Modularized plug-in circuit breaker

Abstract

The utility model relates to the technical field of circuit breakers, and discloses a modularized plug-in 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 lower shell is provided with a mounting groove, the mounting groove is provided with a bottom shell, and the bottom shell is provided with a fastener for fixing the bottom shell. According to the circuit breaker, the bottom shell is installed in the installation groove through the fastener, and the in-place detection structure is arranged on the bottom shell, so that the in-place detection structure can be assembled in advance, the steps of assembling the upper shell and the lower shell of the circuit breaker are reduced, the assembling time of the circuit breaker is further shortened, the assembling difficulty of the circuit breaker is further reduced, and the assembling efficiency of the circuit breaker is improved. And the requirements of efficient production and assembly can be met.

Description

TECHNICAL FIELD

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

[0002] A circuit breaker is an electrical protection device, and the working principle of a hydraulic magnetic circuit breaker is based on the combination of hydraulic pressure and electromagnetic oven. When an overload or short circuit occurs in the circuit, the electromagnet generates a magnetic force, which is transmitted to the hydraulic system through a mechanical mechanism, causing the liquid pressure in the hydraulic system to rise sharply, thereby rapidly opening the contacts of the circuit breaker and cutting off the circuit to protect electrical equipment and the circuit.

[0003] In related technologies, a circuit breaker includes an upper shell, a lower shell, a moving contact structure, a static contact structure, and a position detection structure between the upper shell and the lower shell. The position detection structure is used to detect whether the circuit breaker is installed in place. The position detection structure includes a limiting block and a driving member. The driving member drives the limiting block to insert into a groove of the device to detect whether the circuit breaker is installed in place.

[0004] The installation process of the circuit breaker needs to sequentially install the moving contact structure, the static contact structure, and the position detection structure into the lower shell, and then install the upper shell on the lower shell to realize the assembly of the circuit breaker. However, due to the complex structure of the moving contact structure, the static contact structure, and the position detection structure, the installation process of the circuit breaker is relatively cumbersome, and it is difficult to quickly install the circuit breaker, thereby failing to meet the needs of efficient production and assembly. CONTENT OF THE UTILITY MODEL

[0005] In order to improve the problem that the installation process of the circuit breaker is relatively cumbersome, the present application provides a modular plug-in circuit breaker.

[0006] The present application provides a modular plug-in circuit breaker, which adopts the following technical solution:

[0007] A modular plug-in circuit breaker includes an upper shell and a lower shell. The lower shell is provided with a moving contact structure and a static contact structure. An installation slot is formed in the lower shell. A bottom shell is arranged at the installation slot. A fastener is arranged on the bottom shell for fixing the bottom shell. A position detection structure is arranged on the bottom shell.

[0008] By adopting the above technical solution, the bottom shell is installed in the installation slot by the fastener, and the position detection structure is arranged on the bottom shell, so that the position detection structure can be pre-assembled, thereby reducing the steps of assembling the upper shell and the lower shell of the circuit breaker, further reducing the time and difficulty of assembling the circuit breaker, and meeting the needs of efficient production and assembly.

[0009] Optionally, the in-place detection structure comprises a rotating handle, a limiting block and a limiting spring, the limiting spring is arranged on the bottom shell, the bottom shell is provided with a through hole for the limiting block to pass through, the limiting spring drives the limiting block to be located in the bottom shell, and the rotating handle drives the limiting block to be inserted into a corresponding groove of the equipment.

[0010] By adopting the above technical scheme, the rotating handle drives the limiting block to move, so that the limiting block can be inserted into the corresponding groove of the equipment, and at this time, the staff confirms the position of the circuit breaker by rotating the handle; the limiting spring drives the limiting block to be located on the bottom shell, so that the limiting block does not affect the installation of the circuit breaker under normal circumstances, so that the circuit breaker can be stably installed in the equipment.

[0011] Optionally, a connecting rod is rotatably connected to the movable contact structure, the connecting rod is rotatably connected to the rotating handle, and the connecting rod is located on the movement path of the limiting block.

[0012] By adopting the above technical scheme, the staff operates the rotating handle, and since the connecting rod is located on the movement path of the limiting block, the connecting rod can drive the limiting block to move, so that the limiting block can protrude from the through hole and be inserted into the corresponding groove of the equipment.

[0013] Optionally, the lower shell is provided with a switch lock structure, the switch lock structure comprises an operating strip, a locking block and a locking spring, the operating strip and the locking block are both slidably connected to the lower shell, the lower shell is provided with a through hole for the locking block to pass through, the locking spring is arranged on the lower shell, the locking spring drives the locking block to protrude from the through hole, and the operating strip drives the locking block to move into the lower shell; when the operating strip is pulled out, the locking block is completely located in the lower shell; and when the operating strip is not pulled out, the locking block protrudes from the lower shell.

[0014] By adopting the above technical scheme, the staff pulls the operating strip, the operating strip drives the locking block to move, the locking block can be smoothly moved into the lower shell, so that the locking block does not limit the movement of the circuit breaker, so that the circuit breaker can be smoothly taken out of the equipment; the locking spring drives the locking block to protrude from the lower shell, so that the locking block can be inserted into the corresponding locking groove of the equipment, the circuit breaker and the equipment are fixed to each other, external personnel are prevented from mistakenly pulling the circuit breaker out of the equipment, and the stability of the connection between the circuit breaker and the equipment is further increased.

[0015] Optionally, an operating inclined surface is formed in the operating strip, the distance between the operating inclined surface and the through hole gradually decreases along the pulling-out direction of the operating strip, and the operating inclined surface is located on the movement path of the locking block.

[0016] By adopting the technical scheme, the distance between the operation slope and the through hole gradually decreases along the pulling direction of the operation strip, and the operation slope is located on the moving path of the locking block, so that the operation strip drives the locking block to move through the operation slope, and the locking block is retreated into the lower shell.

[0017] Optionally, the lower shell is provided with an operation spring, and the operation spring is used to drive the operation strip to be located in the lower shell.

[0018] By adopting the technical scheme, the operation spring drives the operation strip to move, so that the operation strip can be stably located in the lower shell, the possibility that the operation strip is pushed by external factors due to the protrusion of the operation strip out of the lower shell is reduced, and the stability of the operation strip in the lower shell is further increased.

[0019] Optionally, the operation strip is provided with an operation hole, the lower shell is provided with an operation block for inserting into the operation hole, the operation spring is arranged in the operation hole, and the operation spring is arranged on the operation block.

[0020] By adopting the technical scheme, the operation block is inserted into the operation hole, and the operation spring is arranged on the operation block, so that the operation spring is protected by the operation strip, the possibility that the operation spring is damaged is reduced, and the operation spring can stably drive the operation strip to move.

[0021] Optionally, the lower shell is provided with a guide slot, the bottom shell is provided with a guide block for inserting into the guide slot, and when the guide block is inserted into the guide slot, the bottom shell is mounted on the lower shell.

[0022] By adopting the technical scheme, the guide block is inserted into the guide slot, the groove wall of the guide slot guides the guide block, so that the bottom shell can be stably mounted on the lower shell, and the possibility that the bottom shell and the lower shell deviate during mounting is reduced.

[0023] Optionally, the fastener includes a fastening bolt, the bottom shell is provided with a first fastening hole for the fastening bolt to pass through, the lower shell is provided with a second fastening hole for the fastening bolt to pass through, and the fastening bolt is fixed to the lower shell by passing through the first fastening hole and the second fastening hole.

[0024] By adopting the technical scheme, the fastening bolt is inserted into the first fastening hole and the second fastening hole, the lower shell and the bottom shell are fixed to each other, the shaking of the bottom shell in the lower shell is reduced, and the bottom shell can be stably mounted on the lower shell.

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

[0026] 1. The bottom shell is installed in the installation groove through the fastener, and the in-place detection structure is arranged on the bottom shell, so that the in-place detection structure can be pre-assembled, thereby reducing the steps of assembling the upper shell and the lower shell of the circuit breaker, further reducing the time and difficulty of assembling the circuit breaker, and meeting the needs of efficient production and assembly.

[0027] 2. The operator pulls the operation bar, drives the locking block to move, and makes the locking block move smoothly into the lower shell, so that the locking block does not limit the movement of the circuit breaker, thereby enabling the circuit breaker to be smoothly removed from the device; the locking block is driven by the locking spring to protrude from the lower shell, so that the locking block can be inserted into the corresponding locking slot of the device, thereby realizing the mutual fixation of the circuit breaker and the device, avoiding the mistake of external personnel pulling the circuit breaker out of the device, and further increasing the stability of the connection between the circuit breaker and the device. 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 protruding movable contact structure in an embodiment of the present application;

[0030] Figure 3 is a structural schematic diagram of a protruding switch lock structure in an embodiment of the present application;

[0031] Figure 4 is a structural schematic diagram of a containing groove in an embodiment of the present application;

[0032] Figure 5 is Figure 2 is an enlarged schematic diagram of part A in

[0033] Reference signs: 1, upper shell; 2, lower shell; 21, movable contact structure; 211, connecting rod; 22, static contact structure; 23, containing cavity; 24, through hole; 25, containing hole; 26, operation block; 261, operation spring; 27, installation groove; 3, switch lock structure; 31, operation bar; 311, operation plate; 312, operation hole; 313, operation inclined surface; 32, locking block; 321, containing groove; 322, locking inclined surface; 323, sliding inclined surface; 33, locking spring; 4, bottom shell; 41, rotating hole; 42, limiting rod; 43, perforation; 44, fastener; 441, first fastening hole; 442, second fastening hole; 443, third fastening hole; 45, guide block; 451, guide groove; 5, in-place detection structure; 51, rotating handle; 52, limiting block; 521, placing groove; 53, limiting spring. DETAILED DESCRIPTION

[0034] The following will be described in detail in combination with the accompanying Figures 1-5 The present application will be further described in detail.

[0035] The embodiment discloses a modular plug-in circuit breaker. Figure 1 and Figure 2 The modular plug-in circuit breaker comprises an upper shell 1 and a lower shell 2, the lower shell 2 is provided with a movable contact structure 21 and a static contact structure 22, the movable contact structure 21 is connected with a wire, the static contact structure 22 is connected with another wire, and the movable contact structure 21 abuts against the static contact structure 22 to realize the communication of the two wires.

[0036] Referring to Figure 2 and Figure 3 , the lower shell 2 is provided with a containing cavity 23, the containing cavity 23 is provided with a switch lock structure 3, and the switch lock structure 3 is used for limiting the circuit breaker from being pulled out of the equipment. The switch lock structure 3 comprises an operation strip 31, a locking block 32 and a locking spring 33. The lower shell 2 is provided with a through hole 24 communicating with the containing cavity 23, and the through hole 24 is used for the locking block 32 to pass through.

[0037] Referring to Figure 3 and Figure 4 , the surface of the locking block 32 is provided with a containing groove 321, one end of the locking spring 33 is fixedly connected in the containing groove 321, the other end of the locking spring 33 is fixedly connected to the inner wall of the containing cavity 23, and the locking spring 33 drives the locking block 32 to protrude out of the through hole 24. The surface of the locking block 32, which faces the direction in which the circuit breaker is inserted into the equipment, is provided with a locking inclined surface 322, and the distance between the locking inclined surface 322 and the locking spring 33 gradually decreases along the direction in which the circuit breaker is inserted into the equipment. When the circuit breaker is inserted into the equipment, the locking block 32 drives the locking spring 33 to be compressed through the locking inclined surface 322, and the locking block 32 retreats into the containing cavity 23 until the locking spring 33 drives the locking block 32 to be inserted into the corresponding locking groove in the equipment.

[0038] Referring to Figure 3 , the surface of the operation strip 31 is integrally provided with an operation plate 311, and the side surface of the lower shell 2 is provided with a containing hole 25 communicating with the containing cavity 23. The containing hole 25 is used for the operation strip 31 to pass through, the operation plate 311 cannot pass through the containing hole 25, and the operation plate 311 is located on the side of the operation strip 31 away from the containing cavity 23.

[0039] Referring to Figure 3The operation strip 31 is provided with an operation hole 312 extending along the length direction of the operation strip 31. The lower shell 2 is fixedly connected with an operation block 26 which can be inserted into the operation hole 312. The operation block 26 is provided with an operation spring 261 abutting against the hole wall of the operation hole 312 at one end and abutting against the operation block 26 at the other end. When the operation strip 31 is completely located in the accommodating cavity 23, the operation spring 261 is in a non-stressed state; when the operation strip 31 protrudes from the accommodating cavity 23, the operation spring 261 is in a stretched state, and at this time, the operation spring 261 drives the operation strip 31 to move into the accommodating cavity 23.

[0040] With reference to Figure 3 The operation strip 31 is provided with an operation inclined surface 313, and the distance between the operation inclined surface 313 and the through hole 24 gradually increases in the direction from the accommodating hole 25 to the accommodating cavity 23. The locking block 32 is provided with a sliding inclined surface 323, and the distance between the sliding inclined surface 323 and the through hole 24 gradually increases in the direction from the accommodating hole 25 to the accommodating cavity 23. The sliding inclined surface 323 abuts against the operation inclined surface 313, and the moving path of the sliding inclined surface 323 intersects with the moving path of the operation inclined surface 313.

[0041] With reference to Figure 3 When one end of the operation strip 31 is pulled out of the accommodating cavity 23, the operation strip 31 drives the locking block 32 to move through the operation inclined surface 313 and the sliding inclined surface 323, so as to realize the retreat of the locking block 32 into the accommodating cavity 23, thereby unlocking the circuit breaker.

[0042] With reference to Figure 1 And Figure 2 The lower shell 2 is provided with a mounting groove 27 extending through the side surface of the lower shell 2. The lower shell 2 is provided with the bottom shell 4, and the bottom shell 4 is further provided with an in-place detection structure 5 for detecting whether the circuit breaker is installed in place.

[0043] With reference to Figure 3 And Figure 5 The lower shell 2 is provided with a guide groove 451 communicating with the accommodating cavity 23. The bottom shell 4 is fixedly connected with a guide block 45 which is used for being inserted into the guide groove 451. When the guide block 45 is inserted into the guide groove 451, the bottom shell 4 is pre-fixed to the lower shell 2.

[0044] With reference to Figure 5, the in-place detection structure 5 comprises a rotating handle 51, a limiting block 52 and a limiting spring 53, and the rotating handle 51 is rotationally connected to the bottom shell 4. A rotating hole 41 for driving the rotating handle 51 is formed in the surface of the bottom shell 4, and the rotating handle 51 protrudes from the circuit breaker through the rotating hole 41. The movable contact structure 21 is provided with a connecting rod 211, one end of the connecting rod 211 is rotationally connected to the movable contact structure 21, and the other end of the connecting rod 211 is rotationally connected to the rotating handle 51.

[0045] With reference to Figure 5 , the limiting block 52 is slidingly connected to the bottom shell 4, and a placing groove 521 is formed in the surface of the limiting block 52. One end of the limiting spring 53 is fixedly connected to the bottom wall of the placing groove 521, and the other end of the limiting spring 53 is fixedly connected to the bottom shell 4. Two limiting rods 42 are arranged on the bottom shell 4, one limiting rod 42 is fixedly connected to the bottom wall of the placing groove 521, and the other limiting rod 42 is fixedly connected to the bottom shell 4. The two ends of the limiting spring 53 are sleeved on different limiting rods 42, so that the limiting spring 53 is stably located in the placing groove 521.

[0046] With reference to Figure 5 , a through hole 43 is formed in the bottom shell 4 for the limiting block 52 to pass through, and the limiting spring 53 drives the limiting block 52 to be completely located in the bottom shell 4. The limiting block 52 is located on the moving path of the connecting rod 211, that is, the connecting rod 211 drives the limiting block 52 to move.

[0047] With reference to Figure 5 , when the staff rotates the rotating handle 51, the rotating handle 51 drives the limiting block 52 to move through the connecting rod 211, so that the limiting block 52 protrudes from the bottom shell 4. If the limiting block 52 can be inserted into the groove of the equipment, the circuit breaker is installed in place at this time; if the limiting block 52 cannot be inserted into the groove of the equipment, the circuit breaker is not installed in place at this time.

[0048] With reference to Figure 1 , Figure 3 and Figure 5 , the bottom shell 4 is provided with a fastener 44, and the fastener 44 comprises a plurality of fastening bolts. A third fastening hole 443 is formed in the upper shell 1, a second fastening hole 442 is formed in the lower shell 2, and a first fastening hole 441 is formed in the bottom shell 4, and the first fastening hole 441, the second fastening hole 442 and the third fastening hole 443 are all for the fastening bolts to pass through. The fastening bolts pass through the first fastening hole 441, the second fastening hole 442 and the third fastening hole 443, so as to fix the upper shell 1, the lower shell 2 and the bottom shell 4.

[0049] The implementation principle of the modular plug-in circuit breaker is that the staff rotates the rotating handle 51, so that the rotating handle 51 drives the limiting block 52 to move through the connecting rod 211, and the limiting block 52 protrudes from the bottom shell 4, so as to detect whether the circuit breaker is installed in place.

[0050] Unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein and the claims section will be interpreted as being consistent with the intended meaning as set forth herein. For example, "first", "second", "third", and similar terms are used only to distinguish one element from another and are not intended to denote a physical or chronological order or importance of the elements. Also, terms such as "one" or "a" or "an" do not denote a limitation of the number of objects to which it refers, but rather denote the presence of at least one of the referenced object. Terms such as "including" and "having" are intended to be broad and encompass the terms "consisting of" and "consisting essentially of." "Upper", "lower", "left", "right", and other similar terms are used only to denote relative positions for the purpose of illustration and are not intended to denote absolute positions unless otherwise indicated. These relative positions can change when the absolute positions of the described objects are changed.

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

Claims

1. A modular plug-in circuit breaker comprising an upper shell (1) and a lower shell (2) provided with a movable contact structure (21) and a stationary contact structure (22), characterized in that: The lower shell (2) is provided with a mounting groove (27), and the mounting groove (27) is provided with a bottom shell (4), the bottom shell (4) is provided with a fastener (44) for fixing the bottom shell (4), and the bottom shell (4) is provided with a to-position detection structure (5).

2. The modular plug-in circuit breaker of claim 1, wherein: The to-position detection structure (5) comprises a rotating handle (51), a limiting block (52) and a limiting spring (53), the limiting spring (53) is arranged on the bottom shell (4), the bottom shell (4) is provided with a through hole (43) for the limiting block (52) to pass through, and the limiting spring (53) drives the limiting block (52) to be located in the bottom shell (4), and the rotating handle (51) drives the limiting block (52) to be inserted into the corresponding groove of the device.

3. The modular plug-in circuit breaker of claim 2, wherein: The movable contact structure (21) is rotatably connected with a connecting rod (211), the connecting rod (211) is rotatably connected with the rotating handle (51), and the connecting rod (211) is located on the movement path of the limiting block (52).

4. The modular plug-in circuit breaker of claim 1, wherein: The lower shell (2) is provided with a switch lock structure (3), the switch lock structure (3) comprises an operating strip (31), a locking block (32) and a locking spring (33), the operating strip (31) and the locking block (32) are both slidably connected with the lower shell (2), the lower shell (2) is provided with a through hole (24) for the locking block (32) to pass through, the locking spring (33) is arranged on the lower shell (2), the locking spring (33) drives the locking block (32) to protrude from the through hole (24), and the operating strip (31) drives the locking block (32) to move into the lower shell (2); when the operating strip (31) is pulled out, the locking block (32) is completely located in the lower shell (2); when the operating strip (31) is not pulled out, the locking block (32) protrudes from the lower shell (2).

5. The modular plug-in circuit breaker of claim 4, wherein: An operating inclined surface (313) is formed in the operating strip (31), the distance between the operating inclined surface (313) and the through hole (24) gradually decreases along the pulling direction of the operating strip (31), and the operating inclined surface (313) is located on the movement path of the locking block (32).

6. The modular plug-in circuit breaker of claim 4, wherein: An operating spring (261) is arranged on the lower shell (2), and the operating spring (261) is used to drive the operating strip (31) to be located in the lower shell (2).

7. The modular plug-in circuit breaker of claim 6, wherein: An operating hole (312) is formed in the operating strip (31), the lower shell (2) is provided with an operating block (26) for being inserted into the operating hole (312), the operating spring (261) is arranged in the operating hole (312), and the operating spring (261) is arranged on the operating block (26).

8. The modular plug-in circuit breaker of claim 1, wherein: A guide groove (451) is formed in the lower shell (2), the bottom shell (4) is provided with a guide block (45) for being inserted into the guide groove (451), and when the guide block (45) is inserted into the guide groove (451), the bottom shell (4) is mounted on the lower shell (2).

9. The modular plug-in circuit breaker of claim 1, wherein: The fastener (44) comprises a fastening bolt, the bottom shell (4) is provided with a first fastening hole (441) for the fastening bolt to pass through, the lower shell (2) is provided with a second fastening hole (442) for the fastening bolt to pass through, and the fastening bolt is fixed to the lower shell (2) through the first fastening hole (441) and the second fastening hole (442).

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