An electrically powered, fully protected fuse

Abstract

This utility model relates to the field of fuse technology, and in particular to an electrically powered, fully protected fuse, comprising a fuse body with a protective mechanism for safety protection. The protective mechanism includes a rear protective assembly, comprising a rear protective cover located at the lower rear of the fuse body, an extension shell fixed to the upper end of the rear protective cover, mounting openings on both the left and right sides of the front end of the extension shell, a gear rotatably mounted inside the extension shell, guide rods fixed at both the front and rear ends of the extension shell, racks slidably mounted on the guide rods, mounting heads slidably mounted on both the left and right sides of the extension shell, and the mounting heads on both sides being fixed to the corresponding racks, and springs sleeved on the guide rods. This improves the convenience of operation and maintenance, enabling quick assembly and disassembly; at the same time, it effectively enhances the protective capability of the equipment, reliably preventing the intrusion of external foreign objects and accidental electric shock to personnel, thereby comprehensively improving the safety performance and environmental adaptability of the product.

Description

Technical Field

[0001] This utility model relates to the field of fuse technology, specifically to an electrically powered, fully protected fuse. Background Technology

[0002] In the fields of modern power systems and industrial automation, fuses are used as crucial circuit protection components and are widely used in various power distribution equipment, control systems, and electric vehicle infrastructure.

[0003] According to CN222883478U, a horizontal push-type drop-out fuse is disclosed. This technology discloses a technical solution including "an arc-blocking device and a transmission assembly, as well as an insulating support column. The insulating support column serves as a support column and supports the overall structure with the mounting bracket. The upper part of the insulating support column is connected to the arc-blocking device, and the lower part of the insulating support column is connected to the fuse-carrying hook. A current transformer is built into the bottom of the insulating support column and is connected to the insulating support column by connecting bolts. A lower pile head is provided at the bottom of the insulating support column, and a fuse tube is provided on the opposite side of the insulating support column. The upper and lower ends of the fuse tube are respectively provided with an upper fuse tube sleeve and a lower fuse tube sleeve. A mechanical push-pull tube is installed at the middle of the fuse tube. A rotating fuse-carrying hook is installed at one end of the mechanical push-pull tube. The mechanical push-pull tube is fork-shaped, and the other end of the mechanical push-pull tube overlaps with the insulating support column and is bolted to the bracket mounting plate on the transmission assembly."

[0004] In existing technologies, fuse covers are typically fixed with multiple screws. When the equipment is installed in a small distribution cabinet, it is difficult for operators to reach all the fastening points, making the disassembly and assembly process extremely cumbersome. This structure not only makes it difficult to use tools in a narrow space, but also makes disassembly difficult due to insufficient operating space, which seriously affects the efficiency of maintenance work. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an electrically powered, fully protected fuse that improves the convenience of operation and maintenance, enabling quick assembly and disassembly. Simultaneously, it effectively enhances the protective capabilities of the equipment, reliably preventing the intrusion of external foreign objects and accidental electric shock to personnel, thereby comprehensively improving the product's safety performance and environmental adaptability.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an electrically operated fully protected fuse, comprising a fuse body, wherein a protective mechanism is provided on the fuse body for safety protection, the protective mechanism comprising:

[0007] The rear protection assembly includes a rear protective cover located at the lower rear end of the fuse body. An extension shell is fixed to the upper end of the rear protective cover. Assembly ports are provided on both the left and right sides of the front end of the extension shell. A gear is rotatably installed in the middle of the extension shell. Guide rods are fixed at both the front and rear ends of the extension shell. A rack is slidably installed on the guide rods. Mounting heads are slidably installed on both the left and right sides of the extension shell, and the mounting heads on both sides are fixed to the corresponding racks. A spring is sleeved on the guide rod. A knob head is rotatably installed at the upper end of the extension shell and fixed to the gear.

[0008] The front protection assembly includes a front protective cover located at the lower front end of the fuse body. An extension is fixed to the upper end of the front protective cover. Assembly heads are fixed to the left and right sides of the rear end of the extension and cooperate with the assembly port. The assembly head has an installation hole inside and cooperates with the installation head.

[0009] Preferably, the outer end of the mounting head has a beveled structure, and the rear end of the assembly head has a beveled structure.

[0010] Preferably, the gear engages with the front and rear racks in a meshing transmission, and the two racks are arranged symmetrically and staggered.

[0011] Preferably, the inner wall contours of the rear and front protective covers are adapted to the contours of the lower end of the fuse body.

[0012] Preferably, a sealing strip is installed at the junction of the front edge of the rear protective cover and the rear edge of the front protective cover.

[0013] Preferably, the protective mechanism further includes a protective cover rubber installed between the upper inner wall of the rear protective cover and the upper inner wall of the front protective cover.

[0014] Beneficial effects

[0015] This invention provides an electrically operated, fully protected fuse. Compared with the prior art, it has the following advantages:

[0016] 1. When the front and rear protective components need to be removed from the fuse body, rotate the knob counterclockwise. The gears drive the racks on both sides to move in opposite directions along the guide rod, thereby causing the mounting head to retract into the extension housing. This completely disengages the mounting head from the assembly port area and removes it from the mounting hole, thus completely releasing the locking of the assembly head. This removes the connection constraint between the rear and front protective components, allowing them to be freely separated and removed from the fuse body, completing the disassembly process. The protective mechanism provides comprehensive and robust physical protection for the fuse body, effectively preventing the intrusion of external foreign objects and accidental electric shock, thereby improving the overall safety and environmental adaptability of the product.

[0017] 2. When the front protection component and the rear protection component need to be assembled onto the fuse body, during the process of inserting the assembly head of the front protection component into the assembly port of the rear protection component, the inclined surface of the assembly head will first contact the inclined surface of the mounting head. Under the continuous pushing force, the component force generated by the contact of the inclined surfaces will force the mounting head to retract inward and compress the spring, thereby opening the insertion path of the assembly head; when the assembly head continues to advance until its mounting hole is completely aligned with the mounting head, the mounting head will quickly spring into the mounting hole under the return pushing force of the spring to complete the locking; the disassembly and assembly process of the protection mechanism does not require tools, simplifying the daily inspection, replacement and maintenance process of the fuse body. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the rear protection component in this utility model;

[0021] Figure 4 This utility model Figure 3 A schematic diagram of the structure of part A in the middle;

[0022] Figure 5 This is a schematic diagram of the front protection component in this utility model.

[0023] In the diagram: 1. Fuse body; 2. Protective mechanism; 21. Rear protective assembly; 211. Rear protective cover; 212. Extension shell; 213. Assembly port; 214. Gear; 215. Guide rod; 216. Rack; 217. Mounting head; 218. Spring; 219. Knob head; 22. Front protective assembly; 221. Front protective cover; 222. Extension; 223. Assembly head; 224. Mounting hole; 23. Protective cover rubber. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 - Figure 5 This utility model provides a technical solution: an electrically powered fully protected fuse, including a fuse body 1, wherein a protective mechanism 2 is provided on the fuse body 1 for safety protection, and the protective mechanism 2 includes:

[0026] The rear protection assembly 21 includes a rear protective cover 211 located behind the lower end of the fuse body 1. An extension shell 212 is fixed to the upper end of the rear protective cover 211. Assembly ports 213 are opened on both the left and right sides of the front end of the extension shell 212. A gear 214 is rotatably installed in the middle of the extension shell 212. Guide rods 215 are fixed to both the front and rear ends of the extension shell 212. A rack 216 is slidably installed on the guide rods 215. Mounting heads 217 are slidably installed on both the left and right sides of the extension shell 212, and the mounting heads 217 on both sides are fixed to the corresponding racks 216. A spring 218 is sleeved on the guide rods 215. A knob head 219 is rotatably installed on the upper end of the extension shell 212 and fixed to the gear 214.

[0027] The front protection assembly 22 includes a front protective cover 221 disposed in front of the lower end of the fuse body 1. An extension 222 is fixed at the upper end of the front protective cover 221. Assembly heads 223 are fixed on both the left and right sides of the rear end of the extension 222 and cooperate with the assembly port 213. The assembly head 223 has a mounting hole 224 inside and cooperates with the mounting head 217.

[0028] In this embodiment, when the front protective component 22 and the rear protective component 21 need to be removed from the fuse body 1, the knob head 219 is rotated counterclockwise. The gear 214 drives the racks 216 on both sides to move in opposite directions along the guide rod 215, thereby causing the mounting head 217 to retract into the extension shell 212. This allows the mounting head 217 to completely disengage from the area of ​​the assembly port 213 and also exit from the mounting hole 224 of the assembly head 223, thus completely releasing the locking of the assembly head 223. As a result, there is no longer any connection constraint between the rear protective component 21 and the front protective component 22, allowing them to be freely separated and removed from the fuse body 1, completing the entire disassembly process. The protective mechanism 2 provides comprehensive and robust physical protection for the fuse body 1, effectively preventing the intrusion of external foreign objects and accidental electric shock to personnel, thereby improving the overall safety and environmental adaptability of the product.

[0029] Specifically, the outer end of the mounting head 217 has a beveled structure, and the rear end of the assembly head 223 has a beveled structure.

[0030] In this embodiment, when the front protection component 22 and the rear protection component 21 need to be assembled on the fuse body 1, during the process of inserting the assembly head 223 of the front protection component 22 into the assembly port 213 of the rear protection component 21, the inclined surface of the assembly head 223 will first contact the inclined surface of the mounting head 217. Under the continuous pushing force, the component force generated by the contact of the inclined surfaces will force the mounting head 217 to retract inward and compress the spring 218, thereby opening the insertion path of the assembly head 223. When the assembly head 223 continues to advance until its mounting hole 224 is completely aligned with the mounting head 217, the mounting head 217 will quickly spring into the mounting hole 224 under the reset pushing force of the spring 218 to complete the locking. The disassembly and assembly process of the protection mechanism 2 does not require tools, which simplifies the daily inspection, replacement and maintenance process of the fuse body 1.

[0031] Specifically, the gear 214 meshes with the two racks 216, and the two racks 216 are arranged symmetrically and staggered.

[0032] In this embodiment, when the operator rotates the knob head 219, it will drive the gear 214 to rotate synchronously. By utilizing the meshing relationship between the gear 214 and the rack 216, a rotational motion is precisely converted into two racks 216 moving in opposite directions along their respective guide rods 215. Since the two racks 216 are symmetrically staggered, they can synchronously drive the mounting heads 217 on the left and right sides to move towards or away from each other.

[0033] Specifically, the inner wall contours of the rear protective cover 211 and the front protective cover 221 are adapted to the contour of the lower end of the fuse body 1.

[0034] In this embodiment, when the protective mechanism 2 is closed, the rear protective cover 211 and the front protective cover 221 can act like a customized shell, with their inner wall surfaces tightly fitting and wrapping the corresponding surfaces at the lower end of the fuse body 1, thereby achieving effective circumferential limiting; optimizing space utilization, making the whole structure compact, and reducing the additional occupation of installation space.

[0035] Specifically, a sealing strip is installed at the junction of the front edge of the rear protective cover 211 and the rear edge of the front protective cover 221.

[0036] In this embodiment, when the rear protective cover 211 and the front protective cover 221 are closed and locked, the sealing strip pre-installed at the joint is squeezed and undergoes elastic deformation, thereby tightly filling the physical gap generated when the two protective covers are joined.

[0037] Specifically, the protective mechanism 2 also includes a protective cover rubber 23 installed between the upper inner wall of the rear protective cover 211 and the upper inner wall of the front protective cover 221.

[0038] In this embodiment, the protective cover rubber 23 installed between the upper inner wall of the rear protective cover 211 and the upper inner wall of the front protective cover 221 can effectively prevent external contaminants from entering along the upper interface between the fuse body 1 and the protective mechanism 2. It also provides a long-lasting seal through a flexible elastic sealing method without forming a rigid constraint on the fuse body 1, allowing the fuse body 1 to move.

[0039] The working principle and usage process of this utility model are as follows: First, when it is necessary to assemble the front protection component 22 and the rear protection component 21 onto the fuse body 1, the operator only needs to align the assembly head 223 of the front protection component 22 with the assembly port 213 of the rear protection component 21 and apply a pushing force. During the insertion process, the inclined surface of the assembly head 223 will first contact the inclined surface of the mounting head 217. Under the continuous pushing force, the component force generated by the contact of the inclined surfaces will force the mounting head 217 to retract inward and compress the spring 218, thereby opening the insertion path of the assembly head 223. When the assembly head 223 continues to advance until its mounting hole 224 is completely aligned with the mounting head 217, the mounting head 217 will quickly spring into the mounting hole 224 under the return pushing force of the spring 218 to complete the locking. At this time, the protection mechanism 2 provides comprehensive and stable physical protection for the fuse body 1.

[0040] When it is necessary to remove the protective mechanism 2 from the fuse body 1, rotate the knob head 219 counterclockwise. The gear 214 drives the racks 216 on both sides to move in opposite directions along the guide rod 215, thereby causing the mounting head 217 to retract into the extension shell 212. This allows the mounting head 217 to completely disengage from the area of ​​the assembly port 213 and also exit from the mounting hole 224 of the assembly head 223. This completely releases the locking of the assembly head 223, so that there is no longer any connection constraint between the rear protective component 21 and the front protective component 22. The two can be freely separated and then removed from the fuse body 1, completing the entire disassembly process.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electrically powered, fully protected fuse, comprising a fuse body (1), characterized in that: The fuse body (1) is provided with a protective mechanism (2) for safety protection. The protective mechanism (2) includes: The rear protection assembly (21) includes a rear protective cover (211) located at the lower rear end of the fuse body (1). An extension shell (212) is fixed to the upper end of the rear protective cover (211). Assembly ports (213) are opened on both the left and right sides of the front end of the extension shell (212). A gear (214) is rotatably installed in the middle of the extension shell (212). Guide rods (215) are fixed at both the front and rear ends of the extension shell (212). A rack (216) is slidably installed on the guide rod (215). Mounting heads (217) are slidably installed on both the left and right sides of the extension shell (212). The mounting heads (217) on both sides are fixed to the corresponding racks (216). A spring (218) is sleeved on the guide rod (215). A knob head (219) is rotatably installed on the upper end of the extension shell (212) and fixed to the gear (214). The front protection assembly (22) includes a front protective cover (221) located in front of the lower end of the fuse body (1). An extension (222) is fixed at the upper end of the front protective cover (221). An assembly head (223) is fixed on both the left and right sides of the rear end of the extension (222) and cooperates with the assembly port (213). An installation hole (224) is opened inside the assembly head (223) and cooperates with the installation head (217).

2. The electrically powered fully protected fuse according to claim 1, characterized in that: The outer end of the mounting head (217) has a beveled structure, and the rear end of the assembly head (223) has a beveled structure.

3. The electrically powered fully protected fuse according to claim 1, characterized in that: The gear (214) meshes with the two racks (216) in front and behind, and the two racks (216) are arranged symmetrically and staggered.

4. The electrically powered fully protected fuse according to claim 1, characterized in that: The inner wall contours of the rear protective cover (211) and the front protective cover (221) are adapted to the contour of the lower end of the fuse body (1).

5. The electrically powered fully protected fuse according to claim 1, characterized in that: A sealing strip is installed at the junction of the front edge of the rear protective cover (211) and the rear edge of the front protective cover (221).

6. The electrically powered fully protected fuse according to claim 1, characterized in that: The protective mechanism (2) also includes a protective cover rubber (23) installed between the upper inner wall of the rear protective cover (211) and the upper inner wall of the front protective cover (221).

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