Control mechanism of reclosing switch

Abstract

The present invention discloses a control mechanism for a reclosing switch. The key points of the technical solution include a bracket disposed inside the switch; a permanent magnet moving core disposed on the bracket; a driving member provided with a magnet, and the magnet is inserted into the permanent magnet moving core; a linkage assembly, when the driving member closes the switch, the driving member applies a pressing force to the linkage assembly; a limiting assembly connected to the linkage assembly, when the driving member applies a pressing force to the linkage assembly, the linkage assembly drives the limiting assembly to limit the driving member; a tripping assembly connected to the limiting assembly, and the tripping assembly is used to provide a restoring force for pushing the limiting assembly to reset. The control mechanism for a reclosing switch of the present invention has the effects of rapid response and stable tripping or closing.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical switches, and more specifically to a control mechanism for a reclosing switch. Background Art

[0002] The leakage reclosing switch in the traditional distribution network, that is, the molded case switch, realizes opening and closing by a multi-link mechanism inside the molded case switch. The structure is complex, the reliability is poor, and the failure rate during use is relatively high. The maintenance and replacement of the product are costly, resulting in many drawbacks in actual power distribution applications.

[0003] At present, Chinese Patent No. CN204905836U discloses a safe type automatic reclosing switch, which includes a front cover and a rear cover. A control switch is provided on the left side of the front cover panel. A test button is provided on the lower right side of the front cover panel. Input terminals are provided in the upper left of the front cover. Output terminals are provided in the lower left of the front cover. A circuit board is installed inside the rear cover. A power module, a lightning protection module, a voltage transformer, a current transformer, a zero-sequence current transformer, a magnetic latching relay, a self-locking relay and a single-chip microcomputer circuit are installed on the circuit board. The circuit board is connected to the input terminals, output terminals, control switch and test switch through wires.

[0004] During the use of the above-mentioned reclosing switch, electric control opening and closing operations are realized under the action of the single-chip microcomputer. However, during breaking, a certain response time is required and rapid opening or closing cannot be performed. Moreover, with the use of the switch components, fatigue of the switch occurs, making it impossible to stably perform opening or closing. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a control mechanism for a reclosing switch, which has the effects of rapid response and stable opening or closing.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A control mechanism for a reclosing switch, comprising:

[0008] A bracket, the bracket is arranged inside the switch;

[0009] A permanent magnet moving core, the permanent magnet moving core is arranged on the bracket;

[0010] A driving member, a magnet is arranged on the driving member, the magnet penetrates through the permanent magnet moving core, and the permanent magnet moving core provides a driving force for driving the magnet to move along the axial direction of the permanent magnet moving core;

[0011] A linkage assembly, the linkage assembly is connected to the bracket, and the driving member is used to apply a pressing force to the linkage assembly;

[0012] A limiting component, the limiting component is connected to the linkage component. When the driving member applies a pressing force to the linkage component, the linkage component drives the limiting component to limit the driving member.

[0013] As a further improvement of the present invention, a protrusion is provided at one end of the driving member away from the magnet. The linkage component includes a first rotating shaft, a linkage member, and a torsion spring. The first rotating shaft is connected to the bracket, and the axis of the first rotating shaft is perpendicular to the axis of the driving member. The linkage member is coaxially rotatably connected to the first rotating shaft. The torsion spring is disposed on the first rotating shaft and acts on the linkage member. When the driving member moves toward the permanent magnet moving core under the action of a driving force, the protrusion acts on the end of the linkage member away from the connection with the first rotating shaft and provides a pressing force on the linkage member. The torsion spring deforms under the action of an external force, and the torsion spring has an elastic force to drive the linkage member to reset.

[0014] As a further improvement of the present invention, the limiting component includes a second rotating shaft, a limiting frame, and a limiting block. The second rotating shaft is connected to the bracket, the limiting frame is coaxially rotatably connected to the second rotating shaft, the limiting frame is also rotatably connected to the first rotating shaft, and the torsion spring also acts on the limiting frame. The limiting block is connected to one end of the limiting frame away from the second rotating shaft. A limiting groove is further provided on the side of the driving member facing away from the protrusion. When the protrusion provides a pressing force on the linkage member, it also drives the limiting frame to rotate along the axis of the second rotating shaft, so that the limiting block is clamped into the limiting groove, and the limiting block locks the driving member when it is clamped with the limiting groove.

[0015] As a further improvement of the present invention, the linkage member includes a linkage main body and a tongue portion. The linkage main body is connected to the first rotating shaft, and the tongue portion is connected to the end of the linkage main body away from the first rotating shaft. The tongue portion is inclined toward the limiting frame.

[0016] As a further improvement of the present invention, the control mechanism further includes a tripping component. The tripping component includes a micro control switch, a third rotating shaft, and a tripping control. The third rotating shaft is connected to the bracket, the tripping control is rotatably connected to the third rotating shaft, the micro control switch is connected to the outer wall of the bracket, one end of the tripping control passes through the bracket, a clamping hole is provided at the end of the tripping control passing through the bracket, and the clamping hole is connected to the micro control switch. A tripping control claw is further provided on the tripping control. The micro control switch is used to control the tripping control to rotate along the axis of the third rotating shaft, so that the tripping control claw pushes the limiting component to separate from the driving member.

[0017] As a further improvement of the present invention, a pressing portion is provided at one end of the tripping control away from the clamping hole. When the limiting component limits the driving member, the pressing portion presses on the limiting component to provide a limit to the driving member.

[0018] As a further improvement of the present invention, an extension portion is further provided on the limiting frame, and when the opening gate control claw pushes the limiting assembly, the opening gate control claw pushes against the extension portion.

[0019] As a further improvement of the present invention, the limiting frame is further provided with a clearance groove for the downward pressing part to move.

[0020] As a further improvement of the present invention, a tower spring is further arranged between the micro-switch and the opening control.

[0021] As a further improvement of the present invention, a magnetic protection frame is arranged outside the permanent magnetic moving core.

[0022] The beneficial effects of the present invention are as follows: a driving force for controlling the rapid response of the driving member is provided through the permanent magnetic moving core. When the driving member is controlled to close, the driving member acts on the linkage assembly to drive the limit assembly to limit the driving member, thereby maintaining a stable closed state, and is not prone to opening when subjected to external force. Under the action of the opening assembly, the limit assembly is controlled to release the limit on the driving member, so that when opening, the limit is quickly released and the opening is responded to quickly and stably. Under the action of the permanent magnetic moving core, the opening or closing can still be maintained quickly and stably when the opening or closing is repeated many times. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a three-dimensional structure of the present invention;

[0024] Figure 2 To reflect the overall structural diagram of the driving component;

[0025] Figure 3 To show the structural diagram of the limit assembly;

[0026] Figure 4 To show the structural diagram of the limit assembly and the opening assembly;

[0027] Figure 5 A schematic diagram showing the structure of the limit assembly and linkage assembly;

[0028] Figure 6 A schematic diagram showing the structure of the limit assembly, linkage assembly and drive member;

[0029] Figure 7 It is a structural diagram showing the limit components and linkage components.

[0030] Reference numerals: 1, bracket; 11, permanent magnet moving core; 12, limit pad; 13, card slot; 14, magnetic shield; 2, drive member; 21, magnet; 22, transmission member; 23, protrusion; 24, limit groove; 3, linkage assembly; 31, first rotating shaft; 32, linkage member; 33, torsion spring; 4, limit assembly; 41, second rotating shaft; 42, limit frame; 43, limit block; 44, relief groove; 45, extension; 5, opening mechanism; 51, micro control switch; 52, third rotating shaft; 53, opening control member; 54, card hole; 55, opening control claw; 56, tower spring; 57, pressing portion; 6, contact mechanism; 61, pushing member; 62, triggering handle; 63, contact body; 64, pressing head. Detailed implementation manners

[0031] The present invention will be further described in detail below in conjunction with the drawings and embodiments. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.

[0032] Refer to Figures 1 to 4 As shown, a detailed implementation manner of a permanent magnet type reclosing switch with stable opening and closing of the present invention includes a bracket 1, a permanent magnet moving core 11, a drive member 2, a linkage assembly 3, a limit assembly 4 and an opening mechanism 5 arranged in the switch. A limit pad 12 is also arranged in the switch. A card slot 13 for the bracket 1 to be engaged is formed on the limit pad 12, which improves the connection stability between the bracket 1 and the switch and provides support for the bracket 1. The permanent magnet moving core 11 is arranged on the bracket 1, and a magnetic shield 14 is arranged outside the permanent magnet moving core 11. The magnetic shield 14 is used to protect the permanent magnet moving core 11 so that the permanent magnet moving core 11 maintains magnetism. The drive member 2 is arranged in the bracket 1, a magnet 21 is arranged on the drive member 2, and the magnet 21 penetrates through the permanent magnet moving core 11. The permanent magnet moving core 11 is used to provide a driving force for the magnet 21 to move along the axial direction of the permanent magnet moving core 11.

[0033] The linkage component 3 is connected to the bracket 1. When the permanent magnetic moving core 11 provides driving force to control the driving member 2 to perform closing movement, the driving member 2 applies pressing force to the linkage component 3. A transmission member 22 connected to the contact mechanism 6 is arranged on the magnet 21. The two ends of the transmission member 22 respectively pass through the bracket 1 and are connected to the contact mechanism 6. When the driving member 2 closes the switch, it also drives the contact mechanism 6 to contact with the contacts in the switch. The limit component 4 is connected to the linkage component 3 and the bracket 1. When the driving member 2 applies pressing force to the linkage component 3, the linkage component 3 drives the limit component 4 to contact the driving member 2. The moving part 2 is limited, and the constant driving force provided by the permanent magnetic moving core 11 drives the driving part 2 to respond quickly to closing the switch. After closing the switch, the limiting component 4 limits the driving part 2, so that the contact mechanism 6 maintains stable contact with the contact point; the opening component 5 is used to push the limiting component 4 to reset, so as to release the limiting component 4 from limiting the driving part 2, so that when the permanent magnetic moving core 11 provides driving force, the driving part 2 is controlled to respond quickly to opening the switch, realize a quick response to opening movement, drive the contact mechanism 6 to separate from the contact point, and achieve a fast and stable closing or opening movement.

[0034] refer to Figures 2 to 7 The end of the driving member 2 away from the magnet 21 is provided with a protrusion 23, the linkage assembly 3 includes a first rotating shaft 31, a linkage member 32 and a torsion spring 33, the first rotating shaft 31 is connected to the bracket 1, and the axis of the first rotating shaft 31 is perpendicular to the axis of the driving member 2, the linkage member 32 is rotatably connected to the first rotating shaft 31, the linkage member 32 includes a linkage body and a tongue, the tongue and the linkage body are away from one end connected to the first rotating shaft 31, the torsion spring 33 is arranged on the first rotating shaft 31 and acts on the linkage body On; the limit assembly 4 includes a second rotating shaft 41, a limit frame 42 and a limit block 43. The second rotating shaft 41 is connected to the bracket 1, the limit frame 42 is rotatably connected to the second rotating shaft 41, the limit frame 42 is also rotatably connected to the first rotating shaft 31, the torsion spring 33 also acts on the limit frame 42, the tongue is connected to the linkage body and tilted toward the limit frame 42, the limit block 43 is connected to one end of the limit frame 42 away from the second rotating shaft 41, and a limit groove 24 is provided on the side of the driving member 2 away from the protrusion 23.

[0035] When the permanent magnetic moving core 11 controls the driving member 2 to perform closing movement, the driving member 2 contacts the tongue to provide a pressing force to drive the linkage member 32 to rotate along the first rotating shaft 31. When the linkage member 32 drives the first rotating shaft 31 to rotate, the torsion spring 33 is in a state of deformation and accumulation of force due to external force, thereby driving the limit frame 42 to move along the second rotating shaft 41 toward the driving member 2, so that the limit block 43 contacts the side of the driving member 2 away from the protrusion 23. When the driving member 2 moves to the position corresponding to the limit groove 24 and the limit block 43, the limit block 43 is clamped with the limit groove 24 to limit the driving member 2. At this time, the contact mechanism 6 maintains stable contact with the contact to achieve closing.

[0036] refer to Figures 4 to 6The opening switch assembly 5 includes a micro switch 51, a third rotating shaft 52 and an opening switch control 53. The third rotating shaft 52 is connected to the bracket 1, and the opening switch control 53 is rotatably connected to the third rotating shaft 52. The micro switch 51 is connected to the outer wall of the bracket 1. One end of the opening switch control 53 passes through the bracket 1. A clamping hole 54 is provided at one end of the opening switch control 53 passing through the bracket 1. The clamping hole 54 is connected to the micro switch 51. A opening switch control claw 55 is also provided on the opening switch control 53. The micro switch 51 is used to control the opening switch control 53 to rotate along the axis of the third rotating shaft 52 so that the opening switch control claw 55 pushes the limit assembly 4 to separate from the driving member 2. A pressing portion 57 is provided at the end of the opening switch control 53 away from the opening. A clearance groove 44 for the pressing portion 57 to move is also provided on the limiting frame 42. A tower spring 56 is also provided between the micro switch 51 and the opening switch control 53, and an extension portion 45 is also provided on the limiting frame 42.

[0037] When the permanent magnetic moving core 11 controls the driving member 2 to perform the closing movement, the limit frame 42 moves toward the driving member 2. At this time, the extension portion 45 contacts the opening control claw 55, driving the opening control 53 to rotate along the third rotating shaft 52. When the limit block 43 is locked with the limit groove 24, the pressing portion 57 contacts the outer wall of the limit frame 42 on the side away from the driving member 2, thereby limiting the limit frame 42, making it difficult to reset the limit frame 42, and further maintaining a firm closing. At this time, the tower spring 56 is compressed and deformed;

[0038] When opening the circuit breaker, the micro-switch 51 provides a magnetic force to attract the opening control claw 55 to move toward the micro-switch 51, and the opening control claw 55 pushes against the extension part 45 on the limit frame 42, and releases the limit of the limit frame 42 by the pressing part 57, and the permanent magnetic moving core 11 provides a driving force to control the driving member 2 in the direction away from the permanent magnetic moving core 11, and the torsion spring 33 releases the elastic force to control the limit frame 42 to reset and rotate, and the limit block 43 separates from the limit groove 24 to release the limit on the driving member 2. At this time, the driving member 2 is reset under the action of the driving force, driving the contact mechanism 6 to separate from the contact point, thereby realizing a quick response to opening the circuit breaker. When opening the circuit breaker, the tower spring 56 releases the elastic force to drive the opening control 53 to reset.

[0039] refer to Figure 1 The contact mechanism 6 includes a pusher 61, a touch handle 62, a contact body 63 and a pressure head 64. The touch handle 62 is connected to the contact body 63. The pusher 61 connects the contact handle 62 and the transmission member 22. A moving groove is provided on the bracket 1 for the transmission member 22 to move along the axial direction of the driving member 2. A plurality of contact parts are provided on the contact body 63. Any contact part is respectively connected to the pressure head 64. Rotating heads are also formed at both ends of the contact body 63. An arc groove for the rotating head to be set is provided in the switch, so that when the driving member 2 opens or closes, the transmission member 22 is driven to move along the moving groove, which drives the pusher 61 to move, so as to drive the contact body 63 to rotate, so as to realize the contact of the pressure head 64 with the contact point.

[0040] Working principle and its effects: A driving force for quickly responding to the control driving member 2 is provided by the permanent magnet moving core 11. When the control driving member 2 is closed, the driving member 2 acts on the linkage assembly 3 to drive the limiting assembly 4 to limit the driving member 2, maintaining a stable closing state and being not prone to opening when subjected to an external force. Under the action of the opening assembly 5, the limiting assembly 4 is controlled to release the limit on the driving member 2, so that during opening, the limit can be quickly released and a quick and stable response to opening can be achieved. Under the action of the permanent magnet moving core 11, quick and stable opening or closing can still be maintained during multiple repeated opening or closing operations.

[0041] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. Any technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A control mechanism for a reclosing switch, characterized in that, Comprising: A bracket (1), the bracket (1) being disposed within the switch; A permanent magnet moving core (11), the permanent magnet moving core (11) being disposed on the bracket (1); A driving member (2), a magnet (21) being disposed on the driving member (2), the magnet (21) passing through the permanent magnet moving core (11), and the permanent magnet moving core (11) providing a driving force for driving the magnet (21) to move along the axial direction of the permanent magnet moving core (11); A linkage assembly (3), the linkage assembly (3) being connected to the bracket (1), and the driving member (2) being used to apply a pressing force to the linkage assembly (3); A limiting assembly (4), the limiting assembly (4) being connected to the linkage assembly (3), and when the driving member (2) applies a pressing force to the linkage assembly (3), the linkage assembly (3) drives the limiting assembly (4) to limit the driving member (2); The linkage assembly (3) includes a first rotating shaft (31), a linkage member (32) and a torsion spring (33), the linkage member (32) includes a linkage main body and a tongue portion, the linkage main body is connected to the first rotating shaft (31), the tongue portion is connected to an end of the linkage main body departing from the first rotating shaft (31), and the tongue portion is inclined towards one side of the limiting frame (42).

2. The control mechanism of the reclosing switch according to claim 1, characterized in that: A protrusion (23) is disposed at an end of the driving member (2) away from the magnet (21), the first rotating shaft (31) is connected to the bracket (1), the axis of the first rotating shaft (31) is perpendicularly disposed to the axis of the driving member (2), the linkage member (32) is coaxially rotatably connected to the first rotating shaft (31), the torsion spring (33) is disposed on the first rotating shaft (31) and acts on the linkage member (32), when the driving member (2) moves towards the permanent magnet moving core (11) under the action of a driving force, the protrusion (23) acts on an end of the linkage member (32) away from the connection with the first rotating shaft (31), and provides a pressing force on the linkage member (32), the torsion spring (33) deforms under the action of an external force, and the torsion spring (33) has an elastic force for driving the linkage member (32) to reset.

3. The control mechanism of the reclosing switch according to claim 2, characterized in that: The limiting assembly (4) includes a second rotating shaft (41), a limiting frame (42) and a limiting block (43), the second rotating shaft (41) is connected to the bracket (1), the limiting frame (42) is coaxially rotatably connected to the second rotating shaft (41), the limiting frame (42) is further rotatably connected to the first rotating shaft (31), the torsion spring (33) further acts on the limiting frame (42), the limiting block (43) is connected to an end of the limiting frame (42) away from the second rotating shaft (41), a limiting groove (24) is further formed on a side of the driving member (2) departing from the protrusion (23), when the protrusion (23) provides a pressing force on the linkage member (32), it further drives the limiting frame (42) to rotate along the axis of the second rotating shaft (41), so that the limiting block (43) is clamped into the limiting groove (24), and when the limiting block (43) is clamped with the limiting groove (24), the driving member (2) is locked.

4. The control mechanism of the reclosing switch according to claim 1, characterized in that: The control mechanism further comprises a switch-off assembly (5), the switch-off assembly (5) comprising a micro switch (51), a third rotating shaft (52) and a switch-off control (53), the third rotating shaft (52) being connected to the bracket (1), the switch-off control (53) being rotatably connected to the third rotating shaft (52), the micro switch (51) being connected to the outer wall of the bracket (1), one end of the switch-off control (53) passing through the bracket (1), a clamping hole (54) being provided at one end of the switch-off control (53) passing through the bracket (1), the clamping hole (54) being connected to the micro switch (51), and a switch-off control claw (55) being further provided on the switch-off control (53), the micro switch (51) being used to control the switch-off control (53) to rotate along the axis of the third rotating shaft (52), so that the switch-off control claw (55) pushes the limit assembly (4) to separate from the drive member (2).

5. The control mechanism of the reclosing switch according to claim 4, characterized in that: A pressing portion (57) is provided at one end of the opening control (53) away from the latch hole (54); when the limiting assembly (4) limits the position of the driving member (2), the pressing portion (57) is pressed onto the limiting assembly (4) to provide a limit for the driving member (2).

6. The control mechanism of the reclosing switch according to claim 5, characterized in that: An extension portion (45) is also provided on the limiting frame (42), and when the opening gate control claw (55) pushes the limiting assembly (4), the opening gate control claw (55) pushes against the extension portion (45).

7. The control mechanism of the reclosing switch according to claim 6, characterized in that: The limiting frame (42) is also provided with a clearance groove (44) for the downward pressing part (57) to move.

8. The control mechanism of the reclosing switch according to claim 7, characterized in that: A tower spring (56) is also provided between the micro-switch (51) and the opening control unit (53).

9. The control mechanism of the reclosing switch according to any one of claims 1-8, characterized in that: A magnetic protection frame (14) is arranged outside the permanent magnetic moving core (11).

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