High current, high gap, three-phase relay

Abstract

The utility model discloses a big current big gap three -phase relay, including shell, partition, coil yoke iron subassembly, magnetic steel subassembly, push piece, push rod, on -off subassembly, the shell inside is equipped with the partition, and the partition divides the shell into first installation cavity and second installation cavity, coil yoke iron subassembly is fixedly installed in the first installation cavity, and magnetic steel subassembly is rotatably connected in the inside of first installation cavity through the pivot, and magnetic steel subassembly is matched with coil yoke iron subassembly, the magnetic steel subassembly is fixed with the stirring body, and the push piece is equipped with the stirring hole, and the stirring body end inserts the stirring hole and is movably connected with the push piece, and the push piece is fixed with three push rods, three on -off subassembly are fixed on the shell, and each on -off subassembly corresponds a push rod, the utility model discloses through first spring piece connection first fixed electrically conductive body and movable electrically conductive piece, make first fixed electrically conductive body and movable electrically conductive piece can be done thicker under not influencing the action, make the relay can bear the current increase.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and in particular to the field of relay technology. Background Technology

[0002] The open and closed states of the contacts of a magnetic latching relay are maintained by the magnetic force generated by a permanent magnet. When the relay contacts need to switch between open and closed states, only a positive or negative DC pulse voltage is needed to excite the coil. The magnetic poles generated by the excitation coil interact with the permanent magnet, and the relay completes the state transition instantaneously. When the contacts are in the holding state, the coil does not need to be energized. The magnetic force of the permanent magnet alone is enough to maintain the state of the relay. Therefore, it has the advantages of power saving, stable performance, small size, and high load capacity, and is widely used in remote control and communication devices.

[0003] Existing patent CN221304541U discloses a magnetic latching relay suitable for a three-phase rail meter with top inlet and bottom outlet. The inlet and outlet positions of the relay are distributed vertically, resulting in a large size of the relay, which occupies a lot of space and is not conducive to the miniaturization of the relay.

[0004] Existing patent CN2233337171U discloses a space-saving three-phase magnetic latching relay. Although its structure is relatively compact, the gap between the stationary contact and the moving contact is small when disconnected, which makes it easy for the stationary contact and the moving contact to make accidental contact, posing a certain safety hazard. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the prior art by proposing a high-current, large-gap three-phase relay, which enables the relay to have a compact structure and a large gap between the stationary and moving contacts when disconnected, making it safer and more reliable to use.

[0006] To achieve the above objectives, this utility model proposes a high-current, large-gap three-phase relay, including a housing, a partition plate, a coil yoke assembly, a magnet assembly, a push plate, a push rod, and a switching assembly. The housing has an internal partition plate that divides the interior into a first mounting cavity and a second mounting cavity. The coil yoke assembly is fixedly installed in the first mounting cavity. The magnet assembly is rotatably connected to the interior of the first mounting cavity via a rotating shaft, and the magnet assembly cooperates with the coil yoke assembly. An actuating body is fixed on the magnet assembly. The push plate has an actuating hole, and the end of the actuating body is inserted into the actuating hole and movably connected to the push plate. Three push rods are fixed on the push plate. Three switching assemblies are fixed on the housing, each corresponding to one push rod. Each switching assembly consists of a first fixed conductor, a second fixed conductor, a stationary contact, a first spring, a movable conductive plate, a moving spring, and a moving contact. The stationary contact, the first spring... The sheet, movable conductive sheet, movable spring sheet, and movable contact are all located inside the second mounting cavity. The first fixed conductor and the second fixed conductor both extend into the second mounting cavity from inside the outer shell. The ends of the first fixed conductor and the second fixed conductor are fixed inside the second mounting cavity. A stationary contact is fixed on the second fixed conductor. The first fixed conductor and the movable conductive sheet are connected by several first spring sheets. A movable contact that cooperates with the stationary contact is fixed on the movable conductive sheet. A movable spring sheet is fixed on the movable conductive sheet. The movable spring sheet is composed of a first sheet, a connecting sheet, a second sheet, and a through-rod sheet. The first sheet, the connecting sheet, and the second sheet are connected in sequence to form a U-shape. The first sheet is fixed on the movable conductive sheet. Through-rod sheets are provided on both sides of the first sheet. Through-rod sheets are provided with through-rod holes. The push rod passes through the through-rod holes. The second sheet passes through the area between the two through-rod sheets and abuts against the push rod.

[0007] Preferably, a guide groove is provided in the first mounting cavity, and the pusher is inserted into the guide groove. The guide groove is adapted to the pusher, and the pusher moves along the guide groove.

[0008] Preferably, the partition plate is provided with three clearance holes corresponding to the push rods, and the push rods pass through the clearance holes.

[0009] Preferably, the push rod is a metal rod, the push plate is a plastic plate, and a portion of the push rod is injection molded inside the push plate.

[0010] Preferably, the second mounting cavity is divided into three isolated sub-cavities, each sub-cavity corresponding to a switching component, which extends into the corresponding sub-cavity.

[0011] Preferably, a current transformer is installed on the portion of the first fixed conductor located outside the housing.

[0012] Preferably, the on / off assembly is equipped with an arc-blocking grid located inside the second mounting cavity and close to the stationary contact.

[0013] Preferably, the portion of the first fixed conductor located outside the housing and the portion of the second fixed conductor located outside the housing are both located on the same side of the housing.

[0014] Preferably, the first sheet and the movable conductive sheet are riveted together by a moving contact.

[0015] Preferably, the first spring is a single spring or is composed of several single springs stacked together, with the middle of the single spring bent into a U-shape, and the first spring is riveted to the first fixed conductor and the first spring is riveted to the movable conductor.

[0016] The beneficial effects of this utility model are as follows: This utility model connects the first fixed conductor and the movable conductor with the first spring, so that the first fixed conductor and the movable conductor can be made thicker without affecting the operation, thereby increasing the current that the relay can withstand; the push plate, push rod and moving spring cooperate to make the gap between the stationary contact and the moving contact larger when they separate, thus ensuring the safety of the relay.

[0017] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0018] Figure 1 This is the front view of the high-current, large-gap three-phase relay of this utility model; Figure 2 This is a structural diagram of the internal structure of the first mounting cavity of the high-current, large-gap three-phase relay of this utility model; Figure 3 This is a structural diagram of the internal structure of the second mounting cavity of the high-current, large-gap three-phase relay of this utility model; Figure 4 This is a schematic diagram of the push plate and push rod of the high-current, large-gap three-phase relay of this utility model; Figure 5 This is a schematic diagram of the moving spring of the high-current, large-gap three-phase relay of this utility model.

[0019] In the diagram: 1-Outer shell, 2-Coil yoke assembly, 3-Push piece, 4-First fixed conductor, 5-First spring, 6-Modible conductor, 7-Second fixed conductor, 8-Modible spring, 10-Allowing hole, 11-First mounting cavity, 12-Second mounting cavity, 13-Guide groove, 15-Arc barrier, 20-Magnet assembly, 21-Actuating body, 30-Actuating hole, 31-Push rod, 40-Inductor, 60-Modifying contact, 70-Static contact, 81-First piece, 82-Connecting piece, 83-Second piece, 84-Through piece, 85-Through hole. Detailed Implementation

[0020] Example 1: See Figure 1 , Figure 2 and Figure 3 The present invention relates to a high-current, large-gap three-phase relay, comprising a housing 1, a partition plate, a coil yoke assembly 2, a magnet assembly 20, a push plate 3, a push rod 31, and a switching assembly. The housing 1 is provided with a partition plate inside, which divides the interior of the housing 1 into a first mounting cavity 11 and a second mounting cavity 12.

[0021] See Figure 2 and Figure 4 The first mounting cavity 11 is fixedly installed with a coil yoke assembly 2. The magnet assembly 20 is rotatably connected to the inside of the first mounting cavity 11 via a rotating shaft. The magnet assembly 20 cooperates with the coil yoke assembly 2. The magnet assembly 20 is fixed with a toggle body 21. The push plate 3 is provided with a toggle hole 30. The end of the toggle body 21 is inserted into the toggle hole 30 and movably connected with the push plate 3. The push plate 3 is fixed with three push rods 31.

[0022] Three on / off components are fixed on the outer casing 1. Each on / off component corresponds to a push rod 31. The on / off component consists of a first fixed conductor 4, a second fixed conductor 7, a stationary contact 70, a first spring 5, a movable conductive sheet 6, a moving spring 8, and a moving contact 60. The stationary contact 70, the first spring 5, the movable conductive sheet 6, the moving spring 8, and the moving contact 60 are all located inside the second mounting cavity 12.

[0023] The first fixed conductor 4 and the second fixed conductor 7 both extend from the inside of the outer shell 1 into the second mounting cavity 12. The ends of the first fixed conductor 4 and the second fixed conductor 7 are both fixed inside the second mounting cavity 12. A stationary contact 70 is fixed on the second fixed conductor 7. The first fixed conductor 4 and the movable conductive plate 6 are connected by several first springs 5. A movable contact 60 that cooperates with the stationary contact 70 is fixed on the movable conductive plate 6.

[0024] The first spring 5 is a single spring or is composed of several single springs stacked together, preferably composed of three single springs stacked together. The middle part of the single spring is bent into a U-shape. The first spring 5 is riveted to the first fixed conductor 4 and the first spring 5 is riveted to the movable conductive sheet 6.

[0025] To ensure a compact relay structure, the portion of the first fixed conductor 4 located outside the housing 1 and the portion of the second fixed conductor 7 located outside the housing 1 are both located on the same side of the housing 1.

[0026] See Figure 5A movable spring 8 is fixed on the movable conductive sheet 6. The movable spring 8 is composed of a first sheet 81, a connecting sheet 82, a second sheet 83, and a through-rod sheet 84. The first sheet 81, the connecting sheet 82, and the second sheet 83 are connected in sequence to form a U-shape. The first sheet 81 is fixed on the movable conductive sheet 6. Through-rod sheets 84 are provided on both sides of the first sheet 81. Through-rod holes 85 are provided on the through-rod sheets 84. The push rod 31 passes through the through-rod holes 85. The second sheet 83 passes through the area between the two through-rod sheets 84 and abuts against the push rod 31.

[0027] To ensure that the pusher 3 does not deviate during movement, a guide groove 13 is provided in the first mounting cavity 11. The pusher 3 is inserted into the guide groove 13, and the guide groove 13 is adapted to the pusher 3. The pusher 3 moves along the guide groove.

[0028] The partition plate is provided with three clearance holes 10 corresponding to the push rod 31, and the push rod 31 passes through the clearance holes 10.

[0029] To ensure that the switching components do not interfere with each other, the second mounting cavity 12 is divided into three isolated sub-cavities, each sub-cavity corresponding to a switching component, and the switching component extends into the corresponding sub-cavity.

[0030] The portion of the first fixed conductor 4 located outside the housing 1 is equipped with a current transformer 40.

[0031] Example 2: To ensure that the push rod 31 is firmly fixed, the push rod 31 is a metal rod, the push plate 3 is a plastic plate, and a part of the push rod 31 is injection molded inside the push plate 3.

[0032] Example 3: To prevent the electric arc generated when the moving contact 60 and the stationary contact 70 are closed from damaging the relay, the switching assembly is equipped with an arc-blocking grid 15, which is located inside the second mounting cavity 12 and close to the stationary contact 70.

[0033] Example 4: In order to ensure that the force applied by the push rod 31 to the moving spring 8 can be directly applied to the moving contact 60, the first plate 81 and the movable conductive plate 6 are riveted together by the moving contact 60.

[0034] The working process of this utility model: In the operation of this utility model of a high-current, large-gap three-phase relay, when the relay switches from the closed state to the open state, the current direction of the coil yoke assembly 2 is changed, the magnetic field direction of the coil yoke assembly 2 is reversed, the coil yoke assembly 2 drives the magnet assembly 20 to rotate, the actuating body 21 on the magnet assembly 20 drives the push plate 3 to move, the push rod 31 on the push plate 3 pushes the moving spring 8 to move away from the stationary contact 70, the moving spring 8 applies a force to the moving contact 60 to move away from the stationary contact 70, the moving contact 60 separates from the stationary contact 70 under the action of this force, and the relay switches to the open state.

[0035] When the relay switches from the open state to the closed state, the current direction of the coil yoke assembly 2 is changed, the magnetic field direction of the coil yoke assembly 2 is reversed, the coil yoke assembly 2 drives the magnet assembly 20 to rotate, the actuating body 21 on the magnet assembly 20 drives the push plate 3 to move, the push rod 31 on the push plate 3 pushes the moving spring 8 to move closer to the stationary contact 70, the moving spring 8 applies a force close to the stationary contact 70 to the moving contact 60, the moving contact 60 is in contact with the stationary contact 70 under the action of this force, and the relay switches to the closed state.

[0036] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A high-current, large-gap three-phase relay, characterized in that: The assembly includes a housing (1), a partition plate, a coil yoke assembly (2), a magnet assembly (20), a pusher (3), a push rod (31), and a switching assembly. The housing (1) has an internal partition plate that divides the interior of the housing (1) into a first mounting cavity (11) and a second mounting cavity (12). The coil yoke assembly (2) is fixedly installed in the first mounting cavity (11). The magnet assembly (20) is rotatably connected to the interior of the first mounting cavity (11) via a rotating shaft. The magnet assembly (20) cooperates with the coil yoke assembly (2). A toggle body (21) is fixed on the magnet assembly (20), and the pusher (3)... The outer shell (1) is provided with a toggle hole (30). The end of the toggle body (21) is inserted into the toggle hole (30) and movably connected to the push plate (3). Three push rods (31) are fixed on the push plate (3). Three on / off components are fixed on the outer shell (1). Each on / off component corresponds to one push rod (31). The on / off component consists of a first fixed conductor (4), a second fixed conductor (7), a stationary contact (70), a first spring (5), a movable conductive plate (6), a movable spring (8), and a movable contact (60). Both are located inside the second mounting cavity (12). The first fixed conductor (4) and the second fixed conductor (7) extend from the inside of the outer shell (1) into the second mounting cavity (12). The ends of the first fixed conductor (4) and the second fixed conductor (7) are fixed inside the second mounting cavity (12). A stationary contact (70) is fixed on the second fixed conductor (7). The first fixed conductor (4) and the movable conductive plate (6) are connected by several first springs (5). A movable contact (60) that cooperates with the stationary contact (70) is fixed on the movable conductive plate (6). A movable spring is fixed on the movable conductive plate (6). The spring sheet (8) is composed of a first sheet (81), a connecting sheet (82), a second sheet (83), and a through-rod sheet (84). The first sheet (81), the connecting sheet (82), and the second sheet (83) are connected in sequence to form a U-shaped body. The first sheet (81) is fixed on the movable conductive sheet (6). Through-rod sheets (84) are provided on both sides of the first sheet (81). Through-rod holes (85) are provided on the through-rod sheets (84). The push rod (31) passes through the through-rod holes (85). The second sheet (83) passes through the area between the two through-rod sheets (84) and abuts against the push rod (31).

2. The high-current, large-gap three-phase relay as described in claim 1, characterized in that: The first mounting cavity (11) is provided with a guide groove (13), and the pusher (3) is inserted into the guide groove (13). The guide groove (13) is adapted to the pusher (3), and the pusher (3) moves along the guide groove.

3. The high-current, large-gap three-phase relay as described in claim 1, characterized in that: The partition plate is provided with three clearance holes (10) corresponding to the push rod (31), and the push rod (31) passes through the clearance holes (10).

4. The high-current, large-gap three-phase relay as described in claim 1, characterized in that: The push rod (31) is a metal rod, and the push plate (3) is a plastic plate. A portion of the push rod (31) is injection molded inside the push plate (3).

5. The high-current, large-gap three-phase relay as described in claim 1, characterized in that: The second mounting cavity (12) is divided into three isolated sub-cavities, each sub-cavity corresponding to a switching component, which extends into the corresponding sub-cavity.

6. The high-current, large-gap three-phase relay as described in claim 1, characterized in that: The portion of the first fixed conductor (4) located outside the housing (1) is equipped with a current transformer (40).

7. The high-current, large-gap three-phase relay as described in claim 1, characterized in that: The switching assembly is equipped with an arc-blocking grid (15), which is located inside the second mounting cavity (12) and close to the stationary contact (70).

8. The high-current, large-gap three-phase relay as described in claim 1, characterized in that: The portion of the first fixed conductor (4) located outside the outer shell (1) and the portion of the second fixed conductor (7) located outside the outer shell (1) are both located on the same side of the outer shell (1).

9. The high-current, large-gap three-phase relay as described in claim 1, characterized in that: The first sheet (81) and the movable conductive sheet (6) are riveted together by a moving contact (60).

10. The high-current, large-gap three-phase relay as described in any one of claims 1-9, characterized in that: The first spring (5) is a single spring or is composed of several single springs stacked together. The middle part of the single spring is bent into a U-shape. The first spring (5) is riveted to the first fixed conductor (4) and the first spring (5) is riveted to the movable conductor (6).

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