A fuse core indicator light

Abstract

The present invention relates to the technical field of low-voltage electrical appliances, and specifically to a fuse core indicator light, comprising: a fuse body, a terminal for connecting an external wire is provided on the upper front portion of the fuse body, an operating member for controlling the opening and closing of internal contacts of the fuse is provided on the lower front portion of the fuse body, and an indicator for indicating whether the fuse core is damaged is provided between the terminal and the operating member. When assembling the light guide column of the present invention, the assembly is performed on the outside of the fuse body, which is convenient for the user. When disassembling, common tools can be used to operate on the side. At the same time, a disassembly groove is provided at the side of the fuse body and the place where the light guide column cooperates. The fuse cannot be disassembled after being installed in the cabinet, thereby ensuring safety.

Description

Technical Field

[0001] The invention relates to the technical field of low-voltage electrical appliances, in particular to a fuse core indicator light of a fuse. Background Art

[0002] A fuse is an electrical device that generates heat to melt its fuse element, disconnecting the circuit when the current exceeds a specified value. A fuse is a current protector that uses the principle that, after the current exceeds a specified value for a period of time, the heat generated by the fuse element melts, thereby disconnecting the circuit. Fuses are widely used in high and low voltage power distribution and control systems, as well as in electrical equipment. As a short-circuit and overcurrent protector, they are one of the most commonly used protective devices.

[0003] During the use of existing long strip fuses, it is necessary to inspect the fuses before knowing whether the fuse core is damaged, which makes it difficult for maintenance personnel to replace them in time. Therefore, we propose a fuse core indicator light to effectively solve the above disadvantages. Summary of the Invention

[0004] The object of the present invention is to provide a fuse core indicator light for a fuse to solve the problems raised in the above background technology.

[0005] The above-mentioned object of the present invention is achieved through the following technical solutions:

[0006] A fuse core indicator light comprises: a fuse body, a connection terminal for connecting an external wire is provided on the upper front portion of the fuse body, an operating member for controlling the opening and closing of internal contacts of the fuse is provided on the lower front portion of the fuse body, and an indicator for indicating whether the fuse core is damaged is provided between the connection terminal and the operating member.

[0007] Furthermore, the indicator includes an indicator light installed in the fuse body and a light guide column connected to the fuse body in a detachable manner.

[0008] Furthermore, the indicator light is a light emitting diode, and the indicator light is connected in parallel with the fuse core inside the fuse body through a wire.

[0009] Furthermore, a disassembly groove is provided at the place where the side surface of the fuse body and the light guide column cooperate with each other, and the light guide column is detachably connected to the fuse body through the disassembly groove.

[0010] Furthermore, the light guide column is L-shaped and is made of transparent plastic material.

[0011] Furthermore, a stepped limiting boss is integrally formed at one end of the light guide column close to the indicator light, and the light guide column limits and fixes one end of the indicator light through the limiting boss.

[0012] Compared with the prior art, the present invention provides a fuse core indicator light, which has the following beneficial effects:

[0013] 1. The present invention assembles the light guide outside the fuse body, making assembly convenient for the user. Disassembly can be performed from the side using common tools. Furthermore, a disassembly slot is provided on the side of the fuse body where the light guide meets the fuse body. Once installed in the cabinet, the fuse cannot be disassembled, ensuring safety.

[0014] 2. In the present invention, when the fuse core is normally intact, no current flows through the indicator light circuit, so it does not light up. When the fuse core is damaged, the contacts of the fuse are still in a closed state. At this time, current will flow through the indicator light circuit, and the indicator light will light up to indicate. The indicator light guides the light source out of the housing through the light guide column to notify the maintenance personnel to replace it. The light guide column and the limiting boss are used to limit the indicator light, so that the assembled light guide column and the indicator light are in closer contact, making the light transmission of the indicator light more effective and the indication effect more obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the overall structure of the fuse of the present invention;

[0016] Figure 2 Schematic diagram of the internal structure of the fuse of the present invention;

[0017] Figure 3 It is a schematic diagram of the side structure of the fuse of the present invention;

[0018] Figure 4 This is a schematic diagram of the installation direction structure of the light guide column of the present invention;

[0019] Figure 5 It is a schematic diagram of the enlarged structure of the indicator of the present invention.

[0020] In the figure: fuse body (1), indicator (2), light guide column (201), indicator light (202), disassembly slot (3), limiting boss (4), connection terminal (5), operating member (6). DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example: See Figures 1 to 5The present invention provides a technical solution: a fuse core indicator light, comprising: a fuse body 1, a terminal 5 for connecting an external wire is provided on the upper front portion of the fuse body 1, an operating member 6 for controlling the opening and closing of internal contacts of the fuse is provided on the lower front portion of the fuse body 1, and an indicator 2 for indicating whether the fuse core is damaged is provided between the terminal 5 and the operating member 6.

[0023] The indicator 2 includes an indicator light 202 installed in the fuse body 1 and a light guide column 201 connected to the fuse body 1 in a detachable manner. A disassembly groove 3 is provided at the side of the fuse body 1 where the light guide column 201 matches. The light guide column 201 is detachably connected to the fuse body 1 through the disassembly groove 3. When assembling the light guide column 201, it is assembled outside the fuse body (1). It is convenient for the user to assemble. When disassembling, common tools can be used to operate on the side. At the same time, the disassembly groove 3 is provided at the side of the fuse body 1 where the light guide column 201 matches. After the fuse is installed in the cabinet, it cannot be disassembled, ensuring safety.

[0024] Among them, the indicator light 202 is a light emitting diode, and the indicator light 202 is connected to the fuse core inside the fuse body 1 in parallel through a wire. The light guide column 201 is L-shaped, and the light guide column 201 is made of transparent plastic material. The light guide column 201 is integrally formed with a stepped limiting boss 4 at one end near the indicator light 202. The light guide column 201 limits and fixes one end of the indicator light 202 through the limiting boss 4. When the fuse core is normally not damaged, no current flows through the indicator light 202 circuit, so it does not light up. When the fuse core is damaged, the contacts of the fuse are still in a closed state. At this time, current will flow through the indicator light 202 circuit, and the indicator light 202 will light up to indicate. The indicator light 202 guides the light source out of the shell through the light guide column 201 to notify the maintenance personnel to replace it. The light guide column 201 and the limiting boss 4 are used to limit the indicator light 202, so that the assembled light guide column 201 and the indicator light 202 are in closer contact, making the light transmission of the indicator light 202 more effective and the indication effect more obvious.

[0025] Working principle: During the use of the present invention, when the normal fuse core is not damaged, no current flows through the indicator light 202 circuit, so it does not light up. When the fuse core is damaged, the contacts of the fuse are still in a closed state. At this time, current will flow through the indicator light 202 circuit, and the indicator light 202 will light up to indicate. The indicator light 202 guides the light source out of the shell through the light guide column 201 to notify the maintenance personnel to replace it. The light guide column 201 and the limiting boss 4 are used to limit the indicator light 202, so that the assembled light guide column 201 and the indicator light 202 are in closer contact, making the light transmission of the indicator light 202 more effective and the indication effect more obvious. When assembling the light guide column 201, it is assembled outside the fuse body (1), which is convenient for the user. When disassembling, it can be operated on the side using common tools. At the same time, the disassembly slot 3 is opened at the side of the fuse body 1 and the place where the light guide column 201 cooperates. The fuse cannot be disassembled after being installed in the cabinet, ensuring safety.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0027] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fuse core indicator light, comprising: A fuse body (1), characterized in that: a terminal (5) for connecting an external wire is provided on the upper front portion of the fuse body (1); an operating member (6) for controlling the opening and closing of internal contacts of the fuse is provided on the lower front portion of the fuse body (1); and an indicator (2) for indicating whether the fuse core is damaged is provided between the terminal (5) and the operating member (6); The indicator (2) comprises an indicator light (202) installed in the fuse body (1) and a light guide column (201) detachably connected to the fuse body (1); The indicator light (202) is a light emitting diode, and the indicator light (202) is connected in parallel with the fuse core inside the fuse body (1) via a wire; A disassembly groove (3) is provided at the location where the side of the fuse body (1) and the light guide column (201) meet, and the light guide column (201) is detachably connected to the fuse body (1) through the disassembly groove (3). The light guide column is assembled outside the fuse body, and can be disassembled from the side. The operating member (6) is a rotary handle, the axis of which is parallel to the front face of the fuse body.

2. The fuse core indicator light of a fuse according to claim 1, characterized in that: The light guide column (201) is L-shaped and is made of a transparent plastic material.

3. The fuse core indicator light of a fuse according to claim 1, characterized in that: One end of the light guide column (201) close to the indicator light (202) is integrally formed with a stepped limiting boss (4), and the light guide column (201) limits and fixes one end of the indicator light (202) via the limiting boss (4).

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