a first driving arm 81 which is engaged with a slot of the movable armature assembly 90, and the toggle lever 80 is provided with a second driving arm 82 which is inserted into a push hole 74 of a push piece 70 and is rotationally connected through a hinge rod.

[0039] In an embodiment, the electromagnet assembly 20, the movable armature assembly 90, and the push piece 70 are parallelly arranged in the relay base 10, the toggle lever 80 is arranged on a side away from the movable armature assembly 90, the slot of the movable armature assembly 90 is formed by slotting a protrusion 91, the protrusion 91 is penetrated by one side of the push piece 70 to be close to the toggle lever 80, the first driving arm 81 of the toggle lever 80 is inserted into the slot, and the second driving arm 82 of the toggle lever 80 is overlaid on the first driving arm 82 and is inserted into the push hole 74.

[0040] The first force arm length of the first driving arm 81 of the toggle lever 80 to the pivot center is less than the second force arm length of the second driving arm 82 of the toggle lever 80 to the pivot center, and the first force arm length of the toggle lever 80 is less than the second force arm length, so that the translation component of the first force arm in the direction of the opening / closing movement of the movable / static contacts is increased, and the distance between the movable contact 52 and the static contact 62 is increased.

[0041] The push piece 70 reciprocally moves along a straight line under the action of an external force, drives the bridging piece 100 to move towards or away from the movable contact 52 and the static contact 62 to make the first contact 102 and the movable contact 52 and the second contact 104 and the static contact 62 contact or separate, and the circuit is turned on and cut off by the contact and separation of the movable contact 52 and the static contact 62.

[0042] The relay base 10 on the guide hole 72 of the push piece 70 is also provided with a guide rod, the guide rod is inserted into the guide hole 72 and is slidingly matched with the guide hole 72.

[0043] The relay base 10 is provided with a clamping plate 30 on the side close to the relay upper cover, and the guide rod, the actuating member 80 and the moving armature assembly 90 are installed on the clamping plate 30.

[0044] The relay base 10 is provided with an anti-magnetic cover to prevent the Lorentz magnetic force generated by the electromagnet assembly when energized.

[0045] The electrostatic sheet assembly 60 and the conductive sheet assembly 50 are respectively provided with arc extinguishing chambers 40 on the side close to the relay base 10.

[0046] After the magnetic pole of the electromagnet assembly 20 changes when the magnetic coil is excited, the moving armature assembly 90 is attracted / repelled, so that the moving armature assembly 90 is actuated, the driving actuating member 80 of the moving armature assembly 90 rotates around the pivot center, the actuating member 80 drives the push piece 70 to move linearly, and the bridge piece 100 moves towards or away from the moving contact 52 and the static contact 62 to make the first contact 102 and the moving contact 52 and the second contact 104 and the static contact 62 contact or separate, so that the circuit is turned on and cut off through the contact and separation of the moving contact 52 and the static contact 62.

[0047] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A switching structure for a large-pitch relay, comprising a push plate, a conductive plate assembly, and a stationary plate assembly, wherein the conductive plate assembly includes a conductive plate and a moving contact disposed on the conductive plate; the stationary plate assembly includes an electrostatic plate and a stationary contact disposed on the electrostatic plate, characterized in that, The movable bridge is elastically connected with the push piece by elastic members, the bridge is synchronously contacted or separated with the movable contact and the static contact, the push piece is a T-shaped push piece, one end of the push piece is a flat end matched with the bridge, the flat end is provided with intersected reinforcing ribs, the other end of the push piece is provided with a cylindrical spring seat, and the cylindrical spring seat is provided with a second spring.

2. The on-off structure of a large opening distance relay according to claim 1, characterized in that, The bridge is provided with first contacts matched with the movable contacts one by one, and is also provided with second contacts matched with the static contacts one by one.

3. The on-off structure of a large opening distance relay according to claim 1, characterized in that, The bridge is elastically connected with the push piece by first springs, the first springs are arranged in a rectangular array between the push piece and the bridge, one end of each first spring is abutted with the push piece, and the other end of each first spring is abutted with the bridge.

4. The on-off structure of a large opening distance relay according to claim 3, characterized in that, The push piece is provided with guide rods, the bridge is provided with matched guide holes corresponding to the guide rods, and the bridge is slidably sleeved on the guide rods of the push piece through the guide holes.

5. The on-off structure of a large opening distance relay according to claim 4, characterized in that, One end of each guide rod is fixed on the push piece, the other end of the guide rod has a circular boss abutted with an end surface of the bridge, and the bridge is correspondingly provided with a counterbore.

6. The on-off structure of a large opening distance relay according to claim 1, wherein A long strip-shaped guide hole penetrating the push piece body is arranged on the middle part of the push piece close to the flat end, reinforcing ribs are arranged on the push piece on both sides of the guide hole, and one end of the push piece away from the bridge is provided with a push hole penetrating the push piece.

7. A magnetic latching relay comprising a relay base and a snap-fit connected relay upper cover, an electromagnet assembly and a movable armature assembly are arranged in the relay base, a toggle member is arranged in the relay base on one side of the movable armature assembly, the toggle member is pivotally connected in the relay base, and one end of the toggle member is connected with the movable armature assembly, characterized in that, The relay base is also provided with the on-off structure of the large-opening-distance relay as claimed in claims 1-6, and the on-off structure is connected with the other end of the driving piece.

8. A magnetic latching relay according to claim 7, wherein, The electromagnet assembly, the movable armature assembly and the push piece are arranged in parallel in the relay base, the driving piece is arranged on the side of the push piece away from the movable armature assembly, the movable armature assembly is formed by a slot in a protruding part, the protruding part passes through the push piece on the side of the push piece close to the driving piece, the driving piece is provided with a first driving arm connected with the slot of the movable armature assembly, and the driving piece is also provided with a second driving arm inserted into the push hole of the push piece and connected by a hinge rod.

9. A magnetic latching relay according to claim 8, wherein, The first force arm length from the first driving arm of the driving piece to the pivot center is smaller than the second force arm length from the second driving arm of the driving piece to the pivot center.

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