CN216902782U

CN216902782U - Drop-out fuse

Info

Publication number: CN216902782U
Application number: CN202123446086.5U
Authority: CN
Inventors: 王海燕
Original assignee: Hengte Electric Co ltd
Current assignee: Hengte Electric Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-05
Anticipated expiration: 2031-12-30

Abstract

The utility model relates to the technical field of fuses, and discloses a drop-out fuse which comprises an insulator, wherein supporting plates are arranged on two sides of the upper side of the insulator, a fixing box is arranged on the lower portion of the right side of the supporting plate on the upper side, a pressing plate is arranged on the left side of the fixing box, a second spring is arranged on the lower portion of the end of the supporting plate on the upper side, a connecting box is arranged at the right end of the supporting plate on the lower side, a first spring is arranged on the inner wall of the left side of the connecting box, and a straight rod is rotatably connected to the inner side of the lower portion of the connecting box. According to the utility model, the top end of the fusion tube can be smoothly pushed to the lower side of the pressing plate to be clamped through the guide plate and the limiting plate, the use is very convenient, when a circuit is short-circuited, a fuse wire is broken, the push plate pushes the lower side of the fusion tube under the elastic force of the first spring, so that the upper end of the fusion tube is separated from the lower side of the pressing plate, the device is broken, and current cannot pass through the device, so that a circuit behind the device is protected, and the device is simple in structure and safe to use.

Description

Drop-out fuse

Technical Field

The utility model relates to the technical field of fuses, in particular to a drop-out fuse.

Background

The drop-out fuse is installed on a 10kV distribution line branch line, can reduce the power failure range, has the function of an isolating switch due to an obvious disconnection point, creates a safe operation environment for maintenance section lines and equipment, is installed on a distribution transformer, and can be used as the main protection of the distribution transformer.

Chinese patent publication No. CN211605087U discloses a drop out fuse, including the fuse main part, the lower extreme surface of fuse main part is provided with stable shock attenuation protection supporting seat, the upper end surface of fuse main part is provided with anti-skidding handle, one side surface of fuse main part is provided with the insulator, one side surface of stable shock attenuation protection supporting seat is provided with can dismantle the regulation post, one side surface that can dismantle the regulation post is provided with the lower moving contact, the upper end of lower moving contact is provided with the static contact, one side surface of going up the static contact is provided with the upper bracket. This drop out fuse, the structure is complicated, uses safelyly inadequately to long-term the use, the fusion tube junction can take place to become flexible, can not be smooth and easy close the fusion tube.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a drop-out fuse.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a drop out fuse, includes the insulator, insulator upside both sides all are provided with the backup pad, the upside backup pad right side lower part is provided with fixed box, the fixed box left side is provided with the clamp plate, the upside the backup pad has the end lower part to be provided with the second spring, the downside the backup pad right-hand member is provided with the connecting box, connecting box left side inner wall is provided with first spring, the inboard rotation in connecting box lower part is connected with the straight-bar, straight-bar upper portion fixedly connected with push pedal, the connecting box right side lower part is rotated and is connected with the mount, the inside fixed connection of mount is in fusion tube lower part periphery.

As a further description of the above technical solution:

the equal fixedly connected with wiring end in one side that the insulator was kept away from to the backup pad.

As a further description of the above technical solution:

the lower end of the second spring is fixedly connected to the upper side of the pressing plate.

As a further description of the above technical solution:

limiting plates are arranged on the inner sides of the lower sides of the fixed boxes.

As a further description of the above technical solution:

the right side of the first spring is arranged at the upper part of the push plate.

As a further description of the above technical solution:

the top end of the fusion tube is arranged at the lower side of the pressing plate.

As a further description of the above technical solution:

the fuse tube is internally provided with a fuse wire, and one end of the fuse wire, which is far away from the fuse tube, is fixedly connected to the middle lower part of the left side of the push plate.

As a further description of the above technical solution:

guide plates are arranged on the front side and the rear side of the right side of the connecting box.

The utility model has the following beneficial effects:

1. according to the utility model, the guide plate guides the moving direction of the fusion tube, so that the fusion tube and the pressing plate are ensured to be on the same vertical plane and pass through the limiting plate, the pressing plate is prevented from being inclined too seriously, the top end of the fusion tube is pushed to the lower part of the pressing plate conveniently and smoothly to be clamped, and the use is very convenient.

2. According to the utility model, when a circuit is short-circuited, the fuse wire is broken, so that the first spring pushes the push plate, and under the strong elastic force of the first spring, the push plate pushes the lower side of the fusion tube, so that the upper end of the fusion tube is separated from the lower side of the pressing plate, the device is in open circuit, and current cannot pass through, so that the following circuit is protected, and the fuse wire protecting device is simple in structure and safe to use.

Drawings

Fig. 1 is a cross-sectional view of a drop-out fuse according to the present invention;

fig. 2 is a schematic structural diagram of a fixing box of a drop-out fuse according to the present invention;

fig. 3 is a schematic structural diagram of a connection box of a drop-out fuse according to the present invention.

Illustration of the drawings:

1. a terminal; 2. an insulator; 3. a support plate; 4. a first spring; 5. a straight rod; 6. a fixed mount; 7. a guide plate; 8. pushing the plate; 9. a connection box; 10. a fusion tube; 11. a second spring; 12. pressing a plate; 13. a fixing box; 14. and a limiting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, one embodiment provided by the present invention: a drop-out fuse comprises an insulator 2, wherein supporting plates 3 are respectively arranged on two sides of the upper side of the insulator 2, a fixing box 13 is arranged on the lower portion of the right side of the upper supporting plate 3, a pressing plate 12 is arranged on the left side of the fixing box 13, a second spring 11 is arranged on the lower portion of the end of the upper supporting plate 3, a connecting box 9 is arranged on the right end of the lower supporting plate 3, a first spring 4 is arranged on the inner wall of the left side of the connecting box 9, a straight rod 5 is rotatably connected to the inner side of the lower portion of the connecting box 9, a push plate 8 is fixedly connected to the upper portion of the straight rod 5, a fixing frame 6 is rotatably connected to the lower portion of the connecting box 9, the inner portion of the fixing frame 6 is fixedly connected to the periphery of the lower portion of a fusion tube 10, firstly, a special tool is used for pushing the top end of the fusion tube 10 to the lower side of the pressing plate 12, the fusion tube 10 is guided to move in the same vertical plane with the pressing plate 12 through a guide plate 7, and passes through a limiting plate 14, so that the pressing plate 12 is not too serious in inclination, and then guarantee can be convenient smooth and easy push the top of fusion tube 10 to clamp 12 below, when the circuit short circuit, the fuse breaks, and then makes first spring 4 promote push pedal 8, and under the powerful elasticity of first spring 4, push pedal 8 promotes fusion tube 10 downside for fusion tube 10 upper end breaks away from the clamp plate 12 downside, makes the device form and opens circuit, and the electric current can't pass through, thereby the circuit at protection back, simple structure, it is safe in utilization.

One side of the support plate 3, which is far away from the insulator 2, is fixedly connected with the wiring terminal 1 and is used for connecting electric wires, so that a passage is formed among the wiring terminal 1, the support plate 3, the pressing plate 12 and the fusion tube 10, the lower end of the second spring 11 is fixedly connected to the upper side of the pressing plate 12, when the fusion tube 10 is clamped below the pressing plate 12, the second spring 11 is compressed, so that the pressing plate 12 is tightly pressed out of the fusion tube 10 under the action of the second spring 11, so that the fusion tube 10 is fixed, the inner sides of the lower sides of the fixing boxes 13 are respectively provided with a limiting plate 14, the width of the pressing plate 12 is larger than the distance between the limiting plates 14, so that the pressing plate 12 cannot be damaged by the second spring 11 and is too severely inclined, the fusion tube 10 cannot be clamped below the pressing plate 12, the right side of the first spring 4 is arranged at the upper part of the push plate 8, when the push plate 8 is vertical, the first spring 4 is compressed to the limit, after the fuse is broken, the push plate 8 is pushed by the first spring 4 under the strong elasticity of the first spring 4, push pedal 8 promotes fusion tube 10 downside, thereby make fusion tube 10 break away from 12 downside of clamp plate, make the device form and open circuit, 10 tops of fusion tube set up in clamp plate 12 downside, make wiring end 1, backup pad 3, form the route between clamp plate 12 and the fusion tube 10, the inside fuse that is provided with of fusion tube 10, the fuse is kept away from the one end fixed connection of fusion tube 10 and is lower part in 8 left sides of push pedal, through fuse pulling push pedal 8, and make push pedal 8 compress first spring 4, both sides all are provided with guide plate 7 around the connecting box 9 right side, guide fusion tube 10's moving direction, prevent because not hard up between mount 6 and the connecting box 9, lead to fusion tube 10 crooked, and then let lead to the fusion tube 10 can't push away to 12 below of clamp plate.

The working principle is as follows: at first with special instrument, push the fusion tube 10 top to clamp plate 12 downside, through guide board 7, guide the moving direction of fusion tube 10, guarantee that fusion tube 10 and clamp plate 12 are at same perpendicular, and with crossing limiting plate 14, make clamp plate 12 can not incline too seriously, and then guarantee that can be convenient smooth and easy push the fusion tube 10 top to clamp plate 12 below, when the circuit short circuit, the fuse breaks, and then make first spring 4 promote push pedal 8, under the powerful elasticity of first spring 4, push pedal 8 promotes fusion tube 10 downside, make fusion tube 10 upper end break away from clamp plate 12 downside, make the device form and open circuit, the electric current is unable to pass through, thereby protect the circuit at the back, moreover, the steam generator is simple in structure, and is safe in utilization.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The drop-out fuse comprises an insulator (2), and is characterized in that: insulator (2) upside both sides all are provided with backup pad (3), upside backup pad (3) right side lower part is provided with fixed box (13), fixed box (13) left side is provided with clamp plate (12), upside backup pad (3) have the end lower part to be provided with second spring (11), downside backup pad (3) right-hand member is provided with connecting box (9), connecting box (9) left side inner wall is provided with first spring (4), connecting box (9) lower part inboard is rotated and is connected with straight-bar (5), straight-bar (5) upper portion fixedly connected with push pedal (8), connecting box (9) right side lower part is rotated and is connected with mount (6), the inside fixed connection of mount (6) is in fusion tube (10) lower part periphery.

2. A drop out fuse as claimed in claim 1, wherein: and one side of the support plate (3) far away from the insulator (2) is fixedly connected with a wiring terminal (1).

3. A drop out fuse as claimed in claim 1, wherein: the lower end of the second spring (11) is fixedly connected to the upper side of the pressure plate (12).

4. A drop out fuse as claimed in claim 1, wherein: and limiting plates (14) are arranged on the inner sides of the lower sides of the fixed boxes (13).

5. A drop out fuse as claimed in claim 1, wherein: the right side of the first spring (4) is arranged at the upper part of the push plate (8).

6. A drop out fuse as claimed in claim 1, wherein: the top end of the fusion tube (10) is arranged at the lower side of the pressure plate (12).

7. A drop out fuse as claimed in claim 1, wherein: the fuse wire is arranged in the fuse tube (10), and one end of the fuse wire, which is far away from the fuse tube (10), is fixedly connected to the middle lower part of the left side of the push plate (8).

8. A drop out fuse as claimed in claim 1, wherein: guide plates (7) are arranged on the front side and the rear side of the right side of the connecting box (9).