Fuse assembly of power distribution cabinet

Abstract

The utility model belongs to the technical field of fuses, and particularly relates to a power distribution cabinet fuse assembly which comprises a circuit breaker shell, a fuse column and an installation frame, an installation sliding groove is arranged on the rear side of the circuit breaker shell, the installation frame is installed in the installation groove of the circuit breaker shell in a sliding mode, and the fuse column is vertically installed in the installation frame. Wire butt joint grooves are formed in the upper portion and the lower portion of the circuit breaker shell, the ends of the connecting pieces are fixedly connected with wires through locking screws, a fixing bolt and a spring are arranged at the rear end of the installation frame, and the installation frame can be automatically ejected out through the elastic force of the spring so that the fuse column can be replaced conveniently. A rotating shaft and a limiting rod are rotationally installed on the front side of the circuit breaker shell, the installation frame is limited or released by rotating the limiting rod, the assembly is simple in structure and convenient to operate, and the problems that in the prior art, a fuse is complex in replacement operation and poor in contact, and the installation frame is unstable can be effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fuse, specifically relates to a power distribution cabinet fuse assembly. BACKGROUND

[0002] As an important equipment in power supply system, power distribution cabinet is used for centralized installation of circuit breaker, fuse and other electrical components to realize power distribution and protection function. Among them, fuse as an overload protection device can be fused when current is too large, thereby cutting off the circuit to protect the safety of power system and its equipment. However, in the prior art, the installation and replacement of fuse in power distribution cabinet still have the following technical problems:

[0003] 1. Inconvenient installation and replacement operation

[0004] The existing fuse assembly usually adopts fixed design, and when the fuse is replaced, a plurality of parts need to be loosened or disassembled using tools, which leads to complex operation and time consumption. At the same time, during the replacement process, the installation angle of the fuse may deviate, which affects the contact quality with the conductive sheet, and further may cause the functional failure of the fuse.

[0005] 2. Lack of limiting structure, affecting safety

[0006] During the replacement of the fuse, due to the lack of reliable limiting device, the fuse may move due to external interference, which leads to inaccurate installation. In addition, the design of not limiting the replacement direction may cause misinstallation of the fuse, further reducing the safety and reliability of the system. UTILITY MODEL CONTENTS

[0007] In view of the problems in the prior art, the utility model aims to provide a power distribution cabinet fuse assembly, which realizes quick replacement, reliable limiting and stable installation of the fuse through improved installation frame design, limiting structure and conductive connection mode, thereby effectively solving the deficiencies in the prior art and improving the safety and maintenance efficiency of the power distribution cabinet operation.

[0008] To achieve the above purpose, the utility model provides the following technical scheme:

[0009] The utility model provides a power distribution cabinet fuse assembly, including circuit breaker housing and fuse column, the rear side of circuit breaker housing is equipped with the installation sliding slot, the installation sliding slot is slidably installed on the power distribution cabinet installation rail, the inside of circuit breaker housing is hollow, the front side surface of circuit breaker housing is equipped with the installation slot, the installation slot slidably installs the installation frame, the installation frame is flush with circuit breaker housing front surface, the installation frame is rectangular frame, the fuse column is vertically installed in the inside of installation frame, the upper and lower surfaces of installation frame are all equipped with the electrically -conductive elastic sheet, the side surface of two electrically -conductive elastic sheets is in contact with the both ends of fuse column respectively, the inside of circuit breaker housing is installed with the connecting piece respectively, and the side of two electrically -conductive elastic sheets is in contact with two connecting pieces respectively.

[0010] Further, the circuit breaker housing is provided with a wire docking groove on the upper and lower sides, and the connecting piece is disposed in the wire docking groove.

[0011] Further, the circuit breaker housing is provided with a wire docking groove on the upper and lower sides, and the connecting piece is disposed in the wire docking groove.

[0012] Further, the installation frame is provided with a baffle on one side, and the baffle is used to limit the side of the fuse column.

[0013] Further, the installation frame is provided with a baffle on one side, and the baffle is used to limit the side of the fuse column.

[0014] Further, the circuit breaker housing is provided with a wire docking groove on the upper and lower sides, and the connecting piece is disposed in the wire docking groove.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The power distribution cabinet fuse assembly has the hollow design of the circuit breaker housing and the installation sliding slot, so that the circuit breaker housing can be conveniently and slidably installed on the installation rail of the power distribution cabinet, the fuse assembly can be quickly installed and disassembled, the structural design of the installation sliding slot enhances the stability of the device, avoids the problem of sliding off caused by vibration or external force, and improves the safety and reliability of the device.

[0017] By creating a mounting slot on the front side of the circuit breaker housing and sliding a rectangular mounting frame within the slot, the fuse element can be vertically installed inside the mounting frame. This design ensures both the installation accuracy of the fuse element and improves operational convenience. In particular, when replacing the fuse element, the mounting frame can pop out under the action of a spring, significantly simplifying the fuse element replacement process. At the same time, when replacing the fuse element, the mounting frame moves to the outside, allowing direct observation of the fuse element's installation status, ensuring installation accuracy, and avoiding poor contact problems caused by installation angle deviations during traditional fuse replacement.

[0018] The conductive elastic sheets on the upper and lower surfaces of the mounting frame contact both ends of the fusion pillar, while the other side of the conductive elastic sheet contacts the connecting piece, forming a reliable conductive connection. This design utilizes the elastic contact characteristics of the conductive elastic sheet to effectively avoid the contact loosening problem caused by thermal expansion and contraction or vibration in traditional fixed contact methods, thereby improving the connection reliability and operational stability of the circuit.

[0019] The baffle installed on one side of the mounting frame limits one side of the molten column during installation, ensuring that the molten column can only be replaced from a specific direction. This design effectively avoids misinstallation during operation and ensures the stability of the molten column after installation, thereby improving the overall safety and ease of maintenance of the device.

[0020] The mounting frame is secured by a bolt and spring at the rear end, which allows the frame to pop out automatically under the action of the spring. At the same time, the compression of the spring stores energy, allowing the frame to return smoothly and remain flush with the front surface of the circuit breaker housing. This design greatly improves the efficiency of fuse replacement and avoids the problem of unstable frame return in traditional devices.

[0021] Through the cooperation of the rotating shaft and the limiting rod, the rotation of the rotating shaft can limit or release the mounting frame by the limiting rod; the structure design is simple and reliable, ensuring the stability of the mounting frame, while facilitating the fixing and disassembly of the mounting frame; the rotating convex strip on the surface of the rotating shaft further optimizes the ease of operation and adapts to the needs of different usage scenarios. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the mounting frame of this utility model after it has been pulled out.

[0024] Figure 3 For the present utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0025] Figure 4 For the present utility model Figure 3schematic diagram of the front view structure of the utility model;

[0026] Figure 5 is the schematic diagram of the installation frame and the fuse column installation structure of the utility model.

[0027] In the drawings, the component list represented by each reference numeral is as follows:

[0028] 1, circuit breaker shell; 11, installation sliding groove; 12, connecting piece; 13, locking screw; 14, installation slot; 2, installation frame; 21, conductive elastic sheet; 22, fixing bolt; 23, spring; 24, baffle; 3, fuse column; 4, rotating shaft; 41, limiting rod; 42, rotating convex strip. DETAILED DESCRIPTION

[0029] In order to make the purpose and advantages of the utility model more clear and apparent, the utility model is specifically described below in combination with examples. It should be understood that the following text is only used to describe one or several specific implementation manners of the utility model, and does not strictly limit the specific protection scope requested by the utility model.

[0030] Reference Figures 1-5 As shown in the figure, a power distribution cabinet fuse assembly, including circuit breaker shell 1 and fuse column 3, circuit breaker shell 1 rear side is provided with installation sliding groove 11, installation sliding groove 11 is slidably installed on the power distribution cabinet installation rail, facilitating the quick installation and disassembly of circuit breaker shell 1; the inside of circuit breaker shell 1 is hollow, forming an installation space for accommodating internal elements; the front surface of circuit breaker shell 1 is provided with installation slot 14, installation slot 14 is slidably installed with installation frame 2, installation frame 2 can realize stable sliding through installation slot 14, ensuring that no jam occurs during the replacement of fuse column 3; installation frame 2 is flush with the front surface of circuit breaker shell 1, which is conducive to the overall appearance and space utilization of the structure; installation frame 2 is a rectangular frame, and its stable structure facilitates the vertical installation and fixation of fuse column 3; fuse column 3 is vertically installed inside installation frame 2, avoiding poor contact caused by inclination during installation; the upper and lower surfaces of installation frame 2 are both provided with conductive elastic sheet 21, the side surfaces of the two conductive elastic sheets 21 close to each other are respectively in contact with the two ends of fuse column 3, ensuring the conduction of the circuit and the stability of fuse column 3; the inside of circuit breaker shell 1 is provided with connecting piece 13 above, the side surfaces of the two conductive elastic sheets 21 close to each other are respectively in contact with the two connecting pieces 13, forming a complete circuit connection, ensuring the normal work of fuse column 3.

[0031] Reference Figures 1-4 As shown in the figure, wire butt joint grooves are provided on the upper and lower surfaces of circuit breaker shell 1, and the size of the wire butt joint grooves is adapted to facilitate the introduction and connection of the wires; the outer side of connecting piece 13 is placed in the wire butt joint groove, and reliable contact between the wires and connecting piece 13 is realized through the fixing structure, reducing circuit failure caused by looseness.

[0032] ReferenceFigure 1 and Figure 3 As shown, locking screws 12 are screwed onto both the upper and lower sides of the front surface of the circuit breaker housing 1. The locking screws 12 correspond to the ends of the connecting pieces 13. The locking screws 12 press and fix the connecting wires to the ends of the connecting pieces 13 through the screwing operation, which not only improves the reliability of the wire connection, but also facilitates installation and disassembly. The locking screws 12 are reasonably designed to avoid electrical faults caused by loose wires and improve the overall safety performance of the device.

[0033] refer to Figures 3-5 As shown, a baffle 24 is provided on one side of the mounting frame 2. The baffle 24 is used to limit the position of the molten column 3 on one side to prevent the molten column 3 from shifting due to vibration or external force during use. The baffle 24 has a compact structure, which not only ensures the installation accuracy of the molten column 3, but also makes it easy for operators to replace the molten column 3 from the other side.

[0034] refer to Figure 4 and Figure 5 As shown, a fixing bolt 22 is symmetrically arranged on the rear end face of the mounting frame 2, and a spring 23 is installed on the surface of the fixing bolt 22. The spring 23 extends beyond the rear end face of the fixing bolt 22. The rear end of the spring 23 abuts against the inner wall of the rear side of the circuit breaker housing 1. The elastic action of the spring 23 realizes the automatic pop-out function of the mounting frame 2, which facilitates the replacement of the fuse column 3. At the same time, the compression and energy storage of the spring 23 realizes the return and stabilization of the mounting frame 2.

[0035] refer to Figure 1 and Figure 2 As shown, a rotating shaft 4 is rotatably mounted on the front side of the circuit breaker housing 1. A rotating ridge 42 is provided on the surface of the rotating shaft 4. The rotation direction of the rotating shaft 4 is controlled by the cooperation of the rotating ridge 42. A limit rod 41 is provided at the bottom of the rotating shaft 4, which is positioned on the front side of the mounting frame 2. The rotation of the rotating shaft 4 causes the limit rod 41 to be limited or released from the mounting frame 2, effectively ensuring the stability and safety of the mounting frame 2 during use, while also facilitating the fixing and operation of the frame.

[0036] The working principle of this utility model is as follows: First, the circuit breaker housing 1 is installed on the installation rail of the distribution cabinet through the installation slide 11. Then, the live wire is connected to the end of the connecting piece 13 and the connecting wire is locked and fixed by the locking screw 12. The rotating shaft 4 is rotated so that the limiting rod 41 is in a horizontal state, and then the front side of the mounting frame 2 is free of obstacles. At this time, due to the energy stored in the spring 23, the mounting frame 2 can be popped out so that the fuse column 3 is exposed, making it easy to remove the fuse column 3 for replacement. The baffle 24 can limit one side of the fuse column 3 during installation, so that the fuse column 3 can only be replaced from one side and ensure that the fuse column 3 is vertical inside the mounting frame 2.

[0037] After the replacement of the fusing column 3 is completed, the two ends of the fusing column 3 are in contact with the conductive elastic sheet 21, then the inner push installation frame 2 is installed, so that the front end of the installation frame 2 is flush with the front surface of the circuit breaker shell 1, at this time, the end of the conductive elastic sheet 21 is in contact with the connecting sheet 13, electricity is realized, the spring 23 is extruded and stored in force in this process, the rotating shaft 4 is rotated, so that the limiting rod 41 limits the installation frame 2 downward, so as to ensure the stability of the installation frame 2.

[0038] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application, if not specially described and limited, are implemented according to the conventional means in the art.

Claims

1. An electrical distribution cabinet fuse assembly comprising a circuit breaker housing (1) and a fusible link (3), characterised in that: The circuit breaker shell (1) rear side is provided with a mounting sliding groove (11), the mounting sliding groove (11) is slidably mounted on the switch board mounting rail, the circuit breaker shell (1) is hollow, the circuit breaker shell (1) front side surface is provided with a mounting groove (14), the mounting groove (14) is slidably mounted with a mounting frame (2), the mounting frame (2) is flush with the front surface of the circuit breaker shell (1), the mounting frame (2) is a rectangular frame, the fuse column (3) is vertically installed in the mounting frame (2), the mounting frame (2) upper and lower surfaces are provided with conductive elastic sheets (21), the two conductive elastic sheets (21) are respectively in contact with the two ends of the fuse column (3), the circuit breaker shell (1) is provided with a connecting sheet (13) above, and the two conductive elastic sheets (21) are respectively in contact with the two connecting sheets (13).

2. An electrical panel fuse assembly according to claim 1, wherein: The circuit breaker shell (1) is provided with a wire butt joint groove on the upper and lower surfaces, and the connecting sheet (13) is arranged in the wire butt joint groove.

3. An electrical panel fuse assembly according to claim 2 wherein: The circuit breaker shell (1) front side surface is provided with a locking screw (12) on the upper and lower surfaces, the locking screw (12) corresponds to the end of the connecting sheet (13), and the locking screw (12) extrudes and fixes the connecting wire on the end of the connecting sheet (13).

4. An electrical panel fuse assembly according to claim 1, wherein: The mounting frame (2) is provided with a baffle (24) on one side, and the baffle (24) is used for limiting one side of the fuse column (3).

5. An electrical panel fuse assembly according to claim 4 wherein: The mounting frame (2) rear end face is provided with a fixed bolt (22), the fixed bolt (22) surface is provided with a spring (23), the spring (23) exceeds the rear end face of the fixed bolt (22), and the rear end of the spring (23) is in abutment with the rear side inner wall of the circuit breaker shell (1).

6. An electrical panel fuse assembly according to claim 5 wherein: The circuit breaker shell (1) front side is rotatably provided with a rotating shaft (4), the rotating shaft (4) surface is provided with a rotating convex strip (42), the rotating shaft (4) bottom is provided with a limiting rod (41), and the limiting rod (41) is arranged on the front side of the mounting frame (2).

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