CN220856489U - Fusing resistor - Google Patents

Abstract

The utility model discloses a fuse resistor, which comprises a resistor body, two fixing seats and a locking device, wherein the locking device comprises a conductive column and a locking nut used for locking the resistor body between the two fixing seats, wire feet at two ends of the resistor are respectively and electrically connected with the conductive columns at two ends, the conductive column is arranged on the fixing seats, threads matched with the locking nut are arranged on the outer wall of the conductive column, and the locking nut is in threaded connection with the conductive column. When the resistor body fuses, through unscrewing locking device, change the resistor after fusing between the fixing base, do not have to melt and clear up the leg of old resistor, simplify the operation, conveniently change.

Description

Fusing resistor

Technical Field

The utility model relates to the technical field of resistors, in particular to a fusing resistor.

Background

The fusing resistor is a special element integrating a collector resistor and a fuse, and has the functional characteristics that: the fuse resistor can normally work for a long time under the condition of rated working voltage or current, can be used as a normal resistor, and can be used for protecting a circuit by overheat fusing when the voltage and the current exceeding the rated working voltage and the current appear in the circuit. The structure of the fusing resistor generally comprises a fusible fuse, a coil for heating and an insulating shell, most of the existing fusing resistors are welded on a circuit board, after fusing, the welding feet of the old resistors are required to be melted and cleaned, the resistors can be replaced again and welded, and the replacement process is complex.

Disclosure of utility model

The utility model aims to provide a fusing resistor which is used for solving the problem that the fusing resistor is inconvenient to replace in the prior art.

In order to solve the technical problems, the utility model adopts the following scheme:

The utility model provides a fusing resistor, includes the resistor body, still includes two fixing bases and locking device, and locking device includes conductive post and is used for locking the resistor body between two fixing bases lock nut, and the terminal pin at resistor both ends is connected with the conductive post electricity at both ends respectively, and conductive post installs on the fixing base, and conductive post outer wall is equipped with the screw thread that matches with lock nut, lock nut and conductive post threaded connection.

In some alternative embodiments, the anchor mount is L-shaped.

In some alternative embodiments, an insulating sleeve is placed over the lock nut.

In some alternative embodiments, the conductive post passes through the end of the fixing base to be connected with the resistor body arranged between the inner walls of the fixing base, and the locking nut is arranged on the outer wall of the fixing base to be in threaded connection with the conductive post.

In some alternative embodiments, the conductive posts between the inner walls of the two holders are sleeved with gaskets.

In some alternative embodiments, the resistor body comprises a fuse, a coil and a protective shell, the coil is wound on the fuse, two cylindrical caps with equal diameters are arranged at two ends of the resistor, the protective shell is sleeved on the outer sides of the fuse and the caps, and wire feet at two ends of the fuse are led out from the center positions of the caps.

In some alternative embodiments, the protective housing is a silica sleeve and the inner wall of the protective housing is coated with an aluminum film.

In some alternative embodiments, the protective housing is a hollow porcelain tube with an air layer between the inner wall of the hollow porcelain tube and the outside of the coil.

In some alternative embodiments, the cap is made of tin-plated metal or nickel-plated metal.

The utility model has the beneficial effects that:

The utility model discloses a fuse resistor, which comprises a resistor body, two fixing seats and a locking device, wherein the locking device comprises a conductive column and a locking nut used for locking the resistor body between the two fixing seats, wire feet at two ends of the resistor are respectively and electrically connected with the conductive columns at two ends, the conductive column is arranged on the fixing seats, threads matched with the locking nut are arranged on the outer wall of the conductive column, and the locking nut is in threaded connection with the conductive column.

The effect is as follows: when the resistor body fuses, through unscrewing locking device, change the resistor after fusing between the fixing base, do not have to melt and clear up the leg of old resistor, simplify the operation, conveniently change.

Drawings

FIG. 1 is a front view of a fuse resistor structure of embodiment 1 of the present utility model;

Fig. 2 is a schematic cross-sectional view of a fuse resistor according to embodiment 1 of the present utility model.

Reference numerals illustrate:

1-resistor body, 11-fuse, 12-coil, 13-cap, 14-protective housing, 2-fixing base, 3-conductive post, 4-lock nut, 5-gasket, 6-air bed.

Detailed Description

The present utility model will be described in further detail with reference to examples and drawings, but embodiments of the present utility model are not limited thereto.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and for simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "configured," "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; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model is described in detail below by reference to the attached drawings and in connection with the embodiments:

Example 1:

As shown in fig. 1 to 2, the present embodiment provides a fuse resistor, including a resistor body 1, further including two fixing bases 2 and a locking device, the locking device includes a conductive post 3 and a locking nut 4 for locking the resistor body 1 between the two fixing bases 2, the wire feet at two ends of the resistor are respectively electrically connected with the conductive posts 3 at two ends, the conductive post 3 is mounted on the fixing base 2, the outer wall of the conductive post 3 is provided with threads matched with the locking nut 4, and the locking nut 4 is in threaded connection with the conductive post 3.

In order to fixedly mount the resistor body 1 on the circuit board, the fixing base 2 is L-shaped, so that the resistor body 1 can be mounted more stably.

Optionally, an insulating sleeve may be sleeved over the lock nut 4.

Specifically, the conductive post 3 passes through the upper end of the fixing base 2 to be connected with the resistor body 1 arranged between the two fixing bases 2, and the lock nut 4 is arranged outside the fixing bases 2 to be in threaded connection with the conductive post 3.

In order to enable the fixing base 2 and the resistor body 1 to be abutted tightly, the fixing base 2 and the resistor body 1 are of rigid structures, so that the gasket 5 can be sleeved outside the conductive column 3 between the two fixing bases 2.

In some alternative embodiments, the resistor body 1 comprises a fuse 11, a coil 12 and a protective housing 14, the coil 12 is wound on the fuse 11, two cylindrical caps 13 with equal diameters are arranged at two ends of the fuse, the protective housing 14 is sleeved outside the fuse 11 and the caps 13, and wire feet at two ends of the fuse 11 are led out from the center of the caps 13.

The protective housing 14 may be a silica sleeve and the inner wall of the protective housing 14 is coated with an aluminum film.

In some alternative embodiments, the protective housing 14 is a hollow porcelain tube with an air layer 6 between the inner wall of the hollow porcelain tube and the outside of the coil 12.

Optionally, the cap 13 is made of tin-plated metal or nickel-plated metal, a through groove is formed at a position of the protective housing 14 corresponding to the cap 13, and threads matched with the lock nut 4 are formed in the through groove, so that the lock nut 4 can be screwed into the protective housing 14 to be communicated with the wire pins led out from the end part of the cap 13 for electrifying when the resistor body 1 is abutted.

The use flow of this embodiment is as follows:

When the fuse 11 in the resistor is fused, the locking nuts 4 at the two ends of the fixing base 2 are unscrewed to separate the conductive columns 3 from the resistor body 1, so that the resistor body 1 between the fixing bases 2 is taken down, a new resistor body 1 is reinstalled between the fixing bases 2, the conductive columns 3 are aligned with the through grooves on the protective shell 14 of the resistor body 1, the conductive columns 3 are electrically connected with the wire pins, the conductive columns can be communicated with the fixing bases 2 through the conductive bases, the fixing bases 2 are made of metal materials and are directly welded on a circuit board and electrically connected with the circuit board, after the resistor body 1, the conductive columns 3 and the circuit board are conducted, the locking nuts 4 at the two sides are screwed, the gaskets 5 and the conductive columns 3 at the two ends are abutted against the two ends of the resistor body 1, and the conductive columns 3 are screwed into the through grooves of the protective shell 14 and are connected with the wire pins led out from the cap 13, so that the replacement of the resistor is completed.

It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present utility model, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the utility model, and are also considered to be within the scope of the utility model.

Claims (9)

1. The utility model provides a fusing resistor, including resistor body (1), a serial communication port, still include two fixing base (2) and locking device, locking device includes conductive post (3) and is used for locking resistor body (1) lock nut (4) between two fixing base (2), the line foot at resistor both ends is connected with conductive post (3) electricity at both ends respectively, conductive post (3) are installed on fixing base (2), conductive post (3) outer wall is equipped with the screw thread that matches with lock nut (4), lock nut (4) and conductive post (3) threaded connection.

2. A fuse resistor as claimed in claim 1, characterized in that the holder (2) is L-shaped.

3. A fuse resistor as claimed in claim 1, characterized in that an insulating sleeve is provided over the lock nut (4).

4. A fuse resistor as claimed in claim 1, characterized in that the conductive post (3) is connected to the resistor body (1) arranged between the inner walls of the holder (2) through the end of the holder (2), and the locking nut (4) is arranged outside the holder (2) in threaded connection with the conductive post (3).

5. A fuse resistor as claimed in claim 4, characterized in that the conductive post (3) between the two holders (2) is provided with a spacer (5) externally.

6. A fuse resistor as claimed in claim 1, characterized in that the resistor body (1) comprises a fuse (11), a coil (12) and a protective housing (14), the coil (12) is wound on the fuse (11), two cylindrical caps (13) with equal diameters are arranged at two ends of the fuse, the protective housing (14) is sleeved outside the fuse (11) and the caps (13), and the wire feet at two ends of the fuse (11) are led out from the central position of the caps.

7. A fuse resistor as claimed in claim 6, characterized in that the protective housing (14) is a silicon dioxide sleeve and the inner wall of the protective housing (14) is coated with an aluminium film.

8. A fuse resistor as claimed in claim 6, characterized in that the protective housing (14) is a hollow porcelain tube, an air layer (6) being present between the inner wall of the hollow porcelain tube and the outside of the coil (12).

9. A fuse resistor as claimed in claim 6, characterized in that the cap (13) is made of tin-plated metal or nickel-plated metal.