Pluggable liquid magnetic circuit breaker

Abstract

The utility model relates to the technical field of circuit breakers, and discloses a plug-in type liquid magnetic circuit breaker, which comprises an upper shell and a lower shell, the lower shell is provided with a moving contact structure and a static contact structure, the moving contact structure comprises a wiring assembly, a liquid magnetic release and an operation assembly, the lower shell is provided with an installation shell, and the installation shell is provided with a plug-in type liquid magnetic circuit breaker. The upper shell is provided with a fastening piece used for fixing the mounting shell, the wiring assembly is arranged in the mounting shell, the wiring assembly is arranged on the mounting shell, the mounting shell is fixed on the lower shell through the fastening piece, the mounting shell is fixed on the lower shell, the wiring assembly can be assembled in advance, and the wiring assembly is arranged in the mounting shell. Therefore, the wiring assembly can be directly installed on the lower shell, the operation steps of workers are reduced, the installation difficulty of the circuit breaker is reduced, the circuit breaker can be rapidly assembled, and the requirements of the modern industry for efficient production and assembly are met.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of circuit breakers, in particular to a plug-in liquid magnetic circuit breaker. BACKGROUND

[0002] The liquid magnetic circuit breaker is an electrical protection device that uses the interaction between liquid and magnetic field to realize the closing and opening of the switch. The working principle of the plug-in liquid magnetic circuit breaker is based on the combination of hydraulic pressure and electromagnetic force. The plug-in liquid magnetic circuit breaker is usually inserted into equipment to connect the circuit breaker and the equipment, and is suitable for overcurrent protection of rail transit, ships, data centers and semiconductor equipment.

[0003] In the related art, the circuit breaker comprises an upper shell and a lower shell, and the lower shell is provided with a moving contact structure and a static contact structure. The moving contact structure comprises a wiring assembly, a liquid magnetic release and an operating assembly, and the wiring assembly, the liquid magnetic release and the operating assembly are all arranged on the lower shell.

[0004] Since the wiring assembly, the liquid magnetic release and the operating assembly are all arranged on the lower shell, the operation steps of the workers are more when assembling the circuit breaker, and the assembly of the circuit breaker is more complicated, which cannot meet the needs of modern industry for efficient production and assembly. CONTENT OF THE INVENTION

[0005] In order to improve the problem that the assembly of the circuit breaker is more complicated, the application provides a plug-in liquid magnetic circuit breaker.

[0006] The application provides a plug-in liquid magnetic circuit breaker, which adopts the following technical scheme:

[0007] The plug-in liquid magnetic circuit breaker comprises an upper shell and a lower shell, the lower shell is provided with a moving contact structure and a static contact structure, the moving contact structure comprises a wiring assembly, a liquid magnetic release and an operating assembly, the lower shell is provided with a mounting shell, the upper shell is provided with a fastener for fixing the mounting shell, and the wiring assembly is arranged in the mounting shell.

[0008] By adopting the above technical scheme, the wiring assembly is arranged on the mounting shell, and the fastener fixes the mounting shell, so that the mounting shell is fixed on the lower shell, the wiring assembly can be assembled in advance, the wiring assembly can be directly installed on the lower shell, the operation steps of the workers are reduced, the installation difficulty of the circuit breaker is reduced, the circuit breaker can be quickly assembled, and the needs of modern industry for efficient production and assembly are met.

[0009] Optionally, the wiring assembly comprises a limiting strip, the limiting strip is arranged on the mounting shell, the limiting strip has elasticity, a first inlet for inserting a wire is formed in the mounting shell, and the limiting strip shields the first inlet.

[0010] By adopting the technical scheme, the limiting strip is arranged on the mounting shell and has elasticity, the worker inserts the wire into the first entrance, if the wire is hard, the wire can drive the limiting strip to deform, at this time, the deformed limiting strip does not shield the first entrance, until the wire is inserted into the mounting shell, the limiting strip is reset to clamp the wire, so that the wire can be fixed in the first entrance, and the connection of the wire is realized.

[0011] Optionally, the mounting shell is provided with an elastic stop strip, the stop strip comprises a stop mounting portion and a stop deformation portion, the stop mounting portion is arranged on the mounting shell, the stop deformation portion is provided with a mounting block, the stop mounting portion drives the stop deformation portion to deform towards the direction of the limiting strip, and the mounting block is located on the rotating path of the limiting strip; when the limiting strip abuts against the surface of the mounting block towards the stop mounting portion, the first entrance is not blocked; when the wire abuts against the stop deformation portion, the mounting block does not limit the limiting strip.

[0012] By adopting the technical scheme, the worker drives the limiting strip to deform until the limiting strip abuts against the surface of the mounting block towards the stop mounting portion, at this time, the first entrance is not blocked, and the mounting block limits the limiting strip, so that the soft wire can be inserted into the first entrance, avoiding that the soft wire is difficult to drive the limiting strip to deform, and then the soft wire abuts against the stop deformation portion, the stop deformation portion deforms, at this time, the mounting block does not limit the limiting strip, the limiting strip can be reset, and the limiting strip limits the wire, avoiding the movement of the wire in the mounting shell.

[0013] Optionally, the stop mounting portion is provided with a mounting piece, the mounting piece is located on the side, away from the limiting strip, of the stop strip, and the mounting piece drives the stop strip to deform towards the direction of the limiting strip.

[0014] By adopting the technical scheme, the mounting piece is located on the side, away from the limiting strip, of the stop strip, the mounting piece can drive the stop strip to deform towards the direction of the limiting strip, the limiting strip can limit the stop strip, the stop strip stably shields the first entrance, and the subsequent wire is inserted into the first entrance.

[0015] Optionally, the mounting shell is provided with an operation hole, and an operation strip is slidably connected in the operation hole, the operation strip is used for driving the limiting strip to deform towards the direction of the stop strip.

[0016] By adopting the technical scheme, the worker can directly slide the operation strip, the operation strip drives the limiting strip to deform, the limiting strip can stably deform towards the direction of the stop strip, the worker does not need to take a tool to drive the limiting strip, and the difficulty of the worker in driving the limiting strip to deform is reduced.

[0017] Optionally, the installation shell is provided with an operation block, the operation block is located on the movement path of the operation strip, when the operation strip abuts against the operation block, the limiting strip abuts against the side of the installation block facing the stop installation part.

[0018] By the above technical scheme, when the operation block is located on the movement path of the operation strip, the operation strip is difficult to continue to move when abutting against the operation block, so that the worker knows that the limiting strip has abutted against the side of the installation block facing the stop installation part, avoiding the case that the worker excessively moves the operation strip to cause the limiting strip to be damaged, thereby prolonging the service life of the limiting strip.

[0019] Optionally, the side of the installation block away from the stop installation part is provided with an installation inclined surface, the distance between the installation inclined surface and the stop installation part gradually decreases along the direction from the first inlet to the stop strip, and the installation inclined surface is located on the rotation path of the limiting strip.

[0020] By the above technical scheme, the distance between the installation inclined surface and the stop installation part gradually decreases along the direction from the first inlet to the stop strip, and the installation inclined surface is located on the rotation path of the limiting strip, so that the limiting strip can drive the stop strip to deform along the installation inclined surface in the process of rotation, so as to avoid the installation block from shielding the limiting strip, and enable the limiting strip to abut against the side of the installation block facing the stop installation part.

[0021] Optionally, the lower shell is provided with a bottom shell, the bottom shell is provided with an in-place detection structure, the in-place detection structure is used for detecting whether the circuit breaker is installed in place, and the fastener is used for fixing the bottom shell to the lower shell.

[0022] By the above technical scheme, the in-place detection structure can be pre-assembled by installing the bottom shell on the lower shell, further reducing the assembly steps between the upper shell and the lower shell, and speeding up the assembly speed of the circuit breaker.

[0023] Optionally, the in-place detection structure includes a handle, a moving block and a moving spring, the moving spring is arranged on the bottom shell, the bottom shell is provided with a placement hole through which the moving block passes, the moving spring drives the moving block to be located in the bottom shell, and the handle drives the moving block to protrude out of the placement hole.

[0024] By the above technical scheme, the worker rotates the handle to drive the moving block to move, so that the moving block extends out of the bottom shell through the placement hole, so that the moving block can be inserted into the moving groove of the equipment, and the worker can determine whether the circuit breaker is installed in place by rotating the handle; the moving spring drives the moving block to move into the bottom shell, so that the moving block does not hinder the circuit breaker from being inserted into the equipment.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] 1. The installation shell is fixed on the lower shell through the wiring assembly and the fastener, the wiring assembly can be assembled in advance, and the wiring assembly can be directly installed on the lower shell, so that the operation steps of the workers are reduced, the installation difficulty of the circuit breaker is reduced, the circuit breaker can be quickly assembled, and the needs of modern industry for efficient production and assembly are met.

[0027] 2. The worker drives the limiting strip to deform until the limiting strip abuts against the surface of the installation block towards the stop installation part, at this time, the first inlet is not blocked, the installation block limits the limiting strip, so that the soft wire can be inserted into the first inlet, and the soft wire is difficult to push the limiting strip to deform, then the soft wire abuts against the stop deformation part, the stop deformation part is deformed, at this time, the installation block does not limit the limiting strip, the limiting strip can be reset, so that the limiting strip limits the wire, and the movement of the wire in the installation shell is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic diagram of an embodiment of the present application;

[0029] Figure 2 is a structural schematic diagram of a movable contact structure in an embodiment of the present application;

[0030] Figure 3 is a structural schematic diagram of a limiting strip in an embodiment of the present application;

[0031] Figure 4 is an exploded schematic diagram of a bottom shell in an embodiment of the present application.

[0032] Label: 1, upper shell; 11, fastener; 2, lower shell; 21, movable contact structure; 22, static contact structure; 221, liquid magnetic release; 222, operating assembly; 223, wiring assembly; 224, limiting strip; 225, limiting mounting portion; 226, limiting deformation portion; 227, wiring block; 23, placement groove; 3, mounting shell; 31, first inlet; 32, second inlet; 33, stopper; 331, stopper mounting portion; 332, stopper deformation portion; 333, mounting piece; 335, mounting block; 336, mounting inclined surface; 34, containing groove; 341, containing groove; 35, operating hole; 351, operating strip; 352, operating block; 353, convex strip; 36, mounting groove; 4, switch lock assembly; 41, sliding strip; 411, sliding block; 412, sliding inclined surface; 42, locking block; 421, locking inclined surface; 43, locking spring; 44, sliding hole; 45, locking hole; 46, reset hole; 461, reset block; 462, reset spring; 5, bottom shell; 51, placement hole; 6, in-place detection structure; 61, handle; 611, connecting rod; 62, moving block; 621, connecting hole; 622, moving groove; 63, moving spring. DETAILED DESCRIPTION

[0033] The following will be described in detail in combination with the accompanying drawings. Figures 1-4 The present application is further described in detail.

[0034] The embodiment discloses a plug-in liquid magnetic circuit breaker. Referring to Figure 1 and Figure 2 A plug-in liquid magnetic circuit breaker comprises an upper shell 1 and a lower shell 2, and the lower shell 2 is provided with a movable contact structure 21 and a static contact structure 22.

[0035] Referring to Figure 1 and Figure 2 The lower shell 2 is provided with a mounting shell 3, and the two wiring assemblies 223 are arranged on the mounting shell 3. The surface of the mounting shell 3 is provided with a first inlet 31 and a second inlet 32, and the first inlet 31 and the second inlet 32 are both for inserting wires. The first inlet 31 corresponds to one of the wiring assemblies 223, and the second inlet 32 corresponds to the other wiring assembly 223.

[0036] Referring to Figure 2 and Figure 3The wiring assembly 223 comprises a limiting strip 224 and a wiring block 227. The limiting strip 224 is elastic. A mounting groove 36 is formed on the surface of the mounting shell 3. A containing groove 34 is formed on the surface of the mounting shell 3 and communicates with the mounting groove 36. The wiring block 227 is mounted on the mounting shell 3 and is used for communicating with the wire. The limiting strip 224 comprises a limiting mounting portion 225 and a limiting deformation portion 226. The limiting mounting portion 225 is integrally formed on the limiting deformation portion 226. The limiting mounting portion 225 is inserted into the containing groove 34, and the limiting deformation portion 226 is located in the mounting groove 36. The limiting mounting portion 225 drives the limiting deformation portion 226 to deform towards the direction of the first inlet 31, and the limiting deformation portion 226 can block the opening of the first inlet 31.

[0037] With reference to Figure 3 The mounting shell 3 is provided with a stop strip 33. The stop strip 33 has elastic deformation capability. The stop strip 33 comprises a stop mounting portion 331 and a stop deformation portion 332. The stop mounting portion 331 is integrally formed on the stop deformation portion 332. A containing groove 341 is formed on the surface of the mounting shell 3 and communicates with the mounting groove 36. The containing groove 341 is used for inserting the stop mounting portion 331. The stop mounting portion 331 drives the stop deformation portion 332 to deform towards the direction of the first inlet 31. The surface of the stop mounting portion 331 away from the first inlet 31 is fixedly connected with a mounting sheet 333. The mounting sheet 333 abuts against the groove wall of the mounting groove 36, and the mounting sheet 333 drives the stop deformation portion 332 to deform towards the direction of the first inlet 31.

[0038] With reference to Figure 3 The surface of the stop deformation portion 332 towards the first inlet 31 is fixedly connected with two mounting blocks 335. The surface of the mounting block 335 towards the first inlet 31 is formed with a mounting inclined surface 336. The distance between the mounting inclined surface 336 and the first inlet 31 gradually increases along the direction from the stop mounting portion 331 to the stop deformation portion 332. The mounting inclined surface 336 is located on the rotating path of the limiting strip 224.

[0039] With reference to Figure 2 And Figure 3 The surface of the mounting shell 3 is formed with an operation hole 35 which communicates with the mounting groove 36. An operation strip 351 is slidably connected in the operation hole 35. The limiting deformation portion 226 is located on the sliding path of the operation strip 351. An operation block 352 is fixedly connected on the hole wall of the operation hole 35. The operation strip 351 is integrally formed with a convex strip 353. The operation block 352 is located on the sliding path of the convex strip 353. When the convex strip 353 abuts against the operation block 352, the operation strip 351 drives the limiting deformation portion 226 to abut against the surface of the mounting block 335 towards the stop mounting portion 331. At this time, the limiting deformation portion 226 does not shield the first inlet 31.

[0040] With reference to Figure 2 AndFigure 3 The worker drives the operation bar 351 to slide, and the operation bar 351 drives the limiting deformation part 226 to deform until the convex bar 353 abuts against the operation block 352. At this time, the limiting deformation part 226 abuts against the surface of the mounting block 335 towards the stop mounting part 331.

[0041] With reference to Figure 4 The lower shell 2 is provided with a switch lock assembly 4, and the switch lock assembly 4 is located below the wiring assembly 223. In the embodiment, below refers to below in the figure. The switch lock assembly 4 includes a sliding bar 41, a locking block 42 and a locking spring 43, and the sliding bar 41 and the locking block 42 are both slidingly connected to the lower shell 2. The surface of the lower shell 2 is provided with a sliding hole 44 for the sliding bar 41 to pass through. The lower shell 2 is provided with a locking hole 45 for the locking block 42 to pass through. One end of the locking spring 43 is fixedly connected to the locking block 42, and the other end of the locking spring 43 is fixedly connected to the lower shell 2. The locking spring 43 drives the locking block 42 to pass through the locking hole 45, and at this time, the locking block 42 is inserted into the corresponding locking groove of the equipment.

[0042] With reference to Figure 4 The surface of the sliding bar 41 is provided with a reset hole 46, and the lower shell 2 is fixedly connected with a reset block 461, which can be inserted into the reset hole 46. The reset block 461 is provided with a reset spring 462, one end of the reset spring 462 abuts against the reset block 461, and the other end of the reset spring 462 abuts against the hole wall of the reset hole 46. The reset spring 462 drives the sliding bar 41 to be completely located on the lower shell 2. The surface of the sliding bar 41 is integrally formed with a sliding block 411, and the sliding block 411 cannot pass through the sliding hole 44.

[0043] With reference to Figure 4 The surface of the sliding bar 41 is provided with a sliding slope 412, and the distance between the sliding slope 412 and the sliding hole 44 gradually decreases along the direction of the sliding bar 41 to the locking hole 45, and the sliding slope 412 is located on the sliding path of the locking block 42. The locking block 42 is provided with a locking slope 421, and the distance between the locking slope 421 and the locking hole 45 gradually decreases along the direction of the locking block 42 to the sliding hole 44. The locking slope 421 and the sliding slope 412 abut against each other.

[0044] With reference to Figure 4 The worker pulls the sliding block 411, and the sliding bar 41 drives the locking block 42 to move through the sliding slope 412 and the locking slope 421, so that the locking block 42 is separated from the locking groove in the equipment, so as to take out the circuit breaker from the equipment.

[0045] With reference to Figure 4The lower shell 2 is provided with a placing groove 23, and the placing groove 23 is provided with the bottom shell 5. The bottom shell 5 is provided with a to-position detection structure 6, which is used for detecting whether the circuit breaker is inserted into the equipment. The to-position detection structure 6 comprises a handle 61, a moving block 62 and a moving spring 63. The handle 61 is rotatably connected to the bottom shell 5, and the moving block 62 is slidably connected to the bottom shell 5. The handle 61 is provided with a connecting rod 611, one end of the connecting rod 611 is rotatably connected to the handle 61, and the other end of the connecting rod 611 is rotatably connected to the operating assembly 222. The surface of the moving block 62 is provided with a connecting hole 621 for the connecting rod 611.

[0046] With reference to Figure 4 The surface of the moving block 62 is provided with a moving groove 622, one end of the moving spring 63 is fixedly connected to the bottom shell 5, and the other end of the moving spring 63 is fixedly connected to the bottom wall of the moving groove 622. The surface of the bottom shell 5 is provided with a placing hole 51 communicating with the placing groove 23, and the placing hole 51 is used for protruding the moving block 62. When the moving block 62 is completely located in the bottom shell 5, the moving spring 63 is in a non-stressed state; when the moving block 62 protrudes from the bottom shell 5, the moving spring 63 is in a stretched state.

[0047] With reference to Figure 4 When the worker rotates the handle 61, the handle 61 drives the moving block 62 to move through the connecting rod 611, so that the moving block 62 protrudes from the placing hole 51 and is inserted into the corresponding groove of the equipment, so as to detect whether the circuit breaker is installed in place.

[0048] With reference to Figure 1 The upper shell 1 is provided with a fastener 11, which comprises a plurality of fastening bolts. The fastening bolts fix the mounting shell 3 between the upper shell 1 and the lower shell 2 through the upper shell 1, the mounting shell 3 and the lower shell 2; or the fastening bolts fix the bottom shell 5 between the upper shell 1 and the lower shell 2 through the upper shell 1, the bottom shell 5 and the lower shell 2.

[0049] The implementation principle of the plug-in liquid magnetic circuit breaker is that the worker installs the static contact structure 22, the operating mechanism, the liquid magnetic release 221 and the switch lock assembly 4 into the lower shell 2, then the worker installs the mounting shell 3 and the bottom shell 5 in the lower shell 2, and finally the worker installs the upper shell 1 on the lower shell 2, so as to realize the assembly of the circuit breaker.

[0050] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Unless otherwise defined, the terms used in the specification and claims of the present application, such as "first", "second", "third", and the like, are not intended to denote any order, quantity, or importance, but are merely used to distinguish one component from another. The terms "one", "a", and the like are not intended to denote the number of objects, but are intended to denote the presence of at least one. The terms "comprise", "include" and the like are intended to denote the presence of the elements or components listed after the terms "comprise", "include" and the like, but do not exclude the presence of other elements or components. The terms "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships may also be changed accordingly.

[0051] The above description is merely preferred embodiments of the present application, and not intended to limit the present application. Any modification, equivalent replacement, improvement, and the like made within the spirit and principle of the present application shall be included in the scope of the present application.

Claims

1. A plug-in liquid magnetic circuit breaker, comprising an upper shell (1) and a lower shell (2), wherein the lower shell (2) is provided with a movable contact structure (21) and a static contact structure (22), the movable contact structure (21) comprises a wiring assembly (223), a liquid magnetic release (221) and an operating assembly (222), characterized in that: The lower shell (2) is provided with a mounting shell (3), the upper shell (1) is provided with a fastener (11) for fixing the mounting shell (3), and the wiring assembly (223) is arranged in the mounting shell (3).

2. A plug-in fluid magnetic circuit breaker according to claim 1, characterized in that: The wiring assembly (223) comprises a limiting strip (224) arranged on the mounting shell (3), the limiting strip (224) is elastic, and the mounting shell (3) is provided with a first entrance (31) for inserting a wire, and the limiting strip (224) blocks the first entrance (31).

3. A plug-in hydromagnetic circuit breaker according to claim 2, characterized in that: The mounting shell (3) is provided with an elastic stop strip (33), the stop strip (33) comprises a stop mounting portion (331) and a stop deformation portion (332), the stop mounting portion (331) is arranged on the mounting shell (3), the stop deformation portion (332) is provided with a mounting block (335), the stop mounting portion (331) drives the stop deformation portion (332) to deform towards the limiting strip (224), and the mounting block (335) is located on a rotating path of the limiting strip (224); when the limiting strip (224) abuts against the surface of the mounting block (335) towards the stop mounting portion (331), the first entrance (31) is not blocked; when the wire abuts against the stop deformation portion (332), the mounting block (335) does not limit the limiting strip (224).

4. A plug-in fluid magnetic circuit breaker according to claim 3, characterized in that: The stop mounting portion (331) is provided with a mounting piece (333), the mounting piece (333) is located on a side of the stop strip (33) away from the limiting strip (224), and the mounting piece (333) drives the stop strip (33) to deform towards the limiting strip (224).

5. A plug-in hydromagnetic circuit breaker according to claim 3, characterized in that: The mounting shell (3) is provided with an operation hole (35), and an operation strip (351) is slidably connected in the operation hole (35), the operation strip (351) is used for driving the limiting strip (224) to deform towards the stop strip (33).

6. A plug-in hydromagnetic circuit breaker according to claim 5, characterized in that: The mounting shell (3) is provided with an operation block (352), the operation block (352) is located on a moving path of the operation strip (351), and when the operation strip (351) abuts against the operation block (352), the limiting strip (224) abuts against the mounting block (335) on a side towards the stop mounting portion (331).

7. A plug-in hydromagnetic circuit breaker according to claim 3, characterized in that: A mounting inclined surface (336) is formed on a side of the mounting block (335) away from the stop mounting portion (331), a distance between the mounting inclined surface (336) and the stop mounting portion (331) gradually decreases in a direction from the first entrance (31) to the stop strip (33), and the mounting inclined surface (336) is located on the rotating path of the limiting strip (224).

8. A plug-in hydromagnetic circuit breaker according to claim 1, characterized in that: The lower shell (2) is provided with a bottom shell (5), the bottom shell (5) is provided with a to-position detection structure (6), the to-position detection structure (6) is used for detecting whether the circuit breaker is installed in place, and the fastener (11) is used for fixing the bottom shell (5) on the lower shell (2).

9. A plug-in hydromagnetic circuit breaker according to claim 8, characterized in that: The in-place detection structure (6) comprises a handle (61), a moving block (62) and a moving spring (63), the moving spring (63) is arranged on the bottom shell (5), the bottom shell (5) is provided with a placing hole (51) for the moving block (62) to pass through, the moving spring (63) drives the moving block (62) to be located in the bottom shell (5), and the handle (61) drives the moving block (62) to protrude from the placing hole (51).

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