Electric control fuse

Abstract

The utility model discloses an electric control fuse, which comprises a shell, the inner wall of the shell is provided with a chute, the inside of the chute is movably connected with a movable frame, the top of the movable frame is movably connected with a bolt through a rolling shaft, and the bolt is in threaded connection with the shell. The clamping blocks are adopted to clamp the wire, the phenomenon that the wire is separated from the shell due to the fact that the wire is subjected to external force, and then the wire is loosened can be prevented, the device is different from a traditional mode of fixing the inner core of the wire, the traditional mode is that the inner core of the wire is directly pressed by the bolt, and the bolt exerts rotating force on the inner core of the wire when the bolt is gradually rotated and pressed. According to the device, the bolt rotates to drive the movable frame to move up and down, so that the wire inner core can be directly pressed, the wire inner core is prevented from being abraded due to rotation of one end of the bolt, the connecting time of the wire inner core is prolonged, wire loosening is avoided, the use effect is good, and the device has the advantage of preventing wire loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of fuses, in particular to an electric-controlled fuse. Background Art

[0002] A fuse is an electrical device that uses the heat generated by itself to melt the fuse and disconnect the circuit when the current exceeds the specified value. A fuse is a current protector made based on the principle that after the current exceeds the specified value for a period of time, the heat generated by itself will melt the fuse and disconnect the circuit.

[0003] During use, existing electronically controlled fuses usually connect the wires to the static contacts by tightening screws. Since the wires are mostly copper wires with soft texture, the wires will gradually be cut during the tightening of the screws, making the wiring position unstable and prone to disconnection, resulting in poor use effect. Therefore, it is necessary to redesign the electronically controlled fuses to effectively prevent disconnection. Utility Model Content

[0004] In order to solve the problems raised in the above-mentioned background technology, the purpose of the utility model is to provide an electronically controlled fuse, which has the advantage of preventing disconnection, and solves the problem that in the existing electronically controlled fuses, the wires are usually connected to the static contact pieces by tightening screws during use. Since the wires are mostly copper wires with soft texture, the wires will gradually be clamped off during the tightening process of the screws, making the wiring position unstable, prone to disconnection, and poor use effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electrically controlled fuse, comprising a shell, an inner wall of the shell is provided with a slide groove, and the interior of the slide groove is movably connected to a movable frame, the top of the movable frame is movably connected to a bolt through a roller, the bolt is threadedly connected to the shell, the top of the bolt extends to the top of the shell, both sides of the bottom of the inner wall of the shell are fixedly connected with fixed blocks, the front and rear sides of the bottom of the movable frame are fixedly connected with limit blocks, the limit blocks are movably connected to the fixed blocks, both sides of the bottom of the inner wall of the shell are fixedly connected with a drive box, the interior of the drive box is movably connected with a positive and negative threaded rod, both sides of the surface of the positive and negative threaded rod are threadedly connected with clamping blocks, through openings are opened on both sides of the shell, and the bottom of the inner wall of the shell is fixedly connected with an electrical box.

[0006] As a preferred embodiment of the utility model, a bearing is fixedly connected inside the drive box, and the bearing is fixedly connected to the positive and negative threaded rod.

[0007] As a preferred embodiment of the present invention, a handle is fixedly connected to the back side of the positive and negative threaded rod.

[0008] As a preferred embodiment of the present invention, a sealing ring is fixedly connected to the inner wall of the through opening.

[0009] As a preferred embodiment of the present invention, a rubber block is fixedly connected to the surface of the clamping block.

[0010] As a preferred embodiment of the present invention, the front side and the rear side of the shell are fixedly connected with mounting blocks, and both sides of the surface of the mounting blocks are provided with mounting openings.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model adopts a clamping block to clamp the wire, which can prevent the wire from being separated from the outer shell due to external force, and then the wire is decoupled. The device is different from the traditional method of fixing the wire core. The traditional method is that the bolt directly presses the wire core. When the bolt is gradually rotated and tightened, it will apply a rotational force to the wire core, which can easily cause damage to the wire core. In the device, the rotation of the bolt drives the movable frame to move up and down, so that the wire core can be directly pressed, which avoids one end of the bolt rotating and wearing the wire core, prolongs the connection time of the wire core, avoids decoupling, and has a good use effect. The device has the advantage of preventing decoupling.

[0013] 2. The utility model can reduce the friction between the drive box and the positive and negative threaded rod by setting the bearing, thereby facilitating the rotation of the positive and negative threaded rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of a top view and cross-section of the structure of the utility model;

[0016] Figure 3 It is a schematic cross-sectional view of the right side of the structure of the utility model;

[0017] Figure 4 For this utility model Figure 2 A schematic diagram of the enlarged structure in the middle.

[0018] In the figure: 1. housing; 2. movable frame; 3. bolt; 4. limit block; 5. fixing block; 6. drive box; 7. positive and negative threaded rod; 8. clamping block; 9. electrical box; 10. handle; 11. rubber block; 12. through port; 13. sealing ring; 14. mounting block; 15. mounting port. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figures 1 to 4 As shown, an electric-controlled fuse comprises a shell 1, an inner wall of the shell 1 is provided with a slide groove, and a movable frame 2 is movably connected inside the slide groove, a bolt 3 is movably connected to the top of the movable frame 2 through a roller, the bolt 3 is threadedly connected to the shell 1, and the top of the bolt 3 extends to the top of the shell 1, both sides of the bottom of the inner wall of the shell 1 are fixedly connected with fixed blocks 5, the front and rear sides of the bottom of the movable frame 2 are fixedly connected with limit blocks 4, the limit blocks 4 are movably connected to the fixed blocks 5, both sides of the bottom of the inner wall of the shell 1 are fixedly connected with a drive box 6, the inside of the drive box 6 is movably connected with a positive and negative threaded rod 7, and both sides of the surface of the positive and negative threaded rod 7 are threadedly connected with clamping blocks 8, both sides of the shell 1 are provided with through openings 12, the bottom of the inner wall of the shell 1 is fixedly connected with an electrical box 9, and the interior of the electrical box 9 is provided with a porcelain seat, a porcelain cover, a static contact piece, a spring, a stepped hole and a moving contact piece.

[0021] refer to Figure 2 and Figure 4 A bearing is fixedly connected inside the driving box 6, and the bearing is fixedly connected to the positive and negative threaded rod 7.

[0022] As a technical optimization solution of the present invention, the friction between the drive box 6 and the positive and negative threaded rod 7 can be reduced by setting the bearing, thereby facilitating the rotation of the positive and negative threaded rod 7.

[0023] refer to Figure 2 and Figure 4 A handle 10 is fixedly connected to the back of the positive and negative threaded rod 7.

[0024] As a technical optimization solution of the present invention, by setting the handle 10, the operator can use the principle of a labor-saving lever to easily rotate the forward and reverse threaded rod 7.

[0025] refer to Figure 1 , Figure 2 and Figure 4 A sealing ring 13 is fixedly connected to the inner wall of the through opening 12 .

[0026] As a technical optimization solution of the present invention, the sealing ring 13 is provided to increase the sealing between the wire and the through-hole 12 , thereby preventing water in the external environment from entering the interior of the housing 1 along the through-hole 12 .

[0027] refer to Figure 2 and Figure 4 A rubber block 11 is fixedly connected to the surface of the clamping block 8 .

[0028] As a technical optimization solution of the present invention, the friction between the clamping block 8 and the wire can be increased by setting the rubber block 11, thereby improving the stability of the device in clamping the wire.

[0029] refer to Figures 1 to 3 The front and rear sides of the housing 1 are fixedly connected with mounting blocks 14 , and mounting openings 15 are provided on both sides of the surface of the mounting blocks 14 .

[0030] As a technical optimization solution of the present invention, the installation block 14 and the installation opening 15 are provided to facilitate the operator to install the housing 1 of the fuse.

[0031] The working principle and use process of the utility model are as follows: when in use, the operator inserts the inner core of the wire into the through hole 12 so that the inner core is located between the movable frame 2 and the fixed block 5, and then the operator tightens the bolt 3 by means of a tool. Since the bolt 3 is threadedly connected to the housing 1, when the bolt 3 rotates, the bolt 3 drives the movable frame 2 to move downward until the movable frame 2 and the fixed block 5 cooperate to compress the inner core of the wire, and then the operator rotates the handle 10 to drive the positive and negative threaded rod 7 to rotate, so that the two clamping blocks 8 approach each other until the wire is clamped;

[0032] The present invention clamps the wire by the clamping block 8, so as to prevent the wire from being separated from the housing 1 due to external force, and then the wire is decoupled. The present invention is different from the traditional method of fixing the inner core of the wire. The traditional method is that the bolt 3 directly presses the inner core of the wire. When the bolt 3 is gradually rotated and pressed, it will apply a rotational force to the inner core of the wire, which can easily cause damage to the inner core of the wire. In the present invention, the rotation of the bolt 3 drives the movable frame 2 to move up and down, so that the inner core of the wire can be directly pressed, which avoids the wear of the inner core of the wire due to the rotation of one end of the bolt 3, prolongs the connection time of the inner core of the wire, avoids decoupling, and has a good use effect.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrically controlled fuse, comprising a housing (1), characterized in that: The inner wall of the shell (1) is provided with a slide groove, and the interior of the slide groove is movably connected to a movable frame (2), the top of the movable frame (2) is movably connected to a bolt (3) through a roller, the bolt (3) is threadedly connected to the shell (1), and the top of the bolt (3) extends to the top of the shell (1), both sides of the bottom of the inner wall of the shell (1) are fixedly connected to fixed blocks (5), the front and rear sides of the bottom of the movable frame (2) are fixedly connected to limit blocks (4), the limit blocks (4) are movably connected to the fixed blocks (5), both sides of the bottom of the inner wall of the shell (1) are fixedly connected to a drive box (6), the interior of the drive box (6) is movably connected to a positive and negative threaded rod (7), and both sides of the surface of the positive and negative threaded rod (7) are threadedly connected to clamping blocks (8), both sides of the shell (1) are provided with through openings (12), and the bottom of the inner wall of the shell (1) is fixedly connected to an electrical box (9).

2. An electrically controlled fuse according to claim 1, characterized in that: A bearing is fixedly connected inside the driving box (6), and the bearing is fixedly connected to the positive and negative threaded rod (7).

3. An electrically controlled fuse according to claim 1, characterized in that: A handle (10) is fixedly connected to the back side of the positive and negative threaded rod (7).

4. An electrically controlled fuse according to claim 1, characterized in that: A sealing ring (13) is fixedly connected to the inner wall of the through opening (12).

5. The electrically controlled fuse according to claim 1, characterized in that: A rubber block (11) is fixedly connected to the surface of the clamping block (8).

6. An electrically controlled fuse according to claim 1, characterized in that: The front side and the rear side of the housing (1) are both fixedly connected to a mounting block (14), and mounting openings (15) are provided on both sides of the surface of the mounting block (14).

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