Shell melting prevention safety resistor

Abstract

The utility model discloses an anti-fuse shell safety resistor, which belongs to the technical field of safety resistors and comprises a left safety resistor shell used as an anti-fuse shell of the safety resistor, the side edge of the left safety resistor shell is fixedly connected with a threaded ring, and the side edge of the left safety resistor shell is connected with a plurality of pressing blocks. A third limiting block capable of rebounding is fixedly connected to the end, away from the left safety resistor shell, of the pressing block, a right safety resistor shell provided with an annular groove is connected to the side edge of a threaded ring in a threaded mode, and a reset spring is welded to the interior of the left safety resistor shell. The pulling plate is pulled to drive the connecting plate and the first limiting block to move, so that the first limiting block is separated from the second limiting block, the third limiting block is far away from the right safety resistor shell, the left safety resistor shell is rotated, and the right safety resistor shell is separated from the left safety resistor shell.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuse resistors, in particular to an anti-melt shell fuse resistor. Background Art

[0002] Under normal circumstances, the fuse resistor has the function of an ordinary resistor. Once a circuit fault occurs and its rated power is exceeded, it will disconnect the circuit within a specified time to protect other components.

[0003] The current anti-melt shell fuse resistor may be damaged due to high temperature after the circuit is disconnected and needs to be replaced, while the shell needs to be recycled and recast, wasting a lot of resources.

[0004] For example, the wire-wound fuse resistor in the prior art Chinese patent document (application announcement number CN218826430U) is buckled into the fixing groove through the secondary pin head, so that the main pin of the resistor and the secondary pin of the resistor can be placed side by side, so as to facilitate the insertion of the main pin of the resistor and the secondary pin of the resistor into the pad hole on the circuit board, and then the main pin of the resistor and the secondary pin of the resistor are forked apart, so that the unsoldered fuse resistor body can be fixed on the circuit board, so as to facilitate the staff to weld the main pin of the resistor and the secondary pin of the resistor to the pad. This prior art has the following problem: after the circuit is disconnected, the fuse resistor may be damaged due to high temperature and needs to be replaced, and the shell needs to be recycled and recast, wasting a lot of resources.

[0005] Therefore, in view of this situation, it is urgent to design and produce anti-melt shell fuse resistors to meet the needs of practical use. Utility Model Content

[0006] The utility model aims to provide an anti-melt shell fuse resistor to solve the problems raised in the background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-fuse shell fuse resistor, comprising a left fuse resistor shell serving as an anti-fuse shell of a fuse resistor, a side of the left fuse resistor shell being fixedly connected with a threaded ring, a side of the left fuse resistor shell being connected with a plurality of pressing blocks, an end of the pressing block away from the left fuse resistor shell being fixedly connected with a resilient third limit block, a side of the threaded ring being screwed with a right fuse resistor shell having a circular groove, and a reset spring being welded inside the left fuse resistor shell.

[0008] Preferably, a second limit block slidably connected to the left fuse resistor housing is welded to one end of the return spring away from the left fuse resistor housing, and a first limit block for fixing the left fuse resistor housing and the right fuse resistor housing is clamped on the side of the second limit block.

[0009] Preferably, a connecting plate is fixedly connected to the upper side of the first limiting block, and a pulling plate is fixedly connected to one end of the connecting plate away from the first limiting block.

[0010] Preferably, a plurality of reference color rings are arranged on the outer side of the left fuse resistor housing, and a resistor pin is sleeved inside the left fuse resistor housing.

[0011] Preferably, a cylindrical mica board used for a fuse resistor anti-melt shell is fixedly connected to the interior of the left fuse resistor housing, and a plurality of second spring seats are fixedly connected to one end of the mica board away from the left fuse resistor housing.

[0012] Preferably, a buffer spring is welded to a side of the second spring seat, and a first spring seat is welded to an end of the buffer spring away from the second spring seat.

[0013] Preferably, a flame retardant sponge for a fuse resistor anti-melt shell is installed on the side of the first spring seat.

[0014] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0015] The anti-fuse shell fuse resistor drives the third limit block to move by squeezing the pressing block, so that the third limit block is away from the right fuse resistor shell, and the pull plate is pulled to drive the connecting plate and the first limit block to move, so that the first limit block is separated from the second limit block, and the left fuse resistor shell is rotated to separate the right fuse resistor shell from the left fuse resistor shell. The right fuse resistor shell and the left fuse resistor shell can be disassembled and reused, so that the fuse resistor is convenient to replace.

[0016] The anti-melting shell fuse resistor can isolate the temperature through the flame retardant sponge and the mica board when the temperature of the fuse resistor is too high. At the same time, the buffer spring can isolate the flame retardant sponge and the mica board to prevent the flame retardant sponge and the mica board from contacting each other and causing the temperature to be transmitted to the right fuse resistor shell and the left fuse resistor shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the left fuse resistor housing and the right fuse resistor housing of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the first limit block of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the buffer spring of the utility model.

[0022] Description of reference numerals:

[0023] In the figure: 1. left fuse resistor housing; 2. right fuse resistor housing; 3. resistor pin; 4. reference color ring; 5. pull plate; 6. connecting plate; 7. first limit block; 8. second limit block; 9. reset spring; 10. third limit block; 11. threaded ring; 12. pressing block; 13. first spring seat; 14. buffer spring; 15. second spring seat; 16. mica board; 17. flame retardant sponge. DETAILED DESCRIPTION

[0024] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0025] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0026] The connection method can be bonding, welding, bolt connection, etc., depending on actual needs.

[0027] In order to solve the problem that after the circuit is disconnected, the fuse resistor may be damaged due to high temperature and needs to be replaced, and the shell needs to be recycled and recast, wasting more resources, such as Figures 1 to 4The anti-melt shell fuse resistor shown in the figure includes a left fuse resistor shell 1 used as a fuse resistor anti-melt shell, a side of the left fuse resistor shell 1 is fixedly connected with a threaded ring 11, a side of the left fuse resistor shell 1 is connected with a plurality of pressing blocks 12, an end of the pressing block 12 away from the left fuse resistor shell 1 is fixedly connected with a third resilient limit block 10, a side of the threaded ring 11 is screwed with a right fuse resistor shell 2 with a circular ring groove, the inside of the right fuse resistor shell 2 is screwed with a thread, which is convenient for screwing with the threaded ring 11, and the left fuse resistor shell 1 and the right fuse resistor shell 2 are both provided with a plurality of matching grooves, which is convenient for It is clamped with the first limit block 7, and a return spring 9 is welded inside the left safety resistor housing 1. The end of the return spring 9 away from the left safety resistor housing 1 is welded with a second limit block 8 slidably connected to the left safety resistor housing 1. A rubber pad is arranged on the side of the second limit block 8 to provide protection for the second limit block 8 and provide friction for the sliding of the second limit block 8. The side of the second limit block 8 is clamped with the first limit block 7 for fixing the left safety resistor housing 1 and the right safety resistor housing 2. The upper side of the first limit block 7 is fixedly connected with a connecting plate 6, and the end of the connecting plate 6 away from the first limit block 7 is fixedly connected with a pull plate 5.

[0028] A plurality of reference color rings 4 are arranged on the outside of the left fuse resistor housing 1, a resistor pin 3 is sleeved inside the left fuse resistor housing 1, a cylindrical mica board 16 for a fuse resistor anti-melt shell is fixedly connected inside the left fuse resistor housing 1, a plurality of second spring seats 15 are fixedly connected to one end of the mica board 16 away from the left fuse resistor housing 1, a buffer spring 14 is welded to the side of the second spring seat 15, a rubber sheet is directly arranged on the buffer spring 14 to provide friction for the flame retardant sponge 17, a first spring seat 13 is welded to one end of the buffer spring 14 away from the second spring seat 15, and a flame retardant sponge 17 for the fuse resistor anti-melt shell is installed on the side of the first spring seat 13.

[0029] All structures and instruments are heat-resistant and waterproof.

[0030] How it works

[0031] During the use of the anti-melt shell fuse resistor, when the temperature is too high, the temperature is isolated by the flame retardant sponge 17 and the mica board 16, and the buffer spring 14 can block the flame retardant sponge 17 and the mica board 16 to avoid heat conduction caused by contact, and the pressing block 12 is pressed to drive the third limit block 10 to move downward, so that the third limit block 10 is away from the right fuse resistor housing, and at the same time, the pull plate 5 is pulled to drive the connecting plate 6 to move, and the movement of the connecting plate 6 drives the first limit block 7 to move, so that the first limit block 7 is separated from the second limit block 8, and then the left fuse resistor housing 1 is rotated to separate the right fuse resistor housing 2 from the left fuse resistor housing 1, and the right fuse resistor housing 2 and the left fuse resistor housing 1 can be disassembled.

[0032] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0033] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0034] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A fuse resistor having an anti-fusible shell, comprising a left fuse resistor housing (1) serving as a fuse resistor anti-fusible shell, Features: The side of the left safety resistor housing (1) is fixedly connected to a threaded ring (11), the side of the left safety resistor housing (1) is connected to a plurality of pressing blocks (12), one end of the pressing block (12) away from the left safety resistor housing (1) is fixedly connected to a third limit block (10) that can rebound, the side of the threaded ring (11) is screwed to a right safety resistor housing (2) having a circular groove, and a return spring (9) is welded inside the left safety resistor housing (1).

2. The anti-melt shell fuse resistor according to claim 1, Features: A second limit block (8) slidably connected to the left safety resistor housing (1) is welded to one end of the return spring (9) away from the left safety resistor housing (1), and a first limit block (7) for fixing the left safety resistor housing (1) and the right safety resistor housing (2) is clamped on the side of the second limit block (8).

3. The anti-melt shell fuse resistor according to claim 2, Features: A connecting plate (6) is fixedly connected to the upper side of the first limiting block (7), and a pulling plate (5) is fixedly connected to one end of the connecting plate (6) away from the first limiting block (7).

4. The anti-melt shell fuse resistor according to claim 3, Features: A plurality of reference color rings (4) are arranged on the outside of the left fuse resistor housing (1), and a resistor pin (3) is sleeved inside the left fuse resistor housing (1).

5. The anti-melt shell fuse resistor according to claim 4, Features: A cylindrical mica plate (16) for a fuse resistor anti-melting shell is fixedly connected inside the left fuse resistor housing (1), and a plurality of second spring seats (15) are fixedly connected to one end of the mica plate (16) away from the left fuse resistor housing (1).

6. The anti-melt shell fuse resistor according to claim 5, Features: A buffer spring (14) is welded to the side of the second spring seat (15), and a first spring seat (13) is welded to one end of the buffer spring (14) away from the second spring seat (15).

7. The anti-melt shell fuse resistor according to claim 6, Features: A flame retardant sponge (17) for a fuse resistor anti-melt shell is installed on the side of the first spring seat (13).

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