Fuse for power distribution protection

Abstract

The utility model relates to the technical field of fuses, and discloses a fuse for power distribution protection, comprising a housing, two ends of the outer part of the housing are provided with terminals; the top plates are arranged on the two sides of the upper end of the outer portion of the shell, inner plates are arranged at the lower ends of the top plates, reset springs are installed between the inner plates and the top plates, pointed bolts are installed in the inner plates, the pointed bolts are connected with the inner plates through threads in a matched mode, and the pointed bolts penetrate through and extend to the lower ends of the inner plates. According to the utility model, the reset spring structure is matched with the pointed-end bolt, so that the connection between the copper nose and the fuse is convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuse technology field, concretely is a fuse for distribution protection. BACKGROUND

[0002] The fuse for distribution protection is a safety device used in circuits to protect equipment from overload and short-circuit damage. Its working principle is based on the fact that when the current exceeds the specified value, the fuse inside the fuse melts due to its own heat, thereby rapidly cutting off the circuit to prevent the expansion of faults and potential safety risks. Fuses are simple, low-cost, and do not require external power to work, making them common protection components in low-voltage distribution systems.

[0003] Common fuses use a copper nose on one end of the wire when connecting to the wire. The bolt and nut at the end of the fuse are unscrewed, then the copper nose is passed through and tightened. During the above operation, if the bolt or nut falls off, it will affect work efficiency. Therefore, a fuse for distribution protection is proposed. SUMMARY

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a fuse for distribution protection to solve the problems raised in the above background.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a fuse for distribution protection, comprising:

[0008] A housing is provided with terminals at both ends of the outside.

[0009] A top plate is provided on both sides of the upper end of the outside of the housing. The lower end of the top plate is provided with an inner plate. A return spring is installed between the inner plate and the top plate. A sharp bolt is installed inside the inner plate. The sharp bolt is connected to the inner plate through thread cooperation. The sharp bolt extends through and extends to the lower end of the inner plate.

[0010] Preferably, the top plate and the housing are connected by screws. The upper and lower ends of the return spring are connected to the top plate and the inner plate, respectively. The return spring enables the inner plate to have automatic reset property.

[0011] Preferably, the inside of the terminal is provided with a screw hole, and the sharp bolt is connected to the screw hole through thread cooperation.

[0012] Preferably, the side of the lower end of the top plate inside the return spring is provided with a sliding rod, and the sliding rod is connected to the top plate.

[0013] Preferably, the inner plate is in sliding connection with a slide rod, the slide rod penetrates and extends to the lower end of the inner plate, and the slide rod is used to limit the movement track of the inner plate.

[0014] Preferably, a fixed nut is arranged at the lower end of the inner plate outside the pointed bolt, and the fixed nut is in threaded connection with the pointed bolt, and the fixed nut is used to move up and down to facilitate the fixed nut to press the copper nose of the electric wire.

[0015] (Three) beneficial effects

[0016] Compared with the prior art, the fuse provided by the utility model has the following advantages

[0017] Beneficial effects:

[0018] The utility model discloses a reset spring is used to reset the inner plate, cooperates the lift of pointed bolt and the pointed structure of the lower end of pointed bolt, makes the copper nose of electric wire push and make it reset after the pointed bolt is lifted, and then makes the pointed bolt insert the fixed hole of copper nose, and then tightens pointed bolt and can press the fixed copper nose, and in this way, the connection of electric wire and fuse is convenient and fast, prevents the drop of connecting piece, and solves the problem in the background art. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall structure front view of the utility model;

[0020] Figure 2 It is the top plate and inner plate structure section view of the utility model;

[0021] Figure 3 It is the overall structure bottom view of the utility model.

[0022] In the drawing: 1, shell;2, terminal;3, screw hole;4, top plate;5, slide rod;6, reset spring;7, inner plate;8, pointed bolt;9, fixed nut. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] The utility model provides a technical scheme, a fuse for power distribution protection, please refer to Figure 1 、 Figure 2 And Figure 3 , comprising:

[0025] The shell 1, both ends of the shell 1 outside are provided with terminals 2;

[0026] The top plate 4 is arranged on both sides of the upper end of the shell 1 outside, the lower end of the top plate 4 is provided with an inner plate 7, a reset spring 6 is arranged between the inner plate 7 and the top plate 4, a pointed bolt 8 is arranged inside the inner plate 7, and the pointed bolt 8 is connected with the inner plate 7 through thread cooperation, and the pointed bolt 8 penetrates and extends to the lower end of the inner plate 7.

[0027] Please refer to Figure 1 and Figure 2 , the top plate 4 is connected with the shell 1 through screws, the upper and lower ends of the reset spring 6 are connected with the top plate 4 and the inner plate 7 respectively, and the reset spring 6 makes the inner plate 7 have automatic reset property.

[0028] Please refer to Figure 1 and Figure 3 , the inside of the terminal 2 is provided with a screw hole 3, and the pointed bolt 8 is connected with the screw hole 3 through thread cooperation.

[0029] Please refer to Figure 2 , one side of the lower end of the top plate 4 inside the reset spring 6 is provided with a sliding rod 5, and the sliding rod 5 is connected with the top plate 4.

[0030] Please refer to Figure 2 , the inner plate 7 is slidingly connected with the sliding rod 5, the sliding rod 5 penetrates and extends to the lower end of the inner plate 7, and the sliding rod 5 is used for limiting the movement track of the inner plate 7.

[0031] Please refer to Figure 2 , the outside of the pointed bolt 8 at the lower end of the inner plate 7 is provided with a fixed nut 9, and the fixed nut 9 is connected with the pointed bolt 8 through thread cooperation, and the fixed nut 9 is used for lifting movement to facilitate auxiliary fixing of the copper nose of the wire.

[0032] The scheme: use tools to rotate the pointed bolt 8 to make it convert the rotary motion of the pointed bolt 8 into linear motion under thread cooperation with the inner plate 7, so that the pointed bolt 8 is lifted, the lower end of the pointed bolt 8 is lifted to a height separated from the inner plate 7, then the copper nose of one end of the wire is pushed to the upper end of the terminal 2 towards the lower end of the pointed bolt 8, the collision of the copper nose with the lower end of the pointed bolt 8 makes the pointed bolt 8 be lifted, when the fixed hole of the copper nose moves to the lower end of the pointed bolt 8, under the reset of the reset spring 6, the inner plate 7 is pushed, and then the pointed bolt 8 is driven to pass through the fixed hole to limit the copper nose, and then the pointed bolt 8 is rotated to press and fix the copper nose.

[0033] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0034] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A fuse for power distribution protection, characterized by, Include: The shell (1), both ends of the shell (1) are provided with terminals (2); Top plate (4) is arranged on both sides of the outer top of the shell (1), the lower end of the top plate (4) is provided with an inner plate (7), a reset spring (6) is installed between the inner plate (7) and the top plate (4), a pointed bolt (8) is installed inside the inner plate (7), and the pointed bolt (8) is connected with the inner plate (7) through thread cooperation, and the pointed bolt (8) penetrates and extends to the lower end of the inner plate (7).

2. A fuse for power distribution protection according to claim 1, characterized in that: The top plate (4) is connected with the shell (1) through screw, and the upper and lower ends of the reset spring (6) are connected with the top plate (4) and the inner plate (7) respectively.

3. A fuse for power distribution protection according to claim 1, characterized in that: The inside of the terminal (2) is provided with a screw hole (3), and the pointed bolt (8) is connected with the screw hole (3) through thread cooperation.

4. The fuse for power distribution protection according to claim 1, characterized by: The lower end of the top plate (4) is provided with a slide rod (5) on one side inside the reset spring (6), and the slide rod (5) is connected with the top plate (4).

5. A fuse for power distribution protection according to claim 4, characterized in that: The inner plate (7) is connected with the slide rod (5) slidingly, and the slide rod (5) penetrates and extends to the lower end of the inner plate (7).

6. The fuse for power distribution protection according to claim 1, wherein: The lower end of the inner plate (7) is provided with a fixed nut (9) outside the pointed bolt (8), and the fixed nut (9) is connected with the pointed bolt (8) through thread cooperation.

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